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 void 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 *left_addr = expression_to_addr(left_expr);
2315 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2316 ir_node *right = expression_to_firm(expression->right);
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 return expression_to_firm(expression->true_expression);
2616 return expression_to_firm(expression->false_expression);
2620 ir_node *cur_block = get_cur_block();
2622 /* create the true block */
2623 ir_node *true_block = new_immBlock();
2625 ir_node *true_val = expression_to_firm(expression->true_expression);
2626 ir_node *true_jmp = new_Jmp();
2628 /* create the false block */
2629 ir_node *false_block = new_immBlock();
2631 ir_node *false_val = expression_to_firm(expression->false_expression);
2632 ir_node *false_jmp = new_Jmp();
2634 /* create the condition evaluation */
2635 set_cur_block(cur_block);
2636 create_condition_evaluation(expression->condition, true_block, false_block);
2637 mature_immBlock(true_block);
2638 mature_immBlock(false_block);
2640 /* create the common block */
2641 ir_node *common_block = new_immBlock();
2642 add_immBlock_pred(common_block, true_jmp);
2643 add_immBlock_pred(common_block, false_jmp);
2644 mature_immBlock(common_block);
2646 /* TODO improve static semantics, so either both or no values are NULL */
2647 if (true_val == NULL || false_val == NULL)
2650 ir_node *in[2] = { true_val, false_val };
2651 ir_mode *mode = get_irn_mode(true_val);
2652 assert(get_irn_mode(false_val) == mode);
2653 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2659 * Returns an IR-node representing the address of a field.
2661 static ir_node *select_addr(const select_expression_t *expression)
2663 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2665 ir_node *compound_addr = expression_to_firm(expression->compound);
2667 /* make sure the type is constructed */
2668 type_t *type = skip_typeref(expression->compound->base.type);
2669 if (is_type_pointer(type)) {
2670 type = type->pointer.points_to;
2672 (void) get_ir_type(type);
2674 declaration_t *entry = expression->compound_entry;
2675 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2676 ir_entity *entity = entry->v.entity;
2678 assert(entity != NULL);
2680 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2685 static ir_node *select_to_firm(const select_expression_t *expression)
2687 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2688 ir_node *addr = select_addr(expression);
2689 type_t *type = revert_automatic_type_conversion(
2690 (const expression_t*) expression);
2691 type = skip_typeref(type);
2693 declaration_t *entry = expression->compound_entry;
2694 type_t *entry_type = skip_typeref(entry->type);
2696 if (entry_type->kind == TYPE_BITFIELD) {
2697 return bitfield_extract_to_firm(expression, addr);
2700 return deref_address(dbgi, type, addr);
2703 /* Values returned by __builtin_classify_type. */
2704 typedef enum gcc_type_class
2710 enumeral_type_class,
2713 reference_type_class,
2717 function_type_class,
2728 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2730 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2736 const atomic_type_t *const atomic_type = &type->atomic;
2737 switch (atomic_type->akind) {
2738 /* should not be reached */
2739 case ATOMIC_TYPE_INVALID:
2743 /* gcc cannot do that */
2744 case ATOMIC_TYPE_VOID:
2745 tc = void_type_class;
2748 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2749 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2750 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2751 case ATOMIC_TYPE_SHORT:
2752 case ATOMIC_TYPE_USHORT:
2753 case ATOMIC_TYPE_INT:
2754 case ATOMIC_TYPE_UINT:
2755 case ATOMIC_TYPE_LONG:
2756 case ATOMIC_TYPE_ULONG:
2757 case ATOMIC_TYPE_LONGLONG:
2758 case ATOMIC_TYPE_ULONGLONG:
2759 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2760 tc = integer_type_class;
2763 case ATOMIC_TYPE_FLOAT:
2764 case ATOMIC_TYPE_DOUBLE:
2765 case ATOMIC_TYPE_LONG_DOUBLE:
2766 tc = real_type_class;
2769 panic("Unexpected atomic type in classify_type_to_firm().");
2772 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2773 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2774 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2775 case TYPE_ARRAY: /* gcc handles this as pointer */
2776 case TYPE_FUNCTION: /* gcc handles this as pointer */
2777 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2778 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2779 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2781 /* gcc handles this as integer */
2782 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2785 /* typedef/typeof should be skipped already */
2792 panic("unexpected TYPE classify_type_to_firm().");
2795 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2796 ir_mode *const mode = mode_int;
2797 tarval *const tv = new_tarval_from_long(tc, mode);
2798 return new_d_Const(dbgi, mode, tv);
2801 static ir_node *function_name_to_firm(
2802 const funcname_expression_t *const expr)
2804 switch(expr->kind) {
2805 case FUNCNAME_FUNCTION:
2806 case FUNCNAME_PRETTY_FUNCTION:
2807 case FUNCNAME_FUNCDNAME:
2808 if (current_function_name == NULL) {
2809 const source_position_t *const src_pos = &expr->base.source_position;
2810 const char *const name = current_function_decl->symbol->string;
2811 const string_t string = { name, strlen(name) + 1 };
2812 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2814 return current_function_name;
2815 case FUNCNAME_FUNCSIG:
2816 if (current_funcsig == NULL) {
2817 const source_position_t *const src_pos = &expr->base.source_position;
2818 ir_entity *ent = get_irg_entity(current_ir_graph);
2819 const char *const name = get_entity_ld_name(ent);
2820 const string_t string = { name, strlen(name) + 1 };
2821 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2823 return current_funcsig;
2825 panic("Unsupported function name");
2828 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2830 statement_t *statement = expr->statement;
2832 assert(statement->kind == STATEMENT_COMPOUND);
2833 return compound_statement_to_firm(&statement->compound);
2836 static ir_node *va_start_expression_to_firm(
2837 const va_start_expression_t *const expr)
2839 ir_type *const method_type = get_ir_type(current_function_decl->type);
2840 int const n = get_method_n_params(method_type) - 1;
2841 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2842 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2843 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2844 ir_node *const no_mem = new_NoMem();
2845 ir_node *const arg_sel =
2846 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2848 ir_node *const cnst = get_type_size(expr->parameter->type);
2849 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2850 set_value_for_expression(expr->ap, add);
2855 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2857 type_t *const type = expr->base.type;
2858 expression_t *const ap_expr = expr->ap;
2859 ir_node *const ap_addr = expression_to_addr(ap_expr);
2860 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2861 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2862 ir_node *const res = deref_address(dbgi, type, ap);
2864 ir_node *const cnst = get_type_size(expr->base.type);
2865 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2867 set_value_for_expression_addr(ap_expr, add, ap_addr);
2872 static ir_node *dereference_addr(const unary_expression_t *const expression)
2874 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2875 return expression_to_firm(expression->value);
2879 * Returns a IR-node representing an lvalue of the given expression.
2881 static ir_node *expression_to_addr(const expression_t *expression)
2883 switch(expression->kind) {
2884 case EXPR_REFERENCE:
2885 return reference_addr(&expression->reference);
2886 case EXPR_ARRAY_ACCESS:
2887 return array_access_addr(&expression->array_access);
2889 return select_addr(&expression->select);
2891 return call_expression_to_firm(&expression->call);
2892 case EXPR_UNARY_DEREFERENCE: {
2893 return dereference_addr(&expression->unary);
2898 panic("trying to get address of non-lvalue");
2901 static ir_node *builtin_constant_to_firm(
2902 const builtin_constant_expression_t *expression)
2904 ir_mode *mode = get_ir_mode(expression->base.type);
2907 if (is_constant_expression(expression->value)) {
2912 return new_Const_long(mode, v);
2915 static ir_node *builtin_prefetch_to_firm(
2916 const builtin_prefetch_expression_t *expression)
2918 ir_node *adr = expression_to_firm(expression->adr);
2919 /* no Firm support for prefetch yet */
2925 * creates firm nodes for an expression. The difference between this function
2926 * and expression_to_firm is, that this version might produce mode_b nodes
2927 * instead of mode_Is.
2929 static ir_node *_expression_to_firm(const expression_t *expression)
2932 if (!constant_folding) {
2933 assert(!expression->base.transformed);
2934 ((expression_t*) expression)->base.transformed = true;
2938 switch(expression->kind) {
2939 case EXPR_CHARACTER_CONSTANT:
2940 return character_constant_to_firm(&expression->conste);
2941 case EXPR_WIDE_CHARACTER_CONSTANT:
2942 return wide_character_constant_to_firm(&expression->conste);
2944 return const_to_firm(&expression->conste);
2945 case EXPR_STRING_LITERAL:
2946 return string_literal_to_firm(&expression->string);
2947 case EXPR_WIDE_STRING_LITERAL:
2948 return wide_string_literal_to_firm(&expression->wide_string);
2949 case EXPR_REFERENCE:
2950 return reference_expression_to_firm(&expression->reference);
2952 return call_expression_to_firm(&expression->call);
2954 return unary_expression_to_firm(&expression->unary);
2956 return binary_expression_to_firm(&expression->binary);
2957 case EXPR_ARRAY_ACCESS:
2958 return array_access_to_firm(&expression->array_access);
2960 return sizeof_to_firm(&expression->typeprop);
2962 return alignof_to_firm(&expression->typeprop);
2963 case EXPR_CONDITIONAL:
2964 return conditional_to_firm(&expression->conditional);
2966 return select_to_firm(&expression->select);
2967 case EXPR_CLASSIFY_TYPE:
2968 return classify_type_to_firm(&expression->classify_type);
2970 return function_name_to_firm(&expression->funcname);
2971 case EXPR_STATEMENT:
2972 return statement_expression_to_firm(&expression->statement);
2974 return va_start_expression_to_firm(&expression->va_starte);
2976 return va_arg_expression_to_firm(&expression->va_arge);
2977 case EXPR_BUILTIN_SYMBOL:
2978 panic("unimplemented expression found");
2979 case EXPR_BUILTIN_CONSTANT_P:
2980 return builtin_constant_to_firm(&expression->builtin_constant);
2981 case EXPR_BUILTIN_PREFETCH:
2982 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2984 return offsetof_to_firm(&expression->offsetofe);
2985 case EXPR_COMPOUND_LITERAL:
2986 return compound_literal_to_firm(&expression->compound_literal);
2992 panic("invalid expression found");
2995 static bool produces_mode_b(const expression_t *expression)
2997 switch (expression->kind) {
2998 case EXPR_BINARY_EQUAL:
2999 case EXPR_BINARY_NOTEQUAL:
3000 case EXPR_BINARY_LESS:
3001 case EXPR_BINARY_LESSEQUAL:
3002 case EXPR_BINARY_GREATER:
3003 case EXPR_BINARY_GREATEREQUAL:
3004 case EXPR_BINARY_ISGREATER:
3005 case EXPR_BINARY_ISGREATEREQUAL:
3006 case EXPR_BINARY_ISLESS:
3007 case EXPR_BINARY_ISLESSEQUAL:
3008 case EXPR_BINARY_ISLESSGREATER:
3009 case EXPR_BINARY_ISUNORDERED:
3010 case EXPR_UNARY_NOT:
3013 case EXPR_BINARY_BUILTIN_EXPECT:
3014 return produces_mode_b(expression->binary.left);
3015 case EXPR_BINARY_COMMA:
3016 return produces_mode_b(expression->binary.right);
3023 static ir_node *expression_to_firm(const expression_t *expression)
3025 if (!produces_mode_b(expression)) {
3026 ir_node *res = _expression_to_firm(expression);
3027 assert(res == NULL || get_irn_mode(res) != mode_b);
3031 if (is_constant_expression(expression)) {
3032 ir_node *res = _expression_to_firm(expression);
3033 ir_mode *mode = get_ir_mode(expression->base.type);
3034 assert(is_Const(res));
3035 if (is_Const_null(res)) {
3036 return new_Const_long(mode, 0);
3038 return new_Const_long(mode, 1);
3042 /* we have to produce a 0/1 from the mode_b expression */
3043 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3044 return produce_condition_result(expression, dbgi);
3047 static ir_node *expression_to_modeb(const expression_t *expression)
3049 ir_node *res = _expression_to_firm(expression);
3050 res = create_conv(NULL, res, mode_b);
3056 * create a short-circuit expression evaluation that tries to construct
3057 * efficient control flow structures for &&, || and ! expressions
3059 static void create_condition_evaluation(const expression_t *expression,
3060 ir_node *true_block,
3061 ir_node *false_block)
3063 switch(expression->kind) {
3064 case EXPR_UNARY_NOT: {
3065 const unary_expression_t *unary_expression = &expression->unary;
3066 create_condition_evaluation(unary_expression->value, false_block,
3070 case EXPR_BINARY_LOGICAL_AND: {
3071 const binary_expression_t *binary_expression = &expression->binary;
3073 ir_node *cur_block = get_cur_block();
3074 ir_node *extra_block = new_immBlock();
3075 set_cur_block(cur_block);
3076 create_condition_evaluation(binary_expression->left, extra_block,
3078 mature_immBlock(extra_block);
3079 set_cur_block(extra_block);
3080 create_condition_evaluation(binary_expression->right, true_block,
3084 case EXPR_BINARY_LOGICAL_OR: {
3085 const binary_expression_t *binary_expression = &expression->binary;
3087 ir_node *cur_block = get_cur_block();
3088 ir_node *extra_block = new_immBlock();
3089 set_cur_block(cur_block);
3090 create_condition_evaluation(binary_expression->left, true_block,
3092 mature_immBlock(extra_block);
3093 set_cur_block(extra_block);
3094 create_condition_evaluation(binary_expression->right, true_block,
3102 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3103 ir_node *condition = expression_to_modeb(expression);
3104 ir_node *cond = new_d_Cond(dbgi, condition);
3105 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3106 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3108 /* set branch prediction info based on __builtin_expect */
3109 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3110 long cnst = fold_constant(expression->binary.right);
3111 cond_jmp_predicate pred;
3114 pred = COND_JMP_PRED_FALSE;
3116 pred = COND_JMP_PRED_TRUE;
3118 set_Cond_jmp_pred(cond, pred);
3121 add_immBlock_pred(true_block, true_proj);
3122 if (false_block != NULL) {
3123 add_immBlock_pred(false_block, false_proj);
3126 set_cur_block(NULL);
3131 static void create_declaration_entity(declaration_t *declaration,
3132 declaration_kind_t declaration_kind,
3133 ir_type *parent_type)
3135 type_t *const type = skip_typeref(declaration->type);
3136 if (is_type_function(type)) {
3137 (void) get_function_entity(declaration);
3141 ident *const id = new_id_from_str(declaration->symbol->string);
3142 ir_type *const irtype = get_ir_type(type);
3143 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3144 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3146 declaration->declaration_kind = (unsigned char) declaration_kind;
3147 declaration->v.entity = entity;
3148 set_entity_variability(entity, variability_uninitialized);
3149 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3150 if (parent_type == get_tls_type())
3151 set_entity_allocation(entity, allocation_automatic);
3152 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3153 set_entity_allocation(entity, allocation_static);
3155 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3156 set_entity_volatility(entity, volatility_is_volatile);
3161 typedef struct type_path_entry_t type_path_entry_t;
3162 struct type_path_entry_t {
3164 ir_initializer_t *initializer;
3166 declaration_t *compound_entry;
3169 typedef struct type_path_t type_path_t;
3170 struct type_path_t {
3171 type_path_entry_t *path;
3176 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3178 size_t len = ARR_LEN(path->path);
3180 for(size_t i = 0; i < len; ++i) {
3181 const type_path_entry_t *entry = & path->path[i];
3183 type_t *type = skip_typeref(entry->type);
3184 if (is_type_compound(type)) {
3185 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3186 } else if (is_type_array(type)) {
3187 fprintf(stderr, "[%zd]", entry->index);
3189 fprintf(stderr, "-INVALID-");
3192 fprintf(stderr, " (");
3193 print_type(path->top_type);
3194 fprintf(stderr, ")");
3197 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3199 size_t len = ARR_LEN(path->path);
3201 return & path->path[len-1];
3204 static type_path_entry_t *append_to_type_path(type_path_t *path)
3206 size_t len = ARR_LEN(path->path);
3207 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3209 type_path_entry_t *result = & path->path[len];
3210 memset(result, 0, sizeof(result[0]));
3214 static size_t get_compound_size(const compound_type_t *type)
3216 declaration_t *declaration = type->declaration;
3217 declaration_t *member = declaration->scope.declarations;
3219 for( ; member != NULL; member = member->next) {
3222 /* TODO: cache results? */
3227 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3229 type_t *orig_top_type = path->top_type;
3230 type_t *top_type = skip_typeref(orig_top_type);
3232 assert(is_type_compound(top_type) || is_type_array(top_type));
3234 if (ARR_LEN(path->path) == 0) {
3237 type_path_entry_t *top = get_type_path_top(path);
3238 ir_initializer_t *initializer = top->initializer;
3239 return get_initializer_compound_value(initializer, top->index);
3243 static void descend_into_subtype(type_path_t *path)
3245 type_t *orig_top_type = path->top_type;
3246 type_t *top_type = skip_typeref(orig_top_type);
3248 assert(is_type_compound(top_type) || is_type_array(top_type));
3250 ir_initializer_t *initializer = get_initializer_entry(path);
3252 type_path_entry_t *top = append_to_type_path(path);
3253 top->type = top_type;
3257 if (is_type_compound(top_type)) {
3258 declaration_t *declaration = top_type->compound.declaration;
3259 declaration_t *entry = declaration->scope.declarations;
3261 top->compound_entry = entry;
3263 len = get_compound_size(&top_type->compound);
3265 path->top_type = entry->type;
3267 assert(is_type_array(top_type));
3268 assert(top_type->array.size > 0);
3271 path->top_type = top_type->array.element_type;
3272 len = top_type->array.size;
3274 if (initializer == NULL
3275 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3276 initializer = create_initializer_compound(len);
3277 /* we have to set the entry at the 2nd latest path entry... */
3278 size_t path_len = ARR_LEN(path->path);
3279 assert(path_len >= 1);
3281 type_path_entry_t *entry = & path->path[path_len-2];
3282 ir_initializer_t *tinitializer = entry->initializer;
3283 set_initializer_compound_value(tinitializer, entry->index,
3287 top->initializer = initializer;
3290 static void ascend_from_subtype(type_path_t *path)
3292 type_path_entry_t *top = get_type_path_top(path);
3294 path->top_type = top->type;
3296 size_t len = ARR_LEN(path->path);
3297 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3300 static void walk_designator(type_path_t *path, const designator_t *designator)
3302 /* designators start at current object type */
3303 ARR_RESIZE(type_path_entry_t, path->path, 1);
3305 for( ; designator != NULL; designator = designator->next) {
3306 type_path_entry_t *top = get_type_path_top(path);
3307 type_t *orig_type = top->type;
3308 type_t *type = skip_typeref(orig_type);
3310 if (designator->symbol != NULL) {
3311 assert(is_type_compound(type));
3313 symbol_t *symbol = designator->symbol;
3315 declaration_t *declaration = type->compound.declaration;
3316 declaration_t *iter = declaration->scope.declarations;
3317 for( ; iter != NULL; iter = iter->next, ++index) {
3318 if (iter->symbol == symbol) {
3322 assert(iter != NULL);
3324 top->type = orig_type;
3325 top->compound_entry = iter;
3327 orig_type = iter->type;
3329 expression_t *array_index = designator->array_index;
3330 assert(designator->array_index != NULL);
3331 assert(is_type_array(type));
3332 assert(is_type_valid(array_index->base.type));
3334 long index = fold_constant(array_index);
3337 if (type->array.size_constant == 1) {
3338 long array_size = type->array.size;
3339 assert(index < array_size);
3343 top->type = orig_type;
3344 top->index = (size_t) index;
3345 orig_type = type->array.element_type;
3347 path->top_type = orig_type;
3349 if (designator->next != NULL) {
3350 descend_into_subtype(path);
3354 path->invalid = false;
3357 static void advance_current_object(type_path_t *path)
3359 if (path->invalid) {
3360 /* TODO: handle this... */
3361 panic("invalid initializer in ast2firm (excessive elements)");
3365 type_path_entry_t *top = get_type_path_top(path);
3367 type_t *type = skip_typeref(top->type);
3368 if (is_type_union(type)) {
3369 top->compound_entry = NULL;
3370 } else if (is_type_struct(type)) {
3371 declaration_t *entry = top->compound_entry;
3374 entry = entry->next;
3375 top->compound_entry = entry;
3376 if (entry != NULL) {
3377 path->top_type = entry->type;
3381 assert(is_type_array(type));
3384 if (!type->array.size_constant || top->index < type->array.size) {
3389 /* we're past the last member of the current sub-aggregate, try if we
3390 * can ascend in the type hierarchy and continue with another subobject */
3391 size_t len = ARR_LEN(path->path);
3394 ascend_from_subtype(path);
3395 advance_current_object(path);
3397 path->invalid = true;
3402 static ir_initializer_t *create_ir_initializer(
3403 const initializer_t *initializer, type_t *type);
3405 static ir_initializer_t *create_ir_initializer_value(
3406 const initializer_value_t *initializer)
3408 if (is_type_compound(initializer->value->base.type)) {
3409 panic("initializer creation for compounds not implemented yet");
3411 ir_node *value = expression_to_firm(initializer->value);
3412 return create_initializer_const(value);
3415 static ir_initializer_t *create_ir_initializer_list(
3416 const initializer_list_t *initializer, type_t *type)
3419 memset(&path, 0, sizeof(path));
3420 path.top_type = type;
3421 path.path = NEW_ARR_F(type_path_entry_t, 0);
3423 descend_into_subtype(&path);
3425 for(size_t i = 0; i < initializer->len; ++i) {
3426 const initializer_t *sub_initializer = initializer->initializers[i];
3428 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3429 walk_designator(&path, sub_initializer->designator.designator);
3433 if (sub_initializer->kind == INITIALIZER_VALUE) {
3434 /* we might have to descend into types until we're at a scalar
3437 type_t *orig_top_type = path.top_type;
3438 type_t *top_type = skip_typeref(orig_top_type);
3440 if (is_type_scalar(top_type))
3442 descend_into_subtype(&path);
3446 ir_initializer_t *sub_irinitializer
3447 = create_ir_initializer(sub_initializer, path.top_type);
3449 size_t path_len = ARR_LEN(path.path);
3450 assert(path_len >= 1);
3451 type_path_entry_t *entry = & path.path[path_len-1];
3452 ir_initializer_t *tinitializer = entry->initializer;
3453 set_initializer_compound_value(tinitializer, entry->index,
3456 advance_current_object(&path);
3459 assert(ARR_LEN(path.path) >= 1);
3460 ir_initializer_t *result = path.path[0].initializer;
3461 DEL_ARR_F(path.path);
3466 static ir_initializer_t *create_ir_initializer_string(
3467 const initializer_string_t *initializer, type_t *type)
3469 type = skip_typeref(type);
3471 size_t string_len = initializer->string.size;
3472 assert(type->kind == TYPE_ARRAY);
3473 assert(type->array.size_constant);
3474 size_t len = type->array.size;
3475 ir_initializer_t *irinitializer = create_initializer_compound(len);
3477 const char *string = initializer->string.begin;
3478 ir_mode *mode = get_ir_mode(type->array.element_type);
3480 for(size_t i = 0; i < len; ++i) {
3485 tarval *tv = new_tarval_from_long(c, mode);
3486 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3488 set_initializer_compound_value(irinitializer, i, char_initializer);
3491 return irinitializer;
3494 static ir_initializer_t *create_ir_initializer_wide_string(
3495 const initializer_wide_string_t *initializer, type_t *type)
3497 size_t string_len = initializer->string.size;
3498 assert(type->kind == TYPE_ARRAY);
3499 assert(type->array.size_constant);
3500 size_t len = type->array.size;
3501 ir_initializer_t *irinitializer = create_initializer_compound(len);
3503 const wchar_rep_t *string = initializer->string.begin;
3504 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3506 for(size_t i = 0; i < len; ++i) {
3508 if (i < string_len) {
3511 tarval *tv = new_tarval_from_long(c, mode);
3512 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3514 set_initializer_compound_value(irinitializer, i, char_initializer);
3517 return irinitializer;
3520 static ir_initializer_t *create_ir_initializer(
3521 const initializer_t *initializer, type_t *type)
3523 switch(initializer->kind) {
3524 case INITIALIZER_STRING:
3525 return create_ir_initializer_string(&initializer->string, type);
3527 case INITIALIZER_WIDE_STRING:
3528 return create_ir_initializer_wide_string(&initializer->wide_string,
3531 case INITIALIZER_LIST:
3532 return create_ir_initializer_list(&initializer->list, type);
3534 case INITIALIZER_VALUE:
3535 return create_ir_initializer_value(&initializer->value);
3537 case INITIALIZER_DESIGNATOR:
3538 panic("unexpected designator initializer found");
3540 panic("unknown initializer");
3543 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3546 if (is_atomic_type(type)) {
3547 ir_mode *mode = get_type_mode(type);
3548 tarval *zero = get_mode_null(mode);
3549 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3551 /* TODO: bitfields */
3552 ir_node *mem = get_store();
3553 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3554 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3557 assert(is_compound_type(type));
3560 if (is_Array_type(type)) {
3561 assert(has_array_upper_bound(type, 0));
3562 n_members = get_array_upper_bound_int(type, 0);
3564 n_members = get_compound_n_members(type);
3567 for(int i = 0; i < n_members; ++i) {
3570 if (is_Array_type(type)) {
3571 ir_entity *entity = get_array_element_entity(type);
3572 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3573 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3574 ir_node *in[1] = { cnst };
3575 irtype = get_array_element_type(type);
3576 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3578 ir_entity *member = get_compound_member(type, i);
3580 irtype = get_entity_type(member);
3581 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3584 create_dynamic_null_initializer(irtype, dbgi, addr);
3589 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3590 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3592 switch(get_initializer_kind(initializer)) {
3593 case IR_INITIALIZER_NULL: {
3594 create_dynamic_null_initializer(type, dbgi, base_addr);
3597 case IR_INITIALIZER_CONST: {
3598 ir_node *node = get_initializer_const_value(initializer);
3599 ir_mode *mode = get_irn_mode(node);
3600 assert(get_type_mode(type) == mode);
3602 /* TODO: bitfields... */
3603 ir_node *mem = get_store();
3604 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3605 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3609 case IR_INITIALIZER_TARVAL: {
3610 tarval *tv = get_initializer_tarval_value(initializer);
3611 ir_mode *mode = get_tarval_mode(tv);
3612 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3613 assert(get_type_mode(type) == mode);
3615 /* TODO: bitfields... */
3616 ir_node *mem = get_store();
3617 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3618 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3622 case IR_INITIALIZER_COMPOUND: {
3623 assert(is_compound_type(type));
3625 if (is_Array_type(type)) {
3626 assert(has_array_upper_bound(type, 0));
3627 n_members = get_array_upper_bound_int(type, 0);
3629 n_members = get_compound_n_members(type);
3632 if (get_initializer_compound_n_entries(initializer)
3633 != (unsigned) n_members)
3634 panic("initializer doesn't match compound type");
3636 for(int i = 0; i < n_members; ++i) {
3639 if (is_Array_type(type)) {
3640 ir_entity *entity = get_array_element_entity(type);
3641 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3642 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3643 ir_node *in[1] = { cnst };
3644 irtype = get_array_element_type(type);
3645 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3647 ir_entity *member = get_compound_member(type, i);
3649 irtype = get_entity_type(member);
3650 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3653 ir_initializer_t *sub_init
3654 = get_initializer_compound_value(initializer, i);
3656 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3662 panic("invalid IR_INITIALIZER found");
3665 static void create_dynamic_initializer(ir_initializer_t *initializer,
3666 dbg_info *dbgi, ir_entity *entity)
3668 ir_node *frame = get_local_frame(entity);
3669 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3670 ir_type *type = get_entity_type(entity);
3672 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3675 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3676 ir_entity *entity, type_t *type)
3678 ir_node *memory = get_store();
3679 ir_node *nomem = new_NoMem();
3680 ir_node *frame = get_irg_frame(current_ir_graph);
3681 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3683 if (initializer->kind == INITIALIZER_VALUE) {
3684 initializer_value_t *initializer_value = &initializer->value;
3686 ir_node *value = expression_to_firm(initializer_value->value);
3687 type = skip_typeref(type);
3688 assign_value(dbgi, addr, type, value);
3692 if (!is_constant_initializer(initializer)) {
3693 ir_initializer_t *irinitializer
3694 = create_ir_initializer(initializer, type);
3696 create_dynamic_initializer(irinitializer, dbgi, entity);
3700 /* create the ir_initializer */
3701 ir_graph *const old_current_ir_graph = current_ir_graph;
3702 current_ir_graph = get_const_code_irg();
3704 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3706 assert(current_ir_graph == get_const_code_irg());
3707 current_ir_graph = old_current_ir_graph;
3709 /* create a "template" entity which is copied to the entity on the stack */
3710 ident *const id = id_unique("initializer.%u");
3711 ir_type *const irtype = get_ir_type(type);
3712 ir_type *const global_type = get_glob_type();
3713 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3714 set_entity_ld_ident(init_entity, id);
3716 set_entity_variability(init_entity, variability_initialized);
3717 set_entity_visibility(init_entity, visibility_local);
3718 set_entity_allocation(init_entity, allocation_static);
3720 set_entity_initializer(init_entity, irinitializer);
3722 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3723 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3725 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3726 set_store(copyb_mem);
3729 static void create_initializer_local_variable_entity(declaration_t *declaration)
3731 initializer_t *initializer = declaration->init.initializer;
3732 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3733 ir_entity *entity = declaration->v.entity;
3734 type_t *type = declaration->type;
3735 create_local_initializer(initializer, dbgi, entity, type);
3738 static void create_declaration_initializer(declaration_t *declaration)
3740 initializer_t *initializer = declaration->init.initializer;
3741 if (initializer == NULL)
3744 declaration_kind_t declaration_kind
3745 = (declaration_kind_t) declaration->declaration_kind;
3746 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3747 create_initializer_local_variable_entity(declaration);
3751 type_t *type = skip_typeref(declaration->type);
3753 if (initializer->kind == INITIALIZER_VALUE) {
3754 initializer_value_t *initializer_value = &initializer->value;
3756 = get_dbg_info(&declaration->source_position);
3758 ir_node *value = expression_to_firm(initializer_value->value);
3759 value = do_strict_conv(dbgi, value);
3761 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3762 set_value(declaration->v.value_number, value);
3764 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3766 ir_entity *entity = declaration->v.entity;
3768 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3769 set_entity_variability(entity, variability_constant);
3771 set_entity_variability(entity, variability_initialized);
3773 set_atomic_ent_value(entity, value);
3776 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3777 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3779 ir_entity *entity = declaration->v.entity;
3780 ir_initializer_t *irinitializer
3781 = create_ir_initializer(initializer, type);
3783 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3784 set_entity_variability(entity, variability_constant);
3786 set_entity_variability(entity, variability_initialized);
3788 set_entity_initializer(entity, irinitializer);
3792 static void create_variable_length_array(declaration_t *declaration)
3794 /* initializers are not allowed for VLAs */
3795 assert(declaration->init.initializer == NULL);
3797 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3798 declaration->v.vla_base = NULL;
3800 /* TODO: record VLA somewhere so we create the free node when we leave
3804 static void allocate_variable_length_array(declaration_t *declaration)
3806 /* initializers are not allowed for VLAs */
3807 assert(declaration->init.initializer == NULL);
3808 assert(get_cur_block() != NULL);
3810 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3811 type_t *type = declaration->type;
3812 ir_type *el_type = get_ir_type(type->array.element_type);
3814 /* make sure size_node is calculated */
3815 get_type_size(type);
3816 ir_node *elems = type->array.size_node;
3817 ir_node *mem = get_store();
3818 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3820 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3821 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3824 assert(declaration->declaration_kind
3825 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3826 declaration->v.vla_base = addr;
3830 * Creates a Firm local variable from a declaration.
3832 static void create_local_variable(declaration_t *declaration)
3834 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3836 bool needs_entity = declaration->address_taken;
3837 type_t *type = skip_typeref(declaration->type);
3839 /* is it a variable length array? */
3840 if (is_type_array(type) && !type->array.size_constant) {
3841 create_variable_length_array(declaration);
3843 } else if (is_type_array(type) || is_type_compound(type)) {
3844 needs_entity = true;
3845 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3846 needs_entity = true;
3850 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3851 create_declaration_entity(declaration,
3852 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3855 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3856 declaration->v.value_number = next_value_number_function;
3857 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3858 ++next_value_number_function;
3862 static void create_local_static_variable(declaration_t *declaration)
3864 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3866 type_t *const type = skip_typeref(declaration->type);
3867 ir_type *const global_type = get_glob_type();
3868 ir_type *const irtype = get_ir_type(type);
3869 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3871 size_t l = strlen(declaration->symbol->string);
3872 char buf[l + sizeof(".%u")];
3873 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3874 ident *const id = id_unique(buf);
3876 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3878 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3879 set_entity_volatility(entity, volatility_is_volatile);
3882 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3883 declaration->v.entity = entity;
3884 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3885 set_entity_variability(entity, variability_uninitialized);
3886 set_entity_visibility(entity, visibility_local);
3887 set_entity_allocation(entity, allocation_static);
3889 ir_graph *const old_current_ir_graph = current_ir_graph;
3890 current_ir_graph = get_const_code_irg();
3892 create_declaration_initializer(declaration);
3894 assert(current_ir_graph == get_const_code_irg());
3895 current_ir_graph = old_current_ir_graph;
3900 static void return_statement_to_firm(return_statement_t *statement)
3902 if (get_cur_block() == NULL)
3905 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3906 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3911 if (get_method_n_ress(func_irtype) > 0) {
3912 ir_type *res_type = get_method_res_type(func_irtype, 0);
3914 if (statement->value != NULL) {
3915 ir_node *node = expression_to_firm(statement->value);
3916 node = do_strict_conv(dbgi, node);
3920 if (is_compound_type(res_type)) {
3923 mode = get_type_mode(res_type);
3925 in[0] = new_Unknown(mode);
3929 /* build return_value for its side effects */
3930 if (statement->value != NULL) {
3931 expression_to_firm(statement->value);
3936 ir_node *store = get_store();
3937 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3939 ir_node *end_block = get_irg_end_block(current_ir_graph);
3940 add_immBlock_pred(end_block, ret);
3942 set_cur_block(NULL);
3945 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3947 if (get_cur_block() == NULL)
3950 return expression_to_firm(statement->expression);
3953 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3955 declaration_t *declaration = compound->scope.declarations;
3956 for( ; declaration != NULL; declaration = declaration->next) {
3957 create_local_declaration(declaration);
3960 ir_node *result = NULL;
3961 statement_t *statement = compound->statements;
3962 for( ; statement != NULL; statement = statement->base.next) {
3963 if (statement->base.next == NULL
3964 && statement->kind == STATEMENT_EXPRESSION) {
3965 result = expression_statement_to_firm(
3966 &statement->expression);
3969 statement_to_firm(statement);
3975 static void create_global_variable(declaration_t *declaration)
3979 switch ((storage_class_tag_t)declaration->storage_class) {
3980 case STORAGE_CLASS_STATIC:
3981 vis = visibility_local;
3984 case STORAGE_CLASS_EXTERN:
3985 vis = visibility_external_allocated;
3988 case STORAGE_CLASS_NONE:
3989 vis = visibility_external_visible;
3992 case STORAGE_CLASS_THREAD:
3993 vis = visibility_external_visible;
3996 case STORAGE_CLASS_THREAD_EXTERN:
3997 vis = visibility_external_allocated;
4000 case STORAGE_CLASS_THREAD_STATIC:
4001 vis = visibility_local;
4005 var_type = get_tls_type();
4009 var_type = get_glob_type();
4013 create_declaration_entity(declaration,
4014 DECLARATION_KIND_GLOBAL_VARIABLE,
4016 if (!is_type_function(skip_typeref(declaration->type))) {
4017 set_entity_visibility(declaration->v.entity, vis);
4022 case STORAGE_CLASS_TYPEDEF:
4023 case STORAGE_CLASS_AUTO:
4024 case STORAGE_CLASS_REGISTER:
4025 case STORAGE_CLASS_ENUM_ENTRY:
4028 panic("Invalid storage class for global variable");
4031 static void create_local_declaration(declaration_t *declaration)
4033 if (declaration->namespc != NAMESPACE_NORMAL)
4035 /* construct type */
4036 (void) get_ir_type(declaration->type);
4037 if (declaration->symbol == NULL) {
4041 type_t *type = skip_typeref(declaration->type);
4043 switch ((storage_class_tag_t) declaration->storage_class) {
4044 case STORAGE_CLASS_STATIC:
4045 create_local_static_variable(declaration);
4047 case STORAGE_CLASS_EXTERN:
4048 create_global_variable(declaration);
4049 create_declaration_initializer(declaration);
4051 case STORAGE_CLASS_NONE:
4052 case STORAGE_CLASS_AUTO:
4053 case STORAGE_CLASS_REGISTER:
4054 if (is_type_function(type)) {
4055 if (declaration->init.statement != NULL) {
4056 panic("nested functions not supported yet");
4058 get_function_entity(declaration);
4061 create_local_variable(declaration);
4064 case STORAGE_CLASS_ENUM_ENTRY:
4065 /* should already be handled */
4066 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4068 case STORAGE_CLASS_TYPEDEF:
4069 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4071 case STORAGE_CLASS_THREAD:
4072 case STORAGE_CLASS_THREAD_EXTERN:
4073 case STORAGE_CLASS_THREAD_STATIC:
4076 panic("invalid storage class found");
4079 static void initialize_local_declaration(declaration_t *declaration)
4081 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4084 switch ((declaration_kind_t) declaration->declaration_kind) {
4085 case DECLARATION_KIND_LOCAL_VARIABLE:
4086 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4087 create_declaration_initializer(declaration);
4090 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4091 allocate_variable_length_array(declaration);
4094 case DECLARATION_KIND_LABEL_BLOCK:
4095 case DECLARATION_KIND_COMPOUND_MEMBER:
4096 case DECLARATION_KIND_GLOBAL_VARIABLE:
4097 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4098 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4099 case DECLARATION_KIND_FUNCTION:
4100 case DECLARATION_KIND_TYPE:
4101 case DECLARATION_KIND_ENUM_ENTRY:
4104 case DECLARATION_KIND_UNKNOWN:
4105 panic("can't initialize unknwon declaration");
4107 panic("invalid declaration kind");
4110 static void declaration_statement_to_firm(declaration_statement_t *statement)
4112 declaration_t *declaration = statement->declarations_begin;
4113 declaration_t *end = statement->declarations_end->next;
4114 for( ; declaration != end; declaration = declaration->next) {
4115 if (declaration->namespc != NAMESPACE_NORMAL)
4117 initialize_local_declaration(declaration);
4121 static void if_statement_to_firm(if_statement_t *statement)
4123 ir_node *cur_block = get_cur_block();
4125 ir_node *fallthrough_block = NULL;
4127 /* the true (blocks) */
4128 ir_node *true_block = NULL;
4129 if (statement->true_statement != NULL) {
4130 true_block = new_immBlock();
4131 statement_to_firm(statement->true_statement);
4132 if (get_cur_block() != NULL) {
4133 ir_node *jmp = new_Jmp();
4134 if (fallthrough_block == NULL)
4135 fallthrough_block = new_immBlock();
4136 add_immBlock_pred(fallthrough_block, jmp);
4140 /* the false (blocks) */
4141 ir_node *false_block = NULL;
4142 if (statement->false_statement != NULL) {
4143 false_block = new_immBlock();
4145 statement_to_firm(statement->false_statement);
4146 if (get_cur_block() != NULL) {
4147 ir_node *jmp = new_Jmp();
4148 if (fallthrough_block == NULL)
4149 fallthrough_block = new_immBlock();
4150 add_immBlock_pred(fallthrough_block, jmp);
4154 /* create the condition */
4155 if (cur_block != NULL) {
4156 if (true_block == NULL || false_block == NULL) {
4157 if (fallthrough_block == NULL)
4158 fallthrough_block = new_immBlock();
4159 if (true_block == NULL)
4160 true_block = fallthrough_block;
4161 if (false_block == NULL)
4162 false_block = fallthrough_block;
4165 set_cur_block(cur_block);
4166 create_condition_evaluation(statement->condition, true_block,
4170 mature_immBlock(true_block);
4171 if (false_block != fallthrough_block) {
4172 mature_immBlock(false_block);
4174 if (fallthrough_block != NULL) {
4175 mature_immBlock(fallthrough_block);
4178 set_cur_block(fallthrough_block);
4181 static void while_statement_to_firm(while_statement_t *statement)
4183 ir_node *jmp = NULL;
4184 if (get_cur_block() != NULL) {
4188 /* create the header block */
4189 ir_node *header_block = new_immBlock();
4191 add_immBlock_pred(header_block, jmp);
4195 ir_node *old_continue_label = continue_label;
4196 ir_node *old_break_label = break_label;
4197 continue_label = header_block;
4200 ir_node *body_block = new_immBlock();
4201 statement_to_firm(statement->body);
4202 ir_node *false_block = break_label;
4204 assert(continue_label == header_block);
4205 continue_label = old_continue_label;
4206 break_label = old_break_label;
4208 if (get_cur_block() != NULL) {
4210 add_immBlock_pred(header_block, jmp);
4213 /* shortcut for while(true) */
4214 if (is_constant_expression(statement->condition)
4215 && fold_constant(statement->condition) != 0) {
4216 set_cur_block(header_block);
4217 ir_node *header_jmp = new_Jmp();
4218 add_immBlock_pred(body_block, header_jmp);
4220 keep_alive(body_block);
4222 if (false_block == NULL) {
4223 false_block = new_immBlock();
4226 /* create the condition */
4227 set_cur_block(header_block);
4229 create_condition_evaluation(statement->condition, body_block,
4233 mature_immBlock(body_block);
4234 mature_immBlock(header_block);
4235 if (false_block != NULL) {
4236 mature_immBlock(false_block);
4239 set_cur_block(false_block);
4242 static void do_while_statement_to_firm(do_while_statement_t *statement)
4244 ir_node *jmp = NULL;
4245 if (get_cur_block() != NULL) {
4249 /* create the header block */
4250 ir_node *header_block = new_immBlock();
4253 ir_node *body_block = new_immBlock();
4255 add_immBlock_pred(body_block, jmp);
4258 ir_node *old_continue_label = continue_label;
4259 ir_node *old_break_label = break_label;
4260 continue_label = header_block;
4263 statement_to_firm(statement->body);
4264 ir_node *false_block = break_label;
4266 assert(continue_label == header_block);
4267 continue_label = old_continue_label;
4268 break_label = old_break_label;
4270 if (get_cur_block() != NULL) {
4271 ir_node *body_jmp = new_Jmp();
4272 add_immBlock_pred(header_block, body_jmp);
4273 mature_immBlock(header_block);
4276 if (false_block == NULL) {
4277 false_block = new_immBlock();
4280 /* create the condition */
4281 set_cur_block(header_block);
4283 create_condition_evaluation(statement->condition, body_block, false_block);
4284 mature_immBlock(body_block);
4285 mature_immBlock(header_block);
4286 if (false_block != NULL) {
4287 mature_immBlock(false_block);
4290 set_cur_block(false_block);
4293 static void for_statement_to_firm(for_statement_t *statement)
4295 ir_node *jmp = NULL;
4297 /* create declarations */
4298 declaration_t *declaration = statement->scope.declarations;
4299 for( ; declaration != NULL; declaration = declaration->next) {
4300 create_local_declaration(declaration);
4302 declaration = statement->scope.declarations;
4303 for( ; declaration != NULL; declaration = declaration->next) {
4304 initialize_local_declaration(declaration);
4307 if (get_cur_block() != NULL) {
4308 if (statement->initialisation != NULL) {
4309 expression_to_firm(statement->initialisation);
4316 /* create the step block */
4317 ir_node *const step_block = new_immBlock();
4318 if (statement->step != NULL) {
4319 expression_to_firm(statement->step);
4321 ir_node *const step_jmp = new_Jmp();
4323 /* create the header block */
4324 ir_node *const header_block = new_immBlock();
4326 add_immBlock_pred(header_block, jmp);
4328 add_immBlock_pred(header_block, step_jmp);
4330 /* the false block */
4331 ir_node *const false_block = new_immBlock();
4334 ir_node * body_block;
4335 if (statement->body != NULL) {
4336 ir_node *const old_continue_label = continue_label;
4337 ir_node *const old_break_label = break_label;
4338 continue_label = step_block;
4339 break_label = false_block;
4341 body_block = new_immBlock();
4342 statement_to_firm(statement->body);
4344 assert(continue_label == step_block);
4345 assert(break_label == false_block);
4346 continue_label = old_continue_label;
4347 break_label = old_break_label;
4349 if (get_cur_block() != NULL) {
4351 add_immBlock_pred(step_block, jmp);
4354 body_block = step_block;
4357 /* create the condition */
4358 set_cur_block(header_block);
4359 if (statement->condition != NULL) {
4360 create_condition_evaluation(statement->condition, body_block,
4363 keep_alive(header_block);
4365 add_immBlock_pred(body_block, jmp);
4368 mature_immBlock(body_block);
4369 mature_immBlock(false_block);
4370 mature_immBlock(step_block);
4371 mature_immBlock(header_block);
4372 mature_immBlock(false_block);
4374 set_cur_block(false_block);
4377 static void create_jump_statement(const statement_t *statement,
4378 ir_node *target_block)
4380 if (get_cur_block() == NULL)
4383 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4384 ir_node *jump = new_d_Jmp(dbgi);
4385 add_immBlock_pred(target_block, jump);
4387 set_cur_block(NULL);
4390 static ir_node *get_break_label(void)
4392 if (break_label == NULL) {
4393 ir_node *cur_block = get_cur_block();
4394 break_label = new_immBlock();
4395 set_cur_block(cur_block);
4400 static void switch_statement_to_firm(switch_statement_t *statement)
4402 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4404 ir_node *expression = expression_to_firm(statement->expression);
4405 ir_node *cond = new_d_Cond(dbgi, expression);
4407 set_cur_block(NULL);
4409 ir_node *const old_switch_cond = current_switch_cond;
4410 ir_node *const old_break_label = break_label;
4411 const bool old_saw_default_label = saw_default_label;
4412 saw_default_label = false;
4413 current_switch_cond = cond;
4415 switch_statement_t *const old_switch = current_switch;
4416 current_switch = statement;
4418 /* determine a free number for the default label */
4419 unsigned long num_cases = 0;
4421 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4422 if (l->expression == NULL) {
4426 for (long cns = l->first_case; cns <= l->last_case; ++cns)
4428 if (l->last_case > def_nr)
4429 def_nr = l->last_case;
4432 if (def_nr + 1 < 0) {
4433 /* Bad: an overflow occurred, we cannot be sure that the
4434 * maximum + 1 is a free number. Scan the values a second
4435 * time to find a free number.
4437 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4440 memset(bits, 0, (num_cases + 7) >> 3);
4441 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4442 if (l->expression == NULL) {
4446 for (long cns = l->first_case; cns <= l->last_case; ++cns) {
4447 if (cns >= 0 && (unsigned long)cns < num_cases)
4448 bits[cns >> 3] |= (1 << (cns & 7));
4451 /* We look at the first num_cases constants:
4452 * Either they are densed, so we took the last (num_cases)
4453 * one, or they are non densed, so we will find one free
4456 for (i = 0; i < num_cases; ++i)
4457 if ((bits[i >> 3] & (i & 7)) == 0)
4465 statement->default_proj_nr = def_nr;
4467 if (statement->body != NULL) {
4468 statement_to_firm(statement->body);
4471 if (get_cur_block() != NULL) {
4472 ir_node *jmp = new_Jmp();
4473 add_immBlock_pred(get_break_label(), jmp);
4476 if (!saw_default_label) {
4477 set_cur_block(get_nodes_block(cond));
4478 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4479 statement->default_proj_nr);
4480 add_immBlock_pred(get_break_label(), proj);
4483 if (break_label != NULL) {
4484 mature_immBlock(break_label);
4486 set_cur_block(break_label);
4488 assert(current_switch_cond == cond);
4489 current_switch = old_switch;
4490 current_switch_cond = old_switch_cond;
4491 break_label = old_break_label;
4492 saw_default_label = old_saw_default_label;
4495 static void case_label_to_firm(const case_label_statement_t *statement)
4497 if (statement->is_empty)
4500 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4502 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4505 ir_node *old_block = get_nodes_block(current_switch_cond);
4506 ir_node *block = new_immBlock();
4508 set_cur_block(old_block);
4509 if (statement->expression != NULL) {
4510 long start_pn = statement->first_case;
4511 long end_pn = statement->last_case;
4512 assert(start_pn <= end_pn);
4513 /* create jumps for all cases in the given range */
4514 for (long pn = start_pn; pn <= end_pn; ++pn) {
4515 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4516 add_immBlock_pred(block, proj);
4519 saw_default_label = true;
4520 proj = new_d_defaultProj(dbgi, current_switch_cond,
4521 current_switch->default_proj_nr);
4523 add_immBlock_pred(block, proj);
4526 if (fallthrough != NULL) {
4527 add_immBlock_pred(block, fallthrough);
4529 mature_immBlock(block);
4530 set_cur_block(block);
4532 if (statement->statement != NULL) {
4533 statement_to_firm(statement->statement);
4537 static ir_node *get_label_block(declaration_t *label)
4539 assert(label->namespc == NAMESPACE_LABEL);
4541 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4542 return label->v.block;
4544 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4546 ir_node *old_cur_block = get_cur_block();
4547 ir_node *block = new_immBlock();
4548 set_cur_block(old_cur_block);
4550 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4551 label->v.block = block;
4553 ARR_APP1(ir_node *, imature_blocks, block);
4558 static void label_to_firm(const label_statement_t *statement)
4560 ir_node *block = get_label_block(statement->label);
4562 if (get_cur_block() != NULL) {
4563 ir_node *jmp = new_Jmp();
4564 add_immBlock_pred(block, jmp);
4567 set_cur_block(block);
4570 if (statement->statement != NULL) {
4571 statement_to_firm(statement->statement);
4575 static void goto_to_firm(const goto_statement_t *statement)
4577 if (get_cur_block() == NULL)
4580 ir_node *block = get_label_block(statement->label);
4581 ir_node *jmp = new_Jmp();
4582 add_immBlock_pred(block, jmp);
4584 set_cur_block(NULL);
4587 static void asm_statement_to_firm(const asm_statement_t *statement)
4589 bool needs_memory = false;
4591 if (statement->is_volatile) {
4592 needs_memory = true;
4595 size_t n_clobbers = 0;
4596 asm_clobber_t *clobber = statement->clobbers;
4597 for( ; clobber != NULL; clobber = clobber->next) {
4598 const char *clobber_str = clobber->clobber.begin;
4600 if (!be_is_valid_clobber(clobber_str)) {
4601 errorf(&statement->base.source_position,
4602 "invalid clobber '%s' specified", clobber->clobber);
4606 if (strcmp(clobber_str, "memory") == 0) {
4607 needs_memory = true;
4611 ident *id = new_id_from_str(clobber_str);
4612 obstack_ptr_grow(&asm_obst, id);
4615 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4616 ident **clobbers = NULL;
4617 if (n_clobbers > 0) {
4618 clobbers = obstack_finish(&asm_obst);
4621 size_t n_inputs = 0;
4622 asm_argument_t *argument = statement->inputs;
4623 for ( ; argument != NULL; argument = argument->next)
4625 size_t n_outputs = 0;
4626 argument = statement->outputs;
4627 for ( ; argument != NULL; argument = argument->next)
4630 unsigned next_pos = 0;
4632 ir_node *ins[n_inputs + n_outputs + 1];
4635 ir_asm_constraint tmp_in_constraints[n_outputs];
4637 const expression_t *out_exprs[n_outputs];
4638 ir_node *out_addrs[n_outputs];
4639 size_t out_size = 0;
4641 argument = statement->outputs;
4642 for ( ; argument != NULL; argument = argument->next) {
4643 const char *constraints = argument->constraints.begin;
4644 asm_constraint_flags_t asm_flags
4645 = be_parse_asm_constraints(constraints);
4647 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4648 errorf(&statement->base.source_position,
4649 "some constraints in '%s' are not supported", constraints);
4652 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4653 errorf(&statement->base.source_position,
4654 "some constraints in '%s' are invalid", constraints);
4657 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4658 errorf(&statement->base.source_position,
4659 "no write flag specified for output constraints '%s'",
4664 unsigned pos = next_pos++;
4665 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4666 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4667 expression_t *expr = argument->expression;
4668 ir_node *addr = expression_to_addr(expr);
4669 /* in+output, construct an artifical same_as constraint on the
4671 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4673 ir_node *value = get_value_from_lvalue(expr, addr);
4675 snprintf(buf, sizeof(buf), "%d", pos);
4677 ir_asm_constraint constraint;
4678 constraint.pos = pos;
4679 constraint.constraint = new_id_from_str(buf);
4680 constraint.mode = get_ir_mode(expr->base.type);
4681 tmp_in_constraints[in_size] = constraint;
4682 ins[in_size] = value;
4687 out_exprs[out_size] = expr;
4688 out_addrs[out_size] = addr;
4690 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4691 /* pure memory ops need no input (but we have to make sure we
4692 * attach to the memory) */
4693 assert(! (asm_flags &
4694 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4695 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4696 needs_memory = true;
4698 /* we need to attach the address to the inputs */
4699 expression_t *expr = argument->expression;
4701 ir_asm_constraint constraint;
4702 constraint.pos = pos;
4703 constraint.constraint = new_id_from_str(constraints);
4704 constraint.mode = NULL;
4705 tmp_in_constraints[in_size] = constraint;
4707 ins[in_size] = expression_to_addr(expr);
4711 errorf(&statement->base.source_position,
4712 "only modifiers but no place set in constraints '%s'",
4717 ir_asm_constraint constraint;
4718 constraint.pos = pos;
4719 constraint.constraint = new_id_from_str(constraints);
4720 constraint.mode = get_ir_mode(argument->expression->base.type);
4722 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4724 assert(obstack_object_size(&asm_obst)
4725 == out_size * sizeof(ir_asm_constraint));
4726 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4729 obstack_grow(&asm_obst, tmp_in_constraints,
4730 in_size * sizeof(tmp_in_constraints[0]));
4731 /* find and count input and output arguments */
4732 argument = statement->inputs;
4733 for( ; argument != NULL; argument = argument->next) {
4734 const char *constraints = argument->constraints.begin;
4735 asm_constraint_flags_t asm_flags
4736 = be_parse_asm_constraints(constraints);
4738 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4739 errorf(&statement->base.source_position,
4740 "some constraints in '%s' are not supported", constraints);
4743 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4744 errorf(&statement->base.source_position,
4745 "some constraints in '%s' are invalid", constraints);
4748 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4749 errorf(&statement->base.source_position,
4750 "write flag specified for input constraints '%s'",
4756 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4757 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4758 /* we can treat this as "normal" input */
4759 input = expression_to_firm(argument->expression);
4760 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4761 /* pure memory ops need no input (but we have to make sure we
4762 * attach to the memory) */
4763 assert(! (asm_flags &
4764 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4765 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4766 needs_memory = true;
4767 input = expression_to_addr(argument->expression);
4769 errorf(&statement->base.source_position,
4770 "only modifiers but no place set in constraints '%s'",
4775 ir_asm_constraint constraint;
4776 constraint.pos = next_pos++;
4777 constraint.constraint = new_id_from_str(constraints);
4778 constraint.mode = get_irn_mode(input);
4780 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4781 ins[in_size++] = input;
4785 ir_asm_constraint constraint;
4786 constraint.pos = next_pos++;
4787 constraint.constraint = new_id_from_str("");
4788 constraint.mode = mode_M;
4790 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4791 ins[in_size++] = get_store();
4794 assert(obstack_object_size(&asm_obst)
4795 == in_size * sizeof(ir_asm_constraint));
4796 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4798 /* create asm node */
4799 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4801 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4803 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4804 out_size, output_constraints,
4805 n_clobbers, clobbers, asm_text);
4807 if (statement->is_volatile) {
4808 set_irn_pinned(node, op_pin_state_pinned);
4810 set_irn_pinned(node, op_pin_state_floats);
4813 /* create output projs & connect them */
4815 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4820 for (i = 0; i < out_size; ++i) {
4821 const expression_t *out_expr = out_exprs[i];
4823 ir_mode *mode = get_ir_mode(out_expr->base.type);
4824 ir_node *proj = new_Proj(node, mode, pn);
4825 ir_node *addr = out_addrs[i];
4827 set_value_for_expression_addr(out_expr, proj, addr);
4831 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4832 statement_to_firm(statement->try_statement);
4833 warningf(&statement->base.source_position, "structured exception handling ignored");
4836 static void leave_statement_to_firm(leave_statement_t *statement) {
4837 errorf(&statement->base.source_position, "__leave not supported yet");
4841 * Transform a statement.
4843 static void statement_to_firm(statement_t *statement)
4846 assert(!statement->base.transformed);
4847 statement->base.transformed = true;
4850 switch(statement->kind) {
4851 case STATEMENT_INVALID:
4852 panic("invalid statement found");
4854 case STATEMENT_EMPTY:
4857 case STATEMENT_COMPOUND:
4858 compound_statement_to_firm(&statement->compound);
4860 case STATEMENT_RETURN:
4861 return_statement_to_firm(&statement->returns);
4863 case STATEMENT_EXPRESSION:
4864 expression_statement_to_firm(&statement->expression);
4867 if_statement_to_firm(&statement->ifs);
4869 case STATEMENT_WHILE:
4870 while_statement_to_firm(&statement->whiles);
4872 case STATEMENT_DO_WHILE:
4873 do_while_statement_to_firm(&statement->do_while);
4875 case STATEMENT_DECLARATION:
4876 declaration_statement_to_firm(&statement->declaration);
4878 case STATEMENT_BREAK:
4879 create_jump_statement(statement, get_break_label());
4881 case STATEMENT_CONTINUE:
4882 create_jump_statement(statement, continue_label);
4884 case STATEMENT_SWITCH:
4885 switch_statement_to_firm(&statement->switchs);
4887 case STATEMENT_CASE_LABEL:
4888 case_label_to_firm(&statement->case_label);
4891 for_statement_to_firm(&statement->fors);
4893 case STATEMENT_LABEL:
4894 label_to_firm(&statement->label);
4896 case STATEMENT_GOTO:
4897 goto_to_firm(&statement->gotos);
4900 asm_statement_to_firm(&statement->asms);
4902 case STATEMENT_MS_TRY:
4903 ms_try_statement_to_firm(&statement->ms_try);
4905 case STATEMENT_LEAVE:
4906 leave_statement_to_firm(&statement->leave);
4909 panic("Statement not implemented\n");
4912 static int count_decls_in_expression(const expression_t *expression);
4914 static int count_local_declarations(const declaration_t * decl,
4915 const declaration_t *const end)
4918 for (; decl != end; decl = decl->next) {
4919 if (decl->namespc != NAMESPACE_NORMAL)
4921 type_t *type = skip_typeref(decl->type);
4923 if (!decl->address_taken && is_type_scalar(type))
4925 const initializer_t *initializer = decl->init.initializer;
4926 /* FIXME: should walk initializer hierarchies... */
4927 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4928 count += count_decls_in_expression(initializer->value.value);
4934 static int count_decls_in_expression(const expression_t *expression) {
4937 if (expression == NULL)
4940 switch((expression_kind_t) expression->base.kind) {
4941 case EXPR_STATEMENT:
4942 return count_decls_in_stmts(expression->statement.statement);
4944 int count_left = count_decls_in_expression(expression->binary.left);
4945 int count_right = count_decls_in_expression(expression->binary.right);
4946 return count_left + count_right;
4949 return count_decls_in_expression(expression->unary.value);
4951 call_argument_t *argument = expression->call.arguments;
4952 for( ; argument != NULL; argument = argument->next) {
4953 count += count_decls_in_expression(argument->expression);
4960 panic("unexpected expression kind");
4962 case EXPR_COMPOUND_LITERAL:
4966 case EXPR_CONDITIONAL:
4967 count += count_decls_in_expression(expression->conditional.condition);
4968 count += count_decls_in_expression(expression->conditional.true_expression);
4969 count += count_decls_in_expression(expression->conditional.false_expression);
4972 case EXPR_BUILTIN_PREFETCH:
4973 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4974 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4975 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4978 case EXPR_BUILTIN_CONSTANT_P:
4979 count += count_decls_in_expression(expression->builtin_constant.value);
4983 count += count_decls_in_expression(expression->select.compound);
4986 case EXPR_ARRAY_ACCESS:
4987 count += count_decls_in_expression(expression->array_access.array_ref);
4988 count += count_decls_in_expression(expression->array_access.index);
4991 case EXPR_CLASSIFY_TYPE:
4992 count += count_decls_in_expression(expression->classify_type.type_expression);
4996 case EXPR_ALIGNOF: {
4997 expression_t *tp_expression = expression->typeprop.tp_expression;
4998 if (tp_expression != NULL) {
4999 count += count_decls_in_expression(tp_expression);
5005 case EXPR_REFERENCE:
5007 case EXPR_CHARACTER_CONSTANT:
5008 case EXPR_WIDE_CHARACTER_CONSTANT:
5009 case EXPR_STRING_LITERAL:
5010 case EXPR_WIDE_STRING_LITERAL:
5012 case EXPR_BUILTIN_SYMBOL:
5018 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
5019 * (or implement all the missing expressions here/implement a walker)
5025 static int count_decls_in_stmts(const statement_t *stmt)
5028 for (; stmt != NULL; stmt = stmt->base.next) {
5029 switch (stmt->kind) {
5030 case STATEMENT_EMPTY:
5033 case STATEMENT_DECLARATION: {
5034 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5035 count += count_local_declarations(decl_stmt->declarations_begin,
5036 decl_stmt->declarations_end->next);
5040 case STATEMENT_COMPOUND: {
5041 const compound_statement_t *const comp =
5043 count += count_decls_in_stmts(comp->statements);
5047 case STATEMENT_IF: {
5048 const if_statement_t *const if_stmt = &stmt->ifs;
5049 count += count_decls_in_expression(if_stmt->condition);
5050 count += count_decls_in_stmts(if_stmt->true_statement);
5051 count += count_decls_in_stmts(if_stmt->false_statement);
5055 case STATEMENT_SWITCH: {
5056 const switch_statement_t *const switch_stmt = &stmt->switchs;
5057 count += count_decls_in_expression(switch_stmt->expression);
5058 count += count_decls_in_stmts(switch_stmt->body);
5062 case STATEMENT_LABEL: {
5063 const label_statement_t *const label_stmt = &stmt->label;
5064 if (label_stmt->statement != NULL) {
5065 count += count_decls_in_stmts(label_stmt->statement);
5070 case STATEMENT_WHILE: {
5071 const while_statement_t *const while_stmt = &stmt->whiles;
5072 count += count_decls_in_expression(while_stmt->condition);
5073 count += count_decls_in_stmts(while_stmt->body);
5077 case STATEMENT_DO_WHILE: {
5078 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
5079 count += count_decls_in_expression(do_while_stmt->condition);
5080 count += count_decls_in_stmts(do_while_stmt->body);
5084 case STATEMENT_FOR: {
5085 const for_statement_t *const for_stmt = &stmt->fors;
5086 count += count_local_declarations(for_stmt->scope.declarations, NULL);
5087 count += count_decls_in_expression(for_stmt->initialisation);
5088 count += count_decls_in_expression(for_stmt->condition);
5089 count += count_decls_in_expression(for_stmt->step);
5090 count += count_decls_in_stmts(for_stmt->body);
5094 case STATEMENT_CASE_LABEL: {
5095 const case_label_statement_t *label = &stmt->case_label;
5096 count += count_decls_in_expression(label->expression);
5097 if (label->statement != NULL) {
5098 count += count_decls_in_stmts(label->statement);
5104 case STATEMENT_BREAK:
5105 case STATEMENT_CONTINUE:
5108 case STATEMENT_EXPRESSION: {
5109 const expression_statement_t *expr_stmt = &stmt->expression;
5110 count += count_decls_in_expression(expr_stmt->expression);
5114 case STATEMENT_GOTO:
5115 case STATEMENT_LEAVE:
5116 case STATEMENT_INVALID:
5119 case STATEMENT_RETURN: {
5120 const return_statement_t *ret_stmt = &stmt->returns;
5121 count += count_decls_in_expression(ret_stmt->value);
5125 case STATEMENT_MS_TRY: {
5126 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5127 count += count_decls_in_stmts(try_stmt->try_statement);
5128 if (try_stmt->except_expression != NULL)
5129 count += count_decls_in_expression(try_stmt->except_expression);
5130 count += count_decls_in_stmts(try_stmt->final_statement);
5138 static int get_function_n_local_vars(declaration_t *declaration)
5142 /* count parameters */
5143 count += count_local_declarations(declaration->scope.declarations, NULL);
5145 /* count local variables declared in body */
5146 count += count_decls_in_stmts(declaration->init.statement);
5151 static void initialize_function_parameters(declaration_t *declaration)
5153 ir_graph *irg = current_ir_graph;
5154 ir_node *args = get_irg_args(irg);
5155 ir_node *start_block = get_irg_start_block(irg);
5156 ir_type *function_irtype = get_ir_type(declaration->type);
5159 declaration_t *parameter = declaration->scope.declarations;
5160 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5161 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5162 type_t *type = skip_typeref(parameter->type);
5164 bool needs_entity = parameter->address_taken;
5165 assert(!is_type_array(type));
5166 if (is_type_compound(type)) {
5167 needs_entity = true;
5171 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5172 ident *id = new_id_from_str(parameter->symbol->string);
5173 set_entity_ident(entity, id);
5175 parameter->declaration_kind
5176 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5177 parameter->v.entity = entity;
5181 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5182 ir_mode *param_mode = get_type_mode(param_irtype);
5185 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5187 ir_mode *mode = get_ir_mode(type);
5188 value = create_conv(NULL, value, mode);
5189 value = do_strict_conv(NULL, value);
5191 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5192 parameter->v.value_number = next_value_number_function;
5193 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5194 ++next_value_number_function;
5196 set_value(parameter->v.value_number, value);
5201 * Handle additional decl modifiers for IR-graphs
5203 * @param irg the IR-graph
5204 * @param dec_modifiers additional modifiers
5206 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5208 if (decl_modifiers & DM_NORETURN) {
5209 /* TRUE if the declaration includes the Microsoft
5210 __declspec(noreturn) specifier. */
5211 set_irg_additional_property(irg, mtp_property_noreturn);
5213 if (decl_modifiers & DM_NOTHROW) {
5214 /* TRUE if the declaration includes the Microsoft
5215 __declspec(nothrow) specifier. */
5216 set_irg_additional_property(irg, mtp_property_nothrow);
5218 if (decl_modifiers & DM_NAKED) {
5219 /* TRUE if the declaration includes the Microsoft
5220 __declspec(naked) specifier. */
5221 set_irg_additional_property(irg, mtp_property_naked);
5223 if (decl_modifiers & DM_FORCEINLINE) {
5224 /* TRUE if the declaration includes the
5225 Microsoft __forceinline specifier. */
5226 set_irg_inline_property(irg, irg_inline_forced);
5228 if (decl_modifiers & DM_NOINLINE) {
5229 /* TRUE if the declaration includes the Microsoft
5230 __declspec(noinline) specifier. */
5231 set_irg_inline_property(irg, irg_inline_forbidden);
5235 static void add_function_pointer(ir_type *segment, ir_entity *method,
5236 const char *unique_template)
5238 ir_type *method_type = get_entity_type(method);
5239 ident *id = id_unique(unique_template);
5240 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5242 ident *ide = id_unique(unique_template);
5243 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5244 ir_graph *irg = get_const_code_irg();
5245 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5248 set_entity_compiler_generated(ptr, 1);
5249 set_entity_variability(ptr, variability_constant);
5250 set_atomic_ent_value(ptr, val);
5254 * Create code for a function.
5256 static void create_function(declaration_t *declaration)
5258 ir_entity *function_entity = get_function_entity(declaration);
5260 if (declaration->init.statement == NULL)
5263 if (declaration->modifiers & DM_CONSTRUCTOR) {
5264 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5265 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5267 if (declaration->modifiers & DM_DESTRUCTOR) {
5268 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5269 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5272 current_function_decl = declaration;
5273 current_function_name = NULL;
5274 current_funcsig = NULL;
5276 assert(imature_blocks == NULL);
5277 imature_blocks = NEW_ARR_F(ir_node*, 0);
5279 int n_local_vars = get_function_n_local_vars(declaration);
5280 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5282 set_irg_fp_model(irg, firm_opt.fp_model);
5283 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5284 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5286 ir_node *first_block = get_cur_block();
5288 /* set inline flags */
5289 if (declaration->is_inline)
5290 set_irg_inline_property(irg, irg_inline_recomended);
5291 handle_decl_modifier_irg(irg, declaration->modifiers);
5293 next_value_number_function = 0;
5294 initialize_function_parameters(declaration);
5296 statement_to_firm(declaration->init.statement);
5298 ir_node *end_block = get_irg_end_block(irg);
5300 /* do we have a return statement yet? */
5301 if (get_cur_block() != NULL) {
5302 type_t *type = skip_typeref(declaration->type);
5303 assert(is_type_function(type));
5304 const function_type_t *func_type = &type->function;
5305 const type_t *return_type
5306 = skip_typeref(func_type->return_type);
5309 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5310 ret = new_Return(get_store(), 0, NULL);
5313 if (is_type_scalar(return_type)) {
5314 mode = get_ir_mode(func_type->return_type);
5320 /* ยง5.1.2.2.3 main implicitly returns 0 */
5321 if (strcmp(declaration->symbol->string, "main") == 0) {
5322 in[0] = new_Const(mode, get_mode_null(mode));
5324 in[0] = new_Unknown(mode);
5326 ret = new_Return(get_store(), 1, in);
5328 add_immBlock_pred(end_block, ret);
5331 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
5332 mature_immBlock(imature_blocks[i]);
5334 DEL_ARR_F(imature_blocks);
5335 imature_blocks = NULL;
5337 mature_immBlock(first_block);
5338 mature_immBlock(end_block);
5340 irg_finalize_cons(irg);
5342 /* finalize the frame type */
5343 ir_type *frame_type = get_irg_frame_type(irg);
5344 int n = get_compound_n_members(frame_type);
5347 for(int i = 0; i < n; ++i) {
5348 ir_entity *entity = get_compound_member(frame_type, i);
5349 ir_type *entity_type = get_entity_type(entity);
5351 int align = get_type_alignment_bytes(entity_type);
5352 if (align > align_all)
5356 misalign = offset % align;
5358 offset += align - misalign;
5362 set_entity_offset(entity, offset);
5363 offset += get_type_size_bytes(entity_type);
5365 set_type_size_bytes(frame_type, offset);
5366 set_type_alignment_bytes(frame_type, align_all);
5371 static void scope_to_firm(scope_t *scope)
5373 /* first pass: create declarations */
5374 declaration_t *declaration = scope->declarations;
5375 for( ; declaration != NULL; declaration = declaration->next) {
5376 if (declaration->namespc != NAMESPACE_NORMAL)
5378 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5379 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5381 if (declaration->symbol == NULL)
5384 type_t *type = skip_typeref(declaration->type);
5385 if (is_type_function(type)) {
5386 get_function_entity(declaration);
5388 create_global_variable(declaration);
5392 /* second pass: create code/initializers */
5393 declaration = scope->declarations;
5394 for( ; declaration != NULL; declaration = declaration->next) {
5395 if (declaration->namespc != NAMESPACE_NORMAL)
5397 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5398 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5400 if (declaration->symbol == NULL)
5403 type_t *type = declaration->type;
5404 if (type->kind == TYPE_FUNCTION) {
5405 create_function(declaration);
5407 assert(declaration->declaration_kind
5408 == DECLARATION_KIND_GLOBAL_VARIABLE);
5409 current_ir_graph = get_const_code_irg();
5410 create_declaration_initializer(declaration);
5415 void init_ast2firm(void)
5417 obstack_init(&asm_obst);
5418 init_atomic_modes();
5420 id_underscore = new_id_from_chars("_", 1);
5421 id_imp = new_id_from_chars("__imp_", 6);
5423 /* OS option must be set to the backend */
5424 const char *s = "ia32-gasmode=linux";
5425 switch (firm_opt.os_support) {
5426 case OS_SUPPORT_MINGW:
5427 create_ld_ident = create_ld_ident_win32;
5428 s = "ia32-gasmode=mingw";
5430 case OS_SUPPORT_LINUX:
5431 create_ld_ident = create_ld_ident_linux_elf;
5432 s = "ia32-gasmode=elf";
5434 case OS_SUPPORT_MACHO:
5435 create_ld_ident = create_ld_ident_macho;
5436 s = "ia32-gasmode=macho";
5439 int res = firm_be_option(s);
5443 /* create idents for all known runtime functions */
5444 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5445 rts_idents[i] = new_id_from_str(rts_data[i].name);
5448 entitymap_init(&entitymap);
5451 static void init_ir_types(void)
5453 static int ir_types_initialized = 0;
5454 if (ir_types_initialized)
5456 ir_types_initialized = 1;
5458 ir_type_int = get_ir_type(type_int);
5459 ir_type_const_char = get_ir_type(type_const_char);
5460 ir_type_wchar_t = get_ir_type(type_wchar_t);
5461 ir_type_void = get_ir_type(type_void);
5464 void exit_ast2firm(void)
5466 entitymap_destroy(&entitymap);
5467 obstack_free(&asm_obst, NULL);
5470 static void global_asm_to_firm(statement_t *s)
5472 for (; s != NULL; s = s->base.next) {
5473 assert(s->kind == STATEMENT_ASM);
5475 char const *const text = s->asms.asm_text.begin;
5476 size_t size = s->asms.asm_text.size;
5478 /* skip the last \0 */
5479 if (text[size - 1] == '\0')
5482 ident *const id = new_id_from_chars(text, size);
5487 void translation_unit_to_firm(translation_unit_t *unit)
5489 /* just to be sure */
5490 continue_label = NULL;
5492 current_switch_cond = NULL;
5496 scope_to_firm(&unit->scope);
5497 global_asm_to_firm(unit->global_asm);