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

   1 /*
   2  * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Representation of all program known entities.
  23  * @author  Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Michael Beck
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <stddef.h>
  31
  32 #include "xmalloc.h"
  33 #include "entity_t.h"
  34 #include "array.h"
  35 #include "irtools.h"
  36 #include "irhooks.h"
  37 #include "irprintf.h"
  38
  39 #include "irprog_t.h"
  40 #include "ircons.h"
  41 #include "tv_t.h"
  42 #include "irdump.h"
  43 #include "irgraph_t.h"
  44 #include "callgraph.h"
  45 #include "error.h"
  46 #include "compound_path.h"
  47
  48 /*-----------------------------------------------------------------*/
  49 /** general                                                       **/
  50 /*-----------------------------------------------------------------*/
  51
  52 ir_entity *unknown_entity = NULL;
  53
  54 ir_entity *get_unknown_entity(void) { return unknown_entity; }
  55
  56 /** The name of the unknown entity. */
  57 #define UNKNOWN_ENTITY_NAME "unknown_entity"
  58
  59 /*-----------------------------------------------------------------*/
  60 /* ENTITY                                                          */
  61 /*-----------------------------------------------------------------*/
  62
  63 static ir_entity *intern_new_entity(ir_type *owner, ident *name, ir_type *type,
  64                                     dbg_info *dbgi)
  65 {
  66         ir_entity *res;
  67
  68         res = XMALLOCZ(ir_entity);
  69
  70         res->kind    = k_entity;
  71         res->name    = name;
  72         res->ld_name = NULL;
  73         res->type    = type;
  74         res->owner   = owner;
  75
  76         res->volatility           = volatility_non_volatile;
  77         res->aligned              = align_is_aligned;
  78         res->usage                = ir_usage_unknown;
  79         res->compiler_gen         = 0;
  80         res->visibility           = ir_visibility_default;
  81         res->offset               = -1;
  82         res->offset_bit_remainder = 0;
  83         res->alignment            = 0;
  84         res->link                 = NULL;
  85         res->repr_class           = NULL;
  86 #ifdef DEBUG_libfirm
  87         res->nr = get_irp_new_node_nr();
  88 #endif
  89
  90         /* Remember entity in its owner. */
  91         if (owner != NULL)
  92                 add_compound_member(owner, res);
  93
  94         res->visit = 0;
  95         set_entity_dbg_info(res, dbgi);
  96
  97         return res;
  98 }
  99
 100 ir_entity *new_d_entity(ir_type *owner, ident *name, ir_type *type,
 101                         dbg_info *db)
 102 {
 103         ir_entity *res = intern_new_entity(owner, name, type, db);
 104
 105         if (is_Method_type(type)) {
 106                 ir_graph *irg = get_const_code_irg();
 107                 symconst_symbol sym;
 108                 ir_mode *mode = is_Method_type(type) ? mode_P_code : mode_P_data;
 109                 sym.entity_p            = res;
 110                 set_atomic_ent_value(res, new_r_SymConst(irg, mode, sym, symconst_addr_ent));
 111                 res->linkage            = IR_LINKAGE_CONSTANT;
 112                 res->attr.mtd_attr.irg_add_properties = mtp_property_inherited;
 113                 res->attr.mtd_attr.vtable_number      = IR_VTABLE_NUM_NOT_SET;
 114                 res->attr.mtd_attr.param_access       = NULL;
 115                 res->attr.mtd_attr.param_weight       = NULL;
 116                 res->attr.mtd_attr.irg                = NULL;
 117         } else if (is_compound_type(type)) {
 118                 res->attr.cmpd_attr.values    = NULL;
 119                 res->attr.cmpd_attr.val_paths = NULL;
 120         } else if (is_code_type(type)) {
 121                 res->attr.code_attr.label = (ir_label_t) -1;
 122         }
 123
 124         hook_new_entity(res);
 125         return res;
 126 }
 127
 128 ir_entity *new_entity(ir_type *owner, ident *name, ir_type *type)
 129 {
 130         return new_d_entity(owner, name, type, NULL);
 131 }
 132
 133 static ident *make_parameter_entity_name(size_t pos)
 134 {
 135         char buf[64];
 136         snprintf(buf, sizeof(buf), "parameter.%lu", (unsigned long) pos);
 137         return new_id_from_str(buf);
 138 }
 139
 140 ir_entity *new_d_parameter_entity(ir_type *owner, size_t pos, ir_type *type,
 141                                   dbg_info *dbgi)
 142 {
 143         ident     *name            = make_parameter_entity_name(pos);
 144         ir_entity *res             = intern_new_entity(owner, name, type, dbgi);
 145         res->is_parameter          = true;
 146         res->attr.parameter.number = pos;
 147         hook_new_entity(res);
 148         return res;
 149 }
 150
 151 ir_entity *new_parameter_entity(ir_type *owner, size_t pos, ir_type *type)
 152 {
 153         return new_d_parameter_entity(owner, pos, type, NULL);
 154 }
 155
 156 /**
 157  * Free entity attributes.
 158  *
 159  * @param ent  the entity
 160  */
 161 static void free_entity_attrs(ir_entity *ent)
 162 {
 163         if (ent->overwrites != NULL) {
 164                 DEL_ARR_F(ent->overwrites);
 165                 ent->overwrites = NULL;
 166         }
 167         if (ent->overwrittenby != NULL) {
 168                 DEL_ARR_F(ent->overwrittenby);
 169                 ent->overwrittenby = NULL;
 170         }
 171
 172         if (ent->initializer != NULL) {
 173                 /* TODO: free initializers */
 174         } else if (entity_has_compound_ent_values(ent)) {
 175                 /* can't free compound graph path as it might be used
 176                  * multiple times */
 177                 ent->attr.cmpd_attr.val_paths = NULL;
 178         }
 179         if (is_compound_entity(ent)) {
 180                 ent->attr.cmpd_attr.values = NULL;
 181         } else if (is_method_entity(ent)) {
 182                 if (ent->attr.mtd_attr.param_access) {
 183                         DEL_ARR_F(ent->attr.mtd_attr.param_access);
 184                         ent->attr.mtd_attr.param_access = NULL;
 185                 }
 186                 if (ent->attr.mtd_attr.param_weight) {
 187                         DEL_ARR_F(ent->attr.mtd_attr.param_weight);
 188                         ent->attr.mtd_attr.param_weight = NULL;
 189                 }
 190         }
 191 }
 192
 193 /**
 194  * Creates a deep copy of an entity.
 195  */
 196 static ir_entity *deep_entity_copy(ir_entity *old)
 197 {
 198         ir_entity *newe = XMALLOC(ir_entity);
 199
 200         *newe = *old;
 201         if (old->initializer != NULL) {
 202                 /* FIXME: the initializers are NOT copied */
 203         } else if (entity_has_compound_ent_values(old)) {
 204                 newe->attr.cmpd_attr.values    = NULL;
 205                 newe->attr.cmpd_attr.val_paths = NULL;
 206                 if (old->attr.cmpd_attr.values)
 207                         newe->attr.cmpd_attr.values = DUP_ARR_F(ir_node *, old->attr.cmpd_attr.values);
 208
 209                 /* FIXME: the compound graph paths are NOT copied */
 210                 if (old->attr.cmpd_attr.val_paths)
 211                         newe->attr.cmpd_attr.val_paths = DUP_ARR_F(compound_graph_path *, old->attr.cmpd_attr.val_paths);
 212         } else if (is_method_entity(old)) {
 213                 /* do NOT copy them, reanalyze. This might be the best solution */
 214                 newe->attr.mtd_attr.param_access = NULL;
 215                 newe->attr.mtd_attr.param_weight = NULL;
 216         }
 217         newe->overwrites    = NULL;
 218         newe->overwrittenby = NULL;
 219
 220 #ifdef DEBUG_libfirm
 221         newe->nr = get_irp_new_node_nr();
 222 #endif
 223         hook_new_entity(newe);
 224         return newe;
 225 }
 226
 227 /*
 228  * Copies the entity if the new_owner is different from the
 229  * owner of the old entity,  else returns the old entity.
 230  */
 231 ir_entity *copy_entity_own(ir_entity *old, ir_type *new_owner)
 232 {
 233         ir_entity *newe;
 234         assert(is_entity(old));
 235         assert(is_compound_type(new_owner));
 236         assert(get_type_state(new_owner) != layout_fixed);
 237
 238         if (old->owner == new_owner)
 239                 return old;
 240
 241         /* create a deep copy so we are safe of aliasing and double-freeing. */
 242         newe        = deep_entity_copy(old);
 243         newe->owner = new_owner;
 244         add_compound_member(new_owner, newe);
 245
 246         return newe;
 247 }
 248
 249 ir_entity *copy_entity_name(ir_entity *old, ident *new_name)
 250 {
 251         ir_entity *newe;
 252         assert(old && old->kind == k_entity);
 253
 254         if (old->name == new_name)
 255                 return old;
 256
 257         newe       = deep_entity_copy(old);
 258         newe->name = new_name;
 259         newe->ld_name = NULL;
 260         add_compound_member(old->owner, newe);
 261
 262         return newe;
 263 }
 264
 265 void free_entity(ir_entity *ent)
 266 {
 267         if (ent->owner != NULL && !is_Array_type(ent->owner))
 268                 remove_compound_member(ent->owner, ent);
 269
 270         assert(ent && ent->kind == k_entity);
 271         free_entity_attrs(ent);
 272         ent->kind = k_BAD;
 273         xfree(ent);
 274 }
 275
 276 /* Outputs a unique number for this node */
 277 long get_entity_nr(const ir_entity *ent)
 278 {
 279         assert(ent && ent->kind == k_entity);
 280 #ifdef DEBUG_libfirm
 281         return ent->nr;
 282 #else
 283         return (long)PTR_TO_INT(ent);
 284 #endif
 285 }
 286
 287 const char *(get_entity_name)(const ir_entity *ent)
 288 {
 289         return _get_entity_name(ent);
 290 }
 291
 292 ident *(get_entity_ident)(const ir_entity *ent)
 293 {
 294         return _get_entity_ident(ent);
 295 }
 296
 297 void (set_entity_ident)(ir_entity *ent, ident *id)
 298 {
 299         _set_entity_ident(ent, id);
 300 }
 301
 302 ir_type *(get_entity_owner)(const ir_entity *ent)
 303 {
 304         return _get_entity_owner(ent);
 305 }
 306
 307 void set_entity_owner(ir_entity *ent, ir_type *owner)
 308 {
 309         assert(is_entity(ent));
 310         assert(is_compound_type(owner));
 311
 312         remove_compound_member(ent->owner, ent);
 313         add_compound_member(owner, ent);
 314         ent->owner = owner;
 315 }
 316
 317 ident *(get_entity_ld_ident)(const ir_entity *ent)
 318 {
 319         return _get_entity_ld_ident(ent);
 320 }
 321
 322 void (set_entity_ld_ident)(ir_entity *ent, ident *ld_ident)
 323 {
 324         _set_entity_ld_ident(ent, ld_ident);
 325 }
 326
 327 const char *(get_entity_ld_name)(const ir_entity *ent)
 328 {
 329         return _get_entity_ld_name(ent);
 330 }
 331
 332 int entity_has_ld_ident(const ir_entity *entity)
 333 {
 334         return entity->ld_name != NULL;
 335 }
 336
 337 ir_type *(get_entity_type)(const ir_entity *ent)
 338 {
 339         return _get_entity_type(ent);
 340 }
 341
 342 void (set_entity_type)(ir_entity *ent, ir_type *type)
 343 {
 344         _set_entity_type(ent, type);
 345 }
 346
 347 ir_volatility (get_entity_volatility)(const ir_entity *ent)
 348 {
 349         return _get_entity_volatility(ent);
 350 }
 351
 352 void (set_entity_volatility)(ir_entity *ent, ir_volatility vol)
 353 {
 354         _set_entity_volatility(ent, vol);
 355 }
 356
 357 /* Return the name of the volatility. */
 358 const char *get_volatility_name(ir_volatility var)
 359 {
 360 #define X(a)    case a: return #a
 361         switch (var) {
 362         X(volatility_non_volatile);
 363         X(volatility_is_volatile);
 364     default: return "BAD VALUE";
 365         }
 366 #undef X
 367 }
 368
 369 ir_align (get_entity_aligned)(const ir_entity *ent)
 370 {
 371         return _get_entity_aligned(ent);
 372 }
 373
 374 void (set_entity_aligned)(ir_entity *ent, ir_align a)
 375 {
 376         _set_entity_aligned(ent, a);
 377 }
 378
 379 unsigned (get_entity_alignment)(const ir_entity *ent)
 380 {
 381         return _get_entity_alignment(ent);
 382 }
 383
 384 void (set_entity_alignment)(ir_entity *ent, unsigned alignment)
 385 {
 386         _set_entity_alignment(ent, alignment);
 387 }
 388
 389 /* Return the name of the alignment. */
 390 const char *get_align_name(ir_align a)
 391 {
 392 #define X(a)    case a: return #a
 393         switch (a) {
 394         X(align_non_aligned);
 395         X(align_is_aligned);
 396         default: return "BAD VALUE";
 397         }
 398 #undef X
 399 }
 400
 401 void set_entity_label(ir_entity *ent, ir_label_t label)
 402 {
 403         ent->attr.code_attr.label = label;
 404 }
 405
 406 ir_label_t get_entity_label(const ir_entity *ent)
 407 {
 408         return ent->attr.code_attr.label;
 409 }
 410
 411 static void verify_visibility(const ir_entity *entity)
 412 {
 413         if (get_entity_visibility(entity) == ir_visibility_external
 414                         && !is_method_entity(entity)) {
 415                 assert(!entity_has_definition(entity));
 416         }
 417 }
 418
 419 void set_entity_visibility(ir_entity *entity, ir_visibility visibility)
 420 {
 421         entity->visibility = visibility;
 422         verify_visibility(entity);
 423 }
 424
 425 ir_visibility get_entity_visibility(const ir_entity *entity)
 426 {
 427         return (ir_visibility)entity->visibility;
 428 }
 429
 430 void set_entity_linkage(ir_entity *entity, ir_linkage linkage)
 431 {
 432         entity->linkage = linkage;
 433 }
 434
 435 ir_linkage (get_entity_linkage)(const ir_entity *entity)
 436 {
 437         return get_entity_linkage(entity);
 438 }
 439
 440 void add_entity_linkage(ir_entity *entity, ir_linkage linkage)
 441 {
 442         entity->linkage |= linkage;
 443 }
 444
 445 void remove_entity_linkage(ir_entity *entity, ir_linkage linkage)
 446 {
 447         entity->linkage &= ~linkage;
 448 }
 449
 450 /* Checks if an entity is compiler generated */
 451 int (is_entity_compiler_generated)(const ir_entity *ent)
 452 {
 453         return _is_entity_compiler_generated(ent);
 454 }
 455
 456 /* Sets/resets the compiler generated flag */
 457 void (set_entity_compiler_generated)(ir_entity *ent, int flag)
 458 {
 459         _set_entity_compiler_generated(ent, flag);
 460 }
 461
 462 ir_entity_usage (get_entity_usage)(const ir_entity *ent)
 463 {
 464         return _get_entity_usage(ent);
 465 }
 466
 467 void (set_entity_usage)(ir_entity *ent, ir_entity_usage flags)
 468 {
 469         _set_entity_usage(ent, flags);
 470 }
 471
 472 /* Set has no effect for existent entities of type method. */
 473 ir_node *get_atomic_ent_value(ir_entity *entity)
 474 {
 475         ir_initializer_t *initializer = get_entity_initializer(entity);
 476
 477         assert(entity && is_atomic_entity(entity));
 478         if (initializer == NULL) {
 479                 ir_type *type = get_entity_type(entity);
 480                 return new_r_Unknown(get_const_code_irg(), get_type_mode(type));
 481         }
 482
 483         switch (get_initializer_kind(initializer)) {
 484         case IR_INITIALIZER_NULL: {
 485                 ir_type *type = get_entity_type(entity);
 486                 ir_mode *mode = get_type_mode(type);
 487                 return new_r_Const(get_const_code_irg(), get_mode_null(mode));
 488         }
 489         case IR_INITIALIZER_TARVAL: {
 490                 ir_tarval *tv = get_initializer_tarval_value(initializer);
 491                 return new_r_Const(get_const_code_irg(), tv);
 492         }
 493         case IR_INITIALIZER_CONST:
 494                 return get_initializer_const_value(initializer);
 495         case IR_INITIALIZER_COMPOUND:
 496                 panic("compound initializer in atomic entity not allowed (%+F)", entity);
 497         }
 498
 499         panic("invalid initializer kind in get_atomic_ent_value(%+F)", entity);
 500 }
 501
 502 void set_atomic_ent_value(ir_entity *entity, ir_node *val)
 503 {
 504         ir_initializer_t *initializer;
 505
 506         assert(is_atomic_entity(entity));
 507
 508         assert(is_Dummy(val) || get_irn_mode(val) == get_type_mode(entity->type));
 509         initializer = create_initializer_const(val);
 510         entity->initializer = initializer;
 511 }
 512
 513 /* Returns true if the the node is representable as code on
 514  *  const_code_irg. */
 515 int is_irn_const_expression(ir_node *n)
 516 {
 517         /* we are in danger iff an exception will arise. TODO: be more precisely,
 518          * for instance Div. will NOT rise if divisor != 0
 519          */
 520         if (is_binop(n) && !is_fragile_op(n))
 521                 return is_irn_const_expression(get_binop_left(n)) && is_irn_const_expression(get_binop_right(n));
 522
 523         switch (get_irn_opcode(n)) {
 524         case iro_Const:
 525         case iro_SymConst:
 526         case iro_Unknown:
 527                 return 1;
 528         case iro_Conv:
 529         case iro_Cast:
 530                 return is_irn_const_expression(get_irn_n(n, 0));
 531         default:
 532                 break;
 533         }
 534         return 0;
 535 }
 536
 537 /*
 538  * Copies a firm subgraph that complies to the restrictions for
 539  * constant expressions to block.
 540  */
 541 ir_node *copy_const_value(dbg_info *dbg, ir_node *n, ir_node *block)
 542 {
 543         ir_graph *irg = get_irn_irg(block);
 544         ir_node *nn;
 545         ir_mode *m;
 546
 547         /* @@@ GL I think  we should implement this using the routines from irgopt for
 548                dead node elimination/inlineing. */
 549
 550         m = get_irn_mode(n);
 551         switch (get_irn_opcode(n)) {
 552         case iro_Const:
 553                 nn = new_rd_Const(dbg, irg, get_Const_tarval(n));
 554                 break;
 555         case iro_SymConst:
 556                 nn = new_rd_SymConst(dbg, irg, get_irn_mode(n), get_SymConst_symbol(n), get_SymConst_kind(n));
 557                 break;
 558         case iro_Add:
 559                 nn = new_rd_Add(dbg, block,
 560                                 copy_const_value(dbg, get_Add_left(n), block),
 561                                 copy_const_value(dbg, get_Add_right(n), block), m);
 562                 break;
 563         case iro_Sub:
 564                 nn = new_rd_Sub(dbg, block,
 565                                 copy_const_value(dbg, get_Sub_left(n), block),
 566                                 copy_const_value(dbg, get_Sub_right(n), block), m);
 567                 break;
 568         case iro_Mul:
 569                 nn = new_rd_Mul(dbg, block,
 570                                 copy_const_value(dbg, get_Mul_left(n), block),
 571                                 copy_const_value(dbg, get_Mul_right(n), block), m);
 572                 break;
 573         case iro_And:
 574                 nn = new_rd_And(dbg, block,
 575                                 copy_const_value(dbg, get_And_left(n), block),
 576                                 copy_const_value(dbg, get_And_right(n), block), m);
 577                 break;
 578         case iro_Or:
 579                 nn = new_rd_Or(dbg, block,
 580                                copy_const_value(dbg, get_Or_left(n), block),
 581                                copy_const_value(dbg, get_Or_right(n), block), m);
 582                 break;
 583         case iro_Eor:
 584                 nn = new_rd_Eor(dbg, block,
 585                                 copy_const_value(dbg, get_Eor_left(n), block),
 586                                 copy_const_value(dbg, get_Eor_right(n), block), m);
 587                 break;
 588         case iro_Cast:
 589                 nn = new_rd_Cast(dbg, block,
 590                                  copy_const_value(dbg, get_Cast_op(n), block),
 591                                  get_Cast_type(n));
 592                 break;
 593         case iro_Conv:
 594                 nn = new_rd_Conv(dbg, block,
 595                                  copy_const_value(dbg, get_Conv_op(n), block), m);
 596                 break;
 597         case iro_Unknown:
 598                 nn = new_r_Unknown(irg, m); break;
 599         default:
 600                 panic("opcode invalid or not implemented");
 601         }
 602         return nn;
 603 }
 604
 605 /** Return the name of the initializer kind. */
 606 const char *get_initializer_kind_name(ir_initializer_kind_t ini)
 607 {
 608 #define X(a)    case a: return #a
 609         switch (ini) {
 610         X(IR_INITIALIZER_CONST);
 611         X(IR_INITIALIZER_TARVAL);
 612         X(IR_INITIALIZER_NULL);
 613         X(IR_INITIALIZER_COMPOUND);
 614     default: return "BAD VALUE";
 615         }
 616 #undef X
 617 }
 618
 619 static ir_initializer_t null_initializer = { IR_INITIALIZER_NULL };
 620
 621 ir_initializer_t *get_initializer_null(void)
 622 {
 623         return &null_initializer;
 624 }
 625
 626 ir_initializer_t *create_initializer_const(ir_node *value)
 627 {
 628         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 629
 630         ir_initializer_t *initializer
 631                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_const_t);
 632         initializer->kind         = IR_INITIALIZER_CONST;
 633         initializer->consti.value = value;
 634
 635         return initializer;
 636 }
 637
 638 ir_initializer_t *create_initializer_tarval(ir_tarval *tv)
 639 {
 640         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 641
 642         ir_initializer_t *initializer
 643                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_tarval_t);
 644         initializer->kind         = IR_INITIALIZER_TARVAL;
 645         initializer->tarval.value = tv;
 646
 647         return initializer;
 648 }
 649
 650 ir_initializer_t *create_initializer_compound(size_t n_entries)
 651 {
 652         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 653
 654         size_t i;
 655         size_t size  = sizeof(ir_initializer_compound_t)
 656                      + n_entries * sizeof(ir_initializer_t*)
 657                      - sizeof(ir_initializer_t*);
 658
 659         ir_initializer_t *initializer
 660                 = (ir_initializer_t*)obstack_alloc(obst, size);
 661         initializer->kind                    = IR_INITIALIZER_COMPOUND;
 662         initializer->compound.n_initializers = n_entries;
 663
 664         for (i = 0; i < n_entries; ++i) {
 665                 initializer->compound.initializers[i] = get_initializer_null();
 666         }
 667
 668         return initializer;
 669 }
 670
 671 ir_node *get_initializer_const_value(const ir_initializer_t *initializer)
 672 {
 673         assert(initializer->kind == IR_INITIALIZER_CONST);
 674         return skip_Id(initializer->consti.value);
 675 }
 676
 677 ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initializer)
 678 {
 679         assert(initializer->kind == IR_INITIALIZER_TARVAL);
 680         return initializer->tarval.value;
 681 }
 682
 683 size_t get_initializer_compound_n_entries(const ir_initializer_t *initializer)
 684 {
 685         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 686         return initializer->compound.n_initializers;
 687 }
 688
 689 void set_initializer_compound_value(ir_initializer_t *initializer,
 690                                     size_t index, ir_initializer_t *value)
 691 {
 692         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 693         assert(index < initializer->compound.n_initializers);
 694
 695         initializer->compound.initializers[index] = value;
 696 }
 697
 698 ir_initializer_t *get_initializer_compound_value(
 699                 const ir_initializer_t *initializer, size_t index)
 700 {
 701         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 702         assert(index < initializer->compound.n_initializers);
 703
 704         return initializer->compound.initializers[index];
 705 }
 706
 707 ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer)
 708 {
 709         return initializer->kind;
 710 }
 711
 712 static void check_entity_initializer(ir_entity *entity)
 713 {
 714 #ifndef NDEBUG
 715         ir_initializer_t *initializer = entity->initializer;
 716         ir_type          *entity_tp   = get_entity_type(entity);
 717         switch (initializer->kind) {
 718         case IR_INITIALIZER_COMPOUND:
 719                 assert(is_compound_type(entity_tp) || is_Array_type(entity_tp));
 720                 break;
 721         case IR_INITIALIZER_CONST:
 722                 /* methods are initialized by a SymConst */
 723                 assert(is_atomic_type(entity_tp) || is_Method_type(entity_tp));
 724                 break;
 725         case IR_INITIALIZER_TARVAL:
 726                 assert(is_atomic_type(entity_tp));
 727                 break;
 728         case IR_INITIALIZER_NULL:
 729                 break;
 730         }
 731 #endif
 732 }
 733
 734 void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer)
 735 {
 736         entity->initializer = initializer;
 737         check_entity_initializer(entity);
 738 }
 739
 740 int has_entity_initializer(const ir_entity *entity)
 741 {
 742         return entity->initializer != NULL;
 743 }
 744
 745 ir_initializer_t *get_entity_initializer(const ir_entity *entity)
 746 {
 747         return entity->initializer;
 748 }
 749
 750 int (get_entity_offset)(const ir_entity *ent)
 751 {
 752         return _get_entity_offset(ent);
 753 }
 754
 755 void (set_entity_offset)(ir_entity *ent, int offset)
 756 {
 757         _set_entity_offset(ent, offset);
 758 }
 759
 760 unsigned char (get_entity_offset_bits_remainder)(const ir_entity *ent)
 761 {
 762         return _get_entity_offset_bits_remainder(ent);
 763 }
 764
 765 void (set_entity_offset_bits_remainder)(ir_entity *ent, unsigned char offset)
 766 {
 767         _set_entity_offset_bits_remainder(ent, offset);
 768 }
 769
 770 void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 771 {
 772         if (ent->overwrites == NULL) {
 773                 ent->overwrites = NEW_ARR_F(ir_entity*, 0);
 774         }
 775         ARR_APP1(ir_entity *, ent->overwrites, overwritten);
 776         if (overwritten->overwrittenby == NULL) {
 777                 overwritten->overwrittenby = NEW_ARR_F(ir_entity*, 0);
 778         }
 779         ARR_APP1(ir_entity *, overwritten->overwrittenby, ent);
 780 }
 781
 782 size_t get_entity_n_overwrites(const ir_entity *ent)
 783 {
 784         if (ent->overwrites == NULL)
 785                 return 0;
 786         return ARR_LEN(ent->overwrites);
 787 }
 788
 789 size_t get_entity_overwrites_index(const ir_entity *ent, ir_entity *overwritten)
 790 {
 791         size_t i;
 792         size_t n = get_entity_n_overwrites(ent);
 793         for (i = 0; i < n; ++i) {
 794                 if (get_entity_overwrites(ent, i) == overwritten)
 795                         return i;
 796         }
 797         return (size_t)-1;
 798 }
 799
 800 ir_entity *get_entity_overwrites(const ir_entity *ent, size_t pos)
 801 {
 802         assert(pos < get_entity_n_overwrites(ent));
 803         return ent->overwrites[pos];
 804 }
 805
 806 void set_entity_overwrites(ir_entity *ent, size_t pos, ir_entity *overwritten)
 807 {
 808         assert(pos < get_entity_n_overwrites(ent));
 809         ent->overwrites[pos] = overwritten;
 810 }
 811
 812 void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 813 {
 814         size_t i;
 815         size_t n = get_entity_n_overwrites(ent);
 816         for (i = 0; i < n; ++i) {
 817                 if (ent->overwrites[i] == overwritten) {
 818                         for (; i < n - 1; i++)
 819                                 ent->overwrites[i] = ent->overwrites[i+1];
 820                         ARR_SETLEN(ir_entity*, ent->overwrites, n - 1);
 821                         break;
 822                 }
 823         }
 824 }
 825
 826
 827 size_t get_entity_n_overwrittenby(const ir_entity *ent)
 828 {
 829         if (ent->overwrittenby == NULL)
 830                 return 0;
 831         return ARR_LEN(ent->overwrittenby);
 832 }
 833
 834 size_t get_entity_overwrittenby_index(const ir_entity *ent,
 835                                       ir_entity *overwrites)
 836 {
 837         size_t i;
 838         size_t n = get_entity_n_overwrittenby(ent);
 839         for (i = 0; i < n; ++i) {
 840                 if (get_entity_overwrittenby(ent, i) == overwrites)
 841                         return i;
 842         }
 843         return (size_t)-1;
 844 }
 845
 846 ir_entity *get_entity_overwrittenby(const ir_entity *ent, size_t pos)
 847 {
 848         assert(pos < get_entity_n_overwrittenby(ent));
 849         return ent->overwrittenby[pos];
 850 }
 851
 852 void set_entity_overwrittenby(ir_entity *ent, size_t pos, ir_entity *overwrites)
 853 {
 854         assert(pos < get_entity_n_overwrittenby(ent));
 855         ent->overwrittenby[pos] = overwrites;
 856 }
 857
 858 void remove_entity_overwrittenby(ir_entity *ent, ir_entity *overwrites)
 859 {
 860         size_t i;
 861         size_t n = get_entity_n_overwrittenby(ent);
 862         for (i = 0; i < n; ++i) {
 863                 if (ent->overwrittenby[i] == overwrites) {
 864                         for (; i < n - 1; ++i)
 865                                 ent->overwrittenby[i] = ent->overwrittenby[i+1];
 866                         ARR_SETLEN(ir_entity*, ent->overwrittenby, n - 1);
 867                         break;
 868                 }
 869         }
 870 }
 871
 872 void *(get_entity_link)(const ir_entity *ent)
 873 {
 874         return _get_entity_link(ent);
 875 }
 876
 877 void (set_entity_link)(ir_entity *ent, void *l)
 878 {
 879         _set_entity_link(ent, l);
 880 }
 881
 882 ir_graph *(get_entity_irg)(const ir_entity *ent)
 883 {
 884         return _get_entity_irg(ent);
 885 }
 886
 887 void set_entity_irg(ir_entity *ent, ir_graph *irg)
 888 {
 889         assert(is_method_entity(ent));
 890         assert(get_entity_peculiarity(ent) == peculiarity_existent);
 891         ent->attr.mtd_attr.irg = irg;
 892 }
 893
 894 int (is_parameter_entity)(const ir_entity *entity)
 895 {
 896         return _is_parameter_entity(entity);
 897 }
 898
 899 size_t (get_entity_parameter_number)(const ir_entity *entity)
 900 {
 901         return _get_entity_parameter_number(entity);
 902 }
 903
 904 void set_entity_parameter_number(ir_entity *entity, size_t n)
 905 {
 906         assert(is_parameter_entity(entity));
 907         entity->attr.parameter.number = n;
 908 }
 909
 910 unsigned get_entity_vtable_number(const ir_entity *ent)
 911 {
 912         assert(is_method_entity((ir_entity *)ent));
 913         return ent->attr.mtd_attr.vtable_number;
 914 }
 915
 916 void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number)
 917 {
 918         assert(is_method_entity(ent));
 919         ent->attr.mtd_attr.vtable_number = vtable_number;
 920 }
 921
 922 int (is_entity)(const void *thing)
 923 {
 924         return _is_entity(thing);
 925 }
 926
 927 int is_atomic_entity(const ir_entity *ent)
 928 {
 929         ir_type *t      = get_entity_type(ent);
 930         const tp_op *op = get_type_tpop(t);
 931         return (op == type_primitive || op == type_pointer ||
 932                 op == type_enumeration || op == type_method);
 933 }
 934
 935 int is_compound_entity(const ir_entity *ent)
 936 {
 937         ir_type     *t  = get_entity_type(ent);
 938         const tp_op *op = get_type_tpop(t);
 939         return (op == type_class || op == type_struct ||
 940                 op == type_array || op == type_union);
 941 }
 942
 943 int is_method_entity(const ir_entity *ent)
 944 {
 945         ir_type *t = get_entity_type(ent);
 946         return is_Method_type(t);
 947 }
 948
 949 ir_visited_t (get_entity_visited)(const ir_entity *ent)
 950 {
 951         return _get_entity_visited(ent);
 952 }
 953
 954 void (set_entity_visited)(ir_entity *ent, ir_visited_t num)
 955 {
 956         _set_entity_visited(ent, num);
 957 }
 958
 959 void (mark_entity_visited)(ir_entity *ent)
 960 {
 961         _mark_entity_visited(ent);
 962 }
 963
 964 int (entity_visited)(const ir_entity *ent)
 965 {
 966         return _entity_visited(ent);
 967 }
 968
 969 int (entity_not_visited)(const ir_entity *ent)
 970 {
 971         return _entity_not_visited(ent);
 972 }
 973
 974 mtp_additional_properties get_entity_additional_properties(const ir_entity *ent)
 975 {
 976         ir_graph *irg;
 977
 978         assert(is_method_entity(ent));
 979
 980         /* first check, if the graph has additional properties */
 981         irg = get_entity_irg(ent);
 982
 983         if (irg)
 984                 return get_irg_additional_properties(irg);
 985
 986         if (ent->attr.mtd_attr.irg_add_properties & mtp_property_inherited)
 987                 return get_method_additional_properties(get_entity_type(ent));
 988
 989         return ent->attr.mtd_attr.irg_add_properties;
 990 }
 991
 992 void set_entity_additional_properties(ir_entity *ent, mtp_additional_properties property_mask)
 993 {
 994         ir_graph *irg;
 995
 996         assert(is_method_entity(ent));
 997
 998         /* first check, if the graph exists */
 999         irg = get_entity_irg(ent);
1000         if (irg)
1001                 set_irg_additional_properties(irg, property_mask);
1002         else {
1003                 /* do not allow to set the mtp_property_inherited flag or
1004                  * the automatic inheritance of flags will not work */
1005                 ent->attr.mtd_attr.irg_add_properties = property_mask & ~mtp_property_inherited;
1006         }
1007 }
1008
1009 void add_entity_additional_properties(ir_entity *ent, mtp_additional_properties properties)
1010 {
1011         ir_graph *irg;
1012
1013         assert(is_method_entity(ent));
1014
1015         /* first check, if the graph exists */
1016         irg = get_entity_irg(ent);
1017         if (irg)
1018                 add_irg_additional_properties(irg, properties);
1019         else {
1020                 mtp_additional_properties mask = ent->attr.mtd_attr.irg_add_properties;
1021
1022                 if (mask & mtp_property_inherited)
1023                         mask = get_method_additional_properties(get_entity_type(ent));
1024
1025                 /* do not allow to set the mtp_property_inherited flag or
1026                  * the automatic inheritance of flags will not work */
1027                 ent->attr.mtd_attr.irg_add_properties = mask | (properties & ~mtp_property_inherited);
1028         }
1029 }
1030
1031 /* Returns the class type that this type info entity represents or NULL
1032    if ent is no type info entity. */
1033 ir_type *(get_entity_repr_class)(const ir_entity *ent)
1034 {
1035         return _get_entity_repr_class(ent);
1036 }
1037
1038 dbg_info *(get_entity_dbg_info)(const ir_entity *ent)
1039 {
1040         return _get_entity_dbg_info(ent);
1041 }
1042
1043 void (set_entity_dbg_info)(ir_entity *ent, dbg_info *db)
1044 {
1045         _set_entity_dbg_info(ent, db);
1046 }
1047
1048 int entity_is_externally_visible(const ir_entity *entity)
1049 {
1050         return get_entity_visibility(entity) != ir_visibility_local
1051                 || (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER);
1052 }
1053
1054 int entity_has_definition(const ir_entity *entity)
1055 {
1056         return entity->initializer != NULL
1057                 || get_entity_irg(entity) != NULL
1058                 || entity_has_compound_ent_values(entity);
1059 }
1060
1061 void ir_init_entity(void)
1062 {
1063         assert(firm_unknown_type && "Call init_type() before firm_init_entity()!");
1064         assert(!unknown_entity && "Call firm_init_entity() only once!");
1065
1066         unknown_entity = new_d_entity(NULL, new_id_from_str(UNKNOWN_ENTITY_NAME),
1067                                       firm_unknown_type, NULL);
1068         set_entity_visibility(unknown_entity, ir_visibility_external);
1069         set_entity_ld_ident(unknown_entity, get_entity_ident(unknown_entity));
1070 }
1071
1072 void ir_finish_entity(void)
1073 {
1074         if (unknown_entity != NULL) {
1075                 free_entity(unknown_entity);
1076                 unknown_entity = NULL;
1077         }
1078 }
1079
1080 ir_allocation get_entity_allocation(const ir_entity *entity)
1081 {
1082         return (ir_allocation)entity->allocation;
1083 }
1084
1085 void set_entity_allocation(ir_entity *entity, ir_allocation allocation)
1086 {
1087         entity->allocation = allocation;
1088 }
1089
1090 ir_peculiarity get_entity_peculiarity(const ir_entity *entity)
1091 {
1092         return (ir_peculiarity)entity->peculiarity;
1093 }
1094
1095 void set_entity_peculiarity(ir_entity *entity, ir_peculiarity peculiarity)
1096 {
1097         entity->peculiarity = peculiarity;
1098 }
1099
1100 void set_entity_final(ir_entity *entity, int final)
1101 {
1102         entity->final = final;
1103 }
1104
1105 int is_entity_final(const ir_entity *entity)
1106 {
1107         return entity->final;
1108 }