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