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
3627         *out_bblock = cfg->cbb;
3628
3629         context_used = mini_class_check_context_used (cfg, klass);
3630
3631         if (context_used) {
3632                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3633                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3634         } else {
3635                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3636
3637                 if (!vtable)
3638                         return;
3639                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3640         }
3641
3642 #ifdef MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT
3643         MonoInst *ins;
3644
3645         /*
3646          * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3647          * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3648          */
3649         /*
3650          * For LLVM, this requires that the code in the generic trampoline obtain the vtable argument according to
3651          * the normal calling convention of the platform.
3652          */
3653         MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3654         ins->sreg1 = vtable_arg->dreg;
3655         MONO_ADD_INS (cfg->cbb, ins);
3656 #else
3657         static int byte_offset = -1;
3658         static guint8 bitmask;
3659         int bits_reg, inited_reg;
3660         MonoBasicBlock *inited_bb;
3661         MonoInst *args [16];
3662
3663         if (byte_offset < 0)
3664                 mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3665
3666         bits_reg = alloc_ireg (cfg);
3667         inited_reg = alloc_ireg (cfg);
3668
3669         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3670         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3671
3672         NEW_BBLOCK (cfg, inited_bb);
3673
3674         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3675         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3676
3677         args [0] = vtable_arg;
3678         mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3679
3680         MONO_START_BB (cfg, inited_bb);
3681         *out_bblock = inited_bb;
3682 #endif
3683 }
3684
3685
3686 static void
3687 emit_class_init (MonoCompile *cfg, MonoClass *klass, MonoBasicBlock **out_bblock)
3688 {
3689         /* This could be used as a fallback if needed */
3690         //emit_generic_class_init (cfg, klass, out_bblock);
3691
3692         *out_bblock = cfg->cbb;
3693
3694         mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, klass, helper_sig_class_init_trampoline, NULL);
3695 }
3696
3697 static void
3698 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3699 {
3700         MonoInst *ins;
3701
3702         if (cfg->gen_seq_points && cfg->method == method) {
3703                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3704                 if (nonempty_stack)
3705                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3706                 MONO_ADD_INS (cfg->cbb, ins);
3707         }
3708 }
3709
3710 static void
3711 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check, MonoBasicBlock **out_bblock)
3712 {
3713         if (mini_get_debug_options ()->better_cast_details) {
3714                 int vtable_reg = alloc_preg (cfg);
3715                 int klass_reg = alloc_preg (cfg);
3716                 MonoBasicBlock *is_null_bb = NULL;
3717                 MonoInst *tls_get;
3718                 int to_klass_reg, context_used;
3719
3720                 if (null_check) {
3721                         NEW_BBLOCK (cfg, is_null_bb);
3722
3723                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3724                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3725                 }
3726
3727                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3728                 if (!tls_get) {
3729                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3730                         exit (1);
3731                 }
3732
3733                 MONO_ADD_INS (cfg->cbb, tls_get);
3734                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3735                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3736
3737                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3738
3739                 context_used = mini_class_check_context_used (cfg, klass);
3740                 if (context_used) {
3741                         MonoInst *class_ins;
3742
3743                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3744                         to_klass_reg = class_ins->dreg;
3745                 } else {
3746                         to_klass_reg = alloc_preg (cfg);
3747                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3748                 }
3749                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3750
3751                 if (null_check) {
3752                         MONO_START_BB (cfg, is_null_bb);
3753                         if (out_bblock)
3754                                 *out_bblock = cfg->cbb;
3755                 }
3756         }
3757 }
3758
3759 static void
3760 reset_cast_details (MonoCompile *cfg)
3761 {
3762         /* Reset the variables holding the cast details */
3763         if (mini_get_debug_options ()->better_cast_details) {
3764                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3765
3766                 MONO_ADD_INS (cfg->cbb, tls_get);
3767                 /* It is enough to reset the from field */
3768                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3769         }
3770 }
3771
3772 /*
3773  * On return the caller must check @array_class for load errors
3774  */
3775 static void
3776 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3777 {
3778         int vtable_reg = alloc_preg (cfg);
3779         int context_used;
3780
3781         context_used = mini_class_check_context_used (cfg, array_class);
3782
3783         save_cast_details (cfg, array_class, obj->dreg, FALSE, NULL);
3784
3785         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3786
3787         if (cfg->opt & MONO_OPT_SHARED) {
3788                 int class_reg = alloc_preg (cfg);
3789                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3790                 if (cfg->compile_aot) {
3791                         int klass_reg = alloc_preg (cfg);
3792                         MONO_EMIT_NEW_CLASSCONST (cfg, klass_reg, array_class);
3793                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, klass_reg);
3794                 } else {
3795                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, class_reg, array_class);
3796                 }
3797         } else if (context_used) {
3798                 MonoInst *vtable_ins;
3799
3800                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3801                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3802         } else {
3803                 if (cfg->compile_aot) {
3804                         int vt_reg;
3805                         MonoVTable *vtable;
3806
3807                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3808                                 return;
3809                         vt_reg = alloc_preg (cfg);
3810                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3811                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3812                 } else {
3813                         MonoVTable *vtable;
3814                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3815                                 return;
3816                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3817                 }
3818         }
3819
3820         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3821
3822         reset_cast_details (cfg);
3823 }
3824
3825 /**
3826  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3827  * generic code is generated.
3828  */
3829 static MonoInst*
3830 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3831 {
3832         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3833
3834         if (context_used) {
3835                 MonoInst *rgctx, *addr;
3836
3837                 /* FIXME: What if the class is shared?  We might not
3838                    have to get the address of the method from the
3839                    RGCTX. */
3840                 addr = emit_get_rgctx_method (cfg, context_used, method,
3841                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3842
3843                 rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3844
3845                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3846         } else {
3847                 gboolean pass_vtable, pass_mrgctx;
3848                 MonoInst *rgctx_arg = NULL;
3849
3850                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3851                 g_assert (!pass_mrgctx);
3852
3853                 if (pass_vtable) {
3854                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3855
3856                         g_assert (vtable);
3857                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3858                 }
3859
3860                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3861         }
3862 }
3863
3864 static MonoInst*
3865 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3866 {
3867         MonoInst *add;
3868         int obj_reg;
3869         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3870         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3871         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3872         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3873
3874         obj_reg = sp [0]->dreg;
3875         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3876         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3877
3878         /* FIXME: generics */
3879         g_assert (klass->rank == 0);
3880
3881         // Check rank == 0
3882         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3883         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3884
3885         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3886         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3887
3888         if (context_used) {
3889                 MonoInst *element_class;
3890
3891                 /* This assertion is from the unboxcast insn */
3892                 g_assert (klass->rank == 0);
3893
3894                 element_class = emit_get_rgctx_klass (cfg, context_used,
3895                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3896
3897                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3898                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3899         } else {
3900                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE, NULL);
3901                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3902                 reset_cast_details (cfg);
3903         }
3904
3905         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3906         MONO_ADD_INS (cfg->cbb, add);
3907         add->type = STACK_MP;
3908         add->klass = klass;
3909
3910         return add;
3911 }
3912
3913 static MonoInst*
3914 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj, MonoBasicBlock **out_cbb)
3915 {
3916         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3917         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3918         MonoInst *ins;
3919         int dreg, addr_reg;
3920
3921         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3922
3923         /* obj */
3924         args [0] = obj;
3925
3926         /* klass */
3927         args [1] = klass_inst;
3928
3929         /* CASTCLASS */
3930         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3931
3932         NEW_BBLOCK (cfg, is_ref_bb);
3933         NEW_BBLOCK (cfg, is_nullable_bb);
3934         NEW_BBLOCK (cfg, end_bb);
3935         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3936         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3937         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3938
3939         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
3940         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3941
3942         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3943         addr_reg = alloc_dreg (cfg, STACK_MP);
3944
3945         /* Non-ref case */
3946         /* UNBOX */
3947         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3948         MONO_ADD_INS (cfg->cbb, addr);
3949
3950         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3951
3952         /* Ref case */
3953         MONO_START_BB (cfg, is_ref_bb);
3954
3955         /* Save the ref to a temporary */
3956         dreg = alloc_ireg (cfg);
3957         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3958         addr->dreg = addr_reg;
3959         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3960         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3961
3962         /* Nullable case */
3963         MONO_START_BB (cfg, is_nullable_bb);
3964
3965         {
3966                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3967                 MonoInst *unbox_call;
3968                 MonoMethodSignature *unbox_sig;
3969
3970                 unbox_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3971                 unbox_sig->ret = &klass->byval_arg;
3972                 unbox_sig->param_count = 1;
3973                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3974                 unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3975
3976                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3977                 addr->dreg = addr_reg;
3978         }
3979
3980         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3981
3982         /* End */
3983         MONO_START_BB (cfg, end_bb);
3984
3985         /* LDOBJ */
3986         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3987
3988         *out_cbb = cfg->cbb;
3989
3990         return ins;
3991 }
3992
3993 /*
3994  * Returns NULL and set the cfg exception on error.
3995  */
3996 static MonoInst*
3997 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3998 {
3999         MonoInst *iargs [2];
4000         void *alloc_ftn;
4001
4002         if (context_used) {
4003                 MonoInst *data;
4004                 int rgctx_info;
4005                 MonoInst *iargs [2];
4006                 gboolean known_instance_size = !mini_is_gsharedvt_klass (cfg, klass);
4007
4008                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4009
4010                 if (cfg->opt & MONO_OPT_SHARED)
4011                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4012                 else
4013                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4014                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4015
4016                 if (cfg->opt & MONO_OPT_SHARED) {
4017                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4018                         iargs [1] = data;
4019                         alloc_ftn = mono_object_new;
4020                 } else {
4021                         iargs [0] = data;
4022                         alloc_ftn = mono_object_new_specific;
4023                 }
4024
4025                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4026                         if (known_instance_size) {
4027                                 int size = mono_class_instance_size (klass);
4028                                 if (size < sizeof (MonoObject))
4029                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4030
4031                                 EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4032                         }
4033                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4034                 }
4035
4036                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4037         }
4038
4039         if (cfg->opt & MONO_OPT_SHARED) {
4040                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4041                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4042
4043                 alloc_ftn = mono_object_new;
4044         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4045                 /* This happens often in argument checking code, eg. throw new FooException... */
4046                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4047                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4048                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4049         } else {
4050                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4051                 MonoMethod *managed_alloc = NULL;
4052                 gboolean pass_lw;
4053
4054                 if (!vtable) {
4055                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4056                         cfg->exception_ptr = klass;
4057                         return NULL;
4058                 }
4059
4060 #ifndef MONO_CROSS_COMPILE
4061                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4062 #endif
4063
4064                 if (managed_alloc) {
4065                         int size = mono_class_instance_size (klass);
4066                         if (size < sizeof (MonoObject))
4067                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4068
4069                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4070                         EMIT_NEW_ICONST (cfg, iargs [1], mono_gc_get_aligned_size_for_allocator (size));
4071                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4072                 }
4073                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4074                 if (pass_lw) {
4075                         guint32 lw = vtable->klass->instance_size;
4076                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4077                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4078                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4079                 }
4080                 else {
4081                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4082                 }
4083         }
4084
4085         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4086 }
4087
4088 /*
4089  * Returns NULL and set the cfg exception on error.
4090  */
4091 static MonoInst*
4092 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used, MonoBasicBlock **out_cbb)
4093 {
4094         MonoInst *alloc, *ins;
4095
4096         *out_cbb = cfg->cbb;
4097
4098         if (mono_class_is_nullable (klass)) {
4099                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4100
4101                 if (context_used) {
4102                         /* FIXME: What if the class is shared?  We might not
4103                            have to get the method address from the RGCTX. */
4104                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4105                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4106                         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4107
4108                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4109                 } else {
4110                         gboolean pass_vtable, pass_mrgctx;
4111                         MonoInst *rgctx_arg = NULL;
4112
4113                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4114                         g_assert (!pass_mrgctx);
4115
4116                         if (pass_vtable) {
4117                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4118
4119                                 g_assert (vtable);
4120                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4121                         }
4122
4123                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4124                 }
4125         }
4126
4127         if (mini_is_gsharedvt_klass (cfg, klass)) {
4128                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4129                 MonoInst *res, *is_ref, *src_var, *addr;
4130                 int dreg;
4131
4132                 dreg = alloc_ireg (cfg);
4133
4134                 NEW_BBLOCK (cfg, is_ref_bb);
4135                 NEW_BBLOCK (cfg, is_nullable_bb);
4136                 NEW_BBLOCK (cfg, end_bb);
4137                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4138                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
4139                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4140
4141                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
4142                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4143
4144                 /* Non-ref case */
4145                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4146                 if (!alloc)
4147                         return NULL;
4148                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4149                 ins->opcode = OP_STOREV_MEMBASE;
4150
4151                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4152                 res->type = STACK_OBJ;
4153                 res->klass = klass;
4154                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4155
4156                 /* Ref case */
4157                 MONO_START_BB (cfg, is_ref_bb);
4158
4159                 /* val is a vtype, so has to load the value manually */
4160                 src_var = get_vreg_to_inst (cfg, val->dreg);
4161                 if (!src_var)
4162                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4163                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4164                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4165                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4166
4167                 /* Nullable case */
4168                 MONO_START_BB (cfg, is_nullable_bb);
4169
4170                 {
4171                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4172                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4173                         MonoInst *box_call;
4174                         MonoMethodSignature *box_sig;
4175
4176                         /*
4177                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4178                          * construct that method at JIT time, so have to do things by hand.
4179                          */
4180                         box_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4181                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4182                         box_sig->param_count = 1;
4183                         box_sig->params [0] = &klass->byval_arg;
4184                         box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4185                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4186                         res->type = STACK_OBJ;
4187                         res->klass = klass;
4188                 }
4189
4190                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4191
4192                 MONO_START_BB (cfg, end_bb);
4193
4194                 *out_cbb = cfg->cbb;
4195
4196                 return res;
4197         } else {
4198                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4199                 if (!alloc)
4200                         return NULL;
4201
4202                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4203                 return alloc;
4204         }
4205 }
4206
4207 static gboolean
4208 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4209 {
4210         int i;
4211         MonoGenericContainer *container;
4212         MonoGenericInst *ginst;
4213
4214         if (klass->generic_class) {
4215                 container = klass->generic_class->container_class->generic_container;
4216                 ginst = klass->generic_class->context.class_inst;
4217         } else if (klass->generic_container && context_used) {
4218                 container = klass->generic_container;
4219                 ginst = container->context.class_inst;
4220         } else {
4221                 return FALSE;
4222         }
4223
4224         for (i = 0; i < container->type_argc; ++i) {
4225                 MonoType *type;
4226                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4227                         continue;
4228                 type = ginst->type_argv [i];
4229                 if (mini_type_is_reference (cfg, type))
4230                         return TRUE;
4231         }
4232         return FALSE;
4233 }
4234
4235 static GHashTable* direct_icall_type_hash;
4236
4237 static gboolean
4238 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4239 {
4240         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4241         if (!direct_icalls_enabled (cfg))
4242                 return FALSE;
4243
4244         /*
4245          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4246          * Whitelist a few icalls for now.
4247          */
4248         if (!direct_icall_type_hash) {
4249                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4250
4251                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4252                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4253                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4254                 mono_memory_barrier ();
4255                 direct_icall_type_hash = h;
4256         }
4257
4258         if (cmethod->klass == mono_defaults.math_class)
4259                 return TRUE;
4260         /* No locking needed */
4261         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4262                 return TRUE;
4263         return FALSE;
4264 }
4265
4266 #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)
4267
4268 static MonoInst*
4269 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args, MonoBasicBlock **out_bblock)
4270 {
4271         MonoMethod *mono_castclass;
4272         MonoInst *res;
4273
4274         mono_castclass = mono_marshal_get_castclass_with_cache ();
4275
4276         save_cast_details (cfg, klass, args [0]->dreg, TRUE, out_bblock);
4277         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4278         reset_cast_details (cfg);
4279         *out_bblock = cfg->cbb;
4280
4281         return res;
4282 }
4283
4284 static int
4285 get_castclass_cache_idx (MonoCompile *cfg)
4286 {
4287         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4288         cfg->castclass_cache_index ++;
4289         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4290 }
4291
4292 static MonoInst*
4293 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass, MonoBasicBlock **out_bblock)
4294 {
4295         MonoInst *args [3];
4296         int idx;
4297
4298         /* obj */
4299         args [0] = obj;
4300
4301         /* klass */
4302         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4303
4304         /* inline cache*/
4305         if (cfg->compile_aot) {
4306                 idx = get_castclass_cache_idx (cfg);
4307                 EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4308         } else {
4309                 EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
4310         }
4311
4312         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4313
4314         return emit_castclass_with_cache (cfg, klass, args, out_bblock);
4315 }
4316
4317 /*
4318  * Returns NULL and set the cfg exception on error.
4319  */
4320 static MonoInst*
4321 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, MonoBasicBlock **out_bb, int *inline_costs)
4322 {
4323         MonoBasicBlock *is_null_bb;
4324         int obj_reg = src->dreg;
4325         int vtable_reg = alloc_preg (cfg);
4326         int context_used;
4327         MonoInst *klass_inst = NULL, *res;
4328         MonoBasicBlock *bblock;
4329
4330         *out_bb = cfg->cbb;
4331
4332         context_used = mini_class_check_context_used (cfg, klass);
4333
4334         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4335                 res = emit_castclass_with_cache_nonshared (cfg, src, klass, &bblock);
4336                 (*inline_costs) += 2;
4337                 *out_bb = cfg->cbb;
4338                 return res;
4339         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4340                 MonoMethod *mono_castclass;
4341                 MonoInst *iargs [1];
4342                 int costs;
4343
4344                 mono_castclass = mono_marshal_get_castclass (klass);
4345                 iargs [0] = src;
4346
4347                 save_cast_details (cfg, klass, src->dreg, TRUE, &bblock);
4348                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4349                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
4350                 reset_cast_details (cfg);
4351                 CHECK_CFG_EXCEPTION;
4352                 g_assert (costs > 0);
4353
4354                 cfg->real_offset += 5;
4355
4356                 (*inline_costs) += costs;
4357
4358                 *out_bb = cfg->cbb;
4359                 return src;
4360         }
4361
4362         if (context_used) {
4363                 MonoInst *args [3];
4364
4365                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4366                         MonoInst *cache_ins;
4367
4368                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4369
4370                         /* obj */
4371                         args [0] = src;
4372
4373                         /* klass - it's the second element of the cache entry*/
4374                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4375
4376                         /* cache */
4377                         args [2] = cache_ins;
4378
4379                         return emit_castclass_with_cache (cfg, klass, args, out_bb);
4380                 }
4381
4382                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4383         }
4384
4385         NEW_BBLOCK (cfg, is_null_bb);
4386
4387         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4388         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4389
4390         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4391
4392         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4393                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4394                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4395         } else {
4396                 int klass_reg = alloc_preg (cfg);
4397
4398                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4399
4400                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4401                         /* the remoting code is broken, access the class for now */
4402                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4403                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4404                                 if (!vt) {
4405                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4406                                         cfg->exception_ptr = klass;
4407                                         return NULL;
4408                                 }
4409                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4410                         } else {
4411                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4412                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4413                         }
4414                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4415                 } else {
4416                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4417                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4418                 }
4419         }
4420
4421         MONO_START_BB (cfg, is_null_bb);
4422
4423         reset_cast_details (cfg);
4424
4425         *out_bb = cfg->cbb;
4426
4427         return src;
4428
4429 exception_exit:
4430         return NULL;
4431 }
4432
4433 /*
4434  * Returns NULL and set the cfg exception on error.
4435  */
4436 static MonoInst*
4437 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4438 {
4439         MonoInst *ins;
4440         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4441         int obj_reg = src->dreg;
4442         int vtable_reg = alloc_preg (cfg);
4443         int res_reg = alloc_ireg_ref (cfg);
4444         MonoInst *klass_inst = NULL;
4445
4446         if (context_used) {
4447                 MonoInst *args [3];
4448
4449                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4450                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4451                         MonoInst *cache_ins;
4452
4453                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4454
4455                         /* obj */
4456                         args [0] = src;
4457
4458                         /* klass - it's the second element of the cache entry*/
4459                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4460
4461                         /* cache */
4462                         args [2] = cache_ins;
4463
4464                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4465                 }
4466
4467                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4468         }
4469
4470         NEW_BBLOCK (cfg, is_null_bb);
4471         NEW_BBLOCK (cfg, false_bb);
4472         NEW_BBLOCK (cfg, end_bb);
4473
4474         /* Do the assignment at the beginning, so the other assignment can be if converted */
4475         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4476         ins->type = STACK_OBJ;
4477         ins->klass = klass;
4478
4479         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4480         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4481
4482         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4483
4484         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4485                 g_assert (!context_used);
4486                 /* the is_null_bb target simply copies the input register to the output */
4487                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4488         } else {
4489                 int klass_reg = alloc_preg (cfg);
4490
4491                 if (klass->rank) {
4492                         int rank_reg = alloc_preg (cfg);
4493                         int eclass_reg = alloc_preg (cfg);
4494
4495                         g_assert (!context_used);
4496                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4497                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4498                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4499                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4500                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4501                         if (klass->cast_class == mono_defaults.object_class) {
4502                                 int parent_reg = alloc_preg (cfg);
4503                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4504                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4505                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4506                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4507                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4508                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4509                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4510                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4511                         } else if (klass->cast_class == mono_defaults.enum_class) {
4512                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4513                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4514                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4515                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4516                         } else {
4517                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4518                                         /* Check that the object is a vector too */
4519                                         int bounds_reg = alloc_preg (cfg);
4520                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4521                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4522                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4523                                 }
4524
4525                                 /* the is_null_bb target simply copies the input register to the output */
4526                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4527                         }
4528                 } else if (mono_class_is_nullable (klass)) {
4529                         g_assert (!context_used);
4530                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4531                         /* the is_null_bb target simply copies the input register to the output */
4532                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4533                 } else {
4534                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4535                                 g_assert (!context_used);
4536                                 /* the remoting code is broken, access the class for now */
4537                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4538                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4539                                         if (!vt) {
4540                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4541                                                 cfg->exception_ptr = klass;
4542                                                 return NULL;
4543                                         }
4544                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4545                                 } else {
4546                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4547                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4548                                 }
4549                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4550                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4551                         } else {
4552                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4553                                 /* the is_null_bb target simply copies the input register to the output */
4554                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4555                         }
4556                 }
4557         }
4558
4559         MONO_START_BB (cfg, false_bb);
4560
4561         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4562         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4563
4564         MONO_START_BB (cfg, is_null_bb);
4565
4566         MONO_START_BB (cfg, end_bb);
4567
4568         return ins;
4569 }
4570
4571 static MonoInst*
4572 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4573 {
4574         /* This opcode takes as input an object reference and a class, and returns:
4575         0) if the object is an instance of the class,
4576         1) if the object is not instance of the class,
4577         2) if the object is a proxy whose type cannot be determined */
4578
4579         MonoInst *ins;
4580 #ifndef DISABLE_REMOTING
4581         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4582 #else
4583         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4584 #endif
4585         int obj_reg = src->dreg;
4586         int dreg = alloc_ireg (cfg);
4587         int tmp_reg;
4588 #ifndef DISABLE_REMOTING
4589         int klass_reg = alloc_preg (cfg);
4590 #endif
4591
4592         NEW_BBLOCK (cfg, true_bb);
4593         NEW_BBLOCK (cfg, false_bb);
4594         NEW_BBLOCK (cfg, end_bb);
4595 #ifndef DISABLE_REMOTING
4596         NEW_BBLOCK (cfg, false2_bb);
4597         NEW_BBLOCK (cfg, no_proxy_bb);
4598 #endif
4599
4600         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4601         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4602
4603         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4604 #ifndef DISABLE_REMOTING
4605                 NEW_BBLOCK (cfg, interface_fail_bb);
4606 #endif
4607
4608                 tmp_reg = alloc_preg (cfg);
4609                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4610 #ifndef DISABLE_REMOTING
4611                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4612                 MONO_START_BB (cfg, interface_fail_bb);
4613                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4614
4615                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4616
4617                 tmp_reg = alloc_preg (cfg);
4618                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4619                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4620                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4621 #else
4622                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4623 #endif
4624         } else {
4625 #ifndef DISABLE_REMOTING
4626                 tmp_reg = alloc_preg (cfg);
4627                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4628                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4629
4630                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4631                 tmp_reg = alloc_preg (cfg);
4632                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4633                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4634
4635                 tmp_reg = alloc_preg (cfg);
4636                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4637                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4638                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4639
4640                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4641                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4642
4643                 MONO_START_BB (cfg, no_proxy_bb);
4644
4645                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4646 #else
4647                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4648 #endif
4649         }
4650
4651         MONO_START_BB (cfg, false_bb);
4652
4653         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4654         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4655
4656 #ifndef DISABLE_REMOTING
4657         MONO_START_BB (cfg, false2_bb);
4658
4659         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4660         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4661 #endif
4662
4663         MONO_START_BB (cfg, true_bb);
4664
4665         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4666
4667         MONO_START_BB (cfg, end_bb);
4668
4669         /* FIXME: */
4670         MONO_INST_NEW (cfg, ins, OP_ICONST);
4671         ins->dreg = dreg;
4672         ins->type = STACK_I4;
4673
4674         return ins;
4675 }
4676
4677 static MonoInst*
4678 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4679 {
4680         /* This opcode takes as input an object reference and a class, and returns:
4681         0) if the object is an instance of the class,
4682         1) if the object is a proxy whose type cannot be determined
4683         an InvalidCastException exception is thrown otherwhise*/
4684
4685         MonoInst *ins;
4686 #ifndef DISABLE_REMOTING
4687         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4688 #else
4689         MonoBasicBlock *ok_result_bb;
4690 #endif
4691         int obj_reg = src->dreg;
4692         int dreg = alloc_ireg (cfg);
4693         int tmp_reg = alloc_preg (cfg);
4694
4695 #ifndef DISABLE_REMOTING
4696         int klass_reg = alloc_preg (cfg);
4697         NEW_BBLOCK (cfg, end_bb);
4698 #endif
4699
4700         NEW_BBLOCK (cfg, ok_result_bb);
4701
4702         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4703         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4704
4705         save_cast_details (cfg, klass, obj_reg, FALSE, NULL);
4706
4707         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4708 #ifndef DISABLE_REMOTING
4709                 NEW_BBLOCK (cfg, interface_fail_bb);
4710
4711                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4712                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4713                 MONO_START_BB (cfg, interface_fail_bb);
4714                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4715
4716                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4717
4718                 tmp_reg = alloc_preg (cfg);
4719                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4720                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4721                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4722
4723                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4724                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4725 #else
4726                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4727                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4728                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4729 #endif
4730         } else {
4731 #ifndef DISABLE_REMOTING
4732                 NEW_BBLOCK (cfg, no_proxy_bb);
4733
4734                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4735                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4736                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4737
4738                 tmp_reg = alloc_preg (cfg);
4739                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4740                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4741
4742                 tmp_reg = alloc_preg (cfg);
4743                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4744                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4745                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4746
4747                 NEW_BBLOCK (cfg, fail_1_bb);
4748
4749                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4750
4751                 MONO_START_BB (cfg, fail_1_bb);
4752
4753                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4754                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4755
4756                 MONO_START_BB (cfg, no_proxy_bb);
4757
4758                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4759 #else
4760                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4761 #endif
4762         }
4763
4764         MONO_START_BB (cfg, ok_result_bb);
4765
4766         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4767
4768 #ifndef DISABLE_REMOTING
4769         MONO_START_BB (cfg, end_bb);
4770 #endif
4771
4772         /* FIXME: */
4773         MONO_INST_NEW (cfg, ins, OP_ICONST);
4774         ins->dreg = dreg;
4775         ins->type = STACK_I4;
4776
4777         return ins;
4778 }
4779
4780 static G_GNUC_UNUSED MonoInst*
4781 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4782 {
4783         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4784         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4785         gboolean is_i4;
4786
4787         switch (enum_type->type) {
4788         case MONO_TYPE_I8:
4789         case MONO_TYPE_U8:
4790 #if SIZEOF_REGISTER == 8
4791         case MONO_TYPE_I:
4792         case MONO_TYPE_U:
4793 #endif
4794                 is_i4 = FALSE;
4795                 break;
4796         default:
4797                 is_i4 = TRUE;
4798                 break;
4799         }
4800
4801         {
4802                 MonoInst *load, *and, *cmp, *ceq;
4803                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4804                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4805                 int dest_reg = alloc_ireg (cfg);
4806
4807                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4808                 EMIT_NEW_BIALU (cfg, and, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4809                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4810                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4811
4812                 ceq->type = STACK_I4;
4813
4814                 if (!is_i4) {
4815                         load = mono_decompose_opcode (cfg, load, NULL);
4816                         and = mono_decompose_opcode (cfg, and, NULL);
4817                         cmp = mono_decompose_opcode (cfg, cmp, NULL);
4818                         ceq = mono_decompose_opcode (cfg, ceq, NULL);
4819                 }
4820
4821                 return ceq;
4822         }
4823 }
4824
4825 /*
4826  * Returns NULL and set the cfg exception on error.
4827  */
4828 static G_GNUC_UNUSED MonoInst*
4829 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual)
4830 {
4831         MonoInst *ptr;
4832         int dreg;
4833         gpointer trampoline;
4834         MonoInst *obj, *method_ins, *tramp_ins;
4835         MonoDomain *domain;
4836         guint8 **code_slot;
4837
4838         if (virtual) {
4839                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4840                 g_assert (invoke);
4841
4842                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4843                         return NULL;
4844         }
4845
4846         obj = handle_alloc (cfg, klass, FALSE, 0);
4847         if (!obj)
4848                 return NULL;
4849
4850         /* Inline the contents of mono_delegate_ctor */
4851
4852         /* Set target field */
4853         /* Optimize away setting of NULL target */
4854         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
4855                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4856                 if (cfg->gen_write_barriers) {
4857                         dreg = alloc_preg (cfg);
4858                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4859                         emit_write_barrier (cfg, ptr, target);
4860                 }
4861         }
4862
4863         /* Set method field */
4864         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4865         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4866
4867         /*
4868          * To avoid looking up the compiled code belonging to the target method
4869          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4870          * store it, and we fill it after the method has been compiled.
4871          */
4872         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4873                 MonoInst *code_slot_ins;
4874
4875                 if (context_used) {
4876                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4877                 } else {
4878                         domain = mono_domain_get ();
4879                         mono_domain_lock (domain);
4880                         if (!domain_jit_info (domain)->method_code_hash)
4881                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4882                         code_slot = g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4883                         if (!code_slot) {
4884                                 code_slot = mono_domain_alloc0 (domain, sizeof (gpointer));
4885                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4886                         }
4887                         mono_domain_unlock (domain);
4888
4889                         if (cfg->compile_aot)
4890                                 EMIT_NEW_AOTCONST (cfg, code_slot_ins, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4891                         else
4892                                 EMIT_NEW_PCONST (cfg, code_slot_ins, code_slot);
4893                 }
4894                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4895         }
4896
4897         if (cfg->compile_aot) {
4898                 MonoDelegateClassMethodPair *del_tramp;
4899
4900                 del_tramp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4901                 del_tramp->klass = klass;
4902                 del_tramp->method = context_used ? NULL : method;
4903                 del_tramp->virtual = virtual;
4904                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4905         } else {
4906                 if (virtual)
4907                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4908                 else
4909                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4910                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4911         }
4912
4913         /* Set invoke_impl field */
4914         if (virtual) {
4915                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4916         } else {
4917                 dreg = alloc_preg (cfg);
4918                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4919                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4920
4921                 dreg = alloc_preg (cfg);
4922                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4923                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4924         }
4925
4926         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4927
4928         return obj;
4929 }
4930
4931 static MonoInst*
4932 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4933 {
4934         MonoJitICallInfo *info;
4935
4936         /* Need to register the icall so it gets an icall wrapper */
4937         info = mono_get_array_new_va_icall (rank);
4938
4939         cfg->flags |= MONO_CFG_HAS_VARARGS;
4940
4941         /* mono_array_new_va () needs a vararg calling convention */
4942         cfg->disable_llvm = TRUE;
4943
4944         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4945         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4946 }
4947
4948 /*
4949  * handle_constrained_gsharedvt_call:
4950  *
4951  *   Handle constrained calls where the receiver is a gsharedvt type.
4952  * Return the instruction representing the call. Set the cfg exception on failure.
4953  */
4954 static MonoInst*
4955 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4956                                                                    gboolean *ref_emit_widen, MonoBasicBlock **ref_bblock)
4957 {
4958         MonoInst *ins = NULL;
4959         MonoBasicBlock *bblock = *ref_bblock;
4960         gboolean emit_widen = *ref_emit_widen;
4961
4962         /*
4963          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4964          * 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
4965          * pack the arguments into an array, and do the rest of the work in in an icall.
4966          */
4967         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4968                 (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)) &&
4969                 (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]))))) {
4970                 MonoInst *args [16];
4971
4972                 /*
4973                  * This case handles calls to
4974                  * - object:ToString()/Equals()/GetHashCode(),
4975                  * - System.IComparable<T>:CompareTo()
4976                  * - System.IEquatable<T>:Equals ()
4977                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4978                  */
4979
4980                 args [0] = sp [0];
4981                 if (mono_method_check_context_used (cmethod))
4982                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4983                 else
4984                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4985                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4986
4987                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4988                 if (fsig->hasthis && fsig->param_count) {
4989                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4990                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4991                         ins->dreg = alloc_preg (cfg);
4992                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4993                         MONO_ADD_INS (cfg->cbb, ins);
4994                         args [4] = ins;
4995
4996                         if (mini_is_gsharedvt_type (cfg, fsig->params [0])) {
4997                                 int addr_reg;
4998
4999                                 args [3] = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5000
5001                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5002                                 addr_reg = ins->dreg;
5003                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5004                         } else {
5005                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5006                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5007                         }
5008                 } else {
5009                         EMIT_NEW_ICONST (cfg, args [3], 0);
5010                         EMIT_NEW_ICONST (cfg, args [4], 0);
5011                 }
5012                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5013                 emit_widen = FALSE;
5014
5015                 if (mini_is_gsharedvt_type (cfg, fsig->ret)) {
5016                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins, &bblock);
5017                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5018                         MonoInst *add;
5019
5020                         /* Unbox */
5021                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5022                         MONO_ADD_INS (cfg->cbb, add);
5023                         /* Load value */
5024                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5025                         MONO_ADD_INS (cfg->cbb, ins);
5026                         /* ins represents the call result */
5027                 }
5028         } else {
5029                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5030         }
5031
5032         *ref_emit_widen = emit_widen;
5033         *ref_bblock = bblock;
5034
5035         return ins;
5036
5037  exception_exit:
5038         return NULL;
5039 }
5040
5041 static void
5042 mono_emit_load_got_addr (MonoCompile *cfg)
5043 {
5044         MonoInst *getaddr, *dummy_use;
5045
5046         if (!cfg->got_var || cfg->got_var_allocated)
5047                 return;
5048
5049         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5050         getaddr->cil_code = cfg->header->code;
5051         getaddr->dreg = cfg->got_var->dreg;
5052
5053         /* Add it to the start of the first bblock */
5054         if (cfg->bb_entry->code) {
5055                 getaddr->next = cfg->bb_entry->code;
5056                 cfg->bb_entry->code = getaddr;
5057         }
5058         else
5059                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5060
5061         cfg->got_var_allocated = TRUE;
5062
5063         /*
5064          * Add a dummy use to keep the got_var alive, since real uses might
5065          * only be generated by the back ends.
5066          * Add it to end_bblock, so the variable's lifetime covers the whole
5067          * method.
5068          * It would be better to make the usage of the got var explicit in all
5069          * cases when the backend needs it (i.e. calls, throw etc.), so this
5070          * wouldn't be needed.
5071          */
5072         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5073         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5074 }
5075
5076 static int inline_limit;
5077 static gboolean inline_limit_inited;
5078
5079 static gboolean
5080 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5081 {
5082         MonoMethodHeaderSummary header;
5083         MonoVTable *vtable;
5084 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5085         MonoMethodSignature *sig = mono_method_signature (method);
5086         int i;
5087 #endif
5088
5089         if (cfg->disable_inline)
5090                 return FALSE;
5091         if (cfg->generic_sharing_context)
5092                 return FALSE;
5093
5094         if (cfg->inline_depth > 10)
5095                 return FALSE;
5096
5097 #ifdef MONO_ARCH_HAVE_LMF_OPS
5098         if (((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
5099                  (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) &&
5100             !MONO_TYPE_ISSTRUCT (signature->ret) && !mini_class_is_system_array (method->klass))
5101                 return TRUE;
5102 #endif
5103
5104
5105         if (!mono_method_get_header_summary (method, &header))
5106                 return FALSE;
5107
5108         /*runtime, icall and pinvoke are checked by summary call*/
5109         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5110             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5111             (mono_class_is_marshalbyref (method->klass)) ||
5112             header.has_clauses)
5113                 return FALSE;
5114
5115         /* also consider num_locals? */
5116         /* Do the size check early to avoid creating vtables */
5117         if (!inline_limit_inited) {
5118                 if (g_getenv ("MONO_INLINELIMIT"))
5119                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5120                 else
5121                         inline_limit = INLINE_LENGTH_LIMIT;
5122                 inline_limit_inited = TRUE;
5123         }
5124         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5125                 return FALSE;
5126
5127         /*
5128          * if we can initialize the class of the method right away, we do,
5129          * otherwise we don't allow inlining if the class needs initialization,
5130          * since it would mean inserting a call to mono_runtime_class_init()
5131          * inside the inlined code
5132          */
5133         if (!(cfg->opt & MONO_OPT_SHARED)) {
5134                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5135                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5136                         vtable = mono_class_vtable (cfg->domain, method->klass);
5137                         if (!vtable)
5138                                 return FALSE;
5139                         if (!cfg->compile_aot)
5140                                 mono_runtime_class_init (vtable);
5141                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5142                         if (cfg->run_cctors && method->klass->has_cctor) {
5143                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5144                                 if (!method->klass->runtime_info)
5145                                         /* No vtable created yet */
5146                                         return FALSE;
5147                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5148                                 if (!vtable)
5149                                         return FALSE;
5150                                 /* This makes so that inline cannot trigger */
5151                                 /* .cctors: too many apps depend on them */
5152                                 /* running with a specific order... */
5153                                 if (! vtable->initialized)
5154                                         return FALSE;
5155                                 mono_runtime_class_init (vtable);
5156                         }
5157                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5158                         if (!method->klass->runtime_info)
5159                                 /* No vtable created yet */
5160                                 return FALSE;
5161                         vtable = mono_class_vtable (cfg->domain, method->klass);
5162                         if (!vtable)
5163                                 return FALSE;
5164                         if (!vtable->initialized)
5165                                 return FALSE;
5166                 }
5167         } else {
5168                 /*
5169                  * If we're compiling for shared code
5170                  * the cctor will need to be run at aot method load time, for example,
5171                  * or at the end of the compilation of the inlining method.
5172                  */
5173                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5174                         return FALSE;
5175         }
5176
5177 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5178         if (mono_arch_is_soft_float ()) {
5179                 /* FIXME: */
5180                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5181                         return FALSE;
5182                 for (i = 0; i < sig->param_count; ++i)
5183                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5184                                 return FALSE;
5185         }
5186 #endif
5187
5188         if (g_list_find (cfg->dont_inline, method))
5189                 return FALSE;
5190
5191         return TRUE;
5192 }
5193
5194 static gboolean
5195 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5196 {
5197         if (!cfg->compile_aot) {
5198                 g_assert (vtable);
5199                 if (vtable->initialized)
5200                         return FALSE;
5201         }
5202
5203         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5204                 if (cfg->method == method)
5205                         return FALSE;
5206         }
5207
5208         if (!mono_class_needs_cctor_run (klass, method))
5209                 return FALSE;
5210
5211         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5212                 /* The initialization is already done before the method is called */
5213                 return FALSE;
5214
5215         return TRUE;
5216 }
5217
5218 static MonoInst*
5219 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5220 {
5221         MonoInst *ins;
5222         guint32 size;
5223         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5224         int context_used;
5225
5226         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5227                 size = -1;
5228         } else {
5229                 mono_class_init (klass);
5230                 size = mono_class_array_element_size (klass);
5231         }
5232
5233         mult_reg = alloc_preg (cfg);
5234         array_reg = arr->dreg;
5235         index_reg = index->dreg;
5236
5237 #if SIZEOF_REGISTER == 8
5238         /* The array reg is 64 bits but the index reg is only 32 */
5239         if (COMPILE_LLVM (cfg)) {
5240                 /* Not needed */
5241                 index2_reg = index_reg;
5242         } else {
5243                 index2_reg = alloc_preg (cfg);
5244                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5245         }
5246 #else
5247         if (index->type == STACK_I8) {
5248                 index2_reg = alloc_preg (cfg);
5249                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5250         } else {
5251                 index2_reg = index_reg;
5252         }
5253 #endif
5254
5255         if (bcheck)
5256                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5257
5258 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5259         if (size == 1 || size == 2 || size == 4 || size == 8) {
5260                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5261
5262                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5263                 ins->klass = mono_class_get_element_class (klass);
5264                 ins->type = STACK_MP;
5265
5266                 return ins;
5267         }
5268 #endif
5269
5270         add_reg = alloc_ireg_mp (cfg);
5271
5272         if (size == -1) {
5273                 MonoInst *rgctx_ins;
5274
5275                 /* gsharedvt */
5276                 g_assert (cfg->generic_sharing_context);
5277                 context_used = mini_class_check_context_used (cfg, klass);
5278                 g_assert (context_used);
5279                 rgctx_ins = emit_get_gsharedvt_info (cfg, &klass->byval_arg, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5280                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5281         } else {
5282                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5283         }
5284         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5285         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5286         ins->klass = mono_class_get_element_class (klass);
5287         ins->type = STACK_MP;
5288         MONO_ADD_INS (cfg->cbb, ins);
5289
5290         return ins;
5291 }
5292
5293 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5294 static MonoInst*
5295 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5296 {
5297         int bounds_reg = alloc_preg (cfg);
5298         int add_reg = alloc_ireg_mp (cfg);
5299         int mult_reg = alloc_preg (cfg);
5300         int mult2_reg = alloc_preg (cfg);
5301         int low1_reg = alloc_preg (cfg);
5302         int low2_reg = alloc_preg (cfg);
5303         int high1_reg = alloc_preg (cfg);
5304         int high2_reg = alloc_preg (cfg);
5305         int realidx1_reg = alloc_preg (cfg);
5306         int realidx2_reg = alloc_preg (cfg);
5307         int sum_reg = alloc_preg (cfg);
5308         int index1, index2, tmpreg;
5309         MonoInst *ins;
5310         guint32 size;
5311
5312         mono_class_init (klass);
5313         size = mono_class_array_element_size (klass);
5314
5315         index1 = index_ins1->dreg;
5316         index2 = index_ins2->dreg;
5317
5318 #if SIZEOF_REGISTER == 8
5319         /* The array reg is 64 bits but the index reg is only 32 */
5320         if (COMPILE_LLVM (cfg)) {
5321                 /* Not needed */
5322         } else {
5323                 tmpreg = alloc_preg (cfg);
5324                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5325                 index1 = tmpreg;
5326                 tmpreg = alloc_preg (cfg);
5327                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5328                 index2 = tmpreg;
5329         }
5330 #else
5331         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5332         tmpreg = -1;
5333 #endif
5334
5335         /* range checking */
5336         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5337                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5338
5339         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5340                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5341         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5342         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5343                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5344         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5345         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5346
5347         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5348                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5349         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5350         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5351                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5352         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5353         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5354
5355         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5356         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5357         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5358         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5359         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5360
5361         ins->type = STACK_MP;
5362         ins->klass = klass;
5363         MONO_ADD_INS (cfg->cbb, ins);
5364
5365         return ins;
5366 }
5367 #endif
5368
5369 static MonoInst*
5370 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5371 {
5372         int rank;
5373         MonoInst *addr;
5374         MonoMethod *addr_method;
5375         int element_size;
5376         MonoClass *eclass = cmethod->klass->element_class;
5377
5378         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5379
5380         if (rank == 1)
5381                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5382
5383 #ifndef MONO_ARCH_EMULATE_MUL_DIV
5384         /* emit_ldelema_2 depends on OP_LMUL */
5385         if (rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (cfg, eclass)) {
5386                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5387         }
5388 #endif
5389
5390         if (mini_is_gsharedvt_variable_klass (cfg, eclass))
5391                 element_size = 0;
5392         else
5393                 element_size = mono_class_array_element_size (eclass);
5394         addr_method = mono_marshal_get_array_address (rank, element_size);
5395         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5396
5397         return addr;
5398 }
5399
5400 static MonoBreakPolicy
5401 always_insert_breakpoint (MonoMethod *method)
5402 {
5403         return MONO_BREAK_POLICY_ALWAYS;
5404 }
5405
5406 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5407
5408 /**
5409  * mono_set_break_policy:
5410  * policy_callback: the new callback function
5411  *
5412  * Allow embedders to decide wherther to actually obey breakpoint instructions
5413  * (both break IL instructions and Debugger.Break () method calls), for example
5414  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5415  * untrusted or semi-trusted code.
5416  *
5417  * @policy_callback will be called every time a break point instruction needs to
5418  * be inserted with the method argument being the method that calls Debugger.Break()
5419  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5420  * if it wants the breakpoint to not be effective in the given method.
5421  * #MONO_BREAK_POLICY_ALWAYS is the default.
5422  */
5423 void
5424 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5425 {
5426         if (policy_callback)
5427                 break_policy_func = policy_callback;
5428         else
5429                 break_policy_func = always_insert_breakpoint;
5430 }
5431
5432 static gboolean
5433 should_insert_brekpoint (MonoMethod *method) {
5434         switch (break_policy_func (method)) {
5435         case MONO_BREAK_POLICY_ALWAYS:
5436                 return TRUE;
5437         case MONO_BREAK_POLICY_NEVER:
5438                 return FALSE;
5439         case MONO_BREAK_POLICY_ON_DBG:
5440                 g_warning ("mdb no longer supported");
5441                 return FALSE;
5442         default:
5443                 g_warning ("Incorrect value returned from break policy callback");
5444                 return FALSE;
5445         }
5446 }
5447
5448 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5449 static MonoInst*
5450 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5451 {
5452         MonoInst *addr, *store, *load;
5453         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5454
5455         /* the bounds check is already done by the callers */
5456         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5457         if (is_set) {
5458                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5459                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5460                 if (mini_type_is_reference (cfg, fsig->params [2]))
5461                         emit_write_barrier (cfg, addr, load);
5462         } else {
5463                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5464                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5465         }
5466         return store;
5467 }
5468
5469
5470 static gboolean
5471 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5472 {
5473         return mini_type_is_reference (cfg, &klass->byval_arg);
5474 }
5475
5476 static MonoInst*
5477 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5478 {
5479         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5480                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5481                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5482                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5483                 MonoInst *iargs [3];
5484
5485                 if (!helper->slot)
5486                         mono_class_setup_vtable (obj_array);
5487                 g_assert (helper->slot);
5488
5489                 if (sp [0]->type != STACK_OBJ)
5490                         return NULL;
5491                 if (sp [2]->type != STACK_OBJ)
5492                         return NULL;
5493
5494                 iargs [2] = sp [2];
5495                 iargs [1] = sp [1];
5496                 iargs [0] = sp [0];
5497
5498                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5499         } else {
5500                 MonoInst *ins;
5501
5502                 if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
5503                         MonoInst *addr;
5504
5505                         // FIXME-VT: OP_ICONST optimization
5506                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5507                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5508                         ins->opcode = OP_STOREV_MEMBASE;
5509                 } else if (sp [1]->opcode == OP_ICONST) {
5510                         int array_reg = sp [0]->dreg;
5511                         int index_reg = sp [1]->dreg;
5512                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5513
5514                         if (safety_checks)
5515                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5516                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5517                 } else {
5518                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5519                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5520                         if (generic_class_is_reference_type (cfg, klass))
5521                                 emit_write_barrier (cfg, addr, sp [2]);
5522                 }
5523                 return ins;
5524         }
5525 }
5526
5527 static MonoInst*
5528 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5529 {
5530         MonoClass *eklass;
5531
5532         if (is_set)
5533                 eklass = mono_class_from_mono_type (fsig->params [2]);
5534         else
5535                 eklass = mono_class_from_mono_type (fsig->ret);
5536
5537         if (is_set) {
5538                 return emit_array_store (cfg, eklass, args, FALSE);
5539         } else {
5540                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5541                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5542                 return ins;
5543         }
5544 }
5545
5546 static gboolean
5547 is_unsafe_mov_compatible (MonoClass *param_klass, MonoClass *return_klass)
5548 {
5549         uint32_t align;
5550
5551         //Only allow for valuetypes
5552         if (!param_klass->valuetype || !return_klass->valuetype)
5553                 return FALSE;
5554
5555         //That are blitable
5556         if (param_klass->has_references || return_klass->has_references)
5557                 return FALSE;
5558
5559         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5560         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5561                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)))
5562                 return FALSE;
5563
5564         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5565                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8)
5566                 return FALSE;
5567
5568         //And have the same size
5569         if (mono_class_value_size (param_klass, &align) != mono_class_value_size (return_klass, &align))
5570                 return FALSE;
5571         return TRUE;
5572 }
5573
5574 static MonoInst*
5575 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5576 {
5577         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5578         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5579
5580         //Valuetypes that are semantically equivalent
5581         if (is_unsafe_mov_compatible (param_klass, return_klass))
5582                 return args [0];
5583
5584         //Arrays of valuetypes that are semantically equivalent
5585         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (param_klass->element_class, return_klass->element_class))
5586                 return args [0];
5587
5588         return NULL;
5589 }
5590
5591 static MonoInst*
5592 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5593 {
5594 #ifdef MONO_ARCH_SIMD_INTRINSICS
5595         MonoInst *ins = NULL;
5596
5597         if (cfg->opt & MONO_OPT_SIMD) {
5598                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5599                 if (ins)
5600                         return ins;
5601         }
5602 #endif
5603
5604         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5605 }
5606
5607 static MonoInst*
5608 emit_memory_barrier (MonoCompile *cfg, int kind)
5609 {
5610         MonoInst *ins = NULL;
5611         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5612         MONO_ADD_INS (cfg->cbb, ins);
5613         ins->backend.memory_barrier_kind = kind;
5614
5615         return ins;
5616 }
5617
5618 static MonoInst*
5619 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5620 {
5621         MonoInst *ins = NULL;
5622         int opcode = 0;
5623
5624         /* The LLVM backend supports these intrinsics */
5625         if (cmethod->klass == mono_defaults.math_class) {
5626                 if (strcmp (cmethod->name, "Sin") == 0) {
5627                         opcode = OP_SIN;
5628                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5629                         opcode = OP_COS;
5630                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5631                         opcode = OP_SQRT;
5632                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5633                         opcode = OP_ABS;
5634                 }
5635
5636                 if (opcode && fsig->param_count == 1) {
5637                         MONO_INST_NEW (cfg, ins, opcode);
5638                         ins->type = STACK_R8;
5639                         ins->dreg = mono_alloc_freg (cfg);
5640                         ins->sreg1 = args [0]->dreg;
5641                         MONO_ADD_INS (cfg->cbb, ins);
5642                 }
5643
5644                 opcode = 0;
5645                 if (cfg->opt & MONO_OPT_CMOV) {
5646                         if (strcmp (cmethod->name, "Min") == 0) {
5647                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5648                                         opcode = OP_IMIN;
5649                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5650                                         opcode = OP_IMIN_UN;
5651                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5652                                         opcode = OP_LMIN;
5653                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5654                                         opcode = OP_LMIN_UN;
5655                         } else if (strcmp (cmethod->name, "Max") == 0) {
5656                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5657                                         opcode = OP_IMAX;
5658                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5659                                         opcode = OP_IMAX_UN;
5660                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5661                                         opcode = OP_LMAX;
5662                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5663                                         opcode = OP_LMAX_UN;
5664                         }
5665                 }
5666
5667                 if (opcode && fsig->param_count == 2) {
5668                         MONO_INST_NEW (cfg, ins, opcode);
5669                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5670                         ins->dreg = mono_alloc_ireg (cfg);
5671                         ins->sreg1 = args [0]->dreg;
5672                         ins->sreg2 = args [1]->dreg;
5673                         MONO_ADD_INS (cfg->cbb, ins);
5674                 }
5675         }
5676
5677         return ins;
5678 }
5679
5680 static MonoInst*
5681 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5682 {
5683         if (cmethod->klass == mono_defaults.array_class) {
5684                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5685                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5686                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5687                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5688                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5689                         return emit_array_unsafe_mov (cfg, fsig, args);
5690         }
5691
5692         return NULL;
5693 }
5694
5695 static MonoInst*
5696 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5697 {
5698         MonoInst *ins = NULL;
5699
5700         static MonoClass *runtime_helpers_class = NULL;
5701         if (! runtime_helpers_class)
5702                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
5703                         "System.Runtime.CompilerServices", "RuntimeHelpers");
5704
5705         if (cmethod->klass == mono_defaults.string_class) {
5706                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5707                         int dreg = alloc_ireg (cfg);
5708                         int index_reg = alloc_preg (cfg);
5709                         int add_reg = alloc_preg (cfg);
5710
5711 #if SIZEOF_REGISTER == 8
5712                         /* The array reg is 64 bits but the index reg is only 32 */
5713                         MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5714 #else
5715                         index_reg = args [1]->dreg;
5716 #endif
5717                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5718
5719 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5720                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5721                         add_reg = ins->dreg;
5722                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5723                                                                    add_reg, 0);
5724 #else
5725                         int mult_reg = alloc_preg (cfg);
5726                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5727                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5728                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5729                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5730 #endif
5731                         type_from_op (cfg, ins, NULL, NULL);
5732                         return ins;
5733                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5734                         int dreg = alloc_ireg (cfg);
5735                         /* Decompose later to allow more optimizations */
5736                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5737                         ins->type = STACK_I4;
5738                         ins->flags |= MONO_INST_FAULT;
5739                         cfg->cbb->has_array_access = TRUE;
5740                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5741
5742                         return ins;
5743                 } else
5744                         return NULL;
5745         } else if (cmethod->klass == mono_defaults.object_class) {
5746
5747                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5748                         int dreg = alloc_ireg_ref (cfg);
5749                         int vt_reg = alloc_preg (cfg);
5750                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5751                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5752                         type_from_op (cfg, ins, NULL, NULL);
5753
5754                         return ins;
5755 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
5756                 } else if (strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5757                         int dreg = alloc_ireg (cfg);
5758                         int t1 = alloc_ireg (cfg);
5759
5760                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5761                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5762                         ins->type = STACK_I4;
5763
5764                         return ins;
5765 #endif
5766                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5767                         MONO_INST_NEW (cfg, ins, OP_NOP);
5768                         MONO_ADD_INS (cfg->cbb, ins);
5769                         return ins;
5770                 } else
5771                         return NULL;
5772         } else if (cmethod->klass == mono_defaults.array_class) {
5773                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5774                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5775                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5776                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5777
5778 #ifndef MONO_BIG_ARRAYS
5779                 /*
5780                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5781                  * Array methods.
5782                  */
5783                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5784                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5785                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5786                         int dreg = alloc_ireg (cfg);
5787                         int bounds_reg = alloc_ireg_mp (cfg);
5788                         MonoBasicBlock *end_bb, *szarray_bb;
5789                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5790
5791                         NEW_BBLOCK (cfg, end_bb);
5792                         NEW_BBLOCK (cfg, szarray_bb);
5793
5794                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5795                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5796                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5797                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5798                         /* Non-szarray case */
5799                         if (get_length)
5800                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5801                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5802                         else
5803                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5804                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5805                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5806                         MONO_START_BB (cfg, szarray_bb);
5807                         /* Szarray case */
5808                         if (get_length)
5809                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5810                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5811                         else
5812                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5813                         MONO_START_BB (cfg, end_bb);
5814
5815                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5816                         ins->type = STACK_I4;
5817
5818                         return ins;
5819                 }
5820 #endif
5821
5822                 if (cmethod->name [0] != 'g')
5823                         return NULL;
5824
5825                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5826                         int dreg = alloc_ireg (cfg);
5827                         int vtable_reg = alloc_preg (cfg);
5828                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5829                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5830                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5831                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5832                         type_from_op (cfg, ins, NULL, NULL);
5833
5834                         return ins;
5835                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5836                         int dreg = alloc_ireg (cfg);
5837
5838                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5839                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5840                         type_from_op (cfg, ins, NULL, NULL);
5841
5842                         return ins;
5843                 } else
5844                         return NULL;
5845         } else if (cmethod->klass == runtime_helpers_class) {
5846
5847                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5848                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5849                         return ins;
5850                 } else
5851                         return NULL;
5852         } else if (cmethod->klass == mono_defaults.thread_class) {
5853                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5854                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5855                         MONO_ADD_INS (cfg->cbb, ins);
5856                         return ins;
5857                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5858                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5859                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5860                         guint32 opcode = 0;
5861                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5862
5863                         if (fsig->params [0]->type == MONO_TYPE_I1)
5864                                 opcode = OP_LOADI1_MEMBASE;
5865                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5866                                 opcode = OP_LOADU1_MEMBASE;
5867                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5868                                 opcode = OP_LOADI2_MEMBASE;
5869                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5870                                 opcode = OP_LOADU2_MEMBASE;
5871                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5872                                 opcode = OP_LOADI4_MEMBASE;
5873                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5874                                 opcode = OP_LOADU4_MEMBASE;
5875                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5876                                 opcode = OP_LOADI8_MEMBASE;
5877                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5878                                 opcode = OP_LOADR4_MEMBASE;
5879                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5880                                 opcode = OP_LOADR8_MEMBASE;
5881                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5882                                 opcode = OP_LOAD_MEMBASE;
5883
5884                         if (opcode) {
5885                                 MONO_INST_NEW (cfg, ins, opcode);
5886                                 ins->inst_basereg = args [0]->dreg;
5887                                 ins->inst_offset = 0;
5888                                 MONO_ADD_INS (cfg->cbb, ins);
5889
5890                                 switch (fsig->params [0]->type) {
5891                                 case MONO_TYPE_I1:
5892                                 case MONO_TYPE_U1:
5893                                 case MONO_TYPE_I2:
5894                                 case MONO_TYPE_U2:
5895                                 case MONO_TYPE_I4:
5896                                 case MONO_TYPE_U4:
5897                                         ins->dreg = mono_alloc_ireg (cfg);
5898                                         ins->type = STACK_I4;
5899                                         break;
5900                                 case MONO_TYPE_I8:
5901                                 case MONO_TYPE_U8:
5902                                         ins->dreg = mono_alloc_lreg (cfg);
5903                                         ins->type = STACK_I8;
5904                                         break;
5905                                 case MONO_TYPE_I:
5906                                 case MONO_TYPE_U:
5907                                         ins->dreg = mono_alloc_ireg (cfg);
5908 #if SIZEOF_REGISTER == 8
5909                                         ins->type = STACK_I8;
5910 #else
5911                                         ins->type = STACK_I4;
5912 #endif
5913                                         break;
5914                                 case MONO_TYPE_R4:
5915                                 case MONO_TYPE_R8:
5916                                         ins->dreg = mono_alloc_freg (cfg);
5917                                         ins->type = STACK_R8;
5918                                         break;
5919                                 default:
5920                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
5921                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5922                                         ins->type = STACK_OBJ;
5923                                         break;
5924                                 }
5925
5926                                 if (opcode == OP_LOADI8_MEMBASE)
5927                                         ins = mono_decompose_opcode (cfg, ins, NULL);
5928
5929                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
5930
5931                                 return ins;
5932                         }
5933                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5934                         guint32 opcode = 0;
5935                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
5936
5937                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5938                                 opcode = OP_STOREI1_MEMBASE_REG;
5939                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5940                                 opcode = OP_STOREI2_MEMBASE_REG;
5941                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5942                                 opcode = OP_STOREI4_MEMBASE_REG;
5943                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5944                                 opcode = OP_STOREI8_MEMBASE_REG;
5945                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5946                                 opcode = OP_STORER4_MEMBASE_REG;
5947                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5948                                 opcode = OP_STORER8_MEMBASE_REG;
5949                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5950                                 opcode = OP_STORE_MEMBASE_REG;
5951
5952                         if (opcode) {
5953                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
5954
5955                                 MONO_INST_NEW (cfg, ins, opcode);
5956                                 ins->sreg1 = args [1]->dreg;
5957                                 ins->inst_destbasereg = args [0]->dreg;
5958                                 ins->inst_offset = 0;
5959                                 MONO_ADD_INS (cfg->cbb, ins);
5960
5961                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5962                                         ins = mono_decompose_opcode (cfg, ins, NULL);
5963
5964                                 return ins;
5965                         }
5966                 }
5967         } else if (cmethod->klass == mono_defaults.monitor_class) {
5968 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
5969                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 1) {
5970                         MonoCallInst *call;
5971
5972                         if (COMPILE_LLVM (cfg)) {
5973                                 /*
5974                                  * Pass the argument normally, the LLVM backend will handle the
5975                                  * calling convention problems.
5976                                  */
5977                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5978                         } else {
5979                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER,
5980                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5981                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5982                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5983                         }
5984
5985                         return (MonoInst*)call;
5986 #if defined(MONO_ARCH_MONITOR_LOCK_TAKEN_REG)
5987                 } else if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) {
5988                         MonoCallInst *call;
5989
5990                         if (COMPILE_LLVM (cfg)) {
5991                                 /*
5992                                  * Pass the argument normally, the LLVM backend will handle the
5993                                  * calling convention problems.
5994                                  */
5995                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4, NULL, helper_sig_monitor_enter_v4_trampoline_llvm, args);
5996                         } else {
5997                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER_V4,
5998                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5999                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg, MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
6000                                 mono_call_inst_add_outarg_reg (cfg, call, args [1]->dreg, MONO_ARCH_MONITOR_LOCK_TAKEN_REG, FALSE);
6001                         }
6002
6003                         return (MonoInst*)call;
6004 #endif
6005                 } else if (strcmp (cmethod->name, "Exit") == 0 && fsig->param_count == 1) {
6006                         MonoCallInst *call;
6007
6008                         if (COMPILE_LLVM (cfg)) {
6009                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
6010                         } else {
6011                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT,
6012                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
6013                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
6014                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
6015                         }
6016
6017                         return (MonoInst*)call;
6018                 }
6019 #endif
6020         } else if (cmethod->klass->image == mono_defaults.corlib &&
6021                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6022                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6023                 ins = NULL;
6024
6025 #if SIZEOF_REGISTER == 8
6026                 if (strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6027                         if (mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6028                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6029                                 ins->dreg = mono_alloc_preg (cfg);
6030                                 ins->sreg1 = args [0]->dreg;
6031                                 ins->type = STACK_I8;
6032                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6033                                 MONO_ADD_INS (cfg->cbb, ins);
6034                         } else {
6035                                 MonoInst *load_ins;
6036
6037                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6038
6039                                 /* 64 bit reads are already atomic */
6040                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6041                                 load_ins->dreg = mono_alloc_preg (cfg);
6042                                 load_ins->inst_basereg = args [0]->dreg;
6043                                 load_ins->inst_offset = 0;
6044                                 load_ins->type = STACK_I8;
6045                                 MONO_ADD_INS (cfg->cbb, load_ins);
6046
6047                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6048
6049                                 ins = load_ins;
6050                         }
6051                 }
6052 #endif
6053
6054                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6055                         MonoInst *ins_iconst;
6056                         guint32 opcode = 0;
6057
6058                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6059                                 opcode = OP_ATOMIC_ADD_I4;
6060                                 cfg->has_atomic_add_i4 = TRUE;
6061                         }
6062 #if SIZEOF_REGISTER == 8
6063                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6064                                 opcode = OP_ATOMIC_ADD_I8;
6065 #endif
6066                         if (opcode) {
6067                                 if (!mono_arch_opcode_supported (opcode))
6068                                         return NULL;
6069                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6070                                 ins_iconst->inst_c0 = 1;
6071                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6072                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6073
6074                                 MONO_INST_NEW (cfg, ins, opcode);
6075                                 ins->dreg = mono_alloc_ireg (cfg);
6076                                 ins->inst_basereg = args [0]->dreg;
6077                                 ins->inst_offset = 0;
6078                                 ins->sreg2 = ins_iconst->dreg;
6079                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6080                                 MONO_ADD_INS (cfg->cbb, ins);
6081                         }
6082                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6083                         MonoInst *ins_iconst;
6084                         guint32 opcode = 0;
6085
6086                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6087                                 opcode = OP_ATOMIC_ADD_I4;
6088                                 cfg->has_atomic_add_i4 = TRUE;
6089                         }
6090 #if SIZEOF_REGISTER == 8
6091                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6092                                 opcode = OP_ATOMIC_ADD_I8;
6093 #endif
6094                         if (opcode) {
6095                                 if (!mono_arch_opcode_supported (opcode))
6096                                         return NULL;
6097                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6098                                 ins_iconst->inst_c0 = -1;
6099                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6100                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6101
6102                                 MONO_INST_NEW (cfg, ins, opcode);
6103                                 ins->dreg = mono_alloc_ireg (cfg);
6104                                 ins->inst_basereg = args [0]->dreg;
6105                                 ins->inst_offset = 0;
6106                                 ins->sreg2 = ins_iconst->dreg;
6107                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6108                                 MONO_ADD_INS (cfg->cbb, ins);
6109                         }
6110                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6111                         guint32 opcode = 0;
6112
6113                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6114                                 opcode = OP_ATOMIC_ADD_I4;
6115                                 cfg->has_atomic_add_i4 = TRUE;
6116                         }
6117 #if SIZEOF_REGISTER == 8
6118                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6119                                 opcode = OP_ATOMIC_ADD_I8;
6120 #endif
6121                         if (opcode) {
6122                                 if (!mono_arch_opcode_supported (opcode))
6123                                         return NULL;
6124                                 MONO_INST_NEW (cfg, ins, opcode);
6125                                 ins->dreg = mono_alloc_ireg (cfg);
6126                                 ins->inst_basereg = args [0]->dreg;
6127                                 ins->inst_offset = 0;
6128                                 ins->sreg2 = args [1]->dreg;
6129                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6130                                 MONO_ADD_INS (cfg->cbb, ins);
6131                         }
6132                 }
6133                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6134                         MonoInst *f2i = NULL, *i2f;
6135                         guint32 opcode, f2i_opcode, i2f_opcode;
6136                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6137                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6138
6139                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6140                             fsig->params [0]->type == MONO_TYPE_R4) {
6141                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6142                                 f2i_opcode = OP_MOVE_F_TO_I4;
6143                                 i2f_opcode = OP_MOVE_I4_TO_F;
6144                                 cfg->has_atomic_exchange_i4 = TRUE;
6145                         }
6146 #if SIZEOF_REGISTER == 8
6147                         else if (is_ref ||
6148                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6149                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6150                                  fsig->params [0]->type == MONO_TYPE_I) {
6151                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6152                                 f2i_opcode = OP_MOVE_F_TO_I8;
6153                                 i2f_opcode = OP_MOVE_I8_TO_F;
6154                         }
6155 #else
6156                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6157                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6158                                 cfg->has_atomic_exchange_i4 = TRUE;
6159                         }
6160 #endif
6161                         else
6162                                 return NULL;
6163
6164                         if (!mono_arch_opcode_supported (opcode))
6165                                 return NULL;
6166
6167                         if (is_float) {
6168                                 /* TODO: Decompose these opcodes instead of bailing here. */
6169                                 if (COMPILE_SOFT_FLOAT (cfg))
6170                                         return NULL;
6171
6172                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6173                                 f2i->dreg = mono_alloc_ireg (cfg);
6174                                 f2i->sreg1 = args [1]->dreg;
6175                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6176                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6177                                 MONO_ADD_INS (cfg->cbb, f2i);
6178                         }
6179
6180                         MONO_INST_NEW (cfg, ins, opcode);
6181                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6182                         ins->inst_basereg = args [0]->dreg;
6183                         ins->inst_offset = 0;
6184                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6185                         MONO_ADD_INS (cfg->cbb, ins);
6186
6187                         switch (fsig->params [0]->type) {
6188                         case MONO_TYPE_I4:
6189                                 ins->type = STACK_I4;
6190                                 break;
6191                         case MONO_TYPE_I8:
6192                                 ins->type = STACK_I8;
6193                                 break;
6194                         case MONO_TYPE_I:
6195 #if SIZEOF_REGISTER == 8
6196                                 ins->type = STACK_I8;
6197 #else
6198                                 ins->type = STACK_I4;
6199 #endif
6200                                 break;
6201                         case MONO_TYPE_R4:
6202                         case MONO_TYPE_R8:
6203                                 ins->type = STACK_R8;
6204                                 break;
6205                         default:
6206                                 g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6207                                 ins->type = STACK_OBJ;
6208                                 break;
6209                         }
6210
6211                         if (is_float) {
6212                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6213                                 i2f->dreg = mono_alloc_freg (cfg);
6214                                 i2f->sreg1 = ins->dreg;
6215                                 i2f->type = STACK_R8;
6216                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6217                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6218                                 MONO_ADD_INS (cfg->cbb, i2f);
6219
6220                                 ins = i2f;
6221                         }
6222
6223                         if (cfg->gen_write_barriers && is_ref)
6224                                 emit_write_barrier (cfg, args [0], args [1]);
6225                 }
6226                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6227                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6228                         guint32 opcode, f2i_opcode, i2f_opcode;
6229                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [1]);
6230                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6231
6232                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6233                             fsig->params [1]->type == MONO_TYPE_R4) {
6234                                 opcode = OP_ATOMIC_CAS_I4;
6235                                 f2i_opcode = OP_MOVE_F_TO_I4;
6236                                 i2f_opcode = OP_MOVE_I4_TO_F;
6237                                 cfg->has_atomic_cas_i4 = TRUE;
6238                         }
6239 #if SIZEOF_REGISTER == 8
6240                         else if (is_ref ||
6241                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6242                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6243                                  fsig->params [1]->type == MONO_TYPE_I) {
6244                                 opcode = OP_ATOMIC_CAS_I8;
6245                                 f2i_opcode = OP_MOVE_F_TO_I8;
6246                                 i2f_opcode = OP_MOVE_I8_TO_F;
6247                         }
6248 #else
6249                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6250                                 opcode = OP_ATOMIC_CAS_I4;
6251                                 cfg->has_atomic_cas_i4 = TRUE;
6252                         }
6253 #endif
6254                         else
6255                                 return NULL;
6256
6257                         if (!mono_arch_opcode_supported (opcode))
6258                                 return NULL;
6259
6260                         if (is_float) {
6261                                 /* TODO: Decompose these opcodes instead of bailing here. */
6262                                 if (COMPILE_SOFT_FLOAT (cfg))
6263                                         return NULL;
6264
6265                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6266                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6267                                 f2i_new->sreg1 = args [1]->dreg;
6268                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6269                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6270                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6271
6272                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6273                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6274                                 f2i_cmp->sreg1 = args [2]->dreg;
6275                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6276                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6277                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6278                         }
6279
6280                         MONO_INST_NEW (cfg, ins, opcode);
6281                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6282                         ins->sreg1 = args [0]->dreg;
6283                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6284                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6285                         MONO_ADD_INS (cfg->cbb, ins);
6286
6287                         switch (fsig->params [1]->type) {
6288                         case MONO_TYPE_I4:
6289                                 ins->type = STACK_I4;
6290                                 break;
6291                         case MONO_TYPE_I8:
6292                                 ins->type = STACK_I8;
6293                                 break;
6294                         case MONO_TYPE_I:
6295 #if SIZEOF_REGISTER == 8
6296                                 ins->type = STACK_I8;
6297 #else
6298                                 ins->type = STACK_I4;
6299 #endif
6300                                 break;
6301                         case MONO_TYPE_R4:
6302                         case MONO_TYPE_R8:
6303                                 ins->type = STACK_R8;
6304                                 break;
6305                         default:
6306                                 g_assert (mini_type_is_reference (cfg, fsig->params [1]));
6307                                 ins->type = STACK_OBJ;
6308                                 break;
6309                         }
6310
6311                         if (is_float) {
6312                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6313                                 i2f->dreg = mono_alloc_freg (cfg);
6314                                 i2f->sreg1 = ins->dreg;
6315                                 i2f->type = STACK_R8;
6316                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6317                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6318                                 MONO_ADD_INS (cfg->cbb, i2f);
6319
6320                                 ins = i2f;
6321                         }
6322
6323                         if (cfg->gen_write_barriers && is_ref)
6324                                 emit_write_barrier (cfg, args [0], args [1]);
6325                 }
6326                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6327                          fsig->params [1]->type == MONO_TYPE_I4) {
6328                         MonoInst *cmp, *ceq;
6329
6330                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6331                                 return NULL;
6332
6333                         /* int32 r = CAS (location, value, comparand); */
6334                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6335                         ins->dreg = alloc_ireg (cfg);
6336                         ins->sreg1 = args [0]->dreg;
6337                         ins->sreg2 = args [1]->dreg;
6338                         ins->sreg3 = args [2]->dreg;
6339                         ins->type = STACK_I4;
6340                         MONO_ADD_INS (cfg->cbb, ins);
6341
6342                         /* bool result = r == comparand; */
6343                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6344                         cmp->sreg1 = ins->dreg;
6345                         cmp->sreg2 = args [2]->dreg;
6346                         cmp->type = STACK_I4;
6347                         MONO_ADD_INS (cfg->cbb, cmp);
6348
6349                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6350                         ceq->dreg = alloc_ireg (cfg);
6351                         ceq->type = STACK_I4;
6352                         MONO_ADD_INS (cfg->cbb, ceq);
6353
6354                         /* *success = result; */
6355                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6356
6357                         cfg->has_atomic_cas_i4 = TRUE;
6358                 }
6359                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6360                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6361
6362                 if (ins)
6363                         return ins;
6364         } else if (cmethod->klass->image == mono_defaults.corlib &&
6365                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6366                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6367                 ins = NULL;
6368
6369                 if (!strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6370                         guint32 opcode = 0;
6371                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6372                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6373
6374                         if (fsig->params [0]->type == MONO_TYPE_I1)
6375                                 opcode = OP_ATOMIC_LOAD_I1;
6376                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6377                                 opcode = OP_ATOMIC_LOAD_U1;
6378                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6379                                 opcode = OP_ATOMIC_LOAD_I2;
6380                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6381                                 opcode = OP_ATOMIC_LOAD_U2;
6382                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6383                                 opcode = OP_ATOMIC_LOAD_I4;
6384                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6385                                 opcode = OP_ATOMIC_LOAD_U4;
6386                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6387                                 opcode = OP_ATOMIC_LOAD_R4;
6388                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6389                                 opcode = OP_ATOMIC_LOAD_R8;
6390 #if SIZEOF_REGISTER == 8
6391                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6392                                 opcode = OP_ATOMIC_LOAD_I8;
6393                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6394                                 opcode = OP_ATOMIC_LOAD_U8;
6395 #else
6396                         else if (fsig->params [0]->type == MONO_TYPE_I)
6397                                 opcode = OP_ATOMIC_LOAD_I4;
6398                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6399                                 opcode = OP_ATOMIC_LOAD_U4;
6400 #endif
6401
6402                         if (opcode) {
6403                                 if (!mono_arch_opcode_supported (opcode))
6404                                         return NULL;
6405
6406                                 MONO_INST_NEW (cfg, ins, opcode);
6407                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6408                                 ins->sreg1 = args [0]->dreg;
6409                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6410                                 MONO_ADD_INS (cfg->cbb, ins);
6411
6412                                 switch (fsig->params [0]->type) {
6413                                 case MONO_TYPE_BOOLEAN:
6414                                 case MONO_TYPE_I1:
6415                                 case MONO_TYPE_U1:
6416                                 case MONO_TYPE_I2:
6417                                 case MONO_TYPE_U2:
6418                                 case MONO_TYPE_I4:
6419                                 case MONO_TYPE_U4:
6420                                         ins->type = STACK_I4;
6421                                         break;
6422                                 case MONO_TYPE_I8:
6423                                 case MONO_TYPE_U8:
6424                                         ins->type = STACK_I8;
6425                                         break;
6426                                 case MONO_TYPE_I:
6427                                 case MONO_TYPE_U:
6428 #if SIZEOF_REGISTER == 8
6429                                         ins->type = STACK_I8;
6430 #else
6431                                         ins->type = STACK_I4;
6432 #endif
6433                                         break;
6434                                 case MONO_TYPE_R4:
6435                                 case MONO_TYPE_R8:
6436                                         ins->type = STACK_R8;
6437                                         break;
6438                                 default:
6439                                         g_assert (mini_type_is_reference (cfg, fsig->params [0]));
6440                                         ins->type = STACK_OBJ;
6441                                         break;
6442                                 }
6443                         }
6444                 }
6445
6446                 if (!strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6447                         guint32 opcode = 0;
6448                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [0]);
6449
6450                         if (fsig->params [0]->type == MONO_TYPE_I1)
6451                                 opcode = OP_ATOMIC_STORE_I1;
6452                         else if (fsig->params [0]->type == MONO_TYPE_U1 || fsig->params [0]->type == MONO_TYPE_BOOLEAN)
6453                                 opcode = OP_ATOMIC_STORE_U1;
6454                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6455                                 opcode = OP_ATOMIC_STORE_I2;
6456                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6457                                 opcode = OP_ATOMIC_STORE_U2;
6458                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6459                                 opcode = OP_ATOMIC_STORE_I4;
6460                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6461                                 opcode = OP_ATOMIC_STORE_U4;
6462                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6463                                 opcode = OP_ATOMIC_STORE_R4;
6464                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6465                                 opcode = OP_ATOMIC_STORE_R8;
6466 #if SIZEOF_REGISTER == 8
6467                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_I)
6468                                 opcode = OP_ATOMIC_STORE_I8;
6469                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U8 || fsig->params [0]->type == MONO_TYPE_U)
6470                                 opcode = OP_ATOMIC_STORE_U8;
6471 #else
6472                         else if (fsig->params [0]->type == MONO_TYPE_I)
6473                                 opcode = OP_ATOMIC_STORE_I4;
6474                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_U)
6475                                 opcode = OP_ATOMIC_STORE_U4;
6476 #endif
6477
6478                         if (opcode) {
6479                                 if (!mono_arch_opcode_supported (opcode))
6480                                         return NULL;
6481
6482                                 MONO_INST_NEW (cfg, ins, opcode);
6483                                 ins->dreg = args [0]->dreg;
6484                                 ins->sreg1 = args [1]->dreg;
6485                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6486                                 MONO_ADD_INS (cfg->cbb, ins);
6487
6488                                 if (cfg->gen_write_barriers && is_ref)
6489                                         emit_write_barrier (cfg, args [0], args [1]);
6490                         }
6491                 }
6492
6493                 if (ins)
6494                         return ins;
6495         } else if (cmethod->klass->image == mono_defaults.corlib &&
6496                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6497                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6498                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6499                         if (should_insert_brekpoint (cfg->method)) {
6500                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6501                         } else {
6502                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6503                                 MONO_ADD_INS (cfg->cbb, ins);
6504                         }
6505                         return ins;
6506                 }
6507         } else if (cmethod->klass->image == mono_defaults.corlib &&
6508                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6509                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6510                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6511 #ifdef TARGET_WIN32
6512                         EMIT_NEW_ICONST (cfg, ins, 1);
6513 #else
6514                         EMIT_NEW_ICONST (cfg, ins, 0);
6515 #endif
6516                 }
6517         } else if (cmethod->klass == mono_defaults.math_class) {
6518                 /*
6519                  * There is general branchless code for Min/Max, but it does not work for
6520                  * all inputs:
6521                  * http://everything2.com/?node_id=1051618
6522                  */
6523         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6524                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6525                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6526                                 !strcmp (cmethod->klass->name, "Selector")) ||
6527                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6528                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6529                                 !strcmp (cmethod->klass->name, "Selector"))
6530                            ) {
6531 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
6532                 if (!strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6533                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6534                     cfg->compile_aot) {
6535                         MonoInst *pi;
6536                         MonoJumpInfoToken *ji;
6537                         MonoString *s;
6538
6539                         cfg->disable_llvm = TRUE;
6540
6541                         if (args [0]->opcode == OP_GOT_ENTRY) {
6542                                 pi = args [0]->inst_p1;
6543                                 g_assert (pi->opcode == OP_PATCH_INFO);
6544                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6545                                 ji = pi->inst_p0;
6546                         } else {
6547                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6548                                 ji = args [0]->inst_p0;
6549                         }
6550
6551                         NULLIFY_INS (args [0]);
6552
6553                         // FIXME: Ugly
6554                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6555                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6556                         ins->dreg = mono_alloc_ireg (cfg);
6557                         // FIXME: Leaks
6558                         ins->inst_p0 = mono_string_to_utf8 (s);
6559                         MONO_ADD_INS (cfg->cbb, ins);
6560                         return ins;
6561                 }
6562 #endif
6563         }
6564
6565 #ifdef MONO_ARCH_SIMD_INTRINSICS
6566         if (cfg->opt & MONO_OPT_SIMD) {
6567                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6568                 if (ins)
6569                         return ins;
6570         }
6571 #endif
6572
6573         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6574         if (ins)
6575                 return ins;
6576
6577         if (COMPILE_LLVM (cfg)) {
6578                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6579                 if (ins)
6580                         return ins;
6581         }
6582
6583         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6584 }
6585
6586 /*
6587  * This entry point could be used later for arbitrary method
6588  * redirection.
6589  */
6590 inline static MonoInst*
6591 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6592                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this)
6593 {
6594         if (method->klass == mono_defaults.string_class) {
6595                 /* managed string allocation support */
6596                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6597                         MonoInst *iargs [2];
6598                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6599                         MonoMethod *managed_alloc = NULL;
6600
6601                         g_assert (vtable); /*Should not fail since it System.String*/
6602 #ifndef MONO_CROSS_COMPILE
6603                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6604 #endif
6605                         if (!managed_alloc)
6606                                 return NULL;
6607                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6608                         iargs [1] = args [0];
6609                         return mono_emit_method_call (cfg, managed_alloc, iargs, this);
6610                 }
6611         }
6612         return NULL;
6613 }
6614
6615 static void
6616 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6617 {
6618         MonoInst *store, *temp;
6619         int i;
6620
6621         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6622                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6623
6624                 /*
6625                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6626                  * would be different than the MonoInst's used to represent arguments, and
6627                  * the ldelema implementation can't deal with that.
6628                  * Solution: When ldelema is used on an inline argument, create a var for
6629                  * it, emit ldelema on that var, and emit the saving code below in
6630                  * inline_method () if needed.
6631                  */
6632                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6633                 cfg->args [i] = temp;
6634                 /* This uses cfg->args [i] which is set by the preceeding line */
6635                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6636                 store->cil_code = sp [0]->cil_code;
6637                 sp++;
6638         }
6639 }
6640
6641 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6642 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6643
6644 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6645 static gboolean
6646 check_inline_called_method_name_limit (MonoMethod *called_method)
6647 {
6648         int strncmp_result;
6649         static const char *limit = NULL;
6650
6651         if (limit == NULL) {
6652                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6653
6654                 if (limit_string != NULL)
6655                         limit = limit_string;
6656                 else
6657                         limit = "";
6658         }
6659
6660         if (limit [0] != '\0') {
6661                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6662
6663                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6664                 g_free (called_method_name);
6665
6666                 //return (strncmp_result <= 0);
6667                 return (strncmp_result == 0);
6668         } else {
6669                 return TRUE;
6670         }
6671 }
6672 #endif
6673
6674 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6675 static gboolean
6676 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6677 {
6678         int strncmp_result;
6679         static const char *limit = NULL;
6680
6681         if (limit == NULL) {
6682                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6683                 if (limit_string != NULL) {
6684                         limit = limit_string;
6685                 } else {
6686                         limit = "";
6687                 }
6688         }
6689
6690         if (limit [0] != '\0') {
6691                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6692
6693                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6694                 g_free (caller_method_name);
6695
6696                 //return (strncmp_result <= 0);
6697                 return (strncmp_result == 0);
6698         } else {
6699                 return TRUE;
6700         }
6701 }
6702 #endif
6703
6704 static void
6705 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6706 {
6707         static double r8_0 = 0.0;
6708         static float r4_0 = 0.0;
6709         MonoInst *ins;
6710         int t;
6711
6712         rtype = mini_get_underlying_type (cfg, rtype);
6713         t = rtype->type;
6714
6715         if (rtype->byref) {
6716                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6717         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6718                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6719         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6720                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6721         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6722                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6723                 ins->type = STACK_R4;
6724                 ins->inst_p0 = (void*)&r4_0;
6725                 ins->dreg = dreg;
6726                 MONO_ADD_INS (cfg->cbb, ins);
6727         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6728                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6729                 ins->type = STACK_R8;
6730                 ins->inst_p0 = (void*)&r8_0;
6731                 ins->dreg = dreg;
6732                 MONO_ADD_INS (cfg->cbb, ins);
6733         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6734                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6735                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6736         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6737                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6738         } else {
6739                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6740         }
6741 }
6742
6743 static void
6744 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6745 {
6746         int t;
6747
6748         rtype = mini_get_underlying_type (cfg, rtype);
6749         t = rtype->type;
6750
6751         if (rtype->byref) {
6752                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6753         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6754                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6755         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6756                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6757         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6758                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6759         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6760                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6761         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6762                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6763                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6764         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, rtype)) {
6765                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6766         } else {
6767                 emit_init_rvar (cfg, dreg, rtype);
6768         }
6769 }
6770
6771 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6772 static void
6773 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6774 {
6775         MonoInst *var = cfg->locals [local];
6776         if (COMPILE_SOFT_FLOAT (cfg)) {
6777                 MonoInst *store;
6778                 int reg = alloc_dreg (cfg, var->type);
6779                 emit_init_rvar (cfg, reg, type);
6780                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6781         } else {
6782                 if (init)
6783                         emit_init_rvar (cfg, var->dreg, type);
6784                 else
6785                         emit_dummy_init_rvar (cfg, var->dreg, type);
6786         }
6787 }
6788
6789 /*
6790  * inline_method:
6791  *
6792  *   Return the cost of inlining CMETHOD.
6793  */
6794 static int
6795 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6796                            guchar *ip, guint real_offset, gboolean inline_always, MonoBasicBlock **out_cbb)
6797 {
6798         MonoInst *ins, *rvar = NULL;
6799         MonoMethodHeader *cheader;
6800         MonoBasicBlock *ebblock, *sbblock;
6801         int i, costs;
6802         MonoMethod *prev_inlined_method;
6803         MonoInst **prev_locals, **prev_args;
6804         MonoType **prev_arg_types;
6805         guint prev_real_offset;
6806         GHashTable *prev_cbb_hash;
6807         MonoBasicBlock **prev_cil_offset_to_bb;
6808         MonoBasicBlock *prev_cbb;
6809         unsigned char* prev_cil_start;
6810         guint32 prev_cil_offset_to_bb_len;
6811         MonoMethod *prev_current_method;
6812         MonoGenericContext *prev_generic_context;
6813         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual = FALSE;
6814
6815         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6816
6817 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6818         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6819                 return 0;
6820 #endif
6821 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6822         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6823                 return 0;
6824 #endif
6825
6826         if (!fsig)
6827                 fsig = mono_method_signature (cmethod);
6828
6829         if (cfg->verbose_level > 2)
6830                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6831
6832         if (!cmethod->inline_info) {
6833                 cfg->stat_inlineable_methods++;
6834                 cmethod->inline_info = 1;
6835         }
6836
6837         /* allocate local variables */
6838         cheader = mono_method_get_header (cmethod);
6839
6840         if (cheader == NULL || mono_loader_get_last_error ()) {
6841                 MonoLoaderError *error = mono_loader_get_last_error ();
6842
6843                 if (cheader)
6844                         mono_metadata_free_mh (cheader);
6845                 if (inline_always && error)
6846                         mono_cfg_set_exception (cfg, error->exception_type);
6847
6848                 mono_loader_clear_error ();
6849                 return 0;
6850         }
6851
6852         /*Must verify before creating locals as it can cause the JIT to assert.*/
6853         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6854                 mono_metadata_free_mh (cheader);
6855                 return 0;
6856         }
6857
6858         /* allocate space to store the return value */
6859         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6860                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6861         }
6862
6863         prev_locals = cfg->locals;
6864         cfg->locals = mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6865         for (i = 0; i < cheader->num_locals; ++i)
6866                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6867
6868         /* allocate start and end blocks */
6869         /* This is needed so if the inline is aborted, we can clean up */
6870         NEW_BBLOCK (cfg, sbblock);
6871         sbblock->real_offset = real_offset;
6872
6873         NEW_BBLOCK (cfg, ebblock);
6874         ebblock->block_num = cfg->num_bblocks++;
6875         ebblock->real_offset = real_offset;
6876
6877         prev_args = cfg->args;
6878         prev_arg_types = cfg->arg_types;
6879         prev_inlined_method = cfg->inlined_method;
6880         cfg->inlined_method = cmethod;
6881         cfg->ret_var_set = FALSE;
6882         cfg->inline_depth ++;
6883         prev_real_offset = cfg->real_offset;
6884         prev_cbb_hash = cfg->cbb_hash;
6885         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6886         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6887         prev_cil_start = cfg->cil_start;
6888         prev_cbb = cfg->cbb;
6889         prev_current_method = cfg->current_method;
6890         prev_generic_context = cfg->generic_context;
6891         prev_ret_var_set = cfg->ret_var_set;
6892         prev_disable_inline = cfg->disable_inline;
6893
6894         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6895                 virtual = TRUE;
6896
6897         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual);
6898
6899         ret_var_set = cfg->ret_var_set;
6900
6901         cfg->inlined_method = prev_inlined_method;
6902         cfg->real_offset = prev_real_offset;
6903         cfg->cbb_hash = prev_cbb_hash;
6904         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6905         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6906         cfg->cil_start = prev_cil_start;
6907         cfg->locals = prev_locals;
6908         cfg->args = prev_args;
6909         cfg->arg_types = prev_arg_types;
6910         cfg->current_method = prev_current_method;
6911         cfg->generic_context = prev_generic_context;
6912         cfg->ret_var_set = prev_ret_var_set;
6913         cfg->disable_inline = prev_disable_inline;
6914         cfg->inline_depth --;
6915
6916         if ((costs >= 0 && costs < 60) || inline_always) {
6917                 if (cfg->verbose_level > 2)
6918                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6919
6920                 cfg->stat_inlined_methods++;
6921
6922                 /* always add some code to avoid block split failures */
6923                 MONO_INST_NEW (cfg, ins, OP_NOP);
6924                 MONO_ADD_INS (prev_cbb, ins);
6925
6926                 prev_cbb->next_bb = sbblock;
6927                 link_bblock (cfg, prev_cbb, sbblock);
6928
6929                 /*
6930                  * Get rid of the begin and end bblocks if possible to aid local
6931                  * optimizations.
6932                  */
6933                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6934
6935                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6936                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6937
6938                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6939                         MonoBasicBlock *prev = ebblock->in_bb [0];
6940                         mono_merge_basic_blocks (cfg, prev, ebblock);
6941                         cfg->cbb = prev;
6942                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6943                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
6944                                 cfg->cbb = prev_cbb;
6945                         }
6946                 } else {
6947                         /*
6948                          * Its possible that the rvar is set in some prev bblock, but not in others.
6949                          * (#1835).
6950                          */
6951                         if (rvar) {
6952                                 MonoBasicBlock *bb;
6953
6954                                 for (i = 0; i < ebblock->in_count; ++i) {
6955                                         bb = ebblock->in_bb [i];
6956
6957                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6958                                                 cfg->cbb = bb;
6959
6960                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6961                                         }
6962                                 }
6963                         }
6964
6965                         cfg->cbb = ebblock;
6966                 }
6967
6968                 if (out_cbb)
6969                         *out_cbb = cfg->cbb;
6970
6971                 if (rvar) {
6972                         /*
6973                          * If the inlined method contains only a throw, then the ret var is not
6974                          * set, so set it to a dummy value.
6975                          */
6976                         if (!ret_var_set)
6977                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6978
6979                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6980                         *sp++ = ins;
6981                 }
6982                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6983                 return costs + 1;
6984         } else {
6985                 if (cfg->verbose_level > 2)
6986                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6987                 cfg->exception_type = MONO_EXCEPTION_NONE;
6988                 mono_loader_clear_error ();
6989
6990                 /* This gets rid of the newly added bblocks */
6991                 cfg->cbb = prev_cbb;
6992         }
6993         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6994         return 0;
6995 }
6996
6997 /*
6998  * Some of these comments may well be out-of-date.
6999  * Design decisions: we do a single pass over the IL code (and we do bblock
7000  * splitting/merging in the few cases when it's required: a back jump to an IL
7001  * address that was not already seen as bblock starting point).
7002  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7003  * Complex operations are decomposed in simpler ones right away. We need to let the
7004  * arch-specific code peek and poke inside this process somehow (except when the
7005  * optimizations can take advantage of the full semantic info of coarse opcodes).
7006  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7007  * MonoInst->opcode initially is the IL opcode or some simplification of that
7008  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7009  * opcode with value bigger than OP_LAST.
7010  * At this point the IR can be handed over to an interpreter, a dumb code generator
7011  * or to the optimizing code generator that will translate it to SSA form.
7012  *
7013  * Profiling directed optimizations.
7014  * We may compile by default with few or no optimizations and instrument the code
7015  * or the user may indicate what methods to optimize the most either in a config file
7016  * or through repeated runs where the compiler applies offline the optimizations to
7017  * each method and then decides if it was worth it.
7018  */
7019
7020 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7021 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7022 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7023 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7024 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7025 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7026 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7027 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) TYPE_LOAD_ERROR ((klass))
7028
7029 /* offset from br.s -> br like opcodes */
7030 #define BIG_BRANCH_OFFSET 13
7031
7032 static gboolean
7033 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7034 {
7035         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7036
7037         return b == NULL || b == bb;
7038 }
7039
7040 static int
7041 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7042 {
7043         unsigned char *ip = start;
7044         unsigned char *target;
7045         int i;
7046         guint cli_addr;
7047         MonoBasicBlock *bblock;
7048         const MonoOpcode *opcode;
7049
7050         while (ip < end) {
7051                 cli_addr = ip - start;
7052                 i = mono_opcode_value ((const guint8 **)&ip, end);
7053                 if (i < 0)
7054                         UNVERIFIED;
7055                 opcode = &mono_opcodes [i];
7056                 switch (opcode->argument) {
7057                 case MonoInlineNone:
7058                         ip++;
7059                         break;
7060                 case MonoInlineString:
7061                 case MonoInlineType:
7062                 case MonoInlineField:
7063                 case MonoInlineMethod:
7064                 case MonoInlineTok:
7065                 case MonoInlineSig:
7066                 case MonoShortInlineR:
7067                 case MonoInlineI:
7068                         ip += 5;
7069                         break;
7070                 case MonoInlineVar:
7071                         ip += 3;
7072                         break;
7073                 case MonoShortInlineVar:
7074                 case MonoShortInlineI:
7075                         ip += 2;
7076                         break;
7077                 case MonoShortInlineBrTarget:
7078                         target = start + cli_addr + 2 + (signed char)ip [1];
7079                         GET_BBLOCK (cfg, bblock, target);
7080                         ip += 2;
7081                         if (ip < end)
7082                                 GET_BBLOCK (cfg, bblock, ip);
7083                         break;
7084                 case MonoInlineBrTarget:
7085                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7086                         GET_BBLOCK (cfg, bblock, target);
7087                         ip += 5;
7088                         if (ip < end)
7089                                 GET_BBLOCK (cfg, bblock, ip);
7090                         break;
7091                 case MonoInlineSwitch: {
7092                         guint32 n = read32 (ip + 1);
7093                         guint32 j;
7094                         ip += 5;
7095                         cli_addr += 5 + 4 * n;
7096                         target = start + cli_addr;
7097                         GET_BBLOCK (cfg, bblock, target);
7098
7099                         for (j = 0; j < n; ++j) {
7100                                 target = start + cli_addr + (gint32)read32 (ip);
7101                                 GET_BBLOCK (cfg, bblock, target);
7102                                 ip += 4;
7103                         }
7104                         break;
7105                 }
7106                 case MonoInlineR:
7107                 case MonoInlineI8:
7108                         ip += 9;
7109                         break;
7110                 default:
7111                         g_assert_not_reached ();
7112                 }
7113
7114                 if (i == CEE_THROW) {
7115                         unsigned char *bb_start = ip - 1;
7116
7117                         /* Find the start of the bblock containing the throw */
7118                         bblock = NULL;
7119                         while ((bb_start >= start) && !bblock) {
7120                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7121                                 bb_start --;
7122                         }
7123                         if (bblock)
7124                                 bblock->out_of_line = 1;
7125                 }
7126         }
7127         return 0;
7128 unverified:
7129 exception_exit:
7130         *pos = ip;
7131         return 1;
7132 }
7133
7134 static inline MonoMethod *
7135 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7136 {
7137         MonoMethod *method;
7138
7139         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7140                 method = mono_method_get_wrapper_data (m, token);
7141                 if (context) {
7142                         MonoError error;
7143                         method = mono_class_inflate_generic_method_checked (method, context, &error);
7144                         g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
7145                 }
7146         } else {
7147                 method = mono_get_method_full (m->klass->image, token, klass, context);
7148         }
7149
7150         return method;
7151 }
7152
7153 static inline MonoMethod *
7154 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7155 {
7156         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
7157
7158         if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
7159                 return NULL;
7160
7161         return method;
7162 }
7163
7164 static inline MonoClass*
7165 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7166 {
7167         MonoError error;
7168         MonoClass *klass;
7169
7170         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7171                 klass = mono_method_get_wrapper_data (method, token);
7172                 if (context)
7173                         klass = mono_class_inflate_generic_class (klass, context);
7174         } else {
7175                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7176                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7177         }
7178         if (klass)
7179                 mono_class_init (klass);
7180         return klass;
7181 }
7182
7183 static inline MonoMethodSignature*
7184 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7185 {
7186         MonoMethodSignature *fsig;
7187
7188         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7189                 MonoError error;
7190
7191                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7192                 if (context) {
7193                         fsig = mono_inflate_generic_signature (fsig, context, &error);
7194                         // FIXME:
7195                         g_assert (mono_error_ok (&error));
7196                 }
7197         } else {
7198                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7199         }
7200         return fsig;
7201 }
7202
7203 static MonoMethod*
7204 throw_exception (void)
7205 {
7206         static MonoMethod *method = NULL;
7207
7208         if (!method) {
7209                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7210                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7211         }
7212         g_assert (method);
7213         return method;
7214 }
7215
7216 static void
7217 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7218 {
7219         MonoMethod *thrower = throw_exception ();
7220         MonoInst *args [1];
7221
7222         EMIT_NEW_PCONST (cfg, args [0], ex);
7223         mono_emit_method_call (cfg, thrower, args, NULL);
7224 }
7225
7226 /*
7227  * Return the original method is a wrapper is specified. We can only access
7228  * the custom attributes from the original method.
7229  */
7230 static MonoMethod*
7231 get_original_method (MonoMethod *method)
7232 {
7233         if (method->wrapper_type == MONO_WRAPPER_NONE)
7234                 return method;
7235
7236         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7237         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7238                 return NULL;
7239
7240         /* in other cases we need to find the original method */
7241         return mono_marshal_method_from_wrapper (method);
7242 }
7243
7244 static void
7245 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
7246                                           MonoBasicBlock *bblock, unsigned char *ip)
7247 {
7248         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7249         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7250         if (ex)
7251                 emit_throw_exception (cfg, ex);
7252 }
7253
7254 static void
7255 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
7256                                          MonoBasicBlock *bblock, unsigned char *ip)
7257 {
7258         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7259         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7260         if (ex)
7261                 emit_throw_exception (cfg, ex);
7262 }
7263
7264 /*
7265  * Check that the IL instructions at ip are the array initialization
7266  * sequence and return the pointer to the data and the size.
7267  */
7268 static const char*
7269 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7270 {
7271         /*
7272          * newarr[System.Int32]
7273          * dup
7274          * ldtoken field valuetype ...
7275          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7276          */
7277         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7278                 MonoError error;
7279                 guint32 token = read32 (ip + 7);
7280                 guint32 field_token = read32 (ip + 2);
7281                 guint32 field_index = field_token & 0xffffff;
7282                 guint32 rva;
7283                 const char *data_ptr;
7284                 int size = 0;
7285                 MonoMethod *cmethod;
7286                 MonoClass *dummy_class;
7287                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7288                 int dummy_align;
7289
7290                 if (!field) {
7291                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7292                         return NULL;
7293                 }
7294
7295                 *out_field_token = field_token;
7296
7297                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7298                 if (!cmethod)
7299                         return NULL;
7300                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7301                         return NULL;
7302                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7303                 case MONO_TYPE_BOOLEAN:
7304                 case MONO_TYPE_I1:
7305                 case MONO_TYPE_U1:
7306                         size = 1; break;
7307                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7308 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7309                 case MONO_TYPE_CHAR:
7310                 case MONO_TYPE_I2:
7311                 case MONO_TYPE_U2:
7312                         size = 2; break;
7313                 case MONO_TYPE_I4:
7314                 case MONO_TYPE_U4:
7315                 case MONO_TYPE_R4:
7316                         size = 4; break;
7317                 case MONO_TYPE_R8:
7318                 case MONO_TYPE_I8:
7319                 case MONO_TYPE_U8:
7320                         size = 8; break;
7321 #endif
7322                 default:
7323                         return NULL;
7324                 }
7325                 size *= len;
7326                 if (size > mono_type_size (field->type, &dummy_align))
7327                     return NULL;
7328                 *out_size = size;
7329                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7330                 if (!image_is_dynamic (method->klass->image)) {
7331                         field_index = read32 (ip + 2) & 0xffffff;
7332                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7333                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7334                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7335                         /* for aot code we do the lookup on load */
7336                         if (aot && data_ptr)
7337                                 return GUINT_TO_POINTER (rva);
7338                 } else {
7339                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7340                         g_assert (!aot);
7341                         data_ptr = mono_field_get_data (field);
7342                 }
7343                 return data_ptr;
7344         }
7345         return NULL;
7346 }
7347
7348 static void
7349 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7350 {
7351         char *method_fname = mono_method_full_name (method, TRUE);
7352         char *method_code;
7353         MonoMethodHeader *header = mono_method_get_header (method);
7354
7355         if (header->code_size == 0)
7356                 method_code = g_strdup ("method body is empty.");
7357         else
7358                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7359         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7360         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
7361         g_free (method_fname);
7362         g_free (method_code);
7363         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7364 }
7365
7366 static void
7367 set_exception_object (MonoCompile *cfg, MonoException *exception)
7368 {
7369         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
7370         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr);
7371         cfg->exception_ptr = exception;
7372 }
7373
7374 static void
7375 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7376 {
7377         MonoInst *ins;
7378         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7379         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7380                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7381                 /* Optimize reg-reg moves away */
7382                 /*
7383                  * Can't optimize other opcodes, since sp[0] might point to
7384                  * the last ins of a decomposed opcode.
7385                  */
7386                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7387         } else {
7388                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7389         }
7390 }
7391
7392 /*
7393  * ldloca inhibits many optimizations so try to get rid of it in common
7394  * cases.
7395  */
7396 static inline unsigned char *
7397 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7398 {
7399         int local, token;
7400         MonoClass *klass;
7401         MonoType *type;
7402
7403         if (size == 1) {
7404                 local = ip [1];
7405                 ip += 2;
7406         } else {
7407                 local = read16 (ip + 2);
7408                 ip += 4;
7409         }
7410
7411         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7412                 /* From the INITOBJ case */
7413                 token = read32 (ip + 2);
7414                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7415                 CHECK_TYPELOAD (klass);
7416                 type = mini_get_underlying_type (cfg, &klass->byval_arg);
7417                 emit_init_local (cfg, local, type, TRUE);
7418                 return ip + 6;
7419         }
7420  exception_exit:
7421         return NULL;
7422 }
7423
7424 static gboolean
7425 is_exception_class (MonoClass *class)
7426 {
7427         while (class) {
7428                 if (class == mono_defaults.exception_class)
7429                         return TRUE;
7430                 class = class->parent;
7431         }
7432         return FALSE;
7433 }
7434
7435 /*
7436  * is_jit_optimizer_disabled:
7437  *
7438  *   Determine whenever M's assembly has a DebuggableAttribute with the
7439  * IsJITOptimizerDisabled flag set.
7440  */
7441 static gboolean
7442 is_jit_optimizer_disabled (MonoMethod *m)
7443 {
7444         MonoAssembly *ass = m->klass->image->assembly;
7445         MonoCustomAttrInfo* attrs;
7446         static MonoClass *klass;
7447         int i;
7448         gboolean val = FALSE;
7449
7450         g_assert (ass);
7451         if (ass->jit_optimizer_disabled_inited)
7452                 return ass->jit_optimizer_disabled;
7453
7454         if (!klass)
7455                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
7456         if (!klass) {
7457                 /* Linked away */
7458                 ass->jit_optimizer_disabled = FALSE;
7459                 mono_memory_barrier ();
7460                 ass->jit_optimizer_disabled_inited = TRUE;
7461                 return FALSE;
7462         }
7463
7464         attrs = mono_custom_attrs_from_assembly (ass);
7465         if (attrs) {
7466                 for (i = 0; i < attrs->num_attrs; ++i) {
7467                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7468                         const gchar *p;
7469                         MonoMethodSignature *sig;
7470
7471                         if (!attr->ctor || attr->ctor->klass != klass)
7472                                 continue;
7473                         /* Decode the attribute. See reflection.c */
7474                         p = (const char*)attr->data;
7475                         g_assert (read16 (p) == 0x0001);
7476                         p += 2;
7477
7478                         // FIXME: Support named parameters
7479                         sig = mono_method_signature (attr->ctor);
7480                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7481                                 continue;
7482                         /* Two boolean arguments */
7483                         p ++;
7484                         val = *p;
7485                 }
7486                 mono_custom_attrs_free (attrs);
7487         }
7488
7489         ass->jit_optimizer_disabled = val;
7490         mono_memory_barrier ();
7491         ass->jit_optimizer_disabled_inited = TRUE;
7492
7493         return val;
7494 }
7495
7496 static gboolean
7497 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7498 {
7499         gboolean supported_tail_call;
7500         int i;
7501
7502 #ifdef MONO_ARCH_HAVE_OP_TAIL_CALL
7503         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7504 #else
7505         supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
7506 #endif
7507
7508         for (i = 0; i < fsig->param_count; ++i) {
7509                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7510                         /* These can point to the current method's stack */
7511                         supported_tail_call = FALSE;
7512         }
7513         if (fsig->hasthis && cmethod->klass->valuetype)
7514                 /* this might point to the current method's stack */
7515                 supported_tail_call = FALSE;
7516         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7517                 supported_tail_call = FALSE;
7518         if (cfg->method->save_lmf)
7519                 supported_tail_call = FALSE;
7520         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7521                 supported_tail_call = FALSE;
7522         if (call_opcode != CEE_CALL)
7523                 supported_tail_call = FALSE;
7524
7525         /* Debugging support */
7526 #if 0
7527         if (supported_tail_call) {
7528                 if (!mono_debug_count ())
7529                         supported_tail_call = FALSE;
7530         }
7531 #endif
7532
7533         return supported_tail_call;
7534 }
7535
7536 /* emits the code needed to access a managed tls var (like ThreadStatic)
7537  * with the value of the tls offset in offset_reg. thread_ins represents the MonoInternalThread
7538  * pointer for the current thread.
7539  * Returns the MonoInst* representing the address of the tls var.
7540  */
7541 static MonoInst*
7542 emit_managed_static_data_access (MonoCompile *cfg, MonoInst *thread_ins, int offset_reg)
7543 {
7544         MonoInst *addr;
7545         int static_data_reg, array_reg, dreg;
7546         int offset2_reg, idx_reg;
7547         // inlined access to the tls data (see threads.c)
7548         static_data_reg = alloc_ireg (cfg);
7549         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
7550         idx_reg = alloc_ireg (cfg);
7551         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
7552         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
7553         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
7554         array_reg = alloc_ireg (cfg);
7555         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
7556         offset2_reg = alloc_ireg (cfg);
7557         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
7558         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
7559         dreg = alloc_ireg (cfg);
7560         EMIT_NEW_BIALU (cfg, addr, OP_PADD, dreg, array_reg, offset2_reg);
7561         return addr;
7562 }
7563
7564 /*
7565  * handle_ctor_call:
7566  *
7567  *   Handle calls made to ctors from NEWOBJ opcodes.
7568  *
7569  *   REF_BBLOCK will point to the current bblock after the call.
7570  */
7571 static void
7572 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7573                                   MonoInst **sp, guint8 *ip, MonoBasicBlock **ref_bblock, int *inline_costs)
7574 {
7575         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7576         MonoBasicBlock *bblock = *ref_bblock;
7577
7578         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7579                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7580                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7581                         mono_class_vtable (cfg->domain, cmethod->klass);
7582                         CHECK_TYPELOAD (cmethod->klass);
7583
7584                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7585                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7586                 } else {
7587                         if (context_used) {
7588                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
7589                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7590                         } else {
7591                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7592
7593                                 CHECK_TYPELOAD (cmethod->klass);
7594                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7595                         }
7596                 }
7597         }
7598
7599         /* Avoid virtual calls to ctors if possible */
7600         if (mono_class_is_marshalbyref (cmethod->klass))
7601                 callvirt_this_arg = sp [0];
7602
7603         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7604                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7605                 CHECK_CFG_EXCEPTION;
7606         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7607                            mono_method_check_inlining (cfg, cmethod) &&
7608                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7609                 int costs;
7610
7611                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE, &bblock))) {
7612                         cfg->real_offset += 5;
7613
7614                         *inline_costs += costs - 5;
7615                         *ref_bblock = bblock;
7616                 } else {
7617                         INLINE_FAILURE ("inline failure");
7618                         // FIXME-VT: Clean this up
7619                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7620                                 GSHAREDVT_FAILURE(*ip);
7621                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7622                 }
7623         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7624                 MonoInst *addr;
7625
7626                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7627                 mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7628         } else if (context_used &&
7629                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7630                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7631                 MonoInst *cmethod_addr;
7632
7633                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7634
7635                 cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7636                                                                                           cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7637
7638                 mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7639         } else {
7640                 INLINE_FAILURE ("ctor call");
7641                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7642                                                                                   callvirt_this_arg, NULL, vtable_arg);
7643         }
7644  exception_exit:
7645         return;
7646 }
7647
7648 /*
7649  * mono_method_to_ir:
7650  *
7651  *   Translate the .net IL into linear IR.
7652  */
7653 int
7654 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7655                    MonoInst *return_var, MonoInst **inline_args,
7656                    guint inline_offset, gboolean is_virtual_call)
7657 {
7658         MonoError error;
7659         MonoInst *ins, **sp, **stack_start;
7660         MonoBasicBlock *bblock, *tblock = NULL, *init_localsbb = NULL;
7661         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7662         MonoMethod *cmethod, *method_definition;
7663         MonoInst **arg_array;
7664         MonoMethodHeader *header;
7665         MonoImage *image;
7666         guint32 token, ins_flag;
7667         MonoClass *klass;
7668         MonoClass *constrained_class = NULL;
7669         unsigned char *ip, *end, *target, *err_pos;
7670         MonoMethodSignature *sig;
7671         MonoGenericContext *generic_context = NULL;
7672         MonoGenericContainer *generic_container = NULL;
7673         MonoType **param_types;
7674         int i, n, start_new_bblock, dreg;
7675         int num_calls = 0, inline_costs = 0;
7676         int breakpoint_id = 0;
7677         guint num_args;
7678         GSList *class_inits = NULL;
7679         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7680         int context_used;
7681         gboolean init_locals, seq_points, skip_dead_blocks;
7682         gboolean sym_seq_points = FALSE;
7683         MonoDebugMethodInfo *minfo;
7684         MonoBitSet *seq_point_locs = NULL;
7685         MonoBitSet *seq_point_set_locs = NULL;
7686
7687         cfg->disable_inline = is_jit_optimizer_disabled (method);
7688
7689         /* serialization and xdomain stuff may need access to private fields and methods */
7690         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7691         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7692         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7693         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7694         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7695         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7696
7697         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7698         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7699         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7700         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7701         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7702
7703         image = method->klass->image;
7704         header = mono_method_get_header (method);
7705         if (!header) {
7706                 MonoLoaderError *error;
7707
7708                 if ((error = mono_loader_get_last_error ())) {
7709                         mono_cfg_set_exception (cfg, error->exception_type);
7710                 } else {
7711                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
7712                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
7713                 }
7714                 goto exception_exit;
7715         }
7716         generic_container = mono_method_get_generic_container (method);
7717         sig = mono_method_signature (method);
7718         num_args = sig->hasthis + sig->param_count;
7719         ip = (unsigned char*)header->code;
7720         cfg->cil_start = ip;
7721         end = ip + header->code_size;
7722         cfg->stat_cil_code_size += header->code_size;
7723
7724         seq_points = cfg->gen_seq_points && cfg->method == method;
7725
7726         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7727                 /* We could hit a seq point before attaching to the JIT (#8338) */
7728                 seq_points = FALSE;
7729         }
7730
7731         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7732                 minfo = mono_debug_lookup_method (method);
7733                 if (minfo) {
7734                         MonoSymSeqPoint *sps;
7735                         int i, n_il_offsets;
7736
7737                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7738                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7739                         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);
7740                         sym_seq_points = TRUE;
7741                         for (i = 0; i < n_il_offsets; ++i) {
7742                                 if (sps [i].il_offset < header->code_size)
7743                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7744                         }
7745                         g_free (sps);
7746                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7747                         /* Methods without line number info like auto-generated property accessors */
7748                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7749                         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);
7750                         sym_seq_points = TRUE;
7751                 }
7752         }
7753
7754         /*
7755          * Methods without init_locals set could cause asserts in various passes
7756          * (#497220). To work around this, we emit dummy initialization opcodes
7757          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7758          * on some platforms.
7759          */
7760         if ((cfg->opt & MONO_OPT_UNSAFE) && ARCH_HAVE_DUMMY_INIT)
7761                 init_locals = header->init_locals;
7762         else
7763                 init_locals = TRUE;
7764
7765         method_definition = method;
7766         while (method_definition->is_inflated) {
7767                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7768                 method_definition = imethod->declaring;
7769         }
7770
7771         /* SkipVerification is not allowed if core-clr is enabled */
7772         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7773                 dont_verify = TRUE;
7774                 dont_verify_stloc = TRUE;
7775         }
7776
7777         if (sig->is_inflated)
7778                 generic_context = mono_method_get_context (method);
7779         else if (generic_container)
7780                 generic_context = &generic_container->context;
7781         cfg->generic_context = generic_context;
7782
7783         if (!cfg->generic_sharing_context)
7784                 g_assert (!sig->has_type_parameters);
7785
7786         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7787                 g_assert (method->is_inflated);
7788                 g_assert (mono_method_get_context (method)->method_inst);
7789         }
7790         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7791                 g_assert (sig->generic_param_count);
7792
7793         if (cfg->method == method) {
7794                 cfg->real_offset = 0;
7795         } else {
7796                 cfg->real_offset = inline_offset;
7797         }
7798
7799         cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7800         cfg->cil_offset_to_bb_len = header->code_size;
7801
7802         cfg->current_method = method;
7803
7804         if (cfg->verbose_level > 2)
7805                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7806
7807         param_types = mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7808         if (sig->hasthis)
7809                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7810         for (n = 0; n < sig->param_count; ++n)
7811                 param_types [n + sig->hasthis] = sig->params [n];
7812         cfg->arg_types = param_types;
7813
7814         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7815         if (cfg->method == method) {
7816
7817                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7818                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7819
7820                 /* ENTRY BLOCK */
7821                 NEW_BBLOCK (cfg, start_bblock);
7822                 cfg->bb_entry = start_bblock;
7823                 start_bblock->cil_code = NULL;
7824                 start_bblock->cil_length = 0;
7825
7826                 /* EXIT BLOCK */
7827                 NEW_BBLOCK (cfg, end_bblock);
7828                 cfg->bb_exit = end_bblock;
7829                 end_bblock->cil_code = NULL;
7830                 end_bblock->cil_length = 0;
7831                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7832                 g_assert (cfg->num_bblocks == 2);
7833
7834                 arg_array = cfg->args;
7835
7836                 if (header->num_clauses) {
7837                         cfg->spvars = g_hash_table_new (NULL, NULL);
7838                         cfg->exvars = g_hash_table_new (NULL, NULL);
7839                 }
7840                 /* handle exception clauses */
7841                 for (i = 0; i < header->num_clauses; ++i) {
7842                         MonoBasicBlock *try_bb;
7843                         MonoExceptionClause *clause = &header->clauses [i];
7844                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7845                         try_bb->real_offset = clause->try_offset;
7846                         try_bb->try_start = TRUE;
7847                         try_bb->region = ((i + 1) << 8) | clause->flags;
7848                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7849                         tblock->real_offset = clause->handler_offset;
7850                         tblock->flags |= BB_EXCEPTION_HANDLER;
7851
7852                         /*
7853                          * Linking the try block with the EH block hinders inlining as we won't be able to
7854                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7855                          */
7856                         if (COMPILE_LLVM (cfg))
7857                                 link_bblock (cfg, try_bb, tblock);
7858
7859                         if (*(ip + clause->handler_offset) == CEE_POP)
7860                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7861
7862                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7863                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7864                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7865                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7866                                 MONO_ADD_INS (tblock, ins);
7867
7868                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY) {
7869                                         /* finally clauses already have a seq point */
7870                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7871                                         MONO_ADD_INS (tblock, ins);
7872                                 }
7873
7874                                 /* todo: is a fault block unsafe to optimize? */
7875                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7876                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7877                         }
7878
7879                         /*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);
7880                           while (p < end) {
7881                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7882                           }*/
7883                         /* catch and filter blocks get the exception object on the stack */
7884                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7885                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7886
7887                                 /* mostly like handle_stack_args (), but just sets the input args */
7888                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7889                                 tblock->in_scount = 1;
7890                                 tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7891                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7892
7893                                 cfg->cbb = tblock;
7894
7895 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7896                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7897                                 if (!cfg->compile_llvm) {
7898                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7899                                         ins->dreg = tblock->in_stack [0]->dreg;
7900                                         MONO_ADD_INS (tblock, ins);
7901                                 }
7902 #else
7903                                 MonoInst *dummy_use;
7904
7905                                 /*
7906                                  * Add a dummy use for the exvar so its liveness info will be
7907                                  * correct.
7908                                  */
7909                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7910 #endif
7911
7912                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7913                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7914                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7915                                         tblock->real_offset = clause->data.filter_offset;
7916                                         tblock->in_scount = 1;
7917                                         tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7918                                         /* The filter block shares the exvar with the handler block */
7919                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7920                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7921                                         MONO_ADD_INS (tblock, ins);
7922                                 }
7923                         }
7924
7925                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7926                                         clause->data.catch_class &&
7927                                         cfg->generic_sharing_context &&
7928                                         mono_class_check_context_used (clause->data.catch_class)) {
7929                                 /*
7930                                  * In shared generic code with catch
7931                                  * clauses containing type variables
7932                                  * the exception handling code has to
7933                                  * be able to get to the rgctx.
7934                                  * Therefore we have to make sure that
7935                                  * the vtable/mrgctx argument (for
7936                                  * static or generic methods) or the
7937                                  * "this" argument (for non-static
7938                                  * methods) are live.
7939                                  */
7940                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7941                                                 mini_method_get_context (method)->method_inst ||
7942                                                 method->klass->valuetype) {
7943                                         mono_get_vtable_var (cfg);
7944                                 } else {
7945                                         MonoInst *dummy_use;
7946
7947                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7948                                 }
7949                         }
7950                 }
7951         } else {
7952                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7953                 cfg->cbb = start_bblock;
7954                 cfg->args = arg_array;
7955                 mono_save_args (cfg, sig, inline_args);
7956         }
7957
7958         /* FIRST CODE BLOCK */
7959         NEW_BBLOCK (cfg, bblock);
7960         bblock->cil_code = ip;
7961         cfg->cbb = bblock;
7962         cfg->ip = ip;
7963
7964         ADD_BBLOCK (cfg, bblock);
7965
7966         if (cfg->method == method) {
7967                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7968                 if (breakpoint_id) {
7969                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7970                         MONO_ADD_INS (bblock, ins);
7971                 }
7972         }
7973
7974         /* we use a separate basic block for the initialization code */
7975         NEW_BBLOCK (cfg, init_localsbb);
7976         cfg->bb_init = init_localsbb;
7977         init_localsbb->real_offset = cfg->real_offset;
7978         start_bblock->next_bb = init_localsbb;
7979         init_localsbb->next_bb = bblock;
7980         link_bblock (cfg, start_bblock, init_localsbb);
7981         link_bblock (cfg, init_localsbb, bblock);
7982
7983         cfg->cbb = init_localsbb;
7984
7985         if (cfg->gsharedvt && cfg->method == method) {
7986                 MonoGSharedVtMethodInfo *info;
7987                 MonoInst *var, *locals_var;
7988                 int dreg;
7989
7990                 info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7991                 info->method = cfg->method;
7992                 info->count_entries = 16;
7993                 info->entries = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7994                 cfg->gsharedvt_info = info;
7995
7996                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7997                 /* prevent it from being register allocated */
7998                 //var->flags |= MONO_INST_VOLATILE;
7999                 cfg->gsharedvt_info_var = var;
8000
8001                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8002                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8003
8004                 /* Allocate locals */
8005                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8006                 /* prevent it from being register allocated */
8007                 //locals_var->flags |= MONO_INST_VOLATILE;
8008                 cfg->gsharedvt_locals_var = locals_var;
8009
8010                 dreg = alloc_ireg (cfg);
8011                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8012
8013                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8014                 ins->dreg = locals_var->dreg;
8015                 ins->sreg1 = dreg;
8016                 MONO_ADD_INS (cfg->cbb, ins);
8017                 cfg->gsharedvt_locals_var_ins = ins;
8018
8019                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8020                 /*
8021                 if (init_locals)
8022                         ins->flags |= MONO_INST_INIT;
8023                 */
8024         }
8025
8026         if (mono_security_core_clr_enabled ()) {
8027                 /* check if this is native code, e.g. an icall or a p/invoke */
8028                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8029                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8030                         if (wrapped) {
8031                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8032                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8033
8034                                 /* if this ia a native call then it can only be JITted from platform code */
8035                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8036                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8037                                                 MonoException *ex = icall ? mono_get_exception_security () :
8038                                                         mono_get_exception_method_access ();
8039                                                 emit_throw_exception (cfg, ex);
8040                                         }
8041                                 }
8042                         }
8043                 }
8044         }
8045
8046         CHECK_CFG_EXCEPTION;
8047
8048         if (header->code_size == 0)
8049                 UNVERIFIED;
8050
8051         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8052                 ip = err_pos;
8053                 UNVERIFIED;
8054         }
8055
8056         if (cfg->method == method)
8057                 mono_debug_init_method (cfg, bblock, breakpoint_id);
8058
8059         for (n = 0; n < header->num_locals; ++n) {
8060                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8061                         UNVERIFIED;
8062         }
8063         class_inits = NULL;
8064
8065         /* We force the vtable variable here for all shared methods
8066            for the possibility that they might show up in a stack
8067            trace where their exact instantiation is needed. */
8068         if (cfg->generic_sharing_context && method == cfg->method) {
8069                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8070                                 mini_method_get_context (method)->method_inst ||
8071                                 method->klass->valuetype) {
8072                         mono_get_vtable_var (cfg);
8073                 } else {
8074                         /* FIXME: Is there a better way to do this?
8075                            We need the variable live for the duration
8076                            of the whole method. */
8077                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8078                 }
8079         }
8080
8081         /* add a check for this != NULL to inlined methods */
8082         if (is_virtual_call) {
8083                 MonoInst *arg_ins;
8084
8085                 NEW_ARGLOAD (cfg, arg_ins, 0);
8086                 MONO_ADD_INS (cfg->cbb, arg_ins);
8087                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8088         }
8089
8090         skip_dead_blocks = !dont_verify;
8091         if (skip_dead_blocks) {
8092                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8093                 CHECK_CFG_ERROR;
8094                 g_assert (bb);
8095         }
8096
8097         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8098         stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8099
8100         ins_flag = 0;
8101         start_new_bblock = 0;
8102         cfg->cbb = bblock;
8103         while (ip < end) {
8104                 if (cfg->method == method)
8105                         cfg->real_offset = ip - header->code;
8106                 else
8107                         cfg->real_offset = inline_offset;
8108                 cfg->ip = ip;
8109
8110                 context_used = 0;
8111
8112                 if (start_new_bblock) {
8113                         bblock->cil_length = ip - bblock->cil_code;
8114                         if (start_new_bblock == 2) {
8115                                 g_assert (ip == tblock->cil_code);
8116                         } else {
8117                                 GET_BBLOCK (cfg, tblock, ip);
8118                         }
8119                         bblock->next_bb = tblock;
8120                         bblock = tblock;
8121                         cfg->cbb = bblock;
8122                         start_new_bblock = 0;
8123                         for (i = 0; i < bblock->in_scount; ++i) {
8124                                 if (cfg->verbose_level > 3)
8125                                         printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8126                                 EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8127                                 *sp++ = ins;
8128                         }
8129                         if (class_inits)
8130                                 g_slist_free (class_inits);
8131                         class_inits = NULL;
8132                 } else {
8133                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != bblock)) {
8134                                 link_bblock (cfg, bblock, tblock);
8135                                 if (sp != stack_start) {
8136                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8137                                         sp = stack_start;
8138                                         CHECK_UNVERIFIABLE (cfg);
8139                                 }
8140                                 bblock->next_bb = tblock;
8141                                 bblock = tblock;
8142                                 cfg->cbb = bblock;
8143                                 for (i = 0; i < bblock->in_scount; ++i) {
8144                                         if (cfg->verbose_level > 3)
8145                                                 printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
8146                                         EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
8147                                         *sp++ = ins;
8148                                 }
8149                                 g_slist_free (class_inits);
8150                                 class_inits = NULL;
8151                         }
8152                 }
8153
8154                 if (skip_dead_blocks) {
8155                         int ip_offset = ip - header->code;
8156
8157                         if (ip_offset == bb->end)
8158                                 bb = bb->next;
8159
8160                         if (bb->dead) {
8161                                 int op_size = mono_opcode_size (ip, end);
8162                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8163
8164                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8165
8166                                 if (ip_offset + op_size == bb->end) {
8167                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8168                                         MONO_ADD_INS (bblock, ins);
8169                                         start_new_bblock = 1;
8170                                 }
8171
8172                                 ip += op_size;
8173                                 continue;
8174                         }
8175                 }
8176                 /*
8177                  * Sequence points are points where the debugger can place a breakpoint.
8178                  * Currently, we generate these automatically at points where the IL
8179                  * stack is empty.
8180                  */
8181                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8182                         /*
8183                          * Make methods interruptable at the beginning, and at the targets of
8184                          * backward branches.
8185                          * Also, do this at the start of every bblock in methods with clauses too,
8186                          * to be able to handle instructions with inprecise control flow like
8187                          * throw/endfinally.
8188                          * Backward branches are handled at the end of method-to-ir ().
8189                          */
8190                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8191
8192                         /* Avoid sequence points on empty IL like .volatile */
8193                         // FIXME: Enable this
8194                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8195                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8196                         if (sp != stack_start)
8197                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8198                         MONO_ADD_INS (cfg->cbb, ins);
8199
8200                         if (sym_seq_points)
8201                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8202                 }
8203
8204                 bblock->real_offset = cfg->real_offset;
8205
8206                 if ((cfg->method == method) && cfg->coverage_info) {
8207                         guint32 cil_offset = ip - header->code;
8208                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8209
8210                         /* TODO: Use an increment here */
8211 #if defined(TARGET_X86)
8212                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8213                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8214                         ins->inst_imm = 1;
8215                         MONO_ADD_INS (cfg->cbb, ins);
8216 #else
8217                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8218                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8219 #endif
8220                 }
8221
8222                 if (cfg->verbose_level > 3)
8223                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8224
8225                 switch (*ip) {
8226                 case CEE_NOP:
8227                         if (seq_points && !sym_seq_points && sp != stack_start) {
8228                                 /*
8229                                  * The C# compiler uses these nops to notify the JIT that it should
8230                                  * insert seq points.
8231                                  */
8232                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8233                                 MONO_ADD_INS (cfg->cbb, ins);
8234                         }
8235                         if (cfg->keep_cil_nops)
8236                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8237                         else
8238                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8239                         ip++;
8240                         MONO_ADD_INS (bblock, ins);
8241                         break;
8242                 case CEE_BREAK:
8243                         if (should_insert_brekpoint (cfg->method)) {
8244                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8245                         } else {
8246                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8247                         }
8248                         ip++;
8249                         MONO_ADD_INS (bblock, ins);
8250                         break;
8251                 case CEE_LDARG_0:
8252                 case CEE_LDARG_1:
8253                 case CEE_LDARG_2:
8254                 case CEE_LDARG_3:
8255                         CHECK_STACK_OVF (1);
8256                         n = (*ip)-CEE_LDARG_0;
8257                         CHECK_ARG (n);
8258                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8259                         ip++;
8260                         *sp++ = ins;
8261                         break;
8262                 case CEE_LDLOC_0:
8263                 case CEE_LDLOC_1:
8264                 case CEE_LDLOC_2:
8265                 case CEE_LDLOC_3:
8266                         CHECK_STACK_OVF (1);
8267                         n = (*ip)-CEE_LDLOC_0;
8268                         CHECK_LOCAL (n);
8269                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8270                         ip++;
8271                         *sp++ = ins;
8272                         break;
8273                 case CEE_STLOC_0:
8274                 case CEE_STLOC_1:
8275                 case CEE_STLOC_2:
8276                 case CEE_STLOC_3: {
8277                         CHECK_STACK (1);
8278                         n = (*ip)-CEE_STLOC_0;
8279                         CHECK_LOCAL (n);
8280                         --sp;
8281                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8282                                 UNVERIFIED;
8283                         emit_stloc_ir (cfg, sp, header, n);
8284                         ++ip;
8285                         inline_costs += 1;
8286                         break;
8287                         }
8288                 case CEE_LDARG_S:
8289                         CHECK_OPSIZE (2);
8290                         CHECK_STACK_OVF (1);
8291                         n = ip [1];
8292                         CHECK_ARG (n);
8293                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8294                         *sp++ = ins;
8295                         ip += 2;
8296                         break;
8297                 case CEE_LDARGA_S:
8298                         CHECK_OPSIZE (2);
8299                         CHECK_STACK_OVF (1);
8300                         n = ip [1];
8301                         CHECK_ARG (n);
8302                         NEW_ARGLOADA (cfg, ins, n);
8303                         MONO_ADD_INS (cfg->cbb, ins);
8304                         *sp++ = ins;
8305                         ip += 2;
8306                         break;
8307                 case CEE_STARG_S:
8308                         CHECK_OPSIZE (2);
8309                         CHECK_STACK (1);
8310                         --sp;
8311                         n = ip [1];
8312                         CHECK_ARG (n);
8313                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8314                                 UNVERIFIED;
8315                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8316                         ip += 2;
8317                         break;
8318                 case CEE_LDLOC_S:
8319                         CHECK_OPSIZE (2);
8320                         CHECK_STACK_OVF (1);
8321                         n = ip [1];
8322                         CHECK_LOCAL (n);
8323                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8324                         *sp++ = ins;
8325                         ip += 2;
8326                         break;
8327                 case CEE_LDLOCA_S: {
8328                         unsigned char *tmp_ip;
8329                         CHECK_OPSIZE (2);
8330                         CHECK_STACK_OVF (1);
8331                         CHECK_LOCAL (ip [1]);
8332
8333                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8334                                 ip = tmp_ip;
8335                                 inline_costs += 1;
8336                                 break;
8337                         }
8338
8339                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8340                         *sp++ = ins;
8341                         ip += 2;
8342                         break;
8343                 }
8344                 case CEE_STLOC_S:
8345                         CHECK_OPSIZE (2);
8346                         CHECK_STACK (1);
8347                         --sp;
8348                         CHECK_LOCAL (ip [1]);
8349                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8350                                 UNVERIFIED;
8351                         emit_stloc_ir (cfg, sp, header, ip [1]);
8352                         ip += 2;
8353                         inline_costs += 1;
8354                         break;
8355                 case CEE_LDNULL:
8356                         CHECK_STACK_OVF (1);
8357                         EMIT_NEW_PCONST (cfg, ins, NULL);
8358                         ins->type = STACK_OBJ;
8359                         ++ip;
8360                         *sp++ = ins;
8361                         break;
8362                 case CEE_LDC_I4_M1:
8363                         CHECK_STACK_OVF (1);
8364                         EMIT_NEW_ICONST (cfg, ins, -1);
8365                         ++ip;
8366                         *sp++ = ins;
8367                         break;
8368                 case CEE_LDC_I4_0:
8369                 case CEE_LDC_I4_1:
8370                 case CEE_LDC_I4_2:
8371                 case CEE_LDC_I4_3:
8372                 case CEE_LDC_I4_4:
8373                 case CEE_LDC_I4_5:
8374                 case CEE_LDC_I4_6:
8375                 case CEE_LDC_I4_7:
8376                 case CEE_LDC_I4_8:
8377                         CHECK_STACK_OVF (1);
8378                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8379                         ++ip;
8380                         *sp++ = ins;
8381                         break;
8382                 case CEE_LDC_I4_S:
8383                         CHECK_OPSIZE (2);
8384                         CHECK_STACK_OVF (1);
8385                         ++ip;
8386                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8387                         ++ip;
8388                         *sp++ = ins;
8389                         break;
8390                 case CEE_LDC_I4:
8391                         CHECK_OPSIZE (5);
8392                         CHECK_STACK_OVF (1);
8393                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8394                         ip += 5;
8395                         *sp++ = ins;
8396                         break;
8397                 case CEE_LDC_I8:
8398                         CHECK_OPSIZE (9);
8399                         CHECK_STACK_OVF (1);
8400                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8401                         ins->type = STACK_I8;
8402                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8403                         ++ip;
8404                         ins->inst_l = (gint64)read64 (ip);
8405                         MONO_ADD_INS (bblock, ins);
8406                         ip += 8;
8407                         *sp++ = ins;
8408                         break;
8409                 case CEE_LDC_R4: {
8410                         float *f;
8411                         gboolean use_aotconst = FALSE;
8412
8413 #ifdef TARGET_POWERPC
8414                         /* FIXME: Clean this up */
8415                         if (cfg->compile_aot)
8416                                 use_aotconst = TRUE;
8417 #endif
8418
8419                         /* FIXME: we should really allocate this only late in the compilation process */
8420                         f = mono_domain_alloc (cfg->domain, sizeof (float));
8421                         CHECK_OPSIZE (5);
8422                         CHECK_STACK_OVF (1);
8423
8424                         if (use_aotconst) {
8425                                 MonoInst *cons;
8426                                 int dreg;
8427
8428                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8429
8430                                 dreg = alloc_freg (cfg);
8431                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8432                                 ins->type = cfg->r4_stack_type;
8433                         } else {
8434                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8435                                 ins->type = cfg->r4_stack_type;
8436                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8437                                 ins->inst_p0 = f;
8438                                 MONO_ADD_INS (bblock, ins);
8439                         }
8440                         ++ip;
8441                         readr4 (ip, f);
8442                         ip += 4;
8443                         *sp++ = ins;
8444                         break;
8445                 }
8446                 case CEE_LDC_R8: {
8447                         double *d;
8448                         gboolean use_aotconst = FALSE;
8449
8450 #ifdef TARGET_POWERPC
8451                         /* FIXME: Clean this up */
8452                         if (cfg->compile_aot)
8453                                 use_aotconst = TRUE;
8454 #endif
8455
8456                         /* FIXME: we should really allocate this only late in the compilation process */
8457                         d = mono_domain_alloc (cfg->domain, sizeof (double));
8458                         CHECK_OPSIZE (9);
8459                         CHECK_STACK_OVF (1);
8460
8461                         if (use_aotconst) {
8462                                 MonoInst *cons;
8463                                 int dreg;
8464
8465                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8466
8467                                 dreg = alloc_freg (cfg);
8468                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8469                                 ins->type = STACK_R8;
8470                         } else {
8471                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8472                                 ins->type = STACK_R8;
8473                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8474                                 ins->inst_p0 = d;
8475                                 MONO_ADD_INS (bblock, ins);
8476                         }
8477                         ++ip;
8478                         readr8 (ip, d);
8479                         ip += 8;
8480                         *sp++ = ins;
8481                         break;
8482                 }
8483                 case CEE_DUP: {
8484                         MonoInst *temp, *store;
8485                         CHECK_STACK (1);
8486                         CHECK_STACK_OVF (1);
8487                         sp--;
8488                         ins = *sp;
8489
8490                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8491                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8492
8493                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8494                         *sp++ = ins;
8495
8496                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8497                         *sp++ = ins;
8498
8499                         ++ip;
8500                         inline_costs += 2;
8501                         break;
8502                 }
8503                 case CEE_POP:
8504                         CHECK_STACK (1);
8505                         ip++;
8506                         --sp;
8507
8508 #ifdef TARGET_X86
8509                         if (sp [0]->type == STACK_R8)
8510                                 /* we need to pop the value from the x86 FP stack */
8511                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8512 #endif
8513                         break;
8514                 case CEE_JMP: {
8515                         MonoCallInst *call;
8516
8517                         INLINE_FAILURE ("jmp");
8518                         GSHAREDVT_FAILURE (*ip);
8519
8520                         CHECK_OPSIZE (5);
8521                         if (stack_start != sp)
8522                                 UNVERIFIED;
8523                         token = read32 (ip + 1);
8524                         /* FIXME: check the signature matches */
8525                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8526
8527                         if (!cmethod || mono_loader_get_last_error ())
8528                                 LOAD_ERROR;
8529
8530                         if (cfg->generic_sharing_context && mono_method_check_context_used (cmethod))
8531                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8532
8533                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8534
8535                         if (ARCH_HAVE_OP_TAIL_CALL) {
8536                                 MonoMethodSignature *fsig = mono_method_signature (cmethod);
8537                                 int i, n;
8538
8539                                 /* Handle tail calls similarly to calls */
8540                                 n = fsig->param_count + fsig->hasthis;
8541
8542                                 DISABLE_AOT (cfg);
8543
8544                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8545                                 call->method = cmethod;
8546                                 call->tail_call = TRUE;
8547                                 call->signature = mono_method_signature (cmethod);
8548                                 call->args = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8549                                 call->inst.inst_p0 = cmethod;
8550                                 for (i = 0; i < n; ++i)
8551                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8552
8553                                 mono_arch_emit_call (cfg, call);
8554                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8555                                 MONO_ADD_INS (bblock, (MonoInst*)call);
8556                         } else {
8557                                 for (i = 0; i < num_args; ++i)
8558                                         /* Prevent arguments from being optimized away */
8559                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8560
8561                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8562                                 ins = (MonoInst*)call;
8563                                 ins->inst_p0 = cmethod;
8564                                 MONO_ADD_INS (bblock, ins);
8565                         }
8566
8567                         ip += 5;
8568                         start_new_bblock = 1;
8569                         break;
8570                 }
8571                 case CEE_CALLI: {
8572                         MonoInst *addr;
8573                         MonoMethodSignature *fsig;
8574
8575                         CHECK_OPSIZE (5);
8576                         token = read32 (ip + 1);
8577
8578                         ins = NULL;
8579
8580                         //GSHAREDVT_FAILURE (*ip);
8581                         cmethod = NULL;
8582                         CHECK_STACK (1);
8583                         --sp;
8584                         addr = *sp;
8585                         fsig = mini_get_signature (method, token, generic_context);
8586
8587                         if (method->dynamic && fsig->pinvoke) {
8588                                 MonoInst *args [3];
8589
8590                                 /*
8591                                  * This is a call through a function pointer using a pinvoke
8592                                  * signature. Have to create a wrapper and call that instead.
8593                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8594                                  * instead based on the signature.
8595                                  */
8596                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8597                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8598                                 args [2] = addr;
8599                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8600                         }
8601
8602                         n = fsig->param_count + fsig->hasthis;
8603
8604                         CHECK_STACK (n);
8605
8606                         //g_assert (!virtual || fsig->hasthis);
8607
8608                         sp -= n;
8609
8610                         inline_costs += 10 * num_calls++;
8611
8612                         /*
8613                          * Making generic calls out of gsharedvt methods.
8614                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8615                          * patching gshared method addresses into a gsharedvt method.
8616                          */
8617                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
8618                                 /*
8619                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8620                                  */
8621                                 MonoInst *callee = addr;
8622
8623                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8624                                         /* Not tested */
8625                                         GSHAREDVT_FAILURE (*ip);
8626
8627                                 addr = emit_get_rgctx_sig (cfg, context_used,
8628                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8629                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8630                                 goto calli_end;
8631                         }
8632
8633                         /* Prevent inlining of methods with indirect calls */
8634                         INLINE_FAILURE ("indirect call");
8635
8636                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8637                                 int info_type;
8638                                 gpointer info_data;
8639
8640                                 /*
8641                                  * Instead of emitting an indirect call, emit a direct call
8642                                  * with the contents of the aotconst as the patch info.
8643                                  */
8644                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8645                                         info_type = addr->inst_c1;
8646                                         info_data = addr->inst_p0;
8647                                 } else {
8648                                         info_type = addr->inst_right->inst_c1;
8649                                         info_data = addr->inst_right->inst_left;
8650                                 }
8651
8652                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8653                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8654                                         NULLIFY_INS (addr);
8655                                         goto calli_end;
8656                                 }
8657                         }
8658                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8659
8660                         calli_end:
8661
8662                         /* End of call, INS should contain the result of the call, if any */
8663
8664                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8665                                 g_assert (ins);
8666                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8667                         }
8668
8669                         CHECK_CFG_EXCEPTION;
8670
8671                         ip += 5;
8672                         ins_flag = 0;
8673                         constrained_class = NULL;
8674                         break;
8675                 }
8676                 case CEE_CALL:
8677                 case CEE_CALLVIRT: {
8678                         MonoInst *addr = NULL;
8679                         MonoMethodSignature *fsig = NULL;
8680                         int array_rank = 0;
8681                         int virtual = *ip == CEE_CALLVIRT;
8682                         gboolean pass_imt_from_rgctx = FALSE;
8683                         MonoInst *imt_arg = NULL;
8684                         MonoInst *keep_this_alive = NULL;
8685                         gboolean pass_vtable = FALSE;
8686                         gboolean pass_mrgctx = FALSE;
8687                         MonoInst *vtable_arg = NULL;
8688                         gboolean check_this = FALSE;
8689                         gboolean supported_tail_call = FALSE;
8690                         gboolean tail_call = FALSE;
8691                         gboolean need_seq_point = FALSE;
8692                         guint32 call_opcode = *ip;
8693                         gboolean emit_widen = TRUE;
8694                         gboolean push_res = TRUE;
8695                         gboolean skip_ret = FALSE;
8696                         gboolean delegate_invoke = FALSE;
8697                         gboolean direct_icall = FALSE;
8698                         gboolean constrained_partial_call = FALSE;
8699                         MonoMethod *cil_method;
8700
8701                         CHECK_OPSIZE (5);
8702                         token = read32 (ip + 1);
8703
8704                         ins = NULL;
8705
8706                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8707                         cil_method = cmethod;
8708
8709                         if (constrained_class) {
8710                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
8711                                         if (!mini_is_gsharedvt_klass (cfg, constrained_class)) {
8712                                                 g_assert (!cmethod->klass->valuetype);
8713                                                 if (!mini_type_is_reference (cfg, &constrained_class->byval_arg))
8714                                                         constrained_partial_call = TRUE;
8715                                         }
8716                                 }
8717
8718                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8719                                         if (cfg->verbose_level > 2)
8720                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8721                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8722                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8723                                                   cfg->generic_sharing_context)) {
8724                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8725                                                 CHECK_CFG_ERROR;
8726                                         }
8727                                 } else {
8728                                         if (cfg->verbose_level > 2)
8729                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8730
8731                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
8732                                                 /*
8733                                                  * This is needed since get_method_constrained can't find
8734                                                  * the method in klass representing a type var.
8735                                                  * The type var is guaranteed to be a reference type in this
8736                                                  * case.
8737                                                  */
8738                                                 if (!mini_is_gsharedvt_klass (cfg, constrained_class))
8739                                                         g_assert (!cmethod->klass->valuetype);
8740                                         } else {
8741                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8742                                                 CHECK_CFG_ERROR;
8743                                         }
8744                                 }
8745                         }
8746
8747                         if (!cmethod || mono_loader_get_last_error ())
8748                                 LOAD_ERROR;
8749                         if (!dont_verify && !cfg->skip_visibility) {
8750                                 MonoMethod *target_method = cil_method;
8751                                 if (method->is_inflated) {
8752                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
8753                                 }
8754                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8755                                         !mono_method_can_access_method (method, cil_method))
8756                                         METHOD_ACCESS_FAILURE (method, cil_method);
8757                         }
8758
8759                         if (mono_security_core_clr_enabled ())
8760                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method, bblock, ip);
8761
8762                         if (!virtual && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8763                                 /* MS.NET seems to silently convert this to a callvirt */
8764                                 virtual = 1;
8765
8766                         {
8767                                 /*
8768                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8769                                  * converts to a callvirt.
8770                                  *
8771                                  * tests/bug-515884.il is an example of this behavior
8772                                  */
8773                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8774                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8775                                 if (!virtual && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8776                                         virtual = 1;
8777                         }
8778
8779                         if (!cmethod->klass->inited)
8780                                 if (!mono_class_init (cmethod->klass))
8781                                         TYPE_LOAD_ERROR (cmethod->klass);
8782
8783                         fsig = mono_method_signature (cmethod);
8784                         if (!fsig)
8785                                 LOAD_ERROR;
8786                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8787                                 mini_class_is_system_array (cmethod->klass)) {
8788                                 array_rank = cmethod->klass->rank;
8789                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8790                                 direct_icall = TRUE;
8791                         } else if (fsig->pinvoke) {
8792                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod,
8793                                                                                                                                            check_for_pending_exc, cfg->compile_aot);
8794                                 fsig = mono_method_signature (wrapper);
8795                         } else if (constrained_class) {
8796                         } else {
8797                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8798                                 CHECK_CFG_ERROR;
8799                         }
8800
8801                         mono_save_token_info (cfg, image, token, cil_method);
8802
8803                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8804                                 need_seq_point = TRUE;
8805
8806                         /* Don't support calls made using type arguments for now */
8807                         /*
8808                           if (cfg->gsharedvt) {
8809                           if (mini_is_gsharedvt_signature (cfg, fsig))
8810                           GSHAREDVT_FAILURE (*ip);
8811                           }
8812                         */
8813
8814                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8815                                 g_assert_not_reached ();
8816
8817                         n = fsig->param_count + fsig->hasthis;
8818
8819                         if (!cfg->generic_sharing_context && cmethod->klass->generic_container)
8820                                 UNVERIFIED;
8821
8822                         if (!cfg->generic_sharing_context)
8823                                 g_assert (!mono_method_check_context_used (cmethod));
8824
8825                         CHECK_STACK (n);
8826
8827                         //g_assert (!virtual || fsig->hasthis);
8828
8829                         sp -= n;
8830
8831                         if (constrained_class) {
8832                                 if (mini_is_gsharedvt_klass (cfg, constrained_class)) {
8833                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8834                                                 /* The 'Own method' case below */
8835                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
8836                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8837                                         } else {
8838                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen, &bblock);
8839                                                 CHECK_CFG_EXCEPTION;
8840                                                 g_assert (ins);
8841                                                 goto call_end;
8842                                         }
8843                                 }
8844
8845                                 /*
8846                                  * We have the `constrained.' prefix opcode.
8847                                  */
8848                                 if (constrained_partial_call) {
8849                                         gboolean need_box = TRUE;
8850
8851                                         /*
8852                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8853                                          * called method is not known at compile time either. The called method could end up being
8854                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8855                                          * to box the receiver.
8856                                          * A simple solution would be to box always and make a normal virtual call, but that would
8857                                          * be bad performance wise.
8858                                          */
8859                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
8860                                                 /*
8861                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8862                                                  */
8863                                                 need_box = FALSE;
8864                                         }
8865
8866                                         if (need_box) {
8867                                                 MonoInst *box_type;
8868                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8869                                                 MonoInst *nonbox_call;
8870
8871                                                 /*
8872                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8873                                                  * if needed.
8874                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8875                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8876                                                  */
8877                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8878
8879                                                 NEW_BBLOCK (cfg, is_ref_bb);
8880                                                 NEW_BBLOCK (cfg, end_bb);
8881
8882                                                 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);
8883                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, 1);
8884                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8885
8886                                                 /* Non-ref case */
8887                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8888
8889                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8890
8891                                                 /* Ref case */
8892                                                 MONO_START_BB (cfg, is_ref_bb);
8893                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8894                                                 ins->klass = constrained_class;
8895                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8896                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8897
8898                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8899
8900                                                 MONO_START_BB (cfg, end_bb);
8901                                                 bblock = end_bb;
8902
8903                                                 nonbox_call->dreg = ins->dreg;
8904                                         } else {
8905                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
8906                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8907                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8908                                         }
8909                                         goto call_end;
8910                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8911                                         /*
8912                                          * The type parameter is instantiated as a valuetype,
8913                                          * but that type doesn't override the method we're
8914                                          * calling, so we need to box `this'.
8915                                          */
8916                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8917                                         ins->klass = constrained_class;
8918                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8919                                         CHECK_CFG_EXCEPTION;
8920                                 } else if (!constrained_class->valuetype) {
8921                                         int dreg = alloc_ireg_ref (cfg);
8922
8923                                         /*
8924                                          * The type parameter is instantiated as a reference
8925                                          * type.  We have a managed pointer on the stack, so
8926                                          * we need to dereference it here.
8927                                          */
8928                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8929                                         ins->type = STACK_OBJ;
8930                                         sp [0] = ins;
8931                                 } else {
8932                                         if (cmethod->klass->valuetype) {
8933                                                 /* Own method */
8934                                         } else {
8935                                                 /* Interface method */
8936                                                 int ioffset, slot;
8937
8938                                                 mono_class_setup_vtable (constrained_class);
8939                                                 CHECK_TYPELOAD (constrained_class);
8940                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8941                                                 if (ioffset == -1)
8942                                                         TYPE_LOAD_ERROR (constrained_class);
8943                                                 slot = mono_method_get_vtable_slot (cmethod);
8944                                                 if (slot == -1)
8945                                                         TYPE_LOAD_ERROR (cmethod->klass);
8946                                                 cmethod = constrained_class->vtable [ioffset + slot];
8947
8948                                                 if (cmethod->klass == mono_defaults.enum_class) {
8949                                                         /* Enum implements some interfaces, so treat this as the first case */
8950                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8951                                                         ins->klass = constrained_class;
8952                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class), &bblock);
8953                                                         CHECK_CFG_EXCEPTION;
8954                                                 }
8955                                         }
8956                                         virtual = 0;
8957                                 }
8958                                 constrained_class = NULL;
8959                         }
8960
8961                         if (check_call_signature (cfg, fsig, sp))
8962                                 UNVERIFIED;
8963
8964                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8965                                 delegate_invoke = TRUE;
8966
8967                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8968                                 bblock = cfg->cbb;
8969                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8970                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8971                                         emit_widen = FALSE;
8972                                 }
8973
8974                                 goto call_end;
8975                         }
8976
8977                         /*
8978                          * If the callee is a shared method, then its static cctor
8979                          * might not get called after the call was patched.
8980                          */
8981                         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)) {
8982                                 emit_generic_class_init (cfg, cmethod->klass, &bblock);
8983                                 CHECK_TYPELOAD (cmethod->klass);
8984                         }
8985
8986                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8987
8988                         if (cfg->generic_sharing_context) {
8989                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8990
8991                                 context_used = mini_method_check_context_used (cfg, cmethod);
8992
8993                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8994                                         /* Generic method interface
8995                                            calls are resolved via a
8996                                            helper function and don't
8997                                            need an imt. */
8998                                         if (!cmethod_context || !cmethod_context->method_inst)
8999                                                 pass_imt_from_rgctx = TRUE;
9000                                 }
9001
9002                                 /*
9003                                  * If a shared method calls another
9004                                  * shared method then the caller must
9005                                  * have a generic sharing context
9006                                  * because the magic trampoline
9007                                  * requires it.  FIXME: We shouldn't
9008                                  * have to force the vtable/mrgctx
9009                                  * variable here.  Instead there
9010                                  * should be a flag in the cfg to
9011                                  * request a generic sharing context.
9012                                  */
9013                                 if (context_used &&
9014                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9015                                         mono_get_vtable_var (cfg);
9016                         }
9017
9018                         if (pass_vtable) {
9019                                 if (context_used) {
9020                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9021                                 } else {
9022                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9023
9024                                         CHECK_TYPELOAD (cmethod->klass);
9025                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9026                                 }
9027                         }
9028
9029                         if (pass_mrgctx) {
9030                                 g_assert (!vtable_arg);
9031
9032                                 if (!cfg->compile_aot) {
9033                                         /*
9034                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9035                                          * for type load errors before.
9036                                          */
9037                                         mono_class_setup_vtable (cmethod->klass);
9038                                         CHECK_TYPELOAD (cmethod->klass);
9039                                 }
9040
9041                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9042
9043                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9044                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9045                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9046                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9047                                         if (virtual)
9048                                                 check_this = TRUE;
9049                                         virtual = 0;
9050                                 }
9051                         }
9052
9053                         if (pass_imt_from_rgctx) {
9054                                 g_assert (!pass_vtable);
9055
9056                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9057                                         cmethod, MONO_RGCTX_INFO_METHOD);
9058                         }
9059
9060                         if (check_this)
9061                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9062
9063                         /* Calling virtual generic methods */
9064                         if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9065                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9066                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9067                             fsig->generic_param_count &&
9068                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))) {
9069                                 MonoInst *this_temp, *this_arg_temp, *store;
9070                                 MonoInst *iargs [4];
9071                                 gboolean use_imt = FALSE;
9072
9073                                 g_assert (fsig->is_inflated);
9074
9075                                 /* Prevent inlining of methods that contain indirect calls */
9076                                 INLINE_FAILURE ("virtual generic call");
9077
9078                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
9079                                         GSHAREDVT_FAILURE (*ip);
9080
9081 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
9082                                 if (cmethod->wrapper_type == MONO_WRAPPER_NONE)
9083                                         use_imt = TRUE;
9084 #endif
9085
9086                                 if (use_imt) {
9087                                         g_assert (!imt_arg);
9088                                         if (!context_used)
9089                                                 g_assert (cmethod->is_inflated);
9090                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9091                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9092                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9093                                 } else {
9094                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9095                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9096                                         MONO_ADD_INS (bblock, store);
9097
9098                                         /* FIXME: This should be a managed pointer */
9099                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9100
9101                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9102                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9103                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9104                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9105                                         addr = mono_emit_jit_icall (cfg,
9106                                                                                                 mono_helper_compile_generic_method, iargs);
9107
9108                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9109
9110                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9111                                 }
9112
9113                                 goto call_end;
9114                         }
9115
9116                         /*
9117                          * Implement a workaround for the inherent races involved in locking:
9118                          * Monitor.Enter ()
9119                          * try {
9120                          * } finally {
9121                          *    Monitor.Exit ()
9122                          * }
9123                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9124                          * try block, the Exit () won't be executed, see:
9125                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9126                          * To work around this, we extend such try blocks to include the last x bytes
9127                          * of the Monitor.Enter () call.
9128                          */
9129                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9130                                 MonoBasicBlock *tbb;
9131
9132                                 GET_BBLOCK (cfg, tbb, ip + 5);
9133                                 /*
9134                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9135                                  * from Monitor.Enter like ArgumentNullException.
9136                                  */
9137                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9138                                         /* Mark this bblock as needing to be extended */
9139                                         tbb->extend_try_block = TRUE;
9140                                 }
9141                         }
9142
9143                         /* Conversion to a JIT intrinsic */
9144                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9145                                 bblock = cfg->cbb;
9146                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9147                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9148                                         emit_widen = FALSE;
9149                                 }
9150                                 goto call_end;
9151                         }
9152
9153                         /* Inlining */
9154                         if ((cfg->opt & MONO_OPT_INLINE) &&
9155                                 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9156                             mono_method_check_inlining (cfg, cmethod)) {
9157                                 int costs;
9158                                 gboolean always = FALSE;
9159
9160                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9161                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9162                                         /* Prevent inlining of methods that call wrappers */
9163                                         INLINE_FAILURE ("wrapper call");
9164                                         cmethod = mono_marshal_get_native_wrapper (cmethod, check_for_pending_exc, FALSE);
9165                                         always = TRUE;
9166                                 }
9167
9168                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always, &bblock);
9169                                 if (costs) {
9170                                         cfg->real_offset += 5;
9171
9172                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9173                                                 /* *sp is already set by inline_method */
9174                                                 sp++;
9175                                                 push_res = FALSE;
9176                                         }
9177
9178                                         inline_costs += costs;
9179
9180                                         goto call_end;
9181                                 }
9182                         }
9183
9184                         /* Tail recursion elimination */
9185                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9186                                 gboolean has_vtargs = FALSE;
9187                                 int i;
9188
9189                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9190                                 INLINE_FAILURE ("tail call");
9191
9192                                 /* keep it simple */
9193                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9194                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9195                                                 has_vtargs = TRUE;
9196                                 }
9197
9198                                 if (!has_vtargs) {
9199                                         for (i = 0; i < n; ++i)
9200                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9201                                         MONO_INST_NEW (cfg, ins, OP_BR);
9202                                         MONO_ADD_INS (bblock, ins);
9203                                         tblock = start_bblock->out_bb [0];
9204                                         link_bblock (cfg, bblock, tblock);
9205                                         ins->inst_target_bb = tblock;
9206                                         start_new_bblock = 1;
9207
9208                                         /* skip the CEE_RET, too */
9209                                         if (ip_in_bb (cfg, bblock, ip + 5))
9210                                                 skip_ret = TRUE;
9211                                         push_res = FALSE;
9212                                         goto call_end;
9213                                 }
9214                         }
9215
9216                         inline_costs += 10 * num_calls++;
9217
9218                         /*
9219                          * Making generic calls out of gsharedvt methods.
9220                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9221                          * patching gshared method addresses into a gsharedvt method.
9222                          */
9223                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (cfg, fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9224                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY)) {
9225                                 MonoRgctxInfoType info_type;
9226
9227                                 if (virtual) {
9228                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9229                                                 //GSHAREDVT_FAILURE (*ip);
9230                                         // disable for possible remoting calls
9231                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9232                                                 GSHAREDVT_FAILURE (*ip);
9233                                         if (fsig->generic_param_count) {
9234                                                 /* virtual generic call */
9235                                                 g_assert (!imt_arg);
9236                                                 /* Same as the virtual generic case above */
9237                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9238                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9239                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9240                                                 vtable_arg = NULL;
9241                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9242                                                 /* This can happen when we call a fully instantiated iface method */
9243                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9244                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9245                                                 vtable_arg = NULL;
9246                                         }
9247                                 }
9248
9249                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9250                                         keep_this_alive = sp [0];
9251
9252                                 if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9253                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9254                                 else
9255                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9256                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9257
9258                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9259                                 goto call_end;
9260                         }
9261
9262                         /* Generic sharing */
9263
9264                         /*
9265                          * Use this if the callee is gsharedvt sharable too, since
9266                          * at runtime we might find an instantiation so the call cannot
9267                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9268                          */
9269                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9270                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9271                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9272                                 (!virtual || MONO_METHOD_IS_FINAL (cmethod) ||
9273                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9274                                 INLINE_FAILURE ("gshared");
9275
9276                                 g_assert (cfg->generic_sharing_context && cmethod);
9277                                 g_assert (!addr);
9278
9279                                 /*
9280                                  * We are compiling a call to a
9281                                  * generic method from shared code,
9282                                  * which means that we have to look up
9283                                  * the method in the rgctx and do an
9284                                  * indirect call.
9285                                  */
9286                                 if (fsig->hasthis)
9287                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9288
9289                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9290                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9291                                 goto call_end;
9292                         }
9293
9294                         /* Direct calls to icalls */
9295                         if (direct_icall) {
9296                                 MonoMethod *wrapper;
9297                                 int costs;
9298
9299                                 /* Inline the wrapper */
9300                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9301
9302                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE, &bblock);
9303                                 g_assert (costs > 0);
9304                                 cfg->real_offset += 5;
9305
9306                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9307                                         /* *sp is already set by inline_method */
9308                                         sp++;
9309                                         push_res = FALSE;
9310                                 }
9311
9312                                 inline_costs += costs;
9313
9314                                 goto call_end;
9315                         }
9316
9317                         /* Array methods */
9318                         if (array_rank) {
9319                                 MonoInst *addr;
9320
9321                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9322                                         MonoInst *val = sp [fsig->param_count];
9323
9324                                         if (val->type == STACK_OBJ) {
9325                                                 MonoInst *iargs [2];
9326
9327                                                 iargs [0] = sp [0];
9328                                                 iargs [1] = val;
9329
9330                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9331                                         }
9332
9333                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9334                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9335                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9336                                                 emit_write_barrier (cfg, addr, val);
9337                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cfg, cmethod->klass))
9338                                                 GSHAREDVT_FAILURE (*ip);
9339                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9340                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9341
9342                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9343                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9344                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9345                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9346                                         CHECK_TYPELOAD (cmethod->klass);
9347
9348                                         readonly = FALSE;
9349                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9350                                         ins = addr;
9351                                 } else {
9352                                         g_assert_not_reached ();
9353                                 }
9354
9355                                 emit_widen = FALSE;
9356                                 goto call_end;
9357                         }
9358
9359                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL);
9360                         if (ins)
9361                                 goto call_end;
9362
9363                         /* Tail prefix / tail call optimization */
9364
9365                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9366                         /* FIXME: runtime generic context pointer for jumps? */
9367                         /* FIXME: handle this for generic sharing eventually */
9368                         if ((ins_flag & MONO_INST_TAILCALL) &&
9369                                 !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9370                                 supported_tail_call = TRUE;
9371
9372                         if (supported_tail_call) {
9373                                 MonoCallInst *call;
9374
9375                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9376                                 INLINE_FAILURE ("tail call");
9377
9378                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9379
9380                                 if (ARCH_HAVE_OP_TAIL_CALL) {
9381                                         /* Handle tail calls similarly to normal calls */
9382                                         tail_call = TRUE;
9383                                 } else {
9384                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9385
9386                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9387                                         call->tail_call = TRUE;
9388                                         call->method = cmethod;
9389                                         call->signature = mono_method_signature (cmethod);
9390
9391                                         /*
9392                                          * We implement tail calls by storing the actual arguments into the
9393                                          * argument variables, then emitting a CEE_JMP.
9394                                          */
9395                                         for (i = 0; i < n; ++i) {
9396                                                 /* Prevent argument from being register allocated */
9397                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9398                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9399                                         }
9400                                         ins = (MonoInst*)call;
9401                                         ins->inst_p0 = cmethod;
9402                                         ins->inst_p1 = arg_array [0];
9403                                         MONO_ADD_INS (bblock, ins);
9404                                         link_bblock (cfg, bblock, end_bblock);
9405                                         start_new_bblock = 1;
9406
9407                                         // FIXME: Eliminate unreachable epilogs
9408
9409                                         /*
9410                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9411                                          * only reachable from this call.
9412                                          */
9413                                         GET_BBLOCK (cfg, tblock, ip + 5);
9414                                         if (tblock == bblock || tblock->in_count == 0)
9415                                                 skip_ret = TRUE;
9416                                         push_res = FALSE;
9417
9418                                         goto call_end;
9419                                 }
9420                         }
9421
9422                         /*
9423                          * Synchronized wrappers.
9424                          * Its hard to determine where to replace a method with its synchronized
9425                          * wrapper without causing an infinite recursion. The current solution is
9426                          * to add the synchronized wrapper in the trampolines, and to
9427                          * change the called method to a dummy wrapper, and resolve that wrapper
9428                          * to the real method in mono_jit_compile_method ().
9429                          */
9430                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9431                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9432                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9433                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9434                         }
9435
9436                         /* Common call */
9437                         INLINE_FAILURE ("call");
9438                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual ? sp [0] : NULL,
9439                                                                                           imt_arg, vtable_arg);
9440
9441                         if (tail_call) {
9442                                 link_bblock (cfg, bblock, end_bblock);
9443                                 start_new_bblock = 1;
9444
9445                                 // FIXME: Eliminate unreachable epilogs
9446
9447                                 /*
9448                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9449                                  * only reachable from this call.
9450                                  */
9451                                 GET_BBLOCK (cfg, tblock, ip + 5);
9452                                 if (tblock == bblock || tblock->in_count == 0)
9453                                         skip_ret = TRUE;
9454                                 push_res = FALSE;
9455                         }
9456
9457                         call_end:
9458
9459                         /* End of call, INS should contain the result of the call, if any */
9460
9461                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9462                                 g_assert (ins);
9463                                 if (emit_widen)
9464                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9465                                 else
9466                                         *sp++ = ins;
9467                         }
9468
9469                         if (keep_this_alive) {
9470                                 MonoInst *dummy_use;
9471
9472                                 /* See mono_emit_method_call_full () */
9473                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9474                         }
9475
9476                         CHECK_CFG_EXCEPTION;
9477
9478                         ip += 5;
9479                         if (skip_ret) {
9480                                 g_assert (*ip == CEE_RET);
9481                                 ip += 1;
9482                         }
9483                         ins_flag = 0;
9484                         constrained_class = NULL;
9485                         if (need_seq_point)
9486                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9487                         break;
9488                 }
9489                 case CEE_RET:
9490                         if (cfg->method != method) {
9491                                 /* return from inlined method */
9492                                 /*
9493                                  * If in_count == 0, that means the ret is unreachable due to
9494                                  * being preceeded by a throw. In that case, inline_method () will
9495                                  * handle setting the return value
9496                                  * (test case: test_0_inline_throw ()).
9497                                  */
9498                                 if (return_var && cfg->cbb->in_count) {
9499                                         MonoType *ret_type = mono_method_signature (method)->ret;
9500
9501                                         MonoInst *store;
9502                                         CHECK_STACK (1);
9503                                         --sp;
9504
9505                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9506                                                 UNVERIFIED;
9507
9508                                         //g_assert (returnvar != -1);
9509                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9510                                         cfg->ret_var_set = TRUE;
9511                                 }
9512                         } else {
9513                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9514
9515                                 if (cfg->lmf_var && cfg->cbb->in_count)
9516                                         emit_pop_lmf (cfg);
9517
9518                                 if (cfg->ret) {
9519                                         MonoType *ret_type = mini_get_underlying_type (cfg, mono_method_signature (method)->ret);
9520
9521                                         if (seq_points && !sym_seq_points) {
9522                                                 /*
9523                                                  * Place a seq point here too even through the IL stack is not
9524                                                  * empty, so a step over on
9525                                                  * call <FOO>
9526                                                  * ret
9527                                                  * will work correctly.
9528                                                  */
9529                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9530                                                 MONO_ADD_INS (cfg->cbb, ins);
9531                                         }
9532
9533                                         g_assert (!return_var);
9534                                         CHECK_STACK (1);
9535                                         --sp;
9536
9537                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9538                                                 UNVERIFIED;
9539
9540                                         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
9541                                                 MonoInst *ret_addr;
9542
9543                                                 if (!cfg->vret_addr) {
9544                                                         MonoInst *ins;
9545
9546                                                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, (*sp));
9547                                                 } else {
9548                                                         EMIT_NEW_RETLOADA (cfg, ret_addr);
9549
9550                                                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, (*sp)->dreg);
9551                                                         ins->klass = mono_class_from_mono_type (ret_type);
9552                                                 }
9553                                         } else {
9554 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
9555                                                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
9556                                                         MonoInst *iargs [1];
9557                                                         MonoInst *conv;
9558
9559                                                         iargs [0] = *sp;
9560                                                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
9561                                                         mono_arch_emit_setret (cfg, method, conv);
9562                                                 } else {
9563                                                         mono_arch_emit_setret (cfg, method, *sp);
9564                                                 }
9565 #else
9566                                                 mono_arch_emit_setret (cfg, method, *sp);
9567 #endif
9568                                         }
9569                                 }
9570                         }
9571                         if (sp != stack_start)
9572                                 UNVERIFIED;
9573                         MONO_INST_NEW (cfg, ins, OP_BR);
9574                         ip++;
9575                         ins->inst_target_bb = end_bblock;
9576                         MONO_ADD_INS (bblock, ins);
9577                         link_bblock (cfg, bblock, end_bblock);
9578                         start_new_bblock = 1;
9579                         break;
9580                 case CEE_BR_S:
9581                         CHECK_OPSIZE (2);
9582                         MONO_INST_NEW (cfg, ins, OP_BR);
9583                         ip++;
9584                         target = ip + 1 + (signed char)(*ip);
9585                         ++ip;
9586                         GET_BBLOCK (cfg, tblock, target);
9587                         link_bblock (cfg, bblock, tblock);
9588                         ins->inst_target_bb = tblock;
9589                         if (sp != stack_start) {
9590                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9591                                 sp = stack_start;
9592                                 CHECK_UNVERIFIABLE (cfg);
9593                         }
9594                         MONO_ADD_INS (bblock, ins);
9595                         start_new_bblock = 1;
9596                         inline_costs += BRANCH_COST;
9597                         break;
9598                 case CEE_BEQ_S:
9599                 case CEE_BGE_S:
9600                 case CEE_BGT_S:
9601                 case CEE_BLE_S:
9602                 case CEE_BLT_S:
9603                 case CEE_BNE_UN_S:
9604                 case CEE_BGE_UN_S:
9605                 case CEE_BGT_UN_S:
9606                 case CEE_BLE_UN_S:
9607                 case CEE_BLT_UN_S:
9608                         CHECK_OPSIZE (2);
9609                         CHECK_STACK (2);
9610                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9611                         ip++;
9612                         target = ip + 1 + *(signed char*)ip;
9613                         ip++;
9614
9615                         ADD_BINCOND (NULL);
9616
9617                         sp = stack_start;
9618                         inline_costs += BRANCH_COST;
9619                         break;
9620                 case CEE_BR:
9621                         CHECK_OPSIZE (5);
9622                         MONO_INST_NEW (cfg, ins, OP_BR);
9623                         ip++;
9624
9625                         target = ip + 4 + (gint32)read32(ip);
9626                         ip += 4;
9627                         GET_BBLOCK (cfg, tblock, target);
9628                         link_bblock (cfg, bblock, tblock);
9629                         ins->inst_target_bb = tblock;
9630                         if (sp != stack_start) {
9631                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9632                                 sp = stack_start;
9633                                 CHECK_UNVERIFIABLE (cfg);
9634                         }
9635
9636                         MONO_ADD_INS (bblock, ins);
9637
9638                         start_new_bblock = 1;
9639                         inline_costs += BRANCH_COST;
9640                         break;
9641                 case CEE_BRFALSE_S:
9642                 case CEE_BRTRUE_S:
9643                 case CEE_BRFALSE:
9644                 case CEE_BRTRUE: {
9645                         MonoInst *cmp;
9646                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9647                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9648                         guint32 opsize = is_short ? 1 : 4;
9649
9650                         CHECK_OPSIZE (opsize);
9651                         CHECK_STACK (1);
9652                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9653                                 UNVERIFIED;
9654                         ip ++;
9655                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9656                         ip += opsize;
9657
9658                         sp--;
9659
9660                         GET_BBLOCK (cfg, tblock, target);
9661                         link_bblock (cfg, bblock, tblock);
9662                         GET_BBLOCK (cfg, tblock, ip);
9663                         link_bblock (cfg, bblock, tblock);
9664
9665                         if (sp != stack_start) {
9666                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9667                                 CHECK_UNVERIFIABLE (cfg);
9668                         }
9669
9670                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9671                         cmp->sreg1 = sp [0]->dreg;
9672                         type_from_op (cfg, cmp, sp [0], NULL);
9673                         CHECK_TYPE (cmp);
9674
9675 #if SIZEOF_REGISTER == 4
9676                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9677                                 /* Convert it to OP_LCOMPARE */
9678                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9679                                 ins->type = STACK_I8;
9680                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9681                                 ins->inst_l = 0;
9682                                 MONO_ADD_INS (bblock, ins);
9683                                 cmp->opcode = OP_LCOMPARE;
9684                                 cmp->sreg2 = ins->dreg;
9685                         }
9686 #endif
9687                         MONO_ADD_INS (bblock, cmp);
9688
9689                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9690                         type_from_op (cfg, ins, sp [0], NULL);
9691                         MONO_ADD_INS (bblock, ins);
9692                         ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9693                         GET_BBLOCK (cfg, tblock, target);
9694                         ins->inst_true_bb = tblock;
9695                         GET_BBLOCK (cfg, tblock, ip);
9696                         ins->inst_false_bb = tblock;
9697                         start_new_bblock = 2;
9698
9699                         sp = stack_start;
9700                         inline_costs += BRANCH_COST;
9701                         break;
9702                 }
9703                 case CEE_BEQ:
9704                 case CEE_BGE:
9705                 case CEE_BGT:
9706                 case CEE_BLE:
9707                 case CEE_BLT:
9708                 case CEE_BNE_UN:
9709                 case CEE_BGE_UN:
9710                 case CEE_BGT_UN:
9711                 case CEE_BLE_UN:
9712                 case CEE_BLT_UN:
9713                         CHECK_OPSIZE (5);
9714                         CHECK_STACK (2);
9715                         MONO_INST_NEW (cfg, ins, *ip);
9716                         ip++;
9717                         target = ip + 4 + (gint32)read32(ip);
9718                         ip += 4;
9719
9720                         ADD_BINCOND (NULL);
9721
9722                         sp = stack_start;
9723                         inline_costs += BRANCH_COST;
9724                         break;
9725                 case CEE_SWITCH: {
9726                         MonoInst *src1;
9727                         MonoBasicBlock **targets;
9728                         MonoBasicBlock *default_bblock;
9729                         MonoJumpInfoBBTable *table;
9730                         int offset_reg = alloc_preg (cfg);
9731                         int target_reg = alloc_preg (cfg);
9732                         int table_reg = alloc_preg (cfg);
9733                         int sum_reg = alloc_preg (cfg);
9734                         gboolean use_op_switch;
9735
9736                         CHECK_OPSIZE (5);
9737                         CHECK_STACK (1);
9738                         n = read32 (ip + 1);
9739                         --sp;
9740                         src1 = sp [0];
9741                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9742                                 UNVERIFIED;
9743
9744                         ip += 5;
9745                         CHECK_OPSIZE (n * sizeof (guint32));
9746                         target = ip + n * sizeof (guint32);
9747
9748                         GET_BBLOCK (cfg, default_bblock, target);
9749                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9750
9751                         targets = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9752                         for (i = 0; i < n; ++i) {
9753                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9754                                 targets [i] = tblock;
9755                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9756                                 ip += 4;
9757                         }
9758
9759                         if (sp != stack_start) {
9760                                 /*
9761                                  * Link the current bb with the targets as well, so handle_stack_args
9762                                  * will set their in_stack correctly.
9763                                  */
9764                                 link_bblock (cfg, bblock, default_bblock);
9765                                 for (i = 0; i < n; ++i)
9766                                         link_bblock (cfg, bblock, targets [i]);
9767
9768                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9769                                 sp = stack_start;
9770                                 CHECK_UNVERIFIABLE (cfg);
9771                         }
9772
9773                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9774                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9775                         bblock = cfg->cbb;
9776
9777                         for (i = 0; i < n; ++i)
9778                                 link_bblock (cfg, bblock, targets [i]);
9779
9780                         table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9781                         table->table = targets;
9782                         table->table_size = n;
9783
9784                         use_op_switch = FALSE;
9785 #ifdef TARGET_ARM
9786                         /* ARM implements SWITCH statements differently */
9787                         /* FIXME: Make it use the generic implementation */
9788                         if (!cfg->compile_aot)
9789                                 use_op_switch = TRUE;
9790 #endif
9791
9792                         if (COMPILE_LLVM (cfg))
9793                                 use_op_switch = TRUE;
9794
9795                         cfg->cbb->has_jump_table = 1;
9796
9797                         if (use_op_switch) {
9798                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9799                                 ins->sreg1 = src1->dreg;
9800                                 ins->inst_p0 = table;
9801                                 ins->inst_many_bb = targets;
9802                                 ins->klass = GUINT_TO_POINTER (n);
9803                                 MONO_ADD_INS (cfg->cbb, ins);
9804                         } else {
9805                                 if (sizeof (gpointer) == 8)
9806                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9807                                 else
9808                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9809
9810 #if SIZEOF_REGISTER == 8
9811                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9812                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9813 #endif
9814
9815                                 if (cfg->compile_aot) {
9816                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9817                                 } else {
9818                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9819                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9820                                         ins->inst_p0 = table;
9821                                         ins->dreg = table_reg;
9822                                         MONO_ADD_INS (cfg->cbb, ins);
9823                                 }
9824
9825                                 /* FIXME: Use load_memindex */
9826                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9827                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9828                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9829                         }
9830                         start_new_bblock = 1;
9831                         inline_costs += (BRANCH_COST * 2);
9832                         break;
9833                 }
9834                 case CEE_LDIND_I1:
9835                 case CEE_LDIND_U1:
9836                 case CEE_LDIND_I2:
9837                 case CEE_LDIND_U2:
9838                 case CEE_LDIND_I4:
9839                 case CEE_LDIND_U4:
9840                 case CEE_LDIND_I8:
9841                 case CEE_LDIND_I:
9842                 case CEE_LDIND_R4:
9843                 case CEE_LDIND_R8:
9844                 case CEE_LDIND_REF:
9845                         CHECK_STACK (1);
9846                         --sp;
9847
9848                         switch (*ip) {
9849                         case CEE_LDIND_R4:
9850                         case CEE_LDIND_R8:
9851                                 dreg = alloc_freg (cfg);
9852                                 break;
9853                         case CEE_LDIND_I8:
9854                                 dreg = alloc_lreg (cfg);
9855                                 break;
9856                         case CEE_LDIND_REF:
9857                                 dreg = alloc_ireg_ref (cfg);
9858                                 break;
9859                         default:
9860                                 dreg = alloc_preg (cfg);
9861                         }
9862
9863                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
9864                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
9865                         if (*ip == CEE_LDIND_R4)
9866                                 ins->type = cfg->r4_stack_type;
9867                         ins->flags |= ins_flag;
9868                         MONO_ADD_INS (bblock, ins);
9869                         *sp++ = ins;
9870                         if (ins_flag & MONO_INST_VOLATILE) {
9871                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9872                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9873                         }
9874                         ins_flag = 0;
9875                         ++ip;
9876                         break;
9877                 case CEE_STIND_REF:
9878                 case CEE_STIND_I1:
9879                 case CEE_STIND_I2:
9880                 case CEE_STIND_I4:
9881                 case CEE_STIND_I8:
9882                 case CEE_STIND_R4:
9883                 case CEE_STIND_R8:
9884                 case CEE_STIND_I:
9885                         CHECK_STACK (2);
9886                         sp -= 2;
9887
9888                         if (ins_flag & MONO_INST_VOLATILE) {
9889                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9890                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9891                         }
9892
9893                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9894                         ins->flags |= ins_flag;
9895                         ins_flag = 0;
9896
9897                         MONO_ADD_INS (bblock, ins);
9898
9899                         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)))
9900                                 emit_write_barrier (cfg, sp [0], sp [1]);
9901
9902                         inline_costs += 1;
9903                         ++ip;
9904                         break;
9905
9906                 case CEE_MUL:
9907                         CHECK_STACK (2);
9908
9909                         MONO_INST_NEW (cfg, ins, (*ip));
9910                         sp -= 2;
9911                         ins->sreg1 = sp [0]->dreg;
9912                         ins->sreg2 = sp [1]->dreg;
9913                         type_from_op (cfg, ins, sp [0], sp [1]);
9914                         CHECK_TYPE (ins);
9915                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9916
9917                         /* Use the immediate opcodes if possible */
9918                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9919                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9920                                 if (imm_opcode != -1) {
9921                                         ins->opcode = imm_opcode;
9922                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9923                                         ins->sreg2 = -1;
9924
9925                                         NULLIFY_INS (sp [1]);
9926                                 }
9927                         }
9928
9929                         MONO_ADD_INS ((cfg)->cbb, (ins));
9930
9931                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
9932                         ip++;
9933                         break;
9934                 case CEE_ADD:
9935                 case CEE_SUB:
9936                 case CEE_DIV:
9937                 case CEE_DIV_UN:
9938                 case CEE_REM:
9939                 case CEE_REM_UN:
9940                 case CEE_AND:
9941                 case CEE_OR:
9942                 case CEE_XOR:
9943                 case CEE_SHL:
9944                 case CEE_SHR:
9945                 case CEE_SHR_UN:
9946                         CHECK_STACK (2);
9947
9948                         MONO_INST_NEW (cfg, ins, (*ip));
9949                         sp -= 2;
9950                         ins->sreg1 = sp [0]->dreg;
9951                         ins->sreg2 = sp [1]->dreg;
9952                         type_from_op (cfg, ins, sp [0], sp [1]);
9953                         CHECK_TYPE (ins);
9954                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9955                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
9956
9957                         /* FIXME: Pass opcode to is_inst_imm */
9958
9959                         /* Use the immediate opcodes if possible */
9960                         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)) {
9961                                 int imm_opcode;
9962
9963                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9964 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
9965                                 /* Keep emulated opcodes which are optimized away later */
9966                                 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) {
9967                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
9968                                 }
9969 #endif
9970                                 if (imm_opcode != -1) {
9971                                         ins->opcode = imm_opcode;
9972                                         if (sp [1]->opcode == OP_I8CONST) {
9973 #if SIZEOF_REGISTER == 8
9974                                                 ins->inst_imm = sp [1]->inst_l;
9975 #else
9976                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9977                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9978 #endif
9979                                         }
9980                                         else
9981                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9982                                         ins->sreg2 = -1;
9983
9984                                         /* Might be followed by an instruction added by add_widen_op */
9985                                         if (sp [1]->next == NULL)
9986                                                 NULLIFY_INS (sp [1]);
9987                                 }
9988                         }
9989                         MONO_ADD_INS ((cfg)->cbb, (ins));
9990
9991                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
9992                         ip++;
9993                         break;
9994                 case CEE_NEG:
9995                 case CEE_NOT:
9996                 case CEE_CONV_I1:
9997                 case CEE_CONV_I2:
9998                 case CEE_CONV_I4:
9999                 case CEE_CONV_R4:
10000                 case CEE_CONV_R8:
10001                 case CEE_CONV_U4:
10002                 case CEE_CONV_I8:
10003                 case CEE_CONV_U8:
10004                 case CEE_CONV_OVF_I8:
10005                 case CEE_CONV_OVF_U8:
10006                 case CEE_CONV_R_UN:
10007                         CHECK_STACK (1);
10008
10009                         /* Special case this earlier so we have long constants in the IR */
10010                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10011                                 int data = sp [-1]->inst_c0;
10012                                 sp [-1]->opcode = OP_I8CONST;
10013                                 sp [-1]->type = STACK_I8;
10014 #if SIZEOF_REGISTER == 8
10015                                 if ((*ip) == CEE_CONV_U8)
10016                                         sp [-1]->inst_c0 = (guint32)data;
10017                                 else
10018                                         sp [-1]->inst_c0 = data;
10019 #else
10020                                 sp [-1]->inst_ls_word = data;
10021                                 if ((*ip) == CEE_CONV_U8)
10022                                         sp [-1]->inst_ms_word = 0;
10023                                 else
10024                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10025 #endif
10026                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10027                         }
10028                         else {
10029                                 ADD_UNOP (*ip);
10030                         }
10031                         ip++;
10032                         break;
10033                 case CEE_CONV_OVF_I4:
10034                 case CEE_CONV_OVF_I1:
10035                 case CEE_CONV_OVF_I2:
10036                 case CEE_CONV_OVF_I:
10037                 case CEE_CONV_OVF_U:
10038                         CHECK_STACK (1);
10039
10040                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10041                                 ADD_UNOP (CEE_CONV_OVF_I8);
10042                                 ADD_UNOP (*ip);
10043                         } else {
10044                                 ADD_UNOP (*ip);
10045                         }
10046                         ip++;
10047                         break;
10048                 case CEE_CONV_OVF_U1:
10049                 case CEE_CONV_OVF_U2:
10050                 case CEE_CONV_OVF_U4:
10051                         CHECK_STACK (1);
10052
10053                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10054                                 ADD_UNOP (CEE_CONV_OVF_U8);
10055                                 ADD_UNOP (*ip);
10056                         } else {
10057                                 ADD_UNOP (*ip);
10058                         }
10059                         ip++;
10060                         break;
10061                 case CEE_CONV_OVF_I1_UN:
10062                 case CEE_CONV_OVF_I2_UN:
10063                 case CEE_CONV_OVF_I4_UN:
10064                 case CEE_CONV_OVF_I8_UN:
10065                 case CEE_CONV_OVF_U1_UN:
10066                 case CEE_CONV_OVF_U2_UN:
10067                 case CEE_CONV_OVF_U4_UN:
10068                 case CEE_CONV_OVF_U8_UN:
10069                 case CEE_CONV_OVF_I_UN:
10070                 case CEE_CONV_OVF_U_UN:
10071                 case CEE_CONV_U2:
10072                 case CEE_CONV_U1:
10073                 case CEE_CONV_I:
10074                 case CEE_CONV_U:
10075                         CHECK_STACK (1);
10076                         ADD_UNOP (*ip);
10077                         CHECK_CFG_EXCEPTION;
10078                         ip++;
10079                         break;
10080                 case CEE_ADD_OVF:
10081                 case CEE_ADD_OVF_UN:
10082                 case CEE_MUL_OVF:
10083                 case CEE_MUL_OVF_UN:
10084                 case CEE_SUB_OVF:
10085                 case CEE_SUB_OVF_UN:
10086                         CHECK_STACK (2);
10087                         ADD_BINOP (*ip);
10088                         ip++;
10089                         break;
10090                 case CEE_CPOBJ:
10091                         GSHAREDVT_FAILURE (*ip);
10092                         CHECK_OPSIZE (5);
10093                         CHECK_STACK (2);
10094                         token = read32 (ip + 1);
10095                         klass = mini_get_class (method, token, generic_context);
10096                         CHECK_TYPELOAD (klass);
10097                         sp -= 2;
10098                         if (generic_class_is_reference_type (cfg, klass)) {
10099                                 MonoInst *store, *load;
10100                                 int dreg = alloc_ireg_ref (cfg);
10101
10102                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10103                                 load->flags |= ins_flag;
10104                                 MONO_ADD_INS (cfg->cbb, load);
10105
10106                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10107                                 store->flags |= ins_flag;
10108                                 MONO_ADD_INS (cfg->cbb, store);
10109
10110                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10111                                         emit_write_barrier (cfg, sp [0], sp [1]);
10112                         } else {
10113                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10114                         }
10115                         ins_flag = 0;
10116                         ip += 5;
10117                         break;
10118                 case CEE_LDOBJ: {
10119                         int loc_index = -1;
10120                         int stloc_len = 0;
10121
10122                         CHECK_OPSIZE (5);
10123                         CHECK_STACK (1);
10124                         --sp;
10125                         token = read32 (ip + 1);
10126                         klass = mini_get_class (method, token, generic_context);
10127                         CHECK_TYPELOAD (klass);
10128
10129                         /* Optimize the common ldobj+stloc combination */
10130                         switch (ip [5]) {
10131                         case CEE_STLOC_S:
10132                                 loc_index = ip [6];
10133                                 stloc_len = 2;
10134                                 break;
10135                         case CEE_STLOC_0:
10136                         case CEE_STLOC_1:
10137                         case CEE_STLOC_2:
10138                         case CEE_STLOC_3:
10139                                 loc_index = ip [5] - CEE_STLOC_0;
10140                                 stloc_len = 1;
10141                                 break;
10142                         default:
10143                                 break;
10144                         }
10145
10146                         if ((loc_index != -1) && ip_in_bb (cfg, bblock, ip + 5)) {
10147                                 CHECK_LOCAL (loc_index);
10148
10149                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10150                                 ins->dreg = cfg->locals [loc_index]->dreg;
10151                                 ins->flags |= ins_flag;
10152                                 ip += 5;
10153                                 ip += stloc_len;
10154                                 if (ins_flag & MONO_INST_VOLATILE) {
10155                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10156                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10157                                 }
10158                                 ins_flag = 0;
10159                                 break;
10160                         }
10161
10162                         /* Optimize the ldobj+stobj combination */
10163                         /* The reference case ends up being a load+store anyway */
10164                         /* Skip this if the operation is volatile. */
10165                         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)) {
10166                                 CHECK_STACK (1);
10167
10168                                 sp --;
10169
10170                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10171
10172                                 ip += 5 + 5;
10173                                 ins_flag = 0;
10174                                 break;
10175                         }
10176
10177                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10178                         ins->flags |= ins_flag;
10179                         *sp++ = ins;
10180
10181                         if (ins_flag & MONO_INST_VOLATILE) {
10182                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10183                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10184                         }
10185
10186                         ip += 5;
10187                         ins_flag = 0;
10188                         inline_costs += 1;
10189                         break;
10190                 }
10191                 case CEE_LDSTR:
10192                         CHECK_STACK_OVF (1);
10193                         CHECK_OPSIZE (5);
10194                         n = read32 (ip + 1);
10195
10196                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10197                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10198                                 ins->type = STACK_OBJ;
10199                                 *sp = ins;
10200                         }
10201                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10202                                 MonoInst *iargs [1];
10203                                 char *str = mono_method_get_wrapper_data (method, n);
10204
10205                                 if (cfg->compile_aot)
10206                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10207                                 else
10208                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10209                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10210                         } else {
10211                                 if (cfg->opt & MONO_OPT_SHARED) {
10212                                         MonoInst *iargs [3];
10213
10214                                         if (cfg->compile_aot) {
10215                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10216                                         }
10217                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10218                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10219                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10220                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10221                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10222                                 } else {
10223                                         if (bblock->out_of_line) {
10224                                                 MonoInst *iargs [2];
10225
10226                                                 if (image == mono_defaults.corlib) {
10227                                                         /*
10228                                                          * Avoid relocations in AOT and save some space by using a
10229                                                          * version of helper_ldstr specialized to mscorlib.
10230                                                          */
10231                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10232                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10233                                                 } else {
10234                                                         /* Avoid creating the string object */
10235                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10236                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10237                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10238                                                 }
10239                                         }
10240                                         else
10241                                         if (cfg->compile_aot) {
10242                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10243                                                 *sp = ins;
10244                                                 MONO_ADD_INS (bblock, ins);
10245                                         }
10246                                         else {
10247                                                 NEW_PCONST (cfg, ins, NULL);
10248                                                 ins->type = STACK_OBJ;
10249                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10250                                                 if (!ins->inst_p0)
10251                                                         OUT_OF_MEMORY_FAILURE;
10252
10253                                                 *sp = ins;
10254                                                 MONO_ADD_INS (bblock, ins);
10255                                         }
10256                                 }
10257                         }
10258
10259                         sp++;
10260                         ip += 5;
10261                         break;
10262                 case CEE_NEWOBJ: {
10263                         MonoInst *iargs [2];
10264                         MonoMethodSignature *fsig;
10265                         MonoInst this_ins;
10266                         MonoInst *alloc;
10267                         MonoInst *vtable_arg = NULL;
10268
10269                         CHECK_OPSIZE (5);
10270                         token = read32 (ip + 1);
10271                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10272                         if (!cmethod || mono_loader_get_last_error ())
10273                                 LOAD_ERROR;
10274                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10275                         CHECK_CFG_ERROR;
10276
10277                         mono_save_token_info (cfg, image, token, cmethod);
10278
10279                         if (!mono_class_init (cmethod->klass))
10280                                 TYPE_LOAD_ERROR (cmethod->klass);
10281
10282                         context_used = mini_method_check_context_used (cfg, cmethod);
10283
10284                         if (mono_security_core_clr_enabled ())
10285                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
10286
10287                         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)) {
10288                                 emit_generic_class_init (cfg, cmethod->klass, &bblock);
10289                                 CHECK_TYPELOAD (cmethod->klass);
10290                         }
10291
10292                         /*
10293                         if (cfg->gsharedvt) {
10294                                 if (mini_is_gsharedvt_variable_signature (sig))
10295                                         GSHAREDVT_FAILURE (*ip);
10296                         }
10297                         */
10298
10299                         n = fsig->param_count;
10300                         CHECK_STACK (n);
10301
10302                         /*
10303                          * Generate smaller code for the common newobj <exception> instruction in
10304                          * argument checking code.
10305                          */
10306                         if (bblock->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10307                                 is_exception_class (cmethod->klass) && n <= 2 &&
10308                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10309                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10310                                 MonoInst *iargs [3];
10311
10312                                 sp -= n;
10313
10314                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10315                                 switch (n) {
10316                                 case 0:
10317                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10318                                         break;
10319                                 case 1:
10320                                         iargs [1] = sp [0];
10321                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10322                                         break;
10323                                 case 2:
10324                                         iargs [1] = sp [0];
10325                                         iargs [2] = sp [1];
10326                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10327                                         break;
10328                                 default:
10329                                         g_assert_not_reached ();
10330                                 }
10331
10332                                 ip += 5;
10333                                 inline_costs += 5;
10334                                 break;
10335                         }
10336
10337                         /* move the args to allow room for 'this' in the first position */
10338                         while (n--) {
10339                                 --sp;
10340                                 sp [1] = sp [0];
10341                         }
10342
10343                         /* check_call_signature () requires sp[0] to be set */
10344                         this_ins.type = STACK_OBJ;
10345                         sp [0] = &this_ins;
10346                         if (check_call_signature (cfg, fsig, sp))
10347                                 UNVERIFIED;
10348
10349                         iargs [0] = NULL;
10350
10351                         if (mini_class_is_system_array (cmethod->klass)) {
10352                                 *sp = emit_get_rgctx_method (cfg, context_used,
10353                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10354
10355                                 /* Avoid varargs in the common case */
10356                                 if (fsig->param_count == 1)
10357                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10358                                 else if (fsig->param_count == 2)
10359                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10360                                 else if (fsig->param_count == 3)
10361                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10362                                 else if (fsig->param_count == 4)
10363                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10364                                 else
10365                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10366                         } else if (cmethod->string_ctor) {
10367                                 g_assert (!context_used);
10368                                 g_assert (!vtable_arg);
10369                                 /* we simply pass a null pointer */
10370                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10371                                 /* now call the string ctor */
10372                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10373                         } else {
10374                                 if (cmethod->klass->valuetype) {
10375                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10376                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10377                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10378
10379                                         alloc = NULL;
10380
10381                                         /*
10382                                          * The code generated by mini_emit_virtual_call () expects
10383                                          * iargs [0] to be a boxed instance, but luckily the vcall
10384                                          * will be transformed into a normal call there.
10385                                          */
10386                                 } else if (context_used) {
10387                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10388                                         *sp = alloc;
10389                                 } else {
10390                                         MonoVTable *vtable = NULL;
10391
10392                                         if (!cfg->compile_aot)
10393                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10394                                         CHECK_TYPELOAD (cmethod->klass);
10395
10396                                         /*
10397                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10398                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10399                                          * As a workaround, we call class cctors before allocating objects.
10400                                          */
10401                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10402                                                 emit_class_init (cfg, cmethod->klass, &bblock);
10403                                                 if (cfg->verbose_level > 2)
10404                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10405                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10406                                         }
10407
10408                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10409                                         *sp = alloc;
10410                                 }
10411                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10412
10413                                 if (alloc)
10414                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10415
10416                                 /* Now call the actual ctor */
10417                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &bblock, &inline_costs);
10418                                 CHECK_CFG_EXCEPTION;
10419                         }
10420
10421                         if (alloc == NULL) {
10422                                 /* Valuetype */
10423                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10424                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10425                                 *sp++= ins;
10426                         } else {
10427                                 *sp++ = alloc;
10428                         }
10429
10430                         ip += 5;
10431                         inline_costs += 5;
10432                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10433                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10434                         break;
10435                 }
10436                 case CEE_CASTCLASS:
10437                         CHECK_STACK (1);
10438                         --sp;
10439                         CHECK_OPSIZE (5);
10440                         token = read32 (ip + 1);
10441                         klass = mini_get_class (method, token, generic_context);
10442                         CHECK_TYPELOAD (klass);
10443                         if (sp [0]->type != STACK_OBJ)
10444                                 UNVERIFIED;
10445
10446                         ins = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10447                         CHECK_CFG_EXCEPTION;
10448
10449                         *sp ++ = ins;
10450                         ip += 5;
10451                         break;
10452                 case CEE_ISINST: {
10453                         CHECK_STACK (1);
10454                         --sp;
10455                         CHECK_OPSIZE (5);
10456                         token = read32 (ip + 1);
10457                         klass = mini_get_class (method, token, generic_context);
10458                         CHECK_TYPELOAD (klass);
10459                         if (sp [0]->type != STACK_OBJ)
10460                                 UNVERIFIED;
10461
10462                         context_used = mini_class_check_context_used (cfg, klass);
10463
10464                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10465                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10466                                 MonoInst *args [3];
10467                                 int idx;
10468
10469                                 /* obj */
10470                                 args [0] = *sp;
10471
10472                                 /* klass */
10473                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10474
10475                                 /* inline cache*/
10476                                 if (cfg->compile_aot) {
10477                                         idx = get_castclass_cache_idx (cfg);
10478                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10479                                 } else {
10480                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
10481                                 }
10482
10483                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10484                                 ip += 5;
10485                                 inline_costs += 2;
10486                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10487                                 MonoMethod *mono_isinst;
10488                                 MonoInst *iargs [1];
10489                                 int costs;
10490
10491                                 mono_isinst = mono_marshal_get_isinst (klass);
10492                                 iargs [0] = sp [0];
10493
10494                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
10495                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10496                                 CHECK_CFG_EXCEPTION;
10497                                 g_assert (costs > 0);
10498
10499                                 ip += 5;
10500                                 cfg->real_offset += 5;
10501
10502                                 *sp++= iargs [0];
10503
10504                                 inline_costs += costs;
10505                         }
10506                         else {
10507                                 ins = handle_isinst (cfg, klass, *sp, context_used);
10508                                 CHECK_CFG_EXCEPTION;
10509                                 bblock = cfg->cbb;
10510                                 *sp ++ = ins;
10511                                 ip += 5;
10512                         }
10513                         break;
10514                 }
10515                 case CEE_UNBOX_ANY: {
10516                         MonoInst *res, *addr;
10517
10518                         CHECK_STACK (1);
10519                         --sp;
10520                         CHECK_OPSIZE (5);
10521                         token = read32 (ip + 1);
10522                         klass = mini_get_class (method, token, generic_context);
10523                         CHECK_TYPELOAD (klass);
10524
10525                         mono_save_token_info (cfg, image, token, klass);
10526
10527                         context_used = mini_class_check_context_used (cfg, klass);
10528
10529                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10530                                 res = handle_unbox_gsharedvt (cfg, klass, *sp, &bblock);
10531                                 inline_costs += 2;
10532                         } else if (generic_class_is_reference_type (cfg, klass)) {
10533                                 res = handle_castclass (cfg, klass, *sp, ip, &bblock, &inline_costs);
10534                                 CHECK_CFG_EXCEPTION;
10535                         } else if (mono_class_is_nullable (klass)) {
10536                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10537                         } else {
10538                                 addr = handle_unbox (cfg, klass, sp, context_used);
10539                                 /* LDOBJ */
10540                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10541                                 res = ins;
10542                                 inline_costs += 2;
10543                         }
10544
10545                         *sp ++ = res;
10546                         ip += 5;
10547                         break;
10548                 }
10549                 case CEE_BOX: {
10550                         MonoInst *val;
10551                         MonoClass *enum_class;
10552                         MonoMethod *has_flag;
10553
10554                         CHECK_STACK (1);
10555                         --sp;
10556                         val = *sp;
10557                         CHECK_OPSIZE (5);
10558                         token = read32 (ip + 1);
10559                         klass = mini_get_class (method, token, generic_context);
10560                         CHECK_TYPELOAD (klass);
10561
10562                         mono_save_token_info (cfg, image, token, klass);
10563
10564                         context_used = mini_class_check_context_used (cfg, klass);
10565
10566                         if (generic_class_is_reference_type (cfg, klass)) {
10567                                 *sp++ = val;
10568                                 ip += 5;
10569                                 break;
10570                         }
10571
10572                         if (klass == mono_defaults.void_class)
10573                                 UNVERIFIED;
10574                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10575                                 UNVERIFIED;
10576                         /* frequent check in generic code: box (struct), brtrue */
10577
10578                         /*
10579                          * Look for:
10580                          *
10581                          *   <push int/long ptr>
10582                          *   <push int/long>
10583                          *   box MyFlags
10584                          *   constrained. MyFlags
10585                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10586                          *
10587                          * If we find this sequence and the operand types on box and constrained
10588                          * are equal, we can emit a specialized instruction sequence instead of
10589                          * the very slow HasFlag () call.
10590                          */
10591                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10592                             /* Cheap checks first. */
10593                             ip + 5 + 6 + 5 < end &&
10594                             ip [5] == CEE_PREFIX1 &&
10595                             ip [6] == CEE_CONSTRAINED_ &&
10596                             ip [11] == CEE_CALLVIRT &&
10597                             ip_in_bb (cfg, bblock, ip + 5 + 6 + 5) &&
10598                             mono_class_is_enum (klass) &&
10599                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10600                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10601                             has_flag->klass == mono_defaults.enum_class &&
10602                             !strcmp (has_flag->name, "HasFlag") &&
10603                             has_flag->signature->hasthis &&
10604                             has_flag->signature->param_count == 1) {
10605                                 CHECK_TYPELOAD (enum_class);
10606
10607                                 if (enum_class == klass) {
10608                                         MonoInst *enum_this, *enum_flag;
10609
10610                                         ip += 5 + 6 + 5;
10611                                         --sp;
10612
10613                                         enum_this = sp [0];
10614                                         enum_flag = sp [1];
10615
10616                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10617                                         break;
10618                                 }
10619                         }
10620
10621                         // FIXME: LLVM can't handle the inconsistent bb linking
10622                         if (!mono_class_is_nullable (klass) &&
10623                                 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) &&
10624                                 (ip [5] == CEE_BRTRUE ||
10625                                  ip [5] == CEE_BRTRUE_S ||
10626                                  ip [5] == CEE_BRFALSE ||
10627                                  ip [5] == CEE_BRFALSE_S)) {
10628                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10629                                 int dreg;
10630                                 MonoBasicBlock *true_bb, *false_bb;
10631
10632                                 ip += 5;
10633
10634                                 if (cfg->verbose_level > 3) {
10635                                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10636                                         printf ("<box+brtrue opt>\n");
10637                                 }
10638
10639                                 switch (*ip) {
10640                                 case CEE_BRTRUE_S:
10641                                 case CEE_BRFALSE_S:
10642                                         CHECK_OPSIZE (2);
10643                                         ip++;
10644                                         target = ip + 1 + (signed char)(*ip);
10645                                         ip++;
10646                                         break;
10647                                 case CEE_BRTRUE:
10648                                 case CEE_BRFALSE:
10649                                         CHECK_OPSIZE (5);
10650                                         ip++;
10651                                         target = ip + 4 + (gint)(read32 (ip));
10652                                         ip += 4;
10653                                         break;
10654                                 default:
10655                                         g_assert_not_reached ();
10656                                 }
10657
10658                                 /*
10659                                  * We need to link both bblocks, since it is needed for handling stack
10660                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10661                                  * Branching to only one of them would lead to inconsistencies, so
10662                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10663                                  */
10664                                 GET_BBLOCK (cfg, true_bb, target);
10665                                 GET_BBLOCK (cfg, false_bb, ip);
10666
10667                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10668                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10669
10670                                 if (sp != stack_start) {
10671                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10672                                         sp = stack_start;
10673                                         CHECK_UNVERIFIABLE (cfg);
10674                                 }
10675
10676                                 if (COMPILE_LLVM (cfg)) {
10677                                         dreg = alloc_ireg (cfg);
10678                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10679                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10680
10681                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10682                                 } else {
10683                                         /* The JIT can't eliminate the iconst+compare */
10684                                         MONO_INST_NEW (cfg, ins, OP_BR);
10685                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10686                                         MONO_ADD_INS (cfg->cbb, ins);
10687                                 }
10688
10689                                 start_new_bblock = 1;
10690                                 break;
10691                         }
10692
10693                         *sp++ = handle_box (cfg, val, klass, context_used, &bblock);
10694
10695                         CHECK_CFG_EXCEPTION;
10696                         ip += 5;
10697                         inline_costs += 1;
10698                         break;
10699                 }
10700                 case CEE_UNBOX: {
10701                         CHECK_STACK (1);
10702                         --sp;
10703                         CHECK_OPSIZE (5);
10704                         token = read32 (ip + 1);
10705                         klass = mini_get_class (method, token, generic_context);
10706                         CHECK_TYPELOAD (klass);
10707
10708                         mono_save_token_info (cfg, image, token, klass);
10709
10710                         context_used = mini_class_check_context_used (cfg, klass);
10711
10712                         if (mono_class_is_nullable (klass)) {
10713                                 MonoInst *val;
10714
10715                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10716                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10717
10718                                 *sp++= ins;
10719                         } else {
10720                                 ins = handle_unbox (cfg, klass, sp, context_used);
10721                                 *sp++ = ins;
10722                         }
10723                         ip += 5;
10724                         inline_costs += 2;
10725                         break;
10726                 }
10727                 case CEE_LDFLD:
10728                 case CEE_LDFLDA:
10729                 case CEE_STFLD:
10730                 case CEE_LDSFLD:
10731                 case CEE_LDSFLDA:
10732                 case CEE_STSFLD: {
10733                         MonoClassField *field;
10734 #ifndef DISABLE_REMOTING
10735                         int costs;
10736 #endif
10737                         guint foffset;
10738                         gboolean is_instance;
10739                         int op;
10740                         gpointer addr = NULL;
10741                         gboolean is_special_static;
10742                         MonoType *ftype;
10743                         MonoInst *store_val = NULL;
10744                         MonoInst *thread_ins;
10745
10746                         op = *ip;
10747                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10748                         if (is_instance) {
10749                                 if (op == CEE_STFLD) {
10750                                         CHECK_STACK (2);
10751                                         sp -= 2;
10752                                         store_val = sp [1];
10753                                 } else {
10754                                         CHECK_STACK (1);
10755                                         --sp;
10756                                 }
10757                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10758                                         UNVERIFIED;
10759                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10760                                         UNVERIFIED;
10761                         } else {
10762                                 if (op == CEE_STSFLD) {
10763                                         CHECK_STACK (1);
10764                                         sp--;
10765                                         store_val = sp [0];
10766                                 }
10767                         }
10768
10769                         CHECK_OPSIZE (5);
10770                         token = read32 (ip + 1);
10771                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10772                                 field = mono_method_get_wrapper_data (method, token);
10773                                 klass = field->parent;
10774                         }
10775                         else {
10776                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10777                                 CHECK_CFG_ERROR;
10778                         }
10779                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10780                                 FIELD_ACCESS_FAILURE (method, field);
10781                         mono_class_init (klass);
10782
10783                         /* if the class is Critical then transparent code cannot access it's fields */
10784                         if (!is_instance && mono_security_core_clr_enabled ())
10785                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10786
10787                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10788                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10789                         if (mono_security_core_clr_enabled ())
10790                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
10791                         */
10792
10793                         /*
10794                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10795                          * the static case.
10796                          */
10797                         if (is_instance && field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
10798                                 switch (op) {
10799                                 case CEE_LDFLD:
10800                                         op = CEE_LDSFLD;
10801                                         break;
10802                                 case CEE_STFLD:
10803                                         op = CEE_STSFLD;
10804                                         break;
10805                                 case CEE_LDFLDA:
10806                                         op = CEE_LDSFLDA;
10807                                         break;
10808                                 default:
10809                                         g_assert_not_reached ();
10810                                 }
10811                                 is_instance = FALSE;
10812                         }
10813
10814                         context_used = mini_class_check_context_used (cfg, klass);
10815
10816                         /* INSTANCE CASE */
10817
10818                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10819                         if (op == CEE_STFLD) {
10820                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10821                                         UNVERIFIED;
10822 #ifndef DISABLE_REMOTING
10823                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10824                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10825                                         MonoInst *iargs [5];
10826
10827                                         GSHAREDVT_FAILURE (op);
10828
10829                                         iargs [0] = sp [0];
10830                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10831                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10832                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10833                                                     field->offset);
10834                                         iargs [4] = sp [1];
10835
10836                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10837                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10838                                                                                            iargs, ip, cfg->real_offset, TRUE, &bblock);
10839                                                 CHECK_CFG_EXCEPTION;
10840                                                 g_assert (costs > 0);
10841
10842                                                 cfg->real_offset += 5;
10843
10844                                                 inline_costs += costs;
10845                                         } else {
10846                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10847                                         }
10848                                 } else
10849 #endif
10850                                 {
10851                                         MonoInst *store;
10852
10853                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10854
10855                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10856                                                 MonoInst *offset_ins;
10857
10858                                                 context_used = mini_class_check_context_used (cfg, klass);
10859
10860                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10861                                                 dreg = alloc_ireg_mp (cfg);
10862                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10863                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
10864                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10865                                         } else {
10866                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10867                                         }
10868                                         if (sp [0]->opcode != OP_LDADDR)
10869                                                 store->flags |= MONO_INST_FAULT;
10870
10871                                 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)) {
10872                                         /* insert call to write barrier */
10873                                         MonoInst *ptr;
10874                                         int dreg;
10875
10876                                         dreg = alloc_ireg_mp (cfg);
10877                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10878                                         emit_write_barrier (cfg, ptr, sp [1]);
10879                                 }
10880
10881                                         store->flags |= ins_flag;
10882                                 }
10883                                 ins_flag = 0;
10884                                 ip += 5;
10885                                 break;
10886                         }
10887
10888 #ifndef DISABLE_REMOTING
10889                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10890                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10891                                 MonoInst *iargs [4];
10892
10893                                 GSHAREDVT_FAILURE (op);
10894
10895                                 iargs [0] = sp [0];
10896                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10897                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10898                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10899                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10900                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10901                                                                                    iargs, ip, cfg->real_offset, TRUE, &bblock);
10902                                         CHECK_CFG_EXCEPTION;
10903                                         g_assert (costs > 0);
10904
10905                                         cfg->real_offset += 5;
10906
10907                                         *sp++ = iargs [0];
10908
10909                                         inline_costs += costs;
10910                                 } else {
10911                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10912                                         *sp++ = ins;
10913                                 }
10914                         } else
10915 #endif
10916                         if (is_instance) {
10917                                 if (sp [0]->type == STACK_VTYPE) {
10918                                         MonoInst *var;
10919
10920                                         /* Have to compute the address of the variable */
10921
10922                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10923                                         if (!var)
10924                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10925                                         else
10926                                                 g_assert (var->klass == klass);
10927
10928                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10929                                         sp [0] = ins;
10930                                 }
10931
10932                                 if (op == CEE_LDFLDA) {
10933                                         if (sp [0]->type == STACK_OBJ) {
10934                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10935                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10936                                         }
10937
10938                                         dreg = alloc_ireg_mp (cfg);
10939
10940                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10941                                                 MonoInst *offset_ins;
10942
10943                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10944                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10945                                         } else {
10946                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10947                                         }
10948                                         ins->klass = mono_class_from_mono_type (field->type);
10949                                         ins->type = STACK_MP;
10950                                         *sp++ = ins;
10951                                 } else {
10952                                         MonoInst *load;
10953
10954                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10955
10956                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10957                                                 MonoInst *offset_ins;
10958
10959                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10960                                                 dreg = alloc_ireg_mp (cfg);
10961                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10962                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
10963                                         } else {
10964                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
10965                                         }
10966                                         load->flags |= ins_flag;
10967                                         if (sp [0]->opcode != OP_LDADDR)
10968                                                 load->flags |= MONO_INST_FAULT;
10969                                         *sp++ = load;
10970                                 }
10971                         }
10972
10973                         if (is_instance) {
10974                                 ins_flag = 0;
10975                                 ip += 5;
10976                                 break;
10977                         }
10978
10979                         /* STATIC CASE */
10980                         context_used = mini_class_check_context_used (cfg, klass);
10981
10982                         ftype = mono_field_get_type (field);
10983
10984                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
10985                                 UNVERIFIED;
10986
10987                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10988                          * to be called here.
10989                          */
10990                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10991                                 mono_class_vtable (cfg->domain, klass);
10992                                 CHECK_TYPELOAD (klass);
10993                         }
10994                         mono_domain_lock (cfg->domain);
10995                         if (cfg->domain->special_static_fields)
10996                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10997                         mono_domain_unlock (cfg->domain);
10998
10999                         is_special_static = mono_class_field_is_special_static (field);
11000
11001                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11002                                 thread_ins = mono_get_thread_intrinsic (cfg);
11003                         else
11004                                 thread_ins = NULL;
11005
11006                         /* Generate IR to compute the field address */
11007                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11008                                 /*
11009                                  * Fast access to TLS data
11010                                  * Inline version of get_thread_static_data () in
11011                                  * threads.c.
11012                                  */
11013                                 guint32 offset;
11014                                 int idx, static_data_reg, array_reg, dreg;
11015
11016                                 GSHAREDVT_FAILURE (op);
11017
11018                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11019                                 static_data_reg = alloc_ireg (cfg);
11020                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11021
11022                                 if (cfg->compile_aot) {
11023                                         int offset_reg, offset2_reg, idx_reg;
11024
11025                                         /* For TLS variables, this will return the TLS offset */
11026                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11027                                         offset_reg = ins->dreg;
11028                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11029                                         idx_reg = alloc_ireg (cfg);
11030                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11031                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11032                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11033                                         array_reg = alloc_ireg (cfg);
11034                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11035                                         offset2_reg = alloc_ireg (cfg);
11036                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11037                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11038                                         dreg = alloc_ireg (cfg);
11039                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11040                                 } else {
11041                                         offset = (gsize)addr & 0x7fffffff;
11042                                         idx = offset & 0x3f;
11043
11044                                         array_reg = alloc_ireg (cfg);
11045                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11046                                         dreg = alloc_ireg (cfg);
11047                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11048                                 }
11049                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11050                                         (cfg->compile_aot && is_special_static) ||
11051                                         (context_used && is_special_static)) {
11052                                 MonoInst *iargs [2];
11053
11054                                 g_assert (field->parent);
11055                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11056                                 if (context_used) {
11057                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11058                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11059                                 } else {
11060                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11061                                 }
11062                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11063                         } else if (context_used) {
11064                                 MonoInst *static_data;
11065
11066                                 /*
11067                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11068                                         method->klass->name_space, method->klass->name, method->name,
11069                                         depth, field->offset);
11070                                 */
11071
11072                                 if (mono_class_needs_cctor_run (klass, method))
11073                                         emit_generic_class_init (cfg, klass, &bblock);
11074
11075                                 /*
11076                                  * The pointer we're computing here is
11077                                  *
11078                                  *   super_info.static_data + field->offset
11079                                  */
11080                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11081                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11082
11083                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
11084                                         MonoInst *offset_ins;
11085
11086                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11087                                         dreg = alloc_ireg_mp (cfg);
11088                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11089                                 } else if (field->offset == 0) {
11090                                         ins = static_data;
11091                                 } else {
11092                                         int addr_reg = mono_alloc_preg (cfg);
11093                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11094                                 }
11095                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11096                                 MonoInst *iargs [2];
11097
11098                                 g_assert (field->parent);
11099                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11100                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11101                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11102                         } else {
11103                                 MonoVTable *vtable = NULL;
11104
11105                                 if (!cfg->compile_aot)
11106                                         vtable = mono_class_vtable (cfg->domain, klass);
11107                                 CHECK_TYPELOAD (klass);
11108
11109                                 if (!addr) {
11110                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11111                                                 if (!(g_slist_find (class_inits, klass))) {
11112                                                         emit_class_init (cfg, klass, &bblock);
11113                                                         if (cfg->verbose_level > 2)
11114                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11115                                                         class_inits = g_slist_prepend (class_inits, klass);
11116                                                 }
11117                                         } else {
11118                                                 if (cfg->run_cctors) {
11119                                                         MonoException *ex;
11120                                                         /* This makes so that inline cannot trigger */
11121                                                         /* .cctors: too many apps depend on them */
11122                                                         /* running with a specific order... */
11123                                                         g_assert (vtable);
11124                                                         if (! vtable->initialized)
11125                                                                 INLINE_FAILURE ("class init");
11126                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
11127                                                         if (ex) {
11128                                                                 set_exception_object (cfg, ex);
11129                                                                 goto exception_exit;
11130                                                         }
11131                                                 }
11132                                         }
11133                                         if (cfg->compile_aot)
11134                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11135                                         else {
11136                                                 g_assert (vtable);
11137                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11138                                                 g_assert (addr);
11139                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11140                                         }
11141                                 } else {
11142                                         MonoInst *iargs [1];
11143                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11144                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11145                                 }
11146                         }
11147
11148                         /* Generate IR to do the actual load/store operation */
11149
11150                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11151                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11152                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11153                         }
11154
11155                         if (op == CEE_LDSFLDA) {
11156                                 ins->klass = mono_class_from_mono_type (ftype);
11157                                 ins->type = STACK_PTR;
11158                                 *sp++ = ins;
11159                         } else if (op == CEE_STSFLD) {
11160                                 MonoInst *store;
11161
11162                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11163                                 store->flags |= ins_flag;
11164                         } else {
11165                                 gboolean is_const = FALSE;
11166                                 MonoVTable *vtable = NULL;
11167                                 gpointer addr = NULL;
11168
11169                                 if (!context_used) {
11170                                         vtable = mono_class_vtable (cfg->domain, klass);
11171                                         CHECK_TYPELOAD (klass);
11172                                 }
11173                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11174                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11175                                         int ro_type = ftype->type;
11176                                         if (!addr)
11177                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11178                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11179                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11180                                         }
11181
11182                                         GSHAREDVT_FAILURE (op);
11183
11184                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11185                                         is_const = TRUE;
11186                                         switch (ro_type) {
11187                                         case MONO_TYPE_BOOLEAN:
11188                                         case MONO_TYPE_U1:
11189                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11190                                                 sp++;
11191                                                 break;
11192                                         case MONO_TYPE_I1:
11193                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11194                                                 sp++;
11195                                                 break;
11196                                         case MONO_TYPE_CHAR:
11197                                         case MONO_TYPE_U2:
11198                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11199                                                 sp++;
11200                                                 break;
11201                                         case MONO_TYPE_I2:
11202                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11203                                                 sp++;
11204                                                 break;
11205                                                 break;
11206                                         case MONO_TYPE_I4:
11207                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11208                                                 sp++;
11209                                                 break;
11210                                         case MONO_TYPE_U4:
11211                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11212                                                 sp++;
11213                                                 break;
11214                                         case MONO_TYPE_I:
11215                                         case MONO_TYPE_U:
11216                                         case MONO_TYPE_PTR:
11217                                         case MONO_TYPE_FNPTR:
11218                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11219                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11220                                                 sp++;
11221                                                 break;
11222                                         case MONO_TYPE_STRING:
11223                                         case MONO_TYPE_OBJECT:
11224                                         case MONO_TYPE_CLASS:
11225                                         case MONO_TYPE_SZARRAY:
11226                                         case MONO_TYPE_ARRAY:
11227                                                 if (!mono_gc_is_moving ()) {
11228                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11229                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11230                                                         sp++;
11231                                                 } else {
11232                                                         is_const = FALSE;
11233                                                 }
11234                                                 break;
11235                                         case MONO_TYPE_I8:
11236                                         case MONO_TYPE_U8:
11237                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11238                                                 sp++;
11239                                                 break;
11240                                         case MONO_TYPE_R4:
11241                                         case MONO_TYPE_R8:
11242                                         case MONO_TYPE_VALUETYPE:
11243                                         default:
11244                                                 is_const = FALSE;
11245                                                 break;
11246                                         }
11247                                 }
11248
11249                                 if (!is_const) {
11250                                         MonoInst *load;
11251
11252                                         CHECK_STACK_OVF (1);
11253
11254                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11255                                         load->flags |= ins_flag;
11256                                         ins_flag = 0;
11257                                         *sp++ = load;
11258                                 }
11259                         }
11260
11261                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11262                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11263                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11264                         }
11265
11266                         ins_flag = 0;
11267                         ip += 5;
11268                         break;
11269                 }
11270                 case CEE_STOBJ:
11271                         CHECK_STACK (2);
11272                         sp -= 2;
11273                         CHECK_OPSIZE (5);
11274                         token = read32 (ip + 1);
11275                         klass = mini_get_class (method, token, generic_context);
11276                         CHECK_TYPELOAD (klass);
11277                         if (ins_flag & MONO_INST_VOLATILE) {
11278                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11279                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11280                         }
11281                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11282                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11283                         ins->flags |= ins_flag;
11284                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11285                                         generic_class_is_reference_type (cfg, klass)) {
11286                                 /* insert call to write barrier */
11287                                 emit_write_barrier (cfg, sp [0], sp [1]);
11288                         }
11289                         ins_flag = 0;
11290                         ip += 5;
11291                         inline_costs += 1;
11292                         break;
11293
11294                         /*
11295                          * Array opcodes
11296                          */
11297                 case CEE_NEWARR: {
11298                         MonoInst *len_ins;
11299                         const char *data_ptr;
11300                         int data_size = 0;
11301                         guint32 field_token;
11302
11303                         CHECK_STACK (1);
11304                         --sp;
11305
11306                         CHECK_OPSIZE (5);
11307                         token = read32 (ip + 1);
11308
11309                         klass = mini_get_class (method, token, generic_context);
11310                         CHECK_TYPELOAD (klass);
11311
11312                         context_used = mini_class_check_context_used (cfg, klass);
11313
11314                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11315                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11316                                 ins->sreg1 = sp [0]->dreg;
11317                                 ins->type = STACK_I4;
11318                                 ins->dreg = alloc_ireg (cfg);
11319                                 MONO_ADD_INS (cfg->cbb, ins);
11320                                 *sp = mono_decompose_opcode (cfg, ins, &bblock);
11321                         }
11322
11323                         if (context_used) {
11324                                 MonoInst *args [3];
11325                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11326                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11327
11328                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11329
11330                                 /* vtable */
11331                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11332                                         array_class, MONO_RGCTX_INFO_VTABLE);
11333                                 /* array len */
11334                                 args [1] = sp [0];
11335
11336                                 if (managed_alloc)
11337                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11338                                 else
11339                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
11340                         } else {
11341                                 if (cfg->opt & MONO_OPT_SHARED) {
11342                                         /* Decompose now to avoid problems with references to the domainvar */
11343                                         MonoInst *iargs [3];
11344
11345                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11346                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11347                                         iargs [2] = sp [0];
11348
11349                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11350                                 } else {
11351                                         /* Decompose later since it is needed by abcrem */
11352                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11353                                         mono_class_vtable (cfg->domain, array_type);
11354                                         CHECK_TYPELOAD (array_type);
11355
11356                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11357                                         ins->dreg = alloc_ireg_ref (cfg);
11358                                         ins->sreg1 = sp [0]->dreg;
11359                                         ins->inst_newa_class = klass;
11360                                         ins->type = STACK_OBJ;
11361                                         ins->klass = array_type;
11362                                         MONO_ADD_INS (cfg->cbb, ins);
11363                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11364                                         cfg->cbb->has_array_access = TRUE;
11365
11366                                         /* Needed so mono_emit_load_get_addr () gets called */
11367                                         mono_get_got_var (cfg);
11368                                 }
11369                         }
11370
11371                         len_ins = sp [0];
11372                         ip += 5;
11373                         *sp++ = ins;
11374                         inline_costs += 1;
11375
11376                         /*
11377                          * we inline/optimize the initialization sequence if possible.
11378                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11379                          * for small sizes open code the memcpy
11380                          * ensure the rva field is big enough
11381                          */
11382                         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))) {
11383                                 MonoMethod *memcpy_method = get_memcpy_method ();
11384                                 MonoInst *iargs [3];
11385                                 int add_reg = alloc_ireg_mp (cfg);
11386
11387                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11388                                 if (cfg->compile_aot) {
11389                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11390                                 } else {
11391                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11392                                 }
11393                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11394                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11395                                 ip += 11;
11396                         }
11397
11398                         break;
11399                 }
11400                 case CEE_LDLEN:
11401                         CHECK_STACK (1);
11402                         --sp;
11403                         if (sp [0]->type != STACK_OBJ)
11404                                 UNVERIFIED;
11405
11406                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11407                         ins->dreg = alloc_preg (cfg);
11408                         ins->sreg1 = sp [0]->dreg;
11409                         ins->type = STACK_I4;
11410                         /* This flag will be inherited by the decomposition */
11411                         ins->flags |= MONO_INST_FAULT;
11412                         MONO_ADD_INS (cfg->cbb, ins);
11413                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11414                         cfg->cbb->has_array_access = TRUE;
11415                         ip ++;
11416                         *sp++ = ins;
11417                         break;
11418                 case CEE_LDELEMA:
11419                         CHECK_STACK (2);
11420                         sp -= 2;
11421                         CHECK_OPSIZE (5);
11422                         if (sp [0]->type != STACK_OBJ)
11423                                 UNVERIFIED;
11424
11425                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11426
11427                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11428                         CHECK_TYPELOAD (klass);
11429                         /* we need to make sure that this array is exactly the type it needs
11430                          * to be for correctness. the wrappers are lax with their usage
11431                          * so we need to ignore them here
11432                          */
11433                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11434                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11435                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11436                                 CHECK_TYPELOAD (array_class);
11437                         }
11438
11439                         readonly = FALSE;
11440                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11441                         *sp++ = ins;
11442                         ip += 5;
11443                         break;
11444                 case CEE_LDELEM:
11445                 case CEE_LDELEM_I1:
11446                 case CEE_LDELEM_U1:
11447                 case CEE_LDELEM_I2:
11448                 case CEE_LDELEM_U2:
11449                 case CEE_LDELEM_I4:
11450                 case CEE_LDELEM_U4:
11451                 case CEE_LDELEM_I8:
11452                 case CEE_LDELEM_I:
11453                 case CEE_LDELEM_R4:
11454                 case CEE_LDELEM_R8:
11455                 case CEE_LDELEM_REF: {
11456                         MonoInst *addr;
11457
11458                         CHECK_STACK (2);
11459                         sp -= 2;
11460
11461                         if (*ip == CEE_LDELEM) {
11462                                 CHECK_OPSIZE (5);
11463                                 token = read32 (ip + 1);
11464                                 klass = mini_get_class (method, token, generic_context);
11465                                 CHECK_TYPELOAD (klass);
11466                                 mono_class_init (klass);
11467                         }
11468                         else
11469                                 klass = array_access_to_klass (*ip);
11470
11471                         if (sp [0]->type != STACK_OBJ)
11472                                 UNVERIFIED;
11473
11474                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11475
11476                         if (mini_is_gsharedvt_variable_klass (cfg, klass)) {
11477                                 // FIXME-VT: OP_ICONST optimization
11478                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11479                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11480                                 ins->opcode = OP_LOADV_MEMBASE;
11481                         } else if (sp [1]->opcode == OP_ICONST) {
11482                                 int array_reg = sp [0]->dreg;
11483                                 int index_reg = sp [1]->dreg;
11484                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11485
11486                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11487                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11488                         } else {
11489                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11490                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11491                         }
11492                         *sp++ = ins;
11493                         if (*ip == CEE_LDELEM)
11494                                 ip += 5;
11495                         else
11496                                 ++ip;
11497                         break;
11498                 }
11499                 case CEE_STELEM_I:
11500                 case CEE_STELEM_I1:
11501                 case CEE_STELEM_I2:
11502                 case CEE_STELEM_I4:
11503                 case CEE_STELEM_I8:
11504                 case CEE_STELEM_R4:
11505                 case CEE_STELEM_R8:
11506                 case CEE_STELEM_REF:
11507                 case CEE_STELEM: {
11508                         CHECK_STACK (3);
11509                         sp -= 3;
11510
11511                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11512
11513                         if (*ip == CEE_STELEM) {
11514                                 CHECK_OPSIZE (5);
11515                                 token = read32 (ip + 1);
11516                                 klass = mini_get_class (method, token, generic_context);
11517                                 CHECK_TYPELOAD (klass);
11518                                 mono_class_init (klass);
11519                         }
11520                         else
11521                                 klass = array_access_to_klass (*ip);
11522
11523                         if (sp [0]->type != STACK_OBJ)
11524                                 UNVERIFIED;
11525
11526                         emit_array_store (cfg, klass, sp, TRUE);
11527
11528                         if (*ip == CEE_STELEM)
11529                                 ip += 5;
11530                         else
11531                                 ++ip;
11532                         inline_costs += 1;
11533                         break;
11534                 }
11535                 case CEE_CKFINITE: {
11536                         CHECK_STACK (1);
11537                         --sp;
11538
11539                         MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11540                         ins->sreg1 = sp [0]->dreg;
11541                         ins->dreg = alloc_freg (cfg);
11542                         ins->type = STACK_R8;
11543                         MONO_ADD_INS (bblock, ins);
11544
11545                         *sp++ = mono_decompose_opcode (cfg, ins, &bblock);
11546
11547                         ++ip;
11548                         break;
11549                 }
11550                 case CEE_REFANYVAL: {
11551                         MonoInst *src_var, *src;
11552
11553                         int klass_reg = alloc_preg (cfg);
11554                         int dreg = alloc_preg (cfg);
11555
11556                         GSHAREDVT_FAILURE (*ip);
11557
11558                         CHECK_STACK (1);
11559                         MONO_INST_NEW (cfg, ins, *ip);
11560                         --sp;
11561                         CHECK_OPSIZE (5);
11562                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11563                         CHECK_TYPELOAD (klass);
11564
11565                         context_used = mini_class_check_context_used (cfg, klass);
11566
11567                         // FIXME:
11568                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11569                         if (!src_var)
11570                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11571                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11572                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11573
11574                         if (context_used) {
11575                                 MonoInst *klass_ins;
11576
11577                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
11578                                                 klass, MONO_RGCTX_INFO_KLASS);
11579
11580                                 // FIXME:
11581                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11582                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11583                         } else {
11584                                 mini_emit_class_check (cfg, klass_reg, klass);
11585                         }
11586                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11587                         ins->type = STACK_MP;
11588                         *sp++ = ins;
11589                         ip += 5;
11590                         break;
11591                 }
11592                 case CEE_MKREFANY: {
11593                         MonoInst *loc, *addr;
11594
11595                         GSHAREDVT_FAILURE (*ip);
11596
11597                         CHECK_STACK (1);
11598                         MONO_INST_NEW (cfg, ins, *ip);
11599                         --sp;
11600                         CHECK_OPSIZE (5);
11601                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11602                         CHECK_TYPELOAD (klass);
11603
11604                         context_used = mini_class_check_context_used (cfg, klass);
11605
11606                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11607                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11608
11609                         if (context_used) {
11610                                 MonoInst *const_ins;
11611                                 int type_reg = alloc_preg (cfg);
11612
11613                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11614                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11615                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11616                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11617                         } else if (cfg->compile_aot) {
11618                                 int const_reg = alloc_preg (cfg);
11619                                 int type_reg = alloc_preg (cfg);
11620
11621                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11622                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11623                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11624                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11625                         } else {
11626                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
11627                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
11628                         }
11629                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11630
11631                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11632                         ins->type = STACK_VTYPE;
11633                         ins->klass = mono_defaults.typed_reference_class;
11634                         *sp++ = ins;
11635                         ip += 5;
11636                         break;
11637                 }
11638                 case CEE_LDTOKEN: {
11639                         gpointer handle;
11640                         MonoClass *handle_class;
11641
11642                         CHECK_STACK_OVF (1);
11643
11644                         CHECK_OPSIZE (5);
11645                         n = read32 (ip + 1);
11646
11647                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11648                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11649                                 handle = mono_method_get_wrapper_data (method, n);
11650                                 handle_class = mono_method_get_wrapper_data (method, n + 1);
11651                                 if (handle_class == mono_defaults.typehandle_class)
11652                                         handle = &((MonoClass*)handle)->byval_arg;
11653                         }
11654                         else {
11655                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11656                                 CHECK_CFG_ERROR;
11657                         }
11658                         if (!handle)
11659                                 LOAD_ERROR;
11660                         mono_class_init (handle_class);
11661                         if (cfg->generic_sharing_context) {
11662                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11663                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11664                                         /* This case handles ldtoken
11665                                            of an open type, like for
11666                                            typeof(Gen<>). */
11667                                         context_used = 0;
11668                                 } else if (handle_class == mono_defaults.typehandle_class) {
11669                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type (handle));
11670                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11671                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11672                                 else if (handle_class == mono_defaults.methodhandle_class)
11673                                         context_used = mini_method_check_context_used (cfg, handle);
11674                                 else
11675                                         g_assert_not_reached ();
11676                         }
11677
11678                         if ((cfg->opt & MONO_OPT_SHARED) &&
11679                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11680                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11681                                 MonoInst *addr, *vtvar, *iargs [3];
11682                                 int method_context_used;
11683
11684                                 method_context_used = mini_method_check_context_used (cfg, method);
11685
11686                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11687
11688                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11689                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11690                                 if (method_context_used) {
11691                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11692                                                 method, MONO_RGCTX_INFO_METHOD);
11693                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11694                                 } else {
11695                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11696                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11697                                 }
11698                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11699
11700                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11701
11702                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11703                         } else {
11704                                 if ((ip + 5 < end) && ip_in_bb (cfg, bblock, ip + 5) &&
11705                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11706                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11707                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11708                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11709                                         MonoClass *tclass = mono_class_from_mono_type (handle);
11710
11711                                         mono_class_init (tclass);
11712                                         if (context_used) {
11713                                                 ins = emit_get_rgctx_klass (cfg, context_used,
11714                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11715                                         } else if (cfg->compile_aot) {
11716                                                 if (method->wrapper_type) {
11717                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
11718                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11719                                                                 /* Special case for static synchronized wrappers */
11720                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11721                                                         } else {
11722                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11723                                                                 /* FIXME: n is not a normal token */
11724                                                                 DISABLE_AOT (cfg);
11725                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11726                                                         }
11727                                                 } else {
11728                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11729                                                 }
11730                                         } else {
11731                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, handle));
11732                                         }
11733                                         ins->type = STACK_OBJ;
11734                                         ins->klass = cmethod->klass;
11735                                         ip += 5;
11736                                 } else {
11737                                         MonoInst *addr, *vtvar;
11738
11739                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11740
11741                                         if (context_used) {
11742                                                 if (handle_class == mono_defaults.typehandle_class) {
11743                                                         ins = emit_get_rgctx_klass (cfg, context_used,
11744                                                                         mono_class_from_mono_type (handle),
11745                                                                         MONO_RGCTX_INFO_TYPE);
11746                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11747                                                         ins = emit_get_rgctx_method (cfg, context_used,
11748                                                                         handle, MONO_RGCTX_INFO_METHOD);
11749                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11750                                                         ins = emit_get_rgctx_field (cfg, context_used,
11751                                                                         handle, MONO_RGCTX_INFO_CLASS_FIELD);
11752                                                 } else {
11753                                                         g_assert_not_reached ();
11754                                                 }
11755                                         } else if (cfg->compile_aot) {
11756                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11757                                         } else {
11758                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11759                                         }
11760                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11761                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11762                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11763                                 }
11764                         }
11765
11766                         *sp++ = ins;
11767                         ip += 5;
11768                         break;
11769                 }
11770                 case CEE_THROW:
11771                         CHECK_STACK (1);
11772                         MONO_INST_NEW (cfg, ins, OP_THROW);
11773                         --sp;
11774                         ins->sreg1 = sp [0]->dreg;
11775                         ip++;
11776                         bblock->out_of_line = TRUE;
11777                         MONO_ADD_INS (bblock, ins);
11778                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11779                         MONO_ADD_INS (bblock, ins);
11780                         sp = stack_start;
11781
11782                         link_bblock (cfg, bblock, end_bblock);
11783                         start_new_bblock = 1;
11784                         break;
11785                 case CEE_ENDFINALLY:
11786                         /* mono_save_seq_point_info () depends on this */
11787                         if (sp != stack_start)
11788                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11789                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11790                         MONO_ADD_INS (bblock, ins);
11791                         ip++;
11792                         start_new_bblock = 1;
11793
11794                         /*
11795                          * Control will leave the method so empty the stack, otherwise
11796                          * the next basic block will start with a nonempty stack.
11797                          */
11798                         while (sp != stack_start) {
11799                                 sp--;
11800                         }
11801                         break;
11802                 case CEE_LEAVE:
11803                 case CEE_LEAVE_S: {
11804                         GList *handlers;
11805
11806                         if (*ip == CEE_LEAVE) {
11807                                 CHECK_OPSIZE (5);
11808                                 target = ip + 5 + (gint32)read32(ip + 1);
11809                         } else {
11810                                 CHECK_OPSIZE (2);
11811                                 target = ip + 2 + (signed char)(ip [1]);
11812                         }
11813
11814                         /* empty the stack */
11815                         while (sp != stack_start) {
11816                                 sp--;
11817                         }
11818
11819                         /*
11820                          * If this leave statement is in a catch block, check for a
11821                          * pending exception, and rethrow it if necessary.
11822                          * We avoid doing this in runtime invoke wrappers, since those are called
11823                          * by native code which excepts the wrapper to catch all exceptions.
11824                          */
11825                         for (i = 0; i < header->num_clauses; ++i) {
11826                                 MonoExceptionClause *clause = &header->clauses [i];
11827
11828                                 /*
11829                                  * Use <= in the final comparison to handle clauses with multiple
11830                                  * leave statements, like in bug #78024.
11831                                  * The ordering of the exception clauses guarantees that we find the
11832                                  * innermost clause.
11833                                  */
11834                                 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) {
11835                                         MonoInst *exc_ins;
11836                                         MonoBasicBlock *dont_throw;
11837
11838                                         /*
11839                                           MonoInst *load;
11840
11841                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11842                                         */
11843
11844                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11845
11846                                         NEW_BBLOCK (cfg, dont_throw);
11847
11848                                         /*
11849                                          * Currently, we always rethrow the abort exception, despite the
11850                                          * fact that this is not correct. See thread6.cs for an example.
11851                                          * But propagating the abort exception is more important than
11852                                          * getting the sematics right.
11853                                          */
11854                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11855                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11856                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11857
11858                                         MONO_START_BB (cfg, dont_throw);
11859                                         bblock = cfg->cbb;
11860                                 }
11861                         }
11862
11863                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11864                                 GList *tmp;
11865                                 MonoExceptionClause *clause;
11866
11867                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11868                                         clause = tmp->data;
11869                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11870                                         g_assert (tblock);
11871                                         link_bblock (cfg, bblock, tblock);
11872                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11873                                         ins->inst_target_bb = tblock;
11874                                         ins->inst_eh_block = clause;
11875                                         MONO_ADD_INS (bblock, ins);
11876                                         bblock->has_call_handler = 1;
11877                                         if (COMPILE_LLVM (cfg)) {
11878                                                 MonoBasicBlock *target_bb;
11879
11880                                                 /*
11881                                                  * Link the finally bblock with the target, since it will
11882                                                  * conceptually branch there.
11883                                                  * FIXME: Have to link the bblock containing the endfinally.
11884                                                  */
11885                                                 GET_BBLOCK (cfg, target_bb, target);
11886                                                 link_bblock (cfg, tblock, target_bb);
11887                                         }
11888                                 }
11889                                 g_list_free (handlers);
11890                         }
11891
11892                         MONO_INST_NEW (cfg, ins, OP_BR);
11893                         MONO_ADD_INS (bblock, ins);
11894                         GET_BBLOCK (cfg, tblock, target);
11895                         link_bblock (cfg, bblock, tblock);
11896                         ins->inst_target_bb = tblock;
11897                         start_new_bblock = 1;
11898
11899                         if (*ip == CEE_LEAVE)
11900                                 ip += 5;
11901                         else
11902                                 ip += 2;
11903
11904                         break;
11905                 }
11906
11907                         /*
11908                          * Mono specific opcodes
11909                          */
11910                 case MONO_CUSTOM_PREFIX: {
11911
11912                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11913
11914                         CHECK_OPSIZE (2);
11915                         switch (ip [1]) {
11916                         case CEE_MONO_ICALL: {
11917                                 gpointer func;
11918                                 MonoJitICallInfo *info;
11919
11920                                 token = read32 (ip + 2);
11921                                 func = mono_method_get_wrapper_data (method, token);
11922                                 info = mono_find_jit_icall_by_addr (func);
11923                                 if (!info)
11924                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11925                                 g_assert (info);
11926
11927                                 CHECK_STACK (info->sig->param_count);
11928                                 sp -= info->sig->param_count;
11929
11930                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11931                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11932                                         *sp++ = ins;
11933
11934                                 ip += 6;
11935                                 inline_costs += 10 * num_calls++;
11936
11937                                 break;
11938                         }
11939                         case CEE_MONO_LDPTR_CARD_TABLE: {
11940                                 int shift_bits;
11941                                 gpointer card_mask;
11942                                 CHECK_STACK_OVF (1);
11943
11944                                 if (cfg->compile_aot)
11945                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11946                                 else
11947                                         EMIT_NEW_PCONST (cfg, ins, mono_gc_get_card_table (&shift_bits, &card_mask));
11948
11949                                 *sp++ = ins;
11950                                 ip += 2;
11951                                 inline_costs += 10 * num_calls++;
11952                                 break;
11953                         }
11954                         case CEE_MONO_LDPTR_NURSERY_START: {
11955                                 int shift_bits;
11956                                 size_t size;
11957                                 CHECK_STACK_OVF (1);
11958
11959                                 if (cfg->compile_aot)
11960                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11961                                 else
11962                                         EMIT_NEW_PCONST (cfg, ins, mono_gc_get_nursery (&shift_bits, &size));
11963
11964                                 *sp++ = ins;
11965                                 ip += 2;
11966                                 inline_costs += 10 * num_calls++;
11967                                 break;
11968                         }
11969                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11970                                 CHECK_STACK_OVF (1);
11971
11972                                 if (cfg->compile_aot)
11973                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11974                                 else
11975                                         EMIT_NEW_PCONST (cfg, ins, mono_thread_interruption_request_flag ());
11976
11977                                 *sp++ = ins;
11978                                 ip += 2;
11979                                 inline_costs += 10 * num_calls++;
11980                                 break;
11981                         }
11982                         case CEE_MONO_LDPTR: {
11983                                 gpointer ptr;
11984
11985                                 CHECK_STACK_OVF (1);
11986                                 CHECK_OPSIZE (6);
11987                                 token = read32 (ip + 2);
11988
11989                                 ptr = mono_method_get_wrapper_data (method, token);
11990                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11991                                 *sp++ = ins;
11992                                 ip += 6;
11993                                 inline_costs += 10 * num_calls++;
11994                                 /* Can't embed random pointers into AOT code */
11995                                 DISABLE_AOT (cfg);
11996                                 break;
11997                         }
11998                         case CEE_MONO_JIT_ICALL_ADDR: {
11999                                 MonoJitICallInfo *callinfo;
12000                                 gpointer ptr;
12001
12002                                 CHECK_STACK_OVF (1);
12003                                 CHECK_OPSIZE (6);
12004                                 token = read32 (ip + 2);
12005
12006                                 ptr = mono_method_get_wrapper_data (method, token);
12007                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12008                                 g_assert (callinfo);
12009                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12010                                 *sp++ = ins;
12011                                 ip += 6;
12012                                 inline_costs += 10 * num_calls++;
12013                                 break;
12014                         }
12015                         case CEE_MONO_ICALL_ADDR: {
12016                                 MonoMethod *cmethod;
12017                                 gpointer ptr;
12018
12019                                 CHECK_STACK_OVF (1);
12020                                 CHECK_OPSIZE (6);
12021                                 token = read32 (ip + 2);
12022
12023                                 cmethod = mono_method_get_wrapper_data (method, token);
12024
12025                                 if (cfg->compile_aot) {
12026                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12027                                 } else {
12028                                         ptr = mono_lookup_internal_call (cmethod);
12029                                         g_assert (ptr);
12030                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12031                                 }
12032                                 *sp++ = ins;
12033                                 ip += 6;
12034                                 break;
12035                         }
12036                         case CEE_MONO_VTADDR: {
12037                                 MonoInst *src_var, *src;
12038
12039                                 CHECK_STACK (1);
12040                                 --sp;
12041
12042                                 // FIXME:
12043                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12044                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12045                                 *sp++ = src;
12046                                 ip += 2;
12047                                 break;
12048                         }
12049                         case CEE_MONO_NEWOBJ: {
12050                                 MonoInst *iargs [2];
12051
12052                                 CHECK_STACK_OVF (1);
12053                                 CHECK_OPSIZE (6);
12054                                 token = read32 (ip + 2);
12055                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12056                                 mono_class_init (klass);
12057                                 NEW_DOMAINCONST (cfg, iargs [0]);
12058                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12059                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12060                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12061                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
12062                                 ip += 6;
12063                                 inline_costs += 10 * num_calls++;
12064                                 break;
12065                         }
12066                         case CEE_MONO_OBJADDR:
12067                                 CHECK_STACK (1);
12068                                 --sp;
12069                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12070                                 ins->dreg = alloc_ireg_mp (cfg);
12071                                 ins->sreg1 = sp [0]->dreg;
12072                                 ins->type = STACK_MP;
12073                                 MONO_ADD_INS (cfg->cbb, ins);
12074                                 *sp++ = ins;
12075                                 ip += 2;
12076                                 break;
12077                         case CEE_MONO_LDNATIVEOBJ:
12078                                 /*
12079                                  * Similar to LDOBJ, but instead load the unmanaged
12080                                  * representation of the vtype to the stack.
12081                                  */
12082                                 CHECK_STACK (1);
12083                                 CHECK_OPSIZE (6);
12084                                 --sp;
12085                                 token = read32 (ip + 2);
12086                                 klass = mono_method_get_wrapper_data (method, token);
12087                                 g_assert (klass->valuetype);
12088                                 mono_class_init (klass);
12089
12090                                 {
12091                                         MonoInst *src, *dest, *temp;
12092
12093                                         src = sp [0];
12094                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12095                                         temp->backend.is_pinvoke = 1;
12096                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12097                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12098
12099                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12100                                         dest->type = STACK_VTYPE;
12101                                         dest->klass = klass;
12102
12103                                         *sp ++ = dest;
12104                                         ip += 6;
12105                                 }
12106                                 break;
12107                         case CEE_MONO_RETOBJ: {
12108                                 /*
12109                                  * Same as RET, but return the native representation of a vtype
12110                                  * to the caller.
12111                                  */
12112                                 g_assert (cfg->ret);
12113                                 g_assert (mono_method_signature (method)->pinvoke);
12114                                 CHECK_STACK (1);
12115                                 --sp;
12116
12117                                 CHECK_OPSIZE (6);
12118                                 token = read32 (ip + 2);
12119                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12120
12121                                 if (!cfg->vret_addr) {
12122                                         g_assert (cfg->ret_var_is_local);
12123
12124                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12125                                 } else {
12126                                         EMIT_NEW_RETLOADA (cfg, ins);
12127                                 }
12128                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12129
12130                                 if (sp != stack_start)
12131                                         UNVERIFIED;
12132
12133                                 MONO_INST_NEW (cfg, ins, OP_BR);
12134                                 ins->inst_target_bb = end_bblock;
12135                                 MONO_ADD_INS (bblock, ins);
12136                                 link_bblock (cfg, bblock, end_bblock);
12137                                 start_new_bblock = 1;
12138                                 ip += 6;
12139                                 break;
12140                         }
12141                         case CEE_MONO_CISINST:
12142                         case CEE_MONO_CCASTCLASS: {
12143                                 int token;
12144                                 CHECK_STACK (1);
12145                                 --sp;
12146                                 CHECK_OPSIZE (6);
12147                                 token = read32 (ip + 2);
12148                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12149                                 if (ip [1] == CEE_MONO_CISINST)
12150                                         ins = handle_cisinst (cfg, klass, sp [0]);
12151                                 else
12152                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12153                                 bblock = cfg->cbb;
12154                                 *sp++ = ins;
12155                                 ip += 6;
12156                                 break;
12157                         }
12158                         case CEE_MONO_SAVE_LMF:
12159                         case CEE_MONO_RESTORE_LMF:
12160 #ifdef MONO_ARCH_HAVE_LMF_OPS
12161                                 MONO_INST_NEW (cfg, ins, (ip [1] == CEE_MONO_SAVE_LMF) ? OP_SAVE_LMF : OP_RESTORE_LMF);
12162                                 MONO_ADD_INS (bblock, ins);
12163                                 cfg->need_lmf_area = TRUE;
12164 #endif
12165                                 ip += 2;
12166                                 break;
12167                         case CEE_MONO_CLASSCONST:
12168                                 CHECK_STACK_OVF (1);
12169                                 CHECK_OPSIZE (6);
12170                                 token = read32 (ip + 2);
12171                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12172                                 *sp++ = ins;
12173                                 ip += 6;
12174                                 inline_costs += 10 * num_calls++;
12175                                 break;
12176                         case CEE_MONO_NOT_TAKEN:
12177                                 bblock->out_of_line = TRUE;
12178                                 ip += 2;
12179                                 break;
12180                         case CEE_MONO_TLS: {
12181                                 int key;
12182
12183                                 CHECK_STACK_OVF (1);
12184                                 CHECK_OPSIZE (6);
12185                                 key = (gint32)read32 (ip + 2);
12186                                 g_assert (key < TLS_KEY_NUM);
12187
12188                                 ins = mono_create_tls_get (cfg, key);
12189                                 if (!ins) {
12190                                         if (cfg->compile_aot) {
12191                                                 DISABLE_AOT (cfg);
12192                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12193                                                 ins->dreg = alloc_preg (cfg);
12194                                                 ins->type = STACK_PTR;
12195                                         } else {
12196                                                 g_assert_not_reached ();
12197                                         }
12198                                 }
12199                                 ins->type = STACK_PTR;
12200                                 MONO_ADD_INS (bblock, ins);
12201                                 *sp++ = ins;
12202                                 ip += 6;
12203                                 break;
12204                         }
12205                         case CEE_MONO_DYN_CALL: {
12206                                 MonoCallInst *call;
12207
12208                                 /* It would be easier to call a trampoline, but that would put an
12209                                  * extra frame on the stack, confusing exception handling. So
12210                                  * implement it inline using an opcode for now.
12211                                  */
12212
12213                                 if (!cfg->dyn_call_var) {
12214                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12215                                         /* prevent it from being register allocated */
12216                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12217                                 }
12218
12219                                 /* Has to use a call inst since it local regalloc expects it */
12220                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12221                                 ins = (MonoInst*)call;
12222                                 sp -= 2;
12223                                 ins->sreg1 = sp [0]->dreg;
12224                                 ins->sreg2 = sp [1]->dreg;
12225                                 MONO_ADD_INS (bblock, ins);
12226
12227                                 cfg->param_area = MAX (cfg->param_area, MONO_ARCH_DYN_CALL_PARAM_AREA);
12228
12229                                 ip += 2;
12230                                 inline_costs += 10 * num_calls++;
12231
12232                                 break;
12233                         }
12234                         case CEE_MONO_MEMORY_BARRIER: {
12235                                 CHECK_OPSIZE (6);
12236                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12237                                 ip += 6;
12238                                 break;
12239                         }
12240                         case CEE_MONO_JIT_ATTACH: {
12241                                 MonoInst *args [16], *domain_ins;
12242                                 MonoInst *ad_ins, *jit_tls_ins;
12243                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12244
12245                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12246
12247                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12248                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12249
12250                                 ad_ins = mono_get_domain_intrinsic (cfg);
12251                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12252
12253                                 if (MONO_ARCH_HAVE_TLS_GET && ad_ins && jit_tls_ins) {
12254                                         NEW_BBLOCK (cfg, next_bb);
12255                                         NEW_BBLOCK (cfg, call_bb);
12256
12257                                         if (cfg->compile_aot) {
12258                                                 /* AOT code is only used in the root domain */
12259                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12260                                         } else {
12261                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12262                                         }
12263                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12264                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12265                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12266
12267                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12268                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12269                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12270
12271                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12272                                         MONO_START_BB (cfg, call_bb);
12273                                 }
12274
12275                                 if (cfg->compile_aot) {
12276                                         /* AOT code is only used in the root domain */
12277                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
12278                                 } else {
12279                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
12280                                 }
12281                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12282                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12283
12284                                 if (next_bb) {
12285                                         MONO_START_BB (cfg, next_bb);
12286                                         bblock = cfg->cbb;
12287                                 }
12288                                 ip += 2;
12289                                 break;
12290                         }
12291                         case CEE_MONO_JIT_DETACH: {
12292                                 MonoInst *args [16];
12293
12294                                 /* Restore the original domain */
12295                                 dreg = alloc_ireg (cfg);
12296                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12297                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12298                                 ip += 2;
12299                                 break;
12300                         }
12301                         default:
12302                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12303                                 break;
12304                         }
12305                         break;
12306                 }
12307
12308                 case CEE_PREFIX1: {
12309                         CHECK_OPSIZE (2);
12310                         switch (ip [1]) {
12311                         case CEE_ARGLIST: {
12312                                 /* somewhat similar to LDTOKEN */
12313                                 MonoInst *addr, *vtvar;
12314                                 CHECK_STACK_OVF (1);
12315                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12316
12317                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12318                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12319
12320                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12321                                 ins->type = STACK_VTYPE;
12322                                 ins->klass = mono_defaults.argumenthandle_class;
12323                                 *sp++ = ins;
12324                                 ip += 2;
12325                                 break;
12326                         }
12327                         case CEE_CEQ:
12328                         case CEE_CGT:
12329                         case CEE_CGT_UN:
12330                         case CEE_CLT:
12331                         case CEE_CLT_UN: {
12332                                 MonoInst *cmp, *arg1, *arg2;
12333
12334                                 CHECK_STACK (2);
12335                                 sp -= 2;
12336                                 arg1 = sp [0];
12337                                 arg2 = sp [1];
12338
12339                                 /*
12340                                  * The following transforms:
12341                                  *    CEE_CEQ    into OP_CEQ
12342                                  *    CEE_CGT    into OP_CGT
12343                                  *    CEE_CGT_UN into OP_CGT_UN
12344                                  *    CEE_CLT    into OP_CLT
12345                                  *    CEE_CLT_UN into OP_CLT_UN
12346                                  */
12347                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12348
12349                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12350                                 cmp->sreg1 = arg1->dreg;
12351                                 cmp->sreg2 = arg2->dreg;
12352                                 type_from_op (cfg, cmp, arg1, arg2);
12353                                 CHECK_TYPE (cmp);
12354                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12355                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12356                                         cmp->opcode = OP_LCOMPARE;
12357                                 else if (arg1->type == STACK_R4)
12358                                         cmp->opcode = OP_RCOMPARE;
12359                                 else if (arg1->type == STACK_R8)
12360                                         cmp->opcode = OP_FCOMPARE;
12361                                 else
12362                                         cmp->opcode = OP_ICOMPARE;
12363                                 MONO_ADD_INS (bblock, cmp);
12364                                 ins->type = STACK_I4;
12365                                 ins->dreg = alloc_dreg (cfg, ins->type);
12366                                 type_from_op (cfg, ins, arg1, arg2);
12367
12368                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12369                                         /*
12370                                          * The backends expect the fceq opcodes to do the
12371                                          * comparison too.
12372                                          */
12373                                         ins->sreg1 = cmp->sreg1;
12374                                         ins->sreg2 = cmp->sreg2;
12375                                         NULLIFY_INS (cmp);
12376                                 }
12377                                 MONO_ADD_INS (bblock, ins);
12378                                 *sp++ = ins;
12379                                 ip += 2;
12380                                 break;
12381                         }
12382                         case CEE_LDFTN: {
12383                                 MonoInst *argconst;
12384                                 MonoMethod *cil_method;
12385
12386                                 CHECK_STACK_OVF (1);
12387                                 CHECK_OPSIZE (6);
12388                                 n = read32 (ip + 2);
12389                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12390                                 if (!cmethod || mono_loader_get_last_error ())
12391                                         LOAD_ERROR;
12392                                 mono_class_init (cmethod->klass);
12393
12394                                 mono_save_token_info (cfg, image, n, cmethod);
12395
12396                                 context_used = mini_method_check_context_used (cfg, cmethod);
12397
12398                                 cil_method = cmethod;
12399                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12400                                         METHOD_ACCESS_FAILURE (method, cil_method);
12401
12402                                 if (mono_security_core_clr_enabled ())
12403                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12404
12405                                 /*
12406                                  * Optimize the common case of ldftn+delegate creation
12407                                  */
12408                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12409                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12410                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12411                                                 MonoInst *target_ins, *handle_ins;
12412                                                 MonoMethod *invoke;
12413                                                 int invoke_context_used;
12414
12415                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12416                                                 if (!invoke || !mono_method_signature (invoke))
12417                                                         LOAD_ERROR;
12418
12419                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12420
12421                                                 target_ins = sp [-1];
12422
12423                                                 if (mono_security_core_clr_enabled ())
12424                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12425
12426                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12427                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12428                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12429                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12430                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12431                                                         }
12432                                                 }
12433
12434                                                 /* FIXME: SGEN support */
12435                                                 if (invoke_context_used == 0) {
12436                                                         ip += 6;
12437                                                         if (cfg->verbose_level > 3)
12438                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12439                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12440                                                                 sp --;
12441                                                                 *sp = handle_ins;
12442                                                                 CHECK_CFG_EXCEPTION;
12443                                                                 ip += 5;
12444                                                                 sp ++;
12445                                                                 break;
12446                                                         }
12447                                                         ip -= 6;
12448                                                 }
12449                                         }
12450                                 }
12451
12452                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12453                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12454                                 *sp++ = ins;
12455
12456                                 ip += 6;
12457                                 inline_costs += 10 * num_calls++;
12458                                 break;
12459                         }
12460                         case CEE_LDVIRTFTN: {
12461                                 MonoInst *args [2];
12462
12463                                 CHECK_STACK (1);
12464                                 CHECK_OPSIZE (6);
12465                                 n = read32 (ip + 2);
12466                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12467                                 if (!cmethod || mono_loader_get_last_error ())
12468                                         LOAD_ERROR;
12469                                 mono_class_init (cmethod->klass);
12470
12471                                 context_used = mini_method_check_context_used (cfg, cmethod);
12472
12473                                 if (mono_security_core_clr_enabled ())
12474                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
12475
12476                                 /*
12477                                  * Optimize the common case of ldvirtftn+delegate creation
12478                                  */
12479                                 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)) {
12480                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12481                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12482                                                 MonoInst *target_ins, *handle_ins;
12483                                                 MonoMethod *invoke;
12484                                                 int invoke_context_used;
12485                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12486
12487                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12488                                                 if (!invoke || !mono_method_signature (invoke))
12489                                                         LOAD_ERROR;
12490
12491                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12492
12493                                                 target_ins = sp [-1];
12494
12495                                                 if (mono_security_core_clr_enabled ())
12496                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
12497
12498                                                 /* FIXME: SGEN support */
12499                                                 if (invoke_context_used == 0) {
12500                                                         ip += 6;
12501                                                         if (cfg->verbose_level > 3)
12502                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
12503                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12504                                                                 sp -= 2;
12505                                                                 *sp = handle_ins;
12506                                                                 CHECK_CFG_EXCEPTION;
12507                                                                 ip += 5;
12508                                                                 sp ++;
12509                                                                 break;
12510                                                         }
12511                                                         ip -= 6;
12512                                                 }
12513                                         }
12514                                 }
12515
12516                                 --sp;
12517                                 args [0] = *sp;
12518
12519                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12520                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12521
12522                                 if (context_used)
12523                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12524                                 else
12525                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12526
12527                                 ip += 6;
12528                                 inline_costs += 10 * num_calls++;
12529                                 break;
12530                         }
12531                         case CEE_LDARG:
12532                                 CHECK_STACK_OVF (1);
12533                                 CHECK_OPSIZE (4);
12534                                 n = read16 (ip + 2);
12535                                 CHECK_ARG (n);
12536                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12537                                 *sp++ = ins;
12538                                 ip += 4;
12539                                 break;
12540                         case CEE_LDARGA:
12541                                 CHECK_STACK_OVF (1);
12542                                 CHECK_OPSIZE (4);
12543                                 n = read16 (ip + 2);
12544                                 CHECK_ARG (n);
12545                                 NEW_ARGLOADA (cfg, ins, n);
12546                                 MONO_ADD_INS (cfg->cbb, ins);
12547                                 *sp++ = ins;
12548                                 ip += 4;
12549                                 break;
12550                         case CEE_STARG:
12551                                 CHECK_STACK (1);
12552                                 --sp;
12553                                 CHECK_OPSIZE (4);
12554                                 n = read16 (ip + 2);
12555                                 CHECK_ARG (n);
12556                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12557                                         UNVERIFIED;
12558                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12559                                 ip += 4;
12560                                 break;
12561                         case CEE_LDLOC:
12562                                 CHECK_STACK_OVF (1);
12563                                 CHECK_OPSIZE (4);
12564                                 n = read16 (ip + 2);
12565                                 CHECK_LOCAL (n);
12566                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12567                                 *sp++ = ins;
12568                                 ip += 4;
12569                                 break;
12570                         case CEE_LDLOCA: {
12571                                 unsigned char *tmp_ip;
12572                                 CHECK_STACK_OVF (1);
12573                                 CHECK_OPSIZE (4);
12574                                 n = read16 (ip + 2);
12575                                 CHECK_LOCAL (n);
12576
12577                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12578                                         ip = tmp_ip;
12579                                         inline_costs += 1;
12580                                         break;
12581                                 }
12582
12583                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12584                                 *sp++ = ins;
12585                                 ip += 4;
12586                                 break;
12587                         }
12588                         case CEE_STLOC:
12589                                 CHECK_STACK (1);
12590                                 --sp;
12591                                 CHECK_OPSIZE (4);
12592                                 n = read16 (ip + 2);
12593                                 CHECK_LOCAL (n);
12594                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12595                                         UNVERIFIED;
12596                                 emit_stloc_ir (cfg, sp, header, n);
12597                                 ip += 4;
12598                                 inline_costs += 1;
12599                                 break;
12600                         case CEE_LOCALLOC:
12601                                 CHECK_STACK (1);
12602                                 --sp;
12603                                 if (sp != stack_start)
12604                                         UNVERIFIED;
12605                                 if (cfg->method != method)
12606                                         /*
12607                                          * Inlining this into a loop in a parent could lead to
12608                                          * stack overflows which is different behavior than the
12609                                          * non-inlined case, thus disable inlining in this case.
12610                                          */
12611                                         INLINE_FAILURE("localloc");
12612
12613                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12614                                 ins->dreg = alloc_preg (cfg);
12615                                 ins->sreg1 = sp [0]->dreg;
12616                                 ins->type = STACK_PTR;
12617                                 MONO_ADD_INS (cfg->cbb, ins);
12618
12619                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12620                                 if (init_locals)
12621                                         ins->flags |= MONO_INST_INIT;
12622
12623                                 *sp++ = ins;
12624                                 ip += 2;
12625                                 break;
12626                         case CEE_ENDFILTER: {
12627                                 MonoExceptionClause *clause, *nearest;
12628                                 int cc;
12629
12630                                 CHECK_STACK (1);
12631                                 --sp;
12632                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12633                                         UNVERIFIED;
12634                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12635                                 ins->sreg1 = (*sp)->dreg;
12636                                 MONO_ADD_INS (bblock, ins);
12637                                 start_new_bblock = 1;
12638                                 ip += 2;
12639
12640                                 nearest = NULL;
12641                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12642                                         clause = &header->clauses [cc];
12643                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12644                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12645                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12646                                                 nearest = clause;
12647                                 }
12648                                 g_assert (nearest);
12649                                 if ((ip - header->code) != nearest->handler_offset)
12650                                         UNVERIFIED;
12651
12652                                 break;
12653                         }
12654                         case CEE_UNALIGNED_:
12655                                 ins_flag |= MONO_INST_UNALIGNED;
12656                                 /* FIXME: record alignment? we can assume 1 for now */
12657                                 CHECK_OPSIZE (3);
12658                                 ip += 3;
12659                                 break;
12660                         case CEE_VOLATILE_:
12661                                 ins_flag |= MONO_INST_VOLATILE;
12662                                 ip += 2;
12663                                 break;
12664                         case CEE_TAIL_:
12665                                 ins_flag   |= MONO_INST_TAILCALL;
12666                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12667                                 /* Can't inline tail calls at this time */
12668                                 inline_costs += 100000;
12669                                 ip += 2;
12670                                 break;
12671                         case CEE_INITOBJ:
12672                                 CHECK_STACK (1);
12673                                 --sp;
12674                                 CHECK_OPSIZE (6);
12675                                 token = read32 (ip + 2);
12676                                 klass = mini_get_class (method, token, generic_context);
12677                                 CHECK_TYPELOAD (klass);
12678                                 if (generic_class_is_reference_type (cfg, klass))
12679                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12680                                 else
12681                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12682                                 ip += 6;
12683                                 inline_costs += 1;
12684                                 break;
12685                         case CEE_CONSTRAINED_:
12686                                 CHECK_OPSIZE (6);
12687                                 token = read32 (ip + 2);
12688                                 constrained_class = mini_get_class (method, token, generic_context);
12689                                 CHECK_TYPELOAD (constrained_class);
12690                                 ip += 6;
12691                                 break;
12692                         case CEE_CPBLK:
12693                         case CEE_INITBLK: {
12694                                 MonoInst *iargs [3];
12695                                 CHECK_STACK (3);
12696                                 sp -= 3;
12697
12698                                 /* Skip optimized paths for volatile operations. */
12699                                 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)) {
12700                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
12701                                 } 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)) {
12702                                         /* emit_memset only works when val == 0 */
12703                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
12704                                 } else {
12705                                         MonoInst *call;
12706                                         iargs [0] = sp [0];
12707                                         iargs [1] = sp [1];
12708                                         iargs [2] = sp [2];
12709                                         if (ip [1] == CEE_CPBLK) {
12710                                                 /*
12711                                                  * FIXME: It's unclear whether we should be emitting both the acquire
12712                                                  * and release barriers for cpblk. It is technically both a load and
12713                                                  * store operation, so it seems like that's the sensible thing to do.
12714                                                  *
12715                                                  * FIXME: We emit full barriers on both sides of the operation for
12716                                                  * simplicity. We should have a separate atomic memcpy method instead.
12717                                                  */
12718                                                 MonoMethod *memcpy_method = get_memcpy_method ();
12719
12720                                                 if (ins_flag & MONO_INST_VOLATILE)
12721                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12722
12723                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
12724                                                 call->flags |= ins_flag;
12725
12726                                                 if (ins_flag & MONO_INST_VOLATILE)
12727                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
12728                                         } else {
12729                                                 MonoMethod *memset_method = get_memset_method ();
12730                                                 if (ins_flag & MONO_INST_VOLATILE) {
12731                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
12732                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
12733                                                 }
12734                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
12735                                                 call->flags |= ins_flag;
12736                                         }
12737                                 }
12738                                 ip += 2;
12739                                 ins_flag = 0;
12740                                 inline_costs += 1;
12741                                 break;
12742                         }
12743                         case CEE_NO_:
12744                                 CHECK_OPSIZE (3);
12745                                 if (ip [2] & 0x1)
12746                                         ins_flag |= MONO_INST_NOTYPECHECK;
12747                                 if (ip [2] & 0x2)
12748                                         ins_flag |= MONO_INST_NORANGECHECK;
12749                                 /* we ignore the no-nullcheck for now since we
12750                                  * really do it explicitly only when doing callvirt->call
12751                                  */
12752                                 ip += 3;
12753                                 break;
12754                         case CEE_RETHROW: {
12755                                 MonoInst *load;
12756                                 int handler_offset = -1;
12757
12758                                 for (i = 0; i < header->num_clauses; ++i) {
12759                                         MonoExceptionClause *clause = &header->clauses [i];
12760                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12761                                                 handler_offset = clause->handler_offset;
12762                                                 break;
12763                                         }
12764                                 }
12765
12766                                 bblock->flags |= BB_EXCEPTION_UNSAFE;
12767
12768                                 if (handler_offset == -1)
12769                                         UNVERIFIED;
12770
12771                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12772                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12773                                 ins->sreg1 = load->dreg;
12774                                 MONO_ADD_INS (bblock, ins);
12775
12776                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12777                                 MONO_ADD_INS (bblock, ins);
12778
12779                                 sp = stack_start;
12780                                 link_bblock (cfg, bblock, end_bblock);
12781                                 start_new_bblock = 1;
12782                                 ip += 2;
12783                                 break;
12784                         }
12785                         case CEE_SIZEOF: {
12786                                 guint32 val;
12787                                 int ialign;
12788
12789                                 CHECK_STACK_OVF (1);
12790                                 CHECK_OPSIZE (6);
12791                                 token = read32 (ip + 2);
12792                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12793                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12794                                         CHECK_CFG_ERROR;
12795
12796                                         val = mono_type_size (type, &ialign);
12797                                 } else {
12798                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12799                                         CHECK_TYPELOAD (klass);
12800
12801                                         val = mono_type_size (&klass->byval_arg, &ialign);
12802
12803                                         if (mini_is_gsharedvt_klass (cfg, klass))
12804                                                 GSHAREDVT_FAILURE (*ip);
12805                                 }
12806                                 EMIT_NEW_ICONST (cfg, ins, val);
12807                                 *sp++= ins;
12808                                 ip += 6;
12809                                 break;
12810                         }
12811                         case CEE_REFANYTYPE: {
12812                                 MonoInst *src_var, *src;
12813
12814                                 GSHAREDVT_FAILURE (*ip);
12815
12816                                 CHECK_STACK (1);
12817                                 --sp;
12818
12819                                 // FIXME:
12820                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12821                                 if (!src_var)
12822                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12823                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12824                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12825                                 *sp++ = ins;
12826                                 ip += 2;
12827                                 break;
12828                         }
12829                         case CEE_READONLY_:
12830                                 readonly = TRUE;
12831                                 ip += 2;
12832                                 break;
12833
12834                         case CEE_UNUSED56:
12835                         case CEE_UNUSED57:
12836                         case CEE_UNUSED70:
12837                         case CEE_UNUSED:
12838                         case CEE_UNUSED99:
12839                                 UNVERIFIED;
12840
12841                         default:
12842                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12843                                 UNVERIFIED;
12844                         }
12845                         break;
12846                 }
12847                 case CEE_UNUSED58:
12848                 case CEE_UNUSED1:
12849                         UNVERIFIED;
12850
12851                 default:
12852                         g_warning ("opcode 0x%02x not handled", *ip);
12853                         UNVERIFIED;
12854                 }
12855         }
12856         if (start_new_bblock != 1)
12857                 UNVERIFIED;
12858
12859         bblock->cil_length = ip - bblock->cil_code;
12860         if (bblock->next_bb) {
12861                 /* This could already be set because of inlining, #693905 */
12862                 MonoBasicBlock *bb = bblock;
12863
12864                 while (bb->next_bb)
12865                         bb = bb->next_bb;
12866                 bb->next_bb = end_bblock;
12867         } else {
12868                 bblock->next_bb = end_bblock;
12869         }
12870
12871         if (cfg->method == method && cfg->domainvar) {
12872                 MonoInst *store;
12873                 MonoInst *get_domain;
12874
12875                 cfg->cbb = init_localsbb;
12876
12877                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
12878                         MONO_ADD_INS (cfg->cbb, get_domain);
12879                 } else {
12880                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
12881                 }
12882                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12883                 MONO_ADD_INS (cfg->cbb, store);
12884         }
12885
12886 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12887         if (cfg->compile_aot)
12888                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12889                 mono_get_got_var (cfg);
12890 #endif
12891
12892         if (cfg->method == method && cfg->got_var)
12893                 mono_emit_load_got_addr (cfg);
12894
12895         if (init_localsbb) {
12896                 cfg->cbb = init_localsbb;
12897                 cfg->ip = NULL;
12898                 for (i = 0; i < header->num_locals; ++i) {
12899                         emit_init_local (cfg, i, header->locals [i], init_locals);
12900                 }
12901         }
12902
12903         if (cfg->init_ref_vars && cfg->method == method) {
12904                 /* Emit initialization for ref vars */
12905                 // FIXME: Avoid duplication initialization for IL locals.
12906                 for (i = 0; i < cfg->num_varinfo; ++i) {
12907                         MonoInst *ins = cfg->varinfo [i];
12908
12909                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12910                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12911                 }
12912         }
12913
12914         if (cfg->lmf_var && cfg->method == method) {
12915                 cfg->cbb = init_localsbb;
12916                 emit_push_lmf (cfg);
12917         }
12918
12919         cfg->cbb = init_localsbb;
12920         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12921
12922         if (seq_points) {
12923                 MonoBasicBlock *bb;
12924
12925                 /*
12926                  * Make seq points at backward branch targets interruptable.
12927                  */
12928                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12929                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12930                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12931         }
12932
12933         /* Add a sequence point for method entry/exit events */
12934         if (seq_points && cfg->gen_sdb_seq_points) {
12935                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12936                 MONO_ADD_INS (init_localsbb, ins);
12937                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12938                 MONO_ADD_INS (cfg->bb_exit, ins);
12939         }
12940
12941         /*
12942          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12943          * the code they refer to was dead (#11880).
12944          */
12945         if (sym_seq_points) {
12946                 for (i = 0; i < header->code_size; ++i) {
12947                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12948                                 MonoInst *ins;
12949
12950                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12951                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12952                         }
12953                 }
12954         }
12955
12956         cfg->ip = NULL;
12957
12958         if (cfg->method == method) {
12959                 MonoBasicBlock *bb;
12960                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12961                         bb->region = mono_find_block_region (cfg, bb->real_offset);
12962                         if (cfg->spvars)
12963                                 mono_create_spvar_for_region (cfg, bb->region);
12964                         if (cfg->verbose_level > 2)
12965                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12966                 }
12967         }
12968
12969         if (inline_costs < 0) {
12970                 char *mname;
12971
12972                 /* Method is too large */
12973                 mname = mono_method_full_name (method, TRUE);
12974                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
12975                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
12976                 g_free (mname);
12977         }
12978
12979         if ((cfg->verbose_level > 2) && (cfg->method == method))
12980                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12981
12982         goto cleanup;
12983
12984 mono_error_exit:
12985         g_assert (!mono_error_ok (&cfg->error));
12986         goto cleanup;
12987
12988  exception_exit:
12989         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12990         goto cleanup;
12991
12992  unverified:
12993         set_exception_type_from_invalid_il (cfg, method, ip);
12994         goto cleanup;
12995
12996  cleanup:
12997         g_slist_free (class_inits);
12998         mono_basic_block_free (original_bb);
12999         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13000         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13001         if (cfg->exception_type)
13002                 return -1;
13003         else
13004                 return inline_costs;
13005 }
13006
13007 static int
13008 store_membase_reg_to_store_membase_imm (int opcode)
13009 {
13010         switch (opcode) {
13011         case OP_STORE_MEMBASE_REG:
13012                 return OP_STORE_MEMBASE_IMM;
13013         case OP_STOREI1_MEMBASE_REG:
13014                 return OP_STOREI1_MEMBASE_IMM;
13015         case OP_STOREI2_MEMBASE_REG:
13016                 return OP_STOREI2_MEMBASE_IMM;
13017         case OP_STOREI4_MEMBASE_REG:
13018                 return OP_STOREI4_MEMBASE_IMM;
13019         case OP_STOREI8_MEMBASE_REG:
13020                 return OP_STOREI8_MEMBASE_IMM;
13021         default:
13022                 g_assert_not_reached ();
13023         }
13024
13025         return -1;
13026 }
13027
13028 int
13029 mono_op_to_op_imm (int opcode)
13030 {
13031         switch (opcode) {
13032         case OP_IADD:
13033                 return OP_IADD_IMM;
13034         case OP_ISUB:
13035                 return OP_ISUB_IMM;
13036         case OP_IDIV:
13037                 return OP_IDIV_IMM;
13038         case OP_IDIV_UN:
13039                 return OP_IDIV_UN_IMM;
13040         case OP_IREM:
13041                 return OP_IREM_IMM;
13042         case OP_IREM_UN:
13043                 return OP_IREM_UN_IMM;
13044         case OP_IMUL:
13045                 return OP_IMUL_IMM;
13046         case OP_IAND:
13047                 return OP_IAND_IMM;
13048         case OP_IOR:
13049                 return OP_IOR_IMM;
13050         case OP_IXOR:
13051                 return OP_IXOR_IMM;
13052         case OP_ISHL:
13053                 return OP_ISHL_IMM;
13054         case OP_ISHR:
13055                 return OP_ISHR_IMM;
13056         case OP_ISHR_UN:
13057                 return OP_ISHR_UN_IMM;
13058
13059         case OP_LADD:
13060                 return OP_LADD_IMM;
13061         case OP_LSUB:
13062                 return OP_LSUB_IMM;
13063         case OP_LAND:
13064                 return OP_LAND_IMM;
13065         case OP_LOR:
13066                 return OP_LOR_IMM;
13067         case OP_LXOR:
13068                 return OP_LXOR_IMM;
13069         case OP_LSHL:
13070                 return OP_LSHL_IMM;
13071         case OP_LSHR:
13072                 return OP_LSHR_IMM;
13073         case OP_LSHR_UN:
13074                 return OP_LSHR_UN_IMM;
13075 #if SIZEOF_REGISTER == 8
13076         case OP_LREM:
13077                 return OP_LREM_IMM;
13078 #endif
13079
13080         case OP_COMPARE:
13081                 return OP_COMPARE_IMM;
13082         case OP_ICOMPARE:
13083                 return OP_ICOMPARE_IMM;
13084         case OP_LCOMPARE:
13085                 return OP_LCOMPARE_IMM;
13086
13087         case OP_STORE_MEMBASE_REG:
13088                 return OP_STORE_MEMBASE_IMM;
13089         case OP_STOREI1_MEMBASE_REG:
13090                 return OP_STOREI1_MEMBASE_IMM;
13091         case OP_STOREI2_MEMBASE_REG:
13092                 return OP_STOREI2_MEMBASE_IMM;
13093         case OP_STOREI4_MEMBASE_REG:
13094                 return OP_STOREI4_MEMBASE_IMM;
13095
13096 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13097         case OP_X86_PUSH:
13098                 return OP_X86_PUSH_IMM;
13099         case OP_X86_COMPARE_MEMBASE_REG:
13100                 return OP_X86_COMPARE_MEMBASE_IMM;
13101 #endif
13102 #if defined(TARGET_AMD64)
13103         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13104                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13105 #endif
13106         case OP_VOIDCALL_REG:
13107                 return OP_VOIDCALL;
13108         case OP_CALL_REG:
13109                 return OP_CALL;
13110         case OP_LCALL_REG:
13111                 return OP_LCALL;
13112         case OP_FCALL_REG:
13113                 return OP_FCALL;
13114         case OP_LOCALLOC:
13115                 return OP_LOCALLOC_IMM;
13116         }
13117
13118         return -1;
13119 }
13120
13121 static int
13122 ldind_to_load_membase (int opcode)
13123 {
13124         switch (opcode) {
13125         case CEE_LDIND_I1:
13126                 return OP_LOADI1_MEMBASE;
13127         case CEE_LDIND_U1:
13128                 return OP_LOADU1_MEMBASE;
13129         case CEE_LDIND_I2:
13130                 return OP_LOADI2_MEMBASE;
13131         case CEE_LDIND_U2:
13132                 return OP_LOADU2_MEMBASE;
13133         case CEE_LDIND_I4:
13134                 return OP_LOADI4_MEMBASE;
13135         case CEE_LDIND_U4:
13136                 return OP_LOADU4_MEMBASE;
13137         case CEE_LDIND_I:
13138                 return OP_LOAD_MEMBASE;
13139         case CEE_LDIND_REF:
13140                 return OP_LOAD_MEMBASE;
13141         case CEE_LDIND_I8:
13142                 return OP_LOADI8_MEMBASE;
13143         case CEE_LDIND_R4:
13144                 return OP_LOADR4_MEMBASE;
13145         case CEE_LDIND_R8:
13146                 return OP_LOADR8_MEMBASE;
13147         default:
13148                 g_assert_not_reached ();
13149         }
13150
13151         return -1;
13152 }
13153
13154 static int
13155 stind_to_store_membase (int opcode)
13156 {
13157         switch (opcode) {
13158         case CEE_STIND_I1:
13159                 return OP_STOREI1_MEMBASE_REG;
13160         case CEE_STIND_I2:
13161                 return OP_STOREI2_MEMBASE_REG;
13162         case CEE_STIND_I4:
13163                 return OP_STOREI4_MEMBASE_REG;
13164         case CEE_STIND_I:
13165         case CEE_STIND_REF:
13166                 return OP_STORE_MEMBASE_REG;
13167         case CEE_STIND_I8:
13168                 return OP_STOREI8_MEMBASE_REG;
13169         case CEE_STIND_R4:
13170                 return OP_STORER4_MEMBASE_REG;
13171         case CEE_STIND_R8:
13172                 return OP_STORER8_MEMBASE_REG;
13173         default:
13174                 g_assert_not_reached ();
13175         }
13176
13177         return -1;
13178 }
13179
13180 int
13181 mono_load_membase_to_load_mem (int opcode)
13182 {
13183         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13184 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13185         switch (opcode) {
13186         case OP_LOAD_MEMBASE:
13187                 return OP_LOAD_MEM;
13188         case OP_LOADU1_MEMBASE:
13189                 return OP_LOADU1_MEM;
13190         case OP_LOADU2_MEMBASE:
13191                 return OP_LOADU2_MEM;
13192         case OP_LOADI4_MEMBASE:
13193                 return OP_LOADI4_MEM;
13194         case OP_LOADU4_MEMBASE:
13195                 return OP_LOADU4_MEM;
13196 #if SIZEOF_REGISTER == 8
13197         case OP_LOADI8_MEMBASE:
13198                 return OP_LOADI8_MEM;
13199 #endif
13200         }
13201 #endif
13202
13203         return -1;
13204 }
13205
13206 static inline int
13207 op_to_op_dest_membase (int store_opcode, int opcode)
13208 {
13209 #if defined(TARGET_X86)
13210         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13211                 return -1;
13212
13213         switch (opcode) {
13214         case OP_IADD:
13215                 return OP_X86_ADD_MEMBASE_REG;
13216         case OP_ISUB:
13217                 return OP_X86_SUB_MEMBASE_REG;
13218         case OP_IAND:
13219                 return OP_X86_AND_MEMBASE_REG;
13220         case OP_IOR:
13221                 return OP_X86_OR_MEMBASE_REG;
13222         case OP_IXOR:
13223                 return OP_X86_XOR_MEMBASE_REG;
13224         case OP_ADD_IMM:
13225         case OP_IADD_IMM:
13226                 return OP_X86_ADD_MEMBASE_IMM;
13227         case OP_SUB_IMM:
13228         case OP_ISUB_IMM:
13229                 return OP_X86_SUB_MEMBASE_IMM;
13230         case OP_AND_IMM:
13231         case OP_IAND_IMM:
13232                 return OP_X86_AND_MEMBASE_IMM;
13233         case OP_OR_IMM:
13234         case OP_IOR_IMM:
13235                 return OP_X86_OR_MEMBASE_IMM;
13236         case OP_XOR_IMM:
13237         case OP_IXOR_IMM:
13238                 return OP_X86_XOR_MEMBASE_IMM;
13239         case OP_MOVE:
13240                 return OP_NOP;
13241         }
13242 #endif
13243
13244 #if defined(TARGET_AMD64)
13245         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13246                 return -1;
13247
13248         switch (opcode) {
13249         case OP_IADD:
13250                 return OP_X86_ADD_MEMBASE_REG;
13251         case OP_ISUB:
13252                 return OP_X86_SUB_MEMBASE_REG;
13253         case OP_IAND:
13254                 return OP_X86_AND_MEMBASE_REG;
13255         case OP_IOR:
13256                 return OP_X86_OR_MEMBASE_REG;
13257         case OP_IXOR:
13258                 return OP_X86_XOR_MEMBASE_REG;
13259         case OP_IADD_IMM:
13260                 return OP_X86_ADD_MEMBASE_IMM;
13261         case OP_ISUB_IMM:
13262                 return OP_X86_SUB_MEMBASE_IMM;
13263         case OP_IAND_IMM:
13264                 return OP_X86_AND_MEMBASE_IMM;
13265         case OP_IOR_IMM:
13266                 return OP_X86_OR_MEMBASE_IMM;
13267         case OP_IXOR_IMM:
13268                 return OP_X86_XOR_MEMBASE_IMM;
13269         case OP_LADD:
13270                 return OP_AMD64_ADD_MEMBASE_REG;
13271         case OP_LSUB:
13272                 return OP_AMD64_SUB_MEMBASE_REG;
13273         case OP_LAND:
13274                 return OP_AMD64_AND_MEMBASE_REG;
13275         case OP_LOR:
13276                 return OP_AMD64_OR_MEMBASE_REG;
13277         case OP_LXOR:
13278                 return OP_AMD64_XOR_MEMBASE_REG;
13279         case OP_ADD_IMM:
13280         case OP_LADD_IMM:
13281                 return OP_AMD64_ADD_MEMBASE_IMM;
13282         case OP_SUB_IMM:
13283         case OP_LSUB_IMM:
13284                 return OP_AMD64_SUB_MEMBASE_IMM;
13285         case OP_AND_IMM:
13286         case OP_LAND_IMM:
13287                 return OP_AMD64_AND_MEMBASE_IMM;
13288         case OP_OR_IMM:
13289         case OP_LOR_IMM:
13290                 return OP_AMD64_OR_MEMBASE_IMM;
13291         case OP_XOR_IMM:
13292         case OP_LXOR_IMM:
13293                 return OP_AMD64_XOR_MEMBASE_IMM;
13294         case OP_MOVE:
13295                 return OP_NOP;
13296         }
13297 #endif
13298
13299         return -1;
13300 }
13301
13302 static inline int
13303 op_to_op_store_membase (int store_opcode, int opcode)
13304 {
13305 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13306         switch (opcode) {
13307         case OP_ICEQ:
13308                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13309                         return OP_X86_SETEQ_MEMBASE;
13310         case OP_CNE:
13311                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13312                         return OP_X86_SETNE_MEMBASE;
13313         }
13314 #endif
13315
13316         return -1;
13317 }
13318
13319 static inline int
13320 op_to_op_src1_membase (int load_opcode, int opcode)
13321 {
13322 #ifdef TARGET_X86
13323         /* FIXME: This has sign extension issues */
13324         /*
13325         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13326                 return OP_X86_COMPARE_MEMBASE8_IMM;
13327         */
13328
13329         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13330                 return -1;
13331
13332         switch (opcode) {
13333         case OP_X86_PUSH:
13334                 return OP_X86_PUSH_MEMBASE;
13335         case OP_COMPARE_IMM:
13336         case OP_ICOMPARE_IMM:
13337                 return OP_X86_COMPARE_MEMBASE_IMM;
13338         case OP_COMPARE:
13339         case OP_ICOMPARE:
13340                 return OP_X86_COMPARE_MEMBASE_REG;
13341         }
13342 #endif
13343
13344 #ifdef TARGET_AMD64
13345         /* FIXME: This has sign extension issues */
13346         /*
13347         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13348                 return OP_X86_COMPARE_MEMBASE8_IMM;
13349         */
13350
13351         switch (opcode) {
13352         case OP_X86_PUSH:
13353 #ifdef __mono_ilp32__
13354                 if (load_opcode == OP_LOADI8_MEMBASE)
13355 #else
13356                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13357 #endif
13358                         return OP_X86_PUSH_MEMBASE;
13359                 break;
13360                 /* FIXME: This only works for 32 bit immediates
13361         case OP_COMPARE_IMM:
13362         case OP_LCOMPARE_IMM:
13363                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13364                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13365                 */
13366         case OP_ICOMPARE_IMM:
13367                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13368                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13369                 break;
13370         case OP_COMPARE:
13371         case OP_LCOMPARE:
13372 #ifdef __mono_ilp32__
13373                 if (load_opcode == OP_LOAD_MEMBASE)
13374                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13375                 if (load_opcode == OP_LOADI8_MEMBASE)
13376 #else
13377                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13378 #endif
13379                         return OP_AMD64_COMPARE_MEMBASE_REG;
13380                 break;
13381         case OP_ICOMPARE:
13382                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13383                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13384                 break;
13385         }
13386 #endif
13387
13388         return -1;
13389 }
13390
13391 static inline int
13392 op_to_op_src2_membase (int load_opcode, int opcode)
13393 {
13394 #ifdef TARGET_X86
13395         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13396                 return -1;
13397
13398         switch (opcode) {
13399         case OP_COMPARE:
13400         case OP_ICOMPARE:
13401                 return OP_X86_COMPARE_REG_MEMBASE;
13402         case OP_IADD:
13403                 return OP_X86_ADD_REG_MEMBASE;
13404         case OP_ISUB:
13405                 return OP_X86_SUB_REG_MEMBASE;
13406         case OP_IAND:
13407                 return OP_X86_AND_REG_MEMBASE;
13408         case OP_IOR:
13409                 return OP_X86_OR_REG_MEMBASE;
13410         case OP_IXOR:
13411                 return OP_X86_XOR_REG_MEMBASE;
13412         }
13413 #endif
13414
13415 #ifdef TARGET_AMD64
13416 #ifdef __mono_ilp32__
13417         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
13418 #else
13419         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)) {
13420 #endif
13421                 switch (opcode) {
13422                 case OP_ICOMPARE:
13423                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13424                 case OP_IADD:
13425                         return OP_X86_ADD_REG_MEMBASE;
13426                 case OP_ISUB:
13427                         return OP_X86_SUB_REG_MEMBASE;
13428                 case OP_IAND:
13429                         return OP_X86_AND_REG_MEMBASE;
13430                 case OP_IOR:
13431                         return OP_X86_OR_REG_MEMBASE;
13432                 case OP_IXOR:
13433                         return OP_X86_XOR_REG_MEMBASE;
13434                 }
13435 #ifdef __mono_ilp32__
13436         } else if (load_opcode == OP_LOADI8_MEMBASE) {
13437 #else
13438         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE)) {
13439 #endif
13440                 switch (opcode) {
13441                 case OP_COMPARE:
13442                 case OP_LCOMPARE:
13443                         return OP_AMD64_COMPARE_REG_MEMBASE;
13444                 case OP_LADD:
13445                         return OP_AMD64_ADD_REG_MEMBASE;
13446                 case OP_LSUB:
13447                         return OP_AMD64_SUB_REG_MEMBASE;
13448                 case OP_LAND:
13449                         return OP_AMD64_AND_REG_MEMBASE;
13450                 case OP_LOR:
13451                         return OP_AMD64_OR_REG_MEMBASE;
13452                 case OP_LXOR:
13453                         return OP_AMD64_XOR_REG_MEMBASE;
13454                 }
13455         }
13456 #endif
13457
13458         return -1;
13459 }
13460
13461 int
13462 mono_op_to_op_imm_noemul (int opcode)
13463 {
13464         switch (opcode) {
13465 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13466         case OP_LSHR:
13467         case OP_LSHL:
13468         case OP_LSHR_UN:
13469                 return -1;
13470 #endif
13471 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13472         case OP_IDIV:
13473         case OP_IDIV_UN:
13474         case OP_IREM:
13475         case OP_IREM_UN:
13476                 return -1;
13477 #endif
13478 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13479         case OP_IMUL:
13480                 return -1;
13481 #endif
13482         default:
13483                 return mono_op_to_op_imm (opcode);
13484         }
13485 }
13486
13487 /**
13488  * mono_handle_global_vregs:
13489  *
13490  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13491  * for them.
13492  */
13493 void
13494 mono_handle_global_vregs (MonoCompile *cfg)
13495 {
13496         gint32 *vreg_to_bb;
13497         MonoBasicBlock *bb;
13498         int i, pos;
13499
13500         vreg_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13501
13502 #ifdef MONO_ARCH_SIMD_INTRINSICS
13503         if (cfg->uses_simd_intrinsics)
13504                 mono_simd_simplify_indirection (cfg);
13505 #endif
13506
13507         /* Find local vregs used in more than one bb */
13508         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13509                 MonoInst *ins = bb->code;
13510                 int block_num = bb->block_num;
13511
13512                 if (cfg->verbose_level > 2)
13513                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13514
13515                 cfg->cbb = bb;
13516                 for (; ins; ins = ins->next) {
13517                         const char *spec = INS_INFO (ins->opcode);
13518                         int regtype = 0, regindex;
13519                         gint32 prev_bb;
13520
13521                         if (G_UNLIKELY (cfg->verbose_level > 2))
13522                                 mono_print_ins (ins);
13523
13524                         g_assert (ins->opcode >= MONO_CEE_LAST);
13525
13526                         for (regindex = 0; regindex < 4; regindex ++) {
13527                                 int vreg = 0;
13528
13529                                 if (regindex == 0) {
13530                                         regtype = spec [MONO_INST_DEST];
13531                                         if (regtype == ' ')
13532                                                 continue;
13533                                         vreg = ins->dreg;
13534                                 } else if (regindex == 1) {
13535                                         regtype = spec [MONO_INST_SRC1];
13536                                         if (regtype == ' ')
13537                                                 continue;
13538                                         vreg = ins->sreg1;
13539                                 } else if (regindex == 2) {
13540                                         regtype = spec [MONO_INST_SRC2];
13541                                         if (regtype == ' ')
13542                                                 continue;
13543                                         vreg = ins->sreg2;
13544                                 } else if (regindex == 3) {
13545                                         regtype = spec [MONO_INST_SRC3];
13546                                         if (regtype == ' ')
13547                                                 continue;
13548                                         vreg = ins->sreg3;
13549                                 }
13550
13551 #if SIZEOF_REGISTER == 4
13552                                 /* In the LLVM case, the long opcodes are not decomposed */
13553                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13554                                         /*
13555                                          * Since some instructions reference the original long vreg,
13556                                          * and some reference the two component vregs, it is quite hard
13557                                          * to determine when it needs to be global. So be conservative.
13558                                          */
13559                                         if (!get_vreg_to_inst (cfg, vreg)) {
13560                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13561
13562                                                 if (cfg->verbose_level > 2)
13563                                                         printf ("LONG VREG R%d made global.\n", vreg);
13564                                         }
13565
13566                                         /*
13567                                          * Make the component vregs volatile since the optimizations can
13568                                          * get confused otherwise.
13569                                          */
13570                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
13571                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
13572                                 }
13573 #endif
13574
13575                                 g_assert (vreg != -1);
13576
13577                                 prev_bb = vreg_to_bb [vreg];
13578                                 if (prev_bb == 0) {
13579                                         /* 0 is a valid block num */
13580                                         vreg_to_bb [vreg] = block_num + 1;
13581                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13582                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13583                                                 continue;
13584
13585                                         if (!get_vreg_to_inst (cfg, vreg)) {
13586                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13587                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13588
13589                                                 switch (regtype) {
13590                                                 case 'i':
13591                                                         if (vreg_is_ref (cfg, vreg))
13592                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13593                                                         else
13594                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13595                                                         break;
13596                                                 case 'l':
13597                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13598                                                         break;
13599                                                 case 'f':
13600                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13601                                                         break;
13602                                                 case 'v':
13603                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13604                                                         break;
13605                                                 default:
13606                                                         g_assert_not_reached ();
13607                                                 }
13608                                         }
13609
13610                                         /* Flag as having been used in more than one bb */
13611                                         vreg_to_bb [vreg] = -1;
13612                                 }
13613                         }
13614                 }
13615         }
13616
13617         /* If a variable is used in only one bblock, convert it into a local vreg */
13618         for (i = 0; i < cfg->num_varinfo; i++) {
13619                 MonoInst *var = cfg->varinfo [i];
13620                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13621
13622                 switch (var->type) {
13623                 case STACK_I4:
13624                 case STACK_OBJ:
13625                 case STACK_PTR:
13626                 case STACK_MP:
13627                 case STACK_VTYPE:
13628 #if SIZEOF_REGISTER == 8
13629                 case STACK_I8:
13630 #endif
13631 #if !defined(TARGET_X86)
13632                 /* Enabling this screws up the fp stack on x86 */
13633                 case STACK_R8:
13634 #endif
13635                         if (mono_arch_is_soft_float ())
13636                                 break;
13637
13638                         /* Arguments are implicitly global */
13639                         /* Putting R4 vars into registers doesn't work currently */
13640                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13641                         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) {
13642                                 /*
13643                                  * Make that the variable's liveness interval doesn't contain a call, since
13644                                  * that would cause the lvreg to be spilled, making the whole optimization
13645                                  * useless.
13646                                  */
13647                                 /* This is too slow for JIT compilation */
13648 #if 0
13649                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13650                                         MonoInst *ins;
13651                                         int def_index, call_index, ins_index;
13652                                         gboolean spilled = FALSE;
13653
13654                                         def_index = -1;
13655                                         call_index = -1;
13656                                         ins_index = 0;
13657                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13658                                                 const char *spec = INS_INFO (ins->opcode);
13659
13660                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13661                                                         def_index = ins_index;
13662
13663                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13664                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13665                                                         if (call_index > def_index) {
13666                                                                 spilled = TRUE;
13667                                                                 break;
13668                                                         }
13669                                                 }
13670
13671                                                 if (MONO_IS_CALL (ins))
13672                                                         call_index = ins_index;
13673
13674                                                 ins_index ++;
13675                                         }
13676
13677                                         if (spilled)
13678                                                 break;
13679                                 }
13680 #endif
13681
13682                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13683                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13684                                 var->flags |= MONO_INST_IS_DEAD;
13685                                 cfg->vreg_to_inst [var->dreg] = NULL;
13686                         }
13687                         break;
13688                 }
13689         }
13690
13691         /*
13692          * Compress the varinfo and vars tables so the liveness computation is faster and
13693          * takes up less space.
13694          */
13695         pos = 0;
13696         for (i = 0; i < cfg->num_varinfo; ++i) {
13697                 MonoInst *var = cfg->varinfo [i];
13698                 if (pos < i && cfg->locals_start == i)
13699                         cfg->locals_start = pos;
13700                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13701                         if (pos < i) {
13702                                 cfg->varinfo [pos] = cfg->varinfo [i];
13703                                 cfg->varinfo [pos]->inst_c0 = pos;
13704                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13705                                 cfg->vars [pos].idx = pos;
13706 #if SIZEOF_REGISTER == 4
13707                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13708                                         /* Modify the two component vars too */
13709                                         MonoInst *var1;
13710
13711                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
13712                                         var1->inst_c0 = pos;
13713                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
13714                                         var1->inst_c0 = pos;
13715                                 }
13716 #endif
13717                         }
13718                         pos ++;
13719                 }
13720         }
13721         cfg->num_varinfo = pos;
13722         if (cfg->locals_start > cfg->num_varinfo)
13723                 cfg->locals_start = cfg->num_varinfo;
13724 }
13725
13726 /**
13727  * mono_spill_global_vars:
13728  *
13729  *   Generate spill code for variables which are not allocated to registers,
13730  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13731  * code is generated which could be optimized by the local optimization passes.
13732  */
13733 void
13734 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13735 {
13736         MonoBasicBlock *bb;
13737         char spec2 [16];
13738         int orig_next_vreg;
13739         guint32 *vreg_to_lvreg;
13740         guint32 *lvregs;
13741         guint32 i, lvregs_len;
13742         gboolean dest_has_lvreg = FALSE;
13743         guint32 stacktypes [128];
13744         MonoInst **live_range_start, **live_range_end;
13745         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13746         int *gsharedvt_vreg_to_idx = NULL;
13747
13748         *need_local_opts = FALSE;
13749
13750         memset (spec2, 0, sizeof (spec2));
13751
13752         /* FIXME: Move this function to mini.c */
13753         stacktypes ['i'] = STACK_PTR;
13754         stacktypes ['l'] = STACK_I8;
13755         stacktypes ['f'] = STACK_R8;
13756 #ifdef MONO_ARCH_SIMD_INTRINSICS
13757         stacktypes ['x'] = STACK_VTYPE;
13758 #endif
13759
13760 #if SIZEOF_REGISTER == 4
13761         /* Create MonoInsts for longs */
13762         for (i = 0; i < cfg->num_varinfo; i++) {
13763                 MonoInst *ins = cfg->varinfo [i];
13764
13765                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13766                         switch (ins->type) {
13767                         case STACK_R8:
13768                         case STACK_I8: {
13769                                 MonoInst *tree;
13770
13771                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13772                                         break;
13773
13774                                 g_assert (ins->opcode == OP_REGOFFSET);
13775
13776                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
13777                                 g_assert (tree);
13778                                 tree->opcode = OP_REGOFFSET;
13779                                 tree->inst_basereg = ins->inst_basereg;
13780                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13781
13782                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
13783                                 g_assert (tree);
13784                                 tree->opcode = OP_REGOFFSET;
13785                                 tree->inst_basereg = ins->inst_basereg;
13786                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13787                                 break;
13788                         }
13789                         default:
13790                                 break;
13791                         }
13792                 }
13793         }
13794 #endif
13795
13796         if (cfg->compute_gc_maps) {
13797                 /* registers need liveness info even for !non refs */
13798                 for (i = 0; i < cfg->num_varinfo; i++) {
13799                         MonoInst *ins = cfg->varinfo [i];
13800
13801                         if (ins->opcode == OP_REGVAR)
13802                                 ins->flags |= MONO_INST_GC_TRACK;
13803                 }
13804         }
13805
13806         if (cfg->gsharedvt) {
13807                 gsharedvt_vreg_to_idx = mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13808
13809                 for (i = 0; i < cfg->num_varinfo; ++i) {
13810                         MonoInst *ins = cfg->varinfo [i];
13811                         int idx;
13812
13813                         if (mini_is_gsharedvt_variable_type (cfg, ins->inst_vtype)) {
13814                                 if (i >= cfg->locals_start) {
13815                                         /* Local */
13816                                         idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13817                                         gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13818                                         ins->opcode = OP_GSHAREDVT_LOCAL;
13819                                         ins->inst_imm = idx;
13820                                 } else {
13821                                         /* Arg */
13822                                         gsharedvt_vreg_to_idx [ins->dreg] = -1;
13823                                         ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13824                                 }
13825                         }
13826                 }
13827         }
13828
13829         /* FIXME: widening and truncation */
13830
13831         /*
13832          * As an optimization, when a variable allocated to the stack is first loaded into
13833          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13834          * the variable again.
13835          */
13836         orig_next_vreg = cfg->next_vreg;
13837         vreg_to_lvreg = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13838         lvregs = mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
13839         lvregs_len = 0;
13840
13841         /*
13842          * These arrays contain the first and last instructions accessing a given
13843          * variable.
13844          * Since we emit bblocks in the same order we process them here, and we
13845          * don't split live ranges, these will precisely describe the live range of
13846          * the variable, i.e. the instruction range where a valid value can be found
13847          * in the variables location.
13848          * The live range is computed using the liveness info computed by the liveness pass.
13849          * We can't use vmv->range, since that is an abstract live range, and we need
13850          * one which is instruction precise.
13851          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13852          */
13853         /* FIXME: Only do this if debugging info is requested */
13854         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13855         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13856         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13857         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13858
13859         /* Add spill loads/stores */
13860         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13861                 MonoInst *ins;
13862
13863                 if (cfg->verbose_level > 2)
13864                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13865
13866                 /* Clear vreg_to_lvreg array */
13867                 for (i = 0; i < lvregs_len; i++)
13868                         vreg_to_lvreg [lvregs [i]] = 0;
13869                 lvregs_len = 0;
13870
13871                 cfg->cbb = bb;
13872                 MONO_BB_FOR_EACH_INS (bb, ins) {
13873                         const char *spec = INS_INFO (ins->opcode);
13874                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13875                         gboolean store, no_lvreg;
13876                         int sregs [MONO_MAX_SRC_REGS];
13877
13878                         if (G_UNLIKELY (cfg->verbose_level > 2))
13879                                 mono_print_ins (ins);
13880
13881                         if (ins->opcode == OP_NOP)
13882                                 continue;
13883
13884                         /*
13885                          * We handle LDADDR here as well, since it can only be decomposed
13886                          * when variable addresses are known.
13887                          */
13888                         if (ins->opcode == OP_LDADDR) {
13889                                 MonoInst *var = ins->inst_p0;
13890
13891                                 if (var->opcode == OP_VTARG_ADDR) {
13892                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13893                                         MonoInst *vtaddr = var->inst_left;
13894                                         if (vtaddr->opcode == OP_REGVAR) {
13895                                                 ins->opcode = OP_MOVE;
13896                                                 ins->sreg1 = vtaddr->dreg;
13897                                         }
13898                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13899                                                 ins->opcode = OP_LOAD_MEMBASE;
13900                                                 ins->inst_basereg = vtaddr->inst_basereg;
13901                                                 ins->inst_offset = vtaddr->inst_offset;
13902                                         } else
13903                                                 NOT_IMPLEMENTED;
13904                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg] < 0) {
13905                                         /* gsharedvt arg passed by ref */
13906                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13907
13908                                         ins->opcode = OP_LOAD_MEMBASE;
13909                                         ins->inst_basereg = var->inst_basereg;
13910                                         ins->inst_offset = var->inst_offset;
13911                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg]) {
13912                                         MonoInst *load, *load2, *load3;
13913                                         int idx = gsharedvt_vreg_to_idx [var->dreg] - 1;
13914                                         int reg1, reg2, reg3;
13915                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13916                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13917
13918                                         /*
13919                                          * gsharedvt local.
13920                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13921                                          */
13922
13923                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13924
13925                                         g_assert (info_var);
13926                                         g_assert (locals_var);
13927
13928                                         /* Mark the instruction used to compute the locals var as used */
13929                                         cfg->gsharedvt_locals_var_ins = NULL;
13930
13931                                         /* Load the offset */
13932                                         if (info_var->opcode == OP_REGOFFSET) {
13933                                                 reg1 = alloc_ireg (cfg);
13934                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13935                                         } else if (info_var->opcode == OP_REGVAR) {
13936                                                 load = NULL;
13937                                                 reg1 = info_var->dreg;
13938                                         } else {
13939                                                 g_assert_not_reached ();
13940                                         }
13941                                         reg2 = alloc_ireg (cfg);
13942                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13943                                         /* Load the locals area address */
13944                                         reg3 = alloc_ireg (cfg);
13945                                         if (locals_var->opcode == OP_REGOFFSET) {
13946                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13947                                         } else if (locals_var->opcode == OP_REGVAR) {
13948                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13949                                         } else {
13950                                                 g_assert_not_reached ();
13951                                         }
13952                                         /* Compute the address */
13953                                         ins->opcode = OP_PADD;
13954                                         ins->sreg1 = reg3;
13955                                         ins->sreg2 = reg2;
13956
13957                                         mono_bblock_insert_before_ins (bb, ins, load3);
13958                                         mono_bblock_insert_before_ins (bb, load3, load2);
13959                                         if (load)
13960                                                 mono_bblock_insert_before_ins (bb, load2, load);
13961                                 } else {
13962                                         g_assert (var->opcode == OP_REGOFFSET);
13963
13964                                         ins->opcode = OP_ADD_IMM;
13965                                         ins->sreg1 = var->inst_basereg;
13966                                         ins->inst_imm = var->inst_offset;
13967                                 }
13968
13969                                 *need_local_opts = TRUE;
13970                                 spec = INS_INFO (ins->opcode);
13971                         }
13972
13973                         if (ins->opcode < MONO_CEE_LAST) {
13974                                 mono_print_ins (ins);
13975                                 g_assert_not_reached ();
13976                         }
13977
13978                         /*
13979                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13980                          * src register.
13981                          * FIXME:
13982                          */
13983                         if (MONO_IS_STORE_MEMBASE (ins)) {
13984                                 tmp_reg = ins->dreg;
13985                                 ins->dreg = ins->sreg2;
13986                                 ins->sreg2 = tmp_reg;
13987                                 store = TRUE;
13988
13989                                 spec2 [MONO_INST_DEST] = ' ';
13990                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13991                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13992                                 spec2 [MONO_INST_SRC3] = ' ';
13993                                 spec = spec2;
13994                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13995                                 g_assert_not_reached ();
13996                         else
13997                                 store = FALSE;
13998                         no_lvreg = FALSE;
13999
14000                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14001                                 printf ("\t %.3s %d", spec, ins->dreg);
14002                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14003                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14004                                         printf (" %d", sregs [srcindex]);
14005                                 printf ("\n");
14006                         }
14007
14008                         /***************/
14009                         /*    DREG     */
14010                         /***************/
14011                         regtype = spec [MONO_INST_DEST];
14012                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14013                         prev_dreg = -1;
14014
14015                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14016                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14017                                 MonoInst *store_ins;
14018                                 int store_opcode;
14019                                 MonoInst *def_ins = ins;
14020                                 int dreg = ins->dreg; /* The original vreg */
14021
14022                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14023
14024                                 if (var->opcode == OP_REGVAR) {
14025                                         ins->dreg = var->dreg;
14026                                 } 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)) {
14027                                         /*
14028                                          * Instead of emitting a load+store, use a _membase opcode.
14029                                          */
14030                                         g_assert (var->opcode == OP_REGOFFSET);
14031                                         if (ins->opcode == OP_MOVE) {
14032                                                 NULLIFY_INS (ins);
14033                                                 def_ins = NULL;
14034                                         } else {
14035                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14036                                                 ins->inst_basereg = var->inst_basereg;
14037                                                 ins->inst_offset = var->inst_offset;
14038                                                 ins->dreg = -1;
14039                                         }
14040                                         spec = INS_INFO (ins->opcode);
14041                                 } else {
14042                                         guint32 lvreg;
14043
14044                                         g_assert (var->opcode == OP_REGOFFSET);
14045
14046                                         prev_dreg = ins->dreg;
14047
14048                                         /* Invalidate any previous lvreg for this vreg */
14049                                         vreg_to_lvreg [ins->dreg] = 0;
14050
14051                                         lvreg = 0;
14052
14053                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14054                                                 regtype = 'l';
14055                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14056                                         }
14057
14058                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14059
14060 #if SIZEOF_REGISTER != 8
14061                                         if (regtype == 'l') {
14062                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
14063                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14064                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
14065                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14066                                                 def_ins = store_ins;
14067                                         }
14068                                         else
14069 #endif
14070                                         {
14071                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14072
14073                                                 /* Try to fuse the store into the instruction itself */
14074                                                 /* FIXME: Add more instructions */
14075                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14076                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14077                                                         ins->inst_imm = ins->inst_c0;
14078                                                         ins->inst_destbasereg = var->inst_basereg;
14079                                                         ins->inst_offset = var->inst_offset;
14080                                                         spec = INS_INFO (ins->opcode);
14081                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14082                                                         ins->opcode = store_opcode;
14083                                                         ins->inst_destbasereg = var->inst_basereg;
14084                                                         ins->inst_offset = var->inst_offset;
14085
14086                                                         no_lvreg = TRUE;
14087
14088                                                         tmp_reg = ins->dreg;
14089                                                         ins->dreg = ins->sreg2;
14090                                                         ins->sreg2 = tmp_reg;
14091                                                         store = TRUE;
14092
14093                                                         spec2 [MONO_INST_DEST] = ' ';
14094                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14095                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14096                                                         spec2 [MONO_INST_SRC3] = ' ';
14097                                                         spec = spec2;
14098                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14099                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14100                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14101                                                         ins->dreg = -1;
14102                                                         ins->inst_basereg = var->inst_basereg;
14103                                                         ins->inst_offset = var->inst_offset;
14104                                                         spec = INS_INFO (ins->opcode);
14105                                                 } else {
14106                                                         /* printf ("INS: "); mono_print_ins (ins); */
14107                                                         /* Create a store instruction */
14108                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14109
14110                                                         /* Insert it after the instruction */
14111                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14112
14113                                                         def_ins = store_ins;
14114
14115                                                         /*
14116                                                          * We can't assign ins->dreg to var->dreg here, since the
14117                                                          * sregs could use it. So set a flag, and do it after
14118                                                          * the sregs.
14119                                                          */
14120                                                         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)))
14121                                                                 dest_has_lvreg = TRUE;
14122                                                 }
14123                                         }
14124                                 }
14125
14126                                 if (def_ins && !live_range_start [dreg]) {
14127                                         live_range_start [dreg] = def_ins;
14128                                         live_range_start_bb [dreg] = bb;
14129                                 }
14130
14131                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14132                                         MonoInst *tmp;
14133
14134                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14135                                         tmp->inst_c1 = dreg;
14136                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14137                                 }
14138                         }
14139
14140                         /************/
14141                         /*  SREGS   */
14142                         /************/
14143                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14144                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14145                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14146                                 sreg = sregs [srcindex];
14147
14148                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14149                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14150                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14151                                         MonoInst *use_ins = ins;
14152                                         MonoInst *load_ins;
14153                                         guint32 load_opcode;
14154
14155                                         if (var->opcode == OP_REGVAR) {
14156                                                 sregs [srcindex] = var->dreg;
14157                                                 //mono_inst_set_src_registers (ins, sregs);
14158                                                 live_range_end [sreg] = use_ins;
14159                                                 live_range_end_bb [sreg] = bb;
14160
14161                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14162                                                         MonoInst *tmp;
14163
14164                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14165                                                         /* var->dreg is a hreg */
14166                                                         tmp->inst_c1 = sreg;
14167                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14168                                                 }
14169
14170                                                 continue;
14171                                         }
14172
14173                                         g_assert (var->opcode == OP_REGOFFSET);
14174
14175                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14176
14177                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14178
14179                                         if (vreg_to_lvreg [sreg]) {
14180                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14181
14182                                                 /* The variable is already loaded to an lvreg */
14183                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14184                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14185                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14186                                                 //mono_inst_set_src_registers (ins, sregs);
14187                                                 continue;
14188                                         }
14189
14190                                         /* Try to fuse the load into the instruction */
14191                                         if ((srcindex == 0) && (op_to_op_src1_membase (load_opcode, ins->opcode) != -1)) {
14192                                                 ins->opcode = op_to_op_src1_membase (load_opcode, ins->opcode);
14193                                                 sregs [0] = var->inst_basereg;
14194                                                 //mono_inst_set_src_registers (ins, sregs);
14195                                                 ins->inst_offset = var->inst_offset;
14196                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (load_opcode, ins->opcode) != -1)) {
14197                                                 ins->opcode = op_to_op_src2_membase (load_opcode, ins->opcode);
14198                                                 sregs [1] = var->inst_basereg;
14199                                                 //mono_inst_set_src_registers (ins, sregs);
14200                                                 ins->inst_offset = var->inst_offset;
14201                                         } else {
14202                                                 if (MONO_IS_REAL_MOVE (ins)) {
14203                                                         ins->opcode = OP_NOP;
14204                                                         sreg = ins->dreg;
14205                                                 } else {
14206                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14207
14208                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14209
14210                                                         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) {
14211                                                                 if (var->dreg == prev_dreg) {
14212                                                                         /*
14213                                                                          * sreg refers to the value loaded by the load
14214                                                                          * emitted below, but we need to use ins->dreg
14215                                                                          * since it refers to the store emitted earlier.
14216                                                                          */
14217                                                                         sreg = ins->dreg;
14218                                                                 }
14219                                                                 g_assert (sreg != -1);
14220                                                                 vreg_to_lvreg [var->dreg] = sreg;
14221                                                                 g_assert (lvregs_len < 1024);
14222                                                                 lvregs [lvregs_len ++] = var->dreg;
14223                                                         }
14224                                                 }
14225
14226                                                 sregs [srcindex] = sreg;
14227                                                 //mono_inst_set_src_registers (ins, sregs);
14228
14229 #if SIZEOF_REGISTER != 8
14230                                                 if (regtype == 'l') {
14231                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14232                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14233                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14234                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14235                                                         use_ins = load_ins;
14236                                                 }
14237                                                 else
14238 #endif
14239                                                 {
14240 #if SIZEOF_REGISTER == 4
14241                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14242 #endif
14243                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14244                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14245                                                         use_ins = load_ins;
14246                                                 }
14247                                         }
14248
14249                                         if (var->dreg < orig_next_vreg) {
14250                                                 live_range_end [var->dreg] = use_ins;
14251                                                 live_range_end_bb [var->dreg] = bb;
14252                                         }
14253
14254                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14255                                                 MonoInst *tmp;
14256
14257                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14258                                                 tmp->inst_c1 = var->dreg;
14259                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14260                                         }
14261                                 }
14262                         }
14263                         mono_inst_set_src_registers (ins, sregs);
14264
14265                         if (dest_has_lvreg) {
14266                                 g_assert (ins->dreg != -1);
14267                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14268                                 g_assert (lvregs_len < 1024);
14269                                 lvregs [lvregs_len ++] = prev_dreg;
14270                                 dest_has_lvreg = FALSE;
14271                         }
14272
14273                         if (store) {
14274                                 tmp_reg = ins->dreg;
14275                                 ins->dreg = ins->sreg2;
14276                                 ins->sreg2 = tmp_reg;
14277                         }
14278
14279                         if (MONO_IS_CALL (ins)) {
14280                                 /* Clear vreg_to_lvreg array */
14281                                 for (i = 0; i < lvregs_len; i++)
14282                                         vreg_to_lvreg [lvregs [i]] = 0;
14283                                 lvregs_len = 0;
14284                         } else if (ins->opcode == OP_NOP) {
14285                                 ins->dreg = -1;
14286                                 MONO_INST_NULLIFY_SREGS (ins);
14287                         }
14288
14289                         if (cfg->verbose_level > 2)
14290                                 mono_print_ins_index (1, ins);
14291                 }
14292
14293                 /* Extend the live range based on the liveness info */
14294                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14295                         for (i = 0; i < cfg->num_varinfo; i ++) {
14296                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14297
14298                                 if (vreg_is_volatile (cfg, vi->vreg))
14299                                         /* The liveness info is incomplete */
14300                                         continue;
14301
14302                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14303                                         /* Live from at least the first ins of this bb */
14304                                         live_range_start [vi->vreg] = bb->code;
14305                                         live_range_start_bb [vi->vreg] = bb;
14306                                 }
14307
14308                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14309                                         /* Live at least until the last ins of this bb */
14310                                         live_range_end [vi->vreg] = bb->last_ins;
14311                                         live_range_end_bb [vi->vreg] = bb;
14312                                 }
14313                         }
14314                 }
14315         }
14316
14317 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
14318         /*
14319          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14320          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14321          */
14322         if (cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14323                 for (i = 0; i < cfg->num_varinfo; ++i) {
14324                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14325                         MonoInst *ins;
14326
14327                         if (live_range_start [vreg]) {
14328                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14329                                 ins->inst_c0 = i;
14330                                 ins->inst_c1 = vreg;
14331                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14332                         }
14333                         if (live_range_end [vreg]) {
14334                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14335                                 ins->inst_c0 = i;
14336                                 ins->inst_c1 = vreg;
14337                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14338                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14339                                 else
14340                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14341                         }
14342                 }
14343         }
14344 #endif
14345
14346         if (cfg->gsharedvt_locals_var_ins) {
14347                 /* Nullify if unused */
14348                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14349                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14350         }
14351
14352         g_free (live_range_start);
14353         g_free (live_range_end);
14354         g_free (live_range_start_bb);
14355         g_free (live_range_end_bb);
14356 }
14357
14358 /**
14359  * FIXME:
14360  * - use 'iadd' instead of 'int_add'
14361  * - handling ovf opcodes: decompose in method_to_ir.
14362  * - unify iregs/fregs
14363  *   -> partly done, the missing parts are:
14364  *   - a more complete unification would involve unifying the hregs as well, so
14365  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14366  *     would no longer map to the machine hregs, so the code generators would need to
14367  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14368  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14369  *     fp/non-fp branches speeds it up by about 15%.
14370  * - use sext/zext opcodes instead of shifts
14371  * - add OP_ICALL
14372  * - get rid of TEMPLOADs if possible and use vregs instead
14373  * - clean up usage of OP_P/OP_ opcodes
14374  * - cleanup usage of DUMMY_USE
14375  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14376  *   stack
14377  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14378  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14379  * - make sure handle_stack_args () is called before the branch is emitted
14380  * - when the new IR is done, get rid of all unused stuff
14381  * - COMPARE/BEQ as separate instructions or unify them ?
14382  *   - keeping them separate allows specialized compare instructions like
14383  *     compare_imm, compare_membase
14384  *   - most back ends unify fp compare+branch, fp compare+ceq
14385  * - integrate mono_save_args into inline_method
14386  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14387  * - handle long shift opts on 32 bit platforms somehow: they require
14388  *   3 sregs (2 for arg1 and 1 for arg2)
14389  * - make byref a 'normal' type.
14390  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14391  *   variable if needed.
14392  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14393  *   like inline_method.
14394  * - remove inlining restrictions
14395  * - fix LNEG and enable cfold of INEG
14396  * - generalize x86 optimizations like ldelema as a peephole optimization
14397  * - add store_mem_imm for amd64
14398  * - optimize the loading of the interruption flag in the managed->native wrappers
14399  * - avoid special handling of OP_NOP in passes
14400  * - move code inserting instructions into one function/macro.
14401  * - try a coalescing phase after liveness analysis
14402  * - add float -> vreg conversion + local optimizations on !x86
14403  * - figure out how to handle decomposed branches during optimizations, ie.
14404  *   compare+branch, op_jump_table+op_br etc.
14405  * - promote RuntimeXHandles to vregs
14406  * - vtype cleanups:
14407  *   - add a NEW_VARLOADA_VREG macro
14408  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14409  *   accessing vtype fields.
14410  * - get rid of I8CONST on 64 bit platforms
14411  * - dealing with the increase in code size due to branches created during opcode
14412  *   decomposition:
14413  *   - use extended basic blocks
14414  *     - all parts of the JIT
14415  *     - handle_global_vregs () && local regalloc
14416  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14417  * - sources of increase in code size:
14418  *   - vtypes
14419  *   - long compares
14420  *   - isinst and castclass
14421  *   - lvregs not allocated to global registers even if used multiple times
14422  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14423  *   meaningful.
14424  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14425  * - add all micro optimizations from the old JIT
14426  * - put tree optimizations into the deadce pass
14427  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14428  *   specific function.
14429  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14430  *   fcompare + branchCC.
14431  * - create a helper function for allocating a stack slot, taking into account
14432  *   MONO_CFG_HAS_SPILLUP.
14433  * - merge r68207.
14434  * - merge the ia64 switch changes.
14435  * - optimize mono_regstate2_alloc_int/float.
14436  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14437  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14438  *   parts of the tree could be separated by other instructions, killing the tree
14439  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14440  *   instructions if the result of the load is used multiple times ?
14441  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14442  * - LAST MERGE: 108395.
14443  * - when returning vtypes in registers, generate IR and append it to the end of the
14444  *   last bb instead of doing it in the epilog.
14445  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14446  */
14447
14448 /*
14449
14450 NOTES
14451 -----
14452
14453 - When to decompose opcodes:
14454   - earlier: this makes some optimizations hard to implement, since the low level IR
14455   no longer contains the neccessary information. But it is easier to do.
14456   - later: harder to implement, enables more optimizations.
14457 - Branches inside bblocks:
14458   - created when decomposing complex opcodes.
14459     - branches to another bblock: harmless, but not tracked by the branch
14460       optimizations, so need to branch to a label at the start of the bblock.
14461     - branches to inside the same bblock: very problematic, trips up the local
14462       reg allocator. Can be fixed by spitting the current bblock, but that is a
14463       complex operation, since some local vregs can become global vregs etc.
14464 - Local/global vregs:
14465   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14466     local register allocator.
14467   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14468     structure, created by mono_create_var (). Assigned to hregs or the stack by
14469     the global register allocator.
14470 - When to do optimizations like alu->alu_imm:
14471   - earlier -> saves work later on since the IR will be smaller/simpler
14472   - later -> can work on more instructions
14473 - Handling of valuetypes:
14474   - When a vtype is pushed on the stack, a new temporary is created, an
14475     instruction computing its address (LDADDR) is emitted and pushed on
14476     the stack. Need to optimize cases when the vtype is used immediately as in
14477     argument passing, stloc etc.
14478 - Instead of the to_end stuff in the old JIT, simply call the function handling
14479   the values on the stack before emitting the last instruction of the bb.
14480 */
14481
14482 #endif /* DISABLE_JIT */