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                 return is_irn_const_expression(get_irn_n(n, 0));
 522         default:
 523                 break;
 524         }
 525         return 0;
 526 }
 527
 528 ir_node *copy_const_value(dbg_info *dbg, ir_node *n, ir_node *block)
 529 {
 530         ir_graph *irg = get_irn_irg(block);
 531         ir_node *nn;
 532         ir_mode *m;
 533
 534         /* @@@ GL I think  we should implement this using the routines from irgopt for
 535                dead node elimination/inlineing. */
 536
 537         m = get_irn_mode(n);
 538         switch (get_irn_opcode(n)) {
 539         case iro_Const:
 540                 nn = new_rd_Const(dbg, irg, get_Const_tarval(n));
 541                 break;
 542         case iro_SymConst:
 543                 nn = new_rd_SymConst(dbg, irg, get_irn_mode(n), get_SymConst_symbol(n), get_SymConst_kind(n));
 544                 break;
 545         case iro_Add:
 546                 nn = new_rd_Add(dbg, block,
 547                                 copy_const_value(dbg, get_Add_left(n), block),
 548                                 copy_const_value(dbg, get_Add_right(n), block), m);
 549                 break;
 550         case iro_Sub:
 551                 nn = new_rd_Sub(dbg, block,
 552                                 copy_const_value(dbg, get_Sub_left(n), block),
 553                                 copy_const_value(dbg, get_Sub_right(n), block), m);
 554                 break;
 555         case iro_Mul:
 556                 nn = new_rd_Mul(dbg, block,
 557                                 copy_const_value(dbg, get_Mul_left(n), block),
 558                                 copy_const_value(dbg, get_Mul_right(n), block), m);
 559                 break;
 560         case iro_And:
 561                 nn = new_rd_And(dbg, block,
 562                                 copy_const_value(dbg, get_And_left(n), block),
 563                                 copy_const_value(dbg, get_And_right(n), block), m);
 564                 break;
 565         case iro_Or:
 566                 nn = new_rd_Or(dbg, block,
 567                                copy_const_value(dbg, get_Or_left(n), block),
 568                                copy_const_value(dbg, get_Or_right(n), block), m);
 569                 break;
 570         case iro_Eor:
 571                 nn = new_rd_Eor(dbg, block,
 572                                 copy_const_value(dbg, get_Eor_left(n), block),
 573                                 copy_const_value(dbg, get_Eor_right(n), block), m);
 574                 break;
 575         case iro_Conv:
 576                 nn = new_rd_Conv(dbg, block,
 577                                  copy_const_value(dbg, get_Conv_op(n), block), m);
 578                 break;
 579         case iro_Minus:
 580                 nn = new_rd_Minus(dbg, block,
 581                                   copy_const_value(dbg, get_Minus_op(n), block), m);
 582                 break;
 583         case iro_Not:
 584                 nn = new_rd_Not(dbg, block,
 585                                 copy_const_value(dbg, get_Not_op(n), block), m);
 586                 break;
 587         case iro_Unknown:
 588                 nn = new_r_Unknown(irg, m); break;
 589         default:
 590                 panic("opcode invalid or not implemented %+F", n);
 591         }
 592         return nn;
 593 }
 594
 595 const char *get_initializer_kind_name(ir_initializer_kind_t ini)
 596 {
 597 #define X(a)    case a: return #a
 598         switch (ini) {
 599         X(IR_INITIALIZER_CONST);
 600         X(IR_INITIALIZER_TARVAL);
 601         X(IR_INITIALIZER_NULL);
 602         X(IR_INITIALIZER_COMPOUND);
 603     default: return "BAD VALUE";
 604         }
 605 #undef X
 606 }
 607
 608 static ir_initializer_t null_initializer = { IR_INITIALIZER_NULL };
 609
 610 ir_initializer_t *get_initializer_null(void)
 611 {
 612         return &null_initializer;
 613 }
 614
 615 ir_initializer_t *create_initializer_const(ir_node *value)
 616 {
 617         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 618
 619         ir_initializer_t *initializer
 620                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_const_t);
 621         initializer->kind         = IR_INITIALIZER_CONST;
 622         initializer->consti.value = value;
 623
 624         return initializer;
 625 }
 626
 627 ir_initializer_t *create_initializer_tarval(ir_tarval *tv)
 628 {
 629         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 630
 631         ir_initializer_t *initializer
 632                 = (ir_initializer_t*)OALLOC(obst, ir_initializer_tarval_t);
 633         initializer->kind         = IR_INITIALIZER_TARVAL;
 634         initializer->tarval.value = tv;
 635
 636         return initializer;
 637 }
 638
 639 ir_initializer_t *create_initializer_compound(size_t n_entries)
 640 {
 641         struct obstack *obst = get_irg_obstack(get_const_code_irg());
 642
 643         size_t i;
 644         size_t size  = sizeof(ir_initializer_compound_t)
 645                      + n_entries * sizeof(ir_initializer_t*)
 646                      - sizeof(ir_initializer_t*);
 647
 648         ir_initializer_t *initializer
 649                 = (ir_initializer_t*)obstack_alloc(obst, size);
 650         initializer->kind                    = IR_INITIALIZER_COMPOUND;
 651         initializer->compound.n_initializers = n_entries;
 652
 653         for (i = 0; i < n_entries; ++i) {
 654                 initializer->compound.initializers[i] = get_initializer_null();
 655         }
 656
 657         return initializer;
 658 }
 659
 660 ir_node *get_initializer_const_value(const ir_initializer_t *initializer)
 661 {
 662         assert(initializer->kind == IR_INITIALIZER_CONST);
 663         return skip_Id(initializer->consti.value);
 664 }
 665
 666 ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initializer)
 667 {
 668         assert(initializer->kind == IR_INITIALIZER_TARVAL);
 669         return initializer->tarval.value;
 670 }
 671
 672 size_t get_initializer_compound_n_entries(const ir_initializer_t *initializer)
 673 {
 674         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 675         return initializer->compound.n_initializers;
 676 }
 677
 678 void set_initializer_compound_value(ir_initializer_t *initializer,
 679                                     size_t index, ir_initializer_t *value)
 680 {
 681         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 682         assert(index < initializer->compound.n_initializers);
 683
 684         initializer->compound.initializers[index] = value;
 685 }
 686
 687 ir_initializer_t *get_initializer_compound_value(
 688                 const ir_initializer_t *initializer, size_t index)
 689 {
 690         assert(initializer->kind == IR_INITIALIZER_COMPOUND);
 691         assert(index < initializer->compound.n_initializers);
 692
 693         return initializer->compound.initializers[index];
 694 }
 695
 696 ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer)
 697 {
 698         return initializer->kind;
 699 }
 700
 701 static void check_entity_initializer(ir_entity *entity)
 702 {
 703 #ifndef NDEBUG
 704         ir_initializer_t *initializer = entity->initializer;
 705         ir_type          *entity_tp   = get_entity_type(entity);
 706         switch (initializer->kind) {
 707         case IR_INITIALIZER_COMPOUND:
 708                 assert(is_compound_type(entity_tp) || is_Array_type(entity_tp));
 709                 break;
 710         case IR_INITIALIZER_CONST:
 711                 /* methods are initialized by a SymConst */
 712                 assert(is_atomic_type(entity_tp) || is_Method_type(entity_tp));
 713                 break;
 714         case IR_INITIALIZER_TARVAL:
 715                 assert(is_atomic_type(entity_tp));
 716                 break;
 717         case IR_INITIALIZER_NULL:
 718                 break;
 719         }
 720 #endif
 721 }
 722
 723 void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer)
 724 {
 725         entity->initializer = initializer;
 726         check_entity_initializer(entity);
 727 }
 728
 729 int has_entity_initializer(const ir_entity *entity)
 730 {
 731         return entity->initializer != NULL;
 732 }
 733
 734 ir_initializer_t *get_entity_initializer(const ir_entity *entity)
 735 {
 736         return entity->initializer;
 737 }
 738
 739 int (get_entity_offset)(const ir_entity *ent)
 740 {
 741         return _get_entity_offset(ent);
 742 }
 743
 744 void (set_entity_offset)(ir_entity *ent, int offset)
 745 {
 746         _set_entity_offset(ent, offset);
 747 }
 748
 749 unsigned char (get_entity_offset_bits_remainder)(const ir_entity *ent)
 750 {
 751         return _get_entity_offset_bits_remainder(ent);
 752 }
 753
 754 void (set_entity_offset_bits_remainder)(ir_entity *ent, unsigned char offset)
 755 {
 756         _set_entity_offset_bits_remainder(ent, offset);
 757 }
 758
 759 void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 760 {
 761         if (ent->overwrites == NULL) {
 762                 ent->overwrites = NEW_ARR_F(ir_entity*, 0);
 763         }
 764         ARR_APP1(ir_entity *, ent->overwrites, overwritten);
 765         if (overwritten->overwrittenby == NULL) {
 766                 overwritten->overwrittenby = NEW_ARR_F(ir_entity*, 0);
 767         }
 768         ARR_APP1(ir_entity *, overwritten->overwrittenby, ent);
 769 }
 770
 771 size_t get_entity_n_overwrites(const ir_entity *ent)
 772 {
 773         if (ent->overwrites == NULL)
 774                 return 0;
 775         return ARR_LEN(ent->overwrites);
 776 }
 777
 778 size_t get_entity_overwrites_index(const ir_entity *ent, ir_entity *overwritten)
 779 {
 780         size_t i;
 781         size_t n = get_entity_n_overwrites(ent);
 782         for (i = 0; i < n; ++i) {
 783                 if (get_entity_overwrites(ent, i) == overwritten)
 784                         return i;
 785         }
 786         return (size_t)-1;
 787 }
 788
 789 ir_entity *get_entity_overwrites(const ir_entity *ent, size_t pos)
 790 {
 791         assert(pos < get_entity_n_overwrites(ent));
 792         return ent->overwrites[pos];
 793 }
 794
 795 void set_entity_overwrites(ir_entity *ent, size_t pos, ir_entity *overwritten)
 796 {
 797         assert(pos < get_entity_n_overwrites(ent));
 798         ent->overwrites[pos] = overwritten;
 799 }
 800
 801 void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten)
 802 {
 803         size_t i;
 804         size_t n = get_entity_n_overwrites(ent);
 805         for (i = 0; i < n; ++i) {
 806                 if (ent->overwrites[i] == overwritten) {
 807                         for (; i < n - 1; i++)
 808                                 ent->overwrites[i] = ent->overwrites[i+1];
 809                         ARR_SETLEN(ir_entity*, ent->overwrites, n - 1);
 810                         break;
 811                 }
 812         }
 813 }
 814
 815
 816 size_t get_entity_n_overwrittenby(const ir_entity *ent)
 817 {
 818         if (ent->overwrittenby == NULL)
 819                 return 0;
 820         return ARR_LEN(ent->overwrittenby);
 821 }
 822
 823 size_t get_entity_overwrittenby_index(const ir_entity *ent,
 824                                       ir_entity *overwrites)
 825 {
 826         size_t i;
 827         size_t n = get_entity_n_overwrittenby(ent);
 828         for (i = 0; i < n; ++i) {
 829                 if (get_entity_overwrittenby(ent, i) == overwrites)
 830                         return i;
 831         }
 832         return (size_t)-1;
 833 }
 834
 835 ir_entity *get_entity_overwrittenby(const ir_entity *ent, size_t pos)
 836 {
 837         assert(pos < get_entity_n_overwrittenby(ent));
 838         return ent->overwrittenby[pos];
 839 }
 840
 841 void set_entity_overwrittenby(ir_entity *ent, size_t pos, ir_entity *overwrites)
 842 {
 843         assert(pos < get_entity_n_overwrittenby(ent));
 844         ent->overwrittenby[pos] = overwrites;
 845 }
 846
 847 void remove_entity_overwrittenby(ir_entity *ent, ir_entity *overwrites)
 848 {
 849         size_t i;
 850         size_t n = get_entity_n_overwrittenby(ent);
 851         for (i = 0; i < n; ++i) {
 852                 if (ent->overwrittenby[i] == overwrites) {
 853                         for (; i < n - 1; ++i)
 854                                 ent->overwrittenby[i] = ent->overwrittenby[i+1];
 855                         ARR_SETLEN(ir_entity*, ent->overwrittenby, n - 1);
 856                         break;
 857                 }
 858         }
 859 }
 860
 861 void *(get_entity_link)(const ir_entity *ent)
 862 {
 863         return _get_entity_link(ent);
 864 }
 865
 866 void (set_entity_link)(ir_entity *ent, void *l)
 867 {
 868         _set_entity_link(ent, l);
 869 }
 870
 871 ir_graph *(get_entity_irg)(const ir_entity *ent)
 872 {
 873         return _get_entity_irg(ent);
 874 }
 875
 876 void set_entity_irg(ir_entity *ent, ir_graph *irg)
 877 {
 878         assert(is_method_entity(ent));
 879         assert(get_entity_peculiarity(ent) == peculiarity_existent);
 880         ent->attr.mtd_attr.irg = irg;
 881 }
 882
 883 int (is_parameter_entity)(const ir_entity *entity)
 884 {
 885         return _is_parameter_entity(entity);
 886 }
 887
 888 size_t (get_entity_parameter_number)(const ir_entity *entity)
 889 {
 890         return _get_entity_parameter_number(entity);
 891 }
 892
 893 void set_entity_parameter_number(ir_entity *entity, size_t n)
 894 {
 895         assert(is_parameter_entity(entity));
 896         entity->attr.parameter.number = n;
 897 }
 898
 899 unsigned get_entity_vtable_number(const ir_entity *ent)
 900 {
 901         assert(is_method_entity((ir_entity *)ent));
 902         return ent->attr.mtd_attr.vtable_number;
 903 }
 904
 905 void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number)
 906 {
 907         assert(is_method_entity(ent));
 908         ent->attr.mtd_attr.vtable_number = vtable_number;
 909 }
 910
 911 int is_unknown_entity(const ir_entity *entity)
 912 {
 913         return entity->entity_kind == IR_ENTITY_UNKNOWN;
 914 }
 915
 916 int (is_entity)(const void *thing)
 917 {
 918         return _is_entity(thing);
 919 }
 920
 921 int is_atomic_entity(const ir_entity *ent)
 922 {
 923         ir_type *t      = get_entity_type(ent);
 924         const tp_op *op = get_type_tpop(t);
 925         return (op == type_primitive || op == type_pointer ||
 926                 op == type_enumeration || op == type_method);
 927 }
 928
 929 int is_compound_entity(const ir_entity *ent)
 930 {
 931         ir_type     *t  = get_entity_type(ent);
 932         const tp_op *op = get_type_tpop(t);
 933         return (op == type_class || op == type_struct ||
 934                 op == type_array || op == type_union);
 935 }
 936
 937 int is_method_entity(const ir_entity *ent)
 938 {
 939         ir_type *t = get_entity_type(ent);
 940         return is_Method_type(t);
 941 }
 942
 943 ir_visited_t (get_entity_visited)(const ir_entity *ent)
 944 {
 945         return _get_entity_visited(ent);
 946 }
 947
 948 void (set_entity_visited)(ir_entity *ent, ir_visited_t num)
 949 {
 950         _set_entity_visited(ent, num);
 951 }
 952
 953 void (mark_entity_visited)(ir_entity *ent)
 954 {
 955         _mark_entity_visited(ent);
 956 }
 957
 958 int (entity_visited)(const ir_entity *ent)
 959 {
 960         return _entity_visited(ent);
 961 }
 962
 963 int (entity_not_visited)(const ir_entity *ent)
 964 {
 965         return _entity_not_visited(ent);
 966 }
 967
 968 mtp_additional_properties get_entity_additional_properties(const ir_entity *ent)
 969 {
 970         assert(is_method_entity(ent));
 971         return ent->attr.mtd_attr.properties;
 972 }
 973
 974 void set_entity_additional_properties(ir_entity *ent, mtp_additional_properties property_mask)
 975 {
 976         assert(is_method_entity(ent));
 977         /* you mustn't set less properties than the entities type */
 978         assert((get_method_additional_properties(get_entity_type(ent)) & ~property_mask) == 0);
 979
 980         /* do not allow to set the mtp_property_inherited flag or
 981          * the automatic inheritance of flags will not work */
 982         ent->attr.mtd_attr.properties = property_mask;
 983 }
 984
 985 void add_entity_additional_properties(ir_entity *ent, mtp_additional_properties properties)
 986 {
 987         assert(is_method_entity(ent));
 988
 989         /* do not allow to set the mtp_property_inherited flag or
 990          * the automatic inheritance of flags will not work */
 991         ent->attr.mtd_attr.properties |= properties;
 992 }
 993
 994 ir_type *(get_entity_repr_class)(const ir_entity *ent)
 995 {
 996         return _get_entity_repr_class(ent);
 997 }
 998
 999 dbg_info *(get_entity_dbg_info)(const ir_entity *ent)
1000 {
1001         return _get_entity_dbg_info(ent);
1002 }
1003
1004 void (set_entity_dbg_info)(ir_entity *ent, dbg_info *db)
1005 {
1006         _set_entity_dbg_info(ent, db);
1007 }
1008
1009 int entity_is_externally_visible(const ir_entity *entity)
1010 {
1011         return get_entity_visibility(entity) != ir_visibility_local
1012                 || (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER);
1013 }
1014
1015 int entity_has_definition(const ir_entity *entity)
1016 {
1017         if (is_method_entity(entity)) {
1018                 return get_entity_irg(entity) != NULL
1019                     && (get_entity_linkage(entity) & IR_LINKAGE_NO_CODEGEN) == 0;
1020         } else {
1021                 return entity->initializer != NULL;
1022         }
1023 }
1024
1025 void ir_init_entity(ir_prog *irp)
1026 {
1027         ident *id = new_id_from_str(UNKNOWN_ENTITY_NAME);
1028         irp->unknown_entity = intern_new_entity(NULL, IR_ENTITY_UNKNOWN, id,
1029                                                 irp->unknown_type, NULL);
1030         set_entity_visibility(irp->unknown_entity, ir_visibility_external);
1031         set_entity_ld_ident(irp->unknown_entity, id);
1032         hook_new_entity(irp->unknown_entity);
1033 }
1034
1035 void ir_finish_entity(ir_prog *irp)
1036 {
1037         free_entity(irp->unknown_entity);
1038 }
1039
1040 ir_allocation get_entity_allocation(const ir_entity *entity)
1041 {
1042         return (ir_allocation)entity->allocation;
1043 }
1044
1045 void set_entity_allocation(ir_entity *entity, ir_allocation allocation)
1046 {
1047         entity->allocation = allocation;
1048 }
1049
1050 ir_peculiarity get_entity_peculiarity(const ir_entity *entity)
1051 {
1052         return (ir_peculiarity)entity->peculiarity;
1053 }
1054
1055 void set_entity_peculiarity(ir_entity *entity, ir_peculiarity peculiarity)
1056 {
1057         entity->peculiarity = peculiarity;
1058 }
1059
1060 void set_entity_final(ir_entity *entity, int final)
1061 {
1062         entity->final = final;
1063 }
1064
1065 int is_entity_final(const ir_entity *entity)
1066 {
1067         return entity->final;
1068 }