nsz Git - cparser/blob - ast2firm.c

   1 #include <config.h>
   2
   3 #define _GNU_SOURCE
   4
   5 #include <assert.h>
   6 #include <string.h>
   7 #include <stdbool.h>
   8
   9 #include <libfirm/firm.h>
  10 #include <libfirm/adt/obst.h>
  11
  12 #include "ast2firm.h"
  13
  14 #include "adt/error.h"
  15 #include "adt/array.h"
  16 #include "token_t.h"
  17 #include "type_t.h"
  18 #include "ast_t.h"
  19 #include "parser.h"
  20 #include "lang_features.h"
  21 #include "driver/firm_opt.h"
  22 #include "driver/firm_cmdline.h"
  23
  24 #define MAGIC_DEFAULT_PN_NUMBER     (long) -314159265
  25
  26 static ir_type *ir_type_const_char;
  27 static ir_type *ir_type_wchar_t;
  28 static ir_type *ir_type_void;
  29 static ir_type *ir_type_int;
  30
  31 static type_t *type_const_char;
  32 static type_t *type_void;
  33 static type_t *type_int;
  34
  35 static int       next_value_number_function;
  36 static ir_node  *continue_label;
  37 static ir_node  *break_label;
  38 static ir_node  *current_switch_cond;
  39 static bool      saw_default_label;
  40 static ir_node **imature_blocks;
  41
  42 static const declaration_t *current_function_decl;
  43 static ir_node             *current_function_name;
  44
  45 static struct obstack asm_obst;
  46
  47 typedef enum declaration_type_t {
  48         DECLARATION_TYPE_UNKNOWN,
  49         DECLARATION_TYPE_FUNCTION,
  50         DECLARATION_TYPE_GLOBAL_VARIABLE,
  51         DECLARATION_TYPE_LOCAL_VARIABLE,
  52         DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
  53         DECLARATION_TYPE_COMPOUND_MEMBER,
  54         DECLARATION_TYPE_LABEL_BLOCK,
  55         DECLARATION_TYPE_ENUM_ENTRY
  56 } declaration_type_t;
  57
  58 static ir_type *get_ir_type(type_t *type);
  59 static int count_decls_in_stmts(const statement_t *stmt);
  60
  61 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
  62 {
  63         (void) pos;
  64 #if 0
  65         const declaration_t *declaration = & value_numbers[pos]->declaration;
  66
  67         print_warning_prefix(declaration->source_position);
  68         fprintf(stderr, "variable '%s' might be used uninitialized\n",
  69                         declaration->symbol->string);
  70 #endif
  71         fprintf(stderr, "Some variable might be used uninitialized\n");
  72         return new_r_Unknown(irg, mode);
  73 }
  74
  75 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
  76 {
  77         const source_position_t *pos = (const source_position_t*) dbg;
  78         if(pos == NULL)
  79                 return 0;
  80         return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
  81                                    pos->linenr);
  82 }
  83
  84 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
  85 {
  86         const source_position_t *pos = (const source_position_t*) dbg;
  87         if(pos == NULL)
  88                 return NULL;
  89         if(line != NULL)
  90                 *line = pos->linenr;
  91         return pos->input_name;
  92 }
  93
  94 static dbg_info *get_dbg_info(const source_position_t *pos)
  95 {
  96         return (dbg_info*) pos;
  97 }
  98
  99 static unsigned unique_id = 0;
 100
 101 static ident *unique_ident(const char *tag)
 102 {
 103         char buf[256];
 104
 105         snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
 106         unique_id++;
 107         return new_id_from_str(buf);
 108 }
 109
 110 /**
 111  * Return the signed integer mode of size bytes.
 112  *
 113  * @param size   the size
 114  */
 115 static ir_mode *get_smode(unsigned size)
 116 {
 117         static ir_mode *s_modes[16 + 1] = {0, };
 118         ir_mode *res;
 119
 120         if (size <= 0 || size > 16)
 121                 return NULL;
 122
 123         res = s_modes[size];
 124         if (res == NULL) {
 125                 unsigned bits;
 126         char name[32];
 127
 128         bits = size * 8;
 129         snprintf(name, sizeof(name), "i%u", bits);
 130         res = new_ir_mode(name, irms_int_number, bits, 1, irma_twos_complement,
 131                                         bits <= machine_size ? machine_size : bits );
 132
 133                 s_modes[size] = res;
 134         }
 135         return res;
 136 }
 137
 138 /**
 139  * Return the unsigned integer mode of size bytes.
 140  *
 141  * @param size  the size
 142  */
 143 static ir_mode *get_umode(unsigned size)
 144 {
 145         static ir_mode *u_modes[16 + 1] = {0, };
 146         ir_mode *res;
 147
 148         if (size <= 0 || size > 16)
 149                 return NULL;
 150
 151         res = u_modes[size];
 152         if (res == NULL) {
 153                 unsigned bits;
 154                 char name[32];
 155
 156                 bits = size * 8;
 157                 snprintf(name, sizeof(name), "u%u", bits);
 158                 res = new_ir_mode(name, irms_int_number, bits, 0, irma_twos_complement,
 159                                                 bits <= machine_size ? machine_size : bits );
 160
 161                 u_modes[size] = res;
 162         }
 163         return res;
 164 }
 165
 166 /**
 167  * Return the pointer mode of size bytes.
 168  *
 169  * @param size  the size
 170  */
 171 static ir_mode *get_ptrmode(unsigned size, char *name)
 172 {
 173         static ir_mode *p_modes[16 + 1] = {0, };
 174         ir_mode *res;
 175
 176         if (size <= 0 || size > 16)
 177                 return NULL;
 178
 179         res = p_modes[size];
 180         if (res == NULL) {
 181                 unsigned bits;
 182                 char buf[32];
 183
 184                 bits = size * 8;
 185                 if (name == NULL) {
 186                         snprintf(buf, sizeof(buf), "p%u", bits);
 187                         name = buf;
 188                 }
 189                 res = new_ir_mode(name, irms_reference, bits, 0, irma_twos_complement,
 190                                                 bits <= machine_size ? machine_size : bits);
 191
 192                 p_modes[size] = res;
 193
 194                 set_reference_mode_signed_eq(res, get_smode(size));
 195                 set_reference_mode_unsigned_eq(res, get_umode(size));
 196         }
 197         return res;
 198 }
 199
 200 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST];
 201
 202 static ir_mode *mode_int, *mode_uint;
 203
 204 /**
 205  * Initialises the atomic modes depending on the machine size.
 206  */
 207 static void init_atomic_modes(void) {
 208         unsigned int_size   = machine_size < 32 ? 2 : 4;
 209         unsigned long_size  = machine_size < 64 ? 4 : 8;
 210         unsigned llong_size = machine_size < 32 ? 4 : 8;
 211
 212         /* firm has no real void... */
 213         _atomic_modes[ATOMIC_TYPE_VOID]        = mode_T;
 214         _atomic_modes[ATOMIC_TYPE_CHAR]        = char_is_signed ? get_smode(1) : get_umode(1);
 215         _atomic_modes[ATOMIC_TYPE_SCHAR]       = get_smode(1);
 216         _atomic_modes[ATOMIC_TYPE_UCHAR]       = get_umode(1);
 217         _atomic_modes[ATOMIC_TYPE_SHORT]       = get_smode(2);
 218         _atomic_modes[ATOMIC_TYPE_USHORT]      = get_umode(2);
 219         _atomic_modes[ATOMIC_TYPE_INT]         = get_smode(int_size);
 220         _atomic_modes[ATOMIC_TYPE_UINT]        = get_umode(int_size);
 221         _atomic_modes[ATOMIC_TYPE_LONG]        = get_smode(long_size);
 222         _atomic_modes[ATOMIC_TYPE_ULONG]       = get_umode(long_size);
 223         _atomic_modes[ATOMIC_TYPE_LONGLONG]    = get_smode(llong_size);
 224         _atomic_modes[ATOMIC_TYPE_ULONGLONG]   = get_umode(llong_size);
 225         _atomic_modes[ATOMIC_TYPE_FLOAT]       = mode_F;
 226         _atomic_modes[ATOMIC_TYPE_DOUBLE]      = mode_D;
 227         _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = mode_E;
 228         _atomic_modes[ATOMIC_TYPE_BOOL]        = get_umode(int_size);
 229
 230 #ifdef PROVIDE_COMPLEX
 231         _atomic_modes[ATOMIC_TYPE_BOOL]                  = _atomic_modes[ATOMIC_TYPE_INT];
 232         _atomic_modes[ATOMIC_TYPE_FLOAT_IMAGINARY]       = _atomic_modes[ATOMIC_TYPE_FLOAT];
 233         _atomic_modes[ATOMIC_TYPE_DOUBLE_IMAGINARY]      = _atomic_modes[ATOMIC_TYPE_DOUBLE];
 234         _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY] = _atomic_modes[ATOMIC_TYPE_LONG_DOUBLE];
 235 #endif
 236
 237         /* Hmm, pointers should be machine size */
 238         set_modeP_data(get_ptrmode(machine_size >> 3, NULL));
 239         set_modeP_code(get_ptrmode(machine_size >> 3, NULL));
 240
 241         mode_int  = _atomic_modes[ATOMIC_TYPE_INT];
 242         mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
 243 }
 244
 245 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
 246 {
 247         ir_mode *res = NULL;
 248         if ((unsigned)atomic_type->atype < (unsigned)ATOMIC_TYPE_LAST)
 249                 res = _atomic_modes[(unsigned)atomic_type->atype];
 250         if (res == NULL)
 251                 panic("Encountered unknown atomic type");
 252         return res;
 253 }
 254
 255 static unsigned get_type_size(type_t *type);
 256
 257 static unsigned get_atomic_type_size(const atomic_type_t *type)
 258 {
 259         switch(type->atype) {
 260         case ATOMIC_TYPE_CHAR:
 261         case ATOMIC_TYPE_SCHAR:
 262         case ATOMIC_TYPE_UCHAR:
 263                 return 1;
 264
 265         case ATOMIC_TYPE_SHORT:
 266         case ATOMIC_TYPE_USHORT:
 267                 return 2;
 268
 269         case ATOMIC_TYPE_BOOL:
 270         case ATOMIC_TYPE_INT:
 271         case ATOMIC_TYPE_UINT:
 272                 return machine_size >> 3;
 273
 274         case ATOMIC_TYPE_LONG:
 275         case ATOMIC_TYPE_ULONG:
 276                 return machine_size > 16 ? machine_size >> 3 : 4;
 277
 278         case ATOMIC_TYPE_LONGLONG:
 279         case ATOMIC_TYPE_ULONGLONG:
 280                 return machine_size > 16 ? 8 : 4;
 281
 282         case ATOMIC_TYPE_FLOAT:
 283                 return 4;
 284
 285         case ATOMIC_TYPE_DOUBLE:
 286                 return 8;
 287
 288         case ATOMIC_TYPE_LONG_DOUBLE:
 289                 return 12;
 290
 291         case ATOMIC_TYPE_VOID:
 292                 return 1;
 293
 294         case ATOMIC_TYPE_INVALID:
 295         case ATOMIC_TYPE_LAST:
 296                 break;
 297         }
 298         panic("Trying to determine size of invalid atomic type");
 299 }
 300
 301 static unsigned get_compound_type_size(compound_type_t *type)
 302 {
 303         ir_type *irtype = get_ir_type((type_t*) type);
 304         return get_type_size_bytes(irtype);
 305 }
 306
 307 static unsigned get_array_type_size(array_type_t *type)
 308 {
 309         ir_type *irtype = get_ir_type((type_t*) type);
 310         return get_type_size_bytes(irtype);
 311 }
 312
 313
 314 static unsigned get_type_size(type_t *type)
 315 {
 316         type = skip_typeref(type);
 317
 318         switch(type->kind) {
 319         case TYPE_ATOMIC:
 320                 return get_atomic_type_size(&type->atomic);
 321         case TYPE_ENUM:
 322                 return get_mode_size_bytes(mode_int);
 323         case TYPE_COMPOUND_UNION:
 324         case TYPE_COMPOUND_STRUCT:
 325                 return get_compound_type_size(&type->compound);
 326         case TYPE_FUNCTION:
 327                 /* just a pointer to the function */
 328                 return get_mode_size_bytes(mode_P_code);
 329         case TYPE_POINTER:
 330                 return get_mode_size_bytes(mode_P_data);
 331         case TYPE_ARRAY:
 332                 return get_array_type_size(&type->array);
 333         case TYPE_BUILTIN:
 334                 return get_type_size(type->builtin.real_type);
 335         case TYPE_TYPEDEF:
 336         case TYPE_TYPEOF:
 337         case TYPE_INVALID:
 338                 break;
 339         }
 340         panic("Trying to determine size of invalid type");
 341 }
 342
 343 static unsigned count_parameters(const function_type_t *function_type)
 344 {
 345         unsigned count = 0;
 346
 347         function_parameter_t *parameter = function_type->parameters;
 348         for ( ; parameter != NULL; parameter = parameter->next) {
 349                 ++count;
 350         }
 351
 352         return count;
 353 }
 354
 355
 356
 357
 358 static long fold_constant(const expression_t *expression);
 359
 360 static ir_type *create_atomic_type(const atomic_type_t *type)
 361 {
 362         ir_mode *mode   = get_atomic_mode(type);
 363         ident   *id     = get_mode_ident(mode);
 364         ir_type *irtype = new_type_primitive(id, mode);
 365
 366         if(type->atype == ATOMIC_TYPE_LONG_DOUBLE) {
 367                 set_type_alignment_bytes(irtype, 4);
 368         }
 369
 370         return irtype;
 371 }
 372
 373 static ir_type *create_method_type(const function_type_t *function_type)
 374 {
 375         type_t  *return_type  = function_type->return_type;
 376
 377         ident   *id           = unique_ident("functiontype");
 378         int      n_parameters = count_parameters(function_type);
 379         int      n_results    = return_type == type_void ? 0 : 1;
 380         ir_type *irtype       = new_type_method(id, n_parameters, n_results);
 381
 382         if(return_type != type_void) {
 383                 ir_type *restype = get_ir_type(return_type);
 384                 set_method_res_type(irtype, 0, restype);
 385         }
 386
 387         function_parameter_t *parameter = function_type->parameters;
 388         int                   n         = 0;
 389         for( ; parameter != NULL; parameter = parameter->next) {
 390                 ir_type *p_irtype = get_ir_type(parameter->type);
 391                 set_method_param_type(irtype, n, p_irtype);
 392                 ++n;
 393         }
 394
 395         if(function_type->variadic || function_type->unspecified_parameters) {
 396                 set_method_variadicity(irtype, variadicity_variadic);
 397         }
 398
 399         return irtype;
 400 }
 401
 402 static ir_type *create_pointer_type(pointer_type_t *type)
 403 {
 404         type_t  *points_to = type->points_to;
 405         ir_type *ir_points_to;
 406         /* Avoid endless recursion if the points_to type contains this poiner type
 407          * again (might be a struct). We therefore first create a void* pointer
 408          * and then set the real points_to type
 409          */
 410         ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
 411                                             ir_type_void, mode_P_data);
 412         type->type.firm_type  = ir_type;
 413
 414         ir_points_to = get_ir_type(points_to);
 415         set_pointer_points_to_type(ir_type, ir_points_to);
 416
 417         return ir_type;
 418 }
 419
 420 static ir_type *create_array_type(array_type_t *type)
 421 {
 422         type_t  *element_type    = type->element_type;
 423         ir_type *ir_element_type = get_ir_type(element_type);
 424
 425         ident   *id      = unique_ident("array");
 426         ir_type *ir_type = new_type_array(id, 1, ir_element_type);
 427
 428         if(type->size != NULL) {
 429                 int n_elements = fold_constant(type->size);
 430
 431                 set_array_bounds_int(ir_type, 0, 0, n_elements);
 432
 433                 size_t elemsize = get_type_size_bytes(ir_element_type);
 434                 int align = get_type_alignment_bytes(ir_element_type);
 435                 if(elemsize % align > 0) {
 436                         elemsize += align - (elemsize % align);
 437                 }
 438                 set_type_size_bytes(ir_type, n_elements * elemsize);
 439                 set_type_alignment_bytes(ir_type, align);
 440                 set_type_state(ir_type, layout_fixed);
 441         } else {
 442                 set_array_lower_bound_int(ir_type, 0, 0);
 443         }
 444
 445         return ir_type;
 446 }
 447
 448 #define INVALID_TYPE ((ir_type_ptr)-1)
 449
 450 static ir_type *create_struct_type(compound_type_t *type)
 451 {
 452         symbol_t *symbol = type->declaration->symbol;
 453         ident    *id;
 454         if(symbol != NULL) {
 455                 id = unique_ident(symbol->string);
 456         } else {
 457                 id = unique_ident("__anonymous_struct");
 458         }
 459         ir_type *ir_type = new_type_struct(id);
 460
 461         type->type.firm_type = ir_type;
 462
 463         int align_all = 1;
 464         int offset    = 0;
 465         declaration_t *entry = type->declaration->context.declarations;
 466         for( ; entry != NULL; entry = entry->next) {
 467                 if(entry->namespc != NAMESPACE_NORMAL)
 468                         continue;
 469
 470                 ident       *ident         = new_id_from_str(entry->symbol->string);
 471                 ir_type_ptr  entry_ir_type = get_ir_type(entry->type);
 472
 473                 int entry_size      = get_type_size_bytes(entry_ir_type);
 474                 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
 475                 int misalign        = offset % entry_alignment;
 476                 if (misalign != 0)
 477                         offset += entry_alignment - misalign;
 478
 479                 dbg_info  *const dbgi   = get_dbg_info(&entry->source_position);
 480                 ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
 481                 set_entity_offset(entity, offset);
 482                 add_struct_member(ir_type, entity);
 483                 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
 484                 entry->v.entity         = entity;
 485
 486                 offset += entry_size;
 487                 if(entry_alignment > align_all) {
 488                         if(entry_alignment % align_all != 0) {
 489                                 panic("Uneven alignments not supported yet");
 490                         }
 491                         align_all = entry_alignment;
 492                 }
 493         }
 494
 495         int misalign = offset % align_all;
 496         offset += misalign;
 497         set_type_alignment_bytes(ir_type, align_all);
 498         set_type_size_bytes(ir_type, offset);
 499         set_type_state(ir_type, layout_fixed);
 500
 501         return ir_type;
 502 }
 503
 504 static ir_type *create_union_type(compound_type_t *type)
 505 {
 506         declaration_t *declaration = type->declaration;
 507         symbol_t      *symbol      = declaration->symbol;
 508         ident         *id;
 509         if(symbol != NULL) {
 510                 id = unique_ident(symbol->string);
 511         } else {
 512                 id = unique_ident("__anonymous_union");
 513         }
 514         ir_type  *ir_type = new_type_union(id);
 515
 516         type->type.firm_type = ir_type;
 517
 518         int align_all = 1;
 519         int size      = 0;
 520         declaration_t *entry = declaration->context.declarations;
 521         for( ; entry != NULL; entry = entry->next) {
 522                 if(entry->namespc != NAMESPACE_NORMAL)
 523                         continue;
 524
 525                 ident       *ident         = new_id_from_str(entry->symbol->string);
 526                 ir_type_ptr  entry_ir_type = get_ir_type(entry->type);
 527
 528                 int entry_size      = get_type_size_bytes(entry_ir_type);
 529                 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
 530
 531                 dbg_info  *const dbgi   = get_dbg_info(&entry->source_position);
 532                 ir_entity *const entity = new_d_entity(ir_type, ident, entry_ir_type, dbgi);
 533                 add_union_member(ir_type, entity);
 534                 set_entity_offset(entity, 0);
 535                 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
 536                 entry->v.entity         = entity;
 537
 538                 if(entry_size > size) {
 539                         size = entry_size;
 540                 }
 541                 if(entry_alignment > align_all) {
 542                         if(entry_alignment % align_all != 0) {
 543                                 panic("Uneven alignments not supported yet");
 544                         }
 545                         align_all = entry_alignment;
 546                 }
 547         }
 548
 549         set_type_alignment_bytes(ir_type, align_all);
 550         set_type_size_bytes(ir_type, size);
 551         set_type_state(ir_type, layout_fixed);
 552
 553         return ir_type;
 554 }
 555
 556 static ir_node *expression_to_firm(const expression_t *expression);
 557 static inline ir_mode *get_ir_mode(type_t *type);
 558
 559 static ir_type *create_enum_type(enum_type_t *const type)
 560 {
 561         type->type.firm_type = ir_type_int;
 562
 563         ir_mode *const mode    = get_ir_mode((type_t*) type);
 564         tarval  *const one     = get_mode_one(mode);
 565         tarval  *      tv_next = get_tarval_null(mode);
 566
 567         declaration_t *declaration = type->declaration->next;
 568         for (; declaration != NULL; declaration = declaration->next) {
 569                 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
 570                         break;
 571
 572                 declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY;
 573
 574                 expression_t *const init = declaration->init.enum_value;
 575                 if (init != NULL) {
 576                         ir_node *const cnst = expression_to_firm(init);
 577                         if (!is_Const(cnst)) {
 578                                 panic("couldn't fold constant");
 579                         }
 580                         tv_next = get_Const_tarval(cnst);
 581                 }
 582                 declaration->v.enum_val = tv_next;
 583                 tv_next = tarval_add(tv_next, one);
 584         }
 585
 586         return ir_type_int;
 587 }
 588
 589 static ir_type *get_ir_type(type_t *type)
 590 {
 591         assert(type != NULL);
 592
 593         type = skip_typeref(type);
 594
 595         if(type->base.firm_type != NULL) {
 596                 assert(type->base.firm_type != INVALID_TYPE);
 597                 return type->base.firm_type;
 598         }
 599
 600         ir_type *firm_type = NULL;
 601         switch(type->kind) {
 602         case TYPE_ATOMIC:
 603                 firm_type = create_atomic_type(&type->atomic);
 604                 break;
 605         case TYPE_FUNCTION:
 606                 firm_type = create_method_type(&type->function);
 607                 break;
 608         case TYPE_POINTER:
 609                 firm_type = create_pointer_type(&type->pointer);
 610                 break;
 611         case TYPE_ARRAY:
 612                 firm_type = create_array_type(&type->array);
 613                 break;
 614         case TYPE_COMPOUND_STRUCT:
 615                 firm_type = create_struct_type(&type->compound);
 616                 break;
 617         case TYPE_COMPOUND_UNION:
 618                 firm_type = create_union_type(&type->compound);
 619                 break;
 620         case TYPE_ENUM:
 621                 firm_type = create_enum_type(&type->enumt);
 622                 break;
 623         case TYPE_BUILTIN:
 624                 firm_type = get_ir_type(type->builtin.real_type);
 625                 break;
 626         case TYPE_TYPEOF:
 627         case TYPE_TYPEDEF:
 628         case TYPE_INVALID:
 629                 break;
 630         }
 631         if(firm_type == NULL)
 632                 panic("unknown type found");
 633
 634         type->base.firm_type = firm_type;
 635         return firm_type;
 636 }
 637
 638 static inline ir_mode *get_ir_mode(type_t *type)
 639 {
 640         ir_type *irtype = get_ir_type(type);
 641
 642         /* firm doesn't report a mode for arrays somehow... */
 643         if(is_Array_type(irtype)) {
 644                 return mode_P_data;
 645         }
 646
 647         ir_mode *mode = get_type_mode(irtype);
 648         assert(mode != NULL);
 649         return mode;
 650 }
 651
 652 static ident *predef_idents[rts_max];
 653
 654 /** Names of the runtime functions. */
 655 static const struct {
 656         int        id;           /**< the rts id */
 657         int        n_res;        /**< number of return values */
 658         const char *name;        /**< the name of the rts function */
 659         int        n_params;     /**< number of parameters */
 660         unsigned   flags;        /**< language flags */
 661 } rts_data[] = {
 662         { rts_debugbreak, 0, "__debugbreak", 0, _MS },
 663         { rts_abort,      0, "abort",        0, _C89 },
 664         { rts_abs,        1, "abs",          1, _C89 },
 665         { rts_labs,       1, "labs",         1, _C89 },
 666         { rts_llabs,      1, "llabs",        1, _C99 },
 667         { rts_imaxabs,    1, "imaxabs",      1, _C99 },
 668
 669         { rts_fabs,       1, "fabs",         1, _C89 },
 670         { rts_sqrt,       1, "sqrt",         1, _C89 },
 671         { rts_cbrt,       1, "cbrt",         1, _C99 },
 672         { rts_exp,        1, "exp",          1, _C89 },
 673         { rts_exp2,       1, "exp2",         1, _C89 },
 674         { rts_exp10,      1, "exp10",        1, _GNUC },
 675         { rts_log,        1, "log",          1, _C89 },
 676         { rts_log2,       1, "log2",         1, _C89 },
 677         { rts_log10,      1, "log10",        1, _C89 },
 678         { rts_pow,        1, "pow",          2, _C89 },
 679         { rts_sin,        1, "sin",          1, _C89 },
 680         { rts_cos,        1, "cos",          1, _C89 },
 681         { rts_tan,        1, "tan",          1, _C89 },
 682         { rts_asin,       1, "asin",         1, _C89 },
 683         { rts_acos,       1, "acos",         1, _C89 },
 684         { rts_atan,       1, "atan",         1, _C89 },
 685         { rts_sinh,       1, "sinh",         1, _C89 },
 686         { rts_cosh,       1, "cosh",         1, _C89 },
 687         { rts_tanh,       1, "tanh",         1, _C89 },
 688
 689         { rts_fabsf,      1, "fabsf",        1, _C99 },
 690         { rts_sqrtf,      1, "sqrtf",        1, _C99 },
 691         { rts_cbrtf,      1, "cbrtf",        1, _C99 },
 692         { rts_expf,       1, "expf",         1, _C99 },
 693         { rts_exp2f,      1, "exp2f",        1, _C99 },
 694         { rts_exp10f,     1, "exp10f",       1, _GNUC },
 695         { rts_logf,       1, "logf",         1, _C99 },
 696         { rts_log2f,      1, "log2f",        1, _C99 },
 697         { rts_log10f,     1, "log10f",       1, _C99 },
 698         { rts_powf,       1, "powf",         2, _C99 },
 699         { rts_sinf,       1, "sinf",         1, _C99 },
 700         { rts_cosf,       1, "cosf",         1, _C99 },
 701         { rts_tanf,       1, "tanf",         1, _C99 },
 702         { rts_asinf,      1, "asinf",        1, _C99 },
 703         { rts_acosf,      1, "acosf",        1, _C99 },
 704         { rts_atanf,      1, "atanf",        1, _C99 },
 705         { rts_sinhf,      1, "sinhf",        1, _C99 },
 706         { rts_coshf,      1, "coshf",        1, _C99 },
 707         { rts_tanhf,      1, "tanhf",        1, _C99 },
 708
 709         { rts_fabsl,      1, "fabsl",        1, _C99 },
 710         { rts_sqrtl,      1, "sqrtl",        1, _C99 },
 711         { rts_cbrtl,      1, "cbrtl",        1, _C99 },
 712         { rts_expl,       1, "expl",         1, _C99 },
 713         { rts_exp2l,      1, "exp2l",        1, _C99 },
 714         { rts_exp10l,     1, "exp10l",       1, _GNUC },
 715         { rts_logl,       1, "logl",         1, _C99 },
 716         { rts_log2l,      1, "log2l",        1, _C99 },
 717         { rts_log10l,     1, "log10l",       1, _C99 },
 718         { rts_powl,       1, "powl",         2, _C99 },
 719         { rts_sinl,       1, "sinl",         1, _C99 },
 720         { rts_cosl,       1, "cosl",         1, _C99 },
 721         { rts_tanl,       1, "tanl",         1, _C99 },
 722         { rts_asinl,      1, "asinl",        1, _C99 },
 723         { rts_acosl,      1, "acosl",        1, _C99 },
 724         { rts_atanl,      1, "atanl",        1, _C99 },
 725         { rts_sinhl,      1, "sinhl",        1, _C99 },
 726         { rts_coshl,      1, "coshl",        1, _C99 },
 727         { rts_tanhl,      1, "tanhl",        1, _C99 },
 728
 729         { rts_memcpy,     1, "memcpy",       3, _C89 },  /* HMM, man say its C99 */
 730         { rts_memset,     1, "memset",       3, _C89 },  /* HMM, man say its C99 */
 731         { rts_strcmp,     1, "strcmp",       2, _C89 },
 732         { rts_strncmp,    1, "strncmp",      3, _C89 }
 733 };
 734
 735 static ir_entity* get_function_entity(declaration_t *declaration)
 736 {
 737         if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
 738                 return declaration->v.entity;
 739         assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
 740
 741         symbol_t *symbol = declaration->symbol;
 742         ident    *id     = new_id_from_str(symbol->string);
 743
 744         ir_type  *global_type    = get_glob_type();
 745         ir_type  *ir_type_method = get_ir_type(declaration->type);
 746         assert(is_Method_type(ir_type_method));
 747
 748         dbg_info  *const dbgi   = get_dbg_info(&declaration->source_position);
 749         ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
 750         set_entity_ld_ident(entity, id);
 751         if(declaration->storage_class == STORAGE_CLASS_STATIC
 752                         || declaration->is_inline) {
 753                 set_entity_visibility(entity, visibility_local);
 754         } else if(declaration->init.statement != NULL) {
 755                 set_entity_visibility(entity, visibility_external_visible);
 756         } else {
 757                 set_entity_visibility(entity, visibility_external_allocated);
 758
 759                 /* We should check for file scope here, but as long as we compile C only
 760                    this is not needed. */
 761                 int n_params     = get_method_n_params(ir_type_method);
 762                 int n_res        = get_method_n_ress(ir_type_method);
 763                 ir_ident_ptr id  = get_entity_ident(entity);
 764                 int i;
 765
 766                 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
 767                         /* found abort(), store for later */
 768                         //abort_ent = ent;
 769                         //abort_tp  = ftype;
 770                 } else {
 771                         if (! firm_opt.freestanding) {
 772                                 /* check for a known runtime function */
 773                                 for (i = 0; i < rts_max; ++i) {
 774                                         /* ignore those rts functions not necessary needed for current mode */
 775                                         if ((c_mode & rts_data[i].flags) == 0)
 776                                                 continue;
 777                                         if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
 778                                                 id == predef_idents[rts_data[i].id])
 779                                                 rts_entities[rts_data[i].id] = entity;
 780                                 }
 781                         }
 782                 }
 783         }
 784         set_entity_allocation(entity, allocation_static);
 785
 786         declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
 787         declaration->v.entity         = entity;
 788
 789         return entity;
 790 }
 791
 792 static ir_node *const_to_firm(const const_expression_t *cnst)
 793 {
 794         dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
 795         ir_mode  *mode = get_ir_mode(cnst->expression.datatype);
 796
 797         char    buf[128];
 798         tarval *tv;
 799         size_t  len;
 800         if(mode_is_float(mode)) {
 801                 tv = new_tarval_from_double(cnst->v.float_value, mode);
 802         } else {
 803                 if(mode_is_signed(mode)) {
 804                         len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
 805                 } else {
 806                         len = snprintf(buf, sizeof(buf), "%llu",
 807                                        (unsigned long long) cnst->v.int_value);
 808                 }
 809                 tv = new_tarval_from_str(buf, len, mode);
 810         }
 811
 812         return new_d_Const(dbgi, mode, tv);
 813 }
 814
 815 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode, ir_entity *entity)
 816 {
 817         assert(entity != NULL);
 818         union symconst_symbol sym;
 819         sym.entity_p = entity;
 820         return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
 821 }
 822
 823 static ir_node *string_to_firm(const source_position_t *const src_pos,
 824                                const char *const id_prefix,
 825                                const char *const string)
 826 {
 827         ir_type *const global_type = get_glob_type();
 828         ir_type *const type        = new_type_array(unique_ident("strtype"), 1,
 829                                                     ir_type_const_char);
 830
 831         ident     *const id     = unique_ident(id_prefix);
 832         dbg_info  *const dbgi   = get_dbg_info(src_pos);
 833         ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
 834         set_entity_ld_ident(entity, id);
 835         set_entity_variability(entity, variability_constant);
 836         set_entity_allocation(entity, allocation_static);
 837
 838         ir_type *const elem_type = ir_type_const_char;
 839         ir_mode *const mode      = get_type_mode(elem_type);
 840
 841         const size_t slen = strlen(string) + 1;
 842
 843         set_array_lower_bound_int(type, 0, 0);
 844         set_array_upper_bound_int(type, 0, slen);
 845         set_type_size_bytes(type, slen);
 846         set_type_state(type, layout_fixed);
 847
 848         tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
 849         for(size_t i = 0; i < slen; ++i) {
 850                 tvs[i] = new_tarval_from_long(string[i], mode);
 851         }
 852
 853         set_array_entity_values(entity, tvs, slen);
 854         free(tvs);
 855
 856         return create_symconst(dbgi, mode_P_data, entity);
 857 }
 858
 859 static ir_node *string_literal_to_firm(
 860                 const string_literal_expression_t* literal)
 861 {
 862         return string_to_firm(&literal->expression.source_position, "Lstr",
 863                               literal->value);
 864 }
 865
 866 static ir_node *wide_string_literal_to_firm(
 867         const wide_string_literal_expression_t* const literal)
 868 {
 869         ir_type *const global_type = get_glob_type();
 870         ir_type *const elem_type   = ir_type_wchar_t;
 871         ir_type *const type        = new_type_array(unique_ident("strtype"), 1,
 872                                                     elem_type);
 873
 874         ident     *const id     = unique_ident("Lstr");
 875         dbg_info  *const dbgi   = get_dbg_info(&literal->expression.source_position);
 876         ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
 877         set_entity_ld_ident(entity, id);
 878         set_entity_variability(entity, variability_constant);
 879         set_entity_allocation(entity, allocation_static);
 880
 881         ir_mode *const mode      = get_type_mode(elem_type);
 882
 883         const wchar_rep_t *const string = literal->value.begin;
 884         const size_t             slen   = literal->value.size;
 885
 886         set_array_lower_bound_int(type, 0, 0);
 887         set_array_upper_bound_int(type, 0, slen);
 888         set_type_size_bytes(type, slen);
 889         set_type_state(type, layout_fixed);
 890
 891         tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
 892         for(size_t i = 0; i < slen; ++i) {
 893                 tvs[i] = new_tarval_from_long(string[i], mode);
 894         }
 895
 896         set_array_entity_values(entity, tvs, slen);
 897         free(tvs);
 898
 899         return create_symconst(dbgi, mode_P_data, entity);
 900 }
 901
 902 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
 903                               dbg_info *const dbgi)
 904 {
 905         if(is_compound_type(irtype) || is_Array_type(irtype)) {
 906                 return addr;
 907         }
 908
 909         ir_mode *const mode     = get_type_mode(irtype);
 910         ir_node *const memory   = get_store();
 911         ir_node *const load     = new_d_Load(dbgi, memory, addr, mode);
 912         ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
 913         ir_node *const load_res = new_d_Proj(dbgi, load, mode,   pn_Load_res);
 914         set_store(load_mem);
 915         return load_res;
 916 }
 917
 918 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
 919 {
 920         ir_mode *mode = get_irn_mode(node);
 921
 922         if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
 923                 return node;
 924         if(!mode_is_float(mode))
 925                 return node;
 926
 927         /* check if there is already a Conv */
 928         if (get_irn_op(node) == op_Conv) {
 929                 /* convert it into a strict Conv */
 930                 set_Conv_strict(node, 1);
 931                 return node;
 932         }
 933
 934         /* otherwise create a new one */
 935         return new_d_strictConv(dbgi, node, mode);
 936 }
 937
 938 static ir_node *get_global_var_address(dbg_info *const dbgi,
 939                                        const declaration_t *const decl)
 940 {
 941         assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
 942
 943         ir_entity *const entity = decl->v.entity;
 944         switch ((storage_class_tag_t)decl->storage_class) {
 945                 case STORAGE_CLASS_THREAD:
 946                 case STORAGE_CLASS_THREAD_EXTERN:
 947                 case STORAGE_CLASS_THREAD_STATIC: {
 948                         ir_node *const no_mem = new_NoMem();
 949                         ir_node *const tls    = get_irg_tls(current_ir_graph);
 950                         return new_d_simpleSel(dbgi, no_mem, tls, entity);
 951                 }
 952
 953                 default:
 954                         return create_symconst(dbgi, mode_P_data, entity);
 955         }
 956 }
 957
 958 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
 959 {
 960         dbg_info      *dbgi        = get_dbg_info(&ref->expression.source_position);
 961         declaration_t *declaration = ref->declaration;
 962         type_t        *type        = skip_typeref(declaration->type);
 963
 964         switch((declaration_type_t) declaration->declaration_type) {
 965         case DECLARATION_TYPE_UNKNOWN:
 966                 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
 967                         break;
 968                 }
 969                 get_ir_type(type);
 970                 /* FALLTHROUGH */
 971
 972         case DECLARATION_TYPE_ENUM_ENTRY: {
 973                 ir_mode *const mode = get_ir_mode(type);
 974                 return new_Const(mode, declaration->v.enum_val);
 975         }
 976
 977         case DECLARATION_TYPE_LOCAL_VARIABLE: {
 978                 ir_mode *const mode = get_ir_mode(type);
 979                 return get_value(declaration->v.value_number, mode);
 980         }
 981         case DECLARATION_TYPE_FUNCTION: {
 982                 ir_mode *const mode = get_ir_mode(type);
 983                 return create_symconst(dbgi, mode, declaration->v.entity);
 984         }
 985         case DECLARATION_TYPE_GLOBAL_VARIABLE: {
 986                 ir_node *const addr   = get_global_var_address(dbgi, declaration);
 987                 ir_type *const irtype = get_entity_type(declaration->v.entity);
 988                 return deref_address(irtype, addr, dbgi);
 989         }
 990
 991         case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
 992                 ir_entity *entity = declaration->v.entity;
 993                 ir_node   *frame  = get_irg_frame(current_ir_graph);
 994                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
 995                 ir_type   *irtype = get_entity_type(entity);
 996                 return deref_address(irtype, sel, dbgi);
 997         }
 998
 999         case DECLARATION_TYPE_COMPOUND_MEMBER:
1000         case DECLARATION_TYPE_LABEL_BLOCK:
1001                 panic("not implemented reference type");
1002         }
1003
1004         panic("reference to declaration with unknown type found");
1005 }
1006
1007 static ir_node *reference_addr(const reference_expression_t *ref)
1008 {
1009         dbg_info      *dbgi        = get_dbg_info(&ref->expression.source_position);
1010         declaration_t *declaration = ref->declaration;
1011
1012         switch((declaration_type_t) declaration->declaration_type) {
1013         case DECLARATION_TYPE_UNKNOWN:
1014                 break;
1015         case DECLARATION_TYPE_LOCAL_VARIABLE:
1016                 panic("local variable without entity has no address");
1017         case DECLARATION_TYPE_FUNCTION: {
1018                 type_t *const  type = skip_typeref(ref->expression.datatype);
1019                 ir_mode *const mode = get_ir_mode(type);
1020                 return create_symconst(dbgi, mode, declaration->v.entity);
1021         }
1022         case DECLARATION_TYPE_GLOBAL_VARIABLE: {
1023                 ir_node *const addr = get_global_var_address(dbgi, declaration);
1024                 return addr;
1025         }
1026         case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
1027                 ir_entity *entity = declaration->v.entity;
1028                 ir_node   *frame  = get_irg_frame(current_ir_graph);
1029                 ir_node   *sel    = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1030
1031                 return sel;
1032         }
1033
1034         case DECLARATION_TYPE_ENUM_ENTRY:
1035                 panic("trying to reference enum entry");
1036
1037         case DECLARATION_TYPE_COMPOUND_MEMBER:
1038         case DECLARATION_TYPE_LABEL_BLOCK:
1039                 panic("not implemented reference type");
1040         }
1041
1042         panic("reference to declaration with unknown type found");
1043 }
1044
1045 static ir_node *process_builtin_call(const call_expression_t *call)
1046 {
1047         dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
1048
1049         assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1050         builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1051
1052         type_t *type = skip_typeref(builtin->expression.datatype);
1053         assert(is_type_pointer(type));
1054
1055         type_t   *function_type = skip_typeref(type->pointer.points_to);
1056         symbol_t *symbol        = builtin->symbol;
1057
1058         switch(symbol->ID) {
1059         case T___builtin_alloca: {
1060                 if(call->arguments == NULL || call->arguments->next != NULL) {
1061                         panic("invalid number of parameters on __builtin_alloca");
1062                 }
1063                 expression_t *argument = call->arguments->expression;
1064                 ir_node      *size     = expression_to_firm(argument);
1065
1066                 ir_node *store  = get_store();
1067                 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1068                                               stack_alloc);
1069                 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1070                 set_store(proj_m);
1071                 ir_node *res    = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1072
1073                 return res;
1074         }
1075         case T___builtin_nan:
1076         case T___builtin_nanf:
1077         case T___builtin_nand: {
1078                 /* Ignore string for now... */
1079                 assert(is_type_function(function_type));
1080                 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1081                 tarval  *tv   = get_mode_NAN(mode);
1082                 ir_node *res  = new_d_Const(dbgi, mode, tv);
1083                 return res;
1084         }
1085         case T___builtin_va_end:
1086                 return NULL;
1087         default:
1088                 panic("Unsupported builtin found\n");
1089         }
1090 }
1091
1092 static ir_node *call_expression_to_firm(const call_expression_t *call)
1093 {
1094         assert(get_cur_block() != NULL);
1095
1096         expression_t *function = call->function;
1097         if(function->kind == EXPR_BUILTIN_SYMBOL) {
1098                 return process_builtin_call(call);
1099         }
1100         ir_node *callee = expression_to_firm(function);
1101
1102         type_t *type = skip_typeref(function->base.datatype);
1103         assert(is_type_pointer(type));
1104         pointer_type_t *pointer_type = &type->pointer;
1105         type_t         *points_to    = skip_typeref(pointer_type->points_to);
1106         assert(is_type_function(points_to));
1107         function_type_t *function_type = &points_to->function;
1108
1109         int              n_parameters = 0;
1110         call_argument_t *argument     = call->arguments;
1111         for( ; argument != NULL; argument = argument->next) {
1112                 ++n_parameters;
1113         }
1114
1115         dbg_info *dbgi  = get_dbg_info(&call->expression.source_position);
1116
1117         ir_type *ir_method_type  = get_ir_type((type_t*) function_type);
1118         ir_type *new_method_type = NULL;
1119         if(function_type->variadic || function_type->unspecified_parameters) {
1120                 /* we need to construct a new method type matching the call
1121                  * arguments... */
1122                 int n_res       = get_method_n_ress(ir_method_type);
1123                 new_method_type = new_type_method(unique_ident("calltype"),
1124                                                   n_parameters, n_res);
1125                 set_method_calling_convention(new_method_type,
1126                                get_method_calling_convention(ir_method_type));
1127                 set_method_additional_properties(new_method_type,
1128                                get_method_additional_properties(ir_method_type));
1129
1130                 for(int i = 0; i < n_res; ++i) {
1131                         set_method_res_type(new_method_type, i,
1132                                             get_method_res_type(ir_method_type, i));
1133                 }
1134         }
1135         ir_node *in[n_parameters];
1136
1137         argument = call->arguments;
1138         int n = 0;
1139         for( ; argument != NULL; argument = argument->next) {
1140                 expression_t *expression = argument->expression;
1141                 ir_node      *arg_node   = expression_to_firm(expression);
1142
1143                 arg_node = do_strict_conv(dbgi, arg_node);
1144
1145                 in[n] = arg_node;
1146                 if(new_method_type != NULL) {
1147                         ir_type *irtype = get_ir_type(expression->base.datatype);
1148                         set_method_param_type(new_method_type, n, irtype);
1149                 }
1150
1151                 n++;
1152         }
1153         assert(n == n_parameters);
1154
1155         if(new_method_type != NULL)
1156                 ir_method_type = new_method_type;
1157
1158         ir_node  *store = get_store();
1159         ir_node  *node  = new_d_Call(dbgi, store, callee, n_parameters, in,
1160                                      ir_method_type);
1161         ir_node  *mem   = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1162         set_store(mem);
1163
1164         type_t  *return_type = skip_typeref(function_type->return_type);
1165         ir_node *result      = NULL;
1166
1167         if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1168                 ir_mode *mode;
1169                 if(is_type_scalar(return_type)) {
1170                         mode = get_ir_mode(return_type);
1171                 } else {
1172                         mode = mode_P_data;
1173                 }
1174                 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1175                 result           = new_d_Proj(dbgi, resproj, mode, 0);
1176         }
1177
1178         return result;
1179 }
1180
1181 static void statement_to_firm(statement_t *statement);
1182 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1183
1184 static ir_node *expression_to_addr(const expression_t *expression);
1185 static void create_condition_evaluation(const expression_t *expression,
1186                                         ir_node *true_block,
1187                                         ir_node *false_block);
1188
1189 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1190                          ir_node *value)
1191 {
1192         value = do_strict_conv(dbgi, value);
1193
1194         ir_node  *memory = get_store();
1195
1196         if(is_type_scalar(type)) {
1197                 ir_node  *store     = new_d_Store(dbgi, memory, addr, value);
1198                 ir_node  *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1199                 set_store(store_mem);
1200         } else {
1201                 ir_type *irtype    = get_ir_type(type);
1202                 ir_node *copyb     = new_d_CopyB(dbgi, memory, addr, value, irtype);
1203                 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1204                 set_store(copyb_mem);
1205         }
1206 }
1207
1208 static void set_value_for_expression(const expression_t *expression,
1209                                      ir_node *value)
1210 {
1211         dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1212         value          = do_strict_conv(dbgi, value);
1213
1214         if(expression->kind == EXPR_REFERENCE) {
1215                 const reference_expression_t *ref = &expression->reference;
1216
1217                 declaration_t *declaration = ref->declaration;
1218                 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
1219                 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1220                         set_value(declaration->v.value_number, value);
1221                         return;
1222                 }
1223         }
1224
1225         ir_node *addr = expression_to_addr(expression);
1226         type_t  *type = skip_typeref(expression->base.datatype);
1227         assign_value(dbgi, addr, type, value);
1228 }
1229
1230 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1231 {
1232         ir_mode *value_mode = get_irn_mode(value);
1233
1234         if (value_mode == dest_mode || is_Bad(value))
1235                 return value;
1236
1237         if(dest_mode == mode_b) {
1238                 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1239                 ir_node *cmp  = new_d_Cmp(dbgi, value, zero);
1240                 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1241                 return proj;
1242         }
1243
1244         return new_d_Conv(dbgi, value, dest_mode);
1245 }
1246
1247 static ir_node *create_incdec(const unary_expression_t *expression)
1248 {
1249         dbg_info     *dbgi  = get_dbg_info(&expression->expression.source_position);
1250         type_t       *type  = skip_typeref(expression->expression.datatype);
1251         ir_mode      *mode  = get_ir_mode(type);
1252         expression_t *value = expression->value;
1253
1254         ir_node *value_node = expression_to_firm(value);
1255
1256         ir_node *offset;
1257         if(is_type_pointer(type)) {
1258                 pointer_type_t *pointer_type = &type->pointer;
1259                 unsigned        elem_size    = get_type_size(pointer_type->points_to);
1260                 offset = new_Const_long(mode_int, elem_size);
1261         } else {
1262                 assert(is_type_arithmetic(type));
1263                 offset = new_Const(mode, get_mode_one(mode));
1264         }
1265
1266         switch(expression->expression.kind) {
1267         case EXPR_UNARY_POSTFIX_INCREMENT: {
1268                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1269                 set_value_for_expression(value, new_value);
1270                 return value_node;
1271         }
1272         case EXPR_UNARY_POSTFIX_DECREMENT: {
1273                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1274                 set_value_for_expression(value, new_value);
1275                 return value_node;
1276         }
1277         case EXPR_UNARY_PREFIX_INCREMENT: {
1278                 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1279                 set_value_for_expression(value, new_value);
1280                 return new_value;
1281         }
1282         case EXPR_UNARY_PREFIX_DECREMENT: {
1283                 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1284                 set_value_for_expression(value, new_value);
1285                 return new_value;
1286         }
1287         default:
1288                 panic("no incdec expr in create_incdec");
1289                 return NULL;
1290         }
1291 }
1292
1293 static bool is_local_variable(expression_t *expression)
1294 {
1295         if (expression->kind != EXPR_REFERENCE)
1296                 return false;
1297         reference_expression_t *ref_expr    = &expression->reference;
1298         declaration_t          *declaration = ref_expr->declaration;
1299         return declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE;
1300 }
1301
1302 static pn_Cmp get_pnc(const expression_kind_t kind)
1303 {
1304         switch(kind) {
1305         case EXPR_BINARY_EQUAL:         return pn_Cmp_Eq;
1306         case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1307         case EXPR_BINARY_NOTEQUAL:      return pn_Cmp_Ne;
1308         case EXPR_BINARY_ISLESS:
1309         case EXPR_BINARY_LESS:          return pn_Cmp_Lt;
1310         case EXPR_BINARY_ISLESSEQUAL:
1311         case EXPR_BINARY_LESSEQUAL:     return pn_Cmp_Le;
1312         case EXPR_BINARY_ISGREATER:
1313         case EXPR_BINARY_GREATER:       return pn_Cmp_Gt;
1314         case EXPR_BINARY_ISGREATEREQUAL:
1315         case EXPR_BINARY_GREATEREQUAL:  return pn_Cmp_Ge;
1316         case EXPR_BINARY_ISUNORDERED:   return pn_Cmp_Uo;
1317
1318         default:
1319                 break;
1320         }
1321         panic("trying to get pn_Cmp from non-comparison binexpr type");
1322 }
1323
1324 /**
1325  * Handle the assume optimizer hint: check if a Confirm
1326  * node can be created.
1327  *
1328  * @param dbi    debug info
1329  * @param expr   the IL assume expression
1330  *
1331  * we support here only some simple cases:
1332  *  - var rel const
1333  *  - const rel val
1334  *  - var rel var
1335  */
1336 static ir_node *handle_assume_compare(dbg_info *dbi, const binary_expression_t *expression)
1337 {
1338         expression_t  *op1 = expression->left;
1339         expression_t  *op2 = expression->right;
1340         declaration_t *var2, *var = NULL;
1341         ir_node       *res = NULL;
1342         pn_Cmp         cmp_val;
1343
1344         cmp_val = get_pnc(expression->expression.kind);
1345
1346         if (is_local_variable(op1) && is_local_variable(op2)) {
1347         var  = op1->reference.declaration;
1348             var2 = op2->reference.declaration;
1349
1350                 type_t  *const type = skip_typeref(var->type);
1351                 ir_mode *const mode = get_ir_mode(type);
1352
1353                 ir_node *const irn1 = get_value(var->v.value_number, mode);
1354                 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1355
1356                 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1357                 set_value(var2->v.value_number, res);
1358
1359                 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1360                 set_value(var->v.value_number, res);
1361
1362                 return res;
1363         }
1364
1365         expression_t *con;
1366         if (is_local_variable(op1) && is_constant_expression(op2)) {
1367                 var = op1->reference.declaration;
1368                 con = op2;
1369         } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1370                 cmp_val = get_inversed_pnc(cmp_val);
1371                 var = op2->reference.declaration;
1372                 con = op1;
1373         }
1374
1375         if (var != NULL) {
1376                 type_t  *const type = skip_typeref(var->type);
1377                 ir_mode *const mode = get_ir_mode(type);
1378
1379                 res = get_value(var->v.value_number, mode);
1380                 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1381                 set_value(var->v.value_number, res);
1382         }
1383         return res;
1384 }
1385
1386 /**
1387  * Handle the assume optimizer hint.
1388  *
1389  * @param dbi    debug info
1390  * @param expr   the IL assume expression
1391  */
1392 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1393         switch(expression->kind) {
1394         case EXPR_BINARY_EQUAL:
1395         case EXPR_BINARY_NOTEQUAL:
1396         case EXPR_BINARY_LESS:
1397         case EXPR_BINARY_LESSEQUAL:
1398         case EXPR_BINARY_GREATER:
1399         case EXPR_BINARY_GREATEREQUAL:
1400                 return handle_assume_compare(dbi, &expression->binary);
1401         default:
1402                 return NULL;
1403         }
1404 }
1405
1406 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1407 {
1408         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1409         type_t   *type = skip_typeref(expression->expression.datatype);
1410
1411         if(expression->expression.kind == EXPR_UNARY_TAKE_ADDRESS)
1412                 return expression_to_addr(expression->value);
1413
1414         const expression_t *value = expression->value;
1415
1416         switch(expression->expression.kind) {
1417         case EXPR_UNARY_NEGATE: {
1418                 ir_node *value_node = expression_to_firm(value);
1419                 ir_mode *mode = get_ir_mode(type);
1420                 return new_d_Minus(dbgi, value_node, mode);
1421         }
1422         case EXPR_UNARY_PLUS:
1423                 return expression_to_firm(value);
1424         case EXPR_UNARY_BITWISE_NEGATE: {
1425                 ir_node *value_node = expression_to_firm(value);
1426                 ir_mode *mode = get_ir_mode(type);
1427                 return new_d_Not(dbgi, value_node, mode);
1428         }
1429         case EXPR_UNARY_NOT: {
1430                 ir_node *value_node = expression_to_firm(value);
1431                 ir_mode *mode = get_ir_mode(type);
1432                 if(get_irn_mode(value_node) != mode_b) {
1433                         value_node = create_conv(dbgi, value_node, mode_b);
1434                 }
1435                 value_node = new_d_Not(dbgi, value_node, mode_b);
1436                 if(mode != mode_b) {
1437                         value_node = create_conv(dbgi, value_node, mode);
1438                 }
1439                 return value_node;
1440         }
1441         case EXPR_UNARY_DEREFERENCE: {
1442                 ir_node *value_node = expression_to_firm(value);
1443                 type_t  *value_type = skip_typeref(value->base.datatype);
1444                 ir_type *irtype     = get_ir_type(value_type);
1445                 assert(is_Pointer_type(irtype));
1446                 ir_type *points_to  = get_pointer_points_to_type(irtype);
1447                 return deref_address(points_to, value_node, dbgi);
1448         }
1449         case EXPR_UNARY_POSTFIX_INCREMENT:
1450         case EXPR_UNARY_POSTFIX_DECREMENT:
1451         case EXPR_UNARY_PREFIX_INCREMENT:
1452         case EXPR_UNARY_PREFIX_DECREMENT:
1453                 return create_incdec(expression);
1454         case EXPR_UNARY_CAST: {
1455                 ir_node *value_node = expression_to_firm(value);
1456                 ir_mode *mode = get_ir_mode(type);
1457                 ir_node *node = create_conv(dbgi, value_node, mode);
1458                 node = do_strict_conv(dbgi, node);
1459                 return node;
1460         }
1461         case EXPR_UNARY_CAST_IMPLICIT: {
1462                 ir_node *value_node = expression_to_firm(value);
1463                 ir_mode *mode = get_ir_mode(type);
1464                 return create_conv(dbgi, value_node, mode);
1465         }
1466         case EXPR_UNARY_ASSUME:
1467                 if(firm_opt.confirm)
1468                         return handle_assume(dbgi, value);
1469                 else
1470                         return NULL;
1471
1472         default:
1473                 break;
1474         }
1475         panic("invalid UNEXPR type found");
1476 }
1477
1478 static ir_node *create_lazy_op(const binary_expression_t *expression)
1479 {
1480         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1481         type_t   *type = expression->expression.datatype;
1482         ir_mode  *mode = get_ir_mode(type);
1483
1484         if(is_constant_expression(expression->left)) {
1485                 long val = fold_constant(expression->left);
1486                 expression_kind_t ekind = expression->expression.kind;
1487                 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1488                                 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1489                         return expression_to_firm(expression->right);
1490                 } else {
1491                         assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1492                                         || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1493                         return new_Const(mode, get_mode_one(mode));
1494                 }
1495         }
1496
1497         ir_node *cur_block = get_cur_block();
1498
1499         ir_node *one_block = new_immBlock();
1500         ir_node *one       = new_Const(mode, get_mode_one(mode));
1501         ir_node *jmp_one   = new_d_Jmp(dbgi);
1502
1503         ir_node *zero_block = new_immBlock();
1504         ir_node *zero       = new_Const(mode, get_mode_null(mode));
1505         ir_node *jmp_zero   = new_d_Jmp(dbgi);
1506
1507         set_cur_block(cur_block);
1508         create_condition_evaluation((const expression_t*) expression,
1509                                     one_block, zero_block);
1510         mature_immBlock(one_block);
1511         mature_immBlock(zero_block);
1512
1513         ir_node *common_block = new_immBlock();
1514         add_immBlock_pred(common_block, jmp_one);
1515         add_immBlock_pred(common_block, jmp_zero);
1516         mature_immBlock(common_block);
1517
1518         ir_node *in[2] = { one, zero };
1519         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
1520
1521         return val;
1522 }
1523
1524 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1525                                             ir_node *right, ir_mode *mode);
1526
1527 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1528                                         create_arithmetic_func func)
1529 {
1530         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1531         ir_node  *left  = expression_to_firm(expression->left);
1532         ir_node  *right = expression_to_firm(expression->right);
1533         type_t   *type  = expression->right->base.datatype;
1534         /* be careful with the modes, because in arithmetic assign nodes only
1535          * the right operand has the mode of the arithmetic already */
1536         ir_mode  *mode  = get_ir_mode(type);
1537         left            = create_conv(dbgi, left, mode);
1538         ir_node  *res   = func(dbgi, left, right, mode);
1539
1540         return res;
1541 }
1542
1543 static ir_node *pointer_arithmetic(ir_node  *const pointer,
1544                                    ir_node  *      integer,
1545                                    type_t   *const type,
1546                                    dbg_info *const dbgi,
1547                                    const create_arithmetic_func func)
1548 {
1549         pointer_type_t *const pointer_type = &type->pointer;
1550         type_t         *const points_to    = pointer_type->points_to;
1551         const unsigned        elem_size    = get_type_size(points_to);
1552
1553         assert(elem_size >= 1);
1554         if (elem_size > 1) {
1555                 integer             = create_conv(dbgi, integer, mode_int);
1556                 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1557                 ir_node *const mul  = new_d_Mul(dbgi, integer, cnst, mode_int);
1558                 integer = mul;
1559         }
1560
1561         ir_mode *const mode = get_ir_mode(type);
1562         return func(dbgi, pointer, integer, mode);
1563 }
1564
1565 static ir_node *create_arithmetic_assign_binop(
1566                 const binary_expression_t *expression, create_arithmetic_func func)
1567 {
1568         dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1569         type_t   *const type = skip_typeref(expression->expression.datatype);
1570         ir_node  *value;
1571
1572         if (is_type_pointer(type)) {
1573                 ir_node *const pointer = expression_to_firm(expression->left);
1574                 ir_node *      integer = expression_to_firm(expression->right);
1575                 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1576         } else {
1577                 value = create_arithmetic_binop(expression, func);
1578         }
1579
1580         ir_mode *const mode = get_ir_mode(type);
1581         value = create_conv(dbgi, value, mode);
1582         set_value_for_expression(expression->left, value);
1583
1584         return value;
1585 }
1586
1587 static ir_node *create_add(const binary_expression_t *expression)
1588 {
1589         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1590         ir_node  *left  = expression_to_firm(expression->left);
1591         ir_node  *right = expression_to_firm(expression->right);
1592         type_t   *type  = expression->expression.datatype;
1593
1594         expression_t *expr_left  = expression->left;
1595         expression_t *expr_right = expression->right;
1596         type_t       *type_left  = skip_typeref(expr_left->base.datatype);
1597         type_t       *type_right = skip_typeref(expr_right->base.datatype);
1598
1599         if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1600                 ir_mode *const mode = get_ir_mode(type);
1601                 return new_d_Add(dbgi, left, right, mode);
1602         }
1603
1604         if (is_type_pointer(type_left)) {
1605                 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1606         } else {
1607                 assert(is_type_pointer(type_right));
1608                 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1609         }
1610 }
1611
1612 static ir_node *create_sub(const binary_expression_t *expression)
1613 {
1614         dbg_info *const dbgi  = get_dbg_info(&expression->expression.source_position);
1615         expression_t *const expr_left  = expression->left;
1616         expression_t *const expr_right = expression->right;
1617         ir_node      *const left       = expression_to_firm(expr_left);
1618         ir_node      *const right      = expression_to_firm(expr_right);
1619         type_t       *const type       = expression->expression.datatype;
1620         type_t       *const type_left  = skip_typeref(expr_left->base.datatype);
1621         type_t       *const type_right = skip_typeref(expr_right->base.datatype);
1622
1623         if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1624                 ir_mode *const mode = get_ir_mode(type);
1625                 return new_d_Sub(dbgi, left, right, mode);
1626         } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1627                 const pointer_type_t *const ptr_type = &type_left->pointer;
1628                 const unsigned elem_size             = get_type_size(ptr_type->points_to);
1629                 ir_mode *const mode   = get_ir_mode(type);
1630                 ir_node *const sub    = new_d_Sub(dbgi, left, right, mode);
1631                 ir_node *const cnst   = new_Const_long(mode_int, (long)elem_size);
1632                 ir_node *const no_mem = new_NoMem();
1633                 ir_node *const div    = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1634                                                   op_pin_state_floats);
1635                 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1636         }
1637
1638         assert(is_type_pointer(type_left));
1639         return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1640 }
1641
1642 static ir_node *create_shift(const binary_expression_t *expression)
1643 {
1644         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1645         ir_node  *left  = expression_to_firm(expression->left);
1646         ir_node  *right = expression_to_firm(expression->right);
1647         type_t   *type  = expression->expression.datatype;
1648         ir_mode  *mode  = get_ir_mode(type);
1649
1650         /* firm always wants the shift count to be unsigned */
1651         right = create_conv(dbgi, right, mode_uint);
1652
1653         ir_node *res;
1654
1655         switch(expression->expression.kind) {
1656         case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1657         case EXPR_BINARY_SHIFTLEFT:
1658                 res = new_d_Shl(dbgi, left, right, mode);
1659                 break;
1660         case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1661         case EXPR_BINARY_SHIFTRIGHT: {
1662                  expression_t *expr_left = expression->left;
1663                  type_t       *type_left = skip_typeref(expr_left->base.datatype);
1664
1665                  if(is_type_signed(type_left)) {
1666                         res = new_d_Shrs(dbgi, left, right, mode);
1667                  } else {
1668                          res = new_d_Shr(dbgi, left, right, mode);
1669                  }
1670                  break;
1671         }
1672         default:
1673                 panic("create shift op called for non-shift op");
1674         }
1675
1676         return res;
1677 }
1678
1679
1680 static ir_node *create_divmod(const binary_expression_t *expression)
1681 {
1682         dbg_info *dbgi  = get_dbg_info(&expression->expression.source_position);
1683         ir_node  *left  = expression_to_firm(expression->left);
1684         ir_node  *right = expression_to_firm(expression->right);
1685         ir_node  *pin   = new_Pin(new_NoMem());
1686         /* be careful with the modes, because in arithmetic assign nodes only
1687          * the right operand has the mode of the arithmetic already */
1688         type_t   *type  = expression->right->base.datatype;
1689         ir_mode  *mode  = get_ir_mode(type);
1690         left            = create_conv(dbgi, left, mode);
1691         ir_node  *op;
1692         ir_node  *res;
1693
1694         switch (expression->expression.kind) {
1695         case EXPR_BINARY_DIV:
1696         case EXPR_BINARY_DIV_ASSIGN:
1697                 if(mode_is_float(mode)) {
1698                         op  = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1699                         res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1700                 } else {
1701                         op  = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1702                         res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1703                 }
1704                 break;
1705
1706         case EXPR_BINARY_MOD:
1707         case EXPR_BINARY_MOD_ASSIGN:
1708                 assert(!mode_is_float(mode));
1709                 op  = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1710                 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1711                 break;
1712
1713         default: panic("unexpected binary expression type in create_divmod()");
1714         }
1715
1716         return res;
1717 }
1718
1719 static ir_node *create_arithmetic_assign_divmod(
1720                 const binary_expression_t *expression)
1721 {
1722         ir_node  *      value = create_divmod(expression);
1723         dbg_info *const dbgi  = get_dbg_info(&expression->expression.source_position);
1724         type_t   *const type  = expression->expression.datatype;
1725         ir_mode  *const mode  = get_ir_mode(type);
1726
1727         assert(type->kind != TYPE_POINTER);
1728
1729         value = create_conv(dbgi, value, mode);
1730         set_value_for_expression(expression->left, value);
1731
1732         return value;
1733 }
1734
1735 static ir_node *create_arithmetic_assign_shift(
1736                 const binary_expression_t *expression)
1737 {
1738         ir_node  *      value = create_shift(expression);
1739         dbg_info *const dbgi  = get_dbg_info(&expression->expression.source_position);
1740         type_t   *const type  = expression->expression.datatype;
1741         ir_mode  *const mode  = get_ir_mode(type);
1742
1743         value = create_conv(dbgi, value, mode);
1744         set_value_for_expression(expression->left, value);
1745
1746         return value;
1747 }
1748
1749 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1750 {
1751         expression_kind_t kind = expression->expression.kind;
1752
1753         switch(kind) {
1754         case EXPR_BINARY_EQUAL:
1755         case EXPR_BINARY_NOTEQUAL:
1756         case EXPR_BINARY_LESS:
1757         case EXPR_BINARY_LESSEQUAL:
1758         case EXPR_BINARY_GREATER:
1759         case EXPR_BINARY_GREATEREQUAL:
1760         case EXPR_BINARY_ISGREATER:
1761         case EXPR_BINARY_ISGREATEREQUAL:
1762         case EXPR_BINARY_ISLESS:
1763         case EXPR_BINARY_ISLESSEQUAL:
1764         case EXPR_BINARY_ISLESSGREATER:
1765         case EXPR_BINARY_ISUNORDERED: {
1766                 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1767                 ir_node *left  = expression_to_firm(expression->left);
1768                 ir_node *right = expression_to_firm(expression->right);
1769                 ir_node *cmp   = new_d_Cmp(dbgi, left, right);
1770                 long     pnc   = get_pnc(kind);
1771                 ir_node *proj  = new_d_Proj(dbgi, cmp, mode_b, pnc);
1772                 return proj;
1773         }
1774         case EXPR_BINARY_ASSIGN: {
1775                 ir_node *right = expression_to_firm(expression->right);
1776                 set_value_for_expression(expression->left, right);
1777
1778                 return right;
1779         }
1780         case EXPR_BINARY_ADD:
1781                 return create_add(expression);
1782         case EXPR_BINARY_SUB:
1783                 return create_sub(expression);
1784         case EXPR_BINARY_MUL:
1785                 return create_arithmetic_binop(expression, new_d_Mul);
1786         case EXPR_BINARY_BITWISE_AND:
1787                 return create_arithmetic_binop(expression, new_d_And);
1788         case EXPR_BINARY_BITWISE_OR:
1789                 return create_arithmetic_binop(expression, new_d_Or);
1790         case EXPR_BINARY_BITWISE_XOR:
1791                 return create_arithmetic_binop(expression, new_d_Eor);
1792         case EXPR_BINARY_SHIFTLEFT:
1793         case EXPR_BINARY_SHIFTRIGHT:
1794                 return create_shift(expression);
1795         case EXPR_BINARY_DIV:
1796         case EXPR_BINARY_MOD:
1797                 return create_divmod(expression);
1798         case EXPR_BINARY_LOGICAL_AND:
1799         case EXPR_BINARY_LOGICAL_OR:
1800                 return create_lazy_op(expression);
1801         case EXPR_BINARY_COMMA:
1802                 expression_to_firm(expression->left);
1803                 return expression_to_firm(expression->right);
1804         case EXPR_BINARY_ADD_ASSIGN:
1805                 return create_arithmetic_assign_binop(expression, new_d_Add);
1806         case EXPR_BINARY_SUB_ASSIGN:
1807                 return create_arithmetic_assign_binop(expression, new_d_Sub);
1808         case EXPR_BINARY_MUL_ASSIGN:
1809                 return create_arithmetic_assign_binop(expression, new_d_Mul);
1810         case EXPR_BINARY_DIV_ASSIGN:
1811                 return create_arithmetic_assign_divmod(expression);
1812         case EXPR_BINARY_BITWISE_AND_ASSIGN:
1813                 return create_arithmetic_assign_binop(expression, new_d_And);
1814         case EXPR_BINARY_BITWISE_OR_ASSIGN:
1815                 return create_arithmetic_assign_binop(expression, new_d_Or);
1816         case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1817                 return create_arithmetic_assign_binop(expression, new_d_Eor);
1818         case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1819         case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1820                 return create_arithmetic_assign_shift(expression);
1821         case EXPR_BINARY_BUILTIN_EXPECT:
1822                 return expression_to_firm(expression->left);
1823         default:
1824                 panic("TODO binexpr type");
1825         }
1826 }
1827
1828 static ir_node *array_access_addr(const array_access_expression_t *expression)
1829 {
1830         dbg_info *dbgi      = get_dbg_info(&expression->expression.source_position);
1831         ir_node  *base_addr = expression_to_firm(expression->array_ref);
1832         ir_node  *offset    = expression_to_firm(expression->index);
1833         offset              = create_conv(dbgi, offset, mode_uint);
1834
1835         type_t *ref_type = skip_typeref(expression->array_ref->base.datatype);
1836         assert(is_type_pointer(ref_type));
1837         pointer_type_t *pointer_type = &ref_type->pointer;
1838
1839         unsigned elem_size       = get_type_size(pointer_type->points_to);
1840         ir_node *elem_size_const = new_Const_long(mode_uint, elem_size);
1841         ir_node *real_offset     = new_d_Mul(dbgi, offset, elem_size_const,
1842                                              mode_uint);
1843         ir_node *result          = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
1844
1845         return result;
1846 }
1847
1848 static ir_node *array_access_to_firm(
1849                 const array_access_expression_t *expression)
1850 {
1851         dbg_info *dbgi   = get_dbg_info(&expression->expression.source_position);
1852         ir_node  *addr   = array_access_addr(expression);
1853         type_t   *type   = revert_automatic_type_conversion(
1854                         (const expression_t*) expression);
1855         type             = skip_typeref(type);
1856         ir_type  *irtype = get_ir_type(type);
1857
1858         return deref_address(irtype, addr, dbgi);
1859 }
1860
1861 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1862 {
1863         type_t *type = expression->type;
1864         if(type == NULL) {
1865                 type = expression->size_expression->base.datatype;
1866                 assert(type != NULL);
1867         }
1868
1869         ir_mode *const mode = get_ir_mode(expression->expression.datatype);
1870         symconst_symbol sym;
1871         sym.type_p = get_ir_type(type);
1872         return new_SymConst(mode, sym, symconst_type_size);
1873 }
1874
1875 static ir_node *alignof_to_firm(const alignof_expression_t *expression)
1876 {
1877         type_t *const  type = expression->type;
1878         ir_mode *const mode = get_ir_mode(expression->expression.datatype);
1879         symconst_symbol sym;
1880         sym.type_p = get_ir_type(type);
1881         return new_SymConst(mode, sym, symconst_type_align);
1882 }
1883
1884 static long fold_constant(const expression_t *expression)
1885 {
1886         assert(is_constant_expression(expression));
1887
1888         ir_graph *old_current_ir_graph = current_ir_graph;
1889         if(current_ir_graph == NULL) {
1890                 current_ir_graph = get_const_code_irg();
1891         }
1892
1893         ir_node *cnst = expression_to_firm(expression);
1894         current_ir_graph = old_current_ir_graph;
1895
1896         if(!is_Const(cnst)) {
1897                 panic("couldn't fold constant\n");
1898         }
1899
1900         tarval *tv = get_Const_tarval(cnst);
1901         if(!tarval_is_long(tv)) {
1902                 panic("result of constant folding is not integer\n");
1903         }
1904
1905         return get_tarval_long(tv);
1906 }
1907
1908 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1909 {
1910         dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1911
1912         /* first try to fold a constant condition */
1913         if(is_constant_expression(expression->condition)) {
1914                 long val = fold_constant(expression->condition);
1915                 if(val) {
1916                         return expression_to_firm(expression->true_expression);
1917                 } else {
1918                         return expression_to_firm(expression->false_expression);
1919                 }
1920         }
1921
1922         ir_node *cur_block   = get_cur_block();
1923
1924         /* create the true block */
1925         ir_node *true_block  = new_immBlock();
1926
1927         ir_node *true_val = expression_to_firm(expression->true_expression);
1928         ir_node *true_jmp = new_Jmp();
1929
1930         /* create the false block */
1931         ir_node *false_block = new_immBlock();
1932
1933         ir_node *false_val = expression_to_firm(expression->false_expression);
1934         ir_node *false_jmp = new_Jmp();
1935
1936         /* create the condition evaluation */
1937         set_cur_block(cur_block);
1938         create_condition_evaluation(expression->condition, true_block, false_block);
1939         mature_immBlock(true_block);
1940         mature_immBlock(false_block);
1941
1942         /* create the common block */
1943         ir_node *common_block = new_immBlock();
1944         add_immBlock_pred(common_block, true_jmp);
1945         add_immBlock_pred(common_block, false_jmp);
1946         mature_immBlock(common_block);
1947
1948         /* TODO improve static semantics, so either both or no values are NULL */
1949         if (true_val == NULL || false_val == NULL)
1950                 return NULL;
1951
1952         ir_node *in[2] = { true_val, false_val };
1953         ir_mode *mode  = get_irn_mode(true_val);
1954         assert(get_irn_mode(false_val) == mode);
1955         ir_node *val   = new_d_Phi(dbgi, 2, in, mode);
1956
1957         return val;
1958 }
1959
1960 static ir_node *select_addr(const select_expression_t *expression)
1961 {
1962         dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1963
1964         ir_node *compound_addr = expression_to_firm(expression->compound);
1965
1966         declaration_t *entry = expression->compound_entry;
1967         assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1968         ir_entity     *entity = entry->v.entity;
1969
1970         assert(entity != NULL);
1971
1972         ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1973
1974         return sel;
1975 }
1976
1977 static ir_node *select_to_firm(const select_expression_t *expression)
1978 {
1979         dbg_info *dbgi   = get_dbg_info(&expression->expression.source_position);
1980         ir_node  *addr   = select_addr(expression);
1981         type_t   *type   = revert_automatic_type_conversion(
1982                         (const expression_t*) expression);
1983         type             = skip_typeref(type);
1984         ir_type  *irtype = get_ir_type(type);
1985
1986         return deref_address(irtype, addr, dbgi);
1987 }
1988
1989 /* Values returned by __builtin_classify_type. */
1990 typedef enum gcc_type_class
1991 {
1992         no_type_class = -1,
1993         void_type_class,
1994         integer_type_class,
1995         char_type_class,
1996         enumeral_type_class,
1997         boolean_type_class,
1998         pointer_type_class,
1999         reference_type_class,
2000         offset_type_class,
2001         real_type_class,
2002         complex_type_class,
2003         function_type_class,
2004         method_type_class,
2005         record_type_class,
2006         union_type_class,
2007         array_type_class,
2008         string_type_class,
2009         set_type_class,
2010         file_type_class,
2011         lang_type_class
2012 } gcc_type_class;
2013
2014 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2015 {
2016         const type_t *const type = expr->type_expression->base.datatype;
2017
2018         gcc_type_class tc;
2019         switch (type->kind)
2020         {
2021                 case TYPE_ATOMIC: {
2022                         const atomic_type_t *const atomic_type = &type->atomic;
2023                         switch (atomic_type->atype) {
2024                                 /* should not be reached */
2025                                 case ATOMIC_TYPE_INVALID:
2026                                         tc = no_type_class;
2027                                         break;
2028
2029                                 /* gcc cannot do that */
2030                                 case ATOMIC_TYPE_VOID:
2031                                         tc = void_type_class;
2032                                         break;
2033
2034                                 case ATOMIC_TYPE_CHAR:      /* gcc handles this as integer */
2035                                 case ATOMIC_TYPE_SCHAR:     /* gcc handles this as integer */
2036                                 case ATOMIC_TYPE_UCHAR:     /* gcc handles this as integer */
2037                                 case ATOMIC_TYPE_SHORT:
2038                                 case ATOMIC_TYPE_USHORT:
2039                                 case ATOMIC_TYPE_INT:
2040                                 case ATOMIC_TYPE_UINT:
2041                                 case ATOMIC_TYPE_LONG:
2042                                 case ATOMIC_TYPE_ULONG:
2043                                 case ATOMIC_TYPE_LONGLONG:
2044                                 case ATOMIC_TYPE_ULONGLONG:
2045                                 case ATOMIC_TYPE_BOOL:      /* gcc handles this as integer */
2046                                         tc = integer_type_class;
2047                                         break;
2048
2049                                 case ATOMIC_TYPE_FLOAT:
2050                                 case ATOMIC_TYPE_DOUBLE:
2051                                 case ATOMIC_TYPE_LONG_DOUBLE:
2052                                         tc = real_type_class;
2053                                         break;
2054
2055 #ifdef PROVIDE_COMPLEX
2056                                 case ATOMIC_TYPE_FLOAT_COMPLEX:
2057                                 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2058                                 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2059                                         tc = complex_type_class;
2060                                         break;
2061                                 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2062                                 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2063                                 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2064                                         tc = complex_type_class;
2065                                         break;
2066 #endif
2067
2068                                 default:
2069                                         panic("Unimplemented case in classify_type_to_firm().");
2070                         }
2071                         break;
2072                 }
2073
2074                 case TYPE_ARRAY:           /* gcc handles this as pointer */
2075                 case TYPE_FUNCTION:        /* gcc handles this as pointer */
2076                 case TYPE_POINTER:         tc = pointer_type_class; break;
2077                 case TYPE_COMPOUND_STRUCT: tc = record_type_class;  break;
2078                 case TYPE_COMPOUND_UNION:  tc = union_type_class;   break;
2079
2080                 /* gcc handles this as integer */
2081                 case TYPE_ENUM:            tc = integer_type_class; break;
2082
2083                 default:
2084                         panic("Unimplemented case in classify_type_to_firm().");
2085         }
2086
2087         dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
2088         ir_mode  *const mode = mode_int;
2089         tarval   *const tv   = new_tarval_from_long(tc, mode);
2090         return new_d_Const(dbgi, mode, tv);
2091 }
2092
2093 static ir_node *function_name_to_firm(
2094                 const string_literal_expression_t *const expr)
2095 {
2096         if (current_function_name == NULL) {
2097                 const source_position_t *const src_pos =
2098                         &expr->expression.source_position;
2099                 const char *const name = current_function_decl->symbol->string;
2100                 current_function_name = string_to_firm(src_pos, "__func__", name);
2101         }
2102
2103         return current_function_name;
2104 }
2105
2106 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2107 {
2108         statement_t *statement = expr->statement;
2109
2110         assert(statement->kind == STATEMENT_COMPOUND);
2111         return compound_statement_to_firm(&statement->compound);
2112 }
2113
2114 static ir_node *va_start_expression_to_firm(
2115         const va_start_expression_t *const expr)
2116 {
2117         ir_type   *const method_type = get_ir_type(current_function_decl->type);
2118         int        const n           = get_method_n_params(method_type) - 1;
2119         ir_entity *const parm_ent    = get_method_value_param_ent(method_type, n);
2120         ir_node   *const arg_base    = get_irg_value_param_base(current_ir_graph);
2121         dbg_info  *const dbgi        =
2122                 get_dbg_info(&expr->expression.source_position);
2123         ir_node   *const no_mem      = new_NoMem();
2124         ir_node   *const arg_sel     =
2125                 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2126
2127         size_t     const parm_size   = get_type_size(expr->parameter->type);
2128         ir_node   *const cnst        = new_Const_long(mode_uint, parm_size);
2129         ir_node   *const add         = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2130         set_value_for_expression(expr->ap, add);
2131
2132         return NULL;
2133 }
2134
2135 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2136 {
2137         ir_type  *const irtype = get_ir_type(expr->expression.datatype);
2138         ir_node  *const ap     = expression_to_firm(expr->ap);
2139         dbg_info *const dbgi   = get_dbg_info(&expr->expression.source_position);
2140         ir_node  *const res    = deref_address(irtype, ap, dbgi);
2141
2142         size_t    const parm_size = get_type_size(expr->expression.datatype);
2143         ir_node  *const cnst      = new_Const_long(mode_uint, parm_size);
2144         ir_node  *const add       = new_d_Add(dbgi, ap, cnst, mode_P_data);
2145         set_value_for_expression(expr->ap, add);
2146
2147         return res;
2148 }
2149
2150 static ir_node *dereference_addr(const unary_expression_t *const expression)
2151 {
2152         assert(expression->expression.kind == EXPR_UNARY_DEREFERENCE);
2153         return expression_to_firm(expression->value);
2154 }
2155
2156 static ir_node *expression_to_addr(const expression_t *expression)
2157 {
2158         switch(expression->kind) {
2159         case EXPR_REFERENCE:
2160                 return reference_addr(&expression->reference);
2161         case EXPR_ARRAY_ACCESS:
2162                 return array_access_addr(&expression->array_access);
2163         case EXPR_SELECT:
2164                 return select_addr(&expression->select);
2165         case EXPR_CALL:
2166                 return call_expression_to_firm(&expression->call);
2167         case EXPR_UNARY_DEREFERENCE: {
2168                 return dereference_addr(&expression->unary);
2169         }
2170         default:
2171                 break;
2172         }
2173         panic("trying to get address of non-lvalue");
2174 }
2175
2176 static ir_node *_expression_to_firm(const expression_t *expression)
2177 {
2178         switch(expression->kind) {
2179         case EXPR_CONST:
2180                 return const_to_firm(&expression->conste);
2181         case EXPR_STRING_LITERAL:
2182                 return string_literal_to_firm(&expression->string);
2183         case EXPR_WIDE_STRING_LITERAL:
2184                 return wide_string_literal_to_firm(&expression->wide_string);
2185         case EXPR_REFERENCE:
2186                 return reference_expression_to_firm(&expression->reference);
2187         case EXPR_CALL:
2188                 return call_expression_to_firm(&expression->call);
2189         EXPR_UNARY_CASES
2190                 return unary_expression_to_firm(&expression->unary);
2191         EXPR_BINARY_CASES
2192                 return binary_expression_to_firm(&expression->binary);
2193         case EXPR_ARRAY_ACCESS:
2194                 return array_access_to_firm(&expression->array_access);
2195         case EXPR_SIZEOF:
2196                 return sizeof_to_firm(&expression->sizeofe);
2197         case EXPR_ALIGNOF:
2198                 return alignof_to_firm(&expression->alignofe);
2199         case EXPR_CONDITIONAL:
2200                 return conditional_to_firm(&expression->conditional);
2201         case EXPR_SELECT:
2202                 return select_to_firm(&expression->select);
2203         case EXPR_CLASSIFY_TYPE:
2204                 return classify_type_to_firm(&expression->classify_type);
2205         case EXPR_FUNCTION:
2206         case EXPR_PRETTY_FUNCTION:
2207                 return function_name_to_firm(&expression->string);
2208         case EXPR_STATEMENT:
2209                 return statement_expression_to_firm(&expression->statement);
2210         case EXPR_VA_START:
2211                 return va_start_expression_to_firm(&expression->va_starte);
2212         case EXPR_VA_ARG:
2213                 return va_arg_expression_to_firm(&expression->va_arge);
2214         case EXPR_OFFSETOF:
2215         case EXPR_BUILTIN_SYMBOL:
2216                 panic("unimplemented expression found");
2217
2218         case EXPR_UNKNOWN:
2219         case EXPR_INVALID:
2220                 break;
2221         }
2222         panic("invalid expression found");
2223 }
2224
2225 static ir_node *expression_to_firm(const expression_t *expression)
2226 {
2227         ir_node *res = _expression_to_firm(expression);
2228
2229         if(res != NULL && get_irn_mode(res) == mode_b) {
2230                 ir_mode *mode = get_ir_mode(expression->base.datatype);
2231                 res           = create_conv(NULL, res, mode);
2232         }
2233
2234         return res;
2235 }
2236
2237 static ir_node *expression_to_modeb(const expression_t *expression)
2238 {
2239         ir_node *res = _expression_to_firm(expression);
2240         res          = create_conv(NULL, res, mode_b);
2241
2242         return res;
2243 }
2244
2245 /**
2246  * create a short-circuit expression evaluation that tries to construct
2247  * efficient control flow structures for &&, || and ! expressions
2248  */
2249 static void create_condition_evaluation(const expression_t *expression,
2250                                         ir_node *true_block,
2251                                         ir_node *false_block)
2252 {
2253         switch(expression->kind) {
2254         case EXPR_UNARY_NOT: {
2255                 const unary_expression_t *unary_expression = &expression->unary;
2256                 create_condition_evaluation(unary_expression->value, false_block,
2257                                             true_block);
2258                 return;
2259         }
2260         case EXPR_BINARY_LOGICAL_AND: {
2261                 const binary_expression_t *binary_expression = &expression->binary;
2262
2263                 ir_node *cur_block   = get_cur_block();
2264                 ir_node *extra_block = new_immBlock();
2265                 set_cur_block(cur_block);
2266                 create_condition_evaluation(binary_expression->left, extra_block,
2267                                             false_block);
2268                 mature_immBlock(extra_block);
2269                 set_cur_block(extra_block);
2270                 create_condition_evaluation(binary_expression->right, true_block,
2271                                             false_block);
2272                 return;
2273         }
2274         case EXPR_BINARY_LOGICAL_OR: {
2275                 const binary_expression_t *binary_expression = &expression->binary;
2276
2277                 ir_node *cur_block   = get_cur_block();
2278                 ir_node *extra_block = new_immBlock();
2279                 set_cur_block(cur_block);
2280                 create_condition_evaluation(binary_expression->left, true_block,
2281                                             extra_block);
2282                 mature_immBlock(extra_block);
2283                 set_cur_block(extra_block);
2284                 create_condition_evaluation(binary_expression->right, true_block,
2285                                             false_block);
2286                 return;
2287         }
2288         default:
2289                 break;
2290         }
2291
2292         dbg_info *dbgi       = get_dbg_info(&expression->base.source_position);
2293         ir_node  *condition  = expression_to_modeb(expression);
2294         ir_node  *cond       = new_d_Cond(dbgi, condition);
2295         ir_node  *true_proj  = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2296         ir_node  *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2297
2298         add_immBlock_pred(true_block, true_proj);
2299         add_immBlock_pred(false_block, false_proj);
2300
2301         set_cur_block(NULL);
2302 }
2303
2304
2305
2306 static void create_declaration_entity(declaration_t *declaration,
2307                                       declaration_type_t declaration_type,
2308                                       ir_type *parent_type)
2309 {
2310         ident     *const id     = new_id_from_str(declaration->symbol->string);
2311         ir_type   *const irtype = get_ir_type(declaration->type);
2312         dbg_info  *const dbgi   = get_dbg_info(&declaration->source_position);
2313         ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2314         set_entity_ld_ident(entity, id);
2315
2316         declaration->declaration_type = (unsigned char) declaration_type;
2317         declaration->v.entity         = entity;
2318         set_entity_variability(entity, variability_uninitialized);
2319         if(parent_type == get_tls_type())
2320                 set_entity_allocation(entity, allocation_automatic);
2321         else if(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE)
2322                 set_entity_allocation(entity, allocation_static);
2323         /* TODO: visibility? */
2324 }
2325
2326 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2327
2328 enum compound_graph_entry_type_t {
2329         COMPOUND_GRAPH_ENTRY_ARRAY,
2330         COMPOUND_GRAPH_ENTRY_COMPOUND
2331 };
2332
2333 struct compound_graph_path_entry_t {
2334         int type;
2335         union {
2336                 ir_entity *entity;
2337                 int        array_index;
2338         } v;
2339         compound_graph_path_entry_t *prev;
2340 };
2341
2342 static void create_initializer_object(initializer_t *initializer, type_t *type,
2343                 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2344
2345 static compound_graph_path *create_compound_path(ir_type *type,
2346                 compound_graph_path_entry_t *entry, int len)
2347 {
2348         compound_graph_path *path = new_compound_graph_path(type, len);
2349
2350         int i = len - 1;
2351         for( ; entry != NULL; entry = entry->prev, --i) {
2352                 assert(i >= 0);
2353                 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2354                         set_compound_graph_path_node(path, i, entry->v.entity);
2355                 } else {
2356                         assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2357                         set_compound_graph_path_array_index(path, i, entry->v.array_index);
2358                 }
2359         }
2360         assert(i == -1);
2361
2362         return path;
2363 }
2364
2365 static void create_initializer_value(initializer_value_t *initializer,
2366                                      ir_entity *entity,
2367                                      compound_graph_path_entry_t *entry,
2368                                      int len)
2369 {
2370         ir_node             *node = expression_to_firm(initializer->value);
2371         ir_type             *type = get_entity_type(entity);
2372         compound_graph_path *path = create_compound_path(type, entry, len);
2373         add_compound_ent_value_w_path(entity, node, path);
2374 }
2375
2376 static void create_initializer_compound(initializer_list_t *initializer,
2377                                         compound_type_t *type,
2378                                         ir_entity *entity,
2379                                         compound_graph_path_entry_t *last_entry,
2380                                         int len)
2381 {
2382         declaration_t *compound_declaration = type->declaration;
2383
2384         declaration_t *compound_entry = compound_declaration->context.declarations;
2385
2386         compound_graph_path_entry_t entry;
2387         entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2388         entry.prev = last_entry;
2389         ++len;
2390
2391         size_t i = 0;
2392         for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2393                 if(compound_entry->symbol == NULL)
2394                         continue;
2395                 if(compound_entry->namespc != NAMESPACE_NORMAL)
2396                         continue;
2397
2398                 if(i >= initializer->len)
2399                         break;
2400
2401                 entry.v.entity = compound_entry->v.entity;
2402
2403                 initializer_t *sub_initializer = initializer->initializers[i];
2404
2405                 assert(compound_entry != NULL);
2406                 assert(compound_entry->declaration_type
2407                                 == DECLARATION_TYPE_COMPOUND_MEMBER);
2408
2409                 if(sub_initializer->kind == INITIALIZER_VALUE) {
2410                         create_initializer_value(&sub_initializer->value,
2411                                                  entity, &entry, len);
2412                 } else {
2413                         type_t *entry_type = skip_typeref(compound_entry->type);
2414                         create_initializer_object(sub_initializer, entry_type, entity,
2415                                                   &entry, len);
2416                 }
2417
2418                 ++i;
2419         }
2420 }
2421
2422 static void create_initializer_array(initializer_list_t *initializer,
2423                                      array_type_t *type, ir_entity *entity,
2424                                      compound_graph_path_entry_t *last_entry,
2425                                      int len)
2426 {
2427         type_t *element_type = type->element_type;
2428         element_type         = skip_typeref(element_type);
2429
2430         compound_graph_path_entry_t entry;
2431         entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2432         entry.prev = last_entry;
2433         ++len;
2434
2435         size_t i;
2436         for(i = 0; i < initializer->len; ++i) {
2437                 entry.v.array_index = i;
2438
2439                 initializer_t *sub_initializer = initializer->initializers[i];
2440
2441                 if(sub_initializer->kind == INITIALIZER_VALUE) {
2442                         create_initializer_value(&sub_initializer->value,
2443                                                  entity, &entry, len);
2444                 } else {
2445                         create_initializer_object(sub_initializer, element_type, entity,
2446                                                   &entry, len);
2447                 }
2448         }
2449
2450 #if 0
2451         /* TODO: initialize rest... */
2452         if(type->size_expression != NULL) {
2453                 size_t array_len = fold_constant(type->size_expression);
2454                 for( ; i < array_len; ++i) {
2455
2456                 }
2457         }
2458 #endif
2459 }
2460
2461 static void create_initializer_string(initializer_string_t *initializer,
2462                                       array_type_t *type, ir_entity *entity,
2463                                       compound_graph_path_entry_t *last_entry,
2464                                       int len)
2465 {
2466         type_t *element_type = type->element_type;
2467         element_type         = skip_typeref(element_type);
2468
2469         compound_graph_path_entry_t entry;
2470         entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2471         entry.prev = last_entry;
2472         ++len;
2473
2474         ir_type    *irtype  = get_entity_type(entity);
2475         size_t      arr_len = get_array_type_size(type);
2476         const char *p       = initializer->string;
2477         size_t      i       = 0;
2478         for(i = 0; i < arr_len; ++i, ++p) {
2479                 entry.v.array_index = i;
2480
2481                 ir_node             *node = new_Const_long(mode_Bs, *p);
2482                 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2483                 add_compound_ent_value_w_path(entity, node, path);
2484
2485                 if(*p == '\0')
2486                         break;
2487         }
2488 }
2489
2490 static void create_initializer_wide_string(
2491         const initializer_wide_string_t *const initializer, array_type_t *const type,
2492         ir_entity *const entity, compound_graph_path_entry_t *const last_entry,
2493         int len)
2494 {
2495         type_t *element_type = type->element_type;
2496         element_type         = skip_typeref(element_type);
2497
2498         compound_graph_path_entry_t entry;
2499         entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2500         entry.prev = last_entry;
2501         ++len;
2502
2503         ir_type           *const irtype  = get_entity_type(entity);
2504         const size_t             arr_len = get_array_type_size(type);
2505         const wchar_rep_t *      p       = initializer->string.begin;
2506         const wchar_rep_t *const end     = p + initializer->string.size;
2507         for (size_t i = 0; i < arr_len && p != end; ++i, ++p) {
2508                 entry.v.array_index = i;
2509
2510                 ir_node             *node = new_Const_long(mode_int, *p);
2511                 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2512                 add_compound_ent_value_w_path(entity, node, path);
2513         }
2514 }
2515
2516 static void create_initializer_object(initializer_t *initializer, type_t *type,
2517                 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2518 {
2519         if(is_type_array(type)) {
2520                 array_type_t *array_type = &type->array;
2521
2522                 switch (initializer->kind) {
2523                         case INITIALIZER_STRING: {
2524                                 initializer_string_t *const string = &initializer->string;
2525                                 create_initializer_string(string, array_type, entity, entry, len);
2526                                 return;
2527                         }
2528
2529                         case INITIALIZER_WIDE_STRING: {
2530                                 initializer_wide_string_t *const string = &initializer->wide_string;
2531                                 create_initializer_wide_string(string, array_type, entity, entry, len);
2532                                 return;
2533                         }
2534
2535                         case INITIALIZER_LIST: {
2536                                 initializer_list_t *const list = &initializer->list;
2537                                 create_initializer_array(list, array_type, entity, entry, len);
2538                                 return;
2539                         }
2540
2541                         case INITIALIZER_VALUE:
2542                                 break;
2543                 }
2544                 panic("Unhandled initializer");
2545         } else {
2546                 assert(initializer->kind == INITIALIZER_LIST);
2547                 initializer_list_t *list = &initializer->list;
2548
2549                 assert(is_type_compound(type));
2550                 compound_type_t *compound_type = &type->compound;
2551                 create_initializer_compound(list, compound_type, entity, entry, len);
2552         }
2553 }
2554
2555 static void create_initializer_local_variable_entity(declaration_t *declaration)
2556 {
2557         initializer_t *initializer = declaration->init.initializer;
2558         dbg_info      *dbgi        = get_dbg_info(&declaration->source_position);
2559         ir_entity     *entity      = declaration->v.entity;
2560         ir_node       *memory      = get_store();
2561         ir_node       *nomem       = new_NoMem();
2562         ir_node       *frame       = get_irg_frame(current_ir_graph);
2563         ir_node       *addr        = new_d_simpleSel(dbgi, nomem, frame, entity);
2564
2565         if(initializer->kind == INITIALIZER_VALUE) {
2566                 initializer_value_t *initializer_value = &initializer->value;
2567
2568                 ir_node *value = expression_to_firm(initializer_value->value);
2569                 type_t  *type  = skip_typeref(declaration->type);
2570                 assign_value(dbgi, addr, type, value);
2571                 return;
2572         }
2573
2574         /* create a "template" entity which is copied to the entity on the stack */
2575         ident     *const id          = unique_ident("initializer");
2576         ir_type   *const irtype      = get_ir_type(declaration->type);
2577         ir_type   *const global_type = get_glob_type();
2578         ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
2579         set_entity_ld_ident(init_entity, id);
2580
2581         set_entity_variability(init_entity, variability_initialized);
2582         set_entity_visibility(init_entity, visibility_local);
2583         set_entity_allocation(init_entity, allocation_static);
2584
2585         ir_graph *const old_current_ir_graph = current_ir_graph;
2586         current_ir_graph = get_const_code_irg();
2587
2588         type_t *const type = skip_typeref(declaration->type);
2589         create_initializer_object(initializer, type, init_entity, NULL, 0);
2590
2591         assert(current_ir_graph == get_const_code_irg());
2592         current_ir_graph = old_current_ir_graph;
2593
2594         ir_node *const src_addr  = create_symconst(dbgi, mode_P_data, init_entity);
2595         ir_node *const copyb     = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2596
2597         ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2598         set_store(copyb_mem);
2599 }
2600
2601 static void create_initializer(declaration_t *declaration)
2602 {
2603         initializer_t *initializer = declaration->init.initializer;
2604         if(initializer == NULL)
2605                 return;
2606
2607         declaration_type_t declaration_type
2608                 = (declaration_type_t) declaration->declaration_type;
2609         if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2610                 create_initializer_local_variable_entity(declaration);
2611                 return;
2612         }
2613
2614         if(initializer->kind == INITIALIZER_VALUE) {
2615                 initializer_value_t *initializer_value = &initializer->value;
2616
2617                 ir_node *value = expression_to_firm(initializer_value->value);
2618
2619                 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2620                         set_value(declaration->v.value_number, value);
2621                 } else {
2622                         assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2623
2624                         ir_entity *entity = declaration->v.entity;
2625
2626                         set_entity_variability(entity, variability_initialized);
2627                         set_atomic_ent_value(entity, value);
2628                 }
2629         } else {
2630                 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2631                                 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2632
2633                 ir_entity *entity = declaration->v.entity;
2634                 set_entity_variability(entity, variability_initialized);
2635
2636                 type_t *type = skip_typeref(declaration->type);
2637                 create_initializer_object(initializer, type, entity, NULL, 0);
2638         }
2639 }
2640
2641 static void create_local_variable(declaration_t *declaration)
2642 {
2643         assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2644
2645         bool needs_entity = declaration->address_taken;
2646         type_t *type = skip_typeref(declaration->type);
2647
2648         if(is_type_array(type) || is_type_compound(type)) {
2649                 needs_entity = true;
2650         }
2651
2652         if(needs_entity) {
2653                 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2654                 create_declaration_entity(declaration,
2655                                           DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2656                                           frame_type);
2657         } else {
2658                 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2659                 declaration->v.value_number   = next_value_number_function;
2660                 ++next_value_number_function;
2661         }
2662
2663         create_initializer(declaration);
2664 }
2665
2666 static void create_local_static_variable(declaration_t *declaration)
2667 {
2668         assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2669
2670         type_t    *const type        = skip_typeref(declaration->type);
2671         ir_type   *const global_type = get_glob_type();
2672         ident     *const id          = unique_ident(declaration->symbol->string);
2673         ir_type   *const irtype      = get_ir_type(type);
2674         dbg_info  *const dbgi        = get_dbg_info(&declaration->source_position);
2675         ir_entity *const entity      = new_d_entity(global_type, id, irtype, dbgi);
2676         set_entity_ld_ident(entity, id);
2677
2678         declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2679         declaration->v.entity         = entity;
2680         set_entity_variability(entity, variability_uninitialized);
2681         set_entity_visibility(entity, visibility_local);
2682         set_entity_allocation(entity, allocation_static);
2683
2684         ir_graph *const old_current_ir_graph = current_ir_graph;
2685         current_ir_graph = get_const_code_irg();
2686
2687         create_initializer(declaration);
2688
2689         assert(current_ir_graph == get_const_code_irg());
2690         current_ir_graph = old_current_ir_graph;
2691 }
2692
2693
2694
2695 static void return_statement_to_firm(return_statement_t *statement)
2696 {
2697         if(get_cur_block() == NULL)
2698                 return;
2699
2700         ir_type *func_irtype = get_ir_type(current_function_decl->type);
2701
2702         dbg_info *dbgi  = get_dbg_info(&statement->statement.source_position);
2703
2704         ir_node *in[1];
2705         int      in_len;
2706         if(get_method_n_ress(func_irtype) > 0) {
2707                 ir_type *res_type = get_method_res_type(func_irtype, 0);
2708
2709                 if(statement->return_value != NULL) {
2710                         ir_node *node = expression_to_firm(statement->return_value);
2711                         node  = do_strict_conv(dbgi, node);
2712                         in[0] = node;
2713                 } else {
2714                         ir_mode *mode;
2715                         if(is_compound_type(res_type)) {
2716                                 mode = mode_P_data;
2717                         } else {
2718                                 mode = get_type_mode(res_type);
2719                         }
2720                         in[0] = new_Unknown(mode);
2721                 }
2722                 in_len = 1;
2723         } else {
2724                 /* build return_value for its side effects */
2725                 if(statement->return_value != NULL) {
2726                         expression_to_firm(statement->return_value);
2727                 }
2728                 in_len = 0;
2729         }
2730
2731         ir_node  *store = get_store();
2732         ir_node  *ret   = new_d_Return(dbgi, store, in_len, in);
2733
2734         ir_node *end_block = get_irg_end_block(current_ir_graph);
2735         add_immBlock_pred(end_block, ret);
2736
2737         set_cur_block(NULL);
2738 }
2739
2740 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
2741 {
2742         if(get_cur_block() == NULL)
2743                 return NULL;
2744
2745         return expression_to_firm(statement->expression);
2746 }
2747
2748 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
2749 {
2750         ir_node     *result    = NULL;
2751         statement_t *statement = compound->statements;
2752         for( ; statement != NULL; statement = statement->base.next) {
2753                 //context2firm(&statement->context);
2754
2755                 if(statement->base.next == NULL
2756                                 && statement->kind == STATEMENT_EXPRESSION) {
2757                         result = expression_statement_to_firm(
2758                                         &statement->expression);
2759                         break;
2760                 }
2761                 statement_to_firm(statement);
2762         }
2763
2764         return result;
2765 }
2766
2767 static void create_local_declaration(declaration_t *declaration)
2768 {
2769         type_t *type = skip_typeref(declaration->type);
2770
2771         switch ((storage_class_tag_t) declaration->storage_class) {
2772         case STORAGE_CLASS_STATIC:
2773                 create_local_static_variable(declaration);
2774                 return;
2775         case STORAGE_CLASS_ENUM_ENTRY:
2776                 panic("enum entry declaration in local block found");
2777         case STORAGE_CLASS_EXTERN:
2778                 panic("extern declaration in local block found");
2779         case STORAGE_CLASS_NONE:
2780         case STORAGE_CLASS_AUTO:
2781         case STORAGE_CLASS_REGISTER:
2782                 if(is_type_function(type)) {
2783                         panic("nested functions not supported yet");
2784                 } else {
2785                         create_local_variable(declaration);
2786                 }
2787                 return;
2788         case STORAGE_CLASS_TYPEDEF:
2789         case STORAGE_CLASS_THREAD:
2790         case STORAGE_CLASS_THREAD_EXTERN:
2791         case STORAGE_CLASS_THREAD_STATIC:
2792                 return;
2793         }
2794         panic("invalid storage class found");
2795 }
2796
2797 static void declaration_statement_to_firm(declaration_statement_t *statement)
2798 {
2799         declaration_t *declaration = statement->declarations_begin;
2800         declaration_t *end         = statement->declarations_end->next;
2801         for( ; declaration != end; declaration = declaration->next) {
2802                 create_local_variable(declaration);
2803         }
2804 }
2805
2806 static void if_statement_to_firm(if_statement_t *statement)
2807 {
2808         ir_node *cur_block = get_cur_block();
2809
2810         ir_node *fallthrough_block = new_immBlock();
2811
2812         /* the true (blocks) */
2813         ir_node *true_block;
2814         if (statement->true_statement != NULL) {
2815                 true_block = new_immBlock();
2816                 statement_to_firm(statement->true_statement);
2817                 if(get_cur_block() != NULL) {
2818                         ir_node *jmp = new_Jmp();
2819                         add_immBlock_pred(fallthrough_block, jmp);
2820                 }
2821         } else {
2822                 true_block = fallthrough_block;
2823         }
2824
2825         /* the false (blocks) */
2826         ir_node *false_block;
2827         if(statement->false_statement != NULL) {
2828                 false_block = new_immBlock();
2829
2830                 statement_to_firm(statement->false_statement);
2831                 if(get_cur_block() != NULL) {
2832                         ir_node *jmp = new_Jmp();
2833                         add_immBlock_pred(fallthrough_block, jmp);
2834                 }
2835         } else {
2836                 false_block = fallthrough_block;
2837         }
2838
2839         /* create the condition */
2840         if(cur_block != NULL) {
2841                 set_cur_block(cur_block);
2842                 create_condition_evaluation(statement->condition, true_block,
2843                                             false_block);
2844         }
2845
2846         mature_immBlock(true_block);
2847         if(false_block != fallthrough_block) {
2848                 mature_immBlock(false_block);
2849         }
2850         mature_immBlock(fallthrough_block);
2851
2852         set_cur_block(fallthrough_block);
2853 }
2854
2855 static void while_statement_to_firm(while_statement_t *statement)
2856 {
2857         ir_node *jmp = NULL;
2858         if(get_cur_block() != NULL) {
2859                 jmp = new_Jmp();
2860         }
2861
2862         /* create the header block */
2863         ir_node *header_block = new_immBlock();
2864         if(jmp != NULL) {
2865                 add_immBlock_pred(header_block, jmp);
2866         }
2867
2868         /* the false block */
2869         ir_node *false_block = new_immBlock();
2870
2871         /* the loop body */
2872         ir_node *body_block;
2873         if (statement->body != NULL) {
2874                 ir_node *old_continue_label = continue_label;
2875                 ir_node *old_break_label    = break_label;
2876                 continue_label              = header_block;
2877                 break_label                 = false_block;
2878
2879                 body_block = new_immBlock();
2880                 statement_to_firm(statement->body);
2881
2882                 assert(continue_label == header_block);
2883                 assert(break_label    == false_block);
2884                 continue_label = old_continue_label;
2885                 break_label    = old_break_label;
2886
2887                 if(get_cur_block() != NULL) {
2888                         jmp = new_Jmp();
2889                         add_immBlock_pred(header_block, jmp);
2890                 }
2891         } else {
2892                 body_block = header_block;
2893         }
2894
2895         /* create the condition */
2896         set_cur_block(header_block);
2897
2898         create_condition_evaluation(statement->condition, body_block, false_block);
2899         mature_immBlock(body_block);
2900         mature_immBlock(false_block);
2901         mature_immBlock(header_block);
2902
2903         set_cur_block(false_block);
2904 }
2905
2906 static void do_while_statement_to_firm(do_while_statement_t *statement)
2907 {
2908         ir_node *jmp = NULL;
2909         if(get_cur_block() != NULL) {
2910                 jmp = new_Jmp();
2911         }
2912
2913         /* create the header block */
2914         ir_node *header_block = new_immBlock();
2915
2916         /* the false block */
2917         ir_node *false_block = new_immBlock();
2918
2919         /* the loop body */
2920         ir_node *body_block = new_immBlock();
2921         if(jmp != NULL) {
2922                 add_immBlock_pred(body_block, jmp);
2923         }
2924
2925         if (statement->body != NULL) {
2926                 ir_node *old_continue_label = continue_label;
2927                 ir_node *old_break_label    = break_label;
2928                 continue_label              = header_block;
2929                 break_label                 = false_block;
2930
2931                 statement_to_firm(statement->body);
2932
2933                 assert(continue_label == header_block);
2934                 assert(break_label    == false_block);
2935                 continue_label = old_continue_label;
2936                 break_label    = old_break_label;
2937
2938                 if (get_cur_block() == NULL) {
2939                         mature_immBlock(header_block);
2940                         mature_immBlock(body_block);
2941                         mature_immBlock(false_block);
2942                         return;
2943                 }
2944         }
2945
2946         ir_node *body_jmp = new_Jmp();
2947         add_immBlock_pred(header_block, body_jmp);
2948         mature_immBlock(header_block);
2949
2950         /* create the condition */
2951         set_cur_block(header_block);
2952
2953         create_condition_evaluation(statement->condition, body_block, false_block);
2954         mature_immBlock(body_block);
2955         mature_immBlock(false_block);
2956         mature_immBlock(header_block);
2957
2958         set_cur_block(false_block);
2959 }
2960
2961 static void for_statement_to_firm(for_statement_t *statement)
2962 {
2963         ir_node *jmp = NULL;
2964         if (get_cur_block() != NULL) {
2965                 if(statement->initialisation != NULL) {
2966                         expression_to_firm(statement->initialisation);
2967                 }
2968
2969                 /* create declarations */
2970                 declaration_t *declaration = statement->context.declarations;
2971                 for( ; declaration != NULL; declaration = declaration->next) {
2972                         create_local_declaration(declaration);
2973                 }
2974
2975                 jmp = new_Jmp();
2976         }
2977
2978
2979         /* create the step block */
2980         ir_node *const step_block = new_immBlock();
2981         if (statement->step != NULL) {
2982                 expression_to_firm(statement->step);
2983         }
2984         ir_node *const step_jmp = new_Jmp();
2985
2986         /* create the header block */
2987         ir_node *const header_block = new_immBlock();
2988         if (jmp != NULL) {
2989                 add_immBlock_pred(header_block, jmp);
2990         }
2991         add_immBlock_pred(header_block, step_jmp);
2992
2993         /* the false block */
2994         ir_node *const false_block = new_immBlock();
2995
2996         /* the loop body */
2997         ir_node * body_block;
2998         if (statement->body != NULL) {
2999                 ir_node *const old_continue_label = continue_label;
3000                 ir_node *const old_break_label    = break_label;
3001                 continue_label = step_block;
3002                 break_label    = false_block;
3003
3004                 body_block = new_immBlock();
3005                 statement_to_firm(statement->body);
3006
3007                 assert(continue_label == step_block);
3008                 assert(break_label    == false_block);
3009                 continue_label = old_continue_label;
3010                 break_label    = old_break_label;
3011
3012                 if (get_cur_block() != NULL) {
3013                         jmp = new_Jmp();
3014                         add_immBlock_pred(step_block, jmp);
3015                 }
3016         } else {
3017                 body_block = step_block;
3018         }
3019
3020         /* create the condition */
3021         set_cur_block(header_block);
3022         if (statement->condition != NULL) {
3023                 create_condition_evaluation(statement->condition, body_block,
3024                                             false_block);
3025         } else {
3026                 keep_alive(header_block);
3027                 jmp = new_Jmp();
3028                 add_immBlock_pred(body_block, jmp);
3029         }
3030
3031         mature_immBlock(body_block);
3032         mature_immBlock(false_block);
3033         mature_immBlock(step_block);
3034         mature_immBlock(header_block);
3035         mature_immBlock(false_block);
3036
3037         set_cur_block(false_block);
3038 }
3039
3040 static void create_jump_statement(const statement_t *statement,
3041                                   ir_node *target_block)
3042 {
3043         if(get_cur_block() == NULL)
3044                 return;
3045
3046         dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3047         ir_node  *jump = new_d_Jmp(dbgi);
3048         add_immBlock_pred(target_block, jump);
3049
3050         set_cur_block(NULL);
3051 }
3052
3053 static void switch_statement_to_firm(const switch_statement_t *statement)
3054 {
3055         dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3056
3057         ir_node *expression  = expression_to_firm(statement->expression);
3058         ir_node *cond        = new_d_Cond(dbgi, expression);
3059         ir_node *break_block = new_immBlock();
3060
3061         set_cur_block(NULL);
3062
3063         ir_node *const old_switch_cond       = current_switch_cond;
3064         ir_node *const old_break_label       = break_label;
3065         const bool     old_saw_default_label = saw_default_label;
3066         current_switch_cond                  = cond;
3067         break_label                          = break_block;
3068
3069         statement_to_firm(statement->body);
3070
3071         if(get_cur_block() != NULL) {
3072                 ir_node *jmp = new_Jmp();
3073                 add_immBlock_pred(break_block, jmp);
3074         }
3075
3076         if (!saw_default_label) {
3077                 set_cur_block(get_nodes_block(cond));
3078                 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3079                                                         MAGIC_DEFAULT_PN_NUMBER);
3080                 add_immBlock_pred(break_block, proj);
3081         }
3082
3083         assert(current_switch_cond == cond);
3084         assert(break_label         == break_block);
3085         current_switch_cond = old_switch_cond;
3086         break_label         = old_break_label;
3087         saw_default_label   = old_saw_default_label;
3088
3089         mature_immBlock(break_block);
3090         set_cur_block(break_block);
3091 }
3092
3093 static void case_label_to_firm(const case_label_statement_t *statement)
3094 {
3095         dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
3096
3097         ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
3098
3099         /* let's create a node and hope firm constant folding creates a Const
3100          * node... */
3101         ir_node *proj;
3102         set_cur_block(get_nodes_block(current_switch_cond));
3103         if(statement->expression) {
3104                 long pn = fold_constant(statement->expression);
3105                 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
3106                         /* oops someone detected our cheating... */
3107                         panic("magic default pn used");
3108                 }
3109                 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
3110         } else {
3111                 saw_default_label = true;
3112                 proj = new_d_defaultProj(dbgi, current_switch_cond,
3113                                          MAGIC_DEFAULT_PN_NUMBER);
3114         }
3115
3116         ir_node *block = new_immBlock();
3117         if (fallthrough != NULL) {
3118                 add_immBlock_pred(block, fallthrough);
3119         }
3120         add_immBlock_pred(block, proj);
3121         mature_immBlock(block);
3122
3123         if(statement->label_statement != NULL) {
3124                 statement_to_firm(statement->label_statement);
3125         }
3126 }
3127
3128 static ir_node *get_label_block(declaration_t *label)
3129 {
3130         assert(label->namespc == NAMESPACE_LABEL);
3131
3132         if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
3133                 return label->v.block;
3134         }
3135         assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
3136
3137         ir_node *old_cur_block = get_cur_block();
3138         ir_node *block         = new_immBlock();
3139         set_cur_block(old_cur_block);
3140
3141         label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
3142         label->v.block          = block;
3143
3144         ARR_APP1(ir_node *, imature_blocks, block);
3145
3146         return block;
3147 }
3148
3149 static void label_to_firm(const label_statement_t *statement)
3150 {
3151         ir_node *block = get_label_block(statement->label);
3152
3153         if(get_cur_block() != NULL) {
3154                 ir_node *jmp = new_Jmp();
3155                 add_immBlock_pred(block, jmp);
3156         }
3157
3158         set_cur_block(block);
3159         keep_alive(block);
3160
3161         if(statement->label_statement != NULL) {
3162                 statement_to_firm(statement->label_statement);
3163         }
3164 }
3165
3166 static void goto_to_firm(const goto_statement_t *statement)
3167 {
3168         if(get_cur_block() == NULL)
3169                 return;
3170
3171         ir_node *block = get_label_block(statement->label);
3172         ir_node *jmp   = new_Jmp();
3173         add_immBlock_pred(block, jmp);
3174
3175         set_cur_block(NULL);
3176 }
3177
3178 typedef enum modifier_t {
3179         ASM_MODIFIER_WRITE_ONLY   = 1 << 0,
3180         ASM_MODIFIER_READ_WRITE   = 1 << 1,
3181         ASM_MODIFIER_COMMUTATIVE  = 1 << 2,
3182         ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
3183 } modifier_t;
3184
3185 #if 0
3186 static void asm_statement_to_firm(const asm_statement_t *statement)
3187 {
3188         bool needs_memory = false;
3189
3190         size_t         n_clobbers = 0;
3191         asm_clobber_t *clobber    = statement->clobbers;
3192         for( ; clobber != NULL; clobber = clobber->next) {
3193                 if(strcmp(clobber->clobber, "memory") == 0) {
3194                         needs_memory = true;
3195                         continue;
3196                 }
3197
3198                 ident *id = new_id_from_str(clobber->clobber);
3199                 obstack_ptr_grow(&asm_obst, id);
3200                 ++n_clobbers;
3201         }
3202         assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
3203         ident **clobbers = NULL;
3204         if(n_clobbers > 0) {
3205                 clobbers = obstack_finish(&asm_obst);
3206         }
3207
3208         /* find and count input and output constraints */
3209         asm_constraint_t *constraint = statement->inputs;
3210         for( ; constraint != NULL; constraint = constraint->next) {
3211                 int  modifiers      = 0;
3212                 bool supports_memop = false;
3213                 for(const char *c = constraint->constraints; *c != 0; ++c) {
3214                         /* TODO: improve error messages */
3215                         switch(*c) {
3216                         case '?':
3217                         case '!':
3218                                 panic("multiple alternative assembler constraints not "
3219                                       "supported");
3220                         case 'm':
3221                         case 'o':
3222                         case 'V':
3223                         case '<':
3224                         case '>':
3225                         case 'X':
3226                                 supports_memop = true;
3227                                 obstack_1grow(&asm_obst, *c);
3228                                 break;
3229                         case '=':
3230                                 if(modifiers & ASM_MODIFIER_READ_WRITE)
3231                                         panic("inconsistent register constraints");
3232                                 modifiers |= ASM_MODIFIER_WRITE_ONLY;
3233                                 break;
3234                         case '+':
3235                                 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
3236                                         panic("inconsistent register constraints");
3237                                 modifiers |= ASM_MODIFIER_READ_WRITE;
3238                                 break;
3239                         case '&':
3240                                 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
3241                                 panic("early clobber assembler constraint not supported yet");
3242                                 break;
3243                         case '%':
3244                                 modifiers |= ASM_MODIFIER_COMMUTATIVE;
3245                                 panic("commutative assembler constraint not supported yet");
3246                                 break;
3247                         case '#':
3248                                 /* skip register preferences stuff... */
3249                                 while(*c != 0 && *c != ',')
3250                                         ++c;
3251                                 break;
3252                         case '*':
3253                                 /* skip register preferences stuff... */
3254                                 ++c;
3255                                 break;
3256                         default:
3257                                 obstack_1grow(&asm_obst, *c);
3258                                 break;
3259                         }
3260                 }
3261                 obstack_1grow(&asm_obst, '\0');
3262                 const char *constraint_string = obstack_finish(&asm_obst);
3263
3264                 needs_memory |= supports_memop;
3265                 if(supports_memop) {
3266
3267                 }
3268         }
3269
3270 }
3271 #endif
3272
3273 static void statement_to_firm(statement_t *statement)
3274 {
3275         switch(statement->kind) {
3276         case STATEMENT_INVALID:
3277                 panic("invalid statement found");
3278         case STATEMENT_COMPOUND:
3279                 compound_statement_to_firm(&statement->compound);
3280                 return;
3281         case STATEMENT_RETURN:
3282                 return_statement_to_firm(&statement->returns);
3283                 return;
3284         case STATEMENT_EXPRESSION:
3285                 expression_statement_to_firm(&statement->expression);
3286                 return;
3287         case STATEMENT_IF:
3288                 if_statement_to_firm(&statement->ifs);
3289                 return;
3290         case STATEMENT_WHILE:
3291                 while_statement_to_firm(&statement->whiles);
3292                 return;
3293         case STATEMENT_DO_WHILE:
3294                 do_while_statement_to_firm(&statement->do_while);
3295                 return;
3296         case STATEMENT_DECLARATION:
3297                 declaration_statement_to_firm(&statement->declaration);
3298                 return;
3299         case STATEMENT_BREAK:
3300                 create_jump_statement(statement, break_label);
3301                 return;
3302         case STATEMENT_CONTINUE:
3303                 create_jump_statement(statement, continue_label);
3304                 return;
3305         case STATEMENT_SWITCH:
3306                 switch_statement_to_firm(&statement->switchs);
3307                 return;
3308         case STATEMENT_CASE_LABEL:
3309                 case_label_to_firm(&statement->case_label);
3310                 return;
3311         case STATEMENT_FOR:
3312                 for_statement_to_firm(&statement->fors);
3313                 return;
3314         case STATEMENT_LABEL:
3315                 label_to_firm(&statement->label);
3316                 return;
3317         case STATEMENT_GOTO:
3318                 goto_to_firm(&statement->gotos);
3319                 return;
3320         case STATEMENT_ASM:
3321                 //asm_statement_to_firm(&statement->asms);
3322                 //return;
3323                 break;
3324         }
3325         panic("Statement not implemented\n");
3326 }
3327
3328 static int count_decls_in_expression(const expression_t *expression);
3329
3330 static int count_local_declarations(const declaration_t *      decl,
3331                                     const declaration_t *const end)
3332 {
3333         int count = 0;
3334         for (; decl != end; decl = decl->next) {
3335                 const type_t *type = skip_typeref(decl->type);
3336                 switch (type->kind) {
3337                         case TYPE_ATOMIC:
3338                         case TYPE_ENUM:
3339                         case TYPE_POINTER:
3340                                 if (!decl->address_taken)
3341                                         ++count;
3342                                 break;
3343
3344                         default: break;
3345                 }
3346                 const initializer_t *initializer = decl->init.initializer;
3347                 /* FIXME: should walk initializer hierarchies... */
3348                 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
3349                         count += count_decls_in_expression(initializer->value.value);
3350                 }
3351         }
3352         return count;
3353 }
3354
3355 static int count_decls_in_expression(const expression_t *expression) {
3356         if(expression == NULL)
3357                 return 0;
3358
3359         switch(expression->base.kind) {
3360         case EXPR_STATEMENT:
3361                 return count_decls_in_stmts(expression->statement.statement);
3362         EXPR_BINARY_CASES
3363                 return count_decls_in_expression(expression->binary.left)
3364                         + count_decls_in_expression(expression->binary.right);
3365         EXPR_UNARY_CASES
3366                 return count_decls_in_expression(expression->unary.value);
3367
3368         default:
3369                 break;
3370         }
3371
3372         /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
3373          * (or implement all the missing expressions here/implement a walker)
3374          */
3375
3376         return 0;
3377 }
3378
3379 static int count_decls_in_stmts(const statement_t *stmt)
3380 {
3381         int count = 0;
3382         for (; stmt != NULL; stmt = stmt->base.next) {
3383                 switch (stmt->kind) {
3384                         case STATEMENT_DECLARATION: {
3385                                 const declaration_statement_t *const decl_stmt = &stmt->declaration;
3386                                 count += count_local_declarations(decl_stmt->declarations_begin,
3387                                                                   decl_stmt->declarations_end->next);
3388                                 break;
3389                         }
3390
3391                         case STATEMENT_COMPOUND: {
3392                                 const compound_statement_t *const comp =
3393                                         &stmt->compound;
3394                                 count += count_decls_in_stmts(comp->statements);
3395                                 break;
3396                         }
3397
3398                         case STATEMENT_IF: {
3399                                 const if_statement_t *const if_stmt = &stmt->ifs;
3400                                 count += count_decls_in_expression(if_stmt->condition);
3401                                 count += count_decls_in_stmts(if_stmt->true_statement);
3402                                 count += count_decls_in_stmts(if_stmt->false_statement);
3403                                 break;
3404                         }
3405
3406                         case STATEMENT_SWITCH: {
3407                                 const switch_statement_t *const switch_stmt = &stmt->switchs;
3408                                 count += count_decls_in_expression(switch_stmt->expression);
3409                                 count += count_decls_in_stmts(switch_stmt->body);
3410                                 break;
3411                         }
3412
3413                         case STATEMENT_LABEL: {
3414                                 const label_statement_t *const label_stmt = &stmt->label;
3415                                 count += count_decls_in_stmts(label_stmt->label_statement);
3416                                 break;
3417                         }
3418
3419                         case STATEMENT_WHILE: {
3420                                 const while_statement_t *const while_stmt = &stmt->whiles;
3421                                 count += count_decls_in_expression(while_stmt->condition);
3422                                 count += count_decls_in_stmts(while_stmt->body);
3423                                 break;
3424                         }
3425
3426                         case STATEMENT_DO_WHILE: {
3427                                 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
3428                                 count += count_decls_in_expression(do_while_stmt->condition);
3429                                 count += count_decls_in_stmts(do_while_stmt->body);
3430                                 break;
3431                         }
3432
3433                         case STATEMENT_FOR: {
3434                                 const for_statement_t *const for_stmt = &stmt->fors;
3435                                 count += count_local_declarations(for_stmt->context.declarations, NULL);
3436                                 count += count_decls_in_expression(for_stmt->initialisation);
3437                                 count += count_decls_in_expression(for_stmt->condition);
3438                                 count += count_decls_in_expression(for_stmt->step);
3439                                 count += count_decls_in_stmts(for_stmt->body);
3440                                 break;
3441                         }
3442
3443                         case STATEMENT_CASE_LABEL: {
3444                                 const case_label_statement_t *label = &stmt->case_label;
3445                                 count += count_decls_in_expression(label->expression);
3446                                 count += count_decls_in_stmts(label->label_statement);
3447                                 break;
3448                         }
3449
3450                         case STATEMENT_ASM:
3451                         case STATEMENT_BREAK:
3452                         case STATEMENT_CONTINUE:
3453                                 break;
3454
3455                         case STATEMENT_EXPRESSION: {
3456                                 const expression_statement_t *expr_stmt = &stmt->expression;
3457                                 count += count_decls_in_expression(expr_stmt->expression);
3458                                 break;
3459                         }
3460
3461                         case STATEMENT_GOTO:
3462                         case STATEMENT_INVALID:
3463                                 break;
3464
3465                         case STATEMENT_RETURN: {
3466                                 const return_statement_t *ret_stmt = &stmt->returns;
3467                                 count += count_decls_in_expression(ret_stmt->return_value);
3468                                 break;
3469                         }
3470                 }
3471         }
3472         return count;
3473 }
3474
3475 static int get_function_n_local_vars(declaration_t *declaration)
3476 {
3477         int count = 0;
3478
3479         /* count parameters */
3480         count += count_local_declarations(declaration->context.declarations, NULL);
3481
3482         /* count local variables declared in body */
3483         count += count_decls_in_stmts(declaration->init.statement);
3484
3485         return count;
3486 }
3487
3488 static void initialize_function_parameters(declaration_t *declaration)
3489 {
3490         ir_graph        *irg             = current_ir_graph;
3491         ir_node         *args            = get_irg_args(irg);
3492         ir_node         *start_block     = get_irg_start_block(irg);
3493         ir_type         *function_irtype = get_ir_type(declaration->type);
3494
3495         int            n         = 0;
3496         declaration_t *parameter = declaration->context.declarations;
3497         for( ; parameter != NULL; parameter = parameter->next, ++n) {
3498                 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
3499                 type_t *type = skip_typeref(parameter->type);
3500
3501                 bool needs_entity = parameter->address_taken;
3502                 assert(!is_type_array(type));
3503                 if(is_type_compound(type)) {
3504                         needs_entity = true;
3505                 }
3506
3507                 if(needs_entity) {
3508                         ir_entity *entity = get_method_value_param_ent(function_irtype, n);
3509                         ident     *id     = new_id_from_str(parameter->symbol->string);
3510                         set_entity_ident(entity, id);
3511
3512                         parameter->declaration_type
3513                                 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
3514                         parameter->v.entity = entity;
3515                         continue;
3516                 }
3517
3518                 ir_mode *mode = get_ir_mode(parameter->type);
3519                 long     pn   = n;
3520                 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
3521
3522                 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
3523                 parameter->v.value_number   = next_value_number_function;
3524                 ++next_value_number_function;
3525
3526                 set_value(parameter->v.value_number, proj);
3527         }
3528 }
3529
3530 /**
3531  * Handle additional decl modifiers for IR-graphs
3532  *
3533  * @param irg            the IR-graph
3534  * @param dec_modifiers  additional modifiers
3535  */
3536 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
3537 {
3538         if (decl_modifiers & DM_NORETURN) {
3539                 /* TRUE if the declaration includes the Microsoft
3540                    __declspec(noreturn) specifier. */
3541                 set_irg_additional_property(irg, mtp_property_noreturn);
3542         }
3543         if (decl_modifiers & DM_NOTHROW) {
3544                 /* TRUE if the declaration includes the Microsoft
3545                    __declspec(nothrow) specifier. */
3546                 set_irg_additional_property(irg, mtp_property_nothrow);
3547         }
3548         if (decl_modifiers & DM_NAKED) {
3549                 /* TRUE if the declaration includes the Microsoft
3550                    __declspec(naked) specifier. */
3551                 set_irg_additional_property(irg, mtp_property_naked);
3552         }
3553         if (decl_modifiers & DM_FORCEINLINE) {
3554                 /* TRUE if the declaration includes the
3555                    Microsoft __forceinline specifier. */
3556                 set_irg_inline_property(irg, irg_inline_forced);
3557         }
3558         if (decl_modifiers & DM_NOINLINE) {
3559                 /* TRUE if the declaration includes the Microsoft
3560                    __declspec(noinline) specifier. */
3561                 set_irg_inline_property(irg, irg_inline_forbidden);
3562         }
3563 }
3564
3565 static void create_function(declaration_t *declaration)
3566 {
3567         ir_entity *function_entity = get_function_entity(declaration);
3568
3569         if(declaration->init.statement == NULL)
3570                 return;
3571
3572         current_function_decl = declaration;
3573         current_function_name = NULL;
3574
3575         assert(imature_blocks == NULL);
3576         imature_blocks = NEW_ARR_F(ir_node*, 0);
3577
3578         int       n_local_vars = get_function_n_local_vars(declaration);
3579         ir_graph *irg          = new_ir_graph(function_entity, n_local_vars);
3580         ir_node  *first_block  = get_cur_block();
3581
3582         /* set inline flags */
3583         if (declaration->is_inline)
3584         set_irg_inline_property(irg, irg_inline_recomended);
3585     handle_decl_modifier_irg(irg, declaration->decl_modifiers);
3586
3587         next_value_number_function = 0;
3588         initialize_function_parameters(declaration);
3589
3590         statement_to_firm(declaration->init.statement);
3591
3592         ir_node *end_block = get_irg_end_block(irg);
3593
3594         /* do we have a return statement yet? */
3595         if(get_cur_block() != NULL) {
3596                 type_t *type = skip_typeref(declaration->type);
3597                 assert(is_type_function(type));
3598                 const function_type_t *func_type   = &type->function;
3599                 const type_t          *return_type
3600                         = skip_typeref(func_type->return_type);
3601
3602                 ir_node *ret;
3603                 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
3604                         ret = new_Return(get_store(), 0, NULL);
3605                 } else {
3606                         ir_mode *mode;
3607                         if(is_type_scalar(return_type)) {
3608                                 mode = get_ir_mode(func_type->return_type);
3609                         } else {
3610                                 mode = mode_P_data;
3611                         }
3612
3613                         ir_node *in[1];
3614                         /* §5.1.2.2.3 main implicitly returns 0 */
3615                         if (strcmp(declaration->symbol->string, "main") == 0) {
3616                                 in[0] = new_Const(mode, get_mode_null(mode));
3617                         } else {
3618                                 in[0] = new_Unknown(mode);
3619                         }
3620                         ret = new_Return(get_store(), 1, in);
3621                 }
3622                 add_immBlock_pred(end_block, ret);
3623         }
3624
3625         for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
3626                 mature_immBlock(imature_blocks[i]);
3627         }
3628         DEL_ARR_F(imature_blocks);
3629         imature_blocks = NULL;
3630
3631         mature_immBlock(first_block);
3632         mature_immBlock(end_block);
3633
3634         irg_finalize_cons(irg);
3635
3636         /* finalize the frame type */
3637         ir_type *frame_type = get_irg_frame_type(irg);
3638         int      n          = get_compound_n_members(frame_type);
3639         int      align_all  = 4;
3640         int      offset     = 0;
3641         for(int i = 0; i < n; ++i) {
3642                 ir_entity *entity      = get_compound_member(frame_type, i);
3643                 ir_type   *entity_type = get_entity_type(entity);
3644
3645                 int align = get_type_alignment_bytes(entity_type);
3646                 if(align > align_all)
3647                         align_all = align;
3648                 int misalign = 0;
3649                 if(align > 0) {
3650                         misalign  = offset % align;
3651                         if(misalign > 0) {
3652                                 offset += align - misalign;
3653                         }
3654                 }
3655
3656                 set_entity_offset(entity, offset);
3657                 offset += get_type_size_bytes(entity_type);
3658         }
3659         set_type_size_bytes(frame_type, offset);
3660         set_type_alignment_bytes(frame_type, align_all);
3661         set_type_state(frame_type, layout_fixed);
3662
3663         irg_vrfy(irg);
3664 }
3665
3666 static void create_global_variable(declaration_t *declaration)
3667 {
3668         ir_visibility  vis;
3669         ir_type       *var_type;
3670         switch ((storage_class_tag_t)declaration->storage_class) {
3671                 case STORAGE_CLASS_STATIC:
3672                         vis = visibility_local;
3673                         goto global_var;
3674
3675                 case STORAGE_CLASS_EXTERN:
3676                         vis = visibility_external_allocated;
3677                         goto global_var;
3678
3679                 case STORAGE_CLASS_NONE:
3680                         vis = visibility_external_visible;
3681                         goto global_var;
3682
3683                 case STORAGE_CLASS_THREAD:
3684                         vis = visibility_external_visible;
3685                         goto tls_var;
3686
3687                 case STORAGE_CLASS_THREAD_EXTERN:
3688                         vis = visibility_external_allocated;
3689                         goto tls_var;
3690
3691                 case STORAGE_CLASS_THREAD_STATIC:
3692                         vis = visibility_local;
3693                         goto tls_var;
3694
3695 tls_var:
3696                         var_type = get_tls_type();
3697                         goto create_var;
3698
3699 global_var:
3700                         var_type = get_glob_type();
3701                         goto create_var;
3702
3703 create_var:
3704                         create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
3705                                                   var_type);
3706                         set_entity_visibility(declaration->v.entity, vis);
3707
3708                         current_ir_graph = get_const_code_irg();
3709                         create_initializer(declaration);
3710                         return;
3711
3712                 case STORAGE_CLASS_TYPEDEF:
3713                 case STORAGE_CLASS_AUTO:
3714                 case STORAGE_CLASS_REGISTER:
3715                 case STORAGE_CLASS_ENUM_ENTRY:
3716                         break;
3717         }
3718         panic("Invalid storage class for global variable");
3719 }
3720
3721 static void context_to_firm(context_t *context)
3722 {
3723         /* first pass: create declarations */
3724         declaration_t *declaration = context->declarations;
3725         for( ; declaration != NULL; declaration = declaration->next) {
3726                 if(declaration->namespc != NAMESPACE_NORMAL)
3727                         continue;
3728                 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3729                                 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3730                         continue;
3731                 if(declaration->symbol == NULL)
3732                         continue;
3733
3734                 type_t *type = skip_typeref(declaration->type);
3735                 if(is_type_function(type)) {
3736                         get_function_entity(declaration);
3737                 } else {
3738                         create_global_variable(declaration);
3739                 }
3740         }
3741
3742         /* second pass: create code */
3743         declaration = context->declarations;
3744         for( ; declaration != NULL; declaration = declaration->next) {
3745                 if(declaration->namespc != NAMESPACE_NORMAL)
3746                         continue;
3747                 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3748                                 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3749                         continue;
3750                 if(declaration->symbol == NULL)
3751                         continue;
3752
3753                 type_t *type = declaration->type;
3754                 if(type->kind != TYPE_FUNCTION)
3755                         continue;
3756
3757                 create_function(declaration);
3758         }
3759 }
3760
3761 void init_ast2firm(void)
3762 {
3763         obstack_init(&asm_obst);
3764         init_atomic_modes();
3765
3766         /* create idents for all known runtime functions */
3767         for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
3768                 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
3769         }
3770 }
3771
3772 void exit_ast2firm(void)
3773 {
3774         obstack_free(&asm_obst, NULL);
3775 }
3776
3777 void translation_unit_to_firm(translation_unit_t *unit)
3778 {
3779         type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
3780         type_void       = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
3781         type_int        = make_atomic_type(ATOMIC_TYPE_INT,  TYPE_QUALIFIER_NONE);
3782
3783         ir_type_int        = get_ir_type(type_int);
3784         ir_type_const_char = get_ir_type(type_const_char);
3785         ir_type_wchar_t    = get_ir_type(type_wchar_t);
3786         ir_type_void       = get_ir_type(type_int); /* we don't have a real void
3787                                                        type in firm */
3788
3789         type_void->base.firm_type = ir_type_void;
3790
3791         /* just to be sure */
3792         continue_label      = NULL;
3793         break_label         = NULL;
3794         current_switch_cond = NULL;
3795
3796         context_to_firm(&unit->context);
3797 }