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         case MONO_TYPE_VAR:
1920         case MONO_TYPE_MVAR:
1921                 /* gsharedvt */
1922                 return calli? OP_VCALL_REG: virt? OP_VCALLVIRT: OP_VCALL;
1923         default:
1924                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1925         }
1926         return -1;
1927 }
1928
1929 /*
1930  * target_type_is_incompatible:
1931  * @cfg: MonoCompile context
1932  *
1933  * Check that the item @arg on the evaluation stack can be stored
1934  * in the target type (can be a local, or field, etc).
1935  * The cfg arg can be used to check if we need verification or just
1936  * validity checks.
1937  *
1938  * Returns: non-0 value if arg can't be stored on a target.
1939  */
1940 static int
1941 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1942 {
1943         MonoType *simple_type;
1944         MonoClass *klass;
1945
1946         if (target->byref) {
1947                 /* FIXME: check that the pointed to types match */
1948                 if (arg->type == STACK_MP)
1949                         return arg->klass != mono_class_from_mono_type (target);
1950                 if (arg->type == STACK_PTR)
1951                         return 0;
1952                 return 1;
1953         }
1954
1955         simple_type = mono_type_get_underlying_type (target);
1956         switch (simple_type->type) {
1957         case MONO_TYPE_VOID:
1958                 return 1;
1959         case MONO_TYPE_I1:
1960         case MONO_TYPE_U1:
1961         case MONO_TYPE_BOOLEAN:
1962         case MONO_TYPE_I2:
1963         case MONO_TYPE_U2:
1964         case MONO_TYPE_CHAR:
1965         case MONO_TYPE_I4:
1966         case MONO_TYPE_U4:
1967                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1968                         return 1;
1969                 return 0;
1970         case MONO_TYPE_PTR:
1971                 /* STACK_MP is needed when setting pinned locals */
1972                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1973                         return 1;
1974                 return 0;
1975         case MONO_TYPE_I:
1976         case MONO_TYPE_U:
1977         case MONO_TYPE_FNPTR:
1978                 /*
1979                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1980                  * in native int. (#688008).
1981                  */
1982                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1983                         return 1;
1984                 return 0;
1985         case MONO_TYPE_CLASS:
1986         case MONO_TYPE_STRING:
1987         case MONO_TYPE_OBJECT:
1988         case MONO_TYPE_SZARRAY:
1989         case MONO_TYPE_ARRAY:
1990                 if (arg->type != STACK_OBJ)
1991                         return 1;
1992                 /* FIXME: check type compatibility */
1993                 return 0;
1994         case MONO_TYPE_I8:
1995         case MONO_TYPE_U8:
1996                 if (arg->type != STACK_I8)
1997                         return 1;
1998                 return 0;
1999         case MONO_TYPE_R4:
2000         case MONO_TYPE_R8:
2001                 if (arg->type != STACK_R8)
2002                         return 1;
2003                 return 0;
2004         case MONO_TYPE_VALUETYPE:
2005                 if (arg->type != STACK_VTYPE)
2006                         return 1;
2007                 klass = mono_class_from_mono_type (simple_type);
2008                 if (klass != arg->klass)
2009                         return 1;
2010                 return 0;
2011         case MONO_TYPE_TYPEDBYREF:
2012                 if (arg->type != STACK_VTYPE)
2013                         return 1;
2014                 klass = mono_class_from_mono_type (simple_type);
2015                 if (klass != arg->klass)
2016                         return 1;
2017                 return 0;
2018         case MONO_TYPE_GENERICINST:
2019                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2020                         if (arg->type != STACK_VTYPE)
2021                                 return 1;
2022                         klass = mono_class_from_mono_type (simple_type);
2023                         if (klass != arg->klass)
2024                                 return 1;
2025                         return 0;
2026                 } else {
2027                         if (arg->type != STACK_OBJ)
2028                                 return 1;
2029                         /* FIXME: check type compatibility */
2030                         return 0;
2031                 }
2032         case MONO_TYPE_VAR:
2033         case MONO_TYPE_MVAR:
2034                 g_assert (cfg->generic_sharing_context);
2035                 if (mini_type_var_is_vt (cfg, simple_type)) {
2036                         if (arg->type != STACK_VTYPE)
2037                                 return 1;
2038                 } else {
2039                         if (arg->type != STACK_OBJ)
2040                                 return 1;
2041                 }
2042                 return 0;
2043         default:
2044                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2045         }
2046         return 1;
2047 }
2048
2049 /*
2050  * Prepare arguments for passing to a function call.
2051  * Return a non-zero value if the arguments can't be passed to the given
2052  * signature.
2053  * The type checks are not yet complete and some conversions may need
2054  * casts on 32 or 64 bit architectures.
2055  *
2056  * FIXME: implement this using target_type_is_incompatible ()
2057  */
2058 static int
2059 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2060 {
2061         MonoType *simple_type;
2062         int i;
2063
2064         if (sig->hasthis) {
2065                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2066                         return 1;
2067                 args++;
2068         }
2069         for (i = 0; i < sig->param_count; ++i) {
2070                 if (sig->params [i]->byref) {
2071                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2072                                 return 1;
2073                         continue;
2074                 }
2075                 simple_type = sig->params [i];
2076                 simple_type = mini_get_basic_type_from_generic (cfg->generic_sharing_context, simple_type);
2077 handle_enum:
2078                 switch (simple_type->type) {
2079                 case MONO_TYPE_VOID:
2080                         return 1;
2081                         continue;
2082                 case MONO_TYPE_I1:
2083                 case MONO_TYPE_U1:
2084                 case MONO_TYPE_BOOLEAN:
2085                 case MONO_TYPE_I2:
2086                 case MONO_TYPE_U2:
2087                 case MONO_TYPE_CHAR:
2088                 case MONO_TYPE_I4:
2089                 case MONO_TYPE_U4:
2090                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2091                                 return 1;
2092                         continue;
2093                 case MONO_TYPE_I:
2094                 case MONO_TYPE_U:
2095                 case MONO_TYPE_PTR:
2096                 case MONO_TYPE_FNPTR:
2097                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2098                                 return 1;
2099                         continue;
2100                 case MONO_TYPE_CLASS:
2101                 case MONO_TYPE_STRING:
2102                 case MONO_TYPE_OBJECT:
2103                 case MONO_TYPE_SZARRAY:
2104                 case MONO_TYPE_ARRAY:
2105                         if (args [i]->type != STACK_OBJ)
2106                                 return 1;
2107                         continue;
2108                 case MONO_TYPE_I8:
2109                 case MONO_TYPE_U8:
2110                         if (args [i]->type != STACK_I8)
2111                                 return 1;
2112                         continue;
2113                 case MONO_TYPE_R4:
2114                 case MONO_TYPE_R8:
2115                         if (args [i]->type != STACK_R8)
2116                                 return 1;
2117                         continue;
2118                 case MONO_TYPE_VALUETYPE:
2119                         if (simple_type->data.klass->enumtype) {
2120                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2121                                 goto handle_enum;
2122                         }
2123                         if (args [i]->type != STACK_VTYPE)
2124                                 return 1;
2125                         continue;
2126                 case MONO_TYPE_TYPEDBYREF:
2127                         if (args [i]->type != STACK_VTYPE)
2128                                 return 1;
2129                         continue;
2130                 case MONO_TYPE_GENERICINST:
2131                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2132                         goto handle_enum;
2133                 case MONO_TYPE_VAR:
2134                 case MONO_TYPE_MVAR:
2135                         /* gsharedvt */
2136                         if (args [i]->type != STACK_VTYPE)
2137                                 return 1;
2138                         continue;
2139                 default:
2140                         g_error ("unknown type 0x%02x in check_call_signature",
2141                                  simple_type->type);
2142                 }
2143         }
2144         return 0;
2145 }
2146
2147 static int
2148 callvirt_to_call (int opcode)
2149 {
2150         switch (opcode) {
2151         case OP_CALLVIRT:
2152                 return OP_CALL;
2153         case OP_VOIDCALLVIRT:
2154                 return OP_VOIDCALL;
2155         case OP_FCALLVIRT:
2156                 return OP_FCALL;
2157         case OP_VCALLVIRT:
2158                 return OP_VCALL;
2159         case OP_LCALLVIRT:
2160                 return OP_LCALL;
2161         default:
2162                 g_assert_not_reached ();
2163         }
2164
2165         return -1;
2166 }
2167
2168 static int
2169 callvirt_to_call_membase (int opcode)
2170 {
2171         switch (opcode) {
2172         case OP_CALLVIRT:
2173                 return OP_CALL_MEMBASE;
2174         case OP_VOIDCALLVIRT:
2175                 return OP_VOIDCALL_MEMBASE;
2176         case OP_FCALLVIRT:
2177                 return OP_FCALL_MEMBASE;
2178         case OP_LCALLVIRT:
2179                 return OP_LCALL_MEMBASE;
2180         case OP_VCALLVIRT:
2181                 return OP_VCALL_MEMBASE;
2182         default:
2183                 g_assert_not_reached ();
2184         }
2185
2186         return -1;
2187 }
2188
2189 #ifdef MONO_ARCH_HAVE_IMT
2190 /* Either METHOD or IMT_ARG needs to be set */
2191 static void
2192 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2193 {
2194         int method_reg;
2195
2196         if (COMPILE_LLVM (cfg)) {
2197                 method_reg = alloc_preg (cfg);
2198
2199                 if (imt_arg) {
2200                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2201                 } else if (cfg->compile_aot) {
2202                         MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2203                 } else {
2204                         MonoInst *ins;
2205                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2206                         ins->inst_p0 = method;
2207                         ins->dreg = method_reg;
2208                         MONO_ADD_INS (cfg->cbb, ins);
2209                 }
2210
2211 #ifdef ENABLE_LLVM
2212                 call->imt_arg_reg = method_reg;
2213 #endif
2214 #ifdef MONO_ARCH_IMT_REG
2215         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2216 #else
2217         /* Need this to keep the IMT arg alive */
2218         mono_call_inst_add_outarg_reg (cfg, call, method_reg, 0, FALSE);
2219 #endif
2220                 return;
2221         }
2222
2223 #ifdef MONO_ARCH_IMT_REG
2224         method_reg = alloc_preg (cfg);
2225
2226         if (imt_arg) {
2227                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2228         } else if (cfg->compile_aot) {
2229                 MONO_EMIT_NEW_AOTCONST (cfg, method_reg, method, MONO_PATCH_INFO_METHODCONST);
2230         } else {
2231                 MonoInst *ins;
2232                 MONO_INST_NEW (cfg, ins, OP_PCONST);
2233                 ins->inst_p0 = method;
2234                 ins->dreg = method_reg;
2235                 MONO_ADD_INS (cfg->cbb, ins);
2236         }
2237
2238         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2239 #else
2240         mono_arch_emit_imt_argument (cfg, call, imt_arg);
2241 #endif
2242 }
2243 #endif
2244
2245 static MonoJumpInfo *
2246 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2247 {
2248         MonoJumpInfo *ji = mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2249
2250         ji->ip.i = ip;
2251         ji->type = type;
2252         ji->data.target = target;
2253
2254         return ji;
2255 }
2256
2257 static int
2258 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2259 {
2260         if (cfg->generic_sharing_context)
2261                 return mono_class_check_context_used (klass);
2262         else
2263                 return 0;
2264 }
2265
2266 static int
2267 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2268 {
2269         if (cfg->generic_sharing_context)
2270                 return mono_method_check_context_used (method);
2271         else
2272                 return 0;
2273 }
2274
2275 /*
2276  * check_method_sharing:
2277  *
2278  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2279  */
2280 static void
2281 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2282 {
2283         gboolean pass_vtable = FALSE;
2284         gboolean pass_mrgctx = FALSE;
2285
2286         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2287                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2288                 gboolean sharable = FALSE;
2289
2290                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2291                         sharable = TRUE;
2292                 } else {
2293                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2294                         MonoGenericContext *context = mini_class_get_context (cmethod->klass);
2295                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2296
2297                         sharable = sharing_enabled && context_sharable;
2298                 }
2299
2300                 /*
2301                  * Pass vtable iff target method might
2302                  * be shared, which means that sharing
2303                  * is enabled for its class and its
2304                  * context is sharable (and it's not a
2305                  * generic method).
2306                  */
2307                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2308                         pass_vtable = TRUE;
2309         }
2310
2311         if (mini_method_get_context (cmethod) &&
2312                 mini_method_get_context (cmethod)->method_inst) {
2313                 g_assert (!pass_vtable);
2314
2315                 if (mono_method_is_generic_sharable (cmethod, TRUE)) {
2316                         pass_mrgctx = TRUE;
2317                 } else {
2318                         gboolean sharing_enabled = mono_class_generic_sharing_enabled (cmethod->klass);
2319                         MonoGenericContext *context = mini_method_get_context (cmethod);
2320                         gboolean context_sharable = mono_generic_context_is_sharable (context, TRUE);
2321
2322                         if (sharing_enabled && context_sharable)
2323                                 pass_mrgctx = TRUE;
2324                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, mono_method_signature (cmethod)))
2325                                 pass_mrgctx = TRUE;
2326                 }
2327         }
2328
2329         if (out_pass_vtable)
2330                 *out_pass_vtable = pass_vtable;
2331         if (out_pass_mrgctx)
2332                 *out_pass_mrgctx = pass_mrgctx;
2333 }
2334
2335 inline static MonoCallInst *
2336 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2337                                          MonoInst **args, int calli, int virtual, int tail, int rgctx, int unbox_trampoline)
2338 {
2339         MonoCallInst *call;
2340 #ifdef MONO_ARCH_SOFT_FLOAT
2341         int i;
2342 #endif
2343
2344         if (tail)
2345                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2346         else
2347                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (sig->ret, calli, virtual, cfg->generic_sharing_context));
2348
2349         call->args = args;
2350         call->signature = sig;
2351         call->rgctx_reg = rgctx;
2352
2353         type_to_eval_stack_type ((cfg), sig->ret, &call->inst);
2354
2355         if (tail) {
2356                 if (mini_type_is_vtype (cfg, sig->ret)) {
2357                         call->vret_var = cfg->vret_addr;
2358                         //g_assert_not_reached ();
2359                 }
2360         } else if (mini_type_is_vtype (cfg, sig->ret)) {
2361                 MonoInst *temp = mono_compile_create_var (cfg, sig->ret, OP_LOCAL);
2362                 MonoInst *loada;
2363
2364                 temp->backend.is_pinvoke = sig->pinvoke;
2365
2366                 /*
2367                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2368                  * address of return value to increase optimization opportunities.
2369                  * Before vtype decomposition, the dreg of the call ins itself represents the
2370                  * fact the call modifies the return value. After decomposition, the call will
2371                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2372                  * will be transformed into an LDADDR.
2373                  */
2374                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2375                 loada->dreg = alloc_preg (cfg);
2376                 loada->inst_p0 = temp;
2377                 /* We reference the call too since call->dreg could change during optimization */
2378                 loada->inst_p1 = call;
2379                 MONO_ADD_INS (cfg->cbb, loada);
2380
2381                 call->inst.dreg = temp->dreg;
2382
2383                 call->vret_var = loada;
2384         } else if (!MONO_TYPE_IS_VOID (sig->ret))
2385                 call->inst.dreg = alloc_dreg (cfg, call->inst.type);
2386
2387 #ifdef MONO_ARCH_SOFT_FLOAT
2388         if (COMPILE_SOFT_FLOAT (cfg)) {
2389                 /*
2390                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2391                  * an icall, but that cannot be done during the call sequence since it would clobber
2392                  * the call registers + the stack. So we do it before emitting the call.
2393                  */
2394                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2395                         MonoType *t;
2396                         MonoInst *in = call->args [i];
2397
2398                         if (i >= sig->hasthis)
2399                                 t = sig->params [i - sig->hasthis];
2400                         else
2401                                 t = &mono_defaults.int_class->byval_arg;
2402                         t = mono_type_get_underlying_type (t);
2403
2404                         if (!t->byref && t->type == MONO_TYPE_R4) {
2405                                 MonoInst *iargs [1];
2406                                 MonoInst *conv;
2407
2408                                 iargs [0] = in;
2409                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2410
2411                                 /* The result will be in an int vreg */
2412                                 call->args [i] = conv;
2413                         }
2414                 }
2415         }
2416 #endif
2417
2418         call->need_unbox_trampoline = unbox_trampoline;
2419
2420 #ifdef ENABLE_LLVM
2421         if (COMPILE_LLVM (cfg))
2422                 mono_llvm_emit_call (cfg, call);
2423         else
2424                 mono_arch_emit_call (cfg, call);
2425 #else
2426         mono_arch_emit_call (cfg, call);
2427 #endif
2428
2429         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2430         cfg->flags |= MONO_CFG_HAS_CALLS;
2431
2432         return call;
2433 }
2434
2435 static void
2436 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2437 {
2438 #ifdef MONO_ARCH_RGCTX_REG
2439         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2440         cfg->uses_rgctx_reg = TRUE;
2441         call->rgctx_reg = TRUE;
2442 #ifdef ENABLE_LLVM
2443         call->rgctx_arg_reg = rgctx_reg;
2444 #endif
2445 #else
2446         NOT_IMPLEMENTED;
2447 #endif
2448 }
2449
2450 inline static MonoInst*
2451 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2452 {
2453         MonoCallInst *call;
2454         int rgctx_reg = -1;
2455
2456         if (rgctx_arg) {
2457                 rgctx_reg = mono_alloc_preg (cfg);
2458                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2459         }
2460
2461         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2462
2463         call->inst.sreg1 = addr->dreg;
2464
2465         if (imt_arg)
2466                 emit_imt_argument (cfg, call, NULL, imt_arg);
2467
2468         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2469
2470         if (rgctx_arg)
2471                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2472
2473         return (MonoInst*)call;
2474 }
2475
2476 static MonoInst*
2477 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2478
2479 static MonoInst*
2480 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2481 static MonoInst*
2482 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2483
2484 static MonoInst*
2485 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2486                                                         MonoInst **args, MonoInst *this, MonoInst *imt_arg, MonoInst *rgctx_arg)
2487 {
2488 #ifndef DISABLE_REMOTING
2489         gboolean might_be_remote = FALSE;
2490 #endif
2491         gboolean virtual = this != NULL;
2492         gboolean enable_for_aot = TRUE;
2493         int context_used;
2494         MonoCallInst *call;
2495         int rgctx_reg = 0;
2496         gboolean need_unbox_trampoline;
2497
2498         if (!sig)
2499                 sig = mono_method_signature (method);
2500
2501         if (rgctx_arg) {
2502                 rgctx_reg = mono_alloc_preg (cfg);
2503                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2504         }
2505
2506         if (method->string_ctor) {
2507                 /* Create the real signature */
2508                 /* FIXME: Cache these */
2509                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2510                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2511
2512                 sig = ctor_sig;
2513         }
2514
2515         context_used = mini_method_check_context_used (cfg, method);
2516
2517 #ifndef DISABLE_REMOTING
2518         might_be_remote = this && sig->hasthis &&
2519                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2520                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this) || context_used);
2521
2522         if (might_be_remote && context_used) {
2523                 MonoInst *addr;
2524
2525                 g_assert (cfg->generic_sharing_context);
2526
2527                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2528
2529                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2530         }
2531 #endif
2532
2533         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2534
2535         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2536
2537 #ifndef DISABLE_REMOTING
2538         if (might_be_remote)
2539                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2540         else
2541 #endif
2542                 call->method = method;
2543         call->inst.flags |= MONO_INST_HAS_METHOD;
2544         call->inst.inst_left = this;
2545         call->tail_call = tail;
2546
2547         if (virtual) {
2548                 int vtable_reg, slot_reg, this_reg;
2549                 int offset;
2550
2551                 this_reg = this->dreg;
2552
2553                 if (ARCH_HAVE_DELEGATE_TRAMPOLINES && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2554                         MonoInst *dummy_use;
2555
2556                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2557
2558                         /* Make a call to delegate->invoke_impl */
2559                         call->inst.opcode = callvirt_to_call_membase (call->inst.opcode);
2560                         call->inst.inst_basereg = this_reg;
2561                         call->inst.inst_offset = G_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2562                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2563
2564                         /* We must emit a dummy use here because the delegate trampoline will
2565                         replace the 'this' argument with the delegate target making this activation
2566                         no longer a root for the delegate.
2567                         This is an issue for delegates that target collectible code such as dynamic
2568                         methods of GC'able assemblies.
2569
2570                         For a test case look into #667921.
2571
2572                         FIXME: a dummy use is not the best way to do it as the local register allocator
2573                         will put it on a caller save register and spil it around the call.
2574                         Ideally, we would either put it on a callee save register or only do the store part.
2575                          */
2576                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2577
2578                         return (MonoInst*)call;
2579                 }
2580
2581                 if ((!cfg->compile_aot || enable_for_aot) &&
2582                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2583                          (MONO_METHOD_IS_FINAL (method) &&
2584                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2585                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2586                         /*
2587                          * the method is not virtual, we just need to ensure this is not null
2588                          * and then we can call the method directly.
2589                          */
2590 #ifndef DISABLE_REMOTING
2591                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2592                                 /*
2593                                  * The check above ensures method is not gshared, this is needed since
2594                                  * gshared methods can't have wrappers.
2595                                  */
2596                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2597                         }
2598 #endif
2599
2600                         if (!method->string_ctor)
2601                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2602
2603                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2604                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2605                         /*
2606                          * the method is virtual, but we can statically dispatch since either
2607                          * it's class or the method itself are sealed.
2608                          * But first we need to ensure it's not a null reference.
2609                          */
2610                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2611
2612                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2613                 } else {
2614                         call->inst.opcode = callvirt_to_call_membase (call->inst.opcode);
2615
2616                         vtable_reg = alloc_preg (cfg);
2617                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2618                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2619                                 slot_reg = -1;
2620 #ifdef MONO_ARCH_HAVE_IMT
2621                                 if (mono_use_imt) {
2622                                         guint32 imt_slot = mono_method_get_imt_slot (method);
2623                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2624                                         slot_reg = vtable_reg;
2625                                         offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2626                                 }
2627 #endif
2628                                 if (slot_reg == -1) {
2629                                         slot_reg = alloc_preg (cfg);
2630                                         mini_emit_load_intf_reg_vtable (cfg, slot_reg, vtable_reg, method->klass);
2631                                         offset = mono_method_get_vtable_index (method) * SIZEOF_VOID_P;
2632                                 }
2633                         } else {
2634                                 slot_reg = vtable_reg;
2635                                 offset = G_STRUCT_OFFSET (MonoVTable, vtable) +
2636                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2637 #ifdef MONO_ARCH_HAVE_IMT
2638                                 if (imt_arg) {
2639                                         g_assert (mono_method_signature (method)->generic_param_count);
2640                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2641                                 }
2642 #endif
2643                         }
2644
2645                         call->inst.sreg1 = slot_reg;
2646                         call->inst.inst_offset = offset;
2647                         call->virtual = TRUE;
2648                 }
2649         }
2650
2651         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2652
2653         if (rgctx_arg)
2654                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2655
2656         return (MonoInst*)call;
2657 }
2658
2659 MonoInst*
2660 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this)
2661 {
2662         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this, NULL, NULL);
2663 }
2664
2665 MonoInst*
2666 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2667                                            MonoInst **args)
2668 {
2669         MonoCallInst *call;
2670
2671         g_assert (sig);
2672
2673         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2674         call->fptr = func;
2675
2676         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2677
2678         return (MonoInst*)call;
2679 }
2680
2681 MonoInst*
2682 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2683 {
2684         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2685
2686         g_assert (info);
2687
2688         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2689 }
2690
2691 /*
2692  * mono_emit_abs_call:
2693  *
2694  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2695  */
2696 inline static MonoInst*
2697 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2698                                         MonoMethodSignature *sig, MonoInst **args)
2699 {
2700         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2701         MonoInst *ins;
2702
2703         /*
2704          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2705          * handle it.
2706          */
2707         if (cfg->abs_patches == NULL)
2708                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2709         g_hash_table_insert (cfg->abs_patches, ji, ji);
2710         ins = mono_emit_native_call (cfg, ji, sig, args);
2711         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2712         return ins;
2713 }
2714
2715 static MonoInst*
2716 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2717 {
2718         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2719                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2720                         int widen_op = -1;
2721
2722                         /*
2723                          * Native code might return non register sized integers
2724                          * without initializing the upper bits.
2725                          */
2726                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2727                         case OP_LOADI1_MEMBASE:
2728                                 widen_op = OP_ICONV_TO_I1;
2729                                 break;
2730                         case OP_LOADU1_MEMBASE:
2731                                 widen_op = OP_ICONV_TO_U1;
2732                                 break;
2733                         case OP_LOADI2_MEMBASE:
2734                                 widen_op = OP_ICONV_TO_I2;
2735                                 break;
2736                         case OP_LOADU2_MEMBASE:
2737                                 widen_op = OP_ICONV_TO_U2;
2738                                 break;
2739                         default:
2740                                 break;
2741                         }
2742
2743                         if (widen_op != -1) {
2744                                 int dreg = alloc_preg (cfg);
2745                                 MonoInst *widen;
2746
2747                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2748                                 widen->type = ins->type;
2749                                 ins = widen;
2750                         }
2751                 }
2752         }
2753
2754         return ins;
2755 }
2756
2757 static MonoMethod*
2758 get_memcpy_method (void)
2759 {
2760         static MonoMethod *memcpy_method = NULL;
2761         if (!memcpy_method) {
2762                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2763                 if (!memcpy_method)
2764                         g_error ("Old corlib found. Install a new one");
2765         }
2766         return memcpy_method;
2767 }
2768
2769 static void
2770 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2771 {
2772         MonoClassField *field;
2773         gpointer iter = NULL;
2774
2775         while ((field = mono_class_get_fields (klass, &iter))) {
2776                 int foffset;
2777
2778                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2779                         continue;
2780                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2781                 if (mini_type_is_reference (cfg, mono_field_get_type (field))) {
2782                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2783                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2784                 } else {
2785                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2786                         if (field_class->has_references)
2787                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2788                 }
2789         }
2790 }
2791
2792 static void
2793 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value, int value_reg)
2794 {
2795         int card_table_shift_bits;
2796         gpointer card_table_mask;
2797         guint8 *card_table;
2798         MonoInst *dummy_use;
2799         int nursery_shift_bits;
2800         size_t nursery_size;
2801         gboolean has_card_table_wb = FALSE;
2802
2803         if (!cfg->gen_write_barriers)
2804                 return;
2805
2806         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2807
2808         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2809
2810 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
2811         has_card_table_wb = TRUE;
2812 #endif
2813
2814         if (has_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0) {
2815                 MonoInst *wbarrier;
2816
2817                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2818                 wbarrier->sreg1 = ptr->dreg;
2819                 if (value)
2820                         wbarrier->sreg2 = value->dreg;
2821                 else
2822                         wbarrier->sreg2 = value_reg;
2823                 MONO_ADD_INS (cfg->cbb, wbarrier);
2824         } else if (card_table) {
2825                 int offset_reg = alloc_preg (cfg);
2826                 int card_reg  = alloc_preg (cfg);
2827                 MonoInst *ins;
2828
2829                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2830                 if (card_table_mask)
2831                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2832
2833                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2834                  * IMM's larger than 32bits.
2835                  */
2836                 if (cfg->compile_aot) {
2837                         MONO_EMIT_NEW_AOTCONST (cfg, card_reg, NULL, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR);
2838                 } else {
2839                         MONO_INST_NEW (cfg, ins, OP_PCONST);
2840                         ins->inst_p0 = card_table;
2841                         ins->dreg = card_reg;
2842                         MONO_ADD_INS (cfg->cbb, ins);
2843                 }
2844
2845                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2846                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2847         } else {
2848                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2849                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2850         }
2851
2852         if (value) {
2853                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2854         } else {
2855                 MONO_INST_NEW (cfg, dummy_use, OP_DUMMY_USE);
2856                 dummy_use->sreg1 = value_reg;
2857                 MONO_ADD_INS (cfg->cbb, dummy_use);
2858         }
2859 }
2860
2861 static gboolean
2862 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
2863 {
2864         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
2865         unsigned need_wb = 0;
2866
2867         if (align == 0)
2868                 align = 4;
2869
2870         /*types with references can't have alignment smaller than sizeof(void*) */
2871         if (align < SIZEOF_VOID_P)
2872                 return FALSE;
2873
2874         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
2875         if (size > 32 * SIZEOF_VOID_P)
2876                 return FALSE;
2877
2878         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
2879
2880         /* We don't unroll more than 5 stores to avoid code bloat. */
2881         if (size > 5 * SIZEOF_VOID_P) {
2882                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
2883                 size += (SIZEOF_VOID_P - 1);
2884                 size &= ~(SIZEOF_VOID_P - 1);
2885
2886                 EMIT_NEW_ICONST (cfg, iargs [2], size);
2887                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
2888                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
2889                 return TRUE;
2890         }
2891
2892         destreg = iargs [0]->dreg;
2893         srcreg = iargs [1]->dreg;
2894         offset = 0;
2895
2896         dest_ptr_reg = alloc_preg (cfg);
2897         tmp_reg = alloc_preg (cfg);
2898
2899         /*tmp = dreg*/
2900         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
2901
2902         while (size >= SIZEOF_VOID_P) {
2903                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOAD_MEMBASE, tmp_reg, srcreg, offset);
2904                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
2905
2906                 if (need_wb & 0x1)
2907                         emit_write_barrier (cfg, iargs [0], NULL, tmp_reg);
2908
2909                 offset += SIZEOF_VOID_P;
2910                 size -= SIZEOF_VOID_P;
2911                 need_wb >>= 1;
2912
2913                 /*tmp += sizeof (void*)*/
2914                 if (size >= SIZEOF_VOID_P) {
2915                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
2916                         MONO_ADD_INS (cfg->cbb, iargs [0]);
2917                 }
2918         }
2919
2920         /* Those cannot be references since size < sizeof (void*) */
2921         while (size >= 4) {
2922                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
2923                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
2924                 offset += 4;
2925                 size -= 4;
2926         }
2927
2928         while (size >= 2) {
2929                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
2930                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
2931                 offset += 2;
2932                 size -= 2;
2933         }
2934
2935         while (size >= 1) {
2936                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
2937                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
2938                 offset += 1;
2939                 size -= 1;
2940         }
2941
2942         return TRUE;
2943 }
2944
2945 /*
2946  * Emit code to copy a valuetype of type @klass whose address is stored in
2947  * @src->dreg to memory whose address is stored at @dest->dreg.
2948  */
2949 void
2950 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2951 {
2952         MonoInst *iargs [4];
2953         int context_used, n;
2954         guint32 align = 0;
2955         MonoMethod *memcpy_method;
2956         MonoInst *size_ins = NULL;
2957         MonoInst *memcpy_ins = NULL;
2958
2959         g_assert (klass);
2960         /*
2961          * This check breaks with spilled vars... need to handle it during verification anyway.
2962          * g_assert (klass && klass == src->klass && klass == dest->klass);
2963          */
2964
2965         if (mini_is_gsharedvt_klass (cfg, klass)) {
2966                 g_assert (!native);
2967                 context_used = mini_class_check_context_used (cfg, klass);
2968                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2969                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
2970         }
2971
2972         if (native)
2973                 n = mono_class_native_size (klass, &align);
2974         else
2975                 n = mono_class_value_size (klass, &align);
2976
2977         /* if native is true there should be no references in the struct */
2978         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
2979                 /* Avoid barriers when storing to the stack */
2980                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
2981                           (dest->opcode == OP_LDADDR))) {
2982                         int context_used;
2983
2984                         iargs [0] = dest;
2985                         iargs [1] = src;
2986
2987                         context_used = mini_class_check_context_used (cfg, klass);
2988
2989                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
2990                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
2991                                 return;
2992                         } else if (context_used) {
2993                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
2994                         }  else {
2995                                 if (cfg->compile_aot) {
2996                                         EMIT_NEW_CLASSCONST (cfg, iargs [2], klass);
2997                                 } else {
2998                                         EMIT_NEW_PCONST (cfg, iargs [2], klass);
2999                                         mono_class_compute_gc_descriptor (klass);
3000                                 }
3001                         }
3002
3003                         if (size_ins)
3004                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3005                         else
3006                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3007                         return;
3008                 }
3009         }
3010
3011         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 5) {
3012                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3013                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3014         } else {
3015                 iargs [0] = dest;
3016                 iargs [1] = src;
3017                 if (size_ins)
3018                         iargs [2] = size_ins;
3019                 else
3020                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3021
3022                 memcpy_method = get_memcpy_method ();
3023                 if (memcpy_ins)
3024                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3025                 else
3026                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3027         }
3028 }
3029
3030 static MonoMethod*
3031 get_memset_method (void)
3032 {
3033         static MonoMethod *memset_method = NULL;
3034         if (!memset_method) {
3035                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3036                 if (!memset_method)
3037                         g_error ("Old corlib found. Install a new one");
3038         }
3039         return memset_method;
3040 }
3041
3042 void
3043 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3044 {
3045         MonoInst *iargs [3];
3046         int n, context_used;
3047         guint32 align;
3048         MonoMethod *memset_method;
3049         MonoInst *size_ins = NULL;
3050         MonoInst *bzero_ins = NULL;
3051         static MonoMethod *bzero_method;
3052
3053         /* FIXME: Optimize this for the case when dest is an LDADDR */
3054
3055         mono_class_init (klass);
3056         if (mini_is_gsharedvt_klass (cfg, klass)) {
3057                 context_used = mini_class_check_context_used (cfg, klass);
3058                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3059                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3060                 if (!bzero_method)
3061                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3062                 g_assert (bzero_method);
3063                 iargs [0] = dest;
3064                 iargs [1] = size_ins;
3065                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3066                 return;
3067         }
3068
3069         n = mono_class_value_size (klass, &align);
3070
3071         if (n <= sizeof (gpointer) * 5) {
3072                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3073         }
3074         else {
3075                 memset_method = get_memset_method ();
3076                 iargs [0] = dest;
3077                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3078                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3079                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3080         }
3081 }
3082
3083 static MonoInst*
3084 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3085 {
3086         MonoInst *this = NULL;
3087
3088         g_assert (cfg->generic_sharing_context);
3089
3090         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3091                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3092                         !method->klass->valuetype)
3093                 EMIT_NEW_ARGLOAD (cfg, this, 0);
3094
3095         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3096                 MonoInst *mrgctx_loc, *mrgctx_var;
3097
3098                 g_assert (!this);
3099                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3100
3101                 mrgctx_loc = mono_get_vtable_var (cfg);
3102                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3103
3104                 return mrgctx_var;
3105         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3106                 MonoInst *vtable_loc, *vtable_var;
3107
3108                 g_assert (!this);
3109
3110                 vtable_loc = mono_get_vtable_var (cfg);
3111                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3112
3113                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3114                         MonoInst *mrgctx_var = vtable_var;
3115                         int vtable_reg;
3116
3117                         vtable_reg = alloc_preg (cfg);
3118                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, G_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3119                         vtable_var->type = STACK_PTR;
3120                 }
3121
3122                 return vtable_var;
3123         } else {
3124                 MonoInst *ins;
3125                 int vtable_reg;
3126
3127                 vtable_reg = alloc_preg (cfg);
3128                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3129                 return ins;
3130         }
3131 }
3132
3133 static MonoJumpInfoRgctxEntry *
3134 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3135 {
3136         MonoJumpInfoRgctxEntry *res = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3137         res->method = method;
3138         res->in_mrgctx = in_mrgctx;
3139         res->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3140         res->data->type = patch_type;
3141         res->data->data.target = patch_data;
3142         res->info_type = info_type;
3143
3144         return res;
3145 }
3146
3147 static inline MonoInst*
3148 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3149 {
3150         return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3151 }
3152
3153 static MonoInst*
3154 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3155                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3156 {
3157         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);
3158         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3159
3160         return emit_rgctx_fetch (cfg, rgctx, entry);
3161 }
3162
3163 static MonoInst*
3164 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3165                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3166 {
3167         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);
3168         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3169
3170         return emit_rgctx_fetch (cfg, rgctx, entry);
3171 }
3172
3173 static MonoInst*
3174 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3175                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3176 {
3177         MonoJumpInfoGSharedVtCall *call_info;
3178         MonoJumpInfoRgctxEntry *entry;
3179         MonoInst *rgctx;
3180
3181         call_info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3182         call_info->sig = sig;
3183         call_info->method = cmethod;
3184
3185         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);
3186         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3187
3188         return emit_rgctx_fetch (cfg, rgctx, entry);
3189 }
3190
3191
3192 static MonoInst*
3193 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3194                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3195 {
3196         MonoJumpInfoRgctxEntry *entry;
3197         MonoInst *rgctx;
3198
3199         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3200         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3201
3202         return emit_rgctx_fetch (cfg, rgctx, entry);
3203 }
3204
3205 /*
3206  * emit_get_rgctx_method:
3207  *
3208  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3209  * normal constants, else emit a load from the rgctx.
3210  */
3211 static MonoInst*
3212 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3213                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3214 {
3215         if (!context_used) {
3216                 MonoInst *ins;
3217
3218                 switch (rgctx_type) {
3219                 case MONO_RGCTX_INFO_METHOD:
3220                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3221                         return ins;
3222                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3223                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3224                         return ins;
3225                 default:
3226                         g_assert_not_reached ();
3227                 }
3228         } else {
3229                 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);
3230                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3231
3232                 return emit_rgctx_fetch (cfg, rgctx, entry);
3233         }
3234 }
3235
3236 static MonoInst*
3237 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3238                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3239 {
3240         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);
3241         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3242
3243         return emit_rgctx_fetch (cfg, rgctx, entry);
3244 }
3245
3246 static int
3247 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3248 {
3249         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3250         MonoRuntimeGenericContextInfoTemplate *template;
3251         int i, idx;
3252
3253         g_assert (info);
3254
3255         for (i = 0; i < info->entries->len; ++i) {
3256                 MonoRuntimeGenericContextInfoTemplate *otemplate = g_ptr_array_index (info->entries, i);
3257
3258                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3259                         return i;
3260         }
3261
3262         template = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate));
3263         template->info_type = rgctx_type;
3264         template->data = data;
3265
3266         idx = info->entries->len;
3267
3268         g_ptr_array_add (info->entries, template);
3269
3270         return idx;
3271 }
3272
3273 /*
3274  * emit_get_gsharedvt_info:
3275  *
3276  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3277  */
3278 static MonoInst*
3279 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3280 {
3281         MonoInst *ins;
3282         int idx, dreg;
3283
3284         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3285         /* Load info->entries [idx] */
3286         dreg = alloc_preg (cfg);
3287         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, G_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3288
3289         return ins;
3290 }
3291
3292 static MonoInst*
3293 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3294 {
3295         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3296 }
3297
3298 /*
3299  * On return the caller must check @klass for load errors.
3300  */
3301 static void
3302 emit_generic_class_init (MonoCompile *cfg, MonoClass *klass)
3303 {
3304         MonoInst *vtable_arg;
3305         MonoCallInst *call;
3306         int context_used;
3307
3308         context_used = mini_class_check_context_used (cfg, klass);
3309
3310         if (context_used) {
3311                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3312                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3313         } else {
3314                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3315
3316                 if (!vtable)
3317                         return;
3318                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3319         }
3320
3321         if (COMPILE_LLVM (cfg))
3322                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline_llvm, &vtable_arg);
3323         else
3324                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
3325 #ifdef MONO_ARCH_VTABLE_REG
3326         mono_call_inst_add_outarg_reg (cfg, call, vtable_arg->dreg, MONO_ARCH_VTABLE_REG, FALSE);
3327         cfg->uses_vtable_reg = TRUE;
3328 #else
3329         NOT_IMPLEMENTED;
3330 #endif
3331 }
3332
3333 static void
3334 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc)
3335 {
3336         MonoInst *ins;
3337
3338         if (cfg->gen_seq_points && cfg->method == method) {
3339                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3340                 MONO_ADD_INS (cfg->cbb, ins);
3341         }
3342 }
3343
3344 static void
3345 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg)
3346 {
3347         if (mini_get_debug_options ()->better_cast_details) {
3348                 int to_klass_reg = alloc_preg (cfg);
3349                 int vtable_reg = alloc_preg (cfg);
3350                 int klass_reg = alloc_preg (cfg);
3351                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3352
3353                 if (!tls_get) {
3354                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3355                         exit (1);
3356                 }
3357
3358                 MONO_ADD_INS (cfg->cbb, tls_get);
3359                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3360                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3361
3362                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3363                 MONO_EMIT_NEW_PCONST (cfg, to_klass_reg, klass);
3364                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3365         }
3366 }
3367
3368 static void
3369 reset_cast_details (MonoCompile *cfg)
3370 {
3371         /* Reset the variables holding the cast details */
3372         if (mini_get_debug_options ()->better_cast_details) {
3373                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3374
3375                 MONO_ADD_INS (cfg->cbb, tls_get);
3376                 /* It is enough to reset the from field */
3377                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3378         }
3379 }
3380
3381 /*
3382  * On return the caller must check @array_class for load errors
3383  */
3384 static void
3385 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3386 {
3387         int vtable_reg = alloc_preg (cfg);
3388         int context_used;
3389
3390         context_used = mini_class_check_context_used (cfg, array_class);
3391
3392         save_cast_details (cfg, array_class, obj->dreg);
3393
3394         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3395
3396         if (cfg->opt & MONO_OPT_SHARED) {
3397                 int class_reg = alloc_preg (cfg);
3398                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3399                 if (cfg->compile_aot) {
3400                         int klass_reg = alloc_preg (cfg);
3401                         MONO_EMIT_NEW_CLASSCONST (cfg, klass_reg, array_class);
3402                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, klass_reg);
3403                 } else {
3404                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, class_reg, array_class);
3405                 }
3406         } else if (context_used) {
3407                 MonoInst *vtable_ins;
3408
3409                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3410                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3411         } else {
3412                 if (cfg->compile_aot) {
3413                         int vt_reg;
3414                         MonoVTable *vtable;
3415
3416                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3417                                 return;
3418                         vt_reg = alloc_preg (cfg);
3419                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3420                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3421                 } else {
3422                         MonoVTable *vtable;
3423                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3424                                 return;
3425                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3426                 }
3427         }
3428
3429         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3430
3431         reset_cast_details (cfg);
3432 }
3433
3434 /**
3435  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3436  * generic code is generated.
3437  */
3438 static MonoInst*
3439 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3440 {
3441         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3442
3443         if (context_used) {
3444                 MonoInst *rgctx, *addr;
3445
3446                 /* FIXME: What if the class is shared?  We might not
3447                    have to get the address of the method from the
3448                    RGCTX. */
3449                 addr = emit_get_rgctx_method (cfg, context_used, method,
3450                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3451
3452                 rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3453
3454                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3455         } else {
3456                 gboolean pass_vtable, pass_mrgctx;
3457                 MonoInst *rgctx_arg = NULL;
3458
3459                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3460                 g_assert (!pass_mrgctx);
3461
3462                 if (pass_vtable) {
3463                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3464
3465                         g_assert (vtable);
3466                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3467                 }
3468
3469                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3470         }
3471 }
3472
3473 static MonoInst*
3474 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3475 {
3476         MonoInst *add;
3477         int obj_reg;
3478         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3479         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3480         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3481         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3482
3483         obj_reg = sp [0]->dreg;
3484         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3485         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3486
3487         /* FIXME: generics */
3488         g_assert (klass->rank == 0);
3489
3490         // Check rank == 0
3491         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3492         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3493
3494         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3495         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, element_class));
3496
3497         if (context_used) {
3498                 MonoInst *element_class;
3499
3500                 /* This assertion is from the unboxcast insn */
3501                 g_assert (klass->rank == 0);
3502
3503                 element_class = emit_get_rgctx_klass (cfg, context_used,
3504                                 klass->element_class, MONO_RGCTX_INFO_KLASS);
3505
3506                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3507                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3508         } else {
3509                 save_cast_details (cfg, klass->element_class, obj_reg);
3510                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3511                 reset_cast_details (cfg);
3512         }
3513
3514         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3515         MONO_ADD_INS (cfg->cbb, add);
3516         add->type = STACK_MP;
3517         add->klass = klass;
3518
3519         return add;
3520 }
3521
3522 static MonoInst*
3523 handle_unbox_gsharedvt (MonoCompile *cfg, int context_used, MonoClass *klass, MonoInst *obj, MonoBasicBlock **out_cbb)
3524 {
3525         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3526         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3527         MonoInst *ins;
3528         int dreg, addr_reg;
3529
3530         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3531
3532         /* obj */
3533         args [0] = obj;
3534
3535         /* klass */
3536         args [1] = klass_inst;
3537
3538         /* CASTCLASS */
3539         obj = mono_emit_jit_icall (cfg, mono_object_castclass, args);
3540
3541         NEW_BBLOCK (cfg, is_ref_bb);
3542         NEW_BBLOCK (cfg, is_nullable_bb);
3543         NEW_BBLOCK (cfg, end_bb);
3544         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3545         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3546         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3547
3548         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
3549         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3550
3551         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3552         addr_reg = alloc_dreg (cfg, STACK_MP);
3553
3554         /* Non-ref case */
3555         /* UNBOX */
3556         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3557         MONO_ADD_INS (cfg->cbb, addr);
3558
3559         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3560
3561         /* Ref case */
3562         MONO_START_BB (cfg, is_ref_bb);
3563
3564         /* Save the ref to a temporary */
3565         dreg = alloc_ireg (cfg);
3566         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3567         addr->dreg = addr_reg;
3568         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3569         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3570
3571         /* Nullable case */
3572         MONO_START_BB (cfg, is_nullable_bb);
3573
3574         {
3575                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3576                 MonoInst *unbox_call;
3577                 MonoMethodSignature *unbox_sig;
3578                 MonoInst *var;
3579
3580                 var = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
3581
3582                 unbox_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3583                 unbox_sig->ret = &klass->byval_arg;
3584                 unbox_sig->param_count = 1;
3585                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3586                 unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3587
3588                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3589                 addr->dreg = addr_reg;
3590         }
3591
3592         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3593
3594         /* End */
3595         MONO_START_BB (cfg, end_bb);
3596
3597         /* LDOBJ */
3598         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3599
3600         *out_cbb = cfg->cbb;
3601
3602         return ins;
3603 }
3604
3605 /*
3606  * Returns NULL and set the cfg exception on error.
3607  */
3608 static MonoInst*
3609 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3610 {
3611         MonoInst *iargs [2];
3612         void *alloc_ftn;
3613
3614         if (context_used) {
3615                 MonoInst *data;
3616                 int rgctx_info;
3617                 MonoInst *iargs [2];
3618
3619                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box);
3620
3621                 if (cfg->opt & MONO_OPT_SHARED)
3622                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3623                 else
3624                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3625                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3626
3627                 if (cfg->opt & MONO_OPT_SHARED) {
3628                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3629                         iargs [1] = data;
3630                         alloc_ftn = mono_object_new;
3631                 } else {
3632                         iargs [0] = data;
3633                         alloc_ftn = mono_object_new_specific;
3634                 }
3635
3636                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED))
3637                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3638
3639                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3640         }
3641
3642         if (cfg->opt & MONO_OPT_SHARED) {
3643                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3644                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3645
3646                 alloc_ftn = mono_object_new;
3647         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
3648                 /* This happens often in argument checking code, eg. throw new FooException... */
3649                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3650                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3651                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3652         } else {
3653                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3654                 MonoMethod *managed_alloc = NULL;
3655                 gboolean pass_lw;
3656
3657                 if (!vtable) {
3658                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3659                         cfg->exception_ptr = klass;
3660                         return NULL;
3661                 }
3662
3663 #ifndef MONO_CROSS_COMPILE
3664                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box);
3665 #endif
3666
3667                 if (managed_alloc) {
3668                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3669                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3670                 }
3671                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3672                 if (pass_lw) {
3673                         guint32 lw = vtable->klass->instance_size;
3674                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3675                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3676                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3677                 }
3678                 else {
3679                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3680                 }
3681         }
3682
3683         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3684 }
3685
3686 /*
3687  * Returns NULL and set the cfg exception on error.
3688  */
3689 static MonoInst*
3690 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used, MonoBasicBlock **out_cbb)
3691 {
3692         MonoInst *alloc, *ins;
3693
3694         *out_cbb = cfg->cbb;
3695
3696         if (mono_class_is_nullable (klass)) {
3697                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3698
3699                 if (context_used) {
3700                         /* FIXME: What if the class is shared?  We might not
3701                            have to get the method address from the RGCTX. */
3702                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3703                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3704                         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3705
3706                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3707                 } else {
3708                         gboolean pass_vtable, pass_mrgctx;
3709                         MonoInst *rgctx_arg = NULL;
3710
3711                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3712                         g_assert (!pass_mrgctx);
3713
3714                         if (pass_vtable) {
3715                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3716
3717                                 g_assert (vtable);
3718                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3719                         }
3720
3721                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3722                 }
3723         }
3724
3725         if (mini_is_gsharedvt_klass (cfg, klass)) {
3726                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3727                 MonoInst *res, *is_ref, *src_var, *addr;
3728                 int addr_reg, dreg;
3729
3730                 dreg = alloc_ireg (cfg);
3731
3732                 NEW_BBLOCK (cfg, is_ref_bb);
3733                 NEW_BBLOCK (cfg, is_nullable_bb);
3734                 NEW_BBLOCK (cfg, end_bb);
3735                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3736                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 1);
3737                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3738
3739                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, 2);
3740                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3741
3742                 /* Non-ref case */
3743                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3744                 if (!alloc)
3745                         return NULL;
3746                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3747                 ins->opcode = OP_STOREV_MEMBASE;
3748
3749                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3750                 res->type = STACK_OBJ;
3751                 res->klass = klass;
3752                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3753
3754                 /* Ref case */
3755                 MONO_START_BB (cfg, is_ref_bb);
3756                 addr_reg = alloc_ireg (cfg);
3757
3758                 /* val is a vtype, so has to load the value manually */
3759                 src_var = get_vreg_to_inst (cfg, val->dreg);
3760                 if (!src_var)
3761                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3762                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3763                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3764                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3765
3766                 /* Nullable case */
3767                 MONO_START_BB (cfg, is_nullable_bb);
3768
3769                 {
3770                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
3771                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3772                         MonoInst *box_call;
3773                         MonoMethodSignature *box_sig;
3774
3775                         /*
3776                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3777                          * construct that method at JIT time, so have to do things by hand.
3778                          */
3779                         box_sig = mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3780                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3781                         box_sig->param_count = 1;
3782                         box_sig->params [0] = &klass->byval_arg;
3783                         box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3784                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3785                         res->type = STACK_OBJ;
3786                         res->klass = klass;
3787                 }
3788
3789                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3790
3791                 MONO_START_BB (cfg, end_bb);
3792
3793                 *out_cbb = cfg->cbb;
3794
3795                 return res;
3796         } else {
3797                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3798                 if (!alloc)
3799                         return NULL;
3800
3801                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3802                 return alloc;
3803         }
3804 }
3805
3806
3807 static gboolean
3808 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
3809 {
3810         int i;
3811         MonoGenericContainer *container;
3812         MonoGenericInst *ginst;
3813
3814         if (klass->generic_class) {
3815                 container = klass->generic_class->container_class->generic_container;
3816                 ginst = klass->generic_class->context.class_inst;
3817         } else if (klass->generic_container && context_used) {
3818                 container = klass->generic_container;
3819                 ginst = container->context.class_inst;
3820         } else {
3821                 return FALSE;
3822         }
3823
3824         for (i = 0; i < container->type_argc; ++i) {
3825                 MonoType *type;
3826                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
3827                         continue;
3828                 type = ginst->type_argv [i];
3829                 if (mini_type_is_reference (cfg, type))
3830                         return TRUE;
3831         }
3832         return FALSE;
3833 }
3834
3835 // FIXME: This doesn't work yet (class libs tests fail?)
3836 #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)
3837
3838 /*
3839  * Returns NULL and set the cfg exception on error.
3840  */
3841 static MonoInst*
3842 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
3843 {
3844         MonoBasicBlock *is_null_bb;
3845         int obj_reg = src->dreg;
3846         int vtable_reg = alloc_preg (cfg);
3847         MonoInst *klass_inst = NULL;
3848
3849         if (context_used) {
3850                 MonoInst *args [3];
3851
3852                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
3853                         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
3854                         MonoInst *cache_ins;
3855
3856                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
3857
3858                         /* obj */
3859                         args [0] = src;
3860
3861                         /* klass - it's the second element of the cache entry*/
3862                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3863
3864                         /* cache */
3865                         args [2] = cache_ins;
3866
3867                         return mono_emit_method_call (cfg, mono_castclass, args, NULL);
3868                 }
3869
3870                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3871         }
3872
3873         NEW_BBLOCK (cfg, is_null_bb);
3874
3875         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3876         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3877
3878         save_cast_details (cfg, klass, obj_reg);
3879
3880         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3881                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3882                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
3883         } else {
3884                 int klass_reg = alloc_preg (cfg);
3885
3886                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3887
3888                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3889                         /* the remoting code is broken, access the class for now */
3890                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3891                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
3892                                 if (!vt) {
3893                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3894                                         cfg->exception_ptr = klass;
3895                                         return NULL;
3896                                 }
3897                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
3898                         } else {
3899                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3900                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
3901                         }
3902                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3903                 } else {
3904                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3905                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
3906                 }
3907         }
3908
3909         MONO_START_BB (cfg, is_null_bb);
3910
3911         reset_cast_details (cfg);
3912
3913         return src;
3914 }
3915
3916 /*
3917  * Returns NULL and set the cfg exception on error.
3918  */
3919 static MonoInst*
3920 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
3921 {
3922         MonoInst *ins;
3923         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
3924         int obj_reg = src->dreg;
3925         int vtable_reg = alloc_preg (cfg);
3926         int res_reg = alloc_ireg_ref (cfg);
3927         MonoInst *klass_inst = NULL;
3928
3929         if (context_used) {
3930                 MonoInst *args [3];
3931
3932                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
3933                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
3934                         MonoInst *cache_ins;
3935
3936                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
3937
3938                         /* obj */
3939                         args [0] = src;
3940
3941                         /* klass - it's the second element of the cache entry*/
3942                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3943
3944                         /* cache */
3945                         args [2] = cache_ins;
3946
3947                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
3948                 }
3949
3950                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3951         }
3952
3953         NEW_BBLOCK (cfg, is_null_bb);
3954         NEW_BBLOCK (cfg, false_bb);
3955         NEW_BBLOCK (cfg, end_bb);
3956
3957         /* Do the assignment at the beginning, so the other assignment can be if converted */
3958         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
3959         ins->type = STACK_OBJ;
3960         ins->klass = klass;
3961
3962         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3963         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
3964
3965         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3966
3967         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
3968                 g_assert (!context_used);
3969                 /* the is_null_bb target simply copies the input register to the output */
3970                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
3971         } else {
3972                 int klass_reg = alloc_preg (cfg);
3973
3974                 if (klass->rank) {
3975                         int rank_reg = alloc_preg (cfg);
3976                         int eclass_reg = alloc_preg (cfg);
3977
3978                         g_assert (!context_used);
3979                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3980                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
3981                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
3982                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
3983                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
3984                         if (klass->cast_class == mono_defaults.object_class) {
3985                                 int parent_reg = alloc_preg (cfg);
3986                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, G_STRUCT_OFFSET (MonoClass, parent));
3987                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
3988                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3989                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3990                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
3991                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
3992                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3993                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3994                         } else if (klass->cast_class == mono_defaults.enum_class) {
3995                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
3996                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
3997                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
3998                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
3999                         } else {
4000                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4001                                         /* Check that the object is a vector too */
4002                                         int bounds_reg = alloc_preg (cfg);
4003                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, G_STRUCT_OFFSET (MonoArray, bounds));
4004                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4005                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4006                                 }
4007
4008                                 /* the is_null_bb target simply copies the input register to the output */
4009                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4010                         }
4011                 } else if (mono_class_is_nullable (klass)) {
4012                         g_assert (!context_used);
4013                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4014                         /* the is_null_bb target simply copies the input register to the output */
4015                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4016                 } else {
4017                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4018                                 g_assert (!context_used);
4019                                 /* the remoting code is broken, access the class for now */
4020                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4021                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4022                                         if (!vt) {
4023                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4024                                                 cfg->exception_ptr = klass;
4025                                                 return NULL;
4026                                         }
4027                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4028                                 } else {
4029                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4030                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4031                                 }
4032                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4033                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4034                         } else {
4035                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4036                                 /* the is_null_bb target simply copies the input register to the output */
4037                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4038                         }
4039                 }
4040         }
4041
4042         MONO_START_BB (cfg, false_bb);
4043
4044         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4045         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4046
4047         MONO_START_BB (cfg, is_null_bb);
4048
4049         MONO_START_BB (cfg, end_bb);
4050
4051         return ins;
4052 }
4053
4054 static MonoInst*
4055 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4056 {
4057         /* This opcode takes as input an object reference and a class, and returns:
4058         0) if the object is an instance of the class,
4059         1) if the object is not instance of the class,
4060         2) if the object is a proxy whose type cannot be determined */
4061
4062         MonoInst *ins;
4063 #ifndef DISABLE_REMOTING
4064         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4065 #else
4066         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4067 #endif
4068         int obj_reg = src->dreg;
4069         int dreg = alloc_ireg (cfg);
4070         int tmp_reg;
4071 #ifndef DISABLE_REMOTING
4072         int klass_reg = alloc_preg (cfg);
4073 #endif
4074
4075         NEW_BBLOCK (cfg, true_bb);
4076         NEW_BBLOCK (cfg, false_bb);
4077         NEW_BBLOCK (cfg, end_bb);
4078 #ifndef DISABLE_REMOTING
4079         NEW_BBLOCK (cfg, false2_bb);
4080         NEW_BBLOCK (cfg, no_proxy_bb);
4081 #endif
4082
4083         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4084         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4085
4086         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4087 #ifndef DISABLE_REMOTING
4088                 NEW_BBLOCK (cfg, interface_fail_bb);
4089 #endif
4090
4091                 tmp_reg = alloc_preg (cfg);
4092                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
4093 #ifndef DISABLE_REMOTING
4094                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4095                 MONO_START_BB (cfg, interface_fail_bb);
4096                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4097
4098                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4099
4100                 tmp_reg = alloc_preg (cfg);
4101                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4102                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4103                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4104 #else
4105                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4106 #endif
4107         } else {
4108 #ifndef DISABLE_REMOTING
4109                 tmp_reg = alloc_preg (cfg);
4110                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
4111                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4112
4113                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4114                 tmp_reg = alloc_preg (cfg);
4115                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4116                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4117
4118                 tmp_reg = alloc_preg (cfg);
4119                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4120                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4121                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4122
4123                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4124                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4125
4126                 MONO_START_BB (cfg, no_proxy_bb);
4127
4128                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4129 #else
4130                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4131 #endif
4132         }
4133
4134         MONO_START_BB (cfg, false_bb);
4135
4136         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4137         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4138
4139 #ifndef DISABLE_REMOTING
4140         MONO_START_BB (cfg, false2_bb);
4141
4142         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4143         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4144 #endif
4145
4146         MONO_START_BB (cfg, true_bb);
4147
4148         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4149
4150         MONO_START_BB (cfg, end_bb);
4151
4152         /* FIXME: */
4153         MONO_INST_NEW (cfg, ins, OP_ICONST);
4154         ins->dreg = dreg;
4155         ins->type = STACK_I4;
4156
4157         return ins;
4158 }
4159
4160 static MonoInst*
4161 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4162 {
4163         /* This opcode takes as input an object reference and a class, and returns:
4164         0) if the object is an instance of the class,
4165         1) if the object is a proxy whose type cannot be determined
4166         an InvalidCastException exception is thrown otherwhise*/
4167
4168         MonoInst *ins;
4169 #ifndef DISABLE_REMOTING
4170         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4171 #else
4172         MonoBasicBlock *ok_result_bb;
4173 #endif
4174         int obj_reg = src->dreg;
4175         int dreg = alloc_ireg (cfg);
4176         int tmp_reg = alloc_preg (cfg);
4177
4178 #ifndef DISABLE_REMOTING
4179         int klass_reg = alloc_preg (cfg);
4180         NEW_BBLOCK (cfg, end_bb);
4181 #endif
4182
4183         NEW_BBLOCK (cfg, ok_result_bb);
4184
4185         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4186         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4187
4188         save_cast_details (cfg, klass, obj_reg);
4189
4190         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4191 #ifndef DISABLE_REMOTING
4192                 NEW_BBLOCK (cfg, interface_fail_bb);
4193
4194                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
4195                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4196                 MONO_START_BB (cfg, interface_fail_bb);
4197                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4198
4199                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4200
4201                 tmp_reg = alloc_preg (cfg);
4202                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4203                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4204                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4205
4206                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4207                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4208 #else
4209                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
4210                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4211                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4212 #endif
4213         } else {
4214 #ifndef DISABLE_REMOTING
4215                 NEW_BBLOCK (cfg, no_proxy_bb);
4216
4217                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
4218                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoVTable, klass));
4219                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4220
4221                 tmp_reg = alloc_preg (cfg);
4222                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4223                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4224
4225                 tmp_reg = alloc_preg (cfg);
4226                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4227                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4228                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4229
4230                 NEW_BBLOCK (cfg, fail_1_bb);
4231
4232                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4233
4234                 MONO_START_BB (cfg, fail_1_bb);
4235
4236                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4237                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4238
4239                 MONO_START_BB (cfg, no_proxy_bb);
4240
4241                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4242 #else
4243                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4244 #endif
4245         }
4246
4247         MONO_START_BB (cfg, ok_result_bb);
4248
4249         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4250
4251 #ifndef DISABLE_REMOTING
4252         MONO_START_BB (cfg, end_bb);
4253 #endif
4254
4255         /* FIXME: */
4256         MONO_INST_NEW (cfg, ins, OP_ICONST);
4257         ins->dreg = dreg;
4258         ins->type = STACK_I4;
4259
4260         return ins;
4261 }
4262
4263 /*
4264  * Returns NULL and set the cfg exception on error.
4265  */
4266 static G_GNUC_UNUSED MonoInst*
4267 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used)
4268 {
4269         MonoInst *ptr;
4270         int dreg;
4271         gpointer *trampoline;
4272         MonoInst *obj, *method_ins, *tramp_ins;
4273         MonoDomain *domain;
4274         guint8 **code_slot;
4275
4276         obj = handle_alloc (cfg, klass, FALSE, 0);
4277         if (!obj)
4278                 return NULL;
4279
4280         /* Inline the contents of mono_delegate_ctor */
4281
4282         /* Set target field */
4283         /* Optimize away setting of NULL target */
4284         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
4285                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4286                 if (cfg->gen_write_barriers) {
4287                         dreg = alloc_preg (cfg);
4288                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target));
4289                         emit_write_barrier (cfg, ptr, target, 0);
4290                 }
4291         }
4292
4293         /* Set method field */
4294         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4295         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4296         if (cfg->gen_write_barriers) {
4297                 dreg = alloc_preg (cfg);
4298                 EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method));
4299                 emit_write_barrier (cfg, ptr, method_ins, 0);
4300         }
4301         /*
4302          * To avoid looking up the compiled code belonging to the target method
4303          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4304          * store it, and we fill it after the method has been compiled.
4305          */
4306         if (!cfg->compile_aot && !method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4307                 MonoInst *code_slot_ins;
4308
4309                 if (context_used) {
4310                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4311                 } else {
4312                         domain = mono_domain_get ();
4313                         mono_domain_lock (domain);
4314                         if (!domain_jit_info (domain)->method_code_hash)
4315                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4316                         code_slot = g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4317                         if (!code_slot) {
4318                                 code_slot = mono_domain_alloc0 (domain, sizeof (gpointer));
4319                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4320                         }
4321                         mono_domain_unlock (domain);
4322
4323                         EMIT_NEW_PCONST (cfg, code_slot_ins, code_slot);
4324                 }
4325                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4326         }
4327
4328         /* Set invoke_impl field */
4329         if (cfg->compile_aot) {
4330                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, klass);
4331         } else {
4332                 trampoline = mono_create_delegate_trampoline (cfg->domain, klass);
4333                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4334         }
4335         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4336
4337         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4338
4339         return obj;
4340 }
4341
4342 static MonoInst*
4343 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4344 {
4345         MonoJitICallInfo *info;
4346
4347         /* Need to register the icall so it gets an icall wrapper */
4348         info = mono_get_array_new_va_icall (rank);
4349
4350         cfg->flags |= MONO_CFG_HAS_VARARGS;
4351
4352         /* mono_array_new_va () needs a vararg calling convention */
4353         cfg->disable_llvm = TRUE;
4354
4355         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4356         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4357 }
4358
4359 static void
4360 mono_emit_load_got_addr (MonoCompile *cfg)
4361 {
4362         MonoInst *getaddr, *dummy_use;
4363
4364         if (!cfg->got_var || cfg->got_var_allocated)
4365                 return;
4366
4367         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4368         getaddr->cil_code = cfg->header->code;
4369         getaddr->dreg = cfg->got_var->dreg;
4370
4371         /* Add it to the start of the first bblock */
4372         if (cfg->bb_entry->code) {
4373                 getaddr->next = cfg->bb_entry->code;
4374                 cfg->bb_entry->code = getaddr;
4375         }
4376         else
4377                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4378
4379         cfg->got_var_allocated = TRUE;
4380
4381         /*
4382          * Add a dummy use to keep the got_var alive, since real uses might
4383          * only be generated by the back ends.
4384          * Add it to end_bblock, so the variable's lifetime covers the whole
4385          * method.
4386          * It would be better to make the usage of the got var explicit in all
4387          * cases when the backend needs it (i.e. calls, throw etc.), so this
4388          * wouldn't be needed.
4389          */
4390         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4391         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4392 }
4393
4394 static int inline_limit;
4395 static gboolean inline_limit_inited;
4396
4397 static gboolean
4398 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4399 {
4400         MonoMethodHeaderSummary header;
4401         MonoVTable *vtable;
4402 #ifdef MONO_ARCH_SOFT_FLOAT
4403         MonoMethodSignature *sig = mono_method_signature (method);
4404         int i;
4405 #endif
4406
4407         if (cfg->generic_sharing_context)
4408                 return FALSE;
4409
4410         if (cfg->inline_depth > 10)
4411                 return FALSE;
4412
4413 #ifdef MONO_ARCH_HAVE_LMF_OPS
4414         if (((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4415                  (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) &&
4416             !MONO_TYPE_ISSTRUCT (signature->ret) && !mini_class_is_system_array (method->klass))
4417                 return TRUE;
4418 #endif
4419
4420
4421         if (!mono_method_get_header_summary (method, &header))
4422                 return FALSE;
4423
4424         /*runtime, icall and pinvoke are checked by summary call*/
4425         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4426             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4427             (mono_class_is_marshalbyref (method->klass)) ||
4428             header.has_clauses)
4429                 return FALSE;
4430
4431         /* also consider num_locals? */
4432         /* Do the size check early to avoid creating vtables */
4433         if (!inline_limit_inited) {
4434                 if (getenv ("MONO_INLINELIMIT"))
4435                         inline_limit = atoi (getenv ("MONO_INLINELIMIT"));
4436                 else
4437                         inline_limit = INLINE_LENGTH_LIMIT;
4438                 inline_limit_inited = TRUE;
4439         }
4440         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4441                 return FALSE;
4442
4443         /*
4444          * if we can initialize the class of the method right away, we do,
4445          * otherwise we don't allow inlining if the class needs initialization,
4446          * since it would mean inserting a call to mono_runtime_class_init()
4447          * inside the inlined code
4448          */
4449         if (!(cfg->opt & MONO_OPT_SHARED)) {
4450                 if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
4451                         if (cfg->run_cctors && method->klass->has_cctor) {
4452                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4453                                 if (!method->klass->runtime_info)
4454                                         /* No vtable created yet */
4455                                         return FALSE;
4456                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4457                                 if (!vtable)
4458                                         return FALSE;
4459                                 /* This makes so that inline cannot trigger */
4460                                 /* .cctors: too many apps depend on them */
4461                                 /* running with a specific order... */
4462                                 if (! vtable->initialized)
4463                                         return FALSE;
4464                                 mono_runtime_class_init (vtable);
4465                         }
4466                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4467                         if (!method->klass->runtime_info)
4468                                 /* No vtable created yet */
4469                                 return FALSE;
4470                         vtable = mono_class_vtable (cfg->domain, method->klass);
4471                         if (!vtable)
4472                                 return FALSE;
4473                         if (!vtable->initialized)
4474                                 return FALSE;
4475                 }
4476         } else {
4477                 /*
4478                  * If we're compiling for shared code
4479                  * the cctor will need to be run at aot method load time, for example,
4480                  * or at the end of the compilation of the inlining method.
4481                  */
4482                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
4483                         return FALSE;
4484         }
4485
4486         /*
4487          * CAS - do not inline methods with declarative security
4488          * Note: this has to be before any possible return TRUE;
4489          */
4490         if (mono_security_method_has_declsec (method))
4491                 return FALSE;
4492
4493 #ifdef MONO_ARCH_SOFT_FLOAT
4494         /* FIXME: */
4495         if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4496                 return FALSE;
4497         for (i = 0; i < sig->param_count; ++i)
4498                 if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4499                         return FALSE;
4500 #endif
4501
4502         return TRUE;
4503 }
4504
4505 static gboolean
4506 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoVTable *vtable)
4507 {
4508         if (vtable->initialized && !cfg->compile_aot)
4509                 return FALSE;
4510
4511         if (vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)
4512                 return FALSE;
4513
4514         if (!mono_class_needs_cctor_run (vtable->klass, method))
4515                 return FALSE;
4516
4517         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (vtable->klass == method->klass))
4518                 /* The initialization is already done before the method is called */
4519                 return FALSE;
4520
4521         return TRUE;
4522 }
4523
4524 static MonoInst*
4525 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4526 {
4527         MonoInst *ins;
4528         guint32 size;
4529         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4530         int context_used;
4531
4532         if (mini_is_gsharedvt_klass (cfg, klass)) {
4533                 size = -1;
4534         } else {
4535                 mono_class_init (klass);
4536                 size = mono_class_array_element_size (klass);
4537         }
4538
4539         mult_reg = alloc_preg (cfg);
4540         array_reg = arr->dreg;
4541         index_reg = index->dreg;
4542
4543 #if SIZEOF_REGISTER == 8
4544         /* The array reg is 64 bits but the index reg is only 32 */
4545         if (COMPILE_LLVM (cfg)) {
4546                 /* Not needed */
4547                 index2_reg = index_reg;
4548         } else {
4549                 index2_reg = alloc_preg (cfg);
4550                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4551         }
4552 #else
4553         if (index->type == STACK_I8) {
4554                 index2_reg = alloc_preg (cfg);
4555                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4556         } else {
4557                 index2_reg = index_reg;
4558         }
4559 #endif
4560
4561         if (bcheck)
4562                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4563
4564 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4565         if (size == 1 || size == 2 || size == 4 || size == 8) {
4566                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4567
4568                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], G_STRUCT_OFFSET (MonoArray, vector));
4569                 ins->klass = mono_class_get_element_class (klass);
4570                 ins->type = STACK_MP;
4571
4572                 return ins;
4573         }
4574 #endif
4575
4576         add_reg = alloc_ireg_mp (cfg);
4577
4578         if (size == -1) {
4579                 MonoInst *rgctx_ins;
4580
4581                 /* gsharedvt */
4582                 g_assert (cfg->generic_sharing_context);
4583                 context_used = mini_class_check_context_used (cfg, klass);
4584                 g_assert (context_used);
4585                 rgctx_ins = emit_get_gsharedvt_info (cfg, &klass->byval_arg, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4586                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4587         } else {
4588                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4589         }
4590         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4591         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
4592         ins->klass = mono_class_get_element_class (klass);
4593         ins->type = STACK_MP;
4594         MONO_ADD_INS (cfg->cbb, ins);
4595
4596         return ins;
4597 }
4598
4599 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4600 static MonoInst*
4601 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4602 {
4603         int bounds_reg = alloc_preg (cfg);
4604         int add_reg = alloc_ireg_mp (cfg);
4605         int mult_reg = alloc_preg (cfg);
4606         int mult2_reg = alloc_preg (cfg);
4607         int low1_reg = alloc_preg (cfg);
4608         int low2_reg = alloc_preg (cfg);
4609         int high1_reg = alloc_preg (cfg);
4610         int high2_reg = alloc_preg (cfg);
4611         int realidx1_reg = alloc_preg (cfg);
4612         int realidx2_reg = alloc_preg (cfg);
4613         int sum_reg = alloc_preg (cfg);
4614         int index1, index2, tmpreg;
4615         MonoInst *ins;
4616         guint32 size;
4617
4618         mono_class_init (klass);
4619         size = mono_class_array_element_size (klass);
4620
4621         index1 = index_ins1->dreg;
4622         index2 = index_ins2->dreg;
4623
4624 #if SIZEOF_REGISTER == 8
4625         /* The array reg is 64 bits but the index reg is only 32 */
4626         if (COMPILE_LLVM (cfg)) {
4627                 /* Not needed */
4628         } else {
4629                 tmpreg = alloc_preg (cfg);
4630                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4631                 index1 = tmpreg;
4632                 tmpreg = alloc_preg (cfg);
4633                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4634                 index2 = tmpreg;
4635         }
4636 #else
4637         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4638         tmpreg = -1;
4639 #endif
4640
4641         /* range checking */
4642         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4643                                        arr->dreg, G_STRUCT_OFFSET (MonoArray, bounds));
4644
4645         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4646                                        bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4647         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4648         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4649                                        bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, length));
4650         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4651         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4652
4653         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4654                                        bounds_reg, sizeof (MonoArrayBounds) + G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4655         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4656         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4657                                        bounds_reg, sizeof (MonoArrayBounds) + G_STRUCT_OFFSET (MonoArrayBounds, length));
4658         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4659         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4660
4661         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4662         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4663         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4664         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4665         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
4666
4667         ins->type = STACK_MP;
4668         ins->klass = klass;
4669         MONO_ADD_INS (cfg->cbb, ins);
4670
4671         return ins;
4672 }
4673 #endif
4674
4675 static MonoInst*
4676 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4677 {
4678         int rank;
4679         MonoInst *addr;
4680         MonoMethod *addr_method;
4681         int element_size;
4682
4683         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4684
4685         if (rank == 1)
4686                 return mini_emit_ldelema_1_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], TRUE);
4687
4688 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4689         /* emit_ldelema_2 depends on OP_LMUL */
4690         if (rank == 2 && (cfg->opt & MONO_OPT_INTRINS)) {
4691                 return mini_emit_ldelema_2_ins (cfg, cmethod->klass->element_class, sp [0], sp [1], sp [2]);
4692         }
4693 #endif
4694
4695         element_size = mono_class_array_element_size (cmethod->klass->element_class);
4696         addr_method = mono_marshal_get_array_address (rank, element_size);
4697         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4698
4699         return addr;
4700 }
4701
4702 static MonoBreakPolicy
4703 always_insert_breakpoint (MonoMethod *method)
4704 {
4705         return MONO_BREAK_POLICY_ALWAYS;
4706 }
4707
4708 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4709
4710 /**
4711  * mono_set_break_policy:
4712  * policy_callback: the new callback function
4713  *
4714  * Allow embedders to decide wherther to actually obey breakpoint instructions
4715  * (both break IL instructions and Debugger.Break () method calls), for example
4716  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4717  * untrusted or semi-trusted code.
4718  *
4719  * @policy_callback will be called every time a break point instruction needs to
4720  * be inserted with the method argument being the method that calls Debugger.Break()
4721  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
4722  * if it wants the breakpoint to not be effective in the given method.
4723  * #MONO_BREAK_POLICY_ALWAYS is the default.
4724  */
4725 void
4726 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4727 {
4728         if (policy_callback)
4729                 break_policy_func = policy_callback;
4730         else
4731                 break_policy_func = always_insert_breakpoint;
4732 }
4733
4734 static gboolean
4735 should_insert_brekpoint (MonoMethod *method) {
4736         switch (break_policy_func (method)) {
4737         case MONO_BREAK_POLICY_ALWAYS:
4738                 return TRUE;
4739         case MONO_BREAK_POLICY_NEVER:
4740                 return FALSE;
4741         case MONO_BREAK_POLICY_ON_DBG:
4742                 return mono_debug_using_mono_debugger ();
4743         default:
4744                 g_warning ("Incorrect value returned from break policy callback");
4745                 return FALSE;
4746         }
4747 }
4748
4749 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4750 static MonoInst*
4751 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4752 {
4753         MonoInst *addr, *store, *load;
4754         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4755
4756         /* the bounds check is already done by the callers */
4757         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4758         if (is_set) {
4759                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4760                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4761                 if (mini_type_is_reference (cfg, fsig->params [2]))
4762                         emit_write_barrier (cfg, addr, load, -1);
4763         } else {
4764                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4765                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4766         }
4767         return store;
4768 }
4769
4770
4771 static gboolean
4772 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4773 {
4774         return mini_type_is_reference (cfg, &klass->byval_arg);
4775 }
4776
4777 static MonoInst*
4778 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4779 {
4780         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4781                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
4782                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4783                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4784                 MonoInst *iargs [3];
4785
4786                 if (!helper->slot)
4787                         mono_class_setup_vtable (obj_array);
4788                 g_assert (helper->slot);
4789
4790                 if (sp [0]->type != STACK_OBJ)
4791                         return NULL;
4792                 if (sp [2]->type != STACK_OBJ)
4793                         return NULL;
4794
4795                 iargs [2] = sp [2];
4796                 iargs [1] = sp [1];
4797                 iargs [0] = sp [0];
4798
4799                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4800         } else {
4801                 MonoInst *ins;
4802
4803                 if (mini_is_gsharedvt_klass (cfg, klass)) {
4804                         MonoInst *addr;
4805
4806                         // FIXME-VT: OP_ICONST optimization
4807                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4808                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4809                         ins->opcode = OP_STOREV_MEMBASE;
4810                 } else if (sp [1]->opcode == OP_ICONST) {
4811                         int array_reg = sp [0]->dreg;
4812                         int index_reg = sp [1]->dreg;
4813                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
4814
4815                         if (safety_checks)
4816                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4817                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4818                 } else {
4819                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4820                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4821                         if (generic_class_is_reference_type (cfg, klass))
4822                                 emit_write_barrier (cfg, addr, sp [2], -1);
4823                 }
4824                 return ins;
4825         }
4826 }
4827
4828 static MonoInst*
4829 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4830 {
4831         MonoClass *eklass;
4832
4833         if (is_set)
4834                 eklass = mono_class_from_mono_type (fsig->params [2]);
4835         else
4836                 eklass = mono_class_from_mono_type (fsig->ret);
4837
4838
4839         if (is_set) {
4840                 return emit_array_store (cfg, eklass, args, FALSE);
4841         } else {
4842                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4843                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4844                 return ins;
4845         }
4846 }
4847
4848 static MonoInst*
4849 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4850 {
4851         MonoInst *ins = NULL;
4852 #ifdef MONO_ARCH_SIMD_INTRINSICS
4853         if (cfg->opt & MONO_OPT_SIMD) {
4854                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4855                 if (ins)
4856                         return ins;
4857         }
4858 #endif
4859
4860         return ins;
4861 }
4862
4863 static MonoInst*
4864 emit_memory_barrier (MonoCompile *cfg, int kind)
4865 {
4866         MonoInst *ins = NULL;
4867         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4868         MONO_ADD_INS (cfg->cbb, ins);
4869         ins->backend.memory_barrier_kind = kind;
4870
4871         return ins;
4872 }
4873
4874 static MonoInst*
4875 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4876 {
4877         MonoInst *ins = NULL;
4878         int opcode = 0;
4879
4880         /* The LLVM backend supports these intrinsics */
4881         if (cmethod->klass == mono_defaults.math_class) {
4882                 if (strcmp (cmethod->name, "Sin") == 0) {
4883                         opcode = OP_SIN;
4884                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4885                         opcode = OP_COS;
4886                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4887                         opcode = OP_SQRT;
4888                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4889                         opcode = OP_ABS;
4890                 }
4891
4892                 if (opcode) {
4893                         MONO_INST_NEW (cfg, ins, opcode);
4894                         ins->type = STACK_R8;
4895                         ins->dreg = mono_alloc_freg (cfg);
4896                         ins->sreg1 = args [0]->dreg;
4897                         MONO_ADD_INS (cfg->cbb, ins);
4898                 }
4899
4900                 opcode = 0;
4901                 if (cfg->opt & MONO_OPT_CMOV) {
4902                         if (strcmp (cmethod->name, "Min") == 0) {
4903                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4904                                         opcode = OP_IMIN;
4905                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4906                                         opcode = OP_IMIN_UN;
4907                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4908                                         opcode = OP_LMIN;
4909                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4910                                         opcode = OP_LMIN_UN;
4911                         } else if (strcmp (cmethod->name, "Max") == 0) {
4912                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4913                                         opcode = OP_IMAX;
4914                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4915                                         opcode = OP_IMAX_UN;
4916                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4917                                         opcode = OP_LMAX;
4918                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4919                                         opcode = OP_LMAX_UN;
4920                         }
4921                 }
4922
4923                 if (opcode) {
4924                         MONO_INST_NEW (cfg, ins, opcode);
4925                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4926                         ins->dreg = mono_alloc_ireg (cfg);
4927                         ins->sreg1 = args [0]->dreg;
4928                         ins->sreg2 = args [1]->dreg;
4929                         MONO_ADD_INS (cfg->cbb, ins);
4930                 }
4931         }
4932
4933         return ins;
4934 }
4935
4936 static MonoInst*
4937 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4938 {
4939         if (cmethod->klass == mono_defaults.array_class) {
4940                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4941                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4942                 if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4943                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4944         }
4945
4946         return NULL;
4947 }
4948
4949 static MonoInst*
4950 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4951 {
4952         MonoInst *ins = NULL;
4953
4954         static MonoClass *runtime_helpers_class = NULL;
4955         if (! runtime_helpers_class)
4956                 runtime_helpers_class = mono_class_from_name (mono_defaults.corlib,
4957                         "System.Runtime.CompilerServices", "RuntimeHelpers");
4958
4959         if (cmethod->klass == mono_defaults.string_class) {
4960                 if (strcmp (cmethod->name, "get_Chars") == 0) {
4961                         int dreg = alloc_ireg (cfg);
4962                         int index_reg = alloc_preg (cfg);
4963                         int mult_reg = alloc_preg (cfg);
4964                         int add_reg = alloc_preg (cfg);
4965
4966 #if SIZEOF_REGISTER == 8
4967                         /* The array reg is 64 bits but the index reg is only 32 */
4968                         MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4969 #else
4970                         index_reg = args [1]->dreg;
4971 #endif
4972                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4973
4974 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4975                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, G_STRUCT_OFFSET (MonoString, chars));
4976                         add_reg = ins->dreg;
4977                         /* Avoid a warning */
4978                         mult_reg = 0;
4979                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4980                                                                    add_reg, 0);
4981 #else
4982                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4983                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4984                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4985                                                                    add_reg, G_STRUCT_OFFSET (MonoString, chars));
4986 #endif
4987                         type_from_op (ins, NULL, NULL);
4988                         return ins;
4989                 } else if (strcmp (cmethod->name, "get_Length") == 0) {
4990                         int dreg = alloc_ireg (cfg);
4991                         /* Decompose later to allow more optimizations */
4992                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4993                         ins->type = STACK_I4;
4994                         ins->flags |= MONO_INST_FAULT;
4995                         cfg->cbb->has_array_access = TRUE;
4996                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4997
4998                         return ins;
4999                 } else if (strcmp (cmethod->name, "InternalSetChar") == 0) {
5000                         int mult_reg = alloc_preg (cfg);
5001                         int add_reg = alloc_preg (cfg);
5002
5003                         /* The corlib functions check for oob already. */
5004                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, args [1]->dreg, 1);
5005                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5006                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, G_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
5007                         return cfg->cbb->last_ins;
5008                 } else
5009                         return NULL;
5010         } else if (cmethod->klass == mono_defaults.object_class) {
5011
5012                 if (strcmp (cmethod->name, "GetType") == 0) {
5013                         int dreg = alloc_ireg_ref (cfg);
5014                         int vt_reg = alloc_preg (cfg);
5015                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
5016                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, G_STRUCT_OFFSET (MonoVTable, type));
5017                         type_from_op (ins, NULL, NULL);
5018
5019                         return ins;
5020 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
5021                 } else if (strcmp (cmethod->name, "InternalGetHashCode") == 0 && !mono_gc_is_moving ()) {
5022                         int dreg = alloc_ireg (cfg);
5023                         int t1 = alloc_ireg (cfg);
5024
5025                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5026                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5027                         ins->type = STACK_I4;
5028
5029                         return ins;
5030 #endif
5031                 } else if (strcmp (cmethod->name, ".ctor") == 0) {
5032                         MONO_INST_NEW (cfg, ins, OP_NOP);
5033                         MONO_ADD_INS (cfg->cbb, ins);
5034                         return ins;
5035                 } else
5036                         return NULL;
5037         } else if (cmethod->klass == mono_defaults.array_class) {
5038                 if (!cfg->gsharedvt && strcmp (cmethod->name + 1, "etGenericValueImpl") == 0)
5039                         return emit_array_generic_access (cfg, fsig, args, *cmethod->name == 'S');
5040
5041 #ifndef MONO_BIG_ARRAYS
5042                 /*
5043                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5044                  * Array methods.
5045                  */
5046                 if ((strcmp (cmethod->name, "GetLength") == 0 || strcmp (cmethod->name, "GetLowerBound") == 0) && args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5047                         int dreg = alloc_ireg (cfg);
5048                         int bounds_reg = alloc_ireg_mp (cfg);
5049                         MonoBasicBlock *end_bb, *szarray_bb;
5050                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5051
5052                         NEW_BBLOCK (cfg, end_bb);
5053                         NEW_BBLOCK (cfg, szarray_bb);
5054
5055                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5056                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoArray, bounds));
5057                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5058                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5059                         /* Non-szarray case */
5060                         if (get_length)
5061                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5062                                                                            bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, length));
5063                         else
5064                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5065                                                                            bounds_reg, G_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5066                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5067                         MONO_START_BB (cfg, szarray_bb);
5068                         /* Szarray case */
5069                         if (get_length)
5070                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5071                                                                            args [0]->dreg, G_STRUCT_OFFSET (MonoArray, max_length));
5072                         else
5073                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5074                         MONO_START_BB (cfg, end_bb);
5075
5076                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5077                         ins->type = STACK_I4;
5078
5079                         return ins;
5080                 }
5081 #endif
5082
5083                 if (cmethod->name [0] != 'g')
5084                         return NULL;
5085
5086                 if (strcmp (cmethod->name, "get_Rank") == 0) {
5087                         int dreg = alloc_ireg (cfg);
5088                         int vtable_reg = alloc_preg (cfg);
5089                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5090                                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
5091                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5092                                                                    vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
5093                         type_from_op (ins, NULL, NULL);
5094
5095                         return ins;
5096                 } else if (strcmp (cmethod->name, "get_Length") == 0) {
5097                         int dreg = alloc_ireg (cfg);
5098
5099                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5100                                                                                  args [0]->dreg, G_STRUCT_OFFSET (MonoArray, max_length));
5101                         type_from_op (ins, NULL, NULL);
5102
5103                         return ins;
5104                 } else
5105                         return NULL;
5106         } else if (cmethod->klass == runtime_helpers_class) {
5107
5108                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0) {
5109                         EMIT_NEW_ICONST (cfg, ins, G_STRUCT_OFFSET (MonoString, chars));
5110                         return ins;
5111                 } else
5112                         return NULL;
5113         } else if (cmethod->klass == mono_defaults.thread_class) {
5114                 if (strcmp (cmethod->name, "SpinWait_nop") == 0) {
5115                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5116                         MONO_ADD_INS (cfg->cbb, ins);
5117                         return ins;
5118                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0) {
5119                         return emit_memory_barrier (cfg, FullBarrier);
5120                 }
5121         } else if (cmethod->klass == mono_defaults.monitor_class) {
5122
5123                 /* FIXME this should be integrated to the check below once we support the trampoline version */
5124 #if defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
5125                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) {
5126                         MonoMethod *fast_method = NULL;
5127
5128                         /* Avoid infinite recursion */
5129                         if (cfg->method->wrapper_type == MONO_WRAPPER_UNKNOWN && !strcmp (cfg->method->name, "FastMonitorEnterV4"))
5130                                 return NULL;
5131
5132                         fast_method = mono_monitor_get_fast_path (cmethod);
5133                         if (!fast_method)
5134                                 return NULL;
5135
5136                         return (MonoInst*)mono_emit_method_call (cfg, fast_method, args, NULL);
5137                 }
5138 #endif
5139
5140 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
5141                 if (strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 1) {
5142                         MonoCallInst *call;
5143
5144                         if (COMPILE_LLVM (cfg)) {
5145                                 /*
5146                                  * Pass the argument normally, the LLVM backend will handle the
5147                                  * calling convention problems.
5148                                  */
5149                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5150                         } else {
5151                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER,
5152                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5153                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5154                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5155                         }
5156
5157                         return (MonoInst*)call;
5158                 } else if (strcmp (cmethod->name, "Exit") == 0) {
5159                         MonoCallInst *call;
5160
5161                         if (COMPILE_LLVM (cfg)) {
5162                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
5163                         } else {
5164                                 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT,
5165                                             NULL, helper_sig_monitor_enter_exit_trampoline, NULL);
5166                                 mono_call_inst_add_outarg_reg (cfg, call, args [0]->dreg,
5167                                                                                            MONO_ARCH_MONITOR_OBJECT_REG, FALSE);
5168                         }
5169
5170                         return (MonoInst*)call;
5171                 }
5172 #elif defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
5173                 {
5174                 MonoMethod *fast_method = NULL;
5175
5176                 /* Avoid infinite recursion */
5177                 if (cfg->method->wrapper_type == MONO_WRAPPER_UNKNOWN &&
5178                                 (strcmp (cfg->method->name, "FastMonitorEnter") == 0 ||
5179                                  strcmp (cfg->method->name, "FastMonitorExit") == 0))
5180                         return NULL;
5181
5182                 if ((strcmp (cmethod->name, "Enter") == 0 && fsig->param_count == 2) ||
5183                                 strcmp (cmethod->name, "Exit") == 0)
5184                         fast_method = mono_monitor_get_fast_path (cmethod);
5185                 if (!fast_method)
5186                         return NULL;
5187
5188                 return (MonoInst*)mono_emit_method_call (cfg, fast_method, args, NULL);
5189                 }
5190 #endif
5191         } else if (cmethod->klass->image == mono_defaults.corlib &&
5192                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5193                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5194                 ins = NULL;
5195
5196 #if SIZEOF_REGISTER == 8
5197                 if (strcmp (cmethod->name, "Read") == 0 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5198                         /* 64 bit reads are already atomic */
5199                         MONO_INST_NEW (cfg, ins, OP_LOADI8_MEMBASE);
5200                         ins->dreg = mono_alloc_preg (cfg);
5201                         ins->inst_basereg = args [0]->dreg;
5202                         ins->inst_offset = 0;
5203                         MONO_ADD_INS (cfg->cbb, ins);
5204                 }
5205 #endif
5206
5207 #ifdef MONO_ARCH_HAVE_ATOMIC_ADD
5208                 if (strcmp (cmethod->name, "Increment") == 0) {
5209                         MonoInst *ins_iconst;
5210                         guint32 opcode = 0;
5211
5212                         if (fsig->params [0]->type == MONO_TYPE_I4)
5213                                 opcode = OP_ATOMIC_ADD_NEW_I4;
5214 #if SIZEOF_REGISTER == 8
5215                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5216                                 opcode = OP_ATOMIC_ADD_NEW_I8;
5217 #endif
5218                         if (opcode) {
5219                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5220                                 ins_iconst->inst_c0 = 1;
5221                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5222                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5223
5224                                 MONO_INST_NEW (cfg, ins, opcode);
5225                                 ins->dreg = mono_alloc_ireg (cfg);
5226                                 ins->inst_basereg = args [0]->dreg;
5227                                 ins->inst_offset = 0;
5228                                 ins->sreg2 = ins_iconst->dreg;
5229                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
5230                                 MONO_ADD_INS (cfg->cbb, ins);
5231                         }
5232                 } else if (strcmp (cmethod->name, "Decrement") == 0) {
5233                         MonoInst *ins_iconst;
5234                         guint32 opcode = 0;
5235
5236                         if (fsig->params [0]->type == MONO_TYPE_I4)
5237                                 opcode = OP_ATOMIC_ADD_NEW_I4;
5238 #if SIZEOF_REGISTER == 8
5239                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5240                                 opcode = OP_ATOMIC_ADD_NEW_I8;
5241 #endif
5242                         if (opcode) {
5243                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5244                                 ins_iconst->inst_c0 = -1;
5245                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5246                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5247
5248                                 MONO_INST_NEW (cfg, ins, opcode);
5249                                 ins->dreg = mono_alloc_ireg (cfg);
5250                                 ins->inst_basereg = args [0]->dreg;
5251                                 ins->inst_offset = 0;
5252                                 ins->sreg2 = ins_iconst->dreg;
5253                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
5254                                 MONO_ADD_INS (cfg->cbb, ins);
5255                         }
5256                 } else if (strcmp (cmethod->name, "Add") == 0) {
5257                         guint32 opcode = 0;
5258
5259                         if (fsig->params [0]->type == MONO_TYPE_I4)
5260                                 opcode = OP_ATOMIC_ADD_NEW_I4;
5261 #if SIZEOF_REGISTER == 8
5262                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5263                                 opcode = OP_ATOMIC_ADD_NEW_I8;
5264 #endif
5265
5266                         if (opcode) {
5267                                 MONO_INST_NEW (cfg, ins, opcode);
5268                                 ins->dreg = mono_alloc_ireg (cfg);
5269                                 ins->inst_basereg = args [0]->dreg;
5270                                 ins->inst_offset = 0;
5271                                 ins->sreg2 = args [1]->dreg;
5272                                 ins->type = (opcode == OP_ATOMIC_ADD_NEW_I4) ? STACK_I4 : STACK_I8;
5273                                 MONO_ADD_INS (cfg->cbb, ins);
5274                         }
5275                 }
5276 #endif /* MONO_ARCH_HAVE_ATOMIC_ADD */
5277
5278 #ifdef MONO_ARCH_HAVE_ATOMIC_EXCHANGE
5279                 if (strcmp (cmethod->name, "Exchange") == 0) {
5280                         guint32 opcode;
5281                         gboolean is_ref = fsig->params [0]->type == MONO_TYPE_OBJECT;
5282
5283                         if (fsig->params [0]->type == MONO_TYPE_I4)
5284                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5285 #if SIZEOF_REGISTER == 8
5286                         else if (is_ref || (fsig->params [0]->type == MONO_TYPE_I8) ||
5287                                         (fsig->params [0]->type == MONO_TYPE_I))
5288                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5289 #else
5290                         else if (is_ref || (fsig->params [0]->type == MONO_TYPE_I))
5291                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5292 #endif
5293                         else
5294                                 return NULL;
5295
5296                         MONO_INST_NEW (cfg, ins, opcode);
5297                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5298                         ins->inst_basereg = args [0]->dreg;
5299                         ins->inst_offset = 0;
5300                         ins->sreg2 = args [1]->dreg;
5301                         MONO_ADD_INS (cfg->cbb, ins);
5302
5303                         switch (fsig->params [0]->type) {
5304                         case MONO_TYPE_I4:
5305                                 ins->type = STACK_I4;
5306                                 break;
5307                         case MONO_TYPE_I8:
5308                         case MONO_TYPE_I:
5309                                 ins->type = STACK_I8;
5310                                 break;
5311                         case MONO_TYPE_OBJECT:
5312                                 ins->type = STACK_OBJ;
5313                                 break;
5314                         default:
5315                                 g_assert_not_reached ();
5316                         }
5317
5318                         if (cfg->gen_write_barriers && is_ref)
5319                                 emit_write_barrier (cfg, args [0], args [1], -1);
5320                 }
5321 #endif /* MONO_ARCH_HAVE_ATOMIC_EXCHANGE */
5322
5323 #ifdef MONO_ARCH_HAVE_ATOMIC_CAS
5324                 if ((strcmp (cmethod->name, "CompareExchange") == 0)) {
5325                         int size = 0;
5326                         gboolean is_ref = mini_type_is_reference (cfg, fsig->params [1]);
5327                         if (fsig->params [1]->type == MONO_TYPE_I4)
5328                                 size = 4;
5329                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I)
5330                                 size = sizeof (gpointer);
5331                         else if (sizeof (gpointer) == 8 && fsig->params [1]->type == MONO_TYPE_I8)
5332                                 size = 8;
5333                         if (size == 4) {
5334                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5335                                 ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5336                                 ins->sreg1 = args [0]->dreg;
5337                                 ins->sreg2 = args [1]->dreg;
5338                                 ins->sreg3 = args [2]->dreg;
5339                                 ins->type = STACK_I4;
5340                                 MONO_ADD_INS (cfg->cbb, ins);
5341                         } else if (size == 8) {
5342                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I8);
5343                                 ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5344                                 ins->sreg1 = args [0]->dreg;
5345                                 ins->sreg2 = args [1]->dreg;
5346                                 ins->sreg3 = args [2]->dreg;
5347                                 ins->type = STACK_I8;
5348                                 MONO_ADD_INS (cfg->cbb, ins);
5349                         } else {
5350                                 /* g_assert_not_reached (); */
5351                         }
5352                         if (cfg->gen_write_barriers && is_ref)
5353                                 emit_write_barrier (cfg, args [0], args [1], -1);
5354                 }
5355 #endif /* MONO_ARCH_HAVE_ATOMIC_CAS */
5356
5357                 if (strcmp (cmethod->name, "MemoryBarrier") == 0)
5358                         ins = emit_memory_barrier (cfg, FullBarrier);
5359
5360                 if (ins)
5361                         return ins;
5362         } else if (cmethod->klass->image == mono_defaults.corlib) {
5363                 if (cmethod->name [0] == 'B' && strcmp (cmethod->name, "Break") == 0
5364                                 && strcmp (cmethod->klass->name, "Debugger") == 0) {
5365                         if (should_insert_brekpoint (cfg->method)) {
5366                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5367                         } else {
5368                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5369                                 MONO_ADD_INS (cfg->cbb, ins);
5370                         }
5371                         return ins;
5372                 }
5373                 if (cmethod->name [0] == 'g' && strcmp (cmethod->name, "get_IsRunningOnWindows") == 0
5374                                 && strcmp (cmethod->klass->name, "Environment") == 0) {
5375 #ifdef TARGET_WIN32
5376                         EMIT_NEW_ICONST (cfg, ins, 1);
5377 #else
5378                         EMIT_NEW_ICONST (cfg, ins, 0);
5379 #endif
5380                         return ins;
5381                 }
5382         } else if (cmethod->klass == mono_defaults.math_class) {
5383                 /*
5384                  * There is general branches code for Min/Max, but it does not work for
5385                  * all inputs:
5386                  * http://everything2.com/?node_id=1051618
5387                  */
5388         }
5389
5390 #ifdef MONO_ARCH_SIMD_INTRINSICS
5391         if (cfg->opt & MONO_OPT_SIMD) {
5392                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5393                 if (ins)
5394                         return ins;
5395         }
5396 #endif
5397
5398         if (COMPILE_LLVM (cfg)) {
5399                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5400                 if (ins)
5401                         return ins;
5402         }
5403
5404         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5405 }
5406
5407 /*
5408  * This entry point could be used later for arbitrary method
5409  * redirection.
5410  */
5411 inline static MonoInst*
5412 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5413                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this)
5414 {
5415         if (method->klass == mono_defaults.string_class) {
5416                 /* managed string allocation support */
5417                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
5418                         MonoInst *iargs [2];
5419                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5420                         MonoMethod *managed_alloc = NULL;
5421
5422                         g_assert (vtable); /*Should not fail since it System.String*/
5423 #ifndef MONO_CROSS_COMPILE
5424                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE);
5425 #endif
5426                         if (!managed_alloc)
5427                                 return NULL;
5428                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5429                         iargs [1] = args [0];
5430                         return mono_emit_method_call (cfg, managed_alloc, iargs, this);
5431                 }
5432         }
5433         return NULL;
5434 }
5435
5436 static void
5437 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5438 {
5439         MonoInst *store, *temp;
5440         int i;
5441
5442         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5443                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5444
5445                 /*
5446                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5447                  * would be different than the MonoInst's used to represent arguments, and
5448                  * the ldelema implementation can't deal with that.
5449                  * Solution: When ldelema is used on an inline argument, create a var for
5450                  * it, emit ldelema on that var, and emit the saving code below in
5451                  * inline_method () if needed.
5452                  */
5453                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5454                 cfg->args [i] = temp;
5455                 /* This uses cfg->args [i] which is set by the preceeding line */
5456                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5457                 store->cil_code = sp [0]->cil_code;
5458                 sp++;
5459         }
5460 }
5461
5462 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5463 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5464
5465 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5466 static gboolean
5467 check_inline_called_method_name_limit (MonoMethod *called_method)
5468 {
5469         int strncmp_result;
5470         static char *limit = NULL;
5471
5472         if (limit == NULL) {
5473                 char *limit_string = getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5474
5475                 if (limit_string != NULL)
5476                         limit = limit_string;
5477                 else
5478                         limit = (char *) "";
5479         }
5480
5481         if (limit [0] != '\0') {
5482                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5483
5484                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5485                 g_free (called_method_name);
5486
5487                 //return (strncmp_result <= 0);
5488                 return (strncmp_result == 0);
5489         } else {
5490                 return TRUE;
5491         }
5492 }
5493 #endif
5494
5495 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5496 static gboolean
5497 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5498 {
5499         int strncmp_result;
5500         static char *limit = NULL;
5501
5502         if (limit == NULL) {
5503                 char *limit_string = getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5504                 if (limit_string != NULL) {
5505                         limit = limit_string;
5506                 } else {
5507                         limit = (char *) "";
5508                 }
5509         }
5510
5511         if (limit [0] != '\0') {
5512                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5513
5514                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5515                 g_free (caller_method_name);
5516
5517                 //return (strncmp_result <= 0);
5518                 return (strncmp_result == 0);
5519         } else {
5520                 return TRUE;
5521         }
5522 }
5523 #endif
5524
5525 static void
5526 emit_init_rvar (MonoCompile *cfg, MonoInst *rvar, MonoType *rtype)
5527 {
5528         static double r8_0 = 0.0;
5529         MonoInst *ins;
5530
5531         switch (rvar->type) {
5532         case STACK_I4:
5533                 MONO_EMIT_NEW_ICONST (cfg, rvar->dreg, 0);
5534                 break;
5535         case STACK_I8:
5536                 MONO_EMIT_NEW_I8CONST (cfg, rvar->dreg, 0);
5537                 break;
5538         case STACK_PTR:
5539         case STACK_MP:
5540         case STACK_OBJ:
5541                 MONO_EMIT_NEW_PCONST (cfg, rvar->dreg, 0);
5542                 break;
5543         case STACK_R8:
5544                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5545                 ins->type = STACK_R8;
5546                 ins->inst_p0 = (void*)&r8_0;
5547                 ins->dreg = rvar->dreg;
5548                 MONO_ADD_INS (cfg->cbb, ins);
5549                 break;
5550         case STACK_VTYPE:
5551                 MONO_EMIT_NEW_VZERO (cfg, rvar->dreg, mono_class_from_mono_type (rtype));
5552                 break;
5553         default:
5554                 g_assert_not_reached ();
5555         }
5556 }
5557
5558 static int
5559 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
5560                 guchar *ip, guint real_offset, GList *dont_inline, gboolean inline_always)
5561 {
5562         MonoInst *ins, *rvar = NULL;
5563         MonoMethodHeader *cheader;
5564         MonoBasicBlock *ebblock, *sbblock;
5565         int i, costs;
5566         MonoMethod *prev_inlined_method;
5567         MonoInst **prev_locals, **prev_args;
5568         MonoType **prev_arg_types;
5569         guint prev_real_offset;
5570         GHashTable *prev_cbb_hash;
5571         MonoBasicBlock **prev_cil_offset_to_bb;
5572         MonoBasicBlock *prev_cbb;
5573         unsigned char* prev_cil_start;
5574         guint32 prev_cil_offset_to_bb_len;
5575         MonoMethod *prev_current_method;
5576         MonoGenericContext *prev_generic_context;
5577         gboolean ret_var_set, prev_ret_var_set, virtual = FALSE;
5578
5579         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
5580
5581 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5582         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
5583                 return 0;
5584 #endif
5585 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5586         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
5587                 return 0;
5588 #endif
5589
5590         if (cfg->verbose_level > 2)
5591                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
5592
5593         if (!cmethod->inline_info) {
5594                 cfg->stat_inlineable_methods++;
5595                 cmethod->inline_info = 1;
5596         }
5597
5598         /* allocate local variables */
5599         cheader = mono_method_get_header (cmethod);
5600
5601         if (cheader == NULL || mono_loader_get_last_error ()) {
5602                 MonoLoaderError *error = mono_loader_get_last_error ();
5603
5604                 if (cheader)
5605                         mono_metadata_free_mh (cheader);
5606                 if (inline_always && error)
5607                         mono_cfg_set_exception (cfg, error->exception_type);
5608
5609                 mono_loader_clear_error ();
5610                 return 0;
5611         }
5612
5613         /*Must verify before creating locals as it can cause the JIT to assert.*/
5614         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
5615                 mono_metadata_free_mh (cheader);
5616                 return 0;
5617         }
5618
5619         /* allocate space to store the return value */
5620         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
5621                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
5622         }
5623
5624         prev_locals = cfg->locals;
5625         cfg->locals = mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
5626         for (i = 0; i < cheader->num_locals; ++i)
5627                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
5628
5629         /* allocate start and end blocks */
5630         /* This is needed so if the inline is aborted, we can clean up */
5631         NEW_BBLOCK (cfg, sbblock);
5632         sbblock->real_offset = real_offset;
5633
5634         NEW_BBLOCK (cfg, ebblock);
5635         ebblock->block_num = cfg->num_bblocks++;
5636         ebblock->real_offset = real_offset;
5637
5638         prev_args = cfg->args;
5639         prev_arg_types = cfg->arg_types;
5640         prev_inlined_method = cfg->inlined_method;
5641         cfg->inlined_method = cmethod;
5642         cfg->ret_var_set = FALSE;
5643         cfg->inline_depth ++;
5644         prev_real_offset = cfg->real_offset;
5645         prev_cbb_hash = cfg->cbb_hash;
5646         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
5647         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
5648         prev_cil_start = cfg->cil_start;
5649         prev_cbb = cfg->cbb;
5650         prev_current_method = cfg->current_method;
5651         prev_generic_context = cfg->generic_context;
5652         prev_ret_var_set = cfg->ret_var_set;
5653
5654         if (*ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
5655                 virtual = TRUE;
5656
5657         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, dont_inline, sp, real_offset, virtual);
5658
5659         ret_var_set = cfg->ret_var_set;
5660
5661         cfg->inlined_method = prev_inlined_method;
5662         cfg->real_offset = prev_real_offset;
5663         cfg->cbb_hash = prev_cbb_hash;
5664         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
5665         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
5666         cfg->cil_start = prev_cil_start;
5667         cfg->locals = prev_locals;
5668         cfg->args = prev_args;
5669         cfg->arg_types = prev_arg_types;
5670         cfg->current_method = prev_current_method;
5671         cfg->generic_context = prev_generic_context;
5672         cfg->ret_var_set = prev_ret_var_set;
5673         cfg->inline_depth --;
5674
5675         if ((costs >= 0 && costs < 60) || inline_always) {
5676                 if (cfg->verbose_level > 2)
5677                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
5678
5679                 cfg->stat_inlined_methods++;
5680
5681                 /* always add some code to avoid block split failures */
5682                 MONO_INST_NEW (cfg, ins, OP_NOP);
5683                 MONO_ADD_INS (prev_cbb, ins);
5684
5685                 prev_cbb->next_bb = sbblock;
5686                 link_bblock (cfg, prev_cbb, sbblock);
5687
5688                 /*
5689                  * Get rid of the begin and end bblocks if possible to aid local
5690                  * optimizations.
5691                  */
5692                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
5693
5694                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
5695                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
5696
5697                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
5698                         MonoBasicBlock *prev = ebblock->in_bb [0];
5699                         mono_merge_basic_blocks (cfg, prev, ebblock);
5700                         cfg->cbb = prev;
5701                         if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
5702                                 mono_merge_basic_blocks (cfg, prev_cbb, prev);
5703                                 cfg->cbb = prev_cbb;
5704                         }
5705                 } else {
5706                         /*
5707                          * Its possible that the rvar is set in some prev bblock, but not in others.
5708                          * (#1835).
5709                          */
5710                         if (rvar) {
5711                                 MonoBasicBlock *bb;
5712
5713                                 for (i = 0; i < ebblock->in_count; ++i) {
5714                                         bb = ebblock->in_bb [i];
5715
5716                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
5717                                                 cfg->cbb = bb;
5718
5719                                                 emit_init_rvar (cfg, rvar, fsig->ret);
5720                                         }
5721                                 }
5722                         }
5723
5724                         cfg->cbb = ebblock;
5725                 }
5726
5727                 if (rvar) {
5728                         /*
5729                          * If the inlined method contains only a throw, then the ret var is not
5730                          * set, so set it to a dummy value.
5731                          */
5732                         if (!ret_var_set)
5733                                 emit_init_rvar (cfg, rvar, fsig->ret);
5734
5735                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
5736                         *sp++ = ins;
5737                 }
5738                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
5739                 return costs + 1;
5740         } else {
5741                 if (cfg->verbose_level > 2)
5742                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
5743                 cfg->exception_type = MONO_EXCEPTION_NONE;
5744                 mono_loader_clear_error ();
5745
5746                 /* This gets rid of the newly added bblocks */
5747                 cfg->cbb = prev_cbb;
5748         }
5749         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
5750         return 0;
5751 }
5752
5753 /*
5754  * Some of these comments may well be out-of-date.
5755  * Design decisions: we do a single pass over the IL code (and we do bblock
5756  * splitting/merging in the few cases when it's required: a back jump to an IL
5757  * address that was not already seen as bblock starting point).
5758  * Code is validated as we go (full verification is still better left to metadata/verify.c).
5759  * Complex operations are decomposed in simpler ones right away. We need to let the
5760  * arch-specific code peek and poke inside this process somehow (except when the
5761  * optimizations can take advantage of the full semantic info of coarse opcodes).
5762  * All the opcodes of the form opcode.s are 'normalized' to opcode.
5763  * MonoInst->opcode initially is the IL opcode or some simplification of that
5764  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
5765  * opcode with value bigger than OP_LAST.
5766  * At this point the IR can be handed over to an interpreter, a dumb code generator
5767  * or to the optimizing code generator that will translate it to SSA form.
5768  *
5769  * Profiling directed optimizations.
5770  * We may compile by default with few or no optimizations and instrument the code
5771  * or the user may indicate what methods to optimize the most either in a config file
5772  * or through repeated runs where the compiler applies offline the optimizations to
5773  * each method and then decides if it was worth it.
5774  */
5775
5776 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
5777 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
5778 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
5779 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
5780 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
5781 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
5782 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
5783 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) {cfg->exception_ptr = klass; LOAD_ERROR;}
5784
5785 /* offset from br.s -> br like opcodes */
5786 #define BIG_BRANCH_OFFSET 13
5787
5788 static gboolean
5789 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
5790 {
5791         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
5792
5793         return b == NULL || b == bb;
5794 }
5795
5796 static int
5797 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
5798 {
5799         unsigned char *ip = start;
5800         unsigned char *target;
5801         int i;
5802         guint cli_addr;
5803         MonoBasicBlock *bblock;
5804         const MonoOpcode *opcode;
5805
5806         while (ip < end) {
5807                 cli_addr = ip - start;
5808                 i = mono_opcode_value ((const guint8 **)&ip, end);
5809                 if (i < 0)
5810                         UNVERIFIED;
5811                 opcode = &mono_opcodes [i];
5812                 switch (opcode->argument) {
5813                 case MonoInlineNone:
5814                         ip++;
5815                         break;
5816                 case MonoInlineString:
5817                 case MonoInlineType:
5818                 case MonoInlineField:
5819                 case MonoInlineMethod:
5820                 case MonoInlineTok:
5821                 case MonoInlineSig:
5822                 case MonoShortInlineR:
5823                 case MonoInlineI:
5824                         ip += 5;
5825                         break;
5826                 case MonoInlineVar:
5827                         ip += 3;
5828                         break;
5829                 case MonoShortInlineVar:
5830                 case MonoShortInlineI:
5831                         ip += 2;
5832                         break;
5833                 case MonoShortInlineBrTarget:
5834                         target = start + cli_addr + 2 + (signed char)ip [1];
5835                         GET_BBLOCK (cfg, bblock, target);
5836                         ip += 2;
5837                         if (ip < end)
5838                                 GET_BBLOCK (cfg, bblock, ip);
5839                         break;
5840                 case MonoInlineBrTarget:
5841                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
5842                         GET_BBLOCK (cfg, bblock, target);
5843                         ip += 5;
5844                         if (ip < end)
5845                                 GET_BBLOCK (cfg, bblock, ip);
5846                         break;
5847                 case MonoInlineSwitch: {
5848                         guint32 n = read32 (ip + 1);
5849                         guint32 j;
5850                         ip += 5;
5851                         cli_addr += 5 + 4 * n;
5852                         target = start + cli_addr;
5853                         GET_BBLOCK (cfg, bblock, target);
5854
5855                         for (j = 0; j < n; ++j) {
5856                                 target = start + cli_addr + (gint32)read32 (ip);
5857                                 GET_BBLOCK (cfg, bblock, target);
5858                                 ip += 4;
5859                         }
5860                         break;
5861                 }
5862                 case MonoInlineR:
5863                 case MonoInlineI8:
5864                         ip += 9;
5865                         break;
5866                 default:
5867                         g_assert_not_reached ();
5868                 }
5869
5870                 if (i == CEE_THROW) {
5871                         unsigned char *bb_start = ip - 1;
5872
5873                         /* Find the start of the bblock containing the throw */
5874                         bblock = NULL;
5875                         while ((bb_start >= start) && !bblock) {
5876                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
5877                                 bb_start --;
5878                         }
5879                         if (bblock)
5880                                 bblock->out_of_line = 1;
5881                 }
5882         }
5883         return 0;
5884 unverified:
5885 exception_exit:
5886         *pos = ip;
5887         return 1;
5888 }
5889
5890 static inline MonoMethod *
5891 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5892 {
5893         MonoMethod *method;
5894
5895         if (m->wrapper_type != MONO_WRAPPER_NONE) {
5896                 method = mono_method_get_wrapper_data (m, token);
5897                 if (context)
5898                         method = mono_class_inflate_generic_method (method, context);
5899         } else {
5900                 method = mono_get_method_full (m->klass->image, token, klass, context);
5901         }
5902
5903         return method;
5904 }
5905
5906 static inline MonoMethod *
5907 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5908 {
5909         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context);
5910
5911         if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
5912                 return NULL;
5913
5914         return method;
5915 }
5916
5917 static inline MonoClass*
5918 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
5919 {
5920         MonoClass *klass;
5921
5922         if (method->wrapper_type != MONO_WRAPPER_NONE) {
5923                 klass = mono_method_get_wrapper_data (method, token);
5924                 if (context)
5925                         klass = mono_class_inflate_generic_class (klass, context);
5926         } else {
5927                 klass = mono_class_get_full (method->klass->image, token, context);
5928         }
5929         if (klass)
5930                 mono_class_init (klass);
5931         return klass;
5932 }
5933
5934 static inline MonoMethodSignature*
5935 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
5936 {
5937         MonoMethodSignature *fsig;
5938
5939         if (method->wrapper_type != MONO_WRAPPER_NONE) {
5940                 MonoError error;
5941
5942                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
5943                 if (context) {
5944                         fsig = mono_inflate_generic_signature (fsig, context, &error);
5945                         // FIXME:
5946                         g_assert (mono_error_ok (&error));
5947                 }
5948         } else {
5949                 fsig = mono_metadata_parse_signature (method->klass->image, token);
5950         }
5951         return fsig;
5952 }
5953
5954 /*
5955  * Returns TRUE if the JIT should abort inlining because "callee"
5956  * is influenced by security attributes.
5957  */
5958 static
5959 gboolean check_linkdemand (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
5960 {
5961         guint32 result;
5962
5963         if ((cfg->method != caller) && mono_security_method_has_declsec (callee)) {
5964                 return TRUE;
5965         }
5966
5967         result = mono_declsec_linkdemand (cfg->domain, caller, callee);
5968         if (result == MONO_JIT_SECURITY_OK)
5969                 return FALSE;
5970
5971         if (result == MONO_JIT_LINKDEMAND_ECMA) {
5972                 /* Generate code to throw a SecurityException before the actual call/link */
5973                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
5974                 MonoInst *args [2];
5975
5976                 NEW_ICONST (cfg, args [0], 4);
5977                 NEW_METHODCONST (cfg, args [1], caller);
5978                 mono_emit_method_call (cfg, secman->linkdemandsecurityexception, args, NULL);
5979         } else if (cfg->exception_type == MONO_EXCEPTION_NONE) {
5980                  /* don't hide previous results */
5981                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_SECURITY_LINKDEMAND);
5982                 cfg->exception_data = result;
5983                 return TRUE;
5984         }
5985
5986         return FALSE;
5987 }
5988
5989 static MonoMethod*
5990 throw_exception (void)
5991 {
5992         static MonoMethod *method = NULL;
5993
5994         if (!method) {
5995                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
5996                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
5997         }
5998         g_assert (method);
5999         return method;
6000 }
6001
6002 static void
6003 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6004 {
6005         MonoMethod *thrower = throw_exception ();
6006         MonoInst *args [1];
6007
6008         EMIT_NEW_PCONST (cfg, args [0], ex);
6009         mono_emit_method_call (cfg, thrower, args, NULL);
6010 }
6011
6012 /*
6013  * Return the original method is a wrapper is specified. We can only access
6014  * the custom attributes from the original method.
6015  */
6016 static MonoMethod*
6017 get_original_method (MonoMethod *method)
6018 {
6019         if (method->wrapper_type == MONO_WRAPPER_NONE)
6020                 return method;
6021
6022         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6023         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6024                 return NULL;
6025
6026         /* in other cases we need to find the original method */
6027         return mono_marshal_method_from_wrapper (method);
6028 }
6029
6030 static void
6031 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
6032                                           MonoBasicBlock *bblock, unsigned char *ip)
6033 {
6034         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6035         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6036         if (ex)
6037                 emit_throw_exception (cfg, ex);
6038 }
6039
6040 static void
6041 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
6042                                          MonoBasicBlock *bblock, unsigned char *ip)
6043 {
6044         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6045         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6046         if (ex)
6047                 emit_throw_exception (cfg, ex);
6048 }
6049
6050 /*
6051  * Check that the IL instructions at ip are the array initialization
6052  * sequence and return the pointer to the data and the size.
6053  */
6054 static const char*
6055 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6056 {
6057         /*
6058          * newarr[System.Int32]
6059          * dup
6060          * ldtoken field valuetype ...
6061          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6062          */
6063         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6064                 guint32 token = read32 (ip + 7);
6065                 guint32 field_token = read32 (ip + 2);
6066                 guint32 field_index = field_token & 0xffffff;
6067                 guint32 rva;
6068                 const char *data_ptr;
6069                 int size = 0;
6070                 MonoMethod *cmethod;
6071                 MonoClass *dummy_class;
6072                 MonoClassField *field = mono_field_from_token (method->klass->image, field_token, &dummy_class, NULL);
6073                 int dummy_align;
6074
6075                 if (!field)
6076                         return NULL;
6077
6078                 *out_field_token = field_token;
6079
6080                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6081                 if (!cmethod)
6082                         return NULL;
6083                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6084                         return NULL;
6085                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
6086                 case MONO_TYPE_BOOLEAN:
6087                 case MONO_TYPE_I1:
6088                 case MONO_TYPE_U1:
6089                         size = 1; break;
6090                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6091 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6092                 case MONO_TYPE_CHAR:
6093                 case MONO_TYPE_I2:
6094                 case MONO_TYPE_U2:
6095                         size = 2; break;
6096                 case MONO_TYPE_I4:
6097                 case MONO_TYPE_U4:
6098                 case MONO_TYPE_R4:
6099                         size = 4; break;
6100                 case MONO_TYPE_R8:
6101 #ifdef ARM_FPU_FPA
6102                         return NULL; /* stupid ARM FP swapped format */
6103 #endif
6104                 case MONO_TYPE_I8:
6105                 case MONO_TYPE_U8:
6106                         size = 8; break;
6107 #endif
6108                 default:
6109                         return NULL;
6110                 }
6111                 size *= len;
6112                 if (size > mono_type_size (field->type, &dummy_align))
6113                     return NULL;
6114                 *out_size = size;
6115                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6116                 if (!method->klass->image->dynamic) {
6117                         field_index = read32 (ip + 2) & 0xffffff;
6118                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6119                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6120                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6121                         /* for aot code we do the lookup on load */
6122                         if (aot && data_ptr)
6123                                 return GUINT_TO_POINTER (rva);
6124                 } else {
6125                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6126                         g_assert (!aot);
6127                         data_ptr = mono_field_get_data (field);
6128                 }
6129                 return data_ptr;
6130         }
6131         return NULL;
6132 }
6133
6134 static void
6135 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6136 {
6137         char *method_fname = mono_method_full_name (method, TRUE);
6138         char *method_code;
6139         MonoMethodHeader *header = mono_method_get_header (method);
6140
6141         if (header->code_size == 0)
6142                 method_code = g_strdup ("method body is empty.");
6143         else
6144                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6145         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
6146         cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
6147         g_free (method_fname);
6148         g_free (method_code);
6149         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6150 }
6151
6152 static void
6153 set_exception_object (MonoCompile *cfg, MonoException *exception)
6154 {
6155         mono_cfg_set_exception (cfg, MONO_EXCEPTION_OBJECT_SUPPLIED);
6156         MONO_GC_REGISTER_ROOT_SINGLE (cfg->exception_ptr);
6157         cfg->exception_ptr = exception;
6158 }
6159
6160 static void
6161 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6162 {
6163         MonoInst *ins;
6164         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6165         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6166                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6167                 /* Optimize reg-reg moves away */
6168                 /*
6169                  * Can't optimize other opcodes, since sp[0] might point to
6170                  * the last ins of a decomposed opcode.
6171                  */
6172                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6173         } else {
6174                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6175         }
6176 }
6177
6178 /*
6179  * ldloca inhibits many optimizations so try to get rid of it in common
6180  * cases.
6181  */
6182 static inline unsigned char *
6183 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6184 {
6185         int local, token;
6186         MonoClass *klass;
6187
6188         if (size == 1) {
6189                 local = ip [1];
6190                 ip += 2;
6191         } else {
6192                 local = read16 (ip + 2);
6193                 ip += 4;
6194         }
6195
6196         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6197                 gboolean skip = FALSE;
6198
6199                 /* From the INITOBJ case */
6200                 token = read32 (ip + 2);
6201                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6202                 CHECK_TYPELOAD (klass);
6203                 if (mini_type_is_reference (cfg, &klass->byval_arg)) {
6204                         MONO_EMIT_NEW_PCONST (cfg, cfg->locals [local]->dreg, NULL);
6205                 } else if (MONO_TYPE_ISSTRUCT (&klass->byval_arg)) {
6206                         MONO_EMIT_NEW_VZERO (cfg, cfg->locals [local]->dreg, klass);
6207                 } else {
6208                         skip = TRUE;
6209                 }
6210
6211                 if (!skip)
6212                         return ip + 6;
6213         }
6214 load_error:
6215         return NULL;
6216 }
6217
6218 static gboolean
6219 is_exception_class (MonoClass *class)
6220 {
6221         while (class) {
6222                 if (class == mono_defaults.exception_class)
6223                         return TRUE;
6224                 class = class->parent;
6225         }
6226         return FALSE;
6227 }
6228
6229 /*
6230  * is_jit_optimizer_disabled:
6231  *
6232  *   Determine whenever M's assembly has a DebuggableAttribute with the
6233  * IsJITOptimizerDisabled flag set.
6234  */
6235 static gboolean
6236 is_jit_optimizer_disabled (MonoMethod *m)
6237 {
6238         MonoAssembly *ass = m->klass->image->assembly;
6239         MonoCustomAttrInfo* attrs;
6240         static MonoClass *klass;
6241         int i;
6242         gboolean val = FALSE;
6243
6244         g_assert (ass);
6245         if (ass->jit_optimizer_disabled_inited)
6246                 return ass->jit_optimizer_disabled;
6247
6248         if (!klass)
6249                 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
6250         if (!klass) {
6251                 /* Linked away */
6252                 ass->jit_optimizer_disabled = FALSE;
6253                 mono_memory_barrier ();
6254                 ass->jit_optimizer_disabled_inited = TRUE;
6255                 return FALSE;
6256         }
6257
6258         attrs = mono_custom_attrs_from_assembly (ass);
6259         if (attrs) {
6260                 for (i = 0; i < attrs->num_attrs; ++i) {
6261                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6262                         const gchar *p;
6263                         int len;
6264                         MonoMethodSignature *sig;
6265
6266                         if (!attr->ctor || attr->ctor->klass != klass)
6267                                 continue;
6268                         /* Decode the attribute. See reflection.c */
6269                         len = attr->data_size;
6270                         p = (const char*)attr->data;
6271                         g_assert (read16 (p) == 0x0001);
6272                         p += 2;
6273
6274                         // FIXME: Support named parameters
6275                         sig = mono_method_signature (attr->ctor);
6276                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6277                                 continue;
6278                         /* Two boolean arguments */
6279                         p ++;
6280                         val = *p;
6281                 }
6282                 mono_custom_attrs_free (attrs);
6283         }
6284
6285         ass->jit_optimizer_disabled = val;
6286         mono_memory_barrier ();
6287         ass->jit_optimizer_disabled_inited = TRUE;
6288
6289         return val;
6290 }
6291
6292 static gboolean
6293 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig)
6294 {
6295         gboolean supported_tail_call;
6296         int i;
6297
6298 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6299         supported_tail_call = MONO_ARCH_USE_OP_TAIL_CALL (mono_method_signature (method), mono_method_signature (cmethod));
6300 #else
6301         supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
6302 #endif
6303
6304         for (i = 0; i < fsig->param_count; ++i) {
6305                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6306                         /* These can point to the current method's stack */
6307                         supported_tail_call = FALSE;
6308         }
6309         if (fsig->hasthis && cmethod->klass->valuetype)
6310                 /* this might point to the current method's stack */
6311                 supported_tail_call = FALSE;
6312         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6313                 supported_tail_call = FALSE;
6314         if (cfg->method->save_lmf)
6315                 supported_tail_call = FALSE;
6316         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6317                 supported_tail_call = FALSE;
6318
6319         /* Debugging support */
6320 #if 0
6321         if (supported_tail_call) {
6322                 if (!mono_debug_count ())
6323                         supported_tail_call = FALSE;
6324         }
6325 #endif
6326
6327         return supported_tail_call;
6328 }
6329
6330 /* the JIT intercepts ldflda instructions to the tlsdata field in ThreadLocal<T> and redirects
6331  * it to the thread local value based on the tls_offset field. Every other kind of access to
6332  * the field causes an assert.
6333  */
6334 static gboolean
6335 is_magic_tls_access (MonoClassField *field)
6336 {
6337         if (strcmp (field->name, "tlsdata"))
6338                 return FALSE;
6339         if (strcmp (field->parent->name, "ThreadLocal`1"))
6340                 return FALSE;
6341         return field->parent->image == mono_defaults.corlib;
6342 }
6343
6344 /* emits the code needed to access a managed tls var (like ThreadStatic)
6345  * with the value of the tls offset in offset_reg. thread_ins represents the MonoInternalThread
6346  * pointer for the current thread.
6347  * Returns the MonoInst* representing the address of the tls var.
6348  */
6349 static MonoInst*
6350 emit_managed_static_data_access (MonoCompile *cfg, MonoInst *thread_ins, int offset_reg)
6351 {
6352         MonoInst *addr;
6353         int static_data_reg, array_reg, dreg;
6354         int offset2_reg, idx_reg;
6355         // inlined access to the tls data
6356         // idx = (offset >> 24) - 1;
6357         // return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
6358         static_data_reg = alloc_ireg (cfg);
6359         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
6360         idx_reg = alloc_ireg (cfg);
6361         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
6362         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
6363         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
6364         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
6365         array_reg = alloc_ireg (cfg);
6366         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
6367         offset2_reg = alloc_ireg (cfg);
6368         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
6369         dreg = alloc_ireg (cfg);
6370         EMIT_NEW_BIALU (cfg, addr, OP_PADD, dreg, array_reg, offset2_reg);
6371         return addr;
6372 }
6373
6374 /*
6375  * redirect access to the tlsdata field to the tls var given by the tls_offset field.
6376  * this address is cached per-method in cached_tls_addr.
6377  */
6378 static MonoInst*
6379 create_magic_tls_access (MonoCompile *cfg, MonoClassField *tls_field, MonoInst **cached_tls_addr, MonoInst *thread_local)
6380 {
6381         MonoInst *load, *addr, *temp, *store, *thread_ins;
6382         MonoClassField *offset_field;
6383
6384         if (*cached_tls_addr) {
6385                 EMIT_NEW_TEMPLOAD (cfg, addr, (*cached_tls_addr)->inst_c0);
6386                 return addr;
6387         }
6388         thread_ins = mono_get_thread_intrinsic (cfg);
6389         offset_field = mono_class_get_field_from_name (tls_field->parent, "tls_offset");
6390
6391         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, offset_field->type, thread_local->dreg, offset_field->offset);
6392         if (thread_ins) {
6393                 MONO_ADD_INS (cfg->cbb, thread_ins);
6394         } else {
6395                 MonoMethod *thread_method;
6396                 thread_method = mono_class_get_method_from_name (mono_get_thread_class(), "CurrentInternalThread_internal", 0);
6397                 thread_ins = mono_emit_method_call (cfg, thread_method, NULL, NULL);
6398         }
6399         addr = emit_managed_static_data_access (cfg, thread_ins, load->dreg);
6400         addr->klass = mono_class_from_mono_type (tls_field->type);
6401         addr->type = STACK_MP;
6402         *cached_tls_addr = temp = mono_compile_create_var (cfg, type_from_stack_type (addr), OP_LOCAL);
6403         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, addr);
6404
6405         EMIT_NEW_TEMPLOAD (cfg, addr, temp->inst_c0);
6406         return addr;
6407 }
6408
6409 /*
6410  * mono_method_to_ir:
6411  *
6412  *   Translate the .net IL into linear IR.
6413  */
6414 int
6415 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
6416                    MonoInst *return_var, GList *dont_inline, MonoInst **inline_args,
6417                    guint inline_offset, gboolean is_virtual_call)
6418 {
6419         MonoError error;
6420         MonoInst *ins, **sp, **stack_start;
6421         MonoBasicBlock *bblock, *tblock = NULL, *init_localsbb = NULL;
6422         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
6423         MonoMethod *cmethod, *method_definition;
6424         MonoInst **arg_array;
6425         MonoMethodHeader *header;
6426         MonoImage *image;
6427         guint32 token, ins_flag;
6428         MonoClass *klass;
6429         MonoClass *constrained_call = NULL;
6430         unsigned char *ip, *end, *target, *err_pos;
6431         static double r8_0 = 0.0;
6432         MonoMethodSignature *sig;
6433         MonoGenericContext *generic_context = NULL;
6434         MonoGenericContainer *generic_container = NULL;
6435         MonoType **param_types;
6436         int i, n, start_new_bblock, dreg;
6437         int num_calls = 0, inline_costs = 0;
6438         int breakpoint_id = 0;
6439         guint num_args;
6440         MonoBoolean security, pinvoke;
6441         MonoSecurityManager* secman = NULL;
6442         MonoDeclSecurityActions actions;
6443         GSList *class_inits = NULL;
6444         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
6445         int context_used;
6446         gboolean init_locals, seq_points, skip_dead_blocks;
6447         gboolean disable_inline, sym_seq_points = FALSE;
6448         MonoInst *cached_tls_addr = NULL;
6449         MonoDebugMethodInfo *minfo;
6450         MonoBitSet *seq_point_locs = NULL;
6451         MonoBitSet *seq_point_set_locs = NULL;
6452
6453         disable_inline = is_jit_optimizer_disabled (method);
6454
6455         /* serialization and xdomain stuff may need access to private fields and methods */
6456         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
6457         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
6458         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
6459         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
6460         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
6461         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
6462
6463         dont_verify |= mono_security_smcs_hack_enabled ();
6464
6465         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
6466         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
6467         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
6468         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
6469         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
6470
6471         image = method->klass->image;
6472         header = mono_method_get_header (method);
6473         if (!header) {
6474                 MonoLoaderError *error;
6475
6476                 if ((error = mono_loader_get_last_error ())) {
6477                         mono_cfg_set_exception (cfg, error->exception_type);
6478                 } else {
6479                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
6480                         cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
6481                 }
6482                 goto exception_exit;
6483         }
6484         generic_container = mono_method_get_generic_container (method);
6485         sig = mono_method_signature (method);
6486         num_args = sig->hasthis + sig->param_count;
6487         ip = (unsigned char*)header->code;
6488         cfg->cil_start = ip;
6489         end = ip + header->code_size;
6490         cfg->stat_cil_code_size += header->code_size;
6491         init_locals = header->init_locals;
6492
6493         seq_points = cfg->gen_seq_points && cfg->method == method;
6494 #ifdef PLATFORM_ANDROID
6495         seq_points &= cfg->method->wrapper_type == MONO_WRAPPER_NONE;
6496 #endif
6497
6498         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
6499                 /* We could hit a seq point before attaching to the JIT (#8338) */
6500                 seq_points = FALSE;
6501         }
6502
6503         if (cfg->gen_seq_points && cfg->method == method) {
6504                 minfo = mono_debug_lookup_method (method);
6505                 if (minfo) {
6506                         int i, n_il_offsets;
6507                         int *il_offsets;
6508                         int *line_numbers;
6509
6510                         mono_debug_symfile_get_line_numbers_full (minfo, NULL, NULL, &n_il_offsets, &il_offsets, &line_numbers, NULL, NULL);
6511                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
6512                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
6513                         sym_seq_points = TRUE;
6514                         for (i = 0; i < n_il_offsets; ++i) {
6515                                 if (il_offsets [i] < header->code_size)
6516                                         mono_bitset_set_fast (seq_point_locs, il_offsets [i]);
6517                         }
6518                 }
6519         }
6520
6521         /*
6522          * Methods without init_locals set could cause asserts in various passes
6523          * (#497220).
6524          */
6525         init_locals = TRUE;
6526
6527         method_definition = method;
6528         while (method_definition->is_inflated) {
6529                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
6530                 method_definition = imethod->declaring;
6531         }
6532
6533         /* SkipVerification is not allowed if core-clr is enabled */
6534         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
6535                 dont_verify = TRUE;
6536                 dont_verify_stloc = TRUE;
6537         }
6538
6539         if (mono_debug_using_mono_debugger ())
6540                 cfg->keep_cil_nops = TRUE;
6541
6542         if (sig->is_inflated)
6543                 generic_context = mono_method_get_context (method);
6544         else if (generic_container)
6545                 generic_context = &generic_container->context;
6546         cfg->generic_context = generic_context;
6547
6548         if (!cfg->generic_sharing_context)
6549                 g_assert (!sig->has_type_parameters);
6550
6551         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
6552                 g_assert (method->is_inflated);
6553                 g_assert (mono_method_get_context (method)->method_inst);
6554         }
6555         if (method->is_inflated && mono_method_get_context (method)->method_inst)
6556                 g_assert (sig->generic_param_count);
6557
6558         if (cfg->method == method) {
6559                 cfg->real_offset = 0;
6560         } else {
6561                 cfg->real_offset = inline_offset;
6562         }
6563
6564         cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
6565         cfg->cil_offset_to_bb_len = header->code_size;
6566
6567         cfg->current_method = method;
6568
6569         if (cfg->verbose_level > 2)
6570                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
6571
6572         param_types = mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
6573         if (sig->hasthis)
6574                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
6575         for (n = 0; n < sig->param_count; ++n)
6576                 param_types [n + sig->hasthis] = sig->params [n];
6577         cfg->arg_types = param_types;
6578
6579         dont_inline = g_list_prepend (dont_inline, method);
6580         if (cfg->method == method) {
6581
6582                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
6583                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
6584
6585                 /* ENTRY BLOCK */
6586                 NEW_BBLOCK (cfg, start_bblock);
6587                 cfg->bb_entry = start_bblock;
6588                 start_bblock->cil_code = NULL;
6589                 start_bblock->cil_length = 0;
6590 #if defined(__native_client_codegen__)
6591                 MONO_INST_NEW (cfg, ins, OP_NACL_GC_SAFE_POINT);
6592                 ins->dreg = alloc_dreg (cfg, STACK_I4);
6593                 MONO_ADD_INS (start_bblock, ins);
6594 #endif
6595
6596                 /* EXIT BLOCK */
6597                 NEW_BBLOCK (cfg, end_bblock);
6598                 cfg->bb_exit = end_bblock;
6599                 end_bblock->cil_code = NULL;
6600                 end_bblock->cil_length = 0;
6601                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
6602                 g_assert (cfg->num_bblocks == 2);
6603
6604                 arg_array = cfg->args;
6605
6606                 if (header->num_clauses) {
6607                         cfg->spvars = g_hash_table_new (NULL, NULL);
6608                         cfg->exvars = g_hash_table_new (NULL, NULL);
6609                 }
6610                 /* handle exception clauses */
6611                 for (i = 0; i < header->num_clauses; ++i) {
6612                         MonoBasicBlock *try_bb;
6613                         MonoExceptionClause *clause = &header->clauses [i];
6614                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
6615                         try_bb->real_offset = clause->try_offset;
6616                         try_bb->try_start = TRUE;
6617                         try_bb->region = ((i + 1) << 8) | clause->flags;
6618                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
6619                         tblock->real_offset = clause->handler_offset;
6620                         tblock->flags |= BB_EXCEPTION_HANDLER;
6621
6622                         link_bblock (cfg, try_bb, tblock);
6623
6624                         if (*(ip + clause->handler_offset) == CEE_POP)
6625                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
6626
6627                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
6628                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
6629                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
6630                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
6631                                 MONO_ADD_INS (tblock, ins);
6632
6633                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY) {
6634                                         /* finally clauses already have a seq point */
6635                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
6636                                         MONO_ADD_INS (tblock, ins);
6637                                 }
6638
6639                                 /* todo: is a fault block unsafe to optimize? */
6640                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
6641                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
6642                         }
6643
6644
6645                         /*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);
6646                           while (p < end) {
6647                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
6648                           }*/
6649                         /* catch and filter blocks get the exception object on the stack */
6650                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
6651                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
6652                                 MonoInst *dummy_use;
6653
6654                                 /* mostly like handle_stack_args (), but just sets the input args */
6655                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
6656                                 tblock->in_scount = 1;
6657                                 tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
6658                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
6659
6660                                 /*
6661                                  * Add a dummy use for the exvar so its liveness info will be
6662                                  * correct.
6663                                  */
6664                                 cfg->cbb = tblock;
6665                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
6666
6667                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
6668                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
6669                                         tblock->flags |= BB_EXCEPTION_HANDLER;
6670                                         tblock->real_offset = clause->data.filter_offset;
6671                                         tblock->in_scount = 1;
6672                                         tblock->in_stack = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
6673                                         /* The filter block shares the exvar with the handler block */
6674                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
6675                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
6676                                         MONO_ADD_INS (tblock, ins);
6677                                 }
6678                         }
6679
6680                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
6681                                         clause->data.catch_class &&
6682                                         cfg->generic_sharing_context &&
6683                                         mono_class_check_context_used (clause->data.catch_class)) {
6684                                 /*
6685                                  * In shared generic code with catch
6686                                  * clauses containing type variables
6687                                  * the exception handling code has to
6688                                  * be able to get to the rgctx.
6689                                  * Therefore we have to make sure that
6690                                  * the vtable/mrgctx argument (for
6691                                  * static or generic methods) or the
6692                                  * "this" argument (for non-static
6693                                  * methods) are live.
6694                                  */
6695                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
6696                                                 mini_method_get_context (method)->method_inst ||
6697                                                 method->klass->valuetype) {
6698                                         mono_get_vtable_var (cfg);
6699                                 } else {
6700                                         MonoInst *dummy_use;
6701
6702                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
6703                                 }
6704                         }
6705                 }
6706         } else {
6707                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
6708                 cfg->cbb = start_bblock;
6709                 cfg->args = arg_array;
6710                 mono_save_args (cfg, sig, inline_args);
6711         }
6712
6713         /* FIRST CODE BLOCK */
6714         NEW_BBLOCK (cfg, bblock);
6715         bblock->cil_code = ip;
6716         cfg->cbb = bblock;
6717         cfg->ip = ip;
6718
6719         ADD_BBLOCK (cfg, bblock);
6720
6721         if (cfg->method == method) {
6722                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
6723                 if (breakpoint_id && (mono_debug_format != MONO_DEBUG_FORMAT_DEBUGGER)) {
6724                         MONO_INST_NEW (cfg, ins, OP_BREAK);
6725                         MONO_ADD_INS (bblock, ins);
6726                 }
6727         }
6728
6729         if (mono_security_cas_enabled ())
6730                 secman = mono_security_manager_get_methods ();
6731
6732         security = (secman && mono_security_method_has_declsec (method));
6733         /* at this point having security doesn't mean we have any code to generate */
6734         if (security && (cfg->method == method)) {
6735                 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
6736                  * And we do not want to enter the next section (with allocation) if we
6737                  * have nothing to generate */
6738                 security = mono_declsec_get_demands (method, &actions);
6739         }
6740
6741         /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
6742         pinvoke = (secman && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE));
6743         if (pinvoke) {
6744                 MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
6745                 if (wrapped && (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
6746                         MonoCustomAttrInfo* custom = mono_custom_attrs_from_method (wrapped);
6747
6748                         /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
6749                         if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
6750                                 pinvoke = FALSE;
6751                         }
6752                         if (custom)
6753                                 mono_custom_attrs_free (custom);
6754
6755                         if (pinvoke) {
6756                                 custom = mono_custom_attrs_from_class (wrapped->klass);
6757                                 if (custom && mono_custom_attrs_has_attr (custom, secman->suppressunmanagedcodesecurity)) {
6758                                         pinvoke = FALSE;
6759                                 }
6760                                 if (custom)
6761                                         mono_custom_attrs_free (custom);
6762                         }
6763                 } else {
6764                         /* not a P/Invoke after all */
6765                         pinvoke = FALSE;
6766                 }
6767         }
6768
6769         if ((init_locals || (cfg->method == method && (cfg->opt & MONO_OPT_SHARED))) || cfg->compile_aot || security || pinvoke) {
6770                 /* we use a separate basic block for the initialization code */
6771                 NEW_BBLOCK (cfg, init_localsbb);
6772                 cfg->bb_init = init_localsbb;
6773                 init_localsbb->real_offset = cfg->real_offset;
6774                 start_bblock->next_bb = init_localsbb;
6775                 init_localsbb->next_bb = bblock;
6776                 link_bblock (cfg, start_bblock, init_localsbb);
6777                 link_bblock (cfg, init_localsbb, bblock);
6778
6779                 cfg->cbb = init_localsbb;
6780         } else {
6781                 start_bblock->next_bb = bblock;
6782                 link_bblock (cfg, start_bblock, bblock);
6783         }
6784
6785         if (cfg->gsharedvt && cfg->method == method) {
6786                 MonoGSharedVtMethodInfo *info;
6787                 MonoInst *var, *locals_var;
6788                 int dreg;
6789
6790                 info = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
6791                 info->method = cfg->method;
6792                 // FIXME: Free this
6793                 info->entries = g_ptr_array_new ();
6794                 cfg->gsharedvt_info = info;
6795
6796                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
6797                 /* prevent it from being register allocated */
6798                 //var->flags |= MONO_INST_INDIRECT;
6799                 cfg->gsharedvt_info_var = var;
6800
6801                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
6802                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
6803
6804                 /* Allocate locals */
6805                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
6806                 /* prevent it from being register allocated */
6807                 //locals_var->flags |= MONO_INST_INDIRECT;
6808                 cfg->gsharedvt_locals_var = locals_var;
6809
6810                 dreg = alloc_ireg (cfg);
6811                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, G_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
6812
6813                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
6814                 ins->dreg = locals_var->dreg;
6815                 ins->sreg1 = dreg;
6816                 MONO_ADD_INS (cfg->cbb, ins);
6817                 cfg->gsharedvt_locals_var_ins = ins;
6818
6819                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
6820                 /*
6821                 if (init_locals)
6822                         ins->flags |= MONO_INST_INIT;
6823                 */
6824         }
6825
6826         /* at this point we know, if security is TRUE, that some code needs to be generated */
6827         if (security && (cfg->method == method)) {
6828                 MonoInst *args [2];
6829
6830                 cfg->stat_cas_demand_generation++;
6831
6832                 if (actions.demand.blob) {
6833                         /* Add code for SecurityAction.Demand */
6834                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demand);
6835                         EMIT_NEW_ICONST (cfg, args [1], actions.demand.size);
6836                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
6837                         mono_emit_method_call (cfg, secman->demand, args, NULL);
6838                 }
6839                 if (actions.noncasdemand.blob) {
6840                         /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
6841                         /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
6842                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.noncasdemand);
6843                         EMIT_NEW_ICONST (cfg, args [1], actions.noncasdemand.size);
6844                         /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
6845                         mono_emit_method_call (cfg, secman->demand, args, NULL);
6846                 }
6847                 if (actions.demandchoice.blob) {
6848                         /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
6849                         EMIT_NEW_DECLSECCONST (cfg, args[0], image, actions.demandchoice);
6850                         EMIT_NEW_ICONST (cfg, args [1], actions.demandchoice.size);
6851                         /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
6852                         mono_emit_method_call (cfg, secman->demandchoice, args, NULL);
6853                 }
6854         }
6855
6856         /* we must Demand SecurityPermission.Unmanaged before p/invoking */
6857         if (pinvoke) {
6858                 mono_emit_method_call (cfg, secman->demandunmanaged, NULL, NULL);
6859         }
6860
6861         if (mono_security_core_clr_enabled ()) {
6862                 /* check if this is native code, e.g. an icall or a p/invoke */
6863                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
6864                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
6865                         if (wrapped) {
6866                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
6867                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
6868
6869                                 /* if this ia a native call then it can only be JITted from platform code */
6870                                 if ((icall || pinvk) && method->klass && method->klass->image) {
6871                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
6872                                                 MonoException *ex = icall ? mono_get_exception_security () :
6873                                                         mono_get_exception_method_access ();
6874                                                 emit_throw_exception (cfg, ex);
6875                                         }
6876                                 }
6877                         }
6878                 }
6879         }
6880
6881         if (header->code_size == 0)
6882                 UNVERIFIED;
6883
6884         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
6885                 ip = err_pos;
6886                 UNVERIFIED;
6887         }
6888
6889         if (cfg->method == method)
6890                 mono_debug_init_method (cfg, bblock, breakpoint_id);
6891
6892         for (n = 0; n < header->num_locals; ++n) {
6893                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
6894                         UNVERIFIED;
6895         }
6896         class_inits = NULL;
6897
6898         /* We force the vtable variable here for all shared methods
6899            for the possibility that they might show up in a stack
6900            trace where their exact instantiation is needed. */
6901         if (cfg->generic_sharing_context && method == cfg->method) {
6902                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
6903                                 mini_method_get_context (method)->method_inst ||
6904                                 method->klass->valuetype) {
6905                         mono_get_vtable_var (cfg);
6906                 } else {
6907                         /* FIXME: Is there a better way to do this?
6908                            We need the variable live for the duration
6909                            of the whole method. */
6910                         cfg->args [0]->flags |= MONO_INST_INDIRECT;
6911                 }
6912         }
6913
6914         /* add a check for this != NULL to inlined methods */
6915         if (is_virtual_call) {
6916                 MonoInst *arg_ins;
6917
6918                 NEW_ARGLOAD (cfg, arg_ins, 0);
6919                 MONO_ADD_INS (cfg->cbb, arg_ins);
6920                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
6921         }
6922
6923         skip_dead_blocks = !dont_verify;
6924         if (skip_dead_blocks) {
6925                 original_bb = bb = mono_basic_block_split (method, &error);
6926                 if (!mono_error_ok (&error)) {
6927                         mono_error_cleanup (&error);
6928                         UNVERIFIED;
6929                 }
6930                 g_assert (bb);
6931         }
6932
6933         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
6934         stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
6935
6936         ins_flag = 0;
6937         start_new_bblock = 0;
6938         cfg->cbb = bblock;
6939         while (ip < end) {
6940                 if (cfg->method == method)
6941                         cfg->real_offset = ip - header->code;
6942                 else
6943                         cfg->real_offset = inline_offset;
6944                 cfg->ip = ip;
6945
6946                 context_used = 0;
6947
6948                 if (start_new_bblock) {
6949                         bblock->cil_length = ip - bblock->cil_code;
6950                         if (start_new_bblock == 2) {
6951                                 g_assert (ip == tblock->cil_code);
6952                         } else {
6953                                 GET_BBLOCK (cfg, tblock, ip);
6954                         }
6955                         bblock->next_bb = tblock;
6956                         bblock = tblock;
6957                         cfg->cbb = bblock;
6958                         start_new_bblock = 0;
6959                         for (i = 0; i < bblock->in_scount; ++i) {
6960                                 if (cfg->verbose_level > 3)
6961                                         printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
6962                                 EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
6963                                 *sp++ = ins;
6964                         }
6965                         if (class_inits)
6966                                 g_slist_free (class_inits);
6967                         class_inits = NULL;
6968                 } else {
6969                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != bblock)) {
6970                                 link_bblock (cfg, bblock, tblock);
6971                                 if (sp != stack_start) {
6972                                         handle_stack_args (cfg, stack_start, sp - stack_start);
6973                                         sp = stack_start;
6974                                         CHECK_UNVERIFIABLE (cfg);
6975                                 }
6976                                 bblock->next_bb = tblock;
6977                                 bblock = tblock;
6978                                 cfg->cbb = bblock;
6979                                 for (i = 0; i < bblock->in_scount; ++i) {
6980                                         if (cfg->verbose_level > 3)
6981                                                 printf ("loading %d from temp %d\n", i, (int)bblock->in_stack [i]->inst_c0);
6982                                         EMIT_NEW_TEMPLOAD (cfg, ins, bblock->in_stack [i]->inst_c0);
6983                                         *sp++ = ins;
6984                                 }
6985                                 g_slist_free (class_inits);
6986                                 class_inits = NULL;
6987                         }
6988                 }
6989
6990                 if (skip_dead_blocks) {
6991                         int ip_offset = ip - header->code;
6992
6993                         if (ip_offset == bb->end)
6994                                 bb = bb->next;
6995
6996                         if (bb->dead) {
6997                                 int op_size = mono_opcode_size (ip, end);
6998                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
6999
7000                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7001
7002                                 if (ip_offset + op_size == bb->end) {
7003                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7004                                         MONO_ADD_INS (bblock, ins);
7005                                         start_new_bblock = 1;
7006                                 }
7007
7008                                 ip += op_size;
7009                                 continue;
7010                         }
7011                 }
7012                 /*
7013                  * Sequence points are points where the debugger can place a breakpoint.
7014                  * Currently, we generate these automatically at points where the IL
7015                  * stack is empty.
7016                  */
7017                 if (seq_points && ((sp == stack_start) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7018                         /*
7019                          * Make methods interruptable at the beginning, and at the targets of
7020                          * backward branches.
7021                          * Also, do this at the start of every bblock in methods with clauses too,
7022                          * to be able to handle instructions with inprecise control flow like
7023                          * throw/endfinally.
7024                          * Backward branches are handled at the end of method-to-ir ().
7025                          */
7026                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7027
7028                         /* Avoid sequence points on empty IL like .volatile */
7029                         // FIXME: Enable this
7030                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7031                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7032                         MONO_ADD_INS (cfg->cbb, ins);
7033
7034                         if (sym_seq_points)
7035                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7036                 }
7037
7038                 bblock->real_offset = cfg->real_offset;
7039
7040                 if ((cfg->method == method) && cfg->coverage_info) {
7041                         guint32 cil_offset = ip - header->code;
7042                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7043
7044                         /* TODO: Use an increment here */
7045 #if defined(TARGET_X86)
7046                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
7047                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
7048                         ins->inst_imm = 1;
7049                         MONO_ADD_INS (cfg->cbb, ins);
7050 #else
7051                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
7052                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7053 #endif
7054                 }
7055
7056                 if (cfg->verbose_level > 3)
7057                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7058
7059                 switch (*ip) {
7060                 case CEE_NOP:
7061                         if (seq_points && !sym_seq_points && sp != stack_start) {
7062                                 /*
7063                                  * The C# compiler uses these nops to notify the JIT that it should
7064                                  * insert seq points.
7065                                  */
7066                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7067                                 MONO_ADD_INS (cfg->cbb, ins);
7068                         }
7069                         if (cfg->keep_cil_nops)
7070                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7071                         else
7072                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7073                         ip++;
7074                         MONO_ADD_INS (bblock, ins);
7075                         break;
7076                 case CEE_BREAK:
7077                         if (should_insert_brekpoint (cfg->method)) {
7078                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7079                         } else {
7080                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7081                         }
7082                         ip++;
7083                         MONO_ADD_INS (bblock, ins);
7084                         break;
7085                 case CEE_LDARG_0:
7086                 case CEE_LDARG_1:
7087                 case CEE_LDARG_2:
7088                 case CEE_LDARG_3:
7089                         CHECK_STACK_OVF (1);
7090                         n = (*ip)-CEE_LDARG_0;
7091                         CHECK_ARG (n);
7092                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7093                         ip++;
7094                         *sp++ = ins;
7095                         break;
7096                 case CEE_LDLOC_0:
7097                 case CEE_LDLOC_1:
7098                 case CEE_LDLOC_2:
7099                 case CEE_LDLOC_3:
7100                         CHECK_STACK_OVF (1);
7101                         n = (*ip)-CEE_LDLOC_0;
7102                         CHECK_LOCAL (n);
7103                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7104                         ip++;
7105                         *sp++ = ins;
7106                         break;
7107                 case CEE_STLOC_0:
7108                 case CEE_STLOC_1:
7109                 case CEE_STLOC_2:
7110                 case CEE_STLOC_3: {
7111                         CHECK_STACK (1);
7112                         n = (*ip)-CEE_STLOC_0;
7113                         CHECK_LOCAL (n);
7114                         --sp;
7115                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7116                                 UNVERIFIED;
7117                         emit_stloc_ir (cfg, sp, header, n);
7118                         ++ip;
7119                         inline_costs += 1;
7120                         break;
7121                         }
7122                 case CEE_LDARG_S:
7123                         CHECK_OPSIZE (2);
7124                         CHECK_STACK_OVF (1);
7125                         n = ip [1];
7126                         CHECK_ARG (n);
7127                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7128                         *sp++ = ins;
7129                         ip += 2;
7130                         break;
7131                 case CEE_LDARGA_S:
7132                         CHECK_OPSIZE (2);
7133                         CHECK_STACK_OVF (1);
7134                         n = ip [1];
7135                         CHECK_ARG (n);
7136                         NEW_ARGLOADA (cfg, ins, n);
7137                         MONO_ADD_INS (cfg->cbb, ins);
7138                         *sp++ = ins;
7139                         ip += 2;
7140                         break;
7141                 case CEE_STARG_S:
7142                         CHECK_OPSIZE (2);
7143                         CHECK_STACK (1);
7144                         --sp;
7145                         n = ip [1];
7146                         CHECK_ARG (n);
7147                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7148                                 UNVERIFIED;
7149                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7150                         ip += 2;
7151                         break;
7152                 case CEE_LDLOC_S:
7153                         CHECK_OPSIZE (2);
7154                         CHECK_STACK_OVF (1);
7155                         n = ip [1];
7156                         CHECK_LOCAL (n);
7157                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7158                         *sp++ = ins;
7159                         ip += 2;
7160                         break;
7161                 case CEE_LDLOCA_S: {
7162                         unsigned char *tmp_ip;
7163                         CHECK_OPSIZE (2);
7164                         CHECK_STACK_OVF (1);
7165                         CHECK_LOCAL (ip [1]);
7166
7167                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7168                                 ip = tmp_ip;
7169                                 inline_costs += 1;
7170                                 break;
7171                         }
7172
7173                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7174                         *sp++ = ins;
7175                         ip += 2;
7176                         break;
7177                 }
7178                 case CEE_STLOC_S:
7179                         CHECK_OPSIZE (2);
7180                         CHECK_STACK (1);
7181                         --sp;
7182                         CHECK_LOCAL (ip [1]);
7183                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7184                                 UNVERIFIED;
7185                         emit_stloc_ir (cfg, sp, header, ip [1]);
7186                         ip += 2;
7187                         inline_costs += 1;
7188                         break;
7189                 case CEE_LDNULL:
7190                         CHECK_STACK_OVF (1);
7191                         EMIT_NEW_PCONST (cfg, ins, NULL);
7192                         ins->type = STACK_OBJ;
7193                         ++ip;
7194                         *sp++ = ins;
7195                         break;
7196                 case CEE_LDC_I4_M1:
7197                         CHECK_STACK_OVF (1);
7198                         EMIT_NEW_ICONST (cfg, ins, -1);
7199                         ++ip;
7200                         *sp++ = ins;
7201                         break;
7202                 case CEE_LDC_I4_0:
7203                 case CEE_LDC_I4_1:
7204                 case CEE_LDC_I4_2:
7205                 case CEE_LDC_I4_3:
7206                 case CEE_LDC_I4_4:
7207                 case CEE_LDC_I4_5:
7208                 case CEE_LDC_I4_6:
7209                 case CEE_LDC_I4_7:
7210                 case CEE_LDC_I4_8:
7211                         CHECK_STACK_OVF (1);
7212                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7213                         ++ip;
7214                         *sp++ = ins;
7215                         break;
7216                 case CEE_LDC_I4_S:
7217                         CHECK_OPSIZE (2);
7218                         CHECK_STACK_OVF (1);
7219                         ++ip;
7220                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7221                         ++ip;
7222                         *sp++ = ins;
7223                         break;
7224                 case CEE_LDC_I4:
7225                         CHECK_OPSIZE (5);
7226                         CHECK_STACK_OVF (1);
7227                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7228                         ip += 5;
7229                         *sp++ = ins;
7230                         break;
7231                 case CEE_LDC_I8:
7232                         CHECK_OPSIZE (9);
7233                         CHECK_STACK_OVF (1);
7234                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7235                         ins->type = STACK_I8;
7236                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7237                         ++ip;
7238                         ins->inst_l = (gint64)read64 (ip);
7239                         MONO_ADD_INS (bblock, ins);
7240                         ip += 8;
7241                         *sp++ = ins;
7242                         break;
7243                 case CEE_LDC_R4: {
7244                         float *f;
7245                         gboolean use_aotconst = FALSE;
7246
7247 #ifdef TARGET_POWERPC
7248                         /* FIXME: Clean this up */
7249                         if (cfg->compile_aot)
7250                                 use_aotconst = TRUE;
7251 #endif
7252
7253                         /* FIXME: we should really allocate this only late in the compilation process */
7254                         f = mono_domain_alloc (cfg->domain, sizeof (float));
7255                         CHECK_OPSIZE (5);
7256                         CHECK_STACK_OVF (1);
7257
7258                         if (use_aotconst) {
7259                                 MonoInst *cons;
7260                                 int dreg;
7261
7262                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7263
7264                                 dreg = alloc_freg (cfg);
7265                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7266                                 ins->type = STACK_R8;
7267                         } else {
7268                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7269                                 ins->type = STACK_R8;
7270                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7271                                 ins->inst_p0 = f;
7272                                 MONO_ADD_INS (bblock, ins);
7273                         }
7274                         ++ip;
7275                         readr4 (ip, f);
7276                         ip += 4;
7277                         *sp++ = ins;
7278                         break;
7279                 }
7280                 case CEE_LDC_R8: {
7281                         double *d;
7282                         gboolean use_aotconst = FALSE;
7283
7284 #ifdef TARGET_POWERPC
7285                         /* FIXME: Clean this up */
7286                         if (cfg->compile_aot)
7287                                 use_aotconst = TRUE;
7288 #endif
7289
7290                         /* FIXME: we should really allocate this only late in the compilation process */
7291                         d = mono_domain_alloc (cfg->domain, sizeof (double));
7292                         CHECK_OPSIZE (9);
7293                         CHECK_STACK_OVF (1);
7294
7295                         if (use_aotconst) {
7296                                 MonoInst *cons;
7297                                 int dreg;
7298
7299                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7300
7301                                 dreg = alloc_freg (cfg);
7302                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7303                                 ins->type = STACK_R8;
7304                         } else {
7305                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7306                                 ins->type = STACK_R8;
7307                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7308                                 ins->inst_p0 = d;
7309                                 MONO_ADD_INS (bblock, ins);
7310                         }
7311                         ++ip;
7312                         readr8 (ip, d);
7313                         ip += 8;
7314                         *sp++ = ins;
7315                         break;
7316                 }
7317                 case CEE_DUP: {
7318                         MonoInst *temp, *store;
7319                         CHECK_STACK (1);
7320                         CHECK_STACK_OVF (1);
7321                         sp--;
7322                         ins = *sp;
7323
7324                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
7325                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
7326
7327                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7328                         *sp++ = ins;
7329
7330                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7331                         *sp++ = ins;
7332
7333                         ++ip;
7334                         inline_costs += 2;
7335                         break;
7336                 }
7337                 case CEE_POP:
7338                         CHECK_STACK (1);
7339                         ip++;
7340                         --sp;
7341
7342 #ifdef TARGET_X86
7343                         if (sp [0]->type == STACK_R8)
7344                                 /* we need to pop the value from the x86 FP stack */
7345                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
7346 #endif
7347                         break;
7348                 case CEE_JMP: {
7349                         MonoCallInst *call;
7350
7351                         INLINE_FAILURE ("jmp");
7352                         GSHAREDVT_FAILURE (*ip);
7353
7354                         CHECK_OPSIZE (5);
7355                         if (stack_start != sp)
7356                                 UNVERIFIED;
7357                         token = read32 (ip + 1);
7358                         /* FIXME: check the signature matches */
7359                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
7360
7361                         if (!cmethod || mono_loader_get_last_error ())
7362                                 LOAD_ERROR;
7363
7364                         if (cfg->generic_sharing_context && mono_method_check_context_used (cmethod))
7365                                 GENERIC_SHARING_FAILURE (CEE_JMP);
7366
7367                         if (mono_security_cas_enabled ())
7368                                 CHECK_CFG_EXCEPTION;
7369
7370 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
7371                         {
7372                                 MonoMethodSignature *fsig = mono_method_signature (cmethod);
7373                                 int i, n;
7374
7375                                 /* Handle tail calls similarly to calls */
7376                                 n = fsig->param_count + fsig->hasthis;
7377
7378                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
7379                                 call->method = cmethod;
7380                                 call->tail_call = TRUE;
7381                                 call->signature = mono_method_signature (cmethod);
7382                                 call->args = mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
7383                                 call->inst.inst_p0 = cmethod;
7384                                 for (i = 0; i < n; ++i)
7385                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
7386
7387                                 mono_arch_emit_call (cfg, call);
7388                                 MONO_ADD_INS (bblock, (MonoInst*)call);
7389                         }
7390 #else
7391                         for (i = 0; i < num_args; ++i)
7392                                 /* Prevent arguments from being optimized away */
7393                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
7394
7395                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
7396                         ins = (MonoInst*)call;
7397                         ins->inst_p0 = cmethod;
7398                         MONO_ADD_INS (bblock, ins);
7399 #endif
7400
7401                         ip += 5;
7402                         start_new_bblock = 1;
7403                         break;
7404                 }
7405                 case CEE_CALLI:
7406                 case CEE_CALL:
7407                 case CEE_CALLVIRT: {
7408                         MonoInst *addr = NULL;
7409                         MonoMethodSignature *fsig = NULL;
7410                         int array_rank = 0;
7411                         int virtual = *ip == CEE_CALLVIRT;
7412                         int calli = *ip == CEE_CALLI;
7413                         gboolean pass_imt_from_rgctx = FALSE;
7414                         MonoInst *imt_arg = NULL;
7415                         MonoInst *keep_this_alive = NULL;
7416                         gboolean pass_vtable = FALSE;
7417                         gboolean pass_mrgctx = FALSE;
7418                         MonoInst *vtable_arg = NULL;
7419                         gboolean check_this = FALSE;
7420                         gboolean supported_tail_call = FALSE;
7421                         gboolean tail_call = FALSE;
7422                         gboolean need_seq_point = FALSE;
7423                         guint32 call_opcode = *ip;
7424                         gboolean emit_widen = TRUE;
7425                         gboolean push_res = TRUE;
7426                         gboolean skip_ret = FALSE;
7427                         gboolean delegate_invoke = FALSE;
7428
7429                         CHECK_OPSIZE (5);
7430                         token = read32 (ip + 1);
7431
7432                         ins = NULL;
7433
7434                         if (calli) {
7435                                 //GSHAREDVT_FAILURE (*ip);
7436                                 cmethod = NULL;
7437                                 CHECK_STACK (1);
7438                                 --sp;
7439                                 addr = *sp;
7440                                 fsig = mini_get_signature (method, token, generic_context);
7441                                 n = fsig->param_count + fsig->hasthis;
7442
7443                                 if (method->dynamic && fsig->pinvoke) {
7444                                         MonoInst *args [3];
7445
7446                                         /*
7447                                          * This is a call through a function pointer using a pinvoke
7448                                          * signature. Have to create a wrapper and call that instead.
7449                                          * FIXME: This is very slow, need to create a wrapper at JIT time
7450                                          * instead based on the signature.
7451                                          */
7452                                         EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
7453                                         EMIT_NEW_PCONST (cfg, args [1], fsig);
7454                                         args [2] = addr;
7455                                         addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
7456                                 }
7457                         } else {
7458                                 MonoMethod *cil_method;
7459
7460                                 cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
7461                                 cil_method = cmethod;
7462
7463                                 if (constrained_call) {
7464                                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7465                                                 if (cfg->verbose_level > 2)
7466                                                         printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_call));
7467                                                 if (!((constrained_call->byval_arg.type == MONO_TYPE_VAR ||
7468                                                            constrained_call->byval_arg.type == MONO_TYPE_MVAR) &&
7469                                                           cfg->generic_sharing_context)) {
7470                                                         cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_call, generic_context);
7471                                                 }
7472                                         } else {
7473                                                 if (cfg->verbose_level > 2)
7474                                                         printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_call));
7475
7476                                                 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
7477                                                         /*
7478                                                          * This is needed since get_method_constrained can't find
7479                                                          * the method in klass representing a type var.
7480                                                          * The type var is guaranteed to be a reference type in this
7481                                                          * case.
7482                                                          */
7483                                                         if (!mini_is_gsharedvt_klass (cfg, constrained_call))
7484                                                                 g_assert (!cmethod->klass->valuetype);
7485                                                 } else {
7486                                                         cmethod = mono_get_method_constrained (image, token, constrained_call, generic_context, &cil_method);
7487                                                 }
7488                                         }
7489                                 }
7490
7491                                 if (!cmethod || mono_loader_get_last_error ())
7492                                         LOAD_ERROR;
7493                                 if (!dont_verify && !cfg->skip_visibility) {
7494                                         MonoMethod *target_method = cil_method;
7495                                         if (method->is_inflated) {
7496                                                 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
7497                                         }
7498                                         if (!mono_method_can_access_method (method_definition, target_method) &&
7499                                                 !mono_method_can_access_method (method, cil_method))
7500                                                 METHOD_ACCESS_FAILURE;
7501                                 }
7502
7503                                 if (mono_security_core_clr_enabled ())
7504                                         ensure_method_is_allowed_to_call_method (cfg, method, cil_method, bblock, ip);
7505
7506                                 if (!virtual && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
7507                                         /* MS.NET seems to silently convert this to a callvirt */
7508                                         virtual = 1;
7509
7510                                 {
7511                                         /*
7512                                          * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
7513                                          * converts to a callvirt.
7514                                          *
7515                                          * tests/bug-515884.il is an example of this behavior
7516                                          */
7517                                         const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
7518                                         const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
7519                                         if (!virtual && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
7520                                                 virtual = 1;
7521                                 }
7522
7523                                 if (!cmethod->klass->inited)
7524                                         if (!mono_class_init (cmethod->klass))
7525                                                 TYPE_LOAD_ERROR (cmethod->klass);
7526
7527                                 if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
7528                                     mini_class_is_system_array (cmethod->klass)) {
7529                                         array_rank = cmethod->klass->rank;
7530                                         fsig = mono_method_signature (cmethod);
7531                                 } else {
7532                                         fsig = mono_method_signature (cmethod);
7533
7534                                         if (!fsig)
7535                                                 LOAD_ERROR;
7536
7537                                         if (fsig->pinvoke) {
7538                                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod,
7539                                                         check_for_pending_exc, FALSE);
7540                                                 fsig = mono_method_signature (wrapper);
7541                                         } else if (constrained_call) {
7542                                                 fsig = mono_method_signature (cmethod);
7543                                         } else {
7544                                                 fsig = mono_method_get_signature_full (cmethod, image, token, generic_context);
7545                                         }
7546                                 }
7547
7548                                 mono_save_token_info (cfg, image, token, cil_method);
7549
7550                                 if (!MONO_TYPE_IS_VOID (fsig->ret) && !sym_seq_points) {
7551                                         /*
7552                                          * Need to emit an implicit seq point after every non-void call so single stepping through nested calls like
7553                                          * foo (bar (), baz ())
7554                                          * works correctly. MS does this also:
7555                                          * http://stackoverflow.com/questions/6937198/making-your-net-language-step-correctly-in-the-debugger
7556                                          * The problem with this approach is that the debugger will stop after all calls returning a value,
7557                                          * even for simple cases, like:
7558                                          * int i = foo ();
7559                                          */
7560                                         /* Special case a few common successor opcodes */
7561                                         if (!(ip + 5 < end && ip [5] == CEE_POP))
7562                                                 need_seq_point = TRUE;
7563                                 }
7564
7565                                 n = fsig->param_count + fsig->hasthis;
7566
7567                                 /* Don't support calls made using type arguments for now */
7568                                 /*
7569                                 if (cfg->gsharedvt) {
7570                                         if (mini_is_gsharedvt_signature (cfg, fsig))
7571                                                 GSHAREDVT_FAILURE (*ip);
7572                                 }
7573                                 */
7574
7575                                 if (mono_security_cas_enabled ()) {
7576                                         if (check_linkdemand (cfg, method, cmethod))
7577                                                 INLINE_FAILURE ("linkdemand");
7578                                         CHECK_CFG_EXCEPTION;
7579                                 }
7580
7581                                 if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
7582                                         g_assert_not_reached ();
7583                         }
7584
7585                         if (!cfg->generic_sharing_context && cmethod && cmethod->klass->generic_container)
7586                                 UNVERIFIED;
7587
7588                         if (!cfg->generic_sharing_context && cmethod)
7589                                 g_assert (!mono_method_check_context_used (cmethod));
7590
7591                         CHECK_STACK (n);
7592
7593                         //g_assert (!virtual || fsig->hasthis);
7594
7595                         sp -= n;
7596
7597                         if (constrained_call) {
7598                                 if (mini_is_gsharedvt_klass (cfg, constrained_call)) {
7599                                         /*
7600                                          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
7601                                          */
7602                                         /* Special case Object methods as they are easy to implement */
7603                                         if (cmethod->klass == mono_defaults.object_class) {
7604                                                 MonoInst *args [16];
7605
7606                                                 args [0] = sp [0];
7607                                                 EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
7608                                                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_call), constrained_call, MONO_RGCTX_INFO_KLASS);
7609
7610                                                 if (!strcmp (cmethod->name, "ToString")) {
7611                                                         ins = mono_emit_jit_icall (cfg, mono_object_tostring_gsharedvt, args);
7612                                                 } else if (!strcmp (cmethod->name, "Equals")) {
7613                                                         args [3] = sp [1];
7614                                                         ins = mono_emit_jit_icall (cfg, mono_object_equals_gsharedvt, args);
7615                                                 } else if (!strcmp (cmethod->name, "GetHashCode")) {
7616                                                         ins = mono_emit_jit_icall (cfg, mono_object_gethashcode_gsharedvt, args);
7617                                                 } else {
7618                                                         GSHAREDVT_FAILURE (*ip);
7619                                                 }
7620                                                 goto call_end;
7621                                         } else if (constrained_call->valuetype && cmethod->klass->valuetype) {
7622                                                 /* The 'Own method' case below */
7623                                         } else {
7624                                                 GSHAREDVT_FAILURE (*ip);
7625                                         }
7626                                 }
7627                                 /*
7628                                  * We have the `constrained.' prefix opcode.
7629                                  */
7630                                 if (constrained_call->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
7631                                         /*
7632                                          * The type parameter is instantiated as a valuetype,
7633                                          * but that type doesn't override the method we're
7634                                          * calling, so we need to box `this'.
7635                                          */
7636                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
7637                                         ins->klass = constrained_call;
7638                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call), &bblock);
7639                                         CHECK_CFG_EXCEPTION;
7640                                 } else if (!constrained_call->valuetype) {
7641                                         int dreg = alloc_ireg_ref (cfg);
7642
7643                                         /*
7644                                          * The type parameter is instantiated as a reference
7645                                          * type.  We have a managed pointer on the stack, so
7646                                          * we need to dereference it here.
7647                                          */
7648                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
7649                                         ins->type = STACK_OBJ;
7650                                         sp [0] = ins;
7651                                 } else {
7652                                         if (cmethod->klass->valuetype) {
7653                                                 /* Own method */
7654                                         } else {
7655                                                 /* Interface method */
7656                                                 int ioffset, slot;
7657
7658                                                 mono_class_setup_vtable (constrained_call);
7659                                                 CHECK_TYPELOAD (constrained_call);
7660                                                 ioffset = mono_class_interface_offset (constrained_call, cmethod->klass);
7661                                                 if (ioffset == -1)
7662                                                         TYPE_LOAD_ERROR (constrained_call);
7663                                                 slot = mono_method_get_vtable_slot (cmethod);
7664                                                 if (slot == -1)
7665                                                         TYPE_LOAD_ERROR (cmethod->klass);
7666                                                 cmethod = constrained_call->vtable [ioffset + slot];
7667
7668                                                 if (cmethod->klass == mono_defaults.enum_class) {
7669                                                         /* Enum implements some interfaces, so treat this as the first case */
7670                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_call->byval_arg, sp [0]->dreg, 0);
7671                                                         ins->klass = constrained_call;
7672                                                         sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call), &bblock);
7673                                                         CHECK_CFG_EXCEPTION;
7674                                                 }
7675                                         }
7676                                         virtual = 0;
7677                                 }
7678                                 constrained_call = NULL;
7679                         }
7680
7681                         if (!calli && check_call_signature (cfg, fsig, sp))
7682                                 UNVERIFIED;
7683
7684 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
7685                         if (cmethod && (cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
7686                                 delegate_invoke = TRUE;
7687 #endif
7688
7689                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
7690                                 bblock = cfg->cbb;
7691                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7692                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
7693                                         emit_widen = FALSE;
7694                                 }
7695
7696                                 goto call_end;
7697                         }
7698
7699                         /*
7700                          * If the callee is a shared method, then its static cctor
7701                          * might not get called after the call was patched.
7702                          */
7703                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
7704                                 emit_generic_class_init (cfg, cmethod->klass);
7705                                 CHECK_TYPELOAD (cmethod->klass);
7706                         }
7707
7708                         if (cmethod)
7709                                 check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
7710
7711                         if (cfg->generic_sharing_context && cmethod) {
7712                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
7713
7714                                 context_used = mini_method_check_context_used (cfg, cmethod);
7715
7716                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7717                                         /* Generic method interface
7718                                            calls are resolved via a
7719                                            helper function and don't
7720                                            need an imt. */
7721                                         if (!cmethod_context || !cmethod_context->method_inst)
7722                                                 pass_imt_from_rgctx = TRUE;
7723                                 }
7724
7725                                 /*
7726                                  * If a shared method calls another
7727                                  * shared method then the caller must
7728                                  * have a generic sharing context
7729                                  * because the magic trampoline
7730                                  * requires it.  FIXME: We shouldn't
7731                                  * have to force the vtable/mrgctx
7732                                  * variable here.  Instead there
7733                                  * should be a flag in the cfg to
7734                                  * request a generic sharing context.
7735                                  */
7736                                 if (context_used &&
7737                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
7738                                         mono_get_vtable_var (cfg);
7739                         }
7740
7741                         if (pass_vtable) {
7742                                 if (context_used) {
7743                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7744                                 } else {
7745                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7746
7747                                         CHECK_TYPELOAD (cmethod->klass);
7748                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7749                                 }
7750                         }
7751
7752                         if (pass_mrgctx) {
7753                                 g_assert (!vtable_arg);
7754
7755                                 if (!cfg->compile_aot) {
7756                                         /*
7757                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
7758                                          * for type load errors before.
7759                                          */
7760                                         mono_class_setup_vtable (cmethod->klass);
7761                                         CHECK_TYPELOAD (cmethod->klass);
7762                                 }
7763
7764                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7765
7766                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
7767                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
7768                                          MONO_METHOD_IS_FINAL (cmethod)) &&
7769                                         !mono_class_is_marshalbyref (cmethod->klass)) {
7770                                         if (virtual)
7771                                                 check_this = TRUE;
7772                                         virtual = 0;
7773                                 }
7774                         }
7775
7776                         if (pass_imt_from_rgctx) {
7777                                 g_assert (!pass_vtable);
7778                                 g_assert (cmethod);
7779
7780                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
7781                                         cmethod, MONO_RGCTX_INFO_METHOD);
7782                         }
7783
7784                         if (check_this)
7785                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
7786
7787                         /* Calling virtual generic methods */
7788                         if (cmethod && virtual &&
7789                             (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
7790                             !(MONO_METHOD_IS_FINAL (cmethod) &&
7791                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
7792                             fsig->generic_param_count &&
7793                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))) {
7794                                 MonoInst *this_temp, *this_arg_temp, *store;
7795                                 MonoInst *iargs [4];
7796                                 gboolean use_imt = FALSE;
7797
7798                                 g_assert (fsig->is_inflated);
7799
7800                                 /* Prevent inlining of methods that contain indirect calls */
7801                                 INLINE_FAILURE ("virtual generic call");
7802
7803                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
7804                                         GSHAREDVT_FAILURE (*ip);
7805
7806 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
7807                                 if (cmethod->wrapper_type == MONO_WRAPPER_NONE && mono_use_imt)
7808                                         use_imt = TRUE;
7809 #endif
7810
7811                                 if (use_imt) {
7812                                         g_assert (!imt_arg);
7813                                         if (!context_used)
7814                                                 g_assert (cmethod->is_inflated);
7815                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
7816                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
7817                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
7818                                 } else {
7819                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
7820                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
7821                                         MONO_ADD_INS (bblock, store);
7822
7823                                         /* FIXME: This should be a managed pointer */
7824                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7825
7826                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
7827                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
7828                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
7829                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
7830                                         addr = mono_emit_jit_icall (cfg,
7831                                                                                                 mono_helper_compile_generic_method, iargs);
7832
7833                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
7834
7835                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
7836                                 }
7837
7838                                 goto call_end;
7839                         }
7840
7841                         /*
7842                          * Implement a workaround for the inherent races involved in locking:
7843                          * Monitor.Enter ()
7844                          * try {
7845                          * } finally {
7846                          *    Monitor.Exit ()
7847                          * }
7848                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
7849                          * try block, the Exit () won't be executed, see:
7850                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
7851                          * To work around this, we extend such try blocks to include the last x bytes
7852                          * of the Monitor.Enter () call.
7853                          */
7854                         if (cmethod && cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
7855                                 MonoBasicBlock *tbb;
7856
7857                                 GET_BBLOCK (cfg, tbb, ip + 5);
7858                                 /*
7859                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
7860                                  * from Monitor.Enter like ArgumentNullException.
7861                                  */
7862                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
7863                                         /* Mark this bblock as needing to be extended */
7864                                         tbb->extend_try_block = TRUE;
7865                                 }
7866                         }
7867
7868                         /* Conversion to a JIT intrinsic */
7869                         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
7870                                 bblock = cfg->cbb;
7871                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7872                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
7873                                         emit_widen = FALSE;
7874                                 }
7875                                 goto call_end;
7876                         }
7877
7878                         /* Inlining */
7879                         if (cmethod && (cfg->opt & MONO_OPT_INLINE) &&
7880                                 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
7881                             !disable_inline && mono_method_check_inlining (cfg, cmethod) &&
7882                                  !g_list_find (dont_inline, cmethod)) {
7883                                 int costs;
7884                                 gboolean always = FALSE;
7885
7886                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
7887                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
7888                                         /* Prevent inlining of methods that call wrappers */
7889                                         INLINE_FAILURE ("wrapper call");
7890                                         cmethod = mono_marshal_get_native_wrapper (cmethod, check_for_pending_exc, FALSE);
7891                                         always = TRUE;
7892                                 }
7893
7894                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, always);
7895                                 if (costs) {
7896                                         cfg->real_offset += 5;
7897                                         bblock = cfg->cbb;
7898
7899                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7900                                                 /* *sp is already set by inline_method */
7901                                                 sp++;
7902                                                 push_res = FALSE;
7903                                         }
7904
7905                                         inline_costs += costs;
7906
7907                                         goto call_end;
7908                                 }
7909                         }
7910
7911                         /* Tail recursion elimination */
7912                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
7913                                 gboolean has_vtargs = FALSE;
7914                                 int i;
7915
7916                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
7917                                 INLINE_FAILURE ("tail call");
7918
7919                                 /* keep it simple */
7920                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
7921                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
7922                                                 has_vtargs = TRUE;
7923                                 }
7924
7925                                 if (!has_vtargs) {
7926                                         for (i = 0; i < n; ++i)
7927                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
7928                                         MONO_INST_NEW (cfg, ins, OP_BR);
7929                                         MONO_ADD_INS (bblock, ins);
7930                                         tblock = start_bblock->out_bb [0];
7931                                         link_bblock (cfg, bblock, tblock);
7932                                         ins->inst_target_bb = tblock;
7933                                         start_new_bblock = 1;
7934
7935                                         /* skip the CEE_RET, too */
7936                                         if (ip_in_bb (cfg, bblock, ip + 5))
7937                                                 skip_ret = TRUE;
7938                                         push_res = FALSE;
7939                                         goto call_end;
7940                                 }
7941                         }
7942
7943                         inline_costs += 10 * num_calls++;
7944
7945                         /*
7946                          * Making generic calls out of gsharedvt methods.
7947                          */
7948                         if (cmethod && cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7949                                 MonoRgctxInfoType info_type;
7950
7951                                 if (virtual) {
7952                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
7953                                                 //GSHAREDVT_FAILURE (*ip);
7954                                         // disable for possible remoting calls
7955                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
7956                                                 GSHAREDVT_FAILURE (*ip);
7957                                         if (fsig->generic_param_count) {
7958                                                 /* virtual generic call */
7959                                                 g_assert (mono_use_imt);
7960                                                 g_assert (!imt_arg);
7961                                                 /* Same as the virtual generic case above */
7962                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
7963                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
7964                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
7965                                                 vtable_arg = NULL;
7966                                         }
7967                                 }
7968
7969                                 if (cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY)
7970                                         /* test_0_multi_dim_arrays () in gshared.cs */
7971                                         GSHAREDVT_FAILURE (*ip);
7972
7973                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
7974                                         keep_this_alive = sp [0];
7975
7976                                 if (virtual && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
7977                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
7978                                 else
7979                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
7980                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
7981
7982                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
7983                                 goto call_end;
7984                         } else if (calli && cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
7985                                 /*
7986                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
7987                                  */
7988                                 MonoInst *callee = addr;
7989
7990                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
7991                                         /* Not tested */
7992                                         GSHAREDVT_FAILURE (*ip);
7993
7994                                 addr = emit_get_rgctx_sig (cfg, context_used,
7995                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
7996                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
7997                                 goto call_end;
7998                         }
7999
8000                         /* Generic sharing */
8001                         /* FIXME: only do this for generic methods if
8002                            they are not shared! */
8003                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8004                                 (!mono_method_is_generic_sharable (cmethod, TRUE) ||
8005                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8006                                 (!virtual || MONO_METHOD_IS_FINAL (cmethod) ||
8007                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8008                                 INLINE_FAILURE ("gshared");
8009
8010                                 g_assert (cfg->generic_sharing_context && cmethod);
8011                                 g_assert (!addr);
8012
8013                                 /*
8014                                  * We are compiling a call to a
8015                                  * generic method from shared code,
8016                                  * which means that we have to look up
8017                                  * the method in the rgctx and do an
8018                                  * indirect call.
8019                                  */
8020                                 if (fsig->hasthis)
8021                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8022
8023                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8024                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8025                                 goto call_end;
8026                         }
8027
8028                         /* Indirect calls */
8029                         if (addr) {
8030                                 if (call_opcode == CEE_CALL)
8031                                         g_assert (context_used);
8032                                 else if (call_opcode == CEE_CALLI)
8033                                         g_assert (!vtable_arg);
8034                                 else
8035                                         /* FIXME: what the hell is this??? */
8036                                         g_assert (cmethod->flags & METHOD_ATTRIBUTE_FINAL ||
8037                                                         !(cmethod->flags & METHOD_ATTRIBUTE_FINAL));
8038
8039                                 /* Prevent inlining of methods with indirect calls */
8040                                 INLINE_FAILURE ("indirect call");
8041
8042                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8043                                         int info_type;
8044                                         gpointer info_data;
8045
8046                                         /*
8047                                          * Instead of emitting an indirect call, emit a direct call
8048                                          * with the contents of the aotconst as the patch info.
8049                                          */
8050                                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8051                                                 info_type = addr->inst_c1;
8052                                                 info_data = addr->inst_p0;
8053                                         } else {
8054                                                 info_type = addr->inst_right->inst_c1;
8055                                                 info_data = addr->inst_right->inst_left;
8056                                         }
8057
8058                                         if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8059                                                 ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8060                                                 NULLIFY_INS (addr);
8061                                                 goto call_end;
8062                                         }
8063                                 }
8064                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8065                                 goto call_end;
8066                         }
8067
8068                         /* Array methods */
8069                         if (array_rank) {
8070                                 MonoInst *addr;
8071
8072                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8073                                         MonoInst *val = sp [fsig->param_count];
8074
8075                                         if (val->type == STACK_OBJ) {
8076                                                 MonoInst *iargs [2];
8077
8078                                                 iargs [0] = sp [0];
8079                                                 iargs [1] = val;
8080
8081                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8082                                         }
8083
8084                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8085                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8086                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
8087                                                 emit_write_barrier (cfg, addr, val, 0);
8088                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8089                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8090
8091                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8092                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8093                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8094                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8095                                         CHECK_TYPELOAD (cmethod->klass);
8096
8097                                         readonly = FALSE;
8098                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8099                                         ins = addr;
8100                                 } else {
8101                                         g_assert_not_reached ();
8102                                 }
8103
8104                                 emit_widen = FALSE;
8105                                 goto call_end;
8106                         }
8107
8108                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL);
8109                         if (ins)
8110                                 goto call_end;
8111
8112                         /* Tail prefix / tail call optimization */
8113
8114                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8115                         /* FIXME: runtime generic context pointer for jumps? */
8116                         /* FIXME: handle this for generic sharing eventually */
8117                         if (cmethod && (ins_flag & MONO_INST_TAILCALL) &&
8118                                 !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig))
8119                                 supported_tail_call = TRUE;
8120                         if (supported_tail_call) {
8121                                 if (call_opcode != CEE_CALL)
8122                                         supported_tail_call = FALSE;
8123                         }
8124
8125                         if (supported_tail_call) {
8126                                 MonoCallInst *call;
8127
8128                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8129                                 INLINE_FAILURE ("tail call");
8130
8131                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8132
8133                                 if (ARCH_USE_OP_TAIL_CALL) {
8134                                         /* Handle tail calls similarly to normal calls */
8135                                         tail_call = TRUE;
8136                                 } else {
8137                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8138                                         call->tail_call = TRUE;
8139                                         call->method = cmethod;
8140                                         call->signature = mono_method_signature (cmethod);
8141
8142                                         /*
8143                                          * We implement tail calls by storing the actual arguments into the
8144                                          * argument variables, then emitting a CEE_JMP.
8145                                          */
8146                                         for (i = 0; i < n; ++i) {
8147                                                 /* Prevent argument from being register allocated */
8148                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
8149                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8150                                         }
8151                                         ins = (MonoInst*)call;
8152                                         ins->inst_p0 = cmethod;
8153                                         ins->inst_p1 = arg_array [0];
8154                                         MONO_ADD_INS (bblock, ins);
8155                                         link_bblock (cfg, bblock, end_bblock);
8156                                         start_new_bblock = 1;
8157
8158                                         // FIXME: Eliminate unreachable epilogs
8159
8160                                         /*
8161                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
8162                                          * only reachable from this call.
8163                                          */
8164                                         GET_BBLOCK (cfg, tblock, ip + 5);
8165                                         if (tblock == bblock || tblock->in_count == 0)
8166                                                 skip_ret = TRUE;
8167                                         push_res = FALSE;
8168
8169                                         goto call_end;
8170                                 }
8171                         }
8172
8173                         /*
8174                          * Synchronized wrappers.
8175                          * Its hard to determine where to replace a method with its synchronized
8176                          * wrapper without causing an infinite recursion. The current solution is
8177                          * to add the synchronized wrapper in the trampolines, and to
8178                          * change the called method to a dummy wrapper, and resolve that wrapper
8179                          * to the real method in mono_jit_compile_method ().
8180                          */
8181                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED && mono_marshal_method_from_wrapper (cfg->method) == cmethod)
8182                                 cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8183
8184                         /* Common call */
8185                         INLINE_FAILURE ("call");
8186                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual ? sp [0] : NULL,
8187                                                                                           imt_arg, vtable_arg);
8188
8189                         if (tail_call) {
8190                                 link_bblock (cfg, bblock, end_bblock);
8191                                 start_new_bblock = 1;
8192
8193                                 // FIXME: Eliminate unreachable epilogs
8194
8195                                 /*
8196                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
8197                                  * only reachable from this call.
8198                                  */
8199                                 GET_BBLOCK (cfg, tblock, ip + 5);
8200                                 if (tblock == bblock || tblock->in_count == 0)
8201                                         skip_ret = TRUE;
8202                                 push_res = FALSE;
8203                         }
8204
8205                         call_end:
8206
8207                         /* End of call, INS should contain the result of the call, if any */
8208
8209                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
8210                                 g_assert (ins);
8211                                 if (emit_widen)
8212                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8213                                 else
8214                                         *sp++ = ins;
8215                         }
8216
8217                         if (keep_this_alive) {
8218                                 MonoInst *dummy_use;
8219
8220                                 /* See mono_emit_method_call_full () */
8221                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
8222                         }
8223
8224                         CHECK_CFG_EXCEPTION;
8225
8226                         ip += 5;
8227                         if (skip_ret) {
8228                                 g_assert (*ip == CEE_RET);
8229                                 ip += 1;
8230                         }
8231                         ins_flag = 0;
8232                         constrained_call = NULL;
8233                         if (need_seq_point)
8234                                 emit_seq_point (cfg, method, ip, FALSE);
8235                         break;
8236                 }
8237                 case CEE_RET:
8238                         if (cfg->method != method) {
8239                                 /* return from inlined method */
8240                                 /*
8241                                  * If in_count == 0, that means the ret is unreachable due to
8242                                  * being preceeded by a throw. In that case, inline_method () will
8243                                  * handle setting the return value
8244                                  * (test case: test_0_inline_throw ()).
8245                                  */
8246                                 if (return_var && cfg->cbb->in_count) {
8247                                         MonoType *ret_type = mono_method_signature (method)->ret;
8248
8249                                         MonoInst *store;
8250                                         CHECK_STACK (1);
8251                                         --sp;
8252
8253                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
8254                                                 UNVERIFIED;
8255
8256                                         //g_assert (returnvar != -1);
8257                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
8258                                         cfg->ret_var_set = TRUE;
8259                                 }
8260                         } else {
8261                                 if (cfg->ret) {
8262                                         MonoType *ret_type = mono_method_signature (method)->ret;
8263
8264                                         if (seq_points && !sym_seq_points) {
8265                                                 /*
8266                                                  * Place a seq point here too even through the IL stack is not
8267                                                  * empty, so a step over on
8268                                                  * call <FOO>
8269                                                  * ret
8270                                                  * will work correctly.
8271                                                  */
8272                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
8273                                                 MONO_ADD_INS (cfg->cbb, ins);
8274                                         }
8275
8276                                         g_assert (!return_var);
8277                                         CHECK_STACK (1);
8278                                         --sp;
8279
8280                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
8281                                                 UNVERIFIED;
8282
8283                                         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8284                                                 MonoInst *ret_addr;
8285
8286                                                 if (!cfg->vret_addr) {
8287                                                         MonoInst *ins;
8288
8289                                                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, (*sp));
8290                                                 } else {
8291                                                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8292
8293                                                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, (*sp)->dreg);
8294                                                         ins->klass = mono_class_from_mono_type (ret_type);
8295                                                 }
8296                                         } else {
8297 #ifdef MONO_ARCH_SOFT_FLOAT
8298                                                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8299                                                         MonoInst *iargs [1];
8300                                                         MonoInst *conv;
8301
8302                                                         iargs [0] = *sp;
8303                                                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8304                                                         mono_arch_emit_setret (cfg, method, conv);
8305                                                 } else {
8306                                                         mono_arch_emit_setret (cfg, method, *sp);
8307                                                 }
8308 #else
8309                                                 mono_arch_emit_setret (cfg, method, *sp);
8310 #endif
8311                                         }
8312                                 }
8313                         }
8314                         if (sp != stack_start)
8315                                 UNVERIFIED;
8316                         MONO_INST_NEW (cfg, ins, OP_BR);
8317                         ip++;
8318                         ins->inst_target_bb = end_bblock;
8319                         MONO_ADD_INS (bblock, ins);
8320                         link_bblock (cfg, bblock, end_bblock);
8321                         start_new_bblock = 1;
8322                         break;
8323                 case CEE_BR_S:
8324                         CHECK_OPSIZE (2);
8325                         MONO_INST_NEW (cfg, ins, OP_BR);
8326                         ip++;
8327                         target = ip + 1 + (signed char)(*ip);
8328                         ++ip;
8329                         GET_BBLOCK (cfg, tblock, target);
8330                         link_bblock (cfg, bblock, tblock);
8331                         ins->inst_target_bb = tblock;
8332                         if (sp != stack_start) {
8333                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8334                                 sp = stack_start;
8335                                 CHECK_UNVERIFIABLE (cfg);
8336                         }
8337                         MONO_ADD_INS (bblock, ins);
8338                         start_new_bblock = 1;
8339                         inline_costs += BRANCH_COST;
8340                         break;
8341                 case CEE_BEQ_S:
8342                 case CEE_BGE_S:
8343                 case CEE_BGT_S:
8344                 case CEE_BLE_S:
8345                 case CEE_BLT_S:
8346                 case CEE_BNE_UN_S:
8347                 case CEE_BGE_UN_S:
8348                 case CEE_BGT_UN_S:
8349                 case CEE_BLE_UN_S:
8350                 case CEE_BLT_UN_S:
8351                         CHECK_OPSIZE (2);
8352                         CHECK_STACK (2);
8353                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
8354                         ip++;
8355                         target = ip + 1 + *(signed char*)ip;
8356                         ip++;
8357
8358                         ADD_BINCOND (NULL);
8359
8360                         sp = stack_start;
8361                         inline_costs += BRANCH_COST;
8362                         break;
8363                 case CEE_BR:
8364                         CHECK_OPSIZE (5);
8365                         MONO_INST_NEW (cfg, ins, OP_BR);
8366                         ip++;
8367
8368                         target = ip + 4 + (gint32)read32(ip);
8369                         ip += 4;
8370                         GET_BBLOCK (cfg, tblock, target);
8371                         link_bblock (cfg, bblock, tblock);
8372                         ins->inst_target_bb = tblock;
8373                         if (sp != stack_start) {
8374                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8375                                 sp = stack_start;
8376                                 CHECK_UNVERIFIABLE (cfg);
8377                         }
8378
8379                         MONO_ADD_INS (bblock, ins);
8380
8381                         start_new_bblock = 1;
8382                         inline_costs += BRANCH_COST;
8383                         break;
8384                 case CEE_BRFALSE_S:
8385                 case CEE_BRTRUE_S:
8386                 case CEE_BRFALSE:
8387                 case CEE_BRTRUE: {
8388                         MonoInst *cmp;
8389                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
8390                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
8391                         guint32 opsize = is_short ? 1 : 4;
8392
8393                         CHECK_OPSIZE (opsize);
8394                         CHECK_STACK (1);
8395                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
8396                                 UNVERIFIED;
8397                         ip ++;
8398                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
8399                         ip += opsize;
8400
8401                         sp--;
8402
8403                         GET_BBLOCK (cfg, tblock, target);
8404                         link_bblock (cfg, bblock, tblock);
8405                         GET_BBLOCK (cfg, tblock, ip);
8406                         link_bblock (cfg, bblock, tblock);
8407
8408                         if (sp != stack_start) {
8409                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8410                                 CHECK_UNVERIFIABLE (cfg);
8411                         }
8412
8413                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
8414                         cmp->sreg1 = sp [0]->dreg;
8415                         type_from_op (cmp, sp [0], NULL);
8416                         CHECK_TYPE (cmp);
8417
8418 #if SIZEOF_REGISTER == 4
8419                         if (cmp->opcode == OP_LCOMPARE_IMM) {
8420                                 /* Convert it to OP_LCOMPARE */
8421                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
8422                                 ins->type = STACK_I8;
8423                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
8424                                 ins->inst_l = 0;
8425                                 MONO_ADD_INS (bblock, ins);
8426                                 cmp->opcode = OP_LCOMPARE;
8427                                 cmp->sreg2 = ins->dreg;
8428                         }
8429 #endif
8430                         MONO_ADD_INS (bblock, cmp);
8431
8432                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
8433                         type_from_op (ins, sp [0], NULL);
8434                         MONO_ADD_INS (bblock, ins);
8435                         ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
8436                         GET_BBLOCK (cfg, tblock, target);
8437                         ins->inst_true_bb = tblock;
8438                         GET_BBLOCK (cfg, tblock, ip);
8439                         ins->inst_false_bb = tblock;
8440                         start_new_bblock = 2;
8441
8442                         sp = stack_start;
8443                         inline_costs += BRANCH_COST;
8444                         break;
8445                 }
8446                 case CEE_BEQ:
8447                 case CEE_BGE:
8448                 case CEE_BGT:
8449                 case CEE_BLE:
8450                 case CEE_BLT:
8451                 case CEE_BNE_UN:
8452                 case CEE_BGE_UN:
8453                 case CEE_BGT_UN:
8454                 case CEE_BLE_UN:
8455                 case CEE_BLT_UN:
8456                         CHECK_OPSIZE (5);
8457                         CHECK_STACK (2);
8458                         MONO_INST_NEW (cfg, ins, *ip);
8459                         ip++;
8460                         target = ip + 4 + (gint32)read32(ip);
8461                         ip += 4;
8462
8463                         ADD_BINCOND (NULL);
8464
8465                         sp = stack_start;
8466                         inline_costs += BRANCH_COST;
8467                         break;
8468                 case CEE_SWITCH: {
8469                         MonoInst *src1;
8470                         MonoBasicBlock **targets;
8471                         MonoBasicBlock *default_bblock;
8472                         MonoJumpInfoBBTable *table;
8473                         int offset_reg = alloc_preg (cfg);
8474                         int target_reg = alloc_preg (cfg);
8475                         int table_reg = alloc_preg (cfg);
8476                         int sum_reg = alloc_preg (cfg);
8477                         gboolean use_op_switch;
8478
8479                         CHECK_OPSIZE (5);
8480                         CHECK_STACK (1);
8481                         n = read32 (ip + 1);
8482                         --sp;
8483                         src1 = sp [0];
8484                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
8485                                 UNVERIFIED;
8486
8487                         ip += 5;
8488                         CHECK_OPSIZE (n * sizeof (guint32));
8489                         target = ip + n * sizeof (guint32);
8490
8491                         GET_BBLOCK (cfg, default_bblock, target);
8492                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8493
8494                         targets = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
8495                         for (i = 0; i < n; ++i) {
8496                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
8497                                 targets [i] = tblock;
8498                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
8499                                 ip += 4;
8500                         }
8501
8502                         if (sp != stack_start) {
8503                                 /*
8504                                  * Link the current bb with the targets as well, so handle_stack_args
8505                                  * will set their in_stack correctly.
8506                                  */
8507                                 link_bblock (cfg, bblock, default_bblock);
8508                                 for (i = 0; i < n; ++i)
8509                                         link_bblock (cfg, bblock, targets [i]);
8510
8511                                 handle_stack_args (cfg, stack_start, sp - stack_start);
8512                                 sp = stack_start;
8513                                 CHECK_UNVERIFIABLE (cfg);
8514                         }
8515
8516                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
8517                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
8518                         bblock = cfg->cbb;
8519
8520                         for (i = 0; i < n; ++i)
8521                                 link_bblock (cfg, bblock, targets [i]);
8522
8523                         table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
8524                         table->table = targets;
8525                         table->table_size = n;
8526
8527                         use_op_switch = FALSE;
8528 #ifdef TARGET_ARM
8529                         /* ARM implements SWITCH statements differently */
8530                         /* FIXME: Make it use the generic implementation */
8531                         if (!cfg->compile_aot)
8532                                 use_op_switch = TRUE;
8533 #endif
8534
8535                         if (COMPILE_LLVM (cfg))
8536                                 use_op_switch = TRUE;
8537
8538                         cfg->cbb->has_jump_table = 1;
8539
8540                         if (use_op_switch) {
8541                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
8542                                 ins->sreg1 = src1->dreg;
8543                                 ins->inst_p0 = table;
8544                                 ins->inst_many_bb = targets;
8545                                 ins->klass = GUINT_TO_POINTER (n);
8546                                 MONO_ADD_INS (cfg->cbb, ins);
8547                         } else {
8548                                 if (sizeof (gpointer) == 8)
8549                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
8550                                 else
8551                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
8552
8553 #if SIZEOF_REGISTER == 8
8554                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
8555                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
8556 #endif
8557
8558                                 if (cfg->compile_aot) {
8559                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
8560                                 } else {
8561                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
8562                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
8563                                         ins->inst_p0 = table;
8564                                         ins->dreg = table_reg;
8565                                         MONO_ADD_INS (cfg->cbb, ins);
8566                                 }
8567
8568                                 /* FIXME: Use load_memindex */
8569                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
8570                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
8571                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
8572                         }
8573                         start_new_bblock = 1;
8574                         inline_costs += (BRANCH_COST * 2);
8575                         break;
8576                 }
8577                 case CEE_LDIND_I1:
8578                 case CEE_LDIND_U1:
8579                 case CEE_LDIND_I2:
8580                 case CEE_LDIND_U2:
8581                 case CEE_LDIND_I4:
8582                 case CEE_LDIND_U4:
8583                 case CEE_LDIND_I8:
8584                 case CEE_LDIND_I:
8585                 case CEE_LDIND_R4:
8586                 case CEE_LDIND_R8:
8587                 case CEE_LDIND_REF:
8588                         CHECK_STACK (1);
8589                         --sp;
8590
8591                         switch (*ip) {
8592                         case CEE_LDIND_R4:
8593                         case CEE_LDIND_R8:
8594                                 dreg = alloc_freg (cfg);
8595                                 break;
8596                         case CEE_LDIND_I8:
8597                                 dreg = alloc_lreg (cfg);
8598                                 break;
8599                         case CEE_LDIND_REF:
8600                                 dreg = alloc_ireg_ref (cfg);
8601                                 break;
8602                         default:
8603                                 dreg = alloc_preg (cfg);
8604                         }
8605
8606                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
8607                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
8608                         ins->flags |= ins_flag;
8609                         ins_flag = 0;
8610                         MONO_ADD_INS (bblock, ins);
8611                         *sp++ = ins;
8612                         if (ins->flags & MONO_INST_VOLATILE) {
8613                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
8614                                 /* FIXME it's questionable if acquire semantics require full barrier or just LoadLoad*/
8615                                 emit_memory_barrier (cfg, FullBarrier);
8616                         }
8617                         ++ip;
8618                         break;
8619                 case CEE_STIND_REF:
8620                 case CEE_STIND_I1:
8621                 case CEE_STIND_I2:
8622                 case CEE_STIND_I4:
8623                 case CEE_STIND_I8:
8624                 case CEE_STIND_R4:
8625                 case CEE_STIND_R8:
8626                 case CEE_STIND_I:
8627                         CHECK_STACK (2);
8628                         sp -= 2;
8629
8630                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
8631                         ins->flags |= ins_flag;
8632                         ins_flag = 0;
8633
8634                         if (ins->flags & MONO_INST_VOLATILE) {
8635                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
8636                                 /* FIXME it's questionable if acquire semantics require full barrier or just LoadLoad*/
8637                                 emit_memory_barrier (cfg, FullBarrier);
8638                         }
8639
8640                         MONO_ADD_INS (bblock, ins);
8641
8642                         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)))
8643                                 emit_write_barrier (cfg, sp [0], sp [1], -1);
8644
8645                         inline_costs += 1;
8646                         ++ip;
8647                         break;
8648
8649                 case CEE_MUL:
8650                         CHECK_STACK (2);
8651
8652                         MONO_INST_NEW (cfg, ins, (*ip));
8653                         sp -= 2;
8654                         ins->sreg1 = sp [0]->dreg;
8655                         ins->sreg2 = sp [1]->dreg;
8656                         type_from_op (ins, sp [0], sp [1]);
8657                         CHECK_TYPE (ins);
8658                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
8659
8660                         /* Use the immediate opcodes if possible */
8661                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
8662                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
8663                                 if (imm_opcode != -1) {
8664                                         ins->opcode = imm_opcode;
8665                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
8666                                         ins->sreg2 = -1;
8667
8668                                         sp [1]->opcode = OP_NOP;
8669                                 }
8670                         }
8671
8672                         MONO_ADD_INS ((cfg)->cbb, (ins));
8673
8674                         *sp++ = mono_decompose_opcode (cfg, ins);
8675                         ip++;
8676                         break;
8677                 case CEE_ADD:
8678                 case CEE_SUB:
8679                 case CEE_DIV:
8680                 case CEE_DIV_UN:
8681                 case CEE_REM:
8682                 case CEE_REM_UN:
8683                 case CEE_AND:
8684                 case CEE_OR:
8685                 case CEE_XOR:
8686                 case CEE_SHL:
8687                 case CEE_SHR:
8688                 case CEE_SHR_UN:
8689                         CHECK_STACK (2);
8690
8691                         MONO_INST_NEW (cfg, ins, (*ip));
8692                         sp -= 2;
8693                         ins->sreg1 = sp [0]->dreg;
8694                         ins->sreg2 = sp [1]->dreg;
8695                         type_from_op (ins, sp [0], sp [1]);
8696                         CHECK_TYPE (ins);
8697                         ADD_WIDEN_OP (ins, sp [0], sp [1]);
8698                         ins->dreg = alloc_dreg ((cfg), (ins)->type);
8699
8700                         /* FIXME: Pass opcode to is_inst_imm */
8701
8702                         /* Use the immediate opcodes if possible */
8703                         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)) {
8704                                 int imm_opcode;
8705
8706                                 imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
8707 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
8708                                 /* Keep emulated opcodes which are optimized away later */
8709                                 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) {
8710                                         imm_opcode = mono_op_to_op_imm (ins->opcode);
8711                                 }
8712 #endif
8713                                 if (imm_opcode != -1) {
8714                                         ins->opcode = imm_opcode;
8715                                         if (sp [1]->opcode == OP_I8CONST) {
8716 #if SIZEOF_REGISTER == 8
8717                                                 ins->inst_imm = sp [1]->inst_l;
8718 #else
8719                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
8720                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
8721 #endif
8722                                         }
8723                                         else
8724                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
8725                                         ins->sreg2 = -1;
8726
8727                                         /* Might be followed by an instruction added by ADD_WIDEN_OP */
8728                                         if (sp [1]->next == NULL)
8729                                                 sp [1]->opcode = OP_NOP;
8730                                 }
8731                         }
8732                         MONO_ADD_INS ((cfg)->cbb, (ins));
8733
8734                         *sp++ = mono_decompose_opcode (cfg, ins);
8735                         ip++;
8736                         break;
8737                 case CEE_NEG:
8738                 case CEE_NOT:
8739                 case CEE_CONV_I1:
8740                 case CEE_CONV_I2:
8741                 case CEE_CONV_I4:
8742                 case CEE_CONV_R4:
8743                 case CEE_CONV_R8:
8744                 case CEE_CONV_U4:
8745                 case CEE_CONV_I8:
8746                 case CEE_CONV_U8:
8747                 case CEE_CONV_OVF_I8:
8748                 case CEE_CONV_OVF_U8:
8749                 case CEE_CONV_R_UN:
8750                         CHECK_STACK (1);
8751
8752                         /* Special case this earlier so we have long constants in the IR */
8753                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
8754                                 int data = sp [-1]->inst_c0;
8755                                 sp [-1]->opcode = OP_I8CONST;
8756                                 sp [-1]->type = STACK_I8;
8757 #if SIZEOF_REGISTER == 8
8758                                 if ((*ip) == CEE_CONV_U8)
8759                                         sp [-1]->inst_c0 = (guint32)data;
8760                                 else
8761                                         sp [-1]->inst_c0 = data;
8762 #else
8763                                 sp [-1]->inst_ls_word = data;
8764                                 if ((*ip) == CEE_CONV_U8)
8765                                         sp [-1]->inst_ms_word = 0;
8766                                 else
8767                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
8768 #endif
8769                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
8770                         }
8771                         else {
8772                                 ADD_UNOP (*ip);
8773                         }
8774                         ip++;
8775                         break;
8776                 case CEE_CONV_OVF_I4:
8777                 case CEE_CONV_OVF_I1:
8778                 case CEE_CONV_OVF_I2:
8779                 case CEE_CONV_OVF_I:
8780                 case CEE_CONV_OVF_U:
8781                         CHECK_STACK (1);
8782
8783                         if (sp [-1]->type == STACK_R8) {
8784                                 ADD_UNOP (CEE_CONV_OVF_I8);
8785                                 ADD_UNOP (*ip);
8786                         } else {
8787                                 ADD_UNOP (*ip);
8788                         }
8789                         ip++;
8790                         break;
8791                 case CEE_CONV_OVF_U1:
8792                 case CEE_CONV_OVF_U2:
8793                 case CEE_CONV_OVF_U4:
8794                         CHECK_STACK (1);
8795
8796                         if (sp [-1]->type == STACK_R8) {
8797                                 ADD_UNOP (CEE_CONV_OVF_U8);
8798                                 ADD_UNOP (*ip);
8799                         } else {
8800                                 ADD_UNOP (*ip);
8801                         }
8802                         ip++;
8803                         break;
8804                 case CEE_CONV_OVF_I1_UN:
8805                 case CEE_CONV_OVF_I2_UN:
8806                 case CEE_CONV_OVF_I4_UN:
8807                 case CEE_CONV_OVF_I8_UN:
8808                 case CEE_CONV_OVF_U1_UN:
8809                 case CEE_CONV_OVF_U2_UN:
8810                 case CEE_CONV_OVF_U4_UN:
8811                 case CEE_CONV_OVF_U8_UN:
8812                 case CEE_CONV_OVF_I_UN:
8813                 case CEE_CONV_OVF_U_UN:
8814                 case CEE_CONV_U2:
8815                 case CEE_CONV_U1:
8816                 case CEE_CONV_I:
8817                 case CEE_CONV_U:
8818                         CHECK_STACK (1);
8819                         ADD_UNOP (*ip);
8820                         CHECK_CFG_EXCEPTION;
8821                         ip++;
8822                         break;
8823                 case CEE_ADD_OVF:
8824                 case CEE_ADD_OVF_UN:
8825                 case CEE_MUL_OVF:
8826                 case CEE_MUL_OVF_UN:
8827                 case CEE_SUB_OVF:
8828                 case CEE_SUB_OVF_UN:
8829                         CHECK_STACK (2);
8830                         ADD_BINOP (*ip);
8831                         ip++;
8832                         break;
8833                 case CEE_CPOBJ:
8834                         GSHAREDVT_FAILURE (*ip);
8835                         CHECK_OPSIZE (5);
8836                         CHECK_STACK (2);
8837                         token = read32 (ip + 1);
8838                         klass = mini_get_class (method, token, generic_context);
8839                         CHECK_TYPELOAD (klass);
8840                         sp -= 2;
8841                         if (generic_class_is_reference_type (cfg, klass)) {
8842                                 MonoInst *store, *load;
8843                                 int dreg = alloc_ireg_ref (cfg);
8844
8845                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
8846                                 load->flags |= ins_flag;
8847                                 MONO_ADD_INS (cfg->cbb, load);
8848
8849                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
8850                                 store->flags |= ins_flag;
8851                                 MONO_ADD_INS (cfg->cbb, store);
8852
8853                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
8854                                         emit_write_barrier (cfg, sp [0], sp [1], -1);
8855                         } else {
8856                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
8857                         }
8858                         ins_flag = 0;
8859                         ip += 5;
8860                         break;
8861                 case CEE_LDOBJ: {
8862                         int loc_index = -1;
8863                         int stloc_len = 0;
8864
8865                         CHECK_OPSIZE (5);
8866                         CHECK_STACK (1);
8867                         --sp;
8868                         token = read32 (ip + 1);
8869                         klass = mini_get_class (method, token, generic_context);
8870                         CHECK_TYPELOAD (klass);
8871
8872                         /* Optimize the common ldobj+stloc combination */
8873                         switch (ip [5]) {
8874                         case CEE_STLOC_S:
8875                                 loc_index = ip [6];
8876                                 stloc_len = 2;
8877                                 break;
8878                         case CEE_STLOC_0:
8879                         case CEE_STLOC_1:
8880                         case CEE_STLOC_2:
8881                         case CEE_STLOC_3:
8882                                 loc_index = ip [5] - CEE_STLOC_0;
8883                                 stloc_len = 1;
8884                                 break;
8885                         default:
8886                                 break;
8887                         }
8888
8889                         if ((loc_index != -1) && ip_in_bb (cfg, bblock, ip + 5)) {
8890                                 CHECK_LOCAL (loc_index);
8891
8892                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
8893                                 ins->dreg = cfg->locals [loc_index]->dreg;
8894                                 ip += 5;
8895                                 ip += stloc_len;
8896                                 break;
8897                         }
8898
8899                         /* Optimize the ldobj+stobj combination */
8900                         /* The reference case ends up being a load+store anyway */
8901                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass)) {
8902                                 CHECK_STACK (1);
8903
8904                                 sp --;
8905
8906                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
8907
8908                                 ip += 5 + 5;
8909                                 ins_flag = 0;
8910                                 break;
8911                         }
8912
8913                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
8914                         *sp++ = ins;
8915
8916                         ip += 5;
8917                         ins_flag = 0;
8918                         inline_costs += 1;
8919                         break;
8920                 }
8921                 case CEE_LDSTR:
8922                         CHECK_STACK_OVF (1);
8923                         CHECK_OPSIZE (5);
8924                         n = read32 (ip + 1);
8925
8926                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
8927                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
8928                                 ins->type = STACK_OBJ;
8929                                 *sp = ins;
8930                         }
8931                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
8932                                 MonoInst *iargs [1];
8933
8934                                 EMIT_NEW_PCONST (cfg, iargs [0], mono_method_get_wrapper_data (method, n));
8935                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
8936                         } else {
8937                                 if (cfg->opt & MONO_OPT_SHARED) {
8938                                         MonoInst *iargs [3];
8939
8940                                         if (cfg->compile_aot) {
8941                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
8942                                         }
8943                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
8944                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
8945                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
8946                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
8947                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
8948                                 } else {
8949                                         if (bblock->out_of_line) {
8950                                                 MonoInst *iargs [2];
8951
8952                                                 if (image == mono_defaults.corlib) {
8953                                                         /*
8954                                                          * Avoid relocations in AOT and save some space by using a
8955                                                          * version of helper_ldstr specialized to mscorlib.
8956                                                          */
8957                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
8958                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
8959                                                 } else {
8960                                                         /* Avoid creating the string object */
8961                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
8962                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
8963                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
8964                                                 }
8965                                         }
8966                                         else
8967                                         if (cfg->compile_aot) {
8968                                                 NEW_LDSTRCONST (cfg, ins, image, n);
8969                                                 *sp = ins;
8970                                                 MONO_ADD_INS (bblock, ins);
8971                                         }
8972                                         else {
8973                                                 NEW_PCONST (cfg, ins, NULL);
8974                                                 ins->type = STACK_OBJ;
8975                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
8976                                                 if (!ins->inst_p0)
8977                                                         OUT_OF_MEMORY_FAILURE;
8978
8979                                                 *sp = ins;
8980                                                 MONO_ADD_INS (bblock, ins);
8981                                         }
8982                                 }
8983                         }
8984
8985                         sp++;
8986                         ip += 5;
8987                         break;
8988                 case CEE_NEWOBJ: {
8989                         MonoInst *iargs [2];
8990                         MonoMethodSignature *fsig;
8991                         MonoInst this_ins;
8992                         MonoInst *alloc;
8993                         MonoInst *vtable_arg = NULL;
8994
8995                         CHECK_OPSIZE (5);
8996                         token = read32 (ip + 1);
8997                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8998                         if (!cmethod || mono_loader_get_last_error ())
8999                                 LOAD_ERROR;
9000                         fsig = mono_method_get_signature (cmethod, image, token);
9001                         if (!fsig)
9002                                 LOAD_ERROR;
9003
9004                         mono_save_token_info (cfg, image, token, cmethod);
9005
9006                         if (!mono_class_init (cmethod->klass))
9007                                 TYPE_LOAD_ERROR (cmethod->klass);
9008
9009                         context_used = mini_method_check_context_used (cfg, cmethod);
9010
9011                         if (mono_security_cas_enabled ()) {
9012                                 if (check_linkdemand (cfg, method, cmethod))
9013                                         INLINE_FAILURE ("linkdemand");
9014                                 CHECK_CFG_EXCEPTION;
9015                         } else if (mono_security_core_clr_enabled ()) {
9016                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
9017                         }
9018
9019                         if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9020                                 emit_generic_class_init (cfg, cmethod->klass);
9021                                 CHECK_TYPELOAD (cmethod->klass);
9022                         }
9023
9024                         /*
9025                         if (cfg->gsharedvt) {
9026                                 if (mini_is_gsharedvt_variable_signature (sig))
9027                                         GSHAREDVT_FAILURE (*ip);
9028                         }
9029                         */
9030
9031                         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
9032                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
9033                                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
9034                                         mono_class_vtable (cfg->domain, cmethod->klass);
9035                                         CHECK_TYPELOAD (cmethod->klass);
9036
9037                                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
9038                                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9039                                 } else {
9040                                         if (context_used) {
9041                                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
9042                                                         cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9043                                         } else {
9044                                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9045
9046                                                 CHECK_TYPELOAD (cmethod->klass);
9047                                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9048                                         }
9049                                 }
9050                         }
9051
9052                         n = fsig->param_count;
9053                         CHECK_STACK (n);
9054
9055                         /*
9056                          * Generate smaller code for the common newobj <exception> instruction in
9057                          * argument checking code.
9058                          */
9059                         if (bblock->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9060                                 is_exception_class (cmethod->klass) && n <= 2 &&
9061                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9062                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9063                                 MonoInst *iargs [3];
9064
9065                                 g_assert (!vtable_arg);
9066
9067                                 sp -= n;
9068
9069                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9070                                 switch (n) {
9071                                 case 0:
9072                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9073                                         break;
9074                                 case 1:
9075                                         iargs [1] = sp [0];
9076                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9077                                         break;
9078                                 case 2:
9079                                         iargs [1] = sp [0];
9080                                         iargs [2] = sp [1];
9081                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9082                                         break;
9083                                 default:
9084                                         g_assert_not_reached ();
9085                                 }
9086
9087                                 ip += 5;
9088                                 inline_costs += 5;
9089                                 break;
9090                         }
9091
9092                         /* move the args to allow room for 'this' in the first position */
9093                         while (n--) {
9094                                 --sp;
9095                                 sp [1] = sp [0];
9096                         }
9097
9098                         /* check_call_signature () requires sp[0] to be set */
9099                         this_ins.type = STACK_OBJ;
9100                         sp [0] = &this_ins;
9101                         if (check_call_signature (cfg, fsig, sp))
9102                                 UNVERIFIED;
9103
9104                         iargs [0] = NULL;
9105
9106                         if (mini_class_is_system_array (cmethod->klass)) {
9107                                 g_assert (!vtable_arg);
9108
9109                                 *sp = emit_get_rgctx_method (cfg, context_used,
9110                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9111
9112                                 /* Avoid varargs in the common case */
9113                                 if (fsig->param_count == 1)
9114                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9115                                 else if (fsig->param_count == 2)
9116                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9117                                 else if (fsig->param_count == 3)
9118                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9119                                 else if (fsig->param_count == 4)
9120                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9121                                 else
9122                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9123                         } else if (cmethod->string_ctor) {
9124                                 g_assert (!context_used);
9125                                 g_assert (!vtable_arg);
9126                                 /* we simply pass a null pointer */
9127                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9128                                 /* now call the string ctor */
9129                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9130                         } else {
9131                                 MonoInst* callvirt_this_arg = NULL;
9132
9133                                 if (cmethod->klass->valuetype) {
9134                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9135                                         MONO_EMIT_NEW_VZERO (cfg, iargs [0]->dreg, cmethod->klass);
9136                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9137
9138                                         alloc = NULL;
9139
9140                                         /*
9141                                          * The code generated by mini_emit_virtual_call () expects
9142                                          * iargs [0] to be a boxed instance, but luckily the vcall
9143                                          * will be transformed into a normal call there.
9144                                          */
9145                                 } else if (context_used) {
9146                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9147                                         *sp = alloc;
9148                                 } else {
9149                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9150
9151                                         CHECK_TYPELOAD (cmethod->klass);
9152
9153                                         /*
9154                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9155                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9156                                          * As a workaround, we call class cctors before allocating objects.
9157                                          */
9158                                         if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
9159                                                 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
9160                                                 if (cfg->verbose_level > 2)
9161                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9162                                                 class_inits = g_slist_prepend (class_inits, vtable);
9163                                         }
9164
9165                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9166                                         *sp = alloc;
9167                                 }
9168                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9169
9170                                 if (alloc)
9171                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9172
9173                                 /* Now call the actual ctor */
9174                                 /* Avoid virtual calls to ctors if possible */
9175                                 if (mono_class_is_marshalbyref (cmethod->klass))
9176                                         callvirt_this_arg = sp [0];
9177
9178
9179                                 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
9180                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9181                                                 type_to_eval_stack_type ((cfg), fsig->ret, ins);
9182                                                 *sp = ins;
9183                                                 sp++;
9184                                         }
9185
9186                                         CHECK_CFG_EXCEPTION;
9187                                 } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
9188                                     !disable_inline && mono_method_check_inlining (cfg, cmethod) &&
9189                                     !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE) &&
9190                                     !g_list_find (dont_inline, cmethod)) {
9191                                         int costs;
9192
9193                                         if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, FALSE))) {
9194                                                 cfg->real_offset += 5;
9195                                                 bblock = cfg->cbb;
9196
9197                                                 inline_costs += costs - 5;
9198                                         } else {
9199                                                 INLINE_FAILURE ("inline failure");
9200                                                 // FIXME-VT: Clean this up
9201                                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig))
9202                                                         GSHAREDVT_FAILURE(*ip);
9203                                                 mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
9204                                         }
9205                                 } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (cfg, fsig)) {
9206                                         MonoInst *addr;
9207
9208                                         addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
9209                                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
9210                                 } else if (context_used &&
9211                                                 (!mono_method_is_generic_sharable (cmethod, TRUE) ||
9212                                                         !mono_class_generic_sharing_enabled (cmethod->klass))) {
9213                                         MonoInst *cmethod_addr;
9214
9215                                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
9216                                                 cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9217
9218                                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
9219                                 } else {
9220                                         INLINE_FAILURE ("ctor call");
9221                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
9222                                                                                                           callvirt_this_arg, NULL, vtable_arg);
9223                                 }
9224                         }
9225
9226                         if (alloc == NULL) {
9227                                 /* Valuetype */
9228                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9229                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9230                                 *sp++= ins;
9231                         }
9232                         else
9233                                 *sp++ = alloc;
9234
9235                         ip += 5;
9236                         inline_costs += 5;
9237                         break;
9238                 }
9239                 case CEE_CASTCLASS:
9240                         CHECK_STACK (1);
9241                         --sp;
9242                         CHECK_OPSIZE (5);
9243                         token = read32 (ip + 1);
9244                         klass = mini_get_class (method, token, generic_context);
9245                         CHECK_TYPELOAD (klass);
9246                         if (sp [0]->type != STACK_OBJ)
9247                                 UNVERIFIED;
9248
9249                         context_used = mini_class_check_context_used (cfg, klass);
9250
9251                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
9252                                 MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
9253                                 MonoInst *args [3];
9254
9255                                 /* obj */
9256                                 args [0] = *sp;
9257
9258                                 /* klass */
9259                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
9260
9261                                 /* inline cache*/
9262                                 if (cfg->compile_aot)
9263                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
9264                                 else
9265                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
9266
9267                                 /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
9268                                 *sp++ = mono_emit_method_call (cfg, mono_castclass, args, NULL);
9269                                 ip += 5;
9270                                 inline_costs += 2;
9271                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9272                                 MonoMethod *mono_castclass;
9273                                 MonoInst *iargs [1];
9274                                 int costs;
9275
9276                                 mono_castclass = mono_marshal_get_castclass (klass);
9277                                 iargs [0] = sp [0];
9278
9279                                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
9280                                                            iargs, ip, cfg->real_offset, dont_inline, TRUE);
9281                                 CHECK_CFG_EXCEPTION;
9282                                 g_assert (costs > 0);
9283
9284                                 ip += 5;
9285                                 cfg->real_offset += 5;
9286                                 bblock = cfg->cbb;
9287
9288                                 *sp++ = iargs [0];
9289
9290                                 inline_costs += costs;
9291                         }
9292                         else {
9293                                 ins = handle_castclass (cfg, klass, *sp, context_used);
9294                                 CHECK_CFG_EXCEPTION;
9295                                 bblock = cfg->cbb;
9296                                 *sp ++ = ins;
9297                                 ip += 5;
9298                         }
9299                         break;
9300                 case CEE_ISINST: {
9301                         CHECK_STACK (1);
9302                         --sp;
9303                         CHECK_OPSIZE (5);
9304                         token = read32 (ip + 1);
9305                         klass = mini_get_class (method, token, generic_context);
9306                         CHECK_TYPELOAD (klass);
9307                         if (sp [0]->type != STACK_OBJ)
9308                                 UNVERIFIED;
9309
9310                         context_used = mini_class_check_context_used (cfg, klass);
9311
9312                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
9313                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
9314                                 MonoInst *args [3];
9315
9316                                 /* obj */
9317                                 args [0] = *sp;
9318
9319                                 /* klass */
9320                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
9321
9322                                 /* inline cache*/
9323                                 if (cfg->compile_aot)
9324                                         EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
9325                                 else
9326                                         EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
9327
9328                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
9329                                 ip += 5;
9330                                 inline_costs += 2;
9331                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9332                                 MonoMethod *mono_isinst;
9333                                 MonoInst *iargs [1];
9334                                 int costs;
9335
9336                                 mono_isinst = mono_marshal_get_isinst (klass);
9337                                 iargs [0] = sp [0];
9338
9339                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
9340                                                            iargs, ip, cfg->real_offset, dont_inline, TRUE);
9341                                 CHECK_CFG_EXCEPTION;
9342                                 g_assert (costs > 0);
9343
9344                                 ip += 5;
9345                                 cfg->real_offset += 5;
9346                                 bblock = cfg->cbb;
9347
9348                                 *sp++= iargs [0];
9349
9350                                 inline_costs += costs;
9351                         }
9352                         else {
9353                                 ins = handle_isinst (cfg, klass, *sp, context_used);
9354                                 CHECK_CFG_EXCEPTION;
9355                                 bblock = cfg->cbb;
9356                                 *sp ++ = ins;
9357                                 ip += 5;
9358                         }
9359                         break;
9360                 }
9361                 case CEE_UNBOX_ANY: {
9362                         CHECK_STACK (1);
9363                         --sp;
9364                         CHECK_OPSIZE (5);
9365                         token = read32 (ip + 1);
9366                         klass = mini_get_class (method, token, generic_context);
9367                         CHECK_TYPELOAD (klass);
9368
9369                         mono_save_token_info (cfg, image, token, klass);
9370
9371                         context_used = mini_class_check_context_used (cfg, klass);
9372
9373                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9374                                 *sp = handle_unbox_gsharedvt (cfg, context_used, klass, *sp, &bblock);
9375                                 sp ++;
9376
9377                                 ip += 5;
9378                                 inline_costs += 2;
9379                                 break;
9380                         }
9381
9382                         if (generic_class_is_reference_type (cfg, klass)) {
9383                                 /* CASTCLASS FIXME kill this huge slice of duplicated code*/
9384                                 if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
9385                                         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
9386                                         MonoInst *args [3];
9387
9388                                         /* obj */
9389                                         args [0] = *sp;
9390
9391                                         /* klass */
9392                                         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
9393
9394                                         /* inline cache*/
9395                                         /*FIXME AOT support*/
9396                                         if (cfg->compile_aot)
9397                                                 EMIT_NEW_AOTCONST (cfg, args [2], MONO_PATCH_INFO_CASTCLASS_CACHE, NULL);
9398                                         else
9399                                                 EMIT_NEW_PCONST (cfg, args [2], mono_domain_alloc0 (cfg->domain, sizeof (gpointer)));
9400
9401                                         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
9402                                         *sp++ = mono_emit_method_call (cfg, mono_castclass, args, NULL);
9403                                         ip += 5;
9404                                         inline_costs += 2;
9405                                 } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9406                                         MonoMethod *mono_castclass;
9407                                         MonoInst *iargs [1];
9408                                         int costs;
9409
9410                                         mono_castclass = mono_marshal_get_castclass (klass);
9411                                         iargs [0] = sp [0];
9412
9413                                         costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
9414                                                                                    iargs, ip, cfg->real_offset, dont_inline, TRUE);
9415                                         CHECK_CFG_EXCEPTION;
9416                                         g_assert (costs > 0);
9417
9418                                         ip += 5;
9419                                         cfg->real_offset += 5;
9420                                         bblock = cfg->cbb;
9421
9422                                         *sp++ = iargs [0];
9423                                         inline_costs += costs;
9424                                 } else {
9425                                         ins = handle_castclass (cfg, klass, *sp, context_used);
9426                                         CHECK_CFG_EXCEPTION;
9427                                         bblock = cfg->cbb;
9428                                         *sp ++ = ins;
9429                                         ip += 5;
9430                                 }
9431                                 break;
9432                         }
9433
9434                         if (mono_class_is_nullable (klass)) {
9435                                 ins = handle_unbox_nullable (cfg, *sp, klass, context_used);
9436                                 *sp++= ins;
9437                                 ip += 5;
9438                                 break;
9439                         }
9440
9441                         /* UNBOX */
9442                         ins = handle_unbox (cfg, klass, sp, context_used);
9443                         *sp = ins;
9444
9445                         ip += 5;
9446
9447                         /* LDOBJ */
9448                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9449                         *sp++ = ins;
9450
9451                         inline_costs += 2;
9452                         break;
9453                 }
9454                 case CEE_BOX: {
9455                         MonoInst *val;
9456
9457                         CHECK_STACK (1);
9458                         --sp;
9459                         val = *sp;
9460                         CHECK_OPSIZE (5);
9461                         token = read32 (ip + 1);
9462                         klass = mini_get_class (method, token, generic_context);
9463                         CHECK_TYPELOAD (klass);
9464
9465                         mono_save_token_info (cfg, image, token, klass);
9466
9467                         context_used = mini_class_check_context_used (cfg, klass);
9468
9469                         if (generic_class_is_reference_type (cfg, klass)) {
9470                                 *sp++ = val;
9471                                 ip += 5;
9472                                 break;
9473                         }
9474
9475                         if (klass == mono_defaults.void_class)
9476                                 UNVERIFIED;
9477                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
9478                                 UNVERIFIED;
9479                         /* frequent check in generic code: box (struct), brtrue */
9480
9481                         // FIXME: LLVM can't handle the inconsistent bb linking
9482                         if (!mono_class_is_nullable (klass) &&
9483                                 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) &&
9484                                 (ip [5] == CEE_BRTRUE ||
9485                                  ip [5] == CEE_BRTRUE_S ||
9486                                  ip [5] == CEE_BRFALSE ||
9487                                  ip [5] == CEE_BRFALSE_S)) {
9488                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
9489                                 int dreg;
9490                                 MonoBasicBlock *true_bb, *false_bb;
9491
9492                                 ip += 5;
9493
9494                                 if (cfg->verbose_level > 3) {
9495                                         printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
9496                                         printf ("<box+brtrue opt>\n");
9497                                 }
9498
9499                                 switch (*ip) {
9500                                 case CEE_BRTRUE_S:
9501                                 case CEE_BRFALSE_S:
9502                                         CHECK_OPSIZE (2);
9503                                         ip++;
9504                                         target = ip + 1 + (signed char)(*ip);
9505                                         ip++;
9506                                         break;
9507                                 case CEE_BRTRUE:
9508                                 case CEE_BRFALSE:
9509                                         CHECK_OPSIZE (5);
9510                                         ip++;
9511                                         target = ip + 4 + (gint)(read32 (ip));
9512                                         ip += 4;
9513                                         break;
9514                                 default:
9515                                         g_assert_not_reached ();
9516                                 }
9517
9518                                 /*
9519                                  * We need to link both bblocks, since it is needed for handling stack
9520                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
9521                                  * Branching to only one of them would lead to inconsistencies, so
9522                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
9523                                  */
9524                                 GET_BBLOCK (cfg, true_bb, target);
9525                                 GET_BBLOCK (cfg, false_bb, ip);
9526
9527                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
9528                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
9529
9530                                 if (sp != stack_start) {
9531                                         handle_stack_args (cfg, stack_start, sp - stack_start);
9532                                         sp = stack_start;
9533                                         CHECK_UNVERIFIABLE (cfg);
9534                                 }
9535
9536                                 if (COMPILE_LLVM (cfg)) {
9537                                         dreg = alloc_ireg (cfg);
9538                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
9539                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
9540
9541                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
9542                                 } else {
9543                                         /* The JIT can't eliminate the iconst+compare */
9544                                         MONO_INST_NEW (cfg, ins, OP_BR);
9545                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
9546                                         MONO_ADD_INS (cfg->cbb, ins);
9547                                 }
9548
9549                                 start_new_bblock = 1;
9550                                 break;
9551                         }
9552
9553                         *sp++ = handle_box (cfg, val, klass, context_used, &bblock);
9554
9555                         CHECK_CFG_EXCEPTION;
9556                         ip += 5;
9557                         inline_costs += 1;
9558                         break;
9559                 }
9560                 case CEE_UNBOX: {
9561                         CHECK_STACK (1);
9562                         --sp;
9563                         CHECK_OPSIZE (5);
9564                         token = read32 (ip + 1);
9565                         klass = mini_get_class (method, token, generic_context);
9566                         CHECK_TYPELOAD (klass);
9567
9568                         mono_save_token_info (cfg, image, token, klass);
9569
9570                         context_used = mini_class_check_context_used (cfg, klass);
9571
9572                         if (mono_class_is_nullable (klass)) {
9573                                 MonoInst *val;
9574
9575                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
9576                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
9577
9578                                 *sp++= ins;
9579                         } else {
9580                                 ins = handle_unbox (cfg, klass, sp, context_used);
9581                                 *sp++ = ins;
9582                         }
9583                         ip += 5;
9584                         inline_costs += 2;
9585                         break;
9586                 }
9587                 case CEE_LDFLD:
9588                 case CEE_LDFLDA:
9589                 case CEE_STFLD:
9590                 case CEE_LDSFLD:
9591                 case CEE_LDSFLDA:
9592                 case CEE_STSFLD: {
9593                         MonoClassField *field;
9594 #ifndef DISABLE_REMOTING
9595                         int costs;
9596 #endif
9597                         guint foffset;
9598                         gboolean is_instance;
9599                         int op;
9600                         gpointer addr = NULL;
9601                         gboolean is_special_static;
9602                         MonoType *ftype;
9603                         MonoInst *store_val = NULL;
9604
9605                         op = *ip;
9606                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
9607                         if (is_instance) {
9608                                 if (op == CEE_STFLD) {
9609                                         CHECK_STACK (2);
9610                                         sp -= 2;
9611                                         store_val = sp [1];
9612                                 } else {
9613                                         CHECK_STACK (1);
9614                                         --sp;
9615                                 }
9616                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
9617                                         UNVERIFIED;
9618                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
9619                                         UNVERIFIED;
9620                         } else {
9621                                 if (op == CEE_STSFLD) {
9622                                         CHECK_STACK (1);
9623                                         sp--;
9624                                         store_val = sp [0];
9625                                 }
9626                         }
9627
9628                         CHECK_OPSIZE (5);
9629                         token = read32 (ip + 1);
9630                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
9631                                 field = mono_method_get_wrapper_data (method, token);
9632                                 klass = field->parent;
9633                         }
9634                         else {
9635                                 field = mono_field_from_token (image, token, &klass, generic_context);
9636                         }
9637                         if (!field)
9638                                 LOAD_ERROR;
9639                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
9640                                 FIELD_ACCESS_FAILURE;
9641                         mono_class_init (klass);
9642
9643                         if (is_instance && *ip != CEE_LDFLDA && is_magic_tls_access (field))
9644                                 UNVERIFIED;
9645
9646                         /* if the class is Critical then transparent code cannot access it's fields */
9647                         if (!is_instance && mono_security_core_clr_enabled ())
9648                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
9649
9650                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
9651                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
9652                         if (mono_security_core_clr_enabled ())
9653                                 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
9654                         */
9655
9656                         /*
9657                          * LDFLD etc. is usable on static fields as well, so convert those cases to
9658                          * the static case.
9659                          */
9660                         if (is_instance && field->type->attrs & FIELD_ATTRIBUTE_STATIC) {
9661                                 switch (op) {
9662                                 case CEE_LDFLD:
9663                                         op = CEE_LDSFLD;
9664                                         break;
9665                                 case CEE_STFLD:
9666                                         op = CEE_STSFLD;
9667                                         break;
9668                                 case CEE_LDFLDA:
9669                                         op = CEE_LDSFLDA;
9670                                         break;
9671                                 default:
9672                                         g_assert_not_reached ();
9673                                 }
9674                                 is_instance = FALSE;
9675                         }
9676
9677                         context_used = mini_class_check_context_used (cfg, klass);
9678
9679                         /* INSTANCE CASE */
9680
9681                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
9682                         if (op == CEE_STFLD) {
9683                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
9684                                         UNVERIFIED;
9685 #ifndef DISABLE_REMOTING
9686                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
9687                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
9688                                         MonoInst *iargs [5];
9689
9690                                         GSHAREDVT_FAILURE (op);
9691
9692                                         iargs [0] = sp [0];
9693                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
9694                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
9695                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
9696                                                     field->offset);
9697                                         iargs [4] = sp [1];
9698
9699                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
9700                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
9701                                                                        iargs, ip, cfg->real_offset, dont_inline, TRUE);
9702                                                 CHECK_CFG_EXCEPTION;
9703                                                 g_assert (costs > 0);
9704
9705                                                 cfg->real_offset += 5;
9706                                                 bblock = cfg->cbb;
9707
9708                                                 inline_costs += costs;
9709                                         } else {
9710                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
9711                                         }
9712                                 } else
9713 #endif
9714                                 {
9715                                         MonoInst *store;
9716
9717                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
9718
9719                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9720                                                 MonoInst *offset_ins;
9721
9722                                                 context_used = mini_class_check_context_used (cfg, klass);
9723
9724                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9725                                                 dreg = alloc_ireg_mp (cfg);
9726                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9727                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
9728                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
9729                                         } else {
9730                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
9731                                         }
9732                                         if (sp [0]->opcode != OP_LDADDR)
9733                                                 store->flags |= MONO_INST_FAULT;
9734
9735                                 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)) {
9736                                         /* insert call to write barrier */
9737                                         MonoInst *ptr;
9738                                         int dreg;
9739
9740                                         dreg = alloc_ireg_mp (cfg);
9741                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
9742                                         emit_write_barrier (cfg, ptr, sp [1], -1);
9743                                 }
9744
9745                                         store->flags |= ins_flag;
9746                                 }
9747                                 ins_flag = 0;
9748                                 ip += 5;
9749                                 break;
9750                         }
9751
9752 #ifndef DISABLE_REMOTING
9753                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
9754                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
9755                                 MonoInst *iargs [4];
9756
9757                                 GSHAREDVT_FAILURE (op);
9758
9759                                 iargs [0] = sp [0];
9760                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
9761                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
9762                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
9763                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
9764                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
9765                                                                                    iargs, ip, cfg->real_offset, dont_inline, TRUE);
9766                                         CHECK_CFG_EXCEPTION;
9767                                         bblock = cfg->cbb;
9768                                         g_assert (costs > 0);
9769
9770                                         cfg->real_offset += 5;
9771
9772                                         *sp++ = iargs [0];
9773
9774                                         inline_costs += costs;
9775                                 } else {
9776                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
9777                                         *sp++ = ins;
9778                                 }
9779                         } else
9780 #endif
9781                         if (is_instance) {
9782                                 if (sp [0]->type == STACK_VTYPE) {
9783                                         MonoInst *var;
9784
9785                                         /* Have to compute the address of the variable */
9786
9787                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
9788                                         if (!var)
9789                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
9790                                         else
9791                                                 g_assert (var->klass == klass);
9792
9793                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
9794                                         sp [0] = ins;
9795                                 }
9796
9797                                 if (op == CEE_LDFLDA) {
9798                                         if (is_magic_tls_access (field)) {
9799                                                 GSHAREDVT_FAILURE (*ip);
9800                                                 ins = sp [0];
9801                                                 *sp++ = create_magic_tls_access (cfg, field, &cached_tls_addr, ins);
9802                                         } else {
9803                                                 if (sp [0]->type == STACK_OBJ) {
9804                                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
9805                                                         MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
9806                                                 }
9807
9808                                                 dreg = alloc_ireg_mp (cfg);
9809
9810                                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
9811                                                         MonoInst *offset_ins;
9812
9813                                                         offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9814                                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9815                                                 } else {
9816                                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
9817                                                 }
9818                                                 ins->klass = mono_class_from_mono_type (field->type);
9819                                                 ins->type = STACK_MP;
9820                                                 *sp++ = ins;
9821                                         }
9822                                 } else {
9823                                         MonoInst *load;
9824
9825                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
9826
9827                                         if (mini_is_gsharedvt_klass (cfg, klass)) {
9828                                                 MonoInst *offset_ins;
9829
9830                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9831                                                 dreg = alloc_ireg_mp (cfg);
9832                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
9833                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
9834                                         } else {
9835                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
9836                                         }
9837                                         load->flags |= ins_flag;
9838                                         if (sp [0]->opcode != OP_LDADDR)
9839                                                 load->flags |= MONO_INST_FAULT;
9840                                         *sp++ = load;
9841                                 }
9842                         }
9843
9844                         if (is_instance) {
9845                                 ins_flag = 0;
9846                                 ip += 5;
9847                                 break;
9848                         }
9849
9850                         /* STATIC CASE */
9851
9852                         /*
9853                          * We can only support shared generic static
9854                          * field access on architectures where the
9855                          * trampoline code has been extended to handle
9856                          * the generic class init.
9857                          */
9858 #ifndef MONO_ARCH_VTABLE_REG
9859                         GENERIC_SHARING_FAILURE (op);
9860 #endif
9861
9862                         context_used = mini_class_check_context_used (cfg, klass);
9863
9864                         ftype = mono_field_get_type (field);
9865
9866                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL)
9867                                 UNVERIFIED;
9868
9869                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
9870                          * to be called here.
9871                          */
9872                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
9873                                 mono_class_vtable (cfg->domain, klass);
9874                                 CHECK_TYPELOAD (klass);
9875                         }
9876                         mono_domain_lock (cfg->domain);
9877                         if (cfg->domain->special_static_fields)
9878                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
9879                         mono_domain_unlock (cfg->domain);
9880
9881                         is_special_static = mono_class_field_is_special_static (field);
9882
9883                         /* Generate IR to compute the field address */
9884                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && mono_get_thread_intrinsic (cfg) && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
9885                                 /*
9886                                  * Fast access to TLS data
9887                                  * Inline version of get_thread_static_data () in
9888                                  * threads.c.
9889                                  */
9890                                 guint32 offset;
9891                                 int idx, static_data_reg, array_reg, dreg;
9892                                 MonoInst *thread_ins;
9893
9894                                 GSHAREDVT_FAILURE (op);
9895
9896                                 // offset &= 0x7fffffff;
9897                                 // idx = (offset >> 24) - 1;
9898                                 //      return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
9899
9900                                 thread_ins = mono_get_thread_intrinsic (cfg);
9901                                 MONO_ADD_INS (cfg->cbb, thread_ins);
9902                                 static_data_reg = alloc_ireg (cfg);
9903                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
9904
9905                                 if (cfg->compile_aot) {
9906                                         int offset_reg, offset2_reg, idx_reg;
9907
9908                                         /* For TLS variables, this will return the TLS offset */
9909                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
9910                                         offset_reg = ins->dreg;
9911                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
9912                                         idx_reg = alloc_ireg (cfg);
9913                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_IMM, idx_reg, offset_reg, 24);
9914                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISUB_IMM, idx_reg, idx_reg, 1);
9915                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
9916                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
9917                                         array_reg = alloc_ireg (cfg);
9918                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
9919                                         offset2_reg = alloc_ireg (cfg);
9920                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset_reg, 0xffffff);
9921                                         dreg = alloc_ireg (cfg);
9922                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
9923                                 } else {
9924                                         offset = (gsize)addr & 0x7fffffff;
9925                                         idx = (offset >> 24) - 1;
9926
9927                                         array_reg = alloc_ireg (cfg);
9928                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
9929                                         dreg = alloc_ireg (cfg);
9930                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, (offset & 0xffffff));
9931                                 }
9932                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
9933                                         (cfg->compile_aot && is_special_static) ||
9934                                         (context_used && is_special_static)) {
9935                                 MonoInst *iargs [2];
9936
9937                                 g_assert (field->parent);
9938                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9939                                 if (context_used) {
9940                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
9941                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
9942                                 } else {
9943                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
9944                                 }
9945                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
9946                         } else if (context_used) {
9947                                 MonoInst *static_data;
9948
9949                                 /*
9950                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
9951                                         method->klass->name_space, method->klass->name, method->name,
9952                                         depth, field->offset);
9953                                 */
9954
9955                                 if (mono_class_needs_cctor_run (klass, method))
9956                                         emit_generic_class_init (cfg, klass);
9957
9958                                 /*
9959                                  * The pointer we're computing here is
9960                                  *
9961                                  *   super_info.static_data + field->offset
9962                                  */
9963                                 static_data = emit_get_rgctx_klass (cfg, context_used,
9964                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
9965
9966                                 if (mini_is_gsharedvt_klass (cfg, klass)) {
9967                                         MonoInst *offset_ins;
9968
9969                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
9970                                         dreg = alloc_ireg_mp (cfg);
9971                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
9972                                 } else if (field->offset == 0) {
9973                                         ins = static_data;
9974                                 } else {
9975                                         int addr_reg = mono_alloc_preg (cfg);
9976                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
9977                                 }
9978                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
9979                                 MonoInst *iargs [2];
9980
9981                                 g_assert (field->parent);
9982                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9983                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
9984                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
9985                         } else {
9986                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
9987
9988                                 CHECK_TYPELOAD (klass);
9989                                 if (!addr) {
9990                                         if (mini_field_access_needs_cctor_run (cfg, method, vtable)) {
9991                                                 if (!(g_slist_find (class_inits, vtable))) {
9992                                                         mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
9993                                                         if (cfg->verbose_level > 2)
9994                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
9995                                                         class_inits = g_slist_prepend (class_inits, vtable);
9996                                                 }
9997                                         } else {
9998                                                 if (cfg->run_cctors) {
9999                                                         MonoException *ex;
10000                                                         /* This makes so that inline cannot trigger */
10001                                                         /* .cctors: too many apps depend on them */
10002                                                         /* running with a specific order... */
10003                                                         if (! vtable->initialized)
10004                                                                 INLINE_FAILURE ("class init");
10005                                                         ex = mono_runtime_class_init_full (vtable, FALSE);
10006                                                         if (ex) {
10007                                                                 set_exception_object (cfg, ex);
10008                                                                 goto exception_exit;
10009                                                         }
10010                                                 }
10011                                         }
10012                                         addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10013
10014                                         if (cfg->compile_aot)
10015                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10016                                         else
10017                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10018                                 } else {
10019                                         MonoInst *iargs [1];
10020                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10021                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10022                                 }
10023                         }
10024
10025                         /* Generate IR to do the actual load/store operation */
10026
10027                         if (op == CEE_LDSFLDA) {
10028                                 ins->klass = mono_class_from_mono_type (ftype);
10029                                 ins->type = STACK_PTR;
10030                                 *sp++ = ins;
10031                         } else if (op == CEE_STSFLD) {
10032                                 MonoInst *store;
10033
10034                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10035                                 store->flags |= ins_flag;
10036                         } else {
10037                                 gboolean is_const = FALSE;
10038                                 MonoVTable *vtable = NULL;
10039                                 gpointer addr = NULL;
10040
10041                                 if (!context_used) {
10042                                         vtable = mono_class_vtable (cfg->domain, klass);
10043                                         CHECK_TYPELOAD (klass);
10044                                 }
10045                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10046                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10047                                         int ro_type = ftype->type;
10048                                         if (!addr)
10049                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10050                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10051                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10052                                         }
10053
10054                                         GSHAREDVT_FAILURE (op);
10055
10056                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10057                                         is_const = TRUE;
10058                                         switch (ro_type) {
10059                                         case MONO_TYPE_BOOLEAN:
10060                                         case MONO_TYPE_U1:
10061                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10062                                                 sp++;
10063                                                 break;
10064                                         case MONO_TYPE_I1:
10065                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10066                                                 sp++;
10067                                                 break;
10068                                         case MONO_TYPE_CHAR:
10069                                         case MONO_TYPE_U2:
10070                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10071                                                 sp++;
10072                                                 break;
10073                                         case MONO_TYPE_I2:
10074                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10075                                                 sp++;
10076                                                 break;
10077                                                 break;
10078                                         case MONO_TYPE_I4:
10079                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10080                                                 sp++;
10081                                                 break;
10082                                         case MONO_TYPE_U4:
10083                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10084                                                 sp++;
10085                                                 break;
10086                                         case MONO_TYPE_I:
10087                                         case MONO_TYPE_U:
10088                                         case MONO_TYPE_PTR:
10089                                         case MONO_TYPE_FNPTR:
10090                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10091                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10092                                                 sp++;
10093                                                 break;
10094                                         case MONO_TYPE_STRING:
10095                                         case MONO_TYPE_OBJECT:
10096                                         case MONO_TYPE_CLASS:
10097                                         case MONO_TYPE_SZARRAY:
10098                                         case MONO_TYPE_ARRAY:
10099                                                 if (!mono_gc_is_moving ()) {
10100                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10101                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10102                                                         sp++;
10103                                                 } else {
10104                                                         is_const = FALSE;
10105                                                 }
10106                                                 break;
10107                                         case MONO_TYPE_I8:
10108                                         case MONO_TYPE_U8:
10109                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10110                                                 sp++;
10111                                                 break;
10112                                         case MONO_TYPE_R4:
10113                                         case MONO_TYPE_R8:
10114                                         case MONO_TYPE_VALUETYPE:
10115                                         default:
10116                                                 is_const = FALSE;
10117                                                 break;
10118                                         }
10119                                 }
10120
10121                                 if (!is_const) {
10122                                         MonoInst *load;
10123
10124                                         CHECK_STACK_OVF (1);
10125
10126                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10127                                         load->flags |= ins_flag;
10128                                         ins_flag = 0;
10129                                         *sp++ = load;
10130                                 }
10131                         }
10132                         ins_flag = 0;
10133                         ip += 5;
10134                         break;
10135                 }
10136                 case CEE_STOBJ:
10137                         CHECK_STACK (2);
10138                         sp -= 2;
10139                         CHECK_OPSIZE (5);
10140                         token = read32 (ip + 1);
10141                         klass = mini_get_class (method, token, generic_context);
10142                         CHECK_TYPELOAD (klass);
10143                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10144                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
10145                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
10146                                         generic_class_is_reference_type (cfg, klass)) {
10147                                 /* insert call to write barrier */
10148                                 emit_write_barrier (cfg, sp [0], sp [1], -1);
10149                         }
10150                         ins_flag = 0;
10151                         ip += 5;
10152                         inline_costs += 1;
10153                         break;
10154
10155                         /*
10156                          * Array opcodes
10157                          */
10158                 case CEE_NEWARR: {
10159                         MonoInst *len_ins;
10160                         const char *data_ptr;
10161                         int data_size = 0;
10162                         guint32 field_token;
10163
10164                         CHECK_STACK (1);
10165                         --sp;
10166
10167                         CHECK_OPSIZE (5);
10168                         token = read32 (ip + 1);
10169
10170                         klass = mini_get_class (method, token, generic_context);
10171                         CHECK_TYPELOAD (klass);
10172
10173                         context_used = mini_class_check_context_used (cfg, klass);
10174
10175                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10176                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_I4);
10177                                 ins->sreg1 = sp [0]->dreg;
10178                                 ins->type = STACK_I4;
10179                                 ins->dreg = alloc_ireg (cfg);
10180                                 MONO_ADD_INS (cfg->cbb, ins);
10181                                 *sp = mono_decompose_opcode (cfg, ins);
10182                         }
10183
10184                         if (context_used) {
10185                                 MonoInst *args [3];
10186                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10187                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10188
10189                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10190
10191                                 /* vtable */
10192                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
10193                                         array_class, MONO_RGCTX_INFO_VTABLE);
10194                                 /* array len */
10195                                 args [1] = sp [0];
10196
10197                                 if (managed_alloc)
10198                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10199                                 else
10200                                         ins = mono_emit_jit_icall (cfg, mono_array_new_specific, args);
10201                         } else {
10202                                 if (cfg->opt & MONO_OPT_SHARED) {
10203                                         /* Decompose now to avoid problems with references to the domainvar */
10204                                         MonoInst *iargs [3];
10205
10206                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10207                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10208                                         iargs [2] = sp [0];
10209
10210                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
10211                                 } else {
10212                                         /* Decompose later since it is needed by abcrem */
10213                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10214                                         mono_class_vtable (cfg->domain, array_type);
10215                                         CHECK_TYPELOAD (array_type);
10216
10217                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10218                                         ins->dreg = alloc_ireg_ref (cfg);
10219                                         ins->sreg1 = sp [0]->dreg;
10220                                         ins->inst_newa_class = klass;
10221                                         ins->type = STACK_OBJ;
10222                                         ins->klass = array_type;
10223                                         MONO_ADD_INS (cfg->cbb, ins);
10224                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10225                                         cfg->cbb->has_array_access = TRUE;
10226
10227                                         /* Needed so mono_emit_load_get_addr () gets called */
10228                                         mono_get_got_var (cfg);
10229                                 }
10230                         }
10231
10232                         len_ins = sp [0];
10233                         ip += 5;
10234                         *sp++ = ins;
10235                         inline_costs += 1;
10236
10237                         /*
10238                          * we inline/optimize the initialization sequence if possible.
10239                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10240                          * for small sizes open code the memcpy
10241                          * ensure the rva field is big enough
10242                          */
10243                         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))) {
10244                                 MonoMethod *memcpy_method = get_memcpy_method ();
10245                                 MonoInst *iargs [3];
10246                                 int add_reg = alloc_ireg_mp (cfg);
10247
10248                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, G_STRUCT_OFFSET (MonoArray, vector));
10249                                 if (cfg->compile_aot) {
10250                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10251                                 } else {
10252                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10253                                 }
10254                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10255                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10256                                 ip += 11;
10257                         }
10258
10259                         break;
10260                 }
10261                 case CEE_LDLEN:
10262                         CHECK_STACK (1);
10263                         --sp;
10264                         if (sp [0]->type != STACK_OBJ)
10265                                 UNVERIFIED;
10266
10267                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10268                         ins->dreg = alloc_preg (cfg);
10269                         ins->sreg1 = sp [0]->dreg;
10270                         ins->type = STACK_I4;
10271                         /* This flag will be inherited by the decomposition */
10272                         ins->flags |= MONO_INST_FAULT;
10273                         MONO_ADD_INS (cfg->cbb, ins);
10274                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10275                         cfg->cbb->has_array_access = TRUE;
10276                         ip ++;
10277                         *sp++ = ins;
10278                         break;
10279                 case CEE_LDELEMA:
10280                         CHECK_STACK (2);
10281                         sp -= 2;
10282                         CHECK_OPSIZE (5);
10283                         if (sp [0]->type != STACK_OBJ)
10284                                 UNVERIFIED;
10285
10286                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10287
10288                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10289                         CHECK_TYPELOAD (klass);
10290                         /* we need to make sure that this array is exactly the type it needs
10291                          * to be for correctness. the wrappers are lax with their usage
10292                          * so we need to ignore them here
10293                          */
10294                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10295                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10296                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10297                                 CHECK_TYPELOAD (array_class);
10298                         }
10299
10300                         readonly = FALSE;
10301                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10302                         *sp++ = ins;
10303                         ip += 5;
10304                         break;
10305                 case CEE_LDELEM:
10306                 case CEE_LDELEM_I1:
10307                 case CEE_LDELEM_U1:
10308                 case CEE_LDELEM_I2:
10309                 case CEE_LDELEM_U2:
10310                 case CEE_LDELEM_I4:
10311                 case CEE_LDELEM_U4:
10312                 case CEE_LDELEM_I8:
10313                 case CEE_LDELEM_I:
10314                 case CEE_LDELEM_R4:
10315                 case CEE_LDELEM_R8:
10316                 case CEE_LDELEM_REF: {
10317                         MonoInst *addr;
10318
10319                         CHECK_STACK (2);
10320                         sp -= 2;
10321
10322                         if (*ip == CEE_LDELEM) {
10323                                 CHECK_OPSIZE (5);
10324                                 token = read32 (ip + 1);
10325                                 klass = mini_get_class (method, token, generic_context);
10326                                 CHECK_TYPELOAD (klass);
10327                                 mono_class_init (klass);
10328                         }
10329                         else
10330                                 klass = array_access_to_klass (*ip);
10331
10332                         if (sp [0]->type != STACK_OBJ)
10333                                 UNVERIFIED;
10334
10335                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10336
10337                         if (mini_is_gsharedvt_klass (cfg, klass)) {
10338                                 // FIXME-VT: OP_ICONST optimization
10339                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10340                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10341                                 ins->opcode = OP_LOADV_MEMBASE;
10342                         } else if (sp [1]->opcode == OP_ICONST) {
10343                                 int array_reg = sp [0]->dreg;
10344                                 int index_reg = sp [1]->dreg;
10345                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
10346
10347                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
10348                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
10349                         } else {
10350                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10351                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10352                         }
10353                         *sp++ = ins;
10354                         if (*ip == CEE_LDELEM)
10355                                 ip += 5;
10356                         else
10357                                 ++ip;
10358                         break;
10359                 }
10360                 case CEE_STELEM_I:
10361                 case CEE_STELEM_I1:
10362                 case CEE_STELEM_I2:
10363                 case CEE_STELEM_I4:
10364                 case CEE_STELEM_I8:
10365                 case CEE_STELEM_R4:
10366                 case CEE_STELEM_R8:
10367                 case CEE_STELEM_REF:
10368                 case CEE_STELEM: {
10369                         CHECK_STACK (3);
10370                         sp -= 3;
10371
10372                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10373
10374                         if (*ip == CEE_STELEM) {
10375                                 CHECK_OPSIZE (5);
10376                                 token = read32 (ip + 1);
10377                                 klass = mini_get_class (method, token, generic_context);
10378                                 CHECK_TYPELOAD (klass);
10379                                 mono_class_init (klass);
10380                         }
10381                         else
10382                                 klass = array_access_to_klass (*ip);
10383
10384                         if (sp [0]->type != STACK_OBJ)
10385                                 UNVERIFIED;
10386
10387                         emit_array_store (cfg, klass, sp, TRUE);
10388
10389                         if (*ip == CEE_STELEM)
10390                                 ip += 5;
10391                         else
10392                                 ++ip;
10393                         inline_costs += 1;
10394                         break;
10395                 }
10396                 case CEE_CKFINITE: {
10397                         CHECK_STACK (1);
10398                         --sp;
10399
10400                         MONO_INST_NEW (cfg, ins, OP_CKFINITE);
10401                         ins->sreg1 = sp [0]->dreg;
10402                         ins->dreg = alloc_freg (cfg);
10403                         ins->type = STACK_R8;
10404                         MONO_ADD_INS (bblock, ins);
10405
10406                         *sp++ = mono_decompose_opcode (cfg, ins);
10407
10408                         ++ip;
10409                         break;
10410                 }
10411                 case CEE_REFANYVAL: {
10412                         MonoInst *src_var, *src;
10413
10414                         int klass_reg = alloc_preg (cfg);
10415                         int dreg = alloc_preg (cfg);
10416
10417                         GSHAREDVT_FAILURE (*ip);
10418
10419                         CHECK_STACK (1);
10420                         MONO_INST_NEW (cfg, ins, *ip);
10421                         --sp;
10422                         CHECK_OPSIZE (5);
10423                         klass = mono_class_get_full (image, read32 (ip + 1), generic_context);
10424                         CHECK_TYPELOAD (klass);
10425                         mono_class_init (klass);
10426
10427                         context_used = mini_class_check_context_used (cfg, klass);
10428
10429                         // FIXME:
10430                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
10431                         if (!src_var)
10432                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
10433                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
10434                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass));
10435
10436                         if (context_used) {
10437                                 MonoInst *klass_ins;
10438
10439                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
10440                                                 klass, MONO_RGCTX_INFO_KLASS);
10441
10442                                 // FIXME:
10443                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
10444                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
10445                         } else {
10446                                 mini_emit_class_check (cfg, klass_reg, klass);
10447                         }
10448                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, value));
10449                         ins->type = STACK_MP;
10450                         *sp++ = ins;
10451                         ip += 5;
10452                         break;
10453                 }
10454                 case CEE_MKREFANY: {
10455                         MonoInst *loc, *addr;
10456
10457                         GSHAREDVT_FAILURE (*ip);
10458
10459                         CHECK_STACK (1);
10460                         MONO_INST_NEW (cfg, ins, *ip);
10461                         --sp;
10462                         CHECK_OPSIZE (5);
10463                         klass = mono_class_get_full (image, read32 (ip + 1), generic_context);
10464                         CHECK_TYPELOAD (klass);
10465                         mono_class_init (klass);
10466
10467                         context_used = mini_class_check_context_used (cfg, klass);
10468
10469                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
10470                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
10471
10472                         if (context_used) {
10473                                 MonoInst *const_ins;
10474                                 int type_reg = alloc_preg (cfg);
10475
10476                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
10477                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
10478                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, G_STRUCT_OFFSET (MonoClass, byval_arg));
10479                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
10480                         } else if (cfg->compile_aot) {
10481                                 int const_reg = alloc_preg (cfg);
10482                                 int type_reg = alloc_preg (cfg);
10483
10484                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
10485                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
10486                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, G_STRUCT_OFFSET (MonoClass, byval_arg));
10487                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
10488                         } else {
10489                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
10490                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), klass);
10491                         }
10492                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
10493
10494                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
10495                         ins->type = STACK_VTYPE;
10496                         ins->klass = mono_defaults.typed_reference_class;
10497                         *sp++ = ins;
10498                         ip += 5;
10499                         break;
10500                 }
10501                 case CEE_LDTOKEN: {
10502                         gpointer handle;
10503                         MonoClass *handle_class;
10504
10505                         CHECK_STACK_OVF (1);
10506
10507                         CHECK_OPSIZE (5);
10508                         n = read32 (ip + 1);
10509
10510                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
10511                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
10512                                 handle = mono_method_get_wrapper_data (method, n);
10513                                 handle_class = mono_method_get_wrapper_data (method, n + 1);
10514                                 if (handle_class == mono_defaults.typehandle_class)
10515                                         handle = &((MonoClass*)handle)->byval_arg;
10516                         }
10517                         else {
10518                                 handle = mono_ldtoken (image, n, &handle_class, generic_context);
10519                         }
10520                         if (!handle)
10521                                 LOAD_ERROR;
10522                         mono_class_init (handle_class);
10523                         if (cfg->generic_sharing_context) {
10524                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
10525                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
10526                                         /* This case handles ldtoken
10527                                            of an open type, like for
10528                                            typeof(Gen<>). */
10529                                         context_used = 0;
10530                                 } else if (handle_class == mono_defaults.typehandle_class) {
10531                                         /* If we get a MONO_TYPE_CLASS
10532                                            then we need to provide the
10533                                            open type, not an
10534                                            instantiation of it. */
10535                                         if (mono_type_get_type (handle) == MONO_TYPE_CLASS)
10536                                                 context_used = 0;
10537                                         else
10538                                                 context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type (handle));
10539                                 } else if (handle_class == mono_defaults.fieldhandle_class)
10540                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
10541                                 else if (handle_class == mono_defaults.methodhandle_class)
10542                                         context_used = mini_method_check_context_used (cfg, handle);
10543                                 else
10544                                         g_assert_not_reached ();
10545                         }
10546
10547                         if ((cfg->opt & MONO_OPT_SHARED) &&
10548                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
10549                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
10550                                 MonoInst *addr, *vtvar, *iargs [3];
10551                                 int method_context_used;
10552
10553                                 method_context_used = mini_method_check_context_used (cfg, method);
10554
10555                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
10556
10557                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10558                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
10559                                 if (method_context_used) {
10560                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
10561                                                 method, MONO_RGCTX_INFO_METHOD);
10562                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
10563                                 } else {
10564                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
10565                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
10566                                 }
10567                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
10568
10569                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
10570
10571                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
10572                         } else {
10573                                 if ((ip + 5 < end) && ip_in_bb (cfg, bblock, ip + 5) &&
10574                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
10575                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
10576                                         (cmethod->klass == mono_defaults.monotype_class->parent) &&
10577                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
10578                                         MonoClass *tclass = mono_class_from_mono_type (handle);
10579
10580                                         mono_class_init (tclass);
10581                                         if (context_used) {
10582                                                 ins = emit_get_rgctx_klass (cfg, context_used,
10583                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
10584                                         } else if (cfg->compile_aot) {
10585                                                 if (method->wrapper_type) {
10586                                                         if (mono_class_get (tclass->image, tclass->type_token) == tclass && !generic_context) {
10587                                                                 /* Special case for static synchronized wrappers */
10588                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
10589                                                         } else {
10590                                                                 /* FIXME: n is not a normal token */
10591                                                                 cfg->disable_aot = TRUE;
10592                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
10593                                                         }
10594                                                 } else {
10595                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
10596                                                 }
10597                                         } else {
10598                                                 EMIT_NEW_PCONST (cfg, ins, mono_type_get_object (cfg->domain, handle));
10599                                         }
10600                                         ins->type = STACK_OBJ;
10601                                         ins->klass = cmethod->klass;
10602                                         ip += 5;
10603                                 } else {
10604                                         MonoInst *addr, *vtvar;
10605
10606                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
10607
10608                                         if (context_used) {
10609                                                 if (handle_class == mono_defaults.typehandle_class) {
10610                                                         ins = emit_get_rgctx_klass (cfg, context_used,
10611                                                                         mono_class_from_mono_type (handle),
10612                                                                         MONO_RGCTX_INFO_TYPE);
10613                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
10614                                                         ins = emit_get_rgctx_method (cfg, context_used,
10615                                                                         handle, MONO_RGCTX_INFO_METHOD);
10616                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
10617                                                         ins = emit_get_rgctx_field (cfg, context_used,
10618                                                                         handle, MONO_RGCTX_INFO_CLASS_FIELD);
10619                                                 } else {
10620                                                         g_assert_not_reached ();
10621                                                 }
10622                                         } else if (cfg->compile_aot) {
10623                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
10624                                         } else {
10625                                                 EMIT_NEW_PCONST (cfg, ins, handle);
10626                                         }
10627                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
10628                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
10629                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
10630                                 }
10631                         }
10632
10633                         *sp++ = ins;
10634                         ip += 5;
10635                         break;
10636                 }
10637                 case CEE_THROW:
10638                         CHECK_STACK (1);
10639                         MONO_INST_NEW (cfg, ins, OP_THROW);
10640                         --sp;
10641                         ins->sreg1 = sp [0]->dreg;
10642                         ip++;
10643                         bblock->out_of_line = TRUE;
10644                         MONO_ADD_INS (bblock, ins);
10645                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
10646                         MONO_ADD_INS (bblock, ins);
10647                         sp = stack_start;
10648
10649                         link_bblock (cfg, bblock, end_bblock);
10650                         start_new_bblock = 1;
10651                         break;
10652                 case CEE_ENDFINALLY:
10653                         /* mono_save_seq_point_info () depends on this */
10654                         if (sp != stack_start)
10655                                 emit_seq_point (cfg, method, ip, FALSE);
10656                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
10657                         MONO_ADD_INS (bblock, ins);
10658                         ip++;
10659                         start_new_bblock = 1;
10660
10661                         /*
10662                          * Control will leave the method so empty the stack, otherwise
10663                          * the next basic block will start with a nonempty stack.
10664                          */
10665                         while (sp != stack_start) {
10666                                 sp--;
10667                         }
10668                         break;
10669                 case CEE_LEAVE:
10670                 case CEE_LEAVE_S: {
10671                         GList *handlers;
10672
10673                         if (*ip == CEE_LEAVE) {
10674                                 CHECK_OPSIZE (5);
10675                                 target = ip + 5 + (gint32)read32(ip + 1);
10676                         } else {
10677                                 CHECK_OPSIZE (2);
10678                                 target = ip + 2 + (signed char)(ip [1]);
10679                         }
10680
10681                         /* empty the stack */
10682                         while (sp != stack_start) {
10683                                 sp--;
10684                         }
10685
10686                         /*
10687                          * If this leave statement is in a catch block, check for a
10688                          * pending exception, and rethrow it if necessary.
10689                          * We avoid doing this in runtime invoke wrappers, since those are called
10690                          * by native code which excepts the wrapper to catch all exceptions.
10691                          */
10692                         for (i = 0; i < header->num_clauses; ++i) {
10693                                 MonoExceptionClause *clause = &header->clauses [i];
10694
10695                                 /*
10696                                  * Use <= in the final comparison to handle clauses with multiple
10697                                  * leave statements, like in bug #78024.
10698                                  * The ordering of the exception clauses guarantees that we find the
10699                                  * innermost clause.
10700                                  */
10701                                 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) {
10702                                         MonoInst *exc_ins;
10703                                         MonoBasicBlock *dont_throw;
10704
10705                                         /*
10706                                           MonoInst *load;
10707
10708                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
10709                                         */
10710
10711                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
10712
10713                                         NEW_BBLOCK (cfg, dont_throw);
10714
10715                                         /*
10716                                          * Currently, we always rethrow the abort exception, despite the
10717                                          * fact that this is not correct. See thread6.cs for an example.
10718                                          * But propagating the abort exception is more important than
10719                                          * getting the sematics right.
10720                                          */
10721                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
10722                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
10723                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
10724
10725                                         MONO_START_BB (cfg, dont_throw);
10726                                         bblock = cfg->cbb;
10727                                 }
10728                         }
10729
10730                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
10731                                 GList *tmp;
10732                                 MonoExceptionClause *clause;
10733
10734                                 for (tmp = handlers; tmp; tmp = tmp->next) {
10735                                         clause = tmp->data;
10736                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
10737                                         g_assert (tblock);
10738                                         link_bblock (cfg, bblock, tblock);
10739                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
10740                                         ins->inst_target_bb = tblock;
10741                                         ins->inst_eh_block = clause;
10742                                         MONO_ADD_INS (bblock, ins);
10743                                         bblock->has_call_handler = 1;
10744                                         if (COMPILE_LLVM (cfg)) {
10745                                                 MonoBasicBlock *target_bb;
10746
10747                                                 /*
10748                                                  * Link the finally bblock with the target, since it will
10749                                                  * conceptually branch there.
10750                                                  * FIXME: Have to link the bblock containing the endfinally.
10751                                                  */
10752                                                 GET_BBLOCK (cfg, target_bb, target);
10753                                                 link_bblock (cfg, tblock, target_bb);
10754                                         }
10755                                 }
10756                                 g_list_free (handlers);
10757                         }
10758
10759                         MONO_INST_NEW (cfg, ins, OP_BR);
10760                         MONO_ADD_INS (bblock, ins);
10761                         GET_BBLOCK (cfg, tblock, target);
10762                         link_bblock (cfg, bblock, tblock);
10763                         ins->inst_target_bb = tblock;
10764                         start_new_bblock = 1;
10765
10766                         if (*ip == CEE_LEAVE)
10767                                 ip += 5;
10768                         else
10769                                 ip += 2;
10770
10771                         break;
10772                 }
10773
10774                         /*
10775                          * Mono specific opcodes
10776                          */
10777                 case MONO_CUSTOM_PREFIX: {
10778
10779                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
10780
10781                         CHECK_OPSIZE (2);
10782                         switch (ip [1]) {
10783                         case CEE_MONO_ICALL: {
10784                                 gpointer func;
10785                                 MonoJitICallInfo *info;
10786
10787                                 token = read32 (ip + 2);
10788                                 func = mono_method_get_wrapper_data (method, token);
10789                                 info = mono_find_jit_icall_by_addr (func);
10790                                 if (!info)
10791                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
10792                                 g_assert (info);
10793
10794                                 CHECK_STACK (info->sig->param_count);
10795                                 sp -= info->sig->param_count;
10796
10797                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
10798                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
10799                                         *sp++ = ins;
10800
10801                                 ip += 6;
10802                                 inline_costs += 10 * num_calls++;
10803
10804                                 break;
10805                         }
10806                         case CEE_MONO_LDPTR: {
10807                                 gpointer ptr;
10808
10809                                 CHECK_STACK_OVF (1);
10810                                 CHECK_OPSIZE (6);
10811                                 token = read32 (ip + 2);
10812
10813                                 ptr = mono_method_get_wrapper_data (method, token);
10814                                 /* FIXME: Generalize this */
10815                                 if (cfg->compile_aot && ptr == mono_thread_interruption_request_flag ()) {
10816                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
10817                                         *sp++ = ins;
10818                                         ip += 6;
10819                                         break;
10820                                 }
10821                                 EMIT_NEW_PCONST (cfg, ins, ptr);
10822                                 *sp++ = ins;
10823                                 ip += 6;
10824                                 inline_costs += 10 * num_calls++;
10825                                 /* Can't embed random pointers into AOT code */
10826                                 cfg->disable_aot = 1;
10827                                 break;
10828                         }
10829                         case CEE_MONO_JIT_ICALL_ADDR: {
10830                                 MonoJitICallInfo *callinfo;
10831                                 gpointer ptr;
10832
10833                                 CHECK_STACK_OVF (1);
10834                                 CHECK_OPSIZE (6);
10835                                 token = read32 (ip + 2);
10836
10837                                 ptr = mono_method_get_wrapper_data (method, token);
10838                                 callinfo = mono_find_jit_icall_by_addr (ptr);
10839                                 g_assert (callinfo);
10840                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
10841                                 *sp++ = ins;
10842                                 ip += 6;
10843                                 inline_costs += 10 * num_calls++;
10844                                 break;
10845                         }
10846                         case CEE_MONO_ICALL_ADDR: {
10847                                 MonoMethod *cmethod;
10848                                 gpointer ptr;
10849
10850                                 CHECK_STACK_OVF (1);
10851                                 CHECK_OPSIZE (6);
10852                                 token = read32 (ip + 2);
10853
10854                                 cmethod = mono_method_get_wrapper_data (method, token);
10855
10856                                 if (cfg->compile_aot) {
10857                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
10858                                 } else {
10859                                         ptr = mono_lookup_internal_call (cmethod);
10860                                         g_assert (ptr);
10861                                         EMIT_NEW_PCONST (cfg, ins, ptr);
10862                                 }
10863                                 *sp++ = ins;
10864                                 ip += 6;
10865                                 break;
10866                         }
10867                         case CEE_MONO_VTADDR: {
10868                                 MonoInst *src_var, *src;
10869
10870                                 CHECK_STACK (1);
10871                                 --sp;
10872
10873                                 // FIXME:
10874                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
10875                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
10876                                 *sp++ = src;
10877                                 ip += 2;
10878                                 break;
10879                         }
10880                         case CEE_MONO_NEWOBJ: {
10881                                 MonoInst *iargs [2];
10882
10883                                 CHECK_STACK_OVF (1);
10884                                 CHECK_OPSIZE (6);
10885                                 token = read32 (ip + 2);
10886                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10887                                 mono_class_init (klass);
10888                                 NEW_DOMAINCONST (cfg, iargs [0]);
10889                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
10890                                 NEW_CLASSCONST (cfg, iargs [1], klass);
10891                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
10892                                 *sp++ = mono_emit_jit_icall (cfg, mono_object_new, iargs);
10893                                 ip += 6;
10894                                 inline_costs += 10 * num_calls++;
10895                                 break;
10896                         }
10897                         case CEE_MONO_OBJADDR:
10898                                 CHECK_STACK (1);
10899                                 --sp;
10900                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
10901                                 ins->dreg = alloc_ireg_mp (cfg);
10902                                 ins->sreg1 = sp [0]->dreg;
10903                                 ins->type = STACK_MP;
10904                                 MONO_ADD_INS (cfg->cbb, ins);
10905                                 *sp++ = ins;
10906                                 ip += 2;
10907                                 break;
10908                         case CEE_MONO_LDNATIVEOBJ:
10909                                 /*
10910                                  * Similar to LDOBJ, but instead load the unmanaged
10911                                  * representation of the vtype to the stack.
10912                                  */
10913                                 CHECK_STACK (1);
10914                                 CHECK_OPSIZE (6);
10915                                 --sp;
10916                                 token = read32 (ip + 2);
10917                                 klass = mono_method_get_wrapper_data (method, token);
10918                                 g_assert (klass->valuetype);
10919                                 mono_class_init (klass);
10920
10921                                 {
10922                                         MonoInst *src, *dest, *temp;
10923
10924                                         src = sp [0];
10925                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
10926                                         temp->backend.is_pinvoke = 1;
10927                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
10928                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
10929
10930                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
10931                                         dest->type = STACK_VTYPE;
10932                                         dest->klass = klass;
10933
10934                                         *sp ++ = dest;
10935                                         ip += 6;
10936                                 }
10937                                 break;
10938                         case CEE_MONO_RETOBJ: {
10939                                 /*
10940                                  * Same as RET, but return the native representation of a vtype
10941                                  * to the caller.
10942                                  */
10943                                 g_assert (cfg->ret);
10944                                 g_assert (mono_method_signature (method)->pinvoke);
10945                                 CHECK_STACK (1);
10946                                 --sp;
10947
10948                                 CHECK_OPSIZE (6);
10949                                 token = read32 (ip + 2);
10950                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10951
10952                                 if (!cfg->vret_addr) {
10953                                         g_assert (cfg->ret_var_is_local);
10954
10955                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
10956                                 } else {
10957                                         EMIT_NEW_RETLOADA (cfg, ins);
10958                                 }
10959                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
10960
10961                                 if (sp != stack_start)
10962                                         UNVERIFIED;
10963
10964                                 MONO_INST_NEW (cfg, ins, OP_BR);
10965                                 ins->inst_target_bb = end_bblock;
10966                                 MONO_ADD_INS (bblock, ins);
10967                                 link_bblock (cfg, bblock, end_bblock);
10968                                 start_new_bblock = 1;
10969                                 ip += 6;
10970                                 break;
10971                         }
10972                         case CEE_MONO_CISINST:
10973                         case CEE_MONO_CCASTCLASS: {
10974                                 int token;
10975                                 CHECK_STACK (1);
10976                                 --sp;
10977                                 CHECK_OPSIZE (6);
10978                                 token = read32 (ip + 2);
10979                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
10980                                 if (ip [1] == CEE_MONO_CISINST)
10981                                         ins = handle_cisinst (cfg, klass, sp [0]);
10982                                 else
10983                                         ins = handle_ccastclass (cfg, klass, sp [0]);
10984                                 bblock = cfg->cbb;
10985                                 *sp++ = ins;
10986                                 ip += 6;
10987                                 break;
10988                         }
10989                         case CEE_MONO_SAVE_LMF:
10990                         case CEE_MONO_RESTORE_LMF:
10991 #ifdef MONO_ARCH_HAVE_LMF_OPS
10992                                 MONO_INST_NEW (cfg, ins, (ip [1] == CEE_MONO_SAVE_LMF) ? OP_SAVE_LMF : OP_RESTORE_LMF);
10993                                 MONO_ADD_INS (bblock, ins);
10994                                 cfg->need_lmf_area = TRUE;
10995 #endif
10996                                 ip += 2;
10997                                 break;
10998                         case CEE_MONO_CLASSCONST:
10999                                 CHECK_STACK_OVF (1);
11000                                 CHECK_OPSIZE (6);
11001                                 token = read32 (ip + 2);
11002                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11003                                 *sp++ = ins;
11004                                 ip += 6;
11005                                 inline_costs += 10 * num_calls++;
11006                                 break;
11007                         case CEE_MONO_NOT_TAKEN:
11008                                 bblock->out_of_line = TRUE;
11009                                 ip += 2;
11010                                 break;
11011                         case CEE_MONO_TLS:
11012                                 CHECK_STACK_OVF (1);
11013                                 CHECK_OPSIZE (6);
11014                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
11015                                 ins->dreg = alloc_preg (cfg);
11016                                 ins->inst_offset = (gint32)read32 (ip + 2);
11017                                 ins->type = STACK_PTR;
11018                                 MONO_ADD_INS (bblock, ins);
11019                                 *sp++ = ins;
11020                                 ip += 6;
11021                                 break;
11022                         case CEE_MONO_DYN_CALL: {
11023                                 MonoCallInst *call;
11024
11025                                 /* It would be easier to call a trampoline, but that would put an
11026                                  * extra frame on the stack, confusing exception handling. So
11027                                  * implement it inline using an opcode for now.
11028                                  */
11029
11030                                 if (!cfg->dyn_call_var) {
11031                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11032                                         /* prevent it from being register allocated */
11033                                         cfg->dyn_call_var->flags |= MONO_INST_INDIRECT;
11034                                 }
11035
11036                                 /* Has to use a call inst since it local regalloc expects it */
11037                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11038                                 ins = (MonoInst*)call;
11039                                 sp -= 2;
11040                                 ins->sreg1 = sp [0]->dreg;
11041                                 ins->sreg2 = sp [1]->dreg;
11042                                 MONO_ADD_INS (bblock, ins);
11043
11044 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
11045                                 cfg->param_area = MAX (cfg->param_area, MONO_ARCH_DYN_CALL_PARAM_AREA);
11046 #endif
11047
11048                                 ip += 2;
11049                                 inline_costs += 10 * num_calls++;
11050
11051                                 break;
11052                         }
11053                         case CEE_MONO_MEMORY_BARRIER: {
11054                                 CHECK_OPSIZE (5);
11055                                 emit_memory_barrier (cfg, (int)read32 (ip + 1));
11056                                 ip += 5;
11057                                 break;
11058                         }
11059                         case CEE_MONO_JIT_ATTACH: {
11060                                 MonoInst *args [16];
11061                                 MonoInst *ad_ins, *lmf_ins;
11062                                 MonoBasicBlock *next_bb = NULL;
11063
11064                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11065
11066                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11067                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11068
11069 #if TARGET_WIN32
11070                                 ad_ins = NULL;
11071                                 lmf_ins = NULL;
11072 #else
11073                                 ad_ins = mono_get_domain_intrinsic (cfg);
11074                                 lmf_ins = mono_get_lmf_intrinsic (cfg);
11075 #endif
11076
11077                                 if (MONO_ARCH_HAVE_TLS_GET && ad_ins && lmf_ins) {
11078                                         NEW_BBLOCK (cfg, next_bb);
11079
11080                                         MONO_ADD_INS (cfg->cbb, ad_ins);
11081                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ad_ins->dreg, 0);
11082                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, next_bb);
11083
11084                                         MONO_ADD_INS (cfg->cbb, lmf_ins);
11085                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, lmf_ins->dreg, 0);
11086                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, next_bb);
11087                                 }
11088
11089                                 if (cfg->compile_aot) {
11090                                         /* AOT code is only used in the root domain */
11091                                         EMIT_NEW_PCONST (cfg, args [0], NULL);
11092                                 } else {
11093                                         EMIT_NEW_PCONST (cfg, args [0], cfg->domain);
11094                                 }
11095                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11096                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11097
11098                                 if (next_bb) {
11099                                         MONO_START_BB (cfg, next_bb);
11100                                         bblock = cfg->cbb;
11101                                 }
11102                                 ip += 2;
11103                                 break;
11104                         }
11105                         case CEE_MONO_JIT_DETACH: {
11106                                 MonoInst *args [16];
11107
11108                                 /* Restore the original domain */
11109                                 dreg = alloc_ireg (cfg);
11110                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11111                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11112                                 ip += 2;
11113                                 break;
11114                         }
11115                         default:
11116                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
11117                                 break;
11118                         }
11119                         break;
11120                 }
11121
11122                 case CEE_PREFIX1: {
11123                         CHECK_OPSIZE (2);
11124                         switch (ip [1]) {
11125                         case CEE_ARGLIST: {
11126                                 /* somewhat similar to LDTOKEN */
11127                                 MonoInst *addr, *vtvar;
11128                                 CHECK_STACK_OVF (1);
11129                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
11130
11131                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11132                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
11133
11134                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11135                                 ins->type = STACK_VTYPE;
11136                                 ins->klass = mono_defaults.argumenthandle_class;
11137                                 *sp++ = ins;
11138                                 ip += 2;
11139                                 break;
11140                         }
11141                         case CEE_CEQ:
11142                         case CEE_CGT:
11143                         case CEE_CGT_UN:
11144                         case CEE_CLT:
11145                         case CEE_CLT_UN: {
11146                                 MonoInst *cmp;
11147                                 CHECK_STACK (2);
11148                                 /*
11149                                  * The following transforms:
11150                                  *    CEE_CEQ    into OP_CEQ
11151                                  *    CEE_CGT    into OP_CGT
11152                                  *    CEE_CGT_UN into OP_CGT_UN
11153                                  *    CEE_CLT    into OP_CLT
11154                                  *    CEE_CLT_UN into OP_CLT_UN
11155                                  */
11156                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
11157
11158                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
11159                                 sp -= 2;
11160                                 cmp->sreg1 = sp [0]->dreg;
11161                                 cmp->sreg2 = sp [1]->dreg;
11162                                 type_from_op (cmp, sp [0], sp [1]);
11163                                 CHECK_TYPE (cmp);
11164                                 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))))
11165                                         cmp->opcode = OP_LCOMPARE;
11166                                 else if (sp [0]->type == STACK_R8)
11167                                         cmp->opcode = OP_FCOMPARE;
11168                                 else
11169                                         cmp->opcode = OP_ICOMPARE;
11170                                 MONO_ADD_INS (bblock, cmp);
11171                                 ins->type = STACK_I4;
11172                                 ins->dreg = alloc_dreg (cfg, ins->type);
11173                                 type_from_op (ins, sp [0], sp [1]);
11174
11175                                 if (cmp->opcode == OP_FCOMPARE) {
11176                                         /*
11177                                          * The backends expect the fceq opcodes to do the
11178                                          * comparison too.
11179                                          */
11180                                         cmp->opcode = OP_NOP;
11181                                         ins->sreg1 = cmp->sreg1;
11182                                         ins->sreg2 = cmp->sreg2;
11183                                 }
11184                                 MONO_ADD_INS (bblock, ins);
11185                                 *sp++ = ins;
11186                                 ip += 2;
11187                                 break;
11188                         }
11189                         case CEE_LDFTN: {
11190                                 MonoInst *argconst;
11191                                 MonoMethod *cil_method;
11192
11193                                 CHECK_STACK_OVF (1);
11194                                 CHECK_OPSIZE (6);
11195                                 n = read32 (ip + 2);
11196                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
11197                                 if (!cmethod || mono_loader_get_last_error ())
11198                                         LOAD_ERROR;
11199                                 mono_class_init (cmethod->klass);
11200
11201                                 mono_save_token_info (cfg, image, n, cmethod);
11202
11203                                 context_used = mini_method_check_context_used (cfg, cmethod);
11204
11205                                 cil_method = cmethod;
11206                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
11207                                         METHOD_ACCESS_FAILURE;
11208
11209                                 if (mono_security_cas_enabled ()) {
11210                                         if (check_linkdemand (cfg, method, cmethod))
11211                                                 INLINE_FAILURE ("linkdemand");
11212                                         CHECK_CFG_EXCEPTION;
11213                                 } else if (mono_security_core_clr_enabled ()) {
11214                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
11215                                 }
11216
11217                                 /*
11218                                  * Optimize the common case of ldftn+delegate creation
11219                                  */
11220                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
11221                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
11222                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
11223                                                 MonoInst *target_ins;
11224                                                 MonoMethod *invoke;
11225                                                 int invoke_context_used;
11226
11227                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
11228                                                 if (!invoke || !mono_method_signature (invoke))
11229                                                         LOAD_ERROR;
11230
11231                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
11232
11233                                                 target_ins = sp [-1];
11234
11235                                                 if (mono_security_core_clr_enabled ())
11236                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method, bblock, ip);
11237
11238                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
11239                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
11240                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
11241                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
11242                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
11243                                                         }
11244                                                 }
11245
11246 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE)
11247                                                 /* FIXME: SGEN support */
11248                                                 if (invoke_context_used == 0) {
11249                                                         ip += 6;
11250                                                         if (cfg->verbose_level > 3)
11251                                                                 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11252                                                         sp --;
11253                                                         *sp = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used);
11254                                                         CHECK_CFG_EXCEPTION;
11255                                                         ip += 5;
11256                                                         sp ++;
11257                                                         break;
11258                                                 }
11259 #endif
11260                                         }
11261                                 }
11262
11263                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
11264                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
11265                                 *sp++ = ins;
11266
11267                                 ip += 6;
11268                                 inline_costs += 10 * num_calls++;
11269                                 break;
11270                         }
11271                         case CEE_LDVIRTFTN: {
11272                                 MonoInst *args [2];
11273
11274                                 CHECK_STACK (1);
11275                                 CHECK_OPSIZE (6);
11276                                 n = read32 (ip + 2);
11277                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
11278                                 if (!cmethod || mono_loader_get_last_error ())
11279                                         LOAD_ERROR;
11280                                 mono_class_init (cmethod->klass);
11281
11282                                 context_used = mini_method_check_context_used (cfg, cmethod);
11283
11284                                 if (mono_security_cas_enabled ()) {
11285                                         if (check_linkdemand (cfg, method, cmethod))
11286                                                 INLINE_FAILURE ("linkdemand");
11287                                         CHECK_CFG_EXCEPTION;
11288                                 } else if (mono_security_core_clr_enabled ()) {
11289                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod, bblock, ip);
11290                                 }
11291
11292                                 --sp;
11293                                 args [0] = *sp;
11294
11295                                 args [1] = emit_get_rgctx_method (cfg, context_used,
11296                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
11297
11298                                 if (context_used)
11299                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
11300                                 else
11301                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
11302
11303                                 ip += 6;
11304                                 inline_costs += 10 * num_calls++;
11305                                 break;
11306                         }
11307                         case CEE_LDARG:
11308                                 CHECK_STACK_OVF (1);
11309                                 CHECK_OPSIZE (4);
11310                                 n = read16 (ip + 2);
11311                                 CHECK_ARG (n);
11312                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
11313                                 *sp++ = ins;
11314                                 ip += 4;
11315                                 break;
11316                         case CEE_LDARGA:
11317                                 CHECK_STACK_OVF (1);
11318                                 CHECK_OPSIZE (4);
11319                                 n = read16 (ip + 2);
11320                                 CHECK_ARG (n);
11321                                 NEW_ARGLOADA (cfg, ins, n);
11322                                 MONO_ADD_INS (cfg->cbb, ins);
11323                                 *sp++ = ins;
11324                                 ip += 4;
11325                                 break;
11326                         case CEE_STARG:
11327                                 CHECK_STACK (1);
11328                                 --sp;
11329                                 CHECK_OPSIZE (4);
11330                                 n = read16 (ip + 2);
11331                                 CHECK_ARG (n);
11332                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
11333                                         UNVERIFIED;
11334                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
11335                                 ip += 4;
11336                                 break;
11337                         case CEE_LDLOC:
11338                                 CHECK_STACK_OVF (1);
11339                                 CHECK_OPSIZE (4);
11340                                 n = read16 (ip + 2);
11341                                 CHECK_LOCAL (n);
11342                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
11343                                 *sp++ = ins;
11344                                 ip += 4;
11345                                 break;
11346                         case CEE_LDLOCA: {
11347                                 unsigned char *tmp_ip;
11348                                 CHECK_STACK_OVF (1);
11349                                 CHECK_OPSIZE (4);
11350                                 n = read16 (ip + 2);
11351                                 CHECK_LOCAL (n);
11352
11353                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
11354                                         ip = tmp_ip;
11355                                         inline_costs += 1;
11356                                         break;
11357                                 }
11358
11359                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
11360                                 *sp++ = ins;
11361                                 ip += 4;
11362                                 break;
11363                         }
11364                         case CEE_STLOC:
11365                                 CHECK_STACK (1);
11366                                 --sp;
11367                                 CHECK_OPSIZE (4);
11368                                 n = read16 (ip + 2);
11369                                 CHECK_LOCAL (n);
11370                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
11371                                         UNVERIFIED;
11372                                 emit_stloc_ir (cfg, sp, header, n);
11373                                 ip += 4;
11374                                 inline_costs += 1;
11375                                 break;
11376                         case CEE_LOCALLOC:
11377                                 CHECK_STACK (1);
11378                                 --sp;
11379                                 if (sp != stack_start)
11380                                         UNVERIFIED;
11381                                 if (cfg->method != method)
11382                                         /*
11383                                          * Inlining this into a loop in a parent could lead to
11384                                          * stack overflows which is different behavior than the
11385                                          * non-inlined case, thus disable inlining in this case.
11386                                          */
11387                                         goto inline_failure;
11388
11389                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
11390                                 ins->dreg = alloc_preg (cfg);
11391                                 ins->sreg1 = sp [0]->dreg;
11392                                 ins->type = STACK_PTR;
11393                                 MONO_ADD_INS (cfg->cbb, ins);
11394
11395                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11396                                 if (init_locals)
11397                                         ins->flags |= MONO_INST_INIT;
11398
11399                                 *sp++ = ins;
11400                                 ip += 2;
11401                                 break;
11402                         case CEE_ENDFILTER: {
11403                                 MonoExceptionClause *clause, *nearest;
11404                                 int cc, nearest_num;
11405
11406                                 CHECK_STACK (1);
11407                                 --sp;
11408                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
11409                                         UNVERIFIED;
11410                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
11411                                 ins->sreg1 = (*sp)->dreg;
11412                                 MONO_ADD_INS (bblock, ins);
11413                                 start_new_bblock = 1;
11414                                 ip += 2;
11415
11416                                 nearest = NULL;
11417                                 nearest_num = 0;
11418                                 for (cc = 0; cc < header->num_clauses; ++cc) {
11419                                         clause = &header->clauses [cc];
11420                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
11421                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
11422                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset))) {
11423                                                 nearest = clause;
11424                                                 nearest_num = cc;
11425                                         }
11426                                 }
11427                                 g_assert (nearest);
11428                                 if ((ip - header->code) != nearest->handler_offset)
11429                                         UNVERIFIED;
11430
11431                                 break;
11432                         }
11433                         case CEE_UNALIGNED_:
11434                                 ins_flag |= MONO_INST_UNALIGNED;
11435                                 /* FIXME: record alignment? we can assume 1 for now */
11436                                 CHECK_OPSIZE (3);
11437                                 ip += 3;
11438                                 break;
11439                         case CEE_VOLATILE_:
11440                                 ins_flag |= MONO_INST_VOLATILE;
11441                                 ip += 2;
11442                                 break;
11443                         case CEE_TAIL_:
11444                                 ins_flag   |= MONO_INST_TAILCALL;
11445                                 cfg->flags |= MONO_CFG_HAS_TAIL;
11446                                 /* Can't inline tail calls at this time */
11447                                 inline_costs += 100000;
11448                                 ip += 2;
11449                                 break;
11450                         case CEE_INITOBJ:
11451                                 CHECK_STACK (1);
11452                                 --sp;
11453                                 CHECK_OPSIZE (6);
11454                                 token = read32 (ip + 2);
11455                                 klass = mini_get_class (method, token, generic_context);
11456                                 CHECK_TYPELOAD (klass);
11457                                 if (generic_class_is_reference_type (cfg, klass))
11458                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
11459                                 else
11460                                         mini_emit_initobj (cfg, *sp, NULL, klass);
11461                                 ip += 6;
11462                                 inline_costs += 1;
11463                                 break;
11464                         case CEE_CONSTRAINED_:
11465                                 CHECK_OPSIZE (6);
11466                                 token = read32 (ip + 2);
11467                                 constrained_call = mini_get_class (method, token, generic_context);
11468                                 CHECK_TYPELOAD (constrained_call);
11469                                 ip += 6;
11470                                 break;
11471                         case CEE_CPBLK:
11472                         case CEE_INITBLK: {
11473                                 MonoInst *iargs [3];
11474                                 CHECK_STACK (3);
11475                                 sp -= 3;
11476
11477                                 if ((ip [1] == CEE_CPBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
11478                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
11479                                 } 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)) {
11480                                         /* emit_memset only works when val == 0 */
11481                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
11482                                 } else {
11483                                         iargs [0] = sp [0];
11484                                         iargs [1] = sp [1];
11485                                         iargs [2] = sp [2];
11486                                         if (ip [1] == CEE_CPBLK) {
11487                                                 MonoMethod *memcpy_method = get_memcpy_method ();
11488                                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11489                                         } else {
11490                                                 MonoMethod *memset_method = get_memset_method ();
11491                                                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
11492                                         }
11493                                 }
11494                                 ip += 2;
11495                                 inline_costs += 1;
11496                                 break;
11497                         }
11498                         case CEE_NO_:
11499                                 CHECK_OPSIZE (3);
11500                                 if (ip [2] & 0x1)
11501                                         ins_flag |= MONO_INST_NOTYPECHECK;
11502                                 if (ip [2] & 0x2)
11503                                         ins_flag |= MONO_INST_NORANGECHECK;
11504                                 /* we ignore the no-nullcheck for now since we
11505                                  * really do it explicitly only when doing callvirt->call
11506                                  */
11507                                 ip += 3;
11508                                 break;
11509                         case CEE_RETHROW: {
11510                                 MonoInst *load;
11511                                 int handler_offset = -1;
11512
11513                                 for (i = 0; i < header->num_clauses; ++i) {
11514                                         MonoExceptionClause *clause = &header->clauses [i];
11515                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
11516                                                 handler_offset = clause->handler_offset;
11517                                                 break;
11518                                         }
11519                                 }
11520
11521                                 bblock->flags |= BB_EXCEPTION_UNSAFE;
11522
11523                                 g_assert (handler_offset != -1);
11524
11525                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
11526                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
11527                                 ins->sreg1 = load->dreg;
11528                                 MONO_ADD_INS (bblock, ins);
11529
11530                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11531                                 MONO_ADD_INS (bblock, ins);
11532
11533                                 sp = stack_start;
11534                                 link_bblock (cfg, bblock, end_bblock);
11535                                 start_new_bblock = 1;
11536                                 ip += 2;
11537                                 break;
11538                         }
11539                         case CEE_SIZEOF: {
11540                                 guint32 val;
11541                                 int ialign;
11542
11543                                 GSHAREDVT_FAILURE (*ip);
11544
11545                                 CHECK_STACK_OVF (1);
11546                                 CHECK_OPSIZE (6);
11547                                 token = read32 (ip + 2);
11548                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !method->klass->image->dynamic && !generic_context) {
11549                                         MonoType *type = mono_type_create_from_typespec (image, token);
11550                                         val = mono_type_size (type, &ialign);
11551                                 } else {
11552                                         MonoClass *klass = mono_class_get_full (image, token, generic_context);
11553                                         CHECK_TYPELOAD (klass);
11554                                         mono_class_init (klass);
11555                                         val = mono_type_size (&klass->byval_arg, &ialign);
11556                                 }
11557                                 EMIT_NEW_ICONST (cfg, ins, val);
11558                                 *sp++= ins;
11559                                 ip += 6;
11560                                 break;
11561                         }
11562                         case CEE_REFANYTYPE: {
11563                                 MonoInst *src_var, *src;
11564
11565                                 GSHAREDVT_FAILURE (*ip);
11566
11567                                 CHECK_STACK (1);
11568                                 --sp;
11569
11570                                 // FIXME:
11571                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11572                                 if (!src_var)
11573                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11574                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11575                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, type));
11576                                 *sp++ = ins;
11577                                 ip += 2;
11578                                 break;
11579                         }
11580                         case CEE_READONLY_:
11581                                 readonly = TRUE;
11582                                 ip += 2;
11583                                 break;
11584
11585                         case CEE_UNUSED56:
11586                         case CEE_UNUSED57:
11587                         case CEE_UNUSED70:
11588                         case CEE_UNUSED:
11589                         case CEE_UNUSED99:
11590                                 UNVERIFIED;
11591
11592                         default:
11593                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
11594                                 UNVERIFIED;
11595                         }
11596                         break;
11597                 }
11598                 case CEE_UNUSED58:
11599                 case CEE_UNUSED1:
11600                         UNVERIFIED;
11601
11602                 default:
11603                         g_warning ("opcode 0x%02x not handled", *ip);
11604                         UNVERIFIED;
11605                 }
11606         }
11607         if (start_new_bblock != 1)
11608                 UNVERIFIED;
11609
11610         bblock->cil_length = ip - bblock->cil_code;
11611         if (bblock->next_bb) {
11612                 /* This could already be set because of inlining, #693905 */
11613                 MonoBasicBlock *bb = bblock;
11614
11615                 while (bb->next_bb)
11616                         bb = bb->next_bb;
11617                 bb->next_bb = end_bblock;
11618         } else {
11619                 bblock->next_bb = end_bblock;
11620         }
11621
11622         if (cfg->method == method && cfg->domainvar) {
11623                 MonoInst *store;
11624                 MonoInst *get_domain;
11625
11626                 cfg->cbb = init_localsbb;
11627
11628                 if (! (get_domain = mono_arch_get_domain_intrinsic (cfg))) {
11629                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
11630                 }
11631                 else {
11632                         get_domain->dreg = alloc_preg (cfg);
11633                         MONO_ADD_INS (cfg->cbb, get_domain);
11634                 }
11635                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
11636                 MONO_ADD_INS (cfg->cbb, store);
11637         }
11638
11639 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
11640         if (cfg->compile_aot)
11641                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
11642                 mono_get_got_var (cfg);
11643 #endif
11644
11645         if (cfg->method == method && cfg->got_var)
11646                 mono_emit_load_got_addr (cfg);
11647
11648         if (init_locals) {
11649                 MonoInst *store;
11650
11651                 cfg->cbb = init_localsbb;
11652                 cfg->ip = NULL;
11653                 for (i = 0; i < header->num_locals; ++i) {
11654                         MonoType *ptype = header->locals [i];
11655                         int t = ptype->type;
11656                         dreg = cfg->locals [i]->dreg;
11657
11658                         if (t == MONO_TYPE_VALUETYPE && ptype->data.klass->enumtype)
11659                                 t = mono_class_enum_basetype (ptype->data.klass)->type;
11660                         if (ptype->byref) {
11661                                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
11662                         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
11663                                 MONO_EMIT_NEW_ICONST (cfg, cfg->locals [i]->dreg, 0);
11664                         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
11665                                 MONO_EMIT_NEW_I8CONST (cfg, cfg->locals [i]->dreg, 0);
11666                         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
11667                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
11668                                 ins->type = STACK_R8;
11669                                 ins->inst_p0 = (void*)&r8_0;
11670                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
11671                                 MONO_ADD_INS (init_localsbb, ins);
11672                                 EMIT_NEW_LOCSTORE (cfg, store, i, ins);
11673                         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
11674                                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (ptype))) {
11675                                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (ptype));
11676                         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (cfg, ptype)) {
11677                                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (ptype));
11678                         } else {
11679                                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
11680                         }
11681                 }
11682         }
11683
11684         if (cfg->init_ref_vars && cfg->method == method) {
11685                 /* Emit initialization for ref vars */
11686                 // FIXME: Avoid duplication initialization for IL locals.
11687                 for (i = 0; i < cfg->num_varinfo; ++i) {
11688                         MonoInst *ins = cfg->varinfo [i];
11689
11690                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
11691                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
11692                 }
11693         }
11694
11695         if (seq_points) {
11696                 MonoBasicBlock *bb;
11697
11698                 /*
11699                  * Make seq points at backward branch targets interruptable.
11700                  */
11701                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
11702                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
11703                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
11704         }
11705
11706         /* Add a sequence point for method entry/exit events */
11707         if (seq_points) {
11708                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
11709                 MONO_ADD_INS (init_localsbb, ins);
11710                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
11711                 MONO_ADD_INS (cfg->bb_exit, ins);
11712         }
11713
11714         /*
11715          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
11716          * the code they refer to was dead (#11880).
11717          */
11718         if (sym_seq_points) {
11719                 for (i = 0; i < header->code_size; ++i) {
11720                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
11721                                 MonoInst *ins;
11722
11723                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
11724                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
11725                         }
11726                 }
11727         }
11728
11729         cfg->ip = NULL;
11730
11731         if (cfg->method == method) {
11732                 MonoBasicBlock *bb;
11733                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
11734                         bb->region = mono_find_block_region (cfg, bb->real_offset);
11735                         if (cfg->spvars)
11736                                 mono_create_spvar_for_region (cfg, bb->region);
11737                         if (cfg->verbose_level > 2)
11738                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
11739                 }
11740         }
11741
11742         g_slist_free (class_inits);
11743         dont_inline = g_list_remove (dont_inline, method);
11744
11745         if (inline_costs < 0) {
11746                 char *mname;
11747
11748                 /* Method is too large */
11749                 mname = mono_method_full_name (method, TRUE);
11750                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_INVALID_PROGRAM);
11751                 cfg->exception_message = g_strdup_printf ("Method %s is too complex.", mname);
11752                 g_free (mname);
11753                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11754                 mono_basic_block_free (original_bb);
11755                 return -1;
11756         }
11757
11758         if ((cfg->verbose_level > 2) && (cfg->method == method))
11759                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
11760
11761         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11762         mono_basic_block_free (original_bb);
11763         return inline_costs;
11764
11765  exception_exit:
11766         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
11767         goto cleanup;
11768
11769  inline_failure:
11770         goto cleanup;
11771
11772  load_error:
11773         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
11774         goto cleanup;
11775
11776  unverified:
11777         set_exception_type_from_invalid_il (cfg, method, ip);
11778         goto cleanup;
11779
11780  cleanup:
11781         g_slist_free (class_inits);
11782         mono_basic_block_free (original_bb);
11783         dont_inline = g_list_remove (dont_inline, method);
11784         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
11785         return -1;
11786 }
11787
11788 static int
11789 store_membase_reg_to_store_membase_imm (int opcode)
11790 {
11791         switch (opcode) {
11792         case OP_STORE_MEMBASE_REG:
11793                 return OP_STORE_MEMBASE_IMM;
11794         case OP_STOREI1_MEMBASE_REG:
11795                 return OP_STOREI1_MEMBASE_IMM;
11796         case OP_STOREI2_MEMBASE_REG:
11797                 return OP_STOREI2_MEMBASE_IMM;
11798         case OP_STOREI4_MEMBASE_REG:
11799                 return OP_STOREI4_MEMBASE_IMM;
11800         case OP_STOREI8_MEMBASE_REG:
11801                 return OP_STOREI8_MEMBASE_IMM;
11802         default:
11803                 g_assert_not_reached ();
11804         }
11805
11806         return -1;
11807 }
11808
11809 int
11810 mono_op_to_op_imm (int opcode)
11811 {
11812         switch (opcode) {
11813         case OP_IADD:
11814                 return OP_IADD_IMM;
11815         case OP_ISUB:
11816                 return OP_ISUB_IMM;
11817         case OP_IDIV:
11818                 return OP_IDIV_IMM;
11819         case OP_IDIV_UN:
11820                 return OP_IDIV_UN_IMM;
11821         case OP_IREM:
11822                 return OP_IREM_IMM;
11823         case OP_IREM_UN:
11824                 return OP_IREM_UN_IMM;
11825         case OP_IMUL:
11826                 return OP_IMUL_IMM;
11827         case OP_IAND:
11828                 return OP_IAND_IMM;
11829         case OP_IOR:
11830                 return OP_IOR_IMM;
11831         case OP_IXOR:
11832                 return OP_IXOR_IMM;
11833         case OP_ISHL:
11834                 return OP_ISHL_IMM;
11835         case OP_ISHR:
11836                 return OP_ISHR_IMM;
11837         case OP_ISHR_UN:
11838                 return OP_ISHR_UN_IMM;
11839
11840         case OP_LADD:
11841                 return OP_LADD_IMM;
11842         case OP_LSUB:
11843                 return OP_LSUB_IMM;
11844         case OP_LAND:
11845                 return OP_LAND_IMM;
11846         case OP_LOR:
11847                 return OP_LOR_IMM;
11848         case OP_LXOR:
11849                 return OP_LXOR_IMM;
11850         case OP_LSHL:
11851                 return OP_LSHL_IMM;
11852         case OP_LSHR:
11853                 return OP_LSHR_IMM;
11854         case OP_LSHR_UN:
11855                 return OP_LSHR_UN_IMM;
11856
11857         case OP_COMPARE:
11858                 return OP_COMPARE_IMM;
11859         case OP_ICOMPARE:
11860                 return OP_ICOMPARE_IMM;
11861         case OP_LCOMPARE:
11862                 return OP_LCOMPARE_IMM;
11863
11864         case OP_STORE_MEMBASE_REG:
11865                 return OP_STORE_MEMBASE_IMM;
11866         case OP_STOREI1_MEMBASE_REG:
11867                 return OP_STOREI1_MEMBASE_IMM;
11868         case OP_STOREI2_MEMBASE_REG:
11869                 return OP_STOREI2_MEMBASE_IMM;
11870         case OP_STOREI4_MEMBASE_REG:
11871                 return OP_STOREI4_MEMBASE_IMM;
11872
11873 #if defined(TARGET_X86) || defined (TARGET_AMD64)
11874         case OP_X86_PUSH:
11875                 return OP_X86_PUSH_IMM;
11876         case OP_X86_COMPARE_MEMBASE_REG:
11877                 return OP_X86_COMPARE_MEMBASE_IMM;
11878 #endif
11879 #if defined(TARGET_AMD64)
11880         case OP_AMD64_ICOMPARE_MEMBASE_REG:
11881                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
11882 #endif
11883         case OP_VOIDCALL_REG:
11884                 return OP_VOIDCALL;
11885         case OP_CALL_REG:
11886                 return OP_CALL;
11887         case OP_LCALL_REG:
11888                 return OP_LCALL;
11889         case OP_FCALL_REG:
11890                 return OP_FCALL;
11891         case OP_LOCALLOC:
11892                 return OP_LOCALLOC_IMM;
11893         }
11894
11895         return -1;
11896 }
11897
11898 static int
11899 ldind_to_load_membase (int opcode)
11900 {
11901         switch (opcode) {
11902         case CEE_LDIND_I1:
11903                 return OP_LOADI1_MEMBASE;
11904         case CEE_LDIND_U1:
11905                 return OP_LOADU1_MEMBASE;
11906         case CEE_LDIND_I2:
11907                 return OP_LOADI2_MEMBASE;
11908         case CEE_LDIND_U2:
11909                 return OP_LOADU2_MEMBASE;
11910         case CEE_LDIND_I4:
11911                 return OP_LOADI4_MEMBASE;
11912         case CEE_LDIND_U4:
11913                 return OP_LOADU4_MEMBASE;
11914         case CEE_LDIND_I:
11915                 return OP_LOAD_MEMBASE;
11916         case CEE_LDIND_REF:
11917                 return OP_LOAD_MEMBASE;
11918         case CEE_LDIND_I8:
11919                 return OP_LOADI8_MEMBASE;
11920         case CEE_LDIND_R4:
11921                 return OP_LOADR4_MEMBASE;
11922         case CEE_LDIND_R8:
11923                 return OP_LOADR8_MEMBASE;
11924         default:
11925                 g_assert_not_reached ();
11926         }
11927
11928         return -1;
11929 }
11930
11931 static int
11932 stind_to_store_membase (int opcode)
11933 {
11934         switch (opcode) {
11935         case CEE_STIND_I1:
11936                 return OP_STOREI1_MEMBASE_REG;
11937         case CEE_STIND_I2:
11938                 return OP_STOREI2_MEMBASE_REG;
11939         case CEE_STIND_I4:
11940                 return OP_STOREI4_MEMBASE_REG;
11941         case CEE_STIND_I:
11942         case CEE_STIND_REF:
11943                 return OP_STORE_MEMBASE_REG;
11944         case CEE_STIND_I8:
11945                 return OP_STOREI8_MEMBASE_REG;
11946         case CEE_STIND_R4:
11947                 return OP_STORER4_MEMBASE_REG;
11948         case CEE_STIND_R8:
11949                 return OP_STORER8_MEMBASE_REG;
11950         default:
11951                 g_assert_not_reached ();
11952         }
11953
11954         return -1;
11955 }
11956
11957 int
11958 mono_load_membase_to_load_mem (int opcode)
11959 {
11960         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
11961 #if defined(TARGET_X86) || defined(TARGET_AMD64)
11962         switch (opcode) {
11963         case OP_LOAD_MEMBASE:
11964                 return OP_LOAD_MEM;
11965         case OP_LOADU1_MEMBASE:
11966                 return OP_LOADU1_MEM;
11967         case OP_LOADU2_MEMBASE:
11968                 return OP_LOADU2_MEM;
11969         case OP_LOADI4_MEMBASE:
11970                 return OP_LOADI4_MEM;
11971         case OP_LOADU4_MEMBASE:
11972                 return OP_LOADU4_MEM;
11973 #if SIZEOF_REGISTER == 8
11974         case OP_LOADI8_MEMBASE:
11975                 return OP_LOADI8_MEM;
11976 #endif
11977         }
11978 #endif
11979
11980         return -1;
11981 }
11982
11983 static inline int
11984 op_to_op_dest_membase (int store_opcode, int opcode)
11985 {
11986 #if defined(TARGET_X86)
11987         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
11988                 return -1;
11989
11990         switch (opcode) {
11991         case OP_IADD:
11992                 return OP_X86_ADD_MEMBASE_REG;
11993         case OP_ISUB:
11994                 return OP_X86_SUB_MEMBASE_REG;
11995         case OP_IAND:
11996                 return OP_X86_AND_MEMBASE_REG;
11997         case OP_IOR:
11998                 return OP_X86_OR_MEMBASE_REG;
11999         case OP_IXOR:
12000                 return OP_X86_XOR_MEMBASE_REG;
12001         case OP_ADD_IMM:
12002         case OP_IADD_IMM:
12003                 return OP_X86_ADD_MEMBASE_IMM;
12004         case OP_SUB_IMM:
12005         case OP_ISUB_IMM:
12006                 return OP_X86_SUB_MEMBASE_IMM;
12007         case OP_AND_IMM:
12008         case OP_IAND_IMM:
12009                 return OP_X86_AND_MEMBASE_IMM;
12010         case OP_OR_IMM:
12011         case OP_IOR_IMM:
12012                 return OP_X86_OR_MEMBASE_IMM;
12013         case OP_XOR_IMM:
12014         case OP_IXOR_IMM:
12015                 return OP_X86_XOR_MEMBASE_IMM;
12016         case OP_MOVE:
12017                 return OP_NOP;
12018         }
12019 #endif
12020
12021 #if defined(TARGET_AMD64)
12022         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12023                 return -1;
12024
12025         switch (opcode) {
12026         case OP_IADD:
12027                 return OP_X86_ADD_MEMBASE_REG;
12028         case OP_ISUB:
12029                 return OP_X86_SUB_MEMBASE_REG;
12030         case OP_IAND:
12031                 return OP_X86_AND_MEMBASE_REG;
12032         case OP_IOR:
12033                 return OP_X86_OR_MEMBASE_REG;
12034         case OP_IXOR:
12035                 return OP_X86_XOR_MEMBASE_REG;
12036         case OP_IADD_IMM:
12037                 return OP_X86_ADD_MEMBASE_IMM;
12038         case OP_ISUB_IMM:
12039                 return OP_X86_SUB_MEMBASE_IMM;
12040         case OP_IAND_IMM:
12041                 return OP_X86_AND_MEMBASE_IMM;
12042         case OP_IOR_IMM:
12043                 return OP_X86_OR_MEMBASE_IMM;
12044         case OP_IXOR_IMM:
12045                 return OP_X86_XOR_MEMBASE_IMM;
12046         case OP_LADD:
12047                 return OP_AMD64_ADD_MEMBASE_REG;
12048         case OP_LSUB:
12049                 return OP_AMD64_SUB_MEMBASE_REG;
12050         case OP_LAND:
12051                 return OP_AMD64_AND_MEMBASE_REG;
12052         case OP_LOR:
12053                 return OP_AMD64_OR_MEMBASE_REG;
12054         case OP_LXOR:
12055                 return OP_AMD64_XOR_MEMBASE_REG;
12056         case OP_ADD_IMM:
12057         case OP_LADD_IMM:
12058                 return OP_AMD64_ADD_MEMBASE_IMM;
12059         case OP_SUB_IMM:
12060         case OP_LSUB_IMM:
12061                 return OP_AMD64_SUB_MEMBASE_IMM;
12062         case OP_AND_IMM:
12063         case OP_LAND_IMM:
12064                 return OP_AMD64_AND_MEMBASE_IMM;
12065         case OP_OR_IMM:
12066         case OP_LOR_IMM:
12067                 return OP_AMD64_OR_MEMBASE_IMM;
12068         case OP_XOR_IMM:
12069         case OP_LXOR_IMM:
12070                 return OP_AMD64_XOR_MEMBASE_IMM;
12071         case OP_MOVE:
12072                 return OP_NOP;
12073         }
12074 #endif
12075
12076         return -1;
12077 }
12078
12079 static inline int
12080 op_to_op_store_membase (int store_opcode, int opcode)
12081 {
12082 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12083         switch (opcode) {
12084         case OP_ICEQ:
12085                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
12086                         return OP_X86_SETEQ_MEMBASE;
12087         case OP_CNE:
12088                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
12089                         return OP_X86_SETNE_MEMBASE;
12090         }
12091 #endif
12092
12093         return -1;
12094 }
12095
12096 static inline int
12097 op_to_op_src1_membase (int load_opcode, int opcode)
12098 {
12099 #ifdef TARGET_X86
12100         /* FIXME: This has sign extension issues */
12101         /*
12102         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
12103                 return OP_X86_COMPARE_MEMBASE8_IMM;
12104         */
12105
12106         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
12107                 return -1;
12108
12109         switch (opcode) {
12110         case OP_X86_PUSH:
12111                 return OP_X86_PUSH_MEMBASE;
12112         case OP_COMPARE_IMM:
12113         case OP_ICOMPARE_IMM:
12114                 return OP_X86_COMPARE_MEMBASE_IMM;
12115         case OP_COMPARE:
12116         case OP_ICOMPARE:
12117                 return OP_X86_COMPARE_MEMBASE_REG;
12118         }
12119 #endif
12120
12121 #ifdef TARGET_AMD64
12122         /* FIXME: This has sign extension issues */
12123         /*
12124         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
12125                 return OP_X86_COMPARE_MEMBASE8_IMM;
12126         */
12127
12128         switch (opcode) {
12129         case OP_X86_PUSH:
12130 #ifdef __mono_ilp32__
12131                 if (load_opcode == OP_LOADI8_MEMBASE)
12132 #else
12133                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
12134 #endif
12135                         return OP_X86_PUSH_MEMBASE;
12136                 break;
12137                 /* FIXME: This only works for 32 bit immediates
12138         case OP_COMPARE_IMM:
12139         case OP_LCOMPARE_IMM:
12140                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
12141                         return OP_AMD64_COMPARE_MEMBASE_IMM;
12142                 */
12143         case OP_ICOMPARE_IMM:
12144                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
12145                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12146                 break;
12147         case OP_COMPARE:
12148         case OP_LCOMPARE:
12149 #ifdef __mono_ilp32__
12150                 if (load_opcode == OP_LOAD_MEMBASE)
12151                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
12152                 if (load_opcode == OP_LOADI8_MEMBASE)
12153 #else
12154                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
12155 #endif
12156                         return OP_AMD64_COMPARE_MEMBASE_REG;
12157                 break;
12158         case OP_ICOMPARE:
12159                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
12160                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
12161                 break;
12162         }
12163 #endif
12164
12165         return -1;
12166 }
12167
12168 static inline int
12169 op_to_op_src2_membase (int load_opcode, int opcode)
12170 {
12171 #ifdef TARGET_X86
12172         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
12173                 return -1;
12174
12175         switch (opcode) {
12176         case OP_COMPARE:
12177         case OP_ICOMPARE:
12178                 return OP_X86_COMPARE_REG_MEMBASE;
12179         case OP_IADD:
12180                 return OP_X86_ADD_REG_MEMBASE;
12181         case OP_ISUB:
12182                 return OP_X86_SUB_REG_MEMBASE;
12183         case OP_IAND:
12184                 return OP_X86_AND_REG_MEMBASE;
12185         case OP_IOR:
12186                 return OP_X86_OR_REG_MEMBASE;
12187         case OP_IXOR:
12188                 return OP_X86_XOR_REG_MEMBASE;
12189         }
12190 #endif
12191
12192 #ifdef TARGET_AMD64
12193 #ifdef __mono_ilp32__
12194         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
12195 #else
12196         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)) {
12197 #endif
12198                 switch (opcode) {
12199                 case OP_ICOMPARE:
12200                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
12201                 case OP_IADD:
12202                         return OP_X86_ADD_REG_MEMBASE;
12203                 case OP_ISUB:
12204                         return OP_X86_SUB_REG_MEMBASE;
12205                 case OP_IAND:
12206                         return OP_X86_AND_REG_MEMBASE;
12207                 case OP_IOR:
12208                         return OP_X86_OR_REG_MEMBASE;
12209                 case OP_IXOR:
12210                         return OP_X86_XOR_REG_MEMBASE;
12211                 }
12212 #ifdef __mono_ilp32__
12213         } else if (load_opcode == OP_LOADI8_MEMBASE) {
12214 #else
12215         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE)) {
12216 #endif
12217                 switch (opcode) {
12218                 case OP_COMPARE:
12219                 case OP_LCOMPARE:
12220                         return OP_AMD64_COMPARE_REG_MEMBASE;
12221                 case OP_LADD:
12222                         return OP_AMD64_ADD_REG_MEMBASE;
12223                 case OP_LSUB:
12224                         return OP_AMD64_SUB_REG_MEMBASE;
12225                 case OP_LAND:
12226                         return OP_AMD64_AND_REG_MEMBASE;
12227                 case OP_LOR:
12228                         return OP_AMD64_OR_REG_MEMBASE;
12229                 case OP_LXOR:
12230                         return OP_AMD64_XOR_REG_MEMBASE;
12231                 }
12232         }
12233 #endif
12234
12235         return -1;
12236 }
12237
12238 int
12239 mono_op_to_op_imm_noemul (int opcode)
12240 {
12241         switch (opcode) {
12242 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
12243         case OP_LSHR:
12244         case OP_LSHL:
12245         case OP_LSHR_UN:
12246                 return -1;
12247 #endif
12248 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
12249         case OP_IDIV:
12250         case OP_IDIV_UN:
12251         case OP_IREM:
12252         case OP_IREM_UN:
12253                 return -1;
12254 #endif
12255 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
12256         case OP_IMUL:
12257                 return -1;
12258 #endif
12259         default:
12260                 return mono_op_to_op_imm (opcode);
12261         }
12262 }
12263
12264 /**
12265  * mono_handle_global_vregs:
12266  *
12267  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
12268  * for them.
12269  */
12270 void
12271 mono_handle_global_vregs (MonoCompile *cfg)
12272 {
12273         gint32 *vreg_to_bb;
12274         MonoBasicBlock *bb;
12275         int i, pos;
12276
12277         vreg_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
12278
12279 #ifdef MONO_ARCH_SIMD_INTRINSICS
12280         if (cfg->uses_simd_intrinsics)
12281                 mono_simd_simplify_indirection (cfg);
12282 #endif
12283
12284         /* Find local vregs used in more than one bb */
12285         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12286                 MonoInst *ins = bb->code;
12287                 int block_num = bb->block_num;
12288
12289                 if (cfg->verbose_level > 2)
12290                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
12291
12292                 cfg->cbb = bb;
12293                 for (; ins; ins = ins->next) {
12294                         const char *spec = INS_INFO (ins->opcode);
12295                         int regtype = 0, regindex;
12296                         gint32 prev_bb;
12297
12298                         if (G_UNLIKELY (cfg->verbose_level > 2))
12299                                 mono_print_ins (ins);
12300
12301                         g_assert (ins->opcode >= MONO_CEE_LAST);
12302
12303                         for (regindex = 0; regindex < 4; regindex ++) {
12304                                 int vreg = 0;
12305
12306                                 if (regindex == 0) {
12307                                         regtype = spec [MONO_INST_DEST];
12308                                         if (regtype == ' ')
12309                                                 continue;
12310                                         vreg = ins->dreg;
12311                                 } else if (regindex == 1) {
12312                                         regtype = spec [MONO_INST_SRC1];
12313                                         if (regtype == ' ')
12314                                                 continue;
12315                                         vreg = ins->sreg1;
12316                                 } else if (regindex == 2) {
12317                                         regtype = spec [MONO_INST_SRC2];
12318                                         if (regtype == ' ')
12319                                                 continue;
12320                                         vreg = ins->sreg2;
12321                                 } else if (regindex == 3) {
12322                                         regtype = spec [MONO_INST_SRC3];
12323                                         if (regtype == ' ')
12324                                                 continue;
12325                                         vreg = ins->sreg3;
12326                                 }
12327
12328 #if SIZEOF_REGISTER == 4
12329                                 /* In the LLVM case, the long opcodes are not decomposed */
12330                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
12331                                         /*
12332                                          * Since some instructions reference the original long vreg,
12333                                          * and some reference the two component vregs, it is quite hard
12334                                          * to determine when it needs to be global. So be conservative.
12335                                          */
12336                                         if (!get_vreg_to_inst (cfg, vreg)) {
12337                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
12338
12339                                                 if (cfg->verbose_level > 2)
12340                                                         printf ("LONG VREG R%d made global.\n", vreg);
12341                                         }
12342
12343                                         /*
12344                                          * Make the component vregs volatile since the optimizations can
12345                                          * get confused otherwise.
12346                                          */
12347                                         get_vreg_to_inst (cfg, vreg + 1)->flags |= MONO_INST_VOLATILE;
12348                                         get_vreg_to_inst (cfg, vreg + 2)->flags |= MONO_INST_VOLATILE;
12349                                 }
12350 #endif
12351
12352                                 g_assert (vreg != -1);
12353
12354                                 prev_bb = vreg_to_bb [vreg];
12355                                 if (prev_bb == 0) {
12356                                         /* 0 is a valid block num */
12357                                         vreg_to_bb [vreg] = block_num + 1;
12358                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
12359                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
12360                                                 continue;
12361
12362                                         if (!get_vreg_to_inst (cfg, vreg)) {
12363                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12364                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
12365
12366                                                 switch (regtype) {
12367                                                 case 'i':
12368                                                         if (vreg_is_ref (cfg, vreg))
12369                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
12370                                                         else
12371                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
12372                                                         break;
12373                                                 case 'l':
12374                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
12375                                                         break;
12376                                                 case 'f':
12377                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
12378                                                         break;
12379                                                 case 'v':
12380                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
12381                                                         break;
12382                                                 default:
12383                                                         g_assert_not_reached ();
12384                                                 }
12385                                         }
12386
12387                                         /* Flag as having been used in more than one bb */
12388                                         vreg_to_bb [vreg] = -1;
12389                                 }
12390                         }
12391                 }
12392         }
12393
12394         /* If a variable is used in only one bblock, convert it into a local vreg */
12395         for (i = 0; i < cfg->num_varinfo; i++) {
12396                 MonoInst *var = cfg->varinfo [i];
12397                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
12398
12399                 switch (var->type) {
12400                 case STACK_I4:
12401                 case STACK_OBJ:
12402                 case STACK_PTR:
12403                 case STACK_MP:
12404                 case STACK_VTYPE:
12405 #if SIZEOF_REGISTER == 8
12406                 case STACK_I8:
12407 #endif
12408 #if !defined(TARGET_X86) && !defined(MONO_ARCH_SOFT_FLOAT)
12409                 /* Enabling this screws up the fp stack on x86 */
12410                 case STACK_R8:
12411 #endif
12412                         /* Arguments are implicitly global */
12413                         /* Putting R4 vars into registers doesn't work currently */
12414                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
12415                         if ((var->opcode != OP_ARG) && (var != cfg->ret) && !(var->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && (vreg_to_bb [var->dreg] != -1) && (var->klass->byval_arg.type != MONO_TYPE_R4) && !cfg->disable_vreg_to_lvreg && var != cfg->gsharedvt_info_var && var != cfg->gsharedvt_locals_var) {
12416                                 /*
12417                                  * Make that the variable's liveness interval doesn't contain a call, since
12418                                  * that would cause the lvreg to be spilled, making the whole optimization
12419                                  * useless.
12420                                  */
12421                                 /* This is too slow for JIT compilation */
12422 #if 0
12423                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
12424                                         MonoInst *ins;
12425                                         int def_index, call_index, ins_index;
12426                                         gboolean spilled = FALSE;
12427
12428                                         def_index = -1;
12429                                         call_index = -1;
12430                                         ins_index = 0;
12431                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
12432                                                 const char *spec = INS_INFO (ins->opcode);
12433
12434                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
12435                                                         def_index = ins_index;
12436
12437                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
12438                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
12439                                                         if (call_index > def_index) {
12440                                                                 spilled = TRUE;
12441                                                                 break;
12442                                                         }
12443                                                 }
12444
12445                                                 if (MONO_IS_CALL (ins))
12446                                                         call_index = ins_index;
12447
12448                                                 ins_index ++;
12449                                         }
12450
12451                                         if (spilled)
12452                                                 break;
12453                                 }
12454 #endif
12455
12456                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12457                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
12458                                 var->flags |= MONO_INST_IS_DEAD;
12459                                 cfg->vreg_to_inst [var->dreg] = NULL;
12460                         }
12461                         break;
12462                 }
12463         }
12464
12465         /*
12466          * Compress the varinfo and vars tables so the liveness computation is faster and
12467          * takes up less space.
12468          */
12469         pos = 0;
12470         for (i = 0; i < cfg->num_varinfo; ++i) {
12471                 MonoInst *var = cfg->varinfo [i];
12472                 if (pos < i && cfg->locals_start == i)
12473                         cfg->locals_start = pos;
12474                 if (!(var->flags & MONO_INST_IS_DEAD)) {
12475                         if (pos < i) {
12476                                 cfg->varinfo [pos] = cfg->varinfo [i];
12477                                 cfg->varinfo [pos]->inst_c0 = pos;
12478                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
12479                                 cfg->vars [pos].idx = pos;
12480 #if SIZEOF_REGISTER == 4
12481                                 if (cfg->varinfo [pos]->type == STACK_I8) {
12482                                         /* Modify the two component vars too */
12483                                         MonoInst *var1;
12484
12485                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 1);
12486                                         var1->inst_c0 = pos;
12487                                         var1 = get_vreg_to_inst (cfg, cfg->varinfo [pos]->dreg + 2);
12488                                         var1->inst_c0 = pos;
12489                                 }
12490 #endif
12491                         }
12492                         pos ++;
12493                 }
12494         }
12495         cfg->num_varinfo = pos;
12496         if (cfg->locals_start > cfg->num_varinfo)
12497                 cfg->locals_start = cfg->num_varinfo;
12498 }
12499
12500 /**
12501  * mono_spill_global_vars:
12502  *
12503  *   Generate spill code for variables which are not allocated to registers,
12504  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
12505  * code is generated which could be optimized by the local optimization passes.
12506  */
12507 void
12508 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
12509 {
12510         MonoBasicBlock *bb;
12511         char spec2 [16];
12512         int orig_next_vreg;
12513         guint32 *vreg_to_lvreg;
12514         guint32 *lvregs;
12515         guint32 i, lvregs_len;
12516         gboolean dest_has_lvreg = FALSE;
12517         guint32 stacktypes [128];
12518         MonoInst **live_range_start, **live_range_end;
12519         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
12520         int *gsharedvt_vreg_to_idx = NULL;
12521
12522         *need_local_opts = FALSE;
12523
12524         memset (spec2, 0, sizeof (spec2));
12525
12526         /* FIXME: Move this function to mini.c */
12527         stacktypes ['i'] = STACK_PTR;
12528         stacktypes ['l'] = STACK_I8;
12529         stacktypes ['f'] = STACK_R8;
12530 #ifdef MONO_ARCH_SIMD_INTRINSICS
12531         stacktypes ['x'] = STACK_VTYPE;
12532 #endif
12533
12534 #if SIZEOF_REGISTER == 4
12535         /* Create MonoInsts for longs */
12536         for (i = 0; i < cfg->num_varinfo; i++) {
12537                 MonoInst *ins = cfg->varinfo [i];
12538
12539                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
12540                         switch (ins->type) {
12541                         case STACK_R8:
12542                         case STACK_I8: {
12543                                 MonoInst *tree;
12544
12545                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
12546                                         break;
12547
12548                                 g_assert (ins->opcode == OP_REGOFFSET);
12549
12550                                 tree = get_vreg_to_inst (cfg, ins->dreg + 1);
12551                                 g_assert (tree);
12552                                 tree->opcode = OP_REGOFFSET;
12553                                 tree->inst_basereg = ins->inst_basereg;
12554                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
12555
12556                                 tree = get_vreg_to_inst (cfg, ins->dreg + 2);
12557                                 g_assert (tree);
12558                                 tree->opcode = OP_REGOFFSET;
12559                                 tree->inst_basereg = ins->inst_basereg;
12560                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
12561                                 break;
12562                         }
12563                         default:
12564                                 break;
12565                         }
12566                 }
12567         }
12568 #endif
12569
12570         if (cfg->compute_gc_maps) {
12571                 /* registers need liveness info even for !non refs */
12572                 for (i = 0; i < cfg->num_varinfo; i++) {
12573                         MonoInst *ins = cfg->varinfo [i];
12574
12575                         if (ins->opcode == OP_REGVAR)
12576                                 ins->flags |= MONO_INST_GC_TRACK;
12577                 }
12578         }
12579
12580         if (cfg->gsharedvt) {
12581                 gsharedvt_vreg_to_idx = g_new0 (int, cfg->next_vreg);
12582
12583                 for (i = 0; i < cfg->num_varinfo; ++i) {
12584                         MonoInst *ins = cfg->varinfo [i];
12585                         int idx;
12586
12587                         if (mini_is_gsharedvt_variable_type (cfg, ins->inst_vtype)) {
12588                                 if (i >= cfg->locals_start) {
12589                                         /* Local */
12590                                         idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
12591                                         gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
12592                                         ins->opcode = OP_GSHAREDVT_LOCAL;
12593                                         ins->inst_imm = idx;
12594                                 } else {
12595                                         /* Arg */
12596                                         gsharedvt_vreg_to_idx [ins->dreg] = -1;
12597                                         ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
12598                                 }
12599                         }
12600                 }
12601         }
12602
12603         /* FIXME: widening and truncation */
12604
12605         /*
12606          * As an optimization, when a variable allocated to the stack is first loaded into
12607          * an lvreg, we will remember the lvreg and use it the next time instead of loading
12608          * the variable again.
12609          */
12610         orig_next_vreg = cfg->next_vreg;
12611         vreg_to_lvreg = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
12612         lvregs = mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
12613         lvregs_len = 0;
12614
12615         /*
12616          * These arrays contain the first and last instructions accessing a given
12617          * variable.
12618          * Since we emit bblocks in the same order we process them here, and we
12619          * don't split live ranges, these will precisely describe the live range of
12620          * the variable, i.e. the instruction range where a valid value can be found
12621          * in the variables location.
12622          * The live range is computed using the liveness info computed by the liveness pass.
12623          * We can't use vmv->range, since that is an abstract live range, and we need
12624          * one which is instruction precise.
12625          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
12626          */
12627         /* FIXME: Only do this if debugging info is requested */
12628         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
12629         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
12630         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
12631         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
12632
12633         /* Add spill loads/stores */
12634         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12635                 MonoInst *ins;
12636
12637                 if (cfg->verbose_level > 2)
12638                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
12639
12640                 /* Clear vreg_to_lvreg array */
12641                 for (i = 0; i < lvregs_len; i++)
12642                         vreg_to_lvreg [lvregs [i]] = 0;
12643                 lvregs_len = 0;
12644
12645                 cfg->cbb = bb;
12646                 MONO_BB_FOR_EACH_INS (bb, ins) {
12647                         const char *spec = INS_INFO (ins->opcode);
12648                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
12649                         gboolean store, no_lvreg;
12650                         int sregs [MONO_MAX_SRC_REGS];
12651
12652                         if (G_UNLIKELY (cfg->verbose_level > 2))
12653                                 mono_print_ins (ins);
12654
12655                         if (ins->opcode == OP_NOP)
12656                                 continue;
12657
12658                         /*
12659                          * We handle LDADDR here as well, since it can only be decomposed
12660                          * when variable addresses are known.
12661                          */
12662                         if (ins->opcode == OP_LDADDR) {
12663                                 MonoInst *var = ins->inst_p0;
12664
12665                                 if (var->opcode == OP_VTARG_ADDR) {
12666                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
12667                                         MonoInst *vtaddr = var->inst_left;
12668                                         if (vtaddr->opcode == OP_REGVAR) {
12669                                                 ins->opcode = OP_MOVE;
12670                                                 ins->sreg1 = vtaddr->dreg;
12671                                         }
12672                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
12673                                                 ins->opcode = OP_LOAD_MEMBASE;
12674                                                 ins->inst_basereg = vtaddr->inst_basereg;
12675                                                 ins->inst_offset = vtaddr->inst_offset;
12676                                         } else
12677                                                 NOT_IMPLEMENTED;
12678                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg] < 0) {
12679                                         /* gsharedvt arg passed by ref */
12680                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
12681
12682                                         ins->opcode = OP_LOAD_MEMBASE;
12683                                         ins->inst_basereg = var->inst_basereg;
12684                                         ins->inst_offset = var->inst_offset;
12685                                 } else if (cfg->gsharedvt && gsharedvt_vreg_to_idx [var->dreg]) {
12686                                         MonoInst *load, *load2, *load3;
12687                                         int idx = gsharedvt_vreg_to_idx [var->dreg] - 1;
12688                                         int reg1, reg2, reg3;
12689                                         MonoInst *info_var = cfg->gsharedvt_info_var;
12690                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
12691
12692                                         /*
12693                                          * gsharedvt local.
12694                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
12695                                          */
12696
12697                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
12698
12699                                         g_assert (info_var);
12700                                         g_assert (locals_var);
12701
12702                                         /* Mark the instruction used to compute the locals var as used */
12703                                         cfg->gsharedvt_locals_var_ins = NULL;
12704
12705                                         /* Load the offset */
12706                                         if (info_var->opcode == OP_REGOFFSET) {
12707                                                 reg1 = alloc_ireg (cfg);
12708                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
12709                                         } else if (info_var->opcode == OP_REGVAR) {
12710                                                 load = NULL;
12711                                                 reg1 = info_var->dreg;
12712                                         } else {
12713                                                 g_assert_not_reached ();
12714                                         }
12715                                         reg2 = alloc_ireg (cfg);
12716                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, G_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
12717                                         /* Load the locals area address */
12718                                         reg3 = alloc_ireg (cfg);
12719                                         if (locals_var->opcode == OP_REGOFFSET) {
12720                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
12721                                         } else if (locals_var->opcode == OP_REGVAR) {
12722                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
12723                                         } else {
12724                                                 g_assert_not_reached ();
12725                                         }
12726                                         /* Compute the address */
12727                                         ins->opcode = OP_PADD;
12728                                         ins->sreg1 = reg3;
12729                                         ins->sreg2 = reg2;
12730
12731                                         mono_bblock_insert_before_ins (bb, ins, load3);
12732                                         mono_bblock_insert_before_ins (bb, load3, load2);
12733                                         if (load)
12734                                                 mono_bblock_insert_before_ins (bb, load2, load);
12735                                 } else {
12736                                         g_assert (var->opcode == OP_REGOFFSET);
12737
12738                                         ins->opcode = OP_ADD_IMM;
12739                                         ins->sreg1 = var->inst_basereg;
12740                                         ins->inst_imm = var->inst_offset;
12741                                 }
12742
12743                                 *need_local_opts = TRUE;
12744                                 spec = INS_INFO (ins->opcode);
12745                         }
12746
12747                         if (ins->opcode < MONO_CEE_LAST) {
12748                                 mono_print_ins (ins);
12749                                 g_assert_not_reached ();
12750                         }
12751
12752                         /*
12753                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
12754                          * src register.
12755                          * FIXME:
12756                          */
12757                         if (MONO_IS_STORE_MEMBASE (ins)) {
12758                                 tmp_reg = ins->dreg;
12759                                 ins->dreg = ins->sreg2;
12760                                 ins->sreg2 = tmp_reg;
12761                                 store = TRUE;
12762
12763                                 spec2 [MONO_INST_DEST] = ' ';
12764                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
12765                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
12766                                 spec2 [MONO_INST_SRC3] = ' ';
12767                                 spec = spec2;
12768                         } else if (MONO_IS_STORE_MEMINDEX (ins))
12769                                 g_assert_not_reached ();
12770                         else
12771                                 store = FALSE;
12772                         no_lvreg = FALSE;
12773
12774                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
12775                                 printf ("\t %.3s %d", spec, ins->dreg);
12776                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
12777                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
12778                                         printf (" %d", sregs [srcindex]);
12779                                 printf ("\n");
12780                         }
12781
12782                         /***************/
12783                         /*    DREG     */
12784                         /***************/
12785                         regtype = spec [MONO_INST_DEST];
12786                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
12787                         prev_dreg = -1;
12788
12789                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
12790                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
12791                                 MonoInst *store_ins;
12792                                 int store_opcode;
12793                                 MonoInst *def_ins = ins;
12794                                 int dreg = ins->dreg; /* The original vreg */
12795
12796                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
12797
12798                                 if (var->opcode == OP_REGVAR) {
12799                                         ins->dreg = var->dreg;
12800                                 } 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)) {
12801                                         /*
12802                                          * Instead of emitting a load+store, use a _membase opcode.
12803                                          */
12804                                         g_assert (var->opcode == OP_REGOFFSET);
12805                                         if (ins->opcode == OP_MOVE) {
12806                                                 NULLIFY_INS (ins);
12807                                                 def_ins = NULL;
12808                                         } else {
12809                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
12810                                                 ins->inst_basereg = var->inst_basereg;
12811                                                 ins->inst_offset = var->inst_offset;
12812                                                 ins->dreg = -1;
12813                                         }
12814                                         spec = INS_INFO (ins->opcode);
12815                                 } else {
12816                                         guint32 lvreg;
12817
12818                                         g_assert (var->opcode == OP_REGOFFSET);
12819
12820                                         prev_dreg = ins->dreg;
12821
12822                                         /* Invalidate any previous lvreg for this vreg */
12823                                         vreg_to_lvreg [ins->dreg] = 0;
12824
12825                                         lvreg = 0;
12826
12827                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
12828                                                 regtype = 'l';
12829                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
12830                                         }
12831
12832                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
12833
12834 #if SIZEOF_REGISTER != 8
12835                                         if (regtype == 'l') {
12836                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
12837                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
12838                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
12839                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
12840                                                 def_ins = store_ins;
12841                                         }
12842                                         else
12843 #endif
12844                                         {
12845                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
12846
12847                                                 /* Try to fuse the store into the instruction itself */
12848                                                 /* FIXME: Add more instructions */
12849                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
12850                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
12851                                                         ins->inst_imm = ins->inst_c0;
12852                                                         ins->inst_destbasereg = var->inst_basereg;
12853                                                         ins->inst_offset = var->inst_offset;
12854                                                         spec = INS_INFO (ins->opcode);
12855                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE))) {
12856                                                         ins->opcode = store_opcode;
12857                                                         ins->inst_destbasereg = var->inst_basereg;
12858                                                         ins->inst_offset = var->inst_offset;
12859
12860                                                         no_lvreg = TRUE;
12861
12862                                                         tmp_reg = ins->dreg;
12863                                                         ins->dreg = ins->sreg2;
12864                                                         ins->sreg2 = tmp_reg;
12865                                                         store = TRUE;
12866
12867                                                         spec2 [MONO_INST_DEST] = ' ';
12868                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
12869                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
12870                                                         spec2 [MONO_INST_SRC3] = ' ';
12871                                                         spec = spec2;
12872                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
12873                                                         // FIXME: The backends expect the base reg to be in inst_basereg
12874                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
12875                                                         ins->dreg = -1;
12876                                                         ins->inst_basereg = var->inst_basereg;
12877                                                         ins->inst_offset = var->inst_offset;
12878                                                         spec = INS_INFO (ins->opcode);
12879                                                 } else {
12880                                                         /* printf ("INS: "); mono_print_ins (ins); */
12881                                                         /* Create a store instruction */
12882                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
12883
12884                                                         /* Insert it after the instruction */
12885                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
12886
12887                                                         def_ins = store_ins;
12888
12889                                                         /*
12890                                                          * We can't assign ins->dreg to var->dreg here, since the
12891                                                          * sregs could use it. So set a flag, and do it after
12892                                                          * the sregs.
12893                                                          */
12894                                                         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)))
12895                                                                 dest_has_lvreg = TRUE;
12896                                                 }
12897                                         }
12898                                 }
12899
12900                                 if (def_ins && !live_range_start [dreg]) {
12901                                         live_range_start [dreg] = def_ins;
12902                                         live_range_start_bb [dreg] = bb;
12903                                 }
12904
12905                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
12906                                         MonoInst *tmp;
12907
12908                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
12909                                         tmp->inst_c1 = dreg;
12910                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
12911                                 }
12912                         }
12913
12914                         /************/
12915                         /*  SREGS   */
12916                         /************/
12917                         num_sregs = mono_inst_get_src_registers (ins, sregs);
12918                         for (srcindex = 0; srcindex < 3; ++srcindex) {
12919                                 regtype = spec [MONO_INST_SRC1 + srcindex];
12920                                 sreg = sregs [srcindex];
12921
12922                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
12923                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
12924                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
12925                                         MonoInst *use_ins = ins;
12926                                         MonoInst *load_ins;
12927                                         guint32 load_opcode;
12928
12929                                         if (var->opcode == OP_REGVAR) {
12930                                                 sregs [srcindex] = var->dreg;
12931                                                 //mono_inst_set_src_registers (ins, sregs);
12932                                                 live_range_end [sreg] = use_ins;
12933                                                 live_range_end_bb [sreg] = bb;
12934
12935                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
12936                                                         MonoInst *tmp;
12937
12938                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
12939                                                         /* var->dreg is a hreg */
12940                                                         tmp->inst_c1 = sreg;
12941                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
12942                                                 }
12943
12944                                                 continue;
12945                                         }
12946
12947                                         g_assert (var->opcode == OP_REGOFFSET);
12948
12949                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
12950
12951                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
12952
12953                                         if (vreg_to_lvreg [sreg]) {
12954                                                 g_assert (vreg_to_lvreg [sreg] != -1);
12955
12956                                                 /* The variable is already loaded to an lvreg */
12957                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
12958                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
12959                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
12960                                                 //mono_inst_set_src_registers (ins, sregs);
12961                                                 continue;
12962                                         }
12963
12964                                         /* Try to fuse the load into the instruction */
12965                                         if ((srcindex == 0) && (op_to_op_src1_membase (load_opcode, ins->opcode) != -1)) {
12966                                                 ins->opcode = op_to_op_src1_membase (load_opcode, ins->opcode);
12967                                                 sregs [0] = var->inst_basereg;
12968                                                 //mono_inst_set_src_registers (ins, sregs);
12969                                                 ins->inst_offset = var->inst_offset;
12970                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (load_opcode, ins->opcode) != -1)) {
12971                                                 ins->opcode = op_to_op_src2_membase (load_opcode, ins->opcode);
12972                                                 sregs [1] = var->inst_basereg;
12973                                                 //mono_inst_set_src_registers (ins, sregs);
12974                                                 ins->inst_offset = var->inst_offset;
12975                                         } else {
12976                                                 if (MONO_IS_REAL_MOVE (ins)) {
12977                                                         ins->opcode = OP_NOP;
12978                                                         sreg = ins->dreg;
12979                                                 } else {
12980                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
12981
12982                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
12983
12984                                                         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) {
12985                                                                 if (var->dreg == prev_dreg) {
12986                                                                         /*
12987                                                                          * sreg refers to the value loaded by the load
12988                                                                          * emitted below, but we need to use ins->dreg
12989                                                                          * since it refers to the store emitted earlier.
12990                                                                          */
12991                                                                         sreg = ins->dreg;
12992                                                                 }
12993                                                                 g_assert (sreg != -1);
12994                                                                 vreg_to_lvreg [var->dreg] = sreg;
12995                                                                 g_assert (lvregs_len < 1024);
12996                                                                 lvregs [lvregs_len ++] = var->dreg;
12997                                                         }
12998                                                 }
12999
13000                                                 sregs [srcindex] = sreg;
13001                                                 //mono_inst_set_src_registers (ins, sregs);
13002
13003 #if SIZEOF_REGISTER != 8
13004                                                 if (regtype == 'l') {
13005                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13006                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13007                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13008                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13009                                                         use_ins = load_ins;
13010                                                 }
13011                                                 else
13012 #endif
13013                                                 {
13014 #if SIZEOF_REGISTER == 4
13015                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13016 #endif
13017                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13018                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13019                                                         use_ins = load_ins;
13020                                                 }
13021                                         }
13022
13023                                         if (var->dreg < orig_next_vreg) {
13024                                                 live_range_end [var->dreg] = use_ins;
13025                                                 live_range_end_bb [var->dreg] = bb;
13026                                         }
13027
13028                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13029                                                 MonoInst *tmp;
13030
13031                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13032                                                 tmp->inst_c1 = var->dreg;
13033                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
13034                                         }
13035                                 }
13036                         }
13037                         mono_inst_set_src_registers (ins, sregs);
13038
13039                         if (dest_has_lvreg) {
13040                                 g_assert (ins->dreg != -1);
13041                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
13042                                 g_assert (lvregs_len < 1024);
13043                                 lvregs [lvregs_len ++] = prev_dreg;
13044                                 dest_has_lvreg = FALSE;
13045                         }
13046
13047                         if (store) {
13048                                 tmp_reg = ins->dreg;
13049                                 ins->dreg = ins->sreg2;
13050                                 ins->sreg2 = tmp_reg;
13051                         }
13052
13053                         if (MONO_IS_CALL (ins)) {
13054                                 /* Clear vreg_to_lvreg array */
13055                                 for (i = 0; i < lvregs_len; i++)
13056                                         vreg_to_lvreg [lvregs [i]] = 0;
13057                                 lvregs_len = 0;
13058                         } else if (ins->opcode == OP_NOP) {
13059                                 ins->dreg = -1;
13060                                 MONO_INST_NULLIFY_SREGS (ins);
13061                         }
13062
13063                         if (cfg->verbose_level > 2)
13064                                 mono_print_ins_index (1, ins);
13065                 }
13066
13067                 /* Extend the live range based on the liveness info */
13068                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
13069                         for (i = 0; i < cfg->num_varinfo; i ++) {
13070                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
13071
13072                                 if (vreg_is_volatile (cfg, vi->vreg))
13073                                         /* The liveness info is incomplete */
13074                                         continue;
13075
13076                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
13077                                         /* Live from at least the first ins of this bb */
13078                                         live_range_start [vi->vreg] = bb->code;
13079                                         live_range_start_bb [vi->vreg] = bb;
13080                                 }
13081
13082                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
13083                                         /* Live at least until the last ins of this bb */
13084                                         live_range_end [vi->vreg] = bb->last_ins;
13085                                         live_range_end_bb [vi->vreg] = bb;
13086                                 }
13087                         }
13088                 }
13089         }
13090
13091 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
13092         /*
13093          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
13094          * by storing the current native offset into MonoMethodVar->live_range_start/end.
13095          */
13096         if (cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
13097                 for (i = 0; i < cfg->num_varinfo; ++i) {
13098                         int vreg = MONO_VARINFO (cfg, i)->vreg;
13099                         MonoInst *ins;
13100
13101                         if (live_range_start [vreg]) {
13102                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
13103                                 ins->inst_c0 = i;
13104                                 ins->inst_c1 = vreg;
13105                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
13106                         }
13107                         if (live_range_end [vreg]) {
13108                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
13109                                 ins->inst_c0 = i;
13110                                 ins->inst_c1 = vreg;
13111                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
13112                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
13113                                 else
13114                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
13115                         }
13116                 }
13117         }
13118 #endif
13119
13120         if (cfg->gsharedvt_locals_var_ins) {
13121                 /* Nullify if unused */
13122                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
13123                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
13124         }
13125
13126         g_free (live_range_start);
13127         g_free (live_range_end);
13128         g_free (live_range_start_bb);
13129         g_free (live_range_end_bb);
13130 }
13131
13132 /**
13133  * FIXME:
13134  * - use 'iadd' instead of 'int_add'
13135  * - handling ovf opcodes: decompose in method_to_ir.
13136  * - unify iregs/fregs
13137  *   -> partly done, the missing parts are:
13138  *   - a more complete unification would involve unifying the hregs as well, so
13139  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
13140  *     would no longer map to the machine hregs, so the code generators would need to
13141  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
13142  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
13143  *     fp/non-fp branches speeds it up by about 15%.
13144  * - use sext/zext opcodes instead of shifts
13145  * - add OP_ICALL
13146  * - get rid of TEMPLOADs if possible and use vregs instead
13147  * - clean up usage of OP_P/OP_ opcodes
13148  * - cleanup usage of DUMMY_USE
13149  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
13150  *   stack
13151  * - set the stack type and allocate a dreg in the EMIT_NEW macros
13152  * - get rid of all the <foo>2 stuff when the new JIT is ready.
13153  * - make sure handle_stack_args () is called before the branch is emitted
13154  * - when the new IR is done, get rid of all unused stuff
13155  * - COMPARE/BEQ as separate instructions or unify them ?
13156  *   - keeping them separate allows specialized compare instructions like
13157  *     compare_imm, compare_membase
13158  *   - most back ends unify fp compare+branch, fp compare+ceq
13159  * - integrate mono_save_args into inline_method
13160  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
13161  * - handle long shift opts on 32 bit platforms somehow: they require
13162  *   3 sregs (2 for arg1 and 1 for arg2)
13163  * - make byref a 'normal' type.
13164  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
13165  *   variable if needed.
13166  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
13167  *   like inline_method.
13168  * - remove inlining restrictions
13169  * - fix LNEG and enable cfold of INEG
13170  * - generalize x86 optimizations like ldelema as a peephole optimization
13171  * - add store_mem_imm for amd64
13172  * - optimize the loading of the interruption flag in the managed->native wrappers
13173  * - avoid special handling of OP_NOP in passes
13174  * - move code inserting instructions into one function/macro.
13175  * - try a coalescing phase after liveness analysis
13176  * - add float -> vreg conversion + local optimizations on !x86
13177  * - figure out how to handle decomposed branches during optimizations, ie.
13178  *   compare+branch, op_jump_table+op_br etc.
13179  * - promote RuntimeXHandles to vregs
13180  * - vtype cleanups:
13181  *   - add a NEW_VARLOADA_VREG macro
13182  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
13183  *   accessing vtype fields.
13184  * - get rid of I8CONST on 64 bit platforms
13185  * - dealing with the increase in code size due to branches created during opcode
13186  *   decomposition:
13187  *   - use extended basic blocks
13188  *     - all parts of the JIT
13189  *     - handle_global_vregs () && local regalloc
13190  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
13191  * - sources of increase in code size:
13192  *   - vtypes
13193  *   - long compares
13194  *   - isinst and castclass
13195  *   - lvregs not allocated to global registers even if used multiple times
13196  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
13197  *   meaningful.
13198  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
13199  * - add all micro optimizations from the old JIT
13200  * - put tree optimizations into the deadce pass
13201  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
13202  *   specific function.
13203  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
13204  *   fcompare + branchCC.
13205  * - create a helper function for allocating a stack slot, taking into account
13206  *   MONO_CFG_HAS_SPILLUP.
13207  * - merge r68207.
13208  * - merge the ia64 switch changes.
13209  * - optimize mono_regstate2_alloc_int/float.
13210  * - fix the pessimistic handling of variables accessed in exception handler blocks.
13211  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
13212  *   parts of the tree could be separated by other instructions, killing the tree
13213  *   arguments, or stores killing loads etc. Also, should we fold loads into other
13214  *   instructions if the result of the load is used multiple times ?
13215  * - make the REM_IMM optimization in mini-x86.c arch-independent.
13216  * - LAST MERGE: 108395.
13217  * - when returning vtypes in registers, generate IR and append it to the end of the
13218  *   last bb instead of doing it in the epilog.
13219  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
13220  */
13221
13222 /*
13223
13224 NOTES
13225 -----
13226
13227 - When to decompose opcodes:
13228   - earlier: this makes some optimizations hard to implement, since the low level IR
13229   no longer contains the neccessary information. But it is easier to do.
13230   - later: harder to implement, enables more optimizations.
13231 - Branches inside bblocks:
13232   - created when decomposing complex opcodes.
13233     - branches to another bblock: harmless, but not tracked by the branch
13234       optimizations, so need to branch to a label at the start of the bblock.
13235     - branches to inside the same bblock: very problematic, trips up the local
13236       reg allocator. Can be fixed by spitting the current bblock, but that is a
13237       complex operation, since some local vregs can become global vregs etc.
13238 - Local/global vregs:
13239   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
13240     local register allocator.
13241   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
13242     structure, created by mono_create_var (). Assigned to hregs or the stack by
13243     the global register allocator.
13244 - When to do optimizations like alu->alu_imm:
13245   - earlier -> saves work later on since the IR will be smaller/simpler
13246   - later -> can work on more instructions
13247 - Handling of valuetypes:
13248   - When a vtype is pushed on the stack, a new temporary is created, an
13249     instruction computing its address (LDADDR) is emitted and pushed on
13250     the stack. Need to optimize cases when the vtype is used immediately as in
13251     argument passing, stloc etc.
13252 - Instead of the to_end stuff in the old JIT, simply call the function handling
13253   the values on the stack before emitting the last instruction of the bb.
13254 */
13255
13256 #endif /* DISABLE_JIT */