mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  */
  12
  13 #include <config.h>
  14
  15 #ifndef DISABLE_JIT
  16
  17 #include <signal.h>
  18
  19 #ifdef HAVE_UNISTD_H
  20 #include <unistd.h>
  21 #endif
  22
  23 #include <math.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26
  27 #ifdef HAVE_SYS_TIME_H
  28 #include <sys/time.h>
  29 #endif
  30
  31 #ifdef HAVE_ALLOCA_H
  32 #include <alloca.h>
  33 #endif
  34
  35 #include <mono/utils/memcheck.h>
  36 #include "mini.h"
  37 #include <mono/metadata/abi-details.h>
  38 #include <mono/metadata/assembly.h>
  39 #include <mono/metadata/attrdefs.h>
  40 #include <mono/metadata/loader.h>
  41 #include <mono/metadata/tabledefs.h>
  42 #include <mono/metadata/class.h>
  43 #include <mono/metadata/object.h>
  44 #include <mono/metadata/exception.h>
  45 #include <mono/metadata/opcodes.h>
  46 #include <mono/metadata/mono-endian.h>
  47 #include <mono/metadata/tokentype.h>
  48 #include <mono/metadata/tabledefs.h>
  49 #include <mono/metadata/marshal.h>
  50 #include <mono/metadata/debug-helpers.h>
  51 #include <mono/metadata/mono-debug.h>
  52 #include <mono/metadata/mono-debug-debugger.h>
  53 #include <mono/metadata/gc-internal.h>
  54 #include <mono/metadata/security-manager.h>
  55 #include <mono/metadata/threads-types.h>
  56 #include <mono/metadata/security-core-clr.h>
  57 #include <mono/metadata/monitor.h>
  58 #include <mono/metadata/profiler-private.h>
  59 #include <mono/metadata/profiler.h>
  60 #include <mono/metadata/debug-mono-symfile.h>
  61 #include <mono/utils/mono-compiler.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/metadata/mono-basic-block.h>
  64
  65 #include "trace.h"
  66
  67 #include "ir-emit.h"
  68
  69 #include "jit-icalls.h"
  70 #include "jit.h"
  71 #include "debugger-agent.h"
  72 #include "seq-points.h"
  73
  74 #define BRANCH_COST 10
  75 #define INLINE_LENGTH_LIMIT 20
  76
  77 /* These have 'cfg' as an implicit argument */
  78 #define INLINE_FAILURE(msg) do {                                                                        \
  79         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  80                 inline_failure (cfg, msg);                                                                              \
  81                 goto exception_exit;                                                                                    \
  82         } \
  83         } while (0)
  84 #define CHECK_CFG_EXCEPTION do {\
  85                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  86                         goto exception_exit;                                            \
  87         } while (0)
  88 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  89                 method_access_failure ((cfg), (method), (cmethod));                     \
  90                 goto exception_exit;                                                                            \
  91         } while (0)
  92 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  93                 field_access_failure ((cfg), (method), (field));                        \
  94                 goto exception_exit;    \
  95         } while (0)
  96 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  97                 if (cfg->gshared) {                                                                     \
  98                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
  99                         goto exception_exit;    \
 100                 }                       \
 101         } while (0)
 102 #define GSHAREDVT_FAILURE(opcode) do {          \
 103         if (cfg->gsharedvt) {                                                                                           \
 104                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 105                 goto exception_exit;                                                                                    \
 106         }                                                                                                                                       \
 107         } while (0)
 108 #define OUT_OF_MEMORY_FAILURE do {      \
 109                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_OUT_OF_MEMORY);             \
 110                 goto exception_exit;    \
 111         } while (0)
 112 #define DISABLE_AOT(cfg) do { \
 113                 if ((cfg)->verbose_level >= 2)                                            \
 114                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 115                 (cfg)->disable_aot = TRUE;                                                        \
 116         } while (0)
 117 #define LOAD_ERROR do { \
 118                 break_on_unverified ();                                                         \
 119                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 120                 goto exception_exit;                                                                    \
 121         } while (0)
 122
 123 #define TYPE_LOAD_ERROR(klass) do { \
 124                 cfg->exception_ptr = klass; \
 125                 LOAD_ERROR;                                     \
 126         } while (0)
 127
 128 #define CHECK_CFG_ERROR do {\
 129                 if (!mono_error_ok (&cfg->error)) { \
 130                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 131                         goto mono_error_exit; \
 132                 } \
 133         } while (0)
 134
 135 /* Determine whenever 'ins' represents a load of the 'this' argument */
 136 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 137
 138 static int ldind_to_load_membase (int opcode);
 139 static int stind_to_store_membase (int opcode);
 140
 141 int mono_op_to_op_imm (int opcode);
 142 int mono_op_to_op_imm_noemul (int opcode);
 143
 144 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always, MonoBasicBlock **out_cbb);
 148
 149 /* helper methods signatures */
 150 static MonoMethodSignature *helper_sig_class_init_trampoline;
 151 static MonoMethodSignature *helper_sig_domain_get;
 152 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 153 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline;
 154 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline_llvm;
 155 static MonoMethodSignature *helper_sig_monitor_enter_v4_trampoline_llvm;
 156
 157 /*
 158  * Instruction metadata
 159  */
 160 #ifdef MINI_OP
 161 #undef MINI_OP
 162 #endif
 163 #ifdef MINI_OP3
 164 #undef MINI_OP3
 165 #endif
 166 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 167 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 168 #define NONE ' '
 169 #define IREG 'i'
 170 #define FREG 'f'
 171 #define VREG 'v'
 172 #define XREG 'x'
 173 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 174 #define LREG IREG
 175 #else
 176 #define LREG 'l'
 177 #endif
 178 /* keep in sync with the enum in mini.h */
 179 const char
 180 ins_info[] = {
 181 #include "mini-ops.h"
 182 };
 183 #undef MINI_OP
 184 #undef MINI_OP3
 185
 186 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 187 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 188 /*
 189  * This should contain the index of the last sreg + 1. This is not the same
 190  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 191  */
 192 const gint8 ins_sreg_counts[] = {
 193 #include "mini-ops.h"
 194 };
 195 #undef MINI_OP
 196 #undef MINI_OP3
 197
 198 #define MONO_INIT_VARINFO(vi,id) do { \
 199         (vi)->range.first_use.pos.bid = 0xffff; \
 200         (vi)->reg = -1; \
 201         (vi)->idx = (id); \
 202 } while (0)
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (cfg, type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 type = &type->data.generic_class->container_class->byval_arg;
 324                 goto handle_enum;
 325         case MONO_TYPE_VAR:
 326         case MONO_TYPE_MVAR:
 327                 g_assert (cfg->generic_sharing_context);
 328                 if (mini_type_var_is_vt (cfg, type))
 329                         return OP_VMOVE;
 330                 else
 331                         return mono_type_to_regmove (cfg, mini_get_underlying_type (cfg, type));
 332         default:
 333                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 334         }
 335         return -1;
 336 }
 337
 338 void
 339 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 340 {
 341         int i;
 342         MonoInst *tree;
 343
 344         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 345         for (i = 0; i < bb->in_count; ++i)
 346                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 347         printf (", OUT: ");
 348         for (i = 0; i < bb->out_count; ++i)
 349                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 350         printf (" ]\n");
 351         for (tree = bb->code; tree; tree = tree->next)
 352                 mono_print_ins_index (-1, tree);
 353 }
 354
 355 void
 356 mono_create_helper_signatures (void)
 357 {
 358         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 359         helper_sig_class_init_trampoline = mono_create_icall_signature ("void");
 360         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 361         helper_sig_monitor_enter_exit_trampoline = mono_create_icall_signature ("void");
 362         helper_sig_monitor_enter_exit_trampoline_llvm = mono_create_icall_signature ("void object");
 363         helper_sig_monitor_enter_v4_trampoline_llvm = mono_create_icall_signature ("void object ptr");
 364 }
 365
 366 static MONO_NEVER_INLINE void
 367 break_on_unverified (void)
 368 {
 369         if (mini_get_debug_options ()->break_on_unverified)
 370                 G_BREAKPOINT ();
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 375 {
 376         char *method_fname = mono_method_full_name (method, TRUE);
 377         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 378         mono_cfg_set_exception (cfg, MONO_EXCEPTION_METHOD_ACCESS);
 379         cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 380         g_free (method_fname);
 381         g_free (cil_method_fname);
 382 }
 383
 384 static MONO_NEVER_INLINE void
 385 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 386 {
 387         char *method_fname = mono_method_full_name (method, TRUE);
 388         char *field_fname = mono_field_full_name (field);
 389         mono_cfg_set_exception (cfg, MONO_EXCEPTION_FIELD_ACCESS);
 390         cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 391         g_free (method_fname);
 392         g_free (field_fname);
 393 }
 394
 395 static MONO_NEVER_INLINE void
 396 inline_failure (MonoCompile *cfg, const char *msg)
 397 {
 398         if (cfg->verbose_level >= 2)
 399                 printf ("inline failed: %s\n", msg);
 400         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 401 }
 402
 403 static MONO_NEVER_INLINE void
 404 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 405 {
 406         if (cfg->verbose_level > 2)                                                                                     \
 407                 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);
 408         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 409 }
 410
 411 static MONO_NEVER_INLINE void
 412 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 413 {
 414         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);
 415         if (cfg->verbose_level >= 2)
 416                 printf ("%s\n", cfg->exception_message);
 417         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 418 }
 419
 420 /*
 421  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 422  * foo<T> (int i) { ldarg.0; box T; }
 423  */
 424 #define UNVERIFIED do { \
 425         if (cfg->gsharedvt) { \
 426                 if (cfg->verbose_level > 2)                                                                     \
 427                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 428                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 429                 goto exception_exit;                                                                                    \
 430         }                                                                                                                                       \
 431         break_on_unverified ();                                                                                         \
 432         goto unverified;                                                                                                        \
 433 } while (0)
 434
 435 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 436                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 437                 if (!(tblock)) {        \
 438                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 439             NEW_BBLOCK (cfg, (tblock)); \
 440                         (tblock)->cil_code = (ip);      \
 441                         ADD_BBLOCK (cfg, (tblock));     \
 442                 } \
 443         } while (0)
 444
 445 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 446 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 447                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 448                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 449                 (dest)->sreg1 = (sr1); \
 450                 (dest)->sreg2 = (sr2); \
 451                 (dest)->inst_imm = (imm); \
 452                 (dest)->backend.shift_amount = (shift); \
 453                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 454         } while (0)
 455 #endif
 456
 457 /* Emit conversions so both operands of a binary opcode are of the same type */
 458 static void
 459 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 460 {
 461         MonoInst *arg1 = *arg1_ref;
 462         MonoInst *arg2 = *arg2_ref;
 463
 464         if (cfg->r4fp &&
 465                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 466                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 467                 MonoInst *conv;
 468
 469                 /* Mixing r4/r8 is allowed by the spec */
 470                 if (arg1->type == STACK_R4) {
 471                         int dreg = alloc_freg (cfg);
 472
 473                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 474                         conv->type = STACK_R8;
 475                         ins->sreg1 = dreg;
 476                         *arg1_ref = conv;
 477                 }
 478                 if (arg2->type == STACK_R4) {
 479                         int dreg = alloc_freg (cfg);
 480
 481                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 482                         conv->type = STACK_R8;
 483                         ins->sreg2 = dreg;
 484                         *arg2_ref = conv;
 485                 }
 486         }
 487
 488 #if SIZEOF_REGISTER == 8
 489         /* FIXME: Need to add many more cases */
 490         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 491                 MonoInst *widen;
 492
 493                 int dr = alloc_preg (cfg);
 494                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 495                 (ins)->sreg2 = widen->dreg;
 496         }
 497 #endif
 498 }
 499
 500 #define ADD_BINOP(op) do {      \
 501                 MONO_INST_NEW (cfg, ins, (op)); \
 502                 sp -= 2;        \
 503                 ins->sreg1 = sp [0]->dreg;      \
 504                 ins->sreg2 = sp [1]->dreg;      \
 505                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 506                 CHECK_TYPE (ins);       \
 507                 /* Have to insert a widening op */               \
 508         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 509         ins->dreg = alloc_dreg ((cfg), (ins)->type); \
 510         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 511         *sp++ = mono_decompose_opcode ((cfg), (ins), &bblock);  \
 512         } while (0)
 513
 514 #define ADD_UNOP(op) do {       \
 515                 MONO_INST_NEW (cfg, ins, (op)); \
 516                 sp--;   \
 517                 ins->sreg1 = sp [0]->dreg;      \
 518                 type_from_op (cfg, ins, sp [0], NULL);  \
 519                 CHECK_TYPE (ins);       \
 520         (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
 521         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 522                 *sp++ = mono_decompose_opcode (cfg, ins, &bblock);      \
 523         } while (0)
 524
 525 #define ADD_BINCOND(next_block) do {    \
 526                 MonoInst *cmp;  \
 527                 sp -= 2; \
 528                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 529                 cmp->sreg1 = sp [0]->dreg;      \
 530                 cmp->sreg2 = sp [1]->dreg;      \
 531                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 532                 CHECK_TYPE (cmp);       \
 533                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 534                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 535                 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);      \
 536                 GET_BBLOCK (cfg, tblock, target);               \
 537                 link_bblock (cfg, bblock, tblock);      \
 538                 ins->inst_true_bb = tblock;     \
 539                 if ((next_block)) {     \
 540                         link_bblock (cfg, bblock, (next_block));        \
 541                         ins->inst_false_bb = (next_block);      \
 542                         start_new_bblock = 1;   \
 543                 } else {        \
 544                         GET_BBLOCK (cfg, tblock, ip);           \
 545                         link_bblock (cfg, bblock, tblock);      \
 546                         ins->inst_false_bb = tblock;    \
 547                         start_new_bblock = 2;   \
 548                 }       \
 549                 if (sp != stack_start) {                                                                        \
 550                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 551                         CHECK_UNVERIFIABLE (cfg); \
 552                 } \
 553         MONO_ADD_INS (bblock, cmp); \
 554                 MONO_ADD_INS (bblock, ins);     \
 555         } while (0)
 556
 557 /* *
 558  * link_bblock: Links two basic blocks
 559  *
 560  * links two basic blocks in the control flow graph, the 'from'
 561  * argument is the starting block and the 'to' argument is the block
 562  * the control flow ends to after 'from'.
 563  */
 564 static void
 565 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 566 {
 567         MonoBasicBlock **newa;
 568         int i, found;
 569
 570 #if 0
 571         if (from->cil_code) {
 572                 if (to->cil_code)
 573                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 574                 else
 575                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 576         } else {
 577                 if (to->cil_code)
 578                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 579                 else
 580                         printf ("edge from entry to exit\n");
 581         }
 582 #endif
 583
 584         found = FALSE;
 585         for (i = 0; i < from->out_count; ++i) {
 586                 if (to == from->out_bb [i]) {
 587                         found = TRUE;
 588                         break;
 589                 }
 590         }
 591         if (!found) {
 592                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 593                 for (i = 0; i < from->out_count; ++i) {
 594                         newa [i] = from->out_bb [i];
 595                 }
 596                 newa [i] = to;
 597                 from->out_count++;
 598                 from->out_bb = newa;
 599         }
 600
 601         found = FALSE;
 602         for (i = 0; i < to->in_count; ++i) {
 603                 if (from == to->in_bb [i]) {
 604                         found = TRUE;
 605                         break;
 606                 }
 607         }
 608         if (!found) {
 609                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 610                 for (i = 0; i < to->in_count; ++i) {
 611                         newa [i] = to->in_bb [i];
 612                 }
 613                 newa [i] = from;
 614                 to->in_count++;
 615                 to->in_bb = newa;
 616         }
 617 }
 618
 619 void
 620 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 621 {
 622         link_bblock (cfg, from, to);
 623 }
 624
 625 /**
 626  * mono_find_block_region:
 627  *
 628  *   We mark each basic block with a region ID. We use that to avoid BB
 629  *   optimizations when blocks are in different regions.
 630  *
 631  * Returns:
 632  *   A region token that encodes where this region is, and information
 633  *   about the clause owner for this block.
 634  *
 635  *   The region encodes the try/catch/filter clause that owns this block
 636  *   as well as the type.  -1 is a special value that represents a block
 637  *   that is in none of try/catch/filter.
 638  */
 639 static int
 640 mono_find_block_region (MonoCompile *cfg, int offset)
 641 {
 642         MonoMethodHeader *header = cfg->header;
 643         MonoExceptionClause *clause;
 644         int i;
 645
 646         for (i = 0; i < header->num_clauses; ++i) {
 647                 clause = &header->clauses [i];
 648                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 649                     (offset < (clause->handler_offset)))
 650                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 651
 652                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 653                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 654                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 655                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 656                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 657                         else
 658                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 659                 }
 660         }
 661         for (i = 0; i < header->num_clauses; ++i) {
 662                 clause = &header->clauses [i];
 663
 664                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 665                         return ((i + 1) << 8) | clause->flags;
 666         }
 667
 668         return -1;
 669 }
 670
 671 static GList*
 672 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 673 {
 674         MonoMethodHeader *header = cfg->header;
 675         MonoExceptionClause *clause;
 676         int i;
 677         GList *res = NULL;
 678
 679         for (i = 0; i < header->num_clauses; ++i) {
 680                 clause = &header->clauses [i];
 681                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 682                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 683                         if (clause->flags == type)
 684                                 res = g_list_append (res, clause);
 685                 }
 686         }
 687         return res;
 688 }
 689
 690 static void
 691 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 692 {
 693         MonoInst *var;
 694
 695         var = g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 696         if (var)
 697                 return;
 698
 699         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 700         /* prevent it from being register allocated */
 701         var->flags |= MONO_INST_VOLATILE;
 702
 703         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 704 }
 705
 706 MonoInst *
 707 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 708 {
 709         return g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 710 }
 711
 712 static MonoInst*
 713 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 714 {
 715         MonoInst *var;
 716
 717         var = g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 718         if (var)
 719                 return var;
 720
 721         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 722         /* prevent it from being register allocated */
 723         var->flags |= MONO_INST_VOLATILE;
 724
 725         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 726
 727         return var;
 728 }
 729
 730 /*
 731  * Returns the type used in the eval stack when @type is loaded.
 732  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 733  */
 734 void
 735 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 736 {
 737         MonoClass *klass;
 738
 739         type = mini_get_underlying_type (cfg, type);
 740         inst->klass = klass = mono_class_from_mono_type (type);
 741         if (type->byref) {
 742                 inst->type = STACK_MP;
 743                 return;
 744         }
 745
 746 handle_enum:
 747         switch (type->type) {
 748         case MONO_TYPE_VOID:
 749                 inst->type = STACK_INV;
 750                 return;
 751         case MONO_TYPE_I1:
 752         case MONO_TYPE_U1:
 753         case MONO_TYPE_I2:
 754         case MONO_TYPE_U2:
 755         case MONO_TYPE_I4:
 756         case MONO_TYPE_U4:
 757                 inst->type = STACK_I4;
 758                 return;
 759         case MONO_TYPE_I:
 760         case MONO_TYPE_U:
 761         case MONO_TYPE_PTR:
 762         case MONO_TYPE_FNPTR:
 763                 inst->type = STACK_PTR;
 764                 return;
 765         case MONO_TYPE_CLASS:
 766         case MONO_TYPE_STRING:
 767         case MONO_TYPE_OBJECT:
 768         case MONO_TYPE_SZARRAY:
 769         case MONO_TYPE_ARRAY:
 770                 inst->type = STACK_OBJ;
 771                 return;
 772         case MONO_TYPE_I8:
 773         case MONO_TYPE_U8:
 774                 inst->type = STACK_I8;
 775                 return;
 776         case MONO_TYPE_R4:
 777                 inst->type = cfg->r4_stack_type;
 778                 break;
 779         case MONO_TYPE_R8:
 780                 inst->type = STACK_R8;
 781                 return;
 782         case MONO_TYPE_VALUETYPE:
 783                 if (type->data.klass->enumtype) {
 784                         type = mono_class_enum_basetype (type->data.klass);
 785                         goto handle_enum;
 786                 } else {
 787                         inst->klass = klass;
 788                         inst->type = STACK_VTYPE;
 789                         return;
 790                 }
 791         case MONO_TYPE_TYPEDBYREF:
 792                 inst->klass = mono_defaults.typed_reference_class;
 793                 inst->type = STACK_VTYPE;
 794                 return;
 795         case MONO_TYPE_GENERICINST:
 796                 type = &type->data.generic_class->container_class->byval_arg;
 797                 goto handle_enum;
 798         case MONO_TYPE_VAR:
 799         case MONO_TYPE_MVAR:
 800                 g_assert (cfg->generic_sharing_context);
 801                 if (mini_is_gsharedvt_type (cfg, type)) {
 802                         g_assert (cfg->gsharedvt);
 803                         inst->type = STACK_VTYPE;
 804                 } else {
 805                         type_to_eval_stack_type (cfg, mini_get_underlying_type (cfg, type), inst);
 806                 }
 807                 return;
 808         default:
 809                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 810         }
 811 }
 812
 813 /*
 814  * The following tables are used to quickly validate the IL code in type_from_op ().
 815  */
 816 static const char
 817 bin_num_table [STACK_MAX] [STACK_MAX] = {
 818         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 819         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 820         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 821         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 822         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 823         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 824         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 825         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 827 };
 828
 829 static const char
 830 neg_table [] = {
 831         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 832 };
 833
 834 /* reduce the size of this table */
 835 static const char
 836 bin_int_table [STACK_MAX] [STACK_MAX] = {
 837         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, 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_INV, STACK_INV, STACK_INV, STACK_INV},
 844         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 845 };
 846
 847 static const char
 848 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 849 /*      Inv i  L  p  F  &  O  vt r4 */
 850         {0},
 851         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 852         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 853         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 854         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 855         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 856         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 857         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 858         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 859 };
 860
 861 /* reduce the size of this table */
 862 static const char
 863 shift_table [STACK_MAX] [STACK_MAX] = {
 864         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 865         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 866         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 867         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 868         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 869         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 870         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 871         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 872 };
 873
 874 /*
 875  * Tables to map from the non-specific opcode to the matching
 876  * type-specific opcode.
 877  */
 878 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 879 static const guint16
 880 binops_op_map [STACK_MAX] = {
 881         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
 882 };
 883
 884 /* handles from CEE_NEG to CEE_CONV_U8 */
 885 static const guint16
 886 unops_op_map [STACK_MAX] = {
 887         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
 888 };
 889
 890 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 891 static const guint16
 892 ovfops_op_map [STACK_MAX] = {
 893         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
 894 };
 895
 896 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 897 static const guint16
 898 ovf2ops_op_map [STACK_MAX] = {
 899         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
 900 };
 901
 902 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 903 static const guint16
 904 ovf3ops_op_map [STACK_MAX] = {
 905         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
 906 };
 907
 908 /* handles from CEE_BEQ to CEE_BLT_UN */
 909 static const guint16
 910 beqops_op_map [STACK_MAX] = {
 911         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
 912 };
 913
 914 /* handles from CEE_CEQ to CEE_CLT_UN */
 915 static const guint16
 916 ceqops_op_map [STACK_MAX] = {
 917         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
 918 };
 919
 920 /*
 921  * Sets ins->type (the type on the eval stack) according to the
 922  * type of the opcode and the arguments to it.
 923  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 924  *
 925  * FIXME: this function sets ins->type unconditionally in some cases, but
 926  * it should set it to invalid for some types (a conv.x on an object)
 927  */
 928 static void
 929 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 930 {
 931         switch (ins->opcode) {
 932         /* binops */
 933         case CEE_ADD:
 934         case CEE_SUB:
 935         case CEE_MUL:
 936         case CEE_DIV:
 937         case CEE_REM:
 938                 /* FIXME: check unverifiable args for STACK_MP */
 939                 ins->type = bin_num_table [src1->type] [src2->type];
 940                 ins->opcode += binops_op_map [ins->type];
 941                 break;
 942         case CEE_DIV_UN:
 943         case CEE_REM_UN:
 944         case CEE_AND:
 945         case CEE_OR:
 946         case CEE_XOR:
 947                 ins->type = bin_int_table [src1->type] [src2->type];
 948                 ins->opcode += binops_op_map [ins->type];
 949                 break;
 950         case CEE_SHL:
 951         case CEE_SHR:
 952         case CEE_SHR_UN:
 953                 ins->type = shift_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case OP_COMPARE:
 957         case OP_LCOMPARE:
 958         case OP_ICOMPARE:
 959                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 960                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 961                         ins->opcode = OP_LCOMPARE;
 962                 else if (src1->type == STACK_R4)
 963                         ins->opcode = OP_RCOMPARE;
 964                 else if (src1->type == STACK_R8)
 965                         ins->opcode = OP_FCOMPARE;
 966                 else
 967                         ins->opcode = OP_ICOMPARE;
 968                 break;
 969         case OP_ICOMPARE_IMM:
 970                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 971                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 972                         ins->opcode = OP_LCOMPARE_IMM;
 973                 break;
 974         case CEE_BEQ:
 975         case CEE_BGE:
 976         case CEE_BGT:
 977         case CEE_BLE:
 978         case CEE_BLT:
 979         case CEE_BNE_UN:
 980         case CEE_BGE_UN:
 981         case CEE_BGT_UN:
 982         case CEE_BLE_UN:
 983         case CEE_BLT_UN:
 984                 ins->opcode += beqops_op_map [src1->type];
 985                 break;
 986         case OP_CEQ:
 987                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 988                 ins->opcode += ceqops_op_map [src1->type];
 989                 break;
 990         case OP_CGT:
 991         case OP_CGT_UN:
 992         case OP_CLT:
 993         case OP_CLT_UN:
 994                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 995                 ins->opcode += ceqops_op_map [src1->type];
 996                 break;
 997         /* unops */
 998         case CEE_NEG:
 999                 ins->type = neg_table [src1->type];
1000                 ins->opcode += unops_op_map [ins->type];
1001                 break;
1002         case CEE_NOT:
1003                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1004                         ins->type = src1->type;
1005                 else
1006                         ins->type = STACK_INV;
1007                 ins->opcode += unops_op_map [ins->type];
1008                 break;
1009         case CEE_CONV_I1:
1010         case CEE_CONV_I2:
1011         case CEE_CONV_I4:
1012         case CEE_CONV_U4:
1013                 ins->type = STACK_I4;
1014                 ins->opcode += unops_op_map [src1->type];
1015                 break;
1016         case CEE_CONV_R_UN:
1017                 ins->type = STACK_R8;
1018                 switch (src1->type) {
1019                 case STACK_I4:
1020                 case STACK_PTR:
1021                         ins->opcode = OP_ICONV_TO_R_UN;
1022                         break;
1023                 case STACK_I8:
1024                         ins->opcode = OP_LCONV_TO_R_UN;
1025                         break;
1026                 }
1027                 break;
1028         case CEE_CONV_OVF_I1:
1029         case CEE_CONV_OVF_U1:
1030         case CEE_CONV_OVF_I2:
1031         case CEE_CONV_OVF_U2:
1032         case CEE_CONV_OVF_I4:
1033         case CEE_CONV_OVF_U4:
1034                 ins->type = STACK_I4;
1035                 ins->opcode += ovf3ops_op_map [src1->type];
1036                 break;
1037         case CEE_CONV_OVF_I_UN:
1038         case CEE_CONV_OVF_U_UN:
1039                 ins->type = STACK_PTR;
1040                 ins->opcode += ovf2ops_op_map [src1->type];
1041                 break;
1042         case CEE_CONV_OVF_I1_UN:
1043         case CEE_CONV_OVF_I2_UN:
1044         case CEE_CONV_OVF_I4_UN:
1045         case CEE_CONV_OVF_U1_UN:
1046         case CEE_CONV_OVF_U2_UN:
1047         case CEE_CONV_OVF_U4_UN:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf2ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_U:
1052                 ins->type = STACK_PTR;
1053                 switch (src1->type) {
1054                 case STACK_I4:
1055                         ins->opcode = OP_ICONV_TO_U;
1056                         break;
1057                 case STACK_PTR:
1058                 case STACK_MP:
1059 #if SIZEOF_VOID_P == 8
1060                         ins->opcode = OP_LCONV_TO_U;
1061 #else
1062                         ins->opcode = OP_MOVE;
1063 #endif
1064                         break;
1065                 case STACK_I8:
1066                         ins->opcode = OP_LCONV_TO_U;
1067                         break;
1068                 case STACK_R8:
1069                         ins->opcode = OP_FCONV_TO_U;
1070                         break;
1071                 }
1072                 break;
1073         case CEE_CONV_I8:
1074         case CEE_CONV_U8:
1075                 ins->type = STACK_I8;
1076                 ins->opcode += unops_op_map [src1->type];
1077                 break;
1078         case CEE_CONV_OVF_I8:
1079         case CEE_CONV_OVF_U8:
1080                 ins->type = STACK_I8;
1081                 ins->opcode += ovf3ops_op_map [src1->type];
1082                 break;
1083         case CEE_CONV_OVF_U8_UN:
1084         case CEE_CONV_OVF_I8_UN:
1085                 ins->type = STACK_I8;
1086                 ins->opcode += ovf2ops_op_map [src1->type];
1087                 break;
1088         case CEE_CONV_R4:
1089                 ins->type = cfg->r4_stack_type;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_R8:
1093                 ins->type = STACK_R8;
1094                 ins->opcode += unops_op_map [src1->type];
1095                 break;
1096         case OP_CKFINITE:
1097                 ins->type = STACK_R8;
1098                 break;
1099         case CEE_CONV_U2:
1100         case CEE_CONV_U1:
1101                 ins->type = STACK_I4;
1102                 ins->opcode += ovfops_op_map [src1->type];
1103                 break;
1104         case CEE_CONV_I:
1105         case CEE_CONV_OVF_I:
1106         case CEE_CONV_OVF_U:
1107                 ins->type = STACK_PTR;
1108                 ins->opcode += ovfops_op_map [src1->type];
1109                 break;
1110         case CEE_ADD_OVF:
1111         case CEE_ADD_OVF_UN:
1112         case CEE_MUL_OVF:
1113         case CEE_MUL_OVF_UN:
1114         case CEE_SUB_OVF:
1115         case CEE_SUB_OVF_UN:
1116                 ins->type = bin_num_table [src1->type] [src2->type];
1117                 ins->opcode += ovfops_op_map [src1->type];
1118                 if (ins->type == STACK_R8)
1119                         ins->type = STACK_INV;
1120                 break;
1121         case OP_LOAD_MEMBASE:
1122                 ins->type = STACK_PTR;
1123                 break;
1124         case OP_LOADI1_MEMBASE:
1125         case OP_LOADU1_MEMBASE:
1126         case OP_LOADI2_MEMBASE:
1127         case OP_LOADU2_MEMBASE:
1128         case OP_LOADI4_MEMBASE:
1129         case OP_LOADU4_MEMBASE:
1130                 ins->type = STACK_PTR;
1131                 break;
1132         case OP_LOADI8_MEMBASE:
1133                 ins->type = STACK_I8;
1134                 break;
1135         case OP_LOADR4_MEMBASE:
1136                 ins->type = cfg->r4_stack_type;
1137                 break;
1138         case OP_LOADR8_MEMBASE:
1139                 ins->type = STACK_R8;
1140                 break;
1141         default:
1142                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1143                 break;
1144         }
1145
1146         if (ins->type == STACK_MP)
1147                 ins->klass = mono_defaults.object_class;
1148 }
1149
1150 static const char
1151 ldind_type [] = {
1152         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1153 };
1154
1155 #if 0
1156
1157 static const char
1158 param_table [STACK_MAX] [STACK_MAX] = {
1159         {0},
1160 };
1161
1162 static int
1163 check_values_to_signature (MonoInst *args, MonoType *this, MonoMethodSignature *sig) {
1164         int i;
1165
1166         if (sig->hasthis) {
1167                 switch (args->type) {
1168                 case STACK_I4:
1169                 case STACK_I8:
1170                 case STACK_R8:
1171                 case STACK_VTYPE:
1172                 case STACK_INV:
1173                         return 0;
1174                 }
1175                 args++;
1176         }
1177         for (i = 0; i < sig->param_count; ++i) {
1178                 switch (args [i].type) {
1179                 case STACK_INV:
1180                         return 0;
1181                 case STACK_MP:
1182                         if (!sig->params [i]->byref)
1183                                 return 0;
1184                         continue;
1185                 case STACK_OBJ:
1186                         if (sig->params [i]->byref)
1187                                 return 0;
1188                         switch (sig->params [i]->type) {
1189                         case MONO_TYPE_CLASS:
1190                         case MONO_TYPE_STRING:
1191                         case MONO_TYPE_OBJECT:
1192                         case MONO_TYPE_SZARRAY:
1193                         case MONO_TYPE_ARRAY:
1194                                 break;
1195                         default:
1196                                 return 0;
1197                         }
1198                         continue;
1199                 case STACK_R8:
1200                         if (sig->params [i]->byref)
1201                                 return 0;
1202                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1203                                 return 0;
1204                         continue;
1205                 case STACK_PTR:
1206                 case STACK_I4:
1207                 case STACK_I8:
1208                 case STACK_VTYPE:
1209                         break;
1210                 }
1211                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1212                         return 0;*/
1213         }
1214         return 1;
1215 }
1216 #endif
1217
1218 /*
1219  * When we need a pointer to the current domain many times in a method, we
1220  * call mono_domain_get() once and we store the result in a local variable.
1221  * This function returns the variable that represents the MonoDomain*.
1222  */
1223 inline static MonoInst *
1224 mono_get_domainvar (MonoCompile *cfg)
1225 {
1226         if (!cfg->domainvar)
1227                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1228         return cfg->domainvar;
1229 }
1230
1231 /*
1232  * The got_var contains the address of the Global Offset Table when AOT
1233  * compiling.
1234  */
1235 MonoInst *
1236 mono_get_got_var (MonoCompile *cfg)
1237 {
1238 #ifdef MONO_ARCH_NEED_GOT_VAR
1239         if (!cfg->compile_aot)
1240                 return NULL;
1241         if (!cfg->got_var) {
1242                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1243         }
1244         return cfg->got_var;
1245 #else
1246         return NULL;
1247 #endif
1248 }
1249
1250 static MonoInst *
1251 mono_get_vtable_var (MonoCompile *cfg)
1252 {
1253         g_assert (cfg->generic_sharing_context);
1254
1255         if (!cfg->rgctx_var) {
1256                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257                 /* force the var to be stack allocated */
1258                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1259         }
1260
1261         return cfg->rgctx_var;
1262 }
1263
1264 static MonoType*
1265 type_from_stack_type (MonoInst *ins) {
1266         switch (ins->type) {
1267         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1268         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1269         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1270         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1271         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1272         case STACK_MP:
1273                 return &ins->klass->this_arg;
1274         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1275         case STACK_VTYPE: return &ins->klass->byval_arg;
1276         default:
1277                 g_error ("stack type %d to monotype not handled\n", ins->type);
1278         }
1279         return NULL;
1280 }
1281
1282 static G_GNUC_UNUSED int
1283 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1284 {
1285         t = mono_type_get_underlying_type (t);
1286         switch (t->type) {
1287         case MONO_TYPE_I1:
1288         case MONO_TYPE_U1:
1289         case MONO_TYPE_I2:
1290         case MONO_TYPE_U2:
1291         case MONO_TYPE_I4:
1292         case MONO_TYPE_U4:
1293                 return STACK_I4;
1294         case MONO_TYPE_I:
1295         case MONO_TYPE_U:
1296         case MONO_TYPE_PTR:
1297         case MONO_TYPE_FNPTR:
1298                 return STACK_PTR;
1299         case MONO_TYPE_CLASS:
1300         case MONO_TYPE_STRING:
1301         case MONO_TYPE_OBJECT:
1302         case MONO_TYPE_SZARRAY:
1303         case MONO_TYPE_ARRAY:
1304                 return STACK_OBJ;
1305         case MONO_TYPE_I8:
1306         case MONO_TYPE_U8:
1307                 return STACK_I8;
1308         case MONO_TYPE_R4:
1309                 return cfg->r4_stack_type;
1310         case MONO_TYPE_R8:
1311                 return STACK_R8;
1312         case MONO_TYPE_VALUETYPE:
1313         case MONO_TYPE_TYPEDBYREF:
1314                 return STACK_VTYPE;
1315         case MONO_TYPE_GENERICINST:
1316                 if (mono_type_generic_inst_is_valuetype (t))
1317                         return STACK_VTYPE;
1318                 else
1319                         return STACK_OBJ;
1320                 break;
1321         default:
1322                 g_assert_not_reached ();
1323         }
1324
1325         return -1;
1326 }
1327
1328 static MonoClass*
1329 array_access_to_klass (int opcode)
1330 {
1331         switch (opcode) {
1332         case CEE_LDELEM_U1:
1333                 return mono_defaults.byte_class;
1334         case CEE_LDELEM_U2:
1335                 return mono_defaults.uint16_class;
1336         case CEE_LDELEM_I:
1337         case CEE_STELEM_I:
1338                 return mono_defaults.int_class;
1339         case CEE_LDELEM_I1:
1340         case CEE_STELEM_I1:
1341                 return mono_defaults.sbyte_class;
1342         case CEE_LDELEM_I2:
1343         case CEE_STELEM_I2:
1344                 return mono_defaults.int16_class;
1345         case CEE_LDELEM_I4:
1346         case CEE_STELEM_I4:
1347                 return mono_defaults.int32_class;
1348         case CEE_LDELEM_U4:
1349                 return mono_defaults.uint32_class;
1350         case CEE_LDELEM_I8:
1351         case CEE_STELEM_I8:
1352                 return mono_defaults.int64_class;
1353         case CEE_LDELEM_R4:
1354         case CEE_STELEM_R4:
1355                 return mono_defaults.single_class;
1356         case CEE_LDELEM_R8:
1357         case CEE_STELEM_R8:
1358                 return mono_defaults.double_class;
1359         case CEE_LDELEM_REF:
1360         case CEE_STELEM_REF:
1361                 return mono_defaults.object_class;
1362         default:
1363                 g_assert_not_reached ();
1364         }
1365         return NULL;
1366 }
1367
1368 /*
1369  * We try to share variables when possible
1370  */
1371 static MonoInst *
1372 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1373 {
1374         MonoInst *res;
1375         int pos, vnum;
1376
1377         /* inlining can result in deeper stacks */
1378         if (slot >= cfg->header->max_stack)
1379                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1380
1381         pos = ins->type - 1 + slot * STACK_MAX;
1382
1383         switch (ins->type) {
1384         case STACK_I4:
1385         case STACK_I8:
1386         case STACK_R8:
1387         case STACK_PTR:
1388         case STACK_MP:
1389         case STACK_OBJ:
1390                 if ((vnum = cfg->intvars [pos]))
1391                         return cfg->varinfo [vnum];
1392                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1393                 cfg->intvars [pos] = res->inst_c0;
1394                 break;
1395         default:
1396                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1397         }
1398         return res;
1399 }
1400
1401 static void
1402 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1403 {
1404         /*
1405          * Don't use this if a generic_context is set, since that means AOT can't
1406          * look up the method using just the image+token.
1407          * table == 0 means this is a reference made from a wrapper.
1408          */
1409         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1410                 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1411                 jump_info_token->image = image;
1412                 jump_info_token->token = token;
1413                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1414         }
1415 }
1416
1417 /*
1418  * This function is called to handle items that are left on the evaluation stack
1419  * at basic block boundaries. What happens is that we save the values to local variables
1420  * and we reload them later when first entering the target basic block (with the
1421  * handle_loaded_temps () function).
1422  * A single joint point will use the same variables (stored in the array bb->out_stack or
1423  * bb->in_stack, if the basic block is before or after the joint point).
1424  *
1425  * This function needs to be called _before_ emitting the last instruction of
1426  * the bb (i.e. before emitting a branch).
1427  * If the stack merge fails at a join point, cfg->unverifiable is set.
1428  */
1429 static void
1430 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1431 {
1432         int i, bindex;
1433         MonoBasicBlock *bb = cfg->cbb;
1434         MonoBasicBlock *outb;
1435         MonoInst *inst, **locals;
1436         gboolean found;
1437
1438         if (!count)
1439                 return;
1440         if (cfg->verbose_level > 3)
1441                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1442         if (!bb->out_scount) {
1443                 bb->out_scount = count;
1444                 //printf ("bblock %d has out:", bb->block_num);
1445                 found = FALSE;
1446                 for (i = 0; i < bb->out_count; ++i) {
1447                         outb = bb->out_bb [i];
1448                         /* exception handlers are linked, but they should not be considered for stack args */
1449                         if (outb->flags & BB_EXCEPTION_HANDLER)
1450                                 continue;
1451                         //printf (" %d", outb->block_num);
1452                         if (outb->in_stack) {
1453                                 found = TRUE;
1454                                 bb->out_stack = outb->in_stack;
1455                                 break;
1456                         }
1457                 }
1458                 //printf ("\n");
1459                 if (!found) {
1460                         bb->out_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1461                         for (i = 0; i < count; ++i) {
1462                                 /*
1463                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1464                                  * stack slot and if they are of the same type.
1465                                  * This won't cause conflicts since if 'local' is used to
1466                                  * store one of the values in the in_stack of a bblock, then
1467                                  * the same variable will be used for the same outgoing stack
1468                                  * slot as well.
1469                                  * This doesn't work when inlining methods, since the bblocks
1470                                  * in the inlined methods do not inherit their in_stack from
1471                                  * the bblock they are inlined to. See bug #58863 for an
1472                                  * example.
1473                                  */
1474                                 if (cfg->inlined_method)
1475                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1476                                 else
1477                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1478                         }
1479                 }
1480         }
1481
1482         for (i = 0; i < bb->out_count; ++i) {
1483                 outb = bb->out_bb [i];
1484                 /* exception handlers are linked, but they should not be considered for stack args */
1485                 if (outb->flags & BB_EXCEPTION_HANDLER)
1486                         continue;
1487                 if (outb->in_scount) {
1488                         if (outb->in_scount != bb->out_scount) {
1489                                 cfg->unverifiable = TRUE;
1490                                 return;
1491                         }
1492                         continue; /* check they are the same locals */
1493                 }
1494                 outb->in_scount = count;
1495                 outb->in_stack = bb->out_stack;
1496         }
1497
1498         locals = bb->out_stack;
1499         cfg->cbb = bb;
1500         for (i = 0; i < count; ++i) {
1501                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1502                 inst->cil_code = sp [i]->cil_code;
1503                 sp [i] = locals [i];
1504                 if (cfg->verbose_level > 3)
1505                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1506         }
1507
1508         /*
1509          * It is possible that the out bblocks already have in_stack assigned, and
1510          * the in_stacks differ. In this case, we will store to all the different
1511          * in_stacks.
1512          */
1513
1514         found = TRUE;
1515         bindex = 0;
1516         while (found) {
1517                 /* Find a bblock which has a different in_stack */
1518                 found = FALSE;
1519                 while (bindex < bb->out_count) {
1520                         outb = bb->out_bb [bindex];
1521                         /* exception handlers are linked, but they should not be considered for stack args */
1522                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1523                                 bindex++;
1524                                 continue;
1525                         }
1526                         if (outb->in_stack != locals) {
1527                                 for (i = 0; i < count; ++i) {
1528                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1529                                         inst->cil_code = sp [i]->cil_code;
1530                                         sp [i] = locals [i];
1531                                         if (cfg->verbose_level > 3)
1532                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1533                                 }
1534                                 locals = outb->in_stack;
1535                                 found = TRUE;
1536                                 break;
1537                         }
1538                         bindex ++;
1539                 }
1540         }
1541 }
1542
1543 static void
1544 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1545 {
1546         int ibitmap_reg = alloc_preg (cfg);
1547 #ifdef COMPRESSED_INTERFACE_BITMAP
1548         MonoInst *args [2];
1549         MonoInst *res, *ins;
1550         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1551         MONO_ADD_INS (cfg->cbb, ins);
1552         args [0] = ins;
1553         if (cfg->compile_aot)
1554                 EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_IID, klass);
1555         else
1556                 EMIT_NEW_ICONST (cfg, args [1], klass->interface_id);
1557         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1558         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1559 #else
1560         int ibitmap_byte_reg = alloc_preg (cfg);
1561
1562         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1563
1564         if (cfg->compile_aot) {
1565                 int iid_reg = alloc_preg (cfg);
1566                 int shifted_iid_reg = alloc_preg (cfg);
1567                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1568                 int masked_iid_reg = alloc_preg (cfg);
1569                 int iid_one_bit_reg = alloc_preg (cfg);
1570                 int iid_bit_reg = alloc_preg (cfg);
1571                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1572                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1573                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1574                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1575                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1576                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1577                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1578                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1579         } else {
1580                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1581                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1582         }
1583 #endif
1584 }
1585
1586 /*
1587  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1588  * stored in "klass_reg" implements the interface "klass".
1589  */
1590 static void
1591 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1592 {
1593         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1594 }
1595
1596 /*
1597  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1598  * stored in "vtable_reg" implements the interface "klass".
1599  */
1600 static void
1601 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1602 {
1603         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1604 }
1605
1606 /*
1607  * Emit code which checks whenever the interface id of @klass is smaller than
1608  * than the value given by max_iid_reg.
1609 */
1610 static void
1611 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1612                                                  MonoBasicBlock *false_target)
1613 {
1614         if (cfg->compile_aot) {
1615                 int iid_reg = alloc_preg (cfg);
1616                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1617                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1618         }
1619         else
1620                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1621         if (false_target)
1622                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1623         else
1624                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1625 }
1626
1627 /* Same as above, but obtains max_iid from a vtable */
1628 static void
1629 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1630                                                                  MonoBasicBlock *false_target)
1631 {
1632         int max_iid_reg = alloc_preg (cfg);
1633
1634         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1635         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1636 }
1637
1638 /* Same as above, but obtains max_iid from a klass */
1639 static void
1640 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1641                                                                  MonoBasicBlock *false_target)
1642 {
1643         int max_iid_reg = alloc_preg (cfg);
1644
1645         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1646         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1647 }
1648
1649 static void
1650 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1651 {
1652         int idepth_reg = alloc_preg (cfg);
1653         int stypes_reg = alloc_preg (cfg);
1654         int stype = alloc_preg (cfg);
1655
1656         mono_class_setup_supertypes (klass);
1657
1658         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1659                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1660                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1661                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1662         }
1663         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1664         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1665         if (klass_ins) {
1666                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1667         } else if (cfg->compile_aot) {
1668                 int const_reg = alloc_preg (cfg);
1669                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1670                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1671         } else {
1672                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1673         }
1674         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1675 }
1676
1677 static void
1678 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1679 {
1680         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1681 }
1682
1683 static void
1684 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1685 {
1686         int intf_reg = alloc_preg (cfg);
1687
1688         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1689         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1690         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1691         if (true_target)
1692                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1693         else
1694                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1695 }
1696
1697 /*
1698  * Variant of the above that takes a register to the class, not the vtable.
1699  */
1700 static void
1701 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1702 {
1703         int intf_bit_reg = alloc_preg (cfg);
1704
1705         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1706         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1707         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1708         if (true_target)
1709                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1710         else
1711                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1712 }
1713
1714 static inline void
1715 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1716 {
1717         if (klass_inst) {
1718                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1719         } else if (cfg->compile_aot) {
1720                 int const_reg = alloc_preg (cfg);
1721                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1722                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1723         } else {
1724                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1725         }
1726         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1727 }
1728
1729 static inline void
1730 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1731 {
1732         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1733 }
1734
1735 static inline void
1736 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1737 {
1738         if (cfg->compile_aot) {
1739                 int const_reg = alloc_preg (cfg);
1740                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1741                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1742         } else {
1743                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1744         }
1745         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1746 }
1747
1748 static void
1749 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1750
1751 static void
1752 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1753 {
1754         if (klass->rank) {
1755                 int rank_reg = alloc_preg (cfg);
1756                 int eclass_reg = alloc_preg (cfg);
1757
1758                 g_assert (!klass_inst);
1759                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1760                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1761                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1762                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1763                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1764                 if (klass->cast_class == mono_defaults.object_class) {
1765                         int parent_reg = alloc_preg (cfg);
1766                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1767                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1768                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1769                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1770                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1771                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1772                 } else if (klass->cast_class == mono_defaults.enum_class) {
1773                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1774                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1775                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1776                 } else {
1777                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1778                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1779                 }
1780
1781                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1782                         /* Check that the object is a vector too */
1783                         int bounds_reg = alloc_preg (cfg);
1784                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1785                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1786                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1787                 }
1788         } else {
1789                 int idepth_reg = alloc_preg (cfg);
1790                 int stypes_reg = alloc_preg (cfg);
1791                 int stype = alloc_preg (cfg);
1792
1793                 mono_class_setup_supertypes (klass);
1794
1795                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1796                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1797                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1798                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1799                 }
1800                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1801                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1802                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1803         }
1804 }
1805
1806 static void
1807 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1808 {
1809         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1810 }
1811
1812 static void
1813 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1814 {
1815         int val_reg;
1816
1817         g_assert (val == 0);
1818
1819         if (align == 0)
1820                 align = 4;
1821
1822         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1823                 switch (size) {
1824                 case 1:
1825                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1826                         return;
1827                 case 2:
1828                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1829                         return;
1830                 case 4:
1831                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1832                         return;
1833 #if SIZEOF_REGISTER == 8
1834                 case 8:
1835                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1836                         return;
1837 #endif
1838                 }
1839         }
1840
1841         val_reg = alloc_preg (cfg);
1842
1843         if (SIZEOF_REGISTER == 8)
1844                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1845         else
1846                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1847
1848         if (align < 4) {
1849                 /* This could be optimized further if neccesary */
1850                 while (size >= 1) {
1851                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1852                         offset += 1;
1853                         size -= 1;
1854                 }
1855                 return;
1856         }
1857
1858 #if !NO_UNALIGNED_ACCESS
1859         if (SIZEOF_REGISTER == 8) {
1860                 if (offset % 8) {
1861                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1862                         offset += 4;
1863                         size -= 4;
1864                 }
1865                 while (size >= 8) {
1866                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1867                         offset += 8;
1868                         size -= 8;
1869                 }
1870         }
1871 #endif
1872
1873         while (size >= 4) {
1874                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1875                 offset += 4;
1876                 size -= 4;
1877         }
1878         while (size >= 2) {
1879                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1880                 offset += 2;
1881                 size -= 2;
1882         }
1883         while (size >= 1) {
1884                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1885                 offset += 1;
1886                 size -= 1;
1887         }
1888 }
1889
1890 void
1891 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1892 {
1893         int cur_reg;
1894
1895         if (align == 0)
1896                 align = 4;
1897
1898         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1899         g_assert (size < 10000);
1900
1901         if (align < 4) {
1902                 /* This could be optimized further if neccesary */
1903                 while (size >= 1) {
1904                         cur_reg = alloc_preg (cfg);
1905                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1906                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1907                         doffset += 1;
1908                         soffset += 1;
1909                         size -= 1;
1910                 }
1911         }
1912
1913 #if !NO_UNALIGNED_ACCESS
1914         if (SIZEOF_REGISTER == 8) {
1915                 while (size >= 8) {
1916                         cur_reg = alloc_preg (cfg);
1917                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1918                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1919                         doffset += 8;
1920                         soffset += 8;
1921                         size -= 8;
1922                 }
1923         }
1924 #endif
1925
1926         while (size >= 4) {
1927                 cur_reg = alloc_preg (cfg);
1928                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1929                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1930                 doffset += 4;
1931                 soffset += 4;
1932                 size -= 4;
1933         }
1934         while (size >= 2) {
1935                 cur_reg = alloc_preg (cfg);
1936                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1937                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1938                 doffset += 2;
1939                 soffset += 2;
1940                 size -= 2;
1941         }
1942         while (size >= 1) {
1943                 cur_reg = alloc_preg (cfg);
1944                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1945                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1946                 doffset += 1;
1947                 soffset += 1;
1948                 size -= 1;
1949         }
1950 }
1951
1952 static void
1953 emit_tls_set (MonoCompile *cfg, int sreg1, int tls_key)
1954 {
1955         MonoInst *ins, *c;
1956
1957         if (cfg->compile_aot) {
1958                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1959                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1960                 ins->sreg1 = sreg1;
1961                 ins->sreg2 = c->dreg;
1962                 MONO_ADD_INS (cfg->cbb, ins);
1963         } else {
1964                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1965                 ins->sreg1 = sreg1;
1966                 ins->inst_offset = mini_get_tls_offset (tls_key);
1967                 MONO_ADD_INS (cfg->cbb, ins);
1968         }
1969 }
1970
1971 /*
1972  * emit_push_lmf:
1973  *
1974  *   Emit IR to push the current LMF onto the LMF stack.
1975  */
1976 static void
1977 emit_push_lmf (MonoCompile *cfg)
1978 {
1979         /*
1980          * Emit IR to push the LMF:
1981          * lmf_addr = <lmf_addr from tls>
1982          * lmf->lmf_addr = lmf_addr
1983          * lmf->prev_lmf = *lmf_addr
1984          * *lmf_addr = lmf
1985          */
1986         int lmf_reg, prev_lmf_reg;
1987         MonoInst *ins, *lmf_ins;
1988
1989         if (!cfg->lmf_ir)
1990                 return;
1991
1992         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
1993                 /* Load current lmf */
1994                 lmf_ins = mono_get_lmf_intrinsic (cfg);
1995                 g_assert (lmf_ins);
1996                 MONO_ADD_INS (cfg->cbb, lmf_ins);
1997                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1998                 lmf_reg = ins->dreg;
1999                 /* Save previous_lmf */
2000                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2001                 /* Set new LMF */
2002                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2003         } else {
2004                 /*
2005                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2006                  */
2007                 if (!cfg->lmf_addr_var)
2008                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2009
2010 #ifdef HOST_WIN32
2011                 ins = mono_get_jit_tls_intrinsic (cfg);
2012                 if (ins) {
2013                         int jit_tls_dreg = ins->dreg;
2014
2015                         MONO_ADD_INS (cfg->cbb, ins);
2016                         lmf_reg = alloc_preg (cfg);
2017                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2018                 } else {
2019                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2020                 }
2021 #else
2022                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2023                 if (lmf_ins) {
2024                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2025                 } else {
2026 #ifdef TARGET_IOS
2027                         MonoInst *args [16], *jit_tls_ins, *ins;
2028
2029                         /* Inline mono_get_lmf_addr () */
2030                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2031
2032                         /* Load mono_jit_tls_id */
2033                         EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2034                         /* call pthread_getspecific () */
2035                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2036                         /* lmf_addr = &jit_tls->lmf */
2037                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2038                         lmf_ins = ins;
2039 #else
2040                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2041 #endif
2042                 }
2043 #endif
2044                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2045
2046                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2047                 lmf_reg = ins->dreg;
2048
2049                 prev_lmf_reg = alloc_preg (cfg);
2050                 /* Save previous_lmf */
2051                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2052                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2053                 /* Set new lmf */
2054                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2055         }
2056 }
2057
2058 /*
2059  * emit_pop_lmf:
2060  *
2061  *   Emit IR to pop the current LMF from the LMF stack.
2062  */
2063 static void
2064 emit_pop_lmf (MonoCompile *cfg)
2065 {
2066         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2067         MonoInst *ins;
2068
2069         if (!cfg->lmf_ir)
2070                 return;
2071
2072         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2073         lmf_reg = ins->dreg;
2074
2075         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2076                 /* Load previous_lmf */
2077                 prev_lmf_reg = alloc_preg (cfg);
2078                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2079                 /* Set new LMF */
2080                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2081         } else {
2082                 /*
2083                  * Emit IR to pop the LMF:
2084                  * *(lmf->lmf_addr) = lmf->prev_lmf
2085                  */
2086                 /* This could be called before emit_push_lmf () */
2087                 if (!cfg->lmf_addr_var)
2088                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2089                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2090
2091                 prev_lmf_reg = alloc_preg (cfg);
2092                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2093                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2094         }
2095 }
2096
2097 static void
2098 emit_instrumentation_call (MonoCompile *cfg, void *func)
2099 {
2100         MonoInst *iargs [1];
2101
2102         /*
2103          * Avoid instrumenting inlined methods since it can
2104          * distort profiling results.
2105          */
2106         if (cfg->method != cfg->current_method)
2107                 return;
2108
2109         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2110                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2111                 mono_emit_jit_icall (cfg, func, iargs);
2112         }
2113 }
2114
2115 static int
2116 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
2117 {
2118 handle_enum:
2119         type = mini_get_underlying_type (cfg, type);
2120         switch (type->type) {
2121         case MONO_TYPE_VOID:
2122                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2123         case MONO_TYPE_I1:
2124         case MONO_TYPE_U1:
2125         case MONO_TYPE_I2:
2126         case MONO_TYPE_U2:
2127         case MONO_TYPE_I4:
2128         case MONO_TYPE_U4:
2129                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2130         case MONO_TYPE_I:
2131         case MONO_TYPE_U:
2132         case MONO_TYPE_PTR:
2133         case MONO_TYPE_FNPTR:
2134                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2135         case MONO_TYPE_CLASS:
2136         case MONO_TYPE_STRING:
2137         case MONO_TYPE_OBJECT:
2138         case MONO_TYPE_SZARRAY:
2139         case MONO_TYPE_ARRAY:
2140                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2141         case MONO_TYPE_I8:
2142         case MONO_TYPE_U8:
2143                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2144         case MONO_TYPE_R4:
2145                 if (cfg->r4fp)
2146                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2147                 else
2148                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2149         case MONO_TYPE_R8:
2150                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2151         case MONO_TYPE_VALUETYPE:
2152                 if (type->data.klass->enumtype) {
2153                         type = mono_class_enum_basetype (type->data.klass);
2154                         goto handle_enum;
2155                 } else
2156                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2157         case MONO_TYPE_TYPEDBYREF:
2158                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2159         case MONO_TYPE_GENERICINST:
2160                 type = &type->data.generic_class->container_class->byval_arg;
2161                 goto handle_enum;
2162         case MONO_TYPE_VAR:
2163         case MONO_TYPE_MVAR:
2164                 /* gsharedvt */
2165                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2166         default:
2167                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2168         }
2169         return -1;
2170 }
2171
2172 /*
2173  * target_type_is_incompatible:
2174  * @cfg: MonoCompile context
2175  *
2176  * Check that the item @arg on the evaluation stack can be stored
2177  * in the target type (can be a local, or field, etc).
2178  * The cfg arg can be used to check if we need verification or just
2179  * validity checks.
2180  *
2181  * Returns: non-0 value if arg can't be stored on a target.
2182  */
2183 static int
2184 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2185 {
2186         MonoType *simple_type;
2187         MonoClass *klass;
2188
2189         if (target->byref) {
2190                 /* FIXME: check that the pointed to types match */
2191                 if (arg->type == STACK_MP)
2192                         return arg->klass != mono_class_from_mono_type (target);
2193                 if (arg->type == STACK_PTR)
2194                         return 0;
2195                 return 1;
2196         }
2197
2198         simple_type = mini_get_underlying_type (cfg, target);
2199         switch (simple_type->type) {
2200         case MONO_TYPE_VOID:
2201                 return 1;
2202         case MONO_TYPE_I1:
2203         case MONO_TYPE_U1:
2204         case MONO_TYPE_I2:
2205         case MONO_TYPE_U2:
2206         case MONO_TYPE_I4:
2207         case MONO_TYPE_U4:
2208                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2209                         return 1;
2210                 return 0;
2211         case MONO_TYPE_PTR:
2212                 /* STACK_MP is needed when setting pinned locals */
2213                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2214                         return 1;
2215                 return 0;
2216         case MONO_TYPE_I:
2217         case MONO_TYPE_U:
2218         case MONO_TYPE_FNPTR:
2219                 /*
2220                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2221                  * in native int. (#688008).
2222                  */
2223                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2224                         return 1;
2225                 return 0;
2226         case MONO_TYPE_CLASS:
2227         case MONO_TYPE_STRING:
2228         case MONO_TYPE_OBJECT:
2229         case MONO_TYPE_SZARRAY:
2230         case MONO_TYPE_ARRAY:
2231                 if (arg->type != STACK_OBJ)
2232                         return 1;
2233                 /* FIXME: check type compatibility */
2234                 return 0;
2235         case MONO_TYPE_I8:
2236         case MONO_TYPE_U8:
2237                 if (arg->type != STACK_I8)
2238                         return 1;
2239                 return 0;
2240         case MONO_TYPE_R4:
2241                 if (arg->type != cfg->r4_stack_type)
2242                         return 1;
2243                 return 0;
2244         case MONO_TYPE_R8:
2245                 if (arg->type != STACK_R8)
2246                         return 1;
2247                 return 0;
2248         case MONO_TYPE_VALUETYPE:
2249                 if (arg->type != STACK_VTYPE)
2250                         return 1;
2251                 klass = mono_class_from_mono_type (simple_type);
2252                 if (klass != arg->klass)
2253                         return 1;
2254                 return 0;
2255         case MONO_TYPE_TYPEDBYREF:
2256                 if (arg->type != STACK_VTYPE)
2257                         return 1;
2258                 klass = mono_class_from_mono_type (simple_type);
2259                 if (klass != arg->klass)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_GENERICINST:
2263                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2264                         if (arg->type != STACK_VTYPE)
2265                                 return 1;
2266                         klass = mono_class_from_mono_type (simple_type);
2267                         /* The second cases is needed when doing partial sharing */
2268                         if (klass != arg->klass && mono_class_from_mono_type (target) != arg->klass)
2269                                 return 1;
2270                         return 0;
2271                 } else {
2272                         if (arg->type != STACK_OBJ)
2273                                 return 1;
2274                         /* FIXME: check type compatibility */
2275                         return 0;
2276                 }
2277         case MONO_TYPE_VAR:
2278         case MONO_TYPE_MVAR:
2279                 g_assert (cfg->generic_sharing_context);
2280                 if (mini_type_var_is_vt (cfg, simple_type)) {
2281                         if (arg->type != STACK_VTYPE)
2282                                 return 1;
2283                 } else {
2284                         if (arg->type != STACK_OBJ)
2285                                 return 1;
2286                 }
2287                 return 0;
2288         default:
2289                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2290         }
2291         return 1;
2292 }
2293
2294 /*
2295  * Prepare arguments for passing to a function call.
2296  * Return a non-zero value if the arguments can't be passed to the given
2297  * signature.
2298  * The type checks are not yet complete and some conversions may need
2299  * casts on 32 or 64 bit architectures.
2300  *
2301  * FIXME: implement this using target_type_is_incompatible ()
2302  */
2303 static int
2304 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2305 {
2306         MonoType *simple_type;
2307         int i;
2308
2309         if (sig->hasthis) {
2310                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2311                         return 1;
2312                 args++;
2313         }
2314         for (i = 0; i < sig->param_count; ++i) {
2315                 if (sig->params [i]->byref) {
2316                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2317                                 return 1;
2318                         continue;
2319                 }
2320                 simple_type = mini_get_underlying_type (cfg, sig->params [i]);
2321 handle_enum:
2322                 switch (simple_type->type) {
2323                 case MONO_TYPE_VOID:
2324                         return 1;
2325                         continue;
2326                 case MONO_TYPE_I1:
2327                 case MONO_TYPE_U1:
2328                 case MONO_TYPE_I2:
2329                 case MONO_TYPE_U2:
2330                 case MONO_TYPE_I4:
2331                 case MONO_TYPE_U4:
2332                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2333                                 return 1;
2334                         continue;
2335                 case MONO_TYPE_I:
2336                 case MONO_TYPE_U:
2337                 case MONO_TYPE_PTR:
2338                 case MONO_TYPE_FNPTR:
2339                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2340                                 return 1;
2341                         continue;
2342                 case MONO_TYPE_CLASS:
2343                 case MONO_TYPE_STRING:
2344                 case MONO_TYPE_OBJECT:
2345                 case MONO_TYPE_SZARRAY:
2346                 case MONO_TYPE_ARRAY:
2347                         if (args [i]->type != STACK_OBJ)
2348                                 return 1;
2349                         continue;
2350                 case MONO_TYPE_I8:
2351                 case MONO_TYPE_U8:
2352                         if (args [i]->type != STACK_I8)
2353                                 return 1;
2354                         continue;
2355                 case MONO_TYPE_R4:
2356                         if (args [i]->type != cfg->r4_stack_type)
2357                                 return 1;
2358                         continue;
2359                 case MONO_TYPE_R8:
2360                         if (args [i]->type != STACK_R8)
2361                                 return 1;
2362                         continue;
2363                 case MONO_TYPE_VALUETYPE:
2364                         if (simple_type->data.klass->enumtype) {
2365                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2366                                 goto handle_enum;
2367                         }
2368                         if (args [i]->type != STACK_VTYPE)
2369                                 return 1;
2370                         continue;
2371                 case MONO_TYPE_TYPEDBYREF:
2372                         if (args [i]->type != STACK_VTYPE)
2373                                 return 1;
2374                         continue;
2375                 case MONO_TYPE_GENERICINST:
2376                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2377                         goto handle_enum;
2378                 case MONO_TYPE_VAR:
2379                 case MONO_TYPE_MVAR:
2380                         /* gsharedvt */
2381                         if (args [i]->type != STACK_VTYPE)
2382                                 return 1;
2383                         continue;
2384                 default:
2385                         g_error ("unknown type 0x%02x in check_call_signature",
2386                                  simple_type->type);
2387                 }
2388         }
2389         return 0;
2390 }
2391
2392 static int
2393 callvirt_to_call (int opcode)
2394 {
2395         switch (opcode) {
2396         case OP_CALL_MEMBASE:
2397                 return OP_CALL;
2398         case OP_VOIDCALL_MEMBASE:
2399                 return OP_VOIDCALL;
2400         case OP_FCALL_MEMBASE:
2401                 return OP_FCALL;
2402         case OP_RCALL_MEMBASE:
2403                 return OP_RCALL;
2404         case OP_VCALL_MEMBASE:
2405                 return OP_VCALL;
2406         case OP_LCALL_MEMBASE:
2407                 return OP_LCALL;
2408         default:
2409                 g_assert_not_reached ();
2410         }
2411
2412         return -1;
2413 }
2414
2415 /* Either METHOD or IMT_ARG needs to be set */
2416 static void
2417 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2418 {
2419         int method_reg;
2420
2421         if (COMPILE_LLVM (cfg)) {
2422                 method_reg = alloc_preg (cfg);
2423
2424                 if (imt_arg) {
2425                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2426                 } else if (cfg->compile_aot) {
2427                         MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2428                 } else {
2429                         MonoInst *ins;
2430                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2431                         ins->inst_p0 = method;
2432                         ins->dreg = method_reg;
2433                         MONO_ADD_INS (cfg->cbb, ins);
2434                 }
2435
2436 #ifdef ENABLE_LLVM
2437                 call->imt_arg_reg = method_reg;
2438 #endif
2439         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2440                 return;
2441         }
2442
2443         method_reg = alloc_preg (cfg);
2444
2445         if (imt_arg) {
2446                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2447         } else if (cfg->compile_aot) {
2448                 MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2449         } else {
2450                 MonoInst *ins;
2451                 MONO_INST_NEW (cfg, ins, OP_PCONST);
2452                 ins->inst_p0 = method;
2453                 ins->dreg = method_reg;
2454                 MONO_ADD_INS (cfg->cbb, ins);
2455         }
2456
2457         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2458 }
2459
2460 static MonoJumpInfo *
2461 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2462 {
2463         MonoJumpInfo *ji = mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2464
2465         ji->ip.i = ip;
2466         ji->type = type;
2467         ji->data.target = target;
2468
2469         return ji;
2470 }
2471
2472 static int
2473 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2474 {
2475         if (cfg->generic_sharing_context)
2476                 return mono_class_check_context_used (klass);
2477         else
2478                 return 0;
2479 }
2480
2481 static int
2482 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2483 {
2484         if (cfg->generic_sharing_context)
2485                 return mono_method_check_context_used (method);
2486         else
2487                 return 0;
2488 }
2489
2490 /*
2491  * check_method_sharing:
2492  *
2493  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2494  */
2495 static void
2496 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2497 {
2498         gboolean pass_vtable = FALSE;
2499         gboolean pass_mrgctx = FALSE;
2500
2501         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2502                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2503                 gboolean sharable = FALSE;
2504
2505                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2506                         sharable = TRUE;
2507                 } else {
2508                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2509                         MonoGenericContext *context = mini_class_get_context (cmethod->klass);
2510                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2511
2512                         sharable = sharing_enabled && context_sharable;
2513                 }
2514
2515                 /*
2516                  * Pass vtable iff target method might
2517                  * be shared, which means that sharing
2518                  * is enabled for its class and its
2519                  * context is sharable (and it's not a
2520                  * generic method).
2521                  */
2522                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2523                         pass_vtable = TRUE;
2524         }
2525
2526         if (mini_method_get_context (cmethod) &&
2527                 mini_method_get_context (cmethod)->method_inst) {
2528                 g_assert (!pass_vtable);
2529
2530                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2531                         pass_mrgctx = TRUE;
2532                 } else {
2533                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2534                         MonoGenericContext *context = mini_method_get_context (cmethod);
2535                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2536
2537                         if (sharing_enabled && context_sharable)
2538                                 pass_mrgctx = TRUE;
2539                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, mono_method_signature (cmethod)))
2540                                 pass_mrgctx = TRUE;
2541                 }
2542         }
2543
2544         if (out_pass_vtable)
2545                 *out_pass_vtable = pass_vtable;
2546         if (out_pass_mrgctx)
2547                 *out_pass_mrgctx = pass_mrgctx;
2548 }
2549
2550 inline static MonoCallInst *
2551 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2552                                          MonoInst **args, int calli, int virtual, int tail, int rgctx, int unbox_trampoline)
2553 {
2554         MonoType *sig_ret;
2555         MonoCallInst *call;
2556 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2557         int i;
2558 #endif
2559
2560         if (tail) {
2561                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2562
2563                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2564         } else
2565                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual, cfg->generic_sharing_context));
2566
2567         call->args = args;
2568         call->signature = sig;
2569         call->rgctx_reg = rgctx;
2570         sig_ret = mini_get_underlying_type (cfg, sig->ret);
2571
2572         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2573
2574         if (tail) {
2575                 if (mini_type_is_vtype (cfg, sig_ret)) {
2576                         call->vret_var = cfg->vret_addr;
2577                         //g_assert_not_reached ();
2578                 }
2579         } else if (mini_type_is_vtype (cfg, sig_ret)) {
2580                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2581                 MonoInst *loada;
2582
2583                 temp->backend.is_pinvoke = sig->pinvoke;
2584
2585                 /*
2586                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2587                  * address of return value to increase optimization opportunities.
2588                  * Before vtype decomposition, the dreg of the call ins itself represents the
2589                  * fact the call modifies the return value. After decomposition, the call will
2590                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2591                  * will be transformed into an LDADDR.
2592                  */
2593                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2594                 loada->dreg = alloc_preg (cfg);
2595                 loada->inst_p0 = temp;
2596                 /* We reference the call too since call->dreg could change during optimization */
2597                 loada->inst_p1 = call;
2598                 MONO_ADD_INS (cfg->cbb, loada);
2599
2600                 call->inst.dreg = temp->dreg;
2601
2602                 call->vret_var = loada;
2603         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2604                 call->inst.dreg = alloc_dreg (cfg, call->inst.type);
2605
2606 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2607         if (COMPILE_SOFT_FLOAT (cfg)) {
2608                 /*
2609                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2610                  * an icall, but that cannot be done during the call sequence since it would clobber
2611                  * the call registers + the stack. So we do it before emitting the call.
2612                  */
2613                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2614                         MonoType *t;
2615                         MonoInst *in = call->args [i];
2616
2617                         if (i >= sig->hasthis)
2618                                 t = sig->params [i - sig->hasthis];
2619                         else
2620                                 t = &mono_defaults.int_class->byval_arg;
2621                         t = mono_type_get_underlying_type (t);
2622
2623                         if (!t->byref && t->type == MONO_TYPE_R4) {
2624                                 MonoInst *iargs [1];
2625                                 MonoInst *conv;
2626
2627                                 iargs [0] = in;
2628                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2629
2630                                 /* The result will be in an int vreg */
2631                                 call->args [i] = conv;
2632                         }
2633                 }
2634         }
2635 #endif
2636
2637         call->need_unbox_trampoline = unbox_trampoline;
2638
2639 #ifdef ENABLE_LLVM
2640         if (COMPILE_LLVM (cfg))
2641                 mono_llvm_emit_call (cfg, call);
2642         else
2643                 mono_arch_emit_call (cfg, call);
2644 #else
2645         mono_arch_emit_call (cfg, call);
2646 #endif
2647
2648         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2649         cfg->flags |= MONO_CFG_HAS_CALLS;
2650
2651         return call;
2652 }
2653
2654 static void
2655 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2656 {
2657 #ifdef MONO_ARCH_RGCTX_REG
2658         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2659         cfg->uses_rgctx_reg = TRUE;
2660         call->rgctx_reg = TRUE;
2661 #ifdef ENABLE_LLVM
2662         call->rgctx_arg_reg = rgctx_reg;
2663 #endif
2664 #else
2665         NOT_IMPLEMENTED;
2666 #endif
2667 }
2668
2669 inline static MonoInst*
2670 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2671 {
2672         MonoCallInst *call;
2673         MonoInst *ins;
2674         int rgctx_reg = -1;
2675         gboolean check_sp = FALSE;
2676
2677         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2678                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2679
2680                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2681                         check_sp = TRUE;
2682         }
2683
2684         if (rgctx_arg) {
2685                 rgctx_reg = mono_alloc_preg (cfg);
2686                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2687         }
2688
2689         if (check_sp) {
2690                 if (!cfg->stack_inbalance_var)
2691                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2692
2693                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2694                 ins->dreg = cfg->stack_inbalance_var->dreg;
2695                 MONO_ADD_INS (cfg->cbb, ins);
2696         }
2697
2698         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2699
2700         call->inst.sreg1 = addr->dreg;
2701
2702         if (imt_arg)
2703                 emit_imt_argument (cfg, call, NULL, imt_arg);
2704
2705         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2706
2707         if (check_sp) {
2708                 int sp_reg;
2709
2710                 sp_reg = mono_alloc_preg (cfg);
2711
2712                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2713                 ins->dreg = sp_reg;
2714                 MONO_ADD_INS (cfg->cbb, ins);
2715
2716                 /* Restore the stack so we don't crash when throwing the exception */
2717                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2718                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2719                 MONO_ADD_INS (cfg->cbb, ins);
2720
2721                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2722                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2723         }
2724
2725         if (rgctx_arg)
2726                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2727
2728         return (MonoInst*)call;
2729 }
2730
2731 static MonoInst*
2732 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2733
2734 static MonoInst*
2735 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2736 static MonoInst*
2737 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2738
2739 static MonoInst*
2740 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2741                                                         MonoInst **args, MonoInst *this, MonoInst *imt_arg, MonoInst *rgctx_arg)
2742 {
2743 #ifndef DISABLE_REMOTING
2744         gboolean might_be_remote = FALSE;
2745 #endif
2746         gboolean virtual = this != NULL;
2747         gboolean enable_for_aot = TRUE;
2748         int context_used;
2749         MonoCallInst *call;
2750         int rgctx_reg = 0;
2751         gboolean need_unbox_trampoline;
2752
2753         if (!sig)
2754                 sig = mono_method_signature (method);
2755
2756         if (rgctx_arg) {
2757                 rgctx_reg = mono_alloc_preg (cfg);
2758                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2759         }
2760
2761         if (method->string_ctor) {
2762                 /* Create the real signature */
2763                 /* FIXME: Cache these */
2764                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2765                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2766
2767                 sig = ctor_sig;
2768         }
2769
2770         context_used = mini_method_check_context_used (cfg, method);
2771
2772 #ifndef DISABLE_REMOTING
2773         might_be_remote = this && sig->hasthis &&
2774                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2775                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this) || context_used);
2776
2777         if (might_be_remote && context_used) {
2778                 MonoInst *addr;
2779
2780                 g_assert (cfg->generic_sharing_context);
2781
2782                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2783
2784                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2785         }
2786 #endif
2787
2788         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2789
2790         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2791
2792 #ifndef DISABLE_REMOTING
2793         if (might_be_remote)
2794                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2795         else
2796 #endif
2797                 call->method = method;
2798         call->inst.flags |= MONO_INST_HAS_METHOD;
2799         call->inst.inst_left = this;
2800         call->tail_call = tail;
2801
2802         if (virtual) {
2803                 int vtable_reg, slot_reg, this_reg;
2804                 int offset;
2805
2806                 this_reg = this->dreg;
2807
2808                 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2809                         MonoInst *dummy_use;
2810
2811                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2812
2813                         /* Make a call to delegate->invoke_impl */
2814                         call->inst.inst_basereg = this_reg;
2815                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2816                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2817
2818                         /* We must emit a dummy use here because the delegate trampoline will
2819                         replace the 'this' argument with the delegate target making this activation
2820                         no longer a root for the delegate.
2821                         This is an issue for delegates that target collectible code such as dynamic
2822                         methods of GC'able assemblies.
2823
2824                         For a test case look into #667921.
2825
2826                         FIXME: a dummy use is not the best way to do it as the local register allocator
2827                         will put it on a caller save register and spil it around the call.
2828                         Ideally, we would either put it on a callee save register or only do the store part.
2829                          */
2830                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2831
2832                         return (MonoInst*)call;
2833                 }
2834
2835                 if ((!cfg->compile_aot || enable_for_aot) &&
2836                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2837                          (MONO_METHOD_IS_FINAL (method) &&
2838                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2839                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2840                         /*
2841                          * the method is not virtual, we just need to ensure this is not null
2842                          * and then we can call the method directly.
2843                          */
2844 #ifndef DISABLE_REMOTING
2845                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2846                                 /*
2847                                  * The check above ensures method is not gshared, this is needed since
2848                                  * gshared methods can't have wrappers.
2849                                  */
2850                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2851                         }
2852 #endif
2853
2854                         if (!method->string_ctor)
2855                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2856
2857                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2858                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2859                         /*
2860                          * the method is virtual, but we can statically dispatch since either
2861                          * it's class or the method itself are sealed.
2862                          * But first we need to ensure it's not a null reference.
2863                          */
2864                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2865
2866                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2867                 } else {
2868                         vtable_reg = alloc_preg (cfg);
2869                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2870                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2871                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2872                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2873                                 slot_reg = vtable_reg;
2874                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2875                         } else {
2876                                 slot_reg = vtable_reg;
2877                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2878                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2879                                 if (imt_arg) {
2880                                         g_assert (mono_method_signature (method)->generic_param_count);
2881                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2882                                 }
2883                         }
2884
2885                         call->inst.sreg1 = slot_reg;
2886                         call->inst.inst_offset = offset;
2887                         call->virtual = TRUE;
2888                 }
2889         }
2890
2891         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2892
2893         if (rgctx_arg)
2894                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2895
2896         return (MonoInst*)call;
2897 }
2898
2899 MonoInst*
2900 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this)
2901 {
2902         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this, NULL, NULL);
2903 }
2904
2905 MonoInst*
2906 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2907                                            MonoInst **args)
2908 {
2909         MonoCallInst *call;
2910
2911         g_assert (sig);
2912
2913         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2914         call->fptr = func;
2915
2916         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2917
2918         return (MonoInst*)call;
2919 }
2920
2921 MonoInst*
2922 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2923 {
2924         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2925
2926         g_assert (info);
2927
2928         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2929 }
2930
2931 /*
2932  * mono_emit_abs_call:
2933  *
2934  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2935  */
2936 inline static MonoInst*
2937 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2938                                         MonoMethodSignature *sig, MonoInst **args)
2939 {
2940         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2941         MonoInst *ins;
2942
2943         /*
2944          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2945          * handle it.
2946          */
2947         if (cfg->abs_patches == NULL)
2948                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2949         g_hash_table_insert (cfg->abs_patches, ji, ji);
2950         ins = mono_emit_native_call (cfg, ji, sig, args);
2951         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2952         return ins;
2953 }
2954
2955 static gboolean
2956 direct_icalls_enabled (MonoCompile *cfg)
2957 {
2958         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2959 #ifdef TARGET_AMD64
2960         if (cfg->compile_llvm)
2961                 return FALSE;
2962 #endif
2963         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2964                 return FALSE;
2965         return TRUE;
2966 }
2967
2968 MonoInst*
2969 mono_emit_jit_icall_by_info (MonoCompile *cfg, MonoJitICallInfo *info, MonoInst **args, MonoBasicBlock **out_cbb)
2970 {
2971         /*
2972          * Call the jit icall without a wrapper if possible.
2973          * The wrapper is needed for the following reasons:
2974          * - to handle exceptions thrown using mono_raise_exceptions () from the
2975          *   icall function. The EH code needs the lmf frame pushed by the
2976          *   wrapper to be able to unwind back to managed code.
2977          * - to be able to do stack walks for asynchronously suspended
2978          *   threads when debugging.
2979          */
2980         if (info->no_raise && direct_icalls_enabled (cfg)) {
2981                 char *name;
2982                 int costs;
2983
2984                 if (!info->wrapper_method) {
2985                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2986                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2987                         g_free (name);
2988                         mono_memory_barrier ();
2989                 }
2990
2991                 /*
2992                  * Inline the wrapper method, which is basically a call to the C icall, and
2993                  * an exception check.
2994                  */
2995                 costs = inline_method (cfg, info->wrapper_method, NULL,
2996                                                            args, NULL, cfg->real_offset, TRUE, out_cbb);
2997                 g_assert (costs > 0);
2998                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2999
3000                 return args [0];
3001         } else {
3002                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3003         }
3004 }
3005
3006 static MonoInst*
3007 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3008 {
3009         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3010                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3011                         int widen_op = -1;
3012
3013                         /*
3014                          * Native code might return non register sized integers
3015                          * without initializing the upper bits.
3016                          */
3017                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3018                         case OP_LOADI1_MEMBASE:
3019                                 widen_op = OP_ICONV_TO_I1;
3020                                 break;
3021                         case OP_LOADU1_MEMBASE:
3022                                 widen_op = OP_ICONV_TO_U1;
3023                                 break;
3024                         case OP_LOADI2_MEMBASE:
3025                                 widen_op = OP_ICONV_TO_I2;
3026                                 break;
3027                         case OP_LOADU2_MEMBASE:
3028                                 widen_op = OP_ICONV_TO_U2;
3029                                 break;
3030                         default:
3031                                 break;
3032                         }
3033
3034                         if (widen_op != -1) {
3035                                 int dreg = alloc_preg (cfg);
3036                                 MonoInst *widen;
3037
3038                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3039                                 widen->type = ins->type;
3040                                 ins = widen;
3041                         }
3042                 }
3043         }
3044
3045         return ins;
3046 }
3047
3048 static MonoMethod*
3049 get_memcpy_method (void)
3050 {
3051         static MonoMethod *memcpy_method = NULL;
3052         if (!memcpy_method) {
3053                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3054                 if (!memcpy_method)
3055                         g_error ("Old corlib found. Install a new one");
3056         }
3057         return memcpy_method;
3058 }
3059
3060 static void
3061 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3062 {
3063         MonoClassField *field;
3064         gpointer iter = NULL;
3065
3066         while ((field = mono_class_get_fields (klass, &iter))) {
3067                 int foffset;
3068
3069                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3070                         continue;
3071                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3072                 if (mini_type_is_reference (cfg, mono_field_get_type (field))) {
3073                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3074                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3075                 } else {
3076                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3077                         if (field_class->has_references)
3078                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3079                 }
3080         }
3081 }
3082
3083 static void
3084 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3085 {
3086         int card_table_shift_bits;
3087         gpointer card_table_mask;
3088         guint8 *card_table;
3089         MonoInst *dummy_use;
3090         int nursery_shift_bits;
3091         size_t nursery_size;
3092         gboolean has_card_table_wb = FALSE;
3093
3094         if (!cfg->gen_write_barriers)
3095                 return;
3096
3097         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3098
3099         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3100
3101 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
3102         has_card_table_wb = TRUE;
3103 #endif
3104
3105         if (has_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3106                 MonoInst *wbarrier;
3107
3108                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3109                 wbarrier->sreg1 = ptr->dreg;
3110                 wbarrier->sreg2 = value->dreg;
3111                 MONO_ADD_INS (cfg->cbb, wbarrier);
3112         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3113                 int offset_reg = alloc_preg (cfg);
3114                 int card_reg  = alloc_preg (cfg);
3115                 MonoInst *ins;
3116
3117                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3118                 if (card_table_mask)
3119                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3120
3121                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3122                  * IMM's larger than 32bits.
3123                  */
3124                 if (cfg->compile_aot) {
3125                         MONO_EMIT_NEW_AOTCONST (cfg, card_reg, NULL, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR);
3126                 } else {
3127                         MONO_INST_NEW (cfg, ins, OP_PCONST);
3128                         ins->inst_p0 = card_table;
3129                         ins->dreg = card_reg;
3130                         MONO_ADD_INS (cfg->cbb, ins);
3131                 }
3132
3133                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3134                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3135         } else {
3136                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3137                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3138         }
3139
3140         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3141 }
3142
3143 static gboolean
3144 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3145 {
3146         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3147         unsigned need_wb = 0;
3148
3149         if (align == 0)
3150                 align = 4;
3151
3152         /*types with references can't have alignment smaller than sizeof(void*) */
3153         if (align < SIZEOF_VOID_P)
3154                 return FALSE;
3155
3156         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3157         if (size > 32 * SIZEOF_VOID_P)
3158                 return FALSE;
3159
3160         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3161
3162         /* We don't unroll more than 5 stores to avoid code bloat. */
3163         if (size > 5 * SIZEOF_VOID_P) {
3164                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3165                 size += (SIZEOF_VOID_P - 1);
3166                 size &= ~(SIZEOF_VOID_P - 1);
3167
3168                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3169                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3170                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3171                 return TRUE;
3172         }
3173
3174         destreg = iargs [0]->dreg;
3175         srcreg = iargs [1]->dreg;
3176         offset = 0;
3177
3178         dest_ptr_reg = alloc_preg (cfg);
3179         tmp_reg = alloc_preg (cfg);
3180
3181         /*tmp = dreg*/
3182         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3183
3184         while (size >= SIZEOF_VOID_P) {
3185                 MonoInst *load_inst;
3186                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3187                 load_inst->dreg = tmp_reg;
3188                 load_inst->inst_basereg = srcreg;
3189                 load_inst->inst_offset = offset;
3190                 MONO_ADD_INS (cfg->cbb, load_inst);
3191
3192                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3193
3194                 if (need_wb & 0x1)
3195                         emit_write_barrier (cfg, iargs [0], load_inst);
3196
3197                 offset += SIZEOF_VOID_P;
3198                 size -= SIZEOF_VOID_P;
3199                 need_wb >>= 1;
3200
3201                 /*tmp += sizeof (void*)*/
3202                 if (size >= SIZEOF_VOID_P) {
3203                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3204                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3205                 }
3206         }
3207
3208         /* Those cannot be references since size < sizeof (void*) */
3209         while (size >= 4) {
3210                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3211                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3212                 offset += 4;
3213                 size -= 4;
3214         }
3215
3216         while (size >= 2) {
3217                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3218                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3219                 offset += 2;
3220                 size -= 2;
3221         }
3222
3223         while (size >= 1) {
3224                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3225                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3226                 offset += 1;
3227                 size -= 1;
3228         }
3229
3230         return TRUE;
3231 }
3232
3233 /*
3234  * Emit code to copy a valuetype of type @klass whose address is stored in
3235  * @src->dreg to memory whose address is stored at @dest->dreg.
3236  */
3237 void
3238 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3239 {
3240         MonoInst *iargs [4];
3241         int n;
3242         guint32 align = 0;
3243         MonoMethod *memcpy_method;
3244         MonoInst *size_ins = NULL;
3245         MonoInst *memcpy_ins = NULL;
3246
3247         g_assert (klass);
3248         if (cfg->generic_sharing_context)
3249                 klass = mono_class_from_mono_type (mini_get_underlying_type (cfg, &klass->byval_arg));
3250
3251         /*
3252          * This check breaks with spilled vars... need to handle it during verification anyway.
3253          * g_assert (klass && klass == src->klass && klass == dest->klass);
3254          */
3255
3256         if (mini_is_gsharedvt_klass (cfg, klass)) {
3257                 g_assert (!native);
3258                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3259                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3260         }
3261
3262         if (native)
3263                 n = mono_class_native_size (klass, &align);
3264         else
3265                 n = mono_class_value_size (klass, &align);
3266
3267         /* if native is true there should be no references in the struct */
3268         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3269                 /* Avoid barriers when storing to the stack */
3270                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3271                           (dest->opcode == OP_LDADDR))) {
3272                         int context_used;
3273
3274                         iargs [0] = dest;
3275                         iargs [1] = src;
3276
3277                         context_used = mini_class_check_context_used (cfg, klass);
3278
3279                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3280                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3281                                 return;
3282                         } else if (context_used) {
3283                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3284                         }  else {
3285                                 if (cfg->compile_aot) {
3286                                         EMIT_NEW_CLASSCONST (cfg, iargs [2], klass);
3287                                 } else {
3288                                         EMIT_NEW_PCONST (cfg, iargs [2], klass);
3289                                         mono_class_compute_gc_descriptor (klass);
3290                                 }
3291                         }
3292
3293                         if (size_ins)
3294                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3295                         else
3296                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3297                         return;
3298                 }
3299         }
3300
3301         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3302                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3303                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3304         } else {
3305                 iargs [0] = dest;
3306                 iargs [1] = src;
3307                 if (size_ins)
3308                         iargs [2] = size_ins;
3309                 else
3310                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3311
3312                 memcpy_method = get_memcpy_method ();
3313                 if (memcpy_ins)
3314                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3315                 else
3316                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3317         }
3318 }
3319
3320 static MonoMethod*
3321 get_memset_method (void)
3322 {
3323         static MonoMethod *memset_method = NULL;
3324         if (!memset_method) {
3325                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3326                 if (!memset_method)
3327                         g_error ("Old corlib found. Install a new one");
3328         }
3329         return memset_method;
3330 }
3331
3332 void
3333 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3334 {
3335         MonoInst *iargs [3];
3336         int n;
3337         guint32 align;
3338         MonoMethod *memset_method;
3339         MonoInst *size_ins = NULL;
3340         MonoInst *bzero_ins = NULL;
3341         static MonoMethod *bzero_method;
3342
3343         /* FIXME: Optimize this for the case when dest is an LDADDR */
3344         mono_class_init (klass);
3345         if (mini_is_gsharedvt_klass (cfg, klass)) {
3346                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3347                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3348                 if (!bzero_method)
3349                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3350                 g_assert (bzero_method);
3351                 iargs [0] = dest;
3352                 iargs [1] = size_ins;
3353                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3354                 return;
3355         }
3356
3357         n = mono_class_value_size (klass, &align);
3358
3359         if (n <= sizeof (gpointer) * 8) {
3360                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3361         }
3362         else {
3363                 memset_method = get_memset_method ();
3364                 iargs [0] = dest;
3365                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3366                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3367                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3368         }
3369 }
3370
3371 static MonoInst*
3372 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3373 {
3374         MonoInst *this = NULL;
3375
3376         g_assert (cfg->generic_sharing_context);
3377
3378         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3379                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3380                         !method->klass->valuetype)
3381                 EMIT_NEW_ARGLOAD (cfg, this, 0);
3382
3383         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3384                 MonoInst *mrgctx_loc, *mrgctx_var;
3385
3386                 g_assert (!this);
3387                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3388
3389                 mrgctx_loc = mono_get_vtable_var (cfg);
3390                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3391
3392                 return mrgctx_var;
3393         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3394                 MonoInst *vtable_loc, *vtable_var;
3395
3396                 g_assert (!this);
3397
3398                 vtable_loc = mono_get_vtable_var (cfg);
3399                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3400
3401                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3402                         MonoInst *mrgctx_var = vtable_var;
3403                         int vtable_reg;
3404
3405                         vtable_reg = alloc_preg (cfg);
3406                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3407                         vtable_var->type = STACK_PTR;
3408                 }
3409
3410                 return vtable_var;
3411         } else {
3412                 MonoInst *ins;
3413                 int vtable_reg;
3414
3415                 vtable_reg = alloc_preg (cfg);
3416                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3417                 return ins;
3418         }
3419 }
3420
3421 static MonoJumpInfoRgctxEntry *
3422 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3423 {
3424         MonoJumpInfoRgctxEntry *res = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3425         res->method = method;
3426         res->in_mrgctx = in_mrgctx;
3427         res->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3428         res->data->type = patch_type;
3429         res->data->data.target = patch_data;
3430         res->info_type = info_type;
3431
3432         return res;
3433 }
3434
3435 static inline MonoInst*
3436 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3437 {
3438         return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3439 }
3440
3441 static MonoInst*
3442 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3443                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3444 {
3445         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3446         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3447
3448         return emit_rgctx_fetch (cfg, rgctx, entry);
3449 }
3450
3451 static MonoInst*
3452 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3453                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3454 {
3455         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3456         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3457
3458         return emit_rgctx_fetch (cfg, rgctx, entry);
3459 }
3460
3461 static MonoInst*
3462 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3463                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3464 {
3465         MonoJumpInfoGSharedVtCall *call_info;
3466         MonoJumpInfoRgctxEntry *entry;
3467         MonoInst *rgctx;
3468
3469         call_info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3470         call_info->sig = sig;
3471         call_info->method = cmethod;
3472
3473         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3474         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3475
3476         return emit_rgctx_fetch (cfg, rgctx, entry);
3477 }
3478
3479 /*
3480  * emit_get_rgctx_virt_method:
3481  *
3482  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3483  */
3484 static MonoInst*
3485 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3486                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3487 {
3488         MonoJumpInfoVirtMethod *info;
3489         MonoJumpInfoRgctxEntry *entry;
3490         MonoInst *rgctx;
3491
3492         info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3493         info->klass = klass;
3494         info->method = virt_method;
3495
3496         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3497         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3498
3499         return emit_rgctx_fetch (cfg, rgctx, entry);
3500 }
3501
3502 static MonoInst*
3503 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3504                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3505 {
3506         MonoJumpInfoRgctxEntry *entry;
3507         MonoInst *rgctx;
3508
3509         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3510         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3511
3512         return emit_rgctx_fetch (cfg, rgctx, entry);
3513 }
3514
3515 /*
3516  * emit_get_rgctx_method:
3517  *
3518  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3519  * normal constants, else emit a load from the rgctx.
3520  */
3521 static MonoInst*
3522 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3523                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3524 {
3525         if (!context_used) {
3526                 MonoInst *ins;
3527
3528                 switch (rgctx_type) {
3529                 case MONO_RGCTX_INFO_METHOD:
3530                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3531                         return ins;
3532                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3533                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3534                         return ins;
3535                 default:
3536                         g_assert_not_reached ();
3537                 }
3538         } else {
3539                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3540                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3541
3542                 return emit_rgctx_fetch (cfg, rgctx, entry);
3543         }
3544 }
3545
3546 static MonoInst*
3547 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3548                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3549 {
3550         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3551         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3552
3553         return emit_rgctx_fetch (cfg, rgctx, entry);
3554 }
3555
3556 static int
3557 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3558 {
3559         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3560         MonoRuntimeGenericContextInfoTemplate *template;
3561         int i, idx;
3562
3563         g_assert (info);
3564
3565         for (i = 0; i < info->num_entries; ++i) {
3566                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3567
3568                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3569                         return i;
3570         }
3571
3572         if (info->num_entries == info->count_entries) {
3573                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3574                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3575
3576                 new_entries = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3577
3578                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3579                 info->entries = new_entries;
3580                 info->count_entries = new_count_entries;
3581         }
3582
3583         idx = info->num_entries;
3584         template = &info->entries [idx];
3585         template->info_type = rgctx_type;
3586         template->data = data;
3587
3588         info->num_entries ++;
3589
3590         return idx;
3591 }
3592
3593 /*
3594  * emit_get_gsharedvt_info:
3595  *
3596  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3597  */
3598 static MonoInst*
3599 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3600 {
3601         MonoInst *ins;
3602         int idx, dreg;
3603
3604         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3605         /* Load info->entries [idx] */
3606         dreg = alloc_preg (cfg);
3607         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3608
3609         return ins;
3610 }
3611
3612 static MonoInst*
3613 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3614 {
3615         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3616 }
3617
3618 /*
3619  * On return the caller must check @klass for load errors.
3620  */
3621 static void
3622 emit_generic_class_init (MonoCompile *cfg, MonoClass *klass, MonoBasicBlock **out_bblock)
3623 {
3624         MonoInst *vtable_arg;
3625         int context_used;
3626         gboolean use_op_generic_class_init = FALSE;
3627
3628         *out_bblock = cfg->cbb;
3629
3630         context_used = mini_class_check_context_used (cfg, klass);
3631
3632         if (context_used) {
3633                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3634                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3635         } else {
3636                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3637
3638                 if (!vtable)
3639                         return;
3640                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3641         }
3642
3643 #ifdef MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT
3644         if (!COMPILE_LLVM (cfg))
3645                 use_op_generic_class_init = TRUE;
3646 #endif
3647
3648         if (use_op_generic_class_init) {
3649                 MonoInst *ins;
3650
3651                 /*
3652                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3653                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3654                  */
3655                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3656                 ins->sreg1 = vtable_arg->dreg;
3657                 MONO_ADD_INS (cfg->cbb, ins);
3658         } else {
3659                 static int byte_offset = -1;
3660                 static guint8 bitmask;
3661                 int bits_reg, inited_reg;
3662                 MonoBasicBlock *inited_bb;
3663                 MonoInst *args [16];
3664
3665                 if (byte_offset < 0)
3666                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3667
3668                 bits_reg = alloc_ireg (cfg);
3669                 inited_reg = alloc_ireg (cfg);
3670
3671                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3672                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3673
3674                 NEW_BBLOCK (cfg, inited_bb);
3675
3676                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3677                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3678
3679                 args [0] = vtable_arg;
3680                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3681
3682                 MONO_START_BB (cfg, inited_bb);
3683                 *out_bblock = inited_bb;
3684         }
3685 }
3686
3687
3688 static void
3689 emit_class_init (MonoCompile *cfg, MonoClass *klass, MonoBasicBlock **out_bblock)
3690 {
3691         /* This could be used as a fallback if needed */
3692         //emit_generic_class_init (cfg, klass, out_bblock);
3693
3694         *out_bblock = cfg->cbb;
3695
3696         mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, klass, helper_sig_class_init_trampoline, NULL);
3697 }
3698
3699 static void
3700 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3701 {
3702         MonoInst *ins;
3703
3704         if (cfg->gen_seq_points && cfg->method == method) {
3705                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3706                 if (nonempty_stack)
3707                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3708                 MONO_ADD_INS (cfg->cbb, ins);
3709         }
3710 }
3711
3712 static void
3713 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check, MonoBasicBlock **out_bblock)
3714 {
3715         if (mini_get_debug_options ()->better_cast_details) {
3716                 int vtable_reg = alloc_preg (cfg);
3717                 int klass_reg = alloc_preg (cfg);
3718                 MonoBasicBlock *is_null_bb = NULL;
3719                 MonoInst *tls_get;
3720                 int to_klass_reg, context_used;
3721
3722                 if (null_check) {
3723                         NEW_BBLOCK (cfg, is_null_bb);
3724
3725                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3726                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3727                 }
3728
3729                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3730                 if (!tls_get) {
3731                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3732                         exit (1);
3733                 }
3734
3735                 MONO_ADD_INS (cfg->cbb, tls_get);
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 = 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                         if (out_bblock)
3756                                 *out_bblock = cfg->cbb;
3757                 }
3758         }
3759 }
3760
3761 static void
3762 reset_cast_details (MonoCompile *cfg)
3763 {
3764         /* Reset the variables holding the cast details */
3765         if (mini_get_debug_options ()->better_cast_details) {
3766                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3767
3768                 MONO_ADD_INS (cfg->cbb, tls_get);
3769                 /* It is enough to reset the from field */
3770                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3771         }
3772 }
3773
3774 /*
3775  * On return the caller must check @array_class for load errors
3776  */
3777 static void
3778 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3779 {
3780         int vtable_reg = alloc_preg (cfg);
3781         int context_used;
3782
3783         context_used = mini_class_check_context_used (cfg, array_class);
3784
3785         save_cast_details (cfg, array_class, obj->dreg, FALSE, NULL);
3786
3787         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3788
3789         if (cfg->opt & MONO_OPT_SHARED) {
3790                 int class_reg = alloc_preg (cfg);
3791                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3792                 if (cfg->compile_aot) {
3793                         int klass_reg = alloc_preg (cfg);
3794                         MONO_EMIT_NEW_CLASSCONST (cfg, klass_reg, array_class);
3795                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, klass_reg);
3796                 } else {
3797                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, class_reg, array_class);
3798                 }
3799         } else if (context_used) {
3800                 MonoInst *vtable_ins;
3801
3802                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3803                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3804         } else {
3805                 if (cfg->compile_aot) {
3806                         int vt_reg;
3807                         MonoVTable *vtable;
3808
3809                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3810                                 return;
3811                         vt_reg = alloc_preg (cfg);
3812                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3813                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3814                 } else {
3815                         MonoVTable *vtable;
3816                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3817                                 return;
3818                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3819                 }
3820         }
3821
3822         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3823
3824         reset_cast_details (cfg);
3825 }
3826
3827 /**
3828  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3829  * generic code is generated.
3830  */
3831 static MonoInst*
3832 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3833 {
3834         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3835
3836         if (context_used) {
3837                 MonoInst *rgctx, *addr;
3838
3839                 /* FIXME: What if the class is shared?  We might not
3840                    have to get the address of the method from the
3841                    RGCTX. */
3842                 addr = emit_get_rgctx_method (cfg, context_used, method,
3843                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3844
3845                 rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3846
3847                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3848         } else {
3849                 gboolean pass_vtable, pass_mrgctx;
3850                 MonoInst *rgctx_arg = NULL;
3851
3852                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3853                 g_assert (!pass_mrgctx);
3854
3855                 if (pass_vtable) {
3856                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3857
3858                         g_assert (vtable);
3859                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3860                 }
3861
3862                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3863         }
3864 }
3865
3866 static MonoInst*
3867 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3868 {
3869         MonoInst *add;
3870         int obj_reg;
3871         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3872         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3873         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3874         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3875
3876         obj_reg = sp [0]->dreg;
3877         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3878         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3879
3880         /* FIXME: generics */
3881         g_assert (klass->rank == 0);
3882
3883         // Check rank == 0
3884         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3885         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3886
3887         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3888         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3889
3890         if (context_used) {
3891                 MonoInst *element_class;
3892
3893                 /* This assertion is from the unboxcast insn */
3894                 g_assert (klass->rank == 0);
3895
3896                 element_class = emit_get_rgctx_klass (cfg, context_used,
3897                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3898
3899                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3900                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3901         } else {
3902                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE, NULL);
3903                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3904                 reset_cast_details (cfg);
3905         }
3906
3907         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3908         MONO_ADD_INS (cfg->cbb, add);
3909         add->type = STACK_MP;
3910         add->klass = klass;
3911
3912         return add;
3913 }
3914
3915 static MonoInst*
3916 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj, MonoBasicBlock **out_cbb)
3917 {
3918         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3919         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3920         MonoInst *ins;
3921         int dreg, addr_reg;
3922
3923         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3924
3925         /* obj */
3926         args [0] = obj;
3927
3928         /* klass */
3929         args [1] = klass_inst;
3930
3931         /* CASTCLASS */
3932         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3933
3934         NEW_BBLOCK (cfg, is_ref_bb);
3935         NEW_BBLOCK (cfg, is_nullable_bb);
3936         NEW_BBLOCK (cfg, end_bb);
3937         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3938         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3939         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3940
3941         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
3942         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3943
3944         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3945         addr_reg = alloc_dreg (cfg, STACK_MP);
3946
3947         /* Non-ref case */
3948         /* UNBOX */
3949         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3950         MONO_ADD_INS (cfg->cbb, addr);
3951
3952         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3953
3954         /* Ref case */
3955         MONO_START_BB (cfg, is_ref_bb);
3956
3957         /* Save the ref to a temporary */
3958         dreg = alloc_ireg (cfg);
3959         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3960         addr->dreg = addr_reg;
3961         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3962         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3963
3964         /* Nullable case */
3965         MONO_START_BB (cfg, is_nullable_bb);
3966
3967         {
3968                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3969                 MonoInst *unbox_call;
3970                 MonoMethodSignature *unbox_sig;
3971
3972                 unbox_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3973                 unbox_sig->ret = &klass->byval_arg;
3974                 unbox_sig->param_count = 1;
3975                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
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         *out_cbb = cfg->cbb;
3991
3992         return ins;
3993 }
3994
3995 /*
3996  * Returns NULL and set the cfg exception on error.
3997  */
3998 static MonoInst*
3999 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4000 {
4001         MonoInst *iargs [2];
4002         void *alloc_ftn;
4003
4004         if (context_used) {
4005                 MonoInst *data;
4006                 int rgctx_info;
4007                 MonoInst *iargs [2];
4008                 gboolean known_instance_size = !mini_is_gsharedvt_klass (cfg, klass);
4009
4010                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4011
4012                 if (cfg->opt & MONO_OPT_SHARED)
4013                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4014                 else
4015                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4016                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4017
4018                 if (cfg->opt & MONO_OPT_SHARED) {
4019                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4020                         iargs [1] = data;
4021                         alloc_ftn = mono_object_new;
4022                 } else {
4023                         iargs [0] = data;
4024                         alloc_ftn = mono_object_new_specific;
4025                 }
4026
4027                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4028                         if (known_instance_size) {
4029                                 int size = mono_class_instance_size (klass);
4030                                 if (size < sizeof (MonoObject))
4031                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4032
4033                                 EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4034                         }
4035                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4036                 }
4037
4038                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4039         }
4040
4041         if (cfg->opt & MONO_OPT_SHARED) {
4042                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4043                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4044
4045                 alloc_ftn = mono_object_new;
4046         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4047                 /* This happens often in argument checking code, eg. throw new FooException... */
4048                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4049                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4050                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4051         } else {
4052                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4053                 MonoMethod *managed_alloc = NULL;
4054                 gboolean pass_lw;
4055
4056                 if (!vtable) {
4057                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4058                         cfg->exception_ptr = klass;
4059                         return NULL;
4060                 }
4061
4062 #ifndef MONO_CROSS_COMPILE
4063                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4064 #endif
4065
4066                 if (managed_alloc) {
4067                         int size = mono_class_instance_size (klass);
4068                         if (size < sizeof (MonoObject))
4069                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4070
4071                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4072                         EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4073                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4074                 }
4075                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4076                 if (pass_lw) {
4077                         guint32 lw = vtable->klass->instance_size;
4078                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4079                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4080                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4081                 }
4082                 else {
4083                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4084                 }
4085         }
4086
4087         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4088 }
4089
4090 /*
4091  * Returns NULL and set the cfg exception on error.
4092  */
4093 static MonoInst*
4094 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used, MonoBasicBlock **out_cbb)
4095 {
4096         MonoInst *alloc, *ins;
4097
4098         *out_cbb = cfg->cbb;
4099
4100         if (mono_class_is_nullable (klass)) {
4101                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4102
4103                 if (context_used) {
4104                         /* FIXME: What if the class is shared?  We might not
4105                            have to get the method address from the RGCTX. */
4106                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4107                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4108                         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4109
4110                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
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 (cfg, 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, 1);
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, 2);
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 = 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                         box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4187                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4188                         res->type = STACK_OBJ;
4189                         res->klass = klass;
4190                 }
4191
4192                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4193
4194                 MONO_START_BB (cfg, end_bb);
4195
4196                 *out_cbb = cfg->cbb;
4197
4198                 return res;
4199         } else {
4200                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4201                 if (!alloc)
4202                         return NULL;
4203
4204                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4205                 return alloc;
4206         }
4207 }
4208
4209 static gboolean
4210 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4211 {
4212         int i;
4213         MonoGenericContainer *container;
4214         MonoGenericInst *ginst;
4215
4216         if (klass->generic_class) {
4217                 container = klass->generic_class->container_class->generic_container;
4218                 ginst = klass->generic_class->context.class_inst;
4219         } else if (klass->generic_container && context_used) {
4220                 container = klass->generic_container;
4221                 ginst = container->context.class_inst;
4222         } else {
4223                 return FALSE;
4224         }
4225
4226         for (i = 0; i < container->type_argc; ++i) {
4227                 MonoType *type;
4228                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4229                         continue;
4230                 type = ginst->type_argv [i];
4231                 if (mini_type_is_reference (cfg, type))
4232                         return TRUE;
4233         }
4234         return FALSE;
4235 }
4236
4237 static GHashTable* direct_icall_type_hash;
4238
4239 static gboolean
4240 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4241 {
4242         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4243         if (!direct_icalls_enabled (cfg))
4244                 return FALSE;
4245
4246         /*
4247          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4248          * Whitelist a few icalls for now.
4249          */
4250         if (!direct_icall_type_hash) {
4251                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4252
4253                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4254                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4255                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4256                 mono_memory_barrier ();
4257                 direct_icall_type_hash = h;
4258         }
4259
4260         if (cmethod->klass == mono_defaults.math_class)
4261                 return TRUE;
4262         /* No locking needed */
4263         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4264                 return TRUE;
4265         return FALSE;
4266 }
4267
4268 #define is_complex_isinst(klass) ((klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || mono_class_is_marshalbyref (klass) || (klass->flags & TYPE_ATTRIBUTE_SEALED) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
4269
4270 static MonoInst*
4271 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args, MonoBasicBlock **out_bblock)
4272 {
4273         MonoMethod *mono_castclass;
4274         MonoInst *res;
4275
4276         mono_castclass = mono_marshal_get_castclass_with_cache ();
4277
4278         save_cast_details (cfg, klass, args [0]->dreg, TRUE, out_bblock);
4279         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4280         reset_cast_details (cfg);
4281         *out_bblock = cfg->cbb;
4282
4283         return res;
4284 }
4285
4286 static int
4287 get_castclass_cache_idx (MonoCompile *cfg)
4288 {
4289         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4290         cfg->castclass_cache_index ++;
4291         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4292 }
4293
4294 static MonoInst*
4295 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass, MonoBasicBlock **out_bblock)
4296 {
4297         MonoInst *args [3];
4298         int idx;
4299
4300         /* obj */
4301         args [0] = obj;
4302
4303         /* klass */
4304         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4305
4306         /* inline cache*/
4307         if (cfg->compile_aot) {
4308                 idx = get_castclass_cache_idx (cfg);
4309                 EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4310         } else {
4311                 EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
4312         }
4313
4314         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4315
4316         return emit_castclass_with_cache (cfg, klass, args, out_bblock);
4317 }
4318
4319 /*
4320  * Returns NULL and set the cfg exception on error.
4321  */
4322 static MonoInst*
4323 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, MonoBasicBlock **out_bb, int *inline_costs)
4324 {
4325         MonoBasicBlock *is_null_bb;
4326         int obj_reg = src->dreg;
4327         int vtable_reg = alloc_preg (cfg);
4328         int context_used;
4329         MonoInst *klass_inst = NULL, *res;
4330         MonoBasicBlock *bblock;
4331
4332         *out_bb = cfg->cbb;
4333
4334         context_used = mini_class_check_context_used (cfg, klass);
4335
4336         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4337                 res = emit_castclass_with_cache_nonshared (cfg, src, klass, &bblock);
4338                 (*inline_costs) += 2;
4339                 *out_bb = cfg->cbb;
4340                 return res;
4341         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4342                 MonoMethod *mono_castclass;
4343                 MonoInst *iargs [1];
4344                 int costs;
4345
4346                 mono_castclass = mono_marshal_get_castclass (klass);
4347                 iargs [0] = src;
4348
4349                 save_cast_details (cfg, klass, src->dreg, TRUE, &bblock);
4350                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4351                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
4352                 reset_cast_details (cfg);
4353                 CHECK_CFG_EXCEPTION;
4354                 g_assert (costs > 0);
4355
4356                 cfg->real_offset += 5;
4357
4358                 (*inline_costs) += costs;
4359
4360                 *out_bb = cfg->cbb;
4361                 return src;
4362         }
4363
4364         if (context_used) {
4365                 MonoInst *args [3];
4366
4367                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4368                         MonoInst *cache_ins;
4369
4370                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4371
4372                         /* obj */
4373                         args [0] = src;
4374
4375                         /* klass - it's the second element of the cache entry*/
4376                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4377
4378                         /* cache */
4379                         args [2] = cache_ins;
4380
4381                         return emit_castclass_with_cache (cfg, klass, args, out_bb);
4382                 }
4383
4384                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4385         }
4386
4387         NEW_BBLOCK (cfg, is_null_bb);
4388
4389         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4390         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4391
4392         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4393
4394         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4395                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4396                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4397         } else {
4398                 int klass_reg = alloc_preg (cfg);
4399
4400                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4401
4402                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4403                         /* the remoting code is broken, access the class for now */
4404                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4405                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4406                                 if (!vt) {
4407                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4408                                         cfg->exception_ptr = klass;
4409                                         return NULL;
4410                                 }
4411                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4412                         } else {
4413                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4414                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4415                         }
4416                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4417                 } else {
4418                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4419                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4420                 }
4421         }
4422
4423         MONO_START_BB (cfg, is_null_bb);
4424
4425         reset_cast_details (cfg);
4426
4427         *out_bb = cfg->cbb;
4428
4429         return src;
4430
4431 exception_exit:
4432         return NULL;
4433 }
4434
4435 /*
4436  * Returns NULL and set the cfg exception on error.
4437  */
4438 static MonoInst*
4439 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4440 {
4441         MonoInst *ins;
4442         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4443         int obj_reg = src->dreg;
4444         int vtable_reg = alloc_preg (cfg);
4445         int res_reg = alloc_ireg_ref (cfg);
4446         MonoInst *klass_inst = NULL;
4447
4448         if (context_used) {
4449                 MonoInst *args [3];
4450
4451                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4452                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4453                         MonoInst *cache_ins;
4454
4455                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4456
4457                         /* obj */
4458                         args [0] = src;
4459
4460                         /* klass - it's the second element of the cache entry*/
4461                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4462
4463                         /* cache */
4464                         args [2] = cache_ins;
4465
4466                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4467                 }
4468
4469                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4470         }
4471
4472         NEW_BBLOCK (cfg, is_null_bb);
4473         NEW_BBLOCK (cfg, false_bb);
4474         NEW_BBLOCK (cfg, end_bb);
4475
4476         /* Do the assignment at the beginning, so the other assignment can be if converted */
4477         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4478         ins->type = STACK_OBJ;
4479         ins->klass = klass;
4480
4481         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4482         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4483
4484         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4485
4486         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4487                 g_assert (!context_used);
4488                 /* the is_null_bb target simply copies the input register to the output */
4489                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4490         } else {
4491                 int klass_reg = alloc_preg (cfg);
4492
4493                 if (klass->rank) {
4494                         int rank_reg = alloc_preg (cfg);
4495                         int eclass_reg = alloc_preg (cfg);
4496
4497                         g_assert (!context_used);
4498                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4499                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4500                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4501                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4502                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4503                         if (klass->cast_class == mono_defaults.object_class) {
4504                                 int parent_reg = alloc_preg (cfg);
4505                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4506                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4507                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4508                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4509                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4510                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4511                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4512                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4513                         } else if (klass->cast_class == mono_defaults.enum_class) {
4514                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4515                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4516                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4517                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4518                         } else {
4519                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4520                                         /* Check that the object is a vector too */
4521                                         int bounds_reg = alloc_preg (cfg);
4522                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4523                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4524                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4525                                 }
4526
4527                                 /* the is_null_bb target simply copies the input register to the output */
4528                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4529                         }
4530                 } else if (mono_class_is_nullable (klass)) {
4531                         g_assert (!context_used);
4532                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4533                         /* the is_null_bb target simply copies the input register to the output */
4534                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4535                 } else {
4536                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4537                                 g_assert (!context_used);
4538                                 /* the remoting code is broken, access the class for now */
4539                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4540                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4541                                         if (!vt) {
4542                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4543                                                 cfg->exception_ptr = klass;
4544                                                 return NULL;
4545                                         }
4546                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4547                                 } else {
4548                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4549                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4550                                 }
4551                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4552                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4553                         } else {
4554                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4555                                 /* the is_null_bb target simply copies the input register to the output */
4556                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4557                         }
4558                 }
4559         }
4560
4561         MONO_START_BB (cfg, false_bb);
4562
4563         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4564         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4565
4566         MONO_START_BB (cfg, is_null_bb);
4567
4568         MONO_START_BB (cfg, end_bb);
4569
4570         return ins;
4571 }
4572
4573 static MonoInst*
4574 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4575 {
4576         /* This opcode takes as input an object reference and a class, and returns:
4577         0) if the object is an instance of the class,
4578         1) if the object is not instance of the class,
4579         2) if the object is a proxy whose type cannot be determined */
4580
4581         MonoInst *ins;
4582 #ifndef DISABLE_REMOTING
4583         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4584 #else
4585         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4586 #endif
4587         int obj_reg = src->dreg;
4588         int dreg = alloc_ireg (cfg);
4589         int tmp_reg;
4590 #ifndef DISABLE_REMOTING
4591         int klass_reg = alloc_preg (cfg);
4592 #endif
4593
4594         NEW_BBLOCK (cfg, true_bb);
4595         NEW_BBLOCK (cfg, false_bb);
4596         NEW_BBLOCK (cfg, end_bb);
4597 #ifndef DISABLE_REMOTING
4598         NEW_BBLOCK (cfg, false2_bb);
4599         NEW_BBLOCK (cfg, no_proxy_bb);
4600 #endif
4601
4602         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4603         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4604
4605         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4606 #ifndef DISABLE_REMOTING
4607                 NEW_BBLOCK (cfg, interface_fail_bb);
4608 #endif
4609
4610                 tmp_reg = alloc_preg (cfg);
4611                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4612 #ifndef DISABLE_REMOTING
4613                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4614                 MONO_START_BB (cfg, interface_fail_bb);
4615                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4616
4617                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4618
4619                 tmp_reg = alloc_preg (cfg);
4620                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4621                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4622                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4623 #else
4624                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4625 #endif
4626         } else {
4627 #ifndef DISABLE_REMOTING
4628                 tmp_reg = alloc_preg (cfg);
4629                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4630                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4631
4632                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4633                 tmp_reg = alloc_preg (cfg);
4634                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4635                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4636
4637                 tmp_reg = alloc_preg (cfg);
4638                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4639                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4640                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4641
4642                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4643                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4644
4645                 MONO_START_BB (cfg, no_proxy_bb);
4646
4647                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4648 #else
4649                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4650 #endif
4651         }
4652
4653         MONO_START_BB (cfg, false_bb);
4654
4655         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4656         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4657
4658 #ifndef DISABLE_REMOTING
4659         MONO_START_BB (cfg, false2_bb);
4660
4661         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4662         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4663 #endif
4664
4665         MONO_START_BB (cfg, true_bb);
4666
4667         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4668
4669         MONO_START_BB (cfg, end_bb);
4670
4671         /* FIXME: */
4672         MONO_INST_NEW (cfg, ins, OP_ICONST);
4673         ins->dreg = dreg;
4674         ins->type = STACK_I4;
4675
4676         return ins;
4677 }
4678
4679 static MonoInst*
4680 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4681 {
4682         /* This opcode takes as input an object reference and a class, and returns:
4683         0) if the object is an instance of the class,
4684         1) if the object is a proxy whose type cannot be determined
4685         an InvalidCastException exception is thrown otherwhise*/
4686
4687         MonoInst *ins;
4688 #ifndef DISABLE_REMOTING
4689         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4690 #else
4691         MonoBasicBlock *ok_result_bb;
4692 #endif
4693         int obj_reg = src->dreg;
4694         int dreg = alloc_ireg (cfg);
4695         int tmp_reg = alloc_preg (cfg);
4696
4697 #ifndef DISABLE_REMOTING
4698         int klass_reg = alloc_preg (cfg);
4699         NEW_BBLOCK (cfg, end_bb);
4700 #endif
4701
4702         NEW_BBLOCK (cfg, ok_result_bb);
4703
4704         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4705         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4706
4707         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4708
4709         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4710 #ifndef DISABLE_REMOTING
4711                 NEW_BBLOCK (cfg, interface_fail_bb);
4712
4713                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4714                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4715                 MONO_START_BB (cfg, interface_fail_bb);
4716                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4717
4718                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4719
4720                 tmp_reg = alloc_preg (cfg);
4721                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4722                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4723                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4724
4725                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4726                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4727 #else
4728                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4729                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4730                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4731 #endif
4732         } else {
4733 #ifndef DISABLE_REMOTING
4734                 NEW_BBLOCK (cfg, no_proxy_bb);
4735
4736                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4737                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4738                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4739
4740                 tmp_reg = alloc_preg (cfg);
4741                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4742                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4743
4744                 tmp_reg = alloc_preg (cfg);
4745                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4746                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4747                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4748
4749                 NEW_BBLOCK (cfg, fail_1_bb);
4750
4751                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4752
4753                 MONO_START_BB (cfg, fail_1_bb);
4754
4755                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4756                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4757
4758                 MONO_START_BB (cfg, no_proxy_bb);
4759
4760                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4761 #else
4762                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4763 #endif
4764         }
4765
4766         MONO_START_BB (cfg, ok_result_bb);
4767
4768         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4769
4770 #ifndef DISABLE_REMOTING
4771         MONO_START_BB (cfg, end_bb);
4772 #endif
4773
4774         /* FIXME: */
4775         MONO_INST_NEW (cfg, ins, OP_ICONST);
4776         ins->dreg = dreg;
4777         ins->type = STACK_I4;
4778
4779         return ins;
4780 }
4781
4782 static G_GNUC_UNUSED MonoInst*
4783 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4784 {
4785         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4786         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4787         gboolean is_i4;
4788
4789         switch (enum_type->type) {
4790         case MONO_TYPE_I8:
4791         case MONO_TYPE_U8:
4792 #if SIZEOF_REGISTER == 8
4793         case MONO_TYPE_I:
4794         case MONO_TYPE_U:
4795 #endif
4796                 is_i4 = FALSE;
4797                 break;
4798         default:
4799                 is_i4 = TRUE;
4800                 break;
4801         }
4802
4803         {
4804                 MonoInst *load, *and, *cmp, *ceq;
4805                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4806                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4807                 int dest_reg = alloc_ireg (cfg);
4808
4809                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4810                 EMIT_NEW_BIALU (cfg, and, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4811                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4812                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4813
4814                 ceq->type = STACK_I4;
4815
4816                 if (!is_i4) {
4817                         load = mono_decompose_opcode (cfg, load, NULL);
4818                         and = mono_decompose_opcode (cfg, and, NULL);
4819                         cmp = mono_decompose_opcode (cfg, cmp, NULL);
4820                         ceq = mono_decompose_opcode (cfg, ceq, NULL);
4821                 }
4822
4823                 return ceq;
4824         }
4825 }
4826
4827 /*
4828  * Returns NULL and set the cfg exception on error.
4829  */
4830 static G_GNUC_UNUSED MonoInst*
4831 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual)
4832 {
4833         MonoInst *ptr;
4834         int dreg;
4835         gpointer trampoline;
4836         MonoInst *obj, *method_ins, *tramp_ins;
4837         MonoDomain *domain;
4838         guint8 **code_slot;
4839
4840         if (virtual) {
4841                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4842                 g_assert (invoke);
4843
4844                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4845                         return NULL;
4846         }
4847
4848         obj = handle_alloc (cfg, klass, FALSE, 0);
4849         if (!obj)
4850                 return NULL;
4851
4852         /* Inline the contents of mono_delegate_ctor */
4853
4854         /* Set target field */
4855         /* Optimize away setting of NULL target */
4856         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
4857                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4858                 if (cfg->gen_write_barriers) {
4859                         dreg = alloc_preg (cfg);
4860                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4861                         emit_write_barrier (cfg, ptr, target);
4862                 }
4863         }
4864
4865         /* Set method field */
4866         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4867         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4868
4869         /*
4870          * To avoid looking up the compiled code belonging to the target method
4871          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4872          * store it, and we fill it after the method has been compiled.
4873          */
4874         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4875                 MonoInst *code_slot_ins;
4876
4877                 if (context_used) {
4878                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4879                 } else {
4880                         domain = mono_domain_get ();
4881                         mono_domain_lock (domain);
4882                         if (!domain_jit_info (domain)->method_code_hash)
4883                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4884                         code_slot = g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4885                         if (!code_slot) {
4886                                 code_slot = mono_domain_alloc0 (domain, sizeof (gpointer));
4887                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4888                         }
4889                         mono_domain_unlock (domain);
4890
4891                         if (cfg->compile_aot)
4892                                 EMIT_NEW_AOTCONST (cfg, code_slot_ins, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4893                         else
4894                                 EMIT_NEW_PCONST (cfg, code_slot_ins, code_slot);
4895                 }
4896                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4897         }
4898
4899         if (cfg->compile_aot) {
4900                 MonoDelegateClassMethodPair *del_tramp;
4901
4902                 del_tramp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4903                 del_tramp->klass = klass;
4904                 del_tramp->method = context_used ? NULL : method;
4905                 del_tramp->virtual = virtual;
4906                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4907         } else {
4908                 if (virtual)
4909                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4910                 else
4911                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4912                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4913         }
4914
4915         /* Set invoke_impl field */
4916         if (virtual) {
4917                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4918         } else {
4919                 dreg = alloc_preg (cfg);
4920                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4921                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4922
4923                 dreg = alloc_preg (cfg);
4924                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4925                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4926         }
4927
4928         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4929
4930         return obj;
4931 }
4932
4933 static MonoInst*
4934 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4935 {
4936         MonoJitICallInfo *info;
4937
4938         /* Need to register the icall so it gets an icall wrapper */
4939         info = mono_get_array_new_va_icall (rank);
4940
4941         cfg->flags |= MONO_CFG_HAS_VARARGS;
4942
4943         /* mono_array_new_va () needs a vararg calling convention */
4944         cfg->disable_llvm = TRUE;
4945
4946         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4947         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4948 }
4949
4950 /*
4951  * handle_constrained_gsharedvt_call:
4952  *
4953  *   Handle constrained calls where the receiver is a gsharedvt type.
4954  * Return the instruction representing the call. Set the cfg exception on failure.
4955  */
4956 static MonoInst*
4957 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4958                                                                    gboolean *ref_emit_widen, MonoBasicBlock **ref_bblock)
4959 {
4960         MonoInst *ins = NULL;
4961         MonoBasicBlock *bblock = *ref_bblock;
4962         gboolean emit_widen = *ref_emit_widen;
4963
4964         /*
4965          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4966          * 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
4967          * pack the arguments into an array, and do the rest of the work in in an icall.
4968          */
4969         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4970                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (cfg, fsig->ret)) &&
4971                 (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 (cfg, fsig->params [0]))))) {
4972                 MonoInst *args [16];
4973
4974                 /*
4975                  * This case handles calls to
4976                  * - object:ToString()/Equals()/GetHashCode(),
4977                  * - System.IComparable<T>:CompareTo()
4978                  * - System.IEquatable<T>:Equals ()
4979                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4980                  */
4981
4982                 args [0] = sp [0];
4983                 if (mono_method_check_context_used (cmethod))
4984                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4985                 else
4986                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4987                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4988
4989                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4990                 if (fsig->hasthis && fsig->param_count) {
4991                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4992                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4993                         ins->dreg = alloc_preg (cfg);
4994                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4995                         MONO_ADD_INS (cfg->cbb, ins);
4996                         args [4] = ins;
4997
4998                         if (mini_is_gsharedvt_type (cfg, fsig->params [0])) {
4999                                 int addr_reg;
5000
5001                                 args [3] = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5002
5003                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5004                                 addr_reg = ins->dreg;
5005                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5006                         } else {
5007                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5008                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5009                         }
5010                 } else {
5011                         EMIT_NEW_ICONST (cfg, args [3], 0);
5012                         EMIT_NEW_ICONST (cfg, args [4], 0);
5013                 }
5014                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5015                 emit_widen = FALSE;
5016
5017                 if (mini_is_gsharedvt_type (cfg, fsig->ret)) {
5018                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins, &bblock);
5019                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5020                         MonoInst *add;
5021
5022                         /* Unbox */
5023                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5024                         MONO_ADD_INS (cfg->cbb, add);
5025                         /* Load value */
5026                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5027                         MONO_ADD_INS (cfg->cbb, ins);
5028                         /* ins represents the call result */
5029                 }
5030         } else {
5031                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5032         }
5033
5034         *ref_emit_widen = emit_widen;
5035         *ref_bblock = bblock;
5036
5037         return ins;
5038
5039  exception_exit:
5040         return NULL;
5041 }
5042
5043 static void
5044 mono_emit_load_got_addr (MonoCompile *cfg)
5045 {
5046         MonoInst *getaddr, *dummy_use;
5047
5048         if (!cfg->got_var || cfg->got_var_allocated)
5049                 return;
5050
5051         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5052         getaddr->cil_code = cfg->header->code;
5053         getaddr->dreg = cfg->got_var->dreg;
5054
5055         /* Add it to the start of the first bblock */
5056         if (cfg->bb_entry->code) {
5057                 getaddr->next = cfg->bb_entry->code;
5058                 cfg->bb_entry->code = getaddr;
5059         }
5060         else
5061                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5062
5063         cfg->got_var_allocated = TRUE;
5064
5065         /*
5066          * Add a dummy use to keep the got_var alive, since real uses might
5067          * only be generated by the back ends.
5068          * Add it to end_bblock, so the variable's lifetime covers the whole
5069          * method.
5070          * It would be better to make the usage of the got var explicit in all
5071          * cases when the backend needs it (i.e. calls, throw etc.), so this
5072          * wouldn't be needed.
5073          */
5074         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5075         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5076 }
5077
5078 static int inline_limit;
5079 static gboolean inline_limit_inited;
5080
5081 static gboolean
5082 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5083 {
5084         MonoMethodHeaderSummary header;
5085         MonoVTable *vtable;
5086 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5087         MonoMethodSignature *sig = mono_method_signature (method);
5088         int i;
5089 #endif
5090
5091         if (cfg->disable_inline)
5092                 return FALSE;
5093         if (cfg->generic_sharing_context)
5094                 return FALSE;
5095
5096         if (cfg->inline_depth > 10)
5097                 return FALSE;
5098
5099 #ifdef MONO_ARCH_HAVE_LMF_OPS
5100         if (((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
5101                  (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) &&
5102             !MONO_TYPE_ISSTRUCT (signature->ret) && !mini_class_is_system_array (method->klass))
5103                 return TRUE;
5104 #endif
5105
5106
5107         if (!mono_method_get_header_summary (method, &header))
5108                 return FALSE;
5109
5110         /*runtime, icall and pinvoke are checked by summary call*/
5111         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5112             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5113             (mono_class_is_marshalbyref (method->klass)) ||
5114             header.has_clauses)
5115                 return FALSE;
5116
5117         /* also consider num_locals? */
5118         /* Do the size check early to avoid creating vtables */
5119         if (!inline_limit_inited) {
5120                 if (g_getenv ("MONO_INLINELIMIT"))
5121                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5122                 else
5123                         inline_limit = INLINE_LENGTH_LIMIT;
5124                 inline_limit_inited = TRUE;
5125         }
5126         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5127                 return FALSE;
5128
5129         /*
5130          * if we can initialize the class of the method right away, we do,
5131          * otherwise we don't allow inlining if the class needs initialization,
5132          * since it would mean inserting a call to mono_runtime_class_init()
5133          * inside the inlined code
5134          */
5135         if (!(cfg->opt & MONO_OPT_SHARED)) {
5136                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5137                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5138                         vtable = mono_class_vtable (cfg->domain, method->klass);
5139                         if (!vtable)
5140                                 return FALSE;
5141                         if (!cfg->compile_aot)
5142                                 mono_runtime_class_init (vtable);
5143                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5144                         if (cfg->run_cctors && method->klass->has_cctor) {
5145                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5146                                 if (!method->klass->runtime_info)
5147                                         /* No vtable created yet */
5148                                         return FALSE;
5149                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5150                                 if (!vtable)
5151                                         return FALSE;
5152                                 /* This makes so that inline cannot trigger */
5153                                 /* .cctors: too many apps depend on them */
5154                                 /* running with a specific order... */
5155                                 if (! vtable->initialized)
5156                                         return FALSE;
5157                                 mono_runtime_class_init (vtable);
5158                         }
5159                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5160                         if (!method->klass->runtime_info)
5161                                 /* No vtable created yet */
5162                                 return FALSE;
5163                         vtable = mono_class_vtable (cfg->domain, method->klass);
5164                         if (!vtable)
5165                                 return FALSE;
5166                         if (!vtable->initialized)
5167                                 return FALSE;
5168                 }
5169         } else {
5170                 /*
5171                  * If we're compiling for shared code
5172                  * the cctor will need to be run at aot method load time, for example,
5173                  * or at the end of the compilation of the inlining method.
5174                  */
5175                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5176                         return FALSE;
5177         }
5178
5179 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5180         if (mono_arch_is_soft_float ()) {
5181                 /* FIXME: */
5182                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5183                         return FALSE;
5184                 for (i = 0; i < sig->param_count; ++i)
5185                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5186                                 return FALSE;
5187         }
5188 #endif
5189
5190         if (g_list_find (cfg->dont_inline, method))
5191                 return FALSE;
5192
5193         return TRUE;
5194 }
5195
5196 static gboolean
5197 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5198 {
5199         if (!cfg->compile_aot) {
5200                 g_assert (vtable);
5201                 if (vtable->initialized)
5202                         return FALSE;
5203         }
5204
5205         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5206                 if (cfg->method == method)
5207                         return FALSE;
5208         }
5209
5210         if (!mono_class_needs_cctor_run (klass, method))
5211                 return FALSE;
5212
5213         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5214                 /* The initialization is already done before the method is called */
5215                 return FALSE;
5216
5217         return TRUE;
5218 }
5219
5220 static MonoInst*
5221 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5222 {
5223         MonoInst *ins;
5224         guint32 size;
5225         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5226         int context_used;
5227
5228         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5229                 size = -1;
5230         } else {
5231                 mono_class_init (klass);
5232                 size = mono_class_array_element_size (klass);
5233         }
5234
5235         mult_reg = alloc_preg (cfg);
5236         array_reg = arr->dreg;
5237         index_reg = index->dreg;
5238
5239 #if SIZEOF_REGISTER == 8
5240         /* The array reg is 64 bits but the index reg is only 32 */
5241         if (COMPILE_LLVM (cfg)) {
5242                 /* Not needed */
5243                 index2_reg = index_reg;
5244         } else {
5245                 index2_reg = alloc_preg (cfg);
5246                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5247         }
5248 #else
5249         if (index->type == STACK_I8) {
5250                 index2_reg = alloc_preg (cfg);
5251                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5252         } else {
5253                 index2_reg = index_reg;
5254         }
5255 #endif
5256
5257         if (bcheck)
5258                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5259
5260 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5261         if (size == 1 || size == 2 || size == 4 || size == 8) {
5262                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5263
5264                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5265                 ins->klass = mono_class_get_element_class (klass);
5266                 ins->type = STACK_MP;
5267
5268                 return ins;
5269         }
5270 #endif
5271
5272         add_reg = alloc_ireg_mp (cfg);
5273
5274         if (size == -1) {
5275                 MonoInst *rgctx_ins;
5276
5277                 /* gsharedvt */
5278                 g_assert (cfg->generic_sharing_context);
5279                 context_used = mini_class_check_context_used (cfg, klass);
5280                 g_assert (context_used);
5281                 rgctx_ins = emit_get_gsharedvt_info (cfg, &klass->byval_arg, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5282                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5283         } else {
5284                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5285         }
5286         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5287         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5288         ins->klass = mono_class_get_element_class (klass);
5289         ins->type = STACK_MP;
5290         MONO_ADD_INS (cfg->cbb, ins);
5291
5292         return ins;
5293 }
5294
5295 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5296 static MonoInst*
5297 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5298 {
5299         int bounds_reg = alloc_preg (cfg);
5300         int add_reg = alloc_ireg_mp (cfg);
5301         int mult_reg = alloc_preg (cfg);
5302         int mult2_reg = alloc_preg (cfg);
5303         int low1_reg = alloc_preg (cfg);
5304         int low2_reg = alloc_preg (cfg);
5305         int high1_reg = alloc_preg (cfg);
5306         int high2_reg = alloc_preg (cfg);
5307         int realidx1_reg = alloc_preg (cfg);
5308         int realidx2_reg = alloc_preg (cfg);
5309         int sum_reg = alloc_preg (cfg);
5310         int index1, index2, tmpreg;
5311         MonoInst *ins;
5312         guint32 size;
5313
5314         mono_class_init (klass);
5315         size = mono_class_array_element_size (klass);
5316
5317         index1 = index_ins1->dreg;
5318         index2 = index_ins2->dreg;
5319
5320 #if SIZEOF_REGISTER == 8
5321         /* The array reg is 64 bits but the index reg is only 32 */
5322         if (COMPILE_LLVM (cfg)) {
5323                 /* Not needed */
5324         } else {
5325                 tmpreg = alloc_preg (cfg);
5326                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5327                 index1 = tmpreg;
5328                 tmpreg = alloc_preg (cfg);
5329                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5330                 index2 = tmpreg;
5331         }
5332 #else
5333         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5334         tmpreg = -1;
5335 #endif
5336
5337         /* range checking */
5338         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5339                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5340
5341         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5342                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5343         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5344         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5345                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5346         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5347         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5348
5349         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5350                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5351         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5352         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5353                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5354         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5355         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5356
5357         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5358         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5359         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5360         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5361         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5362
5363         ins->type = STACK_MP;
5364         ins->klass = klass;
5365         MONO_ADD_INS (cfg->cbb, ins);
5366
5367         return ins;
5368 }
5369 #endif
5370
5371 static MonoInst*
5372 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5373 {
5374         int rank;
5375         MonoInst *addr;
5376         MonoMethod *addr_method;
5377         int element_size;
5378         MonoClass *eclass = cmethod->klass->element_class;
5379
5380         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5381
5382         if (rank == 1)
5383                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5384
5385 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5386         /* emit_ldelema_2 depends on OP_LMUL */
5387         if (rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (cfg, eclass)) {
5388                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5389         }
5390 #endif
5391
5392         if (mini_is_gsharedvt_variable_klass (cfg, eclass))
5393                 element_size = 0;
5394         else
5395                 element_size = mono_class_array_element_size (eclass);
5396         addr_method = mono_marshal_get_array_address (rank, element_size);
5397         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5398
5399         return addr;
5400 }
5401
5402 static MonoBreakPolicy
5403 always_insert_breakpoint (MonoMethod *method)
5404 {
5405         return MONO_BREAK_POLICY_ALWAYS;
5406 }
5407
5408 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5409
5410 /**
5411  * mono_set_break_policy:
5412  * policy_callback: the new callback function
5413  *
5414  * Allow embedders to decide wherther to actually obey breakpoint instructions
5415  * (both break IL instructions and Debugger.Break () method calls), for example
5416  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5417  * untrusted or semi-trusted code.
5418  *
5419  * @policy_callback will be called every time a break point instruction needs to
5420  * be inserted with the method argument being the method that calls Debugger.Break()
5421  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5422  * if it wants the breakpoint to not be effective in the given method.
5423  * #MONO_BREAK_POLICY_ALWAYS is the default.
5424  */
5425 void
5426 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5427 {
5428         if (policy_callback)
5429                 break_policy_func = policy_callback;
5430         else
5431                 break_policy_func = always_insert_breakpoint;
5432 }
5433
5434 static gboolean
5435 should_insert_brekpoint (MonoMethod *method) {
5436         switch (break_policy_func (method)) {
5437         case MONO_BREAK_POLICY_ALWAYS:
5438                 return TRUE;
5439         case MONO_BREAK_POLICY_NEVER:
5440                 return FALSE;
5441         case MONO_BREAK_POLICY_ON_DBG:
5442                 g_warning ("mdb no longer supported");
5443                 return FALSE;
5444         default:
5445                 g_warning ("Incorrect value returned from break policy callback");
5446                 return FALSE;
5447         }
5448 }
5449
5450 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5451 static MonoInst*
5452 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5453 {
5454         MonoInst *addr, *store, *load;
5455         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5456
5457         /* the bounds check is already done by the callers */
5458         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5459         if (is_set) {
5460                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5461                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5462                 if (mini_type_is_reference (cfg, fsig->params [2]))
5463                         emit_write_barrier (cfg, addr, load);
5464         } else {
5465                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5466                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5467         }
5468         return store;
5469 }
5470
5471
5472 static gboolean
5473 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5474 {
5475         return mini_type_is_reference (cfg, &klass->byval_arg);
5476 }
5477
5478 static MonoInst*
5479 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5480 {
5481         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5482                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5483                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5484                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5485                 MonoInst *iargs [3];
5486
5487                 if (!helper->slot)
5488                         mono_class_setup_vtable (obj_array);
5489                 g_assert (helper->slot);
5490
5491                 if (sp [0]->type != STACK_OBJ)
5492                         return NULL;
5493                 if (sp [2]->type != STACK_OBJ)
5494                         return NULL;
5495
5496                 iargs [2] = sp [2];
5497                 iargs [1] = sp [1];
5498                 iargs [0] = sp [0];
5499
5500                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5501         } else {
5502                 MonoInst *ins;
5503
5504                 if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5505                         MonoInst *addr;
5506
5507                         // FIXME-VT: OP_ICONST optimization
5508                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5509                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5510                         ins->opcode = OP_STOREV_MEMBASE;
5511                 } else if (sp [1]->opcode == OP_ICONST) {
5512                         int array_reg = sp [0]->dreg;
5513                         int index_reg = sp [1]->dreg;
5514                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5515
5516                         if (safety_checks)
5517                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5518                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5519                 } else {
5520                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5521                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5522                         if (generic_class_is_reference_type (cfg, klass))
5523                                 emit_write_barrier (cfg, addr, sp [2]);
5524                 }
5525                 return ins;
5526         }
5527 }
5528
5529 static MonoInst*
5530 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5531 {
5532         MonoClass *eklass;
5533
5534         if (is_set)
5535                 eklass = mono_class_from_mono_type (fsig->params [2]);
5536         else
5537                 eklass = mono_class_from_mono_type (fsig->ret);
5538
5539         if (is_set) {
5540                 return emit_array_store (cfg, eklass, args, FALSE);
5541         } else {
5542                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5543                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5544                 return ins;
5545         }
5546 }
5547
5548 static gboolean
5549 is_unsafe_mov_compatible (MonoClass *param_klass, MonoClass *return_klass)
5550 {
5551         uint32_t align;
5552
5553         //Only allow for valuetypes
5554         if (!param_klass->valuetype || !return_klass->valuetype)
5555                 return FALSE;
5556
5557         //That are blitable
5558         if (param_klass->has_references || return_klass->has_references)
5559                 return FALSE;
5560
5561         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5562         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5563                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)))
5564                 return FALSE;
5565
5566         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5567                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8)
5568                 return FALSE;
5569
5570         //And have the same size
5571         if (mono_class_value_size (param_klass, &align) != mono_class_value_size (return_klass, &align))
5572                 return FALSE;
5573         return TRUE;
5574 }
5575
5576 static MonoInst*
5577 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5578 {
5579         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5580         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5581
5582         //Valuetypes that are semantically equivalent
5583         if (is_unsafe_mov_compatible (param_klass, return_klass))
5584                 return args [0];
5585
5586         //Arrays of valuetypes that are semantically equivalent
5587         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (param_klass->element_class, return_klass->element_class))
5588                 return args [0];
5589
5590         return NULL;
5591 }
5592
5593 static MonoInst*
5594 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5595 {
5596 #ifdef MONO_ARCH_SIMD_INTRINSICS
5597         MonoInst *ins = NULL;
5598
5599         if (cfg->opt & MONO_OPT_SIMD) {
5600                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5601                 if (ins)
5602                         return ins;
5603         }
5604 #endif
5605
5606         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5607 }
5608
5609 static MonoInst*
5610 emit_memory_barrier (MonoCompile *cfg, int kind)
5611 {
5612         MonoInst *ins = NULL;
5613         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5614         MONO_ADD_INS (cfg->cbb, ins);
5615         ins->backend.memory_barrier_kind = kind;
5616
5617         return ins;
5618 }
5619
5620 static MonoInst*
5621 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5622 {
5623         MonoInst *ins = NULL;
5624         int opcode = 0;
5625
5626         /* The LLVM backend supports these intrinsics */
5627         if (cmethod->klass == mono_defaults.math_class) {
5628                 if (strcmp (cmethod->name, "Sin") == 0) {
5629                         opcode = OP_SIN;
5630                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5631                         opcode = OP_COS;
5632                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5633                         opcode = OP_SQRT;
5634                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5635                         opcode = OP_ABS;
5636                 }
5637
5638                 if (opcode && fsig->param_count == 1) {
5639                         MONO_INST_NEW (cfg, ins, opcode);
5640                         ins->type = STACK_R8;
5641                         ins->dreg = mono_alloc_freg (cfg);
5642                         ins->sreg1 = args [0]->dreg;
5643                         MONO_ADD_INS (cfg->cbb, ins);
5644                 }
5645
5646                 opcode = 0;
5647                 if (cfg->opt & MONO_OPT_CMOV) {
5648                         if (strcmp (cmethod->name, "Min") == 0) {
5649                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5650                                         opcode = OP_IMIN;
5651                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5652                                         opcode = OP_IMIN_UN;
5653                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5654                                         opcode = OP_LMIN;
5655                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5656                                         opcode = OP_LMIN_UN;
5657                         } else if (strcmp (cmethod->name, "Max") == 0) {
5658                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5659                                         opcode = OP_IMAX;
5660                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5661                                         opcode = OP_IMAX_UN;
5662                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5663                                         opcode = OP_LMAX;
5664                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5665                                         opcode = OP_LMAX_UN;
5666                         }
5667                 }
5668
5669                 if (opcode && fsig->param_count == 2) {
5670                         MONO_INST_NEW (cfg, ins, opcode);
5671                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5672                         ins->dreg = mono_alloc_ireg (cfg);
5673                         ins->sreg1 = args [0]->dreg;
5674                         ins->sreg2 = args [1]->dreg;
5675                         MONO_ADD_INS (cfg->cbb, ins);
5676                 }
5677         }
5678
5679         return ins;
5680 }
5681
5682 static MonoInst*
5683 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5684 {
5685         if (cmethod->klass == mono_defaults.array_class) {
5686                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5687                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5688                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5689                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5690                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5691                         return emit_array_unsafe_mov (cfg, fsig, args);
5692         }
5693
5694         return NULL;
5695 }
5696
5697 static MonoInst*
5698 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5699 {
5700         MonoInst *ins = NULL;
5701
5702         static MonoClass *runtime_helpers_class = NULL;
5703         if (! runtime_helpers_class)
5704                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
5705                         "System.Runtime.CompilerServices", "RuntimeHelpers");
5706
5707         if (cmethod->klass == mono_defaults.string_class) {
5708                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5709                         int dreg = alloc_ireg (cfg);
5710                         int index_reg = alloc_preg (cfg);
5711                         int add_reg = alloc_preg (cfg);
5712
5713 #if SIZEOF_REGISTER == 8
5714                         /* The array reg is 64 bits but the index reg is only 32 */
5715                         MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5716 #else
5717                         index_reg = args [1]->dreg;
5718 #endif
5719                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5720
5721 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5722                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5723                         add_reg = ins->dreg;
5724                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5725                                                                    add_reg, 0);
5726 #else
5727                         int mult_reg = alloc_preg (cfg);
5728                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5729                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5730                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5731                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5732 #endif
5733                         type_from_op (cfg, ins, NULL, NULL);
5734                         return ins;
5735                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5736                         int dreg = alloc_ireg (cfg);
5737                         /* Decompose later to allow more optimizations */
5738                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5739                         ins->type = STACK_I4;
5740                         ins->flags |= MONO_INST_FAULT;
5741                         cfg->cbb->has_array_access = TRUE;
5742                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5743
5744                         return ins;
5745                 } else
5746                         return NULL;
5747         } else if (cmethod->klass == mono_defaults.object_class) {
5748
5749                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5750                         int dreg = alloc_ireg_ref (cfg);
5751                         int vt_reg = alloc_preg (cfg);
5752                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5753                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5754                         type_from_op (cfg, ins, NULL, NULL);
5755
5756                         return ins;
5757 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
5758                 } else if (strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5759                         int dreg = alloc_ireg (cfg);
5760                         int t1 = alloc_ireg (cfg);
5761
5762                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5763                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5764                         ins->type = STACK_I4;
5765
5766                         return ins;
5767 #endif
5768                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5769                         MONO_INST_NEW (cfg, ins, OP_NOP);
5770                         MONO_ADD_INS (cfg->cbb, ins);
5771                         return ins;
5772                 } else
5773                         return NULL;
5774         } else if (cmethod->klass == mono_defaults.array_class) {
5775                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5776                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5777                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5778                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5779
5780 #ifndef MONO_BIG_ARRAYS
5781                 /*
5782                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5783                  * Array methods.
5784                  */
5785                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5786                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5787                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5788                         int dreg = alloc_ireg (cfg);
5789                         int bounds_reg = alloc_ireg_mp (cfg);
5790                         MonoBasicBlock *end_bb, *szarray_bb;
5791                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5792
5793                         NEW_BBLOCK (cfg, end_bb);
5794                         NEW_BBLOCK (cfg, szarray_bb);
5795
5796                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5797                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5798                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5799                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5800                         /* Non-szarray case */
5801                         if (get_length)
5802                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5803                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5804                         else
5805                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5806                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5807                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5808                         MONO_START_BB (cfg, szarray_bb);
5809                         /* Szarray case */
5810                         if (get_length)
5811                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5812                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5813                         else
5814                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5815                         MONO_START_BB (cfg, end_bb);
5816
5817                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5818                         ins->type = STACK_I4;
5819
5820                         return ins;
5821                 }
5822 #endif
5823
5824                 if (cmethod->name [0] != 'g')
5825                         return NULL;
5826
5827                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5828                         int dreg = alloc_ireg (cfg);
5829                         int vtable_reg = alloc_preg (cfg);
5830                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5831                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5832                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5833                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5834                         type_from_op (cfg, ins, NULL, NULL);
5835
5836                         return ins;
5837                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5838                         int dreg = alloc_ireg (cfg);
5839
5840                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5841                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5842                         type_from_op (cfg, ins, NULL, NULL);
5843
5844                         return ins;
5845                 } else
5846                         return NULL;
5847         } else if (cmethod->klass == runtime_helpers_class) {
5848
5849                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5850                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5851                         return ins;
5852                 } else
5853                         return NULL;
5854         } else if (cmethod->klass == mono_defaults.thread_class) {
5855                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5856                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5857                         MONO_ADD_INS (cfg->cbb, ins);
5858                         return ins;
5859                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5860                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5861                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5862                         guint32 opcode = 0;
5863                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5864
5865                         if (fsig->params [0]->type == MONO_TYPE_I1)
5866                                 opcode = OP_LOADI1_MEMBASE;
5867                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5868                                 opcode = OP_LOADU1_MEMBASE;
5869                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5870                                 opcode = OP_LOADI2_MEMBASE;
5871                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5872                                 opcode = OP_LOADU2_MEMBASE;
5873                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5874                                 opcode = OP_LOADI4_MEMBASE;
5875                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5876                                 opcode = OP_LOADU4_MEMBASE;
5877                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5878                                 opcode = OP_LOADI8_MEMBASE;
5879                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5880                                 opcode = OP_LOADR4_MEMBASE;
5881                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5882                                 opcode = OP_LOADR8_MEMBASE;
5883                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5884                                 opcode = OP_LOAD_MEMBASE;
5885
5886                         if (opcode) {
5887                                 MONO_INST_NEW (cfg, ins, opcode);
5888                                 ins->inst_basereg = args [0]->dreg;
5889                                 ins->inst_offset = 0;
5890                                 MONO_ADD_INS (cfg->cbb, ins);
5891
5892                                 switch (fsig->params [0]->type) {
5893                                 case MONO_TYPE_I1:
5894                                 case MONO_TYPE_U1:
5895                                 case MONO_TYPE_I2:
5896                                 case MONO_TYPE_U2:
5897                                 case MONO_TYPE_I4:
5898                                 case MONO_TYPE_U4:
5899                                         ins->dreg = mono_alloc_ireg (cfg);
5900                                         ins->type = STACK_I4;
5901                                         break;
5902                                 case MONO_TYPE_I8:
5903                                 case MONO_TYPE_U8:
5904                                         ins->dreg = mono_alloc_lreg (cfg);
5905                                         ins->type = STACK_I8;
5906                                         break;
5907                                 case MONO_TYPE_I:
5908                                 case MONO_TYPE_U:
5909                                         ins->dreg = mono_alloc_ireg (cfg);
5910 #if SIZEOF_REGISTER == 8
5911                                         ins->type = STACK_I8;
5912 #else
5913                                         ins->type = STACK_I4;
5914 #endif
5915                                         break;
5916                                 case MONO_TYPE_R4:
5917                                 case MONO_TYPE_R8:
5918                                         ins->dreg = mono_alloc_freg (cfg);
5919                                         ins->type = STACK_R8;
5920                                         break;
5921                                 default:
5922                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
5923                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5924                                         ins->type = STACK_OBJ;
5925                                         break;
5926                                 }
5927
5928                                 if (opcode == OP_LOADI8_MEMBASE)
5929                                         ins = mono_decompose_opcode (cfg, ins, NULL);
5930
5931                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
5932
5933                                 return ins;
5934                         }
5935                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5936                         guint32 opcode = 0;
5937                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5938
5939                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5940                                 opcode = OP_STOREI1_MEMBASE_REG;
5941                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5942                                 opcode = OP_STOREI2_MEMBASE_REG;
5943                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5944                                 opcode = OP_STOREI4_MEMBASE_REG;
5945                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5946                                 opcode = OP_STOREI8_MEMBASE_REG;
5947                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5948                                 opcode = OP_STORER4_MEMBASE_REG;
5949                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5950                                 opcode = OP_STORER8_MEMBASE_REG;
5951                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5952                                 opcode = OP_STORE_MEMBASE_REG;
5953
5954                         if (opcode) {
5955                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
5956
5957                                 MONO_INST_NEW (cfg, ins, opcode);
5958                                 ins->sreg1 = args [1]->dreg;
5959                                 ins->inst_destbasereg = args [0]->dreg;
5960                                 ins->inst_offset = 0;
5961                                 MONO_ADD_INS (cfg->cbb, ins);
5962
5963                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5964                                         ins = mono_decompose_opcode (cfg, ins, NULL);
5965
5966                                 return ins;
5967                         }
5968                 }
5969         } else if (cmethod->klass == mono_defaults.monitor_class) {
5970 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
5971                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 1) {
5972                         MonoCallInst *call;
5973
5974                         if (COMPILE_LLVM (cfg)) {
5975                                 /*
5976                                  * Pass the argument normally, the LLVM backend will handle the
5977                                  * calling convention problems.
5978                                  */
5979                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5980                         } else {
5981                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER,
5982                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5983                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5984                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5985                         }
5986
5987                         return (MonoInst*)call;
5988 #if defined(MONO_ARCH_MONITOR_LOCK_TAKEN_REG)
5989                 } else if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) {
5990                         MonoCallInst *call;
5991
5992                         if (COMPILE_LLVM (cfg)) {
5993                                 /*
5994                                  * Pass the argument normally, the LLVM backend will handle the
5995                                  * calling convention problems.
5996                                  */
5997                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4, NULL, helper_sig_monitor_enter_v4_trampoline_llvm, args);
5998                         } else {
5999                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4,
6000                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
6001                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg, MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
6002                                 mono_call_inst_add_outarg_reg (cfg, call, args [1]->dreg, MONO_ARCH_MONITOR_LOCK_TAKEN_REG, FALSE);
6003                         }
6004
6005                         return (MonoInst*)call;
6006 #endif
6007                 } else if (strcmp (cmethod->name, "Exit") == 0 && fsig->param_count == 1) {
6008                         MonoCallInst *call;
6009
6010                         if (COMPILE_LLVM (cfg)) {
6011                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
6012                         } else {
6013                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT,
6014                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
6015                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
6016                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
6017                         }
6018
6019                         return (MonoInst*)call;
6020                 }
6021 #endif
6022         } else if (cmethod->klass->image == mono_defaults.corlib &&
6023                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6024                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6025                 ins = NULL;
6026
6027 #if SIZEOF_REGISTER == 8
6028                 if (strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6029                         if (mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6030                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6031                                 ins->dreg = mono_alloc_preg (cfg);
6032                                 ins->sreg1 = args [0]->dreg;
6033                                 ins->type = STACK_I8;
6034                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6035                                 MONO_ADD_INS (cfg->cbb, ins);
6036                         } else {
6037                                 MonoInst *load_ins;
6038
6039                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6040
6041                                 /* 64 bit reads are already atomic */
6042                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6043                                 load_ins->dreg = mono_alloc_preg (cfg);
6044                                 load_ins->inst_basereg = args [0]->dreg;
6045                                 load_ins->inst_offset = 0;
6046                                 load_ins->type = STACK_I8;
6047                                 MONO_ADD_INS (cfg->cbb, load_ins);
6048
6049                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6050
6051                                 ins = load_ins;
6052                         }
6053                 }
6054 #endif
6055
6056                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6057                         MonoInst *ins_iconst;
6058                         guint32 opcode = 0;
6059
6060                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6061                                 opcode = OP_ATOMIC_ADD_I4;
6062                                 cfg->has_atomic_add_i4 = TRUE;
6063                         }
6064 #if SIZEOF_REGISTER == 8
6065                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6066                                 opcode = OP_ATOMIC_ADD_I8;
6067 #endif
6068                         if (opcode) {
6069                                 if (!mono_arch_opcode_supported (opcode))
6070                                         return NULL;
6071                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6072                                 ins_iconst->inst_c0 = 1;
6073                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6074                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6075
6076                                 MONO_INST_NEW (cfg, ins, opcode);
6077                                 ins->dreg = mono_alloc_ireg (cfg);
6078                                 ins->inst_basereg = args [0]->dreg;
6079                                 ins->inst_offset = 0;
6080                                 ins->sreg2 = ins_iconst->dreg;
6081                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6082                                 MONO_ADD_INS (cfg->cbb, ins);
6083                         }
6084                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6085                         MonoInst *ins_iconst;
6086                         guint32 opcode = 0;
6087
6088                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6089                                 opcode = OP_ATOMIC_ADD_I4;
6090                                 cfg->has_atomic_add_i4 = TRUE;
6091                         }
6092 #if SIZEOF_REGISTER == 8
6093                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6094                                 opcode = OP_ATOMIC_ADD_I8;
6095 #endif
6096                         if (opcode) {
6097                                 if (!mono_arch_opcode_supported (opcode))
6098                                         return NULL;
6099                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6100                                 ins_iconst->inst_c0 = -1;
6101                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6102                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6103
6104                                 MONO_INST_NEW (cfg, ins, opcode);
6105                                 ins->dreg = mono_alloc_ireg (cfg);
6106                                 ins->inst_basereg = args [0]->dreg;
6107                                 ins->inst_offset = 0;
6108                                 ins->sreg2 = ins_iconst->dreg;
6109                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6110                                 MONO_ADD_INS (cfg->cbb, ins);
6111                         }
6112                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6113                         guint32 opcode = 0;
6114
6115                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6116                                 opcode = OP_ATOMIC_ADD_I4;
6117                                 cfg->has_atomic_add_i4 = TRUE;
6118                         }
6119 #if SIZEOF_REGISTER == 8
6120                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6121                                 opcode = OP_ATOMIC_ADD_I8;
6122 #endif
6123                         if (opcode) {
6124                                 if (!mono_arch_opcode_supported (opcode))
6125                                         return NULL;
6126                                 MONO_INST_NEW (cfg, ins, opcode);
6127                                 ins->dreg = mono_alloc_ireg (cfg);
6128                                 ins->inst_basereg = args [0]->dreg;
6129                                 ins->inst_offset = 0;
6130                                 ins->sreg2 = args [1]->dreg;
6131                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6132                                 MONO_ADD_INS (cfg->cbb, ins);
6133                         }
6134                 }
6135                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6136                         MonoInst *f2i = NULL, *i2f;
6137                         guint32 opcode, f2i_opcode, i2f_opcode;
6138                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6139                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6140
6141                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6142                             fsig->params [0]->type == MONO_TYPE_R4) {
6143                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6144                                 f2i_opcode = OP_MOVE_F_TO_I4;
6145                                 i2f_opcode = OP_MOVE_I4_TO_F;
6146                                 cfg->has_atomic_exchange_i4 = TRUE;
6147                         }
6148 #if SIZEOF_REGISTER == 8
6149                         else if (is_ref ||
6150                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6151                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6152                                  fsig->params [0]->type == MONO_TYPE_I) {
6153                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6154                                 f2i_opcode = OP_MOVE_F_TO_I8;
6155                                 i2f_opcode = OP_MOVE_I8_TO_F;
6156                         }
6157 #else
6158                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6159                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6160                                 cfg->has_atomic_exchange_i4 = TRUE;
6161                         }
6162 #endif
6163                         else
6164                                 return NULL;
6165
6166                         if (!mono_arch_opcode_supported (opcode))
6167                                 return NULL;
6168
6169                         if (is_float) {
6170                                 /* TODO: Decompose these opcodes instead of bailing here. */
6171                                 if (COMPILE_SOFT_FLOAT (cfg))
6172                                         return NULL;
6173
6174                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6175                                 f2i->dreg = mono_alloc_ireg (cfg);
6176                                 f2i->sreg1 = args [1]->dreg;
6177                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6178                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6179                                 MONO_ADD_INS (cfg->cbb, f2i);
6180                         }
6181
6182                         MONO_INST_NEW (cfg, ins, opcode);
6183                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6184                         ins->inst_basereg = args [0]->dreg;
6185                         ins->inst_offset = 0;
6186                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6187                         MONO_ADD_INS (cfg->cbb, ins);
6188
6189                         switch (fsig->params [0]->type) {
6190                         case MONO_TYPE_I4:
6191                                 ins->type = STACK_I4;
6192                                 break;
6193                         case MONO_TYPE_I8:
6194                                 ins->type = STACK_I8;
6195                                 break;
6196                         case MONO_TYPE_I:
6197 #if SIZEOF_REGISTER == 8
6198                                 ins->type = STACK_I8;
6199 #else
6200                                 ins->type = STACK_I4;
6201 #endif
6202                                 break;
6203                         case MONO_TYPE_R4:
6204                         case MONO_TYPE_R8:
6205                                 ins->type = STACK_R8;
6206                                 break;
6207                         default:
6208                                 g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6209                                 ins->type = STACK_OBJ;
6210                                 break;
6211                         }
6212
6213                         if (is_float) {
6214                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6215                                 i2f->dreg = mono_alloc_freg (cfg);
6216                                 i2f->sreg1 = ins->dreg;
6217                                 i2f->type = STACK_R8;
6218                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6219                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6220                                 MONO_ADD_INS (cfg->cbb, i2f);
6221
6222                                 ins = i2f;
6223                         }
6224
6225                         if (cfg->gen_write_barriers && is_ref)
6226                                 emit_write_barrier (cfg, args [0], args [1]);
6227                 }
6228                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6229                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6230                         guint32 opcode, f2i_opcode, i2f_opcode;
6231                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [1]);
6232                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6233
6234                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6235                             fsig->params [1]->type == MONO_TYPE_R4) {
6236                                 opcode = OP_ATOMIC_CAS_I4;
6237                                 f2i_opcode = OP_MOVE_F_TO_I4;
6238                                 i2f_opcode = OP_MOVE_I4_TO_F;
6239                                 cfg->has_atomic_cas_i4 = TRUE;
6240                         }
6241 #if SIZEOF_REGISTER == 8
6242                         else if (is_ref ||
6243                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6244                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6245                                  fsig->params [1]->type == MONO_TYPE_I) {
6246                                 opcode = OP_ATOMIC_CAS_I8;
6247                                 f2i_opcode = OP_MOVE_F_TO_I8;
6248                                 i2f_opcode = OP_MOVE_I8_TO_F;
6249                         }
6250 #else
6251                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6252                                 opcode = OP_ATOMIC_CAS_I4;
6253                                 cfg->has_atomic_cas_i4 = TRUE;
6254                         }
6255 #endif
6256                         else
6257                                 return NULL;
6258
6259                         if (!mono_arch_opcode_supported (opcode))
6260                                 return NULL;
6261
6262                         if (is_float) {
6263                                 /* TODO: Decompose these opcodes instead of bailing here. */
6264                                 if (COMPILE_SOFT_FLOAT (cfg))
6265                                         return NULL;
6266
6267                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6268                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6269                                 f2i_new->sreg1 = args [1]->dreg;
6270                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6271                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6272                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6273
6274                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6275                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6276                                 f2i_cmp->sreg1 = args [2]->dreg;
6277                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6278                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6279                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6280                         }
6281
6282                         MONO_INST_NEW (cfg, ins, opcode);
6283                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6284                         ins->sreg1 = args [0]->dreg;
6285                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6286                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6287                         MONO_ADD_INS (cfg->cbb, ins);
6288
6289                         switch (fsig->params [1]->type) {
6290                         case MONO_TYPE_I4:
6291                                 ins->type = STACK_I4;
6292                                 break;
6293                         case MONO_TYPE_I8:
6294                                 ins->type = STACK_I8;
6295                                 break;
6296                         case MONO_TYPE_I:
6297 #if SIZEOF_REGISTER == 8
6298                                 ins->type = STACK_I8;
6299 #else
6300                                 ins->type = STACK_I4;
6301 #endif
6302                                 break;
6303                         case MONO_TYPE_R4:
6304                         case MONO_TYPE_R8:
6305                                 ins->type = STACK_R8;
6306                                 break;
6307                         default:
6308                                 g_assert (mini_type_is_reference (cfg, fsig->params [1]));
6309                                 ins->type = STACK_OBJ;
6310                                 break;
6311                         }
6312
6313                         if (is_float) {
6314                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6315                                 i2f->dreg = mono_alloc_freg (cfg);
6316                                 i2f->sreg1 = ins->dreg;
6317                                 i2f->type = STACK_R8;
6318                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6319                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6320                                 MONO_ADD_INS (cfg->cbb, i2f);
6321
6322                                 ins = i2f;
6323                         }
6324
6325                         if (cfg->gen_write_barriers && is_ref)
6326                                 emit_write_barrier (cfg, args [0], args [1]);
6327                 }
6328                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6329                          fsig->params [1]->type == MONO_TYPE_I4) {
6330                         MonoInst *cmp, *ceq;
6331
6332                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6333                                 return NULL;
6334
6335                         /* int32 r = CAS (location, value, comparand); */
6336                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6337                         ins->dreg = alloc_ireg (cfg);
6338                         ins->sreg1 = args [0]->dreg;
6339                         ins->sreg2 = args [1]->dreg;
6340                         ins->sreg3 = args [2]->dreg;
6341                         ins->type = STACK_I4;
6342                         MONO_ADD_INS (cfg->cbb, ins);
6343
6344                         /* bool result = r == comparand; */
6345                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6346                         cmp->sreg1 = ins->dreg;
6347                         cmp->sreg2 = args [2]->dreg;
6348                         cmp->type = STACK_I4;
6349                         MONO_ADD_INS (cfg->cbb, cmp);
6350
6351                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6352                         ceq->dreg = alloc_ireg (cfg);
6353                         ceq->type = STACK_I4;
6354                         MONO_ADD_INS (cfg->cbb, ceq);
6355
6356                         /* *success = result; */
6357                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6358
6359                         cfg->has_atomic_cas_i4 = TRUE;
6360                 }
6361                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6362                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6363
6364                 if (ins)
6365                         return ins;
6366         } else if (cmethod->klass->image == mono_defaults.corlib &&
6367                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6368                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6369                 ins = NULL;
6370
6371                 if (!strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6372                         guint32 opcode = 0;
6373                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6374                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6375
6376                         if (fsig->params [0]->type == MONO_TYPE_I1)
6377                                 opcode = OP_ATOMIC_LOAD_I1;
6378                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6379                                 opcode = OP_ATOMIC_LOAD_U1;
6380                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6381                                 opcode = OP_ATOMIC_LOAD_I2;
6382                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6383                                 opcode = OP_ATOMIC_LOAD_U2;
6384                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6385                                 opcode = OP_ATOMIC_LOAD_I4;
6386                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6387                                 opcode = OP_ATOMIC_LOAD_U4;
6388                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6389                                 opcode = OP_ATOMIC_LOAD_R4;
6390                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6391                                 opcode = OP_ATOMIC_LOAD_R8;
6392 #if SIZEOF_REGISTER == 8
6393                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6394                                 opcode = OP_ATOMIC_LOAD_I8;
6395                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6396                                 opcode = OP_ATOMIC_LOAD_U8;
6397 #else
6398                         else if (fsig->params [0]->type == MONO_TYPE_I)
6399                                 opcode = OP_ATOMIC_LOAD_I4;
6400                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6401                                 opcode = OP_ATOMIC_LOAD_U4;
6402 #endif
6403
6404                         if (opcode) {
6405                                 if (!mono_arch_opcode_supported (opcode))
6406                                         return NULL;
6407
6408                                 MONO_INST_NEW (cfg, ins, opcode);
6409                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6410                                 ins->sreg1 = args [0]->dreg;
6411                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6412                                 MONO_ADD_INS (cfg->cbb, ins);
6413
6414                                 switch (fsig->params [0]->type) {
6415                                 case MONO_TYPE_BOOLEAN:
6416                                 case MONO_TYPE_I1:
6417                                 case MONO_TYPE_U1:
6418                                 case MONO_TYPE_I2:
6419                                 case MONO_TYPE_U2:
6420                                 case MONO_TYPE_I4:
6421                                 case MONO_TYPE_U4:
6422                                         ins->type = STACK_I4;
6423                                         break;
6424                                 case MONO_TYPE_I8:
6425                                 case MONO_TYPE_U8:
6426                                         ins->type = STACK_I8;
6427                                         break;
6428                                 case MONO_TYPE_I:
6429                                 case MONO_TYPE_U:
6430 #if SIZEOF_REGISTER == 8
6431                                         ins->type = STACK_I8;
6432 #else
6433                                         ins->type = STACK_I4;
6434 #endif
6435                                         break;
6436                                 case MONO_TYPE_R4:
6437                                 case MONO_TYPE_R8:
6438                                         ins->type = STACK_R8;
6439                                         break;
6440                                 default:
6441                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6442                                         ins->type = STACK_OBJ;
6443                                         break;
6444                                 }
6445                         }
6446                 }
6447
6448                 if (!strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6449                         guint32 opcode = 0;
6450                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6451
6452                         if (fsig->params [0]->type == MONO_TYPE_I1)
6453                                 opcode = OP_ATOMIC_STORE_I1;
6454                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6455                                 opcode = OP_ATOMIC_STORE_U1;
6456                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6457                                 opcode = OP_ATOMIC_STORE_I2;
6458                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6459                                 opcode = OP_ATOMIC_STORE_U2;
6460                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6461                                 opcode = OP_ATOMIC_STORE_I4;
6462                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6463                                 opcode = OP_ATOMIC_STORE_U4;
6464                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6465                                 opcode = OP_ATOMIC_STORE_R4;
6466                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6467                                 opcode = OP_ATOMIC_STORE_R8;
6468 #if SIZEOF_REGISTER == 8
6469                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6470                                 opcode = OP_ATOMIC_STORE_I8;
6471                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6472                                 opcode = OP_ATOMIC_STORE_U8;
6473 #else
6474                         else if (fsig->params [0]->type == MONO_TYPE_I)
6475                                 opcode = OP_ATOMIC_STORE_I4;
6476                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6477                                 opcode = OP_ATOMIC_STORE_U4;
6478 #endif
6479
6480                         if (opcode) {
6481                                 if (!mono_arch_opcode_supported (opcode))
6482                                         return NULL;
6483
6484                                 MONO_INST_NEW (cfg, ins, opcode);
6485                                 ins->dreg = args [0]->dreg;
6486                                 ins->sreg1 = args [1]->dreg;
6487                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6488                                 MONO_ADD_INS (cfg->cbb, ins);
6489
6490                                 if (cfg->gen_write_barriers && is_ref)
6491                                         emit_write_barrier (cfg, args [0], args [1]);
6492                         }
6493                 }
6494
6495                 if (ins)
6496                         return ins;
6497         } else if (cmethod->klass->image == mono_defaults.corlib &&
6498                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6499                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6500                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6501                         if (should_insert_brekpoint (cfg->method)) {
6502                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6503                         } else {
6504                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6505                                 MONO_ADD_INS (cfg->cbb, ins);
6506                         }
6507                         return ins;
6508                 }
6509         } else if (cmethod->klass->image == mono_defaults.corlib &&
6510                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6511                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6512                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6513 #ifdef TARGET_WIN32
6514                         EMIT_NEW_ICONST (cfg, ins, 1);
6515 #else
6516                         EMIT_NEW_ICONST (cfg, ins, 0);
6517 #endif
6518                 }
6519         } else if (cmethod->klass == mono_defaults.math_class) {
6520                 /*
6521                  * There is general branchless code for Min/Max, but it does not work for
6522                  * all inputs:
6523                  * http://everything2.com/?node_id=1051618
6524                  */
6525         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6526                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6527                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6528                                 !strcmp (cmethod->klass->name, "Selector")) ||
6529                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6530                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6531                                 !strcmp (cmethod->klass->name, "Selector"))
6532                            ) {
6533 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
6534                 if (!strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6535                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6536                     cfg->compile_aot) {
6537                         MonoInst *pi;
6538                         MonoJumpInfoToken *ji;
6539                         MonoString *s;
6540
6541                         cfg->disable_llvm = TRUE;
6542
6543                         if (args [0]->opcode == OP_GOT_ENTRY) {
6544                                 pi = args [0]->inst_p1;
6545                                 g_assert (pi->opcode == OP_PATCH_INFO);
6546                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6547                                 ji = pi->inst_p0;
6548                         } else {
6549                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6550                                 ji = args [0]->inst_p0;
6551                         }
6552
6553                         NULLIFY_INS (args [0]);
6554
6555                         // FIXME: Ugly
6556                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6557                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6558                         ins->dreg = mono_alloc_ireg (cfg);
6559                         // FIXME: Leaks
6560                         ins->inst_p0 = mono_string_to_utf8 (s);
6561                         MONO_ADD_INS (cfg->cbb, ins);
6562                         return ins;
6563                 }
6564 #endif
6565         }
6566
6567 #ifdef MONO_ARCH_SIMD_INTRINSICS
6568         if (cfg->opt & MONO_OPT_SIMD) {
6569                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6570                 if (ins)
6571                         return ins;
6572         }
6573 #endif
6574
6575         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6576         if (ins)
6577                 return ins;
6578
6579         if (COMPILE_LLVM (cfg)) {
6580                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6581                 if (ins)
6582                         return ins;
6583         }
6584
6585         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6586 }
6587
6588 /*
6589  * This entry point could be used later for arbitrary method
6590  * redirection.
6591  */
6592 inline static MonoInst*
6593 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6594                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this)
6595 {
6596         if (method->klass == mono_defaults.string_class) {
6597                 /* managed string allocation support */
6598                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6599                         MonoInst *iargs [2];
6600                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6601                         MonoMethod *managed_alloc = NULL;
6602
6603                         g_assert (vtable); /*Should not fail since it System.String*/
6604 #ifndef MONO_CROSS_COMPILE
6605                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6606 #endif
6607                         if (!managed_alloc)
6608                                 return NULL;
6609                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6610                         iargs [1] = args [0];
6611                         return mono_emit_method_call (cfg, managed_alloc, iargs, this);
6612                 }
6613         }
6614         return NULL;
6615 }
6616
6617 static void
6618 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6619 {
6620         MonoInst *store, *temp;
6621         int i;
6622
6623         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6624                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6625
6626                 /*
6627                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6628                  * would be different than the MonoInst's used to represent arguments, and
6629                  * the ldelema implementation can't deal with that.
6630                  * Solution: When ldelema is used on an inline argument, create a var for
6631                  * it, emit ldelema on that var, and emit the saving code below in
6632                  * inline_method () if needed.
6633                  */
6634                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6635                 cfg->args [i] = temp;
6636                 /* This uses cfg->args [i] which is set by the preceeding line */
6637                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6638                 store->cil_code = sp [0]->cil_code;
6639                 sp++;
6640         }
6641 }
6642
6643 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6644 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6645
6646 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6647 static gboolean
6648 check_inline_called_method_name_limit (MonoMethod *called_method)
6649 {
6650         int strncmp_result;
6651         static const char *limit = NULL;
6652
6653         if (limit == NULL) {
6654                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6655
6656                 if (limit_string != NULL)
6657                         limit = limit_string;
6658                 else
6659                         limit = "";
6660         }
6661
6662         if (limit [0] != '\0') {
6663                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6664
6665                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6666                 g_free (called_method_name);
6667
6668                 //return (strncmp_result <= 0);
6669                 return (strncmp_result == 0);
6670         } else {
6671                 return TRUE;
6672         }
6673 }
6674 #endif
6675
6676 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6677 static gboolean
6678 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6679 {
6680         int strncmp_result;
6681         static const char *limit = NULL;
6682
6683         if (limit == NULL) {
6684                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6685                 if (limit_string != NULL) {
6686                         limit = limit_string;
6687                 } else {
6688                         limit = "";
6689                 }
6690         }
6691
6692         if (limit [0] != '\0') {
6693                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6694
6695                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6696                 g_free (caller_method_name);
6697
6698                 //return (strncmp_result <= 0);
6699                 return (strncmp_result == 0);
6700         } else {
6701                 return TRUE;
6702         }
6703 }
6704 #endif
6705
6706 static void
6707 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6708 {
6709         static double r8_0 = 0.0;
6710         static float r4_0 = 0.0;
6711         MonoInst *ins;
6712         int t;
6713
6714         rtype = mini_get_underlying_type (cfg, rtype);
6715         t = rtype->type;
6716
6717         if (rtype->byref) {
6718                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6719         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6720                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6721         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6722                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6723         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6724                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6725                 ins->type = STACK_R4;
6726                 ins->inst_p0 = (void*)&r4_0;
6727                 ins->dreg = dreg;
6728                 MONO_ADD_INS (cfg->cbb, ins);
6729         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6730                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6731                 ins->type = STACK_R8;
6732                 ins->inst_p0 = (void*)&r8_0;
6733                 ins->dreg = dreg;
6734                 MONO_ADD_INS (cfg->cbb, ins);
6735         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6736                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6737                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6738         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6739                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6740         } else {
6741                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6742         }
6743 }
6744
6745 static void
6746 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6747 {
6748         int t;
6749
6750         rtype = mini_get_underlying_type (cfg, rtype);
6751         t = rtype->type;
6752
6753         if (rtype->byref) {
6754                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6755         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6756                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6757         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6758                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6759         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6760                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6761         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6762                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6763         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6764                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6765                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6766         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6767                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6768         } else {
6769                 emit_init_rvar (cfg, dreg, rtype);
6770         }
6771 }
6772
6773 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6774 static void
6775 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6776 {
6777         MonoInst *var = cfg->locals [local];
6778         if (COMPILE_SOFT_FLOAT (cfg)) {
6779                 MonoInst *store;
6780                 int reg = alloc_dreg (cfg, var->type);
6781                 emit_init_rvar (cfg, reg, type);
6782                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6783         } else {
6784                 if (init)
6785                         emit_init_rvar (cfg, var->dreg, type);
6786                 else
6787                         emit_dummy_init_rvar (cfg, var->dreg, type);
6788         }
6789 }
6790
6791 /*
6792  * inline_method:
6793  *
6794  *   Return the cost of inlining CMETHOD.
6795  */
6796 static int
6797 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6798                            guchar *ip, guint real_offset, gboolean inline_always, MonoBasicBlock **out_cbb)
6799 {
6800         MonoInst *ins, *rvar = NULL;
6801         MonoMethodHeader *cheader;
6802         MonoBasicBlock *ebblock, *sbblock;
6803         int i, costs;
6804         MonoMethod *prev_inlined_method;
6805         MonoInst **prev_locals, **prev_args;
6806         MonoType **prev_arg_types;
6807         guint prev_real_offset;
6808         GHashTable *prev_cbb_hash;
6809         MonoBasicBlock **prev_cil_offset_to_bb;
6810         MonoBasicBlock *prev_cbb;
6811         unsigned char* prev_cil_start;
6812         guint32 prev_cil_offset_to_bb_len;
6813         MonoMethod *prev_current_method;
6814         MonoGenericContext *prev_generic_context;
6815         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual = FALSE;
6816
6817         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6818
6819 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6820         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6821                 return 0;
6822 #endif
6823 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6824         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6825                 return 0;
6826 #endif
6827
6828         if (!fsig)
6829                 fsig = mono_method_signature (cmethod);
6830
6831         if (cfg->verbose_level > 2)
6832                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6833
6834         if (!cmethod->inline_info) {
6835                 cfg->stat_inlineable_methods++;
6836                 cmethod->inline_info = 1;
6837         }
6838
6839         /* allocate local variables */
6840         cheader = mono_method_get_header (cmethod);
6841
6842         if (cheader == NULL || mono_loader_get_last_error ()) {
6843                 MonoLoaderError *error = mono_loader_get_last_error ();
6844
6845                 if (cheader)
6846                         mono_metadata_free_mh (cheader);
6847                 if (inline_always && error)
6848                         mono_cfg_set_exception (cfg, error->exception_type);
6849
6850                 mono_loader_clear_error ();
6851                 return 0;
6852         }
6853
6854         /*Must verify before creating locals as it can cause the JIT to assert.*/
6855         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6856                 mono_metadata_free_mh (cheader);
6857                 return 0;
6858         }
6859
6860         /* allocate space to store the return value */
6861         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6862                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6863         }
6864
6865         prev_locals = cfg->locals;
6866         cfg->locals = mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6867         for (i = 0; i < cheader->num_locals; ++i)
6868                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6869
6870         /* allocate start and end blocks */
6871         /* This is needed so if the inline is aborted, we can clean up */
6872         NEW_BBLOCK (cfg, sbblock);
6873         sbblock->real_offset = real_offset;
6874
6875         NEW_BBLOCK (cfg, ebblock);
6876         ebblock->block_num = cfg->num_bblocks++;
6877         ebblock->real_offset = real_offset;
6878
6879         prev_args = cfg->args;
6880         prev_arg_types = cfg->arg_types;
6881         prev_inlined_method = cfg->inlined_method;
6882         cfg->inlined_method = cmethod;
6883         cfg->ret_var_set = FALSE;
6884         cfg->inline_depth ++;
6885         prev_real_offset = cfg->real_offset;
6886         prev_cbb_hash = cfg->cbb_hash;
6887         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6888         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6889         prev_cil_start = cfg->cil_start;
6890         prev_cbb = cfg->cbb;
6891         prev_current_method = cfg->current_method;
6892         prev_generic_context = cfg->generic_context;
6893         prev_ret_var_set = cfg->ret_var_set;
6894         prev_disable_inline = cfg->disable_inline;
6895
6896         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6897                 virtual = TRUE;
6898
6899         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual);
6900
6901         ret_var_set = cfg->ret_var_set;
6902
6903         cfg->inlined_method = prev_inlined_method;
6904         cfg->real_offset = prev_real_offset;
6905         cfg->cbb_hash = prev_cbb_hash;
6906         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6907         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6908         cfg->cil_start = prev_cil_start;
6909         cfg->locals = prev_locals;
6910         cfg->args = prev_args;
6911         cfg->arg_types = prev_arg_types;
6912         cfg->current_method = prev_current_method;
6913         cfg->generic_context = prev_generic_context;
6914         cfg->ret_var_set = prev_ret_var_set;
6915         cfg->disable_inline = prev_disable_inline;
6916         cfg->inline_depth --;
6917
6918         if ((costs >= 0 && costs < 60) || inline_always) {
6919                 if (cfg->verbose_level > 2)
6920                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6921
6922                 cfg->stat_inlined_methods++;
6923
6924                 /* always add some code to avoid block split failures */
6925                 MONO_INST_NEW (cfg, ins, OP_NOP);
6926                 MONO_ADD_INS (prev_cbb, ins);
6927
6928                 prev_cbb->next_bb = sbblock;
6929                 link_bblock (cfg, prev_cbb, sbblock);
6930
6931                 /*
6932                  * Get rid of the begin and end bblocks if possible to aid local
6933                  * optimizations.
6934                  */
6935                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6936
6937                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6938                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6939
6940                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6941                         MonoBasicBlock *prev = ebblock->in_bb [0];
6942                         mono_merge_basic_blocks (cfg, prev, ebblock);
6943                         cfg->cbb = prev;
6944                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6945                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
6946                                 cfg->cbb = prev_cbb;
6947                         }
6948                 } else {
6949                         /*
6950                          * Its possible that the rvar is set in some prev bblock, but not in others.
6951                          * (#1835).
6952                          */
6953                         if (rvar) {
6954                                 MonoBasicBlock *bb;
6955
6956                                 for (i = 0; i < ebblock->in_count; ++i) {
6957                                         bb = ebblock->in_bb [i];
6958
6959                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6960                                                 cfg->cbb = bb;
6961
6962                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6963                                         }
6964                                 }
6965                         }
6966
6967                         cfg->cbb = ebblock;
6968                 }
6969
6970                 if (out_cbb)
6971                         *out_cbb = cfg->cbb;
6972
6973                 if (rvar) {
6974                         /*
6975                          * If the inlined method contains only a throw, then the ret var is not
6976                          * set, so set it to a dummy value.
6977                          */
6978                         if (!ret_var_set)
6979                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6980
6981                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6982                         *sp++ = ins;
6983                 }
6984                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6985                 return costs + 1;
6986         } else {
6987                 if (cfg->verbose_level > 2)
6988                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6989                 cfg->exception_type = MONO_EXCEPTION_NONE;
6990                 mono_loader_clear_error ();
6991
6992                 /* This gets rid of the newly added bblocks */
6993                 cfg->cbb = prev_cbb;
6994         }
6995         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6996         return 0;
6997 }
6998
6999 /*
7000  * Some of these comments may well be out-of-date.
7001  * Design decisions: we do a single pass over the IL code (and we do bblock
7002  * splitting/merging in the few cases when it's required: a back jump to an IL
7003  * address that was not already seen as bblock starting point).
7004  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7005  * Complex operations are decomposed in simpler ones right away. We need to let the
7006  * arch-specific code peek and poke inside this process somehow (except when the
7007  * optimizations can take advantage of the full semantic info of coarse opcodes).
7008  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7009  * MonoInst->opcode initially is the IL opcode or some simplification of that
7010  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7011  * opcode with value bigger than OP_LAST.
7012  * At this point the IR can be handed over to an interpreter, a dumb code generator
7013  * or to the optimizing code generator that will translate it to SSA form.
7014  *
7015  * Profiling directed optimizations.
7016  * We may compile by default with few or no optimizations and instrument the code
7017  * or the user may indicate what methods to optimize the most either in a config file
7018  * or through repeated runs where the compiler applies offline the optimizations to
7019  * each method and then decides if it was worth it.
7020  */
7021
7022 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7023 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7024 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7025 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7026 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7027 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7028 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7029 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) TYPE_LOAD_ERROR ((klass))
7030
7031 /* offset from br.s -> br like opcodes */
7032 #define BIG_BRANCH_OFFSET 13
7033
7034 static gboolean
7035 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7036 {
7037         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7038
7039         return b == NULL || b == bb;
7040 }
7041
7042 static int
7043 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7044 {
7045         unsigned char *ip = start;
7046         unsigned char *target;
7047         int i;
7048         guint cli_addr;
7049         MonoBasicBlock *bblock;
7050         const MonoOpcode *opcode;
7051
7052         while (ip < end) {
7053                 cli_addr = ip - start;
7054                 i = mono_opcode_value ((const guint8 **)&ip, end);
7055                 if (i < 0)
7056                         UNVERIFIED;
7057                 opcode = &mono_opcodes [i];
7058                 switch (opcode->argument) {
7059                 case MonoInlineNone:
7060                         ip++;
7061                         break;
7062                 case MonoInlineString:
7063                 case MonoInlineType:
7064                 case MonoInlineField:
7065                 case MonoInlineMethod:
7066                 case MonoInlineTok:
7067                 case MonoInlineSig:
7068                 case MonoShortInlineR:
7069                 case MonoInlineI:
7070                         ip += 5;
7071                         break;
7072                 case MonoInlineVar:
7073                         ip += 3;
7074                         break;
7075                 case MonoShortInlineVar:
7076                 case MonoShortInlineI:
7077                         ip += 2;
7078                         break;
7079                 case MonoShortInlineBrTarget:
7080                         target = start + cli_addr + 2 + (signed char)ip [1];
7081                         GET_BBLOCK (cfg, bblock, target);
7082                         ip += 2;
7083                         if (ip < end)
7084                                 GET_BBLOCK (cfg, bblock, ip);
7085                         break;
7086                 case MonoInlineBrTarget:
7087                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7088                         GET_BBLOCK (cfg, bblock, target);
7089                         ip += 5;
7090                         if (ip < end)
7091                                 GET_BBLOCK (cfg, bblock, ip);
7092                         break;
7093                 case MonoInlineSwitch: {
7094                         guint32 n = read32 (ip + 1);
7095                         guint32 j;
7096                         ip += 5;
7097                         cli_addr += 5 + 4 * n;
7098                         target = start + cli_addr;
7099                         GET_BBLOCK (cfg, bblock, target);
7100
7101                         for (j = 0; j < n; ++j) {
7102                                 target = start + cli_addr + (gint32)read32 (ip);
7103                                 GET_BBLOCK (cfg, bblock, target);
7104                                 ip += 4;
7105                         }
7106                         break;
7107                 }
7108                 case MonoInlineR:
7109                 case MonoInlineI8:
7110                         ip += 9;
7111                         break;
7112                 default:
7113                         g_assert_not_reached ();
7114                 }
7115
7116                 if (i == CEE_THROW) {
7117                         unsigned char *bb_start = ip - 1;
7118
7119                         /* Find the start of the bblock containing the throw */
7120                         bblock = NULL;
7121                         while ((bb_start >= start) && !bblock) {
7122                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7123                                 bb_start --;
7124                         }
7125                         if (bblock)
7126                                 bblock->out_of_line = 1;
7127                 }
7128         }
7129         return 0;
7130 unverified:
7131 exception_exit:
7132         *pos = ip;
7133         return 1;
7134 }
7135
7136 static inline MonoMethod *
7137 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7138 {
7139         MonoMethod *method;
7140
7141         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7142                 method = mono_method_get_wrapper_data (m, token);
7143                 if (context) {
7144                         MonoError error;
7145                         method = mono_class_inflate_generic_method_checked (method, context, &error);
7146                         g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
7147                 }
7148         } else {
7149                 method = mono_get_method_full (m->klass->image, token, klass, context);
7150         }
7151
7152         return method;
7153 }
7154
7155 static inline MonoMethod *
7156 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7157 {
7158         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
7159
7160         if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
7161                 return NULL;
7162
7163         return method;
7164 }
7165
7166 static inline MonoClass*
7167 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7168 {
7169         MonoError error;
7170         MonoClass *klass;
7171
7172         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7173                 klass = mono_method_get_wrapper_data (method, token);
7174                 if (context)
7175                         klass = mono_class_inflate_generic_class (klass, context);
7176         } else {
7177                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7178                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7179         }
7180         if (klass)
7181                 mono_class_init (klass);
7182         return klass;
7183 }
7184
7185 static inline MonoMethodSignature*
7186 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7187 {
7188         MonoMethodSignature *fsig;
7189
7190         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7191                 MonoError error;
7192
7193                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7194                 if (context) {
7195                         fsig = mono_inflate_generic_signature (fsig, context, &error);
7196                         // FIXME:
7197                         g_assert (mono_error_ok (&error));
7198                 }
7199         } else {
7200                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7201         }
7202         return fsig;
7203 }
7204
7205 static MonoMethod*
7206 throw_exception (void)
7207 {
7208         static MonoMethod *method = NULL;
7209
7210         if (!method) {
7211                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7212                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7213         }
7214         g_assert (method);
7215         return method;
7216 }
7217
7218 static void
7219 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7220 {
7221         MonoMethod *thrower = throw_exception ();
7222         MonoInst *args [1];
7223
7224         EMIT_NEW_PCONST (cfg, args [0], ex);
7225         mono_emit_method_call (cfg, thrower, args, NULL);
7226 }
7227
7228 /*
7229  * Return the original method is a wrapper is specified. We can only access
7230  * the custom attributes from the original method.
7231  */
7232 static MonoMethod*
7233 get_original_method (MonoMethod *method)
7234 {
7235         if (method->wrapper_type == MONO_WRAPPER_NONE)
7236                 return method;
7237
7238         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7239         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7240                 return NULL;
7241
7242         /* in other cases we need to find the original method */
7243         return mono_marshal_method_from_wrapper (method);
7244 }
7245
7246 static void
7247 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
7248                                           MonoBasicBlock *bblock, unsigned char *ip)
7249 {
7250         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7251         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7252         if (ex)
7253                 emit_throw_exception (cfg, ex);
7254 }
7255
7256 static void
7257 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
7258                                          MonoBasicBlock *bblock, unsigned char *ip)
7259 {
7260         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7261         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7262         if (ex)
7263                 emit_throw_exception (cfg, ex);
7264 }
7265
7266 /*
7267  * Check that the IL instructions at ip are the array initialization
7268  * sequence and return the pointer to the data and the size.
7269  */
7270 static const char*
7271 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7272 {
7273         /*
7274          * newarr[System.Int32]
7275          * dup
7276          * ldtoken field valuetype ...
7277          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7278          */
7279         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7280                 MonoError error;
7281                 guint32 token = read32 (ip + 7);
7282                 guint32 field_token = read32 (ip + 2);
7283                 guint32 field_index = field_token & 0xffffff;
7284                 guint32 rva;
7285                 const char *data_ptr;
7286                 int size = 0;
7287                 MonoMethod *cmethod;
7288                 MonoClass *dummy_class;
7289                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7290                 int dummy_align;
7291
7292                 if (!field) {
7293                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7294                         return NULL;
7295                 }
7296
7297                 *out_field_token = field_token;
7298
7299                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7300                 if (!cmethod)
7301                         return NULL;
7302                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7303                         return NULL;
7304                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7305                 case MONO_TYPE_BOOLEAN:
7306                 case MONO_TYPE_I1:
7307                 case MONO_TYPE_U1:
7308                         size = 1; break;
7309                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7310 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7311                 case MONO_TYPE_CHAR:
7312                 case MONO_TYPE_I2:
7313                 case MONO_TYPE_U2:
7314                         size = 2; break;
7315                 case MONO_TYPE_I4:
7316                 case MONO_TYPE_U4:
7317                 case MONO_TYPE_R4:
7318                         size = 4; break;
7319                 case MONO_TYPE_R8:
7320                 case MONO_TYPE_I8:
7321                 case MONO_TYPE_U8:
7322                         size = 8; break;
7323 #endif
7324                 default:
7325                         return NULL;
7326                 }
7327                 size *= len;
7328                 if (size > mono_type_size (field->type, &dummy_align))
7329                     return NULL;
7330                 *out_size = size;
7331                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7332                 if (!image_is_dynamic (method->klass->image)) {
7333                         field_index = read32 (ip + 2) & 0xffffff;
7334                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7335                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7336                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7337                         /* for aot code we do the lookup on load */
7338                         if (aot && data_ptr)
7339                                 return GUINT_TO_POINTER (rva);
7340                 } else {
7341                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7342                         g_assert (!aot);
7343                         data_ptr = mono_field_get_data (field);
7344                 }
7345                 return data_ptr;
7346         }
7347         return NULL;
7348 }
7349
7350 static void
7351 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7352 {
7353         char *method_fname = mono_method_full_name (method, TRUE);
7354         char *method_code;
7355         MonoMethodHeader *header = mono_method_get_header (method);
7356
7357         if (header->code_size == 0)
7358                 method_code = g_strdup ("method body is empty.");
7359         else
7360                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7361         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7362         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
7363         g_free (method_fname);
7364         g_free (method_code);
7365         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7366 }
7367
7368 static void
7369 set_exception_object (MonoCompile *cfg, MonoException *exception)
7370 {
7371         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
7372         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr);
7373         cfg->exception_ptr = exception;
7374 }
7375
7376 static void
7377 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7378 {
7379         MonoInst *ins;
7380         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7381         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7382                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7383                 /* Optimize reg-reg moves away */
7384                 /*
7385                  * Can't optimize other opcodes, since sp[0] might point to
7386                  * the last ins of a decomposed opcode.
7387                  */
7388                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7389         } else {
7390                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7391         }
7392 }
7393
7394 /*
7395  * ldloca inhibits many optimizations so try to get rid of it in common
7396  * cases.
7397  */
7398 static inline unsigned char *
7399 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7400 {
7401         int local, token;
7402         MonoClass *klass;
7403         MonoType *type;
7404
7405         if (size == 1) {
7406                 local = ip [1];
7407                 ip += 2;
7408         } else {
7409                 local = read16 (ip + 2);
7410                 ip += 4;
7411         }
7412
7413         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7414                 /* From the INITOBJ case */
7415                 token = read32 (ip + 2);
7416                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7417                 CHECK_TYPELOAD (klass);
7418                 type = mini_get_underlying_type (cfg, &klass->byval_arg);
7419                 emit_init_local (cfg, local, type, TRUE);
7420                 return ip + 6;
7421         }
7422  exception_exit:
7423         return NULL;
7424 }
7425
7426 static gboolean
7427 is_exception_class (MonoClass *class)
7428 {
7429         while (class) {
7430                 if (class == mono_defaults.exception_class)
7431                         return TRUE;
7432                 class = class->parent;
7433         }
7434         return FALSE;
7435 }
7436
7437 /*
7438  * is_jit_optimizer_disabled:
7439  *
7440  *   Determine whenever M's assembly has a DebuggableAttribute with the
7441  * IsJITOptimizerDisabled flag set.
7442  */
7443 static gboolean
7444 is_jit_optimizer_disabled (MonoMethod *m)
7445 {
7446         MonoAssembly *ass = m->klass->image->assembly;
7447         MonoCustomAttrInfo* attrs;
7448         static MonoClass *klass;
7449         int i;
7450         gboolean val = FALSE;
7451
7452         g_assert (ass);
7453         if (ass->jit_optimizer_disabled_inited)
7454                 return ass->jit_optimizer_disabled;
7455
7456         if (!klass)
7457                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
7458         if (!klass) {
7459                 /* Linked away */
7460                 ass->jit_optimizer_disabled = FALSE;
7461                 mono_memory_barrier ();
7462                 ass->jit_optimizer_disabled_inited = TRUE;
7463                 return FALSE;
7464         }
7465
7466         attrs = mono_custom_attrs_from_assembly (ass);
7467         if (attrs) {
7468                 for (i = 0; i < attrs->num_attrs; ++i) {
7469                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7470                         const gchar *p;
7471                         MonoMethodSignature *sig;
7472
7473                         if (!attr->ctor || attr->ctor->klass != klass)
7474                                 continue;
7475                         /* Decode the attribute. See reflection.c */
7476                         p = (const char*)attr->data;
7477                         g_assert (read16 (p) == 0x0001);
7478                         p += 2;
7479
7480                         // FIXME: Support named parameters
7481                         sig = mono_method_signature (attr->ctor);
7482                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7483                                 continue;
7484                         /* Two boolean arguments */
7485                         p ++;
7486                         val = *p;
7487                 }
7488                 mono_custom_attrs_free (attrs);
7489         }
7490
7491         ass->jit_optimizer_disabled = val;
7492         mono_memory_barrier ();
7493         ass->jit_optimizer_disabled_inited = TRUE;
7494
7495         return val;
7496 }
7497
7498 static gboolean
7499 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7500 {
7501         gboolean supported_tail_call;
7502         int i;
7503
7504 #ifdef MONO_ARCH_HAVE_OP_TAIL_CALL
7505         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7506 #else
7507         supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
7508 #endif
7509
7510         for (i = 0; i < fsig->param_count; ++i) {
7511                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7512                         /* These can point to the current method's stack */
7513                         supported_tail_call = FALSE;
7514         }
7515         if (fsig->hasthis && cmethod->klass->valuetype)
7516                 /* this might point to the current method's stack */
7517                 supported_tail_call = FALSE;
7518         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7519                 supported_tail_call = FALSE;
7520         if (cfg->method->save_lmf)
7521                 supported_tail_call = FALSE;
7522         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7523                 supported_tail_call = FALSE;
7524         if (call_opcode != CEE_CALL)
7525                 supported_tail_call = FALSE;
7526
7527         /* Debugging support */
7528 #if 0
7529         if (supported_tail_call) {
7530                 if (!mono_debug_count ())
7531                         supported_tail_call = FALSE;
7532         }
7533 #endif
7534
7535         return supported_tail_call;
7536 }
7537
7538 /* emits the code needed to access a managed tls var (like ThreadStatic)
7539  * with the value of the tls offset in offset_reg. thread_ins represents the MonoInternalThread
7540  * pointer for the current thread.
7541  * Returns the MonoInst* representing the address of the tls var.
7542  */
7543 static MonoInst*
7544 emit_managed_static_data_access (MonoCompile *cfg, MonoInst *thread_ins, int offset_reg)
7545 {
7546         MonoInst *addr;
7547         int static_data_reg, array_reg, dreg;
7548         int offset2_reg, idx_reg;
7549         // inlined access to the tls data (see threads.c)
7550         static_data_reg = alloc_ireg (cfg);
7551         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
7552         idx_reg = alloc_ireg (cfg);
7553         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
7554         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
7555         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
7556         array_reg = alloc_ireg (cfg);
7557         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
7558         offset2_reg = alloc_ireg (cfg);
7559         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
7560         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
7561         dreg = alloc_ireg (cfg);
7562         EMIT_NEW_BIALU (cfg, addr, OP_PADD, dreg, array_reg, offset2_reg);
7563         return addr;
7564 }
7565
7566 /*
7567  * handle_ctor_call:
7568  *
7569  *   Handle calls made to ctors from NEWOBJ opcodes.
7570  *
7571  *   REF_BBLOCK will point to the current bblock after the call.
7572  */
7573 static void
7574 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7575                                   MonoInst **sp, guint8 *ip, MonoBasicBlock **ref_bblock, int *inline_costs)
7576 {
7577         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7578         MonoBasicBlock *bblock = *ref_bblock;
7579
7580         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7581                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7582                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7583                         mono_class_vtable (cfg->domain, cmethod->klass);
7584                         CHECK_TYPELOAD (cmethod->klass);
7585
7586                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7587                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7588                 } else {
7589                         if (context_used) {
7590                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
7591                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7592                         } else {
7593                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7594
7595                                 CHECK_TYPELOAD (cmethod->klass);
7596                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7597                         }
7598                 }
7599         }
7600
7601         /* Avoid virtual calls to ctors if possible */
7602         if (mono_class_is_marshalbyref (cmethod->klass))
7603                 callvirt_this_arg = sp [0];
7604
7605         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7606                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7607                 CHECK_CFG_EXCEPTION;
7608         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7609                            mono_method_check_inlining (cfg, cmethod) &&
7610                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7611                 int costs;
7612
7613                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE, &bblock))) {
7614                         cfg->real_offset += 5;
7615
7616                         *inline_costs += costs - 5;
7617                         *ref_bblock = bblock;
7618                 } else {
7619                         INLINE_FAILURE ("inline failure");
7620                         // FIXME-VT: Clean this up
7621                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7622                                 GSHAREDVT_FAILURE(*ip);
7623                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7624                 }
7625         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7626                 MonoInst *addr;
7627
7628                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7629                 mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7630         } else if (context_used &&
7631                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7632                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7633                 MonoInst *cmethod_addr;
7634
7635                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7636
7637                 cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7638                                                                                           cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7639
7640                 mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7641         } else {
7642                 INLINE_FAILURE ("ctor call");
7643                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7644                                                                                   callvirt_this_arg, NULL, vtable_arg);
7645         }
7646  exception_exit:
7647         return;
7648 }
7649
7650 /*
7651  * mono_method_to_ir:
7652  *
7653  *   Translate the .net IL into linear IR.
7654  */
7655 int
7656 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7657                    MonoInst *return_var, MonoInst **inline_args,
7658                    guint inline_offset, gboolean is_virtual_call)
7659 {
7660         MonoError error;
7661         MonoInst *ins, **sp, **stack_start;
7662         MonoBasicBlock *bblock, *tblock = NULL, *init_localsbb = NULL;
7663         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7664         MonoMethod *cmethod, *method_definition;
7665         MonoInst **arg_array;
7666         MonoMethodHeader *header;
7667         MonoImage *image;
7668         guint32 token, ins_flag;
7669         MonoClass *klass;
7670         MonoClass *constrained_class = NULL;
7671         unsigned char *ip, *end, *target, *err_pos;
7672         MonoMethodSignature *sig;
7673         MonoGenericContext *generic_context = NULL;
7674         MonoGenericContainer *generic_container = NULL;
7675         MonoType **param_types;
7676         int i, n, start_new_bblock, dreg;
7677         int num_calls = 0, inline_costs = 0;
7678         int breakpoint_id = 0;
7679         guint num_args;
7680         GSList *class_inits = NULL;
7681         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7682         int context_used;
7683         gboolean init_locals, seq_points, skip_dead_blocks;
7684         gboolean sym_seq_points = FALSE;
7685         MonoDebugMethodInfo *minfo;
7686         MonoBitSet *seq_point_locs = NULL;
7687         MonoBitSet *seq_point_set_locs = NULL;
7688
7689         cfg->disable_inline = is_jit_optimizer_disabled (method);
7690
7691         /* serialization and xdomain stuff may need access to private fields and methods */
7692         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7693         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7694         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7695         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7696         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7697         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7698
7699         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7700         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7701         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7702         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7703         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7704
7705         image = method->klass->image;
7706         header = mono_method_get_header (method);
7707         if (!header) {
7708                 MonoLoaderError *error;
7709
7710                 if ((error = mono_loader_get_last_error ())) {
7711                         mono_cfg_set_exception (cfg, error->exception_type);
7712                 } else {
7713                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7714                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
7715                 }
7716                 goto exception_exit;
7717         }
7718         generic_container = mono_method_get_generic_container (method);
7719         sig = mono_method_signature (method);
7720         num_args = sig->hasthis + sig->param_count;
7721         ip = (unsigned char*)header->code;
7722         cfg->cil_start = ip;
7723         end = ip + header->code_size;
7724         cfg->stat_cil_code_size += header->code_size;
7725
7726         seq_points = cfg->gen_seq_points && cfg->method == method;
7727
7728         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7729                 /* We could hit a seq point before attaching to the JIT (#8338) */
7730                 seq_points = FALSE;
7731         }
7732
7733         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7734                 minfo = mono_debug_lookup_method (method);
7735                 if (minfo) {
7736                         MonoSymSeqPoint *sps;
7737                         int i, n_il_offsets;
7738
7739                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7740                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7741                         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);
7742                         sym_seq_points = TRUE;
7743                         for (i = 0; i < n_il_offsets; ++i) {
7744                                 if (sps [i].il_offset < header->code_size)
7745                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7746                         }
7747                         g_free (sps);
7748                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7749                         /* Methods without line number info like auto-generated property accessors */
7750                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7751                         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);
7752                         sym_seq_points = TRUE;
7753                 }
7754         }
7755
7756         /*
7757          * Methods without init_locals set could cause asserts in various passes
7758          * (#497220). To work around this, we emit dummy initialization opcodes
7759          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7760          * on some platforms.
7761          */
7762         if ((cfg->opt & MONO_OPT_UNSAFE) && ARCH_HAVE_DUMMY_INIT)
7763                 init_locals = header->init_locals;
7764         else
7765                 init_locals = TRUE;
7766
7767         method_definition = method;
7768         while (method_definition->is_inflated) {
7769                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7770                 method_definition = imethod->declaring;
7771         }
7772
7773         /* SkipVerification is not allowed if core-clr is enabled */
7774         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7775                 dont_verify = TRUE;
7776                 dont_verify_stloc = TRUE;
7777         }
7778
7779         if (sig->is_inflated)
7780                 generic_context = mono_method_get_context (method);
7781         else if (generic_container)
7782                 generic_context = &generic_container->context;
7783         cfg->generic_context = generic_context;
7784
7785         if (!cfg->generic_sharing_context)
7786                 g_assert (!sig->has_type_parameters);
7787
7788         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7789                 g_assert (method->is_inflated);
7790                 g_assert (mono_method_get_context (method)->method_inst);
7791         }
7792         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7793                 g_assert (sig->generic_param_count);
7794
7795         if (cfg->method == method) {
7796                 cfg->real_offset = 0;
7797         } else {
7798                 cfg->real_offset = inline_offset;
7799         }
7800
7801         cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7802         cfg->cil_offset_to_bb_len = header->code_size;
7803
7804         cfg->current_method = method;
7805
7806         if (cfg->verbose_level > 2)
7807                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7808
7809         param_types = mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7810         if (sig->hasthis)
7811                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7812         for (n = 0; n < sig->param_count; ++n)
7813                 param_types [n + sig->hasthis] = sig->params [n];
7814         cfg->arg_types = param_types;
7815
7816         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7817         if (cfg->method == method) {
7818
7819                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7820                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7821
7822                 /* ENTRY BLOCK */
7823                 NEW_BBLOCK (cfg, start_bblock);
7824                 cfg->bb_entry = start_bblock;
7825                 start_bblock->cil_code = NULL;
7826                 start_bblock->cil_length = 0;
7827
7828                 /* EXIT BLOCK */
7829                 NEW_BBLOCK (cfg, end_bblock);
7830                 cfg->bb_exit = end_bblock;
7831                 end_bblock->cil_code = NULL;
7832                 end_bblock->cil_length = 0;
7833                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7834                 g_assert (cfg->num_bblocks == 2);
7835
7836                 arg_array = cfg->args;
7837
7838                 if (header->num_clauses) {
7839                         cfg->spvars = g_hash_table_new (NULL, NULL);
7840                         cfg->exvars = g_hash_table_new (NULL, NULL);
7841                 }
7842                 /* handle exception clauses */
7843                 for (i = 0; i < header->num_clauses; ++i) {
7844                         MonoBasicBlock *try_bb;
7845                         MonoExceptionClause *clause = &header->clauses [i];
7846                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7847                         try_bb->real_offset = clause->try_offset;
7848                         try_bb->try_start = TRUE;
7849                         try_bb->region = ((i + 1) << 8) | clause->flags;
7850                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7851                         tblock->real_offset = clause->handler_offset;
7852                         tblock->flags |= BB_EXCEPTION_HANDLER;
7853
7854                         /*
7855                          * Linking the try block with the EH block hinders inlining as we won't be able to
7856                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7857                          */
7858                         if (COMPILE_LLVM (cfg))
7859                                 link_bblock (cfg, try_bb, tblock);
7860
7861                         if (*(ip + clause->handler_offset) == CEE_POP)
7862                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7863
7864                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7865                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7866                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7867                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7868                                 MONO_ADD_INS (tblock, ins);
7869
7870                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY) {
7871                                         /* finally clauses already have a seq point */
7872                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7873                                         MONO_ADD_INS (tblock, ins);
7874                                 }
7875
7876                                 /* todo: is a fault block unsafe to optimize? */
7877                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7878                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7879                         }
7880
7881                         /*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);
7882                           while (p < end) {
7883                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7884                           }*/
7885                         /* catch and filter blocks get the exception object on the stack */
7886                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7887                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7888
7889                                 /* mostly like handle_stack_args (), but just sets the input args */
7890                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7891                                 tblock->in_scount = 1;
7892                                 tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7893                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7894
7895                                 cfg->cbb = tblock;
7896
7897 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7898                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7899                                 if (!cfg->compile_llvm) {
7900                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7901                                         ins->dreg = tblock->in_stack [0]->dreg;
7902                                         MONO_ADD_INS (tblock, ins);
7903                                 }
7904 #else
7905                                 MonoInst *dummy_use;
7906
7907                                 /*
7908                                  * Add a dummy use for the exvar so its liveness info will be
7909                                  * correct.
7910                                  */
7911                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7912 #endif
7913
7914                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7915                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7916                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7917                                         tblock->real_offset = clause->data.filter_offset;
7918                                         tblock->in_scount = 1;
7919                                         tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7920                                         /* The filter block shares the exvar with the handler block */
7921                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7922                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7923                                         MONO_ADD_INS (tblock, ins);
7924                                 }
7925                         }
7926
7927                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7928                                         clause->data.catch_class &&
7929                                         cfg->generic_sharing_context &&
7930                                         mono_class_check_context_used (clause->data.catch_class)) {
7931                                 /*
7932                                  * In shared generic code with catch
7933                                  * clauses containing type variables
7934                                  * the exception handling code has to
7935                                  * be able to get to the rgctx.
7936                                  * Therefore we have to make sure that
7937                                  * the vtable/mrgctx argument (for
7938                                  * static or generic methods) or the
7939                                  * "this" argument (for non-static
7940                                  * methods) are live.
7941                                  */
7942                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7943                                                 mini_method_get_context (method)->method_inst ||
7944                                                 method->klass->valuetype) {
7945                                         mono_get_vtable_var (cfg);
7946                                 } else {
7947                                         MonoInst *dummy_use;
7948
7949                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7950                                 }
7951                         }
7952                 }
7953         } else {
7954                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7955                 cfg->cbb = start_bblock;
7956                 cfg->args = arg_array;
7957                 mono_save_args (cfg, sig, inline_args);
7958         }
7959
7960         /* FIRST CODE BLOCK */
7961         NEW_BBLOCK (cfg, bblock);
7962         bblock->cil_code = ip;
7963         cfg->cbb = bblock;
7964         cfg->ip = ip;
7965
7966         ADD_BBLOCK (cfg, bblock);
7967
7968         if (cfg->method == method) {
7969                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7970                 if (breakpoint_id) {
7971                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7972                         MONO_ADD_INS (bblock, ins);
7973                 }
7974         }
7975
7976         /* we use a separate basic block for the initialization code */
7977         NEW_BBLOCK (cfg, init_localsbb);
7978         cfg->bb_init = init_localsbb;
7979         init_localsbb->real_offset = cfg->real_offset;
7980         start_bblock->next_bb = init_localsbb;
7981         init_localsbb->next_bb = bblock;
7982         link_bblock (cfg, start_bblock, init_localsbb);
7983         link_bblock (cfg, init_localsbb, bblock);
7984
7985         cfg->cbb = init_localsbb;
7986
7987         if (cfg->gsharedvt && cfg->method == method) {
7988                 MonoGSharedVtMethodInfo *info;
7989                 MonoInst *var, *locals_var;
7990                 int dreg;
7991
7992                 info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7993                 info->method = cfg->method;
7994                 info->count_entries = 16;
7995                 info->entries = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7996                 cfg->gsharedvt_info = info;
7997
7998                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7999                 /* prevent it from being register allocated */
8000                 //var->flags |= MONO_INST_VOLATILE;
8001                 cfg->gsharedvt_info_var = var;
8002
8003                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8004                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8005
8006                 /* Allocate locals */
8007                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8008                 /* prevent it from being register allocated */
8009                 //locals_var->flags |= MONO_INST_VOLATILE;
8010                 cfg->gsharedvt_locals_var = locals_var;
8011
8012                 dreg = alloc_ireg (cfg);
8013                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8014
8015                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8016                 ins->dreg = locals_var->dreg;
8017                 ins->sreg1 = dreg;
8018                 MONO_ADD_INS (cfg->cbb, ins);
8019                 cfg->gsharedvt_locals_var_ins = ins;
8020
8021                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8022                 /*
8023                 if (init_locals)
8024                         ins->flags |= MONO_INST_INIT;
8025                 */
8026         }
8027
8028         if (mono_security_core_clr_enabled ()) {
8029                 /* check if this is native code, e.g. an icall or a p/invoke */
8030                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8031                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8032                         if (wrapped) {
8033                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8034                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8035
8036                                 /* if this ia a native call then it can only be JITted from platform code */
8037                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8038                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8039                                                 MonoException *ex = icall ? mono_get_exception_security () :
8040                                                         mono_get_exception_method_access ();
8041                                                 emit_throw_exception (cfg, ex);
8042                                         }
8043                                 }
8044                         }
8045                 }
8046         }
8047
8048         CHECK_CFG_EXCEPTION;
8049
8050         if (header->code_size == 0)
8051                 UNVERIFIED;
8052
8053         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8054                 ip = err_pos;
8055                 UNVERIFIED;
8056         }
8057
8058         if (cfg->method == method)
8059                 mono_debug_init_method (cfg, bblock, breakpoint_id);
8060
8061         for (n = 0; n < header->num_locals; ++n) {
8062                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8063                         UNVERIFIED;
8064         }
8065         class_inits = NULL;
8066
8067         /* We force the vtable variable here for all shared methods
8068            for the possibility that they might show up in a stack
8069            trace where their exact instantiation is needed. */
8070         if (cfg->generic_sharing_context && method == cfg->method) {
8071                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8072                                 mini_method_get_context (method)->method_inst ||
8073                                 method->klass->valuetype) {
8074                         mono_get_vtable_var (cfg);
8075                 } else {
8076                         /* FIXME: Is there a better way to do this?
8077                            We need the variable live for the duration
8078                            of the whole method. */
8079                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8080                 }
8081         }
8082
8083         /* add a check for this != NULL to inlined methods */
8084         if (is_virtual_call) {
8085                 MonoInst *arg_ins;
8086
8087                 NEW_ARGLOAD (cfg, arg_ins, 0);
8088                 MONO_ADD_INS (cfg->cbb, arg_ins);
8089                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8090         }
8091
8092         skip_dead_blocks = !dont_verify;
8093         if (skip_dead_blocks) {
8094                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8095                 CHECK_CFG_ERROR;
8096                 g_assert (bb);
8097         }
8098
8099         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8100         stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8101
8102         ins_flag = 0;
8103         start_new_bblock = 0;
8104         cfg->cbb = bblock;
8105         while (ip < end) {
8106                 if (cfg->method == method)
8107                         cfg->real_offset = ip - header->code;
8108                 else
8109                         cfg->real_offset = inline_offset;
8110                 cfg->ip = ip;
8111
8112                 context_used = 0;
8113
8114                 if (start_new_bblock) {
8115                         bblock->cil_length = ip - bblock->cil_code;
8116                         if (start_new_bblock == 2) {
8117                                 g_assert (ip == tblock->cil_code);
8118                         } else {
8119                                 GET_BBLOCK (cfg, tblock, ip);
8120                         }
8121                         bblock->next_bb = tblock;
8122                         bblock = tblock;
8123                         cfg->cbb = bblock;
8124                         start_new_bblock = 0;
8125                         for (i = 0; i < bblock->in_scount; ++i) {
8126                                 if (cfg->verbose_level > 3)
8127                                         printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8128                                 EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8129                                 *sp++ = ins;
8130                         }
8131                         if (class_inits)
8132                                 g_slist_free (class_inits);
8133                         class_inits = NULL;
8134                 } else {
8135                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != bblock)) {
8136                                 link_bblock (cfg, bblock, tblock);
8137                                 if (sp != stack_start) {
8138                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8139                                         sp = stack_start;
8140                                         CHECK_UNVERIFIABLE (cfg);
8141                                 }
8142                                 bblock->next_bb = tblock;
8143                                 bblock = tblock;
8144                                 cfg->cbb = bblock;
8145                                 for (i = 0; i < bblock->in_scount; ++i) {
8146                                         if (cfg->verbose_level > 3)
8147                                                 printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8148                                         EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8149                                         *sp++ = ins;
8150                                 }
8151                                 g_slist_free (class_inits);
8152                                 class_inits = NULL;
8153                         }
8154                 }
8155
8156                 if (skip_dead_blocks) {
8157                         int ip_offset = ip - header->code;
8158
8159                         if (ip_offset == bb->end)
8160                                 bb = bb->next;
8161
8162                         if (bb->dead) {
8163                                 int op_size = mono_opcode_size (ip, end);
8164                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8165
8166                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8167
8168                                 if (ip_offset + op_size == bb->end) {
8169                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8170                                         MONO_ADD_INS (bblock, ins);
8171                                         start_new_bblock = 1;
8172                                 }
8173
8174                                 ip += op_size;
8175                                 continue;
8176                         }
8177                 }
8178                 /*
8179                  * Sequence points are points where the debugger can place a breakpoint.
8180                  * Currently, we generate these automatically at points where the IL
8181                  * stack is empty.
8182                  */
8183                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8184                         /*
8185                          * Make methods interruptable at the beginning, and at the targets of
8186                          * backward branches.
8187                          * Also, do this at the start of every bblock in methods with clauses too,
8188                          * to be able to handle instructions with inprecise control flow like
8189                          * throw/endfinally.
8190                          * Backward branches are handled at the end of method-to-ir ().
8191                          */
8192                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8193
8194                         /* Avoid sequence points on empty IL like .volatile */
8195                         // FIXME: Enable this
8196                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8197                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8198                         if (sp != stack_start)
8199                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8200                         MONO_ADD_INS (cfg->cbb, ins);
8201
8202                         if (sym_seq_points)
8203                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8204                 }
8205
8206                 bblock->real_offset = cfg->real_offset;
8207
8208                 if ((cfg->method == method) && cfg->coverage_info) {
8209                         guint32 cil_offset = ip - header->code;
8210                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8211
8212                         /* TODO: Use an increment here */
8213 #if defined(TARGET_X86)
8214                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8215                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8216                         ins->inst_imm = 1;
8217                         MONO_ADD_INS (cfg->cbb, ins);
8218 #else
8219                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8220                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8221 #endif
8222                 }
8223
8224                 if (cfg->verbose_level > 3)
8225                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8226
8227                 switch (*ip) {
8228                 case CEE_NOP:
8229                         if (seq_points && !sym_seq_points && sp != stack_start) {
8230                                 /*
8231                                  * The C# compiler uses these nops to notify the JIT that it should
8232                                  * insert seq points.
8233                                  */
8234                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8235                                 MONO_ADD_INS (cfg->cbb, ins);
8236                         }
8237                         if (cfg->keep_cil_nops)
8238                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8239                         else
8240                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8241                         ip++;
8242                         MONO_ADD_INS (bblock, ins);
8243                         break;
8244                 case CEE_BREAK:
8245                         if (should_insert_brekpoint (cfg->method)) {
8246                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8247                         } else {
8248                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8249                         }
8250                         ip++;
8251                         MONO_ADD_INS (bblock, ins);
8252                         break;
8253                 case CEE_LDARG_0:
8254                 case CEE_LDARG_1:
8255                 case CEE_LDARG_2:
8256                 case CEE_LDARG_3:
8257                         CHECK_STACK_OVF (1);
8258                         n = (*ip)-CEE_LDARG_0;
8259                         CHECK_ARG (n);
8260                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8261                         ip++;
8262                         *sp++ = ins;
8263                         break;
8264                 case CEE_LDLOC_0:
8265                 case CEE_LDLOC_1:
8266                 case CEE_LDLOC_2:
8267                 case CEE_LDLOC_3:
8268                         CHECK_STACK_OVF (1);
8269                         n = (*ip)-CEE_LDLOC_0;
8270                         CHECK_LOCAL (n);
8271                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8272                         ip++;
8273                         *sp++ = ins;
8274                         break;
8275                 case CEE_STLOC_0:
8276                 case CEE_STLOC_1:
8277                 case CEE_STLOC_2:
8278                 case CEE_STLOC_3: {
8279                         CHECK_STACK (1);
8280                         n = (*ip)-CEE_STLOC_0;
8281                         CHECK_LOCAL (n);
8282                         --sp;
8283                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8284                                 UNVERIFIED;
8285                         emit_stloc_ir (cfg, sp, header, n);
8286                         ++ip;
8287                         inline_costs += 1;
8288                         break;
8289                         }
8290                 case CEE_LDARG_S:
8291                         CHECK_OPSIZE (2);
8292                         CHECK_STACK_OVF (1);
8293                         n = ip [1];
8294                         CHECK_ARG (n);
8295                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8296                         *sp++ = ins;
8297                         ip += 2;
8298                         break;
8299                 case CEE_LDARGA_S:
8300                         CHECK_OPSIZE (2);
8301                         CHECK_STACK_OVF (1);
8302                         n = ip [1];
8303                         CHECK_ARG (n);
8304                         NEW_ARGLOADA (cfg, ins, n);
8305                         MONO_ADD_INS (cfg->cbb, ins);
8306                         *sp++ = ins;
8307                         ip += 2;
8308                         break;
8309                 case CEE_STARG_S:
8310                         CHECK_OPSIZE (2);
8311                         CHECK_STACK (1);
8312                         --sp;
8313                         n = ip [1];
8314                         CHECK_ARG (n);
8315                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8316                                 UNVERIFIED;
8317                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8318                         ip += 2;
8319                         break;
8320                 case CEE_LDLOC_S:
8321                         CHECK_OPSIZE (2);
8322                         CHECK_STACK_OVF (1);
8323                         n = ip [1];
8324                         CHECK_LOCAL (n);
8325                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8326                         *sp++ = ins;
8327                         ip += 2;
8328                         break;
8329                 case CEE_LDLOCA_S: {
8330                         unsigned char *tmp_ip;
8331                         CHECK_OPSIZE (2);
8332                         CHECK_STACK_OVF (1);
8333                         CHECK_LOCAL (ip [1]);
8334
8335                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8336                                 ip = tmp_ip;
8337                                 inline_costs += 1;
8338                                 break;
8339                         }
8340
8341                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8342                         *sp++ = ins;
8343                         ip += 2;
8344                         break;
8345                 }
8346                 case CEE_STLOC_S:
8347                         CHECK_OPSIZE (2);
8348                         CHECK_STACK (1);
8349                         --sp;
8350                         CHECK_LOCAL (ip [1]);
8351                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8352                                 UNVERIFIED;
8353                         emit_stloc_ir (cfg, sp, header, ip [1]);
8354                         ip += 2;
8355                         inline_costs += 1;
8356                         break;
8357                 case CEE_LDNULL:
8358                         CHECK_STACK_OVF (1);
8359                         EMIT_NEW_PCONST (cfg, ins, NULL);
8360                         ins->type = STACK_OBJ;
8361                         ++ip;
8362                         *sp++ = ins;
8363                         break;
8364                 case CEE_LDC_I4_M1:
8365                         CHECK_STACK_OVF (1);
8366                         EMIT_NEW_ICONST (cfg, ins, -1);
8367                         ++ip;
8368                         *sp++ = ins;
8369                         break;
8370                 case CEE_LDC_I4_0:
8371                 case CEE_LDC_I4_1:
8372                 case CEE_LDC_I4_2:
8373                 case CEE_LDC_I4_3:
8374                 case CEE_LDC_I4_4:
8375                 case CEE_LDC_I4_5:
8376                 case CEE_LDC_I4_6:
8377                 case CEE_LDC_I4_7:
8378                 case CEE_LDC_I4_8:
8379                         CHECK_STACK_OVF (1);
8380                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8381                         ++ip;
8382                         *sp++ = ins;
8383                         break;
8384                 case CEE_LDC_I4_S:
8385                         CHECK_OPSIZE (2);
8386                         CHECK_STACK_OVF (1);
8387                         ++ip;
8388                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8389                         ++ip;
8390                         *sp++ = ins;
8391                         break;
8392                 case CEE_LDC_I4:
8393                         CHECK_OPSIZE (5);
8394                         CHECK_STACK_OVF (1);
8395                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8396                         ip += 5;
8397                         *sp++ = ins;
8398                         break;
8399                 case CEE_LDC_I8:
8400                         CHECK_OPSIZE (9);
8401                         CHECK_STACK_OVF (1);
8402                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8403                         ins->type = STACK_I8;
8404                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8405                         ++ip;
8406                         ins->inst_l = (gint64)read64 (ip);
8407                         MONO_ADD_INS (bblock, ins);
8408                         ip += 8;
8409                         *sp++ = ins;
8410                         break;
8411                 case CEE_LDC_R4: {
8412                         float *f;
8413                         gboolean use_aotconst = FALSE;
8414
8415 #ifdef TARGET_POWERPC
8416                         /* FIXME: Clean this up */
8417                         if (cfg->compile_aot)
8418                                 use_aotconst = TRUE;
8419 #endif
8420
8421                         /* FIXME: we should really allocate this only late in the compilation process */
8422                         f = mono_domain_alloc (cfg->domain, sizeof (float));
8423                         CHECK_OPSIZE (5);
8424                         CHECK_STACK_OVF (1);
8425
8426                         if (use_aotconst) {
8427                                 MonoInst *cons;
8428                                 int dreg;
8429
8430                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8431
8432                                 dreg = alloc_freg (cfg);
8433                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8434                                 ins->type = cfg->r4_stack_type;
8435                         } else {
8436                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8437                                 ins->type = cfg->r4_stack_type;
8438                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8439                                 ins->inst_p0 = f;
8440                                 MONO_ADD_INS (bblock, ins);
8441                         }
8442                         ++ip;
8443                         readr4 (ip, f);
8444                         ip += 4;
8445                         *sp++ = ins;
8446                         break;
8447                 }
8448                 case CEE_LDC_R8: {
8449                         double *d;
8450                         gboolean use_aotconst = FALSE;
8451
8452 #ifdef TARGET_POWERPC
8453                         /* FIXME: Clean this up */
8454                         if (cfg->compile_aot)
8455                                 use_aotconst = TRUE;
8456 #endif
8457
8458                         /* FIXME: we should really allocate this only late in the compilation process */
8459                         d = mono_domain_alloc (cfg->domain, sizeof (double));
8460                         CHECK_OPSIZE (9);
8461                         CHECK_STACK_OVF (1);
8462
8463                         if (use_aotconst) {
8464                                 MonoInst *cons;
8465                                 int dreg;
8466
8467                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8468
8469                                 dreg = alloc_freg (cfg);
8470                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8471                                 ins->type = STACK_R8;
8472                         } else {
8473                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8474                                 ins->type = STACK_R8;
8475                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8476                                 ins->inst_p0 = d;
8477                                 MONO_ADD_INS (bblock, ins);
8478                         }
8479                         ++ip;
8480                         readr8 (ip, d);
8481                         ip += 8;
8482                         *sp++ = ins;
8483                         break;
8484                 }
8485                 case CEE_DUP: {
8486                         MonoInst *temp, *store;
8487                         CHECK_STACK (1);
8488                         CHECK_STACK_OVF (1);
8489                         sp--;
8490                         ins = *sp;
8491
8492                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8493                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8494
8495                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8496                         *sp++ = ins;
8497
8498                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8499                         *sp++ = ins;
8500
8501                         ++ip;
8502                         inline_costs += 2;
8503                         break;
8504                 }
8505                 case CEE_POP:
8506                         CHECK_STACK (1);
8507                         ip++;
8508                         --sp;
8509
8510 #ifdef TARGET_X86
8511                         if (sp [0]->type == STACK_R8)
8512                                 /* we need to pop the value from the x86 FP stack */
8513                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8514 #endif
8515                         break;
8516                 case CEE_JMP: {
8517                         MonoCallInst *call;
8518
8519                         INLINE_FAILURE ("jmp");
8520                         GSHAREDVT_FAILURE (*ip);
8521
8522                         CHECK_OPSIZE (5);
8523                         if (stack_start != sp)
8524                                 UNVERIFIED;
8525                         token = read32 (ip + 1);
8526                         /* FIXME: check the signature matches */
8527                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8528
8529                         if (!cmethod || mono_loader_get_last_error ())
8530                                 LOAD_ERROR;
8531
8532                         if (cfg->generic_sharing_context && mono_method_check_context_used (cmethod))
8533                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8534
8535                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8536
8537                         if (ARCH_HAVE_OP_TAIL_CALL) {
8538                                 MonoMethodSignature *fsig = mono_method_signature (cmethod);
8539                                 int i, n;
8540
8541                                 /* Handle tail calls similarly to calls */
8542                                 n = fsig->param_count + fsig->hasthis;
8543
8544                                 DISABLE_AOT (cfg);
8545
8546                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8547                                 call->method = cmethod;
8548                                 call->tail_call = TRUE;
8549                                 call->signature = mono_method_signature (cmethod);
8550                                 call->args = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8551                                 call->inst.inst_p0 = cmethod;
8552                                 for (i = 0; i < n; ++i)
8553                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8554
8555                                 mono_arch_emit_call (cfg, call);
8556                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8557                                 MONO_ADD_INS (bblock, (MonoInst*)call);
8558                         } else {
8559                                 for (i = 0; i < num_args; ++i)
8560                                         /* Prevent arguments from being optimized away */
8561                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8562
8563                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8564                                 ins = (MonoInst*)call;
8565                                 ins->inst_p0 = cmethod;
8566                                 MONO_ADD_INS (bblock, ins);
8567                         }
8568
8569                         ip += 5;
8570                         start_new_bblock = 1;
8571                         break;
8572                 }
8573                 case CEE_CALLI: {
8574                         MonoInst *addr;
8575                         MonoMethodSignature *fsig;
8576
8577                         CHECK_OPSIZE (5);
8578                         token = read32 (ip + 1);
8579
8580                         ins = NULL;
8581
8582                         //GSHAREDVT_FAILURE (*ip);
8583                         cmethod = NULL;
8584                         CHECK_STACK (1);
8585                         --sp;
8586                         addr = *sp;
8587                         fsig = mini_get_signature (method, token, generic_context);
8588
8589                         if (method->dynamic && fsig->pinvoke) {
8590                                 MonoInst *args [3];
8591
8592                                 /*
8593                                  * This is a call through a function pointer using a pinvoke
8594                                  * signature. Have to create a wrapper and call that instead.
8595                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8596                                  * instead based on the signature.
8597                                  */
8598                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8599                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8600                                 args [2] = addr;
8601                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8602                         }
8603
8604                         n = fsig->param_count + fsig->hasthis;
8605
8606                         CHECK_STACK (n);
8607
8608                         //g_assert (!virtual || fsig->hasthis);
8609
8610                         sp -= n;
8611
8612                         inline_costs += 10 * num_calls++;
8613
8614                         /*
8615                          * Making generic calls out of gsharedvt methods.
8616                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8617                          * patching gshared method addresses into a gsharedvt method.
8618                          */
8619                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
8620                                 /*
8621                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8622                                  */
8623                                 MonoInst *callee = addr;
8624
8625                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8626                                         /* Not tested */
8627                                         GSHAREDVT_FAILURE (*ip);
8628
8629                                 addr = emit_get_rgctx_sig (cfg, context_used,
8630                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8631                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8632                                 goto calli_end;
8633                         }
8634
8635                         /* Prevent inlining of methods with indirect calls */
8636                         INLINE_FAILURE ("indirect call");
8637
8638                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8639                                 int info_type;
8640                                 gpointer info_data;
8641
8642                                 /*
8643                                  * Instead of emitting an indirect call, emit a direct call
8644                                  * with the contents of the aotconst as the patch info.
8645                                  */
8646                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8647                                         info_type = addr->inst_c1;
8648                                         info_data = addr->inst_p0;
8649                                 } else {
8650                                         info_type = addr->inst_right->inst_c1;
8651                                         info_data = addr->inst_right->inst_left;
8652                                 }
8653
8654                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8655                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8656                                         NULLIFY_INS (addr);
8657                                         goto calli_end;
8658                                 }
8659                         }
8660                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8661
8662                         calli_end:
8663
8664                         /* End of call, INS should contain the result of the call, if any */
8665
8666                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8667                                 g_assert (ins);
8668                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8669                         }
8670
8671                         CHECK_CFG_EXCEPTION;
8672
8673                         ip += 5;
8674                         ins_flag = 0;
8675                         constrained_class = NULL;
8676                         break;
8677                 }
8678                 case CEE_CALL:
8679                 case CEE_CALLVIRT: {
8680                         MonoInst *addr = NULL;
8681                         MonoMethodSignature *fsig = NULL;
8682                         int array_rank = 0;
8683                         int virtual = *ip == CEE_CALLVIRT;
8684                         gboolean pass_imt_from_rgctx = FALSE;
8685                         MonoInst *imt_arg = NULL;
8686                         MonoInst *keep_this_alive = NULL;
8687                         gboolean pass_vtable = FALSE;
8688                         gboolean pass_mrgctx = FALSE;
8689                         MonoInst *vtable_arg = NULL;
8690                         gboolean check_this = FALSE;
8691                         gboolean supported_tail_call = FALSE;
8692                         gboolean tail_call = FALSE;
8693                         gboolean need_seq_point = FALSE;
8694                         guint32 call_opcode = *ip;
8695                         gboolean emit_widen = TRUE;
8696                         gboolean push_res = TRUE;
8697                         gboolean skip_ret = FALSE;
8698                         gboolean delegate_invoke = FALSE;
8699                         gboolean direct_icall = FALSE;
8700                         gboolean constrained_partial_call = FALSE;
8701                         MonoMethod *cil_method;
8702
8703                         CHECK_OPSIZE (5);
8704                         token = read32 (ip + 1);
8705
8706                         ins = NULL;
8707
8708                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8709                         cil_method = cmethod;
8710
8711                         if (constrained_class) {
8712                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
8713                                         if (!mini_is_gsharedvt_klass (cfg, constrained_class)) {
8714                                                 g_assert (!cmethod->klass->valuetype);
8715                                                 if (!mini_type_is_reference (cfg, &constrained_class->byval_arg))
8716                                                         constrained_partial_call = TRUE;
8717                                         }
8718                                 }
8719
8720                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8721                                         if (cfg->verbose_level > 2)
8722                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8723                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8724                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8725                                                   cfg->generic_sharing_context)) {
8726                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8727                                                 CHECK_CFG_ERROR;
8728                                         }
8729                                 } else {
8730                                         if (cfg->verbose_level > 2)
8731                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8732
8733                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
8734                                                 /*
8735                                                  * This is needed since get_method_constrained can't find
8736                                                  * the method in klass representing a type var.
8737                                                  * The type var is guaranteed to be a reference type in this
8738                                                  * case.
8739                                                  */
8740                                                 if (!mini_is_gsharedvt_klass (cfg, constrained_class))
8741                                                         g_assert (!cmethod->klass->valuetype);
8742                                         } else {
8743                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8744                                                 CHECK_CFG_ERROR;
8745                                         }
8746                                 }
8747                         }
8748
8749                         if (!cmethod || mono_loader_get_last_error ())
8750                                 LOAD_ERROR;
8751                         if (!dont_verify && !cfg->skip_visibility) {
8752                                 MonoMethod *target_method = cil_method;
8753                                 if (method->is_inflated) {
8754                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
8755                                 }
8756                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8757                                         !mono_method_can_access_method (method, cil_method))
8758                                         METHOD_ACCESS_FAILURE (method, cil_method);
8759                         }
8760
8761                         if (mono_security_core_clr_enabled ())
8762                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method, bblock, ip);
8763
8764                         if (!virtual && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8765                                 /* MS.NET seems to silently convert this to a callvirt */
8766                                 virtual = 1;
8767
8768                         {
8769                                 /*
8770                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8771                                  * converts to a callvirt.
8772                                  *
8773                                  * tests/bug-515884.il is an example of this behavior
8774                                  */
8775                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8776                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8777                                 if (!virtual && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8778                                         virtual = 1;
8779                         }
8780
8781                         if (!cmethod->klass->inited)
8782                                 if (!mono_class_init (cmethod->klass))
8783                                         TYPE_LOAD_ERROR (cmethod->klass);
8784
8785                         fsig = mono_method_signature (cmethod);
8786                         if (!fsig)
8787                                 LOAD_ERROR;
8788                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8789                                 mini_class_is_system_array (cmethod->klass)) {
8790                                 array_rank = cmethod->klass->rank;
8791                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8792                                 direct_icall = TRUE;
8793                         } else if (fsig->pinvoke) {
8794                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod,
8795                                                                                                                                            check_for_pending_exc, cfg->compile_aot);
8796                                 fsig = mono_method_signature (wrapper);
8797                         } else if (constrained_class) {
8798                         } else {
8799                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8800                                 CHECK_CFG_ERROR;
8801                         }
8802
8803                         mono_save_token_info (cfg, image, token, cil_method);
8804
8805                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8806                                 need_seq_point = TRUE;
8807
8808                         /* Don't support calls made using type arguments for now */
8809                         /*
8810                           if (cfg->gsharedvt) {
8811                           if (mini_is_gsharedvt_signature (cfg, fsig))
8812                           GSHAREDVT_FAILURE (*ip);
8813                           }
8814                         */
8815
8816                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8817                                 g_assert_not_reached ();
8818
8819                         n = fsig->param_count + fsig->hasthis;
8820
8821                         if (!cfg->generic_sharing_context && cmethod->klass->generic_container)
8822                                 UNVERIFIED;
8823
8824                         if (!cfg->generic_sharing_context)
8825                                 g_assert (!mono_method_check_context_used (cmethod));
8826
8827                         CHECK_STACK (n);
8828
8829                         //g_assert (!virtual || fsig->hasthis);
8830
8831                         sp -= n;
8832
8833                         if (constrained_class) {
8834                                 if (mini_is_gsharedvt_klass (cfg, constrained_class)) {
8835                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8836                                                 /* The 'Own method' case below */
8837                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
8838                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8839                                         } else {
8840                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen, &bblock);
8841                                                 CHECK_CFG_EXCEPTION;
8842                                                 g_assert (ins);
8843                                                 goto call_end;
8844                                         }
8845                                 }
8846
8847                                 /*
8848                                  * We have the `constrained.' prefix opcode.
8849                                  */
8850                                 if (constrained_partial_call) {
8851                                         gboolean need_box = TRUE;
8852
8853                                         /*
8854                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8855                                          * called method is not known at compile time either. The called method could end up being
8856                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8857                                          * to box the receiver.
8858                                          * A simple solution would be to box always and make a normal virtual call, but that would
8859                                          * be bad performance wise.
8860                                          */
8861                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
8862                                                 /*
8863                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8864                                                  */
8865                                                 need_box = FALSE;
8866                                         }
8867
8868                                         if (need_box) {
8869                                                 MonoInst *box_type;
8870                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8871                                                 MonoInst *nonbox_call;
8872
8873                                                 /*
8874                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8875                                                  * if needed.
8876                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8877                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8878                                                  */
8879                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8880
8881                                                 NEW_BBLOCK (cfg, is_ref_bb);
8882                                                 NEW_BBLOCK (cfg, end_bb);
8883
8884                                                 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);
8885                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, 1);
8886                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8887
8888                                                 /* Non-ref case */
8889                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8890
8891                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8892
8893                                                 /* Ref case */
8894                                                 MONO_START_BB (cfg, is_ref_bb);
8895                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8896                                                 ins->klass = constrained_class;
8897                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8898                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8899
8900                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8901
8902                                                 MONO_START_BB (cfg, end_bb);
8903                                                 bblock = end_bb;
8904
8905                                                 nonbox_call->dreg = ins->dreg;
8906                                         } else {
8907                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
8908                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8909                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8910                                         }
8911                                         goto call_end;
8912                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8913                                         /*
8914                                          * The type parameter is instantiated as a valuetype,
8915                                          * but that type doesn't override the method we're
8916                                          * calling, so we need to box `this'.
8917                                          */
8918                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8919                                         ins->klass = constrained_class;
8920                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8921                                         CHECK_CFG_EXCEPTION;
8922                                 } else if (!constrained_class->valuetype) {
8923                                         int dreg = alloc_ireg_ref (cfg);
8924
8925                                         /*
8926                                          * The type parameter is instantiated as a reference
8927                                          * type.  We have a managed pointer on the stack, so
8928                                          * we need to dereference it here.
8929                                          */
8930                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8931                                         ins->type = STACK_OBJ;
8932                                         sp [0] = ins;
8933                                 } else {
8934                                         if (cmethod->klass->valuetype) {
8935                                                 /* Own method */
8936                                         } else {
8937                                                 /* Interface method */
8938                                                 int ioffset, slot;
8939
8940                                                 mono_class_setup_vtable (constrained_class);
8941                                                 CHECK_TYPELOAD (constrained_class);
8942                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8943                                                 if (ioffset == -1)
8944                                                         TYPE_LOAD_ERROR (constrained_class);
8945                                                 slot = mono_method_get_vtable_slot (cmethod);
8946                                                 if (slot == -1)
8947                                                         TYPE_LOAD_ERROR (cmethod->klass);
8948                                                 cmethod = constrained_class->vtable [ioffset + slot];
8949
8950                                                 if (cmethod->klass == mono_defaults.enum_class) {
8951                                                         /* Enum implements some interfaces, so treat this as the first case */
8952                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8953                                                         ins->klass = constrained_class;
8954                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8955                                                         CHECK_CFG_EXCEPTION;
8956                                                 }
8957                                         }
8958                                         virtual = 0;
8959                                 }
8960                                 constrained_class = NULL;
8961                         }
8962
8963                         if (check_call_signature (cfg, fsig, sp))
8964                                 UNVERIFIED;
8965
8966                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8967                                 delegate_invoke = TRUE;
8968
8969                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8970                                 bblock = cfg->cbb;
8971                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8972                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8973                                         emit_widen = FALSE;
8974                                 }
8975
8976                                 goto call_end;
8977                         }
8978
8979                         /*
8980                          * If the callee is a shared method, then its static cctor
8981                          * might not get called after the call was patched.
8982                          */
8983                         if (cfg->generic_sharing_context && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8984                                 emit_generic_class_init (cfg, cmethod->klass, &bblock);
8985                                 CHECK_TYPELOAD (cmethod->klass);
8986                         }
8987
8988                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8989
8990                         if (cfg->generic_sharing_context) {
8991                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8992
8993                                 context_used = mini_method_check_context_used (cfg, cmethod);
8994
8995                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8996                                         /* Generic method interface
8997                                            calls are resolved via a
8998                                            helper function and don't
8999                                            need an imt. */
9000                                         if (!cmethod_context || !cmethod_context->method_inst)
9001                                                 pass_imt_from_rgctx = TRUE;
9002                                 }
9003
9004                                 /*
9005                                  * If a shared method calls another
9006                                  * shared method then the caller must
9007                                  * have a generic sharing context
9008                                  * because the magic trampoline
9009                                  * requires it.  FIXME: We shouldn't
9010                                  * have to force the vtable/mrgctx
9011                                  * variable here.  Instead there
9012                                  * should be a flag in the cfg to
9013                                  * request a generic sharing context.
9014                                  */
9015                                 if (context_used &&
9016                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9017                                         mono_get_vtable_var (cfg);
9018                         }
9019
9020                         if (pass_vtable) {
9021                                 if (context_used) {
9022                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9023                                 } else {
9024                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9025
9026                                         CHECK_TYPELOAD (cmethod->klass);
9027                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9028                                 }
9029                         }
9030
9031                         if (pass_mrgctx) {
9032                                 g_assert (!vtable_arg);
9033
9034                                 if (!cfg->compile_aot) {
9035                                         /*
9036                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9037                                          * for type load errors before.
9038                                          */
9039                                         mono_class_setup_vtable (cmethod->klass);
9040                                         CHECK_TYPELOAD (cmethod->klass);
9041                                 }
9042
9043                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9044
9045                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9046                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9047                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9048                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9049                                         if (virtual)
9050                                                 check_this = TRUE;
9051                                         virtual = 0;
9052                                 }
9053                         }
9054
9055                         if (pass_imt_from_rgctx) {
9056                                 g_assert (!pass_vtable);
9057
9058                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9059                                         cmethod, MONO_RGCTX_INFO_METHOD);
9060                         }
9061
9062                         if (check_this)
9063                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9064
9065                         /* Calling virtual generic methods */
9066                         if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9067                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9068                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9069                             fsig->generic_param_count &&
9070                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))) {
9071                                 MonoInst *this_temp, *this_arg_temp, *store;
9072                                 MonoInst *iargs [4];
9073                                 gboolean use_imt = FALSE;
9074
9075                                 g_assert (fsig->is_inflated);
9076
9077                                 /* Prevent inlining of methods that contain indirect calls */
9078                                 INLINE_FAILURE ("virtual generic call");
9079
9080                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
9081                                         GSHAREDVT_FAILURE (*ip);
9082
9083 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
9084                                 if (cmethod->wrapper_type == MONO_WRAPPER_NONE)
9085                                         use_imt = TRUE;
9086 #endif
9087
9088                                 if (use_imt) {
9089                                         g_assert (!imt_arg);
9090                                         if (!context_used)
9091                                                 g_assert (cmethod->is_inflated);
9092                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9093                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9094                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9095                                 } else {
9096                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9097                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9098                                         MONO_ADD_INS (bblock, store);
9099
9100                                         /* FIXME: This should be a managed pointer */
9101                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9102
9103                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9104                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9105                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9106                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9107                                         addr = mono_emit_jit_icall (cfg,
9108                                                                                                 mono_helper_compile_generic_method, iargs);
9109
9110                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9111
9112                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9113                                 }
9114
9115                                 goto call_end;
9116                         }
9117
9118                         /*
9119                          * Implement a workaround for the inherent races involved in locking:
9120                          * Monitor.Enter ()
9121                          * try {
9122                          * } finally {
9123                          *    Monitor.Exit ()
9124                          * }
9125                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9126                          * try block, the Exit () won't be executed, see:
9127                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9128                          * To work around this, we extend such try blocks to include the last x bytes
9129                          * of the Monitor.Enter () call.
9130                          */
9131                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9132                                 MonoBasicBlock *tbb;
9133
9134                                 GET_BBLOCK (cfg, tbb, ip + 5);
9135                                 /*
9136                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9137                                  * from Monitor.Enter like ArgumentNullException.
9138                                  */
9139                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9140                                         /* Mark this bblock as needing to be extended */
9141                                         tbb->extend_try_block = TRUE;
9142                                 }
9143                         }
9144
9145                         /* Conversion to a JIT intrinsic */
9146                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9147                                 bblock = cfg->cbb;
9148                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9149                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9150                                         emit_widen = FALSE;
9151                                 }
9152                                 goto call_end;
9153                         }
9154
9155                         /* Inlining */
9156                         if ((cfg->opt & MONO_OPT_INLINE) &&
9157                                 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9158                             mono_method_check_inlining (cfg, cmethod)) {
9159                                 int costs;
9160                                 gboolean always = FALSE;
9161
9162                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9163                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9164                                         /* Prevent inlining of methods that call wrappers */
9165                                         INLINE_FAILURE ("wrapper call");
9166                                         cmethod = mono_marshal_get_native_wrapper (cmethod, check_for_pending_exc, FALSE);
9167                                         always = TRUE;
9168                                 }
9169
9170                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always, &bblock);
9171                                 if (costs) {
9172                                         cfg->real_offset += 5;
9173
9174                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9175                                                 /* *sp is already set by inline_method */
9176                                                 sp++;
9177                                                 push_res = FALSE;
9178                                         }
9179
9180                                         inline_costs += costs;
9181
9182                                         goto call_end;
9183                                 }
9184                         }
9185
9186                         /* Tail recursion elimination */
9187                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9188                                 gboolean has_vtargs = FALSE;
9189                                 int i;
9190
9191                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9192                                 INLINE_FAILURE ("tail call");
9193
9194                                 /* keep it simple */
9195                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9196                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9197                                                 has_vtargs = TRUE;
9198                                 }
9199
9200                                 if (!has_vtargs) {
9201                                         for (i = 0; i < n; ++i)
9202                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9203                                         MONO_INST_NEW (cfg, ins, OP_BR);
9204                                         MONO_ADD_INS (bblock, ins);
9205                                         tblock = start_bblock->out_bb [0];
9206                                         link_bblock (cfg, bblock, tblock);
9207                                         ins->inst_target_bb = tblock;
9208                                         start_new_bblock = 1;
9209
9210                                         /* skip the CEE_RET, too */
9211                                         if (ip_in_bb (cfg, bblock, ip + 5))
9212                                                 skip_ret = TRUE;
9213                                         push_res = FALSE;
9214                                         goto call_end;
9215                                 }
9216                         }
9217
9218                         inline_costs += 10 * num_calls++;
9219
9220                         /*
9221                          * Making generic calls out of gsharedvt methods.
9222                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9223                          * patching gshared method addresses into a gsharedvt method.
9224                          */
9225                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (cfg, fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9226                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY)) {
9227                                 MonoRgctxInfoType info_type;
9228
9229                                 if (virtual) {
9230                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9231                                                 //GSHAREDVT_FAILURE (*ip);
9232                                         // disable for possible remoting calls
9233                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9234                                                 GSHAREDVT_FAILURE (*ip);
9235                                         if (fsig->generic_param_count) {
9236                                                 /* virtual generic call */
9237                                                 g_assert (!imt_arg);
9238                                                 /* Same as the virtual generic case above */
9239                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9240                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9241                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9242                                                 vtable_arg = NULL;
9243                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9244                                                 /* This can happen when we call a fully instantiated iface method */
9245                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9246                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9247                                                 vtable_arg = NULL;
9248                                         }
9249                                 }
9250
9251                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9252                                         keep_this_alive = sp [0];
9253
9254                                 if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9255                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9256                                 else
9257                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9258                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9259
9260                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9261                                 goto call_end;
9262                         }
9263
9264                         /* Generic sharing */
9265
9266                         /*
9267                          * Use this if the callee is gsharedvt sharable too, since
9268                          * at runtime we might find an instantiation so the call cannot
9269                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9270                          */
9271                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9272                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9273                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9274                                 (!virtual || MONO_METHOD_IS_FINAL (cmethod) ||
9275                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9276                                 INLINE_FAILURE ("gshared");
9277
9278                                 g_assert (cfg->generic_sharing_context && cmethod);
9279                                 g_assert (!addr);
9280
9281                                 /*
9282                                  * We are compiling a call to a
9283                                  * generic method from shared code,
9284                                  * which means that we have to look up
9285                                  * the method in the rgctx and do an
9286                                  * indirect call.
9287                                  */
9288                                 if (fsig->hasthis)
9289                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9290
9291                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9292                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9293                                 goto call_end;
9294                         }
9295
9296                         /* Direct calls to icalls */
9297                         if (direct_icall) {
9298                                 MonoMethod *wrapper;
9299                                 int costs;
9300
9301                                 /* Inline the wrapper */
9302                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9303
9304                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE, &bblock);
9305                                 g_assert (costs > 0);
9306                                 cfg->real_offset += 5;
9307
9308                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9309                                         /* *sp is already set by inline_method */
9310                                         sp++;
9311                                         push_res = FALSE;
9312                                 }
9313
9314                                 inline_costs += costs;
9315
9316                                 goto call_end;
9317                         }
9318
9319                         /* Array methods */
9320                         if (array_rank) {
9321                                 MonoInst *addr;
9322
9323                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9324                                         MonoInst *val = sp [fsig->param_count];
9325
9326                                         if (val->type == STACK_OBJ) {
9327                                                 MonoInst *iargs [2];
9328
9329                                                 iargs [0] = sp [0];
9330                                                 iargs [1] = val;
9331
9332                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9333                                         }
9334
9335                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9336                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9337                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9338                                                 emit_write_barrier (cfg, addr, val);
9339                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cfg, cmethod->klass))
9340                                                 GSHAREDVT_FAILURE (*ip);
9341                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9342                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9343
9344                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9345                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9346                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9347                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9348                                         CHECK_TYPELOAD (cmethod->klass);
9349
9350                                         readonly = FALSE;
9351                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9352                                         ins = addr;
9353                                 } else {
9354                                         g_assert_not_reached ();
9355                                 }
9356
9357                                 emit_widen = FALSE;
9358                                 goto call_end;
9359                         }
9360
9361                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL);
9362                         if (ins)
9363                                 goto call_end;
9364
9365                         /* Tail prefix / tail call optimization */
9366
9367                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9368                         /* FIXME: runtime generic context pointer for jumps? */
9369                         /* FIXME: handle this for generic sharing eventually */
9370                         if ((ins_flag & MONO_INST_TAILCALL) &&
9371                                 !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9372                                 supported_tail_call = TRUE;
9373
9374                         if (supported_tail_call) {
9375                                 MonoCallInst *call;
9376
9377                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9378                                 INLINE_FAILURE ("tail call");
9379
9380                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9381
9382                                 if (ARCH_HAVE_OP_TAIL_CALL) {
9383                                         /* Handle tail calls similarly to normal calls */
9384                                         tail_call = TRUE;
9385                                 } else {
9386                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9387
9388                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9389                                         call->tail_call = TRUE;
9390                                         call->method = cmethod;
9391                                         call->signature = mono_method_signature (cmethod);
9392
9393                                         /*
9394                                          * We implement tail calls by storing the actual arguments into the
9395                                          * argument variables, then emitting a CEE_JMP.
9396                                          */
9397                                         for (i = 0; i < n; ++i) {
9398                                                 /* Prevent argument from being register allocated */
9399                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9400                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9401                                         }
9402                                         ins = (MonoInst*)call;
9403                                         ins->inst_p0 = cmethod;
9404                                         ins->inst_p1 = arg_array [0];
9405                                         MONO_ADD_INS (bblock, ins);
9406                                         link_bblock (cfg, bblock, end_bblock);
9407                                         start_new_bblock = 1;
9408
9409                                         // FIXME: Eliminate unreachable epilogs
9410
9411                                         /*
9412                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9413                                          * only reachable from this call.
9414                                          */
9415                                         GET_BBLOCK (cfg, tblock, ip + 5);
9416                                         if (tblock == bblock || tblock->in_count == 0)
9417                                                 skip_ret = TRUE;
9418                                         push_res = FALSE;
9419
9420                                         goto call_end;
9421                                 }
9422                         }
9423
9424                         /*
9425                          * Synchronized wrappers.
9426                          * Its hard to determine where to replace a method with its synchronized
9427                          * wrapper without causing an infinite recursion. The current solution is
9428                          * to add the synchronized wrapper in the trampolines, and to
9429                          * change the called method to a dummy wrapper, and resolve that wrapper
9430                          * to the real method in mono_jit_compile_method ().
9431                          */
9432                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9433                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9434                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9435                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9436                         }
9437
9438                         /* Common call */
9439                         INLINE_FAILURE ("call");
9440                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual ? sp [0] : NULL,
9441                                                                                           imt_arg, vtable_arg);
9442
9443                         if (tail_call) {
9444                                 link_bblock (cfg, bblock, end_bblock);
9445                                 start_new_bblock = 1;
9446
9447                                 // FIXME: Eliminate unreachable epilogs
9448
9449                                 /*
9450                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9451                                  * only reachable from this call.
9452                                  */
9453                                 GET_BBLOCK (cfg, tblock, ip + 5);
9454                                 if (tblock == bblock || tblock->in_count == 0)
9455                                         skip_ret = TRUE;
9456                                 push_res = FALSE;
9457                         }
9458
9459                         call_end:
9460
9461                         /* End of call, INS should contain the result of the call, if any */
9462
9463                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9464                                 g_assert (ins);
9465                                 if (emit_widen)
9466                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9467                                 else
9468                                         *sp++ = ins;
9469                         }
9470
9471                         if (keep_this_alive) {
9472                                 MonoInst *dummy_use;
9473
9474                                 /* See mono_emit_method_call_full () */
9475                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9476                         }
9477
9478                         CHECK_CFG_EXCEPTION;
9479
9480                         ip += 5;
9481                         if (skip_ret) {
9482                                 g_assert (*ip == CEE_RET);
9483                                 ip += 1;
9484                         }
9485                         ins_flag = 0;
9486                         constrained_class = NULL;
9487                         if (need_seq_point)
9488                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9489                         break;
9490                 }
9491                 case CEE_RET:
9492                         if (cfg->method != method) {
9493                                 /* return from inlined method */
9494                                 /*
9495                                  * If in_count == 0, that means the ret is unreachable due to
9496                                  * being preceeded by a throw. In that case, inline_method () will
9497                                  * handle setting the return value
9498                                  * (test case: test_0_inline_throw ()).
9499                                  */
9500                                 if (return_var && cfg->cbb->in_count) {
9501                                         MonoType *ret_type = mono_method_signature (method)->ret;
9502
9503                                         MonoInst *store;
9504                                         CHECK_STACK (1);
9505                                         --sp;
9506
9507                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9508                                                 UNVERIFIED;
9509
9510                                         //g_assert (returnvar != -1);
9511                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9512                                         cfg->ret_var_set = TRUE;
9513                                 }
9514                         } else {
9515                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9516
9517                                 if (cfg->lmf_var && cfg->cbb->in_count)
9518                                         emit_pop_lmf (cfg);
9519
9520                                 if (cfg->ret) {
9521                                         MonoType *ret_type = mini_get_underlying_type (cfg, mono_method_signature (method)->ret);
9522
9523                                         if (seq_points && !sym_seq_points) {
9524                                                 /*
9525                                                  * Place a seq point here too even through the IL stack is not
9526                                                  * empty, so a step over on
9527                                                  * call <FOO>
9528                                                  * ret
9529                                                  * will work correctly.
9530                                                  */
9531                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9532                                                 MONO_ADD_INS (cfg->cbb, ins);
9533                                         }
9534
9535                                         g_assert (!return_var);
9536                                         CHECK_STACK (1);
9537                                         --sp;
9538
9539                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9540                                                 UNVERIFIED;
9541
9542                                         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
9543                                                 MonoInst *ret_addr;
9544
9545                                                 if (!cfg->vret_addr) {
9546                                                         MonoInst *ins;
9547
9548                                                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, (*sp));
9549                                                 } else {
9550                                                         EMIT_NEW_RETLOADA (cfg, ret_addr);
9551
9552                                                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, (*sp)->dreg);
9553                                                         ins->klass = mono_class_from_mono_type (ret_type);
9554                                                 }
9555                                         } else {
9556 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
9557                                                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
9558                                                         MonoInst *iargs [1];
9559                                                         MonoInst *conv;
9560
9561                                                         iargs [0] = *sp;
9562                                                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
9563                                                         mono_arch_emit_setret (cfg, method, conv);
9564                                                 } else {
9565                                                         mono_arch_emit_setret (cfg, method, *sp);
9566                                                 }
9567 #else
9568                                                 mono_arch_emit_setret (cfg, method, *sp);
9569 #endif
9570                                         }
9571                                 }
9572                         }
9573                         if (sp != stack_start)
9574                                 UNVERIFIED;
9575                         MONO_INST_NEW (cfg, ins, OP_BR);
9576                         ip++;
9577                         ins->inst_target_bb = end_bblock;
9578                         MONO_ADD_INS (bblock, ins);
9579                         link_bblock (cfg, bblock, end_bblock);
9580                         start_new_bblock = 1;
9581                         break;
9582                 case CEE_BR_S:
9583                         CHECK_OPSIZE (2);
9584                         MONO_INST_NEW (cfg, ins, OP_BR);
9585                         ip++;
9586                         target = ip + 1 + (signed char)(*ip);
9587                         ++ip;
9588                         GET_BBLOCK (cfg, tblock, target);
9589                         link_bblock (cfg, bblock, tblock);
9590                         ins->inst_target_bb = tblock;
9591                         if (sp != stack_start) {
9592                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9593                                 sp = stack_start;
9594                                 CHECK_UNVERIFIABLE (cfg);
9595                         }
9596                         MONO_ADD_INS (bblock, ins);
9597                         start_new_bblock = 1;
9598                         inline_costs += BRANCH_COST;
9599                         break;
9600                 case CEE_BEQ_S:
9601                 case CEE_BGE_S:
9602                 case CEE_BGT_S:
9603                 case CEE_BLE_S:
9604                 case CEE_BLT_S:
9605                 case CEE_BNE_UN_S:
9606                 case CEE_BGE_UN_S:
9607                 case CEE_BGT_UN_S:
9608                 case CEE_BLE_UN_S:
9609                 case CEE_BLT_UN_S:
9610                         CHECK_OPSIZE (2);
9611                         CHECK_STACK (2);
9612                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9613                         ip++;
9614                         target = ip + 1 + *(signed char*)ip;
9615                         ip++;
9616
9617                         ADD_BINCOND (NULL);
9618
9619                         sp = stack_start;
9620                         inline_costs += BRANCH_COST;
9621                         break;
9622                 case CEE_BR:
9623                         CHECK_OPSIZE (5);
9624                         MONO_INST_NEW (cfg, ins, OP_BR);
9625                         ip++;
9626
9627                         target = ip + 4 + (gint32)read32(ip);
9628                         ip += 4;
9629                         GET_BBLOCK (cfg, tblock, target);
9630                         link_bblock (cfg, bblock, tblock);
9631                         ins->inst_target_bb = tblock;
9632                         if (sp != stack_start) {
9633                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9634                                 sp = stack_start;
9635                                 CHECK_UNVERIFIABLE (cfg);
9636                         }
9637
9638                         MONO_ADD_INS (bblock, ins);
9639
9640                         start_new_bblock = 1;
9641                         inline_costs += BRANCH_COST;
9642                         break;
9643                 case CEE_BRFALSE_S:
9644                 case CEE_BRTRUE_S:
9645                 case CEE_BRFALSE:
9646                 case CEE_BRTRUE: {
9647                         MonoInst *cmp;
9648                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9649                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9650                         guint32 opsize = is_short ? 1 : 4;
9651
9652                         CHECK_OPSIZE (opsize);
9653                         CHECK_STACK (1);
9654                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9655                                 UNVERIFIED;
9656                         ip ++;
9657                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9658                         ip += opsize;
9659
9660                         sp--;
9661
9662                         GET_BBLOCK (cfg, tblock, target);
9663                         link_bblock (cfg, bblock, tblock);
9664                         GET_BBLOCK (cfg, tblock, ip);
9665                         link_bblock (cfg, bblock, tblock);
9666
9667                         if (sp != stack_start) {
9668                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9669                                 CHECK_UNVERIFIABLE (cfg);
9670                         }
9671
9672                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9673                         cmp->sreg1 = sp [0]->dreg;
9674                         type_from_op (cfg, cmp, sp [0], NULL);
9675                         CHECK_TYPE (cmp);
9676
9677 #if SIZEOF_REGISTER == 4
9678                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9679                                 /* Convert it to OP_LCOMPARE */
9680                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9681                                 ins->type = STACK_I8;
9682                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9683                                 ins->inst_l = 0;
9684                                 MONO_ADD_INS (bblock, ins);
9685                                 cmp->opcode = OP_LCOMPARE;
9686                                 cmp->sreg2 = ins->dreg;
9687                         }
9688 #endif
9689                         MONO_ADD_INS (bblock, cmp);
9690
9691                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9692                         type_from_op (cfg, ins, sp [0], NULL);
9693                         MONO_ADD_INS (bblock, ins);
9694                         ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9695                         GET_BBLOCK (cfg, tblock, target);
9696                         ins->inst_true_bb = tblock;
9697                         GET_BBLOCK (cfg, tblock, ip);
9698                         ins->inst_false_bb = tblock;
9699                         start_new_bblock = 2;
9700
9701                         sp = stack_start;
9702                         inline_costs += BRANCH_COST;
9703                         break;
9704                 }
9705                 case CEE_BEQ:
9706                 case CEE_BGE:
9707                 case CEE_BGT:
9708                 case CEE_BLE:
9709                 case CEE_BLT:
9710                 case CEE_BNE_UN:
9711                 case CEE_BGE_UN:
9712                 case CEE_BGT_UN:
9713                 case CEE_BLE_UN:
9714                 case CEE_BLT_UN:
9715                         CHECK_OPSIZE (5);
9716                         CHECK_STACK (2);
9717                         MONO_INST_NEW (cfg, ins, *ip);
9718                         ip++;
9719                         target = ip + 4 + (gint32)read32(ip);
9720                         ip += 4;
9721
9722                         ADD_BINCOND (NULL);
9723
9724                         sp = stack_start;
9725                         inline_costs += BRANCH_COST;
9726                         break;
9727                 case CEE_SWITCH: {
9728                         MonoInst *src1;
9729                         MonoBasicBlock **targets;
9730                         MonoBasicBlock *default_bblock;
9731                         MonoJumpInfoBBTable *table;
9732                         int offset_reg = alloc_preg (cfg);
9733                         int target_reg = alloc_preg (cfg);
9734                         int table_reg = alloc_preg (cfg);
9735                         int sum_reg = alloc_preg (cfg);
9736                         gboolean use_op_switch;
9737
9738                         CHECK_OPSIZE (5);
9739                         CHECK_STACK (1);
9740                         n = read32 (ip + 1);
9741                         --sp;
9742                         src1 = sp [0];
9743                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9744                                 UNVERIFIED;
9745
9746                         ip += 5;
9747                         CHECK_OPSIZE (n * sizeof (guint32));
9748                         target = ip + n * sizeof (guint32);
9749
9750                         GET_BBLOCK (cfg, default_bblock, target);
9751                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9752
9753                         targets = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9754                         for (i = 0; i < n; ++i) {
9755                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9756                                 targets [i] = tblock;
9757                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9758                                 ip += 4;
9759                         }
9760
9761                         if (sp != stack_start) {
9762                                 /*
9763                                  * Link the current bb with the targets as well, so handle_stack_args
9764                                  * will set their in_stack correctly.
9765                                  */
9766                                 link_bblock (cfg, bblock, default_bblock);
9767                                 for (i = 0; i < n; ++i)
9768                                         link_bblock (cfg, bblock, targets [i]);
9769
9770                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9771                                 sp = stack_start;
9772                                 CHECK_UNVERIFIABLE (cfg);
9773                         }
9774
9775                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9776                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9777                         bblock = cfg->cbb;
9778
9779                         for (i = 0; i < n; ++i)
9780                                 link_bblock (cfg, bblock, targets [i]);
9781
9782                         table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9783                         table->table = targets;
9784                         table->table_size = n;
9785
9786                         use_op_switch = FALSE;
9787 #ifdef TARGET_ARM
9788                         /* ARM implements SWITCH statements differently */
9789                         /* FIXME: Make it use the generic implementation */
9790                         if (!cfg->compile_aot)
9791                                 use_op_switch = TRUE;
9792 #endif
9793
9794                         if (COMPILE_LLVM (cfg))
9795                                 use_op_switch = TRUE;
9796
9797                         cfg->cbb->has_jump_table = 1;
9798
9799                         if (use_op_switch) {
9800                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9801                                 ins->sreg1 = src1->dreg;
9802                                 ins->inst_p0 = table;
9803                                 ins->inst_many_bb = targets;
9804                                 ins->klass = GUINT_TO_POINTER (n);
9805                                 MONO_ADD_INS (cfg->cbb, ins);
9806                         } else {
9807                                 if (sizeof (gpointer) == 8)
9808                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9809                                 else
9810                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9811
9812 #if SIZEOF_REGISTER == 8
9813                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9814                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9815 #endif
9816
9817                                 if (cfg->compile_aot) {
9818                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9819                                 } else {
9820                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9821                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9822                                         ins->inst_p0 = table;
9823                                         ins->dreg = table_reg;
9824                                         MONO_ADD_INS (cfg->cbb, ins);
9825                                 }
9826
9827                                 /* FIXME: Use load_memindex */
9828                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9829                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9830                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9831                         }
9832                         start_new_bblock = 1;
9833                         inline_costs += (BRANCH_COST * 2);
9834                         break;
9835                 }
9836                 case CEE_LDIND_I1:
9837                 case CEE_LDIND_U1:
9838                 case CEE_LDIND_I2:
9839                 case CEE_LDIND_U2:
9840                 case CEE_LDIND_I4:
9841                 case CEE_LDIND_U4:
9842                 case CEE_LDIND_I8:
9843                 case CEE_LDIND_I:
9844                 case CEE_LDIND_R4:
9845                 case CEE_LDIND_R8:
9846                 case CEE_LDIND_REF:
9847                         CHECK_STACK (1);
9848                         --sp;
9849
9850                         switch (*ip) {
9851                         case CEE_LDIND_R4:
9852                         case CEE_LDIND_R8:
9853                                 dreg = alloc_freg (cfg);
9854                                 break;
9855                         case CEE_LDIND_I8:
9856                                 dreg = alloc_lreg (cfg);
9857                                 break;
9858                         case CEE_LDIND_REF:
9859                                 dreg = alloc_ireg_ref (cfg);
9860                                 break;
9861                         default:
9862                                 dreg = alloc_preg (cfg);
9863                         }
9864
9865                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
9866                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
9867                         if (*ip == CEE_LDIND_R4)
9868                                 ins->type = cfg->r4_stack_type;
9869                         ins->flags |= ins_flag;
9870                         MONO_ADD_INS (bblock, ins);
9871                         *sp++ = ins;
9872                         if (ins_flag & MONO_INST_VOLATILE) {
9873                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9874                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9875                         }
9876                         ins_flag = 0;
9877                         ++ip;
9878                         break;
9879                 case CEE_STIND_REF:
9880                 case CEE_STIND_I1:
9881                 case CEE_STIND_I2:
9882                 case CEE_STIND_I4:
9883                 case CEE_STIND_I8:
9884                 case CEE_STIND_R4:
9885                 case CEE_STIND_R8:
9886                 case CEE_STIND_I:
9887                         CHECK_STACK (2);
9888                         sp -= 2;
9889
9890                         if (ins_flag & MONO_INST_VOLATILE) {
9891                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9892                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9893                         }
9894
9895                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9896                         ins->flags |= ins_flag;
9897                         ins_flag = 0;
9898
9899                         MONO_ADD_INS (bblock, ins);
9900
9901                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0)))
9902                                 emit_write_barrier (cfg, sp [0], sp [1]);
9903
9904                         inline_costs += 1;
9905                         ++ip;
9906                         break;
9907
9908                 case CEE_MUL:
9909                         CHECK_STACK (2);
9910
9911                         MONO_INST_NEW (cfg, ins, (*ip));
9912                         sp -= 2;
9913                         ins->sreg1 = sp [0]->dreg;
9914                         ins->sreg2 = sp [1]->dreg;
9915                         type_from_op (cfg, ins, sp [0], sp [1]);
9916                         CHECK_TYPE (ins);
9917                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9918
9919                         /* Use the immediate opcodes if possible */
9920                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9921                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9922                                 if (imm_opcode != -1) {
9923                                         ins->opcode = imm_opcode;
9924                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9925                                         ins->sreg2 = -1;
9926
9927                                         NULLIFY_INS (sp [1]);
9928                                 }
9929                         }
9930
9931                         MONO_ADD_INS ((cfg)->cbb, (ins));
9932
9933                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
9934                         ip++;
9935                         break;
9936                 case CEE_ADD:
9937                 case CEE_SUB:
9938                 case CEE_DIV:
9939                 case CEE_DIV_UN:
9940                 case CEE_REM:
9941                 case CEE_REM_UN:
9942                 case CEE_AND:
9943                 case CEE_OR:
9944                 case CEE_XOR:
9945                 case CEE_SHL:
9946                 case CEE_SHR:
9947                 case CEE_SHR_UN:
9948                         CHECK_STACK (2);
9949
9950                         MONO_INST_NEW (cfg, ins, (*ip));
9951                         sp -= 2;
9952                         ins->sreg1 = sp [0]->dreg;
9953                         ins->sreg2 = sp [1]->dreg;
9954                         type_from_op (cfg, ins, sp [0], sp [1]);
9955                         CHECK_TYPE (ins);
9956                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9957                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9958
9959                         /* FIXME: Pass opcode to is_inst_imm */
9960
9961                         /* Use the immediate opcodes if possible */
9962                         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)) {
9963                                 int imm_opcode;
9964
9965                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9966 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
9967                                 /* Keep emulated opcodes which are optimized away later */
9968                                 if ((ins->opcode == OP_IREM_UN || ins->opcode == OP_IDIV_UN_IMM) && (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) && sp [1]->opcode == OP_ICONST && mono_is_power_of_two (sp [1]->inst_c0) >= 0) {
9969                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
9970                                 }
9971 #endif
9972                                 if (imm_opcode != -1) {
9973                                         ins->opcode = imm_opcode;
9974                                         if (sp [1]->opcode == OP_I8CONST) {
9975 #if SIZEOF_REGISTER == 8
9976                                                 ins->inst_imm = sp [1]->inst_l;
9977 #else
9978                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9979                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9980 #endif
9981                                         }
9982                                         else
9983                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9984                                         ins->sreg2 = -1;
9985
9986                                         /* Might be followed by an instruction added by add_widen_op */
9987                                         if (sp [1]->next == NULL)
9988                                                 NULLIFY_INS (sp [1]);
9989                                 }
9990                         }
9991                         MONO_ADD_INS ((cfg)->cbb, (ins));
9992
9993                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
9994                         ip++;
9995                         break;
9996                 case CEE_NEG:
9997                 case CEE_NOT:
9998                 case CEE_CONV_I1:
9999                 case CEE_CONV_I2:
10000                 case CEE_CONV_I4:
10001                 case CEE_CONV_R4:
10002                 case CEE_CONV_R8:
10003                 case CEE_CONV_U4:
10004                 case CEE_CONV_I8:
10005                 case CEE_CONV_U8:
10006                 case CEE_CONV_OVF_I8:
10007                 case CEE_CONV_OVF_U8:
10008                 case CEE_CONV_R_UN:
10009                         CHECK_STACK (1);
10010
10011                         /* Special case this earlier so we have long constants in the IR */
10012                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10013                                 int data = sp [-1]->inst_c0;
10014                                 sp [-1]->opcode = OP_I8CONST;
10015                                 sp [-1]->type = STACK_I8;
10016 #if SIZEOF_REGISTER == 8
10017                                 if ((*ip) == CEE_CONV_U8)
10018                                         sp [-1]->inst_c0 = (guint32)data;
10019                                 else
10020                                         sp [-1]->inst_c0 = data;
10021 #else
10022                                 sp [-1]->inst_ls_word = data;
10023                                 if ((*ip) == CEE_CONV_U8)
10024                                         sp [-1]->inst_ms_word = 0;
10025                                 else
10026                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10027 #endif
10028                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10029                         }
10030                         else {
10031                                 ADD_UNOP (*ip);
10032                         }
10033                         ip++;
10034                         break;
10035                 case CEE_CONV_OVF_I4:
10036                 case CEE_CONV_OVF_I1:
10037                 case CEE_CONV_OVF_I2:
10038                 case CEE_CONV_OVF_I:
10039                 case CEE_CONV_OVF_U:
10040                         CHECK_STACK (1);
10041
10042                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10043                                 ADD_UNOP (CEE_CONV_OVF_I8);
10044                                 ADD_UNOP (*ip);
10045                         } else {
10046                                 ADD_UNOP (*ip);
10047                         }
10048                         ip++;
10049                         break;
10050                 case CEE_CONV_OVF_U1:
10051                 case CEE_CONV_OVF_U2:
10052                 case CEE_CONV_OVF_U4:
10053                         CHECK_STACK (1);
10054
10055                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10056                                 ADD_UNOP (CEE_CONV_OVF_U8);
10057                                 ADD_UNOP (*ip);
10058                         } else {
10059                                 ADD_UNOP (*ip);
10060                         }
10061                         ip++;
10062                         break;
10063                 case CEE_CONV_OVF_I1_UN:
10064                 case CEE_CONV_OVF_I2_UN:
10065                 case CEE_CONV_OVF_I4_UN:
10066                 case CEE_CONV_OVF_I8_UN:
10067                 case CEE_CONV_OVF_U1_UN:
10068                 case CEE_CONV_OVF_U2_UN:
10069                 case CEE_CONV_OVF_U4_UN:
10070                 case CEE_CONV_OVF_U8_UN:
10071                 case CEE_CONV_OVF_I_UN:
10072                 case CEE_CONV_OVF_U_UN:
10073                 case CEE_CONV_U2:
10074                 case CEE_CONV_U1:
10075                 case CEE_CONV_I:
10076                 case CEE_CONV_U:
10077                         CHECK_STACK (1);
10078                         ADD_UNOP (*ip);
10079                         CHECK_CFG_EXCEPTION;
10080                         ip++;
10081                         break;
10082                 case CEE_ADD_OVF:
10083                 case CEE_ADD_OVF_UN:
10084                 case CEE_MUL_OVF:
10085                 case CEE_MUL_OVF_UN:
10086                 case CEE_SUB_OVF:
10087                 case CEE_SUB_OVF_UN:
10088                         CHECK_STACK (2);
10089                         ADD_BINOP (*ip);
10090                         ip++;
10091                         break;
10092                 case CEE_CPOBJ:
10093                         GSHAREDVT_FAILURE (*ip);
10094                         CHECK_OPSIZE (5);
10095                         CHECK_STACK (2);
10096                         token = read32 (ip + 1);
10097                         klass = mini_get_class (method, token, generic_context);
10098                         CHECK_TYPELOAD (klass);
10099                         sp -= 2;
10100                         if (generic_class_is_reference_type (cfg, klass)) {
10101                                 MonoInst *store, *load;
10102                                 int dreg = alloc_ireg_ref (cfg);
10103
10104                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10105                                 load->flags |= ins_flag;
10106                                 MONO_ADD_INS (cfg->cbb, load);
10107
10108                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10109                                 store->flags |= ins_flag;
10110                                 MONO_ADD_INS (cfg->cbb, store);
10111
10112                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10113                                         emit_write_barrier (cfg, sp [0], sp [1]);
10114                         } else {
10115                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10116                         }
10117                         ins_flag = 0;
10118                         ip += 5;
10119                         break;
10120                 case CEE_LDOBJ: {
10121                         int loc_index = -1;
10122                         int stloc_len = 0;
10123
10124                         CHECK_OPSIZE (5);
10125                         CHECK_STACK (1);
10126                         --sp;
10127                         token = read32 (ip + 1);
10128                         klass = mini_get_class (method, token, generic_context);
10129                         CHECK_TYPELOAD (klass);
10130
10131                         /* Optimize the common ldobj+stloc combination */
10132                         switch (ip [5]) {
10133                         case CEE_STLOC_S:
10134                                 loc_index = ip [6];
10135                                 stloc_len = 2;
10136                                 break;
10137                         case CEE_STLOC_0:
10138                         case CEE_STLOC_1:
10139                         case CEE_STLOC_2:
10140                         case CEE_STLOC_3:
10141                                 loc_index = ip [5] - CEE_STLOC_0;
10142                                 stloc_len = 1;
10143                                 break;
10144                         default:
10145                                 break;
10146                         }
10147
10148                         if ((loc_index != -1) && ip_in_bb (cfg, bblock, ip + 5)) {
10149                                 CHECK_LOCAL (loc_index);
10150
10151                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10152                                 ins->dreg = cfg->locals [loc_index]->dreg;
10153                                 ins->flags |= ins_flag;
10154                                 ip += 5;
10155                                 ip += stloc_len;
10156                                 if (ins_flag & MONO_INST_VOLATILE) {
10157                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10158                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10159                                 }
10160                                 ins_flag = 0;
10161                                 break;
10162                         }
10163
10164                         /* Optimize the ldobj+stobj combination */
10165                         /* The reference case ends up being a load+store anyway */
10166                         /* Skip this if the operation is volatile. */
10167                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass) && !(ins_flag & MONO_INST_VOLATILE)) {
10168                                 CHECK_STACK (1);
10169
10170                                 sp --;
10171
10172                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10173
10174                                 ip += 5 + 5;
10175                                 ins_flag = 0;
10176                                 break;
10177                         }
10178
10179                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10180                         ins->flags |= ins_flag;
10181                         *sp++ = ins;
10182
10183                         if (ins_flag & MONO_INST_VOLATILE) {
10184                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10185                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10186                         }
10187
10188                         ip += 5;
10189                         ins_flag = 0;
10190                         inline_costs += 1;
10191                         break;
10192                 }
10193                 case CEE_LDSTR:
10194                         CHECK_STACK_OVF (1);
10195                         CHECK_OPSIZE (5);
10196                         n = read32 (ip + 1);
10197
10198                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10199                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10200                                 ins->type = STACK_OBJ;
10201                                 *sp = ins;
10202                         }
10203                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10204                                 MonoInst *iargs [1];
10205                                 char *str = mono_method_get_wrapper_data (method, n);
10206
10207                                 if (cfg->compile_aot)
10208                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10209                                 else
10210                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10211                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10212                         } else {
10213                                 if (cfg->opt & MONO_OPT_SHARED) {
10214                                         MonoInst *iargs [3];
10215
10216                                         if (cfg->compile_aot) {
10217                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10218                                         }
10219                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10220                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10221                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10222                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10223                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10224                                 } else {
10225                                         if (bblock->out_of_line) {
10226                                                 MonoInst *iargs [2];
10227
10228                                                 if (image == mono_defaults.corlib) {
10229                                                         /*
10230                                                          * Avoid relocations in AOT and save some space by using a
10231                                                          * version of helper_ldstr specialized to mscorlib.
10232                                                          */
10233                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10234                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10235                                                 } else {
10236                                                         /* Avoid creating the string object */
10237                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10238                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10239                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10240                                                 }
10241                                         }
10242                                         else
10243                                         if (cfg->compile_aot) {
10244                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10245                                                 *sp = ins;
10246                                                 MONO_ADD_INS (bblock, ins);
10247                                         }
10248                                         else {
10249                                                 NEW_PCONST (cfg, ins, NULL);
10250                                                 ins->type = STACK_OBJ;
10251                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10252                                                 if (!ins->inst_p0)
10253                                                         OUT_OF_MEMORY_FAILURE;
10254
10255                                                 *sp = ins;
10256                                                 MONO_ADD_INS (bblock, ins);
10257                                         }
10258                                 }
10259                         }
10260
10261                         sp++;
10262                         ip += 5;
10263                         break;
10264                 case CEE_NEWOBJ: {
10265                         MonoInst *iargs [2];
10266                         MonoMethodSignature *fsig;
10267                         MonoInst this_ins;
10268                         MonoInst *alloc;
10269                         MonoInst *vtable_arg = NULL;
10270
10271                         CHECK_OPSIZE (5);
10272                         token = read32 (ip + 1);
10273                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10274                         if (!cmethod || mono_loader_get_last_error ())
10275                                 LOAD_ERROR;
10276                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10277                         CHECK_CFG_ERROR;
10278
10279                         mono_save_token_info (cfg, image, token, cmethod);
10280
10281                         if (!mono_class_init (cmethod->klass))
10282                                 TYPE_LOAD_ERROR (cmethod->klass);
10283
10284                         context_used = mini_method_check_context_used (cfg, cmethod);
10285
10286                         if (mono_security_core_clr_enabled ())
10287                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
10288
10289                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10290                                 emit_generic_class_init (cfg, cmethod->klass, &bblock);
10291                                 CHECK_TYPELOAD (cmethod->klass);
10292                         }
10293
10294                         /*
10295                         if (cfg->gsharedvt) {
10296                                 if (mini_is_gsharedvt_variable_signature (sig))
10297                                         GSHAREDVT_FAILURE (*ip);
10298                         }
10299                         */
10300
10301                         n = fsig->param_count;
10302                         CHECK_STACK (n);
10303
10304                         /*
10305                          * Generate smaller code for the common newobj <exception> instruction in
10306                          * argument checking code.
10307                          */
10308                         if (bblock->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10309                                 is_exception_class (cmethod->klass) && n <= 2 &&
10310                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10311                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10312                                 MonoInst *iargs [3];
10313
10314                                 sp -= n;
10315
10316                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10317                                 switch (n) {
10318                                 case 0:
10319                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10320                                         break;
10321                                 case 1:
10322                                         iargs [1] = sp [0];
10323                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10324                                         break;
10325                                 case 2:
10326                                         iargs [1] = sp [0];
10327                                         iargs [2] = sp [1];
10328                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10329                                         break;
10330                                 default:
10331                                         g_assert_not_reached ();
10332                                 }
10333
10334                                 ip += 5;
10335                                 inline_costs += 5;
10336                                 break;
10337                         }
10338
10339                         /* move the args to allow room for 'this' in the first position */
10340                         while (n--) {
10341                                 --sp;
10342                                 sp [1] = sp [0];
10343                         }
10344
10345                         /* check_call_signature () requires sp[0] to be set */
10346                         this_ins.type = STACK_OBJ;
10347                         sp [0] = &this_ins;
10348                         if (check_call_signature (cfg, fsig, sp))
10349                                 UNVERIFIED;
10350
10351                         iargs [0] = NULL;
10352
10353                         if (mini_class_is_system_array (cmethod->klass)) {
10354                                 *sp = emit_get_rgctx_method (cfg, context_used,
10355                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10356
10357                                 /* Avoid varargs in the common case */
10358                                 if (fsig->param_count == 1)
10359                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10360                                 else if (fsig->param_count == 2)
10361                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10362                                 else if (fsig->param_count == 3)
10363                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10364                                 else if (fsig->param_count == 4)
10365                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10366                                 else
10367                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10368                         } else if (cmethod->string_ctor) {
10369                                 g_assert (!context_used);
10370                                 g_assert (!vtable_arg);
10371                                 /* we simply pass a null pointer */
10372                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10373                                 /* now call the string ctor */
10374                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10375                         } else {
10376                                 if (cmethod->klass->valuetype) {
10377                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10378                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10379                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10380
10381                                         alloc = NULL;
10382
10383                                         /*
10384                                          * The code generated by mini_emit_virtual_call () expects
10385                                          * iargs [0] to be a boxed instance, but luckily the vcall
10386                                          * will be transformed into a normal call there.
10387                                          */
10388                                 } else if (context_used) {
10389                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10390                                         *sp = alloc;
10391                                 } else {
10392                                         MonoVTable *vtable = NULL;
10393
10394                                         if (!cfg->compile_aot)
10395                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10396                                         CHECK_TYPELOAD (cmethod->klass);
10397
10398                                         /*
10399                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10400                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10401                                          * As a workaround, we call class cctors before allocating objects.
10402                                          */
10403                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10404                                                 emit_class_init (cfg, cmethod->klass, &bblock);
10405                                                 if (cfg->verbose_level > 2)
10406                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10407                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10408                                         }
10409
10410                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10411                                         *sp = alloc;
10412                                 }
10413                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10414
10415                                 if (alloc)
10416                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10417
10418                                 /* Now call the actual ctor */
10419                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &bblock, &inline_costs);
10420                                 CHECK_CFG_EXCEPTION;
10421                         }
10422
10423                         if (alloc == NULL) {
10424                                 /* Valuetype */
10425                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10426                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10427                                 *sp++= ins;
10428                         } else {
10429                                 *sp++ = alloc;
10430                         }
10431
10432                         ip += 5;
10433                         inline_costs += 5;
10434                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10435                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10436                         break;
10437                 }
10438                 case CEE_CASTCLASS:
10439                         CHECK_STACK (1);
10440                         --sp;
10441                         CHECK_OPSIZE (5);
10442                         token = read32 (ip + 1);
10443                         klass = mini_get_class (method, token, generic_context);
10444                         CHECK_TYPELOAD (klass);
10445                         if (sp [0]->type != STACK_OBJ)
10446                                 UNVERIFIED;
10447
10448                         ins = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10449                         CHECK_CFG_EXCEPTION;
10450
10451                         *sp ++ = ins;
10452                         ip += 5;
10453                         break;
10454                 case CEE_ISINST: {
10455                         CHECK_STACK (1);
10456                         --sp;
10457                         CHECK_OPSIZE (5);
10458                         token = read32 (ip + 1);
10459                         klass = mini_get_class (method, token, generic_context);
10460                         CHECK_TYPELOAD (klass);
10461                         if (sp [0]->type != STACK_OBJ)
10462                                 UNVERIFIED;
10463
10464                         context_used = mini_class_check_context_used (cfg, klass);
10465
10466                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10467                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10468                                 MonoInst *args [3];
10469                                 int idx;
10470
10471                                 /* obj */
10472                                 args [0] = *sp;
10473
10474                                 /* klass */
10475                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10476
10477                                 /* inline cache*/
10478                                 if (cfg->compile_aot) {
10479                                         idx = get_castclass_cache_idx (cfg);
10480                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10481                                 } else {
10482                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
10483                                 }
10484
10485                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10486                                 ip += 5;
10487                                 inline_costs += 2;
10488                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10489                                 MonoMethod *mono_isinst;
10490                                 MonoInst *iargs [1];
10491                                 int costs;
10492
10493                                 mono_isinst = mono_marshal_get_isinst (klass);
10494                                 iargs [0] = sp [0];
10495
10496                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
10497                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10498                                 CHECK_CFG_EXCEPTION;
10499                                 g_assert (costs > 0);
10500
10501                                 ip += 5;
10502                                 cfg->real_offset += 5;
10503
10504                                 *sp++= iargs [0];
10505
10506                                 inline_costs += costs;
10507                         }
10508                         else {
10509                                 ins = handle_isinst (cfg, klass, *sp, context_used);
10510                                 CHECK_CFG_EXCEPTION;
10511                                 bblock = cfg->cbb;
10512                                 *sp ++ = ins;
10513                                 ip += 5;
10514                         }
10515                         break;
10516                 }
10517                 case CEE_UNBOX_ANY: {
10518                         MonoInst *res, *addr;
10519
10520                         CHECK_STACK (1);
10521                         --sp;
10522                         CHECK_OPSIZE (5);
10523                         token = read32 (ip + 1);
10524                         klass = mini_get_class (method, token, generic_context);
10525                         CHECK_TYPELOAD (klass);
10526
10527                         mono_save_token_info (cfg, image, token, klass);
10528
10529                         context_used = mini_class_check_context_used (cfg, klass);
10530
10531                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10532                                 res = handle_unbox_gsharedvt (cfg, klass, *sp, &bblock);
10533                                 inline_costs += 2;
10534                         } else if (generic_class_is_reference_type (cfg, klass)) {
10535                                 res = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10536                                 CHECK_CFG_EXCEPTION;
10537                         } else if (mono_class_is_nullable (klass)) {
10538                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10539                         } else {
10540                                 addr = handle_unbox (cfg, klass, sp, context_used);
10541                                 /* LDOBJ */
10542                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10543                                 res = ins;
10544                                 inline_costs += 2;
10545                         }
10546
10547                         *sp ++ = res;
10548                         ip += 5;
10549                         break;
10550                 }
10551                 case CEE_BOX: {
10552                         MonoInst *val;
10553                         MonoClass *enum_class;
10554                         MonoMethod *has_flag;
10555
10556                         CHECK_STACK (1);
10557                         --sp;
10558                         val = *sp;
10559                         CHECK_OPSIZE (5);
10560                         token = read32 (ip + 1);
10561                         klass = mini_get_class (method, token, generic_context);
10562                         CHECK_TYPELOAD (klass);
10563
10564                         mono_save_token_info (cfg, image, token, klass);
10565
10566                         context_used = mini_class_check_context_used (cfg, klass);
10567
10568                         if (generic_class_is_reference_type (cfg, klass)) {
10569                                 *sp++ = val;
10570                                 ip += 5;
10571                                 break;
10572                         }
10573
10574                         if (klass == mono_defaults.void_class)
10575                                 UNVERIFIED;
10576                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10577                                 UNVERIFIED;
10578                         /* frequent check in generic code: box (struct), brtrue */
10579
10580                         /*
10581                          * Look for:
10582                          *
10583                          *   <push int/long ptr>
10584                          *   <push int/long>
10585                          *   box MyFlags
10586                          *   constrained. MyFlags
10587                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10588                          *
10589                          * If we find this sequence and the operand types on box and constrained
10590                          * are equal, we can emit a specialized instruction sequence instead of
10591                          * the very slow HasFlag () call.
10592                          */
10593                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10594                             /* Cheap checks first. */
10595                             ip + 5 + 6 + 5 < end &&
10596                             ip [5] == CEE_PREFIX1 &&
10597                             ip [6] == CEE_CONSTRAINED_ &&
10598                             ip [11] == CEE_CALLVIRT &&
10599                             ip_in_bb (cfg, bblock, ip + 5 + 6 + 5) &&
10600                             mono_class_is_enum (klass) &&
10601                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10602                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10603                             has_flag->klass == mono_defaults.enum_class &&
10604                             !strcmp (has_flag->name, "HasFlag") &&
10605                             has_flag->signature->hasthis &&
10606                             has_flag->signature->param_count == 1) {
10607                                 CHECK_TYPELOAD (enum_class);
10608
10609                                 if (enum_class == klass) {
10610                                         MonoInst *enum_this, *enum_flag;
10611
10612                                         ip += 5 + 6 + 5;
10613                                         --sp;
10614
10615                                         enum_this = sp [0];
10616                                         enum_flag = sp [1];
10617
10618                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10619                                         break;
10620                                 }
10621                         }
10622
10623                         // FIXME: LLVM can't handle the inconsistent bb linking
10624                         if (!mono_class_is_nullable (klass) &&
10625                                 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) &&
10626                                 (ip [5] == CEE_BRTRUE ||
10627                                  ip [5] == CEE_BRTRUE_S ||
10628                                  ip [5] == CEE_BRFALSE ||
10629                                  ip [5] == CEE_BRFALSE_S)) {
10630                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10631                                 int dreg;
10632                                 MonoBasicBlock *true_bb, *false_bb;
10633
10634                                 ip += 5;
10635
10636                                 if (cfg->verbose_level > 3) {
10637                                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10638                                         printf ("<box+brtrue opt>\n");
10639                                 }
10640
10641                                 switch (*ip) {
10642                                 case CEE_BRTRUE_S:
10643                                 case CEE_BRFALSE_S:
10644                                         CHECK_OPSIZE (2);
10645                                         ip++;
10646                                         target = ip + 1 + (signed char)(*ip);
10647                                         ip++;
10648                                         break;
10649                                 case CEE_BRTRUE:
10650                                 case CEE_BRFALSE:
10651                                         CHECK_OPSIZE (5);
10652                                         ip++;
10653                                         target = ip + 4 + (gint)(read32 (ip));
10654                                         ip += 4;
10655                                         break;
10656                                 default:
10657                                         g_assert_not_reached ();
10658                                 }
10659
10660                                 /*
10661                                  * We need to link both bblocks, since it is needed for handling stack
10662                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10663                                  * Branching to only one of them would lead to inconsistencies, so
10664                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10665                                  */
10666                                 GET_BBLOCK (cfg, true_bb, target);
10667                                 GET_BBLOCK (cfg, false_bb, ip);
10668
10669                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10670                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10671
10672                                 if (sp != stack_start) {
10673                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10674                                         sp = stack_start;
10675                                         CHECK_UNVERIFIABLE (cfg);
10676                                 }
10677
10678                                 if (COMPILE_LLVM (cfg)) {
10679                                         dreg = alloc_ireg (cfg);
10680                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10681                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10682
10683                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10684                                 } else {
10685                                         /* The JIT can't eliminate the iconst+compare */
10686                                         MONO_INST_NEW (cfg, ins, OP_BR);
10687                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10688                                         MONO_ADD_INS (cfg->cbb, ins);
10689                                 }
10690
10691                                 start_new_bblock = 1;
10692                                 break;
10693                         }
10694
10695                         *sp++ = handle_box (cfg, val, klass, context_used, &bblock);
10696
10697                         CHECK_CFG_EXCEPTION;
10698                         ip += 5;
10699                         inline_costs += 1;
10700                         break;
10701                 }
10702                 case CEE_UNBOX: {
10703                         CHECK_STACK (1);
10704                         --sp;
10705                         CHECK_OPSIZE (5);
10706                         token = read32 (ip + 1);
10707                         klass = mini_get_class (method, token, generic_context);
10708                         CHECK_TYPELOAD (klass);
10709
10710                         mono_save_token_info (cfg, image, token, klass);
10711
10712                         context_used = mini_class_check_context_used (cfg, klass);
10713
10714                         if (mono_class_is_nullable (klass)) {
10715                                 MonoInst *val;
10716
10717                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10718                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10719
10720                                 *sp++= ins;
10721                         } else {
10722                                 ins = handle_unbox (cfg, klass, sp, context_used);
10723                                 *sp++ = ins;
10724                         }
10725                         ip += 5;
10726                         inline_costs += 2;
10727                         break;
10728                 }
10729                 case CEE_LDFLD:
10730                 case CEE_LDFLDA:
10731                 case CEE_STFLD:
10732                 case CEE_LDSFLD:
10733                 case CEE_LDSFLDA:
10734                 case CEE_STSFLD: {
10735                         MonoClassField *field;
10736 #ifndef DISABLE_REMOTING
10737                         int costs;
10738 #endif
10739                         guint foffset;
10740                         gboolean is_instance;
10741                         int op;
10742                         gpointer addr = NULL;
10743                         gboolean is_special_static;
10744                         MonoType *ftype;
10745                         MonoInst *store_val = NULL;
10746                         MonoInst *thread_ins;
10747
10748                         op = *ip;
10749                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10750                         if (is_instance) {
10751                                 if (op == CEE_STFLD) {
10752                                         CHECK_STACK (2);
10753                                         sp -= 2;
10754                                         store_val = sp [1];
10755                                 } else {
10756                                         CHECK_STACK (1);
10757                                         --sp;
10758                                 }
10759                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10760                                         UNVERIFIED;
10761                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10762                                         UNVERIFIED;
10763                         } else {
10764                                 if (op == CEE_STSFLD) {
10765                                         CHECK_STACK (1);
10766                                         sp--;
10767                                         store_val = sp [0];
10768                                 }
10769                         }
10770
10771                         CHECK_OPSIZE (5);
10772                         token = read32 (ip + 1);
10773                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10774                                 field = mono_method_get_wrapper_data (method, token);
10775                                 klass = field->parent;
10776                         }
10777                         else {
10778                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10779                                 CHECK_CFG_ERROR;
10780                         }
10781                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10782                                 FIELD_ACCESS_FAILURE (method, field);
10783                         mono_class_init (klass);
10784
10785                         /* if the class is Critical then transparent code cannot access it's fields */
10786                         if (!is_instance && mono_security_core_clr_enabled ())
10787                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10788
10789                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10790                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10791                         if (mono_security_core_clr_enabled ())
10792                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10793                         */
10794
10795                         /*
10796                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10797                          * the static case.
10798                          */
10799                         if (is_instance && field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
10800                                 switch (op) {
10801                                 case CEE_LDFLD:
10802                                         op = CEE_LDSFLD;
10803                                         break;
10804                                 case CEE_STFLD:
10805                                         op = CEE_STSFLD;
10806                                         break;
10807                                 case CEE_LDFLDA:
10808                                         op = CEE_LDSFLDA;
10809                                         break;
10810                                 default:
10811                                         g_assert_not_reached ();
10812                                 }
10813                                 is_instance = FALSE;
10814                         }
10815
10816                         context_used = mini_class_check_context_used (cfg, klass);
10817
10818                         /* INSTANCE CASE */
10819
10820                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10821                         if (op == CEE_STFLD) {
10822                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10823                                         UNVERIFIED;
10824 #ifndef DISABLE_REMOTING
10825                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10826                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10827                                         MonoInst *iargs [5];
10828
10829                                         GSHAREDVT_FAILURE (op);
10830
10831                                         iargs [0] = sp [0];
10832                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10833                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10834                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10835                                                     field->offset);
10836                                         iargs [4] = sp [1];
10837
10838                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10839                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10840                                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10841                                                 CHECK_CFG_EXCEPTION;
10842                                                 g_assert (costs > 0);
10843
10844                                                 cfg->real_offset += 5;
10845
10846                                                 inline_costs += costs;
10847                                         } else {
10848                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10849                                         }
10850                                 } else
10851 #endif
10852                                 {
10853                                         MonoInst *store;
10854
10855                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10856
10857                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10858                                                 MonoInst *offset_ins;
10859
10860                                                 context_used = mini_class_check_context_used (cfg, klass);
10861
10862                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10863                                                 dreg = alloc_ireg_mp (cfg);
10864                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10865                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10866                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10867                                         } else {
10868                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10869                                         }
10870                                         if (sp [0]->opcode != OP_LDADDR)
10871                                                 store->flags |= MONO_INST_FAULT;
10872
10873                                 if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
10874                                         /* insert call to write barrier */
10875                                         MonoInst *ptr;
10876                                         int dreg;
10877
10878                                         dreg = alloc_ireg_mp (cfg);
10879                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10880                                         emit_write_barrier (cfg, ptr, sp [1]);
10881                                 }
10882
10883                                         store->flags |= ins_flag;
10884                                 }
10885                                 ins_flag = 0;
10886                                 ip += 5;
10887                                 break;
10888                         }
10889
10890 #ifndef DISABLE_REMOTING
10891                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10892                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10893                                 MonoInst *iargs [4];
10894
10895                                 GSHAREDVT_FAILURE (op);
10896
10897                                 iargs [0] = sp [0];
10898                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10899                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10900                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10901                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10902                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10903                                                                                    iargs, ip, cfg->real_offset, TRUE, &bblock);
10904                                         CHECK_CFG_EXCEPTION;
10905                                         g_assert (costs > 0);
10906
10907                                         cfg->real_offset += 5;
10908
10909                                         *sp++ = iargs [0];
10910
10911                                         inline_costs += costs;
10912                                 } else {
10913                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10914                                         *sp++ = ins;
10915                                 }
10916                         } else
10917 #endif
10918                         if (is_instance) {
10919                                 if (sp [0]->type == STACK_VTYPE) {
10920                                         MonoInst *var;
10921
10922                                         /* Have to compute the address of the variable */
10923
10924                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10925                                         if (!var)
10926                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10927                                         else
10928                                                 g_assert (var->klass == klass);
10929
10930                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10931                                         sp [0] = ins;
10932                                 }
10933
10934                                 if (op == CEE_LDFLDA) {
10935                                         if (sp [0]->type == STACK_OBJ) {
10936                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10937                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10938                                         }
10939
10940                                         dreg = alloc_ireg_mp (cfg);
10941
10942                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10943                                                 MonoInst *offset_ins;
10944
10945                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10946                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10947                                         } else {
10948                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10949                                         }
10950                                         ins->klass = mono_class_from_mono_type (field->type);
10951                                         ins->type = STACK_MP;
10952                                         *sp++ = ins;
10953                                 } else {
10954                                         MonoInst *load;
10955
10956                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10957
10958                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10959                                                 MonoInst *offset_ins;
10960
10961                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10962                                                 dreg = alloc_ireg_mp (cfg);
10963                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10964                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
10965                                         } else {
10966                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
10967                                         }
10968                                         load->flags |= ins_flag;
10969                                         if (sp [0]->opcode != OP_LDADDR)
10970                                                 load->flags |= MONO_INST_FAULT;
10971                                         *sp++ = load;
10972                                 }
10973                         }
10974
10975                         if (is_instance) {
10976                                 ins_flag = 0;
10977                                 ip += 5;
10978                                 break;
10979                         }
10980
10981                         /* STATIC CASE */
10982                         context_used = mini_class_check_context_used (cfg, klass);
10983
10984                         ftype = mono_field_get_type (field);
10985
10986                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
10987                                 UNVERIFIED;
10988
10989                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10990                          * to be called here.
10991                          */
10992                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10993                                 mono_class_vtable (cfg->domain, klass);
10994                                 CHECK_TYPELOAD (klass);
10995                         }
10996                         mono_domain_lock (cfg->domain);
10997                         if (cfg->domain->special_static_fields)
10998                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10999                         mono_domain_unlock (cfg->domain);
11000
11001                         is_special_static = mono_class_field_is_special_static (field);
11002
11003                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11004                                 thread_ins = mono_get_thread_intrinsic (cfg);
11005                         else
11006                                 thread_ins = NULL;
11007
11008                         /* Generate IR to compute the field address */
11009                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11010                                 /*
11011                                  * Fast access to TLS data
11012                                  * Inline version of get_thread_static_data () in
11013                                  * threads.c.
11014                                  */
11015                                 guint32 offset;
11016                                 int idx, static_data_reg, array_reg, dreg;
11017
11018                                 GSHAREDVT_FAILURE (op);
11019
11020                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11021                                 static_data_reg = alloc_ireg (cfg);
11022                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11023
11024                                 if (cfg->compile_aot) {
11025                                         int offset_reg, offset2_reg, idx_reg;
11026
11027                                         /* For TLS variables, this will return the TLS offset */
11028                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11029                                         offset_reg = ins->dreg;
11030                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11031                                         idx_reg = alloc_ireg (cfg);
11032                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11033                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11034                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11035                                         array_reg = alloc_ireg (cfg);
11036                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11037                                         offset2_reg = alloc_ireg (cfg);
11038                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11039                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11040                                         dreg = alloc_ireg (cfg);
11041                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11042                                 } else {
11043                                         offset = (gsize)addr & 0x7fffffff;
11044                                         idx = offset & 0x3f;
11045
11046                                         array_reg = alloc_ireg (cfg);
11047                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11048                                         dreg = alloc_ireg (cfg);
11049                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11050                                 }
11051                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11052                                         (cfg->compile_aot && is_special_static) ||
11053                                         (context_used && is_special_static)) {
11054                                 MonoInst *iargs [2];
11055
11056                                 g_assert (field->parent);
11057                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11058                                 if (context_used) {
11059                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11060                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11061                                 } else {
11062                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11063                                 }
11064                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11065                         } else if (context_used) {
11066                                 MonoInst *static_data;
11067
11068                                 /*
11069                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11070                                         method->klass->name_space, method->klass->name, method->name,
11071                                         depth, field->offset);
11072                                 */
11073
11074                                 if (mono_class_needs_cctor_run (klass, method))
11075                                         emit_generic_class_init (cfg, klass, &bblock);
11076
11077                                 /*
11078                                  * The pointer we're computing here is
11079                                  *
11080                                  *   super_info.static_data + field->offset
11081                                  */
11082                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11083                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11084
11085                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
11086                                         MonoInst *offset_ins;
11087
11088                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11089                                         dreg = alloc_ireg_mp (cfg);
11090                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11091                                 } else if (field->offset == 0) {
11092                                         ins = static_data;
11093                                 } else {
11094                                         int addr_reg = mono_alloc_preg (cfg);
11095                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11096                                 }
11097                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11098                                 MonoInst *iargs [2];
11099
11100                                 g_assert (field->parent);
11101                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11102                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11103                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11104                         } else {
11105                                 MonoVTable *vtable = NULL;
11106
11107                                 if (!cfg->compile_aot)
11108                                         vtable = mono_class_vtable (cfg->domain, klass);
11109                                 CHECK_TYPELOAD (klass);
11110
11111                                 if (!addr) {
11112                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11113                                                 if (!(g_slist_find (class_inits, klass))) {
11114                                                         emit_class_init (cfg, klass, &bblock);
11115                                                         if (cfg->verbose_level > 2)
11116                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11117                                                         class_inits = g_slist_prepend (class_inits, klass);
11118                                                 }
11119                                         } else {
11120                                                 if (cfg->run_cctors) {
11121                                                         MonoException *ex;
11122                                                         /* This makes so that inline cannot trigger */
11123                                                         /* .cctors: too many apps depend on them */
11124                                                         /* running with a specific order... */
11125                                                         g_assert (vtable);
11126                                                         if (! vtable->initialized)
11127                                                                 INLINE_FAILURE ("class init");
11128                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
11129                                                         if (ex) {
11130                                                                 set_exception_object (cfg, ex);
11131                                                                 goto exception_exit;
11132                                                         }
11133                                                 }
11134                                         }
11135                                         if (cfg->compile_aot)
11136                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11137                                         else {
11138                                                 g_assert (vtable);
11139                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11140                                                 g_assert (addr);
11141                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11142                                         }
11143                                 } else {
11144                                         MonoInst *iargs [1];
11145                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11146                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11147                                 }
11148                         }
11149
11150                         /* Generate IR to do the actual load/store operation */
11151
11152                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11153                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11154                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11155                         }
11156
11157                         if (op == CEE_LDSFLDA) {
11158                                 ins->klass = mono_class_from_mono_type (ftype);
11159                                 ins->type = STACK_PTR;
11160                                 *sp++ = ins;
11161                         } else if (op == CEE_STSFLD) {
11162                                 MonoInst *store;
11163
11164                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11165                                 store->flags |= ins_flag;
11166                         } else {
11167                                 gboolean is_const = FALSE;
11168                                 MonoVTable *vtable = NULL;
11169                                 gpointer addr = NULL;
11170
11171                                 if (!context_used) {
11172                                         vtable = mono_class_vtable (cfg->domain, klass);
11173                                         CHECK_TYPELOAD (klass);
11174                                 }
11175                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11176                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11177                                         int ro_type = ftype->type;
11178                                         if (!addr)
11179                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11180                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11181                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11182                                         }
11183
11184                                         GSHAREDVT_FAILURE (op);
11185
11186                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11187                                         is_const = TRUE;
11188                                         switch (ro_type) {
11189                                         case MONO_TYPE_BOOLEAN:
11190                                         case MONO_TYPE_U1:
11191                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11192                                                 sp++;
11193                                                 break;
11194                                         case MONO_TYPE_I1:
11195                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11196                                                 sp++;
11197                                                 break;
11198                                         case MONO_TYPE_CHAR:
11199                                         case MONO_TYPE_U2:
11200                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11201                                                 sp++;
11202                                                 break;
11203                                         case MONO_TYPE_I2:
11204                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11205                                                 sp++;
11206                                                 break;
11207                                                 break;
11208                                         case MONO_TYPE_I4:
11209                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11210                                                 sp++;
11211                                                 break;
11212                                         case MONO_TYPE_U4:
11213                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11214                                                 sp++;
11215                                                 break;
11216                                         case MONO_TYPE_I:
11217                                         case MONO_TYPE_U:
11218                                         case MONO_TYPE_PTR:
11219                                         case MONO_TYPE_FNPTR:
11220                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11221                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11222                                                 sp++;
11223                                                 break;
11224                                         case MONO_TYPE_STRING:
11225                                         case MONO_TYPE_OBJECT:
11226                                         case MONO_TYPE_CLASS:
11227                                         case MONO_TYPE_SZARRAY:
11228                                         case MONO_TYPE_ARRAY:
11229                                                 if (!mono_gc_is_moving ()) {
11230                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11231                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11232                                                         sp++;
11233                                                 } else {
11234                                                         is_const = FALSE;
11235                                                 }
11236                                                 break;
11237                                         case MONO_TYPE_I8:
11238                                         case MONO_TYPE_U8:
11239                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11240                                                 sp++;
11241                                                 break;
11242                                         case MONO_TYPE_R4:
11243                                         case MONO_TYPE_R8:
11244                                         case MONO_TYPE_VALUETYPE:
11245                                         default:
11246                                                 is_const = FALSE;
11247                                                 break;
11248                                         }
11249                                 }
11250
11251                                 if (!is_const) {
11252                                         MonoInst *load;
11253
11254                                         CHECK_STACK_OVF (1);
11255
11256                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11257                                         load->flags |= ins_flag;
11258                                         ins_flag = 0;
11259                                         *sp++ = load;
11260                                 }
11261                         }
11262
11263                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11264                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11265                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11266                         }
11267
11268                         ins_flag = 0;
11269                         ip += 5;
11270                         break;
11271                 }
11272                 case CEE_STOBJ:
11273                         CHECK_STACK (2);
11274                         sp -= 2;
11275                         CHECK_OPSIZE (5);
11276                         token = read32 (ip + 1);
11277                         klass = mini_get_class (method, token, generic_context);
11278                         CHECK_TYPELOAD (klass);
11279                         if (ins_flag & MONO_INST_VOLATILE) {
11280                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11281                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11282                         }
11283                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11284                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11285                         ins->flags |= ins_flag;
11286                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11287                                         generic_class_is_reference_type (cfg, klass)) {
11288                                 /* insert call to write barrier */
11289                                 emit_write_barrier (cfg, sp [0], sp [1]);
11290                         }
11291                         ins_flag = 0;
11292                         ip += 5;
11293                         inline_costs += 1;
11294                         break;
11295
11296                         /*
11297                          * Array opcodes
11298                          */
11299                 case CEE_NEWARR: {
11300                         MonoInst *len_ins;
11301                         const char *data_ptr;
11302                         int data_size = 0;
11303                         guint32 field_token;
11304
11305                         CHECK_STACK (1);
11306                         --sp;
11307
11308                         CHECK_OPSIZE (5);
11309                         token = read32 (ip + 1);
11310
11311                         klass = mini_get_class (method, token, generic_context);
11312                         CHECK_TYPELOAD (klass);
11313
11314                         context_used = mini_class_check_context_used (cfg, klass);
11315
11316                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11317                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11318                                 ins->sreg1 = sp [0]->dreg;
11319                                 ins->type = STACK_I4;
11320                                 ins->dreg = alloc_ireg (cfg);
11321                                 MONO_ADD_INS (cfg->cbb, ins);
11322                                 *sp = mono_decompose_opcode (cfg, ins, &bblock);
11323                         }
11324
11325                         if (context_used) {
11326                                 MonoInst *args [3];
11327                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11328                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11329
11330                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11331
11332                                 /* vtable */
11333                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11334                                         array_class, MONO_RGCTX_INFO_VTABLE);
11335                                 /* array len */
11336                                 args [1] = sp [0];
11337
11338                                 if (managed_alloc)
11339                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11340                                 else
11341                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
11342                         } else {
11343                                 if (cfg->opt & MONO_OPT_SHARED) {
11344                                         /* Decompose now to avoid problems with references to the domainvar */
11345                                         MonoInst *iargs [3];
11346
11347                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11348                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11349                                         iargs [2] = sp [0];
11350
11351                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11352                                 } else {
11353                                         /* Decompose later since it is needed by abcrem */
11354                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11355                                         mono_class_vtable (cfg->domain, array_type);
11356                                         CHECK_TYPELOAD (array_type);
11357
11358                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11359                                         ins->dreg = alloc_ireg_ref (cfg);
11360                                         ins->sreg1 = sp [0]->dreg;
11361                                         ins->inst_newa_class = klass;
11362                                         ins->type = STACK_OBJ;
11363                                         ins->klass = array_type;
11364                                         MONO_ADD_INS (cfg->cbb, ins);
11365                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11366                                         cfg->cbb->has_array_access = TRUE;
11367
11368                                         /* Needed so mono_emit_load_get_addr () gets called */
11369                                         mono_get_got_var (cfg);
11370                                 }
11371                         }
11372
11373                         len_ins = sp [0];
11374                         ip += 5;
11375                         *sp++ = ins;
11376                         inline_costs += 1;
11377
11378                         /*
11379                          * we inline/optimize the initialization sequence if possible.
11380                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11381                          * for small sizes open code the memcpy
11382                          * ensure the rva field is big enough
11383                          */
11384                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, bblock, 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))) {
11385                                 MonoMethod *memcpy_method = get_memcpy_method ();
11386                                 MonoInst *iargs [3];
11387                                 int add_reg = alloc_ireg_mp (cfg);
11388
11389                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11390                                 if (cfg->compile_aot) {
11391                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11392                                 } else {
11393                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11394                                 }
11395                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11396                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11397                                 ip += 11;
11398                         }
11399
11400                         break;
11401                 }
11402                 case CEE_LDLEN:
11403                         CHECK_STACK (1);
11404                         --sp;
11405                         if (sp [0]->type != STACK_OBJ)
11406                                 UNVERIFIED;
11407
11408                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11409                         ins->dreg = alloc_preg (cfg);
11410                         ins->sreg1 = sp [0]->dreg;
11411                         ins->type = STACK_I4;
11412                         /* This flag will be inherited by the decomposition */
11413                         ins->flags |= MONO_INST_FAULT;
11414                         MONO_ADD_INS (cfg->cbb, ins);
11415                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11416                         cfg->cbb->has_array_access = TRUE;
11417                         ip ++;
11418                         *sp++ = ins;
11419                         break;
11420                 case CEE_LDELEMA:
11421                         CHECK_STACK (2);
11422                         sp -= 2;
11423                         CHECK_OPSIZE (5);
11424                         if (sp [0]->type != STACK_OBJ)
11425                                 UNVERIFIED;
11426
11427                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11428
11429                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11430                         CHECK_TYPELOAD (klass);
11431                         /* we need to make sure that this array is exactly the type it needs
11432                          * to be for correctness. the wrappers are lax with their usage
11433                          * so we need to ignore them here
11434                          */
11435                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11436                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11437                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11438                                 CHECK_TYPELOAD (array_class);
11439                         }
11440
11441                         readonly = FALSE;
11442                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11443                         *sp++ = ins;
11444                         ip += 5;
11445                         break;
11446                 case CEE_LDELEM:
11447                 case CEE_LDELEM_I1:
11448                 case CEE_LDELEM_U1:
11449                 case CEE_LDELEM_I2:
11450                 case CEE_LDELEM_U2:
11451                 case CEE_LDELEM_I4:
11452                 case CEE_LDELEM_U4:
11453                 case CEE_LDELEM_I8:
11454                 case CEE_LDELEM_I:
11455                 case CEE_LDELEM_R4:
11456                 case CEE_LDELEM_R8:
11457                 case CEE_LDELEM_REF: {
11458                         MonoInst *addr;
11459
11460                         CHECK_STACK (2);
11461                         sp -= 2;
11462
11463                         if (*ip == CEE_LDELEM) {
11464                                 CHECK_OPSIZE (5);
11465                                 token = read32 (ip + 1);
11466                                 klass = mini_get_class (method, token, generic_context);
11467                                 CHECK_TYPELOAD (klass);
11468                                 mono_class_init (klass);
11469                         }
11470                         else
11471                                 klass = array_access_to_klass (*ip);
11472
11473                         if (sp [0]->type != STACK_OBJ)
11474                                 UNVERIFIED;
11475
11476                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11477
11478                         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
11479                                 // FIXME-VT: OP_ICONST optimization
11480                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11481                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11482                                 ins->opcode = OP_LOADV_MEMBASE;
11483                         } else if (sp [1]->opcode == OP_ICONST) {
11484                                 int array_reg = sp [0]->dreg;
11485                                 int index_reg = sp [1]->dreg;
11486                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11487
11488                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11489                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11490                         } else {
11491                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11492                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11493                         }
11494                         *sp++ = ins;
11495                         if (*ip == CEE_LDELEM)
11496                                 ip += 5;
11497                         else
11498                                 ++ip;
11499                         break;
11500                 }
11501                 case CEE_STELEM_I:
11502                 case CEE_STELEM_I1:
11503                 case CEE_STELEM_I2:
11504                 case CEE_STELEM_I4:
11505                 case CEE_STELEM_I8:
11506                 case CEE_STELEM_R4:
11507                 case CEE_STELEM_R8:
11508                 case CEE_STELEM_REF:
11509                 case CEE_STELEM: {
11510                         CHECK_STACK (3);
11511                         sp -= 3;
11512
11513                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11514
11515                         if (*ip == CEE_STELEM) {
11516                                 CHECK_OPSIZE (5);
11517                                 token = read32 (ip + 1);
11518                                 klass = mini_get_class (method, token, generic_context);
11519                                 CHECK_TYPELOAD (klass);
11520                                 mono_class_init (klass);
11521                         }
11522                         else
11523                                 klass = array_access_to_klass (*ip);
11524
11525                         if (sp [0]->type != STACK_OBJ)
11526                                 UNVERIFIED;
11527
11528                         emit_array_store (cfg, klass, sp, TRUE);
11529
11530                         if (*ip == CEE_STELEM)
11531                                 ip += 5;
11532                         else
11533                                 ++ip;
11534                         inline_costs += 1;
11535                         break;
11536                 }
11537                 case CEE_CKFINITE: {
11538                         CHECK_STACK (1);
11539                         --sp;
11540
11541                         MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11542                         ins->sreg1 = sp [0]->dreg;
11543                         ins->dreg = alloc_freg (cfg);
11544                         ins->type = STACK_R8;
11545                         MONO_ADD_INS (bblock, ins);
11546
11547                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
11548
11549                         ++ip;
11550                         break;
11551                 }
11552                 case CEE_REFANYVAL: {
11553                         MonoInst *src_var, *src;
11554
11555                         int klass_reg = alloc_preg (cfg);
11556                         int dreg = alloc_preg (cfg);
11557
11558                         GSHAREDVT_FAILURE (*ip);
11559
11560                         CHECK_STACK (1);
11561                         MONO_INST_NEW (cfg, ins, *ip);
11562                         --sp;
11563                         CHECK_OPSIZE (5);
11564                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11565                         CHECK_TYPELOAD (klass);
11566
11567                         context_used = mini_class_check_context_used (cfg, klass);
11568
11569                         // FIXME:
11570                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11571                         if (!src_var)
11572                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11573                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11574                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11575
11576                         if (context_used) {
11577                                 MonoInst *klass_ins;
11578
11579                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
11580                                                 klass, MONO_RGCTX_INFO_KLASS);
11581
11582                                 // FIXME:
11583                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11584                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11585                         } else {
11586                                 mini_emit_class_check (cfg, klass_reg, klass);
11587                         }
11588                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11589                         ins->type = STACK_MP;
11590                         *sp++ = ins;
11591                         ip += 5;
11592                         break;
11593                 }
11594                 case CEE_MKREFANY: {
11595                         MonoInst *loc, *addr;
11596
11597                         GSHAREDVT_FAILURE (*ip);
11598
11599                         CHECK_STACK (1);
11600                         MONO_INST_NEW (cfg, ins, *ip);
11601                         --sp;
11602                         CHECK_OPSIZE (5);
11603                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11604                         CHECK_TYPELOAD (klass);
11605
11606                         context_used = mini_class_check_context_used (cfg, klass);
11607
11608                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11609                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11610
11611                         if (context_used) {
11612                                 MonoInst *const_ins;
11613                                 int type_reg = alloc_preg (cfg);
11614
11615                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11616                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11617                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11618                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11619                         } else if (cfg->compile_aot) {
11620                                 int const_reg = alloc_preg (cfg);
11621                                 int type_reg = alloc_preg (cfg);
11622
11623                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11624                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11625                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11626                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11627                         } else {
11628                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
11629                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
11630                         }
11631                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11632
11633                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11634                         ins->type = STACK_VTYPE;
11635                         ins->klass = mono_defaults.typed_reference_class;
11636                         *sp++ = ins;
11637                         ip += 5;
11638                         break;
11639                 }
11640                 case CEE_LDTOKEN: {
11641                         gpointer handle;
11642                         MonoClass *handle_class;
11643
11644                         CHECK_STACK_OVF (1);
11645
11646                         CHECK_OPSIZE (5);
11647                         n = read32 (ip + 1);
11648
11649                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11650                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11651                                 handle = mono_method_get_wrapper_data (method, n);
11652                                 handle_class = mono_method_get_wrapper_data (method, n + 1);
11653                                 if (handle_class == mono_defaults.typehandle_class)
11654                                         handle = &((MonoClass*)handle)->byval_arg;
11655                         }
11656                         else {
11657                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11658                                 CHECK_CFG_ERROR;
11659                         }
11660                         if (!handle)
11661                                 LOAD_ERROR;
11662                         mono_class_init (handle_class);
11663                         if (cfg->generic_sharing_context) {
11664                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11665                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11666                                         /* This case handles ldtoken
11667                                            of an open type, like for
11668                                            typeof(Gen<>). */
11669                                         context_used = 0;
11670                                 } else if (handle_class == mono_defaults.typehandle_class) {
11671                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type (handle));
11672                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11673                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11674                                 else if (handle_class == mono_defaults.methodhandle_class)
11675                                         context_used = mini_method_check_context_used (cfg, handle);
11676                                 else
11677                                         g_assert_not_reached ();
11678                         }
11679
11680                         if ((cfg->opt & MONO_OPT_SHARED) &&
11681                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11682                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11683                                 MonoInst *addr, *vtvar, *iargs [3];
11684                                 int method_context_used;
11685
11686                                 method_context_used = mini_method_check_context_used (cfg, method);
11687
11688                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11689
11690                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11691                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11692                                 if (method_context_used) {
11693                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11694                                                 method, MONO_RGCTX_INFO_METHOD);
11695                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11696                                 } else {
11697                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11698                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11699                                 }
11700                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11701
11702                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11703
11704                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11705                         } else {
11706                                 if ((ip + 5 < end) && ip_in_bb (cfg, bblock, ip + 5) &&
11707                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11708                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11709                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11710                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11711                                         MonoClass *tclass = mono_class_from_mono_type (handle);
11712
11713                                         mono_class_init (tclass);
11714                                         if (context_used) {
11715                                                 ins = emit_get_rgctx_klass (cfg, context_used,
11716                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11717                                         } else if (cfg->compile_aot) {
11718                                                 if (method->wrapper_type) {
11719                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
11720                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11721                                                                 /* Special case for static synchronized wrappers */
11722                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11723                                                         } else {
11724                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11725                                                                 /* FIXME: n is not a normal token */
11726                                                                 DISABLE_AOT (cfg);
11727                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11728                                                         }
11729                                                 } else {
11730                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11731                                                 }
11732                                         } else {
11733                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, handle));
11734                                         }
11735                                         ins->type = STACK_OBJ;
11736                                         ins->klass = cmethod->klass;
11737                                         ip += 5;
11738                                 } else {
11739                                         MonoInst *addr, *vtvar;
11740
11741                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11742
11743                                         if (context_used) {
11744                                                 if (handle_class == mono_defaults.typehandle_class) {
11745                                                         ins = emit_get_rgctx_klass (cfg, context_used,
11746                                                                         mono_class_from_mono_type (handle),
11747                                                                         MONO_RGCTX_INFO_TYPE);
11748                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11749                                                         ins = emit_get_rgctx_method (cfg, context_used,
11750                                                                         handle, MONO_RGCTX_INFO_METHOD);
11751                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11752                                                         ins = emit_get_rgctx_field (cfg, context_used,
11753                                                                         handle, MONO_RGCTX_INFO_CLASS_FIELD);
11754                                                 } else {
11755                                                         g_assert_not_reached ();
11756                                                 }
11757                                         } else if (cfg->compile_aot) {
11758                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11759                                         } else {
11760                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11761                                         }
11762                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11763                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11764                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11765                                 }
11766                         }
11767
11768                         *sp++ = ins;
11769                         ip += 5;
11770                         break;
11771                 }
11772                 case CEE_THROW:
11773                         CHECK_STACK (1);
11774                         MONO_INST_NEW (cfg, ins, OP_THROW);
11775                         --sp;
11776                         ins->sreg1 = sp [0]->dreg;
11777                         ip++;
11778                         bblock->out_of_line = TRUE;
11779                         MONO_ADD_INS (bblock, ins);
11780                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11781                         MONO_ADD_INS (bblock, ins);
11782                         sp = stack_start;
11783
11784                         link_bblock (cfg, bblock, end_bblock);
11785                         start_new_bblock = 1;
11786                         break;
11787                 case CEE_ENDFINALLY:
11788                         /* mono_save_seq_point_info () depends on this */
11789                         if (sp != stack_start)
11790                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11791                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11792                         MONO_ADD_INS (bblock, ins);
11793                         ip++;
11794                         start_new_bblock = 1;
11795
11796                         /*
11797                          * Control will leave the method so empty the stack, otherwise
11798                          * the next basic block will start with a nonempty stack.
11799                          */
11800                         while (sp != stack_start) {
11801                                 sp--;
11802                         }
11803                         break;
11804                 case CEE_LEAVE:
11805                 case CEE_LEAVE_S: {
11806                         GList *handlers;
11807
11808                         if (*ip == CEE_LEAVE) {
11809                                 CHECK_OPSIZE (5);
11810                                 target = ip + 5 + (gint32)read32(ip + 1);
11811                         } else {
11812                                 CHECK_OPSIZE (2);
11813                                 target = ip + 2 + (signed char)(ip [1]);
11814                         }
11815
11816                         /* empty the stack */
11817                         while (sp != stack_start) {
11818                                 sp--;
11819                         }
11820
11821                         /*
11822                          * If this leave statement is in a catch block, check for a
11823                          * pending exception, and rethrow it if necessary.
11824                          * We avoid doing this in runtime invoke wrappers, since those are called
11825                          * by native code which excepts the wrapper to catch all exceptions.
11826                          */
11827                         for (i = 0; i < header->num_clauses; ++i) {
11828                                 MonoExceptionClause *clause = &header->clauses [i];
11829
11830                                 /*
11831                                  * Use <= in the final comparison to handle clauses with multiple
11832                                  * leave statements, like in bug #78024.
11833                                  * The ordering of the exception clauses guarantees that we find the
11834                                  * innermost clause.
11835                                  */
11836                                 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) {
11837                                         MonoInst *exc_ins;
11838                                         MonoBasicBlock *dont_throw;
11839
11840                                         /*
11841                                           MonoInst *load;
11842
11843                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11844                                         */
11845
11846                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11847
11848                                         NEW_BBLOCK (cfg, dont_throw);
11849
11850                                         /*
11851                                          * Currently, we always rethrow the abort exception, despite the
11852                                          * fact that this is not correct. See thread6.cs for an example.
11853                                          * But propagating the abort exception is more important than
11854                                          * getting the sematics right.
11855                                          */
11856                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11857                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11858                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11859
11860                                         MONO_START_BB (cfg, dont_throw);
11861                                         bblock = cfg->cbb;
11862                                 }
11863                         }
11864
11865                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11866                                 GList *tmp;
11867                                 MonoExceptionClause *clause;
11868
11869                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11870                                         clause = tmp->data;
11871                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11872                                         g_assert (tblock);
11873                                         link_bblock (cfg, bblock, tblock);
11874                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11875                                         ins->inst_target_bb = tblock;
11876                                         ins->inst_eh_block = clause;
11877                                         MONO_ADD_INS (bblock, ins);
11878                                         bblock->has_call_handler = 1;
11879                                         if (COMPILE_LLVM (cfg)) {
11880                                                 MonoBasicBlock *target_bb;
11881
11882                                                 /*
11883                                                  * Link the finally bblock with the target, since it will
11884                                                  * conceptually branch there.
11885                                                  * FIXME: Have to link the bblock containing the endfinally.
11886                                                  */
11887                                                 GET_BBLOCK (cfg, target_bb, target);
11888                                                 link_bblock (cfg, tblock, target_bb);
11889                                         }
11890                                 }
11891                                 g_list_free (handlers);
11892                         }
11893
11894                         MONO_INST_NEW (cfg, ins, OP_BR);
11895                         MONO_ADD_INS (bblock, ins);
11896                         GET_BBLOCK (cfg, tblock, target);
11897                         link_bblock (cfg, bblock, tblock);
11898                         ins->inst_target_bb = tblock;
11899                         start_new_bblock = 1;
11900
11901                         if (*ip == CEE_LEAVE)
11902                                 ip += 5;
11903                         else
11904                                 ip += 2;
11905
11906                         break;
11907                 }
11908
11909                         /*
11910                          * Mono specific opcodes
11911                          */
11912                 case MONO_CUSTOM_PREFIX: {
11913
11914                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11915
11916                         CHECK_OPSIZE (2);
11917                         switch (ip [1]) {
11918                         case CEE_MONO_ICALL: {
11919                                 gpointer func;
11920                                 MonoJitICallInfo *info;
11921
11922                                 token = read32 (ip + 2);
11923                                 func = mono_method_get_wrapper_data (method, token);
11924                                 info = mono_find_jit_icall_by_addr (func);
11925                                 if (!info)
11926                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11927                                 g_assert (info);
11928
11929                                 CHECK_STACK (info->sig->param_count);
11930                                 sp -= info->sig->param_count;
11931
11932                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11933                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11934                                         *sp++ = ins;
11935
11936                                 ip += 6;
11937                                 inline_costs += 10 * num_calls++;
11938
11939                                 break;
11940                         }
11941                         case CEE_MONO_LDPTR_CARD_TABLE: {
11942                                 int shift_bits;
11943                                 gpointer card_mask;
11944                                 CHECK_STACK_OVF (1);
11945
11946                                 if (cfg->compile_aot)
11947                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11948                                 else
11949                                         EMIT_NEW_PCONST (cfg, ins, mono_gc_get_card_table (&shift_bits, &card_mask));
11950
11951                                 *sp++ = ins;
11952                                 ip += 2;
11953                                 inline_costs += 10 * num_calls++;
11954                                 break;
11955                         }
11956                         case CEE_MONO_LDPTR_NURSERY_START: {
11957                                 int shift_bits;
11958                                 size_t size;
11959                                 CHECK_STACK_OVF (1);
11960
11961                                 if (cfg->compile_aot)
11962                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11963                                 else
11964                                         EMIT_NEW_PCONST (cfg, ins, mono_gc_get_nursery (&shift_bits, &size));
11965
11966                                 *sp++ = ins;
11967                                 ip += 2;
11968                                 inline_costs += 10 * num_calls++;
11969                                 break;
11970                         }
11971                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11972                                 CHECK_STACK_OVF (1);
11973
11974                                 if (cfg->compile_aot)
11975                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11976                                 else
11977                                         EMIT_NEW_PCONST (cfg, ins, mono_thread_interruption_request_flag ());
11978
11979                                 *sp++ = ins;
11980                                 ip += 2;
11981                                 inline_costs += 10 * num_calls++;
11982                                 break;
11983                         }
11984                         case CEE_MONO_LDPTR: {
11985                                 gpointer ptr;
11986
11987                                 CHECK_STACK_OVF (1);
11988                                 CHECK_OPSIZE (6);
11989                                 token = read32 (ip + 2);
11990
11991                                 ptr = mono_method_get_wrapper_data (method, token);
11992                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11993                                 *sp++ = ins;
11994                                 ip += 6;
11995                                 inline_costs += 10 * num_calls++;
11996                                 /* Can't embed random pointers into AOT code */
11997                                 DISABLE_AOT (cfg);
11998                                 break;
11999                         }
12000                         case CEE_MONO_JIT_ICALL_ADDR: {
12001                                 MonoJitICallInfo *callinfo;
12002                                 gpointer ptr;
12003
12004                                 CHECK_STACK_OVF (1);
12005                                 CHECK_OPSIZE (6);
12006                                 token = read32 (ip + 2);
12007
12008                                 ptr = mono_method_get_wrapper_data (method, token);
12009                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12010                                 g_assert (callinfo);
12011                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12012                                 *sp++ = ins;
12013                                 ip += 6;
12014                                 inline_costs += 10 * num_calls++;
12015                                 break;
12016                         }
12017                         case CEE_MONO_ICALL_ADDR: {
12018                                 MonoMethod *cmethod;
12019                                 gpointer ptr;
12020
12021                                 CHECK_STACK_OVF (1);
12022                                 CHECK_OPSIZE (6);
12023                                 token = read32 (ip + 2);
12024
12025                                 cmethod = mono_method_get_wrapper_data (method, token);
12026
12027                                 if (cfg->compile_aot) {
12028                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12029                                 } else {
12030                                         ptr = mono_lookup_internal_call (cmethod);
12031                                         g_assert (ptr);
12032                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12033                                 }
12034                                 *sp++ = ins;
12035                                 ip += 6;
12036                                 break;
12037                         }
12038                         case CEE_MONO_VTADDR: {
12039                                 MonoInst *src_var, *src;
12040
12041                                 CHECK_STACK (1);
12042                                 --sp;
12043
12044                                 // FIXME:
12045                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12046                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12047                                 *sp++ = src;
12048                                 ip += 2;
12049                                 break;
12050                         }
12051                         case CEE_MONO_NEWOBJ: {
12052                                 MonoInst *iargs [2];
12053
12054                                 CHECK_STACK_OVF (1);
12055                                 CHECK_OPSIZE (6);
12056                                 token = read32 (ip + 2);
12057                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12058                                 mono_class_init (klass);
12059                                 NEW_DOMAINCONST (cfg, iargs [0]);
12060                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12061                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12062                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12063                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
12064                                 ip += 6;
12065                                 inline_costs += 10 * num_calls++;
12066                                 break;
12067                         }
12068                         case CEE_MONO_OBJADDR:
12069                                 CHECK_STACK (1);
12070                                 --sp;
12071                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12072                                 ins->dreg = alloc_ireg_mp (cfg);
12073                                 ins->sreg1 = sp [0]->dreg;
12074                                 ins->type = STACK_MP;
12075                                 MONO_ADD_INS (cfg->cbb, ins);
12076                                 *sp++ = ins;
12077                                 ip += 2;
12078                                 break;
12079                         case CEE_MONO_LDNATIVEOBJ:
12080                                 /*
12081                                  * Similar to LDOBJ, but instead load the unmanaged
12082                                  * representation of the vtype to the stack.
12083                                  */
12084                                 CHECK_STACK (1);
12085                                 CHECK_OPSIZE (6);
12086                                 --sp;
12087                                 token = read32 (ip + 2);
12088                                 klass = mono_method_get_wrapper_data (method, token);
12089                                 g_assert (klass->valuetype);
12090                                 mono_class_init (klass);
12091
12092                                 {
12093                                         MonoInst *src, *dest, *temp;
12094
12095                                         src = sp [0];
12096                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12097                                         temp->backend.is_pinvoke = 1;
12098                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12099                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12100
12101                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12102                                         dest->type = STACK_VTYPE;
12103                                         dest->klass = klass;
12104
12105                                         *sp ++ = dest;
12106                                         ip += 6;
12107                                 }
12108                                 break;
12109                         case CEE_MONO_RETOBJ: {
12110                                 /*
12111                                  * Same as RET, but return the native representation of a vtype
12112                                  * to the caller.
12113                                  */
12114                                 g_assert (cfg->ret);
12115                                 g_assert (mono_method_signature (method)->pinvoke);
12116                                 CHECK_STACK (1);
12117                                 --sp;
12118
12119                                 CHECK_OPSIZE (6);
12120                                 token = read32 (ip + 2);
12121                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12122
12123                                 if (!cfg->vret_addr) {
12124                                         g_assert (cfg->ret_var_is_local);
12125
12126                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12127                                 } else {
12128                                         EMIT_NEW_RETLOADA (cfg, ins);
12129                                 }
12130                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12131
12132                                 if (sp != stack_start)
12133                                         UNVERIFIED;
12134
12135                                 MONO_INST_NEW (cfg, ins, OP_BR);
12136                                 ins->inst_target_bb = end_bblock;
12137                                 MONO_ADD_INS (bblock, ins);
12138                                 link_bblock (cfg, bblock, end_bblock);
12139                                 start_new_bblock = 1;
12140                                 ip += 6;
12141                                 break;
12142                         }
12143                         case CEE_MONO_CISINST:
12144                         case CEE_MONO_CCASTCLASS: {
12145                                 int token;
12146                                 CHECK_STACK (1);
12147                                 --sp;
12148                                 CHECK_OPSIZE (6);
12149                                 token = read32 (ip + 2);
12150                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12151                                 if (ip [1] == CEE_MONO_CISINST)
12152                                         ins = handle_cisinst (cfg, klass, sp [0]);
12153                                 else
12154                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12155                                 bblock = cfg->cbb;
12156                                 *sp++ = ins;
12157                                 ip += 6;
12158                                 break;
12159                         }
12160                         case CEE_MONO_SAVE_LMF:
12161                         case CEE_MONO_RESTORE_LMF:
12162 #ifdef MONO_ARCH_HAVE_LMF_OPS
12163                                 MONO_INST_NEW (cfg, ins, (ip [1] == CEE_MONO_SAVE_LMF) ? OP_SAVE_LMF : OP_RESTORE_LMF);
12164                                 MONO_ADD_INS (bblock, ins);
12165                                 cfg->need_lmf_area = TRUE;
12166 #endif
12167                                 ip += 2;
12168                                 break;
12169                         case CEE_MONO_CLASSCONST:
12170                                 CHECK_STACK_OVF (1);
12171                                 CHECK_OPSIZE (6);
12172                                 token = read32 (ip + 2);
12173                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12174                                 *sp++ = ins;
12175                                 ip += 6;
12176                                 inline_costs += 10 * num_calls++;
12177                                 break;
12178                         case CEE_MONO_NOT_TAKEN:
12179                                 bblock->out_of_line = TRUE;
12180                                 ip += 2;
12181                                 break;
12182                         case CEE_MONO_TLS: {
12183                                 int key;
12184
12185                                 CHECK_STACK_OVF (1);
12186                                 CHECK_OPSIZE (6);
12187                                 key = (gint32)read32 (ip + 2);
12188                                 g_assert (key < TLS_KEY_NUM);
12189
12190                                 ins = mono_create_tls_get (cfg, key);
12191                                 if (!ins) {
12192                                         if (cfg->compile_aot) {
12193                                                 DISABLE_AOT (cfg);
12194                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12195                                                 ins->dreg = alloc_preg (cfg);
12196                                                 ins->type = STACK_PTR;
12197                                         } else {
12198                                                 g_assert_not_reached ();
12199                                         }
12200                                 }
12201                                 ins->type = STACK_PTR;
12202                                 MONO_ADD_INS (bblock, ins);
12203                                 *sp++ = ins;
12204                                 ip += 6;
12205                                 break;
12206                         }
12207                         case CEE_MONO_DYN_CALL: {
12208                                 MonoCallInst *call;
12209
12210                                 /* It would be easier to call a trampoline, but that would put an
12211                                  * extra frame on the stack, confusing exception handling. So
12212                                  * implement it inline using an opcode for now.
12213                                  */
12214
12215                                 if (!cfg->dyn_call_var) {
12216                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12217                                         /* prevent it from being register allocated */
12218                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12219                                 }
12220
12221                                 /* Has to use a call inst since it local regalloc expects it */
12222                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12223                                 ins = (MonoInst*)call;
12224                                 sp -= 2;
12225                                 ins->sreg1 = sp [0]->dreg;
12226                                 ins->sreg2 = sp [1]->dreg;
12227                                 MONO_ADD_INS (bblock, ins);
12228
12229                                 cfg->param_area = MAX (cfg->param_area, MONO_ARCH_DYN_CALL_PARAM_AREA);
12230
12231                                 ip += 2;
12232                                 inline_costs += 10 * num_calls++;
12233
12234                                 break;
12235                         }
12236                         case CEE_MONO_MEMORY_BARRIER: {
12237                                 CHECK_OPSIZE (6);
12238                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12239                                 ip += 6;
12240                                 break;
12241                         }
12242                         case CEE_MONO_JIT_ATTACH: {
12243                                 MonoInst *args [16], *domain_ins;
12244                                 MonoInst *ad_ins, *jit_tls_ins;
12245                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12246
12247                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12248
12249                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12250                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12251
12252                                 ad_ins = mono_get_domain_intrinsic (cfg);
12253                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12254
12255                                 if (MONO_ARCH_HAVE_TLS_GET && ad_ins && jit_tls_ins) {
12256                                         NEW_BBLOCK (cfg, next_bb);
12257                                         NEW_BBLOCK (cfg, call_bb);
12258
12259                                         if (cfg->compile_aot) {
12260                                                 /* AOT code is only used in the root domain */
12261                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12262                                         } else {
12263                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12264                                         }
12265                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12266                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12267                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12268
12269                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12270                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12271                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12272
12273                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12274                                         MONO_START_BB (cfg, call_bb);
12275                                 }
12276
12277                                 if (cfg->compile_aot) {
12278                                         /* AOT code is only used in the root domain */
12279                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
12280                                 } else {
12281                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
12282                                 }
12283                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12284                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12285
12286                                 if (next_bb) {
12287                                         MONO_START_BB (cfg, next_bb);
12288                                         bblock = cfg->cbb;
12289                                 }
12290                                 ip += 2;
12291                                 break;
12292                         }
12293                         case CEE_MONO_JIT_DETACH: {
12294                                 MonoInst *args [16];
12295
12296                                 /* Restore the original domain */
12297                                 dreg = alloc_ireg (cfg);
12298                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12299                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12300                                 ip += 2;
12301                                 break;
12302                         }
12303                         default:
12304                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12305                                 break;
12306                         }
12307                         break;
12308                 }
12309
12310                 case CEE_PREFIX1: {
12311                         CHECK_OPSIZE (2);
12312                         switch (ip [1]) {
12313                         case CEE_ARGLIST: {
12314                                 /* somewhat similar to LDTOKEN */
12315                                 MonoInst *addr, *vtvar;
12316                                 CHECK_STACK_OVF (1);
12317                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12318
12319                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12320                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12321
12322                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12323                                 ins->type = STACK_VTYPE;
12324                                 ins->klass = mono_defaults.argumenthandle_class;
12325                                 *sp++ = ins;
12326                                 ip += 2;
12327                                 break;
12328                         }
12329                         case CEE_CEQ:
12330                         case CEE_CGT:
12331                         case CEE_CGT_UN:
12332                         case CEE_CLT:
12333                         case CEE_CLT_UN: {
12334                                 MonoInst *cmp, *arg1, *arg2;
12335
12336                                 CHECK_STACK (2);
12337                                 sp -= 2;
12338                                 arg1 = sp [0];
12339                                 arg2 = sp [1];
12340
12341                                 /*
12342                                  * The following transforms:
12343                                  *    CEE_CEQ    into OP_CEQ
12344                                  *    CEE_CGT    into OP_CGT
12345                                  *    CEE_CGT_UN into OP_CGT_UN
12346                                  *    CEE_CLT    into OP_CLT
12347                                  *    CEE_CLT_UN into OP_CLT_UN
12348                                  */
12349                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12350
12351                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12352                                 cmp->sreg1 = arg1->dreg;
12353                                 cmp->sreg2 = arg2->dreg;
12354                                 type_from_op (cfg, cmp, arg1, arg2);
12355                                 CHECK_TYPE (cmp);
12356                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12357                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12358                                         cmp->opcode = OP_LCOMPARE;
12359                                 else if (arg1->type == STACK_R4)
12360                                         cmp->opcode = OP_RCOMPARE;
12361                                 else if (arg1->type == STACK_R8)
12362                                         cmp->opcode = OP_FCOMPARE;
12363                                 else
12364                                         cmp->opcode = OP_ICOMPARE;
12365                                 MONO_ADD_INS (bblock, cmp);
12366                                 ins->type = STACK_I4;
12367                                 ins->dreg = alloc_dreg (cfg, ins->type);
12368                                 type_from_op (cfg, ins, arg1, arg2);
12369
12370                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12371                                         /*
12372                                          * The backends expect the fceq opcodes to do the
12373                                          * comparison too.
12374                                          */
12375                                         ins->sreg1 = cmp->sreg1;
12376                                         ins->sreg2 = cmp->sreg2;
12377                                         NULLIFY_INS (cmp);
12378                                 }
12379                                 MONO_ADD_INS (bblock, ins);
12380                                 *sp++ = ins;
12381                                 ip += 2;
12382                                 break;
12383                         }
12384                         case CEE_LDFTN: {
12385                                 MonoInst *argconst;
12386                                 MonoMethod *cil_method;
12387
12388                                 CHECK_STACK_OVF (1);
12389                                 CHECK_OPSIZE (6);
12390                                 n = read32 (ip + 2);
12391                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12392                                 if (!cmethod || mono_loader_get_last_error ())
12393                                         LOAD_ERROR;
12394                                 mono_class_init (cmethod->klass);
12395
12396                                 mono_save_token_info (cfg, image, n, cmethod);
12397
12398                                 context_used = mini_method_check_context_used (cfg, cmethod);
12399
12400                                 cil_method = cmethod;
12401                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12402                                         METHOD_ACCESS_FAILURE (method, cil_method);
12403
12404                                 if (mono_security_core_clr_enabled ())
12405                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12406
12407                                 /*
12408                                  * Optimize the common case of ldftn+delegate creation
12409                                  */
12410                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12411                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12412                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12413                                                 MonoInst *target_ins, *handle_ins;
12414                                                 MonoMethod *invoke;
12415                                                 int invoke_context_used;
12416
12417                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12418                                                 if (!invoke || !mono_method_signature (invoke))
12419                                                         LOAD_ERROR;
12420
12421                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12422
12423                                                 target_ins = sp [-1];
12424
12425                                                 if (mono_security_core_clr_enabled ())
12426                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12427
12428                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12429                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12430                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12431                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12432                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12433                                                         }
12434                                                 }
12435
12436                                                 /* FIXME: SGEN support */
12437                                                 if (invoke_context_used == 0) {
12438                                                         ip += 6;
12439                                                         if (cfg->verbose_level > 3)
12440                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12441                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12442                                                                 sp --;
12443                                                                 *sp = handle_ins;
12444                                                                 CHECK_CFG_EXCEPTION;
12445                                                                 ip += 5;
12446                                                                 sp ++;
12447                                                                 break;
12448                                                         }
12449                                                         ip -= 6;
12450                                                 }
12451                                         }
12452                                 }
12453
12454                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12455                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12456                                 *sp++ = ins;
12457
12458                                 ip += 6;
12459                                 inline_costs += 10 * num_calls++;
12460                                 break;
12461                         }
12462                         case CEE_LDVIRTFTN: {
12463                                 MonoInst *args [2];
12464
12465                                 CHECK_STACK (1);
12466                                 CHECK_OPSIZE (6);
12467                                 n = read32 (ip + 2);
12468                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12469                                 if (!cmethod || mono_loader_get_last_error ())
12470                                         LOAD_ERROR;
12471                                 mono_class_init (cmethod->klass);
12472
12473                                 context_used = mini_method_check_context_used (cfg, cmethod);
12474
12475                                 if (mono_security_core_clr_enabled ())
12476                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12477
12478                                 /*
12479                                  * Optimize the common case of ldvirtftn+delegate creation
12480                                  */
12481                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
12482                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12483                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12484                                                 MonoInst *target_ins, *handle_ins;
12485                                                 MonoMethod *invoke;
12486                                                 int invoke_context_used;
12487                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12488
12489                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12490                                                 if (!invoke || !mono_method_signature (invoke))
12491                                                         LOAD_ERROR;
12492
12493                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12494
12495                                                 target_ins = sp [-1];
12496
12497                                                 if (mono_security_core_clr_enabled ())
12498                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12499
12500                                                 /* FIXME: SGEN support */
12501                                                 if (invoke_context_used == 0) {
12502                                                         ip += 6;
12503                                                         if (cfg->verbose_level > 3)
12504                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12505                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12506                                                                 sp -= 2;
12507                                                                 *sp = handle_ins;
12508                                                                 CHECK_CFG_EXCEPTION;
12509                                                                 ip += 5;
12510                                                                 sp ++;
12511                                                                 break;
12512                                                         }
12513                                                         ip -= 6;
12514                                                 }
12515                                         }
12516                                 }
12517
12518                                 --sp;
12519                                 args [0] = *sp;
12520
12521                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12522                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12523
12524                                 if (context_used)
12525                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12526                                 else
12527                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12528
12529                                 ip += 6;
12530                                 inline_costs += 10 * num_calls++;
12531                                 break;
12532                         }
12533                         case CEE_LDARG:
12534                                 CHECK_STACK_OVF (1);
12535                                 CHECK_OPSIZE (4);
12536                                 n = read16 (ip + 2);
12537                                 CHECK_ARG (n);
12538                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12539                                 *sp++ = ins;
12540                                 ip += 4;
12541                                 break;
12542                         case CEE_LDARGA:
12543                                 CHECK_STACK_OVF (1);
12544                                 CHECK_OPSIZE (4);
12545                                 n = read16 (ip + 2);
12546                                 CHECK_ARG (n);
12547                                 NEW_ARGLOADA (cfg, ins, n);
12548                                 MONO_ADD_INS (cfg->cbb, ins);
12549                                 *sp++ = ins;
12550                                 ip += 4;
12551                                 break;
12552                         case CEE_STARG:
12553                                 CHECK_STACK (1);
12554                                 --sp;
12555                                 CHECK_OPSIZE (4);
12556                                 n = read16 (ip + 2);
12557                                 CHECK_ARG (n);
12558                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12559                                         UNVERIFIED;
12560                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12561                                 ip += 4;
12562                                 break;
12563                         case CEE_LDLOC:
12564                                 CHECK_STACK_OVF (1);
12565                                 CHECK_OPSIZE (4);
12566                                 n = read16 (ip + 2);
12567                                 CHECK_LOCAL (n);
12568                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12569                                 *sp++ = ins;
12570                                 ip += 4;
12571                                 break;
12572                         case CEE_LDLOCA: {
12573                                 unsigned char *tmp_ip;
12574                                 CHECK_STACK_OVF (1);
12575                                 CHECK_OPSIZE (4);
12576                                 n = read16 (ip + 2);
12577                                 CHECK_LOCAL (n);
12578
12579                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12580                                         ip = tmp_ip;
12581                                         inline_costs += 1;
12582                                         break;
12583                                 }
12584
12585                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12586                                 *sp++ = ins;
12587                                 ip += 4;
12588                                 break;
12589                         }
12590                         case CEE_STLOC:
12591                                 CHECK_STACK (1);
12592                                 --sp;
12593                                 CHECK_OPSIZE (4);
12594                                 n = read16 (ip + 2);
12595                                 CHECK_LOCAL (n);
12596                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12597                                         UNVERIFIED;
12598                                 emit_stloc_ir (cfg, sp, header, n);
12599                                 ip += 4;
12600                                 inline_costs += 1;
12601                                 break;
12602                         case CEE_LOCALLOC:
12603                                 CHECK_STACK (1);
12604                                 --sp;
12605                                 if (sp != stack_start)
12606                                         UNVERIFIED;
12607                                 if (cfg->method != method)
12608                                         /*
12609                                          * Inlining this into a loop in a parent could lead to
12610                                          * stack overflows which is different behavior than the
12611                                          * non-inlined case, thus disable inlining in this case.
12612                                          */
12613                                         INLINE_FAILURE("localloc");
12614
12615                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12616                                 ins->dreg = alloc_preg (cfg);
12617                                 ins->sreg1 = sp [0]->dreg;
12618                                 ins->type = STACK_PTR;
12619                                 MONO_ADD_INS (cfg->cbb, ins);
12620
12621                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12622                                 if (init_locals)
12623                                         ins->flags |= MONO_INST_INIT;
12624
12625                                 *sp++ = ins;
12626                                 ip += 2;
12627                                 break;
12628                         case CEE_ENDFILTER: {
12629                                 MonoExceptionClause *clause, *nearest;
12630                                 int cc;
12631
12632                                 CHECK_STACK (1);
12633                                 --sp;
12634                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12635                                         UNVERIFIED;
12636                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12637                                 ins->sreg1 = (*sp)->dreg;
12638                                 MONO_ADD_INS (bblock, ins);
12639                                 start_new_bblock = 1;
12640                                 ip += 2;
12641
12642                                 nearest = NULL;
12643                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12644                                         clause = &header->clauses [cc];
12645                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12646                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12647                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12648                                                 nearest = clause;
12649                                 }
12650                                 g_assert (nearest);
12651                                 if ((ip - header->code) != nearest->handler_offset)
12652                                         UNVERIFIED;
12653
12654                                 break;
12655                         }
12656                         case CEE_UNALIGNED_:
12657                                 ins_flag |= MONO_INST_UNALIGNED;
12658                                 /* FIXME: record alignment? we can assume 1 for now */
12659                                 CHECK_OPSIZE (3);
12660                                 ip += 3;
12661                                 break;
12662                         case CEE_VOLATILE_:
12663                                 ins_flag |= MONO_INST_VOLATILE;
12664                                 ip += 2;
12665                                 break;
12666                         case CEE_TAIL_:
12667                                 ins_flag   |= MONO_INST_TAILCALL;
12668                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12669                                 /* Can't inline tail calls at this time */
12670                                 inline_costs += 100000;
12671                                 ip += 2;
12672                                 break;
12673                         case CEE_INITOBJ:
12674                                 CHECK_STACK (1);
12675                                 --sp;
12676                                 CHECK_OPSIZE (6);
12677                                 token = read32 (ip + 2);
12678                                 klass = mini_get_class (method, token, generic_context);
12679                                 CHECK_TYPELOAD (klass);
12680                                 if (generic_class_is_reference_type (cfg, klass))
12681                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12682                                 else
12683                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12684                                 ip += 6;
12685                                 inline_costs += 1;
12686                                 break;
12687                         case CEE_CONSTRAINED_:
12688                                 CHECK_OPSIZE (6);
12689                                 token = read32 (ip + 2);
12690                                 constrained_class = mini_get_class (method, token, generic_context);
12691                                 CHECK_TYPELOAD (constrained_class);
12692                                 ip += 6;
12693                                 break;
12694                         case CEE_CPBLK:
12695                         case CEE_INITBLK: {
12696                                 MonoInst *iargs [3];
12697                                 CHECK_STACK (3);
12698                                 sp -= 3;
12699
12700                                 /* Skip optimized paths for volatile operations. */
12701                                 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)) {
12702                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
12703                                 } 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)) {
12704                                         /* emit_memset only works when val == 0 */
12705                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
12706                                 } else {
12707                                         MonoInst *call;
12708                                         iargs [0] = sp [0];
12709                                         iargs [1] = sp [1];
12710                                         iargs [2] = sp [2];
12711                                         if (ip [1] == CEE_CPBLK) {
12712                                                 /*
12713                                                  * FIXME: It's unclear whether we should be emitting both the acquire
12714                                                  * and release barriers for cpblk. It is technically both a load and
12715                                                  * store operation, so it seems like that's the sensible thing to do.
12716                                                  *
12717                                                  * FIXME: We emit full barriers on both sides of the operation for
12718                                                  * simplicity. We should have a separate atomic memcpy method instead.
12719                                                  */
12720                                                 MonoMethod *memcpy_method = get_memcpy_method ();
12721
12722                                                 if (ins_flag & MONO_INST_VOLATILE)
12723                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12724
12725                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
12726                                                 call->flags |= ins_flag;
12727
12728                                                 if (ins_flag & MONO_INST_VOLATILE)
12729                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12730                                         } else {
12731                                                 MonoMethod *memset_method = get_memset_method ();
12732                                                 if (ins_flag & MONO_INST_VOLATILE) {
12733                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
12734                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
12735                                                 }
12736                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
12737                                                 call->flags |= ins_flag;
12738                                         }
12739                                 }
12740                                 ip += 2;
12741                                 ins_flag = 0;
12742                                 inline_costs += 1;
12743                                 break;
12744                         }
12745                         case CEE_NO_:
12746                                 CHECK_OPSIZE (3);
12747                                 if (ip [2] & 0x1)
12748                                         ins_flag |= MONO_INST_NOTYPECHECK;
12749                                 if (ip [2] & 0x2)
12750                                         ins_flag |= MONO_INST_NORANGECHECK;
12751                                 /* we ignore the no-nullcheck for now since we
12752                                  * really do it explicitly only when doing callvirt->call
12753                                  */
12754                                 ip += 3;
12755                                 break;
12756                         case CEE_RETHROW: {
12757                                 MonoInst *load;
12758                                 int handler_offset = -1;
12759
12760                                 for (i = 0; i < header->num_clauses; ++i) {
12761                                         MonoExceptionClause *clause = &header->clauses [i];
12762                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12763                                                 handler_offset = clause->handler_offset;
12764                                                 break;
12765                                         }
12766                                 }
12767
12768                                 bblock->flags |= BB_EXCEPTION_UNSAFE;
12769
12770                                 if (handler_offset == -1)
12771                                         UNVERIFIED;
12772
12773                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12774                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12775                                 ins->sreg1 = load->dreg;
12776                                 MONO_ADD_INS (bblock, ins);
12777
12778                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12779                                 MONO_ADD_INS (bblock, ins);
12780
12781                                 sp = stack_start;
12782                                 link_bblock (cfg, bblock, end_bblock);
12783                                 start_new_bblock = 1;
12784                                 ip += 2;
12785                                 break;
12786                         }
12787                         case CEE_SIZEOF: {
12788                                 guint32 val;
12789                                 int ialign;
12790
12791                                 CHECK_STACK_OVF (1);
12792                                 CHECK_OPSIZE (6);
12793                                 token = read32 (ip + 2);
12794                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12795                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12796                                         CHECK_CFG_ERROR;
12797
12798                                         val = mono_type_size (type, &ialign);
12799                                 } else {
12800                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12801                                         CHECK_TYPELOAD (klass);
12802
12803                                         val = mono_type_size (&klass->byval_arg, &ialign);
12804
12805                                         if (mini_is_gsharedvt_klass (cfg, klass))
12806                                                 GSHAREDVT_FAILURE (*ip);
12807                                 }
12808                                 EMIT_NEW_ICONST (cfg, ins, val);
12809                                 *sp++= ins;
12810                                 ip += 6;
12811                                 break;
12812                         }
12813                         case CEE_REFANYTYPE: {
12814                                 MonoInst *src_var, *src;
12815
12816                                 GSHAREDVT_FAILURE (*ip);
12817
12818                                 CHECK_STACK (1);
12819                                 --sp;
12820
12821                                 // FIXME:
12822                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12823                                 if (!src_var)
12824                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12825                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12826                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12827                                 *sp++ = ins;
12828                                 ip += 2;
12829                                 break;
12830                         }
12831                         case CEE_READONLY_:
12832                                 readonly = TRUE;
12833                                 ip += 2;
12834                                 break;
12835
12836                         case CEE_UNUSED56:
12837                         case CEE_UNUSED57:
12838                         case CEE_UNUSED70:
12839                         case CEE_UNUSED:
12840                         case CEE_UNUSED99:
12841                                 UNVERIFIED;
12842
12843                         default:
12844                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12845                                 UNVERIFIED;
12846                         }
12847                         break;
12848                 }
12849                 case CEE_UNUSED58:
12850                 case CEE_UNUSED1:
12851                         UNVERIFIED;
12852
12853                 default:
12854                         g_warning ("opcode 0x%02x not handled", *ip);
12855                         UNVERIFIED;
12856                 }
12857         }
12858         if (start_new_bblock != 1)
12859                 UNVERIFIED;
12860
12861         bblock->cil_length = ip - bblock->cil_code;
12862         if (bblock->next_bb) {
12863                 /* This could already be set because of inlining, #693905 */
12864                 MonoBasicBlock *bb = bblock;
12865
12866                 while (bb->next_bb)
12867                         bb = bb->next_bb;
12868                 bb->next_bb = end_bblock;
12869         } else {
12870                 bblock->next_bb = end_bblock;
12871         }
12872
12873         if (cfg->method == method && cfg->domainvar) {
12874                 MonoInst *store;
12875                 MonoInst *get_domain;
12876
12877                 cfg->cbb = init_localsbb;
12878
12879                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
12880                         MONO_ADD_INS (cfg->cbb, get_domain);
12881                 } else {
12882                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
12883                 }
12884                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12885                 MONO_ADD_INS (cfg->cbb, store);
12886         }
12887
12888 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12889         if (cfg->compile_aot)
12890                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12891                 mono_get_got_var (cfg);
12892 #endif
12893
12894         if (cfg->method == method && cfg->got_var)
12895                 mono_emit_load_got_addr (cfg);
12896
12897         if (init_localsbb) {
12898                 cfg->cbb = init_localsbb;
12899                 cfg->ip = NULL;
12900                 for (i = 0; i < header->num_locals; ++i) {
12901                         emit_init_local (cfg, i, header->locals [i], init_locals);
12902                 }
12903         }
12904
12905         if (cfg->init_ref_vars && cfg->method == method) {
12906                 /* Emit initialization for ref vars */
12907                 // FIXME: Avoid duplication initialization for IL locals.
12908                 for (i = 0; i < cfg->num_varinfo; ++i) {
12909                         MonoInst *ins = cfg->varinfo [i];
12910
12911                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12912                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12913                 }
12914         }
12915
12916         if (cfg->lmf_var && cfg->method == method) {
12917                 cfg->cbb = init_localsbb;
12918                 emit_push_lmf (cfg);
12919         }
12920
12921         cfg->cbb = init_localsbb;
12922         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12923
12924         if (seq_points) {
12925                 MonoBasicBlock *bb;
12926
12927                 /*
12928                  * Make seq points at backward branch targets interruptable.
12929                  */
12930                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12931                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12932                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12933         }
12934
12935         /* Add a sequence point for method entry/exit events */
12936         if (seq_points && cfg->gen_sdb_seq_points) {
12937                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12938                 MONO_ADD_INS (init_localsbb, ins);
12939                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12940                 MONO_ADD_INS (cfg->bb_exit, ins);
12941         }
12942
12943         /*
12944          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12945          * the code they refer to was dead (#11880).
12946          */
12947         if (sym_seq_points) {
12948                 for (i = 0; i < header->code_size; ++i) {
12949                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12950                                 MonoInst *ins;
12951
12952                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12953                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12954                         }
12955                 }
12956         }
12957
12958         cfg->ip = NULL;
12959
12960         if (cfg->method == method) {
12961                 MonoBasicBlock *bb;
12962                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12963                         bb->region = mono_find_block_region (cfg, bb->real_offset);
12964                         if (cfg->spvars)
12965                                 mono_create_spvar_for_region (cfg, bb->region);
12966                         if (cfg->verbose_level > 2)
12967                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12968                 }
12969         }
12970
12971         if (inline_costs < 0) {
12972                 char *mname;
12973
12974                 /* Method is too large */
12975                 mname = mono_method_full_name (method, TRUE);
12976                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
12977                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
12978                 g_free (mname);
12979         }
12980
12981         if ((cfg->verbose_level > 2) && (cfg->method == method))
12982                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12983
12984         goto cleanup;
12985
12986 mono_error_exit:
12987         g_assert (!mono_error_ok (&cfg->error));
12988         goto cleanup;
12989
12990  exception_exit:
12991         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12992         goto cleanup;
12993
12994  unverified:
12995         set_exception_type_from_invalid_il (cfg, method, ip);
12996         goto cleanup;
12997
12998  cleanup:
12999         g_slist_free (class_inits);
13000         mono_basic_block_free (original_bb);
13001         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13002         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13003         if (cfg->exception_type)
13004                 return -1;
13005         else
13006                 return inline_costs;
13007 }
13008
13009 static int
13010 store_membase_reg_to_store_membase_imm (int opcode)
13011 {
13012         switch (opcode) {
13013         case OP_STORE_MEMBASE_REG:
13014                 return OP_STORE_MEMBASE_IMM;
13015         case OP_STOREI1_MEMBASE_REG:
13016                 return OP_STOREI1_MEMBASE_IMM;
13017         case OP_STOREI2_MEMBASE_REG:
13018                 return OP_STOREI2_MEMBASE_IMM;
13019         case OP_STOREI4_MEMBASE_REG:
13020                 return OP_STOREI4_MEMBASE_IMM;
13021         case OP_STOREI8_MEMBASE_REG:
13022                 return OP_STOREI8_MEMBASE_IMM;
13023         default:
13024                 g_assert_not_reached ();
13025         }
13026
13027         return -1;
13028 }
13029
13030 int
13031 mono_op_to_op_imm (int opcode)
13032 {
13033         switch (opcode) {
13034         case OP_IADD:
13035                 return OP_IADD_IMM;
13036         case OP_ISUB:
13037                 return OP_ISUB_IMM;
13038         case OP_IDIV:
13039                 return OP_IDIV_IMM;
13040         case OP_IDIV_UN:
13041                 return OP_IDIV_UN_IMM;
13042         case OP_IREM:
13043                 return OP_IREM_IMM;
13044         case OP_IREM_UN:
13045                 return OP_IREM_UN_IMM;
13046         case OP_IMUL:
13047                 return OP_IMUL_IMM;
13048         case OP_IAND:
13049                 return OP_IAND_IMM;
13050         case OP_IOR:
13051                 return OP_IOR_IMM;
13052         case OP_IXOR:
13053                 return OP_IXOR_IMM;
13054         case OP_ISHL:
13055                 return OP_ISHL_IMM;
13056         case OP_ISHR:
13057                 return OP_ISHR_IMM;
13058         case OP_ISHR_UN:
13059                 return OP_ISHR_UN_IMM;
13060
13061         case OP_LADD:
13062                 return OP_LADD_IMM;
13063         case OP_LSUB:
13064                 return OP_LSUB_IMM;
13065         case OP_LAND:
13066                 return OP_LAND_IMM;
13067         case OP_LOR:
13068                 return OP_LOR_IMM;
13069         case OP_LXOR:
13070                 return OP_LXOR_IMM;
13071         case OP_LSHL:
13072                 return OP_LSHL_IMM;
13073         case OP_LSHR:
13074                 return OP_LSHR_IMM;
13075         case OP_LSHR_UN:
13076                 return OP_LSHR_UN_IMM;
13077 #if SIZEOF_REGISTER == 8
13078         case OP_LREM:
13079                 return OP_LREM_IMM;
13080 #endif
13081
13082         case OP_COMPARE:
13083                 return OP_COMPARE_IMM;
13084         case OP_ICOMPARE:
13085                 return OP_ICOMPARE_IMM;
13086         case OP_LCOMPARE:
13087                 return OP_LCOMPARE_IMM;
13088
13089         case OP_STORE_MEMBASE_REG:
13090                 return OP_STORE_MEMBASE_IMM;
13091         case OP_STOREI1_MEMBASE_REG:
13092                 return OP_STOREI1_MEMBASE_IMM;
13093         case OP_STOREI2_MEMBASE_REG:
13094                 return OP_STOREI2_MEMBASE_IMM;
13095         case OP_STOREI4_MEMBASE_REG:
13096                 return OP_STOREI4_MEMBASE_IMM;
13097
13098 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13099         case OP_X86_PUSH:
13100                 return OP_X86_PUSH_IMM;
13101         case OP_X86_COMPARE_MEMBASE_REG:
13102                 return OP_X86_COMPARE_MEMBASE_IMM;
13103 #endif
13104 #if defined(TARGET_AMD64)
13105         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13106                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13107 #endif
13108         case OP_VOIDCALL_REG:
13109                 return OP_VOIDCALL;
13110         case OP_CALL_REG:
13111                 return OP_CALL;
13112         case OP_LCALL_REG:
13113                 return OP_LCALL;
13114         case OP_FCALL_REG:
13115                 return OP_FCALL;
13116         case OP_LOCALLOC:
13117                 return OP_LOCALLOC_IMM;
13118         }
13119
13120         return -1;
13121 }
13122
13123 static int
13124 ldind_to_load_membase (int opcode)
13125 {
13126         switch (opcode) {
13127         case CEE_LDIND_I1:
13128                 return OP_LOADI1_MEMBASE;
13129         case CEE_LDIND_U1:
13130                 return OP_LOADU1_MEMBASE;
13131         case CEE_LDIND_I2:
13132                 return OP_LOADI2_MEMBASE;
13133         case CEE_LDIND_U2:
13134                 return OP_LOADU2_MEMBASE;
13135         case CEE_LDIND_I4:
13136                 return OP_LOADI4_MEMBASE;
13137         case CEE_LDIND_U4:
13138                 return OP_LOADU4_MEMBASE;
13139         case CEE_LDIND_I:
13140                 return OP_LOAD_MEMBASE;
13141         case CEE_LDIND_REF:
13142                 return OP_LOAD_MEMBASE;
13143         case CEE_LDIND_I8:
13144                 return OP_LOADI8_MEMBASE;
13145         case CEE_LDIND_R4:
13146                 return OP_LOADR4_MEMBASE;
13147         case CEE_LDIND_R8:
13148                 return OP_LOADR8_MEMBASE;
13149         default:
13150                 g_assert_not_reached ();
13151         }
13152
13153         return -1;
13154 }
13155
13156 static int
13157 stind_to_store_membase (int opcode)
13158 {
13159         switch (opcode) {
13160         case CEE_STIND_I1:
13161                 return OP_STOREI1_MEMBASE_REG;
13162         case CEE_STIND_I2:
13163                 return OP_STOREI2_MEMBASE_REG;
13164         case CEE_STIND_I4:
13165                 return OP_STOREI4_MEMBASE_REG;
13166         case CEE_STIND_I:
13167         case CEE_STIND_REF:
13168                 return OP_STORE_MEMBASE_REG;
13169         case CEE_STIND_I8:
13170                 return OP_STOREI8_MEMBASE_REG;
13171         case CEE_STIND_R4:
13172                 return OP_STORER4_MEMBASE_REG;
13173         case CEE_STIND_R8:
13174                 return OP_STORER8_MEMBASE_REG;
13175         default:
13176                 g_assert_not_reached ();
13177         }
13178
13179         return -1;
13180 }
13181
13182 int
13183 mono_load_membase_to_load_mem (int opcode)
13184 {
13185         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13186 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13187         switch (opcode) {
13188         case OP_LOAD_MEMBASE:
13189                 return OP_LOAD_MEM;
13190         case OP_LOADU1_MEMBASE:
13191                 return OP_LOADU1_MEM;
13192         case OP_LOADU2_MEMBASE:
13193                 return OP_LOADU2_MEM;
13194         case OP_LOADI4_MEMBASE:
13195                 return OP_LOADI4_MEM;
13196         case OP_LOADU4_MEMBASE:
13197                 return OP_LOADU4_MEM;
13198 #if SIZEOF_REGISTER == 8
13199         case OP_LOADI8_MEMBASE:
13200                 return OP_LOADI8_MEM;
13201 #endif
13202         }
13203 #endif
13204
13205         return -1;
13206 }
13207
13208 static inline int
13209 op_to_op_dest_membase (int store_opcode, int opcode)
13210 {
13211 #if defined(TARGET_X86)
13212         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13213                 return -1;
13214
13215         switch (opcode) {
13216         case OP_IADD:
13217                 return OP_X86_ADD_MEMBASE_REG;
13218         case OP_ISUB:
13219                 return OP_X86_SUB_MEMBASE_REG;
13220         case OP_IAND:
13221                 return OP_X86_AND_MEMBASE_REG;
13222         case OP_IOR:
13223                 return OP_X86_OR_MEMBASE_REG;
13224         case OP_IXOR:
13225                 return OP_X86_XOR_MEMBASE_REG;
13226         case OP_ADD_IMM:
13227         case OP_IADD_IMM:
13228                 return OP_X86_ADD_MEMBASE_IMM;
13229         case OP_SUB_IMM:
13230         case OP_ISUB_IMM:
13231                 return OP_X86_SUB_MEMBASE_IMM;
13232         case OP_AND_IMM:
13233         case OP_IAND_IMM:
13234                 return OP_X86_AND_MEMBASE_IMM;
13235         case OP_OR_IMM:
13236         case OP_IOR_IMM:
13237                 return OP_X86_OR_MEMBASE_IMM;
13238         case OP_XOR_IMM:
13239         case OP_IXOR_IMM:
13240                 return OP_X86_XOR_MEMBASE_IMM;
13241         case OP_MOVE:
13242                 return OP_NOP;
13243         }
13244 #endif
13245
13246 #if defined(TARGET_AMD64)
13247         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13248                 return -1;
13249
13250         switch (opcode) {
13251         case OP_IADD:
13252                 return OP_X86_ADD_MEMBASE_REG;
13253         case OP_ISUB:
13254                 return OP_X86_SUB_MEMBASE_REG;
13255         case OP_IAND:
13256                 return OP_X86_AND_MEMBASE_REG;
13257         case OP_IOR:
13258                 return OP_X86_OR_MEMBASE_REG;
13259         case OP_IXOR:
13260                 return OP_X86_XOR_MEMBASE_REG;
13261         case OP_IADD_IMM:
13262                 return OP_X86_ADD_MEMBASE_IMM;
13263         case OP_ISUB_IMM:
13264                 return OP_X86_SUB_MEMBASE_IMM;
13265         case OP_IAND_IMM:
13266                 return OP_X86_AND_MEMBASE_IMM;
13267         case OP_IOR_IMM:
13268                 return OP_X86_OR_MEMBASE_IMM;
13269         case OP_IXOR_IMM:
13270                 return OP_X86_XOR_MEMBASE_IMM;
13271         case OP_LADD:
13272                 return OP_AMD64_ADD_MEMBASE_REG;
13273         case OP_LSUB:
13274                 return OP_AMD64_SUB_MEMBASE_REG;
13275         case OP_LAND:
13276                 return OP_AMD64_AND_MEMBASE_REG;
13277         case OP_LOR:
13278                 return OP_AMD64_OR_MEMBASE_REG;
13279         case OP_LXOR:
13280                 return OP_AMD64_XOR_MEMBASE_REG;
13281         case OP_ADD_IMM:
13282         case OP_LADD_IMM:
13283                 return OP_AMD64_ADD_MEMBASE_IMM;
13284         case OP_SUB_IMM:
13285         case OP_LSUB_IMM:
13286                 return OP_AMD64_SUB_MEMBASE_IMM;
13287         case OP_AND_IMM:
13288         case OP_LAND_IMM:
13289                 return OP_AMD64_AND_MEMBASE_IMM;
13290         case OP_OR_IMM:
13291         case OP_LOR_IMM:
13292                 return OP_AMD64_OR_MEMBASE_IMM;
13293         case OP_XOR_IMM:
13294         case OP_LXOR_IMM:
13295                 return OP_AMD64_XOR_MEMBASE_IMM;
13296         case OP_MOVE:
13297                 return OP_NOP;
13298         }
13299 #endif
13300
13301         return -1;
13302 }
13303
13304 static inline int
13305 op_to_op_store_membase (int store_opcode, int opcode)
13306 {
13307 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13308         switch (opcode) {
13309         case OP_ICEQ:
13310                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13311                         return OP_X86_SETEQ_MEMBASE;
13312         case OP_CNE:
13313                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13314                         return OP_X86_SETNE_MEMBASE;
13315         }
13316 #endif
13317
13318         return -1;
13319 }
13320
13321 static inline int
13322 op_to_op_src1_membase (int load_opcode, int opcode)
13323 {
13324 #ifdef TARGET_X86
13325         /* FIXME: This has sign extension issues */
13326         /*
13327         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13328                 return OP_X86_COMPARE_MEMBASE8_IMM;
13329         */
13330
13331         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13332                 return -1;
13333
13334         switch (opcode) {
13335         case OP_X86_PUSH:
13336                 return OP_X86_PUSH_MEMBASE;
13337         case OP_COMPARE_IMM:
13338         case OP_ICOMPARE_IMM:
13339                 return OP_X86_COMPARE_MEMBASE_IMM;
13340         case OP_COMPARE:
13341         case OP_ICOMPARE:
13342                 return OP_X86_COMPARE_MEMBASE_REG;
13343         }
13344 #endif
13345
13346 #ifdef TARGET_AMD64
13347         /* FIXME: This has sign extension issues */
13348         /*
13349         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13350                 return OP_X86_COMPARE_MEMBASE8_IMM;
13351         */
13352
13353         switch (opcode) {
13354         case OP_X86_PUSH:
13355 #ifdef __mono_ilp32__
13356                 if (load_opcode == OP_LOADI8_MEMBASE)
13357 #else
13358                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13359 #endif
13360                         return OP_X86_PUSH_MEMBASE;
13361                 break;
13362                 /* FIXME: This only works for 32 bit immediates
13363         case OP_COMPARE_IMM:
13364         case OP_LCOMPARE_IMM:
13365                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13366                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13367                 */
13368         case OP_ICOMPARE_IMM:
13369                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13370                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13371                 break;
13372         case OP_COMPARE:
13373         case OP_LCOMPARE:
13374 #ifdef __mono_ilp32__
13375                 if (load_opcode == OP_LOAD_MEMBASE)
13376                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13377                 if (load_opcode == OP_LOADI8_MEMBASE)
13378 #else
13379                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13380 #endif
13381                         return OP_AMD64_COMPARE_MEMBASE_REG;
13382                 break;
13383         case OP_ICOMPARE:
13384                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13385                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13386                 break;
13387         }
13388 #endif
13389
13390         return -1;
13391 }
13392
13393 static inline int
13394 op_to_op_src2_membase (int load_opcode, int opcode)
13395 {
13396 #ifdef TARGET_X86
13397         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13398                 return -1;
13399
13400         switch (opcode) {
13401         case OP_COMPARE:
13402         case OP_ICOMPARE:
13403                 return OP_X86_COMPARE_REG_MEMBASE;
13404         case OP_IADD:
13405                 return OP_X86_ADD_REG_MEMBASE;
13406         case OP_ISUB:
13407                 return OP_X86_SUB_REG_MEMBASE;
13408         case OP_IAND:
13409                 return OP_X86_AND_REG_MEMBASE;
13410         case OP_IOR:
13411                 return OP_X86_OR_REG_MEMBASE;
13412         case OP_IXOR:
13413                 return OP_X86_XOR_REG_MEMBASE;
13414         }
13415 #endif
13416
13417 #ifdef TARGET_AMD64
13418 #ifdef __mono_ilp32__
13419         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
13420 #else
13421         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)) {
13422 #endif
13423                 switch (opcode) {
13424                 case OP_ICOMPARE:
13425                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13426                 case OP_IADD:
13427                         return OP_X86_ADD_REG_MEMBASE;
13428                 case OP_ISUB:
13429                         return OP_X86_SUB_REG_MEMBASE;
13430                 case OP_IAND:
13431                         return OP_X86_AND_REG_MEMBASE;
13432                 case OP_IOR:
13433                         return OP_X86_OR_REG_MEMBASE;
13434                 case OP_IXOR:
13435                         return OP_X86_XOR_REG_MEMBASE;
13436                 }
13437 #ifdef __mono_ilp32__
13438         } else if (load_opcode == OP_LOADI8_MEMBASE) {
13439 #else
13440         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE)) {
13441 #endif
13442                 switch (opcode) {
13443                 case OP_COMPARE:
13444                 case OP_LCOMPARE:
13445                         return OP_AMD64_COMPARE_REG_MEMBASE;
13446                 case OP_LADD:
13447                         return OP_AMD64_ADD_REG_MEMBASE;
13448                 case OP_LSUB:
13449                         return OP_AMD64_SUB_REG_MEMBASE;
13450                 case OP_LAND:
13451                         return OP_AMD64_AND_REG_MEMBASE;
13452                 case OP_LOR:
13453                         return OP_AMD64_OR_REG_MEMBASE;
13454                 case OP_LXOR:
13455                         return OP_AMD64_XOR_REG_MEMBASE;
13456                 }
13457         }
13458 #endif
13459
13460         return -1;
13461 }
13462
13463 int
13464 mono_op_to_op_imm_noemul (int opcode)
13465 {
13466         switch (opcode) {
13467 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13468         case OP_LSHR:
13469         case OP_LSHL:
13470         case OP_LSHR_UN:
13471                 return -1;
13472 #endif
13473 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13474         case OP_IDIV:
13475         case OP_IDIV_UN:
13476         case OP_IREM:
13477         case OP_IREM_UN:
13478                 return -1;
13479 #endif
13480 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13481         case OP_IMUL:
13482                 return -1;
13483 #endif
13484         default:
13485                 return mono_op_to_op_imm (opcode);
13486         }
13487 }
13488
13489 /**
13490  * mono_handle_global_vregs:
13491  *
13492  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13493  * for them.
13494  */
13495 void
13496 mono_handle_global_vregs (MonoCompile *cfg)
13497 {
13498         gint32 *vreg_to_bb;
13499         MonoBasicBlock *bb;
13500         int i, pos;
13501
13502         vreg_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13503
13504 #ifdef MONO_ARCH_SIMD_INTRINSICS
13505         if (cfg->uses_simd_intrinsics)
13506                 mono_simd_simplify_indirection (cfg);
13507 #endif
13508
13509         /* Find local vregs used in more than one bb */
13510         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13511                 MonoInst *ins = bb->code;
13512                 int block_num = bb->block_num;
13513
13514                 if (cfg->verbose_level > 2)
13515                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13516
13517                 cfg->cbb = bb;
13518                 for (; ins; ins = ins->next) {
13519                         const char *spec = INS_INFO (ins->opcode);
13520                         int regtype = 0, regindex;
13521                         gint32 prev_bb;
13522
13523                         if (G_UNLIKELY (cfg->verbose_level > 2))
13524                                 mono_print_ins (ins);
13525
13526                         g_assert (ins->opcode >= MONO_CEE_LAST);
13527
13528                         for (regindex = 0; regindex < 4; regindex ++) {
13529                                 int vreg = 0;
13530
13531                                 if (regindex == 0) {
13532                                         regtype = spec [MONO_INST_DEST];
13533                                         if (regtype == ' ')
13534                                                 continue;
13535                                         vreg = ins->dreg;
13536                                 } else if (regindex == 1) {
13537                                         regtype = spec [MONO_INST_SRC1];
13538                                         if (regtype == ' ')
13539                                                 continue;
13540                                         vreg = ins->sreg1;
13541                                 } else if (regindex == 2) {
13542                                         regtype = spec [MONO_INST_SRC2];
13543                                         if (regtype == ' ')
13544                                                 continue;
13545                                         vreg = ins->sreg2;
13546                                 } else if (regindex == 3) {
13547                                         regtype = spec [MONO_INST_SRC3];
13548                                         if (regtype == ' ')
13549                                                 continue;
13550                                         vreg = ins->sreg3;
13551                                 }
13552
13553 #if SIZEOF_REGISTER == 4
13554                                 /* In the LLVM case, the long opcodes are not decomposed */
13555                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13556                                         /*
13557                                          * Since some instructions reference the original long vreg,
13558                                          * and some reference the two component vregs, it is quite hard
13559                                          * to determine when it needs to be global. So be conservative.
13560                                          */
13561                                         if (!get_vreg_to_inst (cfg, vreg)) {
13562                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13563
13564                                                 if (cfg->verbose_level > 2)
13565                                                         printf ("LONG VREG R%d made global.\n", vreg);
13566                                         }
13567
13568                                         /*
13569                                          * Make the component vregs volatile since the optimizations can
13570                                          * get confused otherwise.
13571                                          */
13572                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
13573                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
13574                                 }
13575 #endif
13576
13577                                 g_assert (vreg != -1);
13578
13579                                 prev_bb = vreg_to_bb [vreg];
13580                                 if (prev_bb == 0) {
13581                                         /* 0 is a valid block num */
13582                                         vreg_to_bb [vreg] = block_num + 1;
13583                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13584                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13585                                                 continue;
13586
13587                                         if (!get_vreg_to_inst (cfg, vreg)) {
13588                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13589                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13590
13591                                                 switch (regtype) {
13592                                                 case 'i':
13593                                                         if (vreg_is_ref (cfg, vreg))
13594                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13595                                                         else
13596                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13597                                                         break;
13598                                                 case 'l':
13599                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13600                                                         break;
13601                                                 case 'f':
13602                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13603                                                         break;
13604                                                 case 'v':
13605                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13606                                                         break;
13607                                                 default:
13608                                                         g_assert_not_reached ();
13609                                                 }
13610                                         }
13611
13612                                         /* Flag as having been used in more than one bb */
13613                                         vreg_to_bb [vreg] = -1;
13614                                 }
13615                         }
13616                 }
13617         }
13618
13619         /* If a variable is used in only one bblock, convert it into a local vreg */
13620         for (i = 0; i < cfg->num_varinfo; i++) {
13621                 MonoInst *var = cfg->varinfo [i];
13622                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13623
13624                 switch (var->type) {
13625                 case STACK_I4:
13626                 case STACK_OBJ:
13627                 case STACK_PTR:
13628                 case STACK_MP:
13629                 case STACK_VTYPE:
13630 #if SIZEOF_REGISTER == 8
13631                 case STACK_I8:
13632 #endif
13633 #if !defined(TARGET_X86)
13634                 /* Enabling this screws up the fp stack on x86 */
13635                 case STACK_R8:
13636 #endif
13637                         if (mono_arch_is_soft_float ())
13638                                 break;
13639
13640                         /* Arguments are implicitly global */
13641                         /* Putting R4 vars into registers doesn't work currently */
13642                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13643                         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) {
13644                                 /*
13645                                  * Make that the variable's liveness interval doesn't contain a call, since
13646                                  * that would cause the lvreg to be spilled, making the whole optimization
13647                                  * useless.
13648                                  */
13649                                 /* This is too slow for JIT compilation */
13650 #if 0
13651                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13652                                         MonoInst *ins;
13653                                         int def_index, call_index, ins_index;
13654                                         gboolean spilled = FALSE;
13655
13656                                         def_index = -1;
13657                                         call_index = -1;
13658                                         ins_index = 0;
13659                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13660                                                 const char *spec = INS_INFO (ins->opcode);
13661
13662                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13663                                                         def_index = ins_index;
13664
13665                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13666                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13667                                                         if (call_index > def_index) {
13668                                                                 spilled = TRUE;
13669                                                                 break;
13670                                                         }
13671                                                 }
13672
13673                                                 if (MONO_IS_CALL (ins))
13674                                                         call_index = ins_index;
13675
13676                                                 ins_index ++;
13677                                         }
13678
13679                                         if (spilled)
13680                                                 break;
13681                                 }
13682 #endif
13683
13684                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13685                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13686                                 var->flags |= MONO_INST_IS_DEAD;
13687                                 cfg->vreg_to_inst [var->dreg] = NULL;
13688                         }
13689                         break;
13690                 }
13691         }
13692
13693         /*
13694          * Compress the varinfo and vars tables so the liveness computation is faster and
13695          * takes up less space.
13696          */
13697         pos = 0;
13698         for (i = 0; i < cfg->num_varinfo; ++i) {
13699                 MonoInst *var = cfg->varinfo [i];
13700                 if (pos < i && cfg->locals_start == i)
13701                         cfg->locals_start = pos;
13702                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13703                         if (pos < i) {
13704                                 cfg->varinfo [pos] = cfg->varinfo [i];
13705                                 cfg->varinfo [pos]->inst_c0 = pos;
13706                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13707                                 cfg->vars [pos].idx = pos;
13708 #if SIZEOF_REGISTER == 4
13709                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13710                                         /* Modify the two component vars too */
13711                                         MonoInst *var1;
13712
13713                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
13714                                         var1->inst_c0 = pos;
13715                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
13716                                         var1->inst_c0 = pos;
13717                                 }
13718 #endif
13719                         }
13720                         pos ++;
13721                 }
13722         }
13723         cfg->num_varinfo = pos;
13724         if (cfg->locals_start > cfg->num_varinfo)
13725                 cfg->locals_start = cfg->num_varinfo;
13726 }
13727
13728 /**
13729  * mono_spill_global_vars:
13730  *
13731  *   Generate spill code for variables which are not allocated to registers,
13732  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13733  * code is generated which could be optimized by the local optimization passes.
13734  */
13735 void
13736 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13737 {
13738         MonoBasicBlock *bb;
13739         char spec2 [16];
13740         int orig_next_vreg;
13741         guint32 *vreg_to_lvreg;
13742         guint32 *lvregs;
13743         guint32 i, lvregs_len;
13744         gboolean dest_has_lvreg = FALSE;
13745         guint32 stacktypes [128];
13746         MonoInst **live_range_start, **live_range_end;
13747         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13748         int *gsharedvt_vreg_to_idx = NULL;
13749
13750         *need_local_opts = FALSE;
13751
13752         memset (spec2, 0, sizeof (spec2));
13753
13754         /* FIXME: Move this function to mini.c */
13755         stacktypes ['i'] = STACK_PTR;
13756         stacktypes ['l'] = STACK_I8;
13757         stacktypes ['f'] = STACK_R8;
13758 #ifdef MONO_ARCH_SIMD_INTRINSICS
13759         stacktypes ['x'] = STACK_VTYPE;
13760 #endif
13761
13762 #if SIZEOF_REGISTER == 4
13763         /* Create MonoInsts for longs */
13764         for (i = 0; i < cfg->num_varinfo; i++) {
13765                 MonoInst *ins = cfg->varinfo [i];
13766
13767                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13768                         switch (ins->type) {
13769                         case STACK_R8:
13770                         case STACK_I8: {
13771                                 MonoInst *tree;
13772
13773                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13774                                         break;
13775
13776                                 g_assert (ins->opcode == OP_REGOFFSET);
13777
13778                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
13779                                 g_assert (tree);
13780                                 tree->opcode = OP_REGOFFSET;
13781                                 tree->inst_basereg = ins->inst_basereg;
13782                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13783
13784                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
13785                                 g_assert (tree);
13786                                 tree->opcode = OP_REGOFFSET;
13787                                 tree->inst_basereg = ins->inst_basereg;
13788                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13789                                 break;
13790                         }
13791                         default:
13792                                 break;
13793                         }
13794                 }
13795         }
13796 #endif
13797
13798         if (cfg->compute_gc_maps) {
13799                 /* registers need liveness info even for !non refs */
13800                 for (i = 0; i < cfg->num_varinfo; i++) {
13801                         MonoInst *ins = cfg->varinfo [i];
13802
13803                         if (ins->opcode == OP_REGVAR)
13804                                 ins->flags |= MONO_INST_GC_TRACK;
13805                 }
13806         }
13807
13808         if (cfg->gsharedvt) {
13809                 gsharedvt_vreg_to_idx = mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13810
13811                 for (i = 0; i < cfg->num_varinfo; ++i) {
13812                         MonoInst *ins = cfg->varinfo [i];
13813                         int idx;
13814
13815                         if (mini_is_gsharedvt_variable_type (cfg, ins->inst_vtype)) {
13816                                 if (i >= cfg->locals_start) {
13817                                         /* Local */
13818                                         idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13819                                         gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13820                                         ins->opcode = OP_GSHAREDVT_LOCAL;
13821                                         ins->inst_imm = idx;
13822                                 } else {
13823                                         /* Arg */
13824                                         gsharedvt_vreg_to_idx [ins->dreg] = -1;
13825                                         ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13826                                 }
13827                         }
13828                 }
13829         }
13830
13831         /* FIXME: widening and truncation */
13832
13833         /*
13834          * As an optimization, when a variable allocated to the stack is first loaded into
13835          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13836          * the variable again.
13837          */
13838         orig_next_vreg = cfg->next_vreg;
13839         vreg_to_lvreg = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13840         lvregs = mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
13841         lvregs_len = 0;
13842
13843         /*
13844          * These arrays contain the first and last instructions accessing a given
13845          * variable.
13846          * Since we emit bblocks in the same order we process them here, and we
13847          * don't split live ranges, these will precisely describe the live range of
13848          * the variable, i.e. the instruction range where a valid value can be found
13849          * in the variables location.
13850          * The live range is computed using the liveness info computed by the liveness pass.
13851          * We can't use vmv->range, since that is an abstract live range, and we need
13852          * one which is instruction precise.
13853          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13854          */
13855         /* FIXME: Only do this if debugging info is requested */
13856         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13857         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13858         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13859         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13860
13861         /* Add spill loads/stores */
13862         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13863                 MonoInst *ins;
13864
13865                 if (cfg->verbose_level > 2)
13866                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13867
13868                 /* Clear vreg_to_lvreg array */
13869                 for (i = 0; i < lvregs_len; i++)
13870                         vreg_to_lvreg [lvregs [i]] = 0;
13871                 lvregs_len = 0;
13872
13873                 cfg->cbb = bb;
13874                 MONO_BB_FOR_EACH_INS (bb, ins) {
13875                         const char *spec = INS_INFO (ins->opcode);
13876                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13877                         gboolean store, no_lvreg;
13878                         int sregs [MONO_MAX_SRC_REGS];
13879
13880                         if (G_UNLIKELY (cfg->verbose_level > 2))
13881                                 mono_print_ins (ins);
13882
13883                         if (ins->opcode == OP_NOP)
13884                                 continue;
13885
13886                         /*
13887                          * We handle LDADDR here as well, since it can only be decomposed
13888                          * when variable addresses are known.
13889                          */
13890                         if (ins->opcode == OP_LDADDR) {
13891                                 MonoInst *var = ins->inst_p0;
13892
13893                                 if (var->opcode == OP_VTARG_ADDR) {
13894                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13895                                         MonoInst *vtaddr = var->inst_left;
13896                                         if (vtaddr->opcode == OP_REGVAR) {
13897                                                 ins->opcode = OP_MOVE;
13898                                                 ins->sreg1 = vtaddr->dreg;
13899                                         }
13900                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13901                                                 ins->opcode = OP_LOAD_MEMBASE;
13902                                                 ins->inst_basereg = vtaddr->inst_basereg;
13903                                                 ins->inst_offset = vtaddr->inst_offset;
13904                                         } else
13905                                                 NOT_IMPLEMENTED;
13906                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg] < 0) {
13907                                         /* gsharedvt arg passed by ref */
13908                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13909
13910                                         ins->opcode = OP_LOAD_MEMBASE;
13911                                         ins->inst_basereg = var->inst_basereg;
13912                                         ins->inst_offset = var->inst_offset;
13913                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg]) {
13914                                         MonoInst *load, *load2, *load3;
13915                                         int idx = gsharedvt_vreg_to_idx [var->dreg] - 1;
13916                                         int reg1, reg2, reg3;
13917                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13918                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13919
13920                                         /*
13921                                          * gsharedvt local.
13922                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13923                                          */
13924
13925                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13926
13927                                         g_assert (info_var);
13928                                         g_assert (locals_var);
13929
13930                                         /* Mark the instruction used to compute the locals var as used */
13931                                         cfg->gsharedvt_locals_var_ins = NULL;
13932
13933                                         /* Load the offset */
13934                                         if (info_var->opcode == OP_REGOFFSET) {
13935                                                 reg1 = alloc_ireg (cfg);
13936                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13937                                         } else if (info_var->opcode == OP_REGVAR) {
13938                                                 load = NULL;
13939                                                 reg1 = info_var->dreg;
13940                                         } else {
13941                                                 g_assert_not_reached ();
13942                                         }
13943                                         reg2 = alloc_ireg (cfg);
13944                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13945                                         /* Load the locals area address */
13946                                         reg3 = alloc_ireg (cfg);
13947                                         if (locals_var->opcode == OP_REGOFFSET) {
13948                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13949                                         } else if (locals_var->opcode == OP_REGVAR) {
13950                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13951                                         } else {
13952                                                 g_assert_not_reached ();
13953                                         }
13954                                         /* Compute the address */
13955                                         ins->opcode = OP_PADD;
13956                                         ins->sreg1 = reg3;
13957                                         ins->sreg2 = reg2;
13958
13959                                         mono_bblock_insert_before_ins (bb, ins, load3);
13960                                         mono_bblock_insert_before_ins (bb, load3, load2);
13961                                         if (load)
13962                                                 mono_bblock_insert_before_ins (bb, load2, load);
13963                                 } else {
13964                                         g_assert (var->opcode == OP_REGOFFSET);
13965
13966                                         ins->opcode = OP_ADD_IMM;
13967                                         ins->sreg1 = var->inst_basereg;
13968                                         ins->inst_imm = var->inst_offset;
13969                                 }
13970
13971                                 *need_local_opts = TRUE;
13972                                 spec = INS_INFO (ins->opcode);
13973                         }
13974
13975                         if (ins->opcode < MONO_CEE_LAST) {
13976                                 mono_print_ins (ins);
13977                                 g_assert_not_reached ();
13978                         }
13979
13980                         /*
13981                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13982                          * src register.
13983                          * FIXME:
13984                          */
13985                         if (MONO_IS_STORE_MEMBASE (ins)) {
13986                                 tmp_reg = ins->dreg;
13987                                 ins->dreg = ins->sreg2;
13988                                 ins->sreg2 = tmp_reg;
13989                                 store = TRUE;
13990
13991                                 spec2 [MONO_INST_DEST] = ' ';
13992                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13993                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13994                                 spec2 [MONO_INST_SRC3] = ' ';
13995                                 spec = spec2;
13996                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13997                                 g_assert_not_reached ();
13998                         else
13999                                 store = FALSE;
14000                         no_lvreg = FALSE;
14001
14002                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14003                                 printf ("\t %.3s %d", spec, ins->dreg);
14004                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14005                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14006                                         printf (" %d", sregs [srcindex]);
14007                                 printf ("\n");
14008                         }
14009
14010                         /***************/
14011                         /*    DREG     */
14012                         /***************/
14013                         regtype = spec [MONO_INST_DEST];
14014                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14015                         prev_dreg = -1;
14016
14017                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14018                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14019                                 MonoInst *store_ins;
14020                                 int store_opcode;
14021                                 MonoInst *def_ins = ins;
14022                                 int dreg = ins->dreg; /* The original vreg */
14023
14024                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14025
14026                                 if (var->opcode == OP_REGVAR) {
14027                                         ins->dreg = var->dreg;
14028                                 } 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)) {
14029                                         /*
14030                                          * Instead of emitting a load+store, use a _membase opcode.
14031                                          */
14032                                         g_assert (var->opcode == OP_REGOFFSET);
14033                                         if (ins->opcode == OP_MOVE) {
14034                                                 NULLIFY_INS (ins);
14035                                                 def_ins = NULL;
14036                                         } else {
14037                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14038                                                 ins->inst_basereg = var->inst_basereg;
14039                                                 ins->inst_offset = var->inst_offset;
14040                                                 ins->dreg = -1;
14041                                         }
14042                                         spec = INS_INFO (ins->opcode);
14043                                 } else {
14044                                         guint32 lvreg;
14045
14046                                         g_assert (var->opcode == OP_REGOFFSET);
14047
14048                                         prev_dreg = ins->dreg;
14049
14050                                         /* Invalidate any previous lvreg for this vreg */
14051                                         vreg_to_lvreg [ins->dreg] = 0;
14052
14053                                         lvreg = 0;
14054
14055                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14056                                                 regtype = 'l';
14057                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14058                                         }
14059
14060                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14061
14062 #if SIZEOF_REGISTER != 8
14063                                         if (regtype == 'l') {
14064                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
14065                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14066                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
14067                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14068                                                 def_ins = store_ins;
14069                                         }
14070                                         else
14071 #endif
14072                                         {
14073                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14074
14075                                                 /* Try to fuse the store into the instruction itself */
14076                                                 /* FIXME: Add more instructions */
14077                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14078                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14079                                                         ins->inst_imm = ins->inst_c0;
14080                                                         ins->inst_destbasereg = var->inst_basereg;
14081                                                         ins->inst_offset = var->inst_offset;
14082                                                         spec = INS_INFO (ins->opcode);
14083                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14084                                                         ins->opcode = store_opcode;
14085                                                         ins->inst_destbasereg = var->inst_basereg;
14086                                                         ins->inst_offset = var->inst_offset;
14087
14088                                                         no_lvreg = TRUE;
14089
14090                                                         tmp_reg = ins->dreg;
14091                                                         ins->dreg = ins->sreg2;
14092                                                         ins->sreg2 = tmp_reg;
14093                                                         store = TRUE;
14094
14095                                                         spec2 [MONO_INST_DEST] = ' ';
14096                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14097                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14098                                                         spec2 [MONO_INST_SRC3] = ' ';
14099                                                         spec = spec2;
14100                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14101                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14102                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14103                                                         ins->dreg = -1;
14104                                                         ins->inst_basereg = var->inst_basereg;
14105                                                         ins->inst_offset = var->inst_offset;
14106                                                         spec = INS_INFO (ins->opcode);
14107                                                 } else {
14108                                                         /* printf ("INS: "); mono_print_ins (ins); */
14109                                                         /* Create a store instruction */
14110                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14111
14112                                                         /* Insert it after the instruction */
14113                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14114
14115                                                         def_ins = store_ins;
14116
14117                                                         /*
14118                                                          * We can't assign ins->dreg to var->dreg here, since the
14119                                                          * sregs could use it. So set a flag, and do it after
14120                                                          * the sregs.
14121                                                          */
14122                                                         if ((!MONO_ARCH_USE_FPSTACK || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
14123                                                                 dest_has_lvreg = TRUE;
14124                                                 }
14125                                         }
14126                                 }
14127
14128                                 if (def_ins && !live_range_start [dreg]) {
14129                                         live_range_start [dreg] = def_ins;
14130                                         live_range_start_bb [dreg] = bb;
14131                                 }
14132
14133                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14134                                         MonoInst *tmp;
14135
14136                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14137                                         tmp->inst_c1 = dreg;
14138                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14139                                 }
14140                         }
14141
14142                         /************/
14143                         /*  SREGS   */
14144                         /************/
14145                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14146                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14147                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14148                                 sreg = sregs [srcindex];
14149
14150                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14151                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14152                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14153                                         MonoInst *use_ins = ins;
14154                                         MonoInst *load_ins;
14155                                         guint32 load_opcode;
14156
14157                                         if (var->opcode == OP_REGVAR) {
14158                                                 sregs [srcindex] = var->dreg;
14159                                                 //mono_inst_set_src_registers (ins, sregs);
14160                                                 live_range_end [sreg] = use_ins;
14161                                                 live_range_end_bb [sreg] = bb;
14162
14163                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14164                                                         MonoInst *tmp;
14165
14166                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14167                                                         /* var->dreg is a hreg */
14168                                                         tmp->inst_c1 = sreg;
14169                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14170                                                 }
14171
14172                                                 continue;
14173                                         }
14174
14175                                         g_assert (var->opcode == OP_REGOFFSET);
14176
14177                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14178
14179                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14180
14181                                         if (vreg_to_lvreg [sreg]) {
14182                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14183
14184                                                 /* The variable is already loaded to an lvreg */
14185                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14186                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14187                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14188                                                 //mono_inst_set_src_registers (ins, sregs);
14189                                                 continue;
14190                                         }
14191
14192                                         /* Try to fuse the load into the instruction */
14193                                         if ((srcindex == 0) && (op_to_op_src1_membase (load_opcode, ins->opcode) != -1)) {
14194                                                 ins->opcode = op_to_op_src1_membase (load_opcode, ins->opcode);
14195                                                 sregs [0] = var->inst_basereg;
14196                                                 //mono_inst_set_src_registers (ins, sregs);
14197                                                 ins->inst_offset = var->inst_offset;
14198                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (load_opcode, ins->opcode) != -1)) {
14199                                                 ins->opcode = op_to_op_src2_membase (load_opcode, ins->opcode);
14200                                                 sregs [1] = var->inst_basereg;
14201                                                 //mono_inst_set_src_registers (ins, sregs);
14202                                                 ins->inst_offset = var->inst_offset;
14203                                         } else {
14204                                                 if (MONO_IS_REAL_MOVE (ins)) {
14205                                                         ins->opcode = OP_NOP;
14206                                                         sreg = ins->dreg;
14207                                                 } else {
14208                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14209
14210                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14211
14212                                                         if ((!MONO_ARCH_USE_FPSTACK || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
14213                                                                 if (var->dreg == prev_dreg) {
14214                                                                         /*
14215                                                                          * sreg refers to the value loaded by the load
14216                                                                          * emitted below, but we need to use ins->dreg
14217                                                                          * since it refers to the store emitted earlier.
14218                                                                          */
14219                                                                         sreg = ins->dreg;
14220                                                                 }
14221                                                                 g_assert (sreg != -1);
14222                                                                 vreg_to_lvreg [var->dreg] = sreg;
14223                                                                 g_assert (lvregs_len < 1024);
14224                                                                 lvregs [lvregs_len ++] = var->dreg;
14225                                                         }
14226                                                 }
14227
14228                                                 sregs [srcindex] = sreg;
14229                                                 //mono_inst_set_src_registers (ins, sregs);
14230
14231 #if SIZEOF_REGISTER != 8
14232                                                 if (regtype == 'l') {
14233                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14234                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14235                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14236                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14237                                                         use_ins = load_ins;
14238                                                 }
14239                                                 else
14240 #endif
14241                                                 {
14242 #if SIZEOF_REGISTER == 4
14243                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14244 #endif
14245                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14246                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14247                                                         use_ins = load_ins;
14248                                                 }
14249                                         }
14250
14251                                         if (var->dreg < orig_next_vreg) {
14252                                                 live_range_end [var->dreg] = use_ins;
14253                                                 live_range_end_bb [var->dreg] = bb;
14254                                         }
14255
14256                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14257                                                 MonoInst *tmp;
14258
14259                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14260                                                 tmp->inst_c1 = var->dreg;
14261                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14262                                         }
14263                                 }
14264                         }
14265                         mono_inst_set_src_registers (ins, sregs);
14266
14267                         if (dest_has_lvreg) {
14268                                 g_assert (ins->dreg != -1);
14269                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14270                                 g_assert (lvregs_len < 1024);
14271                                 lvregs [lvregs_len ++] = prev_dreg;
14272                                 dest_has_lvreg = FALSE;
14273                         }
14274
14275                         if (store) {
14276                                 tmp_reg = ins->dreg;
14277                                 ins->dreg = ins->sreg2;
14278                                 ins->sreg2 = tmp_reg;
14279                         }
14280
14281                         if (MONO_IS_CALL (ins)) {
14282                                 /* Clear vreg_to_lvreg array */
14283                                 for (i = 0; i < lvregs_len; i++)
14284                                         vreg_to_lvreg [lvregs [i]] = 0;
14285                                 lvregs_len = 0;
14286                         } else if (ins->opcode == OP_NOP) {
14287                                 ins->dreg = -1;
14288                                 MONO_INST_NULLIFY_SREGS (ins);
14289                         }
14290
14291                         if (cfg->verbose_level > 2)
14292                                 mono_print_ins_index (1, ins);
14293                 }
14294
14295                 /* Extend the live range based on the liveness info */
14296                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14297                         for (i = 0; i < cfg->num_varinfo; i ++) {
14298                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14299
14300                                 if (vreg_is_volatile (cfg, vi->vreg))
14301                                         /* The liveness info is incomplete */
14302                                         continue;
14303
14304                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14305                                         /* Live from at least the first ins of this bb */
14306                                         live_range_start [vi->vreg] = bb->code;
14307                                         live_range_start_bb [vi->vreg] = bb;
14308                                 }
14309
14310                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14311                                         /* Live at least until the last ins of this bb */
14312                                         live_range_end [vi->vreg] = bb->last_ins;
14313                                         live_range_end_bb [vi->vreg] = bb;
14314                                 }
14315                         }
14316                 }
14317         }
14318
14319 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
14320         /*
14321          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14322          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14323          */
14324         if (cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14325                 for (i = 0; i < cfg->num_varinfo; ++i) {
14326                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14327                         MonoInst *ins;
14328
14329                         if (live_range_start [vreg]) {
14330                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14331                                 ins->inst_c0 = i;
14332                                 ins->inst_c1 = vreg;
14333                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14334                         }
14335                         if (live_range_end [vreg]) {
14336                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14337                                 ins->inst_c0 = i;
14338                                 ins->inst_c1 = vreg;
14339                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14340                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14341                                 else
14342                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14343                         }
14344                 }
14345         }
14346 #endif
14347
14348         if (cfg->gsharedvt_locals_var_ins) {
14349                 /* Nullify if unused */
14350                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14351                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14352         }
14353
14354         g_free (live_range_start);
14355         g_free (live_range_end);
14356         g_free (live_range_start_bb);
14357         g_free (live_range_end_bb);
14358 }
14359
14360 /**
14361  * FIXME:
14362  * - use 'iadd' instead of 'int_add'
14363  * - handling ovf opcodes: decompose in method_to_ir.
14364  * - unify iregs/fregs
14365  *   -> partly done, the missing parts are:
14366  *   - a more complete unification would involve unifying the hregs as well, so
14367  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14368  *     would no longer map to the machine hregs, so the code generators would need to
14369  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14370  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14371  *     fp/non-fp branches speeds it up by about 15%.
14372  * - use sext/zext opcodes instead of shifts
14373  * - add OP_ICALL
14374  * - get rid of TEMPLOADs if possible and use vregs instead
14375  * - clean up usage of OP_P/OP_ opcodes
14376  * - cleanup usage of DUMMY_USE
14377  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14378  *   stack
14379  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14380  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14381  * - make sure handle_stack_args () is called before the branch is emitted
14382  * - when the new IR is done, get rid of all unused stuff
14383  * - COMPARE/BEQ as separate instructions or unify them ?
14384  *   - keeping them separate allows specialized compare instructions like
14385  *     compare_imm, compare_membase
14386  *   - most back ends unify fp compare+branch, fp compare+ceq
14387  * - integrate mono_save_args into inline_method
14388  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14389  * - handle long shift opts on 32 bit platforms somehow: they require
14390  *   3 sregs (2 for arg1 and 1 for arg2)
14391  * - make byref a 'normal' type.
14392  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14393  *   variable if needed.
14394  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14395  *   like inline_method.
14396  * - remove inlining restrictions
14397  * - fix LNEG and enable cfold of INEG
14398  * - generalize x86 optimizations like ldelema as a peephole optimization
14399  * - add store_mem_imm for amd64
14400  * - optimize the loading of the interruption flag in the managed->native wrappers
14401  * - avoid special handling of OP_NOP in passes
14402  * - move code inserting instructions into one function/macro.
14403  * - try a coalescing phase after liveness analysis
14404  * - add float -> vreg conversion + local optimizations on !x86
14405  * - figure out how to handle decomposed branches during optimizations, ie.
14406  *   compare+branch, op_jump_table+op_br etc.
14407  * - promote RuntimeXHandles to vregs
14408  * - vtype cleanups:
14409  *   - add a NEW_VARLOADA_VREG macro
14410  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14411  *   accessing vtype fields.
14412  * - get rid of I8CONST on 64 bit platforms
14413  * - dealing with the increase in code size due to branches created during opcode
14414  *   decomposition:
14415  *   - use extended basic blocks
14416  *     - all parts of the JIT
14417  *     - handle_global_vregs () && local regalloc
14418  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14419  * - sources of increase in code size:
14420  *   - vtypes
14421  *   - long compares
14422  *   - isinst and castclass
14423  *   - lvregs not allocated to global registers even if used multiple times
14424  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14425  *   meaningful.
14426  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14427  * - add all micro optimizations from the old JIT
14428  * - put tree optimizations into the deadce pass
14429  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14430  *   specific function.
14431  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14432  *   fcompare + branchCC.
14433  * - create a helper function for allocating a stack slot, taking into account
14434  *   MONO_CFG_HAS_SPILLUP.
14435  * - merge r68207.
14436  * - merge the ia64 switch changes.
14437  * - optimize mono_regstate2_alloc_int/float.
14438  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14439  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14440  *   parts of the tree could be separated by other instructions, killing the tree
14441  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14442  *   instructions if the result of the load is used multiple times ?
14443  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14444  * - LAST MERGE: 108395.
14445  * - when returning vtypes in registers, generate IR and append it to the end of the
14446  *   last bb instead of doing it in the epilog.
14447  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14448  */
14449
14450 /*
14451
14452 NOTES
14453 -----
14454
14455 - When to decompose opcodes:
14456   - earlier: this makes some optimizations hard to implement, since the low level IR
14457   no longer contains the neccessary information. But it is easier to do.
14458   - later: harder to implement, enables more optimizations.
14459 - Branches inside bblocks:
14460   - created when decomposing complex opcodes.
14461     - branches to another bblock: harmless, but not tracked by the branch
14462       optimizations, so need to branch to a label at the start of the bblock.
14463     - branches to inside the same bblock: very problematic, trips up the local
14464       reg allocator. Can be fixed by spitting the current bblock, but that is a
14465       complex operation, since some local vregs can become global vregs etc.
14466 - Local/global vregs:
14467   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14468     local register allocator.
14469   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14470     structure, created by mono_create_var (). Assigned to hregs or the stack by
14471     the global register allocator.
14472 - When to do optimizations like alu->alu_imm:
14473   - earlier -> saves work later on since the IR will be smaller/simpler
14474   - later -> can work on more instructions
14475 - Handling of valuetypes:
14476   - When a vtype is pushed on the stack, a new temporary is created, an
14477     instruction computing its address (LDADDR) is emitted and pushed on
14478     the stack. Need to optimize cases when the vtype is used immediately as in
14479     argument passing, stloc etc.
14480 - Instead of the to_end stuff in the old JIT, simply call the function handling
14481   the values on the stack before emitting the last instruction of the bb.
14482 */
14483
14484 #endif /* DISABLE_JIT */