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 /* some idents needed for name mangling */
47 static ident *id_underscore;
50 static ir_type *ir_type_const_char;
51 static ir_type *ir_type_wchar_t;
52 static ir_type *ir_type_void;
53 static ir_type *ir_type_int;
55 static type_t *type_const_char;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static ir_node **imature_blocks;
64 static const declaration_t *current_function_decl;
65 static ir_node *current_function_name;
66 static ir_node *current_funcsig;
68 static struct obstack asm_obst;
70 typedef enum declaration_kind_t {
71 DECLARATION_KIND_UNKNOWN,
72 DECLARATION_KIND_FUNCTION,
73 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
74 DECLARATION_KIND_GLOBAL_VARIABLE,
75 DECLARATION_KIND_LOCAL_VARIABLE,
76 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
77 DECLARATION_KIND_COMPOUND_MEMBER,
78 DECLARATION_KIND_LABEL_BLOCK,
79 DECLARATION_KIND_ENUM_ENTRY
82 static ir_type *get_ir_type(type_t *type);
83 static int count_decls_in_stmts(const statement_t *stmt);
85 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
87 const declaration_t *declaration = get_irg_loc_description(irg, pos);
89 warningf(&declaration->source_position,
90 "variable '%#T' might be used uninitialized",
91 declaration->type, declaration->symbol);
92 return new_r_Unknown(irg, mode);
95 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
97 const source_position_t *pos = (const source_position_t*) dbg;
100 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
104 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
106 const source_position_t *pos = (const source_position_t*) dbg;
111 return pos->input_name;
114 static dbg_info *get_dbg_info(const source_position_t *pos)
116 return (dbg_info*) pos;
119 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
121 static ir_mode *mode_int, *mode_uint;
123 static ir_node *expression_to_firm(const expression_t *expression);
124 static inline ir_mode *get_ir_mode(type_t *type);
126 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
128 unsigned flags = get_atomic_type_flags(kind);
129 unsigned size = get_atomic_type_size(kind);
130 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
131 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
134 unsigned bit_size = size * 8;
135 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
136 mode_arithmetic arithmetic;
137 unsigned modulo_shift;
139 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
140 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
141 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
142 sort = irms_int_number;
143 arithmetic = irma_twos_complement;
144 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
146 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
147 snprintf(name, sizeof(name), "f%d", bit_size);
148 sort = irms_float_number;
149 arithmetic = irma_ieee754;
152 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
160 * Initialises the atomic modes depending on the machine size.
162 static void init_atomic_modes(void)
164 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
165 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
167 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
168 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
170 /* there's no real void type in firm */
171 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
173 /* initialize pointer modes */
175 mode_sort sort = irms_reference;
176 unsigned bit_size = machine_size;
178 mode_arithmetic arithmetic = irma_twos_complement;
179 unsigned modulo_shift
180 = bit_size < machine_size ? machine_size : bit_size;
182 snprintf(name, sizeof(name), "p%d", machine_size);
183 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
186 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
187 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
189 /* Hmm, pointers should be machine size */
190 set_modeP_data(ptr_mode);
191 set_modeP_code(ptr_mode);
194 static unsigned get_compound_type_size(compound_type_t *type)
196 ir_type *irtype = get_ir_type((type_t*) type);
197 return get_type_size_bytes(irtype);
200 static unsigned get_array_type_size(array_type_t *type)
202 assert(!type->is_vla);
203 ir_type *irtype = get_ir_type((type_t*) type);
204 return get_type_size_bytes(irtype);
208 static unsigned get_type_size_const(type_t *type)
210 type = skip_typeref(type);
214 panic("error type occured");
216 return get_atomic_type_size(type->atomic.akind);
218 return 2 * get_atomic_type_size(type->complex.akind);
220 return get_atomic_type_size(type->imaginary.akind);
222 return get_mode_size_bytes(mode_int);
223 case TYPE_COMPOUND_UNION:
224 case TYPE_COMPOUND_STRUCT:
225 return get_compound_type_size(&type->compound);
227 /* just a pointer to the function */
228 return get_mode_size_bytes(mode_P_code);
230 return get_mode_size_bytes(mode_P_data);
232 return get_array_type_size(&type->array);
234 return get_type_size_const(type->builtin.real_type);
236 panic("type size of bitfield request");
242 panic("Trying to determine size of invalid type");
245 static ir_node *get_type_size(type_t *type)
247 type = skip_typeref(type);
249 if(is_type_array(type) && type->array.is_vla) {
250 ir_node *size_node = type->array.size_node;
251 if(size_node == NULL) {
252 size_node = expression_to_firm(type->array.size_expression);
253 assert(!is_Const(size_node));
254 type->array.size_node = size_node;
257 ir_node *elem_size = get_type_size(type->array.element_type);
258 ir_mode *mode = get_irn_mode(size_node);
259 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
263 ir_mode *mode = get_ir_mode(type_size_t);
265 sym.type_p = get_ir_type(type);
266 return new_SymConst(mode, sym, symconst_type_size);
269 static unsigned count_parameters(const function_type_t *function_type)
273 function_parameter_t *parameter = function_type->parameters;
274 for ( ; parameter != NULL; parameter = parameter->next) {
282 * Creates a Firm type for an atomic type
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 ident *id = get_mode_ident(mode);
290 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
292 set_type_alignment_bytes(irtype, type->base.alignment);
298 * Creates a Firm type for a complex type
300 static ir_type *create_complex_type(const complex_type_t *type)
302 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
303 atomic_type_kind_t kind = type->akind;
304 ir_mode *mode = _atomic_modes[kind];
305 ident *id = get_mode_ident(mode);
310 /* FIXME: finish the array */
315 * Creates a Firm type for an imaginary type
317 static ir_type *create_imaginary_type(const imaginary_type_t *type)
319 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
320 atomic_type_kind_t kind = type->akind;
321 ir_mode *mode = _atomic_modes[kind];
322 ident *id = get_mode_ident(mode);
323 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
325 set_type_alignment_bytes(irtype, type->base.alignment);
330 static ir_type *create_method_type(const function_type_t *function_type)
332 type_t *return_type = function_type->return_type;
334 ident *id = id_unique("functiontype.%u");
335 int n_parameters = count_parameters(function_type);
336 int n_results = return_type == type_void ? 0 : 1;
337 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
338 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
340 if(return_type != type_void) {
341 ir_type *restype = get_ir_type(return_type);
342 set_method_res_type(irtype, 0, restype);
345 function_parameter_t *parameter = function_type->parameters;
347 for( ; parameter != NULL; parameter = parameter->next) {
348 ir_type *p_irtype = get_ir_type(parameter->type);
349 set_method_param_type(irtype, n, p_irtype);
353 if(function_type->variadic || function_type->unspecified_parameters) {
354 set_method_variadicity(irtype, variadicity_variadic);
360 static ir_type *create_pointer_type(pointer_type_t *type)
362 type_t *points_to = type->points_to;
363 ir_type *ir_points_to;
364 /* Avoid endless recursion if the points_to type contains this poiner type
365 * again (might be a struct). We therefore first create a void* pointer
366 * and then set the real points_to type
368 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
369 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
370 ir_type_void, mode_P_data, dbgi);
371 type->base.firm_type = ir_type;
373 ir_points_to = get_ir_type(points_to);
374 set_pointer_points_to_type(ir_type, ir_points_to);
379 static ir_type *create_array_type(array_type_t *type)
381 type_t *element_type = type->element_type;
382 ir_type *ir_element_type = get_ir_type(element_type);
384 ident *id = id_unique("array.%u");
385 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
386 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
388 const int align = get_type_alignment_bytes(ir_element_type);
389 set_type_alignment_bytes(ir_type, align);
391 if(type->size_constant) {
392 int n_elements = type->size;
394 set_array_bounds_int(ir_type, 0, 0, n_elements);
396 size_t elemsize = get_type_size_bytes(ir_element_type);
397 if(elemsize % align > 0) {
398 elemsize += align - (elemsize % align);
400 set_type_size_bytes(ir_type, n_elements * elemsize);
402 set_array_lower_bound_int(ir_type, 0, 0);
404 set_type_state(ir_type, layout_fixed);
410 * Return the signed integer type of size bits.
412 * @param size the size
414 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
417 static ir_mode *s_modes[64 + 1] = {NULL, };
421 if (size <= 0 || size > 64)
424 mode = s_modes[size];
428 snprintf(name, sizeof(name), "bf_I%u", size);
429 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
430 size <= 32 ? 32 : size );
431 s_modes[size] = mode;
435 snprintf(name, sizeof(name), "I%u", size);
436 ident *id = new_id_from_str(name);
437 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
438 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
439 set_primitive_base_type(res, base_tp);
445 * Return the unsigned integer type of size bits.
447 * @param size the size
449 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
452 static ir_mode *u_modes[64 + 1] = {NULL, };
456 if (size <= 0 || size > 64)
459 mode = u_modes[size];
463 snprintf(name, sizeof(name), "bf_U%u", size);
464 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
465 size <= 32 ? 32 : size );
466 u_modes[size] = mode;
471 snprintf(name, sizeof(name), "U%u", size);
472 ident *id = new_id_from_str(name);
473 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
474 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
475 set_primitive_base_type(res, base_tp);
480 static ir_type *create_bitfield_type(bitfield_type_t *const type)
482 type_t *base = skip_typeref(type->base_type);
483 assert(base->kind == TYPE_ATOMIC);
484 ir_type *irbase = get_ir_type(base);
486 unsigned size = fold_constant(type->size);
488 assert(!is_type_float(base));
489 if(is_type_signed(base)) {
490 return get_signed_int_type_for_bit_size(irbase, size);
492 return get_unsigned_int_type_for_bit_size(irbase, size);
496 #define INVALID_TYPE ((ir_type_ptr)-1)
498 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
499 size_t *outer_offset, size_t *outer_align);
501 static ir_type *create_struct_type(compound_type_t *type, ir_type *irtype,
502 size_t *outer_offset, size_t *outer_align)
504 declaration_t *declaration = type->declaration;
505 if(declaration->v.irtype != NULL) {
506 return declaration->v.irtype;
509 size_t align_all = 1;
511 size_t bit_offset = 0;
513 symbol_t *symbol = declaration->symbol;
516 id = new_id_from_str(symbol->string);
518 id = id_unique("__anonymous_struct.%u");
520 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
522 irtype = new_d_type_struct(id, dbgi);
524 declaration->v.irtype = irtype;
525 type->base.firm_type = irtype;
527 offset = *outer_offset;
528 align_all = *outer_align;
531 declaration_t *entry = declaration->scope.declarations;
532 for( ; entry != NULL; entry = entry->next) {
533 if(entry->namespc != NAMESPACE_NORMAL)
536 symbol_t *symbol = entry->symbol;
537 type_t *entry_type = skip_typeref(entry->type);
538 dbg_info *dbgi = get_dbg_info(&entry->source_position);
541 ident = new_id_from_str(symbol->string);
543 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
544 create_struct_type(&entry_type->compound, irtype, &offset,
547 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
548 create_union_type(&entry_type->compound, irtype, &offset,
552 assert(entry_type->kind == TYPE_BITFIELD);
554 ident = id_unique("anon.%u");
557 ir_type *base_irtype;
558 if(entry_type->kind == TYPE_BITFIELD) {
559 base_irtype = get_ir_type(entry_type->bitfield.base_type);
561 base_irtype = get_ir_type(entry_type);
564 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
565 size_t misalign = offset % entry_alignment;
567 ir_type *entry_irtype = get_ir_type(entry_type);
568 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
571 size_t bits_remainder;
572 if(entry_type->kind == TYPE_BITFIELD) {
573 size_t size_bits = fold_constant(entry_type->bitfield.size);
574 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
576 if(size_bits > rest_size_bits) {
577 /* start a new bucket */
578 offset += entry_alignment - misalign;
584 /* put into current bucket */
585 base = offset - misalign;
586 bits_remainder = misalign * 8 + bit_offset;
589 offset += size_bits / 8;
590 bit_offset = bit_offset + (size_bits % 8);
592 size_t entry_size = get_type_size_bytes(base_irtype);
593 if(misalign > 0 || bit_offset > 0)
594 offset += entry_alignment - misalign;
598 offset += entry_size;
602 if(entry_alignment > align_all) {
603 if(entry_alignment % align_all != 0) {
604 panic("uneven alignments not supported yet");
606 align_all = entry_alignment;
609 set_entity_offset(entity, base);
610 set_entity_offset_bits_remainder(entity,
611 (unsigned char) bits_remainder);
612 //add_struct_member(irtype, entity);
613 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
614 assert(entry->v.entity == NULL);
615 entry->v.entity = entity;
618 size_t misalign = offset % align_all;
619 if(misalign > 0 || bit_offset > 0) {
620 offset += align_all - misalign;
623 if(outer_offset != NULL) {
624 *outer_offset = offset;
625 *outer_align = align_all;
627 set_type_alignment_bytes(irtype, align_all);
628 set_type_size_bytes(irtype, offset);
629 set_type_state(irtype, layout_fixed);
635 static ir_type *create_union_type(compound_type_t *type, ir_type *irtype,
636 size_t *outer_offset, size_t *outer_align)
638 declaration_t *declaration = type->declaration;
639 if(declaration->v.irtype != NULL) {
640 return declaration->v.irtype;
643 size_t align_all = 1;
648 symbol_t *symbol = declaration->symbol;
651 id = new_id_from_str(symbol->string);
653 id = id_unique("__anonymous_union.%u");
655 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
657 irtype = new_d_type_union(id, dbgi);
659 declaration->v.irtype = irtype;
660 type->base.firm_type = irtype;
662 offset = *outer_offset;
663 align_all = *outer_align;
666 type->base.firm_type = irtype;
668 declaration_t *entry = declaration->scope.declarations;
669 for( ; entry != NULL; entry = entry->next) {
670 if(entry->namespc != NAMESPACE_NORMAL)
673 symbol_t *symbol = entry->symbol;
674 type_t *entry_type = skip_typeref(entry->type);
675 ir_type *entry_ir_type = get_ir_type(entry_type);
679 ident = new_id_from_str(entry->symbol->string);
681 size_t offs = offset;
682 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
683 create_struct_type(&entry_type->compound, irtype, &offs,
686 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
687 create_union_type(&entry_type->compound, irtype, &offs,
691 panic("anonymous union member must be struct or union");
693 size_t entry_size = offs - offset;
694 if(entry_size > size) {
697 ident = id_unique("anon.%u");
700 size_t entry_size = get_type_size_bytes(entry_ir_type);
701 size_t entry_alignment = get_type_alignment_bytes(entry_ir_type);
703 dbg_info *const dbgi = get_dbg_info(&entry->source_position);
704 ir_entity *const entity = new_d_entity(irtype, ident, entry_ir_type,
706 //add_union_member(irtype, entity);
707 set_entity_offset(entity, 0);
708 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
709 assert(entry->v.entity == NULL);
710 entry->v.entity = entity;
712 if(entry_size > size) {
715 if(entry_alignment > align_all) {
716 if(entry_alignment % align_all != 0) {
717 panic("Uneven alignments not supported yet");
719 align_all = entry_alignment;
723 if(outer_offset != NULL) {
724 assert(*outer_offset == offset);
726 size_t misalign = offset % align_all;
728 size += align_all - misalign;
729 *outer_offset += size;
731 if(align_all > *outer_align) {
732 if(align_all % *outer_align != 0) {
733 panic("uneven alignments not supported yet");
735 *outer_align = align_all;
738 set_type_alignment_bytes(irtype, align_all);
739 set_type_size_bytes(irtype, size);
740 set_type_state(irtype, layout_fixed);
741 declaration->v.irtype = irtype;
747 static ir_type *create_enum_type(enum_type_t *const type)
749 type->base.firm_type = ir_type_int;
751 ir_mode *const mode = mode_int;
752 tarval *const one = get_mode_one(mode);
753 tarval * tv_next = get_tarval_null(mode);
755 declaration_t *declaration = type->declaration->next;
756 for (; declaration != NULL; declaration = declaration->next) {
757 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
760 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
762 expression_t *const init = declaration->init.enum_value;
764 ir_node *const cnst = expression_to_firm(init);
765 if (!is_Const(cnst)) {
766 panic("couldn't fold constant");
768 tv_next = get_Const_tarval(cnst);
770 declaration->v.enum_val = tv_next;
771 tv_next = tarval_add(tv_next, one);
777 static ir_type *get_ir_type(type_t *type)
779 assert(type != NULL);
781 type = skip_typeref(type);
783 if(type->base.firm_type != NULL) {
784 assert(type->base.firm_type != INVALID_TYPE);
785 return type->base.firm_type;
788 ir_type *firm_type = NULL;
791 panic("error type occurred");
793 firm_type = create_atomic_type(&type->atomic);
796 firm_type = create_complex_type(&type->complex);
799 firm_type = create_imaginary_type(&type->imaginary);
802 firm_type = create_method_type(&type->function);
805 firm_type = create_pointer_type(&type->pointer);
808 firm_type = create_array_type(&type->array);
810 case TYPE_COMPOUND_STRUCT:
811 firm_type = create_struct_type(&type->compound, NULL, NULL, NULL);
813 case TYPE_COMPOUND_UNION:
814 firm_type = create_union_type(&type->compound, NULL, NULL, NULL);
817 firm_type = create_enum_type(&type->enumt);
820 firm_type = get_ir_type(type->builtin.real_type);
823 firm_type = create_bitfield_type(&type->bitfield);
831 if(firm_type == NULL)
832 panic("unknown type found");
834 type->base.firm_type = firm_type;
838 static inline ir_mode *get_ir_mode(type_t *type)
840 ir_type *irtype = get_ir_type(type);
842 /* firm doesn't report a mode for arrays somehow... */
843 if(is_Array_type(irtype)) {
847 ir_mode *mode = get_type_mode(irtype);
848 assert(mode != NULL);
852 static ident *predef_idents[rts_max];
854 /** Names of the runtime functions. */
855 static const struct {
856 int id; /**< the rts id */
857 int n_res; /**< number of return values */
858 const char *name; /**< the name of the rts function */
859 int n_params; /**< number of parameters */
860 unsigned flags; /**< language flags */
862 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
863 { rts_abort, 0, "abort", 0, _C89 },
864 { rts_abs, 1, "abs", 1, _C89 },
865 { rts_labs, 1, "labs", 1, _C89 },
866 { rts_llabs, 1, "llabs", 1, _C99 },
867 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
869 { rts_fabs, 1, "fabs", 1, _C89 },
870 { rts_sqrt, 1, "sqrt", 1, _C89 },
871 { rts_cbrt, 1, "cbrt", 1, _C99 },
872 { rts_exp, 1, "exp", 1, _C89 },
873 { rts_exp2, 1, "exp2", 1, _C89 },
874 { rts_exp10, 1, "exp10", 1, _GNUC },
875 { rts_log, 1, "log", 1, _C89 },
876 { rts_log2, 1, "log2", 1, _C89 },
877 { rts_log10, 1, "log10", 1, _C89 },
878 { rts_pow, 1, "pow", 2, _C89 },
879 { rts_sin, 1, "sin", 1, _C89 },
880 { rts_cos, 1, "cos", 1, _C89 },
881 { rts_tan, 1, "tan", 1, _C89 },
882 { rts_asin, 1, "asin", 1, _C89 },
883 { rts_acos, 1, "acos", 1, _C89 },
884 { rts_atan, 1, "atan", 1, _C89 },
885 { rts_sinh, 1, "sinh", 1, _C89 },
886 { rts_cosh, 1, "cosh", 1, _C89 },
887 { rts_tanh, 1, "tanh", 1, _C89 },
889 { rts_fabsf, 1, "fabsf", 1, _C99 },
890 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
891 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
892 { rts_expf, 1, "expf", 1, _C99 },
893 { rts_exp2f, 1, "exp2f", 1, _C99 },
894 { rts_exp10f, 1, "exp10f", 1, _GNUC },
895 { rts_logf, 1, "logf", 1, _C99 },
896 { rts_log2f, 1, "log2f", 1, _C99 },
897 { rts_log10f, 1, "log10f", 1, _C99 },
898 { rts_powf, 1, "powf", 2, _C99 },
899 { rts_sinf, 1, "sinf", 1, _C99 },
900 { rts_cosf, 1, "cosf", 1, _C99 },
901 { rts_tanf, 1, "tanf", 1, _C99 },
902 { rts_asinf, 1, "asinf", 1, _C99 },
903 { rts_acosf, 1, "acosf", 1, _C99 },
904 { rts_atanf, 1, "atanf", 1, _C99 },
905 { rts_sinhf, 1, "sinhf", 1, _C99 },
906 { rts_coshf, 1, "coshf", 1, _C99 },
907 { rts_tanhf, 1, "tanhf", 1, _C99 },
909 { rts_fabsl, 1, "fabsl", 1, _C99 },
910 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
911 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
912 { rts_expl, 1, "expl", 1, _C99 },
913 { rts_exp2l, 1, "exp2l", 1, _C99 },
914 { rts_exp10l, 1, "exp10l", 1, _GNUC },
915 { rts_logl, 1, "logl", 1, _C99 },
916 { rts_log2l, 1, "log2l", 1, _C99 },
917 { rts_log10l, 1, "log10l", 1, _C99 },
918 { rts_powl, 1, "powl", 2, _C99 },
919 { rts_sinl, 1, "sinl", 1, _C99 },
920 { rts_cosl, 1, "cosl", 1, _C99 },
921 { rts_tanl, 1, "tanl", 1, _C99 },
922 { rts_asinl, 1, "asinl", 1, _C99 },
923 { rts_acosl, 1, "acosl", 1, _C99 },
924 { rts_atanl, 1, "atanl", 1, _C99 },
925 { rts_sinhl, 1, "sinhl", 1, _C99 },
926 { rts_coshl, 1, "coshl", 1, _C99 },
927 { rts_tanhl, 1, "tanhl", 1, _C99 },
929 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
930 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
931 { rts_strcmp, 1, "strcmp", 2, _C89 },
932 { rts_strncmp, 1, "strncmp", 3, _C89 }
936 * Mangles an entity linker (ld) name for win32 usage.
938 * @param ent the entity to be mangled
939 * @param declaration the declaration
941 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
945 if (is_Method_type(get_entity_type(ent)))
946 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
948 /* always add an underscore in win32 */
949 id = mangle(id_underscore, get_entity_ident(ent));
952 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
953 if (decl_modifiers & DM_DLLIMPORT) {
954 /* add prefix for imported symbols */
955 id = mangle(id_imp, id);
961 * Mangles an entity linker (ld) name for Linux ELF usage.
963 * @param ent the entity to be mangled
964 * @param declaration the declaration
966 static ident *create_ld_ident_linux_elf(ir_entity *entity,
967 declaration_t *declaration)
970 return get_entity_ident(entity);
974 * Mangles an entity linker (ld) name for Mach-O usage.
976 * @param ent the entity to be mangled
977 * @param declaration the declaration
979 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
982 ident *id = mangle(id_underscore, get_entity_ident(ent));
986 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
987 declaration_t *declaration);
988 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
990 static ir_entity* get_function_entity(declaration_t *declaration)
992 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
993 return declaration->v.entity;
994 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
996 symbol_t *symbol = declaration->symbol;
997 ident *id = new_id_from_str(symbol->string);
999 ir_type *global_type = get_glob_type();
1000 ir_type *ir_type_method = get_ir_type(declaration->type);
1001 assert(is_Method_type(ir_type_method));
1003 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1004 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1005 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1006 if(declaration->storage_class == STORAGE_CLASS_STATIC
1007 || declaration->is_inline) {
1008 set_entity_visibility(entity, visibility_local);
1009 } else if(declaration->init.statement != NULL) {
1010 set_entity_visibility(entity, visibility_external_visible);
1012 set_entity_visibility(entity, visibility_external_allocated);
1014 /* We should check for file scope here, but as long as we compile C only
1015 this is not needed. */
1016 int n_params = get_method_n_params(ir_type_method);
1017 int n_res = get_method_n_ress(ir_type_method);
1020 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
1021 /* found abort(), store for later */
1025 if (! firm_opt.freestanding) {
1026 /* check for a known runtime function */
1027 for (i = 0; i < rts_max; ++i) {
1028 /* ignore those rts functions not necessary needed for current mode */
1029 if ((c_mode & rts_data[i].flags) == 0)
1031 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
1032 id == predef_idents[rts_data[i].id])
1033 rts_entities[rts_data[i].id] = entity;
1038 set_entity_allocation(entity, allocation_static);
1040 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1041 declaration->v.entity = entity;
1046 static ir_node *const_to_firm(const const_expression_t *cnst)
1048 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1049 ir_mode *mode = get_ir_mode(cnst->base.type);
1054 if(mode_is_float(mode)) {
1055 tv = new_tarval_from_double(cnst->v.float_value, mode);
1057 if(mode_is_signed(mode)) {
1058 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1060 len = snprintf(buf, sizeof(buf), "%llu",
1061 (unsigned long long) cnst->v.int_value);
1063 tv = new_tarval_from_str(buf, len, mode);
1066 return new_d_Const(dbgi, mode, tv);
1069 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1071 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1072 ir_mode *mode = get_ir_mode(cnst->base.type);
1074 long long int v = 0;
1075 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1076 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1079 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1080 tarval *tv = new_tarval_from_str(buf, len, mode);
1082 return new_d_Const(dbgi, mode, tv);
1085 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1087 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1088 ir_mode *mode = get_ir_mode(cnst->base.type);
1090 long long int v = cnst->v.wide_character.begin[0];
1093 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1094 tarval *tv = new_tarval_from_str(buf, len, mode);
1096 return new_d_Const(dbgi, mode, tv);
1099 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1102 assert(entity != NULL);
1103 union symconst_symbol sym;
1104 sym.entity_p = entity;
1105 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1108 static ir_node *string_to_firm(const source_position_t *const src_pos,
1109 const char *const id_prefix,
1110 const string_t *const value)
1112 ir_type *const global_type = get_glob_type();
1113 dbg_info *const dbgi = get_dbg_info(src_pos);
1114 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1115 ir_type_const_char, dbgi);
1117 ident *const id = id_unique(id_prefix);
1118 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1119 set_entity_ld_ident(entity, id);
1120 set_entity_variability(entity, variability_constant);
1121 set_entity_allocation(entity, allocation_static);
1123 ir_type *const elem_type = ir_type_const_char;
1124 ir_mode *const mode = get_type_mode(elem_type);
1126 const char* const string = value->begin;
1127 const size_t slen = value->size;
1129 set_array_lower_bound_int(type, 0, 0);
1130 set_array_upper_bound_int(type, 0, slen);
1131 set_type_size_bytes(type, slen);
1132 set_type_state(type, layout_fixed);
1134 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1135 for(size_t i = 0; i < slen; ++i) {
1136 tvs[i] = new_tarval_from_long(string[i], mode);
1139 set_array_entity_values(entity, tvs, slen);
1142 return create_symconst(dbgi, mode_P_data, entity);
1145 static ir_node *string_literal_to_firm(
1146 const string_literal_expression_t* literal)
1148 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1152 static ir_node *wide_string_literal_to_firm(
1153 const wide_string_literal_expression_t* const literal)
1155 ir_type *const global_type = get_glob_type();
1156 ir_type *const elem_type = ir_type_wchar_t;
1157 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1158 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1161 ident *const id = id_unique("Lstr.%u");
1162 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1163 set_entity_ld_ident(entity, id);
1164 set_entity_variability(entity, variability_constant);
1165 set_entity_allocation(entity, allocation_static);
1167 ir_mode *const mode = get_type_mode(elem_type);
1169 const wchar_rep_t *const string = literal->value.begin;
1170 const size_t slen = literal->value.size;
1172 set_array_lower_bound_int(type, 0, 0);
1173 set_array_upper_bound_int(type, 0, slen);
1174 set_type_size_bytes(type, slen);
1175 set_type_state(type, layout_fixed);
1177 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1178 for(size_t i = 0; i < slen; ++i) {
1179 tvs[i] = new_tarval_from_long(string[i], mode);
1182 set_array_entity_values(entity, tvs, slen);
1185 return create_symconst(dbgi, mode_P_data, entity);
1188 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1189 dbg_info *const dbgi)
1191 ir_type *irtype = get_ir_type(type);
1192 if (is_compound_type(irtype)
1193 || is_Method_type(irtype)
1194 || is_Array_type(irtype)) {
1198 ir_mode *const mode = get_type_mode(irtype);
1199 ir_node *const memory = get_store();
1200 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1201 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1202 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1204 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1205 set_Load_volatility(load, volatility_is_volatile);
1208 set_store(load_mem);
1212 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1214 ir_mode *mode = get_irn_mode(node);
1216 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1218 if(!mode_is_float(mode))
1221 /* check if there is already a Conv */
1222 if (get_irn_op(node) == op_Conv) {
1223 /* convert it into a strict Conv */
1224 set_Conv_strict(node, 1);
1228 /* otherwise create a new one */
1229 return new_d_strictConv(dbgi, node, mode);
1232 static ir_node *get_global_var_address(dbg_info *const dbgi,
1233 const declaration_t *const decl)
1235 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1237 ir_entity *const entity = decl->v.entity;
1238 switch ((storage_class_tag_t)decl->storage_class) {
1239 case STORAGE_CLASS_THREAD:
1240 case STORAGE_CLASS_THREAD_EXTERN:
1241 case STORAGE_CLASS_THREAD_STATIC: {
1242 ir_node *const no_mem = new_NoMem();
1243 ir_node *const tls = get_irg_tls(current_ir_graph);
1244 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1248 return create_symconst(dbgi, mode_P_data, entity);
1252 /* Returns the correct base address depending on whether it is a parameter or a
1253 * normal local variable */
1254 static ir_node *get_local_frame(ir_entity *const ent)
1256 ir_graph *const irg = current_ir_graph;
1257 const ir_type *const owner = get_entity_owner(ent);
1258 if (owner == get_irg_frame_type(irg)) {
1259 return get_irg_frame(irg);
1261 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1262 return get_irg_value_param_base(irg);
1266 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1268 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1269 declaration_t *declaration = ref->declaration;
1270 type_t *type = skip_typeref(declaration->type);
1272 switch((declaration_kind_t) declaration->declaration_kind) {
1273 case DECLARATION_KIND_UNKNOWN:
1274 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1280 case DECLARATION_KIND_ENUM_ENTRY: {
1281 ir_mode *const mode = get_ir_mode(type);
1282 return new_Const(mode, declaration->v.enum_val);
1285 case DECLARATION_KIND_LOCAL_VARIABLE: {
1286 ir_mode *const mode = get_ir_mode(type);
1287 return get_value(declaration->v.value_number, mode);
1289 case DECLARATION_KIND_FUNCTION: {
1290 ir_mode *const mode = get_ir_mode(type);
1291 return create_symconst(dbgi, mode, declaration->v.entity);
1293 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1294 ir_node *const addr = get_global_var_address(dbgi, declaration);
1295 return deref_address(declaration->type, addr, dbgi);
1298 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1299 ir_entity *entity = declaration->v.entity;
1300 ir_node *frame = get_local_frame(entity);
1301 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1302 return deref_address(declaration->type, sel, dbgi);
1305 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1306 return declaration->v.vla_base;
1308 case DECLARATION_KIND_COMPOUND_MEMBER:
1309 case DECLARATION_KIND_LABEL_BLOCK:
1310 panic("not implemented reference type");
1313 panic("reference to declaration with unknown type found");
1316 static ir_node *reference_addr(const reference_expression_t *ref)
1318 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1319 declaration_t *declaration = ref->declaration;
1321 switch((declaration_kind_t) declaration->declaration_kind) {
1322 case DECLARATION_KIND_UNKNOWN:
1324 case DECLARATION_KIND_LOCAL_VARIABLE:
1325 panic("local variable without entity has no address");
1326 case DECLARATION_KIND_FUNCTION: {
1327 type_t *const type = skip_typeref(ref->base.type);
1328 ir_mode *const mode = get_ir_mode(type);
1329 return create_symconst(dbgi, mode, declaration->v.entity);
1331 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1332 ir_node *const addr = get_global_var_address(dbgi, declaration);
1335 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1336 ir_entity *entity = declaration->v.entity;
1337 ir_node *frame = get_local_frame(entity);
1338 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1343 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1344 return declaration->v.vla_base;
1346 case DECLARATION_KIND_ENUM_ENTRY:
1347 panic("trying to reference enum entry");
1349 case DECLARATION_KIND_COMPOUND_MEMBER:
1350 case DECLARATION_KIND_LABEL_BLOCK:
1351 panic("not implemented reference type");
1354 panic("reference to declaration with unknown type found");
1357 static ir_node *process_builtin_call(const call_expression_t *call)
1359 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1361 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1362 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1364 type_t *type = skip_typeref(builtin->base.type);
1365 assert(is_type_pointer(type));
1367 type_t *function_type = skip_typeref(type->pointer.points_to);
1368 symbol_t *symbol = builtin->symbol;
1370 switch(symbol->ID) {
1371 case T___builtin_alloca: {
1372 if(call->arguments == NULL || call->arguments->next != NULL) {
1373 panic("invalid number of parameters on __builtin_alloca");
1375 expression_t *argument = call->arguments->expression;
1376 ir_node *size = expression_to_firm(argument);
1378 ir_node *store = get_store();
1379 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1381 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1383 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1387 case T___builtin_nan:
1388 case T___builtin_nanf:
1389 case T___builtin_nand: {
1390 /* Ignore string for now... */
1391 assert(is_type_function(function_type));
1392 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1393 tarval *tv = get_mode_NAN(mode);
1394 ir_node *res = new_d_Const(dbgi, mode, tv);
1397 case T___builtin_va_end:
1400 panic("Unsupported builtin found\n");
1404 static ir_node *call_expression_to_firm(const call_expression_t *call)
1406 assert(get_cur_block() != NULL);
1408 expression_t *function = call->function;
1409 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1410 return process_builtin_call(call);
1412 ir_node *callee = expression_to_firm(function);
1414 type_t *type = skip_typeref(function->base.type);
1415 assert(is_type_pointer(type));
1416 pointer_type_t *pointer_type = &type->pointer;
1417 type_t *points_to = skip_typeref(pointer_type->points_to);
1418 assert(is_type_function(points_to));
1419 function_type_t *function_type = &points_to->function;
1421 int n_parameters = 0;
1422 call_argument_t *argument = call->arguments;
1423 for( ; argument != NULL; argument = argument->next) {
1427 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1429 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1430 ir_type *new_method_type = NULL;
1431 if(function_type->variadic || function_type->unspecified_parameters) {
1432 /* we need to construct a new method type matching the call
1434 int n_res = get_method_n_ress(ir_method_type);
1435 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1436 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1437 n_parameters, n_res, dbgi);
1438 set_method_calling_convention(new_method_type,
1439 get_method_calling_convention(ir_method_type));
1440 set_method_additional_properties(new_method_type,
1441 get_method_additional_properties(ir_method_type));
1443 for(int i = 0; i < n_res; ++i) {
1444 set_method_res_type(new_method_type, i,
1445 get_method_res_type(ir_method_type, i));
1448 ir_node *in[n_parameters];
1450 argument = call->arguments;
1452 for( ; argument != NULL; argument = argument->next) {
1453 expression_t *expression = argument->expression;
1454 ir_node *arg_node = expression_to_firm(expression);
1456 arg_node = do_strict_conv(dbgi, arg_node);
1459 if(new_method_type != NULL) {
1460 ir_type *irtype = get_ir_type(expression->base.type);
1461 set_method_param_type(new_method_type, n, irtype);
1466 assert(n == n_parameters);
1468 if(new_method_type != NULL)
1469 ir_method_type = new_method_type;
1471 ir_node *store = get_store();
1472 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1474 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1477 type_t *return_type = skip_typeref(function_type->return_type);
1478 ir_node *result = NULL;
1480 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1482 if(is_type_scalar(return_type)) {
1483 mode = get_ir_mode(return_type);
1487 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1488 result = new_d_Proj(dbgi, resproj, mode, 0);
1494 static void statement_to_firm(statement_t *statement);
1495 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1497 static ir_node *expression_to_addr(const expression_t *expression);
1498 static void create_condition_evaluation(const expression_t *expression,
1499 ir_node *true_block,
1500 ir_node *false_block);
1502 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1505 value = do_strict_conv(dbgi, value);
1507 ir_node *memory = get_store();
1509 if(is_type_scalar(type)) {
1510 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1511 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1512 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1513 set_Store_volatility(store, volatility_is_volatile);
1514 set_store(store_mem);
1516 ir_type *irtype = get_ir_type(type);
1517 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1518 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1519 set_store(copyb_mem);
1523 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1525 tarval *all_one = get_mode_all_one(mode);
1526 int mode_size = get_mode_size_bits(mode);
1528 assert(offset >= 0 && size >= 0);
1529 assert(offset + size <= mode_size);
1530 if(size == mode_size) {
1534 long shiftr = get_mode_size_bits(mode) - size;
1535 long shiftl = offset;
1536 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1537 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1538 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1539 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1544 static void bitfield_store_to_firm(const unary_expression_t *expression,
1547 expression_t *select = expression->value;
1548 assert(select->kind == EXPR_SELECT);
1549 type_t *type = select->base.type;
1550 assert(type->kind == TYPE_BITFIELD);
1551 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1552 ir_node *addr = expression_to_addr(select);
1554 assert(get_irn_mode(value) == mode);
1556 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1558 /* kill upper bits of value and shift to right position */
1559 ir_entity *entity = select->select.compound_entry->v.entity;
1560 int bitoffset = get_entity_offset_bits_remainder(entity);
1561 ir_type *entity_type = get_entity_type(entity);
1562 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1564 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1565 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1566 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1567 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1568 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1569 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1571 /* load current value */
1572 ir_node *mem = get_store();
1573 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1574 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1575 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1576 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1577 tarval *inv_mask = tarval_not(shift_mask);
1578 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1579 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1581 /* construct new value and store */
1582 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1583 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1584 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1585 set_store(store_mem);
1587 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1588 set_Load_volatility(load, volatility_is_volatile);
1589 set_Store_volatility(store, volatility_is_volatile);
1593 static void set_value_for_expression(const expression_t *expression,
1596 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1597 value = do_strict_conv(dbgi, value);
1599 if(expression->kind == EXPR_REFERENCE) {
1600 const reference_expression_t *ref = &expression->reference;
1602 declaration_t *declaration = ref->declaration;
1603 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1604 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1605 set_value(declaration->v.value_number, value);
1610 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1611 bitfield_store_to_firm(&expression->unary, value);
1615 ir_node *addr = expression_to_addr(expression);
1616 type_t *type = skip_typeref(expression->base.type);
1617 assign_value(dbgi, addr, type, value);
1620 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1622 ir_mode *value_mode = get_irn_mode(value);
1624 if (value_mode == dest_mode || is_Bad(value))
1627 if(dest_mode == mode_b) {
1628 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1629 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1630 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1634 return new_d_Conv(dbgi, value, dest_mode);
1637 static ir_node *create_incdec(const unary_expression_t *expression)
1639 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1640 type_t *type = skip_typeref(expression->base.type);
1641 ir_mode *mode = get_ir_mode(type);
1642 expression_t *value = expression->value;
1644 ir_node *value_node = expression_to_firm(value);
1647 if(is_type_pointer(type)) {
1648 pointer_type_t *pointer_type = &type->pointer;
1649 offset = get_type_size(pointer_type->points_to);
1651 assert(is_type_arithmetic(type));
1652 offset = new_Const(mode, get_mode_one(mode));
1655 switch(expression->base.kind) {
1656 case EXPR_UNARY_POSTFIX_INCREMENT: {
1657 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1658 set_value_for_expression(value, new_value);
1661 case EXPR_UNARY_POSTFIX_DECREMENT: {
1662 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1663 set_value_for_expression(value, new_value);
1666 case EXPR_UNARY_PREFIX_INCREMENT: {
1667 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1668 set_value_for_expression(value, new_value);
1671 case EXPR_UNARY_PREFIX_DECREMENT: {
1672 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1673 set_value_for_expression(value, new_value);
1677 panic("no incdec expr in create_incdec");
1682 static bool is_local_variable(expression_t *expression)
1684 if (expression->kind != EXPR_REFERENCE)
1686 reference_expression_t *ref_expr = &expression->reference;
1687 declaration_t *declaration = ref_expr->declaration;
1688 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1691 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1694 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1695 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1696 case EXPR_BINARY_NOTEQUAL:
1697 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1698 case EXPR_BINARY_ISLESS:
1699 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1700 case EXPR_BINARY_ISLESSEQUAL:
1701 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1702 case EXPR_BINARY_ISGREATER:
1703 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1704 case EXPR_BINARY_ISGREATEREQUAL:
1705 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1706 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1711 panic("trying to get pn_Cmp from non-comparison binexpr type");
1715 * Handle the assume optimizer hint: check if a Confirm
1716 * node can be created.
1718 * @param dbi debug info
1719 * @param expr the IL assume expression
1721 * we support here only some simple cases:
1726 static ir_node *handle_assume_compare(dbg_info *dbi,
1727 const binary_expression_t *expression)
1729 expression_t *op1 = expression->left;
1730 expression_t *op2 = expression->right;
1731 declaration_t *var2, *var = NULL;
1732 ir_node *res = NULL;
1735 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1737 if (is_local_variable(op1) && is_local_variable(op2)) {
1738 var = op1->reference.declaration;
1739 var2 = op2->reference.declaration;
1741 type_t *const type = skip_typeref(var->type);
1742 ir_mode *const mode = get_ir_mode(type);
1744 ir_node *const irn1 = get_value(var->v.value_number, mode);
1745 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1747 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1748 set_value(var2->v.value_number, res);
1750 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1751 set_value(var->v.value_number, res);
1757 if (is_local_variable(op1) && is_constant_expression(op2)) {
1758 var = op1->reference.declaration;
1760 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1761 cmp_val = get_inversed_pnc(cmp_val);
1762 var = op2->reference.declaration;
1767 type_t *const type = skip_typeref(var->type);
1768 ir_mode *const mode = get_ir_mode(type);
1770 res = get_value(var->v.value_number, mode);
1771 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1772 set_value(var->v.value_number, res);
1778 * Handle the assume optimizer hint.
1780 * @param dbi debug info
1781 * @param expr the IL assume expression
1783 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1784 switch(expression->kind) {
1785 case EXPR_BINARY_EQUAL:
1786 case EXPR_BINARY_NOTEQUAL:
1787 case EXPR_BINARY_LESS:
1788 case EXPR_BINARY_LESSEQUAL:
1789 case EXPR_BINARY_GREATER:
1790 case EXPR_BINARY_GREATEREQUAL:
1791 return handle_assume_compare(dbi, &expression->binary);
1797 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1799 expression_t *select = expression->value;
1800 assert(select->kind == EXPR_SELECT);
1802 type_t *type = select->base.type;
1803 assert(type->kind == TYPE_BITFIELD);
1804 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1805 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1806 ir_node *addr = expression_to_addr(select);
1807 ir_node *mem = get_store();
1808 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1809 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1810 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1812 load_res = create_conv(dbgi, load_res, mode_int);
1814 set_store(load_mem);
1816 /* kill upper bits */
1817 ir_entity *entity = select->select.compound_entry->v.entity;
1818 int bitoffset = get_entity_offset_bits_remainder(entity);
1819 ir_type *entity_type = get_entity_type(entity);
1820 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1821 long shift_bitsl = machine_size - bitoffset - bitsize;
1822 assert(shift_bitsl >= 0);
1823 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1824 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1825 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1827 long shift_bitsr = bitoffset + shift_bitsl;
1828 assert(shift_bitsr <= (long) machine_size);
1829 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1830 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1832 if(mode_is_signed(mode)) {
1833 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1835 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1838 return create_conv(dbgi, shiftr, mode);
1841 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1843 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1844 type_t *type = skip_typeref(expression->base.type);
1846 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1847 return expression_to_addr(expression->value);
1849 const expression_t *value = expression->value;
1851 switch(expression->base.kind) {
1852 case EXPR_UNARY_NEGATE: {
1853 ir_node *value_node = expression_to_firm(value);
1854 ir_mode *mode = get_ir_mode(type);
1855 return new_d_Minus(dbgi, value_node, mode);
1857 case EXPR_UNARY_PLUS:
1858 return expression_to_firm(value);
1859 case EXPR_UNARY_BITWISE_NEGATE: {
1860 ir_node *value_node = expression_to_firm(value);
1861 ir_mode *mode = get_ir_mode(type);
1862 return new_d_Not(dbgi, value_node, mode);
1864 case EXPR_UNARY_NOT: {
1865 ir_node *value_node = expression_to_firm(value);
1866 ir_mode *mode = get_ir_mode(type);
1867 if(get_irn_mode(value_node) != mode_b) {
1868 value_node = create_conv(dbgi, value_node, mode_b);
1870 value_node = new_d_Not(dbgi, value_node, mode_b);
1871 if(mode != mode_b) {
1872 value_node = create_conv(dbgi, value_node, mode);
1876 case EXPR_UNARY_DEREFERENCE: {
1877 ir_node *value_node = expression_to_firm(value);
1878 type_t *value_type = skip_typeref(value->base.type);
1879 assert(is_type_pointer(value_type));
1880 type_t *points_to = value_type->pointer.points_to;
1881 return deref_address(points_to, value_node, dbgi);
1883 case EXPR_UNARY_POSTFIX_INCREMENT:
1884 case EXPR_UNARY_POSTFIX_DECREMENT:
1885 case EXPR_UNARY_PREFIX_INCREMENT:
1886 case EXPR_UNARY_PREFIX_DECREMENT:
1887 return create_incdec(expression);
1888 case EXPR_UNARY_CAST: {
1889 ir_node *value_node = expression_to_firm(value);
1890 if(is_type_scalar(type)) {
1891 ir_mode *mode = get_ir_mode(type);
1892 ir_node *node = create_conv(dbgi, value_node, mode);
1893 node = do_strict_conv(dbgi, node);
1896 /* make sure firm type is constructed */
1897 (void) get_ir_type(type);
1901 case EXPR_UNARY_CAST_IMPLICIT: {
1902 ir_node *value_node = expression_to_firm(value);
1903 if(is_type_scalar(type)) {
1904 ir_mode *mode = get_ir_mode(type);
1905 return create_conv(dbgi, value_node, mode);
1910 case EXPR_UNARY_ASSUME:
1911 if(firm_opt.confirm)
1912 return handle_assume(dbgi, value);
1915 case EXPR_UNARY_BITFIELD_EXTRACT:
1916 return bitfield_extract_to_firm(expression);
1921 panic("invalid UNEXPR type found");
1924 static ir_node *produce_condition_result(const expression_t *expression,
1927 ir_mode *mode = get_ir_mode(expression->base.type);
1928 ir_node *cur_block = get_cur_block();
1930 ir_node *one_block = new_immBlock();
1931 ir_node *one = new_Const(mode, get_mode_one(mode));
1932 ir_node *jmp_one = new_d_Jmp(dbgi);
1934 ir_node *zero_block = new_immBlock();
1935 ir_node *zero = new_Const(mode, get_mode_null(mode));
1936 ir_node *jmp_zero = new_d_Jmp(dbgi);
1938 set_cur_block(cur_block);
1939 create_condition_evaluation(expression, one_block, zero_block);
1940 mature_immBlock(one_block);
1941 mature_immBlock(zero_block);
1943 ir_node *common_block = new_immBlock();
1944 add_immBlock_pred(common_block, jmp_one);
1945 add_immBlock_pred(common_block, jmp_zero);
1946 mature_immBlock(common_block);
1948 ir_node *in[2] = { one, zero };
1949 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1954 static ir_node *create_lazy_op(const binary_expression_t *expression)
1956 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1957 type_t *type = expression->base.type;
1958 ir_mode *mode = get_ir_mode(type);
1960 if(is_constant_expression(expression->left)) {
1961 long val = fold_constant(expression->left);
1962 expression_kind_t ekind = expression->base.kind;
1963 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1964 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1965 return expression_to_firm(expression->right);
1967 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1968 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1969 return new_Const(mode, get_mode_one(mode));
1973 return produce_condition_result((const expression_t*) expression, dbgi);
1976 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1977 ir_node *right, ir_mode *mode);
1979 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1980 create_arithmetic_func func)
1982 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1983 ir_node *left = expression_to_firm(expression->left);
1984 ir_node *right = expression_to_firm(expression->right);
1985 type_t *type = expression->right->base.type;
1986 /* be careful with the modes, because in arithmetic assign nodes only
1987 * the right operand has the mode of the arithmetic already */
1988 ir_mode *mode = get_ir_mode(type);
1989 left = create_conv(dbgi, left, mode);
1990 ir_node *res = func(dbgi, left, right, mode);
1995 static ir_node *pointer_arithmetic(ir_node *const pointer,
1998 dbg_info *const dbgi,
1999 const create_arithmetic_func func)
2001 pointer_type_t *const pointer_type = &type->pointer;
2002 type_t *const points_to = pointer_type->points_to;
2003 const unsigned elem_size = get_type_size_const(points_to);
2005 assert(elem_size >= 1);
2006 if (elem_size > 1) {
2007 integer = create_conv(dbgi, integer, mode_int);
2008 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2009 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
2013 ir_mode *const mode = get_ir_mode(type);
2014 return func(dbgi, pointer, integer, mode);
2017 static ir_node *create_arithmetic_assign_binop(
2018 const binary_expression_t *expression, create_arithmetic_func func)
2020 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2021 type_t *const type = skip_typeref(expression->base.type);
2024 if (is_type_pointer(type)) {
2025 ir_node *const pointer = expression_to_firm(expression->left);
2026 ir_node * integer = expression_to_firm(expression->right);
2027 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2029 value = create_arithmetic_binop(expression, func);
2032 ir_mode *const mode = get_ir_mode(type);
2033 value = create_conv(dbgi, value, mode);
2034 set_value_for_expression(expression->left, value);
2039 static ir_node *create_add(const binary_expression_t *expression)
2041 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2042 ir_node *left = expression_to_firm(expression->left);
2043 ir_node *right = expression_to_firm(expression->right);
2044 type_t *type = expression->base.type;
2046 expression_t *expr_left = expression->left;
2047 expression_t *expr_right = expression->right;
2048 type_t *type_left = skip_typeref(expr_left->base.type);
2049 type_t *type_right = skip_typeref(expr_right->base.type);
2051 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2052 ir_mode *const mode = get_ir_mode(type);
2053 return new_d_Add(dbgi, left, right, mode);
2056 if (is_type_pointer(type_left)) {
2057 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2059 assert(is_type_pointer(type_right));
2060 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2064 static ir_node *create_sub(const binary_expression_t *expression)
2066 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2067 expression_t *const expr_left = expression->left;
2068 expression_t *const expr_right = expression->right;
2069 ir_node *const left = expression_to_firm(expr_left);
2070 ir_node *const right = expression_to_firm(expr_right);
2071 type_t *const type = expression->base.type;
2072 type_t *const type_left = skip_typeref(expr_left->base.type);
2073 type_t *const type_right = skip_typeref(expr_right->base.type);
2075 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2076 ir_mode *const mode = get_ir_mode(type);
2077 return new_d_Sub(dbgi, left, right, mode);
2078 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2079 const pointer_type_t *const ptr_type = &type_left->pointer;
2081 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2082 ir_mode *const mode = get_ir_mode(type);
2083 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2084 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2085 ir_node *const no_mem = new_NoMem();
2086 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2087 op_pin_state_floats);
2088 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2091 assert(is_type_pointer(type_left));
2092 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2095 static ir_node *create_shift(const binary_expression_t *expression)
2097 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2098 ir_node *left = expression_to_firm(expression->left);
2099 ir_node *right = expression_to_firm(expression->right);
2100 type_t *type = expression->base.type;
2101 ir_mode *mode = get_ir_mode(type);
2103 /* firm always wants the shift count to be unsigned */
2104 right = create_conv(dbgi, right, mode_uint);
2108 switch(expression->base.kind) {
2109 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2110 case EXPR_BINARY_SHIFTLEFT:
2111 res = new_d_Shl(dbgi, left, right, mode);
2113 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2114 case EXPR_BINARY_SHIFTRIGHT: {
2115 expression_t *expr_left = expression->left;
2116 type_t *type_left = skip_typeref(expr_left->base.type);
2118 if(is_type_signed(type_left)) {
2119 res = new_d_Shrs(dbgi, left, right, mode);
2121 res = new_d_Shr(dbgi, left, right, mode);
2126 panic("create shift op called for non-shift op");
2133 static ir_node *create_divmod(const binary_expression_t *expression)
2135 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2136 ir_node *left = expression_to_firm(expression->left);
2137 ir_node *right = expression_to_firm(expression->right);
2138 ir_node *pin = new_Pin(new_NoMem());
2139 /* be careful with the modes, because in arithmetic assign nodes only
2140 * the right operand has the mode of the arithmetic already */
2141 type_t *type = expression->right->base.type;
2142 ir_mode *mode = get_ir_mode(type);
2143 left = create_conv(dbgi, left, mode);
2147 switch (expression->base.kind) {
2148 case EXPR_BINARY_DIV:
2149 case EXPR_BINARY_DIV_ASSIGN:
2150 if(mode_is_float(mode)) {
2151 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2152 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2154 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2155 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2159 case EXPR_BINARY_MOD:
2160 case EXPR_BINARY_MOD_ASSIGN:
2161 assert(!mode_is_float(mode));
2162 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2163 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2166 default: panic("unexpected binary expression type in create_divmod()");
2172 static ir_node *create_arithmetic_assign_divmod(
2173 const binary_expression_t *expression)
2175 ir_node * value = create_divmod(expression);
2176 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2177 type_t *const type = expression->base.type;
2178 ir_mode *const mode = get_ir_mode(type);
2180 assert(type->kind != TYPE_POINTER);
2182 value = create_conv(dbgi, value, mode);
2183 set_value_for_expression(expression->left, value);
2188 static ir_node *create_arithmetic_assign_shift(
2189 const binary_expression_t *expression)
2191 ir_node * value = create_shift(expression);
2192 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2193 type_t *const type = expression->base.type;
2194 ir_mode *const mode = get_ir_mode(type);
2196 value = create_conv(dbgi, value, mode);
2197 set_value_for_expression(expression->left, value);
2202 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2204 expression_kind_t kind = expression->base.kind;
2207 case EXPR_BINARY_EQUAL:
2208 case EXPR_BINARY_NOTEQUAL:
2209 case EXPR_BINARY_LESS:
2210 case EXPR_BINARY_LESSEQUAL:
2211 case EXPR_BINARY_GREATER:
2212 case EXPR_BINARY_GREATEREQUAL:
2213 case EXPR_BINARY_ISGREATER:
2214 case EXPR_BINARY_ISGREATEREQUAL:
2215 case EXPR_BINARY_ISLESS:
2216 case EXPR_BINARY_ISLESSEQUAL:
2217 case EXPR_BINARY_ISLESSGREATER:
2218 case EXPR_BINARY_ISUNORDERED: {
2219 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2220 ir_node *left = expression_to_firm(expression->left);
2221 ir_node *right = expression_to_firm(expression->right);
2222 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2223 long pnc = get_pnc(kind, expression->left->base.type);
2224 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2227 case EXPR_BINARY_ASSIGN: {
2228 ir_node *right = expression_to_firm(expression->right);
2229 set_value_for_expression(expression->left, right);
2233 case EXPR_BINARY_ADD:
2234 return create_add(expression);
2235 case EXPR_BINARY_SUB:
2236 return create_sub(expression);
2237 case EXPR_BINARY_MUL:
2238 return create_arithmetic_binop(expression, new_d_Mul);
2239 case EXPR_BINARY_BITWISE_AND:
2240 return create_arithmetic_binop(expression, new_d_And);
2241 case EXPR_BINARY_BITWISE_OR:
2242 return create_arithmetic_binop(expression, new_d_Or);
2243 case EXPR_BINARY_BITWISE_XOR:
2244 return create_arithmetic_binop(expression, new_d_Eor);
2245 case EXPR_BINARY_SHIFTLEFT:
2246 case EXPR_BINARY_SHIFTRIGHT:
2247 return create_shift(expression);
2248 case EXPR_BINARY_DIV:
2249 case EXPR_BINARY_MOD:
2250 return create_divmod(expression);
2251 case EXPR_BINARY_LOGICAL_AND:
2252 case EXPR_BINARY_LOGICAL_OR:
2253 return create_lazy_op(expression);
2254 case EXPR_BINARY_COMMA:
2255 expression_to_firm(expression->left);
2256 return expression_to_firm(expression->right);
2257 case EXPR_BINARY_ADD_ASSIGN:
2258 return create_arithmetic_assign_binop(expression, new_d_Add);
2259 case EXPR_BINARY_SUB_ASSIGN:
2260 return create_arithmetic_assign_binop(expression, new_d_Sub);
2261 case EXPR_BINARY_MUL_ASSIGN:
2262 return create_arithmetic_assign_binop(expression, new_d_Mul);
2263 case EXPR_BINARY_MOD_ASSIGN:
2264 case EXPR_BINARY_DIV_ASSIGN:
2265 return create_arithmetic_assign_divmod(expression);
2266 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2267 return create_arithmetic_assign_binop(expression, new_d_And);
2268 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2269 return create_arithmetic_assign_binop(expression, new_d_Or);
2270 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2271 return create_arithmetic_assign_binop(expression, new_d_Eor);
2272 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2273 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2274 return create_arithmetic_assign_shift(expression);
2275 case EXPR_BINARY_BUILTIN_EXPECT:
2276 return expression_to_firm(expression->left);
2278 panic("TODO binexpr type");
2282 static ir_node *array_access_addr(const array_access_expression_t *expression)
2284 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2285 ir_node *base_addr = expression_to_firm(expression->array_ref);
2286 ir_node *offset = expression_to_firm(expression->index);
2287 offset = create_conv(dbgi, offset, mode_uint);
2289 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2290 assert(is_type_pointer(ref_type));
2291 pointer_type_t *pointer_type = &ref_type->pointer;
2293 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2294 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2296 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2301 static ir_node *array_access_to_firm(
2302 const array_access_expression_t *expression)
2304 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2305 ir_node *addr = array_access_addr(expression);
2306 type_t *type = revert_automatic_type_conversion(
2307 (const expression_t*) expression);
2308 type = skip_typeref(type);
2310 return deref_address(type, addr, dbgi);
2313 static long get_offsetof_offset(const offsetof_expression_t *expression)
2315 type_t *orig_type = expression->type;
2318 designator_t *designator = expression->designator;
2319 for( ; designator != NULL; designator = designator->next) {
2320 type_t *type = skip_typeref(orig_type);
2321 /* be sure the type is constructed */
2322 (void) get_ir_type(type);
2324 if(designator->symbol != NULL) {
2325 assert(is_type_compound(type));
2326 symbol_t *symbol = designator->symbol;
2328 declaration_t *declaration = type->compound.declaration;
2329 declaration_t *iter = declaration->scope.declarations;
2330 for( ; iter != NULL; iter = iter->next) {
2331 if(iter->symbol == symbol) {
2335 assert(iter != NULL);
2337 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2338 offset += get_entity_offset(iter->v.entity);
2340 orig_type = iter->type;
2342 expression_t *array_index = designator->array_index;
2343 assert(designator->array_index != NULL);
2344 assert(is_type_array(type));
2345 assert(is_type_valid(array_index->base.type));
2347 long index = fold_constant(array_index);
2348 ir_type *arr_type = get_ir_type(type);
2349 ir_type *elem_type = get_array_element_type(arr_type);
2350 long elem_size = get_type_size_bytes(elem_type);
2352 offset += index * elem_size;
2354 orig_type = type->array.element_type;
2361 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2363 ir_mode *mode = get_ir_mode(expression->base.type);
2364 long offset = get_offsetof_offset(expression);
2365 tarval *tv = new_tarval_from_long(offset, mode);
2366 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2368 return new_d_Const(dbgi, mode, tv);
2371 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2372 ir_entity *entity, type_t *type);
2374 static ir_node *compound_literal_to_firm(
2375 const compound_literal_expression_t *expression)
2377 type_t *type = expression->type;
2379 /* create an entity on the stack */
2380 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2382 ident *const id = id_unique("CompLit.%u");
2383 ir_type *const irtype = get_ir_type(type);
2384 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2385 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2386 set_entity_ld_ident(entity, id);
2388 set_entity_variability(entity, variability_uninitialized);
2390 /* create initialisation code */
2391 initializer_t *initializer = expression->initializer;
2392 create_local_initializer(initializer, dbgi, entity, type);
2394 /* create a sel for the compound literal address */
2395 ir_node *frame = get_local_frame(entity);
2396 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2401 * Transform a sizeof expression into Firm code.
2403 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2405 type_t *type = expression->type;
2407 type = expression->tp_expression->base.type;
2408 assert(type != NULL);
2411 type = skip_typeref(type);
2412 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2413 if(is_type_array(type) && type->array.is_vla
2414 && expression->tp_expression != NULL) {
2415 expression_to_firm(expression->tp_expression);
2418 return get_type_size(type);
2422 * Transform an alignof expression into Firm code.
2424 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2426 type_t *type = expression->type;
2428 /* beware: if expression is a variable reference, return the
2429 alignment of the variable. */
2430 const expression_t *tp_expression = expression->tp_expression;
2431 const declaration_t *declaration = expr_is_variable(tp_expression);
2432 if (declaration != NULL) {
2433 /* TODO: get the alignment of this variable. */
2435 type = tp_expression->base.type;
2436 assert(type != NULL);
2439 ir_mode *const mode = get_ir_mode(expression->base.type);
2440 symconst_symbol sym;
2441 sym.type_p = get_ir_type(type);
2442 return new_SymConst(mode, sym, symconst_type_align);
2445 static void init_ir_types(void);
2446 long fold_constant(const expression_t *expression)
2450 assert(is_constant_expression(expression));
2452 ir_graph *old_current_ir_graph = current_ir_graph;
2453 if(current_ir_graph == NULL) {
2454 current_ir_graph = get_const_code_irg();
2457 ir_node *cnst = expression_to_firm(expression);
2458 current_ir_graph = old_current_ir_graph;
2460 if(!is_Const(cnst)) {
2461 panic("couldn't fold constant\n");
2464 tarval *tv = get_Const_tarval(cnst);
2465 if(!tarval_is_long(tv)) {
2466 panic("result of constant folding is not integer\n");
2469 return get_tarval_long(tv);
2472 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2474 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2476 /* first try to fold a constant condition */
2477 if(is_constant_expression(expression->condition)) {
2478 long val = fold_constant(expression->condition);
2480 return expression_to_firm(expression->true_expression);
2482 return expression_to_firm(expression->false_expression);
2486 ir_node *cur_block = get_cur_block();
2488 /* create the true block */
2489 ir_node *true_block = new_immBlock();
2491 ir_node *true_val = expression_to_firm(expression->true_expression);
2492 ir_node *true_jmp = new_Jmp();
2494 /* create the false block */
2495 ir_node *false_block = new_immBlock();
2497 ir_node *false_val = expression_to_firm(expression->false_expression);
2498 ir_node *false_jmp = new_Jmp();
2500 /* create the condition evaluation */
2501 set_cur_block(cur_block);
2502 create_condition_evaluation(expression->condition, true_block, false_block);
2503 mature_immBlock(true_block);
2504 mature_immBlock(false_block);
2506 /* create the common block */
2507 ir_node *common_block = new_immBlock();
2508 add_immBlock_pred(common_block, true_jmp);
2509 add_immBlock_pred(common_block, false_jmp);
2510 mature_immBlock(common_block);
2512 /* TODO improve static semantics, so either both or no values are NULL */
2513 if (true_val == NULL || false_val == NULL)
2516 ir_node *in[2] = { true_val, false_val };
2517 ir_mode *mode = get_irn_mode(true_val);
2518 assert(get_irn_mode(false_val) == mode);
2519 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2524 static ir_node *select_addr(const select_expression_t *expression)
2526 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2528 ir_node *compound_addr = expression_to_firm(expression->compound);
2530 declaration_t *entry = expression->compound_entry;
2531 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2532 ir_entity *entity = entry->v.entity;
2534 assert(entity != NULL);
2536 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2541 static ir_node *select_to_firm(const select_expression_t *expression)
2543 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2544 ir_node *addr = select_addr(expression);
2545 type_t *type = revert_automatic_type_conversion(
2546 (const expression_t*) expression);
2547 type = skip_typeref(type);
2549 return deref_address(type, addr, dbgi);
2552 /* Values returned by __builtin_classify_type. */
2553 typedef enum gcc_type_class
2559 enumeral_type_class,
2562 reference_type_class,
2566 function_type_class,
2577 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2579 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2585 const atomic_type_t *const atomic_type = &type->atomic;
2586 switch (atomic_type->akind) {
2587 /* should not be reached */
2588 case ATOMIC_TYPE_INVALID:
2592 /* gcc cannot do that */
2593 case ATOMIC_TYPE_VOID:
2594 tc = void_type_class;
2597 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2598 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2599 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2600 case ATOMIC_TYPE_SHORT:
2601 case ATOMIC_TYPE_USHORT:
2602 case ATOMIC_TYPE_INT:
2603 case ATOMIC_TYPE_UINT:
2604 case ATOMIC_TYPE_LONG:
2605 case ATOMIC_TYPE_ULONG:
2606 case ATOMIC_TYPE_LONGLONG:
2607 case ATOMIC_TYPE_ULONGLONG:
2608 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2609 tc = integer_type_class;
2612 case ATOMIC_TYPE_FLOAT:
2613 case ATOMIC_TYPE_DOUBLE:
2614 case ATOMIC_TYPE_LONG_DOUBLE:
2615 tc = real_type_class;
2618 panic("Unexpected atomic type in classify_type_to_firm().");
2621 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2622 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2623 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2624 case TYPE_ARRAY: /* gcc handles this as pointer */
2625 case TYPE_FUNCTION: /* gcc handles this as pointer */
2626 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2627 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2628 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2630 /* gcc handles this as integer */
2631 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2634 /* typedef/typeof should be skipped already */
2641 panic("unexpected TYPE classify_type_to_firm().");
2644 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2645 ir_mode *const mode = mode_int;
2646 tarval *const tv = new_tarval_from_long(tc, mode);
2647 return new_d_Const(dbgi, mode, tv);
2650 static ir_node *function_name_to_firm(
2651 const funcname_expression_t *const expr)
2653 switch(expr->kind) {
2654 case FUNCNAME_FUNCTION:
2655 case FUNCNAME_PRETTY_FUNCTION:
2656 case FUNCNAME_FUNCDNAME:
2657 if (current_function_name == NULL) {
2658 const source_position_t *const src_pos = &expr->base.source_position;
2659 const char *const name = current_function_decl->symbol->string;
2660 const string_t string = { name, strlen(name) + 1 };
2661 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2663 return current_function_name;
2664 case FUNCNAME_FUNCSIG:
2665 if (current_funcsig == NULL) {
2666 const source_position_t *const src_pos = &expr->base.source_position;
2667 ir_entity *ent = get_irg_entity(current_ir_graph);
2668 const char *const name = get_entity_ld_name(ent);
2669 const string_t string = { name, strlen(name) + 1 };
2670 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2672 return current_funcsig;
2674 panic("Unsupported function name");
2677 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2679 statement_t *statement = expr->statement;
2681 assert(statement->kind == STATEMENT_COMPOUND);
2682 return compound_statement_to_firm(&statement->compound);
2685 static ir_node *va_start_expression_to_firm(
2686 const va_start_expression_t *const expr)
2688 ir_type *const method_type = get_ir_type(current_function_decl->type);
2689 int const n = get_method_n_params(method_type) - 1;
2690 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2691 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2692 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2693 ir_node *const no_mem = new_NoMem();
2694 ir_node *const arg_sel =
2695 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2697 ir_node *const cnst = get_type_size(expr->parameter->type);
2698 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2699 set_value_for_expression(expr->ap, add);
2704 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2706 type_t *const type = expr->base.type;
2707 ir_node *const ap = expression_to_firm(expr->ap);
2708 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2709 ir_node *const res = deref_address(type, ap, dbgi);
2711 ir_node *const cnst = get_type_size(expr->base.type);
2712 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2713 set_value_for_expression(expr->ap, add);
2718 static ir_node *dereference_addr(const unary_expression_t *const expression)
2720 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2721 return expression_to_firm(expression->value);
2724 static ir_node *expression_to_addr(const expression_t *expression)
2726 switch(expression->kind) {
2727 case EXPR_REFERENCE:
2728 return reference_addr(&expression->reference);
2729 case EXPR_ARRAY_ACCESS:
2730 return array_access_addr(&expression->array_access);
2732 return select_addr(&expression->select);
2734 return call_expression_to_firm(&expression->call);
2735 case EXPR_UNARY_DEREFERENCE: {
2736 return dereference_addr(&expression->unary);
2741 panic("trying to get address of non-lvalue");
2744 static ir_node *builtin_constant_to_firm(
2745 const builtin_constant_expression_t *expression)
2747 ir_mode *mode = get_ir_mode(expression->base.type);
2750 if (is_constant_expression(expression->value)) {
2755 return new_Const_long(mode, v);
2758 static ir_node *builtin_prefetch_to_firm(
2759 const builtin_prefetch_expression_t *expression)
2761 ir_node *adr = expression_to_firm(expression->adr);
2762 /* no Firm support for prefetch yet */
2767 static ir_node *_expression_to_firm(const expression_t *expression)
2769 switch(expression->kind) {
2770 case EXPR_CHARACTER_CONSTANT:
2771 return character_constant_to_firm(&expression->conste);
2772 case EXPR_WIDE_CHARACTER_CONSTANT:
2773 return wide_character_constant_to_firm(&expression->conste);
2775 return const_to_firm(&expression->conste);
2776 case EXPR_STRING_LITERAL:
2777 return string_literal_to_firm(&expression->string);
2778 case EXPR_WIDE_STRING_LITERAL:
2779 return wide_string_literal_to_firm(&expression->wide_string);
2780 case EXPR_REFERENCE:
2781 return reference_expression_to_firm(&expression->reference);
2783 return call_expression_to_firm(&expression->call);
2785 return unary_expression_to_firm(&expression->unary);
2787 return binary_expression_to_firm(&expression->binary);
2788 case EXPR_ARRAY_ACCESS:
2789 return array_access_to_firm(&expression->array_access);
2791 return sizeof_to_firm(&expression->typeprop);
2793 return alignof_to_firm(&expression->typeprop);
2794 case EXPR_CONDITIONAL:
2795 return conditional_to_firm(&expression->conditional);
2797 return select_to_firm(&expression->select);
2798 case EXPR_CLASSIFY_TYPE:
2799 return classify_type_to_firm(&expression->classify_type);
2801 return function_name_to_firm(&expression->funcname);
2802 case EXPR_STATEMENT:
2803 return statement_expression_to_firm(&expression->statement);
2805 return va_start_expression_to_firm(&expression->va_starte);
2807 return va_arg_expression_to_firm(&expression->va_arge);
2808 case EXPR_BUILTIN_SYMBOL:
2809 panic("unimplemented expression found");
2810 case EXPR_BUILTIN_CONSTANT_P:
2811 return builtin_constant_to_firm(&expression->builtin_constant);
2812 case EXPR_BUILTIN_PREFETCH:
2813 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2815 return offsetof_to_firm(&expression->offsetofe);
2816 case EXPR_COMPOUND_LITERAL:
2817 return compound_literal_to_firm(&expression->compound_literal);
2823 panic("invalid expression found");
2826 static ir_node *expression_to_firm(const expression_t *expression)
2828 ir_node *res = _expression_to_firm(expression);
2830 if(res != NULL && get_irn_mode(res) == mode_b) {
2831 ir_mode *mode = get_ir_mode(expression->base.type);
2833 if(is_Const_null(res)) {
2834 return new_Const_long(mode, 0);
2836 assert(is_Const_one(res));
2837 return new_Const_long(mode, 1);
2841 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2842 return produce_condition_result(expression, dbgi);
2848 static ir_node *expression_to_modeb(const expression_t *expression)
2850 ir_node *res = _expression_to_firm(expression);
2851 res = create_conv(NULL, res, mode_b);
2857 * create a short-circuit expression evaluation that tries to construct
2858 * efficient control flow structures for &&, || and ! expressions
2860 static void create_condition_evaluation(const expression_t *expression,
2861 ir_node *true_block,
2862 ir_node *false_block)
2864 switch(expression->kind) {
2865 case EXPR_UNARY_NOT: {
2866 const unary_expression_t *unary_expression = &expression->unary;
2867 create_condition_evaluation(unary_expression->value, false_block,
2871 case EXPR_BINARY_LOGICAL_AND: {
2872 const binary_expression_t *binary_expression = &expression->binary;
2874 ir_node *cur_block = get_cur_block();
2875 ir_node *extra_block = new_immBlock();
2876 set_cur_block(cur_block);
2877 create_condition_evaluation(binary_expression->left, extra_block,
2879 mature_immBlock(extra_block);
2880 set_cur_block(extra_block);
2881 create_condition_evaluation(binary_expression->right, true_block,
2885 case EXPR_BINARY_LOGICAL_OR: {
2886 const binary_expression_t *binary_expression = &expression->binary;
2888 ir_node *cur_block = get_cur_block();
2889 ir_node *extra_block = new_immBlock();
2890 set_cur_block(cur_block);
2891 create_condition_evaluation(binary_expression->left, true_block,
2893 mature_immBlock(extra_block);
2894 set_cur_block(extra_block);
2895 create_condition_evaluation(binary_expression->right, true_block,
2903 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2904 ir_node *condition = expression_to_modeb(expression);
2905 ir_node *cond = new_d_Cond(dbgi, condition);
2906 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2907 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2909 /* set branch prediction info based on __builtin_expect */
2910 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2911 long cnst = fold_constant(expression->binary.right);
2912 cond_jmp_predicate pred;
2915 pred = COND_JMP_PRED_FALSE;
2917 pred = COND_JMP_PRED_TRUE;
2919 set_Cond_jmp_pred(cond, pred);
2922 add_immBlock_pred(true_block, true_proj);
2923 add_immBlock_pred(false_block, false_proj);
2925 set_cur_block(NULL);
2930 static void create_declaration_entity(declaration_t *declaration,
2931 declaration_kind_t declaration_kind,
2932 ir_type *parent_type)
2934 ident *const id = new_id_from_str(declaration->symbol->string);
2935 type_t *const type = skip_typeref(declaration->type);
2936 ir_type *const irtype = get_ir_type(type);
2937 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2938 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2940 declaration->declaration_kind = (unsigned char) declaration_kind;
2941 declaration->v.entity = entity;
2942 set_entity_variability(entity, variability_uninitialized);
2943 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
2944 if(parent_type == get_tls_type())
2945 set_entity_allocation(entity, allocation_automatic);
2946 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2947 set_entity_allocation(entity, allocation_static);
2949 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2950 set_entity_volatility(entity, volatility_is_volatile);
2955 typedef struct type_path_entry_t type_path_entry_t;
2956 struct type_path_entry_t {
2958 ir_initializer_t *initializer;
2960 declaration_t *compound_entry;
2963 typedef struct type_path_t type_path_t;
2964 struct type_path_t {
2965 type_path_entry_t *path;
2970 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2972 size_t len = ARR_LEN(path->path);
2974 for(size_t i = 0; i < len; ++i) {
2975 const type_path_entry_t *entry = & path->path[i];
2977 type_t *type = skip_typeref(entry->type);
2978 if(is_type_compound(type)) {
2979 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2980 } else if(is_type_array(type)) {
2981 fprintf(stderr, "[%zd]", entry->index);
2983 fprintf(stderr, "-INVALID-");
2986 fprintf(stderr, " (");
2987 print_type(path->top_type);
2988 fprintf(stderr, ")");
2991 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2993 size_t len = ARR_LEN(path->path);
2995 return & path->path[len-1];
2998 static type_path_entry_t *append_to_type_path(type_path_t *path)
3000 size_t len = ARR_LEN(path->path);
3001 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3003 type_path_entry_t *result = & path->path[len];
3004 memset(result, 0, sizeof(result[0]));
3008 static size_t get_compound_size(const compound_type_t *type)
3010 declaration_t *declaration = type->declaration;
3011 declaration_t *member = declaration->scope.declarations;
3013 for( ; member != NULL; member = member->next) {
3016 /* TODO: cache results? */
3021 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3023 type_t *orig_top_type = path->top_type;
3024 type_t *top_type = skip_typeref(orig_top_type);
3026 assert(is_type_compound(top_type) || is_type_array(top_type));
3028 if(ARR_LEN(path->path) == 0) {
3031 type_path_entry_t *top = get_type_path_top(path);
3032 ir_initializer_t *initializer = top->initializer;
3033 return get_initializer_compound_value(initializer, top->index);
3037 static void descend_into_subtype(type_path_t *path)
3039 type_t *orig_top_type = path->top_type;
3040 type_t *top_type = skip_typeref(orig_top_type);
3042 assert(is_type_compound(top_type) || is_type_array(top_type));
3044 ir_initializer_t *initializer = get_initializer_entry(path);
3046 type_path_entry_t *top = append_to_type_path(path);
3047 top->type = top_type;
3051 if(is_type_compound(top_type)) {
3052 declaration_t *declaration = top_type->compound.declaration;
3053 declaration_t *entry = declaration->scope.declarations;
3055 top->compound_entry = entry;
3057 len = get_compound_size(&top_type->compound);
3059 path->top_type = entry->type;
3061 assert(is_type_array(top_type));
3062 assert(top_type->array.size > 0);
3065 path->top_type = top_type->array.element_type;
3066 len = top_type->array.size;
3068 if(initializer == NULL
3069 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3070 initializer = create_initializer_compound(len);
3071 /* we have to set the entry at the 2nd latest path entry... */
3072 size_t path_len = ARR_LEN(path->path);
3073 assert(path_len >= 1);
3075 type_path_entry_t *entry = & path->path[path_len-2];
3076 ir_initializer_t *tinitializer = entry->initializer;
3077 set_initializer_compound_value(tinitializer, entry->index,
3081 top->initializer = initializer;
3084 static void ascend_from_subtype(type_path_t *path)
3086 type_path_entry_t *top = get_type_path_top(path);
3088 path->top_type = top->type;
3090 size_t len = ARR_LEN(path->path);
3091 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3094 static void walk_designator(type_path_t *path, const designator_t *designator)
3096 /* designators start at current object type */
3097 ARR_RESIZE(type_path_entry_t, path->path, 1);
3099 for( ; designator != NULL; designator = designator->next) {
3100 type_path_entry_t *top = get_type_path_top(path);
3101 type_t *orig_type = top->type;
3102 type_t *type = skip_typeref(orig_type);
3104 if(designator->symbol != NULL) {
3105 assert(is_type_compound(type));
3107 symbol_t *symbol = designator->symbol;
3109 declaration_t *declaration = type->compound.declaration;
3110 declaration_t *iter = declaration->scope.declarations;
3111 for( ; iter != NULL; iter = iter->next, ++index) {
3112 if(iter->symbol == symbol) {
3116 assert(iter != NULL);
3118 top->type = orig_type;
3119 top->compound_entry = iter;
3121 orig_type = iter->type;
3123 expression_t *array_index = designator->array_index;
3124 assert(designator->array_index != NULL);
3125 assert(is_type_array(type));
3126 assert(is_type_valid(array_index->base.type));
3128 long index = fold_constant(array_index);
3131 if(type->array.size_constant == 1) {
3132 long array_size = type->array.size;
3133 assert(index < array_size);
3137 top->type = orig_type;
3138 top->index = (size_t) index;
3139 orig_type = type->array.element_type;
3141 path->top_type = orig_type;
3143 if(designator->next != NULL) {
3144 descend_into_subtype(path);
3148 path->invalid = false;
3151 static void advance_current_object(type_path_t *path)
3154 /* TODO: handle this... */
3155 panic("invalid initializer in ast2firm (excessive elements)");
3159 type_path_entry_t *top = get_type_path_top(path);
3161 type_t *type = skip_typeref(top->type);
3162 if(is_type_union(type)) {
3163 top->compound_entry = NULL;
3164 } else if(is_type_struct(type)) {
3165 declaration_t *entry = top->compound_entry;
3168 entry = entry->next;
3169 top->compound_entry = entry;
3171 path->top_type = entry->type;
3175 assert(is_type_array(type));
3178 if(!type->array.size_constant || top->index < type->array.size) {
3183 /* we're past the last member of the current sub-aggregate, try if we
3184 * can ascend in the type hierarchy and continue with another subobject */
3185 size_t len = ARR_LEN(path->path);
3188 ascend_from_subtype(path);
3189 advance_current_object(path);
3191 path->invalid = true;
3196 static ir_initializer_t *create_ir_initializer(
3197 const initializer_t *initializer, type_t *type);
3199 static ir_initializer_t *create_ir_initializer_value(
3200 const initializer_value_t *initializer)
3202 ir_node *value = expression_to_firm(initializer->value);
3203 return create_initializer_const(value);
3206 static ir_initializer_t *create_ir_initializer_list(
3207 const initializer_list_t *initializer, type_t *type)
3210 memset(&path, 0, sizeof(path));
3211 path.top_type = type;
3212 path.path = NEW_ARR_F(type_path_entry_t, 0);
3214 descend_into_subtype(&path);
3216 for(size_t i = 0; i < initializer->len; ++i) {
3217 const initializer_t *sub_initializer = initializer->initializers[i];
3219 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3220 walk_designator(&path, sub_initializer->designator.designator);
3224 if(sub_initializer->kind == INITIALIZER_VALUE) {
3225 /* we might have to descend into types until we're at a scalar
3228 type_t *orig_top_type = path.top_type;
3229 type_t *top_type = skip_typeref(orig_top_type);
3231 if(is_type_scalar(top_type))
3233 descend_into_subtype(&path);
3237 ir_initializer_t *sub_irinitializer
3238 = create_ir_initializer(sub_initializer, path.top_type);
3240 size_t path_len = ARR_LEN(path.path);
3241 assert(path_len >= 1);
3242 type_path_entry_t *entry = & path.path[path_len-1];
3243 ir_initializer_t *tinitializer = entry->initializer;
3244 set_initializer_compound_value(tinitializer, entry->index,
3247 advance_current_object(&path);
3250 assert(ARR_LEN(path.path) >= 1);
3251 ir_initializer_t *result = path.path[0].initializer;
3252 DEL_ARR_F(path.path);
3257 static ir_initializer_t *create_ir_initializer_string(
3258 const initializer_string_t *initializer, type_t *type)
3260 type = skip_typeref(type);
3262 size_t string_len = initializer->string.size;
3263 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3264 size_t len = type->array.size;
3265 ir_initializer_t *irinitializer = create_initializer_compound(len);
3267 const char *string = initializer->string.begin;
3268 ir_mode *mode = get_type_mode(ir_type_const_char);
3270 for(size_t i = 0; i < len; ++i) {
3275 tarval *tv = new_tarval_from_long(c, mode);
3276 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3278 set_initializer_compound_value(irinitializer, i, char_initializer);
3281 return irinitializer;
3284 static ir_initializer_t *create_ir_initializer_wide_string(
3285 const initializer_wide_string_t *initializer, type_t *type)
3287 size_t string_len = initializer->string.size;
3288 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3289 size_t len = type->array.size;
3290 ir_initializer_t *irinitializer = create_initializer_compound(len);
3292 const wchar_rep_t *string = initializer->string.begin;
3293 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3295 for(size_t i = 0; i < len; ++i) {
3297 if(i < string_len) {
3300 tarval *tv = new_tarval_from_long(c, mode);
3301 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3303 set_initializer_compound_value(irinitializer, i, char_initializer);
3306 return irinitializer;
3309 static ir_initializer_t *create_ir_initializer(
3310 const initializer_t *initializer, type_t *type)
3312 switch(initializer->kind) {
3313 case INITIALIZER_STRING:
3314 return create_ir_initializer_string(&initializer->string, type);
3316 case INITIALIZER_WIDE_STRING:
3317 return create_ir_initializer_wide_string(&initializer->wide_string,
3320 case INITIALIZER_LIST:
3321 return create_ir_initializer_list(&initializer->list, type);
3323 case INITIALIZER_VALUE:
3324 return create_ir_initializer_value(&initializer->value);
3326 case INITIALIZER_DESIGNATOR:
3327 panic("unexpected designator initializer found");
3329 panic("unknown initializer");
3332 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3335 if (is_atomic_type(type)) {
3336 ir_mode *mode = get_type_mode(type);
3337 tarval *zero = get_mode_null(mode);
3338 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3340 /* TODO: bitfields */
3341 ir_node *mem = get_store();
3342 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3343 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3346 assert(is_compound_type(type));
3349 if(is_Array_type(type)) {
3350 assert(has_array_upper_bound(type, 0));
3351 n_members = get_array_upper_bound_int(type, 0);
3353 n_members = get_compound_n_members(type);
3356 for(int i = 0; i < n_members; ++i) {
3359 if(is_Array_type(type)) {
3360 ir_entity *entity = get_array_element_entity(type);
3361 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3362 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3363 ir_node *in[1] = { cnst };
3364 irtype = get_array_element_type(type);
3365 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3367 ir_entity *member = get_compound_member(type, i);
3369 irtype = get_entity_type(member);
3370 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3373 create_dynamic_null_initializer(irtype, dbgi, addr);
3378 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3379 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3381 switch(get_initializer_kind(initializer)) {
3382 case IR_INITIALIZER_NULL: {
3383 create_dynamic_null_initializer(type, dbgi, base_addr);
3386 case IR_INITIALIZER_CONST: {
3387 ir_node *node = get_initializer_const_value(initializer);
3388 ir_mode *mode = get_irn_mode(node);
3389 assert(get_type_mode(type) == mode);
3391 /* TODO: bitfields... */
3392 ir_node *mem = get_store();
3393 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3394 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3398 case IR_INITIALIZER_TARVAL: {
3399 tarval *tv = get_initializer_tarval_value(initializer);
3400 ir_mode *mode = get_tarval_mode(tv);
3401 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3402 assert(get_type_mode(type) == mode);
3404 /* TODO: bitfields... */
3405 ir_node *mem = get_store();
3406 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3407 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3411 case IR_INITIALIZER_COMPOUND: {
3412 assert(is_compound_type(type));
3414 if(is_Array_type(type)) {
3415 assert(has_array_upper_bound(type, 0));
3416 n_members = get_array_upper_bound_int(type, 0);
3418 n_members = get_compound_n_members(type);
3421 if(get_initializer_compound_n_entries(initializer)
3422 != (unsigned) n_members)
3423 panic("initializer doesn't match compound type");
3425 for(int i = 0; i < n_members; ++i) {
3428 if(is_Array_type(type)) {
3429 ir_entity *entity = get_array_element_entity(type);
3430 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3431 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3432 ir_node *in[1] = { cnst };
3433 irtype = get_array_element_type(type);
3434 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3436 ir_entity *member = get_compound_member(type, i);
3438 irtype = get_entity_type(member);
3439 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3442 ir_initializer_t *sub_init
3443 = get_initializer_compound_value(initializer, i);
3445 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3451 panic("invalid IR_INITIALIZER found");
3454 static void create_dynamic_initializer(ir_initializer_t *initializer,
3455 dbg_info *dbgi, ir_entity *entity)
3457 ir_node *frame = get_local_frame(entity);
3458 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3459 ir_type *type = get_entity_type(entity);
3461 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3464 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3465 ir_entity *entity, type_t *type)
3467 ir_node *memory = get_store();
3468 ir_node *nomem = new_NoMem();
3469 ir_node *frame = get_irg_frame(current_ir_graph);
3470 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3472 if(initializer->kind == INITIALIZER_VALUE) {
3473 initializer_value_t *initializer_value = &initializer->value;
3475 ir_node *value = expression_to_firm(initializer_value->value);
3476 type = skip_typeref(type);
3477 assign_value(dbgi, addr, type, value);
3481 if(!is_constant_initializer(initializer)) {
3482 ir_initializer_t *irinitializer
3483 = create_ir_initializer(initializer, type);
3485 create_dynamic_initializer(irinitializer, dbgi, entity);
3489 /* create the ir_initializer */
3490 ir_graph *const old_current_ir_graph = current_ir_graph;
3491 current_ir_graph = get_const_code_irg();
3493 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3495 assert(current_ir_graph == get_const_code_irg());
3496 current_ir_graph = old_current_ir_graph;
3498 /* create a "template" entity which is copied to the entity on the stack */
3499 ident *const id = id_unique("initializer.%u");
3500 ir_type *const irtype = get_ir_type(type);
3501 ir_type *const global_type = get_glob_type();
3502 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3503 set_entity_ld_ident(init_entity, id);
3505 set_entity_variability(init_entity, variability_initialized);
3506 set_entity_visibility(init_entity, visibility_local);
3507 set_entity_allocation(init_entity, allocation_static);
3509 set_entity_initializer(init_entity, irinitializer);
3511 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3512 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3514 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3515 set_store(copyb_mem);
3518 static void create_initializer_local_variable_entity(declaration_t *declaration)
3520 initializer_t *initializer = declaration->init.initializer;
3521 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3522 ir_entity *entity = declaration->v.entity;
3523 type_t *type = declaration->type;
3524 create_local_initializer(initializer, dbgi, entity, type);
3527 static void create_declaration_initializer(declaration_t *declaration)
3529 initializer_t *initializer = declaration->init.initializer;
3530 if(initializer == NULL)
3533 declaration_kind_t declaration_kind
3534 = (declaration_kind_t) declaration->declaration_kind;
3535 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3536 create_initializer_local_variable_entity(declaration);
3540 if(initializer->kind == INITIALIZER_VALUE) {
3541 initializer_value_t *initializer_value = &initializer->value;
3543 ir_node *value = expression_to_firm(initializer_value->value);
3545 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3546 set_value(declaration->v.value_number, value);
3548 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3550 ir_entity *entity = declaration->v.entity;
3552 set_entity_variability(entity, variability_initialized);
3553 set_atomic_ent_value(entity, value);
3556 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3557 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3559 ir_entity *entity = declaration->v.entity;
3560 ir_initializer_t *irinitializer
3561 = create_ir_initializer(initializer, declaration->type);
3563 set_entity_variability(entity, variability_initialized);
3564 set_entity_initializer(entity, irinitializer);
3568 static void create_variable_length_array(declaration_t *declaration)
3570 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3571 type_t *type = declaration->type;
3572 ir_node *mem = get_store();
3573 ir_type *el_type = get_ir_type(type->array.element_type);
3575 /* make sure size_node is calculated */
3576 get_type_size(type);
3577 ir_node *elems = type->array.size_node;
3578 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3580 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3581 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3584 /* initializers are not allowed for VLAs */
3585 assert(declaration->init.initializer == NULL);
3587 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3588 declaration->v.vla_base = addr;
3590 /* TODO: record VLA somewhere so we create the free node when we leave
3595 * Creates a Firm local variable from a declaration.
3597 static void create_local_variable(declaration_t *declaration)
3599 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3601 bool needs_entity = declaration->address_taken;
3602 type_t *type = skip_typeref(declaration->type);
3604 /* is it a variable length array? */
3605 if(is_type_array(type) && !type->array.size_constant) {
3606 create_variable_length_array(declaration);
3608 } else if(is_type_array(type) || is_type_compound(type)) {
3609 needs_entity = true;
3610 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3611 needs_entity = true;
3615 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3616 create_declaration_entity(declaration,
3617 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3620 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3621 declaration->v.value_number = next_value_number_function;
3622 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3623 ++next_value_number_function;
3626 create_declaration_initializer(declaration);
3629 static void create_local_static_variable(declaration_t *declaration)
3631 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3633 type_t *const type = skip_typeref(declaration->type);
3634 ir_type *const global_type = get_glob_type();
3635 ident *const id = new_id_from_str(declaration->symbol->string);
3636 ir_type *const irtype = get_ir_type(type);
3637 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3638 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3640 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3641 set_entity_volatility(entity, volatility_is_volatile);
3644 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3645 declaration->v.entity = entity;
3646 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3647 set_entity_variability(entity, variability_uninitialized);
3648 set_entity_visibility(entity, visibility_local);
3649 set_entity_allocation(entity, allocation_static);
3651 ir_graph *const old_current_ir_graph = current_ir_graph;
3652 current_ir_graph = get_const_code_irg();
3654 create_declaration_initializer(declaration);
3656 assert(current_ir_graph == get_const_code_irg());
3657 current_ir_graph = old_current_ir_graph;
3662 static void return_statement_to_firm(return_statement_t *statement)
3664 if(get_cur_block() == NULL)
3667 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3668 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3673 if(get_method_n_ress(func_irtype) > 0) {
3674 ir_type *res_type = get_method_res_type(func_irtype, 0);
3676 if(statement->value != NULL) {
3677 ir_node *node = expression_to_firm(statement->value);
3678 node = do_strict_conv(dbgi, node);
3682 if(is_compound_type(res_type)) {
3685 mode = get_type_mode(res_type);
3687 in[0] = new_Unknown(mode);
3691 /* build return_value for its side effects */
3692 if(statement->value != NULL) {
3693 expression_to_firm(statement->value);
3698 ir_node *store = get_store();
3699 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3701 ir_node *end_block = get_irg_end_block(current_ir_graph);
3702 add_immBlock_pred(end_block, ret);
3704 set_cur_block(NULL);
3707 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3709 if(get_cur_block() == NULL)
3712 return expression_to_firm(statement->expression);
3715 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3717 ir_node *result = NULL;
3718 statement_t *statement = compound->statements;
3719 for( ; statement != NULL; statement = statement->base.next) {
3720 //context2firm(&statement->scope);
3722 if(statement->base.next == NULL
3723 && statement->kind == STATEMENT_EXPRESSION) {
3724 result = expression_statement_to_firm(
3725 &statement->expression);
3728 statement_to_firm(statement);
3734 static void create_global_variable(declaration_t *declaration)
3738 switch ((storage_class_tag_t)declaration->storage_class) {
3739 case STORAGE_CLASS_STATIC:
3740 vis = visibility_local;
3743 case STORAGE_CLASS_EXTERN:
3744 vis = visibility_external_allocated;
3747 case STORAGE_CLASS_NONE:
3748 vis = visibility_external_visible;
3751 case STORAGE_CLASS_THREAD:
3752 vis = visibility_external_visible;
3755 case STORAGE_CLASS_THREAD_EXTERN:
3756 vis = visibility_external_allocated;
3759 case STORAGE_CLASS_THREAD_STATIC:
3760 vis = visibility_local;
3764 var_type = get_tls_type();
3768 var_type = get_glob_type();
3772 create_declaration_entity(declaration,
3773 DECLARATION_KIND_GLOBAL_VARIABLE,
3775 set_entity_visibility(declaration->v.entity, vis);
3779 case STORAGE_CLASS_TYPEDEF:
3780 case STORAGE_CLASS_AUTO:
3781 case STORAGE_CLASS_REGISTER:
3782 case STORAGE_CLASS_ENUM_ENTRY:
3785 panic("Invalid storage class for global variable");
3788 static void create_local_declaration(declaration_t *declaration)
3790 if(declaration->symbol == NULL)
3793 type_t *type = skip_typeref(declaration->type);
3795 switch ((storage_class_tag_t) declaration->storage_class) {
3796 case STORAGE_CLASS_STATIC:
3797 create_local_static_variable(declaration);
3799 case STORAGE_CLASS_EXTERN:
3800 create_global_variable(declaration);
3801 create_declaration_initializer(declaration);
3803 case STORAGE_CLASS_NONE:
3804 case STORAGE_CLASS_AUTO:
3805 case STORAGE_CLASS_REGISTER:
3806 if(is_type_function(type)) {
3807 if(declaration->init.statement != NULL) {
3808 panic("nested functions not supported yet");
3810 get_function_entity(declaration);
3813 create_local_variable(declaration);
3816 case STORAGE_CLASS_ENUM_ENTRY:
3817 case STORAGE_CLASS_TYPEDEF:
3818 case STORAGE_CLASS_THREAD:
3819 case STORAGE_CLASS_THREAD_EXTERN:
3820 case STORAGE_CLASS_THREAD_STATIC:
3823 panic("invalid storage class found");
3826 static void declaration_statement_to_firm(declaration_statement_t *statement)
3828 declaration_t *declaration = statement->declarations_begin;
3829 declaration_t *end = statement->declarations_end->next;
3830 for( ; declaration != end; declaration = declaration->next) {
3831 if(declaration->namespc != NAMESPACE_NORMAL)
3833 create_local_declaration(declaration);
3837 static void if_statement_to_firm(if_statement_t *statement)
3839 ir_node *cur_block = get_cur_block();
3841 ir_node *fallthrough_block = new_immBlock();
3843 /* the true (blocks) */
3844 ir_node *true_block;
3845 if (statement->true_statement != NULL) {
3846 true_block = new_immBlock();
3847 statement_to_firm(statement->true_statement);
3848 if(get_cur_block() != NULL) {
3849 ir_node *jmp = new_Jmp();
3850 add_immBlock_pred(fallthrough_block, jmp);
3853 true_block = fallthrough_block;
3856 /* the false (blocks) */
3857 ir_node *false_block;
3858 if(statement->false_statement != NULL) {
3859 false_block = new_immBlock();
3861 statement_to_firm(statement->false_statement);
3862 if(get_cur_block() != NULL) {
3863 ir_node *jmp = new_Jmp();
3864 add_immBlock_pred(fallthrough_block, jmp);
3867 false_block = fallthrough_block;
3870 /* create the condition */
3871 if(cur_block != NULL) {
3872 set_cur_block(cur_block);
3873 create_condition_evaluation(statement->condition, true_block,
3877 mature_immBlock(true_block);
3878 if(false_block != fallthrough_block) {
3879 mature_immBlock(false_block);
3881 mature_immBlock(fallthrough_block);
3883 set_cur_block(fallthrough_block);
3886 static void while_statement_to_firm(while_statement_t *statement)
3888 ir_node *jmp = NULL;
3889 if(get_cur_block() != NULL) {
3893 /* create the header block */
3894 ir_node *header_block = new_immBlock();
3896 add_immBlock_pred(header_block, jmp);
3899 /* the false block */
3900 ir_node *false_block = new_immBlock();
3903 ir_node *body_block;
3904 if (statement->body != NULL) {
3905 ir_node *old_continue_label = continue_label;
3906 ir_node *old_break_label = break_label;
3907 continue_label = header_block;
3908 break_label = false_block;
3910 body_block = new_immBlock();
3911 statement_to_firm(statement->body);
3913 assert(continue_label == header_block);
3914 assert(break_label == false_block);
3915 continue_label = old_continue_label;
3916 break_label = old_break_label;
3918 if(get_cur_block() != NULL) {
3920 add_immBlock_pred(header_block, jmp);
3923 body_block = header_block;
3926 /* create the condition */
3927 set_cur_block(header_block);
3929 create_condition_evaluation(statement->condition, body_block, false_block);
3930 mature_immBlock(body_block);
3931 mature_immBlock(false_block);
3932 mature_immBlock(header_block);
3934 set_cur_block(false_block);
3937 static void do_while_statement_to_firm(do_while_statement_t *statement)
3939 ir_node *jmp = NULL;
3940 if(get_cur_block() != NULL) {
3944 /* create the header block */
3945 ir_node *header_block = new_immBlock();
3947 /* the false block */
3948 ir_node *false_block = new_immBlock();
3951 ir_node *body_block = new_immBlock();
3953 add_immBlock_pred(body_block, jmp);
3956 if (statement->body != NULL) {
3957 ir_node *old_continue_label = continue_label;
3958 ir_node *old_break_label = break_label;
3959 continue_label = header_block;
3960 break_label = false_block;
3962 statement_to_firm(statement->body);
3964 assert(continue_label == header_block);
3965 assert(break_label == false_block);
3966 continue_label = old_continue_label;
3967 break_label = old_break_label;
3969 if (get_cur_block() == NULL) {
3970 mature_immBlock(header_block);
3971 mature_immBlock(body_block);
3972 mature_immBlock(false_block);
3977 ir_node *body_jmp = new_Jmp();
3978 add_immBlock_pred(header_block, body_jmp);
3979 mature_immBlock(header_block);
3981 /* create the condition */
3982 set_cur_block(header_block);
3984 create_condition_evaluation(statement->condition, body_block, false_block);
3985 mature_immBlock(body_block);
3986 mature_immBlock(false_block);
3987 mature_immBlock(header_block);
3989 set_cur_block(false_block);
3992 static void for_statement_to_firm(for_statement_t *statement)
3994 ir_node *jmp = NULL;
3995 if (get_cur_block() != NULL) {
3996 if(statement->initialisation != NULL) {
3997 expression_to_firm(statement->initialisation);
4000 /* create declarations */
4001 declaration_t *declaration = statement->scope.declarations;
4002 for( ; declaration != NULL; declaration = declaration->next) {
4003 create_local_declaration(declaration);
4010 /* create the step block */
4011 ir_node *const step_block = new_immBlock();
4012 if (statement->step != NULL) {
4013 expression_to_firm(statement->step);
4015 ir_node *const step_jmp = new_Jmp();
4017 /* create the header block */
4018 ir_node *const header_block = new_immBlock();
4020 add_immBlock_pred(header_block, jmp);
4022 add_immBlock_pred(header_block, step_jmp);
4024 /* the false block */
4025 ir_node *const false_block = new_immBlock();
4028 ir_node * body_block;
4029 if (statement->body != NULL) {
4030 ir_node *const old_continue_label = continue_label;
4031 ir_node *const old_break_label = break_label;
4032 continue_label = step_block;
4033 break_label = false_block;
4035 body_block = new_immBlock();
4036 statement_to_firm(statement->body);
4038 assert(continue_label == step_block);
4039 assert(break_label == false_block);
4040 continue_label = old_continue_label;
4041 break_label = old_break_label;
4043 if (get_cur_block() != NULL) {
4045 add_immBlock_pred(step_block, jmp);
4048 body_block = step_block;
4051 /* create the condition */
4052 set_cur_block(header_block);
4053 if (statement->condition != NULL) {
4054 create_condition_evaluation(statement->condition, body_block,
4057 keep_alive(header_block);
4059 add_immBlock_pred(body_block, jmp);
4062 mature_immBlock(body_block);
4063 mature_immBlock(false_block);
4064 mature_immBlock(step_block);
4065 mature_immBlock(header_block);
4066 mature_immBlock(false_block);
4068 set_cur_block(false_block);
4071 static void create_jump_statement(const statement_t *statement,
4072 ir_node *target_block)
4074 if(get_cur_block() == NULL)
4077 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4078 ir_node *jump = new_d_Jmp(dbgi);
4079 add_immBlock_pred(target_block, jump);
4081 set_cur_block(NULL);
4084 static void switch_statement_to_firm(const switch_statement_t *statement)
4086 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4088 ir_node *expression = expression_to_firm(statement->expression);
4089 ir_node *cond = new_d_Cond(dbgi, expression);
4090 ir_node *break_block = new_immBlock();
4092 set_cur_block(NULL);
4094 ir_node *const old_switch_cond = current_switch_cond;
4095 ir_node *const old_break_label = break_label;
4096 const bool old_saw_default_label = saw_default_label;
4097 current_switch_cond = cond;
4098 break_label = break_block;
4100 if (statement->body != NULL) {
4101 statement_to_firm(statement->body);
4104 if(get_cur_block() != NULL) {
4105 ir_node *jmp = new_Jmp();
4106 add_immBlock_pred(break_block, jmp);
4109 if (!saw_default_label) {
4110 set_cur_block(get_nodes_block(cond));
4111 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4112 MAGIC_DEFAULT_PN_NUMBER);
4113 add_immBlock_pred(break_block, proj);
4116 assert(current_switch_cond == cond);
4117 assert(break_label == break_block);
4118 current_switch_cond = old_switch_cond;
4119 break_label = old_break_label;
4120 saw_default_label = old_saw_default_label;
4122 mature_immBlock(break_block);
4123 set_cur_block(break_block);
4126 static void case_label_to_firm(const case_label_statement_t *statement)
4128 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4130 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4132 /* let's create a node and hope firm constant folding creates a Const
4135 ir_node *old_block = get_nodes_block(current_switch_cond);
4136 ir_node *block = new_immBlock();
4138 set_cur_block(old_block);
4139 if(statement->expression != NULL) {
4140 long start_pn = fold_constant(statement->expression);
4141 long end_pn = start_pn;
4142 if (statement->end_range != NULL) {
4143 end_pn = fold_constant(statement->end_range);
4145 assert(start_pn <= end_pn);
4146 /* create jumps for all cases in the given range */
4147 for (long pn = start_pn; pn <= end_pn; ++pn) {
4148 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4149 /* oops someone detected our cheating... */
4150 panic("magic default pn used");
4152 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4153 add_immBlock_pred(block, proj);
4156 saw_default_label = true;
4157 proj = new_d_defaultProj(dbgi, current_switch_cond,
4158 MAGIC_DEFAULT_PN_NUMBER);
4160 add_immBlock_pred(block, proj);
4163 if (fallthrough != NULL) {
4164 add_immBlock_pred(block, fallthrough);
4166 mature_immBlock(block);
4167 set_cur_block(block);
4169 if(statement->statement != NULL) {
4170 statement_to_firm(statement->statement);
4174 static ir_node *get_label_block(declaration_t *label)
4176 assert(label->namespc == NAMESPACE_LABEL);
4178 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4179 return label->v.block;
4181 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4183 ir_node *old_cur_block = get_cur_block();
4184 ir_node *block = new_immBlock();
4185 set_cur_block(old_cur_block);
4187 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4188 label->v.block = block;
4190 ARR_APP1(ir_node *, imature_blocks, block);
4195 static void label_to_firm(const label_statement_t *statement)
4197 ir_node *block = get_label_block(statement->label);
4199 if(get_cur_block() != NULL) {
4200 ir_node *jmp = new_Jmp();
4201 add_immBlock_pred(block, jmp);
4204 set_cur_block(block);
4207 if(statement->statement != NULL) {
4208 statement_to_firm(statement->statement);
4212 static void goto_to_firm(const goto_statement_t *statement)
4214 if(get_cur_block() == NULL)
4217 ir_node *block = get_label_block(statement->label);
4218 ir_node *jmp = new_Jmp();
4219 add_immBlock_pred(block, jmp);
4221 set_cur_block(NULL);
4224 typedef enum modifier_t {
4225 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4226 ASM_MODIFIER_READ_WRITE = 1 << 1,
4227 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4228 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4231 static void asm_statement_to_firm(const asm_statement_t *statement)
4234 fprintf(stderr, "WARNING asm not implemented yet!\n");
4236 bool needs_memory = false;
4238 size_t n_clobbers = 0;
4239 asm_clobber_t *clobber = statement->clobbers;
4240 for( ; clobber != NULL; clobber = clobber->next) {
4241 if(strcmp(clobber->clobber, "memory") == 0) {
4242 needs_memory = true;
4246 ident *id = new_id_from_str(clobber->clobber);
4247 obstack_ptr_grow(&asm_obst, id);
4250 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4251 ident **clobbers = NULL;
4252 if(n_clobbers > 0) {
4253 clobbers = obstack_finish(&asm_obst);
4256 /* find and count input and output constraints */
4257 asm_constraint_t *constraint = statement->inputs;
4258 for( ; constraint != NULL; constraint = constraint->next) {
4260 bool supports_memop = false;
4261 for(const char *c = constraint->constraints; *c != 0; ++c) {
4262 /* TODO: improve error messages */
4266 panic("multiple alternative assembler constraints not "
4274 supports_memop = true;
4275 obstack_1grow(&asm_obst, *c);
4278 if(modifiers & ASM_MODIFIER_READ_WRITE)
4279 panic("inconsistent register constraints");
4280 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4283 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4284 panic("inconsistent register constraints");
4285 modifiers |= ASM_MODIFIER_READ_WRITE;
4288 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4289 panic("early clobber assembler constraint not supported yet");
4292 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4293 panic("commutative assembler constraint not supported yet");
4296 /* skip register preferences stuff... */
4297 while(*c != 0 && *c != ',')
4301 /* skip register preferences stuff... */
4305 obstack_1grow(&asm_obst, *c);
4309 obstack_1grow(&asm_obst, '\0');
4310 const char *constraint_string = obstack_finish(&asm_obst);
4312 needs_memory |= supports_memop;
4313 if(supports_memop) {
4320 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4321 statement_to_firm(statement->try_statement);
4322 warningf(&statement->base.source_position, "structured exception handling ignored");
4325 static void leave_statement_to_firm(leave_statement_t *statement) {
4326 errorf(&statement->base.source_position, "__leave not supported yet");
4329 static void statement_to_firm(statement_t *statement)
4331 switch(statement->kind) {
4332 case STATEMENT_INVALID:
4333 panic("invalid statement found");
4335 case STATEMENT_EMPTY:
4338 case STATEMENT_COMPOUND:
4339 compound_statement_to_firm(&statement->compound);
4341 case STATEMENT_RETURN:
4342 return_statement_to_firm(&statement->returns);
4344 case STATEMENT_EXPRESSION:
4345 expression_statement_to_firm(&statement->expression);
4348 if_statement_to_firm(&statement->ifs);
4350 case STATEMENT_WHILE:
4351 while_statement_to_firm(&statement->whiles);
4353 case STATEMENT_DO_WHILE:
4354 do_while_statement_to_firm(&statement->do_while);
4356 case STATEMENT_DECLARATION:
4357 declaration_statement_to_firm(&statement->declaration);
4359 case STATEMENT_BREAK:
4360 create_jump_statement(statement, break_label);
4362 case STATEMENT_CONTINUE:
4363 create_jump_statement(statement, continue_label);
4365 case STATEMENT_SWITCH:
4366 switch_statement_to_firm(&statement->switchs);
4368 case STATEMENT_CASE_LABEL:
4369 case_label_to_firm(&statement->case_label);
4372 for_statement_to_firm(&statement->fors);
4374 case STATEMENT_LABEL:
4375 label_to_firm(&statement->label);
4377 case STATEMENT_GOTO:
4378 goto_to_firm(&statement->gotos);
4381 asm_statement_to_firm(&statement->asms);
4383 case STATEMENT_MS_TRY:
4384 ms_try_statement_to_firm(&statement->ms_try);
4386 case STATEMENT_LEAVE:
4387 leave_statement_to_firm(&statement->leave);
4390 panic("Statement not implemented\n");
4393 static int count_decls_in_expression(const expression_t *expression);
4395 static int count_local_declarations(const declaration_t * decl,
4396 const declaration_t *const end)
4399 for (; decl != end; decl = decl->next) {
4400 if(decl->namespc != NAMESPACE_NORMAL)
4402 const type_t *type = skip_typeref(decl->type);
4403 if (!decl->address_taken && is_type_scalar(type))
4405 const initializer_t *initializer = decl->init.initializer;
4406 /* FIXME: should walk initializer hierarchies... */
4407 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4408 count += count_decls_in_expression(initializer->value.value);
4414 static int count_decls_in_expression(const expression_t *expression) {
4417 if(expression == NULL)
4420 switch((expression_kind_t) expression->base.kind) {
4421 case EXPR_STATEMENT:
4422 return count_decls_in_stmts(expression->statement.statement);
4424 int count_left = count_decls_in_expression(expression->binary.left);
4425 int count_right = count_decls_in_expression(expression->binary.right);
4426 return count_left + count_right;
4429 return count_decls_in_expression(expression->unary.value);
4431 call_argument_t *argument = expression->call.arguments;
4432 for( ; argument != NULL; argument = argument->next) {
4433 count += count_decls_in_expression(argument->expression);
4440 panic("unexpected expression kind");
4442 case EXPR_COMPOUND_LITERAL:
4446 case EXPR_CONDITIONAL:
4447 count += count_decls_in_expression(expression->conditional.condition);
4448 count += count_decls_in_expression(expression->conditional.true_expression);
4449 count += count_decls_in_expression(expression->conditional.false_expression);
4452 case EXPR_BUILTIN_PREFETCH:
4453 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4454 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4455 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4458 case EXPR_BUILTIN_CONSTANT_P:
4459 count += count_decls_in_expression(expression->builtin_constant.value);
4463 count += count_decls_in_expression(expression->select.compound);
4466 case EXPR_ARRAY_ACCESS:
4467 count += count_decls_in_expression(expression->array_access.array_ref);
4468 count += count_decls_in_expression(expression->array_access.index);
4471 case EXPR_CLASSIFY_TYPE:
4472 count += count_decls_in_expression(expression->classify_type.type_expression);
4476 case EXPR_ALIGNOF: {
4477 expression_t *tp_expression = expression->typeprop.tp_expression;
4478 if (tp_expression != NULL) {
4479 count += count_decls_in_expression(tp_expression);
4485 case EXPR_REFERENCE:
4487 case EXPR_CHARACTER_CONSTANT:
4488 case EXPR_WIDE_CHARACTER_CONSTANT:
4489 case EXPR_STRING_LITERAL:
4490 case EXPR_WIDE_STRING_LITERAL:
4492 case EXPR_BUILTIN_SYMBOL:
4498 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4499 * (or implement all the missing expressions here/implement a walker)
4505 static int count_decls_in_stmts(const statement_t *stmt)
4508 for (; stmt != NULL; stmt = stmt->base.next) {
4509 switch (stmt->kind) {
4510 case STATEMENT_EMPTY:
4513 case STATEMENT_DECLARATION: {
4514 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4515 count += count_local_declarations(decl_stmt->declarations_begin,
4516 decl_stmt->declarations_end->next);
4520 case STATEMENT_COMPOUND: {
4521 const compound_statement_t *const comp =
4523 count += count_decls_in_stmts(comp->statements);
4527 case STATEMENT_IF: {
4528 const if_statement_t *const if_stmt = &stmt->ifs;
4529 count += count_decls_in_expression(if_stmt->condition);
4530 count += count_decls_in_stmts(if_stmt->true_statement);
4531 count += count_decls_in_stmts(if_stmt->false_statement);
4535 case STATEMENT_SWITCH: {
4536 const switch_statement_t *const switch_stmt = &stmt->switchs;
4537 count += count_decls_in_expression(switch_stmt->expression);
4538 count += count_decls_in_stmts(switch_stmt->body);
4542 case STATEMENT_LABEL: {
4543 const label_statement_t *const label_stmt = &stmt->label;
4544 if(label_stmt->statement != NULL) {
4545 count += count_decls_in_stmts(label_stmt->statement);
4550 case STATEMENT_WHILE: {
4551 const while_statement_t *const while_stmt = &stmt->whiles;
4552 count += count_decls_in_expression(while_stmt->condition);
4553 count += count_decls_in_stmts(while_stmt->body);
4557 case STATEMENT_DO_WHILE: {
4558 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4559 count += count_decls_in_expression(do_while_stmt->condition);
4560 count += count_decls_in_stmts(do_while_stmt->body);
4564 case STATEMENT_FOR: {
4565 const for_statement_t *const for_stmt = &stmt->fors;
4566 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4567 count += count_decls_in_expression(for_stmt->initialisation);
4568 count += count_decls_in_expression(for_stmt->condition);
4569 count += count_decls_in_expression(for_stmt->step);
4570 count += count_decls_in_stmts(for_stmt->body);
4574 case STATEMENT_CASE_LABEL: {
4575 const case_label_statement_t *label = &stmt->case_label;
4576 count += count_decls_in_expression(label->expression);
4577 if(label->statement != NULL) {
4578 count += count_decls_in_stmts(label->statement);
4584 case STATEMENT_BREAK:
4585 case STATEMENT_CONTINUE:
4588 case STATEMENT_EXPRESSION: {
4589 const expression_statement_t *expr_stmt = &stmt->expression;
4590 count += count_decls_in_expression(expr_stmt->expression);
4594 case STATEMENT_GOTO:
4595 case STATEMENT_LEAVE:
4596 case STATEMENT_INVALID:
4599 case STATEMENT_RETURN: {
4600 const return_statement_t *ret_stmt = &stmt->returns;
4601 count += count_decls_in_expression(ret_stmt->value);
4605 case STATEMENT_MS_TRY: {
4606 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4607 count += count_decls_in_stmts(try_stmt->try_statement);
4608 if(try_stmt->except_expression != NULL)
4609 count += count_decls_in_expression(try_stmt->except_expression);
4610 count += count_decls_in_stmts(try_stmt->final_statement);
4618 static int get_function_n_local_vars(declaration_t *declaration)
4622 /* count parameters */
4623 count += count_local_declarations(declaration->scope.declarations, NULL);
4625 /* count local variables declared in body */
4626 count += count_decls_in_stmts(declaration->init.statement);
4631 static void initialize_function_parameters(declaration_t *declaration)
4633 ir_graph *irg = current_ir_graph;
4634 ir_node *args = get_irg_args(irg);
4635 ir_node *start_block = get_irg_start_block(irg);
4636 ir_type *function_irtype = get_ir_type(declaration->type);
4639 declaration_t *parameter = declaration->scope.declarations;
4640 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4641 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4642 type_t *type = skip_typeref(parameter->type);
4644 bool needs_entity = parameter->address_taken;
4645 assert(!is_type_array(type));
4646 if(is_type_compound(type)) {
4647 needs_entity = true;
4651 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4652 ident *id = new_id_from_str(parameter->symbol->string);
4653 set_entity_ident(entity, id);
4655 parameter->declaration_kind
4656 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4657 parameter->v.entity = entity;
4661 ir_mode *mode = get_ir_mode(parameter->type);
4663 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4665 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4666 parameter->v.value_number = next_value_number_function;
4667 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4668 ++next_value_number_function;
4670 set_value(parameter->v.value_number, proj);
4675 * Handle additional decl modifiers for IR-graphs
4677 * @param irg the IR-graph
4678 * @param dec_modifiers additional modifiers
4680 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4682 if (decl_modifiers & DM_NORETURN) {
4683 /* TRUE if the declaration includes the Microsoft
4684 __declspec(noreturn) specifier. */
4685 set_irg_additional_property(irg, mtp_property_noreturn);
4687 if (decl_modifiers & DM_NOTHROW) {
4688 /* TRUE if the declaration includes the Microsoft
4689 __declspec(nothrow) specifier. */
4690 set_irg_additional_property(irg, mtp_property_nothrow);
4692 if (decl_modifiers & DM_NAKED) {
4693 /* TRUE if the declaration includes the Microsoft
4694 __declspec(naked) specifier. */
4695 set_irg_additional_property(irg, mtp_property_naked);
4697 if (decl_modifiers & DM_FORCEINLINE) {
4698 /* TRUE if the declaration includes the
4699 Microsoft __forceinline specifier. */
4700 set_irg_inline_property(irg, irg_inline_forced);
4702 if (decl_modifiers & DM_NOINLINE) {
4703 /* TRUE if the declaration includes the Microsoft
4704 __declspec(noinline) specifier. */
4705 set_irg_inline_property(irg, irg_inline_forbidden);
4709 static void create_function(declaration_t *declaration)
4711 ir_entity *function_entity = get_function_entity(declaration);
4713 if(declaration->init.statement == NULL)
4716 current_function_decl = declaration;
4717 current_function_name = NULL;
4718 current_funcsig = NULL;
4720 assert(imature_blocks == NULL);
4721 imature_blocks = NEW_ARR_F(ir_node*, 0);
4723 int n_local_vars = get_function_n_local_vars(declaration);
4724 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4726 set_irg_fp_model(irg, firm_opt.fp_model);
4727 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4728 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4730 ir_node *first_block = get_cur_block();
4732 /* set inline flags */
4733 if (declaration->is_inline)
4734 set_irg_inline_property(irg, irg_inline_recomended);
4735 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4737 next_value_number_function = 0;
4738 initialize_function_parameters(declaration);
4740 statement_to_firm(declaration->init.statement);
4742 ir_node *end_block = get_irg_end_block(irg);
4744 /* do we have a return statement yet? */
4745 if(get_cur_block() != NULL) {
4746 type_t *type = skip_typeref(declaration->type);
4747 assert(is_type_function(type));
4748 const function_type_t *func_type = &type->function;
4749 const type_t *return_type
4750 = skip_typeref(func_type->return_type);
4753 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4754 ret = new_Return(get_store(), 0, NULL);
4757 if(is_type_scalar(return_type)) {
4758 mode = get_ir_mode(func_type->return_type);
4764 /* ยง5.1.2.2.3 main implicitly returns 0 */
4765 if (strcmp(declaration->symbol->string, "main") == 0) {
4766 in[0] = new_Const(mode, get_mode_null(mode));
4768 in[0] = new_Unknown(mode);
4770 ret = new_Return(get_store(), 1, in);
4772 add_immBlock_pred(end_block, ret);
4775 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4776 mature_immBlock(imature_blocks[i]);
4778 DEL_ARR_F(imature_blocks);
4779 imature_blocks = NULL;
4781 mature_immBlock(first_block);
4782 mature_immBlock(end_block);
4784 irg_finalize_cons(irg);
4786 /* finalize the frame type */
4787 ir_type *frame_type = get_irg_frame_type(irg);
4788 int n = get_compound_n_members(frame_type);
4791 for(int i = 0; i < n; ++i) {
4792 ir_entity *entity = get_compound_member(frame_type, i);
4793 ir_type *entity_type = get_entity_type(entity);
4795 int align = get_type_alignment_bytes(entity_type);
4796 if(align > align_all)
4800 misalign = offset % align;
4802 offset += align - misalign;
4806 set_entity_offset(entity, offset);
4807 offset += get_type_size_bytes(entity_type);
4809 set_type_size_bytes(frame_type, offset);
4810 set_type_alignment_bytes(frame_type, align_all);
4815 static void scope_to_firm(scope_t *scope)
4817 /* first pass: create declarations */
4818 declaration_t *declaration = scope->declarations;
4819 for( ; declaration != NULL; declaration = declaration->next) {
4820 if(declaration->namespc != NAMESPACE_NORMAL)
4822 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4823 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4825 if(declaration->symbol == NULL)
4828 type_t *type = skip_typeref(declaration->type);
4829 if(is_type_function(type)) {
4830 get_function_entity(declaration);
4832 create_global_variable(declaration);
4836 /* second pass: create code/initializers */
4837 declaration = scope->declarations;
4838 for( ; declaration != NULL; declaration = declaration->next) {
4839 if(declaration->namespc != NAMESPACE_NORMAL)
4841 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4842 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4844 if(declaration->symbol == NULL)
4847 type_t *type = declaration->type;
4848 if(type->kind == TYPE_FUNCTION) {
4849 create_function(declaration);
4851 assert(declaration->declaration_kind
4852 == DECLARATION_KIND_GLOBAL_VARIABLE);
4853 current_ir_graph = get_const_code_irg();
4854 create_declaration_initializer(declaration);
4859 void init_ast2firm(void)
4861 obstack_init(&asm_obst);
4862 init_atomic_modes();
4864 id_underscore = new_id_from_chars("_", 1);
4865 id_imp = new_id_from_chars("__imp_", 6);
4867 /* OS option must be set to the backend */
4868 const char *s = "ia32-gasmode=linux";
4869 switch (firm_opt.os_support) {
4870 case OS_SUPPORT_WIN32:
4871 create_ld_ident = create_ld_ident_win32;
4872 s = "ia32-gasmode=mingw";
4874 case OS_SUPPORT_LINUX:
4875 create_ld_ident = create_ld_ident_linux_elf;
4876 s = "ia32-gasmode=linux"; break;
4878 case OS_SUPPORT_MACHO:
4879 create_ld_ident = create_ld_ident_macho;
4880 s = "ia32-gasmode=macho"; break;
4885 /* create idents for all known runtime functions */
4886 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4887 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4891 static void init_ir_types(void)
4893 static int ir_types_initialized = 0;
4894 if(ir_types_initialized)
4896 ir_types_initialized = 1;
4898 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4899 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4900 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4902 ir_type_int = get_ir_type(type_int);
4903 ir_type_const_char = get_ir_type(type_const_char);
4904 ir_type_wchar_t = get_ir_type(type_wchar_t);
4905 ir_type_void = get_ir_type(type_void);
4908 void exit_ast2firm(void)
4910 obstack_free(&asm_obst, NULL);
4913 void translation_unit_to_firm(translation_unit_t *unit)
4915 /* just to be sure */
4916 continue_label = NULL;
4918 current_switch_cond = NULL;
4922 scope_to_firm(&unit->scope);