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
27 #include <libfirm/firm.h>
28 #include <libfirm/adt/obst.h>
29 #include <libfirm/be.h>
33 #include "adt/error.h"
34 #include "adt/array.h"
41 #include "diagnostic.h"
42 #include "lang_features.h"
44 #include "type_hash.h"
46 #include "walk_statements.h"
48 #include "entitymap_t.h"
49 #include "driver/firm_opt.h"
50 #include "driver/firm_cmdline.h"
52 static ir_type *ir_type_const_char;
53 static ir_type *ir_type_wchar_t;
54 static ir_type *ir_type_void;
55 static ir_type *ir_type_int;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static label_t **all_labels;
63 static entity_t **inner_functions;
64 static ir_node *ijmp_list;
65 static bool constant_folding;
66 static symbol_t *sym_C;
68 extern bool have_const_functions;
70 static const entity_t *current_function_entity;
71 static ir_node *current_function_name;
72 static ir_node *current_funcsig;
73 static switch_statement_t *current_switch;
74 static ir_graph *current_function;
75 static translation_unit_t *current_translation_unit;
77 static entitymap_t entitymap;
79 static struct obstack asm_obst;
81 typedef enum declaration_kind_t {
82 DECLARATION_KIND_UNKNOWN,
83 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
84 DECLARATION_KIND_GLOBAL_VARIABLE,
85 DECLARATION_KIND_LOCAL_VARIABLE,
86 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
87 DECLARATION_KIND_FUNCTION,
88 DECLARATION_KIND_COMPOUND_MEMBER,
89 DECLARATION_KIND_INNER_FUNCTION
92 static ir_mode *get_ir_mode(type_t *type);
93 static ir_type *get_ir_type_incomplete(type_t *type);
95 static void enqueue_inner_function(entity_t *entity)
97 ARR_APP1(entity_t*, inner_functions, entity);
100 static entity_t *next_inner_function(void)
102 int len = ARR_LEN(inner_functions);
106 entity_t *entity = inner_functions[len-1];
107 ARR_SHRINKLEN(inner_functions, len-1);
112 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
114 const variable_t *variable = get_irg_loc_description(irg, pos);
116 if (variable != NULL) {
117 warningf(&variable->base.base.source_position,
118 "variable '%#T' might be used uninitialized",
119 variable->base.type, variable->base.base.symbol);
121 return new_r_Unknown(irg, mode);
124 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
126 const source_position_t *pos = (const source_position_t*) dbg;
129 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
133 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
135 const source_position_t *pos = (const source_position_t*) dbg;
140 return pos->input_name;
143 static dbg_info *get_dbg_info(const source_position_t *pos)
145 return (dbg_info*) pos;
148 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
150 static ir_mode *mode_int, *mode_uint;
152 static ir_node *_expression_to_firm(const expression_t *expression);
153 static ir_node *expression_to_firm(const expression_t *expression);
154 static void create_local_declaration(entity_t *entity);
156 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
158 unsigned flags = get_atomic_type_flags(kind);
159 unsigned size = get_atomic_type_size(kind);
160 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
161 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
164 unsigned bit_size = size * 8;
165 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
166 ir_mode_arithmetic arithmetic;
168 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
169 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
170 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
172 sort = irms_int_number;
173 arithmetic = irma_twos_complement;
175 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
176 snprintf(name, sizeof(name), "F%u", bit_size);
177 sort = irms_float_number;
178 arithmetic = irma_ieee754;
180 /* note: modulo_shift is 0, as in C it's undefined anyway to shift
181 * a too big amount */
182 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
190 * Initialises the atomic modes depending on the machine size.
192 static void init_atomic_modes(void)
194 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
195 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
197 mode_int = atomic_modes[ATOMIC_TYPE_INT];
198 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
200 /* there's no real void type in firm */
201 atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
203 /* initialize pointer modes */
205 ir_mode_sort sort = irms_reference;
206 unsigned bit_size = machine_size;
208 ir_mode_arithmetic arithmetic = irma_twos_complement;
209 unsigned modulo_shift
210 = bit_size < machine_size ? machine_size : bit_size;
212 snprintf(name, sizeof(name), "p%u", machine_size);
213 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
216 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
217 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
219 /* Hmm, pointers should be machine size */
220 set_modeP_data(ptr_mode);
221 set_modeP_code(ptr_mode);
224 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
226 assert(kind <= ATOMIC_TYPE_LAST);
227 return atomic_modes[kind];
230 static unsigned get_compound_type_size(compound_type_t *type)
232 ir_type *irtype = get_ir_type((type_t*) type);
233 return get_type_size_bytes(irtype);
236 static unsigned get_array_type_size(array_type_t *type)
238 assert(!type->is_vla);
239 ir_type *irtype = get_ir_type((type_t*) type);
240 return get_type_size_bytes(irtype);
243 static unsigned get_type_size_const(type_t *type)
247 panic("error type occurred");
249 return get_atomic_type_size(type->atomic.akind);
251 return 2 * get_atomic_type_size(type->complex.akind);
253 return get_atomic_type_size(type->imaginary.akind);
255 return get_mode_size_bytes(mode_int);
256 case TYPE_COMPOUND_UNION:
257 case TYPE_COMPOUND_STRUCT:
258 return get_compound_type_size(&type->compound);
260 /* just a pointer to the function */
261 return get_mode_size_bytes(mode_P_code);
263 return get_mode_size_bytes(mode_P_data);
265 return get_array_type_size(&type->array);
267 return get_type_size_const(type->builtin.real_type);
269 panic("type size of bitfield request");
275 panic("Trying to determine size of invalid type");
278 static ir_node *get_type_size(type_t *type)
280 type = skip_typeref(type);
282 if (is_type_array(type) && type->array.is_vla) {
283 ir_node *size_node = type->array.size_node;
284 if (size_node == NULL) {
285 size_node = expression_to_firm(type->array.size_expression);
286 assert(!is_Const(size_node));
287 type->array.size_node = size_node;
290 ir_node *elem_size = get_type_size(type->array.element_type);
291 ir_mode *mode = get_irn_mode(size_node);
292 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
296 ir_mode *mode = get_ir_mode(type_size_t);
298 sym.type_p = get_ir_type(type);
299 return new_SymConst(mode, sym, symconst_type_size);
302 static unsigned count_parameters(const function_type_t *function_type)
306 function_parameter_t *parameter = function_type->parameters;
307 for ( ; parameter != NULL; parameter = parameter->next) {
315 * Creates a Firm type for an atomic type
317 static ir_type *create_atomic_type(const atomic_type_t *type)
319 atomic_type_kind_t kind = type->akind;
320 ir_mode *mode = atomic_modes[kind];
321 ident *id = get_mode_ident(mode);
322 ir_type *irtype = new_type_primitive(id, mode);
324 set_type_alignment_bytes(irtype, type->base.alignment);
330 * Creates a Firm type for a complex type
332 static ir_type *create_complex_type(const complex_type_t *type)
334 atomic_type_kind_t kind = type->akind;
335 ir_mode *mode = atomic_modes[kind];
336 ident *id = get_mode_ident(mode);
340 /* FIXME: finish the array */
345 * Creates a Firm type for an imaginary type
347 static ir_type *create_imaginary_type(const imaginary_type_t *type)
349 atomic_type_kind_t kind = type->akind;
350 ir_mode *mode = atomic_modes[kind];
351 ident *id = get_mode_ident(mode);
352 ir_type *irtype = new_type_primitive(id, mode);
354 set_type_alignment_bytes(irtype, type->base.alignment);
360 * return type of a parameter (and take transparent union gnu extension into
363 static type_t *get_parameter_type(type_t *type)
365 type = skip_typeref(type);
366 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
367 compound_t *compound = type->compound.compound;
368 type = compound->members.entities->declaration.type;
374 static ir_type *create_method_type(const function_type_t *function_type)
376 type_t *return_type = skip_typeref(function_type->return_type);
378 ident *id = id_unique("functiontype.%u");
379 int n_parameters = count_parameters(function_type);
380 int n_results = return_type == type_void ? 0 : 1;
381 ir_type *irtype = new_type_method(id, n_parameters, n_results);
383 if (return_type != type_void) {
384 ir_type *restype = get_ir_type(return_type);
385 set_method_res_type(irtype, 0, restype);
388 function_parameter_t *parameter = function_type->parameters;
390 for ( ; parameter != NULL; parameter = parameter->next) {
391 type_t *type = get_parameter_type(parameter->type);
392 ir_type *p_irtype = get_ir_type(type);
393 set_method_param_type(irtype, n, p_irtype);
397 if (function_type->variadic || function_type->unspecified_parameters) {
398 set_method_variadicity(irtype, variadicity_variadic);
401 unsigned cc = get_method_calling_convention(irtype);
402 switch (function_type->calling_convention) {
403 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
406 set_method_calling_convention(irtype, SET_CDECL(cc));
410 if (function_type->variadic || function_type->unspecified_parameters)
413 /* only non-variadic function can use stdcall, else use cdecl */
414 set_method_calling_convention(irtype, SET_STDCALL(cc));
418 if (function_type->variadic || function_type->unspecified_parameters)
420 /* only non-variadic function can use fastcall, else use cdecl */
421 set_method_calling_convention(irtype, SET_FASTCALL(cc));
425 /* Hmm, leave default, not accepted by the parser yet. */
432 static ir_type *create_pointer_type(pointer_type_t *type)
434 type_t *points_to = type->points_to;
435 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
436 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
437 ir_points_to, mode_P_data);
442 static ir_type *create_array_type(array_type_t *type)
444 type_t *element_type = type->element_type;
445 ir_type *ir_element_type = get_ir_type(element_type);
447 ident *id = id_unique("array.%u");
448 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
450 const int align = get_type_alignment_bytes(ir_element_type);
451 set_type_alignment_bytes(ir_type, align);
453 if (type->size_constant) {
454 int n_elements = type->size;
456 set_array_bounds_int(ir_type, 0, 0, n_elements);
458 size_t elemsize = get_type_size_bytes(ir_element_type);
459 if (elemsize % align > 0) {
460 elemsize += align - (elemsize % align);
462 set_type_size_bytes(ir_type, n_elements * elemsize);
464 set_array_lower_bound_int(ir_type, 0, 0);
466 set_type_state(ir_type, layout_fixed);
472 * Return the signed integer type of size bits.
474 * @param size the size
476 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
479 static ir_mode *s_modes[64 + 1] = {NULL, };
483 if (size <= 0 || size > 64)
486 mode = s_modes[size];
490 snprintf(name, sizeof(name), "bf_I%u", size);
491 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
492 size <= 32 ? 32 : size );
493 s_modes[size] = mode;
497 snprintf(name, sizeof(name), "I%u", size);
498 ident *id = new_id_from_str(name);
499 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
500 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
501 set_primitive_base_type(res, base_tp);
507 * Return the unsigned integer type of size bits.
509 * @param size the size
511 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
514 static ir_mode *u_modes[64 + 1] = {NULL, };
518 if (size <= 0 || size > 64)
521 mode = u_modes[size];
525 snprintf(name, sizeof(name), "bf_U%u", size);
526 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
527 size <= 32 ? 32 : size );
528 u_modes[size] = mode;
533 snprintf(name, sizeof(name), "U%u", size);
534 ident *id = new_id_from_str(name);
535 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
536 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
537 set_primitive_base_type(res, base_tp);
542 static ir_type *create_bitfield_type(bitfield_type_t *const type)
544 type_t *base = skip_typeref(type->base_type);
545 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
546 ir_type *irbase = get_ir_type(base);
548 unsigned size = type->bit_size;
550 assert(!is_type_float(base));
551 if (is_type_signed(base)) {
552 return get_signed_int_type_for_bit_size(irbase, size);
554 return get_unsigned_int_type_for_bit_size(irbase, size);
558 #define INVALID_TYPE ((ir_type_ptr)-1)
561 COMPOUND_IS_STRUCT = false,
562 COMPOUND_IS_UNION = true
566 * Construct firm type from ast struct type.
568 * As anonymous inner structs get flattened to a single firm type, we might get
569 * irtype, outer_offset and out_align passed (they represent the position of
570 * the anonymous inner struct inside the resulting firm struct)
572 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
573 size_t *outer_offset, size_t *outer_align,
574 bool incomplete, bool is_union)
576 compound_t *compound = type->compound;
578 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
579 return compound->irtype;
582 size_t align_all = 1;
584 size_t bit_offset = 0;
587 if (irtype == NULL) {
588 symbol_t *symbol = compound->base.symbol;
590 if (symbol != NULL) {
591 id = new_id_from_str(symbol->string);
594 id = id_unique("__anonymous_union.%u");
596 id = id_unique("__anonymous_struct.%u");
599 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
602 irtype = new_d_type_union(id, dbgi);
604 irtype = new_d_type_struct(id, dbgi);
607 compound->irtype_complete = false;
608 compound->irtype = irtype;
610 offset = *outer_offset;
611 align_all = *outer_align;
617 compound->irtype_complete = true;
619 entity_t *entry = compound->members.entities;
620 for ( ; entry != NULL; entry = entry->base.next) {
621 if (entry->kind != ENTITY_COMPOUND_MEMBER)
624 size_t prev_offset = offset;
626 symbol_t *symbol = entry->base.symbol;
627 type_t *entry_type = skip_typeref(entry->declaration.type);
628 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
631 if (symbol != NULL) {
632 ident = new_id_from_str(symbol->string);
634 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
635 create_compound_type(&entry_type->compound, irtype, &offset,
636 &align_all, false, COMPOUND_IS_STRUCT);
637 goto finished_member;
638 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
639 create_compound_type(&entry_type->compound, irtype, &offset,
640 &align_all, false, COMPOUND_IS_UNION);
641 goto finished_member;
643 assert(entry_type->kind == TYPE_BITFIELD);
645 ident = id_unique("anon.%u");
648 ir_type *base_irtype;
649 if (entry_type->kind == TYPE_BITFIELD) {
650 base_irtype = get_ir_type(entry_type->bitfield.base_type);
652 base_irtype = get_ir_type(entry_type);
655 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
656 size_t misalign = offset % entry_alignment;
658 ir_type *entry_irtype = get_ir_type(entry_type);
659 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
662 size_t bits_remainder;
663 if (entry_type->kind == TYPE_BITFIELD) {
664 size_t size_bits = entry_type->bitfield.bit_size;
665 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
667 if (size_bits > rest_size_bits) {
668 /* start a new bucket */
669 offset += entry_alignment - misalign;
675 /* put into current bucket */
676 base = offset - misalign;
677 bits_remainder = misalign * 8 + bit_offset;
680 offset += size_bits / 8;
681 bit_offset = bit_offset + (size_bits % 8);
683 size_t entry_size = get_type_size_bytes(base_irtype);
684 if (misalign > 0 || bit_offset > 0)
685 offset += entry_alignment - misalign;
689 offset += entry_size;
693 if (entry_alignment > align_all) {
694 if (entry_alignment % align_all != 0) {
695 panic("uneven alignments not supported yet");
697 align_all = entry_alignment;
700 set_entity_offset(entity, base);
701 set_entity_offset_bits_remainder(entity,
702 (unsigned char) bits_remainder);
703 //add_struct_member(irtype, entity);
704 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
705 assert(entry->compound_member.entity == NULL);
706 entry->compound_member.entity = entity;
710 size_t entry_size = offset - prev_offset;
711 if (entry_size > size) {
723 size_t misalign = offset % align_all;
724 if (misalign > 0 || bit_offset > 0) {
725 size += align_all - misalign;
728 if (outer_offset != NULL) {
730 *outer_offset = offset;
732 *outer_offset += size;
735 if (align_all > *outer_align) {
736 if (align_all % *outer_align != 0) {
737 panic("uneven alignments not supported yet");
739 *outer_align = align_all;
742 set_type_alignment_bytes(irtype, align_all);
743 set_type_size_bytes(irtype, size);
744 set_type_state(irtype, layout_fixed);
750 static ir_type *create_enum_type(enum_type_t *const type)
752 type->base.firm_type = ir_type_int;
754 ir_mode *const mode = mode_int;
755 tarval *const one = get_mode_one(mode);
756 tarval * tv_next = get_tarval_null(mode);
758 bool constant_folding_old = constant_folding;
759 constant_folding = true;
761 enum_t *enume = type->enume;
762 entity_t *entry = enume->base.next;
763 for (; entry != NULL; entry = entry->base.next) {
764 if (entry->kind != ENTITY_ENUM_VALUE)
767 expression_t *const init = entry->enum_value.value;
769 ir_node *const cnst = expression_to_firm(init);
770 if (!is_Const(cnst)) {
771 panic("couldn't fold constant");
773 tv_next = get_Const_tarval(cnst);
775 entry->enum_value.tv = tv_next;
776 tv_next = tarval_add(tv_next, one);
779 constant_folding = constant_folding_old;
784 static ir_type *get_ir_type_incomplete(type_t *type)
786 assert(type != NULL);
787 type = skip_typeref(type);
789 if (type->base.firm_type != NULL) {
790 assert(type->base.firm_type != INVALID_TYPE);
791 return type->base.firm_type;
794 switch (type->kind) {
795 case TYPE_COMPOUND_STRUCT:
796 return create_compound_type(&type->compound, NULL, NULL, NULL,
797 true, COMPOUND_IS_STRUCT);
798 case TYPE_COMPOUND_UNION:
799 return create_compound_type(&type->compound, NULL, NULL, NULL,
800 true, COMPOUND_IS_UNION);
802 return get_ir_type(type);
806 ir_type *get_ir_type(type_t *type)
808 assert(type != NULL);
810 type = skip_typeref(type);
812 if (type->base.firm_type != NULL) {
813 assert(type->base.firm_type != INVALID_TYPE);
814 return type->base.firm_type;
817 ir_type *firm_type = NULL;
818 switch (type->kind) {
820 /* Happens while constant folding, when there was an error */
821 return create_atomic_type(&type_void->atomic);
824 firm_type = create_atomic_type(&type->atomic);
827 firm_type = create_complex_type(&type->complex);
830 firm_type = create_imaginary_type(&type->imaginary);
833 firm_type = create_method_type(&type->function);
836 firm_type = create_pointer_type(&type->pointer);
839 firm_type = create_array_type(&type->array);
841 case TYPE_COMPOUND_STRUCT:
842 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
843 false, COMPOUND_IS_STRUCT);
845 case TYPE_COMPOUND_UNION:
846 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
847 false, COMPOUND_IS_UNION);
850 firm_type = create_enum_type(&type->enumt);
853 firm_type = get_ir_type(type->builtin.real_type);
856 firm_type = create_bitfield_type(&type->bitfield);
864 if (firm_type == NULL)
865 panic("unknown type found");
867 type->base.firm_type = firm_type;
871 ir_mode *get_ir_mode(type_t *type)
873 ir_type *irtype = get_ir_type(type);
875 /* firm doesn't report a mode for arrays somehow... */
876 if (is_Array_type(irtype)) {
880 ir_mode *mode = get_type_mode(irtype);
881 assert(mode != NULL);
885 /** Names of the runtime functions. */
886 static const struct {
887 int id; /**< the rts id */
888 int n_res; /**< number of return values */
889 const char *name; /**< the name of the rts function */
890 int n_params; /**< number of parameters */
891 unsigned flags; /**< language flags */
893 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
894 { rts_abort, 0, "abort", 0, _C89 },
895 { rts_alloca, 1, "alloca", 1, _ALL },
896 { rts_abs, 1, "abs", 1, _C89 },
897 { rts_labs, 1, "labs", 1, _C89 },
898 { rts_llabs, 1, "llabs", 1, _C99 },
899 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
901 { rts_fabs, 1, "fabs", 1, _C89 },
902 { rts_sqrt, 1, "sqrt", 1, _C89 },
903 { rts_cbrt, 1, "cbrt", 1, _C99 },
904 { rts_exp, 1, "exp", 1, _C89 },
905 { rts_exp2, 1, "exp2", 1, _C89 },
906 { rts_exp10, 1, "exp10", 1, _GNUC },
907 { rts_log, 1, "log", 1, _C89 },
908 { rts_log2, 1, "log2", 1, _C89 },
909 { rts_log10, 1, "log10", 1, _C89 },
910 { rts_pow, 1, "pow", 2, _C89 },
911 { rts_sin, 1, "sin", 1, _C89 },
912 { rts_cos, 1, "cos", 1, _C89 },
913 { rts_tan, 1, "tan", 1, _C89 },
914 { rts_asin, 1, "asin", 1, _C89 },
915 { rts_acos, 1, "acos", 1, _C89 },
916 { rts_atan, 1, "atan", 1, _C89 },
917 { rts_sinh, 1, "sinh", 1, _C89 },
918 { rts_cosh, 1, "cosh", 1, _C89 },
919 { rts_tanh, 1, "tanh", 1, _C89 },
921 { rts_fabsf, 1, "fabsf", 1, _C99 },
922 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
923 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
924 { rts_expf, 1, "expf", 1, _C99 },
925 { rts_exp2f, 1, "exp2f", 1, _C99 },
926 { rts_exp10f, 1, "exp10f", 1, _GNUC },
927 { rts_logf, 1, "logf", 1, _C99 },
928 { rts_log2f, 1, "log2f", 1, _C99 },
929 { rts_log10f, 1, "log10f", 1, _C99 },
930 { rts_powf, 1, "powf", 2, _C99 },
931 { rts_sinf, 1, "sinf", 1, _C99 },
932 { rts_cosf, 1, "cosf", 1, _C99 },
933 { rts_tanf, 1, "tanf", 1, _C99 },
934 { rts_asinf, 1, "asinf", 1, _C99 },
935 { rts_acosf, 1, "acosf", 1, _C99 },
936 { rts_atanf, 1, "atanf", 1, _C99 },
937 { rts_sinhf, 1, "sinhf", 1, _C99 },
938 { rts_coshf, 1, "coshf", 1, _C99 },
939 { rts_tanhf, 1, "tanhf", 1, _C99 },
941 { rts_fabsl, 1, "fabsl", 1, _C99 },
942 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
943 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
944 { rts_expl, 1, "expl", 1, _C99 },
945 { rts_exp2l, 1, "exp2l", 1, _C99 },
946 { rts_exp10l, 1, "exp10l", 1, _GNUC },
947 { rts_logl, 1, "logl", 1, _C99 },
948 { rts_log2l, 1, "log2l", 1, _C99 },
949 { rts_log10l, 1, "log10l", 1, _C99 },
950 { rts_powl, 1, "powl", 2, _C99 },
951 { rts_sinl, 1, "sinl", 1, _C99 },
952 { rts_cosl, 1, "cosl", 1, _C99 },
953 { rts_tanl, 1, "tanl", 1, _C99 },
954 { rts_asinl, 1, "asinl", 1, _C99 },
955 { rts_acosl, 1, "acosl", 1, _C99 },
956 { rts_atanl, 1, "atanl", 1, _C99 },
957 { rts_sinhl, 1, "sinhl", 1, _C99 },
958 { rts_coshl, 1, "coshl", 1, _C99 },
959 { rts_tanhl, 1, "tanhl", 1, _C99 },
961 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
962 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
963 { rts_strcmp, 1, "strcmp", 2, _C89 },
964 { rts_strncmp, 1, "strncmp", 3, _C89 }
967 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
969 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
972 * Handle GNU attributes for entities
974 * @param ent the entity
975 * @param decl the routine declaration
977 static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
979 assert(is_declaration(entity));
980 decl_modifiers_t modifiers = entity->declaration.modifiers;
981 if (modifiers & DM_PURE) {
982 /* TRUE if the declaration includes the GNU
983 __attribute__((pure)) specifier. */
984 set_entity_additional_property(irentity, mtp_property_pure);
986 if (modifiers & DM_CONST) {
987 set_entity_additional_property(irentity, mtp_property_const);
988 have_const_functions = true;
990 if (modifiers & DM_USED) {
991 /* TRUE if the declaration includes the GNU
992 __attribute__((used)) specifier. */
993 set_entity_stickyness(irentity, stickyness_sticky);
997 static bool is_main(entity_t *entity)
999 static symbol_t *sym_main = NULL;
1000 if (sym_main == NULL) {
1001 sym_main = symbol_table_insert("main");
1004 if (entity->base.symbol != sym_main)
1006 /* must be in outermost scope */
1007 if (entity->base.parent_scope != ¤t_translation_unit->scope)
1014 * Creates an entity representing a function.
1016 * @param declaration the function declaration
1018 static ir_entity *get_function_entity(entity_t *entity)
1020 assert(entity->kind == ENTITY_FUNCTION);
1021 if (entity->function.entity != NULL) {
1022 return entity->function.entity;
1025 if (is_main(entity)) {
1026 /* force main to C linkage */
1027 type_t *type = entity->declaration.type;
1028 assert(is_type_function(type));
1029 if (type->function.linkage != NULL && type->function.linkage != sym_C) {
1030 errorf(&entity->base.source_position,
1031 "main must have \"C\" linkage");
1034 if (type->function.linkage == NULL || type->function.linkage != sym_C) {
1035 type_t *new_type = duplicate_type(type);
1036 new_type->function.linkage = sym_C;
1038 type = typehash_insert(new_type);
1039 if (type != new_type) {
1040 obstack_free(type_obst, new_type);
1042 entity->declaration.type = type;
1046 symbol_t *symbol = entity->base.symbol;
1047 ident *id = new_id_from_str(symbol->string);
1049 ir_type *global_type = get_glob_type();
1050 ir_type *ir_type_method = get_ir_type(entity->declaration.type);
1051 bool const has_body = entity->function.statement != NULL;
1053 /* already an entity defined? */
1054 ir_entity *irentity = entitymap_get(&entitymap, symbol);
1055 if (irentity != NULL) {
1056 if (get_entity_visibility(irentity) == visibility_external_allocated
1058 set_entity_visibility(irentity, visibility_external_visible);
1060 goto entity_created;
1063 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
1064 irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
1065 set_entity_ld_ident(irentity, create_ld_ident(entity));
1067 handle_gnu_attributes_ent(irentity, entity);
1069 /* static inline => local
1070 * extern inline => local
1071 * inline without definition => local
1072 * inline with definition => external_visible */
1073 storage_class_tag_t const storage_class
1074 = (storage_class_tag_t) entity->declaration.storage_class;
1075 bool const is_inline = entity->function.is_inline;
1076 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1077 set_entity_visibility(irentity, visibility_external_visible);
1078 } else if (storage_class == STORAGE_CLASS_STATIC ||
1079 (is_inline && has_body)) {
1081 /* this entity was declared, but is defined nowhere */
1082 set_entity_peculiarity(irentity, peculiarity_description);
1084 set_entity_visibility(irentity, visibility_local);
1085 } else if (has_body) {
1086 set_entity_visibility(irentity, visibility_external_visible);
1088 set_entity_visibility(irentity, visibility_external_allocated);
1090 set_entity_allocation(irentity, allocation_static);
1092 /* We should check for file scope here, but as long as we compile C only
1093 this is not needed. */
1094 if (! firm_opt.freestanding) {
1095 /* check for a known runtime function */
1096 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1097 if (id != rts_idents[i])
1100 /* ignore those rts functions not necessary needed for current mode */
1101 if ((c_mode & rts_data[i].flags) == 0)
1103 assert(rts_entities[rts_data[i].id] == NULL);
1104 rts_entities[rts_data[i].id] = irentity;
1108 entitymap_insert(&entitymap, symbol, irentity);
1111 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1112 entity->function.entity = irentity;
1118 * Creates a Const node representing a constant.
1120 static ir_node *const_to_firm(const const_expression_t *cnst)
1122 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1123 ir_mode *mode = get_ir_mode(cnst->base.type);
1128 if (mode_is_float(mode)) {
1129 tv = new_tarval_from_double(cnst->v.float_value, mode);
1131 if (mode_is_signed(mode)) {
1132 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1134 len = snprintf(buf, sizeof(buf), "%llu",
1135 (unsigned long long) cnst->v.int_value);
1137 tv = new_tarval_from_str(buf, len, mode);
1140 return new_d_Const(dbgi, mode, tv);
1144 * Creates a Const node representing a character constant.
1146 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1148 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1149 ir_mode *mode = get_ir_mode(cnst->base.type);
1151 long long int v = 0;
1152 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1153 if (char_is_signed) {
1154 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1156 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1160 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1161 tarval *tv = new_tarval_from_str(buf, len, mode);
1163 return new_d_Const(dbgi, mode, tv);
1167 * Creates a Const node representing a wide character constant.
1169 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1171 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1172 ir_mode *mode = get_ir_mode(cnst->base.type);
1174 long long int v = cnst->v.wide_character.begin[0];
1177 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1178 tarval *tv = new_tarval_from_str(buf, len, mode);
1180 return new_d_Const(dbgi, mode, tv);
1184 * Creates a SymConst for a given entity.
1186 * @param dbgi debug info
1187 * @param mode the (reference) mode for the SymConst
1188 * @param entity the entity
1190 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1193 assert(entity != NULL);
1194 union symconst_symbol sym;
1195 sym.entity_p = entity;
1196 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1200 * Creates a SymConst node representing a string constant.
1202 * @param src_pos the source position of the string constant
1203 * @param id_prefix a prefix for the name of the generated string constant
1204 * @param value the value of the string constant
1206 static ir_node *string_to_firm(const source_position_t *const src_pos,
1207 const char *const id_prefix,
1208 const string_t *const value)
1210 ir_type *const global_type = get_glob_type();
1211 dbg_info *const dbgi = get_dbg_info(src_pos);
1212 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1213 ir_type_const_char, dbgi);
1215 ident *const id = id_unique(id_prefix);
1216 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1217 set_entity_ld_ident(entity, id);
1218 set_entity_variability(entity, variability_constant);
1219 set_entity_allocation(entity, allocation_static);
1221 ir_type *const elem_type = ir_type_const_char;
1222 ir_mode *const mode = get_type_mode(elem_type);
1224 const char* const string = value->begin;
1225 const size_t slen = value->size;
1227 set_array_lower_bound_int(type, 0, 0);
1228 set_array_upper_bound_int(type, 0, slen);
1229 set_type_size_bytes(type, slen);
1230 set_type_state(type, layout_fixed);
1232 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1233 for (size_t i = 0; i < slen; ++i) {
1234 tvs[i] = new_tarval_from_long(string[i], mode);
1237 set_array_entity_values(entity, tvs, slen);
1240 return create_symconst(dbgi, mode_P_data, entity);
1244 * Creates a SymConst node representing a string literal.
1246 * @param literal the string literal
1248 static ir_node *string_literal_to_firm(
1249 const string_literal_expression_t* literal)
1251 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1256 * Creates a SymConst node representing a wide string literal.
1258 * @param literal the wide string literal
1260 static ir_node *wide_string_literal_to_firm(
1261 const wide_string_literal_expression_t* const literal)
1263 ir_type *const global_type = get_glob_type();
1264 ir_type *const elem_type = ir_type_wchar_t;
1265 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1266 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1269 ident *const id = id_unique("Lstr.%u");
1270 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1271 set_entity_ld_ident(entity, id);
1272 set_entity_variability(entity, variability_constant);
1273 set_entity_allocation(entity, allocation_static);
1275 ir_mode *const mode = get_type_mode(elem_type);
1277 const wchar_rep_t *const string = literal->value.begin;
1278 const size_t slen = literal->value.size;
1280 set_array_lower_bound_int(type, 0, 0);
1281 set_array_upper_bound_int(type, 0, slen);
1282 set_type_size_bytes(type, slen);
1283 set_type_state(type, layout_fixed);
1285 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1286 for (size_t i = 0; i < slen; ++i) {
1287 tvs[i] = new_tarval_from_long(string[i], mode);
1290 set_array_entity_values(entity, tvs, slen);
1293 return create_symconst(dbgi, mode_P_data, entity);
1296 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1297 ir_node *const addr)
1299 ir_type *irtype = get_ir_type(type);
1300 if (is_compound_type(irtype)
1301 || is_Method_type(irtype)
1302 || is_Array_type(irtype)) {
1306 ir_mode *const mode = get_type_mode(irtype);
1307 ir_node *const memory = get_store();
1308 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1309 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1310 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1312 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1313 set_Load_volatility(load, volatility_is_volatile);
1316 set_store(load_mem);
1321 * Creates a strict Conv if neccessary.
1323 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1325 ir_mode *mode = get_irn_mode(node);
1327 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1329 if (!mode_is_float(mode))
1332 /* check if there is already a Conv */
1333 if (is_Conv(node)) {
1334 /* convert it into a strict Conv */
1335 set_Conv_strict(node, 1);
1339 /* otherwise create a new one */
1340 return new_d_strictConv(dbgi, node, mode);
1343 static ir_node *get_global_var_address(dbg_info *const dbgi,
1344 const entity_t *const entity)
1346 assert(entity->kind == ENTITY_VARIABLE);
1347 assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1349 ir_entity *const irentity = entity->variable.v.entity;
1350 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1351 case STORAGE_CLASS_THREAD:
1352 case STORAGE_CLASS_THREAD_EXTERN:
1353 case STORAGE_CLASS_THREAD_STATIC: {
1354 ir_node *const no_mem = new_NoMem();
1355 ir_node *const tls = get_irg_tls(current_ir_graph);
1356 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1360 return create_symconst(dbgi, mode_P_data, irentity);
1365 * Returns the correct base address depending on whether it is a parameter or a
1366 * normal local variable.
1368 static ir_node *get_local_frame(ir_entity *const ent)
1370 ir_graph *const irg = current_ir_graph;
1371 const ir_type *const owner = get_entity_owner(ent);
1372 if (owner == get_irg_frame_type(irg)) {
1373 return get_irg_frame(irg);
1375 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1376 return get_irg_value_param_base(irg);
1380 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1382 ir_mode *value_mode = get_irn_mode(value);
1384 if (value_mode == dest_mode || is_Bad(value))
1387 if (dest_mode == mode_b) {
1388 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1389 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1390 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1394 return new_d_Conv(dbgi, value, dest_mode);
1398 * Keep all memory edges of the given block.
1400 static void keep_all_memory(ir_node *block) {
1401 ir_node *old = get_cur_block();
1403 set_cur_block(block);
1404 keep_alive(get_store());
1405 /* TODO: keep all memory edges from restricted pointers */
1409 static ir_node *reference_expression_enum_value_to_firm(
1410 const reference_expression_t *ref)
1412 entity_t *entity = ref->entity;
1413 type_t *type = skip_typeref(entity->enum_value.enum_type);
1414 /* make sure the type is constructed */
1415 (void) get_ir_type(type);
1417 ir_mode *const mode = get_ir_mode(type);
1418 return new_Const(mode, entity->enum_value.tv);
1421 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1423 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1424 entity_t *entity = ref->entity;
1425 assert(is_declaration(entity));
1426 type_t *type = skip_typeref(entity->declaration.type);
1428 /* make sure the type is constructed */
1429 (void) get_ir_type(type);
1431 switch ((declaration_kind_t) entity->declaration.kind) {
1432 case DECLARATION_KIND_UNKNOWN:
1435 case DECLARATION_KIND_LOCAL_VARIABLE: {
1436 ir_mode *const mode = get_ir_mode(type);
1437 return get_value(entity->variable.v.value_number, mode);
1439 case DECLARATION_KIND_FUNCTION: {
1440 ir_mode *const mode = get_ir_mode(type);
1441 return create_symconst(dbgi, mode, entity->function.entity);
1443 case DECLARATION_KIND_INNER_FUNCTION: {
1444 ir_mode *const mode = get_ir_mode(type);
1445 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1446 /* inner function not using the closure */
1447 return create_symconst(dbgi, mode, entity->function.entity);
1449 /* TODO: need trampoline here */
1450 panic("Trampoline code not implemented");
1451 return create_symconst(dbgi, mode, entity->function.entity);
1454 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1455 ir_node *const addr = get_global_var_address(dbgi, entity);
1456 return deref_address(dbgi, entity->declaration.type, addr);
1459 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1460 ir_entity *irentity = entity->variable.v.entity;
1461 ir_node *frame = get_local_frame(irentity);
1462 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1463 return deref_address(dbgi, entity->declaration.type, sel);
1466 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1467 return entity->variable.v.vla_base;
1469 case DECLARATION_KIND_COMPOUND_MEMBER:
1470 panic("not implemented reference type");
1473 panic("reference to declaration with unknown type found");
1476 static ir_node *reference_addr(const reference_expression_t *ref)
1478 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1479 entity_t *entity = ref->entity;
1480 assert(is_declaration(entity));
1482 switch((declaration_kind_t) entity->declaration.kind) {
1483 case DECLARATION_KIND_UNKNOWN:
1485 case DECLARATION_KIND_LOCAL_VARIABLE:
1486 /* you can store to a local variable (so we don't panic but return NULL
1487 * as an indicator for no real address) */
1489 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1490 ir_node *const addr = get_global_var_address(dbgi, entity);
1493 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1494 ir_entity *irentity = entity->variable.v.entity;
1495 ir_node *frame = get_local_frame(irentity);
1496 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1501 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1502 return entity->variable.v.vla_base;
1504 case DECLARATION_KIND_FUNCTION: {
1505 type_t *const type = skip_typeref(entity->declaration.type);
1506 ir_mode *const mode = get_ir_mode(type);
1507 return create_symconst(dbgi, mode, entity->function.entity);
1510 case DECLARATION_KIND_INNER_FUNCTION:
1511 case DECLARATION_KIND_COMPOUND_MEMBER:
1512 panic("not implemented reference type");
1515 panic("reference to declaration with unknown type found");
1519 * Transform calls to builtin functions.
1521 static ir_node *process_builtin_call(const call_expression_t *call)
1523 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1525 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1526 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1528 type_t *type = skip_typeref(builtin->base.type);
1529 assert(is_type_pointer(type));
1531 type_t *function_type = skip_typeref(type->pointer.points_to);
1532 symbol_t *symbol = builtin->symbol;
1534 switch(symbol->ID) {
1535 case T___builtin_alloca: {
1536 if (call->arguments == NULL || call->arguments->next != NULL) {
1537 panic("invalid number of parameters on __builtin_alloca");
1539 expression_t *argument = call->arguments->expression;
1540 ir_node *size = expression_to_firm(argument);
1542 ir_node *store = get_store();
1543 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1545 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1547 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1552 case T___builtin_huge_val:
1553 case T___builtin_inf:
1554 case T___builtin_inff:
1555 case T___builtin_infl: {
1556 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1557 tarval *tv = get_mode_infinite(mode);
1558 ir_node *res = new_d_Const(dbgi, mode, tv);
1561 case T___builtin_nan:
1562 case T___builtin_nanf:
1563 case T___builtin_nanl: {
1564 /* Ignore string for now... */
1565 assert(is_type_function(function_type));
1566 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1567 tarval *tv = get_mode_NAN(mode);
1568 ir_node *res = new_d_Const(dbgi, mode, tv);
1571 case T___builtin_va_end:
1574 panic("Unsupported builtin found\n");
1579 * Transform a call expression.
1580 * Handles some special cases, like alloca() calls, which must be resolved
1581 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1582 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1585 static ir_node *call_expression_to_firm(const call_expression_t *call)
1587 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1588 assert(get_cur_block() != NULL);
1590 expression_t *function = call->function;
1591 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1592 return process_builtin_call(call);
1594 if (function->kind == EXPR_REFERENCE) {
1595 const reference_expression_t *ref = &function->reference;
1596 entity_t *entity = ref->entity;
1598 if (entity->kind == ENTITY_FUNCTION
1599 && entity->function.entity == rts_entities[rts_alloca]) {
1600 /* handle alloca() call */
1601 expression_t *argument = call->arguments->expression;
1602 ir_node *size = expression_to_firm(argument);
1604 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1606 ir_node *store = get_store();
1607 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1608 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1610 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1612 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1617 ir_node *callee = expression_to_firm(function);
1619 type_t *type = skip_typeref(function->base.type);
1620 assert(is_type_pointer(type));
1621 pointer_type_t *pointer_type = &type->pointer;
1622 type_t *points_to = skip_typeref(pointer_type->points_to);
1623 assert(is_type_function(points_to));
1624 function_type_t *function_type = &points_to->function;
1626 int n_parameters = 0;
1627 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1628 ir_type *new_method_type = NULL;
1629 if (function_type->variadic || function_type->unspecified_parameters) {
1630 const call_argument_t *argument = call->arguments;
1631 for ( ; argument != NULL; argument = argument->next) {
1635 /* we need to construct a new method type matching the call
1637 int n_res = get_method_n_ress(ir_method_type);
1638 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1639 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1640 n_parameters, n_res, dbgi);
1641 set_method_calling_convention(new_method_type,
1642 get_method_calling_convention(ir_method_type));
1643 set_method_additional_properties(new_method_type,
1644 get_method_additional_properties(ir_method_type));
1645 set_method_variadicity(new_method_type,
1646 get_method_variadicity(ir_method_type));
1648 for (int i = 0; i < n_res; ++i) {
1649 set_method_res_type(new_method_type, i,
1650 get_method_res_type(ir_method_type, i));
1652 argument = call->arguments;
1653 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1654 expression_t *expression = argument->expression;
1655 ir_type *irtype = get_ir_type(expression->base.type);
1656 set_method_param_type(new_method_type, i, irtype);
1658 ir_method_type = new_method_type;
1660 n_parameters = get_method_n_params(ir_method_type);
1663 ir_node *in[n_parameters];
1665 const call_argument_t *argument = call->arguments;
1666 for (int n = 0; n < n_parameters; ++n) {
1667 expression_t *expression = argument->expression;
1668 ir_node *arg_node = expression_to_firm(expression);
1670 arg_node = do_strict_conv(dbgi, arg_node);
1674 argument = argument->next;
1677 ir_node *store = get_store();
1678 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1680 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1683 type_t *return_type = skip_typeref(function_type->return_type);
1684 ir_node *result = NULL;
1686 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1688 if (is_type_scalar(return_type)) {
1689 mode = get_ir_mode(return_type);
1693 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1694 result = new_d_Proj(dbgi, resproj, mode, 0);
1697 if (function->kind == EXPR_REFERENCE &&
1698 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1699 /* A dead end: Keep the Call and the Block. Also place all further
1700 * nodes into a new and unreachable block. */
1702 keep_alive(get_cur_block());
1709 static void statement_to_firm(statement_t *statement);
1710 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1712 static ir_node *expression_to_addr(const expression_t *expression);
1713 static ir_node *create_condition_evaluation(const expression_t *expression,
1714 ir_node *true_block,
1715 ir_node *false_block);
1717 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1720 value = do_strict_conv(dbgi, value);
1722 ir_node *memory = get_store();
1724 if (is_type_scalar(type)) {
1725 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1726 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1727 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1728 set_Store_volatility(store, volatility_is_volatile);
1729 set_store(store_mem);
1731 ir_type *irtype = get_ir_type(type);
1732 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1733 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1734 set_store(copyb_mem);
1738 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1740 tarval *all_one = get_mode_all_one(mode);
1741 int mode_size = get_mode_size_bits(mode);
1743 assert(offset >= 0);
1745 assert(offset + size <= mode_size);
1746 if (size == mode_size) {
1750 long shiftr = get_mode_size_bits(mode) - size;
1751 long shiftl = offset;
1752 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1753 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1754 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1755 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1760 static void bitfield_store_to_firm(dbg_info *dbgi,
1761 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1763 ir_type *entity_type = get_entity_type(entity);
1764 ir_type *base_type = get_primitive_base_type(entity_type);
1765 assert(base_type != NULL);
1766 ir_mode *mode = get_type_mode(base_type);
1768 value = create_conv(dbgi, value, mode);
1770 /* kill upper bits of value and shift to right position */
1771 int bitoffset = get_entity_offset_bits_remainder(entity);
1772 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1774 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1775 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1776 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1777 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1778 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1779 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1781 /* load current value */
1782 ir_node *mem = get_store();
1783 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1784 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1785 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1786 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1787 tarval *inv_mask = tarval_not(shift_mask);
1788 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1789 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1791 /* construct new value and store */
1792 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1793 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1794 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1795 set_store(store_mem);
1798 set_Load_volatility(load, volatility_is_volatile);
1799 set_Store_volatility(store, volatility_is_volatile);
1803 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1806 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1807 type_t *type = expression->base.type;
1808 ir_mode *mode = get_ir_mode(type);
1809 ir_node *mem = get_store();
1810 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1811 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1812 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1814 load_res = create_conv(dbgi, load_res, mode_int);
1816 set_store(load_mem);
1818 /* kill upper bits */
1819 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1820 ir_entity *entity = expression->compound_entry->compound_member.entity;
1821 int bitoffset = get_entity_offset_bits_remainder(entity);
1822 ir_type *entity_type = get_entity_type(entity);
1823 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1824 long shift_bitsl = machine_size - bitoffset - bitsize;
1825 assert(shift_bitsl >= 0);
1826 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1827 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1828 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1830 long shift_bitsr = bitoffset + shift_bitsl;
1831 assert(shift_bitsr <= (long) machine_size);
1832 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1833 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1835 if (mode_is_signed(mode)) {
1836 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1838 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1841 return create_conv(dbgi, shiftr, mode);
1844 /* make sure the selected compound type is constructed */
1845 static void construct_select_compound(const select_expression_t *expression)
1847 type_t *type = skip_typeref(expression->compound->base.type);
1848 if (is_type_pointer(type)) {
1849 type = type->pointer.points_to;
1851 (void) get_ir_type(type);
1854 static void set_value_for_expression_addr(const expression_t *expression,
1855 ir_node *value, ir_node *addr)
1857 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1858 value = do_strict_conv(dbgi, value);
1860 if (expression->kind == EXPR_REFERENCE) {
1861 const reference_expression_t *ref = &expression->reference;
1863 entity_t *entity = ref->entity;
1864 assert(is_declaration(entity));
1865 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1866 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1867 set_value(entity->variable.v.value_number, value);
1873 addr = expression_to_addr(expression);
1875 type_t *type = skip_typeref(expression->base.type);
1877 if (expression->kind == EXPR_SELECT) {
1878 const select_expression_t *select = &expression->select;
1880 construct_select_compound(select);
1882 entity_t *entity = select->compound_entry;
1883 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1884 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1885 ir_entity *irentity = entity->compound_member.entity;
1887 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1888 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1893 assign_value(dbgi, addr, type, value);
1896 static void set_value_for_expression(const expression_t *expression,
1899 set_value_for_expression_addr(expression, value, NULL);
1902 static ir_node *get_value_from_lvalue(const expression_t *expression,
1905 if (expression->kind == EXPR_REFERENCE) {
1906 const reference_expression_t *ref = &expression->reference;
1908 entity_t *entity = ref->entity;
1909 assert(entity->kind == ENTITY_VARIABLE);
1910 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1911 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1912 assert(addr == NULL);
1913 ir_mode *mode = get_ir_mode(expression->base.type);
1914 return get_value(entity->variable.v.value_number, mode);
1918 assert(addr != NULL);
1919 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1922 if (expression->kind == EXPR_SELECT &&
1923 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1924 construct_select_compound(&expression->select);
1925 value = bitfield_extract_to_firm(&expression->select, addr);
1927 value = deref_address(dbgi, expression->base.type, addr);
1934 static ir_node *create_incdec(const unary_expression_t *expression)
1936 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1937 const expression_t *value_expr = expression->value;
1938 ir_node *addr = expression_to_addr(value_expr);
1939 ir_node *value = get_value_from_lvalue(value_expr, addr);
1941 type_t *type = skip_typeref(expression->base.type);
1942 ir_mode *mode = get_ir_mode(expression->base.type);
1945 if (is_type_pointer(type)) {
1946 pointer_type_t *pointer_type = &type->pointer;
1947 offset = get_type_size(pointer_type->points_to);
1949 assert(is_type_arithmetic(type));
1950 offset = new_Const(mode, get_mode_one(mode));
1954 ir_node *store_value;
1955 switch(expression->base.kind) {
1956 case EXPR_UNARY_POSTFIX_INCREMENT:
1958 store_value = new_d_Add(dbgi, value, offset, mode);
1960 case EXPR_UNARY_POSTFIX_DECREMENT:
1962 store_value = new_d_Sub(dbgi, value, offset, mode);
1964 case EXPR_UNARY_PREFIX_INCREMENT:
1965 result = new_d_Add(dbgi, value, offset, mode);
1966 store_value = result;
1968 case EXPR_UNARY_PREFIX_DECREMENT:
1969 result = new_d_Sub(dbgi, value, offset, mode);
1970 store_value = result;
1973 panic("no incdec expr in create_incdec");
1976 set_value_for_expression_addr(value_expr, store_value, addr);
1981 static bool is_local_variable(expression_t *expression)
1983 if (expression->kind != EXPR_REFERENCE)
1985 reference_expression_t *ref_expr = &expression->reference;
1986 entity_t *entity = ref_expr->entity;
1987 if (entity->kind != ENTITY_VARIABLE)
1989 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1990 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
1993 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1996 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1997 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1998 case EXPR_BINARY_NOTEQUAL:
1999 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2000 case EXPR_BINARY_ISLESS:
2001 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2002 case EXPR_BINARY_ISLESSEQUAL:
2003 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2004 case EXPR_BINARY_ISGREATER:
2005 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2006 case EXPR_BINARY_ISGREATEREQUAL:
2007 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2008 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2013 panic("trying to get pn_Cmp from non-comparison binexpr type");
2017 * Handle the assume optimizer hint: check if a Confirm
2018 * node can be created.
2020 * @param dbi debug info
2021 * @param expr the IL assume expression
2023 * we support here only some simple cases:
2028 static ir_node *handle_assume_compare(dbg_info *dbi,
2029 const binary_expression_t *expression)
2031 expression_t *op1 = expression->left;
2032 expression_t *op2 = expression->right;
2033 entity_t *var2, *var = NULL;
2034 ir_node *res = NULL;
2037 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2039 if (is_local_variable(op1) && is_local_variable(op2)) {
2040 var = op1->reference.entity;
2041 var2 = op2->reference.entity;
2043 type_t *const type = skip_typeref(var->declaration.type);
2044 ir_mode *const mode = get_ir_mode(type);
2046 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2047 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2049 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2050 set_value(var2->variable.v.value_number, res);
2052 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2053 set_value(var->variable.v.value_number, res);
2059 if (is_local_variable(op1) && is_constant_expression(op2)) {
2060 var = op1->reference.entity;
2062 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2063 cmp_val = get_inversed_pnc(cmp_val);
2064 var = op2->reference.entity;
2069 type_t *const type = skip_typeref(var->declaration.type);
2070 ir_mode *const mode = get_ir_mode(type);
2072 res = get_value(var->variable.v.value_number, mode);
2073 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2074 set_value(var->variable.v.value_number, res);
2080 * Handle the assume optimizer hint.
2082 * @param dbi debug info
2083 * @param expr the IL assume expression
2085 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2086 switch(expression->kind) {
2087 case EXPR_BINARY_EQUAL:
2088 case EXPR_BINARY_NOTEQUAL:
2089 case EXPR_BINARY_LESS:
2090 case EXPR_BINARY_LESSEQUAL:
2091 case EXPR_BINARY_GREATER:
2092 case EXPR_BINARY_GREATEREQUAL:
2093 return handle_assume_compare(dbi, &expression->binary);
2099 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2101 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2102 type_t *type = skip_typeref(expression->base.type);
2104 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2105 return expression_to_addr(expression->value);
2107 const expression_t *value = expression->value;
2109 switch(expression->base.kind) {
2110 case EXPR_UNARY_NEGATE: {
2111 ir_node *value_node = expression_to_firm(value);
2112 ir_mode *mode = get_ir_mode(type);
2113 return new_d_Minus(dbgi, value_node, mode);
2115 case EXPR_UNARY_PLUS:
2116 return expression_to_firm(value);
2117 case EXPR_UNARY_BITWISE_NEGATE: {
2118 ir_node *value_node = expression_to_firm(value);
2119 ir_mode *mode = get_ir_mode(type);
2120 return new_d_Not(dbgi, value_node, mode);
2122 case EXPR_UNARY_NOT: {
2123 ir_node *value_node = _expression_to_firm(value);
2124 value_node = create_conv(dbgi, value_node, mode_b);
2125 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2128 case EXPR_UNARY_DEREFERENCE: {
2129 ir_node *value_node = expression_to_firm(value);
2130 type_t *value_type = skip_typeref(value->base.type);
2131 assert(is_type_pointer(value_type));
2132 type_t *points_to = value_type->pointer.points_to;
2133 return deref_address(dbgi, points_to, value_node);
2135 case EXPR_UNARY_POSTFIX_INCREMENT:
2136 case EXPR_UNARY_POSTFIX_DECREMENT:
2137 case EXPR_UNARY_PREFIX_INCREMENT:
2138 case EXPR_UNARY_PREFIX_DECREMENT:
2139 return create_incdec(expression);
2140 case EXPR_UNARY_CAST: {
2141 ir_node *value_node = expression_to_firm(value);
2142 if (is_type_scalar(type)) {
2143 ir_mode *mode = get_ir_mode(type);
2144 ir_node *node = create_conv(dbgi, value_node, mode);
2145 node = do_strict_conv(dbgi, node);
2148 /* make sure firm type is constructed */
2149 (void) get_ir_type(type);
2153 case EXPR_UNARY_CAST_IMPLICIT: {
2154 ir_node *value_node = expression_to_firm(value);
2155 if (is_type_scalar(type)) {
2156 ir_mode *mode = get_ir_mode(type);
2157 return create_conv(dbgi, value_node, mode);
2162 case EXPR_UNARY_ASSUME:
2163 if (firm_opt.confirm)
2164 return handle_assume(dbgi, value);
2171 panic("invalid UNEXPR type found");
2175 * produces a 0/1 depending of the value of a mode_b node
2177 static ir_node *produce_condition_result(const expression_t *expression,
2180 ir_mode *mode = get_ir_mode(expression->base.type);
2181 ir_node *cur_block = get_cur_block();
2183 ir_node *one_block = new_immBlock();
2184 ir_node *one = new_Const(mode, get_mode_one(mode));
2185 ir_node *jmp_one = new_d_Jmp(dbgi);
2187 ir_node *zero_block = new_immBlock();
2188 ir_node *zero = new_Const(mode, get_mode_null(mode));
2189 ir_node *jmp_zero = new_d_Jmp(dbgi);
2191 set_cur_block(cur_block);
2192 create_condition_evaluation(expression, one_block, zero_block);
2193 mature_immBlock(one_block);
2194 mature_immBlock(zero_block);
2196 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2197 new_Block(2, in_cf);
2199 ir_node *in[2] = { one, zero };
2200 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2205 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2206 ir_node *value, type_t *type)
2208 pointer_type_t *const pointer_type = &type->pointer;
2209 type_t *const points_to = skip_typeref(pointer_type->points_to);
2210 unsigned elem_size = get_type_size_const(points_to);
2212 /* gcc extension: allow arithmetic with void * and function * */
2213 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2214 is_type_function(points_to)) {
2218 assert(elem_size >= 1);
2222 value = create_conv(dbgi, value, mode_int);
2223 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2224 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2228 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2229 ir_node *left, ir_node *right)
2232 type_t *type_left = skip_typeref(expression->left->base.type);
2233 type_t *type_right = skip_typeref(expression->right->base.type);
2235 expression_kind_t kind = expression->base.kind;
2238 case EXPR_BINARY_SHIFTLEFT:
2239 case EXPR_BINARY_SHIFTRIGHT:
2240 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2241 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2242 mode = get_irn_mode(left);
2243 right = create_conv(dbgi, right, mode_uint);
2246 case EXPR_BINARY_SUB:
2247 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2248 const pointer_type_t *const ptr_type = &type_left->pointer;
2250 mode = get_ir_mode(expression->base.type);
2251 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2252 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2253 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2254 ir_node *const no_mem = new_NoMem();
2255 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2256 mode, op_pin_state_floats);
2257 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2260 case EXPR_BINARY_SUB_ASSIGN:
2261 if (is_type_pointer(type_left)) {
2262 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2263 mode = get_ir_mode(type_left);
2268 case EXPR_BINARY_ADD:
2269 case EXPR_BINARY_ADD_ASSIGN:
2270 if (is_type_pointer(type_left)) {
2271 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2272 mode = get_ir_mode(type_left);
2274 } else if (is_type_pointer(type_right)) {
2275 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2276 mode = get_ir_mode(type_right);
2283 mode = get_irn_mode(right);
2284 left = create_conv(dbgi, left, mode);
2289 case EXPR_BINARY_ADD_ASSIGN:
2290 case EXPR_BINARY_ADD:
2291 return new_d_Add(dbgi, left, right, mode);
2292 case EXPR_BINARY_SUB_ASSIGN:
2293 case EXPR_BINARY_SUB:
2294 return new_d_Sub(dbgi, left, right, mode);
2295 case EXPR_BINARY_MUL_ASSIGN:
2296 case EXPR_BINARY_MUL:
2297 return new_d_Mul(dbgi, left, right, mode);
2298 case EXPR_BINARY_BITWISE_AND:
2299 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2300 return new_d_And(dbgi, left, right, mode);
2301 case EXPR_BINARY_BITWISE_OR:
2302 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2303 return new_d_Or(dbgi, left, right, mode);
2304 case EXPR_BINARY_BITWISE_XOR:
2305 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2306 return new_d_Eor(dbgi, left, right, mode);
2307 case EXPR_BINARY_SHIFTLEFT:
2308 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2309 return new_d_Shl(dbgi, left, right, mode);
2310 case EXPR_BINARY_SHIFTRIGHT:
2311 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2312 if (mode_is_signed(mode)) {
2313 return new_d_Shrs(dbgi, left, right, mode);
2315 return new_d_Shr(dbgi, left, right, mode);
2317 case EXPR_BINARY_DIV:
2318 case EXPR_BINARY_DIV_ASSIGN: {
2319 ir_node *pin = new_Pin(new_NoMem());
2322 if (mode_is_float(mode)) {
2323 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2324 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2326 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2327 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2331 case EXPR_BINARY_MOD:
2332 case EXPR_BINARY_MOD_ASSIGN: {
2333 ir_node *pin = new_Pin(new_NoMem());
2334 assert(!mode_is_float(mode));
2335 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2336 op_pin_state_floats);
2337 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2341 panic("unexpected expression kind");
2345 static ir_node *create_lazy_op(const binary_expression_t *expression)
2347 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2348 type_t *type = expression->base.type;
2349 ir_mode *mode = get_ir_mode(type);
2351 if (is_constant_expression(expression->left)) {
2352 long val = fold_constant(expression->left);
2353 expression_kind_t ekind = expression->base.kind;
2354 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2355 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2356 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2357 return expression_to_firm(expression->right);
2359 return new_Const(mode, get_mode_one(mode));
2363 return produce_condition_result((const expression_t*) expression, dbgi);
2366 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2367 ir_node *right, ir_mode *mode);
2369 static ir_node *create_assign_binop(const binary_expression_t *expression)
2371 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2372 const expression_t *left_expr = expression->left;
2373 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2374 ir_node *right = expression_to_firm(expression->right);
2375 ir_node *left_addr = expression_to_addr(left_expr);
2376 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2377 ir_node *result = create_op(dbgi, expression, left, right);
2379 result = create_conv(dbgi, result, left_mode);
2380 result = do_strict_conv(dbgi, result);
2382 set_value_for_expression_addr(left_expr, result, left_addr);
2387 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2389 expression_kind_t kind = expression->base.kind;
2392 case EXPR_BINARY_EQUAL:
2393 case EXPR_BINARY_NOTEQUAL:
2394 case EXPR_BINARY_LESS:
2395 case EXPR_BINARY_LESSEQUAL:
2396 case EXPR_BINARY_GREATER:
2397 case EXPR_BINARY_GREATEREQUAL:
2398 case EXPR_BINARY_ISGREATER:
2399 case EXPR_BINARY_ISGREATEREQUAL:
2400 case EXPR_BINARY_ISLESS:
2401 case EXPR_BINARY_ISLESSEQUAL:
2402 case EXPR_BINARY_ISLESSGREATER:
2403 case EXPR_BINARY_ISUNORDERED: {
2404 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2405 ir_node *left = expression_to_firm(expression->left);
2406 ir_node *right = expression_to_firm(expression->right);
2407 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2408 long pnc = get_pnc(kind, expression->left->base.type);
2409 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2412 case EXPR_BINARY_ASSIGN: {
2413 ir_node *addr = expression_to_addr(expression->left);
2414 ir_node *right = expression_to_firm(expression->right);
2415 set_value_for_expression_addr(expression->left, right, addr);
2419 case EXPR_BINARY_ADD:
2420 case EXPR_BINARY_SUB:
2421 case EXPR_BINARY_MUL:
2422 case EXPR_BINARY_DIV:
2423 case EXPR_BINARY_MOD:
2424 case EXPR_BINARY_BITWISE_AND:
2425 case EXPR_BINARY_BITWISE_OR:
2426 case EXPR_BINARY_BITWISE_XOR:
2427 case EXPR_BINARY_SHIFTLEFT:
2428 case EXPR_BINARY_SHIFTRIGHT:
2430 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2431 ir_node *left = expression_to_firm(expression->left);
2432 ir_node *right = expression_to_firm(expression->right);
2433 return create_op(dbgi, expression, left, right);
2435 case EXPR_BINARY_LOGICAL_AND:
2436 case EXPR_BINARY_LOGICAL_OR:
2437 return create_lazy_op(expression);
2438 case EXPR_BINARY_COMMA:
2439 /* create side effects of left side */
2440 (void) expression_to_firm(expression->left);
2441 return _expression_to_firm(expression->right);
2443 case EXPR_BINARY_ADD_ASSIGN:
2444 case EXPR_BINARY_SUB_ASSIGN:
2445 case EXPR_BINARY_MUL_ASSIGN:
2446 case EXPR_BINARY_MOD_ASSIGN:
2447 case EXPR_BINARY_DIV_ASSIGN:
2448 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2449 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2450 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2451 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2452 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2453 return create_assign_binop(expression);
2454 case EXPR_BINARY_BUILTIN_EXPECT:
2455 return _expression_to_firm(expression->left);
2457 panic("TODO binexpr type");
2461 static ir_node *array_access_addr(const array_access_expression_t *expression)
2463 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2464 ir_node *base_addr = expression_to_firm(expression->array_ref);
2465 ir_node *offset = expression_to_firm(expression->index);
2467 type_t *offset_type = skip_typeref(expression->index->base.type);
2469 if (is_type_signed(offset_type)) {
2470 mode = get_ir_mode(type_ssize_t);
2472 mode = get_ir_mode(type_size_t);
2474 offset = create_conv(dbgi, offset, mode);
2476 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2477 assert(is_type_pointer(ref_type));
2478 pointer_type_t *pointer_type = &ref_type->pointer;
2480 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2481 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2482 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2484 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2489 static ir_node *array_access_to_firm(
2490 const array_access_expression_t *expression)
2492 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2493 ir_node *addr = array_access_addr(expression);
2494 type_t *type = revert_automatic_type_conversion(
2495 (const expression_t*) expression);
2496 type = skip_typeref(type);
2498 return deref_address(dbgi, type, addr);
2501 static long get_offsetof_offset(const offsetof_expression_t *expression)
2503 type_t *orig_type = expression->type;
2506 designator_t *designator = expression->designator;
2507 for ( ; designator != NULL; designator = designator->next) {
2508 type_t *type = skip_typeref(orig_type);
2509 /* be sure the type is constructed */
2510 (void) get_ir_type(type);
2512 if (designator->symbol != NULL) {
2513 assert(is_type_compound(type));
2514 symbol_t *symbol = designator->symbol;
2516 compound_t *compound = type->compound.compound;
2517 entity_t *iter = compound->members.entities;
2518 for ( ; iter != NULL; iter = iter->base.next) {
2519 if (iter->base.symbol == symbol) {
2523 assert(iter != NULL);
2525 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2526 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2527 offset += get_entity_offset(iter->compound_member.entity);
2529 orig_type = iter->declaration.type;
2531 expression_t *array_index = designator->array_index;
2532 assert(designator->array_index != NULL);
2533 assert(is_type_array(type));
2535 long index = fold_constant(array_index);
2536 ir_type *arr_type = get_ir_type(type);
2537 ir_type *elem_type = get_array_element_type(arr_type);
2538 long elem_size = get_type_size_bytes(elem_type);
2540 offset += index * elem_size;
2542 orig_type = type->array.element_type;
2549 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2551 ir_mode *mode = get_ir_mode(expression->base.type);
2552 long offset = get_offsetof_offset(expression);
2553 tarval *tv = new_tarval_from_long(offset, mode);
2554 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2556 return new_d_Const(dbgi, mode, tv);
2559 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2560 ir_entity *entity, type_t *type);
2562 static ir_node *compound_literal_to_firm(
2563 const compound_literal_expression_t *expression)
2565 type_t *type = expression->type;
2567 /* create an entity on the stack */
2568 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2570 ident *const id = id_unique("CompLit.%u");
2571 ir_type *const irtype = get_ir_type(type);
2572 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2573 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2574 set_entity_ld_ident(entity, id);
2576 set_entity_variability(entity, variability_uninitialized);
2578 /* create initialisation code */
2579 initializer_t *initializer = expression->initializer;
2580 create_local_initializer(initializer, dbgi, entity, type);
2582 /* create a sel for the compound literal address */
2583 ir_node *frame = get_local_frame(entity);
2584 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2589 * Transform a sizeof expression into Firm code.
2591 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2593 type_t *type = expression->type;
2595 type = expression->tp_expression->base.type;
2596 assert(type != NULL);
2599 type = skip_typeref(type);
2600 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2601 if (is_type_array(type) && type->array.is_vla
2602 && expression->tp_expression != NULL) {
2603 expression_to_firm(expression->tp_expression);
2606 return get_type_size(type);
2610 * Transform an alignof expression into Firm code.
2612 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2614 type_t *type = expression->type;
2616 /* beware: if expression is a variable reference, return the
2617 alignment of the variable. */
2618 const expression_t *tp_expression = expression->tp_expression;
2619 const entity_t *entity = expression_is_variable(tp_expression);
2620 if (entity != NULL) {
2621 /* TODO: get the alignment of this variable. */
2624 type = tp_expression->base.type;
2625 assert(type != NULL);
2628 ir_mode *const mode = get_ir_mode(expression->base.type);
2629 symconst_symbol sym;
2630 sym.type_p = get_ir_type(type);
2631 return new_SymConst(mode, sym, symconst_type_align);
2634 static void init_ir_types(void);
2636 long fold_constant(const expression_t *expression)
2638 assert(is_type_valid(skip_typeref(expression->base.type)));
2640 bool constant_folding_old = constant_folding;
2641 constant_folding = true;
2645 assert(is_constant_expression(expression));
2647 ir_graph *old_current_ir_graph = current_ir_graph;
2648 if (current_ir_graph == NULL) {
2649 current_ir_graph = get_const_code_irg();
2652 ir_node *cnst = expression_to_firm(expression);
2653 current_ir_graph = old_current_ir_graph;
2655 if (!is_Const(cnst)) {
2656 panic("couldn't fold constant\n");
2659 tarval *tv = get_Const_tarval(cnst);
2660 if (!tarval_is_long(tv)) {
2661 panic("result of constant folding is not integer\n");
2664 constant_folding = constant_folding_old;
2666 return get_tarval_long(tv);
2669 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2671 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2673 /* first try to fold a constant condition */
2674 if (is_constant_expression(expression->condition)) {
2675 long val = fold_constant(expression->condition);
2677 expression_t *true_expression = expression->true_expression;
2678 if (true_expression == NULL)
2679 true_expression = expression->condition;
2680 return expression_to_firm(true_expression);
2682 return expression_to_firm(expression->false_expression);
2686 ir_node *cur_block = get_cur_block();
2688 /* create the true block */
2689 ir_node *true_block = new_immBlock();
2691 ir_node *true_val = expression->true_expression != NULL ?
2692 expression_to_firm(expression->true_expression) : NULL;
2693 ir_node *true_jmp = new_Jmp();
2695 /* create the false block */
2696 ir_node *false_block = new_immBlock();
2698 ir_node *false_val = expression_to_firm(expression->false_expression);
2699 ir_node *false_jmp = new_Jmp();
2701 /* create the condition evaluation */
2702 set_cur_block(cur_block);
2703 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2704 if (expression->true_expression == NULL) {
2705 if (cond_expr != NULL) {
2706 true_val = cond_expr;
2708 /* Condition ended with a short circuit (&&, ||, !) operation.
2709 * Generate a "1" as value for the true branch. */
2710 ir_mode *const mode = mode_Is;
2711 true_val = new_Const(mode, get_mode_one(mode));
2714 mature_immBlock(true_block);
2715 mature_immBlock(false_block);
2717 /* create the common block */
2718 ir_node *in_cf[2] = { true_jmp, false_jmp };
2719 new_Block(2, in_cf);
2721 /* TODO improve static semantics, so either both or no values are NULL */
2722 if (true_val == NULL || false_val == NULL)
2725 ir_node *in[2] = { true_val, false_val };
2726 ir_mode *mode = get_irn_mode(true_val);
2727 assert(get_irn_mode(false_val) == mode);
2728 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2734 * Returns an IR-node representing the address of a field.
2736 static ir_node *select_addr(const select_expression_t *expression)
2738 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2740 construct_select_compound(expression);
2742 ir_node *compound_addr = expression_to_firm(expression->compound);
2744 entity_t *entry = expression->compound_entry;
2745 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2746 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2747 ir_entity *irentity = entry->compound_member.entity;
2749 assert(irentity != NULL);
2751 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2756 static ir_node *select_to_firm(const select_expression_t *expression)
2758 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2759 ir_node *addr = select_addr(expression);
2760 type_t *type = revert_automatic_type_conversion(
2761 (const expression_t*) expression);
2762 type = skip_typeref(type);
2764 entity_t *entry = expression->compound_entry;
2765 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2766 type_t *entry_type = skip_typeref(entry->declaration.type);
2768 if (entry_type->kind == TYPE_BITFIELD) {
2769 return bitfield_extract_to_firm(expression, addr);
2772 return deref_address(dbgi, type, addr);
2775 /* Values returned by __builtin_classify_type. */
2776 typedef enum gcc_type_class
2782 enumeral_type_class,
2785 reference_type_class,
2789 function_type_class,
2800 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2802 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2808 const atomic_type_t *const atomic_type = &type->atomic;
2809 switch (atomic_type->akind) {
2810 /* should not be reached */
2811 case ATOMIC_TYPE_INVALID:
2815 /* gcc cannot do that */
2816 case ATOMIC_TYPE_VOID:
2817 tc = void_type_class;
2820 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2821 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2822 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2823 case ATOMIC_TYPE_SHORT:
2824 case ATOMIC_TYPE_USHORT:
2825 case ATOMIC_TYPE_INT:
2826 case ATOMIC_TYPE_UINT:
2827 case ATOMIC_TYPE_LONG:
2828 case ATOMIC_TYPE_ULONG:
2829 case ATOMIC_TYPE_LONGLONG:
2830 case ATOMIC_TYPE_ULONGLONG:
2831 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2832 tc = integer_type_class;
2835 case ATOMIC_TYPE_FLOAT:
2836 case ATOMIC_TYPE_DOUBLE:
2837 case ATOMIC_TYPE_LONG_DOUBLE:
2838 tc = real_type_class;
2841 panic("Unexpected atomic type in classify_type_to_firm().");
2844 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2845 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2846 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2847 case TYPE_ARRAY: /* gcc handles this as pointer */
2848 case TYPE_FUNCTION: /* gcc handles this as pointer */
2849 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2850 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2851 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2853 /* gcc handles this as integer */
2854 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2857 /* typedef/typeof should be skipped already */
2864 panic("unexpected TYPE classify_type_to_firm().");
2867 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2868 ir_mode *const mode = mode_int;
2869 tarval *const tv = new_tarval_from_long(tc, mode);
2870 return new_d_Const(dbgi, mode, tv);
2873 static ir_node *function_name_to_firm(
2874 const funcname_expression_t *const expr)
2876 switch(expr->kind) {
2877 case FUNCNAME_FUNCTION:
2878 case FUNCNAME_PRETTY_FUNCTION:
2879 case FUNCNAME_FUNCDNAME:
2880 if (current_function_name == NULL) {
2881 const source_position_t *const src_pos = &expr->base.source_position;
2882 const char *name = current_function_entity->base.symbol->string;
2883 const string_t string = { name, strlen(name) + 1 };
2884 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2886 return current_function_name;
2887 case FUNCNAME_FUNCSIG:
2888 if (current_funcsig == NULL) {
2889 const source_position_t *const src_pos = &expr->base.source_position;
2890 ir_entity *ent = get_irg_entity(current_ir_graph);
2891 const char *const name = get_entity_ld_name(ent);
2892 const string_t string = { name, strlen(name) + 1 };
2893 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2895 return current_funcsig;
2897 panic("Unsupported function name");
2900 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2902 statement_t *statement = expr->statement;
2904 assert(statement->kind == STATEMENT_COMPOUND);
2905 return compound_statement_to_firm(&statement->compound);
2908 static ir_node *va_start_expression_to_firm(
2909 const va_start_expression_t *const expr)
2911 type_t *const type = current_function_entity->declaration.type;
2912 ir_type *const method_type = get_ir_type(type);
2913 int const n = get_method_n_params(method_type) - 1;
2914 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2915 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2916 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2917 ir_node *const no_mem = new_NoMem();
2918 ir_node *const arg_sel =
2919 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2921 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2922 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2923 set_value_for_expression(expr->ap, add);
2928 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2930 type_t *const type = expr->base.type;
2931 expression_t *const ap_expr = expr->ap;
2932 ir_node *const ap_addr = expression_to_addr(ap_expr);
2933 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2934 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2935 ir_node *const res = deref_address(dbgi, type, ap);
2937 ir_node *const cnst = get_type_size(expr->base.type);
2938 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2940 set_value_for_expression_addr(ap_expr, add, ap_addr);
2945 static ir_node *dereference_addr(const unary_expression_t *const expression)
2947 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2948 return expression_to_firm(expression->value);
2952 * Returns a IR-node representing an lvalue of the given expression.
2954 static ir_node *expression_to_addr(const expression_t *expression)
2956 switch(expression->kind) {
2957 case EXPR_REFERENCE:
2958 return reference_addr(&expression->reference);
2959 case EXPR_ARRAY_ACCESS:
2960 return array_access_addr(&expression->array_access);
2962 return select_addr(&expression->select);
2964 return call_expression_to_firm(&expression->call);
2965 case EXPR_UNARY_DEREFERENCE: {
2966 return dereference_addr(&expression->unary);
2971 panic("trying to get address of non-lvalue");
2974 static ir_node *builtin_constant_to_firm(
2975 const builtin_constant_expression_t *expression)
2977 ir_mode *mode = get_ir_mode(expression->base.type);
2980 if (is_constant_expression(expression->value)) {
2985 return new_Const_long(mode, v);
2988 static ir_node *builtin_prefetch_to_firm(
2989 const builtin_prefetch_expression_t *expression)
2991 ir_node *adr = expression_to_firm(expression->adr);
2992 /* no Firm support for prefetch yet */
2997 static ir_node *get_label_block(label_t *label)
2999 if (label->block != NULL)
3000 return label->block;
3002 /* beware: might be called from create initializer with current_ir_graph
3003 * set to const_code_irg. */
3004 ir_graph *rem = current_ir_graph;
3005 current_ir_graph = current_function;
3007 ir_node *old_cur_block = get_cur_block();
3008 ir_node *block = new_immBlock();
3009 set_cur_block(old_cur_block);
3011 label->block = block;
3013 ARR_APP1(label_t *, all_labels, label);
3015 current_ir_graph = rem;
3020 * Pointer to a label. This is used for the
3021 * GNU address-of-label extension.
3023 static ir_node *label_address_to_firm(
3024 const label_address_expression_t *label)
3026 ir_node *block = get_label_block(label->label);
3027 ir_label_t nr = get_Block_label(block);
3030 nr = get_irp_next_label_nr();
3031 set_Block_label(block, nr);
3033 symconst_symbol value;
3035 return new_SymConst(mode_P_code, value, symconst_label);
3039 * creates firm nodes for an expression. The difference between this function
3040 * and expression_to_firm is, that this version might produce mode_b nodes
3041 * instead of mode_Is.
3043 static ir_node *_expression_to_firm(const expression_t *expression)
3046 if (!constant_folding) {
3047 assert(!expression->base.transformed);
3048 ((expression_t*) expression)->base.transformed = true;
3052 switch (expression->kind) {
3053 case EXPR_CHARACTER_CONSTANT:
3054 return character_constant_to_firm(&expression->conste);
3055 case EXPR_WIDE_CHARACTER_CONSTANT:
3056 return wide_character_constant_to_firm(&expression->conste);
3058 return const_to_firm(&expression->conste);
3059 case EXPR_STRING_LITERAL:
3060 return string_literal_to_firm(&expression->string);
3061 case EXPR_WIDE_STRING_LITERAL:
3062 return wide_string_literal_to_firm(&expression->wide_string);
3063 case EXPR_REFERENCE:
3064 return reference_expression_to_firm(&expression->reference);
3065 case EXPR_REFERENCE_ENUM_VALUE:
3066 return reference_expression_enum_value_to_firm(&expression->reference);
3068 return call_expression_to_firm(&expression->call);
3070 return unary_expression_to_firm(&expression->unary);
3072 return binary_expression_to_firm(&expression->binary);
3073 case EXPR_ARRAY_ACCESS:
3074 return array_access_to_firm(&expression->array_access);
3076 return sizeof_to_firm(&expression->typeprop);
3078 return alignof_to_firm(&expression->typeprop);
3079 case EXPR_CONDITIONAL:
3080 return conditional_to_firm(&expression->conditional);
3082 return select_to_firm(&expression->select);
3083 case EXPR_CLASSIFY_TYPE:
3084 return classify_type_to_firm(&expression->classify_type);
3086 return function_name_to_firm(&expression->funcname);
3087 case EXPR_STATEMENT:
3088 return statement_expression_to_firm(&expression->statement);
3090 return va_start_expression_to_firm(&expression->va_starte);
3092 return va_arg_expression_to_firm(&expression->va_arge);
3093 case EXPR_BUILTIN_SYMBOL:
3094 panic("unimplemented expression found");
3095 case EXPR_BUILTIN_CONSTANT_P:
3096 return builtin_constant_to_firm(&expression->builtin_constant);
3097 case EXPR_BUILTIN_PREFETCH:
3098 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3100 return offsetof_to_firm(&expression->offsetofe);
3101 case EXPR_COMPOUND_LITERAL:
3102 return compound_literal_to_firm(&expression->compound_literal);
3103 case EXPR_LABEL_ADDRESS:
3104 return label_address_to_firm(&expression->label_address);
3110 panic("invalid expression found");
3113 static bool produces_mode_b(const expression_t *expression)
3115 switch (expression->kind) {
3116 case EXPR_BINARY_EQUAL:
3117 case EXPR_BINARY_NOTEQUAL:
3118 case EXPR_BINARY_LESS:
3119 case EXPR_BINARY_LESSEQUAL:
3120 case EXPR_BINARY_GREATER:
3121 case EXPR_BINARY_GREATEREQUAL:
3122 case EXPR_BINARY_ISGREATER:
3123 case EXPR_BINARY_ISGREATEREQUAL:
3124 case EXPR_BINARY_ISLESS:
3125 case EXPR_BINARY_ISLESSEQUAL:
3126 case EXPR_BINARY_ISLESSGREATER:
3127 case EXPR_BINARY_ISUNORDERED:
3128 case EXPR_UNARY_NOT:
3131 case EXPR_BINARY_BUILTIN_EXPECT:
3132 return produces_mode_b(expression->binary.left);
3133 case EXPR_BINARY_COMMA:
3134 return produces_mode_b(expression->binary.right);
3141 static ir_node *expression_to_firm(const expression_t *expression)
3143 if (!produces_mode_b(expression)) {
3144 ir_node *res = _expression_to_firm(expression);
3145 assert(res == NULL || get_irn_mode(res) != mode_b);
3149 if (is_constant_expression(expression)) {
3150 ir_node *res = _expression_to_firm(expression);
3151 ir_mode *mode = get_ir_mode(expression->base.type);
3152 assert(is_Const(res));
3153 if (is_Const_null(res)) {
3154 return new_Const_long(mode, 0);
3156 return new_Const_long(mode, 1);
3160 /* we have to produce a 0/1 from the mode_b expression */
3161 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3162 return produce_condition_result(expression, dbgi);
3166 * create a short-circuit expression evaluation that tries to construct
3167 * efficient control flow structures for &&, || and ! expressions
3169 static ir_node *create_condition_evaluation(const expression_t *expression,
3170 ir_node *true_block,
3171 ir_node *false_block)
3173 switch(expression->kind) {
3174 case EXPR_UNARY_NOT: {
3175 const unary_expression_t *unary_expression = &expression->unary;
3176 create_condition_evaluation(unary_expression->value, false_block,
3180 case EXPR_BINARY_LOGICAL_AND: {
3181 const binary_expression_t *binary_expression = &expression->binary;
3183 ir_node *cur_block = get_cur_block();
3184 ir_node *extra_block = new_immBlock();
3185 set_cur_block(cur_block);
3186 create_condition_evaluation(binary_expression->left, extra_block,
3188 mature_immBlock(extra_block);
3189 set_cur_block(extra_block);
3190 create_condition_evaluation(binary_expression->right, true_block,
3194 case EXPR_BINARY_LOGICAL_OR: {
3195 const binary_expression_t *binary_expression = &expression->binary;
3197 ir_node *cur_block = get_cur_block();
3198 ir_node *extra_block = new_immBlock();
3199 set_cur_block(cur_block);
3200 create_condition_evaluation(binary_expression->left, true_block,
3202 mature_immBlock(extra_block);
3203 set_cur_block(extra_block);
3204 create_condition_evaluation(binary_expression->right, true_block,
3212 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3213 ir_node *cond_expr = _expression_to_firm(expression);
3214 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3215 ir_node *cond = new_d_Cond(dbgi, condition);
3216 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3217 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3219 /* set branch prediction info based on __builtin_expect */
3220 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3221 long cnst = fold_constant(expression->binary.right);
3222 cond_jmp_predicate pred;
3225 pred = COND_JMP_PRED_FALSE;
3227 pred = COND_JMP_PRED_TRUE;
3229 set_Cond_jmp_pred(cond, pred);
3232 add_immBlock_pred(true_block, true_proj);
3233 if (false_block != NULL) {
3234 add_immBlock_pred(false_block, false_proj);
3237 set_cur_block(NULL);
3242 static void create_variable_entity(entity_t *variable,
3243 declaration_kind_t declaration_kind,
3244 ir_type *parent_type)
3246 assert(variable->kind == ENTITY_VARIABLE);
3247 type_t *const type = skip_typeref(variable->declaration.type);
3248 ident *const id = new_id_from_str(variable->base.symbol->string);
3249 ir_type *const irtype = get_ir_type(type);
3250 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3251 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3253 handle_gnu_attributes_ent(irentity, variable);
3255 variable->declaration.kind = (unsigned char) declaration_kind;
3256 variable->variable.v.entity = irentity;
3257 set_entity_variability(irentity, variability_uninitialized);
3258 set_entity_ld_ident(irentity, create_ld_ident(variable));
3259 if (parent_type == get_tls_type())
3260 set_entity_allocation(irentity, allocation_automatic);
3261 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3262 set_entity_allocation(irentity, allocation_static);
3264 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3265 set_entity_volatility(irentity, volatility_is_volatile);
3270 typedef struct type_path_entry_t type_path_entry_t;
3271 struct type_path_entry_t {
3273 ir_initializer_t *initializer;
3275 entity_t *compound_entry;
3278 typedef struct type_path_t type_path_t;
3279 struct type_path_t {
3280 type_path_entry_t *path;
3285 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3287 size_t len = ARR_LEN(path->path);
3289 for (size_t i = 0; i < len; ++i) {
3290 const type_path_entry_t *entry = & path->path[i];
3292 type_t *type = skip_typeref(entry->type);
3293 if (is_type_compound(type)) {
3294 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3295 } else if (is_type_array(type)) {
3296 fprintf(stderr, "[%zu]", entry->index);
3298 fprintf(stderr, "-INVALID-");
3301 fprintf(stderr, " (");
3302 print_type(path->top_type);
3303 fprintf(stderr, ")");
3306 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3308 size_t len = ARR_LEN(path->path);
3310 return & path->path[len-1];
3313 static type_path_entry_t *append_to_type_path(type_path_t *path)
3315 size_t len = ARR_LEN(path->path);
3316 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3318 type_path_entry_t *result = & path->path[len];
3319 memset(result, 0, sizeof(result[0]));
3323 static size_t get_compound_member_count(const compound_type_t *type)
3325 compound_t *compound = type->compound;
3326 size_t n_members = 0;
3327 entity_t *member = compound->members.entities;
3328 for ( ; member != NULL; member = member->base.next) {
3335 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3337 type_t *orig_top_type = path->top_type;
3338 type_t *top_type = skip_typeref(orig_top_type);
3340 assert(is_type_compound(top_type) || is_type_array(top_type));
3342 if (ARR_LEN(path->path) == 0) {
3345 type_path_entry_t *top = get_type_path_top(path);
3346 ir_initializer_t *initializer = top->initializer;
3347 return get_initializer_compound_value(initializer, top->index);
3351 static void descend_into_subtype(type_path_t *path)
3353 type_t *orig_top_type = path->top_type;
3354 type_t *top_type = skip_typeref(orig_top_type);
3356 assert(is_type_compound(top_type) || is_type_array(top_type));
3358 ir_initializer_t *initializer = get_initializer_entry(path);
3360 type_path_entry_t *top = append_to_type_path(path);
3361 top->type = top_type;
3365 if (is_type_compound(top_type)) {
3366 compound_t *compound = top_type->compound.compound;
3367 entity_t *entry = compound->members.entities;
3369 top->compound_entry = entry;
3371 len = get_compound_member_count(&top_type->compound);
3372 if (entry != NULL) {
3373 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3374 path->top_type = entry->declaration.type;
3377 assert(is_type_array(top_type));
3378 assert(top_type->array.size > 0);
3381 path->top_type = top_type->array.element_type;
3382 len = top_type->array.size;
3384 if (initializer == NULL
3385 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3386 initializer = create_initializer_compound(len);
3387 /* we have to set the entry at the 2nd latest path entry... */
3388 size_t path_len = ARR_LEN(path->path);
3389 assert(path_len >= 1);
3391 type_path_entry_t *entry = & path->path[path_len-2];
3392 ir_initializer_t *tinitializer = entry->initializer;
3393 set_initializer_compound_value(tinitializer, entry->index,
3397 top->initializer = initializer;
3400 static void ascend_from_subtype(type_path_t *path)
3402 type_path_entry_t *top = get_type_path_top(path);
3404 path->top_type = top->type;
3406 size_t len = ARR_LEN(path->path);
3407 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3410 static void walk_designator(type_path_t *path, const designator_t *designator)
3412 /* designators start at current object type */
3413 ARR_RESIZE(type_path_entry_t, path->path, 1);
3415 for ( ; designator != NULL; designator = designator->next) {
3416 type_path_entry_t *top = get_type_path_top(path);
3417 type_t *orig_type = top->type;
3418 type_t *type = skip_typeref(orig_type);
3420 if (designator->symbol != NULL) {
3421 assert(is_type_compound(type));
3423 symbol_t *symbol = designator->symbol;
3425 compound_t *compound = type->compound.compound;
3426 entity_t *iter = compound->members.entities;
3427 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3428 if (iter->base.symbol == symbol) {
3429 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3433 assert(iter != NULL);
3435 top->type = orig_type;
3436 top->compound_entry = iter;
3438 orig_type = iter->declaration.type;
3440 expression_t *array_index = designator->array_index;
3441 assert(designator->array_index != NULL);
3442 assert(is_type_array(type));
3444 long index = fold_constant(array_index);
3447 if (type->array.size_constant) {
3448 long array_size = type->array.size;
3449 assert(index < array_size);
3453 top->type = orig_type;
3454 top->index = (size_t) index;
3455 orig_type = type->array.element_type;
3457 path->top_type = orig_type;
3459 if (designator->next != NULL) {
3460 descend_into_subtype(path);
3464 path->invalid = false;
3467 static void advance_current_object(type_path_t *path)
3469 if (path->invalid) {
3470 /* TODO: handle this... */
3471 panic("invalid initializer in ast2firm (excessive elements)");
3475 type_path_entry_t *top = get_type_path_top(path);
3477 type_t *type = skip_typeref(top->type);
3478 if (is_type_union(type)) {
3479 top->compound_entry = NULL;
3480 } else if (is_type_struct(type)) {
3481 entity_t *entry = top->compound_entry;
3484 entry = entry->base.next;
3485 top->compound_entry = entry;
3486 if (entry != NULL) {
3487 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3488 path->top_type = entry->declaration.type;
3492 assert(is_type_array(type));
3495 if (!type->array.size_constant || top->index < type->array.size) {
3500 /* we're past the last member of the current sub-aggregate, try if we
3501 * can ascend in the type hierarchy and continue with another subobject */
3502 size_t len = ARR_LEN(path->path);
3505 ascend_from_subtype(path);
3506 advance_current_object(path);
3508 path->invalid = true;
3513 static ir_initializer_t *create_ir_initializer(
3514 const initializer_t *initializer, type_t *type);
3516 static ir_initializer_t *create_ir_initializer_value(
3517 const initializer_value_t *initializer)
3519 if (is_type_compound(initializer->value->base.type)) {
3520 panic("initializer creation for compounds not implemented yet");
3522 ir_node *value = expression_to_firm(initializer->value);
3523 return create_initializer_const(value);
3526 /** test wether type can be initialized by a string constant */
3527 static bool is_string_type(type_t *type)
3530 if (is_type_pointer(type)) {
3531 inner = skip_typeref(type->pointer.points_to);
3532 } else if(is_type_array(type)) {
3533 inner = skip_typeref(type->array.element_type);
3538 return is_type_integer(inner);
3541 static ir_initializer_t *create_ir_initializer_list(
3542 const initializer_list_t *initializer, type_t *type)
3545 memset(&path, 0, sizeof(path));
3546 path.top_type = type;
3547 path.path = NEW_ARR_F(type_path_entry_t, 0);
3549 descend_into_subtype(&path);
3551 for (size_t i = 0; i < initializer->len; ++i) {
3552 const initializer_t *sub_initializer = initializer->initializers[i];
3554 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3555 walk_designator(&path, sub_initializer->designator.designator);
3559 if (sub_initializer->kind == INITIALIZER_VALUE) {
3560 /* we might have to descend into types until we're at a scalar
3563 type_t *orig_top_type = path.top_type;
3564 type_t *top_type = skip_typeref(orig_top_type);
3566 if (is_type_scalar(top_type))
3568 descend_into_subtype(&path);
3570 } else if (sub_initializer->kind == INITIALIZER_STRING
3571 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
3572 /* we might have to descend into types until we're at a scalar
3575 type_t *orig_top_type = path.top_type;
3576 type_t *top_type = skip_typeref(orig_top_type);
3578 if (is_string_type(top_type))
3580 descend_into_subtype(&path);
3584 ir_initializer_t *sub_irinitializer
3585 = create_ir_initializer(sub_initializer, path.top_type);
3587 size_t path_len = ARR_LEN(path.path);
3588 assert(path_len >= 1);
3589 type_path_entry_t *entry = & path.path[path_len-1];
3590 ir_initializer_t *tinitializer = entry->initializer;
3591 set_initializer_compound_value(tinitializer, entry->index,
3594 advance_current_object(&path);
3597 assert(ARR_LEN(path.path) >= 1);
3598 ir_initializer_t *result = path.path[0].initializer;
3599 DEL_ARR_F(path.path);
3604 static ir_initializer_t *create_ir_initializer_string(
3605 const initializer_string_t *initializer, type_t *type)
3607 type = skip_typeref(type);
3609 size_t string_len = initializer->string.size;
3610 assert(type->kind == TYPE_ARRAY);
3611 assert(type->array.size_constant);
3612 size_t len = type->array.size;
3613 ir_initializer_t *irinitializer = create_initializer_compound(len);
3615 const char *string = initializer->string.begin;
3616 ir_mode *mode = get_ir_mode(type->array.element_type);
3618 for (size_t i = 0; i < len; ++i) {
3623 tarval *tv = new_tarval_from_long(c, mode);
3624 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3626 set_initializer_compound_value(irinitializer, i, char_initializer);
3629 return irinitializer;
3632 static ir_initializer_t *create_ir_initializer_wide_string(
3633 const initializer_wide_string_t *initializer, type_t *type)
3635 size_t string_len = initializer->string.size;
3636 assert(type->kind == TYPE_ARRAY);
3637 assert(type->array.size_constant);
3638 size_t len = type->array.size;
3639 ir_initializer_t *irinitializer = create_initializer_compound(len);
3641 const wchar_rep_t *string = initializer->string.begin;
3642 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3644 for (size_t i = 0; i < len; ++i) {
3646 if (i < string_len) {
3649 tarval *tv = new_tarval_from_long(c, mode);
3650 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3652 set_initializer_compound_value(irinitializer, i, char_initializer);
3655 return irinitializer;
3658 static ir_initializer_t *create_ir_initializer(
3659 const initializer_t *initializer, type_t *type)
3661 switch(initializer->kind) {
3662 case INITIALIZER_STRING:
3663 return create_ir_initializer_string(&initializer->string, type);
3665 case INITIALIZER_WIDE_STRING:
3666 return create_ir_initializer_wide_string(&initializer->wide_string,
3669 case INITIALIZER_LIST:
3670 return create_ir_initializer_list(&initializer->list, type);
3672 case INITIALIZER_VALUE:
3673 return create_ir_initializer_value(&initializer->value);
3675 case INITIALIZER_DESIGNATOR:
3676 panic("unexpected designator initializer found");
3678 panic("unknown initializer");
3681 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3684 if (is_atomic_type(type)) {
3685 ir_mode *mode = get_type_mode(type);
3686 tarval *zero = get_mode_null(mode);
3687 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3689 /* TODO: bitfields */
3690 ir_node *mem = get_store();
3691 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3692 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3695 assert(is_compound_type(type));
3698 if (is_Array_type(type)) {
3699 assert(has_array_upper_bound(type, 0));
3700 n_members = get_array_upper_bound_int(type, 0);
3702 n_members = get_compound_n_members(type);
3705 for (int i = 0; i < n_members; ++i) {
3708 if (is_Array_type(type)) {
3709 ir_entity *entity = get_array_element_entity(type);
3710 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3711 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3712 ir_node *in[1] = { cnst };
3713 irtype = get_array_element_type(type);
3714 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3716 ir_entity *member = get_compound_member(type, i);
3718 irtype = get_entity_type(member);
3719 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3722 create_dynamic_null_initializer(irtype, dbgi, addr);
3727 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3728 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3730 switch(get_initializer_kind(initializer)) {
3731 case IR_INITIALIZER_NULL: {
3732 create_dynamic_null_initializer(type, dbgi, base_addr);
3735 case IR_INITIALIZER_CONST: {
3736 ir_node *node = get_initializer_const_value(initializer);
3737 ir_mode *mode = get_irn_mode(node);
3738 ir_type *ent_type = get_entity_type(entity);
3740 /* is it a bitfield type? */
3741 if (is_Primitive_type(ent_type) &&
3742 get_primitive_base_type(ent_type) != NULL) {
3743 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3747 assert(get_type_mode(type) == mode);
3748 ir_node *mem = get_store();
3749 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3750 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3754 case IR_INITIALIZER_TARVAL: {
3755 tarval *tv = get_initializer_tarval_value(initializer);
3756 ir_mode *mode = get_tarval_mode(tv);
3757 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3758 ir_type *ent_type = get_entity_type(entity);
3760 /* is it a bitfield type? */
3761 if (is_Primitive_type(ent_type) &&
3762 get_primitive_base_type(ent_type) != NULL) {
3763 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3767 assert(get_type_mode(type) == mode);
3768 ir_node *mem = get_store();
3769 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3770 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3774 case IR_INITIALIZER_COMPOUND: {
3775 assert(is_compound_type(type));
3777 if (is_Array_type(type)) {
3778 assert(has_array_upper_bound(type, 0));
3779 n_members = get_array_upper_bound_int(type, 0);
3781 n_members = get_compound_n_members(type);
3784 if (get_initializer_compound_n_entries(initializer)
3785 != (unsigned) n_members)
3786 panic("initializer doesn't match compound type");
3788 for (int i = 0; i < n_members; ++i) {
3791 ir_entity *sub_entity;
3792 if (is_Array_type(type)) {
3793 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3794 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3795 ir_node *in[1] = { cnst };
3796 irtype = get_array_element_type(type);
3797 sub_entity = get_array_element_entity(type);
3798 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3801 sub_entity = get_compound_member(type, i);
3802 irtype = get_entity_type(sub_entity);
3803 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3807 ir_initializer_t *sub_init
3808 = get_initializer_compound_value(initializer, i);
3810 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3817 panic("invalid IR_INITIALIZER found");
3820 static void create_dynamic_initializer(ir_initializer_t *initializer,
3821 dbg_info *dbgi, ir_entity *entity)
3823 ir_node *frame = get_local_frame(entity);
3824 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3825 ir_type *type = get_entity_type(entity);
3827 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3830 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3831 ir_entity *entity, type_t *type)
3833 ir_node *memory = get_store();
3834 ir_node *nomem = new_NoMem();
3835 ir_node *frame = get_irg_frame(current_ir_graph);
3836 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3838 if (initializer->kind == INITIALIZER_VALUE) {
3839 initializer_value_t *initializer_value = &initializer->value;
3841 ir_node *value = expression_to_firm(initializer_value->value);
3842 type = skip_typeref(type);
3843 assign_value(dbgi, addr, type, value);
3847 if (!is_constant_initializer(initializer)) {
3848 ir_initializer_t *irinitializer
3849 = create_ir_initializer(initializer, type);
3851 create_dynamic_initializer(irinitializer, dbgi, entity);
3855 /* create the ir_initializer */
3856 ir_graph *const old_current_ir_graph = current_ir_graph;
3857 current_ir_graph = get_const_code_irg();
3859 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3861 assert(current_ir_graph == get_const_code_irg());
3862 current_ir_graph = old_current_ir_graph;
3864 /* create a "template" entity which is copied to the entity on the stack */
3865 ident *const id = id_unique("initializer.%u");
3866 ir_type *const irtype = get_ir_type(type);
3867 ir_type *const global_type = get_glob_type();
3868 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3869 set_entity_ld_ident(init_entity, id);
3871 set_entity_variability(init_entity, variability_initialized);
3872 set_entity_visibility(init_entity, visibility_local);
3873 set_entity_allocation(init_entity, allocation_static);
3875 set_entity_initializer(init_entity, irinitializer);
3877 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3878 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3880 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3881 set_store(copyb_mem);
3884 static void create_initializer_local_variable_entity(entity_t *entity)
3886 assert(entity->kind == ENTITY_VARIABLE);
3887 initializer_t *initializer = entity->variable.initializer;
3888 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3889 ir_entity *irentity = entity->variable.v.entity;
3890 type_t *type = entity->declaration.type;
3891 create_local_initializer(initializer, dbgi, irentity, type);
3894 static void create_variable_initializer(entity_t *entity)
3896 assert(entity->kind == ENTITY_VARIABLE);
3897 initializer_t *initializer = entity->variable.initializer;
3898 if (initializer == NULL)
3901 declaration_kind_t declaration_kind
3902 = (declaration_kind_t) entity->declaration.kind;
3903 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3904 create_initializer_local_variable_entity(entity);
3908 type_t *type = entity->declaration.type;
3909 type_qualifiers_t tq = get_type_qualifier(type, true);
3911 if (initializer->kind == INITIALIZER_VALUE) {
3912 initializer_value_t *initializer_value = &initializer->value;
3913 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3915 ir_node *value = expression_to_firm(initializer_value->value);
3916 value = do_strict_conv(dbgi, value);
3918 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3919 set_value(entity->variable.v.value_number, value);
3921 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3923 ir_entity *irentity = entity->variable.v.entity;
3925 if (tq & TYPE_QUALIFIER_CONST) {
3926 set_entity_variability(irentity, variability_constant);
3928 set_entity_variability(irentity, variability_initialized);
3930 set_atomic_ent_value(irentity, value);
3933 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3934 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3936 ir_entity *irentity = entity->variable.v.entity;
3937 ir_initializer_t *irinitializer
3938 = create_ir_initializer(initializer, type);
3940 if (tq & TYPE_QUALIFIER_CONST) {
3941 set_entity_variability(irentity, variability_constant);
3943 set_entity_variability(irentity, variability_initialized);
3945 set_entity_initializer(irentity, irinitializer);
3949 static void create_variable_length_array(entity_t *entity)
3951 assert(entity->kind == ENTITY_VARIABLE);
3952 assert(entity->variable.initializer == NULL);
3954 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3955 entity->variable.v.vla_base = NULL;
3957 /* TODO: record VLA somewhere so we create the free node when we leave
3961 static void allocate_variable_length_array(entity_t *entity)
3963 assert(entity->kind == ENTITY_VARIABLE);
3964 assert(entity->variable.initializer == NULL);
3965 assert(get_cur_block() != NULL);
3967 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3968 type_t *type = entity->declaration.type;
3969 ir_type *el_type = get_ir_type(type->array.element_type);
3971 /* make sure size_node is calculated */
3972 get_type_size(type);
3973 ir_node *elems = type->array.size_node;
3974 ir_node *mem = get_store();
3975 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3977 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3978 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3981 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3982 entity->variable.v.vla_base = addr;
3986 * Creates a Firm local variable from a declaration.
3988 static void create_local_variable(entity_t *entity)
3990 assert(entity->kind == ENTITY_VARIABLE);
3991 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
3993 bool needs_entity = entity->variable.address_taken;
3994 type_t *type = skip_typeref(entity->declaration.type);
3996 /* is it a variable length array? */
3997 if (is_type_array(type) && !type->array.size_constant) {
3998 create_variable_length_array(entity);
4000 } else if (is_type_array(type) || is_type_compound(type)) {
4001 needs_entity = true;
4002 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4003 needs_entity = true;
4007 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4008 create_variable_entity(entity,
4009 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4012 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4013 entity->variable.v.value_number = next_value_number_function;
4014 set_irg_loc_description(current_ir_graph, next_value_number_function,
4015 (variable_t*) &entity->variable);
4016 ++next_value_number_function;
4020 static void create_local_static_variable(entity_t *entity)
4022 assert(entity->kind == ENTITY_VARIABLE);
4023 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4025 type_t *const type = skip_typeref(entity->declaration.type);
4026 ir_type *const global_type = get_glob_type();
4027 ir_type *const irtype = get_ir_type(type);
4028 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4030 size_t l = strlen(entity->base.symbol->string);
4031 char buf[l + sizeof(".%u")];
4032 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4033 ident *const id = id_unique(buf);
4035 ir_entity *const irentity = new_d_entity(global_type, id, irtype, dbgi);
4037 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4038 set_entity_volatility(irentity, volatility_is_volatile);
4041 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4042 entity->variable.v.entity = irentity;
4043 set_entity_ld_ident(irentity, id);
4044 set_entity_variability(irentity, variability_uninitialized);
4045 set_entity_visibility(irentity, visibility_local);
4046 set_entity_allocation(irentity, allocation_static);
4048 ir_graph *const old_current_ir_graph = current_ir_graph;
4049 current_ir_graph = get_const_code_irg();
4051 create_variable_initializer(entity);
4053 assert(current_ir_graph == get_const_code_irg());
4054 current_ir_graph = old_current_ir_graph;
4059 static void return_statement_to_firm(return_statement_t *statement)
4061 if (get_cur_block() == NULL)
4064 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4065 type_t *type = current_function_entity->declaration.type;
4066 ir_type *func_irtype = get_ir_type(type);
4071 if (get_method_n_ress(func_irtype) > 0) {
4072 ir_type *res_type = get_method_res_type(func_irtype, 0);
4074 if (statement->value != NULL) {
4075 ir_node *node = expression_to_firm(statement->value);
4076 node = do_strict_conv(dbgi, node);
4080 if (is_compound_type(res_type)) {
4083 mode = get_type_mode(res_type);
4085 in[0] = new_Unknown(mode);
4089 /* build return_value for its side effects */
4090 if (statement->value != NULL) {
4091 expression_to_firm(statement->value);
4096 ir_node *store = get_store();
4097 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4099 ir_node *end_block = get_irg_end_block(current_ir_graph);
4100 add_immBlock_pred(end_block, ret);
4102 set_cur_block(NULL);
4105 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4107 if (get_cur_block() == NULL)
4110 return expression_to_firm(statement->expression);
4113 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4115 entity_t *entity = compound->scope.entities;
4116 for ( ; entity != NULL; entity = entity->base.next) {
4117 if (!is_declaration(entity))
4120 create_local_declaration(entity);
4123 ir_node *result = NULL;
4124 statement_t *statement = compound->statements;
4125 for ( ; statement != NULL; statement = statement->base.next) {
4126 if (statement->base.next == NULL
4127 && statement->kind == STATEMENT_EXPRESSION) {
4128 result = expression_statement_to_firm(
4129 &statement->expression);
4132 statement_to_firm(statement);
4138 static void create_global_variable(entity_t *entity)
4140 assert(entity->kind == ENTITY_VARIABLE);
4144 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4145 case STORAGE_CLASS_STATIC:
4146 vis = visibility_local;
4149 case STORAGE_CLASS_EXTERN:
4150 vis = visibility_external_allocated;
4153 case STORAGE_CLASS_NONE:
4154 vis = visibility_external_visible;
4157 case STORAGE_CLASS_THREAD:
4158 vis = visibility_external_visible;
4161 case STORAGE_CLASS_THREAD_EXTERN:
4162 vis = visibility_external_allocated;
4165 case STORAGE_CLASS_THREAD_STATIC:
4166 vis = visibility_local;
4170 var_type = get_tls_type();
4174 var_type = get_glob_type();
4178 create_variable_entity(entity,
4179 DECLARATION_KIND_GLOBAL_VARIABLE,
4181 /* Matze: I'm confused, shouldn't we only be here when creating
4184 if (!is_type_function(skip_typeref(entity->declaration.type))) {
4185 set_entity_visibility(declaration->v.entity, vis);
4188 set_entity_visibility(entity->variable.v.entity, vis);
4193 case STORAGE_CLASS_TYPEDEF:
4194 case STORAGE_CLASS_AUTO:
4195 case STORAGE_CLASS_REGISTER:
4198 panic("Invalid storage class for global variable");
4201 static void create_local_declaration(entity_t *entity)
4203 assert(is_declaration(entity));
4205 /* construct type */
4206 (void) get_ir_type(entity->declaration.type);
4207 if (entity->base.symbol == NULL) {
4211 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4212 case STORAGE_CLASS_STATIC:
4213 create_local_static_variable(entity);
4215 case STORAGE_CLASS_EXTERN:
4216 if (entity->kind == ENTITY_FUNCTION) {
4217 assert(entity->function.statement == NULL);
4218 get_function_entity(entity);
4220 create_global_variable(entity);
4221 create_variable_initializer(entity);
4224 case STORAGE_CLASS_NONE:
4225 case STORAGE_CLASS_AUTO:
4226 case STORAGE_CLASS_REGISTER:
4227 if (entity->kind == ENTITY_FUNCTION) {
4228 if (entity->function.statement != NULL) {
4229 get_function_entity(entity);
4230 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4231 enqueue_inner_function(entity);
4233 get_function_entity(entity);
4236 create_local_variable(entity);
4239 case STORAGE_CLASS_TYPEDEF:
4240 case STORAGE_CLASS_THREAD:
4241 case STORAGE_CLASS_THREAD_EXTERN:
4242 case STORAGE_CLASS_THREAD_STATIC:
4245 panic("invalid storage class found");
4248 static void initialize_local_declaration(entity_t *entity)
4250 if (entity->base.symbol == NULL)
4253 switch ((declaration_kind_t) entity->declaration.kind) {
4254 case DECLARATION_KIND_LOCAL_VARIABLE:
4255 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4256 create_variable_initializer(entity);
4259 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4260 allocate_variable_length_array(entity);
4263 case DECLARATION_KIND_COMPOUND_MEMBER:
4264 case DECLARATION_KIND_GLOBAL_VARIABLE:
4265 case DECLARATION_KIND_FUNCTION:
4266 case DECLARATION_KIND_INNER_FUNCTION:
4269 case DECLARATION_KIND_UNKNOWN:
4270 panic("can't initialize unknown declaration");
4272 panic("invalid declaration kind");
4275 static void declaration_statement_to_firm(declaration_statement_t *statement)
4277 entity_t *entity = statement->declarations_begin;
4278 entity_t *end = statement->declarations_end->base.next;
4279 for ( ; entity != end; entity = entity->base.next) {
4280 if (!is_declaration(entity))
4282 initialize_local_declaration(entity);
4286 static void if_statement_to_firm(if_statement_t *statement)
4288 ir_node *cur_block = get_cur_block();
4290 ir_node *fallthrough_block = NULL;
4292 /* the true (blocks) */
4293 ir_node *true_block = NULL;
4294 if (statement->true_statement != NULL) {
4295 true_block = new_immBlock();
4296 statement_to_firm(statement->true_statement);
4297 if (get_cur_block() != NULL) {
4298 ir_node *jmp = new_Jmp();
4299 if (fallthrough_block == NULL)
4300 fallthrough_block = new_immBlock();
4301 add_immBlock_pred(fallthrough_block, jmp);
4305 /* the false (blocks) */
4306 ir_node *false_block = NULL;
4307 if (statement->false_statement != NULL) {
4308 false_block = new_immBlock();
4310 statement_to_firm(statement->false_statement);
4311 if (get_cur_block() != NULL) {
4312 ir_node *jmp = new_Jmp();
4313 if (fallthrough_block == NULL)
4314 fallthrough_block = new_immBlock();
4315 add_immBlock_pred(fallthrough_block, jmp);
4319 /* create the condition */
4320 if (cur_block != NULL) {
4321 if (true_block == NULL || false_block == NULL) {
4322 if (fallthrough_block == NULL)
4323 fallthrough_block = new_immBlock();
4324 if (true_block == NULL)
4325 true_block = fallthrough_block;
4326 if (false_block == NULL)
4327 false_block = fallthrough_block;
4330 set_cur_block(cur_block);
4331 create_condition_evaluation(statement->condition, true_block,
4335 mature_immBlock(true_block);
4336 if (false_block != fallthrough_block && false_block != NULL) {
4337 mature_immBlock(false_block);
4339 if (fallthrough_block != NULL) {
4340 mature_immBlock(fallthrough_block);
4343 set_cur_block(fallthrough_block);
4346 static void while_statement_to_firm(while_statement_t *statement)
4348 ir_node *jmp = NULL;
4349 if (get_cur_block() != NULL) {
4353 /* create the header block */
4354 ir_node *header_block = new_immBlock();
4356 add_immBlock_pred(header_block, jmp);
4360 ir_node *old_continue_label = continue_label;
4361 ir_node *old_break_label = break_label;
4362 continue_label = header_block;
4365 ir_node *body_block = new_immBlock();
4366 statement_to_firm(statement->body);
4367 ir_node *false_block = break_label;
4369 assert(continue_label == header_block);
4370 continue_label = old_continue_label;
4371 break_label = old_break_label;
4373 if (get_cur_block() != NULL) {
4375 add_immBlock_pred(header_block, jmp);
4378 /* shortcut for while(true) */
4379 if (is_constant_expression(statement->condition)
4380 && fold_constant(statement->condition) != 0) {
4381 set_cur_block(header_block);
4382 ir_node *header_jmp = new_Jmp();
4383 add_immBlock_pred(body_block, header_jmp);
4385 keep_alive(body_block);
4386 keep_all_memory(body_block);
4387 set_cur_block(body_block);
4389 if (false_block == NULL) {
4390 false_block = new_immBlock();
4393 /* create the condition */
4394 set_cur_block(header_block);
4396 create_condition_evaluation(statement->condition, body_block,
4400 mature_immBlock(body_block);
4401 mature_immBlock(header_block);
4402 if (false_block != NULL) {
4403 mature_immBlock(false_block);
4406 set_cur_block(false_block);
4409 static void do_while_statement_to_firm(do_while_statement_t *statement)
4411 ir_node *jmp = NULL;
4412 if (get_cur_block() != NULL) {
4416 /* create the header block */
4417 ir_node *header_block = new_immBlock();
4420 ir_node *body_block = new_immBlock();
4422 add_immBlock_pred(body_block, jmp);
4425 ir_node *old_continue_label = continue_label;
4426 ir_node *old_break_label = break_label;
4427 continue_label = header_block;
4430 statement_to_firm(statement->body);
4431 ir_node *false_block = break_label;
4433 assert(continue_label == header_block);
4434 continue_label = old_continue_label;
4435 break_label = old_break_label;
4437 if (get_cur_block() != NULL) {
4438 ir_node *body_jmp = new_Jmp();
4439 add_immBlock_pred(header_block, body_jmp);
4440 mature_immBlock(header_block);
4443 if (false_block == NULL) {
4444 false_block = new_immBlock();
4447 /* create the condition */
4448 set_cur_block(header_block);
4450 create_condition_evaluation(statement->condition, body_block, false_block);
4451 mature_immBlock(body_block);
4452 mature_immBlock(header_block);
4453 if (false_block != NULL) {
4454 mature_immBlock(false_block);
4457 set_cur_block(false_block);
4460 static void for_statement_to_firm(for_statement_t *statement)
4462 ir_node *jmp = NULL;
4464 /* create declarations */
4465 entity_t *entity = statement->scope.entities;
4466 for ( ; entity != NULL; entity = entity->base.next) {
4467 if (!is_declaration(entity))
4470 create_local_declaration(entity);
4473 if (get_cur_block() != NULL) {
4474 entity = statement->scope.entities;
4475 for ( ; entity != NULL; entity = entity->base.next) {
4476 if (!is_declaration(entity))
4479 initialize_local_declaration(entity);
4482 if (statement->initialisation != NULL) {
4483 expression_to_firm(statement->initialisation);
4490 /* create the step block */
4491 ir_node *const step_block = new_immBlock();
4492 if (statement->step != NULL) {
4493 expression_to_firm(statement->step);
4495 ir_node *const step_jmp = new_Jmp();
4497 /* create the header block */
4498 ir_node *const header_block = new_immBlock();
4500 add_immBlock_pred(header_block, jmp);
4502 add_immBlock_pred(header_block, step_jmp);
4504 /* the false block */
4505 ir_node *const false_block = new_immBlock();
4508 ir_node * body_block;
4509 if (statement->body != NULL) {
4510 ir_node *const old_continue_label = continue_label;
4511 ir_node *const old_break_label = break_label;
4512 continue_label = step_block;
4513 break_label = false_block;
4515 body_block = new_immBlock();
4516 statement_to_firm(statement->body);
4518 assert(continue_label == step_block);
4519 assert(break_label == false_block);
4520 continue_label = old_continue_label;
4521 break_label = old_break_label;
4523 if (get_cur_block() != NULL) {
4525 add_immBlock_pred(step_block, jmp);
4528 body_block = step_block;
4531 /* create the condition */
4532 set_cur_block(header_block);
4533 if (statement->condition != NULL) {
4534 create_condition_evaluation(statement->condition, body_block,
4537 keep_alive(header_block);
4538 keep_all_memory(header_block);
4540 add_immBlock_pred(body_block, jmp);
4543 mature_immBlock(body_block);
4544 mature_immBlock(false_block);
4545 mature_immBlock(step_block);
4546 mature_immBlock(header_block);
4547 mature_immBlock(false_block);
4549 set_cur_block(false_block);
4552 static void create_jump_statement(const statement_t *statement,
4553 ir_node *target_block)
4555 if (get_cur_block() == NULL)
4558 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4559 ir_node *jump = new_d_Jmp(dbgi);
4560 add_immBlock_pred(target_block, jump);
4562 set_cur_block(NULL);
4565 static ir_node *get_break_label(void)
4567 if (break_label == NULL) {
4568 ir_node *cur_block = get_cur_block();
4569 break_label = new_immBlock();
4570 set_cur_block(cur_block);
4575 static void switch_statement_to_firm(switch_statement_t *statement)
4577 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4579 ir_node *expression = expression_to_firm(statement->expression);
4580 ir_node *cond = new_d_Cond(dbgi, expression);
4582 set_cur_block(NULL);
4584 ir_node *const old_switch_cond = current_switch_cond;
4585 ir_node *const old_break_label = break_label;
4586 const bool old_saw_default_label = saw_default_label;
4587 saw_default_label = false;
4588 current_switch_cond = cond;
4590 switch_statement_t *const old_switch = current_switch;
4591 current_switch = statement;
4593 /* determine a free number for the default label */
4594 unsigned long num_cases = 0;
4596 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4597 if (l->expression == NULL) {
4601 if (l->last_case >= l->first_case)
4602 num_cases += l->last_case - l->first_case + 1;
4603 if (l->last_case > def_nr)
4604 def_nr = l->last_case;
4607 if (def_nr == INT_MAX) {
4608 /* Bad: an overflow will occurr, we cannot be sure that the
4609 * maximum + 1 is a free number. Scan the values a second
4610 * time to find a free number.
4612 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4614 memset(bits, 0, (num_cases + 7) >> 3);
4615 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4616 if (l->expression == NULL) {
4620 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4621 if (start < num_cases && l->last_case >= 0) {
4622 unsigned long end = (unsigned long)l->last_case < num_cases ?
4623 (unsigned long)l->last_case : num_cases - 1;
4624 for (unsigned long cns = start; cns <= end; ++cns) {
4625 bits[cns >> 3] |= (1 << (cns & 7));
4629 /* We look at the first num_cases constants:
4630 * Either they are densed, so we took the last (num_cases)
4631 * one, or they are non densed, so we will find one free
4635 for (i = 0; i < num_cases; ++i)
4636 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4644 statement->default_proj_nr = def_nr;
4646 if (statement->body != NULL) {
4647 statement_to_firm(statement->body);
4650 if (get_cur_block() != NULL) {
4651 ir_node *jmp = new_Jmp();
4652 add_immBlock_pred(get_break_label(), jmp);
4655 if (!saw_default_label) {
4656 set_cur_block(get_nodes_block(cond));
4657 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4658 statement->default_proj_nr);
4659 add_immBlock_pred(get_break_label(), proj);
4662 if (break_label != NULL) {
4663 mature_immBlock(break_label);
4665 set_cur_block(break_label);
4667 assert(current_switch_cond == cond);
4668 current_switch = old_switch;
4669 current_switch_cond = old_switch_cond;
4670 break_label = old_break_label;
4671 saw_default_label = old_saw_default_label;
4674 static void case_label_to_firm(const case_label_statement_t *statement)
4676 if (statement->is_empty_range)
4679 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4681 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4684 ir_node *old_block = get_nodes_block(current_switch_cond);
4685 ir_node *block = new_immBlock();
4687 set_cur_block(old_block);
4688 if (statement->expression != NULL) {
4689 long pn = statement->first_case;
4690 long end_pn = statement->last_case;
4691 assert(pn <= end_pn);
4692 /* create jumps for all cases in the given range */
4694 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4695 add_immBlock_pred(block, proj);
4696 } while(pn++ < end_pn);
4698 saw_default_label = true;
4699 proj = new_d_defaultProj(dbgi, current_switch_cond,
4700 current_switch->default_proj_nr);
4702 add_immBlock_pred(block, proj);
4705 if (fallthrough != NULL) {
4706 add_immBlock_pred(block, fallthrough);
4708 mature_immBlock(block);
4709 set_cur_block(block);
4711 if (statement->statement != NULL) {
4712 statement_to_firm(statement->statement);
4716 static void label_to_firm(const label_statement_t *statement)
4718 ir_node *block = get_label_block(statement->label);
4720 if (get_cur_block() != NULL) {
4721 ir_node *jmp = new_Jmp();
4722 add_immBlock_pred(block, jmp);
4725 set_cur_block(block);
4727 keep_all_memory(block);
4729 if (statement->statement != NULL) {
4730 statement_to_firm(statement->statement);
4734 static void goto_to_firm(const goto_statement_t *statement)
4736 if (get_cur_block() == NULL)
4739 if (statement->expression) {
4740 ir_node *irn = expression_to_firm(statement->expression);
4741 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4742 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4744 set_irn_link(ijmp, ijmp_list);
4747 ir_node *block = get_label_block(statement->label);
4748 ir_node *jmp = new_Jmp();
4749 add_immBlock_pred(block, jmp);
4751 set_cur_block(NULL);
4754 static void asm_statement_to_firm(const asm_statement_t *statement)
4756 bool needs_memory = false;
4758 if (statement->is_volatile) {
4759 needs_memory = true;
4762 size_t n_clobbers = 0;
4763 asm_clobber_t *clobber = statement->clobbers;
4764 for ( ; clobber != NULL; clobber = clobber->next) {
4765 const char *clobber_str = clobber->clobber.begin;
4767 if (!be_is_valid_clobber(clobber_str)) {
4768 errorf(&statement->base.source_position,
4769 "invalid clobber '%s' specified", clobber->clobber);
4773 if (strcmp(clobber_str, "memory") == 0) {
4774 needs_memory = true;
4778 ident *id = new_id_from_str(clobber_str);
4779 obstack_ptr_grow(&asm_obst, id);
4782 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4783 ident **clobbers = NULL;
4784 if (n_clobbers > 0) {
4785 clobbers = obstack_finish(&asm_obst);
4788 size_t n_inputs = 0;
4789 asm_argument_t *argument = statement->inputs;
4790 for ( ; argument != NULL; argument = argument->next)
4792 size_t n_outputs = 0;
4793 argument = statement->outputs;
4794 for ( ; argument != NULL; argument = argument->next)
4797 unsigned next_pos = 0;
4799 ir_node *ins[n_inputs + n_outputs + 1];
4802 ir_asm_constraint tmp_in_constraints[n_outputs];
4804 const expression_t *out_exprs[n_outputs];
4805 ir_node *out_addrs[n_outputs];
4806 size_t out_size = 0;
4808 argument = statement->outputs;
4809 for ( ; argument != NULL; argument = argument->next) {
4810 const char *constraints = argument->constraints.begin;
4811 asm_constraint_flags_t asm_flags
4812 = be_parse_asm_constraints(constraints);
4814 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4815 errorf(&statement->base.source_position,
4816 "some constraints in '%s' are not supported", constraints);
4819 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4820 errorf(&statement->base.source_position,
4821 "some constraints in '%s' are invalid", constraints);
4824 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4825 errorf(&statement->base.source_position,
4826 "no write flag specified for output constraints '%s'",
4831 unsigned pos = next_pos++;
4832 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4833 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4834 expression_t *expr = argument->expression;
4835 ir_node *addr = expression_to_addr(expr);
4836 /* in+output, construct an artifical same_as constraint on the
4838 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4840 ir_node *value = get_value_from_lvalue(expr, addr);
4842 snprintf(buf, sizeof(buf), "%u", pos);
4844 ir_asm_constraint constraint;
4845 constraint.pos = pos;
4846 constraint.constraint = new_id_from_str(buf);
4847 constraint.mode = get_ir_mode(expr->base.type);
4848 tmp_in_constraints[in_size] = constraint;
4849 ins[in_size] = value;
4854 out_exprs[out_size] = expr;
4855 out_addrs[out_size] = addr;
4857 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4858 /* pure memory ops need no input (but we have to make sure we
4859 * attach to the memory) */
4860 assert(! (asm_flags &
4861 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4862 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4863 needs_memory = true;
4865 /* we need to attach the address to the inputs */
4866 expression_t *expr = argument->expression;
4868 ir_asm_constraint constraint;
4869 constraint.pos = pos;
4870 constraint.constraint = new_id_from_str(constraints);
4871 constraint.mode = NULL;
4872 tmp_in_constraints[in_size] = constraint;
4874 ins[in_size] = expression_to_addr(expr);
4878 errorf(&statement->base.source_position,
4879 "only modifiers but no place set in constraints '%s'",
4884 ir_asm_constraint constraint;
4885 constraint.pos = pos;
4886 constraint.constraint = new_id_from_str(constraints);
4887 constraint.mode = get_ir_mode(argument->expression->base.type);
4889 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4891 assert(obstack_object_size(&asm_obst)
4892 == out_size * sizeof(ir_asm_constraint));
4893 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4896 obstack_grow(&asm_obst, tmp_in_constraints,
4897 in_size * sizeof(tmp_in_constraints[0]));
4898 /* find and count input and output arguments */
4899 argument = statement->inputs;
4900 for ( ; argument != NULL; argument = argument->next) {
4901 const char *constraints = argument->constraints.begin;
4902 asm_constraint_flags_t asm_flags
4903 = be_parse_asm_constraints(constraints);
4905 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4906 errorf(&statement->base.source_position,
4907 "some constraints in '%s' are not supported", constraints);
4910 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4911 errorf(&statement->base.source_position,
4912 "some constraints in '%s' are invalid", constraints);
4915 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4916 errorf(&statement->base.source_position,
4917 "write flag specified for input constraints '%s'",
4923 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4924 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4925 /* we can treat this as "normal" input */
4926 input = expression_to_firm(argument->expression);
4927 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4928 /* pure memory ops need no input (but we have to make sure we
4929 * attach to the memory) */
4930 assert(! (asm_flags &
4931 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4932 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4933 needs_memory = true;
4934 input = expression_to_addr(argument->expression);
4936 errorf(&statement->base.source_position,
4937 "only modifiers but no place set in constraints '%s'",
4942 ir_asm_constraint constraint;
4943 constraint.pos = next_pos++;
4944 constraint.constraint = new_id_from_str(constraints);
4945 constraint.mode = get_irn_mode(input);
4947 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4948 ins[in_size++] = input;
4952 ir_asm_constraint constraint;
4953 constraint.pos = next_pos++;
4954 constraint.constraint = new_id_from_str("");
4955 constraint.mode = mode_M;
4957 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4958 ins[in_size++] = get_store();
4961 assert(obstack_object_size(&asm_obst)
4962 == in_size * sizeof(ir_asm_constraint));
4963 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4965 /* create asm node */
4966 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4968 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4970 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4971 out_size, output_constraints,
4972 n_clobbers, clobbers, asm_text);
4974 if (statement->is_volatile) {
4975 set_irn_pinned(node, op_pin_state_pinned);
4977 set_irn_pinned(node, op_pin_state_floats);
4980 /* create output projs & connect them */
4982 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4987 for (i = 0; i < out_size; ++i) {
4988 const expression_t *out_expr = out_exprs[i];
4990 ir_mode *mode = get_ir_mode(out_expr->base.type);
4991 ir_node *proj = new_Proj(node, mode, pn);
4992 ir_node *addr = out_addrs[i];
4994 set_value_for_expression_addr(out_expr, proj, addr);
4998 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4999 statement_to_firm(statement->try_statement);
5000 warningf(&statement->base.source_position, "structured exception handling ignored");
5003 static void leave_statement_to_firm(leave_statement_t *statement) {
5004 errorf(&statement->base.source_position, "__leave not supported yet");
5008 * Transform a statement.
5010 static void statement_to_firm(statement_t *statement)
5013 assert(!statement->base.transformed);
5014 statement->base.transformed = true;
5017 switch (statement->kind) {
5018 case STATEMENT_INVALID:
5019 panic("invalid statement found");
5021 case STATEMENT_EMPTY:
5024 case STATEMENT_COMPOUND:
5025 compound_statement_to_firm(&statement->compound);
5027 case STATEMENT_RETURN:
5028 return_statement_to_firm(&statement->returns);
5030 case STATEMENT_EXPRESSION:
5031 expression_statement_to_firm(&statement->expression);
5034 if_statement_to_firm(&statement->ifs);
5036 case STATEMENT_WHILE:
5037 while_statement_to_firm(&statement->whiles);
5039 case STATEMENT_DO_WHILE:
5040 do_while_statement_to_firm(&statement->do_while);
5042 case STATEMENT_DECLARATION:
5043 declaration_statement_to_firm(&statement->declaration);
5045 case STATEMENT_BREAK:
5046 create_jump_statement(statement, get_break_label());
5048 case STATEMENT_CONTINUE:
5049 create_jump_statement(statement, continue_label);
5051 case STATEMENT_SWITCH:
5052 switch_statement_to_firm(&statement->switchs);
5054 case STATEMENT_CASE_LABEL:
5055 case_label_to_firm(&statement->case_label);
5058 for_statement_to_firm(&statement->fors);
5060 case STATEMENT_LABEL:
5061 label_to_firm(&statement->label);
5063 case STATEMENT_LOCAL_LABEL:
5064 /* local labels transform the semantics of labels while parsing
5065 * they don't need any special treatment here */
5067 case STATEMENT_GOTO:
5068 goto_to_firm(&statement->gotos);
5071 asm_statement_to_firm(&statement->asms);
5073 case STATEMENT_MS_TRY:
5074 ms_try_statement_to_firm(&statement->ms_try);
5076 case STATEMENT_LEAVE:
5077 leave_statement_to_firm(&statement->leave);
5080 panic("Statement not implemented\n");
5083 static int count_local_variables(const entity_t *entity,
5084 const entity_t *const end)
5087 for (; entity != end; entity = entity->base.next) {
5088 if (entity->kind != ENTITY_VARIABLE)
5090 type_t *type = skip_typeref(entity->declaration.type);
5092 if (!entity->variable.address_taken && is_type_scalar(type))
5098 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5100 int *const count = env;
5102 switch (stmt->kind) {
5103 case STATEMENT_DECLARATION: {
5104 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5105 *count += count_local_variables(decl_stmt->declarations_begin,
5106 decl_stmt->declarations_end->base.next);
5111 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5119 static int get_function_n_local_vars(entity_t *entity)
5123 /* count parameters */
5124 count += count_local_variables(entity->function.parameters.entities, NULL);
5126 /* count local variables declared in body */
5127 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5132 static void initialize_function_parameters(entity_t *entity)
5134 assert(entity->kind == ENTITY_FUNCTION);
5135 ir_graph *irg = current_ir_graph;
5136 ir_node *args = get_irg_args(irg);
5137 ir_node *start_block = get_irg_start_block(irg);
5138 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5141 entity_t *parameter = entity->function.parameters.entities;
5142 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5143 assert(parameter->kind == ENTITY_VARIABLE);
5144 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5145 type_t *type = skip_typeref(parameter->declaration.type);
5147 bool needs_entity = parameter->variable.address_taken;
5148 assert(!is_type_array(type));
5149 if (is_type_compound(type)) {
5150 needs_entity = true;
5154 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5155 ident *id = new_id_from_str(parameter->base.symbol->string);
5156 set_entity_ident(entity, id);
5158 parameter->declaration.kind
5159 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5160 parameter->variable.v.entity = entity;
5164 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5165 ir_mode *param_mode = get_type_mode(param_irtype);
5168 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5170 ir_mode *mode = get_ir_mode(type);
5171 value = create_conv(NULL, value, mode);
5172 value = do_strict_conv(NULL, value);
5174 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5175 parameter->variable.v.value_number = next_value_number_function;
5176 set_irg_loc_description(current_ir_graph, next_value_number_function,
5177 (variable_t*) ¶meter->variable);
5178 ++next_value_number_function;
5180 set_value(parameter->variable.v.value_number, value);
5185 * Handle additional decl modifiers for IR-graphs
5187 * @param irg the IR-graph
5188 * @param dec_modifiers additional modifiers
5190 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5192 if (decl_modifiers & DM_NORETURN) {
5193 /* TRUE if the declaration includes the Microsoft
5194 __declspec(noreturn) specifier. */
5195 set_irg_additional_property(irg, mtp_property_noreturn);
5197 if (decl_modifiers & DM_NOTHROW) {
5198 /* TRUE if the declaration includes the Microsoft
5199 __declspec(nothrow) specifier. */
5200 set_irg_additional_property(irg, mtp_property_nothrow);
5202 if (decl_modifiers & DM_NAKED) {
5203 /* TRUE if the declaration includes the Microsoft
5204 __declspec(naked) specifier. */
5205 set_irg_additional_property(irg, mtp_property_naked);
5207 if (decl_modifiers & DM_FORCEINLINE) {
5208 /* TRUE if the declaration includes the
5209 Microsoft __forceinline specifier. */
5210 set_irg_inline_property(irg, irg_inline_forced);
5212 if (decl_modifiers & DM_NOINLINE) {
5213 /* TRUE if the declaration includes the Microsoft
5214 __declspec(noinline) specifier. */
5215 set_irg_inline_property(irg, irg_inline_forbidden);
5219 static void add_function_pointer(ir_type *segment, ir_entity *method,
5220 const char *unique_template)
5222 ir_type *method_type = get_entity_type(method);
5223 ident *id = id_unique(unique_template);
5224 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5226 ident *ide = id_unique(unique_template);
5227 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5228 ir_graph *irg = get_const_code_irg();
5229 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5232 set_entity_compiler_generated(ptr, 1);
5233 set_entity_variability(ptr, variability_constant);
5234 set_atomic_ent_value(ptr, val);
5238 * Generate possible IJmp branches to a given label block.
5240 static void gen_ijmp_branches(ir_node *block) {
5242 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5243 add_immBlock_pred(block, ijmp);
5248 * Create code for a function.
5250 static void create_function(entity_t *entity)
5252 assert(entity->kind == ENTITY_FUNCTION);
5253 ir_entity *function_entity = get_function_entity(entity);
5255 if (entity->function.statement == NULL)
5258 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5259 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5260 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5262 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5263 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5264 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5267 current_function_entity = entity;
5268 current_function_name = NULL;
5269 current_funcsig = NULL;
5271 assert(all_labels == NULL);
5272 all_labels = NEW_ARR_F(label_t *, 0);
5275 int n_local_vars = get_function_n_local_vars(entity);
5276 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5278 ir_graph *old_current_function = current_function;
5279 current_function = irg;
5281 set_irg_fp_model(irg, firm_opt.fp_model);
5282 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5283 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5285 ir_node *first_block = get_cur_block();
5287 /* set inline flags */
5288 if (entity->function.is_inline)
5289 set_irg_inline_property(irg, irg_inline_recomended);
5290 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5292 next_value_number_function = 0;
5293 initialize_function_parameters(entity);
5295 statement_to_firm(entity->function.statement);
5297 ir_node *end_block = get_irg_end_block(irg);
5299 /* do we have a return statement yet? */
5300 if (get_cur_block() != NULL) {
5301 type_t *type = skip_typeref(entity->declaration.type);
5302 assert(is_type_function(type));
5303 const function_type_t *func_type = &type->function;
5304 const type_t *return_type
5305 = skip_typeref(func_type->return_type);
5308 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5309 ret = new_Return(get_store(), 0, NULL);
5312 if (is_type_scalar(return_type)) {
5313 mode = get_ir_mode(func_type->return_type);
5319 /* ยง5.1.2.2.3 main implicitly returns 0 */
5320 if (is_main(entity)) {
5321 in[0] = new_Const(mode, get_mode_null(mode));
5323 in[0] = new_Unknown(mode);
5325 ret = new_Return(get_store(), 1, in);
5327 add_immBlock_pred(end_block, ret);
5330 bool has_computed_gotos = false;
5331 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5332 label_t *label = all_labels[i];
5333 if (label->address_taken) {
5334 gen_ijmp_branches(label->block);
5335 has_computed_gotos = true;
5337 mature_immBlock(label->block);
5339 if (has_computed_gotos) {
5340 /* if we have computed goto's in the function, we cannot inline it */
5341 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5342 warningf(&entity->base.source_position,
5343 "function '%Y' can never be inlined because it contains a computed goto",
5344 entity->base.symbol);
5346 set_irg_inline_property(irg, irg_inline_forbidden);
5349 DEL_ARR_F(all_labels);
5352 mature_immBlock(first_block);
5353 mature_immBlock(end_block);
5355 irg_finalize_cons(irg);
5357 /* finalize the frame type */
5358 ir_type *frame_type = get_irg_frame_type(irg);
5359 int n = get_compound_n_members(frame_type);
5362 for (int i = 0; i < n; ++i) {
5363 ir_entity *entity = get_compound_member(frame_type, i);
5364 ir_type *entity_type = get_entity_type(entity);
5366 int align = get_type_alignment_bytes(entity_type);
5367 if (align > align_all)
5371 misalign = offset % align;
5373 offset += align - misalign;
5377 set_entity_offset(entity, offset);
5378 offset += get_type_size_bytes(entity_type);
5380 set_type_size_bytes(frame_type, offset);
5381 set_type_alignment_bytes(frame_type, align_all);
5384 current_function = old_current_function;
5386 /* create inner functions */
5388 for (inner = next_inner_function(); inner != NULL;
5389 inner = next_inner_function()) {
5390 create_function(inner);
5394 static void scope_to_firm(scope_t *scope)
5396 /* first pass: create declarations */
5397 entity_t *entity = scope->entities;
5398 for ( ; entity != NULL; entity = entity->base.next) {
5399 if (entity->base.symbol == NULL)
5402 if (entity->kind == ENTITY_FUNCTION) {
5403 get_function_entity(entity);
5404 } else if (entity->kind == ENTITY_VARIABLE) {
5405 create_global_variable(entity);
5409 /* second pass: create code/initializers */
5410 entity = scope->entities;
5411 for ( ; entity != NULL; entity = entity->base.next) {
5412 if (entity->base.symbol == NULL)
5415 if (entity->kind == ENTITY_FUNCTION) {
5416 create_function(entity);
5417 } else if (entity->kind == ENTITY_VARIABLE) {
5418 assert(entity->declaration.kind
5419 == DECLARATION_KIND_GLOBAL_VARIABLE);
5420 current_ir_graph = get_const_code_irg();
5421 create_variable_initializer(entity);
5426 void init_ast2firm(void)
5428 obstack_init(&asm_obst);
5429 init_atomic_modes();
5431 /* OS option must be set to the backend */
5432 switch (firm_opt.os_support) {
5433 case OS_SUPPORT_MINGW:
5434 create_ld_ident = create_name_win32;
5436 case OS_SUPPORT_LINUX:
5437 create_ld_ident = create_name_linux_elf;
5439 case OS_SUPPORT_MACHO:
5440 create_ld_ident = create_name_macho;
5443 panic("unexpected OS support mode");
5446 /* create idents for all known runtime functions */
5447 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5448 rts_idents[i] = new_id_from_str(rts_data[i].name);
5451 sym_C = symbol_table_insert("C");
5453 entitymap_init(&entitymap);
5456 static void init_ir_types(void)
5458 static int ir_types_initialized = 0;
5459 if (ir_types_initialized)
5461 ir_types_initialized = 1;
5463 ir_type_int = get_ir_type(type_int);
5464 ir_type_const_char = get_ir_type(type_const_char);
5465 ir_type_wchar_t = get_ir_type(type_wchar_t);
5466 ir_type_void = get_ir_type(type_void);
5469 void exit_ast2firm(void)
5471 entitymap_destroy(&entitymap);
5472 obstack_free(&asm_obst, NULL);
5475 static void global_asm_to_firm(statement_t *s)
5477 for (; s != NULL; s = s->base.next) {
5478 assert(s->kind == STATEMENT_ASM);
5480 char const *const text = s->asms.asm_text.begin;
5481 size_t size = s->asms.asm_text.size;
5483 /* skip the last \0 */
5484 if (text[size - 1] == '\0')
5487 ident *const id = new_id_from_chars(text, size);
5492 void translation_unit_to_firm(translation_unit_t *unit)
5494 /* just to be sure */
5495 continue_label = NULL;
5497 current_switch_cond = NULL;
5498 current_translation_unit = unit;
5501 inner_functions = NEW_ARR_F(entity_t *, 0);
5503 scope_to_firm(&unit->scope);
5504 global_asm_to_firm(unit->global_asm);
5506 DEL_ARR_F(inner_functions);
5507 inner_functions = NULL;
5509 current_ir_graph = NULL;
5510 current_translation_unit = NULL;