nsz Git - cparser/blob - ast2firm.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #include <assert.h>
  23 #include <string.h>
  24 #include <stdbool.h>
  25
  26 #include <libfirm/firm.h>
  27 #include <libfirm/adt/obst.h>
  28
  29 #include "ast2firm.h"
  30
  31 #include "adt/error.h"
  32 #include "adt/array.h"
  33 #include "symbol_t.h"
  34 #include "token_t.h"
  35 #include "type_t.h"
  36 #include "ast_t.h"
  37 #include "parser.h"
  38 #include "diagnostic.h"
  39 #include "lang_features.h"
  40 #include "types.h"
  41 #include "driver/firm_opt.h"
  42 #include "driver/firm_cmdline.h"
  43
  44 #define MAGIC_DEFAULT_PN_NUMBER     (long) -314159265
  45
  46 /* some idents needed for name mangling */
  47 static ident *id_underscore;
  48 static ident *id_imp;
  49
  50 static ir_type *ir_type_const_char;
  51 static ir_type *ir_type_wchar_t;
  52 static ir_type *ir_type_void;
  53 static ir_type *ir_type_int;
  54
  55 static type_t *type_const_char;
  56
  57 static int       next_value_number_function;
  58 static ir_node  *continue_label;
  59 static ir_node  *break_label;
  60 static ir_node  *current_switch_cond;
  61 static bool      saw_default_label;
  62 static ir_node **imature_blocks;
  63
  64 static const declaration_t *current_function_decl;
  65 static ir_node             *current_function_name;
  66 static ir_node             *current_funcsig;
  67
  68 static struct obstack asm_obst;
  69
  70 typedef enum declaration_kind_t {
  71         DECLARATION_KIND_UNKNOWN,
  72         DECLARATION_KIND_FUNCTION,
  73         DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
  74         DECLARATION_KIND_GLOBAL_VARIABLE,
  75         DECLARATION_KIND_LOCAL_VARIABLE,
  76         DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
  77         DECLARATION_KIND_COMPOUND_MEMBER,
  78         DECLARATION_KIND_LABEL_BLOCK,
  79         DECLARATION_KIND_ENUM_ENTRY,
  80         DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
  81         DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
  82         DECLARATION_KIND_TYPE
  83 } declaration_kind_t;
  84
  85 static ir_type *get_ir_type(type_t *type);
  86 static ir_type *get_ir_type_incomplete(type_t *type);
  87 static int count_decls_in_stmts(const statement_t *stmt);
  88
  89 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
  90 {
  91         const declaration_t *declaration = get_irg_loc_description(irg, pos);
  92
  93         warningf(&declaration->source_position,
  94                  "variable '%#T' might be used uninitialized",
  95                  declaration->type, declaration->symbol);
  96         return new_r_Unknown(irg, mode);
  97 }
  98
  99 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
 100 {
 101         const source_position_t *pos = (const source_position_t*) dbg;
 102         if(pos == NULL)
 103                 return 0;
 104         return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
 105                                    pos->linenr);
 106 }
 107
 108 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
 109 {
 110         const source_position_t *pos = (const source_position_t*) dbg;
 111         if(pos == NULL)
 112                 return NULL;
 113         if(line != NULL)
 114                 *line = pos->linenr;
 115         return pos->input_name;
 116 }
 117
 118 static dbg_info *get_dbg_info(const source_position_t *pos)
 119 {
 120         return (dbg_info*) pos;
 121 }
 122
 123 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
 124
 125 static ir_mode *mode_int, *mode_uint;
 126
 127 static ir_node *expression_to_firm(const expression_t *expression);
 128 static inline ir_mode *get_ir_mode(type_t *type);
 129 static void create_local_declaration(declaration_t *declaration);
 130
 131 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
 132 {
 133         unsigned flags = get_atomic_type_flags(kind);
 134         unsigned size  = get_atomic_type_size(kind);
 135         if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
 136                         && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
 137                 char            name[64];
 138                 ir_mode_sort    sort;
 139                 unsigned        bit_size     = size * 8;
 140                 bool            is_signed    = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
 141                 ir_mode_arithmetic arithmetic;
 142                 unsigned        modulo_shift;
 143
 144                 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
 145                         assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
 146                         snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
 147                         sort         = irms_int_number;
 148                         arithmetic   = irma_twos_complement;
 149                         modulo_shift = bit_size < machine_size ? machine_size : bit_size;
 150                 } else {
 151                         assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
 152                         snprintf(name, sizeof(name), "f%d", bit_size);
 153                         sort         = irms_float_number;
 154                         arithmetic   = irma_ieee754;
 155                         modulo_shift = 0;
 156                 }
 157                 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
 158                                    modulo_shift);
 159         }
 160
 161         return NULL;
 162 }
 163
 164 /**
 165  * Initialises the atomic modes depending on the machine size.
 166  */
 167 static void init_atomic_modes(void)
 168 {
 169         for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
 170                 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
 171         }
 172         mode_int  = _atomic_modes[ATOMIC_TYPE_INT];
 173         mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
 174
 175         /* there's no real void type in firm */
 176         _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
 177
 178         /* initialize pointer modes */
 179         char            name[64];
 180         ir_mode_sort    sort         = irms_reference;
 181         unsigned        bit_size     = machine_size;
 182         bool            is_signed    = 0;
 183         ir_mode_arithmetic arithmetic   = irma_twos_complement;
 184         unsigned        modulo_shift
 185                 = bit_size < machine_size ? machine_size : bit_size;
 186
 187         snprintf(name, sizeof(name), "p%d", machine_size);
 188         ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
 189                                         modulo_shift);
 190
 191         set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
 192         set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
 193
 194         /* Hmm, pointers should be machine size */
 195         set_modeP_data(ptr_mode);
 196         set_modeP_code(ptr_mode);
 197 }
 198
 199 static unsigned get_compound_type_size(compound_type_t *type)
 200 {
 201         ir_type *irtype = get_ir_type((type_t*) type);
 202         return get_type_size_bytes(irtype);
 203 }
 204
 205 static unsigned get_array_type_size(array_type_t *type)
 206 {
 207         assert(!type->is_vla);
 208         ir_type *irtype = get_ir_type((type_t*) type);
 209         return get_type_size_bytes(irtype);
 210 }
 211
 212
 213 static unsigned get_type_size_const(type_t *type)
 214 {
 215         type = skip_typeref(type);
 216
 217         switch(type->kind) {
 218         case TYPE_ERROR:
 219                 panic("error type occured");
 220         case TYPE_ATOMIC:
 221                 return get_atomic_type_size(type->atomic.akind);
 222         case TYPE_COMPLEX:
 223                 return 2 * get_atomic_type_size(type->complex.akind);
 224         case TYPE_IMAGINARY:
 225                 return get_atomic_type_size(type->imaginary.akind);
 226         case TYPE_ENUM:
 227                 return get_mode_size_bytes(mode_int);
 228         case TYPE_COMPOUND_UNION:
 229         case TYPE_COMPOUND_STRUCT:
 230                 return get_compound_type_size(&type->compound);
 231         case TYPE_FUNCTION:
 232                 /* just a pointer to the function */
 233                 return get_mode_size_bytes(mode_P_code);
 234         case TYPE_POINTER:
 235                 return get_mode_size_bytes(mode_P_data);
 236         case TYPE_ARRAY:
 237                 return get_array_type_size(&type->array);
 238         case TYPE_BUILTIN:
 239                 return get_type_size_const(type->builtin.real_type);
 240         case TYPE_BITFIELD:
 241                 panic("type size of bitfield request");
 242         case TYPE_TYPEDEF:
 243         case TYPE_TYPEOF:
 244         case TYPE_INVALID:
 245                 break;
 246         }
 247         panic("Trying to determine size of invalid type");
 248 }
 249
 250 static ir_node *get_type_size(type_t *type)
 251 {
 252         type = skip_typeref(type);
 253
 254         if(is_type_array(type) && type->array.is_vla) {
 255                 ir_node *size_node = type->array.size_node;
 256                 if(size_node == NULL) {
 257                         size_node = expression_to_firm(type->array.size_expression);
 258                         assert(!is_Const(size_node));
 259                         type->array.size_node = size_node;
 260                 }
 261
 262                 ir_node *elem_size = get_type_size(type->array.element_type);
 263                 ir_mode *mode      = get_irn_mode(size_node);
 264                 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
 265                 return real_size;
 266         }
 267
 268         ir_mode *mode = get_ir_mode(type_size_t);
 269         symconst_symbol sym;
 270         sym.type_p = get_ir_type(type);
 271         return new_SymConst(mode, sym, symconst_type_size);
 272 }
 273
 274 static unsigned count_parameters(const function_type_t *function_type)
 275 {
 276         unsigned count = 0;
 277
 278         function_parameter_t *parameter = function_type->parameters;
 279         for ( ; parameter != NULL; parameter = parameter->next) {
 280                 ++count;
 281         }
 282
 283         return count;
 284 }
 285
 286 /**
 287  * Creates a Firm type for an atomic type
 288  */
 289 static ir_type *create_atomic_type(const atomic_type_t *type)
 290 {
 291         dbg_info           *dbgi      = get_dbg_info(&type->base.source_position);
 292         atomic_type_kind_t  kind      = type->akind;
 293         ir_mode            *mode      = _atomic_modes[kind];
 294         ident              *id        = get_mode_ident(mode);
 295         ir_type            *irtype    = new_d_type_primitive(id, mode, dbgi);
 296
 297         set_type_alignment_bytes(irtype, type->base.alignment);
 298
 299         return irtype;
 300 }
 301
 302 /**
 303  * Creates a Firm type for a complex type
 304  */
 305 static ir_type *create_complex_type(const complex_type_t *type)
 306 {
 307         dbg_info           *dbgi      = get_dbg_info(&type->base.source_position);
 308         atomic_type_kind_t  kind      = type->akind;
 309         ir_mode            *mode      = _atomic_modes[kind];
 310         ident              *id        = get_mode_ident(mode);
 311
 312         (void) id;
 313         (void) dbgi;
 314
 315         /* FIXME: finish the array */
 316         return NULL;
 317 }
 318
 319 /**
 320  * Creates a Firm type for an imaginary type
 321  */
 322 static ir_type *create_imaginary_type(const imaginary_type_t *type)
 323 {
 324         dbg_info           *dbgi      = get_dbg_info(&type->base.source_position);
 325         atomic_type_kind_t  kind      = type->akind;
 326         ir_mode            *mode      = _atomic_modes[kind];
 327         ident              *id        = get_mode_ident(mode);
 328         ir_type            *irtype    = new_d_type_primitive(id, mode, dbgi);
 329
 330         set_type_alignment_bytes(irtype, type->base.alignment);
 331
 332         return irtype;
 333 }
 334
 335 static ir_type *create_method_type(const function_type_t *function_type)
 336 {
 337         type_t  *return_type  = function_type->return_type;
 338
 339         ident   *id           = id_unique("functiontype.%u");
 340         int      n_parameters = count_parameters(function_type);
 341         int      n_results    = return_type == type_void ? 0 : 1;
 342         dbg_info *dbgi        = get_dbg_info(&function_type->base.source_position);
 343         ir_type *irtype       = new_d_type_method(id, n_parameters, n_results, dbgi);
 344
 345         if(return_type != type_void) {
 346                 ir_type *restype = get_ir_type(return_type);
 347                 set_method_res_type(irtype, 0, restype);
 348         }
 349
 350         function_parameter_t *parameter = function_type->parameters;
 351         int                   n         = 0;
 352         for( ; parameter != NULL; parameter = parameter->next) {
 353                 ir_type *p_irtype = get_ir_type(parameter->type);
 354                 set_method_param_type(irtype, n, p_irtype);
 355                 ++n;
 356         }
 357
 358         if(function_type->variadic || function_type->unspecified_parameters) {
 359                 set_method_variadicity(irtype, variadicity_variadic);
 360         }
 361
 362         return irtype;
 363 }
 364
 365 static ir_type *create_pointer_type(pointer_type_t *type)
 366 {
 367         type_t   *points_to    = type->points_to;
 368         ir_type  *ir_points_to = get_ir_type_incomplete(points_to);
 369         dbg_info *dbgi         = get_dbg_info(&type->base.source_position);
 370         ir_type  *ir_type      = new_d_type_pointer(id_unique("pointer.%u"),
 371                                                     ir_points_to, mode_P_data, dbgi);
 372
 373         return ir_type;
 374 }
 375
 376 static ir_type *create_array_type(array_type_t *type)
 377 {
 378         type_t  *element_type    = type->element_type;
 379         ir_type *ir_element_type = get_ir_type(element_type);
 380
 381         ident    *id      = id_unique("array.%u");
 382         dbg_info *dbgi    = get_dbg_info(&type->base.source_position);
 383         ir_type  *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
 384
 385         const int align = get_type_alignment_bytes(ir_element_type);
 386         set_type_alignment_bytes(ir_type, align);
 387
 388         if(type->size_constant) {
 389                 int n_elements = type->size;
 390
 391                 set_array_bounds_int(ir_type, 0, 0, n_elements);
 392
 393                 size_t elemsize = get_type_size_bytes(ir_element_type);
 394                 if(elemsize % align > 0) {
 395                         elemsize += align - (elemsize % align);
 396                 }
 397                 set_type_size_bytes(ir_type, n_elements * elemsize);
 398         } else {
 399                 set_array_lower_bound_int(ir_type, 0, 0);
 400         }
 401         set_type_state(ir_type, layout_fixed);
 402
 403         return ir_type;
 404 }
 405
 406 /**
 407  * Return the signed integer type of size bits.
 408  *
 409  * @param size   the size
 410  */
 411 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
 412                                                  unsigned size)
 413 {
 414         static ir_mode *s_modes[64 + 1] = {NULL, };
 415         ir_type *res;
 416         ir_mode *mode;
 417
 418         if (size <= 0 || size > 64)
 419                 return NULL;
 420
 421         mode = s_modes[size];
 422         if (mode == NULL) {
 423                 char name[32];
 424
 425                 snprintf(name, sizeof(name), "bf_I%u", size);
 426                 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
 427                                    size <= 32 ? 32 : size );
 428                 s_modes[size] = mode;
 429         }
 430
 431         char name[32];
 432         snprintf(name, sizeof(name), "I%u", size);
 433         ident *id = new_id_from_str(name);
 434         dbg_info *dbgi = get_dbg_info(&builtin_source_position);
 435         res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
 436         set_primitive_base_type(res, base_tp);
 437
 438         return res;
 439 }
 440
 441 /**
 442  * Return the unsigned integer type of size bits.
 443  *
 444  * @param size   the size
 445  */
 446 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
 447                                                    unsigned size)
 448 {
 449         static ir_mode *u_modes[64 + 1] = {NULL, };
 450         ir_type *res;
 451         ir_mode *mode;
 452
 453         if (size <= 0 || size > 64)
 454                 return NULL;
 455
 456         mode = u_modes[size];
 457         if (mode == NULL) {
 458                 char name[32];
 459
 460                 snprintf(name, sizeof(name), "bf_U%u", size);
 461                 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
 462                                    size <= 32 ? 32 : size );
 463                 u_modes[size] = mode;
 464         }
 465
 466         char name[32];
 467
 468         snprintf(name, sizeof(name), "U%u", size);
 469         ident *id = new_id_from_str(name);
 470         dbg_info *dbgi = get_dbg_info(&builtin_source_position);
 471         res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
 472         set_primitive_base_type(res, base_tp);
 473
 474         return res;
 475 }
 476
 477 static ir_type *create_bitfield_type(bitfield_type_t *const type)
 478 {
 479         type_t *base = skip_typeref(type->base_type);
 480         assert(base->kind == TYPE_ATOMIC);
 481         ir_type *irbase = get_ir_type(base);
 482
 483         unsigned size = fold_constant(type->size);
 484
 485         assert(!is_type_float(base));
 486         if(is_type_signed(base)) {
 487                 return get_signed_int_type_for_bit_size(irbase, size);
 488         } else {
 489                 return get_unsigned_int_type_for_bit_size(irbase, size);
 490         }
 491 }
 492
 493 #define INVALID_TYPE ((ir_type_ptr)-1)
 494
 495 enum {
 496         COMPOUND_IS_STRUCT = false,
 497         COMPOUND_IS_UNION  = true
 498 };
 499
 500 /**
 501  * Construct firm type from ast struct tyep.
 502  *
 503  * As anonymous inner structs get flattened to a single firm type, we might get
 504  * irtype, outer_offset and out_align passed (they represent the position of
 505  * the anonymous inner struct inside the resulting firm struct)
 506  */
 507 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
 508                                      size_t *outer_offset, size_t *outer_align,
 509                                      bool incomplete, bool is_union)
 510 {
 511         declaration_t      *declaration = type->declaration;
 512         declaration_kind_t  kind        = declaration->declaration_kind;
 513
 514         if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
 515                         || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
 516                                 && incomplete))
 517                 return declaration->v.irtype;
 518
 519         size_t align_all  = 1;
 520         size_t offset     = 0;
 521         size_t bit_offset = 0;
 522         size_t size       = 0;
 523
 524         if(irtype == NULL) {
 525                 symbol_t *symbol = declaration->symbol;
 526                 ident    *id;
 527                 if(symbol != NULL) {
 528                         id = new_id_from_str(symbol->string);
 529                 } else {
 530                         if (is_union) {
 531                                 id = id_unique("__anonymous_union.%u");
 532                         } else {
 533                                 id = id_unique("__anonymous_struct.%u");
 534                         }
 535                 }
 536                 dbg_info *dbgi  = get_dbg_info(&type->base.source_position);
 537
 538                 if (is_union) {
 539                         irtype = new_d_type_union(id, dbgi);
 540                 } else {
 541                         irtype = new_d_type_struct(id, dbgi);
 542                 }
 543
 544                 declaration->declaration_kind
 545                         = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
 546                 declaration->v.irtype         = irtype;
 547                 //type->base.firm_type          = irtype;
 548         } else {
 549                 offset    = *outer_offset;
 550                 align_all = *outer_align;
 551         }
 552
 553         if(incomplete)
 554                 return irtype;
 555
 556         declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
 557
 558         declaration_t *entry = declaration->scope.declarations;
 559         for( ; entry != NULL; entry = entry->next) {
 560                 if(entry->namespc != NAMESPACE_NORMAL)
 561                         continue;
 562
 563                 size_t prev_offset = offset;
 564
 565                 symbol_t *symbol     = entry->symbol;
 566                 type_t   *entry_type = skip_typeref(entry->type);
 567                 dbg_info *dbgi       = get_dbg_info(&entry->source_position);
 568
 569                 ident    *ident;
 570                 if(symbol != NULL) {
 571                         ident = new_id_from_str(symbol->string);
 572                 } else {
 573                         if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
 574                                 create_compound_type(&entry_type->compound, irtype, &offset,
 575                                                      &align_all, false, COMPOUND_IS_STRUCT);
 576                                 goto finished_member;
 577                         } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
 578                                 create_compound_type(&entry_type->compound, irtype, &offset,
 579                                                      &align_all, false, COMPOUND_IS_UNION);
 580                                 goto finished_member;
 581                         } else {
 582                                 assert(entry_type->kind == TYPE_BITFIELD);
 583                         }
 584                         ident = id_unique("anon.%u");
 585                 }
 586
 587                 ir_type *base_irtype;
 588                 if(entry_type->kind == TYPE_BITFIELD) {
 589                         base_irtype = get_ir_type(entry_type->bitfield.base_type);
 590                 } else {
 591                         base_irtype = get_ir_type(entry_type);
 592                 }
 593
 594                 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
 595                 size_t misalign        = offset % entry_alignment;
 596
 597                 ir_type   *entry_irtype = get_ir_type(entry_type);
 598                 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
 599
 600                 size_t base;
 601                 size_t bits_remainder;
 602                 if(entry_type->kind == TYPE_BITFIELD) {
 603                         size_t size_bits      = fold_constant(entry_type->bitfield.size);
 604                         size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
 605
 606                         if(size_bits > rest_size_bits) {
 607                                 /* start a new bucket */
 608                                 offset     += entry_alignment - misalign;
 609                                 bit_offset  = 0;
 610
 611                                 base           = offset;
 612                                 bits_remainder = 0;
 613                         } else {
 614                                 /* put into current bucket */
 615                                 base           = offset - misalign;
 616                                 bits_remainder = misalign * 8 + bit_offset;
 617                         }
 618
 619                         offset     += size_bits / 8;
 620                         bit_offset  = bit_offset + (size_bits % 8);
 621                 } else {
 622                         size_t entry_size = get_type_size_bytes(base_irtype);
 623                         if(misalign > 0 || bit_offset > 0)
 624                                 offset += entry_alignment - misalign;
 625
 626                         base           = offset;
 627                         bits_remainder = 0;
 628                         offset        += entry_size;
 629                         bit_offset     = 0;
 630                 }
 631
 632                 if(entry_alignment > align_all) {
 633                         if(entry_alignment % align_all != 0) {
 634                                 panic("uneven alignments not supported yet");
 635                         }
 636                         align_all = entry_alignment;
 637                 }
 638
 639                 set_entity_offset(entity, base);
 640                 set_entity_offset_bits_remainder(entity,
 641                                                  (unsigned char) bits_remainder);
 642                 //add_struct_member(irtype, entity);
 643                 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
 644                 assert(entry->v.entity == NULL);
 645                 entry->v.entity         = entity;
 646
 647 finished_member:
 648                 if (is_union) {
 649                         size_t entry_size = offset - prev_offset;
 650                         if (entry_size > size) {
 651                                 size = entry_size;
 652                         }
 653                         offset     = 0;
 654                         bit_offset = 0;
 655                 }
 656         }
 657
 658         if (!is_union) {
 659                 size = offset;
 660         }
 661
 662         size_t misalign = offset % align_all;
 663         if(misalign > 0 || bit_offset > 0) {
 664                 size += align_all - misalign;
 665         }
 666
 667         if(outer_offset != NULL) {
 668                 if (!is_union) {
 669                         *outer_offset = offset;
 670                 } else {
 671                         *outer_offset += size;
 672                 }
 673
 674                 if (align_all > *outer_align) {
 675                         if(align_all % *outer_align != 0) {
 676                                 panic("uneven alignments not supported yet");
 677                         }
 678                         *outer_align = align_all;
 679                 }
 680         } else {
 681                 set_type_alignment_bytes(irtype, align_all);
 682                 set_type_size_bytes(irtype, size);
 683                 set_type_state(irtype, layout_fixed);
 684         }
 685
 686         return irtype;
 687 }
 688
 689 static ir_type *create_enum_type(enum_type_t *const type)
 690 {
 691         type->base.firm_type = ir_type_int;
 692
 693         ir_mode *const mode    = mode_int;
 694         tarval  *const one     = get_mode_one(mode);
 695         tarval  *      tv_next = get_tarval_null(mode);
 696
 697         declaration_t *declaration = type->declaration->next;
 698         for (; declaration != NULL; declaration = declaration->next) {
 699                 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
 700                         break;
 701
 702                 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
 703
 704                 expression_t *const init = declaration->init.enum_value;
 705                 if (init != NULL) {
 706                         ir_node *const cnst = expression_to_firm(init);
 707                         if (!is_Const(cnst)) {
 708                                 panic("couldn't fold constant");
 709                         }
 710                         tv_next = get_Const_tarval(cnst);
 711                 }
 712                 declaration->v.enum_val = tv_next;
 713                 tv_next = tarval_add(tv_next, one);
 714         }
 715
 716         return ir_type_int;
 717 }
 718
 719 static ir_type *get_ir_type_incomplete(type_t *type)
 720 {
 721         assert(type != NULL);
 722         type = skip_typeref(type);
 723
 724         if (type->base.firm_type != NULL) {
 725                 assert(type->base.firm_type != INVALID_TYPE);
 726                 return type->base.firm_type;
 727         }
 728
 729         switch (type->kind) {
 730         case TYPE_COMPOUND_STRUCT:
 731                 return create_compound_type(&type->compound, NULL, NULL, NULL,
 732                                             true, COMPOUND_IS_STRUCT);
 733                 break;
 734         case TYPE_COMPOUND_UNION:
 735                 return create_compound_type(&type->compound, NULL, NULL, NULL,
 736                                             true, COMPOUND_IS_UNION);
 737         default:
 738                 return get_ir_type(type);
 739         }
 740 }
 741
 742 static ir_type *get_ir_type(type_t *type)
 743 {
 744         assert(type != NULL);
 745
 746         type = skip_typeref(type);
 747
 748         if (type->base.firm_type != NULL) {
 749                 assert(type->base.firm_type != INVALID_TYPE);
 750                 return type->base.firm_type;
 751         }
 752
 753         ir_type *firm_type = NULL;
 754         switch (type->kind) {
 755         case TYPE_ERROR:
 756                 panic("error type occurred");
 757         case TYPE_ATOMIC:
 758                 firm_type = create_atomic_type(&type->atomic);
 759                 break;
 760         case TYPE_COMPLEX:
 761                 firm_type = create_complex_type(&type->complex);
 762                 break;
 763         case TYPE_IMAGINARY:
 764                 firm_type = create_imaginary_type(&type->imaginary);
 765                 break;
 766         case TYPE_FUNCTION:
 767                 firm_type = create_method_type(&type->function);
 768                 break;
 769         case TYPE_POINTER:
 770                 firm_type = create_pointer_type(&type->pointer);
 771                 break;
 772         case TYPE_ARRAY:
 773                 firm_type = create_array_type(&type->array);
 774                 break;
 775         case TYPE_COMPOUND_STRUCT:
 776                 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
 777                                                  false, COMPOUND_IS_STRUCT);
 778                 break;
 779         case TYPE_COMPOUND_UNION:
 780                 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
 781                                                  false, COMPOUND_IS_UNION);
 782                 break;
 783         case TYPE_ENUM:
 784                 firm_type = create_enum_type(&type->enumt);
 785                 break;
 786         case TYPE_BUILTIN:
 787                 firm_type = get_ir_type(type->builtin.real_type);
 788                 break;
 789         case TYPE_BITFIELD:
 790                 firm_type = create_bitfield_type(&type->bitfield);
 791                 break;
 792
 793         case TYPE_TYPEOF:
 794         case TYPE_TYPEDEF:
 795         case TYPE_INVALID:
 796                 break;
 797         }
 798         if(firm_type == NULL)
 799                 panic("unknown type found");
 800
 801         type->base.firm_type = firm_type;
 802         return firm_type;
 803 }
 804
 805 static inline ir_mode *get_ir_mode(type_t *type)
 806 {
 807         ir_type *irtype = get_ir_type(type);
 808
 809         /* firm doesn't report a mode for arrays somehow... */
 810         if(is_Array_type(irtype)) {
 811                 return mode_P_data;
 812         }
 813
 814         ir_mode *mode = get_type_mode(irtype);
 815         assert(mode != NULL);
 816         return mode;
 817 }
 818
 819 /** Names of the runtime functions. */
 820 static const struct {
 821         int        id;           /**< the rts id */
 822         int        n_res;        /**< number of return values */
 823         const char *name;        /**< the name of the rts function */
 824         int        n_params;     /**< number of parameters */
 825         unsigned   flags;        /**< language flags */
 826 } rts_data[] = {
 827         { rts_debugbreak, 0, "__debugbreak", 0, _MS },
 828         { rts_abort,      0, "abort",        0, _C89 },
 829         { rts_alloca,     1, "alloca",       1, _GNUC },
 830         { rts_abs,        1, "abs",          1, _C89 },
 831         { rts_labs,       1, "labs",         1, _C89 },
 832         { rts_llabs,      1, "llabs",        1, _C99 },
 833         { rts_imaxabs,    1, "imaxabs",      1, _C99 },
 834
 835         { rts_fabs,       1, "fabs",         1, _C89 },
 836         { rts_sqrt,       1, "sqrt",         1, _C89 },
 837         { rts_cbrt,       1, "cbrt",         1, _C99 },
 838         { rts_exp,        1, "exp",          1, _C89 },
 839         { rts_exp2,       1, "exp2",         1, _C89 },
 840         { rts_exp10,      1, "exp10",        1, _GNUC },
 841         { rts_log,        1, "log",          1, _C89 },
 842         { rts_log2,       1, "log2",         1, _C89 },
 843         { rts_log10,      1, "log10",        1, _C89 },
 844         { rts_pow,        1, "pow",          2, _C89 },
 845         { rts_sin,        1, "sin",          1, _C89 },
 846         { rts_cos,        1, "cos",          1, _C89 },
 847         { rts_tan,        1, "tan",          1, _C89 },
 848         { rts_asin,       1, "asin",         1, _C89 },
 849         { rts_acos,       1, "acos",         1, _C89 },
 850         { rts_atan,       1, "atan",         1, _C89 },
 851         { rts_sinh,       1, "sinh",         1, _C89 },
 852         { rts_cosh,       1, "cosh",         1, _C89 },
 853         { rts_tanh,       1, "tanh",         1, _C89 },
 854
 855         { rts_fabsf,      1, "fabsf",        1, _C99 },
 856         { rts_sqrtf,      1, "sqrtf",        1, _C99 },
 857         { rts_cbrtf,      1, "cbrtf",        1, _C99 },
 858         { rts_expf,       1, "expf",         1, _C99 },
 859         { rts_exp2f,      1, "exp2f",        1, _C99 },
 860         { rts_exp10f,     1, "exp10f",       1, _GNUC },
 861         { rts_logf,       1, "logf",         1, _C99 },
 862         { rts_log2f,      1, "log2f",        1, _C99 },
 863         { rts_log10f,     1, "log10f",       1, _C99 },
 864         { rts_powf,       1, "powf",         2, _C99 },
 865         { rts_sinf,       1, "sinf",         1, _C99 },
 866         { rts_cosf,       1, "cosf",         1, _C99 },
 867         { rts_tanf,       1, "tanf",         1, _C99 },
 868         { rts_asinf,      1, "asinf",        1, _C99 },
 869         { rts_acosf,      1, "acosf",        1, _C99 },
 870         { rts_atanf,      1, "atanf",        1, _C99 },
 871         { rts_sinhf,      1, "sinhf",        1, _C99 },
 872         { rts_coshf,      1, "coshf",        1, _C99 },
 873         { rts_tanhf,      1, "tanhf",        1, _C99 },
 874
 875         { rts_fabsl,      1, "fabsl",        1, _C99 },
 876         { rts_sqrtl,      1, "sqrtl",        1, _C99 },
 877         { rts_cbrtl,      1, "cbrtl",        1, _C99 },
 878         { rts_expl,       1, "expl",         1, _C99 },
 879         { rts_exp2l,      1, "exp2l",        1, _C99 },
 880         { rts_exp10l,     1, "exp10l",       1, _GNUC },
 881         { rts_logl,       1, "logl",         1, _C99 },
 882         { rts_log2l,      1, "log2l",        1, _C99 },
 883         { rts_log10l,     1, "log10l",       1, _C99 },
 884         { rts_powl,       1, "powl",         2, _C99 },
 885         { rts_sinl,       1, "sinl",         1, _C99 },
 886         { rts_cosl,       1, "cosl",         1, _C99 },
 887         { rts_tanl,       1, "tanl",         1, _C99 },
 888         { rts_asinl,      1, "asinl",        1, _C99 },
 889         { rts_acosl,      1, "acosl",        1, _C99 },
 890         { rts_atanl,      1, "atanl",        1, _C99 },
 891         { rts_sinhl,      1, "sinhl",        1, _C99 },
 892         { rts_coshl,      1, "coshl",        1, _C99 },
 893         { rts_tanhl,      1, "tanhl",        1, _C99 },
 894
 895         { rts_memcpy,     1, "memcpy",       3, _C89 },  /* HMM, man say its C99 */
 896         { rts_memset,     1, "memset",       3, _C89 },  /* HMM, man say its C99 */
 897         { rts_strcmp,     1, "strcmp",       2, _C89 },
 898         { rts_strncmp,    1, "strncmp",      3, _C89 }
 899 };
 900
 901 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
 902
 903 /**
 904  * Mangles an entity linker (ld) name for win32 usage.
 905  *
 906  * @param ent          the entity to be mangled
 907  * @param declaration  the declaration
 908  */
 909 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
 910 {
 911         ident *id;
 912
 913         if (is_Method_type(get_entity_type(ent)))
 914                 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
 915         else {
 916                 /* always add an underscore in win32 */
 917                 id = mangle(id_underscore, get_entity_ident(ent));
 918         }
 919
 920         decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
 921         if (decl_modifiers & DM_DLLIMPORT) {
 922                 /* add prefix for imported symbols */
 923                 id = mangle(id_imp, id);
 924         }
 925         return id;
 926 }
 927
 928 /**
 929  * Mangles an entity linker (ld) name for Linux ELF usage.
 930  *
 931  * @param ent          the entity to be mangled
 932  * @param declaration  the declaration
 933  */
 934 static ident *create_ld_ident_linux_elf(ir_entity *entity,
 935                                         declaration_t *declaration)
 936 {
 937         (void) declaration;
 938         return get_entity_ident(entity);
 939 }
 940
 941 /**
 942  * Mangles an entity linker (ld) name for Mach-O usage.
 943  *
 944  * @param ent          the entity to be mangled
 945  * @param declaration  the declaration
 946  */
 947 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
 948 {
 949         (void) declaration;
 950         ident *id = mangle(id_underscore, get_entity_ident(ent));
 951         return id;
 952 }
 953
 954 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
 955                                        declaration_t *declaration);
 956 create_ld_ident_func  create_ld_ident = create_ld_ident_linux_elf;
 957
 958 static ir_entity* get_function_entity(declaration_t *declaration)
 959 {
 960         if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
 961                 return declaration->v.entity;
 962         assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
 963
 964         symbol_t *symbol = declaration->symbol;
 965         ident    *id     = new_id_from_str(symbol->string);
 966
 967         ir_type  *global_type    = get_glob_type();
 968         ir_type  *ir_type_method = get_ir_type(declaration->type);
 969         assert(is_Method_type(ir_type_method));
 970
 971         dbg_info  *const dbgi   = get_dbg_info(&declaration->source_position);
 972         ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
 973         set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
 974         if(declaration->storage_class == STORAGE_CLASS_STATIC &&
 975                 declaration->init.statement == NULL) {
 976                 /* this entity was declared, but never defined */
 977                 set_entity_peculiarity(entity, peculiarity_description);
 978         }
 979         if(declaration->storage_class == STORAGE_CLASS_STATIC
 980                         || declaration->is_inline) {
 981                 set_entity_visibility(entity, visibility_local);
 982         } else if(declaration->init.statement != NULL) {
 983                 set_entity_visibility(entity, visibility_external_visible);
 984         } else {
 985                 set_entity_visibility(entity, visibility_external_allocated);
 986         }
 987         set_entity_allocation(entity, allocation_static);
 988
 989         declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
 990         declaration->v.entity         = entity;
 991
 992         /* We should check for file scope here, but as long as we compile C only
 993            this is not needed. */
 994         if (! firm_opt.freestanding) {
 995                 /* check for a known runtime function */
 996                 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
 997                         if (id != rts_idents[i])
 998                                 continue;
 999
1000                         /* ignore those rts functions not necessary needed for current mode */
1001                         if ((c_mode & rts_data[i].flags) == 0)
1002                                 continue;
1003                         assert(rts_entities[rts_data[i].id] == NULL);
1004                         rts_entities[rts_data[i].id] = entity;
1005                 }
1006         }
1007
1008         return entity;
1009 }
1010
1011 static ir_node *const_to_firm(const const_expression_t *cnst)
1012 {
1013         dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1014         ir_mode  *mode = get_ir_mode(cnst->base.type);
1015
1016         char    buf[128];
1017         tarval *tv;
1018         size_t  len;
1019         if(mode_is_float(mode)) {
1020                 tv = new_tarval_from_double(cnst->v.float_value, mode);
1021         } else {
1022                 if(mode_is_signed(mode)) {
1023                         len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1024                 } else {
1025                         len = snprintf(buf, sizeof(buf), "%llu",
1026                                        (unsigned long long) cnst->v.int_value);
1027                 }
1028                 tv = new_tarval_from_str(buf, len, mode);
1029         }
1030
1031         return new_d_Const(dbgi, mode, tv);
1032 }
1033
1034 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1035 {
1036         dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1037         ir_mode  *mode = get_ir_mode(cnst->base.type);
1038
1039         long long int v = 0;
1040         for (size_t i = 0; i < cnst->v.character.size; ++i) {
1041                 if (char_is_signed) {
1042                         v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1043                 } else {
1044                         v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1045                 }
1046         }
1047         char    buf[128];
1048         size_t  len = snprintf(buf, sizeof(buf), "%lld", v);
1049         tarval *tv = new_tarval_from_str(buf, len, mode);
1050
1051         return new_d_Const(dbgi, mode, tv);
1052 }
1053
1054 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1055 {
1056         dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1057         ir_mode  *mode = get_ir_mode(cnst->base.type);
1058
1059         long long int v = cnst->v.wide_character.begin[0];
1060
1061         char    buf[128];
1062         size_t  len = snprintf(buf, sizeof(buf), "%lld", v);
1063         tarval *tv = new_tarval_from_str(buf, len, mode);
1064
1065         return new_d_Const(dbgi, mode, tv);
1066 }
1067
1068 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1069                               ir_entity *entity)
1070 {
1071         assert(entity != NULL);
1072         union symconst_symbol sym;
1073         sym.entity_p = entity;
1074         return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1075 }
1076
1077 static ir_node *string_to_firm(const source_position_t *const src_pos,
1078                                const char *const id_prefix,
1079                                const string_t *const value)
1080 {
1081         ir_type  *const global_type = get_glob_type();
1082         dbg_info *const dbgi        = get_dbg_info(src_pos);
1083         ir_type  *const type        = new_d_type_array(id_unique("strtype.%u"), 1,
1084                                                        ir_type_const_char, dbgi);
1085
1086         ident     *const id     = id_unique(id_prefix);
1087         ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1088         set_entity_ld_ident(entity, id);
1089         set_entity_variability(entity, variability_constant);
1090         set_entity_allocation(entity, allocation_static);
1091
1092         ir_type *const elem_type = ir_type_const_char;
1093         ir_mode *const mode      = get_type_mode(elem_type);
1094
1095         const char* const string = value->begin;
1096         const size_t      slen   = value->size;
1097
1098         set_array_lower_bound_int(type, 0, 0);
1099         set_array_upper_bound_int(type, 0, slen);
1100         set_type_size_bytes(type, slen);
1101         set_type_state(type, layout_fixed);
1102
1103         tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1104         for(size_t i = 0; i < slen; ++i) {
1105                 tvs[i] = new_tarval_from_long(string[i], mode);
1106         }
1107
1108         set_array_entity_values(entity, tvs, slen);
1109         free(tvs);
1110
1111         return create_symconst(dbgi, mode_P_data, entity);
1112 }
1113
1114 static ir_node *string_literal_to_firm(
1115                 const string_literal_expression_t* literal)
1116 {
1117         return string_to_firm(&literal->base.source_position, "Lstr.%u",
1118                               &literal->value);
1119 }
1120
1121 static ir_node *wide_string_literal_to_firm(
1122         const wide_string_literal_expression_t* const literal)
1123 {
1124         ir_type *const global_type = get_glob_type();
1125         ir_type *const elem_type   = ir_type_wchar_t;
1126         dbg_info *const dbgi       = get_dbg_info(&literal->base.source_position);
1127         ir_type *const type        = new_d_type_array(id_unique("strtype.%u"), 1,
1128                                                     elem_type, dbgi);
1129
1130         ident     *const id     = id_unique("Lstr.%u");
1131         ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1132         set_entity_ld_ident(entity, id);
1133         set_entity_variability(entity, variability_constant);
1134         set_entity_allocation(entity, allocation_static);
1135
1136         ir_mode *const mode      = get_type_mode(elem_type);
1137
1138         const wchar_rep_t *const string = literal->value.begin;
1139         const size_t             slen   = literal->value.size;
1140
1141         set_array_lower_bound_int(type, 0, 0);
1142         set_array_upper_bound_int(type, 0, slen);
1143         set_type_size_bytes(type, slen);
1144         set_type_state(type, layout_fixed);
1145
1146         tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1147         for(size_t i = 0; i < slen; ++i) {
1148                 tvs[i] = new_tarval_from_long(string[i], mode);
1149         }
1150
1151         set_array_entity_values(entity, tvs, slen);
1152         free(tvs);
1153
1154         return create_symconst(dbgi, mode_P_data, entity);
1155 }
1156
1157 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1158                               dbg_info *const dbgi)
1159 {
1160         ir_type *irtype = get_ir_type(type);
1161         if (is_compound_type(irtype)
1162                         || is_Method_type(irtype)
1163                         || is_Array_type(irtype)) {
1164                 return addr;
1165         }
1166
1167         ir_mode *const mode     = get_type_mode(irtype);
1168         ir_node *const memory   = get_store();
1169         ir_node *const load     = new_d_Load(dbgi, memory, addr, mode);
1170         ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1171         ir_node *const load_res = new_d_Proj(dbgi, load, mode,   pn_Load_res);
1172
1173         if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1174                 set_Load_volatility(load, volatility_is_volatile);
1175         }
1176
1177         set_store(load_mem);
1178         return load_res;
1179 }
1180
1181 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1182 {
1183         ir_mode *mode = get_irn_mode(node);
1184
1185         if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1186                 return node;
1187         if (!mode_is_float(mode))
1188                 return node;
1189
1190         /* check if there is already a Conv */
1191         if (get_irn_op(node) == op_Conv) {
1192                 /* convert it into a strict Conv */
1193                 set_Conv_strict(node, 1);
1194                 return node;
1195         }
1196
1197         /* otherwise create a new one */
1198         return new_d_strictConv(dbgi, node, mode);
1199 }
1200
1201 static ir_node *get_global_var_address(dbg_info *const dbgi,
1202                                        const declaration_t *const decl)
1203 {
1204         assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1205
1206         ir_entity *const entity = decl->v.entity;
1207         switch ((storage_class_tag_t)decl->storage_class) {
1208                 case STORAGE_CLASS_THREAD:
1209                 case STORAGE_CLASS_THREAD_EXTERN:
1210                 case STORAGE_CLASS_THREAD_STATIC: {
1211                         ir_node *const no_mem = new_NoMem();
1212                         ir_node *const tls    = get_irg_tls(current_ir_graph);
1213                         return new_d_simpleSel(dbgi, no_mem, tls, entity);
1214                 }
1215
1216                 default:
1217                         return create_symconst(dbgi, mode_P_data, entity);
1218         }
1219 }
1220
1221 /* Returns the correct base address depending on whether it is a parameter or a
1222  * normal local variable */
1223 static ir_node *get_local_frame(ir_entity *const ent)
1224 {
1225         ir_graph      *const irg   = current_ir_graph;
1226         const ir_type *const owner = get_entity_owner(ent);
1227         if (owner == get_irg_frame_type(irg)) {
1228                 return get_irg_frame(irg);
1229         } else {
1230                 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1231                 return get_irg_value_param_base(irg);
1232         }
1233 }
1234
1235 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1236 {
1237         ir_mode *value_mode = get_irn_mode(value);
1238
1239         if (value_mode == dest_mode || is_Bad(value))
1240                 return value;
1241
1242         if(dest_mode == mode_b) {
1243                 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1244                 ir_node *cmp  = new_d_Cmp(dbgi, value, zero);
1245                 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1246                 return proj;
1247         }
1248
1249         return new_d_Conv(dbgi, value, dest_mode);
1250 }
1251
1252 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1253 {
1254         dbg_info      *dbgi        = get_dbg_info(&ref->base.source_position);
1255         declaration_t *declaration = ref->declaration;
1256         type_t        *type        = skip_typeref(declaration->type);
1257
1258         /* make sure the type is constructed */
1259         (void) get_ir_type(type);
1260
1261         switch((declaration_kind_t) declaration->declaration_kind) {
1262         case DECLARATION_KIND_TYPE:
1263         case DECLARATION_KIND_UNKNOWN:
1264                 break;
1265
1266         case DECLARATION_KIND_ENUM_ENTRY: {
1267                 ir_mode *const mode = get_ir_mode(type);
1268                 return new_Const(mode, declaration->v.enum_val);
1269         }
1270
1271         case DECLARATION_KIND_LOCAL_VARIABLE: {
1272                 ir_mode *const mode = get_ir_mode(type);
1273                 return get_value(declaration->v.value_number, mode);
1274         }
1275         case DECLARATION_KIND_FUNCTION: {
1276                 ir_mode *const mode = get_ir_mode(type);
1277                 return create_symconst(dbgi, mode, declaration->v.entity);
1278         }
1279         case DECLARATION_KIND_GLOBAL_VARIABLE: {
1280                 ir_node *const addr   = get_global_var_address(dbgi, declaration);
1281                 return deref_address(declaration->type, addr, dbgi);
1282         }
1283
1284         case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1285                 ir_entity *entity = declaration->v.entity;
1286                 ir_node   *frame  = get_local_frame(entity);
1287                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1288                 return deref_address(declaration->type, sel, dbgi);
1289         }
1290
1291         case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1292                 return declaration->v.vla_base;
1293
1294         case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1295         case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1296         case DECLARATION_KIND_COMPOUND_MEMBER:
1297         case DECLARATION_KIND_LABEL_BLOCK:
1298                 panic("not implemented reference type");
1299         }
1300
1301         panic("reference to declaration with unknown type found");
1302 }
1303
1304 static ir_node *reference_addr(const reference_expression_t *ref)
1305 {
1306         dbg_info      *dbgi        = get_dbg_info(&ref->base.source_position);
1307         declaration_t *declaration = ref->declaration;
1308
1309         switch((declaration_kind_t) declaration->declaration_kind) {
1310         case DECLARATION_KIND_TYPE:
1311         case DECLARATION_KIND_UNKNOWN:
1312                 break;
1313         case DECLARATION_KIND_LOCAL_VARIABLE:
1314                 panic("local variable without entity has no address");
1315         case DECLARATION_KIND_FUNCTION: {
1316                 type_t *const  type = skip_typeref(ref->base.type);
1317                 ir_mode *const mode = get_ir_mode(type);
1318                 return create_symconst(dbgi, mode, declaration->v.entity);
1319         }
1320         case DECLARATION_KIND_GLOBAL_VARIABLE: {
1321                 ir_node *const addr = get_global_var_address(dbgi, declaration);
1322                 return addr;
1323         }
1324         case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1325                 ir_entity *entity = declaration->v.entity;
1326                 ir_node   *frame  = get_local_frame(entity);
1327                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1328
1329                 return sel;
1330         }
1331
1332         case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1333                 return declaration->v.vla_base;
1334
1335         case DECLARATION_KIND_ENUM_ENTRY:
1336                 panic("trying to reference enum entry");
1337
1338         case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1339         case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1340         case DECLARATION_KIND_COMPOUND_MEMBER:
1341         case DECLARATION_KIND_LABEL_BLOCK:
1342                 panic("not implemented reference type");
1343         }
1344
1345         panic("reference to declaration with unknown type found");
1346 }
1347
1348 static ir_node *process_builtin_call(const call_expression_t *call)
1349 {
1350         dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1351
1352         assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1353         builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1354
1355         type_t *type = skip_typeref(builtin->base.type);
1356         assert(is_type_pointer(type));
1357
1358         type_t   *function_type = skip_typeref(type->pointer.points_to);
1359         symbol_t *symbol        = builtin->symbol;
1360
1361         switch(symbol->ID) {
1362         case T___builtin_alloca: {
1363                 if(call->arguments == NULL || call->arguments->next != NULL) {
1364                         panic("invalid number of parameters on __builtin_alloca");
1365                 }
1366                 expression_t *argument = call->arguments->expression;
1367                 ir_node      *size     = expression_to_firm(argument);
1368
1369                 ir_node *store  = get_store();
1370                 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1371                                               stack_alloc);
1372                 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1373                 set_store(proj_m);
1374                 ir_node *res    = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1375
1376                 return res;
1377         }
1378         case T___builtin_huge_val: {
1379                 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1380                 tarval  *tv   = get_mode_infinite(mode);
1381                 ir_node *res  = new_d_Const(dbgi, mode, tv);
1382                 return   res;
1383         }
1384         case T___builtin_nan:
1385         case T___builtin_nanf:
1386         case T___builtin_nand: {
1387                 /* Ignore string for now... */
1388                 assert(is_type_function(function_type));
1389                 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1390                 tarval  *tv   = get_mode_NAN(mode);
1391                 ir_node *res  = new_d_Const(dbgi, mode, tv);
1392                 return res;
1393         }
1394         case T___builtin_va_end:
1395                 return NULL;
1396         default:
1397                 panic("Unsupported builtin found\n");
1398         }
1399 }
1400
1401 static ir_node *call_expression_to_firm(const call_expression_t *call)
1402 {
1403         assert(get_cur_block() != NULL);
1404
1405         expression_t *function = call->function;
1406         if(function->kind == EXPR_BUILTIN_SYMBOL) {
1407                 return process_builtin_call(call);
1408         }
1409         ir_node *callee = expression_to_firm(function);
1410
1411         type_t *type = skip_typeref(function->base.type);
1412         assert(is_type_pointer(type));
1413         pointer_type_t *pointer_type = &type->pointer;
1414         type_t         *points_to    = skip_typeref(pointer_type->points_to);
1415         assert(is_type_function(points_to));
1416         function_type_t *function_type = &points_to->function;
1417
1418         dbg_info *dbgi  = get_dbg_info(&call->base.source_position);
1419
1420         int      n_parameters = 0;
1421         ir_type *ir_method_type  = get_ir_type((type_t*) function_type);
1422         ir_type *new_method_type = NULL;
1423         if(function_type->variadic || function_type->unspecified_parameters) {
1424                 const call_argument_t *argument = call->arguments;
1425                 for( ; argument != NULL; argument = argument->next) {
1426                         ++n_parameters;
1427                 }
1428
1429                 /* we need to construct a new method type matching the call
1430                  * arguments... */
1431                 int n_res       = get_method_n_ress(ir_method_type);
1432                 dbg_info *dbgi  = get_dbg_info(&call->base.source_position);
1433                 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1434                                                     n_parameters, n_res, dbgi);
1435                 set_method_calling_convention(new_method_type,
1436                                get_method_calling_convention(ir_method_type));
1437                 set_method_additional_properties(new_method_type,
1438                                get_method_additional_properties(ir_method_type));
1439                 set_method_variadicity(new_method_type,
1440                                        get_method_variadicity(ir_method_type));
1441
1442                 for(int i = 0; i < n_res; ++i) {
1443                         set_method_res_type(new_method_type, i,
1444                                             get_method_res_type(ir_method_type, i));
1445                 }
1446                 argument = call->arguments;
1447                 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1448                         expression_t *expression = argument->expression;
1449                         ir_type      *irtype     = get_ir_type(expression->base.type);
1450                         set_method_param_type(new_method_type, i, irtype);
1451                 }
1452                 ir_method_type = new_method_type;
1453         } else {
1454                 n_parameters = get_method_n_params(ir_method_type);
1455         }
1456
1457         ir_node *in[n_parameters];
1458
1459         const call_argument_t *argument = call->arguments;
1460         for(int n = 0; n < n_parameters; ++n) {
1461                 expression_t *expression = argument->expression;
1462                 ir_node      *arg_node   = expression_to_firm(expression);
1463
1464                 arg_node = do_strict_conv(dbgi, arg_node);
1465
1466                 in[n] = arg_node;
1467
1468                 argument = argument->next;
1469         }
1470
1471         ir_node  *store = get_store();
1472         ir_node  *node  = new_d_Call(dbgi, store, callee, n_parameters, in,
1473                                      ir_method_type);
1474         ir_node  *mem   = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1475         set_store(mem);
1476
1477         type_t  *return_type = skip_typeref(function_type->return_type);
1478         ir_node *result      = NULL;
1479
1480         if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1481                 ir_mode *mode;
1482                 if(is_type_scalar(return_type)) {
1483                         mode = get_ir_mode(return_type);
1484                 } else {
1485                         mode = mode_P_data;
1486                 }
1487                 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1488                 result           = new_d_Proj(dbgi, resproj, mode, 0);
1489         }
1490
1491         return result;
1492 }
1493
1494 static void statement_to_firm(statement_t *statement);
1495 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1496
1497 static ir_node *expression_to_addr(const expression_t *expression);
1498 static void create_condition_evaluation(const expression_t *expression,
1499                                         ir_node *true_block,
1500                                         ir_node *false_block);
1501
1502 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1503                          ir_node *value)
1504 {
1505         value = do_strict_conv(dbgi, value);
1506
1507         ir_node *memory = get_store();
1508
1509         if(is_type_scalar(type)) {
1510                 ir_node  *store     = new_d_Store(dbgi, memory, addr, value);
1511                 ir_node  *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1512                 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1513                         set_Store_volatility(store, volatility_is_volatile);
1514                 set_store(store_mem);
1515         } else {
1516                 ir_type *irtype    = get_ir_type(type);
1517                 ir_node *copyb     = new_d_CopyB(dbgi, memory, addr, value, irtype);
1518                 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1519                 set_store(copyb_mem);
1520         }
1521 }
1522
1523 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1524 {
1525         tarval *all_one   = get_mode_all_one(mode);
1526         int     mode_size = get_mode_size_bits(mode);
1527
1528         assert(offset >= 0 && size >= 0);
1529         assert(offset + size <= mode_size);
1530         if(size == mode_size) {
1531                 return all_one;
1532         }
1533
1534         long    shiftr    = get_mode_size_bits(mode) - size;
1535         long    shiftl    = offset;
1536         tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1537         tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1538         tarval *mask0     = tarval_shr(all_one, tv_shiftr);
1539         tarval *mask1     = tarval_shl(mask0, tv_shiftl);
1540
1541         return mask1;
1542 }
1543
1544 static void bitfield_store_to_firm(const unary_expression_t *expression,
1545                                    ir_node *value)
1546 {
1547         expression_t *select = expression->value;
1548         assert(select->kind == EXPR_SELECT);
1549         type_t       *type   = select->base.type;
1550         assert(type->kind == TYPE_BITFIELD);
1551         ir_mode      *mode   = get_ir_mode(type->bitfield.base_type);
1552         ir_node      *addr   = expression_to_addr(select);
1553
1554         assert(get_irn_mode(value) == mode || is_Bad(value));
1555
1556         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1557
1558         /* kill upper bits of value and shift to right position */
1559         ir_entity *entity       = select->select.compound_entry->v.entity;
1560         int        bitoffset    = get_entity_offset_bits_remainder(entity);
1561         ir_type   *entity_type  = get_entity_type(entity);
1562         int        bitsize      = get_mode_size_bits(get_type_mode(entity_type));
1563
1564         tarval  *mask            = create_bitfield_mask(mode, 0, bitsize);
1565         ir_node *mask_node       = new_d_Const(dbgi, mode, mask);
1566         ir_node *value_masked    = new_d_And(dbgi, value, mask_node, mode);
1567         tarval  *shiftl          = new_tarval_from_long(bitoffset, mode_uint);
1568         ir_node *shiftcount      = new_d_Const(dbgi, mode_uint, shiftl);
1569         ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1570
1571         /* load current value */
1572         ir_node  *mem             = get_store();
1573         ir_node  *load            = new_d_Load(dbgi, mem, addr, mode);
1574         ir_node  *load_mem        = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1575         ir_node  *load_res        = new_d_Proj(dbgi, load, mode, pn_Load_res);
1576         tarval   *shift_mask      = create_bitfield_mask(mode, bitoffset, bitsize);
1577         tarval   *inv_mask        = tarval_not(shift_mask);
1578         ir_node  *inv_mask_node   = new_d_Const(dbgi, mode, inv_mask);
1579         ir_node  *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1580
1581         /* construct new value and store */
1582         ir_node *new_val   = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1583         ir_node *store     = new_d_Store(dbgi, load_mem, addr, new_val);
1584         ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1585         set_store(store_mem);
1586
1587         if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1588                 set_Load_volatility(load, volatility_is_volatile);
1589                 set_Store_volatility(store, volatility_is_volatile);
1590         }
1591 }
1592
1593 static void set_value_for_expression(const expression_t *expression,
1594                                      ir_node *value)
1595 {
1596         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1597         value          = do_strict_conv(dbgi, value);
1598
1599         if(expression->kind == EXPR_REFERENCE) {
1600                 const reference_expression_t *ref = &expression->reference;
1601
1602                 declaration_t *declaration = ref->declaration;
1603                 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1604                 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1605                         set_value(declaration->v.value_number, value);
1606                         return;
1607                 }
1608         }
1609
1610         if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1611                 bitfield_store_to_firm(&expression->unary, value);
1612                 return;
1613         }
1614
1615         ir_node *addr = expression_to_addr(expression);
1616         type_t  *type = skip_typeref(expression->base.type);
1617         assign_value(dbgi, addr, type, value);
1618 }
1619
1620 static ir_node *create_incdec(const unary_expression_t *expression)
1621 {
1622         dbg_info     *dbgi  = get_dbg_info(&expression->base.source_position);
1623         type_t       *type  = skip_typeref(expression->base.type);
1624         ir_mode      *mode  = get_ir_mode(type);
1625         expression_t *value = expression->value;
1626
1627         ir_node *value_node = expression_to_firm(value);
1628
1629         ir_node *offset;
1630         if(is_type_pointer(type)) {
1631                 pointer_type_t *pointer_type = &type->pointer;
1632                 offset                       = get_type_size(pointer_type->points_to);
1633         } else {
1634                 assert(is_type_arithmetic(type));
1635                 offset = new_Const(mode, get_mode_one(mode));
1636         }
1637
1638         switch(expression->base.kind) {
1639         case EXPR_UNARY_POSTFIX_INCREMENT: {
1640                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1641                 set_value_for_expression(value, new_value);
1642                 return value_node;
1643         }
1644         case EXPR_UNARY_POSTFIX_DECREMENT: {
1645                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1646                 set_value_for_expression(value, new_value);
1647                 return value_node;
1648         }
1649         case EXPR_UNARY_PREFIX_INCREMENT: {
1650                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1651                 set_value_for_expression(value, new_value);
1652                 return new_value;
1653         }
1654         case EXPR_UNARY_PREFIX_DECREMENT: {
1655                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1656                 set_value_for_expression(value, new_value);
1657                 return new_value;
1658         }
1659         default:
1660                 panic("no incdec expr in create_incdec");
1661                 return NULL;
1662         }
1663 }
1664
1665 static bool is_local_variable(expression_t *expression)
1666 {
1667         if (expression->kind != EXPR_REFERENCE)
1668                 return false;
1669         reference_expression_t *ref_expr    = &expression->reference;
1670         declaration_t          *declaration = ref_expr->declaration;
1671         return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1672 }
1673
1674 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1675 {
1676         switch(kind) {
1677         case EXPR_BINARY_EQUAL:         return pn_Cmp_Eq;
1678         case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1679         case EXPR_BINARY_NOTEQUAL:
1680                 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1681         case EXPR_BINARY_ISLESS:
1682         case EXPR_BINARY_LESS:          return pn_Cmp_Lt;
1683         case EXPR_BINARY_ISLESSEQUAL:
1684         case EXPR_BINARY_LESSEQUAL:     return pn_Cmp_Le;
1685         case EXPR_BINARY_ISGREATER:
1686         case EXPR_BINARY_GREATER:       return pn_Cmp_Gt;
1687         case EXPR_BINARY_ISGREATEREQUAL:
1688         case EXPR_BINARY_GREATEREQUAL:  return pn_Cmp_Ge;
1689         case EXPR_BINARY_ISUNORDERED:   return pn_Cmp_Uo;
1690
1691         default:
1692                 break;
1693         }
1694         panic("trying to get pn_Cmp from non-comparison binexpr type");
1695 }
1696
1697 /**
1698  * Handle the assume optimizer hint: check if a Confirm
1699  * node can be created.
1700  *
1701  * @param dbi    debug info
1702  * @param expr   the IL assume expression
1703  *
1704  * we support here only some simple cases:
1705  *  - var rel const
1706  *  - const rel val
1707  *  - var rel var
1708  */
1709 static ir_node *handle_assume_compare(dbg_info *dbi,
1710                                       const binary_expression_t *expression)
1711 {
1712         expression_t  *op1 = expression->left;
1713         expression_t  *op2 = expression->right;
1714         declaration_t *var2, *var = NULL;
1715         ir_node       *res = NULL;
1716         pn_Cmp         cmp_val;
1717
1718         cmp_val = get_pnc(expression->base.kind, op1->base.type);
1719
1720         if (is_local_variable(op1) && is_local_variable(op2)) {
1721         var  = op1->reference.declaration;
1722             var2 = op2->reference.declaration;
1723
1724                 type_t  *const type = skip_typeref(var->type);
1725                 ir_mode *const mode = get_ir_mode(type);
1726
1727                 ir_node *const irn1 = get_value(var->v.value_number, mode);
1728                 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1729
1730                 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1731                 set_value(var2->v.value_number, res);
1732
1733                 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1734                 set_value(var->v.value_number, res);
1735
1736                 return res;
1737         }
1738
1739         expression_t *con;
1740         if (is_local_variable(op1) && is_constant_expression(op2)) {
1741                 var = op1->reference.declaration;
1742                 con = op2;
1743         } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1744                 cmp_val = get_inversed_pnc(cmp_val);
1745                 var = op2->reference.declaration;
1746                 con = op1;
1747         }
1748
1749         if (var != NULL) {
1750                 type_t  *const type = skip_typeref(var->type);
1751                 ir_mode *const mode = get_ir_mode(type);
1752
1753                 res = get_value(var->v.value_number, mode);
1754                 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1755                 set_value(var->v.value_number, res);
1756         }
1757         return res;
1758 }
1759
1760 /**
1761  * Handle the assume optimizer hint.
1762  *
1763  * @param dbi    debug info
1764  * @param expr   the IL assume expression
1765  */
1766 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1767         switch(expression->kind) {
1768         case EXPR_BINARY_EQUAL:
1769         case EXPR_BINARY_NOTEQUAL:
1770         case EXPR_BINARY_LESS:
1771         case EXPR_BINARY_LESSEQUAL:
1772         case EXPR_BINARY_GREATER:
1773         case EXPR_BINARY_GREATEREQUAL:
1774                 return handle_assume_compare(dbi, &expression->binary);
1775         default:
1776                 return NULL;
1777         }
1778 }
1779
1780 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1781 {
1782         expression_t *select = expression->value;
1783         assert(select->kind == EXPR_SELECT);
1784
1785         type_t   *type     = select->base.type;
1786         assert(type->kind == TYPE_BITFIELD);
1787         ir_mode  *mode     = get_ir_mode(type->bitfield.base_type);
1788         dbg_info *dbgi     = get_dbg_info(&expression->base.source_position);
1789         ir_node  *addr     = expression_to_addr(select);
1790         ir_node  *mem      = get_store();
1791         ir_node  *load     = new_d_Load(dbgi, mem, addr, mode);
1792         ir_node  *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1793         ir_node  *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1794
1795         load_res           = create_conv(dbgi, load_res, mode_int);
1796
1797         set_store(load_mem);
1798
1799         /* kill upper bits */
1800         ir_entity *entity       = select->select.compound_entry->v.entity;
1801         int        bitoffset    = get_entity_offset_bits_remainder(entity);
1802         ir_type   *entity_type  = get_entity_type(entity);
1803         int        bitsize      = get_mode_size_bits(get_type_mode(entity_type));
1804         long       shift_bitsl  = machine_size - bitoffset - bitsize;
1805         assert(shift_bitsl >= 0);
1806         tarval    *tvl          = new_tarval_from_long(shift_bitsl, mode_uint);
1807         ir_node   *countl       = new_d_Const(dbgi, mode_uint, tvl);
1808         ir_node   *shiftl       = new_d_Shl(dbgi, load_res, countl, mode_int);
1809
1810         long       shift_bitsr  = bitoffset + shift_bitsl;
1811         assert(shift_bitsr <= (long) machine_size);
1812         tarval    *tvr          = new_tarval_from_long(shift_bitsr, mode_uint);
1813         ir_node   *countr       = new_d_Const(dbgi, mode_uint, tvr);
1814         ir_node   *shiftr;
1815         if(mode_is_signed(mode)) {
1816                 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1817         } else {
1818                 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1819         }
1820
1821         return create_conv(dbgi, shiftr, mode);
1822 }
1823
1824 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1825 {
1826         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1827         type_t   *type = skip_typeref(expression->base.type);
1828
1829         if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1830                 return expression_to_addr(expression->value);
1831
1832         const expression_t *value = expression->value;
1833
1834         switch(expression->base.kind) {
1835         case EXPR_UNARY_NEGATE: {
1836                 ir_node *value_node = expression_to_firm(value);
1837                 ir_mode *mode = get_ir_mode(type);
1838                 return new_d_Minus(dbgi, value_node, mode);
1839         }
1840         case EXPR_UNARY_PLUS:
1841                 return expression_to_firm(value);
1842         case EXPR_UNARY_BITWISE_NEGATE: {
1843                 ir_node *value_node = expression_to_firm(value);
1844                 ir_mode *mode = get_ir_mode(type);
1845                 return new_d_Not(dbgi, value_node, mode);
1846         }
1847         case EXPR_UNARY_NOT: {
1848                 ir_node *value_node = expression_to_firm(value);
1849                 ir_mode *mode = get_ir_mode(type);
1850                 if(get_irn_mode(value_node) != mode_b) {
1851                         value_node = create_conv(dbgi, value_node, mode_b);
1852                 }
1853                 value_node = new_d_Not(dbgi, value_node, mode_b);
1854                 if(mode != mode_b) {
1855                         value_node = create_conv(dbgi, value_node, mode);
1856                 }
1857                 return value_node;
1858         }
1859         case EXPR_UNARY_DEREFERENCE: {
1860                 ir_node *value_node = expression_to_firm(value);
1861                 type_t  *value_type = skip_typeref(value->base.type);
1862                 assert(is_type_pointer(value_type));
1863                 type_t  *points_to  = value_type->pointer.points_to;
1864                 return deref_address(points_to, value_node, dbgi);
1865         }
1866         case EXPR_UNARY_POSTFIX_INCREMENT:
1867         case EXPR_UNARY_POSTFIX_DECREMENT:
1868         case EXPR_UNARY_PREFIX_INCREMENT:
1869         case EXPR_UNARY_PREFIX_DECREMENT:
1870                 return create_incdec(expression);
1871         case EXPR_UNARY_CAST: {
1872                 ir_node *value_node = expression_to_firm(value);
1873                 if(is_type_scalar(type)) {
1874                         ir_mode *mode = get_ir_mode(type);
1875                         ir_node *node = create_conv(dbgi, value_node, mode);
1876                         node = do_strict_conv(dbgi, node);
1877                         return node;
1878                 } else {
1879                         /* make sure firm type is constructed */
1880                         (void) get_ir_type(type);
1881                         return value_node;
1882                 }
1883         }
1884         case EXPR_UNARY_CAST_IMPLICIT: {
1885                 ir_node *value_node = expression_to_firm(value);
1886                 if(is_type_scalar(type)) {
1887                         ir_mode *mode = get_ir_mode(type);
1888                         return create_conv(dbgi, value_node, mode);
1889                 } else {
1890                         return value_node;
1891                 }
1892         }
1893         case EXPR_UNARY_ASSUME:
1894                 if(firm_opt.confirm)
1895                         return handle_assume(dbgi, value);
1896                 else
1897                         return NULL;
1898         case EXPR_UNARY_BITFIELD_EXTRACT:
1899                 return bitfield_extract_to_firm(expression);
1900
1901         default:
1902                 break;
1903         }
1904         panic("invalid UNEXPR type found");
1905 }
1906
1907 static ir_node *produce_condition_result(const expression_t *expression,
1908                                          dbg_info *dbgi)
1909 {
1910         ir_mode *mode      = get_ir_mode(expression->base.type);
1911         ir_node *cur_block = get_cur_block();
1912
1913         ir_node *one_block = new_immBlock();
1914         ir_node *one       = new_Const(mode, get_mode_one(mode));
1915         ir_node *jmp_one   = new_d_Jmp(dbgi);
1916
1917         ir_node *zero_block = new_immBlock();
1918         ir_node *zero       = new_Const(mode, get_mode_null(mode));
1919         ir_node *jmp_zero   = new_d_Jmp(dbgi);
1920
1921         set_cur_block(cur_block);
1922         create_condition_evaluation(expression, one_block, zero_block);
1923         mature_immBlock(one_block);
1924         mature_immBlock(zero_block);
1925
1926         ir_node *common_block = new_immBlock();
1927         add_immBlock_pred(common_block, jmp_one);
1928         add_immBlock_pred(common_block, jmp_zero);
1929         mature_immBlock(common_block);
1930
1931         ir_node *in[2] = { one, zero };
1932         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
1933
1934         return val;
1935 }
1936
1937 static ir_node *create_lazy_op(const binary_expression_t *expression)
1938 {
1939         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1940         type_t   *type = expression->base.type;
1941         ir_mode  *mode = get_ir_mode(type);
1942
1943         if(is_constant_expression(expression->left)) {
1944                 long val = fold_constant(expression->left);
1945                 expression_kind_t ekind = expression->base.kind;
1946                 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1947                                 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1948                         return expression_to_firm(expression->right);
1949                 } else {
1950                         assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1951                                         || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1952                         return new_Const(mode, get_mode_one(mode));
1953                 }
1954         }
1955
1956         return produce_condition_result((const expression_t*) expression, dbgi);
1957 }
1958
1959 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1960                                             ir_node *right, ir_mode *mode);
1961
1962 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1963                                         create_arithmetic_func func)
1964 {
1965         dbg_info *dbgi  = get_dbg_info(&expression->base.source_position);
1966         ir_node  *left  = expression_to_firm(expression->left);
1967         ir_node  *right = expression_to_firm(expression->right);
1968         type_t   *type  = expression->right->base.type;
1969         /* be careful with the modes, because in arithmetic assign nodes only
1970          * the right operand has the mode of the arithmetic already */
1971         ir_mode  *mode  = get_ir_mode(type);
1972         left            = create_conv(dbgi, left, mode);
1973         ir_node  *res   = func(dbgi, left, right, mode);
1974
1975         return res;
1976 }
1977
1978 static ir_node *pointer_arithmetic(ir_node  *const pointer,
1979                                    ir_node  *      integer,
1980                                    type_t   *const type,
1981                                    dbg_info *const dbgi,
1982                                    const create_arithmetic_func func)
1983 {
1984         pointer_type_t *const pointer_type = &type->pointer;
1985         type_t         *const points_to    = pointer_type->points_to;
1986         const unsigned        elem_size    = get_type_size_const(points_to);
1987
1988         assert(elem_size >= 1);
1989         if (elem_size > 1) {
1990                 integer             = create_conv(dbgi, integer, mode_int);
1991                 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1992                 ir_node *const mul  = new_d_Mul(dbgi, integer, cnst, mode_int);
1993                 integer = mul;
1994         }
1995
1996         ir_mode *const mode = get_ir_mode(type);
1997         return func(dbgi, pointer, integer, mode);
1998 }
1999
2000 static ir_node *create_arithmetic_assign_binop(
2001                 const binary_expression_t *expression, create_arithmetic_func func)
2002 {
2003         dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2004         type_t   *const type = skip_typeref(expression->base.type);
2005         ir_node  *value;
2006
2007         if (is_type_pointer(type)) {
2008                 ir_node *const pointer = expression_to_firm(expression->left);
2009                 ir_node *      integer = expression_to_firm(expression->right);
2010                 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2011         } else {
2012                 value = create_arithmetic_binop(expression, func);
2013         }
2014
2015         ir_mode *const mode = get_ir_mode(type);
2016         value = create_conv(dbgi, value, mode);
2017         set_value_for_expression(expression->left, value);
2018
2019         return value;
2020 }
2021
2022 static ir_node *create_add(const binary_expression_t *expression)
2023 {
2024         dbg_info *dbgi  = get_dbg_info(&expression->base.source_position);
2025         ir_node  *left  = expression_to_firm(expression->left);
2026         ir_node  *right = expression_to_firm(expression->right);
2027         type_t   *type  = expression->base.type;
2028
2029         expression_t *expr_left  = expression->left;
2030         expression_t *expr_right = expression->right;
2031         type_t       *type_left  = skip_typeref(expr_left->base.type);
2032         type_t       *type_right = skip_typeref(expr_right->base.type);
2033
2034         if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2035                 ir_mode *const mode = get_ir_mode(type);
2036                 return new_d_Add(dbgi, left, right, mode);
2037         }
2038
2039         if (is_type_pointer(type_left)) {
2040                 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2041         } else {
2042                 assert(is_type_pointer(type_right));
2043                 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2044         }
2045 }
2046
2047 static ir_node *create_sub(const binary_expression_t *expression)
2048 {
2049         dbg_info *const dbgi  = get_dbg_info(&expression->base.source_position);
2050         expression_t *const expr_left  = expression->left;
2051         expression_t *const expr_right = expression->right;
2052         ir_node      *const left       = expression_to_firm(expr_left);
2053         ir_node      *const right      = expression_to_firm(expr_right);
2054         type_t       *const type       = expression->base.type;
2055         type_t       *const type_left  = skip_typeref(expr_left->base.type);
2056         type_t       *const type_right = skip_typeref(expr_right->base.type);
2057
2058         if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2059                 ir_mode *const mode = get_ir_mode(type);
2060                 return new_d_Sub(dbgi, left, right, mode);
2061         } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2062                 const pointer_type_t *const ptr_type = &type_left->pointer;
2063
2064                 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2065                 ir_mode *const mode      = get_ir_mode(type);
2066                 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2067                 ir_node *const sub       = new_d_Sub(dbgi, left, right, mode);
2068                 ir_node *const no_mem    = new_NoMem();
2069                 ir_node *const div       = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2070                                                        op_pin_state_floats);
2071                 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2072         }
2073
2074         assert(is_type_pointer(type_left));
2075         return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2076 }
2077
2078 static ir_node *create_shift(const binary_expression_t *expression)
2079 {
2080         dbg_info *dbgi  = get_dbg_info(&expression->base.source_position);
2081         ir_node  *left  = expression_to_firm(expression->left);
2082         ir_node  *right = expression_to_firm(expression->right);
2083         type_t   *type  = expression->base.type;
2084         ir_mode  *mode  = get_ir_mode(type);
2085
2086         /* firm always wants the shift count to be unsigned */
2087         right = create_conv(dbgi, right, mode_uint);
2088
2089         ir_node *res;
2090
2091         switch(expression->base.kind) {
2092         case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2093         case EXPR_BINARY_SHIFTLEFT:
2094                 res = new_d_Shl(dbgi, left, right, mode);
2095                 break;
2096         case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2097         case EXPR_BINARY_SHIFTRIGHT: {
2098                  expression_t *expr_left = expression->left;
2099                  type_t       *type_left = skip_typeref(expr_left->base.type);
2100
2101                  if(is_type_signed(type_left)) {
2102                         res = new_d_Shrs(dbgi, left, right, mode);
2103                  } else {
2104                          res = new_d_Shr(dbgi, left, right, mode);
2105                  }
2106                  break;
2107         }
2108         default:
2109                 panic("create shift op called for non-shift op");
2110         }
2111
2112         return res;
2113 }
2114
2115
2116 static ir_node *create_divmod(const binary_expression_t *expression)
2117 {
2118         dbg_info *dbgi  = get_dbg_info(&expression->base.source_position);
2119         ir_node  *left  = expression_to_firm(expression->left);
2120         ir_node  *right = expression_to_firm(expression->right);
2121         ir_node  *pin   = new_Pin(new_NoMem());
2122         /* be careful with the modes, because in arithmetic assign nodes only
2123          * the right operand has the mode of the arithmetic already */
2124         type_t   *type  = expression->right->base.type;
2125         ir_mode  *mode  = get_ir_mode(type);
2126         left            = create_conv(dbgi, left, mode);
2127         ir_node  *op;
2128         ir_node  *res;
2129
2130         switch (expression->base.kind) {
2131         case EXPR_BINARY_DIV:
2132         case EXPR_BINARY_DIV_ASSIGN:
2133                 if(mode_is_float(mode)) {
2134                         op  = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2135                         res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2136                 } else {
2137                         op  = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2138                         res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2139                 }
2140                 break;
2141
2142         case EXPR_BINARY_MOD:
2143         case EXPR_BINARY_MOD_ASSIGN:
2144                 assert(!mode_is_float(mode));
2145                 op  = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2146                 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2147                 break;
2148
2149         default: panic("unexpected binary expression type in create_divmod()");
2150         }
2151
2152         return res;
2153 }
2154
2155 static ir_node *create_arithmetic_assign_divmod(
2156                 const binary_expression_t *expression)
2157 {
2158         ir_node  *      value = create_divmod(expression);
2159         dbg_info *const dbgi  = get_dbg_info(&expression->base.source_position);
2160         type_t   *const type  = expression->base.type;
2161         ir_mode  *const mode  = get_ir_mode(type);
2162
2163         assert(type->kind != TYPE_POINTER);
2164
2165         value = create_conv(dbgi, value, mode);
2166         set_value_for_expression(expression->left, value);
2167
2168         return value;
2169 }
2170
2171 static ir_node *create_arithmetic_assign_shift(
2172                 const binary_expression_t *expression)
2173 {
2174         ir_node  *      value = create_shift(expression);
2175         dbg_info *const dbgi  = get_dbg_info(&expression->base.source_position);
2176         type_t   *const type  = expression->base.type;
2177         ir_mode  *const mode  = get_ir_mode(type);
2178
2179         value = create_conv(dbgi, value, mode);
2180         set_value_for_expression(expression->left, value);
2181
2182         return value;
2183 }
2184
2185 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2186 {
2187         expression_kind_t kind = expression->base.kind;
2188
2189         switch(kind) {
2190         case EXPR_BINARY_EQUAL:
2191         case EXPR_BINARY_NOTEQUAL:
2192         case EXPR_BINARY_LESS:
2193         case EXPR_BINARY_LESSEQUAL:
2194         case EXPR_BINARY_GREATER:
2195         case EXPR_BINARY_GREATEREQUAL:
2196         case EXPR_BINARY_ISGREATER:
2197         case EXPR_BINARY_ISGREATEREQUAL:
2198         case EXPR_BINARY_ISLESS:
2199         case EXPR_BINARY_ISLESSEQUAL:
2200         case EXPR_BINARY_ISLESSGREATER:
2201         case EXPR_BINARY_ISUNORDERED: {
2202                 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2203                 ir_node *left  = expression_to_firm(expression->left);
2204                 ir_node *right = expression_to_firm(expression->right);
2205                 ir_node *cmp   = new_d_Cmp(dbgi, left, right);
2206                 long     pnc   = get_pnc(kind, expression->left->base.type);
2207                 ir_node *proj  = new_d_Proj(dbgi, cmp, mode_b, pnc);
2208                 return proj;
2209         }
2210         case EXPR_BINARY_ASSIGN: {
2211                 ir_node *right = expression_to_firm(expression->right);
2212                 set_value_for_expression(expression->left, right);
2213
2214                 return right;
2215         }
2216         case EXPR_BINARY_ADD:
2217                 return create_add(expression);
2218         case EXPR_BINARY_SUB:
2219                 return create_sub(expression);
2220         case EXPR_BINARY_MUL:
2221                 return create_arithmetic_binop(expression, new_d_Mul);
2222         case EXPR_BINARY_BITWISE_AND:
2223                 return create_arithmetic_binop(expression, new_d_And);
2224         case EXPR_BINARY_BITWISE_OR:
2225                 return create_arithmetic_binop(expression, new_d_Or);
2226         case EXPR_BINARY_BITWISE_XOR:
2227                 return create_arithmetic_binop(expression, new_d_Eor);
2228         case EXPR_BINARY_SHIFTLEFT:
2229         case EXPR_BINARY_SHIFTRIGHT:
2230                 return create_shift(expression);
2231         case EXPR_BINARY_DIV:
2232         case EXPR_BINARY_MOD:
2233                 return create_divmod(expression);
2234         case EXPR_BINARY_LOGICAL_AND:
2235         case EXPR_BINARY_LOGICAL_OR:
2236                 return create_lazy_op(expression);
2237         case EXPR_BINARY_COMMA:
2238                 expression_to_firm(expression->left);
2239                 return expression_to_firm(expression->right);
2240         case EXPR_BINARY_ADD_ASSIGN:
2241                 return create_arithmetic_assign_binop(expression, new_d_Add);
2242         case EXPR_BINARY_SUB_ASSIGN:
2243                 return create_arithmetic_assign_binop(expression, new_d_Sub);
2244         case EXPR_BINARY_MUL_ASSIGN:
2245                 return create_arithmetic_assign_binop(expression, new_d_Mul);
2246         case EXPR_BINARY_MOD_ASSIGN:
2247         case EXPR_BINARY_DIV_ASSIGN:
2248                 return create_arithmetic_assign_divmod(expression);
2249         case EXPR_BINARY_BITWISE_AND_ASSIGN:
2250                 return create_arithmetic_assign_binop(expression, new_d_And);
2251         case EXPR_BINARY_BITWISE_OR_ASSIGN:
2252                 return create_arithmetic_assign_binop(expression, new_d_Or);
2253         case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2254                 return create_arithmetic_assign_binop(expression, new_d_Eor);
2255         case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2256         case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2257                 return create_arithmetic_assign_shift(expression);
2258         case EXPR_BINARY_BUILTIN_EXPECT:
2259                 return expression_to_firm(expression->left);
2260         default:
2261                 panic("TODO binexpr type");
2262         }
2263 }
2264
2265 static ir_node *array_access_addr(const array_access_expression_t *expression)
2266 {
2267         dbg_info *dbgi      = get_dbg_info(&expression->base.source_position);
2268         ir_node  *base_addr = expression_to_firm(expression->array_ref);
2269         ir_node  *offset    = expression_to_firm(expression->index);
2270
2271         /* Matze: it would be better to force mode to mode_uint as this creates more
2272          * opportunities for CSE. Unforunately we still have some optimisations that
2273          * are too conservative in the presence of convs. So we better go with the
2274          * mode of offset and avoid the conv */
2275         ir_mode  *mode = get_irn_mode(offset);
2276         offset         = create_conv(dbgi, offset, mode);
2277
2278         type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2279         assert(is_type_pointer(ref_type));
2280         pointer_type_t *pointer_type = &ref_type->pointer;
2281
2282         ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2283         elem_size_const          = create_conv(dbgi, elem_size_const, mode);
2284         ir_node *real_offset     = new_d_Mul(dbgi, offset, elem_size_const,
2285                                              mode);
2286         ir_node *result          = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2287
2288         return result;
2289 }
2290
2291 static ir_node *array_access_to_firm(
2292                 const array_access_expression_t *expression)
2293 {
2294         dbg_info *dbgi   = get_dbg_info(&expression->base.source_position);
2295         ir_node  *addr   = array_access_addr(expression);
2296         type_t   *type   = revert_automatic_type_conversion(
2297                         (const expression_t*) expression);
2298         type             = skip_typeref(type);
2299
2300         return deref_address(type, addr, dbgi);
2301 }
2302
2303 static long get_offsetof_offset(const offsetof_expression_t *expression)
2304 {
2305         type_t *orig_type = expression->type;
2306         long    offset    = 0;
2307
2308         designator_t *designator = expression->designator;
2309         for( ; designator != NULL; designator = designator->next) {
2310                 type_t *type = skip_typeref(orig_type);
2311                 /* be sure the type is constructed */
2312                 (void) get_ir_type(type);
2313
2314                 if(designator->symbol != NULL) {
2315                         assert(is_type_compound(type));
2316                         symbol_t *symbol = designator->symbol;
2317
2318                         declaration_t *declaration = type->compound.declaration;
2319                         declaration_t *iter        = declaration->scope.declarations;
2320                         for( ; iter != NULL; iter = iter->next) {
2321                                 if(iter->symbol == symbol) {
2322                                         break;
2323                                 }
2324                         }
2325                         assert(iter != NULL);
2326
2327                         assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2328                         offset += get_entity_offset(iter->v.entity);
2329
2330                         orig_type = iter->type;
2331                 } else {
2332                         expression_t *array_index = designator->array_index;
2333                         assert(designator->array_index != NULL);
2334                         assert(is_type_array(type));
2335                         assert(is_type_valid(array_index->base.type));
2336
2337                         long index         = fold_constant(array_index);
2338                         ir_type *arr_type  = get_ir_type(type);
2339                         ir_type *elem_type = get_array_element_type(arr_type);
2340                         long     elem_size = get_type_size_bytes(elem_type);
2341
2342                         offset += index * elem_size;
2343
2344                         orig_type = type->array.element_type;
2345                 }
2346         }
2347
2348         return offset;
2349 }
2350
2351 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2352 {
2353         ir_mode  *mode   = get_ir_mode(expression->base.type);
2354         long      offset = get_offsetof_offset(expression);
2355         tarval   *tv     = new_tarval_from_long(offset, mode);
2356         dbg_info *dbgi   = get_dbg_info(&expression->base.source_position);
2357
2358         return new_d_Const(dbgi, mode, tv);
2359 }
2360
2361 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2362                                      ir_entity *entity, type_t *type);
2363
2364 static ir_node *compound_literal_to_firm(
2365                 const compound_literal_expression_t *expression)
2366 {
2367         type_t *type = expression->type;
2368
2369         /* create an entity on the stack */
2370         ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2371
2372         ident     *const id     = id_unique("CompLit.%u");
2373         ir_type   *const irtype = get_ir_type(type);
2374         dbg_info  *const dbgi   = get_dbg_info(&expression->base.source_position);
2375         ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2376         set_entity_ld_ident(entity, id);
2377
2378         set_entity_variability(entity, variability_uninitialized);
2379
2380         /* create initialisation code */
2381         initializer_t *initializer = expression->initializer;
2382         create_local_initializer(initializer, dbgi, entity, type);
2383
2384         /* create a sel for the compound literal address */
2385         ir_node *frame = get_local_frame(entity);
2386         ir_node *sel   = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2387         return sel;
2388 }
2389
2390 /**
2391  * Transform a sizeof expression into Firm code.
2392  */
2393 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2394 {
2395         type_t *type = expression->type;
2396         if(type == NULL) {
2397                 type = expression->tp_expression->base.type;
2398                 assert(type != NULL);
2399         }
2400
2401         type = skip_typeref(type);
2402         /* § 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2403         if(is_type_array(type) && type->array.is_vla
2404                         && expression->tp_expression != NULL) {
2405                 expression_to_firm(expression->tp_expression);
2406         }
2407
2408         return get_type_size(type);
2409 }
2410
2411 /**
2412  * Transform an alignof expression into Firm code.
2413  */
2414 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2415 {
2416         type_t *type = expression->type;
2417         if(type == NULL) {
2418                 /* beware: if expression is a variable reference, return the
2419                    alignment of the variable. */
2420                 const expression_t *tp_expression = expression->tp_expression;
2421                 const declaration_t *declaration = expr_is_variable(tp_expression);
2422                 if (declaration != NULL) {
2423                         /* TODO: get the alignment of this variable. */
2424                 }
2425                 type = tp_expression->base.type;
2426                 assert(type != NULL);
2427         }
2428
2429         ir_mode *const mode = get_ir_mode(expression->base.type);
2430         symconst_symbol sym;
2431         sym.type_p = get_ir_type(type);
2432         return new_SymConst(mode, sym, symconst_type_align);
2433 }
2434
2435 static void init_ir_types(void);
2436 long fold_constant(const expression_t *expression)
2437 {
2438         init_ir_types();
2439
2440         assert(is_constant_expression(expression));
2441
2442         ir_graph *old_current_ir_graph = current_ir_graph;
2443         if(current_ir_graph == NULL) {
2444                 current_ir_graph = get_const_code_irg();
2445         }
2446
2447         ir_node *cnst = expression_to_firm(expression);
2448         current_ir_graph = old_current_ir_graph;
2449
2450         if(!is_Const(cnst)) {
2451                 panic("couldn't fold constant\n");
2452         }
2453
2454         tarval *tv = get_Const_tarval(cnst);
2455         if(!tarval_is_long(tv)) {
2456                 panic("result of constant folding is not integer\n");
2457         }
2458
2459         return get_tarval_long(tv);
2460 }
2461
2462 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2463 {
2464         dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2465
2466         /* first try to fold a constant condition */
2467         if(is_constant_expression(expression->condition)) {
2468                 long val = fold_constant(expression->condition);
2469                 if(val) {
2470                         return expression_to_firm(expression->true_expression);
2471                 } else {
2472                         return expression_to_firm(expression->false_expression);
2473                 }
2474         }
2475
2476         ir_node *cur_block   = get_cur_block();
2477
2478         /* create the true block */
2479         ir_node *true_block  = new_immBlock();
2480
2481         ir_node *true_val = expression_to_firm(expression->true_expression);
2482         ir_node *true_jmp = new_Jmp();
2483
2484         /* create the false block */
2485         ir_node *false_block = new_immBlock();
2486
2487         ir_node *false_val = expression_to_firm(expression->false_expression);
2488         ir_node *false_jmp = new_Jmp();
2489
2490         /* create the condition evaluation */
2491         set_cur_block(cur_block);
2492         create_condition_evaluation(expression->condition, true_block, false_block);
2493         mature_immBlock(true_block);
2494         mature_immBlock(false_block);
2495
2496         /* create the common block */
2497         ir_node *common_block = new_immBlock();
2498         add_immBlock_pred(common_block, true_jmp);
2499         add_immBlock_pred(common_block, false_jmp);
2500         mature_immBlock(common_block);
2501
2502         /* TODO improve static semantics, so either both or no values are NULL */
2503         if (true_val == NULL || false_val == NULL)
2504                 return NULL;
2505
2506         ir_node *in[2] = { true_val, false_val };
2507         ir_mode *mode  = get_irn_mode(true_val);
2508         assert(get_irn_mode(false_val) == mode);
2509         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
2510
2511         return val;
2512 }
2513
2514 static ir_node *select_addr(const select_expression_t *expression)
2515 {
2516         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2517
2518         ir_node *compound_addr = expression_to_firm(expression->compound);
2519
2520         /* make sure the type is constructed */
2521         type_t *type = skip_typeref(expression->compound->base.type);
2522         if (is_type_pointer(type)) {
2523                 type = type->pointer.points_to;
2524         }
2525         (void) get_ir_type(type);
2526
2527         declaration_t *entry = expression->compound_entry;
2528         assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2529         ir_entity     *entity = entry->v.entity;
2530
2531         assert(entity != NULL);
2532
2533         ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2534
2535         return sel;
2536 }
2537
2538 static ir_node *select_to_firm(const select_expression_t *expression)
2539 {
2540         dbg_info *dbgi   = get_dbg_info(&expression->base.source_position);
2541         ir_node  *addr   = select_addr(expression);
2542         type_t   *type   = revert_automatic_type_conversion(
2543                         (const expression_t*) expression);
2544         type             = skip_typeref(type);
2545
2546         return deref_address(type, addr, dbgi);
2547 }
2548
2549 /* Values returned by __builtin_classify_type. */
2550 typedef enum gcc_type_class
2551 {
2552         no_type_class = -1,
2553         void_type_class,
2554         integer_type_class,
2555         char_type_class,
2556         enumeral_type_class,
2557         boolean_type_class,
2558         pointer_type_class,
2559         reference_type_class,
2560         offset_type_class,
2561         real_type_class,
2562         complex_type_class,
2563         function_type_class,
2564         method_type_class,
2565         record_type_class,
2566         union_type_class,
2567         array_type_class,
2568         string_type_class,
2569         set_type_class,
2570         file_type_class,
2571         lang_type_class
2572 } gcc_type_class;
2573
2574 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2575 {
2576         const type_t *const type = skip_typeref(expr->type_expression->base.type);
2577
2578         gcc_type_class tc;
2579         switch (type->kind)
2580         {
2581                 case TYPE_ATOMIC: {
2582                         const atomic_type_t *const atomic_type = &type->atomic;
2583                         switch (atomic_type->akind) {
2584                                 /* should not be reached */
2585                                 case ATOMIC_TYPE_INVALID:
2586                                         tc = no_type_class;
2587                                         goto make_const;
2588
2589                                 /* gcc cannot do that */
2590                                 case ATOMIC_TYPE_VOID:
2591                                         tc = void_type_class;
2592                                         goto make_const;
2593
2594                                 case ATOMIC_TYPE_CHAR:      /* gcc handles this as integer */
2595                                 case ATOMIC_TYPE_SCHAR:     /* gcc handles this as integer */
2596                                 case ATOMIC_TYPE_UCHAR:     /* gcc handles this as integer */
2597                                 case ATOMIC_TYPE_SHORT:
2598                                 case ATOMIC_TYPE_USHORT:
2599                                 case ATOMIC_TYPE_INT:
2600                                 case ATOMIC_TYPE_UINT:
2601                                 case ATOMIC_TYPE_LONG:
2602                                 case ATOMIC_TYPE_ULONG:
2603                                 case ATOMIC_TYPE_LONGLONG:
2604                                 case ATOMIC_TYPE_ULONGLONG:
2605                                 case ATOMIC_TYPE_BOOL:      /* gcc handles this as integer */
2606                                         tc = integer_type_class;
2607                                         goto make_const;
2608
2609                                 case ATOMIC_TYPE_FLOAT:
2610                                 case ATOMIC_TYPE_DOUBLE:
2611                                 case ATOMIC_TYPE_LONG_DOUBLE:
2612                                         tc = real_type_class;
2613                                         goto make_const;
2614                         }
2615                         panic("Unexpected atomic type in classify_type_to_firm().");
2616                 }
2617
2618                 case TYPE_COMPLEX:         tc = complex_type_class; goto make_const;
2619                 case TYPE_IMAGINARY:       tc = complex_type_class; goto make_const;
2620                 case TYPE_BITFIELD:        tc = integer_type_class; goto make_const;
2621                 case TYPE_ARRAY:           /* gcc handles this as pointer */
2622                 case TYPE_FUNCTION:        /* gcc handles this as pointer */
2623                 case TYPE_POINTER:         tc = pointer_type_class; goto make_const;
2624                 case TYPE_COMPOUND_STRUCT: tc = record_type_class;  goto make_const;
2625                 case TYPE_COMPOUND_UNION:  tc = union_type_class;   goto make_const;
2626
2627                 /* gcc handles this as integer */
2628                 case TYPE_ENUM:            tc = integer_type_class; goto make_const;
2629
2630                 case TYPE_BUILTIN:
2631                 /* typedef/typeof should be skipped already */
2632                 case TYPE_TYPEDEF:
2633                 case TYPE_TYPEOF:
2634                 case TYPE_INVALID:
2635                 case TYPE_ERROR:
2636                         break;
2637         }
2638         panic("unexpected TYPE classify_type_to_firm().");
2639
2640 make_const: ;
2641         dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2642         ir_mode  *const mode = mode_int;
2643         tarval   *const tv   = new_tarval_from_long(tc, mode);
2644         return new_d_Const(dbgi, mode, tv);
2645 }
2646
2647 static ir_node *function_name_to_firm(
2648                 const funcname_expression_t *const expr)
2649 {
2650         switch(expr->kind) {
2651         case FUNCNAME_FUNCTION:
2652         case FUNCNAME_PRETTY_FUNCTION:
2653         case FUNCNAME_FUNCDNAME:
2654                 if (current_function_name == NULL) {
2655                         const source_position_t *const src_pos = &expr->base.source_position;
2656                         const char *const name = current_function_decl->symbol->string;
2657                         const string_t string = { name, strlen(name) + 1 };
2658                         current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2659                 }
2660                 return current_function_name;
2661         case FUNCNAME_FUNCSIG:
2662                 if (current_funcsig == NULL) {
2663                         const source_position_t *const src_pos = &expr->base.source_position;
2664                         ir_entity *ent = get_irg_entity(current_ir_graph);
2665                         const char *const name = get_entity_ld_name(ent);
2666                         const string_t string = { name, strlen(name) + 1 };
2667                         current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2668                 }
2669                 return current_funcsig;
2670         }
2671         panic("Unsupported function name");
2672 }
2673
2674 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2675 {
2676         statement_t *statement = expr->statement;
2677
2678         assert(statement->kind == STATEMENT_COMPOUND);
2679         return compound_statement_to_firm(&statement->compound);
2680 }
2681
2682 static ir_node *va_start_expression_to_firm(
2683         const va_start_expression_t *const expr)
2684 {
2685         ir_type   *const method_type = get_ir_type(current_function_decl->type);
2686         int        const n           = get_method_n_params(method_type) - 1;
2687         ir_entity *const parm_ent    = get_method_value_param_ent(method_type, n);
2688         ir_node   *const arg_base    = get_irg_value_param_base(current_ir_graph);
2689         dbg_info  *const dbgi        = get_dbg_info(&expr->base.source_position);
2690         ir_node   *const no_mem      = new_NoMem();
2691         ir_node   *const arg_sel     =
2692                 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2693
2694         ir_node   *const cnst        = get_type_size(expr->parameter->type);
2695         ir_node   *const add         = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2696         set_value_for_expression(expr->ap, add);
2697
2698         return NULL;
2699 }
2700
2701 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2702 {
2703         type_t   *const type   = expr->base.type;
2704         ir_node  *const ap     = expression_to_firm(expr->ap);
2705         dbg_info *const dbgi   = get_dbg_info(&expr->base.source_position);
2706         ir_node  *const res    = deref_address(type, ap, dbgi);
2707
2708         ir_node  *const cnst   = get_type_size(expr->base.type);
2709         ir_node  *const add    = new_d_Add(dbgi, ap, cnst, mode_P_data);
2710         set_value_for_expression(expr->ap, add);
2711
2712         return res;
2713 }
2714
2715 static ir_node *dereference_addr(const unary_expression_t *const expression)
2716 {
2717         assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2718         return expression_to_firm(expression->value);
2719 }
2720
2721 static ir_node *expression_to_addr(const expression_t *expression)
2722 {
2723         switch(expression->kind) {
2724         case EXPR_REFERENCE:
2725                 return reference_addr(&expression->reference);
2726         case EXPR_ARRAY_ACCESS:
2727                 return array_access_addr(&expression->array_access);
2728         case EXPR_SELECT:
2729                 return select_addr(&expression->select);
2730         case EXPR_CALL:
2731                 return call_expression_to_firm(&expression->call);
2732         case EXPR_UNARY_DEREFERENCE: {
2733                 return dereference_addr(&expression->unary);
2734         }
2735         default:
2736                 break;
2737         }
2738         panic("trying to get address of non-lvalue");
2739 }
2740
2741 static ir_node *builtin_constant_to_firm(
2742                 const builtin_constant_expression_t *expression)
2743 {
2744         ir_mode *mode = get_ir_mode(expression->base.type);
2745         long     v;
2746
2747         if (is_constant_expression(expression->value)) {
2748                 v = 1;
2749         } else {
2750                 v = 0;
2751         }
2752         return new_Const_long(mode, v);
2753 }
2754
2755 static ir_node *builtin_prefetch_to_firm(
2756                 const builtin_prefetch_expression_t *expression)
2757 {
2758         ir_node *adr = expression_to_firm(expression->adr);
2759         /* no Firm support for prefetch yet */
2760         (void) adr;
2761         return NULL;
2762 }
2763
2764 static ir_node *_expression_to_firm(const expression_t *expression)
2765 {
2766         switch(expression->kind) {
2767         case EXPR_CHARACTER_CONSTANT:
2768                 return character_constant_to_firm(&expression->conste);
2769         case EXPR_WIDE_CHARACTER_CONSTANT:
2770                 return wide_character_constant_to_firm(&expression->conste);
2771         case EXPR_CONST:
2772                 return const_to_firm(&expression->conste);
2773         case EXPR_STRING_LITERAL:
2774                 return string_literal_to_firm(&expression->string);
2775         case EXPR_WIDE_STRING_LITERAL:
2776                 return wide_string_literal_to_firm(&expression->wide_string);
2777         case EXPR_REFERENCE:
2778                 return reference_expression_to_firm(&expression->reference);
2779         case EXPR_CALL:
2780                 return call_expression_to_firm(&expression->call);
2781         EXPR_UNARY_CASES
2782                 return unary_expression_to_firm(&expression->unary);
2783         EXPR_BINARY_CASES
2784                 return binary_expression_to_firm(&expression->binary);
2785         case EXPR_ARRAY_ACCESS:
2786                 return array_access_to_firm(&expression->array_access);
2787         case EXPR_SIZEOF:
2788                 return sizeof_to_firm(&expression->typeprop);
2789         case EXPR_ALIGNOF:
2790                 return alignof_to_firm(&expression->typeprop);
2791         case EXPR_CONDITIONAL:
2792                 return conditional_to_firm(&expression->conditional);
2793         case EXPR_SELECT:
2794                 return select_to_firm(&expression->select);
2795         case EXPR_CLASSIFY_TYPE:
2796                 return classify_type_to_firm(&expression->classify_type);
2797         case EXPR_FUNCNAME:
2798                 return function_name_to_firm(&expression->funcname);
2799         case EXPR_STATEMENT:
2800                 return statement_expression_to_firm(&expression->statement);
2801         case EXPR_VA_START:
2802                 return va_start_expression_to_firm(&expression->va_starte);
2803         case EXPR_VA_ARG:
2804                 return va_arg_expression_to_firm(&expression->va_arge);
2805         case EXPR_BUILTIN_SYMBOL:
2806                 panic("unimplemented expression found");
2807         case EXPR_BUILTIN_CONSTANT_P:
2808                 return builtin_constant_to_firm(&expression->builtin_constant);
2809         case EXPR_BUILTIN_PREFETCH:
2810                 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2811         case EXPR_OFFSETOF:
2812                 return offsetof_to_firm(&expression->offsetofe);
2813         case EXPR_COMPOUND_LITERAL:
2814                 return compound_literal_to_firm(&expression->compound_literal);
2815
2816         case EXPR_UNKNOWN:
2817         case EXPR_INVALID:
2818                 break;
2819         }
2820         panic("invalid expression found");
2821 }
2822
2823 static ir_node *expression_to_firm(const expression_t *expression)
2824 {
2825         ir_node *res = _expression_to_firm(expression);
2826
2827         if(res != NULL && get_irn_mode(res) == mode_b) {
2828                 ir_mode *mode = get_ir_mode(expression->base.type);
2829                 if(is_Const(res)) {
2830                         if(is_Const_null(res)) {
2831                                 return new_Const_long(mode, 0);
2832                         } else {
2833                                 assert(is_Const_one(res));
2834                                 return new_Const_long(mode, 1);
2835                         }
2836                 }
2837
2838                 dbg_info *dbgi        = get_dbg_info(&expression->base.source_position);
2839                 return produce_condition_result(expression, dbgi);
2840         }
2841
2842         return res;
2843 }
2844
2845 static ir_node *expression_to_modeb(const expression_t *expression)
2846 {
2847         ir_node *res = _expression_to_firm(expression);
2848         res          = create_conv(NULL, res, mode_b);
2849
2850         return res;
2851 }
2852
2853 /**
2854  * create a short-circuit expression evaluation that tries to construct
2855  * efficient control flow structures for &&, || and ! expressions
2856  */
2857 static void create_condition_evaluation(const expression_t *expression,
2858                                         ir_node *true_block,
2859                                         ir_node *false_block)
2860 {
2861         switch(expression->kind) {
2862         case EXPR_UNARY_NOT: {
2863                 const unary_expression_t *unary_expression = &expression->unary;
2864                 create_condition_evaluation(unary_expression->value, false_block,
2865                                             true_block);
2866                 return;
2867         }
2868         case EXPR_BINARY_LOGICAL_AND: {
2869                 const binary_expression_t *binary_expression = &expression->binary;
2870
2871                 ir_node *cur_block   = get_cur_block();
2872                 ir_node *extra_block = new_immBlock();
2873                 set_cur_block(cur_block);
2874                 create_condition_evaluation(binary_expression->left, extra_block,
2875                                             false_block);
2876                 mature_immBlock(extra_block);
2877                 set_cur_block(extra_block);
2878                 create_condition_evaluation(binary_expression->right, true_block,
2879                                             false_block);
2880                 return;
2881         }
2882         case EXPR_BINARY_LOGICAL_OR: {
2883                 const binary_expression_t *binary_expression = &expression->binary;
2884
2885                 ir_node *cur_block   = get_cur_block();
2886                 ir_node *extra_block = new_immBlock();
2887                 set_cur_block(cur_block);
2888                 create_condition_evaluation(binary_expression->left, true_block,
2889                                             extra_block);
2890                 mature_immBlock(extra_block);
2891                 set_cur_block(extra_block);
2892                 create_condition_evaluation(binary_expression->right, true_block,
2893                                             false_block);
2894                 return;
2895         }
2896         default:
2897                 break;
2898         }
2899
2900         dbg_info *dbgi       = get_dbg_info(&expression->base.source_position);
2901         ir_node  *condition  = expression_to_modeb(expression);
2902         ir_node  *cond       = new_d_Cond(dbgi, condition);
2903         ir_node  *true_proj  = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2904         ir_node  *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2905
2906         /* set branch prediction info based on __builtin_expect */
2907         if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2908                 long               cnst = fold_constant(expression->binary.right);
2909                 cond_jmp_predicate pred;
2910
2911                 if(cnst == 0) {
2912                         pred = COND_JMP_PRED_FALSE;
2913                 } else {
2914                         pred = COND_JMP_PRED_TRUE;
2915                 }
2916                 set_Cond_jmp_pred(cond, pred);
2917         }
2918
2919         add_immBlock_pred(true_block, true_proj);
2920         add_immBlock_pred(false_block, false_proj);
2921
2922         set_cur_block(NULL);
2923 }
2924
2925
2926
2927 static void create_declaration_entity(declaration_t *declaration,
2928                                       declaration_kind_t declaration_kind,
2929                                       ir_type *parent_type)
2930 {
2931         ident     *const id     = new_id_from_str(declaration->symbol->string);
2932         type_t    *const type   = skip_typeref(declaration->type);
2933         ir_type   *const irtype = get_ir_type(type);
2934         dbg_info  *const dbgi   = get_dbg_info(&declaration->source_position);
2935         ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2936
2937         declaration->declaration_kind = (unsigned char) declaration_kind;
2938         declaration->v.entity         = entity;
2939         set_entity_variability(entity, variability_uninitialized);
2940         set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
2941         if(parent_type == get_tls_type())
2942                 set_entity_allocation(entity, allocation_automatic);
2943         else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2944                 set_entity_allocation(entity, allocation_static);
2945
2946         if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2947                 set_entity_volatility(entity, volatility_is_volatile);
2948         }
2949 }
2950
2951
2952 typedef struct type_path_entry_t type_path_entry_t;
2953 struct type_path_entry_t {
2954         type_t           *type;
2955         ir_initializer_t *initializer;
2956         size_t            index;
2957         declaration_t    *compound_entry;
2958 };
2959
2960 typedef struct type_path_t type_path_t;
2961 struct type_path_t {
2962         type_path_entry_t *path;
2963         type_t            *top_type;
2964         bool               invalid;
2965 };
2966
2967 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2968 {
2969         size_t len = ARR_LEN(path->path);
2970
2971         for(size_t i = 0; i < len; ++i) {
2972                 const type_path_entry_t *entry = & path->path[i];
2973
2974                 type_t *type = skip_typeref(entry->type);
2975                 if(is_type_compound(type)) {
2976                         fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2977                 } else if(is_type_array(type)) {
2978                         fprintf(stderr, "[%zd]", entry->index);
2979                 } else {
2980                         fprintf(stderr, "-INVALID-");
2981                 }
2982         }
2983         fprintf(stderr, "  (");
2984         print_type(path->top_type);
2985         fprintf(stderr, ")");
2986 }
2987
2988 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2989 {
2990         size_t len = ARR_LEN(path->path);
2991         assert(len > 0);
2992         return & path->path[len-1];
2993 }
2994
2995 static type_path_entry_t *append_to_type_path(type_path_t *path)
2996 {
2997         size_t len = ARR_LEN(path->path);
2998         ARR_RESIZE(type_path_entry_t, path->path, len+1);
2999
3000         type_path_entry_t *result = & path->path[len];
3001         memset(result, 0, sizeof(result[0]));
3002         return result;
3003 }
3004
3005 static size_t get_compound_size(const compound_type_t *type)
3006 {
3007         declaration_t *declaration = type->declaration;
3008         declaration_t *member      = declaration->scope.declarations;
3009         size_t         size        = 0;
3010         for( ; member != NULL; member = member->next) {
3011                 ++size;
3012         }
3013         /* TODO: cache results? */
3014
3015         return size;
3016 }
3017
3018 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3019 {
3020         type_t *orig_top_type = path->top_type;
3021         type_t *top_type      = skip_typeref(orig_top_type);
3022
3023         assert(is_type_compound(top_type) || is_type_array(top_type));
3024
3025         if(ARR_LEN(path->path) == 0) {
3026                 return NULL;
3027         } else {
3028                 type_path_entry_t *top         = get_type_path_top(path);
3029                 ir_initializer_t  *initializer = top->initializer;
3030                 return get_initializer_compound_value(initializer, top->index);
3031         }
3032 }
3033
3034 static void descend_into_subtype(type_path_t *path)
3035 {
3036         type_t *orig_top_type = path->top_type;
3037         type_t *top_type      = skip_typeref(orig_top_type);
3038
3039         assert(is_type_compound(top_type) || is_type_array(top_type));
3040
3041         ir_initializer_t *initializer = get_initializer_entry(path);
3042
3043         type_path_entry_t *top = append_to_type_path(path);
3044         top->type              = top_type;
3045
3046         size_t len;
3047
3048         if(is_type_compound(top_type)) {
3049                 declaration_t *declaration = top_type->compound.declaration;
3050                 declaration_t *entry       = declaration->scope.declarations;
3051
3052                 top->compound_entry = entry;
3053                 top->index          = 0;
3054                 len                 = get_compound_size(&top_type->compound);
3055                 if(entry != NULL)
3056                         path->top_type = entry->type;
3057         } else {
3058                 assert(is_type_array(top_type));
3059                 assert(top_type->array.size > 0);
3060
3061                 top->index     = 0;
3062                 path->top_type = top_type->array.element_type;
3063                 len            = top_type->array.size;
3064         }
3065         if(initializer == NULL
3066                         || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3067                 initializer = create_initializer_compound(len);
3068                 /* we have to set the entry at the 2nd latest path entry... */
3069                 size_t path_len = ARR_LEN(path->path);
3070                 assert(path_len >= 1);
3071                 if(path_len > 1) {
3072                         type_path_entry_t *entry        = & path->path[path_len-2];
3073                         ir_initializer_t  *tinitializer = entry->initializer;
3074                         set_initializer_compound_value(tinitializer, entry->index,
3075                                                        initializer);
3076                 }
3077         }
3078         top->initializer = initializer;
3079 }
3080
3081 static void ascend_from_subtype(type_path_t *path)
3082 {
3083         type_path_entry_t *top = get_type_path_top(path);
3084
3085         path->top_type = top->type;
3086
3087         size_t len = ARR_LEN(path->path);
3088         ARR_RESIZE(type_path_entry_t, path->path, len-1);
3089 }
3090
3091 static void walk_designator(type_path_t *path, const designator_t *designator)
3092 {
3093         /* designators start at current object type */
3094         ARR_RESIZE(type_path_entry_t, path->path, 1);
3095
3096         for( ; designator != NULL; designator = designator->next) {
3097                 type_path_entry_t *top         = get_type_path_top(path);
3098                 type_t            *orig_type   = top->type;
3099                 type_t            *type        = skip_typeref(orig_type);
3100
3101                 if(designator->symbol != NULL) {
3102                         assert(is_type_compound(type));
3103                         size_t    index  = 0;
3104                         symbol_t *symbol = designator->symbol;
3105
3106                         declaration_t *declaration = type->compound.declaration;
3107                         declaration_t *iter        = declaration->scope.declarations;
3108                         for( ; iter != NULL; iter = iter->next, ++index) {
3109                                 if(iter->symbol == symbol) {
3110                                         break;
3111                                 }
3112                         }
3113                         assert(iter != NULL);
3114
3115                         top->type           = orig_type;
3116                         top->compound_entry = iter;
3117                         top->index          = index;
3118                         orig_type           = iter->type;
3119                 } else {
3120                         expression_t *array_index = designator->array_index;
3121                         assert(designator->array_index != NULL);
3122                         assert(is_type_array(type));
3123                         assert(is_type_valid(array_index->base.type));
3124
3125                         long index = fold_constant(array_index);
3126                         assert(index >= 0);
3127 #ifndef NDEBUG
3128                         if(type->array.size_constant == 1) {
3129                                 long array_size = type->array.size;
3130                                 assert(index < array_size);
3131                         }
3132 #endif
3133
3134                         top->type  = orig_type;
3135                         top->index = (size_t) index;
3136                         orig_type  = type->array.element_type;
3137                 }
3138                 path->top_type = orig_type;
3139
3140                 if(designator->next != NULL) {
3141                         descend_into_subtype(path);
3142                 }
3143         }
3144
3145         path->invalid  = false;
3146 }
3147
3148 static void advance_current_object(type_path_t *path)
3149 {
3150         if(path->invalid) {
3151                 /* TODO: handle this... */
3152                 panic("invalid initializer in ast2firm (excessive elements)");
3153                 return;
3154         }
3155
3156         type_path_entry_t *top = get_type_path_top(path);
3157
3158         type_t *type = skip_typeref(top->type);
3159         if(is_type_union(type)) {
3160                 top->compound_entry = NULL;
3161         } else if(is_type_struct(type)) {
3162                 declaration_t *entry = top->compound_entry;
3163
3164                 top->index++;
3165                 entry               = entry->next;
3166                 top->compound_entry = entry;
3167                 if(entry != NULL) {
3168                         path->top_type = entry->type;
3169                         return;
3170                 }
3171         } else {
3172                 assert(is_type_array(type));
3173
3174                 top->index++;
3175                 if(!type->array.size_constant || top->index < type->array.size) {
3176                         return;
3177                 }
3178         }
3179
3180         /* we're past the last member of the current sub-aggregate, try if we
3181          * can ascend in the type hierarchy and continue with another subobject */
3182         size_t len = ARR_LEN(path->path);
3183
3184         if(len > 1) {
3185                 ascend_from_subtype(path);
3186                 advance_current_object(path);
3187         } else {
3188                 path->invalid = true;
3189         }
3190 }
3191
3192
3193 static ir_initializer_t *create_ir_initializer(
3194                 const initializer_t *initializer, type_t *type);
3195
3196 static ir_initializer_t *create_ir_initializer_value(
3197                 const initializer_value_t *initializer)
3198 {
3199         if (is_type_compound(initializer->value->base.type)) {
3200                 panic("initializer creation for compounds not implemented yet");
3201         }
3202         ir_node *value = expression_to_firm(initializer->value);
3203         return create_initializer_const(value);
3204 }
3205
3206 static ir_initializer_t *create_ir_initializer_list(
3207                 const initializer_list_t *initializer, type_t *type)
3208 {
3209         type_path_t path;
3210         memset(&path, 0, sizeof(path));
3211         path.top_type = type;
3212         path.path     = NEW_ARR_F(type_path_entry_t, 0);
3213
3214         descend_into_subtype(&path);
3215
3216         for(size_t i = 0; i < initializer->len; ++i) {
3217                 const initializer_t *sub_initializer = initializer->initializers[i];
3218
3219                 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3220                         walk_designator(&path, sub_initializer->designator.designator);
3221                         continue;
3222                 }
3223
3224                 if(sub_initializer->kind == INITIALIZER_VALUE) {
3225                         /* we might have to descend into types until we're at a scalar
3226                          * type */
3227                         while(true) {
3228                                 type_t *orig_top_type = path.top_type;
3229                                 type_t *top_type      = skip_typeref(orig_top_type);
3230
3231                                 if(is_type_scalar(top_type))
3232                                         break;
3233                                 descend_into_subtype(&path);
3234                         }
3235                 }
3236
3237                 ir_initializer_t *sub_irinitializer
3238                         = create_ir_initializer(sub_initializer, path.top_type);
3239
3240                 size_t path_len = ARR_LEN(path.path);
3241                 assert(path_len >= 1);
3242                 type_path_entry_t *entry        = & path.path[path_len-1];
3243                 ir_initializer_t  *tinitializer = entry->initializer;
3244                 set_initializer_compound_value(tinitializer, entry->index,
3245                                                sub_irinitializer);
3246
3247                 advance_current_object(&path);
3248         }
3249
3250         assert(ARR_LEN(path.path) >= 1);
3251         ir_initializer_t *result = path.path[0].initializer;
3252         DEL_ARR_F(path.path);
3253
3254         return result;
3255 }
3256
3257 static ir_initializer_t *create_ir_initializer_string(
3258                 const initializer_string_t *initializer, type_t *type)
3259 {
3260         type = skip_typeref(type);
3261
3262         size_t            string_len    = initializer->string.size;
3263         assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3264         size_t            len           = type->array.size;
3265         ir_initializer_t *irinitializer = create_initializer_compound(len);
3266
3267         const char *string = initializer->string.begin;
3268         ir_mode    *mode   = get_type_mode(ir_type_const_char);
3269
3270         for(size_t i = 0; i < len; ++i) {
3271                 char c = 0;
3272                 if(i < string_len)
3273                         c = string[i];
3274
3275                 tarval           *tv = new_tarval_from_long(c, mode);
3276                 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3277
3278                 set_initializer_compound_value(irinitializer, i, char_initializer);
3279         }
3280
3281         return irinitializer;
3282 }
3283
3284 static ir_initializer_t *create_ir_initializer_wide_string(
3285                 const initializer_wide_string_t *initializer, type_t *type)
3286 {
3287         size_t            string_len    = initializer->string.size;
3288         assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3289         size_t            len           = type->array.size;
3290         ir_initializer_t *irinitializer = create_initializer_compound(len);
3291
3292         const wchar_rep_t *string = initializer->string.begin;
3293         ir_mode           *mode   = get_type_mode(ir_type_wchar_t);
3294
3295         for(size_t i = 0; i < len; ++i) {
3296                 wchar_rep_t c = 0;
3297                 if(i < string_len) {
3298                         c = string[i];
3299                 }
3300                 tarval *tv = new_tarval_from_long(c, mode);
3301                 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3302
3303                 set_initializer_compound_value(irinitializer, i, char_initializer);
3304         }
3305
3306         return irinitializer;
3307 }
3308
3309 static ir_initializer_t *create_ir_initializer(
3310                 const initializer_t *initializer, type_t *type)
3311 {
3312         switch(initializer->kind) {
3313                 case INITIALIZER_STRING:
3314                         return create_ir_initializer_string(&initializer->string, type);
3315
3316                 case INITIALIZER_WIDE_STRING:
3317                         return create_ir_initializer_wide_string(&initializer->wide_string,
3318                                                                  type);
3319
3320                 case INITIALIZER_LIST:
3321                         return create_ir_initializer_list(&initializer->list, type);
3322
3323                 case INITIALIZER_VALUE:
3324                         return create_ir_initializer_value(&initializer->value);
3325
3326                 case INITIALIZER_DESIGNATOR:
3327                         panic("unexpected designator initializer found");
3328         }
3329         panic("unknown initializer");
3330 }
3331
3332 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3333                 ir_node *base_addr)
3334 {
3335         if (is_atomic_type(type)) {
3336                 ir_mode *mode = get_type_mode(type);
3337                 tarval  *zero = get_mode_null(mode);
3338                 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3339
3340                 /* TODO: bitfields */
3341                 ir_node *mem    = get_store();
3342                 ir_node *store  = new_d_Store(dbgi, mem, base_addr, cnst);
3343                 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3344                 set_store(proj_m);
3345         } else {
3346                 assert(is_compound_type(type));
3347
3348                 int n_members;
3349                 if(is_Array_type(type)) {
3350                         assert(has_array_upper_bound(type, 0));
3351                         n_members = get_array_upper_bound_int(type, 0);
3352                 } else {
3353                         n_members = get_compound_n_members(type);
3354                 }
3355
3356                 for(int i = 0; i < n_members; ++i) {
3357                         ir_node *addr;
3358                         ir_type *irtype;
3359                         if(is_Array_type(type)) {
3360                                 ir_entity *entity   = get_array_element_entity(type);
3361                                 tarval    *index_tv = new_tarval_from_long(i, mode_uint);
3362                                 ir_node   *cnst     = new_d_Const(dbgi, mode_uint, index_tv);
3363                                 ir_node   *in[1]    = { cnst };
3364                                 irtype = get_array_element_type(type);
3365                                 addr   = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3366                         } else {
3367                                 ir_entity *member = get_compound_member(type, i);
3368
3369                                 irtype = get_entity_type(member);
3370                                 addr   = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3371                         }
3372
3373                         create_dynamic_null_initializer(irtype, dbgi, addr);
3374                 }
3375         }
3376 }
3377
3378 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3379                 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3380 {
3381         switch(get_initializer_kind(initializer)) {
3382         case IR_INITIALIZER_NULL: {
3383                 create_dynamic_null_initializer(type, dbgi, base_addr);
3384                 return;
3385         }
3386         case IR_INITIALIZER_CONST: {
3387                 ir_node *node = get_initializer_const_value(initializer);
3388                 ir_mode *mode = get_irn_mode(node);
3389                 assert(get_type_mode(type) == mode);
3390
3391                 /* TODO: bitfields... */
3392                 ir_node *mem    = get_store();
3393                 ir_node *store  = new_d_Store(dbgi, mem, base_addr, node);
3394                 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3395                 set_store(proj_m);
3396                 return;
3397         }
3398         case IR_INITIALIZER_TARVAL: {
3399                 tarval  *tv   = get_initializer_tarval_value(initializer);
3400                 ir_mode *mode = get_tarval_mode(tv);
3401                 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3402                 assert(get_type_mode(type) == mode);
3403
3404                 /* TODO: bitfields... */
3405                 ir_node *mem    = get_store();
3406                 ir_node *store  = new_d_Store(dbgi, mem, base_addr, cnst);
3407                 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3408                 set_store(proj_m);
3409                 return;
3410         }
3411         case IR_INITIALIZER_COMPOUND: {
3412                 assert(is_compound_type(type));
3413                 int n_members;
3414                 if(is_Array_type(type)) {
3415                         assert(has_array_upper_bound(type, 0));
3416                         n_members = get_array_upper_bound_int(type, 0);
3417                 } else {
3418                         n_members = get_compound_n_members(type);
3419                 }
3420
3421                 if(get_initializer_compound_n_entries(initializer)
3422                                 != (unsigned) n_members)
3423                         panic("initializer doesn't match compound type");
3424
3425                 for(int i = 0; i < n_members; ++i) {
3426                         ir_node *addr;
3427                         ir_type *irtype;
3428                         if(is_Array_type(type)) {
3429                                 ir_entity *entity   = get_array_element_entity(type);
3430                                 tarval    *index_tv = new_tarval_from_long(i, mode_uint);
3431                                 ir_node   *cnst     = new_d_Const(dbgi, mode_uint, index_tv);
3432                                 ir_node   *in[1]    = { cnst };
3433                                 irtype = get_array_element_type(type);
3434                                 addr   = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3435                         } else {
3436                                 ir_entity *member = get_compound_member(type, i);
3437
3438                                 irtype = get_entity_type(member);
3439                                 addr   = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3440                         }
3441
3442                         ir_initializer_t *sub_init
3443                                 = get_initializer_compound_value(initializer, i);
3444
3445                         create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3446                 }
3447                 return;
3448         }
3449         }
3450
3451         panic("invalid IR_INITIALIZER found");
3452 }
3453
3454 static void create_dynamic_initializer(ir_initializer_t *initializer,
3455                 dbg_info *dbgi, ir_entity *entity)
3456 {
3457         ir_node *frame     = get_local_frame(entity);
3458         ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3459         ir_type *type      = get_entity_type(entity);
3460
3461         create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3462 }
3463
3464 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3465                                      ir_entity *entity, type_t *type)
3466 {
3467         ir_node *memory = get_store();
3468         ir_node *nomem  = new_NoMem();
3469         ir_node *frame  = get_irg_frame(current_ir_graph);
3470         ir_node *addr   = new_d_simpleSel(dbgi, nomem, frame, entity);
3471
3472         if(initializer->kind == INITIALIZER_VALUE) {
3473                 initializer_value_t *initializer_value = &initializer->value;
3474
3475                 ir_node *value = expression_to_firm(initializer_value->value);
3476                 type = skip_typeref(type);
3477                 assign_value(dbgi, addr, type, value);
3478                 return;
3479         }
3480
3481         if(!is_constant_initializer(initializer)) {
3482                 ir_initializer_t *irinitializer
3483                         = create_ir_initializer(initializer, type);
3484
3485                 create_dynamic_initializer(irinitializer, dbgi, entity);
3486                 return;
3487         }
3488
3489         /* create the ir_initializer */
3490         ir_graph *const old_current_ir_graph = current_ir_graph;
3491         current_ir_graph = get_const_code_irg();
3492
3493         ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3494
3495         assert(current_ir_graph == get_const_code_irg());
3496         current_ir_graph = old_current_ir_graph;
3497
3498         /* create a "template" entity which is copied to the entity on the stack */
3499         ident     *const id          = id_unique("initializer.%u");
3500         ir_type   *const irtype      = get_ir_type(type);
3501         ir_type   *const global_type = get_glob_type();
3502         ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3503         set_entity_ld_ident(init_entity, id);
3504
3505         set_entity_variability(init_entity, variability_initialized);
3506         set_entity_visibility(init_entity, visibility_local);
3507         set_entity_allocation(init_entity, allocation_static);
3508
3509         set_entity_initializer(init_entity, irinitializer);
3510
3511         ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3512         ir_node *const copyb    = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3513
3514         ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3515         set_store(copyb_mem);
3516 }
3517
3518 static void create_initializer_local_variable_entity(declaration_t *declaration)
3519 {
3520         initializer_t *initializer = declaration->init.initializer;
3521         dbg_info      *dbgi        = get_dbg_info(&declaration->source_position);
3522         ir_entity     *entity      = declaration->v.entity;
3523         type_t        *type        = declaration->type;
3524         create_local_initializer(initializer, dbgi, entity, type);
3525 }
3526
3527 static void create_declaration_initializer(declaration_t *declaration)
3528 {
3529         initializer_t *initializer = declaration->init.initializer;
3530         if(initializer == NULL)
3531                 return;
3532
3533         declaration_kind_t declaration_kind
3534                 = (declaration_kind_t) declaration->declaration_kind;
3535         if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3536                 create_initializer_local_variable_entity(declaration);
3537                 return;
3538         }
3539
3540         if(initializer->kind == INITIALIZER_VALUE) {
3541                 initializer_value_t *initializer_value = &initializer->value;
3542                 dbg_info            *dbgi
3543                         = get_dbg_info(&declaration->source_position);
3544
3545                 ir_node *value = expression_to_firm(initializer_value->value);
3546                 value = do_strict_conv(dbgi, value);
3547
3548                 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3549                         set_value(declaration->v.value_number, value);
3550                 } else {
3551                         assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3552
3553                         ir_entity *entity = declaration->v.entity;
3554
3555                         set_entity_variability(entity, variability_initialized);
3556                         set_atomic_ent_value(entity, value);
3557                 }
3558         } else {
3559                 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3560                                 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3561
3562                 ir_entity        *entity        = declaration->v.entity;
3563                 ir_initializer_t *irinitializer
3564                         = create_ir_initializer(initializer, declaration->type);
3565
3566                 set_entity_variability(entity, variability_initialized);
3567                 set_entity_initializer(entity, irinitializer);
3568         }
3569 }
3570
3571 static void create_variable_length_array(declaration_t *declaration)
3572 {
3573         dbg_info *dbgi      = get_dbg_info(&declaration->source_position);
3574         type_t   *type      = declaration->type;
3575         ir_node  *mem       = get_store();
3576         ir_type  *el_type   = get_ir_type(type->array.element_type);
3577
3578         /* make sure size_node is calculated */
3579         get_type_size(type);
3580         ir_node  *elems = type->array.size_node;
3581         ir_node  *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3582
3583         ir_node  *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3584         ir_node  *addr   = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3585         set_store(proj_m);
3586
3587         /* initializers are not allowed for VLAs */
3588         assert(declaration->init.initializer == NULL);
3589
3590         declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3591         declaration->v.vla_base       = addr;
3592
3593         /* TODO: record VLA somewhere so we create the free node when we leave
3594          * it's scope */
3595 }
3596
3597 /**
3598  * Creates a Firm local variable from a declaration.
3599  */
3600 static void create_local_variable(declaration_t *declaration)
3601 {
3602         assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3603
3604         bool needs_entity = declaration->address_taken;
3605         type_t *type = skip_typeref(declaration->type);
3606
3607         /* is it a variable length array? */
3608         if(is_type_array(type) && !type->array.size_constant) {
3609                 create_variable_length_array(declaration);
3610                 return;
3611         } else if(is_type_array(type) || is_type_compound(type)) {
3612                 needs_entity = true;
3613         } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3614                 needs_entity = true;
3615         }
3616
3617         if(needs_entity) {
3618                 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3619                 create_declaration_entity(declaration,
3620                                           DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3621                                           frame_type);
3622         } else {
3623                 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3624                 declaration->v.value_number   = next_value_number_function;
3625                 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3626                 ++next_value_number_function;
3627         }
3628 }
3629
3630 static void create_local_static_variable(declaration_t *declaration)
3631 {
3632         assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3633
3634         type_t    *const type        = skip_typeref(declaration->type);
3635         ir_type   *const global_type = get_glob_type();
3636         ir_type   *const irtype      = get_ir_type(type);
3637         dbg_info  *const dbgi        = get_dbg_info(&declaration->source_position);
3638
3639         size_t l = strlen(declaration->symbol->string);
3640         char   buf[l + sizeof(".%u")];
3641         snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3642         ident     *const id = id_unique(buf);
3643
3644         ir_entity *const entity      = new_d_entity(global_type, id, irtype, dbgi);
3645
3646         if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3647                 set_entity_volatility(entity, volatility_is_volatile);
3648         }
3649
3650         declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3651         declaration->v.entity         = entity;
3652         set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3653         set_entity_variability(entity, variability_uninitialized);
3654         set_entity_visibility(entity, visibility_local);
3655         set_entity_allocation(entity, allocation_static);
3656
3657         ir_graph *const old_current_ir_graph = current_ir_graph;
3658         current_ir_graph = get_const_code_irg();
3659
3660         create_declaration_initializer(declaration);
3661
3662         assert(current_ir_graph == get_const_code_irg());
3663         current_ir_graph = old_current_ir_graph;
3664 }
3665
3666
3667
3668 static void return_statement_to_firm(return_statement_t *statement)
3669 {
3670         if(get_cur_block() == NULL)
3671                 return;
3672
3673         dbg_info *dbgi        = get_dbg_info(&statement->base.source_position);
3674         ir_type  *func_irtype = get_ir_type(current_function_decl->type);
3675
3676
3677         ir_node *in[1];
3678         int      in_len;
3679         if(get_method_n_ress(func_irtype) > 0) {
3680                 ir_type *res_type = get_method_res_type(func_irtype, 0);
3681
3682                 if(statement->value != NULL) {
3683                         ir_node *node = expression_to_firm(statement->value);
3684                         node  = do_strict_conv(dbgi, node);
3685                         in[0] = node;
3686                 } else {
3687                         ir_mode *mode;
3688                         if(is_compound_type(res_type)) {
3689                                 mode = mode_P_data;
3690                         } else {
3691                                 mode = get_type_mode(res_type);
3692                         }
3693                         in[0] = new_Unknown(mode);
3694                 }
3695                 in_len = 1;
3696         } else {
3697                 /* build return_value for its side effects */
3698                 if(statement->value != NULL) {
3699                         expression_to_firm(statement->value);
3700                 }
3701                 in_len = 0;
3702         }
3703
3704         ir_node  *store = get_store();
3705         ir_node  *ret   = new_d_Return(dbgi, store, in_len, in);
3706
3707         ir_node *end_block = get_irg_end_block(current_ir_graph);
3708         add_immBlock_pred(end_block, ret);
3709
3710         set_cur_block(NULL);
3711 }
3712
3713 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3714 {
3715         if(get_cur_block() == NULL)
3716                 return NULL;
3717
3718         return expression_to_firm(statement->expression);
3719 }
3720
3721 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3722 {
3723         declaration_t *declaration = compound->scope.declarations;
3724         for( ; declaration != NULL; declaration = declaration->next) {
3725                 create_local_declaration(declaration);
3726         }
3727
3728         ir_node     *result    = NULL;
3729         statement_t *statement = compound->statements;
3730         for( ; statement != NULL; statement = statement->base.next) {
3731                 if(statement->base.next == NULL
3732                                 && statement->kind == STATEMENT_EXPRESSION) {
3733                         result = expression_statement_to_firm(
3734                                         &statement->expression);
3735                         break;
3736                 }
3737                 statement_to_firm(statement);
3738         }
3739
3740         return result;
3741 }
3742
3743 static void create_global_variable(declaration_t *declaration)
3744 {
3745         ir_visibility  vis;
3746         ir_type       *var_type;
3747         switch ((storage_class_tag_t)declaration->storage_class) {
3748                 case STORAGE_CLASS_STATIC:
3749                         vis = visibility_local;
3750                         goto global_var;
3751
3752                 case STORAGE_CLASS_EXTERN:
3753                         vis = visibility_external_allocated;
3754                         goto global_var;
3755
3756                 case STORAGE_CLASS_NONE:
3757                         vis = visibility_external_visible;
3758                         goto global_var;
3759
3760                 case STORAGE_CLASS_THREAD:
3761                         vis = visibility_external_visible;
3762                         goto tls_var;
3763
3764                 case STORAGE_CLASS_THREAD_EXTERN:
3765                         vis = visibility_external_allocated;
3766                         goto tls_var;
3767
3768                 case STORAGE_CLASS_THREAD_STATIC:
3769                         vis = visibility_local;
3770                         goto tls_var;
3771
3772 tls_var:
3773                         var_type = get_tls_type();
3774                         goto create_var;
3775
3776 global_var:
3777                         var_type = get_glob_type();
3778                         goto create_var;
3779
3780 create_var:
3781                         create_declaration_entity(declaration,
3782                                                   DECLARATION_KIND_GLOBAL_VARIABLE,
3783                                                   var_type);
3784                         set_entity_visibility(declaration->v.entity, vis);
3785
3786                         return;
3787
3788                 case STORAGE_CLASS_TYPEDEF:
3789                 case STORAGE_CLASS_AUTO:
3790                 case STORAGE_CLASS_REGISTER:
3791                 case STORAGE_CLASS_ENUM_ENTRY:
3792                         break;
3793         }
3794         panic("Invalid storage class for global variable");
3795 }
3796
3797 static void create_local_declaration(declaration_t *declaration)
3798 {
3799         if (declaration->namespc != NAMESPACE_NORMAL)
3800                 return;
3801         /* construct type */
3802         (void) get_ir_type(declaration->type);
3803         if (declaration->symbol == NULL) {
3804                 return;
3805         }
3806
3807         type_t *type = skip_typeref(declaration->type);
3808
3809         switch ((storage_class_tag_t) declaration->storage_class) {
3810         case STORAGE_CLASS_STATIC:
3811                 create_local_static_variable(declaration);
3812                 return;
3813         case STORAGE_CLASS_EXTERN:
3814                 create_global_variable(declaration);
3815                 create_declaration_initializer(declaration);
3816                 return;
3817         case STORAGE_CLASS_NONE:
3818         case STORAGE_CLASS_AUTO:
3819         case STORAGE_CLASS_REGISTER:
3820                 if(is_type_function(type)) {
3821                         if(declaration->init.statement != NULL) {
3822                                 panic("nested functions not supported yet");
3823                         } else {
3824                                 get_function_entity(declaration);
3825                         }
3826                 } else {
3827                         create_local_variable(declaration);
3828                 }
3829                 return;
3830         case STORAGE_CLASS_ENUM_ENTRY:
3831                 /* should already be handled */
3832                 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
3833                 return;
3834         case STORAGE_CLASS_TYPEDEF:
3835                 declaration->declaration_kind = DECLARATION_KIND_TYPE;
3836                 return;
3837         case STORAGE_CLASS_THREAD:
3838         case STORAGE_CLASS_THREAD_EXTERN:
3839         case STORAGE_CLASS_THREAD_STATIC:
3840                 break;
3841         }
3842         panic("invalid storage class found");
3843 }
3844
3845 static void initialize_local_declaration(declaration_t *declaration)
3846 {
3847         if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
3848                 return;
3849
3850         switch ((declaration_kind_t) declaration->declaration_kind) {
3851         case DECLARATION_KIND_LOCAL_VARIABLE:
3852         case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
3853                 create_declaration_initializer(declaration);
3854                 return;
3855
3856         case DECLARATION_KIND_LABEL_BLOCK:
3857         case DECLARATION_KIND_COMPOUND_MEMBER:
3858         case DECLARATION_KIND_GLOBAL_VARIABLE:
3859         case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
3860         case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
3861         case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
3862         case DECLARATION_KIND_FUNCTION:
3863         case DECLARATION_KIND_TYPE:
3864         case DECLARATION_KIND_ENUM_ENTRY:
3865                 return;
3866
3867         case DECLARATION_KIND_UNKNOWN:
3868                 panic("can't initialize unknwon declaration");
3869         }
3870         panic("invalid declaration kind");
3871 }
3872
3873 static void declaration_statement_to_firm(declaration_statement_t *statement)
3874 {
3875         declaration_t *declaration = statement->declarations_begin;
3876         declaration_t *end         = statement->declarations_end->next;
3877         for( ; declaration != end; declaration = declaration->next) {
3878                 if(declaration->namespc != NAMESPACE_NORMAL)
3879                         continue;
3880                 initialize_local_declaration(declaration);
3881         }
3882 }
3883
3884 static void if_statement_to_firm(if_statement_t *statement)
3885 {
3886         ir_node *cur_block = get_cur_block();
3887
3888         ir_node *fallthrough_block = new_immBlock();
3889
3890         /* the true (blocks) */
3891         ir_node *true_block;
3892         if (statement->true_statement != NULL) {
3893                 true_block = new_immBlock();
3894                 statement_to_firm(statement->true_statement);
3895                 if(get_cur_block() != NULL) {
3896                         ir_node *jmp = new_Jmp();
3897                         add_immBlock_pred(fallthrough_block, jmp);
3898                 }
3899         } else {
3900                 true_block = fallthrough_block;
3901         }
3902
3903         /* the false (blocks) */
3904         ir_node *false_block;
3905         if(statement->false_statement != NULL) {
3906                 false_block = new_immBlock();
3907
3908                 statement_to_firm(statement->false_statement);
3909                 if(get_cur_block() != NULL) {
3910                         ir_node *jmp = new_Jmp();
3911                         add_immBlock_pred(fallthrough_block, jmp);
3912                 }
3913         } else {
3914                 false_block = fallthrough_block;
3915         }
3916
3917         /* create the condition */
3918         if(cur_block != NULL) {
3919                 set_cur_block(cur_block);
3920                 create_condition_evaluation(statement->condition, true_block,
3921                                             false_block);
3922         }
3923
3924         mature_immBlock(true_block);
3925         if(false_block != fallthrough_block) {
3926                 mature_immBlock(false_block);
3927         }
3928         mature_immBlock(fallthrough_block);
3929
3930         set_cur_block(fallthrough_block);
3931 }
3932
3933 static void while_statement_to_firm(while_statement_t *statement)
3934 {
3935         ir_node *jmp = NULL;
3936         if(get_cur_block() != NULL) {
3937                 jmp = new_Jmp();
3938         }
3939
3940         /* create the header block */
3941         ir_node *header_block = new_immBlock();
3942         if(jmp != NULL) {
3943                 add_immBlock_pred(header_block, jmp);
3944         }
3945
3946         /* the false block */
3947         ir_node *false_block = new_immBlock();
3948
3949         /* the loop body */
3950         ir_node *body_block;
3951         if (statement->body != NULL) {
3952                 ir_node *old_continue_label = continue_label;
3953                 ir_node *old_break_label    = break_label;
3954                 continue_label              = header_block;
3955                 break_label                 = false_block;
3956
3957                 body_block = new_immBlock();
3958                 statement_to_firm(statement->body);
3959
3960                 assert(continue_label == header_block);
3961                 assert(break_label    == false_block);
3962                 continue_label = old_continue_label;
3963                 break_label    = old_break_label;
3964
3965                 if(get_cur_block() != NULL) {
3966                         jmp = new_Jmp();
3967                         add_immBlock_pred(header_block, jmp);
3968                 }
3969         } else {
3970                 body_block = header_block;
3971         }
3972
3973         /* create the condition */
3974         set_cur_block(header_block);
3975
3976         create_condition_evaluation(statement->condition, body_block, false_block);
3977         mature_immBlock(body_block);
3978         mature_immBlock(false_block);
3979         mature_immBlock(header_block);
3980
3981         set_cur_block(false_block);
3982 }
3983
3984 static void do_while_statement_to_firm(do_while_statement_t *statement)
3985 {
3986         ir_node *jmp = NULL;
3987         if(get_cur_block() != NULL) {
3988                 jmp = new_Jmp();
3989         }
3990
3991         /* create the header block */
3992         ir_node *header_block = new_immBlock();
3993
3994         /* the false block */
3995         ir_node *false_block = new_immBlock();
3996
3997         /* the loop body */
3998         ir_node *body_block = new_immBlock();
3999         if(jmp != NULL) {
4000                 add_immBlock_pred(body_block, jmp);
4001         }
4002
4003         if (statement->body != NULL) {
4004                 ir_node *old_continue_label = continue_label;
4005                 ir_node *old_break_label    = break_label;
4006                 continue_label              = header_block;
4007                 break_label                 = false_block;
4008
4009                 statement_to_firm(statement->body);
4010
4011                 assert(continue_label == header_block);
4012                 assert(break_label    == false_block);
4013                 continue_label = old_continue_label;
4014                 break_label    = old_break_label;
4015
4016                 if (get_cur_block() == NULL) {
4017                         mature_immBlock(header_block);
4018                         mature_immBlock(body_block);
4019                         mature_immBlock(false_block);
4020                         return;
4021                 }
4022         }
4023
4024         ir_node *body_jmp = new_Jmp();
4025         add_immBlock_pred(header_block, body_jmp);
4026         mature_immBlock(header_block);
4027
4028         /* create the condition */
4029         set_cur_block(header_block);
4030
4031         create_condition_evaluation(statement->condition, body_block, false_block);
4032         mature_immBlock(body_block);
4033         mature_immBlock(false_block);
4034         mature_immBlock(header_block);
4035
4036         set_cur_block(false_block);
4037 }
4038
4039 static void for_statement_to_firm(for_statement_t *statement)
4040 {
4041         ir_node *jmp = NULL;
4042
4043         /* create declarations */
4044         declaration_t *declaration = statement->scope.declarations;
4045         for( ; declaration != NULL; declaration = declaration->next) {
4046                 create_local_declaration(declaration);
4047         }
4048         declaration = statement->scope.declarations;
4049         for( ; declaration != NULL; declaration = declaration->next) {
4050                 initialize_local_declaration(declaration);
4051         }
4052
4053         if (get_cur_block() != NULL) {
4054                 if(statement->initialisation != NULL) {
4055                         expression_to_firm(statement->initialisation);
4056                 }
4057
4058                 jmp = new_Jmp();
4059         }
4060
4061
4062         /* create the step block */
4063         ir_node *const step_block = new_immBlock();
4064         if (statement->step != NULL) {
4065                 expression_to_firm(statement->step);
4066         }
4067         ir_node *const step_jmp = new_Jmp();
4068
4069         /* create the header block */
4070         ir_node *const header_block = new_immBlock();
4071         if (jmp != NULL) {
4072                 add_immBlock_pred(header_block, jmp);
4073         }
4074         add_immBlock_pred(header_block, step_jmp);
4075
4076         /* the false block */
4077         ir_node *const false_block = new_immBlock();
4078
4079         /* the loop body */
4080         ir_node * body_block;
4081         if (statement->body != NULL) {
4082                 ir_node *const old_continue_label = continue_label;
4083                 ir_node *const old_break_label    = break_label;
4084                 continue_label = step_block;
4085                 break_label    = false_block;
4086
4087                 body_block = new_immBlock();
4088                 statement_to_firm(statement->body);
4089
4090                 assert(continue_label == step_block);
4091                 assert(break_label    == false_block);
4092                 continue_label = old_continue_label;
4093                 break_label    = old_break_label;
4094
4095                 if (get_cur_block() != NULL) {
4096                         jmp = new_Jmp();
4097                         add_immBlock_pred(step_block, jmp);
4098                 }
4099         } else {
4100                 body_block = step_block;
4101         }
4102
4103         /* create the condition */
4104         set_cur_block(header_block);
4105         if (statement->condition != NULL) {
4106                 create_condition_evaluation(statement->condition, body_block,
4107                                             false_block);
4108         } else {
4109                 keep_alive(header_block);
4110                 jmp = new_Jmp();
4111                 add_immBlock_pred(body_block, jmp);
4112         }
4113
4114         mature_immBlock(body_block);
4115         mature_immBlock(false_block);
4116         mature_immBlock(step_block);
4117         mature_immBlock(header_block);
4118         mature_immBlock(false_block);
4119
4120         set_cur_block(false_block);
4121 }
4122
4123 static void create_jump_statement(const statement_t *statement,
4124                                   ir_node *target_block)
4125 {
4126         if(get_cur_block() == NULL)
4127                 return;
4128
4129         dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4130         ir_node  *jump = new_d_Jmp(dbgi);
4131         add_immBlock_pred(target_block, jump);
4132
4133         set_cur_block(NULL);
4134 }
4135
4136 static void switch_statement_to_firm(const switch_statement_t *statement)
4137 {
4138         dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4139
4140         ir_node *expression  = expression_to_firm(statement->expression);
4141         ir_node *cond        = new_d_Cond(dbgi, expression);
4142         ir_node *break_block = new_immBlock();
4143
4144         set_cur_block(NULL);
4145
4146         ir_node *const old_switch_cond       = current_switch_cond;
4147         ir_node *const old_break_label       = break_label;
4148         const bool     old_saw_default_label = saw_default_label;
4149         saw_default_label                    = false;
4150         current_switch_cond                  = cond;
4151         break_label                          = break_block;
4152
4153         if (statement->body != NULL) {
4154                 statement_to_firm(statement->body);
4155         }
4156
4157         if(get_cur_block() != NULL) {
4158                 ir_node *jmp = new_Jmp();
4159                 add_immBlock_pred(break_block, jmp);
4160         }
4161
4162         if (!saw_default_label) {
4163                 set_cur_block(get_nodes_block(cond));
4164                 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4165                                                         MAGIC_DEFAULT_PN_NUMBER);
4166                 add_immBlock_pred(break_block, proj);
4167         }
4168
4169         assert(current_switch_cond == cond);
4170         assert(break_label         == break_block);
4171         current_switch_cond = old_switch_cond;
4172         break_label         = old_break_label;
4173         saw_default_label   = old_saw_default_label;
4174
4175         mature_immBlock(break_block);
4176         set_cur_block(break_block);
4177 }
4178
4179 static void case_label_to_firm(const case_label_statement_t *statement)
4180 {
4181         dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4182
4183         ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4184
4185         /* let's create a node and hope firm constant folding creates a Const
4186          * node... */
4187         ir_node *proj;
4188         ir_node *old_block = get_nodes_block(current_switch_cond);
4189         ir_node *block     = new_immBlock();
4190
4191         set_cur_block(old_block);
4192         if(statement->expression != NULL) {
4193                 long start_pn = fold_constant(statement->expression);
4194                 long end_pn = start_pn;
4195                 if (statement->end_range != NULL) {
4196                         end_pn = fold_constant(statement->end_range);
4197                 }
4198                 assert(start_pn <= end_pn);
4199                 /* create jumps for all cases in the given range */
4200                 for (long pn = start_pn; pn <= end_pn; ++pn) {
4201                         if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4202                                 /* oops someone detected our cheating... */
4203                                 panic("magic default pn used");
4204                         }
4205                         proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4206                         add_immBlock_pred(block, proj);
4207                 }
4208         } else {
4209                 saw_default_label = true;
4210                 proj = new_d_defaultProj(dbgi, current_switch_cond,
4211                                          MAGIC_DEFAULT_PN_NUMBER);
4212
4213                 add_immBlock_pred(block, proj);
4214         }
4215
4216         if (fallthrough != NULL) {
4217                 add_immBlock_pred(block, fallthrough);
4218         }
4219         mature_immBlock(block);
4220         set_cur_block(block);
4221
4222         if(statement->statement != NULL) {
4223                 statement_to_firm(statement->statement);
4224         }
4225 }
4226
4227 static ir_node *get_label_block(declaration_t *label)
4228 {
4229         assert(label->namespc == NAMESPACE_LABEL);
4230
4231         if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4232                 return label->v.block;
4233         }
4234         assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4235
4236         ir_node *old_cur_block = get_cur_block();
4237         ir_node *block         = new_immBlock();
4238         set_cur_block(old_cur_block);
4239
4240         label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4241         label->v.block          = block;
4242
4243         ARR_APP1(ir_node *, imature_blocks, block);
4244
4245         return block;
4246 }
4247
4248 static void label_to_firm(const label_statement_t *statement)
4249 {
4250         ir_node *block = get_label_block(statement->label);
4251
4252         if(get_cur_block() != NULL) {
4253                 ir_node *jmp = new_Jmp();
4254                 add_immBlock_pred(block, jmp);
4255         }
4256
4257         set_cur_block(block);
4258         keep_alive(block);
4259
4260         if(statement->statement != NULL) {
4261                 statement_to_firm(statement->statement);
4262         }
4263 }
4264
4265 static void goto_to_firm(const goto_statement_t *statement)
4266 {
4267         if(get_cur_block() == NULL)
4268                 return;
4269
4270         ir_node *block = get_label_block(statement->label);
4271         ir_node *jmp   = new_Jmp();
4272         add_immBlock_pred(block, jmp);
4273
4274         set_cur_block(NULL);
4275 }
4276
4277 typedef enum modifier_t {
4278         ASM_MODIFIER_WRITE_ONLY   = 1 << 0,
4279         ASM_MODIFIER_READ_WRITE   = 1 << 1,
4280         ASM_MODIFIER_COMMUTATIVE  = 1 << 2,
4281         ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4282 } modifier_t;
4283
4284 static void asm_statement_to_firm(const asm_statement_t *statement)
4285 {
4286         (void) statement;
4287         fprintf(stderr, "WARNING asm not implemented yet!\n");
4288 #if 0
4289         bool needs_memory = false;
4290
4291         size_t         n_clobbers = 0;
4292         asm_clobber_t *clobber    = statement->clobbers;
4293         for( ; clobber != NULL; clobber = clobber->next) {
4294                 if(strcmp(clobber->clobber, "memory") == 0) {
4295                         needs_memory = true;
4296                         continue;
4297                 }
4298
4299                 ident *id = new_id_from_str(clobber->clobber);
4300                 obstack_ptr_grow(&asm_obst, id);
4301                 ++n_clobbers;
4302         }
4303         assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4304         ident **clobbers = NULL;
4305         if(n_clobbers > 0) {
4306                 clobbers = obstack_finish(&asm_obst);
4307         }
4308
4309         /* find and count input and output constraints */
4310         asm_constraint_t *constraint = statement->inputs;
4311         for( ; constraint != NULL; constraint = constraint->next) {
4312                 int  modifiers      = 0;
4313                 bool supports_memop = false;
4314                 for(const char *c = constraint->constraints; *c != 0; ++c) {
4315                         /* TODO: improve error messages */
4316                         switch(*c) {
4317                         case '?':
4318                         case '!':
4319                                 panic("multiple alternative assembler constraints not "
4320                                       "supported");
4321                         case 'm':
4322                         case 'o':
4323                         case 'V':
4324                         case '<':
4325                         case '>':
4326                         case 'X':
4327                                 supports_memop = true;
4328                                 obstack_1grow(&asm_obst, *c);
4329                                 break;
4330                         case '=':
4331                                 if(modifiers & ASM_MODIFIER_READ_WRITE)
4332                                         panic("inconsistent register constraints");
4333                                 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4334                                 break;
4335                         case '+':
4336                                 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4337                                         panic("inconsistent register constraints");
4338                                 modifiers |= ASM_MODIFIER_READ_WRITE;
4339                                 break;
4340                         case '&':
4341                                 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4342                                 panic("early clobber assembler constraint not supported yet");
4343                                 break;
4344                         case '%':
4345                                 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4346                                 panic("commutative assembler constraint not supported yet");
4347                                 break;
4348                         case '#':
4349                                 /* skip register preferences stuff... */
4350                                 while(*c != 0 && *c != ',')
4351                                         ++c;
4352                                 break;
4353                         case '*':
4354                                 /* skip register preferences stuff... */
4355                                 ++c;
4356                                 break;
4357                         default:
4358                                 obstack_1grow(&asm_obst, *c);
4359                                 break;
4360                         }
4361                 }
4362                 obstack_1grow(&asm_obst, '\0');
4363                 const char *constraint_string = obstack_finish(&asm_obst);
4364
4365                 needs_memory |= supports_memop;
4366                 if(supports_memop) {
4367
4368                 }
4369         }
4370 #endif
4371 }
4372
4373 static void     ms_try_statement_to_firm(ms_try_statement_t *statement) {
4374         statement_to_firm(statement->try_statement);
4375         warningf(&statement->base.source_position, "structured exception handling ignored");
4376 }
4377
4378 static void     leave_statement_to_firm(leave_statement_t *statement) {
4379         errorf(&statement->base.source_position, "__leave not supported yet");
4380 }
4381
4382 static void statement_to_firm(statement_t *statement)
4383 {
4384         switch(statement->kind) {
4385         case STATEMENT_INVALID:
4386                 panic("invalid statement found");
4387                 return;
4388         case STATEMENT_EMPTY:
4389                 /* nothing */
4390                 return;
4391         case STATEMENT_COMPOUND:
4392                 compound_statement_to_firm(&statement->compound);
4393                 return;
4394         case STATEMENT_RETURN:
4395                 return_statement_to_firm(&statement->returns);
4396                 return;
4397         case STATEMENT_EXPRESSION:
4398                 expression_statement_to_firm(&statement->expression);
4399                 return;
4400         case STATEMENT_IF:
4401                 if_statement_to_firm(&statement->ifs);
4402                 return;
4403         case STATEMENT_WHILE:
4404                 while_statement_to_firm(&statement->whiles);
4405                 return;
4406         case STATEMENT_DO_WHILE:
4407                 do_while_statement_to_firm(&statement->do_while);
4408                 return;
4409         case STATEMENT_DECLARATION:
4410                 declaration_statement_to_firm(&statement->declaration);
4411                 return;
4412         case STATEMENT_BREAK:
4413                 create_jump_statement(statement, break_label);
4414                 return;
4415         case STATEMENT_CONTINUE:
4416                 create_jump_statement(statement, continue_label);
4417                 return;
4418         case STATEMENT_SWITCH:
4419                 switch_statement_to_firm(&statement->switchs);
4420                 return;
4421         case STATEMENT_CASE_LABEL:
4422                 case_label_to_firm(&statement->case_label);
4423                 return;
4424         case STATEMENT_FOR:
4425                 for_statement_to_firm(&statement->fors);
4426                 return;
4427         case STATEMENT_LABEL:
4428                 label_to_firm(&statement->label);
4429                 return;
4430         case STATEMENT_GOTO:
4431                 goto_to_firm(&statement->gotos);
4432                 return;
4433         case STATEMENT_ASM:
4434                 asm_statement_to_firm(&statement->asms);
4435                 return;
4436         case STATEMENT_MS_TRY:
4437                 ms_try_statement_to_firm(&statement->ms_try);
4438                 return;
4439         case STATEMENT_LEAVE:
4440                 leave_statement_to_firm(&statement->leave);
4441                 return;
4442         }
4443         panic("Statement not implemented\n");
4444 }
4445
4446 static int count_decls_in_expression(const expression_t *expression);
4447
4448 static int count_local_declarations(const declaration_t *      decl,
4449                                     const declaration_t *const end)
4450 {
4451         int count = 0;
4452         for (; decl != end; decl = decl->next) {
4453                 if(decl->namespc != NAMESPACE_NORMAL)
4454                         continue;
4455                 const type_t *type = skip_typeref(decl->type);
4456                 if (!decl->address_taken && is_type_scalar(type))
4457                         ++count;
4458                 const initializer_t *initializer = decl->init.initializer;
4459                 /* FIXME: should walk initializer hierarchies... */
4460                 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4461                         count += count_decls_in_expression(initializer->value.value);
4462                 }
4463         }
4464         return count;
4465 }
4466
4467 static int count_decls_in_expression(const expression_t *expression) {
4468         int count = 0;
4469
4470         if(expression == NULL)
4471                 return 0;
4472
4473         switch((expression_kind_t) expression->base.kind) {
4474         case EXPR_STATEMENT:
4475                 return count_decls_in_stmts(expression->statement.statement);
4476         EXPR_BINARY_CASES {
4477                 int count_left  = count_decls_in_expression(expression->binary.left);
4478                 int count_right = count_decls_in_expression(expression->binary.right);
4479                 return count_left + count_right;
4480         }
4481         EXPR_UNARY_CASES
4482                 return count_decls_in_expression(expression->unary.value);
4483         case EXPR_CALL: {
4484                 call_argument_t *argument = expression->call.arguments;
4485                 for( ; argument != NULL; argument = argument->next) {
4486                         count += count_decls_in_expression(argument->expression);
4487                 }
4488                 return count;
4489         }
4490
4491         case EXPR_UNKNOWN:
4492         case EXPR_INVALID:
4493                 panic("unexpected expression kind");
4494
4495         case EXPR_COMPOUND_LITERAL:
4496                 /* TODO... */
4497                 break;
4498
4499         case EXPR_CONDITIONAL:
4500                 count += count_decls_in_expression(expression->conditional.condition);
4501                 count += count_decls_in_expression(expression->conditional.true_expression);
4502                 count += count_decls_in_expression(expression->conditional.false_expression);
4503                 return count;
4504
4505         case EXPR_BUILTIN_PREFETCH:
4506                 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4507                 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4508                 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4509                 return count;
4510
4511         case EXPR_BUILTIN_CONSTANT_P:
4512                 count += count_decls_in_expression(expression->builtin_constant.value);
4513                 return count;
4514
4515         case EXPR_SELECT:
4516                 count += count_decls_in_expression(expression->select.compound);
4517                 return count;
4518
4519         case EXPR_ARRAY_ACCESS:
4520                 count += count_decls_in_expression(expression->array_access.array_ref);
4521                 count += count_decls_in_expression(expression->array_access.index);
4522                 return count;
4523
4524         case EXPR_CLASSIFY_TYPE:
4525                 count += count_decls_in_expression(expression->classify_type.type_expression);
4526                 return count;
4527
4528         case EXPR_SIZEOF:
4529         case EXPR_ALIGNOF: {
4530                 expression_t *tp_expression = expression->typeprop.tp_expression;
4531                 if (tp_expression != NULL) {
4532                         count += count_decls_in_expression(tp_expression);
4533                 }
4534                 return count;
4535         }
4536
4537         case EXPR_OFFSETOF:
4538         case EXPR_REFERENCE:
4539         case EXPR_CONST:
4540         case EXPR_CHARACTER_CONSTANT:
4541         case EXPR_WIDE_CHARACTER_CONSTANT:
4542         case EXPR_STRING_LITERAL:
4543         case EXPR_WIDE_STRING_LITERAL:
4544         case EXPR_FUNCNAME:
4545         case EXPR_BUILTIN_SYMBOL:
4546         case EXPR_VA_START:
4547         case EXPR_VA_ARG:
4548                 break;
4549         }
4550
4551         /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4552          * (or implement all the missing expressions here/implement a walker)
4553          */
4554
4555         return 0;
4556 }
4557
4558 static int count_decls_in_stmts(const statement_t *stmt)
4559 {
4560         int count = 0;
4561         for (; stmt != NULL; stmt = stmt->base.next) {
4562                 switch (stmt->kind) {
4563                         case STATEMENT_EMPTY:
4564                                 break;
4565
4566                         case STATEMENT_DECLARATION: {
4567                                 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4568                                 count += count_local_declarations(decl_stmt->declarations_begin,
4569                                                                   decl_stmt->declarations_end->next);
4570                                 break;
4571                         }
4572
4573                         case STATEMENT_COMPOUND: {
4574                                 const compound_statement_t *const comp =
4575                                         &stmt->compound;
4576                                 count += count_decls_in_stmts(comp->statements);
4577                                 break;
4578                         }
4579
4580                         case STATEMENT_IF: {
4581                                 const if_statement_t *const if_stmt = &stmt->ifs;
4582                                 count += count_decls_in_expression(if_stmt->condition);
4583                                 count += count_decls_in_stmts(if_stmt->true_statement);
4584                                 count += count_decls_in_stmts(if_stmt->false_statement);
4585                                 break;
4586                         }
4587
4588                         case STATEMENT_SWITCH: {
4589                                 const switch_statement_t *const switch_stmt = &stmt->switchs;
4590                                 count += count_decls_in_expression(switch_stmt->expression);
4591                                 count += count_decls_in_stmts(switch_stmt->body);
4592                                 break;
4593                         }
4594
4595                         case STATEMENT_LABEL: {
4596                                 const label_statement_t *const label_stmt = &stmt->label;
4597                                 if(label_stmt->statement != NULL) {
4598                                         count += count_decls_in_stmts(label_stmt->statement);
4599                                 }
4600                                 break;
4601                         }
4602
4603                         case STATEMENT_WHILE: {
4604                                 const while_statement_t *const while_stmt = &stmt->whiles;
4605                                 count += count_decls_in_expression(while_stmt->condition);
4606                                 count += count_decls_in_stmts(while_stmt->body);
4607                                 break;
4608                         }
4609
4610                         case STATEMENT_DO_WHILE: {
4611                                 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4612                                 count += count_decls_in_expression(do_while_stmt->condition);
4613                                 count += count_decls_in_stmts(do_while_stmt->body);
4614                                 break;
4615                         }
4616
4617                         case STATEMENT_FOR: {
4618                                 const for_statement_t *const for_stmt = &stmt->fors;
4619                                 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4620                                 count += count_decls_in_expression(for_stmt->initialisation);
4621                                 count += count_decls_in_expression(for_stmt->condition);
4622                                 count += count_decls_in_expression(for_stmt->step);
4623                                 count += count_decls_in_stmts(for_stmt->body);
4624                                 break;
4625                         }
4626
4627                         case STATEMENT_CASE_LABEL: {
4628                                 const case_label_statement_t *label = &stmt->case_label;
4629                                 count += count_decls_in_expression(label->expression);
4630                                 if(label->statement != NULL) {
4631                                         count += count_decls_in_stmts(label->statement);
4632                                 }
4633                                 break;
4634                         }
4635
4636                         case STATEMENT_ASM:
4637                         case STATEMENT_BREAK:
4638                         case STATEMENT_CONTINUE:
4639                                 break;
4640
4641                         case STATEMENT_EXPRESSION: {
4642                                 const expression_statement_t *expr_stmt = &stmt->expression;
4643                                 count += count_decls_in_expression(expr_stmt->expression);
4644                                 break;
4645                         }
4646
4647                         case STATEMENT_GOTO:
4648                         case STATEMENT_LEAVE:
4649                         case STATEMENT_INVALID:
4650                                 break;
4651
4652                         case STATEMENT_RETURN: {
4653                                 const return_statement_t *ret_stmt = &stmt->returns;
4654                                 count += count_decls_in_expression(ret_stmt->value);
4655                                 break;
4656                         }
4657
4658                         case STATEMENT_MS_TRY: {
4659                                 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4660                                 count += count_decls_in_stmts(try_stmt->try_statement);
4661                                 if(try_stmt->except_expression != NULL)
4662                                         count += count_decls_in_expression(try_stmt->except_expression);
4663                                 count += count_decls_in_stmts(try_stmt->final_statement);
4664                                 break;
4665                         }
4666                 }
4667         }
4668         return count;
4669 }
4670
4671 static int get_function_n_local_vars(declaration_t *declaration)
4672 {
4673         int count = 0;
4674
4675         /* count parameters */
4676         count += count_local_declarations(declaration->scope.declarations, NULL);
4677
4678         /* count local variables declared in body */
4679         count += count_decls_in_stmts(declaration->init.statement);
4680
4681         return count;
4682 }
4683
4684 static void initialize_function_parameters(declaration_t *declaration)
4685 {
4686         ir_graph        *irg             = current_ir_graph;
4687         ir_node         *args            = get_irg_args(irg);
4688         ir_node         *start_block     = get_irg_start_block(irg);
4689         ir_type         *function_irtype = get_ir_type(declaration->type);
4690
4691         int            n         = 0;
4692         declaration_t *parameter = declaration->scope.declarations;
4693         for( ; parameter != NULL; parameter = parameter->next, ++n) {
4694                 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4695                 type_t *type = skip_typeref(parameter->type);
4696
4697                 bool needs_entity = parameter->address_taken;
4698                 assert(!is_type_array(type));
4699                 if(is_type_compound(type)) {
4700                         needs_entity = true;
4701                 }
4702
4703                 if(needs_entity) {
4704                         ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4705                         ident     *id     = new_id_from_str(parameter->symbol->string);
4706                         set_entity_ident(entity, id);
4707
4708                         parameter->declaration_kind
4709                                 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4710                         parameter->v.entity = entity;
4711                         continue;
4712                 }
4713
4714                 ir_mode *mode = get_ir_mode(parameter->type);
4715                 long     pn   = n;
4716                 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4717
4718                 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4719                 parameter->v.value_number   = next_value_number_function;
4720                 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4721                 ++next_value_number_function;
4722
4723                 set_value(parameter->v.value_number, proj);
4724         }
4725 }
4726
4727 /**
4728  * Handle additional decl modifiers for IR-graphs
4729  *
4730  * @param irg            the IR-graph
4731  * @param dec_modifiers  additional modifiers
4732  */
4733 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4734 {
4735         if (decl_modifiers & DM_NORETURN) {
4736                 /* TRUE if the declaration includes the Microsoft
4737                    __declspec(noreturn) specifier. */
4738                 set_irg_additional_property(irg, mtp_property_noreturn);
4739         }
4740         if (decl_modifiers & DM_NOTHROW) {
4741                 /* TRUE if the declaration includes the Microsoft
4742                    __declspec(nothrow) specifier. */
4743                 set_irg_additional_property(irg, mtp_property_nothrow);
4744         }
4745         if (decl_modifiers & DM_NAKED) {
4746                 /* TRUE if the declaration includes the Microsoft
4747                    __declspec(naked) specifier. */
4748                 set_irg_additional_property(irg, mtp_property_naked);
4749         }
4750         if (decl_modifiers & DM_FORCEINLINE) {
4751                 /* TRUE if the declaration includes the
4752                    Microsoft __forceinline specifier. */
4753                 set_irg_inline_property(irg, irg_inline_forced);
4754         }
4755         if (decl_modifiers & DM_NOINLINE) {
4756                 /* TRUE if the declaration includes the Microsoft
4757                    __declspec(noinline) specifier. */
4758                 set_irg_inline_property(irg, irg_inline_forbidden);
4759         }
4760 }
4761
4762 static void create_function(declaration_t *declaration)
4763 {
4764         ir_entity *function_entity = get_function_entity(declaration);
4765
4766         if(declaration->init.statement == NULL)
4767                 return;
4768
4769         current_function_decl = declaration;
4770         current_function_name = NULL;
4771         current_funcsig       = NULL;
4772
4773         assert(imature_blocks == NULL);
4774         imature_blocks = NEW_ARR_F(ir_node*, 0);
4775
4776         int       n_local_vars = get_function_n_local_vars(declaration);
4777         ir_graph *irg          = new_ir_graph(function_entity, n_local_vars);
4778
4779         set_irg_fp_model(irg, firm_opt.fp_model);
4780         tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4781         set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4782
4783         ir_node *first_block = get_cur_block();
4784
4785         /* set inline flags */
4786         if (declaration->is_inline)
4787                 set_irg_inline_property(irg, irg_inline_recomended);
4788         handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4789
4790         next_value_number_function = 0;
4791         initialize_function_parameters(declaration);
4792
4793         statement_to_firm(declaration->init.statement);
4794
4795         ir_node *end_block = get_irg_end_block(irg);
4796
4797         /* do we have a return statement yet? */
4798         if(get_cur_block() != NULL) {
4799                 type_t *type = skip_typeref(declaration->type);
4800                 assert(is_type_function(type));
4801                 const function_type_t *func_type   = &type->function;
4802                 const type_t          *return_type
4803                         = skip_typeref(func_type->return_type);
4804
4805                 ir_node *ret;
4806                 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4807                         ret = new_Return(get_store(), 0, NULL);
4808                 } else {
4809                         ir_mode *mode;
4810                         if(is_type_scalar(return_type)) {
4811                                 mode = get_ir_mode(func_type->return_type);
4812                         } else {
4813                                 mode = mode_P_data;
4814                         }
4815
4816                         ir_node *in[1];
4817                         /* §5.1.2.2.3 main implicitly returns 0 */
4818                         if (strcmp(declaration->symbol->string, "main") == 0) {
4819                                 in[0] = new_Const(mode, get_mode_null(mode));
4820                         } else {
4821                                 in[0] = new_Unknown(mode);
4822                         }
4823                         ret = new_Return(get_store(), 1, in);
4824                 }
4825                 add_immBlock_pred(end_block, ret);
4826         }
4827
4828         for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4829                 mature_immBlock(imature_blocks[i]);
4830         }
4831         DEL_ARR_F(imature_blocks);
4832         imature_blocks = NULL;
4833
4834         mature_immBlock(first_block);
4835         mature_immBlock(end_block);
4836
4837         irg_finalize_cons(irg);
4838
4839         /* finalize the frame type */
4840         ir_type *frame_type = get_irg_frame_type(irg);
4841         int      n          = get_compound_n_members(frame_type);
4842         int      align_all  = 4;
4843         int      offset     = 0;
4844         for(int i = 0; i < n; ++i) {
4845                 ir_entity *entity      = get_compound_member(frame_type, i);
4846                 ir_type   *entity_type = get_entity_type(entity);
4847
4848                 int align = get_type_alignment_bytes(entity_type);
4849                 if(align > align_all)
4850                         align_all = align;
4851                 int misalign = 0;
4852                 if(align > 0) {
4853                         misalign  = offset % align;
4854                         if(misalign > 0) {
4855                                 offset += align - misalign;
4856                         }
4857                 }
4858
4859                 set_entity_offset(entity, offset);
4860                 offset += get_type_size_bytes(entity_type);
4861         }
4862         set_type_size_bytes(frame_type, offset);
4863         set_type_alignment_bytes(frame_type, align_all);
4864
4865         irg_vrfy(irg);
4866 }
4867
4868 static void scope_to_firm(scope_t *scope)
4869 {
4870         /* first pass: create declarations */
4871         declaration_t *declaration = scope->declarations;
4872         for( ; declaration != NULL; declaration = declaration->next) {
4873                 if(declaration->namespc != NAMESPACE_NORMAL)
4874                         continue;
4875                 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4876                                 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4877                         continue;
4878                 if(declaration->symbol == NULL)
4879                         continue;
4880
4881                 type_t *type = skip_typeref(declaration->type);
4882                 if(is_type_function(type)) {
4883                         get_function_entity(declaration);
4884                 } else {
4885                         create_global_variable(declaration);
4886                 }
4887         }
4888
4889         /* second pass: create code/initializers */
4890         declaration = scope->declarations;
4891         for( ; declaration != NULL; declaration = declaration->next) {
4892                 if(declaration->namespc != NAMESPACE_NORMAL)
4893                         continue;
4894                 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4895                                 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4896                         continue;
4897                 if(declaration->symbol == NULL)
4898                         continue;
4899
4900                 type_t *type = declaration->type;
4901                 if(type->kind == TYPE_FUNCTION) {
4902                         create_function(declaration);
4903                 } else {
4904                         assert(declaration->declaration_kind
4905                                         == DECLARATION_KIND_GLOBAL_VARIABLE);
4906                         current_ir_graph = get_const_code_irg();
4907                         create_declaration_initializer(declaration);
4908                 }
4909         }
4910 }
4911
4912 void init_ast2firm(void)
4913 {
4914         obstack_init(&asm_obst);
4915         init_atomic_modes();
4916
4917         id_underscore = new_id_from_chars("_", 1);
4918         id_imp        = new_id_from_chars("__imp_", 6);
4919
4920         /* OS option must be set to the backend */
4921         const char *s = "ia32-gasmode=linux";
4922         switch (firm_opt.os_support) {
4923         case OS_SUPPORT_WIN32:
4924                 create_ld_ident = create_ld_ident_win32;
4925                 s = "ia32-gasmode=mingw";
4926                 break;
4927         case OS_SUPPORT_LINUX:
4928                 create_ld_ident = create_ld_ident_linux_elf;
4929                 s = "ia32-gasmode=linux"; break;
4930                 break;
4931         case OS_SUPPORT_MACHO:
4932                 create_ld_ident = create_ld_ident_macho;
4933                 s = "ia32-gasmode=macho"; break;
4934                 break;
4935         }
4936         firm_be_option(s);
4937
4938         /* create idents for all known runtime functions */
4939         for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4940                 rts_idents[i] = new_id_from_str(rts_data[i].name);
4941         }
4942 }
4943
4944 static void init_ir_types(void)
4945 {
4946         static int ir_types_initialized = 0;
4947         if(ir_types_initialized)
4948                 return;
4949         ir_types_initialized = 1;
4950
4951         type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4952         type_void       = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4953         type_int        = make_atomic_type(ATOMIC_TYPE_INT,  TYPE_QUALIFIER_NONE);
4954
4955         ir_type_int        = get_ir_type(type_int);
4956         ir_type_const_char = get_ir_type(type_const_char);
4957         ir_type_wchar_t    = get_ir_type(type_wchar_t);
4958         ir_type_void       = get_ir_type(type_void);
4959 }
4960
4961 void exit_ast2firm(void)
4962 {
4963         obstack_free(&asm_obst, NULL);
4964 }
4965
4966 void translation_unit_to_firm(translation_unit_t *unit)
4967 {
4968         /* just to be sure */
4969         continue_label      = NULL;
4970         break_label         = NULL;
4971         current_switch_cond = NULL;
4972
4973         init_ir_types();
4974
4975         scope_to_firm(&unit->scope);
4976 }