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