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 /* some idents needed for name mangling */
48 static ident *id_underscore;
51 static ir_type *ir_type_const_char;
52 static ir_type *ir_type_wchar_t;
53 static ir_type *ir_type_void;
54 static ir_type *ir_type_int;
56 static int next_value_number_function;
57 static ir_node *continue_label;
58 static ir_node *break_label;
59 static ir_node *current_switch_cond;
60 static bool saw_default_label;
61 static ir_node **imature_blocks;
62 static bool constant_folding;
64 static const declaration_t *current_function_decl;
65 static ir_node *current_function_name;
66 static ir_node *current_funcsig;
67 static switch_statement_t *current_switch;
69 static entitymap_t entitymap;
71 static struct obstack asm_obst;
73 typedef enum declaration_kind_t {
74 DECLARATION_KIND_UNKNOWN,
75 DECLARATION_KIND_FUNCTION,
76 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
77 DECLARATION_KIND_GLOBAL_VARIABLE,
78 DECLARATION_KIND_LOCAL_VARIABLE,
79 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
80 DECLARATION_KIND_COMPOUND_MEMBER,
81 DECLARATION_KIND_LABEL_BLOCK,
82 DECLARATION_KIND_ENUM_ENTRY,
83 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
84 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
88 static ir_type *get_ir_type(type_t *type);
89 static ir_type *get_ir_type_incomplete(type_t *type);
90 static int count_decls_in_stmts(const statement_t *stmt);
92 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
94 const declaration_t *declaration = get_irg_loc_description(irg, pos);
96 if (declaration != NULL) {
97 warningf(&declaration->source_position,
98 "variable '%#T' might be used uninitialized",
99 declaration->type, declaration->symbol);
101 return new_r_Unknown(irg, mode);
104 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
106 const source_position_t *pos = (const source_position_t*) dbg;
109 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
113 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
115 const source_position_t *pos = (const source_position_t*) dbg;
120 return pos->input_name;
123 static dbg_info *get_dbg_info(const source_position_t *pos)
125 return (dbg_info*) pos;
128 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
130 static ir_mode *mode_int, *mode_uint;
132 static ir_node *_expression_to_firm(const expression_t *expression);
133 static ir_node *expression_to_firm(const expression_t *expression);
134 static inline ir_mode *get_ir_mode(type_t *type);
135 static void create_local_declaration(declaration_t *declaration);
137 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
139 unsigned flags = get_atomic_type_flags(kind);
140 unsigned size = get_atomic_type_size(kind);
141 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
142 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
145 unsigned bit_size = size * 8;
146 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
147 ir_mode_arithmetic arithmetic;
148 unsigned modulo_shift;
150 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
151 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
152 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
153 sort = irms_int_number;
154 arithmetic = irma_twos_complement;
155 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
157 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
158 snprintf(name, sizeof(name), "f%d", bit_size);
159 sort = irms_float_number;
160 arithmetic = irma_ieee754;
163 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
171 * Initialises the atomic modes depending on the machine size.
173 static void init_atomic_modes(void)
175 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
176 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
178 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
179 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
181 /* there's no real void type in firm */
182 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
184 /* initialize pointer modes */
186 ir_mode_sort sort = irms_reference;
187 unsigned bit_size = machine_size;
189 ir_mode_arithmetic arithmetic = irma_twos_complement;
190 unsigned modulo_shift
191 = bit_size < machine_size ? machine_size : bit_size;
193 snprintf(name, sizeof(name), "p%d", machine_size);
194 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
197 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
198 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
200 /* Hmm, pointers should be machine size */
201 set_modeP_data(ptr_mode);
202 set_modeP_code(ptr_mode);
205 static unsigned get_compound_type_size(compound_type_t *type)
207 ir_type *irtype = get_ir_type((type_t*) type);
208 return get_type_size_bytes(irtype);
211 static unsigned get_array_type_size(array_type_t *type)
213 assert(!type->is_vla);
214 ir_type *irtype = get_ir_type((type_t*) type);
215 return get_type_size_bytes(irtype);
219 static unsigned get_type_size_const(type_t *type)
223 panic("error type occurred");
225 return get_atomic_type_size(type->atomic.akind);
227 return 2 * get_atomic_type_size(type->complex.akind);
229 return get_atomic_type_size(type->imaginary.akind);
231 return get_mode_size_bytes(mode_int);
232 case TYPE_COMPOUND_UNION:
233 case TYPE_COMPOUND_STRUCT:
234 return get_compound_type_size(&type->compound);
236 /* just a pointer to the function */
237 return get_mode_size_bytes(mode_P_code);
239 return get_mode_size_bytes(mode_P_data);
241 return get_array_type_size(&type->array);
243 return get_type_size_const(type->builtin.real_type);
245 panic("type size of bitfield request");
251 panic("Trying to determine size of invalid type");
254 static ir_node *get_type_size(type_t *type)
256 type = skip_typeref(type);
258 if (is_type_array(type) && type->array.is_vla) {
259 ir_node *size_node = type->array.size_node;
260 if (size_node == NULL) {
261 size_node = expression_to_firm(type->array.size_expression);
262 assert(!is_Const(size_node));
263 type->array.size_node = size_node;
266 ir_node *elem_size = get_type_size(type->array.element_type);
267 ir_mode *mode = get_irn_mode(size_node);
268 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
272 ir_mode *mode = get_ir_mode(type_size_t);
274 sym.type_p = get_ir_type(type);
275 return new_SymConst(mode, sym, symconst_type_size);
278 static unsigned count_parameters(const function_type_t *function_type)
282 function_parameter_t *parameter = function_type->parameters;
283 for ( ; parameter != NULL; parameter = parameter->next) {
291 * Creates a Firm type for an atomic type
293 static ir_type *create_atomic_type(const atomic_type_t *type)
295 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
296 atomic_type_kind_t kind = type->akind;
297 ir_mode *mode = _atomic_modes[kind];
298 ident *id = get_mode_ident(mode);
299 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
301 set_type_alignment_bytes(irtype, type->base.alignment);
307 * Creates a Firm type for a complex type
309 static ir_type *create_complex_type(const complex_type_t *type)
311 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
312 atomic_type_kind_t kind = type->akind;
313 ir_mode *mode = _atomic_modes[kind];
314 ident *id = get_mode_ident(mode);
319 /* FIXME: finish the array */
324 * Creates a Firm type for an imaginary type
326 static ir_type *create_imaginary_type(const imaginary_type_t *type)
328 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
329 atomic_type_kind_t kind = type->akind;
330 ir_mode *mode = _atomic_modes[kind];
331 ident *id = get_mode_ident(mode);
332 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
334 set_type_alignment_bytes(irtype, type->base.alignment);
340 * return type of a parameter (and take transparent union gnu extension into
343 static type_t *get_parameter_type(type_t *type)
345 type = skip_typeref(type);
346 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
347 declaration_t *decl = type->compound.declaration;
348 type = decl->scope.declarations->type;
354 static ir_type *create_method_type(const function_type_t *function_type)
356 type_t *return_type = function_type->return_type;
358 ident *id = id_unique("functiontype.%u");
359 int n_parameters = count_parameters(function_type);
360 int n_results = return_type == type_void ? 0 : 1;
361 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
362 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
364 if (return_type != type_void) {
365 ir_type *restype = get_ir_type(return_type);
366 set_method_res_type(irtype, 0, restype);
369 function_parameter_t *parameter = function_type->parameters;
371 for ( ; parameter != NULL; parameter = parameter->next) {
372 type_t *type = get_parameter_type(parameter->type);
373 ir_type *p_irtype = get_ir_type(type);
374 set_method_param_type(irtype, n, p_irtype);
378 if (function_type->variadic || function_type->unspecified_parameters) {
379 set_method_variadicity(irtype, variadicity_variadic);
382 unsigned cc = get_method_calling_convention(irtype);
383 switch (function_type->calling_convention) {
384 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
387 set_method_calling_convention(irtype, SET_CDECL(cc));
391 if (function_type->variadic || function_type->unspecified_parameters)
394 /* only non-variadic function can use stdcall, else use cdecl */
395 set_method_calling_convention(irtype, SET_STDCALL(cc));
399 if (function_type->variadic || function_type->unspecified_parameters)
401 /* only non-variadic function can use fastcall, else use cdecl */
402 set_method_calling_convention(irtype, SET_FASTCALL(cc));
406 /* Hmm, leave default, not accepted by the parser yet. */
407 warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet");
413 static ir_type *create_pointer_type(pointer_type_t *type)
415 type_t *points_to = type->points_to;
416 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
417 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
418 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
419 ir_points_to, mode_P_data, dbgi);
424 static ir_type *create_array_type(array_type_t *type)
426 type_t *element_type = type->element_type;
427 ir_type *ir_element_type = get_ir_type(element_type);
429 ident *id = id_unique("array.%u");
430 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
431 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
433 const int align = get_type_alignment_bytes(ir_element_type);
434 set_type_alignment_bytes(ir_type, align);
436 if (type->size_constant) {
437 int n_elements = type->size;
439 set_array_bounds_int(ir_type, 0, 0, n_elements);
441 size_t elemsize = get_type_size_bytes(ir_element_type);
442 if (elemsize % align > 0) {
443 elemsize += align - (elemsize % align);
445 set_type_size_bytes(ir_type, n_elements * elemsize);
447 set_array_lower_bound_int(ir_type, 0, 0);
449 set_type_state(ir_type, layout_fixed);
455 * Return the signed integer type of size bits.
457 * @param size the size
459 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
462 static ir_mode *s_modes[64 + 1] = {NULL, };
466 if (size <= 0 || size > 64)
469 mode = s_modes[size];
473 snprintf(name, sizeof(name), "bf_I%u", size);
474 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
475 size <= 32 ? 32 : size );
476 s_modes[size] = mode;
480 snprintf(name, sizeof(name), "I%u", size);
481 ident *id = new_id_from_str(name);
482 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
483 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
484 set_primitive_base_type(res, base_tp);
490 * Return the unsigned integer type of size bits.
492 * @param size the size
494 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
497 static ir_mode *u_modes[64 + 1] = {NULL, };
501 if (size <= 0 || size > 64)
504 mode = u_modes[size];
508 snprintf(name, sizeof(name), "bf_U%u", size);
509 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
510 size <= 32 ? 32 : size );
511 u_modes[size] = mode;
516 snprintf(name, sizeof(name), "U%u", size);
517 ident *id = new_id_from_str(name);
518 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
519 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
520 set_primitive_base_type(res, base_tp);
525 static ir_type *create_bitfield_type(bitfield_type_t *const type)
527 type_t *base = skip_typeref(type->base_type);
528 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
529 ir_type *irbase = get_ir_type(base);
531 unsigned size = fold_constant(type->size);
533 assert(!is_type_float(base));
534 if (is_type_signed(base)) {
535 return get_signed_int_type_for_bit_size(irbase, size);
537 return get_unsigned_int_type_for_bit_size(irbase, size);
541 #define INVALID_TYPE ((ir_type_ptr)-1)
544 COMPOUND_IS_STRUCT = false,
545 COMPOUND_IS_UNION = true
549 * Construct firm type from ast struct type.
551 * As anonymous inner structs get flattened to a single firm type, we might get
552 * irtype, outer_offset and out_align passed (they represent the position of
553 * the anonymous inner struct inside the resulting firm struct)
555 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
556 size_t *outer_offset, size_t *outer_align,
557 bool incomplete, bool is_union)
559 declaration_t *declaration = type->declaration;
560 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
562 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
563 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
565 return declaration->v.irtype;
567 size_t align_all = 1;
569 size_t bit_offset = 0;
572 if (irtype == NULL) {
573 symbol_t *symbol = declaration->symbol;
575 if (symbol != NULL) {
576 id = new_id_from_str(symbol->string);
579 id = id_unique("__anonymous_union.%u");
581 id = id_unique("__anonymous_struct.%u");
584 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
587 irtype = new_d_type_union(id, dbgi);
589 irtype = new_d_type_struct(id, dbgi);
592 declaration->declaration_kind
593 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
594 declaration->v.irtype = irtype;
595 //type->base.firm_type = irtype;
597 offset = *outer_offset;
598 align_all = *outer_align;
604 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
606 declaration_t *entry = declaration->scope.declarations;
607 for( ; entry != NULL; entry = entry->next) {
608 if (entry->namespc != NAMESPACE_NORMAL)
611 size_t prev_offset = offset;
613 symbol_t *symbol = entry->symbol;
614 type_t *entry_type = skip_typeref(entry->type);
615 dbg_info *dbgi = get_dbg_info(&entry->source_position);
618 if (symbol != NULL) {
619 ident = new_id_from_str(symbol->string);
621 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
622 create_compound_type(&entry_type->compound, irtype, &offset,
623 &align_all, false, COMPOUND_IS_STRUCT);
624 goto finished_member;
625 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
626 create_compound_type(&entry_type->compound, irtype, &offset,
627 &align_all, false, COMPOUND_IS_UNION);
628 goto finished_member;
630 assert(entry_type->kind == TYPE_BITFIELD);
632 ident = id_unique("anon.%u");
635 ir_type *base_irtype;
636 if (entry_type->kind == TYPE_BITFIELD) {
637 base_irtype = get_ir_type(entry_type->bitfield.base_type);
639 base_irtype = get_ir_type(entry_type);
642 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
643 size_t misalign = offset % entry_alignment;
645 ir_type *entry_irtype = get_ir_type(entry_type);
646 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
649 size_t bits_remainder;
650 if (entry_type->kind == TYPE_BITFIELD) {
651 size_t size_bits = fold_constant(entry_type->bitfield.size);
652 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
654 if (size_bits > rest_size_bits) {
655 /* start a new bucket */
656 offset += entry_alignment - misalign;
662 /* put into current bucket */
663 base = offset - misalign;
664 bits_remainder = misalign * 8 + bit_offset;
667 offset += size_bits / 8;
668 bit_offset = bit_offset + (size_bits % 8);
670 size_t entry_size = get_type_size_bytes(base_irtype);
671 if (misalign > 0 || bit_offset > 0)
672 offset += entry_alignment - misalign;
676 offset += entry_size;
680 if (entry_alignment > align_all) {
681 if (entry_alignment % align_all != 0) {
682 panic("uneven alignments not supported yet");
684 align_all = entry_alignment;
687 set_entity_offset(entity, base);
688 set_entity_offset_bits_remainder(entity,
689 (unsigned char) bits_remainder);
690 //add_struct_member(irtype, entity);
691 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
692 assert(entry->v.entity == NULL);
693 entry->v.entity = entity;
697 size_t entry_size = offset - prev_offset;
698 if (entry_size > size) {
710 size_t misalign = offset % align_all;
711 if (misalign > 0 || bit_offset > 0) {
712 size += align_all - misalign;
715 if (outer_offset != NULL) {
717 *outer_offset = offset;
719 *outer_offset += size;
722 if (align_all > *outer_align) {
723 if (align_all % *outer_align != 0) {
724 panic("uneven alignments not supported yet");
726 *outer_align = align_all;
729 set_type_alignment_bytes(irtype, align_all);
730 set_type_size_bytes(irtype, size);
731 set_type_state(irtype, layout_fixed);
737 static ir_type *create_enum_type(enum_type_t *const type)
739 type->base.firm_type = ir_type_int;
741 ir_mode *const mode = mode_int;
742 tarval *const one = get_mode_one(mode);
743 tarval * tv_next = get_tarval_null(mode);
745 bool constant_folding_old = constant_folding;
746 constant_folding = true;
748 declaration_t *declaration = type->declaration->next;
749 for (; declaration != NULL; declaration = declaration->next) {
750 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
753 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
755 expression_t *const init = declaration->init.enum_value;
757 ir_node *const cnst = expression_to_firm(init);
758 if (!is_Const(cnst)) {
759 panic("couldn't fold constant");
761 tv_next = get_Const_tarval(cnst);
763 declaration->v.enum_val = tv_next;
764 tv_next = tarval_add(tv_next, one);
767 constant_folding = constant_folding_old;
772 static ir_type *get_ir_type_incomplete(type_t *type)
774 assert(type != NULL);
775 type = skip_typeref(type);
777 if (type->base.firm_type != NULL) {
778 assert(type->base.firm_type != INVALID_TYPE);
779 return type->base.firm_type;
782 switch (type->kind) {
783 case TYPE_COMPOUND_STRUCT:
784 return create_compound_type(&type->compound, NULL, NULL, NULL,
785 true, COMPOUND_IS_STRUCT);
786 case TYPE_COMPOUND_UNION:
787 return create_compound_type(&type->compound, NULL, NULL, NULL,
788 true, COMPOUND_IS_UNION);
790 return get_ir_type(type);
794 static ir_type *get_ir_type(type_t *type)
796 assert(type != NULL);
798 type = skip_typeref(type);
800 if (type->base.firm_type != NULL) {
801 assert(type->base.firm_type != INVALID_TYPE);
802 return type->base.firm_type;
805 ir_type *firm_type = NULL;
806 switch (type->kind) {
808 panic("error type occurred");
810 firm_type = create_atomic_type(&type->atomic);
813 firm_type = create_complex_type(&type->complex);
816 firm_type = create_imaginary_type(&type->imaginary);
819 firm_type = create_method_type(&type->function);
822 firm_type = create_pointer_type(&type->pointer);
825 firm_type = create_array_type(&type->array);
827 case TYPE_COMPOUND_STRUCT:
828 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
829 false, COMPOUND_IS_STRUCT);
831 case TYPE_COMPOUND_UNION:
832 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
833 false, COMPOUND_IS_UNION);
836 firm_type = create_enum_type(&type->enumt);
839 firm_type = get_ir_type(type->builtin.real_type);
842 firm_type = create_bitfield_type(&type->bitfield);
850 if (firm_type == NULL)
851 panic("unknown type found");
853 type->base.firm_type = firm_type;
857 static inline ir_mode *get_ir_mode(type_t *type)
859 ir_type *irtype = get_ir_type(type);
861 /* firm doesn't report a mode for arrays somehow... */
862 if (is_Array_type(irtype)) {
866 ir_mode *mode = get_type_mode(irtype);
867 assert(mode != NULL);
871 /** Names of the runtime functions. */
872 static const struct {
873 int id; /**< the rts id */
874 int n_res; /**< number of return values */
875 const char *name; /**< the name of the rts function */
876 int n_params; /**< number of parameters */
877 unsigned flags; /**< language flags */
879 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
880 { rts_abort, 0, "abort", 0, _C89 },
881 { rts_alloca, 1, "alloca", 1, _ALL },
882 { rts_abs, 1, "abs", 1, _C89 },
883 { rts_labs, 1, "labs", 1, _C89 },
884 { rts_llabs, 1, "llabs", 1, _C99 },
885 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
887 { rts_fabs, 1, "fabs", 1, _C89 },
888 { rts_sqrt, 1, "sqrt", 1, _C89 },
889 { rts_cbrt, 1, "cbrt", 1, _C99 },
890 { rts_exp, 1, "exp", 1, _C89 },
891 { rts_exp2, 1, "exp2", 1, _C89 },
892 { rts_exp10, 1, "exp10", 1, _GNUC },
893 { rts_log, 1, "log", 1, _C89 },
894 { rts_log2, 1, "log2", 1, _C89 },
895 { rts_log10, 1, "log10", 1, _C89 },
896 { rts_pow, 1, "pow", 2, _C89 },
897 { rts_sin, 1, "sin", 1, _C89 },
898 { rts_cos, 1, "cos", 1, _C89 },
899 { rts_tan, 1, "tan", 1, _C89 },
900 { rts_asin, 1, "asin", 1, _C89 },
901 { rts_acos, 1, "acos", 1, _C89 },
902 { rts_atan, 1, "atan", 1, _C89 },
903 { rts_sinh, 1, "sinh", 1, _C89 },
904 { rts_cosh, 1, "cosh", 1, _C89 },
905 { rts_tanh, 1, "tanh", 1, _C89 },
907 { rts_fabsf, 1, "fabsf", 1, _C99 },
908 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
909 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
910 { rts_expf, 1, "expf", 1, _C99 },
911 { rts_exp2f, 1, "exp2f", 1, _C99 },
912 { rts_exp10f, 1, "exp10f", 1, _GNUC },
913 { rts_logf, 1, "logf", 1, _C99 },
914 { rts_log2f, 1, "log2f", 1, _C99 },
915 { rts_log10f, 1, "log10f", 1, _C99 },
916 { rts_powf, 1, "powf", 2, _C99 },
917 { rts_sinf, 1, "sinf", 1, _C99 },
918 { rts_cosf, 1, "cosf", 1, _C99 },
919 { rts_tanf, 1, "tanf", 1, _C99 },
920 { rts_asinf, 1, "asinf", 1, _C99 },
921 { rts_acosf, 1, "acosf", 1, _C99 },
922 { rts_atanf, 1, "atanf", 1, _C99 },
923 { rts_sinhf, 1, "sinhf", 1, _C99 },
924 { rts_coshf, 1, "coshf", 1, _C99 },
925 { rts_tanhf, 1, "tanhf", 1, _C99 },
927 { rts_fabsl, 1, "fabsl", 1, _C99 },
928 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
929 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
930 { rts_expl, 1, "expl", 1, _C99 },
931 { rts_exp2l, 1, "exp2l", 1, _C99 },
932 { rts_exp10l, 1, "exp10l", 1, _GNUC },
933 { rts_logl, 1, "logl", 1, _C99 },
934 { rts_log2l, 1, "log2l", 1, _C99 },
935 { rts_log10l, 1, "log10l", 1, _C99 },
936 { rts_powl, 1, "powl", 2, _C99 },
937 { rts_sinl, 1, "sinl", 1, _C99 },
938 { rts_cosl, 1, "cosl", 1, _C99 },
939 { rts_tanl, 1, "tanl", 1, _C99 },
940 { rts_asinl, 1, "asinl", 1, _C99 },
941 { rts_acosl, 1, "acosl", 1, _C99 },
942 { rts_atanl, 1, "atanl", 1, _C99 },
943 { rts_sinhl, 1, "sinhl", 1, _C99 },
944 { rts_coshl, 1, "coshl", 1, _C99 },
945 { rts_tanhl, 1, "tanhl", 1, _C99 },
947 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
948 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
949 { rts_strcmp, 1, "strcmp", 2, _C89 },
950 { rts_strncmp, 1, "strncmp", 3, _C89 }
953 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
956 * Mangles an entity linker (ld) name for win32 usage.
958 * @param ent the entity to be mangled
959 * @param declaration the declaration
961 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
965 if (is_Method_type(get_entity_type(ent)))
966 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
968 /* always add an underscore in win32 */
969 id = mangle(id_underscore, get_entity_ident(ent));
972 decl_modifiers_t decl_modifiers = declaration->modifiers;
973 if (decl_modifiers & DM_DLLIMPORT) {
974 /* add prefix for imported symbols */
975 id = mangle(id_imp, id);
981 * Mangles an entity linker (ld) name for Linux ELF usage.
983 * @param ent the entity to be mangled
984 * @param declaration the declaration
986 static ident *create_ld_ident_linux_elf(ir_entity *entity,
987 declaration_t *declaration)
990 return get_entity_ident(entity);
994 * Mangles an entity linker (ld) name for Mach-O usage.
996 * @param ent the entity to be mangled
997 * @param declaration the declaration
999 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
1002 ident *id = mangle(id_underscore, get_entity_ident(ent));
1006 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
1007 declaration_t *declaration);
1008 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1011 * Handle GNU attributes for entities
1013 * @param ent the entity
1014 * @param decl the routine declaration
1016 static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
1018 if (decl->modifiers & DM_PURE) {
1019 /* TRUE if the declaration includes the GNU
1020 __attribute__((pure)) specifier. */
1021 set_entity_additional_property(ent, mtp_property_pure);
1023 if (decl->modifiers & DM_USED) {
1024 /* TRUE if the declaration includes the GNU
1025 __attribute__((used)) specifier. */
1026 set_entity_stickyness(ent, stickyness_sticky);
1031 * Creates an entity representing a function.
1033 * @param declaration the function declaration
1035 static ir_entity *get_function_entity(declaration_t *declaration)
1037 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
1038 return declaration->v.entity;
1039 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
1041 symbol_t *symbol = declaration->symbol;
1042 ident *id = new_id_from_str(symbol->string);
1044 ir_type *global_type = get_glob_type();
1045 ir_type *ir_type_method = get_ir_type(declaration->type);
1046 assert(is_Method_type(ir_type_method));
1048 /* already an entity defined? */
1049 ir_entity *entity = entitymap_get(&entitymap, symbol);
1050 if (entity != NULL) {
1051 if (get_entity_visibility(entity) == visibility_external_allocated
1052 && declaration->init.statement != NULL) {
1053 set_entity_visibility(entity, visibility_external_visible);
1055 goto entity_created;
1058 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1059 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1060 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1062 handle_gnu_attributes_ent(entity, declaration);
1064 /* static inline => local
1065 * extern inline => local
1066 * inline without definition => local
1067 * inline with definition => external_visible */
1068 storage_class_tag_t const storage_class = (storage_class_tag_t)declaration->storage_class;
1069 bool const is_inline = declaration->is_inline;
1070 bool const has_body = declaration->init.statement != NULL;
1071 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1072 set_entity_visibility(entity, visibility_external_visible);
1073 } else if (storage_class == STORAGE_CLASS_STATIC ||
1074 (is_inline && has_body)) {
1076 /* this entity was declared, but is defined nowhere */
1077 set_entity_peculiarity(entity, peculiarity_description);
1079 set_entity_visibility(entity, visibility_local);
1080 } else if (has_body) {
1081 set_entity_visibility(entity, visibility_external_visible);
1083 set_entity_visibility(entity, visibility_external_allocated);
1085 set_entity_allocation(entity, allocation_static);
1087 /* We should check for file scope here, but as long as we compile C only
1088 this is not needed. */
1089 if (! firm_opt.freestanding) {
1090 /* check for a known runtime function */
1091 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1092 if (id != rts_idents[i])
1095 /* ignore those rts functions not necessary needed for current mode */
1096 if ((c_mode & rts_data[i].flags) == 0)
1098 assert(rts_entities[rts_data[i].id] == NULL);
1099 rts_entities[rts_data[i].id] = entity;
1103 entitymap_insert(&entitymap, symbol, entity);
1106 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1107 declaration->v.entity = entity;
1113 * Creates a Const node representing a constant.
1115 static ir_node *const_to_firm(const const_expression_t *cnst)
1117 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1118 ir_mode *mode = get_ir_mode(cnst->base.type);
1123 if (mode_is_float(mode)) {
1124 tv = new_tarval_from_double(cnst->v.float_value, mode);
1126 if (mode_is_signed(mode)) {
1127 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1129 len = snprintf(buf, sizeof(buf), "%llu",
1130 (unsigned long long) cnst->v.int_value);
1132 tv = new_tarval_from_str(buf, len, mode);
1135 return new_d_Const(dbgi, mode, tv);
1139 * Creates a Const node representing a character constant.
1141 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1143 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1144 ir_mode *mode = get_ir_mode(cnst->base.type);
1146 long long int v = 0;
1147 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1148 if (char_is_signed) {
1149 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1151 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1155 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1156 tarval *tv = new_tarval_from_str(buf, len, mode);
1158 return new_d_Const(dbgi, mode, tv);
1162 * Creates a Const node representing a wide character constant.
1164 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1166 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1167 ir_mode *mode = get_ir_mode(cnst->base.type);
1169 long long int v = cnst->v.wide_character.begin[0];
1172 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1173 tarval *tv = new_tarval_from_str(buf, len, mode);
1175 return new_d_Const(dbgi, mode, tv);
1179 * Creates a SymConst for a given entity.
1181 * @param dbgi debug info
1182 * @param mode the (reference) mode for the SymConst
1183 * @param entity the entity
1185 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1188 assert(entity != NULL);
1189 union symconst_symbol sym;
1190 sym.entity_p = entity;
1191 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1195 * Creates a SymConst node representing a string constant.
1197 * @param src_pos the source position of the string constant
1198 * @param id_prefix a prefix for the name of the generated string constant
1199 * @param value the value of the string constant
1201 static ir_node *string_to_firm(const source_position_t *const src_pos,
1202 const char *const id_prefix,
1203 const string_t *const value)
1205 ir_type *const global_type = get_glob_type();
1206 dbg_info *const dbgi = get_dbg_info(src_pos);
1207 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1208 ir_type_const_char, dbgi);
1210 ident *const id = id_unique(id_prefix);
1211 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1212 set_entity_ld_ident(entity, id);
1213 set_entity_variability(entity, variability_constant);
1214 set_entity_allocation(entity, allocation_static);
1216 ir_type *const elem_type = ir_type_const_char;
1217 ir_mode *const mode = get_type_mode(elem_type);
1219 const char* const string = value->begin;
1220 const size_t slen = value->size;
1222 set_array_lower_bound_int(type, 0, 0);
1223 set_array_upper_bound_int(type, 0, slen);
1224 set_type_size_bytes(type, slen);
1225 set_type_state(type, layout_fixed);
1227 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1228 for(size_t i = 0; i < slen; ++i) {
1229 tvs[i] = new_tarval_from_long(string[i], mode);
1232 set_array_entity_values(entity, tvs, slen);
1235 return create_symconst(dbgi, mode_P_data, entity);
1239 * Creates a SymConst node representing a string literal.
1241 * @param literal the string literal
1243 static ir_node *string_literal_to_firm(
1244 const string_literal_expression_t* literal)
1246 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1251 * Creates a SymConst node representing a wide string literal.
1253 * @param literal the wide string literal
1255 static ir_node *wide_string_literal_to_firm(
1256 const wide_string_literal_expression_t* const literal)
1258 ir_type *const global_type = get_glob_type();
1259 ir_type *const elem_type = ir_type_wchar_t;
1260 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1261 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1264 ident *const id = id_unique("Lstr.%u");
1265 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1266 set_entity_ld_ident(entity, id);
1267 set_entity_variability(entity, variability_constant);
1268 set_entity_allocation(entity, allocation_static);
1270 ir_mode *const mode = get_type_mode(elem_type);
1272 const wchar_rep_t *const string = literal->value.begin;
1273 const size_t slen = literal->value.size;
1275 set_array_lower_bound_int(type, 0, 0);
1276 set_array_upper_bound_int(type, 0, slen);
1277 set_type_size_bytes(type, slen);
1278 set_type_state(type, layout_fixed);
1280 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1281 for(size_t i = 0; i < slen; ++i) {
1282 tvs[i] = new_tarval_from_long(string[i], mode);
1285 set_array_entity_values(entity, tvs, slen);
1288 return create_symconst(dbgi, mode_P_data, entity);
1291 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1292 ir_node *const addr)
1294 ir_type *irtype = get_ir_type(type);
1295 if (is_compound_type(irtype)
1296 || is_Method_type(irtype)
1297 || is_Array_type(irtype)) {
1301 ir_mode *const mode = get_type_mode(irtype);
1302 ir_node *const memory = get_store();
1303 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1304 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1305 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1307 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1308 set_Load_volatility(load, volatility_is_volatile);
1311 set_store(load_mem);
1316 * Creates a strict Conv if neccessary.
1318 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1320 ir_mode *mode = get_irn_mode(node);
1322 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1324 if (!mode_is_float(mode))
1327 /* check if there is already a Conv */
1328 if (is_Conv(node)) {
1329 /* convert it into a strict Conv */
1330 set_Conv_strict(node, 1);
1334 /* otherwise create a new one */
1335 return new_d_strictConv(dbgi, node, mode);
1338 static ir_node *get_global_var_address(dbg_info *const dbgi,
1339 const declaration_t *const decl)
1341 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1343 ir_entity *const entity = decl->v.entity;
1344 switch ((storage_class_tag_t)decl->storage_class) {
1345 case STORAGE_CLASS_THREAD:
1346 case STORAGE_CLASS_THREAD_EXTERN:
1347 case STORAGE_CLASS_THREAD_STATIC: {
1348 ir_node *const no_mem = new_NoMem();
1349 ir_node *const tls = get_irg_tls(current_ir_graph);
1350 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1354 return create_symconst(dbgi, mode_P_data, entity);
1359 * Returns the correct base address depending on whether it is a parameter or a
1360 * normal local variable.
1362 static ir_node *get_local_frame(ir_entity *const ent)
1364 ir_graph *const irg = current_ir_graph;
1365 const ir_type *const owner = get_entity_owner(ent);
1366 if (owner == get_irg_frame_type(irg)) {
1367 return get_irg_frame(irg);
1369 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1370 return get_irg_value_param_base(irg);
1374 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1376 ir_mode *value_mode = get_irn_mode(value);
1378 if (value_mode == dest_mode || is_Bad(value))
1381 if (dest_mode == mode_b) {
1382 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1383 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1384 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1388 return new_d_Conv(dbgi, value, dest_mode);
1391 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1393 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1394 declaration_t *declaration = ref->declaration;
1395 type_t *type = skip_typeref(declaration->type);
1397 /* make sure the type is constructed */
1398 (void) get_ir_type(type);
1400 switch((declaration_kind_t) declaration->declaration_kind) {
1401 case DECLARATION_KIND_TYPE:
1402 case DECLARATION_KIND_UNKNOWN:
1405 case DECLARATION_KIND_ENUM_ENTRY: {
1406 ir_mode *const mode = get_ir_mode(type);
1407 return new_Const(mode, declaration->v.enum_val);
1410 case DECLARATION_KIND_LOCAL_VARIABLE: {
1411 ir_mode *const mode = get_ir_mode(type);
1412 return get_value(declaration->v.value_number, mode);
1414 case DECLARATION_KIND_FUNCTION: {
1415 ir_mode *const mode = get_ir_mode(type);
1416 return create_symconst(dbgi, mode, declaration->v.entity);
1418 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1419 ir_node *const addr = get_global_var_address(dbgi, declaration);
1420 return deref_address(dbgi, declaration->type, addr);
1423 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1424 ir_entity *entity = declaration->v.entity;
1425 ir_node *frame = get_local_frame(entity);
1426 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1427 return deref_address(dbgi, declaration->type, sel);
1430 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1431 return declaration->v.vla_base;
1433 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1434 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1435 case DECLARATION_KIND_COMPOUND_MEMBER:
1436 case DECLARATION_KIND_LABEL_BLOCK:
1437 panic("not implemented reference type");
1440 panic("reference to declaration with unknown type found");
1443 static ir_node *reference_addr(const reference_expression_t *ref)
1445 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1446 declaration_t *declaration = ref->declaration;
1448 switch((declaration_kind_t) declaration->declaration_kind) {
1449 case DECLARATION_KIND_TYPE:
1450 case DECLARATION_KIND_UNKNOWN:
1452 case DECLARATION_KIND_LOCAL_VARIABLE:
1453 /* you can store to a local variable (so we don't panic but return NULL
1454 * as an indicator for no real address) */
1456 case DECLARATION_KIND_FUNCTION: {
1457 type_t *const type = skip_typeref(ref->base.type);
1458 ir_mode *const mode = get_ir_mode(type);
1459 return create_symconst(dbgi, mode, declaration->v.entity);
1461 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1462 ir_node *const addr = get_global_var_address(dbgi, declaration);
1465 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1466 ir_entity *entity = declaration->v.entity;
1467 ir_node *frame = get_local_frame(entity);
1468 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1473 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1474 return declaration->v.vla_base;
1476 case DECLARATION_KIND_ENUM_ENTRY:
1477 panic("trying to reference enum entry");
1479 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1480 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1481 case DECLARATION_KIND_COMPOUND_MEMBER:
1482 case DECLARATION_KIND_LABEL_BLOCK:
1483 panic("not implemented reference type");
1486 panic("reference to declaration with unknown type found");
1490 * Transform calls to builtin functions.
1492 static ir_node *process_builtin_call(const call_expression_t *call)
1494 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1496 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1497 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1499 type_t *type = skip_typeref(builtin->base.type);
1500 assert(is_type_pointer(type));
1502 type_t *function_type = skip_typeref(type->pointer.points_to);
1503 symbol_t *symbol = builtin->symbol;
1505 switch(symbol->ID) {
1506 case T___builtin_alloca: {
1507 if (call->arguments == NULL || call->arguments->next != NULL) {
1508 panic("invalid number of parameters on __builtin_alloca");
1510 expression_t *argument = call->arguments->expression;
1511 ir_node *size = expression_to_firm(argument);
1513 ir_node *store = get_store();
1514 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1516 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1518 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1522 case T___builtin_huge_val: {
1523 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1524 tarval *tv = get_mode_infinite(mode);
1525 ir_node *res = new_d_Const(dbgi, mode, tv);
1528 case T___builtin_nan:
1529 case T___builtin_nanf:
1530 case T___builtin_nand: {
1531 /* Ignore string for now... */
1532 assert(is_type_function(function_type));
1533 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1534 tarval *tv = get_mode_NAN(mode);
1535 ir_node *res = new_d_Const(dbgi, mode, tv);
1538 case T___builtin_va_end:
1541 panic("Unsupported builtin found\n");
1546 * Transform a call expression.
1547 * Handles some special cases, like alloca() calls, which must be resolved
1548 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1549 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1552 static ir_node *call_expression_to_firm(const call_expression_t *call)
1554 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1555 assert(get_cur_block() != NULL);
1557 expression_t *function = call->function;
1558 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1559 return process_builtin_call(call);
1561 if (function->kind == EXPR_REFERENCE) {
1562 const reference_expression_t *ref = &function->reference;
1563 declaration_t *declaration = ref->declaration;
1565 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1566 if (declaration->v.entity == rts_entities[rts_alloca]) {
1567 /* handle alloca() call */
1568 expression_t *argument = call->arguments->expression;
1569 ir_node *size = expression_to_firm(argument);
1571 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1573 ir_node *store = get_store();
1574 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1575 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1577 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1579 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1585 ir_node *callee = expression_to_firm(function);
1587 type_t *type = skip_typeref(function->base.type);
1588 assert(is_type_pointer(type));
1589 pointer_type_t *pointer_type = &type->pointer;
1590 type_t *points_to = skip_typeref(pointer_type->points_to);
1591 assert(is_type_function(points_to));
1592 function_type_t *function_type = &points_to->function;
1594 int n_parameters = 0;
1595 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1596 ir_type *new_method_type = NULL;
1597 if (function_type->variadic || function_type->unspecified_parameters) {
1598 const call_argument_t *argument = call->arguments;
1599 for( ; argument != NULL; argument = argument->next) {
1603 /* we need to construct a new method type matching the call
1605 int n_res = get_method_n_ress(ir_method_type);
1606 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1607 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1608 n_parameters, n_res, dbgi);
1609 set_method_calling_convention(new_method_type,
1610 get_method_calling_convention(ir_method_type));
1611 set_method_additional_properties(new_method_type,
1612 get_method_additional_properties(ir_method_type));
1613 set_method_variadicity(new_method_type,
1614 get_method_variadicity(ir_method_type));
1616 for(int i = 0; i < n_res; ++i) {
1617 set_method_res_type(new_method_type, i,
1618 get_method_res_type(ir_method_type, i));
1620 argument = call->arguments;
1621 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1622 expression_t *expression = argument->expression;
1623 ir_type *irtype = get_ir_type(expression->base.type);
1624 set_method_param_type(new_method_type, i, irtype);
1626 ir_method_type = new_method_type;
1628 n_parameters = get_method_n_params(ir_method_type);
1631 ir_node *in[n_parameters];
1633 const call_argument_t *argument = call->arguments;
1634 for(int n = 0; n < n_parameters; ++n) {
1635 expression_t *expression = argument->expression;
1636 ir_node *arg_node = expression_to_firm(expression);
1638 arg_node = do_strict_conv(dbgi, arg_node);
1642 argument = argument->next;
1645 ir_node *store = get_store();
1646 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1648 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1651 type_t *return_type = skip_typeref(function_type->return_type);
1652 ir_node *result = NULL;
1654 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1656 if (is_type_scalar(return_type)) {
1657 mode = get_ir_mode(return_type);
1661 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1662 result = new_d_Proj(dbgi, resproj, mode, 0);
1668 static void statement_to_firm(statement_t *statement);
1669 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1671 static ir_node *expression_to_addr(const expression_t *expression);
1672 static ir_node *create_condition_evaluation(const expression_t *expression,
1673 ir_node *true_block,
1674 ir_node *false_block);
1676 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1679 value = do_strict_conv(dbgi, value);
1681 ir_node *memory = get_store();
1683 if (is_type_scalar(type)) {
1684 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1685 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1686 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1687 set_Store_volatility(store, volatility_is_volatile);
1688 set_store(store_mem);
1690 ir_type *irtype = get_ir_type(type);
1691 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1692 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1693 set_store(copyb_mem);
1697 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1699 tarval *all_one = get_mode_all_one(mode);
1700 int mode_size = get_mode_size_bits(mode);
1702 assert(offset >= 0);
1704 assert(offset + size <= mode_size);
1705 if (size == mode_size) {
1709 long shiftr = get_mode_size_bits(mode) - size;
1710 long shiftl = offset;
1711 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1712 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1713 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1714 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1719 static void bitfield_store_to_firm(const select_expression_t *expression,
1720 ir_node *addr, ir_node *value)
1722 type_t *type = expression->base.type;
1723 ir_mode *mode = get_ir_mode(type);
1725 assert(get_irn_mode(value) == mode || is_Bad(value));
1727 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1729 /* kill upper bits of value and shift to right position */
1730 ir_entity *entity = expression->compound_entry->v.entity;
1731 int bitoffset = get_entity_offset_bits_remainder(entity);
1732 ir_type *entity_type = get_entity_type(entity);
1733 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1735 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1736 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1737 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1738 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1739 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1740 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1742 /* load current value */
1743 ir_node *mem = get_store();
1744 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1745 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1746 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1747 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1748 tarval *inv_mask = tarval_not(shift_mask);
1749 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1750 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1752 /* construct new value and store */
1753 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1754 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1755 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1756 set_store(store_mem);
1758 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1759 set_Load_volatility(load, volatility_is_volatile);
1760 set_Store_volatility(store, volatility_is_volatile);
1764 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1767 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1768 type_t *type = expression->base.type;
1769 ir_mode *mode = get_ir_mode(type);
1770 ir_node *mem = get_store();
1771 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1772 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1773 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1775 load_res = create_conv(dbgi, load_res, mode_int);
1777 set_store(load_mem);
1779 /* kill upper bits */
1780 ir_entity *entity = expression->compound_entry->v.entity;
1781 int bitoffset = get_entity_offset_bits_remainder(entity);
1782 ir_type *entity_type = get_entity_type(entity);
1783 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1784 long shift_bitsl = machine_size - bitoffset - bitsize;
1785 assert(shift_bitsl >= 0);
1786 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1787 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1788 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1790 long shift_bitsr = bitoffset + shift_bitsl;
1791 assert(shift_bitsr <= (long) machine_size);
1792 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1793 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1795 if (mode_is_signed(mode)) {
1796 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1798 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1801 return create_conv(dbgi, shiftr, mode);
1804 static void set_value_for_expression_addr(const expression_t *expression,
1805 ir_node *value, ir_node *addr)
1807 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1808 value = do_strict_conv(dbgi, value);
1810 if (expression->kind == EXPR_REFERENCE) {
1811 const reference_expression_t *ref = &expression->reference;
1813 declaration_t *declaration = ref->declaration;
1814 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1815 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1816 set_value(declaration->v.value_number, value);
1822 addr = expression_to_addr(expression);
1824 type_t *type = skip_typeref(expression->base.type);
1826 if (expression->kind == EXPR_SELECT) {
1827 const select_expression_t *select = &expression->select;
1829 declaration_t *declaration = select->compound_entry;
1830 if (declaration->type->kind == TYPE_BITFIELD) {
1831 bitfield_store_to_firm(select, addr, value);
1836 assign_value(dbgi, addr, type, value);
1839 static void set_value_for_expression(const expression_t *expression,
1842 set_value_for_expression_addr(expression, value, NULL);
1845 static ir_node *get_value_from_lvalue(const expression_t *expression,
1848 if (expression->kind == EXPR_REFERENCE) {
1849 const reference_expression_t *ref = &expression->reference;
1851 declaration_t *declaration = ref->declaration;
1852 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1853 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1854 assert(addr == NULL);
1855 ir_mode *mode = get_ir_mode(expression->base.type);
1856 return get_value(declaration->v.value_number, mode);
1860 assert(addr != NULL);
1861 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1864 if (expression->kind == EXPR_SELECT &&
1865 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1866 value = bitfield_extract_to_firm(&expression->select, addr);
1868 value = deref_address(dbgi, expression->base.type, addr);
1875 static ir_node *create_incdec(const unary_expression_t *expression)
1877 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1878 const expression_t *value_expr = expression->value;
1879 ir_node *addr = expression_to_addr(value_expr);
1880 ir_node *value = get_value_from_lvalue(value_expr, addr);
1882 type_t *type = skip_typeref(expression->base.type);
1883 ir_mode *mode = get_ir_mode(expression->base.type);
1886 if (is_type_pointer(type)) {
1887 pointer_type_t *pointer_type = &type->pointer;
1888 offset = get_type_size(pointer_type->points_to);
1890 assert(is_type_arithmetic(type));
1891 offset = new_Const(mode, get_mode_one(mode));
1895 ir_node *store_value;
1896 switch(expression->base.kind) {
1897 case EXPR_UNARY_POSTFIX_INCREMENT:
1899 store_value = new_d_Add(dbgi, value, offset, mode);
1901 case EXPR_UNARY_POSTFIX_DECREMENT:
1903 store_value = new_d_Sub(dbgi, value, offset, mode);
1905 case EXPR_UNARY_PREFIX_INCREMENT:
1906 result = new_d_Add(dbgi, value, offset, mode);
1907 store_value = result;
1909 case EXPR_UNARY_PREFIX_DECREMENT:
1910 result = new_d_Sub(dbgi, value, offset, mode);
1911 store_value = result;
1914 panic("no incdec expr in create_incdec");
1917 set_value_for_expression_addr(value_expr, store_value, addr);
1922 static bool is_local_variable(expression_t *expression)
1924 if (expression->kind != EXPR_REFERENCE)
1926 reference_expression_t *ref_expr = &expression->reference;
1927 declaration_t *declaration = ref_expr->declaration;
1928 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1931 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1934 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1935 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1936 case EXPR_BINARY_NOTEQUAL:
1937 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1938 case EXPR_BINARY_ISLESS:
1939 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1940 case EXPR_BINARY_ISLESSEQUAL:
1941 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1942 case EXPR_BINARY_ISGREATER:
1943 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1944 case EXPR_BINARY_ISGREATEREQUAL:
1945 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1946 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1951 panic("trying to get pn_Cmp from non-comparison binexpr type");
1955 * Handle the assume optimizer hint: check if a Confirm
1956 * node can be created.
1958 * @param dbi debug info
1959 * @param expr the IL assume expression
1961 * we support here only some simple cases:
1966 static ir_node *handle_assume_compare(dbg_info *dbi,
1967 const binary_expression_t *expression)
1969 expression_t *op1 = expression->left;
1970 expression_t *op2 = expression->right;
1971 declaration_t *var2, *var = NULL;
1972 ir_node *res = NULL;
1975 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1977 if (is_local_variable(op1) && is_local_variable(op2)) {
1978 var = op1->reference.declaration;
1979 var2 = op2->reference.declaration;
1981 type_t *const type = skip_typeref(var->type);
1982 ir_mode *const mode = get_ir_mode(type);
1984 ir_node *const irn1 = get_value(var->v.value_number, mode);
1985 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1987 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1988 set_value(var2->v.value_number, res);
1990 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1991 set_value(var->v.value_number, res);
1997 if (is_local_variable(op1) && is_constant_expression(op2)) {
1998 var = op1->reference.declaration;
2000 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2001 cmp_val = get_inversed_pnc(cmp_val);
2002 var = op2->reference.declaration;
2007 type_t *const type = skip_typeref(var->type);
2008 ir_mode *const mode = get_ir_mode(type);
2010 res = get_value(var->v.value_number, mode);
2011 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2012 set_value(var->v.value_number, res);
2018 * Handle the assume optimizer hint.
2020 * @param dbi debug info
2021 * @param expr the IL assume expression
2023 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2024 switch(expression->kind) {
2025 case EXPR_BINARY_EQUAL:
2026 case EXPR_BINARY_NOTEQUAL:
2027 case EXPR_BINARY_LESS:
2028 case EXPR_BINARY_LESSEQUAL:
2029 case EXPR_BINARY_GREATER:
2030 case EXPR_BINARY_GREATEREQUAL:
2031 return handle_assume_compare(dbi, &expression->binary);
2037 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2039 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2040 type_t *type = skip_typeref(expression->base.type);
2042 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2043 return expression_to_addr(expression->value);
2045 const expression_t *value = expression->value;
2047 switch(expression->base.kind) {
2048 case EXPR_UNARY_NEGATE: {
2049 ir_node *value_node = expression_to_firm(value);
2050 ir_mode *mode = get_ir_mode(type);
2051 return new_d_Minus(dbgi, value_node, mode);
2053 case EXPR_UNARY_PLUS:
2054 return expression_to_firm(value);
2055 case EXPR_UNARY_BITWISE_NEGATE: {
2056 ir_node *value_node = expression_to_firm(value);
2057 ir_mode *mode = get_ir_mode(type);
2058 return new_d_Not(dbgi, value_node, mode);
2060 case EXPR_UNARY_NOT: {
2061 ir_node *value_node = _expression_to_firm(value);
2062 value_node = create_conv(dbgi, value_node, mode_b);
2063 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2066 case EXPR_UNARY_DEREFERENCE: {
2067 ir_node *value_node = expression_to_firm(value);
2068 type_t *value_type = skip_typeref(value->base.type);
2069 assert(is_type_pointer(value_type));
2070 type_t *points_to = value_type->pointer.points_to;
2071 return deref_address(dbgi, points_to, value_node);
2073 case EXPR_UNARY_POSTFIX_INCREMENT:
2074 case EXPR_UNARY_POSTFIX_DECREMENT:
2075 case EXPR_UNARY_PREFIX_INCREMENT:
2076 case EXPR_UNARY_PREFIX_DECREMENT:
2077 return create_incdec(expression);
2078 case EXPR_UNARY_CAST: {
2079 ir_node *value_node = expression_to_firm(value);
2080 if (is_type_scalar(type)) {
2081 ir_mode *mode = get_ir_mode(type);
2082 ir_node *node = create_conv(dbgi, value_node, mode);
2083 node = do_strict_conv(dbgi, node);
2086 /* make sure firm type is constructed */
2087 (void) get_ir_type(type);
2091 case EXPR_UNARY_CAST_IMPLICIT: {
2092 ir_node *value_node = expression_to_firm(value);
2093 if (is_type_scalar(type)) {
2094 ir_mode *mode = get_ir_mode(type);
2095 return create_conv(dbgi, value_node, mode);
2100 case EXPR_UNARY_ASSUME:
2101 if (firm_opt.confirm)
2102 return handle_assume(dbgi, value);
2109 panic("invalid UNEXPR type found");
2113 * produces a 0/1 depending of the value of a mode_b node
2115 static ir_node *produce_condition_result(const expression_t *expression,
2118 ir_mode *mode = get_ir_mode(expression->base.type);
2119 ir_node *cur_block = get_cur_block();
2121 ir_node *one_block = new_immBlock();
2122 ir_node *one = new_Const(mode, get_mode_one(mode));
2123 ir_node *jmp_one = new_d_Jmp(dbgi);
2125 ir_node *zero_block = new_immBlock();
2126 ir_node *zero = new_Const(mode, get_mode_null(mode));
2127 ir_node *jmp_zero = new_d_Jmp(dbgi);
2129 set_cur_block(cur_block);
2130 create_condition_evaluation(expression, one_block, zero_block);
2131 mature_immBlock(one_block);
2132 mature_immBlock(zero_block);
2134 ir_node *common_block = new_immBlock();
2135 add_immBlock_pred(common_block, jmp_one);
2136 add_immBlock_pred(common_block, jmp_zero);
2137 mature_immBlock(common_block);
2139 ir_node *in[2] = { one, zero };
2140 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2145 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2146 ir_node *value, type_t *type)
2148 pointer_type_t *const pointer_type = &type->pointer;
2149 type_t *const points_to = skip_typeref(pointer_type->points_to);
2150 unsigned elem_size = get_type_size_const(points_to);
2152 /* gcc extension: allow arithmetic with void * and function * */
2153 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2154 is_type_function(points_to)) {
2158 assert(elem_size >= 1);
2162 value = create_conv(dbgi, value, mode_int);
2163 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2164 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2168 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2169 ir_node *left, ir_node *right)
2172 type_t *type_left = skip_typeref(expression->left->base.type);
2173 type_t *type_right = skip_typeref(expression->right->base.type);
2175 expression_kind_t kind = expression->base.kind;
2178 case EXPR_BINARY_SHIFTLEFT:
2179 case EXPR_BINARY_SHIFTRIGHT:
2180 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2181 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2182 mode = get_irn_mode(left);
2183 right = create_conv(dbgi, right, mode_uint);
2186 case EXPR_BINARY_SUB:
2187 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2188 const pointer_type_t *const ptr_type = &type_left->pointer;
2190 mode = get_ir_mode(expression->base.type);
2191 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2192 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2193 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2194 ir_node *const no_mem = new_NoMem();
2195 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2196 mode, op_pin_state_floats);
2197 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2200 case EXPR_BINARY_SUB_ASSIGN:
2201 if (is_type_pointer(type_left)) {
2202 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2203 mode = get_ir_mode(type_left);
2208 case EXPR_BINARY_ADD:
2209 case EXPR_BINARY_ADD_ASSIGN:
2210 if (is_type_pointer(type_left)) {
2211 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2212 mode = get_ir_mode(type_left);
2214 } else if (is_type_pointer(type_right)) {
2215 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2216 mode = get_ir_mode(type_right);
2223 mode = get_irn_mode(right);
2224 left = create_conv(dbgi, left, mode);
2229 case EXPR_BINARY_ADD_ASSIGN:
2230 case EXPR_BINARY_ADD:
2231 return new_d_Add(dbgi, left, right, mode);
2232 case EXPR_BINARY_SUB_ASSIGN:
2233 case EXPR_BINARY_SUB:
2234 return new_d_Sub(dbgi, left, right, mode);
2235 case EXPR_BINARY_MUL_ASSIGN:
2236 case EXPR_BINARY_MUL:
2237 return new_d_Mul(dbgi, left, right, mode);
2238 case EXPR_BINARY_BITWISE_AND:
2239 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2240 return new_d_And(dbgi, left, right, mode);
2241 case EXPR_BINARY_BITWISE_OR:
2242 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2243 return new_d_Or(dbgi, left, right, mode);
2244 case EXPR_BINARY_BITWISE_XOR:
2245 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2246 return new_d_Eor(dbgi, left, right, mode);
2247 case EXPR_BINARY_SHIFTLEFT:
2248 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2249 return new_d_Shl(dbgi, left, right, mode);
2250 case EXPR_BINARY_SHIFTRIGHT:
2251 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2252 if (mode_is_signed(mode)) {
2253 return new_d_Shrs(dbgi, left, right, mode);
2255 return new_d_Shr(dbgi, left, right, mode);
2257 case EXPR_BINARY_DIV:
2258 case EXPR_BINARY_DIV_ASSIGN: {
2259 ir_node *pin = new_Pin(new_NoMem());
2262 if (mode_is_float(mode)) {
2263 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2264 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2266 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2267 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2271 case EXPR_BINARY_MOD:
2272 case EXPR_BINARY_MOD_ASSIGN: {
2273 ir_node *pin = new_Pin(new_NoMem());
2274 assert(!mode_is_float(mode));
2275 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2276 op_pin_state_floats);
2277 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2281 panic("unexpected expression kind");
2285 static ir_node *create_lazy_op(const binary_expression_t *expression)
2287 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2288 type_t *type = expression->base.type;
2289 ir_mode *mode = get_ir_mode(type);
2291 if (is_constant_expression(expression->left)) {
2292 long val = fold_constant(expression->left);
2293 expression_kind_t ekind = expression->base.kind;
2294 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2295 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2296 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2297 return expression_to_firm(expression->right);
2299 return new_Const(mode, get_mode_one(mode));
2303 return produce_condition_result((const expression_t*) expression, dbgi);
2306 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2307 ir_node *right, ir_mode *mode);
2309 static ir_node *create_assign_binop(const binary_expression_t *expression)
2311 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2312 const expression_t *left_expr = expression->left;
2313 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2314 ir_node *right = expression_to_firm(expression->right);
2315 ir_node *left_addr = expression_to_addr(left_expr);
2316 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2317 ir_node *result = create_op(dbgi, expression, left, right);
2319 result = create_conv(dbgi, result, left_mode);
2320 result = do_strict_conv(dbgi, result);
2322 set_value_for_expression_addr(left_expr, result, left_addr);
2327 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2329 expression_kind_t kind = expression->base.kind;
2332 case EXPR_BINARY_EQUAL:
2333 case EXPR_BINARY_NOTEQUAL:
2334 case EXPR_BINARY_LESS:
2335 case EXPR_BINARY_LESSEQUAL:
2336 case EXPR_BINARY_GREATER:
2337 case EXPR_BINARY_GREATEREQUAL:
2338 case EXPR_BINARY_ISGREATER:
2339 case EXPR_BINARY_ISGREATEREQUAL:
2340 case EXPR_BINARY_ISLESS:
2341 case EXPR_BINARY_ISLESSEQUAL:
2342 case EXPR_BINARY_ISLESSGREATER:
2343 case EXPR_BINARY_ISUNORDERED: {
2344 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2345 ir_node *left = expression_to_firm(expression->left);
2346 ir_node *right = expression_to_firm(expression->right);
2347 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2348 long pnc = get_pnc(kind, expression->left->base.type);
2349 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2352 case EXPR_BINARY_ASSIGN: {
2353 ir_node *addr = expression_to_addr(expression->left);
2354 ir_node *right = expression_to_firm(expression->right);
2355 set_value_for_expression_addr(expression->left, right, addr);
2359 case EXPR_BINARY_ADD:
2360 case EXPR_BINARY_SUB:
2361 case EXPR_BINARY_MUL:
2362 case EXPR_BINARY_DIV:
2363 case EXPR_BINARY_MOD:
2364 case EXPR_BINARY_BITWISE_AND:
2365 case EXPR_BINARY_BITWISE_OR:
2366 case EXPR_BINARY_BITWISE_XOR:
2367 case EXPR_BINARY_SHIFTLEFT:
2368 case EXPR_BINARY_SHIFTRIGHT:
2370 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2371 ir_node *left = expression_to_firm(expression->left);
2372 ir_node *right = expression_to_firm(expression->right);
2373 return create_op(dbgi, expression, left, right);
2375 case EXPR_BINARY_LOGICAL_AND:
2376 case EXPR_BINARY_LOGICAL_OR:
2377 return create_lazy_op(expression);
2378 case EXPR_BINARY_COMMA:
2379 /* create side effects of left side */
2380 (void) expression_to_firm(expression->left);
2381 return _expression_to_firm(expression->right);
2383 case EXPR_BINARY_ADD_ASSIGN:
2384 case EXPR_BINARY_SUB_ASSIGN:
2385 case EXPR_BINARY_MUL_ASSIGN:
2386 case EXPR_BINARY_MOD_ASSIGN:
2387 case EXPR_BINARY_DIV_ASSIGN:
2388 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2389 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2390 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2391 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2392 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2393 return create_assign_binop(expression);
2394 case EXPR_BINARY_BUILTIN_EXPECT:
2395 return _expression_to_firm(expression->left);
2397 panic("TODO binexpr type");
2401 static ir_node *array_access_addr(const array_access_expression_t *expression)
2403 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2404 ir_node *base_addr = expression_to_firm(expression->array_ref);
2405 ir_node *offset = expression_to_firm(expression->index);
2407 type_t *offset_type = skip_typeref(expression->index->base.type);
2409 if (is_type_signed(offset_type)) {
2410 mode = get_ir_mode(type_ssize_t);
2412 mode = get_ir_mode(type_size_t);
2414 offset = create_conv(dbgi, offset, mode);
2416 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2417 assert(is_type_pointer(ref_type));
2418 pointer_type_t *pointer_type = &ref_type->pointer;
2420 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2421 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2422 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2424 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2429 static ir_node *array_access_to_firm(
2430 const array_access_expression_t *expression)
2432 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2433 ir_node *addr = array_access_addr(expression);
2434 type_t *type = revert_automatic_type_conversion(
2435 (const expression_t*) expression);
2436 type = skip_typeref(type);
2438 return deref_address(dbgi, type, addr);
2441 static long get_offsetof_offset(const offsetof_expression_t *expression)
2443 type_t *orig_type = expression->type;
2446 designator_t *designator = expression->designator;
2447 for( ; designator != NULL; designator = designator->next) {
2448 type_t *type = skip_typeref(orig_type);
2449 /* be sure the type is constructed */
2450 (void) get_ir_type(type);
2452 if (designator->symbol != NULL) {
2453 assert(is_type_compound(type));
2454 symbol_t *symbol = designator->symbol;
2456 declaration_t *declaration = type->compound.declaration;
2457 declaration_t *iter = declaration->scope.declarations;
2458 for( ; iter != NULL; iter = iter->next) {
2459 if (iter->symbol == symbol) {
2463 assert(iter != NULL);
2465 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2466 offset += get_entity_offset(iter->v.entity);
2468 orig_type = iter->type;
2470 expression_t *array_index = designator->array_index;
2471 assert(designator->array_index != NULL);
2472 assert(is_type_array(type));
2473 assert(is_type_valid(array_index->base.type));
2475 long index = fold_constant(array_index);
2476 ir_type *arr_type = get_ir_type(type);
2477 ir_type *elem_type = get_array_element_type(arr_type);
2478 long elem_size = get_type_size_bytes(elem_type);
2480 offset += index * elem_size;
2482 orig_type = type->array.element_type;
2489 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2491 ir_mode *mode = get_ir_mode(expression->base.type);
2492 long offset = get_offsetof_offset(expression);
2493 tarval *tv = new_tarval_from_long(offset, mode);
2494 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2496 return new_d_Const(dbgi, mode, tv);
2499 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2500 ir_entity *entity, type_t *type);
2502 static ir_node *compound_literal_to_firm(
2503 const compound_literal_expression_t *expression)
2505 type_t *type = expression->type;
2507 /* create an entity on the stack */
2508 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2510 ident *const id = id_unique("CompLit.%u");
2511 ir_type *const irtype = get_ir_type(type);
2512 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2513 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2514 set_entity_ld_ident(entity, id);
2516 set_entity_variability(entity, variability_uninitialized);
2518 /* create initialisation code */
2519 initializer_t *initializer = expression->initializer;
2520 create_local_initializer(initializer, dbgi, entity, type);
2522 /* create a sel for the compound literal address */
2523 ir_node *frame = get_local_frame(entity);
2524 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2529 * Transform a sizeof expression into Firm code.
2531 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2533 type_t *type = expression->type;
2535 type = expression->tp_expression->base.type;
2536 assert(type != NULL);
2539 type = skip_typeref(type);
2540 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2541 if (is_type_array(type) && type->array.is_vla
2542 && expression->tp_expression != NULL) {
2543 expression_to_firm(expression->tp_expression);
2546 return get_type_size(type);
2550 * Transform an alignof expression into Firm code.
2552 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2554 type_t *type = expression->type;
2556 /* beware: if expression is a variable reference, return the
2557 alignment of the variable. */
2558 const expression_t *tp_expression = expression->tp_expression;
2559 const declaration_t *declaration = expr_is_variable(tp_expression);
2560 if (declaration != NULL) {
2561 /* TODO: get the alignment of this variable. */
2563 type = tp_expression->base.type;
2564 assert(type != NULL);
2567 ir_mode *const mode = get_ir_mode(expression->base.type);
2568 symconst_symbol sym;
2569 sym.type_p = get_ir_type(type);
2570 return new_SymConst(mode, sym, symconst_type_align);
2573 static void init_ir_types(void);
2575 long fold_constant(const expression_t *expression)
2577 bool constant_folding_old = constant_folding;
2578 constant_folding = true;
2582 assert(is_constant_expression(expression));
2584 ir_graph *old_current_ir_graph = current_ir_graph;
2585 if (current_ir_graph == NULL) {
2586 current_ir_graph = get_const_code_irg();
2589 ir_node *cnst = expression_to_firm(expression);
2590 current_ir_graph = old_current_ir_graph;
2592 if (!is_Const(cnst)) {
2593 panic("couldn't fold constant\n");
2596 tarval *tv = get_Const_tarval(cnst);
2597 if (!tarval_is_long(tv)) {
2598 panic("result of constant folding is not integer\n");
2601 constant_folding = constant_folding_old;
2603 return get_tarval_long(tv);
2606 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2608 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2610 /* first try to fold a constant condition */
2611 if (is_constant_expression(expression->condition)) {
2612 long val = fold_constant(expression->condition);
2614 expression_t *true_expression = expression->true_expression;
2615 if (true_expression == NULL)
2616 true_expression = expression->condition;
2617 return expression_to_firm(true_expression);
2619 return expression_to_firm(expression->false_expression);
2623 ir_node *cur_block = get_cur_block();
2625 /* create the true block */
2626 ir_node *true_block = new_immBlock();
2628 ir_node *true_val = expression->true_expression != NULL ?
2629 expression_to_firm(expression->true_expression) : NULL;
2630 ir_node *true_jmp = new_Jmp();
2632 /* create the false block */
2633 ir_node *false_block = new_immBlock();
2635 ir_node *false_val = expression_to_firm(expression->false_expression);
2636 ir_node *false_jmp = new_Jmp();
2638 /* create the condition evaluation */
2639 set_cur_block(cur_block);
2640 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2641 if (expression->true_expression == NULL) {
2642 if (cond_expr != NULL) {
2643 true_val = cond_expr;
2645 /* Condition ended with a short circuit (&&, ||, !) operation.
2646 * Generate a "1" as value for the true branch. */
2647 ir_mode *const mode = mode_Is;
2648 true_val = new_Const(mode, get_mode_one(mode));
2651 mature_immBlock(true_block);
2652 mature_immBlock(false_block);
2654 /* create the common block */
2655 ir_node *common_block = new_immBlock();
2656 add_immBlock_pred(common_block, true_jmp);
2657 add_immBlock_pred(common_block, false_jmp);
2658 mature_immBlock(common_block);
2660 /* TODO improve static semantics, so either both or no values are NULL */
2661 if (true_val == NULL || false_val == NULL)
2664 ir_node *in[2] = { true_val, false_val };
2665 ir_mode *mode = get_irn_mode(true_val);
2666 assert(get_irn_mode(false_val) == mode);
2667 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2673 * Returns an IR-node representing the address of a field.
2675 static ir_node *select_addr(const select_expression_t *expression)
2677 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2679 ir_node *compound_addr = expression_to_firm(expression->compound);
2681 /* make sure the type is constructed */
2682 type_t *type = skip_typeref(expression->compound->base.type);
2683 if (is_type_pointer(type)) {
2684 type = type->pointer.points_to;
2686 (void) get_ir_type(type);
2688 declaration_t *entry = expression->compound_entry;
2689 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2690 ir_entity *entity = entry->v.entity;
2692 assert(entity != NULL);
2694 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2699 static ir_node *select_to_firm(const select_expression_t *expression)
2701 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2702 ir_node *addr = select_addr(expression);
2703 type_t *type = revert_automatic_type_conversion(
2704 (const expression_t*) expression);
2705 type = skip_typeref(type);
2707 declaration_t *entry = expression->compound_entry;
2708 type_t *entry_type = skip_typeref(entry->type);
2710 if (entry_type->kind == TYPE_BITFIELD) {
2711 return bitfield_extract_to_firm(expression, addr);
2714 return deref_address(dbgi, type, addr);
2717 /* Values returned by __builtin_classify_type. */
2718 typedef enum gcc_type_class
2724 enumeral_type_class,
2727 reference_type_class,
2731 function_type_class,
2742 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2744 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2750 const atomic_type_t *const atomic_type = &type->atomic;
2751 switch (atomic_type->akind) {
2752 /* should not be reached */
2753 case ATOMIC_TYPE_INVALID:
2757 /* gcc cannot do that */
2758 case ATOMIC_TYPE_VOID:
2759 tc = void_type_class;
2762 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2763 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2764 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2765 case ATOMIC_TYPE_SHORT:
2766 case ATOMIC_TYPE_USHORT:
2767 case ATOMIC_TYPE_INT:
2768 case ATOMIC_TYPE_UINT:
2769 case ATOMIC_TYPE_LONG:
2770 case ATOMIC_TYPE_ULONG:
2771 case ATOMIC_TYPE_LONGLONG:
2772 case ATOMIC_TYPE_ULONGLONG:
2773 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2774 tc = integer_type_class;
2777 case ATOMIC_TYPE_FLOAT:
2778 case ATOMIC_TYPE_DOUBLE:
2779 case ATOMIC_TYPE_LONG_DOUBLE:
2780 tc = real_type_class;
2783 panic("Unexpected atomic type in classify_type_to_firm().");
2786 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2787 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2788 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2789 case TYPE_ARRAY: /* gcc handles this as pointer */
2790 case TYPE_FUNCTION: /* gcc handles this as pointer */
2791 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2792 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2793 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2795 /* gcc handles this as integer */
2796 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2799 /* typedef/typeof should be skipped already */
2806 panic("unexpected TYPE classify_type_to_firm().");
2809 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2810 ir_mode *const mode = mode_int;
2811 tarval *const tv = new_tarval_from_long(tc, mode);
2812 return new_d_Const(dbgi, mode, tv);
2815 static ir_node *function_name_to_firm(
2816 const funcname_expression_t *const expr)
2818 switch(expr->kind) {
2819 case FUNCNAME_FUNCTION:
2820 case FUNCNAME_PRETTY_FUNCTION:
2821 case FUNCNAME_FUNCDNAME:
2822 if (current_function_name == NULL) {
2823 const source_position_t *const src_pos = &expr->base.source_position;
2824 const char *const name = current_function_decl->symbol->string;
2825 const string_t string = { name, strlen(name) + 1 };
2826 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2828 return current_function_name;
2829 case FUNCNAME_FUNCSIG:
2830 if (current_funcsig == NULL) {
2831 const source_position_t *const src_pos = &expr->base.source_position;
2832 ir_entity *ent = get_irg_entity(current_ir_graph);
2833 const char *const name = get_entity_ld_name(ent);
2834 const string_t string = { name, strlen(name) + 1 };
2835 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2837 return current_funcsig;
2839 panic("Unsupported function name");
2842 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2844 statement_t *statement = expr->statement;
2846 assert(statement->kind == STATEMENT_COMPOUND);
2847 return compound_statement_to_firm(&statement->compound);
2850 static ir_node *va_start_expression_to_firm(
2851 const va_start_expression_t *const expr)
2853 ir_type *const method_type = get_ir_type(current_function_decl->type);
2854 int const n = get_method_n_params(method_type) - 1;
2855 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2856 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2857 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2858 ir_node *const no_mem = new_NoMem();
2859 ir_node *const arg_sel =
2860 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2862 ir_node *const cnst = get_type_size(expr->parameter->type);
2863 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2864 set_value_for_expression(expr->ap, add);
2869 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2871 type_t *const type = expr->base.type;
2872 expression_t *const ap_expr = expr->ap;
2873 ir_node *const ap_addr = expression_to_addr(ap_expr);
2874 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2875 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2876 ir_node *const res = deref_address(dbgi, type, ap);
2878 ir_node *const cnst = get_type_size(expr->base.type);
2879 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2881 set_value_for_expression_addr(ap_expr, add, ap_addr);
2886 static ir_node *dereference_addr(const unary_expression_t *const expression)
2888 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2889 return expression_to_firm(expression->value);
2893 * Returns a IR-node representing an lvalue of the given expression.
2895 static ir_node *expression_to_addr(const expression_t *expression)
2897 switch(expression->kind) {
2898 case EXPR_REFERENCE:
2899 return reference_addr(&expression->reference);
2900 case EXPR_ARRAY_ACCESS:
2901 return array_access_addr(&expression->array_access);
2903 return select_addr(&expression->select);
2905 return call_expression_to_firm(&expression->call);
2906 case EXPR_UNARY_DEREFERENCE: {
2907 return dereference_addr(&expression->unary);
2912 panic("trying to get address of non-lvalue");
2915 static ir_node *builtin_constant_to_firm(
2916 const builtin_constant_expression_t *expression)
2918 ir_mode *mode = get_ir_mode(expression->base.type);
2921 if (is_constant_expression(expression->value)) {
2926 return new_Const_long(mode, v);
2929 static ir_node *builtin_prefetch_to_firm(
2930 const builtin_prefetch_expression_t *expression)
2932 ir_node *adr = expression_to_firm(expression->adr);
2933 /* no Firm support for prefetch yet */
2939 * creates firm nodes for an expression. The difference between this function
2940 * and expression_to_firm is, that this version might produce mode_b nodes
2941 * instead of mode_Is.
2943 static ir_node *_expression_to_firm(const expression_t *expression)
2946 if (!constant_folding) {
2947 assert(!expression->base.transformed);
2948 ((expression_t*) expression)->base.transformed = true;
2952 switch(expression->kind) {
2953 case EXPR_CHARACTER_CONSTANT:
2954 return character_constant_to_firm(&expression->conste);
2955 case EXPR_WIDE_CHARACTER_CONSTANT:
2956 return wide_character_constant_to_firm(&expression->conste);
2958 return const_to_firm(&expression->conste);
2959 case EXPR_STRING_LITERAL:
2960 return string_literal_to_firm(&expression->string);
2961 case EXPR_WIDE_STRING_LITERAL:
2962 return wide_string_literal_to_firm(&expression->wide_string);
2963 case EXPR_REFERENCE:
2964 return reference_expression_to_firm(&expression->reference);
2966 return call_expression_to_firm(&expression->call);
2968 return unary_expression_to_firm(&expression->unary);
2970 return binary_expression_to_firm(&expression->binary);
2971 case EXPR_ARRAY_ACCESS:
2972 return array_access_to_firm(&expression->array_access);
2974 return sizeof_to_firm(&expression->typeprop);
2976 return alignof_to_firm(&expression->typeprop);
2977 case EXPR_CONDITIONAL:
2978 return conditional_to_firm(&expression->conditional);
2980 return select_to_firm(&expression->select);
2981 case EXPR_CLASSIFY_TYPE:
2982 return classify_type_to_firm(&expression->classify_type);
2984 return function_name_to_firm(&expression->funcname);
2985 case EXPR_STATEMENT:
2986 return statement_expression_to_firm(&expression->statement);
2988 return va_start_expression_to_firm(&expression->va_starte);
2990 return va_arg_expression_to_firm(&expression->va_arge);
2991 case EXPR_BUILTIN_SYMBOL:
2992 panic("unimplemented expression found");
2993 case EXPR_BUILTIN_CONSTANT_P:
2994 return builtin_constant_to_firm(&expression->builtin_constant);
2995 case EXPR_BUILTIN_PREFETCH:
2996 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2998 return offsetof_to_firm(&expression->offsetofe);
2999 case EXPR_COMPOUND_LITERAL:
3000 return compound_literal_to_firm(&expression->compound_literal);
3006 panic("invalid expression found");
3009 static bool produces_mode_b(const expression_t *expression)
3011 switch (expression->kind) {
3012 case EXPR_BINARY_EQUAL:
3013 case EXPR_BINARY_NOTEQUAL:
3014 case EXPR_BINARY_LESS:
3015 case EXPR_BINARY_LESSEQUAL:
3016 case EXPR_BINARY_GREATER:
3017 case EXPR_BINARY_GREATEREQUAL:
3018 case EXPR_BINARY_ISGREATER:
3019 case EXPR_BINARY_ISGREATEREQUAL:
3020 case EXPR_BINARY_ISLESS:
3021 case EXPR_BINARY_ISLESSEQUAL:
3022 case EXPR_BINARY_ISLESSGREATER:
3023 case EXPR_BINARY_ISUNORDERED:
3024 case EXPR_UNARY_NOT:
3027 case EXPR_BINARY_BUILTIN_EXPECT:
3028 return produces_mode_b(expression->binary.left);
3029 case EXPR_BINARY_COMMA:
3030 return produces_mode_b(expression->binary.right);
3037 static ir_node *expression_to_firm(const expression_t *expression)
3039 if (!produces_mode_b(expression)) {
3040 ir_node *res = _expression_to_firm(expression);
3041 assert(res == NULL || get_irn_mode(res) != mode_b);
3045 if (is_constant_expression(expression)) {
3046 ir_node *res = _expression_to_firm(expression);
3047 ir_mode *mode = get_ir_mode(expression->base.type);
3048 assert(is_Const(res));
3049 if (is_Const_null(res)) {
3050 return new_Const_long(mode, 0);
3052 return new_Const_long(mode, 1);
3056 /* we have to produce a 0/1 from the mode_b expression */
3057 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3058 return produce_condition_result(expression, dbgi);
3062 * create a short-circuit expression evaluation that tries to construct
3063 * efficient control flow structures for &&, || and ! expressions
3065 static ir_node *create_condition_evaluation(const expression_t *expression,
3066 ir_node *true_block,
3067 ir_node *false_block)
3069 switch(expression->kind) {
3070 case EXPR_UNARY_NOT: {
3071 const unary_expression_t *unary_expression = &expression->unary;
3072 create_condition_evaluation(unary_expression->value, false_block,
3076 case EXPR_BINARY_LOGICAL_AND: {
3077 const binary_expression_t *binary_expression = &expression->binary;
3079 ir_node *cur_block = get_cur_block();
3080 ir_node *extra_block = new_immBlock();
3081 set_cur_block(cur_block);
3082 create_condition_evaluation(binary_expression->left, extra_block,
3084 mature_immBlock(extra_block);
3085 set_cur_block(extra_block);
3086 create_condition_evaluation(binary_expression->right, true_block,
3090 case EXPR_BINARY_LOGICAL_OR: {
3091 const binary_expression_t *binary_expression = &expression->binary;
3093 ir_node *cur_block = get_cur_block();
3094 ir_node *extra_block = new_immBlock();
3095 set_cur_block(cur_block);
3096 create_condition_evaluation(binary_expression->left, true_block,
3098 mature_immBlock(extra_block);
3099 set_cur_block(extra_block);
3100 create_condition_evaluation(binary_expression->right, true_block,
3108 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3109 ir_node *cond_expr = _expression_to_firm(expression);
3110 ir_node *condition = create_conv(NULL, cond_expr, mode_b);
3111 ir_node *cond = new_d_Cond(dbgi, condition);
3112 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3113 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3115 /* set branch prediction info based on __builtin_expect */
3116 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3117 long cnst = fold_constant(expression->binary.right);
3118 cond_jmp_predicate pred;
3121 pred = COND_JMP_PRED_FALSE;
3123 pred = COND_JMP_PRED_TRUE;
3125 set_Cond_jmp_pred(cond, pred);
3128 add_immBlock_pred(true_block, true_proj);
3129 if (false_block != NULL) {
3130 add_immBlock_pred(false_block, false_proj);
3133 set_cur_block(NULL);
3139 static void create_declaration_entity(declaration_t *declaration,
3140 declaration_kind_t declaration_kind,
3141 ir_type *parent_type)
3143 type_t *const type = skip_typeref(declaration->type);
3144 if (is_type_function(type)) {
3145 (void) get_function_entity(declaration);
3149 ident *const id = new_id_from_str(declaration->symbol->string);
3150 ir_type *const irtype = get_ir_type(type);
3151 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3152 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3154 declaration->declaration_kind = (unsigned char) declaration_kind;
3155 declaration->v.entity = entity;
3156 set_entity_variability(entity, variability_uninitialized);
3157 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3158 if (parent_type == get_tls_type())
3159 set_entity_allocation(entity, allocation_automatic);
3160 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3161 set_entity_allocation(entity, allocation_static);
3163 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3164 set_entity_volatility(entity, volatility_is_volatile);
3169 typedef struct type_path_entry_t type_path_entry_t;
3170 struct type_path_entry_t {
3172 ir_initializer_t *initializer;
3174 declaration_t *compound_entry;
3177 typedef struct type_path_t type_path_t;
3178 struct type_path_t {
3179 type_path_entry_t *path;
3184 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3186 size_t len = ARR_LEN(path->path);
3188 for(size_t i = 0; i < len; ++i) {
3189 const type_path_entry_t *entry = & path->path[i];
3191 type_t *type = skip_typeref(entry->type);
3192 if (is_type_compound(type)) {
3193 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3194 } else if (is_type_array(type)) {
3195 fprintf(stderr, "[%zd]", entry->index);
3197 fprintf(stderr, "-INVALID-");
3200 fprintf(stderr, " (");
3201 print_type(path->top_type);
3202 fprintf(stderr, ")");
3205 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3207 size_t len = ARR_LEN(path->path);
3209 return & path->path[len-1];
3212 static type_path_entry_t *append_to_type_path(type_path_t *path)
3214 size_t len = ARR_LEN(path->path);
3215 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3217 type_path_entry_t *result = & path->path[len];
3218 memset(result, 0, sizeof(result[0]));
3222 static size_t get_compound_size(const compound_type_t *type)
3224 declaration_t *declaration = type->declaration;
3225 declaration_t *member = declaration->scope.declarations;
3227 for( ; member != NULL; member = member->next) {
3230 /* TODO: cache results? */
3235 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3237 type_t *orig_top_type = path->top_type;
3238 type_t *top_type = skip_typeref(orig_top_type);
3240 assert(is_type_compound(top_type) || is_type_array(top_type));
3242 if (ARR_LEN(path->path) == 0) {
3245 type_path_entry_t *top = get_type_path_top(path);
3246 ir_initializer_t *initializer = top->initializer;
3247 return get_initializer_compound_value(initializer, top->index);
3251 static void descend_into_subtype(type_path_t *path)
3253 type_t *orig_top_type = path->top_type;
3254 type_t *top_type = skip_typeref(orig_top_type);
3256 assert(is_type_compound(top_type) || is_type_array(top_type));
3258 ir_initializer_t *initializer = get_initializer_entry(path);
3260 type_path_entry_t *top = append_to_type_path(path);
3261 top->type = top_type;
3265 if (is_type_compound(top_type)) {
3266 declaration_t *declaration = top_type->compound.declaration;
3267 declaration_t *entry = declaration->scope.declarations;
3269 top->compound_entry = entry;
3271 len = get_compound_size(&top_type->compound);
3273 path->top_type = entry->type;
3275 assert(is_type_array(top_type));
3276 assert(top_type->array.size > 0);
3279 path->top_type = top_type->array.element_type;
3280 len = top_type->array.size;
3282 if (initializer == NULL
3283 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3284 initializer = create_initializer_compound(len);
3285 /* we have to set the entry at the 2nd latest path entry... */
3286 size_t path_len = ARR_LEN(path->path);
3287 assert(path_len >= 1);
3289 type_path_entry_t *entry = & path->path[path_len-2];
3290 ir_initializer_t *tinitializer = entry->initializer;
3291 set_initializer_compound_value(tinitializer, entry->index,
3295 top->initializer = initializer;
3298 static void ascend_from_subtype(type_path_t *path)
3300 type_path_entry_t *top = get_type_path_top(path);
3302 path->top_type = top->type;
3304 size_t len = ARR_LEN(path->path);
3305 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3308 static void walk_designator(type_path_t *path, const designator_t *designator)
3310 /* designators start at current object type */
3311 ARR_RESIZE(type_path_entry_t, path->path, 1);
3313 for( ; designator != NULL; designator = designator->next) {
3314 type_path_entry_t *top = get_type_path_top(path);
3315 type_t *orig_type = top->type;
3316 type_t *type = skip_typeref(orig_type);
3318 if (designator->symbol != NULL) {
3319 assert(is_type_compound(type));
3321 symbol_t *symbol = designator->symbol;
3323 declaration_t *declaration = type->compound.declaration;
3324 declaration_t *iter = declaration->scope.declarations;
3325 for( ; iter != NULL; iter = iter->next, ++index) {
3326 if (iter->symbol == symbol) {
3330 assert(iter != NULL);
3332 top->type = orig_type;
3333 top->compound_entry = iter;
3335 orig_type = iter->type;
3337 expression_t *array_index = designator->array_index;
3338 assert(designator->array_index != NULL);
3339 assert(is_type_array(type));
3340 assert(is_type_valid(array_index->base.type));
3342 long index = fold_constant(array_index);
3345 if (type->array.size_constant == 1) {
3346 long array_size = type->array.size;
3347 assert(index < array_size);
3351 top->type = orig_type;
3352 top->index = (size_t) index;
3353 orig_type = type->array.element_type;
3355 path->top_type = orig_type;
3357 if (designator->next != NULL) {
3358 descend_into_subtype(path);
3362 path->invalid = false;
3365 static void advance_current_object(type_path_t *path)
3367 if (path->invalid) {
3368 /* TODO: handle this... */
3369 panic("invalid initializer in ast2firm (excessive elements)");
3373 type_path_entry_t *top = get_type_path_top(path);
3375 type_t *type = skip_typeref(top->type);
3376 if (is_type_union(type)) {
3377 top->compound_entry = NULL;
3378 } else if (is_type_struct(type)) {
3379 declaration_t *entry = top->compound_entry;
3382 entry = entry->next;
3383 top->compound_entry = entry;
3384 if (entry != NULL) {
3385 path->top_type = entry->type;
3389 assert(is_type_array(type));
3392 if (!type->array.size_constant || top->index < type->array.size) {
3397 /* we're past the last member of the current sub-aggregate, try if we
3398 * can ascend in the type hierarchy and continue with another subobject */
3399 size_t len = ARR_LEN(path->path);
3402 ascend_from_subtype(path);
3403 advance_current_object(path);
3405 path->invalid = true;
3410 static ir_initializer_t *create_ir_initializer(
3411 const initializer_t *initializer, type_t *type);
3413 static ir_initializer_t *create_ir_initializer_value(
3414 const initializer_value_t *initializer)
3416 if (is_type_compound(initializer->value->base.type)) {
3417 panic("initializer creation for compounds not implemented yet");
3419 ir_node *value = expression_to_firm(initializer->value);
3420 return create_initializer_const(value);
3423 static ir_initializer_t *create_ir_initializer_list(
3424 const initializer_list_t *initializer, type_t *type)
3427 memset(&path, 0, sizeof(path));
3428 path.top_type = type;
3429 path.path = NEW_ARR_F(type_path_entry_t, 0);
3431 descend_into_subtype(&path);
3433 for(size_t i = 0; i < initializer->len; ++i) {
3434 const initializer_t *sub_initializer = initializer->initializers[i];
3436 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3437 walk_designator(&path, sub_initializer->designator.designator);
3441 if (sub_initializer->kind == INITIALIZER_VALUE) {
3442 /* we might have to descend into types until we're at a scalar
3445 type_t *orig_top_type = path.top_type;
3446 type_t *top_type = skip_typeref(orig_top_type);
3448 if (is_type_scalar(top_type))
3450 descend_into_subtype(&path);
3454 ir_initializer_t *sub_irinitializer
3455 = create_ir_initializer(sub_initializer, path.top_type);
3457 size_t path_len = ARR_LEN(path.path);
3458 assert(path_len >= 1);
3459 type_path_entry_t *entry = & path.path[path_len-1];
3460 ir_initializer_t *tinitializer = entry->initializer;
3461 set_initializer_compound_value(tinitializer, entry->index,
3464 advance_current_object(&path);
3467 assert(ARR_LEN(path.path) >= 1);
3468 ir_initializer_t *result = path.path[0].initializer;
3469 DEL_ARR_F(path.path);
3474 static ir_initializer_t *create_ir_initializer_string(
3475 const initializer_string_t *initializer, type_t *type)
3477 type = skip_typeref(type);
3479 size_t string_len = initializer->string.size;
3480 assert(type->kind == TYPE_ARRAY);
3481 assert(type->array.size_constant);
3482 size_t len = type->array.size;
3483 ir_initializer_t *irinitializer = create_initializer_compound(len);
3485 const char *string = initializer->string.begin;
3486 ir_mode *mode = get_ir_mode(type->array.element_type);
3488 for(size_t i = 0; i < len; ++i) {
3493 tarval *tv = new_tarval_from_long(c, mode);
3494 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3496 set_initializer_compound_value(irinitializer, i, char_initializer);
3499 return irinitializer;
3502 static ir_initializer_t *create_ir_initializer_wide_string(
3503 const initializer_wide_string_t *initializer, type_t *type)
3505 size_t string_len = initializer->string.size;
3506 assert(type->kind == TYPE_ARRAY);
3507 assert(type->array.size_constant);
3508 size_t len = type->array.size;
3509 ir_initializer_t *irinitializer = create_initializer_compound(len);
3511 const wchar_rep_t *string = initializer->string.begin;
3512 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3514 for(size_t i = 0; i < len; ++i) {
3516 if (i < string_len) {
3519 tarval *tv = new_tarval_from_long(c, mode);
3520 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3522 set_initializer_compound_value(irinitializer, i, char_initializer);
3525 return irinitializer;
3528 static ir_initializer_t *create_ir_initializer(
3529 const initializer_t *initializer, type_t *type)
3531 switch(initializer->kind) {
3532 case INITIALIZER_STRING:
3533 return create_ir_initializer_string(&initializer->string, type);
3535 case INITIALIZER_WIDE_STRING:
3536 return create_ir_initializer_wide_string(&initializer->wide_string,
3539 case INITIALIZER_LIST:
3540 return create_ir_initializer_list(&initializer->list, type);
3542 case INITIALIZER_VALUE:
3543 return create_ir_initializer_value(&initializer->value);
3545 case INITIALIZER_DESIGNATOR:
3546 panic("unexpected designator initializer found");
3548 panic("unknown initializer");
3551 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3554 if (is_atomic_type(type)) {
3555 ir_mode *mode = get_type_mode(type);
3556 tarval *zero = get_mode_null(mode);
3557 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3559 /* TODO: bitfields */
3560 ir_node *mem = get_store();
3561 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3562 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3565 assert(is_compound_type(type));
3568 if (is_Array_type(type)) {
3569 assert(has_array_upper_bound(type, 0));
3570 n_members = get_array_upper_bound_int(type, 0);
3572 n_members = get_compound_n_members(type);
3575 for(int i = 0; i < n_members; ++i) {
3578 if (is_Array_type(type)) {
3579 ir_entity *entity = get_array_element_entity(type);
3580 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3581 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3582 ir_node *in[1] = { cnst };
3583 irtype = get_array_element_type(type);
3584 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3586 ir_entity *member = get_compound_member(type, i);
3588 irtype = get_entity_type(member);
3589 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3592 create_dynamic_null_initializer(irtype, dbgi, addr);
3597 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3598 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3600 switch(get_initializer_kind(initializer)) {
3601 case IR_INITIALIZER_NULL: {
3602 create_dynamic_null_initializer(type, dbgi, base_addr);
3605 case IR_INITIALIZER_CONST: {
3606 ir_node *node = get_initializer_const_value(initializer);
3607 ir_mode *mode = get_irn_mode(node);
3608 assert(get_type_mode(type) == mode);
3610 /* TODO: bitfields... */
3611 ir_node *mem = get_store();
3612 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3613 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3617 case IR_INITIALIZER_TARVAL: {
3618 tarval *tv = get_initializer_tarval_value(initializer);
3619 ir_mode *mode = get_tarval_mode(tv);
3620 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3621 assert(get_type_mode(type) == mode);
3623 /* TODO: bitfields... */
3624 ir_node *mem = get_store();
3625 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3626 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3630 case IR_INITIALIZER_COMPOUND: {
3631 assert(is_compound_type(type));
3633 if (is_Array_type(type)) {
3634 assert(has_array_upper_bound(type, 0));
3635 n_members = get_array_upper_bound_int(type, 0);
3637 n_members = get_compound_n_members(type);
3640 if (get_initializer_compound_n_entries(initializer)
3641 != (unsigned) n_members)
3642 panic("initializer doesn't match compound type");
3644 for(int i = 0; i < n_members; ++i) {
3647 if (is_Array_type(type)) {
3648 ir_entity *entity = get_array_element_entity(type);
3649 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3650 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3651 ir_node *in[1] = { cnst };
3652 irtype = get_array_element_type(type);
3653 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3655 ir_entity *member = get_compound_member(type, i);
3657 irtype = get_entity_type(member);
3658 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3661 ir_initializer_t *sub_init
3662 = get_initializer_compound_value(initializer, i);
3664 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3670 panic("invalid IR_INITIALIZER found");
3673 static void create_dynamic_initializer(ir_initializer_t *initializer,
3674 dbg_info *dbgi, ir_entity *entity)
3676 ir_node *frame = get_local_frame(entity);
3677 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3678 ir_type *type = get_entity_type(entity);
3680 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3683 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3684 ir_entity *entity, type_t *type)
3686 ir_node *memory = get_store();
3687 ir_node *nomem = new_NoMem();
3688 ir_node *frame = get_irg_frame(current_ir_graph);
3689 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3691 if (initializer->kind == INITIALIZER_VALUE) {
3692 initializer_value_t *initializer_value = &initializer->value;
3694 ir_node *value = expression_to_firm(initializer_value->value);
3695 type = skip_typeref(type);
3696 assign_value(dbgi, addr, type, value);
3700 if (!is_constant_initializer(initializer)) {
3701 ir_initializer_t *irinitializer
3702 = create_ir_initializer(initializer, type);
3704 create_dynamic_initializer(irinitializer, dbgi, entity);
3708 /* create the ir_initializer */
3709 ir_graph *const old_current_ir_graph = current_ir_graph;
3710 current_ir_graph = get_const_code_irg();
3712 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3714 assert(current_ir_graph == get_const_code_irg());
3715 current_ir_graph = old_current_ir_graph;
3717 /* create a "template" entity which is copied to the entity on the stack */
3718 ident *const id = id_unique("initializer.%u");
3719 ir_type *const irtype = get_ir_type(type);
3720 ir_type *const global_type = get_glob_type();
3721 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3722 set_entity_ld_ident(init_entity, id);
3724 set_entity_variability(init_entity, variability_initialized);
3725 set_entity_visibility(init_entity, visibility_local);
3726 set_entity_allocation(init_entity, allocation_static);
3728 set_entity_initializer(init_entity, irinitializer);
3730 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3731 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3733 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3734 set_store(copyb_mem);
3737 static void create_initializer_local_variable_entity(declaration_t *declaration)
3739 initializer_t *initializer = declaration->init.initializer;
3740 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3741 ir_entity *entity = declaration->v.entity;
3742 type_t *type = declaration->type;
3743 create_local_initializer(initializer, dbgi, entity, type);
3746 static void create_declaration_initializer(declaration_t *declaration)
3748 initializer_t *initializer = declaration->init.initializer;
3749 if (initializer == NULL)
3752 declaration_kind_t declaration_kind
3753 = (declaration_kind_t) declaration->declaration_kind;
3754 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3755 create_initializer_local_variable_entity(declaration);
3759 type_t *type = skip_typeref(declaration->type);
3761 if (initializer->kind == INITIALIZER_VALUE) {
3762 initializer_value_t *initializer_value = &initializer->value;
3764 = get_dbg_info(&declaration->source_position);
3766 ir_node *value = expression_to_firm(initializer_value->value);
3767 value = do_strict_conv(dbgi, value);
3769 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3770 set_value(declaration->v.value_number, value);
3772 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3774 ir_entity *entity = declaration->v.entity;
3776 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3777 set_entity_variability(entity, variability_constant);
3779 set_entity_variability(entity, variability_initialized);
3781 set_atomic_ent_value(entity, value);
3784 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3785 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3787 ir_entity *entity = declaration->v.entity;
3788 ir_initializer_t *irinitializer
3789 = create_ir_initializer(initializer, type);
3791 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3792 set_entity_variability(entity, variability_constant);
3794 set_entity_variability(entity, variability_initialized);
3796 set_entity_initializer(entity, irinitializer);
3800 static void create_variable_length_array(declaration_t *declaration)
3802 /* initializers are not allowed for VLAs */
3803 assert(declaration->init.initializer == NULL);
3805 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3806 declaration->v.vla_base = NULL;
3808 /* TODO: record VLA somewhere so we create the free node when we leave
3812 static void allocate_variable_length_array(declaration_t *declaration)
3814 /* initializers are not allowed for VLAs */
3815 assert(declaration->init.initializer == NULL);
3816 assert(get_cur_block() != NULL);
3818 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3819 type_t *type = declaration->type;
3820 ir_type *el_type = get_ir_type(type->array.element_type);
3822 /* make sure size_node is calculated */
3823 get_type_size(type);
3824 ir_node *elems = type->array.size_node;
3825 ir_node *mem = get_store();
3826 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3828 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3829 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3832 assert(declaration->declaration_kind
3833 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3834 declaration->v.vla_base = addr;
3838 * Creates a Firm local variable from a declaration.
3840 static void create_local_variable(declaration_t *declaration)
3842 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3844 bool needs_entity = declaration->address_taken;
3845 type_t *type = skip_typeref(declaration->type);
3847 /* is it a variable length array? */
3848 if (is_type_array(type) && !type->array.size_constant) {
3849 create_variable_length_array(declaration);
3851 } else if (is_type_array(type) || is_type_compound(type)) {
3852 needs_entity = true;
3853 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3854 needs_entity = true;
3858 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3859 create_declaration_entity(declaration,
3860 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3863 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3864 declaration->v.value_number = next_value_number_function;
3865 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3866 ++next_value_number_function;
3870 static void create_local_static_variable(declaration_t *declaration)
3872 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3874 type_t *const type = skip_typeref(declaration->type);
3875 ir_type *const global_type = get_glob_type();
3876 ir_type *const irtype = get_ir_type(type);
3877 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3879 size_t l = strlen(declaration->symbol->string);
3880 char buf[l + sizeof(".%u")];
3881 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3882 ident *const id = id_unique(buf);
3884 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3886 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3887 set_entity_volatility(entity, volatility_is_volatile);
3890 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3891 declaration->v.entity = entity;
3892 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3893 set_entity_variability(entity, variability_uninitialized);
3894 set_entity_visibility(entity, visibility_local);
3895 set_entity_allocation(entity, allocation_static);
3897 ir_graph *const old_current_ir_graph = current_ir_graph;
3898 current_ir_graph = get_const_code_irg();
3900 create_declaration_initializer(declaration);
3902 assert(current_ir_graph == get_const_code_irg());
3903 current_ir_graph = old_current_ir_graph;
3908 static void return_statement_to_firm(return_statement_t *statement)
3910 if (get_cur_block() == NULL)
3913 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3914 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3919 if (get_method_n_ress(func_irtype) > 0) {
3920 ir_type *res_type = get_method_res_type(func_irtype, 0);
3922 if (statement->value != NULL) {
3923 ir_node *node = expression_to_firm(statement->value);
3924 node = do_strict_conv(dbgi, node);
3928 if (is_compound_type(res_type)) {
3931 mode = get_type_mode(res_type);
3933 in[0] = new_Unknown(mode);
3937 /* build return_value for its side effects */
3938 if (statement->value != NULL) {
3939 expression_to_firm(statement->value);
3944 ir_node *store = get_store();
3945 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3947 ir_node *end_block = get_irg_end_block(current_ir_graph);
3948 add_immBlock_pred(end_block, ret);
3950 set_cur_block(NULL);
3953 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3955 if (get_cur_block() == NULL)
3958 return expression_to_firm(statement->expression);
3961 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3963 declaration_t *declaration = compound->scope.declarations;
3964 for( ; declaration != NULL; declaration = declaration->next) {
3965 create_local_declaration(declaration);
3968 ir_node *result = NULL;
3969 statement_t *statement = compound->statements;
3970 for( ; statement != NULL; statement = statement->base.next) {
3971 if (statement->base.next == NULL
3972 && statement->kind == STATEMENT_EXPRESSION) {
3973 result = expression_statement_to_firm(
3974 &statement->expression);
3977 statement_to_firm(statement);
3983 static void create_global_variable(declaration_t *declaration)
3987 switch ((storage_class_tag_t)declaration->storage_class) {
3988 case STORAGE_CLASS_STATIC:
3989 vis = visibility_local;
3992 case STORAGE_CLASS_EXTERN:
3993 vis = visibility_external_allocated;
3996 case STORAGE_CLASS_NONE:
3997 vis = visibility_external_visible;
4000 case STORAGE_CLASS_THREAD:
4001 vis = visibility_external_visible;
4004 case STORAGE_CLASS_THREAD_EXTERN:
4005 vis = visibility_external_allocated;
4008 case STORAGE_CLASS_THREAD_STATIC:
4009 vis = visibility_local;
4013 var_type = get_tls_type();
4017 var_type = get_glob_type();
4021 create_declaration_entity(declaration,
4022 DECLARATION_KIND_GLOBAL_VARIABLE,
4024 if (!is_type_function(skip_typeref(declaration->type))) {
4025 set_entity_visibility(declaration->v.entity, vis);
4030 case STORAGE_CLASS_TYPEDEF:
4031 case STORAGE_CLASS_AUTO:
4032 case STORAGE_CLASS_REGISTER:
4033 case STORAGE_CLASS_ENUM_ENTRY:
4036 panic("Invalid storage class for global variable");
4039 static void create_local_declaration(declaration_t *declaration)
4041 if (declaration->namespc != NAMESPACE_NORMAL)
4043 /* construct type */
4044 (void) get_ir_type(declaration->type);
4045 if (declaration->symbol == NULL) {
4049 type_t *type = skip_typeref(declaration->type);
4051 switch ((storage_class_tag_t) declaration->storage_class) {
4052 case STORAGE_CLASS_STATIC:
4053 create_local_static_variable(declaration);
4055 case STORAGE_CLASS_EXTERN:
4056 create_global_variable(declaration);
4057 create_declaration_initializer(declaration);
4059 case STORAGE_CLASS_NONE:
4060 case STORAGE_CLASS_AUTO:
4061 case STORAGE_CLASS_REGISTER:
4062 if (is_type_function(type)) {
4063 if (declaration->init.statement != NULL) {
4064 panic("nested functions not supported yet");
4066 get_function_entity(declaration);
4069 create_local_variable(declaration);
4072 case STORAGE_CLASS_ENUM_ENTRY:
4073 /* should already be handled */
4074 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4076 case STORAGE_CLASS_TYPEDEF:
4077 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4079 case STORAGE_CLASS_THREAD:
4080 case STORAGE_CLASS_THREAD_EXTERN:
4081 case STORAGE_CLASS_THREAD_STATIC:
4084 panic("invalid storage class found");
4087 static void initialize_local_declaration(declaration_t *declaration)
4089 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4092 switch ((declaration_kind_t) declaration->declaration_kind) {
4093 case DECLARATION_KIND_LOCAL_VARIABLE:
4094 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4095 create_declaration_initializer(declaration);
4098 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4099 allocate_variable_length_array(declaration);
4102 case DECLARATION_KIND_LABEL_BLOCK:
4103 case DECLARATION_KIND_COMPOUND_MEMBER:
4104 case DECLARATION_KIND_GLOBAL_VARIABLE:
4105 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4106 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4107 case DECLARATION_KIND_FUNCTION:
4108 case DECLARATION_KIND_TYPE:
4109 case DECLARATION_KIND_ENUM_ENTRY:
4112 case DECLARATION_KIND_UNKNOWN:
4113 panic("can't initialize unknwon declaration");
4115 panic("invalid declaration kind");
4118 static void declaration_statement_to_firm(declaration_statement_t *statement)
4120 declaration_t *declaration = statement->declarations_begin;
4121 declaration_t *end = statement->declarations_end->next;
4122 for( ; declaration != end; declaration = declaration->next) {
4123 if (declaration->namespc != NAMESPACE_NORMAL)
4125 initialize_local_declaration(declaration);
4129 static void if_statement_to_firm(if_statement_t *statement)
4131 ir_node *cur_block = get_cur_block();
4133 ir_node *fallthrough_block = NULL;
4135 /* the true (blocks) */
4136 ir_node *true_block = NULL;
4137 if (statement->true_statement != NULL) {
4138 true_block = new_immBlock();
4139 statement_to_firm(statement->true_statement);
4140 if (get_cur_block() != NULL) {
4141 ir_node *jmp = new_Jmp();
4142 if (fallthrough_block == NULL)
4143 fallthrough_block = new_immBlock();
4144 add_immBlock_pred(fallthrough_block, jmp);
4148 /* the false (blocks) */
4149 ir_node *false_block = NULL;
4150 if (statement->false_statement != NULL) {
4151 false_block = new_immBlock();
4153 statement_to_firm(statement->false_statement);
4154 if (get_cur_block() != NULL) {
4155 ir_node *jmp = new_Jmp();
4156 if (fallthrough_block == NULL)
4157 fallthrough_block = new_immBlock();
4158 add_immBlock_pred(fallthrough_block, jmp);
4162 /* create the condition */
4163 if (cur_block != NULL) {
4164 if (true_block == NULL || false_block == NULL) {
4165 if (fallthrough_block == NULL)
4166 fallthrough_block = new_immBlock();
4167 if (true_block == NULL)
4168 true_block = fallthrough_block;
4169 if (false_block == NULL)
4170 false_block = fallthrough_block;
4173 set_cur_block(cur_block);
4174 create_condition_evaluation(statement->condition, true_block,
4178 mature_immBlock(true_block);
4179 if (false_block != fallthrough_block && false_block != NULL) {
4180 mature_immBlock(false_block);
4182 if (fallthrough_block != NULL) {
4183 mature_immBlock(fallthrough_block);
4186 set_cur_block(fallthrough_block);
4189 static void while_statement_to_firm(while_statement_t *statement)
4191 ir_node *jmp = NULL;
4192 if (get_cur_block() != NULL) {
4196 /* create the header block */
4197 ir_node *header_block = new_immBlock();
4199 add_immBlock_pred(header_block, jmp);
4203 ir_node *old_continue_label = continue_label;
4204 ir_node *old_break_label = break_label;
4205 continue_label = header_block;
4208 ir_node *body_block = new_immBlock();
4209 statement_to_firm(statement->body);
4210 ir_node *false_block = break_label;
4212 assert(continue_label == header_block);
4213 continue_label = old_continue_label;
4214 break_label = old_break_label;
4216 if (get_cur_block() != NULL) {
4218 add_immBlock_pred(header_block, jmp);
4221 /* shortcut for while(true) */
4222 if (is_constant_expression(statement->condition)
4223 && fold_constant(statement->condition) != 0) {
4224 set_cur_block(header_block);
4225 ir_node *header_jmp = new_Jmp();
4226 add_immBlock_pred(body_block, header_jmp);
4228 keep_alive(body_block);
4229 set_cur_block(body_block);
4230 keep_alive(get_store());
4232 if (false_block == NULL) {
4233 false_block = new_immBlock();
4236 /* create the condition */
4237 set_cur_block(header_block);
4239 create_condition_evaluation(statement->condition, body_block,
4243 mature_immBlock(body_block);
4244 mature_immBlock(header_block);
4245 if (false_block != NULL) {
4246 mature_immBlock(false_block);
4249 set_cur_block(false_block);
4252 static void do_while_statement_to_firm(do_while_statement_t *statement)
4254 ir_node *jmp = NULL;
4255 if (get_cur_block() != NULL) {
4259 /* create the header block */
4260 ir_node *header_block = new_immBlock();
4263 ir_node *body_block = new_immBlock();
4265 add_immBlock_pred(body_block, jmp);
4268 ir_node *old_continue_label = continue_label;
4269 ir_node *old_break_label = break_label;
4270 continue_label = header_block;
4273 statement_to_firm(statement->body);
4274 ir_node *false_block = break_label;
4276 assert(continue_label == header_block);
4277 continue_label = old_continue_label;
4278 break_label = old_break_label;
4280 if (get_cur_block() != NULL) {
4281 ir_node *body_jmp = new_Jmp();
4282 add_immBlock_pred(header_block, body_jmp);
4283 mature_immBlock(header_block);
4286 if (false_block == NULL) {
4287 false_block = new_immBlock();
4290 /* create the condition */
4291 set_cur_block(header_block);
4293 create_condition_evaluation(statement->condition, body_block, false_block);
4294 mature_immBlock(body_block);
4295 mature_immBlock(header_block);
4296 if (false_block != NULL) {
4297 mature_immBlock(false_block);
4300 set_cur_block(false_block);
4303 static void for_statement_to_firm(for_statement_t *statement)
4305 ir_node *jmp = NULL;
4307 /* create declarations */
4308 declaration_t *declaration = statement->scope.declarations;
4309 for( ; declaration != NULL; declaration = declaration->next) {
4310 create_local_declaration(declaration);
4312 declaration = statement->scope.declarations;
4313 for( ; declaration != NULL; declaration = declaration->next) {
4314 initialize_local_declaration(declaration);
4317 if (get_cur_block() != NULL) {
4318 if (statement->initialisation != NULL) {
4319 expression_to_firm(statement->initialisation);
4326 /* create the step block */
4327 ir_node *const step_block = new_immBlock();
4328 if (statement->step != NULL) {
4329 expression_to_firm(statement->step);
4331 ir_node *const step_jmp = new_Jmp();
4333 /* create the header block */
4334 ir_node *const header_block = new_immBlock();
4336 add_immBlock_pred(header_block, jmp);
4338 add_immBlock_pred(header_block, step_jmp);
4340 /* the false block */
4341 ir_node *const false_block = new_immBlock();
4344 ir_node * body_block;
4345 if (statement->body != NULL) {
4346 ir_node *const old_continue_label = continue_label;
4347 ir_node *const old_break_label = break_label;
4348 continue_label = step_block;
4349 break_label = false_block;
4351 body_block = new_immBlock();
4352 statement_to_firm(statement->body);
4354 assert(continue_label == step_block);
4355 assert(break_label == false_block);
4356 continue_label = old_continue_label;
4357 break_label = old_break_label;
4359 if (get_cur_block() != NULL) {
4361 add_immBlock_pred(step_block, jmp);
4364 body_block = step_block;
4367 /* create the condition */
4368 set_cur_block(header_block);
4369 if (statement->condition != NULL) {
4370 create_condition_evaluation(statement->condition, body_block,
4373 keep_alive(header_block);
4374 keep_alive(get_store());
4376 add_immBlock_pred(body_block, jmp);
4379 mature_immBlock(body_block);
4380 mature_immBlock(false_block);
4381 mature_immBlock(step_block);
4382 mature_immBlock(header_block);
4383 mature_immBlock(false_block);
4385 set_cur_block(false_block);
4388 static void create_jump_statement(const statement_t *statement,
4389 ir_node *target_block)
4391 if (get_cur_block() == NULL)
4394 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4395 ir_node *jump = new_d_Jmp(dbgi);
4396 add_immBlock_pred(target_block, jump);
4398 set_cur_block(NULL);
4401 static ir_node *get_break_label(void)
4403 if (break_label == NULL) {
4404 ir_node *cur_block = get_cur_block();
4405 break_label = new_immBlock();
4406 set_cur_block(cur_block);
4411 static void switch_statement_to_firm(switch_statement_t *statement)
4413 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4415 ir_node *expression = expression_to_firm(statement->expression);
4416 ir_node *cond = new_d_Cond(dbgi, expression);
4418 set_cur_block(NULL);
4420 ir_node *const old_switch_cond = current_switch_cond;
4421 ir_node *const old_break_label = break_label;
4422 const bool old_saw_default_label = saw_default_label;
4423 saw_default_label = false;
4424 current_switch_cond = cond;
4426 switch_statement_t *const old_switch = current_switch;
4427 current_switch = statement;
4429 /* determine a free number for the default label */
4430 unsigned long num_cases = 0;
4432 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4433 if (l->expression == NULL) {
4437 if (l->last_case >= l->first_case)
4438 num_cases += l->last_case - l->first_case;
4439 if (l->last_case > def_nr)
4440 def_nr = l->last_case;
4443 if (def_nr + 1 < 0) {
4444 /* Bad: an overflow occurred, we cannot be sure that the
4445 * maximum + 1 is a free number. Scan the values a second
4446 * time to find a free number.
4448 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4451 memset(bits, 0, (num_cases + 7) >> 3);
4452 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4453 if (l->expression == NULL) {
4457 for (long cns = l->first_case; cns <= l->last_case; ++cns) {
4458 if (cns >= 0 && (unsigned long)cns < num_cases)
4459 bits[cns >> 3] |= (1 << (cns & 7));
4462 /* We look at the first num_cases constants:
4463 * Either they are densed, so we took the last (num_cases)
4464 * one, or they are non densed, so we will find one free
4467 for (i = 0; i < num_cases; ++i)
4468 if ((bits[i >> 3] & (i & 7)) == 0)
4476 statement->default_proj_nr = def_nr;
4478 if (statement->body != NULL) {
4479 statement_to_firm(statement->body);
4482 if (get_cur_block() != NULL) {
4483 ir_node *jmp = new_Jmp();
4484 add_immBlock_pred(get_break_label(), jmp);
4487 if (!saw_default_label) {
4488 set_cur_block(get_nodes_block(cond));
4489 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4490 statement->default_proj_nr);
4491 add_immBlock_pred(get_break_label(), proj);
4494 if (break_label != NULL) {
4495 mature_immBlock(break_label);
4497 set_cur_block(break_label);
4499 assert(current_switch_cond == cond);
4500 current_switch = old_switch;
4501 current_switch_cond = old_switch_cond;
4502 break_label = old_break_label;
4503 saw_default_label = old_saw_default_label;
4506 static void case_label_to_firm(const case_label_statement_t *statement)
4508 if (statement->is_empty)
4511 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4513 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4516 ir_node *old_block = get_nodes_block(current_switch_cond);
4517 ir_node *block = new_immBlock();
4519 set_cur_block(old_block);
4520 if (statement->expression != NULL) {
4521 long pn = statement->first_case;
4522 long end_pn = statement->last_case;
4523 assert(pn <= end_pn);
4524 /* create jumps for all cases in the given range */
4526 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4527 add_immBlock_pred(block, proj);
4528 } while(pn++ < end_pn);
4530 saw_default_label = true;
4531 proj = new_d_defaultProj(dbgi, current_switch_cond,
4532 current_switch->default_proj_nr);
4534 add_immBlock_pred(block, proj);
4537 if (fallthrough != NULL) {
4538 add_immBlock_pred(block, fallthrough);
4540 mature_immBlock(block);
4541 set_cur_block(block);
4543 if (statement->statement != NULL) {
4544 statement_to_firm(statement->statement);
4548 static ir_node *get_label_block(declaration_t *label)
4550 assert(label->namespc == NAMESPACE_LABEL);
4552 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4553 return label->v.block;
4555 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4557 ir_node *old_cur_block = get_cur_block();
4558 ir_node *block = new_immBlock();
4559 set_cur_block(old_cur_block);
4561 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4562 label->v.block = block;
4564 ARR_APP1(ir_node *, imature_blocks, block);
4569 static void label_to_firm(const label_statement_t *statement)
4571 ir_node *block = get_label_block(statement->label);
4573 if (get_cur_block() != NULL) {
4574 ir_node *jmp = new_Jmp();
4575 add_immBlock_pred(block, jmp);
4578 set_cur_block(block);
4579 keep_alive(get_store());
4582 if (statement->statement != NULL) {
4583 statement_to_firm(statement->statement);
4587 static void goto_to_firm(const goto_statement_t *statement)
4589 if (get_cur_block() == NULL)
4592 ir_node *block = get_label_block(statement->label);
4593 ir_node *jmp = new_Jmp();
4594 add_immBlock_pred(block, jmp);
4596 set_cur_block(NULL);
4599 static void asm_statement_to_firm(const asm_statement_t *statement)
4601 bool needs_memory = false;
4603 if (statement->is_volatile) {
4604 needs_memory = true;
4607 size_t n_clobbers = 0;
4608 asm_clobber_t *clobber = statement->clobbers;
4609 for( ; clobber != NULL; clobber = clobber->next) {
4610 const char *clobber_str = clobber->clobber.begin;
4612 if (!be_is_valid_clobber(clobber_str)) {
4613 errorf(&statement->base.source_position,
4614 "invalid clobber '%s' specified", clobber->clobber);
4618 if (strcmp(clobber_str, "memory") == 0) {
4619 needs_memory = true;
4623 ident *id = new_id_from_str(clobber_str);
4624 obstack_ptr_grow(&asm_obst, id);
4627 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4628 ident **clobbers = NULL;
4629 if (n_clobbers > 0) {
4630 clobbers = obstack_finish(&asm_obst);
4633 size_t n_inputs = 0;
4634 asm_argument_t *argument = statement->inputs;
4635 for ( ; argument != NULL; argument = argument->next)
4637 size_t n_outputs = 0;
4638 argument = statement->outputs;
4639 for ( ; argument != NULL; argument = argument->next)
4642 unsigned next_pos = 0;
4644 ir_node *ins[n_inputs + n_outputs + 1];
4647 ir_asm_constraint tmp_in_constraints[n_outputs];
4649 const expression_t *out_exprs[n_outputs];
4650 ir_node *out_addrs[n_outputs];
4651 size_t out_size = 0;
4653 argument = statement->outputs;
4654 for ( ; argument != NULL; argument = argument->next) {
4655 const char *constraints = argument->constraints.begin;
4656 asm_constraint_flags_t asm_flags
4657 = be_parse_asm_constraints(constraints);
4659 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4660 errorf(&statement->base.source_position,
4661 "some constraints in '%s' are not supported", constraints);
4664 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4665 errorf(&statement->base.source_position,
4666 "some constraints in '%s' are invalid", constraints);
4669 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4670 errorf(&statement->base.source_position,
4671 "no write flag specified for output constraints '%s'",
4676 unsigned pos = next_pos++;
4677 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4678 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4679 expression_t *expr = argument->expression;
4680 ir_node *addr = expression_to_addr(expr);
4681 /* in+output, construct an artifical same_as constraint on the
4683 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4685 ir_node *value = get_value_from_lvalue(expr, addr);
4687 snprintf(buf, sizeof(buf), "%d", pos);
4689 ir_asm_constraint constraint;
4690 constraint.pos = pos;
4691 constraint.constraint = new_id_from_str(buf);
4692 constraint.mode = get_ir_mode(expr->base.type);
4693 tmp_in_constraints[in_size] = constraint;
4694 ins[in_size] = value;
4699 out_exprs[out_size] = expr;
4700 out_addrs[out_size] = addr;
4702 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4703 /* pure memory ops need no input (but we have to make sure we
4704 * attach to the memory) */
4705 assert(! (asm_flags &
4706 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4707 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4708 needs_memory = true;
4710 /* we need to attach the address to the inputs */
4711 expression_t *expr = argument->expression;
4713 ir_asm_constraint constraint;
4714 constraint.pos = pos;
4715 constraint.constraint = new_id_from_str(constraints);
4716 constraint.mode = NULL;
4717 tmp_in_constraints[in_size] = constraint;
4719 ins[in_size] = expression_to_addr(expr);
4723 errorf(&statement->base.source_position,
4724 "only modifiers but no place set in constraints '%s'",
4729 ir_asm_constraint constraint;
4730 constraint.pos = pos;
4731 constraint.constraint = new_id_from_str(constraints);
4732 constraint.mode = get_ir_mode(argument->expression->base.type);
4734 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4736 assert(obstack_object_size(&asm_obst)
4737 == out_size * sizeof(ir_asm_constraint));
4738 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4741 obstack_grow(&asm_obst, tmp_in_constraints,
4742 in_size * sizeof(tmp_in_constraints[0]));
4743 /* find and count input and output arguments */
4744 argument = statement->inputs;
4745 for( ; argument != NULL; argument = argument->next) {
4746 const char *constraints = argument->constraints.begin;
4747 asm_constraint_flags_t asm_flags
4748 = be_parse_asm_constraints(constraints);
4750 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4751 errorf(&statement->base.source_position,
4752 "some constraints in '%s' are not supported", constraints);
4755 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4756 errorf(&statement->base.source_position,
4757 "some constraints in '%s' are invalid", constraints);
4760 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4761 errorf(&statement->base.source_position,
4762 "write flag specified for input constraints '%s'",
4768 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4769 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4770 /* we can treat this as "normal" input */
4771 input = expression_to_firm(argument->expression);
4772 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4773 /* pure memory ops need no input (but we have to make sure we
4774 * attach to the memory) */
4775 assert(! (asm_flags &
4776 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4777 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4778 needs_memory = true;
4779 input = expression_to_addr(argument->expression);
4781 errorf(&statement->base.source_position,
4782 "only modifiers but no place set in constraints '%s'",
4787 ir_asm_constraint constraint;
4788 constraint.pos = next_pos++;
4789 constraint.constraint = new_id_from_str(constraints);
4790 constraint.mode = get_irn_mode(input);
4792 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4793 ins[in_size++] = input;
4797 ir_asm_constraint constraint;
4798 constraint.pos = next_pos++;
4799 constraint.constraint = new_id_from_str("");
4800 constraint.mode = mode_M;
4802 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4803 ins[in_size++] = get_store();
4806 assert(obstack_object_size(&asm_obst)
4807 == in_size * sizeof(ir_asm_constraint));
4808 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4810 /* create asm node */
4811 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4813 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4815 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4816 out_size, output_constraints,
4817 n_clobbers, clobbers, asm_text);
4819 if (statement->is_volatile) {
4820 set_irn_pinned(node, op_pin_state_pinned);
4822 set_irn_pinned(node, op_pin_state_floats);
4825 /* create output projs & connect them */
4827 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4832 for (i = 0; i < out_size; ++i) {
4833 const expression_t *out_expr = out_exprs[i];
4835 ir_mode *mode = get_ir_mode(out_expr->base.type);
4836 ir_node *proj = new_Proj(node, mode, pn);
4837 ir_node *addr = out_addrs[i];
4839 set_value_for_expression_addr(out_expr, proj, addr);
4843 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4844 statement_to_firm(statement->try_statement);
4845 warningf(&statement->base.source_position, "structured exception handling ignored");
4848 static void leave_statement_to_firm(leave_statement_t *statement) {
4849 errorf(&statement->base.source_position, "__leave not supported yet");
4853 * Transform a statement.
4855 static void statement_to_firm(statement_t *statement)
4858 assert(!statement->base.transformed);
4859 statement->base.transformed = true;
4862 switch(statement->kind) {
4863 case STATEMENT_INVALID:
4864 panic("invalid statement found");
4866 case STATEMENT_EMPTY:
4869 case STATEMENT_COMPOUND:
4870 compound_statement_to_firm(&statement->compound);
4872 case STATEMENT_RETURN:
4873 return_statement_to_firm(&statement->returns);
4875 case STATEMENT_EXPRESSION:
4876 expression_statement_to_firm(&statement->expression);
4879 if_statement_to_firm(&statement->ifs);
4881 case STATEMENT_WHILE:
4882 while_statement_to_firm(&statement->whiles);
4884 case STATEMENT_DO_WHILE:
4885 do_while_statement_to_firm(&statement->do_while);
4887 case STATEMENT_DECLARATION:
4888 declaration_statement_to_firm(&statement->declaration);
4890 case STATEMENT_BREAK:
4891 create_jump_statement(statement, get_break_label());
4893 case STATEMENT_CONTINUE:
4894 create_jump_statement(statement, continue_label);
4896 case STATEMENT_SWITCH:
4897 switch_statement_to_firm(&statement->switchs);
4899 case STATEMENT_CASE_LABEL:
4900 case_label_to_firm(&statement->case_label);
4903 for_statement_to_firm(&statement->fors);
4905 case STATEMENT_LABEL:
4906 label_to_firm(&statement->label);
4908 case STATEMENT_GOTO:
4909 goto_to_firm(&statement->gotos);
4912 asm_statement_to_firm(&statement->asms);
4914 case STATEMENT_MS_TRY:
4915 ms_try_statement_to_firm(&statement->ms_try);
4917 case STATEMENT_LEAVE:
4918 leave_statement_to_firm(&statement->leave);
4921 panic("Statement not implemented\n");
4924 static int count_decls_in_expression(const expression_t *expression);
4926 static int count_local_declarations(const declaration_t * decl,
4927 const declaration_t *const end)
4930 for (; decl != end; decl = decl->next) {
4931 if (decl->namespc != NAMESPACE_NORMAL)
4933 type_t *type = skip_typeref(decl->type);
4935 if (!decl->address_taken && is_type_scalar(type))
4937 const initializer_t *initializer = decl->init.initializer;
4938 /* FIXME: should walk initializer hierarchies... */
4939 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4940 count += count_decls_in_expression(initializer->value.value);
4946 static int count_decls_in_expression(const expression_t *expression) {
4949 if (expression == NULL)
4952 switch((expression_kind_t) expression->base.kind) {
4953 case EXPR_STATEMENT:
4954 return count_decls_in_stmts(expression->statement.statement);
4956 int count_left = count_decls_in_expression(expression->binary.left);
4957 int count_right = count_decls_in_expression(expression->binary.right);
4958 return count_left + count_right;
4961 return count_decls_in_expression(expression->unary.value);
4963 call_argument_t *argument = expression->call.arguments;
4964 for( ; argument != NULL; argument = argument->next) {
4965 count += count_decls_in_expression(argument->expression);
4972 panic("unexpected expression kind");
4974 case EXPR_COMPOUND_LITERAL:
4978 case EXPR_CONDITIONAL:
4979 count += count_decls_in_expression(expression->conditional.condition);
4980 count += count_decls_in_expression(expression->conditional.true_expression);
4981 count += count_decls_in_expression(expression->conditional.false_expression);
4984 case EXPR_BUILTIN_PREFETCH:
4985 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4986 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4987 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4990 case EXPR_BUILTIN_CONSTANT_P:
4991 count += count_decls_in_expression(expression->builtin_constant.value);
4995 count += count_decls_in_expression(expression->select.compound);
4998 case EXPR_ARRAY_ACCESS:
4999 count += count_decls_in_expression(expression->array_access.array_ref);
5000 count += count_decls_in_expression(expression->array_access.index);
5003 case EXPR_CLASSIFY_TYPE:
5004 count += count_decls_in_expression(expression->classify_type.type_expression);
5008 case EXPR_ALIGNOF: {
5009 expression_t *tp_expression = expression->typeprop.tp_expression;
5010 if (tp_expression != NULL) {
5011 count += count_decls_in_expression(tp_expression);
5017 case EXPR_REFERENCE:
5019 case EXPR_CHARACTER_CONSTANT:
5020 case EXPR_WIDE_CHARACTER_CONSTANT:
5021 case EXPR_STRING_LITERAL:
5022 case EXPR_WIDE_STRING_LITERAL:
5024 case EXPR_BUILTIN_SYMBOL:
5030 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
5031 * (or implement all the missing expressions here/implement a walker)
5037 static int count_decls_in_stmts(const statement_t *stmt)
5040 for (; stmt != NULL; stmt = stmt->base.next) {
5041 switch (stmt->kind) {
5042 case STATEMENT_EMPTY:
5045 case STATEMENT_DECLARATION: {
5046 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5047 count += count_local_declarations(decl_stmt->declarations_begin,
5048 decl_stmt->declarations_end->next);
5052 case STATEMENT_COMPOUND: {
5053 const compound_statement_t *const comp =
5055 count += count_decls_in_stmts(comp->statements);
5059 case STATEMENT_IF: {
5060 const if_statement_t *const if_stmt = &stmt->ifs;
5061 count += count_decls_in_expression(if_stmt->condition);
5062 count += count_decls_in_stmts(if_stmt->true_statement);
5063 count += count_decls_in_stmts(if_stmt->false_statement);
5067 case STATEMENT_SWITCH: {
5068 const switch_statement_t *const switch_stmt = &stmt->switchs;
5069 count += count_decls_in_expression(switch_stmt->expression);
5070 count += count_decls_in_stmts(switch_stmt->body);
5074 case STATEMENT_LABEL: {
5075 const label_statement_t *const label_stmt = &stmt->label;
5076 if (label_stmt->statement != NULL) {
5077 count += count_decls_in_stmts(label_stmt->statement);
5082 case STATEMENT_WHILE: {
5083 const while_statement_t *const while_stmt = &stmt->whiles;
5084 count += count_decls_in_expression(while_stmt->condition);
5085 count += count_decls_in_stmts(while_stmt->body);
5089 case STATEMENT_DO_WHILE: {
5090 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
5091 count += count_decls_in_expression(do_while_stmt->condition);
5092 count += count_decls_in_stmts(do_while_stmt->body);
5096 case STATEMENT_FOR: {
5097 const for_statement_t *const for_stmt = &stmt->fors;
5098 count += count_local_declarations(for_stmt->scope.declarations, NULL);
5099 count += count_decls_in_expression(for_stmt->initialisation);
5100 count += count_decls_in_expression(for_stmt->condition);
5101 count += count_decls_in_expression(for_stmt->step);
5102 count += count_decls_in_stmts(for_stmt->body);
5106 case STATEMENT_CASE_LABEL: {
5107 const case_label_statement_t *label = &stmt->case_label;
5108 count += count_decls_in_expression(label->expression);
5109 if (label->statement != NULL) {
5110 count += count_decls_in_stmts(label->statement);
5116 case STATEMENT_BREAK:
5117 case STATEMENT_CONTINUE:
5120 case STATEMENT_EXPRESSION: {
5121 const expression_statement_t *expr_stmt = &stmt->expression;
5122 count += count_decls_in_expression(expr_stmt->expression);
5126 case STATEMENT_GOTO:
5127 case STATEMENT_LEAVE:
5128 case STATEMENT_INVALID:
5131 case STATEMENT_RETURN: {
5132 const return_statement_t *ret_stmt = &stmt->returns;
5133 count += count_decls_in_expression(ret_stmt->value);
5137 case STATEMENT_MS_TRY: {
5138 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5139 count += count_decls_in_stmts(try_stmt->try_statement);
5140 if (try_stmt->except_expression != NULL)
5141 count += count_decls_in_expression(try_stmt->except_expression);
5142 count += count_decls_in_stmts(try_stmt->final_statement);
5150 static int get_function_n_local_vars(declaration_t *declaration)
5154 /* count parameters */
5155 count += count_local_declarations(declaration->scope.declarations, NULL);
5157 /* count local variables declared in body */
5158 count += count_decls_in_stmts(declaration->init.statement);
5163 static void initialize_function_parameters(declaration_t *declaration)
5165 ir_graph *irg = current_ir_graph;
5166 ir_node *args = get_irg_args(irg);
5167 ir_node *start_block = get_irg_start_block(irg);
5168 ir_type *function_irtype = get_ir_type(declaration->type);
5171 declaration_t *parameter = declaration->scope.declarations;
5172 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5173 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5174 type_t *type = skip_typeref(parameter->type);
5176 bool needs_entity = parameter->address_taken;
5177 assert(!is_type_array(type));
5178 if (is_type_compound(type)) {
5179 needs_entity = true;
5183 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5184 ident *id = new_id_from_str(parameter->symbol->string);
5185 set_entity_ident(entity, id);
5187 parameter->declaration_kind
5188 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5189 parameter->v.entity = entity;
5193 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5194 ir_mode *param_mode = get_type_mode(param_irtype);
5197 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5199 ir_mode *mode = get_ir_mode(type);
5200 value = create_conv(NULL, value, mode);
5201 value = do_strict_conv(NULL, value);
5203 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5204 parameter->v.value_number = next_value_number_function;
5205 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5206 ++next_value_number_function;
5208 set_value(parameter->v.value_number, value);
5213 * Handle additional decl modifiers for IR-graphs
5215 * @param irg the IR-graph
5216 * @param dec_modifiers additional modifiers
5218 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5220 if (decl_modifiers & DM_NORETURN) {
5221 /* TRUE if the declaration includes the Microsoft
5222 __declspec(noreturn) specifier. */
5223 set_irg_additional_property(irg, mtp_property_noreturn);
5225 if (decl_modifiers & DM_NOTHROW) {
5226 /* TRUE if the declaration includes the Microsoft
5227 __declspec(nothrow) specifier. */
5228 set_irg_additional_property(irg, mtp_property_nothrow);
5230 if (decl_modifiers & DM_NAKED) {
5231 /* TRUE if the declaration includes the Microsoft
5232 __declspec(naked) specifier. */
5233 set_irg_additional_property(irg, mtp_property_naked);
5235 if (decl_modifiers & DM_FORCEINLINE) {
5236 /* TRUE if the declaration includes the
5237 Microsoft __forceinline specifier. */
5238 set_irg_inline_property(irg, irg_inline_forced);
5240 if (decl_modifiers & DM_NOINLINE) {
5241 /* TRUE if the declaration includes the Microsoft
5242 __declspec(noinline) specifier. */
5243 set_irg_inline_property(irg, irg_inline_forbidden);
5247 static void add_function_pointer(ir_type *segment, ir_entity *method,
5248 const char *unique_template)
5250 ir_type *method_type = get_entity_type(method);
5251 ident *id = id_unique(unique_template);
5252 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5254 ident *ide = id_unique(unique_template);
5255 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5256 ir_graph *irg = get_const_code_irg();
5257 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5260 set_entity_compiler_generated(ptr, 1);
5261 set_entity_variability(ptr, variability_constant);
5262 set_atomic_ent_value(ptr, val);
5266 * Create code for a function.
5268 static void create_function(declaration_t *declaration)
5270 ir_entity *function_entity = get_function_entity(declaration);
5272 if (declaration->init.statement == NULL)
5275 if (declaration->modifiers & DM_CONSTRUCTOR) {
5276 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5277 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5279 if (declaration->modifiers & DM_DESTRUCTOR) {
5280 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5281 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5284 current_function_decl = declaration;
5285 current_function_name = NULL;
5286 current_funcsig = NULL;
5288 assert(imature_blocks == NULL);
5289 imature_blocks = NEW_ARR_F(ir_node*, 0);
5291 int n_local_vars = get_function_n_local_vars(declaration);
5292 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5294 set_irg_fp_model(irg, firm_opt.fp_model);
5295 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5296 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5298 ir_node *first_block = get_cur_block();
5300 /* set inline flags */
5301 if (declaration->is_inline)
5302 set_irg_inline_property(irg, irg_inline_recomended);
5303 handle_decl_modifier_irg(irg, declaration->modifiers);
5305 next_value_number_function = 0;
5306 initialize_function_parameters(declaration);
5308 statement_to_firm(declaration->init.statement);
5310 ir_node *end_block = get_irg_end_block(irg);
5312 /* do we have a return statement yet? */
5313 if (get_cur_block() != NULL) {
5314 type_t *type = skip_typeref(declaration->type);
5315 assert(is_type_function(type));
5316 const function_type_t *func_type = &type->function;
5317 const type_t *return_type
5318 = skip_typeref(func_type->return_type);
5321 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5322 ret = new_Return(get_store(), 0, NULL);
5325 if (is_type_scalar(return_type)) {
5326 mode = get_ir_mode(func_type->return_type);
5332 /* ยง5.1.2.2.3 main implicitly returns 0 */
5333 if (strcmp(declaration->symbol->string, "main") == 0) {
5334 in[0] = new_Const(mode, get_mode_null(mode));
5336 in[0] = new_Unknown(mode);
5338 ret = new_Return(get_store(), 1, in);
5340 add_immBlock_pred(end_block, ret);
5343 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
5344 mature_immBlock(imature_blocks[i]);
5346 DEL_ARR_F(imature_blocks);
5347 imature_blocks = NULL;
5349 mature_immBlock(first_block);
5350 mature_immBlock(end_block);
5352 irg_finalize_cons(irg);
5354 /* finalize the frame type */
5355 ir_type *frame_type = get_irg_frame_type(irg);
5356 int n = get_compound_n_members(frame_type);
5359 for(int i = 0; i < n; ++i) {
5360 ir_entity *entity = get_compound_member(frame_type, i);
5361 ir_type *entity_type = get_entity_type(entity);
5363 int align = get_type_alignment_bytes(entity_type);
5364 if (align > align_all)
5368 misalign = offset % align;
5370 offset += align - misalign;
5374 set_entity_offset(entity, offset);
5375 offset += get_type_size_bytes(entity_type);
5377 set_type_size_bytes(frame_type, offset);
5378 set_type_alignment_bytes(frame_type, align_all);
5383 static void scope_to_firm(scope_t *scope)
5385 /* first pass: create declarations */
5386 declaration_t *declaration = scope->declarations;
5387 for( ; declaration != NULL; declaration = declaration->next) {
5388 if (declaration->namespc != NAMESPACE_NORMAL)
5390 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5391 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5393 if (declaration->symbol == NULL)
5396 type_t *type = skip_typeref(declaration->type);
5397 if (is_type_function(type)) {
5398 get_function_entity(declaration);
5400 create_global_variable(declaration);
5404 /* second pass: create code/initializers */
5405 declaration = scope->declarations;
5406 for( ; declaration != NULL; declaration = declaration->next) {
5407 if (declaration->namespc != NAMESPACE_NORMAL)
5409 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5410 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5412 if (declaration->symbol == NULL)
5415 type_t *type = declaration->type;
5416 if (type->kind == TYPE_FUNCTION) {
5417 create_function(declaration);
5419 assert(declaration->declaration_kind
5420 == DECLARATION_KIND_GLOBAL_VARIABLE);
5421 current_ir_graph = get_const_code_irg();
5422 create_declaration_initializer(declaration);
5427 static void set_be_option(const char *option)
5429 int res = firm_be_option(option);
5433 void init_ast2firm(void)
5435 obstack_init(&asm_obst);
5436 init_atomic_modes();
5438 id_underscore = new_id_from_chars("_", 1);
5439 id_imp = new_id_from_chars("__imp_", 6);
5441 /* OS option must be set to the backend */
5442 switch (firm_opt.os_support) {
5443 case OS_SUPPORT_MINGW:
5444 create_ld_ident = create_ld_ident_win32;
5445 set_be_option("ia32-gasmode=mingw");
5447 case OS_SUPPORT_LINUX:
5448 create_ld_ident = create_ld_ident_linux_elf;
5449 set_be_option("ia32-gasmode=elf");
5451 case OS_SUPPORT_MACHO:
5452 create_ld_ident = create_ld_ident_macho;
5453 set_be_option("ia32-gasmode=macho");
5454 set_be_option("ia32-stackalign=4");
5455 set_be_option("pic");
5459 /* create idents for all known runtime functions */
5460 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5461 rts_idents[i] = new_id_from_str(rts_data[i].name);
5464 entitymap_init(&entitymap);
5467 static void init_ir_types(void)
5469 static int ir_types_initialized = 0;
5470 if (ir_types_initialized)
5472 ir_types_initialized = 1;
5474 ir_type_int = get_ir_type(type_int);
5475 ir_type_const_char = get_ir_type(type_const_char);
5476 ir_type_wchar_t = get_ir_type(type_wchar_t);
5477 ir_type_void = get_ir_type(type_void);
5480 void exit_ast2firm(void)
5482 entitymap_destroy(&entitymap);
5483 obstack_free(&asm_obst, NULL);
5486 static void global_asm_to_firm(statement_t *s)
5488 for (; s != NULL; s = s->base.next) {
5489 assert(s->kind == STATEMENT_ASM);
5491 char const *const text = s->asms.asm_text.begin;
5492 size_t size = s->asms.asm_text.size;
5494 /* skip the last \0 */
5495 if (text[size - 1] == '\0')
5498 ident *const id = new_id_from_chars(text, size);
5503 void translation_unit_to_firm(translation_unit_t *unit)
5505 /* just to be sure */
5506 continue_label = NULL;
5508 current_switch_cond = NULL;
5512 scope_to_firm(&unit->scope);
5513 global_asm_to_firm(unit->global_asm);
5515 current_ir_graph = NULL;