mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 inline static MonoInst*
 152 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg);
 153
 154 /* helper methods signatures */
 155 static MonoMethodSignature *helper_sig_domain_get;
 156 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 157 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 158 static MonoMethodSignature *helper_sig_jit_thread_attach;
 159 static MonoMethodSignature *helper_sig_get_tls_tramp;
 160 static MonoMethodSignature *helper_sig_set_tls_tramp;
 161
 162 /* type loading helpers */
 163 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 164 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 165
 166 /*
 167  * Instruction metadata
 168  */
 169 #ifdef MINI_OP
 170 #undef MINI_OP
 171 #endif
 172 #ifdef MINI_OP3
 173 #undef MINI_OP3
 174 #endif
 175 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 176 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 177 #define NONE ' '
 178 #define IREG 'i'
 179 #define FREG 'f'
 180 #define VREG 'v'
 181 #define XREG 'x'
 182 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 183 #define LREG IREG
 184 #else
 185 #define LREG 'l'
 186 #endif
 187 /* keep in sync with the enum in mini.h */
 188 const char
 189 ins_info[] = {
 190 #include "mini-ops.h"
 191 };
 192 #undef MINI_OP
 193 #undef MINI_OP3
 194
 195 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 196 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 197 /*
 198  * This should contain the index of the last sreg + 1. This is not the same
 199  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 200  */
 201 const gint8 ins_sreg_counts[] = {
 202 #include "mini-ops.h"
 203 };
 204 #undef MINI_OP
 205 #undef MINI_OP3
 206
 207 guint32
 208 mono_alloc_ireg (MonoCompile *cfg)
 209 {
 210         return alloc_ireg (cfg);
 211 }
 212
 213 guint32
 214 mono_alloc_lreg (MonoCompile *cfg)
 215 {
 216         return alloc_lreg (cfg);
 217 }
 218
 219 guint32
 220 mono_alloc_freg (MonoCompile *cfg)
 221 {
 222         return alloc_freg (cfg);
 223 }
 224
 225 guint32
 226 mono_alloc_preg (MonoCompile *cfg)
 227 {
 228         return alloc_preg (cfg);
 229 }
 230
 231 guint32
 232 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 233 {
 234         return alloc_dreg (cfg, stack_type);
 235 }
 236
 237 /*
 238  * mono_alloc_ireg_ref:
 239  *
 240  *   Allocate an IREG, and mark it as holding a GC ref.
 241  */
 242 guint32
 243 mono_alloc_ireg_ref (MonoCompile *cfg)
 244 {
 245         return alloc_ireg_ref (cfg);
 246 }
 247
 248 /*
 249  * mono_alloc_ireg_mp:
 250  *
 251  *   Allocate an IREG, and mark it as holding a managed pointer.
 252  */
 253 guint32
 254 mono_alloc_ireg_mp (MonoCompile *cfg)
 255 {
 256         return alloc_ireg_mp (cfg);
 257 }
 258
 259 /*
 260  * mono_alloc_ireg_copy:
 261  *
 262  *   Allocate an IREG with the same GC type as VREG.
 263  */
 264 guint32
 265 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 266 {
 267         if (vreg_is_ref (cfg, vreg))
 268                 return alloc_ireg_ref (cfg);
 269         else if (vreg_is_mp (cfg, vreg))
 270                 return alloc_ireg_mp (cfg);
 271         else
 272                 return alloc_ireg (cfg);
 273 }
 274
 275 guint
 276 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 277 {
 278         if (type->byref)
 279                 return OP_MOVE;
 280
 281         type = mini_get_underlying_type (type);
 282 handle_enum:
 283         switch (type->type) {
 284         case MONO_TYPE_I1:
 285         case MONO_TYPE_U1:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I2:
 288         case MONO_TYPE_U2:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I4:
 291         case MONO_TYPE_U4:
 292                 return OP_MOVE;
 293         case MONO_TYPE_I:
 294         case MONO_TYPE_U:
 295         case MONO_TYPE_PTR:
 296         case MONO_TYPE_FNPTR:
 297                 return OP_MOVE;
 298         case MONO_TYPE_CLASS:
 299         case MONO_TYPE_STRING:
 300         case MONO_TYPE_OBJECT:
 301         case MONO_TYPE_SZARRAY:
 302         case MONO_TYPE_ARRAY:
 303                 return OP_MOVE;
 304         case MONO_TYPE_I8:
 305         case MONO_TYPE_U8:
 306 #if SIZEOF_REGISTER == 8
 307                 return OP_MOVE;
 308 #else
 309                 return OP_LMOVE;
 310 #endif
 311         case MONO_TYPE_R4:
 312                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 313         case MONO_TYPE_R8:
 314                 return OP_FMOVE;
 315         case MONO_TYPE_VALUETYPE:
 316                 if (type->data.klass->enumtype) {
 317                         type = mono_class_enum_basetype (type->data.klass);
 318                         goto handle_enum;
 319                 }
 320                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 321                         return OP_XMOVE;
 322                 return OP_VMOVE;
 323         case MONO_TYPE_TYPEDBYREF:
 324                 return OP_VMOVE;
 325         case MONO_TYPE_GENERICINST:
 326                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 327                         return OP_XMOVE;
 328                 type = &type->data.generic_class->container_class->byval_arg;
 329                 goto handle_enum;
 330         case MONO_TYPE_VAR:
 331         case MONO_TYPE_MVAR:
 332                 g_assert (cfg->gshared);
 333                 if (mini_type_var_is_vt (type))
 334                         return OP_VMOVE;
 335                 else
 336                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 337         default:
 338                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 339         }
 340         return -1;
 341 }
 342
 343 void
 344 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 345 {
 346         int i;
 347         MonoInst *tree;
 348         GString *str = g_string_new ("");
 349
 350         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 351         for (i = 0; i < bb->in_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 353         g_string_append_printf (str, ", OUT: ");
 354         for (i = 0; i < bb->out_count; ++i)
 355                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 356         g_string_append_printf (str, " ]\n");
 357
 358         g_print ("%s", str->str);
 359         g_string_free (str, TRUE);
 360
 361         for (tree = bb->code; tree; tree = tree->next)
 362                 mono_print_ins_index (-1, tree);
 363 }
 364
 365 void
 366 mono_create_helper_signatures (void)
 367 {
 368         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 369         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 370         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 371         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 372         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 373         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 374 }
 375
 376 static MONO_NEVER_INLINE void
 377 break_on_unverified (void)
 378 {
 379         if (mini_get_debug_options ()->break_on_unverified)
 380                 G_BREAKPOINT ();
 381 }
 382
 383 static MONO_NEVER_INLINE void
 384 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 385 {
 386         char *method_fname = mono_method_full_name (method, TRUE);
 387         char *field_fname = mono_field_full_name (field);
 388         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 389         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 390         g_free (method_fname);
 391         g_free (field_fname);
 392 }
 393
 394 static MONO_NEVER_INLINE void
 395 inline_failure (MonoCompile *cfg, const char *msg)
 396 {
 397         if (cfg->verbose_level >= 2)
 398                 printf ("inline failed: %s\n", msg);
 399         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 400 }
 401
 402 static MONO_NEVER_INLINE void
 403 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 404 {
 405         if (cfg->verbose_level > 2)                                                                                     \
 406                 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);
 407         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 408 }
 409
 410 static MONO_NEVER_INLINE void
 411 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 412 {
 413         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);
 414         if (cfg->verbose_level >= 2)
 415                 printf ("%s\n", cfg->exception_message);
 416         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 417 }
 418
 419 /*
 420  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 421  * foo<T> (int i) { ldarg.0; box T; }
 422  */
 423 #define UNVERIFIED do { \
 424         if (cfg->gsharedvt) { \
 425                 if (cfg->verbose_level > 2)                                                                     \
 426                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 427                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 428                 goto exception_exit;                                                                                    \
 429         }                                                                                                                                       \
 430         break_on_unverified ();                                                                                         \
 431         goto unverified;                                                                                                        \
 432 } while (0)
 433
 434 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 435                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 436                 if (!(tblock)) {        \
 437                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 438             NEW_BBLOCK (cfg, (tblock)); \
 439                         (tblock)->cil_code = (ip);      \
 440                         ADD_BBLOCK (cfg, (tblock));     \
 441                 } \
 442         } while (0)
 443
 444 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 445 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 446                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 447                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 448                 (dest)->sreg1 = (sr1); \
 449                 (dest)->sreg2 = (sr2); \
 450                 (dest)->inst_imm = (imm); \
 451                 (dest)->backend.shift_amount = (shift); \
 452                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 453         } while (0)
 454 #endif
 455
 456 /* Emit conversions so both operands of a binary opcode are of the same type */
 457 static void
 458 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 459 {
 460         MonoInst *arg1 = *arg1_ref;
 461         MonoInst *arg2 = *arg2_ref;
 462
 463         if (cfg->r4fp &&
 464                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 465                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 466                 MonoInst *conv;
 467
 468                 /* Mixing r4/r8 is allowed by the spec */
 469                 if (arg1->type == STACK_R4) {
 470                         int dreg = alloc_freg (cfg);
 471
 472                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 473                         conv->type = STACK_R8;
 474                         ins->sreg1 = dreg;
 475                         *arg1_ref = conv;
 476                 }
 477                 if (arg2->type == STACK_R4) {
 478                         int dreg = alloc_freg (cfg);
 479
 480                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 481                         conv->type = STACK_R8;
 482                         ins->sreg2 = dreg;
 483                         *arg2_ref = conv;
 484                 }
 485         }
 486
 487 #if SIZEOF_REGISTER == 8
 488         /* FIXME: Need to add many more cases */
 489         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 490                 MonoInst *widen;
 491
 492                 int dr = alloc_preg (cfg);
 493                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 494                 (ins)->sreg2 = widen->dreg;
 495         }
 496 #endif
 497 }
 498
 499 #define ADD_BINOP(op) do {      \
 500                 MONO_INST_NEW (cfg, ins, (op)); \
 501                 sp -= 2;        \
 502                 ins->sreg1 = sp [0]->dreg;      \
 503                 ins->sreg2 = sp [1]->dreg;      \
 504                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 505                 CHECK_TYPE (ins);       \
 506                 /* Have to insert a widening op */               \
 507         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 508         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 509         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 510         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 511         } while (0)
 512
 513 #define ADD_UNOP(op) do {       \
 514                 MONO_INST_NEW (cfg, ins, (op)); \
 515                 sp--;   \
 516                 ins->sreg1 = sp [0]->dreg;      \
 517                 type_from_op (cfg, ins, sp [0], NULL);  \
 518                 CHECK_TYPE (ins);       \
 519         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 520         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 521                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 522         } while (0)
 523
 524 #define ADD_BINCOND(next_block) do {    \
 525                 MonoInst *cmp;  \
 526                 sp -= 2; \
 527                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 528                 cmp->sreg1 = sp [0]->dreg;      \
 529                 cmp->sreg2 = sp [1]->dreg;      \
 530                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 531                 CHECK_TYPE (cmp);       \
 532                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 533                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 534                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 535                 GET_BBLOCK (cfg, tblock, target);               \
 536                 link_bblock (cfg, cfg->cbb, tblock);    \
 537                 ins->inst_true_bb = tblock;     \
 538                 if ((next_block)) {     \
 539                         link_bblock (cfg, cfg->cbb, (next_block));      \
 540                         ins->inst_false_bb = (next_block);      \
 541                         start_new_bblock = 1;   \
 542                 } else {        \
 543                         GET_BBLOCK (cfg, tblock, ip);           \
 544                         link_bblock (cfg, cfg->cbb, tblock);    \
 545                         ins->inst_false_bb = tblock;    \
 546                         start_new_bblock = 2;   \
 547                 }       \
 548                 if (sp != stack_start) {                                                                        \
 549                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 550                         CHECK_UNVERIFIABLE (cfg); \
 551                 } \
 552         MONO_ADD_INS (cfg->cbb, cmp); \
 553                 MONO_ADD_INS (cfg->cbb, ins);   \
 554         } while (0)
 555
 556 /* *
 557  * link_bblock: Links two basic blocks
 558  *
 559  * links two basic blocks in the control flow graph, the 'from'
 560  * argument is the starting block and the 'to' argument is the block
 561  * the control flow ends to after 'from'.
 562  */
 563 static void
 564 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 565 {
 566         MonoBasicBlock **newa;
 567         int i, found;
 568
 569 #if 0
 570         if (from->cil_code) {
 571                 if (to->cil_code)
 572                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 573                 else
 574                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 575         } else {
 576                 if (to->cil_code)
 577                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 578                 else
 579                         printf ("edge from entry to exit\n");
 580         }
 581 #endif
 582
 583         found = FALSE;
 584         for (i = 0; i < from->out_count; ++i) {
 585                 if (to == from->out_bb [i]) {
 586                         found = TRUE;
 587                         break;
 588                 }
 589         }
 590         if (!found) {
 591                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 592                 for (i = 0; i < from->out_count; ++i) {
 593                         newa [i] = from->out_bb [i];
 594                 }
 595                 newa [i] = to;
 596                 from->out_count++;
 597                 from->out_bb = newa;
 598         }
 599
 600         found = FALSE;
 601         for (i = 0; i < to->in_count; ++i) {
 602                 if (from == to->in_bb [i]) {
 603                         found = TRUE;
 604                         break;
 605                 }
 606         }
 607         if (!found) {
 608                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 609                 for (i = 0; i < to->in_count; ++i) {
 610                         newa [i] = to->in_bb [i];
 611                 }
 612                 newa [i] = from;
 613                 to->in_count++;
 614                 to->in_bb = newa;
 615         }
 616 }
 617
 618 void
 619 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 620 {
 621         link_bblock (cfg, from, to);
 622 }
 623
 624 /**
 625  * mono_find_block_region:
 626  *
 627  *   We mark each basic block with a region ID. We use that to avoid BB
 628  *   optimizations when blocks are in different regions.
 629  *
 630  * Returns:
 631  *   A region token that encodes where this region is, and information
 632  *   about the clause owner for this block.
 633  *
 634  *   The region encodes the try/catch/filter clause that owns this block
 635  *   as well as the type.  -1 is a special value that represents a block
 636  *   that is in none of try/catch/filter.
 637  */
 638 static int
 639 mono_find_block_region (MonoCompile *cfg, int offset)
 640 {
 641         MonoMethodHeader *header = cfg->header;
 642         MonoExceptionClause *clause;
 643         int i;
 644
 645         for (i = 0; i < header->num_clauses; ++i) {
 646                 clause = &header->clauses [i];
 647                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 648                     (offset < (clause->handler_offset)))
 649                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 650
 651                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 652                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 653                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 654                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 655                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 656                         else
 657                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 658                 }
 659         }
 660         for (i = 0; i < header->num_clauses; ++i) {
 661                 clause = &header->clauses [i];
 662
 663                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 664                         return ((i + 1) << 8) | clause->flags;
 665         }
 666
 667         return -1;
 668 }
 669
 670 static gboolean
 671 ip_in_finally_clause (MonoCompile *cfg, int offset)
 672 {
 673         MonoMethodHeader *header = cfg->header;
 674         MonoExceptionClause *clause;
 675         int i;
 676
 677         for (i = 0; i < header->num_clauses; ++i) {
 678                 clause = &header->clauses [i];
 679                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 680                         continue;
 681
 682                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 683                         return TRUE;
 684         }
 685         return FALSE;
 686 }
 687
 688 static GList*
 689 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 690 {
 691         MonoMethodHeader *header = cfg->header;
 692         MonoExceptionClause *clause;
 693         int i;
 694         GList *res = NULL;
 695
 696         for (i = 0; i < header->num_clauses; ++i) {
 697                 clause = &header->clauses [i];
 698                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 699                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 700                         if (clause->flags == type)
 701                                 res = g_list_append (res, clause);
 702                 }
 703         }
 704         return res;
 705 }
 706
 707 static void
 708 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 709 {
 710         MonoInst *var;
 711
 712         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 713         if (var)
 714                 return;
 715
 716         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 717         /* prevent it from being register allocated */
 718         var->flags |= MONO_INST_VOLATILE;
 719
 720         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 721 }
 722
 723 MonoInst *
 724 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 725 {
 726         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 727 }
 728
 729 static MonoInst*
 730 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 731 {
 732         MonoInst *var;
 733
 734         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 735         if (var)
 736                 return var;
 737
 738         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 739         /* prevent it from being register allocated */
 740         var->flags |= MONO_INST_VOLATILE;
 741
 742         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 743
 744         return var;
 745 }
 746
 747 /*
 748  * Returns the type used in the eval stack when @type is loaded.
 749  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 750  */
 751 void
 752 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 753 {
 754         MonoClass *klass;
 755
 756         type = mini_get_underlying_type (type);
 757         inst->klass = klass = mono_class_from_mono_type (type);
 758         if (type->byref) {
 759                 inst->type = STACK_MP;
 760                 return;
 761         }
 762
 763 handle_enum:
 764         switch (type->type) {
 765         case MONO_TYPE_VOID:
 766                 inst->type = STACK_INV;
 767                 return;
 768         case MONO_TYPE_I1:
 769         case MONO_TYPE_U1:
 770         case MONO_TYPE_I2:
 771         case MONO_TYPE_U2:
 772         case MONO_TYPE_I4:
 773         case MONO_TYPE_U4:
 774                 inst->type = STACK_I4;
 775                 return;
 776         case MONO_TYPE_I:
 777         case MONO_TYPE_U:
 778         case MONO_TYPE_PTR:
 779         case MONO_TYPE_FNPTR:
 780                 inst->type = STACK_PTR;
 781                 return;
 782         case MONO_TYPE_CLASS:
 783         case MONO_TYPE_STRING:
 784         case MONO_TYPE_OBJECT:
 785         case MONO_TYPE_SZARRAY:
 786         case MONO_TYPE_ARRAY:
 787                 inst->type = STACK_OBJ;
 788                 return;
 789         case MONO_TYPE_I8:
 790         case MONO_TYPE_U8:
 791                 inst->type = STACK_I8;
 792                 return;
 793         case MONO_TYPE_R4:
 794                 inst->type = cfg->r4_stack_type;
 795                 break;
 796         case MONO_TYPE_R8:
 797                 inst->type = STACK_R8;
 798                 return;
 799         case MONO_TYPE_VALUETYPE:
 800                 if (type->data.klass->enumtype) {
 801                         type = mono_class_enum_basetype (type->data.klass);
 802                         goto handle_enum;
 803                 } else {
 804                         inst->klass = klass;
 805                         inst->type = STACK_VTYPE;
 806                         return;
 807                 }
 808         case MONO_TYPE_TYPEDBYREF:
 809                 inst->klass = mono_defaults.typed_reference_class;
 810                 inst->type = STACK_VTYPE;
 811                 return;
 812         case MONO_TYPE_GENERICINST:
 813                 type = &type->data.generic_class->container_class->byval_arg;
 814                 goto handle_enum;
 815         case MONO_TYPE_VAR:
 816         case MONO_TYPE_MVAR:
 817                 g_assert (cfg->gshared);
 818                 if (mini_is_gsharedvt_type (type)) {
 819                         g_assert (cfg->gsharedvt);
 820                         inst->type = STACK_VTYPE;
 821                 } else {
 822                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 823                 }
 824                 return;
 825         default:
 826                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 827         }
 828 }
 829
 830 /*
 831  * The following tables are used to quickly validate the IL code in type_from_op ().
 832  */
 833 static const char
 834 bin_num_table [STACK_MAX] [STACK_MAX] = {
 835         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 837         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 840         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 841         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 842         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 843         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 844 };
 845
 846 static const char
 847 neg_table [] = {
 848         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 849 };
 850
 851 /* reduce the size of this table */
 852 static const char
 853 bin_int_table [STACK_MAX] [STACK_MAX] = {
 854         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 859         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 860         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 861         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 862 };
 863
 864 static const char
 865 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 866 /*      Inv i  L  p  F  &  O  vt r4 */
 867         {0},
 868         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 869         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 870         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 871         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 872         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 873         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 874         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 875         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 876 };
 877
 878 /* reduce the size of this table */
 879 static const char
 880 shift_table [STACK_MAX] [STACK_MAX] = {
 881         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 886         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 887         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 888         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 889 };
 890
 891 /*
 892  * Tables to map from the non-specific opcode to the matching
 893  * type-specific opcode.
 894  */
 895 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 896 static const guint16
 897 binops_op_map [STACK_MAX] = {
 898         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
 899 };
 900
 901 /* handles from CEE_NEG to CEE_CONV_U8 */
 902 static const guint16
 903 unops_op_map [STACK_MAX] = {
 904         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
 905 };
 906
 907 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 908 static const guint16
 909 ovfops_op_map [STACK_MAX] = {
 910         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
 911 };
 912
 913 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 914 static const guint16
 915 ovf2ops_op_map [STACK_MAX] = {
 916         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
 917 };
 918
 919 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 920 static const guint16
 921 ovf3ops_op_map [STACK_MAX] = {
 922         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
 923 };
 924
 925 /* handles from CEE_BEQ to CEE_BLT_UN */
 926 static const guint16
 927 beqops_op_map [STACK_MAX] = {
 928         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
 929 };
 930
 931 /* handles from CEE_CEQ to CEE_CLT_UN */
 932 static const guint16
 933 ceqops_op_map [STACK_MAX] = {
 934         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
 935 };
 936
 937 /*
 938  * Sets ins->type (the type on the eval stack) according to the
 939  * type of the opcode and the arguments to it.
 940  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 941  *
 942  * FIXME: this function sets ins->type unconditionally in some cases, but
 943  * it should set it to invalid for some types (a conv.x on an object)
 944  */
 945 static void
 946 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 947 {
 948         switch (ins->opcode) {
 949         /* binops */
 950         case CEE_ADD:
 951         case CEE_SUB:
 952         case CEE_MUL:
 953         case CEE_DIV:
 954         case CEE_REM:
 955                 /* FIXME: check unverifiable args for STACK_MP */
 956                 ins->type = bin_num_table [src1->type] [src2->type];
 957                 ins->opcode += binops_op_map [ins->type];
 958                 break;
 959         case CEE_DIV_UN:
 960         case CEE_REM_UN:
 961         case CEE_AND:
 962         case CEE_OR:
 963         case CEE_XOR:
 964                 ins->type = bin_int_table [src1->type] [src2->type];
 965                 ins->opcode += binops_op_map [ins->type];
 966                 break;
 967         case CEE_SHL:
 968         case CEE_SHR:
 969         case CEE_SHR_UN:
 970                 ins->type = shift_table [src1->type] [src2->type];
 971                 ins->opcode += binops_op_map [ins->type];
 972                 break;
 973         case OP_COMPARE:
 974         case OP_LCOMPARE:
 975         case OP_ICOMPARE:
 976                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 977                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 978                         ins->opcode = OP_LCOMPARE;
 979                 else if (src1->type == STACK_R4)
 980                         ins->opcode = OP_RCOMPARE;
 981                 else if (src1->type == STACK_R8)
 982                         ins->opcode = OP_FCOMPARE;
 983                 else
 984                         ins->opcode = OP_ICOMPARE;
 985                 break;
 986         case OP_ICOMPARE_IMM:
 987                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 988                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 989                         ins->opcode = OP_LCOMPARE_IMM;
 990                 break;
 991         case CEE_BEQ:
 992         case CEE_BGE:
 993         case CEE_BGT:
 994         case CEE_BLE:
 995         case CEE_BLT:
 996         case CEE_BNE_UN:
 997         case CEE_BGE_UN:
 998         case CEE_BGT_UN:
 999         case CEE_BLE_UN:
1000         case CEE_BLT_UN:
1001                 ins->opcode += beqops_op_map [src1->type];
1002                 break;
1003         case OP_CEQ:
1004                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1005                 ins->opcode += ceqops_op_map [src1->type];
1006                 break;
1007         case OP_CGT:
1008         case OP_CGT_UN:
1009         case OP_CLT:
1010         case OP_CLT_UN:
1011                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1012                 ins->opcode += ceqops_op_map [src1->type];
1013                 break;
1014         /* unops */
1015         case CEE_NEG:
1016                 ins->type = neg_table [src1->type];
1017                 ins->opcode += unops_op_map [ins->type];
1018                 break;
1019         case CEE_NOT:
1020                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1021                         ins->type = src1->type;
1022                 else
1023                         ins->type = STACK_INV;
1024                 ins->opcode += unops_op_map [ins->type];
1025                 break;
1026         case CEE_CONV_I1:
1027         case CEE_CONV_I2:
1028         case CEE_CONV_I4:
1029         case CEE_CONV_U4:
1030                 ins->type = STACK_I4;
1031                 ins->opcode += unops_op_map [src1->type];
1032                 break;
1033         case CEE_CONV_R_UN:
1034                 ins->type = STACK_R8;
1035                 switch (src1->type) {
1036                 case STACK_I4:
1037                 case STACK_PTR:
1038                         ins->opcode = OP_ICONV_TO_R_UN;
1039                         break;
1040                 case STACK_I8:
1041                         ins->opcode = OP_LCONV_TO_R_UN;
1042                         break;
1043                 }
1044                 break;
1045         case CEE_CONV_OVF_I1:
1046         case CEE_CONV_OVF_U1:
1047         case CEE_CONV_OVF_I2:
1048         case CEE_CONV_OVF_U2:
1049         case CEE_CONV_OVF_I4:
1050         case CEE_CONV_OVF_U4:
1051                 ins->type = STACK_I4;
1052                 ins->opcode += ovf3ops_op_map [src1->type];
1053                 break;
1054         case CEE_CONV_OVF_I_UN:
1055         case CEE_CONV_OVF_U_UN:
1056                 ins->type = STACK_PTR;
1057                 ins->opcode += ovf2ops_op_map [src1->type];
1058                 break;
1059         case CEE_CONV_OVF_I1_UN:
1060         case CEE_CONV_OVF_I2_UN:
1061         case CEE_CONV_OVF_I4_UN:
1062         case CEE_CONV_OVF_U1_UN:
1063         case CEE_CONV_OVF_U2_UN:
1064         case CEE_CONV_OVF_U4_UN:
1065                 ins->type = STACK_I4;
1066                 ins->opcode += ovf2ops_op_map [src1->type];
1067                 break;
1068         case CEE_CONV_U:
1069                 ins->type = STACK_PTR;
1070                 switch (src1->type) {
1071                 case STACK_I4:
1072                         ins->opcode = OP_ICONV_TO_U;
1073                         break;
1074                 case STACK_PTR:
1075                 case STACK_MP:
1076 #if SIZEOF_VOID_P == 8
1077                         ins->opcode = OP_LCONV_TO_U;
1078 #else
1079                         ins->opcode = OP_MOVE;
1080 #endif
1081                         break;
1082                 case STACK_I8:
1083                         ins->opcode = OP_LCONV_TO_U;
1084                         break;
1085                 case STACK_R8:
1086                         ins->opcode = OP_FCONV_TO_U;
1087                         break;
1088                 }
1089                 break;
1090         case CEE_CONV_I8:
1091         case CEE_CONV_U8:
1092                 ins->type = STACK_I8;
1093                 ins->opcode += unops_op_map [src1->type];
1094                 break;
1095         case CEE_CONV_OVF_I8:
1096         case CEE_CONV_OVF_U8:
1097                 ins->type = STACK_I8;
1098                 ins->opcode += ovf3ops_op_map [src1->type];
1099                 break;
1100         case CEE_CONV_OVF_U8_UN:
1101         case CEE_CONV_OVF_I8_UN:
1102                 ins->type = STACK_I8;
1103                 ins->opcode += ovf2ops_op_map [src1->type];
1104                 break;
1105         case CEE_CONV_R4:
1106                 ins->type = cfg->r4_stack_type;
1107                 ins->opcode += unops_op_map [src1->type];
1108                 break;
1109         case CEE_CONV_R8:
1110                 ins->type = STACK_R8;
1111                 ins->opcode += unops_op_map [src1->type];
1112                 break;
1113         case OP_CKFINITE:
1114                 ins->type = STACK_R8;
1115                 break;
1116         case CEE_CONV_U2:
1117         case CEE_CONV_U1:
1118                 ins->type = STACK_I4;
1119                 ins->opcode += ovfops_op_map [src1->type];
1120                 break;
1121         case CEE_CONV_I:
1122         case CEE_CONV_OVF_I:
1123         case CEE_CONV_OVF_U:
1124                 ins->type = STACK_PTR;
1125                 ins->opcode += ovfops_op_map [src1->type];
1126                 break;
1127         case CEE_ADD_OVF:
1128         case CEE_ADD_OVF_UN:
1129         case CEE_MUL_OVF:
1130         case CEE_MUL_OVF_UN:
1131         case CEE_SUB_OVF:
1132         case CEE_SUB_OVF_UN:
1133                 ins->type = bin_num_table [src1->type] [src2->type];
1134                 ins->opcode += ovfops_op_map [src1->type];
1135                 if (ins->type == STACK_R8)
1136                         ins->type = STACK_INV;
1137                 break;
1138         case OP_LOAD_MEMBASE:
1139                 ins->type = STACK_PTR;
1140                 break;
1141         case OP_LOADI1_MEMBASE:
1142         case OP_LOADU1_MEMBASE:
1143         case OP_LOADI2_MEMBASE:
1144         case OP_LOADU2_MEMBASE:
1145         case OP_LOADI4_MEMBASE:
1146         case OP_LOADU4_MEMBASE:
1147                 ins->type = STACK_PTR;
1148                 break;
1149         case OP_LOADI8_MEMBASE:
1150                 ins->type = STACK_I8;
1151                 break;
1152         case OP_LOADR4_MEMBASE:
1153                 ins->type = cfg->r4_stack_type;
1154                 break;
1155         case OP_LOADR8_MEMBASE:
1156                 ins->type = STACK_R8;
1157                 break;
1158         default:
1159                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1160                 break;
1161         }
1162
1163         if (ins->type == STACK_MP)
1164                 ins->klass = mono_defaults.object_class;
1165 }
1166
1167 static const char
1168 ldind_type [] = {
1169         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1170 };
1171
1172 #if 0
1173
1174 static const char
1175 param_table [STACK_MAX] [STACK_MAX] = {
1176         {0},
1177 };
1178
1179 static int
1180 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1181 {
1182         int i;
1183
1184         if (sig->hasthis) {
1185                 switch (args->type) {
1186                 case STACK_I4:
1187                 case STACK_I8:
1188                 case STACK_R8:
1189                 case STACK_VTYPE:
1190                 case STACK_INV:
1191                         return 0;
1192                 }
1193                 args++;
1194         }
1195         for (i = 0; i < sig->param_count; ++i) {
1196                 switch (args [i].type) {
1197                 case STACK_INV:
1198                         return 0;
1199                 case STACK_MP:
1200                         if (!sig->params [i]->byref)
1201                                 return 0;
1202                         continue;
1203                 case STACK_OBJ:
1204                         if (sig->params [i]->byref)
1205                                 return 0;
1206                         switch (sig->params [i]->type) {
1207                         case MONO_TYPE_CLASS:
1208                         case MONO_TYPE_STRING:
1209                         case MONO_TYPE_OBJECT:
1210                         case MONO_TYPE_SZARRAY:
1211                         case MONO_TYPE_ARRAY:
1212                                 break;
1213                         default:
1214                                 return 0;
1215                         }
1216                         continue;
1217                 case STACK_R8:
1218                         if (sig->params [i]->byref)
1219                                 return 0;
1220                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1221                                 return 0;
1222                         continue;
1223                 case STACK_PTR:
1224                 case STACK_I4:
1225                 case STACK_I8:
1226                 case STACK_VTYPE:
1227                         break;
1228                 }
1229                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1230                         return 0;*/
1231         }
1232         return 1;
1233 }
1234 #endif
1235
1236 /*
1237  * When we need a pointer to the current domain many times in a method, we
1238  * call mono_domain_get() once and we store the result in a local variable.
1239  * This function returns the variable that represents the MonoDomain*.
1240  */
1241 inline static MonoInst *
1242 mono_get_domainvar (MonoCompile *cfg)
1243 {
1244         if (!cfg->domainvar)
1245                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1246         return cfg->domainvar;
1247 }
1248
1249 /*
1250  * The got_var contains the address of the Global Offset Table when AOT
1251  * compiling.
1252  */
1253 MonoInst *
1254 mono_get_got_var (MonoCompile *cfg)
1255 {
1256         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1257                 return NULL;
1258         if (!cfg->got_var) {
1259                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1260         }
1261         return cfg->got_var;
1262 }
1263
1264 static void
1265 mono_create_rgctx_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->rgctx_var) {
1268                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1269                 /* force the var to be stack allocated */
1270                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1271         }
1272 }
1273
1274 static MonoInst *
1275 mono_get_vtable_var (MonoCompile *cfg)
1276 {
1277         g_assert (cfg->gshared);
1278
1279         mono_create_rgctx_var (cfg);
1280
1281         return cfg->rgctx_var;
1282 }
1283
1284 static MonoType*
1285 type_from_stack_type (MonoInst *ins) {
1286         switch (ins->type) {
1287         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1288         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1289         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1290         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1291         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1292         case STACK_MP:
1293                 return &ins->klass->this_arg;
1294         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1295         case STACK_VTYPE: return &ins->klass->byval_arg;
1296         default:
1297                 g_error ("stack type %d to monotype not handled\n", ins->type);
1298         }
1299         return NULL;
1300 }
1301
1302 static G_GNUC_UNUSED int
1303 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1304 {
1305         t = mono_type_get_underlying_type (t);
1306         switch (t->type) {
1307         case MONO_TYPE_I1:
1308         case MONO_TYPE_U1:
1309         case MONO_TYPE_I2:
1310         case MONO_TYPE_U2:
1311         case MONO_TYPE_I4:
1312         case MONO_TYPE_U4:
1313                 return STACK_I4;
1314         case MONO_TYPE_I:
1315         case MONO_TYPE_U:
1316         case MONO_TYPE_PTR:
1317         case MONO_TYPE_FNPTR:
1318                 return STACK_PTR;
1319         case MONO_TYPE_CLASS:
1320         case MONO_TYPE_STRING:
1321         case MONO_TYPE_OBJECT:
1322         case MONO_TYPE_SZARRAY:
1323         case MONO_TYPE_ARRAY:
1324                 return STACK_OBJ;
1325         case MONO_TYPE_I8:
1326         case MONO_TYPE_U8:
1327                 return STACK_I8;
1328         case MONO_TYPE_R4:
1329                 return cfg->r4_stack_type;
1330         case MONO_TYPE_R8:
1331                 return STACK_R8;
1332         case MONO_TYPE_VALUETYPE:
1333         case MONO_TYPE_TYPEDBYREF:
1334                 return STACK_VTYPE;
1335         case MONO_TYPE_GENERICINST:
1336                 if (mono_type_generic_inst_is_valuetype (t))
1337                         return STACK_VTYPE;
1338                 else
1339                         return STACK_OBJ;
1340                 break;
1341         default:
1342                 g_assert_not_reached ();
1343         }
1344
1345         return -1;
1346 }
1347
1348 static MonoClass*
1349 array_access_to_klass (int opcode)
1350 {
1351         switch (opcode) {
1352         case CEE_LDELEM_U1:
1353                 return mono_defaults.byte_class;
1354         case CEE_LDELEM_U2:
1355                 return mono_defaults.uint16_class;
1356         case CEE_LDELEM_I:
1357         case CEE_STELEM_I:
1358                 return mono_defaults.int_class;
1359         case CEE_LDELEM_I1:
1360         case CEE_STELEM_I1:
1361                 return mono_defaults.sbyte_class;
1362         case CEE_LDELEM_I2:
1363         case CEE_STELEM_I2:
1364                 return mono_defaults.int16_class;
1365         case CEE_LDELEM_I4:
1366         case CEE_STELEM_I4:
1367                 return mono_defaults.int32_class;
1368         case CEE_LDELEM_U4:
1369                 return mono_defaults.uint32_class;
1370         case CEE_LDELEM_I8:
1371         case CEE_STELEM_I8:
1372                 return mono_defaults.int64_class;
1373         case CEE_LDELEM_R4:
1374         case CEE_STELEM_R4:
1375                 return mono_defaults.single_class;
1376         case CEE_LDELEM_R8:
1377         case CEE_STELEM_R8:
1378                 return mono_defaults.double_class;
1379         case CEE_LDELEM_REF:
1380         case CEE_STELEM_REF:
1381                 return mono_defaults.object_class;
1382         default:
1383                 g_assert_not_reached ();
1384         }
1385         return NULL;
1386 }
1387
1388 /*
1389  * We try to share variables when possible
1390  */
1391 static MonoInst *
1392 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1393 {
1394         MonoInst *res;
1395         int pos, vnum;
1396
1397         /* inlining can result in deeper stacks */
1398         if (slot >= cfg->header->max_stack)
1399                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1400
1401         pos = ins->type - 1 + slot * STACK_MAX;
1402
1403         switch (ins->type) {
1404         case STACK_I4:
1405         case STACK_I8:
1406         case STACK_R8:
1407         case STACK_PTR:
1408         case STACK_MP:
1409         case STACK_OBJ:
1410                 if ((vnum = cfg->intvars [pos]))
1411                         return cfg->varinfo [vnum];
1412                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1413                 cfg->intvars [pos] = res->inst_c0;
1414                 break;
1415         default:
1416                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1417         }
1418         return res;
1419 }
1420
1421 static void
1422 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1423 {
1424         /*
1425          * Don't use this if a generic_context is set, since that means AOT can't
1426          * look up the method using just the image+token.
1427          * table == 0 means this is a reference made from a wrapper.
1428          */
1429         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1430                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1431                 jump_info_token->image = image;
1432                 jump_info_token->token = token;
1433                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1434         }
1435 }
1436
1437 /*
1438  * This function is called to handle items that are left on the evaluation stack
1439  * at basic block boundaries. What happens is that we save the values to local variables
1440  * and we reload them later when first entering the target basic block (with the
1441  * handle_loaded_temps () function).
1442  * A single joint point will use the same variables (stored in the array bb->out_stack or
1443  * bb->in_stack, if the basic block is before or after the joint point).
1444  *
1445  * This function needs to be called _before_ emitting the last instruction of
1446  * the bb (i.e. before emitting a branch).
1447  * If the stack merge fails at a join point, cfg->unverifiable is set.
1448  */
1449 static void
1450 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1451 {
1452         int i, bindex;
1453         MonoBasicBlock *bb = cfg->cbb;
1454         MonoBasicBlock *outb;
1455         MonoInst *inst, **locals;
1456         gboolean found;
1457
1458         if (!count)
1459                 return;
1460         if (cfg->verbose_level > 3)
1461                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1462         if (!bb->out_scount) {
1463                 bb->out_scount = count;
1464                 //printf ("bblock %d has out:", bb->block_num);
1465                 found = FALSE;
1466                 for (i = 0; i < bb->out_count; ++i) {
1467                         outb = bb->out_bb [i];
1468                         /* exception handlers are linked, but they should not be considered for stack args */
1469                         if (outb->flags & BB_EXCEPTION_HANDLER)
1470                                 continue;
1471                         //printf (" %d", outb->block_num);
1472                         if (outb->in_stack) {
1473                                 found = TRUE;
1474                                 bb->out_stack = outb->in_stack;
1475                                 break;
1476                         }
1477                 }
1478                 //printf ("\n");
1479                 if (!found) {
1480                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1481                         for (i = 0; i < count; ++i) {
1482                                 /*
1483                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1484                                  * stack slot and if they are of the same type.
1485                                  * This won't cause conflicts since if 'local' is used to
1486                                  * store one of the values in the in_stack of a bblock, then
1487                                  * the same variable will be used for the same outgoing stack
1488                                  * slot as well.
1489                                  * This doesn't work when inlining methods, since the bblocks
1490                                  * in the inlined methods do not inherit their in_stack from
1491                                  * the bblock they are inlined to. See bug #58863 for an
1492                                  * example.
1493                                  */
1494                                 if (cfg->inlined_method)
1495                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1496                                 else
1497                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1498                         }
1499                 }
1500         }
1501
1502         for (i = 0; i < bb->out_count; ++i) {
1503                 outb = bb->out_bb [i];
1504                 /* exception handlers are linked, but they should not be considered for stack args */
1505                 if (outb->flags & BB_EXCEPTION_HANDLER)
1506                         continue;
1507                 if (outb->in_scount) {
1508                         if (outb->in_scount != bb->out_scount) {
1509                                 cfg->unverifiable = TRUE;
1510                                 return;
1511                         }
1512                         continue; /* check they are the same locals */
1513                 }
1514                 outb->in_scount = count;
1515                 outb->in_stack = bb->out_stack;
1516         }
1517
1518         locals = bb->out_stack;
1519         cfg->cbb = bb;
1520         for (i = 0; i < count; ++i) {
1521                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1522                 inst->cil_code = sp [i]->cil_code;
1523                 sp [i] = locals [i];
1524                 if (cfg->verbose_level > 3)
1525                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1526         }
1527
1528         /*
1529          * It is possible that the out bblocks already have in_stack assigned, and
1530          * the in_stacks differ. In this case, we will store to all the different
1531          * in_stacks.
1532          */
1533
1534         found = TRUE;
1535         bindex = 0;
1536         while (found) {
1537                 /* Find a bblock which has a different in_stack */
1538                 found = FALSE;
1539                 while (bindex < bb->out_count) {
1540                         outb = bb->out_bb [bindex];
1541                         /* exception handlers are linked, but they should not be considered for stack args */
1542                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1543                                 bindex++;
1544                                 continue;
1545                         }
1546                         if (outb->in_stack != locals) {
1547                                 for (i = 0; i < count; ++i) {
1548                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1549                                         inst->cil_code = sp [i]->cil_code;
1550                                         sp [i] = locals [i];
1551                                         if (cfg->verbose_level > 3)
1552                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1553                                 }
1554                                 locals = outb->in_stack;
1555                                 found = TRUE;
1556                                 break;
1557                         }
1558                         bindex ++;
1559                 }
1560         }
1561 }
1562
1563 static MonoInst*
1564 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1565 {
1566         MonoInst *ins;
1567
1568         if (cfg->compile_aot) {
1569                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1570         } else {
1571                 MonoJumpInfo ji;
1572                 gpointer target;
1573                 MonoError error;
1574
1575                 ji.type = patch_type;
1576                 ji.data.target = data;
1577                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1578                 mono_error_assert_ok (&error);
1579
1580                 EMIT_NEW_PCONST (cfg, ins, target);
1581         }
1582         return ins;
1583 }
1584
1585 MonoInst*
1586 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1587 {
1588         return emit_runtime_constant (cfg, patch_type, data);
1589 }
1590
1591 static void
1592 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1593 {
1594         int val_reg;
1595
1596         g_assert (val == 0);
1597
1598         if (align == 0)
1599                 align = 4;
1600
1601         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1602                 switch (size) {
1603                 case 1:
1604                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1605                         return;
1606                 case 2:
1607                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1608                         return;
1609                 case 4:
1610                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1611                         return;
1612 #if SIZEOF_REGISTER == 8
1613                 case 8:
1614                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1615                         return;
1616 #endif
1617                 }
1618         }
1619
1620         val_reg = alloc_preg (cfg);
1621
1622         if (SIZEOF_REGISTER == 8)
1623                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1624         else
1625                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1626
1627         if (align < 4) {
1628                 /* This could be optimized further if neccesary */
1629                 while (size >= 1) {
1630                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1631                         offset += 1;
1632                         size -= 1;
1633                 }
1634                 return;
1635         }
1636
1637         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1638                 if (offset % 8) {
1639                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1640                         offset += 4;
1641                         size -= 4;
1642                 }
1643                 while (size >= 8) {
1644                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1645                         offset += 8;
1646                         size -= 8;
1647                 }
1648         }
1649
1650         while (size >= 4) {
1651                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1652                 offset += 4;
1653                 size -= 4;
1654         }
1655         while (size >= 2) {
1656                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1657                 offset += 2;
1658                 size -= 2;
1659         }
1660         while (size >= 1) {
1661                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1662                 offset += 1;
1663                 size -= 1;
1664         }
1665 }
1666
1667 void
1668 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1669 {
1670         int cur_reg;
1671
1672         if (align == 0)
1673                 align = 4;
1674
1675         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1676         g_assert (size < 10000);
1677
1678         if (align < 4) {
1679                 /* This could be optimized further if neccesary */
1680                 while (size >= 1) {
1681                         cur_reg = alloc_preg (cfg);
1682                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1683                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1684                         doffset += 1;
1685                         soffset += 1;
1686                         size -= 1;
1687                 }
1688         }
1689
1690         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1691                 while (size >= 8) {
1692                         cur_reg = alloc_preg (cfg);
1693                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1694                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1695                         doffset += 8;
1696                         soffset += 8;
1697                         size -= 8;
1698                 }
1699         }
1700
1701         while (size >= 4) {
1702                 cur_reg = alloc_preg (cfg);
1703                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1704                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1705                 doffset += 4;
1706                 soffset += 4;
1707                 size -= 4;
1708         }
1709         while (size >= 2) {
1710                 cur_reg = alloc_preg (cfg);
1711                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1712                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1713                 doffset += 2;
1714                 soffset += 2;
1715                 size -= 2;
1716         }
1717         while (size >= 1) {
1718                 cur_reg = alloc_preg (cfg);
1719                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1720                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1721                 doffset += 1;
1722                 soffset += 1;
1723                 size -= 1;
1724         }
1725 }
1726
1727 static MonoInst*
1728 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1729 {
1730         int tls_offset = mono_tls_get_tls_offset (key);
1731
1732         if (cfg->compile_aot)
1733                 return NULL;
1734
1735         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1736                 MonoInst *ins;
1737                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1738                 ins->dreg = mono_alloc_preg (cfg);
1739                 ins->inst_offset = tls_offset;
1740                 return ins;
1741         }
1742         return NULL;
1743 }
1744
1745 static MonoInst*
1746 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1747 {
1748         int tls_offset = mono_tls_get_tls_offset (key);
1749
1750         if (cfg->compile_aot)
1751                 return NULL;
1752
1753         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1754                 MonoInst *ins;
1755                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1756                 ins->sreg1 = value->dreg;
1757                 ins->inst_offset = tls_offset;
1758                 return ins;
1759         }
1760         return NULL;
1761 }
1762
1763
1764 MonoInst*
1765 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1766 {
1767         MonoInst *fast_tls = NULL;
1768
1769         if (!mini_get_debug_options ()->use_fallback_tls)
1770                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1771
1772         if (fast_tls) {
1773                 MONO_ADD_INS (cfg->cbb, fast_tls);
1774                 return fast_tls;
1775         }
1776
1777         if (cfg->compile_aot) {
1778                 MonoInst *addr;
1779                 /*
1780                  * tls getters are critical pieces of code and we don't want to resolve them
1781                  * through the standard plt/tramp mechanism since we might expose ourselves
1782                  * to crashes and infinite recursions.
1783                  */
1784                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1785                 return mono_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1786         } else {
1787                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1788                 return mono_emit_jit_icall (cfg, getter, NULL);
1789         }
1790 }
1791
1792 static MonoInst*
1793 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1794 {
1795         MonoInst *fast_tls = NULL;
1796
1797         if (!mini_get_debug_options ()->use_fallback_tls)
1798                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1799
1800         if (fast_tls) {
1801                 MONO_ADD_INS (cfg->cbb, fast_tls);
1802                 return fast_tls;
1803         }
1804
1805         if (cfg->compile_aot) {
1806                 MonoInst *addr;
1807                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1808                 return mono_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1809         } else {
1810                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1811                 return mono_emit_jit_icall (cfg, setter, &value);
1812         }
1813 }
1814
1815 /*
1816  * emit_push_lmf:
1817  *
1818  *   Emit IR to push the current LMF onto the LMF stack.
1819  */
1820 static void
1821 emit_push_lmf (MonoCompile *cfg)
1822 {
1823         /*
1824          * Emit IR to push the LMF:
1825          * lmf_addr = <lmf_addr from tls>
1826          * lmf->lmf_addr = lmf_addr
1827          * lmf->prev_lmf = *lmf_addr
1828          * *lmf_addr = lmf
1829          */
1830         MonoInst *ins, *lmf_ins;
1831
1832         if (!cfg->lmf_ir)
1833                 return;
1834
1835         int lmf_reg, prev_lmf_reg;
1836         /*
1837          * Store lmf_addr in a variable, so it can be allocated to a global register.
1838          */
1839         if (!cfg->lmf_addr_var)
1840                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1841
1842 #ifdef HOST_WIN32
1843         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1844         g_assert (ins);
1845         int jit_tls_dreg = ins->dreg;
1846
1847         lmf_reg = alloc_preg (cfg);
1848         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1849 #else
1850         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1851         g_assert (lmf_ins);
1852 #endif
1853         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1854
1855         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1856         lmf_reg = ins->dreg;
1857
1858         prev_lmf_reg = alloc_preg (cfg);
1859         /* Save previous_lmf */
1860         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1861         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1862         /* Set new lmf */
1863         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1864 }
1865
1866 /*
1867  * emit_pop_lmf:
1868  *
1869  *   Emit IR to pop the current LMF from the LMF stack.
1870  */
1871 static void
1872 emit_pop_lmf (MonoCompile *cfg)
1873 {
1874         int lmf_reg, lmf_addr_reg;
1875         MonoInst *ins;
1876
1877         if (!cfg->lmf_ir)
1878                 return;
1879
1880         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1881         lmf_reg = ins->dreg;
1882
1883         int prev_lmf_reg;
1884         /*
1885          * Emit IR to pop the LMF:
1886          * *(lmf->lmf_addr) = lmf->prev_lmf
1887          */
1888         /* This could be called before emit_push_lmf () */
1889         if (!cfg->lmf_addr_var)
1890                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1891         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1892
1893         prev_lmf_reg = alloc_preg (cfg);
1894         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1895         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1896 }
1897
1898 static void
1899 emit_instrumentation_call (MonoCompile *cfg, void *func)
1900 {
1901         MonoInst *iargs [1];
1902
1903         /*
1904          * Avoid instrumenting inlined methods since it can
1905          * distort profiling results.
1906          */
1907         if (cfg->method != cfg->current_method)
1908                 return;
1909
1910         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
1911                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1912                 mono_emit_jit_icall (cfg, func, iargs);
1913         }
1914 }
1915
1916 static int
1917 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1918 {
1919 handle_enum:
1920         type = mini_get_underlying_type (type);
1921         switch (type->type) {
1922         case MONO_TYPE_VOID:
1923                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1924         case MONO_TYPE_I1:
1925         case MONO_TYPE_U1:
1926         case MONO_TYPE_I2:
1927         case MONO_TYPE_U2:
1928         case MONO_TYPE_I4:
1929         case MONO_TYPE_U4:
1930                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1931         case MONO_TYPE_I:
1932         case MONO_TYPE_U:
1933         case MONO_TYPE_PTR:
1934         case MONO_TYPE_FNPTR:
1935                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1936         case MONO_TYPE_CLASS:
1937         case MONO_TYPE_STRING:
1938         case MONO_TYPE_OBJECT:
1939         case MONO_TYPE_SZARRAY:
1940         case MONO_TYPE_ARRAY:
1941                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1942         case MONO_TYPE_I8:
1943         case MONO_TYPE_U8:
1944                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1945         case MONO_TYPE_R4:
1946                 if (cfg->r4fp)
1947                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1948                 else
1949                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1950         case MONO_TYPE_R8:
1951                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1952         case MONO_TYPE_VALUETYPE:
1953                 if (type->data.klass->enumtype) {
1954                         type = mono_class_enum_basetype (type->data.klass);
1955                         goto handle_enum;
1956                 } else
1957                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1958         case MONO_TYPE_TYPEDBYREF:
1959                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1960         case MONO_TYPE_GENERICINST:
1961                 type = &type->data.generic_class->container_class->byval_arg;
1962                 goto handle_enum;
1963         case MONO_TYPE_VAR:
1964         case MONO_TYPE_MVAR:
1965                 /* gsharedvt */
1966                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1967         default:
1968                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1969         }
1970         return -1;
1971 }
1972
1973 //XXX this ignores if t is byref
1974 #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)))))
1975
1976 /*
1977  * target_type_is_incompatible:
1978  * @cfg: MonoCompile context
1979  *
1980  * Check that the item @arg on the evaluation stack can be stored
1981  * in the target type (can be a local, or field, etc).
1982  * The cfg arg can be used to check if we need verification or just
1983  * validity checks.
1984  *
1985  * Returns: non-0 value if arg can't be stored on a target.
1986  */
1987 static int
1988 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1989 {
1990         MonoType *simple_type;
1991         MonoClass *klass;
1992
1993         if (target->byref) {
1994                 /* FIXME: check that the pointed to types match */
1995                 if (arg->type == STACK_MP) {
1996                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1997                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1998                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1999
2000                         /* if the target is native int& or same type */
2001                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2002                                 return 0;
2003
2004                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2005                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2006                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2007                                 return 0;
2008                         return 1;
2009                 }
2010                 if (arg->type == STACK_PTR)
2011                         return 0;
2012                 return 1;
2013         }
2014
2015         simple_type = mini_get_underlying_type (target);
2016         switch (simple_type->type) {
2017         case MONO_TYPE_VOID:
2018                 return 1;
2019         case MONO_TYPE_I1:
2020         case MONO_TYPE_U1:
2021         case MONO_TYPE_I2:
2022         case MONO_TYPE_U2:
2023         case MONO_TYPE_I4:
2024         case MONO_TYPE_U4:
2025                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2026                         return 1;
2027                 return 0;
2028         case MONO_TYPE_PTR:
2029                 /* STACK_MP is needed when setting pinned locals */
2030                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2031                         return 1;
2032                 return 0;
2033         case MONO_TYPE_I:
2034         case MONO_TYPE_U:
2035         case MONO_TYPE_FNPTR:
2036                 /*
2037                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2038                  * in native int. (#688008).
2039                  */
2040                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2041                         return 1;
2042                 return 0;
2043         case MONO_TYPE_CLASS:
2044         case MONO_TYPE_STRING:
2045         case MONO_TYPE_OBJECT:
2046         case MONO_TYPE_SZARRAY:
2047         case MONO_TYPE_ARRAY:
2048                 if (arg->type != STACK_OBJ)
2049                         return 1;
2050                 /* FIXME: check type compatibility */
2051                 return 0;
2052         case MONO_TYPE_I8:
2053         case MONO_TYPE_U8:
2054                 if (arg->type != STACK_I8)
2055                         return 1;
2056                 return 0;
2057         case MONO_TYPE_R4:
2058                 if (arg->type != cfg->r4_stack_type)
2059                         return 1;
2060                 return 0;
2061         case MONO_TYPE_R8:
2062                 if (arg->type != STACK_R8)
2063                         return 1;
2064                 return 0;
2065         case MONO_TYPE_VALUETYPE:
2066                 if (arg->type != STACK_VTYPE)
2067                         return 1;
2068                 klass = mono_class_from_mono_type (simple_type);
2069                 if (klass != arg->klass)
2070                         return 1;
2071                 return 0;
2072         case MONO_TYPE_TYPEDBYREF:
2073                 if (arg->type != STACK_VTYPE)
2074                         return 1;
2075                 klass = mono_class_from_mono_type (simple_type);
2076                 if (klass != arg->klass)
2077                         return 1;
2078                 return 0;
2079         case MONO_TYPE_GENERICINST:
2080                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2081                         MonoClass *target_class;
2082                         if (arg->type != STACK_VTYPE)
2083                                 return 1;
2084                         klass = mono_class_from_mono_type (simple_type);
2085                         target_class = mono_class_from_mono_type (target);
2086                         /* The second cases is needed when doing partial sharing */
2087                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2088                                 return 1;
2089                         return 0;
2090                 } else {
2091                         if (arg->type != STACK_OBJ)
2092                                 return 1;
2093                         /* FIXME: check type compatibility */
2094                         return 0;
2095                 }
2096         case MONO_TYPE_VAR:
2097         case MONO_TYPE_MVAR:
2098                 g_assert (cfg->gshared);
2099                 if (mini_type_var_is_vt (simple_type)) {
2100                         if (arg->type != STACK_VTYPE)
2101                                 return 1;
2102                 } else {
2103                         if (arg->type != STACK_OBJ)
2104                                 return 1;
2105                 }
2106                 return 0;
2107         default:
2108                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2109         }
2110         return 1;
2111 }
2112
2113 /*
2114  * Prepare arguments for passing to a function call.
2115  * Return a non-zero value if the arguments can't be passed to the given
2116  * signature.
2117  * The type checks are not yet complete and some conversions may need
2118  * casts on 32 or 64 bit architectures.
2119  *
2120  * FIXME: implement this using target_type_is_incompatible ()
2121  */
2122 static int
2123 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2124 {
2125         MonoType *simple_type;
2126         int i;
2127
2128         if (sig->hasthis) {
2129                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2130                         return 1;
2131                 args++;
2132         }
2133         for (i = 0; i < sig->param_count; ++i) {
2134                 if (sig->params [i]->byref) {
2135                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2136                                 return 1;
2137                         continue;
2138                 }
2139                 simple_type = mini_get_underlying_type (sig->params [i]);
2140 handle_enum:
2141                 switch (simple_type->type) {
2142                 case MONO_TYPE_VOID:
2143                         return 1;
2144                         continue;
2145                 case MONO_TYPE_I1:
2146                 case MONO_TYPE_U1:
2147                 case MONO_TYPE_I2:
2148                 case MONO_TYPE_U2:
2149                 case MONO_TYPE_I4:
2150                 case MONO_TYPE_U4:
2151                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2152                                 return 1;
2153                         continue;
2154                 case MONO_TYPE_I:
2155                 case MONO_TYPE_U:
2156                 case MONO_TYPE_PTR:
2157                 case MONO_TYPE_FNPTR:
2158                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2159                                 return 1;
2160                         continue;
2161                 case MONO_TYPE_CLASS:
2162                 case MONO_TYPE_STRING:
2163                 case MONO_TYPE_OBJECT:
2164                 case MONO_TYPE_SZARRAY:
2165                 case MONO_TYPE_ARRAY:
2166                         if (args [i]->type != STACK_OBJ)
2167                                 return 1;
2168                         continue;
2169                 case MONO_TYPE_I8:
2170                 case MONO_TYPE_U8:
2171                         if (args [i]->type != STACK_I8)
2172                                 return 1;
2173                         continue;
2174                 case MONO_TYPE_R4:
2175                         if (args [i]->type != cfg->r4_stack_type)
2176                                 return 1;
2177                         continue;
2178                 case MONO_TYPE_R8:
2179                         if (args [i]->type != STACK_R8)
2180                                 return 1;
2181                         continue;
2182                 case MONO_TYPE_VALUETYPE:
2183                         if (simple_type->data.klass->enumtype) {
2184                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2185                                 goto handle_enum;
2186                         }
2187                         if (args [i]->type != STACK_VTYPE)
2188                                 return 1;
2189                         continue;
2190                 case MONO_TYPE_TYPEDBYREF:
2191                         if (args [i]->type != STACK_VTYPE)
2192                                 return 1;
2193                         continue;
2194                 case MONO_TYPE_GENERICINST:
2195                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2196                         goto handle_enum;
2197                 case MONO_TYPE_VAR:
2198                 case MONO_TYPE_MVAR:
2199                         /* gsharedvt */
2200                         if (args [i]->type != STACK_VTYPE)
2201                                 return 1;
2202                         continue;
2203                 default:
2204                         g_error ("unknown type 0x%02x in check_call_signature",
2205                                  simple_type->type);
2206                 }
2207         }
2208         return 0;
2209 }
2210
2211 static int
2212 callvirt_to_call (int opcode)
2213 {
2214         switch (opcode) {
2215         case OP_CALL_MEMBASE:
2216                 return OP_CALL;
2217         case OP_VOIDCALL_MEMBASE:
2218                 return OP_VOIDCALL;
2219         case OP_FCALL_MEMBASE:
2220                 return OP_FCALL;
2221         case OP_RCALL_MEMBASE:
2222                 return OP_RCALL;
2223         case OP_VCALL_MEMBASE:
2224                 return OP_VCALL;
2225         case OP_LCALL_MEMBASE:
2226                 return OP_LCALL;
2227         default:
2228                 g_assert_not_reached ();
2229         }
2230
2231         return -1;
2232 }
2233
2234 static int
2235 callvirt_to_call_reg (int opcode)
2236 {
2237         switch (opcode) {
2238         case OP_CALL_MEMBASE:
2239                 return OP_CALL_REG;
2240         case OP_VOIDCALL_MEMBASE:
2241                 return OP_VOIDCALL_REG;
2242         case OP_FCALL_MEMBASE:
2243                 return OP_FCALL_REG;
2244         case OP_RCALL_MEMBASE:
2245                 return OP_RCALL_REG;
2246         case OP_VCALL_MEMBASE:
2247                 return OP_VCALL_REG;
2248         case OP_LCALL_MEMBASE:
2249                 return OP_LCALL_REG;
2250         default:
2251                 g_assert_not_reached ();
2252         }
2253
2254         return -1;
2255 }
2256
2257 /* Either METHOD or IMT_ARG needs to be set */
2258 static void
2259 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2260 {
2261         int method_reg;
2262
2263         if (COMPILE_LLVM (cfg)) {
2264                 if (imt_arg) {
2265                         method_reg = alloc_preg (cfg);
2266                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2267                 } else {
2268                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2269                         method_reg = ins->dreg;
2270                 }
2271
2272 #ifdef ENABLE_LLVM
2273                 call->imt_arg_reg = method_reg;
2274 #endif
2275                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2276                 return;
2277         }
2278
2279         if (imt_arg) {
2280                 method_reg = alloc_preg (cfg);
2281                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2282         } else {
2283                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2284                 method_reg = ins->dreg;
2285         }
2286
2287         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2288 }
2289
2290 static MonoJumpInfo *
2291 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2292 {
2293         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2294
2295         ji->ip.i = ip;
2296         ji->type = type;
2297         ji->data.target = target;
2298
2299         return ji;
2300 }
2301
2302 static int
2303 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2304 {
2305         if (cfg->gshared)
2306                 return mono_class_check_context_used (klass);
2307         else
2308                 return 0;
2309 }
2310
2311 static int
2312 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2313 {
2314         if (cfg->gshared)
2315                 return mono_method_check_context_used (method);
2316         else
2317                 return 0;
2318 }
2319
2320 /*
2321  * check_method_sharing:
2322  *
2323  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2324  */
2325 static void
2326 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2327 {
2328         gboolean pass_vtable = FALSE;
2329         gboolean pass_mrgctx = FALSE;
2330
2331         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2332                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2333                 gboolean sharable = FALSE;
2334
2335                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2336                         sharable = TRUE;
2337
2338                 /*
2339                  * Pass vtable iff target method might
2340                  * be shared, which means that sharing
2341                  * is enabled for its class and its
2342                  * context is sharable (and it's not a
2343                  * generic method).
2344                  */
2345                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2346                         pass_vtable = TRUE;
2347         }
2348
2349         if (mini_method_get_context (cmethod) &&
2350                 mini_method_get_context (cmethod)->method_inst) {
2351                 g_assert (!pass_vtable);
2352
2353                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2354                         pass_mrgctx = TRUE;
2355                 } else {
2356                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2357                                 pass_mrgctx = TRUE;
2358                 }
2359         }
2360
2361         if (out_pass_vtable)
2362                 *out_pass_vtable = pass_vtable;
2363         if (out_pass_mrgctx)
2364                 *out_pass_mrgctx = pass_mrgctx;
2365 }
2366
2367 inline static MonoCallInst *
2368 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2369                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2370 {
2371         MonoType *sig_ret;
2372         MonoCallInst *call;
2373 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2374         int i;
2375 #endif
2376
2377         if (cfg->llvm_only)
2378                 tail = FALSE;
2379
2380         if (tail) {
2381                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2382
2383                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2384         } else
2385                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2386
2387         call->args = args;
2388         call->signature = sig;
2389         call->rgctx_reg = rgctx;
2390         sig_ret = mini_get_underlying_type (sig->ret);
2391
2392         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2393
2394         if (tail) {
2395                 if (mini_type_is_vtype (sig_ret)) {
2396                         call->vret_var = cfg->vret_addr;
2397                         //g_assert_not_reached ();
2398                 }
2399         } else if (mini_type_is_vtype (sig_ret)) {
2400                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2401                 MonoInst *loada;
2402
2403                 temp->backend.is_pinvoke = sig->pinvoke;
2404
2405                 /*
2406                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2407                  * address of return value to increase optimization opportunities.
2408                  * Before vtype decomposition, the dreg of the call ins itself represents the
2409                  * fact the call modifies the return value. After decomposition, the call will
2410                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2411                  * will be transformed into an LDADDR.
2412                  */
2413                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2414                 loada->dreg = alloc_preg (cfg);
2415                 loada->inst_p0 = temp;
2416                 /* We reference the call too since call->dreg could change during optimization */
2417                 loada->inst_p1 = call;
2418                 MONO_ADD_INS (cfg->cbb, loada);
2419
2420                 call->inst.dreg = temp->dreg;
2421
2422                 call->vret_var = loada;
2423         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2424                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2425
2426 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2427         if (COMPILE_SOFT_FLOAT (cfg)) {
2428                 /*
2429                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2430                  * an icall, but that cannot be done during the call sequence since it would clobber
2431                  * the call registers + the stack. So we do it before emitting the call.
2432                  */
2433                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2434                         MonoType *t;
2435                         MonoInst *in = call->args [i];
2436
2437                         if (i >= sig->hasthis)
2438                                 t = sig->params [i - sig->hasthis];
2439                         else
2440                                 t = &mono_defaults.int_class->byval_arg;
2441                         t = mono_type_get_underlying_type (t);
2442
2443                         if (!t->byref && t->type == MONO_TYPE_R4) {
2444                                 MonoInst *iargs [1];
2445                                 MonoInst *conv;
2446
2447                                 iargs [0] = in;
2448                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2449
2450                                 /* The result will be in an int vreg */
2451                                 call->args [i] = conv;
2452                         }
2453                 }
2454         }
2455 #endif
2456
2457         call->need_unbox_trampoline = unbox_trampoline;
2458
2459 #ifdef ENABLE_LLVM
2460         if (COMPILE_LLVM (cfg))
2461                 mono_llvm_emit_call (cfg, call);
2462         else
2463                 mono_arch_emit_call (cfg, call);
2464 #else
2465         mono_arch_emit_call (cfg, call);
2466 #endif
2467
2468         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2469         cfg->flags |= MONO_CFG_HAS_CALLS;
2470
2471         return call;
2472 }
2473
2474 static void
2475 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2476 {
2477         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2478         cfg->uses_rgctx_reg = TRUE;
2479         call->rgctx_reg = TRUE;
2480 #ifdef ENABLE_LLVM
2481         call->rgctx_arg_reg = rgctx_reg;
2482 #endif
2483 }
2484
2485 inline static MonoInst*
2486 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2487 {
2488         MonoCallInst *call;
2489         MonoInst *ins;
2490         int rgctx_reg = -1;
2491         gboolean check_sp = FALSE;
2492
2493         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2494                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2495
2496                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2497                         check_sp = TRUE;
2498         }
2499
2500         if (rgctx_arg) {
2501                 rgctx_reg = mono_alloc_preg (cfg);
2502                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2503         }
2504
2505         if (check_sp) {
2506                 if (!cfg->stack_inbalance_var)
2507                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2508
2509                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2510                 ins->dreg = cfg->stack_inbalance_var->dreg;
2511                 MONO_ADD_INS (cfg->cbb, ins);
2512         }
2513
2514         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2515
2516         call->inst.sreg1 = addr->dreg;
2517
2518         if (imt_arg)
2519                 emit_imt_argument (cfg, call, NULL, imt_arg);
2520
2521         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2522
2523         if (check_sp) {
2524                 int sp_reg;
2525
2526                 sp_reg = mono_alloc_preg (cfg);
2527
2528                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2529                 ins->dreg = sp_reg;
2530                 MONO_ADD_INS (cfg->cbb, ins);
2531
2532                 /* Restore the stack so we don't crash when throwing the exception */
2533                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2534                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2535                 MONO_ADD_INS (cfg->cbb, ins);
2536
2537                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2538                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2539         }
2540
2541         if (rgctx_arg)
2542                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2543
2544         return (MonoInst*)call;
2545 }
2546
2547 static MonoInst*
2548 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2549
2550 static MonoInst*
2551 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2552
2553 static MonoInst*
2554 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2555                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2556 {
2557 #ifndef DISABLE_REMOTING
2558         gboolean might_be_remote = FALSE;
2559 #endif
2560         gboolean virtual_ = this_ins != NULL;
2561         gboolean enable_for_aot = TRUE;
2562         int context_used;
2563         MonoCallInst *call;
2564         MonoInst *call_target = NULL;
2565         int rgctx_reg = 0;
2566         gboolean need_unbox_trampoline;
2567
2568         if (!sig)
2569                 sig = mono_method_signature (method);
2570
2571         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2572                 g_assert_not_reached ();
2573
2574         if (rgctx_arg) {
2575                 rgctx_reg = mono_alloc_preg (cfg);
2576                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2577         }
2578
2579         if (method->string_ctor) {
2580                 /* Create the real signature */
2581                 /* FIXME: Cache these */
2582                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2583                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2584
2585                 sig = ctor_sig;
2586         }
2587
2588         context_used = mini_method_check_context_used (cfg, method);
2589
2590 #ifndef DISABLE_REMOTING
2591         might_be_remote = this_ins && sig->hasthis &&
2592                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2593                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2594
2595         if (might_be_remote && context_used) {
2596                 MonoInst *addr;
2597
2598                 g_assert (cfg->gshared);
2599
2600                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2601
2602                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2603         }
2604 #endif
2605
2606         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2607                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2608
2609         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2610
2611         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2612
2613 #ifndef DISABLE_REMOTING
2614         if (might_be_remote)
2615                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2616         else
2617 #endif
2618                 call->method = method;
2619         call->inst.flags |= MONO_INST_HAS_METHOD;
2620         call->inst.inst_left = this_ins;
2621         call->tail_call = tail;
2622
2623         if (virtual_) {
2624                 int vtable_reg, slot_reg, this_reg;
2625                 int offset;
2626
2627                 this_reg = this_ins->dreg;
2628
2629                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2630                         MonoInst *dummy_use;
2631
2632                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2633
2634                         /* Make a call to delegate->invoke_impl */
2635                         call->inst.inst_basereg = this_reg;
2636                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2637                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2638
2639                         /* We must emit a dummy use here because the delegate trampoline will
2640                         replace the 'this' argument with the delegate target making this activation
2641                         no longer a root for the delegate.
2642                         This is an issue for delegates that target collectible code such as dynamic
2643                         methods of GC'able assemblies.
2644
2645                         For a test case look into #667921.
2646
2647                         FIXME: a dummy use is not the best way to do it as the local register allocator
2648                         will put it on a caller save register and spil it around the call.
2649                         Ideally, we would either put it on a callee save register or only do the store part.
2650                          */
2651                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2652
2653                         return (MonoInst*)call;
2654                 }
2655
2656                 if ((!cfg->compile_aot || enable_for_aot) &&
2657                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2658                          (MONO_METHOD_IS_FINAL (method) &&
2659                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2660                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2661                         /*
2662                          * the method is not virtual, we just need to ensure this is not null
2663                          * and then we can call the method directly.
2664                          */
2665 #ifndef DISABLE_REMOTING
2666                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2667                                 /*
2668                                  * The check above ensures method is not gshared, this is needed since
2669                                  * gshared methods can't have wrappers.
2670                                  */
2671                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2672                         }
2673 #endif
2674
2675                         if (!method->string_ctor)
2676                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2677
2678                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2679                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2680                         /*
2681                          * the method is virtual, but we can statically dispatch since either
2682                          * it's class or the method itself are sealed.
2683                          * But first we need to ensure it's not a null reference.
2684                          */
2685                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2686
2687                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2688                 } else if (call_target) {
2689                         vtable_reg = alloc_preg (cfg);
2690                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2691
2692                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2693                         call->inst.sreg1 = call_target->dreg;
2694                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2695                 } else {
2696                         vtable_reg = alloc_preg (cfg);
2697                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2698                         if (mono_class_is_interface (method->klass)) {
2699                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2700                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2701                                 slot_reg = vtable_reg;
2702                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2703                         } else {
2704                                 slot_reg = vtable_reg;
2705                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2706                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2707                                 if (imt_arg) {
2708                                         g_assert (mono_method_signature (method)->generic_param_count);
2709                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2710                                 }
2711                         }
2712
2713                         call->inst.sreg1 = slot_reg;
2714                         call->inst.inst_offset = offset;
2715                         call->is_virtual = TRUE;
2716                 }
2717         }
2718
2719         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2720
2721         if (rgctx_arg)
2722                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2723
2724         return (MonoInst*)call;
2725 }
2726
2727 MonoInst*
2728 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2729 {
2730         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2731 }
2732
2733 MonoInst*
2734 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2735                                            MonoInst **args)
2736 {
2737         MonoCallInst *call;
2738
2739         g_assert (sig);
2740
2741         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2742         call->fptr = func;
2743
2744         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2745
2746         return (MonoInst*)call;
2747 }
2748
2749 MonoInst*
2750 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2751 {
2752         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2753
2754         g_assert (info);
2755
2756         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2757 }
2758
2759 /*
2760  * mono_emit_abs_call:
2761  *
2762  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2763  */
2764 inline static MonoInst*
2765 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2766                                         MonoMethodSignature *sig, MonoInst **args)
2767 {
2768         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2769         MonoInst *ins;
2770
2771         /*
2772          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2773          * handle it.
2774          */
2775         if (cfg->abs_patches == NULL)
2776                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2777         g_hash_table_insert (cfg->abs_patches, ji, ji);
2778         ins = mono_emit_native_call (cfg, ji, sig, args);
2779         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2780         return ins;
2781 }
2782
2783 static MonoMethodSignature*
2784 sig_to_rgctx_sig (MonoMethodSignature *sig)
2785 {
2786         // FIXME: memory allocation
2787         MonoMethodSignature *res;
2788         int i;
2789
2790         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2791         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2792         res->param_count = sig->param_count + 1;
2793         for (i = 0; i < sig->param_count; ++i)
2794                 res->params [i] = sig->params [i];
2795         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2796         return res;
2797 }
2798
2799 /* Make an indirect call to FSIG passing an additional argument */
2800 static MonoInst*
2801 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2802 {
2803         MonoMethodSignature *csig;
2804         MonoInst *args_buf [16];
2805         MonoInst **args;
2806         int i, pindex, tmp_reg;
2807
2808         /* Make a call with an rgctx/extra arg */
2809         if (fsig->param_count + 2 < 16)
2810                 args = args_buf;
2811         else
2812                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2813         pindex = 0;
2814         if (fsig->hasthis)
2815                 args [pindex ++] = orig_args [0];
2816         for (i = 0; i < fsig->param_count; ++i)
2817                 args [pindex ++] = orig_args [fsig->hasthis + i];
2818         tmp_reg = alloc_preg (cfg);
2819         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2820         csig = sig_to_rgctx_sig (fsig);
2821         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2822 }
2823
2824 /* Emit an indirect call to the function descriptor ADDR */
2825 static MonoInst*
2826 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2827 {
2828         int addr_reg, arg_reg;
2829         MonoInst *call_target;
2830
2831         g_assert (cfg->llvm_only);
2832
2833         /*
2834          * addr points to a <addr, arg> pair, load both of them, and
2835          * make a call to addr, passing arg as an extra arg.
2836          */
2837         addr_reg = alloc_preg (cfg);
2838         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2839         arg_reg = alloc_preg (cfg);
2840         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2841
2842         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2843 }
2844
2845 static gboolean
2846 direct_icalls_enabled (MonoCompile *cfg)
2847 {
2848         return FALSE;
2849
2850         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2851 #ifdef TARGET_AMD64
2852         if (cfg->compile_llvm && !cfg->llvm_only)
2853                 return FALSE;
2854 #endif
2855         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2856                 return FALSE;
2857         return TRUE;
2858 }
2859
2860 MonoInst*
2861 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2862 {
2863         /*
2864          * Call the jit icall without a wrapper if possible.
2865          * The wrapper is needed for the following reasons:
2866          * - to handle exceptions thrown using mono_raise_exceptions () from the
2867          *   icall function. The EH code needs the lmf frame pushed by the
2868          *   wrapper to be able to unwind back to managed code.
2869          * - to be able to do stack walks for asynchronously suspended
2870          *   threads when debugging.
2871          */
2872         if (info->no_raise && direct_icalls_enabled (cfg)) {
2873                 char *name;
2874                 int costs;
2875
2876                 if (!info->wrapper_method) {
2877                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2878                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2879                         g_free (name);
2880                         mono_memory_barrier ();
2881                 }
2882
2883                 /*
2884                  * Inline the wrapper method, which is basically a call to the C icall, and
2885                  * an exception check.
2886                  */
2887                 costs = inline_method (cfg, info->wrapper_method, NULL,
2888                                                            args, NULL, il_offset, TRUE);
2889                 g_assert (costs > 0);
2890                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2891
2892                 return args [0];
2893         } else {
2894                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2895         }
2896 }
2897
2898 static MonoInst*
2899 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2900 {
2901         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2902                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2903                         int widen_op = -1;
2904
2905                         /*
2906                          * Native code might return non register sized integers
2907                          * without initializing the upper bits.
2908                          */
2909                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2910                         case OP_LOADI1_MEMBASE:
2911                                 widen_op = OP_ICONV_TO_I1;
2912                                 break;
2913                         case OP_LOADU1_MEMBASE:
2914                                 widen_op = OP_ICONV_TO_U1;
2915                                 break;
2916                         case OP_LOADI2_MEMBASE:
2917                                 widen_op = OP_ICONV_TO_I2;
2918                                 break;
2919                         case OP_LOADU2_MEMBASE:
2920                                 widen_op = OP_ICONV_TO_U2;
2921                                 break;
2922                         default:
2923                                 break;
2924                         }
2925
2926                         if (widen_op != -1) {
2927                                 int dreg = alloc_preg (cfg);
2928                                 MonoInst *widen;
2929
2930                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2931                                 widen->type = ins->type;
2932                                 ins = widen;
2933                         }
2934                 }
2935         }
2936
2937         return ins;
2938 }
2939
2940
2941 static void
2942 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2943 {
2944         MonoInst *args [16];
2945
2946         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2947         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2948
2949         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2950 }
2951
2952 static MonoMethod*
2953 get_memcpy_method (void)
2954 {
2955         static MonoMethod *memcpy_method = NULL;
2956         if (!memcpy_method) {
2957                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2958                 if (!memcpy_method)
2959                         g_error ("Old corlib found. Install a new one");
2960         }
2961         return memcpy_method;
2962 }
2963
2964 static void
2965 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2966 {
2967         MonoClassField *field;
2968         gpointer iter = NULL;
2969
2970         while ((field = mono_class_get_fields (klass, &iter))) {
2971                 int foffset;
2972
2973                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2974                         continue;
2975                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2976                 if (mini_type_is_reference (mono_field_get_type (field))) {
2977                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2978                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2979                 } else {
2980                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2981                         if (field_class->has_references)
2982                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2983                 }
2984         }
2985 }
2986
2987 static void
2988 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2989 {
2990         int card_table_shift_bits;
2991         gpointer card_table_mask;
2992         guint8 *card_table;
2993         MonoInst *dummy_use;
2994         int nursery_shift_bits;
2995         size_t nursery_size;
2996
2997         if (!cfg->gen_write_barriers)
2998                 return;
2999
3000         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3001
3002         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3003
3004         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3005                 MonoInst *wbarrier;
3006
3007                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3008                 wbarrier->sreg1 = ptr->dreg;
3009                 wbarrier->sreg2 = value->dreg;
3010                 MONO_ADD_INS (cfg->cbb, wbarrier);
3011         } else if (card_table) {
3012                 int offset_reg = alloc_preg (cfg);
3013                 int card_reg;
3014                 MonoInst *ins;
3015
3016                 /*
3017                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
3018                  * collector case, so, for the serial collector, it might slightly slow down nursery
3019                  * collections. We also expect that the host system and the target system have the same card
3020                  * table configuration, which is the case if they have the same pointer size.
3021                  */
3022
3023                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3024                 if (card_table_mask)
3025                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3026
3027                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3028                  * IMM's larger than 32bits.
3029                  */
3030                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3031                 card_reg = ins->dreg;
3032
3033                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3034                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3035         } else {
3036                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3037                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3038         }
3039
3040         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3041 }
3042
3043 static gboolean
3044 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3045 {
3046         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3047         unsigned need_wb = 0;
3048
3049         if (align == 0)
3050                 align = 4;
3051
3052         /*types with references can't have alignment smaller than sizeof(void*) */
3053         if (align < SIZEOF_VOID_P)
3054                 return FALSE;
3055
3056         if (size > 5 * SIZEOF_VOID_P)
3057                 return FALSE;
3058
3059         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3060
3061         destreg = iargs [0]->dreg;
3062         srcreg = iargs [1]->dreg;
3063         offset = 0;
3064
3065         dest_ptr_reg = alloc_preg (cfg);
3066         tmp_reg = alloc_preg (cfg);
3067
3068         /*tmp = dreg*/
3069         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3070
3071         while (size >= SIZEOF_VOID_P) {
3072                 MonoInst *load_inst;
3073                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3074                 load_inst->dreg = tmp_reg;
3075                 load_inst->inst_basereg = srcreg;
3076                 load_inst->inst_offset = offset;
3077                 MONO_ADD_INS (cfg->cbb, load_inst);
3078
3079                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3080
3081                 if (need_wb & 0x1)
3082                         emit_write_barrier (cfg, iargs [0], load_inst);
3083
3084                 offset += SIZEOF_VOID_P;
3085                 size -= SIZEOF_VOID_P;
3086                 need_wb >>= 1;
3087
3088                 /*tmp += sizeof (void*)*/
3089                 if (size >= SIZEOF_VOID_P) {
3090                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3091                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3092                 }
3093         }
3094
3095         /* Those cannot be references since size < sizeof (void*) */
3096         while (size >= 4) {
3097                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3098                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3099                 offset += 4;
3100                 size -= 4;
3101         }
3102
3103         while (size >= 2) {
3104                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3105                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3106                 offset += 2;
3107                 size -= 2;
3108         }
3109
3110         while (size >= 1) {
3111                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3112                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3113                 offset += 1;
3114                 size -= 1;
3115         }
3116
3117         return TRUE;
3118 }
3119
3120 /*
3121  * Emit code to copy a valuetype of type @klass whose address is stored in
3122  * @src->dreg to memory whose address is stored at @dest->dreg.
3123  */
3124 void
3125 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3126 {
3127         MonoInst *iargs [4];
3128         int n;
3129         guint32 align = 0;
3130         MonoMethod *memcpy_method;
3131         MonoInst *size_ins = NULL;
3132         MonoInst *memcpy_ins = NULL;
3133
3134         g_assert (klass);
3135         if (cfg->gshared)
3136                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3137
3138         /*
3139          * This check breaks with spilled vars... need to handle it during verification anyway.
3140          * g_assert (klass && klass == src->klass && klass == dest->klass);
3141          */
3142
3143         if (mini_is_gsharedvt_klass (klass)) {
3144                 g_assert (!native);
3145                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3146                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3147         }
3148
3149         if (native)
3150                 n = mono_class_native_size (klass, &align);
3151         else
3152                 n = mono_class_value_size (klass, &align);
3153
3154         if (!align)
3155                 align = SIZEOF_VOID_P;
3156         /* if native is true there should be no references in the struct */
3157         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3158                 /* Avoid barriers when storing to the stack */
3159                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3160                           (dest->opcode == OP_LDADDR))) {
3161                         int context_used;
3162
3163                         iargs [0] = dest;
3164                         iargs [1] = src;
3165
3166                         context_used = mini_class_check_context_used (cfg, klass);
3167
3168                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3169                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3170                                 return;
3171                         } else if (size_ins || align < SIZEOF_VOID_P) {
3172                                 if (context_used) {
3173                                         iargs [2] = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3174                                 }  else {
3175                                         iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3176                                         if (!cfg->compile_aot)
3177                                                 mono_class_compute_gc_descriptor (klass);
3178                                 }
3179                                 if (size_ins)
3180                                         mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3181                                 else
3182                                         mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3183                         } else {
3184                                 /* We don't unroll more than 5 stores to avoid code bloat. */
3185                                 /*This is harmless and simplify mono_gc_get_range_copy_func */
3186                                 n += (SIZEOF_VOID_P - 1);
3187                                 n &= ~(SIZEOF_VOID_P - 1);
3188
3189                                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3190                                 mono_emit_jit_icall (cfg, mono_gc_get_range_copy_func (), iargs);
3191                         }
3192                 }
3193         }
3194
3195         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3196                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3197                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3198         } else {
3199                 iargs [0] = dest;
3200                 iargs [1] = src;
3201                 if (size_ins)
3202                         iargs [2] = size_ins;
3203                 else
3204                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3205
3206                 memcpy_method = get_memcpy_method ();
3207                 if (memcpy_ins)
3208                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3209                 else
3210                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3211         }
3212 }
3213
3214 static MonoMethod*
3215 get_memset_method (void)
3216 {
3217         static MonoMethod *memset_method = NULL;
3218         if (!memset_method) {
3219                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3220                 if (!memset_method)
3221                         g_error ("Old corlib found. Install a new one");
3222         }
3223         return memset_method;
3224 }
3225
3226 void
3227 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3228 {
3229         MonoInst *iargs [3];
3230         int n;
3231         guint32 align;
3232         MonoMethod *memset_method;
3233         MonoInst *size_ins = NULL;
3234         MonoInst *bzero_ins = NULL;
3235         static MonoMethod *bzero_method;
3236
3237         /* FIXME: Optimize this for the case when dest is an LDADDR */
3238         mono_class_init (klass);
3239         if (mini_is_gsharedvt_klass (klass)) {
3240                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3241                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3242                 if (!bzero_method)
3243                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3244                 g_assert (bzero_method);
3245                 iargs [0] = dest;
3246                 iargs [1] = size_ins;
3247                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3248                 return;
3249         }
3250
3251         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3252
3253         n = mono_class_value_size (klass, &align);
3254
3255         if (n <= sizeof (gpointer) * 8) {
3256                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3257         }
3258         else {
3259                 memset_method = get_memset_method ();
3260                 iargs [0] = dest;
3261                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3262                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3263                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3264         }
3265 }
3266
3267 /*
3268  * emit_get_rgctx:
3269  *
3270  *   Emit IR to return either the this pointer for instance method,
3271  * or the mrgctx for static methods.
3272  */
3273 static MonoInst*
3274 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3275 {
3276         MonoInst *this_ins = NULL;
3277
3278         g_assert (cfg->gshared);
3279
3280         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3281                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3282                 !method->klass->valuetype)
3283                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
3284
3285         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3286                 MonoInst *mrgctx_loc, *mrgctx_var;
3287
3288                 g_assert (!this_ins);
3289                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3290
3291                 mrgctx_loc = mono_get_vtable_var (cfg);
3292                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3293
3294                 return mrgctx_var;
3295         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
3296                 MonoInst *mrgctx_loc, *mrgctx_var;
3297
3298                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
3299                 mrgctx_loc = mono_get_vtable_var (cfg);
3300                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3301
3302                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
3303
3304                 return mrgctx_var;
3305         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3306                 MonoInst *vtable_loc, *vtable_var;
3307
3308                 g_assert (!this_ins);
3309
3310                 vtable_loc = mono_get_vtable_var (cfg);
3311                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3312
3313                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3314                         MonoInst *mrgctx_var = vtable_var;
3315                         int vtable_reg;
3316
3317                         vtable_reg = alloc_preg (cfg);
3318                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3319                         vtable_var->type = STACK_PTR;
3320                 }
3321
3322                 return vtable_var;
3323         } else {
3324                 MonoInst *ins;
3325                 int vtable_reg;
3326
3327                 vtable_reg = alloc_preg (cfg);
3328                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3329                 return ins;
3330         }
3331 }
3332
3333 static MonoJumpInfoRgctxEntry *
3334 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3335 {
3336         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3337         res->method = method;
3338         res->in_mrgctx = in_mrgctx;
3339         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3340         res->data->type = patch_type;
3341         res->data->data.target = patch_data;
3342         res->info_type = info_type;
3343
3344         return res;
3345 }
3346
3347 static inline MonoInst*
3348 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3349 {
3350         MonoInst *args [16];
3351         MonoInst *call;
3352
3353         // FIXME: No fastpath since the slot is not a compile time constant
3354         args [0] = rgctx;
3355         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3356         if (entry->in_mrgctx)
3357                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3358         else
3359                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3360         return call;
3361 #if 0
3362         /*
3363          * FIXME: This can be called during decompose, which is a problem since it creates
3364          * new bblocks.
3365          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3366          */
3367         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3368         gboolean mrgctx;
3369         MonoBasicBlock *is_null_bb, *end_bb;
3370         MonoInst *res, *ins, *call;
3371         MonoInst *args[16];
3372
3373         slot = mini_get_rgctx_entry_slot (entry);
3374
3375         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3376         index = MONO_RGCTX_SLOT_INDEX (slot);
3377         if (mrgctx)
3378                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3379         for (depth = 0; ; ++depth) {
3380                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3381
3382                 if (index < size - 1)
3383                         break;
3384                 index -= size - 1;
3385         }
3386
3387         NEW_BBLOCK (cfg, end_bb);
3388         NEW_BBLOCK (cfg, is_null_bb);
3389
3390         if (mrgctx) {
3391                 rgctx_reg = rgctx->dreg;
3392         } else {
3393                 rgctx_reg = alloc_preg (cfg);
3394
3395                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3396                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3397                 NEW_BBLOCK (cfg, is_null_bb);
3398
3399                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3400                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3401         }
3402
3403         for (i = 0; i < depth; ++i) {
3404                 int array_reg = alloc_preg (cfg);
3405
3406                 /* load ptr to next array */
3407                 if (mrgctx && i == 0)
3408                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3409                 else
3410                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3411                 rgctx_reg = array_reg;
3412                 /* is the ptr null? */
3413                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3414                 /* if yes, jump to actual trampoline */
3415                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3416         }
3417
3418         /* fetch slot */
3419         val_reg = alloc_preg (cfg);
3420         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3421         /* is the slot null? */
3422         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3423         /* if yes, jump to actual trampoline */
3424         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3425
3426         /* Fastpath */
3427         res_reg = alloc_preg (cfg);
3428         MONO_INST_NEW (cfg, ins, OP_MOVE);
3429         ins->dreg = res_reg;
3430         ins->sreg1 = val_reg;
3431         MONO_ADD_INS (cfg->cbb, ins);
3432         res = ins;
3433         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3434
3435         /* Slowpath */
3436         MONO_START_BB (cfg, is_null_bb);
3437         args [0] = rgctx;
3438         EMIT_NEW_ICONST (cfg, args [1], index);
3439         if (mrgctx)
3440                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3441         else
3442                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3443         MONO_INST_NEW (cfg, ins, OP_MOVE);
3444         ins->dreg = res_reg;
3445         ins->sreg1 = call->dreg;
3446         MONO_ADD_INS (cfg->cbb, ins);
3447         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3448
3449         MONO_START_BB (cfg, end_bb);
3450
3451         return res;
3452 #endif
3453 }
3454
3455 /*
3456  * emit_rgctx_fetch:
3457  *
3458  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3459  * given by RGCTX.
3460  */
3461 static inline MonoInst*
3462 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3463 {
3464         if (cfg->llvm_only)
3465                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3466         else
3467                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3468 }
3469
3470 MonoInst*
3471 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3472                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3473 {
3474         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);
3475         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3476
3477         return emit_rgctx_fetch (cfg, rgctx, entry);
3478 }
3479
3480 static MonoInst*
3481 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3482                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3483 {
3484         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);
3485         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3486
3487         return emit_rgctx_fetch (cfg, rgctx, entry);
3488 }
3489
3490 static MonoInst*
3491 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3492                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3493 {
3494         MonoJumpInfoGSharedVtCall *call_info;
3495         MonoJumpInfoRgctxEntry *entry;
3496         MonoInst *rgctx;
3497
3498         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3499         call_info->sig = sig;
3500         call_info->method = cmethod;
3501
3502         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);
3503         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3504
3505         return emit_rgctx_fetch (cfg, rgctx, entry);
3506 }
3507
3508 /*
3509  * emit_get_rgctx_virt_method:
3510  *
3511  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3512  */
3513 static MonoInst*
3514 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3515                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3516 {
3517         MonoJumpInfoVirtMethod *info;
3518         MonoJumpInfoRgctxEntry *entry;
3519         MonoInst *rgctx;
3520
3521         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3522         info->klass = klass;
3523         info->method = virt_method;
3524
3525         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);
3526         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3527
3528         return emit_rgctx_fetch (cfg, rgctx, entry);
3529 }
3530
3531 static MonoInst*
3532 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3533                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3534 {
3535         MonoJumpInfoRgctxEntry *entry;
3536         MonoInst *rgctx;
3537
3538         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);
3539         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3540
3541         return emit_rgctx_fetch (cfg, rgctx, entry);
3542 }
3543
3544 /*
3545  * emit_get_rgctx_method:
3546  *
3547  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3548  * normal constants, else emit a load from the rgctx.
3549  */
3550 static MonoInst*
3551 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3552                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3553 {
3554         if (!context_used) {
3555                 MonoInst *ins;
3556
3557                 switch (rgctx_type) {
3558                 case MONO_RGCTX_INFO_METHOD:
3559                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3560                         return ins;
3561                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3562                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3563                         return ins;
3564                 default:
3565                         g_assert_not_reached ();
3566                 }
3567         } else {
3568                 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);
3569                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3570
3571                 return emit_rgctx_fetch (cfg, rgctx, entry);
3572         }
3573 }
3574
3575 static MonoInst*
3576 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3577                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3578 {
3579         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);
3580         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3581
3582         return emit_rgctx_fetch (cfg, rgctx, entry);
3583 }
3584
3585 static int
3586 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3587 {
3588         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3589         MonoRuntimeGenericContextInfoTemplate *template_;
3590         int i, idx;
3591
3592         g_assert (info);
3593
3594         for (i = 0; i < info->num_entries; ++i) {
3595                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3596
3597                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3598                         return i;
3599         }
3600
3601         if (info->num_entries == info->count_entries) {
3602                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3603                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3604
3605                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3606
3607                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3608                 info->entries = new_entries;
3609                 info->count_entries = new_count_entries;
3610         }
3611
3612         idx = info->num_entries;
3613         template_ = &info->entries [idx];
3614         template_->info_type = rgctx_type;
3615         template_->data = data;
3616
3617         info->num_entries ++;
3618
3619         return idx;
3620 }
3621
3622 /*
3623  * emit_get_gsharedvt_info:
3624  *
3625  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3626  */
3627 static MonoInst*
3628 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3629 {
3630         MonoInst *ins;
3631         int idx, dreg;
3632
3633         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3634         /* Load info->entries [idx] */
3635         dreg = alloc_preg (cfg);
3636         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3637
3638         return ins;
3639 }
3640
3641 static MonoInst*
3642 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3643 {
3644         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3645 }
3646
3647 /*
3648  * On return the caller must check @klass for load errors.
3649  */
3650 static void
3651 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3652 {
3653         MonoInst *vtable_arg;
3654         int context_used;
3655
3656         context_used = mini_class_check_context_used (cfg, klass);
3657
3658         if (context_used) {
3659                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3660                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3661         } else {
3662                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3663
3664                 if (!vtable)
3665                         return;
3666                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3667         }
3668
3669         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3670                 MonoInst *ins;
3671
3672                 /*
3673                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3674                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3675                  */
3676                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3677                 ins->sreg1 = vtable_arg->dreg;
3678                 MONO_ADD_INS (cfg->cbb, ins);
3679         } else {
3680                 int inited_reg;
3681                 MonoBasicBlock *inited_bb;
3682                 MonoInst *args [16];
3683
3684                 inited_reg = alloc_ireg (cfg);
3685
3686                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3687
3688                 NEW_BBLOCK (cfg, inited_bb);
3689
3690                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3691                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3692
3693                 args [0] = vtable_arg;
3694                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3695
3696                 MONO_START_BB (cfg, inited_bb);
3697         }
3698 }
3699
3700 static void
3701 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3702 {
3703         MonoInst *ins;
3704
3705         if (cfg->gen_seq_points && cfg->method == method) {
3706                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3707                 if (nonempty_stack)
3708                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3709                 MONO_ADD_INS (cfg->cbb, ins);
3710         }
3711 }
3712
3713 void
3714 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3715 {
3716         if (mini_get_debug_options ()->better_cast_details) {
3717                 int vtable_reg = alloc_preg (cfg);
3718                 int klass_reg = alloc_preg (cfg);
3719                 MonoBasicBlock *is_null_bb = NULL;
3720                 MonoInst *tls_get;
3721                 int to_klass_reg, context_used;
3722
3723                 if (null_check) {
3724                         NEW_BBLOCK (cfg, is_null_bb);
3725
3726                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3727                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3728                 }
3729
3730                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3731                 if (!tls_get) {
3732                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3733                         exit (1);
3734                 }
3735
3736                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3737                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3738
3739                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3740
3741                 context_used = mini_class_check_context_used (cfg, klass);
3742                 if (context_used) {
3743                         MonoInst *class_ins;
3744
3745                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3746                         to_klass_reg = class_ins->dreg;
3747                 } else {
3748                         to_klass_reg = alloc_preg (cfg);
3749                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3750                 }
3751                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3752
3753                 if (null_check)
3754                         MONO_START_BB (cfg, is_null_bb);
3755         }
3756 }
3757
3758 void
3759 mini_reset_cast_details (MonoCompile *cfg)
3760 {
3761         /* Reset the variables holding the cast details */
3762         if (mini_get_debug_options ()->better_cast_details) {
3763                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3764                 /* It is enough to reset the from field */
3765                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3766         }
3767 }
3768
3769 /*
3770  * On return the caller must check @array_class for load errors
3771  */
3772 static void
3773 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3774 {
3775         int vtable_reg = alloc_preg (cfg);
3776         int context_used;
3777
3778         context_used = mini_class_check_context_used (cfg, array_class);
3779
3780         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3781
3782         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3783
3784         if (cfg->opt & MONO_OPT_SHARED) {
3785                 int class_reg = alloc_preg (cfg);
3786                 MonoInst *ins;
3787
3788                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3789                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3790                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3791         } else if (context_used) {
3792                 MonoInst *vtable_ins;
3793
3794                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3795                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3796         } else {
3797                 if (cfg->compile_aot) {
3798                         int vt_reg;
3799                         MonoVTable *vtable;
3800
3801                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3802                                 return;
3803                         vt_reg = alloc_preg (cfg);
3804                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3805                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3806                 } else {
3807                         MonoVTable *vtable;
3808                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3809                                 return;
3810                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3811                 }
3812         }
3813
3814         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3815
3816         mini_reset_cast_details (cfg);
3817 }
3818
3819 /**
3820  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3821  * generic code is generated.
3822  */
3823 static MonoInst*
3824 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3825 {
3826         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3827
3828         if (context_used) {
3829                 MonoInst *rgctx, *addr;
3830
3831                 /* FIXME: What if the class is shared?  We might not
3832                    have to get the address of the method from the
3833                    RGCTX. */
3834                 addr = emit_get_rgctx_method (cfg, context_used, method,
3835                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3836                 if (cfg->llvm_only) {
3837                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3838                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3839                 } else {
3840                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3841
3842                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3843                 }
3844         } else {
3845                 gboolean pass_vtable, pass_mrgctx;
3846                 MonoInst *rgctx_arg = NULL;
3847
3848                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3849                 g_assert (!pass_mrgctx);
3850
3851                 if (pass_vtable) {
3852                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3853
3854                         g_assert (vtable);
3855                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3856                 }
3857
3858                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3859         }
3860 }
3861
3862 static MonoInst*
3863 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3864 {
3865         MonoInst *add;
3866         int obj_reg;
3867         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3868         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3869         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3870         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3871
3872         obj_reg = sp [0]->dreg;
3873         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3874         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3875
3876         /* FIXME: generics */
3877         g_assert (klass->rank == 0);
3878
3879         // Check rank == 0
3880         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3881         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3882
3883         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3884         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3885
3886         if (context_used) {
3887                 MonoInst *element_class;
3888
3889                 /* This assertion is from the unboxcast insn */
3890                 g_assert (klass->rank == 0);
3891
3892                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3893                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3894
3895                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3896                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3897         } else {
3898                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3899                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3900                 mini_reset_cast_details (cfg);
3901         }
3902
3903         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3904         MONO_ADD_INS (cfg->cbb, add);
3905         add->type = STACK_MP;
3906         add->klass = klass;
3907
3908         return add;
3909 }
3910
3911 static MonoInst*
3912 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3913 {
3914         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3915         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3916         MonoInst *ins;
3917         int dreg, addr_reg;
3918
3919         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3920
3921         /* obj */
3922         args [0] = obj;
3923
3924         /* klass */
3925         args [1] = klass_inst;
3926
3927         /* CASTCLASS */
3928         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3929
3930         NEW_BBLOCK (cfg, is_ref_bb);
3931         NEW_BBLOCK (cfg, is_nullable_bb);
3932         NEW_BBLOCK (cfg, end_bb);
3933         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3934         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3935         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3936
3937         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3938         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3939
3940         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3941         addr_reg = alloc_dreg (cfg, STACK_MP);
3942
3943         /* Non-ref case */
3944         /* UNBOX */
3945         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3946         MONO_ADD_INS (cfg->cbb, addr);
3947
3948         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3949
3950         /* Ref case */
3951         MONO_START_BB (cfg, is_ref_bb);
3952
3953         /* Save the ref to a temporary */
3954         dreg = alloc_ireg (cfg);
3955         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3956         addr->dreg = addr_reg;
3957         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3958         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3959
3960         /* Nullable case */
3961         MONO_START_BB (cfg, is_nullable_bb);
3962
3963         {
3964                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3965                 MonoInst *unbox_call;
3966                 MonoMethodSignature *unbox_sig;
3967
3968                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3969                 unbox_sig->ret = &klass->byval_arg;
3970                 unbox_sig->param_count = 1;
3971                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3972
3973                 if (cfg->llvm_only)
3974                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3975                 else
3976                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3977
3978                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3979                 addr->dreg = addr_reg;
3980         }
3981
3982         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3983
3984         /* End */
3985         MONO_START_BB (cfg, end_bb);
3986
3987         /* LDOBJ */
3988         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3989
3990         return ins;
3991 }
3992
3993 /*
3994  * Returns NULL and set the cfg exception on error.
3995  */
3996 static MonoInst*
3997 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3998 {
3999         MonoInst *iargs [2];
4000         void *alloc_ftn;
4001
4002         if (context_used) {
4003                 MonoInst *data;
4004                 MonoRgctxInfoType rgctx_info;
4005                 MonoInst *iargs [2];
4006                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4007
4008                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4009
4010                 if (cfg->opt & MONO_OPT_SHARED)
4011                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4012                 else
4013                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4014                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4015
4016                 if (cfg->opt & MONO_OPT_SHARED) {
4017                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4018                         iargs [1] = data;
4019                         alloc_ftn = ves_icall_object_new;
4020                 } else {
4021                         iargs [0] = data;
4022                         alloc_ftn = ves_icall_object_new_specific;
4023                 }
4024
4025                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4026                         if (known_instance_size) {
4027                                 int size = mono_class_instance_size (klass);
4028                                 if (size < sizeof (MonoObject))
4029                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4030
4031                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4032                         }
4033                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4034                 }
4035
4036                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4037         }
4038
4039         if (cfg->opt & MONO_OPT_SHARED) {
4040                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4041                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4042
4043                 alloc_ftn = ves_icall_object_new;
4044         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
4045                 /* This happens often in argument checking code, eg. throw new FooException... */
4046                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4047                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4048                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4049         } else {
4050                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4051                 MonoMethod *managed_alloc = NULL;
4052                 gboolean pass_lw;
4053
4054                 if (!vtable) {
4055                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4056                         cfg->exception_ptr = klass;
4057                         return NULL;
4058                 }
4059
4060                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4061
4062                 if (managed_alloc) {
4063                         int size = mono_class_instance_size (klass);
4064                         if (size < sizeof (MonoObject))
4065                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4066
4067                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4068                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4069                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4070                 }
4071                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4072                 if (pass_lw) {
4073                         guint32 lw = vtable->klass->instance_size;
4074                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4075                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4076                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4077                 }
4078                 else {
4079                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4080                 }
4081         }
4082
4083         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4084 }
4085
4086 /*
4087  * Returns NULL and set the cfg exception on error.
4088  */
4089 static MonoInst*
4090 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4091 {
4092         MonoInst *alloc, *ins;
4093
4094         if (mono_class_is_nullable (klass)) {
4095                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4096
4097                 if (context_used) {
4098                         if (cfg->llvm_only && cfg->gsharedvt) {
4099                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4100                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4101                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4102                         } else {
4103                                 /* FIXME: What if the class is shared?  We might not
4104                                    have to get the method address from the RGCTX. */
4105                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4106                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4107                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
4108
4109                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4110                         }
4111                 } else {
4112                         gboolean pass_vtable, pass_mrgctx;
4113                         MonoInst *rgctx_arg = NULL;
4114
4115                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4116                         g_assert (!pass_mrgctx);
4117
4118                         if (pass_vtable) {
4119                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4120
4121                                 g_assert (vtable);
4122                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4123                         }
4124
4125                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4126                 }
4127         }
4128
4129         if (mini_is_gsharedvt_klass (klass)) {
4130                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4131                 MonoInst *res, *is_ref, *src_var, *addr;
4132                 int dreg;
4133
4134                 dreg = alloc_ireg (cfg);
4135
4136                 NEW_BBLOCK (cfg, is_ref_bb);
4137                 NEW_BBLOCK (cfg, is_nullable_bb);
4138                 NEW_BBLOCK (cfg, end_bb);
4139                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4140                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4141                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4142
4143                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4144                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4145
4146                 /* Non-ref case */
4147                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4148                 if (!alloc)
4149                         return NULL;
4150                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4151                 ins->opcode = OP_STOREV_MEMBASE;
4152
4153                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4154                 res->type = STACK_OBJ;
4155                 res->klass = klass;
4156                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4157
4158                 /* Ref case */
4159                 MONO_START_BB (cfg, is_ref_bb);
4160
4161                 /* val is a vtype, so has to load the value manually */
4162                 src_var = get_vreg_to_inst (cfg, val->dreg);
4163                 if (!src_var)
4164                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4165                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4166                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4167                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4168
4169                 /* Nullable case */
4170                 MONO_START_BB (cfg, is_nullable_bb);
4171
4172                 {
4173                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4174                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4175                         MonoInst *box_call;
4176                         MonoMethodSignature *box_sig;
4177
4178                         /*
4179                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4180                          * construct that method at JIT time, so have to do things by hand.
4181                          */
4182                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4183                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4184                         box_sig->param_count = 1;
4185                         box_sig->params [0] = &klass->byval_arg;
4186
4187                         if (cfg->llvm_only)
4188                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4189                         else
4190                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4191                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4192                         res->type = STACK_OBJ;
4193                         res->klass = klass;
4194                 }
4195
4196                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4197
4198                 MONO_START_BB (cfg, end_bb);
4199
4200                 return res;
4201         } else {
4202                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4203                 if (!alloc)
4204                         return NULL;
4205
4206                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4207                 return alloc;
4208         }
4209 }
4210
4211 static GHashTable* direct_icall_type_hash;
4212
4213 static gboolean
4214 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4215 {
4216         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4217         if (!direct_icalls_enabled (cfg))
4218                 return FALSE;
4219
4220         /*
4221          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4222          * Whitelist a few icalls for now.
4223          */
4224         if (!direct_icall_type_hash) {
4225                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4226
4227                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4228                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4229                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4230                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4231                 mono_memory_barrier ();
4232                 direct_icall_type_hash = h;
4233         }
4234
4235         if (cmethod->klass == mono_defaults.math_class)
4236                 return TRUE;
4237         /* No locking needed */
4238         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4239                 return TRUE;
4240         return FALSE;
4241 }
4242
4243 static gboolean
4244 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
4245 {
4246         if (cmethod->klass == mono_defaults.systemtype_class) {
4247                 if (!strcmp (cmethod->name, "GetType"))
4248                         return TRUE;
4249         }
4250         return FALSE;
4251 }
4252
4253 static G_GNUC_UNUSED MonoInst*
4254 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4255 {
4256         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4257         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4258         gboolean is_i4;
4259
4260         switch (enum_type->type) {
4261         case MONO_TYPE_I8:
4262         case MONO_TYPE_U8:
4263 #if SIZEOF_REGISTER == 8
4264         case MONO_TYPE_I:
4265         case MONO_TYPE_U:
4266 #endif
4267                 is_i4 = FALSE;
4268                 break;
4269         default:
4270                 is_i4 = TRUE;
4271                 break;
4272         }
4273
4274         {
4275                 MonoInst *load, *and_, *cmp, *ceq;
4276                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4277                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4278                 int dest_reg = alloc_ireg (cfg);
4279
4280                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4281                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4282                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4283                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4284
4285                 ceq->type = STACK_I4;
4286
4287                 if (!is_i4) {
4288                         load = mono_decompose_opcode (cfg, load);
4289                         and_ = mono_decompose_opcode (cfg, and_);
4290                         cmp = mono_decompose_opcode (cfg, cmp);
4291                         ceq = mono_decompose_opcode (cfg, ceq);
4292                 }
4293
4294                 return ceq;
4295         }
4296 }
4297
4298 /*
4299  * Returns NULL and set the cfg exception on error.
4300  */
4301 static G_GNUC_UNUSED MonoInst*
4302 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
4303 {
4304         MonoInst *ptr;
4305         int dreg;
4306         gpointer trampoline;
4307         MonoInst *obj, *method_ins, *tramp_ins;
4308         MonoDomain *domain;
4309         guint8 **code_slot;
4310
4311         if (virtual_ && !cfg->llvm_only) {
4312                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4313                 g_assert (invoke);
4314
4315                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4316                         return NULL;
4317         }
4318
4319         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
4320         if (!obj)
4321                 return NULL;
4322
4323         /* Inline the contents of mono_delegate_ctor */
4324
4325         /* Set target field */
4326         /* Optimize away setting of NULL target */
4327         if (!MONO_INS_IS_PCONST_NULL (target)) {
4328                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4329                 if (cfg->gen_write_barriers) {
4330                         dreg = alloc_preg (cfg);
4331                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4332                         emit_write_barrier (cfg, ptr, target);
4333                 }
4334         }
4335
4336         /* Set method field */
4337         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4338         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4339
4340         /*
4341          * To avoid looking up the compiled code belonging to the target method
4342          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4343          * store it, and we fill it after the method has been compiled.
4344          */
4345         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4346                 MonoInst *code_slot_ins;
4347
4348                 if (context_used) {
4349                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4350                 } else {
4351                         domain = mono_domain_get ();
4352                         mono_domain_lock (domain);
4353                         if (!domain_jit_info (domain)->method_code_hash)
4354                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4355                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4356                         if (!code_slot) {
4357                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4358                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4359                         }
4360                         mono_domain_unlock (domain);
4361
4362                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4363                 }
4364                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4365         }
4366
4367         if (cfg->llvm_only) {
4368                 MonoInst *args [16];
4369
4370                 if (virtual_) {
4371                         args [0] = obj;
4372                         args [1] = target;
4373                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4374                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4375                 } else {
4376                         args [0] = obj;
4377                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4378                 }
4379
4380                 return obj;
4381         }
4382
4383         if (cfg->compile_aot) {
4384                 MonoDelegateClassMethodPair *del_tramp;
4385
4386                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4387                 del_tramp->klass = klass;
4388                 del_tramp->method = context_used ? NULL : method;
4389                 del_tramp->is_virtual = virtual_;
4390                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4391         } else {
4392                 if (virtual_)
4393                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4394                 else
4395                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4396                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4397         }
4398
4399         /* Set invoke_impl field */
4400         if (virtual_) {
4401                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4402         } else {
4403                 dreg = alloc_preg (cfg);
4404                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4405                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4406
4407                 dreg = alloc_preg (cfg);
4408                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4409                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4410         }
4411
4412         dreg = alloc_preg (cfg);
4413         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4414         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4415
4416         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4417
4418         return obj;
4419 }
4420
4421 static MonoInst*
4422 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4423 {
4424         MonoJitICallInfo *info;
4425
4426         /* Need to register the icall so it gets an icall wrapper */
4427         info = mono_get_array_new_va_icall (rank);
4428
4429         cfg->flags |= MONO_CFG_HAS_VARARGS;
4430
4431         /* mono_array_new_va () needs a vararg calling convention */
4432         cfg->exception_message = g_strdup ("array-new");
4433         cfg->disable_llvm = TRUE;
4434
4435         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4436         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4437 }
4438
4439 /*
4440  * handle_constrained_gsharedvt_call:
4441  *
4442  *   Handle constrained calls where the receiver is a gsharedvt type.
4443  * Return the instruction representing the call. Set the cfg exception on failure.
4444  */
4445 static MonoInst*
4446 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4447                                                                    gboolean *ref_emit_widen)
4448 {
4449         MonoInst *ins = NULL;
4450         gboolean emit_widen = *ref_emit_widen;
4451
4452         /*
4453          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4454          * 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
4455          * pack the arguments into an array, and do the rest of the work in in an icall.
4456          */
4457         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4458                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4459                 (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]))))) {
4460                 MonoInst *args [16];
4461
4462                 /*
4463                  * This case handles calls to
4464                  * - object:ToString()/Equals()/GetHashCode(),
4465                  * - System.IComparable<T>:CompareTo()
4466                  * - System.IEquatable<T>:Equals ()
4467                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4468                  */
4469
4470                 args [0] = sp [0];
4471                 if (mono_method_check_context_used (cmethod))
4472                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4473                 else
4474                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4475                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4476
4477                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4478                 if (fsig->hasthis && fsig->param_count) {
4479                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4480                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4481                         ins->dreg = alloc_preg (cfg);
4482                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4483                         MONO_ADD_INS (cfg->cbb, ins);
4484                         args [4] = ins;
4485
4486                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4487                                 int addr_reg, deref_arg_reg;
4488
4489                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4490                                 deref_arg_reg = alloc_preg (cfg);
4491                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4492                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4493
4494                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4495                                 addr_reg = ins->dreg;
4496                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4497                         } else {
4498                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4499                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4500                         }
4501                 } else {
4502                         EMIT_NEW_ICONST (cfg, args [3], 0);
4503                         EMIT_NEW_ICONST (cfg, args [4], 0);
4504                 }
4505                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4506                 emit_widen = FALSE;
4507
4508                 if (mini_is_gsharedvt_type (fsig->ret)) {
4509                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4510                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4511                         MonoInst *add;
4512
4513                         /* Unbox */
4514                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4515                         MONO_ADD_INS (cfg->cbb, add);
4516                         /* Load value */
4517                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4518                         MONO_ADD_INS (cfg->cbb, ins);
4519                         /* ins represents the call result */
4520                 }
4521         } else {
4522                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4523         }
4524
4525         *ref_emit_widen = emit_widen;
4526
4527         return ins;
4528
4529  exception_exit:
4530         return NULL;
4531 }
4532
4533 static void
4534 mono_emit_load_got_addr (MonoCompile *cfg)
4535 {
4536         MonoInst *getaddr, *dummy_use;
4537
4538         if (!cfg->got_var || cfg->got_var_allocated)
4539                 return;
4540
4541         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4542         getaddr->cil_code = cfg->header->code;
4543         getaddr->dreg = cfg->got_var->dreg;
4544
4545         /* Add it to the start of the first bblock */
4546         if (cfg->bb_entry->code) {
4547                 getaddr->next = cfg->bb_entry->code;
4548                 cfg->bb_entry->code = getaddr;
4549         }
4550         else
4551                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4552
4553         cfg->got_var_allocated = TRUE;
4554
4555         /*
4556          * Add a dummy use to keep the got_var alive, since real uses might
4557          * only be generated by the back ends.
4558          * Add it to end_bblock, so the variable's lifetime covers the whole
4559          * method.
4560          * It would be better to make the usage of the got var explicit in all
4561          * cases when the backend needs it (i.e. calls, throw etc.), so this
4562          * wouldn't be needed.
4563          */
4564         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4565         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4566 }
4567
4568 static int inline_limit;
4569 static gboolean inline_limit_inited;
4570
4571 static gboolean
4572 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4573 {
4574         MonoMethodHeaderSummary header;
4575         MonoVTable *vtable;
4576 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4577         MonoMethodSignature *sig = mono_method_signature (method);
4578         int i;
4579 #endif
4580
4581         if (cfg->disable_inline)
4582                 return FALSE;
4583         if (cfg->gsharedvt)
4584                 return FALSE;
4585
4586         if (cfg->inline_depth > 10)
4587                 return FALSE;
4588
4589         if (!mono_method_get_header_summary (method, &header))
4590                 return FALSE;
4591
4592         /*runtime, icall and pinvoke are checked by summary call*/
4593         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4594             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4595             (mono_class_is_marshalbyref (method->klass)) ||
4596             header.has_clauses)
4597                 return FALSE;
4598
4599         /* also consider num_locals? */
4600         /* Do the size check early to avoid creating vtables */
4601         if (!inline_limit_inited) {
4602                 char *inlinelimit;
4603                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4604                         inline_limit = atoi (inlinelimit);
4605                         g_free (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                 /*
4741                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4742                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4743                  * of OP_X86_LEA for llvm.
4744                  */
4745                 index2_reg = index_reg;
4746         } else {
4747                 index2_reg = alloc_preg (cfg);
4748                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4749         }
4750 #else
4751         if (index->type == STACK_I8) {
4752                 index2_reg = alloc_preg (cfg);
4753                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4754         } else {
4755                 index2_reg = index_reg;
4756         }
4757 #endif
4758
4759         if (bcheck)
4760                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4761
4762 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4763         if (size == 1 || size == 2 || size == 4 || size == 8) {
4764                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4765
4766                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4767                 ins->klass = mono_class_get_element_class (klass);
4768                 ins->type = STACK_MP;
4769
4770                 return ins;
4771         }
4772 #endif
4773
4774         add_reg = alloc_ireg_mp (cfg);
4775
4776         if (size == -1) {
4777                 MonoInst *rgctx_ins;
4778
4779                 /* gsharedvt */
4780                 g_assert (cfg->gshared);
4781                 context_used = mini_class_check_context_used (cfg, klass);
4782                 g_assert (context_used);
4783                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4784                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4785         } else {
4786                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4787         }
4788         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4789         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4790         ins->klass = mono_class_get_element_class (klass);
4791         ins->type = STACK_MP;
4792         MONO_ADD_INS (cfg->cbb, ins);
4793
4794         return ins;
4795 }
4796
4797 static MonoInst*
4798 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4799 {
4800         int bounds_reg = alloc_preg (cfg);
4801         int add_reg = alloc_ireg_mp (cfg);
4802         int mult_reg = alloc_preg (cfg);
4803         int mult2_reg = alloc_preg (cfg);
4804         int low1_reg = alloc_preg (cfg);
4805         int low2_reg = alloc_preg (cfg);
4806         int high1_reg = alloc_preg (cfg);
4807         int high2_reg = alloc_preg (cfg);
4808         int realidx1_reg = alloc_preg (cfg);
4809         int realidx2_reg = alloc_preg (cfg);
4810         int sum_reg = alloc_preg (cfg);
4811         int index1, index2, tmpreg;
4812         MonoInst *ins;
4813         guint32 size;
4814
4815         mono_class_init (klass);
4816         size = mono_class_array_element_size (klass);
4817
4818         index1 = index_ins1->dreg;
4819         index2 = index_ins2->dreg;
4820
4821 #if SIZEOF_REGISTER == 8
4822         /* The array reg is 64 bits but the index reg is only 32 */
4823         if (COMPILE_LLVM (cfg)) {
4824                 /* Not needed */
4825         } else {
4826                 tmpreg = alloc_preg (cfg);
4827                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4828                 index1 = tmpreg;
4829                 tmpreg = alloc_preg (cfg);
4830                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4831                 index2 = tmpreg;
4832         }
4833 #else
4834         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4835         tmpreg = -1;
4836 #endif
4837
4838         /* range checking */
4839         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4840                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4841
4842         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4843                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4844         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4845         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4846                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4847         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4848         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4849
4850         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4851                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4852         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4853         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4854                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4855         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4856         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4857
4858         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4859         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4860         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4861         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4862         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4863
4864         ins->type = STACK_MP;
4865         ins->klass = klass;
4866         MONO_ADD_INS (cfg->cbb, ins);
4867
4868         return ins;
4869 }
4870
4871 static MonoInst*
4872 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4873 {
4874         int rank;
4875         MonoInst *addr;
4876         MonoMethod *addr_method;
4877         int element_size;
4878         MonoClass *eclass = cmethod->klass->element_class;
4879
4880         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4881
4882         if (rank == 1)
4883                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4884
4885         /* emit_ldelema_2 depends on OP_LMUL */
4886         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4887                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4888         }
4889
4890         if (mini_is_gsharedvt_variable_klass (eclass))
4891                 element_size = 0;
4892         else
4893                 element_size = mono_class_array_element_size (eclass);
4894         addr_method = mono_marshal_get_array_address (rank, element_size);
4895         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4896
4897         return addr;
4898 }
4899
4900 static MonoBreakPolicy
4901 always_insert_breakpoint (MonoMethod *method)
4902 {
4903         return MONO_BREAK_POLICY_ALWAYS;
4904 }
4905
4906 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4907
4908 /**
4909  * mono_set_break_policy:
4910  * \param policy_callback the new callback function
4911  *
4912  * Allow embedders to decide wherther to actually obey breakpoint instructions
4913  * (both break IL instructions and \c Debugger.Break method calls), for example
4914  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4915  * untrusted or semi-trusted code.
4916  *
4917  * \p policy_callback will be called every time a break point instruction needs to
4918  * be inserted with the method argument being the method that calls \c Debugger.Break
4919  * or has the IL \c break instruction. The callback should return \c MONO_BREAK_POLICY_NEVER
4920  * if it wants the breakpoint to not be effective in the given method.
4921  * \c MONO_BREAK_POLICY_ALWAYS is the default.
4922  */
4923 void
4924 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4925 {
4926         if (policy_callback)
4927                 break_policy_func = policy_callback;
4928         else
4929                 break_policy_func = always_insert_breakpoint;
4930 }
4931
4932 static gboolean
4933 should_insert_brekpoint (MonoMethod *method) {
4934         switch (break_policy_func (method)) {
4935         case MONO_BREAK_POLICY_ALWAYS:
4936                 return TRUE;
4937         case MONO_BREAK_POLICY_NEVER:
4938                 return FALSE;
4939         case MONO_BREAK_POLICY_ON_DBG:
4940                 g_warning ("mdb no longer supported");
4941                 return FALSE;
4942         default:
4943                 g_warning ("Incorrect value returned from break policy callback");
4944                 return FALSE;
4945         }
4946 }
4947
4948 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4949 static MonoInst*
4950 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4951 {
4952         MonoInst *addr, *store, *load;
4953         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4954
4955         /* the bounds check is already done by the callers */
4956         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4957         if (is_set) {
4958                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4959                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4960                 if (mini_type_is_reference (&eklass->byval_arg))
4961                         emit_write_barrier (cfg, addr, load);
4962         } else {
4963                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4964                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4965         }
4966         return store;
4967 }
4968
4969
4970 static gboolean
4971 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4972 {
4973         return mini_type_is_reference (&klass->byval_arg);
4974 }
4975
4976 static MonoInst*
4977 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4978 {
4979         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4980                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4981                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4982                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4983                 MonoInst *iargs [3];
4984
4985                 if (!helper->slot)
4986                         mono_class_setup_vtable (obj_array);
4987                 g_assert (helper->slot);
4988
4989                 if (sp [0]->type != STACK_OBJ)
4990                         return NULL;
4991                 if (sp [2]->type != STACK_OBJ)
4992                         return NULL;
4993
4994                 iargs [2] = sp [2];
4995                 iargs [1] = sp [1];
4996                 iargs [0] = sp [0];
4997
4998                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4999         } else {
5000                 MonoInst *ins;
5001
5002                 if (mini_is_gsharedvt_variable_klass (klass)) {
5003                         MonoInst *addr;
5004
5005                         // FIXME-VT: OP_ICONST optimization
5006                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5007                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5008                         ins->opcode = OP_STOREV_MEMBASE;
5009                 } else if (sp [1]->opcode == OP_ICONST) {
5010                         int array_reg = sp [0]->dreg;
5011                         int index_reg = sp [1]->dreg;
5012                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5013
5014                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5015                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5016
5017                         if (safety_checks)
5018                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5019                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5020                 } else {
5021                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5022                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5023                         if (generic_class_is_reference_type (cfg, klass))
5024                                 emit_write_barrier (cfg, addr, sp [2]);
5025                 }
5026                 return ins;
5027         }
5028 }
5029
5030 static MonoInst*
5031 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5032 {
5033         MonoClass *eklass;
5034
5035         if (is_set)
5036                 eklass = mono_class_from_mono_type (fsig->params [2]);
5037         else
5038                 eklass = mono_class_from_mono_type (fsig->ret);
5039
5040         if (is_set) {
5041                 return emit_array_store (cfg, eklass, args, FALSE);
5042         } else {
5043                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5044                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5045                 return ins;
5046         }
5047 }
5048
5049 static gboolean
5050 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5051 {
5052         uint32_t align;
5053         int param_size, return_size;
5054
5055         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5056         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5057
5058         if (cfg->verbose_level > 3)
5059                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5060
5061         //Don't allow mixing reference types with value types
5062         if (param_klass->valuetype != return_klass->valuetype) {
5063                 if (cfg->verbose_level > 3)
5064                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5065                 return FALSE;
5066         }
5067
5068         if (!param_klass->valuetype) {
5069                 if (cfg->verbose_level > 3)
5070                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5071                 return TRUE;
5072         }
5073
5074         //That are blitable
5075         if (param_klass->has_references || return_klass->has_references)
5076                 return FALSE;
5077
5078         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5079         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5080                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5081                         if (cfg->verbose_level > 3)
5082                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5083                 return FALSE;
5084         }
5085
5086         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5087                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5088                 if (cfg->verbose_level > 3)
5089                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5090                 return FALSE;
5091         }
5092
5093         param_size = mono_class_value_size (param_klass, &align);
5094         return_size = mono_class_value_size (return_klass, &align);
5095
5096         //We can do it if sizes match
5097         if (param_size == return_size) {
5098                 if (cfg->verbose_level > 3)
5099                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5100                 return TRUE;
5101         }
5102
5103         //No simple way to handle struct if sizes don't match
5104         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5105                 if (cfg->verbose_level > 3)
5106                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5107                 return FALSE;
5108         }
5109
5110         /*
5111          * Same reg size category.
5112          * A quick note on why we don't require widening here.
5113          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5114          *
5115          * Since the source value comes from a function argument, the JIT will already have
5116          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5117          */
5118         if (param_size <= 4 && return_size <= 4) {
5119                 if (cfg->verbose_level > 3)
5120                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5121                 return TRUE;
5122         }
5123
5124         return FALSE;
5125 }
5126
5127 static MonoInst*
5128 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5129 {
5130         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5131         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5132
5133         if (mini_is_gsharedvt_variable_type (fsig->ret))
5134                 return NULL;
5135
5136         //Valuetypes that are semantically equivalent or numbers than can be widened to
5137         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5138                 return args [0];
5139
5140         //Arrays of valuetypes that are semantically equivalent
5141         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5142                 return args [0];
5143
5144         return NULL;
5145 }
5146
5147 static MonoInst*
5148 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5149 {
5150 #ifdef MONO_ARCH_SIMD_INTRINSICS
5151         MonoInst *ins = NULL;
5152
5153         if (cfg->opt & MONO_OPT_SIMD) {
5154                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5155                 if (ins)
5156                         return ins;
5157         }
5158 #endif
5159
5160         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5161 }
5162
5163 static MonoInst*
5164 emit_memory_barrier (MonoCompile *cfg, int kind)
5165 {
5166         MonoInst *ins = NULL;
5167         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5168         MONO_ADD_INS (cfg->cbb, ins);
5169         ins->backend.memory_barrier_kind = kind;
5170
5171         return ins;
5172 }
5173
5174 static MonoInst*
5175 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5176 {
5177         MonoInst *ins = NULL;
5178         int opcode = 0;
5179
5180         /* The LLVM backend supports these intrinsics */
5181         if (cmethod->klass == mono_defaults.math_class) {
5182                 if (strcmp (cmethod->name, "Sin") == 0) {
5183                         opcode = OP_SIN;
5184                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5185                         opcode = OP_COS;
5186                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5187                         opcode = OP_SQRT;
5188                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5189                         opcode = OP_ABS;
5190                 }
5191
5192                 if (opcode && fsig->param_count == 1) {
5193                         MONO_INST_NEW (cfg, ins, opcode);
5194                         ins->type = STACK_R8;
5195                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5196                         ins->sreg1 = args [0]->dreg;
5197                         MONO_ADD_INS (cfg->cbb, ins);
5198                 }
5199
5200                 opcode = 0;
5201                 if (cfg->opt & MONO_OPT_CMOV) {
5202                         if (strcmp (cmethod->name, "Min") == 0) {
5203                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5204                                         opcode = OP_IMIN;
5205                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5206                                         opcode = OP_IMIN_UN;
5207                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5208                                         opcode = OP_LMIN;
5209                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5210                                         opcode = OP_LMIN_UN;
5211                         } else if (strcmp (cmethod->name, "Max") == 0) {
5212                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5213                                         opcode = OP_IMAX;
5214                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5215                                         opcode = OP_IMAX_UN;
5216                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5217                                         opcode = OP_LMAX;
5218                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5219                                         opcode = OP_LMAX_UN;
5220                         }
5221                 }
5222
5223                 if (opcode && fsig->param_count == 2) {
5224                         MONO_INST_NEW (cfg, ins, opcode);
5225                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5226                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5227                         ins->sreg1 = args [0]->dreg;
5228                         ins->sreg2 = args [1]->dreg;
5229                         MONO_ADD_INS (cfg->cbb, ins);
5230                 }
5231         }
5232
5233         return ins;
5234 }
5235
5236 static MonoInst*
5237 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5238 {
5239         if (cmethod->klass == mono_defaults.array_class) {
5240                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5241                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5242                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5243                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5244                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5245                         return emit_array_unsafe_mov (cfg, fsig, args);
5246         }
5247
5248         return NULL;
5249 }
5250
5251 static MonoInst*
5252 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5253 {
5254         MonoInst *ins = NULL;
5255         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5256
5257         if (cmethod->klass == mono_defaults.string_class) {
5258                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5259                         int dreg = alloc_ireg (cfg);
5260                         int index_reg = alloc_preg (cfg);
5261                         int add_reg = alloc_preg (cfg);
5262
5263 #if SIZEOF_REGISTER == 8
5264                         if (COMPILE_LLVM (cfg)) {
5265                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5266                         } else {
5267                                 /* The array reg is 64 bits but the index reg is only 32 */
5268                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5269                         }
5270 #else
5271                         index_reg = args [1]->dreg;
5272 #endif
5273                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5274
5275 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5276                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5277                         add_reg = ins->dreg;
5278                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5279                                                                    add_reg, 0);
5280 #else
5281                         int mult_reg = alloc_preg (cfg);
5282                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5283                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5284                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5285                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5286 #endif
5287                         type_from_op (cfg, ins, NULL, NULL);
5288                         return ins;
5289                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5290                         int dreg = alloc_ireg (cfg);
5291                         /* Decompose later to allow more optimizations */
5292                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5293                         ins->type = STACK_I4;
5294                         ins->flags |= MONO_INST_FAULT;
5295                         cfg->cbb->has_array_access = TRUE;
5296                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5297
5298                         return ins;
5299                 } else
5300                         return NULL;
5301         } else if (cmethod->klass == mono_defaults.object_class) {
5302                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5303                         int dreg = alloc_ireg_ref (cfg);
5304                         int vt_reg = alloc_preg (cfg);
5305                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5306                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5307                         type_from_op (cfg, ins, NULL, NULL);
5308
5309                         return ins;
5310                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5311                         int dreg = alloc_ireg (cfg);
5312                         int t1 = alloc_ireg (cfg);
5313
5314                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5315                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5316                         ins->type = STACK_I4;
5317
5318                         return ins;
5319                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5320                         MONO_INST_NEW (cfg, ins, OP_NOP);
5321                         MONO_ADD_INS (cfg->cbb, ins);
5322                         return ins;
5323                 } else
5324                         return NULL;
5325         } else if (cmethod->klass == mono_defaults.array_class) {
5326                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5327                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5328                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5329                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5330
5331 #ifndef MONO_BIG_ARRAYS
5332                 /*
5333                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5334                  * Array methods.
5335                  */
5336                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5337                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5338                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5339                         int dreg = alloc_ireg (cfg);
5340                         int bounds_reg = alloc_ireg_mp (cfg);
5341                         MonoBasicBlock *end_bb, *szarray_bb;
5342                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5343
5344                         NEW_BBLOCK (cfg, end_bb);
5345                         NEW_BBLOCK (cfg, szarray_bb);
5346
5347                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5348                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5349                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5350                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5351                         /* Non-szarray case */
5352                         if (get_length)
5353                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5354                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5355                         else
5356                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5357                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5358                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5359                         MONO_START_BB (cfg, szarray_bb);
5360                         /* Szarray case */
5361                         if (get_length)
5362                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5363                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5364                         else
5365                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5366                         MONO_START_BB (cfg, end_bb);
5367
5368                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5369                         ins->type = STACK_I4;
5370
5371                         return ins;
5372                 }
5373 #endif
5374
5375                 if (cmethod->name [0] != 'g')
5376                         return NULL;
5377
5378                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5379                         int dreg = alloc_ireg (cfg);
5380                         int vtable_reg = alloc_preg (cfg);
5381                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5382                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5383                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5384                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5385                         type_from_op (cfg, ins, NULL, NULL);
5386
5387                         return ins;
5388                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5389                         int dreg = alloc_ireg (cfg);
5390
5391                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5392                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5393                         type_from_op (cfg, ins, NULL, NULL);
5394
5395                         return ins;
5396                 } else
5397                         return NULL;
5398         } else if (cmethod->klass == runtime_helpers_class) {
5399                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5400                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5401                         return ins;
5402                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5403                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5404                         g_assert (ctx);
5405                         g_assert (ctx->method_inst);
5406                         g_assert (ctx->method_inst->type_argc == 1);
5407                         MonoType *t = mini_get_underlying_type (ctx->method_inst->type_argv [0]);
5408                         MonoClass *klass = mono_class_from_mono_type (t);
5409
5410                         ins = NULL;
5411
5412                         mono_class_init (klass);
5413                         if (MONO_TYPE_IS_REFERENCE (t))
5414                                 EMIT_NEW_ICONST (cfg, ins, 1);
5415                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5416                                 EMIT_NEW_ICONST (cfg, ins, 0);
5417                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5418                                 EMIT_NEW_ICONST (cfg, ins, 1);
5419                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5420                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5421                         else {
5422                                 g_assert (cfg->gshared);
5423
5424                                 int context_used = mini_class_check_context_used (cfg, klass);
5425
5426                                 /* This returns 1 or 2 */
5427                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, klass,   MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5428                                 int dreg = alloc_ireg (cfg);
5429                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5430                         }
5431
5432                         return ins;
5433                 } else
5434                         return NULL;
5435         } else if (cmethod->klass == mono_defaults.monitor_class) {
5436                 gboolean is_enter = FALSE;
5437                 gboolean is_v4 = FALSE;
5438
5439                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5440                         is_enter = TRUE;
5441                         is_v4 = TRUE;
5442                 }
5443                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5444                         is_enter = TRUE;
5445
5446                 if (is_enter) {
5447                         /*
5448                          * To make async stack traces work, icalls which can block should have a wrapper.
5449                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5450                          */
5451                         MonoBasicBlock *end_bb;
5452
5453                         NEW_BBLOCK (cfg, end_bb);
5454
5455                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5456                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5457                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5458                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5459                         MONO_START_BB (cfg, end_bb);
5460                         return ins;
5461                 }
5462         } else if (cmethod->klass == mono_defaults.thread_class) {
5463                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5464                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5465                         MONO_ADD_INS (cfg->cbb, ins);
5466                         return ins;
5467                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5468                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5469                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5470                         guint32 opcode = 0;
5471                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5472
5473                         if (fsig->params [0]->type == MONO_TYPE_I1)
5474                                 opcode = OP_LOADI1_MEMBASE;
5475                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5476                                 opcode = OP_LOADU1_MEMBASE;
5477                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5478                                 opcode = OP_LOADI2_MEMBASE;
5479                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5480                                 opcode = OP_LOADU2_MEMBASE;
5481                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5482                                 opcode = OP_LOADI4_MEMBASE;
5483                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5484                                 opcode = OP_LOADU4_MEMBASE;
5485                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5486                                 opcode = OP_LOADI8_MEMBASE;
5487                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5488                                 opcode = OP_LOADR4_MEMBASE;
5489                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5490                                 opcode = OP_LOADR8_MEMBASE;
5491                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5492                                 opcode = OP_LOAD_MEMBASE;
5493
5494                         if (opcode) {
5495                                 MONO_INST_NEW (cfg, ins, opcode);
5496                                 ins->inst_basereg = args [0]->dreg;
5497                                 ins->inst_offset = 0;
5498                                 MONO_ADD_INS (cfg->cbb, ins);
5499
5500                                 switch (fsig->params [0]->type) {
5501                                 case MONO_TYPE_I1:
5502                                 case MONO_TYPE_U1:
5503                                 case MONO_TYPE_I2:
5504                                 case MONO_TYPE_U2:
5505                                 case MONO_TYPE_I4:
5506                                 case MONO_TYPE_U4:
5507                                         ins->dreg = mono_alloc_ireg (cfg);
5508                                         ins->type = STACK_I4;
5509                                         break;
5510                                 case MONO_TYPE_I8:
5511                                 case MONO_TYPE_U8:
5512                                         ins->dreg = mono_alloc_lreg (cfg);
5513                                         ins->type = STACK_I8;
5514                                         break;
5515                                 case MONO_TYPE_I:
5516                                 case MONO_TYPE_U:
5517                                         ins->dreg = mono_alloc_ireg (cfg);
5518 #if SIZEOF_REGISTER == 8
5519                                         ins->type = STACK_I8;
5520 #else
5521                                         ins->type = STACK_I4;
5522 #endif
5523                                         break;
5524                                 case MONO_TYPE_R4:
5525                                 case MONO_TYPE_R8:
5526                                         ins->dreg = mono_alloc_freg (cfg);
5527                                         ins->type = STACK_R8;
5528                                         break;
5529                                 default:
5530                                         g_assert (mini_type_is_reference (fsig->params [0]));
5531                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5532                                         ins->type = STACK_OBJ;
5533                                         break;
5534                                 }
5535
5536                                 if (opcode == OP_LOADI8_MEMBASE)
5537                                         ins = mono_decompose_opcode (cfg, ins);
5538
5539                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5540
5541                                 return ins;
5542                         }
5543                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5544                         guint32 opcode = 0;
5545                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5546
5547                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5548                                 opcode = OP_STOREI1_MEMBASE_REG;
5549                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5550                                 opcode = OP_STOREI2_MEMBASE_REG;
5551                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5552                                 opcode = OP_STOREI4_MEMBASE_REG;
5553                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5554                                 opcode = OP_STOREI8_MEMBASE_REG;
5555                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5556                                 opcode = OP_STORER4_MEMBASE_REG;
5557                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5558                                 opcode = OP_STORER8_MEMBASE_REG;
5559                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5560                                 opcode = OP_STORE_MEMBASE_REG;
5561
5562                         if (opcode) {
5563                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5564
5565                                 MONO_INST_NEW (cfg, ins, opcode);
5566                                 ins->sreg1 = args [1]->dreg;
5567                                 ins->inst_destbasereg = args [0]->dreg;
5568                                 ins->inst_offset = 0;
5569                                 MONO_ADD_INS (cfg->cbb, ins);
5570
5571                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5572                                         ins = mono_decompose_opcode (cfg, ins);
5573
5574                                 return ins;
5575                         }
5576                 }
5577         } else if (cmethod->klass->image == mono_defaults.corlib &&
5578                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5579                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5580                 ins = NULL;
5581
5582 #if SIZEOF_REGISTER == 8
5583                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5584                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5585                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5586                                 ins->dreg = mono_alloc_preg (cfg);
5587                                 ins->sreg1 = args [0]->dreg;
5588                                 ins->type = STACK_I8;
5589                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5590                                 MONO_ADD_INS (cfg->cbb, ins);
5591                         } else {
5592                                 MonoInst *load_ins;
5593
5594                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5595
5596                                 /* 64 bit reads are already atomic */
5597                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5598                                 load_ins->dreg = mono_alloc_preg (cfg);
5599                                 load_ins->inst_basereg = args [0]->dreg;
5600                                 load_ins->inst_offset = 0;
5601                                 load_ins->type = STACK_I8;
5602                                 MONO_ADD_INS (cfg->cbb, load_ins);
5603
5604                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5605
5606                                 ins = load_ins;
5607                         }
5608                 }
5609 #endif
5610
5611                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5612                         MonoInst *ins_iconst;
5613                         guint32 opcode = 0;
5614
5615                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5616                                 opcode = OP_ATOMIC_ADD_I4;
5617                                 cfg->has_atomic_add_i4 = TRUE;
5618                         }
5619 #if SIZEOF_REGISTER == 8
5620                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5621                                 opcode = OP_ATOMIC_ADD_I8;
5622 #endif
5623                         if (opcode) {
5624                                 if (!mono_arch_opcode_supported (opcode))
5625                                         return NULL;
5626                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5627                                 ins_iconst->inst_c0 = 1;
5628                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5629                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5630
5631                                 MONO_INST_NEW (cfg, ins, opcode);
5632                                 ins->dreg = mono_alloc_ireg (cfg);
5633                                 ins->inst_basereg = args [0]->dreg;
5634                                 ins->inst_offset = 0;
5635                                 ins->sreg2 = ins_iconst->dreg;
5636                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5637                                 MONO_ADD_INS (cfg->cbb, ins);
5638                         }
5639                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5640                         MonoInst *ins_iconst;
5641                         guint32 opcode = 0;
5642
5643                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5644                                 opcode = OP_ATOMIC_ADD_I4;
5645                                 cfg->has_atomic_add_i4 = TRUE;
5646                         }
5647 #if SIZEOF_REGISTER == 8
5648                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5649                                 opcode = OP_ATOMIC_ADD_I8;
5650 #endif
5651                         if (opcode) {
5652                                 if (!mono_arch_opcode_supported (opcode))
5653                                         return NULL;
5654                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5655                                 ins_iconst->inst_c0 = -1;
5656                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5657                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5658
5659                                 MONO_INST_NEW (cfg, ins, opcode);
5660                                 ins->dreg = mono_alloc_ireg (cfg);
5661                                 ins->inst_basereg = args [0]->dreg;
5662                                 ins->inst_offset = 0;
5663                                 ins->sreg2 = ins_iconst->dreg;
5664                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5665                                 MONO_ADD_INS (cfg->cbb, ins);
5666                         }
5667                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5668                         guint32 opcode = 0;
5669
5670                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5671                                 opcode = OP_ATOMIC_ADD_I4;
5672                                 cfg->has_atomic_add_i4 = TRUE;
5673                         }
5674 #if SIZEOF_REGISTER == 8
5675                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5676                                 opcode = OP_ATOMIC_ADD_I8;
5677 #endif
5678                         if (opcode) {
5679                                 if (!mono_arch_opcode_supported (opcode))
5680                                         return NULL;
5681                                 MONO_INST_NEW (cfg, ins, opcode);
5682                                 ins->dreg = mono_alloc_ireg (cfg);
5683                                 ins->inst_basereg = args [0]->dreg;
5684                                 ins->inst_offset = 0;
5685                                 ins->sreg2 = args [1]->dreg;
5686                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5687                                 MONO_ADD_INS (cfg->cbb, ins);
5688                         }
5689                 }
5690                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5691                         MonoInst *f2i = NULL, *i2f;
5692                         guint32 opcode, f2i_opcode, i2f_opcode;
5693                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5694                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5695
5696                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5697                             fsig->params [0]->type == MONO_TYPE_R4) {
5698                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5699                                 f2i_opcode = OP_MOVE_F_TO_I4;
5700                                 i2f_opcode = OP_MOVE_I4_TO_F;
5701                                 cfg->has_atomic_exchange_i4 = TRUE;
5702                         }
5703 #if SIZEOF_REGISTER == 8
5704                         else if (is_ref ||
5705                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5706                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5707                                  fsig->params [0]->type == MONO_TYPE_I) {
5708                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5709                                 f2i_opcode = OP_MOVE_F_TO_I8;
5710                                 i2f_opcode = OP_MOVE_I8_TO_F;
5711                         }
5712 #else
5713                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5714                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5715                                 cfg->has_atomic_exchange_i4 = TRUE;
5716                         }
5717 #endif
5718                         else
5719                                 return NULL;
5720
5721                         if (!mono_arch_opcode_supported (opcode))
5722                                 return NULL;
5723
5724                         if (is_float) {
5725                                 /* TODO: Decompose these opcodes instead of bailing here. */
5726                                 if (COMPILE_SOFT_FLOAT (cfg))
5727                                         return NULL;
5728
5729                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5730                                 f2i->dreg = mono_alloc_ireg (cfg);
5731                                 f2i->sreg1 = args [1]->dreg;
5732                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5733                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5734                                 MONO_ADD_INS (cfg->cbb, f2i);
5735                         }
5736
5737                         MONO_INST_NEW (cfg, ins, opcode);
5738                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5739                         ins->inst_basereg = args [0]->dreg;
5740                         ins->inst_offset = 0;
5741                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5742                         MONO_ADD_INS (cfg->cbb, ins);
5743
5744                         switch (fsig->params [0]->type) {
5745                         case MONO_TYPE_I4:
5746                                 ins->type = STACK_I4;
5747                                 break;
5748                         case MONO_TYPE_I8:
5749                                 ins->type = STACK_I8;
5750                                 break;
5751                         case MONO_TYPE_I:
5752 #if SIZEOF_REGISTER == 8
5753                                 ins->type = STACK_I8;
5754 #else
5755                                 ins->type = STACK_I4;
5756 #endif
5757                                 break;
5758                         case MONO_TYPE_R4:
5759                         case MONO_TYPE_R8:
5760                                 ins->type = STACK_R8;
5761                                 break;
5762                         default:
5763                                 g_assert (mini_type_is_reference (fsig->params [0]));
5764                                 ins->type = STACK_OBJ;
5765                                 break;
5766                         }
5767
5768                         if (is_float) {
5769                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5770                                 i2f->dreg = mono_alloc_freg (cfg);
5771                                 i2f->sreg1 = ins->dreg;
5772                                 i2f->type = STACK_R8;
5773                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5774                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5775                                 MONO_ADD_INS (cfg->cbb, i2f);
5776
5777                                 ins = i2f;
5778                         }
5779
5780                         if (cfg->gen_write_barriers && is_ref)
5781                                 emit_write_barrier (cfg, args [0], args [1]);
5782                 }
5783                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5784                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5785                         guint32 opcode, f2i_opcode, i2f_opcode;
5786                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5787                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5788
5789                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5790                             fsig->params [1]->type == MONO_TYPE_R4) {
5791                                 opcode = OP_ATOMIC_CAS_I4;
5792                                 f2i_opcode = OP_MOVE_F_TO_I4;
5793                                 i2f_opcode = OP_MOVE_I4_TO_F;
5794                                 cfg->has_atomic_cas_i4 = TRUE;
5795                         }
5796 #if SIZEOF_REGISTER == 8
5797                         else if (is_ref ||
5798                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5799                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5800                                  fsig->params [1]->type == MONO_TYPE_I) {
5801                                 opcode = OP_ATOMIC_CAS_I8;
5802                                 f2i_opcode = OP_MOVE_F_TO_I8;
5803                                 i2f_opcode = OP_MOVE_I8_TO_F;
5804                         }
5805 #else
5806                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5807                                 opcode = OP_ATOMIC_CAS_I4;
5808                                 cfg->has_atomic_cas_i4 = TRUE;
5809                         }
5810 #endif
5811                         else
5812                                 return NULL;
5813
5814                         if (!mono_arch_opcode_supported (opcode))
5815                                 return NULL;
5816
5817                         if (is_float) {
5818                                 /* TODO: Decompose these opcodes instead of bailing here. */
5819                                 if (COMPILE_SOFT_FLOAT (cfg))
5820                                         return NULL;
5821
5822                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5823                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5824                                 f2i_new->sreg1 = args [1]->dreg;
5825                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5826                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5827                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5828
5829                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5830                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5831                                 f2i_cmp->sreg1 = args [2]->dreg;
5832                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5833                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5834                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5835                         }
5836
5837                         MONO_INST_NEW (cfg, ins, opcode);
5838                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5839                         ins->sreg1 = args [0]->dreg;
5840                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5841                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5842                         MONO_ADD_INS (cfg->cbb, ins);
5843
5844                         switch (fsig->params [1]->type) {
5845                         case MONO_TYPE_I4:
5846                                 ins->type = STACK_I4;
5847                                 break;
5848                         case MONO_TYPE_I8:
5849                                 ins->type = STACK_I8;
5850                                 break;
5851                         case MONO_TYPE_I:
5852 #if SIZEOF_REGISTER == 8
5853                                 ins->type = STACK_I8;
5854 #else
5855                                 ins->type = STACK_I4;
5856 #endif
5857                                 break;
5858                         case MONO_TYPE_R4:
5859                                 ins->type = cfg->r4_stack_type;
5860                                 break;
5861                         case MONO_TYPE_R8:
5862                                 ins->type = STACK_R8;
5863                                 break;
5864                         default:
5865                                 g_assert (mini_type_is_reference (fsig->params [1]));
5866                                 ins->type = STACK_OBJ;
5867                                 break;
5868                         }
5869
5870                         if (is_float) {
5871                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5872                                 i2f->dreg = mono_alloc_freg (cfg);
5873                                 i2f->sreg1 = ins->dreg;
5874                                 i2f->type = STACK_R8;
5875                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5876                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5877                                 MONO_ADD_INS (cfg->cbb, i2f);
5878
5879                                 ins = i2f;
5880                         }
5881
5882                         if (cfg->gen_write_barriers && is_ref)
5883                                 emit_write_barrier (cfg, args [0], args [1]);
5884                 }
5885                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5886                          fsig->params [1]->type == MONO_TYPE_I4) {
5887                         MonoInst *cmp, *ceq;
5888
5889                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5890                                 return NULL;
5891
5892                         /* int32 r = CAS (location, value, comparand); */
5893                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5894                         ins->dreg = alloc_ireg (cfg);
5895                         ins->sreg1 = args [0]->dreg;
5896                         ins->sreg2 = args [1]->dreg;
5897                         ins->sreg3 = args [2]->dreg;
5898                         ins->type = STACK_I4;
5899                         MONO_ADD_INS (cfg->cbb, ins);
5900
5901                         /* bool result = r == comparand; */
5902                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5903                         cmp->sreg1 = ins->dreg;
5904                         cmp->sreg2 = args [2]->dreg;
5905                         cmp->type = STACK_I4;
5906                         MONO_ADD_INS (cfg->cbb, cmp);
5907
5908                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5909                         ceq->dreg = alloc_ireg (cfg);
5910                         ceq->type = STACK_I4;
5911                         MONO_ADD_INS (cfg->cbb, ceq);
5912
5913                         /* *success = result; */
5914                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5915
5916                         cfg->has_atomic_cas_i4 = TRUE;
5917                 }
5918                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5919                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5920
5921                 if (ins)
5922                         return ins;
5923         } else if (cmethod->klass->image == mono_defaults.corlib &&
5924                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5925                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5926                 ins = NULL;
5927
5928                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5929                         guint32 opcode = 0;
5930                         MonoType *t = fsig->params [0];
5931                         gboolean is_ref;
5932                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5933
5934                         g_assert (t->byref);
5935                         /* t is a byref type, so the reference check is more complicated */
5936                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5937                         if (t->type == MONO_TYPE_I1)
5938                                 opcode = OP_ATOMIC_LOAD_I1;
5939                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5940                                 opcode = OP_ATOMIC_LOAD_U1;
5941                         else if (t->type == MONO_TYPE_I2)
5942                                 opcode = OP_ATOMIC_LOAD_I2;
5943                         else if (t->type == MONO_TYPE_U2)
5944                                 opcode = OP_ATOMIC_LOAD_U2;
5945                         else if (t->type == MONO_TYPE_I4)
5946                                 opcode = OP_ATOMIC_LOAD_I4;
5947                         else if (t->type == MONO_TYPE_U4)
5948                                 opcode = OP_ATOMIC_LOAD_U4;
5949                         else if (t->type == MONO_TYPE_R4)
5950                                 opcode = OP_ATOMIC_LOAD_R4;
5951                         else if (t->type == MONO_TYPE_R8)
5952                                 opcode = OP_ATOMIC_LOAD_R8;
5953 #if SIZEOF_REGISTER == 8
5954                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5955                                 opcode = OP_ATOMIC_LOAD_I8;
5956                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5957                                 opcode = OP_ATOMIC_LOAD_U8;
5958 #else
5959                         else if (t->type == MONO_TYPE_I)
5960                                 opcode = OP_ATOMIC_LOAD_I4;
5961                         else if (is_ref || t->type == MONO_TYPE_U)
5962                                 opcode = OP_ATOMIC_LOAD_U4;
5963 #endif
5964
5965                         if (opcode) {
5966                                 if (!mono_arch_opcode_supported (opcode))
5967                                         return NULL;
5968
5969                                 MONO_INST_NEW (cfg, ins, opcode);
5970                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5971                                 ins->sreg1 = args [0]->dreg;
5972                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5973                                 MONO_ADD_INS (cfg->cbb, ins);
5974
5975                                 switch (t->type) {
5976                                 case MONO_TYPE_BOOLEAN:
5977                                 case MONO_TYPE_I1:
5978                                 case MONO_TYPE_U1:
5979                                 case MONO_TYPE_I2:
5980                                 case MONO_TYPE_U2:
5981                                 case MONO_TYPE_I4:
5982                                 case MONO_TYPE_U4:
5983                                         ins->type = STACK_I4;
5984                                         break;
5985                                 case MONO_TYPE_I8:
5986                                 case MONO_TYPE_U8:
5987                                         ins->type = STACK_I8;
5988                                         break;
5989                                 case MONO_TYPE_I:
5990                                 case MONO_TYPE_U:
5991 #if SIZEOF_REGISTER == 8
5992                                         ins->type = STACK_I8;
5993 #else
5994                                         ins->type = STACK_I4;
5995 #endif
5996                                         break;
5997                                 case MONO_TYPE_R4:
5998                                         ins->type = cfg->r4_stack_type;
5999                                         break;
6000                                 case MONO_TYPE_R8:
6001                                         ins->type = STACK_R8;
6002                                         break;
6003                                 default:
6004                                         g_assert (is_ref);
6005                                         ins->type = STACK_OBJ;
6006                                         break;
6007                                 }
6008                         }
6009                 }
6010
6011                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6012                         guint32 opcode = 0;
6013                         MonoType *t = fsig->params [0];
6014                         gboolean is_ref;
6015
6016                         g_assert (t->byref);
6017                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6018                         if (t->type == MONO_TYPE_I1)
6019                                 opcode = OP_ATOMIC_STORE_I1;
6020                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6021                                 opcode = OP_ATOMIC_STORE_U1;
6022                         else if (t->type == MONO_TYPE_I2)
6023                                 opcode = OP_ATOMIC_STORE_I2;
6024                         else if (t->type == MONO_TYPE_U2)
6025                                 opcode = OP_ATOMIC_STORE_U2;
6026                         else if (t->type == MONO_TYPE_I4)
6027                                 opcode = OP_ATOMIC_STORE_I4;
6028                         else if (t->type == MONO_TYPE_U4)
6029                                 opcode = OP_ATOMIC_STORE_U4;
6030                         else if (t->type == MONO_TYPE_R4)
6031                                 opcode = OP_ATOMIC_STORE_R4;
6032                         else if (t->type == MONO_TYPE_R8)
6033                                 opcode = OP_ATOMIC_STORE_R8;
6034 #if SIZEOF_REGISTER == 8
6035                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6036                                 opcode = OP_ATOMIC_STORE_I8;
6037                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6038                                 opcode = OP_ATOMIC_STORE_U8;
6039 #else
6040                         else if (t->type == MONO_TYPE_I)
6041                                 opcode = OP_ATOMIC_STORE_I4;
6042                         else if (is_ref || t->type == MONO_TYPE_U)
6043                                 opcode = OP_ATOMIC_STORE_U4;
6044 #endif
6045
6046                         if (opcode) {
6047                                 if (!mono_arch_opcode_supported (opcode))
6048                                         return NULL;
6049
6050                                 MONO_INST_NEW (cfg, ins, opcode);
6051                                 ins->dreg = args [0]->dreg;
6052                                 ins->sreg1 = args [1]->dreg;
6053                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6054                                 MONO_ADD_INS (cfg->cbb, ins);
6055
6056                                 if (cfg->gen_write_barriers && is_ref)
6057                                         emit_write_barrier (cfg, args [0], args [1]);
6058                         }
6059                 }
6060
6061                 if (ins)
6062                         return ins;
6063         } else if (cmethod->klass->image == mono_defaults.corlib &&
6064                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6065                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6066                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6067                         if (should_insert_brekpoint (cfg->method)) {
6068                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6069                         } else {
6070                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6071                                 MONO_ADD_INS (cfg->cbb, ins);
6072                         }
6073                         return ins;
6074                 }
6075         } else if (cmethod->klass->image == mono_defaults.corlib &&
6076                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6077                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6078                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6079 #ifdef TARGET_WIN32
6080                         EMIT_NEW_ICONST (cfg, ins, 1);
6081 #else
6082                         EMIT_NEW_ICONST (cfg, ins, 0);
6083 #endif
6084                 }
6085         } else if (cmethod->klass->image == mono_defaults.corlib &&
6086                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6087                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6088                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6089                         /* No stack walks are currently available, so implement this as an intrinsic */
6090                         MonoInst *assembly_ins;
6091
6092                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6093                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6094                         return ins;
6095                 }
6096         } else if (cmethod->klass->image == mono_defaults.corlib &&
6097                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6098                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6099                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6100                         /* No stack walks are currently available, so implement this as an intrinsic */
6101                         MonoInst *method_ins;
6102                         MonoMethod *declaring = cfg->method;
6103
6104                         /* This returns the declaring generic method */
6105                         if (declaring->is_inflated)
6106                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6107                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6108                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6109                         cfg->no_inline = TRUE;
6110                         if (cfg->method != cfg->current_method)
6111                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6112                         return ins;
6113                 }
6114         } else if (cmethod->klass == mono_defaults.math_class) {
6115                 /*
6116                  * There is general branchless code for Min/Max, but it does not work for
6117                  * all inputs:
6118                  * http://everything2.com/?node_id=1051618
6119                  */
6120         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
6121                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
6122                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
6123                 ins->dreg = alloc_preg (cfg);
6124                 ins->type = STACK_I4;
6125                 MONO_ADD_INS (cfg->cbb, ins);
6126                 return ins;
6127         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6128                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6129                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6130                                 !strcmp (cmethod->klass->name, "Selector")) ||
6131                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6132                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6133                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6134                                 !strcmp (cmethod->klass->name, "Selector"))
6135                            ) {
6136                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6137                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6138                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6139                     cfg->compile_aot) {
6140                         MonoInst *pi;
6141                         MonoJumpInfoToken *ji;
6142                         char *s;
6143
6144                         if (args [0]->opcode == OP_GOT_ENTRY) {
6145                                 pi = (MonoInst *)args [0]->inst_p1;
6146                                 g_assert (pi->opcode == OP_PATCH_INFO);
6147                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6148                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6149                         } else {
6150                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6151                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6152                         }
6153
6154                         NULLIFY_INS (args [0]);
6155
6156                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6157                         return_val_if_nok (&cfg->error, NULL);
6158
6159                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6160                         ins->dreg = mono_alloc_ireg (cfg);
6161                         // FIXME: Leaks
6162                         ins->inst_p0 = s;
6163                         MONO_ADD_INS (cfg->cbb, ins);
6164                         return ins;
6165                 }
6166         }
6167
6168 #ifdef MONO_ARCH_SIMD_INTRINSICS
6169         if (cfg->opt & MONO_OPT_SIMD) {
6170                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6171                 if (ins)
6172                         return ins;
6173         }
6174 #endif
6175
6176         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6177         if (ins)
6178                 return ins;
6179
6180         if (COMPILE_LLVM (cfg)) {
6181                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6182                 if (ins)
6183                         return ins;
6184         }
6185
6186         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6187 }
6188
6189 /*
6190  * This entry point could be used later for arbitrary method
6191  * redirection.
6192  */
6193 inline static MonoInst*
6194 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6195                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6196 {
6197         if (method->klass == mono_defaults.string_class) {
6198                 /* managed string allocation support */
6199                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6200                         MonoInst *iargs [2];
6201                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6202                         MonoMethod *managed_alloc = NULL;
6203
6204                         g_assert (vtable); /*Should not fail since it System.String*/
6205 #ifndef MONO_CROSS_COMPILE
6206                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6207 #endif
6208                         if (!managed_alloc)
6209                                 return NULL;
6210                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6211                         iargs [1] = args [0];
6212                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6213                 }
6214         }
6215         return NULL;
6216 }
6217
6218 static void
6219 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6220 {
6221         MonoInst *store, *temp;
6222         int i;
6223
6224         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6225                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6226
6227                 /*
6228                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6229                  * would be different than the MonoInst's used to represent arguments, and
6230                  * the ldelema implementation can't deal with that.
6231                  * Solution: When ldelema is used on an inline argument, create a var for
6232                  * it, emit ldelema on that var, and emit the saving code below in
6233                  * inline_method () if needed.
6234                  */
6235                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6236                 cfg->args [i] = temp;
6237                 /* This uses cfg->args [i] which is set by the preceeding line */
6238                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6239                 store->cil_code = sp [0]->cil_code;
6240                 sp++;
6241         }
6242 }
6243
6244 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6245 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6246
6247 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6248 static gboolean
6249 check_inline_called_method_name_limit (MonoMethod *called_method)
6250 {
6251         int strncmp_result;
6252         static const char *limit = NULL;
6253
6254         if (limit == NULL) {
6255                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6256
6257                 if (limit_string != NULL)
6258                         limit = limit_string;
6259                 else
6260                         limit = "";
6261         }
6262
6263         if (limit [0] != '\0') {
6264                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6265
6266                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6267                 g_free (called_method_name);
6268
6269                 //return (strncmp_result <= 0);
6270                 return (strncmp_result == 0);
6271         } else {
6272                 return TRUE;
6273         }
6274 }
6275 #endif
6276
6277 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6278 static gboolean
6279 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6280 {
6281         int strncmp_result;
6282         static const char *limit = NULL;
6283
6284         if (limit == NULL) {
6285                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6286                 if (limit_string != NULL) {
6287                         limit = limit_string;
6288                 } else {
6289                         limit = "";
6290                 }
6291         }
6292
6293         if (limit [0] != '\0') {
6294                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6295
6296                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6297                 g_free (caller_method_name);
6298
6299                 //return (strncmp_result <= 0);
6300                 return (strncmp_result == 0);
6301         } else {
6302                 return TRUE;
6303         }
6304 }
6305 #endif
6306
6307 static void
6308 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6309 {
6310         static double r8_0 = 0.0;
6311         static float r4_0 = 0.0;
6312         MonoInst *ins;
6313         int t;
6314
6315         rtype = mini_get_underlying_type (rtype);
6316         t = rtype->type;
6317
6318         if (rtype->byref) {
6319                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6320         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6321                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6322         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6323                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6324         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6325                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6326                 ins->type = STACK_R4;
6327                 ins->inst_p0 = (void*)&r4_0;
6328                 ins->dreg = dreg;
6329                 MONO_ADD_INS (cfg->cbb, ins);
6330         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6331                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6332                 ins->type = STACK_R8;
6333                 ins->inst_p0 = (void*)&r8_0;
6334                 ins->dreg = dreg;
6335                 MONO_ADD_INS (cfg->cbb, ins);
6336         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6337                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6338                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6339         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6340                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6341         } else {
6342                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6343         }
6344 }
6345
6346 static void
6347 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6348 {
6349         int t;
6350
6351         rtype = mini_get_underlying_type (rtype);
6352         t = rtype->type;
6353
6354         if (rtype->byref) {
6355                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6356         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6357                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6358         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6359                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6360         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6361                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6362         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6363                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6364         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6365                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6366                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6367         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6368                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6369         } else {
6370                 emit_init_rvar (cfg, dreg, rtype);
6371         }
6372 }
6373
6374 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6375 static void
6376 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6377 {
6378         MonoInst *var = cfg->locals [local];
6379         if (COMPILE_SOFT_FLOAT (cfg)) {
6380                 MonoInst *store;
6381                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6382                 emit_init_rvar (cfg, reg, type);
6383                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6384         } else {
6385                 if (init)
6386                         emit_init_rvar (cfg, var->dreg, type);
6387                 else
6388                         emit_dummy_init_rvar (cfg, var->dreg, type);
6389         }
6390 }
6391
6392 int
6393 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6394 {
6395         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6396 }
6397
6398 /*
6399  * inline_method:
6400  *
6401  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6402  */
6403 static int
6404 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6405                guchar *ip, guint real_offset, gboolean inline_always)
6406 {
6407         MonoError error;
6408         MonoInst *ins, *rvar = NULL;
6409         MonoMethodHeader *cheader;
6410         MonoBasicBlock *ebblock, *sbblock;
6411         int i, costs;
6412         MonoMethod *prev_inlined_method;
6413         MonoInst **prev_locals, **prev_args;
6414         MonoType **prev_arg_types;
6415         guint prev_real_offset;
6416         GHashTable *prev_cbb_hash;
6417         MonoBasicBlock **prev_cil_offset_to_bb;
6418         MonoBasicBlock *prev_cbb;
6419         const unsigned char *prev_ip;
6420         unsigned char *prev_cil_start;
6421         guint32 prev_cil_offset_to_bb_len;
6422         MonoMethod *prev_current_method;
6423         MonoGenericContext *prev_generic_context;
6424         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6425
6426         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6427
6428 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6429         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6430                 return 0;
6431 #endif
6432 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6433         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6434                 return 0;
6435 #endif
6436
6437         if (!fsig)
6438                 fsig = mono_method_signature (cmethod);
6439
6440         if (cfg->verbose_level > 2)
6441                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6442
6443         if (!cmethod->inline_info) {
6444                 cfg->stat_inlineable_methods++;
6445                 cmethod->inline_info = 1;
6446         }
6447
6448         /* allocate local variables */
6449         cheader = mono_method_get_header_checked (cmethod, &error);
6450         if (!cheader) {
6451                 if (inline_always) {
6452                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6453                         mono_error_move (&cfg->error, &error);
6454                 } else {
6455                         mono_error_cleanup (&error);
6456                 }
6457                 return 0;
6458         }
6459
6460         /*Must verify before creating locals as it can cause the JIT to assert.*/
6461         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6462                 mono_metadata_free_mh (cheader);
6463                 return 0;
6464         }
6465
6466         /* allocate space to store the return value */
6467         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6468                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6469         }
6470
6471         prev_locals = cfg->locals;
6472         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6473         for (i = 0; i < cheader->num_locals; ++i)
6474                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6475
6476         /* allocate start and end blocks */
6477         /* This is needed so if the inline is aborted, we can clean up */
6478         NEW_BBLOCK (cfg, sbblock);
6479         sbblock->real_offset = real_offset;
6480
6481         NEW_BBLOCK (cfg, ebblock);
6482         ebblock->block_num = cfg->num_bblocks++;
6483         ebblock->real_offset = real_offset;
6484
6485         prev_args = cfg->args;
6486         prev_arg_types = cfg->arg_types;
6487         prev_inlined_method = cfg->inlined_method;
6488         cfg->inlined_method = cmethod;
6489         cfg->ret_var_set = FALSE;
6490         cfg->inline_depth ++;
6491         prev_real_offset = cfg->real_offset;
6492         prev_cbb_hash = cfg->cbb_hash;
6493         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6494         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6495         prev_cil_start = cfg->cil_start;
6496         prev_ip = cfg->ip;
6497         prev_cbb = cfg->cbb;
6498         prev_current_method = cfg->current_method;
6499         prev_generic_context = cfg->generic_context;
6500         prev_ret_var_set = cfg->ret_var_set;
6501         prev_disable_inline = cfg->disable_inline;
6502
6503         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6504                 virtual_ = TRUE;
6505
6506         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6507
6508         ret_var_set = cfg->ret_var_set;
6509
6510         cfg->inlined_method = prev_inlined_method;
6511         cfg->real_offset = prev_real_offset;
6512         cfg->cbb_hash = prev_cbb_hash;
6513         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6514         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6515         cfg->cil_start = prev_cil_start;
6516         cfg->ip = prev_ip;
6517         cfg->locals = prev_locals;
6518         cfg->args = prev_args;
6519         cfg->arg_types = prev_arg_types;
6520         cfg->current_method = prev_current_method;
6521         cfg->generic_context = prev_generic_context;
6522         cfg->ret_var_set = prev_ret_var_set;
6523         cfg->disable_inline = prev_disable_inline;
6524         cfg->inline_depth --;
6525
6526         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6527                 if (cfg->verbose_level > 2)
6528                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6529
6530                 cfg->stat_inlined_methods++;
6531
6532                 /* always add some code to avoid block split failures */
6533                 MONO_INST_NEW (cfg, ins, OP_NOP);
6534                 MONO_ADD_INS (prev_cbb, ins);
6535
6536                 prev_cbb->next_bb = sbblock;
6537                 link_bblock (cfg, prev_cbb, sbblock);
6538
6539                 /*
6540                  * Get rid of the begin and end bblocks if possible to aid local
6541                  * optimizations.
6542                  */
6543                 if (prev_cbb->out_count == 1)
6544                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6545
6546                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6547                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6548
6549                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6550                         MonoBasicBlock *prev = ebblock->in_bb [0];
6551
6552                         if (prev->next_bb == ebblock) {
6553                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6554                                 cfg->cbb = prev;
6555                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6556                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6557                                         cfg->cbb = prev_cbb;
6558                                 }
6559                         } else {
6560                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6561                                 cfg->cbb = ebblock;
6562                         }
6563                 } else {
6564                         /*
6565                          * Its possible that the rvar is set in some prev bblock, but not in others.
6566                          * (#1835).
6567                          */
6568                         if (rvar) {
6569                                 MonoBasicBlock *bb;
6570
6571                                 for (i = 0; i < ebblock->in_count; ++i) {
6572                                         bb = ebblock->in_bb [i];
6573
6574                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6575                                                 cfg->cbb = bb;
6576
6577                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6578                                         }
6579                                 }
6580                         }
6581
6582                         cfg->cbb = ebblock;
6583                 }
6584
6585                 if (rvar) {
6586                         /*
6587                          * If the inlined method contains only a throw, then the ret var is not
6588                          * set, so set it to a dummy value.
6589                          */
6590                         if (!ret_var_set)
6591                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6592
6593                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6594                         *sp++ = ins;
6595                 }
6596                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6597                 return costs + 1;
6598         } else {
6599                 if (cfg->verbose_level > 2)
6600                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6601                 cfg->exception_type = MONO_EXCEPTION_NONE;
6602
6603                 /* This gets rid of the newly added bblocks */
6604                 cfg->cbb = prev_cbb;
6605         }
6606         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6607         return 0;
6608 }
6609
6610 /*
6611  * Some of these comments may well be out-of-date.
6612  * Design decisions: we do a single pass over the IL code (and we do bblock
6613  * splitting/merging in the few cases when it's required: a back jump to an IL
6614  * address that was not already seen as bblock starting point).
6615  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6616  * Complex operations are decomposed in simpler ones right away. We need to let the
6617  * arch-specific code peek and poke inside this process somehow (except when the
6618  * optimizations can take advantage of the full semantic info of coarse opcodes).
6619  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6620  * MonoInst->opcode initially is the IL opcode or some simplification of that
6621  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6622  * opcode with value bigger than OP_LAST.
6623  * At this point the IR can be handed over to an interpreter, a dumb code generator
6624  * or to the optimizing code generator that will translate it to SSA form.
6625  *
6626  * Profiling directed optimizations.
6627  * We may compile by default with few or no optimizations and instrument the code
6628  * or the user may indicate what methods to optimize the most either in a config file
6629  * or through repeated runs where the compiler applies offline the optimizations to
6630  * each method and then decides if it was worth it.
6631  */
6632
6633 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6634 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6635 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6636 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6637 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6638 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6639 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6640 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6641
6642 /* offset from br.s -> br like opcodes */
6643 #define BIG_BRANCH_OFFSET 13
6644
6645 static gboolean
6646 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6647 {
6648         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6649
6650         return b == NULL || b == bb;
6651 }
6652
6653 static int
6654 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6655 {
6656         unsigned char *ip = start;
6657         unsigned char *target;
6658         int i;
6659         guint cli_addr;
6660         MonoBasicBlock *bblock;
6661         const MonoOpcode *opcode;
6662
6663         while (ip < end) {
6664                 cli_addr = ip - start;
6665                 i = mono_opcode_value ((const guint8 **)&ip, end);
6666                 if (i < 0)
6667                         UNVERIFIED;
6668                 opcode = &mono_opcodes [i];
6669                 switch (opcode->argument) {
6670                 case MonoInlineNone:
6671                         ip++;
6672                         break;
6673                 case MonoInlineString:
6674                 case MonoInlineType:
6675                 case MonoInlineField:
6676                 case MonoInlineMethod:
6677                 case MonoInlineTok:
6678                 case MonoInlineSig:
6679                 case MonoShortInlineR:
6680                 case MonoInlineI:
6681                         ip += 5;
6682                         break;
6683                 case MonoInlineVar:
6684                         ip += 3;
6685                         break;
6686                 case MonoShortInlineVar:
6687                 case MonoShortInlineI:
6688                         ip += 2;
6689                         break;
6690                 case MonoShortInlineBrTarget:
6691                         target = start + cli_addr + 2 + (signed char)ip [1];
6692                         GET_BBLOCK (cfg, bblock, target);
6693                         ip += 2;
6694                         if (ip < end)
6695                                 GET_BBLOCK (cfg, bblock, ip);
6696                         break;
6697                 case MonoInlineBrTarget:
6698                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6699                         GET_BBLOCK (cfg, bblock, target);
6700                         ip += 5;
6701                         if (ip < end)
6702                                 GET_BBLOCK (cfg, bblock, ip);
6703                         break;
6704                 case MonoInlineSwitch: {
6705                         guint32 n = read32 (ip + 1);
6706                         guint32 j;
6707                         ip += 5;
6708                         cli_addr += 5 + 4 * n;
6709                         target = start + cli_addr;
6710                         GET_BBLOCK (cfg, bblock, target);
6711
6712                         for (j = 0; j < n; ++j) {
6713                                 target = start + cli_addr + (gint32)read32 (ip);
6714                                 GET_BBLOCK (cfg, bblock, target);
6715                                 ip += 4;
6716                         }
6717                         break;
6718                 }
6719                 case MonoInlineR:
6720                 case MonoInlineI8:
6721                         ip += 9;
6722                         break;
6723                 default:
6724                         g_assert_not_reached ();
6725                 }
6726
6727                 if (i == CEE_THROW) {
6728                         unsigned char *bb_start = ip - 1;
6729
6730                         /* Find the start of the bblock containing the throw */
6731                         bblock = NULL;
6732                         while ((bb_start >= start) && !bblock) {
6733                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6734                                 bb_start --;
6735                         }
6736                         if (bblock)
6737                                 bblock->out_of_line = 1;
6738                 }
6739         }
6740         return 0;
6741 unverified:
6742 exception_exit:
6743         *pos = ip;
6744         return 1;
6745 }
6746
6747 static inline MonoMethod *
6748 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6749 {
6750         MonoMethod *method;
6751
6752         error_init (error);
6753
6754         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6755                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6756                 if (context) {
6757                         method = mono_class_inflate_generic_method_checked (method, context, error);
6758                 }
6759         } else {
6760                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6761         }
6762
6763         return method;
6764 }
6765
6766 static inline MonoMethod *
6767 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6768 {
6769         MonoError error;
6770         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6771
6772         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6773                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6774                 method = NULL;
6775         }
6776
6777         if (!method && !cfg)
6778                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6779
6780         return method;
6781 }
6782
6783 static inline MonoClass*
6784 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
6785 {
6786         MonoError error;
6787         MonoClass *klass;
6788
6789         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6790                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
6791                 if (context) {
6792                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
6793                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6794                 }
6795         } else {
6796                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
6797                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6798         }
6799         if (klass)
6800                 mono_class_init (klass);
6801         return klass;
6802 }
6803
6804 static inline MonoMethodSignature*
6805 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6806 {
6807         MonoMethodSignature *fsig;
6808
6809         error_init (error);
6810         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6811                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6812         } else {
6813                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6814                 return_val_if_nok (error, NULL);
6815         }
6816         if (context) {
6817                 fsig = mono_inflate_generic_signature(fsig, context, error);
6818         }
6819         return fsig;
6820 }
6821
6822 static MonoMethod*
6823 throw_exception (void)
6824 {
6825         static MonoMethod *method = NULL;
6826
6827         if (!method) {
6828                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6829                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6830         }
6831         g_assert (method);
6832         return method;
6833 }
6834
6835 static void
6836 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6837 {
6838         MonoMethod *thrower = throw_exception ();
6839         MonoInst *args [1];
6840
6841         EMIT_NEW_PCONST (cfg, args [0], ex);
6842         mono_emit_method_call (cfg, thrower, args, NULL);
6843 }
6844
6845 /*
6846  * Return the original method is a wrapper is specified. We can only access
6847  * the custom attributes from the original method.
6848  */
6849 static MonoMethod*
6850 get_original_method (MonoMethod *method)
6851 {
6852         if (method->wrapper_type == MONO_WRAPPER_NONE)
6853                 return method;
6854
6855         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6856         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6857                 return NULL;
6858
6859         /* in other cases we need to find the original method */
6860         return mono_marshal_method_from_wrapper (method);
6861 }
6862
6863 static void
6864 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6865 {
6866         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6867         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6868         if (ex)
6869                 emit_throw_exception (cfg, ex);
6870 }
6871
6872 static void
6873 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6874 {
6875         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6876         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6877         if (ex)
6878                 emit_throw_exception (cfg, ex);
6879 }
6880
6881 /*
6882  * Check that the IL instructions at ip are the array initialization
6883  * sequence and return the pointer to the data and the size.
6884  */
6885 static const char*
6886 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6887 {
6888         /*
6889          * newarr[System.Int32]
6890          * dup
6891          * ldtoken field valuetype ...
6892          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6893          */
6894         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6895                 MonoError error;
6896                 guint32 token = read32 (ip + 7);
6897                 guint32 field_token = read32 (ip + 2);
6898                 guint32 field_index = field_token & 0xffffff;
6899                 guint32 rva;
6900                 const char *data_ptr;
6901                 int size = 0;
6902                 MonoMethod *cmethod;
6903                 MonoClass *dummy_class;
6904                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6905                 int dummy_align;
6906
6907                 if (!field) {
6908                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6909                         return NULL;
6910                 }
6911
6912                 *out_field_token = field_token;
6913
6914                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6915                 if (!cmethod)
6916                         return NULL;
6917                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6918                         return NULL;
6919                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6920                 case MONO_TYPE_I1:
6921                 case MONO_TYPE_U1:
6922                         size = 1; break;
6923                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6924 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6925                 case MONO_TYPE_I2:
6926                 case MONO_TYPE_U2:
6927                         size = 2; break;
6928                 case MONO_TYPE_I4:
6929                 case MONO_TYPE_U4:
6930                 case MONO_TYPE_R4:
6931                         size = 4; break;
6932                 case MONO_TYPE_R8:
6933                 case MONO_TYPE_I8:
6934                 case MONO_TYPE_U8:
6935                         size = 8; break;
6936 #endif
6937                 default:
6938                         return NULL;
6939                 }
6940                 size *= len;
6941                 if (size > mono_type_size (field->type, &dummy_align))
6942                     return NULL;
6943                 *out_size = size;
6944                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6945                 if (!image_is_dynamic (method->klass->image)) {
6946                         field_index = read32 (ip + 2) & 0xffffff;
6947                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6948                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6949                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6950                         /* for aot code we do the lookup on load */
6951                         if (aot && data_ptr)
6952                                 return (const char *)GUINT_TO_POINTER (rva);
6953                 } else {
6954                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6955                         g_assert (!aot);
6956                         data_ptr = mono_field_get_data (field);
6957                 }
6958                 return data_ptr;
6959         }
6960         return NULL;
6961 }
6962
6963 static void
6964 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6965 {
6966         MonoError error;
6967         char *method_fname = mono_method_full_name (method, TRUE);
6968         char *method_code;
6969         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6970
6971         if (!header) {
6972                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6973                 mono_error_cleanup (&error);
6974         } else if (header->code_size == 0)
6975                 method_code = g_strdup ("method body is empty.");
6976         else
6977                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6978         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6979         g_free (method_fname);
6980         g_free (method_code);
6981         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6982 }
6983
6984 static void
6985 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6986 {
6987         MonoInst *ins;
6988         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6989         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6990                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6991                 /* Optimize reg-reg moves away */
6992                 /*
6993                  * Can't optimize other opcodes, since sp[0] might point to
6994                  * the last ins of a decomposed opcode.
6995                  */
6996                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6997         } else {
6998                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6999         }
7000 }
7001
7002 /*
7003  * ldloca inhibits many optimizations so try to get rid of it in common
7004  * cases.
7005  */
7006 static inline unsigned char *
7007 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7008 {
7009         int local, token;
7010         MonoClass *klass;
7011         MonoType *type;
7012
7013         if (size == 1) {
7014                 local = ip [1];
7015                 ip += 2;
7016         } else {
7017                 local = read16 (ip + 2);
7018                 ip += 4;
7019         }
7020
7021         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7022                 /* From the INITOBJ case */
7023                 token = read32 (ip + 2);
7024                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7025                 CHECK_TYPELOAD (klass);
7026                 type = mini_get_underlying_type (&klass->byval_arg);
7027                 emit_init_local (cfg, local, type, TRUE);
7028                 return ip + 6;
7029         }
7030  exception_exit:
7031         return NULL;
7032 }
7033
7034 static MonoInst*
7035 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7036 {
7037         MonoInst *icall_args [16];
7038         MonoInst *call_target, *ins, *vtable_ins;
7039         int arg_reg, this_reg, vtable_reg;
7040         gboolean is_iface = mono_class_is_interface (cmethod->klass);
7041         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7042         gboolean variant_iface = FALSE;
7043         guint32 slot;
7044         int offset;
7045         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
7046
7047         /*
7048          * In llvm-only mode, vtables contain function descriptors instead of
7049          * method addresses/trampolines.
7050          */
7051         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7052
7053         if (is_iface)
7054                 slot = mono_method_get_imt_slot (cmethod);
7055         else
7056                 slot = mono_method_get_vtable_index (cmethod);
7057
7058         this_reg = sp [0]->dreg;
7059
7060         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7061                 variant_iface = TRUE;
7062
7063         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7064                 /*
7065                  * The simplest case, a normal virtual call.
7066                  */
7067                 int slot_reg = alloc_preg (cfg);
7068                 int addr_reg = alloc_preg (cfg);
7069                 int arg_reg = alloc_preg (cfg);
7070                 MonoBasicBlock *non_null_bb;
7071
7072                 vtable_reg = alloc_preg (cfg);
7073                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7074                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7075
7076                 /* Load the vtable slot, which contains a function descriptor. */
7077                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7078
7079                 NEW_BBLOCK (cfg, non_null_bb);
7080
7081                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7082                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7083                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7084
7085                 /* Slow path */
7086                 // FIXME: Make the wrapper use the preserveall cconv
7087                 // FIXME: Use one icall per slot for small slot numbers ?
7088                 icall_args [0] = vtable_ins;
7089                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7090                 /* Make the icall return the vtable slot value to save some code space */
7091                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7092                 ins->dreg = slot_reg;
7093                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7094
7095                 /* Fastpath */
7096                 MONO_START_BB (cfg, non_null_bb);
7097                 /* Load the address + arg from the vtable slot */
7098                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7099                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7100
7101                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7102         }
7103
7104         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
7105                 /*
7106                  * A simple interface call
7107                  *
7108                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7109                  * The imt slot contains a function descriptor for a runtime function + arg.
7110                  */
7111                 int slot_reg = alloc_preg (cfg);
7112                 int addr_reg = alloc_preg (cfg);
7113                 int arg_reg = alloc_preg (cfg);
7114                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7115
7116                 vtable_reg = alloc_preg (cfg);
7117                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7118                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7119
7120                 /*
7121                  * The slot is already initialized when the vtable is created so there is no need
7122                  * to check it here.
7123                  */
7124
7125                 /* Load the imt slot, which contains a function descriptor. */
7126                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7127
7128                 /* Load the address + arg of the imt thunk from the imt slot */
7129                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7130                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7131                 /*
7132                  * IMT thunks in llvm-only mode are C functions which take an info argument
7133                  * plus the imt method and return the ftndesc to call.
7134                  */
7135                 icall_args [0] = thunk_arg_ins;
7136                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7137                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7138                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7139
7140                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7141         }
7142
7143         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
7144                 /*
7145                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7146                  * dynamically extended as more instantiations are discovered.
7147                  * This handles generic virtual methods both on classes and interfaces.
7148                  */
7149                 int slot_reg = alloc_preg (cfg);
7150                 int addr_reg = alloc_preg (cfg);
7151                 int arg_reg = alloc_preg (cfg);
7152                 int ftndesc_reg = alloc_preg (cfg);
7153                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7154                 MonoBasicBlock *slowpath_bb, *end_bb;
7155
7156                 NEW_BBLOCK (cfg, slowpath_bb);
7157                 NEW_BBLOCK (cfg, end_bb);
7158
7159                 vtable_reg = alloc_preg (cfg);
7160                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7161                 if (is_iface)
7162                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7163                 else
7164                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7165
7166                 /* Load the slot, which contains a function descriptor. */
7167                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7168
7169                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7170                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7171                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7172                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7173
7174                 /* Fastpath */
7175                 /* Same as with iface calls */
7176                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7177                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7178                 icall_args [0] = thunk_arg_ins;
7179                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7180                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7181                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7182                 ftndesc_ins->dreg = ftndesc_reg;
7183                 /*
7184                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7185                  * they don't know about yet. Fall back to the slowpath in that case.
7186                  */
7187                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7188                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7189
7190                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7191
7192                 /* Slowpath */
7193                 MONO_START_BB (cfg, slowpath_bb);
7194                 icall_args [0] = vtable_ins;
7195                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7196                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7197                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7198                 if (is_iface)
7199                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7200                 else
7201                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7202                 ftndesc_ins->dreg = ftndesc_reg;
7203                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7204
7205                 /* Common case */
7206                 MONO_START_BB (cfg, end_bb);
7207                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7208         }
7209
7210         /*
7211          * Non-optimized cases
7212          */
7213         icall_args [0] = sp [0];
7214         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7215
7216         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7217                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7218
7219         arg_reg = alloc_preg (cfg);
7220         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7221         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7222
7223         g_assert (is_gsharedvt);
7224         if (is_iface)
7225                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7226         else
7227                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7228
7229         /*
7230          * Pass the extra argument even if the callee doesn't receive it, most
7231          * calling conventions allow this.
7232          */
7233         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7234 }
7235
7236 static gboolean
7237 is_exception_class (MonoClass *klass)
7238 {
7239         while (klass) {
7240                 if (klass == mono_defaults.exception_class)
7241                         return TRUE;
7242                 klass = klass->parent;
7243         }
7244         return FALSE;
7245 }
7246
7247 /*
7248  * is_jit_optimizer_disabled:
7249  *
7250  *   Determine whenever M's assembly has a DebuggableAttribute with the
7251  * IsJITOptimizerDisabled flag set.
7252  */
7253 static gboolean
7254 is_jit_optimizer_disabled (MonoMethod *m)
7255 {
7256         MonoError error;
7257         MonoAssembly *ass = m->klass->image->assembly;
7258         MonoCustomAttrInfo* attrs;
7259         MonoClass *klass;
7260         int i;
7261         gboolean val = FALSE;
7262
7263         g_assert (ass);
7264         if (ass->jit_optimizer_disabled_inited)
7265                 return ass->jit_optimizer_disabled;
7266
7267         klass = mono_class_try_get_debuggable_attribute_class ();
7268
7269         if (!klass) {
7270                 /* Linked away */
7271                 ass->jit_optimizer_disabled = FALSE;
7272                 mono_memory_barrier ();
7273                 ass->jit_optimizer_disabled_inited = TRUE;
7274                 return FALSE;
7275         }
7276
7277         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7278         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7279         if (attrs) {
7280                 for (i = 0; i < attrs->num_attrs; ++i) {
7281                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7282                         const gchar *p;
7283                         MonoMethodSignature *sig;
7284
7285                         if (!attr->ctor || attr->ctor->klass != klass)
7286                                 continue;
7287                         /* Decode the attribute. See reflection.c */
7288                         p = (const char*)attr->data;
7289                         g_assert (read16 (p) == 0x0001);
7290                         p += 2;
7291
7292                         // FIXME: Support named parameters
7293                         sig = mono_method_signature (attr->ctor);
7294                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7295                                 continue;
7296                         /* Two boolean arguments */
7297                         p ++;
7298                         val = *p;
7299                 }
7300                 mono_custom_attrs_free (attrs);
7301         }
7302
7303         ass->jit_optimizer_disabled = val;
7304         mono_memory_barrier ();
7305         ass->jit_optimizer_disabled_inited = TRUE;
7306
7307         return val;
7308 }
7309
7310 static gboolean
7311 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7312 {
7313         gboolean supported_tail_call;
7314         int i;
7315
7316         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7317
7318         for (i = 0; i < fsig->param_count; ++i) {
7319                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7320                         /* These can point to the current method's stack */
7321                         supported_tail_call = FALSE;
7322         }
7323         if (fsig->hasthis && cmethod->klass->valuetype)
7324                 /* this might point to the current method's stack */
7325                 supported_tail_call = FALSE;
7326         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7327                 supported_tail_call = FALSE;
7328         if (cfg->method->save_lmf)
7329                 supported_tail_call = FALSE;
7330         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7331                 supported_tail_call = FALSE;
7332         if (call_opcode != CEE_CALL)
7333                 supported_tail_call = FALSE;
7334
7335         /* Debugging support */
7336 #if 0
7337         if (supported_tail_call) {
7338                 if (!mono_debug_count ())
7339                         supported_tail_call = FALSE;
7340         }
7341 #endif
7342
7343         return supported_tail_call;
7344 }
7345
7346 /*
7347  * handle_ctor_call:
7348  *
7349  *   Handle calls made to ctors from NEWOBJ opcodes.
7350  */
7351 static void
7352 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7353                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7354 {
7355         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7356
7357         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7358                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7359                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7360                         mono_class_vtable (cfg->domain, cmethod->klass);
7361                         CHECK_TYPELOAD (cmethod->klass);
7362
7363                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7364                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7365                 } else {
7366                         if (context_used) {
7367                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7368                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7369                         } else {
7370                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7371
7372                                 CHECK_TYPELOAD (cmethod->klass);
7373                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7374                         }
7375                 }
7376         }
7377
7378         /* Avoid virtual calls to ctors if possible */
7379         if (mono_class_is_marshalbyref (cmethod->klass))
7380                 callvirt_this_arg = sp [0];
7381
7382         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7383                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7384                 CHECK_CFG_EXCEPTION;
7385         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7386                            mono_method_check_inlining (cfg, cmethod) &&
7387                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7388                 int costs;
7389
7390                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7391                         cfg->real_offset += 5;
7392
7393                         *inline_costs += costs - 5;
7394                 } else {
7395                         INLINE_FAILURE ("inline failure");
7396                         // FIXME-VT: Clean this up
7397                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7398                                 GSHAREDVT_FAILURE(*ip);
7399                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7400                 }
7401         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7402                 MonoInst *addr;
7403
7404                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7405
7406                 if (cfg->llvm_only) {
7407                         // FIXME: Avoid initializing vtable_arg
7408                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7409                 } else {
7410                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7411                 }
7412         } else if (context_used &&
7413                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7414                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7415                 MonoInst *cmethod_addr;
7416
7417                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7418
7419                 if (cfg->llvm_only) {
7420                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7421                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7422                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7423                 } else {
7424                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7425                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7426
7427                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7428                 }
7429         } else {
7430                 INLINE_FAILURE ("ctor call");
7431                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7432                                                                                   callvirt_this_arg, NULL, vtable_arg);
7433         }
7434  exception_exit:
7435         return;
7436 }
7437
7438 static void
7439 emit_setret (MonoCompile *cfg, MonoInst *val)
7440 {
7441         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7442         MonoInst *ins;
7443
7444         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7445                 MonoInst *ret_addr;
7446
7447                 if (!cfg->vret_addr) {
7448                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7449                 } else {
7450                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7451
7452                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7453                         ins->klass = mono_class_from_mono_type (ret_type);
7454                 }
7455         } else {
7456 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7457                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7458                         MonoInst *iargs [1];
7459                         MonoInst *conv;
7460
7461                         iargs [0] = val;
7462                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7463                         mono_arch_emit_setret (cfg, cfg->method, conv);
7464                 } else {
7465                         mono_arch_emit_setret (cfg, cfg->method, val);
7466                 }
7467 #else
7468                 mono_arch_emit_setret (cfg, cfg->method, val);
7469 #endif
7470         }
7471 }
7472
7473 /*
7474  * mono_method_to_ir:
7475  *
7476  * Translate the .net IL into linear IR.
7477  *
7478  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7479  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7480  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7481  * @inline_args: if not NULL, contains the arguments to the inline call
7482  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7483  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7484  *
7485  * This method is used to turn ECMA IL into Mono's internal Linear IR
7486  * reprensetation.  It is used both for entire methods, as well as
7487  * inlining existing methods.  In the former case, the @start_bblock,
7488  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7489  * inline_offset is set to zero.
7490  *
7491  * Returns: the inline cost, or -1 if there was an error processing this method.
7492  */
7493 int
7494 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7495                    MonoInst *return_var, MonoInst **inline_args,
7496                    guint inline_offset, gboolean is_virtual_call)
7497 {
7498         MonoError error;
7499         MonoInst *ins, **sp, **stack_start;
7500         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7501         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7502         MonoMethod *cmethod, *method_definition;
7503         MonoInst **arg_array;
7504         MonoMethodHeader *header;
7505         MonoImage *image;
7506         guint32 token, ins_flag;
7507         MonoClass *klass;
7508         MonoClass *constrained_class = NULL;
7509         unsigned char *ip, *end, *target, *err_pos;
7510         MonoMethodSignature *sig;
7511         MonoGenericContext *generic_context = NULL;
7512         MonoGenericContainer *generic_container = NULL;
7513         MonoType **param_types;
7514         int i, n, start_new_bblock, dreg;
7515         int num_calls = 0, inline_costs = 0;
7516         int breakpoint_id = 0;
7517         guint num_args;
7518         GSList *class_inits = NULL;
7519         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7520         int context_used;
7521         gboolean init_locals, seq_points, skip_dead_blocks;
7522         gboolean sym_seq_points = FALSE;
7523         MonoDebugMethodInfo *minfo;
7524         MonoBitSet *seq_point_locs = NULL;
7525         MonoBitSet *seq_point_set_locs = NULL;
7526
7527         cfg->disable_inline = is_jit_optimizer_disabled (method);
7528
7529         /* serialization and xdomain stuff may need access to private fields and methods */
7530         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7531         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7532         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7533         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7534         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7535         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7536
7537         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7538         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7539         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7540         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7541         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7542
7543         image = method->klass->image;
7544         header = mono_method_get_header_checked (method, &cfg->error);
7545         if (!header) {
7546                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7547                 goto exception_exit;
7548         } else {
7549                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7550         }
7551
7552         generic_container = mono_method_get_generic_container (method);
7553         sig = mono_method_signature (method);
7554         num_args = sig->hasthis + sig->param_count;
7555         ip = (unsigned char*)header->code;
7556         cfg->cil_start = ip;
7557         end = ip + header->code_size;
7558         cfg->stat_cil_code_size += header->code_size;
7559
7560         seq_points = cfg->gen_seq_points && cfg->method == method;
7561
7562         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7563                 /* We could hit a seq point before attaching to the JIT (#8338) */
7564                 seq_points = FALSE;
7565         }
7566
7567         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7568                 minfo = mono_debug_lookup_method (method);
7569                 if (minfo) {
7570                         MonoSymSeqPoint *sps;
7571                         int i, n_il_offsets;
7572
7573                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7574                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7575                         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);
7576                         sym_seq_points = TRUE;
7577                         for (i = 0; i < n_il_offsets; ++i) {
7578                                 if (sps [i].il_offset < header->code_size)
7579                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7580                         }
7581                         g_free (sps);
7582
7583                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7584                         if (asyncMethod) {
7585                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7586                                 {
7587                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7588                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7589                                 }
7590                                 mono_debug_free_method_async_debug_info (asyncMethod);
7591                         }
7592                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7593                         /* Methods without line number info like auto-generated property accessors */
7594                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7595                         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);
7596                         sym_seq_points = TRUE;
7597                 }
7598         }
7599
7600         /*
7601          * Methods without init_locals set could cause asserts in various passes
7602          * (#497220). To work around this, we emit dummy initialization opcodes
7603          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7604          * on some platforms.
7605          */
7606         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7607                 init_locals = header->init_locals;
7608         else
7609                 init_locals = TRUE;
7610
7611         method_definition = method;
7612         while (method_definition->is_inflated) {
7613                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7614                 method_definition = imethod->declaring;
7615         }
7616
7617         /* SkipVerification is not allowed if core-clr is enabled */
7618         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7619                 dont_verify = TRUE;
7620                 dont_verify_stloc = TRUE;
7621         }
7622
7623         if (sig->is_inflated)
7624                 generic_context = mono_method_get_context (method);
7625         else if (generic_container)
7626                 generic_context = &generic_container->context;
7627         cfg->generic_context = generic_context;
7628
7629         if (!cfg->gshared)
7630                 g_assert (!sig->has_type_parameters);
7631
7632         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7633                 g_assert (method->is_inflated);
7634                 g_assert (mono_method_get_context (method)->method_inst);
7635         }
7636         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7637                 g_assert (sig->generic_param_count);
7638
7639         if (cfg->method == method) {
7640                 cfg->real_offset = 0;
7641         } else {
7642                 cfg->real_offset = inline_offset;
7643         }
7644
7645         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7646         cfg->cil_offset_to_bb_len = header->code_size;
7647
7648         cfg->current_method = method;
7649
7650         if (cfg->verbose_level > 2)
7651                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7652
7653         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7654         if (sig->hasthis)
7655                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7656         for (n = 0; n < sig->param_count; ++n)
7657                 param_types [n + sig->hasthis] = sig->params [n];
7658         cfg->arg_types = param_types;
7659
7660         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7661         if (cfg->method == method) {
7662
7663                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7664                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7665
7666                 /* ENTRY BLOCK */
7667                 NEW_BBLOCK (cfg, start_bblock);
7668                 cfg->bb_entry = start_bblock;
7669                 start_bblock->cil_code = NULL;
7670                 start_bblock->cil_length = 0;
7671
7672                 /* EXIT BLOCK */
7673                 NEW_BBLOCK (cfg, end_bblock);
7674                 cfg->bb_exit = end_bblock;
7675                 end_bblock->cil_code = NULL;
7676                 end_bblock->cil_length = 0;
7677                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7678                 g_assert (cfg->num_bblocks == 2);
7679
7680                 arg_array = cfg->args;
7681
7682                 if (header->num_clauses) {
7683                         cfg->spvars = g_hash_table_new (NULL, NULL);
7684                         cfg->exvars = g_hash_table_new (NULL, NULL);
7685                 }
7686                 /* handle exception clauses */
7687                 for (i = 0; i < header->num_clauses; ++i) {
7688                         MonoBasicBlock *try_bb;
7689                         MonoExceptionClause *clause = &header->clauses [i];
7690                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7691
7692                         try_bb->real_offset = clause->try_offset;
7693                         try_bb->try_start = TRUE;
7694                         try_bb->region = ((i + 1) << 8) | clause->flags;
7695                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7696                         tblock->real_offset = clause->handler_offset;
7697                         tblock->flags |= BB_EXCEPTION_HANDLER;
7698
7699                         /*
7700                          * Linking the try block with the EH block hinders inlining as we won't be able to
7701                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7702                          */
7703                         if (COMPILE_LLVM (cfg))
7704                                 link_bblock (cfg, try_bb, tblock);
7705
7706                         if (*(ip + clause->handler_offset) == CEE_POP)
7707                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7708
7709                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7710                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7711                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7712                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7713                                 MONO_ADD_INS (tblock, ins);
7714
7715                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7716                                         /* finally clauses already have a seq point */
7717                                         /* seq points for filter clauses are emitted below */
7718                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7719                                         MONO_ADD_INS (tblock, ins);
7720                                 }
7721
7722                                 /* todo: is a fault block unsafe to optimize? */
7723                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7724                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7725                         }
7726
7727                         /*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);
7728                           while (p < end) {
7729                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7730                           }*/
7731                         /* catch and filter blocks get the exception object on the stack */
7732                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7733                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7734
7735                                 /* mostly like handle_stack_args (), but just sets the input args */
7736                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7737                                 tblock->in_scount = 1;
7738                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7739                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7740
7741                                 cfg->cbb = tblock;
7742
7743 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7744                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7745                                 if (!cfg->compile_llvm) {
7746                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7747                                         ins->dreg = tblock->in_stack [0]->dreg;
7748                                         MONO_ADD_INS (tblock, ins);
7749                                 }
7750 #else
7751                                 MonoInst *dummy_use;
7752
7753                                 /*
7754                                  * Add a dummy use for the exvar so its liveness info will be
7755                                  * correct.
7756                                  */
7757                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7758 #endif
7759
7760                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7761                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7762                                         MONO_ADD_INS (tblock, ins);
7763                                 }
7764
7765                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7766                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7767                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7768                                         tblock->real_offset = clause->data.filter_offset;
7769                                         tblock->in_scount = 1;
7770                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7771                                         /* The filter block shares the exvar with the handler block */
7772                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7773                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7774                                         MONO_ADD_INS (tblock, ins);
7775                                 }
7776                         }
7777
7778                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7779                                         clause->data.catch_class &&
7780                                         cfg->gshared &&
7781                                         mono_class_check_context_used (clause->data.catch_class)) {
7782                                 /*
7783                                  * In shared generic code with catch
7784                                  * clauses containing type variables
7785                                  * the exception handling code has to
7786                                  * be able to get to the rgctx.
7787                                  * Therefore we have to make sure that
7788                                  * the vtable/mrgctx argument (for
7789                                  * static or generic methods) or the
7790                                  * "this" argument (for non-static
7791                                  * methods) are live.
7792                                  */
7793                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7794                                                 mini_method_get_context (method)->method_inst ||
7795                                                 method->klass->valuetype) {
7796                                         mono_get_vtable_var (cfg);
7797                                 } else {
7798                                         MonoInst *dummy_use;
7799
7800                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7801                                 }
7802                         }
7803                 }
7804         } else {
7805                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7806                 cfg->cbb = start_bblock;
7807                 cfg->args = arg_array;
7808                 mono_save_args (cfg, sig, inline_args);
7809         }
7810
7811         /* FIRST CODE BLOCK */
7812         NEW_BBLOCK (cfg, tblock);
7813         tblock->cil_code = ip;
7814         cfg->cbb = tblock;
7815         cfg->ip = ip;
7816
7817         ADD_BBLOCK (cfg, tblock);
7818
7819         if (cfg->method == method) {
7820                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7821                 if (breakpoint_id) {
7822                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7823                         MONO_ADD_INS (cfg->cbb, ins);
7824                 }
7825         }
7826
7827         /* we use a separate basic block for the initialization code */
7828         NEW_BBLOCK (cfg, init_localsbb);
7829         if (cfg->method == method)
7830                 cfg->bb_init = init_localsbb;
7831         init_localsbb->real_offset = cfg->real_offset;
7832         start_bblock->next_bb = init_localsbb;
7833         init_localsbb->next_bb = cfg->cbb;
7834         link_bblock (cfg, start_bblock, init_localsbb);
7835         link_bblock (cfg, init_localsbb, cfg->cbb);
7836
7837         cfg->cbb = init_localsbb;
7838
7839         if (cfg->gsharedvt && cfg->method == method) {
7840                 MonoGSharedVtMethodInfo *info;
7841                 MonoInst *var, *locals_var;
7842                 int dreg;
7843
7844                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7845                 info->method = cfg->method;
7846                 info->count_entries = 16;
7847                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7848                 cfg->gsharedvt_info = info;
7849
7850                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7851                 /* prevent it from being register allocated */
7852                 //var->flags |= MONO_INST_VOLATILE;
7853                 cfg->gsharedvt_info_var = var;
7854
7855                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7856                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7857
7858                 /* Allocate locals */
7859                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7860                 /* prevent it from being register allocated */
7861                 //locals_var->flags |= MONO_INST_VOLATILE;
7862                 cfg->gsharedvt_locals_var = locals_var;
7863
7864                 dreg = alloc_ireg (cfg);
7865                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7866
7867                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7868                 ins->dreg = locals_var->dreg;
7869                 ins->sreg1 = dreg;
7870                 MONO_ADD_INS (cfg->cbb, ins);
7871                 cfg->gsharedvt_locals_var_ins = ins;
7872
7873                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7874                 /*
7875                 if (init_locals)
7876                         ins->flags |= MONO_INST_INIT;
7877                 */
7878         }
7879
7880         if (mono_security_core_clr_enabled ()) {
7881                 /* check if this is native code, e.g. an icall or a p/invoke */
7882                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7883                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7884                         if (wrapped) {
7885                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7886                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7887
7888                                 /* if this ia a native call then it can only be JITted from platform code */
7889                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7890                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7891                                                 MonoException *ex = icall ? mono_get_exception_security () :
7892                                                         mono_get_exception_method_access ();
7893                                                 emit_throw_exception (cfg, ex);
7894                                         }
7895                                 }
7896                         }
7897                 }
7898         }
7899
7900         CHECK_CFG_EXCEPTION;
7901
7902         if (header->code_size == 0)
7903                 UNVERIFIED;
7904
7905         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7906                 ip = err_pos;
7907                 UNVERIFIED;
7908         }
7909
7910         if (cfg->method == method)
7911                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7912
7913         for (n = 0; n < header->num_locals; ++n) {
7914                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7915                         UNVERIFIED;
7916         }
7917         class_inits = NULL;
7918
7919         /* We force the vtable variable here for all shared methods
7920            for the possibility that they might show up in a stack
7921            trace where their exact instantiation is needed. */
7922         if (cfg->gshared && method == cfg->method) {
7923                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7924                                 mini_method_get_context (method)->method_inst ||
7925                                 method->klass->valuetype) {
7926                         mono_get_vtable_var (cfg);
7927                 } else {
7928                         /* FIXME: Is there a better way to do this?
7929                            We need the variable live for the duration
7930                            of the whole method. */
7931                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7932                 }
7933         }
7934
7935         /* add a check for this != NULL to inlined methods */
7936         if (is_virtual_call) {
7937                 MonoInst *arg_ins;
7938
7939                 NEW_ARGLOAD (cfg, arg_ins, 0);
7940                 MONO_ADD_INS (cfg->cbb, arg_ins);
7941                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7942         }
7943
7944         skip_dead_blocks = !dont_verify;
7945         if (skip_dead_blocks) {
7946                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7947                 CHECK_CFG_ERROR;
7948                 g_assert (bb);
7949         }
7950
7951         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7952         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7953
7954         ins_flag = 0;
7955         start_new_bblock = 0;
7956         while (ip < end) {
7957                 if (cfg->method == method)
7958                         cfg->real_offset = ip - header->code;
7959                 else
7960                         cfg->real_offset = inline_offset;
7961                 cfg->ip = ip;
7962
7963                 context_used = 0;
7964
7965                 if (start_new_bblock) {
7966                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7967                         if (start_new_bblock == 2) {
7968                                 g_assert (ip == tblock->cil_code);
7969                         } else {
7970                                 GET_BBLOCK (cfg, tblock, ip);
7971                         }
7972                         cfg->cbb->next_bb = tblock;
7973                         cfg->cbb = tblock;
7974                         start_new_bblock = 0;
7975                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7976                                 if (cfg->verbose_level > 3)
7977                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7978                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7979                                 *sp++ = ins;
7980                         }
7981                         if (class_inits)
7982                                 g_slist_free (class_inits);
7983                         class_inits = NULL;
7984                 } else {
7985                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7986                                 link_bblock (cfg, cfg->cbb, tblock);
7987                                 if (sp != stack_start) {
7988                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7989                                         sp = stack_start;
7990                                         CHECK_UNVERIFIABLE (cfg);
7991                                 }
7992                                 cfg->cbb->next_bb = tblock;
7993                                 cfg->cbb = tblock;
7994                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7995                                         if (cfg->verbose_level > 3)
7996                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7997                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7998                                         *sp++ = ins;
7999                                 }
8000                                 g_slist_free (class_inits);
8001                                 class_inits = NULL;
8002                         }
8003                 }
8004
8005                 if (skip_dead_blocks) {
8006                         int ip_offset = ip - header->code;
8007
8008                         if (ip_offset == bb->end)
8009                                 bb = bb->next;
8010
8011                         if (bb->dead) {
8012                                 int op_size = mono_opcode_size (ip, end);
8013                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8014
8015                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8016
8017                                 if (ip_offset + op_size == bb->end) {
8018                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8019                                         MONO_ADD_INS (cfg->cbb, ins);
8020                                         start_new_bblock = 1;
8021                                 }
8022
8023                                 ip += op_size;
8024                                 continue;
8025                         }
8026                 }
8027                 /*
8028                  * Sequence points are points where the debugger can place a breakpoint.
8029                  * Currently, we generate these automatically at points where the IL
8030                  * stack is empty.
8031                  */
8032                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8033                         /*
8034                          * Make methods interruptable at the beginning, and at the targets of
8035                          * backward branches.
8036                          * Also, do this at the start of every bblock in methods with clauses too,
8037                          * to be able to handle instructions with inprecise control flow like
8038                          * throw/endfinally.
8039                          * Backward branches are handled at the end of method-to-ir ().
8040                          */
8041                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8042                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8043
8044                         /* Avoid sequence points on empty IL like .volatile */
8045                         // FIXME: Enable this
8046                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8047                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8048                         if ((sp != stack_start) && !sym_seq_point)
8049                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8050                         MONO_ADD_INS (cfg->cbb, ins);
8051
8052                         if (sym_seq_points)
8053                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8054                 }
8055
8056                 cfg->cbb->real_offset = cfg->real_offset;
8057
8058                 if ((cfg->method == method) && cfg->coverage_info) {
8059                         guint32 cil_offset = ip - header->code;
8060                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8061
8062                         /* TODO: Use an increment here */
8063 #if defined(TARGET_X86)
8064                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8065                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8066                         ins->inst_imm = 1;
8067                         MONO_ADD_INS (cfg->cbb, ins);
8068 #else
8069                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8070                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8071 #endif
8072                 }
8073
8074                 if (cfg->verbose_level > 3)
8075                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8076
8077                 switch (*ip) {
8078                 case CEE_NOP:
8079                         if (seq_points && !sym_seq_points && sp != stack_start) {
8080                                 /*
8081                                  * The C# compiler uses these nops to notify the JIT that it should
8082                                  * insert seq points.
8083                                  */
8084                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8085                                 MONO_ADD_INS (cfg->cbb, ins);
8086                         }
8087                         if (cfg->keep_cil_nops)
8088                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8089                         else
8090                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8091                         ip++;
8092                         MONO_ADD_INS (cfg->cbb, ins);
8093                         break;
8094                 case CEE_BREAK:
8095                         if (should_insert_brekpoint (cfg->method)) {
8096                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8097                         } else {
8098                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8099                         }
8100                         ip++;
8101                         MONO_ADD_INS (cfg->cbb, ins);
8102                         break;
8103                 case CEE_LDARG_0:
8104                 case CEE_LDARG_1:
8105                 case CEE_LDARG_2:
8106                 case CEE_LDARG_3:
8107                         CHECK_STACK_OVF (1);
8108                         n = (*ip)-CEE_LDARG_0;
8109                         CHECK_ARG (n);
8110                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8111                         ip++;
8112                         *sp++ = ins;
8113                         break;
8114                 case CEE_LDLOC_0:
8115                 case CEE_LDLOC_1:
8116                 case CEE_LDLOC_2:
8117                 case CEE_LDLOC_3:
8118                         CHECK_STACK_OVF (1);
8119                         n = (*ip)-CEE_LDLOC_0;
8120                         CHECK_LOCAL (n);
8121                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8122                         ip++;
8123                         *sp++ = ins;
8124                         break;
8125                 case CEE_STLOC_0:
8126                 case CEE_STLOC_1:
8127                 case CEE_STLOC_2:
8128                 case CEE_STLOC_3: {
8129                         CHECK_STACK (1);
8130                         n = (*ip)-CEE_STLOC_0;
8131                         CHECK_LOCAL (n);
8132                         --sp;
8133                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8134                                 UNVERIFIED;
8135                         emit_stloc_ir (cfg, sp, header, n);
8136                         ++ip;
8137                         inline_costs += 1;
8138                         break;
8139                         }
8140                 case CEE_LDARG_S:
8141                         CHECK_OPSIZE (2);
8142                         CHECK_STACK_OVF (1);
8143                         n = ip [1];
8144                         CHECK_ARG (n);
8145                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8146                         *sp++ = ins;
8147                         ip += 2;
8148                         break;
8149                 case CEE_LDARGA_S:
8150                         CHECK_OPSIZE (2);
8151                         CHECK_STACK_OVF (1);
8152                         n = ip [1];
8153                         CHECK_ARG (n);
8154                         NEW_ARGLOADA (cfg, ins, n);
8155                         MONO_ADD_INS (cfg->cbb, ins);
8156                         *sp++ = ins;
8157                         ip += 2;
8158                         break;
8159                 case CEE_STARG_S:
8160                         CHECK_OPSIZE (2);
8161                         CHECK_STACK (1);
8162                         --sp;
8163                         n = ip [1];
8164                         CHECK_ARG (n);
8165                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8166                                 UNVERIFIED;
8167                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8168                         ip += 2;
8169                         break;
8170                 case CEE_LDLOC_S:
8171                         CHECK_OPSIZE (2);
8172                         CHECK_STACK_OVF (1);
8173                         n = ip [1];
8174                         CHECK_LOCAL (n);
8175                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8176                         *sp++ = ins;
8177                         ip += 2;
8178                         break;
8179                 case CEE_LDLOCA_S: {
8180                         unsigned char *tmp_ip;
8181                         CHECK_OPSIZE (2);
8182                         CHECK_STACK_OVF (1);
8183                         CHECK_LOCAL (ip [1]);
8184
8185                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8186                                 ip = tmp_ip;
8187                                 inline_costs += 1;
8188                                 break;
8189                         }
8190
8191                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8192                         *sp++ = ins;
8193                         ip += 2;
8194                         break;
8195                 }
8196                 case CEE_STLOC_S:
8197                         CHECK_OPSIZE (2);
8198                         CHECK_STACK (1);
8199                         --sp;
8200                         CHECK_LOCAL (ip [1]);
8201                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8202                                 UNVERIFIED;
8203                         emit_stloc_ir (cfg, sp, header, ip [1]);
8204                         ip += 2;
8205                         inline_costs += 1;
8206                         break;
8207                 case CEE_LDNULL:
8208                         CHECK_STACK_OVF (1);
8209                         EMIT_NEW_PCONST (cfg, ins, NULL);
8210                         ins->type = STACK_OBJ;
8211                         ++ip;
8212                         *sp++ = ins;
8213                         break;
8214                 case CEE_LDC_I4_M1:
8215                         CHECK_STACK_OVF (1);
8216                         EMIT_NEW_ICONST (cfg, ins, -1);
8217                         ++ip;
8218                         *sp++ = ins;
8219                         break;
8220                 case CEE_LDC_I4_0:
8221                 case CEE_LDC_I4_1:
8222                 case CEE_LDC_I4_2:
8223                 case CEE_LDC_I4_3:
8224                 case CEE_LDC_I4_4:
8225                 case CEE_LDC_I4_5:
8226                 case CEE_LDC_I4_6:
8227                 case CEE_LDC_I4_7:
8228                 case CEE_LDC_I4_8:
8229                         CHECK_STACK_OVF (1);
8230                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8231                         ++ip;
8232                         *sp++ = ins;
8233                         break;
8234                 case CEE_LDC_I4_S:
8235                         CHECK_OPSIZE (2);
8236                         CHECK_STACK_OVF (1);
8237                         ++ip;
8238                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8239                         ++ip;
8240                         *sp++ = ins;
8241                         break;
8242                 case CEE_LDC_I4:
8243                         CHECK_OPSIZE (5);
8244                         CHECK_STACK_OVF (1);
8245                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8246                         ip += 5;
8247                         *sp++ = ins;
8248                         break;
8249                 case CEE_LDC_I8:
8250                         CHECK_OPSIZE (9);
8251                         CHECK_STACK_OVF (1);
8252                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8253                         ins->type = STACK_I8;
8254                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8255                         ++ip;
8256                         ins->inst_l = (gint64)read64 (ip);
8257                         MONO_ADD_INS (cfg->cbb, ins);
8258                         ip += 8;
8259                         *sp++ = ins;
8260                         break;
8261                 case CEE_LDC_R4: {
8262                         float *f;
8263                         gboolean use_aotconst = FALSE;
8264
8265 #ifdef TARGET_POWERPC
8266                         /* FIXME: Clean this up */
8267                         if (cfg->compile_aot)
8268                                 use_aotconst = TRUE;
8269 #endif
8270
8271                         /* FIXME: we should really allocate this only late in the compilation process */
8272                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8273                         CHECK_OPSIZE (5);
8274                         CHECK_STACK_OVF (1);
8275
8276                         if (use_aotconst) {
8277                                 MonoInst *cons;
8278                                 int dreg;
8279
8280                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8281
8282                                 dreg = alloc_freg (cfg);
8283                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8284                                 ins->type = cfg->r4_stack_type;
8285                         } else {
8286                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8287                                 ins->type = cfg->r4_stack_type;
8288                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8289                                 ins->inst_p0 = f;
8290                                 MONO_ADD_INS (cfg->cbb, ins);
8291                         }
8292                         ++ip;
8293                         readr4 (ip, f);
8294                         ip += 4;
8295                         *sp++ = ins;
8296                         break;
8297                 }
8298                 case CEE_LDC_R8: {
8299                         double *d;
8300                         gboolean use_aotconst = FALSE;
8301
8302 #ifdef TARGET_POWERPC
8303                         /* FIXME: Clean this up */
8304                         if (cfg->compile_aot)
8305                                 use_aotconst = TRUE;
8306 #endif
8307
8308                         /* FIXME: we should really allocate this only late in the compilation process */
8309                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8310                         CHECK_OPSIZE (9);
8311                         CHECK_STACK_OVF (1);
8312
8313                         if (use_aotconst) {
8314                                 MonoInst *cons;
8315                                 int dreg;
8316
8317                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8318
8319                                 dreg = alloc_freg (cfg);
8320                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8321                                 ins->type = STACK_R8;
8322                         } else {
8323                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8324                                 ins->type = STACK_R8;
8325                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8326                                 ins->inst_p0 = d;
8327                                 MONO_ADD_INS (cfg->cbb, ins);
8328                         }
8329                         ++ip;
8330                         readr8 (ip, d);
8331                         ip += 8;
8332                         *sp++ = ins;
8333                         break;
8334                 }
8335                 case CEE_DUP: {
8336                         MonoInst *temp, *store;
8337                         CHECK_STACK (1);
8338                         CHECK_STACK_OVF (1);
8339                         sp--;
8340                         ins = *sp;
8341
8342                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8343                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8344
8345                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8346                         *sp++ = ins;
8347
8348                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8349                         *sp++ = ins;
8350
8351                         ++ip;
8352                         inline_costs += 2;
8353                         break;
8354                 }
8355                 case CEE_POP:
8356                         CHECK_STACK (1);
8357                         ip++;
8358                         --sp;
8359
8360 #ifdef TARGET_X86
8361                         if (sp [0]->type == STACK_R8)
8362                                 /* we need to pop the value from the x86 FP stack */
8363                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8364 #endif
8365                         break;
8366                 case CEE_JMP: {
8367                         MonoCallInst *call;
8368                         MonoMethodSignature *fsig;
8369                         int i, n;
8370
8371                         INLINE_FAILURE ("jmp");
8372                         GSHAREDVT_FAILURE (*ip);
8373
8374                         CHECK_OPSIZE (5);
8375                         if (stack_start != sp)
8376                                 UNVERIFIED;
8377                         token = read32 (ip + 1);
8378                         /* FIXME: check the signature matches */
8379                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8380                         CHECK_CFG_ERROR;
8381
8382                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8383                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8384
8385                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8386
8387                         fsig = mono_method_signature (cmethod);
8388                         n = fsig->param_count + fsig->hasthis;
8389                         if (cfg->llvm_only) {
8390                                 MonoInst **args;
8391
8392                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8393                                 for (i = 0; i < n; ++i)
8394                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8395                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8396                                 /*
8397                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8398                                  * have to emit a normal return since llvm expects it.
8399                                  */
8400                                 if (cfg->ret)
8401                                         emit_setret (cfg, ins);
8402                                 MONO_INST_NEW (cfg, ins, OP_BR);
8403                                 ins->inst_target_bb = end_bblock;
8404                                 MONO_ADD_INS (cfg->cbb, ins);
8405                                 link_bblock (cfg, cfg->cbb, end_bblock);
8406                                 ip += 5;
8407                                 break;
8408                         } else if (cfg->backend->have_op_tail_call) {
8409                                 /* Handle tail calls similarly to calls */
8410                                 DISABLE_AOT (cfg);
8411
8412                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8413                                 call->method = cmethod;
8414                                 call->tail_call = TRUE;
8415                                 call->signature = mono_method_signature (cmethod);
8416                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8417                                 call->inst.inst_p0 = cmethod;
8418                                 for (i = 0; i < n; ++i)
8419                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8420
8421                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8422                                         call->vret_var = cfg->vret_addr;
8423
8424                                 mono_arch_emit_call (cfg, call);
8425                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8426                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8427                         } else {
8428                                 for (i = 0; i < num_args; ++i)
8429                                         /* Prevent arguments from being optimized away */
8430                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8431
8432                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8433                                 ins = (MonoInst*)call;
8434                                 ins->inst_p0 = cmethod;
8435                                 MONO_ADD_INS (cfg->cbb, ins);
8436                         }
8437
8438                         ip += 5;
8439                         start_new_bblock = 1;
8440                         break;
8441                 }
8442                 case CEE_CALLI: {
8443                         MonoInst *addr;
8444                         MonoMethodSignature *fsig;
8445
8446                         CHECK_OPSIZE (5);
8447                         token = read32 (ip + 1);
8448
8449                         ins = NULL;
8450
8451                         //GSHAREDVT_FAILURE (*ip);
8452                         cmethod = NULL;
8453                         CHECK_STACK (1);
8454                         --sp;
8455                         addr = *sp;
8456                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8457                         CHECK_CFG_ERROR;
8458
8459                         if (method->dynamic && fsig->pinvoke) {
8460                                 MonoInst *args [3];
8461
8462                                 /*
8463                                  * This is a call through a function pointer using a pinvoke
8464                                  * signature. Have to create a wrapper and call that instead.
8465                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8466                                  * instead based on the signature.
8467                                  */
8468                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8469                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8470                                 args [2] = addr;
8471                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8472                         }
8473
8474                         n = fsig->param_count + fsig->hasthis;
8475
8476                         CHECK_STACK (n);
8477
8478                         //g_assert (!virtual_ || fsig->hasthis);
8479
8480                         sp -= n;
8481
8482                         inline_costs += 10 * num_calls++;
8483
8484                         /*
8485                          * Making generic calls out of gsharedvt methods.
8486                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8487                          * patching gshared method addresses into a gsharedvt method.
8488                          */
8489                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8490                                 /*
8491                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8492                                  */
8493                                 MonoInst *callee = addr;
8494
8495                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8496                                         /* Not tested */
8497                                         GSHAREDVT_FAILURE (*ip);
8498
8499                                 if (cfg->llvm_only)
8500                                         // FIXME:
8501                                         GSHAREDVT_FAILURE (*ip);
8502
8503                                 addr = emit_get_rgctx_sig (cfg, context_used,
8504                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8505                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8506                                 goto calli_end;
8507                         }
8508
8509                         /* Prevent inlining of methods with indirect calls */
8510                         INLINE_FAILURE ("indirect call");
8511
8512                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8513                                 MonoJumpInfoType info_type;
8514                                 gpointer info_data;
8515
8516                                 /*
8517                                  * Instead of emitting an indirect call, emit a direct call
8518                                  * with the contents of the aotconst as the patch info.
8519                                  */
8520                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8521                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8522                                         info_data = addr->inst_p0;
8523                                 } else {
8524                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8525                                         info_data = addr->inst_right->inst_left;
8526                                 }
8527
8528                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8529                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8530                                         NULLIFY_INS (addr);
8531                                         goto calli_end;
8532                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8533                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8534                                         NULLIFY_INS (addr);
8535                                         goto calli_end;
8536                                 }
8537                         }
8538                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8539
8540                         calli_end:
8541
8542                         /* End of call, INS should contain the result of the call, if any */
8543
8544                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8545                                 g_assert (ins);
8546                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8547                         }
8548
8549                         CHECK_CFG_EXCEPTION;
8550
8551                         ip += 5;
8552                         ins_flag = 0;
8553                         constrained_class = NULL;
8554                         break;
8555                 }
8556                 case CEE_CALL:
8557                 case CEE_CALLVIRT: {
8558                         MonoInst *addr = NULL;
8559                         MonoMethodSignature *fsig = NULL;
8560                         int array_rank = 0;
8561                         int virtual_ = *ip == CEE_CALLVIRT;
8562                         gboolean pass_imt_from_rgctx = FALSE;
8563                         MonoInst *imt_arg = NULL;
8564                         MonoInst *keep_this_alive = NULL;
8565                         gboolean pass_vtable = FALSE;
8566                         gboolean pass_mrgctx = FALSE;
8567                         MonoInst *vtable_arg = NULL;
8568                         gboolean check_this = FALSE;
8569                         gboolean supported_tail_call = FALSE;
8570                         gboolean tail_call = FALSE;
8571                         gboolean need_seq_point = FALSE;
8572                         guint32 call_opcode = *ip;
8573                         gboolean emit_widen = TRUE;
8574                         gboolean push_res = TRUE;
8575                         gboolean skip_ret = FALSE;
8576                         gboolean delegate_invoke = FALSE;
8577                         gboolean direct_icall = FALSE;
8578                         gboolean constrained_partial_call = FALSE;
8579                         MonoMethod *cil_method;
8580
8581                         CHECK_OPSIZE (5);
8582                         token = read32 (ip + 1);
8583
8584                         ins = NULL;
8585
8586                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8587                         CHECK_CFG_ERROR;
8588
8589                         cil_method = cmethod;
8590
8591                         if (constrained_class) {
8592                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8593                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8594                                                 g_assert (!cmethod->klass->valuetype);
8595                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8596                                                         constrained_partial_call = TRUE;
8597                                         }
8598                                 }
8599
8600                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8601                                         if (cfg->verbose_level > 2)
8602                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8603                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8604                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8605                                                   cfg->gshared)) {
8606                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8607                                                 CHECK_CFG_ERROR;
8608                                         }
8609                                 } else {
8610                                         if (cfg->verbose_level > 2)
8611                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8612
8613                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8614                                                 /*
8615                                                  * This is needed since get_method_constrained can't find
8616                                                  * the method in klass representing a type var.
8617                                                  * The type var is guaranteed to be a reference type in this
8618                                                  * case.
8619                                                  */
8620                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8621                                                         g_assert (!cmethod->klass->valuetype);
8622                                         } else {
8623                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8624                                                 CHECK_CFG_ERROR;
8625                                         }
8626                                 }
8627
8628                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8629                                         /* Use the corresponding method from the base type to avoid boxing */
8630                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8631                                         g_assert (base_type);
8632                                         constrained_class = mono_class_from_mono_type (base_type);
8633                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8634                                         g_assert (cmethod);
8635                                 }
8636                         }
8637
8638                         if (!dont_verify && !cfg->skip_visibility) {
8639                                 MonoMethod *target_method = cil_method;
8640                                 if (method->is_inflated) {
8641                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8642                                         CHECK_CFG_ERROR;
8643                                 }
8644                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8645                                         !mono_method_can_access_method (method, cil_method))
8646                                         emit_method_access_failure (cfg, method, cil_method);
8647                         }
8648
8649                         if (mono_security_core_clr_enabled ())
8650                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8651
8652                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8653                                 /* MS.NET seems to silently convert this to a callvirt */
8654                                 virtual_ = 1;
8655
8656                         {
8657                                 /*
8658                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8659                                  * converts to a callvirt.
8660                                  *
8661                                  * tests/bug-515884.il is an example of this behavior
8662                                  */
8663                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8664                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8665                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8666                                         virtual_ = 1;
8667                         }
8668
8669                         if (!cmethod->klass->inited)
8670                                 if (!mono_class_init (cmethod->klass))
8671                                         TYPE_LOAD_ERROR (cmethod->klass);
8672
8673                         fsig = mono_method_signature (cmethod);
8674                         if (!fsig)
8675                                 LOAD_ERROR;
8676                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8677                                 mini_class_is_system_array (cmethod->klass)) {
8678                                 array_rank = cmethod->klass->rank;
8679                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8680                                 direct_icall = TRUE;
8681                         } else if (fsig->pinvoke) {
8682                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8683                                 fsig = mono_method_signature (wrapper);
8684                         } else if (constrained_class) {
8685                         } else {
8686                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8687                                 CHECK_CFG_ERROR;
8688                         }
8689
8690                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8691                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8692
8693                         /* See code below */
8694                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8695                                 MonoBasicBlock *tbb;
8696
8697                                 GET_BBLOCK (cfg, tbb, ip + 5);
8698                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8699                                         /*
8700                                          * We want to extend the try block to cover the call, but we can't do it if the
8701                                          * call is made directly since its followed by an exception check.
8702                                          */
8703                                         direct_icall = FALSE;
8704                                 }
8705                         }
8706
8707                         mono_save_token_info (cfg, image, token, cil_method);
8708
8709                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8710                                 need_seq_point = TRUE;
8711
8712                         /* Don't support calls made using type arguments for now */
8713                         /*
8714                           if (cfg->gsharedvt) {
8715                           if (mini_is_gsharedvt_signature (fsig))
8716                           GSHAREDVT_FAILURE (*ip);
8717                           }
8718                         */
8719
8720                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8721                                 g_assert_not_reached ();
8722
8723                         n = fsig->param_count + fsig->hasthis;
8724
8725                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8726                                 UNVERIFIED;
8727
8728                         if (!cfg->gshared)
8729                                 g_assert (!mono_method_check_context_used (cmethod));
8730
8731                         CHECK_STACK (n);
8732
8733                         //g_assert (!virtual_ || fsig->hasthis);
8734
8735                         sp -= n;
8736
8737                         /*
8738                          * We have the `constrained.' prefix opcode.
8739                          */
8740                         if (constrained_class) {
8741                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8742                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8743                                                 /* The 'Own method' case below */
8744                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8745                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8746                                         } else {
8747                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8748                                                 CHECK_CFG_EXCEPTION;
8749                                                 g_assert (ins);
8750                                                 goto call_end;
8751                                         }
8752                                 }
8753
8754                                 if (constrained_partial_call) {
8755                                         gboolean need_box = TRUE;
8756
8757                                         /*
8758                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8759                                          * called method is not known at compile time either. The called method could end up being
8760                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8761                                          * to box the receiver.
8762                                          * A simple solution would be to box always and make a normal virtual call, but that would
8763                                          * be bad performance wise.
8764                                          */
8765                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8766                                                 /*
8767                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8768                                                  */
8769                                                 need_box = FALSE;
8770                                         }
8771
8772                                         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)) {
8773                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8774                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8775                                                 ins->klass = constrained_class;
8776                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8777                                                 CHECK_CFG_EXCEPTION;
8778                                         } else if (need_box) {
8779                                                 MonoInst *box_type;
8780                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8781                                                 MonoInst *nonbox_call;
8782
8783                                                 /*
8784                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8785                                                  * if needed.
8786                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8787                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8788                                                  */
8789                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8790
8791                                                 NEW_BBLOCK (cfg, is_ref_bb);
8792                                                 NEW_BBLOCK (cfg, end_bb);
8793
8794                                                 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);
8795                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8796                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8797
8798                                                 /* Non-ref case */
8799                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8800
8801                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8802
8803                                                 /* Ref case */
8804                                                 MONO_START_BB (cfg, is_ref_bb);
8805                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8806                                                 ins->klass = constrained_class;
8807                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8808                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8809
8810                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8811
8812                                                 MONO_START_BB (cfg, end_bb);
8813                                                 cfg->cbb = end_bb;
8814
8815                                                 nonbox_call->dreg = ins->dreg;
8816                                                 goto call_end;
8817                                         } else {
8818                                                 g_assert (mono_class_is_interface (cmethod->klass));
8819                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8820                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8821                                                 goto call_end;
8822                                         }
8823                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8824                                         /*
8825                                          * The type parameter is instantiated as a valuetype,
8826                                          * but that type doesn't override the method we're
8827                                          * calling, so we need to box `this'.
8828                                          */
8829                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8830                                         ins->klass = constrained_class;
8831                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8832                                         CHECK_CFG_EXCEPTION;
8833                                 } else if (!constrained_class->valuetype) {
8834                                         int dreg = alloc_ireg_ref (cfg);
8835
8836                                         /*
8837                                          * The type parameter is instantiated as a reference
8838                                          * type.  We have a managed pointer on the stack, so
8839                                          * we need to dereference it here.
8840                                          */
8841                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8842                                         ins->type = STACK_OBJ;
8843                                         sp [0] = ins;
8844                                 } else {
8845                                         if (cmethod->klass->valuetype) {
8846                                                 /* Own method */
8847                                         } else {
8848                                                 /* Interface method */
8849                                                 int ioffset, slot;
8850
8851                                                 mono_class_setup_vtable (constrained_class);
8852                                                 CHECK_TYPELOAD (constrained_class);
8853                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8854                                                 if (ioffset == -1)
8855                                                         TYPE_LOAD_ERROR (constrained_class);
8856                                                 slot = mono_method_get_vtable_slot (cmethod);
8857                                                 if (slot == -1)
8858                                                         TYPE_LOAD_ERROR (cmethod->klass);
8859                                                 cmethod = constrained_class->vtable [ioffset + slot];
8860
8861                                                 if (cmethod->klass == mono_defaults.enum_class) {
8862                                                         /* Enum implements some interfaces, so treat this as the first case */
8863                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8864                                                         ins->klass = constrained_class;
8865                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8866                                                         CHECK_CFG_EXCEPTION;
8867                                                 }
8868                                         }
8869                                         virtual_ = 0;
8870                                 }
8871                                 constrained_class = NULL;
8872                         }
8873
8874                         if (check_call_signature (cfg, fsig, sp))
8875                                 UNVERIFIED;
8876
8877                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8878                                 delegate_invoke = TRUE;
8879
8880                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8881                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8882                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8883                                         emit_widen = FALSE;
8884                                 }
8885
8886                                 goto call_end;
8887                         }
8888
8889                         /*
8890                          * If the callee is a shared method, then its static cctor
8891                          * might not get called after the call was patched.
8892                          */
8893                         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)) {
8894                                 emit_class_init (cfg, cmethod->klass);
8895                                 CHECK_TYPELOAD (cmethod->klass);
8896                         }
8897
8898                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8899
8900                         if (cfg->gshared) {
8901                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8902
8903                                 context_used = mini_method_check_context_used (cfg, cmethod);
8904
8905                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8906                                         /* Generic method interface
8907                                            calls are resolved via a
8908                                            helper function and don't
8909                                            need an imt. */
8910                                         if (!cmethod_context || !cmethod_context->method_inst)
8911                                                 pass_imt_from_rgctx = TRUE;
8912                                 }
8913
8914                                 /*
8915                                  * If a shared method calls another
8916                                  * shared method then the caller must
8917                                  * have a generic sharing context
8918                                  * because the magic trampoline
8919                                  * requires it.  FIXME: We shouldn't
8920                                  * have to force the vtable/mrgctx
8921                                  * variable here.  Instead there
8922                                  * should be a flag in the cfg to
8923                                  * request a generic sharing context.
8924                                  */
8925                                 if (context_used &&
8926                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8927                                         mono_get_vtable_var (cfg);
8928                         }
8929
8930                         if (pass_vtable) {
8931                                 if (context_used) {
8932                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8933                                 } else {
8934                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8935
8936                                         CHECK_TYPELOAD (cmethod->klass);
8937                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8938                                 }
8939                         }
8940
8941                         if (pass_mrgctx) {
8942                                 g_assert (!vtable_arg);
8943
8944                                 if (!cfg->compile_aot) {
8945                                         /*
8946                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8947                                          * for type load errors before.
8948                                          */
8949                                         mono_class_setup_vtable (cmethod->klass);
8950                                         CHECK_TYPELOAD (cmethod->klass);
8951                                 }
8952
8953                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8954
8955                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8956                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8957                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8958                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8959                                         if (virtual_)
8960                                                 check_this = TRUE;
8961                                         virtual_ = 0;
8962                                 }
8963                         }
8964
8965                         if (pass_imt_from_rgctx) {
8966                                 g_assert (!pass_vtable);
8967
8968                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8969                                         cmethod, MONO_RGCTX_INFO_METHOD);
8970                         }
8971
8972                         if (check_this)
8973                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8974
8975                         /* Calling virtual generic methods */
8976                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8977                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8978                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8979                             fsig->generic_param_count &&
8980                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8981                                 !cfg->llvm_only) {
8982                                 MonoInst *this_temp, *this_arg_temp, *store;
8983                                 MonoInst *iargs [4];
8984
8985                                 g_assert (fsig->is_inflated);
8986
8987                                 /* Prevent inlining of methods that contain indirect calls */
8988                                 INLINE_FAILURE ("virtual generic call");
8989
8990                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8991                                         GSHAREDVT_FAILURE (*ip);
8992
8993                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8994                                         g_assert (!imt_arg);
8995                                         if (!context_used)
8996                                                 g_assert (cmethod->is_inflated);
8997                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8998                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8999                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9000                                 } else {
9001                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9002                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9003                                         MONO_ADD_INS (cfg->cbb, store);
9004
9005                                         /* FIXME: This should be a managed pointer */
9006                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9007
9008                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9009                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9010                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9011                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9012                                         addr = mono_emit_jit_icall (cfg,
9013                                                                                                 mono_helper_compile_generic_method, iargs);
9014
9015                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9016
9017                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9018                                 }
9019
9020                                 goto call_end;
9021                         }
9022
9023                         /*
9024                          * Implement a workaround for the inherent races involved in locking:
9025                          * Monitor.Enter ()
9026                          * try {
9027                          * } finally {
9028                          *    Monitor.Exit ()
9029                          * }
9030                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9031                          * try block, the Exit () won't be executed, see:
9032                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9033                          * To work around this, we extend such try blocks to include the last x bytes
9034                          * of the Monitor.Enter () call.
9035                          */
9036                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9037                                 MonoBasicBlock *tbb;
9038
9039                                 GET_BBLOCK (cfg, tbb, ip + 5);
9040                                 /*
9041                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9042                                  * from Monitor.Enter like ArgumentNullException.
9043                                  */
9044                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9045                                         /* Mark this bblock as needing to be extended */
9046                                         tbb->extend_try_block = TRUE;
9047                                 }
9048                         }
9049
9050                         /* Conversion to a JIT intrinsic */
9051                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9052                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9053                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9054                                         emit_widen = FALSE;
9055                                 }
9056                                 goto call_end;
9057                         }
9058                         CHECK_CFG_ERROR;
9059
9060                         /* Inlining */
9061                         if ((cfg->opt & MONO_OPT_INLINE) &&
9062                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9063                             mono_method_check_inlining (cfg, cmethod)) {
9064                                 int costs;
9065                                 gboolean always = FALSE;
9066
9067                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9068                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9069                                         /* Prevent inlining of methods that call wrappers */
9070                                         INLINE_FAILURE ("wrapper call");
9071                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9072                                         always = TRUE;
9073                                 }
9074
9075                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9076                                 if (costs) {
9077                                         cfg->real_offset += 5;
9078
9079                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9080                                                 /* *sp is already set by inline_method */
9081                                                 sp++;
9082                                                 push_res = FALSE;
9083                                         }
9084
9085                                         inline_costs += costs;
9086
9087                                         goto call_end;
9088                                 }
9089                         }
9090
9091                         /* Tail recursion elimination */
9092                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9093                                 gboolean has_vtargs = FALSE;
9094                                 int i;
9095
9096                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9097                                 INLINE_FAILURE ("tail call");
9098
9099                                 /* keep it simple */
9100                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9101                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9102                                                 has_vtargs = TRUE;
9103                                 }
9104
9105                                 if (!has_vtargs) {
9106                                         if (need_seq_point) {
9107                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9108                                                 need_seq_point = FALSE;
9109                                         }
9110                                         for (i = 0; i < n; ++i)
9111                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9112                                         MONO_INST_NEW (cfg, ins, OP_BR);
9113                                         MONO_ADD_INS (cfg->cbb, ins);
9114                                         tblock = start_bblock->out_bb [0];
9115                                         link_bblock (cfg, cfg->cbb, tblock);
9116                                         ins->inst_target_bb = tblock;
9117                                         start_new_bblock = 1;
9118
9119                                         /* skip the CEE_RET, too */
9120                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9121                                                 skip_ret = TRUE;
9122                                         push_res = FALSE;
9123                                         goto call_end;
9124                                 }
9125                         }
9126
9127                         inline_costs += 10 * num_calls++;
9128
9129                         /*
9130                          * Synchronized wrappers.
9131                          * Its hard to determine where to replace a method with its synchronized
9132                          * wrapper without causing an infinite recursion. The current solution is
9133                          * to add the synchronized wrapper in the trampolines, and to
9134                          * change the called method to a dummy wrapper, and resolve that wrapper
9135                          * to the real method in mono_jit_compile_method ().
9136                          */
9137                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9138                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9139                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9140                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9141                         }
9142
9143                         /*
9144                          * Making generic calls out of gsharedvt methods.
9145                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9146                          * patching gshared method addresses into a gsharedvt method.
9147                          */
9148                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
9149                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9150                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9151                                 MonoRgctxInfoType info_type;
9152
9153                                 if (virtual_) {
9154                                         //if (mono_class_is_interface (cmethod->klass))
9155                                                 //GSHAREDVT_FAILURE (*ip);
9156                                         // disable for possible remoting calls
9157                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9158                                                 GSHAREDVT_FAILURE (*ip);
9159                                         if (fsig->generic_param_count) {
9160                                                 /* virtual generic call */
9161                                                 g_assert (!imt_arg);
9162                                                 /* Same as the virtual generic case above */
9163                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9164                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9165                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9166                                                 vtable_arg = NULL;
9167                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
9168                                                 /* This can happen when we call a fully instantiated iface method */
9169                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9170                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9171                                                 vtable_arg = NULL;
9172                                         }
9173                                 }
9174
9175                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9176                                         keep_this_alive = sp [0];
9177
9178                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9179                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9180                                 else
9181                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9182                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9183
9184                                 if (cfg->llvm_only) {
9185                                         // FIXME: Avoid initializing vtable_arg
9186                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9187                                 } else {
9188                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9189                                 }
9190                                 goto call_end;
9191                         }
9192
9193                         /* Generic sharing */
9194
9195                         /*
9196                          * Use this if the callee is gsharedvt sharable too, since
9197                          * at runtime we might find an instantiation so the call cannot
9198                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9199                          */
9200                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9201                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9202                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9203                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9204                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9205                                 INLINE_FAILURE ("gshared");
9206
9207                                 g_assert (cfg->gshared && cmethod);
9208                                 g_assert (!addr);
9209
9210                                 /*
9211                                  * We are compiling a call to a
9212                                  * generic method from shared code,
9213                                  * which means that we have to look up
9214                                  * the method in the rgctx and do an
9215                                  * indirect call.
9216                                  */
9217                                 if (fsig->hasthis)
9218                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9219
9220                                 if (cfg->llvm_only) {
9221                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9222                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9223                                         else
9224                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9225                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9226                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9227                                 } else {
9228                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9229                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9230                                 }
9231                                 goto call_end;
9232                         }
9233
9234                         /* Direct calls to icalls */
9235                         if (direct_icall) {
9236                                 MonoMethod *wrapper;
9237                                 int costs;
9238
9239                                 /* Inline the wrapper */
9240                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9241
9242                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9243                                 g_assert (costs > 0);
9244                                 cfg->real_offset += 5;
9245
9246                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9247                                         /* *sp is already set by inline_method */
9248                                         sp++;
9249                                         push_res = FALSE;
9250                                 }
9251
9252                                 inline_costs += costs;
9253
9254                                 goto call_end;
9255                         }
9256
9257                         /* Array methods */
9258                         if (array_rank) {
9259                                 MonoInst *addr;
9260
9261                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9262                                         MonoInst *val = sp [fsig->param_count];
9263
9264                                         if (val->type == STACK_OBJ) {
9265                                                 MonoInst *iargs [2];
9266
9267                                                 iargs [0] = sp [0];
9268                                                 iargs [1] = val;
9269
9270                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9271                                         }
9272
9273                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9274                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9275                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9276                                                 emit_write_barrier (cfg, addr, val);
9277                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9278                                                 GSHAREDVT_FAILURE (*ip);
9279                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9280                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9281
9282                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9283                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9284                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9285                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9286                                         CHECK_TYPELOAD (cmethod->klass);
9287
9288                                         readonly = FALSE;
9289                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9290                                         ins = addr;
9291                                 } else {
9292                                         g_assert_not_reached ();
9293                                 }
9294
9295                                 emit_widen = FALSE;
9296                                 goto call_end;
9297                         }
9298
9299                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9300                         if (ins)
9301                                 goto call_end;
9302
9303                         /* Tail prefix / tail call optimization */
9304
9305                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9306                         /* FIXME: runtime generic context pointer for jumps? */
9307                         /* FIXME: handle this for generic sharing eventually */
9308                         if ((ins_flag & MONO_INST_TAILCALL) &&
9309                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9310                                 supported_tail_call = TRUE;
9311
9312                         if (supported_tail_call) {
9313                                 MonoCallInst *call;
9314
9315                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9316                                 INLINE_FAILURE ("tail call");
9317
9318                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9319
9320                                 if (cfg->backend->have_op_tail_call) {
9321                                         /* Handle tail calls similarly to normal calls */
9322                                         tail_call = TRUE;
9323                                 } else {
9324                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9325
9326                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9327                                         call->tail_call = TRUE;
9328                                         call->method = cmethod;
9329                                         call->signature = mono_method_signature (cmethod);
9330
9331                                         /*
9332                                          * We implement tail calls by storing the actual arguments into the
9333                                          * argument variables, then emitting a CEE_JMP.
9334                                          */
9335                                         for (i = 0; i < n; ++i) {
9336                                                 /* Prevent argument from being register allocated */
9337                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9338                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9339                                         }
9340                                         ins = (MonoInst*)call;
9341                                         ins->inst_p0 = cmethod;
9342                                         ins->inst_p1 = arg_array [0];
9343                                         MONO_ADD_INS (cfg->cbb, ins);
9344                                         link_bblock (cfg, cfg->cbb, end_bblock);
9345                                         start_new_bblock = 1;
9346
9347                                         // FIXME: Eliminate unreachable epilogs
9348
9349                                         /*
9350                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9351                                          * only reachable from this call.
9352                                          */
9353                                         GET_BBLOCK (cfg, tblock, ip + 5);
9354                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9355                                                 skip_ret = TRUE;
9356                                         push_res = FALSE;
9357
9358                                         goto call_end;
9359                                 }
9360                         }
9361
9362                         /*
9363                          * Virtual calls in llvm-only mode.
9364                          */
9365                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9366                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9367                                 goto call_end;
9368                         }
9369
9370                         /* Common call */
9371                         if (!(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9372                                 INLINE_FAILURE ("call");
9373                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9374                                                                                           imt_arg, vtable_arg);
9375
9376                         if (tail_call && !cfg->llvm_only) {
9377                                 link_bblock (cfg, cfg->cbb, end_bblock);
9378                                 start_new_bblock = 1;
9379
9380                                 // FIXME: Eliminate unreachable epilogs
9381
9382                                 /*
9383                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9384                                  * only reachable from this call.
9385                                  */
9386                                 GET_BBLOCK (cfg, tblock, ip + 5);
9387                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9388                                         skip_ret = TRUE;
9389                                 push_res = FALSE;
9390                         }
9391
9392                         call_end:
9393
9394                         /* End of call, INS should contain the result of the call, if any */
9395
9396                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9397                                 g_assert (ins);
9398                                 if (emit_widen)
9399                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9400                                 else
9401                                         *sp++ = ins;
9402                         }
9403
9404                         if (keep_this_alive) {
9405                                 MonoInst *dummy_use;
9406
9407                                 /* See mono_emit_method_call_full () */
9408                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9409                         }
9410
9411                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9412                                 /*
9413                                  * Clang can convert these calls to tail calls which screw up the stack
9414                                  * walk. This happens even when the -fno-optimize-sibling-calls
9415                                  * option is passed to clang.
9416                                  * Work around this by emitting a dummy call.
9417                                  */
9418                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9419                         }
9420
9421                         CHECK_CFG_EXCEPTION;
9422
9423                         ip += 5;
9424                         if (skip_ret) {
9425                                 g_assert (*ip == CEE_RET);
9426                                 ip += 1;
9427                         }
9428                         ins_flag = 0;
9429                         constrained_class = NULL;
9430                         if (need_seq_point)
9431                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9432                         break;
9433                 }
9434                 case CEE_RET:
9435                         if (cfg->method != method) {
9436                                 /* return from inlined method */
9437                                 /*
9438                                  * If in_count == 0, that means the ret is unreachable due to
9439                                  * being preceeded by a throw. In that case, inline_method () will
9440                                  * handle setting the return value
9441                                  * (test case: test_0_inline_throw ()).
9442                                  */
9443                                 if (return_var && cfg->cbb->in_count) {
9444                                         MonoType *ret_type = mono_method_signature (method)->ret;
9445
9446                                         MonoInst *store;
9447                                         CHECK_STACK (1);
9448                                         --sp;
9449
9450                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9451                                                 UNVERIFIED;
9452
9453                                         //g_assert (returnvar != -1);
9454                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9455                                         cfg->ret_var_set = TRUE;
9456                                 }
9457                         } else {
9458                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9459
9460                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9461                                         emit_pop_lmf (cfg);
9462
9463                                 if (cfg->ret) {
9464                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9465
9466                                         if (seq_points && !sym_seq_points) {
9467                                                 /*
9468                                                  * Place a seq point here too even through the IL stack is not
9469                                                  * empty, so a step over on
9470                                                  * call <FOO>
9471                                                  * ret
9472                                                  * will work correctly.
9473                                                  */
9474                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9475                                                 MONO_ADD_INS (cfg->cbb, ins);
9476                                         }
9477
9478                                         g_assert (!return_var);
9479                                         CHECK_STACK (1);
9480                                         --sp;
9481
9482                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9483                                                 UNVERIFIED;
9484
9485                                         emit_setret (cfg, *sp);
9486                                 }
9487                         }
9488                         if (sp != stack_start)
9489                                 UNVERIFIED;
9490                         MONO_INST_NEW (cfg, ins, OP_BR);
9491                         ip++;
9492                         ins->inst_target_bb = end_bblock;
9493                         MONO_ADD_INS (cfg->cbb, ins);
9494                         link_bblock (cfg, cfg->cbb, end_bblock);
9495                         start_new_bblock = 1;
9496                         break;
9497                 case CEE_BR_S:
9498                         CHECK_OPSIZE (2);
9499                         MONO_INST_NEW (cfg, ins, OP_BR);
9500                         ip++;
9501                         target = ip + 1 + (signed char)(*ip);
9502                         ++ip;
9503                         GET_BBLOCK (cfg, tblock, target);
9504                         link_bblock (cfg, cfg->cbb, tblock);
9505                         ins->inst_target_bb = tblock;
9506                         if (sp != stack_start) {
9507                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9508                                 sp = stack_start;
9509                                 CHECK_UNVERIFIABLE (cfg);
9510                         }
9511                         MONO_ADD_INS (cfg->cbb, ins);
9512                         start_new_bblock = 1;
9513                         inline_costs += BRANCH_COST;
9514                         break;
9515                 case CEE_BEQ_S:
9516                 case CEE_BGE_S:
9517                 case CEE_BGT_S:
9518                 case CEE_BLE_S:
9519                 case CEE_BLT_S:
9520                 case CEE_BNE_UN_S:
9521                 case CEE_BGE_UN_S:
9522                 case CEE_BGT_UN_S:
9523                 case CEE_BLE_UN_S:
9524                 case CEE_BLT_UN_S:
9525                         CHECK_OPSIZE (2);
9526                         CHECK_STACK (2);
9527                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9528                         ip++;
9529                         target = ip + 1 + *(signed char*)ip;
9530                         ip++;
9531
9532                         ADD_BINCOND (NULL);
9533
9534                         sp = stack_start;
9535                         inline_costs += BRANCH_COST;
9536                         break;
9537                 case CEE_BR:
9538                         CHECK_OPSIZE (5);
9539                         MONO_INST_NEW (cfg, ins, OP_BR);
9540                         ip++;
9541
9542                         target = ip + 4 + (gint32)read32(ip);
9543                         ip += 4;
9544                         GET_BBLOCK (cfg, tblock, target);
9545                         link_bblock (cfg, cfg->cbb, tblock);
9546                         ins->inst_target_bb = tblock;
9547                         if (sp != stack_start) {
9548                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9549                                 sp = stack_start;
9550                                 CHECK_UNVERIFIABLE (cfg);
9551                         }
9552
9553                         MONO_ADD_INS (cfg->cbb, ins);
9554
9555                         start_new_bblock = 1;
9556                         inline_costs += BRANCH_COST;
9557                         break;
9558                 case CEE_BRFALSE_S:
9559                 case CEE_BRTRUE_S:
9560                 case CEE_BRFALSE:
9561                 case CEE_BRTRUE: {
9562                         MonoInst *cmp;
9563                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9564                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9565                         guint32 opsize = is_short ? 1 : 4;
9566
9567                         CHECK_OPSIZE (opsize);
9568                         CHECK_STACK (1);
9569                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9570                                 UNVERIFIED;
9571                         ip ++;
9572                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9573                         ip += opsize;
9574
9575                         sp--;
9576
9577                         GET_BBLOCK (cfg, tblock, target);
9578                         link_bblock (cfg, cfg->cbb, tblock);
9579                         GET_BBLOCK (cfg, tblock, ip);
9580                         link_bblock (cfg, cfg->cbb, tblock);
9581
9582                         if (sp != stack_start) {
9583                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9584                                 CHECK_UNVERIFIABLE (cfg);
9585                         }
9586
9587                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9588                         cmp->sreg1 = sp [0]->dreg;
9589                         type_from_op (cfg, cmp, sp [0], NULL);
9590                         CHECK_TYPE (cmp);
9591
9592 #if SIZEOF_REGISTER == 4
9593                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9594                                 /* Convert it to OP_LCOMPARE */
9595                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9596                                 ins->type = STACK_I8;
9597                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9598                                 ins->inst_l = 0;
9599                                 MONO_ADD_INS (cfg->cbb, ins);
9600                                 cmp->opcode = OP_LCOMPARE;
9601                                 cmp->sreg2 = ins->dreg;
9602                         }
9603 #endif
9604                         MONO_ADD_INS (cfg->cbb, cmp);
9605
9606                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9607                         type_from_op (cfg, ins, sp [0], NULL);
9608                         MONO_ADD_INS (cfg->cbb, ins);
9609                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9610                         GET_BBLOCK (cfg, tblock, target);
9611                         ins->inst_true_bb = tblock;
9612                         GET_BBLOCK (cfg, tblock, ip);
9613                         ins->inst_false_bb = tblock;
9614                         start_new_bblock = 2;
9615
9616                         sp = stack_start;
9617                         inline_costs += BRANCH_COST;
9618                         break;
9619                 }
9620                 case CEE_BEQ:
9621                 case CEE_BGE:
9622                 case CEE_BGT:
9623                 case CEE_BLE:
9624                 case CEE_BLT:
9625                 case CEE_BNE_UN:
9626                 case CEE_BGE_UN:
9627                 case CEE_BGT_UN:
9628                 case CEE_BLE_UN:
9629                 case CEE_BLT_UN:
9630                         CHECK_OPSIZE (5);
9631                         CHECK_STACK (2);
9632                         MONO_INST_NEW (cfg, ins, *ip);
9633                         ip++;
9634                         target = ip + 4 + (gint32)read32(ip);
9635                         ip += 4;
9636
9637                         ADD_BINCOND (NULL);
9638
9639                         sp = stack_start;
9640                         inline_costs += BRANCH_COST;
9641                         break;
9642                 case CEE_SWITCH: {
9643                         MonoInst *src1;
9644                         MonoBasicBlock **targets;
9645                         MonoBasicBlock *default_bblock;
9646                         MonoJumpInfoBBTable *table;
9647                         int offset_reg = alloc_preg (cfg);
9648                         int target_reg = alloc_preg (cfg);
9649                         int table_reg = alloc_preg (cfg);
9650                         int sum_reg = alloc_preg (cfg);
9651                         gboolean use_op_switch;
9652
9653                         CHECK_OPSIZE (5);
9654                         CHECK_STACK (1);
9655                         n = read32 (ip + 1);
9656                         --sp;
9657                         src1 = sp [0];
9658                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9659                                 UNVERIFIED;
9660
9661                         ip += 5;
9662                         CHECK_OPSIZE (n * sizeof (guint32));
9663                         target = ip + n * sizeof (guint32);
9664
9665                         GET_BBLOCK (cfg, default_bblock, target);
9666                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9667
9668                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9669                         for (i = 0; i < n; ++i) {
9670                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9671                                 targets [i] = tblock;
9672                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9673                                 ip += 4;
9674                         }
9675
9676                         if (sp != stack_start) {
9677                                 /*
9678                                  * Link the current bb with the targets as well, so handle_stack_args
9679                                  * will set their in_stack correctly.
9680                                  */
9681                                 link_bblock (cfg, cfg->cbb, default_bblock);
9682                                 for (i = 0; i < n; ++i)
9683                                         link_bblock (cfg, cfg->cbb, targets [i]);
9684
9685                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9686                                 sp = stack_start;
9687                                 CHECK_UNVERIFIABLE (cfg);
9688
9689                                 /* Undo the links */
9690                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9691                                 for (i = 0; i < n; ++i)
9692                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9693                         }
9694
9695                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9696                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9697
9698                         for (i = 0; i < n; ++i)
9699                                 link_bblock (cfg, cfg->cbb, targets [i]);
9700
9701                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9702                         table->table = targets;
9703                         table->table_size = n;
9704
9705                         use_op_switch = FALSE;
9706 #ifdef TARGET_ARM
9707                         /* ARM implements SWITCH statements differently */
9708                         /* FIXME: Make it use the generic implementation */
9709                         if (!cfg->compile_aot)
9710                                 use_op_switch = TRUE;
9711 #endif
9712
9713                         if (COMPILE_LLVM (cfg))
9714                                 use_op_switch = TRUE;
9715
9716                         cfg->cbb->has_jump_table = 1;
9717
9718                         if (use_op_switch) {
9719                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9720                                 ins->sreg1 = src1->dreg;
9721                                 ins->inst_p0 = table;
9722                                 ins->inst_many_bb = targets;
9723                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9724                                 MONO_ADD_INS (cfg->cbb, ins);
9725                         } else {
9726                                 if (sizeof (gpointer) == 8)
9727                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9728                                 else
9729                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9730
9731 #if SIZEOF_REGISTER == 8
9732                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9733                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9734 #endif
9735
9736                                 if (cfg->compile_aot) {
9737                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9738                                 } else {
9739                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9740                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9741                                         ins->inst_p0 = table;
9742                                         ins->dreg = table_reg;
9743                                         MONO_ADD_INS (cfg->cbb, ins);
9744                                 }
9745
9746                                 /* FIXME: Use load_memindex */
9747                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9748                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9749                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9750                         }
9751                         start_new_bblock = 1;
9752                         inline_costs += (BRANCH_COST * 2);
9753                         break;
9754                 }
9755                 case CEE_LDIND_I1:
9756                 case CEE_LDIND_U1:
9757                 case CEE_LDIND_I2:
9758                 case CEE_LDIND_U2:
9759                 case CEE_LDIND_I4:
9760                 case CEE_LDIND_U4:
9761                 case CEE_LDIND_I8:
9762                 case CEE_LDIND_I:
9763                 case CEE_LDIND_R4:
9764                 case CEE_LDIND_R8:
9765                 case CEE_LDIND_REF:
9766                         CHECK_STACK (1);
9767                         --sp;
9768
9769                         switch (*ip) {
9770                         case CEE_LDIND_R4:
9771                         case CEE_LDIND_R8:
9772                                 dreg = alloc_freg (cfg);
9773                                 break;
9774                         case CEE_LDIND_I8:
9775                                 dreg = alloc_lreg (cfg);
9776                                 break;
9777                         case CEE_LDIND_REF:
9778                                 dreg = alloc_ireg_ref (cfg);
9779                                 break;
9780                         default:
9781                                 dreg = alloc_preg (cfg);
9782                         }
9783
9784                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
9785                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
9786                         if (*ip == CEE_LDIND_R4)
9787                                 ins->type = cfg->r4_stack_type;
9788                         ins->flags |= ins_flag;
9789                         MONO_ADD_INS (cfg->cbb, ins);
9790                         *sp++ = ins;
9791                         if (ins_flag & MONO_INST_VOLATILE) {
9792                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9793                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9794                         }
9795                         ins_flag = 0;
9796                         ++ip;
9797                         break;
9798                 case CEE_STIND_REF:
9799                 case CEE_STIND_I1:
9800                 case CEE_STIND_I2:
9801                 case CEE_STIND_I4:
9802                 case CEE_STIND_I8:
9803                 case CEE_STIND_R4:
9804                 case CEE_STIND_R8:
9805                 case CEE_STIND_I:
9806                         CHECK_STACK (2);
9807                         sp -= 2;
9808
9809                         if (ins_flag & MONO_INST_VOLATILE) {
9810                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9811                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9812                         }
9813
9814                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9815                         ins->flags |= ins_flag;
9816                         ins_flag = 0;
9817
9818                         MONO_ADD_INS (cfg->cbb, ins);
9819
9820                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9821                                 emit_write_barrier (cfg, sp [0], sp [1]);
9822
9823                         inline_costs += 1;
9824                         ++ip;
9825                         break;
9826
9827                 case CEE_MUL:
9828                         CHECK_STACK (2);
9829
9830                         MONO_INST_NEW (cfg, ins, (*ip));
9831                         sp -= 2;
9832                         ins->sreg1 = sp [0]->dreg;
9833                         ins->sreg2 = sp [1]->dreg;
9834                         type_from_op (cfg, ins, sp [0], sp [1]);
9835                         CHECK_TYPE (ins);
9836                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9837
9838                         /* Use the immediate opcodes if possible */
9839                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9840                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9841                                 if (imm_opcode != -1) {
9842                                         ins->opcode = imm_opcode;
9843                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9844                                         ins->sreg2 = -1;
9845
9846                                         NULLIFY_INS (sp [1]);
9847                                 }
9848                         }
9849
9850                         MONO_ADD_INS ((cfg)->cbb, (ins));
9851
9852                         *sp++ = mono_decompose_opcode (cfg, ins);
9853                         ip++;
9854                         break;
9855                 case CEE_ADD:
9856                 case CEE_SUB:
9857                 case CEE_DIV:
9858                 case CEE_DIV_UN:
9859                 case CEE_REM:
9860                 case CEE_REM_UN:
9861                 case CEE_AND:
9862                 case CEE_OR:
9863                 case CEE_XOR:
9864                 case CEE_SHL:
9865                 case CEE_SHR:
9866                 case CEE_SHR_UN:
9867                         CHECK_STACK (2);
9868
9869                         MONO_INST_NEW (cfg, ins, (*ip));
9870                         sp -= 2;
9871                         ins->sreg1 = sp [0]->dreg;
9872                         ins->sreg2 = sp [1]->dreg;
9873                         type_from_op (cfg, ins, sp [0], sp [1]);
9874                         CHECK_TYPE (ins);
9875                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9876                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9877
9878                         /* FIXME: Pass opcode to is_inst_imm */
9879
9880                         /* Use the immediate opcodes if possible */
9881                         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)) {
9882                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9883                                 if (imm_opcode != -1) {
9884                                         ins->opcode = imm_opcode;
9885                                         if (sp [1]->opcode == OP_I8CONST) {
9886 #if SIZEOF_REGISTER == 8
9887                                                 ins->inst_imm = sp [1]->inst_l;
9888 #else
9889                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9890                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9891 #endif
9892                                         }
9893                                         else
9894                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9895                                         ins->sreg2 = -1;
9896
9897                                         /* Might be followed by an instruction added by add_widen_op */
9898                                         if (sp [1]->next == NULL)
9899                                                 NULLIFY_INS (sp [1]);
9900                                 }
9901                         }
9902                         MONO_ADD_INS ((cfg)->cbb, (ins));
9903
9904                         *sp++ = mono_decompose_opcode (cfg, ins);
9905                         ip++;
9906                         break;
9907                 case CEE_NEG:
9908                 case CEE_NOT:
9909                 case CEE_CONV_I1:
9910                 case CEE_CONV_I2:
9911                 case CEE_CONV_I4:
9912                 case CEE_CONV_R4:
9913                 case CEE_CONV_R8:
9914                 case CEE_CONV_U4:
9915                 case CEE_CONV_I8:
9916                 case CEE_CONV_U8:
9917                 case CEE_CONV_OVF_I8:
9918                 case CEE_CONV_OVF_U8:
9919                 case CEE_CONV_R_UN:
9920                         CHECK_STACK (1);
9921
9922                         /* Special case this earlier so we have long constants in the IR */
9923                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9924                                 int data = sp [-1]->inst_c0;
9925                                 sp [-1]->opcode = OP_I8CONST;
9926                                 sp [-1]->type = STACK_I8;
9927 #if SIZEOF_REGISTER == 8
9928                                 if ((*ip) == CEE_CONV_U8)
9929                                         sp [-1]->inst_c0 = (guint32)data;
9930                                 else
9931                                         sp [-1]->inst_c0 = data;
9932 #else
9933                                 sp [-1]->inst_ls_word = data;
9934                                 if ((*ip) == CEE_CONV_U8)
9935                                         sp [-1]->inst_ms_word = 0;
9936                                 else
9937                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9938 #endif
9939                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9940                         }
9941                         else {
9942                                 ADD_UNOP (*ip);
9943                         }
9944                         ip++;
9945                         break;
9946                 case CEE_CONV_OVF_I4:
9947                 case CEE_CONV_OVF_I1:
9948                 case CEE_CONV_OVF_I2:
9949                 case CEE_CONV_OVF_I:
9950                 case CEE_CONV_OVF_U:
9951                         CHECK_STACK (1);
9952
9953                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9954                                 ADD_UNOP (CEE_CONV_OVF_I8);
9955                                 ADD_UNOP (*ip);
9956                         } else {
9957                                 ADD_UNOP (*ip);
9958                         }
9959                         ip++;
9960                         break;
9961                 case CEE_CONV_OVF_U1:
9962                 case CEE_CONV_OVF_U2:
9963                 case CEE_CONV_OVF_U4:
9964                         CHECK_STACK (1);
9965
9966                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9967                                 ADD_UNOP (CEE_CONV_OVF_U8);
9968                                 ADD_UNOP (*ip);
9969                         } else {
9970                                 ADD_UNOP (*ip);
9971                         }
9972                         ip++;
9973                         break;
9974                 case CEE_CONV_OVF_I1_UN:
9975                 case CEE_CONV_OVF_I2_UN:
9976                 case CEE_CONV_OVF_I4_UN:
9977                 case CEE_CONV_OVF_I8_UN:
9978                 case CEE_CONV_OVF_U1_UN:
9979                 case CEE_CONV_OVF_U2_UN:
9980                 case CEE_CONV_OVF_U4_UN:
9981                 case CEE_CONV_OVF_U8_UN:
9982                 case CEE_CONV_OVF_I_UN:
9983                 case CEE_CONV_OVF_U_UN:
9984                 case CEE_CONV_U2:
9985                 case CEE_CONV_U1:
9986                 case CEE_CONV_I:
9987                 case CEE_CONV_U:
9988                         CHECK_STACK (1);
9989                         ADD_UNOP (*ip);
9990                         CHECK_CFG_EXCEPTION;
9991                         ip++;
9992                         break;
9993                 case CEE_ADD_OVF:
9994                 case CEE_ADD_OVF_UN:
9995                 case CEE_MUL_OVF:
9996                 case CEE_MUL_OVF_UN:
9997                 case CEE_SUB_OVF:
9998                 case CEE_SUB_OVF_UN:
9999                         CHECK_STACK (2);
10000                         ADD_BINOP (*ip);
10001                         ip++;
10002                         break;
10003                 case CEE_CPOBJ:
10004                         GSHAREDVT_FAILURE (*ip);
10005                         CHECK_OPSIZE (5);
10006                         CHECK_STACK (2);
10007                         token = read32 (ip + 1);
10008                         klass = mini_get_class (method, token, generic_context);
10009                         CHECK_TYPELOAD (klass);
10010                         sp -= 2;
10011                         if (generic_class_is_reference_type (cfg, klass)) {
10012                                 MonoInst *store, *load;
10013                                 int dreg = alloc_ireg_ref (cfg);
10014
10015                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10016                                 load->flags |= ins_flag;
10017                                 MONO_ADD_INS (cfg->cbb, load);
10018
10019                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10020                                 store->flags |= ins_flag;
10021                                 MONO_ADD_INS (cfg->cbb, store);
10022
10023                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10024                                         emit_write_barrier (cfg, sp [0], sp [1]);
10025                         } else {
10026                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10027                         }
10028                         ins_flag = 0;
10029                         ip += 5;
10030                         break;
10031                 case CEE_LDOBJ: {
10032                         int loc_index = -1;
10033                         int stloc_len = 0;
10034
10035                         CHECK_OPSIZE (5);
10036                         CHECK_STACK (1);
10037                         --sp;
10038                         token = read32 (ip + 1);
10039                         klass = mini_get_class (method, token, generic_context);
10040                         CHECK_TYPELOAD (klass);
10041
10042                         /* Optimize the common ldobj+stloc combination */
10043                         switch (ip [5]) {
10044                         case CEE_STLOC_S:
10045                                 loc_index = ip [6];
10046                                 stloc_len = 2;
10047                                 break;
10048                         case CEE_STLOC_0:
10049                         case CEE_STLOC_1:
10050                         case CEE_STLOC_2:
10051                         case CEE_STLOC_3:
10052                                 loc_index = ip [5] - CEE_STLOC_0;
10053                                 stloc_len = 1;
10054                                 break;
10055                         default:
10056                                 break;
10057                         }
10058
10059                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10060                                 CHECK_LOCAL (loc_index);
10061
10062                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10063                                 ins->dreg = cfg->locals [loc_index]->dreg;
10064                                 ins->flags |= ins_flag;
10065                                 ip += 5;
10066                                 ip += stloc_len;
10067                                 if (ins_flag & MONO_INST_VOLATILE) {
10068                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10069                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10070                                 }
10071                                 ins_flag = 0;
10072                                 break;
10073                         }
10074
10075                         /* Optimize the ldobj+stobj combination */
10076                         /* The reference case ends up being a load+store anyway */
10077                         /* Skip this if the operation is volatile. */
10078                         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)) {
10079                                 CHECK_STACK (1);
10080
10081                                 sp --;
10082
10083                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10084
10085                                 ip += 5 + 5;
10086                                 ins_flag = 0;
10087                                 break;
10088                         }
10089
10090                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10091                         ins->flags |= ins_flag;
10092                         *sp++ = ins;
10093
10094                         if (ins_flag & MONO_INST_VOLATILE) {
10095                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10096                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10097                         }
10098
10099                         ip += 5;
10100                         ins_flag = 0;
10101                         inline_costs += 1;
10102                         break;
10103                 }
10104                 case CEE_LDSTR:
10105                         CHECK_STACK_OVF (1);
10106                         CHECK_OPSIZE (5);
10107                         n = read32 (ip + 1);
10108
10109                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10110                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10111                                 ins->type = STACK_OBJ;
10112                                 *sp = ins;
10113                         }
10114                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10115                                 MonoInst *iargs [1];
10116                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10117
10118                                 if (cfg->compile_aot)
10119                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10120                                 else
10121                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10122                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10123                         } else {
10124                                 if (cfg->opt & MONO_OPT_SHARED) {
10125                                         MonoInst *iargs [3];
10126
10127                                         if (cfg->compile_aot) {
10128                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10129                                         }
10130                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10131                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10132                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10133                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10134                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10135                                         CHECK_CFG_ERROR;
10136                                 } else {
10137                                         if (cfg->cbb->out_of_line) {
10138                                                 MonoInst *iargs [2];
10139
10140                                                 if (image == mono_defaults.corlib) {
10141                                                         /*
10142                                                          * Avoid relocations in AOT and save some space by using a
10143                                                          * version of helper_ldstr specialized to mscorlib.
10144                                                          */
10145                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10146                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10147                                                 } else {
10148                                                         /* Avoid creating the string object */
10149                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10150                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10151                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10152                                                 }
10153                                         }
10154                                         else
10155                                         if (cfg->compile_aot) {
10156                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10157                                                 *sp = ins;
10158                                                 MONO_ADD_INS (cfg->cbb, ins);
10159                                         }
10160                                         else {
10161                                                 NEW_PCONST (cfg, ins, NULL);
10162                                                 ins->type = STACK_OBJ;
10163                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10164                                                 CHECK_CFG_ERROR;
10165
10166                                                 if (!ins->inst_p0)
10167                                                         OUT_OF_MEMORY_FAILURE;
10168
10169                                                 *sp = ins;
10170                                                 MONO_ADD_INS (cfg->cbb, ins);
10171                                         }
10172                                 }
10173                         }
10174
10175                         sp++;
10176                         ip += 5;
10177                         break;
10178                 case CEE_NEWOBJ: {
10179                         MonoInst *iargs [2];
10180                         MonoMethodSignature *fsig;
10181                         MonoInst this_ins;
10182                         MonoInst *alloc;
10183                         MonoInst *vtable_arg = NULL;
10184
10185                         CHECK_OPSIZE (5);
10186                         token = read32 (ip + 1);
10187                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10188                         CHECK_CFG_ERROR;
10189
10190                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10191                         CHECK_CFG_ERROR;
10192
10193                         mono_save_token_info (cfg, image, token, cmethod);
10194
10195                         if (!mono_class_init (cmethod->klass))
10196                                 TYPE_LOAD_ERROR (cmethod->klass);
10197
10198                         context_used = mini_method_check_context_used (cfg, cmethod);
10199
10200                         if (mono_security_core_clr_enabled ())
10201                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10202
10203                         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)) {
10204                                 emit_class_init (cfg, cmethod->klass);
10205                                 CHECK_TYPELOAD (cmethod->klass);
10206                         }
10207
10208                         /*
10209                         if (cfg->gsharedvt) {
10210                                 if (mini_is_gsharedvt_variable_signature (sig))
10211                                         GSHAREDVT_FAILURE (*ip);
10212                         }
10213                         */
10214
10215                         n = fsig->param_count;
10216                         CHECK_STACK (n);
10217
10218                         /*
10219                          * Generate smaller code for the common newobj <exception> instruction in
10220                          * argument checking code.
10221                          */
10222                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10223                                 is_exception_class (cmethod->klass) && n <= 2 &&
10224                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10225                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10226                                 MonoInst *iargs [3];
10227
10228                                 sp -= n;
10229
10230                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10231                                 switch (n) {
10232                                 case 0:
10233                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10234                                         break;
10235                                 case 1:
10236                                         iargs [1] = sp [0];
10237                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10238                                         break;
10239                                 case 2:
10240                                         iargs [1] = sp [0];
10241                                         iargs [2] = sp [1];
10242                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10243                                         break;
10244                                 default:
10245                                         g_assert_not_reached ();
10246                                 }
10247
10248                                 ip += 5;
10249                                 inline_costs += 5;
10250                                 break;
10251                         }
10252
10253                         /* move the args to allow room for 'this' in the first position */
10254                         while (n--) {
10255                                 --sp;
10256                                 sp [1] = sp [0];
10257                         }
10258
10259                         /* check_call_signature () requires sp[0] to be set */
10260                         this_ins.type = STACK_OBJ;
10261                         sp [0] = &this_ins;
10262                         if (check_call_signature (cfg, fsig, sp))
10263                                 UNVERIFIED;
10264
10265                         iargs [0] = NULL;
10266
10267                         if (mini_class_is_system_array (cmethod->klass)) {
10268                                 *sp = emit_get_rgctx_method (cfg, context_used,
10269                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10270
10271                                 /* Avoid varargs in the common case */
10272                                 if (fsig->param_count == 1)
10273                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10274                                 else if (fsig->param_count == 2)
10275                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10276                                 else if (fsig->param_count == 3)
10277                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10278                                 else if (fsig->param_count == 4)
10279                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10280                                 else
10281                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10282                         } else if (cmethod->string_ctor) {
10283                                 g_assert (!context_used);
10284                                 g_assert (!vtable_arg);
10285                                 /* we simply pass a null pointer */
10286                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10287                                 /* now call the string ctor */
10288                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10289                         } else {
10290                                 if (cmethod->klass->valuetype) {
10291                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10292                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10293                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10294
10295                                         alloc = NULL;
10296
10297                                         /*
10298                                          * The code generated by mini_emit_virtual_call () expects
10299                                          * iargs [0] to be a boxed instance, but luckily the vcall
10300                                          * will be transformed into a normal call there.
10301                                          */
10302                                 } else if (context_used) {
10303                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10304                                         *sp = alloc;
10305                                 } else {
10306                                         MonoVTable *vtable = NULL;
10307
10308                                         if (!cfg->compile_aot)
10309                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10310                                         CHECK_TYPELOAD (cmethod->klass);
10311
10312                                         /*
10313                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10314                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10315                                          * As a workaround, we call class cctors before allocating objects.
10316                                          */
10317                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10318                                                 emit_class_init (cfg, cmethod->klass);
10319                                                 if (cfg->verbose_level > 2)
10320                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10321                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10322                                         }
10323
10324                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10325                                         *sp = alloc;
10326                                 }
10327                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10328
10329                                 if (alloc)
10330                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10331
10332                                 /* Now call the actual ctor */
10333                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10334                                 CHECK_CFG_EXCEPTION;
10335                         }
10336
10337                         if (alloc == NULL) {
10338                                 /* Valuetype */
10339                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10340                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10341                                 *sp++= ins;
10342                         } else {
10343                                 *sp++ = alloc;
10344                         }
10345
10346                         ip += 5;
10347                         inline_costs += 5;
10348                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10349                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10350                         break;
10351                 }
10352                 case CEE_CASTCLASS:
10353                 case CEE_ISINST: {
10354                         CHECK_STACK (1);
10355                         --sp;
10356                         CHECK_OPSIZE (5);
10357                         token = read32 (ip + 1);
10358                         klass = mini_get_class (method, token, generic_context);
10359                         CHECK_TYPELOAD (klass);
10360                         if (sp [0]->type != STACK_OBJ)
10361                                 UNVERIFIED;
10362
10363                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10364                         ins->dreg = alloc_preg (cfg);
10365                         ins->sreg1 = (*sp)->dreg;
10366                         ins->klass = klass;
10367                         ins->type = STACK_OBJ;
10368                         MONO_ADD_INS (cfg->cbb, ins);
10369
10370                         CHECK_CFG_EXCEPTION;
10371                         *sp++ = ins;
10372                         ip += 5;
10373
10374                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10375                         break;
10376                 }
10377                 case CEE_UNBOX_ANY: {
10378                         MonoInst *res, *addr;
10379
10380                         CHECK_STACK (1);
10381                         --sp;
10382                         CHECK_OPSIZE (5);
10383                         token = read32 (ip + 1);
10384                         klass = mini_get_class (method, token, generic_context);
10385                         CHECK_TYPELOAD (klass);
10386
10387                         mono_save_token_info (cfg, image, token, klass);
10388
10389                         context_used = mini_class_check_context_used (cfg, klass);
10390
10391                         if (mini_is_gsharedvt_klass (klass)) {
10392                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10393                                 inline_costs += 2;
10394                         } else if (generic_class_is_reference_type (cfg, klass)) {
10395                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10396                                         EMIT_NEW_PCONST (cfg, res, NULL);
10397                                         res->type = STACK_OBJ;
10398                                 } else {
10399                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10400                                         res->dreg = alloc_preg (cfg);
10401                                         res->sreg1 = (*sp)->dreg;
10402                                         res->klass = klass;
10403                                         res->type = STACK_OBJ;
10404                                         MONO_ADD_INS (cfg->cbb, res);
10405                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10406                                 }
10407                         } else if (mono_class_is_nullable (klass)) {
10408                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10409                         } else {
10410                                 addr = handle_unbox (cfg, klass, sp, context_used);
10411                                 /* LDOBJ */
10412                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10413                                 res = ins;
10414                                 inline_costs += 2;
10415                         }
10416
10417                         *sp ++ = res;
10418                         ip += 5;
10419                         break;
10420                 }
10421                 case CEE_BOX: {
10422                         MonoInst *val;
10423                         MonoClass *enum_class;
10424                         MonoMethod *has_flag;
10425
10426                         CHECK_STACK (1);
10427                         --sp;
10428                         val = *sp;
10429                         CHECK_OPSIZE (5);
10430                         token = read32 (ip + 1);
10431                         klass = mini_get_class (method, token, generic_context);
10432                         CHECK_TYPELOAD (klass);
10433
10434                         mono_save_token_info (cfg, image, token, klass);
10435
10436                         context_used = mini_class_check_context_used (cfg, klass);
10437
10438                         if (generic_class_is_reference_type (cfg, klass)) {
10439                                 *sp++ = val;
10440                                 ip += 5;
10441                                 break;
10442                         }
10443
10444                         if (klass == mono_defaults.void_class)
10445                                 UNVERIFIED;
10446                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10447                                 UNVERIFIED;
10448                         /* frequent check in generic code: box (struct), brtrue */
10449
10450                         /*
10451                          * Look for:
10452                          *
10453                          *   <push int/long ptr>
10454                          *   <push int/long>
10455                          *   box MyFlags
10456                          *   constrained. MyFlags
10457                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10458                          *
10459                          * If we find this sequence and the operand types on box and constrained
10460                          * are equal, we can emit a specialized instruction sequence instead of
10461                          * the very slow HasFlag () call.
10462                          */
10463                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10464                             /* Cheap checks first. */
10465                             ip + 5 + 6 + 5 < end &&
10466                             ip [5] == CEE_PREFIX1 &&
10467                             ip [6] == CEE_CONSTRAINED_ &&
10468                             ip [11] == CEE_CALLVIRT &&
10469                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10470                             mono_class_is_enum (klass) &&
10471                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10472                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10473                             has_flag->klass == mono_defaults.enum_class &&
10474                             !strcmp (has_flag->name, "HasFlag") &&
10475                             has_flag->signature->hasthis &&
10476                             has_flag->signature->param_count == 1) {
10477                                 CHECK_TYPELOAD (enum_class);
10478
10479                                 if (enum_class == klass) {
10480                                         MonoInst *enum_this, *enum_flag;
10481
10482                                         ip += 5 + 6 + 5;
10483                                         --sp;
10484
10485                                         enum_this = sp [0];
10486                                         enum_flag = sp [1];
10487
10488                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10489                                         break;
10490                                 }
10491                         }
10492
10493                         // FIXME: LLVM can't handle the inconsistent bb linking
10494                         if (!mono_class_is_nullable (klass) &&
10495                                 !mini_is_gsharedvt_klass (klass) &&
10496                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10497                                 (ip [5] == CEE_BRTRUE ||
10498                                  ip [5] == CEE_BRTRUE_S ||
10499                                  ip [5] == CEE_BRFALSE ||
10500                                  ip [5] == CEE_BRFALSE_S)) {
10501                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10502                                 int dreg;
10503                                 MonoBasicBlock *true_bb, *false_bb;
10504
10505                                 ip += 5;
10506
10507                                 if (cfg->verbose_level > 3) {
10508                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10509                                         printf ("<box+brtrue opt>\n");
10510                                 }
10511
10512                                 switch (*ip) {
10513                                 case CEE_BRTRUE_S:
10514                                 case CEE_BRFALSE_S:
10515                                         CHECK_OPSIZE (2);
10516                                         ip++;
10517                                         target = ip + 1 + (signed char)(*ip);
10518                                         ip++;
10519                                         break;
10520                                 case CEE_BRTRUE:
10521                                 case CEE_BRFALSE:
10522                                         CHECK_OPSIZE (5);
10523                                         ip++;
10524                                         target = ip + 4 + (gint)(read32 (ip));
10525                                         ip += 4;
10526                                         break;
10527                                 default:
10528                                         g_assert_not_reached ();
10529                                 }
10530
10531                                 /*
10532                                  * We need to link both bblocks, since it is needed for handling stack
10533                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10534                                  * Branching to only one of them would lead to inconsistencies, so
10535                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10536                                  */
10537                                 GET_BBLOCK (cfg, true_bb, target);
10538                                 GET_BBLOCK (cfg, false_bb, ip);
10539
10540                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10541                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10542
10543                                 if (sp != stack_start) {
10544                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10545                                         sp = stack_start;
10546                                         CHECK_UNVERIFIABLE (cfg);
10547                                 }
10548
10549                                 if (COMPILE_LLVM (cfg)) {
10550                                         dreg = alloc_ireg (cfg);
10551                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10552                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10553
10554                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10555                                 } else {
10556                                         /* The JIT can't eliminate the iconst+compare */
10557                                         MONO_INST_NEW (cfg, ins, OP_BR);
10558                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10559                                         MONO_ADD_INS (cfg->cbb, ins);
10560                                 }
10561
10562                                 start_new_bblock = 1;
10563                                 break;
10564                         }
10565
10566                         *sp++ = handle_box (cfg, val, klass, context_used);
10567
10568                         CHECK_CFG_EXCEPTION;
10569                         ip += 5;
10570                         inline_costs += 1;
10571                         break;
10572                 }
10573                 case CEE_UNBOX: {
10574                         CHECK_STACK (1);
10575                         --sp;
10576                         CHECK_OPSIZE (5);
10577                         token = read32 (ip + 1);
10578                         klass = mini_get_class (method, token, generic_context);
10579                         CHECK_TYPELOAD (klass);
10580
10581                         mono_save_token_info (cfg, image, token, klass);
10582
10583                         context_used = mini_class_check_context_used (cfg, klass);
10584
10585                         if (mono_class_is_nullable (klass)) {
10586                                 MonoInst *val;
10587
10588                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10589                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10590
10591                                 *sp++= ins;
10592                         } else {
10593                                 ins = handle_unbox (cfg, klass, sp, context_used);
10594                                 *sp++ = ins;
10595                         }
10596                         ip += 5;
10597                         inline_costs += 2;
10598                         break;
10599                 }
10600                 case CEE_LDFLD:
10601                 case CEE_LDFLDA:
10602                 case CEE_STFLD:
10603                 case CEE_LDSFLD:
10604                 case CEE_LDSFLDA:
10605                 case CEE_STSFLD: {
10606                         MonoClassField *field;
10607 #ifndef DISABLE_REMOTING
10608                         int costs;
10609 #endif
10610                         guint foffset;
10611                         gboolean is_instance;
10612                         int op;
10613                         gpointer addr = NULL;
10614                         gboolean is_special_static;
10615                         MonoType *ftype;
10616                         MonoInst *store_val = NULL;
10617                         MonoInst *thread_ins;
10618
10619                         op = *ip;
10620                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10621                         if (is_instance) {
10622                                 if (op == CEE_STFLD) {
10623                                         CHECK_STACK (2);
10624                                         sp -= 2;
10625                                         store_val = sp [1];
10626                                 } else {
10627                                         CHECK_STACK (1);
10628                                         --sp;
10629                                 }
10630                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10631                                         UNVERIFIED;
10632                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10633                                         UNVERIFIED;
10634                         } else {
10635                                 if (op == CEE_STSFLD) {
10636                                         CHECK_STACK (1);
10637                                         sp--;
10638                                         store_val = sp [0];
10639                                 }
10640                         }
10641
10642                         CHECK_OPSIZE (5);
10643                         token = read32 (ip + 1);
10644                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10645                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10646                                 klass = field->parent;
10647                         }
10648                         else {
10649                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10650                                 CHECK_CFG_ERROR;
10651                         }
10652                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10653                                 FIELD_ACCESS_FAILURE (method, field);
10654                         mono_class_init (klass);
10655
10656                         /* if the class is Critical then transparent code cannot access it's fields */
10657                         if (!is_instance && mono_security_core_clr_enabled ())
10658                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10659
10660                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10661                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10662                         if (mono_security_core_clr_enabled ())
10663                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10664                         */
10665
10666                         ftype = mono_field_get_type (field);
10667
10668                         /*
10669                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10670                          * the static case.
10671                          */
10672                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10673                                 switch (op) {
10674                                 case CEE_LDFLD:
10675                                         op = CEE_LDSFLD;
10676                                         break;
10677                                 case CEE_STFLD:
10678                                         op = CEE_STSFLD;
10679                                         break;
10680                                 case CEE_LDFLDA:
10681                                         op = CEE_LDSFLDA;
10682                                         break;
10683                                 default:
10684                                         g_assert_not_reached ();
10685                                 }
10686                                 is_instance = FALSE;
10687                         }
10688
10689                         context_used = mini_class_check_context_used (cfg, klass);
10690
10691                         /* INSTANCE CASE */
10692
10693                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10694                         if (op == CEE_STFLD) {
10695                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10696                                         UNVERIFIED;
10697 #ifndef DISABLE_REMOTING
10698                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10699                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10700                                         MonoInst *iargs [5];
10701
10702                                         GSHAREDVT_FAILURE (op);
10703
10704                                         iargs [0] = sp [0];
10705                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10706                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10707                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10708                                                     field->offset);
10709                                         iargs [4] = sp [1];
10710
10711                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10712                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10713                                                                                            iargs, ip, cfg->real_offset, TRUE);
10714                                                 CHECK_CFG_EXCEPTION;
10715                                                 g_assert (costs > 0);
10716
10717                                                 cfg->real_offset += 5;
10718
10719                                                 inline_costs += costs;
10720                                         } else {
10721                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10722                                         }
10723                                 } else
10724 #endif
10725                                 {
10726                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10727
10728                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10729
10730                                         if (ins_flag & MONO_INST_VOLATILE) {
10731                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10732                                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10733                                         }
10734
10735                                         if (mini_is_gsharedvt_klass (klass)) {
10736                                                 MonoInst *offset_ins;
10737
10738                                                 context_used = mini_class_check_context_used (cfg, klass);
10739
10740                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10741                                                 /* The value is offset by 1 */
10742                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10743                                                 dreg = alloc_ireg_mp (cfg);
10744                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10745                                                 wbarrier_ptr_ins = ins;
10746                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10747                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10748                                         } else {
10749                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10750                                         }
10751                                         if (sp [0]->opcode != OP_LDADDR)
10752                                                 store->flags |= MONO_INST_FAULT;
10753
10754                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10755                                                 if (mini_is_gsharedvt_klass (klass)) {
10756                                                         g_assert (wbarrier_ptr_ins);
10757                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10758                                                 } else {
10759                                                         /* insert call to write barrier */
10760                                                         MonoInst *ptr;
10761                                                         int dreg;
10762
10763                                                         dreg = alloc_ireg_mp (cfg);
10764                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10765                                                         emit_write_barrier (cfg, ptr, sp [1]);
10766                                                 }
10767                                         }
10768
10769                                         store->flags |= ins_flag;
10770                                 }
10771                                 ins_flag = 0;
10772                                 ip += 5;
10773                                 break;
10774                         }
10775
10776 #ifndef DISABLE_REMOTING
10777                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10778                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10779                                 MonoInst *iargs [4];
10780
10781                                 GSHAREDVT_FAILURE (op);
10782
10783                                 iargs [0] = sp [0];
10784                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10785                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10786                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10787                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10788                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10789                                                                                    iargs, ip, cfg->real_offset, TRUE);
10790                                         CHECK_CFG_EXCEPTION;
10791                                         g_assert (costs > 0);
10792
10793                                         cfg->real_offset += 5;
10794
10795                                         *sp++ = iargs [0];
10796
10797                                         inline_costs += costs;
10798                                 } else {
10799                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10800                                         *sp++ = ins;
10801                                 }
10802                         } else
10803 #endif
10804                         if (is_instance) {
10805                                 if (sp [0]->type == STACK_VTYPE) {
10806                                         MonoInst *var;
10807
10808                                         /* Have to compute the address of the variable */
10809
10810                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10811                                         if (!var)
10812                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10813                                         else
10814                                                 g_assert (var->klass == klass);
10815
10816                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10817                                         sp [0] = ins;
10818                                 }
10819
10820                                 if (op == CEE_LDFLDA) {
10821                                         if (sp [0]->type == STACK_OBJ) {
10822                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10823                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10824                                         }
10825
10826                                         dreg = alloc_ireg_mp (cfg);
10827
10828                                         if (mini_is_gsharedvt_klass (klass)) {
10829                                                 MonoInst *offset_ins;
10830
10831                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10832                                                 /* The value is offset by 1 */
10833                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10834                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10835                                         } else {
10836                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10837                                         }
10838                                         ins->klass = mono_class_from_mono_type (field->type);
10839                                         ins->type = STACK_MP;
10840                                         *sp++ = ins;
10841                                 } else {
10842                                         MonoInst *load;
10843
10844                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10845
10846                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10847                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10848                                                 if (ins) {
10849                                                         *sp++ = ins;
10850                                                         ins_flag = 0;
10851                                                         ip += 5;
10852                                                         break;
10853                                                 }
10854                                         }
10855
10856                                         if (mini_is_gsharedvt_klass (klass)) {
10857                                                 MonoInst *offset_ins;
10858
10859                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10860                                                 /* The value is offset by 1 */
10861                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10862                                                 dreg = alloc_ireg_mp (cfg);
10863                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10864                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
10865                                         } else {
10866                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
10867                                         }
10868                                         load->flags |= ins_flag;
10869                                         if (sp [0]->opcode != OP_LDADDR)
10870                                                 load->flags |= MONO_INST_FAULT;
10871                                         *sp++ = load;
10872                                 }
10873                         }
10874
10875                         if (is_instance) {
10876                                 ins_flag = 0;
10877                                 ip += 5;
10878                                 break;
10879                         }
10880
10881                         /* STATIC CASE */
10882                         context_used = mini_class_check_context_used (cfg, klass);
10883
10884                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10885                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10886                                 CHECK_CFG_ERROR;
10887                         }
10888
10889                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10890                          * to be called here.
10891                          */
10892                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10893                                 mono_class_vtable (cfg->domain, klass);
10894                                 CHECK_TYPELOAD (klass);
10895                         }
10896                         mono_domain_lock (cfg->domain);
10897                         if (cfg->domain->special_static_fields)
10898                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10899                         mono_domain_unlock (cfg->domain);
10900
10901                         is_special_static = mono_class_field_is_special_static (field);
10902
10903                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10904                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10905                         else
10906                                 thread_ins = NULL;
10907
10908                         /* Generate IR to compute the field address */
10909                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10910                                 /*
10911                                  * Fast access to TLS data
10912                                  * Inline version of get_thread_static_data () in
10913                                  * threads.c.
10914                                  */
10915                                 guint32 offset;
10916                                 int idx, static_data_reg, array_reg, dreg;
10917
10918                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10919                                         GSHAREDVT_FAILURE (op);
10920
10921                                 static_data_reg = alloc_ireg (cfg);
10922                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10923
10924                                 if (cfg->compile_aot) {
10925                                         int offset_reg, offset2_reg, idx_reg;
10926
10927                                         /* For TLS variables, this will return the TLS offset */
10928                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10929                                         offset_reg = ins->dreg;
10930                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10931                                         idx_reg = alloc_ireg (cfg);
10932                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10933                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10934                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10935                                         array_reg = alloc_ireg (cfg);
10936                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10937                                         offset2_reg = alloc_ireg (cfg);
10938                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10939                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10940                                         dreg = alloc_ireg (cfg);
10941                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10942                                 } else {
10943                                         offset = (gsize)addr & 0x7fffffff;
10944                                         idx = offset & 0x3f;
10945
10946                                         array_reg = alloc_ireg (cfg);
10947                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10948                                         dreg = alloc_ireg (cfg);
10949                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10950                                 }
10951                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10952                                         (cfg->compile_aot && is_special_static) ||
10953                                         (context_used && is_special_static)) {
10954                                 MonoInst *iargs [2];
10955
10956                                 g_assert (field->parent);
10957                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10958                                 if (context_used) {
10959                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10960                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10961                                 } else {
10962                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10963                                 }
10964                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10965                         } else if (context_used) {
10966                                 MonoInst *static_data;
10967
10968                                 /*
10969                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10970                                         method->klass->name_space, method->klass->name, method->name,
10971                                         depth, field->offset);
10972                                 */
10973
10974                                 if (mono_class_needs_cctor_run (klass, method))
10975                                         emit_class_init (cfg, klass);
10976
10977                                 /*
10978                                  * The pointer we're computing here is
10979                                  *
10980                                  *   super_info.static_data + field->offset
10981                                  */
10982                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10983                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10984
10985                                 if (mini_is_gsharedvt_klass (klass)) {
10986                                         MonoInst *offset_ins;
10987
10988                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10989                                         /* The value is offset by 1 */
10990                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10991                                         dreg = alloc_ireg_mp (cfg);
10992                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10993                                 } else if (field->offset == 0) {
10994                                         ins = static_data;
10995                                 } else {
10996                                         int addr_reg = mono_alloc_preg (cfg);
10997                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10998                                 }
10999                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11000                                 MonoInst *iargs [2];
11001
11002                                 g_assert (field->parent);
11003                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11004                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11005                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11006                         } else {
11007                                 MonoVTable *vtable = NULL;
11008
11009                                 if (!cfg->compile_aot)
11010                                         vtable = mono_class_vtable (cfg->domain, klass);
11011                                 CHECK_TYPELOAD (klass);
11012
11013                                 if (!addr) {
11014                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11015                                                 if (!(g_slist_find (class_inits, klass))) {
11016                                                         emit_class_init (cfg, klass);
11017                                                         if (cfg->verbose_level > 2)
11018                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11019                                                         class_inits = g_slist_prepend (class_inits, klass);
11020                                                 }
11021                                         } else {
11022                                                 if (cfg->run_cctors) {
11023                                                         /* This makes so that inline cannot trigger */
11024                                                         /* .cctors: too many apps depend on them */
11025                                                         /* running with a specific order... */
11026                                                         g_assert (vtable);
11027                                                         if (! vtable->initialized)
11028                                                                 INLINE_FAILURE ("class init");
11029                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11030                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11031                                                                 goto exception_exit;
11032                                                         }
11033                                                 }
11034                                         }
11035                                         if (cfg->compile_aot)
11036                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11037                                         else {
11038                                                 g_assert (vtable);
11039                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11040                                                 g_assert (addr);
11041                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11042                                         }
11043                                 } else {
11044                                         MonoInst *iargs [1];
11045                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11046                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11047                                 }
11048                         }
11049
11050                         /* Generate IR to do the actual load/store operation */
11051
11052                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11053                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11054                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11055                         }
11056
11057                         if (op == CEE_LDSFLDA) {
11058                                 ins->klass = mono_class_from_mono_type (ftype);
11059                                 ins->type = STACK_PTR;
11060                                 *sp++ = ins;
11061                         } else if (op == CEE_STSFLD) {
11062                                 MonoInst *store;
11063
11064                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11065                                 store->flags |= ins_flag;
11066                         } else {
11067                                 gboolean is_const = FALSE;
11068                                 MonoVTable *vtable = NULL;
11069                                 gpointer addr = NULL;
11070
11071                                 if (!context_used) {
11072                                         vtable = mono_class_vtable (cfg->domain, klass);
11073                                         CHECK_TYPELOAD (klass);
11074                                 }
11075                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11076                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11077                                         int ro_type = ftype->type;
11078                                         if (!addr)
11079                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11080                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11081                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11082                                         }
11083
11084                                         GSHAREDVT_FAILURE (op);
11085
11086                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11087                                         is_const = TRUE;
11088                                         switch (ro_type) {
11089                                         case MONO_TYPE_BOOLEAN:
11090                                         case MONO_TYPE_U1:
11091                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11092                                                 sp++;
11093                                                 break;
11094                                         case MONO_TYPE_I1:
11095                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11096                                                 sp++;
11097                                                 break;
11098                                         case MONO_TYPE_CHAR:
11099                                         case MONO_TYPE_U2:
11100                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11101                                                 sp++;
11102                                                 break;
11103                                         case MONO_TYPE_I2:
11104                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11105                                                 sp++;
11106                                                 break;
11107                                                 break;
11108                                         case MONO_TYPE_I4:
11109                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11110                                                 sp++;
11111                                                 break;
11112                                         case MONO_TYPE_U4:
11113                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11114                                                 sp++;
11115                                                 break;
11116                                         case MONO_TYPE_I:
11117                                         case MONO_TYPE_U:
11118                                         case MONO_TYPE_PTR:
11119                                         case MONO_TYPE_FNPTR:
11120                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11121                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11122                                                 sp++;
11123                                                 break;
11124                                         case MONO_TYPE_STRING:
11125                                         case MONO_TYPE_OBJECT:
11126                                         case MONO_TYPE_CLASS:
11127                                         case MONO_TYPE_SZARRAY:
11128                                         case MONO_TYPE_ARRAY:
11129                                                 if (!mono_gc_is_moving ()) {
11130                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11131                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11132                                                         sp++;
11133                                                 } else {
11134                                                         is_const = FALSE;
11135                                                 }
11136                                                 break;
11137                                         case MONO_TYPE_I8:
11138                                         case MONO_TYPE_U8:
11139                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11140                                                 sp++;
11141                                                 break;
11142                                         case MONO_TYPE_R4:
11143                                         case MONO_TYPE_R8:
11144                                         case MONO_TYPE_VALUETYPE:
11145                                         default:
11146                                                 is_const = FALSE;
11147                                                 break;
11148                                         }
11149                                 }
11150
11151                                 if (!is_const) {
11152                                         MonoInst *load;
11153
11154                                         CHECK_STACK_OVF (1);
11155
11156                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11157                                         load->flags |= ins_flag;
11158                                         ins_flag = 0;
11159                                         *sp++ = load;
11160                                 }
11161                         }
11162
11163                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11164                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11165                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11166                         }
11167
11168                         ins_flag = 0;
11169                         ip += 5;
11170                         break;
11171                 }
11172                 case CEE_STOBJ:
11173                         CHECK_STACK (2);
11174                         sp -= 2;
11175                         CHECK_OPSIZE (5);
11176                         token = read32 (ip + 1);
11177                         klass = mini_get_class (method, token, generic_context);
11178                         CHECK_TYPELOAD (klass);
11179                         if (ins_flag & MONO_INST_VOLATILE) {
11180                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11181                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11182                         }
11183                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11184                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11185                         ins->flags |= ins_flag;
11186                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11187                                 generic_class_is_reference_type (cfg, klass) && !MONO_INS_IS_PCONST_NULL (sp [1])) {
11188                                 /* insert call to write barrier */
11189                                 emit_write_barrier (cfg, sp [0], sp [1]);
11190                         }
11191                         ins_flag = 0;
11192                         ip += 5;
11193                         inline_costs += 1;
11194                         break;
11195
11196                         /*
11197                          * Array opcodes
11198                          */
11199                 case CEE_NEWARR: {
11200                         MonoInst *len_ins;
11201                         const char *data_ptr;
11202                         int data_size = 0;
11203                         guint32 field_token;
11204
11205                         CHECK_STACK (1);
11206                         --sp;
11207
11208                         CHECK_OPSIZE (5);
11209                         token = read32 (ip + 1);
11210
11211                         klass = mini_get_class (method, token, generic_context);
11212                         CHECK_TYPELOAD (klass);
11213                         if (klass->byval_arg.type == MONO_TYPE_VOID)
11214                                 UNVERIFIED;
11215
11216                         context_used = mini_class_check_context_used (cfg, klass);
11217
11218                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11219                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11220                                 ins->sreg1 = sp [0]->dreg;
11221                                 ins->type = STACK_I4;
11222                                 ins->dreg = alloc_ireg (cfg);
11223                                 MONO_ADD_INS (cfg->cbb, ins);
11224                                 *sp = mono_decompose_opcode (cfg, ins);
11225                         }
11226
11227                         if (context_used) {
11228                                 MonoInst *args [3];
11229                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11230                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11231
11232                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11233
11234                                 /* vtable */
11235                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
11236                                         array_class, MONO_RGCTX_INFO_VTABLE);
11237                                 /* array len */
11238                                 args [1] = sp [0];
11239
11240                                 if (managed_alloc)
11241                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11242                                 else
11243                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11244                         } else {
11245                                 if (cfg->opt & MONO_OPT_SHARED) {
11246                                         /* Decompose now to avoid problems with references to the domainvar */
11247                                         MonoInst *iargs [3];
11248
11249                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11250                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11251                                         iargs [2] = sp [0];
11252
11253                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11254                                 } else {
11255                                         /* Decompose later since it is needed by abcrem */
11256                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11257                                         mono_class_vtable (cfg->domain, array_type);
11258                                         CHECK_TYPELOAD (array_type);
11259
11260                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11261                                         ins->dreg = alloc_ireg_ref (cfg);
11262                                         ins->sreg1 = sp [0]->dreg;
11263                                         ins->inst_newa_class = klass;
11264                                         ins->type = STACK_OBJ;
11265                                         ins->klass = array_type;
11266                                         MONO_ADD_INS (cfg->cbb, ins);
11267                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11268                                         cfg->cbb->has_array_access = TRUE;
11269
11270                                         /* Needed so mono_emit_load_get_addr () gets called */
11271                                         mono_get_got_var (cfg);
11272                                 }
11273                         }
11274
11275                         len_ins = sp [0];
11276                         ip += 5;
11277                         *sp++ = ins;
11278                         inline_costs += 1;
11279
11280                         /*
11281                          * we inline/optimize the initialization sequence if possible.
11282                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11283                          * for small sizes open code the memcpy
11284                          * ensure the rva field is big enough
11285                          */
11286                         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))) {
11287                                 MonoMethod *memcpy_method = get_memcpy_method ();
11288                                 MonoInst *iargs [3];
11289                                 int add_reg = alloc_ireg_mp (cfg);
11290
11291                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11292                                 if (cfg->compile_aot) {
11293                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11294                                 } else {
11295                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11296                                 }
11297                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11298                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11299                                 ip += 11;
11300                         }
11301
11302                         break;
11303                 }
11304                 case CEE_LDLEN:
11305                         CHECK_STACK (1);
11306                         --sp;
11307                         if (sp [0]->type != STACK_OBJ)
11308                                 UNVERIFIED;
11309
11310                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11311                         ins->dreg = alloc_preg (cfg);
11312                         ins->sreg1 = sp [0]->dreg;
11313                         ins->type = STACK_I4;
11314                         /* This flag will be inherited by the decomposition */
11315                         ins->flags |= MONO_INST_FAULT;
11316                         MONO_ADD_INS (cfg->cbb, ins);
11317                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11318                         cfg->cbb->has_array_access = TRUE;
11319                         ip ++;
11320                         *sp++ = ins;
11321                         break;
11322                 case CEE_LDELEMA:
11323                         CHECK_STACK (2);
11324                         sp -= 2;
11325                         CHECK_OPSIZE (5);
11326                         if (sp [0]->type != STACK_OBJ)
11327                                 UNVERIFIED;
11328
11329                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11330
11331                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11332                         CHECK_TYPELOAD (klass);
11333                         /* we need to make sure that this array is exactly the type it needs
11334                          * to be for correctness. the wrappers are lax with their usage
11335                          * so we need to ignore them here
11336                          */
11337                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11338                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11339                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11340                                 CHECK_TYPELOAD (array_class);
11341                         }
11342
11343                         readonly = FALSE;
11344                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11345                         *sp++ = ins;
11346                         ip += 5;
11347                         break;
11348                 case CEE_LDELEM:
11349                 case CEE_LDELEM_I1:
11350                 case CEE_LDELEM_U1:
11351                 case CEE_LDELEM_I2:
11352                 case CEE_LDELEM_U2:
11353                 case CEE_LDELEM_I4:
11354                 case CEE_LDELEM_U4:
11355                 case CEE_LDELEM_I8:
11356                 case CEE_LDELEM_I:
11357                 case CEE_LDELEM_R4:
11358                 case CEE_LDELEM_R8:
11359                 case CEE_LDELEM_REF: {
11360                         MonoInst *addr;
11361
11362                         CHECK_STACK (2);
11363                         sp -= 2;
11364
11365                         if (*ip == CEE_LDELEM) {
11366                                 CHECK_OPSIZE (5);
11367                                 token = read32 (ip + 1);
11368                                 klass = mini_get_class (method, token, generic_context);
11369                                 CHECK_TYPELOAD (klass);
11370                                 mono_class_init (klass);
11371                         }
11372                         else
11373                                 klass = array_access_to_klass (*ip);
11374
11375                         if (sp [0]->type != STACK_OBJ)
11376                                 UNVERIFIED;
11377
11378                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11379
11380                         if (mini_is_gsharedvt_variable_klass (klass)) {
11381                                 // FIXME-VT: OP_ICONST optimization
11382                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11383                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11384                                 ins->opcode = OP_LOADV_MEMBASE;
11385                         } else if (sp [1]->opcode == OP_ICONST) {
11386                                 int array_reg = sp [0]->dreg;
11387                                 int index_reg = sp [1]->dreg;
11388                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11389
11390                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11391                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11392
11393                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11394                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11395                         } else {
11396                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11397                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11398                         }
11399                         *sp++ = ins;
11400                         if (*ip == CEE_LDELEM)
11401                                 ip += 5;
11402                         else
11403                                 ++ip;
11404                         break;
11405                 }
11406                 case CEE_STELEM_I:
11407                 case CEE_STELEM_I1:
11408                 case CEE_STELEM_I2:
11409                 case CEE_STELEM_I4:
11410                 case CEE_STELEM_I8:
11411                 case CEE_STELEM_R4:
11412                 case CEE_STELEM_R8:
11413                 case CEE_STELEM_REF:
11414                 case CEE_STELEM: {
11415                         CHECK_STACK (3);
11416                         sp -= 3;
11417
11418                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11419
11420                         if (*ip == CEE_STELEM) {
11421                                 CHECK_OPSIZE (5);
11422                                 token = read32 (ip + 1);
11423                                 klass = mini_get_class (method, token, generic_context);
11424                                 CHECK_TYPELOAD (klass);
11425                                 mono_class_init (klass);
11426                         }
11427                         else
11428                                 klass = array_access_to_klass (*ip);
11429
11430                         if (sp [0]->type != STACK_OBJ)
11431                                 UNVERIFIED;
11432
11433                         emit_array_store (cfg, klass, sp, TRUE);
11434
11435                         if (*ip == CEE_STELEM)
11436                                 ip += 5;
11437                         else
11438                                 ++ip;
11439                         inline_costs += 1;
11440                         break;
11441                 }
11442                 case CEE_CKFINITE: {
11443                         CHECK_STACK (1);
11444                         --sp;
11445
11446                         if (cfg->llvm_only) {
11447                                 MonoInst *iargs [1];
11448
11449                                 iargs [0] = sp [0];
11450                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11451                         } else  {
11452                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11453                                 ins->sreg1 = sp [0]->dreg;
11454                                 ins->dreg = alloc_freg (cfg);
11455                                 ins->type = STACK_R8;
11456                                 MONO_ADD_INS (cfg->cbb, ins);
11457
11458                                 *sp++ = mono_decompose_opcode (cfg, ins);
11459                         }
11460
11461                         ++ip;
11462                         break;
11463                 }
11464                 case CEE_REFANYVAL: {
11465                         MonoInst *src_var, *src;
11466
11467                         int klass_reg = alloc_preg (cfg);
11468                         int dreg = alloc_preg (cfg);
11469
11470                         GSHAREDVT_FAILURE (*ip);
11471
11472                         CHECK_STACK (1);
11473                         MONO_INST_NEW (cfg, ins, *ip);
11474                         --sp;
11475                         CHECK_OPSIZE (5);
11476                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11477                         CHECK_TYPELOAD (klass);
11478
11479                         context_used = mini_class_check_context_used (cfg, klass);
11480
11481                         // FIXME:
11482                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11483                         if (!src_var)
11484                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11485                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11486                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11487
11488                         if (context_used) {
11489                                 MonoInst *klass_ins;
11490
11491                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11492                                                 klass, MONO_RGCTX_INFO_KLASS);
11493
11494                                 // FIXME:
11495                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11496                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11497                         } else {
11498                                 mini_emit_class_check (cfg, klass_reg, klass);
11499                         }
11500                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11501                         ins->type = STACK_MP;
11502                         ins->klass = klass;
11503                         *sp++ = ins;
11504                         ip += 5;
11505                         break;
11506                 }
11507                 case CEE_MKREFANY: {
11508                         MonoInst *loc, *addr;
11509
11510                         GSHAREDVT_FAILURE (*ip);
11511
11512                         CHECK_STACK (1);
11513                         MONO_INST_NEW (cfg, ins, *ip);
11514                         --sp;
11515                         CHECK_OPSIZE (5);
11516                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11517                         CHECK_TYPELOAD (klass);
11518
11519                         context_used = mini_class_check_context_used (cfg, klass);
11520
11521                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11522                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11523
11524                         if (context_used) {
11525                                 MonoInst *const_ins;
11526                                 int type_reg = alloc_preg (cfg);
11527
11528                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11529                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11530                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11531                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11532                         } else {
11533                                 int const_reg = alloc_preg (cfg);
11534                                 int type_reg = alloc_preg (cfg);
11535
11536                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11537                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11538                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11539                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11540                         }
11541                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11542
11543                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11544                         ins->type = STACK_VTYPE;
11545                         ins->klass = mono_defaults.typed_reference_class;
11546                         *sp++ = ins;
11547                         ip += 5;
11548                         break;
11549                 }
11550                 case CEE_LDTOKEN: {
11551                         gpointer handle;
11552                         MonoClass *handle_class;
11553
11554                         CHECK_STACK_OVF (1);
11555
11556                         CHECK_OPSIZE (5);
11557                         n = read32 (ip + 1);
11558
11559                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11560                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11561                                 handle = mono_method_get_wrapper_data (method, n);
11562                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11563                                 if (handle_class == mono_defaults.typehandle_class)
11564                                         handle = &((MonoClass*)handle)->byval_arg;
11565                         }
11566                         else {
11567                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11568                                 CHECK_CFG_ERROR;
11569                         }
11570                         if (!handle)
11571                                 LOAD_ERROR;
11572                         mono_class_init (handle_class);
11573                         if (cfg->gshared) {
11574                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11575                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11576                                         /* This case handles ldtoken
11577                                            of an open type, like for
11578                                            typeof(Gen<>). */
11579                                         context_used = 0;
11580                                 } else if (handle_class == mono_defaults.typehandle_class) {
11581                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11582                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11583                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11584                                 else if (handle_class == mono_defaults.methodhandle_class)
11585                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11586                                 else
11587                                         g_assert_not_reached ();
11588                         }
11589
11590                         if ((cfg->opt & MONO_OPT_SHARED) &&
11591                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11592                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11593                                 MonoInst *addr, *vtvar, *iargs [3];
11594                                 int method_context_used;
11595
11596                                 method_context_used = mini_method_check_context_used (cfg, method);
11597
11598                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11599
11600                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11601                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11602                                 if (method_context_used) {
11603                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11604                                                 method, MONO_RGCTX_INFO_METHOD);
11605                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11606                                 } else {
11607                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11608                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11609                                 }
11610                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11611
11612                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11613
11614                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11615                         } else {
11616                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11617                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11618                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11619                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11620                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11621                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11622
11623                                         mono_class_init (tclass);
11624                                         if (context_used) {
11625                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11626                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11627                                         } else if (cfg->compile_aot) {
11628                                                 if (method->wrapper_type) {
11629                                                         error_init (&error); //got to do it since there are multiple conditionals below
11630                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11631                                                                 /* Special case for static synchronized wrappers */
11632                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11633                                                         } else {
11634                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11635                                                                 /* FIXME: n is not a normal token */
11636                                                                 DISABLE_AOT (cfg);
11637                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11638                                                         }
11639                                                 } else {
11640                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11641                                                 }
11642                                         } else {
11643                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11644                                                 CHECK_CFG_ERROR;
11645                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11646                                         }
11647                                         ins->type = STACK_OBJ;
11648                                         ins->klass = cmethod->klass;
11649                                         ip += 5;
11650                                 } else {
11651                                         MonoInst *addr, *vtvar;
11652
11653                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11654
11655                                         if (context_used) {
11656                                                 if (handle_class == mono_defaults.typehandle_class) {
11657                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11658                                                                         mono_class_from_mono_type ((MonoType *)handle),
11659                                                                         MONO_RGCTX_INFO_TYPE);
11660                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11661                                                         ins = emit_get_rgctx_method (cfg, context_used,
11662                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11663                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11664                                                         ins = emit_get_rgctx_field (cfg, context_used,
11665                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11666                                                 } else {
11667                                                         g_assert_not_reached ();
11668                                                 }
11669                                         } else if (cfg->compile_aot) {
11670                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11671                                         } else {
11672                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11673                                         }
11674                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11675                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11676                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11677                                 }
11678                         }
11679
11680                         *sp++ = ins;
11681                         ip += 5;
11682                         break;
11683                 }
11684                 case CEE_THROW:
11685                         CHECK_STACK (1);
11686                         if (sp [-1]->type != STACK_OBJ)
11687                                 UNVERIFIED;
11688
11689                         MONO_INST_NEW (cfg, ins, OP_THROW);
11690                         --sp;
11691                         ins->sreg1 = sp [0]->dreg;
11692                         ip++;
11693                         cfg->cbb->out_of_line = TRUE;
11694                         MONO_ADD_INS (cfg->cbb, ins);
11695                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11696                         MONO_ADD_INS (cfg->cbb, ins);
11697                         sp = stack_start;
11698
11699                         link_bblock (cfg, cfg->cbb, end_bblock);
11700                         start_new_bblock = 1;
11701                         /* This can complicate code generation for llvm since the return value might not be defined */
11702                         if (COMPILE_LLVM (cfg))
11703                                 INLINE_FAILURE ("throw");
11704                         break;
11705                 case CEE_ENDFINALLY:
11706                         if (!ip_in_finally_clause (cfg, ip - header->code))
11707                                 UNVERIFIED;
11708                         /* mono_save_seq_point_info () depends on this */
11709                         if (sp != stack_start)
11710                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11711                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11712                         MONO_ADD_INS (cfg->cbb, ins);
11713                         ip++;
11714                         start_new_bblock = 1;
11715
11716                         /*
11717                          * Control will leave the method so empty the stack, otherwise
11718                          * the next basic block will start with a nonempty stack.
11719                          */
11720                         while (sp != stack_start) {
11721                                 sp--;
11722                         }
11723                         break;
11724                 case CEE_LEAVE:
11725                 case CEE_LEAVE_S: {
11726                         GList *handlers;
11727
11728                         if (*ip == CEE_LEAVE) {
11729                                 CHECK_OPSIZE (5);
11730                                 target = ip + 5 + (gint32)read32(ip + 1);
11731                         } else {
11732                                 CHECK_OPSIZE (2);
11733                                 target = ip + 2 + (signed char)(ip [1]);
11734                         }
11735
11736                         /* empty the stack */
11737                         while (sp != stack_start) {
11738                                 sp--;
11739                         }
11740
11741                         /*
11742                          * If this leave statement is in a catch block, check for a
11743                          * pending exception, and rethrow it if necessary.
11744                          * We avoid doing this in runtime invoke wrappers, since those are called
11745                          * by native code which excepts the wrapper to catch all exceptions.
11746                          */
11747                         for (i = 0; i < header->num_clauses; ++i) {
11748                                 MonoExceptionClause *clause = &header->clauses [i];
11749
11750                                 /*
11751                                  * Use <= in the final comparison to handle clauses with multiple
11752                                  * leave statements, like in bug #78024.
11753                                  * The ordering of the exception clauses guarantees that we find the
11754                                  * innermost clause.
11755                                  */
11756                                 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) {
11757                                         MonoInst *exc_ins;
11758                                         MonoBasicBlock *dont_throw;
11759
11760                                         /*
11761                                           MonoInst *load;
11762
11763                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11764                                         */
11765
11766                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11767
11768                                         NEW_BBLOCK (cfg, dont_throw);
11769
11770                                         /*
11771                                          * Currently, we always rethrow the abort exception, despite the
11772                                          * fact that this is not correct. See thread6.cs for an example.
11773                                          * But propagating the abort exception is more important than
11774                                          * getting the sematics right.
11775                                          */
11776                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11777                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11778                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11779
11780                                         MONO_START_BB (cfg, dont_throw);
11781                                 }
11782                         }
11783
11784 #ifdef ENABLE_LLVM
11785                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11786 #endif
11787
11788                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11789                                 GList *tmp;
11790                                 MonoExceptionClause *clause;
11791
11792                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11793                                         clause = (MonoExceptionClause *)tmp->data;
11794                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11795                                         g_assert (tblock);
11796                                         link_bblock (cfg, cfg->cbb, tblock);
11797                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11798                                         ins->inst_target_bb = tblock;
11799                                         ins->inst_eh_block = clause;
11800                                         MONO_ADD_INS (cfg->cbb, ins);
11801                                         cfg->cbb->has_call_handler = 1;
11802                                         if (COMPILE_LLVM (cfg)) {
11803                                                 MonoBasicBlock *target_bb;
11804
11805                                                 /*
11806                                                  * Link the finally bblock with the target, since it will
11807                                                  * conceptually branch there.
11808                                                  */
11809                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11810                                                 GET_BBLOCK (cfg, target_bb, target);
11811                                                 link_bblock (cfg, tblock, target_bb);
11812                                         }
11813                                 }
11814                                 g_list_free (handlers);
11815                         }
11816
11817                         MONO_INST_NEW (cfg, ins, OP_BR);
11818                         MONO_ADD_INS (cfg->cbb, ins);
11819                         GET_BBLOCK (cfg, tblock, target);
11820                         link_bblock (cfg, cfg->cbb, tblock);
11821                         ins->inst_target_bb = tblock;
11822
11823                         start_new_bblock = 1;
11824
11825                         if (*ip == CEE_LEAVE)
11826                                 ip += 5;
11827                         else
11828                                 ip += 2;
11829
11830                         break;
11831                 }
11832
11833                         /*
11834                          * Mono specific opcodes
11835                          */
11836                 case MONO_CUSTOM_PREFIX: {
11837
11838                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11839
11840                         CHECK_OPSIZE (2);
11841                         switch (ip [1]) {
11842                         case CEE_MONO_ICALL: {
11843                                 gpointer func;
11844                                 MonoJitICallInfo *info;
11845
11846                                 token = read32 (ip + 2);
11847                                 func = mono_method_get_wrapper_data (method, token);
11848                                 info = mono_find_jit_icall_by_addr (func);
11849                                 if (!info)
11850                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11851                                 g_assert (info);
11852
11853                                 CHECK_STACK (info->sig->param_count);
11854                                 sp -= info->sig->param_count;
11855
11856                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11857                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11858                                         *sp++ = ins;
11859
11860                                 ip += 6;
11861                                 inline_costs += 10 * num_calls++;
11862
11863                                 break;
11864                         }
11865                         case CEE_MONO_LDPTR_CARD_TABLE:
11866                         case CEE_MONO_LDPTR_NURSERY_START:
11867                         case CEE_MONO_LDPTR_NURSERY_BITS:
11868                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11869                                 CHECK_STACK_OVF (1);
11870
11871                                 switch (ip [1]) {
11872                                         case CEE_MONO_LDPTR_CARD_TABLE:
11873                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11874                                                 break;
11875                                         case CEE_MONO_LDPTR_NURSERY_START:
11876                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11877                                                 break;
11878                                         case CEE_MONO_LDPTR_NURSERY_BITS:
11879                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11880                                                 break;
11881                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11882                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11883                                                 break;
11884                                 }
11885
11886                                 *sp++ = ins;
11887                                 ip += 2;
11888                                 inline_costs += 10 * num_calls++;
11889                                 break;
11890                         }
11891                         case CEE_MONO_LDPTR: {
11892                                 gpointer ptr;
11893
11894                                 CHECK_STACK_OVF (1);
11895                                 CHECK_OPSIZE (6);
11896                                 token = read32 (ip + 2);
11897
11898                                 ptr = mono_method_get_wrapper_data (method, token);
11899                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11900                                 *sp++ = ins;
11901                                 ip += 6;
11902                                 inline_costs += 10 * num_calls++;
11903                                 /* Can't embed random pointers into AOT code */
11904                                 DISABLE_AOT (cfg);
11905                                 break;
11906                         }
11907                         case CEE_MONO_JIT_ICALL_ADDR: {
11908                                 MonoJitICallInfo *callinfo;
11909                                 gpointer ptr;
11910
11911                                 CHECK_STACK_OVF (1);
11912                                 CHECK_OPSIZE (6);
11913                                 token = read32 (ip + 2);
11914
11915                                 ptr = mono_method_get_wrapper_data (method, token);
11916                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11917                                 g_assert (callinfo);
11918                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11919                                 *sp++ = ins;
11920                                 ip += 6;
11921                                 inline_costs += 10 * num_calls++;
11922                                 break;
11923                         }
11924                         case CEE_MONO_ICALL_ADDR: {
11925                                 MonoMethod *cmethod;
11926                                 gpointer ptr;
11927
11928                                 CHECK_STACK_OVF (1);
11929                                 CHECK_OPSIZE (6);
11930                                 token = read32 (ip + 2);
11931
11932                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11933
11934                                 if (cfg->compile_aot) {
11935                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11936                                                 /*
11937                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11938                                                  * before the call, its not needed when using direct pinvoke.
11939                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11940                                                  * on platforms which don't support dlopen ().
11941                                                  */
11942                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11943                                         } else {
11944                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11945                                         }
11946                                 } else {
11947                                         ptr = mono_lookup_internal_call (cmethod);
11948                                         g_assert (ptr);
11949                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11950                                 }
11951                                 *sp++ = ins;
11952                                 ip += 6;
11953                                 break;
11954                         }
11955                         case CEE_MONO_VTADDR: {
11956                                 MonoInst *src_var, *src;
11957
11958                                 CHECK_STACK (1);
11959                                 --sp;
11960
11961                                 // FIXME:
11962                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11963                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11964                                 *sp++ = src;
11965                                 ip += 2;
11966                                 break;
11967                         }
11968                         case CEE_MONO_NEWOBJ: {
11969                                 MonoInst *iargs [2];
11970
11971                                 CHECK_STACK_OVF (1);
11972                                 CHECK_OPSIZE (6);
11973                                 token = read32 (ip + 2);
11974                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11975                                 mono_class_init (klass);
11976                                 NEW_DOMAINCONST (cfg, iargs [0]);
11977                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11978                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11979                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11980                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11981                                 ip += 6;
11982                                 inline_costs += 10 * num_calls++;
11983                                 break;
11984                         }
11985                         case CEE_MONO_OBJADDR:
11986                                 CHECK_STACK (1);
11987                                 --sp;
11988                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11989                                 ins->dreg = alloc_ireg_mp (cfg);
11990                                 ins->sreg1 = sp [0]->dreg;
11991                                 ins->type = STACK_MP;
11992                                 MONO_ADD_INS (cfg->cbb, ins);
11993                                 *sp++ = ins;
11994                                 ip += 2;
11995                                 break;
11996                         case CEE_MONO_LDNATIVEOBJ:
11997                                 /*
11998                                  * Similar to LDOBJ, but instead load the unmanaged
11999                                  * representation of the vtype to the stack.
12000                                  */
12001                                 CHECK_STACK (1);
12002                                 CHECK_OPSIZE (6);
12003                                 --sp;
12004                                 token = read32 (ip + 2);
12005                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12006                                 g_assert (klass->valuetype);
12007                                 mono_class_init (klass);
12008
12009                                 {
12010                                         MonoInst *src, *dest, *temp;
12011
12012                                         src = sp [0];
12013                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12014                                         temp->backend.is_pinvoke = 1;
12015                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12016                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12017
12018                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12019                                         dest->type = STACK_VTYPE;
12020                                         dest->klass = klass;
12021
12022                                         *sp ++ = dest;
12023                                         ip += 6;
12024                                 }
12025                                 break;
12026                         case CEE_MONO_RETOBJ: {
12027                                 /*
12028                                  * Same as RET, but return the native representation of a vtype
12029                                  * to the caller.
12030                                  */
12031                                 g_assert (cfg->ret);
12032                                 g_assert (mono_method_signature (method)->pinvoke);
12033                                 CHECK_STACK (1);
12034                                 --sp;
12035
12036                                 CHECK_OPSIZE (6);
12037                                 token = read32 (ip + 2);
12038                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12039
12040                                 if (!cfg->vret_addr) {
12041                                         g_assert (cfg->ret_var_is_local);
12042
12043                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12044                                 } else {
12045                                         EMIT_NEW_RETLOADA (cfg, ins);
12046                                 }
12047                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12048
12049                                 if (sp != stack_start)
12050                                         UNVERIFIED;
12051
12052                                 MONO_INST_NEW (cfg, ins, OP_BR);
12053                                 ins->inst_target_bb = end_bblock;
12054                                 MONO_ADD_INS (cfg->cbb, ins);
12055                                 link_bblock (cfg, cfg->cbb, end_bblock);
12056                                 start_new_bblock = 1;
12057                                 ip += 6;
12058                                 break;
12059                         }
12060                         case CEE_MONO_SAVE_LMF:
12061                         case CEE_MONO_RESTORE_LMF:
12062                                 ip += 2;
12063                                 break;
12064                         case CEE_MONO_CLASSCONST:
12065                                 CHECK_STACK_OVF (1);
12066                                 CHECK_OPSIZE (6);
12067                                 token = read32 (ip + 2);
12068                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12069                                 *sp++ = ins;
12070                                 ip += 6;
12071                                 inline_costs += 10 * num_calls++;
12072                                 break;
12073                         case CEE_MONO_NOT_TAKEN:
12074                                 cfg->cbb->out_of_line = TRUE;
12075                                 ip += 2;
12076                                 break;
12077                         case CEE_MONO_TLS: {
12078                                 MonoTlsKey key;
12079
12080                                 CHECK_STACK_OVF (1);
12081                                 CHECK_OPSIZE (6);
12082                                 key = (MonoTlsKey)read32 (ip + 2);
12083                                 g_assert (key < TLS_KEY_NUM);
12084
12085                                 ins = mono_create_tls_get (cfg, key);
12086                                 g_assert (ins);
12087                                 ins->type = STACK_PTR;
12088                                 *sp++ = ins;
12089                                 ip += 6;
12090                                 break;
12091                         }
12092                         case CEE_MONO_DYN_CALL: {
12093                                 MonoCallInst *call;
12094
12095                                 /* It would be easier to call a trampoline, but that would put an
12096                                  * extra frame on the stack, confusing exception handling. So
12097                                  * implement it inline using an opcode for now.
12098                                  */
12099
12100                                 if (!cfg->dyn_call_var) {
12101                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12102                                         /* prevent it from being register allocated */
12103                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12104                                 }
12105
12106                                 /* Has to use a call inst since it local regalloc expects it */
12107                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12108                                 ins = (MonoInst*)call;
12109                                 sp -= 2;
12110                                 ins->sreg1 = sp [0]->dreg;
12111                                 ins->sreg2 = sp [1]->dreg;
12112                                 MONO_ADD_INS (cfg->cbb, ins);
12113
12114                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12115
12116                                 ip += 2;
12117                                 inline_costs += 10 * num_calls++;
12118
12119                                 break;
12120                         }
12121                         case CEE_MONO_MEMORY_BARRIER: {
12122                                 CHECK_OPSIZE (6);
12123                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12124                                 ip += 6;
12125                                 break;
12126                         }
12127                         case CEE_MONO_ATOMIC_STORE_I4: {
12128                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12129
12130                                 CHECK_OPSIZE (6);
12131                                 CHECK_STACK (2);
12132                                 sp -= 2;
12133
12134                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12135                                 ins->dreg = sp [0]->dreg;
12136                                 ins->sreg1 = sp [1]->dreg;
12137                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12138                                 MONO_ADD_INS (cfg->cbb, ins);
12139
12140                                 ip += 6;
12141                                 break;
12142                         }
12143                         case CEE_MONO_JIT_ATTACH: {
12144                                 MonoInst *args [16], *domain_ins;
12145                                 MonoInst *ad_ins, *jit_tls_ins;
12146                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12147
12148                                 g_assert (!mono_threads_is_coop_enabled ());
12149
12150                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12151
12152                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12153                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12154
12155                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12156                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
12157
12158                                 if (ad_ins && jit_tls_ins) {
12159                                         NEW_BBLOCK (cfg, next_bb);
12160                                         NEW_BBLOCK (cfg, call_bb);
12161
12162                                         if (cfg->compile_aot) {
12163                                                 /* AOT code is only used in the root domain */
12164                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12165                                         } else {
12166                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12167                                         }
12168                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12169                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12170
12171                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12172                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12173
12174                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12175                                         MONO_START_BB (cfg, call_bb);
12176                                 }
12177
12178                                 /* AOT code is only used in the root domain */
12179                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12180                                 if (cfg->compile_aot) {
12181                                         MonoInst *addr;
12182
12183                                         /*
12184                                          * This is called on unattached threads, so it cannot go through the trampoline
12185                                          * infrastructure. Use an indirect call through a got slot initialized at load time
12186                                          * instead.
12187                                          */
12188                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
12189                                         ins = mono_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
12190                                 } else {
12191                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12192                                 }
12193                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12194
12195                                 if (next_bb)
12196                                         MONO_START_BB (cfg, next_bb);
12197
12198                                 ip += 2;
12199                                 break;
12200                         }
12201                         case CEE_MONO_JIT_DETACH: {
12202                                 MonoInst *args [16];
12203
12204                                 /* Restore the original domain */
12205                                 dreg = alloc_ireg (cfg);
12206                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12207                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12208                                 ip += 2;
12209                                 break;
12210                         }
12211                         case CEE_MONO_CALLI_EXTRA_ARG: {
12212                                 MonoInst *addr;
12213                                 MonoMethodSignature *fsig;
12214                                 MonoInst *arg;
12215
12216                                 /*
12217                                  * This is the same as CEE_CALLI, but passes an additional argument
12218                                  * to the called method in llvmonly mode.
12219                                  * This is only used by delegate invoke wrappers to call the
12220                                  * actual delegate method.
12221                                  */
12222                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12223
12224                                 CHECK_OPSIZE (6);
12225                                 token = read32 (ip + 2);
12226
12227                                 ins = NULL;
12228
12229                                 cmethod = NULL;
12230                                 CHECK_STACK (1);
12231                                 --sp;
12232                                 addr = *sp;
12233                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12234                                 CHECK_CFG_ERROR;
12235
12236                                 if (cfg->llvm_only)
12237                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12238
12239                                 n = fsig->param_count + fsig->hasthis + 1;
12240
12241                                 CHECK_STACK (n);
12242
12243                                 sp -= n;
12244                                 arg = sp [n - 1];
12245
12246                                 if (cfg->llvm_only) {
12247                                         /*
12248                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12249                                          * cconv. This is set by mono_init_delegate ().
12250                                          */
12251                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12252                                                 MonoInst *callee = addr;
12253                                                 MonoInst *call, *localloc_ins;
12254                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12255                                                 int low_bit_reg = alloc_preg (cfg);
12256
12257                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12258                                                 NEW_BBLOCK (cfg, end_bb);
12259
12260                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12261                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12262                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12263
12264                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12265                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12266                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12267                                                 /*
12268                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12269                                                  */
12270                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12271                                                 ins->dreg = alloc_preg (cfg);
12272                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12273                                                 MONO_ADD_INS (cfg->cbb, ins);
12274                                                 localloc_ins = ins;
12275                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12276                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12277                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12278
12279                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12280                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12281
12282                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12283                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12284                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12285                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12286                                                 ins->dreg = call->dreg;
12287
12288                                                 MONO_START_BB (cfg, end_bb);
12289                                         } else {
12290                                                 /* Caller uses a normal calling conv */
12291
12292                                                 MonoInst *callee = addr;
12293                                                 MonoInst *call, *localloc_ins;
12294                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12295                                                 int low_bit_reg = alloc_preg (cfg);
12296
12297                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12298                                                 NEW_BBLOCK (cfg, end_bb);
12299
12300                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12301                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12302                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12303
12304                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12305                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12306                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12307                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12308                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12309                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12310                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12311                                                 MONO_ADD_INS (cfg->cbb, addr);
12312                                                 /*
12313                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12314                                                  */
12315                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12316                                                 ins->dreg = alloc_preg (cfg);
12317                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12318                                                 MONO_ADD_INS (cfg->cbb, ins);
12319                                                 localloc_ins = ins;
12320                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12321                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12322                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12323
12324                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12325                                                 ins->dreg = call->dreg;
12326                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12327
12328                                                 MONO_START_BB (cfg, end_bb);
12329                                         }
12330                                 } else {
12331                                         /* Same as CEE_CALLI */
12332                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12333                                                 /*
12334                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12335                                                  */
12336                                                 MonoInst *callee = addr;
12337
12338                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12339                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12340                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12341                                         } else {
12342                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12343                                         }
12344                                 }
12345
12346                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12347                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12348
12349                                 CHECK_CFG_EXCEPTION;
12350
12351                                 ip += 6;
12352                                 ins_flag = 0;
12353                                 constrained_class = NULL;
12354                                 break;
12355                         }
12356                         case CEE_MONO_LDDOMAIN:
12357                                 CHECK_STACK_OVF (1);
12358                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12359                                 ip += 2;
12360                                 *sp++ = ins;
12361                                 break;
12362                         case CEE_MONO_GET_LAST_ERROR:
12363                                 CHECK_OPSIZE (2);
12364                                 CHECK_STACK_OVF (1);
12365
12366                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12367                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12368                                 ins->type = STACK_I4;
12369                                 MONO_ADD_INS (cfg->cbb, ins);
12370
12371                                 ip += 2;
12372                                 *sp++ = ins;
12373                                 break;
12374                         case CEE_MONO_GET_RGCTX_ARG:
12375                                 CHECK_OPSIZE (2);
12376                                 CHECK_STACK_OVF (1);
12377
12378                                 mono_create_rgctx_var (cfg);
12379
12380                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12381                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12382                                 ins->sreg1 = cfg->rgctx_var->dreg;
12383                                 ins->type = STACK_PTR;
12384                                 MONO_ADD_INS (cfg->cbb, ins);
12385
12386                                 ip += 2;
12387                                 *sp++ = ins;
12388                                 break;
12389                         default:
12390                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12391                                 break;
12392                         }
12393                         break;
12394                 }
12395
12396                 case CEE_PREFIX1: {
12397                         CHECK_OPSIZE (2);
12398                         switch (ip [1]) {
12399                         case CEE_ARGLIST: {
12400                                 /* somewhat similar to LDTOKEN */
12401                                 MonoInst *addr, *vtvar;
12402                                 CHECK_STACK_OVF (1);
12403                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12404
12405                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12406                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12407
12408                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12409                                 ins->type = STACK_VTYPE;
12410                                 ins->klass = mono_defaults.argumenthandle_class;
12411                                 *sp++ = ins;
12412                                 ip += 2;
12413                                 break;
12414                         }
12415                         case CEE_CEQ:
12416                         case CEE_CGT:
12417                         case CEE_CGT_UN:
12418                         case CEE_CLT:
12419                         case CEE_CLT_UN: {
12420                                 MonoInst *cmp, *arg1, *arg2;
12421
12422                                 CHECK_STACK (2);
12423                                 sp -= 2;
12424                                 arg1 = sp [0];
12425                                 arg2 = sp [1];
12426
12427                                 /*
12428                                  * The following transforms:
12429                                  *    CEE_CEQ    into OP_CEQ
12430                                  *    CEE_CGT    into OP_CGT
12431                                  *    CEE_CGT_UN into OP_CGT_UN
12432                                  *    CEE_CLT    into OP_CLT
12433                                  *    CEE_CLT_UN into OP_CLT_UN
12434                                  */
12435                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12436
12437                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12438                                 cmp->sreg1 = arg1->dreg;
12439                                 cmp->sreg2 = arg2->dreg;
12440                                 type_from_op (cfg, cmp, arg1, arg2);
12441                                 CHECK_TYPE (cmp);
12442                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12443                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12444                                         cmp->opcode = OP_LCOMPARE;
12445                                 else if (arg1->type == STACK_R4)
12446                                         cmp->opcode = OP_RCOMPARE;
12447                                 else if (arg1->type == STACK_R8)
12448                                         cmp->opcode = OP_FCOMPARE;
12449                                 else
12450                                         cmp->opcode = OP_ICOMPARE;
12451                                 MONO_ADD_INS (cfg->cbb, cmp);
12452                                 ins->type = STACK_I4;
12453                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12454                                 type_from_op (cfg, ins, arg1, arg2);
12455
12456                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12457                                         /*
12458                                          * The backends expect the fceq opcodes to do the
12459                                          * comparison too.
12460                                          */
12461                                         ins->sreg1 = cmp->sreg1;
12462                                         ins->sreg2 = cmp->sreg2;
12463                                         NULLIFY_INS (cmp);
12464                                 }
12465                                 MONO_ADD_INS (cfg->cbb, ins);
12466                                 *sp++ = ins;
12467                                 ip += 2;
12468                                 break;
12469                         }
12470                         case CEE_LDFTN: {
12471                                 MonoInst *argconst;
12472                                 MonoMethod *cil_method;
12473
12474                                 CHECK_STACK_OVF (1);
12475                                 CHECK_OPSIZE (6);
12476                                 n = read32 (ip + 2);
12477                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12478                                 CHECK_CFG_ERROR;
12479
12480                                 mono_class_init (cmethod->klass);
12481
12482                                 mono_save_token_info (cfg, image, n, cmethod);
12483
12484                                 context_used = mini_method_check_context_used (cfg, cmethod);
12485
12486                                 cil_method = cmethod;
12487                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12488                                         emit_method_access_failure (cfg, method, cil_method);
12489
12490                                 if (mono_security_core_clr_enabled ())
12491                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12492
12493                                 /*
12494                                  * Optimize the common case of ldftn+delegate creation
12495                                  */
12496                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12497                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12498                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12499                                                 MonoInst *target_ins, *handle_ins;
12500                                                 MonoMethod *invoke;
12501                                                 int invoke_context_used;
12502
12503                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12504                                                 if (!invoke || !mono_method_signature (invoke))
12505                                                         LOAD_ERROR;
12506
12507                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12508
12509                                                 target_ins = sp [-1];
12510
12511                                                 if (mono_security_core_clr_enabled ())
12512                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12513
12514                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12515                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12516                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12517                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12518                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12519                                                         }
12520                                                 }
12521
12522                                                 /* FIXME: SGEN support */
12523                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12524                                                         ip += 6;
12525                                                         if (cfg->verbose_level > 3)
12526                                                                 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));
12527                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12528                                                                 sp --;
12529                                                                 *sp = handle_ins;
12530                                                                 CHECK_CFG_EXCEPTION;
12531                                                                 ip += 5;
12532                                                                 sp ++;
12533                                                                 break;
12534                                                         }
12535                                                         ip -= 6;
12536                                                 }
12537                                         }
12538                                 }
12539
12540                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12541                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12542                                 *sp++ = ins;
12543
12544                                 ip += 6;
12545                                 inline_costs += 10 * num_calls++;
12546                                 break;
12547                         }
12548                         case CEE_LDVIRTFTN: {
12549                                 MonoInst *args [2];
12550
12551                                 CHECK_STACK (1);
12552                                 CHECK_OPSIZE (6);
12553                                 n = read32 (ip + 2);
12554                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12555                                 CHECK_CFG_ERROR;
12556
12557                                 mono_class_init (cmethod->klass);
12558
12559                                 context_used = mini_method_check_context_used (cfg, cmethod);
12560
12561                                 if (mono_security_core_clr_enabled ())
12562                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12563
12564                                 /*
12565                                  * Optimize the common case of ldvirtftn+delegate creation
12566                                  */
12567                                 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)) {
12568                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12569                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12570                                                 MonoInst *target_ins, *handle_ins;
12571                                                 MonoMethod *invoke;
12572                                                 int invoke_context_used;
12573                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12574
12575                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12576                                                 if (!invoke || !mono_method_signature (invoke))
12577                                                         LOAD_ERROR;
12578
12579                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12580
12581                                                 target_ins = sp [-1];
12582
12583                                                 if (mono_security_core_clr_enabled ())
12584                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12585
12586                                                 /* FIXME: SGEN support */
12587                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12588                                                         ip += 6;
12589                                                         if (cfg->verbose_level > 3)
12590                                                                 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));
12591                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12592                                                                 sp -= 2;
12593                                                                 *sp = handle_ins;
12594                                                                 CHECK_CFG_EXCEPTION;
12595                                                                 ip += 5;
12596                                                                 sp ++;
12597                                                                 break;
12598                                                         }
12599                                                         ip -= 6;
12600                                                 }
12601                                         }
12602                                 }
12603
12604                                 --sp;
12605                                 args [0] = *sp;
12606
12607                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12608                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12609
12610                                 if (context_used)
12611                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12612                                 else
12613                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12614
12615                                 ip += 6;
12616                                 inline_costs += 10 * num_calls++;
12617                                 break;
12618                         }
12619                         case CEE_LDARG:
12620                                 CHECK_STACK_OVF (1);
12621                                 CHECK_OPSIZE (4);
12622                                 n = read16 (ip + 2);
12623                                 CHECK_ARG (n);
12624                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12625                                 *sp++ = ins;
12626                                 ip += 4;
12627                                 break;
12628                         case CEE_LDARGA:
12629                                 CHECK_STACK_OVF (1);
12630                                 CHECK_OPSIZE (4);
12631                                 n = read16 (ip + 2);
12632                                 CHECK_ARG (n);
12633                                 NEW_ARGLOADA (cfg, ins, n);
12634                                 MONO_ADD_INS (cfg->cbb, ins);
12635                                 *sp++ = ins;
12636                                 ip += 4;
12637                                 break;
12638                         case CEE_STARG:
12639                                 CHECK_STACK (1);
12640                                 --sp;
12641                                 CHECK_OPSIZE (4);
12642                                 n = read16 (ip + 2);
12643                                 CHECK_ARG (n);
12644                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12645                                         UNVERIFIED;
12646                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12647                                 ip += 4;
12648                                 break;
12649                         case CEE_LDLOC:
12650                                 CHECK_STACK_OVF (1);
12651                                 CHECK_OPSIZE (4);
12652                                 n = read16 (ip + 2);
12653                                 CHECK_LOCAL (n);
12654                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12655                                 *sp++ = ins;
12656                                 ip += 4;
12657                                 break;
12658                         case CEE_LDLOCA: {
12659                                 unsigned char *tmp_ip;
12660                                 CHECK_STACK_OVF (1);
12661                                 CHECK_OPSIZE (4);
12662                                 n = read16 (ip + 2);
12663                                 CHECK_LOCAL (n);
12664
12665                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12666                                         ip = tmp_ip;
12667                                         inline_costs += 1;
12668                                         break;
12669                                 }
12670
12671                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12672                                 *sp++ = ins;
12673                                 ip += 4;
12674                                 break;
12675                         }
12676                         case CEE_STLOC:
12677                                 CHECK_STACK (1);
12678                                 --sp;
12679                                 CHECK_OPSIZE (4);
12680                                 n = read16 (ip + 2);
12681                                 CHECK_LOCAL (n);
12682                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12683                                         UNVERIFIED;
12684                                 emit_stloc_ir (cfg, sp, header, n);
12685                                 ip += 4;
12686                                 inline_costs += 1;
12687                                 break;
12688                         case CEE_LOCALLOC: {
12689                                 CHECK_STACK (1);
12690                                 MonoBasicBlock *non_zero_bb, *end_bb;
12691                                 int alloc_ptr = alloc_preg (cfg);
12692                                 --sp;
12693                                 if (sp != stack_start)
12694                                         UNVERIFIED;
12695                                 if (cfg->method != method)
12696                                         /*
12697                                          * Inlining this into a loop in a parent could lead to
12698                                          * stack overflows which is different behavior than the
12699                                          * non-inlined case, thus disable inlining in this case.
12700                                          */
12701                                         INLINE_FAILURE("localloc");
12702
12703                                 NEW_BBLOCK (cfg, non_zero_bb);
12704                                 NEW_BBLOCK (cfg, end_bb);
12705
12706                                 /* if size != zero */
12707                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12708                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12709
12710                                 //size is zero, so result is NULL
12711                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12712                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12713
12714                                 MONO_START_BB (cfg, non_zero_bb);
12715                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12716                                 ins->dreg = alloc_ptr;
12717                                 ins->sreg1 = sp [0]->dreg;
12718                                 ins->type = STACK_PTR;
12719                                 MONO_ADD_INS (cfg->cbb, ins);
12720
12721                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12722                                 if (init_locals)
12723                                         ins->flags |= MONO_INST_INIT;
12724
12725                                 MONO_START_BB (cfg, end_bb);
12726                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12727                                 ins->type = STACK_PTR;
12728
12729                                 *sp++ = ins;
12730                                 ip += 2;
12731                                 break;
12732                         }
12733                         case CEE_ENDFILTER: {
12734                                 MonoExceptionClause *clause, *nearest;
12735                                 int cc;
12736
12737                                 CHECK_STACK (1);
12738                                 --sp;
12739                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12740                                         UNVERIFIED;
12741                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12742                                 ins->sreg1 = (*sp)->dreg;
12743                                 MONO_ADD_INS (cfg->cbb, ins);
12744                                 start_new_bblock = 1;
12745                                 ip += 2;
12746
12747                                 nearest = NULL;
12748                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12749                                         clause = &header->clauses [cc];
12750                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12751                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12752                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12753                                                 nearest = clause;
12754                                 }
12755                                 g_assert (nearest);
12756                                 if ((ip - header->code) != nearest->handler_offset)
12757                                         UNVERIFIED;
12758
12759                                 break;
12760                         }
12761                         case CEE_UNALIGNED_:
12762                                 ins_flag |= MONO_INST_UNALIGNED;
12763                                 /* FIXME: record alignment? we can assume 1 for now */
12764                                 CHECK_OPSIZE (3);
12765                                 ip += 3;
12766                                 break;
12767                         case CEE_VOLATILE_:
12768                                 ins_flag |= MONO_INST_VOLATILE;
12769                                 ip += 2;
12770                                 break;
12771                         case CEE_TAIL_:
12772                                 ins_flag   |= MONO_INST_TAILCALL;
12773                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12774                                 /* Can't inline tail calls at this time */
12775                                 inline_costs += 100000;
12776                                 ip += 2;
12777                                 break;
12778                         case CEE_INITOBJ:
12779                                 CHECK_STACK (1);
12780                                 --sp;
12781                                 CHECK_OPSIZE (6);
12782                                 token = read32 (ip + 2);
12783                                 klass = mini_get_class (method, token, generic_context);
12784                                 CHECK_TYPELOAD (klass);
12785                                 if (generic_class_is_reference_type (cfg, klass))
12786                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12787                                 else
12788                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12789                                 ip += 6;
12790                                 inline_costs += 1;
12791                                 break;
12792                         case CEE_CONSTRAINED_:
12793                                 CHECK_OPSIZE (6);
12794                                 token = read32 (ip + 2);
12795                                 constrained_class = mini_get_class (method, token, generic_context);
12796                                 CHECK_TYPELOAD (constrained_class);
12797                                 ip += 6;
12798                                 break;
12799                         case CEE_CPBLK:
12800                         case CEE_INITBLK: {
12801                                 MonoInst *iargs [3];
12802                                 CHECK_STACK (3);
12803                                 sp -= 3;
12804
12805                                 /* Skip optimized paths for volatile operations. */
12806                                 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)) {
12807                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
12808                                 } 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)) {
12809                                         /* emit_memset only works when val == 0 */
12810                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
12811                                 } else {
12812                                         MonoInst *call;
12813                                         iargs [0] = sp [0];
12814                                         iargs [1] = sp [1];
12815                                         iargs [2] = sp [2];
12816                                         if (ip [1] == CEE_CPBLK) {
12817                                                 /*
12818                                                  * FIXME: It's unclear whether we should be emitting both the acquire
12819                                                  * and release barriers for cpblk. It is technically both a load and
12820                                                  * store operation, so it seems like that's the sensible thing to do.
12821                                                  *
12822                                                  * FIXME: We emit full barriers on both sides of the operation for
12823                                                  * simplicity. We should have a separate atomic memcpy method instead.
12824                                                  */
12825                                                 MonoMethod *memcpy_method = get_memcpy_method ();
12826
12827                                                 if (ins_flag & MONO_INST_VOLATILE)
12828                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12829
12830                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
12831                                                 call->flags |= ins_flag;
12832
12833                                                 if (ins_flag & MONO_INST_VOLATILE)
12834                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12835                                         } else {
12836                                                 MonoMethod *memset_method = get_memset_method ();
12837                                                 if (ins_flag & MONO_INST_VOLATILE) {
12838                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
12839                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
12840                                                 }
12841                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
12842                                                 call->flags |= ins_flag;
12843                                         }
12844                                 }
12845                                 ip += 2;
12846                                 ins_flag = 0;
12847                                 inline_costs += 1;
12848                                 break;
12849                         }
12850                         case CEE_NO_:
12851                                 CHECK_OPSIZE (3);
12852                                 if (ip [2] & 0x1)
12853                                         ins_flag |= MONO_INST_NOTYPECHECK;
12854                                 if (ip [2] & 0x2)
12855                                         ins_flag |= MONO_INST_NORANGECHECK;
12856                                 /* we ignore the no-nullcheck for now since we
12857                                  * really do it explicitly only when doing callvirt->call
12858                                  */
12859                                 ip += 3;
12860                                 break;
12861                         case CEE_RETHROW: {
12862                                 MonoInst *load;
12863                                 int handler_offset = -1;
12864
12865                                 for (i = 0; i < header->num_clauses; ++i) {
12866                                         MonoExceptionClause *clause = &header->clauses [i];
12867                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12868                                                 handler_offset = clause->handler_offset;
12869                                                 break;
12870                                         }
12871                                 }
12872
12873                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12874
12875                                 if (handler_offset == -1)
12876                                         UNVERIFIED;
12877
12878                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12879                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12880                                 ins->sreg1 = load->dreg;
12881                                 MONO_ADD_INS (cfg->cbb, ins);
12882
12883                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12884                                 MONO_ADD_INS (cfg->cbb, ins);
12885
12886                                 sp = stack_start;
12887                                 link_bblock (cfg, cfg->cbb, end_bblock);
12888                                 start_new_bblock = 1;
12889                                 ip += 2;
12890                                 break;
12891                         }
12892                         case CEE_SIZEOF: {
12893                                 guint32 val;
12894                                 int ialign;
12895
12896                                 CHECK_STACK_OVF (1);
12897                                 CHECK_OPSIZE (6);
12898                                 token = read32 (ip + 2);
12899                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12900                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12901                                         CHECK_CFG_ERROR;
12902
12903                                         val = mono_type_size (type, &ialign);
12904                                 } else {
12905                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12906                                         CHECK_TYPELOAD (klass);
12907
12908                                         val = mono_type_size (&klass->byval_arg, &ialign);
12909
12910                                         if (mini_is_gsharedvt_klass (klass))
12911                                                 GSHAREDVT_FAILURE (*ip);
12912                                 }
12913                                 EMIT_NEW_ICONST (cfg, ins, val);
12914                                 *sp++= ins;
12915                                 ip += 6;
12916                                 break;
12917                         }
12918                         case CEE_REFANYTYPE: {
12919                                 MonoInst *src_var, *src;
12920
12921                                 GSHAREDVT_FAILURE (*ip);
12922
12923                                 CHECK_STACK (1);
12924                                 --sp;
12925
12926                                 // FIXME:
12927                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12928                                 if (!src_var)
12929                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12930                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12931                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12932                                 *sp++ = ins;
12933                                 ip += 2;
12934                                 break;
12935                         }
12936                         case CEE_READONLY_:
12937                                 readonly = TRUE;
12938                                 ip += 2;
12939                                 break;
12940
12941                         case CEE_UNUSED56:
12942                         case CEE_UNUSED57:
12943                         case CEE_UNUSED70:
12944                         case CEE_UNUSED:
12945                         case CEE_UNUSED99:
12946                                 UNVERIFIED;
12947
12948                         default:
12949                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12950                                 UNVERIFIED;
12951                         }
12952                         break;
12953                 }
12954                 case CEE_UNUSED58:
12955                 case CEE_UNUSED1:
12956                         UNVERIFIED;
12957
12958                 default:
12959                         g_warning ("opcode 0x%02x not handled", *ip);
12960                         UNVERIFIED;
12961                 }
12962         }
12963         if (start_new_bblock != 1)
12964                 UNVERIFIED;
12965
12966         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12967         if (cfg->cbb->next_bb) {
12968                 /* This could already be set because of inlining, #693905 */
12969                 MonoBasicBlock *bb = cfg->cbb;
12970
12971                 while (bb->next_bb)
12972                         bb = bb->next_bb;
12973                 bb->next_bb = end_bblock;
12974         } else {
12975                 cfg->cbb->next_bb = end_bblock;
12976         }
12977
12978         if (cfg->method == method && cfg->domainvar) {
12979                 MonoInst *store;
12980                 MonoInst *get_domain;
12981
12982                 cfg->cbb = init_localsbb;
12983
12984                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12985                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12986                 MONO_ADD_INS (cfg->cbb, store);
12987         }
12988
12989 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12990         if (cfg->compile_aot)
12991                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12992                 mono_get_got_var (cfg);
12993 #endif
12994
12995         if (cfg->method == method && cfg->got_var)
12996                 mono_emit_load_got_addr (cfg);
12997
12998         if (init_localsbb) {
12999                 cfg->cbb = init_localsbb;
13000                 cfg->ip = NULL;
13001                 for (i = 0; i < header->num_locals; ++i) {
13002                         emit_init_local (cfg, i, header->locals [i], init_locals);
13003                 }
13004         }
13005
13006         if (cfg->init_ref_vars && cfg->method == method) {
13007                 /* Emit initialization for ref vars */
13008                 // FIXME: Avoid duplication initialization for IL locals.
13009                 for (i = 0; i < cfg->num_varinfo; ++i) {
13010                         MonoInst *ins = cfg->varinfo [i];
13011
13012                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13013                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13014                 }
13015         }
13016
13017         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13018                 cfg->cbb = init_localsbb;
13019                 emit_push_lmf (cfg);
13020         }
13021
13022         cfg->cbb = init_localsbb;
13023         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13024
13025         if (seq_points) {
13026                 MonoBasicBlock *bb;
13027
13028                 /*
13029                  * Make seq points at backward branch targets interruptable.
13030                  */
13031                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13032                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13033                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13034         }
13035
13036         /* Add a sequence point for method entry/exit events */
13037         if (seq_points && cfg->gen_sdb_seq_points) {
13038                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13039                 MONO_ADD_INS (init_localsbb, ins);
13040                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13041                 MONO_ADD_INS (cfg->bb_exit, ins);
13042         }
13043
13044         /*
13045          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13046          * the code they refer to was dead (#11880).
13047          */
13048         if (sym_seq_points) {
13049                 for (i = 0; i < header->code_size; ++i) {
13050                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13051                                 MonoInst *ins;
13052
13053                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13054                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13055                         }
13056                 }
13057         }
13058
13059         cfg->ip = NULL;
13060
13061         if (cfg->method == method) {
13062                 MonoBasicBlock *bb;
13063                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13064                         if (bb == cfg->bb_init)
13065                                 bb->region = -1;
13066                         else
13067                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
13068                         if (cfg->spvars)
13069                                 mono_create_spvar_for_region (cfg, bb->region);
13070                         if (cfg->verbose_level > 2)
13071                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13072                 }
13073         } else {
13074                 MonoBasicBlock *bb;
13075                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13076                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13077                         bb->real_offset = inline_offset;
13078                 }
13079         }
13080
13081         if (inline_costs < 0) {
13082                 char *mname;
13083
13084                 /* Method is too large */
13085                 mname = mono_method_full_name (method, TRUE);
13086                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13087                 g_free (mname);
13088         }
13089
13090         if ((cfg->verbose_level > 2) && (cfg->method == method))
13091                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13092
13093         goto cleanup;
13094
13095 mono_error_exit:
13096         g_assert (!mono_error_ok (&cfg->error));
13097         goto cleanup;
13098
13099  exception_exit:
13100         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13101         goto cleanup;
13102
13103  unverified:
13104         set_exception_type_from_invalid_il (cfg, method, ip);
13105         goto cleanup;
13106
13107  cleanup:
13108         g_slist_free (class_inits);
13109         mono_basic_block_free (original_bb);
13110         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13111         if (cfg->exception_type)
13112                 return -1;
13113         else
13114                 return inline_costs;
13115 }
13116
13117 static int
13118 store_membase_reg_to_store_membase_imm (int opcode)
13119 {
13120         switch (opcode) {
13121         case OP_STORE_MEMBASE_REG:
13122                 return OP_STORE_MEMBASE_IMM;
13123         case OP_STOREI1_MEMBASE_REG:
13124                 return OP_STOREI1_MEMBASE_IMM;
13125         case OP_STOREI2_MEMBASE_REG:
13126                 return OP_STOREI2_MEMBASE_IMM;
13127         case OP_STOREI4_MEMBASE_REG:
13128                 return OP_STOREI4_MEMBASE_IMM;
13129         case OP_STOREI8_MEMBASE_REG:
13130                 return OP_STOREI8_MEMBASE_IMM;
13131         default:
13132                 g_assert_not_reached ();
13133         }
13134
13135         return -1;
13136 }
13137
13138 int
13139 mono_op_to_op_imm (int opcode)
13140 {
13141         switch (opcode) {
13142         case OP_IADD:
13143                 return OP_IADD_IMM;
13144         case OP_ISUB:
13145                 return OP_ISUB_IMM;
13146         case OP_IDIV:
13147                 return OP_IDIV_IMM;
13148         case OP_IDIV_UN:
13149                 return OP_IDIV_UN_IMM;
13150         case OP_IREM:
13151                 return OP_IREM_IMM;
13152         case OP_IREM_UN:
13153                 return OP_IREM_UN_IMM;
13154         case OP_IMUL:
13155                 return OP_IMUL_IMM;
13156         case OP_IAND:
13157                 return OP_IAND_IMM;
13158         case OP_IOR:
13159                 return OP_IOR_IMM;
13160         case OP_IXOR:
13161                 return OP_IXOR_IMM;
13162         case OP_ISHL:
13163                 return OP_ISHL_IMM;
13164         case OP_ISHR:
13165                 return OP_ISHR_IMM;
13166         case OP_ISHR_UN:
13167                 return OP_ISHR_UN_IMM;
13168
13169         case OP_LADD:
13170                 return OP_LADD_IMM;
13171         case OP_LSUB:
13172                 return OP_LSUB_IMM;
13173         case OP_LAND:
13174                 return OP_LAND_IMM;
13175         case OP_LOR:
13176                 return OP_LOR_IMM;
13177         case OP_LXOR:
13178                 return OP_LXOR_IMM;
13179         case OP_LSHL:
13180                 return OP_LSHL_IMM;
13181         case OP_LSHR:
13182                 return OP_LSHR_IMM;
13183         case OP_LSHR_UN:
13184                 return OP_LSHR_UN_IMM;
13185 #if SIZEOF_REGISTER == 8
13186         case OP_LREM:
13187                 return OP_LREM_IMM;
13188 #endif
13189
13190         case OP_COMPARE:
13191                 return OP_COMPARE_IMM;
13192         case OP_ICOMPARE:
13193                 return OP_ICOMPARE_IMM;
13194         case OP_LCOMPARE:
13195                 return OP_LCOMPARE_IMM;
13196
13197         case OP_STORE_MEMBASE_REG:
13198                 return OP_STORE_MEMBASE_IMM;
13199         case OP_STOREI1_MEMBASE_REG:
13200                 return OP_STOREI1_MEMBASE_IMM;
13201         case OP_STOREI2_MEMBASE_REG:
13202                 return OP_STOREI2_MEMBASE_IMM;
13203         case OP_STOREI4_MEMBASE_REG:
13204                 return OP_STOREI4_MEMBASE_IMM;
13205
13206 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13207         case OP_X86_PUSH:
13208                 return OP_X86_PUSH_IMM;
13209         case OP_X86_COMPARE_MEMBASE_REG:
13210                 return OP_X86_COMPARE_MEMBASE_IMM;
13211 #endif
13212 #if defined(TARGET_AMD64)
13213         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13214                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13215 #endif
13216         case OP_VOIDCALL_REG:
13217                 return OP_VOIDCALL;
13218         case OP_CALL_REG:
13219                 return OP_CALL;
13220         case OP_LCALL_REG:
13221                 return OP_LCALL;
13222         case OP_FCALL_REG:
13223                 return OP_FCALL;
13224         case OP_LOCALLOC:
13225                 return OP_LOCALLOC_IMM;
13226         }
13227
13228         return -1;
13229 }
13230
13231 static int
13232 ldind_to_load_membase (int opcode)
13233 {
13234         switch (opcode) {
13235         case CEE_LDIND_I1:
13236                 return OP_LOADI1_MEMBASE;
13237         case CEE_LDIND_U1:
13238                 return OP_LOADU1_MEMBASE;
13239         case CEE_LDIND_I2:
13240                 return OP_LOADI2_MEMBASE;
13241         case CEE_LDIND_U2:
13242                 return OP_LOADU2_MEMBASE;
13243         case CEE_LDIND_I4:
13244                 return OP_LOADI4_MEMBASE;
13245         case CEE_LDIND_U4:
13246                 return OP_LOADU4_MEMBASE;
13247         case CEE_LDIND_I:
13248                 return OP_LOAD_MEMBASE;
13249         case CEE_LDIND_REF:
13250                 return OP_LOAD_MEMBASE;
13251         case CEE_LDIND_I8:
13252                 return OP_LOADI8_MEMBASE;
13253         case CEE_LDIND_R4:
13254                 return OP_LOADR4_MEMBASE;
13255         case CEE_LDIND_R8:
13256                 return OP_LOADR8_MEMBASE;
13257         default:
13258                 g_assert_not_reached ();
13259         }
13260
13261         return -1;
13262 }
13263
13264 static int
13265 stind_to_store_membase (int opcode)
13266 {
13267         switch (opcode) {
13268         case CEE_STIND_I1:
13269                 return OP_STOREI1_MEMBASE_REG;
13270         case CEE_STIND_I2:
13271                 return OP_STOREI2_MEMBASE_REG;
13272         case CEE_STIND_I4:
13273                 return OP_STOREI4_MEMBASE_REG;
13274         case CEE_STIND_I:
13275         case CEE_STIND_REF:
13276                 return OP_STORE_MEMBASE_REG;
13277         case CEE_STIND_I8:
13278                 return OP_STOREI8_MEMBASE_REG;
13279         case CEE_STIND_R4:
13280                 return OP_STORER4_MEMBASE_REG;
13281         case CEE_STIND_R8:
13282                 return OP_STORER8_MEMBASE_REG;
13283         default:
13284                 g_assert_not_reached ();
13285         }
13286
13287         return -1;
13288 }
13289
13290 int
13291 mono_load_membase_to_load_mem (int opcode)
13292 {
13293         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13294 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13295         switch (opcode) {
13296         case OP_LOAD_MEMBASE:
13297                 return OP_LOAD_MEM;
13298         case OP_LOADU1_MEMBASE:
13299                 return OP_LOADU1_MEM;
13300         case OP_LOADU2_MEMBASE:
13301                 return OP_LOADU2_MEM;
13302         case OP_LOADI4_MEMBASE:
13303                 return OP_LOADI4_MEM;
13304         case OP_LOADU4_MEMBASE:
13305                 return OP_LOADU4_MEM;
13306 #if SIZEOF_REGISTER == 8
13307         case OP_LOADI8_MEMBASE:
13308                 return OP_LOADI8_MEM;
13309 #endif
13310         }
13311 #endif
13312
13313         return -1;
13314 }
13315
13316 static inline int
13317 op_to_op_dest_membase (int store_opcode, int opcode)
13318 {
13319 #if defined(TARGET_X86)
13320         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13321                 return -1;
13322
13323         switch (opcode) {
13324         case OP_IADD:
13325                 return OP_X86_ADD_MEMBASE_REG;
13326         case OP_ISUB:
13327                 return OP_X86_SUB_MEMBASE_REG;
13328         case OP_IAND:
13329                 return OP_X86_AND_MEMBASE_REG;
13330         case OP_IOR:
13331                 return OP_X86_OR_MEMBASE_REG;
13332         case OP_IXOR:
13333                 return OP_X86_XOR_MEMBASE_REG;
13334         case OP_ADD_IMM:
13335         case OP_IADD_IMM:
13336                 return OP_X86_ADD_MEMBASE_IMM;
13337         case OP_SUB_IMM:
13338         case OP_ISUB_IMM:
13339                 return OP_X86_SUB_MEMBASE_IMM;
13340         case OP_AND_IMM:
13341         case OP_IAND_IMM:
13342                 return OP_X86_AND_MEMBASE_IMM;
13343         case OP_OR_IMM:
13344         case OP_IOR_IMM:
13345                 return OP_X86_OR_MEMBASE_IMM;
13346         case OP_XOR_IMM:
13347         case OP_IXOR_IMM:
13348                 return OP_X86_XOR_MEMBASE_IMM;
13349         case OP_MOVE:
13350                 return OP_NOP;
13351         }
13352 #endif
13353
13354 #if defined(TARGET_AMD64)
13355         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13356                 return -1;
13357
13358         switch (opcode) {
13359         case OP_IADD:
13360                 return OP_X86_ADD_MEMBASE_REG;
13361         case OP_ISUB:
13362                 return OP_X86_SUB_MEMBASE_REG;
13363         case OP_IAND:
13364                 return OP_X86_AND_MEMBASE_REG;
13365         case OP_IOR:
13366                 return OP_X86_OR_MEMBASE_REG;
13367         case OP_IXOR:
13368                 return OP_X86_XOR_MEMBASE_REG;
13369         case OP_IADD_IMM:
13370                 return OP_X86_ADD_MEMBASE_IMM;
13371         case OP_ISUB_IMM:
13372                 return OP_X86_SUB_MEMBASE_IMM;
13373         case OP_IAND_IMM:
13374                 return OP_X86_AND_MEMBASE_IMM;
13375         case OP_IOR_IMM:
13376                 return OP_X86_OR_MEMBASE_IMM;
13377         case OP_IXOR_IMM:
13378                 return OP_X86_XOR_MEMBASE_IMM;
13379         case OP_LADD:
13380                 return OP_AMD64_ADD_MEMBASE_REG;
13381         case OP_LSUB:
13382                 return OP_AMD64_SUB_MEMBASE_REG;
13383         case OP_LAND:
13384                 return OP_AMD64_AND_MEMBASE_REG;
13385         case OP_LOR:
13386                 return OP_AMD64_OR_MEMBASE_REG;
13387         case OP_LXOR:
13388                 return OP_AMD64_XOR_MEMBASE_REG;
13389         case OP_ADD_IMM:
13390         case OP_LADD_IMM:
13391                 return OP_AMD64_ADD_MEMBASE_IMM;
13392         case OP_SUB_IMM:
13393         case OP_LSUB_IMM:
13394                 return OP_AMD64_SUB_MEMBASE_IMM;
13395         case OP_AND_IMM:
13396         case OP_LAND_IMM:
13397                 return OP_AMD64_AND_MEMBASE_IMM;
13398         case OP_OR_IMM:
13399         case OP_LOR_IMM:
13400                 return OP_AMD64_OR_MEMBASE_IMM;
13401         case OP_XOR_IMM:
13402         case OP_LXOR_IMM:
13403                 return OP_AMD64_XOR_MEMBASE_IMM;
13404         case OP_MOVE:
13405                 return OP_NOP;
13406         }
13407 #endif
13408
13409         return -1;
13410 }
13411
13412 static inline int
13413 op_to_op_store_membase (int store_opcode, int opcode)
13414 {
13415 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13416         switch (opcode) {
13417         case OP_ICEQ:
13418                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13419                         return OP_X86_SETEQ_MEMBASE;
13420         case OP_CNE:
13421                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13422                         return OP_X86_SETNE_MEMBASE;
13423         }
13424 #endif
13425
13426         return -1;
13427 }
13428
13429 static inline int
13430 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13431 {
13432 #ifdef TARGET_X86
13433         /* FIXME: This has sign extension issues */
13434         /*
13435         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13436                 return OP_X86_COMPARE_MEMBASE8_IMM;
13437         */
13438
13439         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13440                 return -1;
13441
13442         switch (opcode) {
13443         case OP_X86_PUSH:
13444                 return OP_X86_PUSH_MEMBASE;
13445         case OP_COMPARE_IMM:
13446         case OP_ICOMPARE_IMM:
13447                 return OP_X86_COMPARE_MEMBASE_IMM;
13448         case OP_COMPARE:
13449         case OP_ICOMPARE:
13450                 return OP_X86_COMPARE_MEMBASE_REG;
13451         }
13452 #endif
13453
13454 #ifdef TARGET_AMD64
13455         /* FIXME: This has sign extension issues */
13456         /*
13457         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13458                 return OP_X86_COMPARE_MEMBASE8_IMM;
13459         */
13460
13461         switch (opcode) {
13462         case OP_X86_PUSH:
13463                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13464                         return OP_X86_PUSH_MEMBASE;
13465                 break;
13466                 /* FIXME: This only works for 32 bit immediates
13467         case OP_COMPARE_IMM:
13468         case OP_LCOMPARE_IMM:
13469                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13470                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13471                 */
13472         case OP_ICOMPARE_IMM:
13473                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13474                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13475                 break;
13476         case OP_COMPARE:
13477         case OP_LCOMPARE:
13478                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13479                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13480                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13481                         return OP_AMD64_COMPARE_MEMBASE_REG;
13482                 break;
13483         case OP_ICOMPARE:
13484                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13485                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13486                 break;
13487         }
13488 #endif
13489
13490         return -1;
13491 }
13492
13493 static inline int
13494 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13495 {
13496 #ifdef TARGET_X86
13497         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13498                 return -1;
13499
13500         switch (opcode) {
13501         case OP_COMPARE:
13502         case OP_ICOMPARE:
13503                 return OP_X86_COMPARE_REG_MEMBASE;
13504         case OP_IADD:
13505                 return OP_X86_ADD_REG_MEMBASE;
13506         case OP_ISUB:
13507                 return OP_X86_SUB_REG_MEMBASE;
13508         case OP_IAND:
13509                 return OP_X86_AND_REG_MEMBASE;
13510         case OP_IOR:
13511                 return OP_X86_OR_REG_MEMBASE;
13512         case OP_IXOR:
13513                 return OP_X86_XOR_REG_MEMBASE;
13514         }
13515 #endif
13516
13517 #ifdef TARGET_AMD64
13518         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13519                 switch (opcode) {
13520                 case OP_ICOMPARE:
13521                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13522                 case OP_IADD:
13523                         return OP_X86_ADD_REG_MEMBASE;
13524                 case OP_ISUB:
13525                         return OP_X86_SUB_REG_MEMBASE;
13526                 case OP_IAND:
13527                         return OP_X86_AND_REG_MEMBASE;
13528                 case OP_IOR:
13529                         return OP_X86_OR_REG_MEMBASE;
13530                 case OP_IXOR:
13531                         return OP_X86_XOR_REG_MEMBASE;
13532                 }
13533         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13534                 switch (opcode) {
13535                 case OP_COMPARE:
13536                 case OP_LCOMPARE:
13537                         return OP_AMD64_COMPARE_REG_MEMBASE;
13538                 case OP_LADD:
13539                         return OP_AMD64_ADD_REG_MEMBASE;
13540                 case OP_LSUB:
13541                         return OP_AMD64_SUB_REG_MEMBASE;
13542                 case OP_LAND:
13543                         return OP_AMD64_AND_REG_MEMBASE;
13544                 case OP_LOR:
13545                         return OP_AMD64_OR_REG_MEMBASE;
13546                 case OP_LXOR:
13547                         return OP_AMD64_XOR_REG_MEMBASE;
13548                 }
13549         }
13550 #endif
13551
13552         return -1;
13553 }
13554
13555 int
13556 mono_op_to_op_imm_noemul (int opcode)
13557 {
13558         switch (opcode) {
13559 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13560         case OP_LSHR:
13561         case OP_LSHL:
13562         case OP_LSHR_UN:
13563                 return -1;
13564 #endif
13565 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13566         case OP_IDIV:
13567         case OP_IDIV_UN:
13568         case OP_IREM:
13569         case OP_IREM_UN:
13570                 return -1;
13571 #endif
13572 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13573         case OP_IMUL:
13574                 return -1;
13575 #endif
13576         default:
13577                 return mono_op_to_op_imm (opcode);
13578         }
13579 }
13580
13581 /**
13582  * mono_handle_global_vregs:
13583  *
13584  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13585  * for them.
13586  */
13587 void
13588 mono_handle_global_vregs (MonoCompile *cfg)
13589 {
13590         gint32 *vreg_to_bb;
13591         MonoBasicBlock *bb;
13592         int i, pos;
13593
13594         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13595
13596 #ifdef MONO_ARCH_SIMD_INTRINSICS
13597         if (cfg->uses_simd_intrinsics)
13598                 mono_simd_simplify_indirection (cfg);
13599 #endif
13600
13601         /* Find local vregs used in more than one bb */
13602         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13603                 MonoInst *ins = bb->code;
13604                 int block_num = bb->block_num;
13605
13606                 if (cfg->verbose_level > 2)
13607                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13608
13609                 cfg->cbb = bb;
13610                 for (; ins; ins = ins->next) {
13611                         const char *spec = INS_INFO (ins->opcode);
13612                         int regtype = 0, regindex;
13613                         gint32 prev_bb;
13614
13615                         if (G_UNLIKELY (cfg->verbose_level > 2))
13616                                 mono_print_ins (ins);
13617
13618                         g_assert (ins->opcode >= MONO_CEE_LAST);
13619
13620                         for (regindex = 0; regindex < 4; regindex ++) {
13621                                 int vreg = 0;
13622
13623                                 if (regindex == 0) {
13624                                         regtype = spec [MONO_INST_DEST];
13625                                         if (regtype == ' ')
13626                                                 continue;
13627                                         vreg = ins->dreg;
13628                                 } else if (regindex == 1) {
13629                                         regtype = spec [MONO_INST_SRC1];
13630                                         if (regtype == ' ')
13631                                                 continue;
13632                                         vreg = ins->sreg1;
13633                                 } else if (regindex == 2) {
13634                                         regtype = spec [MONO_INST_SRC2];
13635                                         if (regtype == ' ')
13636                                                 continue;
13637                                         vreg = ins->sreg2;
13638                                 } else if (regindex == 3) {
13639                                         regtype = spec [MONO_INST_SRC3];
13640                                         if (regtype == ' ')
13641                                                 continue;
13642                                         vreg = ins->sreg3;
13643                                 }
13644
13645 #if SIZEOF_REGISTER == 4
13646                                 /* In the LLVM case, the long opcodes are not decomposed */
13647                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13648                                         /*
13649                                          * Since some instructions reference the original long vreg,
13650                                          * and some reference the two component vregs, it is quite hard
13651                                          * to determine when it needs to be global. So be conservative.
13652                                          */
13653                                         if (!get_vreg_to_inst (cfg, vreg)) {
13654                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13655
13656                                                 if (cfg->verbose_level > 2)
13657                                                         printf ("LONG VREG R%d made global.\n", vreg);
13658                                         }
13659
13660                                         /*
13661                                          * Make the component vregs volatile since the optimizations can
13662                                          * get confused otherwise.
13663                                          */
13664                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13665                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13666                                 }
13667 #endif
13668
13669                                 g_assert (vreg != -1);
13670
13671                                 prev_bb = vreg_to_bb [vreg];
13672                                 if (prev_bb == 0) {
13673                                         /* 0 is a valid block num */
13674                                         vreg_to_bb [vreg] = block_num + 1;
13675                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13676                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13677                                                 continue;
13678
13679                                         if (!get_vreg_to_inst (cfg, vreg)) {
13680                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13681                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13682
13683                                                 switch (regtype) {
13684                                                 case 'i':
13685                                                         if (vreg_is_ref (cfg, vreg))
13686                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13687                                                         else
13688                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13689                                                         break;
13690                                                 case 'l':
13691                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13692                                                         break;
13693                                                 case 'f':
13694                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13695                                                         break;
13696                                                 case 'v':
13697                                                 case 'x':
13698                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13699                                                         break;
13700                                                 default:
13701                                                         g_assert_not_reached ();
13702                                                 }
13703                                         }
13704
13705                                         /* Flag as having been used in more than one bb */
13706                                         vreg_to_bb [vreg] = -1;
13707                                 }
13708                         }
13709                 }
13710         }
13711
13712         /* If a variable is used in only one bblock, convert it into a local vreg */
13713         for (i = 0; i < cfg->num_varinfo; i++) {
13714                 MonoInst *var = cfg->varinfo [i];
13715                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13716
13717                 switch (var->type) {
13718                 case STACK_I4:
13719                 case STACK_OBJ:
13720                 case STACK_PTR:
13721                 case STACK_MP:
13722                 case STACK_VTYPE:
13723 #if SIZEOF_REGISTER == 8
13724                 case STACK_I8:
13725 #endif
13726 #if !defined(TARGET_X86)
13727                 /* Enabling this screws up the fp stack on x86 */
13728                 case STACK_R8:
13729 #endif
13730                         if (mono_arch_is_soft_float ())
13731                                 break;
13732
13733                         /*
13734                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13735                                 break;
13736                         */
13737
13738                         /* Arguments are implicitly global */
13739                         /* Putting R4 vars into registers doesn't work currently */
13740                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13741                         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) {
13742                                 /*
13743                                  * Make that the variable's liveness interval doesn't contain a call, since
13744                                  * that would cause the lvreg to be spilled, making the whole optimization
13745                                  * useless.
13746                                  */
13747                                 /* This is too slow for JIT compilation */
13748 #if 0
13749                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13750                                         MonoInst *ins;
13751                                         int def_index, call_index, ins_index;
13752                                         gboolean spilled = FALSE;
13753
13754                                         def_index = -1;
13755                                         call_index = -1;
13756                                         ins_index = 0;
13757                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13758                                                 const char *spec = INS_INFO (ins->opcode);
13759
13760                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13761                                                         def_index = ins_index;
13762
13763                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13764                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13765                                                         if (call_index > def_index) {
13766                                                                 spilled = TRUE;
13767                                                                 break;
13768                                                         }
13769                                                 }
13770
13771                                                 if (MONO_IS_CALL (ins))
13772                                                         call_index = ins_index;
13773
13774                                                 ins_index ++;
13775                                         }
13776
13777                                         if (spilled)
13778                                                 break;
13779                                 }
13780 #endif
13781
13782                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13783                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13784                                 var->flags |= MONO_INST_IS_DEAD;
13785                                 cfg->vreg_to_inst [var->dreg] = NULL;
13786                         }
13787                         break;
13788                 }
13789         }
13790
13791         /*
13792          * Compress the varinfo and vars tables so the liveness computation is faster and
13793          * takes up less space.
13794          */
13795         pos = 0;
13796         for (i = 0; i < cfg->num_varinfo; ++i) {
13797                 MonoInst *var = cfg->varinfo [i];
13798                 if (pos < i && cfg->locals_start == i)
13799                         cfg->locals_start = pos;
13800                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13801                         if (pos < i) {
13802                                 cfg->varinfo [pos] = cfg->varinfo [i];
13803                                 cfg->varinfo [pos]->inst_c0 = pos;
13804                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13805                                 cfg->vars [pos].idx = pos;
13806 #if SIZEOF_REGISTER == 4
13807                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13808                                         /* Modify the two component vars too */
13809                                         MonoInst *var1;
13810
13811                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13812                                         var1->inst_c0 = pos;
13813                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13814                                         var1->inst_c0 = pos;
13815                                 }
13816 #endif
13817                         }
13818                         pos ++;
13819                 }
13820         }
13821         cfg->num_varinfo = pos;
13822         if (cfg->locals_start > cfg->num_varinfo)
13823                 cfg->locals_start = cfg->num_varinfo;
13824 }
13825
13826 /*
13827  * mono_allocate_gsharedvt_vars:
13828  *
13829  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13830  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13831  */
13832 void
13833 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13834 {
13835         int i;
13836
13837         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13838
13839         for (i = 0; i < cfg->num_varinfo; ++i) {
13840                 MonoInst *ins = cfg->varinfo [i];
13841                 int idx;
13842
13843                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13844                         if (i >= cfg->locals_start) {
13845                                 /* Local */
13846                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13847                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13848                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13849                                 ins->inst_imm = idx;
13850                         } else {
13851                                 /* Arg */
13852                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13853                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13854                         }
13855                 }
13856         }
13857 }
13858
13859 /**
13860  * mono_spill_global_vars:
13861  *
13862  *   Generate spill code for variables which are not allocated to registers,
13863  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13864  * code is generated which could be optimized by the local optimization passes.
13865  */
13866 void
13867 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13868 {
13869         MonoBasicBlock *bb;
13870         char spec2 [16];
13871         int orig_next_vreg;
13872         guint32 *vreg_to_lvreg;
13873         guint32 *lvregs;
13874         guint32 i, lvregs_len, lvregs_size;
13875         gboolean dest_has_lvreg = FALSE;
13876         MonoStackType stacktypes [128];
13877         MonoInst **live_range_start, **live_range_end;
13878         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13879
13880         *need_local_opts = FALSE;
13881
13882         memset (spec2, 0, sizeof (spec2));
13883
13884         /* FIXME: Move this function to mini.c */
13885         stacktypes ['i'] = STACK_PTR;
13886         stacktypes ['l'] = STACK_I8;
13887         stacktypes ['f'] = STACK_R8;
13888 #ifdef MONO_ARCH_SIMD_INTRINSICS
13889         stacktypes ['x'] = STACK_VTYPE;
13890 #endif
13891
13892 #if SIZEOF_REGISTER == 4
13893         /* Create MonoInsts for longs */
13894         for (i = 0; i < cfg->num_varinfo; i++) {
13895                 MonoInst *ins = cfg->varinfo [i];
13896
13897                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13898                         switch (ins->type) {
13899                         case STACK_R8:
13900                         case STACK_I8: {
13901                                 MonoInst *tree;
13902
13903                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13904                                         break;
13905
13906                                 g_assert (ins->opcode == OP_REGOFFSET);
13907
13908                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13909                                 g_assert (tree);
13910                                 tree->opcode = OP_REGOFFSET;
13911                                 tree->inst_basereg = ins->inst_basereg;
13912                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13913
13914                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13915                                 g_assert (tree);
13916                                 tree->opcode = OP_REGOFFSET;
13917                                 tree->inst_basereg = ins->inst_basereg;
13918                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13919                                 break;
13920                         }
13921                         default:
13922                                 break;
13923                         }
13924                 }
13925         }
13926 #endif
13927
13928         if (cfg->compute_gc_maps) {
13929                 /* registers need liveness info even for !non refs */
13930                 for (i = 0; i < cfg->num_varinfo; i++) {
13931                         MonoInst *ins = cfg->varinfo [i];
13932
13933                         if (ins->opcode == OP_REGVAR)
13934                                 ins->flags |= MONO_INST_GC_TRACK;
13935                 }
13936         }
13937
13938         /* FIXME: widening and truncation */
13939
13940         /*
13941          * As an optimization, when a variable allocated to the stack is first loaded into
13942          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13943          * the variable again.
13944          */
13945         orig_next_vreg = cfg->next_vreg;
13946         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13947         lvregs_size = 1024;
13948         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13949         lvregs_len = 0;
13950
13951         /*
13952          * These arrays contain the first and last instructions accessing a given
13953          * variable.
13954          * Since we emit bblocks in the same order we process them here, and we
13955          * don't split live ranges, these will precisely describe the live range of
13956          * the variable, i.e. the instruction range where a valid value can be found
13957          * in the variables location.
13958          * The live range is computed using the liveness info computed by the liveness pass.
13959          * We can't use vmv->range, since that is an abstract live range, and we need
13960          * one which is instruction precise.
13961          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13962          */
13963         /* FIXME: Only do this if debugging info is requested */
13964         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13965         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13966         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13967         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13968
13969         /* Add spill loads/stores */
13970         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13971                 MonoInst *ins;
13972
13973                 if (cfg->verbose_level > 2)
13974                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13975
13976                 /* Clear vreg_to_lvreg array */
13977                 for (i = 0; i < lvregs_len; i++)
13978                         vreg_to_lvreg [lvregs [i]] = 0;
13979                 lvregs_len = 0;
13980
13981                 cfg->cbb = bb;
13982                 MONO_BB_FOR_EACH_INS (bb, ins) {
13983                         const char *spec = INS_INFO (ins->opcode);
13984                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13985                         gboolean store, no_lvreg;
13986                         int sregs [MONO_MAX_SRC_REGS];
13987
13988                         if (G_UNLIKELY (cfg->verbose_level > 2))
13989                                 mono_print_ins (ins);
13990
13991                         if (ins->opcode == OP_NOP)
13992                                 continue;
13993
13994                         /*
13995                          * We handle LDADDR here as well, since it can only be decomposed
13996                          * when variable addresses are known.
13997                          */
13998                         if (ins->opcode == OP_LDADDR) {
13999                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14000
14001                                 if (var->opcode == OP_VTARG_ADDR) {
14002                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14003                                         MonoInst *vtaddr = var->inst_left;
14004                                         if (vtaddr->opcode == OP_REGVAR) {
14005                                                 ins->opcode = OP_MOVE;
14006                                                 ins->sreg1 = vtaddr->dreg;
14007                                         }
14008                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14009                                                 ins->opcode = OP_LOAD_MEMBASE;
14010                                                 ins->inst_basereg = vtaddr->inst_basereg;
14011                                                 ins->inst_offset = vtaddr->inst_offset;
14012                                         } else
14013                                                 NOT_IMPLEMENTED;
14014                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14015                                         /* gsharedvt arg passed by ref */
14016                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14017
14018                                         ins->opcode = OP_LOAD_MEMBASE;
14019                                         ins->inst_basereg = var->inst_basereg;
14020                                         ins->inst_offset = var->inst_offset;
14021                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14022                                         MonoInst *load, *load2, *load3;
14023                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14024                                         int reg1, reg2, reg3;
14025                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14026                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14027
14028                                         /*
14029                                          * gsharedvt local.
14030                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14031                                          */
14032
14033                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14034
14035                                         g_assert (info_var);
14036                                         g_assert (locals_var);
14037
14038                                         /* Mark the instruction used to compute the locals var as used */
14039                                         cfg->gsharedvt_locals_var_ins = NULL;
14040
14041                                         /* Load the offset */
14042                                         if (info_var->opcode == OP_REGOFFSET) {
14043                                                 reg1 = alloc_ireg (cfg);
14044                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14045                                         } else if (info_var->opcode == OP_REGVAR) {
14046                                                 load = NULL;
14047                                                 reg1 = info_var->dreg;
14048                                         } else {
14049                                                 g_assert_not_reached ();
14050                                         }
14051                                         reg2 = alloc_ireg (cfg);
14052                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14053                                         /* Load the locals area address */
14054                                         reg3 = alloc_ireg (cfg);
14055                                         if (locals_var->opcode == OP_REGOFFSET) {
14056                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14057                                         } else if (locals_var->opcode == OP_REGVAR) {
14058                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14059                                         } else {
14060                                                 g_assert_not_reached ();
14061                                         }
14062                                         /* Compute the address */
14063                                         ins->opcode = OP_PADD;
14064                                         ins->sreg1 = reg3;
14065                                         ins->sreg2 = reg2;
14066
14067                                         mono_bblock_insert_before_ins (bb, ins, load3);
14068                                         mono_bblock_insert_before_ins (bb, load3, load2);
14069                                         if (load)
14070                                                 mono_bblock_insert_before_ins (bb, load2, load);
14071                                 } else {
14072                                         g_assert (var->opcode == OP_REGOFFSET);
14073
14074                                         ins->opcode = OP_ADD_IMM;
14075                                         ins->sreg1 = var->inst_basereg;
14076                                         ins->inst_imm = var->inst_offset;
14077                                 }
14078
14079                                 *need_local_opts = TRUE;
14080                                 spec = INS_INFO (ins->opcode);
14081                         }
14082
14083                         if (ins->opcode < MONO_CEE_LAST) {
14084                                 mono_print_ins (ins);
14085                                 g_assert_not_reached ();
14086                         }
14087
14088                         /*
14089                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14090                          * src register.
14091                          * FIXME:
14092                          */
14093                         if (MONO_IS_STORE_MEMBASE (ins)) {
14094                                 tmp_reg = ins->dreg;
14095                                 ins->dreg = ins->sreg2;
14096                                 ins->sreg2 = tmp_reg;
14097                                 store = TRUE;
14098
14099                                 spec2 [MONO_INST_DEST] = ' ';
14100                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14101                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14102                                 spec2 [MONO_INST_SRC3] = ' ';
14103                                 spec = spec2;
14104                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14105                                 g_assert_not_reached ();
14106                         else
14107                                 store = FALSE;
14108                         no_lvreg = FALSE;
14109
14110                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14111                                 printf ("\t %.3s %d", spec, ins->dreg);
14112                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14113                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14114                                         printf (" %d", sregs [srcindex]);
14115                                 printf ("\n");
14116                         }
14117
14118                         /***************/
14119                         /*    DREG     */
14120                         /***************/
14121                         regtype = spec [MONO_INST_DEST];
14122                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14123                         prev_dreg = -1;
14124
14125                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14126                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14127                                 MonoInst *store_ins;
14128                                 int store_opcode;
14129                                 MonoInst *def_ins = ins;
14130                                 int dreg = ins->dreg; /* The original vreg */
14131
14132                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14133
14134                                 if (var->opcode == OP_REGVAR) {
14135                                         ins->dreg = var->dreg;
14136                                 } 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)) {
14137                                         /*
14138                                          * Instead of emitting a load+store, use a _membase opcode.
14139                                          */
14140                                         g_assert (var->opcode == OP_REGOFFSET);
14141                                         if (ins->opcode == OP_MOVE) {
14142                                                 NULLIFY_INS (ins);
14143                                                 def_ins = NULL;
14144                                         } else {
14145                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14146                                                 ins->inst_basereg = var->inst_basereg;
14147                                                 ins->inst_offset = var->inst_offset;
14148                                                 ins->dreg = -1;
14149                                         }
14150                                         spec = INS_INFO (ins->opcode);
14151                                 } else {
14152                                         guint32 lvreg;
14153
14154                                         g_assert (var->opcode == OP_REGOFFSET);
14155
14156                                         prev_dreg = ins->dreg;
14157
14158                                         /* Invalidate any previous lvreg for this vreg */
14159                                         vreg_to_lvreg [ins->dreg] = 0;
14160
14161                                         lvreg = 0;
14162
14163                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14164                                                 regtype = 'l';
14165                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14166                                         }
14167
14168                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14169
14170 #if SIZEOF_REGISTER != 8
14171                                         if (regtype == 'l') {
14172                                                 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));
14173                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14174                                                 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));
14175                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14176                                                 def_ins = store_ins;
14177                                         }
14178                                         else
14179 #endif
14180                                         {
14181                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14182
14183                                                 /* Try to fuse the store into the instruction itself */
14184                                                 /* FIXME: Add more instructions */
14185                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14186                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14187                                                         ins->inst_imm = ins->inst_c0;
14188                                                         ins->inst_destbasereg = var->inst_basereg;
14189                                                         ins->inst_offset = var->inst_offset;
14190                                                         spec = INS_INFO (ins->opcode);
14191                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14192                                                         ins->opcode = store_opcode;
14193                                                         ins->inst_destbasereg = var->inst_basereg;
14194                                                         ins->inst_offset = var->inst_offset;
14195
14196                                                         no_lvreg = TRUE;
14197
14198                                                         tmp_reg = ins->dreg;
14199                                                         ins->dreg = ins->sreg2;
14200                                                         ins->sreg2 = tmp_reg;
14201                                                         store = TRUE;
14202
14203                                                         spec2 [MONO_INST_DEST] = ' ';
14204                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14205                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14206                                                         spec2 [MONO_INST_SRC3] = ' ';
14207                                                         spec = spec2;
14208                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14209                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14210                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14211                                                         ins->dreg = -1;
14212                                                         ins->inst_basereg = var->inst_basereg;
14213                                                         ins->inst_offset = var->inst_offset;
14214                                                         spec = INS_INFO (ins->opcode);
14215                                                 } else {
14216                                                         /* printf ("INS: "); mono_print_ins (ins); */
14217                                                         /* Create a store instruction */
14218                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14219
14220                                                         /* Insert it after the instruction */
14221                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14222
14223                                                         def_ins = store_ins;
14224
14225                                                         /*
14226                                                          * We can't assign ins->dreg to var->dreg here, since the
14227                                                          * sregs could use it. So set a flag, and do it after
14228                                                          * the sregs.
14229                                                          */
14230                                                         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)))
14231                                                                 dest_has_lvreg = TRUE;
14232                                                 }
14233                                         }
14234                                 }
14235
14236                                 if (def_ins && !live_range_start [dreg]) {
14237                                         live_range_start [dreg] = def_ins;
14238                                         live_range_start_bb [dreg] = bb;
14239                                 }
14240
14241                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14242                                         MonoInst *tmp;
14243
14244                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14245                                         tmp->inst_c1 = dreg;
14246                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14247                                 }
14248                         }
14249
14250                         /************/
14251                         /*  SREGS   */
14252                         /************/
14253                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14254                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14255                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14256                                 sreg = sregs [srcindex];
14257
14258                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14259                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14260                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14261                                         MonoInst *use_ins = ins;
14262                                         MonoInst *load_ins;
14263                                         guint32 load_opcode;
14264
14265                                         if (var->opcode == OP_REGVAR) {
14266                                                 sregs [srcindex] = var->dreg;
14267                                                 //mono_inst_set_src_registers (ins, sregs);
14268                                                 live_range_end [sreg] = use_ins;
14269                                                 live_range_end_bb [sreg] = bb;
14270
14271                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14272                                                         MonoInst *tmp;
14273
14274                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14275                                                         /* var->dreg is a hreg */
14276                                                         tmp->inst_c1 = sreg;
14277                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14278                                                 }
14279
14280                                                 continue;
14281                                         }
14282
14283                                         g_assert (var->opcode == OP_REGOFFSET);
14284
14285                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14286
14287                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14288
14289                                         if (vreg_to_lvreg [sreg]) {
14290                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14291
14292                                                 /* The variable is already loaded to an lvreg */
14293                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14294                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14295                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14296                                                 //mono_inst_set_src_registers (ins, sregs);
14297                                                 continue;
14298                                         }
14299
14300                                         /* Try to fuse the load into the instruction */
14301                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14302                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14303                                                 sregs [0] = var->inst_basereg;
14304                                                 //mono_inst_set_src_registers (ins, sregs);
14305                                                 ins->inst_offset = var->inst_offset;
14306                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14307                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14308                                                 sregs [1] = var->inst_basereg;
14309                                                 //mono_inst_set_src_registers (ins, sregs);
14310                                                 ins->inst_offset = var->inst_offset;
14311                                         } else {
14312                                                 if (MONO_IS_REAL_MOVE (ins)) {
14313                                                         ins->opcode = OP_NOP;
14314                                                         sreg = ins->dreg;
14315                                                 } else {
14316                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14317
14318                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14319
14320                                                         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) {
14321                                                                 if (var->dreg == prev_dreg) {
14322                                                                         /*
14323                                                                          * sreg refers to the value loaded by the load
14324                                                                          * emitted below, but we need to use ins->dreg
14325                                                                          * since it refers to the store emitted earlier.
14326                                                                          */
14327                                                                         sreg = ins->dreg;
14328                                                                 }
14329                                                                 g_assert (sreg != -1);
14330                                                                 vreg_to_lvreg [var->dreg] = sreg;
14331                                                                 if (lvregs_len >= lvregs_size) {
14332                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14333                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14334                                                                         lvregs = new_lvregs;
14335                                                                         lvregs_size *= 2;
14336                                                                 }
14337                                                                 lvregs [lvregs_len ++] = var->dreg;
14338                                                         }
14339                                                 }
14340
14341                                                 sregs [srcindex] = sreg;
14342                                                 //mono_inst_set_src_registers (ins, sregs);
14343
14344 #if SIZEOF_REGISTER != 8
14345                                                 if (regtype == 'l') {
14346                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14347                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14348                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14349                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14350                                                         use_ins = load_ins;
14351                                                 }
14352                                                 else
14353 #endif
14354                                                 {
14355 #if SIZEOF_REGISTER == 4
14356                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14357 #endif
14358                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14359                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14360                                                         use_ins = load_ins;
14361                                                 }
14362                                         }
14363
14364                                         if (var->dreg < orig_next_vreg) {
14365                                                 live_range_end [var->dreg] = use_ins;
14366                                                 live_range_end_bb [var->dreg] = bb;
14367                                         }
14368
14369                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14370                                                 MonoInst *tmp;
14371
14372                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14373                                                 tmp->inst_c1 = var->dreg;
14374                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14375                                         }
14376                                 }
14377                         }
14378                         mono_inst_set_src_registers (ins, sregs);
14379
14380                         if (dest_has_lvreg) {
14381                                 g_assert (ins->dreg != -1);
14382                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14383                                 if (lvregs_len >= lvregs_size) {
14384                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14385                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14386                                         lvregs = new_lvregs;
14387                                         lvregs_size *= 2;
14388                                 }
14389                                 lvregs [lvregs_len ++] = prev_dreg;
14390                                 dest_has_lvreg = FALSE;
14391                         }
14392
14393                         if (store) {
14394                                 tmp_reg = ins->dreg;
14395                                 ins->dreg = ins->sreg2;
14396                                 ins->sreg2 = tmp_reg;
14397                         }
14398
14399                         if (MONO_IS_CALL (ins)) {
14400                                 /* Clear vreg_to_lvreg array */
14401                                 for (i = 0; i < lvregs_len; i++)
14402                                         vreg_to_lvreg [lvregs [i]] = 0;
14403                                 lvregs_len = 0;
14404                         } else if (ins->opcode == OP_NOP) {
14405                                 ins->dreg = -1;
14406                                 MONO_INST_NULLIFY_SREGS (ins);
14407                         }
14408
14409                         if (cfg->verbose_level > 2)
14410                                 mono_print_ins_index (1, ins);
14411                 }
14412
14413                 /* Extend the live range based on the liveness info */
14414                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14415                         for (i = 0; i < cfg->num_varinfo; i ++) {
14416                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14417
14418                                 if (vreg_is_volatile (cfg, vi->vreg))
14419                                         /* The liveness info is incomplete */
14420                                         continue;
14421
14422                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14423                                         /* Live from at least the first ins of this bb */
14424                                         live_range_start [vi->vreg] = bb->code;
14425                                         live_range_start_bb [vi->vreg] = bb;
14426                                 }
14427
14428                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14429                                         /* Live at least until the last ins of this bb */
14430                                         live_range_end [vi->vreg] = bb->last_ins;
14431                                         live_range_end_bb [vi->vreg] = bb;
14432                                 }
14433                         }
14434                 }
14435         }
14436
14437         /*
14438          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14439          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14440          */
14441         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14442                 for (i = 0; i < cfg->num_varinfo; ++i) {
14443                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14444                         MonoInst *ins;
14445
14446                         if (live_range_start [vreg]) {
14447                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14448                                 ins->inst_c0 = i;
14449                                 ins->inst_c1 = vreg;
14450                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14451                         }
14452                         if (live_range_end [vreg]) {
14453                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14454                                 ins->inst_c0 = i;
14455                                 ins->inst_c1 = vreg;
14456                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14457                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14458                                 else
14459                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14460                         }
14461                 }
14462         }
14463
14464         if (cfg->gsharedvt_locals_var_ins) {
14465                 /* Nullify if unused */
14466                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14467                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14468         }
14469
14470         g_free (live_range_start);
14471         g_free (live_range_end);
14472         g_free (live_range_start_bb);
14473         g_free (live_range_end_bb);
14474 }
14475
14476
14477 /**
14478  * FIXME:
14479  * - use 'iadd' instead of 'int_add'
14480  * - handling ovf opcodes: decompose in method_to_ir.
14481  * - unify iregs/fregs
14482  *   -> partly done, the missing parts are:
14483  *   - a more complete unification would involve unifying the hregs as well, so
14484  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14485  *     would no longer map to the machine hregs, so the code generators would need to
14486  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14487  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14488  *     fp/non-fp branches speeds it up by about 15%.
14489  * - use sext/zext opcodes instead of shifts
14490  * - add OP_ICALL
14491  * - get rid of TEMPLOADs if possible and use vregs instead
14492  * - clean up usage of OP_P/OP_ opcodes
14493  * - cleanup usage of DUMMY_USE
14494  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14495  *   stack
14496  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14497  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14498  * - make sure handle_stack_args () is called before the branch is emitted
14499  * - when the new IR is done, get rid of all unused stuff
14500  * - COMPARE/BEQ as separate instructions or unify them ?
14501  *   - keeping them separate allows specialized compare instructions like
14502  *     compare_imm, compare_membase
14503  *   - most back ends unify fp compare+branch, fp compare+ceq
14504  * - integrate mono_save_args into inline_method
14505  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14506  * - handle long shift opts on 32 bit platforms somehow: they require
14507  *   3 sregs (2 for arg1 and 1 for arg2)
14508  * - make byref a 'normal' type.
14509  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14510  *   variable if needed.
14511  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14512  *   like inline_method.
14513  * - remove inlining restrictions
14514  * - fix LNEG and enable cfold of INEG
14515  * - generalize x86 optimizations like ldelema as a peephole optimization
14516  * - add store_mem_imm for amd64
14517  * - optimize the loading of the interruption flag in the managed->native wrappers
14518  * - avoid special handling of OP_NOP in passes
14519  * - move code inserting instructions into one function/macro.
14520  * - try a coalescing phase after liveness analysis
14521  * - add float -> vreg conversion + local optimizations on !x86
14522  * - figure out how to handle decomposed branches during optimizations, ie.
14523  *   compare+branch, op_jump_table+op_br etc.
14524  * - promote RuntimeXHandles to vregs
14525  * - vtype cleanups:
14526  *   - add a NEW_VARLOADA_VREG macro
14527  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14528  *   accessing vtype fields.
14529  * - get rid of I8CONST on 64 bit platforms
14530  * - dealing with the increase in code size due to branches created during opcode
14531  *   decomposition:
14532  *   - use extended basic blocks
14533  *     - all parts of the JIT
14534  *     - handle_global_vregs () && local regalloc
14535  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14536  * - sources of increase in code size:
14537  *   - vtypes
14538  *   - long compares
14539  *   - isinst and castclass
14540  *   - lvregs not allocated to global registers even if used multiple times
14541  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14542  *   meaningful.
14543  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14544  * - add all micro optimizations from the old JIT
14545  * - put tree optimizations into the deadce pass
14546  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14547  *   specific function.
14548  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14549  *   fcompare + branchCC.
14550  * - create a helper function for allocating a stack slot, taking into account
14551  *   MONO_CFG_HAS_SPILLUP.
14552  * - merge r68207.
14553  * - merge the ia64 switch changes.
14554  * - optimize mono_regstate2_alloc_int/float.
14555  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14556  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14557  *   parts of the tree could be separated by other instructions, killing the tree
14558  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14559  *   instructions if the result of the load is used multiple times ?
14560  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14561  * - LAST MERGE: 108395.
14562  * - when returning vtypes in registers, generate IR and append it to the end of the
14563  *   last bb instead of doing it in the epilog.
14564  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14565  */
14566
14567 /*
14568
14569 NOTES
14570 -----
14571
14572 - When to decompose opcodes:
14573   - earlier: this makes some optimizations hard to implement, since the low level IR
14574   no longer contains the neccessary information. But it is easier to do.
14575   - later: harder to implement, enables more optimizations.
14576 - Branches inside bblocks:
14577   - created when decomposing complex opcodes.
14578     - branches to another bblock: harmless, but not tracked by the branch
14579       optimizations, so need to branch to a label at the start of the bblock.
14580     - branches to inside the same bblock: very problematic, trips up the local
14581       reg allocator. Can be fixed by spitting the current bblock, but that is a
14582       complex operation, since some local vregs can become global vregs etc.
14583 - Local/global vregs:
14584   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14585     local register allocator.
14586   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14587     structure, created by mono_create_var (). Assigned to hregs or the stack by
14588     the global register allocator.
14589 - When to do optimizations like alu->alu_imm:
14590   - earlier -> saves work later on since the IR will be smaller/simpler
14591   - later -> can work on more instructions
14592 - Handling of valuetypes:
14593   - When a vtype is pushed on the stack, a new temporary is created, an
14594     instruction computing its address (LDADDR) is emitted and pushed on
14595     the stack. Need to optimize cases when the vtype is used immediately as in
14596     argument passing, stloc etc.
14597 - Instead of the to_end stuff in the old JIT, simply call the function handling
14598   the values on the stack before emitting the last instruction of the bb.
14599 */
14600
14601 #else /* !DISABLE_JIT */
14602
14603 void
14604 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
14605 {
14606 }
14607
14608 #endif /* !DISABLE_JIT */