nsz Git - cparser/blob - ast2firm.c

   1 #include <config.h>
   2
   3 #define _GNU_SOURCE
   4
   5 #include <assert.h>
   6 #include <string.h>
   7 #include <stdbool.h>
   8
   9 #include <libfirm/firm.h>
  10 #include <libfirm/adt/obst.h>
  11
  12 #include "ast2firm.h"
  13
  14 #include "adt/error.h"
  15 #include "adt/array.h"
  16 #include "token_t.h"
  17 #include "type_t.h"
  18 #include "ast_t.h"
  19
  20 #define MAGIC_DEFAULT_PN_NUMBER     (long) -314159265
  21
  22 static ir_type *ir_type_const_char;
  23 static ir_type *ir_type_void;
  24 static ir_type *ir_type_int;
  25 static ir_type *ir_type_void_ptr;
  26
  27 static type_t *type_const_char;
  28 static type_t *type_void;
  29 static type_t *type_int;
  30
  31 static int       next_value_number_function;
  32 static ir_node  *continue_label;
  33 static ir_node  *break_label;
  34 static ir_node  *current_switch_cond;
  35 static bool      saw_default_label;
  36 static ir_node **imature_blocks;
  37
  38 static const declaration_t *current_function_decl;
  39 static ir_node             *current_function_name;
  40
  41 typedef enum declaration_type_t {
  42         DECLARATION_TYPE_UNKNOWN,
  43         DECLARATION_TYPE_FUNCTION,
  44         DECLARATION_TYPE_GLOBAL_VARIABLE,
  45         DECLARATION_TYPE_LOCAL_VARIABLE,
  46         DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
  47         DECLARATION_TYPE_COMPOUND_MEMBER,
  48         DECLARATION_TYPE_LABEL_BLOCK,
  49 } declaration_type_t;
  50
  51 static ir_type *get_ir_type(type_t *type);
  52
  53 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
  54 {
  55         (void) pos;
  56 #if 0
  57         const declaration_t *declaration = & value_numbers[pos]->declaration;
  58
  59         print_warning_prefix(declaration->source_position);
  60         fprintf(stderr, "variable '%s' might be used uninitialized\n",
  61                         declaration->symbol->string);
  62 #endif
  63         fprintf(stderr, "Some variable might be used uninitialized\n");
  64         return new_r_Unknown(irg, mode);
  65 }
  66
  67 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
  68 {
  69         const source_position_t *pos = (const source_position_t*) dbg;
  70         if(pos == NULL)
  71                 return 0;
  72         return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
  73                                    pos->linenr);
  74 }
  75
  76 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
  77 {
  78         const source_position_t *pos = (const source_position_t*) dbg;
  79         if(pos == NULL)
  80                 return NULL;
  81         if(line != NULL)
  82                 *line = pos->linenr;
  83         return pos->input_name;
  84 }
  85
  86 void init_ast2firm(void)
  87 {
  88         type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
  89         type_void       = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
  90         type_int        = make_atomic_type(ATOMIC_TYPE_INT,  TYPE_QUALIFIER_NONE);
  91
  92         ir_type_int        = get_ir_type(type_int);
  93         ir_type_const_char = get_ir_type(type_const_char);
  94         ir_type_void       = get_ir_type(type_int); /* we don't have a real void
  95                                                        type in firm */
  96         ir_type_void_ptr   = new_type_pointer(new_id_from_str("void_ptr"),
  97                                               ir_type_void, mode_P_data);
  98
  99         type_void->firm_type = ir_type_void;
 100 }
 101
 102 void exit_ast2firm(void)
 103 {
 104 }
 105
 106 static unsigned unique_id = 0;
 107
 108 static ident *unique_ident(const char *tag)
 109 {
 110         char buf[256];
 111
 112         snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
 113         unique_id++;
 114         return new_id_from_str(buf);
 115 }
 116
 117 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
 118 {
 119         switch(atomic_type->atype) {
 120         case ATOMIC_TYPE_SCHAR:
 121         case ATOMIC_TYPE_CHAR:
 122                 return mode_Bs;
 123         case ATOMIC_TYPE_UCHAR:
 124                 return mode_Bu;
 125         case ATOMIC_TYPE_SHORT:
 126                 return mode_Hs;
 127         case ATOMIC_TYPE_USHORT:
 128                 return mode_Hu;
 129         case ATOMIC_TYPE_LONG:
 130         case ATOMIC_TYPE_INT:
 131                 return mode_Is;
 132         case ATOMIC_TYPE_ULONG:
 133         case ATOMIC_TYPE_UINT:
 134                 return mode_Iu;
 135         case ATOMIC_TYPE_LONGLONG:
 136                 return mode_Ls;
 137         case ATOMIC_TYPE_ULONGLONG:
 138                 return mode_Lu;
 139         case ATOMIC_TYPE_FLOAT:
 140                 return mode_F;
 141         case ATOMIC_TYPE_DOUBLE:
 142                 return mode_D;
 143         case ATOMIC_TYPE_LONG_DOUBLE:
 144                 return mode_E;
 145         case ATOMIC_TYPE_BOOL:
 146                 return mode_b;
 147 #ifdef PROVIDE_COMPLEX
 148         case ATOMIC_TYPE_FLOAT_COMPLEX:
 149         case ATOMIC_TYPE_DOUBLE_COMPLEX:
 150         case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
 151                 panic("complex lowering not implemented yet");
 152                 break;
 153         case ATOMIC_TYPE_FLOAT_IMAGINARY:
 154         case ATOMIC_TYPE_DOUBLE_IMAGINARY:
 155         case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
 156                 panic("imaginary lowering not implemented yet");
 157                 break;
 158 #endif
 159         case ATOMIC_TYPE_VOID:
 160                 /* firm has no real void... */
 161                 return mode_Is;
 162         case ATOMIC_TYPE_INVALID:
 163                 break;
 164         }
 165         panic("Encountered unknown atomic type");
 166 }
 167
 168
 169 static unsigned get_type_size(type_t *type);
 170
 171 static unsigned get_atomic_type_size(const atomic_type_t *type)
 172 {
 173         switch(type->atype) {
 174         case ATOMIC_TYPE_CHAR:
 175         case ATOMIC_TYPE_SCHAR:
 176         case ATOMIC_TYPE_UCHAR:
 177                 return 1;
 178
 179         case ATOMIC_TYPE_SHORT:
 180         case ATOMIC_TYPE_USHORT:
 181                 return 2;
 182
 183         case ATOMIC_TYPE_BOOL:
 184         case ATOMIC_TYPE_INT:
 185         case ATOMIC_TYPE_UINT:
 186         case ATOMIC_TYPE_LONG:
 187         case ATOMIC_TYPE_ULONG:
 188         case ATOMIC_TYPE_FLOAT:
 189                 return 4;
 190
 191         case ATOMIC_TYPE_LONGLONG:
 192         case ATOMIC_TYPE_ULONGLONG:
 193         case ATOMIC_TYPE_DOUBLE:
 194                 return 8;
 195
 196         case ATOMIC_TYPE_LONG_DOUBLE:
 197                 return 12;
 198
 199         case ATOMIC_TYPE_VOID:
 200                 return 1;
 201
 202         case ATOMIC_TYPE_INVALID:
 203                 break;
 204         }
 205         panic("Trying to determine size of invalid atomic type");
 206 }
 207
 208 static unsigned get_compound_type_size(compound_type_t *type)
 209 {
 210         ir_type *irtype = get_ir_type(&type->type);
 211         return get_type_size_bytes(irtype);
 212 }
 213
 214 static unsigned get_array_type_size(array_type_t *type)
 215 {
 216         ir_type *irtype = get_ir_type(&type->type);
 217         return get_type_size_bytes(irtype);
 218 }
 219
 220 static unsigned get_type_size(type_t *type)
 221 {
 222         type = skip_typeref(type);
 223
 224         switch(type->type) {
 225         case TYPE_ATOMIC:
 226                 return get_atomic_type_size((const atomic_type_t*) type);
 227         case TYPE_ENUM:
 228                 return get_mode_size_bytes(mode_Is);
 229         case TYPE_COMPOUND_UNION:
 230         case TYPE_COMPOUND_STRUCT:
 231                 return get_compound_type_size((compound_type_t*) type);
 232         case TYPE_FUNCTION:
 233                 /* just a pointer to the function */
 234                 return get_mode_size_bytes(mode_P_code);
 235         case TYPE_POINTER:
 236                 return get_mode_size_bytes(mode_P_data);
 237         case TYPE_ARRAY:
 238                 return get_array_type_size((array_type_t*) type);
 239         case TYPE_BUILTIN:
 240         case TYPE_TYPEDEF:
 241         case TYPE_TYPEOF:
 242         case TYPE_INVALID:
 243                 break;
 244         }
 245         panic("Trying to determine size of invalid type");
 246 }
 247
 248 static unsigned count_parameters(const function_type_t *function_type)
 249 {
 250         unsigned count = 0;
 251
 252         function_parameter_t *parameter = function_type->parameters;
 253         for ( ; parameter != NULL; parameter = parameter->next) {
 254                 ++count;
 255         }
 256
 257         return count;
 258 }
 259
 260
 261
 262
 263 static long fold_constant(const expression_t *expression);
 264
 265 static ir_type *create_atomic_type(const atomic_type_t *type)
 266 {
 267         ir_mode *mode   = get_atomic_mode(type);
 268         ident   *id     = get_mode_ident(mode);
 269         ir_type *irtype = new_type_primitive(id, mode);
 270
 271         return irtype;
 272 }
 273
 274 static ir_type *create_method_type(const function_type_t *function_type)
 275 {
 276         type_t  *result_type  = function_type->result_type;
 277
 278         ident   *id           = unique_ident("functiontype");
 279         int      n_parameters = count_parameters(function_type);
 280         int      n_results    = result_type == type_void ? 0 : 1;
 281         ir_type *irtype       = new_type_method(id, n_parameters, n_results);
 282
 283         if(result_type != type_void) {
 284                 ir_type *restype = get_ir_type(result_type);
 285                 set_method_res_type(irtype, 0, restype);
 286         }
 287
 288         function_parameter_t *parameter = function_type->parameters;
 289         int                   n         = 0;
 290         for( ; parameter != NULL; parameter = parameter->next) {
 291                 ir_type *p_irtype = get_ir_type(parameter->type);
 292                 set_method_param_type(irtype, n, p_irtype);
 293                 ++n;
 294         }
 295
 296         if(function_type->variadic || function_type->unspecified_parameters) {
 297                 set_method_variadicity(irtype, variadicity_variadic);
 298         }
 299
 300         return irtype;
 301 }
 302
 303 static ir_type *create_pointer_type(pointer_type_t *type)
 304 {
 305         type_t  *points_to = type->points_to;
 306         ir_type *ir_points_to;
 307         /* Avoid endless recursion if the points_to type contains this poiner type
 308          * again (might be a struct). We therefore first create a void* pointer
 309          * and then set the real points_to type
 310          */
 311         ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
 312                                             ir_type_void, mode_P_data);
 313         type->type.firm_type  = ir_type;
 314
 315         ir_points_to = get_ir_type(points_to);
 316         set_pointer_points_to_type(ir_type, ir_points_to);
 317
 318         return ir_type;
 319 }
 320
 321 static ir_type *create_array_type(array_type_t *type)
 322 {
 323         type_t  *element_type    = type->element_type;
 324         ir_type *ir_element_type = get_ir_type(element_type);
 325
 326         ident   *id      = unique_ident("array");
 327         ir_type *ir_type = new_type_array(id, 1, ir_element_type);
 328
 329         if(type->size != NULL) {
 330                 int n_elements = fold_constant(type->size);
 331
 332                 set_array_bounds_int(ir_type, 0, 0, n_elements);
 333
 334                 size_t elemsize = get_type_size_bytes(ir_element_type);
 335                 int align = get_type_alignment_bytes(ir_element_type);
 336                 if(elemsize % align > 0) {
 337                         elemsize += align - (elemsize % align);
 338                 }
 339                 set_type_size_bytes(ir_type, n_elements * elemsize);
 340                 set_type_alignment_bytes(ir_type, align);
 341                 set_type_state(ir_type, layout_fixed);
 342         }
 343
 344         return ir_type;
 345 }
 346
 347 #define INVALID_TYPE ((ir_type_ptr)-1)
 348
 349 static ir_type *create_struct_type(compound_type_t *type)
 350 {
 351         symbol_t *symbol = type->declaration->symbol;
 352         ident    *id;
 353         if(symbol != NULL) {
 354                 id = unique_ident(symbol->string);
 355         } else {
 356                 id = unique_ident("__anonymous_struct");
 357         }
 358         ir_type *ir_type = new_type_struct(id);
 359
 360         type->type.firm_type = ir_type;
 361
 362         int align_all = 1;
 363         int offset    = 0;
 364         declaration_t *entry = type->declaration->context.declarations;
 365         for( ; entry != NULL; entry = entry->next) {
 366                 if(entry->namespc != NAMESPACE_NORMAL)
 367                         continue;
 368
 369                 ident       *ident         = new_id_from_str(entry->symbol->string);
 370                 ir_type_ptr  entry_ir_type = get_ir_type(entry->type);
 371
 372                 int entry_size      = get_type_size_bytes(entry_ir_type);
 373                 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
 374                 int misalign        = offset % entry_alignment;
 375                 if (misalign != 0)
 376                         offset += entry_alignment - misalign;
 377
 378                 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
 379                 set_entity_offset(entity, offset);
 380                 add_struct_member(ir_type, entity);
 381                 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
 382                 entry->v.entity         = entity;
 383
 384                 offset += entry_size;
 385                 if(entry_alignment > align_all) {
 386                         if(entry_alignment % align_all != 0) {
 387                                 panic("Uneven alignments not supported yet");
 388                         }
 389                         align_all = entry_alignment;
 390                 }
 391         }
 392
 393         int misalign = offset % align_all;
 394         offset += misalign;
 395         set_type_alignment_bytes(ir_type, align_all);
 396         set_type_size_bytes(ir_type, offset);
 397         set_type_state(ir_type, layout_fixed);
 398
 399         return ir_type;
 400 }
 401
 402 static ir_type *create_union_type(compound_type_t *type)
 403 {
 404         declaration_t *declaration = type->declaration;
 405         symbol_t      *symbol      = declaration->symbol;
 406         ident         *id;
 407         if(symbol != NULL) {
 408                 id = unique_ident(symbol->string);
 409         } else {
 410                 id = unique_ident("__anonymous_union");
 411         }
 412         ir_type  *ir_type = new_type_union(id);
 413
 414         type->type.firm_type = ir_type;
 415
 416         int align_all = 1;
 417         int size      = 0;
 418         declaration_t *entry = declaration->context.declarations;
 419         for( ; entry != NULL; entry = entry->next) {
 420                 if(entry->namespc != NAMESPACE_NORMAL)
 421                         continue;
 422
 423                 ident       *ident         = new_id_from_str(entry->symbol->string);
 424                 ir_type_ptr  entry_ir_type = get_ir_type(entry->type);
 425
 426                 int entry_size      = get_type_size_bytes(entry_ir_type);
 427                 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
 428
 429                 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
 430                 add_union_member(ir_type, entity);
 431                 set_entity_offset(entity, 0);
 432                 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
 433                 entry->v.entity         = entity;
 434
 435                 if(entry_size > size) {
 436                         size = entry_size;
 437                 }
 438                 if(entry_alignment > align_all) {
 439                         if(entry_alignment % align_all != 0) {
 440                                 panic("Uneven alignments not supported yet");
 441                         }
 442                         align_all = entry_alignment;
 443                 }
 444         }
 445
 446         set_type_alignment_bytes(ir_type, align_all);
 447         set_type_size_bytes(ir_type, size);
 448         set_type_state(ir_type, layout_fixed);
 449
 450         return ir_type;
 451 }
 452
 453 static ir_type *get_ir_type(type_t *type)
 454 {
 455         assert(type != NULL);
 456
 457         type = skip_typeref(type);
 458
 459         if(type->firm_type != NULL) {
 460                 assert(type->firm_type != INVALID_TYPE);
 461                 return type->firm_type;
 462         }
 463
 464         ir_type *firm_type = NULL;
 465         switch(type->type) {
 466         case TYPE_ATOMIC:
 467                 firm_type = create_atomic_type((atomic_type_t*) type);
 468                 break;
 469         case TYPE_FUNCTION:
 470                 firm_type = create_method_type((function_type_t*) type);
 471                 break;
 472         case TYPE_POINTER:
 473                 firm_type = create_pointer_type((pointer_type_t*) type);
 474                 break;
 475         case TYPE_ARRAY:
 476                 firm_type = create_array_type((array_type_t*) type);
 477                 break;
 478         case TYPE_COMPOUND_STRUCT:
 479                 firm_type = create_struct_type((compound_type_t*) type);
 480                 break;
 481         case TYPE_COMPOUND_UNION:
 482                 firm_type = create_union_type((compound_type_t*) type);
 483                 break;
 484         case TYPE_ENUM:
 485                 firm_type = ir_type_int;
 486                 break;
 487         case TYPE_BUILTIN:
 488         case TYPE_TYPEOF:
 489         case TYPE_TYPEDEF:
 490         case TYPE_INVALID:
 491                 break;
 492         }
 493         if(firm_type == NULL)
 494                 panic("unknown type found");
 495
 496         type->firm_type = firm_type;
 497         return firm_type;
 498 }
 499
 500 static inline ir_mode *get_ir_mode(type_t *type)
 501 {
 502         ir_type *irtype = get_ir_type(type);
 503
 504         /* firm doesn't report a mode for arrays somehow... */
 505         if(is_Array_type(irtype)) {
 506                 return mode_P;
 507         }
 508
 509         ir_mode *mode = get_type_mode(irtype);
 510         assert(mode != NULL);
 511         return mode;
 512 }
 513
 514 static ir_entity* get_function_entity(declaration_t *declaration)
 515 {
 516         if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
 517                 return declaration->v.entity;
 518         assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
 519
 520         symbol_t *symbol = declaration->symbol;
 521         ident    *id     = new_id_from_str(symbol->string);
 522
 523         ir_type  *global_type    = get_glob_type();
 524         ir_type  *ir_type_method = get_ir_type(declaration->type);
 525         assert(is_Method_type(ir_type_method));
 526
 527         ir_entity *entity = new_entity(global_type, id, ir_type_method);
 528         set_entity_ld_ident(entity, id);
 529         if(declaration->storage_class == STORAGE_CLASS_STATIC
 530                         || declaration->is_inline) {
 531                 set_entity_visibility(entity, visibility_local);
 532         } else if(declaration->init.statement != NULL) {
 533                 set_entity_visibility(entity, visibility_external_visible);
 534         } else {
 535                 set_entity_visibility(entity, visibility_external_allocated);
 536         }
 537
 538         declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
 539         declaration->v.entity         = entity;
 540
 541         return entity;
 542 }
 543
 544
 545
 546 static ir_node *expression_to_firm(const expression_t *expression);
 547
 548 static dbg_info *get_dbg_info(const source_position_t *pos)
 549 {
 550         return (dbg_info*) pos;
 551 }
 552
 553 static ir_node *const_to_firm(const const_t *cnst)
 554 {
 555         dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
 556         ir_mode  *mode = get_ir_mode(cnst->expression.datatype);
 557
 558         tarval   *tv;
 559         if(mode_is_float(mode)) {
 560                 tv = new_tarval_from_double(cnst->v.float_value, mode);
 561         } else {
 562                 tv = new_tarval_from_long(cnst->v.int_value, mode);
 563         }
 564
 565         return new_d_Const(dbgi, mode, tv);
 566 }
 567
 568 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
 569 {
 570         assert(entity != NULL);
 571         union symconst_symbol sym;
 572         sym.entity_p = entity;
 573         return new_d_SymConst(dbgi, sym, symconst_addr_ent);
 574 }
 575
 576 static ir_node *string_to_firm(const source_position_t *const src_pos,
 577                                const char *const id_prefix,
 578                                const char *const string)
 579 {
 580         ir_type *const global_type = get_glob_type();
 581         ir_type *const type        = new_type_array(unique_ident("strtype"), 1,
 582                                                     ir_type_const_char);
 583
 584         ident     *const id     = unique_ident(id_prefix);
 585         ir_entity *const entity = new_entity(global_type, id, type);
 586         set_entity_ld_ident(entity, id);
 587         set_entity_variability(entity, variability_constant);
 588
 589         ir_type *const elem_type = ir_type_const_char;
 590         ir_mode *const mode      = get_type_mode(elem_type);
 591
 592         const size_t slen = strlen(string) + 1;
 593
 594         set_array_lower_bound_int(type, 0, 0);
 595         set_array_upper_bound_int(type, 0, slen);
 596         set_type_size_bytes(type, slen);
 597         set_type_state(type, layout_fixed);
 598
 599         tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
 600         for(size_t i = 0; i < slen; ++i) {
 601                 tvs[i] = new_tarval_from_long(string[i], mode);
 602         }
 603
 604         set_array_entity_values(entity, tvs, slen);
 605         free(tvs);
 606
 607         dbg_info *const dbgi = get_dbg_info(src_pos);
 608
 609         return create_symconst(dbgi, entity);
 610 }
 611
 612 static ir_node *string_literal_to_firm(const string_literal_t* literal)
 613 {
 614         return string_to_firm(&literal->expression.source_position, "Lstr",
 615                               literal->value);
 616 }
 617
 618 static ir_node *deref_address(type_t *const type, ir_node *const addr,
 619                               dbg_info *const dbgi)
 620 {
 621         switch (type->type) {
 622                 case TYPE_ARRAY:
 623                 case TYPE_COMPOUND_STRUCT:
 624                 case TYPE_COMPOUND_UNION:
 625                         return addr;
 626
 627                 default: {
 628                         ir_mode *const mode     = get_ir_mode(type);
 629                         ir_node *const memory   = get_store();
 630                         ir_node *const load     = new_d_Load(dbgi, memory, addr, mode);
 631                         ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
 632                         ir_node *const load_res = new_d_Proj(dbgi, load, mode,   pn_Load_res);
 633                         set_store(load_mem);
 634                         return load_res;
 635                 }
 636         }
 637 }
 638
 639 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
 640 {
 641         dbg_info      *dbgi        = get_dbg_info(&ref->expression.source_position);
 642         declaration_t *declaration = ref->declaration;
 643         type_t        *type        = skip_typeref(declaration->type);
 644
 645         switch((declaration_type_t) declaration->declaration_type) {
 646         case DECLARATION_TYPE_UNKNOWN:
 647                 break;
 648         case DECLARATION_TYPE_LOCAL_VARIABLE: {
 649                 ir_mode *mode = get_ir_mode(type);
 650                 return get_value(declaration->v.value_number, mode);
 651         }
 652         case DECLARATION_TYPE_FUNCTION: {
 653                 return create_symconst(dbgi, declaration->v.entity);
 654         }
 655         case DECLARATION_TYPE_GLOBAL_VARIABLE: {
 656                 ir_entity *entity   = declaration->v.entity;
 657                 ir_node   *symconst = create_symconst(dbgi, entity);
 658                 return deref_address(type, symconst, dbgi);
 659         }
 660         case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
 661                 ir_entity *entity = declaration->v.entity;
 662                 ir_node   *frame  = get_irg_frame(current_ir_graph);
 663                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
 664                 return deref_address(type, sel, dbgi);
 665         }
 666
 667         case DECLARATION_TYPE_COMPOUND_MEMBER:
 668         case DECLARATION_TYPE_LABEL_BLOCK:
 669                 panic("not implemented reference type");
 670         }
 671
 672         panic("reference to declaration with unknown type found");
 673 }
 674
 675 static ir_node *reference_addr(const reference_expression_t *ref)
 676 {
 677         dbg_info      *dbgi        = get_dbg_info(&ref->expression.source_position);
 678         declaration_t *declaration = ref->declaration;
 679
 680         switch((declaration_type_t) declaration->declaration_type) {
 681         case DECLARATION_TYPE_UNKNOWN:
 682                 break;
 683         case DECLARATION_TYPE_LOCAL_VARIABLE:
 684                 panic("local variable without entity has no address");
 685         case DECLARATION_TYPE_FUNCTION: {
 686                 return create_symconst(dbgi, declaration->v.entity);
 687         }
 688         case DECLARATION_TYPE_GLOBAL_VARIABLE: {
 689                 ir_entity *entity   = declaration->v.entity;
 690                 ir_node   *symconst = create_symconst(dbgi, entity);
 691                 return symconst;
 692         }
 693         case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
 694                 ir_entity *entity = declaration->v.entity;
 695                 ir_node   *frame  = get_irg_frame(current_ir_graph);
 696                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
 697
 698                 return sel;
 699         }
 700         case DECLARATION_TYPE_COMPOUND_MEMBER:
 701         case DECLARATION_TYPE_LABEL_BLOCK:
 702                 panic("not implemented reference type");
 703         }
 704
 705         panic("reference to declaration with unknown type found");
 706 }
 707
 708 static ir_node *call_expression_to_firm(const call_expression_t *call)
 709 {
 710         assert(get_cur_block() != NULL);
 711
 712         expression_t  *function = call->function;
 713         ir_node       *callee   = expression_to_firm(function);
 714
 715         function_type_t *function_type;
 716         if (function->datatype->type == TYPE_POINTER) {
 717                 pointer_type_t *const ptr_type = (pointer_type_t*)function->datatype;
 718                 assert(ptr_type->points_to->type == TYPE_FUNCTION);
 719                 function_type = (function_type_t*)ptr_type->points_to;
 720         } else {
 721                 assert(function->datatype->type == TYPE_FUNCTION);
 722                 function_type = (function_type_t*)function->datatype;
 723         }
 724
 725         int              n_parameters = 0;
 726         call_argument_t *argument     = call->arguments;
 727         for( ; argument != NULL; argument = argument->next) {
 728                 ++n_parameters;
 729         }
 730
 731         ir_type *ir_method_type  = get_ir_type((type_t*) function_type);
 732         ir_type *new_method_type = NULL;
 733         if(function_type->variadic || function_type->unspecified_parameters) {
 734                 /* we need to construct a new method type matching the call
 735                  * arguments... */
 736                 int n_res       = get_method_n_ress(ir_method_type);
 737                 new_method_type = new_type_method(unique_ident("calltype"),
 738                                                   n_parameters, n_res);
 739                 set_method_calling_convention(new_method_type,
 740                                get_method_calling_convention(ir_method_type));
 741                 set_method_additional_properties(new_method_type,
 742                                get_method_additional_properties(ir_method_type));
 743
 744                 for(int i = 0; i < n_res; ++i) {
 745                         set_method_res_type(new_method_type, i,
 746                                             get_method_res_type(ir_method_type, i));
 747                 }
 748         }
 749         ir_node *in[n_parameters];
 750
 751         argument = call->arguments;
 752         int n = 0;
 753         for( ; argument != NULL; argument = argument->next) {
 754                 expression_t *expression = argument->expression;
 755                 ir_node      *arg_node   = expression_to_firm(expression);
 756
 757                 in[n] = arg_node;
 758                 if(new_method_type != NULL) {
 759                         ir_type *irtype = get_ir_type(expression->datatype);
 760                         set_method_param_type(new_method_type, n, irtype);
 761                 }
 762
 763                 n++;
 764         }
 765         assert(n == n_parameters);
 766
 767         if(new_method_type != NULL)
 768                 ir_method_type = new_method_type;
 769
 770         dbg_info *dbgi  = get_dbg_info(&call->expression.source_position);
 771         ir_node  *store = get_store();
 772         ir_node  *node  = new_d_Call(dbgi, store, callee, n_parameters, in,
 773                                      ir_method_type);
 774         ir_node  *mem   = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
 775         set_store(mem);
 776
 777         type_t  *result_type = function_type->result_type;
 778         ir_node *result      = NULL;
 779         if(result_type != type_void) {
 780                 ir_mode *mode    = get_ir_mode(result_type);
 781                 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
 782                 result           = new_d_Proj(dbgi, resproj, mode, 0);
 783         }
 784
 785         return result;
 786 }
 787
 788 static ir_node *expression_to_addr(const expression_t *expression);
 789 static void create_condition_evaluation(const expression_t *expression,
 790                                         ir_node *true_block,
 791                                         ir_node *false_block);
 792
 793 static void set_value_for_expression(const expression_t *expression,
 794                                      ir_node *value)
 795 {
 796         if(expression->type == EXPR_REFERENCE) {
 797                 reference_expression_t *ref = (reference_expression_t*) expression;
 798
 799                 declaration_t *declaration = ref->declaration;
 800                 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
 801                 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
 802                         set_value(declaration->v.value_number, value);
 803                         return;
 804                 }
 805         }
 806
 807         dbg_info *dbgi      = get_dbg_info(&expression->source_position);
 808         ir_node  *addr      = expression_to_addr(expression);
 809         assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
 810         ir_node  *memory    = get_store();
 811         ir_node  *store     = new_d_Store(dbgi, memory, addr, value);
 812         ir_node  *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
 813         set_store(store_mem);
 814 }
 815
 816 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
 817 {
 818         ir_mode *value_mode = get_irn_mode(value);
 819
 820         if (value_mode == dest_mode || is_Bad(value))
 821                 return value;
 822
 823         if(dest_mode == mode_b) {
 824                 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
 825                 ir_node *cmp  = new_d_Cmp(dbgi, value, zero);
 826                 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
 827                 return proj;
 828         }
 829
 830         return new_d_Conv(dbgi, value, dest_mode);
 831 }
 832
 833 static ir_node *create_incdec(const unary_expression_t *expression)
 834 {
 835         dbg_info     *dbgi  = get_dbg_info(&expression->expression.source_position);
 836         type_t       *type  = expression->expression.datatype;
 837         ir_mode      *mode  = get_ir_mode(type);
 838         expression_t *value = expression->value;
 839
 840         ir_node *value_node = expression_to_firm(value);
 841
 842         ir_node *offset;
 843         if(type->type == TYPE_POINTER) {
 844                 pointer_type_t *pointer_type = (pointer_type_t*) type;
 845                 unsigned        elem_size    = get_type_size(pointer_type->points_to);
 846                 offset = new_Const_long(mode_Is, elem_size);
 847         } else {
 848                 assert(is_type_arithmetic(type));
 849                 offset = new_Const(mode, get_mode_one(mode));
 850         }
 851
 852         ir_node *new_value;
 853         switch(expression->type) {
 854         case UNEXPR_POSTFIX_INCREMENT: {
 855                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
 856                 set_value_for_expression(value, new_value);
 857                 return value_node;
 858         }
 859         case UNEXPR_POSTFIX_DECREMENT: {
 860                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
 861                 set_value_for_expression(value, new_value);
 862                 return value_node;
 863         }
 864         case UNEXPR_PREFIX_INCREMENT: {
 865                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
 866                 set_value_for_expression(value, new_value);
 867                 return new_value;
 868         }
 869         case UNEXPR_PREFIX_DECREMENT: {
 870                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
 871                 set_value_for_expression(value, new_value);
 872                 return new_value;
 873         }
 874         default:
 875                 panic("no incdec expr in create_incdec");
 876         }
 877
 878         return new_value;
 879 }
 880
 881 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
 882 {
 883         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
 884         type_t   *type = expression->expression.datatype;
 885
 886         if(expression->type == UNEXPR_TAKE_ADDRESS)
 887                 return expression_to_addr(expression->value);
 888
 889         const expression_t *value      = expression->value;
 890         ir_node            *value_node = expression_to_firm(value);
 891
 892         switch(expression->type) {
 893         case UNEXPR_NEGATE:
 894                 return new_d_Minus(dbgi, value_node, get_ir_mode(type));
 895         case UNEXPR_PLUS:
 896                 return value_node;
 897         case UNEXPR_BITWISE_NEGATE:
 898                 return new_d_Not(dbgi, value_node, get_ir_mode(type));
 899         case UNEXPR_NOT: {
 900                 if(get_irn_mode(value_node) != mode_b) {
 901                         value_node = create_conv(dbgi, value_node, mode_b);
 902                 }
 903                 value_node = new_d_Not(dbgi, value_node, mode_b);
 904                 ir_mode *const mode = get_ir_mode(type);
 905                 if(mode != mode_b) {
 906                         value_node = create_conv(dbgi, value_node, mode);
 907                 }
 908                 return value_node;
 909         }
 910         case UNEXPR_DEREFERENCE:
 911                 return deref_address(type, value_node, dbgi);
 912         case UNEXPR_POSTFIX_INCREMENT:
 913         case UNEXPR_POSTFIX_DECREMENT:
 914         case UNEXPR_PREFIX_INCREMENT:
 915         case UNEXPR_PREFIX_DECREMENT:
 916                 return create_incdec(expression);
 917         case UNEXPR_CAST:
 918                 return create_conv(dbgi, value_node, get_ir_mode(type));
 919
 920         case UNEXPR_TAKE_ADDRESS:
 921         case UNEXPR_INVALID:
 922                 break;
 923         }
 924         panic("invalid UNEXPR type found");
 925 }
 926
 927 static long get_pnc(binary_expression_type_t type)
 928 {
 929         switch(type) {
 930         case BINEXPR_EQUAL:        return pn_Cmp_Eq;
 931         case BINEXPR_NOTEQUAL:     return pn_Cmp_Lg;
 932         case BINEXPR_LESS:         return pn_Cmp_Lt;
 933         case BINEXPR_LESSEQUAL:    return pn_Cmp_Le;
 934         case BINEXPR_GREATER:      return pn_Cmp_Gt;
 935         case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
 936         default:
 937                 break;
 938         }
 939         panic("trying to get pn_Cmp from non-comparison binexpr type");
 940 }
 941
 942 static ir_node *create_lazy_op(const binary_expression_t *expression)
 943 {
 944         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
 945         type_t   *type = expression->expression.datatype;
 946         ir_mode  *mode = get_ir_mode(type);
 947
 948         ir_node *cur_block = get_cur_block();
 949
 950         ir_node *one_block = new_immBlock();
 951         ir_node *one       = new_Const(mode, get_mode_one(mode));
 952         ir_node *jmp_one   = new_d_Jmp(dbgi);
 953
 954         ir_node *zero_block = new_immBlock();
 955         ir_node *zero       = new_Const(mode, get_mode_null(mode));
 956         ir_node *jmp_zero   = new_d_Jmp(dbgi);
 957
 958         set_cur_block(cur_block);
 959         create_condition_evaluation((const expression_t*) expression,
 960                                     one_block, zero_block);
 961         mature_immBlock(one_block);
 962         mature_immBlock(zero_block);
 963
 964         ir_node *common_block = new_immBlock();
 965         add_immBlock_pred(common_block, jmp_one);
 966         add_immBlock_pred(common_block, jmp_zero);
 967         mature_immBlock(common_block);
 968
 969         ir_node *in[2] = { one, zero };
 970         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
 971
 972         return val;
 973 }
 974
 975 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
 976                                             ir_node *right, ir_mode *mode);
 977
 978 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
 979                                         create_arithmetic_func func)
 980 {
 981         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
 982         ir_node  *left  = expression_to_firm(expression->left);
 983         ir_node  *right = expression_to_firm(expression->right);
 984         type_t   *type  = expression->right->datatype;
 985         /* be careful with the modes, because in arithmetic assign nodes only
 986          * the right operand has the mode of the arithmetic already */
 987         ir_mode  *mode  = get_ir_mode(type);
 988         left            = create_conv(dbgi, left, mode);
 989         ir_node  *res   = func(dbgi, left, right, mode);
 990
 991         return res;
 992 }
 993
 994 static ir_node *pointer_arithmetic(ir_node  *const pointer,
 995                                    ir_node  *      integer,
 996                                    type_t   *const type,
 997                                    dbg_info *const dbgi,
 998                                    const create_arithmetic_func func)
 999 {
1000         pointer_type_t *const pointer_type = (pointer_type_t*)type;
1001         type_t         *const points_to    = pointer_type->points_to;
1002         const unsigned        elem_size    = get_type_size(points_to);
1003
1004         assert(elem_size >= 1);
1005         if (elem_size > 1) {
1006                 integer             = create_conv(dbgi, integer, mode_Is);
1007                 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1008                 ir_node *const mul  = new_d_Mul(dbgi, integer, cnst, mode_Is);
1009                 integer = mul;
1010         }
1011
1012         ir_mode *const mode = get_ir_mode(type);
1013         return func(dbgi, pointer, integer, mode);
1014 }
1015
1016 static ir_node *create_arithmetic_assign_binop(
1017                 const binary_expression_t *expression, create_arithmetic_func func)
1018 {
1019         dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1020         type_t   *const type = expression->expression.datatype;
1021         ir_node  *value;
1022
1023         if (type->type == TYPE_POINTER) {
1024                 ir_node        *const pointer = expression_to_firm(expression->left);
1025                 ir_node        *      integer = expression_to_firm(expression->right);
1026                 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1027         } else {
1028                 value = create_arithmetic_binop(expression, func);
1029         }
1030
1031         ir_mode  *const mode = get_ir_mode(type);
1032         value = create_conv(dbgi, value, mode);
1033         set_value_for_expression(expression->left, value);
1034
1035         return value;
1036 }
1037
1038 static ir_node *create_add(const binary_expression_t *expression)
1039 {
1040         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1041         ir_node  *left  = expression_to_firm(expression->left);
1042         ir_node  *right = expression_to_firm(expression->right);
1043         type_t   *type  = expression->expression.datatype;
1044
1045         expression_t *expr_left  = expression->left;
1046         expression_t *expr_right = expression->right;
1047         type_t       *type_left  = skip_typeref(expr_left->datatype);
1048         type_t       *type_right = skip_typeref(expr_right->datatype);
1049
1050         if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1051                 ir_mode *const mode = get_ir_mode(type);
1052                 return new_d_Add(dbgi, left, right, mode);
1053         }
1054
1055         if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1056                 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1057         } else {
1058                 assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY);
1059                 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1060         }
1061 }
1062
1063 static ir_node *create_sub(const binary_expression_t *expression)
1064 {
1065         dbg_info *const dbgi  = get_dbg_info(&expression->expression.source_position);
1066         expression_t *const expr_left  = expression->left;
1067         expression_t *const expr_right = expression->right;
1068         ir_node      *const left       = expression_to_firm(expr_left);
1069         ir_node      *const right      = expression_to_firm(expr_right);
1070         type_t       *const type       = expression->expression.datatype;
1071         type_t       *const type_left  = skip_typeref(expr_left->datatype);
1072         type_t       *const type_right = skip_typeref(expr_right->datatype);
1073
1074         if ((is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) ||
1075             (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER)) {
1076                 ir_mode *const mode = get_ir_mode(type);
1077                 return new_d_Sub(dbgi, left, right, mode);
1078         }
1079
1080         assert(type_left->type == TYPE_POINTER);
1081         return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1082 }
1083
1084 static ir_node *create_shift(const binary_expression_t *expression)
1085 {
1086         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1087         ir_node  *left  = expression_to_firm(expression->left);
1088         ir_node  *right = expression_to_firm(expression->right);
1089         type_t   *type  = expression->expression.datatype;
1090         ir_mode  *mode  = get_ir_mode(type);
1091
1092         /* firm always wants the shift count to be unsigned */
1093         right = create_conv(dbgi, right, mode_Iu);
1094
1095         ir_node *res;
1096
1097         switch(expression->type) {
1098         case BINEXPR_SHIFTLEFT:
1099                 res = new_d_Shl(dbgi, left, right, mode);
1100                 break;
1101         case BINEXPR_SHIFTRIGHT: {
1102                  expression_t *expr_left = expression->left;
1103                  type_t       *type_left = skip_typeref(expr_left->datatype);
1104
1105                  if(is_type_signed(type_left)) {
1106                         res = new_d_Shrs(dbgi, left, right, mode);
1107                  } else {
1108                          res = new_d_Shr(dbgi, left, right, mode);
1109                  }
1110                  break;
1111         }
1112         default:
1113                 panic("create shift op called for non-shift op");
1114         }
1115
1116         return res;
1117 }
1118
1119
1120 static ir_node *create_divmod(const binary_expression_t *expression)
1121 {
1122         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1123         ir_node  *left  = expression_to_firm(expression->left);
1124         ir_node  *right = expression_to_firm(expression->right);
1125         ir_node  *pin   = new_Pin(new_NoMem());
1126         type_t   *type  = expression->expression.datatype;
1127         ir_mode  *mode  = get_ir_mode(type);
1128         ir_node  *op;
1129         ir_node  *res;
1130
1131         switch (expression->type)  {
1132                 case BINEXPR_DIV:
1133                 case BINEXPR_DIV_ASSIGN:
1134                         if(mode_is_float(mode)) {
1135                                 op  = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1136                                 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1137                         } else {
1138                                 op  = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1139                                 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1140                         }
1141                         break;
1142
1143                 case BINEXPR_MOD:
1144                 case BINEXPR_MOD_ASSIGN:
1145                         assert(!mode_is_float(mode));
1146                         op  = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1147                         res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1148                         break;
1149
1150                 default: panic("unexpected binary expression type in create_divmod()");
1151         }
1152
1153         return res;
1154 }
1155
1156 static ir_node *create_arithmetic_assign_divmod(
1157                 const binary_expression_t *expression)
1158 {
1159         ir_node  *      value = create_divmod(expression);
1160         dbg_info *const dbgi  = get_dbg_info(&expression->expression.source_position);
1161         type_t   *const type  = expression->expression.datatype;
1162         ir_mode  *const mode  = get_ir_mode(type);
1163
1164         assert(type->type != TYPE_POINTER);
1165
1166         value = create_conv(dbgi, value, mode);
1167         set_value_for_expression(expression->left, value);
1168
1169         return value;
1170 }
1171
1172
1173 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1174 {
1175         binary_expression_type_t type = expression->type;
1176         switch(type) {
1177         case BINEXPR_EQUAL:
1178         case BINEXPR_NOTEQUAL:
1179         case BINEXPR_LESS:
1180         case BINEXPR_LESSEQUAL:
1181         case BINEXPR_GREATER:
1182         case BINEXPR_GREATEREQUAL: {
1183                 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1184                 ir_node *left  = expression_to_firm(expression->left);
1185                 ir_node *right = expression_to_firm(expression->right);
1186                 ir_node *cmp   = new_d_Cmp(dbgi, left, right);
1187                 long     pnc   = get_pnc(type);
1188                 ir_node *proj  = new_d_Proj(dbgi, cmp, mode_b, pnc);
1189                 return proj;
1190         }
1191         case BINEXPR_ASSIGN: {
1192                 ir_node *right = expression_to_firm(expression->right);
1193                 set_value_for_expression(expression->left, right);
1194                 return right;
1195         }
1196         case BINEXPR_ADD:
1197                 return create_add(expression);
1198         case BINEXPR_SUB:
1199                 return create_sub(expression);
1200         case BINEXPR_MUL:
1201                 return create_arithmetic_binop(expression, new_d_Mul);
1202         case BINEXPR_BITWISE_AND:
1203                 return create_arithmetic_binop(expression, new_d_And);
1204         case BINEXPR_BITWISE_OR:
1205                 return create_arithmetic_binop(expression, new_d_Or);
1206         case BINEXPR_BITWISE_XOR:
1207                 return create_arithmetic_binop(expression, new_d_Eor);
1208         case BINEXPR_SHIFTLEFT:
1209         case BINEXPR_SHIFTRIGHT:
1210                 return create_shift(expression);
1211         case BINEXPR_DIV:
1212         case BINEXPR_MOD:
1213                 return create_divmod(expression);
1214         case BINEXPR_LOGICAL_AND:
1215         case BINEXPR_LOGICAL_OR:
1216                 return create_lazy_op(expression);
1217         case BINEXPR_COMMA:
1218                 expression_to_firm(expression->left);
1219                 return expression_to_firm(expression->right);
1220         case BINEXPR_ADD_ASSIGN:
1221                 return create_arithmetic_assign_binop(expression, new_d_Add);
1222         case BINEXPR_SUB_ASSIGN:
1223                 return create_arithmetic_assign_binop(expression, new_d_Sub);
1224         case BINEXPR_MUL_ASSIGN:
1225                 return create_arithmetic_assign_binop(expression, new_d_Mul);
1226         case BINEXPR_DIV_ASSIGN:
1227                 return create_arithmetic_assign_divmod(expression);
1228         case BINEXPR_BITWISE_AND_ASSIGN:
1229                 return create_arithmetic_assign_binop(expression, new_d_And);
1230         case BINEXPR_BITWISE_OR_ASSIGN:
1231                 return create_arithmetic_assign_binop(expression, new_d_Or);
1232         case BINEXPR_BITWISE_XOR_ASSIGN:
1233                 return create_arithmetic_assign_binop(expression, new_d_Eor);
1234         case BINEXPR_SHIFTLEFT_ASSIGN:
1235                 return create_arithmetic_assign_binop(expression, new_d_Shl);
1236         case BINEXPR_SHIFTRIGHT_ASSIGN:
1237                 return create_arithmetic_assign_binop(expression, new_d_Shr);
1238         default:
1239                 panic("TODO binexpr type");
1240         }
1241 }
1242
1243 static ir_node *array_access_addr(const array_access_expression_t *expression)
1244 {
1245         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1246
1247         ir_node *base_addr = expression_to_firm(expression->array_ref);
1248         ir_node *offset    = expression_to_firm(expression->index);
1249         offset             = create_conv(dbgi, offset, mode_Iu);
1250
1251         unsigned elem_size       = get_type_size(expression->expression.datatype);
1252         ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1253         ir_node *real_offset     = new_d_Mul(dbgi, offset, elem_size_const,
1254                                              mode_Iu);
1255         ir_node *result          = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1256
1257         return result;
1258 }
1259
1260 static ir_node *array_access_to_firm(
1261                 const array_access_expression_t *expression)
1262 {
1263         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1264         ir_node  *addr = array_access_addr(expression);
1265         type_t   *type = skip_typeref(expression->expression.datatype);
1266         return deref_address(type, addr, dbgi);
1267 }
1268
1269 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1270 {
1271         type_t *type = expression->type;
1272         if(type == NULL) {
1273                 type = expression->size_expression->datatype;
1274                 assert(type != NULL);
1275         }
1276
1277         ir_mode  *mode      = get_ir_mode(expression->expression.datatype);
1278         unsigned  size      = get_type_size(type);
1279         ir_node  *size_node = new_Const_long(mode, size);
1280
1281         return size_node;
1282 }
1283
1284 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1285 {
1286         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1287
1288         ir_node *cur_block   = get_cur_block();
1289
1290         /* create the true block */
1291         ir_node *true_block  = new_immBlock();
1292
1293         ir_node *true_val = expression_to_firm(expression->true_expression);
1294         ir_node *true_jmp = new_Jmp();
1295
1296         /* create the false block */
1297         ir_node *false_block = new_immBlock();
1298
1299         ir_node *false_val = expression_to_firm(expression->false_expression);
1300         ir_node *false_jmp = new_Jmp();
1301
1302         /* create the condition evaluation */
1303         set_cur_block(cur_block);
1304         create_condition_evaluation(expression->condition, true_block, false_block);
1305         mature_immBlock(true_block);
1306         mature_immBlock(false_block);
1307
1308         /* create the common block */
1309         ir_node *common_block = new_immBlock();
1310         add_immBlock_pred(common_block, true_jmp);
1311         add_immBlock_pred(common_block, false_jmp);
1312         mature_immBlock(common_block);
1313
1314         /* TODO improve static semantics, so either both or no values are NULL */
1315         if (true_val == NULL || false_val == NULL) return NULL;
1316
1317         ir_node *in[2] = { true_val, false_val };
1318         ir_mode *mode  = get_irn_mode(true_val);
1319         assert(get_irn_mode(false_val) == mode);
1320         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
1321
1322         return val;
1323 }
1324
1325 static ir_node *select_addr(const select_expression_t *expression)
1326 {
1327         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1328
1329         ir_node *compound_addr = expression_to_firm(expression->compound);
1330
1331         declaration_t *entry = expression->compound_entry;
1332         assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1333         ir_entity     *entity = entry->v.entity;
1334
1335         assert(entity != NULL);
1336
1337         ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1338
1339         return sel;
1340 }
1341
1342 static ir_node *select_to_firm(const select_expression_t *expression)
1343 {
1344         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1345         ir_node  *addr = select_addr(expression);
1346         type_t   *type = skip_typeref(expression->expression.datatype);
1347         return deref_address(type, addr, dbgi);
1348 }
1349
1350 /* Values returned by __builtin_classify_type. */
1351 typedef enum gcc_type_class
1352 {
1353         no_type_class = -1,
1354         void_type_class,
1355         integer_type_class,
1356         char_type_class,
1357         enumeral_type_class,
1358         boolean_type_class,
1359         pointer_type_class,
1360         reference_type_class,
1361         offset_type_class,
1362         real_type_class,
1363         complex_type_class,
1364         function_type_class,
1365         method_type_class,
1366         record_type_class,
1367         union_type_class,
1368         array_type_class,
1369         string_type_class,
1370         set_type_class,
1371         file_type_class,
1372         lang_type_class
1373 } gcc_type_class;
1374
1375 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1376 {
1377         const type_t *const type = expr->type_expression->datatype;
1378
1379         gcc_type_class tc;
1380         switch (type->type)
1381         {
1382                 case TYPE_ATOMIC: {
1383                         const atomic_type_t *const atomic_type = (const atomic_type_t*)type;
1384                         switch (atomic_type->atype) {
1385                                 // should not be reached
1386                                 case ATOMIC_TYPE_INVALID:
1387                                         tc = no_type_class;
1388                                         break;
1389
1390                                 // gcc cannot do that
1391                                 case ATOMIC_TYPE_VOID:
1392                                         tc = void_type_class;
1393                                         break;
1394
1395                                 case ATOMIC_TYPE_CHAR:      // gcc handles this as integer
1396                                 case ATOMIC_TYPE_SCHAR:     // gcc handles this as integer
1397                                 case ATOMIC_TYPE_UCHAR:     // gcc handles this as integer
1398                                 case ATOMIC_TYPE_SHORT:
1399                                 case ATOMIC_TYPE_USHORT:
1400                                 case ATOMIC_TYPE_INT:
1401                                 case ATOMIC_TYPE_UINT:
1402                                 case ATOMIC_TYPE_LONG:
1403                                 case ATOMIC_TYPE_ULONG:
1404                                 case ATOMIC_TYPE_LONGLONG:
1405                                 case ATOMIC_TYPE_ULONGLONG:
1406                                 case ATOMIC_TYPE_BOOL:      // gcc handles this as integer
1407                                         tc = integer_type_class;
1408                                         break;
1409
1410                                 case ATOMIC_TYPE_FLOAT:
1411                                 case ATOMIC_TYPE_DOUBLE:
1412                                 case ATOMIC_TYPE_LONG_DOUBLE:
1413                                         tc = real_type_class;
1414                                         break;
1415
1416 #ifdef PROVIDE_COMPLEX
1417                                 case ATOMIC_TYPE_FLOAT_COMPLEX:
1418                                 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1419                                 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1420                                         tc = complex_type_class;
1421                                         break;
1422 #endif
1423
1424 #ifdef PROVIDE_IMAGINARY
1425                                 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1426                                 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1427                                 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1428                                         tc = complex_type_class;
1429                                         break;
1430 #endif
1431
1432                                 default:
1433                                         panic("Unimplemented case in classify_type_to_firm().");
1434                         }
1435                         break;
1436                 }
1437
1438                 case TYPE_ARRAY:           // gcc handles this as pointer
1439                 case TYPE_FUNCTION:        // gcc handles this as pointer
1440                 case TYPE_POINTER:         tc = pointer_type_class; break;
1441                 case TYPE_COMPOUND_STRUCT: tc = record_type_class;  break;
1442                 case TYPE_COMPOUND_UNION:  tc = union_type_class;   break;
1443
1444                 // gcc handles this as integer
1445                 case TYPE_ENUM:            tc = integer_type_class; break;
1446
1447                 default:
1448                         panic("Unimplemented case in classify_type_to_firm().");
1449         }
1450
1451         dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1452         ir_mode  *const mode = mode_Is;
1453         tarval   *const tv   = new_tarval_from_long(tc, mode);
1454         return new_d_Const(dbgi, mode, tv);
1455 }
1456
1457 static ir_node *function_name_to_firm(const string_literal_t *const expr)
1458 {
1459         if (current_function_name == NULL) {
1460                 const source_position_t *const src_pos =
1461                         &expr->expression.source_position;
1462                 const char *const name = current_function_decl->symbol->string;
1463                 current_function_name = string_to_firm(src_pos, "__func__", name);
1464         }
1465
1466         return current_function_name;
1467 }
1468
1469 static ir_node *dereference_addr(const unary_expression_t *const expression)
1470 {
1471         assert(expression->type == UNEXPR_DEREFERENCE);
1472         return expression_to_firm(expression->value);
1473 }
1474
1475 static ir_node *expression_to_addr(const expression_t *expression)
1476 {
1477         switch(expression->type) {
1478         case EXPR_REFERENCE:
1479                 return reference_addr((const reference_expression_t*) expression);
1480         case EXPR_ARRAY_ACCESS:
1481                 return array_access_addr((const array_access_expression_t*) expression);
1482         case EXPR_SELECT:
1483                 return select_addr((const select_expression_t*) expression);
1484         case EXPR_UNARY: {
1485                 const unary_expression_t *const unary_expr =
1486                         (const unary_expression_t*)expression;
1487                 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1488                         return dereference_addr(unary_expr);
1489                 }
1490                 break;
1491         }
1492         default:
1493                 break;
1494         }
1495         panic("trying to get address of non-lvalue");
1496 }
1497
1498 static ir_node *_expression_to_firm(const expression_t *expression)
1499 {
1500         switch(expression->type) {
1501         case EXPR_CONST:
1502                 return const_to_firm((const const_t*) expression);
1503         case EXPR_STRING_LITERAL:
1504                 return string_literal_to_firm((const string_literal_t*) expression);
1505         case EXPR_REFERENCE:
1506                 return reference_expression_to_firm(
1507                                 (const reference_expression_t*) expression);
1508         case EXPR_CALL:
1509                 return call_expression_to_firm((const call_expression_t*) expression);
1510         case EXPR_UNARY:
1511                 return unary_expression_to_firm((const unary_expression_t*) expression);
1512         case EXPR_BINARY:
1513                 return binary_expression_to_firm(
1514                                 (const binary_expression_t*) expression);
1515         case EXPR_ARRAY_ACCESS:
1516                 return array_access_to_firm(
1517                                 (const array_access_expression_t*) expression);
1518         case EXPR_SIZEOF:
1519                 return sizeof_to_firm((const sizeof_expression_t*) expression);
1520         case EXPR_CONDITIONAL:
1521                 return conditional_to_firm((const conditional_expression_t*)expression);
1522         case EXPR_SELECT:
1523                 return select_to_firm((const select_expression_t*) expression);
1524         case EXPR_CLASSIFY_TYPE:
1525                 return classify_type_to_firm((const classify_type_expression_t*)expression);
1526         case EXPR_FUNCTION:
1527         case EXPR_PRETTY_FUNCTION:
1528                 return function_name_to_firm((const string_literal_t*)expression);
1529         case EXPR_OFFSETOF:
1530         case EXPR_VA_ARG:
1531         case EXPR_STATEMENT:
1532         case EXPR_BUILTIN_SYMBOL:
1533                 panic("unimplemented expression found");
1534
1535         case EXPR_UNKNOWN:
1536         case EXPR_INVALID:
1537                 break;
1538         }
1539         panic("invalid expression found");
1540 }
1541
1542 static ir_node *expression_to_firm(const expression_t *expression)
1543 {
1544         ir_node *res = _expression_to_firm(expression);
1545
1546         if(res != NULL && get_irn_mode(res) == mode_b) {
1547                 ir_mode *mode = get_ir_mode(expression->datatype);
1548                 res           = create_conv(NULL, res, mode);
1549         }
1550
1551         return res;
1552 }
1553
1554 static ir_node *expression_to_modeb(const expression_t *expression)
1555 {
1556         ir_node *res = _expression_to_firm(expression);
1557         res          = create_conv(NULL, res, mode_b);
1558
1559         return res;
1560 }
1561
1562 /**
1563  * create a short-circuit expression evaluation that tries to construct
1564  * efficient control flow structures for &&, || and ! expressions
1565  */
1566 static void create_condition_evaluation(const expression_t *expression,
1567                                         ir_node *true_block,
1568                                         ir_node *false_block)
1569 {
1570         switch(expression->type) {
1571         case EXPR_UNARY: {
1572                 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1573                 if(unary_expression->type == UNEXPR_NOT) {
1574                         create_condition_evaluation(unary_expression->value, false_block,
1575                                                     true_block);
1576                         return;
1577                 }
1578                 break;
1579         }
1580         case EXPR_BINARY: {
1581                 binary_expression_t *binary_expression
1582                         = (binary_expression_t*) expression;
1583                 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1584                         ir_node *cur_block   = get_cur_block();
1585                         ir_node *extra_block = new_immBlock();
1586                         set_cur_block(cur_block);
1587                         create_condition_evaluation(binary_expression->left, extra_block,
1588                                                     false_block);
1589                         mature_immBlock(extra_block);
1590                         set_cur_block(extra_block);
1591                         create_condition_evaluation(binary_expression->right, true_block,
1592                                                     false_block);
1593                         return;
1594                 }
1595                 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1596                         ir_node *cur_block   = get_cur_block();
1597                         ir_node *extra_block = new_immBlock();
1598                         set_cur_block(cur_block);
1599                         create_condition_evaluation(binary_expression->left, true_block,
1600                                                     extra_block);
1601                         mature_immBlock(extra_block);
1602                         set_cur_block(extra_block);
1603                         create_condition_evaluation(binary_expression->right, true_block,
1604                                                     false_block);
1605                         return;
1606                 }
1607                 break;
1608         }
1609         default:
1610                 break;
1611         }
1612
1613         dbg_info *dbgi       = get_dbg_info(&expression->source_position);
1614         ir_node  *condition  = expression_to_modeb(expression);
1615         ir_node  *cond       = new_d_Cond(dbgi, condition);
1616         ir_node  *true_proj  = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1617         ir_node  *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1618
1619         add_immBlock_pred(true_block, true_proj);
1620         add_immBlock_pred(false_block, false_proj);
1621
1622         set_cur_block(NULL);
1623 }
1624
1625 static void statement_to_firm(statement_t *statement);
1626
1627 static void return_statement_to_firm(return_statement_t *statement)
1628 {
1629         if(get_cur_block() == NULL)
1630                 return;
1631
1632         dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1633         ir_node  *ret;
1634
1635         if(statement->return_value != NULL) {
1636                 ir_node *retval = expression_to_firm(statement->return_value);
1637                 ir_node *in[1];
1638
1639                 in[0] = retval;
1640                 ret   = new_d_Return(dbgi, get_store(), 1, in);
1641         } else {
1642                 ret   = new_d_Return(dbgi, get_store(), 0, NULL);
1643         }
1644         ir_node *end_block = get_irg_end_block(current_ir_graph);
1645         add_immBlock_pred(end_block, ret);
1646
1647         set_cur_block(NULL);
1648 }
1649
1650 static void compound_statement_to_firm(compound_statement_t *compound)
1651 {
1652         statement_t *statement = compound->statements;
1653         for( ; statement != NULL; statement = statement->next) {
1654                 //context2firm(&statement->context);
1655                 statement_to_firm(statement);
1656         }
1657 }
1658
1659 static void expression_statement_to_firm(expression_statement_t *statement)
1660 {
1661         if(get_cur_block() == NULL)
1662                 return;
1663
1664         expression_to_firm(statement->expression);
1665 }
1666
1667 static void if_statement_to_firm(if_statement_t *statement)
1668 {
1669         ir_node *cur_block = get_cur_block();
1670
1671         ir_node *fallthrough_block = new_immBlock();
1672
1673         /* the true (blocks) */
1674         ir_node *true_block;
1675         if (statement->true_statement != NULL) {
1676                 true_block = new_immBlock();
1677                 statement_to_firm(statement->true_statement);
1678                 if(get_cur_block() != NULL) {
1679                         ir_node *jmp = new_Jmp();
1680                         add_immBlock_pred(fallthrough_block, jmp);
1681                 }
1682         } else {
1683                 true_block = fallthrough_block;
1684         }
1685
1686         /* the false (blocks) */
1687         ir_node *false_block;
1688         if(statement->false_statement != NULL) {
1689                 false_block = new_immBlock();
1690
1691                 statement_to_firm(statement->false_statement);
1692                 if(get_cur_block() != NULL) {
1693                         ir_node *jmp = new_Jmp();
1694                         add_immBlock_pred(fallthrough_block, jmp);
1695                 }
1696         } else {
1697                 false_block = fallthrough_block;
1698         }
1699
1700         /* create the condition */
1701         if(cur_block != NULL) {
1702                 set_cur_block(cur_block);
1703                 create_condition_evaluation(statement->condition, true_block,
1704                                             false_block);
1705         }
1706
1707         mature_immBlock(true_block);
1708         if(false_block != fallthrough_block) {
1709                 mature_immBlock(false_block);
1710         }
1711         mature_immBlock(fallthrough_block);
1712
1713         set_cur_block(fallthrough_block);
1714 }
1715
1716 static void while_statement_to_firm(while_statement_t *statement)
1717 {
1718         ir_node *jmp = NULL;
1719         if(get_cur_block() != NULL) {
1720                 jmp = new_Jmp();
1721         }
1722
1723         /* create the header block */
1724         ir_node *header_block = new_immBlock();
1725         if(jmp != NULL) {
1726                 add_immBlock_pred(header_block, jmp);
1727         }
1728
1729         /* the false block */
1730         ir_node *false_block = new_immBlock();
1731
1732         /* the loop body */
1733         ir_node *body_block;
1734         if (statement->body != NULL) {
1735                 ir_node *old_continue_label = continue_label;
1736                 ir_node *old_break_label    = break_label;
1737                 continue_label              = header_block;
1738                 break_label                 = false_block;
1739
1740                 body_block = new_immBlock();
1741                 statement_to_firm(statement->body);
1742
1743                 assert(continue_label == header_block);
1744                 assert(break_label    == false_block);
1745                 continue_label = old_continue_label;
1746                 break_label    = old_break_label;
1747
1748                 if(get_cur_block() != NULL) {
1749                         ir_node *jmp = new_Jmp();
1750                         add_immBlock_pred(header_block, jmp);
1751                 }
1752         } else {
1753                 body_block = header_block;
1754         }
1755
1756         /* create the condition */
1757         set_cur_block(header_block);
1758
1759         create_condition_evaluation(statement->condition, body_block, false_block);
1760         mature_immBlock(body_block);
1761         mature_immBlock(false_block);
1762         mature_immBlock(header_block);
1763
1764         set_cur_block(false_block);
1765 }
1766
1767 static void do_while_statement_to_firm(do_while_statement_t *statement)
1768 {
1769         ir_node *jmp = NULL;
1770         if(get_cur_block() != NULL) {
1771                 jmp = new_Jmp();
1772         }
1773
1774         /* create the header block */
1775         ir_node *header_block = new_immBlock();
1776
1777         /* the false block */
1778         ir_node *false_block = new_immBlock();
1779
1780         /* the loop body */
1781         ir_node *body_block = new_immBlock();
1782         if(jmp != NULL) {
1783                 add_immBlock_pred(body_block, jmp);
1784         }
1785
1786         if (statement->body != NULL) {
1787                 ir_node *old_continue_label = continue_label;
1788                 ir_node *old_break_label    = break_label;
1789                 continue_label              = header_block;
1790                 break_label                 = false_block;
1791
1792                 statement_to_firm(statement->body);
1793
1794                 assert(continue_label == header_block);
1795                 assert(break_label    == false_block);
1796                 continue_label = old_continue_label;
1797                 break_label    = old_break_label;
1798
1799                 if (get_cur_block() == NULL) {
1800                         mature_immBlock(header_block);
1801                         mature_immBlock(body_block);
1802                         mature_immBlock(false_block);
1803                         return;
1804                 }
1805         }
1806
1807         ir_node *body_jmp = new_Jmp();
1808         add_immBlock_pred(header_block, body_jmp);
1809         mature_immBlock(header_block);
1810
1811         /* create the condition */
1812         set_cur_block(header_block);
1813
1814         create_condition_evaluation(statement->condition, body_block, false_block);
1815         mature_immBlock(body_block);
1816         mature_immBlock(false_block);
1817         mature_immBlock(header_block);
1818
1819         set_cur_block(false_block);
1820 }
1821
1822 static void for_statement_to_firm(for_statement_t *statement)
1823 {
1824         ir_node *jmp = NULL;
1825         if (get_cur_block() != NULL) {
1826                 if(statement->initialisation != NULL) {
1827                         expression_to_firm(statement->initialisation);
1828                 }
1829                 jmp = new_Jmp();
1830         }
1831
1832         /* create the step block */
1833         ir_node *const step_block = new_immBlock();
1834         if (statement->step != NULL) {
1835                 expression_to_firm(statement->step);
1836         }
1837         ir_node *const step_jmp = new_Jmp();
1838
1839         /* create the header block */
1840         ir_node *const header_block = new_immBlock();
1841         if (jmp != NULL) {
1842                 add_immBlock_pred(header_block, jmp);
1843         }
1844         add_immBlock_pred(header_block, step_jmp);
1845
1846         /* the false block */
1847         ir_node *const false_block = new_immBlock();
1848
1849         /* the loop body */
1850         ir_node * body_block;
1851         if (statement->body != NULL) {
1852                 ir_node *const old_continue_label = continue_label;
1853                 ir_node *const old_break_label    = break_label;
1854                 continue_label = step_block;
1855                 break_label    = false_block;
1856
1857                 body_block = new_immBlock();
1858                 statement_to_firm(statement->body);
1859
1860                 assert(continue_label == step_block);
1861                 assert(break_label    == false_block);
1862                 continue_label = old_continue_label;
1863                 break_label    = old_break_label;
1864
1865                 if (get_cur_block() != NULL) {
1866                         ir_node *const jmp = new_Jmp();
1867                         add_immBlock_pred(step_block, jmp);
1868                 }
1869         } else {
1870                 body_block = step_block;
1871         }
1872
1873         /* create the condition */
1874         set_cur_block(header_block);
1875         if (statement->condition != NULL) {
1876                 create_condition_evaluation(statement->condition, body_block,
1877                                             false_block);
1878         } else {
1879                 keep_alive(header_block);
1880                 ir_node *jmp = new_Jmp();
1881                 add_immBlock_pred(body_block, jmp);
1882         }
1883
1884         mature_immBlock(body_block);
1885         mature_immBlock(false_block);
1886         mature_immBlock(step_block);
1887         mature_immBlock(header_block);
1888         mature_immBlock(false_block);
1889
1890         set_cur_block(false_block);
1891 }
1892
1893 static void create_declaration_entity(declaration_t *declaration,
1894                                       declaration_type_t declaration_type,
1895                                       ir_type *parent_type)
1896 {
1897         ident     *id     = new_id_from_str(declaration->symbol->string);
1898         ir_type   *irtype = get_ir_type(declaration->type);
1899         ir_entity *entity = new_entity(parent_type, id, irtype);
1900         set_entity_ld_ident(entity, id);
1901
1902         declaration->declaration_type = declaration_type;
1903         declaration->v.entity         = entity;
1904         set_entity_variability(entity, variability_uninitialized);
1905         /* TODO: visibility? */
1906 }
1907
1908 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
1909
1910 enum compound_graph_entry_type_t {
1911         COMPOUND_GRAPH_ENTRY_ARRAY,
1912         COMPOUND_GRAPH_ENTRY_COMPOUND
1913 };
1914
1915 struct compound_graph_path_entry_t {
1916         int type;
1917         union {
1918                 ir_entity *entity;
1919                 int        array_index;
1920         } v;
1921         compound_graph_path_entry_t *prev;
1922 };
1923
1924 static void create_initializer_list(initializer_list_t *initializer,
1925                                     type_t *type, ir_entity *entity,
1926                                     compound_graph_path_entry_t *entry,
1927                                     int len);
1928
1929 static void create_initializer_value(initializer_value_t *initializer,
1930                                      ir_entity *entity,
1931                                      compound_graph_path_entry_t *entry,
1932                                      int len)
1933 {
1934         ir_node *node = expression_to_firm(initializer->value);
1935
1936         ir_type *type = get_entity_type(entity);
1937         compound_graph_path *path = new_compound_graph_path(type, len);
1938
1939         int i = len - 1;
1940         for( ; entry != NULL; entry = entry->prev, --i) {
1941                 assert(i >= 0);
1942                 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
1943                         set_compound_graph_path_node(path, i, entry->v.entity);
1944                 } else {
1945                         assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
1946                         set_compound_graph_path_array_index(path, i, entry->v.array_index);
1947                 }
1948         }
1949         assert(i == -1);
1950
1951         add_compound_ent_value_w_path(entity, node, path);
1952 }
1953
1954 static void create_initializer_compound(initializer_list_t *initializer,
1955                                         compound_type_t *type,
1956                                         ir_entity *entity,
1957                                         compound_graph_path_entry_t *last_entry,
1958                                         int len)
1959 {
1960         declaration_t *compound_declaration = type->declaration;
1961
1962         declaration_t *compound_entry = compound_declaration->context.declarations;
1963
1964         compound_graph_path_entry_t entry;
1965         entry.type     = COMPOUND_GRAPH_ENTRY_COMPOUND;
1966         entry.prev     = last_entry;
1967         ++len;
1968
1969         size_t i = 0;
1970         for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
1971                 if(compound_entry->symbol == NULL)
1972                         continue;
1973                 if(compound_entry->namespc != NAMESPACE_NORMAL)
1974                         continue;
1975
1976                 if(i >= initializer->len)
1977                         break;
1978
1979                 entry.v.entity = compound_entry->v.entity;
1980
1981                 initializer_t *sub_initializer = initializer->initializers[i];
1982
1983                 assert(compound_entry != NULL);
1984                 assert(compound_entry->declaration_type
1985                                 == DECLARATION_TYPE_COMPOUND_MEMBER);
1986
1987                 if(sub_initializer->type == INITIALIZER_VALUE) {
1988                         create_initializer_value((initializer_value_t*) sub_initializer,
1989                                                  entity, &entry, len);
1990                 } else {
1991                         assert(sub_initializer->type == INITIALIZER_LIST);
1992                         create_initializer_list((initializer_list_t*) sub_initializer,
1993                                                 compound_entry->type, entity, &entry, len);
1994                 }
1995
1996                 ++i;
1997         }
1998 }
1999
2000 static void create_initializer_list(initializer_list_t *initializer,
2001                                     type_t *type, ir_entity *entity,
2002                                     compound_graph_path_entry_t *entry, int len)
2003 {
2004         if(type->type == TYPE_ARRAY) {
2005                 /* TODO */
2006         } else {
2007                 assert(type->type == TYPE_COMPOUND_STRUCT
2008                                 || type->type == TYPE_COMPOUND_UNION);
2009                 create_initializer_compound(initializer, (compound_type_t*) type,
2010                                             entity, entry, len);
2011         }
2012 }
2013
2014 static void create_initializer(declaration_t *declaration)
2015 {
2016         initializer_t *initializer = declaration->init.initializer;
2017         if(initializer == NULL)
2018                 return;
2019
2020         if(initializer->type == INITIALIZER_VALUE) {
2021                 initializer_value_t *initializer_value
2022                         = (initializer_value_t*) initializer;
2023                 ir_node *value = expression_to_firm(initializer_value->value);
2024
2025                 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2026                         set_value(declaration->v.value_number, value);
2027                 } else {
2028                         ir_entity *entity = declaration->v.entity;
2029
2030                         set_entity_variability(entity, variability_initialized);
2031                         set_atomic_ent_value(entity, value);
2032                 }
2033         } else {
2034                 assert(initializer->type == INITIALIZER_LIST);
2035                 initializer_list_t *list = (initializer_list_t*) initializer;
2036
2037                 declaration_type_t declaration_type = declaration->declaration_type;
2038                 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2039                                 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2040
2041                 ir_entity *entity = declaration->v.entity;
2042                 set_entity_variability(entity, variability_initialized);
2043
2044                 create_initializer_list(list, declaration->type, entity, NULL, 0);
2045         }
2046 }
2047
2048 static void create_local_variable(declaration_t *declaration)
2049 {
2050         assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2051
2052         bool needs_entity = declaration->address_taken;
2053         type_t *type = skip_typeref(declaration->type);
2054
2055         if(type->type == TYPE_ARRAY
2056                         || type->type == TYPE_COMPOUND_STRUCT
2057                         || type->type == TYPE_COMPOUND_UNION) {
2058                 needs_entity = true;
2059         }
2060
2061         if(needs_entity) {
2062                 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2063                 create_declaration_entity(declaration,
2064                                           DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2065                                           frame_type);
2066         } else {
2067                 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2068                 declaration->v.value_number   = next_value_number_function;
2069                 ++next_value_number_function;
2070         }
2071
2072         create_initializer(declaration);
2073 }
2074
2075 static void declaration_statement_to_firm(declaration_statement_t *statement)
2076 {
2077         declaration_t *declaration = statement->declarations_begin;
2078         declaration_t *end         = statement->declarations_end->next;
2079         for( ; declaration != end; declaration = declaration->next) {
2080                 type_t *type = declaration->type;
2081
2082                 switch(declaration->storage_class) {
2083                 case STORAGE_CLASS_TYPEDEF:
2084                         continue;
2085                 case STORAGE_CLASS_STATIC:
2086                         panic("static local vars not implemented yet");
2087                 case STORAGE_CLASS_ENUM_ENTRY:
2088                         panic("enum entry declaration in local block found");
2089                 case STORAGE_CLASS_EXTERN:
2090                         panic("extern declaration in local block found");
2091                 case STORAGE_CLASS_NONE:
2092                 case STORAGE_CLASS_AUTO:
2093                 case STORAGE_CLASS_REGISTER:
2094                         if(type->type == TYPE_FUNCTION) {
2095                                 panic("nested functions not supported yet");
2096                         } else {
2097                                 create_local_variable(declaration);
2098                         }
2099                         continue;
2100                 }
2101                 panic("invalid storage class found");
2102         }
2103 }
2104
2105 static void create_jump_statement(const statement_t *statement,
2106                                   ir_node *target_block)
2107 {
2108         if(get_cur_block() == NULL)
2109                 return;
2110
2111         dbg_info *dbgi = get_dbg_info(&statement->source_position);
2112         ir_node  *jump = new_d_Jmp(dbgi);
2113         add_immBlock_pred(target_block, jump);
2114
2115         set_cur_block(NULL);
2116 }
2117
2118 static void switch_statement_to_firm(const switch_statement_t *statement)
2119 {
2120         dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2121
2122         ir_node *expression  = expression_to_firm(statement->expression);
2123         ir_node *cond        = new_d_Cond(dbgi, expression);
2124         ir_node *break_block = new_immBlock();
2125
2126         set_cur_block(NULL);
2127
2128         ir_node *const old_switch_cond       = current_switch_cond;
2129         ir_node *const old_break_label       = break_label;
2130         const bool     old_saw_default_label = saw_default_label;
2131         current_switch_cond                  = cond;
2132         break_label                          = break_block;
2133
2134         statement_to_firm(statement->body);
2135
2136         if(get_cur_block() != NULL) {
2137                 ir_node *jmp = new_Jmp();
2138                 add_immBlock_pred(break_block, jmp);
2139         }
2140
2141         if (!saw_default_label) {
2142                 set_cur_block(get_nodes_block(cond));
2143                 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2144                                                         MAGIC_DEFAULT_PN_NUMBER);
2145                 add_immBlock_pred(break_block, proj);
2146         }
2147
2148         assert(current_switch_cond == cond);
2149         assert(break_label         == break_block);
2150         current_switch_cond = old_switch_cond;
2151         break_label         = old_break_label;
2152         saw_default_label   = old_saw_default_label;
2153
2154         mature_immBlock(break_block);
2155         set_cur_block(break_block);
2156 }
2157
2158 static long fold_constant(const expression_t *expression)
2159 {
2160         ir_graph *old_current_ir_graph = current_ir_graph;
2161         current_ir_graph = get_const_code_irg();
2162
2163         ir_node *cnst = expression_to_firm(expression);
2164         if(!is_Const(cnst)) {
2165                 panic("couldn't fold constantl");
2166         }
2167         tarval *tv = get_Const_tarval(cnst);
2168         if(!tarval_is_long(tv)) {
2169                 panic("folded constant not an integer");
2170         }
2171
2172         long res = get_tarval_long(tv);
2173
2174         current_ir_graph = old_current_ir_graph;
2175         return res;
2176 }
2177
2178 static void case_label_to_firm(const case_label_statement_t *statement)
2179 {
2180         dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2181
2182         ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2183
2184         /* let's create a node and hope firm constant folding creates a Const
2185          * node... */
2186         ir_node *proj;
2187         set_cur_block(get_nodes_block(current_switch_cond));
2188         if(statement->expression) {
2189                 long pn = fold_constant(statement->expression);
2190                 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2191                         /* oops someone detected our cheating... */
2192                         panic("magic default pn used");
2193                 }
2194                 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2195         } else {
2196                 saw_default_label = true;
2197                 proj = new_d_defaultProj(dbgi, current_switch_cond,
2198                                          MAGIC_DEFAULT_PN_NUMBER);
2199         }
2200
2201         ir_node *block = new_immBlock();
2202         if (fallthrough != NULL) {
2203                 add_immBlock_pred(block, fallthrough);
2204         }
2205         add_immBlock_pred(block, proj);
2206         mature_immBlock(block);
2207 }
2208
2209 static ir_node *get_label_block(declaration_t *label)
2210 {
2211         assert(label->namespc == NAMESPACE_LABEL);
2212
2213         if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2214                 return label->v.block;
2215         }
2216         assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2217
2218         ir_node *old_cur_block = get_cur_block();
2219         ir_node *block         = new_immBlock();
2220         set_cur_block(old_cur_block);
2221
2222         label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2223         label->v.block          = block;
2224
2225         ARR_APP1(ir_node *, imature_blocks, block);
2226
2227         return block;
2228 }
2229
2230 static void label_to_firm(const label_statement_t *statement)
2231 {
2232         ir_node *block = get_label_block(statement->label);
2233
2234         if(get_cur_block() != NULL) {
2235                 ir_node *jmp = new_Jmp();
2236                 add_immBlock_pred(block, jmp);
2237         }
2238
2239         set_cur_block(block);
2240         keep_alive(block);
2241
2242         statement_to_firm(statement->label_statement);
2243 }
2244
2245 static void goto_to_firm(const goto_statement_t *statement)
2246 {
2247         if(get_cur_block() == NULL)
2248                 return;
2249
2250         ir_node *block = get_label_block(statement->label);
2251         ir_node *jmp   = new_Jmp();
2252         add_immBlock_pred(block, jmp);
2253
2254         set_cur_block(NULL);
2255 }
2256
2257 static void statement_to_firm(statement_t *statement)
2258 {
2259         switch(statement->type) {
2260         case STATEMENT_COMPOUND:
2261                 compound_statement_to_firm((compound_statement_t*) statement);
2262                 return;
2263         case STATEMENT_RETURN:
2264                 return_statement_to_firm((return_statement_t*) statement);
2265                 return;
2266         case STATEMENT_EXPRESSION:
2267                 expression_statement_to_firm((expression_statement_t*) statement);
2268                 return;
2269         case STATEMENT_IF:
2270                 if_statement_to_firm((if_statement_t*) statement);
2271                 return;
2272         case STATEMENT_WHILE:
2273                 while_statement_to_firm((while_statement_t*) statement);
2274                 return;
2275         case STATEMENT_DO_WHILE:
2276                 do_while_statement_to_firm((do_while_statement_t*) statement);
2277                 return;
2278         case STATEMENT_DECLARATION:
2279                 declaration_statement_to_firm((declaration_statement_t*) statement);
2280                 return;
2281         case STATEMENT_BREAK:
2282                 create_jump_statement(statement, break_label);
2283                 return;
2284         case STATEMENT_CONTINUE:
2285                 create_jump_statement(statement, continue_label);
2286                 return;
2287         case STATEMENT_SWITCH:
2288                 switch_statement_to_firm((switch_statement_t*) statement);
2289                 return;
2290         case STATEMENT_CASE_LABEL:
2291                 case_label_to_firm((case_label_statement_t*) statement);
2292                 return;
2293         case STATEMENT_FOR:
2294                 for_statement_to_firm((for_statement_t*) statement);
2295                 return;
2296         case STATEMENT_LABEL:
2297                 label_to_firm((label_statement_t*) statement);
2298                 return;
2299         case STATEMENT_GOTO:
2300                 goto_to_firm((goto_statement_t*) statement);
2301                 return;
2302         default:
2303                 break;
2304         }
2305         panic("Statement not implemented\n");
2306 }
2307
2308 static int count_local_declarations(const declaration_t *      decl,
2309                                     const declaration_t *const end)
2310 {
2311         int count = 0;
2312         for (; decl != end; decl = decl->next) {
2313                 const type_t *type = skip_typeref(decl->type);
2314                 switch (type->type) {
2315                         case TYPE_ATOMIC:
2316                         case TYPE_ENUM:
2317                         case TYPE_POINTER:
2318                                 if (!decl->address_taken) ++count;
2319                                 break;
2320
2321                         default: break;
2322                 }
2323         }
2324         return count;
2325 }
2326
2327 static int count_decls_in_stmts(const statement_t *stmt)
2328 {
2329         int count = 0;
2330         for (; stmt != NULL; stmt = stmt->next) {
2331                 switch (stmt->type) {
2332                         case STATEMENT_DECLARATION: {
2333                                 const declaration_statement_t *const decl_stmt =
2334                                         (const declaration_statement_t*)stmt;
2335                                 count += count_local_declarations(decl_stmt->declarations_begin,
2336                                                                   decl_stmt->declarations_end->next);
2337                                 break;
2338                         }
2339
2340                         case STATEMENT_COMPOUND: {
2341                                 const compound_statement_t *const comp =
2342                                         (const compound_statement_t*)stmt;
2343                                 count += count_decls_in_stmts(comp->statements);
2344                                 break;
2345                         }
2346
2347                         case STATEMENT_IF: {
2348                                 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2349                                 count += count_decls_in_stmts(if_stmt->true_statement);
2350                                 count += count_decls_in_stmts(if_stmt->false_statement);
2351                                 break;
2352                         }
2353
2354                         case STATEMENT_SWITCH: {
2355                                 const switch_statement_t *const switch_stmt =
2356                                         (const switch_statement_t*)stmt;
2357                                 count += count_decls_in_stmts(switch_stmt->body);
2358                                 break;
2359                         }
2360
2361                         case STATEMENT_LABEL: {
2362                                 const label_statement_t *const label_stmt =
2363                                         (const label_statement_t*)stmt;
2364                                 count += count_decls_in_stmts(label_stmt->label_statement);
2365                                 break;
2366                         }
2367
2368                         case STATEMENT_WHILE: {
2369                                 const while_statement_t *const while_stmt =
2370                                         (const while_statement_t*)stmt;
2371                                 count += count_decls_in_stmts(while_stmt->body);
2372                                 break;
2373                         }
2374
2375                         case STATEMENT_DO_WHILE: {
2376                                 const do_while_statement_t *const do_while_stmt =
2377                                         (const do_while_statement_t*)stmt;
2378                                 count += count_decls_in_stmts(do_while_stmt->body);
2379                                 break;
2380                         }
2381
2382                         case STATEMENT_FOR: {
2383                                 const for_statement_t *const for_stmt =
2384                                         (const for_statement_t*)stmt;
2385                                 /* TODO initialisation */
2386                                 count += count_decls_in_stmts(for_stmt->body);
2387                                 break;
2388                         }
2389
2390                         case STATEMENT_BREAK:
2391                         case STATEMENT_CASE_LABEL:
2392                         case STATEMENT_CONTINUE:
2393                         case STATEMENT_EXPRESSION:
2394                         case STATEMENT_GOTO:
2395                         case STATEMENT_INVALID:
2396                         case STATEMENT_RETURN:
2397                                 break;
2398                 }
2399         }
2400         return count;
2401 }
2402
2403 static int get_function_n_local_vars(declaration_t *declaration)
2404 {
2405         int count = 0;
2406
2407         /* count parameters */
2408         count += count_local_declarations(declaration->context.declarations, NULL);
2409
2410         /* count local variables declared in body */
2411         count += count_decls_in_stmts(declaration->init.statement);
2412
2413         return count;
2414 }
2415
2416 static void initialize_function_parameters(declaration_t *declaration)
2417 {
2418         ir_graph *irg         = current_ir_graph;
2419         ir_node  *args        = get_irg_args(irg);
2420         ir_node  *start_block = get_irg_start_block(irg);
2421
2422         int            n         = 0;
2423         declaration_t *parameter = declaration->context.declarations;
2424         for( ; parameter != NULL; parameter = parameter->next) {
2425                 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2426                 type_t *type = parameter->type;
2427
2428                 bool needs_entity = parameter->address_taken;
2429                 if(type->type == TYPE_COMPOUND_STRUCT
2430                                 || type->type == TYPE_COMPOUND_UNION) {
2431                         needs_entity = true;
2432                 }
2433
2434                 if(needs_entity) {
2435                         panic("entities for function parameters not implemented yet");
2436                 }
2437
2438                 ir_mode *mode = get_ir_mode(parameter->type);
2439                 long     pn   = n;
2440                 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2441                 ++n;
2442
2443                 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2444                 parameter->v.value_number   = next_value_number_function;
2445                 ++next_value_number_function;
2446
2447                 set_value(parameter->v.value_number, proj);
2448         }
2449 }
2450
2451 static void create_function(declaration_t *declaration)
2452 {
2453         ir_entity *entity = get_function_entity(declaration);
2454
2455         if(declaration->init.statement == NULL)
2456                 return;
2457
2458         current_function_decl = declaration;
2459         current_function_name = NULL;
2460
2461         assert(imature_blocks == NULL);
2462         imature_blocks = NEW_ARR_F(ir_node*, 0);
2463
2464         int       n_local_vars = get_function_n_local_vars(declaration);
2465         ir_graph *irg          = new_ir_graph(entity, n_local_vars);
2466         ir_node  *first_block  = get_cur_block();
2467
2468         next_value_number_function = 0;
2469         initialize_function_parameters(declaration);
2470
2471         statement_to_firm(declaration->init.statement);
2472
2473         ir_node *end_block = get_irg_end_block(irg);
2474
2475         /* do we have a return statement yet? */
2476         if(get_cur_block() != NULL) {
2477                 assert(declaration->type->type == TYPE_FUNCTION);
2478                 const function_type_t* const func_type
2479                         = (const function_type_t*) declaration->type;
2480                 ir_node *ret;
2481                 if (func_type->result_type == type_void) {
2482                         ret = new_Return(get_store(), 0, NULL);
2483                 } else {
2484                         ir_mode *const mode = get_ir_mode(func_type->result_type);
2485                         ir_node *      in[1];
2486                         // §5.1.2.2.3 main implicitly returns 0
2487                         if (strcmp(declaration->symbol->string, "main") == 0) {
2488                                 in[0] = new_Const(mode, get_mode_null(mode));
2489                         } else {
2490                                 in[0] = new_Unknown(mode);
2491                         }
2492                         ret = new_Return(get_store(), 1, in);
2493                 }
2494                 add_immBlock_pred(end_block, ret);
2495         }
2496
2497         for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2498                 mature_immBlock(imature_blocks[i]);
2499         }
2500         DEL_ARR_F(imature_blocks);
2501         imature_blocks = NULL;
2502
2503         mature_immBlock(first_block);
2504         mature_immBlock(end_block);
2505
2506         irg_finalize_cons(irg);
2507
2508         /* finalize the frame type */
2509         ir_type *frame_type = get_irg_frame_type(irg);
2510         int      n          = get_compound_n_members(frame_type);
2511         int      align_all  = 4;
2512         int      offset     = 0;
2513         for(int i = 0; i < n; ++i) {
2514                 ir_entity *entity      = get_compound_member(frame_type, i);
2515                 ir_type   *entity_type = get_entity_type(entity);
2516
2517                 int align = get_type_alignment_bytes(entity_type);
2518                 if(align > align_all)
2519                         align_all = align;
2520                 int misalign = 0;
2521                 if(align > 0) {
2522                         misalign  = offset % align;
2523                         if(misalign > 0) {
2524                                 offset += align - misalign;
2525                         }
2526                 }
2527
2528                 set_entity_offset(entity, offset);
2529                 offset += get_type_size_bytes(entity_type);
2530         }
2531         set_type_size_bytes(frame_type, offset);
2532         set_type_alignment_bytes(frame_type, align_all);
2533         set_type_state(frame_type, layout_fixed);
2534
2535         irg_vrfy(irg);
2536 }
2537
2538 static void create_global_variable(declaration_t *declaration)
2539 {
2540         ir_type   *global_type = get_glob_type();
2541         create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2542                                   global_type);
2543
2544         ir_entity *entity = declaration->v.entity;
2545         if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2546                 set_entity_visibility(entity, visibility_local);
2547         } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2548                 set_entity_visibility(entity, visibility_external_allocated);
2549         } else {
2550                 set_entity_visibility(entity, visibility_external_visible);
2551         }
2552         current_ir_graph = get_const_code_irg();
2553         create_initializer(declaration);
2554 }
2555
2556 static void context_to_firm(context_t *context)
2557 {
2558         declaration_t *declaration = context->declarations;
2559         for( ; declaration != NULL; declaration = declaration->next) {
2560                 if(declaration->namespc != NAMESPACE_NORMAL)
2561                         continue;
2562                 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2563                                 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2564                         continue;
2565                 if(declaration->symbol == NULL)
2566                         continue;
2567
2568                 type_t *type = declaration->type;
2569                 if(type->type == TYPE_FUNCTION) {
2570                         create_function(declaration);
2571                 } else {
2572                         create_global_variable(declaration);
2573                 }
2574         }
2575 }
2576
2577 void translation_unit_to_firm(translation_unit_t *unit)
2578 {
2579         /* just to be sure */
2580         continue_label      = NULL;
2581         break_label         = NULL;
2582         current_switch_cond = NULL;
2583
2584         context_to_firm(& unit->context);
2585 }