mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15 #include <mono/utils/mono-compiler.h>
  16
  17 #ifndef DISABLE_JIT
  18
  19 #include <signal.h>
  20
  21 #ifdef HAVE_UNISTD_H
  22 #include <unistd.h>
  23 #endif
  24
  25 #include <math.h>
  26 #include <string.h>
  27 #include <ctype.h>
  28
  29 #ifdef HAVE_SYS_TIME_H
  30 #include <sys/time.h>
  31 #endif
  32
  33 #ifdef HAVE_ALLOCA_H
  34 #include <alloca.h>
  35 #endif
  36
  37 #include <mono/utils/memcheck.h>
  38 #include "mini.h"
  39 #include <mono/metadata/abi-details.h>
  40 #include <mono/metadata/assembly.h>
  41 #include <mono/metadata/attrdefs.h>
  42 #include <mono/metadata/loader.h>
  43 #include <mono/metadata/tabledefs.h>
  44 #include <mono/metadata/class.h>
  45 #include <mono/metadata/object.h>
  46 #include <mono/metadata/exception.h>
  47 #include <mono/metadata/opcodes.h>
  48 #include <mono/metadata/mono-endian.h>
  49 #include <mono/metadata/tokentype.h>
  50 #include <mono/metadata/tabledefs.h>
  51 #include <mono/metadata/marshal.h>
  52 #include <mono/metadata/debug-helpers.h>
  53 #include <mono/metadata/mono-debug.h>
  54 #include <mono/metadata/mono-debug-debugger.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/metadata/debug-mono-symfile.h>
  63 #include <mono/utils/mono-compiler.h>
  64 #include <mono/utils/mono-memory-model.h>
  65 #include <mono/utils/mono-error-internals.h>
  66 #include <mono/metadata/mono-basic-block.h>
  67 #include <mono/metadata/reflection-internals.h>
  68 #include <mono/utils/mono-threads-coop.h>
  69
  70 #include "trace.h"
  71
  72 #include "ir-emit.h"
  73
  74 #include "jit-icalls.h"
  75 #include "jit.h"
  76 #include "debugger-agent.h"
  77 #include "seq-points.h"
  78 #include "aot-compiler.h"
  79 #include "mini-llvm.h"
  80
  81 #define BRANCH_COST 10
  82 #define INLINE_LENGTH_LIMIT 20
  83
  84 /* These have 'cfg' as an implicit argument */
  85 #define INLINE_FAILURE(msg) do {                                                                        \
  86         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  87                 inline_failure (cfg, msg);                                                                              \
  88                 goto exception_exit;                                                                                    \
  89         } \
  90         } while (0)
  91 #define CHECK_CFG_EXCEPTION do {\
  92                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  93                         goto exception_exit;                                            \
  94         } while (0)
  95 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  96                 field_access_failure ((cfg), (method), (field));                        \
  97                 goto exception_exit;    \
  98         } while (0)
  99 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 100                 if (cfg->gshared) {                                                                     \
 101                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 102                         goto exception_exit;    \
 103                 }                       \
 104         } while (0)
 105 #define GSHAREDVT_FAILURE(opcode) do {          \
 106         if (cfg->gsharedvt) {                                                                                           \
 107                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 108                 goto exception_exit;                                                                                    \
 109         }                                                                                                                                       \
 110         } while (0)
 111 #define OUT_OF_MEMORY_FAILURE do {      \
 112                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 113                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 114                 goto exception_exit;    \
 115         } while (0)
 116 #define DISABLE_AOT(cfg) do { \
 117                 if ((cfg)->verbose_level >= 2)                                            \
 118                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 119                 (cfg)->disable_aot = TRUE;                                                        \
 120         } while (0)
 121 #define LOAD_ERROR do { \
 122                 break_on_unverified ();                                                         \
 123                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 124                 goto exception_exit;                                                                    \
 125         } while (0)
 126
 127 #define TYPE_LOAD_ERROR(klass) do { \
 128                 cfg->exception_ptr = klass; \
 129                 LOAD_ERROR;                                     \
 130         } while (0)
 131
 132 #define CHECK_CFG_ERROR do {\
 133                 if (!mono_error_ok (&cfg->error)) { \
 134                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 135                         goto mono_error_exit; \
 136                 } \
 137         } while (0)
 138
 139 /* Determine whenever 'ins' represents a load of the 'this' argument */
 140 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 141
 142 static int ldind_to_load_membase (int opcode);
 143 static int stind_to_store_membase (int opcode);
 144
 145 int mono_op_to_op_imm (int opcode);
 146 int mono_op_to_op_imm_noemul (int opcode);
 147
 148 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 149
 150 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 151                                                   guchar *ip, guint real_offset, gboolean inline_always);
 152 static MonoInst*
 153 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 154
 155 inline static MonoInst*
 156 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg);
 157
 158 /* helper methods signatures */
 159 static MonoMethodSignature *helper_sig_domain_get;
 160 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 161 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 162 static MonoMethodSignature *helper_sig_jit_thread_attach;
 163 static MonoMethodSignature *helper_sig_get_tls_tramp;
 164 static MonoMethodSignature *helper_sig_set_tls_tramp;
 165
 166 /* type loading helpers */
 167 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 168 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 169
 170 /*
 171  * Instruction metadata
 172  */
 173 #ifdef MINI_OP
 174 #undef MINI_OP
 175 #endif
 176 #ifdef MINI_OP3
 177 #undef MINI_OP3
 178 #endif
 179 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 180 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 181 #define NONE ' '
 182 #define IREG 'i'
 183 #define FREG 'f'
 184 #define VREG 'v'
 185 #define XREG 'x'
 186 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 187 #define LREG IREG
 188 #else
 189 #define LREG 'l'
 190 #endif
 191 /* keep in sync with the enum in mini.h */
 192 const char
 193 ins_info[] = {
 194 #include "mini-ops.h"
 195 };
 196 #undef MINI_OP
 197 #undef MINI_OP3
 198
 199 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 200 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 201 /*
 202  * This should contain the index of the last sreg + 1. This is not the same
 203  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 204  */
 205 const gint8 ins_sreg_counts[] = {
 206 #include "mini-ops.h"
 207 };
 208 #undef MINI_OP
 209 #undef MINI_OP3
 210
 211 #define MONO_INIT_VARINFO(vi,id) do { \
 212         (vi)->range.first_use.pos.bid = 0xffff; \
 213         (vi)->reg = -1; \
 214         (vi)->idx = (id); \
 215 } while (0)
 216
 217 guint32
 218 mono_alloc_ireg (MonoCompile *cfg)
 219 {
 220         return alloc_ireg (cfg);
 221 }
 222
 223 guint32
 224 mono_alloc_lreg (MonoCompile *cfg)
 225 {
 226         return alloc_lreg (cfg);
 227 }
 228
 229 guint32
 230 mono_alloc_freg (MonoCompile *cfg)
 231 {
 232         return alloc_freg (cfg);
 233 }
 234
 235 guint32
 236 mono_alloc_preg (MonoCompile *cfg)
 237 {
 238         return alloc_preg (cfg);
 239 }
 240
 241 guint32
 242 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 243 {
 244         return alloc_dreg (cfg, stack_type);
 245 }
 246
 247 /*
 248  * mono_alloc_ireg_ref:
 249  *
 250  *   Allocate an IREG, and mark it as holding a GC ref.
 251  */
 252 guint32
 253 mono_alloc_ireg_ref (MonoCompile *cfg)
 254 {
 255         return alloc_ireg_ref (cfg);
 256 }
 257
 258 /*
 259  * mono_alloc_ireg_mp:
 260  *
 261  *   Allocate an IREG, and mark it as holding a managed pointer.
 262  */
 263 guint32
 264 mono_alloc_ireg_mp (MonoCompile *cfg)
 265 {
 266         return alloc_ireg_mp (cfg);
 267 }
 268
 269 /*
 270  * mono_alloc_ireg_copy:
 271  *
 272  *   Allocate an IREG with the same GC type as VREG.
 273  */
 274 guint32
 275 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 276 {
 277         if (vreg_is_ref (cfg, vreg))
 278                 return alloc_ireg_ref (cfg);
 279         else if (vreg_is_mp (cfg, vreg))
 280                 return alloc_ireg_mp (cfg);
 281         else
 282                 return alloc_ireg (cfg);
 283 }
 284
 285 guint
 286 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 287 {
 288         if (type->byref)
 289                 return OP_MOVE;
 290
 291         type = mini_get_underlying_type (type);
 292 handle_enum:
 293         switch (type->type) {
 294         case MONO_TYPE_I1:
 295         case MONO_TYPE_U1:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I2:
 298         case MONO_TYPE_U2:
 299                 return OP_MOVE;
 300         case MONO_TYPE_I4:
 301         case MONO_TYPE_U4:
 302                 return OP_MOVE;
 303         case MONO_TYPE_I:
 304         case MONO_TYPE_U:
 305         case MONO_TYPE_PTR:
 306         case MONO_TYPE_FNPTR:
 307                 return OP_MOVE;
 308         case MONO_TYPE_CLASS:
 309         case MONO_TYPE_STRING:
 310         case MONO_TYPE_OBJECT:
 311         case MONO_TYPE_SZARRAY:
 312         case MONO_TYPE_ARRAY:
 313                 return OP_MOVE;
 314         case MONO_TYPE_I8:
 315         case MONO_TYPE_U8:
 316 #if SIZEOF_REGISTER == 8
 317                 return OP_MOVE;
 318 #else
 319                 return OP_LMOVE;
 320 #endif
 321         case MONO_TYPE_R4:
 322                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 323         case MONO_TYPE_R8:
 324                 return OP_FMOVE;
 325         case MONO_TYPE_VALUETYPE:
 326                 if (type->data.klass->enumtype) {
 327                         type = mono_class_enum_basetype (type->data.klass);
 328                         goto handle_enum;
 329                 }
 330                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 331                         return OP_XMOVE;
 332                 return OP_VMOVE;
 333         case MONO_TYPE_TYPEDBYREF:
 334                 return OP_VMOVE;
 335         case MONO_TYPE_GENERICINST:
 336                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 337                         return OP_XMOVE;
 338                 type = &type->data.generic_class->container_class->byval_arg;
 339                 goto handle_enum;
 340         case MONO_TYPE_VAR:
 341         case MONO_TYPE_MVAR:
 342                 g_assert (cfg->gshared);
 343                 if (mini_type_var_is_vt (type))
 344                         return OP_VMOVE;
 345                 else
 346                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 347         default:
 348                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 349         }
 350         return -1;
 351 }
 352
 353 void
 354 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 355 {
 356         int i;
 357         MonoInst *tree;
 358
 359         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 360         for (i = 0; i < bb->in_count; ++i)
 361                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 362         printf (", OUT: ");
 363         for (i = 0; i < bb->out_count; ++i)
 364                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 365         printf (" ]\n");
 366         for (tree = bb->code; tree; tree = tree->next)
 367                 mono_print_ins_index (-1, tree);
 368 }
 369
 370 void
 371 mono_create_helper_signatures (void)
 372 {
 373         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 374         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 375         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 376         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 377         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 378         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 379 }
 380
 381 static MONO_NEVER_INLINE void
 382 break_on_unverified (void)
 383 {
 384         if (mini_get_debug_options ()->break_on_unverified)
 385                 G_BREAKPOINT ();
 386 }
 387
 388 static MONO_NEVER_INLINE void
 389 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 390 {
 391         char *method_fname = mono_method_full_name (method, TRUE);
 392         char *field_fname = mono_field_full_name (field);
 393         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 394         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 395         g_free (method_fname);
 396         g_free (field_fname);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 inline_failure (MonoCompile *cfg, const char *msg)
 401 {
 402         if (cfg->verbose_level >= 2)
 403                 printf ("inline failed: %s\n", msg);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         if (cfg->verbose_level > 2)                                                                                     \
 411                 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);
 412         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 413 }
 414
 415 static MONO_NEVER_INLINE void
 416 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 417 {
 418         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);
 419         if (cfg->verbose_level >= 2)
 420                 printf ("%s\n", cfg->exception_message);
 421         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 422 }
 423
 424 /*
 425  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 426  * foo<T> (int i) { ldarg.0; box T; }
 427  */
 428 #define UNVERIFIED do { \
 429         if (cfg->gsharedvt) { \
 430                 if (cfg->verbose_level > 2)                                                                     \
 431                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 432                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 433                 goto exception_exit;                                                                                    \
 434         }                                                                                                                                       \
 435         break_on_unverified ();                                                                                         \
 436         goto unverified;                                                                                                        \
 437 } while (0)
 438
 439 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 440                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 441                 if (!(tblock)) {        \
 442                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 443             NEW_BBLOCK (cfg, (tblock)); \
 444                         (tblock)->cil_code = (ip);      \
 445                         ADD_BBLOCK (cfg, (tblock));     \
 446                 } \
 447         } while (0)
 448
 449 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 450 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 451                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 452                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 453                 (dest)->sreg1 = (sr1); \
 454                 (dest)->sreg2 = (sr2); \
 455                 (dest)->inst_imm = (imm); \
 456                 (dest)->backend.shift_amount = (shift); \
 457                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 458         } while (0)
 459 #endif
 460
 461 /* Emit conversions so both operands of a binary opcode are of the same type */
 462 static void
 463 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 464 {
 465         MonoInst *arg1 = *arg1_ref;
 466         MonoInst *arg2 = *arg2_ref;
 467
 468         if (cfg->r4fp &&
 469                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 470                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 471                 MonoInst *conv;
 472
 473                 /* Mixing r4/r8 is allowed by the spec */
 474                 if (arg1->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg1 = dreg;
 480                         *arg1_ref = conv;
 481                 }
 482                 if (arg2->type == STACK_R4) {
 483                         int dreg = alloc_freg (cfg);
 484
 485                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 486                         conv->type = STACK_R8;
 487                         ins->sreg2 = dreg;
 488                         *arg2_ref = conv;
 489                 }
 490         }
 491
 492 #if SIZEOF_REGISTER == 8
 493         /* FIXME: Need to add many more cases */
 494         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 495                 MonoInst *widen;
 496
 497                 int dr = alloc_preg (cfg);
 498                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 499                 (ins)->sreg2 = widen->dreg;
 500         }
 501 #endif
 502 }
 503
 504 #define ADD_BINOP(op) do {      \
 505                 MONO_INST_NEW (cfg, ins, (op)); \
 506                 sp -= 2;        \
 507                 ins->sreg1 = sp [0]->dreg;      \
 508                 ins->sreg2 = sp [1]->dreg;      \
 509                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 510                 CHECK_TYPE (ins);       \
 511                 /* Have to insert a widening op */               \
 512         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 513         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 514         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 515         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 516         } while (0)
 517
 518 #define ADD_UNOP(op) do {       \
 519                 MONO_INST_NEW (cfg, ins, (op)); \
 520                 sp--;   \
 521                 ins->sreg1 = sp [0]->dreg;      \
 522                 type_from_op (cfg, ins, sp [0], NULL);  \
 523                 CHECK_TYPE (ins);       \
 524         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 525         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 526                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 527         } while (0)
 528
 529 #define ADD_BINCOND(next_block) do {    \
 530                 MonoInst *cmp;  \
 531                 sp -= 2; \
 532                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 533                 cmp->sreg1 = sp [0]->dreg;      \
 534                 cmp->sreg2 = sp [1]->dreg;      \
 535                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 536                 CHECK_TYPE (cmp);       \
 537                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 538                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 539                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 540                 GET_BBLOCK (cfg, tblock, target);               \
 541                 link_bblock (cfg, cfg->cbb, tblock);    \
 542                 ins->inst_true_bb = tblock;     \
 543                 if ((next_block)) {     \
 544                         link_bblock (cfg, cfg->cbb, (next_block));      \
 545                         ins->inst_false_bb = (next_block);      \
 546                         start_new_bblock = 1;   \
 547                 } else {        \
 548                         GET_BBLOCK (cfg, tblock, ip);           \
 549                         link_bblock (cfg, cfg->cbb, tblock);    \
 550                         ins->inst_false_bb = tblock;    \
 551                         start_new_bblock = 2;   \
 552                 }       \
 553                 if (sp != stack_start) {                                                                        \
 554                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 555                         CHECK_UNVERIFIABLE (cfg); \
 556                 } \
 557         MONO_ADD_INS (cfg->cbb, cmp); \
 558                 MONO_ADD_INS (cfg->cbb, ins);   \
 559         } while (0)
 560
 561 /* *
 562  * link_bblock: Links two basic blocks
 563  *
 564  * links two basic blocks in the control flow graph, the 'from'
 565  * argument is the starting block and the 'to' argument is the block
 566  * the control flow ends to after 'from'.
 567  */
 568 static void
 569 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 570 {
 571         MonoBasicBlock **newa;
 572         int i, found;
 573
 574 #if 0
 575         if (from->cil_code) {
 576                 if (to->cil_code)
 577                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 578                 else
 579                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 580         } else {
 581                 if (to->cil_code)
 582                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 583                 else
 584                         printf ("edge from entry to exit\n");
 585         }
 586 #endif
 587
 588         found = FALSE;
 589         for (i = 0; i < from->out_count; ++i) {
 590                 if (to == from->out_bb [i]) {
 591                         found = TRUE;
 592                         break;
 593                 }
 594         }
 595         if (!found) {
 596                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 597                 for (i = 0; i < from->out_count; ++i) {
 598                         newa [i] = from->out_bb [i];
 599                 }
 600                 newa [i] = to;
 601                 from->out_count++;
 602                 from->out_bb = newa;
 603         }
 604
 605         found = FALSE;
 606         for (i = 0; i < to->in_count; ++i) {
 607                 if (from == to->in_bb [i]) {
 608                         found = TRUE;
 609                         break;
 610                 }
 611         }
 612         if (!found) {
 613                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 614                 for (i = 0; i < to->in_count; ++i) {
 615                         newa [i] = to->in_bb [i];
 616                 }
 617                 newa [i] = from;
 618                 to->in_count++;
 619                 to->in_bb = newa;
 620         }
 621 }
 622
 623 void
 624 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 625 {
 626         link_bblock (cfg, from, to);
 627 }
 628
 629 /**
 630  * mono_find_block_region:
 631  *
 632  *   We mark each basic block with a region ID. We use that to avoid BB
 633  *   optimizations when blocks are in different regions.
 634  *
 635  * Returns:
 636  *   A region token that encodes where this region is, and information
 637  *   about the clause owner for this block.
 638  *
 639  *   The region encodes the try/catch/filter clause that owns this block
 640  *   as well as the type.  -1 is a special value that represents a block
 641  *   that is in none of try/catch/filter.
 642  */
 643 static int
 644 mono_find_block_region (MonoCompile *cfg, int offset)
 645 {
 646         MonoMethodHeader *header = cfg->header;
 647         MonoExceptionClause *clause;
 648         int i;
 649
 650         for (i = 0; i < header->num_clauses; ++i) {
 651                 clause = &header->clauses [i];
 652                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 653                     (offset < (clause->handler_offset)))
 654                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 655
 656                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 657                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 658                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 659                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 660                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 661                         else
 662                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 663                 }
 664         }
 665         for (i = 0; i < header->num_clauses; ++i) {
 666                 clause = &header->clauses [i];
 667
 668                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 669                         return ((i + 1) << 8) | clause->flags;
 670         }
 671
 672         return -1;
 673 }
 674
 675 static gboolean
 676 ip_in_finally_clause (MonoCompile *cfg, int offset)
 677 {
 678         MonoMethodHeader *header = cfg->header;
 679         MonoExceptionClause *clause;
 680         int i;
 681
 682         for (i = 0; i < header->num_clauses; ++i) {
 683                 clause = &header->clauses [i];
 684                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 685                         continue;
 686
 687                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 688                         return TRUE;
 689         }
 690         return FALSE;
 691 }
 692
 693 static GList*
 694 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 695 {
 696         MonoMethodHeader *header = cfg->header;
 697         MonoExceptionClause *clause;
 698         int i;
 699         GList *res = NULL;
 700
 701         for (i = 0; i < header->num_clauses; ++i) {
 702                 clause = &header->clauses [i];
 703                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 704                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 705                         if (clause->flags == type)
 706                                 res = g_list_append (res, clause);
 707                 }
 708         }
 709         return res;
 710 }
 711
 712 static void
 713 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 714 {
 715         MonoInst *var;
 716
 717         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 718         if (var)
 719                 return;
 720
 721         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 722         /* prevent it from being register allocated */
 723         var->flags |= MONO_INST_VOLATILE;
 724
 725         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 726 }
 727
 728 MonoInst *
 729 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 730 {
 731         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732 }
 733
 734 static MonoInst*
 735 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 736 {
 737         MonoInst *var;
 738
 739         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 740         if (var)
 741                 return var;
 742
 743         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 744         /* prevent it from being register allocated */
 745         var->flags |= MONO_INST_VOLATILE;
 746
 747         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 748
 749         return var;
 750 }
 751
 752 /*
 753  * Returns the type used in the eval stack when @type is loaded.
 754  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 755  */
 756 void
 757 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 758 {
 759         MonoClass *klass;
 760
 761         type = mini_get_underlying_type (type);
 762         inst->klass = klass = mono_class_from_mono_type (type);
 763         if (type->byref) {
 764                 inst->type = STACK_MP;
 765                 return;
 766         }
 767
 768 handle_enum:
 769         switch (type->type) {
 770         case MONO_TYPE_VOID:
 771                 inst->type = STACK_INV;
 772                 return;
 773         case MONO_TYPE_I1:
 774         case MONO_TYPE_U1:
 775         case MONO_TYPE_I2:
 776         case MONO_TYPE_U2:
 777         case MONO_TYPE_I4:
 778         case MONO_TYPE_U4:
 779                 inst->type = STACK_I4;
 780                 return;
 781         case MONO_TYPE_I:
 782         case MONO_TYPE_U:
 783         case MONO_TYPE_PTR:
 784         case MONO_TYPE_FNPTR:
 785                 inst->type = STACK_PTR;
 786                 return;
 787         case MONO_TYPE_CLASS:
 788         case MONO_TYPE_STRING:
 789         case MONO_TYPE_OBJECT:
 790         case MONO_TYPE_SZARRAY:
 791         case MONO_TYPE_ARRAY:
 792                 inst->type = STACK_OBJ;
 793                 return;
 794         case MONO_TYPE_I8:
 795         case MONO_TYPE_U8:
 796                 inst->type = STACK_I8;
 797                 return;
 798         case MONO_TYPE_R4:
 799                 inst->type = cfg->r4_stack_type;
 800                 break;
 801         case MONO_TYPE_R8:
 802                 inst->type = STACK_R8;
 803                 return;
 804         case MONO_TYPE_VALUETYPE:
 805                 if (type->data.klass->enumtype) {
 806                         type = mono_class_enum_basetype (type->data.klass);
 807                         goto handle_enum;
 808                 } else {
 809                         inst->klass = klass;
 810                         inst->type = STACK_VTYPE;
 811                         return;
 812                 }
 813         case MONO_TYPE_TYPEDBYREF:
 814                 inst->klass = mono_defaults.typed_reference_class;
 815                 inst->type = STACK_VTYPE;
 816                 return;
 817         case MONO_TYPE_GENERICINST:
 818                 type = &type->data.generic_class->container_class->byval_arg;
 819                 goto handle_enum;
 820         case MONO_TYPE_VAR:
 821         case MONO_TYPE_MVAR:
 822                 g_assert (cfg->gshared);
 823                 if (mini_is_gsharedvt_type (type)) {
 824                         g_assert (cfg->gsharedvt);
 825                         inst->type = STACK_VTYPE;
 826                 } else {
 827                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 828                 }
 829                 return;
 830         default:
 831                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 832         }
 833 }
 834
 835 /*
 836  * The following tables are used to quickly validate the IL code in type_from_op ().
 837  */
 838 static const char
 839 bin_num_table [STACK_MAX] [STACK_MAX] = {
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 841         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 842         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 843         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 844         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 845         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 846         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 847         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 848         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 849 };
 850
 851 static const char
 852 neg_table [] = {
 853         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 854 };
 855
 856 /* reduce the size of this table */
 857 static const char
 858 bin_int_table [STACK_MAX] [STACK_MAX] = {
 859         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 860         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 861         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 862         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 863         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 864         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 865         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 866         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 867 };
 868
 869 static const char
 870 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 871 /*      Inv i  L  p  F  &  O  vt r4 */
 872         {0},
 873         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 874         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 875         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 876         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 877         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 878         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 879         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 880         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 881 };
 882
 883 /* reduce the size of this table */
 884 static const char
 885 shift_table [STACK_MAX] [STACK_MAX] = {
 886         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 887         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 888         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 889         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 890         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 891         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 892         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 893         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 894 };
 895
 896 /*
 897  * Tables to map from the non-specific opcode to the matching
 898  * type-specific opcode.
 899  */
 900 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 901 static const guint16
 902 binops_op_map [STACK_MAX] = {
 903         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
 904 };
 905
 906 /* handles from CEE_NEG to CEE_CONV_U8 */
 907 static const guint16
 908 unops_op_map [STACK_MAX] = {
 909         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
 910 };
 911
 912 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 913 static const guint16
 914 ovfops_op_map [STACK_MAX] = {
 915         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
 916 };
 917
 918 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 919 static const guint16
 920 ovf2ops_op_map [STACK_MAX] = {
 921         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
 922 };
 923
 924 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 925 static const guint16
 926 ovf3ops_op_map [STACK_MAX] = {
 927         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
 928 };
 929
 930 /* handles from CEE_BEQ to CEE_BLT_UN */
 931 static const guint16
 932 beqops_op_map [STACK_MAX] = {
 933         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
 934 };
 935
 936 /* handles from CEE_CEQ to CEE_CLT_UN */
 937 static const guint16
 938 ceqops_op_map [STACK_MAX] = {
 939         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
 940 };
 941
 942 /*
 943  * Sets ins->type (the type on the eval stack) according to the
 944  * type of the opcode and the arguments to it.
 945  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 946  *
 947  * FIXME: this function sets ins->type unconditionally in some cases, but
 948  * it should set it to invalid for some types (a conv.x on an object)
 949  */
 950 static void
 951 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 952 {
 953         switch (ins->opcode) {
 954         /* binops */
 955         case CEE_ADD:
 956         case CEE_SUB:
 957         case CEE_MUL:
 958         case CEE_DIV:
 959         case CEE_REM:
 960                 /* FIXME: check unverifiable args for STACK_MP */
 961                 ins->type = bin_num_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_DIV_UN:
 965         case CEE_REM_UN:
 966         case CEE_AND:
 967         case CEE_OR:
 968         case CEE_XOR:
 969                 ins->type = bin_int_table [src1->type] [src2->type];
 970                 ins->opcode += binops_op_map [ins->type];
 971                 break;
 972         case CEE_SHL:
 973         case CEE_SHR:
 974         case CEE_SHR_UN:
 975                 ins->type = shift_table [src1->type] [src2->type];
 976                 ins->opcode += binops_op_map [ins->type];
 977                 break;
 978         case OP_COMPARE:
 979         case OP_LCOMPARE:
 980         case OP_ICOMPARE:
 981                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 982                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 983                         ins->opcode = OP_LCOMPARE;
 984                 else if (src1->type == STACK_R4)
 985                         ins->opcode = OP_RCOMPARE;
 986                 else if (src1->type == STACK_R8)
 987                         ins->opcode = OP_FCOMPARE;
 988                 else
 989                         ins->opcode = OP_ICOMPARE;
 990                 break;
 991         case OP_ICOMPARE_IMM:
 992                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 993                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 994                         ins->opcode = OP_LCOMPARE_IMM;
 995                 break;
 996         case CEE_BEQ:
 997         case CEE_BGE:
 998         case CEE_BGT:
 999         case CEE_BLE:
1000         case CEE_BLT:
1001         case CEE_BNE_UN:
1002         case CEE_BGE_UN:
1003         case CEE_BGT_UN:
1004         case CEE_BLE_UN:
1005         case CEE_BLT_UN:
1006                 ins->opcode += beqops_op_map [src1->type];
1007                 break;
1008         case OP_CEQ:
1009                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1010                 ins->opcode += ceqops_op_map [src1->type];
1011                 break;
1012         case OP_CGT:
1013         case OP_CGT_UN:
1014         case OP_CLT:
1015         case OP_CLT_UN:
1016                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1017                 ins->opcode += ceqops_op_map [src1->type];
1018                 break;
1019         /* unops */
1020         case CEE_NEG:
1021                 ins->type = neg_table [src1->type];
1022                 ins->opcode += unops_op_map [ins->type];
1023                 break;
1024         case CEE_NOT:
1025                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1026                         ins->type = src1->type;
1027                 else
1028                         ins->type = STACK_INV;
1029                 ins->opcode += unops_op_map [ins->type];
1030                 break;
1031         case CEE_CONV_I1:
1032         case CEE_CONV_I2:
1033         case CEE_CONV_I4:
1034         case CEE_CONV_U4:
1035                 ins->type = STACK_I4;
1036                 ins->opcode += unops_op_map [src1->type];
1037                 break;
1038         case CEE_CONV_R_UN:
1039                 ins->type = STACK_R8;
1040                 switch (src1->type) {
1041                 case STACK_I4:
1042                 case STACK_PTR:
1043                         ins->opcode = OP_ICONV_TO_R_UN;
1044                         break;
1045                 case STACK_I8:
1046                         ins->opcode = OP_LCONV_TO_R_UN;
1047                         break;
1048                 }
1049                 break;
1050         case CEE_CONV_OVF_I1:
1051         case CEE_CONV_OVF_U1:
1052         case CEE_CONV_OVF_I2:
1053         case CEE_CONV_OVF_U2:
1054         case CEE_CONV_OVF_I4:
1055         case CEE_CONV_OVF_U4:
1056                 ins->type = STACK_I4;
1057                 ins->opcode += ovf3ops_op_map [src1->type];
1058                 break;
1059         case CEE_CONV_OVF_I_UN:
1060         case CEE_CONV_OVF_U_UN:
1061                 ins->type = STACK_PTR;
1062                 ins->opcode += ovf2ops_op_map [src1->type];
1063                 break;
1064         case CEE_CONV_OVF_I1_UN:
1065         case CEE_CONV_OVF_I2_UN:
1066         case CEE_CONV_OVF_I4_UN:
1067         case CEE_CONV_OVF_U1_UN:
1068         case CEE_CONV_OVF_U2_UN:
1069         case CEE_CONV_OVF_U4_UN:
1070                 ins->type = STACK_I4;
1071                 ins->opcode += ovf2ops_op_map [src1->type];
1072                 break;
1073         case CEE_CONV_U:
1074                 ins->type = STACK_PTR;
1075                 switch (src1->type) {
1076                 case STACK_I4:
1077                         ins->opcode = OP_ICONV_TO_U;
1078                         break;
1079                 case STACK_PTR:
1080                 case STACK_MP:
1081 #if SIZEOF_VOID_P == 8
1082                         ins->opcode = OP_LCONV_TO_U;
1083 #else
1084                         ins->opcode = OP_MOVE;
1085 #endif
1086                         break;
1087                 case STACK_I8:
1088                         ins->opcode = OP_LCONV_TO_U;
1089                         break;
1090                 case STACK_R8:
1091                         ins->opcode = OP_FCONV_TO_U;
1092                         break;
1093                 }
1094                 break;
1095         case CEE_CONV_I8:
1096         case CEE_CONV_U8:
1097                 ins->type = STACK_I8;
1098                 ins->opcode += unops_op_map [src1->type];
1099                 break;
1100         case CEE_CONV_OVF_I8:
1101         case CEE_CONV_OVF_U8:
1102                 ins->type = STACK_I8;
1103                 ins->opcode += ovf3ops_op_map [src1->type];
1104                 break;
1105         case CEE_CONV_OVF_U8_UN:
1106         case CEE_CONV_OVF_I8_UN:
1107                 ins->type = STACK_I8;
1108                 ins->opcode += ovf2ops_op_map [src1->type];
1109                 break;
1110         case CEE_CONV_R4:
1111                 ins->type = cfg->r4_stack_type;
1112                 ins->opcode += unops_op_map [src1->type];
1113                 break;
1114         case CEE_CONV_R8:
1115                 ins->type = STACK_R8;
1116                 ins->opcode += unops_op_map [src1->type];
1117                 break;
1118         case OP_CKFINITE:
1119                 ins->type = STACK_R8;
1120                 break;
1121         case CEE_CONV_U2:
1122         case CEE_CONV_U1:
1123                 ins->type = STACK_I4;
1124                 ins->opcode += ovfops_op_map [src1->type];
1125                 break;
1126         case CEE_CONV_I:
1127         case CEE_CONV_OVF_I:
1128         case CEE_CONV_OVF_U:
1129                 ins->type = STACK_PTR;
1130                 ins->opcode += ovfops_op_map [src1->type];
1131                 break;
1132         case CEE_ADD_OVF:
1133         case CEE_ADD_OVF_UN:
1134         case CEE_MUL_OVF:
1135         case CEE_MUL_OVF_UN:
1136         case CEE_SUB_OVF:
1137         case CEE_SUB_OVF_UN:
1138                 ins->type = bin_num_table [src1->type] [src2->type];
1139                 ins->opcode += ovfops_op_map [src1->type];
1140                 if (ins->type == STACK_R8)
1141                         ins->type = STACK_INV;
1142                 break;
1143         case OP_LOAD_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI1_MEMBASE:
1147         case OP_LOADU1_MEMBASE:
1148         case OP_LOADI2_MEMBASE:
1149         case OP_LOADU2_MEMBASE:
1150         case OP_LOADI4_MEMBASE:
1151         case OP_LOADU4_MEMBASE:
1152                 ins->type = STACK_PTR;
1153                 break;
1154         case OP_LOADI8_MEMBASE:
1155                 ins->type = STACK_I8;
1156                 break;
1157         case OP_LOADR4_MEMBASE:
1158                 ins->type = cfg->r4_stack_type;
1159                 break;
1160         case OP_LOADR8_MEMBASE:
1161                 ins->type = STACK_R8;
1162                 break;
1163         default:
1164                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1165                 break;
1166         }
1167
1168         if (ins->type == STACK_MP)
1169                 ins->klass = mono_defaults.object_class;
1170 }
1171
1172 static const char
1173 ldind_type [] = {
1174         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1175 };
1176
1177 #if 0
1178
1179 static const char
1180 param_table [STACK_MAX] [STACK_MAX] = {
1181         {0},
1182 };
1183
1184 static int
1185 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1186 {
1187         int i;
1188
1189         if (sig->hasthis) {
1190                 switch (args->type) {
1191                 case STACK_I4:
1192                 case STACK_I8:
1193                 case STACK_R8:
1194                 case STACK_VTYPE:
1195                 case STACK_INV:
1196                         return 0;
1197                 }
1198                 args++;
1199         }
1200         for (i = 0; i < sig->param_count; ++i) {
1201                 switch (args [i].type) {
1202                 case STACK_INV:
1203                         return 0;
1204                 case STACK_MP:
1205                         if (!sig->params [i]->byref)
1206                                 return 0;
1207                         continue;
1208                 case STACK_OBJ:
1209                         if (sig->params [i]->byref)
1210                                 return 0;
1211                         switch (sig->params [i]->type) {
1212                         case MONO_TYPE_CLASS:
1213                         case MONO_TYPE_STRING:
1214                         case MONO_TYPE_OBJECT:
1215                         case MONO_TYPE_SZARRAY:
1216                         case MONO_TYPE_ARRAY:
1217                                 break;
1218                         default:
1219                                 return 0;
1220                         }
1221                         continue;
1222                 case STACK_R8:
1223                         if (sig->params [i]->byref)
1224                                 return 0;
1225                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1226                                 return 0;
1227                         continue;
1228                 case STACK_PTR:
1229                 case STACK_I4:
1230                 case STACK_I8:
1231                 case STACK_VTYPE:
1232                         break;
1233                 }
1234                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1235                         return 0;*/
1236         }
1237         return 1;
1238 }
1239 #endif
1240
1241 /*
1242  * When we need a pointer to the current domain many times in a method, we
1243  * call mono_domain_get() once and we store the result in a local variable.
1244  * This function returns the variable that represents the MonoDomain*.
1245  */
1246 inline static MonoInst *
1247 mono_get_domainvar (MonoCompile *cfg)
1248 {
1249         if (!cfg->domainvar)
1250                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1251         return cfg->domainvar;
1252 }
1253
1254 /*
1255  * The got_var contains the address of the Global Offset Table when AOT
1256  * compiling.
1257  */
1258 MonoInst *
1259 mono_get_got_var (MonoCompile *cfg)
1260 {
1261         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1262                 return NULL;
1263         if (!cfg->got_var) {
1264                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1265         }
1266         return cfg->got_var;
1267 }
1268
1269 static MonoInst *
1270 mono_get_vtable_var (MonoCompile *cfg)
1271 {
1272         g_assert (cfg->gshared);
1273
1274         if (!cfg->rgctx_var) {
1275                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1276                 /* force the var to be stack allocated */
1277                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1278         }
1279
1280         return cfg->rgctx_var;
1281 }
1282
1283 static MonoType*
1284 type_from_stack_type (MonoInst *ins) {
1285         switch (ins->type) {
1286         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1287         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1288         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1289         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1290         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1291         case STACK_MP:
1292                 return &ins->klass->this_arg;
1293         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1294         case STACK_VTYPE: return &ins->klass->byval_arg;
1295         default:
1296                 g_error ("stack type %d to monotype not handled\n", ins->type);
1297         }
1298         return NULL;
1299 }
1300
1301 static G_GNUC_UNUSED int
1302 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1303 {
1304         t = mono_type_get_underlying_type (t);
1305         switch (t->type) {
1306         case MONO_TYPE_I1:
1307         case MONO_TYPE_U1:
1308         case MONO_TYPE_I2:
1309         case MONO_TYPE_U2:
1310         case MONO_TYPE_I4:
1311         case MONO_TYPE_U4:
1312                 return STACK_I4;
1313         case MONO_TYPE_I:
1314         case MONO_TYPE_U:
1315         case MONO_TYPE_PTR:
1316         case MONO_TYPE_FNPTR:
1317                 return STACK_PTR;
1318         case MONO_TYPE_CLASS:
1319         case MONO_TYPE_STRING:
1320         case MONO_TYPE_OBJECT:
1321         case MONO_TYPE_SZARRAY:
1322         case MONO_TYPE_ARRAY:
1323                 return STACK_OBJ;
1324         case MONO_TYPE_I8:
1325         case MONO_TYPE_U8:
1326                 return STACK_I8;
1327         case MONO_TYPE_R4:
1328                 return cfg->r4_stack_type;
1329         case MONO_TYPE_R8:
1330                 return STACK_R8;
1331         case MONO_TYPE_VALUETYPE:
1332         case MONO_TYPE_TYPEDBYREF:
1333                 return STACK_VTYPE;
1334         case MONO_TYPE_GENERICINST:
1335                 if (mono_type_generic_inst_is_valuetype (t))
1336                         return STACK_VTYPE;
1337                 else
1338                         return STACK_OBJ;
1339                 break;
1340         default:
1341                 g_assert_not_reached ();
1342         }
1343
1344         return -1;
1345 }
1346
1347 static MonoClass*
1348 array_access_to_klass (int opcode)
1349 {
1350         switch (opcode) {
1351         case CEE_LDELEM_U1:
1352                 return mono_defaults.byte_class;
1353         case CEE_LDELEM_U2:
1354                 return mono_defaults.uint16_class;
1355         case CEE_LDELEM_I:
1356         case CEE_STELEM_I:
1357                 return mono_defaults.int_class;
1358         case CEE_LDELEM_I1:
1359         case CEE_STELEM_I1:
1360                 return mono_defaults.sbyte_class;
1361         case CEE_LDELEM_I2:
1362         case CEE_STELEM_I2:
1363                 return mono_defaults.int16_class;
1364         case CEE_LDELEM_I4:
1365         case CEE_STELEM_I4:
1366                 return mono_defaults.int32_class;
1367         case CEE_LDELEM_U4:
1368                 return mono_defaults.uint32_class;
1369         case CEE_LDELEM_I8:
1370         case CEE_STELEM_I8:
1371                 return mono_defaults.int64_class;
1372         case CEE_LDELEM_R4:
1373         case CEE_STELEM_R4:
1374                 return mono_defaults.single_class;
1375         case CEE_LDELEM_R8:
1376         case CEE_STELEM_R8:
1377                 return mono_defaults.double_class;
1378         case CEE_LDELEM_REF:
1379         case CEE_STELEM_REF:
1380                 return mono_defaults.object_class;
1381         default:
1382                 g_assert_not_reached ();
1383         }
1384         return NULL;
1385 }
1386
1387 /*
1388  * We try to share variables when possible
1389  */
1390 static MonoInst *
1391 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1392 {
1393         MonoInst *res;
1394         int pos, vnum;
1395
1396         /* inlining can result in deeper stacks */
1397         if (slot >= cfg->header->max_stack)
1398                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1399
1400         pos = ins->type - 1 + slot * STACK_MAX;
1401
1402         switch (ins->type) {
1403         case STACK_I4:
1404         case STACK_I8:
1405         case STACK_R8:
1406         case STACK_PTR:
1407         case STACK_MP:
1408         case STACK_OBJ:
1409                 if ((vnum = cfg->intvars [pos]))
1410                         return cfg->varinfo [vnum];
1411                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1412                 cfg->intvars [pos] = res->inst_c0;
1413                 break;
1414         default:
1415                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1416         }
1417         return res;
1418 }
1419
1420 static void
1421 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1422 {
1423         /*
1424          * Don't use this if a generic_context is set, since that means AOT can't
1425          * look up the method using just the image+token.
1426          * table == 0 means this is a reference made from a wrapper.
1427          */
1428         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1429                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1430                 jump_info_token->image = image;
1431                 jump_info_token->token = token;
1432                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1433         }
1434 }
1435
1436 /*
1437  * This function is called to handle items that are left on the evaluation stack
1438  * at basic block boundaries. What happens is that we save the values to local variables
1439  * and we reload them later when first entering the target basic block (with the
1440  * handle_loaded_temps () function).
1441  * A single joint point will use the same variables (stored in the array bb->out_stack or
1442  * bb->in_stack, if the basic block is before or after the joint point).
1443  *
1444  * This function needs to be called _before_ emitting the last instruction of
1445  * the bb (i.e. before emitting a branch).
1446  * If the stack merge fails at a join point, cfg->unverifiable is set.
1447  */
1448 static void
1449 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1450 {
1451         int i, bindex;
1452         MonoBasicBlock *bb = cfg->cbb;
1453         MonoBasicBlock *outb;
1454         MonoInst *inst, **locals;
1455         gboolean found;
1456
1457         if (!count)
1458                 return;
1459         if (cfg->verbose_level > 3)
1460                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1461         if (!bb->out_scount) {
1462                 bb->out_scount = count;
1463                 //printf ("bblock %d has out:", bb->block_num);
1464                 found = FALSE;
1465                 for (i = 0; i < bb->out_count; ++i) {
1466                         outb = bb->out_bb [i];
1467                         /* exception handlers are linked, but they should not be considered for stack args */
1468                         if (outb->flags & BB_EXCEPTION_HANDLER)
1469                                 continue;
1470                         //printf (" %d", outb->block_num);
1471                         if (outb->in_stack) {
1472                                 found = TRUE;
1473                                 bb->out_stack = outb->in_stack;
1474                                 break;
1475                         }
1476                 }
1477                 //printf ("\n");
1478                 if (!found) {
1479                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1480                         for (i = 0; i < count; ++i) {
1481                                 /*
1482                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1483                                  * stack slot and if they are of the same type.
1484                                  * This won't cause conflicts since if 'local' is used to
1485                                  * store one of the values in the in_stack of a bblock, then
1486                                  * the same variable will be used for the same outgoing stack
1487                                  * slot as well.
1488                                  * This doesn't work when inlining methods, since the bblocks
1489                                  * in the inlined methods do not inherit their in_stack from
1490                                  * the bblock they are inlined to. See bug #58863 for an
1491                                  * example.
1492                                  */
1493                                 if (cfg->inlined_method)
1494                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1495                                 else
1496                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1497                         }
1498                 }
1499         }
1500
1501         for (i = 0; i < bb->out_count; ++i) {
1502                 outb = bb->out_bb [i];
1503                 /* exception handlers are linked, but they should not be considered for stack args */
1504                 if (outb->flags & BB_EXCEPTION_HANDLER)
1505                         continue;
1506                 if (outb->in_scount) {
1507                         if (outb->in_scount != bb->out_scount) {
1508                                 cfg->unverifiable = TRUE;
1509                                 return;
1510                         }
1511                         continue; /* check they are the same locals */
1512                 }
1513                 outb->in_scount = count;
1514                 outb->in_stack = bb->out_stack;
1515         }
1516
1517         locals = bb->out_stack;
1518         cfg->cbb = bb;
1519         for (i = 0; i < count; ++i) {
1520                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1521                 inst->cil_code = sp [i]->cil_code;
1522                 sp [i] = locals [i];
1523                 if (cfg->verbose_level > 3)
1524                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1525         }
1526
1527         /*
1528          * It is possible that the out bblocks already have in_stack assigned, and
1529          * the in_stacks differ. In this case, we will store to all the different
1530          * in_stacks.
1531          */
1532
1533         found = TRUE;
1534         bindex = 0;
1535         while (found) {
1536                 /* Find a bblock which has a different in_stack */
1537                 found = FALSE;
1538                 while (bindex < bb->out_count) {
1539                         outb = bb->out_bb [bindex];
1540                         /* exception handlers are linked, but they should not be considered for stack args */
1541                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1542                                 bindex++;
1543                                 continue;
1544                         }
1545                         if (outb->in_stack != locals) {
1546                                 for (i = 0; i < count; ++i) {
1547                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1548                                         inst->cil_code = sp [i]->cil_code;
1549                                         sp [i] = locals [i];
1550                                         if (cfg->verbose_level > 3)
1551                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1552                                 }
1553                                 locals = outb->in_stack;
1554                                 found = TRUE;
1555                                 break;
1556                         }
1557                         bindex ++;
1558                 }
1559         }
1560 }
1561
1562 static MonoInst*
1563 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1564 {
1565         MonoInst *ins;
1566
1567         if (cfg->compile_aot) {
1568                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1569         } else {
1570                 MonoJumpInfo ji;
1571                 gpointer target;
1572                 MonoError error;
1573
1574                 ji.type = patch_type;
1575                 ji.data.target = data;
1576                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1577                 mono_error_assert_ok (&error);
1578
1579                 EMIT_NEW_PCONST (cfg, ins, target);
1580         }
1581         return ins;
1582 }
1583
1584 MonoInst*
1585 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1586 {
1587         return emit_runtime_constant (cfg, patch_type, data);
1588 }
1589
1590 static void
1591 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1592 {
1593         int val_reg;
1594
1595         g_assert (val == 0);
1596
1597         if (align == 0)
1598                 align = 4;
1599
1600         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1601                 switch (size) {
1602                 case 1:
1603                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1604                         return;
1605                 case 2:
1606                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1607                         return;
1608                 case 4:
1609                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1610                         return;
1611 #if SIZEOF_REGISTER == 8
1612                 case 8:
1613                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1614                         return;
1615 #endif
1616                 }
1617         }
1618
1619         val_reg = alloc_preg (cfg);
1620
1621         if (SIZEOF_REGISTER == 8)
1622                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1623         else
1624                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1625
1626         if (align < 4) {
1627                 /* This could be optimized further if neccesary */
1628                 while (size >= 1) {
1629                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1630                         offset += 1;
1631                         size -= 1;
1632                 }
1633                 return;
1634         }
1635
1636         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1637                 if (offset % 8) {
1638                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1639                         offset += 4;
1640                         size -= 4;
1641                 }
1642                 while (size >= 8) {
1643                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1644                         offset += 8;
1645                         size -= 8;
1646                 }
1647         }
1648
1649         while (size >= 4) {
1650                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1651                 offset += 4;
1652                 size -= 4;
1653         }
1654         while (size >= 2) {
1655                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1656                 offset += 2;
1657                 size -= 2;
1658         }
1659         while (size >= 1) {
1660                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1661                 offset += 1;
1662                 size -= 1;
1663         }
1664 }
1665
1666 void
1667 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1668 {
1669         int cur_reg;
1670
1671         if (align == 0)
1672                 align = 4;
1673
1674         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1675         g_assert (size < 10000);
1676
1677         if (align < 4) {
1678                 /* This could be optimized further if neccesary */
1679                 while (size >= 1) {
1680                         cur_reg = alloc_preg (cfg);
1681                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1682                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1683                         doffset += 1;
1684                         soffset += 1;
1685                         size -= 1;
1686                 }
1687         }
1688
1689         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1690                 while (size >= 8) {
1691                         cur_reg = alloc_preg (cfg);
1692                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1693                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1694                         doffset += 8;
1695                         soffset += 8;
1696                         size -= 8;
1697                 }
1698         }
1699
1700         while (size >= 4) {
1701                 cur_reg = alloc_preg (cfg);
1702                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1703                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1704                 doffset += 4;
1705                 soffset += 4;
1706                 size -= 4;
1707         }
1708         while (size >= 2) {
1709                 cur_reg = alloc_preg (cfg);
1710                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1711                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1712                 doffset += 2;
1713                 soffset += 2;
1714                 size -= 2;
1715         }
1716         while (size >= 1) {
1717                 cur_reg = alloc_preg (cfg);
1718                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1719                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1720                 doffset += 1;
1721                 soffset += 1;
1722                 size -= 1;
1723         }
1724 }
1725
1726 static MonoInst*
1727 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1728 {
1729         int tls_offset = mono_tls_get_tls_offset (key);
1730
1731         if (cfg->compile_aot)
1732                 return NULL;
1733
1734         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1735                 MonoInst *ins;
1736                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1737                 ins->dreg = mono_alloc_preg (cfg);
1738                 ins->inst_offset = tls_offset;
1739                 return ins;
1740         }
1741         return NULL;
1742 }
1743
1744 static MonoInst*
1745 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1746 {
1747         int tls_offset = mono_tls_get_tls_offset (key);
1748
1749         if (cfg->compile_aot)
1750                 return NULL;
1751
1752         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1753                 MonoInst *ins;
1754                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1755                 ins->sreg1 = value->dreg;
1756                 ins->inst_offset = tls_offset;
1757                 return ins;
1758         }
1759         return NULL;
1760 }
1761
1762
1763 MonoInst*
1764 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1765 {
1766         MonoInst *fast_tls = NULL;
1767
1768         if (!mini_get_debug_options ()->use_fallback_tls)
1769                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1770
1771         if (fast_tls) {
1772                 MONO_ADD_INS (cfg->cbb, fast_tls);
1773                 return fast_tls;
1774         }
1775
1776         if (cfg->compile_aot) {
1777                 MonoInst *addr;
1778                 /*
1779                  * tls getters are critical pieces of code and we don't want to resolve them
1780                  * through the standard plt/tramp mechanism since we might expose ourselves
1781                  * to crashes and infinite recursions.
1782                  */
1783                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1784                 return mono_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1785         } else {
1786                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1787                 return mono_emit_jit_icall (cfg, getter, NULL);
1788         }
1789 }
1790
1791 static MonoInst*
1792 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1793 {
1794         MonoInst *fast_tls = NULL;
1795
1796         if (!mini_get_debug_options ()->use_fallback_tls)
1797                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1798
1799         if (fast_tls) {
1800                 MONO_ADD_INS (cfg->cbb, fast_tls);
1801                 return fast_tls;
1802         }
1803
1804         if (cfg->compile_aot) {
1805                 MonoInst *addr;
1806                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1807                 return mono_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1808         } else {
1809                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1810                 return mono_emit_jit_icall (cfg, setter, &value);
1811         }
1812 }
1813
1814 /*
1815  * emit_push_lmf:
1816  *
1817  *   Emit IR to push the current LMF onto the LMF stack.
1818  */
1819 static void
1820 emit_push_lmf (MonoCompile *cfg)
1821 {
1822         /*
1823          * Emit IR to push the LMF:
1824          * lmf_addr = <lmf_addr from tls>
1825          * lmf->lmf_addr = lmf_addr
1826          * lmf->prev_lmf = *lmf_addr
1827          * *lmf_addr = lmf
1828          */
1829         MonoInst *ins, *lmf_ins;
1830
1831         if (!cfg->lmf_ir)
1832                 return;
1833
1834         if (cfg->lmf_ir_mono_lmf) {
1835                 MonoInst *lmf_vara_ins, *lmf_ins;
1836                 /* Load current lmf */
1837                 lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF);
1838                 g_assert (lmf_ins);
1839                 EMIT_NEW_VARLOADA (cfg, lmf_vara_ins, cfg->lmf_var, NULL);
1840                 /* Save previous_lmf */
1841                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_vara_ins->dreg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
1842                 /* Set new LMF */
1843                 mono_create_tls_set (cfg, lmf_vara_ins, TLS_KEY_LMF);
1844         } else {
1845                 int lmf_reg, prev_lmf_reg;
1846                 /*
1847                  * Store lmf_addr in a variable, so it can be allocated to a global register.
1848                  */
1849                 if (!cfg->lmf_addr_var)
1850                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1851
1852 #ifdef HOST_WIN32
1853                 ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1854                 g_assert (ins);
1855                 int jit_tls_dreg = ins->dreg;
1856
1857                 lmf_reg = alloc_preg (cfg);
1858                 EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1859 #else
1860                 lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1861                 g_assert (lmf_ins);
1862 #endif
1863                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1864
1865                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1866                 lmf_reg = ins->dreg;
1867
1868                 prev_lmf_reg = alloc_preg (cfg);
1869                 /* Save previous_lmf */
1870                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1871                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1872                 /* Set new lmf */
1873                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1874         }
1875 }
1876
1877 /*
1878  * emit_pop_lmf:
1879  *
1880  *   Emit IR to pop the current LMF from the LMF stack.
1881  */
1882 static void
1883 emit_pop_lmf (MonoCompile *cfg)
1884 {
1885         int lmf_reg, lmf_addr_reg;
1886         MonoInst *ins;
1887
1888         if (!cfg->lmf_ir)
1889                 return;
1890
1891         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1892         lmf_reg = ins->dreg;
1893
1894         if (cfg->lmf_ir_mono_lmf) {
1895                 /* Load previous_lmf */
1896                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, alloc_preg (cfg), lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1897                 /* Set new LMF */
1898                 mono_create_tls_set (cfg, ins, TLS_KEY_LMF);
1899         } else {
1900                 int prev_lmf_reg;
1901                 /*
1902                  * Emit IR to pop the LMF:
1903                  * *(lmf->lmf_addr) = lmf->prev_lmf
1904                  */
1905                 /* This could be called before emit_push_lmf () */
1906                 if (!cfg->lmf_addr_var)
1907                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1908                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
1909
1910                 prev_lmf_reg = alloc_preg (cfg);
1911                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1912                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1913         }
1914 }
1915
1916 static void
1917 emit_instrumentation_call (MonoCompile *cfg, void *func)
1918 {
1919         MonoInst *iargs [1];
1920
1921         /*
1922          * Avoid instrumenting inlined methods since it can
1923          * distort profiling results.
1924          */
1925         if (cfg->method != cfg->current_method)
1926                 return;
1927
1928         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
1929                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1930                 mono_emit_jit_icall (cfg, func, iargs);
1931         }
1932 }
1933
1934 static int
1935 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1936 {
1937 handle_enum:
1938         type = mini_get_underlying_type (type);
1939         switch (type->type) {
1940         case MONO_TYPE_VOID:
1941                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1942         case MONO_TYPE_I1:
1943         case MONO_TYPE_U1:
1944         case MONO_TYPE_I2:
1945         case MONO_TYPE_U2:
1946         case MONO_TYPE_I4:
1947         case MONO_TYPE_U4:
1948                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1949         case MONO_TYPE_I:
1950         case MONO_TYPE_U:
1951         case MONO_TYPE_PTR:
1952         case MONO_TYPE_FNPTR:
1953                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1954         case MONO_TYPE_CLASS:
1955         case MONO_TYPE_STRING:
1956         case MONO_TYPE_OBJECT:
1957         case MONO_TYPE_SZARRAY:
1958         case MONO_TYPE_ARRAY:
1959                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1960         case MONO_TYPE_I8:
1961         case MONO_TYPE_U8:
1962                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1963         case MONO_TYPE_R4:
1964                 if (cfg->r4fp)
1965                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1966                 else
1967                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1968         case MONO_TYPE_R8:
1969                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1970         case MONO_TYPE_VALUETYPE:
1971                 if (type->data.klass->enumtype) {
1972                         type = mono_class_enum_basetype (type->data.klass);
1973                         goto handle_enum;
1974                 } else
1975                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1976         case MONO_TYPE_TYPEDBYREF:
1977                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1978         case MONO_TYPE_GENERICINST:
1979                 type = &type->data.generic_class->container_class->byval_arg;
1980                 goto handle_enum;
1981         case MONO_TYPE_VAR:
1982         case MONO_TYPE_MVAR:
1983                 /* gsharedvt */
1984                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1985         default:
1986                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1987         }
1988         return -1;
1989 }
1990
1991 //XXX this ignores if t is byref
1992 #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)))))
1993
1994 /*
1995  * target_type_is_incompatible:
1996  * @cfg: MonoCompile context
1997  *
1998  * Check that the item @arg on the evaluation stack can be stored
1999  * in the target type (can be a local, or field, etc).
2000  * The cfg arg can be used to check if we need verification or just
2001  * validity checks.
2002  *
2003  * Returns: non-0 value if arg can't be stored on a target.
2004  */
2005 static int
2006 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2007 {
2008         MonoType *simple_type;
2009         MonoClass *klass;
2010
2011         if (target->byref) {
2012                 /* FIXME: check that the pointed to types match */
2013                 if (arg->type == STACK_MP) {
2014                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2015                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2016                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2017
2018                         /* if the target is native int& or same type */
2019                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2020                                 return 0;
2021
2022                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2023                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2024                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2025                                 return 0;
2026                         return 1;
2027                 }
2028                 if (arg->type == STACK_PTR)
2029                         return 0;
2030                 return 1;
2031         }
2032
2033         simple_type = mini_get_underlying_type (target);
2034         switch (simple_type->type) {
2035         case MONO_TYPE_VOID:
2036                 return 1;
2037         case MONO_TYPE_I1:
2038         case MONO_TYPE_U1:
2039         case MONO_TYPE_I2:
2040         case MONO_TYPE_U2:
2041         case MONO_TYPE_I4:
2042         case MONO_TYPE_U4:
2043                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2044                         return 1;
2045                 return 0;
2046         case MONO_TYPE_PTR:
2047                 /* STACK_MP is needed when setting pinned locals */
2048                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2049                         return 1;
2050                 return 0;
2051         case MONO_TYPE_I:
2052         case MONO_TYPE_U:
2053         case MONO_TYPE_FNPTR:
2054                 /*
2055                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2056                  * in native int. (#688008).
2057                  */
2058                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2059                         return 1;
2060                 return 0;
2061         case MONO_TYPE_CLASS:
2062         case MONO_TYPE_STRING:
2063         case MONO_TYPE_OBJECT:
2064         case MONO_TYPE_SZARRAY:
2065         case MONO_TYPE_ARRAY:
2066                 if (arg->type != STACK_OBJ)
2067                         return 1;
2068                 /* FIXME: check type compatibility */
2069                 return 0;
2070         case MONO_TYPE_I8:
2071         case MONO_TYPE_U8:
2072                 if (arg->type != STACK_I8)
2073                         return 1;
2074                 return 0;
2075         case MONO_TYPE_R4:
2076                 if (arg->type != cfg->r4_stack_type)
2077                         return 1;
2078                 return 0;
2079         case MONO_TYPE_R8:
2080                 if (arg->type != STACK_R8)
2081                         return 1;
2082                 return 0;
2083         case MONO_TYPE_VALUETYPE:
2084                 if (arg->type != STACK_VTYPE)
2085                         return 1;
2086                 klass = mono_class_from_mono_type (simple_type);
2087                 if (klass != arg->klass)
2088                         return 1;
2089                 return 0;
2090         case MONO_TYPE_TYPEDBYREF:
2091                 if (arg->type != STACK_VTYPE)
2092                         return 1;
2093                 klass = mono_class_from_mono_type (simple_type);
2094                 if (klass != arg->klass)
2095                         return 1;
2096                 return 0;
2097         case MONO_TYPE_GENERICINST:
2098                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2099                         MonoClass *target_class;
2100                         if (arg->type != STACK_VTYPE)
2101                                 return 1;
2102                         klass = mono_class_from_mono_type (simple_type);
2103                         target_class = mono_class_from_mono_type (target);
2104                         /* The second cases is needed when doing partial sharing */
2105                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2106                                 return 1;
2107                         return 0;
2108                 } else {
2109                         if (arg->type != STACK_OBJ)
2110                                 return 1;
2111                         /* FIXME: check type compatibility */
2112                         return 0;
2113                 }
2114         case MONO_TYPE_VAR:
2115         case MONO_TYPE_MVAR:
2116                 g_assert (cfg->gshared);
2117                 if (mini_type_var_is_vt (simple_type)) {
2118                         if (arg->type != STACK_VTYPE)
2119                                 return 1;
2120                 } else {
2121                         if (arg->type != STACK_OBJ)
2122                                 return 1;
2123                 }
2124                 return 0;
2125         default:
2126                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2127         }
2128         return 1;
2129 }
2130
2131 /*
2132  * Prepare arguments for passing to a function call.
2133  * Return a non-zero value if the arguments can't be passed to the given
2134  * signature.
2135  * The type checks are not yet complete and some conversions may need
2136  * casts on 32 or 64 bit architectures.
2137  *
2138  * FIXME: implement this using target_type_is_incompatible ()
2139  */
2140 static int
2141 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2142 {
2143         MonoType *simple_type;
2144         int i;
2145
2146         if (sig->hasthis) {
2147                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2148                         return 1;
2149                 args++;
2150         }
2151         for (i = 0; i < sig->param_count; ++i) {
2152                 if (sig->params [i]->byref) {
2153                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2154                                 return 1;
2155                         continue;
2156                 }
2157                 simple_type = mini_get_underlying_type (sig->params [i]);
2158 handle_enum:
2159                 switch (simple_type->type) {
2160                 case MONO_TYPE_VOID:
2161                         return 1;
2162                         continue;
2163                 case MONO_TYPE_I1:
2164                 case MONO_TYPE_U1:
2165                 case MONO_TYPE_I2:
2166                 case MONO_TYPE_U2:
2167                 case MONO_TYPE_I4:
2168                 case MONO_TYPE_U4:
2169                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2170                                 return 1;
2171                         continue;
2172                 case MONO_TYPE_I:
2173                 case MONO_TYPE_U:
2174                 case MONO_TYPE_PTR:
2175                 case MONO_TYPE_FNPTR:
2176                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2177                                 return 1;
2178                         continue;
2179                 case MONO_TYPE_CLASS:
2180                 case MONO_TYPE_STRING:
2181                 case MONO_TYPE_OBJECT:
2182                 case MONO_TYPE_SZARRAY:
2183                 case MONO_TYPE_ARRAY:
2184                         if (args [i]->type != STACK_OBJ)
2185                                 return 1;
2186                         continue;
2187                 case MONO_TYPE_I8:
2188                 case MONO_TYPE_U8:
2189                         if (args [i]->type != STACK_I8)
2190                                 return 1;
2191                         continue;
2192                 case MONO_TYPE_R4:
2193                         if (args [i]->type != cfg->r4_stack_type)
2194                                 return 1;
2195                         continue;
2196                 case MONO_TYPE_R8:
2197                         if (args [i]->type != STACK_R8)
2198                                 return 1;
2199                         continue;
2200                 case MONO_TYPE_VALUETYPE:
2201                         if (simple_type->data.klass->enumtype) {
2202                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2203                                 goto handle_enum;
2204                         }
2205                         if (args [i]->type != STACK_VTYPE)
2206                                 return 1;
2207                         continue;
2208                 case MONO_TYPE_TYPEDBYREF:
2209                         if (args [i]->type != STACK_VTYPE)
2210                                 return 1;
2211                         continue;
2212                 case MONO_TYPE_GENERICINST:
2213                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2214                         goto handle_enum;
2215                 case MONO_TYPE_VAR:
2216                 case MONO_TYPE_MVAR:
2217                         /* gsharedvt */
2218                         if (args [i]->type != STACK_VTYPE)
2219                                 return 1;
2220                         continue;
2221                 default:
2222                         g_error ("unknown type 0x%02x in check_call_signature",
2223                                  simple_type->type);
2224                 }
2225         }
2226         return 0;
2227 }
2228
2229 static int
2230 callvirt_to_call (int opcode)
2231 {
2232         switch (opcode) {
2233         case OP_CALL_MEMBASE:
2234                 return OP_CALL;
2235         case OP_VOIDCALL_MEMBASE:
2236                 return OP_VOIDCALL;
2237         case OP_FCALL_MEMBASE:
2238                 return OP_FCALL;
2239         case OP_RCALL_MEMBASE:
2240                 return OP_RCALL;
2241         case OP_VCALL_MEMBASE:
2242                 return OP_VCALL;
2243         case OP_LCALL_MEMBASE:
2244                 return OP_LCALL;
2245         default:
2246                 g_assert_not_reached ();
2247         }
2248
2249         return -1;
2250 }
2251
2252 static int
2253 callvirt_to_call_reg (int opcode)
2254 {
2255         switch (opcode) {
2256         case OP_CALL_MEMBASE:
2257                 return OP_CALL_REG;
2258         case OP_VOIDCALL_MEMBASE:
2259                 return OP_VOIDCALL_REG;
2260         case OP_FCALL_MEMBASE:
2261                 return OP_FCALL_REG;
2262         case OP_RCALL_MEMBASE:
2263                 return OP_RCALL_REG;
2264         case OP_VCALL_MEMBASE:
2265                 return OP_VCALL_REG;
2266         case OP_LCALL_MEMBASE:
2267                 return OP_LCALL_REG;
2268         default:
2269                 g_assert_not_reached ();
2270         }
2271
2272         return -1;
2273 }
2274
2275 /* Either METHOD or IMT_ARG needs to be set */
2276 static void
2277 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2278 {
2279         int method_reg;
2280
2281         if (COMPILE_LLVM (cfg)) {
2282                 if (imt_arg) {
2283                         method_reg = alloc_preg (cfg);
2284                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2285                 } else {
2286                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2287                         method_reg = ins->dreg;
2288                 }
2289
2290 #ifdef ENABLE_LLVM
2291                 call->imt_arg_reg = method_reg;
2292 #endif
2293                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2294                 return;
2295         }
2296
2297         if (imt_arg) {
2298                 method_reg = alloc_preg (cfg);
2299                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2300         } else {
2301                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2302                 method_reg = ins->dreg;
2303         }
2304
2305         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2306 }
2307
2308 static MonoJumpInfo *
2309 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2310 {
2311         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2312
2313         ji->ip.i = ip;
2314         ji->type = type;
2315         ji->data.target = target;
2316
2317         return ji;
2318 }
2319
2320 static int
2321 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2322 {
2323         if (cfg->gshared)
2324                 return mono_class_check_context_used (klass);
2325         else
2326                 return 0;
2327 }
2328
2329 static int
2330 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2331 {
2332         if (cfg->gshared)
2333                 return mono_method_check_context_used (method);
2334         else
2335                 return 0;
2336 }
2337
2338 /*
2339  * check_method_sharing:
2340  *
2341  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2342  */
2343 static void
2344 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2345 {
2346         gboolean pass_vtable = FALSE;
2347         gboolean pass_mrgctx = FALSE;
2348
2349         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2350                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2351                 gboolean sharable = FALSE;
2352
2353                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2354                         sharable = TRUE;
2355
2356                 /*
2357                  * Pass vtable iff target method might
2358                  * be shared, which means that sharing
2359                  * is enabled for its class and its
2360                  * context is sharable (and it's not a
2361                  * generic method).
2362                  */
2363                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2364                         pass_vtable = TRUE;
2365         }
2366
2367         if (mini_method_get_context (cmethod) &&
2368                 mini_method_get_context (cmethod)->method_inst) {
2369                 g_assert (!pass_vtable);
2370
2371                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2372                         pass_mrgctx = TRUE;
2373                 } else {
2374                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2375                                 pass_mrgctx = TRUE;
2376                 }
2377         }
2378
2379         if (out_pass_vtable)
2380                 *out_pass_vtable = pass_vtable;
2381         if (out_pass_mrgctx)
2382                 *out_pass_mrgctx = pass_mrgctx;
2383 }
2384
2385 inline static MonoCallInst *
2386 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2387                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2388 {
2389         MonoType *sig_ret;
2390         MonoCallInst *call;
2391 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2392         int i;
2393 #endif
2394
2395         if (cfg->llvm_only)
2396                 tail = FALSE;
2397
2398         if (tail) {
2399                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2400
2401                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2402         } else
2403                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2404
2405         call->args = args;
2406         call->signature = sig;
2407         call->rgctx_reg = rgctx;
2408         sig_ret = mini_get_underlying_type (sig->ret);
2409
2410         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2411
2412         if (tail) {
2413                 if (mini_type_is_vtype (sig_ret)) {
2414                         call->vret_var = cfg->vret_addr;
2415                         //g_assert_not_reached ();
2416                 }
2417         } else if (mini_type_is_vtype (sig_ret)) {
2418                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2419                 MonoInst *loada;
2420
2421                 temp->backend.is_pinvoke = sig->pinvoke;
2422
2423                 /*
2424                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2425                  * address of return value to increase optimization opportunities.
2426                  * Before vtype decomposition, the dreg of the call ins itself represents the
2427                  * fact the call modifies the return value. After decomposition, the call will
2428                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2429                  * will be transformed into an LDADDR.
2430                  */
2431                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2432                 loada->dreg = alloc_preg (cfg);
2433                 loada->inst_p0 = temp;
2434                 /* We reference the call too since call->dreg could change during optimization */
2435                 loada->inst_p1 = call;
2436                 MONO_ADD_INS (cfg->cbb, loada);
2437
2438                 call->inst.dreg = temp->dreg;
2439
2440                 call->vret_var = loada;
2441         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2442                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2443
2444 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2445         if (COMPILE_SOFT_FLOAT (cfg)) {
2446                 /*
2447                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2448                  * an icall, but that cannot be done during the call sequence since it would clobber
2449                  * the call registers + the stack. So we do it before emitting the call.
2450                  */
2451                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2452                         MonoType *t;
2453                         MonoInst *in = call->args [i];
2454
2455                         if (i >= sig->hasthis)
2456                                 t = sig->params [i - sig->hasthis];
2457                         else
2458                                 t = &mono_defaults.int_class->byval_arg;
2459                         t = mono_type_get_underlying_type (t);
2460
2461                         if (!t->byref && t->type == MONO_TYPE_R4) {
2462                                 MonoInst *iargs [1];
2463                                 MonoInst *conv;
2464
2465                                 iargs [0] = in;
2466                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2467
2468                                 /* The result will be in an int vreg */
2469                                 call->args [i] = conv;
2470                         }
2471                 }
2472         }
2473 #endif
2474
2475         call->need_unbox_trampoline = unbox_trampoline;
2476
2477 #ifdef ENABLE_LLVM
2478         if (COMPILE_LLVM (cfg))
2479                 mono_llvm_emit_call (cfg, call);
2480         else
2481                 mono_arch_emit_call (cfg, call);
2482 #else
2483         mono_arch_emit_call (cfg, call);
2484 #endif
2485
2486         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2487         cfg->flags |= MONO_CFG_HAS_CALLS;
2488
2489         return call;
2490 }
2491
2492 static void
2493 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2494 {
2495         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2496         cfg->uses_rgctx_reg = TRUE;
2497         call->rgctx_reg = TRUE;
2498 #ifdef ENABLE_LLVM
2499         call->rgctx_arg_reg = rgctx_reg;
2500 #endif
2501 }
2502
2503 inline static MonoInst*
2504 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2505 {
2506         MonoCallInst *call;
2507         MonoInst *ins;
2508         int rgctx_reg = -1;
2509         gboolean check_sp = FALSE;
2510
2511         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2512                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2513
2514                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2515                         check_sp = TRUE;
2516         }
2517
2518         if (rgctx_arg) {
2519                 rgctx_reg = mono_alloc_preg (cfg);
2520                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2521         }
2522
2523         if (check_sp) {
2524                 if (!cfg->stack_inbalance_var)
2525                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2526
2527                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2528                 ins->dreg = cfg->stack_inbalance_var->dreg;
2529                 MONO_ADD_INS (cfg->cbb, ins);
2530         }
2531
2532         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2533
2534         call->inst.sreg1 = addr->dreg;
2535
2536         if (imt_arg)
2537                 emit_imt_argument (cfg, call, NULL, imt_arg);
2538
2539         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2540
2541         if (check_sp) {
2542                 int sp_reg;
2543
2544                 sp_reg = mono_alloc_preg (cfg);
2545
2546                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2547                 ins->dreg = sp_reg;
2548                 MONO_ADD_INS (cfg->cbb, ins);
2549
2550                 /* Restore the stack so we don't crash when throwing the exception */
2551                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2552                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2553                 MONO_ADD_INS (cfg->cbb, ins);
2554
2555                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2556                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2557         }
2558
2559         if (rgctx_arg)
2560                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2561
2562         return (MonoInst*)call;
2563 }
2564
2565 static MonoInst*
2566 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2567
2568 static MonoInst*
2569 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2570
2571 static MonoInst*
2572 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2573                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2574 {
2575 #ifndef DISABLE_REMOTING
2576         gboolean might_be_remote = FALSE;
2577 #endif
2578         gboolean virtual_ = this_ins != NULL;
2579         gboolean enable_for_aot = TRUE;
2580         int context_used;
2581         MonoCallInst *call;
2582         MonoInst *call_target = NULL;
2583         int rgctx_reg = 0;
2584         gboolean need_unbox_trampoline;
2585
2586         if (!sig)
2587                 sig = mono_method_signature (method);
2588
2589         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2590                 g_assert_not_reached ();
2591
2592         if (rgctx_arg) {
2593                 rgctx_reg = mono_alloc_preg (cfg);
2594                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2595         }
2596
2597         if (method->string_ctor) {
2598                 /* Create the real signature */
2599                 /* FIXME: Cache these */
2600                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2601                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2602
2603                 sig = ctor_sig;
2604         }
2605
2606         context_used = mini_method_check_context_used (cfg, method);
2607
2608 #ifndef DISABLE_REMOTING
2609         might_be_remote = this_ins && sig->hasthis &&
2610                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2611                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2612
2613         if (might_be_remote && context_used) {
2614                 MonoInst *addr;
2615
2616                 g_assert (cfg->gshared);
2617
2618                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2619
2620                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2621         }
2622 #endif
2623
2624         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2625                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2626
2627         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2628
2629         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2630
2631 #ifndef DISABLE_REMOTING
2632         if (might_be_remote)
2633                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2634         else
2635 #endif
2636                 call->method = method;
2637         call->inst.flags |= MONO_INST_HAS_METHOD;
2638         call->inst.inst_left = this_ins;
2639         call->tail_call = tail;
2640
2641         if (virtual_) {
2642                 int vtable_reg, slot_reg, this_reg;
2643                 int offset;
2644
2645                 this_reg = this_ins->dreg;
2646
2647                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2648                         MonoInst *dummy_use;
2649
2650                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2651
2652                         /* Make a call to delegate->invoke_impl */
2653                         call->inst.inst_basereg = this_reg;
2654                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2655                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2656
2657                         /* We must emit a dummy use here because the delegate trampoline will
2658                         replace the 'this' argument with the delegate target making this activation
2659                         no longer a root for the delegate.
2660                         This is an issue for delegates that target collectible code such as dynamic
2661                         methods of GC'able assemblies.
2662
2663                         For a test case look into #667921.
2664
2665                         FIXME: a dummy use is not the best way to do it as the local register allocator
2666                         will put it on a caller save register and spil it around the call.
2667                         Ideally, we would either put it on a callee save register or only do the store part.
2668                          */
2669                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2670
2671                         return (MonoInst*)call;
2672                 }
2673
2674                 if ((!cfg->compile_aot || enable_for_aot) &&
2675                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2676                          (MONO_METHOD_IS_FINAL (method) &&
2677                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2678                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2679                         /*
2680                          * the method is not virtual, we just need to ensure this is not null
2681                          * and then we can call the method directly.
2682                          */
2683 #ifndef DISABLE_REMOTING
2684                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2685                                 /*
2686                                  * The check above ensures method is not gshared, this is needed since
2687                                  * gshared methods can't have wrappers.
2688                                  */
2689                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2690                         }
2691 #endif
2692
2693                         if (!method->string_ctor)
2694                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2695
2696                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2697                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2698                         /*
2699                          * the method is virtual, but we can statically dispatch since either
2700                          * it's class or the method itself are sealed.
2701                          * But first we need to ensure it's not a null reference.
2702                          */
2703                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2704
2705                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2706                 } else if (call_target) {
2707                         vtable_reg = alloc_preg (cfg);
2708                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2709
2710                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2711                         call->inst.sreg1 = call_target->dreg;
2712                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2713                 } else {
2714                         vtable_reg = alloc_preg (cfg);
2715                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2716                         if (mono_class_is_interface (method->klass)) {
2717                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2718                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2719                                 slot_reg = vtable_reg;
2720                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2721                         } else {
2722                                 slot_reg = vtable_reg;
2723                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2724                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2725                                 if (imt_arg) {
2726                                         g_assert (mono_method_signature (method)->generic_param_count);
2727                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2728                                 }
2729                         }
2730
2731                         call->inst.sreg1 = slot_reg;
2732                         call->inst.inst_offset = offset;
2733                         call->is_virtual = TRUE;
2734                 }
2735         }
2736
2737         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2738
2739         if (rgctx_arg)
2740                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2741
2742         return (MonoInst*)call;
2743 }
2744
2745 MonoInst*
2746 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2747 {
2748         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2749 }
2750
2751 MonoInst*
2752 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2753                                            MonoInst **args)
2754 {
2755         MonoCallInst *call;
2756
2757         g_assert (sig);
2758
2759         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2760         call->fptr = func;
2761
2762         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2763
2764         return (MonoInst*)call;
2765 }
2766
2767 MonoInst*
2768 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2769 {
2770         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2771
2772         g_assert (info);
2773
2774         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2775 }
2776
2777 /*
2778  * mono_emit_abs_call:
2779  *
2780  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2781  */
2782 inline static MonoInst*
2783 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2784                                         MonoMethodSignature *sig, MonoInst **args)
2785 {
2786         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2787         MonoInst *ins;
2788
2789         /*
2790          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2791          * handle it.
2792          */
2793         if (cfg->abs_patches == NULL)
2794                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2795         g_hash_table_insert (cfg->abs_patches, ji, ji);
2796         ins = mono_emit_native_call (cfg, ji, sig, args);
2797         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2798         return ins;
2799 }
2800
2801 static MonoMethodSignature*
2802 sig_to_rgctx_sig (MonoMethodSignature *sig)
2803 {
2804         // FIXME: memory allocation
2805         MonoMethodSignature *res;
2806         int i;
2807
2808         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2809         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2810         res->param_count = sig->param_count + 1;
2811         for (i = 0; i < sig->param_count; ++i)
2812                 res->params [i] = sig->params [i];
2813         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2814         return res;
2815 }
2816
2817 /* Make an indirect call to FSIG passing an additional argument */
2818 static MonoInst*
2819 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2820 {
2821         MonoMethodSignature *csig;
2822         MonoInst *args_buf [16];
2823         MonoInst **args;
2824         int i, pindex, tmp_reg;
2825
2826         /* Make a call with an rgctx/extra arg */
2827         if (fsig->param_count + 2 < 16)
2828                 args = args_buf;
2829         else
2830                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2831         pindex = 0;
2832         if (fsig->hasthis)
2833                 args [pindex ++] = orig_args [0];
2834         for (i = 0; i < fsig->param_count; ++i)
2835                 args [pindex ++] = orig_args [fsig->hasthis + i];
2836         tmp_reg = alloc_preg (cfg);
2837         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2838         csig = sig_to_rgctx_sig (fsig);
2839         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2840 }
2841
2842 /* Emit an indirect call to the function descriptor ADDR */
2843 static MonoInst*
2844 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2845 {
2846         int addr_reg, arg_reg;
2847         MonoInst *call_target;
2848
2849         g_assert (cfg->llvm_only);
2850
2851         /*
2852          * addr points to a <addr, arg> pair, load both of them, and
2853          * make a call to addr, passing arg as an extra arg.
2854          */
2855         addr_reg = alloc_preg (cfg);
2856         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2857         arg_reg = alloc_preg (cfg);
2858         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2859
2860         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2861 }
2862
2863 static gboolean
2864 direct_icalls_enabled (MonoCompile *cfg)
2865 {
2866         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2867 #ifdef TARGET_AMD64
2868         if (cfg->compile_llvm && !cfg->llvm_only)
2869                 return FALSE;
2870 #endif
2871         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2872                 return FALSE;
2873         return TRUE;
2874 }
2875
2876 MonoInst*
2877 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2878 {
2879         /*
2880          * Call the jit icall without a wrapper if possible.
2881          * The wrapper is needed for the following reasons:
2882          * - to handle exceptions thrown using mono_raise_exceptions () from the
2883          *   icall function. The EH code needs the lmf frame pushed by the
2884          *   wrapper to be able to unwind back to managed code.
2885          * - to be able to do stack walks for asynchronously suspended
2886          *   threads when debugging.
2887          */
2888         if (info->no_raise && direct_icalls_enabled (cfg)) {
2889                 char *name;
2890                 int costs;
2891
2892                 if (!info->wrapper_method) {
2893                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2894                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2895                         g_free (name);
2896                         mono_memory_barrier ();
2897                 }
2898
2899                 /*
2900                  * Inline the wrapper method, which is basically a call to the C icall, and
2901                  * an exception check.
2902                  */
2903                 costs = inline_method (cfg, info->wrapper_method, NULL,
2904                                                            args, NULL, il_offset, TRUE);
2905                 g_assert (costs > 0);
2906                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2907
2908                 return args [0];
2909         } else {
2910                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2911         }
2912 }
2913
2914 static MonoInst*
2915 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2916 {
2917         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2918                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2919                         int widen_op = -1;
2920
2921                         /*
2922                          * Native code might return non register sized integers
2923                          * without initializing the upper bits.
2924                          */
2925                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2926                         case OP_LOADI1_MEMBASE:
2927                                 widen_op = OP_ICONV_TO_I1;
2928                                 break;
2929                         case OP_LOADU1_MEMBASE:
2930                                 widen_op = OP_ICONV_TO_U1;
2931                                 break;
2932                         case OP_LOADI2_MEMBASE:
2933                                 widen_op = OP_ICONV_TO_I2;
2934                                 break;
2935                         case OP_LOADU2_MEMBASE:
2936                                 widen_op = OP_ICONV_TO_U2;
2937                                 break;
2938                         default:
2939                                 break;
2940                         }
2941
2942                         if (widen_op != -1) {
2943                                 int dreg = alloc_preg (cfg);
2944                                 MonoInst *widen;
2945
2946                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2947                                 widen->type = ins->type;
2948                                 ins = widen;
2949                         }
2950                 }
2951         }
2952
2953         return ins;
2954 }
2955
2956
2957 static void
2958 emit_method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
2959 {
2960         MonoInst *args [16];
2961
2962         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (method), method, MONO_RGCTX_INFO_METHOD);
2963         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cil_method), cil_method, MONO_RGCTX_INFO_METHOD);
2964
2965         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2966 }
2967
2968 static MonoMethod*
2969 get_memcpy_method (void)
2970 {
2971         static MonoMethod *memcpy_method = NULL;
2972         if (!memcpy_method) {
2973                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2974                 if (!memcpy_method)
2975                         g_error ("Old corlib found. Install a new one");
2976         }
2977         return memcpy_method;
2978 }
2979
2980 static void
2981 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2982 {
2983         MonoClassField *field;
2984         gpointer iter = NULL;
2985
2986         while ((field = mono_class_get_fields (klass, &iter))) {
2987                 int foffset;
2988
2989                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2990                         continue;
2991                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2992                 if (mini_type_is_reference (mono_field_get_type (field))) {
2993                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2994                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2995                 } else {
2996                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2997                         if (field_class->has_references)
2998                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2999                 }
3000         }
3001 }
3002
3003 static void
3004 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3005 {
3006         int card_table_shift_bits;
3007         gpointer card_table_mask;
3008         guint8 *card_table;
3009         MonoInst *dummy_use;
3010         int nursery_shift_bits;
3011         size_t nursery_size;
3012
3013         if (!cfg->gen_write_barriers)
3014                 return;
3015
3016         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3017
3018         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3019
3020         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3021                 MonoInst *wbarrier;
3022
3023                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3024                 wbarrier->sreg1 = ptr->dreg;
3025                 wbarrier->sreg2 = value->dreg;
3026                 MONO_ADD_INS (cfg->cbb, wbarrier);
3027         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3028                 int offset_reg = alloc_preg (cfg);
3029                 int card_reg;
3030                 MonoInst *ins;
3031
3032                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3033                 if (card_table_mask)
3034                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3035
3036                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3037                  * IMM's larger than 32bits.
3038                  */
3039                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3040                 card_reg = ins->dreg;
3041
3042                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3043                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3044         } else {
3045                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3046                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3047         }
3048
3049         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3050 }
3051
3052 static gboolean
3053 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3054 {
3055         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3056         unsigned need_wb = 0;
3057
3058         if (align == 0)
3059                 align = 4;
3060
3061         /*types with references can't have alignment smaller than sizeof(void*) */
3062         if (align < SIZEOF_VOID_P)
3063                 return FALSE;
3064
3065         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3066         if (size > 32 * SIZEOF_VOID_P)
3067                 return FALSE;
3068
3069         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3070
3071         /* We don't unroll more than 5 stores to avoid code bloat. */
3072         if (size > 5 * SIZEOF_VOID_P) {
3073                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3074                 size += (SIZEOF_VOID_P - 1);
3075                 size &= ~(SIZEOF_VOID_P - 1);
3076
3077                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3078                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3079                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3080                 return TRUE;
3081         }
3082
3083         destreg = iargs [0]->dreg;
3084         srcreg = iargs [1]->dreg;
3085         offset = 0;
3086
3087         dest_ptr_reg = alloc_preg (cfg);
3088         tmp_reg = alloc_preg (cfg);
3089
3090         /*tmp = dreg*/
3091         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3092
3093         while (size >= SIZEOF_VOID_P) {
3094                 MonoInst *load_inst;
3095                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3096                 load_inst->dreg = tmp_reg;
3097                 load_inst->inst_basereg = srcreg;
3098                 load_inst->inst_offset = offset;
3099                 MONO_ADD_INS (cfg->cbb, load_inst);
3100
3101                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3102
3103                 if (need_wb & 0x1)
3104                         emit_write_barrier (cfg, iargs [0], load_inst);
3105
3106                 offset += SIZEOF_VOID_P;
3107                 size -= SIZEOF_VOID_P;
3108                 need_wb >>= 1;
3109
3110                 /*tmp += sizeof (void*)*/
3111                 if (size >= SIZEOF_VOID_P) {
3112                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3113                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3114                 }
3115         }
3116
3117         /* Those cannot be references since size < sizeof (void*) */
3118         while (size >= 4) {
3119                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3120                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3121                 offset += 4;
3122                 size -= 4;
3123         }
3124
3125         while (size >= 2) {
3126                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3127                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3128                 offset += 2;
3129                 size -= 2;
3130         }
3131
3132         while (size >= 1) {
3133                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3134                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3135                 offset += 1;
3136                 size -= 1;
3137         }
3138
3139         return TRUE;
3140 }
3141
3142 /*
3143  * Emit code to copy a valuetype of type @klass whose address is stored in
3144  * @src->dreg to memory whose address is stored at @dest->dreg.
3145  */
3146 void
3147 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3148 {
3149         MonoInst *iargs [4];
3150         int n;
3151         guint32 align = 0;
3152         MonoMethod *memcpy_method;
3153         MonoInst *size_ins = NULL;
3154         MonoInst *memcpy_ins = NULL;
3155
3156         g_assert (klass);
3157         if (cfg->gshared)
3158                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3159
3160         /*
3161          * This check breaks with spilled vars... need to handle it during verification anyway.
3162          * g_assert (klass && klass == src->klass && klass == dest->klass);
3163          */
3164
3165         if (mini_is_gsharedvt_klass (klass)) {
3166                 g_assert (!native);
3167                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3168                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3169         }
3170
3171         if (native)
3172                 n = mono_class_native_size (klass, &align);
3173         else
3174                 n = mono_class_value_size (klass, &align);
3175
3176         /* if native is true there should be no references in the struct */
3177         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3178                 /* Avoid barriers when storing to the stack */
3179                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3180                           (dest->opcode == OP_LDADDR))) {
3181                         int context_used;
3182
3183                         iargs [0] = dest;
3184                         iargs [1] = src;
3185
3186                         context_used = mini_class_check_context_used (cfg, klass);
3187
3188                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3189                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3190                                 return;
3191                         } else if (context_used) {
3192                                 iargs [2] = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3193                         }  else {
3194                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3195                                 if (!cfg->compile_aot)
3196                                         mono_class_compute_gc_descriptor (klass);
3197                         }
3198
3199                         if (size_ins)
3200                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3201                         else
3202                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3203                         return;
3204                 }
3205         }
3206
3207         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3208                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3209                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3210         } else {
3211                 iargs [0] = dest;
3212                 iargs [1] = src;
3213                 if (size_ins)
3214                         iargs [2] = size_ins;
3215                 else
3216                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3217
3218                 memcpy_method = get_memcpy_method ();
3219                 if (memcpy_ins)
3220                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3221                 else
3222                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3223         }
3224 }
3225
3226 static MonoMethod*
3227 get_memset_method (void)
3228 {
3229         static MonoMethod *memset_method = NULL;
3230         if (!memset_method) {
3231                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3232                 if (!memset_method)
3233                         g_error ("Old corlib found. Install a new one");
3234         }
3235         return memset_method;
3236 }
3237
3238 void
3239 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3240 {
3241         MonoInst *iargs [3];
3242         int n;
3243         guint32 align;
3244         MonoMethod *memset_method;
3245         MonoInst *size_ins = NULL;
3246         MonoInst *bzero_ins = NULL;
3247         static MonoMethod *bzero_method;
3248
3249         /* FIXME: Optimize this for the case when dest is an LDADDR */
3250         mono_class_init (klass);
3251         if (mini_is_gsharedvt_klass (klass)) {
3252                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3253                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3254                 if (!bzero_method)
3255                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3256                 g_assert (bzero_method);
3257                 iargs [0] = dest;
3258                 iargs [1] = size_ins;
3259                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3260                 return;
3261         }
3262
3263         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3264
3265         n = mono_class_value_size (klass, &align);
3266
3267         if (n <= sizeof (gpointer) * 8) {
3268                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3269         }
3270         else {
3271                 memset_method = get_memset_method ();
3272                 iargs [0] = dest;
3273                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3274                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3275                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3276         }
3277 }
3278
3279 /*
3280  * emit_get_rgctx:
3281  *
3282  *   Emit IR to return either the this pointer for instance method,
3283  * or the mrgctx for static methods.
3284  */
3285 static MonoInst*
3286 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3287 {
3288         MonoInst *this_ins = NULL;
3289
3290         g_assert (cfg->gshared);
3291
3292         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3293                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3294                 !method->klass->valuetype)
3295                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
3296
3297         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3298                 MonoInst *mrgctx_loc, *mrgctx_var;
3299
3300                 g_assert (!this_ins);
3301                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3302
3303                 mrgctx_loc = mono_get_vtable_var (cfg);
3304                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3305
3306                 return mrgctx_var;
3307         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3308                 MonoInst *vtable_loc, *vtable_var;
3309
3310                 g_assert (!this_ins);
3311
3312                 vtable_loc = mono_get_vtable_var (cfg);
3313                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3314
3315                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3316                         MonoInst *mrgctx_var = vtable_var;
3317                         int vtable_reg;
3318
3319                         vtable_reg = alloc_preg (cfg);
3320                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3321                         vtable_var->type = STACK_PTR;
3322                 }
3323
3324                 return vtable_var;
3325         } else {
3326                 MonoInst *ins;
3327                 int vtable_reg;
3328
3329                 vtable_reg = alloc_preg (cfg);
3330                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3331                 return ins;
3332         }
3333 }
3334
3335 static MonoJumpInfoRgctxEntry *
3336 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3337 {
3338         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3339         res->method = method;
3340         res->in_mrgctx = in_mrgctx;
3341         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3342         res->data->type = patch_type;
3343         res->data->data.target = patch_data;
3344         res->info_type = info_type;
3345
3346         return res;
3347 }
3348
3349 static inline MonoInst*
3350 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3351 {
3352         MonoInst *args [16];
3353         MonoInst *call;
3354
3355         // FIXME: No fastpath since the slot is not a compile time constant
3356         args [0] = rgctx;
3357         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3358         if (entry->in_mrgctx)
3359                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3360         else
3361                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3362         return call;
3363 #if 0
3364         /*
3365          * FIXME: This can be called during decompose, which is a problem since it creates
3366          * new bblocks.
3367          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3368          */
3369         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3370         gboolean mrgctx;
3371         MonoBasicBlock *is_null_bb, *end_bb;
3372         MonoInst *res, *ins, *call;
3373         MonoInst *args[16];
3374
3375         slot = mini_get_rgctx_entry_slot (entry);
3376
3377         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3378         index = MONO_RGCTX_SLOT_INDEX (slot);
3379         if (mrgctx)
3380                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3381         for (depth = 0; ; ++depth) {
3382                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3383
3384                 if (index < size - 1)
3385                         break;
3386                 index -= size - 1;
3387         }
3388
3389         NEW_BBLOCK (cfg, end_bb);
3390         NEW_BBLOCK (cfg, is_null_bb);
3391
3392         if (mrgctx) {
3393                 rgctx_reg = rgctx->dreg;
3394         } else {
3395                 rgctx_reg = alloc_preg (cfg);
3396
3397                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3398                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3399                 NEW_BBLOCK (cfg, is_null_bb);
3400
3401                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3402                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3403         }
3404
3405         for (i = 0; i < depth; ++i) {
3406                 int array_reg = alloc_preg (cfg);
3407
3408                 /* load ptr to next array */
3409                 if (mrgctx && i == 0)
3410                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3411                 else
3412                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3413                 rgctx_reg = array_reg;
3414                 /* is the ptr null? */
3415                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3416                 /* if yes, jump to actual trampoline */
3417                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3418         }
3419
3420         /* fetch slot */
3421         val_reg = alloc_preg (cfg);
3422         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3423         /* is the slot null? */
3424         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3425         /* if yes, jump to actual trampoline */
3426         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3427
3428         /* Fastpath */
3429         res_reg = alloc_preg (cfg);
3430         MONO_INST_NEW (cfg, ins, OP_MOVE);
3431         ins->dreg = res_reg;
3432         ins->sreg1 = val_reg;
3433         MONO_ADD_INS (cfg->cbb, ins);
3434         res = ins;
3435         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3436
3437         /* Slowpath */
3438         MONO_START_BB (cfg, is_null_bb);
3439         args [0] = rgctx;
3440         EMIT_NEW_ICONST (cfg, args [1], index);
3441         if (mrgctx)
3442                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3443         else
3444                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3445         MONO_INST_NEW (cfg, ins, OP_MOVE);
3446         ins->dreg = res_reg;
3447         ins->sreg1 = call->dreg;
3448         MONO_ADD_INS (cfg->cbb, ins);
3449         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3450
3451         MONO_START_BB (cfg, end_bb);
3452
3453         return res;
3454 #endif
3455 }
3456
3457 /*
3458  * emit_rgctx_fetch:
3459  *
3460  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3461  * given by RGCTX.
3462  */
3463 static inline MonoInst*
3464 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3465 {
3466         if (cfg->llvm_only)
3467                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3468         else
3469                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3470 }
3471
3472 MonoInst*
3473 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3474                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3475 {
3476         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);
3477         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3478
3479         return emit_rgctx_fetch (cfg, rgctx, entry);
3480 }
3481
3482 static MonoInst*
3483 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3484                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3485 {
3486         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);
3487         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3488
3489         return emit_rgctx_fetch (cfg, rgctx, entry);
3490 }
3491
3492 static MonoInst*
3493 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3494                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3495 {
3496         MonoJumpInfoGSharedVtCall *call_info;
3497         MonoJumpInfoRgctxEntry *entry;
3498         MonoInst *rgctx;
3499
3500         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3501         call_info->sig = sig;
3502         call_info->method = cmethod;
3503
3504         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);
3505         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3506
3507         return emit_rgctx_fetch (cfg, rgctx, entry);
3508 }
3509
3510 /*
3511  * emit_get_rgctx_virt_method:
3512  *
3513  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3514  */
3515 static MonoInst*
3516 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3517                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3518 {
3519         MonoJumpInfoVirtMethod *info;
3520         MonoJumpInfoRgctxEntry *entry;
3521         MonoInst *rgctx;
3522
3523         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3524         info->klass = klass;
3525         info->method = virt_method;
3526
3527         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);
3528         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3529
3530         return emit_rgctx_fetch (cfg, rgctx, entry);
3531 }
3532
3533 static MonoInst*
3534 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3535                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3536 {
3537         MonoJumpInfoRgctxEntry *entry;
3538         MonoInst *rgctx;
3539
3540         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);
3541         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3542
3543         return emit_rgctx_fetch (cfg, rgctx, entry);
3544 }
3545
3546 /*
3547  * emit_get_rgctx_method:
3548  *
3549  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3550  * normal constants, else emit a load from the rgctx.
3551  */
3552 static MonoInst*
3553 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3554                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3555 {
3556         if (!context_used) {
3557                 MonoInst *ins;
3558
3559                 switch (rgctx_type) {
3560                 case MONO_RGCTX_INFO_METHOD:
3561                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3562                         return ins;
3563                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3564                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3565                         return ins;
3566                 default:
3567                         g_assert_not_reached ();
3568                 }
3569         } else {
3570                 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);
3571                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3572
3573                 return emit_rgctx_fetch (cfg, rgctx, entry);
3574         }
3575 }
3576
3577 static MonoInst*
3578 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3579                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3580 {
3581         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);
3582         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3583
3584         return emit_rgctx_fetch (cfg, rgctx, entry);
3585 }
3586
3587 static int
3588 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3589 {
3590         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3591         MonoRuntimeGenericContextInfoTemplate *template_;
3592         int i, idx;
3593
3594         g_assert (info);
3595
3596         for (i = 0; i < info->num_entries; ++i) {
3597                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3598
3599                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3600                         return i;
3601         }
3602
3603         if (info->num_entries == info->count_entries) {
3604                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3605                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3606
3607                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3608
3609                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3610                 info->entries = new_entries;
3611                 info->count_entries = new_count_entries;
3612         }
3613
3614         idx = info->num_entries;
3615         template_ = &info->entries [idx];
3616         template_->info_type = rgctx_type;
3617         template_->data = data;
3618
3619         info->num_entries ++;
3620
3621         return idx;
3622 }
3623
3624 /*
3625  * emit_get_gsharedvt_info:
3626  *
3627  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3628  */
3629 static MonoInst*
3630 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3631 {
3632         MonoInst *ins;
3633         int idx, dreg;
3634
3635         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3636         /* Load info->entries [idx] */
3637         dreg = alloc_preg (cfg);
3638         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3639
3640         return ins;
3641 }
3642
3643 static MonoInst*
3644 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3645 {
3646         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3647 }
3648
3649 /*
3650  * On return the caller must check @klass for load errors.
3651  */
3652 static void
3653 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3654 {
3655         MonoInst *vtable_arg;
3656         int context_used;
3657
3658         context_used = mini_class_check_context_used (cfg, klass);
3659
3660         if (context_used) {
3661                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3662                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3663         } else {
3664                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3665
3666                 if (!vtable)
3667                         return;
3668                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3669         }
3670
3671         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3672                 MonoInst *ins;
3673
3674                 /*
3675                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3676                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3677                  */
3678                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3679                 ins->sreg1 = vtable_arg->dreg;
3680                 MONO_ADD_INS (cfg->cbb, ins);
3681         } else {
3682                 int inited_reg;
3683                 MonoBasicBlock *inited_bb;
3684                 MonoInst *args [16];
3685
3686                 inited_reg = alloc_ireg (cfg);
3687
3688                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3689
3690                 NEW_BBLOCK (cfg, inited_bb);
3691
3692                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3693                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3694
3695                 args [0] = vtable_arg;
3696                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3697
3698                 MONO_START_BB (cfg, inited_bb);
3699         }
3700 }
3701
3702 static void
3703 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3704 {
3705         MonoInst *ins;
3706
3707         if (cfg->gen_seq_points && cfg->method == method) {
3708                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3709                 if (nonempty_stack)
3710                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3711                 MONO_ADD_INS (cfg->cbb, ins);
3712         }
3713 }
3714
3715 void
3716 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3717 {
3718         if (mini_get_debug_options ()->better_cast_details) {
3719                 int vtable_reg = alloc_preg (cfg);
3720                 int klass_reg = alloc_preg (cfg);
3721                 MonoBasicBlock *is_null_bb = NULL;
3722                 MonoInst *tls_get;
3723                 int to_klass_reg, context_used;
3724
3725                 if (null_check) {
3726                         NEW_BBLOCK (cfg, is_null_bb);
3727
3728                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3729                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3730                 }
3731
3732                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3733                 if (!tls_get) {
3734                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3735                         exit (1);
3736                 }
3737
3738                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3739                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3740
3741                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3742
3743                 context_used = mini_class_check_context_used (cfg, klass);
3744                 if (context_used) {
3745                         MonoInst *class_ins;
3746
3747                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3748                         to_klass_reg = class_ins->dreg;
3749                 } else {
3750                         to_klass_reg = alloc_preg (cfg);
3751                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3752                 }
3753                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3754
3755                 if (null_check)
3756                         MONO_START_BB (cfg, is_null_bb);
3757         }
3758 }
3759
3760 void
3761 mini_reset_cast_details (MonoCompile *cfg)
3762 {
3763         /* Reset the variables holding the cast details */
3764         if (mini_get_debug_options ()->better_cast_details) {
3765                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3766                 /* It is enough to reset the from field */
3767                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3768         }
3769 }
3770
3771 /*
3772  * On return the caller must check @array_class for load errors
3773  */
3774 static void
3775 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3776 {
3777         int vtable_reg = alloc_preg (cfg);
3778         int context_used;
3779
3780         context_used = mini_class_check_context_used (cfg, array_class);
3781
3782         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3783
3784         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3785
3786         if (cfg->opt & MONO_OPT_SHARED) {
3787                 int class_reg = alloc_preg (cfg);
3788                 MonoInst *ins;
3789
3790                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3791                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3792                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3793         } else if (context_used) {
3794                 MonoInst *vtable_ins;
3795
3796                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3797                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3798         } else {
3799                 if (cfg->compile_aot) {
3800                         int vt_reg;
3801                         MonoVTable *vtable;
3802
3803                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3804                                 return;
3805                         vt_reg = alloc_preg (cfg);
3806                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3807                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3808                 } else {
3809                         MonoVTable *vtable;
3810                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3811                                 return;
3812                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3813                 }
3814         }
3815
3816         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3817
3818         mini_reset_cast_details (cfg);
3819 }
3820
3821 /**
3822  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3823  * generic code is generated.
3824  */
3825 static MonoInst*
3826 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3827 {
3828         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3829
3830         if (context_used) {
3831                 MonoInst *rgctx, *addr;
3832
3833                 /* FIXME: What if the class is shared?  We might not
3834                    have to get the address of the method from the
3835                    RGCTX. */
3836                 addr = emit_get_rgctx_method (cfg, context_used, method,
3837                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3838                 if (cfg->llvm_only) {
3839                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3840                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3841                 } else {
3842                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3843
3844                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3845                 }
3846         } else {
3847                 gboolean pass_vtable, pass_mrgctx;
3848                 MonoInst *rgctx_arg = NULL;
3849
3850                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3851                 g_assert (!pass_mrgctx);
3852
3853                 if (pass_vtable) {
3854                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3855
3856                         g_assert (vtable);
3857                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3858                 }
3859
3860                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3861         }
3862 }
3863
3864 static MonoInst*
3865 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3866 {
3867         MonoInst *add;
3868         int obj_reg;
3869         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3870         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3871         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3872         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3873
3874         obj_reg = sp [0]->dreg;
3875         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3876         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3877
3878         /* FIXME: generics */
3879         g_assert (klass->rank == 0);
3880
3881         // Check rank == 0
3882         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3883         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3884
3885         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3886         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3887
3888         if (context_used) {
3889                 MonoInst *element_class;
3890
3891                 /* This assertion is from the unboxcast insn */
3892                 g_assert (klass->rank == 0);
3893
3894                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3895                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3896
3897                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3898                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3899         } else {
3900                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3901                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3902                 mini_reset_cast_details (cfg);
3903         }
3904
3905         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3906         MONO_ADD_INS (cfg->cbb, add);
3907         add->type = STACK_MP;
3908         add->klass = klass;
3909
3910         return add;
3911 }
3912
3913 static MonoInst*
3914 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3915 {
3916         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3917         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3918         MonoInst *ins;
3919         int dreg, addr_reg;
3920
3921         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3922
3923         /* obj */
3924         args [0] = obj;
3925
3926         /* klass */
3927         args [1] = klass_inst;
3928
3929         /* CASTCLASS */
3930         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3931
3932         NEW_BBLOCK (cfg, is_ref_bb);
3933         NEW_BBLOCK (cfg, is_nullable_bb);
3934         NEW_BBLOCK (cfg, end_bb);
3935         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3936         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3937         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3938
3939         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3940         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3941
3942         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3943         addr_reg = alloc_dreg (cfg, STACK_MP);
3944
3945         /* Non-ref case */
3946         /* UNBOX */
3947         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3948         MONO_ADD_INS (cfg->cbb, addr);
3949
3950         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3951
3952         /* Ref case */
3953         MONO_START_BB (cfg, is_ref_bb);
3954
3955         /* Save the ref to a temporary */
3956         dreg = alloc_ireg (cfg);
3957         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3958         addr->dreg = addr_reg;
3959         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3960         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3961
3962         /* Nullable case */
3963         MONO_START_BB (cfg, is_nullable_bb);
3964
3965         {
3966                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3967                 MonoInst *unbox_call;
3968                 MonoMethodSignature *unbox_sig;
3969
3970                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3971                 unbox_sig->ret = &klass->byval_arg;
3972                 unbox_sig->param_count = 1;
3973                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3974
3975                 if (cfg->llvm_only)
3976                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3977                 else
3978                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3979
3980                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3981                 addr->dreg = addr_reg;
3982         }
3983
3984         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3985
3986         /* End */
3987         MONO_START_BB (cfg, end_bb);
3988
3989         /* LDOBJ */
3990         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3991
3992         return ins;
3993 }
3994
3995 /*
3996  * Returns NULL and set the cfg exception on error.
3997  */
3998 static MonoInst*
3999 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4000 {
4001         MonoInst *iargs [2];
4002         void *alloc_ftn;
4003
4004         if (context_used) {
4005                 MonoInst *data;
4006                 MonoRgctxInfoType rgctx_info;
4007                 MonoInst *iargs [2];
4008                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4009
4010                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4011
4012                 if (cfg->opt & MONO_OPT_SHARED)
4013                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4014                 else
4015                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4016                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4017
4018                 if (cfg->opt & MONO_OPT_SHARED) {
4019                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4020                         iargs [1] = data;
4021                         alloc_ftn = ves_icall_object_new;
4022                 } else {
4023                         iargs [0] = data;
4024                         alloc_ftn = ves_icall_object_new_specific;
4025                 }
4026
4027                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4028                         if (known_instance_size) {
4029                                 int size = mono_class_instance_size (klass);
4030                                 if (size < sizeof (MonoObject))
4031                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4032
4033                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4034                         }
4035                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4036                 }
4037
4038                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4039         }
4040
4041         if (cfg->opt & MONO_OPT_SHARED) {
4042                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4043                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4044
4045                 alloc_ftn = ves_icall_object_new;
4046         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
4047                 /* This happens often in argument checking code, eg. throw new FooException... */
4048                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4049                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4050                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4051         } else {
4052                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4053                 MonoMethod *managed_alloc = NULL;
4054                 gboolean pass_lw;
4055
4056                 if (!vtable) {
4057                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4058                         cfg->exception_ptr = klass;
4059                         return NULL;
4060                 }
4061
4062                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4063
4064                 if (managed_alloc) {
4065                         int size = mono_class_instance_size (klass);
4066                         if (size < sizeof (MonoObject))
4067                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4068
4069                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4070                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4071                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4072                 }
4073                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4074                 if (pass_lw) {
4075                         guint32 lw = vtable->klass->instance_size;
4076                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4077                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4078                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4079                 }
4080                 else {
4081                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4082                 }
4083         }
4084
4085         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4086 }
4087
4088 /*
4089  * Returns NULL and set the cfg exception on error.
4090  */
4091 static MonoInst*
4092 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4093 {
4094         MonoInst *alloc, *ins;
4095
4096         if (mono_class_is_nullable (klass)) {
4097                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4098
4099                 if (context_used) {
4100                         if (cfg->llvm_only && cfg->gsharedvt) {
4101                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4102                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4103                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4104                         } else {
4105                                 /* FIXME: What if the class is shared?  We might not
4106                                    have to get the method address from the RGCTX. */
4107                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4108                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4109                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
4110
4111                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4112                         }
4113                 } else {
4114                         gboolean pass_vtable, pass_mrgctx;
4115                         MonoInst *rgctx_arg = NULL;
4116
4117                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4118                         g_assert (!pass_mrgctx);
4119
4120                         if (pass_vtable) {
4121                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4122
4123                                 g_assert (vtable);
4124                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4125                         }
4126
4127                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4128                 }
4129         }
4130
4131         if (mini_is_gsharedvt_klass (klass)) {
4132                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4133                 MonoInst *res, *is_ref, *src_var, *addr;
4134                 int dreg;
4135
4136                 dreg = alloc_ireg (cfg);
4137
4138                 NEW_BBLOCK (cfg, is_ref_bb);
4139                 NEW_BBLOCK (cfg, is_nullable_bb);
4140                 NEW_BBLOCK (cfg, end_bb);
4141                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4142                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4143                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4144
4145                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4146                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4147
4148                 /* Non-ref case */
4149                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4150                 if (!alloc)
4151                         return NULL;
4152                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4153                 ins->opcode = OP_STOREV_MEMBASE;
4154
4155                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4156                 res->type = STACK_OBJ;
4157                 res->klass = klass;
4158                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4159
4160                 /* Ref case */
4161                 MONO_START_BB (cfg, is_ref_bb);
4162
4163                 /* val is a vtype, so has to load the value manually */
4164                 src_var = get_vreg_to_inst (cfg, val->dreg);
4165                 if (!src_var)
4166                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4167                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4168                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4169                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4170
4171                 /* Nullable case */
4172                 MONO_START_BB (cfg, is_nullable_bb);
4173
4174                 {
4175                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4176                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4177                         MonoInst *box_call;
4178                         MonoMethodSignature *box_sig;
4179
4180                         /*
4181                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4182                          * construct that method at JIT time, so have to do things by hand.
4183                          */
4184                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4185                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4186                         box_sig->param_count = 1;
4187                         box_sig->params [0] = &klass->byval_arg;
4188
4189                         if (cfg->llvm_only)
4190                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4191                         else
4192                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4193                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4194                         res->type = STACK_OBJ;
4195                         res->klass = klass;
4196                 }
4197
4198                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4199
4200                 MONO_START_BB (cfg, end_bb);
4201
4202                 return res;
4203         } else {
4204                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4205                 if (!alloc)
4206                         return NULL;
4207
4208                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4209                 return alloc;
4210         }
4211 }
4212
4213 static GHashTable* direct_icall_type_hash;
4214
4215 static gboolean
4216 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4217 {
4218         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4219         if (!direct_icalls_enabled (cfg))
4220                 return FALSE;
4221
4222         /*
4223          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4224          * Whitelist a few icalls for now.
4225          */
4226         if (!direct_icall_type_hash) {
4227                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4228
4229                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4230                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4231                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4232                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4233                 mono_memory_barrier ();
4234                 direct_icall_type_hash = h;
4235         }
4236
4237         if (cmethod->klass == mono_defaults.math_class)
4238                 return TRUE;
4239         /* No locking needed */
4240         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4241                 return TRUE;
4242         return FALSE;
4243 }
4244
4245 static gboolean
4246 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
4247 {
4248         if (cmethod->klass == mono_defaults.systemtype_class) {
4249                 if (!strcmp (cmethod->name, "GetType"))
4250                         return TRUE;
4251         }
4252         return FALSE;
4253 }
4254
4255 static G_GNUC_UNUSED MonoInst*
4256 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4257 {
4258         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4259         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4260         gboolean is_i4;
4261
4262         switch (enum_type->type) {
4263         case MONO_TYPE_I8:
4264         case MONO_TYPE_U8:
4265 #if SIZEOF_REGISTER == 8
4266         case MONO_TYPE_I:
4267         case MONO_TYPE_U:
4268 #endif
4269                 is_i4 = FALSE;
4270                 break;
4271         default:
4272                 is_i4 = TRUE;
4273                 break;
4274         }
4275
4276         {
4277                 MonoInst *load, *and_, *cmp, *ceq;
4278                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4279                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4280                 int dest_reg = alloc_ireg (cfg);
4281
4282                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4283                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4284                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4285                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4286
4287                 ceq->type = STACK_I4;
4288
4289                 if (!is_i4) {
4290                         load = mono_decompose_opcode (cfg, load);
4291                         and_ = mono_decompose_opcode (cfg, and_);
4292                         cmp = mono_decompose_opcode (cfg, cmp);
4293                         ceq = mono_decompose_opcode (cfg, ceq);
4294                 }
4295
4296                 return ceq;
4297         }
4298 }
4299
4300 /*
4301  * Returns NULL and set the cfg exception on error.
4302  */
4303 static G_GNUC_UNUSED MonoInst*
4304 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
4305 {
4306         MonoInst *ptr;
4307         int dreg;
4308         gpointer trampoline;
4309         MonoInst *obj, *method_ins, *tramp_ins;
4310         MonoDomain *domain;
4311         guint8 **code_slot;
4312
4313         if (virtual_ && !cfg->llvm_only) {
4314                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4315                 g_assert (invoke);
4316
4317                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4318                         return NULL;
4319         }
4320
4321         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
4322         if (!obj)
4323                 return NULL;
4324
4325         /* Inline the contents of mono_delegate_ctor */
4326
4327         /* Set target field */
4328         /* Optimize away setting of NULL target */
4329         if (!MONO_INS_IS_PCONST_NULL (target)) {
4330                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4331                 if (cfg->gen_write_barriers) {
4332                         dreg = alloc_preg (cfg);
4333                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4334                         emit_write_barrier (cfg, ptr, target);
4335                 }
4336         }
4337
4338         /* Set method field */
4339         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4340         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4341
4342         /*
4343          * To avoid looking up the compiled code belonging to the target method
4344          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4345          * store it, and we fill it after the method has been compiled.
4346          */
4347         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4348                 MonoInst *code_slot_ins;
4349
4350                 if (context_used) {
4351                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4352                 } else {
4353                         domain = mono_domain_get ();
4354                         mono_domain_lock (domain);
4355                         if (!domain_jit_info (domain)->method_code_hash)
4356                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4357                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4358                         if (!code_slot) {
4359                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4360                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4361                         }
4362                         mono_domain_unlock (domain);
4363
4364                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4365                 }
4366                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4367         }
4368
4369         if (cfg->llvm_only) {
4370                 MonoInst *args [16];
4371
4372                 if (virtual_) {
4373                         args [0] = obj;
4374                         args [1] = target;
4375                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4376                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4377                 } else {
4378                         args [0] = obj;
4379                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4380                 }
4381
4382                 return obj;
4383         }
4384
4385         if (cfg->compile_aot) {
4386                 MonoDelegateClassMethodPair *del_tramp;
4387
4388                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4389                 del_tramp->klass = klass;
4390                 del_tramp->method = context_used ? NULL : method;
4391                 del_tramp->is_virtual = virtual_;
4392                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4393         } else {
4394                 if (virtual_)
4395                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4396                 else
4397                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4398                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4399         }
4400
4401         /* Set invoke_impl field */
4402         if (virtual_) {
4403                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4404         } else {
4405                 dreg = alloc_preg (cfg);
4406                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4407                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4408
4409                 dreg = alloc_preg (cfg);
4410                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4411                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4412         }
4413
4414         dreg = alloc_preg (cfg);
4415         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4416         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4417
4418         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4419
4420         return obj;
4421 }
4422
4423 static MonoInst*
4424 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4425 {
4426         MonoJitICallInfo *info;
4427
4428         /* Need to register the icall so it gets an icall wrapper */
4429         info = mono_get_array_new_va_icall (rank);
4430
4431         cfg->flags |= MONO_CFG_HAS_VARARGS;
4432
4433         /* mono_array_new_va () needs a vararg calling convention */
4434         cfg->exception_message = g_strdup ("array-new");
4435         cfg->disable_llvm = TRUE;
4436
4437         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4438         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4439 }
4440
4441 /*
4442  * handle_constrained_gsharedvt_call:
4443  *
4444  *   Handle constrained calls where the receiver is a gsharedvt type.
4445  * Return the instruction representing the call. Set the cfg exception on failure.
4446  */
4447 static MonoInst*
4448 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4449                                                                    gboolean *ref_emit_widen)
4450 {
4451         MonoInst *ins = NULL;
4452         gboolean emit_widen = *ref_emit_widen;
4453
4454         /*
4455          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4456          * 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
4457          * pack the arguments into an array, and do the rest of the work in in an icall.
4458          */
4459         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4460                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (fsig->ret)) &&
4461                 (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]))))) {
4462                 MonoInst *args [16];
4463
4464                 /*
4465                  * This case handles calls to
4466                  * - object:ToString()/Equals()/GetHashCode(),
4467                  * - System.IComparable<T>:CompareTo()
4468                  * - System.IEquatable<T>:Equals ()
4469                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4470                  */
4471
4472                 args [0] = sp [0];
4473                 if (mono_method_check_context_used (cmethod))
4474                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4475                 else
4476                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4477                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4478
4479                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4480                 if (fsig->hasthis && fsig->param_count) {
4481                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4482                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4483                         ins->dreg = alloc_preg (cfg);
4484                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4485                         MONO_ADD_INS (cfg->cbb, ins);
4486                         args [4] = ins;
4487
4488                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4489                                 int addr_reg, deref_arg_reg;
4490
4491                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4492                                 deref_arg_reg = alloc_preg (cfg);
4493                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4494                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4495
4496                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4497                                 addr_reg = ins->dreg;
4498                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4499                         } else {
4500                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4501                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4502                         }
4503                 } else {
4504                         EMIT_NEW_ICONST (cfg, args [3], 0);
4505                         EMIT_NEW_ICONST (cfg, args [4], 0);
4506                 }
4507                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4508                 emit_widen = FALSE;
4509
4510                 if (mini_is_gsharedvt_type (fsig->ret)) {
4511                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4512                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
4513                         MonoInst *add;
4514
4515                         /* Unbox */
4516                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4517                         MONO_ADD_INS (cfg->cbb, add);
4518                         /* Load value */
4519                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4520                         MONO_ADD_INS (cfg->cbb, ins);
4521                         /* ins represents the call result */
4522                 }
4523         } else {
4524                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4525         }
4526
4527         *ref_emit_widen = emit_widen;
4528
4529         return ins;
4530
4531  exception_exit:
4532         return NULL;
4533 }
4534
4535 static void
4536 mono_emit_load_got_addr (MonoCompile *cfg)
4537 {
4538         MonoInst *getaddr, *dummy_use;
4539
4540         if (!cfg->got_var || cfg->got_var_allocated)
4541                 return;
4542
4543         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4544         getaddr->cil_code = cfg->header->code;
4545         getaddr->dreg = cfg->got_var->dreg;
4546
4547         /* Add it to the start of the first bblock */
4548         if (cfg->bb_entry->code) {
4549                 getaddr->next = cfg->bb_entry->code;
4550                 cfg->bb_entry->code = getaddr;
4551         }
4552         else
4553                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4554
4555         cfg->got_var_allocated = TRUE;
4556
4557         /*
4558          * Add a dummy use to keep the got_var alive, since real uses might
4559          * only be generated by the back ends.
4560          * Add it to end_bblock, so the variable's lifetime covers the whole
4561          * method.
4562          * It would be better to make the usage of the got var explicit in all
4563          * cases when the backend needs it (i.e. calls, throw etc.), so this
4564          * wouldn't be needed.
4565          */
4566         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4567         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4568 }
4569
4570 static int inline_limit;
4571 static gboolean inline_limit_inited;
4572
4573 static gboolean
4574 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4575 {
4576         MonoMethodHeaderSummary header;
4577         MonoVTable *vtable;
4578 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4579         MonoMethodSignature *sig = mono_method_signature (method);
4580         int i;
4581 #endif
4582
4583         if (cfg->disable_inline)
4584                 return FALSE;
4585         if (cfg->gsharedvt)
4586                 return FALSE;
4587
4588         if (cfg->inline_depth > 10)
4589                 return FALSE;
4590
4591         if (!mono_method_get_header_summary (method, &header))
4592                 return FALSE;
4593
4594         /*runtime, icall and pinvoke are checked by summary call*/
4595         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4596             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4597             (mono_class_is_marshalbyref (method->klass)) ||
4598             header.has_clauses)
4599                 return FALSE;
4600
4601         /* also consider num_locals? */
4602         /* Do the size check early to avoid creating vtables */
4603         if (!inline_limit_inited) {
4604                 if (g_getenv ("MONO_INLINELIMIT"))
4605                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
4606                 else
4607                         inline_limit = INLINE_LENGTH_LIMIT;
4608                 inline_limit_inited = TRUE;
4609         }
4610         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4611                 return FALSE;
4612
4613         /*
4614          * if we can initialize the class of the method right away, we do,
4615          * otherwise we don't allow inlining if the class needs initialization,
4616          * since it would mean inserting a call to mono_runtime_class_init()
4617          * inside the inlined code
4618          */
4619         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4620                 return FALSE;
4621
4622         if (!(cfg->opt & MONO_OPT_SHARED)) {
4623                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4624                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4625                         if (method->klass->has_cctor) {
4626                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4627                                 if (!vtable)
4628                                         return FALSE;
4629                                 if (!cfg->compile_aot) {
4630                                         MonoError error;
4631                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4632                                                 mono_error_cleanup (&error);
4633                                                 return FALSE;
4634                                         }
4635                                 }
4636                         }
4637                 } else if (mono_class_is_before_field_init (method->klass)) {
4638                         if (cfg->run_cctors && method->klass->has_cctor) {
4639                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4640                                 if (!method->klass->runtime_info)
4641                                         /* No vtable created yet */
4642                                         return FALSE;
4643                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4644                                 if (!vtable)
4645                                         return FALSE;
4646                                 /* This makes so that inline cannot trigger */
4647                                 /* .cctors: too many apps depend on them */
4648                                 /* running with a specific order... */
4649                                 if (! vtable->initialized)
4650                                         return FALSE;
4651                                 MonoError error;
4652                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4653                                         mono_error_cleanup (&error);
4654                                         return FALSE;
4655                                 }
4656                         }
4657                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4658                         if (!method->klass->runtime_info)
4659                                 /* No vtable created yet */
4660                                 return FALSE;
4661                         vtable = mono_class_vtable (cfg->domain, method->klass);
4662                         if (!vtable)
4663                                 return FALSE;
4664                         if (!vtable->initialized)
4665                                 return FALSE;
4666                 }
4667         } else {
4668                 /*
4669                  * If we're compiling for shared code
4670                  * the cctor will need to be run at aot method load time, for example,
4671                  * or at the end of the compilation of the inlining method.
4672                  */
4673                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4674                         return FALSE;
4675         }
4676
4677 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4678         if (mono_arch_is_soft_float ()) {
4679                 /* FIXME: */
4680                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4681                         return FALSE;
4682                 for (i = 0; i < sig->param_count; ++i)
4683                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4684                                 return FALSE;
4685         }
4686 #endif
4687
4688         if (g_list_find (cfg->dont_inline, method))
4689                 return FALSE;
4690
4691         return TRUE;
4692 }
4693
4694 static gboolean
4695 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4696 {
4697         if (!cfg->compile_aot) {
4698                 g_assert (vtable);
4699                 if (vtable->initialized)
4700                         return FALSE;
4701         }
4702
4703         if (mono_class_is_before_field_init (klass)) {
4704                 if (cfg->method == method)
4705                         return FALSE;
4706         }
4707
4708         if (!mono_class_needs_cctor_run (klass, method))
4709                 return FALSE;
4710
4711         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4712                 /* The initialization is already done before the method is called */
4713                 return FALSE;
4714
4715         return TRUE;
4716 }
4717
4718 MonoInst*
4719 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4720 {
4721         MonoInst *ins;
4722         guint32 size;
4723         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4724         int context_used;
4725
4726         if (mini_is_gsharedvt_variable_klass (klass)) {
4727                 size = -1;
4728         } else {
4729                 mono_class_init (klass);
4730                 size = mono_class_array_element_size (klass);
4731         }
4732
4733         mult_reg = alloc_preg (cfg);
4734         array_reg = arr->dreg;
4735         index_reg = index->dreg;
4736
4737 #if SIZEOF_REGISTER == 8
4738         /* The array reg is 64 bits but the index reg is only 32 */
4739         if (COMPILE_LLVM (cfg)) {
4740                 /* Not needed */
4741                 index2_reg = index_reg;
4742         } else {
4743                 index2_reg = alloc_preg (cfg);
4744                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4745         }
4746 #else
4747         if (index->type == STACK_I8) {
4748                 index2_reg = alloc_preg (cfg);
4749                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4750         } else {
4751                 index2_reg = index_reg;
4752         }
4753 #endif
4754
4755         if (bcheck)
4756                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4757
4758 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4759         if (size == 1 || size == 2 || size == 4 || size == 8) {
4760                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4761
4762                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4763                 ins->klass = mono_class_get_element_class (klass);
4764                 ins->type = STACK_MP;
4765
4766                 return ins;
4767         }
4768 #endif
4769
4770         add_reg = alloc_ireg_mp (cfg);
4771
4772         if (size == -1) {
4773                 MonoInst *rgctx_ins;
4774
4775                 /* gsharedvt */
4776                 g_assert (cfg->gshared);
4777                 context_used = mini_class_check_context_used (cfg, klass);
4778                 g_assert (context_used);
4779                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4780                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4781         } else {
4782                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4783         }
4784         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4785         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4786         ins->klass = mono_class_get_element_class (klass);
4787         ins->type = STACK_MP;
4788         MONO_ADD_INS (cfg->cbb, ins);
4789
4790         return ins;
4791 }
4792
4793 static MonoInst*
4794 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4795 {
4796         int bounds_reg = alloc_preg (cfg);
4797         int add_reg = alloc_ireg_mp (cfg);
4798         int mult_reg = alloc_preg (cfg);
4799         int mult2_reg = alloc_preg (cfg);
4800         int low1_reg = alloc_preg (cfg);
4801         int low2_reg = alloc_preg (cfg);
4802         int high1_reg = alloc_preg (cfg);
4803         int high2_reg = alloc_preg (cfg);
4804         int realidx1_reg = alloc_preg (cfg);
4805         int realidx2_reg = alloc_preg (cfg);
4806         int sum_reg = alloc_preg (cfg);
4807         int index1, index2, tmpreg;
4808         MonoInst *ins;
4809         guint32 size;
4810
4811         mono_class_init (klass);
4812         size = mono_class_array_element_size (klass);
4813
4814         index1 = index_ins1->dreg;
4815         index2 = index_ins2->dreg;
4816
4817 #if SIZEOF_REGISTER == 8
4818         /* The array reg is 64 bits but the index reg is only 32 */
4819         if (COMPILE_LLVM (cfg)) {
4820                 /* Not needed */
4821         } else {
4822                 tmpreg = alloc_preg (cfg);
4823                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4824                 index1 = tmpreg;
4825                 tmpreg = alloc_preg (cfg);
4826                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4827                 index2 = tmpreg;
4828         }
4829 #else
4830         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4831         tmpreg = -1;
4832 #endif
4833
4834         /* range checking */
4835         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4836                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4837
4838         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4839                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4840         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4841         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4842                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4843         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4844         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4845
4846         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4847                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4848         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4849         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4850                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4851         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4852         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4853
4854         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4855         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4856         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4857         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4858         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4859
4860         ins->type = STACK_MP;
4861         ins->klass = klass;
4862         MONO_ADD_INS (cfg->cbb, ins);
4863
4864         return ins;
4865 }
4866
4867 static MonoInst*
4868 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4869 {
4870         int rank;
4871         MonoInst *addr;
4872         MonoMethod *addr_method;
4873         int element_size;
4874         MonoClass *eclass = cmethod->klass->element_class;
4875
4876         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4877
4878         if (rank == 1)
4879                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4880
4881         /* emit_ldelema_2 depends on OP_LMUL */
4882         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4883                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4884         }
4885
4886         if (mini_is_gsharedvt_variable_klass (eclass))
4887                 element_size = 0;
4888         else
4889                 element_size = mono_class_array_element_size (eclass);
4890         addr_method = mono_marshal_get_array_address (rank, element_size);
4891         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4892
4893         return addr;
4894 }
4895
4896 static MonoBreakPolicy
4897 always_insert_breakpoint (MonoMethod *method)
4898 {
4899         return MONO_BREAK_POLICY_ALWAYS;
4900 }
4901
4902 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4903
4904 /**
4905  * mono_set_break_policy:
4906  * policy_callback: the new callback function
4907  *
4908  * Allow embedders to decide wherther to actually obey breakpoint instructions
4909  * (both break IL instructions and Debugger.Break () method calls), for example
4910  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4911  * untrusted or semi-trusted code.
4912  *
4913  * @policy_callback will be called every time a break point instruction needs to
4914  * be inserted with the method argument being the method that calls Debugger.Break()
4915  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
4916  * if it wants the breakpoint to not be effective in the given method.
4917  * #MONO_BREAK_POLICY_ALWAYS is the default.
4918  */
4919 void
4920 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4921 {
4922         if (policy_callback)
4923                 break_policy_func = policy_callback;
4924         else
4925                 break_policy_func = always_insert_breakpoint;
4926 }
4927
4928 static gboolean
4929 should_insert_brekpoint (MonoMethod *method) {
4930         switch (break_policy_func (method)) {
4931         case MONO_BREAK_POLICY_ALWAYS:
4932                 return TRUE;
4933         case MONO_BREAK_POLICY_NEVER:
4934                 return FALSE;
4935         case MONO_BREAK_POLICY_ON_DBG:
4936                 g_warning ("mdb no longer supported");
4937                 return FALSE;
4938         default:
4939                 g_warning ("Incorrect value returned from break policy callback");
4940                 return FALSE;
4941         }
4942 }
4943
4944 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4945 static MonoInst*
4946 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4947 {
4948         MonoInst *addr, *store, *load;
4949         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4950
4951         /* the bounds check is already done by the callers */
4952         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4953         if (is_set) {
4954                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4955                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4956                 if (mini_type_is_reference (&eklass->byval_arg))
4957                         emit_write_barrier (cfg, addr, load);
4958         } else {
4959                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4960                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4961         }
4962         return store;
4963 }
4964
4965
4966 static gboolean
4967 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4968 {
4969         return mini_type_is_reference (&klass->byval_arg);
4970 }
4971
4972 static MonoInst*
4973 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4974 {
4975         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4976                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4977                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4978                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4979                 MonoInst *iargs [3];
4980
4981                 if (!helper->slot)
4982                         mono_class_setup_vtable (obj_array);
4983                 g_assert (helper->slot);
4984
4985                 if (sp [0]->type != STACK_OBJ)
4986                         return NULL;
4987                 if (sp [2]->type != STACK_OBJ)
4988                         return NULL;
4989
4990                 iargs [2] = sp [2];
4991                 iargs [1] = sp [1];
4992                 iargs [0] = sp [0];
4993
4994                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4995         } else {
4996                 MonoInst *ins;
4997
4998                 if (mini_is_gsharedvt_variable_klass (klass)) {
4999                         MonoInst *addr;
5000
5001                         // FIXME-VT: OP_ICONST optimization
5002                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5003                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5004                         ins->opcode = OP_STOREV_MEMBASE;
5005                 } else if (sp [1]->opcode == OP_ICONST) {
5006                         int array_reg = sp [0]->dreg;
5007                         int index_reg = sp [1]->dreg;
5008                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5009
5010                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5011                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5012
5013                         if (safety_checks)
5014                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5015                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5016                 } else {
5017                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5018                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5019                         if (generic_class_is_reference_type (cfg, klass))
5020                                 emit_write_barrier (cfg, addr, sp [2]);
5021                 }
5022                 return ins;
5023         }
5024 }
5025
5026 static MonoInst*
5027 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5028 {
5029         MonoClass *eklass;
5030
5031         if (is_set)
5032                 eklass = mono_class_from_mono_type (fsig->params [2]);
5033         else
5034                 eklass = mono_class_from_mono_type (fsig->ret);
5035
5036         if (is_set) {
5037                 return emit_array_store (cfg, eklass, args, FALSE);
5038         } else {
5039                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5040                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5041                 return ins;
5042         }
5043 }
5044
5045 static gboolean
5046 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5047 {
5048         uint32_t align;
5049         int param_size, return_size;
5050
5051         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5052         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5053
5054         if (cfg->verbose_level > 3)
5055                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5056
5057         //Don't allow mixing reference types with value types
5058         if (param_klass->valuetype != return_klass->valuetype) {
5059                 if (cfg->verbose_level > 3)
5060                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5061                 return FALSE;
5062         }
5063
5064         if (!param_klass->valuetype) {
5065                 if (cfg->verbose_level > 3)
5066                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5067                 return TRUE;
5068         }
5069
5070         //That are blitable
5071         if (param_klass->has_references || return_klass->has_references)
5072                 return FALSE;
5073
5074         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5075         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5076                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5077                         if (cfg->verbose_level > 3)
5078                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5079                 return FALSE;
5080         }
5081
5082         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5083                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5084                 if (cfg->verbose_level > 3)
5085                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5086                 return FALSE;
5087         }
5088
5089         param_size = mono_class_value_size (param_klass, &align);
5090         return_size = mono_class_value_size (return_klass, &align);
5091
5092         //We can do it if sizes match
5093         if (param_size == return_size) {
5094                 if (cfg->verbose_level > 3)
5095                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5096                 return TRUE;
5097         }
5098
5099         //No simple way to handle struct if sizes don't match
5100         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5101                 if (cfg->verbose_level > 3)
5102                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5103                 return FALSE;
5104         }
5105
5106         /*
5107          * Same reg size category.
5108          * A quick note on why we don't require widening here.
5109          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5110          *
5111          * Since the source value comes from a function argument, the JIT will already have
5112          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5113          */
5114         if (param_size <= 4 && return_size <= 4) {
5115                 if (cfg->verbose_level > 3)
5116                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5117                 return TRUE;
5118         }
5119
5120         return FALSE;
5121 }
5122
5123 static MonoInst*
5124 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5125 {
5126         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5127         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5128
5129         if (mini_is_gsharedvt_variable_type (fsig->ret))
5130                 return NULL;
5131
5132         //Valuetypes that are semantically equivalent or numbers than can be widened to
5133         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5134                 return args [0];
5135
5136         //Arrays of valuetypes that are semantically equivalent
5137         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5138                 return args [0];
5139
5140         return NULL;
5141 }
5142
5143 static MonoInst*
5144 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5145 {
5146 #ifdef MONO_ARCH_SIMD_INTRINSICS
5147         MonoInst *ins = NULL;
5148
5149         if (cfg->opt & MONO_OPT_SIMD) {
5150                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5151                 if (ins)
5152                         return ins;
5153         }
5154 #endif
5155
5156         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5157 }
5158
5159 static MonoInst*
5160 emit_memory_barrier (MonoCompile *cfg, int kind)
5161 {
5162         MonoInst *ins = NULL;
5163         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5164         MONO_ADD_INS (cfg->cbb, ins);
5165         ins->backend.memory_barrier_kind = kind;
5166
5167         return ins;
5168 }
5169
5170 static MonoInst*
5171 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5172 {
5173         MonoInst *ins = NULL;
5174         int opcode = 0;
5175
5176         /* The LLVM backend supports these intrinsics */
5177         if (cmethod->klass == mono_defaults.math_class) {
5178                 if (strcmp (cmethod->name, "Sin") == 0) {
5179                         opcode = OP_SIN;
5180                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5181                         opcode = OP_COS;
5182                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5183                         opcode = OP_SQRT;
5184                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5185                         opcode = OP_ABS;
5186                 }
5187
5188                 if (opcode && fsig->param_count == 1) {
5189                         MONO_INST_NEW (cfg, ins, opcode);
5190                         ins->type = STACK_R8;
5191                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5192                         ins->sreg1 = args [0]->dreg;
5193                         MONO_ADD_INS (cfg->cbb, ins);
5194                 }
5195
5196                 opcode = 0;
5197                 if (cfg->opt & MONO_OPT_CMOV) {
5198                         if (strcmp (cmethod->name, "Min") == 0) {
5199                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5200                                         opcode = OP_IMIN;
5201                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5202                                         opcode = OP_IMIN_UN;
5203                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5204                                         opcode = OP_LMIN;
5205                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5206                                         opcode = OP_LMIN_UN;
5207                         } else if (strcmp (cmethod->name, "Max") == 0) {
5208                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5209                                         opcode = OP_IMAX;
5210                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5211                                         opcode = OP_IMAX_UN;
5212                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5213                                         opcode = OP_LMAX;
5214                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5215                                         opcode = OP_LMAX_UN;
5216                         }
5217                 }
5218
5219                 if (opcode && fsig->param_count == 2) {
5220                         MONO_INST_NEW (cfg, ins, opcode);
5221                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5222                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5223                         ins->sreg1 = args [0]->dreg;
5224                         ins->sreg2 = args [1]->dreg;
5225                         MONO_ADD_INS (cfg->cbb, ins);
5226                 }
5227         }
5228
5229         return ins;
5230 }
5231
5232 static MonoInst*
5233 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5234 {
5235         if (cmethod->klass == mono_defaults.array_class) {
5236                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5237                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5238                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5239                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5240                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5241                         return emit_array_unsafe_mov (cfg, fsig, args);
5242         }
5243
5244         return NULL;
5245 }
5246
5247 static MonoInst*
5248 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5249 {
5250         MonoInst *ins = NULL;
5251
5252          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5253
5254         if (cmethod->klass == mono_defaults.string_class) {
5255                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5256                         int dreg = alloc_ireg (cfg);
5257                         int index_reg = alloc_preg (cfg);
5258                         int add_reg = alloc_preg (cfg);
5259
5260 #if SIZEOF_REGISTER == 8
5261                         if (COMPILE_LLVM (cfg)) {
5262                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5263                         } else {
5264                                 /* The array reg is 64 bits but the index reg is only 32 */
5265                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5266                         }
5267 #else
5268                         index_reg = args [1]->dreg;
5269 #endif
5270                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5271
5272 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5273                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5274                         add_reg = ins->dreg;
5275                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5276                                                                    add_reg, 0);
5277 #else
5278                         int mult_reg = alloc_preg (cfg);
5279                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5280                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5281                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5282                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5283 #endif
5284                         type_from_op (cfg, ins, NULL, NULL);
5285                         return ins;
5286                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5287                         int dreg = alloc_ireg (cfg);
5288                         /* Decompose later to allow more optimizations */
5289                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5290                         ins->type = STACK_I4;
5291                         ins->flags |= MONO_INST_FAULT;
5292                         cfg->cbb->has_array_access = TRUE;
5293                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5294
5295                         return ins;
5296                 } else
5297                         return NULL;
5298         } else if (cmethod->klass == mono_defaults.object_class) {
5299                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5300                         int dreg = alloc_ireg_ref (cfg);
5301                         int vt_reg = alloc_preg (cfg);
5302                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5303                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5304                         type_from_op (cfg, ins, NULL, NULL);
5305
5306                         return ins;
5307                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5308                         int dreg = alloc_ireg (cfg);
5309                         int t1 = alloc_ireg (cfg);
5310
5311                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5312                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5313                         ins->type = STACK_I4;
5314
5315                         return ins;
5316                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5317                         MONO_INST_NEW (cfg, ins, OP_NOP);
5318                         MONO_ADD_INS (cfg->cbb, ins);
5319                         return ins;
5320                 } else
5321                         return NULL;
5322         } else if (cmethod->klass == mono_defaults.array_class) {
5323                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5324                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5325                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5326                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5327
5328 #ifndef MONO_BIG_ARRAYS
5329                 /*
5330                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5331                  * Array methods.
5332                  */
5333                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5334                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5335                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5336                         int dreg = alloc_ireg (cfg);
5337                         int bounds_reg = alloc_ireg_mp (cfg);
5338                         MonoBasicBlock *end_bb, *szarray_bb;
5339                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5340
5341                         NEW_BBLOCK (cfg, end_bb);
5342                         NEW_BBLOCK (cfg, szarray_bb);
5343
5344                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5345                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5346                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5347                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5348                         /* Non-szarray case */
5349                         if (get_length)
5350                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5351                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5352                         else
5353                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5354                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5355                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5356                         MONO_START_BB (cfg, szarray_bb);
5357                         /* Szarray case */
5358                         if (get_length)
5359                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5360                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5361                         else
5362                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5363                         MONO_START_BB (cfg, end_bb);
5364
5365                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5366                         ins->type = STACK_I4;
5367
5368                         return ins;
5369                 }
5370 #endif
5371
5372                 if (cmethod->name [0] != 'g')
5373                         return NULL;
5374
5375                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5376                         int dreg = alloc_ireg (cfg);
5377                         int vtable_reg = alloc_preg (cfg);
5378                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5379                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5380                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5381                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5382                         type_from_op (cfg, ins, NULL, NULL);
5383
5384                         return ins;
5385                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5386                         int dreg = alloc_ireg (cfg);
5387
5388                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5389                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5390                         type_from_op (cfg, ins, NULL, NULL);
5391
5392                         return ins;
5393                 } else
5394                         return NULL;
5395         } else if (cmethod->klass == runtime_helpers_class) {
5396                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5397                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5398                         return ins;
5399                 } else
5400                         return NULL;
5401         } else if (cmethod->klass == mono_defaults.monitor_class) {
5402                 gboolean is_enter = FALSE;
5403                 gboolean is_v4 = FALSE;
5404
5405                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5406                         is_enter = TRUE;
5407                         is_v4 = TRUE;
5408                 }
5409                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5410                         is_enter = TRUE;
5411
5412                 if (is_enter) {
5413                         /*
5414                          * To make async stack traces work, icalls which can block should have a wrapper.
5415                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5416                          */
5417                         MonoBasicBlock *end_bb;
5418
5419                         NEW_BBLOCK (cfg, end_bb);
5420
5421                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5422                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5423                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5424                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5425                         MONO_START_BB (cfg, end_bb);
5426                         return ins;
5427                 }
5428         } else if (cmethod->klass == mono_defaults.thread_class) {
5429                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5430                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5431                         MONO_ADD_INS (cfg->cbb, ins);
5432                         return ins;
5433                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5434                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5435                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5436                         guint32 opcode = 0;
5437                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5438
5439                         if (fsig->params [0]->type == MONO_TYPE_I1)
5440                                 opcode = OP_LOADI1_MEMBASE;
5441                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5442                                 opcode = OP_LOADU1_MEMBASE;
5443                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5444                                 opcode = OP_LOADI2_MEMBASE;
5445                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5446                                 opcode = OP_LOADU2_MEMBASE;
5447                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5448                                 opcode = OP_LOADI4_MEMBASE;
5449                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5450                                 opcode = OP_LOADU4_MEMBASE;
5451                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5452                                 opcode = OP_LOADI8_MEMBASE;
5453                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5454                                 opcode = OP_LOADR4_MEMBASE;
5455                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5456                                 opcode = OP_LOADR8_MEMBASE;
5457                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5458                                 opcode = OP_LOAD_MEMBASE;
5459
5460                         if (opcode) {
5461                                 MONO_INST_NEW (cfg, ins, opcode);
5462                                 ins->inst_basereg = args [0]->dreg;
5463                                 ins->inst_offset = 0;
5464                                 MONO_ADD_INS (cfg->cbb, ins);
5465
5466                                 switch (fsig->params [0]->type) {
5467                                 case MONO_TYPE_I1:
5468                                 case MONO_TYPE_U1:
5469                                 case MONO_TYPE_I2:
5470                                 case MONO_TYPE_U2:
5471                                 case MONO_TYPE_I4:
5472                                 case MONO_TYPE_U4:
5473                                         ins->dreg = mono_alloc_ireg (cfg);
5474                                         ins->type = STACK_I4;
5475                                         break;
5476                                 case MONO_TYPE_I8:
5477                                 case MONO_TYPE_U8:
5478                                         ins->dreg = mono_alloc_lreg (cfg);
5479                                         ins->type = STACK_I8;
5480                                         break;
5481                                 case MONO_TYPE_I:
5482                                 case MONO_TYPE_U:
5483                                         ins->dreg = mono_alloc_ireg (cfg);
5484 #if SIZEOF_REGISTER == 8
5485                                         ins->type = STACK_I8;
5486 #else
5487                                         ins->type = STACK_I4;
5488 #endif
5489                                         break;
5490                                 case MONO_TYPE_R4:
5491                                 case MONO_TYPE_R8:
5492                                         ins->dreg = mono_alloc_freg (cfg);
5493                                         ins->type = STACK_R8;
5494                                         break;
5495                                 default:
5496                                         g_assert (mini_type_is_reference (fsig->params [0]));
5497                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5498                                         ins->type = STACK_OBJ;
5499                                         break;
5500                                 }
5501
5502                                 if (opcode == OP_LOADI8_MEMBASE)
5503                                         ins = mono_decompose_opcode (cfg, ins);
5504
5505                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5506
5507                                 return ins;
5508                         }
5509                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5510                         guint32 opcode = 0;
5511                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5512
5513                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5514                                 opcode = OP_STOREI1_MEMBASE_REG;
5515                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5516                                 opcode = OP_STOREI2_MEMBASE_REG;
5517                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5518                                 opcode = OP_STOREI4_MEMBASE_REG;
5519                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5520                                 opcode = OP_STOREI8_MEMBASE_REG;
5521                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5522                                 opcode = OP_STORER4_MEMBASE_REG;
5523                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5524                                 opcode = OP_STORER8_MEMBASE_REG;
5525                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5526                                 opcode = OP_STORE_MEMBASE_REG;
5527
5528                         if (opcode) {
5529                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5530
5531                                 MONO_INST_NEW (cfg, ins, opcode);
5532                                 ins->sreg1 = args [1]->dreg;
5533                                 ins->inst_destbasereg = args [0]->dreg;
5534                                 ins->inst_offset = 0;
5535                                 MONO_ADD_INS (cfg->cbb, ins);
5536
5537                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5538                                         ins = mono_decompose_opcode (cfg, ins);
5539
5540                                 return ins;
5541                         }
5542                 }
5543         } else if (cmethod->klass->image == mono_defaults.corlib &&
5544                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5545                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5546                 ins = NULL;
5547
5548 #if SIZEOF_REGISTER == 8
5549                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5550                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5551                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5552                                 ins->dreg = mono_alloc_preg (cfg);
5553                                 ins->sreg1 = args [0]->dreg;
5554                                 ins->type = STACK_I8;
5555                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5556                                 MONO_ADD_INS (cfg->cbb, ins);
5557                         } else {
5558                                 MonoInst *load_ins;
5559
5560                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5561
5562                                 /* 64 bit reads are already atomic */
5563                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5564                                 load_ins->dreg = mono_alloc_preg (cfg);
5565                                 load_ins->inst_basereg = args [0]->dreg;
5566                                 load_ins->inst_offset = 0;
5567                                 load_ins->type = STACK_I8;
5568                                 MONO_ADD_INS (cfg->cbb, load_ins);
5569
5570                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5571
5572                                 ins = load_ins;
5573                         }
5574                 }
5575 #endif
5576
5577                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5578                         MonoInst *ins_iconst;
5579                         guint32 opcode = 0;
5580
5581                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5582                                 opcode = OP_ATOMIC_ADD_I4;
5583                                 cfg->has_atomic_add_i4 = TRUE;
5584                         }
5585 #if SIZEOF_REGISTER == 8
5586                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5587                                 opcode = OP_ATOMIC_ADD_I8;
5588 #endif
5589                         if (opcode) {
5590                                 if (!mono_arch_opcode_supported (opcode))
5591                                         return NULL;
5592                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5593                                 ins_iconst->inst_c0 = 1;
5594                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5595                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5596
5597                                 MONO_INST_NEW (cfg, ins, opcode);
5598                                 ins->dreg = mono_alloc_ireg (cfg);
5599                                 ins->inst_basereg = args [0]->dreg;
5600                                 ins->inst_offset = 0;
5601                                 ins->sreg2 = ins_iconst->dreg;
5602                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5603                                 MONO_ADD_INS (cfg->cbb, ins);
5604                         }
5605                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5606                         MonoInst *ins_iconst;
5607                         guint32 opcode = 0;
5608
5609                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5610                                 opcode = OP_ATOMIC_ADD_I4;
5611                                 cfg->has_atomic_add_i4 = TRUE;
5612                         }
5613 #if SIZEOF_REGISTER == 8
5614                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5615                                 opcode = OP_ATOMIC_ADD_I8;
5616 #endif
5617                         if (opcode) {
5618                                 if (!mono_arch_opcode_supported (opcode))
5619                                         return NULL;
5620                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5621                                 ins_iconst->inst_c0 = -1;
5622                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5623                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5624
5625                                 MONO_INST_NEW (cfg, ins, opcode);
5626                                 ins->dreg = mono_alloc_ireg (cfg);
5627                                 ins->inst_basereg = args [0]->dreg;
5628                                 ins->inst_offset = 0;
5629                                 ins->sreg2 = ins_iconst->dreg;
5630                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5631                                 MONO_ADD_INS (cfg->cbb, ins);
5632                         }
5633                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5634                         guint32 opcode = 0;
5635
5636                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5637                                 opcode = OP_ATOMIC_ADD_I4;
5638                                 cfg->has_atomic_add_i4 = TRUE;
5639                         }
5640 #if SIZEOF_REGISTER == 8
5641                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5642                                 opcode = OP_ATOMIC_ADD_I8;
5643 #endif
5644                         if (opcode) {
5645                                 if (!mono_arch_opcode_supported (opcode))
5646                                         return NULL;
5647                                 MONO_INST_NEW (cfg, ins, opcode);
5648                                 ins->dreg = mono_alloc_ireg (cfg);
5649                                 ins->inst_basereg = args [0]->dreg;
5650                                 ins->inst_offset = 0;
5651                                 ins->sreg2 = args [1]->dreg;
5652                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5653                                 MONO_ADD_INS (cfg->cbb, ins);
5654                         }
5655                 }
5656                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5657                         MonoInst *f2i = NULL, *i2f;
5658                         guint32 opcode, f2i_opcode, i2f_opcode;
5659                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5660                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5661
5662                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5663                             fsig->params [0]->type == MONO_TYPE_R4) {
5664                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5665                                 f2i_opcode = OP_MOVE_F_TO_I4;
5666                                 i2f_opcode = OP_MOVE_I4_TO_F;
5667                                 cfg->has_atomic_exchange_i4 = TRUE;
5668                         }
5669 #if SIZEOF_REGISTER == 8
5670                         else if (is_ref ||
5671                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5672                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5673                                  fsig->params [0]->type == MONO_TYPE_I) {
5674                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5675                                 f2i_opcode = OP_MOVE_F_TO_I8;
5676                                 i2f_opcode = OP_MOVE_I8_TO_F;
5677                         }
5678 #else
5679                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5680                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5681                                 cfg->has_atomic_exchange_i4 = TRUE;
5682                         }
5683 #endif
5684                         else
5685                                 return NULL;
5686
5687                         if (!mono_arch_opcode_supported (opcode))
5688                                 return NULL;
5689
5690                         if (is_float) {
5691                                 /* TODO: Decompose these opcodes instead of bailing here. */
5692                                 if (COMPILE_SOFT_FLOAT (cfg))
5693                                         return NULL;
5694
5695                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5696                                 f2i->dreg = mono_alloc_ireg (cfg);
5697                                 f2i->sreg1 = args [1]->dreg;
5698                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5699                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5700                                 MONO_ADD_INS (cfg->cbb, f2i);
5701                         }
5702
5703                         MONO_INST_NEW (cfg, ins, opcode);
5704                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5705                         ins->inst_basereg = args [0]->dreg;
5706                         ins->inst_offset = 0;
5707                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5708                         MONO_ADD_INS (cfg->cbb, ins);
5709
5710                         switch (fsig->params [0]->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                         case MONO_TYPE_R8:
5726                                 ins->type = STACK_R8;
5727                                 break;
5728                         default:
5729                                 g_assert (mini_type_is_reference (fsig->params [0]));
5730                                 ins->type = STACK_OBJ;
5731                                 break;
5732                         }
5733
5734                         if (is_float) {
5735                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5736                                 i2f->dreg = mono_alloc_freg (cfg);
5737                                 i2f->sreg1 = ins->dreg;
5738                                 i2f->type = STACK_R8;
5739                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5740                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5741                                 MONO_ADD_INS (cfg->cbb, i2f);
5742
5743                                 ins = i2f;
5744                         }
5745
5746                         if (cfg->gen_write_barriers && is_ref)
5747                                 emit_write_barrier (cfg, args [0], args [1]);
5748                 }
5749                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5750                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5751                         guint32 opcode, f2i_opcode, i2f_opcode;
5752                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5753                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5754
5755                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5756                             fsig->params [1]->type == MONO_TYPE_R4) {
5757                                 opcode = OP_ATOMIC_CAS_I4;
5758                                 f2i_opcode = OP_MOVE_F_TO_I4;
5759                                 i2f_opcode = OP_MOVE_I4_TO_F;
5760                                 cfg->has_atomic_cas_i4 = TRUE;
5761                         }
5762 #if SIZEOF_REGISTER == 8
5763                         else if (is_ref ||
5764                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5765                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5766                                  fsig->params [1]->type == MONO_TYPE_I) {
5767                                 opcode = OP_ATOMIC_CAS_I8;
5768                                 f2i_opcode = OP_MOVE_F_TO_I8;
5769                                 i2f_opcode = OP_MOVE_I8_TO_F;
5770                         }
5771 #else
5772                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5773                                 opcode = OP_ATOMIC_CAS_I4;
5774                                 cfg->has_atomic_cas_i4 = TRUE;
5775                         }
5776 #endif
5777                         else
5778                                 return NULL;
5779
5780                         if (!mono_arch_opcode_supported (opcode))
5781                                 return NULL;
5782
5783                         if (is_float) {
5784                                 /* TODO: Decompose these opcodes instead of bailing here. */
5785                                 if (COMPILE_SOFT_FLOAT (cfg))
5786                                         return NULL;
5787
5788                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5789                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5790                                 f2i_new->sreg1 = args [1]->dreg;
5791                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5792                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5793                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5794
5795                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5796                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5797                                 f2i_cmp->sreg1 = args [2]->dreg;
5798                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5799                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5800                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5801                         }
5802
5803                         MONO_INST_NEW (cfg, ins, opcode);
5804                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5805                         ins->sreg1 = args [0]->dreg;
5806                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5807                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5808                         MONO_ADD_INS (cfg->cbb, ins);
5809
5810                         switch (fsig->params [1]->type) {
5811                         case MONO_TYPE_I4:
5812                                 ins->type = STACK_I4;
5813                                 break;
5814                         case MONO_TYPE_I8:
5815                                 ins->type = STACK_I8;
5816                                 break;
5817                         case MONO_TYPE_I:
5818 #if SIZEOF_REGISTER == 8
5819                                 ins->type = STACK_I8;
5820 #else
5821                                 ins->type = STACK_I4;
5822 #endif
5823                                 break;
5824                         case MONO_TYPE_R4:
5825                                 ins->type = cfg->r4_stack_type;
5826                                 break;
5827                         case MONO_TYPE_R8:
5828                                 ins->type = STACK_R8;
5829                                 break;
5830                         default:
5831                                 g_assert (mini_type_is_reference (fsig->params [1]));
5832                                 ins->type = STACK_OBJ;
5833                                 break;
5834                         }
5835
5836                         if (is_float) {
5837                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5838                                 i2f->dreg = mono_alloc_freg (cfg);
5839                                 i2f->sreg1 = ins->dreg;
5840                                 i2f->type = STACK_R8;
5841                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5842                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5843                                 MONO_ADD_INS (cfg->cbb, i2f);
5844
5845                                 ins = i2f;
5846                         }
5847
5848                         if (cfg->gen_write_barriers && is_ref)
5849                                 emit_write_barrier (cfg, args [0], args [1]);
5850                 }
5851                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5852                          fsig->params [1]->type == MONO_TYPE_I4) {
5853                         MonoInst *cmp, *ceq;
5854
5855                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5856                                 return NULL;
5857
5858                         /* int32 r = CAS (location, value, comparand); */
5859                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5860                         ins->dreg = alloc_ireg (cfg);
5861                         ins->sreg1 = args [0]->dreg;
5862                         ins->sreg2 = args [1]->dreg;
5863                         ins->sreg3 = args [2]->dreg;
5864                         ins->type = STACK_I4;
5865                         MONO_ADD_INS (cfg->cbb, ins);
5866
5867                         /* bool result = r == comparand; */
5868                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5869                         cmp->sreg1 = ins->dreg;
5870                         cmp->sreg2 = args [2]->dreg;
5871                         cmp->type = STACK_I4;
5872                         MONO_ADD_INS (cfg->cbb, cmp);
5873
5874                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5875                         ceq->dreg = alloc_ireg (cfg);
5876                         ceq->type = STACK_I4;
5877                         MONO_ADD_INS (cfg->cbb, ceq);
5878
5879                         /* *success = result; */
5880                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5881
5882                         cfg->has_atomic_cas_i4 = TRUE;
5883                 }
5884                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5885                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5886
5887                 if (ins)
5888                         return ins;
5889         } else if (cmethod->klass->image == mono_defaults.corlib &&
5890                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5891                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5892                 ins = NULL;
5893
5894                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5895                         guint32 opcode = 0;
5896                         MonoType *t = fsig->params [0];
5897                         gboolean is_ref;
5898                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5899
5900                         g_assert (t->byref);
5901                         /* t is a byref type, so the reference check is more complicated */
5902                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5903                         if (t->type == MONO_TYPE_I1)
5904                                 opcode = OP_ATOMIC_LOAD_I1;
5905                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5906                                 opcode = OP_ATOMIC_LOAD_U1;
5907                         else if (t->type == MONO_TYPE_I2)
5908                                 opcode = OP_ATOMIC_LOAD_I2;
5909                         else if (t->type == MONO_TYPE_U2)
5910                                 opcode = OP_ATOMIC_LOAD_U2;
5911                         else if (t->type == MONO_TYPE_I4)
5912                                 opcode = OP_ATOMIC_LOAD_I4;
5913                         else if (t->type == MONO_TYPE_U4)
5914                                 opcode = OP_ATOMIC_LOAD_U4;
5915                         else if (t->type == MONO_TYPE_R4)
5916                                 opcode = OP_ATOMIC_LOAD_R4;
5917                         else if (t->type == MONO_TYPE_R8)
5918                                 opcode = OP_ATOMIC_LOAD_R8;
5919 #if SIZEOF_REGISTER == 8
5920                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5921                                 opcode = OP_ATOMIC_LOAD_I8;
5922                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5923                                 opcode = OP_ATOMIC_LOAD_U8;
5924 #else
5925                         else if (t->type == MONO_TYPE_I)
5926                                 opcode = OP_ATOMIC_LOAD_I4;
5927                         else if (is_ref || t->type == MONO_TYPE_U)
5928                                 opcode = OP_ATOMIC_LOAD_U4;
5929 #endif
5930
5931                         if (opcode) {
5932                                 if (!mono_arch_opcode_supported (opcode))
5933                                         return NULL;
5934
5935                                 MONO_INST_NEW (cfg, ins, opcode);
5936                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5937                                 ins->sreg1 = args [0]->dreg;
5938                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5939                                 MONO_ADD_INS (cfg->cbb, ins);
5940
5941                                 switch (t->type) {
5942                                 case MONO_TYPE_BOOLEAN:
5943                                 case MONO_TYPE_I1:
5944                                 case MONO_TYPE_U1:
5945                                 case MONO_TYPE_I2:
5946                                 case MONO_TYPE_U2:
5947                                 case MONO_TYPE_I4:
5948                                 case MONO_TYPE_U4:
5949                                         ins->type = STACK_I4;
5950                                         break;
5951                                 case MONO_TYPE_I8:
5952                                 case MONO_TYPE_U8:
5953                                         ins->type = STACK_I8;
5954                                         break;
5955                                 case MONO_TYPE_I:
5956                                 case MONO_TYPE_U:
5957 #if SIZEOF_REGISTER == 8
5958                                         ins->type = STACK_I8;
5959 #else
5960                                         ins->type = STACK_I4;
5961 #endif
5962                                         break;
5963                                 case MONO_TYPE_R4:
5964                                         ins->type = cfg->r4_stack_type;
5965                                         break;
5966                                 case MONO_TYPE_R8:
5967                                         ins->type = STACK_R8;
5968                                         break;
5969                                 default:
5970                                         g_assert (is_ref);
5971                                         ins->type = STACK_OBJ;
5972                                         break;
5973                                 }
5974                         }
5975                 }
5976
5977                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5978                         guint32 opcode = 0;
5979                         MonoType *t = fsig->params [0];
5980                         gboolean is_ref;
5981
5982                         g_assert (t->byref);
5983                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5984                         if (t->type == MONO_TYPE_I1)
5985                                 opcode = OP_ATOMIC_STORE_I1;
5986                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5987                                 opcode = OP_ATOMIC_STORE_U1;
5988                         else if (t->type == MONO_TYPE_I2)
5989                                 opcode = OP_ATOMIC_STORE_I2;
5990                         else if (t->type == MONO_TYPE_U2)
5991                                 opcode = OP_ATOMIC_STORE_U2;
5992                         else if (t->type == MONO_TYPE_I4)
5993                                 opcode = OP_ATOMIC_STORE_I4;
5994                         else if (t->type == MONO_TYPE_U4)
5995                                 opcode = OP_ATOMIC_STORE_U4;
5996                         else if (t->type == MONO_TYPE_R4)
5997                                 opcode = OP_ATOMIC_STORE_R4;
5998                         else if (t->type == MONO_TYPE_R8)
5999                                 opcode = OP_ATOMIC_STORE_R8;
6000 #if SIZEOF_REGISTER == 8
6001                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6002                                 opcode = OP_ATOMIC_STORE_I8;
6003                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6004                                 opcode = OP_ATOMIC_STORE_U8;
6005 #else
6006                         else if (t->type == MONO_TYPE_I)
6007                                 opcode = OP_ATOMIC_STORE_I4;
6008                         else if (is_ref || t->type == MONO_TYPE_U)
6009                                 opcode = OP_ATOMIC_STORE_U4;
6010 #endif
6011
6012                         if (opcode) {
6013                                 if (!mono_arch_opcode_supported (opcode))
6014                                         return NULL;
6015
6016                                 MONO_INST_NEW (cfg, ins, opcode);
6017                                 ins->dreg = args [0]->dreg;
6018                                 ins->sreg1 = args [1]->dreg;
6019                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6020                                 MONO_ADD_INS (cfg->cbb, ins);
6021
6022                                 if (cfg->gen_write_barriers && is_ref)
6023                                         emit_write_barrier (cfg, args [0], args [1]);
6024                         }
6025                 }
6026
6027                 if (ins)
6028                         return ins;
6029         } else if (cmethod->klass->image == mono_defaults.corlib &&
6030                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6031                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6032                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6033                         if (should_insert_brekpoint (cfg->method)) {
6034                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6035                         } else {
6036                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6037                                 MONO_ADD_INS (cfg->cbb, ins);
6038                         }
6039                         return ins;
6040                 }
6041         } else if (cmethod->klass->image == mono_defaults.corlib &&
6042                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6043                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6044                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6045 #ifdef TARGET_WIN32
6046                         EMIT_NEW_ICONST (cfg, ins, 1);
6047 #else
6048                         EMIT_NEW_ICONST (cfg, ins, 0);
6049 #endif
6050                 }
6051         } else if (cmethod->klass->image == mono_defaults.corlib &&
6052                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6053                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6054                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6055                         /* No stack walks are currently available, so implement this as an intrinsic */
6056                         MonoInst *assembly_ins;
6057
6058                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6059                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6060                         return ins;
6061                 }
6062         } else if (cmethod->klass->image == mono_defaults.corlib &&
6063                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6064                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6065                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6066                         /* No stack walks are currently available, so implement this as an intrinsic */
6067                         MonoInst *method_ins;
6068                         MonoMethod *declaring = cfg->method;
6069
6070                         /* This returns the declaring generic method */
6071                         if (declaring->is_inflated)
6072                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6073                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6074                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6075                         cfg->no_inline = TRUE;
6076                         if (cfg->method != cfg->current_method)
6077                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6078                         return ins;
6079                 }
6080         } else if (cmethod->klass == mono_defaults.math_class) {
6081                 /*
6082                  * There is general branchless code for Min/Max, but it does not work for
6083                  * all inputs:
6084                  * http://everything2.com/?node_id=1051618
6085                  */
6086         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
6087                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
6088                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
6089                 ins->dreg = alloc_preg (cfg);
6090                 ins->type = STACK_I4;
6091                 MONO_ADD_INS (cfg->cbb, ins);
6092                 return ins;
6093         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6094                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6095                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6096                                 !strcmp (cmethod->klass->name, "Selector")) ||
6097                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6098                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6099                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6100                                 !strcmp (cmethod->klass->name, "Selector"))
6101                            ) {
6102                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6103                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6104                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6105                     cfg->compile_aot) {
6106                         MonoInst *pi;
6107                         MonoJumpInfoToken *ji;
6108                         char *s;
6109
6110                         if (args [0]->opcode == OP_GOT_ENTRY) {
6111                                 pi = (MonoInst *)args [0]->inst_p1;
6112                                 g_assert (pi->opcode == OP_PATCH_INFO);
6113                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6114                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6115                         } else {
6116                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6117                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6118                         }
6119
6120                         NULLIFY_INS (args [0]);
6121
6122                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6123                         return_val_if_nok (&cfg->error, NULL);
6124
6125                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6126                         ins->dreg = mono_alloc_ireg (cfg);
6127                         // FIXME: Leaks
6128                         ins->inst_p0 = s;
6129                         MONO_ADD_INS (cfg->cbb, ins);
6130                         return ins;
6131                 }
6132         }
6133
6134 #ifdef MONO_ARCH_SIMD_INTRINSICS
6135         if (cfg->opt & MONO_OPT_SIMD) {
6136                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6137                 if (ins)
6138                         return ins;
6139         }
6140 #endif
6141
6142         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6143         if (ins)
6144                 return ins;
6145
6146         if (COMPILE_LLVM (cfg)) {
6147                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6148                 if (ins)
6149                         return ins;
6150         }
6151
6152         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6153 }
6154
6155 /*
6156  * This entry point could be used later for arbitrary method
6157  * redirection.
6158  */
6159 inline static MonoInst*
6160 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6161                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6162 {
6163         if (method->klass == mono_defaults.string_class) {
6164                 /* managed string allocation support */
6165                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6166                         MonoInst *iargs [2];
6167                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6168                         MonoMethod *managed_alloc = NULL;
6169
6170                         g_assert (vtable); /*Should not fail since it System.String*/
6171 #ifndef MONO_CROSS_COMPILE
6172                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6173 #endif
6174                         if (!managed_alloc)
6175                                 return NULL;
6176                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6177                         iargs [1] = args [0];
6178                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6179                 }
6180         }
6181         return NULL;
6182 }
6183
6184 static void
6185 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6186 {
6187         MonoInst *store, *temp;
6188         int i;
6189
6190         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6191                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6192
6193                 /*
6194                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6195                  * would be different than the MonoInst's used to represent arguments, and
6196                  * the ldelema implementation can't deal with that.
6197                  * Solution: When ldelema is used on an inline argument, create a var for
6198                  * it, emit ldelema on that var, and emit the saving code below in
6199                  * inline_method () if needed.
6200                  */
6201                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6202                 cfg->args [i] = temp;
6203                 /* This uses cfg->args [i] which is set by the preceeding line */
6204                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6205                 store->cil_code = sp [0]->cil_code;
6206                 sp++;
6207         }
6208 }
6209
6210 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6211 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6212
6213 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6214 static gboolean
6215 check_inline_called_method_name_limit (MonoMethod *called_method)
6216 {
6217         int strncmp_result;
6218         static const char *limit = NULL;
6219
6220         if (limit == NULL) {
6221                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6222
6223                 if (limit_string != NULL)
6224                         limit = limit_string;
6225                 else
6226                         limit = "";
6227         }
6228
6229         if (limit [0] != '\0') {
6230                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6231
6232                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6233                 g_free (called_method_name);
6234
6235                 //return (strncmp_result <= 0);
6236                 return (strncmp_result == 0);
6237         } else {
6238                 return TRUE;
6239         }
6240 }
6241 #endif
6242
6243 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6244 static gboolean
6245 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6246 {
6247         int strncmp_result;
6248         static const char *limit = NULL;
6249
6250         if (limit == NULL) {
6251                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6252                 if (limit_string != NULL) {
6253                         limit = limit_string;
6254                 } else {
6255                         limit = "";
6256                 }
6257         }
6258
6259         if (limit [0] != '\0') {
6260                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6261
6262                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6263                 g_free (caller_method_name);
6264
6265                 //return (strncmp_result <= 0);
6266                 return (strncmp_result == 0);
6267         } else {
6268                 return TRUE;
6269         }
6270 }
6271 #endif
6272
6273 static void
6274 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6275 {
6276         static double r8_0 = 0.0;
6277         static float r4_0 = 0.0;
6278         MonoInst *ins;
6279         int t;
6280
6281         rtype = mini_get_underlying_type (rtype);
6282         t = rtype->type;
6283
6284         if (rtype->byref) {
6285                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6286         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6287                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6288         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6289                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6290         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6291                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6292                 ins->type = STACK_R4;
6293                 ins->inst_p0 = (void*)&r4_0;
6294                 ins->dreg = dreg;
6295                 MONO_ADD_INS (cfg->cbb, ins);
6296         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6297                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6298                 ins->type = STACK_R8;
6299                 ins->inst_p0 = (void*)&r8_0;
6300                 ins->dreg = dreg;
6301                 MONO_ADD_INS (cfg->cbb, ins);
6302         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6303                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6304                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6305         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6306                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6307         } else {
6308                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6309         }
6310 }
6311
6312 static void
6313 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6314 {
6315         int t;
6316
6317         rtype = mini_get_underlying_type (rtype);
6318         t = rtype->type;
6319
6320         if (rtype->byref) {
6321                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6322         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6323                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6324         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6325                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6326         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6327                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6328         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6329                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6330         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6331                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6332                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6333         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6334                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6335         } else {
6336                 emit_init_rvar (cfg, dreg, rtype);
6337         }
6338 }
6339
6340 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6341 static void
6342 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6343 {
6344         MonoInst *var = cfg->locals [local];
6345         if (COMPILE_SOFT_FLOAT (cfg)) {
6346                 MonoInst *store;
6347                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6348                 emit_init_rvar (cfg, reg, type);
6349                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6350         } else {
6351                 if (init)
6352                         emit_init_rvar (cfg, var->dreg, type);
6353                 else
6354                         emit_dummy_init_rvar (cfg, var->dreg, type);
6355         }
6356 }
6357
6358 int
6359 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6360 {
6361         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6362 }
6363
6364 /*
6365  * inline_method:
6366  *
6367  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6368  */
6369 static int
6370 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6371                guchar *ip, guint real_offset, gboolean inline_always)
6372 {
6373         MonoError error;
6374         MonoInst *ins, *rvar = NULL;
6375         MonoMethodHeader *cheader;
6376         MonoBasicBlock *ebblock, *sbblock;
6377         int i, costs;
6378         MonoMethod *prev_inlined_method;
6379         MonoInst **prev_locals, **prev_args;
6380         MonoType **prev_arg_types;
6381         guint prev_real_offset;
6382         GHashTable *prev_cbb_hash;
6383         MonoBasicBlock **prev_cil_offset_to_bb;
6384         MonoBasicBlock *prev_cbb;
6385         const unsigned char *prev_ip;
6386         unsigned char *prev_cil_start;
6387         guint32 prev_cil_offset_to_bb_len;
6388         MonoMethod *prev_current_method;
6389         MonoGenericContext *prev_generic_context;
6390         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6391
6392         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6393
6394 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6395         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6396                 return 0;
6397 #endif
6398 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6399         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6400                 return 0;
6401 #endif
6402
6403         if (!fsig)
6404                 fsig = mono_method_signature (cmethod);
6405
6406         if (cfg->verbose_level > 2)
6407                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6408
6409         if (!cmethod->inline_info) {
6410                 cfg->stat_inlineable_methods++;
6411                 cmethod->inline_info = 1;
6412         }
6413
6414         /* allocate local variables */
6415         cheader = mono_method_get_header_checked (cmethod, &error);
6416         if (!cheader) {
6417                 if (inline_always) {
6418                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6419                         mono_error_move (&cfg->error, &error);
6420                 } else {
6421                         mono_error_cleanup (&error);
6422                 }
6423                 return 0;
6424         }
6425
6426         /*Must verify before creating locals as it can cause the JIT to assert.*/
6427         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6428                 mono_metadata_free_mh (cheader);
6429                 return 0;
6430         }
6431
6432         /* allocate space to store the return value */
6433         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6434                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6435         }
6436
6437         prev_locals = cfg->locals;
6438         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6439         for (i = 0; i < cheader->num_locals; ++i)
6440                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6441
6442         /* allocate start and end blocks */
6443         /* This is needed so if the inline is aborted, we can clean up */
6444         NEW_BBLOCK (cfg, sbblock);
6445         sbblock->real_offset = real_offset;
6446
6447         NEW_BBLOCK (cfg, ebblock);
6448         ebblock->block_num = cfg->num_bblocks++;
6449         ebblock->real_offset = real_offset;
6450
6451         prev_args = cfg->args;
6452         prev_arg_types = cfg->arg_types;
6453         prev_inlined_method = cfg->inlined_method;
6454         cfg->inlined_method = cmethod;
6455         cfg->ret_var_set = FALSE;
6456         cfg->inline_depth ++;
6457         prev_real_offset = cfg->real_offset;
6458         prev_cbb_hash = cfg->cbb_hash;
6459         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6460         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6461         prev_cil_start = cfg->cil_start;
6462         prev_ip = cfg->ip;
6463         prev_cbb = cfg->cbb;
6464         prev_current_method = cfg->current_method;
6465         prev_generic_context = cfg->generic_context;
6466         prev_ret_var_set = cfg->ret_var_set;
6467         prev_disable_inline = cfg->disable_inline;
6468
6469         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6470                 virtual_ = TRUE;
6471
6472         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6473
6474         ret_var_set = cfg->ret_var_set;
6475
6476         cfg->inlined_method = prev_inlined_method;
6477         cfg->real_offset = prev_real_offset;
6478         cfg->cbb_hash = prev_cbb_hash;
6479         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6480         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6481         cfg->cil_start = prev_cil_start;
6482         cfg->ip = prev_ip;
6483         cfg->locals = prev_locals;
6484         cfg->args = prev_args;
6485         cfg->arg_types = prev_arg_types;
6486         cfg->current_method = prev_current_method;
6487         cfg->generic_context = prev_generic_context;
6488         cfg->ret_var_set = prev_ret_var_set;
6489         cfg->disable_inline = prev_disable_inline;
6490         cfg->inline_depth --;
6491
6492         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6493                 if (cfg->verbose_level > 2)
6494                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6495
6496                 cfg->stat_inlined_methods++;
6497
6498                 /* always add some code to avoid block split failures */
6499                 MONO_INST_NEW (cfg, ins, OP_NOP);
6500                 MONO_ADD_INS (prev_cbb, ins);
6501
6502                 prev_cbb->next_bb = sbblock;
6503                 link_bblock (cfg, prev_cbb, sbblock);
6504
6505                 /*
6506                  * Get rid of the begin and end bblocks if possible to aid local
6507                  * optimizations.
6508                  */
6509                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6510
6511                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6512                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6513
6514                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6515                         MonoBasicBlock *prev = ebblock->in_bb [0];
6516
6517                         if (prev->next_bb == ebblock) {
6518                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6519                                 cfg->cbb = prev;
6520                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6521                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6522                                         cfg->cbb = prev_cbb;
6523                                 }
6524                         } else {
6525                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6526                                 cfg->cbb = ebblock;
6527                         }
6528                 } else {
6529                         /*
6530                          * Its possible that the rvar is set in some prev bblock, but not in others.
6531                          * (#1835).
6532                          */
6533                         if (rvar) {
6534                                 MonoBasicBlock *bb;
6535
6536                                 for (i = 0; i < ebblock->in_count; ++i) {
6537                                         bb = ebblock->in_bb [i];
6538
6539                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6540                                                 cfg->cbb = bb;
6541
6542                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6543                                         }
6544                                 }
6545                         }
6546
6547                         cfg->cbb = ebblock;
6548                 }
6549
6550                 if (rvar) {
6551                         /*
6552                          * If the inlined method contains only a throw, then the ret var is not
6553                          * set, so set it to a dummy value.
6554                          */
6555                         if (!ret_var_set)
6556                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6557
6558                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6559                         *sp++ = ins;
6560                 }
6561                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6562                 return costs + 1;
6563         } else {
6564                 if (cfg->verbose_level > 2)
6565                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6566                 cfg->exception_type = MONO_EXCEPTION_NONE;
6567
6568                 /* This gets rid of the newly added bblocks */
6569                 cfg->cbb = prev_cbb;
6570         }
6571         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6572         return 0;
6573 }
6574
6575 /*
6576  * Some of these comments may well be out-of-date.
6577  * Design decisions: we do a single pass over the IL code (and we do bblock
6578  * splitting/merging in the few cases when it's required: a back jump to an IL
6579  * address that was not already seen as bblock starting point).
6580  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6581  * Complex operations are decomposed in simpler ones right away. We need to let the
6582  * arch-specific code peek and poke inside this process somehow (except when the
6583  * optimizations can take advantage of the full semantic info of coarse opcodes).
6584  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6585  * MonoInst->opcode initially is the IL opcode or some simplification of that
6586  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6587  * opcode with value bigger than OP_LAST.
6588  * At this point the IR can be handed over to an interpreter, a dumb code generator
6589  * or to the optimizing code generator that will translate it to SSA form.
6590  *
6591  * Profiling directed optimizations.
6592  * We may compile by default with few or no optimizations and instrument the code
6593  * or the user may indicate what methods to optimize the most either in a config file
6594  * or through repeated runs where the compiler applies offline the optimizations to
6595  * each method and then decides if it was worth it.
6596  */
6597
6598 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6599 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6600 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6601 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6602 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6603 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6604 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6605 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6606
6607 /* offset from br.s -> br like opcodes */
6608 #define BIG_BRANCH_OFFSET 13
6609
6610 static gboolean
6611 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6612 {
6613         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6614
6615         return b == NULL || b == bb;
6616 }
6617
6618 static int
6619 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6620 {
6621         unsigned char *ip = start;
6622         unsigned char *target;
6623         int i;
6624         guint cli_addr;
6625         MonoBasicBlock *bblock;
6626         const MonoOpcode *opcode;
6627
6628         while (ip < end) {
6629                 cli_addr = ip - start;
6630                 i = mono_opcode_value ((const guint8 **)&ip, end);
6631                 if (i < 0)
6632                         UNVERIFIED;
6633                 opcode = &mono_opcodes [i];
6634                 switch (opcode->argument) {
6635                 case MonoInlineNone:
6636                         ip++;
6637                         break;
6638                 case MonoInlineString:
6639                 case MonoInlineType:
6640                 case MonoInlineField:
6641                 case MonoInlineMethod:
6642                 case MonoInlineTok:
6643                 case MonoInlineSig:
6644                 case MonoShortInlineR:
6645                 case MonoInlineI:
6646                         ip += 5;
6647                         break;
6648                 case MonoInlineVar:
6649                         ip += 3;
6650                         break;
6651                 case MonoShortInlineVar:
6652                 case MonoShortInlineI:
6653                         ip += 2;
6654                         break;
6655                 case MonoShortInlineBrTarget:
6656                         target = start + cli_addr + 2 + (signed char)ip [1];
6657                         GET_BBLOCK (cfg, bblock, target);
6658                         ip += 2;
6659                         if (ip < end)
6660                                 GET_BBLOCK (cfg, bblock, ip);
6661                         break;
6662                 case MonoInlineBrTarget:
6663                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6664                         GET_BBLOCK (cfg, bblock, target);
6665                         ip += 5;
6666                         if (ip < end)
6667                                 GET_BBLOCK (cfg, bblock, ip);
6668                         break;
6669                 case MonoInlineSwitch: {
6670                         guint32 n = read32 (ip + 1);
6671                         guint32 j;
6672                         ip += 5;
6673                         cli_addr += 5 + 4 * n;
6674                         target = start + cli_addr;
6675                         GET_BBLOCK (cfg, bblock, target);
6676
6677                         for (j = 0; j < n; ++j) {
6678                                 target = start + cli_addr + (gint32)read32 (ip);
6679                                 GET_BBLOCK (cfg, bblock, target);
6680                                 ip += 4;
6681                         }
6682                         break;
6683                 }
6684                 case MonoInlineR:
6685                 case MonoInlineI8:
6686                         ip += 9;
6687                         break;
6688                 default:
6689                         g_assert_not_reached ();
6690                 }
6691
6692                 if (i == CEE_THROW) {
6693                         unsigned char *bb_start = ip - 1;
6694
6695                         /* Find the start of the bblock containing the throw */
6696                         bblock = NULL;
6697                         while ((bb_start >= start) && !bblock) {
6698                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6699                                 bb_start --;
6700                         }
6701                         if (bblock)
6702                                 bblock->out_of_line = 1;
6703                 }
6704         }
6705         return 0;
6706 unverified:
6707 exception_exit:
6708         *pos = ip;
6709         return 1;
6710 }
6711
6712 static inline MonoMethod *
6713 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6714 {
6715         MonoMethod *method;
6716
6717         mono_error_init (error);
6718
6719         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6720                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6721                 if (context) {
6722                         method = mono_class_inflate_generic_method_checked (method, context, error);
6723                 }
6724         } else {
6725                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6726         }
6727
6728         return method;
6729 }
6730
6731 static inline MonoMethod *
6732 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6733 {
6734         MonoError error;
6735         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6736
6737         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6738                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6739                 method = NULL;
6740         }
6741
6742         if (!method && !cfg)
6743                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6744
6745         return method;
6746 }
6747
6748 static inline MonoClass*
6749 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
6750 {
6751         MonoError error;
6752         MonoClass *klass;
6753
6754         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6755                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
6756                 if (context) {
6757                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
6758                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6759                 }
6760         } else {
6761                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
6762                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6763         }
6764         if (klass)
6765                 mono_class_init (klass);
6766         return klass;
6767 }
6768
6769 static inline MonoMethodSignature*
6770 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6771 {
6772         MonoMethodSignature *fsig;
6773
6774         mono_error_init (error);
6775         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6776                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6777         } else {
6778                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6779                 return_val_if_nok (error, NULL);
6780         }
6781         if (context) {
6782                 fsig = mono_inflate_generic_signature(fsig, context, error);
6783         }
6784         return fsig;
6785 }
6786
6787 static MonoMethod*
6788 throw_exception (void)
6789 {
6790         static MonoMethod *method = NULL;
6791
6792         if (!method) {
6793                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6794                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6795         }
6796         g_assert (method);
6797         return method;
6798 }
6799
6800 static void
6801 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6802 {
6803         MonoMethod *thrower = throw_exception ();
6804         MonoInst *args [1];
6805
6806         EMIT_NEW_PCONST (cfg, args [0], ex);
6807         mono_emit_method_call (cfg, thrower, args, NULL);
6808 }
6809
6810 /*
6811  * Return the original method is a wrapper is specified. We can only access
6812  * the custom attributes from the original method.
6813  */
6814 static MonoMethod*
6815 get_original_method (MonoMethod *method)
6816 {
6817         if (method->wrapper_type == MONO_WRAPPER_NONE)
6818                 return method;
6819
6820         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6821         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6822                 return NULL;
6823
6824         /* in other cases we need to find the original method */
6825         return mono_marshal_method_from_wrapper (method);
6826 }
6827
6828 static void
6829 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6830 {
6831         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6832         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6833         if (ex)
6834                 emit_throw_exception (cfg, ex);
6835 }
6836
6837 static void
6838 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6839 {
6840         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6841         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6842         if (ex)
6843                 emit_throw_exception (cfg, ex);
6844 }
6845
6846 /*
6847  * Check that the IL instructions at ip are the array initialization
6848  * sequence and return the pointer to the data and the size.
6849  */
6850 static const char*
6851 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6852 {
6853         /*
6854          * newarr[System.Int32]
6855          * dup
6856          * ldtoken field valuetype ...
6857          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6858          */
6859         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6860                 MonoError error;
6861                 guint32 token = read32 (ip + 7);
6862                 guint32 field_token = read32 (ip + 2);
6863                 guint32 field_index = field_token & 0xffffff;
6864                 guint32 rva;
6865                 const char *data_ptr;
6866                 int size = 0;
6867                 MonoMethod *cmethod;
6868                 MonoClass *dummy_class;
6869                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6870                 int dummy_align;
6871
6872                 if (!field) {
6873                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6874                         return NULL;
6875                 }
6876
6877                 *out_field_token = field_token;
6878
6879                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6880                 if (!cmethod)
6881                         return NULL;
6882                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6883                         return NULL;
6884                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
6885                 case MONO_TYPE_BOOLEAN:
6886                 case MONO_TYPE_I1:
6887                 case MONO_TYPE_U1:
6888                         size = 1; break;
6889                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6890 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6891                 case MONO_TYPE_CHAR:
6892                 case MONO_TYPE_I2:
6893                 case MONO_TYPE_U2:
6894                         size = 2; break;
6895                 case MONO_TYPE_I4:
6896                 case MONO_TYPE_U4:
6897                 case MONO_TYPE_R4:
6898                         size = 4; break;
6899                 case MONO_TYPE_R8:
6900                 case MONO_TYPE_I8:
6901                 case MONO_TYPE_U8:
6902                         size = 8; break;
6903 #endif
6904                 default:
6905                         return NULL;
6906                 }
6907                 size *= len;
6908                 if (size > mono_type_size (field->type, &dummy_align))
6909                     return NULL;
6910                 *out_size = size;
6911                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6912                 if (!image_is_dynamic (method->klass->image)) {
6913                         field_index = read32 (ip + 2) & 0xffffff;
6914                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6915                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6916                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6917                         /* for aot code we do the lookup on load */
6918                         if (aot && data_ptr)
6919                                 return (const char *)GUINT_TO_POINTER (rva);
6920                 } else {
6921                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6922                         g_assert (!aot);
6923                         data_ptr = mono_field_get_data (field);
6924                 }
6925                 return data_ptr;
6926         }
6927         return NULL;
6928 }
6929
6930 static void
6931 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6932 {
6933         MonoError error;
6934         char *method_fname = mono_method_full_name (method, TRUE);
6935         char *method_code;
6936         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6937
6938         if (!header) {
6939                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6940                 mono_error_cleanup (&error);
6941         } else if (header->code_size == 0)
6942                 method_code = g_strdup ("method body is empty.");
6943         else
6944                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6945         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6946         g_free (method_fname);
6947         g_free (method_code);
6948         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6949 }
6950
6951 static void
6952 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6953 {
6954         MonoInst *ins;
6955         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6956         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6957                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6958                 /* Optimize reg-reg moves away */
6959                 /*
6960                  * Can't optimize other opcodes, since sp[0] might point to
6961                  * the last ins of a decomposed opcode.
6962                  */
6963                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6964         } else {
6965                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6966         }
6967 }
6968
6969 /*
6970  * ldloca inhibits many optimizations so try to get rid of it in common
6971  * cases.
6972  */
6973 static inline unsigned char *
6974 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6975 {
6976         int local, token;
6977         MonoClass *klass;
6978         MonoType *type;
6979
6980         if (size == 1) {
6981                 local = ip [1];
6982                 ip += 2;
6983         } else {
6984                 local = read16 (ip + 2);
6985                 ip += 4;
6986         }
6987
6988         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6989                 /* From the INITOBJ case */
6990                 token = read32 (ip + 2);
6991                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6992                 CHECK_TYPELOAD (klass);
6993                 type = mini_get_underlying_type (&klass->byval_arg);
6994                 emit_init_local (cfg, local, type, TRUE);
6995                 return ip + 6;
6996         }
6997  exception_exit:
6998         return NULL;
6999 }
7000
7001 static MonoInst*
7002 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7003 {
7004         MonoInst *icall_args [16];
7005         MonoInst *call_target, *ins, *vtable_ins;
7006         int arg_reg, this_reg, vtable_reg;
7007         gboolean is_iface = mono_class_is_interface (cmethod->klass);
7008         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7009         gboolean variant_iface = FALSE;
7010         guint32 slot;
7011         int offset;
7012         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
7013
7014         /*
7015          * In llvm-only mode, vtables contain function descriptors instead of
7016          * method addresses/trampolines.
7017          */
7018         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7019
7020         if (is_iface)
7021                 slot = mono_method_get_imt_slot (cmethod);
7022         else
7023                 slot = mono_method_get_vtable_index (cmethod);
7024
7025         this_reg = sp [0]->dreg;
7026
7027         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7028                 variant_iface = TRUE;
7029
7030         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7031                 /*
7032                  * The simplest case, a normal virtual call.
7033                  */
7034                 int slot_reg = alloc_preg (cfg);
7035                 int addr_reg = alloc_preg (cfg);
7036                 int arg_reg = alloc_preg (cfg);
7037                 MonoBasicBlock *non_null_bb;
7038
7039                 vtable_reg = alloc_preg (cfg);
7040                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7041                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7042
7043                 /* Load the vtable slot, which contains a function descriptor. */
7044                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7045
7046                 NEW_BBLOCK (cfg, non_null_bb);
7047
7048                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7049                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7050                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7051
7052                 /* Slow path */
7053                 // FIXME: Make the wrapper use the preserveall cconv
7054                 // FIXME: Use one icall per slot for small slot numbers ?
7055                 icall_args [0] = vtable_ins;
7056                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7057                 /* Make the icall return the vtable slot value to save some code space */
7058                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7059                 ins->dreg = slot_reg;
7060                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7061
7062                 /* Fastpath */
7063                 MONO_START_BB (cfg, non_null_bb);
7064                 /* Load the address + arg from the vtable slot */
7065                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7066                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7067
7068                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7069         }
7070
7071         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
7072                 /*
7073                  * A simple interface call
7074                  *
7075                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7076                  * The imt slot contains a function descriptor for a runtime function + arg.
7077                  */
7078                 int slot_reg = alloc_preg (cfg);
7079                 int addr_reg = alloc_preg (cfg);
7080                 int arg_reg = alloc_preg (cfg);
7081                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7082
7083                 vtable_reg = alloc_preg (cfg);
7084                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7085                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7086
7087                 /*
7088                  * The slot is already initialized when the vtable is created so there is no need
7089                  * to check it here.
7090                  */
7091
7092                 /* Load the imt slot, which contains a function descriptor. */
7093                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7094
7095                 /* Load the address + arg of the imt thunk from the imt slot */
7096                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7097                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7098                 /*
7099                  * IMT thunks in llvm-only mode are C functions which take an info argument
7100                  * plus the imt method and return the ftndesc to call.
7101                  */
7102                 icall_args [0] = thunk_arg_ins;
7103                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7104                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7105                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7106
7107                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7108         }
7109
7110         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
7111                 /*
7112                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7113                  * dynamically extended as more instantiations are discovered.
7114                  * This handles generic virtual methods both on classes and interfaces.
7115                  */
7116                 int slot_reg = alloc_preg (cfg);
7117                 int addr_reg = alloc_preg (cfg);
7118                 int arg_reg = alloc_preg (cfg);
7119                 int ftndesc_reg = alloc_preg (cfg);
7120                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7121                 MonoBasicBlock *slowpath_bb, *end_bb;
7122
7123                 NEW_BBLOCK (cfg, slowpath_bb);
7124                 NEW_BBLOCK (cfg, end_bb);
7125
7126                 vtable_reg = alloc_preg (cfg);
7127                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7128                 if (is_iface)
7129                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7130                 else
7131                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7132
7133                 /* Load the slot, which contains a function descriptor. */
7134                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7135
7136                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7137                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7138                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7139                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7140
7141                 /* Fastpath */
7142                 /* Same as with iface calls */
7143                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7144                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7145                 icall_args [0] = thunk_arg_ins;
7146                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7147                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7148                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7149                 ftndesc_ins->dreg = ftndesc_reg;
7150                 /*
7151                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7152                  * they don't know about yet. Fall back to the slowpath in that case.
7153                  */
7154                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7155                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7156
7157                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7158
7159                 /* Slowpath */
7160                 MONO_START_BB (cfg, slowpath_bb);
7161                 icall_args [0] = vtable_ins;
7162                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7163                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7164                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7165                 if (is_iface)
7166                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7167                 else
7168                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7169                 ftndesc_ins->dreg = ftndesc_reg;
7170                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7171
7172                 /* Common case */
7173                 MONO_START_BB (cfg, end_bb);
7174                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7175         }
7176
7177         /*
7178          * Non-optimized cases
7179          */
7180         icall_args [0] = sp [0];
7181         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7182
7183         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7184                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7185
7186         arg_reg = alloc_preg (cfg);
7187         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7188         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7189
7190         g_assert (is_gsharedvt);
7191         if (is_iface)
7192                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7193         else
7194                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7195
7196         /*
7197          * Pass the extra argument even if the callee doesn't receive it, most
7198          * calling conventions allow this.
7199          */
7200         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7201 }
7202
7203 static gboolean
7204 is_exception_class (MonoClass *klass)
7205 {
7206         while (klass) {
7207                 if (klass == mono_defaults.exception_class)
7208                         return TRUE;
7209                 klass = klass->parent;
7210         }
7211         return FALSE;
7212 }
7213
7214 /*
7215  * is_jit_optimizer_disabled:
7216  *
7217  *   Determine whenever M's assembly has a DebuggableAttribute with the
7218  * IsJITOptimizerDisabled flag set.
7219  */
7220 static gboolean
7221 is_jit_optimizer_disabled (MonoMethod *m)
7222 {
7223         MonoError error;
7224         MonoAssembly *ass = m->klass->image->assembly;
7225         MonoCustomAttrInfo* attrs;
7226         MonoClass *klass;
7227         int i;
7228         gboolean val = FALSE;
7229
7230         g_assert (ass);
7231         if (ass->jit_optimizer_disabled_inited)
7232                 return ass->jit_optimizer_disabled;
7233
7234         klass = mono_class_try_get_debuggable_attribute_class ();
7235
7236         if (!klass) {
7237                 /* Linked away */
7238                 ass->jit_optimizer_disabled = FALSE;
7239                 mono_memory_barrier ();
7240                 ass->jit_optimizer_disabled_inited = TRUE;
7241                 return FALSE;
7242         }
7243
7244         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7245         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7246         if (attrs) {
7247                 for (i = 0; i < attrs->num_attrs; ++i) {
7248                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7249                         const gchar *p;
7250                         MonoMethodSignature *sig;
7251
7252                         if (!attr->ctor || attr->ctor->klass != klass)
7253                                 continue;
7254                         /* Decode the attribute. See reflection.c */
7255                         p = (const char*)attr->data;
7256                         g_assert (read16 (p) == 0x0001);
7257                         p += 2;
7258
7259                         // FIXME: Support named parameters
7260                         sig = mono_method_signature (attr->ctor);
7261                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7262                                 continue;
7263                         /* Two boolean arguments */
7264                         p ++;
7265                         val = *p;
7266                 }
7267                 mono_custom_attrs_free (attrs);
7268         }
7269
7270         ass->jit_optimizer_disabled = val;
7271         mono_memory_barrier ();
7272         ass->jit_optimizer_disabled_inited = TRUE;
7273
7274         return val;
7275 }
7276
7277 static gboolean
7278 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7279 {
7280         gboolean supported_tail_call;
7281         int i;
7282
7283         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7284
7285         for (i = 0; i < fsig->param_count; ++i) {
7286                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7287                         /* These can point to the current method's stack */
7288                         supported_tail_call = FALSE;
7289         }
7290         if (fsig->hasthis && cmethod->klass->valuetype)
7291                 /* this might point to the current method's stack */
7292                 supported_tail_call = FALSE;
7293         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7294                 supported_tail_call = FALSE;
7295         if (cfg->method->save_lmf)
7296                 supported_tail_call = FALSE;
7297         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7298                 supported_tail_call = FALSE;
7299         if (call_opcode != CEE_CALL)
7300                 supported_tail_call = FALSE;
7301
7302         /* Debugging support */
7303 #if 0
7304         if (supported_tail_call) {
7305                 if (!mono_debug_count ())
7306                         supported_tail_call = FALSE;
7307         }
7308 #endif
7309
7310         return supported_tail_call;
7311 }
7312
7313 /*
7314  * handle_ctor_call:
7315  *
7316  *   Handle calls made to ctors from NEWOBJ opcodes.
7317  */
7318 static void
7319 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7320                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7321 {
7322         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7323
7324         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7325                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7326                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7327                         mono_class_vtable (cfg->domain, cmethod->klass);
7328                         CHECK_TYPELOAD (cmethod->klass);
7329
7330                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7331                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7332                 } else {
7333                         if (context_used) {
7334                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7335                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7336                         } else {
7337                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7338
7339                                 CHECK_TYPELOAD (cmethod->klass);
7340                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7341                         }
7342                 }
7343         }
7344
7345         /* Avoid virtual calls to ctors if possible */
7346         if (mono_class_is_marshalbyref (cmethod->klass))
7347                 callvirt_this_arg = sp [0];
7348
7349         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7350                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7351                 CHECK_CFG_EXCEPTION;
7352         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7353                            mono_method_check_inlining (cfg, cmethod) &&
7354                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7355                 int costs;
7356
7357                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7358                         cfg->real_offset += 5;
7359
7360                         *inline_costs += costs - 5;
7361                 } else {
7362                         INLINE_FAILURE ("inline failure");
7363                         // FIXME-VT: Clean this up
7364                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7365                                 GSHAREDVT_FAILURE(*ip);
7366                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7367                 }
7368         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7369                 MonoInst *addr;
7370
7371                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7372
7373                 if (cfg->llvm_only) {
7374                         // FIXME: Avoid initializing vtable_arg
7375                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7376                 } else {
7377                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7378                 }
7379         } else if (context_used &&
7380                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7381                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7382                 MonoInst *cmethod_addr;
7383
7384                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7385
7386                 if (cfg->llvm_only) {
7387                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7388                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7389                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7390                 } else {
7391                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7392                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7393
7394                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7395                 }
7396         } else {
7397                 INLINE_FAILURE ("ctor call");
7398                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7399                                                                                   callvirt_this_arg, NULL, vtable_arg);
7400         }
7401  exception_exit:
7402         return;
7403 }
7404
7405 static void
7406 emit_setret (MonoCompile *cfg, MonoInst *val)
7407 {
7408         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7409         MonoInst *ins;
7410
7411         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7412                 MonoInst *ret_addr;
7413
7414                 if (!cfg->vret_addr) {
7415                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7416                 } else {
7417                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7418
7419                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7420                         ins->klass = mono_class_from_mono_type (ret_type);
7421                 }
7422         } else {
7423 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7424                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7425                         MonoInst *iargs [1];
7426                         MonoInst *conv;
7427
7428                         iargs [0] = val;
7429                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7430                         mono_arch_emit_setret (cfg, cfg->method, conv);
7431                 } else {
7432                         mono_arch_emit_setret (cfg, cfg->method, val);
7433                 }
7434 #else
7435                 mono_arch_emit_setret (cfg, cfg->method, val);
7436 #endif
7437         }
7438 }
7439
7440 /*
7441  * mono_method_to_ir:
7442  *
7443  * Translate the .net IL into linear IR.
7444  *
7445  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7446  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7447  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7448  * @inline_args: if not NULL, contains the arguments to the inline call
7449  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7450  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7451  *
7452  * This method is used to turn ECMA IL into Mono's internal Linear IR
7453  * reprensetation.  It is used both for entire methods, as well as
7454  * inlining existing methods.  In the former case, the @start_bblock,
7455  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7456  * inline_offset is set to zero.
7457  *
7458  * Returns: the inline cost, or -1 if there was an error processing this method.
7459  */
7460 int
7461 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7462                    MonoInst *return_var, MonoInst **inline_args,
7463                    guint inline_offset, gboolean is_virtual_call)
7464 {
7465         MonoError error;
7466         MonoInst *ins, **sp, **stack_start;
7467         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7468         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7469         MonoMethod *cmethod, *method_definition;
7470         MonoInst **arg_array;
7471         MonoMethodHeader *header;
7472         MonoImage *image;
7473         guint32 token, ins_flag;
7474         MonoClass *klass;
7475         MonoClass *constrained_class = NULL;
7476         unsigned char *ip, *end, *target, *err_pos;
7477         MonoMethodSignature *sig;
7478         MonoGenericContext *generic_context = NULL;
7479         MonoGenericContainer *generic_container = NULL;
7480         MonoType **param_types;
7481         int i, n, start_new_bblock, dreg;
7482         int num_calls = 0, inline_costs = 0;
7483         int breakpoint_id = 0;
7484         guint num_args;
7485         GSList *class_inits = NULL;
7486         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7487         int context_used;
7488         gboolean init_locals, seq_points, skip_dead_blocks;
7489         gboolean sym_seq_points = FALSE;
7490         MonoDebugMethodInfo *minfo;
7491         MonoBitSet *seq_point_locs = NULL;
7492         MonoBitSet *seq_point_set_locs = NULL;
7493
7494         cfg->disable_inline = is_jit_optimizer_disabled (method);
7495
7496         /* serialization and xdomain stuff may need access to private fields and methods */
7497         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7498         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7499         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7500         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7501         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7502         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7503
7504         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7505         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7506         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7507         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7508         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7509
7510         image = method->klass->image;
7511         header = mono_method_get_header_checked (method, &cfg->error);
7512         if (!header) {
7513                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7514                 goto exception_exit;
7515         } else {
7516                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7517         }
7518
7519         generic_container = mono_method_get_generic_container (method);
7520         sig = mono_method_signature (method);
7521         num_args = sig->hasthis + sig->param_count;
7522         ip = (unsigned char*)header->code;
7523         cfg->cil_start = ip;
7524         end = ip + header->code_size;
7525         cfg->stat_cil_code_size += header->code_size;
7526
7527         seq_points = cfg->gen_seq_points && cfg->method == method;
7528
7529         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7530                 /* We could hit a seq point before attaching to the JIT (#8338) */
7531                 seq_points = FALSE;
7532         }
7533
7534         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7535                 minfo = mono_debug_lookup_method (method);
7536                 if (minfo) {
7537                         MonoSymSeqPoint *sps;
7538                         int i, n_il_offsets;
7539
7540                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7541                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7542                         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);
7543                         sym_seq_points = TRUE;
7544                         for (i = 0; i < n_il_offsets; ++i) {
7545                                 if (sps [i].il_offset < header->code_size)
7546                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7547                         }
7548                         g_free (sps);
7549                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7550                         /* Methods without line number info like auto-generated property accessors */
7551                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7552                         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);
7553                         sym_seq_points = TRUE;
7554                 }
7555         }
7556
7557         /*
7558          * Methods without init_locals set could cause asserts in various passes
7559          * (#497220). To work around this, we emit dummy initialization opcodes
7560          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7561          * on some platforms.
7562          */
7563         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7564                 init_locals = header->init_locals;
7565         else
7566                 init_locals = TRUE;
7567
7568         method_definition = method;
7569         while (method_definition->is_inflated) {
7570                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7571                 method_definition = imethod->declaring;
7572         }
7573
7574         /* SkipVerification is not allowed if core-clr is enabled */
7575         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7576                 dont_verify = TRUE;
7577                 dont_verify_stloc = TRUE;
7578         }
7579
7580         if (sig->is_inflated)
7581                 generic_context = mono_method_get_context (method);
7582         else if (generic_container)
7583                 generic_context = &generic_container->context;
7584         cfg->generic_context = generic_context;
7585
7586         if (!cfg->gshared)
7587                 g_assert (!sig->has_type_parameters);
7588
7589         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7590                 g_assert (method->is_inflated);
7591                 g_assert (mono_method_get_context (method)->method_inst);
7592         }
7593         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7594                 g_assert (sig->generic_param_count);
7595
7596         if (cfg->method == method) {
7597                 cfg->real_offset = 0;
7598         } else {
7599                 cfg->real_offset = inline_offset;
7600         }
7601
7602         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7603         cfg->cil_offset_to_bb_len = header->code_size;
7604
7605         cfg->current_method = method;
7606
7607         if (cfg->verbose_level > 2)
7608                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7609
7610         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7611         if (sig->hasthis)
7612                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7613         for (n = 0; n < sig->param_count; ++n)
7614                 param_types [n + sig->hasthis] = sig->params [n];
7615         cfg->arg_types = param_types;
7616
7617         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7618         if (cfg->method == method) {
7619
7620                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7621                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7622
7623                 /* ENTRY BLOCK */
7624                 NEW_BBLOCK (cfg, start_bblock);
7625                 cfg->bb_entry = start_bblock;
7626                 start_bblock->cil_code = NULL;
7627                 start_bblock->cil_length = 0;
7628
7629                 /* EXIT BLOCK */
7630                 NEW_BBLOCK (cfg, end_bblock);
7631                 cfg->bb_exit = end_bblock;
7632                 end_bblock->cil_code = NULL;
7633                 end_bblock->cil_length = 0;
7634                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7635                 g_assert (cfg->num_bblocks == 2);
7636
7637                 arg_array = cfg->args;
7638
7639                 if (header->num_clauses) {
7640                         cfg->spvars = g_hash_table_new (NULL, NULL);
7641                         cfg->exvars = g_hash_table_new (NULL, NULL);
7642                 }
7643                 /* handle exception clauses */
7644                 for (i = 0; i < header->num_clauses; ++i) {
7645                         MonoBasicBlock *try_bb;
7646                         MonoExceptionClause *clause = &header->clauses [i];
7647                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7648
7649                         try_bb->real_offset = clause->try_offset;
7650                         try_bb->try_start = TRUE;
7651                         try_bb->region = ((i + 1) << 8) | clause->flags;
7652                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7653                         tblock->real_offset = clause->handler_offset;
7654                         tblock->flags |= BB_EXCEPTION_HANDLER;
7655
7656                         /*
7657                          * Linking the try block with the EH block hinders inlining as we won't be able to
7658                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7659                          */
7660                         if (COMPILE_LLVM (cfg))
7661                                 link_bblock (cfg, try_bb, tblock);
7662
7663                         if (*(ip + clause->handler_offset) == CEE_POP)
7664                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7665
7666                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7667                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7668                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7669                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7670                                 MONO_ADD_INS (tblock, ins);
7671
7672                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7673                                         /* finally clauses already have a seq point */
7674                                         /* seq points for filter clauses are emitted below */
7675                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7676                                         MONO_ADD_INS (tblock, ins);
7677                                 }
7678
7679                                 /* todo: is a fault block unsafe to optimize? */
7680                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7681                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7682                         }
7683
7684                         /*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);
7685                           while (p < end) {
7686                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7687                           }*/
7688                         /* catch and filter blocks get the exception object on the stack */
7689                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7690                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7691
7692                                 /* mostly like handle_stack_args (), but just sets the input args */
7693                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7694                                 tblock->in_scount = 1;
7695                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7696                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7697
7698                                 cfg->cbb = tblock;
7699
7700 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7701                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7702                                 if (!cfg->compile_llvm) {
7703                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7704                                         ins->dreg = tblock->in_stack [0]->dreg;
7705                                         MONO_ADD_INS (tblock, ins);
7706                                 }
7707 #else
7708                                 MonoInst *dummy_use;
7709
7710                                 /*
7711                                  * Add a dummy use for the exvar so its liveness info will be
7712                                  * correct.
7713                                  */
7714                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7715 #endif
7716
7717                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7718                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7719                                         MONO_ADD_INS (tblock, ins);
7720                                 }
7721
7722                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7723                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7724                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7725                                         tblock->real_offset = clause->data.filter_offset;
7726                                         tblock->in_scount = 1;
7727                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7728                                         /* The filter block shares the exvar with the handler block */
7729                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7730                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7731                                         MONO_ADD_INS (tblock, ins);
7732                                 }
7733                         }
7734
7735                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7736                                         clause->data.catch_class &&
7737                                         cfg->gshared &&
7738                                         mono_class_check_context_used (clause->data.catch_class)) {
7739                                 /*
7740                                  * In shared generic code with catch
7741                                  * clauses containing type variables
7742                                  * the exception handling code has to
7743                                  * be able to get to the rgctx.
7744                                  * Therefore we have to make sure that
7745                                  * the vtable/mrgctx argument (for
7746                                  * static or generic methods) or the
7747                                  * "this" argument (for non-static
7748                                  * methods) are live.
7749                                  */
7750                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7751                                                 mini_method_get_context (method)->method_inst ||
7752                                                 method->klass->valuetype) {
7753                                         mono_get_vtable_var (cfg);
7754                                 } else {
7755                                         MonoInst *dummy_use;
7756
7757                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7758                                 }
7759                         }
7760                 }
7761         } else {
7762                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7763                 cfg->cbb = start_bblock;
7764                 cfg->args = arg_array;
7765                 mono_save_args (cfg, sig, inline_args);
7766         }
7767
7768         /* FIRST CODE BLOCK */
7769         NEW_BBLOCK (cfg, tblock);
7770         tblock->cil_code = ip;
7771         cfg->cbb = tblock;
7772         cfg->ip = ip;
7773
7774         ADD_BBLOCK (cfg, tblock);
7775
7776         if (cfg->method == method) {
7777                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7778                 if (breakpoint_id) {
7779                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7780                         MONO_ADD_INS (cfg->cbb, ins);
7781                 }
7782         }
7783
7784         /* we use a separate basic block for the initialization code */
7785         NEW_BBLOCK (cfg, init_localsbb);
7786         if (cfg->method == method)
7787                 cfg->bb_init = init_localsbb;
7788         init_localsbb->real_offset = cfg->real_offset;
7789         start_bblock->next_bb = init_localsbb;
7790         init_localsbb->next_bb = cfg->cbb;
7791         link_bblock (cfg, start_bblock, init_localsbb);
7792         link_bblock (cfg, init_localsbb, cfg->cbb);
7793
7794         cfg->cbb = init_localsbb;
7795
7796         if (cfg->gsharedvt && cfg->method == method) {
7797                 MonoGSharedVtMethodInfo *info;
7798                 MonoInst *var, *locals_var;
7799                 int dreg;
7800
7801                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7802                 info->method = cfg->method;
7803                 info->count_entries = 16;
7804                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7805                 cfg->gsharedvt_info = info;
7806
7807                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7808                 /* prevent it from being register allocated */
7809                 //var->flags |= MONO_INST_VOLATILE;
7810                 cfg->gsharedvt_info_var = var;
7811
7812                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7813                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7814
7815                 /* Allocate locals */
7816                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7817                 /* prevent it from being register allocated */
7818                 //locals_var->flags |= MONO_INST_VOLATILE;
7819                 cfg->gsharedvt_locals_var = locals_var;
7820
7821                 dreg = alloc_ireg (cfg);
7822                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7823
7824                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7825                 ins->dreg = locals_var->dreg;
7826                 ins->sreg1 = dreg;
7827                 MONO_ADD_INS (cfg->cbb, ins);
7828                 cfg->gsharedvt_locals_var_ins = ins;
7829
7830                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7831                 /*
7832                 if (init_locals)
7833                         ins->flags |= MONO_INST_INIT;
7834                 */
7835         }
7836
7837         if (mono_security_core_clr_enabled ()) {
7838                 /* check if this is native code, e.g. an icall or a p/invoke */
7839                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7840                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7841                         if (wrapped) {
7842                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7843                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7844
7845                                 /* if this ia a native call then it can only be JITted from platform code */
7846                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7847                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7848                                                 MonoException *ex = icall ? mono_get_exception_security () :
7849                                                         mono_get_exception_method_access ();
7850                                                 emit_throw_exception (cfg, ex);
7851                                         }
7852                                 }
7853                         }
7854                 }
7855         }
7856
7857         CHECK_CFG_EXCEPTION;
7858
7859         if (header->code_size == 0)
7860                 UNVERIFIED;
7861
7862         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7863                 ip = err_pos;
7864                 UNVERIFIED;
7865         }
7866
7867         if (cfg->method == method)
7868                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7869
7870         for (n = 0; n < header->num_locals; ++n) {
7871                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7872                         UNVERIFIED;
7873         }
7874         class_inits = NULL;
7875
7876         /* We force the vtable variable here for all shared methods
7877            for the possibility that they might show up in a stack
7878            trace where their exact instantiation is needed. */
7879         if (cfg->gshared && method == cfg->method) {
7880                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7881                                 mini_method_get_context (method)->method_inst ||
7882                                 method->klass->valuetype) {
7883                         mono_get_vtable_var (cfg);
7884                 } else {
7885                         /* FIXME: Is there a better way to do this?
7886                            We need the variable live for the duration
7887                            of the whole method. */
7888                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7889                 }
7890         }
7891
7892         /* add a check for this != NULL to inlined methods */
7893         if (is_virtual_call) {
7894                 MonoInst *arg_ins;
7895
7896                 NEW_ARGLOAD (cfg, arg_ins, 0);
7897                 MONO_ADD_INS (cfg->cbb, arg_ins);
7898                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7899         }
7900
7901         skip_dead_blocks = !dont_verify;
7902         if (skip_dead_blocks) {
7903                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7904                 CHECK_CFG_ERROR;
7905                 g_assert (bb);
7906         }
7907
7908         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7909         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7910
7911         ins_flag = 0;
7912         start_new_bblock = 0;
7913         while (ip < end) {
7914                 if (cfg->method == method)
7915                         cfg->real_offset = ip - header->code;
7916                 else
7917                         cfg->real_offset = inline_offset;
7918                 cfg->ip = ip;
7919
7920                 context_used = 0;
7921
7922                 if (start_new_bblock) {
7923                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7924                         if (start_new_bblock == 2) {
7925                                 g_assert (ip == tblock->cil_code);
7926                         } else {
7927                                 GET_BBLOCK (cfg, tblock, ip);
7928                         }
7929                         cfg->cbb->next_bb = tblock;
7930                         cfg->cbb = tblock;
7931                         start_new_bblock = 0;
7932                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7933                                 if (cfg->verbose_level > 3)
7934                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7935                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7936                                 *sp++ = ins;
7937                         }
7938                         if (class_inits)
7939                                 g_slist_free (class_inits);
7940                         class_inits = NULL;
7941                 } else {
7942                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7943                                 link_bblock (cfg, cfg->cbb, tblock);
7944                                 if (sp != stack_start) {
7945                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7946                                         sp = stack_start;
7947                                         CHECK_UNVERIFIABLE (cfg);
7948                                 }
7949                                 cfg->cbb->next_bb = tblock;
7950                                 cfg->cbb = tblock;
7951                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7952                                         if (cfg->verbose_level > 3)
7953                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7954                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7955                                         *sp++ = ins;
7956                                 }
7957                                 g_slist_free (class_inits);
7958                                 class_inits = NULL;
7959                         }
7960                 }
7961
7962                 if (skip_dead_blocks) {
7963                         int ip_offset = ip - header->code;
7964
7965                         if (ip_offset == bb->end)
7966                                 bb = bb->next;
7967
7968                         if (bb->dead) {
7969                                 int op_size = mono_opcode_size (ip, end);
7970                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7971
7972                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7973
7974                                 if (ip_offset + op_size == bb->end) {
7975                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7976                                         MONO_ADD_INS (cfg->cbb, ins);
7977                                         start_new_bblock = 1;
7978                                 }
7979
7980                                 ip += op_size;
7981                                 continue;
7982                         }
7983                 }
7984                 /*
7985                  * Sequence points are points where the debugger can place a breakpoint.
7986                  * Currently, we generate these automatically at points where the IL
7987                  * stack is empty.
7988                  */
7989                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7990                         /*
7991                          * Make methods interruptable at the beginning, and at the targets of
7992                          * backward branches.
7993                          * Also, do this at the start of every bblock in methods with clauses too,
7994                          * to be able to handle instructions with inprecise control flow like
7995                          * throw/endfinally.
7996                          * Backward branches are handled at the end of method-to-ir ().
7997                          */
7998                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7999                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8000
8001                         /* Avoid sequence points on empty IL like .volatile */
8002                         // FIXME: Enable this
8003                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8004                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8005                         if ((sp != stack_start) && !sym_seq_point)
8006                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8007                         MONO_ADD_INS (cfg->cbb, ins);
8008
8009                         if (sym_seq_points)
8010                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8011                 }
8012
8013                 cfg->cbb->real_offset = cfg->real_offset;
8014
8015                 if ((cfg->method == method) && cfg->coverage_info) {
8016                         guint32 cil_offset = ip - header->code;
8017                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8018
8019                         /* TODO: Use an increment here */
8020 #if defined(TARGET_X86)
8021                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8022                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8023                         ins->inst_imm = 1;
8024                         MONO_ADD_INS (cfg->cbb, ins);
8025 #else
8026                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8027                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8028 #endif
8029                 }
8030
8031                 if (cfg->verbose_level > 3)
8032                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8033
8034                 switch (*ip) {
8035                 case CEE_NOP:
8036                         if (seq_points && !sym_seq_points && sp != stack_start) {
8037                                 /*
8038                                  * The C# compiler uses these nops to notify the JIT that it should
8039                                  * insert seq points.
8040                                  */
8041                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8042                                 MONO_ADD_INS (cfg->cbb, ins);
8043                         }
8044                         if (cfg->keep_cil_nops)
8045                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8046                         else
8047                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8048                         ip++;
8049                         MONO_ADD_INS (cfg->cbb, ins);
8050                         break;
8051                 case CEE_BREAK:
8052                         if (should_insert_brekpoint (cfg->method)) {
8053                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8054                         } else {
8055                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8056                         }
8057                         ip++;
8058                         MONO_ADD_INS (cfg->cbb, ins);
8059                         break;
8060                 case CEE_LDARG_0:
8061                 case CEE_LDARG_1:
8062                 case CEE_LDARG_2:
8063                 case CEE_LDARG_3:
8064                         CHECK_STACK_OVF (1);
8065                         n = (*ip)-CEE_LDARG_0;
8066                         CHECK_ARG (n);
8067                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8068                         ip++;
8069                         *sp++ = ins;
8070                         break;
8071                 case CEE_LDLOC_0:
8072                 case CEE_LDLOC_1:
8073                 case CEE_LDLOC_2:
8074                 case CEE_LDLOC_3:
8075                         CHECK_STACK_OVF (1);
8076                         n = (*ip)-CEE_LDLOC_0;
8077                         CHECK_LOCAL (n);
8078                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8079                         ip++;
8080                         *sp++ = ins;
8081                         break;
8082                 case CEE_STLOC_0:
8083                 case CEE_STLOC_1:
8084                 case CEE_STLOC_2:
8085                 case CEE_STLOC_3: {
8086                         CHECK_STACK (1);
8087                         n = (*ip)-CEE_STLOC_0;
8088                         CHECK_LOCAL (n);
8089                         --sp;
8090                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8091                                 UNVERIFIED;
8092                         emit_stloc_ir (cfg, sp, header, n);
8093                         ++ip;
8094                         inline_costs += 1;
8095                         break;
8096                         }
8097                 case CEE_LDARG_S:
8098                         CHECK_OPSIZE (2);
8099                         CHECK_STACK_OVF (1);
8100                         n = ip [1];
8101                         CHECK_ARG (n);
8102                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8103                         *sp++ = ins;
8104                         ip += 2;
8105                         break;
8106                 case CEE_LDARGA_S:
8107                         CHECK_OPSIZE (2);
8108                         CHECK_STACK_OVF (1);
8109                         n = ip [1];
8110                         CHECK_ARG (n);
8111                         NEW_ARGLOADA (cfg, ins, n);
8112                         MONO_ADD_INS (cfg->cbb, ins);
8113                         *sp++ = ins;
8114                         ip += 2;
8115                         break;
8116                 case CEE_STARG_S:
8117                         CHECK_OPSIZE (2);
8118                         CHECK_STACK (1);
8119                         --sp;
8120                         n = ip [1];
8121                         CHECK_ARG (n);
8122                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8123                                 UNVERIFIED;
8124                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8125                         ip += 2;
8126                         break;
8127                 case CEE_LDLOC_S:
8128                         CHECK_OPSIZE (2);
8129                         CHECK_STACK_OVF (1);
8130                         n = ip [1];
8131                         CHECK_LOCAL (n);
8132                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8133                         *sp++ = ins;
8134                         ip += 2;
8135                         break;
8136                 case CEE_LDLOCA_S: {
8137                         unsigned char *tmp_ip;
8138                         CHECK_OPSIZE (2);
8139                         CHECK_STACK_OVF (1);
8140                         CHECK_LOCAL (ip [1]);
8141
8142                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8143                                 ip = tmp_ip;
8144                                 inline_costs += 1;
8145                                 break;
8146                         }
8147
8148                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8149                         *sp++ = ins;
8150                         ip += 2;
8151                         break;
8152                 }
8153                 case CEE_STLOC_S:
8154                         CHECK_OPSIZE (2);
8155                         CHECK_STACK (1);
8156                         --sp;
8157                         CHECK_LOCAL (ip [1]);
8158                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8159                                 UNVERIFIED;
8160                         emit_stloc_ir (cfg, sp, header, ip [1]);
8161                         ip += 2;
8162                         inline_costs += 1;
8163                         break;
8164                 case CEE_LDNULL:
8165                         CHECK_STACK_OVF (1);
8166                         EMIT_NEW_PCONST (cfg, ins, NULL);
8167                         ins->type = STACK_OBJ;
8168                         ++ip;
8169                         *sp++ = ins;
8170                         break;
8171                 case CEE_LDC_I4_M1:
8172                         CHECK_STACK_OVF (1);
8173                         EMIT_NEW_ICONST (cfg, ins, -1);
8174                         ++ip;
8175                         *sp++ = ins;
8176                         break;
8177                 case CEE_LDC_I4_0:
8178                 case CEE_LDC_I4_1:
8179                 case CEE_LDC_I4_2:
8180                 case CEE_LDC_I4_3:
8181                 case CEE_LDC_I4_4:
8182                 case CEE_LDC_I4_5:
8183                 case CEE_LDC_I4_6:
8184                 case CEE_LDC_I4_7:
8185                 case CEE_LDC_I4_8:
8186                         CHECK_STACK_OVF (1);
8187                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8188                         ++ip;
8189                         *sp++ = ins;
8190                         break;
8191                 case CEE_LDC_I4_S:
8192                         CHECK_OPSIZE (2);
8193                         CHECK_STACK_OVF (1);
8194                         ++ip;
8195                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8196                         ++ip;
8197                         *sp++ = ins;
8198                         break;
8199                 case CEE_LDC_I4:
8200                         CHECK_OPSIZE (5);
8201                         CHECK_STACK_OVF (1);
8202                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8203                         ip += 5;
8204                         *sp++ = ins;
8205                         break;
8206                 case CEE_LDC_I8:
8207                         CHECK_OPSIZE (9);
8208                         CHECK_STACK_OVF (1);
8209                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8210                         ins->type = STACK_I8;
8211                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8212                         ++ip;
8213                         ins->inst_l = (gint64)read64 (ip);
8214                         MONO_ADD_INS (cfg->cbb, ins);
8215                         ip += 8;
8216                         *sp++ = ins;
8217                         break;
8218                 case CEE_LDC_R4: {
8219                         float *f;
8220                         gboolean use_aotconst = FALSE;
8221
8222 #ifdef TARGET_POWERPC
8223                         /* FIXME: Clean this up */
8224                         if (cfg->compile_aot)
8225                                 use_aotconst = TRUE;
8226 #endif
8227
8228                         /* FIXME: we should really allocate this only late in the compilation process */
8229                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8230                         CHECK_OPSIZE (5);
8231                         CHECK_STACK_OVF (1);
8232
8233                         if (use_aotconst) {
8234                                 MonoInst *cons;
8235                                 int dreg;
8236
8237                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8238
8239                                 dreg = alloc_freg (cfg);
8240                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8241                                 ins->type = cfg->r4_stack_type;
8242                         } else {
8243                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8244                                 ins->type = cfg->r4_stack_type;
8245                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8246                                 ins->inst_p0 = f;
8247                                 MONO_ADD_INS (cfg->cbb, ins);
8248                         }
8249                         ++ip;
8250                         readr4 (ip, f);
8251                         ip += 4;
8252                         *sp++ = ins;
8253                         break;
8254                 }
8255                 case CEE_LDC_R8: {
8256                         double *d;
8257                         gboolean use_aotconst = FALSE;
8258
8259 #ifdef TARGET_POWERPC
8260                         /* FIXME: Clean this up */
8261                         if (cfg->compile_aot)
8262                                 use_aotconst = TRUE;
8263 #endif
8264
8265                         /* FIXME: we should really allocate this only late in the compilation process */
8266                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8267                         CHECK_OPSIZE (9);
8268                         CHECK_STACK_OVF (1);
8269
8270                         if (use_aotconst) {
8271                                 MonoInst *cons;
8272                                 int dreg;
8273
8274                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8275
8276                                 dreg = alloc_freg (cfg);
8277                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8278                                 ins->type = STACK_R8;
8279                         } else {
8280                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8281                                 ins->type = STACK_R8;
8282                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8283                                 ins->inst_p0 = d;
8284                                 MONO_ADD_INS (cfg->cbb, ins);
8285                         }
8286                         ++ip;
8287                         readr8 (ip, d);
8288                         ip += 8;
8289                         *sp++ = ins;
8290                         break;
8291                 }
8292                 case CEE_DUP: {
8293                         MonoInst *temp, *store;
8294                         CHECK_STACK (1);
8295                         CHECK_STACK_OVF (1);
8296                         sp--;
8297                         ins = *sp;
8298
8299                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8300                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8301
8302                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8303                         *sp++ = ins;
8304
8305                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8306                         *sp++ = ins;
8307
8308                         ++ip;
8309                         inline_costs += 2;
8310                         break;
8311                 }
8312                 case CEE_POP:
8313                         CHECK_STACK (1);
8314                         ip++;
8315                         --sp;
8316
8317 #ifdef TARGET_X86
8318                         if (sp [0]->type == STACK_R8)
8319                                 /* we need to pop the value from the x86 FP stack */
8320                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8321 #endif
8322                         break;
8323                 case CEE_JMP: {
8324                         MonoCallInst *call;
8325                         MonoMethodSignature *fsig;
8326                         int i, n;
8327
8328                         INLINE_FAILURE ("jmp");
8329                         GSHAREDVT_FAILURE (*ip);
8330
8331                         CHECK_OPSIZE (5);
8332                         if (stack_start != sp)
8333                                 UNVERIFIED;
8334                         token = read32 (ip + 1);
8335                         /* FIXME: check the signature matches */
8336                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8337                         CHECK_CFG_ERROR;
8338
8339                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8340                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8341
8342                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8343
8344                         fsig = mono_method_signature (cmethod);
8345                         n = fsig->param_count + fsig->hasthis;
8346                         if (cfg->llvm_only) {
8347                                 MonoInst **args;
8348
8349                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8350                                 for (i = 0; i < n; ++i)
8351                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8352                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8353                                 /*
8354                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8355                                  * have to emit a normal return since llvm expects it.
8356                                  */
8357                                 if (cfg->ret)
8358                                         emit_setret (cfg, ins);
8359                                 MONO_INST_NEW (cfg, ins, OP_BR);
8360                                 ins->inst_target_bb = end_bblock;
8361                                 MONO_ADD_INS (cfg->cbb, ins);
8362                                 link_bblock (cfg, cfg->cbb, end_bblock);
8363                                 ip += 5;
8364                                 break;
8365                         } else if (cfg->backend->have_op_tail_call) {
8366                                 /* Handle tail calls similarly to calls */
8367                                 DISABLE_AOT (cfg);
8368
8369                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8370                                 call->method = cmethod;
8371                                 call->tail_call = TRUE;
8372                                 call->signature = mono_method_signature (cmethod);
8373                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8374                                 call->inst.inst_p0 = cmethod;
8375                                 for (i = 0; i < n; ++i)
8376                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8377
8378                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8379                                         call->vret_var = cfg->vret_addr;
8380
8381                                 mono_arch_emit_call (cfg, call);
8382                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8383                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8384                         } else {
8385                                 for (i = 0; i < num_args; ++i)
8386                                         /* Prevent arguments from being optimized away */
8387                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8388
8389                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8390                                 ins = (MonoInst*)call;
8391                                 ins->inst_p0 = cmethod;
8392                                 MONO_ADD_INS (cfg->cbb, ins);
8393                         }
8394
8395                         ip += 5;
8396                         start_new_bblock = 1;
8397                         break;
8398                 }
8399                 case CEE_CALLI: {
8400                         MonoInst *addr;
8401                         MonoMethodSignature *fsig;
8402
8403                         CHECK_OPSIZE (5);
8404                         token = read32 (ip + 1);
8405
8406                         ins = NULL;
8407
8408                         //GSHAREDVT_FAILURE (*ip);
8409                         cmethod = NULL;
8410                         CHECK_STACK (1);
8411                         --sp;
8412                         addr = *sp;
8413                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8414                         CHECK_CFG_ERROR;
8415
8416                         if (method->dynamic && fsig->pinvoke) {
8417                                 MonoInst *args [3];
8418
8419                                 /*
8420                                  * This is a call through a function pointer using a pinvoke
8421                                  * signature. Have to create a wrapper and call that instead.
8422                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8423                                  * instead based on the signature.
8424                                  */
8425                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8426                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8427                                 args [2] = addr;
8428                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8429                         }
8430
8431                         n = fsig->param_count + fsig->hasthis;
8432
8433                         CHECK_STACK (n);
8434
8435                         //g_assert (!virtual_ || fsig->hasthis);
8436
8437                         sp -= n;
8438
8439                         inline_costs += 10 * num_calls++;
8440
8441                         /*
8442                          * Making generic calls out of gsharedvt methods.
8443                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8444                          * patching gshared method addresses into a gsharedvt method.
8445                          */
8446                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8447                                 /*
8448                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8449                                  */
8450                                 MonoInst *callee = addr;
8451
8452                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8453                                         /* Not tested */
8454                                         GSHAREDVT_FAILURE (*ip);
8455
8456                                 if (cfg->llvm_only)
8457                                         // FIXME:
8458                                         GSHAREDVT_FAILURE (*ip);
8459
8460                                 addr = emit_get_rgctx_sig (cfg, context_used,
8461                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8462                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8463                                 goto calli_end;
8464                         }
8465
8466                         /* Prevent inlining of methods with indirect calls */
8467                         INLINE_FAILURE ("indirect call");
8468
8469                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8470                                 MonoJumpInfoType info_type;
8471                                 gpointer info_data;
8472
8473                                 /*
8474                                  * Instead of emitting an indirect call, emit a direct call
8475                                  * with the contents of the aotconst as the patch info.
8476                                  */
8477                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8478                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8479                                         info_data = addr->inst_p0;
8480                                 } else {
8481                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8482                                         info_data = addr->inst_right->inst_left;
8483                                 }
8484
8485                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8486                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8487                                         NULLIFY_INS (addr);
8488                                         goto calli_end;
8489                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8490                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8491                                         NULLIFY_INS (addr);
8492                                         goto calli_end;
8493                                 }
8494                         }
8495                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8496
8497                         calli_end:
8498
8499                         /* End of call, INS should contain the result of the call, if any */
8500
8501                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8502                                 g_assert (ins);
8503                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8504                         }
8505
8506                         CHECK_CFG_EXCEPTION;
8507
8508                         ip += 5;
8509                         ins_flag = 0;
8510                         constrained_class = NULL;
8511                         break;
8512                 }
8513                 case CEE_CALL:
8514                 case CEE_CALLVIRT: {
8515                         MonoInst *addr = NULL;
8516                         MonoMethodSignature *fsig = NULL;
8517                         int array_rank = 0;
8518                         int virtual_ = *ip == CEE_CALLVIRT;
8519                         gboolean pass_imt_from_rgctx = FALSE;
8520                         MonoInst *imt_arg = NULL;
8521                         MonoInst *keep_this_alive = NULL;
8522                         gboolean pass_vtable = FALSE;
8523                         gboolean pass_mrgctx = FALSE;
8524                         MonoInst *vtable_arg = NULL;
8525                         gboolean check_this = FALSE;
8526                         gboolean supported_tail_call = FALSE;
8527                         gboolean tail_call = FALSE;
8528                         gboolean need_seq_point = FALSE;
8529                         guint32 call_opcode = *ip;
8530                         gboolean emit_widen = TRUE;
8531                         gboolean push_res = TRUE;
8532                         gboolean skip_ret = FALSE;
8533                         gboolean delegate_invoke = FALSE;
8534                         gboolean direct_icall = FALSE;
8535                         gboolean constrained_partial_call = FALSE;
8536                         MonoMethod *cil_method;
8537
8538                         CHECK_OPSIZE (5);
8539                         token = read32 (ip + 1);
8540
8541                         ins = NULL;
8542
8543                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8544                         CHECK_CFG_ERROR;
8545
8546                         cil_method = cmethod;
8547
8548                         if (constrained_class) {
8549                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8550                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8551                                                 g_assert (!cmethod->klass->valuetype);
8552                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8553                                                         constrained_partial_call = TRUE;
8554                                         }
8555                                 }
8556
8557                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8558                                         if (cfg->verbose_level > 2)
8559                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8560                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8561                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8562                                                   cfg->gshared)) {
8563                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8564                                                 CHECK_CFG_ERROR;
8565                                         }
8566                                 } else {
8567                                         if (cfg->verbose_level > 2)
8568                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8569
8570                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8571                                                 /*
8572                                                  * This is needed since get_method_constrained can't find
8573                                                  * the method in klass representing a type var.
8574                                                  * The type var is guaranteed to be a reference type in this
8575                                                  * case.
8576                                                  */
8577                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8578                                                         g_assert (!cmethod->klass->valuetype);
8579                                         } else {
8580                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8581                                                 CHECK_CFG_ERROR;
8582                                         }
8583                                 }
8584                         }
8585
8586                         if (!dont_verify && !cfg->skip_visibility) {
8587                                 MonoMethod *target_method = cil_method;
8588                                 if (method->is_inflated) {
8589                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8590                                         CHECK_CFG_ERROR;
8591                                 }
8592                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8593                                         !mono_method_can_access_method (method, cil_method))
8594                                         emit_method_access_failure (cfg, method, cil_method);
8595                         }
8596
8597                         if (mono_security_core_clr_enabled ())
8598                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8599
8600                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8601                                 /* MS.NET seems to silently convert this to a callvirt */
8602                                 virtual_ = 1;
8603
8604                         {
8605                                 /*
8606                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8607                                  * converts to a callvirt.
8608                                  *
8609                                  * tests/bug-515884.il is an example of this behavior
8610                                  */
8611                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8612                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8613                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8614                                         virtual_ = 1;
8615                         }
8616
8617                         if (!cmethod->klass->inited)
8618                                 if (!mono_class_init (cmethod->klass))
8619                                         TYPE_LOAD_ERROR (cmethod->klass);
8620
8621                         fsig = mono_method_signature (cmethod);
8622                         if (!fsig)
8623                                 LOAD_ERROR;
8624                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8625                                 mini_class_is_system_array (cmethod->klass)) {
8626                                 array_rank = cmethod->klass->rank;
8627                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8628                                 direct_icall = TRUE;
8629                         } else if (fsig->pinvoke) {
8630                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8631                                 fsig = mono_method_signature (wrapper);
8632                         } else if (constrained_class) {
8633                         } else {
8634                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8635                                 CHECK_CFG_ERROR;
8636                         }
8637
8638                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8639                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8640
8641                         /* See code below */
8642                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8643                                 MonoBasicBlock *tbb;
8644
8645                                 GET_BBLOCK (cfg, tbb, ip + 5);
8646                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8647                                         /*
8648                                          * We want to extend the try block to cover the call, but we can't do it if the
8649                                          * call is made directly since its followed by an exception check.
8650                                          */
8651                                         direct_icall = FALSE;
8652                                 }
8653                         }
8654
8655                         mono_save_token_info (cfg, image, token, cil_method);
8656
8657                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8658                                 need_seq_point = TRUE;
8659
8660                         /* Don't support calls made using type arguments for now */
8661                         /*
8662                           if (cfg->gsharedvt) {
8663                           if (mini_is_gsharedvt_signature (fsig))
8664                           GSHAREDVT_FAILURE (*ip);
8665                           }
8666                         */
8667
8668                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8669                                 g_assert_not_reached ();
8670
8671                         n = fsig->param_count + fsig->hasthis;
8672
8673                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8674                                 UNVERIFIED;
8675
8676                         if (!cfg->gshared)
8677                                 g_assert (!mono_method_check_context_used (cmethod));
8678
8679                         CHECK_STACK (n);
8680
8681                         //g_assert (!virtual_ || fsig->hasthis);
8682
8683                         sp -= n;
8684
8685                         /*
8686                          * We have the `constrained.' prefix opcode.
8687                          */
8688                         if (constrained_class) {
8689                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8690                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8691                                                 /* The 'Own method' case below */
8692                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8693                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8694                                         } else {
8695                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8696                                                 CHECK_CFG_EXCEPTION;
8697                                                 g_assert (ins);
8698                                                 goto call_end;
8699                                         }
8700                                 }
8701
8702                                 if (constrained_partial_call) {
8703                                         gboolean need_box = TRUE;
8704
8705                                         /*
8706                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8707                                          * called method is not known at compile time either. The called method could end up being
8708                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8709                                          * to box the receiver.
8710                                          * A simple solution would be to box always and make a normal virtual call, but that would
8711                                          * be bad performance wise.
8712                                          */
8713                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8714                                                 /*
8715                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8716                                                  */
8717                                                 need_box = FALSE;
8718                                         }
8719
8720                                         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)) {
8721                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8722                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8723                                                 ins->klass = constrained_class;
8724                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8725                                                 CHECK_CFG_EXCEPTION;
8726                                         } else if (need_box) {
8727                                                 MonoInst *box_type;
8728                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8729                                                 MonoInst *nonbox_call;
8730
8731                                                 /*
8732                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8733                                                  * if needed.
8734                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8735                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8736                                                  */
8737                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8738
8739                                                 NEW_BBLOCK (cfg, is_ref_bb);
8740                                                 NEW_BBLOCK (cfg, end_bb);
8741
8742                                                 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);
8743                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8744                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8745
8746                                                 /* Non-ref case */
8747                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8748
8749                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8750
8751                                                 /* Ref case */
8752                                                 MONO_START_BB (cfg, is_ref_bb);
8753                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8754                                                 ins->klass = constrained_class;
8755                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8756                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8757
8758                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8759
8760                                                 MONO_START_BB (cfg, end_bb);
8761                                                 cfg->cbb = end_bb;
8762
8763                                                 nonbox_call->dreg = ins->dreg;
8764                                                 goto call_end;
8765                                         } else {
8766                                                 g_assert (mono_class_is_interface (cmethod->klass));
8767                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8768                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8769                                                 goto call_end;
8770                                         }
8771                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8772                                         /*
8773                                          * The type parameter is instantiated as a valuetype,
8774                                          * but that type doesn't override the method we're
8775                                          * calling, so we need to box `this'.
8776                                          */
8777                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8778                                         ins->klass = constrained_class;
8779                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8780                                         CHECK_CFG_EXCEPTION;
8781                                 } else if (!constrained_class->valuetype) {
8782                                         int dreg = alloc_ireg_ref (cfg);
8783
8784                                         /*
8785                                          * The type parameter is instantiated as a reference
8786                                          * type.  We have a managed pointer on the stack, so
8787                                          * we need to dereference it here.
8788                                          */
8789                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8790                                         ins->type = STACK_OBJ;
8791                                         sp [0] = ins;
8792                                 } else {
8793                                         if (cmethod->klass->valuetype) {
8794                                                 /* Own method */
8795                                         } else {
8796                                                 /* Interface method */
8797                                                 int ioffset, slot;
8798
8799                                                 mono_class_setup_vtable (constrained_class);
8800                                                 CHECK_TYPELOAD (constrained_class);
8801                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8802                                                 if (ioffset == -1)
8803                                                         TYPE_LOAD_ERROR (constrained_class);
8804                                                 slot = mono_method_get_vtable_slot (cmethod);
8805                                                 if (slot == -1)
8806                                                         TYPE_LOAD_ERROR (cmethod->klass);
8807                                                 cmethod = constrained_class->vtable [ioffset + slot];
8808
8809                                                 if (cmethod->klass == mono_defaults.enum_class) {
8810                                                         /* Enum implements some interfaces, so treat this as the first case */
8811                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8812                                                         ins->klass = constrained_class;
8813                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8814                                                         CHECK_CFG_EXCEPTION;
8815                                                 }
8816                                         }
8817                                         virtual_ = 0;
8818                                 }
8819                                 constrained_class = NULL;
8820                         }
8821
8822                         if (check_call_signature (cfg, fsig, sp))
8823                                 UNVERIFIED;
8824
8825                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8826                                 delegate_invoke = TRUE;
8827
8828                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8829                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8830                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8831                                         emit_widen = FALSE;
8832                                 }
8833
8834                                 goto call_end;
8835                         }
8836
8837                         /*
8838                          * If the callee is a shared method, then its static cctor
8839                          * might not get called after the call was patched.
8840                          */
8841                         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)) {
8842                                 emit_class_init (cfg, cmethod->klass);
8843                                 CHECK_TYPELOAD (cmethod->klass);
8844                         }
8845
8846                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8847
8848                         if (cfg->gshared) {
8849                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8850
8851                                 context_used = mini_method_check_context_used (cfg, cmethod);
8852
8853                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8854                                         /* Generic method interface
8855                                            calls are resolved via a
8856                                            helper function and don't
8857                                            need an imt. */
8858                                         if (!cmethod_context || !cmethod_context->method_inst)
8859                                                 pass_imt_from_rgctx = TRUE;
8860                                 }
8861
8862                                 /*
8863                                  * If a shared method calls another
8864                                  * shared method then the caller must
8865                                  * have a generic sharing context
8866                                  * because the magic trampoline
8867                                  * requires it.  FIXME: We shouldn't
8868                                  * have to force the vtable/mrgctx
8869                                  * variable here.  Instead there
8870                                  * should be a flag in the cfg to
8871                                  * request a generic sharing context.
8872                                  */
8873                                 if (context_used &&
8874                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8875                                         mono_get_vtable_var (cfg);
8876                         }
8877
8878                         if (pass_vtable) {
8879                                 if (context_used) {
8880                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8881                                 } else {
8882                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8883
8884                                         CHECK_TYPELOAD (cmethod->klass);
8885                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8886                                 }
8887                         }
8888
8889                         if (pass_mrgctx) {
8890                                 g_assert (!vtable_arg);
8891
8892                                 if (!cfg->compile_aot) {
8893                                         /*
8894                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8895                                          * for type load errors before.
8896                                          */
8897                                         mono_class_setup_vtable (cmethod->klass);
8898                                         CHECK_TYPELOAD (cmethod->klass);
8899                                 }
8900
8901                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8902
8903                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8904                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8905                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8906                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8907                                         if (virtual_)
8908                                                 check_this = TRUE;
8909                                         virtual_ = 0;
8910                                 }
8911                         }
8912
8913                         if (pass_imt_from_rgctx) {
8914                                 g_assert (!pass_vtable);
8915
8916                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8917                                         cmethod, MONO_RGCTX_INFO_METHOD);
8918                         }
8919
8920                         if (check_this)
8921                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8922
8923                         /* Calling virtual generic methods */
8924                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8925                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8926                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8927                             fsig->generic_param_count &&
8928                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8929                                 !cfg->llvm_only) {
8930                                 MonoInst *this_temp, *this_arg_temp, *store;
8931                                 MonoInst *iargs [4];
8932
8933                                 g_assert (fsig->is_inflated);
8934
8935                                 /* Prevent inlining of methods that contain indirect calls */
8936                                 INLINE_FAILURE ("virtual generic call");
8937
8938                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8939                                         GSHAREDVT_FAILURE (*ip);
8940
8941                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8942                                         g_assert (!imt_arg);
8943                                         if (!context_used)
8944                                                 g_assert (cmethod->is_inflated);
8945                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8946                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8947                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8948                                 } else {
8949                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8950                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8951                                         MONO_ADD_INS (cfg->cbb, store);
8952
8953                                         /* FIXME: This should be a managed pointer */
8954                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8955
8956                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8957                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8958                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8959                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8960                                         addr = mono_emit_jit_icall (cfg,
8961                                                                                                 mono_helper_compile_generic_method, iargs);
8962
8963                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8964
8965                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8966                                 }
8967
8968                                 goto call_end;
8969                         }
8970
8971                         /*
8972                          * Implement a workaround for the inherent races involved in locking:
8973                          * Monitor.Enter ()
8974                          * try {
8975                          * } finally {
8976                          *    Monitor.Exit ()
8977                          * }
8978                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8979                          * try block, the Exit () won't be executed, see:
8980                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8981                          * To work around this, we extend such try blocks to include the last x bytes
8982                          * of the Monitor.Enter () call.
8983                          */
8984                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8985                                 MonoBasicBlock *tbb;
8986
8987                                 GET_BBLOCK (cfg, tbb, ip + 5);
8988                                 /*
8989                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8990                                  * from Monitor.Enter like ArgumentNullException.
8991                                  */
8992                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8993                                         /* Mark this bblock as needing to be extended */
8994                                         tbb->extend_try_block = TRUE;
8995                                 }
8996                         }
8997
8998                         /* Conversion to a JIT intrinsic */
8999                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9000                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9001                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9002                                         emit_widen = FALSE;
9003                                 }
9004                                 goto call_end;
9005                         }
9006                         CHECK_CFG_ERROR;
9007
9008                         /* Inlining */
9009                         if ((cfg->opt & MONO_OPT_INLINE) &&
9010                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9011                             mono_method_check_inlining (cfg, cmethod)) {
9012                                 int costs;
9013                                 gboolean always = FALSE;
9014
9015                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9016                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9017                                         /* Prevent inlining of methods that call wrappers */
9018                                         INLINE_FAILURE ("wrapper call");
9019                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9020                                         always = TRUE;
9021                                 }
9022
9023                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9024                                 if (costs) {
9025                                         cfg->real_offset += 5;
9026
9027                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9028                                                 /* *sp is already set by inline_method */
9029                                                 sp++;
9030                                                 push_res = FALSE;
9031                                         }
9032
9033                                         inline_costs += costs;
9034
9035                                         goto call_end;
9036                                 }
9037                         }
9038
9039                         /* Tail recursion elimination */
9040                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9041                                 gboolean has_vtargs = FALSE;
9042                                 int i;
9043
9044                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9045                                 INLINE_FAILURE ("tail call");
9046
9047                                 /* keep it simple */
9048                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9049                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9050                                                 has_vtargs = TRUE;
9051                                 }
9052
9053                                 if (!has_vtargs) {
9054                                         if (need_seq_point) {
9055                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9056                                                 need_seq_point = FALSE;
9057                                         }
9058                                         for (i = 0; i < n; ++i)
9059                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9060                                         MONO_INST_NEW (cfg, ins, OP_BR);
9061                                         MONO_ADD_INS (cfg->cbb, ins);
9062                                         tblock = start_bblock->out_bb [0];
9063                                         link_bblock (cfg, cfg->cbb, tblock);
9064                                         ins->inst_target_bb = tblock;
9065                                         start_new_bblock = 1;
9066
9067                                         /* skip the CEE_RET, too */
9068                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9069                                                 skip_ret = TRUE;
9070                                         push_res = FALSE;
9071                                         goto call_end;
9072                                 }
9073                         }
9074
9075                         inline_costs += 10 * num_calls++;
9076
9077                         /*
9078                          * Synchronized wrappers.
9079                          * Its hard to determine where to replace a method with its synchronized
9080                          * wrapper without causing an infinite recursion. The current solution is
9081                          * to add the synchronized wrapper in the trampolines, and to
9082                          * change the called method to a dummy wrapper, and resolve that wrapper
9083                          * to the real method in mono_jit_compile_method ().
9084                          */
9085                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9086                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9087                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9088                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9089                         }
9090
9091                         /*
9092                          * Making generic calls out of gsharedvt methods.
9093                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9094                          * patching gshared method addresses into a gsharedvt method.
9095                          */
9096                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
9097                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9098                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9099                                 MonoRgctxInfoType info_type;
9100
9101                                 if (virtual_) {
9102                                         //if (mono_class_is_interface (cmethod->klass))
9103                                                 //GSHAREDVT_FAILURE (*ip);
9104                                         // disable for possible remoting calls
9105                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9106                                                 GSHAREDVT_FAILURE (*ip);
9107                                         if (fsig->generic_param_count) {
9108                                                 /* virtual generic call */
9109                                                 g_assert (!imt_arg);
9110                                                 /* Same as the virtual generic case above */
9111                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9112                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9113                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9114                                                 vtable_arg = NULL;
9115                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
9116                                                 /* This can happen when we call a fully instantiated iface method */
9117                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9118                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9119                                                 vtable_arg = NULL;
9120                                         }
9121                                 }
9122
9123                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9124                                         keep_this_alive = sp [0];
9125
9126                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9127                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9128                                 else
9129                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9130                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9131
9132                                 if (cfg->llvm_only) {
9133                                         // FIXME: Avoid initializing vtable_arg
9134                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9135                                 } else {
9136                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9137                                 }
9138                                 goto call_end;
9139                         }
9140
9141                         /* Generic sharing */
9142
9143                         /*
9144                          * Use this if the callee is gsharedvt sharable too, since
9145                          * at runtime we might find an instantiation so the call cannot
9146                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9147                          */
9148                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9149                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9150                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9151                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9152                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9153                                 INLINE_FAILURE ("gshared");
9154
9155                                 g_assert (cfg->gshared && cmethod);
9156                                 g_assert (!addr);
9157
9158                                 /*
9159                                  * We are compiling a call to a
9160                                  * generic method from shared code,
9161                                  * which means that we have to look up
9162                                  * the method in the rgctx and do an
9163                                  * indirect call.
9164                                  */
9165                                 if (fsig->hasthis)
9166                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9167
9168                                 if (cfg->llvm_only) {
9169                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9170                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9171                                         else
9172                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9173                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9174                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9175                                 } else {
9176                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9177                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9178                                 }
9179                                 goto call_end;
9180                         }
9181
9182                         /* Direct calls to icalls */
9183                         if (direct_icall) {
9184                                 MonoMethod *wrapper;
9185                                 int costs;
9186
9187                                 /* Inline the wrapper */
9188                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9189
9190                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9191                                 g_assert (costs > 0);
9192                                 cfg->real_offset += 5;
9193
9194                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9195                                         /* *sp is already set by inline_method */
9196                                         sp++;
9197                                         push_res = FALSE;
9198                                 }
9199
9200                                 inline_costs += costs;
9201
9202                                 goto call_end;
9203                         }
9204
9205                         /* Array methods */
9206                         if (array_rank) {
9207                                 MonoInst *addr;
9208
9209                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9210                                         MonoInst *val = sp [fsig->param_count];
9211
9212                                         if (val->type == STACK_OBJ) {
9213                                                 MonoInst *iargs [2];
9214
9215                                                 iargs [0] = sp [0];
9216                                                 iargs [1] = val;
9217
9218                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9219                                         }
9220
9221                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9222                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9223                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9224                                                 emit_write_barrier (cfg, addr, val);
9225                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9226                                                 GSHAREDVT_FAILURE (*ip);
9227                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9228                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9229
9230                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9231                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9232                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9233                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9234                                         CHECK_TYPELOAD (cmethod->klass);
9235
9236                                         readonly = FALSE;
9237                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9238                                         ins = addr;
9239                                 } else {
9240                                         g_assert_not_reached ();
9241                                 }
9242
9243                                 emit_widen = FALSE;
9244                                 goto call_end;
9245                         }
9246
9247                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9248                         if (ins)
9249                                 goto call_end;
9250
9251                         /* Tail prefix / tail call optimization */
9252
9253                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9254                         /* FIXME: runtime generic context pointer for jumps? */
9255                         /* FIXME: handle this for generic sharing eventually */
9256                         if ((ins_flag & MONO_INST_TAILCALL) &&
9257                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9258                                 supported_tail_call = TRUE;
9259
9260                         if (supported_tail_call) {
9261                                 MonoCallInst *call;
9262
9263                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9264                                 INLINE_FAILURE ("tail call");
9265
9266                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9267
9268                                 if (cfg->backend->have_op_tail_call) {
9269                                         /* Handle tail calls similarly to normal calls */
9270                                         tail_call = TRUE;
9271                                 } else {
9272                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9273
9274                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9275                                         call->tail_call = TRUE;
9276                                         call->method = cmethod;
9277                                         call->signature = mono_method_signature (cmethod);
9278
9279                                         /*
9280                                          * We implement tail calls by storing the actual arguments into the
9281                                          * argument variables, then emitting a CEE_JMP.
9282                                          */
9283                                         for (i = 0; i < n; ++i) {
9284                                                 /* Prevent argument from being register allocated */
9285                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9286                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9287                                         }
9288                                         ins = (MonoInst*)call;
9289                                         ins->inst_p0 = cmethod;
9290                                         ins->inst_p1 = arg_array [0];
9291                                         MONO_ADD_INS (cfg->cbb, ins);
9292                                         link_bblock (cfg, cfg->cbb, end_bblock);
9293                                         start_new_bblock = 1;
9294
9295                                         // FIXME: Eliminate unreachable epilogs
9296
9297                                         /*
9298                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9299                                          * only reachable from this call.
9300                                          */
9301                                         GET_BBLOCK (cfg, tblock, ip + 5);
9302                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9303                                                 skip_ret = TRUE;
9304                                         push_res = FALSE;
9305
9306                                         goto call_end;
9307                                 }
9308                         }
9309
9310                         /*
9311                          * Virtual calls in llvm-only mode.
9312                          */
9313                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9314                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9315                                 goto call_end;
9316                         }
9317
9318                         /* Common call */
9319                         if (!(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9320                                 INLINE_FAILURE ("call");
9321                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9322                                                                                           imt_arg, vtable_arg);
9323
9324                         if (tail_call && !cfg->llvm_only) {
9325                                 link_bblock (cfg, cfg->cbb, end_bblock);
9326                                 start_new_bblock = 1;
9327
9328                                 // FIXME: Eliminate unreachable epilogs
9329
9330                                 /*
9331                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9332                                  * only reachable from this call.
9333                                  */
9334                                 GET_BBLOCK (cfg, tblock, ip + 5);
9335                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9336                                         skip_ret = TRUE;
9337                                 push_res = FALSE;
9338                         }
9339
9340                         call_end:
9341
9342                         /* End of call, INS should contain the result of the call, if any */
9343
9344                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9345                                 g_assert (ins);
9346                                 if (emit_widen)
9347                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9348                                 else
9349                                         *sp++ = ins;
9350                         }
9351
9352                         if (keep_this_alive) {
9353                                 MonoInst *dummy_use;
9354
9355                                 /* See mono_emit_method_call_full () */
9356                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9357                         }
9358
9359                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9360                                 /*
9361                                  * Clang can convert these calls to tail calls which screw up the stack
9362                                  * walk. This happens even when the -fno-optimize-sibling-calls
9363                                  * option is passed to clang.
9364                                  * Work around this by emitting a dummy call.
9365                                  */
9366                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9367                         }
9368
9369                         CHECK_CFG_EXCEPTION;
9370
9371                         ip += 5;
9372                         if (skip_ret) {
9373                                 g_assert (*ip == CEE_RET);
9374                                 ip += 1;
9375                         }
9376                         ins_flag = 0;
9377                         constrained_class = NULL;
9378                         if (need_seq_point)
9379                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9380                         break;
9381                 }
9382                 case CEE_RET:
9383                         if (cfg->method != method) {
9384                                 /* return from inlined method */
9385                                 /*
9386                                  * If in_count == 0, that means the ret is unreachable due to
9387                                  * being preceeded by a throw. In that case, inline_method () will
9388                                  * handle setting the return value
9389                                  * (test case: test_0_inline_throw ()).
9390                                  */
9391                                 if (return_var && cfg->cbb->in_count) {
9392                                         MonoType *ret_type = mono_method_signature (method)->ret;
9393
9394                                         MonoInst *store;
9395                                         CHECK_STACK (1);
9396                                         --sp;
9397
9398                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9399                                                 UNVERIFIED;
9400
9401                                         //g_assert (returnvar != -1);
9402                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9403                                         cfg->ret_var_set = TRUE;
9404                                 }
9405                         } else {
9406                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9407
9408                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9409                                         emit_pop_lmf (cfg);
9410
9411                                 if (cfg->ret) {
9412                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9413
9414                                         if (seq_points && !sym_seq_points) {
9415                                                 /*
9416                                                  * Place a seq point here too even through the IL stack is not
9417                                                  * empty, so a step over on
9418                                                  * call <FOO>
9419                                                  * ret
9420                                                  * will work correctly.
9421                                                  */
9422                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9423                                                 MONO_ADD_INS (cfg->cbb, ins);
9424                                         }
9425
9426                                         g_assert (!return_var);
9427                                         CHECK_STACK (1);
9428                                         --sp;
9429
9430                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9431                                                 UNVERIFIED;
9432
9433                                         emit_setret (cfg, *sp);
9434                                 }
9435                         }
9436                         if (sp != stack_start)
9437                                 UNVERIFIED;
9438                         MONO_INST_NEW (cfg, ins, OP_BR);
9439                         ip++;
9440                         ins->inst_target_bb = end_bblock;
9441                         MONO_ADD_INS (cfg->cbb, ins);
9442                         link_bblock (cfg, cfg->cbb, end_bblock);
9443                         start_new_bblock = 1;
9444                         break;
9445                 case CEE_BR_S:
9446                         CHECK_OPSIZE (2);
9447                         MONO_INST_NEW (cfg, ins, OP_BR);
9448                         ip++;
9449                         target = ip + 1 + (signed char)(*ip);
9450                         ++ip;
9451                         GET_BBLOCK (cfg, tblock, target);
9452                         link_bblock (cfg, cfg->cbb, tblock);
9453                         ins->inst_target_bb = tblock;
9454                         if (sp != stack_start) {
9455                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9456                                 sp = stack_start;
9457                                 CHECK_UNVERIFIABLE (cfg);
9458                         }
9459                         MONO_ADD_INS (cfg->cbb, ins);
9460                         start_new_bblock = 1;
9461                         inline_costs += BRANCH_COST;
9462                         break;
9463                 case CEE_BEQ_S:
9464                 case CEE_BGE_S:
9465                 case CEE_BGT_S:
9466                 case CEE_BLE_S:
9467                 case CEE_BLT_S:
9468                 case CEE_BNE_UN_S:
9469                 case CEE_BGE_UN_S:
9470                 case CEE_BGT_UN_S:
9471                 case CEE_BLE_UN_S:
9472                 case CEE_BLT_UN_S:
9473                         CHECK_OPSIZE (2);
9474                         CHECK_STACK (2);
9475                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9476                         ip++;
9477                         target = ip + 1 + *(signed char*)ip;
9478                         ip++;
9479
9480                         ADD_BINCOND (NULL);
9481
9482                         sp = stack_start;
9483                         inline_costs += BRANCH_COST;
9484                         break;
9485                 case CEE_BR:
9486                         CHECK_OPSIZE (5);
9487                         MONO_INST_NEW (cfg, ins, OP_BR);
9488                         ip++;
9489
9490                         target = ip + 4 + (gint32)read32(ip);
9491                         ip += 4;
9492                         GET_BBLOCK (cfg, tblock, target);
9493                         link_bblock (cfg, cfg->cbb, tblock);
9494                         ins->inst_target_bb = tblock;
9495                         if (sp != stack_start) {
9496                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9497                                 sp = stack_start;
9498                                 CHECK_UNVERIFIABLE (cfg);
9499                         }
9500
9501                         MONO_ADD_INS (cfg->cbb, ins);
9502
9503                         start_new_bblock = 1;
9504                         inline_costs += BRANCH_COST;
9505                         break;
9506                 case CEE_BRFALSE_S:
9507                 case CEE_BRTRUE_S:
9508                 case CEE_BRFALSE:
9509                 case CEE_BRTRUE: {
9510                         MonoInst *cmp;
9511                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9512                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9513                         guint32 opsize = is_short ? 1 : 4;
9514
9515                         CHECK_OPSIZE (opsize);
9516                         CHECK_STACK (1);
9517                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9518                                 UNVERIFIED;
9519                         ip ++;
9520                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9521                         ip += opsize;
9522
9523                         sp--;
9524
9525                         GET_BBLOCK (cfg, tblock, target);
9526                         link_bblock (cfg, cfg->cbb, tblock);
9527                         GET_BBLOCK (cfg, tblock, ip);
9528                         link_bblock (cfg, cfg->cbb, tblock);
9529
9530                         if (sp != stack_start) {
9531                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9532                                 CHECK_UNVERIFIABLE (cfg);
9533                         }
9534
9535                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9536                         cmp->sreg1 = sp [0]->dreg;
9537                         type_from_op (cfg, cmp, sp [0], NULL);
9538                         CHECK_TYPE (cmp);
9539
9540 #if SIZEOF_REGISTER == 4
9541                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9542                                 /* Convert it to OP_LCOMPARE */
9543                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9544                                 ins->type = STACK_I8;
9545                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9546                                 ins->inst_l = 0;
9547                                 MONO_ADD_INS (cfg->cbb, ins);
9548                                 cmp->opcode = OP_LCOMPARE;
9549                                 cmp->sreg2 = ins->dreg;
9550                         }
9551 #endif
9552                         MONO_ADD_INS (cfg->cbb, cmp);
9553
9554                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9555                         type_from_op (cfg, ins, sp [0], NULL);
9556                         MONO_ADD_INS (cfg->cbb, ins);
9557                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9558                         GET_BBLOCK (cfg, tblock, target);
9559                         ins->inst_true_bb = tblock;
9560                         GET_BBLOCK (cfg, tblock, ip);
9561                         ins->inst_false_bb = tblock;
9562                         start_new_bblock = 2;
9563
9564                         sp = stack_start;
9565                         inline_costs += BRANCH_COST;
9566                         break;
9567                 }
9568                 case CEE_BEQ:
9569                 case CEE_BGE:
9570                 case CEE_BGT:
9571                 case CEE_BLE:
9572                 case CEE_BLT:
9573                 case CEE_BNE_UN:
9574                 case CEE_BGE_UN:
9575                 case CEE_BGT_UN:
9576                 case CEE_BLE_UN:
9577                 case CEE_BLT_UN:
9578                         CHECK_OPSIZE (5);
9579                         CHECK_STACK (2);
9580                         MONO_INST_NEW (cfg, ins, *ip);
9581                         ip++;
9582                         target = ip + 4 + (gint32)read32(ip);
9583                         ip += 4;
9584
9585                         ADD_BINCOND (NULL);
9586
9587                         sp = stack_start;
9588                         inline_costs += BRANCH_COST;
9589                         break;
9590                 case CEE_SWITCH: {
9591                         MonoInst *src1;
9592                         MonoBasicBlock **targets;
9593                         MonoBasicBlock *default_bblock;
9594                         MonoJumpInfoBBTable *table;
9595                         int offset_reg = alloc_preg (cfg);
9596                         int target_reg = alloc_preg (cfg);
9597                         int table_reg = alloc_preg (cfg);
9598                         int sum_reg = alloc_preg (cfg);
9599                         gboolean use_op_switch;
9600
9601                         CHECK_OPSIZE (5);
9602                         CHECK_STACK (1);
9603                         n = read32 (ip + 1);
9604                         --sp;
9605                         src1 = sp [0];
9606                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9607                                 UNVERIFIED;
9608
9609                         ip += 5;
9610                         CHECK_OPSIZE (n * sizeof (guint32));
9611                         target = ip + n * sizeof (guint32);
9612
9613                         GET_BBLOCK (cfg, default_bblock, target);
9614                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9615
9616                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9617                         for (i = 0; i < n; ++i) {
9618                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9619                                 targets [i] = tblock;
9620                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9621                                 ip += 4;
9622                         }
9623
9624                         if (sp != stack_start) {
9625                                 /*
9626                                  * Link the current bb with the targets as well, so handle_stack_args
9627                                  * will set their in_stack correctly.
9628                                  */
9629                                 link_bblock (cfg, cfg->cbb, default_bblock);
9630                                 for (i = 0; i < n; ++i)
9631                                         link_bblock (cfg, cfg->cbb, targets [i]);
9632
9633                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9634                                 sp = stack_start;
9635                                 CHECK_UNVERIFIABLE (cfg);
9636
9637                                 /* Undo the links */
9638                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9639                                 for (i = 0; i < n; ++i)
9640                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9641                         }
9642
9643                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9644                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9645
9646                         for (i = 0; i < n; ++i)
9647                                 link_bblock (cfg, cfg->cbb, targets [i]);
9648
9649                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9650                         table->table = targets;
9651                         table->table_size = n;
9652
9653                         use_op_switch = FALSE;
9654 #ifdef TARGET_ARM
9655                         /* ARM implements SWITCH statements differently */
9656                         /* FIXME: Make it use the generic implementation */
9657                         if (!cfg->compile_aot)
9658                                 use_op_switch = TRUE;
9659 #endif
9660
9661                         if (COMPILE_LLVM (cfg))
9662                                 use_op_switch = TRUE;
9663
9664                         cfg->cbb->has_jump_table = 1;
9665
9666                         if (use_op_switch) {
9667                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9668                                 ins->sreg1 = src1->dreg;
9669                                 ins->inst_p0 = table;
9670                                 ins->inst_many_bb = targets;
9671                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9672                                 MONO_ADD_INS (cfg->cbb, ins);
9673                         } else {
9674                                 if (sizeof (gpointer) == 8)
9675                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9676                                 else
9677                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9678
9679 #if SIZEOF_REGISTER == 8
9680                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9681                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9682 #endif
9683
9684                                 if (cfg->compile_aot) {
9685                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9686                                 } else {
9687                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9688                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9689                                         ins->inst_p0 = table;
9690                                         ins->dreg = table_reg;
9691                                         MONO_ADD_INS (cfg->cbb, ins);
9692                                 }
9693
9694                                 /* FIXME: Use load_memindex */
9695                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9696                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9697                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9698                         }
9699                         start_new_bblock = 1;
9700                         inline_costs += (BRANCH_COST * 2);
9701                         break;
9702                 }
9703                 case CEE_LDIND_I1:
9704                 case CEE_LDIND_U1:
9705                 case CEE_LDIND_I2:
9706                 case CEE_LDIND_U2:
9707                 case CEE_LDIND_I4:
9708                 case CEE_LDIND_U4:
9709                 case CEE_LDIND_I8:
9710                 case CEE_LDIND_I:
9711                 case CEE_LDIND_R4:
9712                 case CEE_LDIND_R8:
9713                 case CEE_LDIND_REF:
9714                         CHECK_STACK (1);
9715                         --sp;
9716
9717                         switch (*ip) {
9718                         case CEE_LDIND_R4:
9719                         case CEE_LDIND_R8:
9720                                 dreg = alloc_freg (cfg);
9721                                 break;
9722                         case CEE_LDIND_I8:
9723                                 dreg = alloc_lreg (cfg);
9724                                 break;
9725                         case CEE_LDIND_REF:
9726                                 dreg = alloc_ireg_ref (cfg);
9727                                 break;
9728                         default:
9729                                 dreg = alloc_preg (cfg);
9730                         }
9731
9732                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
9733                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
9734                         if (*ip == CEE_LDIND_R4)
9735                                 ins->type = cfg->r4_stack_type;
9736                         ins->flags |= ins_flag;
9737                         MONO_ADD_INS (cfg->cbb, ins);
9738                         *sp++ = ins;
9739                         if (ins_flag & MONO_INST_VOLATILE) {
9740                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9741                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9742                         }
9743                         ins_flag = 0;
9744                         ++ip;
9745                         break;
9746                 case CEE_STIND_REF:
9747                 case CEE_STIND_I1:
9748                 case CEE_STIND_I2:
9749                 case CEE_STIND_I4:
9750                 case CEE_STIND_I8:
9751                 case CEE_STIND_R4:
9752                 case CEE_STIND_R8:
9753                 case CEE_STIND_I:
9754                         CHECK_STACK (2);
9755                         sp -= 2;
9756
9757                         if (ins_flag & MONO_INST_VOLATILE) {
9758                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9759                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9760                         }
9761
9762                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9763                         ins->flags |= ins_flag;
9764                         ins_flag = 0;
9765
9766                         MONO_ADD_INS (cfg->cbb, ins);
9767
9768                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9769                                 emit_write_barrier (cfg, sp [0], sp [1]);
9770
9771                         inline_costs += 1;
9772                         ++ip;
9773                         break;
9774
9775                 case CEE_MUL:
9776                         CHECK_STACK (2);
9777
9778                         MONO_INST_NEW (cfg, ins, (*ip));
9779                         sp -= 2;
9780                         ins->sreg1 = sp [0]->dreg;
9781                         ins->sreg2 = sp [1]->dreg;
9782                         type_from_op (cfg, ins, sp [0], sp [1]);
9783                         CHECK_TYPE (ins);
9784                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9785
9786                         /* Use the immediate opcodes if possible */
9787                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9788                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9789                                 if (imm_opcode != -1) {
9790                                         ins->opcode = imm_opcode;
9791                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9792                                         ins->sreg2 = -1;
9793
9794                                         NULLIFY_INS (sp [1]);
9795                                 }
9796                         }
9797
9798                         MONO_ADD_INS ((cfg)->cbb, (ins));
9799
9800                         *sp++ = mono_decompose_opcode (cfg, ins);
9801                         ip++;
9802                         break;
9803                 case CEE_ADD:
9804                 case CEE_SUB:
9805                 case CEE_DIV:
9806                 case CEE_DIV_UN:
9807                 case CEE_REM:
9808                 case CEE_REM_UN:
9809                 case CEE_AND:
9810                 case CEE_OR:
9811                 case CEE_XOR:
9812                 case CEE_SHL:
9813                 case CEE_SHR:
9814                 case CEE_SHR_UN:
9815                         CHECK_STACK (2);
9816
9817                         MONO_INST_NEW (cfg, ins, (*ip));
9818                         sp -= 2;
9819                         ins->sreg1 = sp [0]->dreg;
9820                         ins->sreg2 = sp [1]->dreg;
9821                         type_from_op (cfg, ins, sp [0], sp [1]);
9822                         CHECK_TYPE (ins);
9823                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9824                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9825
9826                         /* FIXME: Pass opcode to is_inst_imm */
9827
9828                         /* Use the immediate opcodes if possible */
9829                         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)) {
9830                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9831                                 if (imm_opcode != -1) {
9832                                         ins->opcode = imm_opcode;
9833                                         if (sp [1]->opcode == OP_I8CONST) {
9834 #if SIZEOF_REGISTER == 8
9835                                                 ins->inst_imm = sp [1]->inst_l;
9836 #else
9837                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9838                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9839 #endif
9840                                         }
9841                                         else
9842                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9843                                         ins->sreg2 = -1;
9844
9845                                         /* Might be followed by an instruction added by add_widen_op */
9846                                         if (sp [1]->next == NULL)
9847                                                 NULLIFY_INS (sp [1]);
9848                                 }
9849                         }
9850                         MONO_ADD_INS ((cfg)->cbb, (ins));
9851
9852                         *sp++ = mono_decompose_opcode (cfg, ins);
9853                         ip++;
9854                         break;
9855                 case CEE_NEG:
9856                 case CEE_NOT:
9857                 case CEE_CONV_I1:
9858                 case CEE_CONV_I2:
9859                 case CEE_CONV_I4:
9860                 case CEE_CONV_R4:
9861                 case CEE_CONV_R8:
9862                 case CEE_CONV_U4:
9863                 case CEE_CONV_I8:
9864                 case CEE_CONV_U8:
9865                 case CEE_CONV_OVF_I8:
9866                 case CEE_CONV_OVF_U8:
9867                 case CEE_CONV_R_UN:
9868                         CHECK_STACK (1);
9869
9870                         /* Special case this earlier so we have long constants in the IR */
9871                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9872                                 int data = sp [-1]->inst_c0;
9873                                 sp [-1]->opcode = OP_I8CONST;
9874                                 sp [-1]->type = STACK_I8;
9875 #if SIZEOF_REGISTER == 8
9876                                 if ((*ip) == CEE_CONV_U8)
9877                                         sp [-1]->inst_c0 = (guint32)data;
9878                                 else
9879                                         sp [-1]->inst_c0 = data;
9880 #else
9881                                 sp [-1]->inst_ls_word = data;
9882                                 if ((*ip) == CEE_CONV_U8)
9883                                         sp [-1]->inst_ms_word = 0;
9884                                 else
9885                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9886 #endif
9887                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9888                         }
9889                         else {
9890                                 ADD_UNOP (*ip);
9891                         }
9892                         ip++;
9893                         break;
9894                 case CEE_CONV_OVF_I4:
9895                 case CEE_CONV_OVF_I1:
9896                 case CEE_CONV_OVF_I2:
9897                 case CEE_CONV_OVF_I:
9898                 case CEE_CONV_OVF_U:
9899                         CHECK_STACK (1);
9900
9901                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9902                                 ADD_UNOP (CEE_CONV_OVF_I8);
9903                                 ADD_UNOP (*ip);
9904                         } else {
9905                                 ADD_UNOP (*ip);
9906                         }
9907                         ip++;
9908                         break;
9909                 case CEE_CONV_OVF_U1:
9910                 case CEE_CONV_OVF_U2:
9911                 case CEE_CONV_OVF_U4:
9912                         CHECK_STACK (1);
9913
9914                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9915                                 ADD_UNOP (CEE_CONV_OVF_U8);
9916                                 ADD_UNOP (*ip);
9917                         } else {
9918                                 ADD_UNOP (*ip);
9919                         }
9920                         ip++;
9921                         break;
9922                 case CEE_CONV_OVF_I1_UN:
9923                 case CEE_CONV_OVF_I2_UN:
9924                 case CEE_CONV_OVF_I4_UN:
9925                 case CEE_CONV_OVF_I8_UN:
9926                 case CEE_CONV_OVF_U1_UN:
9927                 case CEE_CONV_OVF_U2_UN:
9928                 case CEE_CONV_OVF_U4_UN:
9929                 case CEE_CONV_OVF_U8_UN:
9930                 case CEE_CONV_OVF_I_UN:
9931                 case CEE_CONV_OVF_U_UN:
9932                 case CEE_CONV_U2:
9933                 case CEE_CONV_U1:
9934                 case CEE_CONV_I:
9935                 case CEE_CONV_U:
9936                         CHECK_STACK (1);
9937                         ADD_UNOP (*ip);
9938                         CHECK_CFG_EXCEPTION;
9939                         ip++;
9940                         break;
9941                 case CEE_ADD_OVF:
9942                 case CEE_ADD_OVF_UN:
9943                 case CEE_MUL_OVF:
9944                 case CEE_MUL_OVF_UN:
9945                 case CEE_SUB_OVF:
9946                 case CEE_SUB_OVF_UN:
9947                         CHECK_STACK (2);
9948                         ADD_BINOP (*ip);
9949                         ip++;
9950                         break;
9951                 case CEE_CPOBJ:
9952                         GSHAREDVT_FAILURE (*ip);
9953                         CHECK_OPSIZE (5);
9954                         CHECK_STACK (2);
9955                         token = read32 (ip + 1);
9956                         klass = mini_get_class (method, token, generic_context);
9957                         CHECK_TYPELOAD (klass);
9958                         sp -= 2;
9959                         if (generic_class_is_reference_type (cfg, klass)) {
9960                                 MonoInst *store, *load;
9961                                 int dreg = alloc_ireg_ref (cfg);
9962
9963                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
9964                                 load->flags |= ins_flag;
9965                                 MONO_ADD_INS (cfg->cbb, load);
9966
9967                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
9968                                 store->flags |= ins_flag;
9969                                 MONO_ADD_INS (cfg->cbb, store);
9970
9971                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
9972                                         emit_write_barrier (cfg, sp [0], sp [1]);
9973                         } else {
9974                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
9975                         }
9976                         ins_flag = 0;
9977                         ip += 5;
9978                         break;
9979                 case CEE_LDOBJ: {
9980                         int loc_index = -1;
9981                         int stloc_len = 0;
9982
9983                         CHECK_OPSIZE (5);
9984                         CHECK_STACK (1);
9985                         --sp;
9986                         token = read32 (ip + 1);
9987                         klass = mini_get_class (method, token, generic_context);
9988                         CHECK_TYPELOAD (klass);
9989
9990                         /* Optimize the common ldobj+stloc combination */
9991                         switch (ip [5]) {
9992                         case CEE_STLOC_S:
9993                                 loc_index = ip [6];
9994                                 stloc_len = 2;
9995                                 break;
9996                         case CEE_STLOC_0:
9997                         case CEE_STLOC_1:
9998                         case CEE_STLOC_2:
9999                         case CEE_STLOC_3:
10000                                 loc_index = ip [5] - CEE_STLOC_0;
10001                                 stloc_len = 1;
10002                                 break;
10003                         default:
10004                                 break;
10005                         }
10006
10007                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10008                                 CHECK_LOCAL (loc_index);
10009
10010                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10011                                 ins->dreg = cfg->locals [loc_index]->dreg;
10012                                 ins->flags |= ins_flag;
10013                                 ip += 5;
10014                                 ip += stloc_len;
10015                                 if (ins_flag & MONO_INST_VOLATILE) {
10016                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10017                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10018                                 }
10019                                 ins_flag = 0;
10020                                 break;
10021                         }
10022
10023                         /* Optimize the ldobj+stobj combination */
10024                         /* The reference case ends up being a load+store anyway */
10025                         /* Skip this if the operation is volatile. */
10026                         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)) {
10027                                 CHECK_STACK (1);
10028
10029                                 sp --;
10030
10031                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10032
10033                                 ip += 5 + 5;
10034                                 ins_flag = 0;
10035                                 break;
10036                         }
10037
10038                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10039                         ins->flags |= ins_flag;
10040                         *sp++ = ins;
10041
10042                         if (ins_flag & MONO_INST_VOLATILE) {
10043                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10044                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10045                         }
10046
10047                         ip += 5;
10048                         ins_flag = 0;
10049                         inline_costs += 1;
10050                         break;
10051                 }
10052                 case CEE_LDSTR:
10053                         CHECK_STACK_OVF (1);
10054                         CHECK_OPSIZE (5);
10055                         n = read32 (ip + 1);
10056
10057                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10058                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10059                                 ins->type = STACK_OBJ;
10060                                 *sp = ins;
10061                         }
10062                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10063                                 MonoInst *iargs [1];
10064                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10065
10066                                 if (cfg->compile_aot)
10067                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10068                                 else
10069                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10070                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10071                         } else {
10072                                 if (cfg->opt & MONO_OPT_SHARED) {
10073                                         MonoInst *iargs [3];
10074
10075                                         if (cfg->compile_aot) {
10076                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10077                                         }
10078                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10079                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10080                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10081                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10082                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10083                                         CHECK_CFG_ERROR;
10084                                 } else {
10085                                         if (cfg->cbb->out_of_line) {
10086                                                 MonoInst *iargs [2];
10087
10088                                                 if (image == mono_defaults.corlib) {
10089                                                         /*
10090                                                          * Avoid relocations in AOT and save some space by using a
10091                                                          * version of helper_ldstr specialized to mscorlib.
10092                                                          */
10093                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10094                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10095                                                 } else {
10096                                                         /* Avoid creating the string object */
10097                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10098                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10099                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10100                                                 }
10101                                         }
10102                                         else
10103                                         if (cfg->compile_aot) {
10104                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10105                                                 *sp = ins;
10106                                                 MONO_ADD_INS (cfg->cbb, ins);
10107                                         }
10108                                         else {
10109                                                 NEW_PCONST (cfg, ins, NULL);
10110                                                 ins->type = STACK_OBJ;
10111                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10112                                                 CHECK_CFG_ERROR;
10113
10114                                                 if (!ins->inst_p0)
10115                                                         OUT_OF_MEMORY_FAILURE;
10116
10117                                                 *sp = ins;
10118                                                 MONO_ADD_INS (cfg->cbb, ins);
10119                                         }
10120                                 }
10121                         }
10122
10123                         sp++;
10124                         ip += 5;
10125                         break;
10126                 case CEE_NEWOBJ: {
10127                         MonoInst *iargs [2];
10128                         MonoMethodSignature *fsig;
10129                         MonoInst this_ins;
10130                         MonoInst *alloc;
10131                         MonoInst *vtable_arg = NULL;
10132
10133                         CHECK_OPSIZE (5);
10134                         token = read32 (ip + 1);
10135                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10136                         CHECK_CFG_ERROR;
10137
10138                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10139                         CHECK_CFG_ERROR;
10140
10141                         mono_save_token_info (cfg, image, token, cmethod);
10142
10143                         if (!mono_class_init (cmethod->klass))
10144                                 TYPE_LOAD_ERROR (cmethod->klass);
10145
10146                         context_used = mini_method_check_context_used (cfg, cmethod);
10147
10148                         if (mono_security_core_clr_enabled ())
10149                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10150
10151                         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)) {
10152                                 emit_class_init (cfg, cmethod->klass);
10153                                 CHECK_TYPELOAD (cmethod->klass);
10154                         }
10155
10156                         /*
10157                         if (cfg->gsharedvt) {
10158                                 if (mini_is_gsharedvt_variable_signature (sig))
10159                                         GSHAREDVT_FAILURE (*ip);
10160                         }
10161                         */
10162
10163                         n = fsig->param_count;
10164                         CHECK_STACK (n);
10165
10166                         /*
10167                          * Generate smaller code for the common newobj <exception> instruction in
10168                          * argument checking code.
10169                          */
10170                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10171                                 is_exception_class (cmethod->klass) && n <= 2 &&
10172                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10173                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10174                                 MonoInst *iargs [3];
10175
10176                                 sp -= n;
10177
10178                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10179                                 switch (n) {
10180                                 case 0:
10181                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10182                                         break;
10183                                 case 1:
10184                                         iargs [1] = sp [0];
10185                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10186                                         break;
10187                                 case 2:
10188                                         iargs [1] = sp [0];
10189                                         iargs [2] = sp [1];
10190                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10191                                         break;
10192                                 default:
10193                                         g_assert_not_reached ();
10194                                 }
10195
10196                                 ip += 5;
10197                                 inline_costs += 5;
10198                                 break;
10199                         }
10200
10201                         /* move the args to allow room for 'this' in the first position */
10202                         while (n--) {
10203                                 --sp;
10204                                 sp [1] = sp [0];
10205                         }
10206
10207                         /* check_call_signature () requires sp[0] to be set */
10208                         this_ins.type = STACK_OBJ;
10209                         sp [0] = &this_ins;
10210                         if (check_call_signature (cfg, fsig, sp))
10211                                 UNVERIFIED;
10212
10213                         iargs [0] = NULL;
10214
10215                         if (mini_class_is_system_array (cmethod->klass)) {
10216                                 *sp = emit_get_rgctx_method (cfg, context_used,
10217                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10218
10219                                 /* Avoid varargs in the common case */
10220                                 if (fsig->param_count == 1)
10221                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10222                                 else if (fsig->param_count == 2)
10223                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10224                                 else if (fsig->param_count == 3)
10225                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10226                                 else if (fsig->param_count == 4)
10227                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10228                                 else
10229                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10230                         } else if (cmethod->string_ctor) {
10231                                 g_assert (!context_used);
10232                                 g_assert (!vtable_arg);
10233                                 /* we simply pass a null pointer */
10234                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10235                                 /* now call the string ctor */
10236                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10237                         } else {
10238                                 if (cmethod->klass->valuetype) {
10239                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10240                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10241                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10242
10243                                         alloc = NULL;
10244
10245                                         /*
10246                                          * The code generated by mini_emit_virtual_call () expects
10247                                          * iargs [0] to be a boxed instance, but luckily the vcall
10248                                          * will be transformed into a normal call there.
10249                                          */
10250                                 } else if (context_used) {
10251                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10252                                         *sp = alloc;
10253                                 } else {
10254                                         MonoVTable *vtable = NULL;
10255
10256                                         if (!cfg->compile_aot)
10257                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10258                                         CHECK_TYPELOAD (cmethod->klass);
10259
10260                                         /*
10261                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10262                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10263                                          * As a workaround, we call class cctors before allocating objects.
10264                                          */
10265                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10266                                                 emit_class_init (cfg, cmethod->klass);
10267                                                 if (cfg->verbose_level > 2)
10268                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10269                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10270                                         }
10271
10272                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10273                                         *sp = alloc;
10274                                 }
10275                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10276
10277                                 if (alloc)
10278                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10279
10280                                 /* Now call the actual ctor */
10281                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10282                                 CHECK_CFG_EXCEPTION;
10283                         }
10284
10285                         if (alloc == NULL) {
10286                                 /* Valuetype */
10287                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10288                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10289                                 *sp++= ins;
10290                         } else {
10291                                 *sp++ = alloc;
10292                         }
10293
10294                         ip += 5;
10295                         inline_costs += 5;
10296                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10297                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10298                         break;
10299                 }
10300                 case CEE_CASTCLASS:
10301                 case CEE_ISINST: {
10302                         CHECK_STACK (1);
10303                         --sp;
10304                         CHECK_OPSIZE (5);
10305                         token = read32 (ip + 1);
10306                         klass = mini_get_class (method, token, generic_context);
10307                         CHECK_TYPELOAD (klass);
10308                         if (sp [0]->type != STACK_OBJ)
10309                                 UNVERIFIED;
10310
10311                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10312                         ins->dreg = alloc_preg (cfg);
10313                         ins->sreg1 = (*sp)->dreg;
10314                         ins->klass = klass;
10315                         ins->type = STACK_OBJ;
10316                         MONO_ADD_INS (cfg->cbb, ins);
10317
10318                         CHECK_CFG_EXCEPTION;
10319                         *sp++ = ins;
10320                         ip += 5;
10321
10322                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10323                         break;
10324                 }
10325                 case CEE_UNBOX_ANY: {
10326                         MonoInst *res, *addr;
10327
10328                         CHECK_STACK (1);
10329                         --sp;
10330                         CHECK_OPSIZE (5);
10331                         token = read32 (ip + 1);
10332                         klass = mini_get_class (method, token, generic_context);
10333                         CHECK_TYPELOAD (klass);
10334
10335                         mono_save_token_info (cfg, image, token, klass);
10336
10337                         context_used = mini_class_check_context_used (cfg, klass);
10338
10339                         if (mini_is_gsharedvt_klass (klass)) {
10340                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10341                                 inline_costs += 2;
10342                         } else if (generic_class_is_reference_type (cfg, klass)) {
10343                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10344                                         EMIT_NEW_PCONST (cfg, res, NULL);
10345                                         res->type = STACK_OBJ;
10346                                 } else {
10347                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10348                                         res->dreg = alloc_preg (cfg);
10349                                         res->sreg1 = (*sp)->dreg;
10350                                         res->klass = klass;
10351                                         res->type = STACK_OBJ;
10352                                         MONO_ADD_INS (cfg->cbb, res);
10353                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10354                                 }
10355                         } else if (mono_class_is_nullable (klass)) {
10356                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10357                         } else {
10358                                 addr = handle_unbox (cfg, klass, sp, context_used);
10359                                 /* LDOBJ */
10360                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10361                                 res = ins;
10362                                 inline_costs += 2;
10363                         }
10364
10365                         *sp ++ = res;
10366                         ip += 5;
10367                         break;
10368                 }
10369                 case CEE_BOX: {
10370                         MonoInst *val;
10371                         MonoClass *enum_class;
10372                         MonoMethod *has_flag;
10373
10374                         CHECK_STACK (1);
10375                         --sp;
10376                         val = *sp;
10377                         CHECK_OPSIZE (5);
10378                         token = read32 (ip + 1);
10379                         klass = mini_get_class (method, token, generic_context);
10380                         CHECK_TYPELOAD (klass);
10381
10382                         mono_save_token_info (cfg, image, token, klass);
10383
10384                         context_used = mini_class_check_context_used (cfg, klass);
10385
10386                         if (generic_class_is_reference_type (cfg, klass)) {
10387                                 *sp++ = val;
10388                                 ip += 5;
10389                                 break;
10390                         }
10391
10392                         if (klass == mono_defaults.void_class)
10393                                 UNVERIFIED;
10394                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10395                                 UNVERIFIED;
10396                         /* frequent check in generic code: box (struct), brtrue */
10397
10398                         /*
10399                          * Look for:
10400                          *
10401                          *   <push int/long ptr>
10402                          *   <push int/long>
10403                          *   box MyFlags
10404                          *   constrained. MyFlags
10405                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10406                          *
10407                          * If we find this sequence and the operand types on box and constrained
10408                          * are equal, we can emit a specialized instruction sequence instead of
10409                          * the very slow HasFlag () call.
10410                          */
10411                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10412                             /* Cheap checks first. */
10413                             ip + 5 + 6 + 5 < end &&
10414                             ip [5] == CEE_PREFIX1 &&
10415                             ip [6] == CEE_CONSTRAINED_ &&
10416                             ip [11] == CEE_CALLVIRT &&
10417                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10418                             mono_class_is_enum (klass) &&
10419                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10420                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10421                             has_flag->klass == mono_defaults.enum_class &&
10422                             !strcmp (has_flag->name, "HasFlag") &&
10423                             has_flag->signature->hasthis &&
10424                             has_flag->signature->param_count == 1) {
10425                                 CHECK_TYPELOAD (enum_class);
10426
10427                                 if (enum_class == klass) {
10428                                         MonoInst *enum_this, *enum_flag;
10429
10430                                         ip += 5 + 6 + 5;
10431                                         --sp;
10432
10433                                         enum_this = sp [0];
10434                                         enum_flag = sp [1];
10435
10436                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10437                                         break;
10438                                 }
10439                         }
10440
10441                         // FIXME: LLVM can't handle the inconsistent bb linking
10442                         if (!mono_class_is_nullable (klass) &&
10443                                 !mini_is_gsharedvt_klass (klass) &&
10444                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10445                                 (ip [5] == CEE_BRTRUE ||
10446                                  ip [5] == CEE_BRTRUE_S ||
10447                                  ip [5] == CEE_BRFALSE ||
10448                                  ip [5] == CEE_BRFALSE_S)) {
10449                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10450                                 int dreg;
10451                                 MonoBasicBlock *true_bb, *false_bb;
10452
10453                                 ip += 5;
10454
10455                                 if (cfg->verbose_level > 3) {
10456                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10457                                         printf ("<box+brtrue opt>\n");
10458                                 }
10459
10460                                 switch (*ip) {
10461                                 case CEE_BRTRUE_S:
10462                                 case CEE_BRFALSE_S:
10463                                         CHECK_OPSIZE (2);
10464                                         ip++;
10465                                         target = ip + 1 + (signed char)(*ip);
10466                                         ip++;
10467                                         break;
10468                                 case CEE_BRTRUE:
10469                                 case CEE_BRFALSE:
10470                                         CHECK_OPSIZE (5);
10471                                         ip++;
10472                                         target = ip + 4 + (gint)(read32 (ip));
10473                                         ip += 4;
10474                                         break;
10475                                 default:
10476                                         g_assert_not_reached ();
10477                                 }
10478
10479                                 /*
10480                                  * We need to link both bblocks, since it is needed for handling stack
10481                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10482                                  * Branching to only one of them would lead to inconsistencies, so
10483                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10484                                  */
10485                                 GET_BBLOCK (cfg, true_bb, target);
10486                                 GET_BBLOCK (cfg, false_bb, ip);
10487
10488                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10489                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10490
10491                                 if (sp != stack_start) {
10492                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10493                                         sp = stack_start;
10494                                         CHECK_UNVERIFIABLE (cfg);
10495                                 }
10496
10497                                 if (COMPILE_LLVM (cfg)) {
10498                                         dreg = alloc_ireg (cfg);
10499                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10500                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10501
10502                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10503                                 } else {
10504                                         /* The JIT can't eliminate the iconst+compare */
10505                                         MONO_INST_NEW (cfg, ins, OP_BR);
10506                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10507                                         MONO_ADD_INS (cfg->cbb, ins);
10508                                 }
10509
10510                                 start_new_bblock = 1;
10511                                 break;
10512                         }
10513
10514                         *sp++ = handle_box (cfg, val, klass, context_used);
10515
10516                         CHECK_CFG_EXCEPTION;
10517                         ip += 5;
10518                         inline_costs += 1;
10519                         break;
10520                 }
10521                 case CEE_UNBOX: {
10522                         CHECK_STACK (1);
10523                         --sp;
10524                         CHECK_OPSIZE (5);
10525                         token = read32 (ip + 1);
10526                         klass = mini_get_class (method, token, generic_context);
10527                         CHECK_TYPELOAD (klass);
10528
10529                         mono_save_token_info (cfg, image, token, klass);
10530
10531                         context_used = mini_class_check_context_used (cfg, klass);
10532
10533                         if (mono_class_is_nullable (klass)) {
10534                                 MonoInst *val;
10535
10536                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10537                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10538
10539                                 *sp++= ins;
10540                         } else {
10541                                 ins = handle_unbox (cfg, klass, sp, context_used);
10542                                 *sp++ = ins;
10543                         }
10544                         ip += 5;
10545                         inline_costs += 2;
10546                         break;
10547                 }
10548                 case CEE_LDFLD:
10549                 case CEE_LDFLDA:
10550                 case CEE_STFLD:
10551                 case CEE_LDSFLD:
10552                 case CEE_LDSFLDA:
10553                 case CEE_STSFLD: {
10554                         MonoClassField *field;
10555 #ifndef DISABLE_REMOTING
10556                         int costs;
10557 #endif
10558                         guint foffset;
10559                         gboolean is_instance;
10560                         int op;
10561                         gpointer addr = NULL;
10562                         gboolean is_special_static;
10563                         MonoType *ftype;
10564                         MonoInst *store_val = NULL;
10565                         MonoInst *thread_ins;
10566
10567                         op = *ip;
10568                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10569                         if (is_instance) {
10570                                 if (op == CEE_STFLD) {
10571                                         CHECK_STACK (2);
10572                                         sp -= 2;
10573                                         store_val = sp [1];
10574                                 } else {
10575                                         CHECK_STACK (1);
10576                                         --sp;
10577                                 }
10578                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10579                                         UNVERIFIED;
10580                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10581                                         UNVERIFIED;
10582                         } else {
10583                                 if (op == CEE_STSFLD) {
10584                                         CHECK_STACK (1);
10585                                         sp--;
10586                                         store_val = sp [0];
10587                                 }
10588                         }
10589
10590                         CHECK_OPSIZE (5);
10591                         token = read32 (ip + 1);
10592                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10593                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10594                                 klass = field->parent;
10595                         }
10596                         else {
10597                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10598                                 CHECK_CFG_ERROR;
10599                         }
10600                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10601                                 FIELD_ACCESS_FAILURE (method, field);
10602                         mono_class_init (klass);
10603
10604                         /* if the class is Critical then transparent code cannot access it's fields */
10605                         if (!is_instance && mono_security_core_clr_enabled ())
10606                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10607
10608                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10609                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10610                         if (mono_security_core_clr_enabled ())
10611                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10612                         */
10613
10614                         ftype = mono_field_get_type (field);
10615
10616                         /*
10617                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10618                          * the static case.
10619                          */
10620                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10621                                 switch (op) {
10622                                 case CEE_LDFLD:
10623                                         op = CEE_LDSFLD;
10624                                         break;
10625                                 case CEE_STFLD:
10626                                         op = CEE_STSFLD;
10627                                         break;
10628                                 case CEE_LDFLDA:
10629                                         op = CEE_LDSFLDA;
10630                                         break;
10631                                 default:
10632                                         g_assert_not_reached ();
10633                                 }
10634                                 is_instance = FALSE;
10635                         }
10636
10637                         context_used = mini_class_check_context_used (cfg, klass);
10638
10639                         /* INSTANCE CASE */
10640
10641                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10642                         if (op == CEE_STFLD) {
10643                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10644                                         UNVERIFIED;
10645 #ifndef DISABLE_REMOTING
10646                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10647                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10648                                         MonoInst *iargs [5];
10649
10650                                         GSHAREDVT_FAILURE (op);
10651
10652                                         iargs [0] = sp [0];
10653                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10654                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10655                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10656                                                     field->offset);
10657                                         iargs [4] = sp [1];
10658
10659                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10660                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10661                                                                                            iargs, ip, cfg->real_offset, TRUE);
10662                                                 CHECK_CFG_EXCEPTION;
10663                                                 g_assert (costs > 0);
10664
10665                                                 cfg->real_offset += 5;
10666
10667                                                 inline_costs += costs;
10668                                         } else {
10669                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10670                                         }
10671                                 } else
10672 #endif
10673                                 {
10674                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10675
10676                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10677
10678                                         if (ins_flag & MONO_INST_VOLATILE) {
10679                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10680                                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10681                                         }
10682
10683                                         if (mini_is_gsharedvt_klass (klass)) {
10684                                                 MonoInst *offset_ins;
10685
10686                                                 context_used = mini_class_check_context_used (cfg, klass);
10687
10688                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10689                                                 /* The value is offset by 1 */
10690                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10691                                                 dreg = alloc_ireg_mp (cfg);
10692                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10693                                                 wbarrier_ptr_ins = ins;
10694                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10695                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10696                                         } else {
10697                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10698                                         }
10699                                         if (sp [0]->opcode != OP_LDADDR)
10700                                                 store->flags |= MONO_INST_FAULT;
10701
10702                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10703                                                 if (mini_is_gsharedvt_klass (klass)) {
10704                                                         g_assert (wbarrier_ptr_ins);
10705                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10706                                                 } else {
10707                                                         /* insert call to write barrier */
10708                                                         MonoInst *ptr;
10709                                                         int dreg;
10710
10711                                                         dreg = alloc_ireg_mp (cfg);
10712                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10713                                                         emit_write_barrier (cfg, ptr, sp [1]);
10714                                                 }
10715                                         }
10716
10717                                         store->flags |= ins_flag;
10718                                 }
10719                                 ins_flag = 0;
10720                                 ip += 5;
10721                                 break;
10722                         }
10723
10724 #ifndef DISABLE_REMOTING
10725                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10726                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10727                                 MonoInst *iargs [4];
10728
10729                                 GSHAREDVT_FAILURE (op);
10730
10731                                 iargs [0] = sp [0];
10732                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10733                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10734                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10735                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10736                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10737                                                                                    iargs, ip, cfg->real_offset, TRUE);
10738                                         CHECK_CFG_EXCEPTION;
10739                                         g_assert (costs > 0);
10740
10741                                         cfg->real_offset += 5;
10742
10743                                         *sp++ = iargs [0];
10744
10745                                         inline_costs += costs;
10746                                 } else {
10747                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10748                                         *sp++ = ins;
10749                                 }
10750                         } else
10751 #endif
10752                         if (is_instance) {
10753                                 if (sp [0]->type == STACK_VTYPE) {
10754                                         MonoInst *var;
10755
10756                                         /* Have to compute the address of the variable */
10757
10758                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10759                                         if (!var)
10760                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10761                                         else
10762                                                 g_assert (var->klass == klass);
10763
10764                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10765                                         sp [0] = ins;
10766                                 }
10767
10768                                 if (op == CEE_LDFLDA) {
10769                                         if (sp [0]->type == STACK_OBJ) {
10770                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10771                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10772                                         }
10773
10774                                         dreg = alloc_ireg_mp (cfg);
10775
10776                                         if (mini_is_gsharedvt_klass (klass)) {
10777                                                 MonoInst *offset_ins;
10778
10779                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10780                                                 /* The value is offset by 1 */
10781                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10782                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10783                                         } else {
10784                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10785                                         }
10786                                         ins->klass = mono_class_from_mono_type (field->type);
10787                                         ins->type = STACK_MP;
10788                                         *sp++ = ins;
10789                                 } else {
10790                                         MonoInst *load;
10791
10792                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10793
10794                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10795                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10796                                                 if (ins) {
10797                                                         *sp++ = ins;
10798                                                         ins_flag = 0;
10799                                                         ip += 5;
10800                                                         break;
10801                                                 }
10802                                         }
10803
10804                                         if (mini_is_gsharedvt_klass (klass)) {
10805                                                 MonoInst *offset_ins;
10806
10807                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10808                                                 /* The value is offset by 1 */
10809                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10810                                                 dreg = alloc_ireg_mp (cfg);
10811                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10812                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
10813                                         } else {
10814                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
10815                                         }
10816                                         load->flags |= ins_flag;
10817                                         if (sp [0]->opcode != OP_LDADDR)
10818                                                 load->flags |= MONO_INST_FAULT;
10819                                         *sp++ = load;
10820                                 }
10821                         }
10822
10823                         if (is_instance) {
10824                                 ins_flag = 0;
10825                                 ip += 5;
10826                                 break;
10827                         }
10828
10829                         /* STATIC CASE */
10830                         context_used = mini_class_check_context_used (cfg, klass);
10831
10832                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10833                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10834                                 CHECK_CFG_ERROR;
10835                         }
10836
10837                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10838                          * to be called here.
10839                          */
10840                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10841                                 mono_class_vtable (cfg->domain, klass);
10842                                 CHECK_TYPELOAD (klass);
10843                         }
10844                         mono_domain_lock (cfg->domain);
10845                         if (cfg->domain->special_static_fields)
10846                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10847                         mono_domain_unlock (cfg->domain);
10848
10849                         is_special_static = mono_class_field_is_special_static (field);
10850
10851                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10852                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10853                         else
10854                                 thread_ins = NULL;
10855
10856                         /* Generate IR to compute the field address */
10857                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10858                                 /*
10859                                  * Fast access to TLS data
10860                                  * Inline version of get_thread_static_data () in
10861                                  * threads.c.
10862                                  */
10863                                 guint32 offset;
10864                                 int idx, static_data_reg, array_reg, dreg;
10865
10866                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10867                                         GSHAREDVT_FAILURE (op);
10868
10869                                 static_data_reg = alloc_ireg (cfg);
10870                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10871
10872                                 if (cfg->compile_aot) {
10873                                         int offset_reg, offset2_reg, idx_reg;
10874
10875                                         /* For TLS variables, this will return the TLS offset */
10876                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10877                                         offset_reg = ins->dreg;
10878                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10879                                         idx_reg = alloc_ireg (cfg);
10880                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10881                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10882                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10883                                         array_reg = alloc_ireg (cfg);
10884                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10885                                         offset2_reg = alloc_ireg (cfg);
10886                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10887                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10888                                         dreg = alloc_ireg (cfg);
10889                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10890                                 } else {
10891                                         offset = (gsize)addr & 0x7fffffff;
10892                                         idx = offset & 0x3f;
10893
10894                                         array_reg = alloc_ireg (cfg);
10895                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10896                                         dreg = alloc_ireg (cfg);
10897                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10898                                 }
10899                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10900                                         (cfg->compile_aot && is_special_static) ||
10901                                         (context_used && is_special_static)) {
10902                                 MonoInst *iargs [2];
10903
10904                                 g_assert (field->parent);
10905                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10906                                 if (context_used) {
10907                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10908                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10909                                 } else {
10910                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10911                                 }
10912                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10913                         } else if (context_used) {
10914                                 MonoInst *static_data;
10915
10916                                 /*
10917                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10918                                         method->klass->name_space, method->klass->name, method->name,
10919                                         depth, field->offset);
10920                                 */
10921
10922                                 if (mono_class_needs_cctor_run (klass, method))
10923                                         emit_class_init (cfg, klass);
10924
10925                                 /*
10926                                  * The pointer we're computing here is
10927                                  *
10928                                  *   super_info.static_data + field->offset
10929                                  */
10930                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10931                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10932
10933                                 if (mini_is_gsharedvt_klass (klass)) {
10934                                         MonoInst *offset_ins;
10935
10936                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10937                                         /* The value is offset by 1 */
10938                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10939                                         dreg = alloc_ireg_mp (cfg);
10940                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10941                                 } else if (field->offset == 0) {
10942                                         ins = static_data;
10943                                 } else {
10944                                         int addr_reg = mono_alloc_preg (cfg);
10945                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10946                                 }
10947                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10948                                 MonoInst *iargs [2];
10949
10950                                 g_assert (field->parent);
10951                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10952                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10953                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10954                         } else {
10955                                 MonoVTable *vtable = NULL;
10956
10957                                 if (!cfg->compile_aot)
10958                                         vtable = mono_class_vtable (cfg->domain, klass);
10959                                 CHECK_TYPELOAD (klass);
10960
10961                                 if (!addr) {
10962                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10963                                                 if (!(g_slist_find (class_inits, klass))) {
10964                                                         emit_class_init (cfg, klass);
10965                                                         if (cfg->verbose_level > 2)
10966                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10967                                                         class_inits = g_slist_prepend (class_inits, klass);
10968                                                 }
10969                                         } else {
10970                                                 if (cfg->run_cctors) {
10971                                                         /* This makes so that inline cannot trigger */
10972                                                         /* .cctors: too many apps depend on them */
10973                                                         /* running with a specific order... */
10974                                                         g_assert (vtable);
10975                                                         if (! vtable->initialized)
10976                                                                 INLINE_FAILURE ("class init");
10977                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10978                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10979                                                                 goto exception_exit;
10980                                                         }
10981                                                 }
10982                                         }
10983                                         if (cfg->compile_aot)
10984                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10985                                         else {
10986                                                 g_assert (vtable);
10987                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10988                                                 g_assert (addr);
10989                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10990                                         }
10991                                 } else {
10992                                         MonoInst *iargs [1];
10993                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10994                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10995                                 }
10996                         }
10997
10998                         /* Generate IR to do the actual load/store operation */
10999
11000                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11001                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11002                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11003                         }
11004
11005                         if (op == CEE_LDSFLDA) {
11006                                 ins->klass = mono_class_from_mono_type (ftype);
11007                                 ins->type = STACK_PTR;
11008                                 *sp++ = ins;
11009                         } else if (op == CEE_STSFLD) {
11010                                 MonoInst *store;
11011
11012                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11013                                 store->flags |= ins_flag;
11014                         } else {
11015                                 gboolean is_const = FALSE;
11016                                 MonoVTable *vtable = NULL;
11017                                 gpointer addr = NULL;
11018
11019                                 if (!context_used) {
11020                                         vtable = mono_class_vtable (cfg->domain, klass);
11021                                         CHECK_TYPELOAD (klass);
11022                                 }
11023                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11024                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11025                                         int ro_type = ftype->type;
11026                                         if (!addr)
11027                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11028                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11029                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11030                                         }
11031
11032                                         GSHAREDVT_FAILURE (op);
11033
11034                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11035                                         is_const = TRUE;
11036                                         switch (ro_type) {
11037                                         case MONO_TYPE_BOOLEAN:
11038                                         case MONO_TYPE_U1:
11039                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11040                                                 sp++;
11041                                                 break;
11042                                         case MONO_TYPE_I1:
11043                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11044                                                 sp++;
11045                                                 break;
11046                                         case MONO_TYPE_CHAR:
11047                                         case MONO_TYPE_U2:
11048                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11049                                                 sp++;
11050                                                 break;
11051                                         case MONO_TYPE_I2:
11052                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11053                                                 sp++;
11054                                                 break;
11055                                                 break;
11056                                         case MONO_TYPE_I4:
11057                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11058                                                 sp++;
11059                                                 break;
11060                                         case MONO_TYPE_U4:
11061                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11062                                                 sp++;
11063                                                 break;
11064                                         case MONO_TYPE_I:
11065                                         case MONO_TYPE_U:
11066                                         case MONO_TYPE_PTR:
11067                                         case MONO_TYPE_FNPTR:
11068                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11069                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11070                                                 sp++;
11071                                                 break;
11072                                         case MONO_TYPE_STRING:
11073                                         case MONO_TYPE_OBJECT:
11074                                         case MONO_TYPE_CLASS:
11075                                         case MONO_TYPE_SZARRAY:
11076                                         case MONO_TYPE_ARRAY:
11077                                                 if (!mono_gc_is_moving ()) {
11078                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11079                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11080                                                         sp++;
11081                                                 } else {
11082                                                         is_const = FALSE;
11083                                                 }
11084                                                 break;
11085                                         case MONO_TYPE_I8:
11086                                         case MONO_TYPE_U8:
11087                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11088                                                 sp++;
11089                                                 break;
11090                                         case MONO_TYPE_R4:
11091                                         case MONO_TYPE_R8:
11092                                         case MONO_TYPE_VALUETYPE:
11093                                         default:
11094                                                 is_const = FALSE;
11095                                                 break;
11096                                         }
11097                                 }
11098
11099                                 if (!is_const) {
11100                                         MonoInst *load;
11101
11102                                         CHECK_STACK_OVF (1);
11103
11104                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11105                                         load->flags |= ins_flag;
11106                                         ins_flag = 0;
11107                                         *sp++ = load;
11108                                 }
11109                         }
11110
11111                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11112                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11113                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11114                         }
11115
11116                         ins_flag = 0;
11117                         ip += 5;
11118                         break;
11119                 }
11120                 case CEE_STOBJ:
11121                         CHECK_STACK (2);
11122                         sp -= 2;
11123                         CHECK_OPSIZE (5);
11124                         token = read32 (ip + 1);
11125                         klass = mini_get_class (method, token, generic_context);
11126                         CHECK_TYPELOAD (klass);
11127                         if (ins_flag & MONO_INST_VOLATILE) {
11128                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11129                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11130                         }
11131                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11132                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11133                         ins->flags |= ins_flag;
11134                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11135                                 generic_class_is_reference_type (cfg, klass) && !MONO_INS_IS_PCONST_NULL (sp [1])) {
11136                                 /* insert call to write barrier */
11137                                 emit_write_barrier (cfg, sp [0], sp [1]);
11138                         }
11139                         ins_flag = 0;
11140                         ip += 5;
11141                         inline_costs += 1;
11142                         break;
11143
11144                         /*
11145                          * Array opcodes
11146                          */
11147                 case CEE_NEWARR: {
11148                         MonoInst *len_ins;
11149                         const char *data_ptr;
11150                         int data_size = 0;
11151                         guint32 field_token;
11152
11153                         CHECK_STACK (1);
11154                         --sp;
11155
11156                         CHECK_OPSIZE (5);
11157                         token = read32 (ip + 1);
11158
11159                         klass = mini_get_class (method, token, generic_context);
11160                         CHECK_TYPELOAD (klass);
11161
11162                         context_used = mini_class_check_context_used (cfg, klass);
11163
11164                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11165                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11166                                 ins->sreg1 = sp [0]->dreg;
11167                                 ins->type = STACK_I4;
11168                                 ins->dreg = alloc_ireg (cfg);
11169                                 MONO_ADD_INS (cfg->cbb, ins);
11170                                 *sp = mono_decompose_opcode (cfg, ins);
11171                         }
11172
11173                         if (context_used) {
11174                                 MonoInst *args [3];
11175                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11176                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11177
11178                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11179
11180                                 /* vtable */
11181                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
11182                                         array_class, MONO_RGCTX_INFO_VTABLE);
11183                                 /* array len */
11184                                 args [1] = sp [0];
11185
11186                                 if (managed_alloc)
11187                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11188                                 else
11189                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11190                         } else {
11191                                 if (cfg->opt & MONO_OPT_SHARED) {
11192                                         /* Decompose now to avoid problems with references to the domainvar */
11193                                         MonoInst *iargs [3];
11194
11195                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11196                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11197                                         iargs [2] = sp [0];
11198
11199                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11200                                 } else {
11201                                         /* Decompose later since it is needed by abcrem */
11202                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11203                                         mono_class_vtable (cfg->domain, array_type);
11204                                         CHECK_TYPELOAD (array_type);
11205
11206                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11207                                         ins->dreg = alloc_ireg_ref (cfg);
11208                                         ins->sreg1 = sp [0]->dreg;
11209                                         ins->inst_newa_class = klass;
11210                                         ins->type = STACK_OBJ;
11211                                         ins->klass = array_type;
11212                                         MONO_ADD_INS (cfg->cbb, ins);
11213                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11214                                         cfg->cbb->has_array_access = TRUE;
11215
11216                                         /* Needed so mono_emit_load_get_addr () gets called */
11217                                         mono_get_got_var (cfg);
11218                                 }
11219                         }
11220
11221                         len_ins = sp [0];
11222                         ip += 5;
11223                         *sp++ = ins;
11224                         inline_costs += 1;
11225
11226                         /*
11227                          * we inline/optimize the initialization sequence if possible.
11228                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11229                          * for small sizes open code the memcpy
11230                          * ensure the rva field is big enough
11231                          */
11232                         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))) {
11233                                 MonoMethod *memcpy_method = get_memcpy_method ();
11234                                 MonoInst *iargs [3];
11235                                 int add_reg = alloc_ireg_mp (cfg);
11236
11237                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11238                                 if (cfg->compile_aot) {
11239                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11240                                 } else {
11241                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11242                                 }
11243                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11244                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11245                                 ip += 11;
11246                         }
11247
11248                         break;
11249                 }
11250                 case CEE_LDLEN:
11251                         CHECK_STACK (1);
11252                         --sp;
11253                         if (sp [0]->type != STACK_OBJ)
11254                                 UNVERIFIED;
11255
11256                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11257                         ins->dreg = alloc_preg (cfg);
11258                         ins->sreg1 = sp [0]->dreg;
11259                         ins->type = STACK_I4;
11260                         /* This flag will be inherited by the decomposition */
11261                         ins->flags |= MONO_INST_FAULT;
11262                         MONO_ADD_INS (cfg->cbb, ins);
11263                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11264                         cfg->cbb->has_array_access = TRUE;
11265                         ip ++;
11266                         *sp++ = ins;
11267                         break;
11268                 case CEE_LDELEMA:
11269                         CHECK_STACK (2);
11270                         sp -= 2;
11271                         CHECK_OPSIZE (5);
11272                         if (sp [0]->type != STACK_OBJ)
11273                                 UNVERIFIED;
11274
11275                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11276
11277                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11278                         CHECK_TYPELOAD (klass);
11279                         /* we need to make sure that this array is exactly the type it needs
11280                          * to be for correctness. the wrappers are lax with their usage
11281                          * so we need to ignore them here
11282                          */
11283                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11284                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11285                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11286                                 CHECK_TYPELOAD (array_class);
11287                         }
11288
11289                         readonly = FALSE;
11290                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11291                         *sp++ = ins;
11292                         ip += 5;
11293                         break;
11294                 case CEE_LDELEM:
11295                 case CEE_LDELEM_I1:
11296                 case CEE_LDELEM_U1:
11297                 case CEE_LDELEM_I2:
11298                 case CEE_LDELEM_U2:
11299                 case CEE_LDELEM_I4:
11300                 case CEE_LDELEM_U4:
11301                 case CEE_LDELEM_I8:
11302                 case CEE_LDELEM_I:
11303                 case CEE_LDELEM_R4:
11304                 case CEE_LDELEM_R8:
11305                 case CEE_LDELEM_REF: {
11306                         MonoInst *addr;
11307
11308                         CHECK_STACK (2);
11309                         sp -= 2;
11310
11311                         if (*ip == CEE_LDELEM) {
11312                                 CHECK_OPSIZE (5);
11313                                 token = read32 (ip + 1);
11314                                 klass = mini_get_class (method, token, generic_context);
11315                                 CHECK_TYPELOAD (klass);
11316                                 mono_class_init (klass);
11317                         }
11318                         else
11319                                 klass = array_access_to_klass (*ip);
11320
11321                         if (sp [0]->type != STACK_OBJ)
11322                                 UNVERIFIED;
11323
11324                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11325
11326                         if (mini_is_gsharedvt_variable_klass (klass)) {
11327                                 // FIXME-VT: OP_ICONST optimization
11328                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11329                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11330                                 ins->opcode = OP_LOADV_MEMBASE;
11331                         } else if (sp [1]->opcode == OP_ICONST) {
11332                                 int array_reg = sp [0]->dreg;
11333                                 int index_reg = sp [1]->dreg;
11334                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11335
11336                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11337                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11338
11339                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11340                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11341                         } else {
11342                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11343                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11344                         }
11345                         *sp++ = ins;
11346                         if (*ip == CEE_LDELEM)
11347                                 ip += 5;
11348                         else
11349                                 ++ip;
11350                         break;
11351                 }
11352                 case CEE_STELEM_I:
11353                 case CEE_STELEM_I1:
11354                 case CEE_STELEM_I2:
11355                 case CEE_STELEM_I4:
11356                 case CEE_STELEM_I8:
11357                 case CEE_STELEM_R4:
11358                 case CEE_STELEM_R8:
11359                 case CEE_STELEM_REF:
11360                 case CEE_STELEM: {
11361                         CHECK_STACK (3);
11362                         sp -= 3;
11363
11364                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11365
11366                         if (*ip == CEE_STELEM) {
11367                                 CHECK_OPSIZE (5);
11368                                 token = read32 (ip + 1);
11369                                 klass = mini_get_class (method, token, generic_context);
11370                                 CHECK_TYPELOAD (klass);
11371                                 mono_class_init (klass);
11372                         }
11373                         else
11374                                 klass = array_access_to_klass (*ip);
11375
11376                         if (sp [0]->type != STACK_OBJ)
11377                                 UNVERIFIED;
11378
11379                         emit_array_store (cfg, klass, sp, TRUE);
11380
11381                         if (*ip == CEE_STELEM)
11382                                 ip += 5;
11383                         else
11384                                 ++ip;
11385                         inline_costs += 1;
11386                         break;
11387                 }
11388                 case CEE_CKFINITE: {
11389                         CHECK_STACK (1);
11390                         --sp;
11391
11392                         if (cfg->llvm_only) {
11393                                 MonoInst *iargs [1];
11394
11395                                 iargs [0] = sp [0];
11396                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11397                         } else  {
11398                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11399                                 ins->sreg1 = sp [0]->dreg;
11400                                 ins->dreg = alloc_freg (cfg);
11401                                 ins->type = STACK_R8;
11402                                 MONO_ADD_INS (cfg->cbb, ins);
11403
11404                                 *sp++ = mono_decompose_opcode (cfg, ins);
11405                         }
11406
11407                         ++ip;
11408                         break;
11409                 }
11410                 case CEE_REFANYVAL: {
11411                         MonoInst *src_var, *src;
11412
11413                         int klass_reg = alloc_preg (cfg);
11414                         int dreg = alloc_preg (cfg);
11415
11416                         GSHAREDVT_FAILURE (*ip);
11417
11418                         CHECK_STACK (1);
11419                         MONO_INST_NEW (cfg, ins, *ip);
11420                         --sp;
11421                         CHECK_OPSIZE (5);
11422                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11423                         CHECK_TYPELOAD (klass);
11424
11425                         context_used = mini_class_check_context_used (cfg, klass);
11426
11427                         // FIXME:
11428                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11429                         if (!src_var)
11430                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11431                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11432                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11433
11434                         if (context_used) {
11435                                 MonoInst *klass_ins;
11436
11437                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11438                                                 klass, MONO_RGCTX_INFO_KLASS);
11439
11440                                 // FIXME:
11441                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11442                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11443                         } else {
11444                                 mini_emit_class_check (cfg, klass_reg, klass);
11445                         }
11446                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11447                         ins->type = STACK_MP;
11448                         ins->klass = klass;
11449                         *sp++ = ins;
11450                         ip += 5;
11451                         break;
11452                 }
11453                 case CEE_MKREFANY: {
11454                         MonoInst *loc, *addr;
11455
11456                         GSHAREDVT_FAILURE (*ip);
11457
11458                         CHECK_STACK (1);
11459                         MONO_INST_NEW (cfg, ins, *ip);
11460                         --sp;
11461                         CHECK_OPSIZE (5);
11462                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11463                         CHECK_TYPELOAD (klass);
11464
11465                         context_used = mini_class_check_context_used (cfg, klass);
11466
11467                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11468                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11469
11470                         if (context_used) {
11471                                 MonoInst *const_ins;
11472                                 int type_reg = alloc_preg (cfg);
11473
11474                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11475                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11476                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11477                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11478                         } else {
11479                                 int const_reg = alloc_preg (cfg);
11480                                 int type_reg = alloc_preg (cfg);
11481
11482                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11483                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11484                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11485                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11486                         }
11487                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11488
11489                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11490                         ins->type = STACK_VTYPE;
11491                         ins->klass = mono_defaults.typed_reference_class;
11492                         *sp++ = ins;
11493                         ip += 5;
11494                         break;
11495                 }
11496                 case CEE_LDTOKEN: {
11497                         gpointer handle;
11498                         MonoClass *handle_class;
11499
11500                         CHECK_STACK_OVF (1);
11501
11502                         CHECK_OPSIZE (5);
11503                         n = read32 (ip + 1);
11504
11505                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11506                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11507                                 handle = mono_method_get_wrapper_data (method, n);
11508                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11509                                 if (handle_class == mono_defaults.typehandle_class)
11510                                         handle = &((MonoClass*)handle)->byval_arg;
11511                         }
11512                         else {
11513                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11514                                 CHECK_CFG_ERROR;
11515                         }
11516                         if (!handle)
11517                                 LOAD_ERROR;
11518                         mono_class_init (handle_class);
11519                         if (cfg->gshared) {
11520                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11521                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11522                                         /* This case handles ldtoken
11523                                            of an open type, like for
11524                                            typeof(Gen<>). */
11525                                         context_used = 0;
11526                                 } else if (handle_class == mono_defaults.typehandle_class) {
11527                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11528                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11529                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11530                                 else if (handle_class == mono_defaults.methodhandle_class)
11531                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11532                                 else
11533                                         g_assert_not_reached ();
11534                         }
11535
11536                         if ((cfg->opt & MONO_OPT_SHARED) &&
11537                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11538                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11539                                 MonoInst *addr, *vtvar, *iargs [3];
11540                                 int method_context_used;
11541
11542                                 method_context_used = mini_method_check_context_used (cfg, method);
11543
11544                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11545
11546                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11547                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11548                                 if (method_context_used) {
11549                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11550                                                 method, MONO_RGCTX_INFO_METHOD);
11551                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11552                                 } else {
11553                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11554                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11555                                 }
11556                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11557
11558                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11559
11560                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11561                         } else {
11562                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11563                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11564                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11565                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11566                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11567                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11568
11569                                         mono_class_init (tclass);
11570                                         if (context_used) {
11571                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11572                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11573                                         } else if (cfg->compile_aot) {
11574                                                 if (method->wrapper_type) {
11575                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
11576                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11577                                                                 /* Special case for static synchronized wrappers */
11578                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11579                                                         } else {
11580                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11581                                                                 /* FIXME: n is not a normal token */
11582                                                                 DISABLE_AOT (cfg);
11583                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11584                                                         }
11585                                                 } else {
11586                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11587                                                 }
11588                                         } else {
11589                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11590                                                 CHECK_CFG_ERROR;
11591                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11592                                         }
11593                                         ins->type = STACK_OBJ;
11594                                         ins->klass = cmethod->klass;
11595                                         ip += 5;
11596                                 } else {
11597                                         MonoInst *addr, *vtvar;
11598
11599                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11600
11601                                         if (context_used) {
11602                                                 if (handle_class == mono_defaults.typehandle_class) {
11603                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11604                                                                         mono_class_from_mono_type ((MonoType *)handle),
11605                                                                         MONO_RGCTX_INFO_TYPE);
11606                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11607                                                         ins = emit_get_rgctx_method (cfg, context_used,
11608                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11609                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11610                                                         ins = emit_get_rgctx_field (cfg, context_used,
11611                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11612                                                 } else {
11613                                                         g_assert_not_reached ();
11614                                                 }
11615                                         } else if (cfg->compile_aot) {
11616                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11617                                         } else {
11618                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11619                                         }
11620                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11621                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11622                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11623                                 }
11624                         }
11625
11626                         *sp++ = ins;
11627                         ip += 5;
11628                         break;
11629                 }
11630                 case CEE_THROW:
11631                         CHECK_STACK (1);
11632                         if (sp [-1]->type != STACK_OBJ)
11633                                 UNVERIFIED;
11634
11635                         MONO_INST_NEW (cfg, ins, OP_THROW);
11636                         --sp;
11637                         ins->sreg1 = sp [0]->dreg;
11638                         ip++;
11639                         cfg->cbb->out_of_line = TRUE;
11640                         MONO_ADD_INS (cfg->cbb, ins);
11641                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11642                         MONO_ADD_INS (cfg->cbb, ins);
11643                         sp = stack_start;
11644
11645                         link_bblock (cfg, cfg->cbb, end_bblock);
11646                         start_new_bblock = 1;
11647                         /* This can complicate code generation for llvm since the return value might not be defined */
11648                         if (COMPILE_LLVM (cfg))
11649                                 INLINE_FAILURE ("throw");
11650                         break;
11651                 case CEE_ENDFINALLY:
11652                         if (!ip_in_finally_clause (cfg, ip - header->code))
11653                                 UNVERIFIED;
11654                         /* mono_save_seq_point_info () depends on this */
11655                         if (sp != stack_start)
11656                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11657                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11658                         MONO_ADD_INS (cfg->cbb, ins);
11659                         ip++;
11660                         start_new_bblock = 1;
11661
11662                         /*
11663                          * Control will leave the method so empty the stack, otherwise
11664                          * the next basic block will start with a nonempty stack.
11665                          */
11666                         while (sp != stack_start) {
11667                                 sp--;
11668                         }
11669                         break;
11670                 case CEE_LEAVE:
11671                 case CEE_LEAVE_S: {
11672                         GList *handlers;
11673
11674                         if (*ip == CEE_LEAVE) {
11675                                 CHECK_OPSIZE (5);
11676                                 target = ip + 5 + (gint32)read32(ip + 1);
11677                         } else {
11678                                 CHECK_OPSIZE (2);
11679                                 target = ip + 2 + (signed char)(ip [1]);
11680                         }
11681
11682                         /* empty the stack */
11683                         while (sp != stack_start) {
11684                                 sp--;
11685                         }
11686
11687                         /*
11688                          * If this leave statement is in a catch block, check for a
11689                          * pending exception, and rethrow it if necessary.
11690                          * We avoid doing this in runtime invoke wrappers, since those are called
11691                          * by native code which excepts the wrapper to catch all exceptions.
11692                          */
11693                         for (i = 0; i < header->num_clauses; ++i) {
11694                                 MonoExceptionClause *clause = &header->clauses [i];
11695
11696                                 /*
11697                                  * Use <= in the final comparison to handle clauses with multiple
11698                                  * leave statements, like in bug #78024.
11699                                  * The ordering of the exception clauses guarantees that we find the
11700                                  * innermost clause.
11701                                  */
11702                                 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) {
11703                                         MonoInst *exc_ins;
11704                                         MonoBasicBlock *dont_throw;
11705
11706                                         /*
11707                                           MonoInst *load;
11708
11709                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11710                                         */
11711
11712                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11713
11714                                         NEW_BBLOCK (cfg, dont_throw);
11715
11716                                         /*
11717                                          * Currently, we always rethrow the abort exception, despite the
11718                                          * fact that this is not correct. See thread6.cs for an example.
11719                                          * But propagating the abort exception is more important than
11720                                          * getting the sematics right.
11721                                          */
11722                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11723                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11724                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11725
11726                                         MONO_START_BB (cfg, dont_throw);
11727                                 }
11728                         }
11729
11730 #ifdef ENABLE_LLVM
11731                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11732 #endif
11733
11734                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11735                                 GList *tmp;
11736                                 MonoExceptionClause *clause;
11737
11738                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11739                                         clause = (MonoExceptionClause *)tmp->data;
11740                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11741                                         g_assert (tblock);
11742                                         link_bblock (cfg, cfg->cbb, tblock);
11743                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11744                                         ins->inst_target_bb = tblock;
11745                                         ins->inst_eh_block = clause;
11746                                         MONO_ADD_INS (cfg->cbb, ins);
11747                                         cfg->cbb->has_call_handler = 1;
11748                                         if (COMPILE_LLVM (cfg)) {
11749                                                 MonoBasicBlock *target_bb;
11750
11751                                                 /*
11752                                                  * Link the finally bblock with the target, since it will
11753                                                  * conceptually branch there.
11754                                                  */
11755                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11756                                                 GET_BBLOCK (cfg, target_bb, target);
11757                                                 link_bblock (cfg, tblock, target_bb);
11758                                         }
11759                                 }
11760                                 g_list_free (handlers);
11761                         }
11762
11763                         MONO_INST_NEW (cfg, ins, OP_BR);
11764                         MONO_ADD_INS (cfg->cbb, ins);
11765                         GET_BBLOCK (cfg, tblock, target);
11766                         link_bblock (cfg, cfg->cbb, tblock);
11767                         ins->inst_target_bb = tblock;
11768
11769                         start_new_bblock = 1;
11770
11771                         if (*ip == CEE_LEAVE)
11772                                 ip += 5;
11773                         else
11774                                 ip += 2;
11775
11776                         break;
11777                 }
11778
11779                         /*
11780                          * Mono specific opcodes
11781                          */
11782                 case MONO_CUSTOM_PREFIX: {
11783
11784                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11785
11786                         CHECK_OPSIZE (2);
11787                         switch (ip [1]) {
11788                         case CEE_MONO_ICALL: {
11789                                 gpointer func;
11790                                 MonoJitICallInfo *info;
11791
11792                                 token = read32 (ip + 2);
11793                                 func = mono_method_get_wrapper_data (method, token);
11794                                 info = mono_find_jit_icall_by_addr (func);
11795                                 if (!info)
11796                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11797                                 g_assert (info);
11798
11799                                 CHECK_STACK (info->sig->param_count);
11800                                 sp -= info->sig->param_count;
11801
11802                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11803                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11804                                         *sp++ = ins;
11805
11806                                 ip += 6;
11807                                 inline_costs += 10 * num_calls++;
11808
11809                                 break;
11810                         }
11811                         case CEE_MONO_LDPTR_CARD_TABLE:
11812                         case CEE_MONO_LDPTR_NURSERY_START:
11813                         case CEE_MONO_LDPTR_NURSERY_BITS:
11814                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11815                                 CHECK_STACK_OVF (1);
11816
11817                                 switch (ip [1]) {
11818                                         case CEE_MONO_LDPTR_CARD_TABLE:
11819                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11820                                                 break;
11821                                         case CEE_MONO_LDPTR_NURSERY_START:
11822                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11823                                                 break;
11824                                         case CEE_MONO_LDPTR_NURSERY_BITS:
11825                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11826                                                 break;
11827                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11828                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11829                                                 break;
11830                                 }
11831
11832                                 *sp++ = ins;
11833                                 ip += 2;
11834                                 inline_costs += 10 * num_calls++;
11835                                 break;
11836                         }
11837                         case CEE_MONO_LDPTR: {
11838                                 gpointer ptr;
11839
11840                                 CHECK_STACK_OVF (1);
11841                                 CHECK_OPSIZE (6);
11842                                 token = read32 (ip + 2);
11843
11844                                 ptr = mono_method_get_wrapper_data (method, token);
11845                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11846                                 *sp++ = ins;
11847                                 ip += 6;
11848                                 inline_costs += 10 * num_calls++;
11849                                 /* Can't embed random pointers into AOT code */
11850                                 DISABLE_AOT (cfg);
11851                                 break;
11852                         }
11853                         case CEE_MONO_JIT_ICALL_ADDR: {
11854                                 MonoJitICallInfo *callinfo;
11855                                 gpointer ptr;
11856
11857                                 CHECK_STACK_OVF (1);
11858                                 CHECK_OPSIZE (6);
11859                                 token = read32 (ip + 2);
11860
11861                                 ptr = mono_method_get_wrapper_data (method, token);
11862                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11863                                 g_assert (callinfo);
11864                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11865                                 *sp++ = ins;
11866                                 ip += 6;
11867                                 inline_costs += 10 * num_calls++;
11868                                 break;
11869                         }
11870                         case CEE_MONO_ICALL_ADDR: {
11871                                 MonoMethod *cmethod;
11872                                 gpointer ptr;
11873
11874                                 CHECK_STACK_OVF (1);
11875                                 CHECK_OPSIZE (6);
11876                                 token = read32 (ip + 2);
11877
11878                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11879
11880                                 if (cfg->compile_aot) {
11881                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11882                                                 /*
11883                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11884                                                  * before the call, its not needed when using direct pinvoke.
11885                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11886                                                  * on platforms which don't support dlopen ().
11887                                                  */
11888                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11889                                         } else {
11890                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11891                                         }
11892                                 } else {
11893                                         ptr = mono_lookup_internal_call (cmethod);
11894                                         g_assert (ptr);
11895                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11896                                 }
11897                                 *sp++ = ins;
11898                                 ip += 6;
11899                                 break;
11900                         }
11901                         case CEE_MONO_VTADDR: {
11902                                 MonoInst *src_var, *src;
11903
11904                                 CHECK_STACK (1);
11905                                 --sp;
11906
11907                                 // FIXME:
11908                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11909                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11910                                 *sp++ = src;
11911                                 ip += 2;
11912                                 break;
11913                         }
11914                         case CEE_MONO_NEWOBJ: {
11915                                 MonoInst *iargs [2];
11916
11917                                 CHECK_STACK_OVF (1);
11918                                 CHECK_OPSIZE (6);
11919                                 token = read32 (ip + 2);
11920                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11921                                 mono_class_init (klass);
11922                                 NEW_DOMAINCONST (cfg, iargs [0]);
11923                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11924                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11925                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11926                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11927                                 ip += 6;
11928                                 inline_costs += 10 * num_calls++;
11929                                 break;
11930                         }
11931                         case CEE_MONO_OBJADDR:
11932                                 CHECK_STACK (1);
11933                                 --sp;
11934                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11935                                 ins->dreg = alloc_ireg_mp (cfg);
11936                                 ins->sreg1 = sp [0]->dreg;
11937                                 ins->type = STACK_MP;
11938                                 MONO_ADD_INS (cfg->cbb, ins);
11939                                 *sp++ = ins;
11940                                 ip += 2;
11941                                 break;
11942                         case CEE_MONO_LDNATIVEOBJ:
11943                                 /*
11944                                  * Similar to LDOBJ, but instead load the unmanaged
11945                                  * representation of the vtype to the stack.
11946                                  */
11947                                 CHECK_STACK (1);
11948                                 CHECK_OPSIZE (6);
11949                                 --sp;
11950                                 token = read32 (ip + 2);
11951                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11952                                 g_assert (klass->valuetype);
11953                                 mono_class_init (klass);
11954
11955                                 {
11956                                         MonoInst *src, *dest, *temp;
11957
11958                                         src = sp [0];
11959                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11960                                         temp->backend.is_pinvoke = 1;
11961                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11962                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
11963
11964                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11965                                         dest->type = STACK_VTYPE;
11966                                         dest->klass = klass;
11967
11968                                         *sp ++ = dest;
11969                                         ip += 6;
11970                                 }
11971                                 break;
11972                         case CEE_MONO_RETOBJ: {
11973                                 /*
11974                                  * Same as RET, but return the native representation of a vtype
11975                                  * to the caller.
11976                                  */
11977                                 g_assert (cfg->ret);
11978                                 g_assert (mono_method_signature (method)->pinvoke);
11979                                 CHECK_STACK (1);
11980                                 --sp;
11981
11982                                 CHECK_OPSIZE (6);
11983                                 token = read32 (ip + 2);
11984                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11985
11986                                 if (!cfg->vret_addr) {
11987                                         g_assert (cfg->ret_var_is_local);
11988
11989                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11990                                 } else {
11991                                         EMIT_NEW_RETLOADA (cfg, ins);
11992                                 }
11993                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
11994
11995                                 if (sp != stack_start)
11996                                         UNVERIFIED;
11997
11998                                 MONO_INST_NEW (cfg, ins, OP_BR);
11999                                 ins->inst_target_bb = end_bblock;
12000                                 MONO_ADD_INS (cfg->cbb, ins);
12001                                 link_bblock (cfg, cfg->cbb, end_bblock);
12002                                 start_new_bblock = 1;
12003                                 ip += 6;
12004                                 break;
12005                         }
12006                         case CEE_MONO_SAVE_LMF:
12007                         case CEE_MONO_RESTORE_LMF:
12008                                 ip += 2;
12009                                 break;
12010                         case CEE_MONO_CLASSCONST:
12011                                 CHECK_STACK_OVF (1);
12012                                 CHECK_OPSIZE (6);
12013                                 token = read32 (ip + 2);
12014                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12015                                 *sp++ = ins;
12016                                 ip += 6;
12017                                 inline_costs += 10 * num_calls++;
12018                                 break;
12019                         case CEE_MONO_NOT_TAKEN:
12020                                 cfg->cbb->out_of_line = TRUE;
12021                                 ip += 2;
12022                                 break;
12023                         case CEE_MONO_TLS: {
12024                                 MonoTlsKey key;
12025
12026                                 CHECK_STACK_OVF (1);
12027                                 CHECK_OPSIZE (6);
12028                                 key = (MonoTlsKey)read32 (ip + 2);
12029                                 g_assert (key < TLS_KEY_NUM);
12030
12031                                 ins = mono_create_tls_get (cfg, key);
12032                                 g_assert (ins);
12033                                 ins->type = STACK_PTR;
12034                                 *sp++ = ins;
12035                                 ip += 6;
12036                                 break;
12037                         }
12038                         case CEE_MONO_DYN_CALL: {
12039                                 MonoCallInst *call;
12040
12041                                 /* It would be easier to call a trampoline, but that would put an
12042                                  * extra frame on the stack, confusing exception handling. So
12043                                  * implement it inline using an opcode for now.
12044                                  */
12045
12046                                 if (!cfg->dyn_call_var) {
12047                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12048                                         /* prevent it from being register allocated */
12049                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12050                                 }
12051
12052                                 /* Has to use a call inst since it local regalloc expects it */
12053                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12054                                 ins = (MonoInst*)call;
12055                                 sp -= 2;
12056                                 ins->sreg1 = sp [0]->dreg;
12057                                 ins->sreg2 = sp [1]->dreg;
12058                                 MONO_ADD_INS (cfg->cbb, ins);
12059
12060                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12061
12062                                 ip += 2;
12063                                 inline_costs += 10 * num_calls++;
12064
12065                                 break;
12066                         }
12067                         case CEE_MONO_MEMORY_BARRIER: {
12068                                 CHECK_OPSIZE (6);
12069                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12070                                 ip += 6;
12071                                 break;
12072                         }
12073                         case CEE_MONO_ATOMIC_STORE_I4: {
12074                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12075
12076                                 CHECK_OPSIZE (6);
12077                                 CHECK_STACK (2);
12078                                 sp -= 2;
12079
12080                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12081                                 ins->dreg = sp [0]->dreg;
12082                                 ins->sreg1 = sp [1]->dreg;
12083                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12084                                 MONO_ADD_INS (cfg->cbb, ins);
12085
12086                                 ip += 6;
12087                                 break;
12088                         }
12089                         case CEE_MONO_JIT_ATTACH: {
12090                                 MonoInst *args [16], *domain_ins;
12091                                 MonoInst *ad_ins, *jit_tls_ins;
12092                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12093
12094                                 g_assert (!mono_threads_is_coop_enabled ());
12095
12096                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12097
12098                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12099                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12100
12101                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12102                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
12103
12104                                 if (ad_ins && jit_tls_ins) {
12105                                         NEW_BBLOCK (cfg, next_bb);
12106                                         NEW_BBLOCK (cfg, call_bb);
12107
12108                                         if (cfg->compile_aot) {
12109                                                 /* AOT code is only used in the root domain */
12110                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12111                                         } else {
12112                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12113                                         }
12114                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12115                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12116
12117                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12118                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12119
12120                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12121                                         MONO_START_BB (cfg, call_bb);
12122                                 }
12123
12124                                 /* AOT code is only used in the root domain */
12125                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12126                                 if (cfg->compile_aot) {
12127                                         MonoInst *addr;
12128
12129                                         /*
12130                                          * This is called on unattached threads, so it cannot go through the trampoline
12131                                          * infrastructure. Use an indirect call through a got slot initialized at load time
12132                                          * instead.
12133                                          */
12134                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
12135                                         ins = mono_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
12136                                 } else {
12137                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12138                                 }
12139                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12140
12141                                 if (next_bb)
12142                                         MONO_START_BB (cfg, next_bb);
12143
12144                                 ip += 2;
12145                                 break;
12146                         }
12147                         case CEE_MONO_JIT_DETACH: {
12148                                 MonoInst *args [16];
12149
12150                                 /* Restore the original domain */
12151                                 dreg = alloc_ireg (cfg);
12152                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12153                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12154                                 ip += 2;
12155                                 break;
12156                         }
12157                         case CEE_MONO_CALLI_EXTRA_ARG: {
12158                                 MonoInst *addr;
12159                                 MonoMethodSignature *fsig;
12160                                 MonoInst *arg;
12161
12162                                 /*
12163                                  * This is the same as CEE_CALLI, but passes an additional argument
12164                                  * to the called method in llvmonly mode.
12165                                  * This is only used by delegate invoke wrappers to call the
12166                                  * actual delegate method.
12167                                  */
12168                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12169
12170                                 CHECK_OPSIZE (6);
12171                                 token = read32 (ip + 2);
12172
12173                                 ins = NULL;
12174
12175                                 cmethod = NULL;
12176                                 CHECK_STACK (1);
12177                                 --sp;
12178                                 addr = *sp;
12179                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12180                                 CHECK_CFG_ERROR;
12181
12182                                 if (cfg->llvm_only)
12183                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12184
12185                                 n = fsig->param_count + fsig->hasthis + 1;
12186
12187                                 CHECK_STACK (n);
12188
12189                                 sp -= n;
12190                                 arg = sp [n - 1];
12191
12192                                 if (cfg->llvm_only) {
12193                                         /*
12194                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12195                                          * cconv. This is set by mono_init_delegate ().
12196                                          */
12197                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12198                                                 MonoInst *callee = addr;
12199                                                 MonoInst *call, *localloc_ins;
12200                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12201                                                 int low_bit_reg = alloc_preg (cfg);
12202
12203                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12204                                                 NEW_BBLOCK (cfg, end_bb);
12205
12206                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12207                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12208                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12209
12210                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12211                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12212                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12213                                                 /*
12214                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12215                                                  */
12216                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12217                                                 ins->dreg = alloc_preg (cfg);
12218                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12219                                                 MONO_ADD_INS (cfg->cbb, ins);
12220                                                 localloc_ins = ins;
12221                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12222                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12223                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12224
12225                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12226                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12227
12228                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12229                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12230                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12231                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12232                                                 ins->dreg = call->dreg;
12233
12234                                                 MONO_START_BB (cfg, end_bb);
12235                                         } else {
12236                                                 /* Caller uses a normal calling conv */
12237
12238                                                 MonoInst *callee = addr;
12239                                                 MonoInst *call, *localloc_ins;
12240                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12241                                                 int low_bit_reg = alloc_preg (cfg);
12242
12243                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12244                                                 NEW_BBLOCK (cfg, end_bb);
12245
12246                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12247                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12248                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12249
12250                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12251                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12252                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12253                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12254                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12255                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12256                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12257                                                 MONO_ADD_INS (cfg->cbb, addr);
12258                                                 /*
12259                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12260                                                  */
12261                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12262                                                 ins->dreg = alloc_preg (cfg);
12263                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12264                                                 MONO_ADD_INS (cfg->cbb, ins);
12265                                                 localloc_ins = ins;
12266                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12267                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12268                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12269
12270                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12271                                                 ins->dreg = call->dreg;
12272                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12273
12274                                                 MONO_START_BB (cfg, end_bb);
12275                                         }
12276                                 } else {
12277                                         /* Same as CEE_CALLI */
12278                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12279                                                 /*
12280                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12281                                                  */
12282                                                 MonoInst *callee = addr;
12283
12284                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12285                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12286                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12287                                         } else {
12288                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12289                                         }
12290                                 }
12291
12292                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12293                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12294
12295                                 CHECK_CFG_EXCEPTION;
12296
12297                                 ip += 6;
12298                                 ins_flag = 0;
12299                                 constrained_class = NULL;
12300                                 break;
12301                         }
12302                         case CEE_MONO_LDDOMAIN:
12303                                 CHECK_STACK_OVF (1);
12304                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12305                                 ip += 2;
12306                                 *sp++ = ins;
12307                                 break;
12308                         case CEE_MONO_GET_LAST_ERROR:
12309                                 CHECK_OPSIZE (2);
12310                                 CHECK_STACK_OVF (1);
12311
12312                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12313                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12314                                 ins->type = STACK_I4;
12315                                 MONO_ADD_INS (cfg->cbb, ins);
12316
12317                                 ip += 2;
12318                                 *sp++ = ins;
12319                                 break;
12320                         default:
12321                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12322                                 break;
12323                         }
12324                         break;
12325                 }
12326
12327                 case CEE_PREFIX1: {
12328                         CHECK_OPSIZE (2);
12329                         switch (ip [1]) {
12330                         case CEE_ARGLIST: {
12331                                 /* somewhat similar to LDTOKEN */
12332                                 MonoInst *addr, *vtvar;
12333                                 CHECK_STACK_OVF (1);
12334                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12335
12336                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12337                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12338
12339                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12340                                 ins->type = STACK_VTYPE;
12341                                 ins->klass = mono_defaults.argumenthandle_class;
12342                                 *sp++ = ins;
12343                                 ip += 2;
12344                                 break;
12345                         }
12346                         case CEE_CEQ:
12347                         case CEE_CGT:
12348                         case CEE_CGT_UN:
12349                         case CEE_CLT:
12350                         case CEE_CLT_UN: {
12351                                 MonoInst *cmp, *arg1, *arg2;
12352
12353                                 CHECK_STACK (2);
12354                                 sp -= 2;
12355                                 arg1 = sp [0];
12356                                 arg2 = sp [1];
12357
12358                                 /*
12359                                  * The following transforms:
12360                                  *    CEE_CEQ    into OP_CEQ
12361                                  *    CEE_CGT    into OP_CGT
12362                                  *    CEE_CGT_UN into OP_CGT_UN
12363                                  *    CEE_CLT    into OP_CLT
12364                                  *    CEE_CLT_UN into OP_CLT_UN
12365                                  */
12366                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12367
12368                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12369                                 cmp->sreg1 = arg1->dreg;
12370                                 cmp->sreg2 = arg2->dreg;
12371                                 type_from_op (cfg, cmp, arg1, arg2);
12372                                 CHECK_TYPE (cmp);
12373                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12374                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12375                                         cmp->opcode = OP_LCOMPARE;
12376                                 else if (arg1->type == STACK_R4)
12377                                         cmp->opcode = OP_RCOMPARE;
12378                                 else if (arg1->type == STACK_R8)
12379                                         cmp->opcode = OP_FCOMPARE;
12380                                 else
12381                                         cmp->opcode = OP_ICOMPARE;
12382                                 MONO_ADD_INS (cfg->cbb, cmp);
12383                                 ins->type = STACK_I4;
12384                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12385                                 type_from_op (cfg, ins, arg1, arg2);
12386
12387                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12388                                         /*
12389                                          * The backends expect the fceq opcodes to do the
12390                                          * comparison too.
12391                                          */
12392                                         ins->sreg1 = cmp->sreg1;
12393                                         ins->sreg2 = cmp->sreg2;
12394                                         NULLIFY_INS (cmp);
12395                                 }
12396                                 MONO_ADD_INS (cfg->cbb, ins);
12397                                 *sp++ = ins;
12398                                 ip += 2;
12399                                 break;
12400                         }
12401                         case CEE_LDFTN: {
12402                                 MonoInst *argconst;
12403                                 MonoMethod *cil_method;
12404
12405                                 CHECK_STACK_OVF (1);
12406                                 CHECK_OPSIZE (6);
12407                                 n = read32 (ip + 2);
12408                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12409                                 CHECK_CFG_ERROR;
12410
12411                                 mono_class_init (cmethod->klass);
12412
12413                                 mono_save_token_info (cfg, image, n, cmethod);
12414
12415                                 context_used = mini_method_check_context_used (cfg, cmethod);
12416
12417                                 cil_method = cmethod;
12418                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12419                                         emit_method_access_failure (cfg, method, cil_method);
12420
12421                                 if (mono_security_core_clr_enabled ())
12422                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12423
12424                                 /*
12425                                  * Optimize the common case of ldftn+delegate creation
12426                                  */
12427                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12428                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12429                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12430                                                 MonoInst *target_ins, *handle_ins;
12431                                                 MonoMethod *invoke;
12432                                                 int invoke_context_used;
12433
12434                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12435                                                 if (!invoke || !mono_method_signature (invoke))
12436                                                         LOAD_ERROR;
12437
12438                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12439
12440                                                 target_ins = sp [-1];
12441
12442                                                 if (mono_security_core_clr_enabled ())
12443                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12444
12445                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12446                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12447                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12448                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12449                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12450                                                         }
12451                                                 }
12452
12453                                                 /* FIXME: SGEN support */
12454                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12455                                                         ip += 6;
12456                                                         if (cfg->verbose_level > 3)
12457                                                                 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));
12458                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12459                                                                 sp --;
12460                                                                 *sp = handle_ins;
12461                                                                 CHECK_CFG_EXCEPTION;
12462                                                                 ip += 5;
12463                                                                 sp ++;
12464                                                                 break;
12465                                                         }
12466                                                         ip -= 6;
12467                                                 }
12468                                         }
12469                                 }
12470
12471                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12472                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12473                                 *sp++ = ins;
12474
12475                                 ip += 6;
12476                                 inline_costs += 10 * num_calls++;
12477                                 break;
12478                         }
12479                         case CEE_LDVIRTFTN: {
12480                                 MonoInst *args [2];
12481
12482                                 CHECK_STACK (1);
12483                                 CHECK_OPSIZE (6);
12484                                 n = read32 (ip + 2);
12485                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12486                                 CHECK_CFG_ERROR;
12487
12488                                 mono_class_init (cmethod->klass);
12489
12490                                 context_used = mini_method_check_context_used (cfg, cmethod);
12491
12492                                 if (mono_security_core_clr_enabled ())
12493                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12494
12495                                 /*
12496                                  * Optimize the common case of ldvirtftn+delegate creation
12497                                  */
12498                                 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)) {
12499                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12500                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12501                                                 MonoInst *target_ins, *handle_ins;
12502                                                 MonoMethod *invoke;
12503                                                 int invoke_context_used;
12504                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12505
12506                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12507                                                 if (!invoke || !mono_method_signature (invoke))
12508                                                         LOAD_ERROR;
12509
12510                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12511
12512                                                 target_ins = sp [-1];
12513
12514                                                 if (mono_security_core_clr_enabled ())
12515                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12516
12517                                                 /* FIXME: SGEN support */
12518                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12519                                                         ip += 6;
12520                                                         if (cfg->verbose_level > 3)
12521                                                                 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));
12522                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12523                                                                 sp -= 2;
12524                                                                 *sp = handle_ins;
12525                                                                 CHECK_CFG_EXCEPTION;
12526                                                                 ip += 5;
12527                                                                 sp ++;
12528                                                                 break;
12529                                                         }
12530                                                         ip -= 6;
12531                                                 }
12532                                         }
12533                                 }
12534
12535                                 --sp;
12536                                 args [0] = *sp;
12537
12538                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12539                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12540
12541                                 if (context_used)
12542                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12543                                 else
12544                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12545
12546                                 ip += 6;
12547                                 inline_costs += 10 * num_calls++;
12548                                 break;
12549                         }
12550                         case CEE_LDARG:
12551                                 CHECK_STACK_OVF (1);
12552                                 CHECK_OPSIZE (4);
12553                                 n = read16 (ip + 2);
12554                                 CHECK_ARG (n);
12555                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12556                                 *sp++ = ins;
12557                                 ip += 4;
12558                                 break;
12559                         case CEE_LDARGA:
12560                                 CHECK_STACK_OVF (1);
12561                                 CHECK_OPSIZE (4);
12562                                 n = read16 (ip + 2);
12563                                 CHECK_ARG (n);
12564                                 NEW_ARGLOADA (cfg, ins, n);
12565                                 MONO_ADD_INS (cfg->cbb, ins);
12566                                 *sp++ = ins;
12567                                 ip += 4;
12568                                 break;
12569                         case CEE_STARG:
12570                                 CHECK_STACK (1);
12571                                 --sp;
12572                                 CHECK_OPSIZE (4);
12573                                 n = read16 (ip + 2);
12574                                 CHECK_ARG (n);
12575                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12576                                         UNVERIFIED;
12577                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12578                                 ip += 4;
12579                                 break;
12580                         case CEE_LDLOC:
12581                                 CHECK_STACK_OVF (1);
12582                                 CHECK_OPSIZE (4);
12583                                 n = read16 (ip + 2);
12584                                 CHECK_LOCAL (n);
12585                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12586                                 *sp++ = ins;
12587                                 ip += 4;
12588                                 break;
12589                         case CEE_LDLOCA: {
12590                                 unsigned char *tmp_ip;
12591                                 CHECK_STACK_OVF (1);
12592                                 CHECK_OPSIZE (4);
12593                                 n = read16 (ip + 2);
12594                                 CHECK_LOCAL (n);
12595
12596                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12597                                         ip = tmp_ip;
12598                                         inline_costs += 1;
12599                                         break;
12600                                 }
12601
12602                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12603                                 *sp++ = ins;
12604                                 ip += 4;
12605                                 break;
12606                         }
12607                         case CEE_STLOC:
12608                                 CHECK_STACK (1);
12609                                 --sp;
12610                                 CHECK_OPSIZE (4);
12611                                 n = read16 (ip + 2);
12612                                 CHECK_LOCAL (n);
12613                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12614                                         UNVERIFIED;
12615                                 emit_stloc_ir (cfg, sp, header, n);
12616                                 ip += 4;
12617                                 inline_costs += 1;
12618                                 break;
12619                         case CEE_LOCALLOC: {
12620                                 CHECK_STACK (1);
12621                                 MonoBasicBlock *non_zero_bb, *end_bb;
12622                                 int alloc_ptr = alloc_preg (cfg);
12623                                 --sp;
12624                                 if (sp != stack_start)
12625                                         UNVERIFIED;
12626                                 if (cfg->method != method)
12627                                         /*
12628                                          * Inlining this into a loop in a parent could lead to
12629                                          * stack overflows which is different behavior than the
12630                                          * non-inlined case, thus disable inlining in this case.
12631                                          */
12632                                         INLINE_FAILURE("localloc");
12633
12634                                 NEW_BBLOCK (cfg, non_zero_bb);
12635                                 NEW_BBLOCK (cfg, end_bb);
12636
12637                                 /* if size != zero */
12638                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12639                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12640
12641                                 //size is zero, so result is NULL
12642                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12643                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12644
12645                                 MONO_START_BB (cfg, non_zero_bb);
12646                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12647                                 ins->dreg = alloc_ptr;
12648                                 ins->sreg1 = sp [0]->dreg;
12649                                 ins->type = STACK_PTR;
12650                                 MONO_ADD_INS (cfg->cbb, ins);
12651
12652                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12653                                 if (init_locals)
12654                                         ins->flags |= MONO_INST_INIT;
12655
12656                                 MONO_START_BB (cfg, end_bb);
12657                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12658                                 ins->type = STACK_PTR;
12659
12660                                 *sp++ = ins;
12661                                 ip += 2;
12662                                 break;
12663                         }
12664                         case CEE_ENDFILTER: {
12665                                 MonoExceptionClause *clause, *nearest;
12666                                 int cc;
12667
12668                                 CHECK_STACK (1);
12669                                 --sp;
12670                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12671                                         UNVERIFIED;
12672                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12673                                 ins->sreg1 = (*sp)->dreg;
12674                                 MONO_ADD_INS (cfg->cbb, ins);
12675                                 start_new_bblock = 1;
12676                                 ip += 2;
12677
12678                                 nearest = NULL;
12679                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12680                                         clause = &header->clauses [cc];
12681                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12682                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12683                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12684                                                 nearest = clause;
12685                                 }
12686                                 g_assert (nearest);
12687                                 if ((ip - header->code) != nearest->handler_offset)
12688                                         UNVERIFIED;
12689
12690                                 break;
12691                         }
12692                         case CEE_UNALIGNED_:
12693                                 ins_flag |= MONO_INST_UNALIGNED;
12694                                 /* FIXME: record alignment? we can assume 1 for now */
12695                                 CHECK_OPSIZE (3);
12696                                 ip += 3;
12697                                 break;
12698                         case CEE_VOLATILE_:
12699                                 ins_flag |= MONO_INST_VOLATILE;
12700                                 ip += 2;
12701                                 break;
12702                         case CEE_TAIL_:
12703                                 ins_flag   |= MONO_INST_TAILCALL;
12704                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12705                                 /* Can't inline tail calls at this time */
12706                                 inline_costs += 100000;
12707                                 ip += 2;
12708                                 break;
12709                         case CEE_INITOBJ:
12710                                 CHECK_STACK (1);
12711                                 --sp;
12712                                 CHECK_OPSIZE (6);
12713                                 token = read32 (ip + 2);
12714                                 klass = mini_get_class (method, token, generic_context);
12715                                 CHECK_TYPELOAD (klass);
12716                                 if (generic_class_is_reference_type (cfg, klass))
12717                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12718                                 else
12719                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12720                                 ip += 6;
12721                                 inline_costs += 1;
12722                                 break;
12723                         case CEE_CONSTRAINED_:
12724                                 CHECK_OPSIZE (6);
12725                                 token = read32 (ip + 2);
12726                                 constrained_class = mini_get_class (method, token, generic_context);
12727                                 CHECK_TYPELOAD (constrained_class);
12728                                 ip += 6;
12729                                 break;
12730                         case CEE_CPBLK:
12731                         case CEE_INITBLK: {
12732                                 MonoInst *iargs [3];
12733                                 CHECK_STACK (3);
12734                                 sp -= 3;
12735
12736                                 /* Skip optimized paths for volatile operations. */
12737                                 if ((ip [1] == CEE_CPBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
12738                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
12739                                 } else if ((ip [1] == CEE_INITBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
12740                                         /* emit_memset only works when val == 0 */
12741                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
12742                                 } else {
12743                                         MonoInst *call;
12744                                         iargs [0] = sp [0];
12745                                         iargs [1] = sp [1];
12746                                         iargs [2] = sp [2];
12747                                         if (ip [1] == CEE_CPBLK) {
12748                                                 /*
12749                                                  * FIXME: It's unclear whether we should be emitting both the acquire
12750                                                  * and release barriers for cpblk. It is technically both a load and
12751                                                  * store operation, so it seems like that's the sensible thing to do.
12752                                                  *
12753                                                  * FIXME: We emit full barriers on both sides of the operation for
12754                                                  * simplicity. We should have a separate atomic memcpy method instead.
12755                                                  */
12756                                                 MonoMethod *memcpy_method = get_memcpy_method ();
12757
12758                                                 if (ins_flag & MONO_INST_VOLATILE)
12759                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12760
12761                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
12762                                                 call->flags |= ins_flag;
12763
12764                                                 if (ins_flag & MONO_INST_VOLATILE)
12765                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12766                                         } else {
12767                                                 MonoMethod *memset_method = get_memset_method ();
12768                                                 if (ins_flag & MONO_INST_VOLATILE) {
12769                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
12770                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
12771                                                 }
12772                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
12773                                                 call->flags |= ins_flag;
12774                                         }
12775                                 }
12776                                 ip += 2;
12777                                 ins_flag = 0;
12778                                 inline_costs += 1;
12779                                 break;
12780                         }
12781                         case CEE_NO_:
12782                                 CHECK_OPSIZE (3);
12783                                 if (ip [2] & 0x1)
12784                                         ins_flag |= MONO_INST_NOTYPECHECK;
12785                                 if (ip [2] & 0x2)
12786                                         ins_flag |= MONO_INST_NORANGECHECK;
12787                                 /* we ignore the no-nullcheck for now since we
12788                                  * really do it explicitly only when doing callvirt->call
12789                                  */
12790                                 ip += 3;
12791                                 break;
12792                         case CEE_RETHROW: {
12793                                 MonoInst *load;
12794                                 int handler_offset = -1;
12795
12796                                 for (i = 0; i < header->num_clauses; ++i) {
12797                                         MonoExceptionClause *clause = &header->clauses [i];
12798                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12799                                                 handler_offset = clause->handler_offset;
12800                                                 break;
12801                                         }
12802                                 }
12803
12804                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12805
12806                                 if (handler_offset == -1)
12807                                         UNVERIFIED;
12808
12809                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12810                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12811                                 ins->sreg1 = load->dreg;
12812                                 MONO_ADD_INS (cfg->cbb, ins);
12813
12814                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12815                                 MONO_ADD_INS (cfg->cbb, ins);
12816
12817                                 sp = stack_start;
12818                                 link_bblock (cfg, cfg->cbb, end_bblock);
12819                                 start_new_bblock = 1;
12820                                 ip += 2;
12821                                 break;
12822                         }
12823                         case CEE_SIZEOF: {
12824                                 guint32 val;
12825                                 int ialign;
12826
12827                                 CHECK_STACK_OVF (1);
12828                                 CHECK_OPSIZE (6);
12829                                 token = read32 (ip + 2);
12830                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12831                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12832                                         CHECK_CFG_ERROR;
12833
12834                                         val = mono_type_size (type, &ialign);
12835                                 } else {
12836                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12837                                         CHECK_TYPELOAD (klass);
12838
12839                                         val = mono_type_size (&klass->byval_arg, &ialign);
12840
12841                                         if (mini_is_gsharedvt_klass (klass))
12842                                                 GSHAREDVT_FAILURE (*ip);
12843                                 }
12844                                 EMIT_NEW_ICONST (cfg, ins, val);
12845                                 *sp++= ins;
12846                                 ip += 6;
12847                                 break;
12848                         }
12849                         case CEE_REFANYTYPE: {
12850                                 MonoInst *src_var, *src;
12851
12852                                 GSHAREDVT_FAILURE (*ip);
12853
12854                                 CHECK_STACK (1);
12855                                 --sp;
12856
12857                                 // FIXME:
12858                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12859                                 if (!src_var)
12860                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12861                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12862                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12863                                 *sp++ = ins;
12864                                 ip += 2;
12865                                 break;
12866                         }
12867                         case CEE_READONLY_:
12868                                 readonly = TRUE;
12869                                 ip += 2;
12870                                 break;
12871
12872                         case CEE_UNUSED56:
12873                         case CEE_UNUSED57:
12874                         case CEE_UNUSED70:
12875                         case CEE_UNUSED:
12876                         case CEE_UNUSED99:
12877                                 UNVERIFIED;
12878
12879                         default:
12880                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12881                                 UNVERIFIED;
12882                         }
12883                         break;
12884                 }
12885                 case CEE_UNUSED58:
12886                 case CEE_UNUSED1:
12887                         UNVERIFIED;
12888
12889                 default:
12890                         g_warning ("opcode 0x%02x not handled", *ip);
12891                         UNVERIFIED;
12892                 }
12893         }
12894         if (start_new_bblock != 1)
12895                 UNVERIFIED;
12896
12897         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12898         if (cfg->cbb->next_bb) {
12899                 /* This could already be set because of inlining, #693905 */
12900                 MonoBasicBlock *bb = cfg->cbb;
12901
12902                 while (bb->next_bb)
12903                         bb = bb->next_bb;
12904                 bb->next_bb = end_bblock;
12905         } else {
12906                 cfg->cbb->next_bb = end_bblock;
12907         }
12908
12909         if (cfg->method == method && cfg->domainvar) {
12910                 MonoInst *store;
12911                 MonoInst *get_domain;
12912
12913                 cfg->cbb = init_localsbb;
12914
12915                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12916                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12917                 MONO_ADD_INS (cfg->cbb, store);
12918         }
12919
12920 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12921         if (cfg->compile_aot)
12922                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12923                 mono_get_got_var (cfg);
12924 #endif
12925
12926         if (cfg->method == method && cfg->got_var)
12927                 mono_emit_load_got_addr (cfg);
12928
12929         if (init_localsbb) {
12930                 cfg->cbb = init_localsbb;
12931                 cfg->ip = NULL;
12932                 for (i = 0; i < header->num_locals; ++i) {
12933                         emit_init_local (cfg, i, header->locals [i], init_locals);
12934                 }
12935         }
12936
12937         if (cfg->init_ref_vars && cfg->method == method) {
12938                 /* Emit initialization for ref vars */
12939                 // FIXME: Avoid duplication initialization for IL locals.
12940                 for (i = 0; i < cfg->num_varinfo; ++i) {
12941                         MonoInst *ins = cfg->varinfo [i];
12942
12943                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12944                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12945                 }
12946         }
12947
12948         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12949                 cfg->cbb = init_localsbb;
12950                 emit_push_lmf (cfg);
12951         }
12952
12953         cfg->cbb = init_localsbb;
12954         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12955
12956         if (seq_points) {
12957                 MonoBasicBlock *bb;
12958
12959                 /*
12960                  * Make seq points at backward branch targets interruptable.
12961                  */
12962                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12963                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12964                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12965         }
12966
12967         /* Add a sequence point for method entry/exit events */
12968         if (seq_points && cfg->gen_sdb_seq_points) {
12969                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12970                 MONO_ADD_INS (init_localsbb, ins);
12971                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12972                 MONO_ADD_INS (cfg->bb_exit, ins);
12973         }
12974
12975         /*
12976          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12977          * the code they refer to was dead (#11880).
12978          */
12979         if (sym_seq_points) {
12980                 for (i = 0; i < header->code_size; ++i) {
12981                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12982                                 MonoInst *ins;
12983
12984                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12985                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12986                         }
12987                 }
12988         }
12989
12990         cfg->ip = NULL;
12991
12992         if (cfg->method == method) {
12993                 MonoBasicBlock *bb;
12994                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12995                         if (bb == cfg->bb_init)
12996                                 bb->region = -1;
12997                         else
12998                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12999                         if (cfg->spvars)
13000                                 mono_create_spvar_for_region (cfg, bb->region);
13001                         if (cfg->verbose_level > 2)
13002                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13003                 }
13004         } else {
13005                 MonoBasicBlock *bb;
13006                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13007                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13008                         bb->real_offset = inline_offset;
13009                 }
13010         }
13011
13012         if (inline_costs < 0) {
13013                 char *mname;
13014
13015                 /* Method is too large */
13016                 mname = mono_method_full_name (method, TRUE);
13017                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13018                 g_free (mname);
13019         }
13020
13021         if ((cfg->verbose_level > 2) && (cfg->method == method))
13022                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13023
13024         goto cleanup;
13025
13026 mono_error_exit:
13027         g_assert (!mono_error_ok (&cfg->error));
13028         goto cleanup;
13029
13030  exception_exit:
13031         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13032         goto cleanup;
13033
13034  unverified:
13035         set_exception_type_from_invalid_il (cfg, method, ip);
13036         goto cleanup;
13037
13038  cleanup:
13039         g_slist_free (class_inits);
13040         mono_basic_block_free (original_bb);
13041         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13042         if (cfg->exception_type)
13043                 return -1;
13044         else
13045                 return inline_costs;
13046 }
13047
13048 static int
13049 store_membase_reg_to_store_membase_imm (int opcode)
13050 {
13051         switch (opcode) {
13052         case OP_STORE_MEMBASE_REG:
13053                 return OP_STORE_MEMBASE_IMM;
13054         case OP_STOREI1_MEMBASE_REG:
13055                 return OP_STOREI1_MEMBASE_IMM;
13056         case OP_STOREI2_MEMBASE_REG:
13057                 return OP_STOREI2_MEMBASE_IMM;
13058         case OP_STOREI4_MEMBASE_REG:
13059                 return OP_STOREI4_MEMBASE_IMM;
13060         case OP_STOREI8_MEMBASE_REG:
13061                 return OP_STOREI8_MEMBASE_IMM;
13062         default:
13063                 g_assert_not_reached ();
13064         }
13065
13066         return -1;
13067 }
13068
13069 int
13070 mono_op_to_op_imm (int opcode)
13071 {
13072         switch (opcode) {
13073         case OP_IADD:
13074                 return OP_IADD_IMM;
13075         case OP_ISUB:
13076                 return OP_ISUB_IMM;
13077         case OP_IDIV:
13078                 return OP_IDIV_IMM;
13079         case OP_IDIV_UN:
13080                 return OP_IDIV_UN_IMM;
13081         case OP_IREM:
13082                 return OP_IREM_IMM;
13083         case OP_IREM_UN:
13084                 return OP_IREM_UN_IMM;
13085         case OP_IMUL:
13086                 return OP_IMUL_IMM;
13087         case OP_IAND:
13088                 return OP_IAND_IMM;
13089         case OP_IOR:
13090                 return OP_IOR_IMM;
13091         case OP_IXOR:
13092                 return OP_IXOR_IMM;
13093         case OP_ISHL:
13094                 return OP_ISHL_IMM;
13095         case OP_ISHR:
13096                 return OP_ISHR_IMM;
13097         case OP_ISHR_UN:
13098                 return OP_ISHR_UN_IMM;
13099
13100         case OP_LADD:
13101                 return OP_LADD_IMM;
13102         case OP_LSUB:
13103                 return OP_LSUB_IMM;
13104         case OP_LAND:
13105                 return OP_LAND_IMM;
13106         case OP_LOR:
13107                 return OP_LOR_IMM;
13108         case OP_LXOR:
13109                 return OP_LXOR_IMM;
13110         case OP_LSHL:
13111                 return OP_LSHL_IMM;
13112         case OP_LSHR:
13113                 return OP_LSHR_IMM;
13114         case OP_LSHR_UN:
13115                 return OP_LSHR_UN_IMM;
13116 #if SIZEOF_REGISTER == 8
13117         case OP_LREM:
13118                 return OP_LREM_IMM;
13119 #endif
13120
13121         case OP_COMPARE:
13122                 return OP_COMPARE_IMM;
13123         case OP_ICOMPARE:
13124                 return OP_ICOMPARE_IMM;
13125         case OP_LCOMPARE:
13126                 return OP_LCOMPARE_IMM;
13127
13128         case OP_STORE_MEMBASE_REG:
13129                 return OP_STORE_MEMBASE_IMM;
13130         case OP_STOREI1_MEMBASE_REG:
13131                 return OP_STOREI1_MEMBASE_IMM;
13132         case OP_STOREI2_MEMBASE_REG:
13133                 return OP_STOREI2_MEMBASE_IMM;
13134         case OP_STOREI4_MEMBASE_REG:
13135                 return OP_STOREI4_MEMBASE_IMM;
13136
13137 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13138         case OP_X86_PUSH:
13139                 return OP_X86_PUSH_IMM;
13140         case OP_X86_COMPARE_MEMBASE_REG:
13141                 return OP_X86_COMPARE_MEMBASE_IMM;
13142 #endif
13143 #if defined(TARGET_AMD64)
13144         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13145                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13146 #endif
13147         case OP_VOIDCALL_REG:
13148                 return OP_VOIDCALL;
13149         case OP_CALL_REG:
13150                 return OP_CALL;
13151         case OP_LCALL_REG:
13152                 return OP_LCALL;
13153         case OP_FCALL_REG:
13154                 return OP_FCALL;
13155         case OP_LOCALLOC:
13156                 return OP_LOCALLOC_IMM;
13157         }
13158
13159         return -1;
13160 }
13161
13162 static int
13163 ldind_to_load_membase (int opcode)
13164 {
13165         switch (opcode) {
13166         case CEE_LDIND_I1:
13167                 return OP_LOADI1_MEMBASE;
13168         case CEE_LDIND_U1:
13169                 return OP_LOADU1_MEMBASE;
13170         case CEE_LDIND_I2:
13171                 return OP_LOADI2_MEMBASE;
13172         case CEE_LDIND_U2:
13173                 return OP_LOADU2_MEMBASE;
13174         case CEE_LDIND_I4:
13175                 return OP_LOADI4_MEMBASE;
13176         case CEE_LDIND_U4:
13177                 return OP_LOADU4_MEMBASE;
13178         case CEE_LDIND_I:
13179                 return OP_LOAD_MEMBASE;
13180         case CEE_LDIND_REF:
13181                 return OP_LOAD_MEMBASE;
13182         case CEE_LDIND_I8:
13183                 return OP_LOADI8_MEMBASE;
13184         case CEE_LDIND_R4:
13185                 return OP_LOADR4_MEMBASE;
13186         case CEE_LDIND_R8:
13187                 return OP_LOADR8_MEMBASE;
13188         default:
13189                 g_assert_not_reached ();
13190         }
13191
13192         return -1;
13193 }
13194
13195 static int
13196 stind_to_store_membase (int opcode)
13197 {
13198         switch (opcode) {
13199         case CEE_STIND_I1:
13200                 return OP_STOREI1_MEMBASE_REG;
13201         case CEE_STIND_I2:
13202                 return OP_STOREI2_MEMBASE_REG;
13203         case CEE_STIND_I4:
13204                 return OP_STOREI4_MEMBASE_REG;
13205         case CEE_STIND_I:
13206         case CEE_STIND_REF:
13207                 return OP_STORE_MEMBASE_REG;
13208         case CEE_STIND_I8:
13209                 return OP_STOREI8_MEMBASE_REG;
13210         case CEE_STIND_R4:
13211                 return OP_STORER4_MEMBASE_REG;
13212         case CEE_STIND_R8:
13213                 return OP_STORER8_MEMBASE_REG;
13214         default:
13215                 g_assert_not_reached ();
13216         }
13217
13218         return -1;
13219 }
13220
13221 int
13222 mono_load_membase_to_load_mem (int opcode)
13223 {
13224         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13225 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13226         switch (opcode) {
13227         case OP_LOAD_MEMBASE:
13228                 return OP_LOAD_MEM;
13229         case OP_LOADU1_MEMBASE:
13230                 return OP_LOADU1_MEM;
13231         case OP_LOADU2_MEMBASE:
13232                 return OP_LOADU2_MEM;
13233         case OP_LOADI4_MEMBASE:
13234                 return OP_LOADI4_MEM;
13235         case OP_LOADU4_MEMBASE:
13236                 return OP_LOADU4_MEM;
13237 #if SIZEOF_REGISTER == 8
13238         case OP_LOADI8_MEMBASE:
13239                 return OP_LOADI8_MEM;
13240 #endif
13241         }
13242 #endif
13243
13244         return -1;
13245 }
13246
13247 static inline int
13248 op_to_op_dest_membase (int store_opcode, int opcode)
13249 {
13250 #if defined(TARGET_X86)
13251         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13252                 return -1;
13253
13254         switch (opcode) {
13255         case OP_IADD:
13256                 return OP_X86_ADD_MEMBASE_REG;
13257         case OP_ISUB:
13258                 return OP_X86_SUB_MEMBASE_REG;
13259         case OP_IAND:
13260                 return OP_X86_AND_MEMBASE_REG;
13261         case OP_IOR:
13262                 return OP_X86_OR_MEMBASE_REG;
13263         case OP_IXOR:
13264                 return OP_X86_XOR_MEMBASE_REG;
13265         case OP_ADD_IMM:
13266         case OP_IADD_IMM:
13267                 return OP_X86_ADD_MEMBASE_IMM;
13268         case OP_SUB_IMM:
13269         case OP_ISUB_IMM:
13270                 return OP_X86_SUB_MEMBASE_IMM;
13271         case OP_AND_IMM:
13272         case OP_IAND_IMM:
13273                 return OP_X86_AND_MEMBASE_IMM;
13274         case OP_OR_IMM:
13275         case OP_IOR_IMM:
13276                 return OP_X86_OR_MEMBASE_IMM;
13277         case OP_XOR_IMM:
13278         case OP_IXOR_IMM:
13279                 return OP_X86_XOR_MEMBASE_IMM;
13280         case OP_MOVE:
13281                 return OP_NOP;
13282         }
13283 #endif
13284
13285 #if defined(TARGET_AMD64)
13286         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13287                 return -1;
13288
13289         switch (opcode) {
13290         case OP_IADD:
13291                 return OP_X86_ADD_MEMBASE_REG;
13292         case OP_ISUB:
13293                 return OP_X86_SUB_MEMBASE_REG;
13294         case OP_IAND:
13295                 return OP_X86_AND_MEMBASE_REG;
13296         case OP_IOR:
13297                 return OP_X86_OR_MEMBASE_REG;
13298         case OP_IXOR:
13299                 return OP_X86_XOR_MEMBASE_REG;
13300         case OP_IADD_IMM:
13301                 return OP_X86_ADD_MEMBASE_IMM;
13302         case OP_ISUB_IMM:
13303                 return OP_X86_SUB_MEMBASE_IMM;
13304         case OP_IAND_IMM:
13305                 return OP_X86_AND_MEMBASE_IMM;
13306         case OP_IOR_IMM:
13307                 return OP_X86_OR_MEMBASE_IMM;
13308         case OP_IXOR_IMM:
13309                 return OP_X86_XOR_MEMBASE_IMM;
13310         case OP_LADD:
13311                 return OP_AMD64_ADD_MEMBASE_REG;
13312         case OP_LSUB:
13313                 return OP_AMD64_SUB_MEMBASE_REG;
13314         case OP_LAND:
13315                 return OP_AMD64_AND_MEMBASE_REG;
13316         case OP_LOR:
13317                 return OP_AMD64_OR_MEMBASE_REG;
13318         case OP_LXOR:
13319                 return OP_AMD64_XOR_MEMBASE_REG;
13320         case OP_ADD_IMM:
13321         case OP_LADD_IMM:
13322                 return OP_AMD64_ADD_MEMBASE_IMM;
13323         case OP_SUB_IMM:
13324         case OP_LSUB_IMM:
13325                 return OP_AMD64_SUB_MEMBASE_IMM;
13326         case OP_AND_IMM:
13327         case OP_LAND_IMM:
13328                 return OP_AMD64_AND_MEMBASE_IMM;
13329         case OP_OR_IMM:
13330         case OP_LOR_IMM:
13331                 return OP_AMD64_OR_MEMBASE_IMM;
13332         case OP_XOR_IMM:
13333         case OP_LXOR_IMM:
13334                 return OP_AMD64_XOR_MEMBASE_IMM;
13335         case OP_MOVE:
13336                 return OP_NOP;
13337         }
13338 #endif
13339
13340         return -1;
13341 }
13342
13343 static inline int
13344 op_to_op_store_membase (int store_opcode, int opcode)
13345 {
13346 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13347         switch (opcode) {
13348         case OP_ICEQ:
13349                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13350                         return OP_X86_SETEQ_MEMBASE;
13351         case OP_CNE:
13352                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13353                         return OP_X86_SETNE_MEMBASE;
13354         }
13355 #endif
13356
13357         return -1;
13358 }
13359
13360 static inline int
13361 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13362 {
13363 #ifdef TARGET_X86
13364         /* FIXME: This has sign extension issues */
13365         /*
13366         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13367                 return OP_X86_COMPARE_MEMBASE8_IMM;
13368         */
13369
13370         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13371                 return -1;
13372
13373         switch (opcode) {
13374         case OP_X86_PUSH:
13375                 return OP_X86_PUSH_MEMBASE;
13376         case OP_COMPARE_IMM:
13377         case OP_ICOMPARE_IMM:
13378                 return OP_X86_COMPARE_MEMBASE_IMM;
13379         case OP_COMPARE:
13380         case OP_ICOMPARE:
13381                 return OP_X86_COMPARE_MEMBASE_REG;
13382         }
13383 #endif
13384
13385 #ifdef TARGET_AMD64
13386         /* FIXME: This has sign extension issues */
13387         /*
13388         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13389                 return OP_X86_COMPARE_MEMBASE8_IMM;
13390         */
13391
13392         switch (opcode) {
13393         case OP_X86_PUSH:
13394                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13395                         return OP_X86_PUSH_MEMBASE;
13396                 break;
13397                 /* FIXME: This only works for 32 bit immediates
13398         case OP_COMPARE_IMM:
13399         case OP_LCOMPARE_IMM:
13400                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13401                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13402                 */
13403         case OP_ICOMPARE_IMM:
13404                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13405                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13406                 break;
13407         case OP_COMPARE:
13408         case OP_LCOMPARE:
13409                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13410                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13411                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13412                         return OP_AMD64_COMPARE_MEMBASE_REG;
13413                 break;
13414         case OP_ICOMPARE:
13415                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13416                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13417                 break;
13418         }
13419 #endif
13420
13421         return -1;
13422 }
13423
13424 static inline int
13425 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13426 {
13427 #ifdef TARGET_X86
13428         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13429                 return -1;
13430
13431         switch (opcode) {
13432         case OP_COMPARE:
13433         case OP_ICOMPARE:
13434                 return OP_X86_COMPARE_REG_MEMBASE;
13435         case OP_IADD:
13436                 return OP_X86_ADD_REG_MEMBASE;
13437         case OP_ISUB:
13438                 return OP_X86_SUB_REG_MEMBASE;
13439         case OP_IAND:
13440                 return OP_X86_AND_REG_MEMBASE;
13441         case OP_IOR:
13442                 return OP_X86_OR_REG_MEMBASE;
13443         case OP_IXOR:
13444                 return OP_X86_XOR_REG_MEMBASE;
13445         }
13446 #endif
13447
13448 #ifdef TARGET_AMD64
13449         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13450                 switch (opcode) {
13451                 case OP_ICOMPARE:
13452                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13453                 case OP_IADD:
13454                         return OP_X86_ADD_REG_MEMBASE;
13455                 case OP_ISUB:
13456                         return OP_X86_SUB_REG_MEMBASE;
13457                 case OP_IAND:
13458                         return OP_X86_AND_REG_MEMBASE;
13459                 case OP_IOR:
13460                         return OP_X86_OR_REG_MEMBASE;
13461                 case OP_IXOR:
13462                         return OP_X86_XOR_REG_MEMBASE;
13463                 }
13464         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13465                 switch (opcode) {
13466                 case OP_COMPARE:
13467                 case OP_LCOMPARE:
13468                         return OP_AMD64_COMPARE_REG_MEMBASE;
13469                 case OP_LADD:
13470                         return OP_AMD64_ADD_REG_MEMBASE;
13471                 case OP_LSUB:
13472                         return OP_AMD64_SUB_REG_MEMBASE;
13473                 case OP_LAND:
13474                         return OP_AMD64_AND_REG_MEMBASE;
13475                 case OP_LOR:
13476                         return OP_AMD64_OR_REG_MEMBASE;
13477                 case OP_LXOR:
13478                         return OP_AMD64_XOR_REG_MEMBASE;
13479                 }
13480         }
13481 #endif
13482
13483         return -1;
13484 }
13485
13486 int
13487 mono_op_to_op_imm_noemul (int opcode)
13488 {
13489         switch (opcode) {
13490 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13491         case OP_LSHR:
13492         case OP_LSHL:
13493         case OP_LSHR_UN:
13494                 return -1;
13495 #endif
13496 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13497         case OP_IDIV:
13498         case OP_IDIV_UN:
13499         case OP_IREM:
13500         case OP_IREM_UN:
13501                 return -1;
13502 #endif
13503 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13504         case OP_IMUL:
13505                 return -1;
13506 #endif
13507         default:
13508                 return mono_op_to_op_imm (opcode);
13509         }
13510 }
13511
13512 /**
13513  * mono_handle_global_vregs:
13514  *
13515  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13516  * for them.
13517  */
13518 void
13519 mono_handle_global_vregs (MonoCompile *cfg)
13520 {
13521         gint32 *vreg_to_bb;
13522         MonoBasicBlock *bb;
13523         int i, pos;
13524
13525         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13526
13527 #ifdef MONO_ARCH_SIMD_INTRINSICS
13528         if (cfg->uses_simd_intrinsics)
13529                 mono_simd_simplify_indirection (cfg);
13530 #endif
13531
13532         /* Find local vregs used in more than one bb */
13533         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13534                 MonoInst *ins = bb->code;
13535                 int block_num = bb->block_num;
13536
13537                 if (cfg->verbose_level > 2)
13538                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13539
13540                 cfg->cbb = bb;
13541                 for (; ins; ins = ins->next) {
13542                         const char *spec = INS_INFO (ins->opcode);
13543                         int regtype = 0, regindex;
13544                         gint32 prev_bb;
13545
13546                         if (G_UNLIKELY (cfg->verbose_level > 2))
13547                                 mono_print_ins (ins);
13548
13549                         g_assert (ins->opcode >= MONO_CEE_LAST);
13550
13551                         for (regindex = 0; regindex < 4; regindex ++) {
13552                                 int vreg = 0;
13553
13554                                 if (regindex == 0) {
13555                                         regtype = spec [MONO_INST_DEST];
13556                                         if (regtype == ' ')
13557                                                 continue;
13558                                         vreg = ins->dreg;
13559                                 } else if (regindex == 1) {
13560                                         regtype = spec [MONO_INST_SRC1];
13561                                         if (regtype == ' ')
13562                                                 continue;
13563                                         vreg = ins->sreg1;
13564                                 } else if (regindex == 2) {
13565                                         regtype = spec [MONO_INST_SRC2];
13566                                         if (regtype == ' ')
13567                                                 continue;
13568                                         vreg = ins->sreg2;
13569                                 } else if (regindex == 3) {
13570                                         regtype = spec [MONO_INST_SRC3];
13571                                         if (regtype == ' ')
13572                                                 continue;
13573                                         vreg = ins->sreg3;
13574                                 }
13575
13576 #if SIZEOF_REGISTER == 4
13577                                 /* In the LLVM case, the long opcodes are not decomposed */
13578                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13579                                         /*
13580                                          * Since some instructions reference the original long vreg,
13581                                          * and some reference the two component vregs, it is quite hard
13582                                          * to determine when it needs to be global. So be conservative.
13583                                          */
13584                                         if (!get_vreg_to_inst (cfg, vreg)) {
13585                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13586
13587                                                 if (cfg->verbose_level > 2)
13588                                                         printf ("LONG VREG R%d made global.\n", vreg);
13589                                         }
13590
13591                                         /*
13592                                          * Make the component vregs volatile since the optimizations can
13593                                          * get confused otherwise.
13594                                          */
13595                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13596                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13597                                 }
13598 #endif
13599
13600                                 g_assert (vreg != -1);
13601
13602                                 prev_bb = vreg_to_bb [vreg];
13603                                 if (prev_bb == 0) {
13604                                         /* 0 is a valid block num */
13605                                         vreg_to_bb [vreg] = block_num + 1;
13606                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13607                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13608                                                 continue;
13609
13610                                         if (!get_vreg_to_inst (cfg, vreg)) {
13611                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13612                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13613
13614                                                 switch (regtype) {
13615                                                 case 'i':
13616                                                         if (vreg_is_ref (cfg, vreg))
13617                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13618                                                         else
13619                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13620                                                         break;
13621                                                 case 'l':
13622                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13623                                                         break;
13624                                                 case 'f':
13625                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13626                                                         break;
13627                                                 case 'v':
13628                                                 case 'x':
13629                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13630                                                         break;
13631                                                 default:
13632                                                         g_assert_not_reached ();
13633                                                 }
13634                                         }
13635
13636                                         /* Flag as having been used in more than one bb */
13637                                         vreg_to_bb [vreg] = -1;
13638                                 }
13639                         }
13640                 }
13641         }
13642
13643         /* If a variable is used in only one bblock, convert it into a local vreg */
13644         for (i = 0; i < cfg->num_varinfo; i++) {
13645                 MonoInst *var = cfg->varinfo [i];
13646                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13647
13648                 switch (var->type) {
13649                 case STACK_I4:
13650                 case STACK_OBJ:
13651                 case STACK_PTR:
13652                 case STACK_MP:
13653                 case STACK_VTYPE:
13654 #if SIZEOF_REGISTER == 8
13655                 case STACK_I8:
13656 #endif
13657 #if !defined(TARGET_X86)
13658                 /* Enabling this screws up the fp stack on x86 */
13659                 case STACK_R8:
13660 #endif
13661                         if (mono_arch_is_soft_float ())
13662                                 break;
13663
13664                         /*
13665                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13666                                 break;
13667                         */
13668
13669                         /* Arguments are implicitly global */
13670                         /* Putting R4 vars into registers doesn't work currently */
13671                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13672                         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) {
13673                                 /*
13674                                  * Make that the variable's liveness interval doesn't contain a call, since
13675                                  * that would cause the lvreg to be spilled, making the whole optimization
13676                                  * useless.
13677                                  */
13678                                 /* This is too slow for JIT compilation */
13679 #if 0
13680                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13681                                         MonoInst *ins;
13682                                         int def_index, call_index, ins_index;
13683                                         gboolean spilled = FALSE;
13684
13685                                         def_index = -1;
13686                                         call_index = -1;
13687                                         ins_index = 0;
13688                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13689                                                 const char *spec = INS_INFO (ins->opcode);
13690
13691                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13692                                                         def_index = ins_index;
13693
13694                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13695                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13696                                                         if (call_index > def_index) {
13697                                                                 spilled = TRUE;
13698                                                                 break;
13699                                                         }
13700                                                 }
13701
13702                                                 if (MONO_IS_CALL (ins))
13703                                                         call_index = ins_index;
13704
13705                                                 ins_index ++;
13706                                         }
13707
13708                                         if (spilled)
13709                                                 break;
13710                                 }
13711 #endif
13712
13713                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13714                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13715                                 var->flags |= MONO_INST_IS_DEAD;
13716                                 cfg->vreg_to_inst [var->dreg] = NULL;
13717                         }
13718                         break;
13719                 }
13720         }
13721
13722         /*
13723          * Compress the varinfo and vars tables so the liveness computation is faster and
13724          * takes up less space.
13725          */
13726         pos = 0;
13727         for (i = 0; i < cfg->num_varinfo; ++i) {
13728                 MonoInst *var = cfg->varinfo [i];
13729                 if (pos < i && cfg->locals_start == i)
13730                         cfg->locals_start = pos;
13731                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13732                         if (pos < i) {
13733                                 cfg->varinfo [pos] = cfg->varinfo [i];
13734                                 cfg->varinfo [pos]->inst_c0 = pos;
13735                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13736                                 cfg->vars [pos].idx = pos;
13737 #if SIZEOF_REGISTER == 4
13738                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13739                                         /* Modify the two component vars too */
13740                                         MonoInst *var1;
13741
13742                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13743                                         var1->inst_c0 = pos;
13744                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13745                                         var1->inst_c0 = pos;
13746                                 }
13747 #endif
13748                         }
13749                         pos ++;
13750                 }
13751         }
13752         cfg->num_varinfo = pos;
13753         if (cfg->locals_start > cfg->num_varinfo)
13754                 cfg->locals_start = cfg->num_varinfo;
13755 }
13756
13757 /*
13758  * mono_allocate_gsharedvt_vars:
13759  *
13760  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13761  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13762  */
13763 void
13764 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13765 {
13766         int i;
13767
13768         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13769
13770         for (i = 0; i < cfg->num_varinfo; ++i) {
13771                 MonoInst *ins = cfg->varinfo [i];
13772                 int idx;
13773
13774                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13775                         if (i >= cfg->locals_start) {
13776                                 /* Local */
13777                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13778                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13779                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13780                                 ins->inst_imm = idx;
13781                         } else {
13782                                 /* Arg */
13783                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13784                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13785                         }
13786                 }
13787         }
13788 }
13789
13790 /**
13791  * mono_spill_global_vars:
13792  *
13793  *   Generate spill code for variables which are not allocated to registers,
13794  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13795  * code is generated which could be optimized by the local optimization passes.
13796  */
13797 void
13798 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13799 {
13800         MonoBasicBlock *bb;
13801         char spec2 [16];
13802         int orig_next_vreg;
13803         guint32 *vreg_to_lvreg;
13804         guint32 *lvregs;
13805         guint32 i, lvregs_len, lvregs_size;
13806         gboolean dest_has_lvreg = FALSE;
13807         MonoStackType stacktypes [128];
13808         MonoInst **live_range_start, **live_range_end;
13809         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13810
13811         *need_local_opts = FALSE;
13812
13813         memset (spec2, 0, sizeof (spec2));
13814
13815         /* FIXME: Move this function to mini.c */
13816         stacktypes ['i'] = STACK_PTR;
13817         stacktypes ['l'] = STACK_I8;
13818         stacktypes ['f'] = STACK_R8;
13819 #ifdef MONO_ARCH_SIMD_INTRINSICS
13820         stacktypes ['x'] = STACK_VTYPE;
13821 #endif
13822
13823 #if SIZEOF_REGISTER == 4
13824         /* Create MonoInsts for longs */
13825         for (i = 0; i < cfg->num_varinfo; i++) {
13826                 MonoInst *ins = cfg->varinfo [i];
13827
13828                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13829                         switch (ins->type) {
13830                         case STACK_R8:
13831                         case STACK_I8: {
13832                                 MonoInst *tree;
13833
13834                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13835                                         break;
13836
13837                                 g_assert (ins->opcode == OP_REGOFFSET);
13838
13839                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13840                                 g_assert (tree);
13841                                 tree->opcode = OP_REGOFFSET;
13842                                 tree->inst_basereg = ins->inst_basereg;
13843                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13844
13845                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13846                                 g_assert (tree);
13847                                 tree->opcode = OP_REGOFFSET;
13848                                 tree->inst_basereg = ins->inst_basereg;
13849                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13850                                 break;
13851                         }
13852                         default:
13853                                 break;
13854                         }
13855                 }
13856         }
13857 #endif
13858
13859         if (cfg->compute_gc_maps) {
13860                 /* registers need liveness info even for !non refs */
13861                 for (i = 0; i < cfg->num_varinfo; i++) {
13862                         MonoInst *ins = cfg->varinfo [i];
13863
13864                         if (ins->opcode == OP_REGVAR)
13865                                 ins->flags |= MONO_INST_GC_TRACK;
13866                 }
13867         }
13868
13869         /* FIXME: widening and truncation */
13870
13871         /*
13872          * As an optimization, when a variable allocated to the stack is first loaded into
13873          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13874          * the variable again.
13875          */
13876         orig_next_vreg = cfg->next_vreg;
13877         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13878         lvregs_size = 1024;
13879         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13880         lvregs_len = 0;
13881
13882         /*
13883          * These arrays contain the first and last instructions accessing a given
13884          * variable.
13885          * Since we emit bblocks in the same order we process them here, and we
13886          * don't split live ranges, these will precisely describe the live range of
13887          * the variable, i.e. the instruction range where a valid value can be found
13888          * in the variables location.
13889          * The live range is computed using the liveness info computed by the liveness pass.
13890          * We can't use vmv->range, since that is an abstract live range, and we need
13891          * one which is instruction precise.
13892          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13893          */
13894         /* FIXME: Only do this if debugging info is requested */
13895         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13896         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13897         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13898         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13899
13900         /* Add spill loads/stores */
13901         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13902                 MonoInst *ins;
13903
13904                 if (cfg->verbose_level > 2)
13905                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13906
13907                 /* Clear vreg_to_lvreg array */
13908                 for (i = 0; i < lvregs_len; i++)
13909                         vreg_to_lvreg [lvregs [i]] = 0;
13910                 lvregs_len = 0;
13911
13912                 cfg->cbb = bb;
13913                 MONO_BB_FOR_EACH_INS (bb, ins) {
13914                         const char *spec = INS_INFO (ins->opcode);
13915                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13916                         gboolean store, no_lvreg;
13917                         int sregs [MONO_MAX_SRC_REGS];
13918
13919                         if (G_UNLIKELY (cfg->verbose_level > 2))
13920                                 mono_print_ins (ins);
13921
13922                         if (ins->opcode == OP_NOP)
13923                                 continue;
13924
13925                         /*
13926                          * We handle LDADDR here as well, since it can only be decomposed
13927                          * when variable addresses are known.
13928                          */
13929                         if (ins->opcode == OP_LDADDR) {
13930                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13931
13932                                 if (var->opcode == OP_VTARG_ADDR) {
13933                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13934                                         MonoInst *vtaddr = var->inst_left;
13935                                         if (vtaddr->opcode == OP_REGVAR) {
13936                                                 ins->opcode = OP_MOVE;
13937                                                 ins->sreg1 = vtaddr->dreg;
13938                                         }
13939                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13940                                                 ins->opcode = OP_LOAD_MEMBASE;
13941                                                 ins->inst_basereg = vtaddr->inst_basereg;
13942                                                 ins->inst_offset = vtaddr->inst_offset;
13943                                         } else
13944                                                 NOT_IMPLEMENTED;
13945                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13946                                         /* gsharedvt arg passed by ref */
13947                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13948
13949                                         ins->opcode = OP_LOAD_MEMBASE;
13950                                         ins->inst_basereg = var->inst_basereg;
13951                                         ins->inst_offset = var->inst_offset;
13952                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13953                                         MonoInst *load, *load2, *load3;
13954                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13955                                         int reg1, reg2, reg3;
13956                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13957                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13958
13959                                         /*
13960                                          * gsharedvt local.
13961                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13962                                          */
13963
13964                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13965
13966                                         g_assert (info_var);
13967                                         g_assert (locals_var);
13968
13969                                         /* Mark the instruction used to compute the locals var as used */
13970                                         cfg->gsharedvt_locals_var_ins = NULL;
13971
13972                                         /* Load the offset */
13973                                         if (info_var->opcode == OP_REGOFFSET) {
13974                                                 reg1 = alloc_ireg (cfg);
13975                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13976                                         } else if (info_var->opcode == OP_REGVAR) {
13977                                                 load = NULL;
13978                                                 reg1 = info_var->dreg;
13979                                         } else {
13980                                                 g_assert_not_reached ();
13981                                         }
13982                                         reg2 = alloc_ireg (cfg);
13983                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13984                                         /* Load the locals area address */
13985                                         reg3 = alloc_ireg (cfg);
13986                                         if (locals_var->opcode == OP_REGOFFSET) {
13987                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13988                                         } else if (locals_var->opcode == OP_REGVAR) {
13989                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13990                                         } else {
13991                                                 g_assert_not_reached ();
13992                                         }
13993                                         /* Compute the address */
13994                                         ins->opcode = OP_PADD;
13995                                         ins->sreg1 = reg3;
13996                                         ins->sreg2 = reg2;
13997
13998                                         mono_bblock_insert_before_ins (bb, ins, load3);
13999                                         mono_bblock_insert_before_ins (bb, load3, load2);
14000                                         if (load)
14001                                                 mono_bblock_insert_before_ins (bb, load2, load);
14002                                 } else {
14003                                         g_assert (var->opcode == OP_REGOFFSET);
14004
14005                                         ins->opcode = OP_ADD_IMM;
14006                                         ins->sreg1 = var->inst_basereg;
14007                                         ins->inst_imm = var->inst_offset;
14008                                 }
14009
14010                                 *need_local_opts = TRUE;
14011                                 spec = INS_INFO (ins->opcode);
14012                         }
14013
14014                         if (ins->opcode < MONO_CEE_LAST) {
14015                                 mono_print_ins (ins);
14016                                 g_assert_not_reached ();
14017                         }
14018
14019                         /*
14020                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14021                          * src register.
14022                          * FIXME:
14023                          */
14024                         if (MONO_IS_STORE_MEMBASE (ins)) {
14025                                 tmp_reg = ins->dreg;
14026                                 ins->dreg = ins->sreg2;
14027                                 ins->sreg2 = tmp_reg;
14028                                 store = TRUE;
14029
14030                                 spec2 [MONO_INST_DEST] = ' ';
14031                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14032                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14033                                 spec2 [MONO_INST_SRC3] = ' ';
14034                                 spec = spec2;
14035                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14036                                 g_assert_not_reached ();
14037                         else
14038                                 store = FALSE;
14039                         no_lvreg = FALSE;
14040
14041                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14042                                 printf ("\t %.3s %d", spec, ins->dreg);
14043                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14044                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14045                                         printf (" %d", sregs [srcindex]);
14046                                 printf ("\n");
14047                         }
14048
14049                         /***************/
14050                         /*    DREG     */
14051                         /***************/
14052                         regtype = spec [MONO_INST_DEST];
14053                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14054                         prev_dreg = -1;
14055
14056                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14057                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14058                                 MonoInst *store_ins;
14059                                 int store_opcode;
14060                                 MonoInst *def_ins = ins;
14061                                 int dreg = ins->dreg; /* The original vreg */
14062
14063                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14064
14065                                 if (var->opcode == OP_REGVAR) {
14066                                         ins->dreg = var->dreg;
14067                                 } 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)) {
14068                                         /*
14069                                          * Instead of emitting a load+store, use a _membase opcode.
14070                                          */
14071                                         g_assert (var->opcode == OP_REGOFFSET);
14072                                         if (ins->opcode == OP_MOVE) {
14073                                                 NULLIFY_INS (ins);
14074                                                 def_ins = NULL;
14075                                         } else {
14076                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14077                                                 ins->inst_basereg = var->inst_basereg;
14078                                                 ins->inst_offset = var->inst_offset;
14079                                                 ins->dreg = -1;
14080                                         }
14081                                         spec = INS_INFO (ins->opcode);
14082                                 } else {
14083                                         guint32 lvreg;
14084
14085                                         g_assert (var->opcode == OP_REGOFFSET);
14086
14087                                         prev_dreg = ins->dreg;
14088
14089                                         /* Invalidate any previous lvreg for this vreg */
14090                                         vreg_to_lvreg [ins->dreg] = 0;
14091
14092                                         lvreg = 0;
14093
14094                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14095                                                 regtype = 'l';
14096                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14097                                         }
14098
14099                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14100
14101 #if SIZEOF_REGISTER != 8
14102                                         if (regtype == 'l') {
14103                                                 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));
14104                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14105                                                 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));
14106                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14107                                                 def_ins = store_ins;
14108                                         }
14109                                         else
14110 #endif
14111                                         {
14112                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14113
14114                                                 /* Try to fuse the store into the instruction itself */
14115                                                 /* FIXME: Add more instructions */
14116                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14117                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14118                                                         ins->inst_imm = ins->inst_c0;
14119                                                         ins->inst_destbasereg = var->inst_basereg;
14120                                                         ins->inst_offset = var->inst_offset;
14121                                                         spec = INS_INFO (ins->opcode);
14122                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14123                                                         ins->opcode = store_opcode;
14124                                                         ins->inst_destbasereg = var->inst_basereg;
14125                                                         ins->inst_offset = var->inst_offset;
14126
14127                                                         no_lvreg = TRUE;
14128
14129                                                         tmp_reg = ins->dreg;
14130                                                         ins->dreg = ins->sreg2;
14131                                                         ins->sreg2 = tmp_reg;
14132                                                         store = TRUE;
14133
14134                                                         spec2 [MONO_INST_DEST] = ' ';
14135                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14136                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14137                                                         spec2 [MONO_INST_SRC3] = ' ';
14138                                                         spec = spec2;
14139                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14140                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14141                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14142                                                         ins->dreg = -1;
14143                                                         ins->inst_basereg = var->inst_basereg;
14144                                                         ins->inst_offset = var->inst_offset;
14145                                                         spec = INS_INFO (ins->opcode);
14146                                                 } else {
14147                                                         /* printf ("INS: "); mono_print_ins (ins); */
14148                                                         /* Create a store instruction */
14149                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14150
14151                                                         /* Insert it after the instruction */
14152                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14153
14154                                                         def_ins = store_ins;
14155
14156                                                         /*
14157                                                          * We can't assign ins->dreg to var->dreg here, since the
14158                                                          * sregs could use it. So set a flag, and do it after
14159                                                          * the sregs.
14160                                                          */
14161                                                         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)))
14162                                                                 dest_has_lvreg = TRUE;
14163                                                 }
14164                                         }
14165                                 }
14166
14167                                 if (def_ins && !live_range_start [dreg]) {
14168                                         live_range_start [dreg] = def_ins;
14169                                         live_range_start_bb [dreg] = bb;
14170                                 }
14171
14172                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14173                                         MonoInst *tmp;
14174
14175                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14176                                         tmp->inst_c1 = dreg;
14177                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14178                                 }
14179                         }
14180
14181                         /************/
14182                         /*  SREGS   */
14183                         /************/
14184                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14185                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14186                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14187                                 sreg = sregs [srcindex];
14188
14189                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14190                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14191                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14192                                         MonoInst *use_ins = ins;
14193                                         MonoInst *load_ins;
14194                                         guint32 load_opcode;
14195
14196                                         if (var->opcode == OP_REGVAR) {
14197                                                 sregs [srcindex] = var->dreg;
14198                                                 //mono_inst_set_src_registers (ins, sregs);
14199                                                 live_range_end [sreg] = use_ins;
14200                                                 live_range_end_bb [sreg] = bb;
14201
14202                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14203                                                         MonoInst *tmp;
14204
14205                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14206                                                         /* var->dreg is a hreg */
14207                                                         tmp->inst_c1 = sreg;
14208                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14209                                                 }
14210
14211                                                 continue;
14212                                         }
14213
14214                                         g_assert (var->opcode == OP_REGOFFSET);
14215
14216                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14217
14218                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14219
14220                                         if (vreg_to_lvreg [sreg]) {
14221                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14222
14223                                                 /* The variable is already loaded to an lvreg */
14224                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14225                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14226                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14227                                                 //mono_inst_set_src_registers (ins, sregs);
14228                                                 continue;
14229                                         }
14230
14231                                         /* Try to fuse the load into the instruction */
14232                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14233                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14234                                                 sregs [0] = var->inst_basereg;
14235                                                 //mono_inst_set_src_registers (ins, sregs);
14236                                                 ins->inst_offset = var->inst_offset;
14237                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14238                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14239                                                 sregs [1] = var->inst_basereg;
14240                                                 //mono_inst_set_src_registers (ins, sregs);
14241                                                 ins->inst_offset = var->inst_offset;
14242                                         } else {
14243                                                 if (MONO_IS_REAL_MOVE (ins)) {
14244                                                         ins->opcode = OP_NOP;
14245                                                         sreg = ins->dreg;
14246                                                 } else {
14247                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14248
14249                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14250
14251                                                         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) {
14252                                                                 if (var->dreg == prev_dreg) {
14253                                                                         /*
14254                                                                          * sreg refers to the value loaded by the load
14255                                                                          * emitted below, but we need to use ins->dreg
14256                                                                          * since it refers to the store emitted earlier.
14257                                                                          */
14258                                                                         sreg = ins->dreg;
14259                                                                 }
14260                                                                 g_assert (sreg != -1);
14261                                                                 vreg_to_lvreg [var->dreg] = sreg;
14262                                                                 if (lvregs_len >= lvregs_size) {
14263                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14264                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14265                                                                         lvregs = new_lvregs;
14266                                                                         lvregs_size *= 2;
14267                                                                 }
14268                                                                 lvregs [lvregs_len ++] = var->dreg;
14269                                                         }
14270                                                 }
14271
14272                                                 sregs [srcindex] = sreg;
14273                                                 //mono_inst_set_src_registers (ins, sregs);
14274
14275 #if SIZEOF_REGISTER != 8
14276                                                 if (regtype == 'l') {
14277                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14278                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14279                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14280                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14281                                                         use_ins = load_ins;
14282                                                 }
14283                                                 else
14284 #endif
14285                                                 {
14286 #if SIZEOF_REGISTER == 4
14287                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14288 #endif
14289                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14290                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14291                                                         use_ins = load_ins;
14292                                                 }
14293                                         }
14294
14295                                         if (var->dreg < orig_next_vreg) {
14296                                                 live_range_end [var->dreg] = use_ins;
14297                                                 live_range_end_bb [var->dreg] = bb;
14298                                         }
14299
14300                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14301                                                 MonoInst *tmp;
14302
14303                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14304                                                 tmp->inst_c1 = var->dreg;
14305                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14306                                         }
14307                                 }
14308                         }
14309                         mono_inst_set_src_registers (ins, sregs);
14310
14311                         if (dest_has_lvreg) {
14312                                 g_assert (ins->dreg != -1);
14313                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14314                                 if (lvregs_len >= lvregs_size) {
14315                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14316                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14317                                         lvregs = new_lvregs;
14318                                         lvregs_size *= 2;
14319                                 }
14320                                 lvregs [lvregs_len ++] = prev_dreg;
14321                                 dest_has_lvreg = FALSE;
14322                         }
14323
14324                         if (store) {
14325                                 tmp_reg = ins->dreg;
14326                                 ins->dreg = ins->sreg2;
14327                                 ins->sreg2 = tmp_reg;
14328                         }
14329
14330                         if (MONO_IS_CALL (ins)) {
14331                                 /* Clear vreg_to_lvreg array */
14332                                 for (i = 0; i < lvregs_len; i++)
14333                                         vreg_to_lvreg [lvregs [i]] = 0;
14334                                 lvregs_len = 0;
14335                         } else if (ins->opcode == OP_NOP) {
14336                                 ins->dreg = -1;
14337                                 MONO_INST_NULLIFY_SREGS (ins);
14338                         }
14339
14340                         if (cfg->verbose_level > 2)
14341                                 mono_print_ins_index (1, ins);
14342                 }
14343
14344                 /* Extend the live range based on the liveness info */
14345                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14346                         for (i = 0; i < cfg->num_varinfo; i ++) {
14347                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14348
14349                                 if (vreg_is_volatile (cfg, vi->vreg))
14350                                         /* The liveness info is incomplete */
14351                                         continue;
14352
14353                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14354                                         /* Live from at least the first ins of this bb */
14355                                         live_range_start [vi->vreg] = bb->code;
14356                                         live_range_start_bb [vi->vreg] = bb;
14357                                 }
14358
14359                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14360                                         /* Live at least until the last ins of this bb */
14361                                         live_range_end [vi->vreg] = bb->last_ins;
14362                                         live_range_end_bb [vi->vreg] = bb;
14363                                 }
14364                         }
14365                 }
14366         }
14367
14368         /*
14369          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14370          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14371          */
14372         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14373                 for (i = 0; i < cfg->num_varinfo; ++i) {
14374                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14375                         MonoInst *ins;
14376
14377                         if (live_range_start [vreg]) {
14378                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14379                                 ins->inst_c0 = i;
14380                                 ins->inst_c1 = vreg;
14381                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14382                         }
14383                         if (live_range_end [vreg]) {
14384                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14385                                 ins->inst_c0 = i;
14386                                 ins->inst_c1 = vreg;
14387                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14388                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14389                                 else
14390                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14391                         }
14392                 }
14393         }
14394
14395         if (cfg->gsharedvt_locals_var_ins) {
14396                 /* Nullify if unused */
14397                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14398                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14399         }
14400
14401         g_free (live_range_start);
14402         g_free (live_range_end);
14403         g_free (live_range_start_bb);
14404         g_free (live_range_end_bb);
14405 }
14406
14407
14408 /**
14409  * FIXME:
14410  * - use 'iadd' instead of 'int_add'
14411  * - handling ovf opcodes: decompose in method_to_ir.
14412  * - unify iregs/fregs
14413  *   -> partly done, the missing parts are:
14414  *   - a more complete unification would involve unifying the hregs as well, so
14415  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14416  *     would no longer map to the machine hregs, so the code generators would need to
14417  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14418  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14419  *     fp/non-fp branches speeds it up by about 15%.
14420  * - use sext/zext opcodes instead of shifts
14421  * - add OP_ICALL
14422  * - get rid of TEMPLOADs if possible and use vregs instead
14423  * - clean up usage of OP_P/OP_ opcodes
14424  * - cleanup usage of DUMMY_USE
14425  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14426  *   stack
14427  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14428  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14429  * - make sure handle_stack_args () is called before the branch is emitted
14430  * - when the new IR is done, get rid of all unused stuff
14431  * - COMPARE/BEQ as separate instructions or unify them ?
14432  *   - keeping them separate allows specialized compare instructions like
14433  *     compare_imm, compare_membase
14434  *   - most back ends unify fp compare+branch, fp compare+ceq
14435  * - integrate mono_save_args into inline_method
14436  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14437  * - handle long shift opts on 32 bit platforms somehow: they require
14438  *   3 sregs (2 for arg1 and 1 for arg2)
14439  * - make byref a 'normal' type.
14440  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14441  *   variable if needed.
14442  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14443  *   like inline_method.
14444  * - remove inlining restrictions
14445  * - fix LNEG and enable cfold of INEG
14446  * - generalize x86 optimizations like ldelema as a peephole optimization
14447  * - add store_mem_imm for amd64
14448  * - optimize the loading of the interruption flag in the managed->native wrappers
14449  * - avoid special handling of OP_NOP in passes
14450  * - move code inserting instructions into one function/macro.
14451  * - try a coalescing phase after liveness analysis
14452  * - add float -> vreg conversion + local optimizations on !x86
14453  * - figure out how to handle decomposed branches during optimizations, ie.
14454  *   compare+branch, op_jump_table+op_br etc.
14455  * - promote RuntimeXHandles to vregs
14456  * - vtype cleanups:
14457  *   - add a NEW_VARLOADA_VREG macro
14458  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14459  *   accessing vtype fields.
14460  * - get rid of I8CONST on 64 bit platforms
14461  * - dealing with the increase in code size due to branches created during opcode
14462  *   decomposition:
14463  *   - use extended basic blocks
14464  *     - all parts of the JIT
14465  *     - handle_global_vregs () && local regalloc
14466  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14467  * - sources of increase in code size:
14468  *   - vtypes
14469  *   - long compares
14470  *   - isinst and castclass
14471  *   - lvregs not allocated to global registers even if used multiple times
14472  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14473  *   meaningful.
14474  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14475  * - add all micro optimizations from the old JIT
14476  * - put tree optimizations into the deadce pass
14477  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14478  *   specific function.
14479  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14480  *   fcompare + branchCC.
14481  * - create a helper function for allocating a stack slot, taking into account
14482  *   MONO_CFG_HAS_SPILLUP.
14483  * - merge r68207.
14484  * - merge the ia64 switch changes.
14485  * - optimize mono_regstate2_alloc_int/float.
14486  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14487  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14488  *   parts of the tree could be separated by other instructions, killing the tree
14489  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14490  *   instructions if the result of the load is used multiple times ?
14491  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14492  * - LAST MERGE: 108395.
14493  * - when returning vtypes in registers, generate IR and append it to the end of the
14494  *   last bb instead of doing it in the epilog.
14495  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14496  */
14497
14498 /*
14499
14500 NOTES
14501 -----
14502
14503 - When to decompose opcodes:
14504   - earlier: this makes some optimizations hard to implement, since the low level IR
14505   no longer contains the neccessary information. But it is easier to do.
14506   - later: harder to implement, enables more optimizations.
14507 - Branches inside bblocks:
14508   - created when decomposing complex opcodes.
14509     - branches to another bblock: harmless, but not tracked by the branch
14510       optimizations, so need to branch to a label at the start of the bblock.
14511     - branches to inside the same bblock: very problematic, trips up the local
14512       reg allocator. Can be fixed by spitting the current bblock, but that is a
14513       complex operation, since some local vregs can become global vregs etc.
14514 - Local/global vregs:
14515   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14516     local register allocator.
14517   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14518     structure, created by mono_create_var (). Assigned to hregs or the stack by
14519     the global register allocator.
14520 - When to do optimizations like alu->alu_imm:
14521   - earlier -> saves work later on since the IR will be smaller/simpler
14522   - later -> can work on more instructions
14523 - Handling of valuetypes:
14524   - When a vtype is pushed on the stack, a new temporary is created, an
14525     instruction computing its address (LDADDR) is emitted and pushed on
14526     the stack. Need to optimize cases when the vtype is used immediately as in
14527     argument passing, stloc etc.
14528 - Instead of the to_end stuff in the old JIT, simply call the function handling
14529   the values on the stack before emitting the last instruction of the bb.
14530 */
14531
14532 #else /* !DISABLE_JIT */
14533
14534 MONO_EMPTY_SOURCE_FILE (method_to_ir);
14535
14536 #endif /* !DISABLE_JIT */