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
  37 #include <mono/metadata/assembly.h>
  38 #include <mono/metadata/attrdefs.h>
  39 #include <mono/metadata/loader.h>
  40 #include <mono/metadata/tabledefs.h>
  41 #include <mono/metadata/class.h>
  42 #include <mono/metadata/object.h>
  43 #include <mono/metadata/exception.h>
  44 #include <mono/metadata/opcodes.h>
  45 #include <mono/metadata/mono-endian.h>
  46 #include <mono/metadata/tokentype.h>
  47 #include <mono/metadata/tabledefs.h>
  48 #include <mono/metadata/marshal.h>
  49 #include <mono/metadata/debug-helpers.h>
  50 #include <mono/metadata/mono-debug.h>
  51 #include <mono/metadata/gc-internal.h>
  52 #include <mono/metadata/security-manager.h>
  53 #include <mono/metadata/threads-types.h>
  54 #include <mono/metadata/security-core-clr.h>
  55 #include <mono/metadata/monitor.h>
  56 #include <mono/metadata/profiler-private.h>
  57 #include <mono/metadata/profiler.h>
  58 #include <mono/metadata/debug-mono-symfile.h>
  59 #include <mono/utils/mono-compiler.h>
  60 #include <mono/utils/mono-memory-model.h>
  61 #include <mono/metadata/mono-basic-block.h>
  62
  63 #include "mini.h"
  64 #include "trace.h"
  65
  66 #include "ir-emit.h"
  67
  68 #include "jit-icalls.h"
  69 #include "jit.h"
  70 #include "debugger-agent.h"
  71
  72 #define BRANCH_COST 10
  73 #define INLINE_LENGTH_LIMIT 20
  74 #define INLINE_FAILURE(msg) do {                                                                        \
  75         if ((cfg->method != method) && (method->wrapper_type == MONO_WRAPPER_NONE)) { \
  76                 if (cfg->verbose_level >= 2)                                                                    \
  77                         printf ("inline failed: %s\n", msg);                                            \
  78                 goto inline_failure;                                                                                    \
  79         } \
  80         } while (0)
  81 #define CHECK_CFG_EXCEPTION do {\
  82                 if (cfg->exception_type != MONO_EXCEPTION_NONE)\
  83                         goto exception_exit;\
  84         } while (0)
  85 #define METHOD_ACCESS_FAILURE do {      \
  86                 char *method_fname = mono_method_full_name (method, TRUE);      \
  87                 char *cil_method_fname = mono_method_full_name (cil_method, TRUE);      \
  88                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_METHOD_ACCESS);             \
  89                 cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);    \
  90                 g_free (method_fname);  \
  91                 g_free (cil_method_fname);      \
  92                 goto exception_exit;    \
  93         } while (0)
  94 #define FIELD_ACCESS_FAILURE do {       \
  95                 char *method_fname = mono_method_full_name (method, TRUE);      \
  96                 char *field_fname = mono_field_full_name (field);       \
  97                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_FIELD_ACCESS);              \
  98                 cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);  \
  99                 g_free (method_fname);  \
 100                 g_free (field_fname);   \
 101                 goto exception_exit;    \
 102         } while (0)
 103 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 104                 if (cfg->generic_sharing_context) {     \
 105             if (cfg->verbose_level > 2) \
 106                             printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", method->klass->name_space, method->klass->name, method->name, method->signature->param_count, mono_opcode_name ((opcode)), __LINE__); \
 107                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 108                         goto exception_exit;    \
 109                 }                       \
 110         } while (0)
 111 #define GSHAREDVT_FAILURE(opcode) do {          \
 112         if (cfg->gsharedvt) {                                                                                           \
 113                 cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", method->klass->name_space, method->klass->name, method->name, method->signature->param_count, mono_opcode_name ((opcode)), __FILE__, __LINE__); \
 114                 if (cfg->verbose_level >= 2)                                                                    \
 115                         printf ("%s\n", cfg->exception_message); \
 116                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 117                 goto exception_exit;                                                                                    \
 118         }                                                                                                                                       \
 119         } while (0)
 120 #define OUT_OF_MEMORY_FAILURE do {      \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_OUT_OF_MEMORY);             \
 122                 goto exception_exit;    \
 123         } while (0)
 124 /* Determine whenever 'ins' represents a load of the 'this' argument */
 125 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 126
 127 static int ldind_to_load_membase (int opcode);
 128 static int stind_to_store_membase (int opcode);
 129
 130 int mono_op_to_op_imm (int opcode);
 131 int mono_op_to_op_imm_noemul (int opcode);
 132
 133 MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 134
 135 /* helper methods signatures */
 136 static MonoMethodSignature *helper_sig_class_init_trampoline = NULL;
 137 static MonoMethodSignature *helper_sig_domain_get = NULL;
 138 static MonoMethodSignature *helper_sig_generic_class_init_trampoline = NULL;
 139 static MonoMethodSignature *helper_sig_generic_class_init_trampoline_llvm = NULL;
 140 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline = NULL;
 141 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline = NULL;
 142 static MonoMethodSignature *helper_sig_monitor_enter_exit_trampoline_llvm = NULL;
 143
 144 /*
 145  * Instruction metadata
 146  */
 147 #ifdef MINI_OP
 148 #undef MINI_OP
 149 #endif
 150 #ifdef MINI_OP3
 151 #undef MINI_OP3
 152 #endif
 153 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 154 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 155 #define NONE ' '
 156 #define IREG 'i'
 157 #define FREG 'f'
 158 #define VREG 'v'
 159 #define XREG 'x'
 160 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 161 #define LREG IREG
 162 #else
 163 #define LREG 'l'
 164 #endif
 165 /* keep in sync with the enum in mini.h */
 166 const char
 167 ins_info[] = {
 168 #include "mini-ops.h"
 169 };
 170 #undef MINI_OP
 171 #undef MINI_OP3
 172
 173 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 174 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 175 /*
 176  * This should contain the index of the last sreg + 1. This is not the same
 177  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 178  */
 179 const gint8 ins_sreg_counts[] = {
 180 #include "mini-ops.h"
 181 };
 182 #undef MINI_OP
 183 #undef MINI_OP3
 184
 185 #define MONO_INIT_VARINFO(vi,id) do { \
 186         (vi)->range.first_use.pos.bid = 0xffff; \
 187         (vi)->reg = -1; \
 188         (vi)->idx = (id); \
 189 } while (0)
 190
 191 void
 192 mono_inst_set_src_registers (MonoInst *ins, int *regs)
 193 {
 194         ins->sreg1 = regs [0];
 195         ins->sreg2 = regs [1];
 196         ins->sreg3 = regs [2];
 197 }
 198
 199 guint32
 200 mono_alloc_ireg (MonoCompile *cfg)
 201 {
 202         return alloc_ireg (cfg);
 203 }
 204
 205 guint32
 206 mono_alloc_freg (MonoCompile *cfg)
 207 {
 208         return alloc_freg (cfg);
 209 }
 210
 211 guint32
 212 mono_alloc_preg (MonoCompile *cfg)
 213 {
 214         return alloc_preg (cfg);
 215 }
 216
 217 guint32
 218 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 219 {
 220         return alloc_dreg (cfg, stack_type);
 221 }
 222
 223 /*
 224  * mono_alloc_ireg_ref:
 225  *
 226  *   Allocate an IREG, and mark it as holding a GC ref.
 227  */
 228 guint32
 229 mono_alloc_ireg_ref (MonoCompile *cfg)
 230 {
 231         return alloc_ireg_ref (cfg);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_mp:
 236  *
 237  *   Allocate an IREG, and mark it as holding a managed pointer.
 238  */
 239 guint32
 240 mono_alloc_ireg_mp (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_mp (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_copy:
 247  *
 248  *   Allocate an IREG with the same GC type as VREG.
 249  */
 250 guint32
 251 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 252 {
 253         if (vreg_is_ref (cfg, vreg))
 254                 return alloc_ireg_ref (cfg);
 255         else if (vreg_is_mp (cfg, vreg))
 256                 return alloc_ireg_mp (cfg);
 257         else
 258                 return alloc_ireg (cfg);
 259 }
 260
 261 guint
 262 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 263 {
 264         if (type->byref)
 265                 return OP_MOVE;
 266
 267 handle_enum:
 268         switch (type->type) {
 269         case MONO_TYPE_I1:
 270         case MONO_TYPE_U1:
 271         case MONO_TYPE_BOOLEAN:
 272                 return OP_MOVE;
 273         case MONO_TYPE_I2:
 274         case MONO_TYPE_U2:
 275         case MONO_TYPE_CHAR:
 276                 return OP_MOVE;
 277         case MONO_TYPE_I4:
 278         case MONO_TYPE_U4:
 279                 return OP_MOVE;
 280         case MONO_TYPE_I:
 281         case MONO_TYPE_U:
 282         case MONO_TYPE_PTR:
 283         case MONO_TYPE_FNPTR:
 284                 return OP_MOVE;
 285         case MONO_TYPE_CLASS:
 286         case MONO_TYPE_STRING:
 287         case MONO_TYPE_OBJECT:
 288         case MONO_TYPE_SZARRAY:
 289         case MONO_TYPE_ARRAY:
 290                 return OP_MOVE;
 291         case MONO_TYPE_I8:
 292         case MONO_TYPE_U8:
 293 #if SIZEOF_REGISTER == 8
 294                 return OP_MOVE;
 295 #else
 296                 return OP_LMOVE;
 297 #endif
 298         case MONO_TYPE_R4:
 299                 return OP_FMOVE;
 300         case MONO_TYPE_R8:
 301                 return OP_FMOVE;
 302         case MONO_TYPE_VALUETYPE:
 303                 if (type->data.klass->enumtype) {
 304                         type = mono_class_enum_basetype (type->data.klass);
 305                         goto handle_enum;
 306                 }
 307                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 308                         return OP_XMOVE;
 309                 return OP_VMOVE;
 310         case MONO_TYPE_TYPEDBYREF:
 311                 return OP_VMOVE;
 312         case MONO_TYPE_GENERICINST:
 313                 type = &type->data.generic_class->container_class->byval_arg;
 314                 goto handle_enum;
 315         case MONO_TYPE_VAR:
 316         case MONO_TYPE_MVAR:
 317                 g_assert (cfg->generic_sharing_context);
 318                 if (mini_type_var_is_vt (cfg, type))
 319                         return OP_VMOVE;
 320                 else
 321                         return OP_MOVE;
 322         default:
 323                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 324         }
 325         return -1;
 326 }
 327
 328 void
 329 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 330 {
 331         int i;
 332         MonoInst *tree;
 333
 334         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 335         for (i = 0; i < bb->in_count; ++i)
 336                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 337         printf (", OUT: ");
 338         for (i = 0; i < bb->out_count; ++i)
 339                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 340         printf (" ]\n");
 341         for (tree = bb->code; tree; tree = tree->next)
 342                 mono_print_ins_index (-1, tree);
 343 }
 344
 345 void
 346 mono_create_helper_signatures (void)
 347 {
 348         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 349         helper_sig_class_init_trampoline = mono_create_icall_signature ("void");
 350         helper_sig_generic_class_init_trampoline = mono_create_icall_signature ("void");
 351         helper_sig_generic_class_init_trampoline_llvm = mono_create_icall_signature ("void ptr");
 352         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 353         helper_sig_monitor_enter_exit_trampoline = mono_create_icall_signature ("void");
 354         helper_sig_monitor_enter_exit_trampoline_llvm = mono_create_icall_signature ("void object");
 355 }
 356
 357 /*
 358  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 359  * foo<T> (int i) { ldarg.0; box T; }
 360  */
 361 #define UNVERIFIED do { \
 362         if (cfg->gsharedvt) { \
 363                 if (cfg->verbose_level > 2)                                                                     \
 364                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 365                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 366                 goto exception_exit;                                                                                    \
 367         }                                                                                                                                       \
 368         if (mini_get_debug_options ()->break_on_unverified) \
 369                 G_BREAKPOINT (); \
 370         else \
 371                 goto unverified; \
 372 } while (0)
 373
 374 #define LOAD_ERROR do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else goto load_error; } while (0)
 375
 376 #define TYPE_LOAD_ERROR(klass) do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else { cfg->exception_ptr = klass; goto load_error; } } while (0)
 377
 378 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 379                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 380                 if (!(tblock)) {        \
 381                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 382             NEW_BBLOCK (cfg, (tblock)); \
 383                         (tblock)->cil_code = (ip);      \
 384                         ADD_BBLOCK (cfg, (tblock));     \
 385                 } \
 386         } while (0)
 387
 388 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 389 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 390                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 391                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 392                 (dest)->sreg1 = (sr1); \
 393                 (dest)->sreg2 = (sr2); \
 394                 (dest)->inst_imm = (imm); \
 395                 (dest)->backend.shift_amount = (shift); \
 396                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 397         } while (0)
 398 #endif
 399
 400 #if SIZEOF_REGISTER == 8
 401 #define ADD_WIDEN_OP(ins, arg1, arg2) do { \
 402                 /* FIXME: Need to add many more cases */ \
 403                 if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {    \
 404                         MonoInst *widen; \
 405                         int dr = alloc_preg (cfg); \
 406                         EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg); \
 407                         (ins)->sreg2 = widen->dreg; \
 408                 } \
 409         } while (0)
 410 #else
 411 #define ADD_WIDEN_OP(ins, arg1, arg2)
 412 #endif
 413
 414 #define ADD_BINOP(op) do {      \
 415                 MONO_INST_NEW (cfg, ins, (op)); \
 416                 sp -= 2;        \
 417                 ins->sreg1 = sp [0]->dreg;      \
 418                 ins->sreg2 = sp [1]->dreg;      \
 419                 type_from_op (ins, sp [0], sp [1]);     \
 420                 CHECK_TYPE (ins);       \
 421                 /* Have to insert a widening op */               \
 422         ADD_WIDEN_OP (ins, sp [0], sp [1]); \
 423         ins->dreg = alloc_dreg ((cfg), (ins)->type); \
 424         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 425         *sp++ = mono_decompose_opcode ((cfg), (ins)); \
 426         } while (0)
 427
 428 #define ADD_UNOP(op) do {       \
 429                 MONO_INST_NEW (cfg, ins, (op)); \
 430                 sp--;   \
 431                 ins->sreg1 = sp [0]->dreg;      \
 432                 type_from_op (ins, sp [0], NULL);       \
 433                 CHECK_TYPE (ins);       \
 434         (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
 435         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 436                 *sp++ = mono_decompose_opcode (cfg, ins); \
 437         } while (0)
 438
 439 #define ADD_BINCOND(next_block) do {    \
 440                 MonoInst *cmp;  \
 441                 sp -= 2; \
 442                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 443                 cmp->sreg1 = sp [0]->dreg;      \
 444                 cmp->sreg2 = sp [1]->dreg;      \
 445                 type_from_op (cmp, sp [0], sp [1]);     \
 446                 CHECK_TYPE (cmp);       \
 447                 type_from_op (ins, sp [0], sp [1]);     \
 448                 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);      \
 449                 GET_BBLOCK (cfg, tblock, target);               \
 450                 link_bblock (cfg, bblock, tblock);      \
 451                 ins->inst_true_bb = tblock;     \
 452                 if ((next_block)) {     \
 453                         link_bblock (cfg, bblock, (next_block));        \
 454                         ins->inst_false_bb = (next_block);      \
 455                         start_new_bblock = 1;   \
 456                 } else {        \
 457                         GET_BBLOCK (cfg, tblock, ip);           \
 458                         link_bblock (cfg, bblock, tblock);      \
 459                         ins->inst_false_bb = tblock;    \
 460                         start_new_bblock = 2;   \
 461                 }       \
 462                 if (sp != stack_start) {                                                                        \
 463                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 464                         CHECK_UNVERIFIABLE (cfg); \
 465                 } \
 466         MONO_ADD_INS (bblock, cmp); \
 467                 MONO_ADD_INS (bblock, ins);     \
 468         } while (0)
 469
 470 /* *
 471  * link_bblock: Links two basic blocks
 472  *
 473  * links two basic blocks in the control flow graph, the 'from'
 474  * argument is the starting block and the 'to' argument is the block
 475  * the control flow ends to after 'from'.
 476  */
 477 static void
 478 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 479 {
 480         MonoBasicBlock **newa;
 481         int i, found;
 482
 483 #if 0
 484         if (from->cil_code) {
 485                 if (to->cil_code)
 486                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 487                 else
 488                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 489         } else {
 490                 if (to->cil_code)
 491                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 492                 else
 493                         printf ("edge from entry to exit\n");
 494         }
 495 #endif
 496
 497         found = FALSE;
 498         for (i = 0; i < from->out_count; ++i) {
 499                 if (to == from->out_bb [i]) {
 500                         found = TRUE;
 501                         break;
 502                 }
 503         }
 504         if (!found) {
 505                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 506                 for (i = 0; i < from->out_count; ++i) {
 507                         newa [i] = from->out_bb [i];
 508                 }
 509                 newa [i] = to;
 510                 from->out_count++;
 511                 from->out_bb = newa;
 512         }
 513
 514         found = FALSE;
 515         for (i = 0; i < to->in_count; ++i) {
 516                 if (from == to->in_bb [i]) {
 517                         found = TRUE;
 518                         break;
 519                 }
 520         }
 521         if (!found) {
 522                 newa = mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 523                 for (i = 0; i < to->in_count; ++i) {
 524                         newa [i] = to->in_bb [i];
 525                 }
 526                 newa [i] = from;
 527                 to->in_count++;
 528                 to->in_bb = newa;
 529         }
 530 }
 531
 532 void
 533 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 534 {
 535         link_bblock (cfg, from, to);
 536 }
 537
 538 /**
 539  * mono_find_block_region:
 540  *
 541  *   We mark each basic block with a region ID. We use that to avoid BB
 542  *   optimizations when blocks are in different regions.
 543  *
 544  * Returns:
 545  *   A region token that encodes where this region is, and information
 546  *   about the clause owner for this block.
 547  *
 548  *   The region encodes the try/catch/filter clause that owns this block
 549  *   as well as the type.  -1 is a special value that represents a block
 550  *   that is in none of try/catch/filter.
 551  */
 552 static int
 553 mono_find_block_region (MonoCompile *cfg, int offset)
 554 {
 555         MonoMethodHeader *header = cfg->header;
 556         MonoExceptionClause *clause;
 557         int i;
 558
 559         for (i = 0; i < header->num_clauses; ++i) {
 560                 clause = &header->clauses [i];
 561                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 562                     (offset < (clause->handler_offset)))
 563                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 564
 565                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 566                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 567                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 568                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 569                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 570                         else
 571                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 572                 }
 573
 574                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 575                         return ((i + 1) << 8) | clause->flags;
 576         }
 577
 578         return -1;
 579 }
 580
 581 static GList*
 582 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 583 {
 584         MonoMethodHeader *header = cfg->header;
 585         MonoExceptionClause *clause;
 586         int i;
 587         GList *res = NULL;
 588
 589         for (i = 0; i < header->num_clauses; ++i) {
 590                 clause = &header->clauses [i];
 591                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 592                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 593                         if (clause->flags == type)
 594                                 res = g_list_append (res, clause);
 595                 }
 596         }
 597         return res;
 598 }
 599
 600 static void
 601 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 602 {
 603         MonoInst *var;
 604
 605         var = g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 606         if (var)
 607                 return;
 608
 609         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 610         /* prevent it from being register allocated */
 611         var->flags |= MONO_INST_INDIRECT;
 612
 613         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 614 }
 615
 616 MonoInst *
 617 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 618 {
 619         return g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 620 }
 621
 622 static MonoInst*
 623 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 624 {
 625         MonoInst *var;
 626
 627         var = g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 628         if (var)
 629                 return var;
 630
 631         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 632         /* prevent it from being register allocated */
 633         var->flags |= MONO_INST_INDIRECT;
 634
 635         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 636
 637         return var;
 638 }
 639
 640 /*
 641  * Returns the type used in the eval stack when @type is loaded.
 642  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 643  */
 644 void
 645 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 646 {
 647         MonoClass *klass;
 648
 649         inst->klass = klass = mono_class_from_mono_type (type);
 650         if (type->byref) {
 651                 inst->type = STACK_MP;
 652                 return;
 653         }
 654
 655 handle_enum:
 656         switch (type->type) {
 657         case MONO_TYPE_VOID:
 658                 inst->type = STACK_INV;
 659                 return;
 660         case MONO_TYPE_I1:
 661         case MONO_TYPE_U1:
 662         case MONO_TYPE_BOOLEAN:
 663         case MONO_TYPE_I2:
 664         case MONO_TYPE_U2:
 665         case MONO_TYPE_CHAR:
 666         case MONO_TYPE_I4:
 667         case MONO_TYPE_U4:
 668                 inst->type = STACK_I4;
 669                 return;
 670         case MONO_TYPE_I:
 671         case MONO_TYPE_U:
 672         case MONO_TYPE_PTR:
 673         case MONO_TYPE_FNPTR:
 674                 inst->type = STACK_PTR;
 675                 return;
 676         case MONO_TYPE_CLASS:
 677         case MONO_TYPE_STRING:
 678         case MONO_TYPE_OBJECT:
 679         case MONO_TYPE_SZARRAY:
 680         case MONO_TYPE_ARRAY:
 681                 inst->type = STACK_OBJ;
 682                 return;
 683         case MONO_TYPE_I8:
 684         case MONO_TYPE_U8:
 685                 inst->type = STACK_I8;
 686                 return;
 687         case MONO_TYPE_R4:
 688         case MONO_TYPE_R8:
 689                 inst->type = STACK_R8;
 690                 return;
 691         case MONO_TYPE_VALUETYPE:
 692                 if (type->data.klass->enumtype) {
 693                         type = mono_class_enum_basetype (type->data.klass);
 694                         goto handle_enum;
 695                 } else {
 696                         inst->klass = klass;
 697                         inst->type = STACK_VTYPE;
 698                         return;
 699                 }
 700         case MONO_TYPE_TYPEDBYREF:
 701                 inst->klass = mono_defaults.typed_reference_class;
 702                 inst->type = STACK_VTYPE;
 703                 return;
 704         case MONO_TYPE_GENERICINST:
 705                 type = &type->data.generic_class->container_class->byval_arg;
 706                 goto handle_enum;
 707         case MONO_TYPE_VAR:
 708         case MONO_TYPE_MVAR:
 709                 g_assert (cfg->generic_sharing_context);
 710                 if (mini_is_gsharedvt_type (cfg, type)) {
 711                         g_assert (cfg->gsharedvt);
 712                         inst->type = STACK_VTYPE;
 713                 } else {
 714                         inst->type = STACK_OBJ;
 715                 }
 716                 return;
 717         default:
 718                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 719         }
 720 }
 721
 722 /*
 723  * The following tables are used to quickly validate the IL code in type_from_op ().
 724  */
 725 static const char
 726 bin_num_table [STACK_MAX] [STACK_MAX] = {
 727         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 728         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 729         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 730         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 731         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV},
 732         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 733         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 734         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 735 };
 736
 737 static const char
 738 neg_table [] = {
 739         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV
 740 };
 741
 742 /* reduce the size of this table */
 743 static const char
 744 bin_int_table [STACK_MAX] [STACK_MAX] = {
 745         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 746         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 747         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 748         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 749         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 750         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 751         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 752         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 753 };
 754
 755 static const char
 756 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 757 /*      Inv i  L  p  F  &  O  vt */
 758         {0},
 759         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 760         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 761         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 762         {0, 0, 0, 0, 1, 0, 0, 0}, /* F, R8 */
 763         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 764         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 765         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 766 };
 767
 768 /* reduce the size of this table */
 769 static const char
 770 shift_table [STACK_MAX] [STACK_MAX] = {
 771         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 772         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 773         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 774         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 775         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 776         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 777         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 778         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 779 };
 780
 781 /*
 782  * Tables to map from the non-specific opcode to the matching
 783  * type-specific opcode.
 784  */
 785 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 786 static const guint16
 787 binops_op_map [STACK_MAX] = {
 788         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD
 789 };
 790
 791 /* handles from CEE_NEG to CEE_CONV_U8 */
 792 static const guint16
 793 unops_op_map [STACK_MAX] = {
 794         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG
 795 };
 796
 797 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 798 static const guint16
 799 ovfops_op_map [STACK_MAX] = {
 800         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
 801 };
 802
 803 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 804 static const guint16
 805 ovf2ops_op_map [STACK_MAX] = {
 806         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
 807 };
 808
 809 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 810 static const guint16
 811 ovf3ops_op_map [STACK_MAX] = {
 812         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
 813 };
 814
 815 /* handles from CEE_BEQ to CEE_BLT_UN */
 816 static const guint16
 817 beqops_op_map [STACK_MAX] = {
 818         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
 819 };
 820
 821 /* handles from CEE_CEQ to CEE_CLT_UN */
 822 static const guint16
 823 ceqops_op_map [STACK_MAX] = {
 824         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
 825 };
 826
 827 /*
 828  * Sets ins->type (the type on the eval stack) according to the
 829  * type of the opcode and the arguments to it.
 830  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 831  *
 832  * FIXME: this function sets ins->type unconditionally in some cases, but
 833  * it should set it to invalid for some types (a conv.x on an object)
 834  */
 835 static void
 836 type_from_op (MonoInst *ins, MonoInst *src1, MonoInst *src2) {
 837
 838         switch (ins->opcode) {
 839         /* binops */
 840         case CEE_ADD:
 841         case CEE_SUB:
 842         case CEE_MUL:
 843         case CEE_DIV:
 844         case CEE_REM:
 845                 /* FIXME: check unverifiable args for STACK_MP */
 846                 ins->type = bin_num_table [src1->type] [src2->type];
 847                 ins->opcode += binops_op_map [ins->type];
 848                 break;
 849         case CEE_DIV_UN:
 850         case CEE_REM_UN:
 851         case CEE_AND:
 852         case CEE_OR:
 853         case CEE_XOR:
 854                 ins->type = bin_int_table [src1->type] [src2->type];
 855                 ins->opcode += binops_op_map [ins->type];
 856                 break;
 857         case CEE_SHL:
 858         case CEE_SHR:
 859         case CEE_SHR_UN:
 860                 ins->type = shift_table [src1->type] [src2->type];
 861                 ins->opcode += binops_op_map [ins->type];
 862                 break;
 863         case OP_COMPARE:
 864         case OP_LCOMPARE:
 865         case OP_ICOMPARE:
 866                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 867                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 868                         ins->opcode = OP_LCOMPARE;
 869                 else if (src1->type == STACK_R8)
 870                         ins->opcode = OP_FCOMPARE;
 871                 else
 872                         ins->opcode = OP_ICOMPARE;
 873                 break;
 874         case OP_ICOMPARE_IMM:
 875                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 876                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 877                         ins->opcode = OP_LCOMPARE_IMM;
 878                 break;
 879         case CEE_BEQ:
 880         case CEE_BGE:
 881         case CEE_BGT:
 882         case CEE_BLE:
 883         case CEE_BLT:
 884         case CEE_BNE_UN:
 885         case CEE_BGE_UN:
 886         case CEE_BGT_UN:
 887         case CEE_BLE_UN:
 888         case CEE_BLT_UN:
 889                 ins->opcode += beqops_op_map [src1->type];
 890                 break;
 891         case OP_CEQ:
 892                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 893                 ins->opcode += ceqops_op_map [src1->type];
 894                 break;
 895         case OP_CGT:
 896         case OP_CGT_UN:
 897         case OP_CLT:
 898         case OP_CLT_UN:
 899                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 900                 ins->opcode += ceqops_op_map [src1->type];
 901                 break;
 902         /* unops */
 903         case CEE_NEG:
 904                 ins->type = neg_table [src1->type];
 905                 ins->opcode += unops_op_map [ins->type];
 906                 break;
 907         case CEE_NOT:
 908                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
 909                         ins->type = src1->type;
 910                 else
 911                         ins->type = STACK_INV;
 912                 ins->opcode += unops_op_map [ins->type];
 913                 break;
 914         case CEE_CONV_I1:
 915         case CEE_CONV_I2:
 916         case CEE_CONV_I4:
 917         case CEE_CONV_U4:
 918                 ins->type = STACK_I4;
 919                 ins->opcode += unops_op_map [src1->type];
 920                 break;
 921         case CEE_CONV_R_UN:
 922                 ins->type = STACK_R8;
 923                 switch (src1->type) {
 924                 case STACK_I4:
 925                 case STACK_PTR:
 926                         ins->opcode = OP_ICONV_TO_R_UN;
 927                         break;
 928                 case STACK_I8:
 929                         ins->opcode = OP_LCONV_TO_R_UN;
 930                         break;
 931                 }
 932                 break;
 933         case CEE_CONV_OVF_I1:
 934         case CEE_CONV_OVF_U1:
 935         case CEE_CONV_OVF_I2:
 936         case CEE_CONV_OVF_U2:
 937         case CEE_CONV_OVF_I4:
 938         case CEE_CONV_OVF_U4:
 939                 ins->type = STACK_I4;
 940                 ins->opcode += ovf3ops_op_map [src1->type];
 941                 break;
 942         case CEE_CONV_OVF_I_UN:
 943         case CEE_CONV_OVF_U_UN:
 944                 ins->type = STACK_PTR;
 945                 ins->opcode += ovf2ops_op_map [src1->type];
 946                 break;
 947         case CEE_CONV_OVF_I1_UN:
 948         case CEE_CONV_OVF_I2_UN:
 949         case CEE_CONV_OVF_I4_UN:
 950         case CEE_CONV_OVF_U1_UN:
 951         case CEE_CONV_OVF_U2_UN:
 952         case CEE_CONV_OVF_U4_UN:
 953                 ins->type = STACK_I4;
 954                 ins->opcode += ovf2ops_op_map [src1->type];
 955                 break;
 956         case CEE_CONV_U:
 957                 ins->type = STACK_PTR;
 958                 switch (src1->type) {
 959                 case STACK_I4:
 960                         ins->opcode = OP_ICONV_TO_U;
 961                         break;
 962                 case STACK_PTR:
 963                 case STACK_MP:
 964 #if SIZEOF_VOID_P == 8
 965                         ins->opcode = OP_LCONV_TO_U;
 966 #else
 967                         ins->opcode = OP_MOVE;
 968 #endif
 969                         break;
 970                 case STACK_I8:
 971                         ins->opcode = OP_LCONV_TO_U;
 972                         break;
 973                 case STACK_R8:
 974                         ins->opcode = OP_FCONV_TO_U;
 975                         break;
 976                 }
 977                 break;
 978         case CEE_CONV_I8:
 979         case CEE_CONV_U8:
 980                 ins->type = STACK_I8;
 981                 ins->opcode += unops_op_map [src1->type];
 982                 break;
 983         case CEE_CONV_OVF_I8:
 984         case CEE_CONV_OVF_U8:
 985                 ins->type = STACK_I8;
 986                 ins->opcode += ovf3ops_op_map [src1->type];
 987                 break;
 988         case CEE_CONV_OVF_U8_UN:
 989         case CEE_CONV_OVF_I8_UN:
 990                 ins->type = STACK_I8;
 991                 ins->opcode += ovf2ops_op_map [src1->type];
 992                 break;
 993         case CEE_CONV_R4:
 994         case CEE_CONV_R8:
 995                 ins->type = STACK_R8;
 996                 ins->opcode += unops_op_map [src1->type];
 997                 break;
 998         case OP_CKFINITE:
 999                 ins->type = STACK_R8;
1000                 break;
1001         case CEE_CONV_U2:
1002         case CEE_CONV_U1:
1003                 ins->type = STACK_I4;
1004                 ins->opcode += ovfops_op_map [src1->type];
1005                 break;
1006         case CEE_CONV_I:
1007         case CEE_CONV_OVF_I:
1008         case CEE_CONV_OVF_U:
1009                 ins->type = STACK_PTR;
1010                 ins->opcode += ovfops_op_map [src1->type];
1011                 break;
1012         case CEE_ADD_OVF:
1013         case CEE_ADD_OVF_UN:
1014         case CEE_MUL_OVF:
1015         case CEE_MUL_OVF_UN:
1016         case CEE_SUB_OVF:
1017         case CEE_SUB_OVF_UN:
1018                 ins->type = bin_num_table [src1->type] [src2->type];
1019                 ins->opcode += ovfops_op_map [src1->type];
1020                 if (ins->type == STACK_R8)
1021                         ins->type = STACK_INV;
1022                 break;
1023         case OP_LOAD_MEMBASE:
1024                 ins->type = STACK_PTR;
1025                 break;
1026         case OP_LOADI1_MEMBASE:
1027         case OP_LOADU1_MEMBASE:
1028         case OP_LOADI2_MEMBASE:
1029         case OP_LOADU2_MEMBASE:
1030         case OP_LOADI4_MEMBASE:
1031         case OP_LOADU4_MEMBASE:
1032                 ins->type = STACK_PTR;
1033                 break;
1034         case OP_LOADI8_MEMBASE:
1035                 ins->type = STACK_I8;
1036                 break;
1037         case OP_LOADR4_MEMBASE:
1038         case OP_LOADR8_MEMBASE:
1039                 ins->type = STACK_R8;
1040                 break;
1041         default:
1042                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1043                 break;
1044         }
1045
1046         if (ins->type == STACK_MP)
1047                 ins->klass = mono_defaults.object_class;
1048 }
1049
1050 static const char
1051 ldind_type [] = {
1052         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1053 };
1054
1055 #if 0
1056
1057 static const char
1058 param_table [STACK_MAX] [STACK_MAX] = {
1059         {0},
1060 };
1061
1062 static int
1063 check_values_to_signature (MonoInst *args, MonoType *this, MonoMethodSignature *sig) {
1064         int i;
1065
1066         if (sig->hasthis) {
1067                 switch (args->type) {
1068                 case STACK_I4:
1069                 case STACK_I8:
1070                 case STACK_R8:
1071                 case STACK_VTYPE:
1072                 case STACK_INV:
1073                         return 0;
1074                 }
1075                 args++;
1076         }
1077         for (i = 0; i < sig->param_count; ++i) {
1078                 switch (args [i].type) {
1079                 case STACK_INV:
1080                         return 0;
1081                 case STACK_MP:
1082                         if (!sig->params [i]->byref)
1083                                 return 0;
1084                         continue;
1085                 case STACK_OBJ:
1086                         if (sig->params [i]->byref)
1087                                 return 0;
1088                         switch (sig->params [i]->type) {
1089                         case MONO_TYPE_CLASS:
1090                         case MONO_TYPE_STRING:
1091                         case MONO_TYPE_OBJECT:
1092                         case MONO_TYPE_SZARRAY:
1093                         case MONO_TYPE_ARRAY:
1094                                 break;
1095                         default:
1096                                 return 0;
1097                         }
1098                         continue;
1099                 case STACK_R8:
1100                         if (sig->params [i]->byref)
1101                                 return 0;
1102                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1103                                 return 0;
1104                         continue;
1105                 case STACK_PTR:
1106                 case STACK_I4:
1107                 case STACK_I8:
1108                 case STACK_VTYPE:
1109                         break;
1110                 }
1111                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1112                         return 0;*/
1113         }
1114         return 1;
1115 }
1116 #endif
1117
1118 /*
1119  * When we need a pointer to the current domain many times in a method, we
1120  * call mono_domain_get() once and we store the result in a local variable.
1121  * This function returns the variable that represents the MonoDomain*.
1122  */
1123 inline static MonoInst *
1124 mono_get_domainvar (MonoCompile *cfg)
1125 {
1126         if (!cfg->domainvar)
1127                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1128         return cfg->domainvar;
1129 }
1130
1131 /*
1132  * The got_var contains the address of the Global Offset Table when AOT
1133  * compiling.
1134  */
1135 MonoInst *
1136 mono_get_got_var (MonoCompile *cfg)
1137 {
1138 #ifdef MONO_ARCH_NEED_GOT_VAR
1139         if (!cfg->compile_aot)
1140                 return NULL;
1141         if (!cfg->got_var) {
1142                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1143         }
1144         return cfg->got_var;
1145 #else
1146         return NULL;
1147 #endif
1148 }
1149
1150 static MonoInst *
1151 mono_get_vtable_var (MonoCompile *cfg)
1152 {
1153         g_assert (cfg->generic_sharing_context);
1154
1155         if (!cfg->rgctx_var) {
1156                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1157                 /* force the var to be stack allocated */
1158                 cfg->rgctx_var->flags |= MONO_INST_INDIRECT;
1159         }
1160
1161         return cfg->rgctx_var;
1162 }
1163
1164 static MonoType*
1165 type_from_stack_type (MonoInst *ins) {
1166         switch (ins->type) {
1167         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1168         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1169         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1170         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1171         case STACK_MP:
1172                 return &ins->klass->this_arg;
1173         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1174         case STACK_VTYPE: return &ins->klass->byval_arg;
1175         default:
1176                 g_error ("stack type %d to monotype not handled\n", ins->type);
1177         }
1178         return NULL;
1179 }
1180
1181 static G_GNUC_UNUSED int
1182 type_to_stack_type (MonoType *t)
1183 {
1184         t = mono_type_get_underlying_type (t);
1185         switch (t->type) {
1186         case MONO_TYPE_I1:
1187         case MONO_TYPE_U1:
1188         case MONO_TYPE_BOOLEAN:
1189         case MONO_TYPE_I2:
1190         case MONO_TYPE_U2:
1191         case MONO_TYPE_CHAR:
1192         case MONO_TYPE_I4:
1193         case MONO_TYPE_U4:
1194                 return STACK_I4;
1195         case MONO_TYPE_I:
1196         case MONO_TYPE_U:
1197         case MONO_TYPE_PTR:
1198         case MONO_TYPE_FNPTR:
1199                 return STACK_PTR;
1200         case MONO_TYPE_CLASS:
1201         case MONO_TYPE_STRING:
1202         case MONO_TYPE_OBJECT:
1203         case MONO_TYPE_SZARRAY:
1204         case MONO_TYPE_ARRAY:
1205                 return STACK_OBJ;
1206         case MONO_TYPE_I8:
1207         case MONO_TYPE_U8:
1208                 return STACK_I8;
1209         case MONO_TYPE_R4:
1210         case MONO_TYPE_R8:
1211                 return STACK_R8;
1212         case MONO_TYPE_VALUETYPE:
1213         case MONO_TYPE_TYPEDBYREF:
1214                 return STACK_VTYPE;
1215         case MONO_TYPE_GENERICINST:
1216                 if (mono_type_generic_inst_is_valuetype (t))
1217                         return STACK_VTYPE;
1218                 else
1219                         return STACK_OBJ;
1220                 break;
1221         default:
1222                 g_assert_not_reached ();
1223         }
1224
1225         return -1;
1226 }
1227
1228 static MonoClass*
1229 array_access_to_klass (int opcode)
1230 {
1231         switch (opcode) {
1232         case CEE_LDELEM_U1:
1233                 return mono_defaults.byte_class;
1234         case CEE_LDELEM_U2:
1235                 return mono_defaults.uint16_class;
1236         case CEE_LDELEM_I:
1237         case CEE_STELEM_I:
1238                 return mono_defaults.int_class;
1239         case CEE_LDELEM_I1:
1240         case CEE_STELEM_I1:
1241                 return mono_defaults.sbyte_class;
1242         case CEE_LDELEM_I2:
1243         case CEE_STELEM_I2:
1244                 return mono_defaults.int16_class;
1245         case CEE_LDELEM_I4:
1246         case CEE_STELEM_I4:
1247                 return mono_defaults.int32_class;
1248         case CEE_LDELEM_U4:
1249                 return mono_defaults.uint32_class;
1250         case CEE_LDELEM_I8:
1251         case CEE_STELEM_I8:
1252                 return mono_defaults.int64_class;
1253         case CEE_LDELEM_R4:
1254         case CEE_STELEM_R4:
1255                 return mono_defaults.single_class;
1256         case CEE_LDELEM_R8:
1257         case CEE_STELEM_R8:
1258                 return mono_defaults.double_class;
1259         case CEE_LDELEM_REF:
1260         case CEE_STELEM_REF:
1261                 return mono_defaults.object_class;
1262         default:
1263                 g_assert_not_reached ();
1264         }
1265         return NULL;
1266 }
1267
1268 /*
1269  * We try to share variables when possible
1270  */
1271 static MonoInst *
1272 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1273 {
1274         MonoInst *res;
1275         int pos, vnum;
1276
1277         /* inlining can result in deeper stacks */
1278         if (slot >= cfg->header->max_stack)
1279                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1280
1281         pos = ins->type - 1 + slot * STACK_MAX;
1282
1283         switch (ins->type) {
1284         case STACK_I4:
1285         case STACK_I8:
1286         case STACK_R8:
1287         case STACK_PTR:
1288         case STACK_MP:
1289         case STACK_OBJ:
1290                 if ((vnum = cfg->intvars [pos]))
1291                         return cfg->varinfo [vnum];
1292                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1293                 cfg->intvars [pos] = res->inst_c0;
1294                 break;
1295         default:
1296                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1297         }
1298         return res;
1299 }
1300
1301 static void
1302 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1303 {
1304         /*
1305          * Don't use this if a generic_context is set, since that means AOT can't
1306          * look up the method using just the image+token.
1307          * table == 0 means this is a reference made from a wrapper.
1308          */
1309         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1310                 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1311                 jump_info_token->image = image;
1312                 jump_info_token->token = token;
1313                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1314         }
1315 }
1316
1317 /*
1318  * This function is called to handle items that are left on the evaluation stack
1319  * at basic block boundaries. What happens is that we save the values to local variables
1320  * and we reload them later when first entering the target basic block (with the
1321  * handle_loaded_temps () function).
1322  * A single joint point will use the same variables (stored in the array bb->out_stack or
1323  * bb->in_stack, if the basic block is before or after the joint point).
1324  *
1325  * This function needs to be called _before_ emitting the last instruction of
1326  * the bb (i.e. before emitting a branch).
1327  * If the stack merge fails at a join point, cfg->unverifiable is set.
1328  */
1329 static void
1330 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1331 {
1332         int i, bindex;
1333         MonoBasicBlock *bb = cfg->cbb;
1334         MonoBasicBlock *outb;
1335         MonoInst *inst, **locals;
1336         gboolean found;
1337
1338         if (!count)
1339                 return;
1340         if (cfg->verbose_level > 3)
1341                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1342         if (!bb->out_scount) {
1343                 bb->out_scount = count;
1344                 //printf ("bblock %d has out:", bb->block_num);
1345                 found = FALSE;
1346                 for (i = 0; i < bb->out_count; ++i) {
1347                         outb = bb->out_bb [i];
1348                         /* exception handlers are linked, but they should not be considered for stack args */
1349                         if (outb->flags & BB_EXCEPTION_HANDLER)
1350                                 continue;
1351                         //printf (" %d", outb->block_num);
1352                         if (outb->in_stack) {
1353                                 found = TRUE;
1354                                 bb->out_stack = outb->in_stack;
1355                                 break;
1356                         }
1357                 }
1358                 //printf ("\n");
1359                 if (!found) {
1360                         bb->out_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1361                         for (i = 0; i < count; ++i) {
1362                                 /*
1363                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1364                                  * stack slot and if they are of the same type.
1365                                  * This won't cause conflicts since if 'local' is used to
1366                                  * store one of the values in the in_stack of a bblock, then
1367                                  * the same variable will be used for the same outgoing stack
1368                                  * slot as well.
1369                                  * This doesn't work when inlining methods, since the bblocks
1370                                  * in the inlined methods do not inherit their in_stack from
1371                                  * the bblock they are inlined to. See bug #58863 for an
1372                                  * example.
1373                                  */
1374                                 if (cfg->inlined_method)
1375                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1376                                 else
1377                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1378                         }
1379                 }
1380         }
1381
1382         for (i = 0; i < bb->out_count; ++i) {
1383                 outb = bb->out_bb [i];
1384                 /* exception handlers are linked, but they should not be considered for stack args */
1385                 if (outb->flags & BB_EXCEPTION_HANDLER)
1386                         continue;
1387                 if (outb->in_scount) {
1388                         if (outb->in_scount != bb->out_scount) {
1389                                 cfg->unverifiable = TRUE;
1390                                 return;
1391                         }
1392                         continue; /* check they are the same locals */
1393                 }
1394                 outb->in_scount = count;
1395                 outb->in_stack = bb->out_stack;
1396         }
1397
1398         locals = bb->out_stack;
1399         cfg->cbb = bb;
1400         for (i = 0; i < count; ++i) {
1401                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1402                 inst->cil_code = sp [i]->cil_code;
1403                 sp [i] = locals [i];
1404                 if (cfg->verbose_level > 3)
1405                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1406         }
1407
1408         /*
1409          * It is possible that the out bblocks already have in_stack assigned, and
1410          * the in_stacks differ. In this case, we will store to all the different
1411          * in_stacks.
1412          */
1413
1414         found = TRUE;
1415         bindex = 0;
1416         while (found) {
1417                 /* Find a bblock which has a different in_stack */
1418                 found = FALSE;
1419                 while (bindex < bb->out_count) {
1420                         outb = bb->out_bb [bindex];
1421                         /* exception handlers are linked, but they should not be considered for stack args */
1422                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1423                                 bindex++;
1424                                 continue;
1425                         }
1426                         if (outb->in_stack != locals) {
1427                                 for (i = 0; i < count; ++i) {
1428                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1429                                         inst->cil_code = sp [i]->cil_code;
1430                                         sp [i] = locals [i];
1431                                         if (cfg->verbose_level > 3)
1432                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1433                                 }
1434                                 locals = outb->in_stack;
1435                                 found = TRUE;
1436                                 break;
1437                         }
1438                         bindex ++;
1439                 }
1440         }
1441 }
1442
1443 /* Emit code which loads interface_offsets [klass->interface_id]
1444  * The array is stored in memory before vtable.
1445 */
1446 static void
1447 mini_emit_load_intf_reg_vtable (MonoCompile *cfg, int intf_reg, int vtable_reg, MonoClass *klass)
1448 {
1449         if (cfg->compile_aot) {
1450                 int ioffset_reg = alloc_preg (cfg);
1451                 int iid_reg = alloc_preg (cfg);
1452
1453                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_ADJUSTED_IID);
1454                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ioffset_reg, iid_reg, vtable_reg);
1455                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, ioffset_reg, 0);
1456         }
1457         else {
1458                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, vtable_reg, -((klass->interface_id + 1) * SIZEOF_VOID_P));
1459         }
1460 }
1461
1462 static void
1463 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1464 {
1465         int ibitmap_reg = alloc_preg (cfg);
1466 #ifdef COMPRESSED_INTERFACE_BITMAP
1467         MonoInst *args [2];
1468         MonoInst *res, *ins;
1469         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1470         MONO_ADD_INS (cfg->cbb, ins);
1471         args [0] = ins;
1472         if (cfg->compile_aot)
1473                 EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_IID, klass);
1474         else
1475                 EMIT_NEW_ICONST (cfg, args [1], klass->interface_id);
1476         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1477         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1478 #else
1479         int ibitmap_byte_reg = alloc_preg (cfg);
1480
1481         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1482
1483         if (cfg->compile_aot) {
1484                 int iid_reg = alloc_preg (cfg);
1485                 int shifted_iid_reg = alloc_preg (cfg);
1486                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1487                 int masked_iid_reg = alloc_preg (cfg);
1488                 int iid_one_bit_reg = alloc_preg (cfg);
1489                 int iid_bit_reg = alloc_preg (cfg);
1490                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1491                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1492                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1493                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1494                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1495                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1496                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1497                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1498         } else {
1499                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1500                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1501         }
1502 #endif
1503 }
1504
1505 /*
1506  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1507  * stored in "klass_reg" implements the interface "klass".
1508  */
1509 static void
1510 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1511 {
1512         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1513 }
1514
1515 /*
1516  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1517  * stored in "vtable_reg" implements the interface "klass".
1518  */
1519 static void
1520 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1521 {
1522         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1523 }
1524
1525 /*
1526  * Emit code which checks whenever the interface id of @klass is smaller than
1527  * than the value given by max_iid_reg.
1528 */
1529 static void
1530 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1531                                                  MonoBasicBlock *false_target)
1532 {
1533         if (cfg->compile_aot) {
1534                 int iid_reg = alloc_preg (cfg);
1535                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1536                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1537         }
1538         else
1539                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1540         if (false_target)
1541                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1542         else
1543                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1544 }
1545
1546 /* Same as above, but obtains max_iid from a vtable */
1547 static void
1548 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1549                                                                  MonoBasicBlock *false_target)
1550 {
1551         int max_iid_reg = alloc_preg (cfg);
1552
1553         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, max_interface_id));
1554         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1555 }
1556
1557 /* Same as above, but obtains max_iid from a klass */
1558 static void
1559 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1560                                                                  MonoBasicBlock *false_target)
1561 {
1562         int max_iid_reg = alloc_preg (cfg);
1563
1564         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, max_interface_id));
1565         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1566 }
1567
1568 static void
1569 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1570 {
1571         int idepth_reg = alloc_preg (cfg);
1572         int stypes_reg = alloc_preg (cfg);
1573         int stype = alloc_preg (cfg);
1574
1575         mono_class_setup_supertypes (klass);
1576
1577         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1578                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1579                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1580                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1581         }
1582         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1583         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1584         if (klass_ins) {
1585                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1586         } else if (cfg->compile_aot) {
1587                 int const_reg = alloc_preg (cfg);
1588                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1589                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1590         } else {
1591                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1592         }
1593         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1594 }
1595
1596 static void
1597 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1598 {
1599         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1600 }
1601
1602 static void
1603 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1604 {
1605         int intf_reg = alloc_preg (cfg);
1606
1607         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1608         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1609         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1610         if (true_target)
1611                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1612         else
1613                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1614 }
1615
1616 /*
1617  * Variant of the above that takes a register to the class, not the vtable.
1618  */
1619 static void
1620 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1621 {
1622         int intf_bit_reg = alloc_preg (cfg);
1623
1624         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1625         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1626         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1627         if (true_target)
1628                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1629         else
1630                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1631 }
1632
1633 static inline void
1634 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1635 {
1636         if (klass_inst) {
1637                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1638         } else if (cfg->compile_aot) {
1639                 int const_reg = alloc_preg (cfg);
1640                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1641                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1642         } else {
1643                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1644         }
1645         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1646 }
1647
1648 static inline void
1649 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1650 {
1651         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1652 }
1653
1654 static inline void
1655 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1656 {
1657         if (cfg->compile_aot) {
1658                 int const_reg = alloc_preg (cfg);
1659                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1660                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1661         } else {
1662                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1663         }
1664         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1665 }
1666
1667 static void
1668 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1669
1670 static void
1671 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1672 {
1673         if (klass->rank) {
1674                 int rank_reg = alloc_preg (cfg);
1675                 int eclass_reg = alloc_preg (cfg);
1676
1677                 g_assert (!klass_inst);
1678                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, rank));
1679                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1680                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1681                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
1682                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
1683                 if (klass->cast_class == mono_defaults.object_class) {
1684                         int parent_reg = alloc_preg (cfg);
1685                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, G_STRUCT_OFFSET (MonoClass, parent));
1686                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1687                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1688                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1689                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1690                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1691                 } else if (klass->cast_class == mono_defaults.enum_class) {
1692                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1693                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1694                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1695                 } else {
1696                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1697                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1698                 }
1699
1700                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1701                         /* Check that the object is a vector too */
1702                         int bounds_reg = alloc_preg (cfg);
1703                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, G_STRUCT_OFFSET (MonoArray, bounds));
1704                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1705                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1706                 }
1707         } else {
1708                 int idepth_reg = alloc_preg (cfg);
1709                 int stypes_reg = alloc_preg (cfg);
1710                 int stype = alloc_preg (cfg);
1711
1712                 mono_class_setup_supertypes (klass);
1713
1714                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1715                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1716                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1717                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1718                 }
1719                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1720                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1721                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1722         }
1723 }
1724
1725 static void
1726 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1727 {
1728         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1729 }
1730
1731 static void
1732 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1733 {
1734         int val_reg;
1735
1736         g_assert (val == 0);
1737
1738         if (align == 0)
1739                 align = 4;
1740
1741         if ((size <= 4) && (size <= align)) {
1742                 switch (size) {
1743                 case 1:
1744                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1745                         return;
1746                 case 2:
1747                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1748                         return;
1749                 case 4:
1750                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1751                         return;
1752 #if SIZEOF_REGISTER == 8
1753                 case 8:
1754                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1755                         return;
1756 #endif
1757                 }
1758         }
1759
1760         val_reg = alloc_preg (cfg);
1761
1762         if (SIZEOF_REGISTER == 8)
1763                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1764         else
1765                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1766
1767         if (align < 4) {
1768                 /* This could be optimized further if neccesary */
1769                 while (size >= 1) {
1770                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1771                         offset += 1;
1772                         size -= 1;
1773                 }
1774                 return;
1775         }
1776
1777 #if !NO_UNALIGNED_ACCESS
1778         if (SIZEOF_REGISTER == 8) {
1779                 if (offset % 8) {
1780                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1781                         offset += 4;
1782                         size -= 4;
1783                 }
1784                 while (size >= 8) {
1785                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1786                         offset += 8;
1787                         size -= 8;
1788                 }
1789         }
1790 #endif
1791
1792         while (size >= 4) {
1793                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1794                 offset += 4;
1795                 size -= 4;
1796         }
1797         while (size >= 2) {
1798                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1799                 offset += 2;
1800                 size -= 2;
1801         }
1802         while (size >= 1) {
1803                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1804                 offset += 1;
1805                 size -= 1;
1806         }
1807 }
1808
1809 void
1810 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1811 {
1812         int cur_reg;
1813
1814         if (align == 0)
1815                 align = 4;
1816
1817         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1818         g_assert (size < 10000);
1819
1820         if (align < 4) {
1821                 /* This could be optimized further if neccesary */
1822                 while (size >= 1) {
1823                         cur_reg = alloc_preg (cfg);
1824                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1825                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1826                         doffset += 1;
1827                         soffset += 1;
1828                         size -= 1;
1829                 }
1830         }
1831
1832 #if !NO_UNALIGNED_ACCESS
1833         if (SIZEOF_REGISTER == 8) {
1834                 while (size >= 8) {
1835                         cur_reg = alloc_preg (cfg);
1836                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1837                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1838                         doffset += 8;
1839                         soffset += 8;
1840                         size -= 8;
1841                 }
1842         }
1843 #endif
1844
1845         while (size >= 4) {
1846                 cur_reg = alloc_preg (cfg);
1847                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1848                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1849                 doffset += 4;
1850                 soffset += 4;
1851                 size -= 4;
1852         }
1853         while (size >= 2) {
1854                 cur_reg = alloc_preg (cfg);
1855                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1856                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1857                 doffset += 2;
1858                 soffset += 2;
1859                 size -= 2;
1860         }
1861         while (size >= 1) {
1862                 cur_reg = alloc_preg (cfg);
1863                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1864                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1865                 doffset += 1;
1866                 soffset += 1;
1867                 size -= 1;
1868         }
1869 }
1870
1871 static int
1872 ret_type_to_call_opcode (MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
1873 {
1874         if (type->byref)
1875                 return calli? OP_CALL_REG: virt? OP_CALLVIRT: OP_CALL;
1876
1877 handle_enum:
1878         type = mini_get_basic_type_from_generic (gsctx, type);
1879         switch (type->type) {
1880         case MONO_TYPE_VOID:
1881                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALLVIRT: OP_VOIDCALL;
1882         case MONO_TYPE_I1:
1883         case MONO_TYPE_U1:
1884         case MONO_TYPE_BOOLEAN:
1885         case MONO_TYPE_I2:
1886         case MONO_TYPE_U2:
1887         case MONO_TYPE_CHAR:
1888         case MONO_TYPE_I4:
1889         case MONO_TYPE_U4:
1890                 return calli? OP_CALL_REG: virt? OP_CALLVIRT: OP_CALL;
1891         case MONO_TYPE_I:
1892         case MONO_TYPE_U:
1893         case MONO_TYPE_PTR:
1894         case MONO_TYPE_FNPTR:
1895                 return calli? OP_CALL_REG: virt? OP_CALLVIRT: OP_CALL;
1896         case MONO_TYPE_CLASS:
1897         case MONO_TYPE_STRING:
1898         case MONO_TYPE_OBJECT:
1899         case MONO_TYPE_SZARRAY:
1900         case MONO_TYPE_ARRAY:
1901                 return calli? OP_CALL_REG: virt? OP_CALLVIRT: OP_CALL;
1902         case MONO_TYPE_I8:
1903         case MONO_TYPE_U8:
1904                 return calli? OP_LCALL_REG: virt? OP_LCALLVIRT: OP_LCALL;
1905         case MONO_TYPE_R4:
1906         case MONO_TYPE_R8:
1907                 return calli? OP_FCALL_REG: virt? OP_FCALLVIRT: OP_FCALL;
1908         case MONO_TYPE_VALUETYPE:
1909                 if (type->data.klass->enumtype) {
1910                         type = mono_class_enum_basetype (type->data.klass);
1911                         goto handle_enum;
1912                 } else
1913                         return calli? OP_VCALL_REG: virt? OP_VCALLVIRT: OP_VCALL;
1914         case MONO_TYPE_TYPEDBYREF:
1915                 return calli? OP_VCALL_REG: virt? OP_VCALLVIRT: OP_VCALL;
1916         case MONO_TYPE_GENERICINST:
1917                 type = &type->data.generic_class->container_class->byval_arg;
1918                 goto handle_enum;
1919         default:
1920                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1921         }
1922         return -1;
1923 }
1924
1925 /*
1926  * target_type_is_incompatible:
1927  * @cfg: MonoCompile context
1928  *
1929  * Check that the item @arg on the evaluation stack can be stored
1930  * in the target type (can be a local, or field, etc).
1931  * The cfg arg can be used to check if we need verification or just
1932  * validity checks.
1933  *
1934  * Returns: non-0 value if arg can't be stored on a target.
1935  */
1936 static int
1937 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1938 {
1939         MonoType *simple_type;
1940         MonoClass *klass;
1941
1942         if (target->byref) {
1943                 /* FIXME: check that the pointed to types match */
1944                 if (arg->type == STACK_MP)
1945                         return arg->klass != mono_class_from_mono_type (target);
1946                 if (arg->type == STACK_PTR)
1947                         return 0;
1948                 return 1;
1949         }
1950
1951         simple_type = mono_type_get_underlying_type (target);
1952         switch (simple_type->type) {
1953         case MONO_TYPE_VOID:
1954                 return 1;
1955         case MONO_TYPE_I1:
1956         case MONO_TYPE_U1:
1957         case MONO_TYPE_BOOLEAN:
1958         case MONO_TYPE_I2:
1959         case MONO_TYPE_U2:
1960         case MONO_TYPE_CHAR:
1961         case MONO_TYPE_I4:
1962         case MONO_TYPE_U4:
1963                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1964                         return 1;
1965                 return 0;
1966         case MONO_TYPE_PTR:
1967                 /* STACK_MP is needed when setting pinned locals */
1968                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1969                         return 1;
1970                 return 0;
1971         case MONO_TYPE_I:
1972         case MONO_TYPE_U:
1973         case MONO_TYPE_FNPTR:
1974                 /*
1975                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1976                  * in native int. (#688008).
1977                  */
1978                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1979                         return 1;
1980                 return 0;
1981         case MONO_TYPE_CLASS:
1982         case MONO_TYPE_STRING:
1983         case MONO_TYPE_OBJECT:
1984         case MONO_TYPE_SZARRAY:
1985         case MONO_TYPE_ARRAY:
1986                 if (arg->type != STACK_OBJ)
1987                         return 1;
1988                 /* FIXME: check type compatibility */
1989                 return 0;
1990         case MONO_TYPE_I8:
1991         case MONO_TYPE_U8:
1992                 if (arg->type != STACK_I8)
1993                         return 1;
1994                 return 0;
1995         case MONO_TYPE_R4:
1996         case MONO_TYPE_R8:
1997                 if (arg->type != STACK_R8)
1998                         return 1;
1999                 return 0;
2000         case MONO_TYPE_VALUETYPE:
2001                 if (arg->type != STACK_VTYPE)
2002                         return 1;
2003                 klass = mono_class_from_mono_type (simple_type);
2004                 if (klass != arg->klass)
2005                         return 1;
2006                 return 0;
2007         case MONO_TYPE_TYPEDBYREF:
2008                 if (arg->type != STACK_VTYPE)
2009                         return 1;
2010                 klass = mono_class_from_mono_type (simple_type);
2011                 if (klass != arg->klass)
2012                         return 1;
2013                 return 0;
2014         case MONO_TYPE_GENERICINST:
2015                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2016                         if (arg->type != STACK_VTYPE)
2017                                 return 1;
2018                         klass = mono_class_from_mono_type (simple_type);
2019                         if (klass != arg->klass)
2020                                 return 1;
2021                         return 0;
2022                 } else {
2023                         if (arg->type != STACK_OBJ)
2024                                 return 1;
2025                         /* FIXME: check type compatibility */
2026                         return 0;
2027                 }
2028         case MONO_TYPE_VAR:
2029         case MONO_TYPE_MVAR:
2030                 g_assert (cfg->generic_sharing_context);
2031                 if (mini_type_var_is_vt (cfg, simple_type)) {
2032                         if (arg->type != STACK_VTYPE)
2033                                 return 1;
2034                 } else {
2035                         if (arg->type != STACK_OBJ)
2036                                 return 1;
2037                 }
2038                 return 0;
2039         default:
2040                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2041         }
2042         return 1;
2043 }
2044
2045 /*
2046  * Prepare arguments for passing to a function call.
2047  * Return a non-zero value if the arguments can't be passed to the given
2048  * signature.
2049  * The type checks are not yet complete and some conversions may need
2050  * casts on 32 or 64 bit architectures.
2051  *
2052  * FIXME: implement this using target_type_is_incompatible ()
2053  */
2054 static int
2055 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2056 {
2057         MonoType *simple_type;
2058         int i;
2059
2060         if (sig->hasthis) {
2061                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2062                         return 1;
2063                 args++;
2064         }
2065         for (i = 0; i < sig->param_count; ++i) {
2066                 if (sig->params [i]->byref) {
2067                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2068                                 return 1;
2069                         continue;
2070                 }
2071                 simple_type = sig->params [i];
2072                 simple_type = mini_get_basic_type_from_generic (cfg->generic_sharing_context, simple_type);
2073 handle_enum:
2074                 switch (simple_type->type) {
2075                 case MONO_TYPE_VOID:
2076                         return 1;
2077                         continue;
2078                 case MONO_TYPE_I1:
2079                 case MONO_TYPE_U1:
2080                 case MONO_TYPE_BOOLEAN:
2081                 case MONO_TYPE_I2:
2082                 case MONO_TYPE_U2:
2083                 case MONO_TYPE_CHAR:
2084                 case MONO_TYPE_I4:
2085                 case MONO_TYPE_U4:
2086                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2087                                 return 1;
2088                         continue;
2089                 case MONO_TYPE_I:
2090                 case MONO_TYPE_U:
2091                 case MONO_TYPE_PTR:
2092                 case MONO_TYPE_FNPTR:
2093                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2094                                 return 1;
2095                         continue;
2096                 case MONO_TYPE_CLASS:
2097                 case MONO_TYPE_STRING:
2098                 case MONO_TYPE_OBJECT:
2099                 case MONO_TYPE_SZARRAY:
2100                 case MONO_TYPE_ARRAY:
2101                         if (args [i]->type != STACK_OBJ)
2102                                 return 1;
2103                         continue;
2104                 case MONO_TYPE_I8:
2105                 case MONO_TYPE_U8:
2106                         if (args [i]->type != STACK_I8)
2107                                 return 1;
2108                         continue;
2109                 case MONO_TYPE_R4:
2110                 case MONO_TYPE_R8:
2111                         if (args [i]->type != STACK_R8)
2112                                 return 1;
2113                         continue;
2114                 case MONO_TYPE_VALUETYPE:
2115                         if (simple_type->data.klass->enumtype) {
2116                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2117                                 goto handle_enum;
2118                         }
2119                         if (args [i]->type != STACK_VTYPE)
2120                                 return 1;
2121                         continue;
2122                 case MONO_TYPE_TYPEDBYREF:
2123                         if (args [i]->type != STACK_VTYPE)
2124                                 return 1;
2125                         continue;
2126                 case MONO_TYPE_GENERICINST:
2127                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2128                         goto handle_enum;
2129
2130                 default:
2131                         g_error ("unknown type 0x%02x in check_call_signature",
2132                                  simple_type->type);
2133                 }
2134         }
2135         return 0;
2136 }
2137
2138 static int
2139 callvirt_to_call (int opcode)
2140 {
2141         switch (opcode) {
2142         case OP_CALLVIRT:
2143                 return OP_CALL;
2144         case OP_VOIDCALLVIRT:
2145                 return OP_VOIDCALL;
2146         case OP_FCALLVIRT:
2147                 return OP_FCALL;
2148         case OP_VCALLVIRT:
2149                 return OP_VCALL;
2150         case OP_LCALLVIRT:
2151                 return OP_LCALL;
2152         default:
2153                 g_assert_not_reached ();
2154         }
2155
2156         return -1;
2157 }
2158
2159 static int
2160 callvirt_to_call_membase (int opcode)
2161 {
2162         switch (opcode) {
2163         case OP_CALLVIRT:
2164                 return OP_CALL_MEMBASE;
2165         case OP_VOIDCALLVIRT:
2166                 return OP_VOIDCALL_MEMBASE;
2167         case OP_FCALLVIRT:
2168                 return OP_FCALL_MEMBASE;
2169         case OP_LCALLVIRT:
2170                 return OP_LCALL_MEMBASE;
2171         case OP_VCALLVIRT:
2172                 return OP_VCALL_MEMBASE;
2173         default:
2174                 g_assert_not_reached ();
2175         }
2176
2177         return -1;
2178 }
2179
2180 #ifdef MONO_ARCH_HAVE_IMT
2181 /* Either METHOD or IMT_ARG needs to be set */
2182 static void
2183 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2184 {
2185         int method_reg;
2186
2187         if (COMPILE_LLVM (cfg)) {
2188                 method_reg = alloc_preg (cfg);
2189
2190                 if (imt_arg) {
2191                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2192                 } else if (cfg->compile_aot) {
2193                         MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2194                 } else {
2195                         MonoInst *ins;
2196                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2197                         ins->inst_p0 = method;
2198                         ins->dreg = method_reg;
2199                         MONO_ADD_INS (cfg->cbb, ins);
2200                 }
2201
2202 #ifdef ENABLE_LLVM
2203                 call->imt_arg_reg = method_reg;
2204 #endif
2205 #ifdef MONO_ARCH_IMT_REG
2206         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2207 #else
2208         /* Need this to keep the IMT arg alive */
2209         mono_call_inst_add_outarg_reg (cfg, call, method_reg, 0, FALSE);
2210 #endif
2211                 return;
2212         }
2213
2214 #ifdef MONO_ARCH_IMT_REG
2215         method_reg = alloc_preg (cfg);
2216
2217         if (imt_arg) {
2218                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2219         } else if (cfg->compile_aot) {
2220                 MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2221         } else {
2222                 MonoInst *ins;
2223                 MONO_INST_NEW (cfg, ins, OP_PCONST);
2224                 ins->inst_p0 = method;
2225                 ins->dreg = method_reg;
2226                 MONO_ADD_INS (cfg->cbb, ins);
2227         }
2228
2229         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2230 #else
2231         mono_arch_emit_imt_argument (cfg, call, imt_arg);
2232 #endif
2233 }
2234 #endif
2235
2236 static MonoJumpInfo *
2237 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2238 {
2239         MonoJumpInfo *ji = mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2240
2241         ji->ip.i = ip;
2242         ji->type = type;
2243         ji->data.target = target;
2244
2245         return ji;
2246 }
2247
2248 static int
2249 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2250 {
2251         if (cfg->generic_sharing_context)
2252                 return mono_class_check_context_used (klass);
2253         else
2254                 return 0;
2255 }
2256
2257 static int
2258 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2259 {
2260         if (cfg->generic_sharing_context)
2261                 return mono_method_check_context_used (method);
2262         else
2263                 return 0;
2264 }
2265
2266 inline static MonoCallInst *
2267 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2268                                          MonoInst **args, int calli, int virtual, int tail, int rgctx, int unbox_trampoline)
2269 {
2270         MonoCallInst *call;
2271 #ifdef MONO_ARCH_SOFT_FLOAT
2272         int i;
2273 #endif
2274
2275         if (tail)
2276                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2277         else
2278                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (sig->ret, calli, virtual, cfg->generic_sharing_context));
2279
2280         call->args = args;
2281         call->signature = sig;
2282         call->rgctx_reg = rgctx;
2283
2284         type_to_eval_stack_type ((cfg), sig->ret, &call->inst);
2285
2286         if (tail) {
2287                 if (mini_type_is_vtype (cfg, sig->ret)) {
2288                         call->vret_var = cfg->vret_addr;
2289                         //g_assert_not_reached ();
2290                 }
2291         } else if (mini_type_is_vtype (cfg, sig->ret)) {
2292                 MonoInst *temp = mono_compile_create_var (cfg, sig->ret, OP_LOCAL);
2293                 MonoInst *loada;
2294
2295                 temp->backend.is_pinvoke = sig->pinvoke;
2296
2297                 /*
2298                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2299                  * address of return value to increase optimization opportunities.
2300                  * Before vtype decomposition, the dreg of the call ins itself represents the
2301                  * fact the call modifies the return value. After decomposition, the call will
2302                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2303                  * will be transformed into an LDADDR.
2304                  */
2305                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2306                 loada->dreg = alloc_preg (cfg);
2307                 loada->inst_p0 = temp;
2308                 /* We reference the call too since call->dreg could change during optimization */
2309                 loada->inst_p1 = call;
2310                 MONO_ADD_INS (cfg->cbb, loada);
2311
2312                 call->inst.dreg = temp->dreg;
2313
2314                 call->vret_var = loada;
2315         } else if (!MONO_TYPE_IS_VOID (sig->ret))
2316                 call->inst.dreg = alloc_dreg (cfg, call->inst.type);
2317
2318 #ifdef MONO_ARCH_SOFT_FLOAT
2319         if (COMPILE_SOFT_FLOAT (cfg)) {
2320                 /*
2321                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2322                  * an icall, but that cannot be done during the call sequence since it would clobber
2323                  * the call registers + the stack. So we do it before emitting the call.
2324                  */
2325                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2326                         MonoType *t;
2327                         MonoInst *in = call->args [i];
2328
2329                         if (i >= sig->hasthis)
2330                                 t = sig->params [i - sig->hasthis];
2331                         else
2332                                 t = &mono_defaults.int_class->byval_arg;
2333                         t = mono_type_get_underlying_type (t);
2334
2335                         if (!t->byref && t->type == MONO_TYPE_R4) {
2336                                 MonoInst *iargs [1];
2337                                 MonoInst *conv;
2338
2339                                 iargs [0] = in;
2340                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2341
2342                                 /* The result will be in an int vreg */
2343                                 call->args [i] = conv;
2344                         }
2345                 }
2346         }
2347 #endif
2348
2349         call->need_unbox_trampoline = unbox_trampoline;
2350
2351 #ifdef ENABLE_LLVM
2352         if (COMPILE_LLVM (cfg))
2353                 mono_llvm_emit_call (cfg, call);
2354         else
2355                 mono_arch_emit_call (cfg, call);
2356 #else
2357         mono_arch_emit_call (cfg, call);
2358 #endif
2359
2360         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2361         cfg->flags |= MONO_CFG_HAS_CALLS;
2362
2363         return call;
2364 }
2365
2366 static void
2367 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2368 {
2369 #ifdef MONO_ARCH_RGCTX_REG
2370         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2371         cfg->uses_rgctx_reg = TRUE;
2372         call->rgctx_reg = TRUE;
2373 #ifdef ENABLE_LLVM
2374         call->rgctx_arg_reg = rgctx_reg;
2375 #endif
2376 #else
2377         NOT_IMPLEMENTED;
2378 #endif
2379 }
2380
2381 inline static MonoInst*
2382 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2383 {
2384         MonoCallInst *call;
2385         int rgctx_reg = -1;
2386
2387         if (rgctx_arg) {
2388                 rgctx_reg = mono_alloc_preg (cfg);
2389                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2390         }
2391
2392         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2393
2394         call->inst.sreg1 = addr->dreg;
2395
2396         if (imt_arg)
2397                 emit_imt_argument (cfg, call, NULL, imt_arg);
2398
2399         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2400
2401         if (rgctx_arg)
2402                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2403
2404         return (MonoInst*)call;
2405 }
2406
2407 static MonoInst*
2408 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2409 static MonoInst*
2410 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2411
2412 static MonoInst*
2413 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig,
2414                                                         MonoInst **args, MonoInst *this, MonoInst *imt_arg, MonoInst *rgctx_arg)
2415 {
2416 #ifndef DISABLE_REMOTING
2417         gboolean might_be_remote = FALSE;
2418 #endif
2419         gboolean virtual = this != NULL;
2420         gboolean enable_for_aot = TRUE;
2421         int context_used;
2422         MonoCallInst *call;
2423         int rgctx_reg = 0;
2424         gboolean need_unbox_trampoline;
2425
2426         if (rgctx_arg) {
2427                 rgctx_reg = mono_alloc_preg (cfg);
2428                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2429         }
2430
2431         if (method->string_ctor) {
2432                 /* Create the real signature */
2433                 /* FIXME: Cache these */
2434                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2435                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2436
2437                 sig = ctor_sig;
2438         }
2439
2440         context_used = mini_method_check_context_used (cfg, method);
2441
2442 #ifndef DISABLE_REMOTING
2443         might_be_remote = this && sig->hasthis &&
2444                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2445                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this) || context_used);
2446
2447         if (might_be_remote && context_used) {
2448                 MonoInst *addr;
2449
2450                 g_assert (cfg->generic_sharing_context);
2451
2452                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2453
2454                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2455         }
2456 #endif
2457
2458         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2459
2460         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual, FALSE, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2461
2462 #ifndef DISABLE_REMOTING
2463         if (might_be_remote)
2464                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2465         else
2466 #endif
2467                 call->method = method;
2468         call->inst.flags |= MONO_INST_HAS_METHOD;
2469         call->inst.inst_left = this;
2470
2471         if (virtual) {
2472                 int vtable_reg, slot_reg, this_reg;
2473
2474                 this_reg = this->dreg;
2475
2476 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
2477                 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (method->name, "Invoke"))) {
2478                         MonoInst *dummy_use;
2479
2480                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2481
2482                         /* Make a call to delegate->invoke_impl */
2483                         call->inst.opcode = callvirt_to_call_membase (call->inst.opcode);
2484                         call->inst.inst_basereg = this_reg;
2485                         call->inst.inst_offset = G_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2486                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2487
2488                         /* We must emit a dummy use here because the delegate trampoline will
2489                         replace the 'this' argument with the delegate target making this activation
2490                         no longer a root for the delegate.
2491                         This is an issue for delegates that target collectible code such as dynamic
2492                         methods of GC'able assemblies.
2493
2494                         For a test case look into #667921.
2495
2496                         FIXME: a dummy use is not the best way to do it as the local register allocator
2497                         will put it on a caller save register and spil it around the call.
2498                         Ideally, we would either put it on a callee save register or only do the store part.
2499                          */
2500                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2501
2502                         return (MonoInst*)call;
2503                 }
2504 #endif
2505
2506                 if ((!cfg->compile_aot || enable_for_aot) &&
2507                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2508                          (MONO_METHOD_IS_FINAL (method) &&
2509                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2510                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2511                         /*
2512                          * the method is not virtual, we just need to ensure this is not null
2513                          * and then we can call the method directly.
2514                          */
2515 #ifndef DISABLE_REMOTING
2516                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2517                                 /*
2518                                  * The check above ensures method is not gshared, this is needed since
2519                                  * gshared methods can't have wrappers.
2520                                  */
2521                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2522                         }
2523 #endif
2524
2525                         if (!method->string_ctor)
2526                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2527
2528                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2529                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2530                         /*
2531                          * the method is virtual, but we can statically dispatch since either
2532                          * it's class or the method itself are sealed.
2533                          * But first we need to ensure it's not a null reference.
2534                          */
2535                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2536
2537                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2538                 } else {
2539                         call->inst.opcode = callvirt_to_call_membase (call->inst.opcode);
2540
2541                         vtable_reg = alloc_preg (cfg);
2542                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2543                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2544                                 slot_reg = -1;
2545 #ifdef MONO_ARCH_HAVE_IMT
2546                                 if (mono_use_imt) {
2547                                         guint32 imt_slot = mono_method_get_imt_slot (method);
2548                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2549                                         slot_reg = vtable_reg;
2550                                         call->inst.inst_offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2551                                 }
2552 #endif
2553                                 if (slot_reg == -1) {
2554                                         slot_reg = alloc_preg (cfg);
2555                                         mini_emit_load_intf_reg_vtable (cfg, slot_reg, vtable_reg, method->klass);
2556                                         call->inst.inst_offset = mono_method_get_vtable_index (method) * SIZEOF_VOID_P;
2557                                 }
2558                         } else {
2559                                 slot_reg = vtable_reg;
2560                                 call->inst.inst_offset = G_STRUCT_OFFSET (MonoVTable, vtable) +
2561                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2562 #ifdef MONO_ARCH_HAVE_IMT
2563                                 if (imt_arg) {
2564                                         g_assert (mono_method_signature (method)->generic_param_count);
2565                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2566                                 }
2567 #endif
2568                         }
2569
2570                         call->inst.sreg1 = slot_reg;
2571                         call->virtual = TRUE;
2572                 }
2573         }
2574
2575         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2576
2577         if (rgctx_arg)
2578                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2579
2580         return (MonoInst*)call;
2581 }
2582
2583 MonoInst*
2584 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this)
2585 {
2586         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), args, this, NULL, NULL);
2587 }
2588
2589 MonoInst*
2590 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2591                                            MonoInst **args)
2592 {
2593         MonoCallInst *call;
2594
2595         g_assert (sig);
2596
2597         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2598         call->fptr = func;
2599
2600         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2601
2602         return (MonoInst*)call;
2603 }
2604
2605 MonoInst*
2606 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2607 {
2608         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2609
2610         g_assert (info);
2611
2612         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2613 }
2614
2615 /*
2616  * mono_emit_abs_call:
2617  *
2618  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2619  */
2620 inline static MonoInst*
2621 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2622                                         MonoMethodSignature *sig, MonoInst **args)
2623 {
2624         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2625         MonoInst *ins;
2626
2627         /*
2628          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2629          * handle it.
2630          */
2631         if (cfg->abs_patches == NULL)
2632                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2633         g_hash_table_insert (cfg->abs_patches, ji, ji);
2634         ins = mono_emit_native_call (cfg, ji, sig, args);
2635         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2636         return ins;
2637 }
2638
2639 static MonoInst*
2640 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2641 {
2642         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2643                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2644                         int widen_op = -1;
2645
2646                         /*
2647                          * Native code might return non register sized integers
2648                          * without initializing the upper bits.
2649                          */
2650                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2651                         case OP_LOADI1_MEMBASE:
2652                                 widen_op = OP_ICONV_TO_I1;
2653                                 break;
2654                         case OP_LOADU1_MEMBASE:
2655                                 widen_op = OP_ICONV_TO_U1;
2656                                 break;
2657                         case OP_LOADI2_MEMBASE:
2658                                 widen_op = OP_ICONV_TO_I2;
2659                                 break;
2660                         case OP_LOADU2_MEMBASE:
2661                                 widen_op = OP_ICONV_TO_U2;
2662                                 break;
2663                         default:
2664                                 break;
2665                         }
2666
2667                         if (widen_op != -1) {
2668                                 int dreg = alloc_preg (cfg);
2669                                 MonoInst *widen;
2670
2671                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2672                                 widen->type = ins->type;
2673                                 ins = widen;
2674                         }
2675                 }
2676         }
2677
2678         return ins;
2679 }
2680
2681 static MonoMethod*
2682 get_memcpy_method (void)
2683 {
2684         static MonoMethod *memcpy_method = NULL;
2685         if (!memcpy_method) {
2686                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2687                 if (!memcpy_method)
2688                         g_error ("Old corlib found. Install a new one");
2689         }
2690         return memcpy_method;
2691 }
2692
2693 static void
2694 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2695 {
2696         MonoClassField *field;
2697         gpointer iter = NULL;
2698
2699         while ((field = mono_class_get_fields (klass, &iter))) {
2700                 int foffset;
2701
2702                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2703                         continue;
2704                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2705                 if (mini_type_is_reference (cfg, mono_field_get_type (field))) {
2706                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2707                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2708                 } else {
2709                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2710                         if (field_class->has_references)
2711                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2712                 }
2713         }
2714 }
2715
2716 static void
2717 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value, int value_reg)
2718 {
2719         int card_table_shift_bits;
2720         gpointer card_table_mask;
2721         guint8 *card_table;
2722         MonoInst *dummy_use;
2723         int nursery_shift_bits;
2724         size_t nursery_size;
2725         gboolean has_card_table_wb = FALSE;
2726
2727         if (!cfg->gen_write_barriers)
2728                 return;
2729
2730         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2731
2732         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2733
2734 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
2735         has_card_table_wb = TRUE;
2736 #endif
2737
2738         if (has_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0) {
2739                 MonoInst *wbarrier;
2740
2741                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2742                 wbarrier->sreg1 = ptr->dreg;
2743                 if (value)
2744                         wbarrier->sreg2 = value->dreg;
2745                 else
2746                         wbarrier->sreg2 = value_reg;
2747                 MONO_ADD_INS (cfg->cbb, wbarrier);
2748         } else if (card_table) {
2749                 int offset_reg = alloc_preg (cfg);
2750                 int card_reg  = alloc_preg (cfg);
2751                 MonoInst *ins;
2752
2753                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2754                 if (card_table_mask)
2755                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2756
2757                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2758                  * IMM's larger than 32bits.
2759                  */
2760                 if (cfg->compile_aot) {
2761                         MONO_EMIT_NEW_AOTCONST (cfg, card_reg, NULL, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR);
2762                 } else {
2763                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2764                         ins->inst_p0 = card_table;
2765                         ins->dreg = card_reg;
2766                         MONO_ADD_INS (cfg->cbb, ins);
2767                 }
2768
2769                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2770                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2771         } else {
2772                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2773                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2774         }
2775
2776         if (value) {
2777                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2778         } else {
2779                 MONO_INST_NEW (cfg, dummy_use, OP_DUMMY_USE);
2780                 dummy_use->sreg1 = value_reg;
2781                 MONO_ADD_INS (cfg->cbb, dummy_use);
2782         }
2783 }
2784
2785 static gboolean
2786 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
2787 {
2788         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
2789         unsigned need_wb = 0;
2790
2791         if (align == 0)
2792                 align = 4;
2793
2794         /*types with references can't have alignment smaller than sizeof(void*) */
2795         if (align < SIZEOF_VOID_P)
2796                 return FALSE;
2797
2798         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
2799         if (size > 32 * SIZEOF_VOID_P)
2800                 return FALSE;
2801
2802         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
2803
2804         /* We don't unroll more than 5 stores to avoid code bloat. */
2805         if (size > 5 * SIZEOF_VOID_P) {
2806                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
2807                 size += (SIZEOF_VOID_P - 1);
2808                 size &= ~(SIZEOF_VOID_P - 1);
2809
2810                 EMIT_NEW_ICONST (cfg, iargs [2], size);
2811                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
2812                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
2813                 return TRUE;
2814         }
2815
2816         destreg = iargs [0]->dreg;
2817         srcreg = iargs [1]->dreg;
2818         offset = 0;
2819
2820         dest_ptr_reg = alloc_preg (cfg);
2821         tmp_reg = alloc_preg (cfg);
2822
2823         /*tmp = dreg*/
2824         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
2825
2826         while (size >= SIZEOF_VOID_P) {
2827                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOAD_MEMBASE, tmp_reg, srcreg, offset);
2828                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
2829
2830                 if (need_wb & 0x1)
2831                         emit_write_barrier (cfg, iargs [0], NULL, tmp_reg);
2832
2833                 offset += SIZEOF_VOID_P;
2834                 size -= SIZEOF_VOID_P;
2835                 need_wb >>= 1;
2836
2837                 /*tmp += sizeof (void*)*/
2838                 if (size >= SIZEOF_VOID_P) {
2839                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
2840                         MONO_ADD_INS (cfg->cbb, iargs [0]);
2841                 }
2842         }
2843
2844         /* Those cannot be references since size < sizeof (void*) */
2845         while (size >= 4) {
2846                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
2847                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
2848                 offset += 4;
2849                 size -= 4;
2850         }
2851
2852         while (size >= 2) {
2853                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
2854                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
2855                 offset += 2;
2856                 size -= 2;
2857         }
2858
2859         while (size >= 1) {
2860                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
2861                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
2862                 offset += 1;
2863                 size -= 1;
2864         }
2865
2866         return TRUE;
2867 }
2868
2869 /*
2870  * Emit code to copy a valuetype of type @klass whose address is stored in
2871  * @src->dreg to memory whose address is stored at @dest->dreg.
2872  */
2873 void
2874 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2875 {
2876         MonoInst *iargs [4];
2877         int context_used, n;
2878         guint32 align = 0;
2879         MonoMethod *memcpy_method;
2880         MonoInst *size_ins = NULL;
2881
2882         g_assert (klass);
2883         /*
2884          * This check breaks with spilled vars... need to handle it during verification anyway.
2885          * g_assert (klass && klass == src->klass && klass == dest->klass);
2886          */
2887
2888         if (mini_is_gsharedvt_klass (cfg, klass)) {
2889                 g_assert (!native);
2890                 context_used = mini_class_check_context_used (cfg, klass);
2891                 size_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2892         }
2893
2894         if (native)
2895                 n = mono_class_native_size (klass, &align);
2896         else
2897                 n = mono_class_value_size (klass, &align);
2898
2899         /* if native is true there should be no references in the struct */
2900         if (cfg->gen_write_barriers && klass->has_references && !native) {
2901                 /* Avoid barriers when storing to the stack */
2902                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
2903                           (dest->opcode == OP_LDADDR))) {
2904                         int context_used;
2905
2906                         iargs [0] = dest;
2907                         iargs [1] = src;
2908
2909                         context_used = mini_class_check_context_used (cfg, klass);
2910
2911                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
2912                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
2913                                 return;
2914                         } else if (context_used) {
2915                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
2916                         }  else {
2917                                 if (cfg->compile_aot) {
2918                                         EMIT_NEW_CLASSCONST (cfg, iargs [2], klass);
2919                                 } else {
2920                                         EMIT_NEW_PCONST (cfg, iargs [2], klass);
2921                                         mono_class_compute_gc_descriptor (klass);
2922                                 }
2923                         }
2924
2925                         mono_emit_jit_icall (cfg, mono_value_copy, iargs);
2926                         return;
2927                 }
2928         }
2929
2930         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 5) {
2931                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
2932                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
2933         } else {
2934                 iargs [0] = dest;
2935                 iargs [1] = src;
2936                 if (size_ins)
2937                         iargs [2] = size_ins;
2938                 else
2939                         EMIT_NEW_ICONST (cfg, iargs [2], n);
2940
2941                 memcpy_method = get_memcpy_method ();
2942                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
2943         }
2944 }
2945
2946 static MonoMethod*
2947 get_memset_method (void)
2948 {
2949         static MonoMethod *memset_method = NULL;
2950         if (!memset_method) {
2951                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2952                 if (!memset_method)
2953                         g_error ("Old corlib found. Install a new one");
2954         }
2955         return memset_method;
2956 }
2957
2958 void
2959 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2960 {
2961         MonoInst *iargs [3];
2962         int n, context_used;
2963         guint32 align;
2964         MonoMethod *memset_method;
2965         MonoInst *size_ins = NULL;
2966
2967         /* FIXME: Optimize this for the case when dest is an LDADDR */
2968
2969         mono_class_init (klass);
2970         if (mini_is_gsharedvt_klass (cfg, klass)) {
2971                 context_used = mini_class_check_context_used (cfg, klass);
2972                 size_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2973                 n = -1;
2974         } else {
2975                 n = mono_class_value_size (klass, &align);
2976         }
2977
2978         if (!size_ins && n <= sizeof (gpointer) * 5) {
2979                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2980         }
2981         else {
2982                 memset_method = get_memset_method ();
2983                 iargs [0] = dest;
2984                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2985                 if (size_ins)
2986                         iargs [2] = size_ins;
2987                 else
2988                         EMIT_NEW_ICONST (cfg, iargs [2], n);
2989                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2990         }
2991 }
2992
2993 static MonoInst*
2994 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2995 {
2996         MonoInst *this = NULL;
2997
2998         g_assert (cfg->generic_sharing_context);
2999
3000         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3001                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3002                         !method->klass->valuetype)
3003                 EMIT_NEW_ARGLOAD (cfg, this, 0);
3004
3005         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3006                 MonoInst *mrgctx_loc, *mrgctx_var;
3007
3008                 g_assert (!this);
3009                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3010
3011                 mrgctx_loc = mono_get_vtable_var (cfg);
3012                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3013
3014                 return mrgctx_var;
3015         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3016                 MonoInst *vtable_loc, *vtable_var;
3017
3018                 g_assert (!this);
3019
3020                 vtable_loc = mono_get_vtable_var (cfg);
3021                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3022
3023                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3024                         MonoInst *mrgctx_var = vtable_var;
3025                         int vtable_reg;
3026
3027                         vtable_reg = alloc_preg (cfg);
3028                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, G_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3029                         vtable_var->type = STACK_PTR;
3030                 }
3031
3032                 return vtable_var;
3033         } else {
3034                 MonoInst *ins;
3035                 int vtable_reg;
3036
3037                 vtable_reg = alloc_preg (cfg);
3038                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3039                 return ins;
3040         }
3041 }
3042
3043 static MonoJumpInfoRgctxEntry *
3044 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3045 {
3046         MonoJumpInfoRgctxEntry *res = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3047         res->method = method;
3048         res->in_mrgctx = in_mrgctx;
3049         res->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3050         res->data->type = patch_type;
3051         res->data->data.target = patch_data;
3052         res->info_type = info_type;
3053
3054         return res;
3055 }
3056
3057 static inline MonoInst*
3058 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3059 {
3060         return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3061 }
3062
3063 static MonoInst*
3064 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3065                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3066 {
3067         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);
3068         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3069
3070         return emit_rgctx_fetch (cfg, rgctx, entry);
3071 }
3072
3073 static MonoInst*
3074 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3075                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3076 {
3077         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);
3078         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3079
3080         return emit_rgctx_fetch (cfg, rgctx, entry);
3081 }
3082
3083 static MonoInst*
3084 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3085                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3086 {
3087         MonoJumpInfoGSharedVtCall *call_info;
3088         MonoJumpInfoRgctxEntry *entry;
3089         MonoInst *rgctx;
3090
3091         call_info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3092         call_info->sig = sig;
3093         call_info->method = cmethod;
3094
3095         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);
3096         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3097
3098         return emit_rgctx_fetch (cfg, rgctx, entry);
3099 }
3100
3101 /*
3102  * emit_get_rgctx_method:
3103  *
3104  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3105  * normal constants, else emit a load from the rgctx.
3106  */
3107 static MonoInst*
3108 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3109                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3110 {
3111         if (!context_used) {
3112                 MonoInst *ins;
3113
3114                 switch (rgctx_type) {
3115                 case MONO_RGCTX_INFO_METHOD:
3116                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3117                         return ins;
3118                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3119                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3120                         return ins;
3121                 default:
3122                         g_assert_not_reached ();
3123                 }
3124         } else {
3125                 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);
3126                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3127
3128                 return emit_rgctx_fetch (cfg, rgctx, entry);
3129         }
3130 }
3131
3132 static MonoInst*
3133 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3134                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3135 {
3136         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);
3137         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3138
3139         return emit_rgctx_fetch (cfg, rgctx, entry);
3140 }
3141
3142 /*
3143  * On return the caller must check @klass for load errors.
3144  */
3145 static void
3146 emit_generic_class_init (MonoCompile *cfg, MonoClass *klass)
3147 {
3148         MonoInst *vtable_arg;
3149         MonoCallInst *call;
3150         int context_used;
3151
3152         context_used = mini_class_check_context_used (cfg, klass);
3153
3154         if (context_used) {
3155                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3156                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3157         } else {
3158                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3159
3160                 if (!vtable)
3161                         return;
3162                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3163         }
3164
3165         if (COMPILE_LLVM (cfg))
3166                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline_llvm, &vtable_arg);
3167         else
3168                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
3169 #ifdef MONO_ARCH_VTABLE_REG
3170         mono_call_inst_add_outarg_reg (cfg, call, vtable_arg->dreg, MONO_ARCH_VTABLE_REG, FALSE);
3171         cfg->uses_vtable_reg = TRUE;
3172 #else
3173         NOT_IMPLEMENTED;
3174 #endif
3175 }
3176
3177 static void
3178 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc)
3179 {
3180         MonoInst *ins;
3181
3182         if (cfg->gen_seq_points && cfg->method == method) {
3183                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3184                 MONO_ADD_INS (cfg->cbb, ins);
3185         }
3186 }
3187
3188 static void
3189 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg)
3190 {
3191         if (mini_get_debug_options ()->better_cast_details) {
3192                 int to_klass_reg = alloc_preg (cfg);
3193                 int vtable_reg = alloc_preg (cfg);
3194                 int klass_reg = alloc_preg (cfg);
3195                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3196
3197                 if (!tls_get) {
3198                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3199                         exit (1);
3200                 }
3201
3202                 MONO_ADD_INS (cfg->cbb, tls_get);
3203                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3204                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3205
3206                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3207                 MONO_EMIT_NEW_PCONST (cfg, to_klass_reg, klass);
3208                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3209         }
3210 }
3211
3212 static void
3213 reset_cast_details (MonoCompile *cfg)
3214 {
3215         /* Reset the variables holding the cast details */
3216         if (mini_get_debug_options ()->better_cast_details) {
3217                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3218
3219                 MONO_ADD_INS (cfg->cbb, tls_get);
3220                 /* It is enough to reset the from field */
3221                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3222         }
3223 }
3224
3225 /*
3226  * On return the caller must check @array_class for load errors
3227  */
3228 static void
3229 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3230 {
3231         int vtable_reg = alloc_preg (cfg);
3232         int context_used;
3233
3234         context_used = mini_class_check_context_used (cfg, array_class);
3235
3236         save_cast_details (cfg, array_class, obj->dreg);
3237
3238         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3239
3240         if (cfg->opt & MONO_OPT_SHARED) {
3241                 int class_reg = alloc_preg (cfg);
3242                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3243                 if (cfg->compile_aot) {
3244                         int klass_reg = alloc_preg (cfg);
3245                         MONO_EMIT_NEW_CLASSCONST (cfg, klass_reg, array_class);
3246                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, klass_reg);
3247                 } else {
3248                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, class_reg, array_class);
3249                 }
3250         } else if (context_used) {
3251                 MonoInst *vtable_ins;
3252
3253                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3254                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3255         } else {
3256                 if (cfg->compile_aot) {
3257                         int vt_reg;
3258                         MonoVTable *vtable;
3259
3260                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3261                                 return;
3262                         vt_reg = alloc_preg (cfg);
3263                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3264                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3265                 } else {
3266                         MonoVTable *vtable;
3267                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3268                                 return;
3269                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3270                 }
3271         }
3272
3273         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3274
3275         reset_cast_details (cfg);
3276 }
3277
3278 /**
3279  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3280  * generic code is generated.
3281  */
3282 static MonoInst*
3283 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3284 {
3285         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3286
3287         if (context_used) {
3288                 MonoInst *rgctx, *addr;
3289
3290                 /* FIXME: What if the class is shared?  We might not
3291                    have to get the address of the method from the
3292                    RGCTX. */
3293                 addr = emit_get_rgctx_method (cfg, context_used, method,
3294                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3295
3296                 rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3297
3298                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3299         } else {
3300                 return mono_emit_method_call (cfg, method, &val, NULL);
3301         }
3302 }
3303
3304 static MonoInst*
3305 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3306 {
3307         MonoInst *add;
3308         int obj_reg;
3309         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3310         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3311         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3312         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3313
3314         obj_reg = sp [0]->dreg;
3315         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3316         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3317
3318         /* FIXME: generics */
3319         g_assert (klass->rank == 0);
3320
3321         // Check rank == 0
3322         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3323         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3324
3325         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3326         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, element_class));
3327
3328         if (context_used) {
3329                 MonoInst *element_class;
3330
3331                 /* This assertion is from the unboxcast insn */
3332                 g_assert (klass->rank == 0);
3333
3334                 element_class = emit_get_rgctx_klass (cfg, context_used,
3335                                 klass->element_class, MONO_RGCTX_INFO_KLASS);
3336
3337                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3338                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3339         } else {
3340                 save_cast_details (cfg, klass->element_class, obj_reg);
3341                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3342                 reset_cast_details (cfg);
3343         }
3344
3345         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3346         MONO_ADD_INS (cfg->cbb, add);
3347         add->type = STACK_MP;
3348         add->klass = klass;
3349
3350         return add;
3351 }
3352
3353 /*
3354  * Returns NULL and set the cfg exception on error.
3355  */
3356 static MonoInst*
3357 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3358 {
3359         MonoInst *iargs [2];
3360         void *alloc_ftn;
3361
3362         if (context_used) {
3363                 MonoInst *data;
3364                 int rgctx_info;
3365                 MonoInst *iargs [2];
3366
3367                 /*
3368                   FIXME: we cannot get managed_alloc here because we can't get
3369                   the class's vtable (because it's not a closed class)
3370
3371                   MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3372                   MonoMethod *managed_alloc = mono_gc_get_managed_allocator (vtable, for_box);
3373                 */
3374
3375                 if (cfg->opt & MONO_OPT_SHARED)
3376                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3377                 else
3378                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3379                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3380
3381                 if (cfg->opt & MONO_OPT_SHARED) {
3382                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3383                         iargs [1] = data;
3384                         alloc_ftn = mono_object_new;
3385                 } else {
3386                         iargs [0] = data;
3387                         alloc_ftn = mono_object_new_specific;
3388                 }
3389
3390                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3391         }
3392
3393         if (cfg->opt & MONO_OPT_SHARED) {
3394                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3395                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3396
3397                 alloc_ftn = mono_object_new;
3398         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
3399                 /* This happens often in argument checking code, eg. throw new FooException... */
3400                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3401                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3402                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3403         } else {
3404                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3405                 MonoMethod *managed_alloc = NULL;
3406                 gboolean pass_lw;
3407
3408                 if (!vtable) {
3409                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3410                         cfg->exception_ptr = klass;
3411                         return NULL;
3412                 }
3413
3414 #ifndef MONO_CROSS_COMPILE
3415                 managed_alloc = mono_gc_get_managed_allocator (vtable, for_box);
3416 #endif
3417
3418                 if (managed_alloc) {
3419                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3420                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3421                 }
3422                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3423                 if (pass_lw) {
3424                         guint32 lw = vtable->klass->instance_size;
3425                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3426                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3427                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3428                 }
3429                 else {
3430                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3431                 }
3432         }
3433
3434         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3435 }
3436
3437 /*
3438  * Returns NULL and set the cfg exception on error.
3439  */
3440 static MonoInst*
3441 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3442 {
3443         MonoInst *alloc, *ins;
3444
3445         if (mono_class_is_nullable (klass)) {
3446                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3447
3448                 if (context_used) {
3449                         /* FIXME: What if the class is shared?  We might not
3450                            have to get the method address from the RGCTX. */
3451                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3452                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3453                         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3454
3455                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3456                 } else {
3457                         return mono_emit_method_call (cfg, method, &val, NULL);
3458                 }
3459         }
3460
3461         if (mini_is_gsharedvt_klass (cfg, klass)) {
3462                 MonoBasicBlock *is_ref_bb, *end_bb;
3463                 MonoInst *res, *is_ref, *src_var, *addr;
3464                 int addr_reg, dreg;
3465
3466                 dreg = alloc_ireg (cfg);
3467
3468                 NEW_BBLOCK (cfg, is_ref_bb);
3469                 NEW_BBLOCK (cfg, end_bb);
3470                 is_ref = emit_get_rgctx_klass (cfg, context_used, klass,
3471                                                                            MONO_RGCTX_INFO_CLASS_IS_REF);
3472                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3473                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3474
3475                 /* Non-ref case */
3476                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3477                 if (!alloc)
3478                         return NULL;
3479                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3480                 ins->opcode = OP_STOREV_MEMBASE;
3481
3482                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3483                 res->type = STACK_OBJ;
3484                 res->klass = klass;
3485                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3486
3487                 /* Ref case */
3488                 MONO_START_BB (cfg, is_ref_bb);
3489                 addr_reg = alloc_ireg (cfg);
3490
3491                 /* val is a vtype, so has to load the value manually */
3492                 src_var = get_vreg_to_inst (cfg, val->dreg);
3493                 if (!src_var)
3494                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3495                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3496                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3497                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3498
3499                 MONO_START_BB (cfg, end_bb);
3500
3501                 return res;
3502         } else {
3503                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3504                 if (!alloc)
3505                         return NULL;
3506
3507                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3508                 return alloc;
3509         }
3510 }
3511
3512
3513 static gboolean
3514 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
3515 {
3516         int i;
3517         MonoGenericContainer *container;
3518         MonoGenericInst *ginst;
3519
3520         if (klass->generic_class) {
3521                 container = klass->generic_class->container_class->generic_container;
3522                 ginst = klass->generic_class->context.class_inst;
3523         } else if (klass->generic_container && context_used) {
3524                 container = klass->generic_container;
3525                 ginst = container->context.class_inst;
3526         } else {
3527                 return FALSE;
3528         }
3529
3530         for (i = 0; i < container->type_argc; ++i) {
3531                 MonoType *type;
3532                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
3533                         continue;
3534                 type = ginst->type_argv [i];
3535                 if (mini_type_is_reference (cfg, type))
3536                         return TRUE;
3537         }
3538         return FALSE;
3539 }
3540
3541 // FIXME: This doesn't work yet (class libs tests fail?)
3542 #define is_complex_isinst(klass) (TRUE || (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)
3543
3544 /*
3545  * Returns NULL and set the cfg exception on error.
3546  */
3547 static MonoInst*
3548 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
3549 {
3550         MonoBasicBlock *is_null_bb;
3551         int obj_reg = src->dreg;
3552         int vtable_reg = alloc_preg (cfg);
3553         MonoInst *klass_inst = NULL;
3554
3555         if (context_used) {
3556                 MonoInst *args [3];
3557
3558                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
3559                         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
3560                         MonoInst *cache_ins;
3561
3562                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
3563
3564                         /* obj */
3565                         args [0] = src;
3566
3567                         /* klass - it's the second element of the cache entry*/
3568                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3569
3570                         /* cache */
3571                         args [2] = cache_ins;
3572
3573                         return mono_emit_method_call (cfg, mono_castclass, args, NULL);
3574                 }
3575
3576                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3577
3578                 if (is_complex_isinst (klass)) {
3579                         /* Complex case, handle by an icall */
3580
3581                         /* obj */
3582                         args [0] = src;
3583
3584                         /* klass */
3585                         args [1] = klass_inst;
3586
3587                         return mono_emit_jit_icall (cfg, mono_object_castclass, args);
3588                 } else {
3589                         /* Simple case, handled by the code below */
3590                 }
3591         }
3592
3593         NEW_BBLOCK (cfg, is_null_bb);
3594
3595         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3596         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3597
3598         save_cast_details (cfg, klass, obj_reg);
3599
3600         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3601                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3602                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
3603         } else {
3604                 int klass_reg = alloc_preg (cfg);
3605
3606                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3607
3608                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3609                         /* the remoting code is broken, access the class for now */
3610                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3611                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
3612                                 if (!vt) {
3613                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3614                                         cfg->exception_ptr = klass;
3615                                         return NULL;
3616                                 }
3617                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
3618                         } else {
3619                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3620                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
3621                         }
3622                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3623                 } else {
3624                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3625                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
3626                 }
3627         }
3628
3629         MONO_START_BB (cfg, is_null_bb);
3630
3631         reset_cast_details (cfg);
3632
3633         return src;
3634 }
3635
3636 /*
3637  * Returns NULL and set the cfg exception on error.
3638  */
3639 static MonoInst*
3640 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
3641 {
3642         MonoInst *ins;
3643         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
3644         int obj_reg = src->dreg;
3645         int vtable_reg = alloc_preg (cfg);
3646         int res_reg = alloc_ireg_ref (cfg);
3647         MonoInst *klass_inst = NULL;
3648
3649         if (context_used) {
3650                 MonoInst *args [3];
3651
3652                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
3653                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
3654                         MonoInst *cache_ins;
3655
3656                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
3657
3658                         /* obj */
3659                         args [0] = src;
3660
3661                         /* klass - it's the second element of the cache entry*/
3662                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3663
3664                         /* cache */
3665                         args [2] = cache_ins;
3666
3667                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
3668                 }
3669
3670                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3671
3672                 if (is_complex_isinst (klass)) {
3673                         /* Complex case, handle by an icall */
3674
3675                         /* obj */
3676                         args [0] = src;
3677
3678                         /* klass */
3679                         args [1] = klass_inst;
3680
3681                         return mono_emit_jit_icall (cfg, mono_object_isinst, args);
3682                 } else {
3683                         /* Simple case, the code below can handle it */
3684                 }
3685         }
3686
3687         NEW_BBLOCK (cfg, is_null_bb);
3688         NEW_BBLOCK (cfg, false_bb);
3689         NEW_BBLOCK (cfg, end_bb);
3690
3691         /* Do the assignment at the beginning, so the other assignment can be if converted */
3692         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
3693         ins->type = STACK_OBJ;
3694         ins->klass = klass;
3695
3696         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3697         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
3698
3699         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3700
3701         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3702                 g_assert (!context_used);
3703                 /* the is_null_bb target simply copies the input register to the output */
3704                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
3705         } else {
3706                 int klass_reg = alloc_preg (cfg);
3707
3708                 if (klass->rank) {
3709                         int rank_reg = alloc_preg (cfg);
3710                         int eclass_reg = alloc_preg (cfg);
3711
3712                         g_assert (!context_used);
3713                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3714                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
3715                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
3716                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3717                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
3718                         if (klass->cast_class == mono_defaults.object_class) {
3719                                 int parent_reg = alloc_preg (cfg);
3720                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, G_STRUCT_OFFSET (MonoClass, parent));
3721                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
3722                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3723                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3724                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
3725                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
3726                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3727                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3728                         } else if (klass->cast_class == mono_defaults.enum_class) {
3729                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3730                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3731                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
3732                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
3733                         } else {
3734                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
3735                                         /* Check that the object is a vector too */
3736                                         int bounds_reg = alloc_preg (cfg);
3737                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, G_STRUCT_OFFSET (MonoArray, bounds));
3738                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
3739                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
3740                                 }
3741
3742                                 /* the is_null_bb target simply copies the input register to the output */
3743                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
3744                         }
3745                 } else if (mono_class_is_nullable (klass)) {
3746                         g_assert (!context_used);
3747                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3748                         /* the is_null_bb target simply copies the input register to the output */
3749                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
3750                 } else {
3751                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3752                                 g_assert (!context_used);
3753                                 /* the remoting code is broken, access the class for now */
3754                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3755                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
3756                                         if (!vt) {
3757                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3758                                                 cfg->exception_ptr = klass;
3759                                                 return NULL;
3760                                         }
3761                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
3762                                 } else {
3763                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3764                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
3765                                 }
3766                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
3767                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
3768                         } else {
3769                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3770                                 /* the is_null_bb target simply copies the input register to the output */
3771                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
3772                         }
3773                 }
3774         }
3775
3776         MONO_START_BB (cfg, false_bb);
3777
3778         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
3779         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3780
3781         MONO_START_BB (cfg, is_null_bb);
3782
3783         MONO_START_BB (cfg, end_bb);
3784
3785         return ins;
3786 }
3787
3788 static MonoInst*
3789 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
3790 {
3791         /* This opcode takes as input an object reference and a class, and returns:
3792         0) if the object is an instance of the class,
3793         1) if the object is not instance of the class,
3794         2) if the object is a proxy whose type cannot be determined */
3795
3796         MonoInst *ins;
3797 #ifndef DISABLE_REMOTING
3798         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
3799 #else
3800         MonoBasicBlock *true_bb, *false_bb, *end_bb;
3801 #endif
3802         int obj_reg = src->dreg;
3803         int dreg = alloc_ireg (cfg);
3804         int tmp_reg;
3805 #ifndef DISABLE_REMOTING
3806         int klass_reg = alloc_preg (cfg);
3807 #endif
3808
3809         NEW_BBLOCK (cfg, true_bb);
3810         NEW_BBLOCK (cfg, false_bb);
3811         NEW_BBLOCK (cfg, end_bb);
3812 #ifndef DISABLE_REMOTING
3813         NEW_BBLOCK (cfg, false2_bb);
3814         NEW_BBLOCK (cfg, no_proxy_bb);
3815 #endif
3816
3817         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3818         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
3819
3820         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3821 #ifndef DISABLE_REMOTING
3822                 NEW_BBLOCK (cfg, interface_fail_bb);
3823 #endif
3824
3825                 tmp_reg = alloc_preg (cfg);
3826                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3827 #ifndef DISABLE_REMOTING
3828                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
3829                 MONO_START_BB (cfg, interface_fail_bb);
3830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3831
3832                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
3833
3834                 tmp_reg = alloc_preg (cfg);
3835                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3836                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
3837                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
3838 #else
3839                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
3840 #endif
3841         } else {
3842 #ifndef DISABLE_REMOTING
3843                 tmp_reg = alloc_preg (cfg);
3844                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3845                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3846
3847                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3848                 tmp_reg = alloc_preg (cfg);
3849                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3850                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3851
3852                 tmp_reg = alloc_preg (cfg);
3853                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3854                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
3855                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
3856
3857                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
3858                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
3859
3860                 MONO_START_BB (cfg, no_proxy_bb);
3861
3862                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
3863 #else
3864                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
3865 #endif
3866         }
3867
3868         MONO_START_BB (cfg, false_bb);
3869
3870         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
3871         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3872
3873 #ifndef DISABLE_REMOTING
3874         MONO_START_BB (cfg, false2_bb);
3875
3876         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
3877         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3878 #endif
3879
3880         MONO_START_BB (cfg, true_bb);
3881
3882         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
3883
3884         MONO_START_BB (cfg, end_bb);
3885
3886         /* FIXME: */
3887         MONO_INST_NEW (cfg, ins, OP_ICONST);
3888         ins->dreg = dreg;
3889         ins->type = STACK_I4;
3890
3891         return ins;
3892 }
3893
3894 static MonoInst*
3895 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
3896 {
3897         /* This opcode takes as input an object reference and a class, and returns:
3898         0) if the object is an instance of the class,
3899         1) if the object is a proxy whose type cannot be determined
3900         an InvalidCastException exception is thrown otherwhise*/
3901
3902         MonoInst *ins;
3903 #ifndef DISABLE_REMOTING
3904         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
3905 #else
3906         MonoBasicBlock *ok_result_bb;
3907 #endif
3908         int obj_reg = src->dreg;
3909         int dreg = alloc_ireg (cfg);
3910         int tmp_reg = alloc_preg (cfg);
3911
3912 #ifndef DISABLE_REMOTING
3913         int klass_reg = alloc_preg (cfg);
3914         NEW_BBLOCK (cfg, end_bb);
3915 #endif
3916
3917         NEW_BBLOCK (cfg, ok_result_bb);
3918
3919         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3920         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
3921
3922         save_cast_details (cfg, klass, obj_reg);
3923
3924         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3925 #ifndef DISABLE_REMOTING
3926                 NEW_BBLOCK (cfg, interface_fail_bb);
3927
3928                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3929                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
3930                 MONO_START_BB (cfg, interface_fail_bb);
3931                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3932
3933                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
3934
3935                 tmp_reg = alloc_preg (cfg);
3936                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3937                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
3938                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
3939
3940                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
3941                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3942 #else
3943                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3944                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
3945                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
3946 #endif
3947         } else {
3948 #ifndef DISABLE_REMOTING
3949                 NEW_BBLOCK (cfg, no_proxy_bb);
3950
3951                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3952                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3953                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3954
3955                 tmp_reg = alloc_preg (cfg);
3956                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3957                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3958
3959                 tmp_reg = alloc_preg (cfg);
3960                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3961                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
3962                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
3963
3964                 NEW_BBLOCK (cfg, fail_1_bb);
3965
3966                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
3967
3968                 MONO_START_BB (cfg, fail_1_bb);
3969
3970                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
3971                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3972
3973                 MONO_START_BB (cfg, no_proxy_bb);
3974
3975                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
3976 #else
3977                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
3978 #endif
3979         }
3980
3981         MONO_START_BB (cfg, ok_result_bb);
3982
3983         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
3984
3985 #ifndef DISABLE_REMOTING
3986         MONO_START_BB (cfg, end_bb);
3987 #endif
3988
3989         /* FIXME: */
3990         MONO_INST_NEW (cfg, ins, OP_ICONST);
3991         ins->dreg = dreg;
3992         ins->type = STACK_I4;
3993
3994         return ins;
3995 }
3996
3997 /*
3998  * Returns NULL and set the cfg exception on error.
3999  */
4000 static G_GNUC_UNUSED MonoInst*
4001 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used)
4002 {
4003         MonoInst *ptr;
4004         int dreg;
4005         gpointer *trampoline;
4006         MonoInst *obj, *method_ins, *tramp_ins;
4007         MonoDomain *domain;
4008         guint8 **code_slot;
4009
4010         obj = handle_alloc (cfg, klass, FALSE, 0);
4011         if (!obj)
4012                 return NULL;
4013
4014         /* Inline the contents of mono_delegate_ctor */
4015
4016         /* Set target field */
4017         /* Optimize away setting of NULL target */
4018         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
4019                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4020                 if (cfg->gen_write_barriers) {
4021                         dreg = alloc_preg (cfg);
4022                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target));
4023                         emit_write_barrier (cfg, ptr, target, 0);
4024                 }
4025         }
4026
4027         /* Set method field */
4028         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4029         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4030         if (cfg->gen_write_barriers) {
4031                 dreg = alloc_preg (cfg);
4032                 EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method));
4033                 emit_write_barrier (cfg, ptr, method_ins, 0);
4034         }
4035         /*
4036          * To avoid looking up the compiled code belonging to the target method
4037          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4038          * store it, and we fill it after the method has been compiled.
4039          */
4040         if (!cfg->compile_aot && !method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4041                 MonoInst *code_slot_ins;
4042
4043                 if (context_used) {
4044                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4045                 } else {
4046                         domain = mono_domain_get ();
4047                         mono_domain_lock (domain);
4048                         if (!domain_jit_info (domain)->method_code_hash)
4049                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4050                         code_slot = g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4051                         if (!code_slot) {
4052                                 code_slot = mono_domain_alloc0 (domain, sizeof (gpointer));
4053                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4054                         }
4055                         mono_domain_unlock (domain);
4056
4057                         EMIT_NEW_PCONST (cfg, code_slot_ins, code_slot);
4058                 }
4059                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4060         }
4061
4062         /* Set invoke_impl field */
4063         if (cfg->compile_aot) {
4064                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, klass);
4065         } else {
4066                 trampoline = mono_create_delegate_trampoline (cfg->domain, klass);
4067                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4068         }
4069         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4070
4071         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4072
4073         return obj;
4074 }
4075
4076 static MonoInst*
4077 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4078 {
4079         MonoJitICallInfo *info;
4080
4081         /* Need to register the icall so it gets an icall wrapper */
4082         info = mono_get_array_new_va_icall (rank);
4083
4084         cfg->flags |= MONO_CFG_HAS_VARARGS;
4085
4086         /* mono_array_new_va () needs a vararg calling convention */
4087         cfg->disable_llvm = TRUE;
4088
4089         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4090         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4091 }
4092
4093 static void
4094 mono_emit_load_got_addr (MonoCompile *cfg)
4095 {
4096         MonoInst *getaddr, *dummy_use;
4097
4098         if (!cfg->got_var || cfg->got_var_allocated)
4099                 return;
4100
4101         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4102         getaddr->cil_code = cfg->header->code;
4103         getaddr->dreg = cfg->got_var->dreg;
4104
4105         /* Add it to the start of the first bblock */
4106         if (cfg->bb_entry->code) {
4107                 getaddr->next = cfg->bb_entry->code;
4108                 cfg->bb_entry->code = getaddr;
4109         }
4110         else
4111                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4112
4113         cfg->got_var_allocated = TRUE;
4114
4115         /*
4116          * Add a dummy use to keep the got_var alive, since real uses might
4117          * only be generated by the back ends.
4118          * Add it to end_bblock, so the variable's lifetime covers the whole
4119          * method.
4120          * It would be better to make the usage of the got var explicit in all
4121          * cases when the backend needs it (i.e. calls, throw etc.), so this
4122          * wouldn't be needed.
4123          */
4124         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4125         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4126 }
4127
4128 static int inline_limit;
4129 static gboolean inline_limit_inited;
4130
4131 static gboolean
4132 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4133 {
4134         MonoMethodHeaderSummary header;
4135         MonoVTable *vtable;
4136 #ifdef MONO_ARCH_SOFT_FLOAT
4137         MonoMethodSignature *sig = mono_method_signature (method);
4138         int i;
4139 #endif
4140
4141         if (cfg->generic_sharing_context)
4142                 return FALSE;
4143
4144         if (cfg->inline_depth > 10)
4145                 return FALSE;
4146
4147 #ifdef MONO_ARCH_HAVE_LMF_OPS
4148         if (((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4149                  (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) &&
4150             !MONO_TYPE_ISSTRUCT (signature->ret) && !mini_class_is_system_array (method->klass))
4151                 return TRUE;
4152 #endif
4153
4154
4155         if (!mono_method_get_header_summary (method, &header))
4156                 return FALSE;
4157
4158         /*runtime, icall and pinvoke are checked by summary call*/
4159         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4160             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4161             (mono_class_is_marshalbyref (method->klass)) ||
4162             header.has_clauses)
4163                 return FALSE;
4164
4165         /* also consider num_locals? */
4166         /* Do the size check early to avoid creating vtables */
4167         if (!inline_limit_inited) {
4168                 if (getenv ("MONO_INLINELIMIT"))
4169                         inline_limit = atoi (getenv ("MONO_INLINELIMIT"));
4170                 else
4171                         inline_limit = INLINE_LENGTH_LIMIT;
4172                 inline_limit_inited = TRUE;
4173         }
4174         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4175                 return FALSE;
4176
4177         /*
4178          * if we can initialize the class of the method right away, we do,
4179          * otherwise we don't allow inlining if the class needs initialization,
4180          * since it would mean inserting a call to mono_runtime_class_init()
4181          * inside the inlined code
4182          */
4183         if (!(cfg->opt & MONO_OPT_SHARED)) {
4184                 if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
4185                         if (cfg->run_cctors && method->klass->has_cctor) {
4186                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4187                                 if (!method->klass->runtime_info)
4188                                         /* No vtable created yet */
4189                                         return FALSE;
4190                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4191                                 if (!vtable)
4192                                         return FALSE;
4193                                 /* This makes so that inline cannot trigger */
4194                                 /* .cctors: too many apps depend on them */
4195                                 /* running with a specific order... */
4196                                 if (! vtable->initialized)
4197                                         return FALSE;
4198                                 mono_runtime_class_init (vtable);
4199                         }
4200                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4201                         if (!method->klass->runtime_info)
4202                                 /* No vtable created yet */
4203                                 return FALSE;
4204                         vtable = mono_class_vtable (cfg->domain, method->klass);
4205                         if (!vtable)
4206                                 return FALSE;
4207                         if (!vtable->initialized)
4208                                 return FALSE;
4209                 }
4210         } else {
4211                 /*
4212                  * If we're compiling for shared code
4213                  * the cctor will need to be run at aot method load time, for example,
4214                  * or at the end of the compilation of the inlining method.
4215                  */
4216                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
4217                         return FALSE;
4218         }
4219
4220         /*
4221          * CAS - do not inline methods with declarative security
4222          * Note: this has to be before any possible return TRUE;
4223          */
4224         if (mono_security_method_has_declsec (method))
4225                 return FALSE;
4226
4227 #ifdef MONO_ARCH_SOFT_FLOAT
4228         /* FIXME: */
4229         if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4230                 return FALSE;
4231         for (i = 0; i < sig->param_count; ++i)
4232                 if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4233                         return FALSE;
4234 #endif
4235
4236         return TRUE;
4237 }
4238
4239 static gboolean
4240 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoVTable *vtable)
4241 {
4242         if (vtable->initialized && !cfg->compile_aot)
4243                 return FALSE;
4244
4245         if (vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)
4246                 return FALSE;
4247
4248         if (!mono_class_needs_cctor_run (vtable->klass, method))
4249                 return FALSE;
4250
4251         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (vtable->klass == method->klass))
4252                 /* The initialization is already done before the method is called */
4253                 return FALSE;
4254
4255         return TRUE;
4256 }
4257
4258 static MonoInst*
4259 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4260 {
4261         MonoInst *ins;
4262         guint32 size;
4263         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4264         int context_used;
4265
4266         if (mini_is_gsharedvt_klass (cfg, klass)) {
4267                 size = -1;
4268         } else {
4269                 mono_class_init (klass);
4270                 size = mono_class_array_element_size (klass);
4271         }
4272
4273         mult_reg = alloc_preg (cfg);
4274         array_reg = arr->dreg;
4275         index_reg = index->dreg;
4276
4277 #if SIZEOF_REGISTER == 8
4278         /* The array reg is 64 bits but the index reg is only 32 */
4279         if (COMPILE_LLVM (cfg)) {
4280                 /* Not needed */
4281                 index2_reg = index_reg;
4282         } else {
4283                 index2_reg = alloc_preg (cfg);
4284                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4285         }
4286 #else
4287         if (index->type == STACK_I8) {
4288                 index2_reg = alloc_preg (cfg);
4289                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4290         } else {
4291                 index2_reg = index_reg;
4292         }
4293 #endif
4294
4295         if (bcheck)
4296                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4297
4298 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4299         if (size == 1 || size == 2 || size == 4 || size == 8) {
4300                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4301
4302                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], G_STRUCT_OFFSET (MonoArray, vector));
4303                 ins->klass = mono_class_get_element_class (klass);
4304                 ins->type = STACK_MP;
4305
4306                 return ins;
4307         }
4308 #endif
4309
4310         add_reg = alloc_ireg_mp (cfg);
4311
4312         if (size == -1) {
4313                 MonoInst *rgctx_ins;
4314
4315                 /* gsharedvt */
4316                 g_assert (cfg->generic_sharing_context);
4317                 context_used = mini_class_check_context_used (cfg, klass);
4318                 g_assert (context_used);
4319                 rgctx_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4320                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4321         } else {
4322                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4323         }
4324         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4325         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
4326         ins->klass = mono_class_get_element_class (klass);
4327         ins->type = STACK_MP;
4328         MONO_ADD_INS (cfg->cbb, ins);
4329
4330         return ins;
4331 }
4332
4333 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4334 static MonoInst*
4335 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4336 {
4337         int bounds_reg = alloc_preg (cfg);
4338         int add_reg = alloc_ireg_mp (cfg);
4339         int mult_reg = alloc_preg (cfg);
4340         int mult2_reg = alloc_preg (cfg);
4341         int low1_reg = alloc_preg (cfg);
4342         int low2_reg = alloc_preg (cfg);
4343         int high1_reg = alloc_preg (cfg);
4344         int high2_reg = alloc_preg (cfg);
4345         int realidx1_reg = alloc_preg (cfg);
4346         int realidx2_reg = alloc_preg (cfg);
4347         int sum_reg = alloc_preg (cfg);
4348         int index1, index2, tmpreg;
4349         MonoInst *ins;
4350         guint32 size;
4351
4352         mono_class_init (klass);
4353         size = mono_class_array_element_size (klass);
4354
4355         index1 = index_ins1->dreg;
4356         index2 = index_ins2->dreg;
4357
4358 #if SIZEOF_REGISTER == 8
4359         /* The array reg is 64 bits but the index reg is only 32 */
4360         if (COMPILE_LLVM (cfg)) {
4361                 /* Not needed */
4362         } else {
4363                 tmpreg = alloc_preg (cfg);
4364                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4365                 index1 = tmpreg;
4366                 tmpreg = alloc_preg (cfg);
4367                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4368                 index2 = tmpreg;
4369         }
4370 #else
4371         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4372         tmpreg = -1;
4373 #endif
4374
4375         /* range checking */
4376         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4377                                        arr->dreg, G_STRUCT_OFFSET (MonoArray, bounds));
4378
4379         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4380                                        bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4381         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4382         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4383                                        bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, length));
4384         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4385         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4386
4387         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4388                                        bounds_reg, sizeof (MonoArrayBounds) + G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4389         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4390         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4391                                        bounds_reg, sizeof (MonoArrayBounds) + G_STRUCT_OFFSET (MonoArrayBounds, length));
4392         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4393         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4394
4395         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4396         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4397         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4398         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4399         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
4400
4401         ins->type = STACK_MP;
4402         ins->klass = klass;
4403         MONO_ADD_INS (cfg->cbb, ins);
4404
4405         return ins;
4406 }
4407 #endif
4408
4409 static MonoInst*
4410 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4411 {
4412         int rank;
4413         MonoInst *addr;
4414         MonoMethod *addr_method;
4415         int element_size;
4416
4417         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4418
4419         if (rank == 1)
4420                 return mini_emit_ldelema_1_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], TRUE);
4421
4422 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4423         /* emit_ldelema_2 depends on OP_LMUL */
4424         if (rank == 2 && (cfg->opt & MONO_OPT_INTRINS)) {
4425                 return mini_emit_ldelema_2_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], sp [2]);
4426         }
4427 #endif
4428
4429         element_size = mono_class_array_element_size (cmethod->klass->element_class);
4430         addr_method = mono_marshal_get_array_address (rank, element_size);
4431         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4432
4433         return addr;
4434 }
4435
4436 static MonoBreakPolicy
4437 always_insert_breakpoint (MonoMethod *method)
4438 {
4439         return MONO_BREAK_POLICY_ALWAYS;
4440 }
4441
4442 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4443
4444 /**
4445  * mono_set_break_policy:
4446  * policy_callback: the new callback function
4447  *
4448  * Allow embedders to decide wherther to actually obey breakpoint instructions
4449  * (both break IL instructions and Debugger.Break () method calls), for example
4450  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4451  * untrusted or semi-trusted code.
4452  *
4453  * @policy_callback will be called every time a break point instruction needs to
4454  * be inserted with the method argument being the method that calls Debugger.Break()
4455  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
4456  * if it wants the breakpoint to not be effective in the given method.
4457  * #MONO_BREAK_POLICY_ALWAYS is the default.
4458  */
4459 void
4460 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4461 {
4462         if (policy_callback)
4463                 break_policy_func = policy_callback;
4464         else
4465                 break_policy_func = always_insert_breakpoint;
4466 }
4467
4468 static gboolean
4469 should_insert_brekpoint (MonoMethod *method) {
4470         switch (break_policy_func (method)) {
4471         case MONO_BREAK_POLICY_ALWAYS:
4472                 return TRUE;
4473         case MONO_BREAK_POLICY_NEVER:
4474                 return FALSE;
4475         case MONO_BREAK_POLICY_ON_DBG:
4476                 return mono_debug_using_mono_debugger ();
4477         default:
4478                 g_warning ("Incorrect value returned from break policy callback");
4479                 return FALSE;
4480         }
4481 }
4482
4483 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4484 static MonoInst*
4485 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4486 {
4487         MonoInst *addr, *store, *load;
4488         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4489
4490         /* the bounds check is already done by the callers */
4491         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4492         if (is_set) {
4493                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4494                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4495                 if (mini_type_is_reference (cfg, fsig->params [2]))
4496                         emit_write_barrier (cfg, addr, load, -1);
4497         } else {
4498                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4499                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4500         }
4501         return store;
4502 }
4503
4504
4505 static gboolean
4506 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4507 {
4508         return mini_type_is_reference (cfg, &klass->byval_arg);
4509 }
4510
4511 static MonoInst*
4512 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4513 {
4514         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4515                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
4516                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4517                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4518                 MonoInst *iargs [3];
4519
4520                 if (!helper->slot)
4521                         mono_class_setup_vtable (obj_array);
4522                 g_assert (helper->slot);
4523
4524                 if (sp [0]->type != STACK_OBJ)
4525                         return NULL;
4526                 if (sp [2]->type != STACK_OBJ)
4527                         return NULL;
4528
4529                 iargs [2] = sp [2];
4530                 iargs [1] = sp [1];
4531                 iargs [0] = sp [0];
4532
4533                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4534         } else {
4535                 MonoInst *ins;
4536
4537                 if (mini_is_gsharedvt_klass (cfg, klass)) {
4538                         MonoInst *addr;
4539
4540                         // FIXME-VT: OP_ICONST optimization
4541                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4542                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4543                         ins->opcode = OP_STOREV_MEMBASE;
4544                 } else if (sp [1]->opcode == OP_ICONST) {
4545                         int array_reg = sp [0]->dreg;
4546                         int index_reg = sp [1]->dreg;
4547                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
4548
4549                         if (safety_checks)
4550                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4551                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4552                 } else {
4553                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4554                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4555                         if (generic_class_is_reference_type (cfg, klass))
4556                                 emit_write_barrier (cfg, addr, sp [2], -1);
4557                 }
4558                 return ins;
4559         }
4560 }
4561
4562 static MonoInst*
4563 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4564 {
4565         MonoClass *eklass;
4566
4567         if (is_set)
4568                 eklass = mono_class_from_mono_type (fsig->params [2]);
4569         else
4570                 eklass = mono_class_from_mono_type (fsig->ret);
4571
4572
4573         if (is_set) {
4574                 return emit_array_store (cfg, eklass, args, FALSE);
4575         } else {
4576                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4577                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4578                 return ins;
4579         }
4580 }
4581
4582 static MonoInst*
4583 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4584 {
4585         MonoInst *ins = NULL;
4586 #ifdef MONO_ARCH_SIMD_INTRINSICS
4587         if (cfg->opt & MONO_OPT_SIMD) {
4588                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4589                 if (ins)
4590                         return ins;
4591         }
4592 #endif
4593
4594         return ins;
4595 }
4596
4597 static MonoInst*
4598 emit_memory_barrier (MonoCompile *cfg, int kind)
4599 {
4600         MonoInst *ins = NULL;
4601         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4602         MONO_ADD_INS (cfg->cbb, ins);
4603         ins->backend.memory_barrier_kind = kind;
4604
4605         return ins;
4606 }
4607
4608 static MonoInst*
4609 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4610 {
4611         MonoInst *ins = NULL;
4612         int opcode = 0;
4613
4614         /* The LLVM backend supports these intrinsics */
4615         if (cmethod->klass == mono_defaults.math_class) {
4616                 if (strcmp (cmethod->name, "Sin") == 0) {
4617                         opcode = OP_SIN;
4618                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4619                         opcode = OP_COS;
4620                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4621                         opcode = OP_SQRT;
4622                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4623                         opcode = OP_ABS;
4624                 }
4625
4626                 if (opcode) {
4627                         MONO_INST_NEW (cfg, ins, opcode);
4628                         ins->type = STACK_R8;
4629                         ins->dreg = mono_alloc_freg (cfg);
4630                         ins->sreg1 = args [0]->dreg;
4631                         MONO_ADD_INS (cfg->cbb, ins);
4632                 }
4633
4634                 opcode = 0;
4635                 if (cfg->opt & MONO_OPT_CMOV) {
4636                         if (strcmp (cmethod->name, "Min") == 0) {
4637                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4638                                         opcode = OP_IMIN;
4639                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4640                                         opcode = OP_IMIN_UN;
4641                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4642                                         opcode = OP_LMIN;
4643                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4644                                         opcode = OP_LMIN_UN;
4645                         } else if (strcmp (cmethod->name, "Max") == 0) {
4646                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4647                                         opcode = OP_IMAX;
4648                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4649                                         opcode = OP_IMAX_UN;
4650                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4651                                         opcode = OP_LMAX;
4652                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4653                                         opcode = OP_LMAX_UN;
4654                         }
4655                 }
4656
4657                 if (opcode) {
4658                         MONO_INST_NEW (cfg, ins, opcode);
4659                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4660                         ins->dreg = mono_alloc_ireg (cfg);
4661                         ins->sreg1 = args [0]->dreg;
4662                         ins->sreg2 = args [1]->dreg;
4663                         MONO_ADD_INS (cfg->cbb, ins);
4664                 }
4665         }
4666
4667         return ins;
4668 }
4669
4670 static MonoInst*
4671 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4672 {
4673         if (cmethod->klass == mono_defaults.array_class) {
4674                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4675                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4676                 if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4677                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4678         }
4679
4680         return NULL;
4681 }
4682
4683 static MonoInst*
4684 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4685 {
4686         MonoInst *ins = NULL;
4687
4688         static MonoClass *runtime_helpers_class = NULL;
4689         if (! runtime_helpers_class)
4690                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
4691                         "System.Runtime.CompilerServices", "RuntimeHelpers");
4692
4693         if (cmethod->klass == mono_defaults.string_class) {
4694                 if (strcmp (cmethod->name, "get_Chars") == 0) {
4695                         int dreg = alloc_ireg (cfg);
4696                         int index_reg = alloc_preg (cfg);
4697                         int mult_reg = alloc_preg (cfg);
4698                         int add_reg = alloc_preg (cfg);
4699
4700 #if SIZEOF_REGISTER == 8
4701                         /* The array reg is 64 bits but the index reg is only 32 */
4702                         MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4703 #else
4704                         index_reg = args [1]->dreg;
4705 #endif
4706                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4707
4708 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4709                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, G_STRUCT_OFFSET (MonoString, chars));
4710                         add_reg = ins->dreg;
4711                         /* Avoid a warning */
4712                         mult_reg = 0;
4713                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4714                                                                    add_reg, 0);
4715 #else
4716                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4717                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4718                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4719                                                                    add_reg, G_STRUCT_OFFSET (MonoString, chars));
4720 #endif
4721                         type_from_op (ins, NULL, NULL);
4722                         return ins;
4723                 } else if (strcmp (cmethod->name, "get_Length") == 0) {
4724                         int dreg = alloc_ireg (cfg);
4725                         /* Decompose later to allow more optimizations */
4726                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4727                         ins->type = STACK_I4;
4728                         ins->flags |= MONO_INST_FAULT;
4729                         cfg->cbb->has_array_access = TRUE;
4730                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4731
4732                         return ins;
4733                 } else if (strcmp (cmethod->name, "InternalSetChar") == 0) {
4734                         int mult_reg = alloc_preg (cfg);
4735                         int add_reg = alloc_preg (cfg);
4736
4737                         /* The corlib functions check for oob already. */
4738                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, args [1]->dreg, 1);
4739                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4740                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, G_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
4741                         return cfg->cbb->last_ins;
4742                 } else
4743                         return NULL;
4744         } else if (cmethod->klass == mono_defaults.object_class) {
4745
4746                 if (strcmp (cmethod->name, "GetType") == 0) {
4747                         int dreg = alloc_ireg_ref (cfg);
4748                         int vt_reg = alloc_preg (cfg);
4749                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
4750                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, G_STRUCT_OFFSET (MonoVTable, type));
4751                         type_from_op (ins, NULL, NULL);
4752
4753                         return ins;
4754 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
4755                 } else if (strcmp (cmethod->name, "InternalGetHashCode") == 0 && !mono_gc_is_moving ()) {
4756                         int dreg = alloc_ireg (cfg);
4757                         int t1 = alloc_ireg (cfg);
4758
4759                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4760                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4761                         ins->type = STACK_I4;
4762
4763                         return ins;
4764 #endif
4765                 } else if (strcmp (cmethod->name, ".ctor") == 0) {
4766                         MONO_INST_NEW (cfg, ins, OP_NOP);
4767                         MONO_ADD_INS (cfg->cbb, ins);
4768                         return ins;
4769                 } else
4770                         return NULL;
4771         } else if (cmethod->klass == mono_defaults.array_class) {
4772                 if (strcmp (cmethod->name + 1, "etGenericValueImpl") == 0)
4773                         return emit_array_generic_access (cfg, fsig, args, *cmethod->name == 'S');
4774
4775 #ifndef MONO_BIG_ARRAYS
4776                 /*
4777                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4778                  * Array methods.
4779                  */
4780                 if ((strcmp (cmethod->name, "GetLength") == 0 || strcmp (cmethod->name, "GetLowerBound") == 0) && args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4781                         int dreg = alloc_ireg (cfg);
4782                         int bounds_reg = alloc_ireg_mp (cfg);
4783                         MonoBasicBlock *end_bb, *szarray_bb;
4784                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4785
4786                         NEW_BBLOCK (cfg, end_bb);
4787                         NEW_BBLOCK (cfg, szarray_bb);
4788
4789                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4790                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoArray, bounds));
4791                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4792                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
4793                         /* Non-szarray case */
4794                         if (get_length)
4795                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4796                                                                            bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, length));
4797                         else
4798                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4799                                                                            bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4800                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4801                         MONO_START_BB (cfg, szarray_bb);
4802                         /* Szarray case */
4803                         if (get_length)
4804                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4805                                                                            args [0]->dreg, G_STRUCT_OFFSET (MonoArray, max_length));
4806                         else
4807                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4808                         MONO_START_BB (cfg, end_bb);
4809
4810                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
4811                         ins->type = STACK_I4;
4812
4813                         return ins;
4814                 }
4815 #endif
4816
4817                 if (cmethod->name [0] != 'g')
4818                         return NULL;
4819
4820                 if (strcmp (cmethod->name, "get_Rank") == 0) {
4821                         int dreg = alloc_ireg (cfg);
4822                         int vtable_reg = alloc_preg (cfg);
4823                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
4824                                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
4825                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
4826                                                                    vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
4827                         type_from_op (ins, NULL, NULL);
4828
4829                         return ins;
4830                 } else if (strcmp (cmethod->name, "get_Length") == 0) {
4831                         int dreg = alloc_ireg (cfg);
4832
4833                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4834                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoArray, max_length));
4835                         type_from_op (ins, NULL, NULL);
4836
4837                         return ins;
4838                 } else
4839                         return NULL;
4840         } else if (cmethod->klass == runtime_helpers_class) {
4841
4842                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0) {
4843                         EMIT_NEW_ICONST (cfg, ins, G_STRUCT_OFFSET (MonoString, chars));
4844                         return ins;
4845                 } else
4846                         return NULL;
4847         } else if (cmethod->klass == mono_defaults.thread_class) {
4848                 if (strcmp (cmethod->name, "SpinWait_nop") == 0) {
4849                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
4850                         MONO_ADD_INS (cfg->cbb, ins);
4851                         return ins;
4852                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0) {
4853                         return emit_memory_barrier (cfg, FullBarrier);
4854                 }
4855         } else if (cmethod->klass == mono_defaults.monitor_class) {
4856
4857                 /* FIXME this should be integrated to the check below once we support the trampoline version */
4858 #if defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
4859                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) {
4860                         MonoMethod *fast_method = NULL;
4861
4862                         /* Avoid infinite recursion */
4863                         if (cfg->method->wrapper_type == MONO_WRAPPER_UNKNOWN && !strcmp (cfg->method->name, "FastMonitorEnterV4"))
4864                                 return NULL;
4865
4866                         fast_method = mono_monitor_get_fast_path (cmethod);
4867                         if (!fast_method)
4868                                 return NULL;
4869
4870                         return (MonoInst*)mono_emit_method_call (cfg, fast_method, args, NULL);
4871                 }
4872 #endif
4873
4874 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
4875                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 1) {
4876                         MonoCallInst *call;
4877
4878                         if (COMPILE_LLVM (cfg)) {
4879                                 /*
4880                                  * Pass the argument normally, the LLVM backend will handle the
4881                                  * calling convention problems.
4882                                  */
4883                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4884                         } else {
4885                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER,
4886                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
4887                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
4888                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
4889                         }
4890
4891                         return (MonoInst*)call;
4892                 } else if (strcmp (cmethod->name, "Exit") == 0) {
4893                         MonoCallInst *call;
4894
4895                         if (COMPILE_LLVM (cfg)) {
4896                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4897                         } else {
4898                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT,
4899                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
4900                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
4901                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
4902                         }
4903
4904                         return (MonoInst*)call;
4905                 }
4906 #elif defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
4907                 {
4908                 MonoMethod *fast_method = NULL;
4909
4910                 /* Avoid infinite recursion */
4911                 if (cfg->method->wrapper_type == MONO_WRAPPER_UNKNOWN &&
4912                                 (strcmp (cfg->method->name, "FastMonitorEnter") == 0 ||
4913                                  strcmp (cfg->method->name, "FastMonitorExit") == 0))
4914                         return NULL;
4915
4916                 if ((strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) ||
4917                                 strcmp (cmethod->name, "Exit") == 0)
4918                         fast_method = mono_monitor_get_fast_path (cmethod);
4919                 if (!fast_method)
4920                         return NULL;
4921
4922                 return (MonoInst*)mono_emit_method_call (cfg, fast_method, args, NULL);
4923                 }
4924 #endif
4925         } else if (cmethod->klass->image == mono_defaults.corlib &&
4926                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
4927                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
4928                 ins = NULL;
4929
4930 #if SIZEOF_REGISTER == 8
4931                 if (strcmp (cmethod->name, "Read") == 0 && (fsig->params [0]->type == MONO_TYPE_I8)) {
4932                         /* 64 bit reads are already atomic */
4933                         MONO_INST_NEW (cfg, ins, OP_LOADI8_MEMBASE);
4934                         ins->dreg = mono_alloc_preg (cfg);
4935                         ins->inst_basereg = args [0]->dreg;
4936                         ins->inst_offset = 0;
4937                         MONO_ADD_INS (cfg->cbb, ins);
4938                 }
4939 #endif
4940
4941 #ifdef MONO_ARCH_HAVE_ATOMIC_ADD
4942                 if (strcmp (cmethod->name, "Increment") == 0) {
4943                         MonoInst *ins_iconst;
4944                         guint32 opcode = 0;
4945
4946                         if (fsig->params [0]->type == MONO_TYPE_I4)
4947                                 opcode = OP_ATOMIC_ADD_NEW_I4;
4948 #if SIZEOF_REGISTER == 8
4949                         else if (fsig->params [0]->type == MONO_TYPE_I8)
4950                                 opcode = OP_ATOMIC_ADD_NEW_I8;
4951 #endif
4952                         if (opcode) {
4953                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
4954                                 ins_iconst->inst_c0 = 1;
4955                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
4956                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
4957
4958                                 MONO_INST_NEW (cfg, ins, opcode);
4959                                 ins->dreg = mono_alloc_ireg (cfg);
4960                                 ins->inst_basereg = args [0]->dreg;
4961                                 ins->inst_offset = 0;
4962                                 ins->sreg2 = ins_iconst->dreg;
4963                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
4964                                 MONO_ADD_INS (cfg->cbb, ins);
4965                         }
4966                 } else if (strcmp (cmethod->name, "Decrement") == 0) {
4967                         MonoInst *ins_iconst;
4968                         guint32 opcode = 0;
4969
4970                         if (fsig->params [0]->type == MONO_TYPE_I4)
4971                                 opcode = OP_ATOMIC_ADD_NEW_I4;
4972 #if SIZEOF_REGISTER == 8
4973                         else if (fsig->params [0]->type == MONO_TYPE_I8)
4974                                 opcode = OP_ATOMIC_ADD_NEW_I8;
4975 #endif
4976                         if (opcode) {
4977                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
4978                                 ins_iconst->inst_c0 = -1;
4979                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
4980                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
4981
4982                                 MONO_INST_NEW (cfg, ins, opcode);
4983                                 ins->dreg = mono_alloc_ireg (cfg);
4984                                 ins->inst_basereg = args [0]->dreg;
4985                                 ins->inst_offset = 0;
4986                                 ins->sreg2 = ins_iconst->dreg;
4987                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
4988                                 MONO_ADD_INS (cfg->cbb, ins);
4989                         }
4990                 } else if (strcmp (cmethod->name, "Add") == 0) {
4991                         guint32 opcode = 0;
4992
4993                         if (fsig->params [0]->type == MONO_TYPE_I4)
4994                                 opcode = OP_ATOMIC_ADD_NEW_I4;
4995 #if SIZEOF_REGISTER == 8
4996                         else if (fsig->params [0]->type == MONO_TYPE_I8)
4997                                 opcode = OP_ATOMIC_ADD_NEW_I8;
4998 #endif
4999
5000                         if (opcode) {
5001                                 MONO_INST_NEW (cfg, ins, opcode);
5002                                 ins->dreg = mono_alloc_ireg (cfg);
5003                                 ins->inst_basereg = args [0]->dreg;
5004                                 ins->inst_offset = 0;
5005                                 ins->sreg2 = args [1]->dreg;
5006                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
5007                                 MONO_ADD_INS (cfg->cbb, ins);
5008                         }
5009                 }
5010 #endif /* MONO_ARCH_HAVE_ATOMIC_ADD */
5011
5012 #ifdef MONO_ARCH_HAVE_ATOMIC_EXCHANGE
5013                 if (strcmp (cmethod->name, "Exchange") == 0) {
5014                         guint32 opcode;
5015                         gboolean is_ref = fsig->params [0]->type == MONO_TYPE_OBJECT;
5016
5017                         if (fsig->params [0]->type == MONO_TYPE_I4)
5018                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5019 #if SIZEOF_REGISTER == 8
5020                         else if (is_ref || (fsig->params [0]->type == MONO_TYPE_I8) ||
5021                                         (fsig->params [0]->type == MONO_TYPE_I))
5022                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5023 #else
5024                         else if (is_ref || (fsig->params [0]->type == MONO_TYPE_I))
5025                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5026 #endif
5027                         else
5028                                 return NULL;
5029
5030                         MONO_INST_NEW (cfg, ins, opcode);
5031                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5032                         ins->inst_basereg = args [0]->dreg;
5033                         ins->inst_offset = 0;
5034                         ins->sreg2 = args [1]->dreg;
5035                         MONO_ADD_INS (cfg->cbb, ins);
5036
5037                         switch (fsig->params [0]->type) {
5038                         case MONO_TYPE_I4:
5039                                 ins->type = STACK_I4;
5040                                 break;
5041                         case MONO_TYPE_I8:
5042                         case MONO_TYPE_I:
5043                                 ins->type = STACK_I8;
5044                                 break;
5045                         case MONO_TYPE_OBJECT:
5046                                 ins->type = STACK_OBJ;
5047                                 break;
5048                         default:
5049                                 g_assert_not_reached ();
5050                         }
5051
5052                         if (cfg->gen_write_barriers && is_ref)
5053                                 emit_write_barrier (cfg, args [0], args [1], -1);
5054                 }
5055 #endif /* MONO_ARCH_HAVE_ATOMIC_EXCHANGE */
5056
5057 #ifdef MONO_ARCH_HAVE_ATOMIC_CAS
5058                 if ((strcmp (cmethod->name, "CompareExchange") == 0)) {
5059                         int size = 0;
5060                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [1]);
5061                         if (fsig->params [1]->type == MONO_TYPE_I4)
5062                                 size = 4;
5063                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I)
5064                                 size = sizeof (gpointer);
5065                         else if (sizeof (gpointer) == 8 && fsig->params [1]->type == MONO_TYPE_I8)
5066                                 size = 8;
5067                         if (size == 4) {
5068                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5069                                 ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5070                                 ins->sreg1 = args [0]->dreg;
5071                                 ins->sreg2 = args [1]->dreg;
5072                                 ins->sreg3 = args [2]->dreg;
5073                                 ins->type = STACK_I4;
5074                                 MONO_ADD_INS (cfg->cbb, ins);
5075                         } else if (size == 8) {
5076                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I8);
5077                                 ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5078                                 ins->sreg1 = args [0]->dreg;
5079                                 ins->sreg2 = args [1]->dreg;
5080                                 ins->sreg3 = args [2]->dreg;
5081                                 ins->type = STACK_I8;
5082                                 MONO_ADD_INS (cfg->cbb, ins);
5083                         } else {
5084                                 /* g_assert_not_reached (); */
5085                         }
5086                         if (cfg->gen_write_barriers && is_ref)
5087                                 emit_write_barrier (cfg, args [0], args [1], -1);
5088                 }
5089 #endif /* MONO_ARCH_HAVE_ATOMIC_CAS */
5090
5091                 if (strcmp (cmethod->name, "MemoryBarrier") == 0)
5092                         ins = emit_memory_barrier (cfg, FullBarrier);
5093
5094                 if (ins)
5095                         return ins;
5096         } else if (cmethod->klass->image == mono_defaults.corlib) {
5097                 if (cmethod->name [0] == 'B' && strcmp (cmethod->name, "Break") == 0
5098                                 && strcmp (cmethod->klass->name, "Debugger") == 0) {
5099                         if (should_insert_brekpoint (cfg->method)) {
5100                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5101                         } else {
5102                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5103                                 MONO_ADD_INS (cfg->cbb, ins);
5104                         }
5105                         return ins;
5106                 }
5107                 if (cmethod->name [0] == 'g' && strcmp (cmethod->name, "get_IsRunningOnWindows") == 0
5108                                 && strcmp (cmethod->klass->name, "Environment") == 0) {
5109 #ifdef TARGET_WIN32
5110                         EMIT_NEW_ICONST (cfg, ins, 1);
5111 #else
5112                         EMIT_NEW_ICONST (cfg, ins, 0);
5113 #endif
5114                         return ins;
5115                 }
5116         } else if (cmethod->klass == mono_defaults.math_class) {
5117                 /*
5118                  * There is general branches code for Min/Max, but it does not work for
5119                  * all inputs:
5120                  * http://everything2.com/?node_id=1051618
5121                  */
5122         }
5123
5124 #ifdef MONO_ARCH_SIMD_INTRINSICS
5125         if (cfg->opt & MONO_OPT_SIMD) {
5126                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5127                 if (ins)
5128                         return ins;
5129         }
5130 #endif
5131
5132         if (COMPILE_LLVM (cfg)) {
5133                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5134                 if (ins)
5135                         return ins;
5136         }
5137
5138         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5139 }
5140
5141 /*
5142  * This entry point could be used later for arbitrary method
5143  * redirection.
5144  */
5145 inline static MonoInst*
5146 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5147                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this)
5148 {
5149         if (method->klass == mono_defaults.string_class) {
5150                 /* managed string allocation support */
5151                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
5152                         MonoInst *iargs [2];
5153                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5154                         MonoMethod *managed_alloc = NULL;
5155
5156                         g_assert (vtable); /*Should not fail since it System.String*/
5157 #ifndef MONO_CROSS_COMPILE
5158                         managed_alloc = mono_gc_get_managed_allocator (vtable, FALSE);
5159 #endif
5160                         if (!managed_alloc)
5161                                 return NULL;
5162                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5163                         iargs [1] = args [0];
5164                         return mono_emit_method_call (cfg, managed_alloc, iargs, this);
5165                 }
5166         }
5167         return NULL;
5168 }
5169
5170 static void
5171 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5172 {
5173         MonoInst *store, *temp;
5174         int i;
5175
5176         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5177                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5178
5179                 /*
5180                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5181                  * would be different than the MonoInst's used to represent arguments, and
5182                  * the ldelema implementation can't deal with that.
5183                  * Solution: When ldelema is used on an inline argument, create a var for
5184                  * it, emit ldelema on that var, and emit the saving code below in
5185                  * inline_method () if needed.
5186                  */
5187                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5188                 cfg->args [i] = temp;
5189                 /* This uses cfg->args [i] which is set by the preceeding line */
5190                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5191                 store->cil_code = sp [0]->cil_code;
5192                 sp++;
5193         }
5194 }
5195
5196 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5197 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5198
5199 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5200 static gboolean
5201 check_inline_called_method_name_limit (MonoMethod *called_method)
5202 {
5203         int strncmp_result;
5204         static char *limit = NULL;
5205
5206         if (limit == NULL) {
5207                 char *limit_string = getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5208
5209                 if (limit_string != NULL)
5210                         limit = limit_string;
5211                 else
5212                         limit = (char *) "";
5213         }
5214
5215         if (limit [0] != '\0') {
5216                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5217
5218                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5219                 g_free (called_method_name);
5220
5221                 //return (strncmp_result <= 0);
5222                 return (strncmp_result == 0);
5223         } else {
5224                 return TRUE;
5225         }
5226 }
5227 #endif
5228
5229 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5230 static gboolean
5231 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5232 {
5233         int strncmp_result;
5234         static char *limit = NULL;
5235
5236         if (limit == NULL) {
5237                 char *limit_string = getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5238                 if (limit_string != NULL) {
5239                         limit = limit_string;
5240                 } else {
5241                         limit = (char *) "";
5242                 }
5243         }
5244
5245         if (limit [0] != '\0') {
5246                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5247
5248                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5249                 g_free (caller_method_name);
5250
5251                 //return (strncmp_result <= 0);
5252                 return (strncmp_result == 0);
5253         } else {
5254                 return TRUE;
5255         }
5256 }
5257 #endif
5258
5259 static void
5260 emit_init_rvar (MonoCompile *cfg, MonoInst *rvar, MonoType *rtype)
5261 {
5262         static double r8_0 = 0.0;
5263         MonoInst *ins;
5264
5265         switch (rvar->type) {
5266         case STACK_I4:
5267                 MONO_EMIT_NEW_ICONST (cfg, rvar->dreg, 0);
5268                 break;
5269         case STACK_I8:
5270                 MONO_EMIT_NEW_I8CONST (cfg, rvar->dreg, 0);
5271                 break;
5272         case STACK_PTR:
5273         case STACK_MP:
5274         case STACK_OBJ:
5275                 MONO_EMIT_NEW_PCONST (cfg, rvar->dreg, 0);
5276                 break;
5277         case STACK_R8:
5278                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5279                 ins->type = STACK_R8;
5280                 ins->inst_p0 = (void*)&r8_0;
5281                 ins->dreg = rvar->dreg;
5282                 MONO_ADD_INS (cfg->cbb, ins);
5283                 break;
5284         case STACK_VTYPE:
5285                 MONO_EMIT_NEW_VZERO (cfg, rvar->dreg, mono_class_from_mono_type (rtype));
5286                 break;
5287         default:
5288                 g_assert_not_reached ();
5289         }
5290 }
5291
5292 static int
5293 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
5294                 guchar *ip, guint real_offset, GList *dont_inline, gboolean inline_always)
5295 {
5296         MonoInst *ins, *rvar = NULL;
5297         MonoMethodHeader *cheader;
5298         MonoBasicBlock *ebblock, *sbblock;
5299         int i, costs;
5300         MonoMethod *prev_inlined_method;
5301         MonoInst **prev_locals, **prev_args;
5302         MonoType **prev_arg_types;
5303         guint prev_real_offset;
5304         GHashTable *prev_cbb_hash;
5305         MonoBasicBlock **prev_cil_offset_to_bb;
5306         MonoBasicBlock *prev_cbb;
5307         unsigned char* prev_cil_start;
5308         guint32 prev_cil_offset_to_bb_len;
5309         MonoMethod *prev_current_method;
5310         MonoGenericContext *prev_generic_context;
5311         gboolean ret_var_set, prev_ret_var_set, virtual = FALSE;
5312
5313         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
5314
5315 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5316         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
5317                 return 0;
5318 #endif
5319 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5320         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
5321                 return 0;
5322 #endif
5323
5324         if (cfg->verbose_level > 2)
5325                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
5326
5327         if (!cmethod->inline_info) {
5328                 cfg->stat_inlineable_methods++;
5329                 cmethod->inline_info = 1;
5330         }
5331
5332         /* allocate local variables */
5333         cheader = mono_method_get_header (cmethod);
5334
5335         if (cheader == NULL || mono_loader_get_last_error ()) {
5336                 MonoLoaderError *error = mono_loader_get_last_error ();
5337
5338                 if (cheader)
5339                         mono_metadata_free_mh (cheader);
5340                 if (inline_always && error)
5341                         mono_cfg_set_exception (cfg, error->exception_type);
5342
5343                 mono_loader_clear_error ();
5344                 return 0;
5345         }
5346
5347         /*Must verify before creating locals as it can cause the JIT to assert.*/
5348         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
5349                 mono_metadata_free_mh (cheader);
5350                 return 0;
5351         }
5352
5353         /* allocate space to store the return value */
5354         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
5355                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
5356         }
5357
5358         prev_locals = cfg->locals;
5359         cfg->locals = mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
5360         for (i = 0; i < cheader->num_locals; ++i)
5361                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
5362
5363         /* allocate start and end blocks */
5364         /* This is needed so if the inline is aborted, we can clean up */
5365         NEW_BBLOCK (cfg, sbblock);
5366         sbblock->real_offset = real_offset;
5367
5368         NEW_BBLOCK (cfg, ebblock);
5369         ebblock->block_num = cfg->num_bblocks++;
5370         ebblock->real_offset = real_offset;
5371
5372         prev_args = cfg->args;
5373         prev_arg_types = cfg->arg_types;
5374         prev_inlined_method = cfg->inlined_method;
5375         cfg->inlined_method = cmethod;
5376         cfg->ret_var_set = FALSE;
5377         cfg->inline_depth ++;
5378         prev_real_offset = cfg->real_offset;
5379         prev_cbb_hash = cfg->cbb_hash;
5380         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
5381         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
5382         prev_cil_start = cfg->cil_start;
5383         prev_cbb = cfg->cbb;
5384         prev_current_method = cfg->current_method;
5385         prev_generic_context = cfg->generic_context;
5386         prev_ret_var_set = cfg->ret_var_set;
5387
5388         if (*ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
5389                 virtual = TRUE;
5390
5391         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, dont_inline, sp, real_offset, virtual);
5392
5393         ret_var_set = cfg->ret_var_set;
5394
5395         cfg->inlined_method = prev_inlined_method;
5396         cfg->real_offset = prev_real_offset;
5397         cfg->cbb_hash = prev_cbb_hash;
5398         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
5399         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
5400         cfg->cil_start = prev_cil_start;
5401         cfg->locals = prev_locals;
5402         cfg->args = prev_args;
5403         cfg->arg_types = prev_arg_types;
5404         cfg->current_method = prev_current_method;
5405         cfg->generic_context = prev_generic_context;
5406         cfg->ret_var_set = prev_ret_var_set;
5407         cfg->inline_depth --;
5408
5409         if ((costs >= 0 && costs < 60) || inline_always) {
5410                 if (cfg->verbose_level > 2)
5411                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
5412
5413                 cfg->stat_inlined_methods++;
5414
5415                 /* always add some code to avoid block split failures */
5416                 MONO_INST_NEW (cfg, ins, OP_NOP);
5417                 MONO_ADD_INS (prev_cbb, ins);
5418
5419                 prev_cbb->next_bb = sbblock;
5420                 link_bblock (cfg, prev_cbb, sbblock);
5421
5422                 /*
5423                  * Get rid of the begin and end bblocks if possible to aid local
5424                  * optimizations.
5425                  */
5426                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
5427
5428                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
5429                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
5430
5431                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
5432                         MonoBasicBlock *prev = ebblock->in_bb [0];
5433                         mono_merge_basic_blocks (cfg, prev, ebblock);
5434                         cfg->cbb = prev;
5435                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
5436                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
5437                                 cfg->cbb = prev_cbb;
5438                         }
5439                 } else {
5440                         /*
5441                          * Its possible that the rvar is set in some prev bblock, but not in others.
5442                          * (#1835).
5443                          */
5444                         if (rvar) {
5445                                 MonoBasicBlock *bb;
5446
5447                                 for (i = 0; i < ebblock->in_count; ++i) {
5448                                         bb = ebblock->in_bb [i];
5449
5450                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
5451                                                 cfg->cbb = bb;
5452
5453                                                 emit_init_rvar (cfg, rvar, fsig->ret);
5454                                         }
5455                                 }
5456                         }
5457
5458                         cfg->cbb = ebblock;
5459                 }
5460
5461                 if (rvar) {
5462                         /*
5463                          * If the inlined method contains only a throw, then the ret var is not
5464                          * set, so set it to a dummy value.
5465                          */
5466                         if (!ret_var_set)
5467                                 emit_init_rvar (cfg, rvar, fsig->ret);
5468
5469                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
5470                         *sp++ = ins;
5471                 }
5472                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
5473                 return costs + 1;
5474         } else {
5475                 if (cfg->verbose_level > 2)
5476                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
5477                 cfg->exception_type = MONO_EXCEPTION_NONE;
5478                 mono_loader_clear_error ();
5479
5480                 /* This gets rid of the newly added bblocks */
5481                 cfg->cbb = prev_cbb;
5482         }
5483         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
5484         return 0;
5485 }
5486
5487 /*
5488  * Some of these comments may well be out-of-date.
5489  * Design decisions: we do a single pass over the IL code (and we do bblock
5490  * splitting/merging in the few cases when it's required: a back jump to an IL
5491  * address that was not already seen as bblock starting point).
5492  * Code is validated as we go (full verification is still better left to metadata/verify.c).
5493  * Complex operations are decomposed in simpler ones right away. We need to let the
5494  * arch-specific code peek and poke inside this process somehow (except when the
5495  * optimizations can take advantage of the full semantic info of coarse opcodes).
5496  * All the opcodes of the form opcode.s are 'normalized' to opcode.
5497  * MonoInst->opcode initially is the IL opcode or some simplification of that
5498  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
5499  * opcode with value bigger than OP_LAST.
5500  * At this point the IR can be handed over to an interpreter, a dumb code generator
5501  * or to the optimizing code generator that will translate it to SSA form.
5502  *
5503  * Profiling directed optimizations.
5504  * We may compile by default with few or no optimizations and instrument the code
5505  * or the user may indicate what methods to optimize the most either in a config file
5506  * or through repeated runs where the compiler applies offline the optimizations to
5507  * each method and then decides if it was worth it.
5508  */
5509
5510 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
5511 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
5512 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
5513 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
5514 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
5515 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
5516 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
5517 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) {cfg->exception_ptr = klass; LOAD_ERROR;}
5518
5519 /* offset from br.s -> br like opcodes */
5520 #define BIG_BRANCH_OFFSET 13
5521
5522 static gboolean
5523 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
5524 {
5525         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
5526
5527         return b == NULL || b == bb;
5528 }
5529
5530 static int
5531 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
5532 {
5533         unsigned char *ip = start;
5534         unsigned char *target;
5535         int i;
5536         guint cli_addr;
5537         MonoBasicBlock *bblock;
5538         const MonoOpcode *opcode;
5539
5540         while (ip < end) {
5541                 cli_addr = ip - start;
5542                 i = mono_opcode_value ((const guint8 **)&ip, end);
5543                 if (i < 0)
5544                         UNVERIFIED;
5545                 opcode = &mono_opcodes [i];
5546                 switch (opcode->argument) {
5547                 case MonoInlineNone:
5548                         ip++;
5549                         break;
5550                 case MonoInlineString:
5551                 case MonoInlineType:
5552                 case MonoInlineField:
5553                 case MonoInlineMethod:
5554                 case MonoInlineTok:
5555                 case MonoInlineSig:
5556                 case MonoShortInlineR:
5557                 case MonoInlineI:
5558                         ip += 5;
5559                         break;
5560                 case MonoInlineVar:
5561                         ip += 3;
5562                         break;
5563                 case MonoShortInlineVar:
5564                 case MonoShortInlineI:
5565                         ip += 2;
5566                         break;
5567                 case MonoShortInlineBrTarget:
5568                         target = start + cli_addr + 2 + (signed char)ip [1];
5569                         GET_BBLOCK (cfg, bblock, target);
5570                         ip += 2;
5571                         if (ip < end)
5572                                 GET_BBLOCK (cfg, bblock, ip);
5573                         break;
5574                 case MonoInlineBrTarget:
5575                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
5576                         GET_BBLOCK (cfg, bblock, target);
5577                         ip += 5;
5578                         if (ip < end)
5579                                 GET_BBLOCK (cfg, bblock, ip);
5580                         break;
5581                 case MonoInlineSwitch: {
5582                         guint32 n = read32 (ip + 1);
5583                         guint32 j;
5584                         ip += 5;
5585                         cli_addr += 5 + 4 * n;
5586                         target = start + cli_addr;
5587                         GET_BBLOCK (cfg, bblock, target);
5588
5589                         for (j = 0; j < n; ++j) {
5590                                 target = start + cli_addr + (gint32)read32 (ip);
5591                                 GET_BBLOCK (cfg, bblock, target);
5592                                 ip += 4;
5593                         }
5594                         break;
5595                 }
5596                 case MonoInlineR:
5597                 case MonoInlineI8:
5598                         ip += 9;
5599                         break;
5600                 default:
5601                         g_assert_not_reached ();
5602                 }
5603
5604                 if (i == CEE_THROW) {
5605                         unsigned char *bb_start = ip - 1;
5606
5607                         /* Find the start of the bblock containing the throw */
5608                         bblock = NULL;
5609                         while ((bb_start >= start) && !bblock) {
5610                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
5611                                 bb_start --;
5612                         }
5613                         if (bblock)
5614                                 bblock->out_of_line = 1;
5615                 }
5616         }
5617         return 0;
5618 unverified:
5619 exception_exit:
5620         *pos = ip;
5621         return 1;
5622 }
5623
5624 static inline MonoMethod *
5625 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5626 {
5627         MonoMethod *method;
5628
5629         if (m->wrapper_type != MONO_WRAPPER_NONE) {
5630                 method = mono_method_get_wrapper_data (m, token);
5631                 if (context)
5632                         method = mono_class_inflate_generic_method (method, context);
5633         } else {
5634                 method = mono_get_method_full (m->klass->image, token, klass, context);
5635         }
5636
5637         return method;
5638 }
5639
5640 static inline MonoMethod *
5641 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5642 {
5643         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
5644
5645         if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
5646                 return NULL;
5647
5648         return method;
5649 }
5650
5651 static inline MonoClass*
5652 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
5653 {
5654         MonoClass *klass;
5655
5656         if (method->wrapper_type != MONO_WRAPPER_NONE) {
5657                 klass = mono_method_get_wrapper_data (method, token);
5658                 if (context)
5659                         klass = mono_class_inflate_generic_class (klass, context);
5660         } else {
5661                 klass = mono_class_get_full (method->klass->image, token, context);
5662         }
5663         if (klass)
5664                 mono_class_init (klass);
5665         return klass;
5666 }
5667
5668 static inline MonoMethodSignature*
5669 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
5670 {
5671         MonoMethodSignature *fsig;
5672
5673         if (method->wrapper_type != MONO_WRAPPER_NONE) {
5674                 MonoError error;
5675
5676                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
5677                 if (context) {
5678                         fsig = mono_inflate_generic_signature (fsig, context, &error);
5679                         // FIXME:
5680                         g_assert (mono_error_ok (&error));
5681                 }
5682         } else {
5683                 fsig = mono_metadata_parse_signature (method->klass->image, token);
5684         }
5685         return fsig;
5686 }
5687
5688 /*
5689  * Returns TRUE if the JIT should abort inlining because "callee"
5690  * is influenced by security attributes.
5691  */
5692 static
5693 gboolean check_linkdemand (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
5694 {
5695         guint32 result;
5696
5697         if ((cfg->method != caller) && mono_security_method_has_declsec (callee)) {
5698                 return TRUE;
5699         }
5700
5701         result = mono_declsec_linkdemand (cfg->domain, caller, callee);
5702         if (result == MONO_JIT_SECURITY_OK)
5703                 return FALSE;
5704
5705         if (result == MONO_JIT_LINKDEMAND_ECMA) {
5706                 /* Generate code to throw a SecurityException before the actual call/link */
5707                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
5708                 MonoInst *args [2];
5709
5710                 NEW_ICONST (cfg, args [0], 4);
5711                 NEW_METHODCONST (cfg, args [1], caller);
5712                 mono_emit_method_call (cfg, secman->linkdemandsecurityexception, args, NULL);
5713         } else if (cfg->exception_type == MONO_EXCEPTION_NONE) {
5714                  /* don't hide previous results */
5715                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_SECURITY_LINKDEMAND);
5716                 cfg->exception_data = result;
5717                 return TRUE;
5718         }
5719
5720         return FALSE;
5721 }
5722
5723 static MonoMethod*
5724 throw_exception (void)
5725 {
5726         static MonoMethod *method = NULL;
5727
5728         if (!method) {
5729                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
5730                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
5731         }
5732         g_assert (method);
5733         return method;
5734 }
5735
5736 static void
5737 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
5738 {
5739         MonoMethod *thrower = throw_exception ();
5740         MonoInst *args [1];
5741
5742         EMIT_NEW_PCONST (cfg, args [0], ex);
5743         mono_emit_method_call (cfg, thrower, args, NULL);
5744 }
5745
5746 /*
5747  * Return the original method is a wrapper is specified. We can only access
5748  * the custom attributes from the original method.
5749  */
5750 static MonoMethod*
5751 get_original_method (MonoMethod *method)
5752 {
5753         if (method->wrapper_type == MONO_WRAPPER_NONE)
5754                 return method;
5755
5756         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
5757         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
5758                 return NULL;
5759
5760         /* in other cases we need to find the original method */
5761         return mono_marshal_method_from_wrapper (method);
5762 }
5763
5764 static void
5765 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
5766                                           MonoBasicBlock *bblock, unsigned char *ip)
5767 {
5768         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5769         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
5770         if (ex)
5771                 emit_throw_exception (cfg, ex);
5772 }
5773
5774 static void
5775 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
5776                                          MonoBasicBlock *bblock, unsigned char *ip)
5777 {
5778         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5779         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
5780         if (ex)
5781                 emit_throw_exception (cfg, ex);
5782 }
5783
5784 /*
5785  * Check that the IL instructions at ip are the array initialization
5786  * sequence and return the pointer to the data and the size.
5787  */
5788 static const char*
5789 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
5790 {
5791         /*
5792          * newarr[System.Int32]
5793          * dup
5794          * ldtoken field valuetype ...
5795          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
5796          */
5797         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
5798                 guint32 token = read32 (ip + 7);
5799                 guint32 field_token = read32 (ip + 2);
5800                 guint32 field_index = field_token & 0xffffff;
5801                 guint32 rva;
5802                 const char *data_ptr;
5803                 int size = 0;
5804                 MonoMethod *cmethod;
5805                 MonoClass *dummy_class;
5806                 MonoClassField *field = mono_field_from_token (method->klass->image, field_token, &dummy_class, NULL);
5807                 int dummy_align;
5808
5809                 if (!field)
5810                         return NULL;
5811
5812                 *out_field_token = field_token;
5813
5814                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
5815                 if (!cmethod)
5816                         return NULL;
5817                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
5818                         return NULL;
5819                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
5820                 case MONO_TYPE_BOOLEAN:
5821                 case MONO_TYPE_I1:
5822                 case MONO_TYPE_U1:
5823                         size = 1; break;
5824                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
5825 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
5826                 case MONO_TYPE_CHAR:
5827                 case MONO_TYPE_I2:
5828                 case MONO_TYPE_U2:
5829                         size = 2; break;
5830                 case MONO_TYPE_I4:
5831                 case MONO_TYPE_U4:
5832                 case MONO_TYPE_R4:
5833                         size = 4; break;
5834                 case MONO_TYPE_R8:
5835 #ifdef ARM_FPU_FPA
5836                         return NULL; /* stupid ARM FP swapped format */
5837 #endif
5838                 case MONO_TYPE_I8:
5839                 case MONO_TYPE_U8:
5840                         size = 8; break;
5841 #endif
5842                 default:
5843                         return NULL;
5844                 }
5845                 size *= len;
5846                 if (size > mono_type_size (field->type, &dummy_align))
5847                     return NULL;
5848                 *out_size = size;
5849                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
5850                 if (!method->klass->image->dynamic) {
5851                         field_index = read32 (ip + 2) & 0xffffff;
5852                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
5853                         data_ptr = mono_image_rva_map (method->klass->image, rva);
5854                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
5855                         /* for aot code we do the lookup on load */
5856                         if (aot && data_ptr)
5857                                 return GUINT_TO_POINTER (rva);
5858                 } else {
5859                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
5860                         g_assert (!aot);
5861                         data_ptr = mono_field_get_data (field);
5862                 }
5863                 return data_ptr;
5864         }
5865         return NULL;
5866 }
5867
5868 static void
5869 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
5870 {
5871         char *method_fname = mono_method_full_name (method, TRUE);
5872         char *method_code;
5873         MonoMethodHeader *header = mono_method_get_header (method);
5874
5875         if (header->code_size == 0)
5876                 method_code = g_strdup ("method body is empty.");
5877         else
5878                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
5879         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
5880         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
5881         g_free (method_fname);
5882         g_free (method_code);
5883         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
5884 }
5885
5886 static void
5887 set_exception_object (MonoCompile *cfg, MonoException *exception)
5888 {
5889         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
5890         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr);
5891         cfg->exception_ptr = exception;
5892 }
5893
5894 static void
5895 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
5896 {
5897         MonoInst *ins;
5898         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
5899         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
5900                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
5901                 /* Optimize reg-reg moves away */
5902                 /*
5903                  * Can't optimize other opcodes, since sp[0] might point to
5904                  * the last ins of a decomposed opcode.
5905                  */
5906                 sp [0]->dreg = (cfg)->locals [n]->dreg;
5907         } else {
5908                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
5909         }
5910 }
5911
5912 /*
5913  * ldloca inhibits many optimizations so try to get rid of it in common
5914  * cases.
5915  */
5916 static inline unsigned char *
5917 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
5918 {
5919         int local, token;
5920         MonoClass *klass;
5921
5922         if (size == 1) {
5923                 local = ip [1];
5924                 ip += 2;
5925         } else {
5926                 local = read16 (ip + 2);
5927                 ip += 4;
5928         }
5929
5930         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
5931                 gboolean skip = FALSE;
5932
5933                 /* From the INITOBJ case */
5934                 token = read32 (ip + 2);
5935                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
5936                 CHECK_TYPELOAD (klass);
5937                 if (mini_type_is_reference (cfg, &klass->byval_arg)) {
5938                         MONO_EMIT_NEW_PCONST (cfg, cfg->locals [local]->dreg, NULL);
5939                 } else if (MONO_TYPE_ISSTRUCT (&klass->byval_arg)) {
5940                         MONO_EMIT_NEW_VZERO (cfg, cfg->locals [local]->dreg, klass);
5941                 } else {
5942                         skip = TRUE;
5943                 }
5944
5945                 if (!skip)
5946                         return ip + 6;
5947         }
5948 load_error:
5949         return NULL;
5950 }
5951
5952 static gboolean
5953 is_exception_class (MonoClass *class)
5954 {
5955         while (class) {
5956                 if (class == mono_defaults.exception_class)
5957                         return TRUE;
5958                 class = class->parent;
5959         }
5960         return FALSE;
5961 }
5962
5963 /*
5964  * is_jit_optimizer_disabled:
5965  *
5966  *   Determine whenever M's assembly has a DebuggableAttribute with the
5967  * IsJITOptimizerDisabled flag set.
5968  */
5969 static gboolean
5970 is_jit_optimizer_disabled (MonoMethod *m)
5971 {
5972         MonoAssembly *ass = m->klass->image->assembly;
5973         MonoCustomAttrInfo* attrs;
5974         static MonoClass *klass;
5975         int i;
5976         gboolean val = FALSE;
5977
5978         g_assert (ass);
5979         if (ass->jit_optimizer_disabled_inited)
5980                 return ass->jit_optimizer_disabled;
5981
5982         if (!klass)
5983                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
5984         if (!klass) {
5985                 /* Linked away */
5986                 ass->jit_optimizer_disabled = FALSE;
5987                 mono_memory_barrier ();
5988                 ass->jit_optimizer_disabled_inited = TRUE;
5989                 return FALSE;
5990         }
5991
5992         attrs = mono_custom_attrs_from_assembly (ass);
5993         if (attrs) {
5994                 for (i = 0; i < attrs->num_attrs; ++i) {
5995                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
5996                         const gchar *p;
5997                         int len;
5998                         MonoMethodSignature *sig;
5999
6000                         if (!attr->ctor || attr->ctor->klass != klass)
6001                                 continue;
6002                         /* Decode the attribute. See reflection.c */
6003                         len = attr->data_size;
6004                         p = (const char*)attr->data;
6005                         g_assert (read16 (p) == 0x0001);
6006                         p += 2;
6007
6008                         // FIXME: Support named parameters
6009                         sig = mono_method_signature (attr->ctor);
6010                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6011                                 continue;
6012                         /* Two boolean arguments */
6013                         p ++;
6014                         val = *p;
6015                 }
6016                 mono_custom_attrs_free (attrs);
6017         }
6018
6019         ass->jit_optimizer_disabled = val;
6020         mono_memory_barrier ();
6021         ass->jit_optimizer_disabled_inited = TRUE;
6022
6023         return val;
6024 }
6025
6026 static gboolean
6027 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig)
6028 {
6029         gboolean supported_tail_call;
6030         int i;
6031
6032 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6033         supported_tail_call = MONO_ARCH_USE_OP_TAIL_CALL (mono_method_signature (method), mono_method_signature (cmethod));
6034 #else
6035         supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
6036 #endif
6037
6038         for (i = 0; i < fsig->param_count; ++i) {
6039                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6040                         /* These can point to the current method's stack */
6041                         supported_tail_call = FALSE;
6042         }
6043         if (fsig->hasthis && cmethod->klass->valuetype)
6044                 /* this might point to the current method's stack */
6045                 supported_tail_call = FALSE;
6046         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6047                 supported_tail_call = FALSE;
6048         if (cfg->method->save_lmf)
6049                 supported_tail_call = FALSE;
6050         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6051                 supported_tail_call = FALSE;
6052
6053         /* Debugging support */
6054 #if 0
6055         if (supported_tail_call) {
6056                 if (!mono_debug_count ())
6057                         supported_tail_call = FALSE;
6058         }
6059 #endif
6060
6061         return supported_tail_call;
6062 }
6063
6064 /* the JIT intercepts ldflda instructions to the tlsdata field in ThreadLocal<T> and redirects
6065  * it to the thread local value based on the tls_offset field. Every other kind of access to
6066  * the field causes an assert.
6067  */
6068 static gboolean
6069 is_magic_tls_access (MonoClassField *field)
6070 {
6071         if (strcmp (field->name, "tlsdata"))
6072                 return FALSE;
6073         if (strcmp (field->parent->name, "ThreadLocal`1"))
6074                 return FALSE;
6075         return field->parent->image == mono_defaults.corlib;
6076 }
6077
6078 /* emits the code needed to access a managed tls var (like ThreadStatic)
6079  * with the value of the tls offset in offset_reg. thread_ins represents the MonoInternalThread
6080  * pointer for the current thread.
6081  * Returns the MonoInst* representing the address of the tls var.
6082  */
6083 static MonoInst*
6084 emit_managed_static_data_access (MonoCompile *cfg, MonoInst *thread_ins, int offset_reg)
6085 {
6086         MonoInst *addr;
6087         int static_data_reg, array_reg, dreg;
6088         int offset2_reg, idx_reg;
6089         // inlined access to the tls data
6090         // idx = (offset >> 24) - 1;
6091         // return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
6092         static_data_reg = alloc_ireg (cfg);
6093         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
6094         idx_reg = alloc_ireg (cfg);
6095         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
6096         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
6097         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
6098         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
6099         array_reg = alloc_ireg (cfg);
6100         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
6101         offset2_reg = alloc_ireg (cfg);
6102         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
6103         dreg = alloc_ireg (cfg);
6104         EMIT_NEW_BIALU (cfg, addr, OP_PADD, dreg, array_reg, offset2_reg);
6105         return addr;
6106 }
6107
6108 /*
6109  * redirect access to the tlsdata field to the tls var given by the tls_offset field.
6110  * this address is cached per-method in cached_tls_addr.
6111  */
6112 static MonoInst*
6113 create_magic_tls_access (MonoCompile *cfg, MonoClassField *tls_field, MonoInst **cached_tls_addr, MonoInst *thread_local)
6114 {
6115         MonoInst *load, *addr, *temp, *store, *thread_ins;
6116         MonoClassField *offset_field;
6117
6118         if (*cached_tls_addr) {
6119                 EMIT_NEW_TEMPLOAD (cfg, addr, (*cached_tls_addr)->inst_c0);
6120                 return addr;
6121         }
6122         thread_ins = mono_get_thread_intrinsic (cfg);
6123         offset_field = mono_class_get_field_from_name (tls_field->parent, "tls_offset");
6124
6125         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, offset_field->type, thread_local->dreg, offset_field->offset);
6126         if (thread_ins) {
6127                 MONO_ADD_INS (cfg->cbb, thread_ins);
6128         } else {
6129                 MonoMethod *thread_method;
6130                 thread_method = mono_class_get_method_from_name (mono_get_thread_class(), "CurrentInternalThread_internal", 0);
6131                 thread_ins = mono_emit_method_call (cfg, thread_method, NULL, NULL);
6132         }
6133         addr = emit_managed_static_data_access (cfg, thread_ins, load->dreg);
6134         addr->klass = mono_class_from_mono_type (tls_field->type);
6135         addr->type = STACK_MP;
6136         *cached_tls_addr = temp = mono_compile_create_var (cfg, type_from_stack_type (addr), OP_LOCAL);
6137         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, addr);
6138
6139         EMIT_NEW_TEMPLOAD (cfg, addr, temp->inst_c0);
6140         return addr;
6141 }
6142
6143 /*
6144  * mono_method_to_ir:
6145  *
6146  *   Translate the .net IL into linear IR.
6147  */
6148 int
6149 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
6150                    MonoInst *return_var, GList *dont_inline, MonoInst **inline_args,
6151                    guint inline_offset, gboolean is_virtual_call)
6152 {
6153         MonoError error;
6154         MonoInst *ins, **sp, **stack_start;
6155         MonoBasicBlock *bblock, *tblock = NULL, *init_localsbb = NULL;
6156         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
6157         MonoMethod *cmethod, *method_definition;
6158         MonoInst **arg_array;
6159         MonoMethodHeader *header;
6160         MonoImage *image;
6161         guint32 token, ins_flag;
6162         MonoClass *klass;
6163         MonoClass *constrained_call = NULL;
6164         unsigned char *ip, *end, *target, *err_pos;
6165         static double r8_0 = 0.0;
6166         MonoMethodSignature *sig;
6167         MonoGenericContext *generic_context = NULL;
6168         MonoGenericContainer *generic_container = NULL;
6169         MonoType **param_types;
6170         int i, n, start_new_bblock, dreg;
6171         int num_calls = 0, inline_costs = 0;
6172         int breakpoint_id = 0;
6173         guint num_args;
6174         MonoBoolean security, pinvoke;
6175         MonoSecurityManager* secman = NULL;
6176         MonoDeclSecurityActions actions;
6177         GSList *class_inits = NULL;
6178         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
6179         int context_used;
6180         gboolean init_locals, seq_points, skip_dead_blocks;
6181         gboolean disable_inline, sym_seq_points = FALSE;
6182         MonoInst *cached_tls_addr = NULL;
6183         MonoDebugMethodInfo *minfo;
6184         MonoBitSet *seq_point_locs = NULL;
6185
6186         disable_inline = is_jit_optimizer_disabled (method);
6187
6188         /* serialization and xdomain stuff may need access to private fields and methods */
6189         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
6190         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
6191         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
6192         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
6193         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
6194         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
6195
6196         dont_verify |= mono_security_smcs_hack_enabled ();
6197
6198         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
6199         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
6200         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
6201         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
6202         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
6203
6204         image = method->klass->image;
6205         header = mono_method_get_header (method);
6206         if (!header) {
6207                 MonoLoaderError *error;
6208
6209                 if ((error = mono_loader_get_last_error ())) {
6210                         mono_cfg_set_exception (cfg, error->exception_type);
6211                 } else {
6212                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
6213                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
6214                 }
6215                 goto exception_exit;
6216         }
6217         generic_container = mono_method_get_generic_container (method);
6218         sig = mono_method_signature (method);
6219         num_args = sig->hasthis + sig->param_count;
6220         ip = (unsigned char*)header->code;
6221         cfg->cil_start = ip;
6222         end = ip + header->code_size;
6223         cfg->stat_cil_code_size += header->code_size;
6224         init_locals = header->init_locals;
6225
6226         seq_points = cfg->gen_seq_points && cfg->method == method;
6227 #ifdef PLATFORM_ANDROID
6228         seq_points &= cfg->method->wrapper_type == MONO_WRAPPER_NONE;
6229 #endif
6230
6231         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
6232                 /* We could hit a seq point before attaching to the JIT (#8338) */
6233                 seq_points = FALSE;
6234         }
6235
6236         if (cfg->gen_seq_points && cfg->method == method) {
6237                 minfo = mono_debug_lookup_method (method);
6238                 if (minfo) {
6239                         int i, n_il_offsets;
6240                         int *il_offsets;
6241                         int *line_numbers;
6242
6243                         mono_debug_symfile_get_line_numbers_full (minfo, NULL, NULL, &n_il_offsets, &il_offsets, &line_numbers, NULL, NULL);
6244                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
6245                         sym_seq_points = TRUE;
6246                         for (i = 0; i < n_il_offsets; ++i) {
6247                                 if (il_offsets [i] < header->code_size)
6248                                         mono_bitset_set_fast (seq_point_locs, il_offsets [i]);
6249                         }
6250                 }
6251         }
6252
6253         /*
6254          * Methods without init_locals set could cause asserts in various passes
6255          * (#497220).
6256          */
6257         init_locals = TRUE;
6258
6259         method_definition = method;
6260         while (method_definition->is_inflated) {
6261                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
6262                 method_definition = imethod->declaring;
6263         }
6264
6265         /* SkipVerification is not allowed if core-clr is enabled */
6266         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
6267                 dont_verify = TRUE;
6268                 dont_verify_stloc = TRUE;
6269         }
6270
6271         if (mono_debug_using_mono_debugger ())
6272                 cfg->keep_cil_nops = TRUE;
6273
6274         if (sig->is_inflated)
6275                 generic_context = mono_method_get_context (method);
6276         else if (generic_container)
6277                 generic_context = &generic_container->context;
6278         cfg->generic_context = generic_context;
6279
6280         if (!cfg->generic_sharing_context)
6281                 g_assert (!sig->has_type_parameters);
6282
6283         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
6284                 g_assert (method->is_inflated);
6285                 g_assert (mono_method_get_context (method)->method_inst);
6286         }
6287         if (method->is_inflated && mono_method_get_context (method)->method_inst)
6288                 g_assert (sig->generic_param_count);
6289
6290         if (cfg->method == method) {
6291                 cfg->real_offset = 0;
6292         } else {
6293                 cfg->real_offset = inline_offset;
6294         }
6295
6296         cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
6297         cfg->cil_offset_to_bb_len = header->code_size;
6298
6299         cfg->current_method = method;
6300
6301         if (cfg->verbose_level > 2)
6302                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
6303
6304         param_types = mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
6305         if (sig->hasthis)
6306                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
6307         for (n = 0; n < sig->param_count; ++n)
6308                 param_types [n + sig->hasthis] = sig->params [n];
6309         cfg->arg_types = param_types;
6310
6311         dont_inline = g_list_prepend (dont_inline, method);
6312         if (cfg->method == method) {
6313
6314                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
6315                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
6316
6317                 /* ENTRY BLOCK */
6318                 NEW_BBLOCK (cfg, start_bblock);
6319                 cfg->bb_entry = start_bblock;
6320                 start_bblock->cil_code = NULL;
6321                 start_bblock->cil_length = 0;
6322 #if defined(__native_client_codegen__)
6323                 MONO_INST_NEW (cfg, ins, OP_NACL_GC_SAFE_POINT);
6324                 ins->dreg = alloc_dreg (cfg, STACK_I4);
6325                 MONO_ADD_INS (start_bblock, ins);
6326 #endif
6327
6328                 /* EXIT BLOCK */
6329                 NEW_BBLOCK (cfg, end_bblock);
6330                 cfg->bb_exit = end_bblock;
6331                 end_bblock->cil_code = NULL;
6332                 end_bblock->cil_length = 0;
6333                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
6334                 g_assert (cfg->num_bblocks == 2);
6335
6336                 arg_array = cfg->args;
6337
6338                 if (header->num_clauses) {
6339                         cfg->spvars = g_hash_table_new (NULL, NULL);
6340                         cfg->exvars = g_hash_table_new (NULL, NULL);
6341                 }
6342                 /* handle exception clauses */
6343                 for (i = 0; i < header->num_clauses; ++i) {
6344                         MonoBasicBlock *try_bb;
6345                         MonoExceptionClause *clause = &header->clauses [i];
6346                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
6347                         try_bb->real_offset = clause->try_offset;
6348                         try_bb->try_start = TRUE;
6349                         try_bb->region = ((i + 1) << 8) | clause->flags;
6350                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
6351                         tblock->real_offset = clause->handler_offset;
6352                         tblock->flags |= BB_EXCEPTION_HANDLER;
6353
6354                         link_bblock (cfg, try_bb, tblock);
6355
6356                         if (*(ip + clause->handler_offset) == CEE_POP)
6357                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
6358
6359                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
6360                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
6361                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
6362                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
6363                                 MONO_ADD_INS (tblock, ins);
6364
6365                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY) {
6366                                         /* finally clauses already have a seq point */
6367                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
6368                                         MONO_ADD_INS (tblock, ins);
6369                                 }
6370
6371                                 /* todo: is a fault block unsafe to optimize? */
6372                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
6373                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
6374                         }
6375
6376
6377                         /*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);
6378                           while (p < end) {
6379                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
6380                           }*/
6381                         /* catch and filter blocks get the exception object on the stack */
6382                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
6383                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
6384                                 MonoInst *dummy_use;
6385
6386                                 /* mostly like handle_stack_args (), but just sets the input args */
6387                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
6388                                 tblock->in_scount = 1;
6389                                 tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
6390                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
6391
6392                                 /*
6393                                  * Add a dummy use for the exvar so its liveness info will be
6394                                  * correct.
6395                                  */
6396                                 cfg->cbb = tblock;
6397                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
6398
6399                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
6400                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
6401                                         tblock->flags |= BB_EXCEPTION_HANDLER;
6402                                         tblock->real_offset = clause->data.filter_offset;
6403                                         tblock->in_scount = 1;
6404                                         tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
6405                                         /* The filter block shares the exvar with the handler block */
6406                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
6407                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
6408                                         MONO_ADD_INS (tblock, ins);
6409                                 }
6410                         }
6411
6412                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
6413                                         clause->data.catch_class &&
6414                                         cfg->generic_sharing_context &&
6415                                         mono_class_check_context_used (clause->data.catch_class)) {
6416                                 /*
6417                                  * In shared generic code with catch
6418                                  * clauses containing type variables
6419                                  * the exception handling code has to
6420                                  * be able to get to the rgctx.
6421                                  * Therefore we have to make sure that
6422                                  * the vtable/mrgctx argument (for
6423                                  * static or generic methods) or the
6424                                  * "this" argument (for non-static
6425                                  * methods) are live.
6426                                  */
6427                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
6428                                                 mini_method_get_context (method)->method_inst ||
6429                                                 method->klass->valuetype) {
6430                                         mono_get_vtable_var (cfg);
6431                                 } else {
6432                                         MonoInst *dummy_use;
6433
6434                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
6435                                 }
6436                         }
6437                 }
6438         } else {
6439                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
6440                 cfg->cbb = start_bblock;
6441                 cfg->args = arg_array;
6442                 mono_save_args (cfg, sig, inline_args);
6443         }
6444
6445         /* FIRST CODE BLOCK */
6446         NEW_BBLOCK (cfg, bblock);
6447         bblock->cil_code = ip;
6448         cfg->cbb = bblock;
6449         cfg->ip = ip;
6450
6451         ADD_BBLOCK (cfg, bblock);
6452
6453         if (cfg->method == method) {
6454                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
6455                 if (breakpoint_id && (mono_debug_format != MONO_DEBUG_FORMAT_DEBUGGER)) {
6456                         MONO_INST_NEW (cfg, ins, OP_BREAK);
6457                         MONO_ADD_INS (bblock, ins);
6458                 }
6459         }
6460
6461         if (mono_security_cas_enabled ())
6462                 secman = mono_security_manager_get_methods ();
6463
6464         security = (secman && mono_security_method_has_declsec (method));
6465         /* at this point having security doesn't mean we have any code to generate */
6466         if (security && (cfg->method == method)) {
6467                 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
6468                  * And we do not want to enter the next section (with allocation) if we
6469                  * have nothing to generate */
6470                 security = mono_declsec_get_demands (method, &actions);
6471         }
6472
6473         /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
6474         pinvoke = (secman && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE));
6475         if (pinvoke) {
6476                 MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
6477                 if (wrapped && (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
6478                         MonoCustomAttrInfo* custom = mono_custom_attrs_from_method (wrapped);
6479
6480                         /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
6481                         if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
6482                                 pinvoke = FALSE;
6483                         }
6484                         if (custom)
6485                                 mono_custom_attrs_free (custom);
6486
6487                         if (pinvoke) {
6488                                 custom = mono_custom_attrs_from_class (wrapped->klass);
6489                                 if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
6490                                         pinvoke = FALSE;
6491                                 }
6492                                 if (custom)
6493                                         mono_custom_attrs_free (custom);
6494                         }
6495                 } else {
6496                         /* not a P/Invoke after all */
6497                         pinvoke = FALSE;
6498                 }
6499         }
6500
6501         if ((init_locals || (cfg->method == method && (cfg->opt & MONO_OPT_SHARED))) || cfg->compile_aot || security || pinvoke) {
6502                 /* we use a separate basic block for the initialization code */
6503                 NEW_BBLOCK (cfg, init_localsbb);
6504                 cfg->bb_init = init_localsbb;
6505                 init_localsbb->real_offset = cfg->real_offset;
6506                 start_bblock->next_bb = init_localsbb;
6507                 init_localsbb->next_bb = bblock;
6508                 link_bblock (cfg, start_bblock, init_localsbb);
6509                 link_bblock (cfg, init_localsbb, bblock);
6510
6511                 cfg->cbb = init_localsbb;
6512         } else {
6513                 start_bblock->next_bb = bblock;
6514                 link_bblock (cfg, start_bblock, bblock);
6515         }
6516
6517         /* at this point we know, if security is TRUE, that some code needs to be generated */
6518         if (security && (cfg->method == method)) {
6519                 MonoInst *args [2];
6520
6521                 cfg->stat_cas_demand_generation++;
6522
6523                 if (actions.demand.blob) {
6524                         /* Add code for SecurityAction.Demand */
6525                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demand);
6526                         EMIT_NEW_ICONST (cfg, args [1], actions.demand.size);
6527                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
6528                         mono_emit_method_call (cfg, secman->demand, args, NULL);
6529                 }
6530                 if (actions.noncasdemand.blob) {
6531                         /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
6532                         /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
6533                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.noncasdemand);
6534                         EMIT_NEW_ICONST (cfg, args [1], actions.noncasdemand.size);
6535                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
6536                         mono_emit_method_call (cfg, secman->demand, args, NULL);
6537                 }
6538                 if (actions.demandchoice.blob) {
6539                         /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
6540                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demandchoice);
6541                         EMIT_NEW_ICONST (cfg, args [1], actions.demandchoice.size);
6542                         /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
6543                         mono_emit_method_call (cfg, secman->demandchoice, args, NULL);
6544                 }
6545         }
6546
6547         /* we must Demand SecurityPermission.Unmanaged before p/invoking */
6548         if (pinvoke) {
6549                 mono_emit_method_call (cfg, secman->demandunmanaged, NULL, NULL);
6550         }
6551
6552         if (mono_security_core_clr_enabled ()) {
6553                 /* check if this is native code, e.g. an icall or a p/invoke */
6554                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
6555                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
6556                         if (wrapped) {
6557                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
6558                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
6559
6560                                 /* if this ia a native call then it can only be JITted from platform code */
6561                                 if ((icall || pinvk) && method->klass && method->klass->image) {
6562                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
6563                                                 MonoException *ex = icall ? mono_get_exception_security () :
6564                                                         mono_get_exception_method_access ();
6565                                                 emit_throw_exception (cfg, ex);
6566                                         }
6567                                 }
6568                         }
6569                 }
6570         }
6571
6572         if (header->code_size == 0)
6573                 UNVERIFIED;
6574
6575         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
6576                 ip = err_pos;
6577                 UNVERIFIED;
6578         }
6579
6580         if (cfg->method == method)
6581                 mono_debug_init_method (cfg, bblock, breakpoint_id);
6582
6583         for (n = 0; n < header->num_locals; ++n) {
6584                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
6585                         UNVERIFIED;
6586         }
6587         class_inits = NULL;
6588
6589         /* We force the vtable variable here for all shared methods
6590            for the possibility that they might show up in a stack
6591            trace where their exact instantiation is needed. */
6592         if (cfg->generic_sharing_context && method == cfg->method) {
6593                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
6594                                 mini_method_get_context (method)->method_inst ||
6595                                 method->klass->valuetype) {
6596                         mono_get_vtable_var (cfg);
6597                 } else {
6598                         /* FIXME: Is there a better way to do this?
6599                            We need the variable live for the duration
6600                            of the whole method. */
6601                         cfg->args [0]->flags |= MONO_INST_INDIRECT;
6602                 }
6603         }
6604
6605         /* add a check for this != NULL to inlined methods */
6606         if (is_virtual_call) {
6607                 MonoInst *arg_ins;
6608
6609                 NEW_ARGLOAD (cfg, arg_ins, 0);
6610                 MONO_ADD_INS (cfg->cbb, arg_ins);
6611                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
6612         }
6613
6614         skip_dead_blocks = !dont_verify;
6615         if (skip_dead_blocks) {
6616                 original_bb = bb = mono_basic_block_split (method, &error);
6617                 if (!mono_error_ok (&error)) {
6618                         mono_error_cleanup (&error);
6619                         UNVERIFIED;
6620                 }
6621                 g_assert (bb);
6622         }
6623
6624         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
6625         stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
6626
6627         ins_flag = 0;
6628         start_new_bblock = 0;
6629         cfg->cbb = bblock;
6630         while (ip < end) {
6631                 if (cfg->method == method)
6632                         cfg->real_offset = ip - header->code;
6633                 else
6634                         cfg->real_offset = inline_offset;
6635                 cfg->ip = ip;
6636
6637                 context_used = 0;
6638
6639                 if (start_new_bblock) {
6640                         bblock->cil_length = ip - bblock->cil_code;
6641                         if (start_new_bblock == 2) {
6642                                 g_assert (ip == tblock->cil_code);
6643                         } else {
6644                                 GET_BBLOCK (cfg, tblock, ip);
6645                         }
6646                         bblock->next_bb = tblock;
6647                         bblock = tblock;
6648                         cfg->cbb = bblock;
6649                         start_new_bblock = 0;
6650                         for (i = 0; i < bblock->in_scount; ++i) {
6651                                 if (cfg->verbose_level > 3)
6652                                         printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
6653                                 EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
6654                                 *sp++ = ins;
6655                         }
6656                         if (class_inits)
6657                                 g_slist_free (class_inits);
6658                         class_inits = NULL;
6659                 } else {
6660                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != bblock)) {
6661                                 link_bblock (cfg, bblock, tblock);
6662                                 if (sp != stack_start) {
6663                                         handle_stack_args (cfg, stack_start, sp - stack_start);
6664                                         sp = stack_start;
6665                                         CHECK_UNVERIFIABLE (cfg);
6666                                 }
6667                                 bblock->next_bb = tblock;
6668                                 bblock = tblock;
6669                                 cfg->cbb = bblock;
6670                                 for (i = 0; i < bblock->in_scount; ++i) {
6671                                         if (cfg->verbose_level > 3)
6672                                                 printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
6673                                         EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
6674                                         *sp++ = ins;
6675                                 }
6676                                 g_slist_free (class_inits);
6677                                 class_inits = NULL;
6678                         }
6679                 }
6680
6681                 if (skip_dead_blocks) {
6682                         int ip_offset = ip - header->code;
6683
6684                         if (ip_offset == bb->end)
6685                                 bb = bb->next;
6686
6687                         if (bb->dead) {
6688                                 int op_size = mono_opcode_size (ip, end);
6689                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
6690
6691                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
6692
6693                                 if (ip_offset + op_size == bb->end) {
6694                                         MONO_INST_NEW (cfg, ins, OP_NOP);
6695                                         MONO_ADD_INS (bblock, ins);
6696                                         start_new_bblock = 1;
6697                                 }
6698
6699                                 ip += op_size;
6700                                 continue;
6701                         }
6702                 }
6703                 /*
6704                  * Sequence points are points where the debugger can place a breakpoint.
6705                  * Currently, we generate these automatically at points where the IL
6706                  * stack is empty.
6707                  */
6708                 if (seq_points && ((sp == stack_start) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
6709                         /*
6710                          * Make methods interruptable at the beginning, and at the targets of
6711                          * backward branches.
6712                          * Also, do this at the start of every bblock in methods with clauses too,
6713                          * to be able to handle instructions with inprecise control flow like
6714                          * throw/endfinally.
6715                          * Backward branches are handled at the end of method-to-ir ().
6716                          */
6717                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
6718
6719                         /* Avoid sequence points on empty IL like .volatile */
6720                         // FIXME: Enable this
6721                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
6722                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
6723                         MONO_ADD_INS (cfg->cbb, ins);
6724                 }
6725
6726                 bblock->real_offset = cfg->real_offset;
6727
6728                 if ((cfg->method == method) && cfg->coverage_info) {
6729                         guint32 cil_offset = ip - header->code;
6730                         cfg->coverage_info->data [cil_offset].cil_code = ip;
6731
6732                         /* TODO: Use an increment here */
6733 #if defined(TARGET_X86)
6734                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
6735                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
6736                         ins->inst_imm = 1;
6737                         MONO_ADD_INS (cfg->cbb, ins);
6738 #else
6739                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
6740                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
6741 #endif
6742                 }
6743
6744                 if (cfg->verbose_level > 3)
6745                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
6746
6747                 switch (*ip) {
6748                 case CEE_NOP:
6749                         if (seq_points && !sym_seq_points && sp != stack_start) {
6750                                 /*
6751                                  * The C# compiler uses these nops to notify the JIT that it should
6752                                  * insert seq points.
6753                                  */
6754                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
6755                                 MONO_ADD_INS (cfg->cbb, ins);
6756                         }
6757                         if (cfg->keep_cil_nops)
6758                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
6759                         else
6760                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6761                         ip++;
6762                         MONO_ADD_INS (bblock, ins);
6763                         break;
6764                 case CEE_BREAK:
6765                         if (should_insert_brekpoint (cfg->method)) {
6766                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6767                         } else {
6768                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6769                         }
6770                         ip++;
6771                         MONO_ADD_INS (bblock, ins);
6772                         break;
6773                 case CEE_LDARG_0:
6774                 case CEE_LDARG_1:
6775                 case CEE_LDARG_2:
6776                 case CEE_LDARG_3:
6777                         CHECK_STACK_OVF (1);
6778                         n = (*ip)-CEE_LDARG_0;
6779                         CHECK_ARG (n);
6780                         EMIT_NEW_ARGLOAD (cfg, ins, n);
6781                         ip++;
6782                         *sp++ = ins;
6783                         break;
6784                 case CEE_LDLOC_0:
6785                 case CEE_LDLOC_1:
6786                 case CEE_LDLOC_2:
6787                 case CEE_LDLOC_3:
6788                         CHECK_STACK_OVF (1);
6789                         n = (*ip)-CEE_LDLOC_0;
6790                         CHECK_LOCAL (n);
6791                         EMIT_NEW_LOCLOAD (cfg, ins, n);
6792                         ip++;
6793                         *sp++ = ins;
6794                         break;
6795                 case CEE_STLOC_0:
6796                 case CEE_STLOC_1:
6797                 case CEE_STLOC_2:
6798                 case CEE_STLOC_3: {
6799                         CHECK_STACK (1);
6800                         n = (*ip)-CEE_STLOC_0;
6801                         CHECK_LOCAL (n);
6802                         --sp;
6803                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
6804                                 UNVERIFIED;
6805                         emit_stloc_ir (cfg, sp, header, n);
6806                         ++ip;
6807                         inline_costs += 1;
6808                         break;
6809                         }
6810                 case CEE_LDARG_S:
6811                         CHECK_OPSIZE (2);
6812                         CHECK_STACK_OVF (1);
6813                         n = ip [1];
6814                         CHECK_ARG (n);
6815                         EMIT_NEW_ARGLOAD (cfg, ins, n);
6816                         *sp++ = ins;
6817                         ip += 2;
6818                         break;
6819                 case CEE_LDARGA_S:
6820                         CHECK_OPSIZE (2);
6821                         CHECK_STACK_OVF (1);
6822                         n = ip [1];
6823                         CHECK_ARG (n);
6824                         NEW_ARGLOADA (cfg, ins, n);
6825                         MONO_ADD_INS (cfg->cbb, ins);
6826                         *sp++ = ins;
6827                         ip += 2;
6828                         break;
6829                 case CEE_STARG_S:
6830                         CHECK_OPSIZE (2);
6831                         CHECK_STACK (1);
6832                         --sp;
6833                         n = ip [1];
6834                         CHECK_ARG (n);
6835                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
6836                                 UNVERIFIED;
6837                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
6838                         ip += 2;
6839                         break;
6840                 case CEE_LDLOC_S:
6841                         CHECK_OPSIZE (2);
6842                         CHECK_STACK_OVF (1);
6843                         n = ip [1];
6844                         CHECK_LOCAL (n);
6845                         EMIT_NEW_LOCLOAD (cfg, ins, n);
6846                         *sp++ = ins;
6847                         ip += 2;
6848                         break;
6849                 case CEE_LDLOCA_S: {
6850                         unsigned char *tmp_ip;
6851                         CHECK_OPSIZE (2);
6852                         CHECK_STACK_OVF (1);
6853                         CHECK_LOCAL (ip [1]);
6854
6855                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
6856                                 ip = tmp_ip;
6857                                 inline_costs += 1;
6858                                 break;
6859                         }
6860
6861                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
6862                         *sp++ = ins;
6863                         ip += 2;
6864                         break;
6865                 }
6866                 case CEE_STLOC_S:
6867                         CHECK_OPSIZE (2);
6868                         CHECK_STACK (1);
6869                         --sp;
6870                         CHECK_LOCAL (ip [1]);
6871                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
6872                                 UNVERIFIED;
6873                         emit_stloc_ir (cfg, sp, header, ip [1]);
6874                         ip += 2;
6875                         inline_costs += 1;
6876                         break;
6877                 case CEE_LDNULL:
6878                         CHECK_STACK_OVF (1);
6879                         EMIT_NEW_PCONST (cfg, ins, NULL);
6880                         ins->type = STACK_OBJ;
6881                         ++ip;
6882                         *sp++ = ins;
6883                         break;
6884                 case CEE_LDC_I4_M1:
6885                         CHECK_STACK_OVF (1);
6886                         EMIT_NEW_ICONST (cfg, ins, -1);
6887                         ++ip;
6888                         *sp++ = ins;
6889                         break;
6890                 case CEE_LDC_I4_0:
6891                 case CEE_LDC_I4_1:
6892                 case CEE_LDC_I4_2:
6893                 case CEE_LDC_I4_3:
6894                 case CEE_LDC_I4_4:
6895                 case CEE_LDC_I4_5:
6896                 case CEE_LDC_I4_6:
6897                 case CEE_LDC_I4_7:
6898                 case CEE_LDC_I4_8:
6899                         CHECK_STACK_OVF (1);
6900                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
6901                         ++ip;
6902                         *sp++ = ins;
6903                         break;
6904                 case CEE_LDC_I4_S:
6905                         CHECK_OPSIZE (2);
6906                         CHECK_STACK_OVF (1);
6907                         ++ip;
6908                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
6909                         ++ip;
6910                         *sp++ = ins;
6911                         break;
6912                 case CEE_LDC_I4:
6913                         CHECK_OPSIZE (5);
6914                         CHECK_STACK_OVF (1);
6915                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
6916                         ip += 5;
6917                         *sp++ = ins;
6918                         break;
6919                 case CEE_LDC_I8:
6920                         CHECK_OPSIZE (9);
6921                         CHECK_STACK_OVF (1);
6922                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
6923                         ins->type = STACK_I8;
6924                         ins->dreg = alloc_dreg (cfg, STACK_I8);
6925                         ++ip;
6926                         ins->inst_l = (gint64)read64 (ip);
6927                         MONO_ADD_INS (bblock, ins);
6928                         ip += 8;
6929                         *sp++ = ins;
6930                         break;
6931                 case CEE_LDC_R4: {
6932                         float *f;
6933                         gboolean use_aotconst = FALSE;
6934
6935 #ifdef TARGET_POWERPC
6936                         /* FIXME: Clean this up */
6937                         if (cfg->compile_aot)
6938                                 use_aotconst = TRUE;
6939 #endif
6940
6941                         /* FIXME: we should really allocate this only late in the compilation process */
6942                         f = mono_domain_alloc (cfg->domain, sizeof (float));
6943                         CHECK_OPSIZE (5);
6944                         CHECK_STACK_OVF (1);
6945
6946                         if (use_aotconst) {
6947                                 MonoInst *cons;
6948                                 int dreg;
6949
6950                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
6951
6952                                 dreg = alloc_freg (cfg);
6953                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
6954                                 ins->type = STACK_R8;
6955                         } else {
6956                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6957                                 ins->type = STACK_R8;
6958                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
6959                                 ins->inst_p0 = f;
6960                                 MONO_ADD_INS (bblock, ins);
6961                         }
6962                         ++ip;
6963                         readr4 (ip, f);
6964                         ip += 4;
6965                         *sp++ = ins;
6966                         break;
6967                 }
6968                 case CEE_LDC_R8: {
6969                         double *d;
6970                         gboolean use_aotconst = FALSE;
6971
6972 #ifdef TARGET_POWERPC
6973                         /* FIXME: Clean this up */
6974                         if (cfg->compile_aot)
6975                                 use_aotconst = TRUE;
6976 #endif
6977
6978                         /* FIXME: we should really allocate this only late in the compilation process */
6979                         d = mono_domain_alloc (cfg->domain, sizeof (double));
6980                         CHECK_OPSIZE (9);
6981                         CHECK_STACK_OVF (1);
6982
6983                         if (use_aotconst) {
6984                                 MonoInst *cons;
6985                                 int dreg;
6986
6987                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
6988
6989                                 dreg = alloc_freg (cfg);
6990                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
6991                                 ins->type = STACK_R8;
6992                         } else {
6993                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6994                                 ins->type = STACK_R8;
6995                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
6996                                 ins->inst_p0 = d;
6997                                 MONO_ADD_INS (bblock, ins);
6998                         }
6999                         ++ip;
7000                         readr8 (ip, d);
7001                         ip += 8;
7002                         *sp++ = ins;
7003                         break;
7004                 }
7005                 case CEE_DUP: {
7006                         MonoInst *temp, *store;
7007                         CHECK_STACK (1);
7008                         CHECK_STACK_OVF (1);
7009                         sp--;
7010                         ins = *sp;
7011
7012                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
7013                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
7014
7015                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7016                         *sp++ = ins;
7017
7018                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7019                         *sp++ = ins;
7020
7021                         ++ip;
7022                         inline_costs += 2;
7023                         break;
7024                 }
7025                 case CEE_POP:
7026                         CHECK_STACK (1);
7027                         ip++;
7028                         --sp;
7029
7030 #ifdef TARGET_X86
7031                         if (sp [0]->type == STACK_R8)
7032                                 /* we need to pop the value from the x86 FP stack */
7033                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
7034 #endif
7035                         break;
7036                 case CEE_JMP: {
7037                         MonoCallInst *call;
7038
7039                         INLINE_FAILURE ("jmp");
7040                         GSHAREDVT_FAILURE (*ip);
7041
7042                         CHECK_OPSIZE (5);
7043                         if (stack_start != sp)
7044                                 UNVERIFIED;
7045                         token = read32 (ip + 1);
7046                         /* FIXME: check the signature matches */
7047                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
7048
7049                         if (!cmethod || mono_loader_get_last_error ())
7050                                 LOAD_ERROR;
7051
7052                         if (cfg->generic_sharing_context && mono_method_check_context_used (cmethod))
7053                                 GENERIC_SHARING_FAILURE (CEE_JMP);
7054
7055                         if (mono_security_cas_enabled ())
7056                                 CHECK_CFG_EXCEPTION;
7057
7058 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
7059                         {
7060                                 MonoMethodSignature *fsig = mono_method_signature (cmethod);
7061                                 int i, n;
7062
7063                                 /* Handle tail calls similarly to calls */
7064                                 n = fsig->param_count + fsig->hasthis;
7065
7066                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
7067                                 call->method = cmethod;
7068                                 call->tail_call = TRUE;
7069                                 call->signature = mono_method_signature (cmethod);
7070                                 call->args = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
7071                                 call->inst.inst_p0 = cmethod;
7072                                 for (i = 0; i < n; ++i)
7073                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
7074
7075                                 mono_arch_emit_call (cfg, call);
7076                                 MONO_ADD_INS (bblock, (MonoInst*)call);
7077                         }
7078 #else
7079                         for (i = 0; i < num_args; ++i)
7080                                 /* Prevent arguments from being optimized away */
7081                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
7082
7083                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
7084                         ins = (MonoInst*)call;
7085                         ins->inst_p0 = cmethod;
7086                         MONO_ADD_INS (bblock, ins);
7087 #endif
7088
7089                         ip += 5;
7090                         start_new_bblock = 1;
7091                         break;
7092                 }
7093                 case CEE_CALLI:
7094                 case CEE_CALL:
7095                 case CEE_CALLVIRT: {
7096                         MonoInst *addr = NULL;
7097                         MonoMethodSignature *fsig = NULL;
7098                         int array_rank = 0;
7099                         int virtual = *ip == CEE_CALLVIRT;
7100                         int calli = *ip == CEE_CALLI;
7101                         gboolean pass_imt_from_rgctx = FALSE;
7102                         MonoInst *imt_arg = NULL;
7103                         MonoInst *keep_this_alive = NULL;
7104                         gboolean pass_vtable = FALSE;
7105                         gboolean pass_mrgctx = FALSE;
7106                         MonoInst *vtable_arg = NULL;
7107                         gboolean check_this = FALSE;
7108                         gboolean supported_tail_call = FALSE;
7109                         gboolean need_seq_point = FALSE;
7110                         guint32 call_opcode = *ip;
7111                         gboolean emit_widen = TRUE;
7112                         gboolean push_res = TRUE;
7113                         gboolean skip_ret = FALSE;
7114                         gboolean delegate_invoke = FALSE;
7115
7116                         CHECK_OPSIZE (5);
7117                         token = read32 (ip + 1);
7118
7119                         ins = NULL;
7120
7121                         if (calli) {
7122                                 //GSHAREDVT_FAILURE (*ip);
7123                                 cmethod = NULL;
7124                                 CHECK_STACK (1);
7125                                 --sp;
7126                                 addr = *sp;
7127                                 fsig = mini_get_signature (method, token, generic_context);
7128                                 n = fsig->param_count + fsig->hasthis;
7129
7130                                 if (method->dynamic && fsig->pinvoke) {
7131                                         MonoInst *args [3];
7132
7133                                         /*
7134                                          * This is a call through a function pointer using a pinvoke
7135                                          * signature. Have to create a wrapper and call that instead.
7136                                          * FIXME: This is very slow, need to create a wrapper at JIT time
7137                                          * instead based on the signature.
7138                                          */
7139                                         EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
7140                                         EMIT_NEW_PCONST (cfg, args [1], fsig);
7141                                         args [2] = addr;
7142                                         addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
7143                                 }
7144                         } else {
7145                                 MonoMethod *cil_method;
7146
7147                                 cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
7148                                 cil_method = cmethod;
7149
7150                                 if (constrained_call) {
7151                                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7152                                                 if (cfg->verbose_level > 2)
7153                                                         printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_call));
7154                                                 if (!((constrained_call->byval_arg.type == MONO_TYPE_VAR ||
7155                                                            constrained_call->byval_arg.type == MONO_TYPE_MVAR) &&
7156                                                           cfg->generic_sharing_context)) {
7157                                                         cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_call, generic_context);
7158                                                 }
7159                                         } else {
7160                                                 if (cfg->verbose_level > 2)
7161                                                         printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_call));
7162
7163                                                 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
7164                                                         /*
7165                                                          * This is needed since get_method_constrained can't find
7166                                                          * the method in klass representing a type var.
7167                                                          * The type var is guaranteed to be a reference type in this
7168                                                          * case.
7169                                                          */
7170                                                         if (!mini_is_gsharedvt_klass (cfg, constrained_call))
7171                                                                 g_assert (!cmethod->klass->valuetype);
7172                                                 } else {
7173                                                         cmethod = mono_get_method_constrained (image, token, constrained_call, generic_context, &cil_method);
7174                                                 }
7175                                         }
7176                                 }
7177
7178                                 if (!cmethod || mono_loader_get_last_error ())
7179                                         LOAD_ERROR;
7180                                 if (!dont_verify && !cfg->skip_visibility) {
7181                                         MonoMethod *target_method = cil_method;
7182                                         if (method->is_inflated) {
7183                                                 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
7184                                         }
7185                                         if (!mono_method_can_access_method (method_definition, target_method) &&
7186                                                 !mono_method_can_access_method (method, cil_method))
7187                                                 METHOD_ACCESS_FAILURE;
7188                                 }
7189
7190                                 if (mono_security_core_clr_enabled ())
7191                                         ensure_method_is_allowed_to_call_method (cfg, method, cil_method, bblock, ip);
7192
7193                                 if (!virtual && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
7194                                         /* MS.NET seems to silently convert this to a callvirt */
7195                                         virtual = 1;
7196
7197                                 {
7198                                         /*
7199                                          * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
7200                                          * converts to a callvirt.
7201                                          *
7202                                          * tests/bug-515884.il is an example of this behavior
7203                                          */
7204                                         const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
7205                                         const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
7206                                         if (!virtual && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
7207                                                 virtual = 1;
7208                                 }
7209
7210                                 if (!cmethod->klass->inited)
7211                                         if (!mono_class_init (cmethod->klass))
7212                                                 TYPE_LOAD_ERROR (cmethod->klass);
7213
7214                                 if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
7215                                     mini_class_is_system_array (cmethod->klass)) {
7216                                         array_rank = cmethod->klass->rank;
7217                                         fsig = mono_method_signature (cmethod);
7218                                 } else {
7219                                         fsig = mono_method_signature (cmethod);
7220
7221                                         if (!fsig)
7222                                                 LOAD_ERROR;
7223
7224                                         if (fsig->pinvoke) {
7225                                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod,
7226                                                         check_for_pending_exc, FALSE);
7227                                                 fsig = mono_method_signature (wrapper);
7228                                         } else if (constrained_call) {
7229                                                 fsig = mono_method_signature (cmethod);
7230                                         } else {
7231                                                 fsig = mono_method_get_signature_full (cmethod, image, token, generic_context);
7232                                         }
7233                                 }
7234
7235                                 mono_save_token_info (cfg, image, token, cil_method);
7236
7237                                 if (!MONO_TYPE_IS_VOID (fsig->ret) && !sym_seq_points) {
7238                                         /*
7239                                          * Need to emit an implicit seq point after every non-void call so single stepping through nested calls like
7240                                          * foo (bar (), baz ())
7241                                          * works correctly. MS does this also:
7242                                          * http://stackoverflow.com/questions/6937198/making-your-net-language-step-correctly-in-the-debugger
7243                                          * The problem with this approach is that the debugger will stop after all calls returning a value,
7244                                          * even for simple cases, like:
7245                                          * int i = foo ();
7246                                          */
7247                                         /* Special case a few common successor opcodes */
7248                                         if (!(ip + 5 < end && ip [5] == CEE_POP))
7249                                                 need_seq_point = TRUE;
7250                                 }
7251
7252                                 n = fsig->param_count + fsig->hasthis;
7253
7254                                 /* Don't support calls made using type arguments for now */
7255                                 /*
7256                                 if (cfg->gsharedvt) {
7257                                         if (mini_is_gsharedvt_signature (cfg, fsig))
7258                                                 GSHAREDVT_FAILURE (*ip);
7259                                 }
7260                                 */
7261
7262                                 if (mono_security_cas_enabled ()) {
7263                                         if (check_linkdemand (cfg, method, cmethod))
7264                                                 INLINE_FAILURE ("linkdemand");
7265                                         CHECK_CFG_EXCEPTION;
7266                                 }
7267
7268                                 if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
7269                                         g_assert_not_reached ();
7270                         }
7271
7272                         if (!cfg->generic_sharing_context && cmethod && cmethod->klass->generic_container)
7273                                 UNVERIFIED;
7274
7275                         if (!cfg->generic_sharing_context && cmethod)
7276                                 g_assert (!mono_method_check_context_used (cmethod));
7277
7278                         CHECK_STACK (n);
7279
7280                         //g_assert (!virtual || fsig->hasthis);
7281
7282                         sp -= n;
7283
7284                         if (constrained_call) {
7285                                 if (mini_is_gsharedvt_klass (cfg, constrained_call)) {
7286                                         /*
7287                                          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
7288                                          */
7289                                         /* Special case Object:ToString () as its easy to implement */
7290                                         if (cmethod->klass == mono_defaults.object_class && !strcmp (cmethod->name, "ToString")) {
7291                                                 MonoInst *args [3];
7292
7293                                                 args [0] = sp [0];
7294                                                 EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
7295                                                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_call), constrained_call, MONO_RGCTX_INFO_KLASS);
7296                                                 ins = mono_emit_jit_icall (cfg, mono_object_tostring_gsharedvt, args);
7297                                                 goto call_end;
7298                                         } else if (cmethod->klass == mono_defaults.object_class && !strcmp (cmethod->name, "GetHashCode")) {
7299                                                 MonoInst *args [3];
7300
7301                                                 args [0] = sp [0];
7302                                                 EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
7303                                                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_call), constrained_call, MONO_RGCTX_INFO_KLASS);
7304                                                 ins = mono_emit_jit_icall (cfg, mono_object_gethashcode_gsharedvt, args);
7305                                                 goto call_end;
7306                                         } else if (constrained_call->valuetype && cmethod->klass->valuetype) {
7307                                                 /* The 'Own method' case below */
7308                                         } else {
7309                                                 GSHAREDVT_FAILURE (*ip);
7310                                         }
7311                                 }
7312                                 /*
7313                                  * We have the `constrained.' prefix opcode.
7314                                  */
7315                                 if (constrained_call->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
7316                                         /*
7317                                          * The type parameter is instantiated as a valuetype,
7318                                          * but that type doesn't override the method we're
7319                                          * calling, so we need to box `this'.
7320                                          */
7321                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
7322                                         ins->klass = constrained_call;
7323                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call));
7324                                         bblock = cfg->cbb;
7325                                         CHECK_CFG_EXCEPTION;
7326                                 } else if (!constrained_call->valuetype) {
7327                                         int dreg = alloc_ireg_ref (cfg);
7328
7329                                         /*
7330                                          * The type parameter is instantiated as a reference
7331                                          * type.  We have a managed pointer on the stack, so
7332                                          * we need to dereference it here.
7333                                          */
7334                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
7335                                         ins->type = STACK_OBJ;
7336                                         sp [0] = ins;
7337                                 } else {
7338                                         if (cmethod->klass->valuetype) {
7339                                                 /* Own method */
7340                                         } else {
7341                                                 /* Interface method */
7342                                                 int ioffset, slot;
7343
7344                                                 mono_class_setup_vtable (constrained_call);
7345                                                 CHECK_TYPELOAD (constrained_call);
7346                                                 ioffset = mono_class_interface_offset (constrained_call, cmethod->klass);
7347                                                 if (ioffset == -1)
7348                                                         TYPE_LOAD_ERROR (constrained_call);
7349                                                 slot = mono_method_get_vtable_slot (cmethod);
7350                                                 if (slot == -1)
7351                                                         TYPE_LOAD_ERROR (cmethod->klass);
7352                                                 cmethod = constrained_call->vtable [ioffset + slot];
7353
7354                                                 if (cmethod->klass == mono_defaults.enum_class) {
7355                                                         /* Enum implements some interfaces, so treat this as the first case */
7356                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
7357                                                         ins->klass = constrained_call;
7358                                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call));
7359                                                         bblock = cfg->cbb;
7360                                                         CHECK_CFG_EXCEPTION;
7361                                                 }
7362                                         }
7363                                         virtual = 0;
7364                                 }
7365                                 constrained_call = NULL;
7366                         }
7367
7368                         if (!calli && check_call_signature (cfg, fsig, sp))
7369                                 UNVERIFIED;
7370
7371 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
7372                         if (cmethod && (cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
7373                                 delegate_invoke = TRUE;
7374 #endif
7375
7376                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
7377                                 bblock = cfg->cbb;
7378                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7379                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
7380                                         emit_widen = FALSE;
7381                                 }
7382
7383                                 goto call_end;
7384                         }
7385
7386                         /*
7387                          * If the callee is a shared method, then its static cctor
7388                          * might not get called after the call was patched.
7389                          */
7390                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable_impl (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
7391                                 emit_generic_class_init (cfg, cmethod->klass);
7392                                 CHECK_TYPELOAD (cmethod->klass);
7393                         }
7394
7395                         if (cmethod && ((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
7396                                         (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
7397                                 gboolean sharable = FALSE;
7398
7399                                 if (mono_method_is_generic_sharable_impl (cmethod, TRUE)) {
7400                                         sharable = TRUE;
7401                                 } else {
7402                                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
7403                                         MonoGenericContext *context = mini_class_get_context (cmethod->klass);
7404                                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
7405
7406                                         sharable = sharing_enabled && context_sharable;
7407                                 }
7408
7409                                 /*
7410                                  * Pass vtable iff target method might
7411                                  * be shared, which means that sharing
7412                                  * is enabled for its class and its
7413                                  * context is sharable (and it's not a
7414                                  * generic method).
7415                                  */
7416                                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
7417                                         pass_vtable = TRUE;
7418                         }
7419
7420                         if (cmethod && mini_method_get_context (cmethod) &&
7421                                         mini_method_get_context (cmethod)->method_inst) {
7422                                 g_assert (!pass_vtable);
7423
7424                                 if (mono_method_is_generic_sharable_impl (cmethod, TRUE)) {
7425                                         pass_mrgctx = TRUE;
7426                                 } else {
7427                                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
7428                                         MonoGenericContext *context = mini_method_get_context (cmethod);
7429                                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
7430
7431                                         if (sharing_enabled && context_sharable)
7432                                                 pass_mrgctx = TRUE;
7433                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7434                                                 pass_mrgctx = TRUE;
7435                                 }
7436                         }
7437
7438                         if (cfg->generic_sharing_context && cmethod) {
7439                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
7440
7441                                 context_used = mini_method_check_context_used (cfg, cmethod);
7442
7443                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7444                                         /* Generic method interface
7445                                            calls are resolved via a
7446                                            helper function and don't
7447                                            need an imt. */
7448                                         if (!cmethod_context || !cmethod_context->method_inst)
7449                                                 pass_imt_from_rgctx = TRUE;
7450                                 }
7451
7452                                 /*
7453                                  * If a shared method calls another
7454                                  * shared method then the caller must
7455                                  * have a generic sharing context
7456                                  * because the magic trampoline
7457                                  * requires it.  FIXME: We shouldn't
7458                                  * have to force the vtable/mrgctx
7459                                  * variable here.  Instead there
7460                                  * should be a flag in the cfg to
7461                                  * request a generic sharing context.
7462                                  */
7463                                 if (context_used &&
7464                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
7465                                         mono_get_vtable_var (cfg);
7466                         }
7467
7468                         if (pass_vtable) {
7469                                 if (context_used) {
7470                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7471                                 } else {
7472                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7473
7474                                         CHECK_TYPELOAD (cmethod->klass);
7475                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7476                                 }
7477                         }
7478
7479                         if (pass_mrgctx) {
7480                                 g_assert (!vtable_arg);
7481
7482                                 if (!cfg->compile_aot) {
7483                                         /*
7484                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
7485                                          * for type load errors before.
7486                                          */
7487                                         mono_class_setup_vtable (cmethod->klass);
7488                                         CHECK_TYPELOAD (cmethod->klass);
7489                                 }
7490
7491                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7492
7493                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
7494                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
7495                                          MONO_METHOD_IS_FINAL (cmethod)) &&
7496                                         !mono_class_is_marshalbyref (cmethod->klass)) {
7497                                         if (virtual)
7498                                                 check_this = TRUE;
7499                                         virtual = 0;
7500                                 }
7501                         }
7502
7503                         if (pass_imt_from_rgctx) {
7504                                 g_assert (!pass_vtable);
7505                                 g_assert (cmethod);
7506
7507                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
7508                                         cmethod, MONO_RGCTX_INFO_METHOD);
7509                         }
7510
7511                         if (check_this)
7512                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
7513
7514                         /* Calling virtual generic methods */
7515                         if (cmethod && virtual &&
7516                             (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
7517                             !(MONO_METHOD_IS_FINAL (cmethod) &&
7518                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
7519                             fsig->generic_param_count &&
7520                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))) {
7521                                 MonoInst *this_temp, *this_arg_temp, *store;
7522                                 MonoInst *iargs [4];
7523                                 gboolean use_imt = FALSE;
7524
7525                                 g_assert (fsig->is_inflated);
7526
7527                                 /* Prevent inlining of methods that contain indirect calls */
7528                                 INLINE_FAILURE ("virtual generic call");
7529
7530                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7531                                         GSHAREDVT_FAILURE (*ip);
7532
7533 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
7534                                 if (cmethod->wrapper_type == MONO_WRAPPER_NONE && mono_use_imt)
7535                                         use_imt = TRUE;
7536 #endif
7537
7538                                 if (use_imt) {
7539                                         g_assert (!imt_arg);
7540                                         if (!context_used)
7541                                                 g_assert (cmethod->is_inflated);
7542                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
7543                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
7544                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, sp, sp [0], imt_arg, NULL);
7545                                 } else {
7546                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
7547                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
7548                                         MONO_ADD_INS (bblock, store);
7549
7550                                         /* FIXME: This should be a managed pointer */
7551                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7552
7553                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
7554                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
7555                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
7556                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
7557                                         addr = mono_emit_jit_icall (cfg,
7558                                                                                                 mono_helper_compile_generic_method, iargs);
7559
7560                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
7561
7562                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
7563                                 }
7564
7565                                 goto call_end;
7566                         }
7567
7568                         /*
7569                          * Implement a workaround for the inherent races involved in locking:
7570                          * Monitor.Enter ()
7571                          * try {
7572                          * } finally {
7573                          *    Monitor.Exit ()
7574                          * }
7575                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
7576                          * try block, the Exit () won't be executed, see:
7577                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
7578                          * To work around this, we extend such try blocks to include the last x bytes
7579                          * of the Monitor.Enter () call.
7580                          */
7581                         if (cmethod && cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
7582                                 MonoBasicBlock *tbb;
7583
7584                                 GET_BBLOCK (cfg, tbb, ip + 5);
7585                                 /*
7586                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
7587                                  * from Monitor.Enter like ArgumentNullException.
7588                                  */
7589                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
7590                                         /* Mark this bblock as needing to be extended */
7591                                         tbb->extend_try_block = TRUE;
7592                                 }
7593                         }
7594
7595                         /* Conversion to a JIT intrinsic */
7596                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
7597                                 bblock = cfg->cbb;
7598                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7599                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
7600                                         emit_widen = FALSE;
7601                                 }
7602                                 goto call_end;
7603                         }
7604
7605                         /* Inlining */
7606                         if (cmethod && (cfg->opt & MONO_OPT_INLINE) &&
7607                                 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
7608                             !disable_inline && mono_method_check_inlining (cfg, cmethod) &&
7609                                  !g_list_find (dont_inline, cmethod)) {
7610                                 int costs;
7611                                 gboolean always = FALSE;
7612
7613                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
7614                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
7615                                         /* Prevent inlining of methods that call wrappers */
7616                                         INLINE_FAILURE ("wrapper call");
7617                                         cmethod = mono_marshal_get_native_wrapper (cmethod, check_for_pending_exc, FALSE);
7618                                         always = TRUE;
7619                                 }
7620
7621                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, always);
7622                                 if (costs) {
7623                                         cfg->real_offset += 5;
7624                                         bblock = cfg->cbb;
7625
7626                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7627                                                 /* *sp is already set by inline_method */
7628                                                 sp++;
7629                                                 push_res = FALSE;
7630                                         }
7631
7632                                         inline_costs += costs;
7633
7634                                         goto call_end;
7635                                 }
7636                         }
7637
7638                         /* Tail recursion elimination */
7639                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
7640                                 gboolean has_vtargs = FALSE;
7641                                 int i;
7642
7643                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
7644                                 INLINE_FAILURE ("tail call");
7645
7646                                 /* keep it simple */
7647                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
7648                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
7649                                                 has_vtargs = TRUE;
7650                                 }
7651
7652                                 if (!has_vtargs) {
7653                                         for (i = 0; i < n; ++i)
7654                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
7655                                         MONO_INST_NEW (cfg, ins, OP_BR);
7656                                         MONO_ADD_INS (bblock, ins);
7657                                         tblock = start_bblock->out_bb [0];
7658                                         link_bblock (cfg, bblock, tblock);
7659                                         ins->inst_target_bb = tblock;
7660                                         start_new_bblock = 1;
7661
7662                                         /* skip the CEE_RET, too */
7663                                         if (ip_in_bb (cfg, bblock, ip + 5))
7664                                                 skip_ret = TRUE;
7665                                         push_res = FALSE;
7666                                         goto call_end;
7667                                 }
7668                         }
7669
7670                         inline_costs += 10 * num_calls++;
7671
7672                         /*
7673                          * Making generic calls out of gsharedvt methods.
7674                          */
7675                         if (cmethod && cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7676                                 MonoRgctxInfoType info_type;
7677
7678                                 if (virtual) {
7679                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
7680                                                 //GSHAREDVT_FAILURE (*ip);
7681                                         // disable for possible remoting calls
7682                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
7683                                                 GSHAREDVT_FAILURE (*ip);
7684                                         if (fsig->generic_param_count) {
7685                                                 /* virtual generic call */
7686                                                 g_assert (mono_use_imt);
7687                                                 g_assert (!imt_arg);
7688                                                 /* Same as the virtual generic case above */
7689                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
7690                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
7691                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
7692                                                 vtable_arg = NULL;
7693                                         }
7694                                 }
7695
7696                                 if (cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY)
7697                                         /* test_0_multi_dim_arrays () in gshared.cs */
7698                                         GSHAREDVT_FAILURE (*ip);
7699
7700                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
7701                                         keep_this_alive = sp [0];
7702
7703                                 if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
7704                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
7705                                 else
7706                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
7707                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
7708
7709                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
7710                                 goto call_end;
7711                         } else if (calli && cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7712                                 /*
7713                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
7714                                  */
7715                                 MonoInst *callee = addr;
7716
7717                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
7718                                         /* Not tested */
7719                                         GSHAREDVT_FAILURE (*ip);
7720
7721                                 addr = emit_get_rgctx_sig (cfg, context_used,
7722                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
7723                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
7724                                 goto call_end;
7725                         }
7726
7727                         /* Generic sharing */
7728                         /* FIXME: only do this for generic methods if
7729                            they are not shared! */
7730                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
7731                                 (!mono_method_is_generic_sharable_impl (cmethod, TRUE) ||
7732                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
7733                                 (!virtual || MONO_METHOD_IS_FINAL (cmethod) ||
7734                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
7735                                 INLINE_FAILURE ("gshared");
7736
7737                                 g_assert (cfg->generic_sharing_context && cmethod);
7738                                 g_assert (!addr);
7739
7740                                 /*
7741                                  * We are compiling a call to a
7742                                  * generic method from shared code,
7743                                  * which means that we have to look up
7744                                  * the method in the rgctx and do an
7745                                  * indirect call.
7746                                  */
7747                                 if (fsig->hasthis)
7748                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
7749
7750                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7751                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
7752                                 goto call_end;
7753                         }
7754
7755                         /* Indirect calls */
7756                         if (addr) {
7757                                 if (call_opcode == CEE_CALL)
7758                                         g_assert (context_used);
7759                                 else if (call_opcode == CEE_CALLI)
7760                                         g_assert (!vtable_arg);
7761                                 else
7762                                         /* FIXME: what the hell is this??? */
7763                                         g_assert (cmethod->flags & METHOD_ATTRIBUTE_FINAL ||
7764                                                         !(cmethod->flags & METHOD_ATTRIBUTE_FINAL));
7765
7766                                 /* Prevent inlining of methods with indirect calls */
7767                                 INLINE_FAILURE ("indirect call");
7768
7769                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
7770                                         int info_type;
7771                                         gpointer info_data;
7772
7773                                         /*
7774                                          * Instead of emitting an indirect call, emit a direct call
7775                                          * with the contents of the aotconst as the patch info.
7776                                          */
7777                                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
7778                                                 info_type = addr->inst_c1;
7779                                                 info_data = addr->inst_p0;
7780                                         } else {
7781                                                 info_type = addr->inst_right->inst_c1;
7782                                                 info_data = addr->inst_right->inst_left;
7783                                         }
7784
7785                                         if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
7786                                                 ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
7787                                                 NULLIFY_INS (addr);
7788                                                 goto call_end;
7789                                         }
7790                                 }
7791                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
7792                                 goto call_end;
7793                         }
7794
7795                         /* Array methods */
7796                         if (array_rank) {
7797                                 MonoInst *addr;
7798
7799                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
7800                                         MonoInst *val = sp [fsig->param_count];
7801
7802                                         if (val->type == STACK_OBJ) {
7803                                                 MonoInst *iargs [2];
7804
7805                                                 iargs [0] = sp [0];
7806                                                 iargs [1] = val;
7807
7808                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
7809                                         }
7810
7811                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
7812                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
7813                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
7814                                                 emit_write_barrier (cfg, addr, val, 0);
7815                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
7816                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
7817
7818                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
7819                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
7820                                         if (!cmethod->klass->element_class->valuetype && !readonly)
7821                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
7822                                         CHECK_TYPELOAD (cmethod->klass);
7823
7824                                         readonly = FALSE;
7825                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
7826                                         ins = addr;
7827                                 } else {
7828                                         g_assert_not_reached ();
7829                                 }
7830
7831                                 emit_widen = FALSE;
7832                                 goto call_end;
7833                         }
7834
7835                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL);
7836                         if (ins)
7837                                 goto call_end;
7838
7839                         /* Tail prefix / tail call optimization */
7840
7841                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
7842                         /* FIXME: runtime generic context pointer for jumps? */
7843                         /* FIXME: handle this for generic sharing eventually */
7844                         if (cmethod &&
7845                                 ((((ins_flag & MONO_INST_TAILCALL) && (call_opcode == CEE_CALL))
7846                                   ))//|| ((cfg->opt & MONO_OPT_TAILC) && *ip == CEE_CALL && ip [5] == CEE_RET))
7847                                 && !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig))
7848                                 supported_tail_call = TRUE;
7849                         if (supported_tail_call) {
7850                                 MonoCallInst *call;
7851
7852                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
7853                                 INLINE_FAILURE ("tail call");
7854
7855                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7856
7857 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
7858                                 /* Handle tail calls similarly to calls */
7859                                 call = mono_emit_call_args (cfg, mono_method_signature (cmethod), sp, FALSE, FALSE, TRUE, FALSE, FALSE);
7860 #else
7861                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
7862                                 call->tail_call = TRUE;
7863                                 call->method = cmethod;
7864                                 call->signature = mono_method_signature (cmethod);
7865
7866                                 /*
7867                                  * We implement tail calls by storing the actual arguments into the
7868                                  * argument variables, then emitting a CEE_JMP.
7869                                  */
7870                                 for (i = 0; i < n; ++i) {
7871                                         /* Prevent argument from being register allocated */
7872                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
7873                                         EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
7874                                 }
7875 #endif
7876
7877                                 ins = (MonoInst*)call;
7878                                 ins->inst_p0 = cmethod;
7879                                 ins->inst_p1 = arg_array [0];
7880                                 MONO_ADD_INS (bblock, ins);
7881                                 link_bblock (cfg, bblock, end_bblock);
7882                                 start_new_bblock = 1;
7883
7884                                 // FIXME: Eliminate unreachable epilogs
7885
7886                                 /*
7887                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
7888                                  * only reachable from this call.
7889                                  */
7890                                 GET_BBLOCK (cfg, tblock, ip + 5);
7891                                 if (tblock == bblock || tblock->in_count == 0)
7892                                         skip_ret = TRUE;
7893                                 push_res = FALSE;
7894
7895                                 goto call_end;
7896                         }
7897
7898                         /*
7899                          * Synchronized wrappers.
7900                          * Its hard to determine where to replace a method with its synchronized
7901                          * wrapper without causing an infinite recursion. The current solution is
7902                          * to add the synchronized wrapper in the trampolines, and to
7903                          * change the called method to a dummy wrapper, and resolve that wrapper
7904                          * to the real method in mono_jit_compile_method ().
7905                          */
7906                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED && mono_marshal_method_from_wrapper (cfg->method) == cmethod)
7907                                 cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
7908
7909                         /* Common call */
7910                         INLINE_FAILURE ("call");
7911                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL,
7912                                                                                           imt_arg, vtable_arg);
7913
7914                         call_end:
7915
7916                         /* End of call, INS should contain the result of the call, if any */
7917
7918                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
7919                                 g_assert (ins);
7920                                 if (emit_widen)
7921                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
7922                                 else
7923                                         *sp++ = ins;
7924                         }
7925
7926                         if (keep_this_alive) {
7927                                 MonoInst *dummy_use;
7928
7929                                 /* See mono_emit_method_call_full () */
7930                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
7931                         }
7932
7933                         CHECK_CFG_EXCEPTION;
7934
7935                         ip += 5;
7936                         if (skip_ret) {
7937                                 g_assert (*ip == CEE_RET);
7938                                 ip += 1;
7939                         }
7940                         ins_flag = 0;
7941                         constrained_call = NULL;
7942                         if (need_seq_point)
7943                                 emit_seq_point (cfg, method, ip, FALSE);
7944                         break;
7945                 }
7946                 case CEE_RET:
7947                         if (cfg->method != method) {
7948                                 /* return from inlined method */
7949                                 /*
7950                                  * If in_count == 0, that means the ret is unreachable due to
7951                                  * being preceeded by a throw. In that case, inline_method () will
7952                                  * handle setting the return value
7953                                  * (test case: test_0_inline_throw ()).
7954                                  */
7955                                 if (return_var && cfg->cbb->in_count) {
7956                                         MonoType *ret_type = mono_method_signature (method)->ret;
7957
7958                                         MonoInst *store;
7959                                         CHECK_STACK (1);
7960                                         --sp;
7961
7962                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
7963                                                 UNVERIFIED;
7964
7965                                         //g_assert (returnvar != -1);
7966                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
7967                                         cfg->ret_var_set = TRUE;
7968                                 }
7969                         } else {
7970                                 if (cfg->ret) {
7971                                         MonoType *ret_type = mono_method_signature (method)->ret;
7972
7973                                         if (seq_points && !sym_seq_points) {
7974                                                 /*
7975                                                  * Place a seq point here too even through the IL stack is not
7976                                                  * empty, so a step over on
7977                                                  * call <FOO>
7978                                                  * ret
7979                                                  * will work correctly.
7980                                                  */
7981                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
7982                                                 MONO_ADD_INS (cfg->cbb, ins);
7983                                         }
7984
7985                                         g_assert (!return_var);
7986                                         CHECK_STACK (1);
7987                                         --sp;
7988
7989                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
7990                                                 UNVERIFIED;
7991
7992                                         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7993                                                 MonoInst *ret_addr;
7994
7995                                                 if (!cfg->vret_addr) {
7996                                                         MonoInst *ins;
7997
7998                                                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, (*sp));
7999                                                 } else {
8000                                                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8001
8002                                                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, (*sp)->dreg);
8003                                                         ins->klass = mono_class_from_mono_type (ret_type);
8004                                                 }
8005                                         } else {
8006 #ifdef MONO_ARCH_SOFT_FLOAT
8007                                                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8008                                                         MonoInst *iargs [1];
8009                                                         MonoInst *conv;
8010
8011                                                         iargs [0] = *sp;
8012                                                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8013                                                         mono_arch_emit_setret (cfg, method, conv);
8014                                                 } else {
8015                                                         mono_arch_emit_setret (cfg, method, *sp);
8016                                                 }
8017 #else
8018                                                 mono_arch_emit_setret (cfg, method, *sp);
8019 #endif
8020                                         }
8021                                 }
8022                         }
8023                         if (sp != stack_start)
8024                                 UNVERIFIED;
8025                         MONO_INST_NEW (cfg, ins, OP_BR);
8026                         ip++;
8027                         ins->inst_target_bb = end_bblock;
8028                         MONO_ADD_INS (bblock, ins);
8029                         link_bblock (cfg, bblock, end_bblock);
8030                         start_new_bblock = 1;
8031                         break;
8032                 case CEE_BR_S:
8033                         CHECK_OPSIZE (2);
8034                         MONO_INST_NEW (cfg, ins, OP_BR);
8035                         ip++;
8036                         target = ip + 1 + (signed char)(*ip);
8037                         ++ip;
8038                         GET_BBLOCK (cfg, tblock, target);
8039                         link_bblock (cfg, bblock, tblock);
8040                         ins->inst_target_bb = tblock;
8041                         if (sp != stack_start) {
8042                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8043                                 sp = stack_start;
8044                                 CHECK_UNVERIFIABLE (cfg);
8045                         }
8046                         MONO_ADD_INS (bblock, ins);
8047                         start_new_bblock = 1;
8048                         inline_costs += BRANCH_COST;
8049                         break;
8050                 case CEE_BEQ_S:
8051                 case CEE_BGE_S:
8052                 case CEE_BGT_S:
8053                 case CEE_BLE_S:
8054                 case CEE_BLT_S:
8055                 case CEE_BNE_UN_S:
8056                 case CEE_BGE_UN_S:
8057                 case CEE_BGT_UN_S:
8058                 case CEE_BLE_UN_S:
8059                 case CEE_BLT_UN_S:
8060                         CHECK_OPSIZE (2);
8061                         CHECK_STACK (2);
8062                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
8063                         ip++;
8064                         target = ip + 1 + *(signed char*)ip;
8065                         ip++;
8066
8067                         ADD_BINCOND (NULL);
8068
8069                         sp = stack_start;
8070                         inline_costs += BRANCH_COST;
8071                         break;
8072                 case CEE_BR:
8073                         CHECK_OPSIZE (5);
8074                         MONO_INST_NEW (cfg, ins, OP_BR);
8075                         ip++;
8076
8077                         target = ip + 4 + (gint32)read32(ip);
8078                         ip += 4;
8079                         GET_BBLOCK (cfg, tblock, target);
8080                         link_bblock (cfg, bblock, tblock);
8081                         ins->inst_target_bb = tblock;
8082                         if (sp != stack_start) {
8083                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8084                                 sp = stack_start;
8085                                 CHECK_UNVERIFIABLE (cfg);
8086                         }
8087
8088                         MONO_ADD_INS (bblock, ins);
8089
8090                         start_new_bblock = 1;
8091                         inline_costs += BRANCH_COST;
8092                         break;
8093                 case CEE_BRFALSE_S:
8094                 case CEE_BRTRUE_S:
8095                 case CEE_BRFALSE:
8096                 case CEE_BRTRUE: {
8097                         MonoInst *cmp;
8098                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
8099                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
8100                         guint32 opsize = is_short ? 1 : 4;
8101
8102                         CHECK_OPSIZE (opsize);
8103                         CHECK_STACK (1);
8104                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
8105                                 UNVERIFIED;
8106                         ip ++;
8107                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
8108                         ip += opsize;
8109
8110                         sp--;
8111
8112                         GET_BBLOCK (cfg, tblock, target);
8113                         link_bblock (cfg, bblock, tblock);
8114                         GET_BBLOCK (cfg, tblock, ip);
8115                         link_bblock (cfg, bblock, tblock);
8116
8117                         if (sp != stack_start) {
8118                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8119                                 CHECK_UNVERIFIABLE (cfg);
8120                         }
8121
8122                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
8123                         cmp->sreg1 = sp [0]->dreg;
8124                         type_from_op (cmp, sp [0], NULL);
8125                         CHECK_TYPE (cmp);
8126
8127 #if SIZEOF_REGISTER == 4
8128                         if (cmp->opcode == OP_LCOMPARE_IMM) {
8129                                 /* Convert it to OP_LCOMPARE */
8130                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
8131                                 ins->type = STACK_I8;
8132                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
8133                                 ins->inst_l = 0;
8134                                 MONO_ADD_INS (bblock, ins);
8135                                 cmp->opcode = OP_LCOMPARE;
8136                                 cmp->sreg2 = ins->dreg;
8137                         }
8138 #endif
8139                         MONO_ADD_INS (bblock, cmp);
8140
8141                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
8142                         type_from_op (ins, sp [0], NULL);
8143                         MONO_ADD_INS (bblock, ins);
8144                         ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
8145                         GET_BBLOCK (cfg, tblock, target);
8146                         ins->inst_true_bb = tblock;
8147                         GET_BBLOCK (cfg, tblock, ip);
8148                         ins->inst_false_bb = tblock;
8149                         start_new_bblock = 2;
8150
8151                         sp = stack_start;
8152                         inline_costs += BRANCH_COST;
8153                         break;
8154                 }
8155                 case CEE_BEQ:
8156                 case CEE_BGE:
8157                 case CEE_BGT:
8158                 case CEE_BLE:
8159                 case CEE_BLT:
8160                 case CEE_BNE_UN:
8161                 case CEE_BGE_UN:
8162                 case CEE_BGT_UN:
8163                 case CEE_BLE_UN:
8164                 case CEE_BLT_UN:
8165                         CHECK_OPSIZE (5);
8166                         CHECK_STACK (2);
8167                         MONO_INST_NEW (cfg, ins, *ip);
8168                         ip++;
8169                         target = ip + 4 + (gint32)read32(ip);
8170                         ip += 4;
8171
8172                         ADD_BINCOND (NULL);
8173
8174                         sp = stack_start;
8175                         inline_costs += BRANCH_COST;
8176                         break;
8177                 case CEE_SWITCH: {
8178                         MonoInst *src1;
8179                         MonoBasicBlock **targets;
8180                         MonoBasicBlock *default_bblock;
8181                         MonoJumpInfoBBTable *table;
8182                         int offset_reg = alloc_preg (cfg);
8183                         int target_reg = alloc_preg (cfg);
8184                         int table_reg = alloc_preg (cfg);
8185                         int sum_reg = alloc_preg (cfg);
8186                         gboolean use_op_switch;
8187
8188                         CHECK_OPSIZE (5);
8189                         CHECK_STACK (1);
8190                         n = read32 (ip + 1);
8191                         --sp;
8192                         src1 = sp [0];
8193                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
8194                                 UNVERIFIED;
8195
8196                         ip += 5;
8197                         CHECK_OPSIZE (n * sizeof (guint32));
8198                         target = ip + n * sizeof (guint32);
8199
8200                         GET_BBLOCK (cfg, default_bblock, target);
8201                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8202
8203                         targets = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
8204                         for (i = 0; i < n; ++i) {
8205                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
8206                                 targets [i] = tblock;
8207                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
8208                                 ip += 4;
8209                         }
8210
8211                         if (sp != stack_start) {
8212                                 /*
8213                                  * Link the current bb with the targets as well, so handle_stack_args
8214                                  * will set their in_stack correctly.
8215                                  */
8216                                 link_bblock (cfg, bblock, default_bblock);
8217                                 for (i = 0; i < n; ++i)
8218                                         link_bblock (cfg, bblock, targets [i]);
8219
8220                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8221                                 sp = stack_start;
8222                                 CHECK_UNVERIFIABLE (cfg);
8223                         }
8224
8225                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
8226                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
8227                         bblock = cfg->cbb;
8228
8229                         for (i = 0; i < n; ++i)
8230                                 link_bblock (cfg, bblock, targets [i]);
8231
8232                         table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
8233                         table->table = targets;
8234                         table->table_size = n;
8235
8236                         use_op_switch = FALSE;
8237 #ifdef TARGET_ARM
8238                         /* ARM implements SWITCH statements differently */
8239                         /* FIXME: Make it use the generic implementation */
8240                         if (!cfg->compile_aot)
8241                                 use_op_switch = TRUE;
8242 #endif
8243
8244                         if (COMPILE_LLVM (cfg))
8245                                 use_op_switch = TRUE;
8246
8247                         cfg->cbb->has_jump_table = 1;
8248
8249                         if (use_op_switch) {
8250                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
8251                                 ins->sreg1 = src1->dreg;
8252                                 ins->inst_p0 = table;
8253                                 ins->inst_many_bb = targets;
8254                                 ins->klass = GUINT_TO_POINTER (n);
8255                                 MONO_ADD_INS (cfg->cbb, ins);
8256                         } else {
8257                                 if (sizeof (gpointer) == 8)
8258                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
8259                                 else
8260                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
8261
8262 #if SIZEOF_REGISTER == 8
8263                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
8264                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
8265 #endif
8266
8267                                 if (cfg->compile_aot) {
8268                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
8269                                 } else {
8270                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
8271                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
8272                                         ins->inst_p0 = table;
8273                                         ins->dreg = table_reg;
8274                                         MONO_ADD_INS (cfg->cbb, ins);
8275                                 }
8276
8277                                 /* FIXME: Use load_memindex */
8278                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
8279                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
8280                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
8281                         }
8282                         start_new_bblock = 1;
8283                         inline_costs += (BRANCH_COST * 2);
8284                         break;
8285                 }
8286                 case CEE_LDIND_I1:
8287                 case CEE_LDIND_U1:
8288                 case CEE_LDIND_I2:
8289                 case CEE_LDIND_U2:
8290                 case CEE_LDIND_I4:
8291                 case CEE_LDIND_U4:
8292                 case CEE_LDIND_I8:
8293                 case CEE_LDIND_I:
8294                 case CEE_LDIND_R4:
8295                 case CEE_LDIND_R8:
8296                 case CEE_LDIND_REF:
8297                         CHECK_STACK (1);
8298                         --sp;
8299
8300                         switch (*ip) {
8301                         case CEE_LDIND_R4:
8302                         case CEE_LDIND_R8:
8303                                 dreg = alloc_freg (cfg);
8304                                 break;
8305                         case CEE_LDIND_I8:
8306                                 dreg = alloc_lreg (cfg);
8307                                 break;
8308                         case CEE_LDIND_REF:
8309                                 dreg = alloc_ireg_ref (cfg);
8310                                 break;
8311                         default:
8312                                 dreg = alloc_preg (cfg);
8313                         }
8314
8315                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
8316                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
8317                         ins->flags |= ins_flag;
8318                         ins_flag = 0;
8319                         MONO_ADD_INS (bblock, ins);
8320                         *sp++ = ins;
8321                         if (ins->flags & MONO_INST_VOLATILE) {
8322                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
8323                                 /* FIXME it's questionable if acquire semantics require full barrier or just LoadLoad*/
8324                                 emit_memory_barrier (cfg, FullBarrier);
8325                         }
8326                         ++ip;
8327                         break;
8328                 case CEE_STIND_REF:
8329                 case CEE_STIND_I1:
8330                 case CEE_STIND_I2:
8331                 case CEE_STIND_I4:
8332                 case CEE_STIND_I8:
8333                 case CEE_STIND_R4:
8334                 case CEE_STIND_R8:
8335                 case CEE_STIND_I:
8336                         CHECK_STACK (2);
8337                         sp -= 2;
8338
8339                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
8340                         ins->flags |= ins_flag;
8341                         ins_flag = 0;
8342
8343                         if (ins->flags & MONO_INST_VOLATILE) {
8344                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
8345                                 /* FIXME it's questionable if acquire semantics require full barrier or just LoadLoad*/
8346                                 emit_memory_barrier (cfg, FullBarrier);
8347                         }
8348
8349                         MONO_ADD_INS (bblock, ins);
8350
8351                         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)))
8352                                 emit_write_barrier (cfg, sp [0], sp [1], -1);
8353
8354                         inline_costs += 1;
8355                         ++ip;
8356                         break;
8357
8358                 case CEE_MUL:
8359                         CHECK_STACK (2);
8360
8361                         MONO_INST_NEW (cfg, ins, (*ip));
8362                         sp -= 2;
8363                         ins->sreg1 = sp [0]->dreg;
8364                         ins->sreg2 = sp [1]->dreg;
8365                         type_from_op (ins, sp [0], sp [1]);
8366                         CHECK_TYPE (ins);
8367                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
8368
8369                         /* Use the immediate opcodes if possible */
8370                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
8371                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
8372                                 if (imm_opcode != -1) {
8373                                         ins->opcode = imm_opcode;
8374                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
8375                                         ins->sreg2 = -1;
8376
8377                                         sp [1]->opcode = OP_NOP;
8378                                 }
8379                         }
8380
8381                         MONO_ADD_INS ((cfg)->cbb, (ins));
8382
8383                         *sp++ = mono_decompose_opcode (cfg, ins);
8384                         ip++;
8385                         break;
8386                 case CEE_ADD:
8387                 case CEE_SUB:
8388                 case CEE_DIV:
8389                 case CEE_DIV_UN:
8390                 case CEE_REM:
8391                 case CEE_REM_UN:
8392                 case CEE_AND:
8393                 case CEE_OR:
8394                 case CEE_XOR:
8395                 case CEE_SHL:
8396                 case CEE_SHR:
8397                 case CEE_SHR_UN:
8398                         CHECK_STACK (2);
8399
8400                         MONO_INST_NEW (cfg, ins, (*ip));
8401                         sp -= 2;
8402                         ins->sreg1 = sp [0]->dreg;
8403                         ins->sreg2 = sp [1]->dreg;
8404                         type_from_op (ins, sp [0], sp [1]);
8405                         CHECK_TYPE (ins);
8406                         ADD_WIDEN_OP (ins, sp [0], sp [1]);
8407                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
8408
8409                         /* FIXME: Pass opcode to is_inst_imm */
8410
8411                         /* Use the immediate opcodes if possible */
8412                         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)) {
8413                                 int imm_opcode;
8414
8415                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
8416 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
8417                                 /* Keep emulated opcodes which are optimized away later */
8418                                 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) {
8419                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
8420                                 }
8421 #endif
8422                                 if (imm_opcode != -1) {
8423                                         ins->opcode = imm_opcode;
8424                                         if (sp [1]->opcode == OP_I8CONST) {
8425 #if SIZEOF_REGISTER == 8
8426                                                 ins->inst_imm = sp [1]->inst_l;
8427 #else
8428                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
8429                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
8430 #endif
8431                                         }
8432                                         else
8433                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
8434                                         ins->sreg2 = -1;
8435
8436                                         /* Might be followed by an instruction added by ADD_WIDEN_OP */
8437                                         if (sp [1]->next == NULL)
8438                                                 sp [1]->opcode = OP_NOP;
8439                                 }
8440                         }
8441                         MONO_ADD_INS ((cfg)->cbb, (ins));
8442
8443                         *sp++ = mono_decompose_opcode (cfg, ins);
8444                         ip++;
8445                         break;
8446                 case CEE_NEG:
8447                 case CEE_NOT:
8448                 case CEE_CONV_I1:
8449                 case CEE_CONV_I2:
8450                 case CEE_CONV_I4:
8451                 case CEE_CONV_R4:
8452                 case CEE_CONV_R8:
8453                 case CEE_CONV_U4:
8454                 case CEE_CONV_I8:
8455                 case CEE_CONV_U8:
8456                 case CEE_CONV_OVF_I8:
8457                 case CEE_CONV_OVF_U8:
8458                 case CEE_CONV_R_UN:
8459                         CHECK_STACK (1);
8460
8461                         /* Special case this earlier so we have long constants in the IR */
8462                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
8463                                 int data = sp [-1]->inst_c0;
8464                                 sp [-1]->opcode = OP_I8CONST;
8465                                 sp [-1]->type = STACK_I8;
8466 #if SIZEOF_REGISTER == 8
8467                                 if ((*ip) == CEE_CONV_U8)
8468                                         sp [-1]->inst_c0 = (guint32)data;
8469                                 else
8470                                         sp [-1]->inst_c0 = data;
8471 #else
8472                                 sp [-1]->inst_ls_word = data;
8473                                 if ((*ip) == CEE_CONV_U8)
8474                                         sp [-1]->inst_ms_word = 0;
8475                                 else
8476                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
8477 #endif
8478                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
8479                         }
8480                         else {
8481                                 ADD_UNOP (*ip);
8482                         }
8483                         ip++;
8484                         break;
8485                 case CEE_CONV_OVF_I4:
8486                 case CEE_CONV_OVF_I1:
8487                 case CEE_CONV_OVF_I2:
8488                 case CEE_CONV_OVF_I:
8489                 case CEE_CONV_OVF_U:
8490                         CHECK_STACK (1);
8491
8492                         if (sp [-1]->type == STACK_R8) {
8493                                 ADD_UNOP (CEE_CONV_OVF_I8);
8494                                 ADD_UNOP (*ip);
8495                         } else {
8496                                 ADD_UNOP (*ip);
8497                         }
8498                         ip++;
8499                         break;
8500                 case CEE_CONV_OVF_U1:
8501                 case CEE_CONV_OVF_U2:
8502                 case CEE_CONV_OVF_U4:
8503                         CHECK_STACK (1);
8504
8505                         if (sp [-1]->type == STACK_R8) {
8506                                 ADD_UNOP (CEE_CONV_OVF_U8);
8507                                 ADD_UNOP (*ip);
8508                         } else {
8509                                 ADD_UNOP (*ip);
8510                         }
8511                         ip++;
8512                         break;
8513                 case CEE_CONV_OVF_I1_UN:
8514                 case CEE_CONV_OVF_I2_UN:
8515                 case CEE_CONV_OVF_I4_UN:
8516                 case CEE_CONV_OVF_I8_UN:
8517                 case CEE_CONV_OVF_U1_UN:
8518                 case CEE_CONV_OVF_U2_UN:
8519                 case CEE_CONV_OVF_U4_UN:
8520                 case CEE_CONV_OVF_U8_UN:
8521                 case CEE_CONV_OVF_I_UN:
8522                 case CEE_CONV_OVF_U_UN:
8523                 case CEE_CONV_U2:
8524                 case CEE_CONV_U1:
8525                 case CEE_CONV_I:
8526                 case CEE_CONV_U:
8527                         CHECK_STACK (1);
8528                         ADD_UNOP (*ip);
8529                         CHECK_CFG_EXCEPTION;
8530                         ip++;
8531                         break;
8532                 case CEE_ADD_OVF:
8533                 case CEE_ADD_OVF_UN:
8534                 case CEE_MUL_OVF:
8535                 case CEE_MUL_OVF_UN:
8536                 case CEE_SUB_OVF:
8537                 case CEE_SUB_OVF_UN:
8538                         CHECK_STACK (2);
8539                         ADD_BINOP (*ip);
8540                         ip++;
8541                         break;
8542                 case CEE_CPOBJ:
8543                         GSHAREDVT_FAILURE (*ip);
8544                         CHECK_OPSIZE (5);
8545                         CHECK_STACK (2);
8546                         token = read32 (ip + 1);
8547                         klass = mini_get_class (method, token, generic_context);
8548                         CHECK_TYPELOAD (klass);
8549                         sp -= 2;
8550                         if (generic_class_is_reference_type (cfg, klass)) {
8551                                 MonoInst *store, *load;
8552                                 int dreg = alloc_ireg_ref (cfg);
8553
8554                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
8555                                 load->flags |= ins_flag;
8556                                 MONO_ADD_INS (cfg->cbb, load);
8557
8558                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
8559                                 store->flags |= ins_flag;
8560                                 MONO_ADD_INS (cfg->cbb, store);
8561
8562                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
8563                                         emit_write_barrier (cfg, sp [0], sp [1], -1);
8564                         } else {
8565                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
8566                         }
8567                         ins_flag = 0;
8568                         ip += 5;
8569                         break;
8570                 case CEE_LDOBJ: {
8571                         int loc_index = -1;
8572                         int stloc_len = 0;
8573
8574                         CHECK_OPSIZE (5);
8575                         CHECK_STACK (1);
8576                         --sp;
8577                         token = read32 (ip + 1);
8578                         klass = mini_get_class (method, token, generic_context);
8579                         CHECK_TYPELOAD (klass);
8580
8581                         /* Optimize the common ldobj+stloc combination */
8582                         switch (ip [5]) {
8583                         case CEE_STLOC_S:
8584                                 loc_index = ip [6];
8585                                 stloc_len = 2;
8586                                 break;
8587                         case CEE_STLOC_0:
8588                         case CEE_STLOC_1:
8589                         case CEE_STLOC_2:
8590                         case CEE_STLOC_3:
8591                                 loc_index = ip [5] - CEE_STLOC_0;
8592                                 stloc_len = 1;
8593                                 break;
8594                         default:
8595                                 break;
8596                         }
8597
8598                         if ((loc_index != -1) && ip_in_bb (cfg, bblock, ip + 5)) {
8599                                 CHECK_LOCAL (loc_index);
8600
8601                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
8602                                 ins->dreg = cfg->locals [loc_index]->dreg;
8603                                 ip += 5;
8604                                 ip += stloc_len;
8605                                 break;
8606                         }
8607
8608                         /* Optimize the ldobj+stobj combination */
8609                         /* The reference case ends up being a load+store anyway */
8610                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass)) {
8611                                 CHECK_STACK (1);
8612
8613                                 sp --;
8614
8615                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
8616
8617                                 ip += 5 + 5;
8618                                 ins_flag = 0;
8619                                 break;
8620                         }
8621
8622                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
8623                         *sp++ = ins;
8624
8625                         ip += 5;
8626                         ins_flag = 0;
8627                         inline_costs += 1;
8628                         break;
8629                 }
8630                 case CEE_LDSTR:
8631                         CHECK_STACK_OVF (1);
8632                         CHECK_OPSIZE (5);
8633                         n = read32 (ip + 1);
8634
8635                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
8636                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
8637                                 ins->type = STACK_OBJ;
8638                                 *sp = ins;
8639                         }
8640                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
8641                                 MonoInst *iargs [1];
8642
8643                                 EMIT_NEW_PCONST (cfg, iargs [0], mono_method_get_wrapper_data (method, n));
8644                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
8645                         } else {
8646                                 if (cfg->opt & MONO_OPT_SHARED) {
8647                                         MonoInst *iargs [3];
8648
8649                                         if (cfg->compile_aot) {
8650                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
8651                                         }
8652                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
8653                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
8654                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
8655                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
8656                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
8657                                 } else {
8658                                         if (bblock->out_of_line) {
8659                                                 MonoInst *iargs [2];
8660
8661                                                 if (image == mono_defaults.corlib) {
8662                                                         /*
8663                                                          * Avoid relocations in AOT and save some space by using a
8664                                                          * version of helper_ldstr specialized to mscorlib.
8665                                                          */
8666                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
8667                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
8668                                                 } else {
8669                                                         /* Avoid creating the string object */
8670                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
8671                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
8672                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
8673                                                 }
8674                                         }
8675                                         else
8676                                         if (cfg->compile_aot) {
8677                                                 NEW_LDSTRCONST (cfg, ins, image, n);
8678                                                 *sp = ins;
8679                                                 MONO_ADD_INS (bblock, ins);
8680                                         }
8681                                         else {
8682                                                 NEW_PCONST (cfg, ins, NULL);
8683                                                 ins->type = STACK_OBJ;
8684                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
8685                                                 if (!ins->inst_p0)
8686                                                         OUT_OF_MEMORY_FAILURE;
8687
8688                                                 *sp = ins;
8689                                                 MONO_ADD_INS (bblock, ins);
8690                                         }
8691                                 }
8692                         }
8693
8694                         sp++;
8695                         ip += 5;
8696                         break;
8697                 case CEE_NEWOBJ: {
8698                         MonoInst *iargs [2];
8699                         MonoMethodSignature *fsig;
8700                         MonoInst this_ins;
8701                         MonoInst *alloc;
8702                         MonoInst *vtable_arg = NULL;
8703
8704                         CHECK_OPSIZE (5);
8705                         token = read32 (ip + 1);
8706                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8707                         if (!cmethod || mono_loader_get_last_error ())
8708                                 LOAD_ERROR;
8709                         fsig = mono_method_get_signature (cmethod, image, token);
8710                         if (!fsig)
8711                                 LOAD_ERROR;
8712
8713                         mono_save_token_info (cfg, image, token, cmethod);
8714
8715                         if (!mono_class_init (cmethod->klass))
8716                                 TYPE_LOAD_ERROR (cmethod->klass);
8717
8718                         context_used = mini_method_check_context_used (cfg, cmethod);
8719
8720                         if (mono_security_cas_enabled ()) {
8721                                 if (check_linkdemand (cfg, method, cmethod))
8722                                         INLINE_FAILURE ("linkdemand");
8723                                 CHECK_CFG_EXCEPTION;
8724                         } else if (mono_security_core_clr_enabled ()) {
8725                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
8726                         }
8727
8728                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable_impl (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8729                                 emit_generic_class_init (cfg, cmethod->klass);
8730                                 CHECK_TYPELOAD (cmethod->klass);
8731                         }
8732
8733                         /*
8734                         if (cfg->gsharedvt) {
8735                                 if (mini_is_gsharedvt_variable_signature (sig))
8736                                         GSHAREDVT_FAILURE (*ip);
8737                         }
8738                         */
8739
8740                         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8741                                         mono_method_is_generic_sharable_impl (cmethod, TRUE)) {
8742                                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8743                                         mono_class_vtable (cfg->domain, cmethod->klass);
8744                                         CHECK_TYPELOAD (cmethod->klass);
8745
8746                                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8747                                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8748                                 } else {
8749                                         if (context_used) {
8750                                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8751                                                         cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8752                                         } else {
8753                                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8754
8755                                                 CHECK_TYPELOAD (cmethod->klass);
8756                                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8757                                         }
8758                                 }
8759                         }
8760
8761                         n = fsig->param_count;
8762                         CHECK_STACK (n);
8763
8764                         /*
8765                          * Generate smaller code for the common newobj <exception> instruction in
8766                          * argument checking code.
8767                          */
8768                         if (bblock->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
8769                                 is_exception_class (cmethod->klass) && n <= 2 &&
8770                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
8771                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
8772                                 MonoInst *iargs [3];
8773
8774                                 g_assert (!vtable_arg);
8775
8776                                 sp -= n;
8777
8778                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
8779                                 switch (n) {
8780                                 case 0:
8781                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
8782                                         break;
8783                                 case 1:
8784                                         iargs [1] = sp [0];
8785                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
8786                                         break;
8787                                 case 2:
8788                                         iargs [1] = sp [0];
8789                                         iargs [2] = sp [1];
8790                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
8791                                         break;
8792                                 default:
8793                                         g_assert_not_reached ();
8794                                 }
8795
8796                                 ip += 5;
8797                                 inline_costs += 5;
8798                                 break;
8799                         }
8800
8801                         /* move the args to allow room for 'this' in the first position */
8802                         while (n--) {
8803                                 --sp;
8804                                 sp [1] = sp [0];
8805                         }
8806
8807                         /* check_call_signature () requires sp[0] to be set */
8808                         this_ins.type = STACK_OBJ;
8809                         sp [0] = &this_ins;
8810                         if (check_call_signature (cfg, fsig, sp))
8811                                 UNVERIFIED;
8812
8813                         iargs [0] = NULL;
8814
8815                         if (mini_class_is_system_array (cmethod->klass)) {
8816                                 g_assert (!vtable_arg);
8817
8818                                 *sp = emit_get_rgctx_method (cfg, context_used,
8819                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8820
8821                                 /* Avoid varargs in the common case */
8822                                 if (fsig->param_count == 1)
8823                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
8824                                 else if (fsig->param_count == 2)
8825                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
8826                                 else if (fsig->param_count == 3)
8827                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
8828                                 else if (fsig->param_count == 4)
8829                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
8830                                 else
8831                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
8832                         } else if (cmethod->string_ctor) {
8833                                 g_assert (!context_used);
8834                                 g_assert (!vtable_arg);
8835                                 /* we simply pass a null pointer */
8836                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
8837                                 /* now call the string ctor */
8838                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, sp, NULL, NULL, NULL);
8839                         } else {
8840                                 MonoInst* callvirt_this_arg = NULL;
8841
8842                                 if (cmethod->klass->valuetype) {
8843                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
8844                                         MONO_EMIT_NEW_VZERO (cfg, iargs [0]->dreg, cmethod->klass);
8845                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
8846
8847                                         alloc = NULL;
8848
8849                                         /*
8850                                          * The code generated by mini_emit_virtual_call () expects
8851                                          * iargs [0] to be a boxed instance, but luckily the vcall
8852                                          * will be transformed into a normal call there.
8853                                          */
8854                                 } else if (context_used) {
8855                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
8856                                         *sp = alloc;
8857                                 } else {
8858                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8859
8860                                         CHECK_TYPELOAD (cmethod->klass);
8861
8862                                         /*
8863                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
8864                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
8865                                          * As a workaround, we call class cctors before allocating objects.
8866                                          */
8867                                         if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
8868                                                 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
8869                                                 if (cfg->verbose_level > 2)
8870                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
8871                                                 class_inits = g_slist_prepend (class_inits, vtable);
8872                                         }
8873
8874                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
8875                                         *sp = alloc;
8876                                 }
8877                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
8878
8879                                 if (alloc)
8880                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
8881
8882                                 /* Now call the actual ctor */
8883                                 /* Avoid virtual calls to ctors if possible */
8884                                 if (mono_class_is_marshalbyref (cmethod->klass))
8885                                         callvirt_this_arg = sp [0];
8886
8887
8888                                 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8889                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8890                                                 type_to_eval_stack_type ((cfg), fsig->ret, ins);
8891                                                 *sp = ins;
8892                                                 sp++;
8893                                         }
8894
8895                                         CHECK_CFG_EXCEPTION;
8896                                 } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8897                                     !disable_inline && mono_method_check_inlining (cfg, cmethod) &&
8898                                     !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE) &&
8899                                     !g_list_find (dont_inline, cmethod)) {
8900                                         int costs;
8901
8902                                         if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, FALSE))) {
8903                                                 cfg->real_offset += 5;
8904                                                 bblock = cfg->cbb;
8905
8906                                                 inline_costs += costs - 5;
8907                                         } else {
8908                                                 INLINE_FAILURE ("inline failure");
8909                                                 // FIXME-VT: Clean this up
8910                                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
8911                                                         GSHAREDVT_FAILURE(*ip);
8912                                                 mono_emit_method_call_full (cfg, cmethod, fsig, sp, callvirt_this_arg, NULL, NULL);
8913                                         }
8914                                 } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
8915                                         MonoInst *addr;
8916
8917                                         addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8918                                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8919                                 } else if (context_used &&
8920                                                 (!mono_method_is_generic_sharable_impl (cmethod, TRUE) ||
8921                                                         !mono_class_generic_sharing_enabled (cmethod->klass))) {
8922                                         MonoInst *cmethod_addr;
8923
8924                                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8925                                                 cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8926
8927                                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8928                                 } else {
8929                                         INLINE_FAILURE ("ctor call");
8930                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, sp,
8931                                                                                                           callvirt_this_arg, NULL, vtable_arg);
8932                                 }
8933                         }
8934
8935                         if (alloc == NULL) {
8936                                 /* Valuetype */
8937                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
8938                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
8939                                 *sp++= ins;
8940                         }
8941                         else
8942                                 *sp++ = alloc;
8943
8944                         ip += 5;
8945                         inline_costs += 5;
8946                         break;
8947                 }
8948                 case CEE_CASTCLASS:
8949                         CHECK_STACK (1);
8950                         --sp;
8951                         CHECK_OPSIZE (5);
8952                         token = read32 (ip + 1);
8953                         klass = mini_get_class (method, token, generic_context);
8954                         CHECK_TYPELOAD (klass);
8955                         if (sp [0]->type != STACK_OBJ)
8956                                 UNVERIFIED;
8957
8958                         context_used = mini_class_check_context_used (cfg, klass);
8959
8960                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
8961                                 MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
8962                                 MonoInst *args [3];
8963
8964                                 /* obj */
8965                                 args [0] = *sp;
8966
8967                                 /* klass */
8968                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
8969
8970                                 /* inline cache*/
8971                                 if (cfg->compile_aot)
8972                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
8973                                 else
8974                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
8975
8976                                 /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
8977                                 *sp++ = mono_emit_method_call (cfg, mono_castclass, args, NULL);
8978                                 ip += 5;
8979                                 inline_costs += 2;
8980                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8981                                 MonoMethod *mono_castclass;
8982                                 MonoInst *iargs [1];
8983                                 int costs;
8984
8985                                 mono_castclass = mono_marshal_get_castclass (klass);
8986                                 iargs [0] = sp [0];
8987
8988                                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
8989                                                            iargs, ip, cfg->real_offset, dont_inline, TRUE);
8990                                 CHECK_CFG_EXCEPTION;
8991                                 g_assert (costs > 0);
8992
8993                                 ip += 5;
8994                                 cfg->real_offset += 5;
8995                                 bblock = cfg->cbb;
8996
8997                                 *sp++ = iargs [0];
8998
8999                                 inline_costs += costs;
9000                         }
9001                         else {
9002                                 ins = handle_castclass (cfg, klass, *sp, context_used);
9003                                 CHECK_CFG_EXCEPTION;
9004                                 bblock = cfg->cbb;
9005                                 *sp ++ = ins;
9006                                 ip += 5;
9007                         }
9008                         break;
9009                 case CEE_ISINST: {
9010                         CHECK_STACK (1);
9011                         --sp;
9012                         CHECK_OPSIZE (5);
9013                         token = read32 (ip + 1);
9014                         klass = mini_get_class (method, token, generic_context);
9015                         CHECK_TYPELOAD (klass);
9016                         if (sp [0]->type != STACK_OBJ)
9017                                 UNVERIFIED;
9018
9019                         context_used = mini_class_check_context_used (cfg, klass);
9020
9021                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
9022                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
9023                                 MonoInst *args [3];
9024
9025                                 /* obj */
9026                                 args [0] = *sp;
9027
9028                                 /* klass */
9029                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
9030
9031                                 /* inline cache*/
9032                                 if (cfg->compile_aot)
9033                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
9034                                 else
9035                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
9036
9037                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
9038                                 ip += 5;
9039                                 inline_costs += 2;
9040                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9041                                 MonoMethod *mono_isinst;
9042                                 MonoInst *iargs [1];
9043                                 int costs;
9044
9045                                 mono_isinst = mono_marshal_get_isinst (klass);
9046                                 iargs [0] = sp [0];
9047
9048                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
9049                                                            iargs, ip, cfg->real_offset, dont_inline, TRUE);
9050                                 CHECK_CFG_EXCEPTION;
9051                                 g_assert (costs > 0);
9052
9053                                 ip += 5;
9054                                 cfg->real_offset += 5;
9055                                 bblock = cfg->cbb;
9056
9057                                 *sp++= iargs [0];
9058
9059                                 inline_costs += costs;
9060                         }
9061                         else {
9062                                 ins = handle_isinst (cfg, klass, *sp, context_used);
9063                                 CHECK_CFG_EXCEPTION;
9064                                 bblock = cfg->cbb;
9065                                 *sp ++ = ins;
9066                                 ip += 5;
9067                         }
9068                         break;
9069                 }
9070                 case CEE_UNBOX_ANY: {
9071                         CHECK_STACK (1);
9072                         --sp;
9073                         CHECK_OPSIZE (5);
9074                         token = read32 (ip + 1);
9075                         klass = mini_get_class (method, token, generic_context);
9076                         CHECK_TYPELOAD (klass);
9077
9078                         mono_save_token_info (cfg, image, token, klass);
9079
9080                         context_used = mini_class_check_context_used (cfg, klass);
9081
9082                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9083                                 MonoInst *obj, *addr, *klass_inst, *args[16];
9084                                 int dreg;
9085
9086                                 /* Need to check for nullable types at runtime, but those are disabled in mini_is_gsharedvt_sharable_method*/
9087                                 if (mono_class_is_nullable (klass))
9088                                         GSHAREDVT_FAILURE (*ip);
9089
9090                                 obj = *sp;
9091
9092                                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
9093
9094                                 /* obj */
9095                                 args [0] = obj;
9096
9097                                 /* klass */
9098                                 args [1] = klass_inst;
9099
9100                                 /* CASTCLASS */
9101                                 obj = mono_emit_jit_icall (cfg, mono_object_castclass, args);
9102
9103                                 /* UNBOX */
9104                                 dreg = alloc_dreg (cfg, STACK_MP);
9105                                 NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, dreg, obj->dreg, sizeof (MonoObject));
9106                                 MONO_ADD_INS (cfg->cbb, addr);
9107
9108                                 /* LDOBJ */
9109                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
9110                                 *sp++ = ins;
9111
9112                                 ip += 5;
9113                                 inline_costs += 2;
9114                                 break;
9115                         }
9116
9117                         if (generic_class_is_reference_type (cfg, klass)) {
9118                                 /* CASTCLASS FIXME kill this huge slice of duplicated code*/
9119                                 if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
9120                                         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
9121                                         MonoInst *args [3];
9122
9123                                         /* obj */
9124                                         args [0] = *sp;
9125
9126                                         /* klass */
9127                                         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
9128
9129                                         /* inline cache*/
9130                                         /*FIXME AOT support*/
9131                                         if (cfg->compile_aot)
9132                                                 EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
9133                                         else
9134                                                 EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
9135
9136                                         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
9137                                         *sp++ = mono_emit_method_call (cfg, mono_castclass, args, NULL);
9138                                         ip += 5;
9139                                         inline_costs += 2;
9140                                 } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9141                                         MonoMethod *mono_castclass;
9142                                         MonoInst *iargs [1];
9143                                         int costs;
9144
9145                                         mono_castclass = mono_marshal_get_castclass (klass);
9146                                         iargs [0] = sp [0];
9147
9148                                         costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
9149                                                                                    iargs, ip, cfg->real_offset, dont_inline, TRUE);
9150                                         CHECK_CFG_EXCEPTION;
9151                                         g_assert (costs > 0);
9152
9153                                         ip += 5;
9154                                         cfg->real_offset += 5;
9155                                         bblock = cfg->cbb;
9156
9157                                         *sp++ = iargs [0];
9158                                         inline_costs += costs;
9159                                 } else {
9160                                         ins = handle_castclass (cfg, klass, *sp, context_used);
9161                                         CHECK_CFG_EXCEPTION;
9162                                         bblock = cfg->cbb;
9163                                         *sp ++ = ins;
9164                                         ip += 5;
9165                                 }
9166                                 break;
9167                         }
9168
9169                         if (mono_class_is_nullable (klass)) {
9170                                 ins = handle_unbox_nullable (cfg, *sp, klass, context_used);
9171                                 *sp++= ins;
9172                                 ip += 5;
9173                                 break;
9174                         }
9175
9176                         /* UNBOX */
9177                         ins = handle_unbox (cfg, klass, sp, context_used);
9178                         *sp = ins;
9179
9180                         ip += 5;
9181
9182                         /* LDOBJ */
9183                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9184                         *sp++ = ins;
9185
9186                         inline_costs += 2;
9187                         break;
9188                 }
9189                 case CEE_BOX: {
9190                         MonoInst *val;
9191
9192                         CHECK_STACK (1);
9193                         --sp;
9194                         val = *sp;
9195                         CHECK_OPSIZE (5);
9196                         token = read32 (ip + 1);
9197                         klass = mini_get_class (method, token, generic_context);
9198                         CHECK_TYPELOAD (klass);
9199
9200                         mono_save_token_info (cfg, image, token, klass);
9201
9202                         context_used = mini_class_check_context_used (cfg, klass);
9203
9204                         if (generic_class_is_reference_type (cfg, klass)) {
9205                                 *sp++ = val;
9206                                 ip += 5;
9207                                 break;
9208                         }
9209
9210                         if (klass == mono_defaults.void_class)
9211                                 UNVERIFIED;
9212                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
9213                                 UNVERIFIED;
9214                         /* frequent check in generic code: box (struct), brtrue */
9215
9216                         // FIXME: LLVM can't handle the inconsistent bb linking
9217                         if (!mono_class_is_nullable (klass) &&
9218                                 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) &&
9219                                 (ip [5] == CEE_BRTRUE ||
9220                                  ip [5] == CEE_BRTRUE_S ||
9221                                  ip [5] == CEE_BRFALSE ||
9222                                  ip [5] == CEE_BRFALSE_S)) {
9223                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
9224                                 int dreg;
9225                                 MonoBasicBlock *true_bb, *false_bb;
9226
9227                                 ip += 5;
9228
9229                                 if (cfg->verbose_level > 3) {
9230                                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
9231                                         printf ("<box+brtrue opt>\n");
9232                                 }
9233
9234                                 switch (*ip) {
9235                                 case CEE_BRTRUE_S:
9236                                 case CEE_BRFALSE_S:
9237                                         CHECK_OPSIZE (2);
9238                                         ip++;
9239                                         target = ip + 1 + (signed char)(*ip);
9240                                         ip++;
9241                                         break;
9242                                 case CEE_BRTRUE:
9243                                 case CEE_BRFALSE:
9244                                         CHECK_OPSIZE (5);
9245                                         ip++;
9246                                         target = ip + 4 + (gint)(read32 (ip));
9247                                         ip += 4;
9248                                         break;
9249                                 default:
9250                                         g_assert_not_reached ();
9251                                 }
9252
9253                                 /*
9254                                  * We need to link both bblocks, since it is needed for handling stack
9255                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
9256                                  * Branching to only one of them would lead to inconsistencies, so
9257                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
9258                                  */
9259                                 GET_BBLOCK (cfg, true_bb, target);
9260                                 GET_BBLOCK (cfg, false_bb, ip);
9261
9262                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
9263                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
9264
9265                                 if (sp != stack_start) {
9266                                         handle_stack_args (cfg, stack_start, sp - stack_start);
9267                                         sp = stack_start;
9268                                         CHECK_UNVERIFIABLE (cfg);
9269                                 }
9270
9271                                 if (COMPILE_LLVM (cfg)) {
9272                                         dreg = alloc_ireg (cfg);
9273                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
9274                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
9275
9276                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
9277                                 } else {
9278                                         /* The JIT can't eliminate the iconst+compare */
9279                                         MONO_INST_NEW (cfg, ins, OP_BR);
9280                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
9281                                         MONO_ADD_INS (cfg->cbb, ins);
9282                                 }
9283
9284                                 start_new_bblock = 1;
9285                                 break;
9286                         }
9287
9288                         *sp++ = handle_box (cfg, val, klass, context_used);
9289                         bblock = cfg->cbb;
9290
9291                         CHECK_CFG_EXCEPTION;
9292                         ip += 5;
9293                         inline_costs += 1;
9294                         break;
9295                 }
9296                 case CEE_UNBOX: {
9297                         CHECK_STACK (1);
9298                         --sp;
9299                         CHECK_OPSIZE (5);
9300                         token = read32 (ip + 1);
9301                         klass = mini_get_class (method, token, generic_context);
9302                         CHECK_TYPELOAD (klass);
9303
9304                         mono_save_token_info (cfg, image, token, klass);
9305
9306                         context_used = mini_class_check_context_used (cfg, klass);
9307
9308                         if (mono_class_is_nullable (klass)) {
9309                                 MonoInst *val;
9310
9311                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
9312                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
9313
9314                                 *sp++= ins;
9315                         } else {
9316                                 ins = handle_unbox (cfg, klass, sp, context_used);
9317                                 *sp++ = ins;
9318                         }
9319                         ip += 5;
9320                         inline_costs += 2;
9321                         break;
9322                 }
9323                 case CEE_LDFLD:
9324                 case CEE_LDFLDA:
9325                 case CEE_STFLD:
9326                 case CEE_LDSFLD:
9327                 case CEE_LDSFLDA:
9328                 case CEE_STSFLD: {
9329                         MonoClassField *field;
9330 #ifndef DISABLE_REMOTING
9331                         int costs;
9332 #endif
9333                         guint foffset;
9334                         gboolean is_instance;
9335                         int op;
9336                         gpointer addr = NULL;
9337                         gboolean is_special_static;
9338                         MonoType *ftype;
9339                         MonoInst *store_val = NULL;
9340
9341                         op = *ip;
9342                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
9343                         if (is_instance) {
9344                                 if (op == CEE_STFLD) {
9345                                         CHECK_STACK (2);
9346                                         sp -= 2;
9347                                         store_val = sp [1];
9348                                 } else {
9349                                         CHECK_STACK (1);
9350                                         --sp;
9351                                 }
9352                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
9353                                         UNVERIFIED;
9354                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
9355                                         UNVERIFIED;
9356                         } else {
9357                                 if (op == CEE_STSFLD) {
9358                                         CHECK_STACK (1);
9359                                         sp--;
9360                                         store_val = sp [0];
9361                                 }
9362                         }
9363
9364                         CHECK_OPSIZE (5);
9365                         token = read32 (ip + 1);
9366                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
9367                                 field = mono_method_get_wrapper_data (method, token);
9368                                 klass = field->parent;
9369                         }
9370                         else {
9371                                 field = mono_field_from_token (image, token, &klass, generic_context);
9372                         }
9373                         if (!field)
9374                                 LOAD_ERROR;
9375                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
9376                                 FIELD_ACCESS_FAILURE;
9377                         mono_class_init (klass);
9378
9379                         if (is_instance && *ip != CEE_LDFLDA && is_magic_tls_access (field))
9380                                 UNVERIFIED;
9381
9382                         /* if the class is Critical then transparent code cannot access it's fields */
9383                         if (!is_instance && mono_security_core_clr_enabled ())
9384                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
9385
9386                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
9387                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
9388                         if (mono_security_core_clr_enabled ())
9389                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
9390                         */
9391
9392                         /*
9393                          * LDFLD etc. is usable on static fields as well, so convert those cases to
9394                          * the static case.
9395                          */
9396                         if (is_instance && field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
9397                                 switch (op) {
9398                                 case CEE_LDFLD:
9399                                         op = CEE_LDSFLD;
9400                                         break;
9401                                 case CEE_STFLD:
9402                                         op = CEE_STSFLD;
9403                                         break;
9404                                 case CEE_LDFLDA:
9405                                         op = CEE_LDSFLDA;
9406                                         break;
9407                                 default:
9408                                         g_assert_not_reached ();
9409                                 }
9410                                 is_instance = FALSE;
9411                         }
9412
9413                         context_used = mini_class_check_context_used (cfg, klass);
9414
9415                         /* INSTANCE CASE */
9416
9417                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
9418                         if (op == CEE_STFLD) {
9419                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
9420                                         UNVERIFIED;
9421 #ifndef DISABLE_REMOTING
9422                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
9423                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
9424                                         MonoInst *iargs [5];
9425
9426                                         GSHAREDVT_FAILURE (op);
9427
9428                                         iargs [0] = sp [0];
9429                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
9430                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
9431                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
9432                                                     field->offset);
9433                                         iargs [4] = sp [1];
9434
9435                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
9436                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
9437                                                                        iargs, ip, cfg->real_offset, dont_inline, TRUE);
9438                                                 CHECK_CFG_EXCEPTION;
9439                                                 g_assert (costs > 0);
9440
9441                                                 cfg->real_offset += 5;
9442                                                 bblock = cfg->cbb;
9443
9444                                                 inline_costs += costs;
9445                                         } else {
9446                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
9447                                         }
9448                                 } else
9449 #endif
9450                                 {
9451                                         MonoInst *store;
9452
9453                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
9454
9455                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9456                                                 MonoInst *offset_ins;
9457
9458                                                 context_used = mini_class_check_context_used (cfg, klass);
9459
9460                                                 offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9461                                                 dreg = alloc_ireg_mp (cfg);
9462                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9463                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
9464                                                 // FIXME-VT: wbarriers ?
9465                                         } else {
9466                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
9467                                         }
9468                                         if (sp [0]->opcode != OP_LDADDR)
9469                                                 store->flags |= MONO_INST_FAULT;
9470
9471                                 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)) {
9472                                         /* insert call to write barrier */
9473                                         MonoInst *ptr;
9474                                         int dreg;
9475
9476                                         dreg = alloc_ireg_mp (cfg);
9477                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
9478                                         emit_write_barrier (cfg, ptr, sp [1], -1);
9479                                 }
9480
9481                                         store->flags |= ins_flag;
9482                                 }
9483                                 ins_flag = 0;
9484                                 ip += 5;
9485                                 break;
9486                         }
9487
9488 #ifndef DISABLE_REMOTING
9489                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
9490                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
9491                                 MonoInst *iargs [4];
9492
9493                                 GSHAREDVT_FAILURE (op);
9494
9495                                 iargs [0] = sp [0];
9496                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
9497                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
9498                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
9499                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
9500                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
9501                                                                                    iargs, ip, cfg->real_offset, dont_inline, TRUE);
9502                                         CHECK_CFG_EXCEPTION;
9503                                         bblock = cfg->cbb;
9504                                         g_assert (costs > 0);
9505
9506                                         cfg->real_offset += 5;
9507
9508                                         *sp++ = iargs [0];
9509
9510                                         inline_costs += costs;
9511                                 } else {
9512                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
9513                                         *sp++ = ins;
9514                                 }
9515                         } else
9516 #endif
9517                         if (is_instance) {
9518                                 if (sp [0]->type == STACK_VTYPE) {
9519                                         MonoInst *var;
9520
9521                                         /* Have to compute the address of the variable */
9522
9523                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
9524                                         if (!var)
9525                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
9526                                         else
9527                                                 g_assert (var->klass == klass);
9528
9529                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
9530                                         sp [0] = ins;
9531                                 }
9532
9533                                 if (op == CEE_LDFLDA) {
9534                                         if (is_magic_tls_access (field)) {
9535                                                 GSHAREDVT_FAILURE (*ip);
9536                                                 ins = sp [0];
9537                                                 *sp++ = create_magic_tls_access (cfg, field, &cached_tls_addr, ins);
9538                                         } else {
9539                                                 if (sp [0]->type == STACK_OBJ) {
9540                                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
9541                                                         MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
9542                                                 }
9543
9544                                                 dreg = alloc_ireg_mp (cfg);
9545
9546                                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
9547                                                         MonoInst *offset_ins;
9548
9549                                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9550                                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9551                                                 } else {
9552                                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
9553                                                 }
9554                                                 ins->klass = mono_class_from_mono_type (field->type);
9555                                                 ins->type = STACK_MP;
9556                                                 *sp++ = ins;
9557                                         }
9558                                 } else {
9559                                         MonoInst *load;
9560
9561                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
9562
9563                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9564                                                 MonoInst *offset_ins;
9565
9566                                                 offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9567                                                 dreg = alloc_ireg_mp (cfg);
9568                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9569                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
9570                                         } else {
9571                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
9572                                         }
9573                                         load->flags |= ins_flag;
9574                                         if (sp [0]->opcode != OP_LDADDR)
9575                                                 load->flags |= MONO_INST_FAULT;
9576                                         *sp++ = load;
9577                                 }
9578                         }
9579
9580                         if (is_instance) {
9581                                 ins_flag = 0;
9582                                 ip += 5;
9583                                 break;
9584                         }
9585
9586                         /* STATIC CASE */
9587
9588                         /*
9589                          * We can only support shared generic static
9590                          * field access on architectures where the
9591                          * trampoline code has been extended to handle
9592                          * the generic class init.
9593                          */
9594 #ifndef MONO_ARCH_VTABLE_REG
9595                         GENERIC_SHARING_FAILURE (op);
9596 #endif
9597
9598                         context_used = mini_class_check_context_used (cfg, klass);
9599
9600                         ftype = mono_field_get_type (field);
9601
9602                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
9603                                 UNVERIFIED;
9604
9605                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
9606                          * to be called here.
9607                          */
9608                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
9609                                 mono_class_vtable (cfg->domain, klass);
9610                                 CHECK_TYPELOAD (klass);
9611                         }
9612                         mono_domain_lock (cfg->domain);
9613                         if (cfg->domain->special_static_fields)
9614                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
9615                         mono_domain_unlock (cfg->domain);
9616
9617                         is_special_static = mono_class_field_is_special_static (field);
9618
9619                         /* Generate IR to compute the field address */
9620                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && mono_get_thread_intrinsic (cfg) && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
9621                                 /*
9622                                  * Fast access to TLS data
9623                                  * Inline version of get_thread_static_data () in
9624                                  * threads.c.
9625                                  */
9626                                 guint32 offset;
9627                                 int idx, static_data_reg, array_reg, dreg;
9628                                 MonoInst *thread_ins;
9629
9630                                 GSHAREDVT_FAILURE (op);
9631
9632                                 // offset &= 0x7fffffff;
9633                                 // idx = (offset >> 24) - 1;
9634                                 //      return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
9635
9636                                 thread_ins = mono_get_thread_intrinsic (cfg);
9637                                 MONO_ADD_INS (cfg->cbb, thread_ins);
9638                                 static_data_reg = alloc_ireg (cfg);
9639                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
9640
9641                                 if (cfg->compile_aot) {
9642                                         int offset_reg, offset2_reg, idx_reg;
9643
9644                                         /* For TLS variables, this will return the TLS offset */
9645                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
9646                                         offset_reg = ins->dreg;
9647                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
9648                                         idx_reg = alloc_ireg (cfg);
9649                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
9650                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
9651                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
9652                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
9653                                         array_reg = alloc_ireg (cfg);
9654                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
9655                                         offset2_reg = alloc_ireg (cfg);
9656                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
9657                                         dreg = alloc_ireg (cfg);
9658                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
9659                                 } else {
9660                                         offset = (gsize)addr & 0x7fffffff;
9661                                         idx = (offset >> 24) - 1;
9662
9663                                         array_reg = alloc_ireg (cfg);
9664                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
9665                                         dreg = alloc_ireg (cfg);
9666                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, (offset & 0xffffff));
9667                                 }
9668                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
9669                                         (cfg->compile_aot && is_special_static) ||
9670                                         (context_used && is_special_static)) {
9671                                 MonoInst *iargs [2];
9672
9673                                 g_assert (field->parent);
9674                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9675                                 if (context_used) {
9676                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
9677                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
9678                                 } else {
9679                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
9680                                 }
9681                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
9682                         } else if (context_used) {
9683                                 MonoInst *static_data;
9684
9685                                 /*
9686                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
9687                                         method->klass->name_space, method->klass->name, method->name,
9688                                         depth, field->offset);
9689                                 */
9690
9691                                 if (mono_class_needs_cctor_run (klass, method))
9692                                         emit_generic_class_init (cfg, klass);
9693
9694                                 /*
9695                                  * The pointer we're computing here is
9696                                  *
9697                                  *   super_info.static_data + field->offset
9698                                  */
9699                                 static_data = emit_get_rgctx_klass (cfg, context_used,
9700                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
9701
9702                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
9703                                         MonoInst *offset_ins;
9704
9705                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9706                                         dreg = alloc_ireg_mp (cfg);
9707                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
9708                                 } else if (field->offset == 0) {
9709                                         ins = static_data;
9710                                 } else {
9711                                         int addr_reg = mono_alloc_preg (cfg);
9712                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
9713                                 }
9714                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
9715                                 MonoInst *iargs [2];
9716
9717                                 g_assert (field->parent);
9718                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9719                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
9720                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
9721                         } else {
9722                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
9723
9724                                 CHECK_TYPELOAD (klass);
9725                                 if (!addr) {
9726                                         if (mini_field_access_needs_cctor_run (cfg, method, vtable)) {
9727                                                 if (!(g_slist_find (class_inits, vtable))) {
9728                                                         mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
9729                                                         if (cfg->verbose_level > 2)
9730                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
9731                                                         class_inits = g_slist_prepend (class_inits, vtable);
9732                                                 }
9733                                         } else {
9734                                                 if (cfg->run_cctors) {
9735                                                         MonoException *ex;
9736                                                         /* This makes so that inline cannot trigger */
9737                                                         /* .cctors: too many apps depend on them */
9738                                                         /* running with a specific order... */
9739                                                         if (! vtable->initialized)
9740                                                                 INLINE_FAILURE ("class init");
9741                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
9742                                                         if (ex) {
9743                                                                 set_exception_object (cfg, ex);
9744                                                                 goto exception_exit;
9745                                                         }
9746                                                 }
9747                                         }
9748                                         addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
9749
9750                                         if (cfg->compile_aot)
9751                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
9752                                         else
9753                                                 EMIT_NEW_PCONST (cfg, ins, addr);
9754                                 } else {
9755                                         MonoInst *iargs [1];
9756                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
9757                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
9758                                 }
9759                         }
9760
9761                         /* Generate IR to do the actual load/store operation */
9762
9763                         if (op == CEE_LDSFLDA) {
9764                                 ins->klass = mono_class_from_mono_type (ftype);
9765                                 ins->type = STACK_PTR;
9766                                 *sp++ = ins;
9767                         } else if (op == CEE_STSFLD) {
9768                                 MonoInst *store;
9769
9770                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
9771                                 store->flags |= ins_flag;
9772                         } else {
9773                                 gboolean is_const = FALSE;
9774                                 MonoVTable *vtable = NULL;
9775                                 gpointer addr = NULL;
9776
9777                                 if (!context_used) {
9778                                         vtable = mono_class_vtable (cfg->domain, klass);
9779                                         CHECK_TYPELOAD (klass);
9780                                 }
9781                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
9782                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
9783                                         int ro_type = ftype->type;
9784                                         if (!addr)
9785                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
9786                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
9787                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
9788                                         }
9789
9790                                         GSHAREDVT_FAILURE (op);
9791
9792                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
9793                                         is_const = TRUE;
9794                                         switch (ro_type) {
9795                                         case MONO_TYPE_BOOLEAN:
9796                                         case MONO_TYPE_U1:
9797                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
9798                                                 sp++;
9799                                                 break;
9800                                         case MONO_TYPE_I1:
9801                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
9802                                                 sp++;
9803                                                 break;
9804                                         case MONO_TYPE_CHAR:
9805                                         case MONO_TYPE_U2:
9806                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
9807                                                 sp++;
9808                                                 break;
9809                                         case MONO_TYPE_I2:
9810                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
9811                                                 sp++;
9812                                                 break;
9813                                                 break;
9814                                         case MONO_TYPE_I4:
9815                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
9816                                                 sp++;
9817                                                 break;
9818                                         case MONO_TYPE_U4:
9819                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
9820                                                 sp++;
9821                                                 break;
9822                                         case MONO_TYPE_I:
9823                                         case MONO_TYPE_U:
9824                                         case MONO_TYPE_PTR:
9825                                         case MONO_TYPE_FNPTR:
9826                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
9827                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
9828                                                 sp++;
9829                                                 break;
9830                                         case MONO_TYPE_STRING:
9831                                         case MONO_TYPE_OBJECT:
9832                                         case MONO_TYPE_CLASS:
9833                                         case MONO_TYPE_SZARRAY:
9834                                         case MONO_TYPE_ARRAY:
9835                                                 if (!mono_gc_is_moving ()) {
9836                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
9837                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
9838                                                         sp++;
9839                                                 } else {
9840                                                         is_const = FALSE;
9841                                                 }
9842                                                 break;
9843                                         case MONO_TYPE_I8:
9844                                         case MONO_TYPE_U8:
9845                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
9846                                                 sp++;
9847                                                 break;
9848                                         case MONO_TYPE_R4:
9849                                         case MONO_TYPE_R8:
9850                                         case MONO_TYPE_VALUETYPE:
9851                                         default:
9852                                                 is_const = FALSE;
9853                                                 break;
9854                                         }
9855                                 }
9856
9857                                 if (!is_const) {
9858                                         MonoInst *load;
9859
9860                                         CHECK_STACK_OVF (1);
9861
9862                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
9863                                         load->flags |= ins_flag;
9864                                         ins_flag = 0;
9865                                         *sp++ = load;
9866                                 }
9867                         }
9868                         ins_flag = 0;
9869                         ip += 5;
9870                         break;
9871                 }
9872                 case CEE_STOBJ:
9873                         CHECK_STACK (2);
9874                         sp -= 2;
9875                         CHECK_OPSIZE (5);
9876                         token = read32 (ip + 1);
9877                         klass = mini_get_class (method, token, generic_context);
9878                         CHECK_TYPELOAD (klass);
9879                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
9880                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
9881                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
9882                                         generic_class_is_reference_type (cfg, klass)) {
9883                                 /* insert call to write barrier */
9884                                 emit_write_barrier (cfg, sp [0], sp [1], -1);
9885                         }
9886                         ins_flag = 0;
9887                         ip += 5;
9888                         inline_costs += 1;
9889                         break;
9890
9891                         /*
9892                          * Array opcodes
9893                          */
9894                 case CEE_NEWARR: {
9895                         MonoInst *len_ins;
9896                         const char *data_ptr;
9897                         int data_size = 0;
9898                         guint32 field_token;
9899
9900                         CHECK_STACK (1);
9901                         --sp;
9902
9903                         CHECK_OPSIZE (5);
9904                         token = read32 (ip + 1);
9905
9906                         klass = mini_get_class (method, token, generic_context);
9907                         CHECK_TYPELOAD (klass);
9908
9909                         context_used = mini_class_check_context_used (cfg, klass);
9910
9911                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
9912                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_I4);
9913                                 ins->sreg1 = sp [0]->dreg;
9914                                 ins->type = STACK_I4;
9915                                 ins->dreg = alloc_ireg (cfg);
9916                                 MONO_ADD_INS (cfg->cbb, ins);
9917                                 *sp = mono_decompose_opcode (cfg, ins);
9918                         }
9919
9920                         if (context_used) {
9921                                 MonoInst *args [3];
9922                                 MonoClass *array_class = mono_array_class_get (klass, 1);
9923                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
9924
9925                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
9926
9927                                 /* vtable */
9928                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
9929                                         array_class, MONO_RGCTX_INFO_VTABLE);
9930                                 /* array len */
9931                                 args [1] = sp [0];
9932
9933                                 if (managed_alloc)
9934                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
9935                                 else
9936                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
9937                         } else {
9938                                 if (cfg->opt & MONO_OPT_SHARED) {
9939                                         /* Decompose now to avoid problems with references to the domainvar */
9940                                         MonoInst *iargs [3];
9941
9942                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9943                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
9944                                         iargs [2] = sp [0];
9945
9946                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
9947                                 } else {
9948                                         /* Decompose later since it is needed by abcrem */
9949                                         MonoClass *array_type = mono_array_class_get (klass, 1);
9950                                         mono_class_vtable (cfg->domain, array_type);
9951                                         CHECK_TYPELOAD (array_type);
9952
9953                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
9954                                         ins->dreg = alloc_ireg_ref (cfg);
9955                                         ins->sreg1 = sp [0]->dreg;
9956                                         ins->inst_newa_class = klass;
9957                                         ins->type = STACK_OBJ;
9958                                         ins->klass = array_type;
9959                                         MONO_ADD_INS (cfg->cbb, ins);
9960                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
9961                                         cfg->cbb->has_array_access = TRUE;
9962
9963                                         /* Needed so mono_emit_load_get_addr () gets called */
9964                                         mono_get_got_var (cfg);
9965                                 }
9966                         }
9967
9968                         len_ins = sp [0];
9969                         ip += 5;
9970                         *sp++ = ins;
9971                         inline_costs += 1;
9972
9973                         /*
9974                          * we inline/optimize the initialization sequence if possible.
9975                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
9976                          * for small sizes open code the memcpy
9977                          * ensure the rva field is big enough
9978                          */
9979                         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))) {
9980                                 MonoMethod *memcpy_method = get_memcpy_method ();
9981                                 MonoInst *iargs [3];
9982                                 int add_reg = alloc_ireg_mp (cfg);
9983
9984                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, G_STRUCT_OFFSET (MonoArray, vector));
9985                                 if (cfg->compile_aot) {
9986                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
9987                                 } else {
9988                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
9989                                 }
9990                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
9991                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
9992                                 ip += 11;
9993                         }
9994
9995                         break;
9996                 }
9997                 case CEE_LDLEN:
9998                         CHECK_STACK (1);
9999                         --sp;
10000                         if (sp [0]->type != STACK_OBJ)
10001                                 UNVERIFIED;
10002
10003                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10004                         ins->dreg = alloc_preg (cfg);
10005                         ins->sreg1 = sp [0]->dreg;
10006                         ins->type = STACK_I4;
10007                         /* This flag will be inherited by the decomposition */
10008                         ins->flags |= MONO_INST_FAULT;
10009                         MONO_ADD_INS (cfg->cbb, ins);
10010                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10011                         cfg->cbb->has_array_access = TRUE;
10012                         ip ++;
10013                         *sp++ = ins;
10014                         break;
10015                 case CEE_LDELEMA:
10016                         CHECK_STACK (2);
10017                         sp -= 2;
10018                         CHECK_OPSIZE (5);
10019                         if (sp [0]->type != STACK_OBJ)
10020                                 UNVERIFIED;
10021
10022                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10023
10024                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10025                         CHECK_TYPELOAD (klass);
10026                         /* we need to make sure that this array is exactly the type it needs
10027                          * to be for correctness. the wrappers are lax with their usage
10028                          * so we need to ignore them here
10029                          */
10030                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10031                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10032                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10033                                 CHECK_TYPELOAD (array_class);
10034                         }
10035
10036                         readonly = FALSE;
10037                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10038                         *sp++ = ins;
10039                         ip += 5;
10040                         break;
10041                 case CEE_LDELEM:
10042                 case CEE_LDELEM_I1:
10043                 case CEE_LDELEM_U1:
10044                 case CEE_LDELEM_I2:
10045                 case CEE_LDELEM_U2:
10046                 case CEE_LDELEM_I4:
10047                 case CEE_LDELEM_U4:
10048                 case CEE_LDELEM_I8:
10049                 case CEE_LDELEM_I:
10050                 case CEE_LDELEM_R4:
10051                 case CEE_LDELEM_R8:
10052                 case CEE_LDELEM_REF: {
10053                         MonoInst *addr;
10054
10055                         CHECK_STACK (2);
10056                         sp -= 2;
10057
10058                         if (*ip == CEE_LDELEM) {
10059                                 CHECK_OPSIZE (5);
10060                                 token = read32 (ip + 1);
10061                                 klass = mini_get_class (method, token, generic_context);
10062                                 CHECK_TYPELOAD (klass);
10063                                 mono_class_init (klass);
10064                         }
10065                         else
10066                                 klass = array_access_to_klass (*ip);
10067
10068                         if (sp [0]->type != STACK_OBJ)
10069                                 UNVERIFIED;
10070
10071                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10072
10073                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10074                                 // FIXME-VT: OP_ICONST optimization
10075                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10076                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10077                                 ins->opcode = OP_LOADV_MEMBASE;
10078                         } else if (sp [1]->opcode == OP_ICONST) {
10079                                 int array_reg = sp [0]->dreg;
10080                                 int index_reg = sp [1]->dreg;
10081                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
10082
10083                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
10084                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
10085                         } else {
10086                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10087                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10088                         }
10089                         *sp++ = ins;
10090                         if (*ip == CEE_LDELEM)
10091                                 ip += 5;
10092                         else
10093                                 ++ip;
10094                         break;
10095                 }
10096                 case CEE_STELEM_I:
10097                 case CEE_STELEM_I1:
10098                 case CEE_STELEM_I2:
10099                 case CEE_STELEM_I4:
10100                 case CEE_STELEM_I8:
10101                 case CEE_STELEM_R4:
10102                 case CEE_STELEM_R8:
10103                 case CEE_STELEM_REF:
10104                 case CEE_STELEM: {
10105                         CHECK_STACK (3);
10106                         sp -= 3;
10107
10108                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10109
10110                         if (*ip == CEE_STELEM) {
10111                                 CHECK_OPSIZE (5);
10112                                 token = read32 (ip + 1);
10113                                 klass = mini_get_class (method, token, generic_context);
10114                                 CHECK_TYPELOAD (klass);
10115                                 mono_class_init (klass);
10116                         }
10117                         else
10118                                 klass = array_access_to_klass (*ip);
10119
10120                         if (sp [0]->type != STACK_OBJ)
10121                                 UNVERIFIED;
10122
10123                         emit_array_store (cfg, klass, sp, TRUE);
10124
10125                         if (*ip == CEE_STELEM)
10126                                 ip += 5;
10127                         else
10128                                 ++ip;
10129                         inline_costs += 1;
10130                         break;
10131                 }
10132                 case CEE_CKFINITE: {
10133                         CHECK_STACK (1);
10134                         --sp;
10135
10136                         MONO_INST_NEW (cfg, ins, OP_CKFINITE);
10137                         ins->sreg1 = sp [0]->dreg;
10138                         ins->dreg = alloc_freg (cfg);
10139                         ins->type = STACK_R8;
10140                         MONO_ADD_INS (bblock, ins);
10141
10142                         *sp++ = mono_decompose_opcode (cfg, ins);
10143
10144                         ++ip;
10145                         break;
10146                 }
10147                 case CEE_REFANYVAL: {
10148                         MonoInst *src_var, *src;
10149
10150                         int klass_reg = alloc_preg (cfg);
10151                         int dreg = alloc_preg (cfg);
10152
10153                         GSHAREDVT_FAILURE (*ip);
10154
10155                         CHECK_STACK (1);
10156                         MONO_INST_NEW (cfg, ins, *ip);
10157                         --sp;
10158                         CHECK_OPSIZE (5);
10159                         klass = mono_class_get_full (image, read32 (ip + 1), generic_context);
10160                         CHECK_TYPELOAD (klass);
10161                         mono_class_init (klass);
10162
10163                         context_used = mini_class_check_context_used (cfg, klass);
10164
10165                         // FIXME:
10166                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
10167                         if (!src_var)
10168                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
10169                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
10170                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass));
10171
10172                         if (context_used) {
10173                                 MonoInst *klass_ins;
10174
10175                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
10176                                                 klass, MONO_RGCTX_INFO_KLASS);
10177
10178                                 // FIXME:
10179                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
10180                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
10181                         } else {
10182                                 mini_emit_class_check (cfg, klass_reg, klass);
10183                         }
10184                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, value));
10185                         ins->type = STACK_MP;
10186                         *sp++ = ins;
10187                         ip += 5;
10188                         break;
10189                 }
10190                 case CEE_MKREFANY: {
10191                         MonoInst *loc, *addr;
10192
10193                         GSHAREDVT_FAILURE (*ip);
10194
10195                         CHECK_STACK (1);
10196                         MONO_INST_NEW (cfg, ins, *ip);
10197                         --sp;
10198                         CHECK_OPSIZE (5);
10199                         klass = mono_class_get_full (image, read32 (ip + 1), generic_context);
10200                         CHECK_TYPELOAD (klass);
10201                         mono_class_init (klass);
10202
10203                         context_used = mini_class_check_context_used (cfg, klass);
10204
10205                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
10206                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
10207
10208                         if (context_used) {
10209                                 MonoInst *const_ins;
10210                                 int type_reg = alloc_preg (cfg);
10211
10212                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
10213                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
10214                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, G_STRUCT_OFFSET (MonoClass, byval_arg));
10215                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
10216                         } else if (cfg->compile_aot) {
10217                                 int const_reg = alloc_preg (cfg);
10218                                 int type_reg = alloc_preg (cfg);
10219
10220                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
10221                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
10222                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, G_STRUCT_OFFSET (MonoClass, byval_arg));
10223                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
10224                         } else {
10225                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
10226                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), klass);
10227                         }
10228                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
10229
10230                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
10231                         ins->type = STACK_VTYPE;
10232                         ins->klass = mono_defaults.typed_reference_class;
10233                         *sp++ = ins;
10234                         ip += 5;
10235                         break;
10236                 }
10237                 case CEE_LDTOKEN: {
10238                         gpointer handle;
10239                         MonoClass *handle_class;
10240
10241                         CHECK_STACK_OVF (1);
10242
10243                         CHECK_OPSIZE (5);
10244                         n = read32 (ip + 1);
10245
10246                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
10247                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
10248                                 handle = mono_method_get_wrapper_data (method, n);
10249                                 handle_class = mono_method_get_wrapper_data (method, n + 1);
10250                                 if (handle_class == mono_defaults.typehandle_class)
10251                                         handle = &((MonoClass*)handle)->byval_arg;
10252                         }
10253                         else {
10254                                 handle = mono_ldtoken (image, n, &handle_class, generic_context);
10255                         }
10256                         if (!handle)
10257                                 LOAD_ERROR;
10258                         mono_class_init (handle_class);
10259                         if (cfg->generic_sharing_context) {
10260                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
10261                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
10262                                         /* This case handles ldtoken
10263                                            of an open type, like for
10264                                            typeof(Gen<>). */
10265                                         context_used = 0;
10266                                 } else if (handle_class == mono_defaults.typehandle_class) {
10267                                         /* If we get a MONO_TYPE_CLASS
10268                                            then we need to provide the
10269                                            open type, not an
10270                                            instantiation of it. */
10271                                         if (mono_type_get_type (handle) == MONO_TYPE_CLASS)
10272                                                 context_used = 0;
10273                                         else
10274                                                 context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type (handle));
10275                                 } else if (handle_class == mono_defaults.fieldhandle_class)
10276                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
10277                                 else if (handle_class == mono_defaults.methodhandle_class)
10278                                         context_used = mini_method_check_context_used (cfg, handle);
10279                                 else
10280                                         g_assert_not_reached ();
10281                         }
10282
10283                         if ((cfg->opt & MONO_OPT_SHARED) &&
10284                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
10285                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
10286                                 MonoInst *addr, *vtvar, *iargs [3];
10287                                 int method_context_used;
10288
10289                                 method_context_used = mini_method_check_context_used (cfg, method);
10290
10291                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
10292
10293                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10294                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
10295                                 if (method_context_used) {
10296                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
10297                                                 method, MONO_RGCTX_INFO_METHOD);
10298                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
10299                                 } else {
10300                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
10301                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
10302                                 }
10303                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
10304
10305                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
10306
10307                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
10308                         } else {
10309                                 if ((ip + 5 < end) && ip_in_bb (cfg, bblock, ip + 5) &&
10310                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
10311                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
10312                                         (cmethod->klass == mono_defaults.monotype_class->parent) &&
10313                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
10314                                         MonoClass *tclass = mono_class_from_mono_type (handle);
10315
10316                                         mono_class_init (tclass);
10317                                         if (context_used) {
10318                                                 ins = emit_get_rgctx_klass (cfg, context_used,
10319                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
10320                                         } else if (cfg->compile_aot) {
10321                                                 if (method->wrapper_type) {
10322                                                         if (mono_class_get (tclass->image, tclass->type_token) == tclass && !generic_context) {
10323                                                                 /* Special case for static synchronized wrappers */
10324                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
10325                                                         } else {
10326                                                                 /* FIXME: n is not a normal token */
10327                                                                 cfg->disable_aot = TRUE;
10328                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
10329                                                         }
10330                                                 } else {
10331                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
10332                                                 }
10333                                         } else {
10334                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, handle));
10335                                         }
10336                                         ins->type = STACK_OBJ;
10337                                         ins->klass = cmethod->klass;
10338                                         ip += 5;
10339                                 } else {
10340                                         MonoInst *addr, *vtvar;
10341
10342                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
10343
10344                                         if (context_used) {
10345                                                 if (handle_class == mono_defaults.typehandle_class) {
10346                                                         ins = emit_get_rgctx_klass (cfg, context_used,
10347                                                                         mono_class_from_mono_type (handle),
10348                                                                         MONO_RGCTX_INFO_TYPE);
10349                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
10350                                                         ins = emit_get_rgctx_method (cfg, context_used,
10351                                                                         handle, MONO_RGCTX_INFO_METHOD);
10352                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
10353                                                         ins = emit_get_rgctx_field (cfg, context_used,
10354                                                                         handle, MONO_RGCTX_INFO_CLASS_FIELD);
10355                                                 } else {
10356                                                         g_assert_not_reached ();
10357                                                 }
10358                                         } else if (cfg->compile_aot) {
10359                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n);
10360                                         } else {
10361                                                 EMIT_NEW_PCONST (cfg, ins, handle);
10362                                         }
10363                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
10364                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
10365                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
10366                                 }
10367                         }
10368
10369                         *sp++ = ins;
10370                         ip += 5;
10371                         break;
10372                 }
10373                 case CEE_THROW:
10374                         CHECK_STACK (1);
10375                         MONO_INST_NEW (cfg, ins, OP_THROW);
10376                         --sp;
10377                         ins->sreg1 = sp [0]->dreg;
10378                         ip++;
10379                         bblock->out_of_line = TRUE;
10380                         MONO_ADD_INS (bblock, ins);
10381                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
10382                         MONO_ADD_INS (bblock, ins);
10383                         sp = stack_start;
10384
10385                         link_bblock (cfg, bblock, end_bblock);
10386                         start_new_bblock = 1;
10387                         break;
10388                 case CEE_ENDFINALLY:
10389                         /* mono_save_seq_point_info () depends on this */
10390                         if (sp != stack_start)
10391                                 emit_seq_point (cfg, method, ip, FALSE);
10392                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
10393                         MONO_ADD_INS (bblock, ins);
10394                         ip++;
10395                         start_new_bblock = 1;
10396
10397                         /*
10398                          * Control will leave the method so empty the stack, otherwise
10399                          * the next basic block will start with a nonempty stack.
10400                          */
10401                         while (sp != stack_start) {
10402                                 sp--;
10403                         }
10404                         break;
10405                 case CEE_LEAVE:
10406                 case CEE_LEAVE_S: {
10407                         GList *handlers;
10408
10409                         if (*ip == CEE_LEAVE) {
10410                                 CHECK_OPSIZE (5);
10411                                 target = ip + 5 + (gint32)read32(ip + 1);
10412                         } else {
10413                                 CHECK_OPSIZE (2);
10414                                 target = ip + 2 + (signed char)(ip [1]);
10415                         }
10416
10417                         /* empty the stack */
10418                         while (sp != stack_start) {
10419                                 sp--;
10420                         }
10421
10422                         /*
10423                          * If this leave statement is in a catch block, check for a
10424                          * pending exception, and rethrow it if necessary.
10425                          * We avoid doing this in runtime invoke wrappers, since those are called
10426                          * by native code which excepts the wrapper to catch all exceptions.
10427                          */
10428                         for (i = 0; i < header->num_clauses; ++i) {
10429                                 MonoExceptionClause *clause = &header->clauses [i];
10430
10431                                 /*
10432                                  * Use <= in the final comparison to handle clauses with multiple
10433                                  * leave statements, like in bug #78024.
10434                                  * The ordering of the exception clauses guarantees that we find the
10435                                  * innermost clause.
10436                                  */
10437                                 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) {
10438                                         MonoInst *exc_ins;
10439                                         MonoBasicBlock *dont_throw;
10440
10441                                         /*
10442                                           MonoInst *load;
10443
10444                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
10445                                         */
10446
10447                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
10448
10449                                         NEW_BBLOCK (cfg, dont_throw);
10450
10451                                         /*
10452                                          * Currently, we always rethrow the abort exception, despite the
10453                                          * fact that this is not correct. See thread6.cs for an example.
10454                                          * But propagating the abort exception is more important than
10455                                          * getting the sematics right.
10456                                          */
10457                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
10458                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
10459                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
10460
10461                                         MONO_START_BB (cfg, dont_throw);
10462                                         bblock = cfg->cbb;
10463                                 }
10464                         }
10465
10466                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
10467                                 GList *tmp;
10468                                 MonoExceptionClause *clause;
10469
10470                                 for (tmp = handlers; tmp; tmp = tmp->next) {
10471                                         clause = tmp->data;
10472                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
10473                                         g_assert (tblock);
10474                                         link_bblock (cfg, bblock, tblock);
10475                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
10476                                         ins->inst_target_bb = tblock;
10477                                         ins->inst_eh_block = clause;
10478                                         MONO_ADD_INS (bblock, ins);
10479                                         bblock->has_call_handler = 1;
10480                                         if (COMPILE_LLVM (cfg)) {
10481                                                 MonoBasicBlock *target_bb;
10482
10483                                                 /*
10484                                                  * Link the finally bblock with the target, since it will
10485                                                  * conceptually branch there.
10486                                                  * FIXME: Have to link the bblock containing the endfinally.
10487                                                  */
10488                                                 GET_BBLOCK (cfg, target_bb, target);
10489                                                 link_bblock (cfg, tblock, target_bb);
10490                                         }
10491                                 }
10492                                 g_list_free (handlers);
10493                         }
10494
10495                         MONO_INST_NEW (cfg, ins, OP_BR);
10496                         MONO_ADD_INS (bblock, ins);
10497                         GET_BBLOCK (cfg, tblock, target);
10498                         link_bblock (cfg, bblock, tblock);
10499                         ins->inst_target_bb = tblock;
10500                         start_new_bblock = 1;
10501
10502                         if (*ip == CEE_LEAVE)
10503                                 ip += 5;
10504                         else
10505                                 ip += 2;
10506
10507                         break;
10508                 }
10509
10510                         /*
10511                          * Mono specific opcodes
10512                          */
10513                 case MONO_CUSTOM_PREFIX: {
10514
10515                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
10516
10517                         CHECK_OPSIZE (2);
10518                         switch (ip [1]) {
10519                         case CEE_MONO_ICALL: {
10520                                 gpointer func;
10521                                 MonoJitICallInfo *info;
10522
10523                                 token = read32 (ip + 2);
10524                                 func = mono_method_get_wrapper_data (method, token);
10525                                 info = mono_find_jit_icall_by_addr (func);
10526                                 if (!info)
10527                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
10528                                 g_assert (info);
10529
10530                                 CHECK_STACK (info->sig->param_count);
10531                                 sp -= info->sig->param_count;
10532
10533                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
10534                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
10535                                         *sp++ = ins;
10536
10537                                 ip += 6;
10538                                 inline_costs += 10 * num_calls++;
10539
10540                                 break;
10541                         }
10542                         case CEE_MONO_LDPTR: {
10543                                 gpointer ptr;
10544
10545                                 CHECK_STACK_OVF (1);
10546                                 CHECK_OPSIZE (6);
10547                                 token = read32 (ip + 2);
10548
10549                                 ptr = mono_method_get_wrapper_data (method, token);
10550                                 /* FIXME: Generalize this */
10551                                 if (cfg->compile_aot && ptr == mono_thread_interruption_request_flag ()) {
10552                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
10553                                         *sp++ = ins;
10554                                         ip += 6;
10555                                         break;
10556                                 }
10557                                 EMIT_NEW_PCONST (cfg, ins, ptr);
10558                                 *sp++ = ins;
10559                                 ip += 6;
10560                                 inline_costs += 10 * num_calls++;
10561                                 /* Can't embed random pointers into AOT code */
10562                                 cfg->disable_aot = 1;
10563                                 break;
10564                         }
10565                         case CEE_MONO_JIT_ICALL_ADDR: {
10566                                 MonoJitICallInfo *callinfo;
10567                                 gpointer ptr;
10568
10569                                 CHECK_STACK_OVF (1);
10570                                 CHECK_OPSIZE (6);
10571                                 token = read32 (ip + 2);
10572
10573                                 ptr = mono_method_get_wrapper_data (method, token);
10574                                 callinfo = mono_find_jit_icall_by_addr (ptr);
10575                                 g_assert (callinfo);
10576                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
10577                                 *sp++ = ins;
10578                                 ip += 6;
10579                                 inline_costs += 10 * num_calls++;
10580                                 break;
10581                         }
10582                         case CEE_MONO_ICALL_ADDR: {
10583                                 MonoMethod *cmethod;
10584                                 gpointer ptr;
10585
10586                                 CHECK_STACK_OVF (1);
10587                                 CHECK_OPSIZE (6);
10588                                 token = read32 (ip + 2);
10589
10590                                 cmethod = mono_method_get_wrapper_data (method, token);
10591
10592                                 if (cfg->compile_aot) {
10593                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
10594                                 } else {
10595                                         ptr = mono_lookup_internal_call (cmethod);
10596                                         g_assert (ptr);
10597                                         EMIT_NEW_PCONST (cfg, ins, ptr);
10598                                 }
10599                                 *sp++ = ins;
10600                                 ip += 6;
10601                                 break;
10602                         }
10603                         case CEE_MONO_VTADDR: {
10604                                 MonoInst *src_var, *src;
10605
10606                                 CHECK_STACK (1);
10607                                 --sp;
10608
10609                                 // FIXME:
10610                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
10611                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
10612                                 *sp++ = src;
10613                                 ip += 2;
10614                                 break;
10615                         }
10616                         case CEE_MONO_NEWOBJ: {
10617                                 MonoInst *iargs [2];
10618
10619                                 CHECK_STACK_OVF (1);
10620                                 CHECK_OPSIZE (6);
10621                                 token = read32 (ip + 2);
10622                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10623                                 mono_class_init (klass);
10624                                 NEW_DOMAINCONST (cfg, iargs [0]);
10625                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
10626                                 NEW_CLASSCONST (cfg, iargs [1], klass);
10627                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
10628                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
10629                                 ip += 6;
10630                                 inline_costs += 10 * num_calls++;
10631                                 break;
10632                         }
10633                         case CEE_MONO_OBJADDR:
10634                                 CHECK_STACK (1);
10635                                 --sp;
10636                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
10637                                 ins->dreg = alloc_ireg_mp (cfg);
10638                                 ins->sreg1 = sp [0]->dreg;
10639                                 ins->type = STACK_MP;
10640                                 MONO_ADD_INS (cfg->cbb, ins);
10641                                 *sp++ = ins;
10642                                 ip += 2;
10643                                 break;
10644                         case CEE_MONO_LDNATIVEOBJ:
10645                                 /*
10646                                  * Similar to LDOBJ, but instead load the unmanaged
10647                                  * representation of the vtype to the stack.
10648                                  */
10649                                 CHECK_STACK (1);
10650                                 CHECK_OPSIZE (6);
10651                                 --sp;
10652                                 token = read32 (ip + 2);
10653                                 klass = mono_method_get_wrapper_data (method, token);
10654                                 g_assert (klass->valuetype);
10655                                 mono_class_init (klass);
10656
10657                                 {
10658                                         MonoInst *src, *dest, *temp;
10659
10660                                         src = sp [0];
10661                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
10662                                         temp->backend.is_pinvoke = 1;
10663                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
10664                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
10665
10666                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
10667                                         dest->type = STACK_VTYPE;
10668                                         dest->klass = klass;
10669
10670                                         *sp ++ = dest;
10671                                         ip += 6;
10672                                 }
10673                                 break;
10674                         case CEE_MONO_RETOBJ: {
10675                                 /*
10676                                  * Same as RET, but return the native representation of a vtype
10677                                  * to the caller.
10678                                  */
10679                                 g_assert (cfg->ret);
10680                                 g_assert (mono_method_signature (method)->pinvoke);
10681                                 CHECK_STACK (1);
10682                                 --sp;
10683
10684                                 CHECK_OPSIZE (6);
10685                                 token = read32 (ip + 2);
10686                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10687
10688                                 if (!cfg->vret_addr) {
10689                                         g_assert (cfg->ret_var_is_local);
10690
10691                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
10692                                 } else {
10693                                         EMIT_NEW_RETLOADA (cfg, ins);
10694                                 }
10695                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
10696
10697                                 if (sp != stack_start)
10698                                         UNVERIFIED;
10699
10700                                 MONO_INST_NEW (cfg, ins, OP_BR);
10701                                 ins->inst_target_bb = end_bblock;
10702                                 MONO_ADD_INS (bblock, ins);
10703                                 link_bblock (cfg, bblock, end_bblock);
10704                                 start_new_bblock = 1;
10705                                 ip += 6;
10706                                 break;
10707                         }
10708                         case CEE_MONO_CISINST:
10709                         case CEE_MONO_CCASTCLASS: {
10710                                 int token;
10711                                 CHECK_STACK (1);
10712                                 --sp;
10713                                 CHECK_OPSIZE (6);
10714                                 token = read32 (ip + 2);
10715                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10716                                 if (ip [1] == CEE_MONO_CISINST)
10717                                         ins = handle_cisinst (cfg, klass, sp [0]);
10718                                 else
10719                                         ins = handle_ccastclass (cfg, klass, sp [0]);
10720                                 bblock = cfg->cbb;
10721                                 *sp++ = ins;
10722                                 ip += 6;
10723                                 break;
10724                         }
10725                         case CEE_MONO_SAVE_LMF:
10726                         case CEE_MONO_RESTORE_LMF:
10727 #ifdef MONO_ARCH_HAVE_LMF_OPS
10728                                 MONO_INST_NEW (cfg, ins, (ip [1] == CEE_MONO_SAVE_LMF) ? OP_SAVE_LMF : OP_RESTORE_LMF);
10729                                 MONO_ADD_INS (bblock, ins);
10730                                 cfg->need_lmf_area = TRUE;
10731 #endif
10732                                 ip += 2;
10733                                 break;
10734                         case CEE_MONO_CLASSCONST:
10735                                 CHECK_STACK_OVF (1);
10736                                 CHECK_OPSIZE (6);
10737                                 token = read32 (ip + 2);
10738                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
10739                                 *sp++ = ins;
10740                                 ip += 6;
10741                                 inline_costs += 10 * num_calls++;
10742                                 break;
10743                         case CEE_MONO_NOT_TAKEN:
10744                                 bblock->out_of_line = TRUE;
10745                                 ip += 2;
10746                                 break;
10747                         case CEE_MONO_TLS:
10748                                 CHECK_STACK_OVF (1);
10749                                 CHECK_OPSIZE (6);
10750                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
10751                                 ins->dreg = alloc_preg (cfg);
10752                                 ins->inst_offset = (gint32)read32 (ip + 2);
10753                                 ins->type = STACK_PTR;
10754                                 MONO_ADD_INS (bblock, ins);
10755                                 *sp++ = ins;
10756                                 ip += 6;
10757                                 break;
10758                         case CEE_MONO_DYN_CALL: {
10759                                 MonoCallInst *call;
10760
10761                                 /* It would be easier to call a trampoline, but that would put an
10762                                  * extra frame on the stack, confusing exception handling. So
10763                                  * implement it inline using an opcode for now.
10764                                  */
10765
10766                                 if (!cfg->dyn_call_var) {
10767                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
10768                                         /* prevent it from being register allocated */
10769                                         cfg->dyn_call_var->flags |= MONO_INST_INDIRECT;
10770                                 }
10771
10772                                 /* Has to use a call inst since it local regalloc expects it */
10773                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
10774                                 ins = (MonoInst*)call;
10775                                 sp -= 2;
10776                                 ins->sreg1 = sp [0]->dreg;
10777                                 ins->sreg2 = sp [1]->dreg;
10778                                 MONO_ADD_INS (bblock, ins);
10779
10780 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
10781                                 cfg->param_area = MAX (cfg->param_area, MONO_ARCH_DYN_CALL_PARAM_AREA);
10782 #endif
10783
10784                                 ip += 2;
10785                                 inline_costs += 10 * num_calls++;
10786
10787                                 break;
10788                         }
10789                         case CEE_MONO_MEMORY_BARRIER: {
10790                                 CHECK_OPSIZE (5);
10791                                 emit_memory_barrier (cfg, (int)read32 (ip + 1));
10792                                 ip += 5;
10793                                 break;
10794                         }
10795                         case CEE_MONO_JIT_ATTACH: {
10796                                 MonoInst *args [16];
10797                                 MonoInst *ad_ins, *lmf_ins;
10798                                 MonoBasicBlock *next_bb = NULL;
10799
10800                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
10801
10802                                 EMIT_NEW_PCONST (cfg, ins, NULL);
10803                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
10804
10805 #if TARGET_WIN32
10806                                 ad_ins = NULL;
10807                                 lmf_ins = NULL;
10808 #else
10809                                 ad_ins = mono_get_domain_intrinsic (cfg);
10810                                 lmf_ins = mono_get_lmf_intrinsic (cfg);
10811 #endif
10812
10813 #ifdef MONO_ARCH_HAVE_TLS_GET
10814                                 if (MONO_ARCH_HAVE_TLS_GET && ad_ins && lmf_ins) {
10815                                         NEW_BBLOCK (cfg, next_bb);
10816
10817                                         MONO_ADD_INS (cfg->cbb, ad_ins);
10818                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ad_ins->dreg, 0);
10819                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, next_bb);
10820
10821                                         MONO_ADD_INS (cfg->cbb, lmf_ins);
10822                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, lmf_ins->dreg, 0);
10823                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, next_bb);
10824                                 }
10825 #endif
10826
10827                                 if (cfg->compile_aot) {
10828                                         /* AOT code is only used in the root domain */
10829                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
10830                                 } else {
10831                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
10832                                 }
10833                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
10834                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
10835
10836                                 if (next_bb) {
10837                                         MONO_START_BB (cfg, next_bb);
10838                                         bblock = cfg->cbb;
10839                                 }
10840                                 ip += 2;
10841                                 break;
10842                         }
10843                         case CEE_MONO_JIT_DETACH: {
10844                                 MonoInst *args [16];
10845
10846                                 /* Restore the original domain */
10847                                 dreg = alloc_ireg (cfg);
10848                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
10849                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
10850                                 ip += 2;
10851                                 break;
10852                         }
10853                         default:
10854                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
10855                                 break;
10856                         }
10857                         break;
10858                 }
10859
10860                 case CEE_PREFIX1: {
10861                         CHECK_OPSIZE (2);
10862                         switch (ip [1]) {
10863                         case CEE_ARGLIST: {
10864                                 /* somewhat similar to LDTOKEN */
10865                                 MonoInst *addr, *vtvar;
10866                                 CHECK_STACK_OVF (1);
10867                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
10868
10869                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
10870                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
10871
10872                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
10873                                 ins->type = STACK_VTYPE;
10874                                 ins->klass = mono_defaults.argumenthandle_class;
10875                                 *sp++ = ins;
10876                                 ip += 2;
10877                                 break;
10878                         }
10879                         case CEE_CEQ:
10880                         case CEE_CGT:
10881                         case CEE_CGT_UN:
10882                         case CEE_CLT:
10883                         case CEE_CLT_UN: {
10884                                 MonoInst *cmp;
10885                                 CHECK_STACK (2);
10886                                 /*
10887                                  * The following transforms:
10888                                  *    CEE_CEQ    into OP_CEQ
10889                                  *    CEE_CGT    into OP_CGT
10890                                  *    CEE_CGT_UN into OP_CGT_UN
10891                                  *    CEE_CLT    into OP_CLT
10892                                  *    CEE_CLT_UN into OP_CLT_UN
10893                                  */
10894                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
10895
10896                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
10897                                 sp -= 2;
10898                                 cmp->sreg1 = sp [0]->dreg;
10899                                 cmp->sreg2 = sp [1]->dreg;
10900                                 type_from_op (cmp, sp [0], sp [1]);
10901                                 CHECK_TYPE (cmp);
10902                                 if ((sp [0]->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((sp [0]->type == STACK_PTR) || (sp [0]->type == STACK_OBJ) || (sp [0]->type == STACK_MP))))
10903                                         cmp->opcode = OP_LCOMPARE;
10904                                 else if (sp [0]->type == STACK_R8)
10905                                         cmp->opcode = OP_FCOMPARE;
10906                                 else
10907                                         cmp->opcode = OP_ICOMPARE;
10908                                 MONO_ADD_INS (bblock, cmp);
10909                                 ins->type = STACK_I4;
10910                                 ins->dreg = alloc_dreg (cfg, ins->type);
10911                                 type_from_op (ins, sp [0], sp [1]);
10912
10913                                 if (cmp->opcode == OP_FCOMPARE) {
10914                                         /*
10915                                          * The backends expect the fceq opcodes to do the
10916                                          * comparison too.
10917                                          */
10918                                         cmp->opcode = OP_NOP;
10919                                         ins->sreg1 = cmp->sreg1;
10920                                         ins->sreg2 = cmp->sreg2;
10921                                 }
10922                                 MONO_ADD_INS (bblock, ins);
10923                                 *sp++ = ins;
10924                                 ip += 2;
10925                                 break;
10926                         }
10927                         case CEE_LDFTN: {
10928                                 MonoInst *argconst;
10929                                 MonoMethod *cil_method;
10930
10931                                 CHECK_STACK_OVF (1);
10932                                 CHECK_OPSIZE (6);
10933                                 n = read32 (ip + 2);
10934                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
10935                                 if (!cmethod || mono_loader_get_last_error ())
10936                                         LOAD_ERROR;
10937                                 mono_class_init (cmethod->klass);
10938
10939                                 mono_save_token_info (cfg, image, n, cmethod);
10940
10941                                 context_used = mini_method_check_context_used (cfg, cmethod);
10942
10943                                 cil_method = cmethod;
10944                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
10945                                         METHOD_ACCESS_FAILURE;
10946
10947                                 if (mono_security_cas_enabled ()) {
10948                                         if (check_linkdemand (cfg, method, cmethod))
10949                                                 INLINE_FAILURE ("linkdemand");
10950                                         CHECK_CFG_EXCEPTION;
10951                                 } else if (mono_security_core_clr_enabled ()) {
10952                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
10953                                 }
10954
10955                                 /*
10956                                  * Optimize the common case of ldftn+delegate creation
10957                                  */
10958                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
10959                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
10960                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
10961                                                 MonoInst *target_ins;
10962                                                 MonoMethod *invoke;
10963                                                 int invoke_context_used;
10964
10965                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
10966                                                 if (!invoke || !mono_method_signature (invoke))
10967                                                         LOAD_ERROR;
10968
10969                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
10970
10971                                                 target_ins = sp [-1];
10972
10973                                                 if (mono_security_core_clr_enabled ())
10974                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
10975
10976                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
10977                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
10978                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
10979                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
10980                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
10981                                                         }
10982                                                 }
10983
10984 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE)
10985                                                 /* FIXME: SGEN support */
10986                                                 if (invoke_context_used == 0) {
10987                                                         ip += 6;
10988                                                         if (cfg->verbose_level > 3)
10989                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10990                                                         sp --;
10991                                                         *sp = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used);
10992                                                         CHECK_CFG_EXCEPTION;
10993                                                         ip += 5;
10994                                                         sp ++;
10995                                                         break;
10996                                                 }
10997 #endif
10998                                         }
10999                                 }
11000
11001                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
11002                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
11003                                 *sp++ = ins;
11004
11005                                 ip += 6;
11006                                 inline_costs += 10 * num_calls++;
11007                                 break;
11008                         }
11009                         case CEE_LDVIRTFTN: {
11010                                 MonoInst *args [2];
11011
11012                                 CHECK_STACK (1);
11013                                 CHECK_OPSIZE (6);
11014                                 n = read32 (ip + 2);
11015                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
11016                                 if (!cmethod || mono_loader_get_last_error ())
11017                                         LOAD_ERROR;
11018                                 mono_class_init (cmethod->klass);
11019
11020                                 context_used = mini_method_check_context_used (cfg, cmethod);
11021
11022                                 if (mono_security_cas_enabled ()) {
11023                                         if (check_linkdemand (cfg, method, cmethod))
11024                                                 INLINE_FAILURE ("linkdemand");
11025                                         CHECK_CFG_EXCEPTION;
11026                                 } else if (mono_security_core_clr_enabled ()) {
11027                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
11028                                 }
11029
11030                                 --sp;
11031                                 args [0] = *sp;
11032
11033                                 args [1] = emit_get_rgctx_method (cfg, context_used,
11034                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
11035
11036                                 if (context_used)
11037                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
11038                                 else
11039                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
11040
11041                                 ip += 6;
11042                                 inline_costs += 10 * num_calls++;
11043                                 break;
11044                         }
11045                         case CEE_LDARG:
11046                                 CHECK_STACK_OVF (1);
11047                                 CHECK_OPSIZE (4);
11048                                 n = read16 (ip + 2);
11049                                 CHECK_ARG (n);
11050                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
11051                                 *sp++ = ins;
11052                                 ip += 4;
11053                                 break;
11054                         case CEE_LDARGA:
11055                                 CHECK_STACK_OVF (1);
11056                                 CHECK_OPSIZE (4);
11057                                 n = read16 (ip + 2);
11058                                 CHECK_ARG (n);
11059                                 NEW_ARGLOADA (cfg, ins, n);
11060                                 MONO_ADD_INS (cfg->cbb, ins);
11061                                 *sp++ = ins;
11062                                 ip += 4;
11063                                 break;
11064                         case CEE_STARG:
11065                                 CHECK_STACK (1);
11066                                 --sp;
11067                                 CHECK_OPSIZE (4);
11068                                 n = read16 (ip + 2);
11069                                 CHECK_ARG (n);
11070                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
11071                                         UNVERIFIED;
11072                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
11073                                 ip += 4;
11074                                 break;
11075                         case CEE_LDLOC:
11076                                 CHECK_STACK_OVF (1);
11077                                 CHECK_OPSIZE (4);
11078                                 n = read16 (ip + 2);
11079                                 CHECK_LOCAL (n);
11080                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
11081                                 *sp++ = ins;
11082                                 ip += 4;
11083                                 break;
11084                         case CEE_LDLOCA: {
11085                                 unsigned char *tmp_ip;
11086                                 CHECK_STACK_OVF (1);
11087                                 CHECK_OPSIZE (4);
11088                                 n = read16 (ip + 2);
11089                                 CHECK_LOCAL (n);
11090
11091                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
11092                                         ip = tmp_ip;
11093                                         inline_costs += 1;
11094                                         break;
11095                                 }
11096
11097                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
11098                                 *sp++ = ins;
11099                                 ip += 4;
11100                                 break;
11101                         }
11102                         case CEE_STLOC:
11103                                 CHECK_STACK (1);
11104                                 --sp;
11105                                 CHECK_OPSIZE (4);
11106                                 n = read16 (ip + 2);
11107                                 CHECK_LOCAL (n);
11108                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
11109                                         UNVERIFIED;
11110                                 emit_stloc_ir (cfg, sp, header, n);
11111                                 ip += 4;
11112                                 inline_costs += 1;
11113                                 break;
11114                         case CEE_LOCALLOC:
11115                                 CHECK_STACK (1);
11116                                 --sp;
11117                                 if (sp != stack_start)
11118                                         UNVERIFIED;
11119                                 if (cfg->method != method)
11120                                         /*
11121                                          * Inlining this into a loop in a parent could lead to
11122                                          * stack overflows which is different behavior than the
11123                                          * non-inlined case, thus disable inlining in this case.
11124                                          */
11125                                         goto inline_failure;
11126
11127                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
11128                                 ins->dreg = alloc_preg (cfg);
11129                                 ins->sreg1 = sp [0]->dreg;
11130                                 ins->type = STACK_PTR;
11131                                 MONO_ADD_INS (cfg->cbb, ins);
11132
11133                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11134                                 if (init_locals)
11135                                         ins->flags |= MONO_INST_INIT;
11136
11137                                 *sp++ = ins;
11138                                 ip += 2;
11139                                 break;
11140                         case CEE_ENDFILTER: {
11141                                 MonoExceptionClause *clause, *nearest;
11142                                 int cc, nearest_num;
11143
11144                                 CHECK_STACK (1);
11145                                 --sp;
11146                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
11147                                         UNVERIFIED;
11148                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
11149                                 ins->sreg1 = (*sp)->dreg;
11150                                 MONO_ADD_INS (bblock, ins);
11151                                 start_new_bblock = 1;
11152                                 ip += 2;
11153
11154                                 nearest = NULL;
11155                                 nearest_num = 0;
11156                                 for (cc = 0; cc < header->num_clauses; ++cc) {
11157                                         clause = &header->clauses [cc];
11158                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
11159                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
11160                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset))) {
11161                                                 nearest = clause;
11162                                                 nearest_num = cc;
11163                                         }
11164                                 }
11165                                 g_assert (nearest);
11166                                 if ((ip - header->code) != nearest->handler_offset)
11167                                         UNVERIFIED;
11168
11169                                 break;
11170                         }
11171                         case CEE_UNALIGNED_:
11172                                 ins_flag |= MONO_INST_UNALIGNED;
11173                                 /* FIXME: record alignment? we can assume 1 for now */
11174                                 CHECK_OPSIZE (3);
11175                                 ip += 3;
11176                                 break;
11177                         case CEE_VOLATILE_:
11178                                 ins_flag |= MONO_INST_VOLATILE;
11179                                 ip += 2;
11180                                 break;
11181                         case CEE_TAIL_:
11182                                 ins_flag   |= MONO_INST_TAILCALL;
11183                                 cfg->flags |= MONO_CFG_HAS_TAIL;
11184                                 /* Can't inline tail calls at this time */
11185                                 inline_costs += 100000;
11186                                 ip += 2;
11187                                 break;
11188                         case CEE_INITOBJ:
11189                                 CHECK_STACK (1);
11190                                 --sp;
11191                                 CHECK_OPSIZE (6);
11192                                 token = read32 (ip + 2);
11193                                 klass = mini_get_class (method, token, generic_context);
11194                                 CHECK_TYPELOAD (klass);
11195                                 if (generic_class_is_reference_type (cfg, klass))
11196                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
11197                                 else
11198                                         mini_emit_initobj (cfg, *sp, NULL, klass);
11199                                 ip += 6;
11200                                 inline_costs += 1;
11201                                 break;
11202                         case CEE_CONSTRAINED_:
11203                                 CHECK_OPSIZE (6);
11204                                 token = read32 (ip + 2);
11205                                 constrained_call = mini_get_class (method, token, generic_context);
11206                                 CHECK_TYPELOAD (constrained_call);
11207                                 ip += 6;
11208                                 break;
11209                         case CEE_CPBLK:
11210                         case CEE_INITBLK: {
11211                                 MonoInst *iargs [3];
11212                                 CHECK_STACK (3);
11213                                 sp -= 3;
11214
11215                                 if ((ip [1] == CEE_CPBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
11216                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
11217                                 } else if ((ip [1] == CEE_INITBLK) && (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)) {
11218                                         /* emit_memset only works when val == 0 */
11219                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
11220                                 } else {
11221                                         iargs [0] = sp [0];
11222                                         iargs [1] = sp [1];
11223                                         iargs [2] = sp [2];
11224                                         if (ip [1] == CEE_CPBLK) {
11225                                                 MonoMethod *memcpy_method = get_memcpy_method ();
11226                                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11227                                         } else {
11228                                                 MonoMethod *memset_method = get_memset_method ();
11229                                                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
11230                                         }
11231                                 }
11232                                 ip += 2;
11233                                 inline_costs += 1;
11234                                 break;
11235                         }
11236                         case CEE_NO_:
11237                                 CHECK_OPSIZE (3);
11238                                 if (ip [2] & 0x1)
11239                                         ins_flag |= MONO_INST_NOTYPECHECK;
11240                                 if (ip [2] & 0x2)
11241                                         ins_flag |= MONO_INST_NORANGECHECK;
11242                                 /* we ignore the no-nullcheck for now since we
11243                                  * really do it explicitly only when doing callvirt->call
11244                                  */
11245                                 ip += 3;
11246                                 break;
11247                         case CEE_RETHROW: {
11248                                 MonoInst *load;
11249                                 int handler_offset = -1;
11250
11251                                 for (i = 0; i < header->num_clauses; ++i) {
11252                                         MonoExceptionClause *clause = &header->clauses [i];
11253                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
11254                                                 handler_offset = clause->handler_offset;
11255                                                 break;
11256                                         }
11257                                 }
11258
11259                                 bblock->flags |= BB_EXCEPTION_UNSAFE;
11260
11261                                 g_assert (handler_offset != -1);
11262
11263                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
11264                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
11265                                 ins->sreg1 = load->dreg;
11266                                 MONO_ADD_INS (bblock, ins);
11267
11268                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11269                                 MONO_ADD_INS (bblock, ins);
11270
11271                                 sp = stack_start;
11272                                 link_bblock (cfg, bblock, end_bblock);
11273                                 start_new_bblock = 1;
11274                                 ip += 2;
11275                                 break;
11276                         }
11277                         case CEE_SIZEOF: {
11278                                 guint32 val;
11279                                 int ialign;
11280
11281                                 GSHAREDVT_FAILURE (*ip);
11282
11283                                 CHECK_STACK_OVF (1);
11284                                 CHECK_OPSIZE (6);
11285                                 token = read32 (ip + 2);
11286                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !method->klass->image->dynamic && !generic_context) {
11287                                         MonoType *type = mono_type_create_from_typespec (image, token);
11288                                         val = mono_type_size (type, &ialign);
11289                                 } else {
11290                                         MonoClass *klass = mono_class_get_full (image, token, generic_context);
11291                                         CHECK_TYPELOAD (klass);
11292                                         mono_class_init (klass);
11293                                         val = mono_type_size (&klass->byval_arg, &ialign);
11294                                 }
11295                                 EMIT_NEW_ICONST (cfg, ins, val);
11296                                 *sp++= ins;
11297                                 ip += 6;
11298                                 break;
11299                         }
11300                         case CEE_REFANYTYPE: {
11301                                 MonoInst *src_var, *src;
11302
11303                                 GSHAREDVT_FAILURE (*ip);
11304
11305                                 CHECK_STACK (1);
11306                                 --sp;
11307
11308                                 // FIXME:
11309                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11310                                 if (!src_var)
11311                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11312                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11313                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, type));
11314                                 *sp++ = ins;
11315                                 ip += 2;
11316                                 break;
11317                         }
11318                         case CEE_READONLY_:
11319                                 readonly = TRUE;
11320                                 ip += 2;
11321                                 break;
11322
11323                         case CEE_UNUSED56:
11324                         case CEE_UNUSED57:
11325                         case CEE_UNUSED70:
11326                         case CEE_UNUSED:
11327                         case CEE_UNUSED99:
11328                                 UNVERIFIED;
11329
11330                         default:
11331                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
11332                                 UNVERIFIED;
11333                         }
11334                         break;
11335                 }
11336                 case CEE_UNUSED58:
11337                 case CEE_UNUSED1:
11338                         UNVERIFIED;
11339
11340                 default:
11341                         g_warning ("opcode 0x%02x not handled", *ip);
11342                         UNVERIFIED;
11343                 }
11344         }
11345         if (start_new_bblock != 1)
11346                 UNVERIFIED;
11347
11348         bblock->cil_length = ip - bblock->cil_code;
11349         if (bblock->next_bb) {
11350                 /* This could already be set because of inlining, #693905 */
11351                 MonoBasicBlock *bb = bblock;
11352
11353                 while (bb->next_bb)
11354                         bb = bb->next_bb;
11355                 bb->next_bb = end_bblock;
11356         } else {
11357                 bblock->next_bb = end_bblock;
11358         }
11359
11360         if (cfg->method == method && cfg->domainvar) {
11361                 MonoInst *store;
11362                 MonoInst *get_domain;
11363
11364                 cfg->cbb = init_localsbb;
11365
11366                 if (! (get_domain = mono_arch_get_domain_intrinsic (cfg))) {
11367                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
11368                 }
11369                 else {
11370                         get_domain->dreg = alloc_preg (cfg);
11371                         MONO_ADD_INS (cfg->cbb, get_domain);
11372                 }
11373                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
11374                 MONO_ADD_INS (cfg->cbb, store);
11375         }
11376
11377 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
11378         if (cfg->compile_aot)
11379                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
11380                 mono_get_got_var (cfg);
11381 #endif
11382
11383         if (cfg->method == method && cfg->got_var)
11384                 mono_emit_load_got_addr (cfg);
11385
11386         if (init_locals) {
11387                 MonoInst *store;
11388
11389                 cfg->cbb = init_localsbb;
11390                 cfg->ip = NULL;
11391                 for (i = 0; i < header->num_locals; ++i) {
11392                         MonoType *ptype = header->locals [i];
11393                         int t = ptype->type;
11394                         dreg = cfg->locals [i]->dreg;
11395
11396                         if (t == MONO_TYPE_VALUETYPE && ptype->data.klass->enumtype)
11397                                 t = mono_class_enum_basetype (ptype->data.klass)->type;
11398                         if (ptype->byref) {
11399                                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
11400                         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
11401                                 MONO_EMIT_NEW_ICONST (cfg, cfg->locals [i]->dreg, 0);
11402                         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
11403                                 MONO_EMIT_NEW_I8CONST (cfg, cfg->locals [i]->dreg, 0);
11404                         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
11405                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
11406                                 ins->type = STACK_R8;
11407                                 ins->inst_p0 = (void*)&r8_0;
11408                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
11409                                 MONO_ADD_INS (init_localsbb, ins);
11410                                 EMIT_NEW_LOCSTORE (cfg, store, i, ins);
11411                         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
11412                                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (ptype))) {
11413                                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (ptype));
11414                         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, ptype)) {
11415                                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (ptype));
11416                         } else {
11417                                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
11418                         }
11419                 }
11420         }
11421
11422         if (cfg->init_ref_vars && cfg->method == method) {
11423                 /* Emit initialization for ref vars */
11424                 // FIXME: Avoid duplication initialization for IL locals.
11425                 for (i = 0; i < cfg->num_varinfo; ++i) {
11426                         MonoInst *ins = cfg->varinfo [i];
11427
11428                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
11429                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
11430                 }
11431         }
11432
11433         if (seq_points) {
11434                 MonoBasicBlock *bb;
11435
11436                 /*
11437                  * Make seq points at backward branch targets interruptable.
11438                  */
11439                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
11440                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
11441                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
11442         }
11443
11444         /* Add a sequence point for method entry/exit events */
11445         if (seq_points) {
11446                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
11447                 MONO_ADD_INS (init_localsbb, ins);
11448                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
11449                 MONO_ADD_INS (cfg->bb_exit, ins);
11450         }
11451
11452         cfg->ip = NULL;
11453
11454         if (cfg->method == method) {
11455                 MonoBasicBlock *bb;
11456                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
11457                         bb->region = mono_find_block_region (cfg, bb->real_offset);
11458                         if (cfg->spvars)
11459                                 mono_create_spvar_for_region (cfg, bb->region);
11460                         if (cfg->verbose_level > 2)
11461                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
11462                 }
11463         }
11464
11465         g_slist_free (class_inits);
11466         dont_inline = g_list_remove (dont_inline, method);
11467
11468         if (inline_costs < 0) {
11469                 char *mname;
11470
11471                 /* Method is too large */
11472                 mname = mono_method_full_name (method, TRUE);
11473                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
11474                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
11475                 g_free (mname);
11476                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11477                 mono_basic_block_free (original_bb);
11478                 return -1;
11479         }
11480
11481         if ((cfg->verbose_level > 2) && (cfg->method == method))
11482                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
11483
11484         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11485         mono_basic_block_free (original_bb);
11486         return inline_costs;
11487
11488  exception_exit:
11489         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
11490         goto cleanup;
11491
11492  inline_failure:
11493         goto cleanup;
11494
11495  load_error:
11496         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
11497         goto cleanup;
11498
11499  unverified:
11500         set_exception_type_from_invalid_il (cfg, method, ip);
11501         goto cleanup;
11502
11503  cleanup:
11504         g_slist_free (class_inits);
11505         mono_basic_block_free (original_bb);
11506         dont_inline = g_list_remove (dont_inline, method);
11507         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11508         return -1;
11509 }
11510
11511 static int
11512 store_membase_reg_to_store_membase_imm (int opcode)
11513 {
11514         switch (opcode) {
11515         case OP_STORE_MEMBASE_REG:
11516                 return OP_STORE_MEMBASE_IMM;
11517         case OP_STOREI1_MEMBASE_REG:
11518                 return OP_STOREI1_MEMBASE_IMM;
11519         case OP_STOREI2_MEMBASE_REG:
11520                 return OP_STOREI2_MEMBASE_IMM;
11521         case OP_STOREI4_MEMBASE_REG:
11522                 return OP_STOREI4_MEMBASE_IMM;
11523         case OP_STOREI8_MEMBASE_REG:
11524                 return OP_STOREI8_MEMBASE_IMM;
11525         default:
11526                 g_assert_not_reached ();
11527         }
11528
11529         return -1;
11530 }
11531
11532 int
11533 mono_op_to_op_imm (int opcode)
11534 {
11535         switch (opcode) {
11536         case OP_IADD:
11537                 return OP_IADD_IMM;
11538         case OP_ISUB:
11539                 return OP_ISUB_IMM;
11540         case OP_IDIV:
11541                 return OP_IDIV_IMM;
11542         case OP_IDIV_UN:
11543                 return OP_IDIV_UN_IMM;
11544         case OP_IREM:
11545                 return OP_IREM_IMM;
11546         case OP_IREM_UN:
11547                 return OP_IREM_UN_IMM;
11548         case OP_IMUL:
11549                 return OP_IMUL_IMM;
11550         case OP_IAND:
11551                 return OP_IAND_IMM;
11552         case OP_IOR:
11553                 return OP_IOR_IMM;
11554         case OP_IXOR:
11555                 return OP_IXOR_IMM;
11556         case OP_ISHL:
11557                 return OP_ISHL_IMM;
11558         case OP_ISHR:
11559                 return OP_ISHR_IMM;
11560         case OP_ISHR_UN:
11561                 return OP_ISHR_UN_IMM;
11562
11563         case OP_LADD:
11564                 return OP_LADD_IMM;
11565         case OP_LSUB:
11566                 return OP_LSUB_IMM;
11567         case OP_LAND:
11568                 return OP_LAND_IMM;
11569         case OP_LOR:
11570                 return OP_LOR_IMM;
11571         case OP_LXOR:
11572                 return OP_LXOR_IMM;
11573         case OP_LSHL:
11574                 return OP_LSHL_IMM;
11575         case OP_LSHR:
11576                 return OP_LSHR_IMM;
11577         case OP_LSHR_UN:
11578                 return OP_LSHR_UN_IMM;
11579
11580         case OP_COMPARE:
11581                 return OP_COMPARE_IMM;
11582         case OP_ICOMPARE:
11583                 return OP_ICOMPARE_IMM;
11584         case OP_LCOMPARE:
11585                 return OP_LCOMPARE_IMM;
11586
11587         case OP_STORE_MEMBASE_REG:
11588                 return OP_STORE_MEMBASE_IMM;
11589         case OP_STOREI1_MEMBASE_REG:
11590                 return OP_STOREI1_MEMBASE_IMM;
11591         case OP_STOREI2_MEMBASE_REG:
11592                 return OP_STOREI2_MEMBASE_IMM;
11593         case OP_STOREI4_MEMBASE_REG:
11594                 return OP_STOREI4_MEMBASE_IMM;
11595
11596 #if defined(TARGET_X86) || defined (TARGET_AMD64)
11597         case OP_X86_PUSH:
11598                 return OP_X86_PUSH_IMM;
11599         case OP_X86_COMPARE_MEMBASE_REG:
11600                 return OP_X86_COMPARE_MEMBASE_IMM;
11601 #endif
11602 #if defined(TARGET_AMD64)
11603         case OP_AMD64_ICOMPARE_MEMBASE_REG:
11604                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
11605 #endif
11606         case OP_VOIDCALL_REG:
11607                 return OP_VOIDCALL;
11608         case OP_CALL_REG:
11609                 return OP_CALL;
11610         case OP_LCALL_REG:
11611                 return OP_LCALL;
11612         case OP_FCALL_REG:
11613                 return OP_FCALL;
11614         case OP_LOCALLOC:
11615                 return OP_LOCALLOC_IMM;
11616         }
11617
11618         return -1;
11619 }
11620
11621 static int
11622 ldind_to_load_membase (int opcode)
11623 {
11624         switch (opcode) {
11625         case CEE_LDIND_I1:
11626                 return OP_LOADI1_MEMBASE;
11627         case CEE_LDIND_U1:
11628                 return OP_LOADU1_MEMBASE;
11629         case CEE_LDIND_I2:
11630                 return OP_LOADI2_MEMBASE;
11631         case CEE_LDIND_U2:
11632                 return OP_LOADU2_MEMBASE;
11633         case CEE_LDIND_I4:
11634                 return OP_LOADI4_MEMBASE;
11635         case CEE_LDIND_U4:
11636                 return OP_LOADU4_MEMBASE;
11637         case CEE_LDIND_I:
11638                 return OP_LOAD_MEMBASE;
11639         case CEE_LDIND_REF:
11640                 return OP_LOAD_MEMBASE;
11641         case CEE_LDIND_I8:
11642                 return OP_LOADI8_MEMBASE;
11643         case CEE_LDIND_R4:
11644                 return OP_LOADR4_MEMBASE;
11645         case CEE_LDIND_R8:
11646                 return OP_LOADR8_MEMBASE;
11647         default:
11648                 g_assert_not_reached ();
11649         }
11650
11651         return -1;
11652 }
11653
11654 static int
11655 stind_to_store_membase (int opcode)
11656 {
11657         switch (opcode) {
11658         case CEE_STIND_I1:
11659                 return OP_STOREI1_MEMBASE_REG;
11660         case CEE_STIND_I2:
11661                 return OP_STOREI2_MEMBASE_REG;
11662         case CEE_STIND_I4:
11663                 return OP_STOREI4_MEMBASE_REG;
11664         case CEE_STIND_I:
11665         case CEE_STIND_REF:
11666                 return OP_STORE_MEMBASE_REG;
11667         case CEE_STIND_I8:
11668                 return OP_STOREI8_MEMBASE_REG;
11669         case CEE_STIND_R4:
11670                 return OP_STORER4_MEMBASE_REG;
11671         case CEE_STIND_R8:
11672                 return OP_STORER8_MEMBASE_REG;
11673         default:
11674                 g_assert_not_reached ();
11675         }
11676
11677         return -1;
11678 }
11679
11680 int
11681 mono_load_membase_to_load_mem (int opcode)
11682 {
11683         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
11684 #if defined(TARGET_X86) || defined(TARGET_AMD64)
11685         switch (opcode) {
11686         case OP_LOAD_MEMBASE:
11687                 return OP_LOAD_MEM;
11688         case OP_LOADU1_MEMBASE:
11689                 return OP_LOADU1_MEM;
11690         case OP_LOADU2_MEMBASE:
11691                 return OP_LOADU2_MEM;
11692         case OP_LOADI4_MEMBASE:
11693                 return OP_LOADI4_MEM;
11694         case OP_LOADU4_MEMBASE:
11695                 return OP_LOADU4_MEM;
11696 #if SIZEOF_REGISTER == 8
11697         case OP_LOADI8_MEMBASE:
11698                 return OP_LOADI8_MEM;
11699 #endif
11700         }
11701 #endif
11702
11703         return -1;
11704 }
11705
11706 static inline int
11707 op_to_op_dest_membase (int store_opcode, int opcode)
11708 {
11709 #if defined(TARGET_X86)
11710         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
11711                 return -1;
11712
11713         switch (opcode) {
11714         case OP_IADD:
11715                 return OP_X86_ADD_MEMBASE_REG;
11716         case OP_ISUB:
11717                 return OP_X86_SUB_MEMBASE_REG;
11718         case OP_IAND:
11719                 return OP_X86_AND_MEMBASE_REG;
11720         case OP_IOR:
11721                 return OP_X86_OR_MEMBASE_REG;
11722         case OP_IXOR:
11723                 return OP_X86_XOR_MEMBASE_REG;
11724         case OP_ADD_IMM:
11725         case OP_IADD_IMM:
11726                 return OP_X86_ADD_MEMBASE_IMM;
11727         case OP_SUB_IMM:
11728         case OP_ISUB_IMM:
11729                 return OP_X86_SUB_MEMBASE_IMM;
11730         case OP_AND_IMM:
11731         case OP_IAND_IMM:
11732                 return OP_X86_AND_MEMBASE_IMM;
11733         case OP_OR_IMM:
11734         case OP_IOR_IMM:
11735                 return OP_X86_OR_MEMBASE_IMM;
11736         case OP_XOR_IMM:
11737         case OP_IXOR_IMM:
11738                 return OP_X86_XOR_MEMBASE_IMM;
11739         case OP_MOVE:
11740                 return OP_NOP;
11741         }
11742 #endif
11743
11744 #if defined(TARGET_AMD64)
11745         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
11746                 return -1;
11747
11748         switch (opcode) {
11749         case OP_IADD:
11750                 return OP_X86_ADD_MEMBASE_REG;
11751         case OP_ISUB:
11752                 return OP_X86_SUB_MEMBASE_REG;
11753         case OP_IAND:
11754                 return OP_X86_AND_MEMBASE_REG;
11755         case OP_IOR:
11756                 return OP_X86_OR_MEMBASE_REG;
11757         case OP_IXOR:
11758                 return OP_X86_XOR_MEMBASE_REG;
11759         case OP_IADD_IMM:
11760                 return OP_X86_ADD_MEMBASE_IMM;
11761         case OP_ISUB_IMM:
11762                 return OP_X86_SUB_MEMBASE_IMM;
11763         case OP_IAND_IMM:
11764                 return OP_X86_AND_MEMBASE_IMM;
11765         case OP_IOR_IMM:
11766                 return OP_X86_OR_MEMBASE_IMM;
11767         case OP_IXOR_IMM:
11768                 return OP_X86_XOR_MEMBASE_IMM;
11769         case OP_LADD:
11770                 return OP_AMD64_ADD_MEMBASE_REG;
11771         case OP_LSUB:
11772                 return OP_AMD64_SUB_MEMBASE_REG;
11773         case OP_LAND:
11774                 return OP_AMD64_AND_MEMBASE_REG;
11775         case OP_LOR:
11776                 return OP_AMD64_OR_MEMBASE_REG;
11777         case OP_LXOR:
11778                 return OP_AMD64_XOR_MEMBASE_REG;
11779         case OP_ADD_IMM:
11780         case OP_LADD_IMM:
11781                 return OP_AMD64_ADD_MEMBASE_IMM;
11782         case OP_SUB_IMM:
11783         case OP_LSUB_IMM:
11784                 return OP_AMD64_SUB_MEMBASE_IMM;
11785         case OP_AND_IMM:
11786         case OP_LAND_IMM:
11787                 return OP_AMD64_AND_MEMBASE_IMM;
11788         case OP_OR_IMM:
11789         case OP_LOR_IMM:
11790                 return OP_AMD64_OR_MEMBASE_IMM;
11791         case OP_XOR_IMM:
11792         case OP_LXOR_IMM:
11793                 return OP_AMD64_XOR_MEMBASE_IMM;
11794         case OP_MOVE:
11795                 return OP_NOP;
11796         }
11797 #endif
11798
11799         return -1;
11800 }
11801
11802 static inline int
11803 op_to_op_store_membase (int store_opcode, int opcode)
11804 {
11805 #if defined(TARGET_X86) || defined(TARGET_AMD64)
11806         switch (opcode) {
11807         case OP_ICEQ:
11808                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
11809                         return OP_X86_SETEQ_MEMBASE;
11810         case OP_CNE:
11811                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
11812                         return OP_X86_SETNE_MEMBASE;
11813         }
11814 #endif
11815
11816         return -1;
11817 }
11818
11819 static inline int
11820 op_to_op_src1_membase (int load_opcode, int opcode)
11821 {
11822 #ifdef TARGET_X86
11823         /* FIXME: This has sign extension issues */
11824         /*
11825         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
11826                 return OP_X86_COMPARE_MEMBASE8_IMM;
11827         */
11828
11829         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
11830                 return -1;
11831
11832         switch (opcode) {
11833         case OP_X86_PUSH:
11834                 return OP_X86_PUSH_MEMBASE;
11835         case OP_COMPARE_IMM:
11836         case OP_ICOMPARE_IMM:
11837                 return OP_X86_COMPARE_MEMBASE_IMM;
11838         case OP_COMPARE:
11839         case OP_ICOMPARE:
11840                 return OP_X86_COMPARE_MEMBASE_REG;
11841         }
11842 #endif
11843
11844 #ifdef TARGET_AMD64
11845         /* FIXME: This has sign extension issues */
11846         /*
11847         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
11848                 return OP_X86_COMPARE_MEMBASE8_IMM;
11849         */
11850
11851         switch (opcode) {
11852         case OP_X86_PUSH:
11853 #ifdef __mono_ilp32__
11854                 if (load_opcode == OP_LOADI8_MEMBASE)
11855 #else
11856                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
11857 #endif
11858                         return OP_X86_PUSH_MEMBASE;
11859                 break;
11860                 /* FIXME: This only works for 32 bit immediates
11861         case OP_COMPARE_IMM:
11862         case OP_LCOMPARE_IMM:
11863                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
11864                         return OP_AMD64_COMPARE_MEMBASE_IMM;
11865                 */
11866         case OP_ICOMPARE_IMM:
11867                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
11868                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
11869                 break;
11870         case OP_COMPARE:
11871         case OP_LCOMPARE:
11872 #ifdef __mono_ilp32__
11873                 if (load_opcode == OP_LOAD_MEMBASE)
11874                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
11875                 if (load_opcode == OP_LOADI8_MEMBASE)
11876 #else
11877                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
11878 #endif
11879                         return OP_AMD64_COMPARE_MEMBASE_REG;
11880                 break;
11881         case OP_ICOMPARE:
11882                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
11883                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
11884                 break;
11885         }
11886 #endif
11887
11888         return -1;
11889 }
11890
11891 static inline int
11892 op_to_op_src2_membase (int load_opcode, int opcode)
11893 {
11894 #ifdef TARGET_X86
11895         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
11896                 return -1;
11897
11898         switch (opcode) {
11899         case OP_COMPARE:
11900         case OP_ICOMPARE:
11901                 return OP_X86_COMPARE_REG_MEMBASE;
11902         case OP_IADD:
11903                 return OP_X86_ADD_REG_MEMBASE;
11904         case OP_ISUB:
11905                 return OP_X86_SUB_REG_MEMBASE;
11906         case OP_IAND:
11907                 return OP_X86_AND_REG_MEMBASE;
11908         case OP_IOR:
11909                 return OP_X86_OR_REG_MEMBASE;
11910         case OP_IXOR:
11911                 return OP_X86_XOR_REG_MEMBASE;
11912         }
11913 #endif
11914
11915 #ifdef TARGET_AMD64
11916 #ifdef __mono_ilp32__
11917         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
11918 #else
11919         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)) {
11920 #endif
11921                 switch (opcode) {
11922                 case OP_ICOMPARE:
11923                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
11924                 case OP_IADD:
11925                         return OP_X86_ADD_REG_MEMBASE;
11926                 case OP_ISUB:
11927                         return OP_X86_SUB_REG_MEMBASE;
11928                 case OP_IAND:
11929                         return OP_X86_AND_REG_MEMBASE;
11930                 case OP_IOR:
11931                         return OP_X86_OR_REG_MEMBASE;
11932                 case OP_IXOR:
11933                         return OP_X86_XOR_REG_MEMBASE;
11934                 }
11935 #ifdef __mono_ilp32__
11936         } else if (load_opcode == OP_LOADI8_MEMBASE) {
11937 #else
11938         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE)) {
11939 #endif
11940                 switch (opcode) {
11941                 case OP_COMPARE:
11942                 case OP_LCOMPARE:
11943                         return OP_AMD64_COMPARE_REG_MEMBASE;
11944                 case OP_LADD:
11945                         return OP_AMD64_ADD_REG_MEMBASE;
11946                 case OP_LSUB:
11947                         return OP_AMD64_SUB_REG_MEMBASE;
11948                 case OP_LAND:
11949                         return OP_AMD64_AND_REG_MEMBASE;
11950                 case OP_LOR:
11951                         return OP_AMD64_OR_REG_MEMBASE;
11952                 case OP_LXOR:
11953                         return OP_AMD64_XOR_REG_MEMBASE;
11954                 }
11955         }
11956 #endif
11957
11958         return -1;
11959 }
11960
11961 int
11962 mono_op_to_op_imm_noemul (int opcode)
11963 {
11964         switch (opcode) {
11965 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
11966         case OP_LSHR:
11967         case OP_LSHL:
11968         case OP_LSHR_UN:
11969                 return -1;
11970 #endif
11971 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
11972         case OP_IDIV:
11973         case OP_IDIV_UN:
11974         case OP_IREM:
11975         case OP_IREM_UN:
11976                 return -1;
11977 #endif
11978 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
11979         case OP_IMUL:
11980                 return -1;
11981 #endif
11982         default:
11983                 return mono_op_to_op_imm (opcode);
11984         }
11985 }
11986
11987 /**
11988  * mono_handle_global_vregs:
11989  *
11990  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
11991  * for them.
11992  */
11993 void
11994 mono_handle_global_vregs (MonoCompile *cfg)
11995 {
11996         gint32 *vreg_to_bb;
11997         MonoBasicBlock *bb;
11998         int i, pos;
11999
12000         vreg_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
12001
12002 #ifdef MONO_ARCH_SIMD_INTRINSICS
12003         if (cfg->uses_simd_intrinsics)
12004                 mono_simd_simplify_indirection (cfg);
12005 #endif
12006
12007         /* Find local vregs used in more than one bb */
12008         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12009                 MonoInst *ins = bb->code;
12010                 int block_num = bb->block_num;
12011
12012                 if (cfg->verbose_level > 2)
12013                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
12014
12015                 cfg->cbb = bb;
12016                 for (; ins; ins = ins->next) {
12017                         const char *spec = INS_INFO (ins->opcode);
12018                         int regtype = 0, regindex;
12019                         gint32 prev_bb;
12020
12021                         if (G_UNLIKELY (cfg->verbose_level > 2))
12022                                 mono_print_ins (ins);
12023
12024                         g_assert (ins->opcode >= MONO_CEE_LAST);
12025
12026                         for (regindex = 0; regindex < 4; regindex ++) {
12027                                 int vreg = 0;
12028
12029                                 if (regindex == 0) {
12030                                         regtype = spec [MONO_INST_DEST];
12031                                         if (regtype == ' ')
12032                                                 continue;
12033                                         vreg = ins->dreg;
12034                                 } else if (regindex == 1) {
12035                                         regtype = spec [MONO_INST_SRC1];
12036                                         if (regtype == ' ')
12037                                                 continue;
12038                                         vreg = ins->sreg1;
12039                                 } else if (regindex == 2) {
12040                                         regtype = spec [MONO_INST_SRC2];
12041                                         if (regtype == ' ')
12042                                                 continue;
12043                                         vreg = ins->sreg2;
12044                                 } else if (regindex == 3) {
12045                                         regtype = spec [MONO_INST_SRC3];
12046                                         if (regtype == ' ')
12047                                                 continue;
12048                                         vreg = ins->sreg3;
12049                                 }
12050
12051 #if SIZEOF_REGISTER == 4
12052                                 /* In the LLVM case, the long opcodes are not decomposed */
12053                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
12054                                         /*
12055                                          * Since some instructions reference the original long vreg,
12056                                          * and some reference the two component vregs, it is quite hard
12057                                          * to determine when it needs to be global. So be conservative.
12058                                          */
12059                                         if (!get_vreg_to_inst (cfg, vreg)) {
12060                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
12061
12062                                                 if (cfg->verbose_level > 2)
12063                                                         printf ("LONG VREG R%d made global.\n", vreg);
12064                                         }
12065
12066                                         /*
12067                                          * Make the component vregs volatile since the optimizations can
12068                                          * get confused otherwise.
12069                                          */
12070                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
12071                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
12072                                 }
12073 #endif
12074
12075                                 g_assert (vreg != -1);
12076
12077                                 prev_bb = vreg_to_bb [vreg];
12078                                 if (prev_bb == 0) {
12079                                         /* 0 is a valid block num */
12080                                         vreg_to_bb [vreg] = block_num + 1;
12081                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
12082                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
12083                                                 continue;
12084
12085                                         if (!get_vreg_to_inst (cfg, vreg)) {
12086                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12087                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
12088
12089                                                 switch (regtype) {
12090                                                 case 'i':
12091                                                         if (vreg_is_ref (cfg, vreg))
12092                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
12093                                                         else
12094                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
12095                                                         break;
12096                                                 case 'l':
12097                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
12098                                                         break;
12099                                                 case 'f':
12100                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
12101                                                         break;
12102                                                 case 'v':
12103                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
12104                                                         break;
12105                                                 default:
12106                                                         g_assert_not_reached ();
12107                                                 }
12108                                         }
12109
12110                                         /* Flag as having been used in more than one bb */
12111                                         vreg_to_bb [vreg] = -1;
12112                                 }
12113                         }
12114                 }
12115         }
12116
12117         /* If a variable is used in only one bblock, convert it into a local vreg */
12118         for (i = 0; i < cfg->num_varinfo; i++) {
12119                 MonoInst *var = cfg->varinfo [i];
12120                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
12121
12122                 switch (var->type) {
12123                 case STACK_I4:
12124                 case STACK_OBJ:
12125                 case STACK_PTR:
12126                 case STACK_MP:
12127                 case STACK_VTYPE:
12128 #if SIZEOF_REGISTER == 8
12129                 case STACK_I8:
12130 #endif
12131 #if !defined(TARGET_X86) && !defined(MONO_ARCH_SOFT_FLOAT)
12132                 /* Enabling this screws up the fp stack on x86 */
12133                 case STACK_R8:
12134 #endif
12135                         /* Arguments are implicitly global */
12136                         /* Putting R4 vars into registers doesn't work currently */
12137                         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) {
12138                                 /*
12139                                  * Make that the variable's liveness interval doesn't contain a call, since
12140                                  * that would cause the lvreg to be spilled, making the whole optimization
12141                                  * useless.
12142                                  */
12143                                 /* This is too slow for JIT compilation */
12144 #if 0
12145                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
12146                                         MonoInst *ins;
12147                                         int def_index, call_index, ins_index;
12148                                         gboolean spilled = FALSE;
12149
12150                                         def_index = -1;
12151                                         call_index = -1;
12152                                         ins_index = 0;
12153                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
12154                                                 const char *spec = INS_INFO (ins->opcode);
12155
12156                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
12157                                                         def_index = ins_index;
12158
12159                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
12160                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
12161                                                         if (call_index > def_index) {
12162                                                                 spilled = TRUE;
12163                                                                 break;
12164                                                         }
12165                                                 }
12166
12167                                                 if (MONO_IS_CALL (ins))
12168                                                         call_index = ins_index;
12169
12170                                                 ins_index ++;
12171                                         }
12172
12173                                         if (spilled)
12174                                                 break;
12175                                 }
12176 #endif
12177
12178                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12179                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
12180                                 var->flags |= MONO_INST_IS_DEAD;
12181                                 cfg->vreg_to_inst [var->dreg] = NULL;
12182                         }
12183                         break;
12184                 }
12185         }
12186
12187         /*
12188          * Compress the varinfo and vars tables so the liveness computation is faster and
12189          * takes up less space.
12190          */
12191         pos = 0;
12192         for (i = 0; i < cfg->num_varinfo; ++i) {
12193                 MonoInst *var = cfg->varinfo [i];
12194                 if (pos < i && cfg->locals_start == i)
12195                         cfg->locals_start = pos;
12196                 if (!(var->flags & MONO_INST_IS_DEAD)) {
12197                         if (pos < i) {
12198                                 cfg->varinfo [pos] = cfg->varinfo [i];
12199                                 cfg->varinfo [pos]->inst_c0 = pos;
12200                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
12201                                 cfg->vars [pos].idx = pos;
12202 #if SIZEOF_REGISTER == 4
12203                                 if (cfg->varinfo [pos]->type == STACK_I8) {
12204                                         /* Modify the two component vars too */
12205                                         MonoInst *var1;
12206
12207                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
12208                                         var1->inst_c0 = pos;
12209                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
12210                                         var1->inst_c0 = pos;
12211                                 }
12212 #endif
12213                         }
12214                         pos ++;
12215                 }
12216         }
12217         cfg->num_varinfo = pos;
12218         if (cfg->locals_start > cfg->num_varinfo)
12219                 cfg->locals_start = cfg->num_varinfo;
12220 }
12221
12222 /**
12223  * mono_spill_global_vars:
12224  *
12225  *   Generate spill code for variables which are not allocated to registers,
12226  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
12227  * code is generated which could be optimized by the local optimization passes.
12228  */
12229 void
12230 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
12231 {
12232         MonoBasicBlock *bb;
12233         char spec2 [16];
12234         int orig_next_vreg;
12235         guint32 *vreg_to_lvreg;
12236         guint32 *lvregs;
12237         guint32 i, lvregs_len;
12238         gboolean dest_has_lvreg = FALSE;
12239         guint32 stacktypes [128];
12240         MonoInst **live_range_start, **live_range_end;
12241         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
12242
12243         *need_local_opts = FALSE;
12244
12245         memset (spec2, 0, sizeof (spec2));
12246
12247         /* FIXME: Move this function to mini.c */
12248         stacktypes ['i'] = STACK_PTR;
12249         stacktypes ['l'] = STACK_I8;
12250         stacktypes ['f'] = STACK_R8;
12251 #ifdef MONO_ARCH_SIMD_INTRINSICS
12252         stacktypes ['x'] = STACK_VTYPE;
12253 #endif
12254
12255 #if SIZEOF_REGISTER == 4
12256         /* Create MonoInsts for longs */
12257         for (i = 0; i < cfg->num_varinfo; i++) {
12258                 MonoInst *ins = cfg->varinfo [i];
12259
12260                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
12261                         switch (ins->type) {
12262                         case STACK_R8:
12263                         case STACK_I8: {
12264                                 MonoInst *tree;
12265
12266                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
12267                                         break;
12268
12269                                 g_assert (ins->opcode == OP_REGOFFSET);
12270
12271                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
12272                                 g_assert (tree);
12273                                 tree->opcode = OP_REGOFFSET;
12274                                 tree->inst_basereg = ins->inst_basereg;
12275                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
12276
12277                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
12278                                 g_assert (tree);
12279                                 tree->opcode = OP_REGOFFSET;
12280                                 tree->inst_basereg = ins->inst_basereg;
12281                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
12282                                 break;
12283                         }
12284                         default:
12285                                 break;
12286                         }
12287                 }
12288         }
12289 #endif
12290
12291         if (cfg->compute_gc_maps) {
12292                 /* registers need liveness info even for !non refs */
12293                 for (i = 0; i < cfg->num_varinfo; i++) {
12294                         MonoInst *ins = cfg->varinfo [i];
12295
12296                         if (ins->opcode == OP_REGVAR)
12297                                 ins->flags |= MONO_INST_GC_TRACK;
12298                 }
12299         }
12300
12301         /* FIXME: widening and truncation */
12302
12303         /*
12304          * As an optimization, when a variable allocated to the stack is first loaded into
12305          * an lvreg, we will remember the lvreg and use it the next time instead of loading
12306          * the variable again.
12307          */
12308         orig_next_vreg = cfg->next_vreg;
12309         vreg_to_lvreg = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
12310         lvregs = mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
12311         lvregs_len = 0;
12312
12313         /*
12314          * These arrays contain the first and last instructions accessing a given
12315          * variable.
12316          * Since we emit bblocks in the same order we process them here, and we
12317          * don't split live ranges, these will precisely describe the live range of
12318          * the variable, i.e. the instruction range where a valid value can be found
12319          * in the variables location.
12320          * The live range is computed using the liveness info computed by the liveness pass.
12321          * We can't use vmv->range, since that is an abstract live range, and we need
12322          * one which is instruction precise.
12323          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
12324          */
12325         /* FIXME: Only do this if debugging info is requested */
12326         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
12327         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
12328         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
12329         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
12330
12331         /* Add spill loads/stores */
12332         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12333                 MonoInst *ins;
12334
12335                 if (cfg->verbose_level > 2)
12336                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
12337
12338                 /* Clear vreg_to_lvreg array */
12339                 for (i = 0; i < lvregs_len; i++)
12340                         vreg_to_lvreg [lvregs [i]] = 0;
12341                 lvregs_len = 0;
12342
12343                 cfg->cbb = bb;
12344                 MONO_BB_FOR_EACH_INS (bb, ins) {
12345                         const char *spec = INS_INFO (ins->opcode);
12346                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
12347                         gboolean store, no_lvreg;
12348                         int sregs [MONO_MAX_SRC_REGS];
12349
12350                         if (G_UNLIKELY (cfg->verbose_level > 2))
12351                                 mono_print_ins (ins);
12352
12353                         if (ins->opcode == OP_NOP)
12354                                 continue;
12355
12356                         /*
12357                          * We handle LDADDR here as well, since it can only be decomposed
12358                          * when variable addresses are known.
12359                          */
12360                         if (ins->opcode == OP_LDADDR) {
12361                                 MonoInst *var = ins->inst_p0;
12362
12363                                 if (var->opcode == OP_VTARG_ADDR) {
12364                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
12365                                         MonoInst *vtaddr = var->inst_left;
12366                                         if (vtaddr->opcode == OP_REGVAR) {
12367                                                 ins->opcode = OP_MOVE;
12368                                                 ins->sreg1 = vtaddr->dreg;
12369                                         }
12370                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
12371                                                 ins->opcode = OP_LOAD_MEMBASE;
12372                                                 ins->inst_basereg = vtaddr->inst_basereg;
12373                                                 ins->inst_offset = vtaddr->inst_offset;
12374                                         } else
12375                                                 NOT_IMPLEMENTED;
12376                                 } else {
12377                                         g_assert (var->opcode == OP_REGOFFSET);
12378
12379                                         ins->opcode = OP_ADD_IMM;
12380                                         ins->sreg1 = var->inst_basereg;
12381                                         ins->inst_imm = var->inst_offset;
12382                                 }
12383
12384                                 *need_local_opts = TRUE;
12385                                 spec = INS_INFO (ins->opcode);
12386                         }
12387
12388                         if (ins->opcode < MONO_CEE_LAST) {
12389                                 mono_print_ins (ins);
12390                                 g_assert_not_reached ();
12391                         }
12392
12393                         /*
12394                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
12395                          * src register.
12396                          * FIXME:
12397                          */
12398                         if (MONO_IS_STORE_MEMBASE (ins)) {
12399                                 tmp_reg = ins->dreg;
12400                                 ins->dreg = ins->sreg2;
12401                                 ins->sreg2 = tmp_reg;
12402                                 store = TRUE;
12403
12404                                 spec2 [MONO_INST_DEST] = ' ';
12405                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
12406                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
12407                                 spec2 [MONO_INST_SRC3] = ' ';
12408                                 spec = spec2;
12409                         } else if (MONO_IS_STORE_MEMINDEX (ins))
12410                                 g_assert_not_reached ();
12411                         else
12412                                 store = FALSE;
12413                         no_lvreg = FALSE;
12414
12415                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
12416                                 printf ("\t %.3s %d", spec, ins->dreg);
12417                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
12418                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
12419                                         printf (" %d", sregs [srcindex]);
12420                                 printf ("\n");
12421                         }
12422
12423                         /***************/
12424                         /*    DREG     */
12425                         /***************/
12426                         regtype = spec [MONO_INST_DEST];
12427                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
12428                         prev_dreg = -1;
12429
12430                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
12431                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
12432                                 MonoInst *store_ins;
12433                                 int store_opcode;
12434                                 MonoInst *def_ins = ins;
12435                                 int dreg = ins->dreg; /* The original vreg */
12436
12437                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
12438
12439                                 if (var->opcode == OP_REGVAR) {
12440                                         ins->dreg = var->dreg;
12441                                 } 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)) {
12442                                         /*
12443                                          * Instead of emitting a load+store, use a _membase opcode.
12444                                          */
12445                                         g_assert (var->opcode == OP_REGOFFSET);
12446                                         if (ins->opcode == OP_MOVE) {
12447                                                 NULLIFY_INS (ins);
12448                                                 def_ins = NULL;
12449                                         } else {
12450                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
12451                                                 ins->inst_basereg = var->inst_basereg;
12452                                                 ins->inst_offset = var->inst_offset;
12453                                                 ins->dreg = -1;
12454                                         }
12455                                         spec = INS_INFO (ins->opcode);
12456                                 } else {
12457                                         guint32 lvreg;
12458
12459                                         g_assert (var->opcode == OP_REGOFFSET);
12460
12461                                         prev_dreg = ins->dreg;
12462
12463                                         /* Invalidate any previous lvreg for this vreg */
12464                                         vreg_to_lvreg [ins->dreg] = 0;
12465
12466                                         lvreg = 0;
12467
12468                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
12469                                                 regtype = 'l';
12470                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
12471                                         }
12472
12473                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
12474
12475 #if SIZEOF_REGISTER != 8
12476                                         if (regtype == 'l') {
12477                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
12478                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
12479                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
12480                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
12481                                                 def_ins = store_ins;
12482                                         }
12483                                         else
12484 #endif
12485                                         {
12486                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
12487
12488                                                 /* Try to fuse the store into the instruction itself */
12489                                                 /* FIXME: Add more instructions */
12490                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
12491                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
12492                                                         ins->inst_imm = ins->inst_c0;
12493                                                         ins->inst_destbasereg = var->inst_basereg;
12494                                                         ins->inst_offset = var->inst_offset;
12495                                                         spec = INS_INFO (ins->opcode);
12496                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE))) {
12497                                                         ins->opcode = store_opcode;
12498                                                         ins->inst_destbasereg = var->inst_basereg;
12499                                                         ins->inst_offset = var->inst_offset;
12500
12501                                                         no_lvreg = TRUE;
12502
12503                                                         tmp_reg = ins->dreg;
12504                                                         ins->dreg = ins->sreg2;
12505                                                         ins->sreg2 = tmp_reg;
12506                                                         store = TRUE;
12507
12508                                                         spec2 [MONO_INST_DEST] = ' ';
12509                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
12510                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
12511                                                         spec2 [MONO_INST_SRC3] = ' ';
12512                                                         spec = spec2;
12513                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
12514                                                         // FIXME: The backends expect the base reg to be in inst_basereg
12515                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
12516                                                         ins->dreg = -1;
12517                                                         ins->inst_basereg = var->inst_basereg;
12518                                                         ins->inst_offset = var->inst_offset;
12519                                                         spec = INS_INFO (ins->opcode);
12520                                                 } else {
12521                                                         /* printf ("INS: "); mono_print_ins (ins); */
12522                                                         /* Create a store instruction */
12523                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
12524
12525                                                         /* Insert it after the instruction */
12526                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
12527
12528                                                         def_ins = store_ins;
12529
12530                                                         /*
12531                                                          * We can't assign ins->dreg to var->dreg here, since the
12532                                                          * sregs could use it. So set a flag, and do it after
12533                                                          * the sregs.
12534                                                          */
12535                                                         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)))
12536                                                                 dest_has_lvreg = TRUE;
12537                                                 }
12538                                         }
12539                                 }
12540
12541                                 if (def_ins && !live_range_start [dreg]) {
12542                                         live_range_start [dreg] = def_ins;
12543                                         live_range_start_bb [dreg] = bb;
12544                                 }
12545
12546                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
12547                                         MonoInst *tmp;
12548
12549                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
12550                                         tmp->inst_c1 = dreg;
12551                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
12552                                 }
12553                         }
12554
12555                         /************/
12556                         /*  SREGS   */
12557                         /************/
12558                         num_sregs = mono_inst_get_src_registers (ins, sregs);
12559                         for (srcindex = 0; srcindex < 3; ++srcindex) {
12560                                 regtype = spec [MONO_INST_SRC1 + srcindex];
12561                                 sreg = sregs [srcindex];
12562
12563                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
12564                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
12565                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
12566                                         MonoInst *use_ins = ins;
12567                                         MonoInst *load_ins;
12568                                         guint32 load_opcode;
12569
12570                                         if (var->opcode == OP_REGVAR) {
12571                                                 sregs [srcindex] = var->dreg;
12572                                                 //mono_inst_set_src_registers (ins, sregs);
12573                                                 live_range_end [sreg] = use_ins;
12574                                                 live_range_end_bb [sreg] = bb;
12575
12576                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
12577                                                         MonoInst *tmp;
12578
12579                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
12580                                                         /* var->dreg is a hreg */
12581                                                         tmp->inst_c1 = sreg;
12582                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
12583                                                 }
12584
12585                                                 continue;
12586                                         }
12587
12588                                         g_assert (var->opcode == OP_REGOFFSET);
12589
12590                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
12591
12592                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
12593
12594                                         if (vreg_to_lvreg [sreg]) {
12595                                                 g_assert (vreg_to_lvreg [sreg] != -1);
12596
12597                                                 /* The variable is already loaded to an lvreg */
12598                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12599                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
12600                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
12601                                                 //mono_inst_set_src_registers (ins, sregs);
12602                                                 continue;
12603                                         }
12604
12605                                         /* Try to fuse the load into the instruction */
12606                                         if ((srcindex == 0) && (op_to_op_src1_membase (load_opcode, ins->opcode) != -1)) {
12607                                                 ins->opcode = op_to_op_src1_membase (load_opcode, ins->opcode);
12608                                                 sregs [0] = var->inst_basereg;
12609                                                 //mono_inst_set_src_registers (ins, sregs);
12610                                                 ins->inst_offset = var->inst_offset;
12611                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (load_opcode, ins->opcode) != -1)) {
12612                                                 ins->opcode = op_to_op_src2_membase (load_opcode, ins->opcode);
12613                                                 sregs [1] = var->inst_basereg;
12614                                                 //mono_inst_set_src_registers (ins, sregs);
12615                                                 ins->inst_offset = var->inst_offset;
12616                                         } else {
12617                                                 if (MONO_IS_REAL_MOVE (ins)) {
12618                                                         ins->opcode = OP_NOP;
12619                                                         sreg = ins->dreg;
12620                                                 } else {
12621                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
12622
12623                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
12624
12625                                                         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) {
12626                                                                 if (var->dreg == prev_dreg) {
12627                                                                         /*
12628                                                                          * sreg refers to the value loaded by the load
12629                                                                          * emitted below, but we need to use ins->dreg
12630                                                                          * since it refers to the store emitted earlier.
12631                                                                          */
12632                                                                         sreg = ins->dreg;
12633                                                                 }
12634                                                                 g_assert (sreg != -1);
12635                                                                 vreg_to_lvreg [var->dreg] = sreg;
12636                                                                 g_assert (lvregs_len < 1024);
12637                                                                 lvregs [lvregs_len ++] = var->dreg;
12638                                                         }
12639                                                 }
12640
12641                                                 sregs [srcindex] = sreg;
12642                                                 //mono_inst_set_src_registers (ins, sregs);
12643
12644 #if SIZEOF_REGISTER != 8
12645                                                 if (regtype == 'l') {
12646                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
12647                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
12648                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
12649                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
12650                                                         use_ins = load_ins;
12651                                                 }
12652                                                 else
12653 #endif
12654                                                 {
12655 #if SIZEOF_REGISTER == 4
12656                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
12657 #endif
12658                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
12659                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
12660                                                         use_ins = load_ins;
12661                                                 }
12662                                         }
12663
12664                                         if (var->dreg < orig_next_vreg) {
12665                                                 live_range_end [var->dreg] = use_ins;
12666                                                 live_range_end_bb [var->dreg] = bb;
12667                                         }
12668
12669                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
12670                                                 MonoInst *tmp;
12671
12672                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
12673                                                 tmp->inst_c1 = var->dreg;
12674                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
12675                                         }
12676                                 }
12677                         }
12678                         mono_inst_set_src_registers (ins, sregs);
12679
12680                         if (dest_has_lvreg) {
12681                                 g_assert (ins->dreg != -1);
12682                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
12683                                 g_assert (lvregs_len < 1024);
12684                                 lvregs [lvregs_len ++] = prev_dreg;
12685                                 dest_has_lvreg = FALSE;
12686                         }
12687
12688                         if (store) {
12689                                 tmp_reg = ins->dreg;
12690                                 ins->dreg = ins->sreg2;
12691                                 ins->sreg2 = tmp_reg;
12692                         }
12693
12694                         if (MONO_IS_CALL (ins)) {
12695                                 /* Clear vreg_to_lvreg array */
12696                                 for (i = 0; i < lvregs_len; i++)
12697                                         vreg_to_lvreg [lvregs [i]] = 0;
12698                                 lvregs_len = 0;
12699                         } else if (ins->opcode == OP_NOP) {
12700                                 ins->dreg = -1;
12701                                 MONO_INST_NULLIFY_SREGS (ins);
12702                         }
12703
12704                         if (cfg->verbose_level > 2)
12705                                 mono_print_ins_index (1, ins);
12706                 }
12707
12708                 /* Extend the live range based on the liveness info */
12709                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
12710                         for (i = 0; i < cfg->num_varinfo; i ++) {
12711                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
12712
12713                                 if (vreg_is_volatile (cfg, vi->vreg))
12714                                         /* The liveness info is incomplete */
12715                                         continue;
12716
12717                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
12718                                         /* Live from at least the first ins of this bb */
12719                                         live_range_start [vi->vreg] = bb->code;
12720                                         live_range_start_bb [vi->vreg] = bb;
12721                                 }
12722
12723                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
12724                                         /* Live at least until the last ins of this bb */
12725                                         live_range_end [vi->vreg] = bb->last_ins;
12726                                         live_range_end_bb [vi->vreg] = bb;
12727                                 }
12728                         }
12729                 }
12730         }
12731
12732 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
12733         /*
12734          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
12735          * by storing the current native offset into MonoMethodVar->live_range_start/end.
12736          */
12737         if (cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
12738                 for (i = 0; i < cfg->num_varinfo; ++i) {
12739                         int vreg = MONO_VARINFO (cfg, i)->vreg;
12740                         MonoInst *ins;
12741
12742                         if (live_range_start [vreg]) {
12743                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
12744                                 ins->inst_c0 = i;
12745                                 ins->inst_c1 = vreg;
12746                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
12747                         }
12748                         if (live_range_end [vreg]) {
12749                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
12750                                 ins->inst_c0 = i;
12751                                 ins->inst_c1 = vreg;
12752                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
12753                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
12754                                 else
12755                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
12756                         }
12757                 }
12758         }
12759 #endif
12760
12761         g_free (live_range_start);
12762         g_free (live_range_end);
12763         g_free (live_range_start_bb);
12764         g_free (live_range_end_bb);
12765 }
12766
12767 /**
12768  * FIXME:
12769  * - use 'iadd' instead of 'int_add'
12770  * - handling ovf opcodes: decompose in method_to_ir.
12771  * - unify iregs/fregs
12772  *   -> partly done, the missing parts are:
12773  *   - a more complete unification would involve unifying the hregs as well, so
12774  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
12775  *     would no longer map to the machine hregs, so the code generators would need to
12776  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
12777  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
12778  *     fp/non-fp branches speeds it up by about 15%.
12779  * - use sext/zext opcodes instead of shifts
12780  * - add OP_ICALL
12781  * - get rid of TEMPLOADs if possible and use vregs instead
12782  * - clean up usage of OP_P/OP_ opcodes
12783  * - cleanup usage of DUMMY_USE
12784  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
12785  *   stack
12786  * - set the stack type and allocate a dreg in the EMIT_NEW macros
12787  * - get rid of all the <foo>2 stuff when the new JIT is ready.
12788  * - make sure handle_stack_args () is called before the branch is emitted
12789  * - when the new IR is done, get rid of all unused stuff
12790  * - COMPARE/BEQ as separate instructions or unify them ?
12791  *   - keeping them separate allows specialized compare instructions like
12792  *     compare_imm, compare_membase
12793  *   - most back ends unify fp compare+branch, fp compare+ceq
12794  * - integrate mono_save_args into inline_method
12795  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
12796  * - handle long shift opts on 32 bit platforms somehow: they require
12797  *   3 sregs (2 for arg1 and 1 for arg2)
12798  * - make byref a 'normal' type.
12799  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
12800  *   variable if needed.
12801  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
12802  *   like inline_method.
12803  * - remove inlining restrictions
12804  * - fix LNEG and enable cfold of INEG
12805  * - generalize x86 optimizations like ldelema as a peephole optimization
12806  * - add store_mem_imm for amd64
12807  * - optimize the loading of the interruption flag in the managed->native wrappers
12808  * - avoid special handling of OP_NOP in passes
12809  * - move code inserting instructions into one function/macro.
12810  * - try a coalescing phase after liveness analysis
12811  * - add float -> vreg conversion + local optimizations on !x86
12812  * - figure out how to handle decomposed branches during optimizations, ie.
12813  *   compare+branch, op_jump_table+op_br etc.
12814  * - promote RuntimeXHandles to vregs
12815  * - vtype cleanups:
12816  *   - add a NEW_VARLOADA_VREG macro
12817  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
12818  *   accessing vtype fields.
12819  * - get rid of I8CONST on 64 bit platforms
12820  * - dealing with the increase in code size due to branches created during opcode
12821  *   decomposition:
12822  *   - use extended basic blocks
12823  *     - all parts of the JIT
12824  *     - handle_global_vregs () && local regalloc
12825  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
12826  * - sources of increase in code size:
12827  *   - vtypes
12828  *   - long compares
12829  *   - isinst and castclass
12830  *   - lvregs not allocated to global registers even if used multiple times
12831  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
12832  *   meaningful.
12833  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
12834  * - add all micro optimizations from the old JIT
12835  * - put tree optimizations into the deadce pass
12836  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
12837  *   specific function.
12838  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
12839  *   fcompare + branchCC.
12840  * - create a helper function for allocating a stack slot, taking into account
12841  *   MONO_CFG_HAS_SPILLUP.
12842  * - merge r68207.
12843  * - merge the ia64 switch changes.
12844  * - optimize mono_regstate2_alloc_int/float.
12845  * - fix the pessimistic handling of variables accessed in exception handler blocks.
12846  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
12847  *   parts of the tree could be separated by other instructions, killing the tree
12848  *   arguments, or stores killing loads etc. Also, should we fold loads into other
12849  *   instructions if the result of the load is used multiple times ?
12850  * - make the REM_IMM optimization in mini-x86.c arch-independent.
12851  * - LAST MERGE: 108395.
12852  * - when returning vtypes in registers, generate IR and append it to the end of the
12853  *   last bb instead of doing it in the epilog.
12854  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
12855  */
12856
12857 /*
12858
12859 NOTES
12860 -----
12861
12862 - When to decompose opcodes:
12863   - earlier: this makes some optimizations hard to implement, since the low level IR
12864   no longer contains the neccessary information. But it is easier to do.
12865   - later: harder to implement, enables more optimizations.
12866 - Branches inside bblocks:
12867   - created when decomposing complex opcodes.
12868     - branches to another bblock: harmless, but not tracked by the branch
12869       optimizations, so need to branch to a label at the start of the bblock.
12870     - branches to inside the same bblock: very problematic, trips up the local
12871       reg allocator. Can be fixed by spitting the current bblock, but that is a
12872       complex operation, since some local vregs can become global vregs etc.
12873 - Local/global vregs:
12874   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
12875     local register allocator.
12876   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
12877     structure, created by mono_create_var (). Assigned to hregs or the stack by
12878     the global register allocator.
12879 - When to do optimizations like alu->alu_imm:
12880   - earlier -> saves work later on since the IR will be smaller/simpler
12881   - later -> can work on more instructions
12882 - Handling of valuetypes:
12883   - When a vtype is pushed on the stack, a new temporary is created, an
12884     instruction computing its address (LDADDR) is emitted and pushed on
12885     the stack. Need to optimize cases when the vtype is used immediately as in
12886     argument passing, stloc etc.
12887 - Instead of the to_end stuff in the old JIT, simply call the function handling
12888   the values on the stack before emitting the last instruction of the bb.
12889 */
12890
12891 #endif /* DISABLE_JIT */