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 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                 = obstack_alloc(obst, sizeof(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                 = obstack_alloc(obst, sizeof(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 = obstack_alloc(obst, size);
 629         initializer->kind                    = IR_INITIALIZER_COMPOUND;
 630         initializer->compound.n_initializers = n_entries;
 631
 632         for (i = 0; i < n_entries; ++i) {
 633                 initializer->compound.initializers[i] = get_initializer_null();
 634         }
 635
 636         return initializer;
 637 }
 638
 639 ir_node *get_initializer_const_value(const ir_initializer_t *initializer)
 640 {
 641         assert(initializer->kind == IR_INITIALIZER_CONST);
 642         return skip_Id(initializer->consti.value);
 643 }
 644
 645 ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initializer)
 646 {
 647         assert(initializer->kind == IR_INITIALIZER_TARVAL);
 648         return initializer->tarval.value;
 649 }
 650
 651 unsigned get_initializer_compound_n_entries(const ir_initializer_t *initializer)
 652 {
 653         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 654         return initializer->compound.n_initializers;
 655 }
 656
 657 void set_initializer_compound_value(ir_initializer_t *initializer,
 658                                     unsigned index, ir_initializer_t *value)
 659 {
 660         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 661         assert(index < initializer->compound.n_initializers);
 662
 663         initializer->compound.initializers[index] = value;
 664 }
 665
 666 ir_initializer_t *get_initializer_compound_value(
 667                 const ir_initializer_t *initializer, unsigned index)
 668 {
 669         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 670         assert(index < initializer->compound.n_initializers);
 671
 672         return initializer->compound.initializers[index];
 673 }
 674
 675 ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer)
 676 {
 677         return initializer->kind;
 678 }
 679
 680 static void check_entity_initializer(ir_entity *entity)
 681 {
 682 #ifndef NDEBUG
 683         ir_initializer_t *initializer = entity->initializer;
 684         ir_type          *entity_tp   = get_entity_type(entity);
 685         switch (initializer->kind) {
 686         case IR_INITIALIZER_COMPOUND:
 687                 assert(is_compound_type(entity_tp) || is_Array_type(entity_tp));
 688                 break;
 689         case IR_INITIALIZER_CONST:
 690                 /* methods are initialized by a SymConst */
 691                 assert(is_atomic_type(entity_tp) || is_Method_type(entity_tp));
 692                 break;
 693         case IR_INITIALIZER_TARVAL:
 694                 assert(is_atomic_type(entity_tp));
 695                 break;
 696         case IR_INITIALIZER_NULL:
 697                 break;
 698         }
 699 #endif
 700 }
 701
 702 void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer)
 703 {
 704         entity->initializer = initializer;
 705         check_entity_initializer(entity);
 706 }
 707
 708 int has_entity_initializer(const ir_entity *entity)
 709 {
 710         return entity->initializer != NULL;
 711 }
 712
 713 ir_initializer_t *get_entity_initializer(const ir_entity *entity)
 714 {
 715         return entity->initializer;
 716 }
 717
 718 int (get_entity_offset)(const ir_entity *ent)
 719 {
 720         return _get_entity_offset(ent);
 721 }
 722
 723 void (set_entity_offset)(ir_entity *ent, int offset)
 724 {
 725         _set_entity_offset(ent, offset);
 726 }
 727
 728 unsigned char (get_entity_offset_bits_remainder)(const ir_entity *ent)
 729 {
 730         return _get_entity_offset_bits_remainder(ent);
 731 }
 732
 733 void (set_entity_offset_bits_remainder)(ir_entity *ent, unsigned char offset)
 734 {
 735         _set_entity_offset_bits_remainder(ent, offset);
 736 }
 737
 738 void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 739 {
 740         if (ent->overwrites == NULL) {
 741                 ent->overwrites = NEW_ARR_F(ir_entity*, 0);
 742         }
 743         ARR_APP1(ir_entity *, ent->overwrites, overwritten);
 744         if (overwritten->overwrittenby == NULL) {
 745                 overwritten->overwrittenby = NEW_ARR_F(ir_entity*, 0);
 746         }
 747         ARR_APP1(ir_entity *, overwritten->overwrittenby, ent);
 748 }
 749
 750 int get_entity_n_overwrites(const ir_entity *ent)
 751 {
 752         if (ent->overwrites == NULL)
 753                 return 0;
 754         return ARR_LEN(ent->overwrites);
 755 }
 756
 757 int get_entity_overwrites_index(const ir_entity *ent, ir_entity *overwritten)
 758 {
 759         int i, n;
 760         n = get_entity_n_overwrites(ent);
 761         for (i = 0; i < n; ++i) {
 762                 if (get_entity_overwrites(ent, i) == overwritten)
 763                         return i;
 764         }
 765         return -1;
 766 }
 767
 768 ir_entity *get_entity_overwrites(const ir_entity *ent, int pos)
 769 {
 770         assert(pos < get_entity_n_overwrites(ent));
 771         return ent->overwrites[pos];
 772 }
 773
 774 void set_entity_overwrites(ir_entity *ent, int pos, ir_entity *overwritten)
 775 {
 776         assert(pos < get_entity_n_overwrites(ent));
 777         ent->overwrites[pos] = overwritten;
 778 }
 779
 780 void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 781 {
 782         int i, n;
 783         n = get_entity_n_overwrites(ent);
 784         for (i = 0; i < n; ++i) {
 785                 if (ent->overwrites[i] == overwritten) {
 786                         for (; i < n - 1; i++)
 787                                 ent->overwrites[i] = ent->overwrites[i+1];
 788                         ARR_SETLEN(ir_entity*, ent->overwrites, n - 1);
 789                         break;
 790                 }
 791         }
 792 }
 793
 794
 795 int get_entity_n_overwrittenby(const ir_entity *ent)
 796 {
 797         if (ent->overwrittenby == NULL)
 798                 return 0;
 799         return ARR_LEN(ent->overwrittenby);
 800 }
 801
 802 int get_entity_overwrittenby_index(const ir_entity *ent, ir_entity *overwrites)
 803 {
 804         int i, n;
 805         n = get_entity_n_overwrittenby(ent);
 806         for (i = 0; i < n; ++i) {
 807                 if (get_entity_overwrittenby(ent, i) == overwrites)
 808                         return i;
 809         }
 810         return -1;
 811 }
 812
 813 ir_entity *get_entity_overwrittenby(const ir_entity *ent, int pos)
 814 {
 815         assert(pos < get_entity_n_overwrittenby(ent));
 816         return ent->overwrittenby[pos];
 817 }
 818
 819 void set_entity_overwrittenby(ir_entity *ent, int pos, ir_entity *overwrites)
 820 {
 821         assert(pos < get_entity_n_overwrittenby(ent));
 822         ent->overwrittenby[pos] = overwrites;
 823 }
 824
 825 void remove_entity_overwrittenby(ir_entity *ent, ir_entity *overwrites)
 826 {
 827         int i, n;
 828
 829         n = get_entity_n_overwrittenby(ent);
 830         for (i = 0; i < n; ++i) {
 831                 if (ent->overwrittenby[i] == overwrites) {
 832                         for (; i < n - 1; ++i)
 833                                 ent->overwrittenby[i] = ent->overwrittenby[i+1];
 834                         ARR_SETLEN(ir_entity*, ent->overwrittenby, n - 1);
 835                         break;
 836                 }
 837         }
 838 }
 839
 840 void *(get_entity_link)(const ir_entity *ent)
 841 {
 842         return _get_entity_link(ent);
 843 }
 844
 845 void (set_entity_link)(ir_entity *ent, void *l)
 846 {
 847         _set_entity_link(ent, l);
 848 }
 849
 850 ir_graph *(get_entity_irg)(const ir_entity *ent)
 851 {
 852         return _get_entity_irg(ent);
 853 }
 854
 855 void set_entity_irg(ir_entity *ent, ir_graph *irg)
 856 {
 857         assert(is_method_entity(ent));
 858         assert(get_entity_peculiarity(ent) == peculiarity_existent);
 859         ent->attr.mtd_attr.irg = irg;
 860 }
 861
 862 unsigned get_entity_vtable_number(const ir_entity *ent)
 863 {
 864         assert(is_method_entity((ir_entity *)ent));
 865         return ent->attr.mtd_attr.vtable_number;
 866 }
 867
 868 void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number)
 869 {
 870         assert(is_method_entity(ent));
 871         ent->attr.mtd_attr.vtable_number = vtable_number;
 872 }
 873
 874 int (is_entity)(const void *thing)
 875 {
 876         return _is_entity(thing);
 877 }
 878
 879 int is_atomic_entity(const ir_entity *ent)
 880 {
 881         ir_type *t      = get_entity_type(ent);
 882         const tp_op *op = get_type_tpop(t);
 883         return (op == type_primitive || op == type_pointer ||
 884                 op == type_enumeration || op == type_method);
 885 }
 886
 887 int is_compound_entity(const ir_entity *ent)
 888 {
 889         ir_type     *t  = get_entity_type(ent);
 890         const tp_op *op = get_type_tpop(t);
 891         return (op == type_class || op == type_struct ||
 892                 op == type_array || op == type_union);
 893 }
 894
 895 int is_method_entity(const ir_entity *ent)
 896 {
 897         ir_type *t = get_entity_type(ent);
 898         return is_Method_type(t);
 899 }
 900
 901 ir_visited_t (get_entity_visited)(const ir_entity *ent)
 902 {
 903         return _get_entity_visited(ent);
 904 }
 905
 906 void (set_entity_visited)(ir_entity *ent, ir_visited_t num)
 907 {
 908         _set_entity_visited(ent, num);
 909 }
 910
 911 void (mark_entity_visited)(ir_entity *ent)
 912 {
 913         _mark_entity_visited(ent);
 914 }
 915
 916 int (entity_visited)(const ir_entity *ent)
 917 {
 918         return _entity_visited(ent);
 919 }
 920
 921 int (entity_not_visited)(const ir_entity *ent)
 922 {
 923         return _entity_not_visited(ent);
 924 }
 925
 926 unsigned get_entity_additional_properties(const ir_entity *ent)
 927 {
 928         ir_graph *irg;
 929
 930         assert(is_method_entity(ent));
 931
 932         /* first check, if the graph has additional properties */
 933         irg = get_entity_irg(ent);
 934
 935         if (irg)
 936                 return get_irg_additional_properties(irg);
 937
 938         if (ent->attr.mtd_attr.irg_add_properties & mtp_property_inherited)
 939                 return get_method_additional_properties(get_entity_type(ent));
 940
 941         return ent->attr.mtd_attr.irg_add_properties;
 942 }
 943
 944 void set_entity_additional_properties(ir_entity *ent, unsigned property_mask)
 945 {
 946         ir_graph *irg;
 947
 948         assert(is_method_entity(ent));
 949
 950         /* first check, if the graph exists */
 951         irg = get_entity_irg(ent);
 952         if (irg)
 953                 set_irg_additional_properties(irg, property_mask);
 954         else {
 955     /* do not allow to set the mtp_property_inherited flag or
 956                 * the automatic inheritance of flags will not work */
 957                 ent->attr.mtd_attr.irg_add_properties = property_mask & ~mtp_property_inherited;
 958         }
 959 }
 960
 961 void set_entity_additional_property(ir_entity *ent, mtp_additional_property flag)
 962 {
 963         ir_graph *irg;
 964
 965         assert(is_method_entity(ent));
 966
 967         /* first check, if the graph exists */
 968         irg = get_entity_irg(ent);
 969         if (irg)
 970                 set_irg_additional_property(irg, flag);
 971         else {
 972                 unsigned mask = ent->attr.mtd_attr.irg_add_properties;
 973
 974                 if (mask & mtp_property_inherited)
 975                         mask = get_method_additional_properties(get_entity_type(ent));
 976
 977                 /* do not allow to set the mtp_property_inherited flag or
 978                  * the automatic inheritance of flags will not work */
 979                 ent->attr.mtd_attr.irg_add_properties = mask | (flag & ~mtp_property_inherited);
 980         }
 981 }
 982
 983 /* Returns the class type that this type info entity represents or NULL
 984    if ent is no type info entity. */
 985 ir_type *(get_entity_repr_class)(const ir_entity *ent)
 986 {
 987         return _get_entity_repr_class(ent);
 988 }
 989
 990 dbg_info *(get_entity_dbg_info)(const ir_entity *ent)
 991 {
 992         return _get_entity_dbg_info(ent);
 993 }
 994
 995 void (set_entity_dbg_info)(ir_entity *ent, dbg_info *db)
 996 {
 997         _set_entity_dbg_info(ent, db);
 998 }
 999
1000 int entity_is_externally_visible(const ir_entity *entity)
1001 {
1002         return get_entity_visibility(entity) != ir_visibility_local
1003                 || (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER);
1004 }
1005
1006 int entity_has_definition(const ir_entity *entity)
1007 {
1008         return entity->initializer != NULL
1009                 || get_entity_irg(entity) != NULL
1010                 || entity_has_compound_ent_values(entity);
1011 }
1012
1013 void ir_init_entity(void)
1014 {
1015         assert(firm_unknown_type && "Call init_type() before firm_init_entity()!");
1016         assert(!unknown_entity && "Call firm_init_entity() only once!");
1017
1018         unknown_entity = new_d_entity(NULL, new_id_from_str(UNKNOWN_ENTITY_NAME),
1019                                       firm_unknown_type, NULL);
1020         set_entity_visibility(unknown_entity, ir_visibility_external);
1021         set_entity_ld_ident(unknown_entity, get_entity_ident(unknown_entity));
1022 }
1023
1024 void ir_finish_entity(void)
1025 {
1026         if (unknown_entity != NULL) {
1027                 free_entity(unknown_entity);
1028                 unknown_entity = NULL;
1029         }
1030 }
1031
1032 ir_allocation get_entity_allocation(const ir_entity *entity)
1033 {
1034         return entity->allocation;
1035 }
1036
1037 void set_entity_allocation(ir_entity *entity, ir_allocation allocation)
1038 {
1039         entity->allocation = allocation;
1040 }
1041
1042 ir_peculiarity get_entity_peculiarity(const ir_entity *entity)
1043 {
1044         return entity->peculiarity;
1045 }
1046
1047 void set_entity_peculiarity(ir_entity *entity, ir_peculiarity peculiarity)
1048 {
1049         entity->peculiarity = peculiarity;
1050 }
1051
1052 void set_entity_final(ir_entity *entity, int final)
1053 {
1054         entity->final = final;
1055 }
1056
1057 int is_entity_final(const ir_entity *entity)
1058 {
1059         return entity->final;
1060 }