nsz Git - libfirm/blob - ir/tr/entity.c

   1 /*
   2  * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Representation of all program known entities.
  23  * @author  Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Michael Beck
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <stddef.h>
  31
  32 #include "xmalloc.h"
  33 #include "entity_t.h"
  34 #include "array.h"
  35 #include "irtools.h"
  36 #include "irhooks.h"
  37 #include "irprintf.h"
  38
  39 #include "irprog_t.h"
  40 #include "ircons.h"
  41 #include "tv_t.h"
  42 #include "irdump.h"
  43 #include "irgraph_t.h"
  44 #include "callgraph.h"
  45 #include "error.h"
  46 #include "compound_path.h"
  47
  48 /*-----------------------------------------------------------------*/
  49 /** general                                                       **/
  50 /*-----------------------------------------------------------------*/
  51
  52 ir_entity *unknown_entity = NULL;
  53
  54 ir_entity *get_unknown_entity(void) { return unknown_entity; }
  55
  56 /** The name of the unknown entity. */
  57 #define UNKNOWN_ENTITY_NAME "unknown_entity"
  58
  59 /*-----------------------------------------------------------------*/
  60 /* ENTITY                                                          */
  61 /*-----------------------------------------------------------------*/
  62
  63 ir_entity *new_d_entity(ir_type *owner, ident *name, ir_type *type,
  64                         dbg_info *db)
  65 {
  66         ir_entity *res;
  67
  68         assert(!id_contains_char(name, ' ') && "entity name should not contain spaces");
  69
  70         res = XMALLOCZ(ir_entity);
  71
  72         res->kind    = k_entity;
  73         res->name    = name;
  74         res->ld_name = NULL;
  75         res->type    = type;
  76         res->owner   = owner;
  77
  78         res->volatility           = volatility_non_volatile;
  79         res->aligned              = align_is_aligned;
  80         res->usage                = ir_usage_unknown;
  81         res->compiler_gen         = 0;
  82         res->visibility           = ir_visibility_default;
  83         res->offset               = -1;
  84         res->offset_bit_remainder = 0;
  85         res->alignment            = 0;
  86         res->link                 = NULL;
  87         res->repr_class           = NULL;
  88
  89         if (is_Method_type(type)) {
  90                 ir_graph *irg = get_const_code_irg();
  91                 symconst_symbol sym;
  92                 ir_mode *mode = is_Method_type(type) ? mode_P_code : mode_P_data;
  93                 sym.entity_p            = res;
  94                 set_atomic_ent_value(res, new_r_SymConst(irg, mode, sym, symconst_addr_ent));
  95                 res->linkage            = IR_LINKAGE_CONSTANT;
  96                 res->attr.mtd_attr.irg_add_properties = mtp_property_inherited;
  97                 res->attr.mtd_attr.vtable_number      = IR_VTABLE_NUM_NOT_SET;
  98                 res->attr.mtd_attr.param_access       = NULL;
  99                 res->attr.mtd_attr.param_weight       = NULL;
 100                 res->attr.mtd_attr.irg                = NULL;
 101         } else if (is_compound_type(type)) {
 102                 res->attr.cmpd_attr.values    = NULL;
 103                 res->attr.cmpd_attr.val_paths = NULL;
 104         } else if (is_code_type(type)) {
 105                 res->attr.code_attr.label = (ir_label_t) -1;
 106         }
 107
 108         /* Remember entity in its owner. */
 109         if (owner != NULL)
 110                 add_compound_member(owner, res);
 111
 112 #ifdef DEBUG_libfirm
 113         res->nr = get_irp_new_node_nr();
 114 #endif
 115
 116         res->visit = 0;
 117         set_entity_dbg_info(res, db);
 118
 119         hook_new_entity(res);
 120
 121         return res;
 122 }
 123
 124 ir_entity *new_entity(ir_type *owner, ident *name, ir_type *type)
 125 {
 126         return new_d_entity(owner, name, type, NULL);
 127 }
 128
 129 /**
 130  * Free entity attributes.
 131  *
 132  * @param ent  the entity
 133  */
 134 static void free_entity_attrs(ir_entity *ent)
 135 {
 136         if (ent->overwrites != NULL) {
 137                 DEL_ARR_F(ent->overwrites);
 138                 ent->overwrites = NULL;
 139         }
 140         if (ent->overwrittenby != NULL) {
 141                 DEL_ARR_F(ent->overwrittenby);
 142                 ent->overwrittenby = NULL;
 143         }
 144
 145         if (ent->initializer != NULL) {
 146                 /* TODO: free initializers */
 147         } else if (entity_has_compound_ent_values(ent)) {
 148                 /* can't free compound graph path as it might be used
 149                  * multiple times */
 150                 ent->attr.cmpd_attr.val_paths = NULL;
 151         }
 152         if (is_compound_entity(ent)) {
 153                 ent->attr.cmpd_attr.values = NULL;
 154         } else if (is_method_entity(ent)) {
 155                 if (ent->attr.mtd_attr.param_access) {
 156                         DEL_ARR_F(ent->attr.mtd_attr.param_access);
 157                         ent->attr.mtd_attr.param_access = NULL;
 158                 }
 159                 if (ent->attr.mtd_attr.param_weight) {
 160                         DEL_ARR_F(ent->attr.mtd_attr.param_weight);
 161                         ent->attr.mtd_attr.param_weight = NULL;
 162                 }
 163         }
 164 }
 165
 166 /**
 167  * Creates a deep copy of an entity.
 168  */
 169 static ir_entity *deep_entity_copy(ir_entity *old)
 170 {
 171         ir_entity *newe = XMALLOC(ir_entity);
 172
 173         *newe = *old;
 174         if (old->initializer != NULL) {
 175                 /* FIXME: the initializers are NOT copied */
 176         } else if (entity_has_compound_ent_values(old)) {
 177                 newe->attr.cmpd_attr.values    = NULL;
 178                 newe->attr.cmpd_attr.val_paths = NULL;
 179                 if (old->attr.cmpd_attr.values)
 180                         newe->attr.cmpd_attr.values = DUP_ARR_F(ir_node *, old->attr.cmpd_attr.values);
 181
 182                 /* FIXME: the compound graph paths are NOT copied */
 183                 if (old->attr.cmpd_attr.val_paths)
 184                         newe->attr.cmpd_attr.val_paths = DUP_ARR_F(compound_graph_path *, old->attr.cmpd_attr.val_paths);
 185         } else if (is_method_entity(old)) {
 186                 /* do NOT copy them, reanalyze. This might be the best solution */
 187                 newe->attr.mtd_attr.param_access = NULL;
 188                 newe->attr.mtd_attr.param_weight = NULL;
 189         }
 190         newe->overwrites    = NULL;
 191         newe->overwrittenby = NULL;
 192
 193 #ifdef DEBUG_libfirm
 194         newe->nr = get_irp_new_node_nr();
 195 #endif
 196         hook_new_entity(newe);
 197         return newe;
 198 }
 199
 200 /*
 201  * Copies the entity if the new_owner is different from the
 202  * owner of the old entity,  else returns the old entity.
 203  */
 204 ir_entity *copy_entity_own(ir_entity *old, ir_type *new_owner)
 205 {
 206         ir_entity *newe;
 207         assert(is_entity(old));
 208         assert(is_compound_type(new_owner));
 209         assert(get_type_state(new_owner) != layout_fixed);
 210
 211         if (old->owner == new_owner)
 212                 return old;
 213
 214         /* create a deep copy so we are safe of aliasing and double-freeing. */
 215         newe        = deep_entity_copy(old);
 216         newe->owner = new_owner;
 217         add_compound_member(new_owner, newe);
 218
 219         return newe;
 220 }
 221
 222 ir_entity *copy_entity_name(ir_entity *old, ident *new_name)
 223 {
 224         ir_entity *newe;
 225         assert(old && old->kind == k_entity);
 226
 227         if (old->name == new_name)
 228                 return old;
 229
 230         newe       = deep_entity_copy(old);
 231         newe->name = new_name;
 232         newe->ld_name = NULL;
 233         add_compound_member(old->owner, newe);
 234
 235         return newe;
 236 }
 237
 238 void free_entity(ir_entity *ent)
 239 {
 240         if (ent->owner != NULL && !is_Array_type(ent->owner))
 241                 remove_compound_member(ent->owner, ent);
 242
 243         assert(ent && ent->kind == k_entity);
 244         free_entity_attrs(ent);
 245         ent->kind = k_BAD;
 246         xfree(ent);
 247 }
 248
 249 /* Outputs a unique number for this node */
 250 long get_entity_nr(const ir_entity *ent)
 251 {
 252         assert(ent && ent->kind == k_entity);
 253 #ifdef DEBUG_libfirm
 254         return ent->nr;
 255 #else
 256         return (long)PTR_TO_INT(ent);
 257 #endif
 258 }
 259
 260 const char *(get_entity_name)(const ir_entity *ent)
 261 {
 262         return _get_entity_name(ent);
 263 }
 264
 265 ident *(get_entity_ident)(const ir_entity *ent)
 266 {
 267         return _get_entity_ident(ent);
 268 }
 269
 270 void (set_entity_ident)(ir_entity *ent, ident *id)
 271 {
 272         _set_entity_ident(ent, id);
 273 }
 274
 275 ir_type *(get_entity_owner)(const ir_entity *ent)
 276 {
 277         return _get_entity_owner(ent);
 278 }
 279
 280 void set_entity_owner(ir_entity *ent, ir_type *owner)
 281 {
 282         assert(is_entity(ent));
 283         assert(is_compound_type(owner));
 284
 285         remove_compound_member(ent->owner, ent);
 286         add_compound_member(owner, ent);
 287         ent->owner = owner;
 288 }
 289
 290 ident *(get_entity_ld_ident)(const ir_entity *ent)
 291 {
 292         return _get_entity_ld_ident(ent);
 293 }
 294
 295 void (set_entity_ld_ident)(ir_entity *ent, ident *ld_ident)
 296 {
 297         _set_entity_ld_ident(ent, ld_ident);
 298 }
 299
 300 const char *(get_entity_ld_name)(const ir_entity *ent)
 301 {
 302         return _get_entity_ld_name(ent);
 303 }
 304
 305 int entity_has_ld_ident(const ir_entity *entity)
 306 {
 307         return entity->ld_name != NULL;
 308 }
 309
 310 ir_type *(get_entity_type)(const ir_entity *ent)
 311 {
 312         return _get_entity_type(ent);
 313 }
 314
 315 void (set_entity_type)(ir_entity *ent, ir_type *type)
 316 {
 317         _set_entity_type(ent, type);
 318 }
 319
 320 ir_volatility (get_entity_volatility)(const ir_entity *ent)
 321 {
 322         return _get_entity_volatility(ent);
 323 }
 324
 325 void (set_entity_volatility)(ir_entity *ent, ir_volatility vol)
 326 {
 327         _set_entity_volatility(ent, vol);
 328 }
 329
 330 /* Return the name of the volatility. */
 331 const char *get_volatility_name(ir_volatility var)
 332 {
 333 #define X(a)    case a: return #a
 334         switch (var) {
 335         X(volatility_non_volatile);
 336         X(volatility_is_volatile);
 337     default: return "BAD VALUE";
 338         }
 339 #undef X
 340 }
 341
 342 ir_align (get_entity_aligned)(const ir_entity *ent)
 343 {
 344         return _get_entity_aligned(ent);
 345 }
 346
 347 void (set_entity_aligned)(ir_entity *ent, ir_align a)
 348 {
 349         _set_entity_aligned(ent, a);
 350 }
 351
 352 unsigned (get_entity_alignment)(const ir_entity *ent)
 353 {
 354         return _get_entity_alignment(ent);
 355 }
 356
 357 void (set_entity_alignment)(ir_entity *ent, unsigned alignment)
 358 {
 359         _set_entity_alignment(ent, alignment);
 360 }
 361
 362 /* Return the name of the alignment. */
 363 const char *get_align_name(ir_align a)
 364 {
 365 #define X(a)    case a: return #a
 366         switch (a) {
 367         X(align_non_aligned);
 368         X(align_is_aligned);
 369         default: return "BAD VALUE";
 370         }
 371 #undef X
 372 }
 373
 374 void set_entity_label(ir_entity *ent, ir_label_t label)
 375 {
 376         ent->attr.code_attr.label = label;
 377 }
 378
 379 ir_label_t get_entity_label(const ir_entity *ent)
 380 {
 381         return ent->attr.code_attr.label;
 382 }
 383
 384 static void verify_visibility(const ir_entity *entity)
 385 {
 386         if (get_entity_visibility(entity) == ir_visibility_external
 387                         && !is_method_entity(entity)) {
 388                 assert(!entity_has_definition(entity));
 389         }
 390 }
 391
 392 void set_entity_visibility(ir_entity *entity, ir_visibility visibility)
 393 {
 394         entity->visibility = visibility;
 395         verify_visibility(entity);
 396 }
 397
 398 ir_visibility get_entity_visibility(const ir_entity *entity)
 399 {
 400         return (ir_visibility)entity->visibility;
 401 }
 402
 403 void set_entity_linkage(ir_entity *entity, ir_linkage linkage)
 404 {
 405         entity->linkage = linkage;
 406 }
 407
 408 ir_linkage (get_entity_linkage)(const ir_entity *entity)
 409 {
 410         return get_entity_linkage(entity);
 411 }
 412
 413 void add_entity_linkage(ir_entity *entity, ir_linkage linkage)
 414 {
 415         entity->linkage |= linkage;
 416 }
 417
 418 void remove_entity_linkage(ir_entity *entity, ir_linkage linkage)
 419 {
 420         entity->linkage &= ~linkage;
 421 }
 422
 423 /* Checks if an entity is compiler generated */
 424 int (is_entity_compiler_generated)(const ir_entity *ent)
 425 {
 426         return _is_entity_compiler_generated(ent);
 427 }
 428
 429 /* Sets/resets the compiler generated flag */
 430 void (set_entity_compiler_generated)(ir_entity *ent, int flag)
 431 {
 432         _set_entity_compiler_generated(ent, flag);
 433 }
 434
 435 ir_entity_usage (get_entity_usage)(const ir_entity *ent)
 436 {
 437         return _get_entity_usage(ent);
 438 }
 439
 440 void (set_entity_usage)(ir_entity *ent, ir_entity_usage flags)
 441 {
 442         _set_entity_usage(ent, flags);
 443 }
 444
 445 /* Set has no effect for existent entities of type method. */
 446 ir_node *get_atomic_ent_value(ir_entity *entity)
 447 {
 448         ir_initializer_t *initializer = get_entity_initializer(entity);
 449
 450         assert(entity && is_atomic_entity(entity));
 451         if (initializer == NULL) {
 452                 ir_type *type = get_entity_type(entity);
 453                 return new_r_Unknown(get_const_code_irg(), get_type_mode(type));
 454         }
 455
 456         switch (get_initializer_kind(initializer)) {
 457         case IR_INITIALIZER_NULL: {
 458                 ir_type *type = get_entity_type(entity);
 459                 ir_mode *mode = get_type_mode(type);
 460                 return new_r_Const(get_const_code_irg(), get_mode_null(mode));
 461         }
 462         case IR_INITIALIZER_TARVAL: {
 463                 ir_tarval *tv = get_initializer_tarval_value(initializer);
 464                 return new_r_Const(get_const_code_irg(), tv);
 465         }
 466         case IR_INITIALIZER_CONST:
 467                 return get_initializer_const_value(initializer);
 468         case IR_INITIALIZER_COMPOUND:
 469                 panic("compound initializer in atomic entity not allowed (%+F)", entity);
 470         }
 471
 472         panic("invalid initializer kind in get_atomic_ent_value(%+F)", entity);
 473 }
 474
 475 void set_atomic_ent_value(ir_entity *entity, ir_node *val)
 476 {
 477         ir_initializer_t *initializer;
 478
 479         assert(is_atomic_entity(entity));
 480
 481         assert(is_Dummy(val) || get_irn_mode(val) == get_type_mode(entity->type));
 482         initializer = create_initializer_const(val);
 483         entity->initializer = initializer;
 484 }
 485
 486 /* Returns true if the the node is representable as code on
 487  *  const_code_irg. */
 488 int is_irn_const_expression(ir_node *n)
 489 {
 490         /* we are in danger iff an exception will arise. TODO: be more precisely,
 491          * for instance Div. will NOT rise if divisor != 0
 492          */
 493         if (is_binop(n) && !is_fragile_op(n))
 494                 return is_irn_const_expression(get_binop_left(n)) && is_irn_const_expression(get_binop_right(n));
 495
 496         switch (get_irn_opcode(n)) {
 497         case iro_Const:
 498         case iro_SymConst:
 499         case iro_Unknown:
 500                 return 1;
 501         case iro_Conv:
 502         case iro_Cast:
 503                 return is_irn_const_expression(get_irn_n(n, 0));
 504         default:
 505                 break;
 506         }
 507         return 0;
 508 }
 509
 510 /*
 511  * Copies a firm subgraph that complies to the restrictions for
 512  * constant expressions to block.
 513  */
 514 ir_node *copy_const_value(dbg_info *dbg, ir_node *n, ir_node *block)
 515 {
 516         ir_graph *irg = get_irn_irg(block);
 517         ir_node *nn;
 518         ir_mode *m;
 519
 520         /* @@@ GL I think  we should implement this using the routines from irgopt for
 521                dead node elimination/inlineing. */
 522
 523         m = get_irn_mode(n);
 524         switch (get_irn_opcode(n)) {
 525         case iro_Const:
 526                 nn = new_rd_Const(dbg, irg, get_Const_tarval(n));
 527                 break;
 528         case iro_SymConst:
 529                 nn = new_rd_SymConst(dbg, irg, get_irn_mode(n), get_SymConst_symbol(n), get_SymConst_kind(n));
 530                 break;
 531         case iro_Add:
 532                 nn = new_rd_Add(dbg, block,
 533                                 copy_const_value(dbg, get_Add_left(n), block),
 534                                 copy_const_value(dbg, get_Add_right(n), block), m);
 535                 break;
 536         case iro_Sub:
 537                 nn = new_rd_Sub(dbg, block,
 538                                 copy_const_value(dbg, get_Sub_left(n), block),
 539                                 copy_const_value(dbg, get_Sub_right(n), block), m);
 540                 break;
 541         case iro_Mul:
 542                 nn = new_rd_Mul(dbg, block,
 543                                 copy_const_value(dbg, get_Mul_left(n), block),
 544                                 copy_const_value(dbg, get_Mul_right(n), block), m);
 545                 break;
 546         case iro_And:
 547                 nn = new_rd_And(dbg, block,
 548                                 copy_const_value(dbg, get_And_left(n), block),
 549                                 copy_const_value(dbg, get_And_right(n), block), m);
 550                 break;
 551         case iro_Or:
 552                 nn = new_rd_Or(dbg, block,
 553                                copy_const_value(dbg, get_Or_left(n), block),
 554                                copy_const_value(dbg, get_Or_right(n), block), m);
 555                 break;
 556         case iro_Eor:
 557                 nn = new_rd_Eor(dbg, block,
 558                                 copy_const_value(dbg, get_Eor_left(n), block),
 559                                 copy_const_value(dbg, get_Eor_right(n), block), m);
 560                 break;
 561         case iro_Cast:
 562                 nn = new_rd_Cast(dbg, block,
 563                                  copy_const_value(dbg, get_Cast_op(n), block),
 564                                  get_Cast_type(n));
 565                 break;
 566         case iro_Conv:
 567                 nn = new_rd_Conv(dbg, block,
 568                                  copy_const_value(dbg, get_Conv_op(n), block), m);
 569                 break;
 570         case iro_Unknown:
 571                 nn = new_r_Unknown(irg, m); break;
 572         default:
 573                 panic("opcode invalid or not implemented");
 574         }
 575         return nn;
 576 }
 577
 578 /** Return the name of the initializer kind. */
 579 const char *get_initializer_kind_name(ir_initializer_kind_t ini)
 580 {
 581 #define X(a)    case a: return #a
 582         switch (ini) {
 583         X(IR_INITIALIZER_CONST);
 584         X(IR_INITIALIZER_TARVAL);
 585         X(IR_INITIALIZER_NULL);
 586         X(IR_INITIALIZER_COMPOUND);
 587     default: return "BAD VALUE";
 588         }
 589 #undef X
 590 }
 591
 592 static ir_initializer_t null_initializer = { IR_INITIALIZER_NULL };
 593
 594 ir_initializer_t *get_initializer_null(void)
 595 {
 596         return &null_initializer;
 597 }
 598
 599 ir_initializer_t *create_initializer_const(ir_node *value)
 600 {
 601         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 602
 603         ir_initializer_t *initializer
 604                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_const_t);
 605         initializer->kind         = IR_INITIALIZER_CONST;
 606         initializer->consti.value = value;
 607
 608         return initializer;
 609 }
 610
 611 ir_initializer_t *create_initializer_tarval(ir_tarval *tv)
 612 {
 613         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 614
 615         ir_initializer_t *initializer
 616                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_tarval_t);
 617         initializer->kind         = IR_INITIALIZER_TARVAL;
 618         initializer->tarval.value = tv;
 619
 620         return initializer;
 621 }
 622
 623 ir_initializer_t *create_initializer_compound(size_t n_entries)
 624 {
 625         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 626
 627         size_t i;
 628         size_t size  = sizeof(ir_initializer_compound_t)
 629                      + n_entries * sizeof(ir_initializer_t*)
 630                      - sizeof(ir_initializer_t*);
 631
 632         ir_initializer_t *initializer
 633                 = (ir_initializer_t*)obstack_alloc(obst, size);
 634         initializer->kind                    = IR_INITIALIZER_COMPOUND;
 635         initializer->compound.n_initializers = n_entries;
 636
 637         for (i = 0; i < n_entries; ++i) {
 638                 initializer->compound.initializers[i] = get_initializer_null();
 639         }
 640
 641         return initializer;
 642 }
 643
 644 ir_node *get_initializer_const_value(const ir_initializer_t *initializer)
 645 {
 646         assert(initializer->kind == IR_INITIALIZER_CONST);
 647         return skip_Id(initializer->consti.value);
 648 }
 649
 650 ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initializer)
 651 {
 652         assert(initializer->kind == IR_INITIALIZER_TARVAL);
 653         return initializer->tarval.value;
 654 }
 655
 656 size_t get_initializer_compound_n_entries(const ir_initializer_t *initializer)
 657 {
 658         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 659         return initializer->compound.n_initializers;
 660 }
 661
 662 void set_initializer_compound_value(ir_initializer_t *initializer,
 663                                     size_t index, ir_initializer_t *value)
 664 {
 665         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 666         assert(index < initializer->compound.n_initializers);
 667
 668         initializer->compound.initializers[index] = value;
 669 }
 670
 671 ir_initializer_t *get_initializer_compound_value(
 672                 const ir_initializer_t *initializer, size_t index)
 673 {
 674         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 675         assert(index < initializer->compound.n_initializers);
 676
 677         return initializer->compound.initializers[index];
 678 }
 679
 680 ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer)
 681 {
 682         return initializer->kind;
 683 }
 684
 685 static void check_entity_initializer(ir_entity *entity)
 686 {
 687 #ifndef NDEBUG
 688         ir_initializer_t *initializer = entity->initializer;
 689         ir_type          *entity_tp   = get_entity_type(entity);
 690         switch (initializer->kind) {
 691         case IR_INITIALIZER_COMPOUND:
 692                 assert(is_compound_type(entity_tp) || is_Array_type(entity_tp));
 693                 break;
 694         case IR_INITIALIZER_CONST:
 695                 /* methods are initialized by a SymConst */
 696                 assert(is_atomic_type(entity_tp) || is_Method_type(entity_tp));
 697                 break;
 698         case IR_INITIALIZER_TARVAL:
 699                 assert(is_atomic_type(entity_tp));
 700                 break;
 701         case IR_INITIALIZER_NULL:
 702                 break;
 703         }
 704 #endif
 705 }
 706
 707 void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer)
 708 {
 709         entity->initializer = initializer;
 710         check_entity_initializer(entity);
 711 }
 712
 713 int has_entity_initializer(const ir_entity *entity)
 714 {
 715         return entity->initializer != NULL;
 716 }
 717
 718 ir_initializer_t *get_entity_initializer(const ir_entity *entity)
 719 {
 720         return entity->initializer;
 721 }
 722
 723 int (get_entity_offset)(const ir_entity *ent)
 724 {
 725         return _get_entity_offset(ent);
 726 }
 727
 728 void (set_entity_offset)(ir_entity *ent, int offset)
 729 {
 730         _set_entity_offset(ent, offset);
 731 }
 732
 733 unsigned char (get_entity_offset_bits_remainder)(const ir_entity *ent)
 734 {
 735         return _get_entity_offset_bits_remainder(ent);
 736 }
 737
 738 void (set_entity_offset_bits_remainder)(ir_entity *ent, unsigned char offset)
 739 {
 740         _set_entity_offset_bits_remainder(ent, offset);
 741 }
 742
 743 void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 744 {
 745         if (ent->overwrites == NULL) {
 746                 ent->overwrites = NEW_ARR_F(ir_entity*, 0);
 747         }
 748         ARR_APP1(ir_entity *, ent->overwrites, overwritten);
 749         if (overwritten->overwrittenby == NULL) {
 750                 overwritten->overwrittenby = NEW_ARR_F(ir_entity*, 0);
 751         }
 752         ARR_APP1(ir_entity *, overwritten->overwrittenby, ent);
 753 }
 754
 755 size_t get_entity_n_overwrites(const ir_entity *ent)
 756 {
 757         if (ent->overwrites == NULL)
 758                 return 0;
 759         return ARR_LEN(ent->overwrites);
 760 }
 761
 762 size_t get_entity_overwrites_index(const ir_entity *ent, ir_entity *overwritten)
 763 {
 764         size_t i;
 765         size_t n = get_entity_n_overwrites(ent);
 766         for (i = 0; i < n; ++i) {
 767                 if (get_entity_overwrites(ent, i) == overwritten)
 768                         return i;
 769         }
 770         return (size_t)-1;
 771 }
 772
 773 ir_entity *get_entity_overwrites(const ir_entity *ent, size_t pos)
 774 {
 775         assert(pos < get_entity_n_overwrites(ent));
 776         return ent->overwrites[pos];
 777 }
 778
 779 void set_entity_overwrites(ir_entity *ent, size_t pos, ir_entity *overwritten)
 780 {
 781         assert(pos < get_entity_n_overwrites(ent));
 782         ent->overwrites[pos] = overwritten;
 783 }
 784
 785 void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 786 {
 787         size_t i;
 788         size_t n = get_entity_n_overwrites(ent);
 789         for (i = 0; i < n; ++i) {
 790                 if (ent->overwrites[i] == overwritten) {
 791                         for (; i < n - 1; i++)
 792                                 ent->overwrites[i] = ent->overwrites[i+1];
 793                         ARR_SETLEN(ir_entity*, ent->overwrites, n - 1);
 794                         break;
 795                 }
 796         }
 797 }
 798
 799
 800 size_t get_entity_n_overwrittenby(const ir_entity *ent)
 801 {
 802         if (ent->overwrittenby == NULL)
 803                 return 0;
 804         return ARR_LEN(ent->overwrittenby);
 805 }
 806
 807 size_t get_entity_overwrittenby_index(const ir_entity *ent,
 808                                       ir_entity *overwrites)
 809 {
 810         size_t i;
 811         size_t n = get_entity_n_overwrittenby(ent);
 812         for (i = 0; i < n; ++i) {
 813                 if (get_entity_overwrittenby(ent, i) == overwrites)
 814                         return i;
 815         }
 816         return (size_t)-1;
 817 }
 818
 819 ir_entity *get_entity_overwrittenby(const ir_entity *ent, size_t pos)
 820 {
 821         assert(pos < get_entity_n_overwrittenby(ent));
 822         return ent->overwrittenby[pos];
 823 }
 824
 825 void set_entity_overwrittenby(ir_entity *ent, size_t pos, ir_entity *overwrites)
 826 {
 827         assert(pos < get_entity_n_overwrittenby(ent));
 828         ent->overwrittenby[pos] = overwrites;
 829 }
 830
 831 void remove_entity_overwrittenby(ir_entity *ent, ir_entity *overwrites)
 832 {
 833         size_t i;
 834         size_t n = get_entity_n_overwrittenby(ent);
 835         for (i = 0; i < n; ++i) {
 836                 if (ent->overwrittenby[i] == overwrites) {
 837                         for (; i < n - 1; ++i)
 838                                 ent->overwrittenby[i] = ent->overwrittenby[i+1];
 839                         ARR_SETLEN(ir_entity*, ent->overwrittenby, n - 1);
 840                         break;
 841                 }
 842         }
 843 }
 844
 845 void *(get_entity_link)(const ir_entity *ent)
 846 {
 847         return _get_entity_link(ent);
 848 }
 849
 850 void (set_entity_link)(ir_entity *ent, void *l)
 851 {
 852         _set_entity_link(ent, l);
 853 }
 854
 855 ir_graph *(get_entity_irg)(const ir_entity *ent)
 856 {
 857         return _get_entity_irg(ent);
 858 }
 859
 860 void set_entity_irg(ir_entity *ent, ir_graph *irg)
 861 {
 862         assert(is_method_entity(ent));
 863         assert(get_entity_peculiarity(ent) == peculiarity_existent);
 864         ent->attr.mtd_attr.irg = irg;
 865 }
 866
 867 unsigned get_entity_vtable_number(const ir_entity *ent)
 868 {
 869         assert(is_method_entity((ir_entity *)ent));
 870         return ent->attr.mtd_attr.vtable_number;
 871 }
 872
 873 void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number)
 874 {
 875         assert(is_method_entity(ent));
 876         ent->attr.mtd_attr.vtable_number = vtable_number;
 877 }
 878
 879 int (is_entity)(const void *thing)
 880 {
 881         return _is_entity(thing);
 882 }
 883
 884 int is_atomic_entity(const ir_entity *ent)
 885 {
 886         ir_type *t      = get_entity_type(ent);
 887         const tp_op *op = get_type_tpop(t);
 888         return (op == type_primitive || op == type_pointer ||
 889                 op == type_enumeration || op == type_method);
 890 }
 891
 892 int is_compound_entity(const ir_entity *ent)
 893 {
 894         ir_type     *t  = get_entity_type(ent);
 895         const tp_op *op = get_type_tpop(t);
 896         return (op == type_class || op == type_struct ||
 897                 op == type_array || op == type_union);
 898 }
 899
 900 int is_method_entity(const ir_entity *ent)
 901 {
 902         ir_type *t = get_entity_type(ent);
 903         return is_Method_type(t);
 904 }
 905
 906 ir_visited_t (get_entity_visited)(const ir_entity *ent)
 907 {
 908         return _get_entity_visited(ent);
 909 }
 910
 911 void (set_entity_visited)(ir_entity *ent, ir_visited_t num)
 912 {
 913         _set_entity_visited(ent, num);
 914 }
 915
 916 void (mark_entity_visited)(ir_entity *ent)
 917 {
 918         _mark_entity_visited(ent);
 919 }
 920
 921 int (entity_visited)(const ir_entity *ent)
 922 {
 923         return _entity_visited(ent);
 924 }
 925
 926 int (entity_not_visited)(const ir_entity *ent)
 927 {
 928         return _entity_not_visited(ent);
 929 }
 930
 931 mtp_additional_properties get_entity_additional_properties(const ir_entity *ent)
 932 {
 933         ir_graph *irg;
 934
 935         assert(is_method_entity(ent));
 936
 937         /* first check, if the graph has additional properties */
 938         irg = get_entity_irg(ent);
 939
 940         if (irg)
 941                 return get_irg_additional_properties(irg);
 942
 943         if (ent->attr.mtd_attr.irg_add_properties & mtp_property_inherited)
 944                 return get_method_additional_properties(get_entity_type(ent));
 945
 946         return ent->attr.mtd_attr.irg_add_properties;
 947 }
 948
 949 void set_entity_additional_properties(ir_entity *ent, mtp_additional_properties property_mask)
 950 {
 951         ir_graph *irg;
 952
 953         assert(is_method_entity(ent));
 954
 955         /* first check, if the graph exists */
 956         irg = get_entity_irg(ent);
 957         if (irg)
 958                 set_irg_additional_properties(irg, property_mask);
 959         else {
 960                 /* do not allow to set the mtp_property_inherited flag or
 961                  * the automatic inheritance of flags will not work */
 962                 ent->attr.mtd_attr.irg_add_properties = property_mask & ~mtp_property_inherited;
 963         }
 964 }
 965
 966 void add_entity_additional_properties(ir_entity *ent, mtp_additional_properties properties)
 967 {
 968         ir_graph *irg;
 969
 970         assert(is_method_entity(ent));
 971
 972         /* first check, if the graph exists */
 973         irg = get_entity_irg(ent);
 974         if (irg)
 975                 add_irg_additional_properties(irg, properties);
 976         else {
 977                 mtp_additional_properties mask = ent->attr.mtd_attr.irg_add_properties;
 978
 979                 if (mask & mtp_property_inherited)
 980                         mask = get_method_additional_properties(get_entity_type(ent));
 981
 982                 /* do not allow to set the mtp_property_inherited flag or
 983                  * the automatic inheritance of flags will not work */
 984                 ent->attr.mtd_attr.irg_add_properties = mask | (properties & ~mtp_property_inherited);
 985         }
 986 }
 987
 988 /* Returns the class type that this type info entity represents or NULL
 989    if ent is no type info entity. */
 990 ir_type *(get_entity_repr_class)(const ir_entity *ent)
 991 {
 992         return _get_entity_repr_class(ent);
 993 }
 994
 995 dbg_info *(get_entity_dbg_info)(const ir_entity *ent)
 996 {
 997         return _get_entity_dbg_info(ent);
 998 }
 999
1000 void (set_entity_dbg_info)(ir_entity *ent, dbg_info *db)
1001 {
1002         _set_entity_dbg_info(ent, db);
1003 }
1004
1005 int entity_is_externally_visible(const ir_entity *entity)
1006 {
1007         return get_entity_visibility(entity) != ir_visibility_local
1008                 || (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER);
1009 }
1010
1011 int entity_has_definition(const ir_entity *entity)
1012 {
1013         return entity->initializer != NULL
1014                 || get_entity_irg(entity) != NULL
1015                 || entity_has_compound_ent_values(entity);
1016 }
1017
1018 void ir_init_entity(void)
1019 {
1020         assert(firm_unknown_type && "Call init_type() before firm_init_entity()!");
1021         assert(!unknown_entity && "Call firm_init_entity() only once!");
1022
1023         unknown_entity = new_d_entity(NULL, new_id_from_str(UNKNOWN_ENTITY_NAME),
1024                                       firm_unknown_type, NULL);
1025         set_entity_visibility(unknown_entity, ir_visibility_external);
1026         set_entity_ld_ident(unknown_entity, get_entity_ident(unknown_entity));
1027 }
1028
1029 void ir_finish_entity(void)
1030 {
1031         if (unknown_entity != NULL) {
1032                 free_entity(unknown_entity);
1033                 unknown_entity = NULL;
1034         }
1035 }
1036
1037 ir_allocation get_entity_allocation(const ir_entity *entity)
1038 {
1039         return (ir_allocation)entity->allocation;
1040 }
1041
1042 void set_entity_allocation(ir_entity *entity, ir_allocation allocation)
1043 {
1044         entity->allocation = allocation;
1045 }
1046
1047 ir_peculiarity get_entity_peculiarity(const ir_entity *entity)
1048 {
1049         return (ir_peculiarity)entity->peculiarity;
1050 }
1051
1052 void set_entity_peculiarity(ir_entity *entity, ir_peculiarity peculiarity)
1053 {
1054         entity->peculiarity = peculiarity;
1055 }
1056
1057 void set_entity_final(ir_entity *entity, int final)
1058 {
1059         entity->final = final;
1060 }
1061
1062 int is_entity_final(const ir_entity *entity)
1063 {
1064         return entity->final;
1065 }