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