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>
28 #include <libfirm/be.h>
32 #include "adt/error.h"
33 #include "adt/array.h"
39 #include "diagnostic.h"
40 #include "lang_features.h"
42 #include "walk_statements.h"
44 #include "entitymap_t.h"
45 #include "driver/firm_opt.h"
46 #include "driver/firm_cmdline.h"
48 /* some idents needed for name mangling */
49 static ident *id_underscore;
52 static ir_type *ir_type_const_char;
53 static ir_type *ir_type_wchar_t;
54 static ir_type *ir_type_void;
55 static ir_type *ir_type_int;
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 declaration_t **all_labels;
63 static declaration_t **inner_functions;
64 static int inner_function_idx;
65 static ir_node *ijmp_list;
66 static bool constant_folding;
68 extern bool have_const_functions;
70 static const declaration_t *current_function_decl;
71 static ir_node *current_function_name;
72 static ir_node *current_funcsig;
73 static switch_statement_t *current_switch;
74 static ir_graph *current_function;
76 static entitymap_t entitymap;
78 static struct obstack asm_obst;
80 typedef enum declaration_kind_t {
81 DECLARATION_KIND_UNKNOWN,
82 DECLARATION_KIND_FUNCTION,
83 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
84 DECLARATION_KIND_GLOBAL_VARIABLE,
85 DECLARATION_KIND_LOCAL_VARIABLE,
86 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
87 DECLARATION_KIND_COMPOUND_MEMBER,
88 DECLARATION_KIND_LABEL_BLOCK,
89 DECLARATION_KIND_ENUM_ENTRY,
90 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
91 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
92 DECLARATION_KIND_TYPE,
93 DECLARATION_KIND_INNER_FUNCTION
96 static ir_type *get_ir_type(type_t *type);
97 static ir_type *get_ir_type_incomplete(type_t *type);
99 static void enqueue_inner_function(declaration_t *declaration) {
100 if (inner_functions == NULL) {
101 inner_functions = NEW_ARR_F(declaration_t *, 16);
102 inner_functions[0] = declaration;
103 inner_function_idx = 1;
105 int size = ARR_LEN(inner_functions);
106 if (inner_function_idx >= size) {
107 ARR_RESIZE(declaration_t *, inner_functions, size + 16);
109 inner_functions[inner_function_idx++] = declaration;
113 static declaration_t *next_inner_function(void) {
114 if (inner_function_idx == 0)
116 return inner_functions[--inner_function_idx];
119 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
121 const declaration_t *declaration = get_irg_loc_description(irg, pos);
123 if (declaration != NULL) {
124 warningf(&declaration->source_position,
125 "variable '%#T' might be used uninitialized",
126 declaration->type, declaration->symbol);
128 return new_r_Unknown(irg, mode);
131 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
133 const source_position_t *pos = (const source_position_t*) dbg;
136 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
140 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
142 const source_position_t *pos = (const source_position_t*) dbg;
147 return pos->input_name;
150 static dbg_info *get_dbg_info(const source_position_t *pos)
152 return (dbg_info*) pos;
155 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
157 static ir_mode *mode_int, *mode_uint;
159 static ir_node *_expression_to_firm(const expression_t *expression);
160 static ir_node *expression_to_firm(const expression_t *expression);
161 static inline ir_mode *get_ir_mode(type_t *type);
162 static void create_local_declaration(declaration_t *declaration);
164 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
166 unsigned flags = get_atomic_type_flags(kind);
167 unsigned size = get_atomic_type_size(kind);
168 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
169 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
172 unsigned bit_size = size * 8;
173 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
174 ir_mode_arithmetic arithmetic;
175 unsigned modulo_shift;
177 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
178 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
179 snprintf(name, sizeof(name), "i%s%u", is_signed ? "" : "u", bit_size);
180 sort = irms_int_number;
181 arithmetic = irma_twos_complement;
182 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
184 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
185 snprintf(name, sizeof(name), "f%u", bit_size);
186 sort = irms_float_number;
187 arithmetic = irma_ieee754;
190 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
198 * Initialises the atomic modes depending on the machine size.
200 static void init_atomic_modes(void)
202 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
203 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
205 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
206 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
208 /* there's no real void type in firm */
209 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
211 /* initialize pointer modes */
213 ir_mode_sort sort = irms_reference;
214 unsigned bit_size = machine_size;
216 ir_mode_arithmetic arithmetic = irma_twos_complement;
217 unsigned modulo_shift
218 = bit_size < machine_size ? machine_size : bit_size;
220 snprintf(name, sizeof(name), "p%u", machine_size);
221 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
224 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
225 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
227 /* Hmm, pointers should be machine size */
228 set_modeP_data(ptr_mode);
229 set_modeP_code(ptr_mode);
232 static unsigned get_compound_type_size(compound_type_t *type)
234 ir_type *irtype = get_ir_type((type_t*) type);
235 return get_type_size_bytes(irtype);
238 static unsigned get_array_type_size(array_type_t *type)
240 assert(!type->is_vla);
241 ir_type *irtype = get_ir_type((type_t*) type);
242 return get_type_size_bytes(irtype);
246 static unsigned get_type_size_const(type_t *type)
250 panic("error type occurred");
252 return get_atomic_type_size(type->atomic.akind);
254 return 2 * get_atomic_type_size(type->complex.akind);
256 return get_atomic_type_size(type->imaginary.akind);
258 return get_mode_size_bytes(mode_int);
259 case TYPE_COMPOUND_UNION:
260 case TYPE_COMPOUND_STRUCT:
261 return get_compound_type_size(&type->compound);
263 /* just a pointer to the function */
264 return get_mode_size_bytes(mode_P_code);
266 return get_mode_size_bytes(mode_P_data);
268 return get_array_type_size(&type->array);
270 return get_type_size_const(type->builtin.real_type);
272 panic("type size of bitfield request");
278 panic("Trying to determine size of invalid type");
281 static ir_node *get_type_size(type_t *type)
283 type = skip_typeref(type);
285 if (is_type_array(type) && type->array.is_vla) {
286 ir_node *size_node = type->array.size_node;
287 if (size_node == NULL) {
288 size_node = expression_to_firm(type->array.size_expression);
289 assert(!is_Const(size_node));
290 type->array.size_node = size_node;
293 ir_node *elem_size = get_type_size(type->array.element_type);
294 ir_mode *mode = get_irn_mode(size_node);
295 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
299 ir_mode *mode = get_ir_mode(type_size_t);
301 sym.type_p = get_ir_type(type);
302 return new_SymConst(mode, sym, symconst_type_size);
305 static unsigned count_parameters(const function_type_t *function_type)
309 function_parameter_t *parameter = function_type->parameters;
310 for ( ; parameter != NULL; parameter = parameter->next) {
318 * Creates a Firm type for an atomic type
320 static ir_type *create_atomic_type(const atomic_type_t *type)
322 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
323 atomic_type_kind_t kind = type->akind;
324 ir_mode *mode = _atomic_modes[kind];
325 ident *id = get_mode_ident(mode);
326 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
328 set_type_alignment_bytes(irtype, type->base.alignment);
334 * Creates a Firm type for a complex type
336 static ir_type *create_complex_type(const complex_type_t *type)
338 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
339 atomic_type_kind_t kind = type->akind;
340 ir_mode *mode = _atomic_modes[kind];
341 ident *id = get_mode_ident(mode);
346 /* FIXME: finish the array */
351 * Creates a Firm type for an imaginary type
353 static ir_type *create_imaginary_type(const imaginary_type_t *type)
355 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
356 atomic_type_kind_t kind = type->akind;
357 ir_mode *mode = _atomic_modes[kind];
358 ident *id = get_mode_ident(mode);
359 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
361 set_type_alignment_bytes(irtype, type->base.alignment);
367 * return type of a parameter (and take transparent union gnu extension into
370 static type_t *get_parameter_type(type_t *type)
372 type = skip_typeref(type);
373 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
374 declaration_t *decl = type->compound.declaration;
375 type = decl->scope.declarations->type;
381 static ir_type *create_method_type(const function_type_t *function_type)
383 type_t *return_type = function_type->return_type;
385 ident *id = id_unique("functiontype.%u");
386 int n_parameters = count_parameters(function_type);
387 int n_results = return_type == type_void ? 0 : 1;
388 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
389 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
391 if (return_type != type_void) {
392 ir_type *restype = get_ir_type(return_type);
393 set_method_res_type(irtype, 0, restype);
396 function_parameter_t *parameter = function_type->parameters;
398 for ( ; parameter != NULL; parameter = parameter->next) {
399 type_t *type = get_parameter_type(parameter->type);
400 ir_type *p_irtype = get_ir_type(type);
401 set_method_param_type(irtype, n, p_irtype);
405 if (function_type->variadic || function_type->unspecified_parameters) {
406 set_method_variadicity(irtype, variadicity_variadic);
409 unsigned cc = get_method_calling_convention(irtype);
410 switch (function_type->calling_convention) {
411 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
414 set_method_calling_convention(irtype, SET_CDECL(cc));
418 if (function_type->variadic || function_type->unspecified_parameters)
421 /* only non-variadic function can use stdcall, else use cdecl */
422 set_method_calling_convention(irtype, SET_STDCALL(cc));
426 if (function_type->variadic || function_type->unspecified_parameters)
428 /* only non-variadic function can use fastcall, else use cdecl */
429 set_method_calling_convention(irtype, SET_FASTCALL(cc));
433 /* Hmm, leave default, not accepted by the parser yet. */
434 warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet");
440 static ir_type *create_pointer_type(pointer_type_t *type)
442 type_t *points_to = type->points_to;
443 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
444 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
445 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
446 ir_points_to, mode_P_data, dbgi);
451 static ir_type *create_array_type(array_type_t *type)
453 type_t *element_type = type->element_type;
454 ir_type *ir_element_type = get_ir_type(element_type);
456 ident *id = id_unique("array.%u");
457 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
458 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
460 const int align = get_type_alignment_bytes(ir_element_type);
461 set_type_alignment_bytes(ir_type, align);
463 if (type->size_constant) {
464 int n_elements = type->size;
466 set_array_bounds_int(ir_type, 0, 0, n_elements);
468 size_t elemsize = get_type_size_bytes(ir_element_type);
469 if (elemsize % align > 0) {
470 elemsize += align - (elemsize % align);
472 set_type_size_bytes(ir_type, n_elements * elemsize);
474 set_array_lower_bound_int(ir_type, 0, 0);
476 set_type_state(ir_type, layout_fixed);
482 * Return the signed integer type of size bits.
484 * @param size the size
486 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
489 static ir_mode *s_modes[64 + 1] = {NULL, };
493 if (size <= 0 || size > 64)
496 mode = s_modes[size];
500 snprintf(name, sizeof(name), "bf_I%u", size);
501 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
502 size <= 32 ? 32 : size );
503 s_modes[size] = mode;
507 snprintf(name, sizeof(name), "I%u", size);
508 ident *id = new_id_from_str(name);
509 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
510 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
511 set_primitive_base_type(res, base_tp);
517 * Return the unsigned integer type of size bits.
519 * @param size the size
521 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
524 static ir_mode *u_modes[64 + 1] = {NULL, };
528 if (size <= 0 || size > 64)
531 mode = u_modes[size];
535 snprintf(name, sizeof(name), "bf_U%u", size);
536 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
537 size <= 32 ? 32 : size );
538 u_modes[size] = mode;
543 snprintf(name, sizeof(name), "U%u", size);
544 ident *id = new_id_from_str(name);
545 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
546 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
547 set_primitive_base_type(res, base_tp);
552 static ir_type *create_bitfield_type(bitfield_type_t *const type)
554 type_t *base = skip_typeref(type->base_type);
555 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
556 ir_type *irbase = get_ir_type(base);
558 unsigned size = type->bit_size;
560 assert(!is_type_float(base));
561 if (is_type_signed(base)) {
562 return get_signed_int_type_for_bit_size(irbase, size);
564 return get_unsigned_int_type_for_bit_size(irbase, size);
568 #define INVALID_TYPE ((ir_type_ptr)-1)
571 COMPOUND_IS_STRUCT = false,
572 COMPOUND_IS_UNION = true
576 * Construct firm type from ast struct type.
578 * As anonymous inner structs get flattened to a single firm type, we might get
579 * irtype, outer_offset and out_align passed (they represent the position of
580 * the anonymous inner struct inside the resulting firm struct)
582 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
583 size_t *outer_offset, size_t *outer_align,
584 bool incomplete, bool is_union)
586 declaration_t *declaration = type->declaration;
587 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
589 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
590 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
592 return declaration->v.irtype;
594 size_t align_all = 1;
596 size_t bit_offset = 0;
599 if (irtype == NULL) {
600 symbol_t *symbol = declaration->symbol;
602 if (symbol != NULL) {
603 id = new_id_from_str(symbol->string);
606 id = id_unique("__anonymous_union.%u");
608 id = id_unique("__anonymous_struct.%u");
611 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
614 irtype = new_d_type_union(id, dbgi);
616 irtype = new_d_type_struct(id, dbgi);
619 declaration->declaration_kind
620 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
621 declaration->v.irtype = irtype;
622 //type->base.firm_type = irtype;
624 offset = *outer_offset;
625 align_all = *outer_align;
631 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
633 declaration_t *entry = declaration->scope.declarations;
634 for( ; entry != NULL; entry = entry->next) {
635 if (entry->namespc != NAMESPACE_NORMAL)
638 size_t prev_offset = offset;
640 symbol_t *symbol = entry->symbol;
641 type_t *entry_type = skip_typeref(entry->type);
642 dbg_info *dbgi = get_dbg_info(&entry->source_position);
645 if (symbol != NULL) {
646 ident = new_id_from_str(symbol->string);
648 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
649 create_compound_type(&entry_type->compound, irtype, &offset,
650 &align_all, false, COMPOUND_IS_STRUCT);
651 goto finished_member;
652 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
653 create_compound_type(&entry_type->compound, irtype, &offset,
654 &align_all, false, COMPOUND_IS_UNION);
655 goto finished_member;
657 assert(entry_type->kind == TYPE_BITFIELD);
659 ident = id_unique("anon.%u");
662 ir_type *base_irtype;
663 if (entry_type->kind == TYPE_BITFIELD) {
664 base_irtype = get_ir_type(entry_type->bitfield.base_type);
666 base_irtype = get_ir_type(entry_type);
669 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
670 size_t misalign = offset % entry_alignment;
672 ir_type *entry_irtype = get_ir_type(entry_type);
673 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
676 size_t bits_remainder;
677 if (entry_type->kind == TYPE_BITFIELD) {
678 size_t size_bits = entry_type->bitfield.bit_size;
679 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
681 if (size_bits > rest_size_bits) {
682 /* start a new bucket */
683 offset += entry_alignment - misalign;
689 /* put into current bucket */
690 base = offset - misalign;
691 bits_remainder = misalign * 8 + bit_offset;
694 offset += size_bits / 8;
695 bit_offset = bit_offset + (size_bits % 8);
697 size_t entry_size = get_type_size_bytes(base_irtype);
698 if (misalign > 0 || bit_offset > 0)
699 offset += entry_alignment - misalign;
703 offset += entry_size;
707 if (entry_alignment > align_all) {
708 if (entry_alignment % align_all != 0) {
709 panic("uneven alignments not supported yet");
711 align_all = entry_alignment;
714 set_entity_offset(entity, base);
715 set_entity_offset_bits_remainder(entity,
716 (unsigned char) bits_remainder);
717 //add_struct_member(irtype, entity);
718 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
719 assert(entry->v.entity == NULL);
720 entry->v.entity = entity;
724 size_t entry_size = offset - prev_offset;
725 if (entry_size > size) {
737 size_t misalign = offset % align_all;
738 if (misalign > 0 || bit_offset > 0) {
739 size += align_all - misalign;
742 if (outer_offset != NULL) {
744 *outer_offset = offset;
746 *outer_offset += size;
749 if (align_all > *outer_align) {
750 if (align_all % *outer_align != 0) {
751 panic("uneven alignments not supported yet");
753 *outer_align = align_all;
756 set_type_alignment_bytes(irtype, align_all);
757 set_type_size_bytes(irtype, size);
758 set_type_state(irtype, layout_fixed);
764 static ir_type *create_enum_type(enum_type_t *const type)
766 type->base.firm_type = ir_type_int;
768 ir_mode *const mode = mode_int;
769 tarval *const one = get_mode_one(mode);
770 tarval * tv_next = get_tarval_null(mode);
772 bool constant_folding_old = constant_folding;
773 constant_folding = true;
775 declaration_t *declaration = type->declaration->next;
776 for (; declaration != NULL; declaration = declaration->next) {
777 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
780 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
782 expression_t *const init = declaration->init.enum_value;
784 ir_node *const cnst = expression_to_firm(init);
785 if (!is_Const(cnst)) {
786 panic("couldn't fold constant");
788 tv_next = get_Const_tarval(cnst);
790 declaration->v.enum_val = tv_next;
791 tv_next = tarval_add(tv_next, one);
794 constant_folding = constant_folding_old;
799 static ir_type *get_ir_type_incomplete(type_t *type)
801 assert(type != NULL);
802 type = skip_typeref(type);
804 if (type->base.firm_type != NULL) {
805 assert(type->base.firm_type != INVALID_TYPE);
806 return type->base.firm_type;
809 switch (type->kind) {
810 case TYPE_COMPOUND_STRUCT:
811 return create_compound_type(&type->compound, NULL, NULL, NULL,
812 true, COMPOUND_IS_STRUCT);
813 case TYPE_COMPOUND_UNION:
814 return create_compound_type(&type->compound, NULL, NULL, NULL,
815 true, COMPOUND_IS_UNION);
817 return get_ir_type(type);
821 static ir_type *get_ir_type(type_t *type)
823 assert(type != NULL);
825 type = skip_typeref(type);
827 if (type->base.firm_type != NULL) {
828 assert(type->base.firm_type != INVALID_TYPE);
829 return type->base.firm_type;
832 ir_type *firm_type = NULL;
833 switch (type->kind) {
835 /* Happens while constant folding, when there was an error */
836 return create_atomic_type(&type_void->atomic);
839 firm_type = create_atomic_type(&type->atomic);
842 firm_type = create_complex_type(&type->complex);
845 firm_type = create_imaginary_type(&type->imaginary);
848 firm_type = create_method_type(&type->function);
851 firm_type = create_pointer_type(&type->pointer);
854 firm_type = create_array_type(&type->array);
856 case TYPE_COMPOUND_STRUCT:
857 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
858 false, COMPOUND_IS_STRUCT);
860 case TYPE_COMPOUND_UNION:
861 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
862 false, COMPOUND_IS_UNION);
865 firm_type = create_enum_type(&type->enumt);
868 firm_type = get_ir_type(type->builtin.real_type);
871 firm_type = create_bitfield_type(&type->bitfield);
879 if (firm_type == NULL)
880 panic("unknown type found");
882 type->base.firm_type = firm_type;
886 static inline ir_mode *get_ir_mode(type_t *type)
888 ir_type *irtype = get_ir_type(type);
890 /* firm doesn't report a mode for arrays somehow... */
891 if (is_Array_type(irtype)) {
895 ir_mode *mode = get_type_mode(irtype);
896 assert(mode != NULL);
900 /** Names of the runtime functions. */
901 static const struct {
902 int id; /**< the rts id */
903 int n_res; /**< number of return values */
904 const char *name; /**< the name of the rts function */
905 int n_params; /**< number of parameters */
906 unsigned flags; /**< language flags */
908 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
909 { rts_abort, 0, "abort", 0, _C89 },
910 { rts_alloca, 1, "alloca", 1, _ALL },
911 { rts_abs, 1, "abs", 1, _C89 },
912 { rts_labs, 1, "labs", 1, _C89 },
913 { rts_llabs, 1, "llabs", 1, _C99 },
914 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
916 { rts_fabs, 1, "fabs", 1, _C89 },
917 { rts_sqrt, 1, "sqrt", 1, _C89 },
918 { rts_cbrt, 1, "cbrt", 1, _C99 },
919 { rts_exp, 1, "exp", 1, _C89 },
920 { rts_exp2, 1, "exp2", 1, _C89 },
921 { rts_exp10, 1, "exp10", 1, _GNUC },
922 { rts_log, 1, "log", 1, _C89 },
923 { rts_log2, 1, "log2", 1, _C89 },
924 { rts_log10, 1, "log10", 1, _C89 },
925 { rts_pow, 1, "pow", 2, _C89 },
926 { rts_sin, 1, "sin", 1, _C89 },
927 { rts_cos, 1, "cos", 1, _C89 },
928 { rts_tan, 1, "tan", 1, _C89 },
929 { rts_asin, 1, "asin", 1, _C89 },
930 { rts_acos, 1, "acos", 1, _C89 },
931 { rts_atan, 1, "atan", 1, _C89 },
932 { rts_sinh, 1, "sinh", 1, _C89 },
933 { rts_cosh, 1, "cosh", 1, _C89 },
934 { rts_tanh, 1, "tanh", 1, _C89 },
936 { rts_fabsf, 1, "fabsf", 1, _C99 },
937 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
938 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
939 { rts_expf, 1, "expf", 1, _C99 },
940 { rts_exp2f, 1, "exp2f", 1, _C99 },
941 { rts_exp10f, 1, "exp10f", 1, _GNUC },
942 { rts_logf, 1, "logf", 1, _C99 },
943 { rts_log2f, 1, "log2f", 1, _C99 },
944 { rts_log10f, 1, "log10f", 1, _C99 },
945 { rts_powf, 1, "powf", 2, _C99 },
946 { rts_sinf, 1, "sinf", 1, _C99 },
947 { rts_cosf, 1, "cosf", 1, _C99 },
948 { rts_tanf, 1, "tanf", 1, _C99 },
949 { rts_asinf, 1, "asinf", 1, _C99 },
950 { rts_acosf, 1, "acosf", 1, _C99 },
951 { rts_atanf, 1, "atanf", 1, _C99 },
952 { rts_sinhf, 1, "sinhf", 1, _C99 },
953 { rts_coshf, 1, "coshf", 1, _C99 },
954 { rts_tanhf, 1, "tanhf", 1, _C99 },
956 { rts_fabsl, 1, "fabsl", 1, _C99 },
957 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
958 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
959 { rts_expl, 1, "expl", 1, _C99 },
960 { rts_exp2l, 1, "exp2l", 1, _C99 },
961 { rts_exp10l, 1, "exp10l", 1, _GNUC },
962 { rts_logl, 1, "logl", 1, _C99 },
963 { rts_log2l, 1, "log2l", 1, _C99 },
964 { rts_log10l, 1, "log10l", 1, _C99 },
965 { rts_powl, 1, "powl", 2, _C99 },
966 { rts_sinl, 1, "sinl", 1, _C99 },
967 { rts_cosl, 1, "cosl", 1, _C99 },
968 { rts_tanl, 1, "tanl", 1, _C99 },
969 { rts_asinl, 1, "asinl", 1, _C99 },
970 { rts_acosl, 1, "acosl", 1, _C99 },
971 { rts_atanl, 1, "atanl", 1, _C99 },
972 { rts_sinhl, 1, "sinhl", 1, _C99 },
973 { rts_coshl, 1, "coshl", 1, _C99 },
974 { rts_tanhl, 1, "tanhl", 1, _C99 },
976 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
977 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
978 { rts_strcmp, 1, "strcmp", 2, _C89 },
979 { rts_strncmp, 1, "strncmp", 3, _C89 }
982 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
985 * Mangles an entity linker (ld) name for win32 usage.
987 * @param ent the entity to be mangled
988 * @param declaration the declaration
990 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
994 if (is_Method_type(get_entity_type(ent)))
995 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
997 /* always add an underscore in win32 */
998 id = mangle(id_underscore, get_entity_ident(ent));
1001 decl_modifiers_t decl_modifiers = declaration->modifiers;
1002 if (decl_modifiers & DM_DLLIMPORT) {
1003 /* add prefix for imported symbols */
1004 id = mangle(id_imp, id);
1010 * Mangles an entity linker (ld) name for Linux ELF usage.
1012 * @param ent the entity to be mangled
1013 * @param declaration the declaration
1015 static ident *create_ld_ident_linux_elf(ir_entity *entity,
1016 declaration_t *declaration)
1019 return get_entity_ident(entity);
1023 * Mangles an entity linker (ld) name for Mach-O usage.
1025 * @param ent the entity to be mangled
1026 * @param declaration the declaration
1028 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
1031 ident *id = mangle(id_underscore, get_entity_ident(ent));
1035 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
1036 declaration_t *declaration);
1037 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1040 * Handle GNU attributes for entities
1042 * @param ent the entity
1043 * @param decl the routine declaration
1045 static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
1047 if (decl->modifiers & DM_PURE) {
1048 /* TRUE if the declaration includes the GNU
1049 __attribute__((pure)) specifier. */
1050 set_entity_additional_property(ent, mtp_property_pure);
1052 if (decl->modifiers & DM_CONST) {
1053 set_entity_additional_property(ent, mtp_property_const);
1054 have_const_functions = true;
1056 if (decl->modifiers & DM_USED) {
1057 /* TRUE if the declaration includes the GNU
1058 __attribute__((used)) specifier. */
1059 set_entity_stickyness(ent, stickyness_sticky);
1064 * Creates an entity representing a function.
1066 * @param declaration the function declaration
1068 static ir_entity *get_function_entity(declaration_t *declaration)
1070 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION ||
1071 declaration->declaration_kind == DECLARATION_KIND_INNER_FUNCTION)
1072 return declaration->v.entity;
1073 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
1075 symbol_t *symbol = declaration->symbol;
1076 ident *id = new_id_from_str(symbol->string);
1078 ir_type *global_type = get_glob_type();
1079 ir_type *ir_type_method = get_ir_type(declaration->type);
1080 assert(is_Method_type(ir_type_method));
1082 /* already an entity defined? */
1083 ir_entity *entity = entitymap_get(&entitymap, symbol);
1084 if (entity != NULL) {
1085 if (get_entity_visibility(entity) == visibility_external_allocated
1086 && declaration->init.statement != NULL) {
1087 set_entity_visibility(entity, visibility_external_visible);
1089 goto entity_created;
1092 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1093 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1094 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1096 handle_gnu_attributes_ent(entity, declaration);
1098 /* static inline => local
1099 * extern inline => local
1100 * inline without definition => local
1101 * inline with definition => external_visible */
1102 storage_class_tag_t const storage_class = (storage_class_tag_t)declaration->storage_class;
1103 bool const is_inline = declaration->is_inline;
1104 bool const has_body = declaration->init.statement != NULL;
1105 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1106 set_entity_visibility(entity, visibility_external_visible);
1107 } else if (storage_class == STORAGE_CLASS_STATIC ||
1108 (is_inline && has_body)) {
1110 /* this entity was declared, but is defined nowhere */
1111 set_entity_peculiarity(entity, peculiarity_description);
1113 set_entity_visibility(entity, visibility_local);
1114 } else if (has_body) {
1115 set_entity_visibility(entity, visibility_external_visible);
1117 set_entity_visibility(entity, visibility_external_allocated);
1119 set_entity_allocation(entity, allocation_static);
1121 /* We should check for file scope here, but as long as we compile C only
1122 this is not needed. */
1123 if (! firm_opt.freestanding) {
1124 /* check for a known runtime function */
1125 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1126 if (id != rts_idents[i])
1129 /* ignore those rts functions not necessary needed for current mode */
1130 if ((c_mode & rts_data[i].flags) == 0)
1132 assert(rts_entities[rts_data[i].id] == NULL);
1133 rts_entities[rts_data[i].id] = entity;
1137 entitymap_insert(&entitymap, symbol, entity);
1140 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1141 declaration->v.entity = entity;
1147 * Creates a Const node representing a constant.
1149 static ir_node *const_to_firm(const const_expression_t *cnst)
1151 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1152 ir_mode *mode = get_ir_mode(cnst->base.type);
1157 if (mode_is_float(mode)) {
1158 tv = new_tarval_from_double(cnst->v.float_value, mode);
1160 if (mode_is_signed(mode)) {
1161 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1163 len = snprintf(buf, sizeof(buf), "%llu",
1164 (unsigned long long) cnst->v.int_value);
1166 tv = new_tarval_from_str(buf, len, mode);
1169 return new_d_Const(dbgi, mode, tv);
1173 * Creates a Const node representing a character constant.
1175 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1177 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1178 ir_mode *mode = get_ir_mode(cnst->base.type);
1180 long long int v = 0;
1181 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1182 if (char_is_signed) {
1183 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1185 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1189 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1190 tarval *tv = new_tarval_from_str(buf, len, mode);
1192 return new_d_Const(dbgi, mode, tv);
1196 * Creates a Const node representing a wide character constant.
1198 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1200 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1201 ir_mode *mode = get_ir_mode(cnst->base.type);
1203 long long int v = cnst->v.wide_character.begin[0];
1206 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1207 tarval *tv = new_tarval_from_str(buf, len, mode);
1209 return new_d_Const(dbgi, mode, tv);
1213 * Creates a SymConst for a given entity.
1215 * @param dbgi debug info
1216 * @param mode the (reference) mode for the SymConst
1217 * @param entity the entity
1219 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1222 assert(entity != NULL);
1223 union symconst_symbol sym;
1224 sym.entity_p = entity;
1225 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1229 * Creates a SymConst node representing a string constant.
1231 * @param src_pos the source position of the string constant
1232 * @param id_prefix a prefix for the name of the generated string constant
1233 * @param value the value of the string constant
1235 static ir_node *string_to_firm(const source_position_t *const src_pos,
1236 const char *const id_prefix,
1237 const string_t *const value)
1239 ir_type *const global_type = get_glob_type();
1240 dbg_info *const dbgi = get_dbg_info(src_pos);
1241 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1242 ir_type_const_char, dbgi);
1244 ident *const id = id_unique(id_prefix);
1245 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1246 set_entity_ld_ident(entity, id);
1247 set_entity_variability(entity, variability_constant);
1248 set_entity_allocation(entity, allocation_static);
1250 ir_type *const elem_type = ir_type_const_char;
1251 ir_mode *const mode = get_type_mode(elem_type);
1253 const char* const string = value->begin;
1254 const size_t slen = value->size;
1256 set_array_lower_bound_int(type, 0, 0);
1257 set_array_upper_bound_int(type, 0, slen);
1258 set_type_size_bytes(type, slen);
1259 set_type_state(type, layout_fixed);
1261 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1262 for(size_t i = 0; i < slen; ++i) {
1263 tvs[i] = new_tarval_from_long(string[i], mode);
1266 set_array_entity_values(entity, tvs, slen);
1269 return create_symconst(dbgi, mode_P_data, entity);
1273 * Creates a SymConst node representing a string literal.
1275 * @param literal the string literal
1277 static ir_node *string_literal_to_firm(
1278 const string_literal_expression_t* literal)
1280 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1285 * Creates a SymConst node representing a wide string literal.
1287 * @param literal the wide string literal
1289 static ir_node *wide_string_literal_to_firm(
1290 const wide_string_literal_expression_t* const literal)
1292 ir_type *const global_type = get_glob_type();
1293 ir_type *const elem_type = ir_type_wchar_t;
1294 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1295 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1298 ident *const id = id_unique("Lstr.%u");
1299 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1300 set_entity_ld_ident(entity, id);
1301 set_entity_variability(entity, variability_constant);
1302 set_entity_allocation(entity, allocation_static);
1304 ir_mode *const mode = get_type_mode(elem_type);
1306 const wchar_rep_t *const string = literal->value.begin;
1307 const size_t slen = literal->value.size;
1309 set_array_lower_bound_int(type, 0, 0);
1310 set_array_upper_bound_int(type, 0, slen);
1311 set_type_size_bytes(type, slen);
1312 set_type_state(type, layout_fixed);
1314 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1315 for(size_t i = 0; i < slen; ++i) {
1316 tvs[i] = new_tarval_from_long(string[i], mode);
1319 set_array_entity_values(entity, tvs, slen);
1322 return create_symconst(dbgi, mode_P_data, entity);
1325 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1326 ir_node *const addr)
1328 ir_type *irtype = get_ir_type(type);
1329 if (is_compound_type(irtype)
1330 || is_Method_type(irtype)
1331 || is_Array_type(irtype)) {
1335 ir_mode *const mode = get_type_mode(irtype);
1336 ir_node *const memory = get_store();
1337 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1338 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1339 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1341 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1342 set_Load_volatility(load, volatility_is_volatile);
1345 set_store(load_mem);
1350 * Creates a strict Conv if neccessary.
1352 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1354 ir_mode *mode = get_irn_mode(node);
1356 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1358 if (!mode_is_float(mode))
1361 /* check if there is already a Conv */
1362 if (is_Conv(node)) {
1363 /* convert it into a strict Conv */
1364 set_Conv_strict(node, 1);
1368 /* otherwise create a new one */
1369 return new_d_strictConv(dbgi, node, mode);
1372 static ir_node *get_global_var_address(dbg_info *const dbgi,
1373 const declaration_t *const decl)
1375 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1377 ir_entity *const entity = decl->v.entity;
1378 switch ((storage_class_tag_t)decl->storage_class) {
1379 case STORAGE_CLASS_THREAD:
1380 case STORAGE_CLASS_THREAD_EXTERN:
1381 case STORAGE_CLASS_THREAD_STATIC: {
1382 ir_node *const no_mem = new_NoMem();
1383 ir_node *const tls = get_irg_tls(current_ir_graph);
1384 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1388 return create_symconst(dbgi, mode_P_data, entity);
1393 * Returns the correct base address depending on whether it is a parameter or a
1394 * normal local variable.
1396 static ir_node *get_local_frame(ir_entity *const ent)
1398 ir_graph *const irg = current_ir_graph;
1399 const ir_type *const owner = get_entity_owner(ent);
1400 if (owner == get_irg_frame_type(irg)) {
1401 return get_irg_frame(irg);
1403 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1404 return get_irg_value_param_base(irg);
1408 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1410 ir_mode *value_mode = get_irn_mode(value);
1412 if (value_mode == dest_mode || is_Bad(value))
1415 if (dest_mode == mode_b) {
1416 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1417 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1418 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1422 return new_d_Conv(dbgi, value, dest_mode);
1426 * Keep all memory edges of the given block.
1428 static void keep_all_memory(ir_node *block) {
1429 ir_node *old = get_cur_block();
1431 set_cur_block(block);
1432 keep_alive(get_store());
1433 /* TODO: keep all memory edges from restricted pointers */
1437 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1439 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1440 declaration_t *declaration = ref->declaration;
1441 type_t *type = skip_typeref(declaration->type);
1443 /* make sure the type is constructed */
1444 (void) get_ir_type(type);
1446 switch ((declaration_kind_t)declaration->declaration_kind) {
1447 case DECLARATION_KIND_TYPE:
1448 case DECLARATION_KIND_UNKNOWN:
1451 case DECLARATION_KIND_ENUM_ENTRY: {
1452 ir_mode *const mode = get_ir_mode(type);
1453 return new_Const(mode, declaration->v.enum_val);
1456 case DECLARATION_KIND_LOCAL_VARIABLE: {
1457 ir_mode *const mode = get_ir_mode(type);
1458 return get_value(declaration->v.value_number, mode);
1460 case DECLARATION_KIND_FUNCTION: {
1461 ir_mode *const mode = get_ir_mode(type);
1462 return create_symconst(dbgi, mode, declaration->v.entity);
1464 case DECLARATION_KIND_INNER_FUNCTION: {
1465 ir_mode *const mode = get_ir_mode(type);
1466 if (! declaration->goto_to_outer && !declaration->need_closure) {
1467 /* inner function not using the closure */
1468 return create_symconst(dbgi, mode, declaration->v.entity);
1470 /* TODO: need trampoline here */
1471 panic("Trampoline code not implemented");
1472 return create_symconst(dbgi, mode, declaration->v.entity);
1475 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1476 ir_node *const addr = get_global_var_address(dbgi, declaration);
1477 return deref_address(dbgi, declaration->type, addr);
1480 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1481 ir_entity *entity = declaration->v.entity;
1482 ir_node *frame = get_local_frame(entity);
1483 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1484 return deref_address(dbgi, declaration->type, sel);
1487 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1488 return declaration->v.vla_base;
1490 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1491 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1492 case DECLARATION_KIND_COMPOUND_MEMBER:
1493 case DECLARATION_KIND_LABEL_BLOCK:
1494 panic("not implemented reference type");
1497 panic("reference to declaration with unknown type found");
1500 static ir_node *reference_addr(const reference_expression_t *ref)
1502 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1503 declaration_t *declaration = ref->declaration;
1505 switch((declaration_kind_t) declaration->declaration_kind) {
1506 case DECLARATION_KIND_TYPE:
1507 case DECLARATION_KIND_UNKNOWN:
1509 case DECLARATION_KIND_LOCAL_VARIABLE:
1510 /* you can store to a local variable (so we don't panic but return NULL
1511 * as an indicator for no real address) */
1513 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1514 ir_node *const addr = get_global_var_address(dbgi, declaration);
1517 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1518 ir_entity *entity = declaration->v.entity;
1519 ir_node *frame = get_local_frame(entity);
1520 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1525 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1526 return declaration->v.vla_base;
1528 case DECLARATION_KIND_ENUM_ENTRY:
1529 panic("trying to reference enum entry");
1531 case DECLARATION_KIND_FUNCTION: {
1532 type_t *const type = skip_typeref(declaration->type);
1533 ir_mode *const mode = get_ir_mode(type);
1534 return create_symconst(dbgi, mode, declaration->v.entity);
1537 case DECLARATION_KIND_INNER_FUNCTION:
1538 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1539 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1540 case DECLARATION_KIND_COMPOUND_MEMBER:
1541 case DECLARATION_KIND_LABEL_BLOCK:
1542 panic("not implemented reference type");
1545 panic("reference to declaration with unknown type found");
1549 * Transform calls to builtin functions.
1551 static ir_node *process_builtin_call(const call_expression_t *call)
1553 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1555 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1556 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1558 type_t *type = skip_typeref(builtin->base.type);
1559 assert(is_type_pointer(type));
1561 type_t *function_type = skip_typeref(type->pointer.points_to);
1562 symbol_t *symbol = builtin->symbol;
1564 switch(symbol->ID) {
1565 case T___builtin_alloca: {
1566 if (call->arguments == NULL || call->arguments->next != NULL) {
1567 panic("invalid number of parameters on __builtin_alloca");
1569 expression_t *argument = call->arguments->expression;
1570 ir_node *size = expression_to_firm(argument);
1572 ir_node *store = get_store();
1573 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1575 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1577 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1582 case T___builtin_huge_val:
1583 case T___builtin_inf:
1584 case T___builtin_inff:
1585 case T___builtin_infl: {
1586 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1587 tarval *tv = get_mode_infinite(mode);
1588 ir_node *res = new_d_Const(dbgi, mode, tv);
1591 case T___builtin_nan:
1592 case T___builtin_nanf:
1593 case T___builtin_nanl: {
1594 /* Ignore string for now... */
1595 assert(is_type_function(function_type));
1596 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1597 tarval *tv = get_mode_NAN(mode);
1598 ir_node *res = new_d_Const(dbgi, mode, tv);
1601 case T___builtin_va_end:
1604 panic("Unsupported builtin found\n");
1609 * Transform a call expression.
1610 * Handles some special cases, like alloca() calls, which must be resolved
1611 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1612 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1615 static ir_node *call_expression_to_firm(const call_expression_t *call)
1617 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1618 assert(get_cur_block() != NULL);
1620 expression_t *function = call->function;
1621 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1622 return process_builtin_call(call);
1624 if (function->kind == EXPR_REFERENCE) {
1625 const reference_expression_t *ref = &function->reference;
1626 declaration_t *declaration = ref->declaration;
1628 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1629 if (declaration->v.entity == rts_entities[rts_alloca]) {
1630 /* handle alloca() call */
1631 expression_t *argument = call->arguments->expression;
1632 ir_node *size = expression_to_firm(argument);
1634 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1636 ir_node *store = get_store();
1637 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1638 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1640 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1642 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1648 ir_node *callee = expression_to_firm(function);
1650 type_t *type = skip_typeref(function->base.type);
1651 assert(is_type_pointer(type));
1652 pointer_type_t *pointer_type = &type->pointer;
1653 type_t *points_to = skip_typeref(pointer_type->points_to);
1654 assert(is_type_function(points_to));
1655 function_type_t *function_type = &points_to->function;
1657 int n_parameters = 0;
1658 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1659 ir_type *new_method_type = NULL;
1660 if (function_type->variadic || function_type->unspecified_parameters) {
1661 const call_argument_t *argument = call->arguments;
1662 for( ; argument != NULL; argument = argument->next) {
1666 /* we need to construct a new method type matching the call
1668 int n_res = get_method_n_ress(ir_method_type);
1669 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1670 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1671 n_parameters, n_res, dbgi);
1672 set_method_calling_convention(new_method_type,
1673 get_method_calling_convention(ir_method_type));
1674 set_method_additional_properties(new_method_type,
1675 get_method_additional_properties(ir_method_type));
1676 set_method_variadicity(new_method_type,
1677 get_method_variadicity(ir_method_type));
1679 for(int i = 0; i < n_res; ++i) {
1680 set_method_res_type(new_method_type, i,
1681 get_method_res_type(ir_method_type, i));
1683 argument = call->arguments;
1684 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1685 expression_t *expression = argument->expression;
1686 ir_type *irtype = get_ir_type(expression->base.type);
1687 set_method_param_type(new_method_type, i, irtype);
1689 ir_method_type = new_method_type;
1691 n_parameters = get_method_n_params(ir_method_type);
1694 ir_node *in[n_parameters];
1696 const call_argument_t *argument = call->arguments;
1697 for(int n = 0; n < n_parameters; ++n) {
1698 expression_t *expression = argument->expression;
1699 ir_node *arg_node = expression_to_firm(expression);
1701 arg_node = do_strict_conv(dbgi, arg_node);
1705 argument = argument->next;
1708 ir_node *store = get_store();
1709 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1711 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1714 type_t *return_type = skip_typeref(function_type->return_type);
1715 ir_node *result = NULL;
1717 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1719 if (is_type_scalar(return_type)) {
1720 mode = get_ir_mode(return_type);
1724 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1725 result = new_d_Proj(dbgi, resproj, mode, 0);
1728 if (function->kind == EXPR_REFERENCE &&
1729 function->reference.declaration->modifiers & DM_NORETURN) {
1730 /* A dead end: Keep the Call and the Block. Also place all further
1731 * nodes into a new and unreachable block. */
1733 keep_alive(get_cur_block());
1740 static void statement_to_firm(statement_t *statement);
1741 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1743 static ir_node *expression_to_addr(const expression_t *expression);
1744 static ir_node *create_condition_evaluation(const expression_t *expression,
1745 ir_node *true_block,
1746 ir_node *false_block);
1748 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1751 value = do_strict_conv(dbgi, value);
1753 ir_node *memory = get_store();
1755 if (is_type_scalar(type)) {
1756 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1757 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1758 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1759 set_Store_volatility(store, volatility_is_volatile);
1760 set_store(store_mem);
1762 ir_type *irtype = get_ir_type(type);
1763 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1764 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1765 set_store(copyb_mem);
1769 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1771 tarval *all_one = get_mode_all_one(mode);
1772 int mode_size = get_mode_size_bits(mode);
1774 assert(offset >= 0);
1776 assert(offset + size <= mode_size);
1777 if (size == mode_size) {
1781 long shiftr = get_mode_size_bits(mode) - size;
1782 long shiftl = offset;
1783 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1784 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1785 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1786 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1791 static void bitfield_store_to_firm(dbg_info *dbgi,
1792 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1794 ir_type *entity_type = get_entity_type(entity);
1795 ir_type *base_type = get_primitive_base_type(entity_type);
1796 assert(base_type != NULL);
1797 ir_mode *mode = get_type_mode(base_type);
1799 value = create_conv(dbgi, value, mode);
1801 /* kill upper bits of value and shift to right position */
1802 int bitoffset = get_entity_offset_bits_remainder(entity);
1803 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1805 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1806 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1807 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1808 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1809 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1810 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1812 /* load current value */
1813 ir_node *mem = get_store();
1814 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1815 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1816 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1817 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1818 tarval *inv_mask = tarval_not(shift_mask);
1819 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1820 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1822 /* construct new value and store */
1823 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1824 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1825 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1826 set_store(store_mem);
1829 set_Load_volatility(load, volatility_is_volatile);
1830 set_Store_volatility(store, volatility_is_volatile);
1834 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1837 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1838 type_t *type = expression->base.type;
1839 ir_mode *mode = get_ir_mode(type);
1840 ir_node *mem = get_store();
1841 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1842 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1843 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1845 load_res = create_conv(dbgi, load_res, mode_int);
1847 set_store(load_mem);
1849 /* kill upper bits */
1850 ir_entity *entity = expression->compound_entry->v.entity;
1851 int bitoffset = get_entity_offset_bits_remainder(entity);
1852 ir_type *entity_type = get_entity_type(entity);
1853 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1854 long shift_bitsl = machine_size - bitoffset - bitsize;
1855 assert(shift_bitsl >= 0);
1856 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1857 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1858 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1860 long shift_bitsr = bitoffset + shift_bitsl;
1861 assert(shift_bitsr <= (long) machine_size);
1862 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1863 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1865 if (mode_is_signed(mode)) {
1866 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1868 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1871 return create_conv(dbgi, shiftr, mode);
1874 static void set_value_for_expression_addr(const expression_t *expression,
1875 ir_node *value, ir_node *addr)
1877 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1878 value = do_strict_conv(dbgi, value);
1880 if (expression->kind == EXPR_REFERENCE) {
1881 const reference_expression_t *ref = &expression->reference;
1883 declaration_t *declaration = ref->declaration;
1884 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1885 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1886 set_value(declaration->v.value_number, value);
1892 addr = expression_to_addr(expression);
1894 type_t *type = skip_typeref(expression->base.type);
1896 if (expression->kind == EXPR_SELECT) {
1897 const select_expression_t *select = &expression->select;
1899 declaration_t *declaration = select->compound_entry;
1900 if (declaration->type->kind == TYPE_BITFIELD) {
1901 ir_entity *entity = select->compound_entry->v.entity;
1903 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1904 bitfield_store_to_firm(dbgi, entity, addr, value, set_volatile);
1909 assign_value(dbgi, addr, type, value);
1912 static void set_value_for_expression(const expression_t *expression,
1915 set_value_for_expression_addr(expression, value, NULL);
1918 static ir_node *get_value_from_lvalue(const expression_t *expression,
1921 if (expression->kind == EXPR_REFERENCE) {
1922 const reference_expression_t *ref = &expression->reference;
1924 declaration_t *declaration = ref->declaration;
1925 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1926 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1927 assert(addr == NULL);
1928 ir_mode *mode = get_ir_mode(expression->base.type);
1929 return get_value(declaration->v.value_number, mode);
1933 assert(addr != NULL);
1934 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1937 if (expression->kind == EXPR_SELECT &&
1938 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1939 value = bitfield_extract_to_firm(&expression->select, addr);
1941 value = deref_address(dbgi, expression->base.type, addr);
1948 static ir_node *create_incdec(const unary_expression_t *expression)
1950 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1951 const expression_t *value_expr = expression->value;
1952 ir_node *addr = expression_to_addr(value_expr);
1953 ir_node *value = get_value_from_lvalue(value_expr, addr);
1955 type_t *type = skip_typeref(expression->base.type);
1956 ir_mode *mode = get_ir_mode(expression->base.type);
1959 if (is_type_pointer(type)) {
1960 pointer_type_t *pointer_type = &type->pointer;
1961 offset = get_type_size(pointer_type->points_to);
1963 assert(is_type_arithmetic(type));
1964 offset = new_Const(mode, get_mode_one(mode));
1968 ir_node *store_value;
1969 switch(expression->base.kind) {
1970 case EXPR_UNARY_POSTFIX_INCREMENT:
1972 store_value = new_d_Add(dbgi, value, offset, mode);
1974 case EXPR_UNARY_POSTFIX_DECREMENT:
1976 store_value = new_d_Sub(dbgi, value, offset, mode);
1978 case EXPR_UNARY_PREFIX_INCREMENT:
1979 result = new_d_Add(dbgi, value, offset, mode);
1980 store_value = result;
1982 case EXPR_UNARY_PREFIX_DECREMENT:
1983 result = new_d_Sub(dbgi, value, offset, mode);
1984 store_value = result;
1987 panic("no incdec expr in create_incdec");
1990 set_value_for_expression_addr(value_expr, store_value, addr);
1995 static bool is_local_variable(expression_t *expression)
1997 if (expression->kind != EXPR_REFERENCE)
1999 reference_expression_t *ref_expr = &expression->reference;
2000 declaration_t *declaration = ref_expr->declaration;
2001 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
2004 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2007 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2008 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2009 case EXPR_BINARY_NOTEQUAL:
2010 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2011 case EXPR_BINARY_ISLESS:
2012 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2013 case EXPR_BINARY_ISLESSEQUAL:
2014 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2015 case EXPR_BINARY_ISGREATER:
2016 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2017 case EXPR_BINARY_ISGREATEREQUAL:
2018 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2019 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2024 panic("trying to get pn_Cmp from non-comparison binexpr type");
2028 * Handle the assume optimizer hint: check if a Confirm
2029 * node can be created.
2031 * @param dbi debug info
2032 * @param expr the IL assume expression
2034 * we support here only some simple cases:
2039 static ir_node *handle_assume_compare(dbg_info *dbi,
2040 const binary_expression_t *expression)
2042 expression_t *op1 = expression->left;
2043 expression_t *op2 = expression->right;
2044 declaration_t *var2, *var = NULL;
2045 ir_node *res = NULL;
2048 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2050 if (is_local_variable(op1) && is_local_variable(op2)) {
2051 var = op1->reference.declaration;
2052 var2 = op2->reference.declaration;
2054 type_t *const type = skip_typeref(var->type);
2055 ir_mode *const mode = get_ir_mode(type);
2057 ir_node *const irn1 = get_value(var->v.value_number, mode);
2058 ir_node *const irn2 = get_value(var2->v.value_number, mode);
2060 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2061 set_value(var2->v.value_number, res);
2063 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2064 set_value(var->v.value_number, res);
2070 if (is_local_variable(op1) && is_constant_expression(op2)) {
2071 var = op1->reference.declaration;
2073 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2074 cmp_val = get_inversed_pnc(cmp_val);
2075 var = op2->reference.declaration;
2080 type_t *const type = skip_typeref(var->type);
2081 ir_mode *const mode = get_ir_mode(type);
2083 res = get_value(var->v.value_number, mode);
2084 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2085 set_value(var->v.value_number, res);
2091 * Handle the assume optimizer hint.
2093 * @param dbi debug info
2094 * @param expr the IL assume expression
2096 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2097 switch(expression->kind) {
2098 case EXPR_BINARY_EQUAL:
2099 case EXPR_BINARY_NOTEQUAL:
2100 case EXPR_BINARY_LESS:
2101 case EXPR_BINARY_LESSEQUAL:
2102 case EXPR_BINARY_GREATER:
2103 case EXPR_BINARY_GREATEREQUAL:
2104 return handle_assume_compare(dbi, &expression->binary);
2110 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2112 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2113 type_t *type = skip_typeref(expression->base.type);
2115 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2116 return expression_to_addr(expression->value);
2118 const expression_t *value = expression->value;
2120 switch(expression->base.kind) {
2121 case EXPR_UNARY_NEGATE: {
2122 ir_node *value_node = expression_to_firm(value);
2123 ir_mode *mode = get_ir_mode(type);
2124 return new_d_Minus(dbgi, value_node, mode);
2126 case EXPR_UNARY_PLUS:
2127 return expression_to_firm(value);
2128 case EXPR_UNARY_BITWISE_NEGATE: {
2129 ir_node *value_node = expression_to_firm(value);
2130 ir_mode *mode = get_ir_mode(type);
2131 return new_d_Not(dbgi, value_node, mode);
2133 case EXPR_UNARY_NOT: {
2134 ir_node *value_node = _expression_to_firm(value);
2135 value_node = create_conv(dbgi, value_node, mode_b);
2136 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2139 case EXPR_UNARY_DEREFERENCE: {
2140 ir_node *value_node = expression_to_firm(value);
2141 type_t *value_type = skip_typeref(value->base.type);
2142 assert(is_type_pointer(value_type));
2143 type_t *points_to = value_type->pointer.points_to;
2144 return deref_address(dbgi, points_to, value_node);
2146 case EXPR_UNARY_POSTFIX_INCREMENT:
2147 case EXPR_UNARY_POSTFIX_DECREMENT:
2148 case EXPR_UNARY_PREFIX_INCREMENT:
2149 case EXPR_UNARY_PREFIX_DECREMENT:
2150 return create_incdec(expression);
2151 case EXPR_UNARY_CAST: {
2152 ir_node *value_node = expression_to_firm(value);
2153 if (is_type_scalar(type)) {
2154 ir_mode *mode = get_ir_mode(type);
2155 ir_node *node = create_conv(dbgi, value_node, mode);
2156 node = do_strict_conv(dbgi, node);
2159 /* make sure firm type is constructed */
2160 (void) get_ir_type(type);
2164 case EXPR_UNARY_CAST_IMPLICIT: {
2165 ir_node *value_node = expression_to_firm(value);
2166 if (is_type_scalar(type)) {
2167 ir_mode *mode = get_ir_mode(type);
2168 return create_conv(dbgi, value_node, mode);
2173 case EXPR_UNARY_ASSUME:
2174 if (firm_opt.confirm)
2175 return handle_assume(dbgi, value);
2182 panic("invalid UNEXPR type found");
2186 * produces a 0/1 depending of the value of a mode_b node
2188 static ir_node *produce_condition_result(const expression_t *expression,
2191 ir_mode *mode = get_ir_mode(expression->base.type);
2192 ir_node *cur_block = get_cur_block();
2194 ir_node *one_block = new_immBlock();
2195 ir_node *one = new_Const(mode, get_mode_one(mode));
2196 ir_node *jmp_one = new_d_Jmp(dbgi);
2198 ir_node *zero_block = new_immBlock();
2199 ir_node *zero = new_Const(mode, get_mode_null(mode));
2200 ir_node *jmp_zero = new_d_Jmp(dbgi);
2202 set_cur_block(cur_block);
2203 create_condition_evaluation(expression, one_block, zero_block);
2204 mature_immBlock(one_block);
2205 mature_immBlock(zero_block);
2207 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2208 new_Block(2, in_cf);
2210 ir_node *in[2] = { one, zero };
2211 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2216 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2217 ir_node *value, type_t *type)
2219 pointer_type_t *const pointer_type = &type->pointer;
2220 type_t *const points_to = skip_typeref(pointer_type->points_to);
2221 unsigned elem_size = get_type_size_const(points_to);
2223 /* gcc extension: allow arithmetic with void * and function * */
2224 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2225 is_type_function(points_to)) {
2229 assert(elem_size >= 1);
2233 value = create_conv(dbgi, value, mode_int);
2234 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2235 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2239 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2240 ir_node *left, ir_node *right)
2243 type_t *type_left = skip_typeref(expression->left->base.type);
2244 type_t *type_right = skip_typeref(expression->right->base.type);
2246 expression_kind_t kind = expression->base.kind;
2249 case EXPR_BINARY_SHIFTLEFT:
2250 case EXPR_BINARY_SHIFTRIGHT:
2251 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2252 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2253 mode = get_irn_mode(left);
2254 right = create_conv(dbgi, right, mode_uint);
2257 case EXPR_BINARY_SUB:
2258 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2259 const pointer_type_t *const ptr_type = &type_left->pointer;
2261 mode = get_ir_mode(expression->base.type);
2262 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2263 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2264 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2265 ir_node *const no_mem = new_NoMem();
2266 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2267 mode, op_pin_state_floats);
2268 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2271 case EXPR_BINARY_SUB_ASSIGN:
2272 if (is_type_pointer(type_left)) {
2273 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2274 mode = get_ir_mode(type_left);
2279 case EXPR_BINARY_ADD:
2280 case EXPR_BINARY_ADD_ASSIGN:
2281 if (is_type_pointer(type_left)) {
2282 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2283 mode = get_ir_mode(type_left);
2285 } else if (is_type_pointer(type_right)) {
2286 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2287 mode = get_ir_mode(type_right);
2294 mode = get_irn_mode(right);
2295 left = create_conv(dbgi, left, mode);
2300 case EXPR_BINARY_ADD_ASSIGN:
2301 case EXPR_BINARY_ADD:
2302 return new_d_Add(dbgi, left, right, mode);
2303 case EXPR_BINARY_SUB_ASSIGN:
2304 case EXPR_BINARY_SUB:
2305 return new_d_Sub(dbgi, left, right, mode);
2306 case EXPR_BINARY_MUL_ASSIGN:
2307 case EXPR_BINARY_MUL:
2308 return new_d_Mul(dbgi, left, right, mode);
2309 case EXPR_BINARY_BITWISE_AND:
2310 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2311 return new_d_And(dbgi, left, right, mode);
2312 case EXPR_BINARY_BITWISE_OR:
2313 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2314 return new_d_Or(dbgi, left, right, mode);
2315 case EXPR_BINARY_BITWISE_XOR:
2316 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2317 return new_d_Eor(dbgi, left, right, mode);
2318 case EXPR_BINARY_SHIFTLEFT:
2319 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2320 return new_d_Shl(dbgi, left, right, mode);
2321 case EXPR_BINARY_SHIFTRIGHT:
2322 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2323 if (mode_is_signed(mode)) {
2324 return new_d_Shrs(dbgi, left, right, mode);
2326 return new_d_Shr(dbgi, left, right, mode);
2328 case EXPR_BINARY_DIV:
2329 case EXPR_BINARY_DIV_ASSIGN: {
2330 ir_node *pin = new_Pin(new_NoMem());
2333 if (mode_is_float(mode)) {
2334 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2335 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2337 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2338 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2342 case EXPR_BINARY_MOD:
2343 case EXPR_BINARY_MOD_ASSIGN: {
2344 ir_node *pin = new_Pin(new_NoMem());
2345 assert(!mode_is_float(mode));
2346 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2347 op_pin_state_floats);
2348 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2352 panic("unexpected expression kind");
2356 static ir_node *create_lazy_op(const binary_expression_t *expression)
2358 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2359 type_t *type = expression->base.type;
2360 ir_mode *mode = get_ir_mode(type);
2362 if (is_constant_expression(expression->left)) {
2363 long val = fold_constant(expression->left);
2364 expression_kind_t ekind = expression->base.kind;
2365 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2366 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2367 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2368 return expression_to_firm(expression->right);
2370 return new_Const(mode, get_mode_one(mode));
2374 return produce_condition_result((const expression_t*) expression, dbgi);
2377 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2378 ir_node *right, ir_mode *mode);
2380 static ir_node *create_assign_binop(const binary_expression_t *expression)
2382 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2383 const expression_t *left_expr = expression->left;
2384 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2385 ir_node *right = expression_to_firm(expression->right);
2386 ir_node *left_addr = expression_to_addr(left_expr);
2387 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2388 ir_node *result = create_op(dbgi, expression, left, right);
2390 result = create_conv(dbgi, result, left_mode);
2391 result = do_strict_conv(dbgi, result);
2393 set_value_for_expression_addr(left_expr, result, left_addr);
2398 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2400 expression_kind_t kind = expression->base.kind;
2403 case EXPR_BINARY_EQUAL:
2404 case EXPR_BINARY_NOTEQUAL:
2405 case EXPR_BINARY_LESS:
2406 case EXPR_BINARY_LESSEQUAL:
2407 case EXPR_BINARY_GREATER:
2408 case EXPR_BINARY_GREATEREQUAL:
2409 case EXPR_BINARY_ISGREATER:
2410 case EXPR_BINARY_ISGREATEREQUAL:
2411 case EXPR_BINARY_ISLESS:
2412 case EXPR_BINARY_ISLESSEQUAL:
2413 case EXPR_BINARY_ISLESSGREATER:
2414 case EXPR_BINARY_ISUNORDERED: {
2415 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2416 ir_node *left = expression_to_firm(expression->left);
2417 ir_node *right = expression_to_firm(expression->right);
2418 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2419 long pnc = get_pnc(kind, expression->left->base.type);
2420 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2423 case EXPR_BINARY_ASSIGN: {
2424 ir_node *addr = expression_to_addr(expression->left);
2425 ir_node *right = expression_to_firm(expression->right);
2426 set_value_for_expression_addr(expression->left, right, addr);
2430 case EXPR_BINARY_ADD:
2431 case EXPR_BINARY_SUB:
2432 case EXPR_BINARY_MUL:
2433 case EXPR_BINARY_DIV:
2434 case EXPR_BINARY_MOD:
2435 case EXPR_BINARY_BITWISE_AND:
2436 case EXPR_BINARY_BITWISE_OR:
2437 case EXPR_BINARY_BITWISE_XOR:
2438 case EXPR_BINARY_SHIFTLEFT:
2439 case EXPR_BINARY_SHIFTRIGHT:
2441 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2442 ir_node *left = expression_to_firm(expression->left);
2443 ir_node *right = expression_to_firm(expression->right);
2444 return create_op(dbgi, expression, left, right);
2446 case EXPR_BINARY_LOGICAL_AND:
2447 case EXPR_BINARY_LOGICAL_OR:
2448 return create_lazy_op(expression);
2449 case EXPR_BINARY_COMMA:
2450 /* create side effects of left side */
2451 (void) expression_to_firm(expression->left);
2452 return _expression_to_firm(expression->right);
2454 case EXPR_BINARY_ADD_ASSIGN:
2455 case EXPR_BINARY_SUB_ASSIGN:
2456 case EXPR_BINARY_MUL_ASSIGN:
2457 case EXPR_BINARY_MOD_ASSIGN:
2458 case EXPR_BINARY_DIV_ASSIGN:
2459 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2460 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2461 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2462 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2463 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2464 return create_assign_binop(expression);
2465 case EXPR_BINARY_BUILTIN_EXPECT:
2466 return _expression_to_firm(expression->left);
2468 panic("TODO binexpr type");
2472 static ir_node *array_access_addr(const array_access_expression_t *expression)
2474 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2475 ir_node *base_addr = expression_to_firm(expression->array_ref);
2476 ir_node *offset = expression_to_firm(expression->index);
2478 type_t *offset_type = skip_typeref(expression->index->base.type);
2480 if (is_type_signed(offset_type)) {
2481 mode = get_ir_mode(type_ssize_t);
2483 mode = get_ir_mode(type_size_t);
2485 offset = create_conv(dbgi, offset, mode);
2487 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2488 assert(is_type_pointer(ref_type));
2489 pointer_type_t *pointer_type = &ref_type->pointer;
2491 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2492 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2493 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2495 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2500 static ir_node *array_access_to_firm(
2501 const array_access_expression_t *expression)
2503 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2504 ir_node *addr = array_access_addr(expression);
2505 type_t *type = revert_automatic_type_conversion(
2506 (const expression_t*) expression);
2507 type = skip_typeref(type);
2509 return deref_address(dbgi, type, addr);
2512 static long get_offsetof_offset(const offsetof_expression_t *expression)
2514 type_t *orig_type = expression->type;
2517 designator_t *designator = expression->designator;
2518 for( ; designator != NULL; designator = designator->next) {
2519 type_t *type = skip_typeref(orig_type);
2520 /* be sure the type is constructed */
2521 (void) get_ir_type(type);
2523 if (designator->symbol != NULL) {
2524 assert(is_type_compound(type));
2525 symbol_t *symbol = designator->symbol;
2527 declaration_t *declaration = type->compound.declaration;
2528 declaration_t *iter = declaration->scope.declarations;
2529 for( ; iter != NULL; iter = iter->next) {
2530 if (iter->symbol == symbol) {
2534 assert(iter != NULL);
2536 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2537 offset += get_entity_offset(iter->v.entity);
2539 orig_type = iter->type;
2541 expression_t *array_index = designator->array_index;
2542 assert(designator->array_index != NULL);
2543 assert(is_type_array(type));
2545 long index = fold_constant(array_index);
2546 ir_type *arr_type = get_ir_type(type);
2547 ir_type *elem_type = get_array_element_type(arr_type);
2548 long elem_size = get_type_size_bytes(elem_type);
2550 offset += index * elem_size;
2552 orig_type = type->array.element_type;
2559 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2561 ir_mode *mode = get_ir_mode(expression->base.type);
2562 long offset = get_offsetof_offset(expression);
2563 tarval *tv = new_tarval_from_long(offset, mode);
2564 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2566 return new_d_Const(dbgi, mode, tv);
2569 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2570 ir_entity *entity, type_t *type);
2572 static ir_node *compound_literal_to_firm(
2573 const compound_literal_expression_t *expression)
2575 type_t *type = expression->type;
2577 /* create an entity on the stack */
2578 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2580 ident *const id = id_unique("CompLit.%u");
2581 ir_type *const irtype = get_ir_type(type);
2582 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2583 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2584 set_entity_ld_ident(entity, id);
2586 set_entity_variability(entity, variability_uninitialized);
2588 /* create initialisation code */
2589 initializer_t *initializer = expression->initializer;
2590 create_local_initializer(initializer, dbgi, entity, type);
2592 /* create a sel for the compound literal address */
2593 ir_node *frame = get_local_frame(entity);
2594 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2599 * Transform a sizeof expression into Firm code.
2601 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2603 type_t *type = expression->type;
2605 type = expression->tp_expression->base.type;
2606 assert(type != NULL);
2609 type = skip_typeref(type);
2610 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2611 if (is_type_array(type) && type->array.is_vla
2612 && expression->tp_expression != NULL) {
2613 expression_to_firm(expression->tp_expression);
2616 return get_type_size(type);
2620 * Transform an alignof expression into Firm code.
2622 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2624 type_t *type = expression->type;
2626 /* beware: if expression is a variable reference, return the
2627 alignment of the variable. */
2628 const expression_t *tp_expression = expression->tp_expression;
2629 const declaration_t *declaration = expr_is_variable(tp_expression);
2630 if (declaration != NULL) {
2631 /* TODO: get the alignment of this variable. */
2633 type = tp_expression->base.type;
2634 assert(type != NULL);
2637 ir_mode *const mode = get_ir_mode(expression->base.type);
2638 symconst_symbol sym;
2639 sym.type_p = get_ir_type(type);
2640 return new_SymConst(mode, sym, symconst_type_align);
2643 static void init_ir_types(void);
2645 long fold_constant(const expression_t *expression)
2647 assert(is_type_valid(skip_typeref(expression->base.type)));
2649 bool constant_folding_old = constant_folding;
2650 constant_folding = true;
2654 assert(is_constant_expression(expression));
2656 ir_graph *old_current_ir_graph = current_ir_graph;
2657 if (current_ir_graph == NULL) {
2658 current_ir_graph = get_const_code_irg();
2661 ir_node *cnst = expression_to_firm(expression);
2662 current_ir_graph = old_current_ir_graph;
2664 if (!is_Const(cnst)) {
2665 panic("couldn't fold constant\n");
2668 tarval *tv = get_Const_tarval(cnst);
2669 if (!tarval_is_long(tv)) {
2670 panic("result of constant folding is not integer\n");
2673 constant_folding = constant_folding_old;
2675 return get_tarval_long(tv);
2678 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2680 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2682 /* first try to fold a constant condition */
2683 if (is_constant_expression(expression->condition)) {
2684 long val = fold_constant(expression->condition);
2686 expression_t *true_expression = expression->true_expression;
2687 if (true_expression == NULL)
2688 true_expression = expression->condition;
2689 return expression_to_firm(true_expression);
2691 return expression_to_firm(expression->false_expression);
2695 ir_node *cur_block = get_cur_block();
2697 /* create the true block */
2698 ir_node *true_block = new_immBlock();
2700 ir_node *true_val = expression->true_expression != NULL ?
2701 expression_to_firm(expression->true_expression) : NULL;
2702 ir_node *true_jmp = new_Jmp();
2704 /* create the false block */
2705 ir_node *false_block = new_immBlock();
2707 ir_node *false_val = expression_to_firm(expression->false_expression);
2708 ir_node *false_jmp = new_Jmp();
2710 /* create the condition evaluation */
2711 set_cur_block(cur_block);
2712 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2713 if (expression->true_expression == NULL) {
2714 if (cond_expr != NULL) {
2715 true_val = cond_expr;
2717 /* Condition ended with a short circuit (&&, ||, !) operation.
2718 * Generate a "1" as value for the true branch. */
2719 ir_mode *const mode = mode_Is;
2720 true_val = new_Const(mode, get_mode_one(mode));
2723 mature_immBlock(true_block);
2724 mature_immBlock(false_block);
2726 /* create the common block */
2727 ir_node *in_cf[2] = { true_jmp, false_jmp };
2728 new_Block(2, in_cf);
2730 /* TODO improve static semantics, so either both or no values are NULL */
2731 if (true_val == NULL || false_val == NULL)
2734 ir_node *in[2] = { true_val, false_val };
2735 ir_mode *mode = get_irn_mode(true_val);
2736 assert(get_irn_mode(false_val) == mode);
2737 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2743 * Returns an IR-node representing the address of a field.
2745 static ir_node *select_addr(const select_expression_t *expression)
2747 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2749 ir_node *compound_addr = expression_to_firm(expression->compound);
2751 /* make sure the type is constructed */
2752 type_t *type = skip_typeref(expression->compound->base.type);
2753 if (is_type_pointer(type)) {
2754 type = type->pointer.points_to;
2756 (void) get_ir_type(type);
2758 declaration_t *entry = expression->compound_entry;
2759 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2760 ir_entity *entity = entry->v.entity;
2762 assert(entity != NULL);
2764 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2769 static ir_node *select_to_firm(const select_expression_t *expression)
2771 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2772 ir_node *addr = select_addr(expression);
2773 type_t *type = revert_automatic_type_conversion(
2774 (const expression_t*) expression);
2775 type = skip_typeref(type);
2777 declaration_t *entry = expression->compound_entry;
2778 type_t *entry_type = skip_typeref(entry->type);
2780 if (entry_type->kind == TYPE_BITFIELD) {
2781 return bitfield_extract_to_firm(expression, addr);
2784 return deref_address(dbgi, type, addr);
2787 /* Values returned by __builtin_classify_type. */
2788 typedef enum gcc_type_class
2794 enumeral_type_class,
2797 reference_type_class,
2801 function_type_class,
2812 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2814 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2820 const atomic_type_t *const atomic_type = &type->atomic;
2821 switch (atomic_type->akind) {
2822 /* should not be reached */
2823 case ATOMIC_TYPE_INVALID:
2827 /* gcc cannot do that */
2828 case ATOMIC_TYPE_VOID:
2829 tc = void_type_class;
2832 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2833 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2834 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2835 case ATOMIC_TYPE_SHORT:
2836 case ATOMIC_TYPE_USHORT:
2837 case ATOMIC_TYPE_INT:
2838 case ATOMIC_TYPE_UINT:
2839 case ATOMIC_TYPE_LONG:
2840 case ATOMIC_TYPE_ULONG:
2841 case ATOMIC_TYPE_LONGLONG:
2842 case ATOMIC_TYPE_ULONGLONG:
2843 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2844 tc = integer_type_class;
2847 case ATOMIC_TYPE_FLOAT:
2848 case ATOMIC_TYPE_DOUBLE:
2849 case ATOMIC_TYPE_LONG_DOUBLE:
2850 tc = real_type_class;
2853 panic("Unexpected atomic type in classify_type_to_firm().");
2856 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2857 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2858 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2859 case TYPE_ARRAY: /* gcc handles this as pointer */
2860 case TYPE_FUNCTION: /* gcc handles this as pointer */
2861 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2862 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2863 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2865 /* gcc handles this as integer */
2866 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2869 /* typedef/typeof should be skipped already */
2876 panic("unexpected TYPE classify_type_to_firm().");
2879 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2880 ir_mode *const mode = mode_int;
2881 tarval *const tv = new_tarval_from_long(tc, mode);
2882 return new_d_Const(dbgi, mode, tv);
2885 static ir_node *function_name_to_firm(
2886 const funcname_expression_t *const expr)
2888 switch(expr->kind) {
2889 case FUNCNAME_FUNCTION:
2890 case FUNCNAME_PRETTY_FUNCTION:
2891 case FUNCNAME_FUNCDNAME:
2892 if (current_function_name == NULL) {
2893 const source_position_t *const src_pos = &expr->base.source_position;
2894 const char *const name = current_function_decl->symbol->string;
2895 const string_t string = { name, strlen(name) + 1 };
2896 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2898 return current_function_name;
2899 case FUNCNAME_FUNCSIG:
2900 if (current_funcsig == NULL) {
2901 const source_position_t *const src_pos = &expr->base.source_position;
2902 ir_entity *ent = get_irg_entity(current_ir_graph);
2903 const char *const name = get_entity_ld_name(ent);
2904 const string_t string = { name, strlen(name) + 1 };
2905 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2907 return current_funcsig;
2909 panic("Unsupported function name");
2912 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2914 statement_t *statement = expr->statement;
2916 assert(statement->kind == STATEMENT_COMPOUND);
2917 return compound_statement_to_firm(&statement->compound);
2920 static ir_node *va_start_expression_to_firm(
2921 const va_start_expression_t *const expr)
2923 ir_type *const method_type = get_ir_type(current_function_decl->type);
2924 int const n = get_method_n_params(method_type) - 1;
2925 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2926 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2927 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2928 ir_node *const no_mem = new_NoMem();
2929 ir_node *const arg_sel =
2930 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2932 ir_node *const cnst = get_type_size(expr->parameter->type);
2933 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2934 set_value_for_expression(expr->ap, add);
2939 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2941 type_t *const type = expr->base.type;
2942 expression_t *const ap_expr = expr->ap;
2943 ir_node *const ap_addr = expression_to_addr(ap_expr);
2944 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2945 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2946 ir_node *const res = deref_address(dbgi, type, ap);
2948 ir_node *const cnst = get_type_size(expr->base.type);
2949 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2951 set_value_for_expression_addr(ap_expr, add, ap_addr);
2956 static ir_node *dereference_addr(const unary_expression_t *const expression)
2958 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2959 return expression_to_firm(expression->value);
2963 * Returns a IR-node representing an lvalue of the given expression.
2965 static ir_node *expression_to_addr(const expression_t *expression)
2967 switch(expression->kind) {
2968 case EXPR_REFERENCE:
2969 return reference_addr(&expression->reference);
2970 case EXPR_ARRAY_ACCESS:
2971 return array_access_addr(&expression->array_access);
2973 return select_addr(&expression->select);
2975 return call_expression_to_firm(&expression->call);
2976 case EXPR_UNARY_DEREFERENCE: {
2977 return dereference_addr(&expression->unary);
2982 panic("trying to get address of non-lvalue");
2985 static ir_node *builtin_constant_to_firm(
2986 const builtin_constant_expression_t *expression)
2988 ir_mode *mode = get_ir_mode(expression->base.type);
2991 if (is_constant_expression(expression->value)) {
2996 return new_Const_long(mode, v);
2999 static ir_node *builtin_prefetch_to_firm(
3000 const builtin_prefetch_expression_t *expression)
3002 ir_node *adr = expression_to_firm(expression->adr);
3003 /* no Firm support for prefetch yet */
3008 static ir_node *get_label_block(declaration_t *label)
3010 assert(label->namespc == NAMESPACE_LABEL || label->namespc == NAMESPACE_LOCAL_LABEL);
3012 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3013 return label->v.block;
3015 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3017 /* beware: might be called from create initializer with current_ir_graph
3018 * set to const_code_irg. */
3019 ir_graph *rem = current_ir_graph;
3020 current_ir_graph = current_function;
3022 ir_node *old_cur_block = get_cur_block();
3023 ir_node *block = new_immBlock();
3024 set_cur_block(old_cur_block);
3026 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3027 label->v.block = block;
3029 ARR_APP1(declaration_t *, all_labels, label);
3031 current_ir_graph = rem;
3036 * Pointer to a label. This is used for the
3037 * GNU address-of-label extension.
3039 static ir_node *label_address_to_firm(
3040 const label_address_expression_t *label)
3042 ir_node *block = get_label_block(label->declaration);
3043 ir_label_t nr = get_Block_label(block);
3046 nr = get_irp_next_label_nr();
3047 set_Block_label(block, nr);
3049 symconst_symbol value;
3051 return new_SymConst(mode_P_code, value, symconst_label);
3055 * creates firm nodes for an expression. The difference between this function
3056 * and expression_to_firm is, that this version might produce mode_b nodes
3057 * instead of mode_Is.
3059 static ir_node *_expression_to_firm(const expression_t *expression)
3062 if (!constant_folding) {
3063 assert(!expression->base.transformed);
3064 ((expression_t*) expression)->base.transformed = true;
3068 switch (expression->kind) {
3069 case EXPR_CHARACTER_CONSTANT:
3070 return character_constant_to_firm(&expression->conste);
3071 case EXPR_WIDE_CHARACTER_CONSTANT:
3072 return wide_character_constant_to_firm(&expression->conste);
3074 return const_to_firm(&expression->conste);
3075 case EXPR_STRING_LITERAL:
3076 return string_literal_to_firm(&expression->string);
3077 case EXPR_WIDE_STRING_LITERAL:
3078 return wide_string_literal_to_firm(&expression->wide_string);
3079 case EXPR_REFERENCE:
3080 return reference_expression_to_firm(&expression->reference);
3082 return call_expression_to_firm(&expression->call);
3084 return unary_expression_to_firm(&expression->unary);
3086 return binary_expression_to_firm(&expression->binary);
3087 case EXPR_ARRAY_ACCESS:
3088 return array_access_to_firm(&expression->array_access);
3090 return sizeof_to_firm(&expression->typeprop);
3092 return alignof_to_firm(&expression->typeprop);
3093 case EXPR_CONDITIONAL:
3094 return conditional_to_firm(&expression->conditional);
3096 return select_to_firm(&expression->select);
3097 case EXPR_CLASSIFY_TYPE:
3098 return classify_type_to_firm(&expression->classify_type);
3100 return function_name_to_firm(&expression->funcname);
3101 case EXPR_STATEMENT:
3102 return statement_expression_to_firm(&expression->statement);
3104 return va_start_expression_to_firm(&expression->va_starte);
3106 return va_arg_expression_to_firm(&expression->va_arge);
3107 case EXPR_BUILTIN_SYMBOL:
3108 panic("unimplemented expression found");
3109 case EXPR_BUILTIN_CONSTANT_P:
3110 return builtin_constant_to_firm(&expression->builtin_constant);
3111 case EXPR_BUILTIN_PREFETCH:
3112 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3114 return offsetof_to_firm(&expression->offsetofe);
3115 case EXPR_COMPOUND_LITERAL:
3116 return compound_literal_to_firm(&expression->compound_literal);
3117 case EXPR_LABEL_ADDRESS:
3118 return label_address_to_firm(&expression->label_address);
3124 panic("invalid expression found");
3127 static bool produces_mode_b(const expression_t *expression)
3129 switch (expression->kind) {
3130 case EXPR_BINARY_EQUAL:
3131 case EXPR_BINARY_NOTEQUAL:
3132 case EXPR_BINARY_LESS:
3133 case EXPR_BINARY_LESSEQUAL:
3134 case EXPR_BINARY_GREATER:
3135 case EXPR_BINARY_GREATEREQUAL:
3136 case EXPR_BINARY_ISGREATER:
3137 case EXPR_BINARY_ISGREATEREQUAL:
3138 case EXPR_BINARY_ISLESS:
3139 case EXPR_BINARY_ISLESSEQUAL:
3140 case EXPR_BINARY_ISLESSGREATER:
3141 case EXPR_BINARY_ISUNORDERED:
3142 case EXPR_UNARY_NOT:
3145 case EXPR_BINARY_BUILTIN_EXPECT:
3146 return produces_mode_b(expression->binary.left);
3147 case EXPR_BINARY_COMMA:
3148 return produces_mode_b(expression->binary.right);
3155 static ir_node *expression_to_firm(const expression_t *expression)
3157 if (!produces_mode_b(expression)) {
3158 ir_node *res = _expression_to_firm(expression);
3159 assert(res == NULL || get_irn_mode(res) != mode_b);
3163 if (is_constant_expression(expression)) {
3164 ir_node *res = _expression_to_firm(expression);
3165 ir_mode *mode = get_ir_mode(expression->base.type);
3166 assert(is_Const(res));
3167 if (is_Const_null(res)) {
3168 return new_Const_long(mode, 0);
3170 return new_Const_long(mode, 1);
3174 /* we have to produce a 0/1 from the mode_b expression */
3175 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3176 return produce_condition_result(expression, dbgi);
3180 * create a short-circuit expression evaluation that tries to construct
3181 * efficient control flow structures for &&, || and ! expressions
3183 static ir_node *create_condition_evaluation(const expression_t *expression,
3184 ir_node *true_block,
3185 ir_node *false_block)
3187 switch(expression->kind) {
3188 case EXPR_UNARY_NOT: {
3189 const unary_expression_t *unary_expression = &expression->unary;
3190 create_condition_evaluation(unary_expression->value, false_block,
3194 case EXPR_BINARY_LOGICAL_AND: {
3195 const binary_expression_t *binary_expression = &expression->binary;
3197 ir_node *cur_block = get_cur_block();
3198 ir_node *extra_block = new_immBlock();
3199 set_cur_block(cur_block);
3200 create_condition_evaluation(binary_expression->left, extra_block,
3202 mature_immBlock(extra_block);
3203 set_cur_block(extra_block);
3204 create_condition_evaluation(binary_expression->right, true_block,
3208 case EXPR_BINARY_LOGICAL_OR: {
3209 const binary_expression_t *binary_expression = &expression->binary;
3211 ir_node *cur_block = get_cur_block();
3212 ir_node *extra_block = new_immBlock();
3213 set_cur_block(cur_block);
3214 create_condition_evaluation(binary_expression->left, true_block,
3216 mature_immBlock(extra_block);
3217 set_cur_block(extra_block);
3218 create_condition_evaluation(binary_expression->right, true_block,
3226 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3227 ir_node *cond_expr = _expression_to_firm(expression);
3228 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3229 ir_node *cond = new_d_Cond(dbgi, condition);
3230 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3231 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3233 /* set branch prediction info based on __builtin_expect */
3234 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3235 long cnst = fold_constant(expression->binary.right);
3236 cond_jmp_predicate pred;
3239 pred = COND_JMP_PRED_FALSE;
3241 pred = COND_JMP_PRED_TRUE;
3243 set_Cond_jmp_pred(cond, pred);
3246 add_immBlock_pred(true_block, true_proj);
3247 if (false_block != NULL) {
3248 add_immBlock_pred(false_block, false_proj);
3251 set_cur_block(NULL);
3257 static void create_declaration_entity(declaration_t *declaration,
3258 declaration_kind_t declaration_kind,
3259 ir_type *parent_type)
3261 type_t *const type = skip_typeref(declaration->type);
3262 if (is_type_function(type)) {
3263 (void) get_function_entity(declaration);
3267 ident *const id = new_id_from_str(declaration->symbol->string);
3268 ir_type *const irtype = get_ir_type(type);
3269 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3270 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3272 handle_gnu_attributes_ent(entity, declaration);
3274 declaration->declaration_kind = (unsigned char) declaration_kind;
3275 declaration->v.entity = entity;
3276 set_entity_variability(entity, variability_uninitialized);
3277 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3278 if (parent_type == get_tls_type())
3279 set_entity_allocation(entity, allocation_automatic);
3280 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3281 set_entity_allocation(entity, allocation_static);
3283 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3284 set_entity_volatility(entity, volatility_is_volatile);
3289 typedef struct type_path_entry_t type_path_entry_t;
3290 struct type_path_entry_t {
3292 ir_initializer_t *initializer;
3294 declaration_t *compound_entry;
3297 typedef struct type_path_t type_path_t;
3298 struct type_path_t {
3299 type_path_entry_t *path;
3304 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3306 size_t len = ARR_LEN(path->path);
3308 for(size_t i = 0; i < len; ++i) {
3309 const type_path_entry_t *entry = & path->path[i];
3311 type_t *type = skip_typeref(entry->type);
3312 if (is_type_compound(type)) {
3313 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3314 } else if (is_type_array(type)) {
3315 fprintf(stderr, "[%zu]", entry->index);
3317 fprintf(stderr, "-INVALID-");
3320 fprintf(stderr, " (");
3321 print_type(path->top_type);
3322 fprintf(stderr, ")");
3325 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3327 size_t len = ARR_LEN(path->path);
3329 return & path->path[len-1];
3332 static type_path_entry_t *append_to_type_path(type_path_t *path)
3334 size_t len = ARR_LEN(path->path);
3335 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3337 type_path_entry_t *result = & path->path[len];
3338 memset(result, 0, sizeof(result[0]));
3342 static size_t get_compound_size(const compound_type_t *type)
3344 declaration_t *declaration = type->declaration;
3345 declaration_t *member = declaration->scope.declarations;
3347 for( ; member != NULL; member = member->next) {
3350 /* TODO: cache results? */
3355 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3357 type_t *orig_top_type = path->top_type;
3358 type_t *top_type = skip_typeref(orig_top_type);
3360 assert(is_type_compound(top_type) || is_type_array(top_type));
3362 if (ARR_LEN(path->path) == 0) {
3365 type_path_entry_t *top = get_type_path_top(path);
3366 ir_initializer_t *initializer = top->initializer;
3367 return get_initializer_compound_value(initializer, top->index);
3371 static void descend_into_subtype(type_path_t *path)
3373 type_t *orig_top_type = path->top_type;
3374 type_t *top_type = skip_typeref(orig_top_type);
3376 assert(is_type_compound(top_type) || is_type_array(top_type));
3378 ir_initializer_t *initializer = get_initializer_entry(path);
3380 type_path_entry_t *top = append_to_type_path(path);
3381 top->type = top_type;
3385 if (is_type_compound(top_type)) {
3386 declaration_t *declaration = top_type->compound.declaration;
3387 declaration_t *entry = declaration->scope.declarations;
3389 top->compound_entry = entry;
3391 len = get_compound_size(&top_type->compound);
3393 path->top_type = entry->type;
3395 assert(is_type_array(top_type));
3396 assert(top_type->array.size > 0);
3399 path->top_type = top_type->array.element_type;
3400 len = top_type->array.size;
3402 if (initializer == NULL
3403 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3404 initializer = create_initializer_compound(len);
3405 /* we have to set the entry at the 2nd latest path entry... */
3406 size_t path_len = ARR_LEN(path->path);
3407 assert(path_len >= 1);
3409 type_path_entry_t *entry = & path->path[path_len-2];
3410 ir_initializer_t *tinitializer = entry->initializer;
3411 set_initializer_compound_value(tinitializer, entry->index,
3415 top->initializer = initializer;
3418 static void ascend_from_subtype(type_path_t *path)
3420 type_path_entry_t *top = get_type_path_top(path);
3422 path->top_type = top->type;
3424 size_t len = ARR_LEN(path->path);
3425 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3428 static void walk_designator(type_path_t *path, const designator_t *designator)
3430 /* designators start at current object type */
3431 ARR_RESIZE(type_path_entry_t, path->path, 1);
3433 for( ; designator != NULL; designator = designator->next) {
3434 type_path_entry_t *top = get_type_path_top(path);
3435 type_t *orig_type = top->type;
3436 type_t *type = skip_typeref(orig_type);
3438 if (designator->symbol != NULL) {
3439 assert(is_type_compound(type));
3441 symbol_t *symbol = designator->symbol;
3443 declaration_t *declaration = type->compound.declaration;
3444 declaration_t *iter = declaration->scope.declarations;
3445 for( ; iter != NULL; iter = iter->next, ++index) {
3446 if (iter->symbol == symbol) {
3450 assert(iter != NULL);
3452 top->type = orig_type;
3453 top->compound_entry = iter;
3455 orig_type = iter->type;
3457 expression_t *array_index = designator->array_index;
3458 assert(designator->array_index != NULL);
3459 assert(is_type_array(type));
3461 long index = fold_constant(array_index);
3464 if (type->array.size_constant) {
3465 long array_size = type->array.size;
3466 assert(index < array_size);
3470 top->type = orig_type;
3471 top->index = (size_t) index;
3472 orig_type = type->array.element_type;
3474 path->top_type = orig_type;
3476 if (designator->next != NULL) {
3477 descend_into_subtype(path);
3481 path->invalid = false;
3484 static void advance_current_object(type_path_t *path)
3486 if (path->invalid) {
3487 /* TODO: handle this... */
3488 panic("invalid initializer in ast2firm (excessive elements)");
3492 type_path_entry_t *top = get_type_path_top(path);
3494 type_t *type = skip_typeref(top->type);
3495 if (is_type_union(type)) {
3496 top->compound_entry = NULL;
3497 } else if (is_type_struct(type)) {
3498 declaration_t *entry = top->compound_entry;
3501 entry = entry->next;
3502 top->compound_entry = entry;
3503 if (entry != NULL) {
3504 path->top_type = entry->type;
3508 assert(is_type_array(type));
3511 if (!type->array.size_constant || top->index < type->array.size) {
3516 /* we're past the last member of the current sub-aggregate, try if we
3517 * can ascend in the type hierarchy and continue with another subobject */
3518 size_t len = ARR_LEN(path->path);
3521 ascend_from_subtype(path);
3522 advance_current_object(path);
3524 path->invalid = true;
3529 static ir_initializer_t *create_ir_initializer(
3530 const initializer_t *initializer, type_t *type);
3532 static ir_initializer_t *create_ir_initializer_value(
3533 const initializer_value_t *initializer)
3535 if (is_type_compound(initializer->value->base.type)) {
3536 panic("initializer creation for compounds not implemented yet");
3538 ir_node *value = expression_to_firm(initializer->value);
3539 return create_initializer_const(value);
3542 static ir_initializer_t *create_ir_initializer_list(
3543 const initializer_list_t *initializer, type_t *type)
3546 memset(&path, 0, sizeof(path));
3547 path.top_type = type;
3548 path.path = NEW_ARR_F(type_path_entry_t, 0);
3550 descend_into_subtype(&path);
3552 for(size_t i = 0; i < initializer->len; ++i) {
3553 const initializer_t *sub_initializer = initializer->initializers[i];
3555 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3556 walk_designator(&path, sub_initializer->designator.designator);
3560 if (sub_initializer->kind == INITIALIZER_VALUE) {
3561 /* we might have to descend into types until we're at a scalar
3564 type_t *orig_top_type = path.top_type;
3565 type_t *top_type = skip_typeref(orig_top_type);
3567 if (is_type_scalar(top_type))
3569 descend_into_subtype(&path);
3573 ir_initializer_t *sub_irinitializer
3574 = create_ir_initializer(sub_initializer, path.top_type);
3576 size_t path_len = ARR_LEN(path.path);
3577 assert(path_len >= 1);
3578 type_path_entry_t *entry = & path.path[path_len-1];
3579 ir_initializer_t *tinitializer = entry->initializer;
3580 set_initializer_compound_value(tinitializer, entry->index,
3583 advance_current_object(&path);
3586 assert(ARR_LEN(path.path) >= 1);
3587 ir_initializer_t *result = path.path[0].initializer;
3588 DEL_ARR_F(path.path);
3593 static ir_initializer_t *create_ir_initializer_string(
3594 const initializer_string_t *initializer, type_t *type)
3596 type = skip_typeref(type);
3598 size_t string_len = initializer->string.size;
3599 assert(type->kind == TYPE_ARRAY);
3600 assert(type->array.size_constant);
3601 size_t len = type->array.size;
3602 ir_initializer_t *irinitializer = create_initializer_compound(len);
3604 const char *string = initializer->string.begin;
3605 ir_mode *mode = get_ir_mode(type->array.element_type);
3607 for(size_t i = 0; i < len; ++i) {
3612 tarval *tv = new_tarval_from_long(c, mode);
3613 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3615 set_initializer_compound_value(irinitializer, i, char_initializer);
3618 return irinitializer;
3621 static ir_initializer_t *create_ir_initializer_wide_string(
3622 const initializer_wide_string_t *initializer, type_t *type)
3624 size_t string_len = initializer->string.size;
3625 assert(type->kind == TYPE_ARRAY);
3626 assert(type->array.size_constant);
3627 size_t len = type->array.size;
3628 ir_initializer_t *irinitializer = create_initializer_compound(len);
3630 const wchar_rep_t *string = initializer->string.begin;
3631 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3633 for(size_t i = 0; i < len; ++i) {
3635 if (i < string_len) {
3638 tarval *tv = new_tarval_from_long(c, mode);
3639 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3641 set_initializer_compound_value(irinitializer, i, char_initializer);
3644 return irinitializer;
3647 static ir_initializer_t *create_ir_initializer(
3648 const initializer_t *initializer, type_t *type)
3650 switch(initializer->kind) {
3651 case INITIALIZER_STRING:
3652 return create_ir_initializer_string(&initializer->string, type);
3654 case INITIALIZER_WIDE_STRING:
3655 return create_ir_initializer_wide_string(&initializer->wide_string,
3658 case INITIALIZER_LIST:
3659 return create_ir_initializer_list(&initializer->list, type);
3661 case INITIALIZER_VALUE:
3662 return create_ir_initializer_value(&initializer->value);
3664 case INITIALIZER_DESIGNATOR:
3665 panic("unexpected designator initializer found");
3667 panic("unknown initializer");
3670 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3673 if (is_atomic_type(type)) {
3674 ir_mode *mode = get_type_mode(type);
3675 tarval *zero = get_mode_null(mode);
3676 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3678 /* TODO: bitfields */
3679 ir_node *mem = get_store();
3680 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3681 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3684 assert(is_compound_type(type));
3687 if (is_Array_type(type)) {
3688 assert(has_array_upper_bound(type, 0));
3689 n_members = get_array_upper_bound_int(type, 0);
3691 n_members = get_compound_n_members(type);
3694 for(int i = 0; i < n_members; ++i) {
3697 if (is_Array_type(type)) {
3698 ir_entity *entity = get_array_element_entity(type);
3699 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3700 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3701 ir_node *in[1] = { cnst };
3702 irtype = get_array_element_type(type);
3703 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3705 ir_entity *member = get_compound_member(type, i);
3707 irtype = get_entity_type(member);
3708 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3711 create_dynamic_null_initializer(irtype, dbgi, addr);
3716 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3717 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3719 switch(get_initializer_kind(initializer)) {
3720 case IR_INITIALIZER_NULL: {
3721 create_dynamic_null_initializer(type, dbgi, base_addr);
3724 case IR_INITIALIZER_CONST: {
3725 ir_node *node = get_initializer_const_value(initializer);
3726 ir_mode *mode = get_irn_mode(node);
3727 ir_type *ent_type = get_entity_type(entity);
3729 /* is it a bitfield type? */
3730 if (is_Primitive_type(ent_type) &&
3731 get_primitive_base_type(ent_type) != NULL) {
3732 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3736 assert(get_type_mode(type) == mode);
3737 ir_node *mem = get_store();
3738 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3739 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3743 case IR_INITIALIZER_TARVAL: {
3744 tarval *tv = get_initializer_tarval_value(initializer);
3745 ir_mode *mode = get_tarval_mode(tv);
3746 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3747 ir_type *ent_type = get_entity_type(entity);
3749 /* is it a bitfield type? */
3750 if (is_Primitive_type(ent_type) &&
3751 get_primitive_base_type(ent_type) != NULL) {
3752 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3756 assert(get_type_mode(type) == mode);
3757 ir_node *mem = get_store();
3758 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3759 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3763 case IR_INITIALIZER_COMPOUND: {
3764 assert(is_compound_type(type));
3766 if (is_Array_type(type)) {
3767 assert(has_array_upper_bound(type, 0));
3768 n_members = get_array_upper_bound_int(type, 0);
3770 n_members = get_compound_n_members(type);
3773 if (get_initializer_compound_n_entries(initializer)
3774 != (unsigned) n_members)
3775 panic("initializer doesn't match compound type");
3777 for(int i = 0; i < n_members; ++i) {
3780 ir_entity *sub_entity;
3781 if (is_Array_type(type)) {
3782 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3783 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3784 ir_node *in[1] = { cnst };
3785 irtype = get_array_element_type(type);
3786 sub_entity = get_array_element_entity(type);
3787 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3790 sub_entity = get_compound_member(type, i);
3791 irtype = get_entity_type(sub_entity);
3792 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3796 ir_initializer_t *sub_init
3797 = get_initializer_compound_value(initializer, i);
3799 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3806 panic("invalid IR_INITIALIZER found");
3809 static void create_dynamic_initializer(ir_initializer_t *initializer,
3810 dbg_info *dbgi, ir_entity *entity)
3812 ir_node *frame = get_local_frame(entity);
3813 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3814 ir_type *type = get_entity_type(entity);
3816 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3819 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3820 ir_entity *entity, type_t *type)
3822 ir_node *memory = get_store();
3823 ir_node *nomem = new_NoMem();
3824 ir_node *frame = get_irg_frame(current_ir_graph);
3825 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3827 if (initializer->kind == INITIALIZER_VALUE) {
3828 initializer_value_t *initializer_value = &initializer->value;
3830 ir_node *value = expression_to_firm(initializer_value->value);
3831 type = skip_typeref(type);
3832 assign_value(dbgi, addr, type, value);
3836 if (!is_constant_initializer(initializer)) {
3837 ir_initializer_t *irinitializer
3838 = create_ir_initializer(initializer, type);
3840 create_dynamic_initializer(irinitializer, dbgi, entity);
3844 /* create the ir_initializer */
3845 ir_graph *const old_current_ir_graph = current_ir_graph;
3846 current_ir_graph = get_const_code_irg();
3848 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3850 assert(current_ir_graph == get_const_code_irg());
3851 current_ir_graph = old_current_ir_graph;
3853 /* create a "template" entity which is copied to the entity on the stack */
3854 ident *const id = id_unique("initializer.%u");
3855 ir_type *const irtype = get_ir_type(type);
3856 ir_type *const global_type = get_glob_type();
3857 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3858 set_entity_ld_ident(init_entity, id);
3860 set_entity_variability(init_entity, variability_initialized);
3861 set_entity_visibility(init_entity, visibility_local);
3862 set_entity_allocation(init_entity, allocation_static);
3864 set_entity_initializer(init_entity, irinitializer);
3866 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3867 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3869 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3870 set_store(copyb_mem);
3873 static void create_initializer_local_variable_entity(declaration_t *declaration)
3875 initializer_t *initializer = declaration->init.initializer;
3876 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3877 ir_entity *entity = declaration->v.entity;
3878 type_t *type = declaration->type;
3879 create_local_initializer(initializer, dbgi, entity, type);
3882 static void create_declaration_initializer(declaration_t *declaration)
3884 initializer_t *initializer = declaration->init.initializer;
3885 if (initializer == NULL)
3888 declaration_kind_t declaration_kind
3889 = (declaration_kind_t) declaration->declaration_kind;
3890 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3891 create_initializer_local_variable_entity(declaration);
3895 type_t *type = declaration->type;
3896 type_qualifiers_t tq = get_type_qualifier(type, true);
3898 if (initializer->kind == INITIALIZER_VALUE) {
3899 initializer_value_t *initializer_value = &initializer->value;
3901 = get_dbg_info(&declaration->source_position);
3903 ir_node *value = expression_to_firm(initializer_value->value);
3904 value = do_strict_conv(dbgi, value);
3906 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3907 set_value(declaration->v.value_number, value);
3909 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3911 ir_entity *entity = declaration->v.entity;
3913 if (tq & TYPE_QUALIFIER_CONST) {
3914 set_entity_variability(entity, variability_constant);
3916 set_entity_variability(entity, variability_initialized);
3918 set_atomic_ent_value(entity, value);
3921 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3922 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3924 ir_entity *entity = declaration->v.entity;
3925 ir_initializer_t *irinitializer
3926 = create_ir_initializer(initializer, type);
3928 if (tq & TYPE_QUALIFIER_CONST) {
3929 set_entity_variability(entity, variability_constant);
3931 set_entity_variability(entity, variability_initialized);
3933 set_entity_initializer(entity, irinitializer);
3937 static void create_variable_length_array(declaration_t *declaration)
3939 /* initializers are not allowed for VLAs */
3940 assert(declaration->init.initializer == NULL);
3942 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3943 declaration->v.vla_base = NULL;
3945 /* TODO: record VLA somewhere so we create the free node when we leave
3949 static void allocate_variable_length_array(declaration_t *declaration)
3951 /* initializers are not allowed for VLAs */
3952 assert(declaration->init.initializer == NULL);
3953 assert(get_cur_block() != NULL);
3955 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3956 type_t *type = declaration->type;
3957 ir_type *el_type = get_ir_type(type->array.element_type);
3959 /* make sure size_node is calculated */
3960 get_type_size(type);
3961 ir_node *elems = type->array.size_node;
3962 ir_node *mem = get_store();
3963 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3965 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3966 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3969 assert(declaration->declaration_kind
3970 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3971 declaration->v.vla_base = addr;
3975 * Creates a Firm local variable from a declaration.
3977 static void create_local_variable(declaration_t *declaration)
3979 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3981 bool needs_entity = declaration->address_taken;
3982 type_t *type = skip_typeref(declaration->type);
3984 /* is it a variable length array? */
3985 if (is_type_array(type) && !type->array.size_constant) {
3986 create_variable_length_array(declaration);
3988 } else if (is_type_array(type) || is_type_compound(type)) {
3989 needs_entity = true;
3990 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3991 needs_entity = true;
3995 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3996 create_declaration_entity(declaration,
3997 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4000 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4001 declaration->v.value_number = next_value_number_function;
4002 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
4003 ++next_value_number_function;
4007 static void create_local_static_variable(declaration_t *declaration)
4009 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
4011 type_t *const type = skip_typeref(declaration->type);
4012 ir_type *const global_type = get_glob_type();
4013 ir_type *const irtype = get_ir_type(type);
4014 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
4016 size_t l = strlen(declaration->symbol->string);
4017 char buf[l + sizeof(".%u")];
4018 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
4019 ident *const id = id_unique(buf);
4021 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
4023 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4024 set_entity_volatility(entity, volatility_is_volatile);
4027 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4028 declaration->v.entity = entity;
4029 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
4030 set_entity_variability(entity, variability_uninitialized);
4031 set_entity_visibility(entity, visibility_local);
4032 set_entity_allocation(entity, allocation_static);
4034 ir_graph *const old_current_ir_graph = current_ir_graph;
4035 current_ir_graph = get_const_code_irg();
4037 create_declaration_initializer(declaration);
4039 assert(current_ir_graph == get_const_code_irg());
4040 current_ir_graph = old_current_ir_graph;
4045 static void return_statement_to_firm(return_statement_t *statement)
4047 if (get_cur_block() == NULL)
4050 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4051 ir_type *func_irtype = get_ir_type(current_function_decl->type);
4056 if (get_method_n_ress(func_irtype) > 0) {
4057 ir_type *res_type = get_method_res_type(func_irtype, 0);
4059 if (statement->value != NULL) {
4060 ir_node *node = expression_to_firm(statement->value);
4061 node = do_strict_conv(dbgi, node);
4065 if (is_compound_type(res_type)) {
4068 mode = get_type_mode(res_type);
4070 in[0] = new_Unknown(mode);
4074 /* build return_value for its side effects */
4075 if (statement->value != NULL) {
4076 expression_to_firm(statement->value);
4081 ir_node *store = get_store();
4082 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4084 ir_node *end_block = get_irg_end_block(current_ir_graph);
4085 add_immBlock_pred(end_block, ret);
4087 set_cur_block(NULL);
4090 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4092 if (get_cur_block() == NULL)
4095 return expression_to_firm(statement->expression);
4098 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4100 declaration_t *declaration = compound->scope.declarations;
4101 for( ; declaration != NULL; declaration = declaration->next) {
4102 create_local_declaration(declaration);
4105 ir_node *result = NULL;
4106 statement_t *statement = compound->statements;
4107 for( ; statement != NULL; statement = statement->base.next) {
4108 if (statement->base.next == NULL
4109 && statement->kind == STATEMENT_EXPRESSION) {
4110 result = expression_statement_to_firm(
4111 &statement->expression);
4114 statement_to_firm(statement);
4120 static void create_global_variable(declaration_t *declaration)
4124 switch ((storage_class_tag_t)declaration->storage_class) {
4125 case STORAGE_CLASS_STATIC:
4126 vis = visibility_local;
4129 case STORAGE_CLASS_EXTERN:
4130 vis = visibility_external_allocated;
4133 case STORAGE_CLASS_NONE:
4134 vis = visibility_external_visible;
4137 case STORAGE_CLASS_THREAD:
4138 vis = visibility_external_visible;
4141 case STORAGE_CLASS_THREAD_EXTERN:
4142 vis = visibility_external_allocated;
4145 case STORAGE_CLASS_THREAD_STATIC:
4146 vis = visibility_local;
4150 var_type = get_tls_type();
4154 var_type = get_glob_type();
4158 create_declaration_entity(declaration,
4159 DECLARATION_KIND_GLOBAL_VARIABLE,
4161 if (!is_type_function(skip_typeref(declaration->type))) {
4162 set_entity_visibility(declaration->v.entity, vis);
4167 case STORAGE_CLASS_TYPEDEF:
4168 case STORAGE_CLASS_AUTO:
4169 case STORAGE_CLASS_REGISTER:
4170 case STORAGE_CLASS_ENUM_ENTRY:
4173 panic("Invalid storage class for global variable");
4176 static void create_local_declaration(declaration_t *declaration)
4178 if (declaration->namespc != NAMESPACE_NORMAL)
4180 /* construct type */
4181 (void) get_ir_type(declaration->type);
4182 if (declaration->symbol == NULL) {
4186 type_t *type = skip_typeref(declaration->type);
4188 switch ((storage_class_tag_t) declaration->storage_class) {
4189 case STORAGE_CLASS_STATIC:
4190 create_local_static_variable(declaration);
4192 case STORAGE_CLASS_EXTERN:
4193 create_global_variable(declaration);
4194 create_declaration_initializer(declaration);
4196 case STORAGE_CLASS_NONE:
4197 case STORAGE_CLASS_AUTO:
4198 case STORAGE_CLASS_REGISTER:
4199 if (is_type_function(type)) {
4200 if (declaration->init.statement != NULL) {
4201 get_function_entity(declaration);
4202 declaration->declaration_kind = DECLARATION_KIND_INNER_FUNCTION;
4203 enqueue_inner_function(declaration);
4205 get_function_entity(declaration);
4208 create_local_variable(declaration);
4211 case STORAGE_CLASS_ENUM_ENTRY:
4212 /* should already be handled */
4213 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4215 case STORAGE_CLASS_TYPEDEF:
4216 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4218 case STORAGE_CLASS_THREAD:
4219 case STORAGE_CLASS_THREAD_EXTERN:
4220 case STORAGE_CLASS_THREAD_STATIC:
4223 panic("invalid storage class found");
4226 static void initialize_local_declaration(declaration_t *declaration)
4228 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4231 switch ((declaration_kind_t) declaration->declaration_kind) {
4232 case DECLARATION_KIND_LOCAL_VARIABLE:
4233 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4234 create_declaration_initializer(declaration);
4237 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4238 allocate_variable_length_array(declaration);
4241 case DECLARATION_KIND_LABEL_BLOCK:
4242 case DECLARATION_KIND_COMPOUND_MEMBER:
4243 case DECLARATION_KIND_GLOBAL_VARIABLE:
4244 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4245 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4246 case DECLARATION_KIND_FUNCTION:
4247 case DECLARATION_KIND_TYPE:
4248 case DECLARATION_KIND_ENUM_ENTRY:
4249 case DECLARATION_KIND_INNER_FUNCTION:
4252 case DECLARATION_KIND_UNKNOWN:
4253 panic("can't initialize unknown declaration");
4255 panic("invalid declaration kind");
4258 static void declaration_statement_to_firm(declaration_statement_t *statement)
4260 declaration_t *declaration = statement->declarations_begin;
4261 declaration_t *end = statement->declarations_end->next;
4262 for( ; declaration != end; declaration = declaration->next) {
4263 if (declaration->namespc != NAMESPACE_NORMAL)
4265 initialize_local_declaration(declaration);
4269 static void if_statement_to_firm(if_statement_t *statement)
4271 ir_node *cur_block = get_cur_block();
4273 ir_node *fallthrough_block = NULL;
4275 /* the true (blocks) */
4276 ir_node *true_block = NULL;
4277 if (statement->true_statement != NULL) {
4278 true_block = new_immBlock();
4279 statement_to_firm(statement->true_statement);
4280 if (get_cur_block() != NULL) {
4281 ir_node *jmp = new_Jmp();
4282 if (fallthrough_block == NULL)
4283 fallthrough_block = new_immBlock();
4284 add_immBlock_pred(fallthrough_block, jmp);
4288 /* the false (blocks) */
4289 ir_node *false_block = NULL;
4290 if (statement->false_statement != NULL) {
4291 false_block = new_immBlock();
4293 statement_to_firm(statement->false_statement);
4294 if (get_cur_block() != NULL) {
4295 ir_node *jmp = new_Jmp();
4296 if (fallthrough_block == NULL)
4297 fallthrough_block = new_immBlock();
4298 add_immBlock_pred(fallthrough_block, jmp);
4302 /* create the condition */
4303 if (cur_block != NULL) {
4304 if (true_block == NULL || false_block == NULL) {
4305 if (fallthrough_block == NULL)
4306 fallthrough_block = new_immBlock();
4307 if (true_block == NULL)
4308 true_block = fallthrough_block;
4309 if (false_block == NULL)
4310 false_block = fallthrough_block;
4313 set_cur_block(cur_block);
4314 create_condition_evaluation(statement->condition, true_block,
4318 mature_immBlock(true_block);
4319 if (false_block != fallthrough_block && false_block != NULL) {
4320 mature_immBlock(false_block);
4322 if (fallthrough_block != NULL) {
4323 mature_immBlock(fallthrough_block);
4326 set_cur_block(fallthrough_block);
4329 static void while_statement_to_firm(while_statement_t *statement)
4331 ir_node *jmp = NULL;
4332 if (get_cur_block() != NULL) {
4336 /* create the header block */
4337 ir_node *header_block = new_immBlock();
4339 add_immBlock_pred(header_block, jmp);
4343 ir_node *old_continue_label = continue_label;
4344 ir_node *old_break_label = break_label;
4345 continue_label = header_block;
4348 ir_node *body_block = new_immBlock();
4349 statement_to_firm(statement->body);
4350 ir_node *false_block = break_label;
4352 assert(continue_label == header_block);
4353 continue_label = old_continue_label;
4354 break_label = old_break_label;
4356 if (get_cur_block() != NULL) {
4358 add_immBlock_pred(header_block, jmp);
4361 /* shortcut for while(true) */
4362 if (is_constant_expression(statement->condition)
4363 && fold_constant(statement->condition) != 0) {
4364 set_cur_block(header_block);
4365 ir_node *header_jmp = new_Jmp();
4366 add_immBlock_pred(body_block, header_jmp);
4368 keep_alive(body_block);
4369 keep_all_memory(body_block);
4370 set_cur_block(body_block);
4372 if (false_block == NULL) {
4373 false_block = new_immBlock();
4376 /* create the condition */
4377 set_cur_block(header_block);
4379 create_condition_evaluation(statement->condition, body_block,
4383 mature_immBlock(body_block);
4384 mature_immBlock(header_block);
4385 if (false_block != NULL) {
4386 mature_immBlock(false_block);
4389 set_cur_block(false_block);
4392 static void do_while_statement_to_firm(do_while_statement_t *statement)
4394 ir_node *jmp = NULL;
4395 if (get_cur_block() != NULL) {
4399 /* create the header block */
4400 ir_node *header_block = new_immBlock();
4403 ir_node *body_block = new_immBlock();
4405 add_immBlock_pred(body_block, jmp);
4408 ir_node *old_continue_label = continue_label;
4409 ir_node *old_break_label = break_label;
4410 continue_label = header_block;
4413 statement_to_firm(statement->body);
4414 ir_node *false_block = break_label;
4416 assert(continue_label == header_block);
4417 continue_label = old_continue_label;
4418 break_label = old_break_label;
4420 if (get_cur_block() != NULL) {
4421 ir_node *body_jmp = new_Jmp();
4422 add_immBlock_pred(header_block, body_jmp);
4423 mature_immBlock(header_block);
4426 if (false_block == NULL) {
4427 false_block = new_immBlock();
4430 /* create the condition */
4431 set_cur_block(header_block);
4433 create_condition_evaluation(statement->condition, body_block, false_block);
4434 mature_immBlock(body_block);
4435 mature_immBlock(header_block);
4436 if (false_block != NULL) {
4437 mature_immBlock(false_block);
4440 set_cur_block(false_block);
4443 static void for_statement_to_firm(for_statement_t *statement)
4445 ir_node *jmp = NULL;
4447 /* create declarations */
4448 declaration_t *declaration = statement->scope.declarations;
4449 for( ; declaration != NULL; declaration = declaration->next) {
4450 create_local_declaration(declaration);
4453 if (get_cur_block() != NULL) {
4454 declaration = statement->scope.declarations;
4455 for( ; declaration != NULL; declaration = declaration->next) {
4456 initialize_local_declaration(declaration);
4459 if (statement->initialisation != NULL) {
4460 expression_to_firm(statement->initialisation);
4467 /* create the step block */
4468 ir_node *const step_block = new_immBlock();
4469 if (statement->step != NULL) {
4470 expression_to_firm(statement->step);
4472 ir_node *const step_jmp = new_Jmp();
4474 /* create the header block */
4475 ir_node *const header_block = new_immBlock();
4477 add_immBlock_pred(header_block, jmp);
4479 add_immBlock_pred(header_block, step_jmp);
4481 /* the false block */
4482 ir_node *const false_block = new_immBlock();
4485 ir_node * body_block;
4486 if (statement->body != NULL) {
4487 ir_node *const old_continue_label = continue_label;
4488 ir_node *const old_break_label = break_label;
4489 continue_label = step_block;
4490 break_label = false_block;
4492 body_block = new_immBlock();
4493 statement_to_firm(statement->body);
4495 assert(continue_label == step_block);
4496 assert(break_label == false_block);
4497 continue_label = old_continue_label;
4498 break_label = old_break_label;
4500 if (get_cur_block() != NULL) {
4502 add_immBlock_pred(step_block, jmp);
4505 body_block = step_block;
4508 /* create the condition */
4509 set_cur_block(header_block);
4510 if (statement->condition != NULL) {
4511 create_condition_evaluation(statement->condition, body_block,
4514 keep_alive(header_block);
4515 keep_all_memory(header_block);
4517 add_immBlock_pred(body_block, jmp);
4520 mature_immBlock(body_block);
4521 mature_immBlock(false_block);
4522 mature_immBlock(step_block);
4523 mature_immBlock(header_block);
4524 mature_immBlock(false_block);
4526 set_cur_block(false_block);
4529 static void create_jump_statement(const statement_t *statement,
4530 ir_node *target_block)
4532 if (get_cur_block() == NULL)
4535 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4536 ir_node *jump = new_d_Jmp(dbgi);
4537 add_immBlock_pred(target_block, jump);
4539 set_cur_block(NULL);
4542 static ir_node *get_break_label(void)
4544 if (break_label == NULL) {
4545 ir_node *cur_block = get_cur_block();
4546 break_label = new_immBlock();
4547 set_cur_block(cur_block);
4552 static void switch_statement_to_firm(switch_statement_t *statement)
4554 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4556 ir_node *expression = expression_to_firm(statement->expression);
4557 ir_node *cond = new_d_Cond(dbgi, expression);
4559 set_cur_block(NULL);
4561 ir_node *const old_switch_cond = current_switch_cond;
4562 ir_node *const old_break_label = break_label;
4563 const bool old_saw_default_label = saw_default_label;
4564 saw_default_label = false;
4565 current_switch_cond = cond;
4567 switch_statement_t *const old_switch = current_switch;
4568 current_switch = statement;
4570 /* determine a free number for the default label */
4571 unsigned long num_cases = 0;
4573 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4574 if (l->expression == NULL) {
4578 if (l->last_case >= l->first_case)
4579 num_cases += l->last_case - l->first_case;
4580 if (l->last_case > def_nr)
4581 def_nr = l->last_case;
4584 if (def_nr + 1 < 0) {
4585 /* Bad: an overflow occurred, we cannot be sure that the
4586 * maximum + 1 is a free number. Scan the values a second
4587 * time to find a free number.
4589 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4592 memset(bits, 0, (num_cases + 7) >> 3);
4593 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4594 if (l->expression == NULL) {
4598 for (long cns = l->first_case; cns <= l->last_case; ++cns) {
4599 if (cns >= 0 && (unsigned long)cns < num_cases)
4600 bits[cns >> 3] |= (1 << (cns & 7));
4603 /* We look at the first num_cases constants:
4604 * Either they are densed, so we took the last (num_cases)
4605 * one, or they are non densed, so we will find one free
4608 for (i = 0; i < num_cases; ++i)
4609 if ((bits[i >> 3] & (i & 7)) == 0)
4617 statement->default_proj_nr = def_nr;
4619 if (statement->body != NULL) {
4620 statement_to_firm(statement->body);
4623 if (get_cur_block() != NULL) {
4624 ir_node *jmp = new_Jmp();
4625 add_immBlock_pred(get_break_label(), jmp);
4628 if (!saw_default_label) {
4629 set_cur_block(get_nodes_block(cond));
4630 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4631 statement->default_proj_nr);
4632 add_immBlock_pred(get_break_label(), proj);
4635 if (break_label != NULL) {
4636 mature_immBlock(break_label);
4638 set_cur_block(break_label);
4640 assert(current_switch_cond == cond);
4641 current_switch = old_switch;
4642 current_switch_cond = old_switch_cond;
4643 break_label = old_break_label;
4644 saw_default_label = old_saw_default_label;
4647 static void case_label_to_firm(const case_label_statement_t *statement)
4649 if (statement->is_empty_range)
4652 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4654 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4657 ir_node *old_block = get_nodes_block(current_switch_cond);
4658 ir_node *block = new_immBlock();
4660 set_cur_block(old_block);
4661 if (statement->expression != NULL) {
4662 long pn = statement->first_case;
4663 long end_pn = statement->last_case;
4664 assert(pn <= end_pn);
4665 /* create jumps for all cases in the given range */
4667 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4668 add_immBlock_pred(block, proj);
4669 } while(pn++ < end_pn);
4671 saw_default_label = true;
4672 proj = new_d_defaultProj(dbgi, current_switch_cond,
4673 current_switch->default_proj_nr);
4675 add_immBlock_pred(block, proj);
4678 if (fallthrough != NULL) {
4679 add_immBlock_pred(block, fallthrough);
4681 mature_immBlock(block);
4682 set_cur_block(block);
4684 if (statement->statement != NULL) {
4685 statement_to_firm(statement->statement);
4689 static void label_to_firm(const label_statement_t *statement)
4691 ir_node *block = get_label_block(statement->label);
4693 if (get_cur_block() != NULL) {
4694 ir_node *jmp = new_Jmp();
4695 add_immBlock_pred(block, jmp);
4698 set_cur_block(block);
4700 keep_all_memory(block);
4702 if (statement->statement != NULL) {
4703 statement_to_firm(statement->statement);
4707 static void goto_to_firm(const goto_statement_t *statement)
4709 if (get_cur_block() == NULL)
4712 if (statement->expression) {
4713 ir_node *irn = expression_to_firm(statement->expression);
4714 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4715 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4717 set_irn_link(ijmp, ijmp_list);
4720 ir_node *block = get_label_block(statement->label);
4721 ir_node *jmp = new_Jmp();
4722 add_immBlock_pred(block, jmp);
4724 set_cur_block(NULL);
4727 static void asm_statement_to_firm(const asm_statement_t *statement)
4729 bool needs_memory = false;
4731 if (statement->is_volatile) {
4732 needs_memory = true;
4735 size_t n_clobbers = 0;
4736 asm_clobber_t *clobber = statement->clobbers;
4737 for( ; clobber != NULL; clobber = clobber->next) {
4738 const char *clobber_str = clobber->clobber.begin;
4740 if (!be_is_valid_clobber(clobber_str)) {
4741 errorf(&statement->base.source_position,
4742 "invalid clobber '%s' specified", clobber->clobber);
4746 if (strcmp(clobber_str, "memory") == 0) {
4747 needs_memory = true;
4751 ident *id = new_id_from_str(clobber_str);
4752 obstack_ptr_grow(&asm_obst, id);
4755 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4756 ident **clobbers = NULL;
4757 if (n_clobbers > 0) {
4758 clobbers = obstack_finish(&asm_obst);
4761 size_t n_inputs = 0;
4762 asm_argument_t *argument = statement->inputs;
4763 for ( ; argument != NULL; argument = argument->next)
4765 size_t n_outputs = 0;
4766 argument = statement->outputs;
4767 for ( ; argument != NULL; argument = argument->next)
4770 unsigned next_pos = 0;
4772 ir_node *ins[n_inputs + n_outputs + 1];
4775 ir_asm_constraint tmp_in_constraints[n_outputs];
4777 const expression_t *out_exprs[n_outputs];
4778 ir_node *out_addrs[n_outputs];
4779 size_t out_size = 0;
4781 argument = statement->outputs;
4782 for ( ; argument != NULL; argument = argument->next) {
4783 const char *constraints = argument->constraints.begin;
4784 asm_constraint_flags_t asm_flags
4785 = be_parse_asm_constraints(constraints);
4787 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4788 errorf(&statement->base.source_position,
4789 "some constraints in '%s' are not supported", constraints);
4792 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4793 errorf(&statement->base.source_position,
4794 "some constraints in '%s' are invalid", constraints);
4797 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4798 errorf(&statement->base.source_position,
4799 "no write flag specified for output constraints '%s'",
4804 unsigned pos = next_pos++;
4805 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4806 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4807 expression_t *expr = argument->expression;
4808 ir_node *addr = expression_to_addr(expr);
4809 /* in+output, construct an artifical same_as constraint on the
4811 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4813 ir_node *value = get_value_from_lvalue(expr, addr);
4815 snprintf(buf, sizeof(buf), "%u", pos);
4817 ir_asm_constraint constraint;
4818 constraint.pos = pos;
4819 constraint.constraint = new_id_from_str(buf);
4820 constraint.mode = get_ir_mode(expr->base.type);
4821 tmp_in_constraints[in_size] = constraint;
4822 ins[in_size] = value;
4827 out_exprs[out_size] = expr;
4828 out_addrs[out_size] = addr;
4830 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4831 /* pure memory ops need no input (but we have to make sure we
4832 * attach to the memory) */
4833 assert(! (asm_flags &
4834 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4835 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4836 needs_memory = true;
4838 /* we need to attach the address to the inputs */
4839 expression_t *expr = argument->expression;
4841 ir_asm_constraint constraint;
4842 constraint.pos = pos;
4843 constraint.constraint = new_id_from_str(constraints);
4844 constraint.mode = NULL;
4845 tmp_in_constraints[in_size] = constraint;
4847 ins[in_size] = expression_to_addr(expr);
4851 errorf(&statement->base.source_position,
4852 "only modifiers but no place set in constraints '%s'",
4857 ir_asm_constraint constraint;
4858 constraint.pos = pos;
4859 constraint.constraint = new_id_from_str(constraints);
4860 constraint.mode = get_ir_mode(argument->expression->base.type);
4862 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4864 assert(obstack_object_size(&asm_obst)
4865 == out_size * sizeof(ir_asm_constraint));
4866 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4869 obstack_grow(&asm_obst, tmp_in_constraints,
4870 in_size * sizeof(tmp_in_constraints[0]));
4871 /* find and count input and output arguments */
4872 argument = statement->inputs;
4873 for( ; argument != NULL; argument = argument->next) {
4874 const char *constraints = argument->constraints.begin;
4875 asm_constraint_flags_t asm_flags
4876 = be_parse_asm_constraints(constraints);
4878 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4879 errorf(&statement->base.source_position,
4880 "some constraints in '%s' are not supported", constraints);
4883 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4884 errorf(&statement->base.source_position,
4885 "some constraints in '%s' are invalid", constraints);
4888 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4889 errorf(&statement->base.source_position,
4890 "write flag specified for input constraints '%s'",
4896 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4897 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4898 /* we can treat this as "normal" input */
4899 input = expression_to_firm(argument->expression);
4900 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4901 /* pure memory ops need no input (but we have to make sure we
4902 * attach to the memory) */
4903 assert(! (asm_flags &
4904 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4905 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4906 needs_memory = true;
4907 input = expression_to_addr(argument->expression);
4909 errorf(&statement->base.source_position,
4910 "only modifiers but no place set in constraints '%s'",
4915 ir_asm_constraint constraint;
4916 constraint.pos = next_pos++;
4917 constraint.constraint = new_id_from_str(constraints);
4918 constraint.mode = get_irn_mode(input);
4920 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4921 ins[in_size++] = input;
4925 ir_asm_constraint constraint;
4926 constraint.pos = next_pos++;
4927 constraint.constraint = new_id_from_str("");
4928 constraint.mode = mode_M;
4930 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4931 ins[in_size++] = get_store();
4934 assert(obstack_object_size(&asm_obst)
4935 == in_size * sizeof(ir_asm_constraint));
4936 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4938 /* create asm node */
4939 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4941 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4943 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4944 out_size, output_constraints,
4945 n_clobbers, clobbers, asm_text);
4947 if (statement->is_volatile) {
4948 set_irn_pinned(node, op_pin_state_pinned);
4950 set_irn_pinned(node, op_pin_state_floats);
4953 /* create output projs & connect them */
4955 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4960 for (i = 0; i < out_size; ++i) {
4961 const expression_t *out_expr = out_exprs[i];
4963 ir_mode *mode = get_ir_mode(out_expr->base.type);
4964 ir_node *proj = new_Proj(node, mode, pn);
4965 ir_node *addr = out_addrs[i];
4967 set_value_for_expression_addr(out_expr, proj, addr);
4971 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4972 statement_to_firm(statement->try_statement);
4973 warningf(&statement->base.source_position, "structured exception handling ignored");
4976 static void leave_statement_to_firm(leave_statement_t *statement) {
4977 errorf(&statement->base.source_position, "__leave not supported yet");
4981 * Transform a statement.
4983 static void statement_to_firm(statement_t *statement)
4986 assert(!statement->base.transformed);
4987 statement->base.transformed = true;
4990 switch(statement->kind) {
4991 case STATEMENT_INVALID:
4992 panic("invalid statement found");
4994 case STATEMENT_EMPTY:
4997 case STATEMENT_COMPOUND:
4998 compound_statement_to_firm(&statement->compound);
5000 case STATEMENT_RETURN:
5001 return_statement_to_firm(&statement->returns);
5003 case STATEMENT_EXPRESSION:
5004 expression_statement_to_firm(&statement->expression);
5007 if_statement_to_firm(&statement->ifs);
5009 case STATEMENT_WHILE:
5010 while_statement_to_firm(&statement->whiles);
5012 case STATEMENT_DO_WHILE:
5013 do_while_statement_to_firm(&statement->do_while);
5015 case STATEMENT_DECLARATION:
5016 declaration_statement_to_firm(&statement->declaration);
5018 case STATEMENT_BREAK:
5019 create_jump_statement(statement, get_break_label());
5021 case STATEMENT_CONTINUE:
5022 create_jump_statement(statement, continue_label);
5024 case STATEMENT_SWITCH:
5025 switch_statement_to_firm(&statement->switchs);
5027 case STATEMENT_CASE_LABEL:
5028 case_label_to_firm(&statement->case_label);
5031 for_statement_to_firm(&statement->fors);
5033 case STATEMENT_LABEL:
5034 label_to_firm(&statement->label);
5036 case STATEMENT_GOTO:
5037 goto_to_firm(&statement->gotos);
5040 asm_statement_to_firm(&statement->asms);
5042 case STATEMENT_MS_TRY:
5043 ms_try_statement_to_firm(&statement->ms_try);
5045 case STATEMENT_LEAVE:
5046 leave_statement_to_firm(&statement->leave);
5049 panic("Statement not implemented\n");
5052 static int count_local_declarations(const declaration_t * decl,
5053 const declaration_t *const end)
5056 for (; decl != end; decl = decl->next) {
5057 if (decl->namespc != NAMESPACE_NORMAL)
5059 type_t *type = skip_typeref(decl->type);
5061 if (!decl->address_taken && is_type_scalar(type))
5067 static void count_decls_in_stmt(statement_t *stmt, void *const env)
5069 int *const count = env;
5071 switch (stmt->kind) {
5072 case STATEMENT_DECLARATION: {
5073 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5074 *count += count_local_declarations(decl_stmt->declarations_begin,
5075 decl_stmt->declarations_end->next);
5080 *count += count_local_declarations(stmt->fors.scope.declarations, NULL);
5088 static int get_function_n_local_vars(declaration_t *declaration)
5092 /* count parameters */
5093 count += count_local_declarations(declaration->scope.declarations, NULL);
5095 /* count local variables declared in body */
5096 walk_statements(declaration->init.statement, count_decls_in_stmt, &count);
5100 static void initialize_function_parameters(declaration_t *declaration)
5102 ir_graph *irg = current_ir_graph;
5103 ir_node *args = get_irg_args(irg);
5104 ir_node *start_block = get_irg_start_block(irg);
5105 ir_type *function_irtype = get_ir_type(declaration->type);
5108 declaration_t *parameter = declaration->scope.declarations;
5109 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5110 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5111 type_t *type = skip_typeref(parameter->type);
5113 bool needs_entity = parameter->address_taken;
5114 assert(!is_type_array(type));
5115 if (is_type_compound(type)) {
5116 needs_entity = true;
5120 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5121 ident *id = new_id_from_str(parameter->symbol->string);
5122 set_entity_ident(entity, id);
5124 parameter->declaration_kind
5125 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5126 parameter->v.entity = entity;
5130 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5131 ir_mode *param_mode = get_type_mode(param_irtype);
5134 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5136 ir_mode *mode = get_ir_mode(type);
5137 value = create_conv(NULL, value, mode);
5138 value = do_strict_conv(NULL, value);
5140 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5141 parameter->v.value_number = next_value_number_function;
5142 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5143 ++next_value_number_function;
5145 set_value(parameter->v.value_number, value);
5150 * Handle additional decl modifiers for IR-graphs
5152 * @param irg the IR-graph
5153 * @param dec_modifiers additional modifiers
5155 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5157 if (decl_modifiers & DM_NORETURN) {
5158 /* TRUE if the declaration includes the Microsoft
5159 __declspec(noreturn) specifier. */
5160 set_irg_additional_property(irg, mtp_property_noreturn);
5162 if (decl_modifiers & DM_NOTHROW) {
5163 /* TRUE if the declaration includes the Microsoft
5164 __declspec(nothrow) specifier. */
5165 set_irg_additional_property(irg, mtp_property_nothrow);
5167 if (decl_modifiers & DM_NAKED) {
5168 /* TRUE if the declaration includes the Microsoft
5169 __declspec(naked) specifier. */
5170 set_irg_additional_property(irg, mtp_property_naked);
5172 if (decl_modifiers & DM_FORCEINLINE) {
5173 /* TRUE if the declaration includes the
5174 Microsoft __forceinline specifier. */
5175 set_irg_inline_property(irg, irg_inline_forced);
5177 if (decl_modifiers & DM_NOINLINE) {
5178 /* TRUE if the declaration includes the Microsoft
5179 __declspec(noinline) specifier. */
5180 set_irg_inline_property(irg, irg_inline_forbidden);
5184 static void add_function_pointer(ir_type *segment, ir_entity *method,
5185 const char *unique_template)
5187 ir_type *method_type = get_entity_type(method);
5188 ident *id = id_unique(unique_template);
5189 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5191 ident *ide = id_unique(unique_template);
5192 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5193 ir_graph *irg = get_const_code_irg();
5194 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5197 set_entity_compiler_generated(ptr, 1);
5198 set_entity_variability(ptr, variability_constant);
5199 set_atomic_ent_value(ptr, val);
5203 * Generate possible IJmp branches to a given label block.
5205 static void gen_ijmp_branches(ir_node *block) {
5207 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5208 add_immBlock_pred(block, ijmp);
5213 * Create code for a function.
5215 static void create_function(declaration_t *declaration)
5217 ir_entity *function_entity = get_function_entity(declaration);
5219 if (declaration->init.statement == NULL)
5222 if (declaration->modifiers & DM_CONSTRUCTOR) {
5223 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5224 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5226 if (declaration->modifiers & DM_DESTRUCTOR) {
5227 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5228 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5231 current_function_decl = declaration;
5232 current_function_name = NULL;
5233 current_funcsig = NULL;
5235 assert(all_labels == NULL);
5236 all_labels = NEW_ARR_F(declaration_t *, 0);
5239 int n_local_vars = get_function_n_local_vars(declaration);
5240 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5242 ir_graph *old_current_function = current_function;
5243 current_function = irg;
5245 set_irg_fp_model(irg, firm_opt.fp_model);
5246 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5247 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5249 ir_node *first_block = get_cur_block();
5251 /* set inline flags */
5252 if (declaration->is_inline)
5253 set_irg_inline_property(irg, irg_inline_recomended);
5254 handle_decl_modifier_irg(irg, declaration->modifiers);
5256 next_value_number_function = 0;
5257 initialize_function_parameters(declaration);
5259 statement_to_firm(declaration->init.statement);
5261 ir_node *end_block = get_irg_end_block(irg);
5263 /* do we have a return statement yet? */
5264 if (get_cur_block() != NULL) {
5265 type_t *type = skip_typeref(declaration->type);
5266 assert(is_type_function(type));
5267 const function_type_t *func_type = &type->function;
5268 const type_t *return_type
5269 = skip_typeref(func_type->return_type);
5272 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5273 ret = new_Return(get_store(), 0, NULL);
5276 if (is_type_scalar(return_type)) {
5277 mode = get_ir_mode(func_type->return_type);
5283 /* ยง5.1.2.2.3 main implicitly returns 0 */
5284 if (strcmp(declaration->symbol->string, "main") == 0) {
5285 in[0] = new_Const(mode, get_mode_null(mode));
5287 in[0] = new_Unknown(mode);
5289 ret = new_Return(get_store(), 1, in);
5291 add_immBlock_pred(end_block, ret);
5294 bool has_computed_gotos = false;
5295 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5296 declaration_t *label = all_labels[i];
5297 if (label->address_taken) {
5298 gen_ijmp_branches(label->v.block);
5299 has_computed_gotos = true;
5301 mature_immBlock(label->v.block);
5303 if (has_computed_gotos) {
5304 /* if we have computed goto's in the function, we cannot inline it */
5305 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5306 warningf(&declaration->source_position,
5307 "function '%Y' can never be inlined because it contains a computed goto",
5308 declaration->symbol);
5310 set_irg_inline_property(irg, irg_inline_forbidden);
5313 DEL_ARR_F(all_labels);
5316 mature_immBlock(first_block);
5317 mature_immBlock(end_block);
5319 irg_finalize_cons(irg);
5321 /* finalize the frame type */
5322 ir_type *frame_type = get_irg_frame_type(irg);
5323 int n = get_compound_n_members(frame_type);
5326 for(int i = 0; i < n; ++i) {
5327 ir_entity *entity = get_compound_member(frame_type, i);
5328 ir_type *entity_type = get_entity_type(entity);
5330 int align = get_type_alignment_bytes(entity_type);
5331 if (align > align_all)
5335 misalign = offset % align;
5337 offset += align - misalign;
5341 set_entity_offset(entity, offset);
5342 offset += get_type_size_bytes(entity_type);
5344 set_type_size_bytes(frame_type, offset);
5345 set_type_alignment_bytes(frame_type, align_all);
5348 current_function = old_current_function;
5351 static void scope_to_firm(scope_t *scope)
5353 /* first pass: create declarations */
5354 declaration_t *declaration = scope->declarations;
5355 for( ; declaration != NULL; declaration = declaration->next) {
5356 if (declaration->namespc != NAMESPACE_NORMAL)
5358 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5359 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5361 if (declaration->symbol == NULL)
5364 type_t *type = skip_typeref(declaration->type);
5365 if (is_type_function(type)) {
5366 get_function_entity(declaration);
5368 create_global_variable(declaration);
5372 /* second pass: create code/initializers */
5373 declaration = scope->declarations;
5374 for( ; declaration != NULL; declaration = declaration->next) {
5375 if (declaration->namespc != NAMESPACE_NORMAL)
5377 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5378 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5380 if (declaration->symbol == NULL)
5383 type_t *type = declaration->type;
5384 if (type->kind == TYPE_FUNCTION) {
5385 create_function(declaration);
5386 declaration_t *inner;
5387 for (inner = next_inner_function(); inner != NULL;
5388 inner = next_inner_function())
5389 create_function(inner);
5391 assert(declaration->declaration_kind
5392 == DECLARATION_KIND_GLOBAL_VARIABLE);
5393 current_ir_graph = get_const_code_irg();
5394 create_declaration_initializer(declaration);
5399 static void set_be_option(const char *option)
5401 int res = firm_be_option(option);
5405 void init_ast2firm(void)
5407 obstack_init(&asm_obst);
5408 init_atomic_modes();
5410 id_underscore = new_id_from_chars("_", 1);
5411 id_imp = new_id_from_chars("__imp_", 6);
5413 /* OS option must be set to the backend */
5414 switch (firm_opt.os_support) {
5415 case OS_SUPPORT_MINGW:
5416 create_ld_ident = create_ld_ident_win32;
5417 set_be_option("ia32-gasmode=mingw");
5419 case OS_SUPPORT_LINUX:
5420 create_ld_ident = create_ld_ident_linux_elf;
5421 set_be_option("ia32-gasmode=elf");
5423 case OS_SUPPORT_MACHO:
5424 create_ld_ident = create_ld_ident_macho;
5425 set_be_option("ia32-gasmode=macho");
5426 set_be_option("ia32-stackalign=4");
5427 set_be_option("pic");
5431 /* create idents for all known runtime functions */
5432 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5433 rts_idents[i] = new_id_from_str(rts_data[i].name);
5436 entitymap_init(&entitymap);
5439 static void init_ir_types(void)
5441 static int ir_types_initialized = 0;
5442 if (ir_types_initialized)
5444 ir_types_initialized = 1;
5446 ir_type_int = get_ir_type(type_int);
5447 ir_type_const_char = get_ir_type(type_const_char);
5448 ir_type_wchar_t = get_ir_type(type_wchar_t);
5449 ir_type_void = get_ir_type(type_void);
5452 void exit_ast2firm(void)
5454 entitymap_destroy(&entitymap);
5455 obstack_free(&asm_obst, NULL);
5458 static void global_asm_to_firm(statement_t *s)
5460 for (; s != NULL; s = s->base.next) {
5461 assert(s->kind == STATEMENT_ASM);
5463 char const *const text = s->asms.asm_text.begin;
5464 size_t size = s->asms.asm_text.size;
5466 /* skip the last \0 */
5467 if (text[size - 1] == '\0')
5470 ident *const id = new_id_from_chars(text, size);
5475 void translation_unit_to_firm(translation_unit_t *unit)
5477 /* just to be sure */
5478 continue_label = NULL;
5480 current_switch_cond = NULL;
5484 scope_to_firm(&unit->scope);
5485 global_asm_to_firm(unit->global_asm);
5487 current_ir_graph = NULL;