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

   1 /*
   2  * Copyright (C) 1995-2008 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 it's 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         return newe;
 197 }
 198
 199 /*
 200  * Copies the entity if the new_owner is different from the
 201  * owner of the old entity,  else returns the old entity.
 202  */
 203 ir_entity *copy_entity_own(ir_entity *old, ir_type *new_owner)
 204 {
 205         ir_entity *newe;
 206         assert(is_entity(old));
 207         assert(is_compound_type(new_owner));
 208         assert(get_type_state(new_owner) != layout_fixed);
 209
 210         if (old->owner == new_owner)
 211                 return old;
 212
 213         /* create a deep copy so we are safe of aliasing and double-freeing. */
 214         newe        = deep_entity_copy(old);
 215         newe->owner = new_owner;
 216         add_compound_member(new_owner, newe);
 217
 218         return newe;
 219 }
 220
 221 ir_entity *copy_entity_name(ir_entity *old, ident *new_name)
 222 {
 223         ir_entity *newe;
 224         assert(old && old->kind == k_entity);
 225
 226         if (old->name == new_name)
 227                 return old;
 228
 229         newe       = deep_entity_copy(old);
 230         newe->name = new_name;
 231         newe->ld_name = NULL;
 232         add_compound_member(old->owner, newe);
 233
 234         return newe;
 235 }
 236
 237 void free_entity(ir_entity *ent)
 238 {
 239         if (ent->owner != NULL && !is_Array_type(ent->owner))
 240                 remove_compound_member(ent->owner, ent);
 241
 242         assert(ent && ent->kind == k_entity);
 243         free_entity_attrs(ent);
 244         ent->kind = k_BAD;
 245         xfree(ent);
 246 }
 247
 248 /* Outputs a unique number for this node */
 249 long get_entity_nr(const ir_entity *ent)
 250 {
 251         assert(ent && ent->kind == k_entity);
 252 #ifdef DEBUG_libfirm
 253         return ent->nr;
 254 #else
 255         return (long)PTR_TO_INT(ent);
 256 #endif
 257 }
 258
 259 const char *(get_entity_name)(const ir_entity *ent)
 260 {
 261         return _get_entity_name(ent);
 262 }
 263
 264 ident *(get_entity_ident)(const ir_entity *ent)
 265 {
 266         return _get_entity_ident(ent);
 267 }
 268
 269 void (set_entity_ident)(ir_entity *ent, ident *id)
 270 {
 271         _set_entity_ident(ent, id);
 272 }
 273
 274 ir_type *(get_entity_owner)(const ir_entity *ent)
 275 {
 276         return _get_entity_owner(ent);
 277 }
 278
 279 void set_entity_owner(ir_entity *ent, ir_type *owner)
 280 {
 281         assert(is_entity(ent));
 282         assert(is_compound_type(owner));
 283
 284         remove_compound_member(ent->owner, ent);
 285         add_compound_member(owner, ent);
 286         ent->owner = owner;
 287 }
 288
 289 ident *(get_entity_ld_ident)(const ir_entity *ent)
 290 {
 291         return _get_entity_ld_ident(ent);
 292 }
 293
 294 void (set_entity_ld_ident)(ir_entity *ent, ident *ld_ident)
 295 {
 296         _set_entity_ld_ident(ent, ld_ident);
 297 }
 298
 299 const char *(get_entity_ld_name)(const ir_entity *ent)
 300 {
 301         return _get_entity_ld_name(ent);
 302 }
 303
 304 ir_type *(get_entity_type)(const ir_entity *ent)
 305 {
 306         return _get_entity_type(ent);
 307 }
 308
 309 void (set_entity_type)(ir_entity *ent, ir_type *type)
 310 {
 311         _set_entity_type(ent, type);
 312 }
 313
 314 ir_volatility (get_entity_volatility)(const ir_entity *ent)
 315 {
 316         return _get_entity_volatility(ent);
 317 }
 318
 319 void (set_entity_volatility)(ir_entity *ent, ir_volatility vol)
 320 {
 321         _set_entity_volatility(ent, vol);
 322 }
 323
 324 /* Return the name of the volatility. */
 325 const char *get_volatility_name(ir_volatility var)
 326 {
 327 #define X(a)    case a: return #a
 328         switch (var) {
 329         X(volatility_non_volatile);
 330         X(volatility_is_volatile);
 331     default: return "BAD VALUE";
 332         }
 333 #undef X
 334 }
 335
 336 ir_align (get_entity_aligned)(const ir_entity *ent)
 337 {
 338         return _get_entity_aligned(ent);
 339 }
 340
 341 void (set_entity_aligned)(ir_entity *ent, ir_align a)
 342 {
 343         _set_entity_aligned(ent, a);
 344 }
 345
 346 unsigned (get_entity_alignment)(const ir_entity *ent)
 347 {
 348         return _get_entity_alignment(ent);
 349 }
 350
 351 void (set_entity_alignment)(ir_entity *ent, unsigned alignment)
 352 {
 353         _set_entity_alignment(ent, alignment);
 354 }
 355
 356 /* Return the name of the alignment. */
 357 const char *get_align_name(ir_align a)
 358 {
 359 #define X(a)    case a: return #a
 360         switch (a) {
 361         X(align_non_aligned);
 362         X(align_is_aligned);
 363         default: return "BAD VALUE";
 364         }
 365 #undef X
 366 }
 367
 368 void set_entity_label(ir_entity *ent, ir_label_t label)
 369 {
 370         ent->attr.code_attr.label = label;
 371 }
 372
 373 ir_label_t get_entity_label(const ir_entity *ent)
 374 {
 375         return ent->attr.code_attr.label;
 376 }
 377
 378 static void verify_visibility(const ir_entity *entity)
 379 {
 380         if (get_entity_visibility(entity) == ir_visibility_external
 381                         && !is_method_entity(entity)) {
 382                 assert(!entity_has_definition(entity));
 383         }
 384 }
 385
 386 void set_entity_visibility(ir_entity *entity, ir_visibility visibility)
 387 {
 388         entity->visibility = visibility;
 389         verify_visibility(entity);
 390 }
 391
 392 ir_visibility get_entity_visibility(const ir_entity *entity)
 393 {
 394         return (ir_visibility)entity->visibility;
 395 }
 396
 397 void set_entity_linkage(ir_entity *entity, ir_linkage linkage)
 398 {
 399         entity->linkage = linkage;
 400 }
 401
 402 ir_linkage (get_entity_linkage)(const ir_entity *entity)
 403 {
 404         return get_entity_linkage(entity);
 405 }
 406
 407 void add_entity_linkage(ir_entity *entity, ir_linkage linkage)
 408 {
 409         entity->linkage |= linkage;
 410 }
 411
 412 void remove_entity_linkage(ir_entity *entity, ir_linkage linkage)
 413 {
 414         entity->linkage &= ~linkage;
 415 }
 416
 417 /* Checks if an entity is compiler generated */
 418 int (is_entity_compiler_generated)(const ir_entity *ent)
 419 {
 420         return _is_entity_compiler_generated(ent);
 421 }
 422
 423 /* Sets/resets the compiler generated flag */
 424 void (set_entity_compiler_generated)(ir_entity *ent, int flag)
 425 {
 426         _set_entity_compiler_generated(ent, flag);
 427 }
 428
 429 ir_entity_usage (get_entity_usage)(const ir_entity *ent)
 430 {
 431         return _get_entity_usage(ent);
 432 }
 433
 434 void (set_entity_usage)(ir_entity *ent, ir_entity_usage flags)
 435 {
 436         _set_entity_usage(ent, flags);
 437 }
 438
 439 /* Set has no effect for existent entities of type method. */
 440 ir_node *get_atomic_ent_value(ir_entity *entity)
 441 {
 442         ir_initializer_t *initializer = get_entity_initializer(entity);
 443
 444         assert(entity && is_atomic_entity(entity));
 445         if (initializer == NULL) {
 446                 ir_type *type = get_entity_type(entity);
 447                 return new_r_Unknown(get_const_code_irg(), get_type_mode(type));
 448         }
 449
 450         switch (get_initializer_kind(initializer)) {
 451         case IR_INITIALIZER_NULL: {
 452                 ir_type *type = get_entity_type(entity);
 453                 ir_mode *mode = get_type_mode(type);
 454                 return new_r_Const(get_const_code_irg(), get_mode_null(mode));
 455         }
 456         case IR_INITIALIZER_TARVAL: {
 457                 ir_tarval *tv = get_initializer_tarval_value(initializer);
 458                 return new_r_Const(get_const_code_irg(), tv);
 459         }
 460         case IR_INITIALIZER_CONST:
 461                 return get_initializer_const_value(initializer);
 462         case IR_INITIALIZER_COMPOUND:
 463                 panic("compound initializer in atomic entity not allowed (%+F)", entity);
 464         }
 465
 466         panic("invalid initializer kind in get_atomic_ent_value(%+F)", entity);
 467 }
 468
 469 void set_atomic_ent_value(ir_entity *entity, ir_node *val)
 470 {
 471         ir_initializer_t *initializer;
 472
 473         assert(is_atomic_entity(entity));
 474
 475         assert(is_Dummy(val) || get_irn_mode(val) == get_type_mode(entity->type));
 476         initializer = create_initializer_const(val);
 477         entity->initializer = initializer;
 478 }
 479
 480 /* Returns true if the the node is representable as code on
 481  *  const_code_irg. */
 482 int is_irn_const_expression(ir_node *n)
 483 {
 484         ir_mode *m;
 485
 486         /* we are in danger iff an exception will arise. TODO: be more precisely,
 487          * for instance Div. will NOT rise if divisor != 0
 488          */
 489         if (is_binop(n) && !is_fragile_op(n))
 490                 return is_irn_const_expression(get_binop_left(n)) && is_irn_const_expression(get_binop_right(n));
 491
 492         m = get_irn_mode(n);
 493         switch (get_irn_opcode(n)) {
 494         case iro_Const:
 495         case iro_SymConst:
 496         case iro_Unknown:
 497                 return 1;
 498         case iro_Conv:
 499         case iro_Cast:
 500                 return is_irn_const_expression(get_irn_n(n, 0));
 501         default:
 502                 break;
 503         }
 504         return 0;
 505 }
 506
 507 /*
 508  * Copies a firm subgraph that complies to the restrictions for
 509  * constant expressions to block.
 510  */
 511 ir_node *copy_const_value(dbg_info *dbg, ir_node *n, ir_node *block)
 512 {
 513         ir_graph *irg = get_irn_irg(block);
 514         ir_node *nn;
 515         ir_mode *m;
 516
 517         /* @@@ GL I think  we should implement this using the routines from irgopt for
 518                dead node elimination/inlineing. */
 519
 520         m = get_irn_mode(n);
 521         switch (get_irn_opcode(n)) {
 522         case iro_Const:
 523                 nn = new_rd_Const(dbg, irg, get_Const_tarval(n));
 524                 break;
 525         case iro_SymConst:
 526                 nn = new_rd_SymConst(dbg, irg, get_irn_mode(n), get_SymConst_symbol(n), get_SymConst_kind(n));
 527                 break;
 528         case iro_Add:
 529                 nn = new_rd_Add(dbg, block,
 530                                 copy_const_value(dbg, get_Add_left(n), block),
 531                                 copy_const_value(dbg, get_Add_right(n), block), m);
 532                 break;
 533         case iro_Sub:
 534                 nn = new_rd_Sub(dbg, block,
 535                                 copy_const_value(dbg, get_Sub_left(n), block),
 536                                 copy_const_value(dbg, get_Sub_right(n), block), m);
 537                 break;
 538         case iro_Mul:
 539                 nn = new_rd_Mul(dbg, block,
 540                                 copy_const_value(dbg, get_Mul_left(n), block),
 541                                 copy_const_value(dbg, get_Mul_right(n), block), m);
 542                 break;
 543         case iro_And:
 544                 nn = new_rd_And(dbg, block,
 545                                 copy_const_value(dbg, get_And_left(n), block),
 546                                 copy_const_value(dbg, get_And_right(n), block), m);
 547                 break;
 548         case iro_Or:
 549                 nn = new_rd_Or(dbg, block,
 550                                copy_const_value(dbg, get_Or_left(n), block),
 551                                copy_const_value(dbg, get_Or_right(n), block), m);
 552                 break;
 553         case iro_Eor:
 554                 nn = new_rd_Eor(dbg, block,
 555                                 copy_const_value(dbg, get_Eor_left(n), block),
 556                                 copy_const_value(dbg, get_Eor_right(n), block), m);
 557                 break;
 558         case iro_Cast:
 559                 nn = new_rd_Cast(dbg, block,
 560                                  copy_const_value(dbg, get_Cast_op(n), block),
 561                                  get_Cast_type(n));
 562                 break;
 563         case iro_Conv:
 564                 nn = new_rd_Conv(dbg, block,
 565                                  copy_const_value(dbg, get_Conv_op(n), block), m);
 566                 break;
 567         case iro_Unknown:
 568                 nn = new_r_Unknown(irg, m); break;
 569         default:
 570                 panic("opcode invalid or not implemented");
 571         }
 572         return nn;
 573 }
 574
 575 /** Return the name of the initializer kind. */
 576 const char *get_initializer_kind_name(ir_initializer_kind_t ini)
 577 {
 578 #define X(a)    case a: return #a
 579         switch (ini) {
 580         X(IR_INITIALIZER_CONST);
 581         X(IR_INITIALIZER_TARVAL);
 582         X(IR_INITIALIZER_NULL);
 583         X(IR_INITIALIZER_COMPOUND);
 584     default: return "BAD VALUE";
 585         }
 586 #undef X
 587 }
 588
 589 static ir_initializer_t null_initializer = { IR_INITIALIZER_NULL };
 590
 591 ir_initializer_t *get_initializer_null(void)
 592 {
 593         return &null_initializer;
 594 }
 595
 596 ir_initializer_t *create_initializer_const(ir_node *value)
 597 {
 598         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 599
 600         ir_initializer_t *initializer
 601                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_const_t);
 602         initializer->kind         = IR_INITIALIZER_CONST;
 603         initializer->consti.value = value;
 604
 605         return initializer;
 606 }
 607
 608 ir_initializer_t *create_initializer_tarval(ir_tarval *tv)
 609 {
 610         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 611
 612         ir_initializer_t *initializer
 613                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_tarval_t);
 614         initializer->kind         = IR_INITIALIZER_TARVAL;
 615         initializer->tarval.value = tv;
 616
 617         return initializer;
 618 }
 619
 620 ir_initializer_t *create_initializer_compound(unsigned n_entries)
 621 {
 622         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 623
 624         size_t i;
 625         size_t size  = sizeof(ir_initializer_compound_t)
 626                      + (n_entries-1) * sizeof(ir_initializer_t*);
 627
 628         ir_initializer_t *initializer
 629                 = (ir_initializer_t*)obstack_alloc(obst, size);
 630         initializer->kind                    = IR_INITIALIZER_COMPOUND;
 631         initializer->compound.n_initializers = n_entries;
 632
 633         for (i = 0; i < n_entries; ++i) {
 634                 initializer->compound.initializers[i] = get_initializer_null();
 635         }
 636
 637         return initializer;
 638 }
 639
 640 ir_node *get_initializer_const_value(const ir_initializer_t *initializer)
 641 {
 642         assert(initializer->kind == IR_INITIALIZER_CONST);
 643         return skip_Id(initializer->consti.value);
 644 }
 645
 646 ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initializer)
 647 {
 648         assert(initializer->kind == IR_INITIALIZER_TARVAL);
 649         return initializer->tarval.value;
 650 }
 651
 652 unsigned get_initializer_compound_n_entries(const ir_initializer_t *initializer)
 653 {
 654         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 655         return initializer->compound.n_initializers;
 656 }
 657
 658 void set_initializer_compound_value(ir_initializer_t *initializer,
 659                                     unsigned index, ir_initializer_t *value)
 660 {
 661         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 662         assert(index < initializer->compound.n_initializers);
 663
 664         initializer->compound.initializers[index] = value;
 665 }
 666
 667 ir_initializer_t *get_initializer_compound_value(
 668                 const ir_initializer_t *initializer, unsigned index)
 669 {
 670         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 671         assert(index < initializer->compound.n_initializers);
 672
 673         return initializer->compound.initializers[index];
 674 }
 675
 676 ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer)
 677 {
 678         return initializer->kind;
 679 }
 680
 681 static void check_entity_initializer(ir_entity *entity)
 682 {
 683 #ifndef NDEBUG
 684         ir_initializer_t *initializer = entity->initializer;
 685         ir_type          *entity_tp   = get_entity_type(entity);
 686         switch (initializer->kind) {
 687         case IR_INITIALIZER_COMPOUND:
 688                 assert(is_compound_type(entity_tp) || is_Array_type(entity_tp));
 689                 break;
 690         case IR_INITIALIZER_CONST:
 691                 /* methods are initialized by a SymConst */
 692                 assert(is_atomic_type(entity_tp) || is_Method_type(entity_tp));
 693                 break;
 694         case IR_INITIALIZER_TARVAL:
 695                 assert(is_atomic_type(entity_tp));
 696                 break;
 697         case IR_INITIALIZER_NULL:
 698                 break;
 699         }
 700 #endif
 701 }
 702
 703 void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer)
 704 {
 705         entity->initializer = initializer;
 706         check_entity_initializer(entity);
 707 }
 708
 709 int has_entity_initializer(const ir_entity *entity)
 710 {
 711         return entity->initializer != NULL;
 712 }
 713
 714 ir_initializer_t *get_entity_initializer(const ir_entity *entity)
 715 {
 716         return entity->initializer;
 717 }
 718
 719 int (get_entity_offset)(const ir_entity *ent)
 720 {
 721         return _get_entity_offset(ent);
 722 }
 723
 724 void (set_entity_offset)(ir_entity *ent, int offset)
 725 {
 726         _set_entity_offset(ent, offset);
 727 }
 728
 729 unsigned char (get_entity_offset_bits_remainder)(const ir_entity *ent)
 730 {
 731         return _get_entity_offset_bits_remainder(ent);
 732 }
 733
 734 void (set_entity_offset_bits_remainder)(ir_entity *ent, unsigned char offset)
 735 {
 736         _set_entity_offset_bits_remainder(ent, offset);
 737 }
 738
 739 void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 740 {
 741         if (ent->overwrites == NULL) {
 742                 ent->overwrites = NEW_ARR_F(ir_entity*, 0);
 743         }
 744         ARR_APP1(ir_entity *, ent->overwrites, overwritten);
 745         if (overwritten->overwrittenby == NULL) {
 746                 overwritten->overwrittenby = NEW_ARR_F(ir_entity*, 0);
 747         }
 748         ARR_APP1(ir_entity *, overwritten->overwrittenby, ent);
 749 }
 750
 751 int get_entity_n_overwrites(const ir_entity *ent)
 752 {
 753         if (ent->overwrites == NULL)
 754                 return 0;
 755         return ARR_LEN(ent->overwrites);
 756 }
 757
 758 int get_entity_overwrites_index(const ir_entity *ent, ir_entity *overwritten)
 759 {
 760         int i, n;
 761         n = get_entity_n_overwrites(ent);
 762         for (i = 0; i < n; ++i) {
 763                 if (get_entity_overwrites(ent, i) == overwritten)
 764                         return i;
 765         }
 766         return -1;
 767 }
 768
 769 ir_entity *get_entity_overwrites(const ir_entity *ent, int pos)
 770 {
 771         assert(pos < get_entity_n_overwrites(ent));
 772         return ent->overwrites[pos];
 773 }
 774
 775 void set_entity_overwrites(ir_entity *ent, int pos, ir_entity *overwritten)
 776 {
 777         assert(pos < get_entity_n_overwrites(ent));
 778         ent->overwrites[pos] = overwritten;
 779 }
 780
 781 void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 782 {
 783         int i, n;
 784         n = get_entity_n_overwrites(ent);
 785         for (i = 0; i < n; ++i) {
 786                 if (ent->overwrites[i] == overwritten) {
 787                         for (; i < n - 1; i++)
 788                                 ent->overwrites[i] = ent->overwrites[i+1];
 789                         ARR_SETLEN(ir_entity*, ent->overwrites, n - 1);
 790                         break;
 791                 }
 792         }
 793 }
 794
 795
 796 int get_entity_n_overwrittenby(const ir_entity *ent)
 797 {
 798         if (ent->overwrittenby == NULL)
 799                 return 0;
 800         return ARR_LEN(ent->overwrittenby);
 801 }
 802
 803 int get_entity_overwrittenby_index(const ir_entity *ent, ir_entity *overwrites)
 804 {
 805         int i, n;
 806         n = get_entity_n_overwrittenby(ent);
 807         for (i = 0; i < n; ++i) {
 808                 if (get_entity_overwrittenby(ent, i) == overwrites)
 809                         return i;
 810         }
 811         return -1;
 812 }
 813
 814 ir_entity *get_entity_overwrittenby(const ir_entity *ent, int pos)
 815 {
 816         assert(pos < get_entity_n_overwrittenby(ent));
 817         return ent->overwrittenby[pos];
 818 }
 819
 820 void set_entity_overwrittenby(ir_entity *ent, int pos, ir_entity *overwrites)
 821 {
 822         assert(pos < get_entity_n_overwrittenby(ent));
 823         ent->overwrittenby[pos] = overwrites;
 824 }
 825
 826 void remove_entity_overwrittenby(ir_entity *ent, ir_entity *overwrites)
 827 {
 828         int i, n;
 829
 830         n = get_entity_n_overwrittenby(ent);
 831         for (i = 0; i < n; ++i) {
 832                 if (ent->overwrittenby[i] == overwrites) {
 833                         for (; i < n - 1; ++i)
 834                                 ent->overwrittenby[i] = ent->overwrittenby[i+1];
 835                         ARR_SETLEN(ir_entity*, ent->overwrittenby, n - 1);
 836                         break;
 837                 }
 838         }
 839 }
 840
 841 void *(get_entity_link)(const ir_entity *ent)
 842 {
 843         return _get_entity_link(ent);
 844 }
 845
 846 void (set_entity_link)(ir_entity *ent, void *l)
 847 {
 848         _set_entity_link(ent, l);
 849 }
 850
 851 ir_graph *(get_entity_irg)(const ir_entity *ent)
 852 {
 853         return _get_entity_irg(ent);
 854 }
 855
 856 void set_entity_irg(ir_entity *ent, ir_graph *irg)
 857 {
 858         assert(is_method_entity(ent));
 859         assert(get_entity_peculiarity(ent) == peculiarity_existent);
 860         ent->attr.mtd_attr.irg = irg;
 861 }
 862
 863 unsigned get_entity_vtable_number(const ir_entity *ent)
 864 {
 865         assert(is_method_entity((ir_entity *)ent));
 866         return ent->attr.mtd_attr.vtable_number;
 867 }
 868
 869 void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number)
 870 {
 871         assert(is_method_entity(ent));
 872         ent->attr.mtd_attr.vtable_number = vtable_number;
 873 }
 874
 875 int (is_entity)(const void *thing)
 876 {
 877         return _is_entity(thing);
 878 }
 879
 880 int is_atomic_entity(const ir_entity *ent)
 881 {
 882         ir_type *t      = get_entity_type(ent);
 883         const tp_op *op = get_type_tpop(t);
 884         return (op == type_primitive || op == type_pointer ||
 885                 op == type_enumeration || op == type_method);
 886 }
 887
 888 int is_compound_entity(const ir_entity *ent)
 889 {
 890         ir_type     *t  = get_entity_type(ent);
 891         const tp_op *op = get_type_tpop(t);
 892         return (op == type_class || op == type_struct ||
 893                 op == type_array || op == type_union);
 894 }
 895
 896 int is_method_entity(const ir_entity *ent)
 897 {
 898         ir_type *t = get_entity_type(ent);
 899         return is_Method_type(t);
 900 }
 901
 902 ir_visited_t (get_entity_visited)(const ir_entity *ent)
 903 {
 904         return _get_entity_visited(ent);
 905 }
 906
 907 void (set_entity_visited)(ir_entity *ent, ir_visited_t num)
 908 {
 909         _set_entity_visited(ent, num);
 910 }
 911
 912 void (mark_entity_visited)(ir_entity *ent)
 913 {
 914         _mark_entity_visited(ent);
 915 }
 916
 917 int (entity_visited)(const ir_entity *ent)
 918 {
 919         return _entity_visited(ent);
 920 }
 921
 922 int (entity_not_visited)(const ir_entity *ent)
 923 {
 924         return _entity_not_visited(ent);
 925 }
 926
 927 mtp_additional_properties get_entity_additional_properties(const ir_entity *ent)
 928 {
 929         ir_graph *irg;
 930
 931         assert(is_method_entity(ent));
 932
 933         /* first check, if the graph has additional properties */
 934         irg = get_entity_irg(ent);
 935
 936         if (irg)
 937                 return get_irg_additional_properties(irg);
 938
 939         if (ent->attr.mtd_attr.irg_add_properties & mtp_property_inherited)
 940                 return get_method_additional_properties(get_entity_type(ent));
 941
 942         return ent->attr.mtd_attr.irg_add_properties;
 943 }
 944
 945 void set_entity_additional_properties(ir_entity *ent, mtp_additional_properties property_mask)
 946 {
 947         ir_graph *irg;
 948
 949         assert(is_method_entity(ent));
 950
 951         /* first check, if the graph exists */
 952         irg = get_entity_irg(ent);
 953         if (irg)
 954                 set_irg_additional_properties(irg, property_mask);
 955         else {
 956                 /* do not allow to set the mtp_property_inherited flag or
 957                  * the automatic inheritance of flags will not work */
 958                 ent->attr.mtd_attr.irg_add_properties = property_mask & ~mtp_property_inherited;
 959         }
 960 }
 961
 962 void add_entity_additional_properties(ir_entity *ent, mtp_additional_properties properties)
 963 {
 964         ir_graph *irg;
 965
 966         assert(is_method_entity(ent));
 967
 968         /* first check, if the graph exists */
 969         irg = get_entity_irg(ent);
 970         if (irg)
 971                 add_irg_additional_properties(irg, properties);
 972         else {
 973                 mtp_additional_properties mask = ent->attr.mtd_attr.irg_add_properties;
 974
 975                 if (mask & mtp_property_inherited)
 976                         mask = get_method_additional_properties(get_entity_type(ent));
 977
 978                 /* do not allow to set the mtp_property_inherited flag or
 979                  * the automatic inheritance of flags will not work */
 980                 ent->attr.mtd_attr.irg_add_properties = mask | (properties & ~mtp_property_inherited);
 981         }
 982 }
 983
 984 /* Returns the class type that this type info entity represents or NULL
 985    if ent is no type info entity. */
 986 ir_type *(get_entity_repr_class)(const ir_entity *ent)
 987 {
 988         return _get_entity_repr_class(ent);
 989 }
 990
 991 dbg_info *(get_entity_dbg_info)(const ir_entity *ent)
 992 {
 993         return _get_entity_dbg_info(ent);
 994 }
 995
 996 void (set_entity_dbg_info)(ir_entity *ent, dbg_info *db)
 997 {
 998         _set_entity_dbg_info(ent, db);
 999 }
1000
1001 int entity_is_externally_visible(const ir_entity *entity)
1002 {
1003         return get_entity_visibility(entity) != ir_visibility_local
1004                 || (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER);
1005 }
1006
1007 int entity_has_definition(const ir_entity *entity)
1008 {
1009         return entity->initializer != NULL
1010                 || get_entity_irg(entity) != NULL
1011                 || entity_has_compound_ent_values(entity);
1012 }
1013
1014 void ir_init_entity(void)
1015 {
1016         assert(firm_unknown_type && "Call init_type() before firm_init_entity()!");
1017         assert(!unknown_entity && "Call firm_init_entity() only once!");
1018
1019         unknown_entity = new_d_entity(NULL, new_id_from_str(UNKNOWN_ENTITY_NAME),
1020                                       firm_unknown_type, NULL);
1021         set_entity_visibility(unknown_entity, ir_visibility_external);
1022         set_entity_ld_ident(unknown_entity, get_entity_ident(unknown_entity));
1023 }
1024
1025 void ir_finish_entity(void)
1026 {
1027         if (unknown_entity != NULL) {
1028                 free_entity(unknown_entity);
1029                 unknown_entity = NULL;
1030         }
1031 }
1032
1033 ir_allocation get_entity_allocation(const ir_entity *entity)
1034 {
1035         return (ir_allocation)entity->allocation;
1036 }
1037
1038 void set_entity_allocation(ir_entity *entity, ir_allocation allocation)
1039 {
1040         entity->allocation = allocation;
1041 }
1042
1043 ir_peculiarity get_entity_peculiarity(const ir_entity *entity)
1044 {
1045         return (ir_peculiarity)entity->peculiarity;
1046 }
1047
1048 void set_entity_peculiarity(ir_entity *entity, ir_peculiarity peculiarity)
1049 {
1050         entity->peculiarity = peculiarity;
1051 }
1052
1053 void set_entity_final(ir_entity *entity, int final)
1054 {
1055         entity->final = final;
1056 }
1057
1058 int is_entity_final(const ir_entity *entity)
1059 {
1060         return entity->final;
1061 }