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);
342 static ir_type *create_method_type(const function_type_t *function_type)
344 type_t *return_type = function_type->return_type;
346 ident *id = id_unique("functiontype.%u");
347 int n_parameters = count_parameters(function_type);
348 int n_results = return_type == type_void ? 0 : 1;
349 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
350 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
352 if (return_type != type_void) {
353 ir_type *restype = get_ir_type(return_type);
354 set_method_res_type(irtype, 0, restype);
357 function_parameter_t *parameter = function_type->parameters;
359 for ( ; parameter != NULL; parameter = parameter->next) {
360 ir_type *p_irtype = get_ir_type(parameter->type);
361 set_method_param_type(irtype, n, p_irtype);
365 if (function_type->variadic || function_type->unspecified_parameters) {
366 set_method_variadicity(irtype, variadicity_variadic);
372 static ir_type *create_pointer_type(pointer_type_t *type)
374 type_t *points_to = type->points_to;
375 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
376 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
377 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
378 ir_points_to, mode_P_data, dbgi);
383 static ir_type *create_array_type(array_type_t *type)
385 type_t *element_type = type->element_type;
386 ir_type *ir_element_type = get_ir_type(element_type);
388 ident *id = id_unique("array.%u");
389 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
390 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
392 const int align = get_type_alignment_bytes(ir_element_type);
393 set_type_alignment_bytes(ir_type, align);
395 if (type->size_constant) {
396 int n_elements = type->size;
398 set_array_bounds_int(ir_type, 0, 0, n_elements);
400 size_t elemsize = get_type_size_bytes(ir_element_type);
401 if (elemsize % align > 0) {
402 elemsize += align - (elemsize % align);
404 set_type_size_bytes(ir_type, n_elements * elemsize);
406 set_array_lower_bound_int(ir_type, 0, 0);
408 set_type_state(ir_type, layout_fixed);
414 * Return the signed integer type of size bits.
416 * @param size the size
418 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
421 static ir_mode *s_modes[64 + 1] = {NULL, };
425 if (size <= 0 || size > 64)
428 mode = s_modes[size];
432 snprintf(name, sizeof(name), "bf_I%u", size);
433 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
434 size <= 32 ? 32 : size );
435 s_modes[size] = mode;
439 snprintf(name, sizeof(name), "I%u", size);
440 ident *id = new_id_from_str(name);
441 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
442 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
443 set_primitive_base_type(res, base_tp);
449 * Return the unsigned integer type of size bits.
451 * @param size the size
453 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
456 static ir_mode *u_modes[64 + 1] = {NULL, };
460 if (size <= 0 || size > 64)
463 mode = u_modes[size];
467 snprintf(name, sizeof(name), "bf_U%u", size);
468 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
469 size <= 32 ? 32 : size );
470 u_modes[size] = mode;
475 snprintf(name, sizeof(name), "U%u", size);
476 ident *id = new_id_from_str(name);
477 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
478 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
479 set_primitive_base_type(res, base_tp);
484 static ir_type *create_bitfield_type(bitfield_type_t *const type)
486 type_t *base = skip_typeref(type->base_type);
487 assert(base->kind == TYPE_ATOMIC);
488 ir_type *irbase = get_ir_type(base);
490 unsigned size = fold_constant(type->size);
492 assert(!is_type_float(base));
493 if (is_type_signed(base)) {
494 return get_signed_int_type_for_bit_size(irbase, size);
496 return get_unsigned_int_type_for_bit_size(irbase, size);
500 #define INVALID_TYPE ((ir_type_ptr)-1)
503 COMPOUND_IS_STRUCT = false,
504 COMPOUND_IS_UNION = true
508 * Construct firm type from ast struct type.
510 * As anonymous inner structs get flattened to a single firm type, we might get
511 * irtype, outer_offset and out_align passed (they represent the position of
512 * the anonymous inner struct inside the resulting firm struct)
514 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
515 size_t *outer_offset, size_t *outer_align,
516 bool incomplete, bool is_union)
518 declaration_t *declaration = type->declaration;
519 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
521 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
522 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
524 return declaration->v.irtype;
526 size_t align_all = 1;
528 size_t bit_offset = 0;
531 if (irtype == NULL) {
532 symbol_t *symbol = declaration->symbol;
534 if (symbol != NULL) {
535 id = new_id_from_str(symbol->string);
538 id = id_unique("__anonymous_union.%u");
540 id = id_unique("__anonymous_struct.%u");
543 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
546 irtype = new_d_type_union(id, dbgi);
548 irtype = new_d_type_struct(id, dbgi);
551 declaration->declaration_kind
552 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
553 declaration->v.irtype = irtype;
554 //type->base.firm_type = irtype;
556 offset = *outer_offset;
557 align_all = *outer_align;
563 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
565 declaration_t *entry = declaration->scope.declarations;
566 for( ; entry != NULL; entry = entry->next) {
567 if (entry->namespc != NAMESPACE_NORMAL)
570 size_t prev_offset = offset;
572 symbol_t *symbol = entry->symbol;
573 type_t *entry_type = skip_typeref(entry->type);
574 dbg_info *dbgi = get_dbg_info(&entry->source_position);
577 if (symbol != NULL) {
578 ident = new_id_from_str(symbol->string);
580 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
581 create_compound_type(&entry_type->compound, irtype, &offset,
582 &align_all, false, COMPOUND_IS_STRUCT);
583 goto finished_member;
584 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
585 create_compound_type(&entry_type->compound, irtype, &offset,
586 &align_all, false, COMPOUND_IS_UNION);
587 goto finished_member;
589 assert(entry_type->kind == TYPE_BITFIELD);
591 ident = id_unique("anon.%u");
594 ir_type *base_irtype;
595 if (entry_type->kind == TYPE_BITFIELD) {
596 base_irtype = get_ir_type(entry_type->bitfield.base_type);
598 base_irtype = get_ir_type(entry_type);
601 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
602 size_t misalign = offset % entry_alignment;
604 ir_type *entry_irtype = get_ir_type(entry_type);
605 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
608 size_t bits_remainder;
609 if (entry_type->kind == TYPE_BITFIELD) {
610 size_t size_bits = fold_constant(entry_type->bitfield.size);
611 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
613 if (size_bits > rest_size_bits) {
614 /* start a new bucket */
615 offset += entry_alignment - misalign;
621 /* put into current bucket */
622 base = offset - misalign;
623 bits_remainder = misalign * 8 + bit_offset;
626 offset += size_bits / 8;
627 bit_offset = bit_offset + (size_bits % 8);
629 size_t entry_size = get_type_size_bytes(base_irtype);
630 if (misalign > 0 || bit_offset > 0)
631 offset += entry_alignment - misalign;
635 offset += entry_size;
639 if (entry_alignment > align_all) {
640 if (entry_alignment % align_all != 0) {
641 panic("uneven alignments not supported yet");
643 align_all = entry_alignment;
646 set_entity_offset(entity, base);
647 set_entity_offset_bits_remainder(entity,
648 (unsigned char) bits_remainder);
649 //add_struct_member(irtype, entity);
650 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
651 assert(entry->v.entity == NULL);
652 entry->v.entity = entity;
656 size_t entry_size = offset - prev_offset;
657 if (entry_size > size) {
669 size_t misalign = offset % align_all;
670 if (misalign > 0 || bit_offset > 0) {
671 size += align_all - misalign;
674 if (outer_offset != NULL) {
676 *outer_offset = offset;
678 *outer_offset += size;
681 if (align_all > *outer_align) {
682 if (align_all % *outer_align != 0) {
683 panic("uneven alignments not supported yet");
685 *outer_align = align_all;
688 set_type_alignment_bytes(irtype, align_all);
689 set_type_size_bytes(irtype, size);
690 set_type_state(irtype, layout_fixed);
696 static ir_type *create_enum_type(enum_type_t *const type)
698 type->base.firm_type = ir_type_int;
700 ir_mode *const mode = mode_int;
701 tarval *const one = get_mode_one(mode);
702 tarval * tv_next = get_tarval_null(mode);
704 bool constant_folding_old = constant_folding;
705 constant_folding = true;
707 declaration_t *declaration = type->declaration->next;
708 for (; declaration != NULL; declaration = declaration->next) {
709 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
712 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
714 expression_t *const init = declaration->init.enum_value;
716 ir_node *const cnst = expression_to_firm(init);
717 if (!is_Const(cnst)) {
718 panic("couldn't fold constant");
720 tv_next = get_Const_tarval(cnst);
722 declaration->v.enum_val = tv_next;
723 tv_next = tarval_add(tv_next, one);
726 constant_folding = constant_folding_old;
731 static ir_type *get_ir_type_incomplete(type_t *type)
733 assert(type != NULL);
734 type = skip_typeref(type);
736 if (type->base.firm_type != NULL) {
737 assert(type->base.firm_type != INVALID_TYPE);
738 return type->base.firm_type;
741 switch (type->kind) {
742 case TYPE_COMPOUND_STRUCT:
743 return create_compound_type(&type->compound, NULL, NULL, NULL,
744 true, COMPOUND_IS_STRUCT);
745 case TYPE_COMPOUND_UNION:
746 return create_compound_type(&type->compound, NULL, NULL, NULL,
747 true, COMPOUND_IS_UNION);
749 return get_ir_type(type);
753 static ir_type *get_ir_type(type_t *type)
755 assert(type != NULL);
757 type = skip_typeref(type);
759 if (type->base.firm_type != NULL) {
760 assert(type->base.firm_type != INVALID_TYPE);
761 return type->base.firm_type;
764 ir_type *firm_type = NULL;
765 switch (type->kind) {
767 panic("error type occurred");
769 firm_type = create_atomic_type(&type->atomic);
772 firm_type = create_complex_type(&type->complex);
775 firm_type = create_imaginary_type(&type->imaginary);
778 firm_type = create_method_type(&type->function);
781 firm_type = create_pointer_type(&type->pointer);
784 firm_type = create_array_type(&type->array);
786 case TYPE_COMPOUND_STRUCT:
787 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
788 false, COMPOUND_IS_STRUCT);
790 case TYPE_COMPOUND_UNION:
791 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
792 false, COMPOUND_IS_UNION);
795 firm_type = create_enum_type(&type->enumt);
798 firm_type = get_ir_type(type->builtin.real_type);
801 firm_type = create_bitfield_type(&type->bitfield);
809 if (firm_type == NULL)
810 panic("unknown type found");
812 type->base.firm_type = firm_type;
816 static inline ir_mode *get_ir_mode(type_t *type)
818 ir_type *irtype = get_ir_type(type);
820 /* firm doesn't report a mode for arrays somehow... */
821 if (is_Array_type(irtype)) {
825 ir_mode *mode = get_type_mode(irtype);
826 assert(mode != NULL);
830 /** Names of the runtime functions. */
831 static const struct {
832 int id; /**< the rts id */
833 int n_res; /**< number of return values */
834 const char *name; /**< the name of the rts function */
835 int n_params; /**< number of parameters */
836 unsigned flags; /**< language flags */
838 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
839 { rts_abort, 0, "abort", 0, _C89 },
840 { rts_alloca, 1, "alloca", 1, _ALL },
841 { rts_abs, 1, "abs", 1, _C89 },
842 { rts_labs, 1, "labs", 1, _C89 },
843 { rts_llabs, 1, "llabs", 1, _C99 },
844 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
846 { rts_fabs, 1, "fabs", 1, _C89 },
847 { rts_sqrt, 1, "sqrt", 1, _C89 },
848 { rts_cbrt, 1, "cbrt", 1, _C99 },
849 { rts_exp, 1, "exp", 1, _C89 },
850 { rts_exp2, 1, "exp2", 1, _C89 },
851 { rts_exp10, 1, "exp10", 1, _GNUC },
852 { rts_log, 1, "log", 1, _C89 },
853 { rts_log2, 1, "log2", 1, _C89 },
854 { rts_log10, 1, "log10", 1, _C89 },
855 { rts_pow, 1, "pow", 2, _C89 },
856 { rts_sin, 1, "sin", 1, _C89 },
857 { rts_cos, 1, "cos", 1, _C89 },
858 { rts_tan, 1, "tan", 1, _C89 },
859 { rts_asin, 1, "asin", 1, _C89 },
860 { rts_acos, 1, "acos", 1, _C89 },
861 { rts_atan, 1, "atan", 1, _C89 },
862 { rts_sinh, 1, "sinh", 1, _C89 },
863 { rts_cosh, 1, "cosh", 1, _C89 },
864 { rts_tanh, 1, "tanh", 1, _C89 },
866 { rts_fabsf, 1, "fabsf", 1, _C99 },
867 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
868 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
869 { rts_expf, 1, "expf", 1, _C99 },
870 { rts_exp2f, 1, "exp2f", 1, _C99 },
871 { rts_exp10f, 1, "exp10f", 1, _GNUC },
872 { rts_logf, 1, "logf", 1, _C99 },
873 { rts_log2f, 1, "log2f", 1, _C99 },
874 { rts_log10f, 1, "log10f", 1, _C99 },
875 { rts_powf, 1, "powf", 2, _C99 },
876 { rts_sinf, 1, "sinf", 1, _C99 },
877 { rts_cosf, 1, "cosf", 1, _C99 },
878 { rts_tanf, 1, "tanf", 1, _C99 },
879 { rts_asinf, 1, "asinf", 1, _C99 },
880 { rts_acosf, 1, "acosf", 1, _C99 },
881 { rts_atanf, 1, "atanf", 1, _C99 },
882 { rts_sinhf, 1, "sinhf", 1, _C99 },
883 { rts_coshf, 1, "coshf", 1, _C99 },
884 { rts_tanhf, 1, "tanhf", 1, _C99 },
886 { rts_fabsl, 1, "fabsl", 1, _C99 },
887 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
888 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
889 { rts_expl, 1, "expl", 1, _C99 },
890 { rts_exp2l, 1, "exp2l", 1, _C99 },
891 { rts_exp10l, 1, "exp10l", 1, _GNUC },
892 { rts_logl, 1, "logl", 1, _C99 },
893 { rts_log2l, 1, "log2l", 1, _C99 },
894 { rts_log10l, 1, "log10l", 1, _C99 },
895 { rts_powl, 1, "powl", 2, _C99 },
896 { rts_sinl, 1, "sinl", 1, _C99 },
897 { rts_cosl, 1, "cosl", 1, _C99 },
898 { rts_tanl, 1, "tanl", 1, _C99 },
899 { rts_asinl, 1, "asinl", 1, _C99 },
900 { rts_acosl, 1, "acosl", 1, _C99 },
901 { rts_atanl, 1, "atanl", 1, _C99 },
902 { rts_sinhl, 1, "sinhl", 1, _C99 },
903 { rts_coshl, 1, "coshl", 1, _C99 },
904 { rts_tanhl, 1, "tanhl", 1, _C99 },
906 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
907 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
908 { rts_strcmp, 1, "strcmp", 2, _C89 },
909 { rts_strncmp, 1, "strncmp", 3, _C89 }
912 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
915 * Mangles an entity linker (ld) name for win32 usage.
917 * @param ent the entity to be mangled
918 * @param declaration the declaration
920 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
924 if (is_Method_type(get_entity_type(ent)))
925 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
927 /* always add an underscore in win32 */
928 id = mangle(id_underscore, get_entity_ident(ent));
931 decl_modifiers_t decl_modifiers = declaration->modifiers;
932 if (decl_modifiers & DM_DLLIMPORT) {
933 /* add prefix for imported symbols */
934 id = mangle(id_imp, id);
940 * Mangles an entity linker (ld) name for Linux ELF usage.
942 * @param ent the entity to be mangled
943 * @param declaration the declaration
945 static ident *create_ld_ident_linux_elf(ir_entity *entity,
946 declaration_t *declaration)
949 return get_entity_ident(entity);
953 * Mangles an entity linker (ld) name for Mach-O usage.
955 * @param ent the entity to be mangled
956 * @param declaration the declaration
958 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
961 ident *id = mangle(id_underscore, get_entity_ident(ent));
965 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
966 declaration_t *declaration);
967 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
970 * Creates an entity representing a function.
972 * @param declaration the function declaration
974 static ir_entity *get_function_entity(declaration_t *declaration)
976 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
977 return declaration->v.entity;
978 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
980 symbol_t *symbol = declaration->symbol;
981 ident *id = new_id_from_str(symbol->string);
983 ir_type *global_type = get_glob_type();
984 ir_type *ir_type_method = get_ir_type(declaration->type);
985 assert(is_Method_type(ir_type_method));
987 /* already an entity defined? */
988 ir_entity *entity = entitymap_get(&entitymap, symbol);
989 if (entity != NULL) {
990 if (get_entity_visibility(entity) == visibility_external_allocated
991 && declaration->init.statement != NULL) {
992 set_entity_visibility(entity, visibility_external_visible);
997 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
998 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
999 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1001 /* static inline => local
1002 * extern inline => local
1003 * inline without definition => local
1004 * inline with definition => external_visible */
1006 if (declaration->is_inline && declaration->storage_class == STORAGE_CLASS_NONE
1007 && declaration->init.statement != NULL) {
1008 set_entity_visibility(entity, visibility_external_visible);
1010 else if (declaration->storage_class == STORAGE_CLASS_STATIC
1011 || declaration->is_inline) {
1012 if (declaration->init.statement == NULL) {
1013 /* this entity was declared, but is defined nowhere */
1014 set_entity_peculiarity(entity, peculiarity_description);
1016 set_entity_visibility(entity, visibility_local);
1017 } else if (declaration->init.statement != NULL) {
1018 set_entity_visibility(entity, visibility_external_visible);
1020 set_entity_visibility(entity, visibility_external_allocated);
1022 set_entity_allocation(entity, allocation_static);
1024 /* We should check for file scope here, but as long as we compile C only
1025 this is not needed. */
1026 if (! firm_opt.freestanding) {
1027 /* check for a known runtime function */
1028 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1029 if (id != rts_idents[i])
1032 /* ignore those rts functions not necessary needed for current mode */
1033 if ((c_mode & rts_data[i].flags) == 0)
1035 assert(rts_entities[rts_data[i].id] == NULL);
1036 rts_entities[rts_data[i].id] = entity;
1040 entitymap_insert(&entitymap, symbol, entity);
1043 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1044 declaration->v.entity = entity;
1050 * Creates a Const node representing a constant.
1052 static ir_node *const_to_firm(const const_expression_t *cnst)
1054 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1055 ir_mode *mode = get_ir_mode(cnst->base.type);
1060 if (mode_is_float(mode)) {
1061 tv = new_tarval_from_double(cnst->v.float_value, mode);
1063 if (mode_is_signed(mode)) {
1064 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1066 len = snprintf(buf, sizeof(buf), "%llu",
1067 (unsigned long long) cnst->v.int_value);
1069 tv = new_tarval_from_str(buf, len, mode);
1072 return new_d_Const(dbgi, mode, tv);
1076 * Creates a Const node representing a character constant.
1078 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1080 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1081 ir_mode *mode = get_ir_mode(cnst->base.type);
1083 long long int v = 0;
1084 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1085 if (char_is_signed) {
1086 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1088 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1092 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1093 tarval *tv = new_tarval_from_str(buf, len, mode);
1095 return new_d_Const(dbgi, mode, tv);
1099 * Creates a Const node representing a wide character constant.
1101 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1103 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1104 ir_mode *mode = get_ir_mode(cnst->base.type);
1106 long long int v = cnst->v.wide_character.begin[0];
1109 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1110 tarval *tv = new_tarval_from_str(buf, len, mode);
1112 return new_d_Const(dbgi, mode, tv);
1116 * Creates a SymConst for a given entity.
1118 * @param dbgi debug info
1119 * @param mode the (reference) mode for the SymConst
1120 * @param entity the entity
1122 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1125 assert(entity != NULL);
1126 union symconst_symbol sym;
1127 sym.entity_p = entity;
1128 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1132 * Creates a SymConst node representing a string constant.
1134 * @param src_pos the source position of the string constant
1135 * @param id_prefix a prefix for the name of the generated string constant
1136 * @param value the value of the string constant
1138 static ir_node *string_to_firm(const source_position_t *const src_pos,
1139 const char *const id_prefix,
1140 const string_t *const value)
1142 ir_type *const global_type = get_glob_type();
1143 dbg_info *const dbgi = get_dbg_info(src_pos);
1144 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1145 ir_type_const_char, dbgi);
1147 ident *const id = id_unique(id_prefix);
1148 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1149 set_entity_ld_ident(entity, id);
1150 set_entity_variability(entity, variability_constant);
1151 set_entity_allocation(entity, allocation_static);
1153 ir_type *const elem_type = ir_type_const_char;
1154 ir_mode *const mode = get_type_mode(elem_type);
1156 const char* const string = value->begin;
1157 const size_t slen = value->size;
1159 set_array_lower_bound_int(type, 0, 0);
1160 set_array_upper_bound_int(type, 0, slen);
1161 set_type_size_bytes(type, slen);
1162 set_type_state(type, layout_fixed);
1164 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1165 for(size_t i = 0; i < slen; ++i) {
1166 tvs[i] = new_tarval_from_long(string[i], mode);
1169 set_array_entity_values(entity, tvs, slen);
1172 return create_symconst(dbgi, mode_P_data, entity);
1176 * Creates a SymConst node representing a string literal.
1178 * @param literal the string literal
1180 static ir_node *string_literal_to_firm(
1181 const string_literal_expression_t* literal)
1183 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1188 * Creates a SymConst node representing a wide string literal.
1190 * @param literal the wide string literal
1192 static ir_node *wide_string_literal_to_firm(
1193 const wide_string_literal_expression_t* const literal)
1195 ir_type *const global_type = get_glob_type();
1196 ir_type *const elem_type = ir_type_wchar_t;
1197 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1198 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1201 ident *const id = id_unique("Lstr.%u");
1202 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1203 set_entity_ld_ident(entity, id);
1204 set_entity_variability(entity, variability_constant);
1205 set_entity_allocation(entity, allocation_static);
1207 ir_mode *const mode = get_type_mode(elem_type);
1209 const wchar_rep_t *const string = literal->value.begin;
1210 const size_t slen = literal->value.size;
1212 set_array_lower_bound_int(type, 0, 0);
1213 set_array_upper_bound_int(type, 0, slen);
1214 set_type_size_bytes(type, slen);
1215 set_type_state(type, layout_fixed);
1217 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1218 for(size_t i = 0; i < slen; ++i) {
1219 tvs[i] = new_tarval_from_long(string[i], mode);
1222 set_array_entity_values(entity, tvs, slen);
1225 return create_symconst(dbgi, mode_P_data, entity);
1228 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1229 ir_node *const addr)
1231 ir_type *irtype = get_ir_type(type);
1232 if (is_compound_type(irtype)
1233 || is_Method_type(irtype)
1234 || is_Array_type(irtype)) {
1238 ir_mode *const mode = get_type_mode(irtype);
1239 ir_node *const memory = get_store();
1240 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1241 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1242 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1244 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1245 set_Load_volatility(load, volatility_is_volatile);
1248 set_store(load_mem);
1253 * Creates a strict Conv if neccessary.
1255 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1257 ir_mode *mode = get_irn_mode(node);
1259 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1261 if (!mode_is_float(mode))
1264 /* check if there is already a Conv */
1265 if (is_Conv(node)) {
1266 /* convert it into a strict Conv */
1267 set_Conv_strict(node, 1);
1271 /* otherwise create a new one */
1272 return new_d_strictConv(dbgi, node, mode);
1275 static ir_node *get_global_var_address(dbg_info *const dbgi,
1276 const declaration_t *const decl)
1278 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1280 ir_entity *const entity = decl->v.entity;
1281 switch ((storage_class_tag_t)decl->storage_class) {
1282 case STORAGE_CLASS_THREAD:
1283 case STORAGE_CLASS_THREAD_EXTERN:
1284 case STORAGE_CLASS_THREAD_STATIC: {
1285 ir_node *const no_mem = new_NoMem();
1286 ir_node *const tls = get_irg_tls(current_ir_graph);
1287 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1291 return create_symconst(dbgi, mode_P_data, entity);
1296 * Returns the correct base address depending on whether it is a parameter or a
1297 * normal local variable.
1299 static ir_node *get_local_frame(ir_entity *const ent)
1301 ir_graph *const irg = current_ir_graph;
1302 const ir_type *const owner = get_entity_owner(ent);
1303 if (owner == get_irg_frame_type(irg)) {
1304 return get_irg_frame(irg);
1306 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1307 return get_irg_value_param_base(irg);
1311 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1313 ir_mode *value_mode = get_irn_mode(value);
1315 if (value_mode == dest_mode || is_Bad(value))
1318 if (dest_mode == mode_b) {
1319 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1320 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1321 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1325 return new_d_Conv(dbgi, value, dest_mode);
1328 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1330 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1331 declaration_t *declaration = ref->declaration;
1332 type_t *type = skip_typeref(declaration->type);
1334 /* make sure the type is constructed */
1335 (void) get_ir_type(type);
1337 switch((declaration_kind_t) declaration->declaration_kind) {
1338 case DECLARATION_KIND_TYPE:
1339 case DECLARATION_KIND_UNKNOWN:
1342 case DECLARATION_KIND_ENUM_ENTRY: {
1343 ir_mode *const mode = get_ir_mode(type);
1344 return new_Const(mode, declaration->v.enum_val);
1347 case DECLARATION_KIND_LOCAL_VARIABLE: {
1348 ir_mode *const mode = get_ir_mode(type);
1349 return get_value(declaration->v.value_number, mode);
1351 case DECLARATION_KIND_FUNCTION: {
1352 ir_mode *const mode = get_ir_mode(type);
1353 return create_symconst(dbgi, mode, declaration->v.entity);
1355 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1356 ir_node *const addr = get_global_var_address(dbgi, declaration);
1357 return deref_address(dbgi, declaration->type, addr);
1360 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1361 ir_entity *entity = declaration->v.entity;
1362 ir_node *frame = get_local_frame(entity);
1363 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1364 return deref_address(dbgi, declaration->type, sel);
1367 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1368 return declaration->v.vla_base;
1370 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1371 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1372 case DECLARATION_KIND_COMPOUND_MEMBER:
1373 case DECLARATION_KIND_LABEL_BLOCK:
1374 panic("not implemented reference type");
1377 panic("reference to declaration with unknown type found");
1380 static ir_node *reference_addr(const reference_expression_t *ref)
1382 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1383 declaration_t *declaration = ref->declaration;
1385 switch((declaration_kind_t) declaration->declaration_kind) {
1386 case DECLARATION_KIND_TYPE:
1387 case DECLARATION_KIND_UNKNOWN:
1389 case DECLARATION_KIND_LOCAL_VARIABLE:
1390 /* you can store to a local variable (so we don't panic but return NULL
1391 * as an indicator for no real address) */
1393 case DECLARATION_KIND_FUNCTION: {
1394 type_t *const type = skip_typeref(ref->base.type);
1395 ir_mode *const mode = get_ir_mode(type);
1396 return create_symconst(dbgi, mode, declaration->v.entity);
1398 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1399 ir_node *const addr = get_global_var_address(dbgi, declaration);
1402 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1403 ir_entity *entity = declaration->v.entity;
1404 ir_node *frame = get_local_frame(entity);
1405 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1410 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1411 return declaration->v.vla_base;
1413 case DECLARATION_KIND_ENUM_ENTRY:
1414 panic("trying to reference enum entry");
1416 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1417 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1418 case DECLARATION_KIND_COMPOUND_MEMBER:
1419 case DECLARATION_KIND_LABEL_BLOCK:
1420 panic("not implemented reference type");
1423 panic("reference to declaration with unknown type found");
1427 * Transform calls to builtin functions.
1429 static ir_node *process_builtin_call(const call_expression_t *call)
1431 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1433 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1434 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1436 type_t *type = skip_typeref(builtin->base.type);
1437 assert(is_type_pointer(type));
1439 type_t *function_type = skip_typeref(type->pointer.points_to);
1440 symbol_t *symbol = builtin->symbol;
1442 switch(symbol->ID) {
1443 case T___builtin_alloca: {
1444 if (call->arguments == NULL || call->arguments->next != NULL) {
1445 panic("invalid number of parameters on __builtin_alloca");
1447 expression_t *argument = call->arguments->expression;
1448 ir_node *size = expression_to_firm(argument);
1450 ir_node *store = get_store();
1451 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1453 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1455 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1459 case T___builtin_huge_val: {
1460 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1461 tarval *tv = get_mode_infinite(mode);
1462 ir_node *res = new_d_Const(dbgi, mode, tv);
1465 case T___builtin_nan:
1466 case T___builtin_nanf:
1467 case T___builtin_nand: {
1468 /* Ignore string for now... */
1469 assert(is_type_function(function_type));
1470 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1471 tarval *tv = get_mode_NAN(mode);
1472 ir_node *res = new_d_Const(dbgi, mode, tv);
1475 case T___builtin_va_end:
1478 panic("Unsupported builtin found\n");
1483 * Transform a call expression.
1484 * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs.
1485 * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of
1486 * 256 MB if alloca is not handled right...
1488 static ir_node *call_expression_to_firm(const call_expression_t *call)
1490 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1491 assert(get_cur_block() != NULL);
1493 expression_t *function = call->function;
1494 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1495 return process_builtin_call(call);
1497 if (function->kind == EXPR_REFERENCE) {
1498 const reference_expression_t *ref = &function->reference;
1499 declaration_t *declaration = ref->declaration;
1501 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1502 if (declaration->v.entity == rts_entities[rts_alloca]) {
1503 /* handle alloca() call */
1504 expression_t *argument = call->arguments->expression;
1505 ir_node *size = expression_to_firm(argument);
1507 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1509 ir_node *store = get_store();
1510 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1511 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1513 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1515 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1521 ir_node *callee = expression_to_firm(function);
1523 type_t *type = skip_typeref(function->base.type);
1524 assert(is_type_pointer(type));
1525 pointer_type_t *pointer_type = &type->pointer;
1526 type_t *points_to = skip_typeref(pointer_type->points_to);
1527 assert(is_type_function(points_to));
1528 function_type_t *function_type = &points_to->function;
1530 int n_parameters = 0;
1531 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1532 ir_type *new_method_type = NULL;
1533 if (function_type->variadic || function_type->unspecified_parameters) {
1534 const call_argument_t *argument = call->arguments;
1535 for( ; argument != NULL; argument = argument->next) {
1539 /* we need to construct a new method type matching the call
1541 int n_res = get_method_n_ress(ir_method_type);
1542 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1543 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1544 n_parameters, n_res, dbgi);
1545 set_method_calling_convention(new_method_type,
1546 get_method_calling_convention(ir_method_type));
1547 set_method_additional_properties(new_method_type,
1548 get_method_additional_properties(ir_method_type));
1549 set_method_variadicity(new_method_type,
1550 get_method_variadicity(ir_method_type));
1552 for(int i = 0; i < n_res; ++i) {
1553 set_method_res_type(new_method_type, i,
1554 get_method_res_type(ir_method_type, i));
1556 argument = call->arguments;
1557 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1558 expression_t *expression = argument->expression;
1559 ir_type *irtype = get_ir_type(expression->base.type);
1560 set_method_param_type(new_method_type, i, irtype);
1562 ir_method_type = new_method_type;
1564 n_parameters = get_method_n_params(ir_method_type);
1567 ir_node *in[n_parameters];
1569 const call_argument_t *argument = call->arguments;
1570 for(int n = 0; n < n_parameters; ++n) {
1571 expression_t *expression = argument->expression;
1572 ir_node *arg_node = expression_to_firm(expression);
1574 arg_node = do_strict_conv(dbgi, arg_node);
1578 argument = argument->next;
1581 ir_node *store = get_store();
1582 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1584 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1587 type_t *return_type = skip_typeref(function_type->return_type);
1588 ir_node *result = NULL;
1590 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1592 if (is_type_scalar(return_type)) {
1593 mode = get_ir_mode(return_type);
1597 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1598 result = new_d_Proj(dbgi, resproj, mode, 0);
1604 static void statement_to_firm(statement_t *statement);
1605 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1607 static ir_node *expression_to_addr(const expression_t *expression);
1608 static void create_condition_evaluation(const expression_t *expression,
1609 ir_node *true_block,
1610 ir_node *false_block);
1612 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1615 value = do_strict_conv(dbgi, value);
1617 ir_node *memory = get_store();
1619 if (is_type_scalar(type)) {
1620 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1621 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1622 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1623 set_Store_volatility(store, volatility_is_volatile);
1624 set_store(store_mem);
1626 ir_type *irtype = get_ir_type(type);
1627 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1628 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1629 set_store(copyb_mem);
1633 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1635 tarval *all_one = get_mode_all_one(mode);
1636 int mode_size = get_mode_size_bits(mode);
1638 assert(offset >= 0 && size >= 0);
1639 assert(offset + size <= mode_size);
1640 if (size == mode_size) {
1644 long shiftr = get_mode_size_bits(mode) - size;
1645 long shiftl = offset;
1646 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1647 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1648 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1649 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1654 static void bitfield_store_to_firm(const select_expression_t *expression,
1655 ir_node *addr, ir_node *value)
1657 type_t *type = expression->base.type;
1658 ir_mode *mode = get_ir_mode(type);
1660 assert(get_irn_mode(value) == mode || is_Bad(value));
1662 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1664 /* kill upper bits of value and shift to right position */
1665 ir_entity *entity = expression->compound_entry->v.entity;
1666 int bitoffset = get_entity_offset_bits_remainder(entity);
1667 ir_type *entity_type = get_entity_type(entity);
1668 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1670 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1671 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1672 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1673 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1674 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1675 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1677 /* load current value */
1678 ir_node *mem = get_store();
1679 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1680 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1681 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1682 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1683 tarval *inv_mask = tarval_not(shift_mask);
1684 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1685 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1687 /* construct new value and store */
1688 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1689 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1690 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1691 set_store(store_mem);
1693 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1694 set_Load_volatility(load, volatility_is_volatile);
1695 set_Store_volatility(store, volatility_is_volatile);
1699 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1702 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1703 type_t *type = expression->base.type;
1704 ir_mode *mode = get_ir_mode(type);
1705 ir_node *mem = get_store();
1706 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1707 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1708 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1710 load_res = create_conv(dbgi, load_res, mode_int);
1712 set_store(load_mem);
1714 /* kill upper bits */
1715 ir_entity *entity = expression->compound_entry->v.entity;
1716 int bitoffset = get_entity_offset_bits_remainder(entity);
1717 ir_type *entity_type = get_entity_type(entity);
1718 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1719 long shift_bitsl = machine_size - bitoffset - bitsize;
1720 assert(shift_bitsl >= 0);
1721 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1722 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1723 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1725 long shift_bitsr = bitoffset + shift_bitsl;
1726 assert(shift_bitsr <= (long) machine_size);
1727 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1728 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1730 if (mode_is_signed(mode)) {
1731 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1733 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1736 return create_conv(dbgi, shiftr, mode);
1739 static void set_value_for_expression_addr(const expression_t *expression,
1740 ir_node *value, ir_node *addr)
1742 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1743 value = do_strict_conv(dbgi, value);
1745 if (expression->kind == EXPR_REFERENCE) {
1746 const reference_expression_t *ref = &expression->reference;
1748 declaration_t *declaration = ref->declaration;
1749 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1750 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1751 set_value(declaration->v.value_number, value);
1757 addr = expression_to_addr(expression);
1759 type_t *type = skip_typeref(expression->base.type);
1761 if (expression->kind == EXPR_SELECT) {
1762 const select_expression_t *select = &expression->select;
1764 declaration_t *declaration = select->compound_entry;
1765 if (declaration->type->kind == TYPE_BITFIELD) {
1766 bitfield_store_to_firm(select, addr, value);
1771 assign_value(dbgi, addr, type, value);
1774 static void set_value_for_expression(const expression_t *expression,
1777 set_value_for_expression_addr(expression, value, NULL);
1780 static ir_node *get_value_from_lvalue(const expression_t *expression,
1783 if (expression->kind == EXPR_REFERENCE) {
1784 const reference_expression_t *ref = &expression->reference;
1786 declaration_t *declaration = ref->declaration;
1787 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1788 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1789 assert(addr == NULL);
1790 ir_mode *mode = get_ir_mode(expression->base.type);
1791 return get_value(declaration->v.value_number, mode);
1795 assert(addr != NULL);
1796 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1799 if (expression->kind == EXPR_SELECT &&
1800 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1801 value = bitfield_extract_to_firm(&expression->select, addr);
1803 value = deref_address(dbgi, expression->base.type, addr);
1810 static ir_node *create_incdec(const unary_expression_t *expression)
1812 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1813 const expression_t *value_expr = expression->value;
1814 ir_node *addr = expression_to_addr(value_expr);
1815 ir_node *value = get_value_from_lvalue(value_expr, addr);
1817 type_t *type = skip_typeref(expression->base.type);
1818 ir_mode *mode = get_ir_mode(expression->base.type);
1821 if (is_type_pointer(type)) {
1822 pointer_type_t *pointer_type = &type->pointer;
1823 offset = get_type_size(pointer_type->points_to);
1825 assert(is_type_arithmetic(type));
1826 offset = new_Const(mode, get_mode_one(mode));
1830 ir_node *store_value;
1831 switch(expression->base.kind) {
1832 case EXPR_UNARY_POSTFIX_INCREMENT:
1834 store_value = new_d_Add(dbgi, value, offset, mode);
1836 case EXPR_UNARY_POSTFIX_DECREMENT:
1838 store_value = new_d_Sub(dbgi, value, offset, mode);
1840 case EXPR_UNARY_PREFIX_INCREMENT:
1841 result = new_d_Add(dbgi, value, offset, mode);
1842 store_value = result;
1844 case EXPR_UNARY_PREFIX_DECREMENT:
1845 result = new_d_Sub(dbgi, value, offset, mode);
1846 store_value = result;
1849 panic("no incdec expr in create_incdec");
1852 set_value_for_expression_addr(value_expr, store_value, addr);
1857 static bool is_local_variable(expression_t *expression)
1859 if (expression->kind != EXPR_REFERENCE)
1861 reference_expression_t *ref_expr = &expression->reference;
1862 declaration_t *declaration = ref_expr->declaration;
1863 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1866 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1869 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1870 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1871 case EXPR_BINARY_NOTEQUAL:
1872 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1873 case EXPR_BINARY_ISLESS:
1874 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1875 case EXPR_BINARY_ISLESSEQUAL:
1876 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1877 case EXPR_BINARY_ISGREATER:
1878 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1879 case EXPR_BINARY_ISGREATEREQUAL:
1880 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1881 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1886 panic("trying to get pn_Cmp from non-comparison binexpr type");
1890 * Handle the assume optimizer hint: check if a Confirm
1891 * node can be created.
1893 * @param dbi debug info
1894 * @param expr the IL assume expression
1896 * we support here only some simple cases:
1901 static ir_node *handle_assume_compare(dbg_info *dbi,
1902 const binary_expression_t *expression)
1904 expression_t *op1 = expression->left;
1905 expression_t *op2 = expression->right;
1906 declaration_t *var2, *var = NULL;
1907 ir_node *res = NULL;
1910 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1912 if (is_local_variable(op1) && is_local_variable(op2)) {
1913 var = op1->reference.declaration;
1914 var2 = op2->reference.declaration;
1916 type_t *const type = skip_typeref(var->type);
1917 ir_mode *const mode = get_ir_mode(type);
1919 ir_node *const irn1 = get_value(var->v.value_number, mode);
1920 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1922 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1923 set_value(var2->v.value_number, res);
1925 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1926 set_value(var->v.value_number, res);
1932 if (is_local_variable(op1) && is_constant_expression(op2)) {
1933 var = op1->reference.declaration;
1935 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1936 cmp_val = get_inversed_pnc(cmp_val);
1937 var = op2->reference.declaration;
1942 type_t *const type = skip_typeref(var->type);
1943 ir_mode *const mode = get_ir_mode(type);
1945 res = get_value(var->v.value_number, mode);
1946 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1947 set_value(var->v.value_number, res);
1953 * Handle the assume optimizer hint.
1955 * @param dbi debug info
1956 * @param expr the IL assume expression
1958 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1959 switch(expression->kind) {
1960 case EXPR_BINARY_EQUAL:
1961 case EXPR_BINARY_NOTEQUAL:
1962 case EXPR_BINARY_LESS:
1963 case EXPR_BINARY_LESSEQUAL:
1964 case EXPR_BINARY_GREATER:
1965 case EXPR_BINARY_GREATEREQUAL:
1966 return handle_assume_compare(dbi, &expression->binary);
1972 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1974 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1975 type_t *type = skip_typeref(expression->base.type);
1977 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1978 return expression_to_addr(expression->value);
1980 const expression_t *value = expression->value;
1982 switch(expression->base.kind) {
1983 case EXPR_UNARY_NEGATE: {
1984 ir_node *value_node = expression_to_firm(value);
1985 ir_mode *mode = get_ir_mode(type);
1986 return new_d_Minus(dbgi, value_node, mode);
1988 case EXPR_UNARY_PLUS:
1989 return expression_to_firm(value);
1990 case EXPR_UNARY_BITWISE_NEGATE: {
1991 ir_node *value_node = expression_to_firm(value);
1992 ir_mode *mode = get_ir_mode(type);
1993 return new_d_Not(dbgi, value_node, mode);
1995 case EXPR_UNARY_NOT: {
1996 ir_node *value_node = _expression_to_firm(value);
1997 value_node = create_conv(dbgi, value_node, mode_b);
1998 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2001 case EXPR_UNARY_DEREFERENCE: {
2002 ir_node *value_node = expression_to_firm(value);
2003 type_t *value_type = skip_typeref(value->base.type);
2004 assert(is_type_pointer(value_type));
2005 type_t *points_to = value_type->pointer.points_to;
2006 return deref_address(dbgi, points_to, value_node);
2008 case EXPR_UNARY_POSTFIX_INCREMENT:
2009 case EXPR_UNARY_POSTFIX_DECREMENT:
2010 case EXPR_UNARY_PREFIX_INCREMENT:
2011 case EXPR_UNARY_PREFIX_DECREMENT:
2012 return create_incdec(expression);
2013 case EXPR_UNARY_CAST: {
2014 ir_node *value_node = expression_to_firm(value);
2015 if (is_type_scalar(type)) {
2016 ir_mode *mode = get_ir_mode(type);
2017 ir_node *node = create_conv(dbgi, value_node, mode);
2018 node = do_strict_conv(dbgi, node);
2021 /* make sure firm type is constructed */
2022 (void) get_ir_type(type);
2026 case EXPR_UNARY_CAST_IMPLICIT: {
2027 ir_node *value_node = expression_to_firm(value);
2028 if (is_type_scalar(type)) {
2029 ir_mode *mode = get_ir_mode(type);
2030 return create_conv(dbgi, value_node, mode);
2035 case EXPR_UNARY_ASSUME:
2036 if (firm_opt.confirm)
2037 return handle_assume(dbgi, value);
2044 panic("invalid UNEXPR type found");
2048 * produces a 0/1 depending of the value of a mode_b node
2050 static ir_node *produce_condition_result(const expression_t *expression,
2053 ir_mode *mode = get_ir_mode(expression->base.type);
2054 ir_node *cur_block = get_cur_block();
2056 ir_node *one_block = new_immBlock();
2057 ir_node *one = new_Const(mode, get_mode_one(mode));
2058 ir_node *jmp_one = new_d_Jmp(dbgi);
2060 ir_node *zero_block = new_immBlock();
2061 ir_node *zero = new_Const(mode, get_mode_null(mode));
2062 ir_node *jmp_zero = new_d_Jmp(dbgi);
2064 set_cur_block(cur_block);
2065 create_condition_evaluation(expression, one_block, zero_block);
2066 mature_immBlock(one_block);
2067 mature_immBlock(zero_block);
2069 ir_node *common_block = new_immBlock();
2070 add_immBlock_pred(common_block, jmp_one);
2071 add_immBlock_pred(common_block, jmp_zero);
2072 mature_immBlock(common_block);
2074 ir_node *in[2] = { one, zero };
2075 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2080 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2081 ir_node *value, type_t *type)
2083 pointer_type_t *const pointer_type = &type->pointer;
2084 type_t *const points_to = pointer_type->points_to;
2085 unsigned elem_size = get_type_size_const(points_to);
2088 if (elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) {
2092 assert(elem_size >= 1);
2096 value = create_conv(dbgi, value, mode_int);
2097 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2098 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2102 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2103 ir_node *left, ir_node *right)
2106 type_t *type_left = skip_typeref(expression->left->base.type);
2107 type_t *type_right = skip_typeref(expression->right->base.type);
2109 expression_kind_t kind = expression->base.kind;
2112 case EXPR_BINARY_SHIFTLEFT:
2113 case EXPR_BINARY_SHIFTRIGHT:
2114 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2115 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2116 mode = get_irn_mode(left);
2117 right = create_conv(dbgi, right, mode_uint);
2120 case EXPR_BINARY_SUB:
2121 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2122 const pointer_type_t *const ptr_type = &type_left->pointer;
2124 mode = get_ir_mode(expression->base.type);
2125 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2126 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2127 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2128 ir_node *const no_mem = new_NoMem();
2129 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2130 mode, op_pin_state_floats);
2131 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2134 case EXPR_BINARY_SUB_ASSIGN:
2135 if (is_type_pointer(type_left)) {
2136 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2137 mode = get_ir_mode(type_left);
2142 case EXPR_BINARY_ADD:
2143 case EXPR_BINARY_ADD_ASSIGN:
2144 if (is_type_pointer(type_left)) {
2145 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2146 mode = get_ir_mode(type_left);
2148 } else if (is_type_pointer(type_right)) {
2149 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2150 mode = get_ir_mode(type_right);
2157 mode = get_irn_mode(right);
2158 left = create_conv(dbgi, left, mode);
2163 case EXPR_BINARY_ADD_ASSIGN:
2164 case EXPR_BINARY_ADD:
2165 return new_d_Add(dbgi, left, right, mode);
2166 case EXPR_BINARY_SUB_ASSIGN:
2167 case EXPR_BINARY_SUB:
2168 return new_d_Sub(dbgi, left, right, mode);
2169 case EXPR_BINARY_MUL_ASSIGN:
2170 case EXPR_BINARY_MUL:
2171 return new_d_Mul(dbgi, left, right, mode);
2172 case EXPR_BINARY_BITWISE_AND:
2173 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2174 return new_d_And(dbgi, left, right, mode);
2175 case EXPR_BINARY_BITWISE_OR:
2176 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2177 return new_d_Or(dbgi, left, right, mode);
2178 case EXPR_BINARY_BITWISE_XOR:
2179 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2180 return new_d_Eor(dbgi, left, right, mode);
2181 case EXPR_BINARY_SHIFTLEFT:
2182 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2183 return new_d_Shl(dbgi, left, right, mode);
2184 case EXPR_BINARY_SHIFTRIGHT:
2185 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2186 if (mode_is_signed(mode)) {
2187 return new_d_Shrs(dbgi, left, right, mode);
2189 return new_d_Shr(dbgi, left, right, mode);
2191 case EXPR_BINARY_DIV:
2192 case EXPR_BINARY_DIV_ASSIGN: {
2193 ir_node *pin = new_Pin(new_NoMem());
2196 if (mode_is_float(mode)) {
2197 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2198 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2200 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2201 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2205 case EXPR_BINARY_MOD:
2206 case EXPR_BINARY_MOD_ASSIGN: {
2207 ir_node *pin = new_Pin(new_NoMem());
2208 assert(!mode_is_float(mode));
2209 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2210 op_pin_state_floats);
2211 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2215 panic("unexpected expression kind");
2219 static ir_node *create_lazy_op(const binary_expression_t *expression)
2221 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2222 type_t *type = expression->base.type;
2223 ir_mode *mode = get_ir_mode(type);
2225 if (is_constant_expression(expression->left)) {
2226 long val = fold_constant(expression->left);
2227 expression_kind_t ekind = expression->base.kind;
2228 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2229 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2230 return expression_to_firm(expression->right);
2232 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2233 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2234 return new_Const(mode, get_mode_one(mode));
2238 return produce_condition_result((const expression_t*) expression, dbgi);
2241 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2242 ir_node *right, ir_mode *mode);
2244 static ir_node *create_assign_binop(const binary_expression_t *expression)
2246 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2247 const expression_t *left_expr = expression->left;
2248 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2249 ir_node *left_addr = expression_to_addr(left_expr);
2250 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2251 ir_node *right = expression_to_firm(expression->right);
2252 ir_node *result = create_op(dbgi, expression, left, right);
2254 result = create_conv(dbgi, result, left_mode);
2255 result = do_strict_conv(dbgi, result);
2257 set_value_for_expression_addr(left_expr, result, left_addr);
2262 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2264 expression_kind_t kind = expression->base.kind;
2267 case EXPR_BINARY_EQUAL:
2268 case EXPR_BINARY_NOTEQUAL:
2269 case EXPR_BINARY_LESS:
2270 case EXPR_BINARY_LESSEQUAL:
2271 case EXPR_BINARY_GREATER:
2272 case EXPR_BINARY_GREATEREQUAL:
2273 case EXPR_BINARY_ISGREATER:
2274 case EXPR_BINARY_ISGREATEREQUAL:
2275 case EXPR_BINARY_ISLESS:
2276 case EXPR_BINARY_ISLESSEQUAL:
2277 case EXPR_BINARY_ISLESSGREATER:
2278 case EXPR_BINARY_ISUNORDERED: {
2279 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2280 ir_node *left = expression_to_firm(expression->left);
2281 ir_node *right = expression_to_firm(expression->right);
2282 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2283 long pnc = get_pnc(kind, expression->left->base.type);
2284 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2287 case EXPR_BINARY_ASSIGN: {
2288 ir_node *addr = expression_to_addr(expression->left);
2289 ir_node *right = expression_to_firm(expression->right);
2290 set_value_for_expression_addr(expression->left, right, addr);
2294 case EXPR_BINARY_ADD:
2295 case EXPR_BINARY_SUB:
2296 case EXPR_BINARY_MUL:
2297 case EXPR_BINARY_DIV:
2298 case EXPR_BINARY_MOD:
2299 case EXPR_BINARY_BITWISE_AND:
2300 case EXPR_BINARY_BITWISE_OR:
2301 case EXPR_BINARY_BITWISE_XOR:
2302 case EXPR_BINARY_SHIFTLEFT:
2303 case EXPR_BINARY_SHIFTRIGHT:
2305 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2306 ir_node *left = expression_to_firm(expression->left);
2307 ir_node *right = expression_to_firm(expression->right);
2308 return create_op(dbgi, expression, left, right);
2310 case EXPR_BINARY_LOGICAL_AND:
2311 case EXPR_BINARY_LOGICAL_OR:
2312 return create_lazy_op(expression);
2313 case EXPR_BINARY_COMMA:
2314 /* create side effects of left side */
2315 (void) expression_to_firm(expression->left);
2316 return _expression_to_firm(expression->right);
2318 case EXPR_BINARY_ADD_ASSIGN:
2319 case EXPR_BINARY_SUB_ASSIGN:
2320 case EXPR_BINARY_MUL_ASSIGN:
2321 case EXPR_BINARY_MOD_ASSIGN:
2322 case EXPR_BINARY_DIV_ASSIGN:
2323 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2324 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2325 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2326 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2327 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2328 return create_assign_binop(expression);
2329 case EXPR_BINARY_BUILTIN_EXPECT:
2330 return _expression_to_firm(expression->left);
2332 panic("TODO binexpr type");
2336 static ir_node *array_access_addr(const array_access_expression_t *expression)
2338 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2339 ir_node *base_addr = expression_to_firm(expression->array_ref);
2340 ir_node *offset = expression_to_firm(expression->index);
2342 type_t *offset_type = skip_typeref(expression->index->base.type);
2344 if (is_type_signed(offset_type)) {
2345 mode = get_ir_mode(type_ssize_t);
2347 mode = get_ir_mode(type_size_t);
2349 offset = create_conv(dbgi, offset, mode);
2351 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2352 assert(is_type_pointer(ref_type));
2353 pointer_type_t *pointer_type = &ref_type->pointer;
2355 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2356 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2357 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2359 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2364 static ir_node *array_access_to_firm(
2365 const array_access_expression_t *expression)
2367 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2368 ir_node *addr = array_access_addr(expression);
2369 type_t *type = revert_automatic_type_conversion(
2370 (const expression_t*) expression);
2371 type = skip_typeref(type);
2373 return deref_address(dbgi, type, addr);
2376 static long get_offsetof_offset(const offsetof_expression_t *expression)
2378 type_t *orig_type = expression->type;
2381 designator_t *designator = expression->designator;
2382 for( ; designator != NULL; designator = designator->next) {
2383 type_t *type = skip_typeref(orig_type);
2384 /* be sure the type is constructed */
2385 (void) get_ir_type(type);
2387 if (designator->symbol != NULL) {
2388 assert(is_type_compound(type));
2389 symbol_t *symbol = designator->symbol;
2391 declaration_t *declaration = type->compound.declaration;
2392 declaration_t *iter = declaration->scope.declarations;
2393 for( ; iter != NULL; iter = iter->next) {
2394 if (iter->symbol == symbol) {
2398 assert(iter != NULL);
2400 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2401 offset += get_entity_offset(iter->v.entity);
2403 orig_type = iter->type;
2405 expression_t *array_index = designator->array_index;
2406 assert(designator->array_index != NULL);
2407 assert(is_type_array(type));
2408 assert(is_type_valid(array_index->base.type));
2410 long index = fold_constant(array_index);
2411 ir_type *arr_type = get_ir_type(type);
2412 ir_type *elem_type = get_array_element_type(arr_type);
2413 long elem_size = get_type_size_bytes(elem_type);
2415 offset += index * elem_size;
2417 orig_type = type->array.element_type;
2424 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2426 ir_mode *mode = get_ir_mode(expression->base.type);
2427 long offset = get_offsetof_offset(expression);
2428 tarval *tv = new_tarval_from_long(offset, mode);
2429 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2431 return new_d_Const(dbgi, mode, tv);
2434 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2435 ir_entity *entity, type_t *type);
2437 static ir_node *compound_literal_to_firm(
2438 const compound_literal_expression_t *expression)
2440 type_t *type = expression->type;
2442 /* create an entity on the stack */
2443 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2445 ident *const id = id_unique("CompLit.%u");
2446 ir_type *const irtype = get_ir_type(type);
2447 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2448 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2449 set_entity_ld_ident(entity, id);
2451 set_entity_variability(entity, variability_uninitialized);
2453 /* create initialisation code */
2454 initializer_t *initializer = expression->initializer;
2455 create_local_initializer(initializer, dbgi, entity, type);
2457 /* create a sel for the compound literal address */
2458 ir_node *frame = get_local_frame(entity);
2459 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2464 * Transform a sizeof expression into Firm code.
2466 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2468 type_t *type = expression->type;
2470 type = expression->tp_expression->base.type;
2471 assert(type != NULL);
2474 type = skip_typeref(type);
2475 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2476 if (is_type_array(type) && type->array.is_vla
2477 && expression->tp_expression != NULL) {
2478 expression_to_firm(expression->tp_expression);
2481 return get_type_size(type);
2485 * Transform an alignof expression into Firm code.
2487 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2489 type_t *type = expression->type;
2491 /* beware: if expression is a variable reference, return the
2492 alignment of the variable. */
2493 const expression_t *tp_expression = expression->tp_expression;
2494 const declaration_t *declaration = expr_is_variable(tp_expression);
2495 if (declaration != NULL) {
2496 /* TODO: get the alignment of this variable. */
2498 type = tp_expression->base.type;
2499 assert(type != NULL);
2502 ir_mode *const mode = get_ir_mode(expression->base.type);
2503 symconst_symbol sym;
2504 sym.type_p = get_ir_type(type);
2505 return new_SymConst(mode, sym, symconst_type_align);
2508 static void init_ir_types(void);
2509 long fold_constant(const expression_t *expression)
2511 bool constant_folding_old = constant_folding;
2512 constant_folding = true;
2516 assert(is_constant_expression(expression));
2518 ir_graph *old_current_ir_graph = current_ir_graph;
2519 if (current_ir_graph == NULL) {
2520 current_ir_graph = get_const_code_irg();
2523 ir_node *cnst = expression_to_firm(expression);
2524 current_ir_graph = old_current_ir_graph;
2526 if (!is_Const(cnst)) {
2527 panic("couldn't fold constant\n");
2530 tarval *tv = get_Const_tarval(cnst);
2531 if (!tarval_is_long(tv)) {
2532 panic("result of constant folding is not integer\n");
2535 constant_folding = constant_folding_old;
2537 return get_tarval_long(tv);
2540 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2542 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2544 /* first try to fold a constant condition */
2545 if (is_constant_expression(expression->condition)) {
2546 long val = fold_constant(expression->condition);
2548 return expression_to_firm(expression->true_expression);
2550 return expression_to_firm(expression->false_expression);
2554 ir_node *cur_block = get_cur_block();
2556 /* create the true block */
2557 ir_node *true_block = new_immBlock();
2559 ir_node *true_val = expression_to_firm(expression->true_expression);
2560 ir_node *true_jmp = new_Jmp();
2562 /* create the false block */
2563 ir_node *false_block = new_immBlock();
2565 ir_node *false_val = expression_to_firm(expression->false_expression);
2566 ir_node *false_jmp = new_Jmp();
2568 /* create the condition evaluation */
2569 set_cur_block(cur_block);
2570 create_condition_evaluation(expression->condition, true_block, false_block);
2571 mature_immBlock(true_block);
2572 mature_immBlock(false_block);
2574 /* create the common block */
2575 ir_node *common_block = new_immBlock();
2576 add_immBlock_pred(common_block, true_jmp);
2577 add_immBlock_pred(common_block, false_jmp);
2578 mature_immBlock(common_block);
2580 /* TODO improve static semantics, so either both or no values are NULL */
2581 if (true_val == NULL || false_val == NULL)
2584 ir_node *in[2] = { true_val, false_val };
2585 ir_mode *mode = get_irn_mode(true_val);
2586 assert(get_irn_mode(false_val) == mode);
2587 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2593 * Returns an IR-node representing the address of a field.
2595 static ir_node *select_addr(const select_expression_t *expression)
2597 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2599 ir_node *compound_addr = expression_to_firm(expression->compound);
2601 /* make sure the type is constructed */
2602 type_t *type = skip_typeref(expression->compound->base.type);
2603 if (is_type_pointer(type)) {
2604 type = type->pointer.points_to;
2606 (void) get_ir_type(type);
2608 declaration_t *entry = expression->compound_entry;
2609 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2610 ir_entity *entity = entry->v.entity;
2612 assert(entity != NULL);
2614 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2619 static ir_node *select_to_firm(const select_expression_t *expression)
2621 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2622 ir_node *addr = select_addr(expression);
2623 type_t *type = revert_automatic_type_conversion(
2624 (const expression_t*) expression);
2625 type = skip_typeref(type);
2627 declaration_t *entry = expression->compound_entry;
2628 type_t *entry_type = skip_typeref(entry->type);
2630 if (entry_type->kind == TYPE_BITFIELD) {
2631 return bitfield_extract_to_firm(expression, addr);
2634 return deref_address(dbgi, type, addr);
2637 /* Values returned by __builtin_classify_type. */
2638 typedef enum gcc_type_class
2644 enumeral_type_class,
2647 reference_type_class,
2651 function_type_class,
2662 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2664 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2670 const atomic_type_t *const atomic_type = &type->atomic;
2671 switch (atomic_type->akind) {
2672 /* should not be reached */
2673 case ATOMIC_TYPE_INVALID:
2677 /* gcc cannot do that */
2678 case ATOMIC_TYPE_VOID:
2679 tc = void_type_class;
2682 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2683 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2684 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2685 case ATOMIC_TYPE_SHORT:
2686 case ATOMIC_TYPE_USHORT:
2687 case ATOMIC_TYPE_INT:
2688 case ATOMIC_TYPE_UINT:
2689 case ATOMIC_TYPE_LONG:
2690 case ATOMIC_TYPE_ULONG:
2691 case ATOMIC_TYPE_LONGLONG:
2692 case ATOMIC_TYPE_ULONGLONG:
2693 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2694 tc = integer_type_class;
2697 case ATOMIC_TYPE_FLOAT:
2698 case ATOMIC_TYPE_DOUBLE:
2699 case ATOMIC_TYPE_LONG_DOUBLE:
2700 tc = real_type_class;
2703 panic("Unexpected atomic type in classify_type_to_firm().");
2706 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2707 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2708 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2709 case TYPE_ARRAY: /* gcc handles this as pointer */
2710 case TYPE_FUNCTION: /* gcc handles this as pointer */
2711 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2712 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2713 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2715 /* gcc handles this as integer */
2716 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2719 /* typedef/typeof should be skipped already */
2726 panic("unexpected TYPE classify_type_to_firm().");
2729 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2730 ir_mode *const mode = mode_int;
2731 tarval *const tv = new_tarval_from_long(tc, mode);
2732 return new_d_Const(dbgi, mode, tv);
2735 static ir_node *function_name_to_firm(
2736 const funcname_expression_t *const expr)
2738 switch(expr->kind) {
2739 case FUNCNAME_FUNCTION:
2740 case FUNCNAME_PRETTY_FUNCTION:
2741 case FUNCNAME_FUNCDNAME:
2742 if (current_function_name == NULL) {
2743 const source_position_t *const src_pos = &expr->base.source_position;
2744 const char *const name = current_function_decl->symbol->string;
2745 const string_t string = { name, strlen(name) + 1 };
2746 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2748 return current_function_name;
2749 case FUNCNAME_FUNCSIG:
2750 if (current_funcsig == NULL) {
2751 const source_position_t *const src_pos = &expr->base.source_position;
2752 ir_entity *ent = get_irg_entity(current_ir_graph);
2753 const char *const name = get_entity_ld_name(ent);
2754 const string_t string = { name, strlen(name) + 1 };
2755 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2757 return current_funcsig;
2759 panic("Unsupported function name");
2762 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2764 statement_t *statement = expr->statement;
2766 assert(statement->kind == STATEMENT_COMPOUND);
2767 return compound_statement_to_firm(&statement->compound);
2770 static ir_node *va_start_expression_to_firm(
2771 const va_start_expression_t *const expr)
2773 ir_type *const method_type = get_ir_type(current_function_decl->type);
2774 int const n = get_method_n_params(method_type) - 1;
2775 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2776 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2777 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2778 ir_node *const no_mem = new_NoMem();
2779 ir_node *const arg_sel =
2780 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2782 ir_node *const cnst = get_type_size(expr->parameter->type);
2783 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2784 set_value_for_expression(expr->ap, add);
2789 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2791 type_t *const type = expr->base.type;
2792 expression_t *const ap_expr = expr->ap;
2793 ir_node *const ap_addr = expression_to_addr(ap_expr);
2794 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2795 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2796 ir_node *const res = deref_address(dbgi, type, ap);
2798 ir_node *const cnst = get_type_size(expr->base.type);
2799 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2801 set_value_for_expression_addr(ap_expr, add, ap_addr);
2806 static ir_node *dereference_addr(const unary_expression_t *const expression)
2808 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2809 return expression_to_firm(expression->value);
2813 * Returns a IR-node representing an lvalue of the given expression.
2815 static ir_node *expression_to_addr(const expression_t *expression)
2817 switch(expression->kind) {
2818 case EXPR_REFERENCE:
2819 return reference_addr(&expression->reference);
2820 case EXPR_ARRAY_ACCESS:
2821 return array_access_addr(&expression->array_access);
2823 return select_addr(&expression->select);
2825 return call_expression_to_firm(&expression->call);
2826 case EXPR_UNARY_DEREFERENCE: {
2827 return dereference_addr(&expression->unary);
2832 panic("trying to get address of non-lvalue");
2835 static ir_node *builtin_constant_to_firm(
2836 const builtin_constant_expression_t *expression)
2838 ir_mode *mode = get_ir_mode(expression->base.type);
2841 if (is_constant_expression(expression->value)) {
2846 return new_Const_long(mode, v);
2849 static ir_node *builtin_prefetch_to_firm(
2850 const builtin_prefetch_expression_t *expression)
2852 ir_node *adr = expression_to_firm(expression->adr);
2853 /* no Firm support for prefetch yet */
2859 * creates firm nodes for an expression. The difference between this function
2860 * and expression_to_firm is, that this version might produce mode_b nodes
2861 * instead of mode_Is.
2863 static ir_node *_expression_to_firm(const expression_t *expression)
2866 if (!constant_folding) {
2867 assert(!expression->base.transformed);
2868 ((expression_t*) expression)->base.transformed = true;
2872 switch(expression->kind) {
2873 case EXPR_CHARACTER_CONSTANT:
2874 return character_constant_to_firm(&expression->conste);
2875 case EXPR_WIDE_CHARACTER_CONSTANT:
2876 return wide_character_constant_to_firm(&expression->conste);
2878 return const_to_firm(&expression->conste);
2879 case EXPR_STRING_LITERAL:
2880 return string_literal_to_firm(&expression->string);
2881 case EXPR_WIDE_STRING_LITERAL:
2882 return wide_string_literal_to_firm(&expression->wide_string);
2883 case EXPR_REFERENCE:
2884 return reference_expression_to_firm(&expression->reference);
2886 return call_expression_to_firm(&expression->call);
2888 return unary_expression_to_firm(&expression->unary);
2890 return binary_expression_to_firm(&expression->binary);
2891 case EXPR_ARRAY_ACCESS:
2892 return array_access_to_firm(&expression->array_access);
2894 return sizeof_to_firm(&expression->typeprop);
2896 return alignof_to_firm(&expression->typeprop);
2897 case EXPR_CONDITIONAL:
2898 return conditional_to_firm(&expression->conditional);
2900 return select_to_firm(&expression->select);
2901 case EXPR_CLASSIFY_TYPE:
2902 return classify_type_to_firm(&expression->classify_type);
2904 return function_name_to_firm(&expression->funcname);
2905 case EXPR_STATEMENT:
2906 return statement_expression_to_firm(&expression->statement);
2908 return va_start_expression_to_firm(&expression->va_starte);
2910 return va_arg_expression_to_firm(&expression->va_arge);
2911 case EXPR_BUILTIN_SYMBOL:
2912 panic("unimplemented expression found");
2913 case EXPR_BUILTIN_CONSTANT_P:
2914 return builtin_constant_to_firm(&expression->builtin_constant);
2915 case EXPR_BUILTIN_PREFETCH:
2916 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2918 return offsetof_to_firm(&expression->offsetofe);
2919 case EXPR_COMPOUND_LITERAL:
2920 return compound_literal_to_firm(&expression->compound_literal);
2926 panic("invalid expression found");
2929 static bool produces_mode_b(const expression_t *expression)
2931 switch (expression->kind) {
2932 case EXPR_BINARY_EQUAL:
2933 case EXPR_BINARY_NOTEQUAL:
2934 case EXPR_BINARY_LESS:
2935 case EXPR_BINARY_LESSEQUAL:
2936 case EXPR_BINARY_GREATER:
2937 case EXPR_BINARY_GREATEREQUAL:
2938 case EXPR_BINARY_ISGREATER:
2939 case EXPR_BINARY_ISGREATEREQUAL:
2940 case EXPR_BINARY_ISLESS:
2941 case EXPR_BINARY_ISLESSEQUAL:
2942 case EXPR_BINARY_ISLESSGREATER:
2943 case EXPR_BINARY_ISUNORDERED:
2944 case EXPR_UNARY_NOT:
2947 case EXPR_BINARY_BUILTIN_EXPECT:
2948 return produces_mode_b(expression->binary.left);
2949 case EXPR_BINARY_COMMA:
2950 return produces_mode_b(expression->binary.right);
2957 static ir_node *expression_to_firm(const expression_t *expression)
2959 if (!produces_mode_b(expression)) {
2960 ir_node *res = _expression_to_firm(expression);
2961 assert(res == NULL || get_irn_mode(res) != mode_b);
2965 if (is_constant_expression(expression)) {
2966 ir_node *res = _expression_to_firm(expression);
2967 ir_mode *mode = get_ir_mode(expression->base.type);
2968 assert(is_Const(res));
2969 if (is_Const_null(res)) {
2970 return new_Const_long(mode, 0);
2972 return new_Const_long(mode, 1);
2976 /* we have to produce a 0/1 from the mode_b expression */
2977 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2978 return produce_condition_result(expression, dbgi);
2981 static ir_node *expression_to_modeb(const expression_t *expression)
2983 ir_node *res = _expression_to_firm(expression);
2984 res = create_conv(NULL, res, mode_b);
2990 * create a short-circuit expression evaluation that tries to construct
2991 * efficient control flow structures for &&, || and ! expressions
2993 static void create_condition_evaluation(const expression_t *expression,
2994 ir_node *true_block,
2995 ir_node *false_block)
2997 switch(expression->kind) {
2998 case EXPR_UNARY_NOT: {
2999 const unary_expression_t *unary_expression = &expression->unary;
3000 create_condition_evaluation(unary_expression->value, false_block,
3004 case EXPR_BINARY_LOGICAL_AND: {
3005 const binary_expression_t *binary_expression = &expression->binary;
3007 ir_node *cur_block = get_cur_block();
3008 ir_node *extra_block = new_immBlock();
3009 set_cur_block(cur_block);
3010 create_condition_evaluation(binary_expression->left, extra_block,
3012 mature_immBlock(extra_block);
3013 set_cur_block(extra_block);
3014 create_condition_evaluation(binary_expression->right, true_block,
3018 case EXPR_BINARY_LOGICAL_OR: {
3019 const binary_expression_t *binary_expression = &expression->binary;
3021 ir_node *cur_block = get_cur_block();
3022 ir_node *extra_block = new_immBlock();
3023 set_cur_block(cur_block);
3024 create_condition_evaluation(binary_expression->left, true_block,
3026 mature_immBlock(extra_block);
3027 set_cur_block(extra_block);
3028 create_condition_evaluation(binary_expression->right, true_block,
3036 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3037 ir_node *condition = expression_to_modeb(expression);
3038 ir_node *cond = new_d_Cond(dbgi, condition);
3039 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3040 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3042 /* set branch prediction info based on __builtin_expect */
3043 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3044 long cnst = fold_constant(expression->binary.right);
3045 cond_jmp_predicate pred;
3048 pred = COND_JMP_PRED_FALSE;
3050 pred = COND_JMP_PRED_TRUE;
3052 set_Cond_jmp_pred(cond, pred);
3055 add_immBlock_pred(true_block, true_proj);
3056 if (false_block != NULL) {
3057 add_immBlock_pred(false_block, false_proj);
3060 set_cur_block(NULL);
3065 static void create_declaration_entity(declaration_t *declaration,
3066 declaration_kind_t declaration_kind,
3067 ir_type *parent_type)
3069 type_t *const type = skip_typeref(declaration->type);
3070 if (is_type_function(type)) {
3071 (void) get_function_entity(declaration);
3075 ident *const id = new_id_from_str(declaration->symbol->string);
3076 ir_type *const irtype = get_ir_type(type);
3077 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3078 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3080 declaration->declaration_kind = (unsigned char) declaration_kind;
3081 declaration->v.entity = entity;
3082 set_entity_variability(entity, variability_uninitialized);
3083 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3084 if (parent_type == get_tls_type())
3085 set_entity_allocation(entity, allocation_automatic);
3086 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3087 set_entity_allocation(entity, allocation_static);
3089 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3090 set_entity_volatility(entity, volatility_is_volatile);
3095 typedef struct type_path_entry_t type_path_entry_t;
3096 struct type_path_entry_t {
3098 ir_initializer_t *initializer;
3100 declaration_t *compound_entry;
3103 typedef struct type_path_t type_path_t;
3104 struct type_path_t {
3105 type_path_entry_t *path;
3110 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3112 size_t len = ARR_LEN(path->path);
3114 for(size_t i = 0; i < len; ++i) {
3115 const type_path_entry_t *entry = & path->path[i];
3117 type_t *type = skip_typeref(entry->type);
3118 if (is_type_compound(type)) {
3119 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3120 } else if (is_type_array(type)) {
3121 fprintf(stderr, "[%zd]", entry->index);
3123 fprintf(stderr, "-INVALID-");
3126 fprintf(stderr, " (");
3127 print_type(path->top_type);
3128 fprintf(stderr, ")");
3131 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3133 size_t len = ARR_LEN(path->path);
3135 return & path->path[len-1];
3138 static type_path_entry_t *append_to_type_path(type_path_t *path)
3140 size_t len = ARR_LEN(path->path);
3141 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3143 type_path_entry_t *result = & path->path[len];
3144 memset(result, 0, sizeof(result[0]));
3148 static size_t get_compound_size(const compound_type_t *type)
3150 declaration_t *declaration = type->declaration;
3151 declaration_t *member = declaration->scope.declarations;
3153 for( ; member != NULL; member = member->next) {
3156 /* TODO: cache results? */
3161 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3163 type_t *orig_top_type = path->top_type;
3164 type_t *top_type = skip_typeref(orig_top_type);
3166 assert(is_type_compound(top_type) || is_type_array(top_type));
3168 if (ARR_LEN(path->path) == 0) {
3171 type_path_entry_t *top = get_type_path_top(path);
3172 ir_initializer_t *initializer = top->initializer;
3173 return get_initializer_compound_value(initializer, top->index);
3177 static void descend_into_subtype(type_path_t *path)
3179 type_t *orig_top_type = path->top_type;
3180 type_t *top_type = skip_typeref(orig_top_type);
3182 assert(is_type_compound(top_type) || is_type_array(top_type));
3184 ir_initializer_t *initializer = get_initializer_entry(path);
3186 type_path_entry_t *top = append_to_type_path(path);
3187 top->type = top_type;
3191 if (is_type_compound(top_type)) {
3192 declaration_t *declaration = top_type->compound.declaration;
3193 declaration_t *entry = declaration->scope.declarations;
3195 top->compound_entry = entry;
3197 len = get_compound_size(&top_type->compound);
3199 path->top_type = entry->type;
3201 assert(is_type_array(top_type));
3202 assert(top_type->array.size > 0);
3205 path->top_type = top_type->array.element_type;
3206 len = top_type->array.size;
3208 if (initializer == NULL
3209 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3210 initializer = create_initializer_compound(len);
3211 /* we have to set the entry at the 2nd latest path entry... */
3212 size_t path_len = ARR_LEN(path->path);
3213 assert(path_len >= 1);
3215 type_path_entry_t *entry = & path->path[path_len-2];
3216 ir_initializer_t *tinitializer = entry->initializer;
3217 set_initializer_compound_value(tinitializer, entry->index,
3221 top->initializer = initializer;
3224 static void ascend_from_subtype(type_path_t *path)
3226 type_path_entry_t *top = get_type_path_top(path);
3228 path->top_type = top->type;
3230 size_t len = ARR_LEN(path->path);
3231 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3234 static void walk_designator(type_path_t *path, const designator_t *designator)
3236 /* designators start at current object type */
3237 ARR_RESIZE(type_path_entry_t, path->path, 1);
3239 for( ; designator != NULL; designator = designator->next) {
3240 type_path_entry_t *top = get_type_path_top(path);
3241 type_t *orig_type = top->type;
3242 type_t *type = skip_typeref(orig_type);
3244 if (designator->symbol != NULL) {
3245 assert(is_type_compound(type));
3247 symbol_t *symbol = designator->symbol;
3249 declaration_t *declaration = type->compound.declaration;
3250 declaration_t *iter = declaration->scope.declarations;
3251 for( ; iter != NULL; iter = iter->next, ++index) {
3252 if (iter->symbol == symbol) {
3256 assert(iter != NULL);
3258 top->type = orig_type;
3259 top->compound_entry = iter;
3261 orig_type = iter->type;
3263 expression_t *array_index = designator->array_index;
3264 assert(designator->array_index != NULL);
3265 assert(is_type_array(type));
3266 assert(is_type_valid(array_index->base.type));
3268 long index = fold_constant(array_index);
3271 if (type->array.size_constant == 1) {
3272 long array_size = type->array.size;
3273 assert(index < array_size);
3277 top->type = orig_type;
3278 top->index = (size_t) index;
3279 orig_type = type->array.element_type;
3281 path->top_type = orig_type;
3283 if (designator->next != NULL) {
3284 descend_into_subtype(path);
3288 path->invalid = false;
3291 static void advance_current_object(type_path_t *path)
3293 if (path->invalid) {
3294 /* TODO: handle this... */
3295 panic("invalid initializer in ast2firm (excessive elements)");
3299 type_path_entry_t *top = get_type_path_top(path);
3301 type_t *type = skip_typeref(top->type);
3302 if (is_type_union(type)) {
3303 top->compound_entry = NULL;
3304 } else if (is_type_struct(type)) {
3305 declaration_t *entry = top->compound_entry;
3308 entry = entry->next;
3309 top->compound_entry = entry;
3310 if (entry != NULL) {
3311 path->top_type = entry->type;
3315 assert(is_type_array(type));
3318 if (!type->array.size_constant || top->index < type->array.size) {
3323 /* we're past the last member of the current sub-aggregate, try if we
3324 * can ascend in the type hierarchy and continue with another subobject */
3325 size_t len = ARR_LEN(path->path);
3328 ascend_from_subtype(path);
3329 advance_current_object(path);
3331 path->invalid = true;
3336 static ir_initializer_t *create_ir_initializer(
3337 const initializer_t *initializer, type_t *type);
3339 static ir_initializer_t *create_ir_initializer_value(
3340 const initializer_value_t *initializer)
3342 if (is_type_compound(initializer->value->base.type)) {
3343 panic("initializer creation for compounds not implemented yet");
3345 ir_node *value = expression_to_firm(initializer->value);
3346 return create_initializer_const(value);
3349 static ir_initializer_t *create_ir_initializer_list(
3350 const initializer_list_t *initializer, type_t *type)
3353 memset(&path, 0, sizeof(path));
3354 path.top_type = type;
3355 path.path = NEW_ARR_F(type_path_entry_t, 0);
3357 descend_into_subtype(&path);
3359 for(size_t i = 0; i < initializer->len; ++i) {
3360 const initializer_t *sub_initializer = initializer->initializers[i];
3362 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3363 walk_designator(&path, sub_initializer->designator.designator);
3367 if (sub_initializer->kind == INITIALIZER_VALUE) {
3368 /* we might have to descend into types until we're at a scalar
3371 type_t *orig_top_type = path.top_type;
3372 type_t *top_type = skip_typeref(orig_top_type);
3374 if (is_type_scalar(top_type))
3376 descend_into_subtype(&path);
3380 ir_initializer_t *sub_irinitializer
3381 = create_ir_initializer(sub_initializer, path.top_type);
3383 size_t path_len = ARR_LEN(path.path);
3384 assert(path_len >= 1);
3385 type_path_entry_t *entry = & path.path[path_len-1];
3386 ir_initializer_t *tinitializer = entry->initializer;
3387 set_initializer_compound_value(tinitializer, entry->index,
3390 advance_current_object(&path);
3393 assert(ARR_LEN(path.path) >= 1);
3394 ir_initializer_t *result = path.path[0].initializer;
3395 DEL_ARR_F(path.path);
3400 static ir_initializer_t *create_ir_initializer_string(
3401 const initializer_string_t *initializer, type_t *type)
3403 type = skip_typeref(type);
3405 size_t string_len = initializer->string.size;
3406 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3407 size_t len = type->array.size;
3408 ir_initializer_t *irinitializer = create_initializer_compound(len);
3410 const char *string = initializer->string.begin;
3411 ir_mode *mode = get_type_mode(ir_type_const_char);
3413 for(size_t i = 0; i < len; ++i) {
3418 tarval *tv = new_tarval_from_long(c, mode);
3419 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3421 set_initializer_compound_value(irinitializer, i, char_initializer);
3424 return irinitializer;
3427 static ir_initializer_t *create_ir_initializer_wide_string(
3428 const initializer_wide_string_t *initializer, type_t *type)
3430 size_t string_len = initializer->string.size;
3431 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3432 size_t len = type->array.size;
3433 ir_initializer_t *irinitializer = create_initializer_compound(len);
3435 const wchar_rep_t *string = initializer->string.begin;
3436 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3438 for(size_t i = 0; i < len; ++i) {
3440 if (i < string_len) {
3443 tarval *tv = new_tarval_from_long(c, mode);
3444 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3446 set_initializer_compound_value(irinitializer, i, char_initializer);
3449 return irinitializer;
3452 static ir_initializer_t *create_ir_initializer(
3453 const initializer_t *initializer, type_t *type)
3455 switch(initializer->kind) {
3456 case INITIALIZER_STRING:
3457 return create_ir_initializer_string(&initializer->string, type);
3459 case INITIALIZER_WIDE_STRING:
3460 return create_ir_initializer_wide_string(&initializer->wide_string,
3463 case INITIALIZER_LIST:
3464 return create_ir_initializer_list(&initializer->list, type);
3466 case INITIALIZER_VALUE:
3467 return create_ir_initializer_value(&initializer->value);
3469 case INITIALIZER_DESIGNATOR:
3470 panic("unexpected designator initializer found");
3472 panic("unknown initializer");
3475 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3478 if (is_atomic_type(type)) {
3479 ir_mode *mode = get_type_mode(type);
3480 tarval *zero = get_mode_null(mode);
3481 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3483 /* TODO: bitfields */
3484 ir_node *mem = get_store();
3485 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3486 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3489 assert(is_compound_type(type));
3492 if (is_Array_type(type)) {
3493 assert(has_array_upper_bound(type, 0));
3494 n_members = get_array_upper_bound_int(type, 0);
3496 n_members = get_compound_n_members(type);
3499 for(int i = 0; i < n_members; ++i) {
3502 if (is_Array_type(type)) {
3503 ir_entity *entity = get_array_element_entity(type);
3504 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3505 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3506 ir_node *in[1] = { cnst };
3507 irtype = get_array_element_type(type);
3508 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3510 ir_entity *member = get_compound_member(type, i);
3512 irtype = get_entity_type(member);
3513 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3516 create_dynamic_null_initializer(irtype, dbgi, addr);
3521 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3522 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3524 switch(get_initializer_kind(initializer)) {
3525 case IR_INITIALIZER_NULL: {
3526 create_dynamic_null_initializer(type, dbgi, base_addr);
3529 case IR_INITIALIZER_CONST: {
3530 ir_node *node = get_initializer_const_value(initializer);
3531 ir_mode *mode = get_irn_mode(node);
3532 assert(get_type_mode(type) == mode);
3534 /* TODO: bitfields... */
3535 ir_node *mem = get_store();
3536 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3537 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3541 case IR_INITIALIZER_TARVAL: {
3542 tarval *tv = get_initializer_tarval_value(initializer);
3543 ir_mode *mode = get_tarval_mode(tv);
3544 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3545 assert(get_type_mode(type) == mode);
3547 /* TODO: bitfields... */
3548 ir_node *mem = get_store();
3549 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3550 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3554 case IR_INITIALIZER_COMPOUND: {
3555 assert(is_compound_type(type));
3557 if (is_Array_type(type)) {
3558 assert(has_array_upper_bound(type, 0));
3559 n_members = get_array_upper_bound_int(type, 0);
3561 n_members = get_compound_n_members(type);
3564 if (get_initializer_compound_n_entries(initializer)
3565 != (unsigned) n_members)
3566 panic("initializer doesn't match compound type");
3568 for(int i = 0; i < n_members; ++i) {
3571 if (is_Array_type(type)) {
3572 ir_entity *entity = get_array_element_entity(type);
3573 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3574 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3575 ir_node *in[1] = { cnst };
3576 irtype = get_array_element_type(type);
3577 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3579 ir_entity *member = get_compound_member(type, i);
3581 irtype = get_entity_type(member);
3582 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3585 ir_initializer_t *sub_init
3586 = get_initializer_compound_value(initializer, i);
3588 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3594 panic("invalid IR_INITIALIZER found");
3597 static void create_dynamic_initializer(ir_initializer_t *initializer,
3598 dbg_info *dbgi, ir_entity *entity)
3600 ir_node *frame = get_local_frame(entity);
3601 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3602 ir_type *type = get_entity_type(entity);
3604 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3607 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3608 ir_entity *entity, type_t *type)
3610 ir_node *memory = get_store();
3611 ir_node *nomem = new_NoMem();
3612 ir_node *frame = get_irg_frame(current_ir_graph);
3613 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3615 if (initializer->kind == INITIALIZER_VALUE) {
3616 initializer_value_t *initializer_value = &initializer->value;
3618 ir_node *value = expression_to_firm(initializer_value->value);
3619 type = skip_typeref(type);
3620 assign_value(dbgi, addr, type, value);
3624 if (!is_constant_initializer(initializer)) {
3625 ir_initializer_t *irinitializer
3626 = create_ir_initializer(initializer, type);
3628 create_dynamic_initializer(irinitializer, dbgi, entity);
3632 /* create the ir_initializer */
3633 ir_graph *const old_current_ir_graph = current_ir_graph;
3634 current_ir_graph = get_const_code_irg();
3636 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3638 assert(current_ir_graph == get_const_code_irg());
3639 current_ir_graph = old_current_ir_graph;
3641 /* create a "template" entity which is copied to the entity on the stack */
3642 ident *const id = id_unique("initializer.%u");
3643 ir_type *const irtype = get_ir_type(type);
3644 ir_type *const global_type = get_glob_type();
3645 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3646 set_entity_ld_ident(init_entity, id);
3648 set_entity_variability(init_entity, variability_initialized);
3649 set_entity_visibility(init_entity, visibility_local);
3650 set_entity_allocation(init_entity, allocation_static);
3652 set_entity_initializer(init_entity, irinitializer);
3654 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3655 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3657 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3658 set_store(copyb_mem);
3661 static void create_initializer_local_variable_entity(declaration_t *declaration)
3663 initializer_t *initializer = declaration->init.initializer;
3664 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3665 ir_entity *entity = declaration->v.entity;
3666 type_t *type = declaration->type;
3667 create_local_initializer(initializer, dbgi, entity, type);
3670 static void create_declaration_initializer(declaration_t *declaration)
3672 initializer_t *initializer = declaration->init.initializer;
3673 if (initializer == NULL)
3676 declaration_kind_t declaration_kind
3677 = (declaration_kind_t) declaration->declaration_kind;
3678 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3679 create_initializer_local_variable_entity(declaration);
3683 type_t *type = skip_typeref(declaration->type);
3685 if (initializer->kind == INITIALIZER_VALUE) {
3686 initializer_value_t *initializer_value = &initializer->value;
3688 = get_dbg_info(&declaration->source_position);
3690 ir_node *value = expression_to_firm(initializer_value->value);
3691 value = do_strict_conv(dbgi, value);
3693 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3694 set_value(declaration->v.value_number, value);
3696 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3698 ir_entity *entity = declaration->v.entity;
3700 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3701 set_entity_variability(entity, variability_constant);
3703 set_entity_variability(entity, variability_initialized);
3705 set_atomic_ent_value(entity, value);
3708 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3709 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3711 ir_entity *entity = declaration->v.entity;
3712 ir_initializer_t *irinitializer
3713 = create_ir_initializer(initializer, type);
3715 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3716 set_entity_variability(entity, variability_constant);
3718 set_entity_variability(entity, variability_initialized);
3720 set_entity_initializer(entity, irinitializer);
3724 static void create_variable_length_array(declaration_t *declaration)
3726 /* initializers are not allowed for VLAs */
3727 assert(declaration->init.initializer == NULL);
3729 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3730 declaration->v.vla_base = NULL;
3732 /* TODO: record VLA somewhere so we create the free node when we leave
3736 static void allocate_variable_length_array(declaration_t *declaration)
3738 /* initializers are not allowed for VLAs */
3739 assert(declaration->init.initializer == NULL);
3740 assert(get_cur_block() != NULL);
3742 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3743 type_t *type = declaration->type;
3744 ir_type *el_type = get_ir_type(type->array.element_type);
3746 /* make sure size_node is calculated */
3747 get_type_size(type);
3748 ir_node *elems = type->array.size_node;
3749 ir_node *mem = get_store();
3750 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3752 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3753 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3756 assert(declaration->declaration_kind
3757 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3758 declaration->v.vla_base = addr;
3762 * Creates a Firm local variable from a declaration.
3764 static void create_local_variable(declaration_t *declaration)
3766 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3768 bool needs_entity = declaration->address_taken;
3769 type_t *type = skip_typeref(declaration->type);
3771 /* is it a variable length array? */
3772 if (is_type_array(type) && !type->array.size_constant) {
3773 create_variable_length_array(declaration);
3775 } else if (is_type_array(type) || is_type_compound(type)) {
3776 needs_entity = true;
3777 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3778 needs_entity = true;
3782 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3783 create_declaration_entity(declaration,
3784 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3787 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3788 declaration->v.value_number = next_value_number_function;
3789 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3790 ++next_value_number_function;
3794 static void create_local_static_variable(declaration_t *declaration)
3796 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3798 type_t *const type = skip_typeref(declaration->type);
3799 ir_type *const global_type = get_glob_type();
3800 ir_type *const irtype = get_ir_type(type);
3801 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3803 size_t l = strlen(declaration->symbol->string);
3804 char buf[l + sizeof(".%u")];
3805 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3806 ident *const id = id_unique(buf);
3808 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3810 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3811 set_entity_volatility(entity, volatility_is_volatile);
3814 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3815 declaration->v.entity = entity;
3816 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3817 set_entity_variability(entity, variability_uninitialized);
3818 set_entity_visibility(entity, visibility_local);
3819 set_entity_allocation(entity, allocation_static);
3821 ir_graph *const old_current_ir_graph = current_ir_graph;
3822 current_ir_graph = get_const_code_irg();
3824 create_declaration_initializer(declaration);
3826 assert(current_ir_graph == get_const_code_irg());
3827 current_ir_graph = old_current_ir_graph;
3832 static void return_statement_to_firm(return_statement_t *statement)
3834 if (get_cur_block() == NULL)
3837 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3838 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3843 if (get_method_n_ress(func_irtype) > 0) {
3844 ir_type *res_type = get_method_res_type(func_irtype, 0);
3846 if (statement->value != NULL) {
3847 ir_node *node = expression_to_firm(statement->value);
3848 node = do_strict_conv(dbgi, node);
3852 if (is_compound_type(res_type)) {
3855 mode = get_type_mode(res_type);
3857 in[0] = new_Unknown(mode);
3861 /* build return_value for its side effects */
3862 if (statement->value != NULL) {
3863 expression_to_firm(statement->value);
3868 ir_node *store = get_store();
3869 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3871 ir_node *end_block = get_irg_end_block(current_ir_graph);
3872 add_immBlock_pred(end_block, ret);
3874 set_cur_block(NULL);
3877 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3879 if (get_cur_block() == NULL)
3882 return expression_to_firm(statement->expression);
3885 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3887 declaration_t *declaration = compound->scope.declarations;
3888 for( ; declaration != NULL; declaration = declaration->next) {
3889 create_local_declaration(declaration);
3892 ir_node *result = NULL;
3893 statement_t *statement = compound->statements;
3894 for( ; statement != NULL; statement = statement->base.next) {
3895 if (statement->base.next == NULL
3896 && statement->kind == STATEMENT_EXPRESSION) {
3897 result = expression_statement_to_firm(
3898 &statement->expression);
3901 statement_to_firm(statement);
3907 static void create_global_variable(declaration_t *declaration)
3911 switch ((storage_class_tag_t)declaration->storage_class) {
3912 case STORAGE_CLASS_STATIC:
3913 vis = visibility_local;
3916 case STORAGE_CLASS_EXTERN:
3917 vis = visibility_external_allocated;
3920 case STORAGE_CLASS_NONE:
3921 vis = visibility_external_visible;
3924 case STORAGE_CLASS_THREAD:
3925 vis = visibility_external_visible;
3928 case STORAGE_CLASS_THREAD_EXTERN:
3929 vis = visibility_external_allocated;
3932 case STORAGE_CLASS_THREAD_STATIC:
3933 vis = visibility_local;
3937 var_type = get_tls_type();
3941 var_type = get_glob_type();
3945 create_declaration_entity(declaration,
3946 DECLARATION_KIND_GLOBAL_VARIABLE,
3948 if (!is_type_function(skip_typeref(declaration->type))) {
3949 set_entity_visibility(declaration->v.entity, vis);
3954 case STORAGE_CLASS_TYPEDEF:
3955 case STORAGE_CLASS_AUTO:
3956 case STORAGE_CLASS_REGISTER:
3957 case STORAGE_CLASS_ENUM_ENTRY:
3960 panic("Invalid storage class for global variable");
3963 static void create_local_declaration(declaration_t *declaration)
3965 if (declaration->namespc != NAMESPACE_NORMAL)
3967 /* construct type */
3968 (void) get_ir_type(declaration->type);
3969 if (declaration->symbol == NULL) {
3973 type_t *type = skip_typeref(declaration->type);
3975 switch ((storage_class_tag_t) declaration->storage_class) {
3976 case STORAGE_CLASS_STATIC:
3977 create_local_static_variable(declaration);
3979 case STORAGE_CLASS_EXTERN:
3980 create_global_variable(declaration);
3981 create_declaration_initializer(declaration);
3983 case STORAGE_CLASS_NONE:
3984 case STORAGE_CLASS_AUTO:
3985 case STORAGE_CLASS_REGISTER:
3986 if (is_type_function(type)) {
3987 if (declaration->init.statement != NULL) {
3988 panic("nested functions not supported yet");
3990 get_function_entity(declaration);
3993 create_local_variable(declaration);
3996 case STORAGE_CLASS_ENUM_ENTRY:
3997 /* should already be handled */
3998 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4000 case STORAGE_CLASS_TYPEDEF:
4001 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4003 case STORAGE_CLASS_THREAD:
4004 case STORAGE_CLASS_THREAD_EXTERN:
4005 case STORAGE_CLASS_THREAD_STATIC:
4008 panic("invalid storage class found");
4011 static void initialize_local_declaration(declaration_t *declaration)
4013 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4016 switch ((declaration_kind_t) declaration->declaration_kind) {
4017 case DECLARATION_KIND_LOCAL_VARIABLE:
4018 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4019 create_declaration_initializer(declaration);
4022 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4023 allocate_variable_length_array(declaration);
4026 case DECLARATION_KIND_LABEL_BLOCK:
4027 case DECLARATION_KIND_COMPOUND_MEMBER:
4028 case DECLARATION_KIND_GLOBAL_VARIABLE:
4029 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4030 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4031 case DECLARATION_KIND_FUNCTION:
4032 case DECLARATION_KIND_TYPE:
4033 case DECLARATION_KIND_ENUM_ENTRY:
4036 case DECLARATION_KIND_UNKNOWN:
4037 panic("can't initialize unknwon declaration");
4039 panic("invalid declaration kind");
4042 static void declaration_statement_to_firm(declaration_statement_t *statement)
4044 declaration_t *declaration = statement->declarations_begin;
4045 declaration_t *end = statement->declarations_end->next;
4046 for( ; declaration != end; declaration = declaration->next) {
4047 if (declaration->namespc != NAMESPACE_NORMAL)
4049 initialize_local_declaration(declaration);
4053 static void if_statement_to_firm(if_statement_t *statement)
4055 ir_node *cur_block = get_cur_block();
4057 ir_node *fallthrough_block = NULL;
4059 /* the true (blocks) */
4060 ir_node *true_block = NULL;
4061 if (statement->true_statement != NULL) {
4062 true_block = new_immBlock();
4063 statement_to_firm(statement->true_statement);
4064 if (get_cur_block() != NULL) {
4065 ir_node *jmp = new_Jmp();
4066 if (fallthrough_block == NULL)
4067 fallthrough_block = new_immBlock();
4068 add_immBlock_pred(fallthrough_block, jmp);
4072 /* the false (blocks) */
4073 ir_node *false_block = NULL;
4074 if (statement->false_statement != NULL) {
4075 false_block = new_immBlock();
4077 statement_to_firm(statement->false_statement);
4078 if (get_cur_block() != NULL) {
4079 ir_node *jmp = new_Jmp();
4080 if (fallthrough_block == NULL)
4081 fallthrough_block = new_immBlock();
4082 add_immBlock_pred(fallthrough_block, jmp);
4086 /* create the condition */
4087 if (cur_block != NULL) {
4088 if (true_block == NULL || false_block == NULL) {
4089 if (fallthrough_block == NULL)
4090 fallthrough_block = new_immBlock();
4091 if (true_block == NULL)
4092 true_block = fallthrough_block;
4093 if (false_block == NULL)
4094 false_block = fallthrough_block;
4097 set_cur_block(cur_block);
4098 create_condition_evaluation(statement->condition, true_block,
4102 mature_immBlock(true_block);
4103 if (false_block != fallthrough_block) {
4104 mature_immBlock(false_block);
4106 if (fallthrough_block != NULL) {
4107 mature_immBlock(fallthrough_block);
4110 set_cur_block(fallthrough_block);
4113 static void while_statement_to_firm(while_statement_t *statement)
4115 ir_node *jmp = NULL;
4116 if (get_cur_block() != NULL) {
4120 /* create the header block */
4121 ir_node *header_block = new_immBlock();
4123 add_immBlock_pred(header_block, jmp);
4127 ir_node *old_continue_label = continue_label;
4128 ir_node *old_break_label = break_label;
4129 continue_label = header_block;
4132 ir_node *body_block = new_immBlock();
4133 statement_to_firm(statement->body);
4134 ir_node *false_block = break_label;
4136 assert(continue_label == header_block);
4137 continue_label = old_continue_label;
4138 break_label = old_break_label;
4140 if (get_cur_block() != NULL) {
4142 add_immBlock_pred(header_block, jmp);
4145 /* shortcut for while(true) */
4146 if (is_constant_expression(statement->condition)
4147 && fold_constant(statement->condition) != 0) {
4148 set_cur_block(header_block);
4149 ir_node *header_jmp = new_Jmp();
4150 add_immBlock_pred(body_block, header_jmp);
4152 keep_alive(body_block);
4154 if (false_block == NULL) {
4155 false_block = new_immBlock();
4158 /* create the condition */
4159 set_cur_block(header_block);
4161 create_condition_evaluation(statement->condition, body_block,
4165 mature_immBlock(body_block);
4166 mature_immBlock(header_block);
4167 if (false_block != NULL) {
4168 mature_immBlock(false_block);
4171 set_cur_block(false_block);
4174 static void do_while_statement_to_firm(do_while_statement_t *statement)
4176 ir_node *jmp = NULL;
4177 if (get_cur_block() != NULL) {
4181 /* create the header block */
4182 ir_node *header_block = new_immBlock();
4185 ir_node *body_block = new_immBlock();
4187 add_immBlock_pred(body_block, jmp);
4190 ir_node *old_continue_label = continue_label;
4191 ir_node *old_break_label = break_label;
4192 continue_label = header_block;
4195 statement_to_firm(statement->body);
4196 ir_node *false_block = break_label;
4198 assert(continue_label == header_block);
4199 continue_label = old_continue_label;
4200 break_label = old_break_label;
4202 if (get_cur_block() != NULL) {
4203 ir_node *body_jmp = new_Jmp();
4204 add_immBlock_pred(header_block, body_jmp);
4205 mature_immBlock(header_block);
4208 if (false_block == NULL) {
4209 false_block = new_immBlock();
4212 /* create the condition */
4213 set_cur_block(header_block);
4215 create_condition_evaluation(statement->condition, body_block, false_block);
4216 mature_immBlock(body_block);
4217 mature_immBlock(header_block);
4218 if (false_block != NULL) {
4219 mature_immBlock(false_block);
4222 set_cur_block(false_block);
4225 static void for_statement_to_firm(for_statement_t *statement)
4227 ir_node *jmp = NULL;
4229 /* create declarations */
4230 declaration_t *declaration = statement->scope.declarations;
4231 for( ; declaration != NULL; declaration = declaration->next) {
4232 create_local_declaration(declaration);
4234 declaration = statement->scope.declarations;
4235 for( ; declaration != NULL; declaration = declaration->next) {
4236 initialize_local_declaration(declaration);
4239 if (get_cur_block() != NULL) {
4240 if (statement->initialisation != NULL) {
4241 expression_to_firm(statement->initialisation);
4248 /* create the step block */
4249 ir_node *const step_block = new_immBlock();
4250 if (statement->step != NULL) {
4251 expression_to_firm(statement->step);
4253 ir_node *const step_jmp = new_Jmp();
4255 /* create the header block */
4256 ir_node *const header_block = new_immBlock();
4258 add_immBlock_pred(header_block, jmp);
4260 add_immBlock_pred(header_block, step_jmp);
4262 /* the false block */
4263 ir_node *const false_block = new_immBlock();
4266 ir_node * body_block;
4267 if (statement->body != NULL) {
4268 ir_node *const old_continue_label = continue_label;
4269 ir_node *const old_break_label = break_label;
4270 continue_label = step_block;
4271 break_label = false_block;
4273 body_block = new_immBlock();
4274 statement_to_firm(statement->body);
4276 assert(continue_label == step_block);
4277 assert(break_label == false_block);
4278 continue_label = old_continue_label;
4279 break_label = old_break_label;
4281 if (get_cur_block() != NULL) {
4283 add_immBlock_pred(step_block, jmp);
4286 body_block = step_block;
4289 /* create the condition */
4290 set_cur_block(header_block);
4291 if (statement->condition != NULL) {
4292 create_condition_evaluation(statement->condition, body_block,
4295 keep_alive(header_block);
4297 add_immBlock_pred(body_block, jmp);
4300 mature_immBlock(body_block);
4301 mature_immBlock(false_block);
4302 mature_immBlock(step_block);
4303 mature_immBlock(header_block);
4304 mature_immBlock(false_block);
4306 set_cur_block(false_block);
4309 static void create_jump_statement(const statement_t *statement,
4310 ir_node *target_block)
4312 if (get_cur_block() == NULL)
4315 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4316 ir_node *jump = new_d_Jmp(dbgi);
4317 add_immBlock_pred(target_block, jump);
4319 set_cur_block(NULL);
4322 static ir_node *get_break_label(void)
4324 if (break_label == NULL) {
4325 ir_node *cur_block = get_cur_block();
4326 break_label = new_immBlock();
4327 set_cur_block(cur_block);
4332 static void switch_statement_to_firm(const switch_statement_t *statement)
4334 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4336 ir_node *expression = expression_to_firm(statement->expression);
4337 ir_node *cond = new_d_Cond(dbgi, expression);
4339 set_cur_block(NULL);
4341 ir_node *const old_switch_cond = current_switch_cond;
4342 ir_node *const old_break_label = break_label;
4343 const bool old_saw_default_label = saw_default_label;
4344 saw_default_label = false;
4345 current_switch_cond = cond;
4348 if (statement->body != NULL) {
4349 statement_to_firm(statement->body);
4352 if (get_cur_block() != NULL) {
4353 ir_node *jmp = new_Jmp();
4354 add_immBlock_pred(get_break_label(), jmp);
4357 if (!saw_default_label) {
4358 set_cur_block(get_nodes_block(cond));
4359 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4360 MAGIC_DEFAULT_PN_NUMBER);
4361 add_immBlock_pred(get_break_label(), proj);
4364 if (break_label != NULL) {
4365 mature_immBlock(break_label);
4367 set_cur_block(break_label);
4369 assert(current_switch_cond == cond);
4370 current_switch_cond = old_switch_cond;
4371 break_label = old_break_label;
4372 saw_default_label = old_saw_default_label;
4375 static void case_label_to_firm(const case_label_statement_t *statement)
4377 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4379 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4381 /* let's create a node and hope firm constant folding creates a Const
4384 ir_node *old_block = get_nodes_block(current_switch_cond);
4385 ir_node *block = new_immBlock();
4387 set_cur_block(old_block);
4388 if (statement->expression != NULL) {
4389 long start_pn = fold_constant(statement->expression);
4390 long end_pn = start_pn;
4391 if (statement->end_range != NULL) {
4392 end_pn = fold_constant(statement->end_range);
4394 assert(start_pn <= end_pn);
4395 /* create jumps for all cases in the given range */
4396 for (long pn = start_pn; pn <= end_pn; ++pn) {
4397 if (pn == MAGIC_DEFAULT_PN_NUMBER) {
4398 /* oops someone detected our cheating... */
4399 panic("magic default pn used");
4401 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4402 add_immBlock_pred(block, proj);
4405 saw_default_label = true;
4406 proj = new_d_defaultProj(dbgi, current_switch_cond,
4407 MAGIC_DEFAULT_PN_NUMBER);
4409 add_immBlock_pred(block, proj);
4412 if (fallthrough != NULL) {
4413 add_immBlock_pred(block, fallthrough);
4415 mature_immBlock(block);
4416 set_cur_block(block);
4418 if (statement->statement != NULL) {
4419 statement_to_firm(statement->statement);
4423 static ir_node *get_label_block(declaration_t *label)
4425 assert(label->namespc == NAMESPACE_LABEL);
4427 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4428 return label->v.block;
4430 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4432 ir_node *old_cur_block = get_cur_block();
4433 ir_node *block = new_immBlock();
4434 set_cur_block(old_cur_block);
4436 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4437 label->v.block = block;
4439 ARR_APP1(ir_node *, imature_blocks, block);
4444 static void label_to_firm(const label_statement_t *statement)
4446 ir_node *block = get_label_block(statement->label);
4448 if (get_cur_block() != NULL) {
4449 ir_node *jmp = new_Jmp();
4450 add_immBlock_pred(block, jmp);
4453 set_cur_block(block);
4456 if (statement->statement != NULL) {
4457 statement_to_firm(statement->statement);
4461 static void goto_to_firm(const goto_statement_t *statement)
4463 if (get_cur_block() == NULL)
4466 ir_node *block = get_label_block(statement->label);
4467 ir_node *jmp = new_Jmp();
4468 add_immBlock_pred(block, jmp);
4470 set_cur_block(NULL);
4473 static void asm_statement_to_firm(const asm_statement_t *statement)
4475 bool needs_memory = false;
4477 if (statement->is_volatile) {
4478 needs_memory = true;
4481 size_t n_clobbers = 0;
4482 asm_clobber_t *clobber = statement->clobbers;
4483 for( ; clobber != NULL; clobber = clobber->next) {
4484 const char *clobber_str = clobber->clobber.begin;
4486 if (!be_is_valid_clobber(clobber_str)) {
4487 errorf(&statement->base.source_position,
4488 "invalid clobber '%s' specified", clobber->clobber);
4492 if (strcmp(clobber_str, "memory") == 0) {
4493 needs_memory = true;
4497 ident *id = new_id_from_str(clobber_str);
4498 obstack_ptr_grow(&asm_obst, id);
4501 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4502 ident **clobbers = NULL;
4503 if (n_clobbers > 0) {
4504 clobbers = obstack_finish(&asm_obst);
4507 size_t n_inputs = 0;
4508 asm_argument_t *argument = statement->inputs;
4509 for ( ; argument != NULL; argument = argument->next)
4511 size_t n_outputs = 0;
4512 argument = statement->outputs;
4513 for ( ; argument != NULL; argument = argument->next)
4516 unsigned next_pos = 0;
4518 ir_node *ins[n_inputs + n_outputs + 1];
4521 ir_asm_constraint *tmp_in_constraints
4522 = xmalloc(n_outputs * sizeof(tmp_in_constraints[0]));
4524 const expression_t *out_exprs[n_outputs];
4525 ir_node *out_addrs[n_outputs];
4526 size_t out_size = 0;
4528 argument = statement->outputs;
4529 for ( ; argument != NULL; argument = argument->next) {
4530 const char *constraints = argument->constraints.begin;
4531 asm_constraint_flags_t asm_flags
4532 = be_parse_asm_constraints(constraints);
4534 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4535 errorf(&statement->base.source_position,
4536 "some constraints in '%s' are not supported", constraints);
4539 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4540 errorf(&statement->base.source_position,
4541 "some constraints in '%s' are invalid", constraints);
4544 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4545 errorf(&statement->base.source_position,
4546 "no write flag specified for output constraints '%s'",
4551 unsigned pos = next_pos++;
4552 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4553 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4554 expression_t *expr = argument->expression;
4555 ir_node *addr = expression_to_addr(expr);
4556 /* in+output, construct an artifical same_as constraint on the
4558 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4560 ir_node *value = get_value_from_lvalue(expr, addr);
4562 snprintf(buf, sizeof(buf), "%d", pos);
4564 ir_asm_constraint constraint;
4565 constraint.pos = pos;
4566 constraint.constraint = new_id_from_str(buf);
4567 constraint.mode = get_ir_mode(expr->base.type);
4568 tmp_in_constraints[in_size] = constraint;
4569 ins[in_size] = value;
4574 out_exprs[out_size] = expr;
4575 out_addrs[out_size] = addr;
4577 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4578 /* pure memory ops need no input (but we have to make sure we
4579 * attach to the memory) */
4580 assert(! (asm_flags &
4581 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4582 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4583 needs_memory = true;
4585 /* we need to attach the address to the inputs */
4586 expression_t *expr = argument->expression;
4588 ir_asm_constraint constraint;
4589 constraint.pos = pos;
4590 constraint.constraint = new_id_from_str(constraints);
4591 constraint.mode = NULL;
4592 tmp_in_constraints[in_size] = constraint;
4594 ins[in_size] = expression_to_addr(expr);
4598 errorf(&statement->base.source_position,
4599 "only modifiers but no place set in constraints '%s'",
4604 ir_asm_constraint constraint;
4605 constraint.pos = pos;
4606 constraint.constraint = new_id_from_str(constraints);
4607 constraint.mode = get_ir_mode(argument->expression->base.type);
4609 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4611 assert(obstack_object_size(&asm_obst)
4612 == out_size * sizeof(ir_asm_constraint));
4613 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4616 obstack_grow(&asm_obst, tmp_in_constraints,
4617 in_size * sizeof(tmp_in_constraints[0]));
4618 free(tmp_in_constraints);
4619 /* find and count input and output arguments */
4620 argument = statement->inputs;
4621 for( ; argument != NULL; argument = argument->next) {
4622 const char *constraints = argument->constraints.begin;
4623 asm_constraint_flags_t asm_flags
4624 = be_parse_asm_constraints(constraints);
4626 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4627 errorf(&statement->base.source_position,
4628 "some constraints in '%s' are not supported", constraints);
4631 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4632 errorf(&statement->base.source_position,
4633 "some constraints in '%s' are invalid", constraints);
4636 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4637 errorf(&statement->base.source_position,
4638 "write flag specified for input constraints '%s'",
4644 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4645 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4646 /* we can treat this as "normal" input */
4647 input = expression_to_firm(argument->expression);
4648 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4649 /* pure memory ops need no input (but we have to make sure we
4650 * attach to the memory) */
4651 assert(! (asm_flags &
4652 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4653 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4654 needs_memory = true;
4655 input = expression_to_addr(argument->expression);
4657 errorf(&statement->base.source_position,
4658 "only modifiers but no place set in constraints '%s'",
4663 ir_asm_constraint constraint;
4664 constraint.pos = next_pos++;
4665 constraint.constraint = new_id_from_str(constraints);
4666 constraint.mode = get_irn_mode(input);
4668 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4669 ins[in_size++] = input;
4673 ir_asm_constraint constraint;
4674 constraint.pos = next_pos++;
4675 constraint.constraint = new_id_from_str("");
4676 constraint.mode = mode_M;
4678 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4679 ins[in_size++] = get_store();
4682 assert(obstack_object_size(&asm_obst)
4683 == in_size * sizeof(ir_asm_constraint));
4684 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4686 /* create asm node */
4687 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4689 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4691 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4692 out_size, output_constraints,
4693 n_clobbers, clobbers, asm_text);
4695 if (statement->is_volatile) {
4696 set_irn_pinned(node, op_pin_state_pinned);
4698 set_irn_pinned(node, op_pin_state_floats);
4701 /* create output projs & connect them */
4703 for (i = 0; i < out_size; ++i) {
4704 const expression_t *out_expr = out_exprs[i];
4706 ir_mode *mode = get_ir_mode(out_expr->base.type);
4707 ir_node *proj = new_Proj(node, mode, pn);
4708 ir_node *addr = out_addrs[i];
4710 set_value_for_expression_addr(out_expr, proj, addr);
4713 ir_node *projm = new_Proj(node, mode_M, i);
4718 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4719 statement_to_firm(statement->try_statement);
4720 warningf(&statement->base.source_position, "structured exception handling ignored");
4723 static void leave_statement_to_firm(leave_statement_t *statement) {
4724 errorf(&statement->base.source_position, "__leave not supported yet");
4728 * Transform a statement.
4730 static void statement_to_firm(statement_t *statement)
4733 assert(!statement->base.transformed);
4734 statement->base.transformed = true;
4737 switch(statement->kind) {
4738 case STATEMENT_INVALID:
4739 panic("invalid statement found");
4741 case STATEMENT_EMPTY:
4744 case STATEMENT_COMPOUND:
4745 compound_statement_to_firm(&statement->compound);
4747 case STATEMENT_RETURN:
4748 return_statement_to_firm(&statement->returns);
4750 case STATEMENT_EXPRESSION:
4751 expression_statement_to_firm(&statement->expression);
4754 if_statement_to_firm(&statement->ifs);
4756 case STATEMENT_WHILE:
4757 while_statement_to_firm(&statement->whiles);
4759 case STATEMENT_DO_WHILE:
4760 do_while_statement_to_firm(&statement->do_while);
4762 case STATEMENT_DECLARATION:
4763 declaration_statement_to_firm(&statement->declaration);
4765 case STATEMENT_BREAK:
4766 create_jump_statement(statement, get_break_label());
4768 case STATEMENT_CONTINUE:
4769 create_jump_statement(statement, continue_label);
4771 case STATEMENT_SWITCH:
4772 switch_statement_to_firm(&statement->switchs);
4774 case STATEMENT_CASE_LABEL:
4775 case_label_to_firm(&statement->case_label);
4778 for_statement_to_firm(&statement->fors);
4780 case STATEMENT_LABEL:
4781 label_to_firm(&statement->label);
4783 case STATEMENT_GOTO:
4784 goto_to_firm(&statement->gotos);
4787 asm_statement_to_firm(&statement->asms);
4789 case STATEMENT_MS_TRY:
4790 ms_try_statement_to_firm(&statement->ms_try);
4792 case STATEMENT_LEAVE:
4793 leave_statement_to_firm(&statement->leave);
4796 panic("Statement not implemented\n");
4799 static int count_decls_in_expression(const expression_t *expression);
4801 static int count_local_declarations(const declaration_t * decl,
4802 const declaration_t *const end)
4805 for (; decl != end; decl = decl->next) {
4806 if (decl->namespc != NAMESPACE_NORMAL)
4808 const type_t *type = skip_typeref(decl->type);
4809 if (!decl->address_taken && is_type_scalar(type))
4811 const initializer_t *initializer = decl->init.initializer;
4812 /* FIXME: should walk initializer hierarchies... */
4813 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4814 count += count_decls_in_expression(initializer->value.value);
4820 static int count_decls_in_expression(const expression_t *expression) {
4823 if (expression == NULL)
4826 switch((expression_kind_t) expression->base.kind) {
4827 case EXPR_STATEMENT:
4828 return count_decls_in_stmts(expression->statement.statement);
4830 int count_left = count_decls_in_expression(expression->binary.left);
4831 int count_right = count_decls_in_expression(expression->binary.right);
4832 return count_left + count_right;
4835 return count_decls_in_expression(expression->unary.value);
4837 call_argument_t *argument = expression->call.arguments;
4838 for( ; argument != NULL; argument = argument->next) {
4839 count += count_decls_in_expression(argument->expression);
4846 panic("unexpected expression kind");
4848 case EXPR_COMPOUND_LITERAL:
4852 case EXPR_CONDITIONAL:
4853 count += count_decls_in_expression(expression->conditional.condition);
4854 count += count_decls_in_expression(expression->conditional.true_expression);
4855 count += count_decls_in_expression(expression->conditional.false_expression);
4858 case EXPR_BUILTIN_PREFETCH:
4859 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4860 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4861 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4864 case EXPR_BUILTIN_CONSTANT_P:
4865 count += count_decls_in_expression(expression->builtin_constant.value);
4869 count += count_decls_in_expression(expression->select.compound);
4872 case EXPR_ARRAY_ACCESS:
4873 count += count_decls_in_expression(expression->array_access.array_ref);
4874 count += count_decls_in_expression(expression->array_access.index);
4877 case EXPR_CLASSIFY_TYPE:
4878 count += count_decls_in_expression(expression->classify_type.type_expression);
4882 case EXPR_ALIGNOF: {
4883 expression_t *tp_expression = expression->typeprop.tp_expression;
4884 if (tp_expression != NULL) {
4885 count += count_decls_in_expression(tp_expression);
4891 case EXPR_REFERENCE:
4893 case EXPR_CHARACTER_CONSTANT:
4894 case EXPR_WIDE_CHARACTER_CONSTANT:
4895 case EXPR_STRING_LITERAL:
4896 case EXPR_WIDE_STRING_LITERAL:
4898 case EXPR_BUILTIN_SYMBOL:
4904 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4905 * (or implement all the missing expressions here/implement a walker)
4911 static int count_decls_in_stmts(const statement_t *stmt)
4914 for (; stmt != NULL; stmt = stmt->base.next) {
4915 switch (stmt->kind) {
4916 case STATEMENT_EMPTY:
4919 case STATEMENT_DECLARATION: {
4920 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4921 count += count_local_declarations(decl_stmt->declarations_begin,
4922 decl_stmt->declarations_end->next);
4926 case STATEMENT_COMPOUND: {
4927 const compound_statement_t *const comp =
4929 count += count_decls_in_stmts(comp->statements);
4933 case STATEMENT_IF: {
4934 const if_statement_t *const if_stmt = &stmt->ifs;
4935 count += count_decls_in_expression(if_stmt->condition);
4936 count += count_decls_in_stmts(if_stmt->true_statement);
4937 count += count_decls_in_stmts(if_stmt->false_statement);
4941 case STATEMENT_SWITCH: {
4942 const switch_statement_t *const switch_stmt = &stmt->switchs;
4943 count += count_decls_in_expression(switch_stmt->expression);
4944 count += count_decls_in_stmts(switch_stmt->body);
4948 case STATEMENT_LABEL: {
4949 const label_statement_t *const label_stmt = &stmt->label;
4950 if (label_stmt->statement != NULL) {
4951 count += count_decls_in_stmts(label_stmt->statement);
4956 case STATEMENT_WHILE: {
4957 const while_statement_t *const while_stmt = &stmt->whiles;
4958 count += count_decls_in_expression(while_stmt->condition);
4959 count += count_decls_in_stmts(while_stmt->body);
4963 case STATEMENT_DO_WHILE: {
4964 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4965 count += count_decls_in_expression(do_while_stmt->condition);
4966 count += count_decls_in_stmts(do_while_stmt->body);
4970 case STATEMENT_FOR: {
4971 const for_statement_t *const for_stmt = &stmt->fors;
4972 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4973 count += count_decls_in_expression(for_stmt->initialisation);
4974 count += count_decls_in_expression(for_stmt->condition);
4975 count += count_decls_in_expression(for_stmt->step);
4976 count += count_decls_in_stmts(for_stmt->body);
4980 case STATEMENT_CASE_LABEL: {
4981 const case_label_statement_t *label = &stmt->case_label;
4982 count += count_decls_in_expression(label->expression);
4983 if (label->statement != NULL) {
4984 count += count_decls_in_stmts(label->statement);
4990 case STATEMENT_BREAK:
4991 case STATEMENT_CONTINUE:
4994 case STATEMENT_EXPRESSION: {
4995 const expression_statement_t *expr_stmt = &stmt->expression;
4996 count += count_decls_in_expression(expr_stmt->expression);
5000 case STATEMENT_GOTO:
5001 case STATEMENT_LEAVE:
5002 case STATEMENT_INVALID:
5005 case STATEMENT_RETURN: {
5006 const return_statement_t *ret_stmt = &stmt->returns;
5007 count += count_decls_in_expression(ret_stmt->value);
5011 case STATEMENT_MS_TRY: {
5012 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5013 count += count_decls_in_stmts(try_stmt->try_statement);
5014 if (try_stmt->except_expression != NULL)
5015 count += count_decls_in_expression(try_stmt->except_expression);
5016 count += count_decls_in_stmts(try_stmt->final_statement);
5024 static int get_function_n_local_vars(declaration_t *declaration)
5028 /* count parameters */
5029 count += count_local_declarations(declaration->scope.declarations, NULL);
5031 /* count local variables declared in body */
5032 count += count_decls_in_stmts(declaration->init.statement);
5037 static void initialize_function_parameters(declaration_t *declaration)
5039 ir_graph *irg = current_ir_graph;
5040 ir_node *args = get_irg_args(irg);
5041 ir_node *start_block = get_irg_start_block(irg);
5042 ir_type *function_irtype = get_ir_type(declaration->type);
5045 declaration_t *parameter = declaration->scope.declarations;
5046 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5047 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5048 type_t *type = skip_typeref(parameter->type);
5050 bool needs_entity = parameter->address_taken;
5051 assert(!is_type_array(type));
5052 if (is_type_compound(type)) {
5053 needs_entity = true;
5057 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5058 ident *id = new_id_from_str(parameter->symbol->string);
5059 set_entity_ident(entity, id);
5061 parameter->declaration_kind
5062 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5063 parameter->v.entity = entity;
5067 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5068 ir_mode *param_mode = get_type_mode(param_irtype);
5071 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5073 ir_mode *mode = get_ir_mode(parameter->type);
5074 value = create_conv(NULL, value, mode);
5075 value = do_strict_conv(NULL, value);
5077 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5078 parameter->v.value_number = next_value_number_function;
5079 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5080 ++next_value_number_function;
5082 set_value(parameter->v.value_number, value);
5087 * Handle additional decl modifiers for IR-graphs
5089 * @param irg the IR-graph
5090 * @param dec_modifiers additional modifiers
5092 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5094 if (decl_modifiers & DM_NORETURN) {
5095 /* TRUE if the declaration includes the Microsoft
5096 __declspec(noreturn) specifier. */
5097 set_irg_additional_property(irg, mtp_property_noreturn);
5099 if (decl_modifiers & DM_NOTHROW) {
5100 /* TRUE if the declaration includes the Microsoft
5101 __declspec(nothrow) specifier. */
5102 set_irg_additional_property(irg, mtp_property_nothrow);
5104 if (decl_modifiers & DM_NAKED) {
5105 /* TRUE if the declaration includes the Microsoft
5106 __declspec(naked) specifier. */
5107 set_irg_additional_property(irg, mtp_property_naked);
5109 if (decl_modifiers & DM_FORCEINLINE) {
5110 /* TRUE if the declaration includes the
5111 Microsoft __forceinline specifier. */
5112 set_irg_inline_property(irg, irg_inline_forced);
5114 if (decl_modifiers & DM_NOINLINE) {
5115 /* TRUE if the declaration includes the Microsoft
5116 __declspec(noinline) specifier. */
5117 set_irg_inline_property(irg, irg_inline_forbidden);
5121 static void add_function_pointer(ir_type *segment, ir_entity *method,
5122 const char *unique_template)
5124 ir_type *method_type = get_entity_type(method);
5125 ident *id = id_unique(unique_template);
5126 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5128 ident *ide = id_unique(unique_template);
5129 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5130 ir_graph *irg = get_const_code_irg();
5131 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5134 set_entity_compiler_generated(ptr, 1);
5135 set_entity_variability(ptr, variability_constant);
5136 set_atomic_ent_value(ptr, val);
5140 * Create code for a function.
5142 static void create_function(declaration_t *declaration)
5144 ir_entity *function_entity = get_function_entity(declaration);
5146 if (declaration->init.statement == NULL)
5149 if (declaration->modifiers & DM_CONSTRUCTOR) {
5150 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5151 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5153 if (declaration->modifiers & DM_DESTRUCTOR) {
5154 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5155 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5158 current_function_decl = declaration;
5159 current_function_name = NULL;
5160 current_funcsig = NULL;
5162 assert(imature_blocks == NULL);
5163 imature_blocks = NEW_ARR_F(ir_node*, 0);
5165 int n_local_vars = get_function_n_local_vars(declaration);
5166 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5168 set_irg_fp_model(irg, firm_opt.fp_model);
5169 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5170 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5172 ir_node *first_block = get_cur_block();
5174 /* set inline flags */
5175 if (declaration->is_inline)
5176 set_irg_inline_property(irg, irg_inline_recomended);
5177 handle_decl_modifier_irg(irg, declaration->modifiers);
5179 next_value_number_function = 0;
5180 initialize_function_parameters(declaration);
5182 statement_to_firm(declaration->init.statement);
5184 ir_node *end_block = get_irg_end_block(irg);
5186 /* do we have a return statement yet? */
5187 if (get_cur_block() != NULL) {
5188 type_t *type = skip_typeref(declaration->type);
5189 assert(is_type_function(type));
5190 const function_type_t *func_type = &type->function;
5191 const type_t *return_type
5192 = skip_typeref(func_type->return_type);
5195 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5196 ret = new_Return(get_store(), 0, NULL);
5199 if (is_type_scalar(return_type)) {
5200 mode = get_ir_mode(func_type->return_type);
5206 /* ยง5.1.2.2.3 main implicitly returns 0 */
5207 if (strcmp(declaration->symbol->string, "main") == 0) {
5208 in[0] = new_Const(mode, get_mode_null(mode));
5210 in[0] = new_Unknown(mode);
5211 if (warning.return_type) {
5212 warningf(&declaration->source_position,
5213 "missing return statement at end of non-void function '%Y'",
5214 declaration->symbol);
5217 ret = new_Return(get_store(), 1, in);
5219 add_immBlock_pred(end_block, ret);
5222 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
5223 mature_immBlock(imature_blocks[i]);
5225 DEL_ARR_F(imature_blocks);
5226 imature_blocks = NULL;
5228 mature_immBlock(first_block);
5229 mature_immBlock(end_block);
5231 irg_finalize_cons(irg);
5233 /* finalize the frame type */
5234 ir_type *frame_type = get_irg_frame_type(irg);
5235 int n = get_compound_n_members(frame_type);
5238 for(int i = 0; i < n; ++i) {
5239 ir_entity *entity = get_compound_member(frame_type, i);
5240 ir_type *entity_type = get_entity_type(entity);
5242 int align = get_type_alignment_bytes(entity_type);
5243 if (align > align_all)
5247 misalign = offset % align;
5249 offset += align - misalign;
5253 set_entity_offset(entity, offset);
5254 offset += get_type_size_bytes(entity_type);
5256 set_type_size_bytes(frame_type, offset);
5257 set_type_alignment_bytes(frame_type, align_all);
5262 static void scope_to_firm(scope_t *scope)
5264 /* first pass: create declarations */
5265 declaration_t *declaration = scope->declarations;
5266 for( ; declaration != NULL; declaration = declaration->next) {
5267 if (declaration->namespc != NAMESPACE_NORMAL)
5269 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5270 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5272 if (declaration->symbol == NULL)
5275 type_t *type = skip_typeref(declaration->type);
5276 if (is_type_function(type)) {
5277 get_function_entity(declaration);
5279 create_global_variable(declaration);
5283 /* second pass: create code/initializers */
5284 declaration = scope->declarations;
5285 for( ; declaration != NULL; declaration = declaration->next) {
5286 if (declaration->namespc != NAMESPACE_NORMAL)
5288 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5289 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5291 if (declaration->symbol == NULL)
5294 type_t *type = declaration->type;
5295 if (type->kind == TYPE_FUNCTION) {
5296 create_function(declaration);
5298 assert(declaration->declaration_kind
5299 == DECLARATION_KIND_GLOBAL_VARIABLE);
5300 current_ir_graph = get_const_code_irg();
5301 create_declaration_initializer(declaration);
5306 void init_ast2firm(void)
5308 obstack_init(&asm_obst);
5309 init_atomic_modes();
5311 id_underscore = new_id_from_chars("_", 1);
5312 id_imp = new_id_from_chars("__imp_", 6);
5314 /* OS option must be set to the backend */
5315 const char *s = "ia32-gasmode=linux";
5316 switch (firm_opt.os_support) {
5317 case OS_SUPPORT_MINGW:
5318 create_ld_ident = create_ld_ident_win32;
5319 s = "ia32-gasmode=mingw";
5321 case OS_SUPPORT_LINUX:
5322 create_ld_ident = create_ld_ident_linux_elf;
5323 s = "ia32-gasmode=elf";
5325 case OS_SUPPORT_MACHO:
5326 create_ld_ident = create_ld_ident_macho;
5327 s = "ia32-gasmode=macho";
5330 int res = firm_be_option(s);
5334 /* create idents for all known runtime functions */
5335 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5336 rts_idents[i] = new_id_from_str(rts_data[i].name);
5339 entitymap_init(&entitymap);
5342 static void init_ir_types(void)
5344 static int ir_types_initialized = 0;
5345 if (ir_types_initialized)
5347 ir_types_initialized = 1;
5349 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5350 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5351 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5353 ir_type_int = get_ir_type(type_int);
5354 ir_type_const_char = get_ir_type(type_const_char);
5355 ir_type_wchar_t = get_ir_type(type_wchar_t);
5356 ir_type_void = get_ir_type(type_void);
5359 void exit_ast2firm(void)
5361 entitymap_destroy(&entitymap);
5362 obstack_free(&asm_obst, NULL);
5365 void translation_unit_to_firm(translation_unit_t *unit)
5367 /* just to be sure */
5368 continue_label = NULL;
5370 current_switch_cond = NULL;
5374 scope_to_firm(&unit->scope);