2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm.h>
27 #include <libfirm/adt/obst.h>
31 #include "adt/error.h"
32 #include "adt/array.h"
38 #include "diagnostic.h"
39 #include "lang_features.h"
41 #include "driver/firm_opt.h"
42 #include "driver/firm_cmdline.h"
44 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
46 static ir_type *ir_type_const_char;
47 static ir_type *ir_type_wchar_t;
48 static ir_type *ir_type_void;
49 static ir_type *ir_type_int;
51 static type_t *type_const_char;
53 static int next_value_number_function;
54 static ir_node *continue_label;
55 static ir_node *break_label;
56 static ir_node *current_switch_cond;
57 static bool saw_default_label;
58 static ir_node **imature_blocks;
60 static const declaration_t *current_function_decl;
61 static ir_node *current_function_name;
62 static ir_node *current_funcsig;
64 static struct obstack asm_obst;
66 typedef enum declaration_kind_t {
67 DECLARATION_KIND_UNKNOWN,
68 DECLARATION_KIND_FUNCTION,
69 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
70 DECLARATION_KIND_GLOBAL_VARIABLE,
71 DECLARATION_KIND_LOCAL_VARIABLE,
72 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
73 DECLARATION_KIND_COMPOUND_MEMBER,
74 DECLARATION_KIND_LABEL_BLOCK,
75 DECLARATION_KIND_ENUM_ENTRY
78 static ir_type *get_ir_type(type_t *type);
79 static int count_decls_in_stmts(const statement_t *stmt);
81 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
83 const declaration_t *declaration = get_irg_loc_description(irg, pos);
85 warningf(&declaration->source_position,
86 "variable '%#T' might be used uninitialized",
87 declaration->type, declaration->symbol);
88 return new_r_Unknown(irg, mode);
91 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
93 const source_position_t *pos = (const source_position_t*) dbg;
96 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
100 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
102 const source_position_t *pos = (const source_position_t*) dbg;
107 return pos->input_name;
110 static dbg_info *get_dbg_info(const source_position_t *pos)
112 return (dbg_info*) pos;
115 static unsigned unique_id = 0;
117 static ident *unique_ident(const char *tag)
121 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
123 return new_id_from_str(buf);
126 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
128 static ir_mode *mode_int, *mode_uint;
130 static ir_node *expression_to_firm(const expression_t *expression);
131 static inline ir_mode *get_ir_mode(type_t *type);
133 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
135 unsigned flags = get_atomic_type_flags(kind);
136 unsigned size = get_atomic_type_size(kind);
137 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
138 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
141 unsigned bit_size = size * 8;
142 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
143 mode_arithmetic arithmetic;
144 unsigned modulo_shift;
146 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
147 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
148 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
149 sort = irms_int_number;
150 arithmetic = irma_twos_complement;
151 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
153 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
154 snprintf(name, sizeof(name), "f%d", bit_size);
155 sort = irms_float_number;
156 arithmetic = irma_ieee754;
159 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
167 * Initialises the atomic modes depending on the machine size.
169 static void init_atomic_modes(void)
171 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
172 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
174 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
175 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
177 /* there's no real void type in firm */
178 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
180 /* initialize pointer modes */
182 mode_sort sort = irms_reference;
183 unsigned bit_size = machine_size;
185 mode_arithmetic arithmetic = irma_twos_complement;
186 unsigned modulo_shift
187 = bit_size < machine_size ? machine_size : bit_size;
189 snprintf(name, sizeof(name), "p%d", machine_size);
190 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
193 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
194 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
196 /* Hmm, pointers should be machine size */
197 set_modeP_data(ptr_mode);
198 set_modeP_code(ptr_mode);
201 static unsigned get_compound_type_size(compound_type_t *type)
203 ir_type *irtype = get_ir_type((type_t*) type);
204 return get_type_size_bytes(irtype);
207 static unsigned get_array_type_size(array_type_t *type)
209 assert(!type->is_vla);
210 ir_type *irtype = get_ir_type((type_t*) type);
211 return get_type_size_bytes(irtype);
215 static unsigned get_type_size_const(type_t *type)
217 type = skip_typeref(type);
221 panic("error type occured");
223 return get_atomic_type_size(type->atomic.akind);
225 return 2 * get_atomic_type_size(type->complex.akind);
227 return get_atomic_type_size(type->imaginary.akind);
229 return get_mode_size_bytes(mode_int);
230 case TYPE_COMPOUND_UNION:
231 case TYPE_COMPOUND_STRUCT:
232 return get_compound_type_size(&type->compound);
234 /* just a pointer to the function */
235 return get_mode_size_bytes(mode_P_code);
237 return get_mode_size_bytes(mode_P_data);
239 return get_array_type_size(&type->array);
241 return get_type_size_const(type->builtin.real_type);
243 panic("type size of bitfield request");
249 panic("Trying to determine size of invalid type");
252 static ir_node *get_type_size(type_t *type)
254 type = skip_typeref(type);
256 if(is_type_array(type) && type->array.is_vla) {
257 ir_node *size_node = type->array.size_node;
258 if(size_node == NULL) {
259 size_node = expression_to_firm(type->array.size_expression);
260 assert(!is_Const(size_node));
261 type->array.size_node = size_node;
264 ir_node *elem_size = get_type_size(type->array.element_type);
265 ir_mode *mode = get_irn_mode(size_node);
266 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
270 ir_mode *mode = get_ir_mode(type_size_t);
272 sym.type_p = get_ir_type(type);
273 return new_SymConst(mode, sym, symconst_type_size);
276 static unsigned count_parameters(const function_type_t *function_type)
280 function_parameter_t *parameter = function_type->parameters;
281 for ( ; parameter != NULL; parameter = parameter->next) {
289 * Creates a Firm type for an atomic type
291 static ir_type *create_atomic_type(const atomic_type_t *type)
293 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
294 atomic_type_kind_t kind = type->akind;
295 ir_mode *mode = _atomic_modes[kind];
296 ident *id = get_mode_ident(mode);
297 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
299 set_type_alignment_bytes(irtype, type->base.alignment);
305 * Creates a Firm type for a complex type
307 static ir_type *create_complex_type(const complex_type_t *type)
309 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
310 atomic_type_kind_t kind = type->akind;
311 ir_mode *mode = _atomic_modes[kind];
312 ident *id = get_mode_ident(mode);
314 /* FIXME: finish the array */
319 * Creates a Firm type for an imaginary type
321 static ir_type *create_imaginary_type(const imaginary_type_t *type)
323 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
324 atomic_type_kind_t kind = type->akind;
325 ir_mode *mode = _atomic_modes[kind];
326 ident *id = get_mode_ident(mode);
327 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
329 set_type_alignment_bytes(irtype, type->base.alignment);
334 static ir_type *create_method_type(const function_type_t *function_type)
336 type_t *return_type = function_type->return_type;
338 ident *id = unique_ident("functiontype");
339 int n_parameters = count_parameters(function_type);
340 int n_results = return_type == type_void ? 0 : 1;
341 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
342 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
344 if(return_type != type_void) {
345 ir_type *restype = get_ir_type(return_type);
346 set_method_res_type(irtype, 0, restype);
349 function_parameter_t *parameter = function_type->parameters;
351 for( ; parameter != NULL; parameter = parameter->next) {
352 ir_type *p_irtype = get_ir_type(parameter->type);
353 set_method_param_type(irtype, n, p_irtype);
357 if(function_type->variadic || function_type->unspecified_parameters) {
358 set_method_variadicity(irtype, variadicity_variadic);
364 static ir_type *create_pointer_type(pointer_type_t *type)
366 type_t *points_to = type->points_to;
367 ir_type *ir_points_to;
368 /* Avoid endless recursion if the points_to type contains this poiner type
369 * again (might be a struct). We therefore first create a void* pointer
370 * and then set the real points_to type
372 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
373 ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"),
374 ir_type_void, mode_P_data, dbgi);
375 type->base.firm_type = ir_type;
377 ir_points_to = get_ir_type(points_to);
378 set_pointer_points_to_type(ir_type, ir_points_to);
383 static ir_type *create_array_type(array_type_t *type)
385 type_t *element_type = type->element_type;
386 ir_type *ir_element_type = get_ir_type(element_type);
388 ident *id = unique_ident("array");
389 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
390 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
392 const int align = get_type_alignment_bytes(ir_element_type);
393 set_type_alignment_bytes(ir_type, align);
395 if(type->size_constant) {
396 int n_elements = type->size;
398 set_array_bounds_int(ir_type, 0, 0, n_elements);
400 size_t elemsize = get_type_size_bytes(ir_element_type);
401 if(elemsize % align > 0) {
402 elemsize += align - (elemsize % align);
404 set_type_size_bytes(ir_type, n_elements * elemsize);
406 set_array_lower_bound_int(ir_type, 0, 0);
408 set_type_state(ir_type, layout_fixed);
414 * Return the signed integer type of size bits.
416 * @param size the size
418 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
421 static ir_mode *s_modes[64 + 1] = {NULL, };
425 if (size <= 0 || size > 64)
428 mode = s_modes[size];
432 snprintf(name, sizeof(name), "bf_I%u", size);
433 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
434 size <= 32 ? 32 : size );
435 s_modes[size] = mode;
439 snprintf(name, sizeof(name), "I%u", size);
440 ident *id = new_id_from_str(name);
441 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
442 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
443 set_primitive_base_type(res, base_tp);
449 * Return the unsigned integer type of size bits.
451 * @param size the size
453 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
456 static ir_mode *u_modes[64 + 1] = {NULL, };
460 if (size <= 0 || size > 64)
463 mode = u_modes[size];
467 snprintf(name, sizeof(name), "bf_U%u", size);
468 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
469 size <= 32 ? 32 : size );
470 u_modes[size] = mode;
475 snprintf(name, sizeof(name), "U%u", size);
476 ident *id = new_id_from_str(name);
477 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
478 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
479 set_primitive_base_type(res, base_tp);
484 static ir_type *create_bitfield_type(bitfield_type_t *const type)
486 type_t *base = skip_typeref(type->base_type);
487 assert(base->kind == TYPE_ATOMIC);
488 ir_type *irbase = get_ir_type(base);
490 unsigned size = fold_constant(type->size);
492 assert(!is_type_float(base));
493 if(is_type_signed(base)) {
494 return get_signed_int_type_for_bit_size(irbase, size);
496 return get_unsigned_int_type_for_bit_size(irbase, size);
500 #define INVALID_TYPE ((ir_type_ptr)-1)
502 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
503 size_t *outer_offset, size_t *outer_align);
505 static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype,
506 size_t *outer_offset, size_t *outer_align)
508 declaration_t *declaration = type->declaration;
509 if(declaration->v.irtype != NULL) {
510 return declaration->v.irtype;
513 size_t align_all = 1;
515 size_t bit_offset = 0;
517 symbol_t *symbol = declaration->symbol;
520 id = unique_ident(symbol->string);
522 id = unique_ident("__anonymous_struct");
524 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
526 irtype = new_d_type_struct(id, dbgi);
528 declaration->v.irtype = irtype;
529 type->base.firm_type = irtype;
531 offset = *outer_offset;
532 align_all = *outer_align;
535 declaration_t *entry = declaration->scope.declarations;
536 for( ; entry != NULL; entry = entry->next) {
537 if(entry->namespc != NAMESPACE_NORMAL)
540 symbol_t *symbol = entry->symbol;
541 type_t *entry_type = skip_typeref(entry->type);
542 dbg_info *dbgi = get_dbg_info(&entry->source_position);
545 ident = new_id_from_str(symbol->string);
547 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
548 create_struct_type(&entry_type->compound, irtype, &offset,
551 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
552 create_union_type(&entry_type->compound, irtype, &offset,
556 assert(entry_type->kind == TYPE_BITFIELD);
558 ident = unique_ident("anon");
561 ir_type *base_irtype;
562 if(entry_type->kind == TYPE_BITFIELD) {
563 base_irtype = get_ir_type(entry_type->bitfield.base_type);
565 base_irtype = get_ir_type(entry_type);
568 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
569 size_t misalign = offset % entry_alignment;
571 ir_type *entry_irtype = get_ir_type(entry_type);
572 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
575 size_t bits_remainder;
576 if(entry_type->kind == TYPE_BITFIELD) {
577 size_t size_bits = fold_constant(entry_type->bitfield.size);
578 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
580 if(size_bits > rest_size_bits) {
581 /* start a new bucket */
582 offset += entry_alignment - misalign;
588 /* put into current bucket */
589 base = offset - misalign;
590 bits_remainder = misalign * 8 + bit_offset;
593 offset += size_bits / 8;
594 bit_offset = bit_offset + (size_bits % 8);
596 size_t entry_size = get_type_size_bytes(base_irtype);
597 if(misalign > 0 || bit_offset > 0)
598 offset += entry_alignment - misalign;
602 offset += entry_size;
606 if(entry_alignment > align_all) {
607 if(entry_alignment % align_all != 0) {
608 panic("uneven alignments not supported yet");
610 align_all = entry_alignment;
613 set_entity_offset(entity, base);
614 set_entity_offset_bits_remainder(entity,
615 (unsigned char) bits_remainder);
616 //add_struct_member(irtype, entity);
617 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
618 assert(entry->v.entity == NULL);
619 entry->v.entity = entity;
622 size_t misalign = offset % align_all;
623 if(misalign > 0 || bit_offset > 0) {
624 offset += align_all - misalign;
627 if(outer_offset != NULL) {
628 *outer_offset = offset;
629 *outer_align = align_all;
631 set_type_alignment_bytes(irtype, align_all);
632 set_type_size_bytes(irtype, offset);
633 set_type_state(irtype, layout_fixed);
639 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
640 size_t *outer_offset, size_t *outer_align)
642 declaration_t *declaration = type->declaration;
643 if(declaration->v.irtype != NULL) {
644 return declaration->v.irtype;
647 size_t align_all = 1;
652 symbol_t *symbol = declaration->symbol;
655 id = unique_ident(symbol->string);
657 id = unique_ident("__anonymous_union");
659 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
661 irtype = new_d_type_union(id, dbgi);
663 declaration->v.irtype = irtype;
664 type->base.firm_type = irtype;
666 offset = *outer_offset;
667 align_all = *outer_align;
670 type->base.firm_type = irtype;
672 declaration_t *entry = declaration->scope.declarations;
673 for( ; entry != NULL; entry = entry->next) {
674 if(entry->namespc != NAMESPACE_NORMAL)
677 symbol_t *symbol = entry->symbol;
678 type_t *entry_type = skip_typeref(entry->type);
679 ir_type *entry_ir_type = get_ir_type(entry_type);
683 ident = new_id_from_str(entry->symbol->string);
685 size_t offs = offset;
686 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
687 create_struct_type(&entry_type->compound, irtype, &offs,
690 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
691 create_union_type(&entry_type->compound, irtype, &offs,
695 panic("anonymous union member must be struct or union");
697 size_t entry_size = offs - offset;
698 if(entry_size > size) {
701 ident = unique_ident("anon");
704 size_t entry_size = get_type_size_bytes(entry_ir_type);
705 size_t entry_alignment = get_type_alignment_bytes(entry_ir_type);
707 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
708 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
710 //add_union_member(irtype, entity);
711 set_entity_offset(entity, 0);
712 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
713 assert(entry->v.entity == NULL);
714 entry->v.entity = entity;
716 if(entry_size > size) {
719 if(entry_alignment > align_all) {
720 if(entry_alignment % align_all != 0) {
721 panic("Uneven alignments not supported yet");
723 align_all = entry_alignment;
727 if(outer_offset != NULL) {
728 assert(*outer_offset == offset);
730 size_t misalign = offset % align_all;
732 size += align_all - misalign;
733 *outer_offset += size;
735 if(align_all > *outer_align) {
736 if(align_all % *outer_align != 0) {
737 panic("uneven alignments not supported yet");
739 *outer_align = align_all;
742 set_type_alignment_bytes(irtype, align_all);
743 set_type_size_bytes(irtype, size);
744 set_type_state(irtype, layout_fixed);
745 declaration->v.irtype = irtype;
751 static ir_type *create_enum_type(enum_type_t *const type)
753 type->base.firm_type = ir_type_int;
755 ir_mode *const mode = mode_int;
756 tarval *const one = get_mode_one(mode);
757 tarval * tv_next = get_tarval_null(mode);
759 declaration_t *declaration = type->declaration->next;
760 for (; declaration != NULL; declaration = declaration->next) {
761 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
764 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
766 expression_t *const init = declaration->init.enum_value;
768 ir_node *const cnst = expression_to_firm(init);
769 if (!is_Const(cnst)) {
770 panic("couldn't fold constant");
772 tv_next = get_Const_tarval(cnst);
774 declaration->v.enum_val = tv_next;
775 tv_next = tarval_add(tv_next, one);
781 static ir_type *get_ir_type(type_t *type)
783 assert(type != NULL);
785 type = skip_typeref(type);
787 if(type->base.firm_type != NULL) {
788 assert(type->base.firm_type != INVALID_TYPE);
789 return type->base.firm_type;
792 ir_type *firm_type = NULL;
795 panic("error type occurred");
797 firm_type = create_atomic_type(&type->atomic);
800 firm_type = create_complex_type(&type->complex);
803 firm_type = create_imaginary_type(&type->imaginary);
806 firm_type = create_method_type(&type->function);
809 firm_type = create_pointer_type(&type->pointer);
812 firm_type = create_array_type(&type->array);
814 case TYPE_COMPOUND_STRUCT:
815 firm_type = create_struct_type(&type->compound, NULL, NULL, NULL);
817 case TYPE_COMPOUND_UNION:
818 firm_type = create_union_type(&type->compound, NULL, NULL, NULL);
821 firm_type = create_enum_type(&type->enumt);
824 firm_type = get_ir_type(type->builtin.real_type);
827 firm_type = create_bitfield_type(&type->bitfield);
835 if(firm_type == NULL)
836 panic("unknown type found");
838 type->base.firm_type = firm_type;
842 static inline ir_mode *get_ir_mode(type_t *type)
844 ir_type *irtype = get_ir_type(type);
846 /* firm doesn't report a mode for arrays somehow... */
847 if(is_Array_type(irtype)) {
851 ir_mode *mode = get_type_mode(irtype);
852 assert(mode != NULL);
856 static ident *predef_idents[rts_max];
858 /** Names of the runtime functions. */
859 static const struct {
860 int id; /**< the rts id */
861 int n_res; /**< number of return values */
862 const char *name; /**< the name of the rts function */
863 int n_params; /**< number of parameters */
864 unsigned flags; /**< language flags */
866 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
867 { rts_abort, 0, "abort", 0, _C89 },
868 { rts_abs, 1, "abs", 1, _C89 },
869 { rts_labs, 1, "labs", 1, _C89 },
870 { rts_llabs, 1, "llabs", 1, _C99 },
871 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
873 { rts_fabs, 1, "fabs", 1, _C89 },
874 { rts_sqrt, 1, "sqrt", 1, _C89 },
875 { rts_cbrt, 1, "cbrt", 1, _C99 },
876 { rts_exp, 1, "exp", 1, _C89 },
877 { rts_exp2, 1, "exp2", 1, _C89 },
878 { rts_exp10, 1, "exp10", 1, _GNUC },
879 { rts_log, 1, "log", 1, _C89 },
880 { rts_log2, 1, "log2", 1, _C89 },
881 { rts_log10, 1, "log10", 1, _C89 },
882 { rts_pow, 1, "pow", 2, _C89 },
883 { rts_sin, 1, "sin", 1, _C89 },
884 { rts_cos, 1, "cos", 1, _C89 },
885 { rts_tan, 1, "tan", 1, _C89 },
886 { rts_asin, 1, "asin", 1, _C89 },
887 { rts_acos, 1, "acos", 1, _C89 },
888 { rts_atan, 1, "atan", 1, _C89 },
889 { rts_sinh, 1, "sinh", 1, _C89 },
890 { rts_cosh, 1, "cosh", 1, _C89 },
891 { rts_tanh, 1, "tanh", 1, _C89 },
893 { rts_fabsf, 1, "fabsf", 1, _C99 },
894 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
895 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
896 { rts_expf, 1, "expf", 1, _C99 },
897 { rts_exp2f, 1, "exp2f", 1, _C99 },
898 { rts_exp10f, 1, "exp10f", 1, _GNUC },
899 { rts_logf, 1, "logf", 1, _C99 },
900 { rts_log2f, 1, "log2f", 1, _C99 },
901 { rts_log10f, 1, "log10f", 1, _C99 },
902 { rts_powf, 1, "powf", 2, _C99 },
903 { rts_sinf, 1, "sinf", 1, _C99 },
904 { rts_cosf, 1, "cosf", 1, _C99 },
905 { rts_tanf, 1, "tanf", 1, _C99 },
906 { rts_asinf, 1, "asinf", 1, _C99 },
907 { rts_acosf, 1, "acosf", 1, _C99 },
908 { rts_atanf, 1, "atanf", 1, _C99 },
909 { rts_sinhf, 1, "sinhf", 1, _C99 },
910 { rts_coshf, 1, "coshf", 1, _C99 },
911 { rts_tanhf, 1, "tanhf", 1, _C99 },
913 { rts_fabsl, 1, "fabsl", 1, _C99 },
914 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
915 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
916 { rts_expl, 1, "expl", 1, _C99 },
917 { rts_exp2l, 1, "exp2l", 1, _C99 },
918 { rts_exp10l, 1, "exp10l", 1, _GNUC },
919 { rts_logl, 1, "logl", 1, _C99 },
920 { rts_log2l, 1, "log2l", 1, _C99 },
921 { rts_log10l, 1, "log10l", 1, _C99 },
922 { rts_powl, 1, "powl", 2, _C99 },
923 { rts_sinl, 1, "sinl", 1, _C99 },
924 { rts_cosl, 1, "cosl", 1, _C99 },
925 { rts_tanl, 1, "tanl", 1, _C99 },
926 { rts_asinl, 1, "asinl", 1, _C99 },
927 { rts_acosl, 1, "acosl", 1, _C99 },
928 { rts_atanl, 1, "atanl", 1, _C99 },
929 { rts_sinhl, 1, "sinhl", 1, _C99 },
930 { rts_coshl, 1, "coshl", 1, _C99 },
931 { rts_tanhl, 1, "tanhl", 1, _C99 },
933 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
934 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
935 { rts_strcmp, 1, "strcmp", 2, _C89 },
936 { rts_strncmp, 1, "strncmp", 3, _C89 }
940 * Mangles an entity linker (ld) name for win32 usage.
942 * @param ent the entity to be mangled
943 * @param decl_modifiers the set of modifiers for this entity
945 static ir_ident_ptr decorate_win32(ir_entity_ptr ent, decl_modifiers_t decl_modifiers) {
948 if (is_Method_type(get_entity_type(ent)))
949 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
951 /* always add an underscore in win32 */
952 id = mangle(new_id_from_chars("_", 1), get_entity_ident(ent));
955 if (decl_modifiers & DM_DLLIMPORT) {
956 /* add prefix for imported symbols */
957 id = mangle(new_id_from_chars("__imp_", 6), id);
963 * Mangles an entity linker (ld) name from a declaration.
965 * @param ent the entity to be mangled
966 * @param declaration the declaration
968 static void mangle_ent_from_decl(ir_entity *ent, declaration_t *declaration)
972 if (firm_opt.os_support == OS_SUPPORT_MINGW)
973 id = decorate_win32(ent, declaration->decl_modifiers);
975 id = get_entity_ident(ent);
977 set_entity_ld_ident(ent, id);
980 static ir_entity* get_function_entity(declaration_t *declaration)
982 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
983 return declaration->v.entity;
984 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
986 symbol_t *symbol = declaration->symbol;
987 ident *id = new_id_from_str(symbol->string);
989 ir_type *global_type = get_glob_type();
990 ir_type *ir_type_method = get_ir_type(declaration->type);
991 assert(is_Method_type(ir_type_method));
993 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
994 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
995 mangle_ent_from_decl(entity, declaration);
996 if(declaration->storage_class == STORAGE_CLASS_STATIC
997 || declaration->is_inline) {
998 set_entity_visibility(entity, visibility_local);
999 } else if(declaration->init.statement != NULL) {
1000 set_entity_visibility(entity, visibility_external_visible);
1002 set_entity_visibility(entity, visibility_external_allocated);
1004 /* We should check for file scope here, but as long as we compile C only
1005 this is not needed. */
1006 int n_params = get_method_n_params(ir_type_method);
1007 int n_res = get_method_n_ress(ir_type_method);
1010 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
1011 /* found abort(), store for later */
1015 if (! firm_opt.freestanding) {
1016 /* check for a known runtime function */
1017 for (i = 0; i < rts_max; ++i) {
1018 /* ignore those rts functions not necessary needed for current mode */
1019 if ((c_mode & rts_data[i].flags) == 0)
1021 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
1022 id == predef_idents[rts_data[i].id])
1023 rts_entities[rts_data[i].id] = entity;
1028 set_entity_allocation(entity, allocation_static);
1030 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1031 declaration->v.entity = entity;
1036 static ir_node *const_to_firm(const const_expression_t *cnst)
1038 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1039 ir_mode *mode = get_ir_mode(cnst->base.type);
1044 if(mode_is_float(mode)) {
1045 tv = new_tarval_from_double(cnst->v.float_value, mode);
1047 if(mode_is_signed(mode)) {
1048 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1050 len = snprintf(buf, sizeof(buf), "%llu",
1051 (unsigned long long) cnst->v.int_value);
1053 tv = new_tarval_from_str(buf, len, mode);
1056 return new_d_Const(dbgi, mode, tv);
1059 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1061 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1062 ir_mode *mode = get_ir_mode(cnst->base.type);
1064 long long int v = 0;
1065 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1066 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1069 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1070 tarval *tv = new_tarval_from_str(buf, len, mode);
1072 return new_d_Const(dbgi, mode, tv);
1075 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1077 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1078 ir_mode *mode = get_ir_mode(cnst->base.type);
1080 long long int v = cnst->v.wide_character.begin[0];
1083 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1084 tarval *tv = new_tarval_from_str(buf, len, mode);
1086 return new_d_Const(dbgi, mode, tv);
1089 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1092 assert(entity != NULL);
1093 union symconst_symbol sym;
1094 sym.entity_p = entity;
1095 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1098 static ir_node *string_to_firm(const source_position_t *const src_pos,
1099 const char *const id_prefix,
1100 const string_t *const value)
1102 ir_type *const global_type = get_glob_type();
1103 dbg_info *const dbgi = get_dbg_info(src_pos);
1104 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1105 ir_type_const_char, dbgi);
1107 ident *const id = unique_ident(id_prefix);
1108 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1109 set_entity_ld_ident(entity, id);
1110 set_entity_variability(entity, variability_constant);
1111 set_entity_allocation(entity, allocation_static);
1113 ir_type *const elem_type = ir_type_const_char;
1114 ir_mode *const mode = get_type_mode(elem_type);
1116 const char* const string = value->begin;
1117 const size_t slen = value->size;
1119 set_array_lower_bound_int(type, 0, 0);
1120 set_array_upper_bound_int(type, 0, slen);
1121 set_type_size_bytes(type, slen);
1122 set_type_state(type, layout_fixed);
1124 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1125 for(size_t i = 0; i < slen; ++i) {
1126 tvs[i] = new_tarval_from_long(string[i], mode);
1129 set_array_entity_values(entity, tvs, slen);
1132 return create_symconst(dbgi, mode_P_data, entity);
1135 static ir_node *string_literal_to_firm(
1136 const string_literal_expression_t* literal)
1138 return string_to_firm(&literal->base.source_position, "Lstr",
1142 static ir_node *wide_string_literal_to_firm(
1143 const wide_string_literal_expression_t* const literal)
1145 ir_type *const global_type = get_glob_type();
1146 ir_type *const elem_type = ir_type_wchar_t;
1147 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1148 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1151 ident *const id = unique_ident("Lstr");
1152 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1153 set_entity_ld_ident(entity, id);
1154 set_entity_variability(entity, variability_constant);
1155 set_entity_allocation(entity, allocation_static);
1157 ir_mode *const mode = get_type_mode(elem_type);
1159 const wchar_rep_t *const string = literal->value.begin;
1160 const size_t slen = literal->value.size;
1162 set_array_lower_bound_int(type, 0, 0);
1163 set_array_upper_bound_int(type, 0, slen);
1164 set_type_size_bytes(type, slen);
1165 set_type_state(type, layout_fixed);
1167 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1168 for(size_t i = 0; i < slen; ++i) {
1169 tvs[i] = new_tarval_from_long(string[i], mode);
1172 set_array_entity_values(entity, tvs, slen);
1175 return create_symconst(dbgi, mode_P_data, entity);
1178 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1179 dbg_info *const dbgi)
1181 ir_type *irtype = get_ir_type(type);
1182 if (is_compound_type(irtype)
1183 || is_Method_type(irtype)
1184 || is_Array_type(irtype)) {
1188 ir_mode *const mode = get_type_mode(irtype);
1189 ir_node *const memory = get_store();
1190 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1191 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1192 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1194 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1195 set_Load_volatility(load, volatility_is_volatile);
1198 set_store(load_mem);
1202 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1204 ir_mode *mode = get_irn_mode(node);
1206 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1208 if(!mode_is_float(mode))
1211 /* check if there is already a Conv */
1212 if (get_irn_op(node) == op_Conv) {
1213 /* convert it into a strict Conv */
1214 set_Conv_strict(node, 1);
1218 /* otherwise create a new one */
1219 return new_d_strictConv(dbgi, node, mode);
1222 static ir_node *get_global_var_address(dbg_info *const dbgi,
1223 const declaration_t *const decl)
1225 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1227 ir_entity *const entity = decl->v.entity;
1228 switch ((storage_class_tag_t)decl->storage_class) {
1229 case STORAGE_CLASS_THREAD:
1230 case STORAGE_CLASS_THREAD_EXTERN:
1231 case STORAGE_CLASS_THREAD_STATIC: {
1232 ir_node *const no_mem = new_NoMem();
1233 ir_node *const tls = get_irg_tls(current_ir_graph);
1234 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1238 return create_symconst(dbgi, mode_P_data, entity);
1242 /* Returns the correct base address depending on whether it is a parameter or a
1243 * normal local variable */
1244 static ir_node *get_local_frame(ir_entity *const ent)
1246 ir_graph *const irg = current_ir_graph;
1247 const ir_type *const owner = get_entity_owner(ent);
1248 if (owner == get_irg_frame_type(irg)) {
1249 return get_irg_frame(irg);
1251 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1252 return get_irg_value_param_base(irg);
1256 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1258 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1259 declaration_t *declaration = ref->declaration;
1260 type_t *type = skip_typeref(declaration->type);
1262 switch((declaration_kind_t) declaration->declaration_kind) {
1263 case DECLARATION_KIND_UNKNOWN:
1264 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1270 case DECLARATION_KIND_ENUM_ENTRY: {
1271 ir_mode *const mode = get_ir_mode(type);
1272 return new_Const(mode, declaration->v.enum_val);
1275 case DECLARATION_KIND_LOCAL_VARIABLE: {
1276 ir_mode *const mode = get_ir_mode(type);
1277 return get_value(declaration->v.value_number, mode);
1279 case DECLARATION_KIND_FUNCTION: {
1280 ir_mode *const mode = get_ir_mode(type);
1281 return create_symconst(dbgi, mode, declaration->v.entity);
1283 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1284 ir_node *const addr = get_global_var_address(dbgi, declaration);
1285 return deref_address(declaration->type, addr, dbgi);
1288 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1289 ir_entity *entity = declaration->v.entity;
1290 ir_node *frame = get_local_frame(entity);
1291 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1292 return deref_address(declaration->type, sel, dbgi);
1295 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1296 return declaration->v.vla_base;
1298 case DECLARATION_KIND_COMPOUND_MEMBER:
1299 case DECLARATION_KIND_LABEL_BLOCK:
1300 panic("not implemented reference type");
1303 panic("reference to declaration with unknown type found");
1306 static ir_node *reference_addr(const reference_expression_t *ref)
1308 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1309 declaration_t *declaration = ref->declaration;
1311 switch((declaration_kind_t) declaration->declaration_kind) {
1312 case DECLARATION_KIND_UNKNOWN:
1314 case DECLARATION_KIND_LOCAL_VARIABLE:
1315 panic("local variable without entity has no address");
1316 case DECLARATION_KIND_FUNCTION: {
1317 type_t *const type = skip_typeref(ref->base.type);
1318 ir_mode *const mode = get_ir_mode(type);
1319 return create_symconst(dbgi, mode, declaration->v.entity);
1321 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1322 ir_node *const addr = get_global_var_address(dbgi, declaration);
1325 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1326 ir_entity *entity = declaration->v.entity;
1327 ir_node *frame = get_local_frame(entity);
1328 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1333 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1334 return declaration->v.vla_base;
1336 case DECLARATION_KIND_ENUM_ENTRY:
1337 panic("trying to reference enum entry");
1339 case DECLARATION_KIND_COMPOUND_MEMBER:
1340 case DECLARATION_KIND_LABEL_BLOCK:
1341 panic("not implemented reference type");
1344 panic("reference to declaration with unknown type found");
1347 static ir_node *process_builtin_call(const call_expression_t *call)
1349 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1351 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1352 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1354 type_t *type = skip_typeref(builtin->base.type);
1355 assert(is_type_pointer(type));
1357 type_t *function_type = skip_typeref(type->pointer.points_to);
1358 symbol_t *symbol = builtin->symbol;
1360 switch(symbol->ID) {
1361 case T___builtin_alloca: {
1362 if(call->arguments == NULL || call->arguments->next != NULL) {
1363 panic("invalid number of parameters on __builtin_alloca");
1365 expression_t *argument = call->arguments->expression;
1366 ir_node *size = expression_to_firm(argument);
1368 ir_node *store = get_store();
1369 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1371 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1373 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1377 case T___builtin_nan:
1378 case T___builtin_nanf:
1379 case T___builtin_nand: {
1380 /* Ignore string for now... */
1381 assert(is_type_function(function_type));
1382 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1383 tarval *tv = get_mode_NAN(mode);
1384 ir_node *res = new_d_Const(dbgi, mode, tv);
1387 case T___builtin_va_end:
1390 panic("Unsupported builtin found\n");
1394 static ir_node *call_expression_to_firm(const call_expression_t *call)
1396 assert(get_cur_block() != NULL);
1398 expression_t *function = call->function;
1399 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1400 return process_builtin_call(call);
1402 ir_node *callee = expression_to_firm(function);
1404 type_t *type = skip_typeref(function->base.type);
1405 assert(is_type_pointer(type));
1406 pointer_type_t *pointer_type = &type->pointer;
1407 type_t *points_to = skip_typeref(pointer_type->points_to);
1408 assert(is_type_function(points_to));
1409 function_type_t *function_type = &points_to->function;
1411 int n_parameters = 0;
1412 call_argument_t *argument = call->arguments;
1413 for( ; argument != NULL; argument = argument->next) {
1417 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1419 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1420 ir_type *new_method_type = NULL;
1421 if(function_type->variadic || function_type->unspecified_parameters) {
1422 /* we need to construct a new method type matching the call
1424 int n_res = get_method_n_ress(ir_method_type);
1425 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1426 new_method_type = new_d_type_method(unique_ident("calltype"),
1427 n_parameters, n_res, dbgi);
1428 set_method_calling_convention(new_method_type,
1429 get_method_calling_convention(ir_method_type));
1430 set_method_additional_properties(new_method_type,
1431 get_method_additional_properties(ir_method_type));
1433 for(int i = 0; i < n_res; ++i) {
1434 set_method_res_type(new_method_type, i,
1435 get_method_res_type(ir_method_type, i));
1438 ir_node *in[n_parameters];
1440 argument = call->arguments;
1442 for( ; argument != NULL; argument = argument->next) {
1443 expression_t *expression = argument->expression;
1444 ir_node *arg_node = expression_to_firm(expression);
1446 arg_node = do_strict_conv(dbgi, arg_node);
1449 if(new_method_type != NULL) {
1450 ir_type *irtype = get_ir_type(expression->base.type);
1451 set_method_param_type(new_method_type, n, irtype);
1456 assert(n == n_parameters);
1458 if(new_method_type != NULL)
1459 ir_method_type = new_method_type;
1461 ir_node *store = get_store();
1462 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1464 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1467 type_t *return_type = skip_typeref(function_type->return_type);
1468 ir_node *result = NULL;
1470 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1472 if(is_type_scalar(return_type)) {
1473 mode = get_ir_mode(return_type);
1477 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1478 result = new_d_Proj(dbgi, resproj, mode, 0);
1484 static void statement_to_firm(statement_t *statement);
1485 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1487 static ir_node *expression_to_addr(const expression_t *expression);
1488 static void create_condition_evaluation(const expression_t *expression,
1489 ir_node *true_block,
1490 ir_node *false_block);
1492 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1495 value = do_strict_conv(dbgi, value);
1497 ir_node *memory = get_store();
1499 if(is_type_scalar(type)) {
1500 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1501 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1502 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1503 set_Store_volatility(store, volatility_is_volatile);
1504 set_store(store_mem);
1506 ir_type *irtype = get_ir_type(type);
1507 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1508 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1509 set_store(copyb_mem);
1513 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1515 tarval *all_one = get_mode_all_one(mode);
1516 int mode_size = get_mode_size_bits(mode);
1518 assert(offset >= 0 && size >= 0);
1519 assert(offset + size <= mode_size);
1520 if(size == mode_size) {
1524 long shiftr = get_mode_size_bits(mode) - size;
1525 long shiftl = offset;
1526 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1527 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1528 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1529 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1534 static void bitfield_store_to_firm(const unary_expression_t *expression,
1537 expression_t *select = expression->value;
1538 assert(select->kind == EXPR_SELECT);
1539 type_t *type = select->base.type;
1540 assert(type->kind == TYPE_BITFIELD);
1541 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1542 ir_node *addr = expression_to_addr(select);
1544 assert(get_irn_mode(value) == mode);
1546 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1548 /* kill upper bits of value and shift to right position */
1549 ir_entity *entity = select->select.compound_entry->v.entity;
1550 int bitoffset = get_entity_offset_bits_remainder(entity);
1551 ir_type *entity_type = get_entity_type(entity);
1552 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1554 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1555 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1556 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1557 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1558 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1559 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1561 /* load current value */
1562 ir_node *mem = get_store();
1563 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1564 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1565 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1566 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1567 tarval *inv_mask = tarval_not(shift_mask);
1568 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1569 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1571 /* construct new value and store */
1572 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1573 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1574 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1575 set_store(store_mem);
1577 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1578 set_Load_volatility(load, volatility_is_volatile);
1579 set_Store_volatility(store, volatility_is_volatile);
1583 static void set_value_for_expression(const expression_t *expression,
1586 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1587 value = do_strict_conv(dbgi, value);
1589 if(expression->kind == EXPR_REFERENCE) {
1590 const reference_expression_t *ref = &expression->reference;
1592 declaration_t *declaration = ref->declaration;
1593 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1594 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1595 set_value(declaration->v.value_number, value);
1600 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1601 bitfield_store_to_firm(&expression->unary, value);
1605 ir_node *addr = expression_to_addr(expression);
1606 type_t *type = skip_typeref(expression->base.type);
1607 assign_value(dbgi, addr, type, value);
1610 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1612 ir_mode *value_mode = get_irn_mode(value);
1614 if (value_mode == dest_mode || is_Bad(value))
1617 if(dest_mode == mode_b) {
1618 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1619 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1620 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1624 return new_d_Conv(dbgi, value, dest_mode);
1627 static ir_node *create_incdec(const unary_expression_t *expression)
1629 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1630 type_t *type = skip_typeref(expression->base.type);
1631 ir_mode *mode = get_ir_mode(type);
1632 expression_t *value = expression->value;
1634 ir_node *value_node = expression_to_firm(value);
1637 if(is_type_pointer(type)) {
1638 pointer_type_t *pointer_type = &type->pointer;
1639 offset = get_type_size(pointer_type->points_to);
1641 assert(is_type_arithmetic(type));
1642 offset = new_Const(mode, get_mode_one(mode));
1645 switch(expression->base.kind) {
1646 case EXPR_UNARY_POSTFIX_INCREMENT: {
1647 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1648 set_value_for_expression(value, new_value);
1651 case EXPR_UNARY_POSTFIX_DECREMENT: {
1652 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1653 set_value_for_expression(value, new_value);
1656 case EXPR_UNARY_PREFIX_INCREMENT: {
1657 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1658 set_value_for_expression(value, new_value);
1661 case EXPR_UNARY_PREFIX_DECREMENT: {
1662 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1663 set_value_for_expression(value, new_value);
1667 panic("no incdec expr in create_incdec");
1672 static bool is_local_variable(expression_t *expression)
1674 if (expression->kind != EXPR_REFERENCE)
1676 reference_expression_t *ref_expr = &expression->reference;
1677 declaration_t *declaration = ref_expr->declaration;
1678 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1681 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1684 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1685 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1686 case EXPR_BINARY_NOTEQUAL:
1687 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1688 case EXPR_BINARY_ISLESS:
1689 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1690 case EXPR_BINARY_ISLESSEQUAL:
1691 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1692 case EXPR_BINARY_ISGREATER:
1693 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1694 case EXPR_BINARY_ISGREATEREQUAL:
1695 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1696 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1701 panic("trying to get pn_Cmp from non-comparison binexpr type");
1705 * Handle the assume optimizer hint: check if a Confirm
1706 * node can be created.
1708 * @param dbi debug info
1709 * @param expr the IL assume expression
1711 * we support here only some simple cases:
1716 static ir_node *handle_assume_compare(dbg_info *dbi,
1717 const binary_expression_t *expression)
1719 expression_t *op1 = expression->left;
1720 expression_t *op2 = expression->right;
1721 declaration_t *var2, *var = NULL;
1722 ir_node *res = NULL;
1725 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1727 if (is_local_variable(op1) && is_local_variable(op2)) {
1728 var = op1->reference.declaration;
1729 var2 = op2->reference.declaration;
1731 type_t *const type = skip_typeref(var->type);
1732 ir_mode *const mode = get_ir_mode(type);
1734 ir_node *const irn1 = get_value(var->v.value_number, mode);
1735 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1737 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1738 set_value(var2->v.value_number, res);
1740 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1741 set_value(var->v.value_number, res);
1747 if (is_local_variable(op1) && is_constant_expression(op2)) {
1748 var = op1->reference.declaration;
1750 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1751 cmp_val = get_inversed_pnc(cmp_val);
1752 var = op2->reference.declaration;
1757 type_t *const type = skip_typeref(var->type);
1758 ir_mode *const mode = get_ir_mode(type);
1760 res = get_value(var->v.value_number, mode);
1761 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1762 set_value(var->v.value_number, res);
1768 * Handle the assume optimizer hint.
1770 * @param dbi debug info
1771 * @param expr the IL assume expression
1773 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1774 switch(expression->kind) {
1775 case EXPR_BINARY_EQUAL:
1776 case EXPR_BINARY_NOTEQUAL:
1777 case EXPR_BINARY_LESS:
1778 case EXPR_BINARY_LESSEQUAL:
1779 case EXPR_BINARY_GREATER:
1780 case EXPR_BINARY_GREATEREQUAL:
1781 return handle_assume_compare(dbi, &expression->binary);
1787 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1789 expression_t *select = expression->value;
1790 assert(select->kind == EXPR_SELECT);
1792 type_t *type = select->base.type;
1793 assert(type->kind == TYPE_BITFIELD);
1794 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1795 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1796 ir_node *addr = expression_to_addr(select);
1797 ir_node *mem = get_store();
1798 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1799 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1800 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1802 load_res = create_conv(dbgi, load_res, mode_int);
1804 set_store(load_mem);
1806 /* kill upper bits */
1807 ir_entity *entity = select->select.compound_entry->v.entity;
1808 int bitoffset = get_entity_offset_bits_remainder(entity);
1809 ir_type *entity_type = get_entity_type(entity);
1810 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1811 long shift_bitsl = machine_size - bitoffset - bitsize;
1812 assert(shift_bitsl >= 0);
1813 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1814 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1815 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1817 long shift_bitsr = bitoffset + shift_bitsl;
1818 assert(shift_bitsr <= (long) machine_size);
1819 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1820 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1822 if(mode_is_signed(mode)) {
1823 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1825 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1828 return create_conv(dbgi, shiftr, mode);
1831 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1833 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1834 type_t *type = skip_typeref(expression->base.type);
1836 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1837 return expression_to_addr(expression->value);
1839 const expression_t *value = expression->value;
1841 switch(expression->base.kind) {
1842 case EXPR_UNARY_NEGATE: {
1843 ir_node *value_node = expression_to_firm(value);
1844 ir_mode *mode = get_ir_mode(type);
1845 return new_d_Minus(dbgi, value_node, mode);
1847 case EXPR_UNARY_PLUS:
1848 return expression_to_firm(value);
1849 case EXPR_UNARY_BITWISE_NEGATE: {
1850 ir_node *value_node = expression_to_firm(value);
1851 ir_mode *mode = get_ir_mode(type);
1852 return new_d_Not(dbgi, value_node, mode);
1854 case EXPR_UNARY_NOT: {
1855 ir_node *value_node = expression_to_firm(value);
1856 ir_mode *mode = get_ir_mode(type);
1857 if(get_irn_mode(value_node) != mode_b) {
1858 value_node = create_conv(dbgi, value_node, mode_b);
1860 value_node = new_d_Not(dbgi, value_node, mode_b);
1861 if(mode != mode_b) {
1862 value_node = create_conv(dbgi, value_node, mode);
1866 case EXPR_UNARY_DEREFERENCE: {
1867 ir_node *value_node = expression_to_firm(value);
1868 type_t *value_type = skip_typeref(value->base.type);
1869 assert(is_type_pointer(value_type));
1870 type_t *points_to = value_type->pointer.points_to;
1871 return deref_address(points_to, value_node, dbgi);
1873 case EXPR_UNARY_POSTFIX_INCREMENT:
1874 case EXPR_UNARY_POSTFIX_DECREMENT:
1875 case EXPR_UNARY_PREFIX_INCREMENT:
1876 case EXPR_UNARY_PREFIX_DECREMENT:
1877 return create_incdec(expression);
1878 case EXPR_UNARY_CAST: {
1879 ir_node *value_node = expression_to_firm(value);
1880 if(is_type_scalar(type)) {
1881 ir_mode *mode = get_ir_mode(type);
1882 ir_node *node = create_conv(dbgi, value_node, mode);
1883 node = do_strict_conv(dbgi, node);
1886 /* make sure firm type is constructed */
1887 (void) get_ir_type(type);
1891 case EXPR_UNARY_CAST_IMPLICIT: {
1892 ir_node *value_node = expression_to_firm(value);
1893 if(is_type_scalar(type)) {
1894 ir_mode *mode = get_ir_mode(type);
1895 return create_conv(dbgi, value_node, mode);
1900 case EXPR_UNARY_ASSUME:
1901 if(firm_opt.confirm)
1902 return handle_assume(dbgi, value);
1905 case EXPR_UNARY_BITFIELD_EXTRACT:
1906 return bitfield_extract_to_firm(expression);
1911 panic("invalid UNEXPR type found");
1914 static ir_node *produce_condition_result(const expression_t *expression,
1917 ir_mode *mode = get_ir_mode(expression->base.type);
1918 ir_node *cur_block = get_cur_block();
1920 ir_node *one_block = new_immBlock();
1921 ir_node *one = new_Const(mode, get_mode_one(mode));
1922 ir_node *jmp_one = new_d_Jmp(dbgi);
1924 ir_node *zero_block = new_immBlock();
1925 ir_node *zero = new_Const(mode, get_mode_null(mode));
1926 ir_node *jmp_zero = new_d_Jmp(dbgi);
1928 set_cur_block(cur_block);
1929 create_condition_evaluation(expression, one_block, zero_block);
1930 mature_immBlock(one_block);
1931 mature_immBlock(zero_block);
1933 ir_node *common_block = new_immBlock();
1934 add_immBlock_pred(common_block, jmp_one);
1935 add_immBlock_pred(common_block, jmp_zero);
1936 mature_immBlock(common_block);
1938 ir_node *in[2] = { one, zero };
1939 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1944 static ir_node *create_lazy_op(const binary_expression_t *expression)
1946 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1947 type_t *type = expression->base.type;
1948 ir_mode *mode = get_ir_mode(type);
1950 if(is_constant_expression(expression->left)) {
1951 long val = fold_constant(expression->left);
1952 expression_kind_t ekind = expression->base.kind;
1953 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1954 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1955 return expression_to_firm(expression->right);
1957 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1958 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1959 return new_Const(mode, get_mode_one(mode));
1963 return produce_condition_result((const expression_t*) expression, dbgi);
1966 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1967 ir_node *right, ir_mode *mode);
1969 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1970 create_arithmetic_func func)
1972 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1973 ir_node *left = expression_to_firm(expression->left);
1974 ir_node *right = expression_to_firm(expression->right);
1975 type_t *type = expression->right->base.type;
1976 /* be careful with the modes, because in arithmetic assign nodes only
1977 * the right operand has the mode of the arithmetic already */
1978 ir_mode *mode = get_ir_mode(type);
1979 left = create_conv(dbgi, left, mode);
1980 ir_node *res = func(dbgi, left, right, mode);
1985 static ir_node *pointer_arithmetic(ir_node *const pointer,
1988 dbg_info *const dbgi,
1989 const create_arithmetic_func func)
1991 pointer_type_t *const pointer_type = &type->pointer;
1992 type_t *const points_to = pointer_type->points_to;
1993 const unsigned elem_size = get_type_size_const(points_to);
1995 assert(elem_size >= 1);
1996 if (elem_size > 1) {
1997 integer = create_conv(dbgi, integer, mode_int);
1998 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1999 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
2003 ir_mode *const mode = get_ir_mode(type);
2004 return func(dbgi, pointer, integer, mode);
2007 static ir_node *create_arithmetic_assign_binop(
2008 const binary_expression_t *expression, create_arithmetic_func func)
2010 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2011 type_t *const type = skip_typeref(expression->base.type);
2014 if (is_type_pointer(type)) {
2015 ir_node *const pointer = expression_to_firm(expression->left);
2016 ir_node * integer = expression_to_firm(expression->right);
2017 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2019 value = create_arithmetic_binop(expression, func);
2022 ir_mode *const mode = get_ir_mode(type);
2023 value = create_conv(dbgi, value, mode);
2024 set_value_for_expression(expression->left, value);
2029 static ir_node *create_add(const binary_expression_t *expression)
2031 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2032 ir_node *left = expression_to_firm(expression->left);
2033 ir_node *right = expression_to_firm(expression->right);
2034 type_t *type = expression->base.type;
2036 expression_t *expr_left = expression->left;
2037 expression_t *expr_right = expression->right;
2038 type_t *type_left = skip_typeref(expr_left->base.type);
2039 type_t *type_right = skip_typeref(expr_right->base.type);
2041 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2042 ir_mode *const mode = get_ir_mode(type);
2043 return new_d_Add(dbgi, left, right, mode);
2046 if (is_type_pointer(type_left)) {
2047 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2049 assert(is_type_pointer(type_right));
2050 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2054 static ir_node *create_sub(const binary_expression_t *expression)
2056 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2057 expression_t *const expr_left = expression->left;
2058 expression_t *const expr_right = expression->right;
2059 ir_node *const left = expression_to_firm(expr_left);
2060 ir_node *const right = expression_to_firm(expr_right);
2061 type_t *const type = expression->base.type;
2062 type_t *const type_left = skip_typeref(expr_left->base.type);
2063 type_t *const type_right = skip_typeref(expr_right->base.type);
2065 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2066 ir_mode *const mode = get_ir_mode(type);
2067 return new_d_Sub(dbgi, left, right, mode);
2068 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2069 const pointer_type_t *const ptr_type = &type_left->pointer;
2071 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2072 ir_mode *const mode = get_ir_mode(type);
2073 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2074 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2075 ir_node *const no_mem = new_NoMem();
2076 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2077 op_pin_state_floats);
2078 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2081 assert(is_type_pointer(type_left));
2082 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2085 static ir_node *create_shift(const binary_expression_t *expression)
2087 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2088 ir_node *left = expression_to_firm(expression->left);
2089 ir_node *right = expression_to_firm(expression->right);
2090 type_t *type = expression->base.type;
2091 ir_mode *mode = get_ir_mode(type);
2093 /* firm always wants the shift count to be unsigned */
2094 right = create_conv(dbgi, right, mode_uint);
2098 switch(expression->base.kind) {
2099 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2100 case EXPR_BINARY_SHIFTLEFT:
2101 res = new_d_Shl(dbgi, left, right, mode);
2103 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2104 case EXPR_BINARY_SHIFTRIGHT: {
2105 expression_t *expr_left = expression->left;
2106 type_t *type_left = skip_typeref(expr_left->base.type);
2108 if(is_type_signed(type_left)) {
2109 res = new_d_Shrs(dbgi, left, right, mode);
2111 res = new_d_Shr(dbgi, left, right, mode);
2116 panic("create shift op called for non-shift op");
2123 static ir_node *create_divmod(const binary_expression_t *expression)
2125 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2126 ir_node *left = expression_to_firm(expression->left);
2127 ir_node *right = expression_to_firm(expression->right);
2128 ir_node *pin = new_Pin(new_NoMem());
2129 /* be careful with the modes, because in arithmetic assign nodes only
2130 * the right operand has the mode of the arithmetic already */
2131 type_t *type = expression->right->base.type;
2132 ir_mode *mode = get_ir_mode(type);
2133 left = create_conv(dbgi, left, mode);
2137 switch (expression->base.kind) {
2138 case EXPR_BINARY_DIV:
2139 case EXPR_BINARY_DIV_ASSIGN:
2140 if(mode_is_float(mode)) {
2141 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2142 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2144 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2145 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2149 case EXPR_BINARY_MOD:
2150 case EXPR_BINARY_MOD_ASSIGN:
2151 assert(!mode_is_float(mode));
2152 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2153 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2156 default: panic("unexpected binary expression type in create_divmod()");
2162 static ir_node *create_arithmetic_assign_divmod(
2163 const binary_expression_t *expression)
2165 ir_node * value = create_divmod(expression);
2166 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2167 type_t *const type = expression->base.type;
2168 ir_mode *const mode = get_ir_mode(type);
2170 assert(type->kind != TYPE_POINTER);
2172 value = create_conv(dbgi, value, mode);
2173 set_value_for_expression(expression->left, value);
2178 static ir_node *create_arithmetic_assign_shift(
2179 const binary_expression_t *expression)
2181 ir_node * value = create_shift(expression);
2182 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2183 type_t *const type = expression->base.type;
2184 ir_mode *const mode = get_ir_mode(type);
2186 value = create_conv(dbgi, value, mode);
2187 set_value_for_expression(expression->left, value);
2192 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2194 expression_kind_t kind = expression->base.kind;
2197 case EXPR_BINARY_EQUAL:
2198 case EXPR_BINARY_NOTEQUAL:
2199 case EXPR_BINARY_LESS:
2200 case EXPR_BINARY_LESSEQUAL:
2201 case EXPR_BINARY_GREATER:
2202 case EXPR_BINARY_GREATEREQUAL:
2203 case EXPR_BINARY_ISGREATER:
2204 case EXPR_BINARY_ISGREATEREQUAL:
2205 case EXPR_BINARY_ISLESS:
2206 case EXPR_BINARY_ISLESSEQUAL:
2207 case EXPR_BINARY_ISLESSGREATER:
2208 case EXPR_BINARY_ISUNORDERED: {
2209 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2210 ir_node *left = expression_to_firm(expression->left);
2211 ir_node *right = expression_to_firm(expression->right);
2212 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2213 long pnc = get_pnc(kind, expression->left->base.type);
2214 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2217 case EXPR_BINARY_ASSIGN: {
2218 ir_node *right = expression_to_firm(expression->right);
2219 set_value_for_expression(expression->left, right);
2223 case EXPR_BINARY_ADD:
2224 return create_add(expression);
2225 case EXPR_BINARY_SUB:
2226 return create_sub(expression);
2227 case EXPR_BINARY_MUL:
2228 return create_arithmetic_binop(expression, new_d_Mul);
2229 case EXPR_BINARY_BITWISE_AND:
2230 return create_arithmetic_binop(expression, new_d_And);
2231 case EXPR_BINARY_BITWISE_OR:
2232 return create_arithmetic_binop(expression, new_d_Or);
2233 case EXPR_BINARY_BITWISE_XOR:
2234 return create_arithmetic_binop(expression, new_d_Eor);
2235 case EXPR_BINARY_SHIFTLEFT:
2236 case EXPR_BINARY_SHIFTRIGHT:
2237 return create_shift(expression);
2238 case EXPR_BINARY_DIV:
2239 case EXPR_BINARY_MOD:
2240 return create_divmod(expression);
2241 case EXPR_BINARY_LOGICAL_AND:
2242 case EXPR_BINARY_LOGICAL_OR:
2243 return create_lazy_op(expression);
2244 case EXPR_BINARY_COMMA:
2245 expression_to_firm(expression->left);
2246 return expression_to_firm(expression->right);
2247 case EXPR_BINARY_ADD_ASSIGN:
2248 return create_arithmetic_assign_binop(expression, new_d_Add);
2249 case EXPR_BINARY_SUB_ASSIGN:
2250 return create_arithmetic_assign_binop(expression, new_d_Sub);
2251 case EXPR_BINARY_MUL_ASSIGN:
2252 return create_arithmetic_assign_binop(expression, new_d_Mul);
2253 case EXPR_BINARY_MOD_ASSIGN:
2254 case EXPR_BINARY_DIV_ASSIGN:
2255 return create_arithmetic_assign_divmod(expression);
2256 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2257 return create_arithmetic_assign_binop(expression, new_d_And);
2258 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2259 return create_arithmetic_assign_binop(expression, new_d_Or);
2260 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2261 return create_arithmetic_assign_binop(expression, new_d_Eor);
2262 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2263 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2264 return create_arithmetic_assign_shift(expression);
2265 case EXPR_BINARY_BUILTIN_EXPECT:
2266 return expression_to_firm(expression->left);
2268 panic("TODO binexpr type");
2272 static ir_node *array_access_addr(const array_access_expression_t *expression)
2274 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2275 ir_node *base_addr = expression_to_firm(expression->array_ref);
2276 ir_node *offset = expression_to_firm(expression->index);
2277 offset = create_conv(dbgi, offset, mode_uint);
2279 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2280 assert(is_type_pointer(ref_type));
2281 pointer_type_t *pointer_type = &ref_type->pointer;
2283 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2284 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2286 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2291 static ir_node *array_access_to_firm(
2292 const array_access_expression_t *expression)
2294 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2295 ir_node *addr = array_access_addr(expression);
2296 type_t *type = revert_automatic_type_conversion(
2297 (const expression_t*) expression);
2298 type = skip_typeref(type);
2300 return deref_address(type, addr, dbgi);
2303 static long get_offsetof_offset(const offsetof_expression_t *expression)
2305 type_t *orig_type = expression->type;
2308 designator_t *designator = expression->designator;
2309 for( ; designator != NULL; designator = designator->next) {
2310 type_t *type = skip_typeref(orig_type);
2311 /* be sure the type is constructed */
2312 (void) get_ir_type(type);
2314 if(designator->symbol != NULL) {
2315 assert(is_type_compound(type));
2316 symbol_t *symbol = designator->symbol;
2318 declaration_t *declaration = type->compound.declaration;
2319 declaration_t *iter = declaration->scope.declarations;
2320 for( ; iter != NULL; iter = iter->next) {
2321 if(iter->symbol == symbol) {
2325 assert(iter != NULL);
2327 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2328 offset += get_entity_offset(iter->v.entity);
2330 orig_type = iter->type;
2332 expression_t *array_index = designator->array_index;
2333 assert(designator->array_index != NULL);
2334 assert(is_type_array(type));
2335 assert(is_type_valid(array_index->base.type));
2337 long index = fold_constant(array_index);
2338 ir_type *arr_type = get_ir_type(type);
2339 ir_type *elem_type = get_array_element_type(arr_type);
2340 long elem_size = get_type_size_bytes(elem_type);
2342 offset += index * elem_size;
2344 orig_type = type->array.element_type;
2351 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2353 ir_mode *mode = get_ir_mode(expression->base.type);
2354 long offset = get_offsetof_offset(expression);
2355 tarval *tv = new_tarval_from_long(offset, mode);
2356 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2358 return new_d_Const(dbgi, mode, tv);
2361 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2362 ir_entity *entity, type_t *type);
2364 static ir_node *compound_literal_to_firm(
2365 const compound_literal_expression_t *expression)
2367 type_t *type = expression->type;
2369 /* create an entity on the stack */
2370 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2372 ident *const id = unique_ident("CompLit");
2373 ir_type *const irtype = get_ir_type(type);
2374 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2375 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2376 set_entity_ld_ident(entity, id);
2378 set_entity_variability(entity, variability_uninitialized);
2380 /* create initialisation code */
2381 initializer_t *initializer = expression->initializer;
2382 create_local_initializer(initializer, dbgi, entity, type);
2384 /* create a sel for the compound literal address */
2385 ir_node *frame = get_local_frame(entity);
2386 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2391 * Transform a sizeof expression into Firm code.
2393 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2395 type_t *type = expression->type;
2397 type = expression->tp_expression->base.type;
2398 assert(type != NULL);
2401 type = skip_typeref(type);
2402 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2403 if(is_type_array(type) && type->array.is_vla
2404 && expression->tp_expression != NULL) {
2405 expression_to_firm(expression->tp_expression);
2408 return get_type_size(type);
2412 * Transform an alignof expression into Firm code.
2414 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2416 type_t *type = expression->type;
2418 /* beware: if expression is a variable reference, return the
2419 alignment of the variable. */
2420 const expression_t *tp_expression = expression->tp_expression;
2421 const declaration_t *declaration = expr_is_variable(tp_expression);
2422 if (declaration != NULL) {
2423 /* TODO: get the alignment of this variable. */
2425 type = tp_expression->base.type;
2426 assert(type != NULL);
2429 ir_mode *const mode = get_ir_mode(expression->base.type);
2430 symconst_symbol sym;
2431 sym.type_p = get_ir_type(type);
2432 return new_SymConst(mode, sym, symconst_type_align);
2435 static void init_ir_types(void);
2436 long fold_constant(const expression_t *expression)
2440 assert(is_constant_expression(expression));
2442 ir_graph *old_current_ir_graph = current_ir_graph;
2443 if(current_ir_graph == NULL) {
2444 current_ir_graph = get_const_code_irg();
2447 ir_node *cnst = expression_to_firm(expression);
2448 current_ir_graph = old_current_ir_graph;
2450 if(!is_Const(cnst)) {
2451 panic("couldn't fold constant\n");
2454 tarval *tv = get_Const_tarval(cnst);
2455 if(!tarval_is_long(tv)) {
2456 panic("result of constant folding is not integer\n");
2459 return get_tarval_long(tv);
2462 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2464 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2466 /* first try to fold a constant condition */
2467 if(is_constant_expression(expression->condition)) {
2468 long val = fold_constant(expression->condition);
2470 return expression_to_firm(expression->true_expression);
2472 return expression_to_firm(expression->false_expression);
2476 ir_node *cur_block = get_cur_block();
2478 /* create the true block */
2479 ir_node *true_block = new_immBlock();
2481 ir_node *true_val = expression_to_firm(expression->true_expression);
2482 ir_node *true_jmp = new_Jmp();
2484 /* create the false block */
2485 ir_node *false_block = new_immBlock();
2487 ir_node *false_val = expression_to_firm(expression->false_expression);
2488 ir_node *false_jmp = new_Jmp();
2490 /* create the condition evaluation */
2491 set_cur_block(cur_block);
2492 create_condition_evaluation(expression->condition, true_block, false_block);
2493 mature_immBlock(true_block);
2494 mature_immBlock(false_block);
2496 /* create the common block */
2497 ir_node *common_block = new_immBlock();
2498 add_immBlock_pred(common_block, true_jmp);
2499 add_immBlock_pred(common_block, false_jmp);
2500 mature_immBlock(common_block);
2502 /* TODO improve static semantics, so either both or no values are NULL */
2503 if (true_val == NULL || false_val == NULL)
2506 ir_node *in[2] = { true_val, false_val };
2507 ir_mode *mode = get_irn_mode(true_val);
2508 assert(get_irn_mode(false_val) == mode);
2509 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2514 static ir_node *select_addr(const select_expression_t *expression)
2516 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2518 ir_node *compound_addr = expression_to_firm(expression->compound);
2520 declaration_t *entry = expression->compound_entry;
2521 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2522 ir_entity *entity = entry->v.entity;
2524 assert(entity != NULL);
2526 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2531 static ir_node *select_to_firm(const select_expression_t *expression)
2533 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2534 ir_node *addr = select_addr(expression);
2535 type_t *type = revert_automatic_type_conversion(
2536 (const expression_t*) expression);
2537 type = skip_typeref(type);
2539 return deref_address(type, addr, dbgi);
2542 /* Values returned by __builtin_classify_type. */
2543 typedef enum gcc_type_class
2549 enumeral_type_class,
2552 reference_type_class,
2556 function_type_class,
2567 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2569 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2575 const atomic_type_t *const atomic_type = &type->atomic;
2576 switch (atomic_type->akind) {
2577 /* should not be reached */
2578 case ATOMIC_TYPE_INVALID:
2582 /* gcc cannot do that */
2583 case ATOMIC_TYPE_VOID:
2584 tc = void_type_class;
2587 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2588 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2589 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2590 case ATOMIC_TYPE_SHORT:
2591 case ATOMIC_TYPE_USHORT:
2592 case ATOMIC_TYPE_INT:
2593 case ATOMIC_TYPE_UINT:
2594 case ATOMIC_TYPE_LONG:
2595 case ATOMIC_TYPE_ULONG:
2596 case ATOMIC_TYPE_LONGLONG:
2597 case ATOMIC_TYPE_ULONGLONG:
2598 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2599 tc = integer_type_class;
2602 case ATOMIC_TYPE_FLOAT:
2603 case ATOMIC_TYPE_DOUBLE:
2604 case ATOMIC_TYPE_LONG_DOUBLE:
2605 tc = real_type_class;
2608 panic("Unexpected atomic type in classify_type_to_firm().");
2611 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2612 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2613 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2614 case TYPE_ARRAY: /* gcc handles this as pointer */
2615 case TYPE_FUNCTION: /* gcc handles this as pointer */
2616 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2617 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2618 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2620 /* gcc handles this as integer */
2621 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2624 /* typedef/typeof should be skipped already */
2631 panic("unexpected TYPE classify_type_to_firm().");
2634 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2635 ir_mode *const mode = mode_int;
2636 tarval *const tv = new_tarval_from_long(tc, mode);
2637 return new_d_Const(dbgi, mode, tv);
2640 static ir_node *function_name_to_firm(
2641 const funcname_expression_t *const expr)
2643 switch(expr->kind) {
2644 case FUNCNAME_FUNCTION:
2645 case FUNCNAME_PRETTY_FUNCTION:
2646 case FUNCNAME_FUNCDNAME:
2647 if (current_function_name == NULL) {
2648 const source_position_t *const src_pos = &expr->base.source_position;
2649 const char *const name = current_function_decl->symbol->string;
2650 const string_t string = { name, strlen(name) + 1 };
2651 current_function_name = string_to_firm(src_pos, "__func__", &string);
2653 return current_function_name;
2654 case FUNCNAME_FUNCSIG:
2655 if (current_funcsig == NULL) {
2656 const source_position_t *const src_pos = &expr->base.source_position;
2657 ir_entity *ent = get_irg_entity(current_ir_graph);
2658 const char *const name = get_entity_ld_name(ent);
2659 const string_t string = { name, strlen(name) + 1 };
2660 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__", &string);
2662 return current_funcsig;
2664 panic("Unsupported function name");
2667 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2669 statement_t *statement = expr->statement;
2671 assert(statement->kind == STATEMENT_COMPOUND);
2672 return compound_statement_to_firm(&statement->compound);
2675 static ir_node *va_start_expression_to_firm(
2676 const va_start_expression_t *const expr)
2678 ir_type *const method_type = get_ir_type(current_function_decl->type);
2679 int const n = get_method_n_params(method_type) - 1;
2680 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2681 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2682 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2683 ir_node *const no_mem = new_NoMem();
2684 ir_node *const arg_sel =
2685 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2687 ir_node *const cnst = get_type_size(expr->parameter->type);
2688 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2689 set_value_for_expression(expr->ap, add);
2694 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2696 type_t *const type = expr->base.type;
2697 ir_node *const ap = expression_to_firm(expr->ap);
2698 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2699 ir_node *const res = deref_address(type, ap, dbgi);
2701 ir_node *const cnst = get_type_size(expr->base.type);
2702 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2703 set_value_for_expression(expr->ap, add);
2708 static ir_node *dereference_addr(const unary_expression_t *const expression)
2710 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2711 return expression_to_firm(expression->value);
2714 static ir_node *expression_to_addr(const expression_t *expression)
2716 switch(expression->kind) {
2717 case EXPR_REFERENCE:
2718 return reference_addr(&expression->reference);
2719 case EXPR_ARRAY_ACCESS:
2720 return array_access_addr(&expression->array_access);
2722 return select_addr(&expression->select);
2724 return call_expression_to_firm(&expression->call);
2725 case EXPR_UNARY_DEREFERENCE: {
2726 return dereference_addr(&expression->unary);
2731 panic("trying to get address of non-lvalue");
2734 static ir_node *builtin_constant_to_firm(
2735 const builtin_constant_expression_t *expression)
2737 ir_mode *mode = get_ir_mode(expression->base.type);
2740 if (is_constant_expression(expression->value)) {
2745 return new_Const_long(mode, v);
2748 static ir_node *builtin_prefetch_to_firm(
2749 const builtin_prefetch_expression_t *expression)
2751 ir_node *adr = expression_to_firm(expression->adr);
2752 /* no Firm support for prefetch yet */
2757 static ir_node *_expression_to_firm(const expression_t *expression)
2759 switch(expression->kind) {
2760 case EXPR_CHARACTER_CONSTANT:
2761 return character_constant_to_firm(&expression->conste);
2762 case EXPR_WIDE_CHARACTER_CONSTANT:
2763 return wide_character_constant_to_firm(&expression->conste);
2765 return const_to_firm(&expression->conste);
2766 case EXPR_STRING_LITERAL:
2767 return string_literal_to_firm(&expression->string);
2768 case EXPR_WIDE_STRING_LITERAL:
2769 return wide_string_literal_to_firm(&expression->wide_string);
2770 case EXPR_REFERENCE:
2771 return reference_expression_to_firm(&expression->reference);
2773 return call_expression_to_firm(&expression->call);
2775 return unary_expression_to_firm(&expression->unary);
2777 return binary_expression_to_firm(&expression->binary);
2778 case EXPR_ARRAY_ACCESS:
2779 return array_access_to_firm(&expression->array_access);
2781 return sizeof_to_firm(&expression->typeprop);
2783 return alignof_to_firm(&expression->typeprop);
2784 case EXPR_CONDITIONAL:
2785 return conditional_to_firm(&expression->conditional);
2787 return select_to_firm(&expression->select);
2788 case EXPR_CLASSIFY_TYPE:
2789 return classify_type_to_firm(&expression->classify_type);
2791 return function_name_to_firm(&expression->funcname);
2792 case EXPR_STATEMENT:
2793 return statement_expression_to_firm(&expression->statement);
2795 return va_start_expression_to_firm(&expression->va_starte);
2797 return va_arg_expression_to_firm(&expression->va_arge);
2798 case EXPR_BUILTIN_SYMBOL:
2799 panic("unimplemented expression found");
2800 case EXPR_BUILTIN_CONSTANT_P:
2801 return builtin_constant_to_firm(&expression->builtin_constant);
2802 case EXPR_BUILTIN_PREFETCH:
2803 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2805 return offsetof_to_firm(&expression->offsetofe);
2806 case EXPR_COMPOUND_LITERAL:
2807 return compound_literal_to_firm(&expression->compound_literal);
2813 panic("invalid expression found");
2816 static ir_node *expression_to_firm(const expression_t *expression)
2818 ir_node *res = _expression_to_firm(expression);
2820 if(res != NULL && get_irn_mode(res) == mode_b) {
2821 ir_mode *mode = get_ir_mode(expression->base.type);
2823 if(is_Const_null(res)) {
2824 return new_Const_long(mode, 0);
2826 assert(is_Const_one(res));
2827 return new_Const_long(mode, 1);
2831 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2832 return produce_condition_result(expression, dbgi);
2838 static ir_node *expression_to_modeb(const expression_t *expression)
2840 ir_node *res = _expression_to_firm(expression);
2841 res = create_conv(NULL, res, mode_b);
2847 * create a short-circuit expression evaluation that tries to construct
2848 * efficient control flow structures for &&, || and ! expressions
2850 static void create_condition_evaluation(const expression_t *expression,
2851 ir_node *true_block,
2852 ir_node *false_block)
2854 switch(expression->kind) {
2855 case EXPR_UNARY_NOT: {
2856 const unary_expression_t *unary_expression = &expression->unary;
2857 create_condition_evaluation(unary_expression->value, false_block,
2861 case EXPR_BINARY_LOGICAL_AND: {
2862 const binary_expression_t *binary_expression = &expression->binary;
2864 ir_node *cur_block = get_cur_block();
2865 ir_node *extra_block = new_immBlock();
2866 set_cur_block(cur_block);
2867 create_condition_evaluation(binary_expression->left, extra_block,
2869 mature_immBlock(extra_block);
2870 set_cur_block(extra_block);
2871 create_condition_evaluation(binary_expression->right, true_block,
2875 case EXPR_BINARY_LOGICAL_OR: {
2876 const binary_expression_t *binary_expression = &expression->binary;
2878 ir_node *cur_block = get_cur_block();
2879 ir_node *extra_block = new_immBlock();
2880 set_cur_block(cur_block);
2881 create_condition_evaluation(binary_expression->left, true_block,
2883 mature_immBlock(extra_block);
2884 set_cur_block(extra_block);
2885 create_condition_evaluation(binary_expression->right, true_block,
2893 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2894 ir_node *condition = expression_to_modeb(expression);
2895 ir_node *cond = new_d_Cond(dbgi, condition);
2896 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2897 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2899 /* set branch prediction info based on __builtin_expect */
2900 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2901 long cnst = fold_constant(expression->binary.right);
2902 cond_jmp_predicate pred;
2905 pred = COND_JMP_PRED_FALSE;
2907 pred = COND_JMP_PRED_TRUE;
2909 set_Cond_jmp_pred(cond, pred);
2912 add_immBlock_pred(true_block, true_proj);
2913 add_immBlock_pred(false_block, false_proj);
2915 set_cur_block(NULL);
2920 static void create_declaration_entity(declaration_t *declaration,
2921 declaration_kind_t declaration_kind,
2922 ir_type *parent_type)
2924 ident *const id = new_id_from_str(declaration->symbol->string);
2925 type_t *const type = skip_typeref(declaration->type);
2926 ir_type *const irtype = get_ir_type(type);
2927 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2928 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2929 mangle_ent_from_decl(entity, declaration);
2931 declaration->declaration_kind = (unsigned char) declaration_kind;
2932 declaration->v.entity = entity;
2933 set_entity_variability(entity, variability_uninitialized);
2934 if(parent_type == get_tls_type())
2935 set_entity_allocation(entity, allocation_automatic);
2936 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2937 set_entity_allocation(entity, allocation_static);
2939 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2940 set_entity_volatility(entity, volatility_is_volatile);
2945 typedef struct type_path_entry_t type_path_entry_t;
2946 struct type_path_entry_t {
2948 ir_initializer_t *initializer;
2950 declaration_t *compound_entry;
2953 typedef struct type_path_t type_path_t;
2954 struct type_path_t {
2955 type_path_entry_t *path;
2960 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2962 size_t len = ARR_LEN(path->path);
2964 for(size_t i = 0; i < len; ++i) {
2965 const type_path_entry_t *entry = & path->path[i];
2967 type_t *type = skip_typeref(entry->type);
2968 if(is_type_compound(type)) {
2969 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2970 } else if(is_type_array(type)) {
2971 fprintf(stderr, "[%zd]", entry->index);
2973 fprintf(stderr, "-INVALID-");
2976 fprintf(stderr, " (");
2977 print_type(path->top_type);
2978 fprintf(stderr, ")");
2981 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2983 size_t len = ARR_LEN(path->path);
2985 return & path->path[len-1];
2988 static type_path_entry_t *append_to_type_path(type_path_t *path)
2990 size_t len = ARR_LEN(path->path);
2991 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2993 type_path_entry_t *result = & path->path[len];
2994 memset(result, 0, sizeof(result[0]));
2998 static size_t get_compound_size(const compound_type_t *type)
3000 declaration_t *declaration = type->declaration;
3001 declaration_t *member = declaration->scope.declarations;
3003 for( ; member != NULL; member = member->next) {
3006 /* TODO: cache results? */
3011 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3013 type_t *orig_top_type = path->top_type;
3014 type_t *top_type = skip_typeref(orig_top_type);
3016 assert(is_type_compound(top_type) || is_type_array(top_type));
3018 if(ARR_LEN(path->path) == 0) {
3021 type_path_entry_t *top = get_type_path_top(path);
3022 ir_initializer_t *initializer = top->initializer;
3023 return get_initializer_compound_value(initializer, top->index);
3027 static void descend_into_subtype(type_path_t *path)
3029 type_t *orig_top_type = path->top_type;
3030 type_t *top_type = skip_typeref(orig_top_type);
3032 assert(is_type_compound(top_type) || is_type_array(top_type));
3034 ir_initializer_t *initializer = get_initializer_entry(path);
3036 type_path_entry_t *top = append_to_type_path(path);
3037 top->type = top_type;
3041 if(is_type_compound(top_type)) {
3042 declaration_t *declaration = top_type->compound.declaration;
3043 declaration_t *entry = declaration->scope.declarations;
3045 top->compound_entry = entry;
3047 len = get_compound_size(&top_type->compound);
3049 path->top_type = entry->type;
3051 assert(is_type_array(top_type));
3052 assert(top_type->array.size > 0);
3055 path->top_type = top_type->array.element_type;
3056 len = top_type->array.size;
3058 if(initializer == NULL
3059 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3060 initializer = create_initializer_compound(len);
3061 /* we have to set the entry at the 2nd latest path entry... */
3062 size_t path_len = ARR_LEN(path->path);
3063 assert(path_len >= 1);
3065 type_path_entry_t *entry = & path->path[path_len-2];
3066 ir_initializer_t *tinitializer = entry->initializer;
3067 set_initializer_compound_value(tinitializer, entry->index,
3071 top->initializer = initializer;
3074 static void ascend_from_subtype(type_path_t *path)
3076 type_path_entry_t *top = get_type_path_top(path);
3078 path->top_type = top->type;
3080 size_t len = ARR_LEN(path->path);
3081 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3084 static void walk_designator(type_path_t *path, const designator_t *designator)
3086 /* designators start at current object type */
3087 ARR_RESIZE(type_path_entry_t, path->path, 1);
3089 for( ; designator != NULL; designator = designator->next) {
3090 type_path_entry_t *top = get_type_path_top(path);
3091 type_t *orig_type = top->type;
3092 type_t *type = skip_typeref(orig_type);
3094 if(designator->symbol != NULL) {
3095 assert(is_type_compound(type));
3097 symbol_t *symbol = designator->symbol;
3099 declaration_t *declaration = type->compound.declaration;
3100 declaration_t *iter = declaration->scope.declarations;
3101 for( ; iter != NULL; iter = iter->next, ++index) {
3102 if(iter->symbol == symbol) {
3106 assert(iter != NULL);
3108 top->type = orig_type;
3109 top->compound_entry = iter;
3111 orig_type = iter->type;
3113 expression_t *array_index = designator->array_index;
3114 assert(designator->array_index != NULL);
3115 assert(is_type_array(type));
3116 assert(is_type_valid(array_index->base.type));
3118 long index = fold_constant(array_index);
3121 if(type->array.size_constant == 1) {
3122 long array_size = type->array.size;
3123 assert(index < array_size);
3127 top->type = orig_type;
3128 top->index = (size_t) index;
3129 orig_type = type->array.element_type;
3131 path->top_type = orig_type;
3133 if(designator->next != NULL) {
3134 descend_into_subtype(path);
3138 path->invalid = false;
3141 static void advance_current_object(type_path_t *path)
3144 /* TODO: handle this... */
3145 panic("invalid initializer in ast2firm (excessive elements)");
3149 type_path_entry_t *top = get_type_path_top(path);
3151 type_t *type = skip_typeref(top->type);
3152 if(is_type_union(type)) {
3153 top->compound_entry = NULL;
3154 } else if(is_type_struct(type)) {
3155 declaration_t *entry = top->compound_entry;
3158 entry = entry->next;
3159 top->compound_entry = entry;
3161 path->top_type = entry->type;
3165 assert(is_type_array(type));
3168 if(!type->array.size_constant || top->index < type->array.size) {
3173 /* we're past the last member of the current sub-aggregate, try if we
3174 * can ascend in the type hierarchy and continue with another subobject */
3175 size_t len = ARR_LEN(path->path);
3178 ascend_from_subtype(path);
3179 advance_current_object(path);
3181 path->invalid = true;
3186 static ir_initializer_t *create_ir_initializer(
3187 const initializer_t *initializer, type_t *type);
3189 static ir_initializer_t *create_ir_initializer_value(
3190 const initializer_value_t *initializer)
3192 ir_node *value = expression_to_firm(initializer->value);
3193 return create_initializer_const(value);
3196 static ir_initializer_t *create_ir_initializer_list(
3197 const initializer_list_t *initializer, type_t *type)
3200 memset(&path, 0, sizeof(path));
3201 path.top_type = type;
3202 path.path = NEW_ARR_F(type_path_entry_t, 0);
3204 descend_into_subtype(&path);
3206 for(size_t i = 0; i < initializer->len; ++i) {
3207 const initializer_t *sub_initializer = initializer->initializers[i];
3209 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3210 walk_designator(&path, sub_initializer->designator.designator);
3214 if(sub_initializer->kind == INITIALIZER_VALUE) {
3215 /* we might have to descend into types until we're at a scalar
3218 type_t *orig_top_type = path.top_type;
3219 type_t *top_type = skip_typeref(orig_top_type);
3221 if(is_type_scalar(top_type))
3223 descend_into_subtype(&path);
3227 ir_initializer_t *sub_irinitializer
3228 = create_ir_initializer(sub_initializer, path.top_type);
3230 size_t path_len = ARR_LEN(path.path);
3231 assert(path_len >= 1);
3232 type_path_entry_t *entry = & path.path[path_len-1];
3233 ir_initializer_t *tinitializer = entry->initializer;
3234 set_initializer_compound_value(tinitializer, entry->index,
3237 advance_current_object(&path);
3240 assert(ARR_LEN(path.path) >= 1);
3241 ir_initializer_t *result = path.path[0].initializer;
3242 DEL_ARR_F(path.path);
3247 static ir_initializer_t *create_ir_initializer_string(
3248 const initializer_string_t *initializer, type_t *type)
3250 type = skip_typeref(type);
3252 size_t string_len = initializer->string.size;
3253 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3254 size_t len = type->array.size;
3255 ir_initializer_t *irinitializer = create_initializer_compound(len);
3257 const char *string = initializer->string.begin;
3258 ir_mode *mode = get_type_mode(ir_type_const_char);
3260 for(size_t i = 0; i < len; ++i) {
3265 tarval *tv = new_tarval_from_long(string[i], mode);
3266 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3268 set_initializer_compound_value(irinitializer, i, char_initializer);
3271 return irinitializer;
3274 static ir_initializer_t *create_ir_initializer_wide_string(
3275 const initializer_wide_string_t *initializer, type_t *type)
3277 size_t string_len = initializer->string.size;
3278 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3279 size_t len = type->array.size;
3280 ir_initializer_t *irinitializer = create_initializer_compound(len);
3282 const wchar_rep_t *string = initializer->string.begin;
3283 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3285 for(size_t i = 0; i < len; ++i) {
3287 if(i < string_len) {
3290 tarval *tv = new_tarval_from_long(string[i], mode);
3291 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3293 set_initializer_compound_value(irinitializer, i, char_initializer);
3296 return irinitializer;
3299 static ir_initializer_t *create_ir_initializer(
3300 const initializer_t *initializer, type_t *type)
3302 switch(initializer->kind) {
3303 case INITIALIZER_STRING:
3304 return create_ir_initializer_string(&initializer->string, type);
3306 case INITIALIZER_WIDE_STRING:
3307 return create_ir_initializer_wide_string(&initializer->wide_string,
3310 case INITIALIZER_LIST:
3311 return create_ir_initializer_list(&initializer->list, type);
3313 case INITIALIZER_VALUE:
3314 return create_ir_initializer_value(&initializer->value);
3316 case INITIALIZER_DESIGNATOR:
3317 panic("unexpected designator initializer found");
3319 panic("unknown initializer");
3322 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3325 ir_mode *mode = get_type_mode(type);
3326 tarval *zero = get_mode_null(mode);
3327 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3329 /* TODO: bitfields */
3330 ir_node *mem = get_store();
3331 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3332 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3336 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3337 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3339 switch(get_initializer_kind(initializer)) {
3340 case IR_INITIALIZER_NULL: {
3341 /* TODO: implement this for compound types... */
3342 assert(type != NULL);
3344 ir_mode *mode = get_type_mode(type);
3345 tarval *zero = get_mode_null(mode);
3346 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3348 /* TODO: bitfields */
3349 ir_node *mem = get_store();
3350 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3351 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3355 case IR_INITIALIZER_CONST: {
3356 ir_node *node = get_initializer_const_value(initializer);
3357 ir_mode *mode = get_irn_mode(node);
3358 assert(get_type_mode(type) == mode);
3360 /* TODO: bitfields... */
3361 ir_node *mem = get_store();
3362 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3363 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3367 case IR_INITIALIZER_TARVAL: {
3368 tarval *tv = get_initializer_tarval_value(initializer);
3369 ir_mode *mode = get_tarval_mode(tv);
3370 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3371 assert(get_type_mode(type) == mode);
3373 /* TODO: bitfields... */
3374 ir_node *mem = get_store();
3375 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3376 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3380 case IR_INITIALIZER_COMPOUND: {
3381 assert(is_compound_type(type));
3383 if(is_Array_type(type)) {
3384 assert(has_array_upper_bound(type, 0));
3385 n_members = get_array_upper_bound_int(type, 0);
3387 n_members = get_compound_n_members(type);
3390 if(get_initializer_compound_n_entries(initializer)
3391 != (unsigned) n_members)
3392 panic("initializer doesn't match compound type");
3394 for(int i = 0; i < n_members; ++i) {
3397 if(is_Array_type(type)) {
3398 ir_entity *entity = get_array_element_entity(type);
3399 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3400 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3401 ir_node *in[1] = { cnst };
3402 irtype = get_array_element_type(type);
3403 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3405 ir_entity *member = get_compound_member(type, i);
3407 irtype = get_entity_type(member);
3408 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3411 ir_initializer_t *sub_init
3412 = get_initializer_compound_value(initializer, i);
3414 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3420 panic("invalid IR_INITIALIZER found");
3423 static void create_dynamic_initializer(ir_initializer_t *initializer,
3424 dbg_info *dbgi, ir_entity *entity)
3426 ir_node *frame = get_local_frame(entity);
3427 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3428 ir_type *type = get_entity_type(entity);
3430 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3433 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3434 ir_entity *entity, type_t *type)
3436 ir_node *memory = get_store();
3437 ir_node *nomem = new_NoMem();
3438 ir_node *frame = get_irg_frame(current_ir_graph);
3439 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3441 if(initializer->kind == INITIALIZER_VALUE) {
3442 initializer_value_t *initializer_value = &initializer->value;
3444 ir_node *value = expression_to_firm(initializer_value->value);
3445 type = skip_typeref(type);
3446 assign_value(dbgi, addr, type, value);
3450 if(!is_constant_initializer(initializer)) {
3451 ir_initializer_t *irinitializer
3452 = create_ir_initializer(initializer, type);
3454 create_dynamic_initializer(irinitializer, dbgi, entity);
3458 /* create the ir_initializer */
3459 ir_graph *const old_current_ir_graph = current_ir_graph;
3460 current_ir_graph = get_const_code_irg();
3462 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3464 assert(current_ir_graph == get_const_code_irg());
3465 current_ir_graph = old_current_ir_graph;
3467 /* create a "template" entity which is copied to the entity on the stack */
3468 ident *const id = unique_ident("initializer");
3469 ir_type *const irtype = get_ir_type(type);
3470 ir_type *const global_type = get_glob_type();
3471 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3472 set_entity_ld_ident(init_entity, id);
3474 set_entity_variability(init_entity, variability_initialized);
3475 set_entity_visibility(init_entity, visibility_local);
3476 set_entity_allocation(init_entity, allocation_static);
3478 set_entity_initializer(init_entity, irinitializer);
3480 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3481 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3483 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3484 set_store(copyb_mem);
3487 static void create_initializer_local_variable_entity(declaration_t *declaration)
3489 initializer_t *initializer = declaration->init.initializer;
3490 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3491 ir_entity *entity = declaration->v.entity;
3492 type_t *type = declaration->type;
3493 create_local_initializer(initializer, dbgi, entity, type);
3496 static void create_declaration_initializer(declaration_t *declaration)
3498 initializer_t *initializer = declaration->init.initializer;
3499 if(initializer == NULL)
3502 declaration_kind_t declaration_kind
3503 = (declaration_kind_t) declaration->declaration_kind;
3504 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3505 create_initializer_local_variable_entity(declaration);
3509 if(initializer->kind == INITIALIZER_VALUE) {
3510 initializer_value_t *initializer_value = &initializer->value;
3512 ir_node *value = expression_to_firm(initializer_value->value);
3514 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3515 set_value(declaration->v.value_number, value);
3517 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3519 ir_entity *entity = declaration->v.entity;
3521 set_entity_variability(entity, variability_initialized);
3522 set_atomic_ent_value(entity, value);
3525 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3526 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3528 ir_entity *entity = declaration->v.entity;
3529 ir_initializer_t *irinitializer
3530 = create_ir_initializer(initializer, declaration->type);
3532 set_entity_variability(entity, variability_initialized);
3533 set_entity_initializer(entity, irinitializer);
3537 static void create_variable_length_array(declaration_t *declaration)
3539 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3540 type_t *type = declaration->type;
3541 ir_node *mem = get_store();
3542 ir_type *el_type = get_ir_type(type->array.element_type);
3544 /* make sure size_node is calculated */
3545 get_type_size(type);
3546 ir_node *elems = type->array.size_node;
3547 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3549 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3550 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3553 /* initializers are not allowed for VLAs */
3554 assert(declaration->init.initializer == NULL);
3556 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3557 declaration->v.vla_base = addr;
3559 /* TODO: record VLA somewhere so we create the free node when we leave
3564 * Creates a Firm local variable from a declaration.
3566 static void create_local_variable(declaration_t *declaration)
3568 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3570 bool needs_entity = declaration->address_taken;
3571 type_t *type = skip_typeref(declaration->type);
3573 /* is it a variable length array? */
3574 if(is_type_array(type) && !type->array.size_constant) {
3575 create_variable_length_array(declaration);
3577 } else if(is_type_array(type) || is_type_compound(type)) {
3578 needs_entity = true;
3579 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3580 needs_entity = true;
3584 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3585 create_declaration_entity(declaration,
3586 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3589 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3590 declaration->v.value_number = next_value_number_function;
3591 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3592 ++next_value_number_function;
3595 create_declaration_initializer(declaration);
3598 static void create_local_static_variable(declaration_t *declaration)
3600 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3602 type_t *const type = skip_typeref(declaration->type);
3603 ir_type *const global_type = get_glob_type();
3604 ident *const id = unique_ident(declaration->symbol->string);
3605 ir_type *const irtype = get_ir_type(type);
3606 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3607 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3608 mangle_ent_from_decl(entity, declaration);
3610 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3611 set_entity_volatility(entity, volatility_is_volatile);
3614 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3615 declaration->v.entity = entity;
3616 set_entity_variability(entity, variability_uninitialized);
3617 set_entity_visibility(entity, visibility_local);
3618 set_entity_allocation(entity, allocation_static);
3620 ir_graph *const old_current_ir_graph = current_ir_graph;
3621 current_ir_graph = get_const_code_irg();
3623 create_declaration_initializer(declaration);
3625 assert(current_ir_graph == get_const_code_irg());
3626 current_ir_graph = old_current_ir_graph;
3631 static void return_statement_to_firm(return_statement_t *statement)
3633 if(get_cur_block() == NULL)
3636 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3637 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3642 if(get_method_n_ress(func_irtype) > 0) {
3643 ir_type *res_type = get_method_res_type(func_irtype, 0);
3645 if(statement->value != NULL) {
3646 ir_node *node = expression_to_firm(statement->value);
3647 node = do_strict_conv(dbgi, node);
3651 if(is_compound_type(res_type)) {
3654 mode = get_type_mode(res_type);
3656 in[0] = new_Unknown(mode);
3660 /* build return_value for its side effects */
3661 if(statement->value != NULL) {
3662 expression_to_firm(statement->value);
3667 ir_node *store = get_store();
3668 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3670 ir_node *end_block = get_irg_end_block(current_ir_graph);
3671 add_immBlock_pred(end_block, ret);
3673 set_cur_block(NULL);
3676 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3678 if(get_cur_block() == NULL)
3681 return expression_to_firm(statement->expression);
3684 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3686 ir_node *result = NULL;
3687 statement_t *statement = compound->statements;
3688 for( ; statement != NULL; statement = statement->base.next) {
3689 //context2firm(&statement->scope);
3691 if(statement->base.next == NULL
3692 && statement->kind == STATEMENT_EXPRESSION) {
3693 result = expression_statement_to_firm(
3694 &statement->expression);
3697 statement_to_firm(statement);
3703 static void create_global_variable(declaration_t *declaration)
3707 switch ((storage_class_tag_t)declaration->storage_class) {
3708 case STORAGE_CLASS_STATIC:
3709 vis = visibility_local;
3712 case STORAGE_CLASS_EXTERN:
3713 vis = visibility_external_allocated;
3716 case STORAGE_CLASS_NONE:
3717 vis = visibility_external_visible;
3720 case STORAGE_CLASS_THREAD:
3721 vis = visibility_external_visible;
3724 case STORAGE_CLASS_THREAD_EXTERN:
3725 vis = visibility_external_allocated;
3728 case STORAGE_CLASS_THREAD_STATIC:
3729 vis = visibility_local;
3733 var_type = get_tls_type();
3737 var_type = get_glob_type();
3741 create_declaration_entity(declaration,
3742 DECLARATION_KIND_GLOBAL_VARIABLE,
3744 set_entity_visibility(declaration->v.entity, vis);
3748 case STORAGE_CLASS_TYPEDEF:
3749 case STORAGE_CLASS_AUTO:
3750 case STORAGE_CLASS_REGISTER:
3751 case STORAGE_CLASS_ENUM_ENTRY:
3754 panic("Invalid storage class for global variable");
3757 static void create_local_declaration(declaration_t *declaration)
3759 if(declaration->symbol == NULL)
3762 type_t *type = skip_typeref(declaration->type);
3764 switch ((storage_class_tag_t) declaration->storage_class) {
3765 case STORAGE_CLASS_STATIC:
3766 create_local_static_variable(declaration);
3768 case STORAGE_CLASS_EXTERN:
3769 create_global_variable(declaration);
3770 create_declaration_initializer(declaration);
3772 case STORAGE_CLASS_NONE:
3773 case STORAGE_CLASS_AUTO:
3774 case STORAGE_CLASS_REGISTER:
3775 if(is_type_function(type)) {
3776 if(declaration->init.statement != NULL) {
3777 panic("nested functions not supported yet");
3779 get_function_entity(declaration);
3782 create_local_variable(declaration);
3785 case STORAGE_CLASS_ENUM_ENTRY:
3786 case STORAGE_CLASS_TYPEDEF:
3787 case STORAGE_CLASS_THREAD:
3788 case STORAGE_CLASS_THREAD_EXTERN:
3789 case STORAGE_CLASS_THREAD_STATIC:
3792 panic("invalid storage class found");
3795 static void declaration_statement_to_firm(declaration_statement_t *statement)
3797 declaration_t *declaration = statement->declarations_begin;
3798 declaration_t *end = statement->declarations_end->next;
3799 for( ; declaration != end; declaration = declaration->next) {
3800 if(declaration->namespc != NAMESPACE_NORMAL)
3802 create_local_declaration(declaration);
3806 static void if_statement_to_firm(if_statement_t *statement)
3808 ir_node *cur_block = get_cur_block();
3810 ir_node *fallthrough_block = new_immBlock();
3812 /* the true (blocks) */
3813 ir_node *true_block;
3814 if (statement->true_statement != NULL) {
3815 true_block = new_immBlock();
3816 statement_to_firm(statement->true_statement);
3817 if(get_cur_block() != NULL) {
3818 ir_node *jmp = new_Jmp();
3819 add_immBlock_pred(fallthrough_block, jmp);
3822 true_block = fallthrough_block;
3825 /* the false (blocks) */
3826 ir_node *false_block;
3827 if(statement->false_statement != NULL) {
3828 false_block = new_immBlock();
3830 statement_to_firm(statement->false_statement);
3831 if(get_cur_block() != NULL) {
3832 ir_node *jmp = new_Jmp();
3833 add_immBlock_pred(fallthrough_block, jmp);
3836 false_block = fallthrough_block;
3839 /* create the condition */
3840 if(cur_block != NULL) {
3841 set_cur_block(cur_block);
3842 create_condition_evaluation(statement->condition, true_block,
3846 mature_immBlock(true_block);
3847 if(false_block != fallthrough_block) {
3848 mature_immBlock(false_block);
3850 mature_immBlock(fallthrough_block);
3852 set_cur_block(fallthrough_block);
3855 static void while_statement_to_firm(while_statement_t *statement)
3857 ir_node *jmp = NULL;
3858 if(get_cur_block() != NULL) {
3862 /* create the header block */
3863 ir_node *header_block = new_immBlock();
3865 add_immBlock_pred(header_block, jmp);
3868 /* the false block */
3869 ir_node *false_block = new_immBlock();
3872 ir_node *body_block;
3873 if (statement->body != NULL) {
3874 ir_node *old_continue_label = continue_label;
3875 ir_node *old_break_label = break_label;
3876 continue_label = header_block;
3877 break_label = false_block;
3879 body_block = new_immBlock();
3880 statement_to_firm(statement->body);
3882 assert(continue_label == header_block);
3883 assert(break_label == false_block);
3884 continue_label = old_continue_label;
3885 break_label = old_break_label;
3887 if(get_cur_block() != NULL) {
3889 add_immBlock_pred(header_block, jmp);
3892 body_block = header_block;
3895 /* create the condition */
3896 set_cur_block(header_block);
3898 create_condition_evaluation(statement->condition, body_block, false_block);
3899 mature_immBlock(body_block);
3900 mature_immBlock(false_block);
3901 mature_immBlock(header_block);
3903 set_cur_block(false_block);
3906 static void do_while_statement_to_firm(do_while_statement_t *statement)
3908 ir_node *jmp = NULL;
3909 if(get_cur_block() != NULL) {
3913 /* create the header block */
3914 ir_node *header_block = new_immBlock();
3916 /* the false block */
3917 ir_node *false_block = new_immBlock();
3920 ir_node *body_block = new_immBlock();
3922 add_immBlock_pred(body_block, jmp);
3925 if (statement->body != NULL) {
3926 ir_node *old_continue_label = continue_label;
3927 ir_node *old_break_label = break_label;
3928 continue_label = header_block;
3929 break_label = false_block;
3931 statement_to_firm(statement->body);
3933 assert(continue_label == header_block);
3934 assert(break_label == false_block);
3935 continue_label = old_continue_label;
3936 break_label = old_break_label;
3938 if (get_cur_block() == NULL) {
3939 mature_immBlock(header_block);
3940 mature_immBlock(body_block);
3941 mature_immBlock(false_block);
3946 ir_node *body_jmp = new_Jmp();
3947 add_immBlock_pred(header_block, body_jmp);
3948 mature_immBlock(header_block);
3950 /* create the condition */
3951 set_cur_block(header_block);
3953 create_condition_evaluation(statement->condition, body_block, false_block);
3954 mature_immBlock(body_block);
3955 mature_immBlock(false_block);
3956 mature_immBlock(header_block);
3958 set_cur_block(false_block);
3961 static void for_statement_to_firm(for_statement_t *statement)
3963 ir_node *jmp = NULL;
3964 if (get_cur_block() != NULL) {
3965 if(statement->initialisation != NULL) {
3966 expression_to_firm(statement->initialisation);
3969 /* create declarations */
3970 declaration_t *declaration = statement->scope.declarations;
3971 for( ; declaration != NULL; declaration = declaration->next) {
3972 create_local_declaration(declaration);
3979 /* create the step block */
3980 ir_node *const step_block = new_immBlock();
3981 if (statement->step != NULL) {
3982 expression_to_firm(statement->step);
3984 ir_node *const step_jmp = new_Jmp();
3986 /* create the header block */
3987 ir_node *const header_block = new_immBlock();
3989 add_immBlock_pred(header_block, jmp);
3991 add_immBlock_pred(header_block, step_jmp);
3993 /* the false block */
3994 ir_node *const false_block = new_immBlock();
3997 ir_node * body_block;
3998 if (statement->body != NULL) {
3999 ir_node *const old_continue_label = continue_label;
4000 ir_node *const old_break_label = break_label;
4001 continue_label = step_block;
4002 break_label = false_block;
4004 body_block = new_immBlock();
4005 statement_to_firm(statement->body);
4007 assert(continue_label == step_block);
4008 assert(break_label == false_block);
4009 continue_label = old_continue_label;
4010 break_label = old_break_label;
4012 if (get_cur_block() != NULL) {
4014 add_immBlock_pred(step_block, jmp);
4017 body_block = step_block;
4020 /* create the condition */
4021 set_cur_block(header_block);
4022 if (statement->condition != NULL) {
4023 create_condition_evaluation(statement->condition, body_block,
4026 keep_alive(header_block);
4028 add_immBlock_pred(body_block, jmp);
4031 mature_immBlock(body_block);
4032 mature_immBlock(false_block);
4033 mature_immBlock(step_block);
4034 mature_immBlock(header_block);
4035 mature_immBlock(false_block);
4037 set_cur_block(false_block);
4040 static void create_jump_statement(const statement_t *statement,
4041 ir_node *target_block)
4043 if(get_cur_block() == NULL)
4046 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4047 ir_node *jump = new_d_Jmp(dbgi);
4048 add_immBlock_pred(target_block, jump);
4050 set_cur_block(NULL);
4053 static void switch_statement_to_firm(const switch_statement_t *statement)
4055 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4057 ir_node *expression = expression_to_firm(statement->expression);
4058 ir_node *cond = new_d_Cond(dbgi, expression);
4059 ir_node *break_block = new_immBlock();
4061 set_cur_block(NULL);
4063 ir_node *const old_switch_cond = current_switch_cond;
4064 ir_node *const old_break_label = break_label;
4065 const bool old_saw_default_label = saw_default_label;
4066 current_switch_cond = cond;
4067 break_label = break_block;
4069 if (statement->body != NULL) {
4070 statement_to_firm(statement->body);
4073 if(get_cur_block() != NULL) {
4074 ir_node *jmp = new_Jmp();
4075 add_immBlock_pred(break_block, jmp);
4078 if (!saw_default_label) {
4079 set_cur_block(get_nodes_block(cond));
4080 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4081 MAGIC_DEFAULT_PN_NUMBER);
4082 add_immBlock_pred(break_block, proj);
4085 assert(current_switch_cond == cond);
4086 assert(break_label == break_block);
4087 current_switch_cond = old_switch_cond;
4088 break_label = old_break_label;
4089 saw_default_label = old_saw_default_label;
4091 mature_immBlock(break_block);
4092 set_cur_block(break_block);
4095 static void case_label_to_firm(const case_label_statement_t *statement)
4097 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4099 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4101 /* let's create a node and hope firm constant folding creates a Const
4104 ir_node *old_block = get_nodes_block(current_switch_cond);
4105 ir_node *block = new_immBlock();
4107 set_cur_block(old_block);
4108 if(statement->expression != NULL) {
4109 long start_pn = fold_constant(statement->expression);
4110 long end_pn = start_pn;
4111 if (statement->end_range != NULL) {
4112 end_pn = fold_constant(statement->end_range);
4114 assert(start_pn <= end_pn);
4115 /* create jumps for all cases in the given range */
4116 for (long pn = start_pn; pn <= end_pn; ++pn) {
4117 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4118 /* oops someone detected our cheating... */
4119 panic("magic default pn used");
4121 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4122 add_immBlock_pred(block, proj);
4125 saw_default_label = true;
4126 proj = new_d_defaultProj(dbgi, current_switch_cond,
4127 MAGIC_DEFAULT_PN_NUMBER);
4129 add_immBlock_pred(block, proj);
4132 if (fallthrough != NULL) {
4133 add_immBlock_pred(block, fallthrough);
4135 mature_immBlock(block);
4136 set_cur_block(block);
4138 if(statement->statement != NULL) {
4139 statement_to_firm(statement->statement);
4143 static ir_node *get_label_block(declaration_t *label)
4145 assert(label->namespc == NAMESPACE_LABEL);
4147 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4148 return label->v.block;
4150 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4152 ir_node *old_cur_block = get_cur_block();
4153 ir_node *block = new_immBlock();
4154 set_cur_block(old_cur_block);
4156 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4157 label->v.block = block;
4159 ARR_APP1(ir_node *, imature_blocks, block);
4164 static void label_to_firm(const label_statement_t *statement)
4166 ir_node *block = get_label_block(statement->label);
4168 if(get_cur_block() != NULL) {
4169 ir_node *jmp = new_Jmp();
4170 add_immBlock_pred(block, jmp);
4173 set_cur_block(block);
4176 if(statement->statement != NULL) {
4177 statement_to_firm(statement->statement);
4181 static void goto_to_firm(const goto_statement_t *statement)
4183 if(get_cur_block() == NULL)
4186 ir_node *block = get_label_block(statement->label);
4187 ir_node *jmp = new_Jmp();
4188 add_immBlock_pred(block, jmp);
4190 set_cur_block(NULL);
4193 typedef enum modifier_t {
4194 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4195 ASM_MODIFIER_READ_WRITE = 1 << 1,
4196 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4197 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4200 static void asm_statement_to_firm(const asm_statement_t *statement)
4203 fprintf(stderr, "WARNING asm not implemented yet!\n");
4205 bool needs_memory = false;
4207 size_t n_clobbers = 0;
4208 asm_clobber_t *clobber = statement->clobbers;
4209 for( ; clobber != NULL; clobber = clobber->next) {
4210 if(strcmp(clobber->clobber, "memory") == 0) {
4211 needs_memory = true;
4215 ident *id = new_id_from_str(clobber->clobber);
4216 obstack_ptr_grow(&asm_obst, id);
4219 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4220 ident **clobbers = NULL;
4221 if(n_clobbers > 0) {
4222 clobbers = obstack_finish(&asm_obst);
4225 /* find and count input and output constraints */
4226 asm_constraint_t *constraint = statement->inputs;
4227 for( ; constraint != NULL; constraint = constraint->next) {
4229 bool supports_memop = false;
4230 for(const char *c = constraint->constraints; *c != 0; ++c) {
4231 /* TODO: improve error messages */
4235 panic("multiple alternative assembler constraints not "
4243 supports_memop = true;
4244 obstack_1grow(&asm_obst, *c);
4247 if(modifiers & ASM_MODIFIER_READ_WRITE)
4248 panic("inconsistent register constraints");
4249 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4252 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4253 panic("inconsistent register constraints");
4254 modifiers |= ASM_MODIFIER_READ_WRITE;
4257 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4258 panic("early clobber assembler constraint not supported yet");
4261 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4262 panic("commutative assembler constraint not supported yet");
4265 /* skip register preferences stuff... */
4266 while(*c != 0 && *c != ',')
4270 /* skip register preferences stuff... */
4274 obstack_1grow(&asm_obst, *c);
4278 obstack_1grow(&asm_obst, '\0');
4279 const char *constraint_string = obstack_finish(&asm_obst);
4281 needs_memory |= supports_memop;
4282 if(supports_memop) {
4289 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4290 statement_to_firm(statement->try_statement);
4291 warningf(&statement->base.source_position, "structured exception handling ignored");
4294 static void leave_statement_to_firm(leave_statement_t *statement) {
4295 errorf(&statement->base.source_position, "__leave not supported yet");
4298 static void statement_to_firm(statement_t *statement)
4300 switch(statement->kind) {
4301 case STATEMENT_INVALID:
4302 panic("invalid statement found");
4304 case STATEMENT_EMPTY:
4307 case STATEMENT_COMPOUND:
4308 compound_statement_to_firm(&statement->compound);
4310 case STATEMENT_RETURN:
4311 return_statement_to_firm(&statement->returns);
4313 case STATEMENT_EXPRESSION:
4314 expression_statement_to_firm(&statement->expression);
4317 if_statement_to_firm(&statement->ifs);
4319 case STATEMENT_WHILE:
4320 while_statement_to_firm(&statement->whiles);
4322 case STATEMENT_DO_WHILE:
4323 do_while_statement_to_firm(&statement->do_while);
4325 case STATEMENT_DECLARATION:
4326 declaration_statement_to_firm(&statement->declaration);
4328 case STATEMENT_BREAK:
4329 create_jump_statement(statement, break_label);
4331 case STATEMENT_CONTINUE:
4332 create_jump_statement(statement, continue_label);
4334 case STATEMENT_SWITCH:
4335 switch_statement_to_firm(&statement->switchs);
4337 case STATEMENT_CASE_LABEL:
4338 case_label_to_firm(&statement->case_label);
4341 for_statement_to_firm(&statement->fors);
4343 case STATEMENT_LABEL:
4344 label_to_firm(&statement->label);
4346 case STATEMENT_GOTO:
4347 goto_to_firm(&statement->gotos);
4350 asm_statement_to_firm(&statement->asms);
4352 case STATEMENT_MS_TRY:
4353 ms_try_statement_to_firm(&statement->ms_try);
4355 case STATEMENT_LEAVE:
4356 leave_statement_to_firm(&statement->leave);
4359 panic("Statement not implemented\n");
4362 static int count_decls_in_expression(const expression_t *expression);
4364 static int count_local_declarations(const declaration_t * decl,
4365 const declaration_t *const end)
4368 for (; decl != end; decl = decl->next) {
4369 if(decl->namespc != NAMESPACE_NORMAL)
4371 const type_t *type = skip_typeref(decl->type);
4372 if (!decl->address_taken && is_type_scalar(type))
4374 const initializer_t *initializer = decl->init.initializer;
4375 /* FIXME: should walk initializer hierarchies... */
4376 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4377 count += count_decls_in_expression(initializer->value.value);
4383 static int count_decls_in_expression(const expression_t *expression) {
4386 if(expression == NULL)
4389 switch((expression_kind_t) expression->base.kind) {
4390 case EXPR_STATEMENT:
4391 return count_decls_in_stmts(expression->statement.statement);
4393 int count_left = count_decls_in_expression(expression->binary.left);
4394 int count_right = count_decls_in_expression(expression->binary.right);
4395 return count_left + count_right;
4398 return count_decls_in_expression(expression->unary.value);
4400 call_argument_t *argument = expression->call.arguments;
4401 for( ; argument != NULL; argument = argument->next) {
4402 count += count_decls_in_expression(argument->expression);
4409 panic("unexpected expression kind");
4411 case EXPR_COMPOUND_LITERAL:
4415 case EXPR_CONDITIONAL:
4416 count += count_decls_in_expression(expression->conditional.condition);
4417 count += count_decls_in_expression(expression->conditional.true_expression);
4418 count += count_decls_in_expression(expression->conditional.false_expression);
4421 case EXPR_BUILTIN_PREFETCH:
4422 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4423 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4424 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4427 case EXPR_BUILTIN_CONSTANT_P:
4428 count += count_decls_in_expression(expression->builtin_constant.value);
4432 count += count_decls_in_expression(expression->select.compound);
4435 case EXPR_ARRAY_ACCESS:
4436 count += count_decls_in_expression(expression->array_access.array_ref);
4437 count += count_decls_in_expression(expression->array_access.index);
4440 case EXPR_CLASSIFY_TYPE:
4441 count += count_decls_in_expression(expression->classify_type.type_expression);
4445 case EXPR_ALIGNOF: {
4446 expression_t *tp_expression = expression->typeprop.tp_expression;
4447 if (tp_expression != NULL) {
4448 count += count_decls_in_expression(tp_expression);
4454 case EXPR_REFERENCE:
4456 case EXPR_CHARACTER_CONSTANT:
4457 case EXPR_WIDE_CHARACTER_CONSTANT:
4458 case EXPR_STRING_LITERAL:
4459 case EXPR_WIDE_STRING_LITERAL:
4461 case EXPR_BUILTIN_SYMBOL:
4467 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4468 * (or implement all the missing expressions here/implement a walker)
4474 static int count_decls_in_stmts(const statement_t *stmt)
4477 for (; stmt != NULL; stmt = stmt->base.next) {
4478 switch (stmt->kind) {
4479 case STATEMENT_EMPTY:
4482 case STATEMENT_DECLARATION: {
4483 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4484 count += count_local_declarations(decl_stmt->declarations_begin,
4485 decl_stmt->declarations_end->next);
4489 case STATEMENT_COMPOUND: {
4490 const compound_statement_t *const comp =
4492 count += count_decls_in_stmts(comp->statements);
4496 case STATEMENT_IF: {
4497 const if_statement_t *const if_stmt = &stmt->ifs;
4498 count += count_decls_in_expression(if_stmt->condition);
4499 count += count_decls_in_stmts(if_stmt->true_statement);
4500 count += count_decls_in_stmts(if_stmt->false_statement);
4504 case STATEMENT_SWITCH: {
4505 const switch_statement_t *const switch_stmt = &stmt->switchs;
4506 count += count_decls_in_expression(switch_stmt->expression);
4507 count += count_decls_in_stmts(switch_stmt->body);
4511 case STATEMENT_LABEL: {
4512 const label_statement_t *const label_stmt = &stmt->label;
4513 if(label_stmt->statement != NULL) {
4514 count += count_decls_in_stmts(label_stmt->statement);
4519 case STATEMENT_WHILE: {
4520 const while_statement_t *const while_stmt = &stmt->whiles;
4521 count += count_decls_in_expression(while_stmt->condition);
4522 count += count_decls_in_stmts(while_stmt->body);
4526 case STATEMENT_DO_WHILE: {
4527 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4528 count += count_decls_in_expression(do_while_stmt->condition);
4529 count += count_decls_in_stmts(do_while_stmt->body);
4533 case STATEMENT_FOR: {
4534 const for_statement_t *const for_stmt = &stmt->fors;
4535 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4536 count += count_decls_in_expression(for_stmt->initialisation);
4537 count += count_decls_in_expression(for_stmt->condition);
4538 count += count_decls_in_expression(for_stmt->step);
4539 count += count_decls_in_stmts(for_stmt->body);
4543 case STATEMENT_CASE_LABEL: {
4544 const case_label_statement_t *label = &stmt->case_label;
4545 count += count_decls_in_expression(label->expression);
4546 if(label->statement != NULL) {
4547 count += count_decls_in_stmts(label->statement);
4553 case STATEMENT_BREAK:
4554 case STATEMENT_CONTINUE:
4557 case STATEMENT_EXPRESSION: {
4558 const expression_statement_t *expr_stmt = &stmt->expression;
4559 count += count_decls_in_expression(expr_stmt->expression);
4563 case STATEMENT_GOTO:
4564 case STATEMENT_LEAVE:
4565 case STATEMENT_INVALID:
4568 case STATEMENT_RETURN: {
4569 const return_statement_t *ret_stmt = &stmt->returns;
4570 count += count_decls_in_expression(ret_stmt->value);
4574 case STATEMENT_MS_TRY: {
4575 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4576 count += count_decls_in_stmts(try_stmt->try_statement);
4577 if(try_stmt->except_expression != NULL)
4578 count += count_decls_in_expression(try_stmt->except_expression);
4579 count += count_decls_in_stmts(try_stmt->final_statement);
4587 static int get_function_n_local_vars(declaration_t *declaration)
4591 /* count parameters */
4592 count += count_local_declarations(declaration->scope.declarations, NULL);
4594 /* count local variables declared in body */
4595 count += count_decls_in_stmts(declaration->init.statement);
4600 static void initialize_function_parameters(declaration_t *declaration)
4602 ir_graph *irg = current_ir_graph;
4603 ir_node *args = get_irg_args(irg);
4604 ir_node *start_block = get_irg_start_block(irg);
4605 ir_type *function_irtype = get_ir_type(declaration->type);
4608 declaration_t *parameter = declaration->scope.declarations;
4609 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4610 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4611 type_t *type = skip_typeref(parameter->type);
4613 bool needs_entity = parameter->address_taken;
4614 assert(!is_type_array(type));
4615 if(is_type_compound(type)) {
4616 needs_entity = true;
4620 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4621 ident *id = new_id_from_str(parameter->symbol->string);
4622 set_entity_ident(entity, id);
4624 parameter->declaration_kind
4625 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4626 parameter->v.entity = entity;
4630 ir_mode *mode = get_ir_mode(parameter->type);
4632 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4634 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4635 parameter->v.value_number = next_value_number_function;
4636 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4637 ++next_value_number_function;
4639 set_value(parameter->v.value_number, proj);
4644 * Handle additional decl modifiers for IR-graphs
4646 * @param irg the IR-graph
4647 * @param dec_modifiers additional modifiers
4649 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4651 if (decl_modifiers & DM_NORETURN) {
4652 /* TRUE if the declaration includes the Microsoft
4653 __declspec(noreturn) specifier. */
4654 set_irg_additional_property(irg, mtp_property_noreturn);
4656 if (decl_modifiers & DM_NOTHROW) {
4657 /* TRUE if the declaration includes the Microsoft
4658 __declspec(nothrow) specifier. */
4659 set_irg_additional_property(irg, mtp_property_nothrow);
4661 if (decl_modifiers & DM_NAKED) {
4662 /* TRUE if the declaration includes the Microsoft
4663 __declspec(naked) specifier. */
4664 set_irg_additional_property(irg, mtp_property_naked);
4666 if (decl_modifiers & DM_FORCEINLINE) {
4667 /* TRUE if the declaration includes the
4668 Microsoft __forceinline specifier. */
4669 set_irg_inline_property(irg, irg_inline_forced);
4671 if (decl_modifiers & DM_NOINLINE) {
4672 /* TRUE if the declaration includes the Microsoft
4673 __declspec(noinline) specifier. */
4674 set_irg_inline_property(irg, irg_inline_forbidden);
4678 static void create_function(declaration_t *declaration)
4680 ir_entity *function_entity = get_function_entity(declaration);
4682 if(declaration->init.statement == NULL)
4685 current_function_decl = declaration;
4686 current_function_name = NULL;
4687 current_funcsig = NULL;
4689 assert(imature_blocks == NULL);
4690 imature_blocks = NEW_ARR_F(ir_node*, 0);
4692 int n_local_vars = get_function_n_local_vars(declaration);
4693 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4694 ir_node *first_block = get_cur_block();
4696 /* set inline flags */
4697 if (declaration->is_inline)
4698 set_irg_inline_property(irg, irg_inline_recomended);
4699 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4701 next_value_number_function = 0;
4702 initialize_function_parameters(declaration);
4704 statement_to_firm(declaration->init.statement);
4706 ir_node *end_block = get_irg_end_block(irg);
4708 /* do we have a return statement yet? */
4709 if(get_cur_block() != NULL) {
4710 type_t *type = skip_typeref(declaration->type);
4711 assert(is_type_function(type));
4712 const function_type_t *func_type = &type->function;
4713 const type_t *return_type
4714 = skip_typeref(func_type->return_type);
4717 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4718 ret = new_Return(get_store(), 0, NULL);
4721 if(is_type_scalar(return_type)) {
4722 mode = get_ir_mode(func_type->return_type);
4728 /* ยง5.1.2.2.3 main implicitly returns 0 */
4729 if (strcmp(declaration->symbol->string, "main") == 0) {
4730 in[0] = new_Const(mode, get_mode_null(mode));
4732 in[0] = new_Unknown(mode);
4734 ret = new_Return(get_store(), 1, in);
4736 add_immBlock_pred(end_block, ret);
4739 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4740 mature_immBlock(imature_blocks[i]);
4742 DEL_ARR_F(imature_blocks);
4743 imature_blocks = NULL;
4745 mature_immBlock(first_block);
4746 mature_immBlock(end_block);
4748 irg_finalize_cons(irg);
4750 /* finalize the frame type */
4751 ir_type *frame_type = get_irg_frame_type(irg);
4752 int n = get_compound_n_members(frame_type);
4755 for(int i = 0; i < n; ++i) {
4756 ir_entity *entity = get_compound_member(frame_type, i);
4757 ir_type *entity_type = get_entity_type(entity);
4759 int align = get_type_alignment_bytes(entity_type);
4760 if(align > align_all)
4764 misalign = offset % align;
4766 offset += align - misalign;
4770 set_entity_offset(entity, offset);
4771 offset += get_type_size_bytes(entity_type);
4773 set_type_size_bytes(frame_type, offset);
4774 set_type_alignment_bytes(frame_type, align_all);
4779 static void scope_to_firm(scope_t *scope)
4781 /* first pass: create declarations */
4782 declaration_t *declaration = scope->declarations;
4783 for( ; declaration != NULL; declaration = declaration->next) {
4784 if(declaration->namespc != NAMESPACE_NORMAL)
4786 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4787 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4789 if(declaration->symbol == NULL)
4792 type_t *type = skip_typeref(declaration->type);
4793 if(is_type_function(type)) {
4794 get_function_entity(declaration);
4796 create_global_variable(declaration);
4800 /* second pass: create code/initializers */
4801 declaration = scope->declarations;
4802 for( ; declaration != NULL; declaration = declaration->next) {
4803 if(declaration->namespc != NAMESPACE_NORMAL)
4805 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4806 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4808 if(declaration->symbol == NULL)
4811 type_t *type = declaration->type;
4812 if(type->kind == TYPE_FUNCTION) {
4813 create_function(declaration);
4815 assert(declaration->declaration_kind
4816 == DECLARATION_KIND_GLOBAL_VARIABLE);
4817 current_ir_graph = get_const_code_irg();
4818 create_declaration_initializer(declaration);
4823 void init_ast2firm(void)
4825 obstack_init(&asm_obst);
4826 init_atomic_modes();
4828 /* create idents for all known runtime functions */
4829 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4830 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4834 static void init_ir_types(void)
4836 static int ir_types_initialized = 0;
4837 if(ir_types_initialized)
4839 ir_types_initialized = 1;
4841 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4842 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4843 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4845 ir_type_int = get_ir_type(type_int);
4846 ir_type_const_char = get_ir_type(type_const_char);
4847 ir_type_wchar_t = get_ir_type(type_wchar_t);
4848 ir_type_void = get_ir_type(type_void);
4851 void exit_ast2firm(void)
4853 obstack_free(&asm_obst, NULL);
4856 void translation_unit_to_firm(translation_unit_t *unit)
4858 /* just to be sure */
4859 continue_label = NULL;
4861 current_switch_cond = NULL;
4865 scope_to_firm(&unit->scope);