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_cond_kind,
  67         tt_cond_jmp_predicate,
  68         tt_initializer,
  69         tt_iro,
  70         tt_keyword,
  71         tt_mode_arithmetic,
  72         tt_peculiarity,
  73         tt_pin_state,
  74         tt_tpo,
  75         tt_type_state,
  76         tt_variability,
  77         tt_visibility,
  78         tt_volatility
  79 } typetag_t;
  80
  81 typedef enum keyword_t
  82 {
  83         kw_constirg,
  84         kw_entity,
  85         kw_frametype,
  86         kw_irg,
  87         kw_mode,
  88         kw_modes,
  89         kw_valuetype,
  90         kw_type,
  91         kw_typegraph
  92 } keyword_t;
  93
  94 typedef struct symbol_t
  95 {
  96         const char *str;      /**< The name of this symbol. */
  97         typetag_t   typetag;  /**< The type tag of this symbol. */
  98         unsigned    code;     /**< The value of this symbol. */
  99 } symbol_t;
 100
 101 typedef struct id_entry
 102 {
 103         long id;
 104         void *elem;
 105 } id_entry;
 106
 107 /** The symbol table, a set of symbol_t elements. */
 108 static set *symtbl;
 109
 110
 111 /**
 112  * Calculate a hash value for a string.
 113  */
 114 static unsigned string_hash(const char *str, int len)
 115 {
 116         return str[0] * 27893 ^ str[len-1] * 81 ^ str[len >> 1];
 117 }
 118
 119 /**
 120  * Compare two symbol table entries.
 121  */
 122 static int symbol_cmp(const void *elt, const void *key, size_t size)
 123 {
 124         int res;
 125         const symbol_t *entry = (const symbol_t *) elt;
 126         const symbol_t *keyentry = (const symbol_t *) key;
 127         (void) size;
 128         res = entry->typetag - keyentry->typetag;
 129         if (res) return res;
 130         return strcmp(entry->str, keyentry->str);
 131 }
 132
 133 static int id_cmp(const void *elt, const void *key, size_t size)
 134 {
 135         const id_entry *entry = (const id_entry *) elt;
 136         const id_entry *keyentry = (const id_entry *) key;
 137         (void) size;
 138         return entry->id - keyentry->id;
 139 }
 140
 141 /** Initializes the symbol table. May be called more than once without problems. */
 142 static void symtbl_init(void)
 143 {
 144         symbol_t key;
 145
 146         /* Only initialize once */
 147         if (symtbl != NULL)
 148                 return;
 149
 150         symtbl = new_set(symbol_cmp, 256);
 151
 152 #define INSERT(s, tt, cod)                                       \
 153         key.str = (s);                                               \
 154         key.typetag = (tt);                                          \
 155         key.code = (cod);                                            \
 156         set_insert(symtbl, &key, sizeof(key), string_hash(s, sizeof(s)-1) + tt * 17)
 157
 158 #define INSERTENUM(tt, e) INSERT(#e, tt, e)
 159 #define INSERTKEYWORD(k) INSERT(#k, tt_keyword, kw_##k)
 160
 161         INSERT("array", tt_tpo, tpo_array);
 162         INSERT("class", tt_tpo, tpo_class);
 163         INSERT("method", tt_tpo, tpo_method);
 164         INSERT("pointer", tt_tpo, tpo_pointer);
 165         INSERT("primitive", tt_tpo, tpo_primitive);
 166         INSERT("struct", tt_tpo, tpo_struct);
 167         INSERT("union", tt_tpo, tpo_union);
 168         INSERT("Unknown", tt_tpo, tpo_unknown);
 169
 170         INSERTKEYWORD(constirg);
 171         INSERTKEYWORD(entity);
 172         INSERTKEYWORD(frametype);
 173         INSERTKEYWORD(irg);
 174         INSERTKEYWORD(mode);
 175         INSERTKEYWORD(modes);
 176         INSERTKEYWORD(valuetype);
 177         INSERTKEYWORD(type);
 178         INSERTKEYWORD(typegraph);
 179
 180 #include "gen_irio_lex.inl"
 181
 182         INSERTENUM(tt_align, align_non_aligned);
 183         INSERTENUM(tt_align, align_is_aligned);
 184
 185         INSERTENUM(tt_allocation, allocation_automatic);
 186         INSERTENUM(tt_allocation, allocation_parameter);
 187         INSERTENUM(tt_allocation, allocation_dynamic);
 188         INSERTENUM(tt_allocation, allocation_static);
 189
 190         INSERTENUM(tt_builtin, ir_bk_trap);
 191         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 192         INSERTENUM(tt_builtin, ir_bk_return_address);
 193         INSERTENUM(tt_builtin, ir_bk_frame_addess);
 194         INSERTENUM(tt_builtin, ir_bk_prefetch);
 195         INSERTENUM(tt_builtin, ir_bk_ffs);
 196         INSERTENUM(tt_builtin, ir_bk_clz);
 197         INSERTENUM(tt_builtin, ir_bk_ctz);
 198         INSERTENUM(tt_builtin, ir_bk_popcount);
 199         INSERTENUM(tt_builtin, ir_bk_parity);
 200         INSERTENUM(tt_builtin, ir_bk_bswap);
 201         INSERTENUM(tt_builtin, ir_bk_inport);
 202         INSERTENUM(tt_builtin, ir_bk_outport);
 203         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 204
 205         INSERTENUM(tt_cond_kind, dense);
 206         INSERTENUM(tt_cond_kind, fragmentary);
 207
 208         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 209         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 210         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 211
 212         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 213         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 214         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 215         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 216
 217         INSERTENUM(tt_mode_arithmetic, irma_uninitialized);
 218         INSERTENUM(tt_mode_arithmetic, irma_none);
 219         INSERTENUM(tt_mode_arithmetic, irma_twos_complement);
 220         INSERTENUM(tt_mode_arithmetic, irma_ones_complement);
 221         INSERTENUM(tt_mode_arithmetic, irma_int_BCD);
 222         INSERTENUM(tt_mode_arithmetic, irma_ieee754);
 223         INSERTENUM(tt_mode_arithmetic, irma_float_BCD);
 224
 225         INSERTENUM(tt_peculiarity, peculiarity_description);
 226         INSERTENUM(tt_peculiarity, peculiarity_inherited);
 227         INSERTENUM(tt_peculiarity, peculiarity_existent);
 228
 229         INSERTENUM(tt_pin_state, op_pin_state_floats);
 230         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 231         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 232         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 233
 234         INSERTENUM(tt_type_state, layout_undefined);
 235         INSERTENUM(tt_type_state, layout_fixed);
 236
 237         INSERTENUM(tt_variability, variability_uninitialized);
 238         INSERTENUM(tt_variability, variability_initialized);
 239         INSERTENUM(tt_variability, variability_part_constant);
 240         INSERTENUM(tt_variability, variability_constant);
 241
 242         INSERTENUM(tt_visibility, visibility_local);
 243         INSERTENUM(tt_visibility, visibility_external_visible);
 244         INSERTENUM(tt_visibility, visibility_external_allocated);
 245
 246         INSERTENUM(tt_volatility, volatility_non_volatile);
 247         INSERTENUM(tt_volatility, volatility_is_volatile);
 248
 249 #undef INSERTKEYWORD
 250 #undef INSERTENUM
 251 #undef INSERT
 252 }
 253
 254 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 255 static unsigned symbol(const char *str, typetag_t typetag)
 256 {
 257         symbol_t key, *entry;
 258
 259         key.str = str;
 260         key.typetag = typetag;
 261
 262         entry = set_find(symtbl, &key, sizeof(key), string_hash(str, strlen(str)) + typetag * 17);
 263         return entry ? entry->code : SYMERROR;
 264 }
 265
 266 static void *get_id(io_env_t *env, long id)
 267 {
 268         id_entry key, *entry;
 269         key.id = id;
 270
 271         entry = set_find(env->idset, &key, sizeof(key), (unsigned) id);
 272         return entry ? entry->elem : NULL;
 273 }
 274
 275 static void set_id(io_env_t *env, long id, void *elem)
 276 {
 277         id_entry key;
 278         key.id = id;
 279         key.elem = elem;
 280         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 281 }
 282
 283 static void write_mode(io_env_t *env, ir_mode *mode)
 284 {
 285         fputs(get_mode_name(mode), env->file);
 286         fputc(' ', env->file);
 287 }
 288
 289 static void write_tarval(io_env_t *env, tarval *tv)
 290 {
 291         char buf[1024];
 292         write_mode(env, get_tarval_mode(tv));
 293         tarval_snprintf(buf, sizeof(buf), tv);
 294         fputs(buf, env->file);
 295         fputc(' ', env->file);
 296 }
 297
 298 static void write_align(io_env_t *env, ir_node *irn)
 299 {
 300         ir_align align;
 301
 302         if (is_Load(irn))
 303                 align = get_Load_align(irn);
 304         else if (is_Store(irn))
 305                 align = get_Store_align(irn);
 306         else
 307                 panic("Invalid optype for write_align");
 308
 309         fputs(get_align_name(align), env->file);
 310         fputc(' ', env->file);
 311 }
 312
 313 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 314 {
 315         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 316         fputc(' ', env->file);
 317 }
 318
 319 static void write_cond_kind(io_env_t *env, ir_node *irn)
 320 {
 321         fputs(get_cond_kind_name(get_Cond_kind(irn)), env->file);
 322         fputc(' ', env->file);
 323 }
 324
 325 static void write_cond_jmp_predicate(io_env_t *env, ir_node *irn)
 326 {
 327         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(irn)), env->file);
 328         fputc(' ', env->file);
 329 }
 330
 331 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 332 {
 333         FILE *f = env->file;
 334         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 335
 336         fputs(get_initializer_kind_name(ini_kind), f);
 337         fputc(' ', f);
 338
 339         switch (ini_kind)
 340         {
 341                 case IR_INITIALIZER_CONST:
 342                         fprintf(f, "%ld ", get_irn_node_nr(get_initializer_const_value(ini)));
 343                         break;
 344
 345                 case IR_INITIALIZER_TARVAL:
 346                         write_tarval(env, get_initializer_tarval_value(ini));
 347                         break;
 348
 349                 case IR_INITIALIZER_NULL:
 350                         break;
 351
 352                 case IR_INITIALIZER_COMPOUND:
 353                 {
 354                         unsigned i, n = get_initializer_compound_n_entries(ini);
 355                         fprintf(f, "%d ", n);
 356                         for (i = 0; i < n; i++)
 357                                 write_initializer(env, get_initializer_compound_value(ini, i));
 358                         break;
 359                 }
 360
 361                 default:
 362                         panic("Unknown initializer kind");
 363         }
 364 }
 365
 366 static void write_pin_state(io_env_t *env, ir_node *irn)
 367 {
 368         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 369         fputc(' ', env->file);
 370 }
 371
 372 static void write_volatility(io_env_t *env, ir_node *irn)
 373 {
 374         ir_volatility vol;
 375
 376         if (is_Load(irn))
 377                 vol = get_Load_volatility(irn);
 378         else if (is_Store(irn))
 379                 vol = get_Store_volatility(irn);
 380         else
 381                 panic("Invalid optype for write_volatility");
 382
 383         fputs(get_volatility_name(vol), env->file);
 384         fputc(' ', env->file);
 385 }
 386
 387 static void export_type_common(io_env_t *env, ir_type *tp)
 388 {
 389         fprintf(env->file, "\t%s %ld %s \"%s\" %u %u %s %s ",
 390                         is_frame_type(tp) ? "frametype" : is_value_param_type(tp) ? "valuetype" : "type",
 391                         get_type_nr(tp),
 392                         get_type_tpop_name(tp),
 393                         get_type_name(tp),
 394                         get_type_size_bytes(tp),
 395                         get_type_alignment_bytes(tp),
 396                         get_type_state_name(get_type_state(tp)),
 397                         get_visibility_name(get_type_visibility(tp)));
 398 }
 399
 400 static void export_type_pre(io_env_t *env, ir_type *tp)
 401 {
 402         FILE *f = env->file;
 403
 404         /* skip types to be handled by post walker */
 405         switch (get_type_tpop_code(tp))
 406         {
 407                 case tpo_array:
 408                 case tpo_method:
 409                 case tpo_pointer:
 410                         return;
 411         }
 412
 413         export_type_common(env, tp);
 414
 415         switch (get_type_tpop_code(tp))
 416         {
 417                 case tpo_class:
 418                         /* TODO: inheritance stuff not supported yet */
 419                         printf("Inheritance of classes not supported yet!\n");
 420                         break;
 421
 422                 case tpo_primitive:
 423                         write_mode(env, get_type_mode(tp));
 424                         break;
 425
 426                 case tpo_struct:
 427                         break;
 428
 429                 case tpo_union:
 430                         break;
 431
 432                 case tpo_unknown:
 433                         break;
 434
 435                 default:
 436                         printf("export_type_pre: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 437                         break;
 438         }
 439         fputc('\n', f);
 440 }
 441
 442 static void export_type_post(io_env_t *env, ir_type *tp)
 443 {
 444         FILE *f = env->file;
 445         int i, n, nparams, nresults;
 446
 447         /* skip types already handled by pre walker */
 448         switch (get_type_tpop_code(tp))
 449         {
 450                 case tpo_class:
 451                 case tpo_primitive:
 452                 case tpo_struct:
 453                 case tpo_union:
 454                 case tpo_unknown:
 455                         return;
 456         }
 457
 458         export_type_common(env, tp);
 459
 460         switch (get_type_tpop_code(tp))
 461         {
 462                 case tpo_array:
 463                         n = get_array_n_dimensions(tp);
 464                         fprintf(f, "%i %ld ", n, get_type_nr(get_array_element_type(tp)));
 465                         for (i = 0; i < n; i++) {
 466                                 ir_node *lower = get_array_lower_bound(tp, i);
 467                                 ir_node *upper = get_array_upper_bound(tp, i);
 468
 469                                 if (is_Const(lower))
 470                                         fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(lower)));
 471                                 else
 472                                         panic("Lower array bound is not constant");
 473
 474                                 if (is_Const(upper))
 475                                         fprintf(f, "%ld ", get_tarval_long(get_Const_tarval(upper)));
 476                                 else if (is_Unknown(upper))
 477                                         fputs("unknown ", f);
 478                                 else
 479                                         panic("Upper array bound is not constant");
 480                         }
 481                         break;
 482
 483                 case tpo_method:
 484                         nparams  = get_method_n_params(tp);
 485                         nresults = get_method_n_ress(tp);
 486                         fprintf(f, "0x%X 0x%X %i %i ", get_method_calling_convention(tp),
 487                                 get_method_additional_properties(tp), nparams, nresults);
 488                         for (i = 0; i < nparams; i++)
 489                                 fprintf(f, "%ld ", get_type_nr(get_method_param_type(tp, i)));
 490                         for (i = 0; i < nresults; i++)
 491                                 fprintf(f, "%ld ", get_type_nr(get_method_res_type(tp, i)));
 492                         fprintf(f, "%d ", get_method_first_variadic_param_index(tp));
 493                         break;
 494
 495                 case tpo_pointer:
 496                         write_mode(env, get_type_mode(tp));
 497                         fprintf(f, "%ld ", get_type_nr(get_pointer_points_to_type(tp)));
 498                         break;
 499
 500                 default:
 501                         printf("export_type: Unknown type code \"%s\".\n", get_type_tpop_name(tp));
 502                         break;
 503         }
 504         fputc('\n', f);
 505 }
 506
 507 static void export_entity(io_env_t *env, ir_entity *ent)
 508 {
 509         ir_type *owner = get_entity_owner(ent);
 510         fprintf(env->file, "\tentity %ld \"%s\" \"%s\" %ld %ld %d %u %s %s %s %s %s ",
 511                         get_entity_nr(ent),
 512                         get_entity_name(ent),
 513                         ent->ld_name ? get_id_str(ent->ld_name) : "",
 514                         get_type_nr(get_entity_type(ent)),
 515                         get_type_nr(owner),
 516                         get_entity_offset(ent),
 517                         (unsigned) get_entity_offset_bits_remainder(ent),
 518                         get_allocation_name(get_entity_allocation(ent)),
 519                         get_visibility_name(get_entity_visibility(ent)),
 520                         get_variability_name(get_entity_variability(ent)),
 521                         get_peculiarity_name(get_entity_peculiarity(ent)),
 522                         get_volatility_name(get_entity_volatility(ent)));
 523
 524         /* TODO: inheritance stuff for class entities not supported yet */
 525         if (is_Class_type(owner) && owner != get_glob_type())
 526                 printf("Inheritance of class entities not supported yet!\n");
 527
 528         if (get_entity_variability(ent) != variability_uninitialized &&
 529             get_entity_visibility(ent) != visibility_external_allocated)
 530         {
 531                 if (is_compound_entity(ent)) {
 532                         if (has_entity_initializer(ent)) {
 533                                 fputs("initializer ", env->file);
 534                                 write_initializer(env, get_entity_initializer(ent));
 535                         } else {
 536                                 int i, n = get_compound_ent_n_values(ent);
 537                                 fputs("noninitializer ", env->file);
 538                                 fprintf(env->file, "%d ", n);
 539                                 for (i = 0; i < n; i++) {
 540                                         ir_entity *member = get_compound_ent_value_member(ent, i);
 541                                         ir_node   *irn    = get_compound_ent_value(ent, i);
 542                                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 543                                 }
 544                         }
 545                 } else {
 546                         ir_node *irn = get_atomic_ent_value(ent);
 547                         fprintf(env->file, "%ld ", get_irn_node_nr(irn));
 548                 }
 549         }
 550
 551         fputc('\n', env->file);
 552 }
 553
 554 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 555 {
 556         io_env_t *env = (io_env_t *) ctx;
 557         if (get_kind(tore.typ) == k_type)
 558                 export_type_pre(env, tore.typ);
 559 }
 560
 561 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 562 {
 563         io_env_t *env = (io_env_t *) ctx;
 564
 565         switch (get_kind(tore.ent))
 566         {
 567                 case k_entity:
 568                         export_entity(env, tore.ent);
 569                         break;
 570
 571                 case k_type:
 572                         export_type_post(env, tore.typ);
 573                         break;
 574
 575                 default:
 576                         panic("export_type_or_ent_post: Unknown type or entity.");
 577                         break;
 578         }
 579 }
 580
 581 static void export_node(ir_node *irn, void *ctx)
 582 {
 583         io_env_t *env = (io_env_t *) ctx;
 584         int i, n;
 585         unsigned opcode = get_irn_opcode(irn);
 586
 587         if (env->ignoreblocks && opcode == iro_Block)
 588                 return;
 589
 590         n = get_irn_arity(irn);
 591
 592         fprintf(env->file, "\t%s %ld [ ", get_irn_opname(irn), get_irn_node_nr(irn));
 593
 594         for (i = -1; i < n; i++) {
 595                 ir_node *pred = get_irn_n(irn, i);
 596                 if (pred == NULL) {
 597                         /* Anchor node may have NULL predecessors */
 598                         assert(is_Anchor(irn));
 599                         fputs("-1 ", env->file);
 600                 } else {
 601                         fprintf(env->file, "%ld ", get_irn_node_nr(pred));
 602                 }
 603         }
 604
 605         fprintf(env->file, "] { ");
 606
 607         switch (opcode)
 608         {
 609                 #include "gen_irio_export.inl"
 610         }
 611         fputs("}\n", env->file);
 612 }
 613
 614 static void export_modes(io_env_t *env)
 615 {
 616         int i, n_modes = get_irp_n_modes();
 617
 618         fputs("modes {\n", env->file);
 619
 620         for (i = 0; i < n_modes; i++) {
 621                 ir_mode *mode = get_irp_mode(i);
 622                 switch (get_mode_sort(mode))
 623                 {
 624                         case irms_auxiliary:
 625                         case irms_control_flow:
 626                         case irms_memory:
 627                         case irms_internal_boolean:
 628                                 /* skip "internal" modes, which may not be user defined */
 629                                 continue;
 630                 }
 631
 632                 fprintf(env->file, "\tmode \"%s\" 0x%X %d %d %s %d %d ", get_mode_name(mode),
 633                         get_mode_sort(mode), get_mode_size_bits(mode), get_mode_sign(mode),
 634                         get_mode_arithmetic_name(get_mode_arithmetic(mode)), get_mode_modulo_shift(mode),
 635                         get_mode_n_vector_elems(mode));
 636                 if (mode_is_reference(mode)) {
 637                         write_mode(env, get_reference_mode_signed_eq(mode));
 638                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 639                 }
 640                 fputc('\n', env->file);
 641         }
 642
 643         fputs("}\n\n", env->file);
 644 }
 645
 646 /** Exports the whole irp to the given file in a textual form. */
 647 void ir_export(const char *filename)
 648 {
 649         io_env_t env;
 650         int i, n_irgs = get_irp_n_irgs();
 651
 652         env.file = fopen(filename, "wt");
 653         if (!env.file) {
 654                 perror(filename);
 655                 return;
 656         }
 657
 658         export_modes(&env);
 659
 660         fputs("typegraph {\n", env.file);
 661
 662         type_walk_plus_frames(export_type_or_ent_pre, export_type_or_ent_post, &env);
 663         /* TODO: Visit frame types and "types for value params"? */
 664
 665         for (i = 0; i < n_irgs; i++) {
 666                 ir_graph *irg = get_irp_irg(i);
 667                 ir_type *valuetype = get_irg_value_param_type(irg);
 668
 669                 fprintf(env.file, "}\n\nirg %ld %ld %ld {\n", get_entity_nr(get_irg_entity(irg)),
 670                         get_type_nr(get_irg_frame_type(irg)),
 671                         valuetype == NULL ? -1 : get_type_nr(valuetype));
 672
 673                 env.ignoreblocks = 0;
 674                 irg_block_walk_graph(irg, NULL, export_node, &env);
 675
 676                 env.ignoreblocks = 1;
 677                 irg_walk_anchors(irg, NULL, export_node, &env);
 678         }
 679
 680         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 681
 682         walk_const_code(NULL, export_node, &env);
 683         fputs("}\n", env.file);
 684
 685         fclose(env.file);
 686 }
 687
 688 /** Exports the given irg to the given file. */
 689 void ir_export_irg(ir_graph *irg, const char *filename)
 690 {
 691         io_env_t env;
 692
 693         env.file = fopen(filename, "wt");
 694         if (!env.file) {
 695                 perror(filename);
 696                 return;
 697         }
 698
 699         export_modes(&env);
 700
 701         fputs("typegraph {\n", env.file);
 702
 703         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 704
 705         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 706
 707         env.ignoreblocks = 0;
 708         irg_block_walk_graph(irg, NULL, export_node, &env);
 709
 710         env.ignoreblocks = 1;
 711         irg_walk_anchors(irg, NULL, export_node, &env);
 712
 713         /* TODO: Only output needed constants */
 714         fputs("}\n\nconstirg {\n", env.file);
 715         walk_const_code(NULL, export_node, &env);
 716         fputs("}\n", env.file);
 717
 718         fclose(env.file);
 719 }
 720
 721 static void save_lex_state(io_env_t *env, lex_state_t *state)
 722 {
 723         state->offs = ftell(env->file);
 724         state->line = env->line;
 725         state->col  = env->col;
 726 }
 727
 728 static void restore_lex_state(io_env_t *env, lex_state_t *state)
 729 {
 730         fseek(env->file, state->offs, SEEK_SET);
 731         env->line = state->line;
 732         env->col  = state->col;
 733 }
 734
 735 static int read_c(io_env_t *env)
 736 {
 737         int ch = fgetc(env->file);
 738         switch (ch)
 739         {
 740                 case '\t':
 741                         env->col += 4;
 742                         break;
 743
 744                 case '\n':
 745                         env->col = 0;
 746                         env->line++;
 747                         break;
 748
 749                 default:
 750                         env->col++;
 751                         break;
 752         }
 753         return ch;
 754 }
 755
 756 /** Returns the first non-whitespace character or EOF. **/
 757 static int skip_ws(io_env_t *env)
 758 {
 759         while (1)
 760         {
 761                 int ch = read_c(env);
 762                 switch (ch)
 763                 {
 764                         case ' ':
 765                         case '\t':
 766                         case '\n':
 767                         case '\r':
 768                                 break;
 769
 770                         default:
 771                                 return ch;
 772                 }
 773         }
 774 }
 775
 776 static void skip_to(io_env_t *env, char to_ch)
 777 {
 778         int ch;
 779         do
 780                 ch = read_c(env);
 781         while (ch != to_ch && ch != EOF);
 782 }
 783
 784 static int expect_char(io_env_t *env, char ch)
 785 {
 786         int curch = skip_ws(env);
 787         if (curch != ch) {
 788                 printf("Unexpected char '%c', expected '%c' in line %i:%i\n", curch, ch, env->line, env->col);
 789                 return 0;
 790         }
 791         return 1;
 792 }
 793
 794 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
 795 #define EXPECT_OR_EXIT(c) if (expect_char(env, (c))) {} else exit(1)
 796
 797 inline static const char *read_str_to(io_env_t *env, char *buf, size_t bufsize)
 798 {
 799         size_t i;
 800         for (i = 0; i < bufsize - 1; i++) {
 801                 int ch = read_c(env);
 802                 if (ch == EOF) break;
 803                 switch (ch)
 804                 {
 805                         case ' ':
 806                         case '\t':
 807                         case '\n':
 808                         case '\r':
 809                                 if (i != 0)
 810                                         goto endofword;
 811                                 i--;    /* skip whitespace */
 812                                 break;
 813
 814                         default:
 815                                 buf[i] = ch;
 816                                 break;
 817                 }
 818         }
 819 endofword:
 820         buf[i] = 0;
 821         return buf;
 822 }
 823
 824 static const char *read_str(io_env_t *env)
 825 {
 826         static char buf[1024];
 827         return read_str_to(env, buf, sizeof(buf));
 828 }
 829
 830 static const char *read_qstr_to(io_env_t *env, char *buf, size_t bufsize)
 831 {
 832         size_t i;
 833         EXPECT_OR_EXIT('\"');
 834         for (i = 0; i < bufsize - 1; i++) {
 835                 int ch = read_c(env);
 836                 if (ch == EOF) {
 837                         printf("Unexpected end of quoted string!\n");
 838                         exit(1);
 839                 }
 840                 if (ch == '\"') break;
 841
 842                 buf[i] = ch;
 843         }
 844         if (i == bufsize - 1) {
 845                 printf("Quoted string too long!\n");
 846                 exit(1);
 847         }
 848         buf[i] = 0;
 849         return buf;
 850 }
 851
 852 static const char *read_qstr(io_env_t *env)
 853 {
 854         static char buf[1024];
 855         return read_qstr_to(env, buf, sizeof(buf));
 856 }
 857
 858 static long read_long2(io_env_t *env, char **endptr)
 859 {
 860         static char buf[1024];
 861         return strtol(read_str_to(env, buf, sizeof(buf)), endptr, 0);
 862 }
 863
 864 static long read_long(io_env_t *env)
 865 {
 866         return read_long2(env, NULL);
 867 }
 868
 869 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
 870 {
 871         ir_node *node = (ir_node *) get_id(env, nodenr);
 872         if (node && node->kind != k_ir_node)
 873                 panic("Irn ID %ld collides with something else in line %i:%i\n", nodenr, env->line, env->col);
 874         return node;
 875 }
 876
 877 static ir_node *get_node(io_env_t *env, long nodenr)
 878 {
 879         ir_node *node = get_node_or_null(env, nodenr);
 880         if (!node)
 881                 panic("Unknown node: %ld in line %i:%i\n", nodenr, env->line, env->col);
 882
 883         return node;
 884 }
 885
 886 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
 887 {
 888         ir_node *node = get_node_or_null(env, nodenr);
 889         if (node == NULL) {
 890                 node = new_Dummy(mode_X);
 891                 set_id(env, nodenr, node);
 892         }
 893         return node;
 894 }
 895
 896 static ir_type *get_type(io_env_t *env, long typenr)
 897 {
 898         ir_type *type = (ir_type *) get_id(env, typenr);
 899         if (type == NULL)
 900                 panic("Unknown type: %ld in line %i:%i\n", typenr, env->line, env->col);
 901         else if (type->kind != k_type)
 902                 panic("Type ID %ld collides with something else in line %i:%i\n", typenr, env->line, env->col);
 903         return type;
 904 }
 905
 906 static ir_type *read_type(io_env_t *env)
 907 {
 908         return get_type(env, read_long(env));
 909 }
 910
 911 static ir_entity *get_entity(io_env_t *env, long entnr)
 912 {
 913         ir_entity *entity = (ir_entity *) get_id(env, entnr);
 914         if (entity == NULL) {
 915                 printf("Unknown entity: %ld in line %i:%i\n", entnr, env->line, env->col);
 916                 exit(1);
 917         } else if (entity->kind != k_entity)
 918                 panic("Entity ID %ld collides with something else in line %i:%i\n", entnr, env->line, env->col);
 919         return entity;
 920 }
 921
 922 static ir_entity *read_entity(io_env_t *env)
 923 {
 924         return get_entity(env, read_long(env));
 925 }
 926
 927 static ir_mode *read_mode(io_env_t *env)
 928 {
 929         static char buf[128];
 930         int i, n;
 931
 932         read_str_to(env, buf, sizeof(buf));
 933
 934         n = get_irp_n_modes();
 935         for (i = 0; i < n; i++) {
 936                 ir_mode *mode = get_irp_mode(i);
 937                 if (!strcmp(buf, get_mode_name(mode)))
 938                         return mode;
 939         }
 940
 941         printf("Unknown mode \"%s\" in line %i:%i\n", buf, env->line, env->col);
 942         return mode_ANY;
 943 }
 944
 945 static const char *get_typetag_name(typetag_t typetag)
 946 {
 947         switch (typetag)
 948         {
 949                 case tt_align:       return "align";
 950                 case tt_allocation:  return "allocation";
 951                 case tt_builtin:     return "builtin kind";
 952                 case tt_initializer: return "initializer kind";
 953                 case tt_iro:         return "opcode";
 954                 case tt_peculiarity: return "peculiarity";
 955                 case tt_pin_state:   return "pin state";
 956                 case tt_tpo:         return "type";
 957                 case tt_type_state:  return "type state";
 958                 case tt_variability: return "variability";
 959                 case tt_visibility:  return "visibility";
 960                 case tt_volatility:  return "volatility";
 961                 default: return "<UNKNOWN>";
 962         }
 963 }
 964
 965 /**
 966  * Read and decode an enum constant.
 967  */
 968 static unsigned read_enum(io_env_t *env, typetag_t typetag)
 969 {
 970         static char buf[128];
 971         unsigned code = symbol(read_str_to(env, buf, sizeof(buf)), typetag);
 972         if (code != SYMERROR)
 973                 return code;
 974
 975         printf("Invalid %s: \"%s\" in %i:%i\n", get_typetag_name(typetag), buf, env->line, env->col);
 976         return 0;
 977 }
 978
 979 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
 980 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
 981 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
 982 #define read_cond_kind(env)          ((cond_kind)             read_enum(env, tt_cond_kind))
 983 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
 984 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
 985 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
 986 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
 987 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
 988 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
 989 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
 990 #define read_visibility(env)         ((ir_visibility)         read_enum(env, tt_visibility))
 991 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
 992
 993 static ir_cons_flags get_cons_flags(io_env_t *env)
 994 {
 995         ir_cons_flags flags = cons_none;
 996
 997         op_pin_state pinstate = read_pin_state(env);
 998         switch (pinstate)
 999         {
1000                 case op_pin_state_floats: flags |= cons_floats; break;
1001                 case op_pin_state_pinned: break;
1002                 default:
1003                         panic("Error in %i:%i: Invalid pinstate: %s", env->line, env->col, get_op_pin_state_name(pinstate));
1004         }
1005
1006         if (read_volatility(env) == volatility_is_volatile)
1007                 flags |= cons_volatile;
1008         if (read_align(env) == align_non_aligned)
1009                 flags |= cons_unaligned;
1010
1011         return flags;
1012 }
1013
1014 static tarval *read_tv(io_env_t *env)
1015 {
1016         static char buf[128];
1017         ir_mode *tvmode = read_mode(env);
1018         read_str_to(env, buf, sizeof(buf));
1019         return new_tarval_from_str(buf, strlen(buf), tvmode);
1020 }
1021
1022 static ir_initializer_t *read_initializer(io_env_t *env)
1023 {
1024         FILE *f = env->file;
1025         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1026
1027         switch (ini_kind)
1028         {
1029                 case IR_INITIALIZER_CONST:
1030                 {
1031                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1032                         return create_initializer_const(irn);
1033                 }
1034
1035                 case IR_INITIALIZER_TARVAL:
1036                         return create_initializer_tarval(read_tv(env));
1037
1038                 case IR_INITIALIZER_NULL:
1039                         return get_initializer_null();
1040
1041                 case IR_INITIALIZER_COMPOUND:
1042                 {
1043                         unsigned i, n = (unsigned) read_long(env);
1044                         ir_initializer_t *ini = create_initializer_compound(n);
1045                         for (i = 0; i < n; i++) {
1046                                 ir_initializer_t *curini = read_initializer(env);
1047                                 set_initializer_compound_value(ini, i, curini);
1048                         }
1049                         return ini;
1050                 }
1051
1052                 default:
1053                         panic("Unknown initializer kind");
1054         }
1055 }
1056
1057
1058 /** Reads a type description and remembers it by its id. */
1059 static void import_type(io_env_t *env, keyword_t kwkind)
1060 {
1061         int            i;
1062         ir_type       *type;
1063         long           typenr = read_long(env);
1064         const char    *tpop   = read_str(env);
1065         const char    *name   = read_qstr(env);
1066         unsigned       size   = (unsigned) read_long(env);
1067         unsigned       align  = (unsigned) read_long(env);
1068         ir_type_state  state  = read_type_state(env);
1069         ir_visibility  vis    = read_visibility(env);
1070
1071         ident         *id     = new_id_from_str(name);
1072
1073         const char    *kindstr;
1074
1075         if (kwkind == kw_frametype) {
1076                 if (symbol(tpop, tt_tpo) != tpo_class) {
1077                         printf("Frame type must be a class type in line %i:%i\n", env->line, env->col);
1078                         skip_to(env, '\n');
1079                         return;
1080                 }
1081
1082                 type = new_type_frame(id);
1083                 set_type_size_bytes(type, size);
1084
1085                 kindstr = "frametype";
1086         } else if (kwkind == kw_valuetype) {
1087                 if (symbol(tpop, tt_tpo) != tpo_struct) {
1088                         printf("Value type must be a struct type in line %i:%i\n", env->line, env->col);
1089                         skip_to(env, '\n');
1090                         return;
1091                 }
1092
1093                 type = new_type_value(id);
1094                 set_type_size_bytes(type, size);
1095
1096                 kindstr = "valuetype";
1097         } else {
1098                 switch (symbol(tpop, tt_tpo))
1099                 {
1100                         case tpo_array:
1101                         {
1102                                 int ndims = (int) read_long(env);
1103                                 long elemtypenr = read_long(env);
1104                                 ir_type *elemtype = get_type(env, elemtypenr);
1105
1106                                 type = new_type_array(id, ndims, elemtype);
1107                                 for (i = 0; i < ndims; i++) {
1108                                         const char *str = read_str(env);
1109                                         if (strcmp(str, "unknown") != 0) {
1110                                                 long lowerbound = strtol(str, NULL, 0);
1111                                                 set_array_lower_bound_int(type, i, lowerbound);
1112                                         }
1113                                         str = read_str(env);
1114                                         if (strcmp(str, "unknown") != 0) {
1115                                                 long upperbound = strtol(str, NULL, 0);
1116                                                 set_array_upper_bound_int(type, i, upperbound);
1117                                         }
1118                                 }
1119                                 set_type_size_bytes(type, size);
1120                                 break;
1121                         }
1122
1123                         case tpo_class:
1124                                 type = new_type_class(id);
1125                                 set_type_size_bytes(type, size);
1126                                 break;
1127
1128                         case tpo_method:
1129                         {
1130                                 unsigned callingconv = (unsigned) read_long(env);
1131                                 unsigned addprops    = (unsigned) read_long(env);
1132                                 int nparams          = (int)      read_long(env);
1133                                 int nresults         = (int)      read_long(env);
1134                                 int variaindex;
1135
1136                                 type = new_type_method(id, nparams, nresults);
1137
1138                                 for (i = 0; i < nparams; i++) {
1139                                         long     typenr = read_long(env);
1140                                         ir_type *paramtype = get_type(env, typenr);
1141
1142                                         set_method_param_type(type, i, paramtype);
1143                                 }
1144                                 for (i = 0; i < nresults; i++) {
1145                                         long typenr = read_long(env);
1146                                         ir_type *restype = get_type(env, typenr);
1147
1148                                         set_method_res_type(type, i, restype);
1149                                 }
1150
1151                                 variaindex = (int) read_long(env);
1152                                 if (variaindex != -1) {
1153                                         set_method_variadicity(type, variadicity_variadic);
1154                                         if (variaindex != nparams)
1155                                                 set_method_first_variadic_param_index(type, variaindex);
1156                                 }
1157
1158                                 set_method_calling_convention(type, callingconv);
1159                                 set_method_additional_properties(type, addprops);
1160                                 break;
1161                         }
1162
1163                         case tpo_pointer:
1164                         {
1165                                 ir_mode *mode = read_mode(env);
1166                                 ir_type *pointsto = get_type(env, read_long(env));
1167                                 type = new_type_pointer(id, pointsto, mode);
1168                                 break;
1169                         }
1170
1171                         case tpo_primitive:
1172                         {
1173                                 ir_mode *mode = read_mode(env);
1174                                 type = new_type_primitive(id, mode);
1175                                 break;
1176                         }
1177
1178                         case tpo_struct:
1179                                 type = new_type_struct(id);
1180                                 set_type_size_bytes(type, size);
1181                                 break;
1182
1183                         case tpo_union:
1184                                 type = new_type_union(id);
1185                                 set_type_size_bytes(type, size);
1186                                 break;
1187
1188                         case tpo_unknown:
1189                                 return;   /* ignore unknown type */
1190
1191                         default:
1192                                 if (typenr != 0)  /* ignore global type */
1193                                         printf("Unknown type kind: \"%s\" in line %i:%i\n", tpop, env->line, env->col);
1194                                 skip_to(env, '\n');
1195                                 return;
1196                 }
1197                 kindstr = "type";
1198         }
1199
1200         set_type_alignment_bytes(type, align);
1201         set_type_visibility(type, vis);
1202
1203         if (state == layout_fixed)
1204                 ARR_APP1(ir_type *, env->fixedtypes, type);
1205
1206         set_id(env, typenr, type);
1207         printf("Insert %s %s %ld\n", kindstr, name, typenr);
1208 }
1209
1210 /** Reads an entity description and remembers it by its id. */
1211 static void import_entity(io_env_t *env)
1212 {
1213         char          buf[1024], buf2[1024];
1214         long          entnr       = read_long(env);
1215         const char   *name        = read_qstr_to(env, buf, sizeof(buf));
1216         const char   *ld_name     = read_qstr_to(env, buf2, sizeof(buf2));
1217         long          typenr      = read_long(env);
1218         long          ownertypenr = read_long(env);
1219
1220         ir_type   *type      = get_type(env, typenr);
1221         ir_type   *ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1222         ir_entity *entity    = new_entity(ownertype, new_id_from_str(name), type);
1223
1224         if (*ld_name)
1225                 set_entity_ld_ident(entity, new_id_from_str(ld_name));
1226         set_entity_offset     (entity, (int) read_long(env));
1227         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1228         set_entity_allocation (entity, read_allocation(env));
1229         set_entity_visibility (entity, read_visibility(env));
1230         set_entity_variability(entity, read_variability(env));
1231         set_entity_peculiarity(entity, read_peculiarity(env));
1232         set_entity_volatility (entity, read_volatility(env));
1233
1234         if (get_entity_variability(entity) != variability_uninitialized &&
1235             get_entity_visibility(entity) != visibility_external_allocated)
1236         {
1237                 if (is_compound_entity(entity)) {
1238                         if (!strcmp(read_str_to(env, buf2, sizeof(buf2)), "initializer")) {
1239                                 set_entity_initializer(entity, read_initializer(env));
1240                         } else {
1241                                 int i, n = (int) read_long(env);
1242                                 for (i = 0; i < n; i++) {
1243                                         ir_entity *member = get_entity(env, read_long(env));
1244                                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1245                                         add_compound_ent_value(entity, irn, member);
1246                                 }
1247                         }
1248                 } else {
1249                         ir_node *irn = get_node_or_dummy(env, read_long(env));
1250                         set_atomic_ent_value(entity, irn);
1251                 }
1252         }
1253
1254         set_id(env, entnr, entity);
1255         printf("Insert entity %s %ld\n", name, entnr);
1256 }
1257
1258 /** Parses the whole type graph. */
1259 static int parse_typegraph(io_env_t *env)
1260 {
1261         const char *kind;
1262         keyword_t kwkind;
1263         lex_state_t oldstate;
1264
1265         EXPECT('{');
1266
1267         save_lex_state(env, &oldstate);
1268
1269         current_ir_graph = get_const_code_irg();
1270
1271         /* parse all types first */
1272         while (1) {
1273                 kind = read_str(env);
1274                 if (kind[0] == '}' && kind[1] == '\0')
1275                         break;
1276
1277                 kwkind = (keyword_t) symbol(kind, tt_keyword);
1278                 switch (kwkind)
1279                 {
1280                         case kw_type:
1281                         case kw_frametype:
1282                         case kw_valuetype:
1283                                 import_type(env, kwkind);
1284                                 break;
1285
1286                         default:
1287                                 skip_to(env, '\n');
1288                                 break;
1289                 }
1290         }
1291
1292         /* now parse rest */
1293         restore_lex_state(env, &oldstate);
1294
1295         while (1) {
1296                 kind = read_str(env);
1297                 if (kind[0] == '}' && kind[1] == '\0')
1298                         break;
1299
1300                 switch (symbol(kind, tt_keyword))
1301                 {
1302                         case kw_type:
1303                         case kw_frametype:
1304                         case kw_valuetype:
1305                                 skip_to(env, '\n');
1306                                 break;
1307
1308                         case kw_entity:
1309                                 import_entity(env);
1310                                 break;
1311
1312                         default:
1313                                 printf("Type graph element not supported yet: \"%s\"\n", kind);
1314                                 skip_to(env, '\n');
1315                                 break;
1316                 }
1317         }
1318         return 1;
1319 }
1320
1321 static int read_node_header(io_env_t *env, long *nodenr, long **preds, const char **nodename)
1322 {
1323         int numpreds;
1324         *nodename = read_str(env);
1325         if ((*nodename)[0] == '}' && !(*nodename)[1]) return -1;  /* end-of-graph */
1326
1327         *nodenr = read_long(env);
1328
1329         ARR_RESIZE(ir_node *, *preds, 0);
1330
1331         EXPECT('[');
1332         for (numpreds = 0; !feof(env->file); numpreds++) {
1333                 char *endptr;
1334                 ARR_APP1(long, *preds, read_long2(env, &endptr));
1335                 if (*endptr == ']') break;
1336         }
1337         return numpreds;
1338 }
1339
1340 /** Parses an IRG. */
1341 static int parse_graph(io_env_t *env, ir_graph *irg)
1342 {
1343         long       *preds = NEW_ARR_F(long, 16);
1344         ir_node   **prednodes = NEW_ARR_F(ir_node *, 16);
1345         int         i, numpreds, ret = 1;
1346         long        nodenr;
1347         const char *nodename;
1348         ir_node    *node, *newnode;
1349
1350         current_ir_graph = irg;
1351
1352         EXPECT('{');
1353
1354         while (1) {
1355                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1356                 if (numpreds == -1) break;  /* end-of-graph */
1357                 if (!numpreds) {
1358                         printf("Node %s %ld is missing predecessors!", nodename, nodenr);
1359                         ret = 0;
1360                         break;
1361                 }
1362
1363                 ARR_RESIZE(ir_node *, prednodes, numpreds);
1364                 for (i = 0; i < numpreds - 1; i++)
1365                         prednodes[i] = get_node_or_dummy(env, preds[i + 1]);
1366
1367                 node = get_node_or_null(env, nodenr);
1368                 newnode = NULL;
1369
1370                 EXPECT('{');
1371
1372                 switch (symbol(nodename, tt_iro))
1373                 {
1374                         case iro_End:
1375                         {
1376                                 ir_node *newendblock = get_node(env, preds[0]);
1377                                 newnode = get_irg_end(current_ir_graph);
1378                                 exchange(get_nodes_block(newnode), newendblock);
1379                                 for (i = 0; i < numpreds - 1; i++)
1380                                         add_irn_n(newnode, prednodes[i]);
1381                                 break;
1382                         }
1383
1384                         case iro_Start:
1385                         {
1386                                 ir_node *newstartblock = get_node(env, preds[0]);
1387                                 newnode = get_irg_start(current_ir_graph);
1388                                 exchange(get_nodes_block(newnode), newstartblock);
1389                                 break;
1390                         }
1391
1392                         case iro_Block:
1393                         {
1394                                 if (preds[0] != nodenr) {
1395                                         printf("Invalid block: preds[0] != nodenr (%ld != %ld)\n",
1396                                                 preds[0], nodenr);
1397                                         ret = 0;
1398                                         goto endloop;
1399                                 }
1400
1401                                 newnode = new_Block(numpreds - 1, prednodes);
1402                                 break;
1403                         }
1404
1405                         case iro_Anchor:
1406                                 newnode = current_ir_graph->anchor;
1407                                 for (i = 0; i < numpreds - 1; i++)
1408                                         set_irn_n(newnode, i, prednodes[i]);
1409                                 set_irn_n(newnode, -1, get_node(env, preds[0]));
1410                                 break;
1411
1412                         case iro_SymConst:
1413                         {
1414                                 long entnr = read_long(env);
1415                                 union symconst_symbol sym;
1416                                 sym.entity_p = get_entity(env, entnr);
1417                                 newnode = new_SymConst(mode_P, sym, symconst_addr_ent);
1418                                 break;
1419                         }
1420
1421                         #include "gen_irio_import.inl"
1422
1423                         default:
1424                                 goto notsupported;
1425                 }
1426
1427                 EXPECT('}');
1428
1429                 if (!newnode) {
1430 notsupported:
1431                         panic("Node type not supported yet: %s in line %i:%i\n", nodename, env->line, env->col);
1432                 }
1433
1434                 if (node)
1435                         exchange(node, newnode);
1436                 /* Always update hash entry to avoid more uses of id nodes */
1437                 set_id(env, nodenr, newnode);
1438                 /* printf("Insert %s %ld\n", nodename, nodenr); */
1439         }
1440
1441 endloop:
1442         DEL_ARR_F(preds);
1443         DEL_ARR_F(prednodes);
1444
1445         return ret;
1446 }
1447
1448 static int parse_modes(io_env_t *env)
1449 {
1450         const char *kind;
1451         keyword_t kwkind;
1452
1453         EXPECT('{');
1454
1455         while (1) {
1456                 kind = read_str(env);
1457                 if (kind[0] == '}' && kind[1] == '\0')
1458                         break;
1459
1460                 kwkind = (keyword_t) symbol(kind, tt_keyword);
1461                 switch (kwkind)
1462                 {
1463                         case kw_mode:
1464                         {
1465                                 const char *name = read_qstr(env);
1466                                 ir_mode_sort sort = (ir_mode_sort) read_long(env);
1467                                 int size = read_long(env);
1468                                 int sign = read_long(env);
1469                                 ir_mode_arithmetic arith = read_mode_arithmetic(env);
1470                                 unsigned modulo_shift = read_long(env);
1471                                 int vector_elems = read_long(env);
1472
1473                                 ir_mode *mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1474
1475                                 if (mode_is_reference(mode))
1476                                 {
1477                                         set_reference_mode_signed_eq(mode, read_mode(env));
1478                                         set_reference_mode_unsigned_eq(mode, read_mode(env));
1479                                 }
1480                                 break;
1481                         }
1482
1483                         default:
1484                                 skip_to(env, '\n');
1485                                 break;
1486                 }
1487         }
1488         return 1;
1489 }
1490
1491 /** Imports an previously exported textual representation of an (maybe partial) irp */
1492 void ir_import(const char *filename)
1493 {
1494         int oldoptimize = get_optimize();
1495         firm_verification_t oldver = get_node_verification_mode();
1496         io_env_t ioenv;
1497         io_env_t *env = &ioenv;
1498         int i, n;
1499
1500         symtbl_init();
1501
1502         memset(env, 0, sizeof(*env));
1503         env->idset = new_set(id_cmp, 128);
1504         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1505
1506         env->file = fopen(filename, "rt");
1507         if (!env->file) {
1508                 perror(filename);
1509                 exit(1);
1510         }
1511
1512         set_optimize(0);
1513         do_node_verification(FIRM_VERIFICATION_OFF);
1514
1515         while (1) {
1516                 const char *str = read_str(env);
1517                 if (!*str) break;
1518                 switch (symbol(str, tt_keyword))
1519                 {
1520                         case kw_modes:
1521                                 if (!parse_modes(env)) goto end;
1522                                 break;
1523
1524                         case kw_typegraph:
1525                                 if (!parse_typegraph(env)) goto end;
1526                                 break;
1527
1528                         case kw_irg:
1529                         {
1530                                 ir_entity *irgent = get_entity(env, read_long(env));
1531                                 long valuetypeid;
1532                                 ir_graph *irg = new_ir_graph(irgent, 0);
1533                                 set_irg_frame_type(irg, get_type(env, read_long(env)));
1534                                 valuetypeid = read_long(env);
1535                                 if (valuetypeid != -1)
1536                                         set_method_value_param_type(get_entity_type(irgent),
1537                                                         get_type(env, valuetypeid));
1538
1539                                 if (!parse_graph(env, irg)) goto end;
1540                                 break;
1541                         }
1542
1543                         case kw_constirg:
1544                         {
1545                                 ir_graph *constirg = get_const_code_irg();
1546                                 long bodyblockid = read_long(env);
1547                                 set_id(env, bodyblockid, constirg->current_block);
1548                                 if (!parse_graph(env, constirg)) goto end;
1549                                 break;
1550                         }
1551                 }
1552         }
1553
1554 end:
1555         n = ARR_LEN(env->fixedtypes);
1556         for (i = 0; i < n; i++)
1557                 set_type_state(env->fixedtypes[i], layout_fixed);
1558
1559         DEL_ARR_F(env->fixedtypes);
1560
1561         del_set(env->idset);
1562
1563         irp_finalize_cons();
1564
1565         do_node_verification(oldver);
1566         set_optimize(oldoptimize);
1567
1568         fclose(env->file);
1569 }