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 **immature_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);
1665 if (function->kind == EXPR_REFERENCE &&
1666 function->reference.declaration->modifiers & DM_NORETURN) {
1667 /* A dead end: Keep the Call and the Block. Also place all further
1668 * nodes into a new and unreachable block. */
1670 keep_alive(get_cur_block());
1677 static void statement_to_firm(statement_t *statement);
1678 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1680 static ir_node *expression_to_addr(const expression_t *expression);
1681 static ir_node *create_condition_evaluation(const expression_t *expression,
1682 ir_node *true_block,
1683 ir_node *false_block);
1685 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1688 value = do_strict_conv(dbgi, value);
1690 ir_node *memory = get_store();
1692 if (is_type_scalar(type)) {
1693 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1694 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1695 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1696 set_Store_volatility(store, volatility_is_volatile);
1697 set_store(store_mem);
1699 ir_type *irtype = get_ir_type(type);
1700 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1701 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1702 set_store(copyb_mem);
1706 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1708 tarval *all_one = get_mode_all_one(mode);
1709 int mode_size = get_mode_size_bits(mode);
1711 assert(offset >= 0);
1713 assert(offset + size <= mode_size);
1714 if (size == mode_size) {
1718 long shiftr = get_mode_size_bits(mode) - size;
1719 long shiftl = offset;
1720 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1721 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1722 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1723 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1728 static void bitfield_store_to_firm(const select_expression_t *expression,
1729 ir_node *addr, ir_node *value)
1731 type_t *type = expression->base.type;
1732 ir_mode *mode = get_ir_mode(type);
1734 assert(get_irn_mode(value) == mode || is_Bad(value));
1736 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1738 /* kill upper bits of value and shift to right position */
1739 ir_entity *entity = expression->compound_entry->v.entity;
1740 int bitoffset = get_entity_offset_bits_remainder(entity);
1741 ir_type *entity_type = get_entity_type(entity);
1742 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1744 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1745 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1746 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1747 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1748 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1749 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1751 /* load current value */
1752 ir_node *mem = get_store();
1753 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1754 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1755 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1756 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1757 tarval *inv_mask = tarval_not(shift_mask);
1758 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1759 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1761 /* construct new value and store */
1762 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1763 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1764 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1765 set_store(store_mem);
1767 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1768 set_Load_volatility(load, volatility_is_volatile);
1769 set_Store_volatility(store, volatility_is_volatile);
1773 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1776 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1777 type_t *type = expression->base.type;
1778 ir_mode *mode = get_ir_mode(type);
1779 ir_node *mem = get_store();
1780 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1781 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1782 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1784 load_res = create_conv(dbgi, load_res, mode_int);
1786 set_store(load_mem);
1788 /* kill upper bits */
1789 ir_entity *entity = expression->compound_entry->v.entity;
1790 int bitoffset = get_entity_offset_bits_remainder(entity);
1791 ir_type *entity_type = get_entity_type(entity);
1792 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1793 long shift_bitsl = machine_size - bitoffset - bitsize;
1794 assert(shift_bitsl >= 0);
1795 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1796 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1797 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1799 long shift_bitsr = bitoffset + shift_bitsl;
1800 assert(shift_bitsr <= (long) machine_size);
1801 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1802 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1804 if (mode_is_signed(mode)) {
1805 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1807 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1810 return create_conv(dbgi, shiftr, mode);
1813 static void set_value_for_expression_addr(const expression_t *expression,
1814 ir_node *value, ir_node *addr)
1816 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1817 value = do_strict_conv(dbgi, value);
1819 if (expression->kind == EXPR_REFERENCE) {
1820 const reference_expression_t *ref = &expression->reference;
1822 declaration_t *declaration = ref->declaration;
1823 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1824 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1825 set_value(declaration->v.value_number, value);
1831 addr = expression_to_addr(expression);
1833 type_t *type = skip_typeref(expression->base.type);
1835 if (expression->kind == EXPR_SELECT) {
1836 const select_expression_t *select = &expression->select;
1838 declaration_t *declaration = select->compound_entry;
1839 if (declaration->type->kind == TYPE_BITFIELD) {
1840 bitfield_store_to_firm(select, addr, value);
1845 assign_value(dbgi, addr, type, value);
1848 static void set_value_for_expression(const expression_t *expression,
1851 set_value_for_expression_addr(expression, value, NULL);
1854 static ir_node *get_value_from_lvalue(const expression_t *expression,
1857 if (expression->kind == EXPR_REFERENCE) {
1858 const reference_expression_t *ref = &expression->reference;
1860 declaration_t *declaration = ref->declaration;
1861 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1862 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1863 assert(addr == NULL);
1864 ir_mode *mode = get_ir_mode(expression->base.type);
1865 return get_value(declaration->v.value_number, mode);
1869 assert(addr != NULL);
1870 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1873 if (expression->kind == EXPR_SELECT &&
1874 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1875 value = bitfield_extract_to_firm(&expression->select, addr);
1877 value = deref_address(dbgi, expression->base.type, addr);
1884 static ir_node *create_incdec(const unary_expression_t *expression)
1886 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1887 const expression_t *value_expr = expression->value;
1888 ir_node *addr = expression_to_addr(value_expr);
1889 ir_node *value = get_value_from_lvalue(value_expr, addr);
1891 type_t *type = skip_typeref(expression->base.type);
1892 ir_mode *mode = get_ir_mode(expression->base.type);
1895 if (is_type_pointer(type)) {
1896 pointer_type_t *pointer_type = &type->pointer;
1897 offset = get_type_size(pointer_type->points_to);
1899 assert(is_type_arithmetic(type));
1900 offset = new_Const(mode, get_mode_one(mode));
1904 ir_node *store_value;
1905 switch(expression->base.kind) {
1906 case EXPR_UNARY_POSTFIX_INCREMENT:
1908 store_value = new_d_Add(dbgi, value, offset, mode);
1910 case EXPR_UNARY_POSTFIX_DECREMENT:
1912 store_value = new_d_Sub(dbgi, value, offset, mode);
1914 case EXPR_UNARY_PREFIX_INCREMENT:
1915 result = new_d_Add(dbgi, value, offset, mode);
1916 store_value = result;
1918 case EXPR_UNARY_PREFIX_DECREMENT:
1919 result = new_d_Sub(dbgi, value, offset, mode);
1920 store_value = result;
1923 panic("no incdec expr in create_incdec");
1926 set_value_for_expression_addr(value_expr, store_value, addr);
1931 static bool is_local_variable(expression_t *expression)
1933 if (expression->kind != EXPR_REFERENCE)
1935 reference_expression_t *ref_expr = &expression->reference;
1936 declaration_t *declaration = ref_expr->declaration;
1937 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1940 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1943 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1944 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1945 case EXPR_BINARY_NOTEQUAL:
1946 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1947 case EXPR_BINARY_ISLESS:
1948 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1949 case EXPR_BINARY_ISLESSEQUAL:
1950 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1951 case EXPR_BINARY_ISGREATER:
1952 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1953 case EXPR_BINARY_ISGREATEREQUAL:
1954 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1955 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1960 panic("trying to get pn_Cmp from non-comparison binexpr type");
1964 * Handle the assume optimizer hint: check if a Confirm
1965 * node can be created.
1967 * @param dbi debug info
1968 * @param expr the IL assume expression
1970 * we support here only some simple cases:
1975 static ir_node *handle_assume_compare(dbg_info *dbi,
1976 const binary_expression_t *expression)
1978 expression_t *op1 = expression->left;
1979 expression_t *op2 = expression->right;
1980 declaration_t *var2, *var = NULL;
1981 ir_node *res = NULL;
1984 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1986 if (is_local_variable(op1) && is_local_variable(op2)) {
1987 var = op1->reference.declaration;
1988 var2 = op2->reference.declaration;
1990 type_t *const type = skip_typeref(var->type);
1991 ir_mode *const mode = get_ir_mode(type);
1993 ir_node *const irn1 = get_value(var->v.value_number, mode);
1994 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1996 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1997 set_value(var2->v.value_number, res);
1999 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2000 set_value(var->v.value_number, res);
2006 if (is_local_variable(op1) && is_constant_expression(op2)) {
2007 var = op1->reference.declaration;
2009 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2010 cmp_val = get_inversed_pnc(cmp_val);
2011 var = op2->reference.declaration;
2016 type_t *const type = skip_typeref(var->type);
2017 ir_mode *const mode = get_ir_mode(type);
2019 res = get_value(var->v.value_number, mode);
2020 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2021 set_value(var->v.value_number, res);
2027 * Handle the assume optimizer hint.
2029 * @param dbi debug info
2030 * @param expr the IL assume expression
2032 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2033 switch(expression->kind) {
2034 case EXPR_BINARY_EQUAL:
2035 case EXPR_BINARY_NOTEQUAL:
2036 case EXPR_BINARY_LESS:
2037 case EXPR_BINARY_LESSEQUAL:
2038 case EXPR_BINARY_GREATER:
2039 case EXPR_BINARY_GREATEREQUAL:
2040 return handle_assume_compare(dbi, &expression->binary);
2046 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2048 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2049 type_t *type = skip_typeref(expression->base.type);
2051 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2052 return expression_to_addr(expression->value);
2054 const expression_t *value = expression->value;
2056 switch(expression->base.kind) {
2057 case EXPR_UNARY_NEGATE: {
2058 ir_node *value_node = expression_to_firm(value);
2059 ir_mode *mode = get_ir_mode(type);
2060 return new_d_Minus(dbgi, value_node, mode);
2062 case EXPR_UNARY_PLUS:
2063 return expression_to_firm(value);
2064 case EXPR_UNARY_BITWISE_NEGATE: {
2065 ir_node *value_node = expression_to_firm(value);
2066 ir_mode *mode = get_ir_mode(type);
2067 return new_d_Not(dbgi, value_node, mode);
2069 case EXPR_UNARY_NOT: {
2070 ir_node *value_node = _expression_to_firm(value);
2071 value_node = create_conv(dbgi, value_node, mode_b);
2072 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2075 case EXPR_UNARY_DEREFERENCE: {
2076 ir_node *value_node = expression_to_firm(value);
2077 type_t *value_type = skip_typeref(value->base.type);
2078 assert(is_type_pointer(value_type));
2079 type_t *points_to = value_type->pointer.points_to;
2080 return deref_address(dbgi, points_to, value_node);
2082 case EXPR_UNARY_POSTFIX_INCREMENT:
2083 case EXPR_UNARY_POSTFIX_DECREMENT:
2084 case EXPR_UNARY_PREFIX_INCREMENT:
2085 case EXPR_UNARY_PREFIX_DECREMENT:
2086 return create_incdec(expression);
2087 case EXPR_UNARY_CAST: {
2088 ir_node *value_node = expression_to_firm(value);
2089 if (is_type_scalar(type)) {
2090 ir_mode *mode = get_ir_mode(type);
2091 ir_node *node = create_conv(dbgi, value_node, mode);
2092 node = do_strict_conv(dbgi, node);
2095 /* make sure firm type is constructed */
2096 (void) get_ir_type(type);
2100 case EXPR_UNARY_CAST_IMPLICIT: {
2101 ir_node *value_node = expression_to_firm(value);
2102 if (is_type_scalar(type)) {
2103 ir_mode *mode = get_ir_mode(type);
2104 return create_conv(dbgi, value_node, mode);
2109 case EXPR_UNARY_ASSUME:
2110 if (firm_opt.confirm)
2111 return handle_assume(dbgi, value);
2118 panic("invalid UNEXPR type found");
2122 * produces a 0/1 depending of the value of a mode_b node
2124 static ir_node *produce_condition_result(const expression_t *expression,
2127 ir_mode *mode = get_ir_mode(expression->base.type);
2128 ir_node *cur_block = get_cur_block();
2130 ir_node *one_block = new_immBlock();
2131 ir_node *one = new_Const(mode, get_mode_one(mode));
2132 ir_node *jmp_one = new_d_Jmp(dbgi);
2134 ir_node *zero_block = new_immBlock();
2135 ir_node *zero = new_Const(mode, get_mode_null(mode));
2136 ir_node *jmp_zero = new_d_Jmp(dbgi);
2138 set_cur_block(cur_block);
2139 create_condition_evaluation(expression, one_block, zero_block);
2140 mature_immBlock(one_block);
2141 mature_immBlock(zero_block);
2143 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2144 new_Block(2, in_cf);
2146 ir_node *in[2] = { one, zero };
2147 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2152 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2153 ir_node *value, type_t *type)
2155 pointer_type_t *const pointer_type = &type->pointer;
2156 type_t *const points_to = skip_typeref(pointer_type->points_to);
2157 unsigned elem_size = get_type_size_const(points_to);
2159 /* gcc extension: allow arithmetic with void * and function * */
2160 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2161 is_type_function(points_to)) {
2165 assert(elem_size >= 1);
2169 value = create_conv(dbgi, value, mode_int);
2170 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2171 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2175 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2176 ir_node *left, ir_node *right)
2179 type_t *type_left = skip_typeref(expression->left->base.type);
2180 type_t *type_right = skip_typeref(expression->right->base.type);
2182 expression_kind_t kind = expression->base.kind;
2185 case EXPR_BINARY_SHIFTLEFT:
2186 case EXPR_BINARY_SHIFTRIGHT:
2187 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2188 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2189 mode = get_irn_mode(left);
2190 right = create_conv(dbgi, right, mode_uint);
2193 case EXPR_BINARY_SUB:
2194 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2195 const pointer_type_t *const ptr_type = &type_left->pointer;
2197 mode = get_ir_mode(expression->base.type);
2198 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2199 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2200 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2201 ir_node *const no_mem = new_NoMem();
2202 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2203 mode, op_pin_state_floats);
2204 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2207 case EXPR_BINARY_SUB_ASSIGN:
2208 if (is_type_pointer(type_left)) {
2209 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2210 mode = get_ir_mode(type_left);
2215 case EXPR_BINARY_ADD:
2216 case EXPR_BINARY_ADD_ASSIGN:
2217 if (is_type_pointer(type_left)) {
2218 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2219 mode = get_ir_mode(type_left);
2221 } else if (is_type_pointer(type_right)) {
2222 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2223 mode = get_ir_mode(type_right);
2230 mode = get_irn_mode(right);
2231 left = create_conv(dbgi, left, mode);
2236 case EXPR_BINARY_ADD_ASSIGN:
2237 case EXPR_BINARY_ADD:
2238 return new_d_Add(dbgi, left, right, mode);
2239 case EXPR_BINARY_SUB_ASSIGN:
2240 case EXPR_BINARY_SUB:
2241 return new_d_Sub(dbgi, left, right, mode);
2242 case EXPR_BINARY_MUL_ASSIGN:
2243 case EXPR_BINARY_MUL:
2244 return new_d_Mul(dbgi, left, right, mode);
2245 case EXPR_BINARY_BITWISE_AND:
2246 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2247 return new_d_And(dbgi, left, right, mode);
2248 case EXPR_BINARY_BITWISE_OR:
2249 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2250 return new_d_Or(dbgi, left, right, mode);
2251 case EXPR_BINARY_BITWISE_XOR:
2252 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2253 return new_d_Eor(dbgi, left, right, mode);
2254 case EXPR_BINARY_SHIFTLEFT:
2255 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2256 return new_d_Shl(dbgi, left, right, mode);
2257 case EXPR_BINARY_SHIFTRIGHT:
2258 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2259 if (mode_is_signed(mode)) {
2260 return new_d_Shrs(dbgi, left, right, mode);
2262 return new_d_Shr(dbgi, left, right, mode);
2264 case EXPR_BINARY_DIV:
2265 case EXPR_BINARY_DIV_ASSIGN: {
2266 ir_node *pin = new_Pin(new_NoMem());
2269 if (mode_is_float(mode)) {
2270 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2271 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2273 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2274 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2278 case EXPR_BINARY_MOD:
2279 case EXPR_BINARY_MOD_ASSIGN: {
2280 ir_node *pin = new_Pin(new_NoMem());
2281 assert(!mode_is_float(mode));
2282 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2283 op_pin_state_floats);
2284 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2288 panic("unexpected expression kind");
2292 static ir_node *create_lazy_op(const binary_expression_t *expression)
2294 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2295 type_t *type = expression->base.type;
2296 ir_mode *mode = get_ir_mode(type);
2298 if (is_constant_expression(expression->left)) {
2299 long val = fold_constant(expression->left);
2300 expression_kind_t ekind = expression->base.kind;
2301 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2302 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2303 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2304 return expression_to_firm(expression->right);
2306 return new_Const(mode, get_mode_one(mode));
2310 return produce_condition_result((const expression_t*) expression, dbgi);
2313 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2314 ir_node *right, ir_mode *mode);
2316 static ir_node *create_assign_binop(const binary_expression_t *expression)
2318 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2319 const expression_t *left_expr = expression->left;
2320 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2321 ir_node *right = expression_to_firm(expression->right);
2322 ir_node *left_addr = expression_to_addr(left_expr);
2323 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2324 ir_node *result = create_op(dbgi, expression, left, right);
2326 result = create_conv(dbgi, result, left_mode);
2327 result = do_strict_conv(dbgi, result);
2329 set_value_for_expression_addr(left_expr, result, left_addr);
2334 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2336 expression_kind_t kind = expression->base.kind;
2339 case EXPR_BINARY_EQUAL:
2340 case EXPR_BINARY_NOTEQUAL:
2341 case EXPR_BINARY_LESS:
2342 case EXPR_BINARY_LESSEQUAL:
2343 case EXPR_BINARY_GREATER:
2344 case EXPR_BINARY_GREATEREQUAL:
2345 case EXPR_BINARY_ISGREATER:
2346 case EXPR_BINARY_ISGREATEREQUAL:
2347 case EXPR_BINARY_ISLESS:
2348 case EXPR_BINARY_ISLESSEQUAL:
2349 case EXPR_BINARY_ISLESSGREATER:
2350 case EXPR_BINARY_ISUNORDERED: {
2351 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2352 ir_node *left = expression_to_firm(expression->left);
2353 ir_node *right = expression_to_firm(expression->right);
2354 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2355 long pnc = get_pnc(kind, expression->left->base.type);
2356 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2359 case EXPR_BINARY_ASSIGN: {
2360 ir_node *addr = expression_to_addr(expression->left);
2361 ir_node *right = expression_to_firm(expression->right);
2362 set_value_for_expression_addr(expression->left, right, addr);
2366 case EXPR_BINARY_ADD:
2367 case EXPR_BINARY_SUB:
2368 case EXPR_BINARY_MUL:
2369 case EXPR_BINARY_DIV:
2370 case EXPR_BINARY_MOD:
2371 case EXPR_BINARY_BITWISE_AND:
2372 case EXPR_BINARY_BITWISE_OR:
2373 case EXPR_BINARY_BITWISE_XOR:
2374 case EXPR_BINARY_SHIFTLEFT:
2375 case EXPR_BINARY_SHIFTRIGHT:
2377 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2378 ir_node *left = expression_to_firm(expression->left);
2379 ir_node *right = expression_to_firm(expression->right);
2380 return create_op(dbgi, expression, left, right);
2382 case EXPR_BINARY_LOGICAL_AND:
2383 case EXPR_BINARY_LOGICAL_OR:
2384 return create_lazy_op(expression);
2385 case EXPR_BINARY_COMMA:
2386 /* create side effects of left side */
2387 (void) expression_to_firm(expression->left);
2388 return _expression_to_firm(expression->right);
2390 case EXPR_BINARY_ADD_ASSIGN:
2391 case EXPR_BINARY_SUB_ASSIGN:
2392 case EXPR_BINARY_MUL_ASSIGN:
2393 case EXPR_BINARY_MOD_ASSIGN:
2394 case EXPR_BINARY_DIV_ASSIGN:
2395 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2396 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2397 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2398 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2399 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2400 return create_assign_binop(expression);
2401 case EXPR_BINARY_BUILTIN_EXPECT:
2402 return _expression_to_firm(expression->left);
2404 panic("TODO binexpr type");
2408 static ir_node *array_access_addr(const array_access_expression_t *expression)
2410 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2411 ir_node *base_addr = expression_to_firm(expression->array_ref);
2412 ir_node *offset = expression_to_firm(expression->index);
2414 type_t *offset_type = skip_typeref(expression->index->base.type);
2416 if (is_type_signed(offset_type)) {
2417 mode = get_ir_mode(type_ssize_t);
2419 mode = get_ir_mode(type_size_t);
2421 offset = create_conv(dbgi, offset, mode);
2423 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2424 assert(is_type_pointer(ref_type));
2425 pointer_type_t *pointer_type = &ref_type->pointer;
2427 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2428 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2429 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2431 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2436 static ir_node *array_access_to_firm(
2437 const array_access_expression_t *expression)
2439 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2440 ir_node *addr = array_access_addr(expression);
2441 type_t *type = revert_automatic_type_conversion(
2442 (const expression_t*) expression);
2443 type = skip_typeref(type);
2445 return deref_address(dbgi, type, addr);
2448 static long get_offsetof_offset(const offsetof_expression_t *expression)
2450 type_t *orig_type = expression->type;
2453 designator_t *designator = expression->designator;
2454 for( ; designator != NULL; designator = designator->next) {
2455 type_t *type = skip_typeref(orig_type);
2456 /* be sure the type is constructed */
2457 (void) get_ir_type(type);
2459 if (designator->symbol != NULL) {
2460 assert(is_type_compound(type));
2461 symbol_t *symbol = designator->symbol;
2463 declaration_t *declaration = type->compound.declaration;
2464 declaration_t *iter = declaration->scope.declarations;
2465 for( ; iter != NULL; iter = iter->next) {
2466 if (iter->symbol == symbol) {
2470 assert(iter != NULL);
2472 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2473 offset += get_entity_offset(iter->v.entity);
2475 orig_type = iter->type;
2477 expression_t *array_index = designator->array_index;
2478 assert(designator->array_index != NULL);
2479 assert(is_type_array(type));
2480 assert(is_type_valid(array_index->base.type));
2482 long index = fold_constant(array_index);
2483 ir_type *arr_type = get_ir_type(type);
2484 ir_type *elem_type = get_array_element_type(arr_type);
2485 long elem_size = get_type_size_bytes(elem_type);
2487 offset += index * elem_size;
2489 orig_type = type->array.element_type;
2496 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2498 ir_mode *mode = get_ir_mode(expression->base.type);
2499 long offset = get_offsetof_offset(expression);
2500 tarval *tv = new_tarval_from_long(offset, mode);
2501 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2503 return new_d_Const(dbgi, mode, tv);
2506 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2507 ir_entity *entity, type_t *type);
2509 static ir_node *compound_literal_to_firm(
2510 const compound_literal_expression_t *expression)
2512 type_t *type = expression->type;
2514 /* create an entity on the stack */
2515 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2517 ident *const id = id_unique("CompLit.%u");
2518 ir_type *const irtype = get_ir_type(type);
2519 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2520 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2521 set_entity_ld_ident(entity, id);
2523 set_entity_variability(entity, variability_uninitialized);
2525 /* create initialisation code */
2526 initializer_t *initializer = expression->initializer;
2527 create_local_initializer(initializer, dbgi, entity, type);
2529 /* create a sel for the compound literal address */
2530 ir_node *frame = get_local_frame(entity);
2531 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2536 * Transform a sizeof expression into Firm code.
2538 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2540 type_t *type = expression->type;
2542 type = expression->tp_expression->base.type;
2543 assert(type != NULL);
2546 type = skip_typeref(type);
2547 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2548 if (is_type_array(type) && type->array.is_vla
2549 && expression->tp_expression != NULL) {
2550 expression_to_firm(expression->tp_expression);
2553 return get_type_size(type);
2557 * Transform an alignof expression into Firm code.
2559 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2561 type_t *type = expression->type;
2563 /* beware: if expression is a variable reference, return the
2564 alignment of the variable. */
2565 const expression_t *tp_expression = expression->tp_expression;
2566 const declaration_t *declaration = expr_is_variable(tp_expression);
2567 if (declaration != NULL) {
2568 /* TODO: get the alignment of this variable. */
2570 type = tp_expression->base.type;
2571 assert(type != NULL);
2574 ir_mode *const mode = get_ir_mode(expression->base.type);
2575 symconst_symbol sym;
2576 sym.type_p = get_ir_type(type);
2577 return new_SymConst(mode, sym, symconst_type_align);
2580 static void init_ir_types(void);
2582 long fold_constant(const expression_t *expression)
2584 bool constant_folding_old = constant_folding;
2585 constant_folding = true;
2589 assert(is_constant_expression(expression));
2591 ir_graph *old_current_ir_graph = current_ir_graph;
2592 if (current_ir_graph == NULL) {
2593 current_ir_graph = get_const_code_irg();
2596 ir_node *cnst = expression_to_firm(expression);
2597 current_ir_graph = old_current_ir_graph;
2599 if (!is_Const(cnst)) {
2600 panic("couldn't fold constant\n");
2603 tarval *tv = get_Const_tarval(cnst);
2604 if (!tarval_is_long(tv)) {
2605 panic("result of constant folding is not integer\n");
2608 constant_folding = constant_folding_old;
2610 return get_tarval_long(tv);
2613 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2615 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2617 /* first try to fold a constant condition */
2618 if (is_constant_expression(expression->condition)) {
2619 long val = fold_constant(expression->condition);
2621 expression_t *true_expression = expression->true_expression;
2622 if (true_expression == NULL)
2623 true_expression = expression->condition;
2624 return expression_to_firm(true_expression);
2626 return expression_to_firm(expression->false_expression);
2630 ir_node *cur_block = get_cur_block();
2632 /* create the true block */
2633 ir_node *true_block = new_immBlock();
2635 ir_node *true_val = expression->true_expression != NULL ?
2636 expression_to_firm(expression->true_expression) : NULL;
2637 ir_node *true_jmp = new_Jmp();
2639 /* create the false block */
2640 ir_node *false_block = new_immBlock();
2642 ir_node *false_val = expression_to_firm(expression->false_expression);
2643 ir_node *false_jmp = new_Jmp();
2645 /* create the condition evaluation */
2646 set_cur_block(cur_block);
2647 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2648 if (expression->true_expression == NULL) {
2649 if (cond_expr != NULL) {
2650 true_val = cond_expr;
2652 /* Condition ended with a short circuit (&&, ||, !) operation.
2653 * Generate a "1" as value for the true branch. */
2654 ir_mode *const mode = mode_Is;
2655 true_val = new_Const(mode, get_mode_one(mode));
2658 mature_immBlock(true_block);
2659 mature_immBlock(false_block);
2661 /* create the common block */
2662 ir_node *in_cf[2] = { true_jmp, false_jmp };
2663 new_Block(2, in_cf);
2665 /* TODO improve static semantics, so either both or no values are NULL */
2666 if (true_val == NULL || false_val == NULL)
2669 ir_node *in[2] = { true_val, false_val };
2670 ir_mode *mode = get_irn_mode(true_val);
2671 assert(get_irn_mode(false_val) == mode);
2672 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2678 * Returns an IR-node representing the address of a field.
2680 static ir_node *select_addr(const select_expression_t *expression)
2682 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2684 ir_node *compound_addr = expression_to_firm(expression->compound);
2686 /* make sure the type is constructed */
2687 type_t *type = skip_typeref(expression->compound->base.type);
2688 if (is_type_pointer(type)) {
2689 type = type->pointer.points_to;
2691 (void) get_ir_type(type);
2693 declaration_t *entry = expression->compound_entry;
2694 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2695 ir_entity *entity = entry->v.entity;
2697 assert(entity != NULL);
2699 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2704 static ir_node *select_to_firm(const select_expression_t *expression)
2706 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2707 ir_node *addr = select_addr(expression);
2708 type_t *type = revert_automatic_type_conversion(
2709 (const expression_t*) expression);
2710 type = skip_typeref(type);
2712 declaration_t *entry = expression->compound_entry;
2713 type_t *entry_type = skip_typeref(entry->type);
2715 if (entry_type->kind == TYPE_BITFIELD) {
2716 return bitfield_extract_to_firm(expression, addr);
2719 return deref_address(dbgi, type, addr);
2722 /* Values returned by __builtin_classify_type. */
2723 typedef enum gcc_type_class
2729 enumeral_type_class,
2732 reference_type_class,
2736 function_type_class,
2747 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2749 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2755 const atomic_type_t *const atomic_type = &type->atomic;
2756 switch (atomic_type->akind) {
2757 /* should not be reached */
2758 case ATOMIC_TYPE_INVALID:
2762 /* gcc cannot do that */
2763 case ATOMIC_TYPE_VOID:
2764 tc = void_type_class;
2767 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2768 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2769 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2770 case ATOMIC_TYPE_SHORT:
2771 case ATOMIC_TYPE_USHORT:
2772 case ATOMIC_TYPE_INT:
2773 case ATOMIC_TYPE_UINT:
2774 case ATOMIC_TYPE_LONG:
2775 case ATOMIC_TYPE_ULONG:
2776 case ATOMIC_TYPE_LONGLONG:
2777 case ATOMIC_TYPE_ULONGLONG:
2778 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2779 tc = integer_type_class;
2782 case ATOMIC_TYPE_FLOAT:
2783 case ATOMIC_TYPE_DOUBLE:
2784 case ATOMIC_TYPE_LONG_DOUBLE:
2785 tc = real_type_class;
2788 panic("Unexpected atomic type in classify_type_to_firm().");
2791 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2792 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2793 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2794 case TYPE_ARRAY: /* gcc handles this as pointer */
2795 case TYPE_FUNCTION: /* gcc handles this as pointer */
2796 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2797 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2798 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2800 /* gcc handles this as integer */
2801 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2804 /* typedef/typeof should be skipped already */
2811 panic("unexpected TYPE classify_type_to_firm().");
2814 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2815 ir_mode *const mode = mode_int;
2816 tarval *const tv = new_tarval_from_long(tc, mode);
2817 return new_d_Const(dbgi, mode, tv);
2820 static ir_node *function_name_to_firm(
2821 const funcname_expression_t *const expr)
2823 switch(expr->kind) {
2824 case FUNCNAME_FUNCTION:
2825 case FUNCNAME_PRETTY_FUNCTION:
2826 case FUNCNAME_FUNCDNAME:
2827 if (current_function_name == NULL) {
2828 const source_position_t *const src_pos = &expr->base.source_position;
2829 const char *const name = current_function_decl->symbol->string;
2830 const string_t string = { name, strlen(name) + 1 };
2831 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2833 return current_function_name;
2834 case FUNCNAME_FUNCSIG:
2835 if (current_funcsig == NULL) {
2836 const source_position_t *const src_pos = &expr->base.source_position;
2837 ir_entity *ent = get_irg_entity(current_ir_graph);
2838 const char *const name = get_entity_ld_name(ent);
2839 const string_t string = { name, strlen(name) + 1 };
2840 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2842 return current_funcsig;
2844 panic("Unsupported function name");
2847 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2849 statement_t *statement = expr->statement;
2851 assert(statement->kind == STATEMENT_COMPOUND);
2852 return compound_statement_to_firm(&statement->compound);
2855 static ir_node *va_start_expression_to_firm(
2856 const va_start_expression_t *const expr)
2858 ir_type *const method_type = get_ir_type(current_function_decl->type);
2859 int const n = get_method_n_params(method_type) - 1;
2860 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2861 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2862 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2863 ir_node *const no_mem = new_NoMem();
2864 ir_node *const arg_sel =
2865 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2867 ir_node *const cnst = get_type_size(expr->parameter->type);
2868 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2869 set_value_for_expression(expr->ap, add);
2874 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2876 type_t *const type = expr->base.type;
2877 expression_t *const ap_expr = expr->ap;
2878 ir_node *const ap_addr = expression_to_addr(ap_expr);
2879 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2880 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2881 ir_node *const res = deref_address(dbgi, type, ap);
2883 ir_node *const cnst = get_type_size(expr->base.type);
2884 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2886 set_value_for_expression_addr(ap_expr, add, ap_addr);
2891 static ir_node *dereference_addr(const unary_expression_t *const expression)
2893 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2894 return expression_to_firm(expression->value);
2898 * Returns a IR-node representing an lvalue of the given expression.
2900 static ir_node *expression_to_addr(const expression_t *expression)
2902 switch(expression->kind) {
2903 case EXPR_REFERENCE:
2904 return reference_addr(&expression->reference);
2905 case EXPR_ARRAY_ACCESS:
2906 return array_access_addr(&expression->array_access);
2908 return select_addr(&expression->select);
2910 return call_expression_to_firm(&expression->call);
2911 case EXPR_UNARY_DEREFERENCE: {
2912 return dereference_addr(&expression->unary);
2917 panic("trying to get address of non-lvalue");
2920 static ir_node *builtin_constant_to_firm(
2921 const builtin_constant_expression_t *expression)
2923 ir_mode *mode = get_ir_mode(expression->base.type);
2926 if (is_constant_expression(expression->value)) {
2931 return new_Const_long(mode, v);
2934 static ir_node *builtin_prefetch_to_firm(
2935 const builtin_prefetch_expression_t *expression)
2937 ir_node *adr = expression_to_firm(expression->adr);
2938 /* no Firm support for prefetch yet */
2944 * creates firm nodes for an expression. The difference between this function
2945 * and expression_to_firm is, that this version might produce mode_b nodes
2946 * instead of mode_Is.
2948 static ir_node *_expression_to_firm(const expression_t *expression)
2951 if (!constant_folding) {
2952 assert(!expression->base.transformed);
2953 ((expression_t*) expression)->base.transformed = true;
2957 switch(expression->kind) {
2958 case EXPR_CHARACTER_CONSTANT:
2959 return character_constant_to_firm(&expression->conste);
2960 case EXPR_WIDE_CHARACTER_CONSTANT:
2961 return wide_character_constant_to_firm(&expression->conste);
2963 return const_to_firm(&expression->conste);
2964 case EXPR_STRING_LITERAL:
2965 return string_literal_to_firm(&expression->string);
2966 case EXPR_WIDE_STRING_LITERAL:
2967 return wide_string_literal_to_firm(&expression->wide_string);
2968 case EXPR_REFERENCE:
2969 return reference_expression_to_firm(&expression->reference);
2971 return call_expression_to_firm(&expression->call);
2973 return unary_expression_to_firm(&expression->unary);
2975 return binary_expression_to_firm(&expression->binary);
2976 case EXPR_ARRAY_ACCESS:
2977 return array_access_to_firm(&expression->array_access);
2979 return sizeof_to_firm(&expression->typeprop);
2981 return alignof_to_firm(&expression->typeprop);
2982 case EXPR_CONDITIONAL:
2983 return conditional_to_firm(&expression->conditional);
2985 return select_to_firm(&expression->select);
2986 case EXPR_CLASSIFY_TYPE:
2987 return classify_type_to_firm(&expression->classify_type);
2989 return function_name_to_firm(&expression->funcname);
2990 case EXPR_STATEMENT:
2991 return statement_expression_to_firm(&expression->statement);
2993 return va_start_expression_to_firm(&expression->va_starte);
2995 return va_arg_expression_to_firm(&expression->va_arge);
2996 case EXPR_BUILTIN_SYMBOL:
2997 panic("unimplemented expression found");
2998 case EXPR_BUILTIN_CONSTANT_P:
2999 return builtin_constant_to_firm(&expression->builtin_constant);
3000 case EXPR_BUILTIN_PREFETCH:
3001 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3003 return offsetof_to_firm(&expression->offsetofe);
3004 case EXPR_COMPOUND_LITERAL:
3005 return compound_literal_to_firm(&expression->compound_literal);
3011 panic("invalid expression found");
3014 static bool produces_mode_b(const expression_t *expression)
3016 switch (expression->kind) {
3017 case EXPR_BINARY_EQUAL:
3018 case EXPR_BINARY_NOTEQUAL:
3019 case EXPR_BINARY_LESS:
3020 case EXPR_BINARY_LESSEQUAL:
3021 case EXPR_BINARY_GREATER:
3022 case EXPR_BINARY_GREATEREQUAL:
3023 case EXPR_BINARY_ISGREATER:
3024 case EXPR_BINARY_ISGREATEREQUAL:
3025 case EXPR_BINARY_ISLESS:
3026 case EXPR_BINARY_ISLESSEQUAL:
3027 case EXPR_BINARY_ISLESSGREATER:
3028 case EXPR_BINARY_ISUNORDERED:
3029 case EXPR_UNARY_NOT:
3032 case EXPR_BINARY_BUILTIN_EXPECT:
3033 return produces_mode_b(expression->binary.left);
3034 case EXPR_BINARY_COMMA:
3035 return produces_mode_b(expression->binary.right);
3042 static ir_node *expression_to_firm(const expression_t *expression)
3044 if (!produces_mode_b(expression)) {
3045 ir_node *res = _expression_to_firm(expression);
3046 assert(res == NULL || get_irn_mode(res) != mode_b);
3050 if (is_constant_expression(expression)) {
3051 ir_node *res = _expression_to_firm(expression);
3052 ir_mode *mode = get_ir_mode(expression->base.type);
3053 assert(is_Const(res));
3054 if (is_Const_null(res)) {
3055 return new_Const_long(mode, 0);
3057 return new_Const_long(mode, 1);
3061 /* we have to produce a 0/1 from the mode_b expression */
3062 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3063 return produce_condition_result(expression, dbgi);
3067 * create a short-circuit expression evaluation that tries to construct
3068 * efficient control flow structures for &&, || and ! expressions
3070 static ir_node *create_condition_evaluation(const expression_t *expression,
3071 ir_node *true_block,
3072 ir_node *false_block)
3074 switch(expression->kind) {
3075 case EXPR_UNARY_NOT: {
3076 const unary_expression_t *unary_expression = &expression->unary;
3077 create_condition_evaluation(unary_expression->value, false_block,
3081 case EXPR_BINARY_LOGICAL_AND: {
3082 const binary_expression_t *binary_expression = &expression->binary;
3084 ir_node *cur_block = get_cur_block();
3085 ir_node *extra_block = new_immBlock();
3086 set_cur_block(cur_block);
3087 create_condition_evaluation(binary_expression->left, extra_block,
3089 mature_immBlock(extra_block);
3090 set_cur_block(extra_block);
3091 create_condition_evaluation(binary_expression->right, true_block,
3095 case EXPR_BINARY_LOGICAL_OR: {
3096 const binary_expression_t *binary_expression = &expression->binary;
3098 ir_node *cur_block = get_cur_block();
3099 ir_node *extra_block = new_immBlock();
3100 set_cur_block(cur_block);
3101 create_condition_evaluation(binary_expression->left, true_block,
3103 mature_immBlock(extra_block);
3104 set_cur_block(extra_block);
3105 create_condition_evaluation(binary_expression->right, true_block,
3113 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3114 ir_node *cond_expr = _expression_to_firm(expression);
3115 ir_node *condition = create_conv(NULL, cond_expr, mode_b);
3116 ir_node *cond = new_d_Cond(dbgi, condition);
3117 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3118 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3120 /* set branch prediction info based on __builtin_expect */
3121 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3122 long cnst = fold_constant(expression->binary.right);
3123 cond_jmp_predicate pred;
3126 pred = COND_JMP_PRED_FALSE;
3128 pred = COND_JMP_PRED_TRUE;
3130 set_Cond_jmp_pred(cond, pred);
3133 add_immBlock_pred(true_block, true_proj);
3134 if (false_block != NULL) {
3135 add_immBlock_pred(false_block, false_proj);
3138 set_cur_block(NULL);
3144 static void create_declaration_entity(declaration_t *declaration,
3145 declaration_kind_t declaration_kind,
3146 ir_type *parent_type)
3148 type_t *const type = skip_typeref(declaration->type);
3149 if (is_type_function(type)) {
3150 (void) get_function_entity(declaration);
3154 ident *const id = new_id_from_str(declaration->symbol->string);
3155 ir_type *const irtype = get_ir_type(type);
3156 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3157 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3159 declaration->declaration_kind = (unsigned char) declaration_kind;
3160 declaration->v.entity = entity;
3161 set_entity_variability(entity, variability_uninitialized);
3162 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3163 if (parent_type == get_tls_type())
3164 set_entity_allocation(entity, allocation_automatic);
3165 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3166 set_entity_allocation(entity, allocation_static);
3168 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3169 set_entity_volatility(entity, volatility_is_volatile);
3174 typedef struct type_path_entry_t type_path_entry_t;
3175 struct type_path_entry_t {
3177 ir_initializer_t *initializer;
3179 declaration_t *compound_entry;
3182 typedef struct type_path_t type_path_t;
3183 struct type_path_t {
3184 type_path_entry_t *path;
3189 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3191 size_t len = ARR_LEN(path->path);
3193 for(size_t i = 0; i < len; ++i) {
3194 const type_path_entry_t *entry = & path->path[i];
3196 type_t *type = skip_typeref(entry->type);
3197 if (is_type_compound(type)) {
3198 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3199 } else if (is_type_array(type)) {
3200 fprintf(stderr, "[%zd]", entry->index);
3202 fprintf(stderr, "-INVALID-");
3205 fprintf(stderr, " (");
3206 print_type(path->top_type);
3207 fprintf(stderr, ")");
3210 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3212 size_t len = ARR_LEN(path->path);
3214 return & path->path[len-1];
3217 static type_path_entry_t *append_to_type_path(type_path_t *path)
3219 size_t len = ARR_LEN(path->path);
3220 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3222 type_path_entry_t *result = & path->path[len];
3223 memset(result, 0, sizeof(result[0]));
3227 static size_t get_compound_size(const compound_type_t *type)
3229 declaration_t *declaration = type->declaration;
3230 declaration_t *member = declaration->scope.declarations;
3232 for( ; member != NULL; member = member->next) {
3235 /* TODO: cache results? */
3240 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3242 type_t *orig_top_type = path->top_type;
3243 type_t *top_type = skip_typeref(orig_top_type);
3245 assert(is_type_compound(top_type) || is_type_array(top_type));
3247 if (ARR_LEN(path->path) == 0) {
3250 type_path_entry_t *top = get_type_path_top(path);
3251 ir_initializer_t *initializer = top->initializer;
3252 return get_initializer_compound_value(initializer, top->index);
3256 static void descend_into_subtype(type_path_t *path)
3258 type_t *orig_top_type = path->top_type;
3259 type_t *top_type = skip_typeref(orig_top_type);
3261 assert(is_type_compound(top_type) || is_type_array(top_type));
3263 ir_initializer_t *initializer = get_initializer_entry(path);
3265 type_path_entry_t *top = append_to_type_path(path);
3266 top->type = top_type;
3270 if (is_type_compound(top_type)) {
3271 declaration_t *declaration = top_type->compound.declaration;
3272 declaration_t *entry = declaration->scope.declarations;
3274 top->compound_entry = entry;
3276 len = get_compound_size(&top_type->compound);
3278 path->top_type = entry->type;
3280 assert(is_type_array(top_type));
3281 assert(top_type->array.size > 0);
3284 path->top_type = top_type->array.element_type;
3285 len = top_type->array.size;
3287 if (initializer == NULL
3288 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3289 initializer = create_initializer_compound(len);
3290 /* we have to set the entry at the 2nd latest path entry... */
3291 size_t path_len = ARR_LEN(path->path);
3292 assert(path_len >= 1);
3294 type_path_entry_t *entry = & path->path[path_len-2];
3295 ir_initializer_t *tinitializer = entry->initializer;
3296 set_initializer_compound_value(tinitializer, entry->index,
3300 top->initializer = initializer;
3303 static void ascend_from_subtype(type_path_t *path)
3305 type_path_entry_t *top = get_type_path_top(path);
3307 path->top_type = top->type;
3309 size_t len = ARR_LEN(path->path);
3310 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3313 static void walk_designator(type_path_t *path, const designator_t *designator)
3315 /* designators start at current object type */
3316 ARR_RESIZE(type_path_entry_t, path->path, 1);
3318 for( ; designator != NULL; designator = designator->next) {
3319 type_path_entry_t *top = get_type_path_top(path);
3320 type_t *orig_type = top->type;
3321 type_t *type = skip_typeref(orig_type);
3323 if (designator->symbol != NULL) {
3324 assert(is_type_compound(type));
3326 symbol_t *symbol = designator->symbol;
3328 declaration_t *declaration = type->compound.declaration;
3329 declaration_t *iter = declaration->scope.declarations;
3330 for( ; iter != NULL; iter = iter->next, ++index) {
3331 if (iter->symbol == symbol) {
3335 assert(iter != NULL);
3337 top->type = orig_type;
3338 top->compound_entry = iter;
3340 orig_type = iter->type;
3342 expression_t *array_index = designator->array_index;
3343 assert(designator->array_index != NULL);
3344 assert(is_type_array(type));
3345 assert(is_type_valid(array_index->base.type));
3347 long index = fold_constant(array_index);
3350 if (type->array.size_constant == 1) {
3351 long array_size = type->array.size;
3352 assert(index < array_size);
3356 top->type = orig_type;
3357 top->index = (size_t) index;
3358 orig_type = type->array.element_type;
3360 path->top_type = orig_type;
3362 if (designator->next != NULL) {
3363 descend_into_subtype(path);
3367 path->invalid = false;
3370 static void advance_current_object(type_path_t *path)
3372 if (path->invalid) {
3373 /* TODO: handle this... */
3374 panic("invalid initializer in ast2firm (excessive elements)");
3378 type_path_entry_t *top = get_type_path_top(path);
3380 type_t *type = skip_typeref(top->type);
3381 if (is_type_union(type)) {
3382 top->compound_entry = NULL;
3383 } else if (is_type_struct(type)) {
3384 declaration_t *entry = top->compound_entry;
3387 entry = entry->next;
3388 top->compound_entry = entry;
3389 if (entry != NULL) {
3390 path->top_type = entry->type;
3394 assert(is_type_array(type));
3397 if (!type->array.size_constant || top->index < type->array.size) {
3402 /* we're past the last member of the current sub-aggregate, try if we
3403 * can ascend in the type hierarchy and continue with another subobject */
3404 size_t len = ARR_LEN(path->path);
3407 ascend_from_subtype(path);
3408 advance_current_object(path);
3410 path->invalid = true;
3415 static ir_initializer_t *create_ir_initializer(
3416 const initializer_t *initializer, type_t *type);
3418 static ir_initializer_t *create_ir_initializer_value(
3419 const initializer_value_t *initializer)
3421 if (is_type_compound(initializer->value->base.type)) {
3422 panic("initializer creation for compounds not implemented yet");
3424 ir_node *value = expression_to_firm(initializer->value);
3425 return create_initializer_const(value);
3428 static ir_initializer_t *create_ir_initializer_list(
3429 const initializer_list_t *initializer, type_t *type)
3432 memset(&path, 0, sizeof(path));
3433 path.top_type = type;
3434 path.path = NEW_ARR_F(type_path_entry_t, 0);
3436 descend_into_subtype(&path);
3438 for(size_t i = 0; i < initializer->len; ++i) {
3439 const initializer_t *sub_initializer = initializer->initializers[i];
3441 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3442 walk_designator(&path, sub_initializer->designator.designator);
3446 if (sub_initializer->kind == INITIALIZER_VALUE) {
3447 /* we might have to descend into types until we're at a scalar
3450 type_t *orig_top_type = path.top_type;
3451 type_t *top_type = skip_typeref(orig_top_type);
3453 if (is_type_scalar(top_type))
3455 descend_into_subtype(&path);
3459 ir_initializer_t *sub_irinitializer
3460 = create_ir_initializer(sub_initializer, path.top_type);
3462 size_t path_len = ARR_LEN(path.path);
3463 assert(path_len >= 1);
3464 type_path_entry_t *entry = & path.path[path_len-1];
3465 ir_initializer_t *tinitializer = entry->initializer;
3466 set_initializer_compound_value(tinitializer, entry->index,
3469 advance_current_object(&path);
3472 assert(ARR_LEN(path.path) >= 1);
3473 ir_initializer_t *result = path.path[0].initializer;
3474 DEL_ARR_F(path.path);
3479 static ir_initializer_t *create_ir_initializer_string(
3480 const initializer_string_t *initializer, type_t *type)
3482 type = skip_typeref(type);
3484 size_t string_len = initializer->string.size;
3485 assert(type->kind == TYPE_ARRAY);
3486 assert(type->array.size_constant);
3487 size_t len = type->array.size;
3488 ir_initializer_t *irinitializer = create_initializer_compound(len);
3490 const char *string = initializer->string.begin;
3491 ir_mode *mode = get_ir_mode(type->array.element_type);
3493 for(size_t i = 0; i < len; ++i) {
3498 tarval *tv = new_tarval_from_long(c, mode);
3499 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3501 set_initializer_compound_value(irinitializer, i, char_initializer);
3504 return irinitializer;
3507 static ir_initializer_t *create_ir_initializer_wide_string(
3508 const initializer_wide_string_t *initializer, type_t *type)
3510 size_t string_len = initializer->string.size;
3511 assert(type->kind == TYPE_ARRAY);
3512 assert(type->array.size_constant);
3513 size_t len = type->array.size;
3514 ir_initializer_t *irinitializer = create_initializer_compound(len);
3516 const wchar_rep_t *string = initializer->string.begin;
3517 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3519 for(size_t i = 0; i < len; ++i) {
3521 if (i < string_len) {
3524 tarval *tv = new_tarval_from_long(c, mode);
3525 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3527 set_initializer_compound_value(irinitializer, i, char_initializer);
3530 return irinitializer;
3533 static ir_initializer_t *create_ir_initializer(
3534 const initializer_t *initializer, type_t *type)
3536 switch(initializer->kind) {
3537 case INITIALIZER_STRING:
3538 return create_ir_initializer_string(&initializer->string, type);
3540 case INITIALIZER_WIDE_STRING:
3541 return create_ir_initializer_wide_string(&initializer->wide_string,
3544 case INITIALIZER_LIST:
3545 return create_ir_initializer_list(&initializer->list, type);
3547 case INITIALIZER_VALUE:
3548 return create_ir_initializer_value(&initializer->value);
3550 case INITIALIZER_DESIGNATOR:
3551 panic("unexpected designator initializer found");
3553 panic("unknown initializer");
3556 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3559 if (is_atomic_type(type)) {
3560 ir_mode *mode = get_type_mode(type);
3561 tarval *zero = get_mode_null(mode);
3562 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3564 /* TODO: bitfields */
3565 ir_node *mem = get_store();
3566 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3567 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3570 assert(is_compound_type(type));
3573 if (is_Array_type(type)) {
3574 assert(has_array_upper_bound(type, 0));
3575 n_members = get_array_upper_bound_int(type, 0);
3577 n_members = get_compound_n_members(type);
3580 for(int i = 0; i < n_members; ++i) {
3583 if (is_Array_type(type)) {
3584 ir_entity *entity = get_array_element_entity(type);
3585 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3586 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3587 ir_node *in[1] = { cnst };
3588 irtype = get_array_element_type(type);
3589 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3591 ir_entity *member = get_compound_member(type, i);
3593 irtype = get_entity_type(member);
3594 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3597 create_dynamic_null_initializer(irtype, dbgi, addr);
3602 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3603 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3605 switch(get_initializer_kind(initializer)) {
3606 case IR_INITIALIZER_NULL: {
3607 create_dynamic_null_initializer(type, dbgi, base_addr);
3610 case IR_INITIALIZER_CONST: {
3611 ir_node *node = get_initializer_const_value(initializer);
3612 ir_mode *mode = get_irn_mode(node);
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, node);
3618 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3622 case IR_INITIALIZER_TARVAL: {
3623 tarval *tv = get_initializer_tarval_value(initializer);
3624 ir_mode *mode = get_tarval_mode(tv);
3625 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3626 assert(get_type_mode(type) == mode);
3628 /* TODO: bitfields... */
3629 ir_node *mem = get_store();
3630 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3631 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3635 case IR_INITIALIZER_COMPOUND: {
3636 assert(is_compound_type(type));
3638 if (is_Array_type(type)) {
3639 assert(has_array_upper_bound(type, 0));
3640 n_members = get_array_upper_bound_int(type, 0);
3642 n_members = get_compound_n_members(type);
3645 if (get_initializer_compound_n_entries(initializer)
3646 != (unsigned) n_members)
3647 panic("initializer doesn't match compound type");
3649 for(int i = 0; i < n_members; ++i) {
3652 if (is_Array_type(type)) {
3653 ir_entity *entity = get_array_element_entity(type);
3654 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3655 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3656 ir_node *in[1] = { cnst };
3657 irtype = get_array_element_type(type);
3658 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3660 ir_entity *member = get_compound_member(type, i);
3662 irtype = get_entity_type(member);
3663 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3666 ir_initializer_t *sub_init
3667 = get_initializer_compound_value(initializer, i);
3669 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3675 panic("invalid IR_INITIALIZER found");
3678 static void create_dynamic_initializer(ir_initializer_t *initializer,
3679 dbg_info *dbgi, ir_entity *entity)
3681 ir_node *frame = get_local_frame(entity);
3682 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3683 ir_type *type = get_entity_type(entity);
3685 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3688 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3689 ir_entity *entity, type_t *type)
3691 ir_node *memory = get_store();
3692 ir_node *nomem = new_NoMem();
3693 ir_node *frame = get_irg_frame(current_ir_graph);
3694 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3696 if (initializer->kind == INITIALIZER_VALUE) {
3697 initializer_value_t *initializer_value = &initializer->value;
3699 ir_node *value = expression_to_firm(initializer_value->value);
3700 type = skip_typeref(type);
3701 assign_value(dbgi, addr, type, value);
3705 if (!is_constant_initializer(initializer)) {
3706 ir_initializer_t *irinitializer
3707 = create_ir_initializer(initializer, type);
3709 create_dynamic_initializer(irinitializer, dbgi, entity);
3713 /* create the ir_initializer */
3714 ir_graph *const old_current_ir_graph = current_ir_graph;
3715 current_ir_graph = get_const_code_irg();
3717 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3719 assert(current_ir_graph == get_const_code_irg());
3720 current_ir_graph = old_current_ir_graph;
3722 /* create a "template" entity which is copied to the entity on the stack */
3723 ident *const id = id_unique("initializer.%u");
3724 ir_type *const irtype = get_ir_type(type);
3725 ir_type *const global_type = get_glob_type();
3726 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3727 set_entity_ld_ident(init_entity, id);
3729 set_entity_variability(init_entity, variability_initialized);
3730 set_entity_visibility(init_entity, visibility_local);
3731 set_entity_allocation(init_entity, allocation_static);
3733 set_entity_initializer(init_entity, irinitializer);
3735 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3736 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3738 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3739 set_store(copyb_mem);
3742 static void create_initializer_local_variable_entity(declaration_t *declaration)
3744 initializer_t *initializer = declaration->init.initializer;
3745 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3746 ir_entity *entity = declaration->v.entity;
3747 type_t *type = declaration->type;
3748 create_local_initializer(initializer, dbgi, entity, type);
3751 static void create_declaration_initializer(declaration_t *declaration)
3753 initializer_t *initializer = declaration->init.initializer;
3754 if (initializer == NULL)
3757 declaration_kind_t declaration_kind
3758 = (declaration_kind_t) declaration->declaration_kind;
3759 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3760 create_initializer_local_variable_entity(declaration);
3764 type_t *type = skip_typeref(declaration->type);
3766 if (initializer->kind == INITIALIZER_VALUE) {
3767 initializer_value_t *initializer_value = &initializer->value;
3769 = get_dbg_info(&declaration->source_position);
3771 ir_node *value = expression_to_firm(initializer_value->value);
3772 value = do_strict_conv(dbgi, value);
3774 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3775 set_value(declaration->v.value_number, value);
3777 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3779 ir_entity *entity = declaration->v.entity;
3781 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3782 set_entity_variability(entity, variability_constant);
3784 set_entity_variability(entity, variability_initialized);
3786 set_atomic_ent_value(entity, value);
3789 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3790 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3792 ir_entity *entity = declaration->v.entity;
3793 ir_initializer_t *irinitializer
3794 = create_ir_initializer(initializer, type);
3796 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3797 set_entity_variability(entity, variability_constant);
3799 set_entity_variability(entity, variability_initialized);
3801 set_entity_initializer(entity, irinitializer);
3805 static void create_variable_length_array(declaration_t *declaration)
3807 /* initializers are not allowed for VLAs */
3808 assert(declaration->init.initializer == NULL);
3810 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3811 declaration->v.vla_base = NULL;
3813 /* TODO: record VLA somewhere so we create the free node when we leave
3817 static void allocate_variable_length_array(declaration_t *declaration)
3819 /* initializers are not allowed for VLAs */
3820 assert(declaration->init.initializer == NULL);
3821 assert(get_cur_block() != NULL);
3823 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3824 type_t *type = declaration->type;
3825 ir_type *el_type = get_ir_type(type->array.element_type);
3827 /* make sure size_node is calculated */
3828 get_type_size(type);
3829 ir_node *elems = type->array.size_node;
3830 ir_node *mem = get_store();
3831 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3833 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3834 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3837 assert(declaration->declaration_kind
3838 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3839 declaration->v.vla_base = addr;
3843 * Creates a Firm local variable from a declaration.
3845 static void create_local_variable(declaration_t *declaration)
3847 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3849 bool needs_entity = declaration->address_taken;
3850 type_t *type = skip_typeref(declaration->type);
3852 /* is it a variable length array? */
3853 if (is_type_array(type) && !type->array.size_constant) {
3854 create_variable_length_array(declaration);
3856 } else if (is_type_array(type) || is_type_compound(type)) {
3857 needs_entity = true;
3858 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3859 needs_entity = true;
3863 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3864 create_declaration_entity(declaration,
3865 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3868 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3869 declaration->v.value_number = next_value_number_function;
3870 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3871 ++next_value_number_function;
3875 static void create_local_static_variable(declaration_t *declaration)
3877 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3879 type_t *const type = skip_typeref(declaration->type);
3880 ir_type *const global_type = get_glob_type();
3881 ir_type *const irtype = get_ir_type(type);
3882 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3884 size_t l = strlen(declaration->symbol->string);
3885 char buf[l + sizeof(".%u")];
3886 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3887 ident *const id = id_unique(buf);
3889 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3891 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3892 set_entity_volatility(entity, volatility_is_volatile);
3895 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3896 declaration->v.entity = entity;
3897 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3898 set_entity_variability(entity, variability_uninitialized);
3899 set_entity_visibility(entity, visibility_local);
3900 set_entity_allocation(entity, allocation_static);
3902 ir_graph *const old_current_ir_graph = current_ir_graph;
3903 current_ir_graph = get_const_code_irg();
3905 create_declaration_initializer(declaration);
3907 assert(current_ir_graph == get_const_code_irg());
3908 current_ir_graph = old_current_ir_graph;
3913 static void return_statement_to_firm(return_statement_t *statement)
3915 if (get_cur_block() == NULL)
3918 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3919 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3924 if (get_method_n_ress(func_irtype) > 0) {
3925 ir_type *res_type = get_method_res_type(func_irtype, 0);
3927 if (statement->value != NULL) {
3928 ir_node *node = expression_to_firm(statement->value);
3929 node = do_strict_conv(dbgi, node);
3933 if (is_compound_type(res_type)) {
3936 mode = get_type_mode(res_type);
3938 in[0] = new_Unknown(mode);
3942 /* build return_value for its side effects */
3943 if (statement->value != NULL) {
3944 expression_to_firm(statement->value);
3949 ir_node *store = get_store();
3950 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3952 ir_node *end_block = get_irg_end_block(current_ir_graph);
3953 add_immBlock_pred(end_block, ret);
3955 set_cur_block(NULL);
3958 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3960 if (get_cur_block() == NULL)
3963 return expression_to_firm(statement->expression);
3966 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3968 declaration_t *declaration = compound->scope.declarations;
3969 for( ; declaration != NULL; declaration = declaration->next) {
3970 create_local_declaration(declaration);
3973 ir_node *result = NULL;
3974 statement_t *statement = compound->statements;
3975 for( ; statement != NULL; statement = statement->base.next) {
3976 if (statement->base.next == NULL
3977 && statement->kind == STATEMENT_EXPRESSION) {
3978 result = expression_statement_to_firm(
3979 &statement->expression);
3982 statement_to_firm(statement);
3988 static void create_global_variable(declaration_t *declaration)
3992 switch ((storage_class_tag_t)declaration->storage_class) {
3993 case STORAGE_CLASS_STATIC:
3994 vis = visibility_local;
3997 case STORAGE_CLASS_EXTERN:
3998 vis = visibility_external_allocated;
4001 case STORAGE_CLASS_NONE:
4002 vis = visibility_external_visible;
4005 case STORAGE_CLASS_THREAD:
4006 vis = visibility_external_visible;
4009 case STORAGE_CLASS_THREAD_EXTERN:
4010 vis = visibility_external_allocated;
4013 case STORAGE_CLASS_THREAD_STATIC:
4014 vis = visibility_local;
4018 var_type = get_tls_type();
4022 var_type = get_glob_type();
4026 create_declaration_entity(declaration,
4027 DECLARATION_KIND_GLOBAL_VARIABLE,
4029 if (!is_type_function(skip_typeref(declaration->type))) {
4030 set_entity_visibility(declaration->v.entity, vis);
4035 case STORAGE_CLASS_TYPEDEF:
4036 case STORAGE_CLASS_AUTO:
4037 case STORAGE_CLASS_REGISTER:
4038 case STORAGE_CLASS_ENUM_ENTRY:
4041 panic("Invalid storage class for global variable");
4044 static void create_local_declaration(declaration_t *declaration)
4046 if (declaration->namespc != NAMESPACE_NORMAL)
4048 /* construct type */
4049 (void) get_ir_type(declaration->type);
4050 if (declaration->symbol == NULL) {
4054 type_t *type = skip_typeref(declaration->type);
4056 switch ((storage_class_tag_t) declaration->storage_class) {
4057 case STORAGE_CLASS_STATIC:
4058 create_local_static_variable(declaration);
4060 case STORAGE_CLASS_EXTERN:
4061 create_global_variable(declaration);
4062 create_declaration_initializer(declaration);
4064 case STORAGE_CLASS_NONE:
4065 case STORAGE_CLASS_AUTO:
4066 case STORAGE_CLASS_REGISTER:
4067 if (is_type_function(type)) {
4068 if (declaration->init.statement != NULL) {
4069 panic("nested functions not supported yet");
4071 get_function_entity(declaration);
4074 create_local_variable(declaration);
4077 case STORAGE_CLASS_ENUM_ENTRY:
4078 /* should already be handled */
4079 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4081 case STORAGE_CLASS_TYPEDEF:
4082 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4084 case STORAGE_CLASS_THREAD:
4085 case STORAGE_CLASS_THREAD_EXTERN:
4086 case STORAGE_CLASS_THREAD_STATIC:
4089 panic("invalid storage class found");
4092 static void initialize_local_declaration(declaration_t *declaration)
4094 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4097 switch ((declaration_kind_t) declaration->declaration_kind) {
4098 case DECLARATION_KIND_LOCAL_VARIABLE:
4099 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4100 create_declaration_initializer(declaration);
4103 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4104 allocate_variable_length_array(declaration);
4107 case DECLARATION_KIND_LABEL_BLOCK:
4108 case DECLARATION_KIND_COMPOUND_MEMBER:
4109 case DECLARATION_KIND_GLOBAL_VARIABLE:
4110 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4111 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4112 case DECLARATION_KIND_FUNCTION:
4113 case DECLARATION_KIND_TYPE:
4114 case DECLARATION_KIND_ENUM_ENTRY:
4117 case DECLARATION_KIND_UNKNOWN:
4118 panic("can't initialize unknwon declaration");
4120 panic("invalid declaration kind");
4123 static void declaration_statement_to_firm(declaration_statement_t *statement)
4125 declaration_t *declaration = statement->declarations_begin;
4126 declaration_t *end = statement->declarations_end->next;
4127 for( ; declaration != end; declaration = declaration->next) {
4128 if (declaration->namespc != NAMESPACE_NORMAL)
4130 initialize_local_declaration(declaration);
4134 static void if_statement_to_firm(if_statement_t *statement)
4136 ir_node *cur_block = get_cur_block();
4138 ir_node *fallthrough_block = NULL;
4140 /* the true (blocks) */
4141 ir_node *true_block = NULL;
4142 if (statement->true_statement != NULL) {
4143 true_block = new_immBlock();
4144 statement_to_firm(statement->true_statement);
4145 if (get_cur_block() != NULL) {
4146 ir_node *jmp = new_Jmp();
4147 if (fallthrough_block == NULL)
4148 fallthrough_block = new_immBlock();
4149 add_immBlock_pred(fallthrough_block, jmp);
4153 /* the false (blocks) */
4154 ir_node *false_block = NULL;
4155 if (statement->false_statement != NULL) {
4156 false_block = new_immBlock();
4158 statement_to_firm(statement->false_statement);
4159 if (get_cur_block() != NULL) {
4160 ir_node *jmp = new_Jmp();
4161 if (fallthrough_block == NULL)
4162 fallthrough_block = new_immBlock();
4163 add_immBlock_pred(fallthrough_block, jmp);
4167 /* create the condition */
4168 if (cur_block != NULL) {
4169 if (true_block == NULL || false_block == NULL) {
4170 if (fallthrough_block == NULL)
4171 fallthrough_block = new_immBlock();
4172 if (true_block == NULL)
4173 true_block = fallthrough_block;
4174 if (false_block == NULL)
4175 false_block = fallthrough_block;
4178 set_cur_block(cur_block);
4179 create_condition_evaluation(statement->condition, true_block,
4183 mature_immBlock(true_block);
4184 if (false_block != fallthrough_block && false_block != NULL) {
4185 mature_immBlock(false_block);
4187 if (fallthrough_block != NULL) {
4188 mature_immBlock(fallthrough_block);
4191 set_cur_block(fallthrough_block);
4194 static void while_statement_to_firm(while_statement_t *statement)
4196 ir_node *jmp = NULL;
4197 if (get_cur_block() != NULL) {
4201 /* create the header block */
4202 ir_node *header_block = new_immBlock();
4204 add_immBlock_pred(header_block, jmp);
4208 ir_node *old_continue_label = continue_label;
4209 ir_node *old_break_label = break_label;
4210 continue_label = header_block;
4213 ir_node *body_block = new_immBlock();
4214 statement_to_firm(statement->body);
4215 ir_node *false_block = break_label;
4217 assert(continue_label == header_block);
4218 continue_label = old_continue_label;
4219 break_label = old_break_label;
4221 if (get_cur_block() != NULL) {
4223 add_immBlock_pred(header_block, jmp);
4226 /* shortcut for while(true) */
4227 if (is_constant_expression(statement->condition)
4228 && fold_constant(statement->condition) != 0) {
4229 set_cur_block(header_block);
4230 ir_node *header_jmp = new_Jmp();
4231 add_immBlock_pred(body_block, header_jmp);
4233 keep_alive(body_block);
4234 set_cur_block(body_block);
4235 keep_alive(get_store());
4237 if (false_block == NULL) {
4238 false_block = new_immBlock();
4241 /* create the condition */
4242 set_cur_block(header_block);
4244 create_condition_evaluation(statement->condition, body_block,
4248 mature_immBlock(body_block);
4249 mature_immBlock(header_block);
4250 if (false_block != NULL) {
4251 mature_immBlock(false_block);
4254 set_cur_block(false_block);
4257 static void do_while_statement_to_firm(do_while_statement_t *statement)
4259 ir_node *jmp = NULL;
4260 if (get_cur_block() != NULL) {
4264 /* create the header block */
4265 ir_node *header_block = new_immBlock();
4268 ir_node *body_block = new_immBlock();
4270 add_immBlock_pred(body_block, jmp);
4273 ir_node *old_continue_label = continue_label;
4274 ir_node *old_break_label = break_label;
4275 continue_label = header_block;
4278 statement_to_firm(statement->body);
4279 ir_node *false_block = break_label;
4281 assert(continue_label == header_block);
4282 continue_label = old_continue_label;
4283 break_label = old_break_label;
4285 if (get_cur_block() != NULL) {
4286 ir_node *body_jmp = new_Jmp();
4287 add_immBlock_pred(header_block, body_jmp);
4288 mature_immBlock(header_block);
4291 if (false_block == NULL) {
4292 false_block = new_immBlock();
4295 /* create the condition */
4296 set_cur_block(header_block);
4298 create_condition_evaluation(statement->condition, body_block, false_block);
4299 mature_immBlock(body_block);
4300 mature_immBlock(header_block);
4301 if (false_block != NULL) {
4302 mature_immBlock(false_block);
4305 set_cur_block(false_block);
4308 static void for_statement_to_firm(for_statement_t *statement)
4310 ir_node *jmp = NULL;
4312 /* create declarations */
4313 declaration_t *declaration = statement->scope.declarations;
4314 for( ; declaration != NULL; declaration = declaration->next) {
4315 create_local_declaration(declaration);
4317 declaration = statement->scope.declarations;
4318 for( ; declaration != NULL; declaration = declaration->next) {
4319 initialize_local_declaration(declaration);
4322 if (get_cur_block() != NULL) {
4323 if (statement->initialisation != NULL) {
4324 expression_to_firm(statement->initialisation);
4331 /* create the step block */
4332 ir_node *const step_block = new_immBlock();
4333 if (statement->step != NULL) {
4334 expression_to_firm(statement->step);
4336 ir_node *const step_jmp = new_Jmp();
4338 /* create the header block */
4339 ir_node *const header_block = new_immBlock();
4341 add_immBlock_pred(header_block, jmp);
4343 add_immBlock_pred(header_block, step_jmp);
4345 /* the false block */
4346 ir_node *const false_block = new_immBlock();
4349 ir_node * body_block;
4350 if (statement->body != NULL) {
4351 ir_node *const old_continue_label = continue_label;
4352 ir_node *const old_break_label = break_label;
4353 continue_label = step_block;
4354 break_label = false_block;
4356 body_block = new_immBlock();
4357 statement_to_firm(statement->body);
4359 assert(continue_label == step_block);
4360 assert(break_label == false_block);
4361 continue_label = old_continue_label;
4362 break_label = old_break_label;
4364 if (get_cur_block() != NULL) {
4366 add_immBlock_pred(step_block, jmp);
4369 body_block = step_block;
4372 /* create the condition */
4373 set_cur_block(header_block);
4374 if (statement->condition != NULL) {
4375 create_condition_evaluation(statement->condition, body_block,
4378 keep_alive(header_block);
4379 keep_alive(get_store());
4381 add_immBlock_pred(body_block, jmp);
4384 mature_immBlock(body_block);
4385 mature_immBlock(false_block);
4386 mature_immBlock(step_block);
4387 mature_immBlock(header_block);
4388 mature_immBlock(false_block);
4390 set_cur_block(false_block);
4393 static void create_jump_statement(const statement_t *statement,
4394 ir_node *target_block)
4396 if (get_cur_block() == NULL)
4399 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4400 ir_node *jump = new_d_Jmp(dbgi);
4401 add_immBlock_pred(target_block, jump);
4403 set_cur_block(NULL);
4406 static ir_node *get_break_label(void)
4408 if (break_label == NULL) {
4409 ir_node *cur_block = get_cur_block();
4410 break_label = new_immBlock();
4411 set_cur_block(cur_block);
4416 static void switch_statement_to_firm(switch_statement_t *statement)
4418 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4420 ir_node *expression = expression_to_firm(statement->expression);
4421 ir_node *cond = new_d_Cond(dbgi, expression);
4423 set_cur_block(NULL);
4425 ir_node *const old_switch_cond = current_switch_cond;
4426 ir_node *const old_break_label = break_label;
4427 const bool old_saw_default_label = saw_default_label;
4428 saw_default_label = false;
4429 current_switch_cond = cond;
4431 switch_statement_t *const old_switch = current_switch;
4432 current_switch = statement;
4434 /* determine a free number for the default label */
4435 unsigned long num_cases = 0;
4437 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4438 if (l->expression == NULL) {
4442 if (l->last_case >= l->first_case)
4443 num_cases += l->last_case - l->first_case;
4444 if (l->last_case > def_nr)
4445 def_nr = l->last_case;
4448 if (def_nr + 1 < 0) {
4449 /* Bad: an overflow occurred, we cannot be sure that the
4450 * maximum + 1 is a free number. Scan the values a second
4451 * time to find a free number.
4453 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4456 memset(bits, 0, (num_cases + 7) >> 3);
4457 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4458 if (l->expression == NULL) {
4462 for (long cns = l->first_case; cns <= l->last_case; ++cns) {
4463 if (cns >= 0 && (unsigned long)cns < num_cases)
4464 bits[cns >> 3] |= (1 << (cns & 7));
4467 /* We look at the first num_cases constants:
4468 * Either they are densed, so we took the last (num_cases)
4469 * one, or they are non densed, so we will find one free
4472 for (i = 0; i < num_cases; ++i)
4473 if ((bits[i >> 3] & (i & 7)) == 0)
4481 statement->default_proj_nr = def_nr;
4483 if (statement->body != NULL) {
4484 statement_to_firm(statement->body);
4487 if (get_cur_block() != NULL) {
4488 ir_node *jmp = new_Jmp();
4489 add_immBlock_pred(get_break_label(), jmp);
4492 if (!saw_default_label) {
4493 set_cur_block(get_nodes_block(cond));
4494 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4495 statement->default_proj_nr);
4496 add_immBlock_pred(get_break_label(), proj);
4499 if (break_label != NULL) {
4500 mature_immBlock(break_label);
4502 set_cur_block(break_label);
4504 assert(current_switch_cond == cond);
4505 current_switch = old_switch;
4506 current_switch_cond = old_switch_cond;
4507 break_label = old_break_label;
4508 saw_default_label = old_saw_default_label;
4511 static void case_label_to_firm(const case_label_statement_t *statement)
4513 if (statement->is_empty)
4516 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4518 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4521 ir_node *old_block = get_nodes_block(current_switch_cond);
4522 ir_node *block = new_immBlock();
4524 set_cur_block(old_block);
4525 if (statement->expression != NULL) {
4526 long pn = statement->first_case;
4527 long end_pn = statement->last_case;
4528 assert(pn <= end_pn);
4529 /* create jumps for all cases in the given range */
4531 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4532 add_immBlock_pred(block, proj);
4533 } while(pn++ < end_pn);
4535 saw_default_label = true;
4536 proj = new_d_defaultProj(dbgi, current_switch_cond,
4537 current_switch->default_proj_nr);
4539 add_immBlock_pred(block, proj);
4542 if (fallthrough != NULL) {
4543 add_immBlock_pred(block, fallthrough);
4545 mature_immBlock(block);
4546 set_cur_block(block);
4548 if (statement->statement != NULL) {
4549 statement_to_firm(statement->statement);
4553 static ir_node *get_label_block(declaration_t *label)
4555 assert(label->namespc == NAMESPACE_LABEL);
4557 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4558 return label->v.block;
4560 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4562 ir_node *old_cur_block = get_cur_block();
4563 ir_node *block = new_immBlock();
4564 set_cur_block(old_cur_block);
4566 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4567 label->v.block = block;
4569 ARR_APP1(ir_node *, immature_blocks, block);
4574 static void label_to_firm(const label_statement_t *statement)
4576 ir_node *block = get_label_block(statement->label);
4578 if (get_cur_block() != NULL) {
4579 ir_node *jmp = new_Jmp();
4580 add_immBlock_pred(block, jmp);
4583 set_cur_block(block);
4584 keep_alive(get_store());
4587 if (statement->statement != NULL) {
4588 statement_to_firm(statement->statement);
4592 static void goto_to_firm(const goto_statement_t *statement)
4594 if (get_cur_block() == NULL)
4597 ir_node *block = get_label_block(statement->label);
4598 ir_node *jmp = new_Jmp();
4599 add_immBlock_pred(block, jmp);
4601 set_cur_block(NULL);
4604 static void asm_statement_to_firm(const asm_statement_t *statement)
4606 bool needs_memory = false;
4608 if (statement->is_volatile) {
4609 needs_memory = true;
4612 size_t n_clobbers = 0;
4613 asm_clobber_t *clobber = statement->clobbers;
4614 for( ; clobber != NULL; clobber = clobber->next) {
4615 const char *clobber_str = clobber->clobber.begin;
4617 if (!be_is_valid_clobber(clobber_str)) {
4618 errorf(&statement->base.source_position,
4619 "invalid clobber '%s' specified", clobber->clobber);
4623 if (strcmp(clobber_str, "memory") == 0) {
4624 needs_memory = true;
4628 ident *id = new_id_from_str(clobber_str);
4629 obstack_ptr_grow(&asm_obst, id);
4632 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4633 ident **clobbers = NULL;
4634 if (n_clobbers > 0) {
4635 clobbers = obstack_finish(&asm_obst);
4638 size_t n_inputs = 0;
4639 asm_argument_t *argument = statement->inputs;
4640 for ( ; argument != NULL; argument = argument->next)
4642 size_t n_outputs = 0;
4643 argument = statement->outputs;
4644 for ( ; argument != NULL; argument = argument->next)
4647 unsigned next_pos = 0;
4649 ir_node *ins[n_inputs + n_outputs + 1];
4652 ir_asm_constraint tmp_in_constraints[n_outputs];
4654 const expression_t *out_exprs[n_outputs];
4655 ir_node *out_addrs[n_outputs];
4656 size_t out_size = 0;
4658 argument = statement->outputs;
4659 for ( ; argument != NULL; argument = argument->next) {
4660 const char *constraints = argument->constraints.begin;
4661 asm_constraint_flags_t asm_flags
4662 = be_parse_asm_constraints(constraints);
4664 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4665 errorf(&statement->base.source_position,
4666 "some constraints in '%s' are not supported", constraints);
4669 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4670 errorf(&statement->base.source_position,
4671 "some constraints in '%s' are invalid", constraints);
4674 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4675 errorf(&statement->base.source_position,
4676 "no write flag specified for output constraints '%s'",
4681 unsigned pos = next_pos++;
4682 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4683 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4684 expression_t *expr = argument->expression;
4685 ir_node *addr = expression_to_addr(expr);
4686 /* in+output, construct an artifical same_as constraint on the
4688 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4690 ir_node *value = get_value_from_lvalue(expr, addr);
4692 snprintf(buf, sizeof(buf), "%d", pos);
4694 ir_asm_constraint constraint;
4695 constraint.pos = pos;
4696 constraint.constraint = new_id_from_str(buf);
4697 constraint.mode = get_ir_mode(expr->base.type);
4698 tmp_in_constraints[in_size] = constraint;
4699 ins[in_size] = value;
4704 out_exprs[out_size] = expr;
4705 out_addrs[out_size] = addr;
4707 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4708 /* pure memory ops need no input (but we have to make sure we
4709 * attach to the memory) */
4710 assert(! (asm_flags &
4711 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4712 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4713 needs_memory = true;
4715 /* we need to attach the address to the inputs */
4716 expression_t *expr = argument->expression;
4718 ir_asm_constraint constraint;
4719 constraint.pos = pos;
4720 constraint.constraint = new_id_from_str(constraints);
4721 constraint.mode = NULL;
4722 tmp_in_constraints[in_size] = constraint;
4724 ins[in_size] = expression_to_addr(expr);
4728 errorf(&statement->base.source_position,
4729 "only modifiers but no place set in constraints '%s'",
4734 ir_asm_constraint constraint;
4735 constraint.pos = pos;
4736 constraint.constraint = new_id_from_str(constraints);
4737 constraint.mode = get_ir_mode(argument->expression->base.type);
4739 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4741 assert(obstack_object_size(&asm_obst)
4742 == out_size * sizeof(ir_asm_constraint));
4743 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4746 obstack_grow(&asm_obst, tmp_in_constraints,
4747 in_size * sizeof(tmp_in_constraints[0]));
4748 /* find and count input and output arguments */
4749 argument = statement->inputs;
4750 for( ; argument != NULL; argument = argument->next) {
4751 const char *constraints = argument->constraints.begin;
4752 asm_constraint_flags_t asm_flags
4753 = be_parse_asm_constraints(constraints);
4755 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4756 errorf(&statement->base.source_position,
4757 "some constraints in '%s' are not supported", constraints);
4760 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4761 errorf(&statement->base.source_position,
4762 "some constraints in '%s' are invalid", constraints);
4765 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4766 errorf(&statement->base.source_position,
4767 "write flag specified for input constraints '%s'",
4773 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4774 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4775 /* we can treat this as "normal" input */
4776 input = expression_to_firm(argument->expression);
4777 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4778 /* pure memory ops need no input (but we have to make sure we
4779 * attach to the memory) */
4780 assert(! (asm_flags &
4781 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4782 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4783 needs_memory = true;
4784 input = expression_to_addr(argument->expression);
4786 errorf(&statement->base.source_position,
4787 "only modifiers but no place set in constraints '%s'",
4792 ir_asm_constraint constraint;
4793 constraint.pos = next_pos++;
4794 constraint.constraint = new_id_from_str(constraints);
4795 constraint.mode = get_irn_mode(input);
4797 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4798 ins[in_size++] = input;
4802 ir_asm_constraint constraint;
4803 constraint.pos = next_pos++;
4804 constraint.constraint = new_id_from_str("");
4805 constraint.mode = mode_M;
4807 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4808 ins[in_size++] = get_store();
4811 assert(obstack_object_size(&asm_obst)
4812 == in_size * sizeof(ir_asm_constraint));
4813 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4815 /* create asm node */
4816 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4818 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4820 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4821 out_size, output_constraints,
4822 n_clobbers, clobbers, asm_text);
4824 if (statement->is_volatile) {
4825 set_irn_pinned(node, op_pin_state_pinned);
4827 set_irn_pinned(node, op_pin_state_floats);
4830 /* create output projs & connect them */
4832 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4837 for (i = 0; i < out_size; ++i) {
4838 const expression_t *out_expr = out_exprs[i];
4840 ir_mode *mode = get_ir_mode(out_expr->base.type);
4841 ir_node *proj = new_Proj(node, mode, pn);
4842 ir_node *addr = out_addrs[i];
4844 set_value_for_expression_addr(out_expr, proj, addr);
4848 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4849 statement_to_firm(statement->try_statement);
4850 warningf(&statement->base.source_position, "structured exception handling ignored");
4853 static void leave_statement_to_firm(leave_statement_t *statement) {
4854 errorf(&statement->base.source_position, "__leave not supported yet");
4858 * Transform a statement.
4860 static void statement_to_firm(statement_t *statement)
4863 assert(!statement->base.transformed);
4864 statement->base.transformed = true;
4867 switch(statement->kind) {
4868 case STATEMENT_INVALID:
4869 panic("invalid statement found");
4871 case STATEMENT_EMPTY:
4874 case STATEMENT_COMPOUND:
4875 compound_statement_to_firm(&statement->compound);
4877 case STATEMENT_RETURN:
4878 return_statement_to_firm(&statement->returns);
4880 case STATEMENT_EXPRESSION:
4881 expression_statement_to_firm(&statement->expression);
4884 if_statement_to_firm(&statement->ifs);
4886 case STATEMENT_WHILE:
4887 while_statement_to_firm(&statement->whiles);
4889 case STATEMENT_DO_WHILE:
4890 do_while_statement_to_firm(&statement->do_while);
4892 case STATEMENT_DECLARATION:
4893 declaration_statement_to_firm(&statement->declaration);
4895 case STATEMENT_BREAK:
4896 create_jump_statement(statement, get_break_label());
4898 case STATEMENT_CONTINUE:
4899 create_jump_statement(statement, continue_label);
4901 case STATEMENT_SWITCH:
4902 switch_statement_to_firm(&statement->switchs);
4904 case STATEMENT_CASE_LABEL:
4905 case_label_to_firm(&statement->case_label);
4908 for_statement_to_firm(&statement->fors);
4910 case STATEMENT_LABEL:
4911 label_to_firm(&statement->label);
4913 case STATEMENT_GOTO:
4914 goto_to_firm(&statement->gotos);
4917 asm_statement_to_firm(&statement->asms);
4919 case STATEMENT_MS_TRY:
4920 ms_try_statement_to_firm(&statement->ms_try);
4922 case STATEMENT_LEAVE:
4923 leave_statement_to_firm(&statement->leave);
4926 panic("Statement not implemented\n");
4929 static int count_decls_in_expression(const expression_t *expression);
4931 static int count_local_declarations(const declaration_t * decl,
4932 const declaration_t *const end)
4935 for (; decl != end; decl = decl->next) {
4936 if (decl->namespc != NAMESPACE_NORMAL)
4938 type_t *type = skip_typeref(decl->type);
4940 if (!decl->address_taken && is_type_scalar(type))
4942 const initializer_t *initializer = decl->init.initializer;
4943 /* FIXME: should walk initializer hierarchies... */
4944 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4945 count += count_decls_in_expression(initializer->value.value);
4951 static int count_decls_in_expression(const expression_t *expression) {
4954 if (expression == NULL)
4957 switch((expression_kind_t) expression->base.kind) {
4958 case EXPR_STATEMENT:
4959 return count_decls_in_stmts(expression->statement.statement);
4961 int count_left = count_decls_in_expression(expression->binary.left);
4962 int count_right = count_decls_in_expression(expression->binary.right);
4963 return count_left + count_right;
4966 return count_decls_in_expression(expression->unary.value);
4968 call_argument_t *argument = expression->call.arguments;
4969 for( ; argument != NULL; argument = argument->next) {
4970 count += count_decls_in_expression(argument->expression);
4977 panic("unexpected expression kind");
4979 case EXPR_COMPOUND_LITERAL:
4983 case EXPR_CONDITIONAL:
4984 count += count_decls_in_expression(expression->conditional.condition);
4985 count += count_decls_in_expression(expression->conditional.true_expression);
4986 count += count_decls_in_expression(expression->conditional.false_expression);
4989 case EXPR_BUILTIN_PREFETCH:
4990 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4991 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4992 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4995 case EXPR_BUILTIN_CONSTANT_P:
4996 count += count_decls_in_expression(expression->builtin_constant.value);
5000 count += count_decls_in_expression(expression->select.compound);
5003 case EXPR_ARRAY_ACCESS:
5004 count += count_decls_in_expression(expression->array_access.array_ref);
5005 count += count_decls_in_expression(expression->array_access.index);
5008 case EXPR_CLASSIFY_TYPE:
5009 count += count_decls_in_expression(expression->classify_type.type_expression);
5013 case EXPR_ALIGNOF: {
5014 expression_t *tp_expression = expression->typeprop.tp_expression;
5015 if (tp_expression != NULL) {
5016 count += count_decls_in_expression(tp_expression);
5022 case EXPR_REFERENCE:
5024 case EXPR_CHARACTER_CONSTANT:
5025 case EXPR_WIDE_CHARACTER_CONSTANT:
5026 case EXPR_STRING_LITERAL:
5027 case EXPR_WIDE_STRING_LITERAL:
5029 case EXPR_BUILTIN_SYMBOL:
5035 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
5036 * (or implement all the missing expressions here/implement a walker)
5042 static int count_decls_in_stmts(const statement_t *stmt)
5045 for (; stmt != NULL; stmt = stmt->base.next) {
5046 switch (stmt->kind) {
5047 case STATEMENT_EMPTY:
5050 case STATEMENT_DECLARATION: {
5051 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5052 count += count_local_declarations(decl_stmt->declarations_begin,
5053 decl_stmt->declarations_end->next);
5057 case STATEMENT_COMPOUND: {
5058 const compound_statement_t *const comp =
5060 count += count_decls_in_stmts(comp->statements);
5064 case STATEMENT_IF: {
5065 const if_statement_t *const if_stmt = &stmt->ifs;
5066 count += count_decls_in_expression(if_stmt->condition);
5067 count += count_decls_in_stmts(if_stmt->true_statement);
5068 count += count_decls_in_stmts(if_stmt->false_statement);
5072 case STATEMENT_SWITCH: {
5073 const switch_statement_t *const switch_stmt = &stmt->switchs;
5074 count += count_decls_in_expression(switch_stmt->expression);
5075 count += count_decls_in_stmts(switch_stmt->body);
5079 case STATEMENT_LABEL: {
5080 const label_statement_t *const label_stmt = &stmt->label;
5081 if (label_stmt->statement != NULL) {
5082 count += count_decls_in_stmts(label_stmt->statement);
5087 case STATEMENT_WHILE: {
5088 const while_statement_t *const while_stmt = &stmt->whiles;
5089 count += count_decls_in_expression(while_stmt->condition);
5090 count += count_decls_in_stmts(while_stmt->body);
5094 case STATEMENT_DO_WHILE: {
5095 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
5096 count += count_decls_in_expression(do_while_stmt->condition);
5097 count += count_decls_in_stmts(do_while_stmt->body);
5101 case STATEMENT_FOR: {
5102 const for_statement_t *const for_stmt = &stmt->fors;
5103 count += count_local_declarations(for_stmt->scope.declarations, NULL);
5104 count += count_decls_in_expression(for_stmt->initialisation);
5105 count += count_decls_in_expression(for_stmt->condition);
5106 count += count_decls_in_expression(for_stmt->step);
5107 count += count_decls_in_stmts(for_stmt->body);
5111 case STATEMENT_CASE_LABEL: {
5112 const case_label_statement_t *label = &stmt->case_label;
5113 count += count_decls_in_expression(label->expression);
5114 if (label->statement != NULL) {
5115 count += count_decls_in_stmts(label->statement);
5121 case STATEMENT_BREAK:
5122 case STATEMENT_CONTINUE:
5125 case STATEMENT_EXPRESSION: {
5126 const expression_statement_t *expr_stmt = &stmt->expression;
5127 count += count_decls_in_expression(expr_stmt->expression);
5131 case STATEMENT_GOTO:
5132 case STATEMENT_LEAVE:
5133 case STATEMENT_INVALID:
5136 case STATEMENT_RETURN: {
5137 const return_statement_t *ret_stmt = &stmt->returns;
5138 count += count_decls_in_expression(ret_stmt->value);
5142 case STATEMENT_MS_TRY: {
5143 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5144 count += count_decls_in_stmts(try_stmt->try_statement);
5145 if (try_stmt->except_expression != NULL)
5146 count += count_decls_in_expression(try_stmt->except_expression);
5147 count += count_decls_in_stmts(try_stmt->final_statement);
5155 static int get_function_n_local_vars(declaration_t *declaration)
5159 /* count parameters */
5160 count += count_local_declarations(declaration->scope.declarations, NULL);
5162 /* count local variables declared in body */
5163 count += count_decls_in_stmts(declaration->init.statement);
5168 static void initialize_function_parameters(declaration_t *declaration)
5170 ir_graph *irg = current_ir_graph;
5171 ir_node *args = get_irg_args(irg);
5172 ir_node *start_block = get_irg_start_block(irg);
5173 ir_type *function_irtype = get_ir_type(declaration->type);
5176 declaration_t *parameter = declaration->scope.declarations;
5177 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5178 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5179 type_t *type = skip_typeref(parameter->type);
5181 bool needs_entity = parameter->address_taken;
5182 assert(!is_type_array(type));
5183 if (is_type_compound(type)) {
5184 needs_entity = true;
5188 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5189 ident *id = new_id_from_str(parameter->symbol->string);
5190 set_entity_ident(entity, id);
5192 parameter->declaration_kind
5193 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5194 parameter->v.entity = entity;
5198 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5199 ir_mode *param_mode = get_type_mode(param_irtype);
5202 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5204 ir_mode *mode = get_ir_mode(type);
5205 value = create_conv(NULL, value, mode);
5206 value = do_strict_conv(NULL, value);
5208 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5209 parameter->v.value_number = next_value_number_function;
5210 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5211 ++next_value_number_function;
5213 set_value(parameter->v.value_number, value);
5218 * Handle additional decl modifiers for IR-graphs
5220 * @param irg the IR-graph
5221 * @param dec_modifiers additional modifiers
5223 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5225 if (decl_modifiers & DM_NORETURN) {
5226 /* TRUE if the declaration includes the Microsoft
5227 __declspec(noreturn) specifier. */
5228 set_irg_additional_property(irg, mtp_property_noreturn);
5230 if (decl_modifiers & DM_NOTHROW) {
5231 /* TRUE if the declaration includes the Microsoft
5232 __declspec(nothrow) specifier. */
5233 set_irg_additional_property(irg, mtp_property_nothrow);
5235 if (decl_modifiers & DM_NAKED) {
5236 /* TRUE if the declaration includes the Microsoft
5237 __declspec(naked) specifier. */
5238 set_irg_additional_property(irg, mtp_property_naked);
5240 if (decl_modifiers & DM_FORCEINLINE) {
5241 /* TRUE if the declaration includes the
5242 Microsoft __forceinline specifier. */
5243 set_irg_inline_property(irg, irg_inline_forced);
5245 if (decl_modifiers & DM_NOINLINE) {
5246 /* TRUE if the declaration includes the Microsoft
5247 __declspec(noinline) specifier. */
5248 set_irg_inline_property(irg, irg_inline_forbidden);
5252 static void add_function_pointer(ir_type *segment, ir_entity *method,
5253 const char *unique_template)
5255 ir_type *method_type = get_entity_type(method);
5256 ident *id = id_unique(unique_template);
5257 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5259 ident *ide = id_unique(unique_template);
5260 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5261 ir_graph *irg = get_const_code_irg();
5262 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5265 set_entity_compiler_generated(ptr, 1);
5266 set_entity_variability(ptr, variability_constant);
5267 set_atomic_ent_value(ptr, val);
5271 * Create code for a function.
5273 static void create_function(declaration_t *declaration)
5275 ir_entity *function_entity = get_function_entity(declaration);
5277 if (declaration->init.statement == NULL)
5280 if (declaration->modifiers & DM_CONSTRUCTOR) {
5281 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5282 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5284 if (declaration->modifiers & DM_DESTRUCTOR) {
5285 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5286 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5289 current_function_decl = declaration;
5290 current_function_name = NULL;
5291 current_funcsig = NULL;
5293 assert(immature_blocks == NULL);
5294 immature_blocks = NEW_ARR_F(ir_node*, 0);
5296 int n_local_vars = get_function_n_local_vars(declaration);
5297 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5299 set_irg_fp_model(irg, firm_opt.fp_model);
5300 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5301 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5303 ir_node *first_block = get_cur_block();
5305 /* set inline flags */
5306 if (declaration->is_inline)
5307 set_irg_inline_property(irg, irg_inline_recomended);
5308 handle_decl_modifier_irg(irg, declaration->modifiers);
5310 next_value_number_function = 0;
5311 initialize_function_parameters(declaration);
5313 statement_to_firm(declaration->init.statement);
5315 ir_node *end_block = get_irg_end_block(irg);
5317 /* do we have a return statement yet? */
5318 if (get_cur_block() != NULL) {
5319 type_t *type = skip_typeref(declaration->type);
5320 assert(is_type_function(type));
5321 const function_type_t *func_type = &type->function;
5322 const type_t *return_type
5323 = skip_typeref(func_type->return_type);
5326 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5327 ret = new_Return(get_store(), 0, NULL);
5330 if (is_type_scalar(return_type)) {
5331 mode = get_ir_mode(func_type->return_type);
5337 /* ยง5.1.2.2.3 main implicitly returns 0 */
5338 if (strcmp(declaration->symbol->string, "main") == 0) {
5339 in[0] = new_Const(mode, get_mode_null(mode));
5341 in[0] = new_Unknown(mode);
5343 ret = new_Return(get_store(), 1, in);
5345 add_immBlock_pred(end_block, ret);
5348 for(int i = 0; i < ARR_LEN(immature_blocks); ++i) {
5349 mature_immBlock(immature_blocks[i]);
5351 DEL_ARR_F(immature_blocks);
5352 immature_blocks = NULL;
5354 mature_immBlock(first_block);
5355 mature_immBlock(end_block);
5357 irg_finalize_cons(irg);
5359 /* finalize the frame type */
5360 ir_type *frame_type = get_irg_frame_type(irg);
5361 int n = get_compound_n_members(frame_type);
5364 for(int i = 0; i < n; ++i) {
5365 ir_entity *entity = get_compound_member(frame_type, i);
5366 ir_type *entity_type = get_entity_type(entity);
5368 int align = get_type_alignment_bytes(entity_type);
5369 if (align > align_all)
5373 misalign = offset % align;
5375 offset += align - misalign;
5379 set_entity_offset(entity, offset);
5380 offset += get_type_size_bytes(entity_type);
5382 set_type_size_bytes(frame_type, offset);
5383 set_type_alignment_bytes(frame_type, align_all);
5388 static void scope_to_firm(scope_t *scope)
5390 /* first pass: create declarations */
5391 declaration_t *declaration = scope->declarations;
5392 for( ; declaration != NULL; declaration = declaration->next) {
5393 if (declaration->namespc != NAMESPACE_NORMAL)
5395 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5396 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5398 if (declaration->symbol == NULL)
5401 type_t *type = skip_typeref(declaration->type);
5402 if (is_type_function(type)) {
5403 get_function_entity(declaration);
5405 create_global_variable(declaration);
5409 /* second pass: create code/initializers */
5410 declaration = scope->declarations;
5411 for( ; declaration != NULL; declaration = declaration->next) {
5412 if (declaration->namespc != NAMESPACE_NORMAL)
5414 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5415 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5417 if (declaration->symbol == NULL)
5420 type_t *type = declaration->type;
5421 if (type->kind == TYPE_FUNCTION) {
5422 create_function(declaration);
5424 assert(declaration->declaration_kind
5425 == DECLARATION_KIND_GLOBAL_VARIABLE);
5426 current_ir_graph = get_const_code_irg();
5427 create_declaration_initializer(declaration);
5432 static void set_be_option(const char *option)
5434 int res = firm_be_option(option);
5438 void init_ast2firm(void)
5440 obstack_init(&asm_obst);
5441 init_atomic_modes();
5443 id_underscore = new_id_from_chars("_", 1);
5444 id_imp = new_id_from_chars("__imp_", 6);
5446 /* OS option must be set to the backend */
5447 switch (firm_opt.os_support) {
5448 case OS_SUPPORT_MINGW:
5449 create_ld_ident = create_ld_ident_win32;
5450 set_be_option("ia32-gasmode=mingw");
5452 case OS_SUPPORT_LINUX:
5453 create_ld_ident = create_ld_ident_linux_elf;
5454 set_be_option("ia32-gasmode=elf");
5456 case OS_SUPPORT_MACHO:
5457 create_ld_ident = create_ld_ident_macho;
5458 set_be_option("ia32-gasmode=macho");
5459 set_be_option("ia32-stackalign=4");
5460 set_be_option("pic");
5464 /* create idents for all known runtime functions */
5465 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5466 rts_idents[i] = new_id_from_str(rts_data[i].name);
5469 entitymap_init(&entitymap);
5472 static void init_ir_types(void)
5474 static int ir_types_initialized = 0;
5475 if (ir_types_initialized)
5477 ir_types_initialized = 1;
5479 ir_type_int = get_ir_type(type_int);
5480 ir_type_const_char = get_ir_type(type_const_char);
5481 ir_type_wchar_t = get_ir_type(type_wchar_t);
5482 ir_type_void = get_ir_type(type_void);
5485 void exit_ast2firm(void)
5487 entitymap_destroy(&entitymap);
5488 obstack_free(&asm_obst, NULL);
5491 static void global_asm_to_firm(statement_t *s)
5493 for (; s != NULL; s = s->base.next) {
5494 assert(s->kind == STATEMENT_ASM);
5496 char const *const text = s->asms.asm_text.begin;
5497 size_t size = s->asms.asm_text.size;
5499 /* skip the last \0 */
5500 if (text[size - 1] == '\0')
5503 ident *const id = new_id_from_chars(text, size);
5508 void translation_unit_to_firm(translation_unit_t *unit)
5510 /* just to be sure */
5511 continue_label = NULL;
5513 current_switch_cond = NULL;
5517 scope_to_firm(&unit->scope);
5518 global_asm_to_firm(unit->global_asm);
5520 current_ir_graph = NULL;