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 get_mode_size_bytes(mode_int);
226 case TYPE_COMPOUND_UNION:
227 case TYPE_COMPOUND_STRUCT:
228 return get_compound_type_size(&type->compound);
230 /* just a pointer to the function */
231 return get_mode_size_bytes(mode_P_code);
233 return get_mode_size_bytes(mode_P_data);
235 return get_array_type_size(&type->array);
237 return get_type_size_const(type->builtin.real_type);
239 panic("type size of bitfield request");
245 panic("Trying to determine size of invalid type");
248 static ir_node *get_type_size(type_t *type)
250 type = skip_typeref(type);
252 if(is_type_array(type) && type->array.is_vla) {
253 ir_node *size_node = type->array.size_node;
254 if(size_node == NULL) {
255 size_node = expression_to_firm(type->array.size_expression);
256 assert(!is_Const(size_node));
257 type->array.size_node = size_node;
260 ir_node *elem_size = get_type_size(type->array.element_type);
261 ir_mode *mode = get_irn_mode(size_node);
262 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
266 ir_mode *mode = get_ir_mode(type_size_t);
268 sym.type_p = get_ir_type(type);
269 return new_SymConst(mode, sym, symconst_type_size);
272 static unsigned count_parameters(const function_type_t *function_type)
276 function_parameter_t *parameter = function_type->parameters;
277 for ( ; parameter != NULL; parameter = parameter->next) {
284 static ir_type *create_atomic_type(const atomic_type_t *type)
286 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
287 atomic_type_kind_t kind = type->akind;
288 ir_mode *mode = _atomic_modes[kind];
289 unsigned alignment = get_atomic_type_alignment(kind);
290 ident *id = get_mode_ident(mode);
291 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
293 if(type->base.alignment > alignment)
294 alignment = type->base.alignment;
296 set_type_alignment_bytes(irtype, alignment);
301 static ir_type *create_method_type(const function_type_t *function_type)
303 type_t *return_type = function_type->return_type;
305 ident *id = unique_ident("functiontype");
306 int n_parameters = count_parameters(function_type);
307 int n_results = return_type == type_void ? 0 : 1;
308 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
309 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
311 if(return_type != type_void) {
312 ir_type *restype = get_ir_type(return_type);
313 set_method_res_type(irtype, 0, restype);
316 function_parameter_t *parameter = function_type->parameters;
318 for( ; parameter != NULL; parameter = parameter->next) {
319 ir_type *p_irtype = get_ir_type(parameter->type);
320 set_method_param_type(irtype, n, p_irtype);
324 if(function_type->variadic || function_type->unspecified_parameters) {
325 set_method_variadicity(irtype, variadicity_variadic);
331 static ir_type *create_pointer_type(pointer_type_t *type)
333 type_t *points_to = type->points_to;
334 ir_type *ir_points_to;
335 /* Avoid endless recursion if the points_to type contains this poiner type
336 * again (might be a struct). We therefore first create a void* pointer
337 * and then set the real points_to type
339 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
340 ir_type *ir_type = new_d_type_pointer(unique_ident("pointer"),
341 ir_type_void, mode_P_data, dbgi);
342 type->base.firm_type = ir_type;
344 ir_points_to = get_ir_type(points_to);
345 set_pointer_points_to_type(ir_type, ir_points_to);
350 static ir_type *create_array_type(array_type_t *type)
352 type_t *element_type = type->element_type;
353 ir_type *ir_element_type = get_ir_type(element_type);
355 ident *id = unique_ident("array");
356 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
357 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
359 const int align = get_type_alignment_bytes(ir_element_type);
360 set_type_alignment_bytes(ir_type, align);
362 if(type->size_constant) {
363 int n_elements = type->size;
365 set_array_bounds_int(ir_type, 0, 0, n_elements);
367 size_t elemsize = get_type_size_bytes(ir_element_type);
368 if(elemsize % align > 0) {
369 elemsize += align - (elemsize % align);
371 set_type_size_bytes(ir_type, n_elements * elemsize);
373 set_array_lower_bound_int(ir_type, 0, 0);
375 set_type_state(ir_type, layout_fixed);
381 * Return the signed integer type of size bits.
383 * @param size the size
385 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
388 static ir_mode *s_modes[64 + 1] = {NULL, };
392 if (size <= 0 || size > 64)
395 mode = s_modes[size];
399 snprintf(name, sizeof(name), "bf_I%u", size);
400 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
401 size <= 32 ? 32 : size );
402 s_modes[size] = mode;
406 snprintf(name, sizeof(name), "I%u", size);
407 ident *id = new_id_from_str(name);
408 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
409 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
410 set_primitive_base_type(res, base_tp);
416 * Return the unsigned integer type of size bits.
418 * @param size the size
420 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
423 static ir_mode *u_modes[64 + 1] = {NULL, };
427 if (size <= 0 || size > 64)
430 mode = u_modes[size];
434 snprintf(name, sizeof(name), "bf_U%u", size);
435 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
436 size <= 32 ? 32 : size );
437 u_modes[size] = mode;
442 snprintf(name, sizeof(name), "U%u", size);
443 ident *id = new_id_from_str(name);
444 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
445 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
446 set_primitive_base_type(res, base_tp);
451 static ir_type *create_bitfield_type(bitfield_type_t *const type)
453 type_t *base = skip_typeref(type->base_type);
454 assert(base->kind == TYPE_ATOMIC);
455 ir_type *irbase = get_ir_type(base);
457 unsigned size = fold_constant(type->size);
459 assert(!is_type_float(base));
460 if(is_type_signed(base)) {
461 return get_signed_int_type_for_bit_size(irbase, size);
463 return get_unsigned_int_type_for_bit_size(irbase, size);
467 #define INVALID_TYPE ((ir_type_ptr)-1)
469 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
470 size_t *outer_offset, size_t *outer_align);
472 static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype,
473 size_t *outer_offset, size_t *outer_align)
475 declaration_t *declaration = type->declaration;
476 if(declaration->v.irtype != NULL) {
477 return declaration->v.irtype;
480 size_t align_all = 1;
482 size_t bit_offset = 0;
484 symbol_t *symbol = declaration->symbol;
487 id = unique_ident(symbol->string);
489 id = unique_ident("__anonymous_struct");
491 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
493 irtype = new_d_type_struct(id, dbgi);
495 declaration->v.irtype = irtype;
496 type->base.firm_type = irtype;
498 offset = *outer_offset;
499 align_all = *outer_align;
502 declaration_t *entry = declaration->scope.declarations;
503 for( ; entry != NULL; entry = entry->next) {
504 if(entry->namespc != NAMESPACE_NORMAL)
507 symbol_t *symbol = entry->symbol;
508 type_t *entry_type = skip_typeref(entry->type);
509 dbg_info *dbgi = get_dbg_info(&entry->source_position);
512 ident = new_id_from_str(symbol->string);
514 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
515 create_struct_type(&entry_type->compound, irtype, &offset,
518 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
519 create_union_type(&entry_type->compound, irtype, &offset,
523 assert(entry_type->kind == TYPE_BITFIELD);
525 ident = unique_ident("anon");
528 ir_type *base_irtype;
529 if(entry_type->kind == TYPE_BITFIELD) {
530 base_irtype = get_ir_type(entry_type->bitfield.base_type);
532 base_irtype = get_ir_type(entry_type);
535 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
536 size_t misalign = offset % entry_alignment;
538 ir_type *entry_irtype = get_ir_type(entry_type);
539 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
542 size_t bits_remainder;
543 if(entry_type->kind == TYPE_BITFIELD) {
544 size_t size_bits = fold_constant(entry_type->bitfield.size);
545 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
547 if(size_bits > rest_size_bits) {
548 /* start a new bucket */
549 offset += entry_alignment - misalign;
555 /* put into current bucket */
556 base = offset - misalign;
557 bits_remainder = misalign * 8 + bit_offset;
560 offset += size_bits / 8;
561 bit_offset = bit_offset + (size_bits % 8);
563 size_t entry_size = get_type_size_bytes(base_irtype);
564 if(misalign > 0 || bit_offset > 0)
565 offset += entry_alignment - misalign;
569 offset += entry_size;
573 if(entry_alignment > align_all) {
574 if(entry_alignment % align_all != 0) {
575 panic("uneven alignments not supported yet");
577 align_all = entry_alignment;
580 set_entity_offset(entity, base);
581 set_entity_offset_bits_remainder(entity,
582 (unsigned char) bits_remainder);
583 //add_struct_member(irtype, entity);
584 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
585 assert(entry->v.entity == NULL);
586 entry->v.entity = entity;
589 size_t misalign = offset % align_all;
590 if(misalign > 0 || bit_offset > 0) {
591 offset += align_all - misalign;
594 if(outer_offset != NULL) {
595 *outer_offset = offset;
596 *outer_align = align_all;
598 set_type_alignment_bytes(irtype, align_all);
599 set_type_size_bytes(irtype, offset);
600 set_type_state(irtype, layout_fixed);
606 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
607 size_t *outer_offset, size_t *outer_align)
609 declaration_t *declaration = type->declaration;
610 if(declaration->v.irtype != NULL) {
611 return declaration->v.irtype;
614 size_t align_all = 1;
619 symbol_t *symbol = declaration->symbol;
622 id = unique_ident(symbol->string);
624 id = unique_ident("__anonymous_union");
626 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
628 irtype = new_d_type_union(id, dbgi);
630 declaration->v.irtype = irtype;
631 type->base.firm_type = irtype;
633 offset = *outer_offset;
634 align_all = *outer_align;
637 type->base.firm_type = irtype;
639 declaration_t *entry = declaration->scope.declarations;
640 for( ; entry != NULL; entry = entry->next) {
641 if(entry->namespc != NAMESPACE_NORMAL)
644 symbol_t *symbol = entry->symbol;
645 type_t *entry_type = skip_typeref(entry->type);
646 ir_type *entry_ir_type = get_ir_type(entry_type);
650 ident = new_id_from_str(entry->symbol->string);
652 size_t offs = offset;
653 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
654 create_struct_type(&entry_type->compound, irtype, &offs,
657 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
658 create_union_type(&entry_type->compound, irtype, &offs,
662 panic("anonymous union member must be struct or union");
664 size_t entry_size = offs - offset;
665 if(entry_size > size) {
668 ident = unique_ident("anon");
671 size_t entry_size = get_type_size_bytes(entry_ir_type);
672 size_t entry_alignment = get_type_alignment_bytes(entry_ir_type);
674 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
675 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
677 //add_union_member(irtype, entity);
678 set_entity_offset(entity, 0);
679 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
680 assert(entry->v.entity == NULL);
681 entry->v.entity = entity;
683 if(entry_size > size) {
686 if(entry_alignment > align_all) {
687 if(entry_alignment % align_all != 0) {
688 panic("Uneven alignments not supported yet");
690 align_all = entry_alignment;
694 if(outer_offset != NULL) {
695 assert(*outer_offset == offset);
697 size_t misalign = offset % align_all;
699 size += align_all - misalign;
700 *outer_offset += size;
702 if(align_all > *outer_align) {
703 if(align_all % *outer_align != 0) {
704 panic("uneven alignments not supported yet");
706 *outer_align = align_all;
709 set_type_alignment_bytes(irtype, align_all);
710 set_type_size_bytes(irtype, size);
711 set_type_state(irtype, layout_fixed);
712 declaration->v.irtype = irtype;
718 static ir_type *create_enum_type(enum_type_t *const type)
720 type->base.firm_type = ir_type_int;
722 ir_mode *const mode = mode_int;
723 tarval *const one = get_mode_one(mode);
724 tarval * tv_next = get_tarval_null(mode);
726 declaration_t *declaration = type->declaration->next;
727 for (; declaration != NULL; declaration = declaration->next) {
728 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
731 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
733 expression_t *const init = declaration->init.enum_value;
735 ir_node *const cnst = expression_to_firm(init);
736 if (!is_Const(cnst)) {
737 panic("couldn't fold constant");
739 tv_next = get_Const_tarval(cnst);
741 declaration->v.enum_val = tv_next;
742 tv_next = tarval_add(tv_next, one);
748 static ir_type *get_ir_type(type_t *type)
750 assert(type != NULL);
752 type = skip_typeref(type);
754 if(type->base.firm_type != NULL) {
755 assert(type->base.firm_type != INVALID_TYPE);
756 return type->base.firm_type;
759 ir_type *firm_type = NULL;
762 panic("error type occured");
764 firm_type = create_atomic_type(&type->atomic);
767 firm_type = create_method_type(&type->function);
770 firm_type = create_pointer_type(&type->pointer);
773 firm_type = create_array_type(&type->array);
775 case TYPE_COMPOUND_STRUCT:
776 firm_type = create_struct_type(&type->compound, NULL, NULL, NULL);
778 case TYPE_COMPOUND_UNION:
779 firm_type = create_union_type(&type->compound, NULL, NULL, NULL);
782 firm_type = create_enum_type(&type->enumt);
785 firm_type = get_ir_type(type->builtin.real_type);
788 firm_type = create_bitfield_type(&type->bitfield);
796 if(firm_type == NULL)
797 panic("unknown type found");
799 type->base.firm_type = firm_type;
803 static inline ir_mode *get_ir_mode(type_t *type)
805 ir_type *irtype = get_ir_type(type);
807 /* firm doesn't report a mode for arrays somehow... */
808 if(is_Array_type(irtype)) {
812 ir_mode *mode = get_type_mode(irtype);
813 assert(mode != NULL);
817 static ident *predef_idents[rts_max];
819 /** Names of the runtime functions. */
820 static const struct {
821 int id; /**< the rts id */
822 int n_res; /**< number of return values */
823 const char *name; /**< the name of the rts function */
824 int n_params; /**< number of parameters */
825 unsigned flags; /**< language flags */
827 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
828 { rts_abort, 0, "abort", 0, _C89 },
829 { rts_abs, 1, "abs", 1, _C89 },
830 { rts_labs, 1, "labs", 1, _C89 },
831 { rts_llabs, 1, "llabs", 1, _C99 },
832 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
834 { rts_fabs, 1, "fabs", 1, _C89 },
835 { rts_sqrt, 1, "sqrt", 1, _C89 },
836 { rts_cbrt, 1, "cbrt", 1, _C99 },
837 { rts_exp, 1, "exp", 1, _C89 },
838 { rts_exp2, 1, "exp2", 1, _C89 },
839 { rts_exp10, 1, "exp10", 1, _GNUC },
840 { rts_log, 1, "log", 1, _C89 },
841 { rts_log2, 1, "log2", 1, _C89 },
842 { rts_log10, 1, "log10", 1, _C89 },
843 { rts_pow, 1, "pow", 2, _C89 },
844 { rts_sin, 1, "sin", 1, _C89 },
845 { rts_cos, 1, "cos", 1, _C89 },
846 { rts_tan, 1, "tan", 1, _C89 },
847 { rts_asin, 1, "asin", 1, _C89 },
848 { rts_acos, 1, "acos", 1, _C89 },
849 { rts_atan, 1, "atan", 1, _C89 },
850 { rts_sinh, 1, "sinh", 1, _C89 },
851 { rts_cosh, 1, "cosh", 1, _C89 },
852 { rts_tanh, 1, "tanh", 1, _C89 },
854 { rts_fabsf, 1, "fabsf", 1, _C99 },
855 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
856 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
857 { rts_expf, 1, "expf", 1, _C99 },
858 { rts_exp2f, 1, "exp2f", 1, _C99 },
859 { rts_exp10f, 1, "exp10f", 1, _GNUC },
860 { rts_logf, 1, "logf", 1, _C99 },
861 { rts_log2f, 1, "log2f", 1, _C99 },
862 { rts_log10f, 1, "log10f", 1, _C99 },
863 { rts_powf, 1, "powf", 2, _C99 },
864 { rts_sinf, 1, "sinf", 1, _C99 },
865 { rts_cosf, 1, "cosf", 1, _C99 },
866 { rts_tanf, 1, "tanf", 1, _C99 },
867 { rts_asinf, 1, "asinf", 1, _C99 },
868 { rts_acosf, 1, "acosf", 1, _C99 },
869 { rts_atanf, 1, "atanf", 1, _C99 },
870 { rts_sinhf, 1, "sinhf", 1, _C99 },
871 { rts_coshf, 1, "coshf", 1, _C99 },
872 { rts_tanhf, 1, "tanhf", 1, _C99 },
874 { rts_fabsl, 1, "fabsl", 1, _C99 },
875 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
876 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
877 { rts_expl, 1, "expl", 1, _C99 },
878 { rts_exp2l, 1, "exp2l", 1, _C99 },
879 { rts_exp10l, 1, "exp10l", 1, _GNUC },
880 { rts_logl, 1, "logl", 1, _C99 },
881 { rts_log2l, 1, "log2l", 1, _C99 },
882 { rts_log10l, 1, "log10l", 1, _C99 },
883 { rts_powl, 1, "powl", 2, _C99 },
884 { rts_sinl, 1, "sinl", 1, _C99 },
885 { rts_cosl, 1, "cosl", 1, _C99 },
886 { rts_tanl, 1, "tanl", 1, _C99 },
887 { rts_asinl, 1, "asinl", 1, _C99 },
888 { rts_acosl, 1, "acosl", 1, _C99 },
889 { rts_atanl, 1, "atanl", 1, _C99 },
890 { rts_sinhl, 1, "sinhl", 1, _C99 },
891 { rts_coshl, 1, "coshl", 1, _C99 },
892 { rts_tanhl, 1, "tanhl", 1, _C99 },
894 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
895 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
896 { rts_strcmp, 1, "strcmp", 2, _C89 },
897 { rts_strncmp, 1, "strncmp", 3, _C89 }
900 static ir_entity* get_function_entity(declaration_t *declaration)
902 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
903 return declaration->v.entity;
904 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
906 symbol_t *symbol = declaration->symbol;
907 ident *id = new_id_from_str(symbol->string);
909 ir_type *global_type = get_glob_type();
910 ir_type *ir_type_method = get_ir_type(declaration->type);
911 assert(is_Method_type(ir_type_method));
913 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
914 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
915 set_entity_ld_ident(entity, id);
916 if(declaration->storage_class == STORAGE_CLASS_STATIC
917 || declaration->is_inline) {
918 set_entity_visibility(entity, visibility_local);
919 } else if(declaration->init.statement != NULL) {
920 set_entity_visibility(entity, visibility_external_visible);
922 set_entity_visibility(entity, visibility_external_allocated);
924 /* We should check for file scope here, but as long as we compile C only
925 this is not needed. */
926 int n_params = get_method_n_params(ir_type_method);
927 int n_res = get_method_n_ress(ir_type_method);
930 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
931 /* found abort(), store for later */
935 if (! firm_opt.freestanding) {
936 /* check for a known runtime function */
937 for (i = 0; i < rts_max; ++i) {
938 /* ignore those rts functions not necessary needed for current mode */
939 if ((c_mode & rts_data[i].flags) == 0)
941 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
942 id == predef_idents[rts_data[i].id])
943 rts_entities[rts_data[i].id] = entity;
948 set_entity_allocation(entity, allocation_static);
950 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
951 declaration->v.entity = entity;
956 static ir_node *const_to_firm(const const_expression_t *cnst)
958 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
959 ir_mode *mode = get_ir_mode(cnst->base.type);
964 if(mode_is_float(mode)) {
965 tv = new_tarval_from_double(cnst->v.float_value, mode);
967 if(mode_is_signed(mode)) {
968 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
970 len = snprintf(buf, sizeof(buf), "%llu",
971 (unsigned long long) cnst->v.int_value);
973 tv = new_tarval_from_str(buf, len, mode);
976 return new_d_Const(dbgi, mode, tv);
979 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
981 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
982 ir_mode *mode = get_ir_mode(cnst->base.type);
985 for (size_t i = 0; i < cnst->v.character.size; ++i) {
986 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
989 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
990 tarval *tv = new_tarval_from_str(buf, len, mode);
992 return new_d_Const(dbgi, mode, tv);
995 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
997 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
998 ir_mode *mode = get_ir_mode(cnst->base.type);
1000 long long int v = cnst->v.wide_character.begin[0];
1003 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1004 tarval *tv = new_tarval_from_str(buf, len, mode);
1006 return new_d_Const(dbgi, mode, tv);
1009 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1012 assert(entity != NULL);
1013 union symconst_symbol sym;
1014 sym.entity_p = entity;
1015 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1018 static ir_node *string_to_firm(const source_position_t *const src_pos,
1019 const char *const id_prefix,
1020 const string_t *const value)
1022 ir_type *const global_type = get_glob_type();
1023 dbg_info *const dbgi = get_dbg_info(src_pos);
1024 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1025 ir_type_const_char, dbgi);
1027 ident *const id = unique_ident(id_prefix);
1028 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1029 set_entity_ld_ident(entity, id);
1030 set_entity_variability(entity, variability_constant);
1031 set_entity_allocation(entity, allocation_static);
1033 ir_type *const elem_type = ir_type_const_char;
1034 ir_mode *const mode = get_type_mode(elem_type);
1036 const char* const string = value->begin;
1037 const size_t slen = value->size;
1039 set_array_lower_bound_int(type, 0, 0);
1040 set_array_upper_bound_int(type, 0, slen);
1041 set_type_size_bytes(type, slen);
1042 set_type_state(type, layout_fixed);
1044 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1045 for(size_t i = 0; i < slen; ++i) {
1046 tvs[i] = new_tarval_from_long(string[i], mode);
1049 set_array_entity_values(entity, tvs, slen);
1052 return create_symconst(dbgi, mode_P_data, entity);
1055 static ir_node *string_literal_to_firm(
1056 const string_literal_expression_t* literal)
1058 return string_to_firm(&literal->base.source_position, "Lstr",
1062 static ir_node *wide_string_literal_to_firm(
1063 const wide_string_literal_expression_t* const literal)
1065 ir_type *const global_type = get_glob_type();
1066 ir_type *const elem_type = ir_type_wchar_t;
1067 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1068 ir_type *const type = new_d_type_array(unique_ident("strtype"), 1,
1071 ident *const id = unique_ident("Lstr");
1072 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1073 set_entity_ld_ident(entity, id);
1074 set_entity_variability(entity, variability_constant);
1075 set_entity_allocation(entity, allocation_static);
1077 ir_mode *const mode = get_type_mode(elem_type);
1079 const wchar_rep_t *const string = literal->value.begin;
1080 const size_t slen = literal->value.size;
1082 set_array_lower_bound_int(type, 0, 0);
1083 set_array_upper_bound_int(type, 0, slen);
1084 set_type_size_bytes(type, slen);
1085 set_type_state(type, layout_fixed);
1087 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1088 for(size_t i = 0; i < slen; ++i) {
1089 tvs[i] = new_tarval_from_long(string[i], mode);
1092 set_array_entity_values(entity, tvs, slen);
1095 return create_symconst(dbgi, mode_P_data, entity);
1098 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1099 dbg_info *const dbgi)
1101 ir_type *irtype = get_ir_type(type);
1102 if (is_compound_type(irtype)
1103 || is_Method_type(irtype)
1104 || is_Array_type(irtype)) {
1108 ir_mode *const mode = get_type_mode(irtype);
1109 ir_node *const memory = get_store();
1110 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1111 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1112 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1114 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1115 set_Load_volatility(load, volatility_is_volatile);
1118 set_store(load_mem);
1122 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1124 ir_mode *mode = get_irn_mode(node);
1126 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1128 if(!mode_is_float(mode))
1131 /* check if there is already a Conv */
1132 if (get_irn_op(node) == op_Conv) {
1133 /* convert it into a strict Conv */
1134 set_Conv_strict(node, 1);
1138 /* otherwise create a new one */
1139 return new_d_strictConv(dbgi, node, mode);
1142 static ir_node *get_global_var_address(dbg_info *const dbgi,
1143 const declaration_t *const decl)
1145 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1147 ir_entity *const entity = decl->v.entity;
1148 switch ((storage_class_tag_t)decl->storage_class) {
1149 case STORAGE_CLASS_THREAD:
1150 case STORAGE_CLASS_THREAD_EXTERN:
1151 case STORAGE_CLASS_THREAD_STATIC: {
1152 ir_node *const no_mem = new_NoMem();
1153 ir_node *const tls = get_irg_tls(current_ir_graph);
1154 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1158 return create_symconst(dbgi, mode_P_data, entity);
1162 /* Returns the correct base address depending on whether it is a parameter or a
1163 * normal local variable */
1164 static ir_node *get_local_frame(ir_entity *const ent)
1166 ir_graph *const irg = current_ir_graph;
1167 const ir_type *const owner = get_entity_owner(ent);
1168 if (owner == get_irg_frame_type(irg)) {
1169 return get_irg_frame(irg);
1171 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1172 return get_irg_value_param_base(irg);
1176 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1178 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1179 declaration_t *declaration = ref->declaration;
1180 type_t *type = skip_typeref(declaration->type);
1182 switch((declaration_kind_t) declaration->declaration_kind) {
1183 case DECLARATION_KIND_UNKNOWN:
1184 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1190 case DECLARATION_KIND_ENUM_ENTRY: {
1191 ir_mode *const mode = get_ir_mode(type);
1192 return new_Const(mode, declaration->v.enum_val);
1195 case DECLARATION_KIND_LOCAL_VARIABLE: {
1196 ir_mode *const mode = get_ir_mode(type);
1197 return get_value(declaration->v.value_number, mode);
1199 case DECLARATION_KIND_FUNCTION: {
1200 ir_mode *const mode = get_ir_mode(type);
1201 return create_symconst(dbgi, mode, declaration->v.entity);
1203 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1204 ir_node *const addr = get_global_var_address(dbgi, declaration);
1205 return deref_address(declaration->type, addr, dbgi);
1208 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1209 ir_entity *entity = declaration->v.entity;
1210 ir_node *frame = get_local_frame(entity);
1211 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1212 return deref_address(declaration->type, sel, dbgi);
1215 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1216 return declaration->v.vla_base;
1218 case DECLARATION_KIND_COMPOUND_MEMBER:
1219 case DECLARATION_KIND_LABEL_BLOCK:
1220 panic("not implemented reference type");
1223 panic("reference to declaration with unknown type found");
1226 static ir_node *reference_addr(const reference_expression_t *ref)
1228 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1229 declaration_t *declaration = ref->declaration;
1231 switch((declaration_kind_t) declaration->declaration_kind) {
1232 case DECLARATION_KIND_UNKNOWN:
1234 case DECLARATION_KIND_LOCAL_VARIABLE:
1235 panic("local variable without entity has no address");
1236 case DECLARATION_KIND_FUNCTION: {
1237 type_t *const type = skip_typeref(ref->base.type);
1238 ir_mode *const mode = get_ir_mode(type);
1239 return create_symconst(dbgi, mode, declaration->v.entity);
1241 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1242 ir_node *const addr = get_global_var_address(dbgi, declaration);
1245 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1246 ir_entity *entity = declaration->v.entity;
1247 ir_node *frame = get_local_frame(entity);
1248 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1253 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1254 return declaration->v.vla_base;
1256 case DECLARATION_KIND_ENUM_ENTRY:
1257 panic("trying to reference enum entry");
1259 case DECLARATION_KIND_COMPOUND_MEMBER:
1260 case DECLARATION_KIND_LABEL_BLOCK:
1261 panic("not implemented reference type");
1264 panic("reference to declaration with unknown type found");
1267 static ir_node *process_builtin_call(const call_expression_t *call)
1269 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1271 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1272 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1274 type_t *type = skip_typeref(builtin->base.type);
1275 assert(is_type_pointer(type));
1277 type_t *function_type = skip_typeref(type->pointer.points_to);
1278 symbol_t *symbol = builtin->symbol;
1280 switch(symbol->ID) {
1281 case T___builtin_alloca: {
1282 if(call->arguments == NULL || call->arguments->next != NULL) {
1283 panic("invalid number of parameters on __builtin_alloca");
1285 expression_t *argument = call->arguments->expression;
1286 ir_node *size = expression_to_firm(argument);
1288 ir_node *store = get_store();
1289 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1291 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1293 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1297 case T___builtin_nan:
1298 case T___builtin_nanf:
1299 case T___builtin_nand: {
1300 /* Ignore string for now... */
1301 assert(is_type_function(function_type));
1302 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1303 tarval *tv = get_mode_NAN(mode);
1304 ir_node *res = new_d_Const(dbgi, mode, tv);
1307 case T___builtin_va_end:
1310 panic("Unsupported builtin found\n");
1314 static ir_node *call_expression_to_firm(const call_expression_t *call)
1316 assert(get_cur_block() != NULL);
1318 expression_t *function = call->function;
1319 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1320 return process_builtin_call(call);
1322 ir_node *callee = expression_to_firm(function);
1324 type_t *type = skip_typeref(function->base.type);
1325 assert(is_type_pointer(type));
1326 pointer_type_t *pointer_type = &type->pointer;
1327 type_t *points_to = skip_typeref(pointer_type->points_to);
1328 assert(is_type_function(points_to));
1329 function_type_t *function_type = &points_to->function;
1331 int n_parameters = 0;
1332 call_argument_t *argument = call->arguments;
1333 for( ; argument != NULL; argument = argument->next) {
1337 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1339 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1340 ir_type *new_method_type = NULL;
1341 if(function_type->variadic || function_type->unspecified_parameters) {
1342 /* we need to construct a new method type matching the call
1344 int n_res = get_method_n_ress(ir_method_type);
1345 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1346 new_method_type = new_d_type_method(unique_ident("calltype"),
1347 n_parameters, n_res, dbgi);
1348 set_method_calling_convention(new_method_type,
1349 get_method_calling_convention(ir_method_type));
1350 set_method_additional_properties(new_method_type,
1351 get_method_additional_properties(ir_method_type));
1353 for(int i = 0; i < n_res; ++i) {
1354 set_method_res_type(new_method_type, i,
1355 get_method_res_type(ir_method_type, i));
1358 ir_node *in[n_parameters];
1360 argument = call->arguments;
1362 for( ; argument != NULL; argument = argument->next) {
1363 expression_t *expression = argument->expression;
1364 ir_node *arg_node = expression_to_firm(expression);
1366 arg_node = do_strict_conv(dbgi, arg_node);
1369 if(new_method_type != NULL) {
1370 ir_type *irtype = get_ir_type(expression->base.type);
1371 set_method_param_type(new_method_type, n, irtype);
1376 assert(n == n_parameters);
1378 if(new_method_type != NULL)
1379 ir_method_type = new_method_type;
1381 ir_node *store = get_store();
1382 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1384 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1387 type_t *return_type = skip_typeref(function_type->return_type);
1388 ir_node *result = NULL;
1390 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1392 if(is_type_scalar(return_type)) {
1393 mode = get_ir_mode(return_type);
1397 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1398 result = new_d_Proj(dbgi, resproj, mode, 0);
1404 static void statement_to_firm(statement_t *statement);
1405 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1407 static ir_node *expression_to_addr(const expression_t *expression);
1408 static void create_condition_evaluation(const expression_t *expression,
1409 ir_node *true_block,
1410 ir_node *false_block);
1412 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1415 value = do_strict_conv(dbgi, value);
1417 ir_node *memory = get_store();
1419 if(is_type_scalar(type)) {
1420 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1421 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1422 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1423 set_Store_volatility(store, volatility_is_volatile);
1424 set_store(store_mem);
1426 ir_type *irtype = get_ir_type(type);
1427 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1428 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1429 set_store(copyb_mem);
1433 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1435 tarval *all_one = get_mode_all_one(mode);
1436 int mode_size = get_mode_size_bits(mode);
1438 assert(offset >= 0 && size >= 0);
1439 assert(offset + size <= mode_size);
1440 if(size == mode_size) {
1444 long shiftr = get_mode_size_bits(mode) - size;
1445 long shiftl = offset;
1446 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1447 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1448 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1449 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1454 static void bitfield_store_to_firm(const unary_expression_t *expression,
1457 expression_t *select = expression->value;
1458 assert(select->kind == EXPR_SELECT);
1459 type_t *type = select->base.type;
1460 assert(type->kind == TYPE_BITFIELD);
1461 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1462 ir_node *addr = expression_to_addr(select);
1464 assert(get_irn_mode(value) == mode);
1466 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1468 /* kill upper bits of value and shift to right position */
1469 ir_entity *entity = select->select.compound_entry->v.entity;
1470 int bitoffset = get_entity_offset_bits_remainder(entity);
1471 ir_type *entity_type = get_entity_type(entity);
1472 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1474 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1475 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1476 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1477 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1478 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1479 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1481 /* load current value */
1482 ir_node *mem = get_store();
1483 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1484 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1485 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1486 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1487 tarval *inv_mask = tarval_not(shift_mask);
1488 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1489 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1491 /* construct new value and store */
1492 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1493 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1494 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1495 set_store(store_mem);
1497 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1498 set_Load_volatility(load, volatility_is_volatile);
1499 set_Store_volatility(store, volatility_is_volatile);
1503 static void set_value_for_expression(const expression_t *expression,
1506 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1507 value = do_strict_conv(dbgi, value);
1509 if(expression->kind == EXPR_REFERENCE) {
1510 const reference_expression_t *ref = &expression->reference;
1512 declaration_t *declaration = ref->declaration;
1513 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1514 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1515 set_value(declaration->v.value_number, value);
1520 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1521 bitfield_store_to_firm(&expression->unary, value);
1525 ir_node *addr = expression_to_addr(expression);
1526 type_t *type = skip_typeref(expression->base.type);
1527 assign_value(dbgi, addr, type, value);
1530 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1532 ir_mode *value_mode = get_irn_mode(value);
1534 if (value_mode == dest_mode || is_Bad(value))
1537 if(dest_mode == mode_b) {
1538 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1539 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1540 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1544 return new_d_Conv(dbgi, value, dest_mode);
1547 static ir_node *create_incdec(const unary_expression_t *expression)
1549 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1550 type_t *type = skip_typeref(expression->base.type);
1551 ir_mode *mode = get_ir_mode(type);
1552 expression_t *value = expression->value;
1554 ir_node *value_node = expression_to_firm(value);
1557 if(is_type_pointer(type)) {
1558 pointer_type_t *pointer_type = &type->pointer;
1559 offset = get_type_size(pointer_type->points_to);
1561 assert(is_type_arithmetic(type));
1562 offset = new_Const(mode, get_mode_one(mode));
1565 switch(expression->base.kind) {
1566 case EXPR_UNARY_POSTFIX_INCREMENT: {
1567 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1568 set_value_for_expression(value, new_value);
1571 case EXPR_UNARY_POSTFIX_DECREMENT: {
1572 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1573 set_value_for_expression(value, new_value);
1576 case EXPR_UNARY_PREFIX_INCREMENT: {
1577 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1578 set_value_for_expression(value, new_value);
1581 case EXPR_UNARY_PREFIX_DECREMENT: {
1582 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1583 set_value_for_expression(value, new_value);
1587 panic("no incdec expr in create_incdec");
1592 static bool is_local_variable(expression_t *expression)
1594 if (expression->kind != EXPR_REFERENCE)
1596 reference_expression_t *ref_expr = &expression->reference;
1597 declaration_t *declaration = ref_expr->declaration;
1598 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1601 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1604 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1605 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1606 case EXPR_BINARY_NOTEQUAL:
1607 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1608 case EXPR_BINARY_ISLESS:
1609 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1610 case EXPR_BINARY_ISLESSEQUAL:
1611 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1612 case EXPR_BINARY_ISGREATER:
1613 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1614 case EXPR_BINARY_ISGREATEREQUAL:
1615 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1616 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1621 panic("trying to get pn_Cmp from non-comparison binexpr type");
1625 * Handle the assume optimizer hint: check if a Confirm
1626 * node can be created.
1628 * @param dbi debug info
1629 * @param expr the IL assume expression
1631 * we support here only some simple cases:
1636 static ir_node *handle_assume_compare(dbg_info *dbi,
1637 const binary_expression_t *expression)
1639 expression_t *op1 = expression->left;
1640 expression_t *op2 = expression->right;
1641 declaration_t *var2, *var = NULL;
1642 ir_node *res = NULL;
1645 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1647 if (is_local_variable(op1) && is_local_variable(op2)) {
1648 var = op1->reference.declaration;
1649 var2 = op2->reference.declaration;
1651 type_t *const type = skip_typeref(var->type);
1652 ir_mode *const mode = get_ir_mode(type);
1654 ir_node *const irn1 = get_value(var->v.value_number, mode);
1655 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1657 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1658 set_value(var2->v.value_number, res);
1660 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1661 set_value(var->v.value_number, res);
1667 if (is_local_variable(op1) && is_constant_expression(op2)) {
1668 var = op1->reference.declaration;
1670 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1671 cmp_val = get_inversed_pnc(cmp_val);
1672 var = op2->reference.declaration;
1677 type_t *const type = skip_typeref(var->type);
1678 ir_mode *const mode = get_ir_mode(type);
1680 res = get_value(var->v.value_number, mode);
1681 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1682 set_value(var->v.value_number, res);
1688 * Handle the assume optimizer hint.
1690 * @param dbi debug info
1691 * @param expr the IL assume expression
1693 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1694 switch(expression->kind) {
1695 case EXPR_BINARY_EQUAL:
1696 case EXPR_BINARY_NOTEQUAL:
1697 case EXPR_BINARY_LESS:
1698 case EXPR_BINARY_LESSEQUAL:
1699 case EXPR_BINARY_GREATER:
1700 case EXPR_BINARY_GREATEREQUAL:
1701 return handle_assume_compare(dbi, &expression->binary);
1707 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1709 expression_t *select = expression->value;
1710 assert(select->kind == EXPR_SELECT);
1712 type_t *type = select->base.type;
1713 assert(type->kind == TYPE_BITFIELD);
1714 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1715 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1716 ir_node *addr = expression_to_addr(select);
1717 ir_node *mem = get_store();
1718 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1719 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1720 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1722 load_res = create_conv(dbgi, load_res, mode_int);
1724 set_store(load_mem);
1726 /* kill upper bits */
1727 ir_entity *entity = select->select.compound_entry->v.entity;
1728 int bitoffset = get_entity_offset_bits_remainder(entity);
1729 ir_type *entity_type = get_entity_type(entity);
1730 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1731 long shift_bitsl = machine_size - bitoffset - bitsize;
1732 assert(shift_bitsl >= 0);
1733 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1734 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1735 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1737 long shift_bitsr = bitoffset + shift_bitsl;
1738 assert(shift_bitsr <= (long) machine_size);
1739 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1740 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1742 if(mode_is_signed(mode)) {
1743 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1745 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1748 return create_conv(dbgi, shiftr, mode);
1751 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1753 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1754 type_t *type = skip_typeref(expression->base.type);
1756 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1757 return expression_to_addr(expression->value);
1759 const expression_t *value = expression->value;
1761 switch(expression->base.kind) {
1762 case EXPR_UNARY_NEGATE: {
1763 ir_node *value_node = expression_to_firm(value);
1764 ir_mode *mode = get_ir_mode(type);
1765 return new_d_Minus(dbgi, value_node, mode);
1767 case EXPR_UNARY_PLUS:
1768 return expression_to_firm(value);
1769 case EXPR_UNARY_BITWISE_NEGATE: {
1770 ir_node *value_node = expression_to_firm(value);
1771 ir_mode *mode = get_ir_mode(type);
1772 return new_d_Not(dbgi, value_node, mode);
1774 case EXPR_UNARY_NOT: {
1775 ir_node *value_node = expression_to_firm(value);
1776 ir_mode *mode = get_ir_mode(type);
1777 if(get_irn_mode(value_node) != mode_b) {
1778 value_node = create_conv(dbgi, value_node, mode_b);
1780 value_node = new_d_Not(dbgi, value_node, mode_b);
1781 if(mode != mode_b) {
1782 value_node = create_conv(dbgi, value_node, mode);
1786 case EXPR_UNARY_DEREFERENCE: {
1787 ir_node *value_node = expression_to_firm(value);
1788 type_t *value_type = skip_typeref(value->base.type);
1789 assert(is_type_pointer(value_type));
1790 type_t *points_to = value_type->pointer.points_to;
1791 return deref_address(points_to, value_node, dbgi);
1793 case EXPR_UNARY_POSTFIX_INCREMENT:
1794 case EXPR_UNARY_POSTFIX_DECREMENT:
1795 case EXPR_UNARY_PREFIX_INCREMENT:
1796 case EXPR_UNARY_PREFIX_DECREMENT:
1797 return create_incdec(expression);
1798 case EXPR_UNARY_CAST: {
1799 ir_node *value_node = expression_to_firm(value);
1800 if(is_type_scalar(type)) {
1801 ir_mode *mode = get_ir_mode(type);
1802 ir_node *node = create_conv(dbgi, value_node, mode);
1803 node = do_strict_conv(dbgi, node);
1806 /* make sure firm type is constructed */
1807 (void) get_ir_type(type);
1811 case EXPR_UNARY_CAST_IMPLICIT: {
1812 ir_node *value_node = expression_to_firm(value);
1813 if(is_type_scalar(type)) {
1814 ir_mode *mode = get_ir_mode(type);
1815 return create_conv(dbgi, value_node, mode);
1820 case EXPR_UNARY_ASSUME:
1821 if(firm_opt.confirm)
1822 return handle_assume(dbgi, value);
1825 case EXPR_UNARY_BITFIELD_EXTRACT:
1826 return bitfield_extract_to_firm(expression);
1831 panic("invalid UNEXPR type found");
1834 static ir_node *produce_condition_result(const expression_t *expression,
1837 ir_mode *mode = get_ir_mode(expression->base.type);
1838 ir_node *cur_block = get_cur_block();
1840 ir_node *one_block = new_immBlock();
1841 ir_node *one = new_Const(mode, get_mode_one(mode));
1842 ir_node *jmp_one = new_d_Jmp(dbgi);
1844 ir_node *zero_block = new_immBlock();
1845 ir_node *zero = new_Const(mode, get_mode_null(mode));
1846 ir_node *jmp_zero = new_d_Jmp(dbgi);
1848 set_cur_block(cur_block);
1849 create_condition_evaluation(expression, one_block, zero_block);
1850 mature_immBlock(one_block);
1851 mature_immBlock(zero_block);
1853 ir_node *common_block = new_immBlock();
1854 add_immBlock_pred(common_block, jmp_one);
1855 add_immBlock_pred(common_block, jmp_zero);
1856 mature_immBlock(common_block);
1858 ir_node *in[2] = { one, zero };
1859 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1864 static ir_node *create_lazy_op(const binary_expression_t *expression)
1866 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1867 type_t *type = expression->base.type;
1868 ir_mode *mode = get_ir_mode(type);
1870 if(is_constant_expression(expression->left)) {
1871 long val = fold_constant(expression->left);
1872 expression_kind_t ekind = expression->base.kind;
1873 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1874 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1875 return expression_to_firm(expression->right);
1877 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1878 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1879 return new_Const(mode, get_mode_one(mode));
1883 return produce_condition_result((const expression_t*) expression, dbgi);
1886 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1887 ir_node *right, ir_mode *mode);
1889 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1890 create_arithmetic_func func)
1892 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1893 ir_node *left = expression_to_firm(expression->left);
1894 ir_node *right = expression_to_firm(expression->right);
1895 type_t *type = expression->right->base.type;
1896 /* be careful with the modes, because in arithmetic assign nodes only
1897 * the right operand has the mode of the arithmetic already */
1898 ir_mode *mode = get_ir_mode(type);
1899 left = create_conv(dbgi, left, mode);
1900 ir_node *res = func(dbgi, left, right, mode);
1905 static ir_node *pointer_arithmetic(ir_node *const pointer,
1908 dbg_info *const dbgi,
1909 const create_arithmetic_func func)
1911 pointer_type_t *const pointer_type = &type->pointer;
1912 type_t *const points_to = pointer_type->points_to;
1913 const unsigned elem_size = get_type_size_const(points_to);
1915 assert(elem_size >= 1);
1916 if (elem_size > 1) {
1917 integer = create_conv(dbgi, integer, mode_int);
1918 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1919 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1923 ir_mode *const mode = get_ir_mode(type);
1924 return func(dbgi, pointer, integer, mode);
1927 static ir_node *create_arithmetic_assign_binop(
1928 const binary_expression_t *expression, create_arithmetic_func func)
1930 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1931 type_t *const type = skip_typeref(expression->base.type);
1934 if (is_type_pointer(type)) {
1935 ir_node *const pointer = expression_to_firm(expression->left);
1936 ir_node * integer = expression_to_firm(expression->right);
1937 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1939 value = create_arithmetic_binop(expression, func);
1942 ir_mode *const mode = get_ir_mode(type);
1943 value = create_conv(dbgi, value, mode);
1944 set_value_for_expression(expression->left, value);
1949 static ir_node *create_add(const binary_expression_t *expression)
1951 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1952 ir_node *left = expression_to_firm(expression->left);
1953 ir_node *right = expression_to_firm(expression->right);
1954 type_t *type = expression->base.type;
1956 expression_t *expr_left = expression->left;
1957 expression_t *expr_right = expression->right;
1958 type_t *type_left = skip_typeref(expr_left->base.type);
1959 type_t *type_right = skip_typeref(expr_right->base.type);
1961 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1962 ir_mode *const mode = get_ir_mode(type);
1963 return new_d_Add(dbgi, left, right, mode);
1966 if (is_type_pointer(type_left)) {
1967 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1969 assert(is_type_pointer(type_right));
1970 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1974 static ir_node *create_sub(const binary_expression_t *expression)
1976 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1977 expression_t *const expr_left = expression->left;
1978 expression_t *const expr_right = expression->right;
1979 ir_node *const left = expression_to_firm(expr_left);
1980 ir_node *const right = expression_to_firm(expr_right);
1981 type_t *const type = expression->base.type;
1982 type_t *const type_left = skip_typeref(expr_left->base.type);
1983 type_t *const type_right = skip_typeref(expr_right->base.type);
1985 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1986 ir_mode *const mode = get_ir_mode(type);
1987 return new_d_Sub(dbgi, left, right, mode);
1988 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1989 const pointer_type_t *const ptr_type = &type_left->pointer;
1991 ir_node *const elem_size = get_type_size(ptr_type->points_to);
1992 ir_mode *const mode = get_ir_mode(type);
1993 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
1994 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1995 ir_node *const no_mem = new_NoMem();
1996 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
1997 op_pin_state_floats);
1998 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2001 assert(is_type_pointer(type_left));
2002 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2005 static ir_node *create_shift(const binary_expression_t *expression)
2007 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2008 ir_node *left = expression_to_firm(expression->left);
2009 ir_node *right = expression_to_firm(expression->right);
2010 type_t *type = expression->base.type;
2011 ir_mode *mode = get_ir_mode(type);
2013 /* firm always wants the shift count to be unsigned */
2014 right = create_conv(dbgi, right, mode_uint);
2018 switch(expression->base.kind) {
2019 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2020 case EXPR_BINARY_SHIFTLEFT:
2021 res = new_d_Shl(dbgi, left, right, mode);
2023 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2024 case EXPR_BINARY_SHIFTRIGHT: {
2025 expression_t *expr_left = expression->left;
2026 type_t *type_left = skip_typeref(expr_left->base.type);
2028 if(is_type_signed(type_left)) {
2029 res = new_d_Shrs(dbgi, left, right, mode);
2031 res = new_d_Shr(dbgi, left, right, mode);
2036 panic("create shift op called for non-shift op");
2043 static ir_node *create_divmod(const binary_expression_t *expression)
2045 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2046 ir_node *left = expression_to_firm(expression->left);
2047 ir_node *right = expression_to_firm(expression->right);
2048 ir_node *pin = new_Pin(new_NoMem());
2049 /* be careful with the modes, because in arithmetic assign nodes only
2050 * the right operand has the mode of the arithmetic already */
2051 type_t *type = expression->right->base.type;
2052 ir_mode *mode = get_ir_mode(type);
2053 left = create_conv(dbgi, left, mode);
2057 switch (expression->base.kind) {
2058 case EXPR_BINARY_DIV:
2059 case EXPR_BINARY_DIV_ASSIGN:
2060 if(mode_is_float(mode)) {
2061 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2062 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2064 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2065 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2069 case EXPR_BINARY_MOD:
2070 case EXPR_BINARY_MOD_ASSIGN:
2071 assert(!mode_is_float(mode));
2072 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2073 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2076 default: panic("unexpected binary expression type in create_divmod()");
2082 static ir_node *create_arithmetic_assign_divmod(
2083 const binary_expression_t *expression)
2085 ir_node * value = create_divmod(expression);
2086 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2087 type_t *const type = expression->base.type;
2088 ir_mode *const mode = get_ir_mode(type);
2090 assert(type->kind != TYPE_POINTER);
2092 value = create_conv(dbgi, value, mode);
2093 set_value_for_expression(expression->left, value);
2098 static ir_node *create_arithmetic_assign_shift(
2099 const binary_expression_t *expression)
2101 ir_node * value = create_shift(expression);
2102 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2103 type_t *const type = expression->base.type;
2104 ir_mode *const mode = get_ir_mode(type);
2106 value = create_conv(dbgi, value, mode);
2107 set_value_for_expression(expression->left, value);
2112 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2114 expression_kind_t kind = expression->base.kind;
2117 case EXPR_BINARY_EQUAL:
2118 case EXPR_BINARY_NOTEQUAL:
2119 case EXPR_BINARY_LESS:
2120 case EXPR_BINARY_LESSEQUAL:
2121 case EXPR_BINARY_GREATER:
2122 case EXPR_BINARY_GREATEREQUAL:
2123 case EXPR_BINARY_ISGREATER:
2124 case EXPR_BINARY_ISGREATEREQUAL:
2125 case EXPR_BINARY_ISLESS:
2126 case EXPR_BINARY_ISLESSEQUAL:
2127 case EXPR_BINARY_ISLESSGREATER:
2128 case EXPR_BINARY_ISUNORDERED: {
2129 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2130 ir_node *left = expression_to_firm(expression->left);
2131 ir_node *right = expression_to_firm(expression->right);
2132 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2133 long pnc = get_pnc(kind, expression->left->base.type);
2134 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2137 case EXPR_BINARY_ASSIGN: {
2138 ir_node *right = expression_to_firm(expression->right);
2139 set_value_for_expression(expression->left, right);
2143 case EXPR_BINARY_ADD:
2144 return create_add(expression);
2145 case EXPR_BINARY_SUB:
2146 return create_sub(expression);
2147 case EXPR_BINARY_MUL:
2148 return create_arithmetic_binop(expression, new_d_Mul);
2149 case EXPR_BINARY_BITWISE_AND:
2150 return create_arithmetic_binop(expression, new_d_And);
2151 case EXPR_BINARY_BITWISE_OR:
2152 return create_arithmetic_binop(expression, new_d_Or);
2153 case EXPR_BINARY_BITWISE_XOR:
2154 return create_arithmetic_binop(expression, new_d_Eor);
2155 case EXPR_BINARY_SHIFTLEFT:
2156 case EXPR_BINARY_SHIFTRIGHT:
2157 return create_shift(expression);
2158 case EXPR_BINARY_DIV:
2159 case EXPR_BINARY_MOD:
2160 return create_divmod(expression);
2161 case EXPR_BINARY_LOGICAL_AND:
2162 case EXPR_BINARY_LOGICAL_OR:
2163 return create_lazy_op(expression);
2164 case EXPR_BINARY_COMMA:
2165 expression_to_firm(expression->left);
2166 return expression_to_firm(expression->right);
2167 case EXPR_BINARY_ADD_ASSIGN:
2168 return create_arithmetic_assign_binop(expression, new_d_Add);
2169 case EXPR_BINARY_SUB_ASSIGN:
2170 return create_arithmetic_assign_binop(expression, new_d_Sub);
2171 case EXPR_BINARY_MUL_ASSIGN:
2172 return create_arithmetic_assign_binop(expression, new_d_Mul);
2173 case EXPR_BINARY_MOD_ASSIGN:
2174 case EXPR_BINARY_DIV_ASSIGN:
2175 return create_arithmetic_assign_divmod(expression);
2176 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2177 return create_arithmetic_assign_binop(expression, new_d_And);
2178 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2179 return create_arithmetic_assign_binop(expression, new_d_Or);
2180 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2181 return create_arithmetic_assign_binop(expression, new_d_Eor);
2182 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2183 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2184 return create_arithmetic_assign_shift(expression);
2185 case EXPR_BINARY_BUILTIN_EXPECT:
2186 return expression_to_firm(expression->left);
2188 panic("TODO binexpr type");
2192 static ir_node *array_access_addr(const array_access_expression_t *expression)
2194 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2195 ir_node *base_addr = expression_to_firm(expression->array_ref);
2196 ir_node *offset = expression_to_firm(expression->index);
2197 offset = create_conv(dbgi, offset, mode_uint);
2199 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2200 assert(is_type_pointer(ref_type));
2201 pointer_type_t *pointer_type = &ref_type->pointer;
2203 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2204 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2206 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2211 static ir_node *array_access_to_firm(
2212 const array_access_expression_t *expression)
2214 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2215 ir_node *addr = array_access_addr(expression);
2216 type_t *type = revert_automatic_type_conversion(
2217 (const expression_t*) expression);
2218 type = skip_typeref(type);
2220 return deref_address(type, addr, dbgi);
2223 static long get_offsetof_offset(const offsetof_expression_t *expression)
2225 type_t *orig_type = expression->type;
2228 designator_t *designator = expression->designator;
2229 for( ; designator != NULL; designator = designator->next) {
2230 type_t *type = skip_typeref(orig_type);
2231 /* be sure the type is constructed */
2232 (void) get_ir_type(type);
2234 if(designator->symbol != NULL) {
2235 assert(is_type_compound(type));
2236 symbol_t *symbol = designator->symbol;
2238 declaration_t *declaration = type->compound.declaration;
2239 declaration_t *iter = declaration->scope.declarations;
2240 for( ; iter != NULL; iter = iter->next) {
2241 if(iter->symbol == symbol) {
2245 assert(iter != NULL);
2247 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2248 offset += get_entity_offset(iter->v.entity);
2250 orig_type = iter->type;
2252 expression_t *array_index = designator->array_index;
2253 assert(designator->array_index != NULL);
2254 assert(is_type_array(type));
2255 assert(is_type_valid(array_index->base.type));
2257 long index = fold_constant(array_index);
2258 ir_type *arr_type = get_ir_type(type);
2259 ir_type *elem_type = get_array_element_type(arr_type);
2260 long elem_size = get_type_size_bytes(elem_type);
2262 offset += index * elem_size;
2264 orig_type = type->array.element_type;
2271 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2273 ir_mode *mode = get_ir_mode(expression->base.type);
2274 long offset = get_offsetof_offset(expression);
2275 tarval *tv = new_tarval_from_long(offset, mode);
2276 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2278 return new_d_Const(dbgi, mode, tv);
2281 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2282 ir_entity *entity, type_t *type);
2284 static ir_node *compound_literal_to_firm(
2285 const compound_literal_expression_t *expression)
2287 type_t *type = expression->type;
2289 /* create an entity on the stack */
2290 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2292 ident *const id = unique_ident("CompLit");
2293 ir_type *const irtype = get_ir_type(type);
2294 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2295 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2296 set_entity_ld_ident(entity, id);
2298 set_entity_variability(entity, variability_uninitialized);
2300 /* create initialisation code */
2301 initializer_t *initializer = expression->initializer;
2302 create_local_initializer(initializer, dbgi, entity, type);
2304 /* create a sel for the compound literal address */
2305 ir_node *frame = get_local_frame(entity);
2306 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2311 * Transform a sizeof expression into Firm code.
2313 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2315 type_t *type = expression->type;
2317 type = expression->tp_expression->base.type;
2318 assert(type != NULL);
2321 type = skip_typeref(type);
2322 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2323 if(is_type_array(type) && type->array.is_vla
2324 && expression->tp_expression != NULL) {
2325 expression_to_firm(expression->tp_expression);
2328 return get_type_size(type);
2332 * Transform an alignof expression into Firm code.
2334 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2336 type_t *type = expression->type;
2338 /* beware: if expression is a variable reference, return the
2339 alignment of the variable. */
2340 const expression_t *tp_expression = expression->tp_expression;
2341 const declaration_t *declaration = expr_is_variable(tp_expression);
2342 if (declaration != NULL) {
2343 /* TODO: get the alignment of this variable. */
2345 type = tp_expression->base.type;
2346 assert(type != NULL);
2349 ir_mode *const mode = get_ir_mode(expression->base.type);
2350 symconst_symbol sym;
2351 sym.type_p = get_ir_type(type);
2352 return new_SymConst(mode, sym, symconst_type_align);
2355 static void init_ir_types(void);
2356 long fold_constant(const expression_t *expression)
2360 assert(is_constant_expression(expression));
2362 ir_graph *old_current_ir_graph = current_ir_graph;
2363 if(current_ir_graph == NULL) {
2364 current_ir_graph = get_const_code_irg();
2367 ir_node *cnst = expression_to_firm(expression);
2368 current_ir_graph = old_current_ir_graph;
2370 if(!is_Const(cnst)) {
2371 panic("couldn't fold constant\n");
2374 tarval *tv = get_Const_tarval(cnst);
2375 if(!tarval_is_long(tv)) {
2376 panic("result of constant folding is not integer\n");
2379 return get_tarval_long(tv);
2382 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2384 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2386 /* first try to fold a constant condition */
2387 if(is_constant_expression(expression->condition)) {
2388 long val = fold_constant(expression->condition);
2390 return expression_to_firm(expression->true_expression);
2392 return expression_to_firm(expression->false_expression);
2396 ir_node *cur_block = get_cur_block();
2398 /* create the true block */
2399 ir_node *true_block = new_immBlock();
2401 ir_node *true_val = expression_to_firm(expression->true_expression);
2402 ir_node *true_jmp = new_Jmp();
2404 /* create the false block */
2405 ir_node *false_block = new_immBlock();
2407 ir_node *false_val = expression_to_firm(expression->false_expression);
2408 ir_node *false_jmp = new_Jmp();
2410 /* create the condition evaluation */
2411 set_cur_block(cur_block);
2412 create_condition_evaluation(expression->condition, true_block, false_block);
2413 mature_immBlock(true_block);
2414 mature_immBlock(false_block);
2416 /* create the common block */
2417 ir_node *common_block = new_immBlock();
2418 add_immBlock_pred(common_block, true_jmp);
2419 add_immBlock_pred(common_block, false_jmp);
2420 mature_immBlock(common_block);
2422 /* TODO improve static semantics, so either both or no values are NULL */
2423 if (true_val == NULL || false_val == NULL)
2426 ir_node *in[2] = { true_val, false_val };
2427 ir_mode *mode = get_irn_mode(true_val);
2428 assert(get_irn_mode(false_val) == mode);
2429 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2434 static ir_node *select_addr(const select_expression_t *expression)
2436 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2438 ir_node *compound_addr = expression_to_firm(expression->compound);
2440 declaration_t *entry = expression->compound_entry;
2441 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2442 ir_entity *entity = entry->v.entity;
2444 assert(entity != NULL);
2446 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2451 static ir_node *select_to_firm(const select_expression_t *expression)
2453 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2454 ir_node *addr = select_addr(expression);
2455 type_t *type = revert_automatic_type_conversion(
2456 (const expression_t*) expression);
2457 type = skip_typeref(type);
2459 return deref_address(type, addr, dbgi);
2462 /* Values returned by __builtin_classify_type. */
2463 typedef enum gcc_type_class
2469 enumeral_type_class,
2472 reference_type_class,
2476 function_type_class,
2487 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2489 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2495 const atomic_type_t *const atomic_type = &type->atomic;
2496 switch ((atomic_type_kind_t) atomic_type->akind) {
2497 /* should not be reached */
2498 case ATOMIC_TYPE_INVALID:
2502 /* gcc cannot do that */
2503 case ATOMIC_TYPE_VOID:
2504 tc = void_type_class;
2507 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2508 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2509 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2510 case ATOMIC_TYPE_SHORT:
2511 case ATOMIC_TYPE_USHORT:
2512 case ATOMIC_TYPE_INT:
2513 case ATOMIC_TYPE_UINT:
2514 case ATOMIC_TYPE_LONG:
2515 case ATOMIC_TYPE_ULONG:
2516 case ATOMIC_TYPE_LONGLONG:
2517 case ATOMIC_TYPE_ULONGLONG:
2518 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2519 tc = integer_type_class;
2522 case ATOMIC_TYPE_FLOAT:
2523 case ATOMIC_TYPE_DOUBLE:
2524 case ATOMIC_TYPE_LONG_DOUBLE:
2525 tc = real_type_class;
2528 case ATOMIC_TYPE_FLOAT_COMPLEX:
2529 case ATOMIC_TYPE_DOUBLE_COMPLEX:
2530 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
2531 tc = complex_type_class;
2533 case ATOMIC_TYPE_FLOAT_IMAGINARY:
2534 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
2535 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
2536 tc = complex_type_class;
2539 panic("Unexpected atomic type in classify_type_to_firm().");
2542 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2543 case TYPE_ARRAY: /* gcc handles this as pointer */
2544 case TYPE_FUNCTION: /* gcc handles this as pointer */
2545 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2546 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2547 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2549 /* gcc handles this as integer */
2550 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2553 /* typedef/typeof should be skipped already */
2560 panic("unexpected TYPE classify_type_to_firm().");
2563 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2564 ir_mode *const mode = mode_int;
2565 tarval *const tv = new_tarval_from_long(tc, mode);
2566 return new_d_Const(dbgi, mode, tv);
2569 static ir_node *function_name_to_firm(
2570 const funcname_expression_t *const expr)
2572 switch(expr->kind) {
2573 case FUNCNAME_FUNCTION:
2574 case FUNCNAME_PRETTY_FUNCTION:
2575 case FUNCNAME_FUNCDNAME:
2576 if (current_function_name == NULL) {
2577 const source_position_t *const src_pos = &expr->base.source_position;
2578 const char *const name = current_function_decl->symbol->string;
2579 const string_t string = { name, strlen(name) + 1 };
2580 current_function_name = string_to_firm(src_pos, "__func__", &string);
2582 return current_function_name;
2583 case FUNCNAME_FUNCSIG:
2584 if (current_funcsig == NULL) {
2585 const source_position_t *const src_pos = &expr->base.source_position;
2586 ir_entity *ent = get_irg_entity(current_ir_graph);
2587 const char *const name = get_entity_ld_name(ent);
2588 const string_t string = { name, strlen(name) + 1 };
2589 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__", &string);
2591 return current_funcsig;
2593 panic("Unsupported function name");
2596 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2598 statement_t *statement = expr->statement;
2600 assert(statement->kind == STATEMENT_COMPOUND);
2601 return compound_statement_to_firm(&statement->compound);
2604 static ir_node *va_start_expression_to_firm(
2605 const va_start_expression_t *const expr)
2607 ir_type *const method_type = get_ir_type(current_function_decl->type);
2608 int const n = get_method_n_params(method_type) - 1;
2609 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2610 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2611 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2612 ir_node *const no_mem = new_NoMem();
2613 ir_node *const arg_sel =
2614 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2616 ir_node *const cnst = get_type_size(expr->parameter->type);
2617 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2618 set_value_for_expression(expr->ap, add);
2623 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2625 type_t *const type = expr->base.type;
2626 ir_node *const ap = expression_to_firm(expr->ap);
2627 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2628 ir_node *const res = deref_address(type, ap, dbgi);
2630 ir_node *const cnst = get_type_size(expr->base.type);
2631 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2632 set_value_for_expression(expr->ap, add);
2637 static ir_node *dereference_addr(const unary_expression_t *const expression)
2639 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2640 return expression_to_firm(expression->value);
2643 static ir_node *expression_to_addr(const expression_t *expression)
2645 switch(expression->kind) {
2646 case EXPR_REFERENCE:
2647 return reference_addr(&expression->reference);
2648 case EXPR_ARRAY_ACCESS:
2649 return array_access_addr(&expression->array_access);
2651 return select_addr(&expression->select);
2653 return call_expression_to_firm(&expression->call);
2654 case EXPR_UNARY_DEREFERENCE: {
2655 return dereference_addr(&expression->unary);
2660 panic("trying to get address of non-lvalue");
2663 static ir_node *builtin_constant_to_firm(
2664 const builtin_constant_expression_t *expression)
2666 ir_mode *mode = get_ir_mode(expression->base.type);
2669 if (is_constant_expression(expression->value)) {
2674 return new_Const_long(mode, v);
2677 static ir_node *builtin_prefetch_to_firm(
2678 const builtin_prefetch_expression_t *expression)
2680 ir_node *adr = expression_to_firm(expression->adr);
2681 /* no Firm support for prefetch yet */
2686 static ir_node *_expression_to_firm(const expression_t *expression)
2688 switch(expression->kind) {
2689 case EXPR_CHARACTER_CONSTANT:
2690 return character_constant_to_firm(&expression->conste);
2691 case EXPR_WIDE_CHARACTER_CONSTANT:
2692 return wide_character_constant_to_firm(&expression->conste);
2694 return const_to_firm(&expression->conste);
2695 case EXPR_STRING_LITERAL:
2696 return string_literal_to_firm(&expression->string);
2697 case EXPR_WIDE_STRING_LITERAL:
2698 return wide_string_literal_to_firm(&expression->wide_string);
2699 case EXPR_REFERENCE:
2700 return reference_expression_to_firm(&expression->reference);
2702 return call_expression_to_firm(&expression->call);
2704 return unary_expression_to_firm(&expression->unary);
2706 return binary_expression_to_firm(&expression->binary);
2707 case EXPR_ARRAY_ACCESS:
2708 return array_access_to_firm(&expression->array_access);
2710 return sizeof_to_firm(&expression->typeprop);
2712 return alignof_to_firm(&expression->typeprop);
2713 case EXPR_CONDITIONAL:
2714 return conditional_to_firm(&expression->conditional);
2716 return select_to_firm(&expression->select);
2717 case EXPR_CLASSIFY_TYPE:
2718 return classify_type_to_firm(&expression->classify_type);
2720 return function_name_to_firm(&expression->funcname);
2721 case EXPR_STATEMENT:
2722 return statement_expression_to_firm(&expression->statement);
2724 return va_start_expression_to_firm(&expression->va_starte);
2726 return va_arg_expression_to_firm(&expression->va_arge);
2727 case EXPR_BUILTIN_SYMBOL:
2728 panic("unimplemented expression found");
2729 case EXPR_BUILTIN_CONSTANT_P:
2730 return builtin_constant_to_firm(&expression->builtin_constant);
2731 case EXPR_BUILTIN_PREFETCH:
2732 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2734 return offsetof_to_firm(&expression->offsetofe);
2735 case EXPR_COMPOUND_LITERAL:
2736 return compound_literal_to_firm(&expression->compound_literal);
2742 panic("invalid expression found");
2745 static ir_node *expression_to_firm(const expression_t *expression)
2747 ir_node *res = _expression_to_firm(expression);
2749 if(res != NULL && get_irn_mode(res) == mode_b) {
2750 ir_mode *mode = get_ir_mode(expression->base.type);
2752 if(is_Const_null(res)) {
2753 return new_Const_long(mode, 0);
2755 assert(is_Const_one(res));
2756 return new_Const_long(mode, 1);
2760 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2761 return produce_condition_result(expression, dbgi);
2767 static ir_node *expression_to_modeb(const expression_t *expression)
2769 ir_node *res = _expression_to_firm(expression);
2770 res = create_conv(NULL, res, mode_b);
2776 * create a short-circuit expression evaluation that tries to construct
2777 * efficient control flow structures for &&, || and ! expressions
2779 static void create_condition_evaluation(const expression_t *expression,
2780 ir_node *true_block,
2781 ir_node *false_block)
2783 switch(expression->kind) {
2784 case EXPR_UNARY_NOT: {
2785 const unary_expression_t *unary_expression = &expression->unary;
2786 create_condition_evaluation(unary_expression->value, false_block,
2790 case EXPR_BINARY_LOGICAL_AND: {
2791 const binary_expression_t *binary_expression = &expression->binary;
2793 ir_node *cur_block = get_cur_block();
2794 ir_node *extra_block = new_immBlock();
2795 set_cur_block(cur_block);
2796 create_condition_evaluation(binary_expression->left, extra_block,
2798 mature_immBlock(extra_block);
2799 set_cur_block(extra_block);
2800 create_condition_evaluation(binary_expression->right, true_block,
2804 case EXPR_BINARY_LOGICAL_OR: {
2805 const binary_expression_t *binary_expression = &expression->binary;
2807 ir_node *cur_block = get_cur_block();
2808 ir_node *extra_block = new_immBlock();
2809 set_cur_block(cur_block);
2810 create_condition_evaluation(binary_expression->left, true_block,
2812 mature_immBlock(extra_block);
2813 set_cur_block(extra_block);
2814 create_condition_evaluation(binary_expression->right, true_block,
2822 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2823 ir_node *condition = expression_to_modeb(expression);
2824 ir_node *cond = new_d_Cond(dbgi, condition);
2825 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2826 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2828 /* set branch prediction info based on __builtin_expect */
2829 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2830 long cnst = fold_constant(expression->binary.right);
2831 cond_jmp_predicate pred;
2834 pred = COND_JMP_PRED_FALSE;
2836 pred = COND_JMP_PRED_TRUE;
2838 set_Cond_jmp_pred(cond, pred);
2841 add_immBlock_pred(true_block, true_proj);
2842 add_immBlock_pred(false_block, false_proj);
2844 set_cur_block(NULL);
2849 static void create_declaration_entity(declaration_t *declaration,
2850 declaration_kind_t declaration_kind,
2851 ir_type *parent_type)
2853 ident *const id = new_id_from_str(declaration->symbol->string);
2854 type_t *const type = skip_typeref(declaration->type);
2855 ir_type *const irtype = get_ir_type(type);
2856 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2857 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2858 set_entity_ld_ident(entity, id);
2860 declaration->declaration_kind = (unsigned char) declaration_kind;
2861 declaration->v.entity = entity;
2862 set_entity_variability(entity, variability_uninitialized);
2863 if(parent_type == get_tls_type())
2864 set_entity_allocation(entity, allocation_automatic);
2865 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2866 set_entity_allocation(entity, allocation_static);
2868 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2869 set_entity_volatility(entity, volatility_is_volatile);
2874 typedef struct type_path_entry_t type_path_entry_t;
2875 struct type_path_entry_t {
2877 ir_initializer_t *initializer;
2879 declaration_t *compound_entry;
2882 typedef struct type_path_t type_path_t;
2883 struct type_path_t {
2884 type_path_entry_t *path;
2889 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2891 size_t len = ARR_LEN(path->path);
2893 for(size_t i = 0; i < len; ++i) {
2894 const type_path_entry_t *entry = & path->path[i];
2896 type_t *type = skip_typeref(entry->type);
2897 if(is_type_compound(type)) {
2898 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2899 } else if(is_type_array(type)) {
2900 fprintf(stderr, "[%zd]", entry->index);
2902 fprintf(stderr, "-INVALID-");
2905 fprintf(stderr, " (");
2906 print_type(path->top_type);
2907 fprintf(stderr, ")");
2910 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2912 size_t len = ARR_LEN(path->path);
2914 return & path->path[len-1];
2917 static type_path_entry_t *append_to_type_path(type_path_t *path)
2919 size_t len = ARR_LEN(path->path);
2920 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2922 type_path_entry_t *result = & path->path[len];
2923 memset(result, 0, sizeof(result[0]));
2927 static size_t get_compound_size(const compound_type_t *type)
2929 declaration_t *declaration = type->declaration;
2930 declaration_t *member = declaration->scope.declarations;
2932 for( ; member != NULL; member = member->next) {
2935 /* TODO: cache results? */
2940 static ir_initializer_t *get_initializer_entry(type_path_t *path)
2942 type_t *orig_top_type = path->top_type;
2943 type_t *top_type = skip_typeref(orig_top_type);
2945 assert(is_type_compound(top_type) || is_type_array(top_type));
2947 if(ARR_LEN(path->path) == 0) {
2950 type_path_entry_t *top = get_type_path_top(path);
2951 ir_initializer_t *initializer = top->initializer;
2952 return get_initializer_compound_value(initializer, top->index);
2956 static void descend_into_subtype(type_path_t *path)
2958 type_t *orig_top_type = path->top_type;
2959 type_t *top_type = skip_typeref(orig_top_type);
2961 assert(is_type_compound(top_type) || is_type_array(top_type));
2963 ir_initializer_t *initializer = get_initializer_entry(path);
2965 type_path_entry_t *top = append_to_type_path(path);
2966 top->type = top_type;
2970 if(is_type_compound(top_type)) {
2971 declaration_t *declaration = top_type->compound.declaration;
2972 declaration_t *entry = declaration->scope.declarations;
2974 top->compound_entry = entry;
2976 len = get_compound_size(&top_type->compound);
2978 path->top_type = entry->type;
2980 assert(is_type_array(top_type));
2981 assert(top_type->array.size > 0);
2984 path->top_type = top_type->array.element_type;
2985 len = top_type->array.size;
2987 if(initializer == NULL
2988 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
2989 initializer = create_initializer_compound(len);
2990 /* we have to set the entry at the 2nd latest path entry... */
2991 size_t path_len = ARR_LEN(path->path);
2992 assert(path_len >= 1);
2994 type_path_entry_t *entry = & path->path[path_len-2];
2995 ir_initializer_t *tinitializer = entry->initializer;
2996 set_initializer_compound_value(tinitializer, entry->index,
3000 top->initializer = initializer;
3003 static void ascend_from_subtype(type_path_t *path)
3005 type_path_entry_t *top = get_type_path_top(path);
3007 path->top_type = top->type;
3009 size_t len = ARR_LEN(path->path);
3010 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3013 static void walk_designator(type_path_t *path, const designator_t *designator)
3015 /* designators start at current object type */
3016 ARR_RESIZE(type_path_entry_t, path->path, 1);
3018 for( ; designator != NULL; designator = designator->next) {
3019 type_path_entry_t *top = get_type_path_top(path);
3020 type_t *orig_type = top->type;
3021 type_t *type = skip_typeref(orig_type);
3023 if(designator->symbol != NULL) {
3024 assert(is_type_compound(type));
3026 symbol_t *symbol = designator->symbol;
3028 declaration_t *declaration = type->compound.declaration;
3029 declaration_t *iter = declaration->scope.declarations;
3030 for( ; iter != NULL; iter = iter->next, ++index) {
3031 if(iter->symbol == symbol) {
3035 assert(iter != NULL);
3037 top->type = orig_type;
3038 top->compound_entry = iter;
3040 orig_type = iter->type;
3042 expression_t *array_index = designator->array_index;
3043 assert(designator->array_index != NULL);
3044 assert(is_type_array(type));
3045 assert(is_type_valid(array_index->base.type));
3047 long index = fold_constant(array_index);
3050 if(type->array.size_constant == 1) {
3051 long array_size = type->array.size;
3052 assert(index < array_size);
3056 top->type = orig_type;
3057 top->index = (size_t) index;
3058 orig_type = type->array.element_type;
3060 path->top_type = orig_type;
3062 if(designator->next != NULL) {
3063 descend_into_subtype(path);
3067 path->invalid = false;
3070 static void advance_current_object(type_path_t *path)
3073 /* TODO: handle this... */
3074 panic("invalid initializer in ast2firm (excessive elements)");
3078 type_path_entry_t *top = get_type_path_top(path);
3080 type_t *type = skip_typeref(top->type);
3081 if(is_type_union(type)) {
3082 top->compound_entry = NULL;
3083 } else if(is_type_struct(type)) {
3084 declaration_t *entry = top->compound_entry;
3087 entry = entry->next;
3088 top->compound_entry = entry;
3090 path->top_type = entry->type;
3094 assert(is_type_array(type));
3097 if(!type->array.size_constant || top->index < type->array.size) {
3102 /* we're past the last member of the current sub-aggregate, try if we
3103 * can ascend in the type hierarchy and continue with another subobject */
3104 size_t len = ARR_LEN(path->path);
3107 ascend_from_subtype(path);
3108 advance_current_object(path);
3110 path->invalid = true;
3115 static ir_initializer_t *create_ir_initializer(
3116 const initializer_t *initializer, type_t *type);
3118 static ir_initializer_t *create_ir_initializer_value(
3119 const initializer_value_t *initializer)
3121 ir_node *value = expression_to_firm(initializer->value);
3122 return create_initializer_const(value);
3125 static ir_initializer_t *create_ir_initializer_list(
3126 const initializer_list_t *initializer, type_t *type)
3129 memset(&path, 0, sizeof(path));
3130 path.top_type = type;
3131 path.path = NEW_ARR_F(type_path_entry_t, 0);
3133 descend_into_subtype(&path);
3135 for(size_t i = 0; i < initializer->len; ++i) {
3136 const initializer_t *sub_initializer = initializer->initializers[i];
3138 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3139 walk_designator(&path, sub_initializer->designator.designator);
3143 if(sub_initializer->kind == INITIALIZER_VALUE) {
3144 /* we might have to descend into types until we're at a scalar
3147 type_t *orig_top_type = path.top_type;
3148 type_t *top_type = skip_typeref(orig_top_type);
3150 if(is_type_scalar(top_type))
3152 descend_into_subtype(&path);
3156 ir_initializer_t *sub_irinitializer
3157 = create_ir_initializer(sub_initializer, path.top_type);
3159 size_t path_len = ARR_LEN(path.path);
3160 assert(path_len >= 1);
3161 type_path_entry_t *entry = & path.path[path_len-1];
3162 ir_initializer_t *tinitializer = entry->initializer;
3163 set_initializer_compound_value(tinitializer, entry->index,
3166 advance_current_object(&path);
3169 assert(ARR_LEN(path.path) >= 1);
3170 ir_initializer_t *result = path.path[0].initializer;
3171 DEL_ARR_F(path.path);
3176 static ir_initializer_t *create_ir_initializer_string(
3177 const initializer_string_t *initializer, type_t *type)
3179 type = skip_typeref(type);
3181 size_t string_len = initializer->string.size;
3182 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3183 size_t len = type->array.size;
3184 ir_initializer_t *irinitializer = create_initializer_compound(len);
3186 const char *string = initializer->string.begin;
3187 ir_mode *mode = get_type_mode(ir_type_const_char);
3189 for(size_t i = 0; i < len; ++i) {
3194 tarval *tv = new_tarval_from_long(string[i], mode);
3195 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3197 set_initializer_compound_value(irinitializer, i, char_initializer);
3200 return irinitializer;
3203 static ir_initializer_t *create_ir_initializer_wide_string(
3204 const initializer_wide_string_t *initializer, type_t *type)
3206 size_t string_len = initializer->string.size;
3207 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3208 size_t len = type->array.size;
3209 ir_initializer_t *irinitializer = create_initializer_compound(len);
3211 const wchar_rep_t *string = initializer->string.begin;
3212 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3214 for(size_t i = 0; i < len; ++i) {
3216 if(i < string_len) {
3219 tarval *tv = new_tarval_from_long(string[i], mode);
3220 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3222 set_initializer_compound_value(irinitializer, i, char_initializer);
3225 return irinitializer;
3228 static ir_initializer_t *create_ir_initializer(
3229 const initializer_t *initializer, type_t *type)
3231 switch(initializer->kind) {
3232 case INITIALIZER_STRING:
3233 return create_ir_initializer_string(&initializer->string, type);
3235 case INITIALIZER_WIDE_STRING:
3236 return create_ir_initializer_wide_string(&initializer->wide_string,
3239 case INITIALIZER_LIST:
3240 return create_ir_initializer_list(&initializer->list, type);
3242 case INITIALIZER_VALUE:
3243 return create_ir_initializer_value(&initializer->value);
3245 case INITIALIZER_DESIGNATOR:
3246 panic("unexpected designator initializer found");
3248 panic("unknown initializer");
3251 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3252 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3254 switch(get_initializer_kind(initializer)) {
3255 case IR_INITIALIZER_NULL: {
3256 /* TODO: implement this for compound types... */
3257 assert(type != NULL);
3259 ir_mode *mode = get_type_mode(type);
3260 tarval *zero = get_mode_null(mode);
3261 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3263 /* TODO: bitfields */
3264 ir_node *mem = get_store();
3265 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3266 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3270 case IR_INITIALIZER_CONST: {
3271 ir_node *node = get_initializer_const_value(initializer);
3272 ir_mode *mode = get_irn_mode(node);
3273 assert(get_type_mode(type) == mode);
3275 /* TODO: bitfields... */
3276 ir_node *mem = get_store();
3277 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3278 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3282 case IR_INITIALIZER_TARVAL: {
3283 tarval *tv = get_initializer_tarval_value(initializer);
3284 ir_mode *mode = get_tarval_mode(tv);
3285 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3286 assert(get_type_mode(type) == mode);
3288 /* TODO: bitfields... */
3289 ir_node *mem = get_store();
3290 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3291 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3295 case IR_INITIALIZER_COMPOUND: {
3296 assert(is_compound_type(type));
3298 if(is_Array_type(type)) {
3299 assert(has_array_upper_bound(type, 0));
3300 n_members = get_array_upper_bound_int(type, 0);
3302 n_members = get_compound_n_members(type);
3305 if(get_initializer_compound_n_entries(initializer)
3306 != (unsigned) n_members)
3307 panic("initializer doesn't match compound type");
3309 for(int i = 0; i < n_members; ++i) {
3312 if(is_Array_type(type)) {
3313 ir_entity *entity = get_array_element_entity(type);
3314 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3315 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3316 ir_node *in[1] = { cnst };
3317 irtype = get_array_element_type(type);
3318 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3320 ir_entity *member = get_compound_member(type, i);
3322 irtype = get_entity_type(member);
3323 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3326 ir_initializer_t *sub_init
3327 = get_initializer_compound_value(initializer, i);
3329 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3335 panic("invalid IR_INITIALIZER found");
3338 static void create_dynamic_initializer(ir_initializer_t *initializer,
3339 dbg_info *dbgi, ir_entity *entity)
3341 ir_node *frame = get_local_frame(entity);
3342 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3343 ir_type *type = get_entity_type(entity);
3345 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3348 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3349 ir_entity *entity, type_t *type)
3351 ir_node *memory = get_store();
3352 ir_node *nomem = new_NoMem();
3353 ir_node *frame = get_irg_frame(current_ir_graph);
3354 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3356 if(initializer->kind == INITIALIZER_VALUE) {
3357 initializer_value_t *initializer_value = &initializer->value;
3359 ir_node *value = expression_to_firm(initializer_value->value);
3360 type = skip_typeref(type);
3361 assign_value(dbgi, addr, type, value);
3365 if(!is_constant_initializer(initializer)) {
3366 ir_initializer_t *irinitializer
3367 = create_ir_initializer(initializer, type);
3369 create_dynamic_initializer(irinitializer, dbgi, entity);
3373 /* create the ir_initializer */
3374 ir_graph *const old_current_ir_graph = current_ir_graph;
3375 current_ir_graph = get_const_code_irg();
3377 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3379 assert(current_ir_graph == get_const_code_irg());
3380 current_ir_graph = old_current_ir_graph;
3382 /* create a "template" entity which is copied to the entity on the stack */
3383 ident *const id = unique_ident("initializer");
3384 ir_type *const irtype = get_ir_type(type);
3385 ir_type *const global_type = get_glob_type();
3386 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3387 set_entity_ld_ident(init_entity, id);
3389 set_entity_variability(init_entity, variability_initialized);
3390 set_entity_visibility(init_entity, visibility_local);
3391 set_entity_allocation(init_entity, allocation_static);
3393 set_entity_initializer(init_entity, irinitializer);
3395 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3396 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3398 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3399 set_store(copyb_mem);
3402 static void create_initializer_local_variable_entity(declaration_t *declaration)
3404 initializer_t *initializer = declaration->init.initializer;
3405 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3406 ir_entity *entity = declaration->v.entity;
3407 type_t *type = declaration->type;
3408 create_local_initializer(initializer, dbgi, entity, type);
3411 static void create_declaration_initializer(declaration_t *declaration)
3413 initializer_t *initializer = declaration->init.initializer;
3414 if(initializer == NULL)
3417 declaration_kind_t declaration_kind
3418 = (declaration_kind_t) declaration->declaration_kind;
3419 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3420 create_initializer_local_variable_entity(declaration);
3424 if(initializer->kind == INITIALIZER_VALUE) {
3425 initializer_value_t *initializer_value = &initializer->value;
3427 ir_node *value = expression_to_firm(initializer_value->value);
3429 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3430 set_value(declaration->v.value_number, value);
3432 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3434 ir_entity *entity = declaration->v.entity;
3436 set_entity_variability(entity, variability_initialized);
3437 set_atomic_ent_value(entity, value);
3440 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3441 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3443 ir_entity *entity = declaration->v.entity;
3444 ir_initializer_t *irinitializer
3445 = create_ir_initializer(initializer, declaration->type);
3447 set_entity_variability(entity, variability_initialized);
3448 set_entity_initializer(entity, irinitializer);
3452 static void create_variable_length_array(declaration_t *declaration)
3454 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3455 type_t *type = declaration->type;
3456 ir_node *mem = get_store();
3457 ir_type *el_type = get_ir_type(type->array.element_type);
3459 /* make sure size_node is calculated */
3460 get_type_size(type);
3461 ir_node *elems = type->array.size_node;
3462 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3464 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3465 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3468 /* initializers are not allowed for VLAs */
3469 assert(declaration->init.initializer == NULL);
3471 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3472 declaration->v.vla_base = addr;
3474 /* TODO: record VLA somewhere so we create the free node when we leave
3479 * Creates a Firm local variable from a declaration.
3481 static void create_local_variable(declaration_t *declaration)
3483 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3485 bool needs_entity = declaration->address_taken;
3486 type_t *type = skip_typeref(declaration->type);
3488 /* is it a variable length array? */
3489 if(is_type_array(type) && !type->array.size_constant) {
3490 create_variable_length_array(declaration);
3492 } else if(is_type_array(type) || is_type_compound(type)) {
3493 needs_entity = true;
3494 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3495 needs_entity = true;
3499 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3500 create_declaration_entity(declaration,
3501 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3504 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3505 declaration->v.value_number = next_value_number_function;
3506 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3507 ++next_value_number_function;
3510 create_declaration_initializer(declaration);
3513 static void create_local_static_variable(declaration_t *declaration)
3515 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3517 type_t *const type = skip_typeref(declaration->type);
3518 ir_type *const global_type = get_glob_type();
3519 ident *const id = unique_ident(declaration->symbol->string);
3520 ir_type *const irtype = get_ir_type(type);
3521 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3522 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3523 set_entity_ld_ident(entity, id);
3525 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3526 set_entity_volatility(entity, volatility_is_volatile);
3529 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3530 declaration->v.entity = entity;
3531 set_entity_variability(entity, variability_uninitialized);
3532 set_entity_visibility(entity, visibility_local);
3533 set_entity_allocation(entity, allocation_static);
3535 ir_graph *const old_current_ir_graph = current_ir_graph;
3536 current_ir_graph = get_const_code_irg();
3538 create_declaration_initializer(declaration);
3540 assert(current_ir_graph == get_const_code_irg());
3541 current_ir_graph = old_current_ir_graph;
3546 static void return_statement_to_firm(return_statement_t *statement)
3548 if(get_cur_block() == NULL)
3551 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3552 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3557 if(get_method_n_ress(func_irtype) > 0) {
3558 ir_type *res_type = get_method_res_type(func_irtype, 0);
3560 if(statement->value != NULL) {
3561 ir_node *node = expression_to_firm(statement->value);
3562 node = do_strict_conv(dbgi, node);
3566 if(is_compound_type(res_type)) {
3569 mode = get_type_mode(res_type);
3571 in[0] = new_Unknown(mode);
3575 /* build return_value for its side effects */
3576 if(statement->value != NULL) {
3577 expression_to_firm(statement->value);
3582 ir_node *store = get_store();
3583 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3585 ir_node *end_block = get_irg_end_block(current_ir_graph);
3586 add_immBlock_pred(end_block, ret);
3588 set_cur_block(NULL);
3591 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3593 if(get_cur_block() == NULL)
3596 return expression_to_firm(statement->expression);
3599 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3601 ir_node *result = NULL;
3602 statement_t *statement = compound->statements;
3603 for( ; statement != NULL; statement = statement->base.next) {
3604 //context2firm(&statement->scope);
3606 if(statement->base.next == NULL
3607 && statement->kind == STATEMENT_EXPRESSION) {
3608 result = expression_statement_to_firm(
3609 &statement->expression);
3612 statement_to_firm(statement);
3618 static void create_global_variable(declaration_t *declaration)
3622 switch ((storage_class_tag_t)declaration->storage_class) {
3623 case STORAGE_CLASS_STATIC:
3624 vis = visibility_local;
3627 case STORAGE_CLASS_EXTERN:
3628 vis = visibility_external_allocated;
3631 case STORAGE_CLASS_NONE:
3632 vis = visibility_external_visible;
3635 case STORAGE_CLASS_THREAD:
3636 vis = visibility_external_visible;
3639 case STORAGE_CLASS_THREAD_EXTERN:
3640 vis = visibility_external_allocated;
3643 case STORAGE_CLASS_THREAD_STATIC:
3644 vis = visibility_local;
3648 var_type = get_tls_type();
3652 var_type = get_glob_type();
3656 create_declaration_entity(declaration,
3657 DECLARATION_KIND_GLOBAL_VARIABLE,
3659 set_entity_visibility(declaration->v.entity, vis);
3663 case STORAGE_CLASS_TYPEDEF:
3664 case STORAGE_CLASS_AUTO:
3665 case STORAGE_CLASS_REGISTER:
3666 case STORAGE_CLASS_ENUM_ENTRY:
3669 panic("Invalid storage class for global variable");
3672 static void create_local_declaration(declaration_t *declaration)
3674 if(declaration->symbol == NULL)
3677 type_t *type = skip_typeref(declaration->type);
3679 switch ((storage_class_tag_t) declaration->storage_class) {
3680 case STORAGE_CLASS_STATIC:
3681 create_local_static_variable(declaration);
3683 case STORAGE_CLASS_EXTERN:
3684 create_global_variable(declaration);
3685 create_declaration_initializer(declaration);
3687 case STORAGE_CLASS_NONE:
3688 case STORAGE_CLASS_AUTO:
3689 case STORAGE_CLASS_REGISTER:
3690 if(is_type_function(type)) {
3691 if(declaration->init.statement != NULL) {
3692 panic("nested functions not supported yet");
3694 get_function_entity(declaration);
3697 create_local_variable(declaration);
3700 case STORAGE_CLASS_ENUM_ENTRY:
3701 case STORAGE_CLASS_TYPEDEF:
3702 case STORAGE_CLASS_THREAD:
3703 case STORAGE_CLASS_THREAD_EXTERN:
3704 case STORAGE_CLASS_THREAD_STATIC:
3707 panic("invalid storage class found");
3710 static void declaration_statement_to_firm(declaration_statement_t *statement)
3712 declaration_t *declaration = statement->declarations_begin;
3713 declaration_t *end = statement->declarations_end->next;
3714 for( ; declaration != end; declaration = declaration->next) {
3715 if(declaration->namespc != NAMESPACE_NORMAL)
3717 create_local_declaration(declaration);
3721 static void if_statement_to_firm(if_statement_t *statement)
3723 ir_node *cur_block = get_cur_block();
3725 ir_node *fallthrough_block = new_immBlock();
3727 /* the true (blocks) */
3728 ir_node *true_block;
3729 if (statement->true_statement != NULL) {
3730 true_block = new_immBlock();
3731 statement_to_firm(statement->true_statement);
3732 if(get_cur_block() != NULL) {
3733 ir_node *jmp = new_Jmp();
3734 add_immBlock_pred(fallthrough_block, jmp);
3737 true_block = fallthrough_block;
3740 /* the false (blocks) */
3741 ir_node *false_block;
3742 if(statement->false_statement != NULL) {
3743 false_block = new_immBlock();
3745 statement_to_firm(statement->false_statement);
3746 if(get_cur_block() != NULL) {
3747 ir_node *jmp = new_Jmp();
3748 add_immBlock_pred(fallthrough_block, jmp);
3751 false_block = fallthrough_block;
3754 /* create the condition */
3755 if(cur_block != NULL) {
3756 set_cur_block(cur_block);
3757 create_condition_evaluation(statement->condition, true_block,
3761 mature_immBlock(true_block);
3762 if(false_block != fallthrough_block) {
3763 mature_immBlock(false_block);
3765 mature_immBlock(fallthrough_block);
3767 set_cur_block(fallthrough_block);
3770 static void while_statement_to_firm(while_statement_t *statement)
3772 ir_node *jmp = NULL;
3773 if(get_cur_block() != NULL) {
3777 /* create the header block */
3778 ir_node *header_block = new_immBlock();
3780 add_immBlock_pred(header_block, jmp);
3783 /* the false block */
3784 ir_node *false_block = new_immBlock();
3787 ir_node *body_block;
3788 if (statement->body != NULL) {
3789 ir_node *old_continue_label = continue_label;
3790 ir_node *old_break_label = break_label;
3791 continue_label = header_block;
3792 break_label = false_block;
3794 body_block = new_immBlock();
3795 statement_to_firm(statement->body);
3797 assert(continue_label == header_block);
3798 assert(break_label == false_block);
3799 continue_label = old_continue_label;
3800 break_label = old_break_label;
3802 if(get_cur_block() != NULL) {
3804 add_immBlock_pred(header_block, jmp);
3807 body_block = header_block;
3810 /* create the condition */
3811 set_cur_block(header_block);
3813 create_condition_evaluation(statement->condition, body_block, false_block);
3814 mature_immBlock(body_block);
3815 mature_immBlock(false_block);
3816 mature_immBlock(header_block);
3818 set_cur_block(false_block);
3821 static void do_while_statement_to_firm(do_while_statement_t *statement)
3823 ir_node *jmp = NULL;
3824 if(get_cur_block() != NULL) {
3828 /* create the header block */
3829 ir_node *header_block = new_immBlock();
3831 /* the false block */
3832 ir_node *false_block = new_immBlock();
3835 ir_node *body_block = new_immBlock();
3837 add_immBlock_pred(body_block, jmp);
3840 if (statement->body != NULL) {
3841 ir_node *old_continue_label = continue_label;
3842 ir_node *old_break_label = break_label;
3843 continue_label = header_block;
3844 break_label = false_block;
3846 statement_to_firm(statement->body);
3848 assert(continue_label == header_block);
3849 assert(break_label == false_block);
3850 continue_label = old_continue_label;
3851 break_label = old_break_label;
3853 if (get_cur_block() == NULL) {
3854 mature_immBlock(header_block);
3855 mature_immBlock(body_block);
3856 mature_immBlock(false_block);
3861 ir_node *body_jmp = new_Jmp();
3862 add_immBlock_pred(header_block, body_jmp);
3863 mature_immBlock(header_block);
3865 /* create the condition */
3866 set_cur_block(header_block);
3868 create_condition_evaluation(statement->condition, body_block, false_block);
3869 mature_immBlock(body_block);
3870 mature_immBlock(false_block);
3871 mature_immBlock(header_block);
3873 set_cur_block(false_block);
3876 static void for_statement_to_firm(for_statement_t *statement)
3878 ir_node *jmp = NULL;
3879 if (get_cur_block() != NULL) {
3880 if(statement->initialisation != NULL) {
3881 expression_to_firm(statement->initialisation);
3884 /* create declarations */
3885 declaration_t *declaration = statement->scope.declarations;
3886 for( ; declaration != NULL; declaration = declaration->next) {
3887 create_local_declaration(declaration);
3894 /* create the step block */
3895 ir_node *const step_block = new_immBlock();
3896 if (statement->step != NULL) {
3897 expression_to_firm(statement->step);
3899 ir_node *const step_jmp = new_Jmp();
3901 /* create the header block */
3902 ir_node *const header_block = new_immBlock();
3904 add_immBlock_pred(header_block, jmp);
3906 add_immBlock_pred(header_block, step_jmp);
3908 /* the false block */
3909 ir_node *const false_block = new_immBlock();
3912 ir_node * body_block;
3913 if (statement->body != NULL) {
3914 ir_node *const old_continue_label = continue_label;
3915 ir_node *const old_break_label = break_label;
3916 continue_label = step_block;
3917 break_label = false_block;
3919 body_block = new_immBlock();
3920 statement_to_firm(statement->body);
3922 assert(continue_label == step_block);
3923 assert(break_label == false_block);
3924 continue_label = old_continue_label;
3925 break_label = old_break_label;
3927 if (get_cur_block() != NULL) {
3929 add_immBlock_pred(step_block, jmp);
3932 body_block = step_block;
3935 /* create the condition */
3936 set_cur_block(header_block);
3937 if (statement->condition != NULL) {
3938 create_condition_evaluation(statement->condition, body_block,
3941 keep_alive(header_block);
3943 add_immBlock_pred(body_block, jmp);
3946 mature_immBlock(body_block);
3947 mature_immBlock(false_block);
3948 mature_immBlock(step_block);
3949 mature_immBlock(header_block);
3950 mature_immBlock(false_block);
3952 set_cur_block(false_block);
3955 static void create_jump_statement(const statement_t *statement,
3956 ir_node *target_block)
3958 if(get_cur_block() == NULL)
3961 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3962 ir_node *jump = new_d_Jmp(dbgi);
3963 add_immBlock_pred(target_block, jump);
3965 set_cur_block(NULL);
3968 static void switch_statement_to_firm(const switch_statement_t *statement)
3970 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3972 ir_node *expression = expression_to_firm(statement->expression);
3973 ir_node *cond = new_d_Cond(dbgi, expression);
3974 ir_node *break_block = new_immBlock();
3976 set_cur_block(NULL);
3978 ir_node *const old_switch_cond = current_switch_cond;
3979 ir_node *const old_break_label = break_label;
3980 const bool old_saw_default_label = saw_default_label;
3981 current_switch_cond = cond;
3982 break_label = break_block;
3984 if (statement->body != NULL) {
3985 statement_to_firm(statement->body);
3988 if(get_cur_block() != NULL) {
3989 ir_node *jmp = new_Jmp();
3990 add_immBlock_pred(break_block, jmp);
3993 if (!saw_default_label) {
3994 set_cur_block(get_nodes_block(cond));
3995 ir_node *const proj = new_d_defaultProj(dbgi, cond,
3996 MAGIC_DEFAULT_PN_NUMBER);
3997 add_immBlock_pred(break_block, proj);
4000 assert(current_switch_cond == cond);
4001 assert(break_label == break_block);
4002 current_switch_cond = old_switch_cond;
4003 break_label = old_break_label;
4004 saw_default_label = old_saw_default_label;
4006 mature_immBlock(break_block);
4007 set_cur_block(break_block);
4010 static void case_label_to_firm(const case_label_statement_t *statement)
4012 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4014 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4016 /* let's create a node and hope firm constant folding creates a Const
4019 ir_node *old_block = get_nodes_block(current_switch_cond);
4020 ir_node *block = new_immBlock();
4022 set_cur_block(old_block);
4023 if(statement->expression != NULL) {
4024 long start_pn = fold_constant(statement->expression);
4025 long end_pn = start_pn;
4026 if (statement->end_range != NULL) {
4027 end_pn = fold_constant(statement->end_range);
4029 assert(start_pn <= end_pn);
4030 /* create jumps for all cases in the given range */
4031 for (long pn = start_pn; pn <= end_pn; ++pn) {
4032 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4033 /* oops someone detected our cheating... */
4034 panic("magic default pn used");
4036 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4037 add_immBlock_pred(block, proj);
4040 saw_default_label = true;
4041 proj = new_d_defaultProj(dbgi, current_switch_cond,
4042 MAGIC_DEFAULT_PN_NUMBER);
4044 add_immBlock_pred(block, proj);
4047 if (fallthrough != NULL) {
4048 add_immBlock_pred(block, fallthrough);
4050 mature_immBlock(block);
4051 set_cur_block(block);
4053 if(statement->statement != NULL) {
4054 statement_to_firm(statement->statement);
4058 static ir_node *get_label_block(declaration_t *label)
4060 assert(label->namespc == NAMESPACE_LABEL);
4062 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4063 return label->v.block;
4065 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4067 ir_node *old_cur_block = get_cur_block();
4068 ir_node *block = new_immBlock();
4069 set_cur_block(old_cur_block);
4071 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4072 label->v.block = block;
4074 ARR_APP1(ir_node *, imature_blocks, block);
4079 static void label_to_firm(const label_statement_t *statement)
4081 ir_node *block = get_label_block(statement->label);
4083 if(get_cur_block() != NULL) {
4084 ir_node *jmp = new_Jmp();
4085 add_immBlock_pred(block, jmp);
4088 set_cur_block(block);
4091 if(statement->statement != NULL) {
4092 statement_to_firm(statement->statement);
4096 static void goto_to_firm(const goto_statement_t *statement)
4098 if(get_cur_block() == NULL)
4101 ir_node *block = get_label_block(statement->label);
4102 ir_node *jmp = new_Jmp();
4103 add_immBlock_pred(block, jmp);
4105 set_cur_block(NULL);
4108 typedef enum modifier_t {
4109 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4110 ASM_MODIFIER_READ_WRITE = 1 << 1,
4111 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4112 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4115 static void asm_statement_to_firm(const asm_statement_t *statement)
4118 fprintf(stderr, "WARNING asm not implemented yet!\n");
4120 bool needs_memory = false;
4122 size_t n_clobbers = 0;
4123 asm_clobber_t *clobber = statement->clobbers;
4124 for( ; clobber != NULL; clobber = clobber->next) {
4125 if(strcmp(clobber->clobber, "memory") == 0) {
4126 needs_memory = true;
4130 ident *id = new_id_from_str(clobber->clobber);
4131 obstack_ptr_grow(&asm_obst, id);
4134 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4135 ident **clobbers = NULL;
4136 if(n_clobbers > 0) {
4137 clobbers = obstack_finish(&asm_obst);
4140 /* find and count input and output constraints */
4141 asm_constraint_t *constraint = statement->inputs;
4142 for( ; constraint != NULL; constraint = constraint->next) {
4144 bool supports_memop = false;
4145 for(const char *c = constraint->constraints; *c != 0; ++c) {
4146 /* TODO: improve error messages */
4150 panic("multiple alternative assembler constraints not "
4158 supports_memop = true;
4159 obstack_1grow(&asm_obst, *c);
4162 if(modifiers & ASM_MODIFIER_READ_WRITE)
4163 panic("inconsistent register constraints");
4164 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4167 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4168 panic("inconsistent register constraints");
4169 modifiers |= ASM_MODIFIER_READ_WRITE;
4172 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4173 panic("early clobber assembler constraint not supported yet");
4176 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4177 panic("commutative assembler constraint not supported yet");
4180 /* skip register preferences stuff... */
4181 while(*c != 0 && *c != ',')
4185 /* skip register preferences stuff... */
4189 obstack_1grow(&asm_obst, *c);
4193 obstack_1grow(&asm_obst, '\0');
4194 const char *constraint_string = obstack_finish(&asm_obst);
4196 needs_memory |= supports_memop;
4197 if(supports_memop) {
4204 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4205 statement_to_firm(statement->try_statement);
4206 warningf(&statement->base.source_position, "structured exception handling ignored");
4209 static void leave_statement_to_firm(leave_statement_t *statement) {
4210 errorf(&statement->base.source_position, "__leave not supported yet");
4213 static void statement_to_firm(statement_t *statement)
4215 switch(statement->kind) {
4216 case STATEMENT_INVALID:
4217 panic("invalid statement found");
4219 case STATEMENT_EMPTY:
4222 case STATEMENT_COMPOUND:
4223 compound_statement_to_firm(&statement->compound);
4225 case STATEMENT_RETURN:
4226 return_statement_to_firm(&statement->returns);
4228 case STATEMENT_EXPRESSION:
4229 expression_statement_to_firm(&statement->expression);
4232 if_statement_to_firm(&statement->ifs);
4234 case STATEMENT_WHILE:
4235 while_statement_to_firm(&statement->whiles);
4237 case STATEMENT_DO_WHILE:
4238 do_while_statement_to_firm(&statement->do_while);
4240 case STATEMENT_DECLARATION:
4241 declaration_statement_to_firm(&statement->declaration);
4243 case STATEMENT_BREAK:
4244 create_jump_statement(statement, break_label);
4246 case STATEMENT_CONTINUE:
4247 create_jump_statement(statement, continue_label);
4249 case STATEMENT_SWITCH:
4250 switch_statement_to_firm(&statement->switchs);
4252 case STATEMENT_CASE_LABEL:
4253 case_label_to_firm(&statement->case_label);
4256 for_statement_to_firm(&statement->fors);
4258 case STATEMENT_LABEL:
4259 label_to_firm(&statement->label);
4261 case STATEMENT_GOTO:
4262 goto_to_firm(&statement->gotos);
4265 asm_statement_to_firm(&statement->asms);
4267 case STATEMENT_MS_TRY:
4268 ms_try_statement_to_firm(&statement->ms_try);
4270 case STATEMENT_LEAVE:
4271 leave_statement_to_firm(&statement->leave);
4274 panic("Statement not implemented\n");
4277 static int count_decls_in_expression(const expression_t *expression);
4279 static int count_local_declarations(const declaration_t * decl,
4280 const declaration_t *const end)
4283 for (; decl != end; decl = decl->next) {
4284 if(decl->namespc != NAMESPACE_NORMAL)
4286 const type_t *type = skip_typeref(decl->type);
4287 if (!decl->address_taken && is_type_scalar(type))
4289 const initializer_t *initializer = decl->init.initializer;
4290 /* FIXME: should walk initializer hierarchies... */
4291 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4292 count += count_decls_in_expression(initializer->value.value);
4298 static int count_decls_in_expression(const expression_t *expression) {
4301 if(expression == NULL)
4304 switch((expression_kind_t) expression->base.kind) {
4305 case EXPR_STATEMENT:
4306 return count_decls_in_stmts(expression->statement.statement);
4308 int count_left = count_decls_in_expression(expression->binary.left);
4309 int count_right = count_decls_in_expression(expression->binary.right);
4310 return count_left + count_right;
4313 return count_decls_in_expression(expression->unary.value);
4315 call_argument_t *argument = expression->call.arguments;
4316 for( ; argument != NULL; argument = argument->next) {
4317 count += count_decls_in_expression(argument->expression);
4324 panic("unexpected expression kind");
4326 case EXPR_COMPOUND_LITERAL:
4330 case EXPR_CONDITIONAL:
4331 count += count_decls_in_expression(expression->conditional.condition);
4332 count += count_decls_in_expression(expression->conditional.true_expression);
4333 count += count_decls_in_expression(expression->conditional.false_expression);
4336 case EXPR_BUILTIN_PREFETCH:
4337 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4338 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4339 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4342 case EXPR_BUILTIN_CONSTANT_P:
4343 count += count_decls_in_expression(expression->builtin_constant.value);
4347 count += count_decls_in_expression(expression->select.compound);
4350 case EXPR_ARRAY_ACCESS:
4351 count += count_decls_in_expression(expression->array_access.array_ref);
4352 count += count_decls_in_expression(expression->array_access.index);
4355 case EXPR_CLASSIFY_TYPE:
4356 count += count_decls_in_expression(expression->classify_type.type_expression);
4360 case EXPR_ALIGNOF: {
4361 expression_t *tp_expression = expression->typeprop.tp_expression;
4362 if (tp_expression != NULL) {
4363 count += count_decls_in_expression(tp_expression);
4369 case EXPR_REFERENCE:
4371 case EXPR_CHARACTER_CONSTANT:
4372 case EXPR_WIDE_CHARACTER_CONSTANT:
4373 case EXPR_STRING_LITERAL:
4374 case EXPR_WIDE_STRING_LITERAL:
4376 case EXPR_BUILTIN_SYMBOL:
4382 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4383 * (or implement all the missing expressions here/implement a walker)
4389 static int count_decls_in_stmts(const statement_t *stmt)
4392 for (; stmt != NULL; stmt = stmt->base.next) {
4393 switch (stmt->kind) {
4394 case STATEMENT_EMPTY:
4397 case STATEMENT_DECLARATION: {
4398 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4399 count += count_local_declarations(decl_stmt->declarations_begin,
4400 decl_stmt->declarations_end->next);
4404 case STATEMENT_COMPOUND: {
4405 const compound_statement_t *const comp =
4407 count += count_decls_in_stmts(comp->statements);
4411 case STATEMENT_IF: {
4412 const if_statement_t *const if_stmt = &stmt->ifs;
4413 count += count_decls_in_expression(if_stmt->condition);
4414 count += count_decls_in_stmts(if_stmt->true_statement);
4415 count += count_decls_in_stmts(if_stmt->false_statement);
4419 case STATEMENT_SWITCH: {
4420 const switch_statement_t *const switch_stmt = &stmt->switchs;
4421 count += count_decls_in_expression(switch_stmt->expression);
4422 count += count_decls_in_stmts(switch_stmt->body);
4426 case STATEMENT_LABEL: {
4427 const label_statement_t *const label_stmt = &stmt->label;
4428 if(label_stmt->statement != NULL) {
4429 count += count_decls_in_stmts(label_stmt->statement);
4434 case STATEMENT_WHILE: {
4435 const while_statement_t *const while_stmt = &stmt->whiles;
4436 count += count_decls_in_expression(while_stmt->condition);
4437 count += count_decls_in_stmts(while_stmt->body);
4441 case STATEMENT_DO_WHILE: {
4442 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4443 count += count_decls_in_expression(do_while_stmt->condition);
4444 count += count_decls_in_stmts(do_while_stmt->body);
4448 case STATEMENT_FOR: {
4449 const for_statement_t *const for_stmt = &stmt->fors;
4450 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4451 count += count_decls_in_expression(for_stmt->initialisation);
4452 count += count_decls_in_expression(for_stmt->condition);
4453 count += count_decls_in_expression(for_stmt->step);
4454 count += count_decls_in_stmts(for_stmt->body);
4458 case STATEMENT_CASE_LABEL: {
4459 const case_label_statement_t *label = &stmt->case_label;
4460 count += count_decls_in_expression(label->expression);
4461 if(label->statement != NULL) {
4462 count += count_decls_in_stmts(label->statement);
4468 case STATEMENT_BREAK:
4469 case STATEMENT_CONTINUE:
4472 case STATEMENT_EXPRESSION: {
4473 const expression_statement_t *expr_stmt = &stmt->expression;
4474 count += count_decls_in_expression(expr_stmt->expression);
4478 case STATEMENT_GOTO:
4479 case STATEMENT_LEAVE:
4480 case STATEMENT_INVALID:
4483 case STATEMENT_RETURN: {
4484 const return_statement_t *ret_stmt = &stmt->returns;
4485 count += count_decls_in_expression(ret_stmt->value);
4489 case STATEMENT_MS_TRY: {
4490 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4491 count += count_decls_in_stmts(try_stmt->try_statement);
4492 if(try_stmt->except_expression != NULL)
4493 count += count_decls_in_expression(try_stmt->except_expression);
4494 count += count_decls_in_stmts(try_stmt->final_statement);
4502 static int get_function_n_local_vars(declaration_t *declaration)
4506 /* count parameters */
4507 count += count_local_declarations(declaration->scope.declarations, NULL);
4509 /* count local variables declared in body */
4510 count += count_decls_in_stmts(declaration->init.statement);
4515 static void initialize_function_parameters(declaration_t *declaration)
4517 ir_graph *irg = current_ir_graph;
4518 ir_node *args = get_irg_args(irg);
4519 ir_node *start_block = get_irg_start_block(irg);
4520 ir_type *function_irtype = get_ir_type(declaration->type);
4523 declaration_t *parameter = declaration->scope.declarations;
4524 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4525 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4526 type_t *type = skip_typeref(parameter->type);
4528 bool needs_entity = parameter->address_taken;
4529 assert(!is_type_array(type));
4530 if(is_type_compound(type)) {
4531 needs_entity = true;
4535 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4536 ident *id = new_id_from_str(parameter->symbol->string);
4537 set_entity_ident(entity, id);
4539 parameter->declaration_kind
4540 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4541 parameter->v.entity = entity;
4545 ir_mode *mode = get_ir_mode(parameter->type);
4547 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4549 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4550 parameter->v.value_number = next_value_number_function;
4551 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4552 ++next_value_number_function;
4554 set_value(parameter->v.value_number, proj);
4559 * Handle additional decl modifiers for IR-graphs
4561 * @param irg the IR-graph
4562 * @param dec_modifiers additional modifiers
4564 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4566 if (decl_modifiers & DM_NORETURN) {
4567 /* TRUE if the declaration includes the Microsoft
4568 __declspec(noreturn) specifier. */
4569 set_irg_additional_property(irg, mtp_property_noreturn);
4571 if (decl_modifiers & DM_NOTHROW) {
4572 /* TRUE if the declaration includes the Microsoft
4573 __declspec(nothrow) specifier. */
4574 set_irg_additional_property(irg, mtp_property_nothrow);
4576 if (decl_modifiers & DM_NAKED) {
4577 /* TRUE if the declaration includes the Microsoft
4578 __declspec(naked) specifier. */
4579 set_irg_additional_property(irg, mtp_property_naked);
4581 if (decl_modifiers & DM_FORCEINLINE) {
4582 /* TRUE if the declaration includes the
4583 Microsoft __forceinline specifier. */
4584 set_irg_inline_property(irg, irg_inline_forced);
4586 if (decl_modifiers & DM_NOINLINE) {
4587 /* TRUE if the declaration includes the Microsoft
4588 __declspec(noinline) specifier. */
4589 set_irg_inline_property(irg, irg_inline_forbidden);
4593 static void create_function(declaration_t *declaration)
4595 ir_entity *function_entity = get_function_entity(declaration);
4597 if(declaration->init.statement == NULL)
4600 current_function_decl = declaration;
4601 current_function_name = NULL;
4602 current_funcsig = NULL;
4604 assert(imature_blocks == NULL);
4605 imature_blocks = NEW_ARR_F(ir_node*, 0);
4607 int n_local_vars = get_function_n_local_vars(declaration);
4608 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4609 ir_node *first_block = get_cur_block();
4611 /* set inline flags */
4612 if (declaration->is_inline)
4613 set_irg_inline_property(irg, irg_inline_recomended);
4614 handle_decl_modifier_irg(irg, declaration->modifiers);
4616 next_value_number_function = 0;
4617 initialize_function_parameters(declaration);
4619 statement_to_firm(declaration->init.statement);
4621 ir_node *end_block = get_irg_end_block(irg);
4623 /* do we have a return statement yet? */
4624 if(get_cur_block() != NULL) {
4625 type_t *type = skip_typeref(declaration->type);
4626 assert(is_type_function(type));
4627 const function_type_t *func_type = &type->function;
4628 const type_t *return_type
4629 = skip_typeref(func_type->return_type);
4632 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4633 ret = new_Return(get_store(), 0, NULL);
4636 if(is_type_scalar(return_type)) {
4637 mode = get_ir_mode(func_type->return_type);
4643 /* ยง5.1.2.2.3 main implicitly returns 0 */
4644 if (strcmp(declaration->symbol->string, "main") == 0) {
4645 in[0] = new_Const(mode, get_mode_null(mode));
4647 in[0] = new_Unknown(mode);
4649 ret = new_Return(get_store(), 1, in);
4651 add_immBlock_pred(end_block, ret);
4654 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4655 mature_immBlock(imature_blocks[i]);
4657 DEL_ARR_F(imature_blocks);
4658 imature_blocks = NULL;
4660 mature_immBlock(first_block);
4661 mature_immBlock(end_block);
4663 irg_finalize_cons(irg);
4665 /* finalize the frame type */
4666 ir_type *frame_type = get_irg_frame_type(irg);
4667 int n = get_compound_n_members(frame_type);
4670 for(int i = 0; i < n; ++i) {
4671 ir_entity *entity = get_compound_member(frame_type, i);
4672 ir_type *entity_type = get_entity_type(entity);
4674 int align = get_type_alignment_bytes(entity_type);
4675 if(align > align_all)
4679 misalign = offset % align;
4681 offset += align - misalign;
4685 set_entity_offset(entity, offset);
4686 offset += get_type_size_bytes(entity_type);
4688 set_type_size_bytes(frame_type, offset);
4689 set_type_alignment_bytes(frame_type, align_all);
4694 static void scope_to_firm(scope_t *scope)
4696 /* first pass: create declarations */
4697 declaration_t *declaration = scope->declarations;
4698 for( ; declaration != NULL; declaration = declaration->next) {
4699 if(declaration->namespc != NAMESPACE_NORMAL)
4701 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4702 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4704 if(declaration->symbol == NULL)
4707 type_t *type = skip_typeref(declaration->type);
4708 if(is_type_function(type)) {
4709 get_function_entity(declaration);
4711 create_global_variable(declaration);
4715 /* second pass: create code/initializers */
4716 declaration = scope->declarations;
4717 for( ; declaration != NULL; declaration = declaration->next) {
4718 if(declaration->namespc != NAMESPACE_NORMAL)
4720 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4721 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4723 if(declaration->symbol == NULL)
4726 type_t *type = declaration->type;
4727 if(type->kind == TYPE_FUNCTION) {
4728 create_function(declaration);
4730 assert(declaration->declaration_kind
4731 == DECLARATION_KIND_GLOBAL_VARIABLE);
4732 current_ir_graph = get_const_code_irg();
4733 create_declaration_initializer(declaration);
4738 void init_ast2firm(void)
4740 obstack_init(&asm_obst);
4741 init_atomic_modes();
4743 /* create idents for all known runtime functions */
4744 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4745 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4749 static void init_ir_types(void)
4751 static int ir_types_initialized = 0;
4752 if(ir_types_initialized)
4754 ir_types_initialized = 1;
4756 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4757 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4758 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4760 ir_type_int = get_ir_type(type_int);
4761 ir_type_const_char = get_ir_type(type_const_char);
4762 ir_type_wchar_t = get_ir_type(type_wchar_t);
4763 ir_type_void = get_ir_type(type_void);
4766 void exit_ast2firm(void)
4768 obstack_free(&asm_obst, NULL);
4771 void translation_unit_to_firm(translation_unit_t *unit)
4773 /* just to be sure */
4774 continue_label = NULL;
4776 current_switch_cond = NULL;
4780 scope_to_firm(&unit->scope);