nsz Git - libfirm/blob - ir/ir/irio.c

   1 /*
   2  * Copyright (C) 1995-2009 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   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29
  30 #include "irio.h"
  31
  32 #include "irnode_t.h"
  33 #include "irprog.h"
  34 #include "irgraph_t.h"
  35 #include "ircons.h"
  36 #include "irgmod.h"
  37 #include "irflag_t.h"
  38 #include "irgwalk.h"
  39 #include "tv.h"
  40 #include "array.h"
  41 #include "error.h"
  42 #include "adt/set.h"
  43
  44 #define SYMERROR ((unsigned) ~0)
  45
  46 typedef struct io_env_t
  47 {
  48         FILE *file;
  49         set *idset;               /**< id_entry set, which maps from file ids to new Firm elements */
  50         int ignoreblocks;
  51         int line, col;
  52         ir_type **fixedtypes;
  53 } io_env_t;
  54
  55 typedef struct lex_state_t
  56 {
  57         long offs;
  58         int line, col;
  59 } lex_state_t;
  60
  61 typedef enum typetag_t
  62 {
  63         tt_align,
  64         tt_allocation,
  65         tt_builtin,
  66         tt_initializer,
  67         tt_iro,
  68         tt_keyword,
  69         tt_peculiarity,
  70         tt_pin_state,
  71         tt_tpo,
  72         tt_type_state,
  73         tt_variability,
  74         tt_visibility,
  75         tt_volatility
  76 } typetag_t;
  77
  78 typedef enum keyword_t
  79 {
  80         kw_constirg,
  81         kw_entity,
  82         kw_frametype,
  83         kw_irg,
  84         kw_valuetype,
  85         kw_type,
  86         kw_typegraph
  87 } keyword_t;
  88
  89 typedef struct symbol_t
  90 {
  91         const char *str;      /**< The name of this symbol. */
  92         typetag_t   typetag;  /**< The type tag of this symbol. */
  93         unsigned    code;     /**< The value of this symbol. */
  94 } symbol_t;
  95
  96 typedef struct id_entry
  97 {
  98         long id;
  99         void *elem;
 100 } id_entry;
 101
 102 /** The symbol table, a set of symbol_t elements. */
 103 static set *symtbl;
 104
 105
 106 /**
 107  * Calculate a hash value for a string.
 108  */
 109 static unsigned string_hash(const char *str, int len)
 110 {
 111         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
 112 }
 113
 114 /**
 115  * Compare two symbol table entries.
 116  */
 117 static int symbol_cmp(const void *elt, const void *key, size_t size)
 118 {
 119         int res;
 120         const symbol_t *entry = (const symbol_t *) elt;
 121         const symbol_t *keyentry = (const symbol_t *) key;
 122         (void) size;
 123         res = entry->typetag - keyentry->typetag;
 124         if(res) return res;
 125         return strcmp(entry->str, keyentry->str);
 126 }
 127
 128 static int id_cmp(const void *elt, const void *key, size_t size)
 129 {
 130         const id_entry *entry = (const id_entry *) elt;
 131         const id_entry *keyentry = (const id_entry *) key;
 132         (void) size;
 133         return entry->id - keyentry->id;
 134 }
 135
 136 /** Initializes the symbol table. May be called more than once without problems. */
 137 static void symtbl_init(void)
 138 {
 139         symbol_t key;
 140
 141         /* Only initialize once */
 142         if(symtbl != NULL)
 143                 return;
 144
 145         symtbl = new_set(symbol_cmp, 256);
 146
 147 #define INSERT(s, tt, cod)                                       \
 148         key.str = (s);                                               \
 149         key.typetag = (tt);                                          \
 150         key.code = (cod);                                            \
 151         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1) + tt * 17)
 152
 153 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 154 #define INSERTKEYWORD(k) INSERT(#k, tt_keyword, kw_##k)
 155
 156         INSERT("array", tt_tpo, tpo_array);
 157         INSERT("class", tt_tpo, tpo_class);
 158         INSERT("method", tt_tpo, tpo_method);
 159         INSERT("pointer", tt_tpo, tpo_pointer);
 160         INSERT("primitive", tt_tpo, tpo_primitive);
 161         INSERT("struct", tt_tpo, tpo_struct);
 162         INSERT("union", tt_tpo, tpo_union);
 163         INSERT("Unknown", tt_tpo, tpo_unknown);
 164
 165         INSERTKEYWORD(constirg);
 166         INSERTKEYWORD(entity);
 167         INSERTKEYWORD(frametype);
 168         INSERTKEYWORD(irg);
 169         INSERTKEYWORD(valuetype);
 170         INSERTKEYWORD(type);
 171         INSERTKEYWORD(typegraph);
 172
 173 #include "gen_irio_lex.inl"
 174
 175         INSERTENUM(tt_align, align_non_aligned);
 176         INSERTENUM(tt_align, align_is_aligned);
 177
 178         INSERTENUM(tt_allocation, allocation_automatic);
 179         INSERTENUM(tt_allocation, allocation_parameter);
 180         INSERTENUM(tt_allocation, allocation_dynamic);
 181         INSERTENUM(tt_allocation, allocation_static);
 182
 183         INSERTENUM(tt_pin_state, op_pin_state_floats);
 184         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 185         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 186         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 187
 188         INSERTENUM(tt_type_state, layout_undefined);
 189         INSERTENUM(tt_type_state, layout_fixed);
 190
 191         INSERTENUM(tt_variability, variability_uninitialized);
 192         INSERTENUM(tt_variability, variability_initialized);
 193         INSERTENUM(tt_variability, variability_part_constant);
 194         INSERTENUM(tt_variability, variability_constant);
 195
 196         INSERTENUM(tt_visibility, visibility_local);
 197         INSERTENUM(tt_visibility, visibility_external_visible);
 198         INSERTENUM(tt_visibility, visibility_external_allocated);
 199
 200         INSERTENUM(tt_volatility, volatility_non_volatile);
 201         INSERTENUM(tt_volatility, volatility_is_volatile);
 202
 203         INSERTENUM(tt_peculiarity, peculiarity_description);
 204         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 205         INSERTENUM(tt_peculiarity, peculiarity_existent);
 206
 207         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 208         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 209         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 210         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 211
 212         INSERTENUM(tt_builtin, ir_bk_trap);
 213         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 214         INSERTENUM(tt_builtin, ir_bk_return_address);
 215         INSERTENUM(tt_builtin, ir_bk_frame_addess);
 216         INSERTENUM(tt_builtin, ir_bk_prefetch);
 217         INSERTENUM(tt_builtin, ir_bk_ffs);
 218         INSERTENUM(tt_builtin, ir_bk_clz);
 219         INSERTENUM(tt_builtin, ir_bk_ctz);
 220         INSERTENUM(tt_builtin, ir_bk_popcount);
 221         INSERTENUM(tt_builtin, ir_bk_parity);
 222         INSERTENUM(tt_builtin, ir_bk_bswap);
 223         INSERTENUM(tt_builtin, ir_bk_inport);
 224         INSERTENUM(tt_builtin, ir_bk_outport);
 225         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 226
 227 #undef INSERTENUM
 228 #undef INSERT
 229 }
 230
 231 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 232 static unsigned symbol(const char *str, typetag_t typetag)
 233 {
 234         symbol_t key, *entry;
 235
 236         key.str = str;
 237         key.typetag = typetag;
 238
 239         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)) + typetag * 17);
 240         return entry ? entry->code : SYMERROR;
 241 }
 242
 243 static void *get_id(io_env_t *env, long id)
 244 {
 245         id_entry key, *entry;
 246         key.id = id;
 247
 248         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 249         return entry ? entry->elem : NULL;
 250 }
 251
 252 static void set_id(io_env_t *env, long id, void *elem)
 253 {
 254         id_entry key;
 255         key.id = id;
 256         key.elem = elem;
 257         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 258 }
 259
 260 static void write_mode(io_env_t *env, ir_mode *mode)
 261 {
 262         fputs(get_mode_name(mode), env->file);
 263         fputc(' ', env->file);
 264 }
 265
 266 static void write_tarval(io_env_t *env, tarval *tv)
 267 {
 268         char buf[1024];
 269         write_mode(env, get_tarval_mode(tv));
 270         tarval_snprintf(buf, sizeof(buf), tv);
 271         fputs(buf, env->file);
 272         fputc(' ', env->file);
 273 }
 274
 275 static void write_pin_state(io_env_t *env, ir_node *irn)
 276 {
 277         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 278         fputc(' ', env->file);
 279 }
 280
 281 static void write_volatility(io_env_t *env, ir_node *irn)
 282 {
 283         ir_volatility vol;
 284
 285         if(is_Load(irn)) vol = get_Load_volatility(irn);
 286         else if(is_Store(irn)) vol = get_Store_volatility(irn);
 287         else assert(0 && "Invalid optype for write_volatility");
 288
 289         fputs(get_volatility_name(vol), env->file);
 290         fputc(' ', env->file);
 291 }
 292
 293 static void write_align(io_env_t *env, ir_node *irn)
 294 {
 295         ir_align align;
 296
 297         if(is_Load(irn)) align = get_Load_align(irn);
 298         else if(is_Store(irn)) align = get_Store_align(irn);
 299         else assert(0 && "Invalid optype for write_align");
 300
 301         fputs(get_align_name(align), env->file);
 302         fputc(' ', env->file);
 303 }
 304
 305 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 306 {
 307         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 308         fputc(' ', env->file);
 309 }
 310
 311 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 312 {
 313         FILE *f = env->file;
 314         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 315
 316         fputs(get_initializer_kind_name(ini_kind), f);
 317         fputc(' ', f);
 318
 319         switch(ini_kind)
 320         {
 321                 case IR_INITIALIZER_CONST:
 322                         fprintf(f, "%ld ", get_irn_node_nr(get_initializer_const_value(ini)));
 323                         break;
 324
 325                 case IR_INITIALIZER_TARVAL:
 326                         write_tarval(env, get_initializer_tarval_value(ini));
 327                         break;
 328
 329                 case IR_INITIALIZER_NULL:
 330                         break;
 331
 332                 case IR_INITIALIZER_COMPOUND:
 333                 {
 334                         unsigned i, n = get_initializer_compound_n_entries(ini);
 335                         fprintf(f, "%d ", n);
 336                         for(i = 0; i < n; i++)
 337                                 write_initializer(env, get_initializer_compound_value(ini, i));
 338                         break;
 339                 }
 340
 341                 default:
 342                         panic("Unknown initializer kind");
 343         }
 344 }
 345
 346 static void export_type_common(io_env_t *env, ir_type *tp)
 347 {
 348         fprintf(env->file, "\t%s %ld %s \"%s\" %u %u %s %s ",
 349                         is_frame_type(tp) ? "frametype" : is_value_param_type(tp) ? "valuetype" : "type",
 350                         get_type_nr(tp),
 351                         get_type_tpop_name(tp),
 352                         get_type_name(tp),
 353                         get_type_size_bytes(tp),
 354                         get_type_alignment_bytes(tp),
 355                         get_type_state_name(get_type_state(tp)),
 356                         get_visibility_name(get_type_visibility(tp)));
 357 }
 358
 359 static void export_type_pre(io_env_t *env, ir_type *tp)
 360 {
 361         FILE *f = env->file;
 362         int i;
 363
 364         // skip types to be handled by post walker
 365         switch(get_type_tpop_code(tp))
 366         {
 367                 case tpo_array:
 368                 case tpo_method:
 369                 case tpo_pointer:
 370                         return;
 371         }
 372
 373         export_type_common(env, tp);
 374
 375         switch(get_type_tpop_code(tp))
 376         {
 377                 case tpo_class:
 378                         /* TODO: inheritance stuff not supported yet */
 379                         printf("Inheritance of classes not supported yet!\n");
 380                         break;
 381
 382                 case tpo_primitive:
 383                         write_mode(env, get_type_mode(tp));
 384                         break;
 385
 386                 case tpo_struct:
 387                         break;
 388
 389                 case tpo_union:
 390                         break;
 391
 392                 case tpo_unknown:
 393                         break;
 394
 395                 default:
 396                         printf("export_type_pre: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 397                         break;
 398         }
 399         fputc('\n', f);
 400 }
 401
 402 static void export_type_post(io_env_t *env, ir_type *tp)
 403 {
 404         FILE *f = env->file;
 405         int i;
 406
 407         // skip types already handled by pre walker
 408         switch(get_type_tpop_code(tp))
 409         {
 410                 case tpo_class:
 411                 case tpo_primitive:
 412                 case tpo_struct:
 413                 case tpo_union:
 414                 case tpo_unknown:
 415                         return;
 416         }
 417
 418         export_type_common(env, tp);
 419
 420         switch(get_type_tpop_code(tp))
 421         {
 422                 case tpo_array:
 423                 {
 424                         int n = get_array_n_dimensions(tp);
 425                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 426                         for(i = 0; i < n; i++)
 427                         {
 428                                 ir_node *lower = get_array_lower_bound(tp, i);
 429                                 ir_node *upper = get_array_upper_bound(tp, i);
 430
 431                                 if(is_Const(lower)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 432                                 else panic("Lower array bound is not constant");
 433
 434                                 if(is_Const(upper)) fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 435                                 else if(is_Unknown(upper)) fputs("unknown ", f);
 436                                 else panic("Upper array bound is not constant");
 437                         }
 438                         break;
 439                 }
 440
 441                 case tpo_method:
 442                 {
 443                         int nparams = get_method_n_params(tp);
 444                         int nresults = get_method_n_ress(tp);
 445                         fprintf(f, "0x%X 0x%X %i %i ", get_method_calling_convention(tp),
 446                                 get_method_additional_properties(tp), nparams, nresults);
 447                         for(i = 0; i < nparams; i++)
 448                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 449                         for(i = 0; i < nresults; i++)
 450                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 451                         fprintf(f, "%d ", get_method_first_variadic_param_index(tp));
 452                         break;
 453                 }
 454
 455                 case tpo_pointer:
 456                         write_mode(env, get_type_mode(tp));
 457                         fprintf(f, "%ld ", get_type_nr(get_pointer_points_to_type(tp)));
 458                         break;
 459
 460                 default:
 461                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 462                         break;
 463         }
 464         fputc('\n', f);
 465 }
 466
 467 static void export_entity(io_env_t *env, ir_entity *ent)
 468 {
 469         ir_type *owner = get_entity_owner(ent);
 470         fprintf(env->file, "\tentity %ld \"%s\" \"%s\" %ld %ld %d %u %s %s %s %s %s ",
 471                         get_entity_nr(ent),
 472                         get_entity_name(ent),
 473                         ent->ld_name ? get_id_str(ent->ld_name) : "",
 474                         get_type_nr(get_entity_type(ent)),
 475                         get_type_nr(owner),
 476                         get_entity_offset(ent),
 477                         (unsigned) get_entity_offset_bits_remainder(ent),
 478                         get_allocation_name(get_entity_allocation(ent)),
 479                         get_visibility_name(get_entity_visibility(ent)),
 480                         get_variability_name(get_entity_variability(ent)),
 481                         get_peculiarity_name(get_entity_peculiarity(ent)),
 482                         get_volatility_name(get_entity_volatility(ent)));
 483
 484         // TODO: inheritance stuff for class entities not supported yet
 485         if(is_Class_type(owner) && owner != get_glob_type())
 486                 printf("Inheritance of class entities not supported yet!\n");
 487
 488         if(get_entity_variability(ent) != variability_uninitialized
 489                 && get_entity_visibility(ent) != visibility_external_allocated)
 490         {
 491                 if(is_compound_entity(ent))
 492                 {
 493                         if(has_entity_initializer(ent))
 494                         {
 495                                 fputs("initializer ", env->file);
 496                                 write_initializer(env, get_entity_initializer(ent));
 497                         }
 498                         else
 499                         {
 500                                 int i, n = get_compound_ent_n_values(ent);
 501                                 fputs("noninitializer ", env->file);
 502                                 fprintf(env->file, "%d ", n);
 503                                 for(i = 0; i < n; i++)
 504                                 {
 505                                         ir_entity *member = get_compound_ent_value_member(ent, i);
 506                                         ir_node   *irn    = get_compound_ent_value(ent, i);
 507                                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 508                                 }
 509                         }
 510                 }
 511                 else
 512                 {
 513                         ir_node *irn = get_atomic_ent_value(ent);
 514                         fprintf(env->file, "%ld ", get_irn_node_nr(irn));
 515                 }
 516         }
 517
 518         fputc('\n', env->file);
 519 }
 520
 521 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 522 {
 523         io_env_t *env = (io_env_t *) ctx;
 524         if(get_kind(tore.typ) == k_type)
 525                 export_type_pre(env, tore.typ);
 526 }
 527
 528 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 529 {
 530         io_env_t *env = (io_env_t *) ctx;
 531
 532         switch(get_kind(tore.ent))
 533         {
 534                 case k_entity:
 535                         export_entity(env, tore.ent);
 536                         break;
 537
 538                 case k_type:
 539                         export_type_post(env, tore.typ);
 540                         break;
 541
 542                 default:
 543                         printf("export_type_or_ent_post: Unknown type or entity.\n");
 544                         break;
 545         }
 546 }
 547
 548 static void export_node(ir_node *irn, void *ctx)
 549 {
 550         io_env_t *env = (io_env_t *) ctx;
 551         int i, n;
 552         unsigned opcode = get_irn_opcode(irn);
 553
 554         if(env->ignoreblocks && opcode == iro_Block)
 555                 return;
 556
 557         n = get_irn_arity(irn);
 558
 559         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 560
 561         for(i = -1; i < n; i++)
 562         {
 563                 ir_node *pred = get_irn_n(irn, i);
 564                 if(pred == NULL) {
 565                         /* Anchor node may have NULL predecessors */
 566                         assert(is_Anchor(irn));
 567                         fputs("-1 ", env->file);
 568                 } else {
 569                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 570                 }
 571         }
 572
 573         fprintf(env->file, "] { ");
 574
 575         switch(opcode)
 576         {
 577                 #include "gen_irio_export.inl"
 578         }
 579         fputs("}\n", env->file);
 580 }
 581
 582 /** Exports the whole irp to the given file in a textual form. */
 583 void ir_export(const char *filename)
 584 {
 585         io_env_t env;
 586         int i, n_irgs = get_irp_n_irgs(), n_pseudoirgs = get_irp_n_pseudo_irgs();
 587
 588         env.file = fopen(filename, "wt");
 589         if(!env.file)
 590         {
 591                 perror(filename);
 592                 return;
 593         }
 594
 595         fputs("typegraph {\n", env.file);
 596
 597         type_walk_plus_frames(export_type_or_ent_pre, export_type_or_ent_post, &env);
 598         /* TODO: Visit frame types and "types for value params"? */
 599
 600         for(i = 0; i < n_irgs; i++)
 601         {
 602                 ir_graph *irg = get_irp_irg(i);
 603                 ir_type *valuetype = get_irg_value_param_type(irg);
 604
 605                 fprintf(env.file, "}\n\nirg %ld %ld %ld {\n", get_entity_nr(get_irg_entity(irg)),
 606                         get_type_nr(get_irg_frame_type(irg)),
 607                         valuetype == NULL ? -1 : get_type_nr(valuetype));
 608
 609                 env.ignoreblocks = 0;
 610                 irg_block_walk_graph(irg, NULL, export_node, &env);
 611
 612                 env.ignoreblocks = 1;
 613                 irg_walk_anchors(irg, NULL, export_node, &env);
 614         }
 615
 616         fputs("}\n\nconstirg {\n", env.file);
 617         walk_const_code(NULL, export_node, &env);
 618         fputs("}\n", env.file);
 619
 620         fclose(env.file);
 621 }
 622
 623 /** Exports the given irg to the given file. */
 624 void ir_export_irg(ir_graph *irg, const char *filename)
 625 {
 626         io_env_t env;
 627
 628         env.file = fopen(filename, "wt");
 629         if(!env.file)
 630         {
 631                 perror(filename);
 632                 return;
 633         }
 634
 635         fputs("typegraph {\n", env.file);
 636
 637         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 638
 639         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 640
 641         env.ignoreblocks = 0;
 642         irg_block_walk_graph(irg, NULL, export_node, &env);
 643
 644         env.ignoreblocks = 1;
 645         irg_walk_anchors(irg, NULL, export_node, &env);
 646
 647         /* TODO: Only output needed constants */
 648         fputs("}\n\nconstirg {\n", env.file);
 649         walk_const_code(NULL, export_node, &env);
 650         fputs("}\n", env.file);
 651
 652         fclose(env.file);
 653 }
 654
 655 static void save_lex_state(io_env_t *env, lex_state_t *state)
 656 {
 657         state->offs = ftell(env->file);
 658         state->line = env->line;
 659         state->col  = env->col;
 660 }
 661
 662 static void restore_lex_state(io_env_t *env, lex_state_t *state)
 663 {
 664         fseek(env->file, state->offs, SEEK_SET);
 665         env->line = state->line;
 666         env->col  = state->col;
 667 }
 668
 669 static int read_c(io_env_t *env)
 670 {
 671         int ch = fgetc(env->file);
 672         switch(ch)
 673         {
 674                 case '\t':
 675                         env->col += 4;
 676                         break;
 677
 678                 case '\n':
 679                         env->col = 0;
 680                         env->line++;
 681                         break;
 682
 683                 default:
 684                         env->col++;
 685                         break;
 686         }
 687         return ch;
 688 }
 689
 690 /** Returns the first non-whitespace character or EOF. **/
 691 static int skip_ws(io_env_t *env)
 692 {
 693         while(1)
 694         {
 695                 int ch = read_c(env);
 696                 switch(ch)
 697                 {
 698                         case ' ':
 699                         case '\t':
 700                         case '\n':
 701                         case '\r':
 702                                 break;
 703
 704                         default:
 705                                 return ch;
 706                 }
 707         }
 708 }
 709
 710 static void skip_to(io_env_t *env, char to_ch)
 711 {
 712         int ch;
 713         do
 714         {
 715                 ch = read_c(env);
 716         }
 717         while(ch != to_ch && ch != EOF);
 718 }
 719
 720 static int expect_char(io_env_t *env, char ch)
 721 {
 722         int curch = skip_ws(env);
 723         if(curch != ch)
 724         {
 725                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 726                 return 0;
 727         }
 728         return 1;
 729 }
 730
 731 #define EXPECT(c) if(expect_char(env, (c))) {} else return 0
 732 #define EXPECT_OR_EXIT(c) if(expect_char(env, (c))) {} else exit(1)
 733
 734 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 735 {
 736         size_t i;
 737         for(i = 0; i < bufsize - 1; i++)
 738         {
 739                 int ch = read_c(env);
 740                 if(ch == EOF) break;
 741                 switch(ch)
 742                 {
 743                         case ' ':
 744                         case '\t':
 745                         case '\n':
 746                         case '\r':
 747                                 if(i != 0)
 748                                         goto endofword;
 749                                 i--;    // skip whitespace
 750                                 break;
 751
 752                         default:
 753                                 buf[i] = ch;
 754                                 break;
 755                 }
 756         }
 757 endofword:
 758         buf[i] = 0;
 759         return buf;
 760 }
 761
 762 static const char *read_str(io_env_t *env)
 763 {
 764         static char buf[1024];
 765         return read_str_to(env, buf, sizeof(buf));
 766 }
 767
 768 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 769 {
 770         size_t i;
 771         EXPECT_OR_EXIT('\"');
 772         for(i = 0; i < bufsize - 1; i++)
 773         {
 774                 int ch = read_c(env);
 775                 if(ch == EOF)
 776                 {
 777                         printf("Unexpected end of quoted string!\n");
 778                         exit(1);
 779                 }
 780                 if(ch == '\"') break;
 781
 782                 buf[i] = ch;
 783         }
 784         if(i == bufsize - 1)
 785         {
 786                 printf("Quoted string too long!\n");
 787                 exit(1);
 788         }
 789         buf[i] = 0;
 790         return buf;
 791 }
 792
 793 static long read_long2(io_env_t *env, char **endptr)
 794 {
 795         static char buf[1024];
 796         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 797 }
 798
 799 static long read_long(io_env_t *env)
 800 {
 801         return read_long2(env, NULL);
 802 }
 803
 804 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 805 {
 806         ir_node *node = (ir_node *) get_id(env, nodenr);
 807         if(node && node->kind != k_ir_node)
 808         {
 809                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 810         }
 811         return node;
 812 }
 813
 814 static ir_node *get_node(io_env_t *env, long nodenr)
 815 {
 816         ir_node *node = get_node_or_null(env, nodenr);
 817         if(!node)
 818                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 819
 820         return node;
 821 }
 822
 823 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 824 {
 825         ir_node *node = get_node_or_null(env, nodenr);
 826         if(!node)
 827         {
 828                 node = new_Dummy(mode_X);
 829                 set_id(env, nodenr, node);
 830         }
 831         return node;
 832 }
 833
 834 static ir_type *get_type(io_env_t *env, long typenr)
 835 {
 836         ir_type *type = (ir_type *) get_id(env, typenr);
 837         if(!type)
 838         {
 839                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 840         }
 841         else if(type->kind != k_type)
 842         {
 843                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 844         }
 845         return type;
 846 }
 847
 848 static ir_type *read_type(io_env_t *env)
 849 {
 850         return get_type(env, read_long(env));
 851 }
 852
 853 static ir_entity *get_entity(io_env_t *env, long entnr)
 854 {
 855         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 856         if(!entity)
 857         {
 858                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 859                 exit(1);
 860         }
 861         else if(entity->kind != k_entity)
 862         {
 863                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 864         }
 865         return entity;
 866 }
 867
 868 static ir_entity *read_entity(io_env_t *env)
 869 {
 870         return get_entity(env, read_long(env));
 871 }
 872
 873 static ir_mode *read_mode(io_env_t *env)
 874 {
 875         static char buf[128];
 876         int i, n;
 877
 878         read_str_to(env, buf, sizeof(buf));
 879
 880         n = get_irp_n_modes();
 881         for(i = 0; i < n; i++)
 882         {
 883                 ir_mode *mode = get_irp_mode(i);
 884                 if(!strcmp(buf, get_mode_name(mode)))
 885                         return mode;
 886         }
 887
 888         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 889         return mode_ANY;
 890 }
 891
 892 static const char *get_typetag_name(typetag_t typetag)
 893 {
 894         switch(typetag)
 895         {
 896                 case tt_align:       return "align";
 897                 case tt_allocation:  return "allocation";
 898                 case tt_builtin:     return "builtin kind";
 899                 case tt_initializer: return "initializer kind";
 900                 case tt_iro:         return "opcode";
 901                 case tt_peculiarity: return "peculiarity";
 902                 case tt_pin_state:   return "pin state";
 903                 case tt_tpo:         return "type";
 904                 case tt_type_state:  return "type state";
 905                 case tt_variability: return "variability";
 906                 case tt_visibility:  return "visibility";
 907                 case tt_volatility:  return "volatility";
 908                 default: return "<UNKNOWN>";
 909         }
 910 }
 911
 912 /**
 913  * Read and decode an enum constant.
 914  */
 915 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 916 {
 917         static char buf[128];
 918         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 919         if(code != SYMERROR)
 920                 return code;
 921
 922         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 923         return 0;
 924 }
 925
 926 #define read_align(env)            ((ir_align)              read_enum(env, tt_align))
 927 #define read_allocation(env)       ((ir_allocation)         read_enum(env, tt_allocation))
 928 #define read_peculiarity(env)      ((ir_peculiarity)        read_enum(env, tt_peculiarity))
 929 #define read_pin_state(env)        ((op_pin_state)          read_enum(env, tt_pin_state))
 930 #define read_type_state(env)       ((ir_type_state)         read_enum(env, tt_type_state))
 931 #define read_variability(env)      ((ir_variability)        read_enum(env, tt_variability))
 932 #define read_visibility(env)       ((ir_visibility)         read_enum(env, tt_visibility))
 933 #define read_volatility(env)       ((ir_volatility)         read_enum(env, tt_volatility))
 934 #define read_initializer_kind(env) ((ir_initializer_kind_t) read_enum(env, tt_initializer))
 935 #define read_builtin_kind(env)     ((ir_builtin_kind)       read_enum(env, tt_builtin))
 936
 937 static ir_cons_flags get_cons_flags(io_env_t *env)
 938 {
 939         ir_cons_flags flags = cons_none;
 940
 941         op_pin_state pinstate = read_pin_state(env);
 942         switch(pinstate)
 943         {
 944                 case op_pin_state_floats: flags |= cons_floats; break;
 945                 case op_pin_state_pinned: break;
 946                 default:
 947                         panic("Error in %i:%i: Invalid pinstate: %s", env->line, env->col, get_op_pin_state_name(pinstate));
 948         }
 949
 950         if(read_volatility(env) == volatility_is_volatile) flags |= cons_volatile;
 951         if(read_align(env) == align_non_aligned) flags |= cons_unaligned;
 952
 953         return flags;
 954 }
 955
 956 static tarval *read_tv(io_env_t *env)
 957 {
 958         static char buf[128];
 959         ir_mode *tvmode = read_mode(env);
 960         read_str_to(env, buf, sizeof(buf));
 961         return new_tarval_from_str(buf, strlen(buf), tvmode);
 962 }
 963
 964 static ir_initializer_t *read_initializer(io_env_t *env)
 965 {
 966         FILE *f = env->file;
 967         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
 968
 969         switch(ini_kind)
 970         {
 971                 case IR_INITIALIZER_CONST:
 972                 {
 973                         ir_node *irn = get_node_or_dummy(env, read_long(env));
 974                         return create_initializer_const(irn);
 975                 }
 976
 977                 case IR_INITIALIZER_TARVAL:
 978                         return create_initializer_tarval(read_tv(env));
 979
 980                 case IR_INITIALIZER_NULL:
 981                         return get_initializer_null();
 982
 983                 case IR_INITIALIZER_COMPOUND:
 984                 {
 985                         unsigned i, n = (unsigned) read_long(env);
 986                         ir_initializer_t *ini = create_initializer_compound(n);
 987                         for(i = 0; i < n; i++)
 988                         {
 989                                 ir_initializer_t *curini = read_initializer(env);
 990                                 set_initializer_compound_value(ini, i, curini);
 991                         }
 992                         return ini;
 993                 }
 994
 995                 default:
 996                         panic("Unknown initializer kind");
 997         }
 998 }
 999
1000
1001 /** Reads a type description and remembers it by its id. */
1002 static void import_type(io_env_t *env, keyword_t kwkind)
1003 {
1004         char           buf[1024];
1005         int            i;
1006         ir_type       *type;
1007         long           typenr = read_long(env);
1008         const char    *tpop   = read_str(env);
1009         const char    *name   = read_qstr_to(env, buf, sizeof(buf));
1010         unsigned       size   = (unsigned) read_long(env);
1011         unsigned       align  = (unsigned) read_long(env);
1012         ir_type_state  state  = read_type_state(env);
1013         ir_visibility  vis    = read_visibility(env);
1014
1015         ident         *id     = new_id_from_str(name);
1016
1017         const char    *kindstr;
1018
1019         if(kwkind == kw_frametype)
1020         {
1021                 if(symbol(tpop, tt_tpo) != tpo_class)
1022                 {
1023                         printf("Frame type must be a class type in line %i:%i\n", env->line, env->col);
1024                         skip_to(env, '\n');
1025                         return;
1026                 }
1027
1028                 type = new_type_frame(id);
1029                 set_type_size_bytes(type, size);
1030
1031                 kindstr = "frametype";
1032         }
1033         else if(kwkind == kw_valuetype)
1034         {
1035                 if(symbol(tpop, tt_tpo) != tpo_struct)
1036                 {
1037                         printf("Value type must be a struct type in line %i:%i\n", env->line, env->col);
1038                         skip_to(env, '\n');
1039                         return;
1040                 }
1041
1042                 type = new_type_value(id);
1043                 set_type_size_bytes(type, size);
1044
1045                 kindstr = "valuetype";
1046         }
1047         else
1048         {
1049                 switch(symbol(tpop, tt_tpo))
1050                 {
1051                         case tpo_array:
1052                         {
1053                                 int ndims = (int) read_long(env);
1054                                 long elemtypenr = read_long(env);
1055                                 ir_type *elemtype = get_type(env, elemtypenr);
1056
1057                                 type = new_type_array(id, ndims, elemtype);
1058                                 for(i = 0; i < ndims; i++)
1059                                 {
1060                                         const char *str = read_str(env);
1061                                         if(strcmp(str, "unknown"))
1062                                         {
1063                                                 long lowerbound = strtol(str, NULL, 0);
1064                                                 set_array_lower_bound_int(type, i, lowerbound);
1065                                         }
1066                                         str = read_str(env);
1067                                         if(strcmp(str, "unknown"))
1068                                         {
1069                                                 long upperbound = strtol(str, NULL, 0);
1070                                                 set_array_upper_bound_int(type, i, upperbound);
1071                                         }
1072                                 }
1073                                 set_type_size_bytes(type, size);
1074                                 break;
1075                         }
1076
1077                         case tpo_class:
1078                                 type = new_type_class(id);
1079                                 set_type_size_bytes(type, size);
1080                                 break;
1081
1082                         case tpo_method:
1083                         {
1084                                 unsigned callingconv = (unsigned) read_long(env);
1085                                 unsigned addprops    = (unsigned) read_long(env);
1086                                 int nparams          = (int)      read_long(env);
1087                                 int nresults         = (int)      read_long(env);
1088                                 int variaindex;
1089
1090                                 type = new_type_method(id, nparams, nresults);
1091
1092                                 for(i = 0; i < nparams; i++)
1093                                 {
1094                                         long     typenr = read_long(env);
1095                                         ir_type *paramtype = get_type(env, typenr);
1096
1097                                         set_method_param_type(type, i, paramtype);
1098                                 }
1099                                 for(i = 0; i < nresults; i++)
1100                                 {
1101                                         long typenr = read_long(env);
1102                                         ir_type *restype = get_type(env, typenr);
1103
1104                                         set_method_res_type(type, i, restype);
1105                                 }
1106
1107                                 variaindex = (int) read_long(env);
1108                                 if(variaindex != -1)
1109                                 {
1110                                         set_method_variadicity(type, variadicity_variadic);
1111                                         if(variaindex != nparams)
1112                                                 set_method_first_variadic_param_index(type, variaindex);
1113                                 }
1114
1115                                 set_method_calling_convention(type, callingconv);
1116                                 set_method_additional_properties(type, addprops);
1117                                 break;
1118                         }
1119
1120                         case tpo_pointer:
1121                         {
1122                                 ir_mode *mode = read_mode(env);
1123                                 ir_type *pointsto = get_type(env, read_long(env));
1124                                 type = new_type_pointer(id, pointsto, mode);
1125                                 break;
1126                         }
1127
1128                         case tpo_primitive:
1129                         {
1130                                 ir_mode *mode = read_mode(env);
1131                                 type = new_type_primitive(id, mode);
1132                                 break;
1133                         }
1134
1135                         case tpo_struct:
1136                                 type = new_type_struct(id);
1137                                 set_type_size_bytes(type, size);
1138                                 break;
1139
1140                         case tpo_union:
1141                                 type = new_type_union(id);
1142                                 set_type_size_bytes(type, size);
1143                                 break;
1144
1145                         case tpo_unknown:
1146                                 return;   // ignore unknown type
1147
1148                         default:
1149                                 if(typenr != 0)  // ignore global type
1150                                         printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
1151                                 skip_to(env, '\n');
1152                                 return;
1153                 }
1154                 kindstr = "type";
1155         }
1156
1157         set_type_alignment_bytes(type, align);
1158         set_type_visibility(type, vis);
1159
1160         if(state == layout_fixed)
1161                 ARR_APP1(ir_type *, env->fixedtypes, type);
1162
1163         set_id(env, typenr, type);
1164         printf("Insert %s %s %ld\n", kindstr, name, typenr);
1165 }
1166
1167 /** Reads an entity description and remembers it by its id. */
1168 static void import_entity(io_env_t *env)
1169 {
1170         char          buf[1024], buf2[1024];
1171         long          entnr       = read_long(env);
1172         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
1173         const char   *ld_name     = read_qstr_to(env, buf2, sizeof(buf2));
1174         long          typenr      = read_long(env);
1175         long          ownertypenr = read_long(env);
1176
1177         ir_type   *type      = get_type(env, typenr);
1178         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1179         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
1180
1181         if(*ld_name) set_entity_ld_ident(entity, new_id_from_str(ld_name));
1182         set_entity_offset     (entity, (int) read_long(env));
1183         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1184         set_entity_allocation (entity, read_allocation(env));
1185         set_entity_visibility (entity, read_visibility(env));
1186         set_entity_variability(entity, read_variability(env));
1187         set_entity_peculiarity(entity, read_peculiarity(env));
1188         set_entity_volatility (entity, read_volatility(env));
1189
1190         if(get_entity_variability(entity) != variability_uninitialized
1191                 && get_entity_visibility(entity) != visibility_external_allocated)
1192         {
1193                 if(is_compound_entity(entity))
1194                 {
1195                         if(!strcmp(read_str_to(env, buf2, sizeof(buf2)), "initializer"))
1196                         {
1197                                 set_entity_initializer(entity, read_initializer(env));
1198                         }
1199                         else
1200                         {
1201                                 int i, n = (int) read_long(env);
1202                                 for(i = 0; i < n; i++)
1203                                 {
1204                                         ir_entity *member = get_entity(env, read_long(env));
1205                                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1206                                         add_compound_ent_value(entity, irn, member);
1207                                 }
1208                         }
1209                 }
1210                 else
1211                 {
1212                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1213                         set_atomic_ent_value(entity, irn);
1214                 }
1215         }
1216
1217         set_id(env, entnr, entity);
1218         printf("Insert entity %s %ld\n", name, entnr);
1219 }
1220
1221 /** Parses the whole type graph. */
1222 static int parse_typegraph(io_env_t *env)
1223 {
1224         const char *kind;
1225         lex_state_t oldstate;
1226
1227         EXPECT('{');
1228
1229         save_lex_state(env, &oldstate);
1230
1231         current_ir_graph = get_const_code_irg();
1232
1233         // parse all types first
1234         while(1)
1235         {
1236                 int isframetype = 0;
1237
1238                 kind = read_str(env);
1239                 if(kind[0] == '}' && !kind[1]) break;
1240
1241                 keyword_t kwkind = (keyword_t) symbol(kind, tt_keyword);
1242                 switch(kwkind)
1243                 {
1244                         case kw_type:
1245                         case kw_frametype:
1246                         case kw_valuetype:
1247                                 import_type(env, kwkind);
1248                                 break;
1249
1250                         default:
1251                                 skip_to(env, '\n');
1252                                 break;
1253                 }
1254         }
1255
1256         // now parse rest
1257         restore_lex_state(env, &oldstate);
1258
1259         while(1)
1260         {
1261                 kind = read_str(env);
1262                 if(kind[0] == '}' && !kind[1]) break;
1263
1264                 switch(symbol(kind, tt_keyword))
1265                 {
1266                         case kw_type:
1267                         case kw_frametype:
1268                         case kw_valuetype:
1269                                 skip_to(env, '\n');
1270                                 break;
1271
1272                         case kw_entity:
1273                                 import_entity(env);
1274                                 break;
1275
1276                         default:
1277                                 printf("Type graph element not supported yet: \"%s\"\n", kind);
1278                                 skip_to(env, '\n');
1279                                 break;
1280                 }
1281         }
1282         return 1;
1283 }
1284
1285 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
1286 {
1287         int numpreds;
1288         *nodename = read_str(env);
1289         if((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  // end-of-graph
1290
1291         *nodenr = read_long(env);
1292
1293         ARR_RESIZE(ir_node *, *preds, 0);
1294
1295         EXPECT('[');
1296         for(numpreds = 0; !feof(env->file); numpreds++)
1297         {
1298                 char *endptr;
1299                 ARR_APP1(long, *preds, read_long2(env, &endptr));
1300                 if(*endptr == ']') break;
1301         }
1302         return numpreds;
1303 }
1304
1305 /** Parses an IRG. */
1306 static int parse_graph(io_env_t *env, ir_graph *irg)
1307 {
1308         long       *preds = NEW_ARR_F(long, 16);
1309         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1310         int         i, numpreds, ret = 1;
1311         long        nodenr;
1312         const char *nodename;
1313         ir_node    *node, *newnode;
1314
1315         current_ir_graph = irg;
1316
1317         EXPECT('{');
1318
1319         while(1)
1320         {
1321                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1322                 if(numpreds == -1) break;  // end-of-graph
1323                 if(!numpreds)
1324                 {
1325                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1326                         ret = 0;
1327                         break;
1328                 }
1329
1330                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1331                 for(i = 0; i < numpreds - 1; i++)
1332                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1333
1334                 node = get_node_or_null(env, nodenr);
1335                 newnode = NULL;
1336
1337                 EXPECT('{');
1338
1339                 switch(symbol(nodename, tt_iro))
1340                 {
1341                         case iro_End:
1342                         {
1343                                 ir_node *newendblock = get_node(env, preds[0]);
1344                                 newnode = get_irg_end(current_ir_graph);
1345                                 exchange(get_nodes_block(newnode), newendblock);
1346                                 for(i = 0; i < numpreds - 1; i++)
1347                                         add_irn_n(newnode, prednodes[i]);
1348                                 break;
1349                         }
1350
1351                         case iro_Start:
1352                         {
1353                                 ir_node *newstartblock = get_node(env, preds[0]);
1354                                 newnode = get_irg_start(current_ir_graph);
1355                                 exchange(get_nodes_block(newnode), newstartblock);
1356                                 break;
1357                         }
1358
1359                         case iro_Block:
1360                         {
1361                                 if(preds[0] != nodenr)
1362                                 {
1363                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1364                                                 preds[0], nodenr);
1365                                         ret = 0;
1366                                         goto endloop;
1367                                 }
1368
1369                                 newnode = new_Block(numpreds - 1, prednodes);
1370                                 break;
1371                         }
1372
1373                         case iro_Anchor:
1374                                 newnode = current_ir_graph->anchor;
1375                                 for(i = 0; i < numpreds - 1; i++)
1376                                         set_irn_n(newnode, i, prednodes[i]);
1377                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1378                                 break;
1379
1380                         case iro_SymConst:
1381                         {
1382                                 long entnr = read_long(env);
1383                                 union symconst_symbol sym;
1384                                 sym.entity_p = get_entity(env, entnr);
1385                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1386                                 break;
1387                         }
1388
1389                         #include "gen_irio_import.inl"
1390
1391                         default:
1392                                 goto notsupported;
1393                 }
1394
1395                 EXPECT('}');
1396
1397                 if(!newnode)
1398                 {
1399 notsupported:
1400                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1401                 }
1402
1403                 if(node)
1404                         exchange(node, newnode);
1405                 /* Always update hash entry to avoid more uses of id nodes */
1406                 set_id(env, nodenr, newnode);
1407                 //printf("Insert %s %ld\n", nodename, nodenr);
1408         }
1409
1410 endloop:
1411         DEL_ARR_F(preds);
1412         DEL_ARR_F(prednodes);
1413
1414         return ret;
1415 }
1416
1417 /** Imports an previously exported textual representation of an (maybe partial) irp */
1418 void ir_import(const char *filename)
1419 {
1420         int oldoptimize = get_optimize();
1421         firm_verification_t oldver = get_node_verification_mode();
1422         io_env_t ioenv;
1423         io_env_t *env = &ioenv;
1424         int i, n;
1425
1426         symtbl_init();
1427
1428         memset(env, 0, sizeof(*env));
1429         env->idset = new_set(id_cmp, 128);
1430         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1431
1432         env->file = fopen(filename, "rt");
1433         if(!env->file)
1434         {
1435                 perror(filename);
1436                 exit(1);
1437         }
1438
1439         set_optimize(0);
1440         do_node_verification(FIRM_VERIFICATION_OFF);
1441
1442         while(1)
1443         {
1444                 const char *str = read_str(env);
1445                 if(!*str) break;
1446                 switch(symbol(str, tt_keyword))
1447                 {
1448                         case kw_typegraph:
1449                                 if(!parse_typegraph(env)) goto end;
1450                                 break;
1451
1452                         case kw_irg:
1453                         {
1454                                 ir_entity *irgent = get_entity(env, read_long(env));
1455                                 long valuetypeid;
1456                                 ir_graph *irg = new_ir_graph(irgent, 0);
1457                                 set_irg_frame_type(irg, get_type(env, read_long(env)));
1458                                 valuetypeid = read_long(env);
1459                                 if(valuetypeid != -1)
1460                                         set_method_value_param_type(get_entity_type(irgent),
1461                                                         get_type(env, valuetypeid));
1462
1463                                 if(!parse_graph(env, irg)) goto end;
1464                                 break;
1465                         }
1466
1467                         case kw_constirg:
1468                                 if(!parse_graph(env, get_const_code_irg())) goto end;
1469                                 break;
1470                 }
1471         }
1472
1473 end:
1474         n = ARR_LEN(env->fixedtypes);
1475         for(i = 0; i < n; i++)
1476                 set_type_state(env->fixedtypes[i], layout_fixed);
1477
1478         DEL_ARR_F(env->fixedtypes);
1479
1480         del_set(env->idset);
1481
1482         irp_finalize_cons();
1483
1484         do_node_verification(oldver);
1485         set_optimize(oldoptimize);
1486
1487         fclose(env->file);
1488 }