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