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"
43 #include "entitymap_t.h"
44 #include "driver/firm_opt.h"
45 #include "driver/firm_cmdline.h"
47 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
49 /* some idents needed for name mangling */
50 static ident *id_underscore;
53 static ir_type *ir_type_const_char;
54 static ir_type *ir_type_wchar_t;
55 static ir_type *ir_type_void;
56 static ir_type *ir_type_int;
58 static type_t *type_const_char;
60 static int next_value_number_function;
61 static ir_node *continue_label;
62 static ir_node *break_label;
63 static ir_node *current_switch_cond;
64 static bool saw_default_label;
65 static ir_node **imature_blocks;
66 static bool constant_folding;
68 static const declaration_t *current_function_decl;
69 static ir_node *current_function_name;
70 static ir_node *current_funcsig;
72 static entitymap_t entitymap;
74 static struct obstack asm_obst;
76 typedef enum declaration_kind_t {
77 DECLARATION_KIND_UNKNOWN,
78 DECLARATION_KIND_FUNCTION,
79 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
80 DECLARATION_KIND_GLOBAL_VARIABLE,
81 DECLARATION_KIND_LOCAL_VARIABLE,
82 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
83 DECLARATION_KIND_COMPOUND_MEMBER,
84 DECLARATION_KIND_LABEL_BLOCK,
85 DECLARATION_KIND_ENUM_ENTRY,
86 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
87 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
91 static ir_type *get_ir_type(type_t *type);
92 static ir_type *get_ir_type_incomplete(type_t *type);
93 static int count_decls_in_stmts(const statement_t *stmt);
95 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
97 const declaration_t *declaration = get_irg_loc_description(irg, pos);
99 warningf(&declaration->source_position,
100 "variable '%#T' might be used uninitialized",
101 declaration->type, declaration->symbol);
102 return new_r_Unknown(irg, mode);
105 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
107 const source_position_t *pos = (const source_position_t*) dbg;
110 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
114 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
116 const source_position_t *pos = (const source_position_t*) dbg;
121 return pos->input_name;
124 static dbg_info *get_dbg_info(const source_position_t *pos)
126 return (dbg_info*) pos;
129 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
131 static ir_mode *mode_int, *mode_uint;
133 static ir_node *_expression_to_firm(const expression_t *expression);
134 static ir_node *expression_to_firm(const expression_t *expression);
135 static inline ir_mode *get_ir_mode(type_t *type);
136 static void create_local_declaration(declaration_t *declaration);
138 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
140 unsigned flags = get_atomic_type_flags(kind);
141 unsigned size = get_atomic_type_size(kind);
142 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
143 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
146 unsigned bit_size = size * 8;
147 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
148 ir_mode_arithmetic arithmetic;
149 unsigned modulo_shift;
151 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
152 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
153 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
154 sort = irms_int_number;
155 arithmetic = irma_twos_complement;
156 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
158 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
159 snprintf(name, sizeof(name), "f%d", bit_size);
160 sort = irms_float_number;
161 arithmetic = irma_ieee754;
164 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
172 * Initialises the atomic modes depending on the machine size.
174 static void init_atomic_modes(void)
176 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
177 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
179 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
180 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
182 /* there's no real void type in firm */
183 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
185 /* initialize pointer modes */
187 ir_mode_sort sort = irms_reference;
188 unsigned bit_size = machine_size;
190 ir_mode_arithmetic arithmetic = irma_twos_complement;
191 unsigned modulo_shift
192 = bit_size < machine_size ? machine_size : bit_size;
194 snprintf(name, sizeof(name), "p%d", machine_size);
195 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
198 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
199 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
201 /* Hmm, pointers should be machine size */
202 set_modeP_data(ptr_mode);
203 set_modeP_code(ptr_mode);
206 static unsigned get_compound_type_size(compound_type_t *type)
208 ir_type *irtype = get_ir_type((type_t*) type);
209 return get_type_size_bytes(irtype);
212 static unsigned get_array_type_size(array_type_t *type)
214 assert(!type->is_vla);
215 ir_type *irtype = get_ir_type((type_t*) type);
216 return get_type_size_bytes(irtype);
220 static unsigned get_type_size_const(type_t *type)
222 type = skip_typeref(type);
226 panic("error type occurred");
228 return get_atomic_type_size(type->atomic.akind);
230 return 2 * get_atomic_type_size(type->complex.akind);
232 return get_atomic_type_size(type->imaginary.akind);
234 return get_mode_size_bytes(mode_int);
235 case TYPE_COMPOUND_UNION:
236 case TYPE_COMPOUND_STRUCT:
237 return get_compound_type_size(&type->compound);
239 /* just a pointer to the function */
240 return get_mode_size_bytes(mode_P_code);
242 return get_mode_size_bytes(mode_P_data);
244 return get_array_type_size(&type->array);
246 return get_type_size_const(type->builtin.real_type);
248 panic("type size of bitfield request");
254 panic("Trying to determine size of invalid type");
257 static ir_node *get_type_size(type_t *type)
259 type = skip_typeref(type);
261 if (is_type_array(type) && type->array.is_vla) {
262 ir_node *size_node = type->array.size_node;
263 if (size_node == NULL) {
264 size_node = expression_to_firm(type->array.size_expression);
265 assert(!is_Const(size_node));
266 type->array.size_node = size_node;
269 ir_node *elem_size = get_type_size(type->array.element_type);
270 ir_mode *mode = get_irn_mode(size_node);
271 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
275 ir_mode *mode = get_ir_mode(type_size_t);
277 sym.type_p = get_ir_type(type);
278 return new_SymConst(mode, sym, symconst_type_size);
281 static unsigned count_parameters(const function_type_t *function_type)
285 function_parameter_t *parameter = function_type->parameters;
286 for ( ; parameter != NULL; parameter = parameter->next) {
294 * Creates a Firm type for an atomic type
296 static ir_type *create_atomic_type(const atomic_type_t *type)
298 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
299 atomic_type_kind_t kind = type->akind;
300 ir_mode *mode = _atomic_modes[kind];
301 ident *id = get_mode_ident(mode);
302 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
304 set_type_alignment_bytes(irtype, type->base.alignment);
310 * Creates a Firm type for a complex type
312 static ir_type *create_complex_type(const complex_type_t *type)
314 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
315 atomic_type_kind_t kind = type->akind;
316 ir_mode *mode = _atomic_modes[kind];
317 ident *id = get_mode_ident(mode);
322 /* FIXME: finish the array */
327 * Creates a Firm type for an imaginary type
329 static ir_type *create_imaginary_type(const imaginary_type_t *type)
331 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
332 atomic_type_kind_t kind = type->akind;
333 ir_mode *mode = _atomic_modes[kind];
334 ident *id = get_mode_ident(mode);
335 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
337 set_type_alignment_bytes(irtype, type->base.alignment);
343 * return type of a parameter (and take transparent union gnu extension into
346 static type_t *get_parameter_type(type_t *type)
348 type = skip_typeref(type);
349 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
350 declaration_t *decl = type->compound.declaration;
351 type = decl->scope.declarations->type;
357 static ir_type *create_method_type(const function_type_t *function_type)
359 type_t *return_type = function_type->return_type;
361 ident *id = id_unique("functiontype.%u");
362 int n_parameters = count_parameters(function_type);
363 int n_results = return_type == type_void ? 0 : 1;
364 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
365 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
367 if (return_type != type_void) {
368 ir_type *restype = get_ir_type(return_type);
369 set_method_res_type(irtype, 0, restype);
372 function_parameter_t *parameter = function_type->parameters;
374 for ( ; parameter != NULL; parameter = parameter->next) {
375 type_t *type = get_parameter_type(parameter->type);
376 ir_type *p_irtype = get_ir_type(type);
377 set_method_param_type(irtype, n, p_irtype);
381 if (function_type->variadic || function_type->unspecified_parameters) {
382 set_method_variadicity(irtype, variadicity_variadic);
388 static ir_type *create_pointer_type(pointer_type_t *type)
390 type_t *points_to = type->points_to;
391 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
392 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
393 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
394 ir_points_to, mode_P_data, dbgi);
399 static ir_type *create_array_type(array_type_t *type)
401 type_t *element_type = type->element_type;
402 ir_type *ir_element_type = get_ir_type(element_type);
404 ident *id = id_unique("array.%u");
405 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
406 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
408 const int align = get_type_alignment_bytes(ir_element_type);
409 set_type_alignment_bytes(ir_type, align);
411 if (type->size_constant) {
412 int n_elements = type->size;
414 set_array_bounds_int(ir_type, 0, 0, n_elements);
416 size_t elemsize = get_type_size_bytes(ir_element_type);
417 if (elemsize % align > 0) {
418 elemsize += align - (elemsize % align);
420 set_type_size_bytes(ir_type, n_elements * elemsize);
422 set_array_lower_bound_int(ir_type, 0, 0);
424 set_type_state(ir_type, layout_fixed);
430 * Return the signed integer type of size bits.
432 * @param size the size
434 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
437 static ir_mode *s_modes[64 + 1] = {NULL, };
441 if (size <= 0 || size > 64)
444 mode = s_modes[size];
448 snprintf(name, sizeof(name), "bf_I%u", size);
449 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
450 size <= 32 ? 32 : size );
451 s_modes[size] = mode;
455 snprintf(name, sizeof(name), "I%u", size);
456 ident *id = new_id_from_str(name);
457 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
458 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
459 set_primitive_base_type(res, base_tp);
465 * Return the unsigned integer type of size bits.
467 * @param size the size
469 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
472 static ir_mode *u_modes[64 + 1] = {NULL, };
476 if (size <= 0 || size > 64)
479 mode = u_modes[size];
483 snprintf(name, sizeof(name), "bf_U%u", size);
484 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
485 size <= 32 ? 32 : size );
486 u_modes[size] = mode;
491 snprintf(name, sizeof(name), "U%u", size);
492 ident *id = new_id_from_str(name);
493 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
494 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
495 set_primitive_base_type(res, base_tp);
500 static ir_type *create_bitfield_type(bitfield_type_t *const type)
502 type_t *base = skip_typeref(type->base_type);
503 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
504 ir_type *irbase = get_ir_type(base);
506 unsigned size = fold_constant(type->size);
508 assert(!is_type_float(base));
509 if (is_type_signed(base)) {
510 return get_signed_int_type_for_bit_size(irbase, size);
512 return get_unsigned_int_type_for_bit_size(irbase, size);
516 #define INVALID_TYPE ((ir_type_ptr)-1)
519 COMPOUND_IS_STRUCT = false,
520 COMPOUND_IS_UNION = true
524 * Construct firm type from ast struct type.
526 * As anonymous inner structs get flattened to a single firm type, we might get
527 * irtype, outer_offset and out_align passed (they represent the position of
528 * the anonymous inner struct inside the resulting firm struct)
530 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
531 size_t *outer_offset, size_t *outer_align,
532 bool incomplete, bool is_union)
534 declaration_t *declaration = type->declaration;
535 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
537 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
538 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
540 return declaration->v.irtype;
542 size_t align_all = 1;
544 size_t bit_offset = 0;
547 if (irtype == NULL) {
548 symbol_t *symbol = declaration->symbol;
550 if (symbol != NULL) {
551 id = new_id_from_str(symbol->string);
554 id = id_unique("__anonymous_union.%u");
556 id = id_unique("__anonymous_struct.%u");
559 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
562 irtype = new_d_type_union(id, dbgi);
564 irtype = new_d_type_struct(id, dbgi);
567 declaration->declaration_kind
568 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
569 declaration->v.irtype = irtype;
570 //type->base.firm_type = irtype;
572 offset = *outer_offset;
573 align_all = *outer_align;
579 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
581 declaration_t *entry = declaration->scope.declarations;
582 for( ; entry != NULL; entry = entry->next) {
583 if (entry->namespc != NAMESPACE_NORMAL)
586 size_t prev_offset = offset;
588 symbol_t *symbol = entry->symbol;
589 type_t *entry_type = skip_typeref(entry->type);
590 dbg_info *dbgi = get_dbg_info(&entry->source_position);
593 if (symbol != NULL) {
594 ident = new_id_from_str(symbol->string);
596 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
597 create_compound_type(&entry_type->compound, irtype, &offset,
598 &align_all, false, COMPOUND_IS_STRUCT);
599 goto finished_member;
600 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
601 create_compound_type(&entry_type->compound, irtype, &offset,
602 &align_all, false, COMPOUND_IS_UNION);
603 goto finished_member;
605 assert(entry_type->kind == TYPE_BITFIELD);
607 ident = id_unique("anon.%u");
610 ir_type *base_irtype;
611 if (entry_type->kind == TYPE_BITFIELD) {
612 base_irtype = get_ir_type(entry_type->bitfield.base_type);
614 base_irtype = get_ir_type(entry_type);
617 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
618 size_t misalign = offset % entry_alignment;
620 ir_type *entry_irtype = get_ir_type(entry_type);
621 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
624 size_t bits_remainder;
625 if (entry_type->kind == TYPE_BITFIELD) {
626 size_t size_bits = fold_constant(entry_type->bitfield.size);
627 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
629 if (size_bits > rest_size_bits) {
630 /* start a new bucket */
631 offset += entry_alignment - misalign;
637 /* put into current bucket */
638 base = offset - misalign;
639 bits_remainder = misalign * 8 + bit_offset;
642 offset += size_bits / 8;
643 bit_offset = bit_offset + (size_bits % 8);
645 size_t entry_size = get_type_size_bytes(base_irtype);
646 if (misalign > 0 || bit_offset > 0)
647 offset += entry_alignment - misalign;
651 offset += entry_size;
655 if (entry_alignment > align_all) {
656 if (entry_alignment % align_all != 0) {
657 panic("uneven alignments not supported yet");
659 align_all = entry_alignment;
662 set_entity_offset(entity, base);
663 set_entity_offset_bits_remainder(entity,
664 (unsigned char) bits_remainder);
665 //add_struct_member(irtype, entity);
666 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
667 assert(entry->v.entity == NULL);
668 entry->v.entity = entity;
672 size_t entry_size = offset - prev_offset;
673 if (entry_size > size) {
685 size_t misalign = offset % align_all;
686 if (misalign > 0 || bit_offset > 0) {
687 size += align_all - misalign;
690 if (outer_offset != NULL) {
692 *outer_offset = offset;
694 *outer_offset += size;
697 if (align_all > *outer_align) {
698 if (align_all % *outer_align != 0) {
699 panic("uneven alignments not supported yet");
701 *outer_align = align_all;
704 set_type_alignment_bytes(irtype, align_all);
705 set_type_size_bytes(irtype, size);
706 set_type_state(irtype, layout_fixed);
712 static ir_type *create_enum_type(enum_type_t *const type)
714 type->base.firm_type = ir_type_int;
716 ir_mode *const mode = mode_int;
717 tarval *const one = get_mode_one(mode);
718 tarval * tv_next = get_tarval_null(mode);
720 bool constant_folding_old = constant_folding;
721 constant_folding = true;
723 declaration_t *declaration = type->declaration->next;
724 for (; declaration != NULL; declaration = declaration->next) {
725 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
728 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
730 expression_t *const init = declaration->init.enum_value;
732 ir_node *const cnst = expression_to_firm(init);
733 if (!is_Const(cnst)) {
734 panic("couldn't fold constant");
736 tv_next = get_Const_tarval(cnst);
738 declaration->v.enum_val = tv_next;
739 tv_next = tarval_add(tv_next, one);
742 constant_folding = constant_folding_old;
747 static ir_type *get_ir_type_incomplete(type_t *type)
749 assert(type != NULL);
750 type = skip_typeref(type);
752 if (type->base.firm_type != NULL) {
753 assert(type->base.firm_type != INVALID_TYPE);
754 return type->base.firm_type;
757 switch (type->kind) {
758 case TYPE_COMPOUND_STRUCT:
759 return create_compound_type(&type->compound, NULL, NULL, NULL,
760 true, COMPOUND_IS_STRUCT);
761 case TYPE_COMPOUND_UNION:
762 return create_compound_type(&type->compound, NULL, NULL, NULL,
763 true, COMPOUND_IS_UNION);
765 return get_ir_type(type);
769 static ir_type *get_ir_type(type_t *type)
771 assert(type != NULL);
773 type = skip_typeref(type);
775 if (type->base.firm_type != NULL) {
776 assert(type->base.firm_type != INVALID_TYPE);
777 return type->base.firm_type;
780 ir_type *firm_type = NULL;
781 switch (type->kind) {
783 panic("error type occurred");
785 firm_type = create_atomic_type(&type->atomic);
788 firm_type = create_complex_type(&type->complex);
791 firm_type = create_imaginary_type(&type->imaginary);
794 firm_type = create_method_type(&type->function);
797 firm_type = create_pointer_type(&type->pointer);
800 firm_type = create_array_type(&type->array);
802 case TYPE_COMPOUND_STRUCT:
803 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
804 false, COMPOUND_IS_STRUCT);
806 case TYPE_COMPOUND_UNION:
807 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
808 false, COMPOUND_IS_UNION);
811 firm_type = create_enum_type(&type->enumt);
814 firm_type = get_ir_type(type->builtin.real_type);
817 firm_type = create_bitfield_type(&type->bitfield);
825 if (firm_type == NULL)
826 panic("unknown type found");
828 type->base.firm_type = firm_type;
832 static inline ir_mode *get_ir_mode(type_t *type)
834 ir_type *irtype = get_ir_type(type);
836 /* firm doesn't report a mode for arrays somehow... */
837 if (is_Array_type(irtype)) {
841 ir_mode *mode = get_type_mode(irtype);
842 assert(mode != NULL);
846 /** Names of the runtime functions. */
847 static const struct {
848 int id; /**< the rts id */
849 int n_res; /**< number of return values */
850 const char *name; /**< the name of the rts function */
851 int n_params; /**< number of parameters */
852 unsigned flags; /**< language flags */
854 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
855 { rts_abort, 0, "abort", 0, _C89 },
856 { rts_alloca, 1, "alloca", 1, _ALL },
857 { rts_abs, 1, "abs", 1, _C89 },
858 { rts_labs, 1, "labs", 1, _C89 },
859 { rts_llabs, 1, "llabs", 1, _C99 },
860 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
862 { rts_fabs, 1, "fabs", 1, _C89 },
863 { rts_sqrt, 1, "sqrt", 1, _C89 },
864 { rts_cbrt, 1, "cbrt", 1, _C99 },
865 { rts_exp, 1, "exp", 1, _C89 },
866 { rts_exp2, 1, "exp2", 1, _C89 },
867 { rts_exp10, 1, "exp10", 1, _GNUC },
868 { rts_log, 1, "log", 1, _C89 },
869 { rts_log2, 1, "log2", 1, _C89 },
870 { rts_log10, 1, "log10", 1, _C89 },
871 { rts_pow, 1, "pow", 2, _C89 },
872 { rts_sin, 1, "sin", 1, _C89 },
873 { rts_cos, 1, "cos", 1, _C89 },
874 { rts_tan, 1, "tan", 1, _C89 },
875 { rts_asin, 1, "asin", 1, _C89 },
876 { rts_acos, 1, "acos", 1, _C89 },
877 { rts_atan, 1, "atan", 1, _C89 },
878 { rts_sinh, 1, "sinh", 1, _C89 },
879 { rts_cosh, 1, "cosh", 1, _C89 },
880 { rts_tanh, 1, "tanh", 1, _C89 },
882 { rts_fabsf, 1, "fabsf", 1, _C99 },
883 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
884 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
885 { rts_expf, 1, "expf", 1, _C99 },
886 { rts_exp2f, 1, "exp2f", 1, _C99 },
887 { rts_exp10f, 1, "exp10f", 1, _GNUC },
888 { rts_logf, 1, "logf", 1, _C99 },
889 { rts_log2f, 1, "log2f", 1, _C99 },
890 { rts_log10f, 1, "log10f", 1, _C99 },
891 { rts_powf, 1, "powf", 2, _C99 },
892 { rts_sinf, 1, "sinf", 1, _C99 },
893 { rts_cosf, 1, "cosf", 1, _C99 },
894 { rts_tanf, 1, "tanf", 1, _C99 },
895 { rts_asinf, 1, "asinf", 1, _C99 },
896 { rts_acosf, 1, "acosf", 1, _C99 },
897 { rts_atanf, 1, "atanf", 1, _C99 },
898 { rts_sinhf, 1, "sinhf", 1, _C99 },
899 { rts_coshf, 1, "coshf", 1, _C99 },
900 { rts_tanhf, 1, "tanhf", 1, _C99 },
902 { rts_fabsl, 1, "fabsl", 1, _C99 },
903 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
904 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
905 { rts_expl, 1, "expl", 1, _C99 },
906 { rts_exp2l, 1, "exp2l", 1, _C99 },
907 { rts_exp10l, 1, "exp10l", 1, _GNUC },
908 { rts_logl, 1, "logl", 1, _C99 },
909 { rts_log2l, 1, "log2l", 1, _C99 },
910 { rts_log10l, 1, "log10l", 1, _C99 },
911 { rts_powl, 1, "powl", 2, _C99 },
912 { rts_sinl, 1, "sinl", 1, _C99 },
913 { rts_cosl, 1, "cosl", 1, _C99 },
914 { rts_tanl, 1, "tanl", 1, _C99 },
915 { rts_asinl, 1, "asinl", 1, _C99 },
916 { rts_acosl, 1, "acosl", 1, _C99 },
917 { rts_atanl, 1, "atanl", 1, _C99 },
918 { rts_sinhl, 1, "sinhl", 1, _C99 },
919 { rts_coshl, 1, "coshl", 1, _C99 },
920 { rts_tanhl, 1, "tanhl", 1, _C99 },
922 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
923 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
924 { rts_strcmp, 1, "strcmp", 2, _C89 },
925 { rts_strncmp, 1, "strncmp", 3, _C89 }
928 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
931 * Mangles an entity linker (ld) name for win32 usage.
933 * @param ent the entity to be mangled
934 * @param declaration the declaration
936 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
940 if (is_Method_type(get_entity_type(ent)))
941 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
943 /* always add an underscore in win32 */
944 id = mangle(id_underscore, get_entity_ident(ent));
947 decl_modifiers_t decl_modifiers = declaration->modifiers;
948 if (decl_modifiers & DM_DLLIMPORT) {
949 /* add prefix for imported symbols */
950 id = mangle(id_imp, id);
956 * Mangles an entity linker (ld) name for Linux ELF usage.
958 * @param ent the entity to be mangled
959 * @param declaration the declaration
961 static ident *create_ld_ident_linux_elf(ir_entity *entity,
962 declaration_t *declaration)
965 return get_entity_ident(entity);
969 * Mangles an entity linker (ld) name for Mach-O usage.
971 * @param ent the entity to be mangled
972 * @param declaration the declaration
974 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
977 ident *id = mangle(id_underscore, get_entity_ident(ent));
981 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
982 declaration_t *declaration);
983 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
986 * Creates an entity representing a function.
988 * @param declaration the function declaration
990 static ir_entity *get_function_entity(declaration_t *declaration)
992 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
993 return declaration->v.entity;
994 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
996 symbol_t *symbol = declaration->symbol;
997 ident *id = new_id_from_str(symbol->string);
999 ir_type *global_type = get_glob_type();
1000 ir_type *ir_type_method = get_ir_type(declaration->type);
1001 assert(is_Method_type(ir_type_method));
1003 /* already an entity defined? */
1004 ir_entity *entity = entitymap_get(&entitymap, symbol);
1005 if (entity != NULL) {
1006 if (get_entity_visibility(entity) == visibility_external_allocated
1007 && declaration->init.statement != NULL) {
1008 set_entity_visibility(entity, visibility_external_visible);
1010 goto entity_created;
1013 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1014 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1015 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1017 /* static inline => local
1018 * extern inline => local
1019 * inline without definition => local
1020 * inline with definition => external_visible */
1022 if (declaration->is_inline && declaration->storage_class == STORAGE_CLASS_NONE
1023 && declaration->init.statement != NULL) {
1024 set_entity_visibility(entity, visibility_external_visible);
1026 else if (declaration->storage_class == STORAGE_CLASS_STATIC
1027 || declaration->is_inline) {
1028 if (declaration->init.statement == NULL) {
1029 /* this entity was declared, but is defined nowhere */
1030 set_entity_peculiarity(entity, peculiarity_description);
1032 set_entity_visibility(entity, visibility_local);
1033 } else if (declaration->init.statement != NULL) {
1034 set_entity_visibility(entity, visibility_external_visible);
1036 set_entity_visibility(entity, visibility_external_allocated);
1038 set_entity_allocation(entity, allocation_static);
1040 /* We should check for file scope here, but as long as we compile C only
1041 this is not needed. */
1042 if (! firm_opt.freestanding) {
1043 /* check for a known runtime function */
1044 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1045 if (id != rts_idents[i])
1048 /* ignore those rts functions not necessary needed for current mode */
1049 if ((c_mode & rts_data[i].flags) == 0)
1051 assert(rts_entities[rts_data[i].id] == NULL);
1052 rts_entities[rts_data[i].id] = entity;
1056 entitymap_insert(&entitymap, symbol, entity);
1059 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1060 declaration->v.entity = entity;
1066 * Creates a Const node representing a constant.
1068 static ir_node *const_to_firm(const const_expression_t *cnst)
1070 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1071 ir_mode *mode = get_ir_mode(cnst->base.type);
1076 if (mode_is_float(mode)) {
1077 tv = new_tarval_from_double(cnst->v.float_value, mode);
1079 if (mode_is_signed(mode)) {
1080 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1082 len = snprintf(buf, sizeof(buf), "%llu",
1083 (unsigned long long) cnst->v.int_value);
1085 tv = new_tarval_from_str(buf, len, mode);
1088 return new_d_Const(dbgi, mode, tv);
1092 * Creates a Const node representing a character constant.
1094 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1096 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1097 ir_mode *mode = get_ir_mode(cnst->base.type);
1099 long long int v = 0;
1100 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1101 if (char_is_signed) {
1102 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1104 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1108 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1109 tarval *tv = new_tarval_from_str(buf, len, mode);
1111 return new_d_Const(dbgi, mode, tv);
1115 * Creates a Const node representing a wide character constant.
1117 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1119 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1120 ir_mode *mode = get_ir_mode(cnst->base.type);
1122 long long int v = cnst->v.wide_character.begin[0];
1125 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1126 tarval *tv = new_tarval_from_str(buf, len, mode);
1128 return new_d_Const(dbgi, mode, tv);
1132 * Creates a SymConst for a given entity.
1134 * @param dbgi debug info
1135 * @param mode the (reference) mode for the SymConst
1136 * @param entity the entity
1138 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1141 assert(entity != NULL);
1142 union symconst_symbol sym;
1143 sym.entity_p = entity;
1144 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1148 * Creates a SymConst node representing a string constant.
1150 * @param src_pos the source position of the string constant
1151 * @param id_prefix a prefix for the name of the generated string constant
1152 * @param value the value of the string constant
1154 static ir_node *string_to_firm(const source_position_t *const src_pos,
1155 const char *const id_prefix,
1156 const string_t *const value)
1158 ir_type *const global_type = get_glob_type();
1159 dbg_info *const dbgi = get_dbg_info(src_pos);
1160 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1161 ir_type_const_char, dbgi);
1163 ident *const id = id_unique(id_prefix);
1164 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1165 set_entity_ld_ident(entity, id);
1166 set_entity_variability(entity, variability_constant);
1167 set_entity_allocation(entity, allocation_static);
1169 ir_type *const elem_type = ir_type_const_char;
1170 ir_mode *const mode = get_type_mode(elem_type);
1172 const char* const string = value->begin;
1173 const size_t slen = value->size;
1175 set_array_lower_bound_int(type, 0, 0);
1176 set_array_upper_bound_int(type, 0, slen);
1177 set_type_size_bytes(type, slen);
1178 set_type_state(type, layout_fixed);
1180 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1181 for(size_t i = 0; i < slen; ++i) {
1182 tvs[i] = new_tarval_from_long(string[i], mode);
1185 set_array_entity_values(entity, tvs, slen);
1188 return create_symconst(dbgi, mode_P_data, entity);
1192 * Creates a SymConst node representing a string literal.
1194 * @param literal the string literal
1196 static ir_node *string_literal_to_firm(
1197 const string_literal_expression_t* literal)
1199 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1204 * Creates a SymConst node representing a wide string literal.
1206 * @param literal the wide string literal
1208 static ir_node *wide_string_literal_to_firm(
1209 const wide_string_literal_expression_t* const literal)
1211 ir_type *const global_type = get_glob_type();
1212 ir_type *const elem_type = ir_type_wchar_t;
1213 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1214 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1217 ident *const id = id_unique("Lstr.%u");
1218 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1219 set_entity_ld_ident(entity, id);
1220 set_entity_variability(entity, variability_constant);
1221 set_entity_allocation(entity, allocation_static);
1223 ir_mode *const mode = get_type_mode(elem_type);
1225 const wchar_rep_t *const string = literal->value.begin;
1226 const size_t slen = literal->value.size;
1228 set_array_lower_bound_int(type, 0, 0);
1229 set_array_upper_bound_int(type, 0, slen);
1230 set_type_size_bytes(type, slen);
1231 set_type_state(type, layout_fixed);
1233 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1234 for(size_t i = 0; i < slen; ++i) {
1235 tvs[i] = new_tarval_from_long(string[i], mode);
1238 set_array_entity_values(entity, tvs, slen);
1241 return create_symconst(dbgi, mode_P_data, entity);
1244 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1245 ir_node *const addr)
1247 ir_type *irtype = get_ir_type(type);
1248 if (is_compound_type(irtype)
1249 || is_Method_type(irtype)
1250 || is_Array_type(irtype)) {
1254 ir_mode *const mode = get_type_mode(irtype);
1255 ir_node *const memory = get_store();
1256 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1257 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1258 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1260 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1261 set_Load_volatility(load, volatility_is_volatile);
1264 set_store(load_mem);
1269 * Creates a strict Conv if neccessary.
1271 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1273 ir_mode *mode = get_irn_mode(node);
1275 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1277 if (!mode_is_float(mode))
1280 /* check if there is already a Conv */
1281 if (is_Conv(node)) {
1282 /* convert it into a strict Conv */
1283 set_Conv_strict(node, 1);
1287 /* otherwise create a new one */
1288 return new_d_strictConv(dbgi, node, mode);
1291 static ir_node *get_global_var_address(dbg_info *const dbgi,
1292 const declaration_t *const decl)
1294 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1296 ir_entity *const entity = decl->v.entity;
1297 switch ((storage_class_tag_t)decl->storage_class) {
1298 case STORAGE_CLASS_THREAD:
1299 case STORAGE_CLASS_THREAD_EXTERN:
1300 case STORAGE_CLASS_THREAD_STATIC: {
1301 ir_node *const no_mem = new_NoMem();
1302 ir_node *const tls = get_irg_tls(current_ir_graph);
1303 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1307 return create_symconst(dbgi, mode_P_data, entity);
1312 * Returns the correct base address depending on whether it is a parameter or a
1313 * normal local variable.
1315 static ir_node *get_local_frame(ir_entity *const ent)
1317 ir_graph *const irg = current_ir_graph;
1318 const ir_type *const owner = get_entity_owner(ent);
1319 if (owner == get_irg_frame_type(irg)) {
1320 return get_irg_frame(irg);
1322 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1323 return get_irg_value_param_base(irg);
1327 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1329 ir_mode *value_mode = get_irn_mode(value);
1331 if (value_mode == dest_mode || is_Bad(value))
1334 if (dest_mode == mode_b) {
1335 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1336 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1337 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1341 return new_d_Conv(dbgi, value, dest_mode);
1344 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1346 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1347 declaration_t *declaration = ref->declaration;
1348 type_t *type = skip_typeref(declaration->type);
1350 /* make sure the type is constructed */
1351 (void) get_ir_type(type);
1353 switch((declaration_kind_t) declaration->declaration_kind) {
1354 case DECLARATION_KIND_TYPE:
1355 case DECLARATION_KIND_UNKNOWN:
1358 case DECLARATION_KIND_ENUM_ENTRY: {
1359 ir_mode *const mode = get_ir_mode(type);
1360 return new_Const(mode, declaration->v.enum_val);
1363 case DECLARATION_KIND_LOCAL_VARIABLE: {
1364 ir_mode *const mode = get_ir_mode(type);
1365 return get_value(declaration->v.value_number, mode);
1367 case DECLARATION_KIND_FUNCTION: {
1368 ir_mode *const mode = get_ir_mode(type);
1369 return create_symconst(dbgi, mode, declaration->v.entity);
1371 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1372 ir_node *const addr = get_global_var_address(dbgi, declaration);
1373 return deref_address(dbgi, declaration->type, addr);
1376 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1377 ir_entity *entity = declaration->v.entity;
1378 ir_node *frame = get_local_frame(entity);
1379 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1380 return deref_address(dbgi, declaration->type, sel);
1383 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1384 return declaration->v.vla_base;
1386 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1387 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1388 case DECLARATION_KIND_COMPOUND_MEMBER:
1389 case DECLARATION_KIND_LABEL_BLOCK:
1390 panic("not implemented reference type");
1393 panic("reference to declaration with unknown type found");
1396 static ir_node *reference_addr(const reference_expression_t *ref)
1398 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1399 declaration_t *declaration = ref->declaration;
1401 switch((declaration_kind_t) declaration->declaration_kind) {
1402 case DECLARATION_KIND_TYPE:
1403 case DECLARATION_KIND_UNKNOWN:
1405 case DECLARATION_KIND_LOCAL_VARIABLE:
1406 /* you can store to a local variable (so we don't panic but return NULL
1407 * as an indicator for no real address) */
1409 case DECLARATION_KIND_FUNCTION: {
1410 type_t *const type = skip_typeref(ref->base.type);
1411 ir_mode *const mode = get_ir_mode(type);
1412 return create_symconst(dbgi, mode, declaration->v.entity);
1414 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1415 ir_node *const addr = get_global_var_address(dbgi, declaration);
1418 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1419 ir_entity *entity = declaration->v.entity;
1420 ir_node *frame = get_local_frame(entity);
1421 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1426 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1427 return declaration->v.vla_base;
1429 case DECLARATION_KIND_ENUM_ENTRY:
1430 panic("trying to reference enum entry");
1432 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1433 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1434 case DECLARATION_KIND_COMPOUND_MEMBER:
1435 case DECLARATION_KIND_LABEL_BLOCK:
1436 panic("not implemented reference type");
1439 panic("reference to declaration with unknown type found");
1443 * Transform calls to builtin functions.
1445 static ir_node *process_builtin_call(const call_expression_t *call)
1447 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1449 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1450 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1452 type_t *type = skip_typeref(builtin->base.type);
1453 assert(is_type_pointer(type));
1455 type_t *function_type = skip_typeref(type->pointer.points_to);
1456 symbol_t *symbol = builtin->symbol;
1458 switch(symbol->ID) {
1459 case T___builtin_alloca: {
1460 if (call->arguments == NULL || call->arguments->next != NULL) {
1461 panic("invalid number of parameters on __builtin_alloca");
1463 expression_t *argument = call->arguments->expression;
1464 ir_node *size = expression_to_firm(argument);
1466 ir_node *store = get_store();
1467 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1469 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1471 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1475 case T___builtin_huge_val: {
1476 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1477 tarval *tv = get_mode_infinite(mode);
1478 ir_node *res = new_d_Const(dbgi, mode, tv);
1481 case T___builtin_nan:
1482 case T___builtin_nanf:
1483 case T___builtin_nand: {
1484 /* Ignore string for now... */
1485 assert(is_type_function(function_type));
1486 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1487 tarval *tv = get_mode_NAN(mode);
1488 ir_node *res = new_d_Const(dbgi, mode, tv);
1491 case T___builtin_va_end:
1494 panic("Unsupported builtin found\n");
1499 * Transform a call expression.
1500 * Handles some special cases, like alloca() calls, which must be resolved
1501 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1502 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1505 static ir_node *call_expression_to_firm(const call_expression_t *call)
1507 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1508 assert(get_cur_block() != NULL);
1510 expression_t *function = call->function;
1511 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1512 return process_builtin_call(call);
1514 if (function->kind == EXPR_REFERENCE) {
1515 const reference_expression_t *ref = &function->reference;
1516 declaration_t *declaration = ref->declaration;
1518 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1519 if (declaration->v.entity == rts_entities[rts_alloca]) {
1520 /* handle alloca() call */
1521 expression_t *argument = call->arguments->expression;
1522 ir_node *size = expression_to_firm(argument);
1524 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1526 ir_node *store = get_store();
1527 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1528 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1530 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1532 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1538 ir_node *callee = expression_to_firm(function);
1540 type_t *type = skip_typeref(function->base.type);
1541 assert(is_type_pointer(type));
1542 pointer_type_t *pointer_type = &type->pointer;
1543 type_t *points_to = skip_typeref(pointer_type->points_to);
1544 assert(is_type_function(points_to));
1545 function_type_t *function_type = &points_to->function;
1547 int n_parameters = 0;
1548 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1549 ir_type *new_method_type = NULL;
1550 if (function_type->variadic || function_type->unspecified_parameters) {
1551 const call_argument_t *argument = call->arguments;
1552 for( ; argument != NULL; argument = argument->next) {
1556 /* we need to construct a new method type matching the call
1558 int n_res = get_method_n_ress(ir_method_type);
1559 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1560 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1561 n_parameters, n_res, dbgi);
1562 set_method_calling_convention(new_method_type,
1563 get_method_calling_convention(ir_method_type));
1564 set_method_additional_properties(new_method_type,
1565 get_method_additional_properties(ir_method_type));
1566 set_method_variadicity(new_method_type,
1567 get_method_variadicity(ir_method_type));
1569 for(int i = 0; i < n_res; ++i) {
1570 set_method_res_type(new_method_type, i,
1571 get_method_res_type(ir_method_type, i));
1573 argument = call->arguments;
1574 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1575 expression_t *expression = argument->expression;
1576 ir_type *irtype = get_ir_type(expression->base.type);
1577 set_method_param_type(new_method_type, i, irtype);
1579 ir_method_type = new_method_type;
1581 n_parameters = get_method_n_params(ir_method_type);
1584 ir_node *in[n_parameters];
1586 const call_argument_t *argument = call->arguments;
1587 for(int n = 0; n < n_parameters; ++n) {
1588 expression_t *expression = argument->expression;
1589 ir_node *arg_node = expression_to_firm(expression);
1591 arg_node = do_strict_conv(dbgi, arg_node);
1595 argument = argument->next;
1598 ir_node *store = get_store();
1599 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1601 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1604 type_t *return_type = skip_typeref(function_type->return_type);
1605 ir_node *result = NULL;
1607 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1609 if (is_type_scalar(return_type)) {
1610 mode = get_ir_mode(return_type);
1614 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1615 result = new_d_Proj(dbgi, resproj, mode, 0);
1621 static void statement_to_firm(statement_t *statement);
1622 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1624 static ir_node *expression_to_addr(const expression_t *expression);
1625 static void create_condition_evaluation(const expression_t *expression,
1626 ir_node *true_block,
1627 ir_node *false_block);
1629 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1632 value = do_strict_conv(dbgi, value);
1634 ir_node *memory = get_store();
1636 if (is_type_scalar(type)) {
1637 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1638 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1639 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1640 set_Store_volatility(store, volatility_is_volatile);
1641 set_store(store_mem);
1643 ir_type *irtype = get_ir_type(type);
1644 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1645 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1646 set_store(copyb_mem);
1650 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1652 tarval *all_one = get_mode_all_one(mode);
1653 int mode_size = get_mode_size_bits(mode);
1655 assert(offset >= 0 && size >= 0);
1656 assert(offset + size <= mode_size);
1657 if (size == mode_size) {
1661 long shiftr = get_mode_size_bits(mode) - size;
1662 long shiftl = offset;
1663 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1664 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1665 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1666 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1671 static void bitfield_store_to_firm(const select_expression_t *expression,
1672 ir_node *addr, ir_node *value)
1674 type_t *type = expression->base.type;
1675 ir_mode *mode = get_ir_mode(type);
1677 assert(get_irn_mode(value) == mode || is_Bad(value));
1679 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1681 /* kill upper bits of value and shift to right position */
1682 ir_entity *entity = expression->compound_entry->v.entity;
1683 int bitoffset = get_entity_offset_bits_remainder(entity);
1684 ir_type *entity_type = get_entity_type(entity);
1685 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1687 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1688 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1689 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1690 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1691 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1692 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1694 /* load current value */
1695 ir_node *mem = get_store();
1696 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1697 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1698 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1699 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1700 tarval *inv_mask = tarval_not(shift_mask);
1701 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1702 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1704 /* construct new value and store */
1705 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1706 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1707 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1708 set_store(store_mem);
1710 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1711 set_Load_volatility(load, volatility_is_volatile);
1712 set_Store_volatility(store, volatility_is_volatile);
1716 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1719 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1720 type_t *type = expression->base.type;
1721 ir_mode *mode = get_ir_mode(type);
1722 ir_node *mem = get_store();
1723 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1724 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1725 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1727 load_res = create_conv(dbgi, load_res, mode_int);
1729 set_store(load_mem);
1731 /* kill upper bits */
1732 ir_entity *entity = expression->compound_entry->v.entity;
1733 int bitoffset = get_entity_offset_bits_remainder(entity);
1734 ir_type *entity_type = get_entity_type(entity);
1735 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1736 long shift_bitsl = machine_size - bitoffset - bitsize;
1737 assert(shift_bitsl >= 0);
1738 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1739 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1740 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1742 long shift_bitsr = bitoffset + shift_bitsl;
1743 assert(shift_bitsr <= (long) machine_size);
1744 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1745 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1747 if (mode_is_signed(mode)) {
1748 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1750 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1753 return create_conv(dbgi, shiftr, mode);
1756 static void set_value_for_expression_addr(const expression_t *expression,
1757 ir_node *value, ir_node *addr)
1759 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1760 value = do_strict_conv(dbgi, value);
1762 if (expression->kind == EXPR_REFERENCE) {
1763 const reference_expression_t *ref = &expression->reference;
1765 declaration_t *declaration = ref->declaration;
1766 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1767 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1768 set_value(declaration->v.value_number, value);
1774 addr = expression_to_addr(expression);
1776 type_t *type = skip_typeref(expression->base.type);
1778 if (expression->kind == EXPR_SELECT) {
1779 const select_expression_t *select = &expression->select;
1781 declaration_t *declaration = select->compound_entry;
1782 if (declaration->type->kind == TYPE_BITFIELD) {
1783 bitfield_store_to_firm(select, addr, value);
1788 assign_value(dbgi, addr, type, value);
1791 static void set_value_for_expression(const expression_t *expression,
1794 set_value_for_expression_addr(expression, value, NULL);
1797 static ir_node *get_value_from_lvalue(const expression_t *expression,
1800 if (expression->kind == EXPR_REFERENCE) {
1801 const reference_expression_t *ref = &expression->reference;
1803 declaration_t *declaration = ref->declaration;
1804 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1805 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1806 assert(addr == NULL);
1807 ir_mode *mode = get_ir_mode(expression->base.type);
1808 return get_value(declaration->v.value_number, mode);
1812 assert(addr != NULL);
1813 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1816 if (expression->kind == EXPR_SELECT &&
1817 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1818 value = bitfield_extract_to_firm(&expression->select, addr);
1820 value = deref_address(dbgi, expression->base.type, addr);
1827 static ir_node *create_incdec(const unary_expression_t *expression)
1829 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1830 const expression_t *value_expr = expression->value;
1831 ir_node *addr = expression_to_addr(value_expr);
1832 ir_node *value = get_value_from_lvalue(value_expr, addr);
1834 type_t *type = skip_typeref(expression->base.type);
1835 ir_mode *mode = get_ir_mode(expression->base.type);
1838 if (is_type_pointer(type)) {
1839 pointer_type_t *pointer_type = &type->pointer;
1840 offset = get_type_size(pointer_type->points_to);
1842 assert(is_type_arithmetic(type));
1843 offset = new_Const(mode, get_mode_one(mode));
1847 ir_node *store_value;
1848 switch(expression->base.kind) {
1849 case EXPR_UNARY_POSTFIX_INCREMENT:
1851 store_value = new_d_Add(dbgi, value, offset, mode);
1853 case EXPR_UNARY_POSTFIX_DECREMENT:
1855 store_value = new_d_Sub(dbgi, value, offset, mode);
1857 case EXPR_UNARY_PREFIX_INCREMENT:
1858 result = new_d_Add(dbgi, value, offset, mode);
1859 store_value = result;
1861 case EXPR_UNARY_PREFIX_DECREMENT:
1862 result = new_d_Sub(dbgi, value, offset, mode);
1863 store_value = result;
1866 panic("no incdec expr in create_incdec");
1869 set_value_for_expression_addr(value_expr, store_value, addr);
1874 static bool is_local_variable(expression_t *expression)
1876 if (expression->kind != EXPR_REFERENCE)
1878 reference_expression_t *ref_expr = &expression->reference;
1879 declaration_t *declaration = ref_expr->declaration;
1880 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1883 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1886 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1887 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1888 case EXPR_BINARY_NOTEQUAL:
1889 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1890 case EXPR_BINARY_ISLESS:
1891 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1892 case EXPR_BINARY_ISLESSEQUAL:
1893 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1894 case EXPR_BINARY_ISGREATER:
1895 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1896 case EXPR_BINARY_ISGREATEREQUAL:
1897 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1898 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1903 panic("trying to get pn_Cmp from non-comparison binexpr type");
1907 * Handle the assume optimizer hint: check if a Confirm
1908 * node can be created.
1910 * @param dbi debug info
1911 * @param expr the IL assume expression
1913 * we support here only some simple cases:
1918 static ir_node *handle_assume_compare(dbg_info *dbi,
1919 const binary_expression_t *expression)
1921 expression_t *op1 = expression->left;
1922 expression_t *op2 = expression->right;
1923 declaration_t *var2, *var = NULL;
1924 ir_node *res = NULL;
1927 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1929 if (is_local_variable(op1) && is_local_variable(op2)) {
1930 var = op1->reference.declaration;
1931 var2 = op2->reference.declaration;
1933 type_t *const type = skip_typeref(var->type);
1934 ir_mode *const mode = get_ir_mode(type);
1936 ir_node *const irn1 = get_value(var->v.value_number, mode);
1937 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1939 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1940 set_value(var2->v.value_number, res);
1942 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1943 set_value(var->v.value_number, res);
1949 if (is_local_variable(op1) && is_constant_expression(op2)) {
1950 var = op1->reference.declaration;
1952 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1953 cmp_val = get_inversed_pnc(cmp_val);
1954 var = op2->reference.declaration;
1959 type_t *const type = skip_typeref(var->type);
1960 ir_mode *const mode = get_ir_mode(type);
1962 res = get_value(var->v.value_number, mode);
1963 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1964 set_value(var->v.value_number, res);
1970 * Handle the assume optimizer hint.
1972 * @param dbi debug info
1973 * @param expr the IL assume expression
1975 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1976 switch(expression->kind) {
1977 case EXPR_BINARY_EQUAL:
1978 case EXPR_BINARY_NOTEQUAL:
1979 case EXPR_BINARY_LESS:
1980 case EXPR_BINARY_LESSEQUAL:
1981 case EXPR_BINARY_GREATER:
1982 case EXPR_BINARY_GREATEREQUAL:
1983 return handle_assume_compare(dbi, &expression->binary);
1989 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1991 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1992 type_t *type = skip_typeref(expression->base.type);
1994 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1995 return expression_to_addr(expression->value);
1997 const expression_t *value = expression->value;
1999 switch(expression->base.kind) {
2000 case EXPR_UNARY_NEGATE: {
2001 ir_node *value_node = expression_to_firm(value);
2002 ir_mode *mode = get_ir_mode(type);
2003 return new_d_Minus(dbgi, value_node, mode);
2005 case EXPR_UNARY_PLUS:
2006 return expression_to_firm(value);
2007 case EXPR_UNARY_BITWISE_NEGATE: {
2008 ir_node *value_node = expression_to_firm(value);
2009 ir_mode *mode = get_ir_mode(type);
2010 return new_d_Not(dbgi, value_node, mode);
2012 case EXPR_UNARY_NOT: {
2013 ir_node *value_node = _expression_to_firm(value);
2014 value_node = create_conv(dbgi, value_node, mode_b);
2015 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2018 case EXPR_UNARY_DEREFERENCE: {
2019 ir_node *value_node = expression_to_firm(value);
2020 type_t *value_type = skip_typeref(value->base.type);
2021 assert(is_type_pointer(value_type));
2022 type_t *points_to = value_type->pointer.points_to;
2023 return deref_address(dbgi, points_to, value_node);
2025 case EXPR_UNARY_POSTFIX_INCREMENT:
2026 case EXPR_UNARY_POSTFIX_DECREMENT:
2027 case EXPR_UNARY_PREFIX_INCREMENT:
2028 case EXPR_UNARY_PREFIX_DECREMENT:
2029 return create_incdec(expression);
2030 case EXPR_UNARY_CAST: {
2031 ir_node *value_node = expression_to_firm(value);
2032 if (is_type_scalar(type)) {
2033 ir_mode *mode = get_ir_mode(type);
2034 ir_node *node = create_conv(dbgi, value_node, mode);
2035 node = do_strict_conv(dbgi, node);
2038 /* make sure firm type is constructed */
2039 (void) get_ir_type(type);
2043 case EXPR_UNARY_CAST_IMPLICIT: {
2044 ir_node *value_node = expression_to_firm(value);
2045 if (is_type_scalar(type)) {
2046 ir_mode *mode = get_ir_mode(type);
2047 return create_conv(dbgi, value_node, mode);
2052 case EXPR_UNARY_ASSUME:
2053 if (firm_opt.confirm)
2054 return handle_assume(dbgi, value);
2061 panic("invalid UNEXPR type found");
2065 * produces a 0/1 depending of the value of a mode_b node
2067 static ir_node *produce_condition_result(const expression_t *expression,
2070 ir_mode *mode = get_ir_mode(expression->base.type);
2071 ir_node *cur_block = get_cur_block();
2073 ir_node *one_block = new_immBlock();
2074 ir_node *one = new_Const(mode, get_mode_one(mode));
2075 ir_node *jmp_one = new_d_Jmp(dbgi);
2077 ir_node *zero_block = new_immBlock();
2078 ir_node *zero = new_Const(mode, get_mode_null(mode));
2079 ir_node *jmp_zero = new_d_Jmp(dbgi);
2081 set_cur_block(cur_block);
2082 create_condition_evaluation(expression, one_block, zero_block);
2083 mature_immBlock(one_block);
2084 mature_immBlock(zero_block);
2086 ir_node *common_block = new_immBlock();
2087 add_immBlock_pred(common_block, jmp_one);
2088 add_immBlock_pred(common_block, jmp_zero);
2089 mature_immBlock(common_block);
2091 ir_node *in[2] = { one, zero };
2092 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2097 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2098 ir_node *value, type_t *type)
2100 pointer_type_t *const pointer_type = &type->pointer;
2101 type_t *const points_to = pointer_type->points_to;
2102 unsigned elem_size = get_type_size_const(points_to);
2105 if (elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) {
2109 assert(elem_size >= 1);
2113 value = create_conv(dbgi, value, mode_int);
2114 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2115 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2119 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2120 ir_node *left, ir_node *right)
2123 type_t *type_left = skip_typeref(expression->left->base.type);
2124 type_t *type_right = skip_typeref(expression->right->base.type);
2126 expression_kind_t kind = expression->base.kind;
2129 case EXPR_BINARY_SHIFTLEFT:
2130 case EXPR_BINARY_SHIFTRIGHT:
2131 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2132 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2133 mode = get_irn_mode(left);
2134 right = create_conv(dbgi, right, mode_uint);
2137 case EXPR_BINARY_SUB:
2138 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2139 const pointer_type_t *const ptr_type = &type_left->pointer;
2141 mode = get_ir_mode(expression->base.type);
2142 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2143 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2144 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2145 ir_node *const no_mem = new_NoMem();
2146 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2147 mode, op_pin_state_floats);
2148 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2151 case EXPR_BINARY_SUB_ASSIGN:
2152 if (is_type_pointer(type_left)) {
2153 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2154 mode = get_ir_mode(type_left);
2159 case EXPR_BINARY_ADD:
2160 case EXPR_BINARY_ADD_ASSIGN:
2161 if (is_type_pointer(type_left)) {
2162 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2163 mode = get_ir_mode(type_left);
2165 } else if (is_type_pointer(type_right)) {
2166 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2167 mode = get_ir_mode(type_right);
2174 mode = get_irn_mode(right);
2175 left = create_conv(dbgi, left, mode);
2180 case EXPR_BINARY_ADD_ASSIGN:
2181 case EXPR_BINARY_ADD:
2182 return new_d_Add(dbgi, left, right, mode);
2183 case EXPR_BINARY_SUB_ASSIGN:
2184 case EXPR_BINARY_SUB:
2185 return new_d_Sub(dbgi, left, right, mode);
2186 case EXPR_BINARY_MUL_ASSIGN:
2187 case EXPR_BINARY_MUL:
2188 return new_d_Mul(dbgi, left, right, mode);
2189 case EXPR_BINARY_BITWISE_AND:
2190 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2191 return new_d_And(dbgi, left, right, mode);
2192 case EXPR_BINARY_BITWISE_OR:
2193 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2194 return new_d_Or(dbgi, left, right, mode);
2195 case EXPR_BINARY_BITWISE_XOR:
2196 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2197 return new_d_Eor(dbgi, left, right, mode);
2198 case EXPR_BINARY_SHIFTLEFT:
2199 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2200 return new_d_Shl(dbgi, left, right, mode);
2201 case EXPR_BINARY_SHIFTRIGHT:
2202 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2203 if (mode_is_signed(mode)) {
2204 return new_d_Shrs(dbgi, left, right, mode);
2206 return new_d_Shr(dbgi, left, right, mode);
2208 case EXPR_BINARY_DIV:
2209 case EXPR_BINARY_DIV_ASSIGN: {
2210 ir_node *pin = new_Pin(new_NoMem());
2213 if (mode_is_float(mode)) {
2214 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2215 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2217 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2218 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2222 case EXPR_BINARY_MOD:
2223 case EXPR_BINARY_MOD_ASSIGN: {
2224 ir_node *pin = new_Pin(new_NoMem());
2225 assert(!mode_is_float(mode));
2226 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2227 op_pin_state_floats);
2228 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2232 panic("unexpected expression kind");
2236 static ir_node *create_lazy_op(const binary_expression_t *expression)
2238 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2239 type_t *type = expression->base.type;
2240 ir_mode *mode = get_ir_mode(type);
2242 if (is_constant_expression(expression->left)) {
2243 long val = fold_constant(expression->left);
2244 expression_kind_t ekind = expression->base.kind;
2245 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2246 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2247 return expression_to_firm(expression->right);
2249 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2250 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2251 return new_Const(mode, get_mode_one(mode));
2255 return produce_condition_result((const expression_t*) expression, dbgi);
2258 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2259 ir_node *right, ir_mode *mode);
2261 static ir_node *create_assign_binop(const binary_expression_t *expression)
2263 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2264 const expression_t *left_expr = expression->left;
2265 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2266 ir_node *left_addr = expression_to_addr(left_expr);
2267 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2268 ir_node *right = expression_to_firm(expression->right);
2269 ir_node *result = create_op(dbgi, expression, left, right);
2271 result = create_conv(dbgi, result, left_mode);
2272 result = do_strict_conv(dbgi, result);
2274 set_value_for_expression_addr(left_expr, result, left_addr);
2279 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2281 expression_kind_t kind = expression->base.kind;
2284 case EXPR_BINARY_EQUAL:
2285 case EXPR_BINARY_NOTEQUAL:
2286 case EXPR_BINARY_LESS:
2287 case EXPR_BINARY_LESSEQUAL:
2288 case EXPR_BINARY_GREATER:
2289 case EXPR_BINARY_GREATEREQUAL:
2290 case EXPR_BINARY_ISGREATER:
2291 case EXPR_BINARY_ISGREATEREQUAL:
2292 case EXPR_BINARY_ISLESS:
2293 case EXPR_BINARY_ISLESSEQUAL:
2294 case EXPR_BINARY_ISLESSGREATER:
2295 case EXPR_BINARY_ISUNORDERED: {
2296 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2297 ir_node *left = expression_to_firm(expression->left);
2298 ir_node *right = expression_to_firm(expression->right);
2299 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2300 long pnc = get_pnc(kind, expression->left->base.type);
2301 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2304 case EXPR_BINARY_ASSIGN: {
2305 ir_node *addr = expression_to_addr(expression->left);
2306 ir_node *right = expression_to_firm(expression->right);
2307 set_value_for_expression_addr(expression->left, right, addr);
2311 case EXPR_BINARY_ADD:
2312 case EXPR_BINARY_SUB:
2313 case EXPR_BINARY_MUL:
2314 case EXPR_BINARY_DIV:
2315 case EXPR_BINARY_MOD:
2316 case EXPR_BINARY_BITWISE_AND:
2317 case EXPR_BINARY_BITWISE_OR:
2318 case EXPR_BINARY_BITWISE_XOR:
2319 case EXPR_BINARY_SHIFTLEFT:
2320 case EXPR_BINARY_SHIFTRIGHT:
2322 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2323 ir_node *left = expression_to_firm(expression->left);
2324 ir_node *right = expression_to_firm(expression->right);
2325 return create_op(dbgi, expression, left, right);
2327 case EXPR_BINARY_LOGICAL_AND:
2328 case EXPR_BINARY_LOGICAL_OR:
2329 return create_lazy_op(expression);
2330 case EXPR_BINARY_COMMA:
2331 /* create side effects of left side */
2332 (void) expression_to_firm(expression->left);
2333 return _expression_to_firm(expression->right);
2335 case EXPR_BINARY_ADD_ASSIGN:
2336 case EXPR_BINARY_SUB_ASSIGN:
2337 case EXPR_BINARY_MUL_ASSIGN:
2338 case EXPR_BINARY_MOD_ASSIGN:
2339 case EXPR_BINARY_DIV_ASSIGN:
2340 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2341 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2342 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2343 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2344 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2345 return create_assign_binop(expression);
2346 case EXPR_BINARY_BUILTIN_EXPECT:
2347 return _expression_to_firm(expression->left);
2349 panic("TODO binexpr type");
2353 static ir_node *array_access_addr(const array_access_expression_t *expression)
2355 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2356 ir_node *base_addr = expression_to_firm(expression->array_ref);
2357 ir_node *offset = expression_to_firm(expression->index);
2359 type_t *offset_type = skip_typeref(expression->index->base.type);
2361 if (is_type_signed(offset_type)) {
2362 mode = get_ir_mode(type_ssize_t);
2364 mode = get_ir_mode(type_size_t);
2366 offset = create_conv(dbgi, offset, mode);
2368 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2369 assert(is_type_pointer(ref_type));
2370 pointer_type_t *pointer_type = &ref_type->pointer;
2372 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2373 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2374 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2376 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2381 static ir_node *array_access_to_firm(
2382 const array_access_expression_t *expression)
2384 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2385 ir_node *addr = array_access_addr(expression);
2386 type_t *type = revert_automatic_type_conversion(
2387 (const expression_t*) expression);
2388 type = skip_typeref(type);
2390 return deref_address(dbgi, type, addr);
2393 static long get_offsetof_offset(const offsetof_expression_t *expression)
2395 type_t *orig_type = expression->type;
2398 designator_t *designator = expression->designator;
2399 for( ; designator != NULL; designator = designator->next) {
2400 type_t *type = skip_typeref(orig_type);
2401 /* be sure the type is constructed */
2402 (void) get_ir_type(type);
2404 if (designator->symbol != NULL) {
2405 assert(is_type_compound(type));
2406 symbol_t *symbol = designator->symbol;
2408 declaration_t *declaration = type->compound.declaration;
2409 declaration_t *iter = declaration->scope.declarations;
2410 for( ; iter != NULL; iter = iter->next) {
2411 if (iter->symbol == symbol) {
2415 assert(iter != NULL);
2417 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2418 offset += get_entity_offset(iter->v.entity);
2420 orig_type = iter->type;
2422 expression_t *array_index = designator->array_index;
2423 assert(designator->array_index != NULL);
2424 assert(is_type_array(type));
2425 assert(is_type_valid(array_index->base.type));
2427 long index = fold_constant(array_index);
2428 ir_type *arr_type = get_ir_type(type);
2429 ir_type *elem_type = get_array_element_type(arr_type);
2430 long elem_size = get_type_size_bytes(elem_type);
2432 offset += index * elem_size;
2434 orig_type = type->array.element_type;
2441 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2443 ir_mode *mode = get_ir_mode(expression->base.type);
2444 long offset = get_offsetof_offset(expression);
2445 tarval *tv = new_tarval_from_long(offset, mode);
2446 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2448 return new_d_Const(dbgi, mode, tv);
2451 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2452 ir_entity *entity, type_t *type);
2454 static ir_node *compound_literal_to_firm(
2455 const compound_literal_expression_t *expression)
2457 type_t *type = expression->type;
2459 /* create an entity on the stack */
2460 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2462 ident *const id = id_unique("CompLit.%u");
2463 ir_type *const irtype = get_ir_type(type);
2464 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2465 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2466 set_entity_ld_ident(entity, id);
2468 set_entity_variability(entity, variability_uninitialized);
2470 /* create initialisation code */
2471 initializer_t *initializer = expression->initializer;
2472 create_local_initializer(initializer, dbgi, entity, type);
2474 /* create a sel for the compound literal address */
2475 ir_node *frame = get_local_frame(entity);
2476 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2481 * Transform a sizeof expression into Firm code.
2483 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2485 type_t *type = expression->type;
2487 type = expression->tp_expression->base.type;
2488 assert(type != NULL);
2491 type = skip_typeref(type);
2492 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2493 if (is_type_array(type) && type->array.is_vla
2494 && expression->tp_expression != NULL) {
2495 expression_to_firm(expression->tp_expression);
2498 return get_type_size(type);
2502 * Transform an alignof expression into Firm code.
2504 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2506 type_t *type = expression->type;
2508 /* beware: if expression is a variable reference, return the
2509 alignment of the variable. */
2510 const expression_t *tp_expression = expression->tp_expression;
2511 const declaration_t *declaration = expr_is_variable(tp_expression);
2512 if (declaration != NULL) {
2513 /* TODO: get the alignment of this variable. */
2515 type = tp_expression->base.type;
2516 assert(type != NULL);
2519 ir_mode *const mode = get_ir_mode(expression->base.type);
2520 symconst_symbol sym;
2521 sym.type_p = get_ir_type(type);
2522 return new_SymConst(mode, sym, symconst_type_align);
2525 static void init_ir_types(void);
2526 long fold_constant(const expression_t *expression)
2528 bool constant_folding_old = constant_folding;
2529 constant_folding = true;
2533 assert(is_constant_expression(expression));
2535 ir_graph *old_current_ir_graph = current_ir_graph;
2536 if (current_ir_graph == NULL) {
2537 current_ir_graph = get_const_code_irg();
2540 ir_node *cnst = expression_to_firm(expression);
2541 current_ir_graph = old_current_ir_graph;
2543 if (!is_Const(cnst)) {
2544 panic("couldn't fold constant\n");
2547 tarval *tv = get_Const_tarval(cnst);
2548 if (!tarval_is_long(tv)) {
2549 panic("result of constant folding is not integer\n");
2552 constant_folding = constant_folding_old;
2554 return get_tarval_long(tv);
2557 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2559 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2561 /* first try to fold a constant condition */
2562 if (is_constant_expression(expression->condition)) {
2563 long val = fold_constant(expression->condition);
2565 return expression_to_firm(expression->true_expression);
2567 return expression_to_firm(expression->false_expression);
2571 ir_node *cur_block = get_cur_block();
2573 /* create the true block */
2574 ir_node *true_block = new_immBlock();
2576 ir_node *true_val = expression_to_firm(expression->true_expression);
2577 ir_node *true_jmp = new_Jmp();
2579 /* create the false block */
2580 ir_node *false_block = new_immBlock();
2582 ir_node *false_val = expression_to_firm(expression->false_expression);
2583 ir_node *false_jmp = new_Jmp();
2585 /* create the condition evaluation */
2586 set_cur_block(cur_block);
2587 create_condition_evaluation(expression->condition, true_block, false_block);
2588 mature_immBlock(true_block);
2589 mature_immBlock(false_block);
2591 /* create the common block */
2592 ir_node *common_block = new_immBlock();
2593 add_immBlock_pred(common_block, true_jmp);
2594 add_immBlock_pred(common_block, false_jmp);
2595 mature_immBlock(common_block);
2597 /* TODO improve static semantics, so either both or no values are NULL */
2598 if (true_val == NULL || false_val == NULL)
2601 ir_node *in[2] = { true_val, false_val };
2602 ir_mode *mode = get_irn_mode(true_val);
2603 assert(get_irn_mode(false_val) == mode);
2604 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2610 * Returns an IR-node representing the address of a field.
2612 static ir_node *select_addr(const select_expression_t *expression)
2614 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2616 ir_node *compound_addr = expression_to_firm(expression->compound);
2618 /* make sure the type is constructed */
2619 type_t *type = skip_typeref(expression->compound->base.type);
2620 if (is_type_pointer(type)) {
2621 type = type->pointer.points_to;
2623 (void) get_ir_type(type);
2625 declaration_t *entry = expression->compound_entry;
2626 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2627 ir_entity *entity = entry->v.entity;
2629 assert(entity != NULL);
2631 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2636 static ir_node *select_to_firm(const select_expression_t *expression)
2638 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2639 ir_node *addr = select_addr(expression);
2640 type_t *type = revert_automatic_type_conversion(
2641 (const expression_t*) expression);
2642 type = skip_typeref(type);
2644 declaration_t *entry = expression->compound_entry;
2645 type_t *entry_type = skip_typeref(entry->type);
2647 if (entry_type->kind == TYPE_BITFIELD) {
2648 return bitfield_extract_to_firm(expression, addr);
2651 return deref_address(dbgi, type, addr);
2654 /* Values returned by __builtin_classify_type. */
2655 typedef enum gcc_type_class
2661 enumeral_type_class,
2664 reference_type_class,
2668 function_type_class,
2679 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2681 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2687 const atomic_type_t *const atomic_type = &type->atomic;
2688 switch (atomic_type->akind) {
2689 /* should not be reached */
2690 case ATOMIC_TYPE_INVALID:
2694 /* gcc cannot do that */
2695 case ATOMIC_TYPE_VOID:
2696 tc = void_type_class;
2699 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2700 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2701 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2702 case ATOMIC_TYPE_SHORT:
2703 case ATOMIC_TYPE_USHORT:
2704 case ATOMIC_TYPE_INT:
2705 case ATOMIC_TYPE_UINT:
2706 case ATOMIC_TYPE_LONG:
2707 case ATOMIC_TYPE_ULONG:
2708 case ATOMIC_TYPE_LONGLONG:
2709 case ATOMIC_TYPE_ULONGLONG:
2710 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2711 tc = integer_type_class;
2714 case ATOMIC_TYPE_FLOAT:
2715 case ATOMIC_TYPE_DOUBLE:
2716 case ATOMIC_TYPE_LONG_DOUBLE:
2717 tc = real_type_class;
2720 panic("Unexpected atomic type in classify_type_to_firm().");
2723 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2724 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2725 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2726 case TYPE_ARRAY: /* gcc handles this as pointer */
2727 case TYPE_FUNCTION: /* gcc handles this as pointer */
2728 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2729 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2730 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2732 /* gcc handles this as integer */
2733 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2736 /* typedef/typeof should be skipped already */
2743 panic("unexpected TYPE classify_type_to_firm().");
2746 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2747 ir_mode *const mode = mode_int;
2748 tarval *const tv = new_tarval_from_long(tc, mode);
2749 return new_d_Const(dbgi, mode, tv);
2752 static ir_node *function_name_to_firm(
2753 const funcname_expression_t *const expr)
2755 switch(expr->kind) {
2756 case FUNCNAME_FUNCTION:
2757 case FUNCNAME_PRETTY_FUNCTION:
2758 case FUNCNAME_FUNCDNAME:
2759 if (current_function_name == NULL) {
2760 const source_position_t *const src_pos = &expr->base.source_position;
2761 const char *const name = current_function_decl->symbol->string;
2762 const string_t string = { name, strlen(name) + 1 };
2763 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2765 return current_function_name;
2766 case FUNCNAME_FUNCSIG:
2767 if (current_funcsig == NULL) {
2768 const source_position_t *const src_pos = &expr->base.source_position;
2769 ir_entity *ent = get_irg_entity(current_ir_graph);
2770 const char *const name = get_entity_ld_name(ent);
2771 const string_t string = { name, strlen(name) + 1 };
2772 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2774 return current_funcsig;
2776 panic("Unsupported function name");
2779 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2781 statement_t *statement = expr->statement;
2783 assert(statement->kind == STATEMENT_COMPOUND);
2784 return compound_statement_to_firm(&statement->compound);
2787 static ir_node *va_start_expression_to_firm(
2788 const va_start_expression_t *const expr)
2790 ir_type *const method_type = get_ir_type(current_function_decl->type);
2791 int const n = get_method_n_params(method_type) - 1;
2792 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2793 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2794 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2795 ir_node *const no_mem = new_NoMem();
2796 ir_node *const arg_sel =
2797 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2799 ir_node *const cnst = get_type_size(expr->parameter->type);
2800 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2801 set_value_for_expression(expr->ap, add);
2806 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2808 type_t *const type = expr->base.type;
2809 expression_t *const ap_expr = expr->ap;
2810 ir_node *const ap_addr = expression_to_addr(ap_expr);
2811 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2812 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2813 ir_node *const res = deref_address(dbgi, type, ap);
2815 ir_node *const cnst = get_type_size(expr->base.type);
2816 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2818 set_value_for_expression_addr(ap_expr, add, ap_addr);
2823 static ir_node *dereference_addr(const unary_expression_t *const expression)
2825 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2826 return expression_to_firm(expression->value);
2830 * Returns a IR-node representing an lvalue of the given expression.
2832 static ir_node *expression_to_addr(const expression_t *expression)
2834 switch(expression->kind) {
2835 case EXPR_REFERENCE:
2836 return reference_addr(&expression->reference);
2837 case EXPR_ARRAY_ACCESS:
2838 return array_access_addr(&expression->array_access);
2840 return select_addr(&expression->select);
2842 return call_expression_to_firm(&expression->call);
2843 case EXPR_UNARY_DEREFERENCE: {
2844 return dereference_addr(&expression->unary);
2849 panic("trying to get address of non-lvalue");
2852 static ir_node *builtin_constant_to_firm(
2853 const builtin_constant_expression_t *expression)
2855 ir_mode *mode = get_ir_mode(expression->base.type);
2858 if (is_constant_expression(expression->value)) {
2863 return new_Const_long(mode, v);
2866 static ir_node *builtin_prefetch_to_firm(
2867 const builtin_prefetch_expression_t *expression)
2869 ir_node *adr = expression_to_firm(expression->adr);
2870 /* no Firm support for prefetch yet */
2876 * creates firm nodes for an expression. The difference between this function
2877 * and expression_to_firm is, that this version might produce mode_b nodes
2878 * instead of mode_Is.
2880 static ir_node *_expression_to_firm(const expression_t *expression)
2883 if (!constant_folding) {
2884 assert(!expression->base.transformed);
2885 ((expression_t*) expression)->base.transformed = true;
2889 switch(expression->kind) {
2890 case EXPR_CHARACTER_CONSTANT:
2891 return character_constant_to_firm(&expression->conste);
2892 case EXPR_WIDE_CHARACTER_CONSTANT:
2893 return wide_character_constant_to_firm(&expression->conste);
2895 return const_to_firm(&expression->conste);
2896 case EXPR_STRING_LITERAL:
2897 return string_literal_to_firm(&expression->string);
2898 case EXPR_WIDE_STRING_LITERAL:
2899 return wide_string_literal_to_firm(&expression->wide_string);
2900 case EXPR_REFERENCE:
2901 return reference_expression_to_firm(&expression->reference);
2903 return call_expression_to_firm(&expression->call);
2905 return unary_expression_to_firm(&expression->unary);
2907 return binary_expression_to_firm(&expression->binary);
2908 case EXPR_ARRAY_ACCESS:
2909 return array_access_to_firm(&expression->array_access);
2911 return sizeof_to_firm(&expression->typeprop);
2913 return alignof_to_firm(&expression->typeprop);
2914 case EXPR_CONDITIONAL:
2915 return conditional_to_firm(&expression->conditional);
2917 return select_to_firm(&expression->select);
2918 case EXPR_CLASSIFY_TYPE:
2919 return classify_type_to_firm(&expression->classify_type);
2921 return function_name_to_firm(&expression->funcname);
2922 case EXPR_STATEMENT:
2923 return statement_expression_to_firm(&expression->statement);
2925 return va_start_expression_to_firm(&expression->va_starte);
2927 return va_arg_expression_to_firm(&expression->va_arge);
2928 case EXPR_BUILTIN_SYMBOL:
2929 panic("unimplemented expression found");
2930 case EXPR_BUILTIN_CONSTANT_P:
2931 return builtin_constant_to_firm(&expression->builtin_constant);
2932 case EXPR_BUILTIN_PREFETCH:
2933 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2935 return offsetof_to_firm(&expression->offsetofe);
2936 case EXPR_COMPOUND_LITERAL:
2937 return compound_literal_to_firm(&expression->compound_literal);
2943 panic("invalid expression found");
2946 static bool produces_mode_b(const expression_t *expression)
2948 switch (expression->kind) {
2949 case EXPR_BINARY_EQUAL:
2950 case EXPR_BINARY_NOTEQUAL:
2951 case EXPR_BINARY_LESS:
2952 case EXPR_BINARY_LESSEQUAL:
2953 case EXPR_BINARY_GREATER:
2954 case EXPR_BINARY_GREATEREQUAL:
2955 case EXPR_BINARY_ISGREATER:
2956 case EXPR_BINARY_ISGREATEREQUAL:
2957 case EXPR_BINARY_ISLESS:
2958 case EXPR_BINARY_ISLESSEQUAL:
2959 case EXPR_BINARY_ISLESSGREATER:
2960 case EXPR_BINARY_ISUNORDERED:
2961 case EXPR_UNARY_NOT:
2964 case EXPR_BINARY_BUILTIN_EXPECT:
2965 return produces_mode_b(expression->binary.left);
2966 case EXPR_BINARY_COMMA:
2967 return produces_mode_b(expression->binary.right);
2974 static ir_node *expression_to_firm(const expression_t *expression)
2976 if (!produces_mode_b(expression)) {
2977 ir_node *res = _expression_to_firm(expression);
2978 assert(res == NULL || get_irn_mode(res) != mode_b);
2982 if (is_constant_expression(expression)) {
2983 ir_node *res = _expression_to_firm(expression);
2984 ir_mode *mode = get_ir_mode(expression->base.type);
2985 assert(is_Const(res));
2986 if (is_Const_null(res)) {
2987 return new_Const_long(mode, 0);
2989 return new_Const_long(mode, 1);
2993 /* we have to produce a 0/1 from the mode_b expression */
2994 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2995 return produce_condition_result(expression, dbgi);
2998 static ir_node *expression_to_modeb(const expression_t *expression)
3000 ir_node *res = _expression_to_firm(expression);
3001 res = create_conv(NULL, res, mode_b);
3007 * create a short-circuit expression evaluation that tries to construct
3008 * efficient control flow structures for &&, || and ! expressions
3010 static void create_condition_evaluation(const expression_t *expression,
3011 ir_node *true_block,
3012 ir_node *false_block)
3014 switch(expression->kind) {
3015 case EXPR_UNARY_NOT: {
3016 const unary_expression_t *unary_expression = &expression->unary;
3017 create_condition_evaluation(unary_expression->value, false_block,
3021 case EXPR_BINARY_LOGICAL_AND: {
3022 const binary_expression_t *binary_expression = &expression->binary;
3024 ir_node *cur_block = get_cur_block();
3025 ir_node *extra_block = new_immBlock();
3026 set_cur_block(cur_block);
3027 create_condition_evaluation(binary_expression->left, extra_block,
3029 mature_immBlock(extra_block);
3030 set_cur_block(extra_block);
3031 create_condition_evaluation(binary_expression->right, true_block,
3035 case EXPR_BINARY_LOGICAL_OR: {
3036 const binary_expression_t *binary_expression = &expression->binary;
3038 ir_node *cur_block = get_cur_block();
3039 ir_node *extra_block = new_immBlock();
3040 set_cur_block(cur_block);
3041 create_condition_evaluation(binary_expression->left, true_block,
3043 mature_immBlock(extra_block);
3044 set_cur_block(extra_block);
3045 create_condition_evaluation(binary_expression->right, true_block,
3053 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3054 ir_node *condition = expression_to_modeb(expression);
3055 ir_node *cond = new_d_Cond(dbgi, condition);
3056 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3057 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3059 /* set branch prediction info based on __builtin_expect */
3060 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3061 long cnst = fold_constant(expression->binary.right);
3062 cond_jmp_predicate pred;
3065 pred = COND_JMP_PRED_FALSE;
3067 pred = COND_JMP_PRED_TRUE;
3069 set_Cond_jmp_pred(cond, pred);
3072 add_immBlock_pred(true_block, true_proj);
3073 if (false_block != NULL) {
3074 add_immBlock_pred(false_block, false_proj);
3077 set_cur_block(NULL);
3082 static void create_declaration_entity(declaration_t *declaration,
3083 declaration_kind_t declaration_kind,
3084 ir_type *parent_type)
3086 type_t *const type = skip_typeref(declaration->type);
3087 if (is_type_function(type)) {
3088 (void) get_function_entity(declaration);
3092 ident *const id = new_id_from_str(declaration->symbol->string);
3093 ir_type *const irtype = get_ir_type(type);
3094 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3095 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3097 declaration->declaration_kind = (unsigned char) declaration_kind;
3098 declaration->v.entity = entity;
3099 set_entity_variability(entity, variability_uninitialized);
3100 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3101 if (parent_type == get_tls_type())
3102 set_entity_allocation(entity, allocation_automatic);
3103 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3104 set_entity_allocation(entity, allocation_static);
3106 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3107 set_entity_volatility(entity, volatility_is_volatile);
3112 typedef struct type_path_entry_t type_path_entry_t;
3113 struct type_path_entry_t {
3115 ir_initializer_t *initializer;
3117 declaration_t *compound_entry;
3120 typedef struct type_path_t type_path_t;
3121 struct type_path_t {
3122 type_path_entry_t *path;
3127 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3129 size_t len = ARR_LEN(path->path);
3131 for(size_t i = 0; i < len; ++i) {
3132 const type_path_entry_t *entry = & path->path[i];
3134 type_t *type = skip_typeref(entry->type);
3135 if (is_type_compound(type)) {
3136 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3137 } else if (is_type_array(type)) {
3138 fprintf(stderr, "[%zd]", entry->index);
3140 fprintf(stderr, "-INVALID-");
3143 fprintf(stderr, " (");
3144 print_type(path->top_type);
3145 fprintf(stderr, ")");
3148 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3150 size_t len = ARR_LEN(path->path);
3152 return & path->path[len-1];
3155 static type_path_entry_t *append_to_type_path(type_path_t *path)
3157 size_t len = ARR_LEN(path->path);
3158 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3160 type_path_entry_t *result = & path->path[len];
3161 memset(result, 0, sizeof(result[0]));
3165 static size_t get_compound_size(const compound_type_t *type)
3167 declaration_t *declaration = type->declaration;
3168 declaration_t *member = declaration->scope.declarations;
3170 for( ; member != NULL; member = member->next) {
3173 /* TODO: cache results? */
3178 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3180 type_t *orig_top_type = path->top_type;
3181 type_t *top_type = skip_typeref(orig_top_type);
3183 assert(is_type_compound(top_type) || is_type_array(top_type));
3185 if (ARR_LEN(path->path) == 0) {
3188 type_path_entry_t *top = get_type_path_top(path);
3189 ir_initializer_t *initializer = top->initializer;
3190 return get_initializer_compound_value(initializer, top->index);
3194 static void descend_into_subtype(type_path_t *path)
3196 type_t *orig_top_type = path->top_type;
3197 type_t *top_type = skip_typeref(orig_top_type);
3199 assert(is_type_compound(top_type) || is_type_array(top_type));
3201 ir_initializer_t *initializer = get_initializer_entry(path);
3203 type_path_entry_t *top = append_to_type_path(path);
3204 top->type = top_type;
3208 if (is_type_compound(top_type)) {
3209 declaration_t *declaration = top_type->compound.declaration;
3210 declaration_t *entry = declaration->scope.declarations;
3212 top->compound_entry = entry;
3214 len = get_compound_size(&top_type->compound);
3216 path->top_type = entry->type;
3218 assert(is_type_array(top_type));
3219 assert(top_type->array.size > 0);
3222 path->top_type = top_type->array.element_type;
3223 len = top_type->array.size;
3225 if (initializer == NULL
3226 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3227 initializer = create_initializer_compound(len);
3228 /* we have to set the entry at the 2nd latest path entry... */
3229 size_t path_len = ARR_LEN(path->path);
3230 assert(path_len >= 1);
3232 type_path_entry_t *entry = & path->path[path_len-2];
3233 ir_initializer_t *tinitializer = entry->initializer;
3234 set_initializer_compound_value(tinitializer, entry->index,
3238 top->initializer = initializer;
3241 static void ascend_from_subtype(type_path_t *path)
3243 type_path_entry_t *top = get_type_path_top(path);
3245 path->top_type = top->type;
3247 size_t len = ARR_LEN(path->path);
3248 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3251 static void walk_designator(type_path_t *path, const designator_t *designator)
3253 /* designators start at current object type */
3254 ARR_RESIZE(type_path_entry_t, path->path, 1);
3256 for( ; designator != NULL; designator = designator->next) {
3257 type_path_entry_t *top = get_type_path_top(path);
3258 type_t *orig_type = top->type;
3259 type_t *type = skip_typeref(orig_type);
3261 if (designator->symbol != NULL) {
3262 assert(is_type_compound(type));
3264 symbol_t *symbol = designator->symbol;
3266 declaration_t *declaration = type->compound.declaration;
3267 declaration_t *iter = declaration->scope.declarations;
3268 for( ; iter != NULL; iter = iter->next, ++index) {
3269 if (iter->symbol == symbol) {
3273 assert(iter != NULL);
3275 top->type = orig_type;
3276 top->compound_entry = iter;
3278 orig_type = iter->type;
3280 expression_t *array_index = designator->array_index;
3281 assert(designator->array_index != NULL);
3282 assert(is_type_array(type));
3283 assert(is_type_valid(array_index->base.type));
3285 long index = fold_constant(array_index);
3288 if (type->array.size_constant == 1) {
3289 long array_size = type->array.size;
3290 assert(index < array_size);
3294 top->type = orig_type;
3295 top->index = (size_t) index;
3296 orig_type = type->array.element_type;
3298 path->top_type = orig_type;
3300 if (designator->next != NULL) {
3301 descend_into_subtype(path);
3305 path->invalid = false;
3308 static void advance_current_object(type_path_t *path)
3310 if (path->invalid) {
3311 /* TODO: handle this... */
3312 panic("invalid initializer in ast2firm (excessive elements)");
3316 type_path_entry_t *top = get_type_path_top(path);
3318 type_t *type = skip_typeref(top->type);
3319 if (is_type_union(type)) {
3320 top->compound_entry = NULL;
3321 } else if (is_type_struct(type)) {
3322 declaration_t *entry = top->compound_entry;
3325 entry = entry->next;
3326 top->compound_entry = entry;
3327 if (entry != NULL) {
3328 path->top_type = entry->type;
3332 assert(is_type_array(type));
3335 if (!type->array.size_constant || top->index < type->array.size) {
3340 /* we're past the last member of the current sub-aggregate, try if we
3341 * can ascend in the type hierarchy and continue with another subobject */
3342 size_t len = ARR_LEN(path->path);
3345 ascend_from_subtype(path);
3346 advance_current_object(path);
3348 path->invalid = true;
3353 static ir_initializer_t *create_ir_initializer(
3354 const initializer_t *initializer, type_t *type);
3356 static ir_initializer_t *create_ir_initializer_value(
3357 const initializer_value_t *initializer)
3359 if (is_type_compound(initializer->value->base.type)) {
3360 panic("initializer creation for compounds not implemented yet");
3362 ir_node *value = expression_to_firm(initializer->value);
3363 return create_initializer_const(value);
3366 static ir_initializer_t *create_ir_initializer_list(
3367 const initializer_list_t *initializer, type_t *type)
3370 memset(&path, 0, sizeof(path));
3371 path.top_type = type;
3372 path.path = NEW_ARR_F(type_path_entry_t, 0);
3374 descend_into_subtype(&path);
3376 for(size_t i = 0; i < initializer->len; ++i) {
3377 const initializer_t *sub_initializer = initializer->initializers[i];
3379 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3380 walk_designator(&path, sub_initializer->designator.designator);
3384 if (sub_initializer->kind == INITIALIZER_VALUE) {
3385 /* we might have to descend into types until we're at a scalar
3388 type_t *orig_top_type = path.top_type;
3389 type_t *top_type = skip_typeref(orig_top_type);
3391 if (is_type_scalar(top_type))
3393 descend_into_subtype(&path);
3397 ir_initializer_t *sub_irinitializer
3398 = create_ir_initializer(sub_initializer, path.top_type);
3400 size_t path_len = ARR_LEN(path.path);
3401 assert(path_len >= 1);
3402 type_path_entry_t *entry = & path.path[path_len-1];
3403 ir_initializer_t *tinitializer = entry->initializer;
3404 set_initializer_compound_value(tinitializer, entry->index,
3407 advance_current_object(&path);
3410 assert(ARR_LEN(path.path) >= 1);
3411 ir_initializer_t *result = path.path[0].initializer;
3412 DEL_ARR_F(path.path);
3417 static ir_initializer_t *create_ir_initializer_string(
3418 const initializer_string_t *initializer, type_t *type)
3420 type = skip_typeref(type);
3422 size_t string_len = initializer->string.size;
3423 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3424 size_t len = type->array.size;
3425 ir_initializer_t *irinitializer = create_initializer_compound(len);
3427 const char *string = initializer->string.begin;
3428 ir_mode *mode = get_ir_mode(type->array.element_type);
3430 for(size_t i = 0; i < len; ++i) {
3435 tarval *tv = new_tarval_from_long(c, mode);
3436 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3438 set_initializer_compound_value(irinitializer, i, char_initializer);
3441 return irinitializer;
3444 static ir_initializer_t *create_ir_initializer_wide_string(
3445 const initializer_wide_string_t *initializer, type_t *type)
3447 size_t string_len = initializer->string.size;
3448 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3449 size_t len = type->array.size;
3450 ir_initializer_t *irinitializer = create_initializer_compound(len);
3452 const wchar_rep_t *string = initializer->string.begin;
3453 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3455 for(size_t i = 0; i < len; ++i) {
3457 if (i < string_len) {
3460 tarval *tv = new_tarval_from_long(c, mode);
3461 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3463 set_initializer_compound_value(irinitializer, i, char_initializer);
3466 return irinitializer;
3469 static ir_initializer_t *create_ir_initializer(
3470 const initializer_t *initializer, type_t *type)
3472 switch(initializer->kind) {
3473 case INITIALIZER_STRING:
3474 return create_ir_initializer_string(&initializer->string, type);
3476 case INITIALIZER_WIDE_STRING:
3477 return create_ir_initializer_wide_string(&initializer->wide_string,
3480 case INITIALIZER_LIST:
3481 return create_ir_initializer_list(&initializer->list, type);
3483 case INITIALIZER_VALUE:
3484 return create_ir_initializer_value(&initializer->value);
3486 case INITIALIZER_DESIGNATOR:
3487 panic("unexpected designator initializer found");
3489 panic("unknown initializer");
3492 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3495 if (is_atomic_type(type)) {
3496 ir_mode *mode = get_type_mode(type);
3497 tarval *zero = get_mode_null(mode);
3498 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3500 /* TODO: bitfields */
3501 ir_node *mem = get_store();
3502 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3503 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3506 assert(is_compound_type(type));
3509 if (is_Array_type(type)) {
3510 assert(has_array_upper_bound(type, 0));
3511 n_members = get_array_upper_bound_int(type, 0);
3513 n_members = get_compound_n_members(type);
3516 for(int i = 0; i < n_members; ++i) {
3519 if (is_Array_type(type)) {
3520 ir_entity *entity = get_array_element_entity(type);
3521 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3522 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3523 ir_node *in[1] = { cnst };
3524 irtype = get_array_element_type(type);
3525 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3527 ir_entity *member = get_compound_member(type, i);
3529 irtype = get_entity_type(member);
3530 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3533 create_dynamic_null_initializer(irtype, dbgi, addr);
3538 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3539 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3541 switch(get_initializer_kind(initializer)) {
3542 case IR_INITIALIZER_NULL: {
3543 create_dynamic_null_initializer(type, dbgi, base_addr);
3546 case IR_INITIALIZER_CONST: {
3547 ir_node *node = get_initializer_const_value(initializer);
3548 ir_mode *mode = get_irn_mode(node);
3549 assert(get_type_mode(type) == mode);
3551 /* TODO: bitfields... */
3552 ir_node *mem = get_store();
3553 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3554 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3558 case IR_INITIALIZER_TARVAL: {
3559 tarval *tv = get_initializer_tarval_value(initializer);
3560 ir_mode *mode = get_tarval_mode(tv);
3561 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3562 assert(get_type_mode(type) == mode);
3564 /* TODO: bitfields... */
3565 ir_node *mem = get_store();
3566 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3567 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3571 case IR_INITIALIZER_COMPOUND: {
3572 assert(is_compound_type(type));
3574 if (is_Array_type(type)) {
3575 assert(has_array_upper_bound(type, 0));
3576 n_members = get_array_upper_bound_int(type, 0);
3578 n_members = get_compound_n_members(type);
3581 if (get_initializer_compound_n_entries(initializer)
3582 != (unsigned) n_members)
3583 panic("initializer doesn't match compound type");
3585 for(int i = 0; i < n_members; ++i) {
3588 if (is_Array_type(type)) {
3589 ir_entity *entity = get_array_element_entity(type);
3590 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3591 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3592 ir_node *in[1] = { cnst };
3593 irtype = get_array_element_type(type);
3594 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3596 ir_entity *member = get_compound_member(type, i);
3598 irtype = get_entity_type(member);
3599 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3602 ir_initializer_t *sub_init
3603 = get_initializer_compound_value(initializer, i);
3605 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3611 panic("invalid IR_INITIALIZER found");
3614 static void create_dynamic_initializer(ir_initializer_t *initializer,
3615 dbg_info *dbgi, ir_entity *entity)
3617 ir_node *frame = get_local_frame(entity);
3618 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3619 ir_type *type = get_entity_type(entity);
3621 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3624 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3625 ir_entity *entity, type_t *type)
3627 ir_node *memory = get_store();
3628 ir_node *nomem = new_NoMem();
3629 ir_node *frame = get_irg_frame(current_ir_graph);
3630 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3632 if (initializer->kind == INITIALIZER_VALUE) {
3633 initializer_value_t *initializer_value = &initializer->value;
3635 ir_node *value = expression_to_firm(initializer_value->value);
3636 type = skip_typeref(type);
3637 assign_value(dbgi, addr, type, value);
3641 if (!is_constant_initializer(initializer)) {
3642 ir_initializer_t *irinitializer
3643 = create_ir_initializer(initializer, type);
3645 create_dynamic_initializer(irinitializer, dbgi, entity);
3649 /* create the ir_initializer */
3650 ir_graph *const old_current_ir_graph = current_ir_graph;
3651 current_ir_graph = get_const_code_irg();
3653 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3655 assert(current_ir_graph == get_const_code_irg());
3656 current_ir_graph = old_current_ir_graph;
3658 /* create a "template" entity which is copied to the entity on the stack */
3659 ident *const id = id_unique("initializer.%u");
3660 ir_type *const irtype = get_ir_type(type);
3661 ir_type *const global_type = get_glob_type();
3662 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3663 set_entity_ld_ident(init_entity, id);
3665 set_entity_variability(init_entity, variability_initialized);
3666 set_entity_visibility(init_entity, visibility_local);
3667 set_entity_allocation(init_entity, allocation_static);
3669 set_entity_initializer(init_entity, irinitializer);
3671 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3672 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3674 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3675 set_store(copyb_mem);
3678 static void create_initializer_local_variable_entity(declaration_t *declaration)
3680 initializer_t *initializer = declaration->init.initializer;
3681 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3682 ir_entity *entity = declaration->v.entity;
3683 type_t *type = declaration->type;
3684 create_local_initializer(initializer, dbgi, entity, type);
3687 static void create_declaration_initializer(declaration_t *declaration)
3689 initializer_t *initializer = declaration->init.initializer;
3690 if (initializer == NULL)
3693 declaration_kind_t declaration_kind
3694 = (declaration_kind_t) declaration->declaration_kind;
3695 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3696 create_initializer_local_variable_entity(declaration);
3700 type_t *type = skip_typeref(declaration->type);
3702 if (initializer->kind == INITIALIZER_VALUE) {
3703 initializer_value_t *initializer_value = &initializer->value;
3705 = get_dbg_info(&declaration->source_position);
3707 ir_node *value = expression_to_firm(initializer_value->value);
3708 value = do_strict_conv(dbgi, value);
3710 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3711 set_value(declaration->v.value_number, value);
3713 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3715 ir_entity *entity = declaration->v.entity;
3717 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3718 set_entity_variability(entity, variability_constant);
3720 set_entity_variability(entity, variability_initialized);
3722 set_atomic_ent_value(entity, value);
3725 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3726 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3728 ir_entity *entity = declaration->v.entity;
3729 ir_initializer_t *irinitializer
3730 = create_ir_initializer(initializer, type);
3732 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3733 set_entity_variability(entity, variability_constant);
3735 set_entity_variability(entity, variability_initialized);
3737 set_entity_initializer(entity, irinitializer);
3741 static void create_variable_length_array(declaration_t *declaration)
3743 /* initializers are not allowed for VLAs */
3744 assert(declaration->init.initializer == NULL);
3746 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3747 declaration->v.vla_base = NULL;
3749 /* TODO: record VLA somewhere so we create the free node when we leave
3753 static void allocate_variable_length_array(declaration_t *declaration)
3755 /* initializers are not allowed for VLAs */
3756 assert(declaration->init.initializer == NULL);
3757 assert(get_cur_block() != NULL);
3759 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3760 type_t *type = declaration->type;
3761 ir_type *el_type = get_ir_type(type->array.element_type);
3763 /* make sure size_node is calculated */
3764 get_type_size(type);
3765 ir_node *elems = type->array.size_node;
3766 ir_node *mem = get_store();
3767 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3769 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3770 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3773 assert(declaration->declaration_kind
3774 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3775 declaration->v.vla_base = addr;
3779 * Creates a Firm local variable from a declaration.
3781 static void create_local_variable(declaration_t *declaration)
3783 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3785 bool needs_entity = declaration->address_taken;
3786 type_t *type = skip_typeref(declaration->type);
3788 /* is it a variable length array? */
3789 if (is_type_array(type) && !type->array.size_constant) {
3790 create_variable_length_array(declaration);
3792 } else if (is_type_array(type) || is_type_compound(type)) {
3793 needs_entity = true;
3794 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3795 needs_entity = true;
3799 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3800 create_declaration_entity(declaration,
3801 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3804 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3805 declaration->v.value_number = next_value_number_function;
3806 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3807 ++next_value_number_function;
3811 static void create_local_static_variable(declaration_t *declaration)
3813 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3815 type_t *const type = skip_typeref(declaration->type);
3816 ir_type *const global_type = get_glob_type();
3817 ir_type *const irtype = get_ir_type(type);
3818 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3820 size_t l = strlen(declaration->symbol->string);
3821 char buf[l + sizeof(".%u")];
3822 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3823 ident *const id = id_unique(buf);
3825 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3827 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3828 set_entity_volatility(entity, volatility_is_volatile);
3831 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3832 declaration->v.entity = entity;
3833 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3834 set_entity_variability(entity, variability_uninitialized);
3835 set_entity_visibility(entity, visibility_local);
3836 set_entity_allocation(entity, allocation_static);
3838 ir_graph *const old_current_ir_graph = current_ir_graph;
3839 current_ir_graph = get_const_code_irg();
3841 create_declaration_initializer(declaration);
3843 assert(current_ir_graph == get_const_code_irg());
3844 current_ir_graph = old_current_ir_graph;
3849 static void return_statement_to_firm(return_statement_t *statement)
3851 if (get_cur_block() == NULL)
3854 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3855 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3860 if (get_method_n_ress(func_irtype) > 0) {
3861 ir_type *res_type = get_method_res_type(func_irtype, 0);
3863 if (statement->value != NULL) {
3864 ir_node *node = expression_to_firm(statement->value);
3865 node = do_strict_conv(dbgi, node);
3869 if (is_compound_type(res_type)) {
3872 mode = get_type_mode(res_type);
3874 in[0] = new_Unknown(mode);
3878 /* build return_value for its side effects */
3879 if (statement->value != NULL) {
3880 expression_to_firm(statement->value);
3885 ir_node *store = get_store();
3886 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3888 ir_node *end_block = get_irg_end_block(current_ir_graph);
3889 add_immBlock_pred(end_block, ret);
3891 set_cur_block(NULL);
3894 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3896 if (get_cur_block() == NULL)
3899 return expression_to_firm(statement->expression);
3902 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3904 declaration_t *declaration = compound->scope.declarations;
3905 for( ; declaration != NULL; declaration = declaration->next) {
3906 create_local_declaration(declaration);
3909 ir_node *result = NULL;
3910 statement_t *statement = compound->statements;
3911 for( ; statement != NULL; statement = statement->base.next) {
3912 if (statement->base.next == NULL
3913 && statement->kind == STATEMENT_EXPRESSION) {
3914 result = expression_statement_to_firm(
3915 &statement->expression);
3918 statement_to_firm(statement);
3924 static void create_global_variable(declaration_t *declaration)
3928 switch ((storage_class_tag_t)declaration->storage_class) {
3929 case STORAGE_CLASS_STATIC:
3930 vis = visibility_local;
3933 case STORAGE_CLASS_EXTERN:
3934 vis = visibility_external_allocated;
3937 case STORAGE_CLASS_NONE:
3938 vis = visibility_external_visible;
3941 case STORAGE_CLASS_THREAD:
3942 vis = visibility_external_visible;
3945 case STORAGE_CLASS_THREAD_EXTERN:
3946 vis = visibility_external_allocated;
3949 case STORAGE_CLASS_THREAD_STATIC:
3950 vis = visibility_local;
3954 var_type = get_tls_type();
3958 var_type = get_glob_type();
3962 create_declaration_entity(declaration,
3963 DECLARATION_KIND_GLOBAL_VARIABLE,
3965 if (!is_type_function(skip_typeref(declaration->type))) {
3966 set_entity_visibility(declaration->v.entity, vis);
3971 case STORAGE_CLASS_TYPEDEF:
3972 case STORAGE_CLASS_AUTO:
3973 case STORAGE_CLASS_REGISTER:
3974 case STORAGE_CLASS_ENUM_ENTRY:
3977 panic("Invalid storage class for global variable");
3980 static void create_local_declaration(declaration_t *declaration)
3982 if (declaration->namespc != NAMESPACE_NORMAL)
3984 /* construct type */
3985 (void) get_ir_type(declaration->type);
3986 if (declaration->symbol == NULL) {
3990 type_t *type = skip_typeref(declaration->type);
3992 switch ((storage_class_tag_t) declaration->storage_class) {
3993 case STORAGE_CLASS_STATIC:
3994 create_local_static_variable(declaration);
3996 case STORAGE_CLASS_EXTERN:
3997 create_global_variable(declaration);
3998 create_declaration_initializer(declaration);
4000 case STORAGE_CLASS_NONE:
4001 case STORAGE_CLASS_AUTO:
4002 case STORAGE_CLASS_REGISTER:
4003 if (is_type_function(type)) {
4004 if (declaration->init.statement != NULL) {
4005 panic("nested functions not supported yet");
4007 get_function_entity(declaration);
4010 create_local_variable(declaration);
4013 case STORAGE_CLASS_ENUM_ENTRY:
4014 /* should already be handled */
4015 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4017 case STORAGE_CLASS_TYPEDEF:
4018 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4020 case STORAGE_CLASS_THREAD:
4021 case STORAGE_CLASS_THREAD_EXTERN:
4022 case STORAGE_CLASS_THREAD_STATIC:
4025 panic("invalid storage class found");
4028 static void initialize_local_declaration(declaration_t *declaration)
4030 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4033 switch ((declaration_kind_t) declaration->declaration_kind) {
4034 case DECLARATION_KIND_LOCAL_VARIABLE:
4035 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4036 create_declaration_initializer(declaration);
4039 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4040 allocate_variable_length_array(declaration);
4043 case DECLARATION_KIND_LABEL_BLOCK:
4044 case DECLARATION_KIND_COMPOUND_MEMBER:
4045 case DECLARATION_KIND_GLOBAL_VARIABLE:
4046 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4047 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4048 case DECLARATION_KIND_FUNCTION:
4049 case DECLARATION_KIND_TYPE:
4050 case DECLARATION_KIND_ENUM_ENTRY:
4053 case DECLARATION_KIND_UNKNOWN:
4054 panic("can't initialize unknwon declaration");
4056 panic("invalid declaration kind");
4059 static void declaration_statement_to_firm(declaration_statement_t *statement)
4061 declaration_t *declaration = statement->declarations_begin;
4062 declaration_t *end = statement->declarations_end->next;
4063 for( ; declaration != end; declaration = declaration->next) {
4064 if (declaration->namespc != NAMESPACE_NORMAL)
4066 initialize_local_declaration(declaration);
4070 static void if_statement_to_firm(if_statement_t *statement)
4072 ir_node *cur_block = get_cur_block();
4074 ir_node *fallthrough_block = NULL;
4076 /* the true (blocks) */
4077 ir_node *true_block = NULL;
4078 if (statement->true_statement != NULL) {
4079 true_block = new_immBlock();
4080 statement_to_firm(statement->true_statement);
4081 if (get_cur_block() != NULL) {
4082 ir_node *jmp = new_Jmp();
4083 if (fallthrough_block == NULL)
4084 fallthrough_block = new_immBlock();
4085 add_immBlock_pred(fallthrough_block, jmp);
4089 /* the false (blocks) */
4090 ir_node *false_block = NULL;
4091 if (statement->false_statement != NULL) {
4092 false_block = new_immBlock();
4094 statement_to_firm(statement->false_statement);
4095 if (get_cur_block() != NULL) {
4096 ir_node *jmp = new_Jmp();
4097 if (fallthrough_block == NULL)
4098 fallthrough_block = new_immBlock();
4099 add_immBlock_pred(fallthrough_block, jmp);
4103 /* create the condition */
4104 if (cur_block != NULL) {
4105 if (true_block == NULL || false_block == NULL) {
4106 if (fallthrough_block == NULL)
4107 fallthrough_block = new_immBlock();
4108 if (true_block == NULL)
4109 true_block = fallthrough_block;
4110 if (false_block == NULL)
4111 false_block = fallthrough_block;
4114 set_cur_block(cur_block);
4115 create_condition_evaluation(statement->condition, true_block,
4119 mature_immBlock(true_block);
4120 if (false_block != fallthrough_block) {
4121 mature_immBlock(false_block);
4123 if (fallthrough_block != NULL) {
4124 mature_immBlock(fallthrough_block);
4127 set_cur_block(fallthrough_block);
4130 static void while_statement_to_firm(while_statement_t *statement)
4132 ir_node *jmp = NULL;
4133 if (get_cur_block() != NULL) {
4137 /* create the header block */
4138 ir_node *header_block = new_immBlock();
4140 add_immBlock_pred(header_block, jmp);
4144 ir_node *old_continue_label = continue_label;
4145 ir_node *old_break_label = break_label;
4146 continue_label = header_block;
4149 ir_node *body_block = new_immBlock();
4150 statement_to_firm(statement->body);
4151 ir_node *false_block = break_label;
4153 assert(continue_label == header_block);
4154 continue_label = old_continue_label;
4155 break_label = old_break_label;
4157 if (get_cur_block() != NULL) {
4159 add_immBlock_pred(header_block, jmp);
4162 /* shortcut for while(true) */
4163 if (is_constant_expression(statement->condition)
4164 && fold_constant(statement->condition) != 0) {
4165 set_cur_block(header_block);
4166 ir_node *header_jmp = new_Jmp();
4167 add_immBlock_pred(body_block, header_jmp);
4169 keep_alive(body_block);
4171 if (false_block == NULL) {
4172 false_block = new_immBlock();
4175 /* create the condition */
4176 set_cur_block(header_block);
4178 create_condition_evaluation(statement->condition, body_block,
4182 mature_immBlock(body_block);
4183 mature_immBlock(header_block);
4184 if (false_block != NULL) {
4185 mature_immBlock(false_block);
4188 set_cur_block(false_block);
4191 static void do_while_statement_to_firm(do_while_statement_t *statement)
4193 ir_node *jmp = NULL;
4194 if (get_cur_block() != NULL) {
4198 /* create the header block */
4199 ir_node *header_block = new_immBlock();
4202 ir_node *body_block = new_immBlock();
4204 add_immBlock_pred(body_block, jmp);
4207 ir_node *old_continue_label = continue_label;
4208 ir_node *old_break_label = break_label;
4209 continue_label = header_block;
4212 statement_to_firm(statement->body);
4213 ir_node *false_block = break_label;
4215 assert(continue_label == header_block);
4216 continue_label = old_continue_label;
4217 break_label = old_break_label;
4219 if (get_cur_block() != NULL) {
4220 ir_node *body_jmp = new_Jmp();
4221 add_immBlock_pred(header_block, body_jmp);
4222 mature_immBlock(header_block);
4225 if (false_block == NULL) {
4226 false_block = new_immBlock();
4229 /* create the condition */
4230 set_cur_block(header_block);
4232 create_condition_evaluation(statement->condition, body_block, false_block);
4233 mature_immBlock(body_block);
4234 mature_immBlock(header_block);
4235 if (false_block != NULL) {
4236 mature_immBlock(false_block);
4239 set_cur_block(false_block);
4242 static void for_statement_to_firm(for_statement_t *statement)
4244 ir_node *jmp = NULL;
4246 /* create declarations */
4247 declaration_t *declaration = statement->scope.declarations;
4248 for( ; declaration != NULL; declaration = declaration->next) {
4249 create_local_declaration(declaration);
4251 declaration = statement->scope.declarations;
4252 for( ; declaration != NULL; declaration = declaration->next) {
4253 initialize_local_declaration(declaration);
4256 if (get_cur_block() != NULL) {
4257 if (statement->initialisation != NULL) {
4258 expression_to_firm(statement->initialisation);
4265 /* create the step block */
4266 ir_node *const step_block = new_immBlock();
4267 if (statement->step != NULL) {
4268 expression_to_firm(statement->step);
4270 ir_node *const step_jmp = new_Jmp();
4272 /* create the header block */
4273 ir_node *const header_block = new_immBlock();
4275 add_immBlock_pred(header_block, jmp);
4277 add_immBlock_pred(header_block, step_jmp);
4279 /* the false block */
4280 ir_node *const false_block = new_immBlock();
4283 ir_node * body_block;
4284 if (statement->body != NULL) {
4285 ir_node *const old_continue_label = continue_label;
4286 ir_node *const old_break_label = break_label;
4287 continue_label = step_block;
4288 break_label = false_block;
4290 body_block = new_immBlock();
4291 statement_to_firm(statement->body);
4293 assert(continue_label == step_block);
4294 assert(break_label == false_block);
4295 continue_label = old_continue_label;
4296 break_label = old_break_label;
4298 if (get_cur_block() != NULL) {
4300 add_immBlock_pred(step_block, jmp);
4303 body_block = step_block;
4306 /* create the condition */
4307 set_cur_block(header_block);
4308 if (statement->condition != NULL) {
4309 create_condition_evaluation(statement->condition, body_block,
4312 keep_alive(header_block);
4314 add_immBlock_pred(body_block, jmp);
4317 mature_immBlock(body_block);
4318 mature_immBlock(false_block);
4319 mature_immBlock(step_block);
4320 mature_immBlock(header_block);
4321 mature_immBlock(false_block);
4323 set_cur_block(false_block);
4326 static void create_jump_statement(const statement_t *statement,
4327 ir_node *target_block)
4329 if (get_cur_block() == NULL)
4332 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4333 ir_node *jump = new_d_Jmp(dbgi);
4334 add_immBlock_pred(target_block, jump);
4336 set_cur_block(NULL);
4339 static ir_node *get_break_label(void)
4341 if (break_label == NULL) {
4342 ir_node *cur_block = get_cur_block();
4343 break_label = new_immBlock();
4344 set_cur_block(cur_block);
4349 static void switch_statement_to_firm(const switch_statement_t *statement)
4351 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4353 ir_node *expression = expression_to_firm(statement->expression);
4354 ir_node *cond = new_d_Cond(dbgi, expression);
4356 set_cur_block(NULL);
4358 ir_node *const old_switch_cond = current_switch_cond;
4359 ir_node *const old_break_label = break_label;
4360 const bool old_saw_default_label = saw_default_label;
4361 saw_default_label = false;
4362 current_switch_cond = cond;
4365 if (statement->body != NULL) {
4366 statement_to_firm(statement->body);
4369 if (get_cur_block() != NULL) {
4370 ir_node *jmp = new_Jmp();
4371 add_immBlock_pred(get_break_label(), jmp);
4374 if (!saw_default_label) {
4375 set_cur_block(get_nodes_block(cond));
4376 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4377 MAGIC_DEFAULT_PN_NUMBER);
4378 add_immBlock_pred(get_break_label(), proj);
4381 if (break_label != NULL) {
4382 mature_immBlock(break_label);
4384 set_cur_block(break_label);
4386 assert(current_switch_cond == cond);
4387 current_switch_cond = old_switch_cond;
4388 break_label = old_break_label;
4389 saw_default_label = old_saw_default_label;
4392 static void case_label_to_firm(const case_label_statement_t *statement)
4394 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4396 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4398 /* let's create a node and hope firm constant folding creates a Const
4401 ir_node *old_block = get_nodes_block(current_switch_cond);
4402 ir_node *block = new_immBlock();
4404 set_cur_block(old_block);
4405 if (statement->expression != NULL) {
4406 long start_pn = fold_constant(statement->expression);
4407 long end_pn = start_pn;
4408 if (statement->end_range != NULL) {
4409 end_pn = fold_constant(statement->end_range);
4411 assert(start_pn <= end_pn);
4412 /* create jumps for all cases in the given range */
4413 for (long pn = start_pn; pn <= end_pn; ++pn) {
4414 if (pn == MAGIC_DEFAULT_PN_NUMBER) {
4415 /* oops someone detected our cheating... */
4416 panic("magic default pn used");
4418 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4419 add_immBlock_pred(block, proj);
4422 saw_default_label = true;
4423 proj = new_d_defaultProj(dbgi, current_switch_cond,
4424 MAGIC_DEFAULT_PN_NUMBER);
4426 add_immBlock_pred(block, proj);
4429 if (fallthrough != NULL) {
4430 add_immBlock_pred(block, fallthrough);
4432 mature_immBlock(block);
4433 set_cur_block(block);
4435 if (statement->statement != NULL) {
4436 statement_to_firm(statement->statement);
4440 static ir_node *get_label_block(declaration_t *label)
4442 assert(label->namespc == NAMESPACE_LABEL);
4444 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4445 return label->v.block;
4447 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4449 ir_node *old_cur_block = get_cur_block();
4450 ir_node *block = new_immBlock();
4451 set_cur_block(old_cur_block);
4453 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4454 label->v.block = block;
4456 ARR_APP1(ir_node *, imature_blocks, block);
4461 static void label_to_firm(const label_statement_t *statement)
4463 ir_node *block = get_label_block(statement->label);
4465 if (get_cur_block() != NULL) {
4466 ir_node *jmp = new_Jmp();
4467 add_immBlock_pred(block, jmp);
4470 set_cur_block(block);
4473 if (statement->statement != NULL) {
4474 statement_to_firm(statement->statement);
4478 static void goto_to_firm(const goto_statement_t *statement)
4480 if (get_cur_block() == NULL)
4483 ir_node *block = get_label_block(statement->label);
4484 ir_node *jmp = new_Jmp();
4485 add_immBlock_pred(block, jmp);
4487 set_cur_block(NULL);
4490 static void asm_statement_to_firm(const asm_statement_t *statement)
4492 bool needs_memory = false;
4494 if (statement->is_volatile) {
4495 needs_memory = true;
4498 size_t n_clobbers = 0;
4499 asm_clobber_t *clobber = statement->clobbers;
4500 for( ; clobber != NULL; clobber = clobber->next) {
4501 const char *clobber_str = clobber->clobber.begin;
4503 if (!be_is_valid_clobber(clobber_str)) {
4504 errorf(&statement->base.source_position,
4505 "invalid clobber '%s' specified", clobber->clobber);
4509 if (strcmp(clobber_str, "memory") == 0) {
4510 needs_memory = true;
4514 ident *id = new_id_from_str(clobber_str);
4515 obstack_ptr_grow(&asm_obst, id);
4518 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4519 ident **clobbers = NULL;
4520 if (n_clobbers > 0) {
4521 clobbers = obstack_finish(&asm_obst);
4524 size_t n_inputs = 0;
4525 asm_argument_t *argument = statement->inputs;
4526 for ( ; argument != NULL; argument = argument->next)
4528 size_t n_outputs = 0;
4529 argument = statement->outputs;
4530 for ( ; argument != NULL; argument = argument->next)
4533 unsigned next_pos = 0;
4535 ir_node *ins[n_inputs + n_outputs + 1];
4538 ir_asm_constraint *tmp_in_constraints
4539 = xmalloc(n_outputs * sizeof(tmp_in_constraints[0]));
4541 const expression_t *out_exprs[n_outputs];
4542 ir_node *out_addrs[n_outputs];
4543 size_t out_size = 0;
4545 argument = statement->outputs;
4546 for ( ; argument != NULL; argument = argument->next) {
4547 const char *constraints = argument->constraints.begin;
4548 asm_constraint_flags_t asm_flags
4549 = be_parse_asm_constraints(constraints);
4551 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4552 errorf(&statement->base.source_position,
4553 "some constraints in '%s' are not supported", constraints);
4556 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4557 errorf(&statement->base.source_position,
4558 "some constraints in '%s' are invalid", constraints);
4561 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4562 errorf(&statement->base.source_position,
4563 "no write flag specified for output constraints '%s'",
4568 unsigned pos = next_pos++;
4569 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4570 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4571 expression_t *expr = argument->expression;
4572 ir_node *addr = expression_to_addr(expr);
4573 /* in+output, construct an artifical same_as constraint on the
4575 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4577 ir_node *value = get_value_from_lvalue(expr, addr);
4579 snprintf(buf, sizeof(buf), "%d", pos);
4581 ir_asm_constraint constraint;
4582 constraint.pos = pos;
4583 constraint.constraint = new_id_from_str(buf);
4584 constraint.mode = get_ir_mode(expr->base.type);
4585 tmp_in_constraints[in_size] = constraint;
4586 ins[in_size] = value;
4591 out_exprs[out_size] = expr;
4592 out_addrs[out_size] = addr;
4594 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4595 /* pure memory ops need no input (but we have to make sure we
4596 * attach to the memory) */
4597 assert(! (asm_flags &
4598 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4599 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4600 needs_memory = true;
4602 /* we need to attach the address to the inputs */
4603 expression_t *expr = argument->expression;
4605 ir_asm_constraint constraint;
4606 constraint.pos = pos;
4607 constraint.constraint = new_id_from_str(constraints);
4608 constraint.mode = NULL;
4609 tmp_in_constraints[in_size] = constraint;
4611 ins[in_size] = expression_to_addr(expr);
4615 errorf(&statement->base.source_position,
4616 "only modifiers but no place set in constraints '%s'",
4621 ir_asm_constraint constraint;
4622 constraint.pos = pos;
4623 constraint.constraint = new_id_from_str(constraints);
4624 constraint.mode = get_ir_mode(argument->expression->base.type);
4626 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4628 assert(obstack_object_size(&asm_obst)
4629 == out_size * sizeof(ir_asm_constraint));
4630 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4633 obstack_grow(&asm_obst, tmp_in_constraints,
4634 in_size * sizeof(tmp_in_constraints[0]));
4635 free(tmp_in_constraints);
4636 /* find and count input and output arguments */
4637 argument = statement->inputs;
4638 for( ; argument != NULL; argument = argument->next) {
4639 const char *constraints = argument->constraints.begin;
4640 asm_constraint_flags_t asm_flags
4641 = be_parse_asm_constraints(constraints);
4643 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4644 errorf(&statement->base.source_position,
4645 "some constraints in '%s' are not supported", constraints);
4648 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4649 errorf(&statement->base.source_position,
4650 "some constraints in '%s' are invalid", constraints);
4653 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4654 errorf(&statement->base.source_position,
4655 "write flag specified for input constraints '%s'",
4661 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4662 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4663 /* we can treat this as "normal" input */
4664 input = expression_to_firm(argument->expression);
4665 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4666 /* pure memory ops need no input (but we have to make sure we
4667 * attach to the memory) */
4668 assert(! (asm_flags &
4669 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4670 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4671 needs_memory = true;
4672 input = expression_to_addr(argument->expression);
4674 errorf(&statement->base.source_position,
4675 "only modifiers but no place set in constraints '%s'",
4680 ir_asm_constraint constraint;
4681 constraint.pos = next_pos++;
4682 constraint.constraint = new_id_from_str(constraints);
4683 constraint.mode = get_irn_mode(input);
4685 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4686 ins[in_size++] = input;
4690 ir_asm_constraint constraint;
4691 constraint.pos = next_pos++;
4692 constraint.constraint = new_id_from_str("");
4693 constraint.mode = mode_M;
4695 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4696 ins[in_size++] = get_store();
4699 assert(obstack_object_size(&asm_obst)
4700 == in_size * sizeof(ir_asm_constraint));
4701 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4703 /* create asm node */
4704 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4706 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4708 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4709 out_size, output_constraints,
4710 n_clobbers, clobbers, asm_text);
4712 if (statement->is_volatile) {
4713 set_irn_pinned(node, op_pin_state_pinned);
4715 set_irn_pinned(node, op_pin_state_floats);
4718 /* create output projs & connect them */
4720 for (i = 0; i < out_size; ++i) {
4721 const expression_t *out_expr = out_exprs[i];
4723 ir_mode *mode = get_ir_mode(out_expr->base.type);
4724 ir_node *proj = new_Proj(node, mode, pn);
4725 ir_node *addr = out_addrs[i];
4727 set_value_for_expression_addr(out_expr, proj, addr);
4730 ir_node *projm = new_Proj(node, mode_M, i);
4735 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4736 statement_to_firm(statement->try_statement);
4737 warningf(&statement->base.source_position, "structured exception handling ignored");
4740 static void leave_statement_to_firm(leave_statement_t *statement) {
4741 errorf(&statement->base.source_position, "__leave not supported yet");
4745 * Transform a statement.
4747 static void statement_to_firm(statement_t *statement)
4750 assert(!statement->base.transformed);
4751 statement->base.transformed = true;
4754 switch(statement->kind) {
4755 case STATEMENT_INVALID:
4756 panic("invalid statement found");
4758 case STATEMENT_EMPTY:
4761 case STATEMENT_COMPOUND:
4762 compound_statement_to_firm(&statement->compound);
4764 case STATEMENT_RETURN:
4765 return_statement_to_firm(&statement->returns);
4767 case STATEMENT_EXPRESSION:
4768 expression_statement_to_firm(&statement->expression);
4771 if_statement_to_firm(&statement->ifs);
4773 case STATEMENT_WHILE:
4774 while_statement_to_firm(&statement->whiles);
4776 case STATEMENT_DO_WHILE:
4777 do_while_statement_to_firm(&statement->do_while);
4779 case STATEMENT_DECLARATION:
4780 declaration_statement_to_firm(&statement->declaration);
4782 case STATEMENT_BREAK:
4783 create_jump_statement(statement, get_break_label());
4785 case STATEMENT_CONTINUE:
4786 create_jump_statement(statement, continue_label);
4788 case STATEMENT_SWITCH:
4789 switch_statement_to_firm(&statement->switchs);
4791 case STATEMENT_CASE_LABEL:
4792 case_label_to_firm(&statement->case_label);
4795 for_statement_to_firm(&statement->fors);
4797 case STATEMENT_LABEL:
4798 label_to_firm(&statement->label);
4800 case STATEMENT_GOTO:
4801 goto_to_firm(&statement->gotos);
4804 asm_statement_to_firm(&statement->asms);
4806 case STATEMENT_MS_TRY:
4807 ms_try_statement_to_firm(&statement->ms_try);
4809 case STATEMENT_LEAVE:
4810 leave_statement_to_firm(&statement->leave);
4813 panic("Statement not implemented\n");
4816 static int count_decls_in_expression(const expression_t *expression);
4818 static int count_local_declarations(const declaration_t * decl,
4819 const declaration_t *const end)
4822 for (; decl != end; decl = decl->next) {
4823 if (decl->namespc != NAMESPACE_NORMAL)
4825 type_t *type = skip_typeref(decl->type);
4827 if (!decl->address_taken && is_type_scalar(type))
4829 const initializer_t *initializer = decl->init.initializer;
4830 /* FIXME: should walk initializer hierarchies... */
4831 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4832 count += count_decls_in_expression(initializer->value.value);
4838 static int count_decls_in_expression(const expression_t *expression) {
4841 if (expression == NULL)
4844 switch((expression_kind_t) expression->base.kind) {
4845 case EXPR_STATEMENT:
4846 return count_decls_in_stmts(expression->statement.statement);
4848 int count_left = count_decls_in_expression(expression->binary.left);
4849 int count_right = count_decls_in_expression(expression->binary.right);
4850 return count_left + count_right;
4853 return count_decls_in_expression(expression->unary.value);
4855 call_argument_t *argument = expression->call.arguments;
4856 for( ; argument != NULL; argument = argument->next) {
4857 count += count_decls_in_expression(argument->expression);
4864 panic("unexpected expression kind");
4866 case EXPR_COMPOUND_LITERAL:
4870 case EXPR_CONDITIONAL:
4871 count += count_decls_in_expression(expression->conditional.condition);
4872 count += count_decls_in_expression(expression->conditional.true_expression);
4873 count += count_decls_in_expression(expression->conditional.false_expression);
4876 case EXPR_BUILTIN_PREFETCH:
4877 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4878 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4879 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4882 case EXPR_BUILTIN_CONSTANT_P:
4883 count += count_decls_in_expression(expression->builtin_constant.value);
4887 count += count_decls_in_expression(expression->select.compound);
4890 case EXPR_ARRAY_ACCESS:
4891 count += count_decls_in_expression(expression->array_access.array_ref);
4892 count += count_decls_in_expression(expression->array_access.index);
4895 case EXPR_CLASSIFY_TYPE:
4896 count += count_decls_in_expression(expression->classify_type.type_expression);
4900 case EXPR_ALIGNOF: {
4901 expression_t *tp_expression = expression->typeprop.tp_expression;
4902 if (tp_expression != NULL) {
4903 count += count_decls_in_expression(tp_expression);
4909 case EXPR_REFERENCE:
4911 case EXPR_CHARACTER_CONSTANT:
4912 case EXPR_WIDE_CHARACTER_CONSTANT:
4913 case EXPR_STRING_LITERAL:
4914 case EXPR_WIDE_STRING_LITERAL:
4916 case EXPR_BUILTIN_SYMBOL:
4922 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4923 * (or implement all the missing expressions here/implement a walker)
4929 static int count_decls_in_stmts(const statement_t *stmt)
4932 for (; stmt != NULL; stmt = stmt->base.next) {
4933 switch (stmt->kind) {
4934 case STATEMENT_EMPTY:
4937 case STATEMENT_DECLARATION: {
4938 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4939 count += count_local_declarations(decl_stmt->declarations_begin,
4940 decl_stmt->declarations_end->next);
4944 case STATEMENT_COMPOUND: {
4945 const compound_statement_t *const comp =
4947 count += count_decls_in_stmts(comp->statements);
4951 case STATEMENT_IF: {
4952 const if_statement_t *const if_stmt = &stmt->ifs;
4953 count += count_decls_in_expression(if_stmt->condition);
4954 count += count_decls_in_stmts(if_stmt->true_statement);
4955 count += count_decls_in_stmts(if_stmt->false_statement);
4959 case STATEMENT_SWITCH: {
4960 const switch_statement_t *const switch_stmt = &stmt->switchs;
4961 count += count_decls_in_expression(switch_stmt->expression);
4962 count += count_decls_in_stmts(switch_stmt->body);
4966 case STATEMENT_LABEL: {
4967 const label_statement_t *const label_stmt = &stmt->label;
4968 if (label_stmt->statement != NULL) {
4969 count += count_decls_in_stmts(label_stmt->statement);
4974 case STATEMENT_WHILE: {
4975 const while_statement_t *const while_stmt = &stmt->whiles;
4976 count += count_decls_in_expression(while_stmt->condition);
4977 count += count_decls_in_stmts(while_stmt->body);
4981 case STATEMENT_DO_WHILE: {
4982 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4983 count += count_decls_in_expression(do_while_stmt->condition);
4984 count += count_decls_in_stmts(do_while_stmt->body);
4988 case STATEMENT_FOR: {
4989 const for_statement_t *const for_stmt = &stmt->fors;
4990 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4991 count += count_decls_in_expression(for_stmt->initialisation);
4992 count += count_decls_in_expression(for_stmt->condition);
4993 count += count_decls_in_expression(for_stmt->step);
4994 count += count_decls_in_stmts(for_stmt->body);
4998 case STATEMENT_CASE_LABEL: {
4999 const case_label_statement_t *label = &stmt->case_label;
5000 count += count_decls_in_expression(label->expression);
5001 if (label->statement != NULL) {
5002 count += count_decls_in_stmts(label->statement);
5008 case STATEMENT_BREAK:
5009 case STATEMENT_CONTINUE:
5012 case STATEMENT_EXPRESSION: {
5013 const expression_statement_t *expr_stmt = &stmt->expression;
5014 count += count_decls_in_expression(expr_stmt->expression);
5018 case STATEMENT_GOTO:
5019 case STATEMENT_LEAVE:
5020 case STATEMENT_INVALID:
5023 case STATEMENT_RETURN: {
5024 const return_statement_t *ret_stmt = &stmt->returns;
5025 count += count_decls_in_expression(ret_stmt->value);
5029 case STATEMENT_MS_TRY: {
5030 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5031 count += count_decls_in_stmts(try_stmt->try_statement);
5032 if (try_stmt->except_expression != NULL)
5033 count += count_decls_in_expression(try_stmt->except_expression);
5034 count += count_decls_in_stmts(try_stmt->final_statement);
5042 static int get_function_n_local_vars(declaration_t *declaration)
5046 /* count parameters */
5047 count += count_local_declarations(declaration->scope.declarations, NULL);
5049 /* count local variables declared in body */
5050 count += count_decls_in_stmts(declaration->init.statement);
5055 static void initialize_function_parameters(declaration_t *declaration)
5057 ir_graph *irg = current_ir_graph;
5058 ir_node *args = get_irg_args(irg);
5059 ir_node *start_block = get_irg_start_block(irg);
5060 ir_type *function_irtype = get_ir_type(declaration->type);
5063 declaration_t *parameter = declaration->scope.declarations;
5064 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5065 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5066 type_t *type = skip_typeref(parameter->type);
5068 bool needs_entity = parameter->address_taken;
5069 assert(!is_type_array(type));
5070 if (is_type_compound(type)) {
5071 needs_entity = true;
5075 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5076 ident *id = new_id_from_str(parameter->symbol->string);
5077 set_entity_ident(entity, id);
5079 parameter->declaration_kind
5080 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5081 parameter->v.entity = entity;
5085 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5086 ir_mode *param_mode = get_type_mode(param_irtype);
5089 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5091 ir_mode *mode = get_ir_mode(type);
5092 value = create_conv(NULL, value, mode);
5093 value = do_strict_conv(NULL, value);
5095 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5096 parameter->v.value_number = next_value_number_function;
5097 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5098 ++next_value_number_function;
5100 set_value(parameter->v.value_number, value);
5105 * Handle additional decl modifiers for IR-graphs
5107 * @param irg the IR-graph
5108 * @param dec_modifiers additional modifiers
5110 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5112 if (decl_modifiers & DM_NORETURN) {
5113 /* TRUE if the declaration includes the Microsoft
5114 __declspec(noreturn) specifier. */
5115 set_irg_additional_property(irg, mtp_property_noreturn);
5117 if (decl_modifiers & DM_NOTHROW) {
5118 /* TRUE if the declaration includes the Microsoft
5119 __declspec(nothrow) specifier. */
5120 set_irg_additional_property(irg, mtp_property_nothrow);
5122 if (decl_modifiers & DM_NAKED) {
5123 /* TRUE if the declaration includes the Microsoft
5124 __declspec(naked) specifier. */
5125 set_irg_additional_property(irg, mtp_property_naked);
5127 if (decl_modifiers & DM_FORCEINLINE) {
5128 /* TRUE if the declaration includes the
5129 Microsoft __forceinline specifier. */
5130 set_irg_inline_property(irg, irg_inline_forced);
5132 if (decl_modifiers & DM_NOINLINE) {
5133 /* TRUE if the declaration includes the Microsoft
5134 __declspec(noinline) specifier. */
5135 set_irg_inline_property(irg, irg_inline_forbidden);
5139 static void add_function_pointer(ir_type *segment, ir_entity *method,
5140 const char *unique_template)
5142 ir_type *method_type = get_entity_type(method);
5143 ident *id = id_unique(unique_template);
5144 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5146 ident *ide = id_unique(unique_template);
5147 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5148 ir_graph *irg = get_const_code_irg();
5149 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5152 set_entity_compiler_generated(ptr, 1);
5153 set_entity_variability(ptr, variability_constant);
5154 set_atomic_ent_value(ptr, val);
5158 * Create code for a function.
5160 static void create_function(declaration_t *declaration)
5162 ir_entity *function_entity = get_function_entity(declaration);
5164 if (declaration->init.statement == NULL)
5167 if (declaration->modifiers & DM_CONSTRUCTOR) {
5168 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5169 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5171 if (declaration->modifiers & DM_DESTRUCTOR) {
5172 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5173 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5176 current_function_decl = declaration;
5177 current_function_name = NULL;
5178 current_funcsig = NULL;
5180 assert(imature_blocks == NULL);
5181 imature_blocks = NEW_ARR_F(ir_node*, 0);
5183 int n_local_vars = get_function_n_local_vars(declaration);
5184 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5186 set_irg_fp_model(irg, firm_opt.fp_model);
5187 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5188 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5190 ir_node *first_block = get_cur_block();
5192 /* set inline flags */
5193 if (declaration->is_inline)
5194 set_irg_inline_property(irg, irg_inline_recomended);
5195 handle_decl_modifier_irg(irg, declaration->modifiers);
5197 next_value_number_function = 0;
5198 initialize_function_parameters(declaration);
5200 statement_to_firm(declaration->init.statement);
5202 ir_node *end_block = get_irg_end_block(irg);
5204 /* do we have a return statement yet? */
5205 if (get_cur_block() != NULL) {
5206 type_t *type = skip_typeref(declaration->type);
5207 assert(is_type_function(type));
5208 const function_type_t *func_type = &type->function;
5209 const type_t *return_type
5210 = skip_typeref(func_type->return_type);
5213 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5214 ret = new_Return(get_store(), 0, NULL);
5217 if (is_type_scalar(return_type)) {
5218 mode = get_ir_mode(func_type->return_type);
5224 /* ยง5.1.2.2.3 main implicitly returns 0 */
5225 if (strcmp(declaration->symbol->string, "main") == 0) {
5226 in[0] = new_Const(mode, get_mode_null(mode));
5228 in[0] = new_Unknown(mode);
5229 if (warning.return_type) {
5230 warningf(&declaration->source_position,
5231 "missing return statement at end of non-void function '%Y'",
5232 declaration->symbol);
5235 ret = new_Return(get_store(), 1, in);
5237 add_immBlock_pred(end_block, ret);
5240 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
5241 mature_immBlock(imature_blocks[i]);
5243 DEL_ARR_F(imature_blocks);
5244 imature_blocks = NULL;
5246 mature_immBlock(first_block);
5247 mature_immBlock(end_block);
5249 irg_finalize_cons(irg);
5251 /* finalize the frame type */
5252 ir_type *frame_type = get_irg_frame_type(irg);
5253 int n = get_compound_n_members(frame_type);
5256 for(int i = 0; i < n; ++i) {
5257 ir_entity *entity = get_compound_member(frame_type, i);
5258 ir_type *entity_type = get_entity_type(entity);
5260 int align = get_type_alignment_bytes(entity_type);
5261 if (align > align_all)
5265 misalign = offset % align;
5267 offset += align - misalign;
5271 set_entity_offset(entity, offset);
5272 offset += get_type_size_bytes(entity_type);
5274 set_type_size_bytes(frame_type, offset);
5275 set_type_alignment_bytes(frame_type, align_all);
5280 static void scope_to_firm(scope_t *scope)
5282 /* first pass: create declarations */
5283 declaration_t *declaration = scope->declarations;
5284 for( ; declaration != NULL; declaration = declaration->next) {
5285 if (declaration->namespc != NAMESPACE_NORMAL)
5287 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5288 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5290 if (declaration->symbol == NULL)
5293 type_t *type = skip_typeref(declaration->type);
5294 if (is_type_function(type)) {
5295 get_function_entity(declaration);
5297 create_global_variable(declaration);
5301 /* second pass: create code/initializers */
5302 declaration = scope->declarations;
5303 for( ; declaration != NULL; declaration = declaration->next) {
5304 if (declaration->namespc != NAMESPACE_NORMAL)
5306 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5307 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5309 if (declaration->symbol == NULL)
5312 type_t *type = declaration->type;
5313 if (type->kind == TYPE_FUNCTION) {
5314 create_function(declaration);
5316 assert(declaration->declaration_kind
5317 == DECLARATION_KIND_GLOBAL_VARIABLE);
5318 current_ir_graph = get_const_code_irg();
5319 create_declaration_initializer(declaration);
5324 void init_ast2firm(void)
5326 obstack_init(&asm_obst);
5327 init_atomic_modes();
5329 id_underscore = new_id_from_chars("_", 1);
5330 id_imp = new_id_from_chars("__imp_", 6);
5332 /* OS option must be set to the backend */
5333 const char *s = "ia32-gasmode=linux";
5334 switch (firm_opt.os_support) {
5335 case OS_SUPPORT_MINGW:
5336 create_ld_ident = create_ld_ident_win32;
5337 s = "ia32-gasmode=mingw";
5339 case OS_SUPPORT_LINUX:
5340 create_ld_ident = create_ld_ident_linux_elf;
5341 s = "ia32-gasmode=elf";
5343 case OS_SUPPORT_MACHO:
5344 create_ld_ident = create_ld_ident_macho;
5345 s = "ia32-gasmode=macho";
5348 int res = firm_be_option(s);
5352 /* create idents for all known runtime functions */
5353 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5354 rts_idents[i] = new_id_from_str(rts_data[i].name);
5357 entitymap_init(&entitymap);
5360 static void init_ir_types(void)
5362 static int ir_types_initialized = 0;
5363 if (ir_types_initialized)
5365 ir_types_initialized = 1;
5367 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5368 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5369 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5371 ir_type_int = get_ir_type(type_int);
5372 ir_type_const_char = get_ir_type(type_const_char);
5373 ir_type_wchar_t = get_ir_type(type_wchar_t);
5374 ir_type_void = get_ir_type(type_void);
5377 void exit_ast2firm(void)
5379 entitymap_destroy(&entitymap);
5380 obstack_free(&asm_obst, NULL);
5383 void translation_unit_to_firm(translation_unit_t *unit)
5385 /* just to be sure */
5386 continue_label = NULL;
5388 current_switch_cond = NULL;
5392 scope_to_firm(&unit->scope);