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);
402 /* TODO: revive this with linkage stuff */
403 unsigned cc = get_method_calling_convention(irtype);
404 switch (function_type->calling_convention) {
405 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
408 set_method_calling_convention(irtype, SET_CDECL(cc));
412 if (function_type->variadic || function_type->unspecified_parameters)
415 /* only non-variadic function can use stdcall, else use cdecl */
416 set_method_calling_convention(irtype, SET_STDCALL(cc));
420 if (function_type->variadic || function_type->unspecified_parameters)
422 /* only non-variadic function can use fastcall, else use cdecl */
423 set_method_calling_convention(irtype, SET_FASTCALL(cc));
427 /* Hmm, leave default, not accepted by the parser yet. */
435 static ir_type *create_pointer_type(pointer_type_t *type)
437 type_t *points_to = type->points_to;
438 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
439 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
440 ir_points_to, mode_P_data);
445 static ir_type *create_array_type(array_type_t *type)
447 type_t *element_type = type->element_type;
448 ir_type *ir_element_type = get_ir_type(element_type);
450 ident *id = id_unique("array.%u");
451 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
453 const int align = get_type_alignment_bytes(ir_element_type);
454 set_type_alignment_bytes(ir_type, align);
456 if (type->size_constant) {
457 int n_elements = type->size;
459 set_array_bounds_int(ir_type, 0, 0, n_elements);
461 size_t elemsize = get_type_size_bytes(ir_element_type);
462 if (elemsize % align > 0) {
463 elemsize += align - (elemsize % align);
465 set_type_size_bytes(ir_type, n_elements * elemsize);
467 set_array_lower_bound_int(ir_type, 0, 0);
469 set_type_state(ir_type, layout_fixed);
475 * Return the signed integer type of size bits.
477 * @param size the size
479 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
482 static ir_mode *s_modes[64 + 1] = {NULL, };
486 if (size <= 0 || size > 64)
489 mode = s_modes[size];
493 snprintf(name, sizeof(name), "bf_I%u", size);
494 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
495 size <= 32 ? 32 : size );
496 s_modes[size] = mode;
500 snprintf(name, sizeof(name), "I%u", size);
501 ident *id = new_id_from_str(name);
502 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
503 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
504 set_primitive_base_type(res, base_tp);
510 * Return the unsigned integer type of size bits.
512 * @param size the size
514 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
517 static ir_mode *u_modes[64 + 1] = {NULL, };
521 if (size <= 0 || size > 64)
524 mode = u_modes[size];
528 snprintf(name, sizeof(name), "bf_U%u", size);
529 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
530 size <= 32 ? 32 : size );
531 u_modes[size] = mode;
536 snprintf(name, sizeof(name), "U%u", size);
537 ident *id = new_id_from_str(name);
538 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
539 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
540 set_primitive_base_type(res, base_tp);
545 static ir_type *create_bitfield_type(bitfield_type_t *const type)
547 type_t *base = skip_typeref(type->base_type);
548 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
549 ir_type *irbase = get_ir_type(base);
551 unsigned size = type->bit_size;
553 assert(!is_type_float(base));
554 if (is_type_signed(base)) {
555 return get_signed_int_type_for_bit_size(irbase, size);
557 return get_unsigned_int_type_for_bit_size(irbase, size);
561 #define INVALID_TYPE ((ir_type_ptr)-1)
564 COMPOUND_IS_STRUCT = false,
565 COMPOUND_IS_UNION = true
569 * Construct firm type from ast struct type.
571 * As anonymous inner structs get flattened to a single firm type, we might get
572 * irtype, outer_offset and out_align passed (they represent the position of
573 * the anonymous inner struct inside the resulting firm struct)
575 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
576 size_t *outer_offset, size_t *outer_align,
577 bool incomplete, bool is_union)
579 compound_t *compound = type->compound;
581 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
582 return compound->irtype;
585 size_t align_all = 1;
587 size_t bit_offset = 0;
590 if (irtype == NULL) {
591 symbol_t *symbol = compound->base.symbol;
593 if (symbol != NULL) {
594 id = new_id_from_str(symbol->string);
597 id = id_unique("__anonymous_union.%u");
599 id = id_unique("__anonymous_struct.%u");
602 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
605 irtype = new_d_type_union(id, dbgi);
607 irtype = new_d_type_struct(id, dbgi);
610 compound->irtype_complete = false;
611 compound->irtype = irtype;
613 offset = *outer_offset;
614 align_all = *outer_align;
620 compound->irtype_complete = true;
622 entity_t *entry = compound->members.entities;
623 for ( ; entry != NULL; entry = entry->base.next) {
624 if (entry->kind != ENTITY_COMPOUND_MEMBER)
627 size_t prev_offset = offset;
629 symbol_t *symbol = entry->base.symbol;
630 type_t *entry_type = skip_typeref(entry->declaration.type);
631 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
634 if (symbol != NULL) {
635 ident = new_id_from_str(symbol->string);
637 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
638 create_compound_type(&entry_type->compound, irtype, &offset,
639 &align_all, false, COMPOUND_IS_STRUCT);
640 goto finished_member;
641 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
642 create_compound_type(&entry_type->compound, irtype, &offset,
643 &align_all, false, COMPOUND_IS_UNION);
644 goto finished_member;
646 assert(entry_type->kind == TYPE_BITFIELD);
648 ident = id_unique("anon.%u");
651 ir_type *base_irtype;
652 if (entry_type->kind == TYPE_BITFIELD) {
653 base_irtype = get_ir_type(entry_type->bitfield.base_type);
655 base_irtype = get_ir_type(entry_type);
658 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
659 size_t misalign = offset % entry_alignment;
661 ir_type *entry_irtype = get_ir_type(entry_type);
662 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
665 size_t bits_remainder;
666 if (entry_type->kind == TYPE_BITFIELD) {
667 size_t size_bits = entry_type->bitfield.bit_size;
668 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
670 if (size_bits > rest_size_bits) {
671 /* start a new bucket */
672 offset += entry_alignment - misalign;
678 /* put into current bucket */
679 base = offset - misalign;
680 bits_remainder = misalign * 8 + bit_offset;
683 offset += size_bits / 8;
684 bit_offset = bit_offset + (size_bits % 8);
686 size_t entry_size = get_type_size_bytes(base_irtype);
687 if (misalign > 0 || bit_offset > 0)
688 offset += entry_alignment - misalign;
692 offset += entry_size;
696 if (entry_alignment > align_all) {
697 if (entry_alignment % align_all != 0) {
698 panic("uneven alignments not supported yet");
700 align_all = entry_alignment;
703 set_entity_offset(entity, base);
704 set_entity_offset_bits_remainder(entity,
705 (unsigned char) bits_remainder);
706 //add_struct_member(irtype, entity);
707 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
708 assert(entry->compound_member.entity == NULL);
709 entry->compound_member.entity = entity;
713 size_t entry_size = offset - prev_offset;
714 if (entry_size > size) {
726 size_t misalign = offset % align_all;
727 if (misalign > 0 || bit_offset > 0) {
728 size += align_all - misalign;
731 if (outer_offset != NULL) {
733 *outer_offset = offset;
735 *outer_offset += size;
738 if (align_all > *outer_align) {
739 if (align_all % *outer_align != 0) {
740 panic("uneven alignments not supported yet");
742 *outer_align = align_all;
745 set_type_alignment_bytes(irtype, align_all);
746 set_type_size_bytes(irtype, size);
747 set_type_state(irtype, layout_fixed);
753 static ir_type *create_enum_type(enum_type_t *const type)
755 type->base.firm_type = ir_type_int;
757 ir_mode *const mode = mode_int;
758 tarval *const one = get_mode_one(mode);
759 tarval * tv_next = get_tarval_null(mode);
761 bool constant_folding_old = constant_folding;
762 constant_folding = true;
764 enum_t *enume = type->enume;
765 entity_t *entry = enume->base.next;
766 for (; entry != NULL; entry = entry->base.next) {
767 if (entry->kind != ENTITY_ENUM_VALUE)
770 expression_t *const init = entry->enum_value.value;
772 ir_node *const cnst = expression_to_firm(init);
773 if (!is_Const(cnst)) {
774 panic("couldn't fold constant");
776 tv_next = get_Const_tarval(cnst);
778 entry->enum_value.tv = tv_next;
779 tv_next = tarval_add(tv_next, one);
782 constant_folding = constant_folding_old;
787 static ir_type *get_ir_type_incomplete(type_t *type)
789 assert(type != NULL);
790 type = skip_typeref(type);
792 if (type->base.firm_type != NULL) {
793 assert(type->base.firm_type != INVALID_TYPE);
794 return type->base.firm_type;
797 switch (type->kind) {
798 case TYPE_COMPOUND_STRUCT:
799 return create_compound_type(&type->compound, NULL, NULL, NULL,
800 true, COMPOUND_IS_STRUCT);
801 case TYPE_COMPOUND_UNION:
802 return create_compound_type(&type->compound, NULL, NULL, NULL,
803 true, COMPOUND_IS_UNION);
805 return get_ir_type(type);
809 ir_type *get_ir_type(type_t *type)
811 assert(type != NULL);
813 type = skip_typeref(type);
815 if (type->base.firm_type != NULL) {
816 assert(type->base.firm_type != INVALID_TYPE);
817 return type->base.firm_type;
820 ir_type *firm_type = NULL;
821 switch (type->kind) {
823 /* Happens while constant folding, when there was an error */
824 return create_atomic_type(&type_void->atomic);
827 firm_type = create_atomic_type(&type->atomic);
830 firm_type = create_complex_type(&type->complex);
833 firm_type = create_imaginary_type(&type->imaginary);
836 firm_type = create_method_type(&type->function);
839 firm_type = create_pointer_type(&type->pointer);
842 firm_type = create_array_type(&type->array);
844 case TYPE_COMPOUND_STRUCT:
845 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
846 false, COMPOUND_IS_STRUCT);
848 case TYPE_COMPOUND_UNION:
849 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
850 false, COMPOUND_IS_UNION);
853 firm_type = create_enum_type(&type->enumt);
856 firm_type = get_ir_type(type->builtin.real_type);
859 firm_type = create_bitfield_type(&type->bitfield);
867 if (firm_type == NULL)
868 panic("unknown type found");
870 type->base.firm_type = firm_type;
874 ir_mode *get_ir_mode(type_t *type)
876 ir_type *irtype = get_ir_type(type);
878 /* firm doesn't report a mode for arrays somehow... */
879 if (is_Array_type(irtype)) {
883 ir_mode *mode = get_type_mode(irtype);
884 assert(mode != NULL);
888 /** Names of the runtime functions. */
889 static const struct {
890 int id; /**< the rts id */
891 int n_res; /**< number of return values */
892 const char *name; /**< the name of the rts function */
893 int n_params; /**< number of parameters */
894 unsigned flags; /**< language flags */
896 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
897 { rts_abort, 0, "abort", 0, _C89 },
898 { rts_alloca, 1, "alloca", 1, _ALL },
899 { rts_abs, 1, "abs", 1, _C89 },
900 { rts_labs, 1, "labs", 1, _C89 },
901 { rts_llabs, 1, "llabs", 1, _C99 },
902 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
904 { rts_fabs, 1, "fabs", 1, _C89 },
905 { rts_sqrt, 1, "sqrt", 1, _C89 },
906 { rts_cbrt, 1, "cbrt", 1, _C99 },
907 { rts_exp, 1, "exp", 1, _C89 },
908 { rts_exp2, 1, "exp2", 1, _C89 },
909 { rts_exp10, 1, "exp10", 1, _GNUC },
910 { rts_log, 1, "log", 1, _C89 },
911 { rts_log2, 1, "log2", 1, _C89 },
912 { rts_log10, 1, "log10", 1, _C89 },
913 { rts_pow, 1, "pow", 2, _C89 },
914 { rts_sin, 1, "sin", 1, _C89 },
915 { rts_cos, 1, "cos", 1, _C89 },
916 { rts_tan, 1, "tan", 1, _C89 },
917 { rts_asin, 1, "asin", 1, _C89 },
918 { rts_acos, 1, "acos", 1, _C89 },
919 { rts_atan, 1, "atan", 1, _C89 },
920 { rts_sinh, 1, "sinh", 1, _C89 },
921 { rts_cosh, 1, "cosh", 1, _C89 },
922 { rts_tanh, 1, "tanh", 1, _C89 },
924 { rts_fabsf, 1, "fabsf", 1, _C99 },
925 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
926 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
927 { rts_expf, 1, "expf", 1, _C99 },
928 { rts_exp2f, 1, "exp2f", 1, _C99 },
929 { rts_exp10f, 1, "exp10f", 1, _GNUC },
930 { rts_logf, 1, "logf", 1, _C99 },
931 { rts_log2f, 1, "log2f", 1, _C99 },
932 { rts_log10f, 1, "log10f", 1, _C99 },
933 { rts_powf, 1, "powf", 2, _C99 },
934 { rts_sinf, 1, "sinf", 1, _C99 },
935 { rts_cosf, 1, "cosf", 1, _C99 },
936 { rts_tanf, 1, "tanf", 1, _C99 },
937 { rts_asinf, 1, "asinf", 1, _C99 },
938 { rts_acosf, 1, "acosf", 1, _C99 },
939 { rts_atanf, 1, "atanf", 1, _C99 },
940 { rts_sinhf, 1, "sinhf", 1, _C99 },
941 { rts_coshf, 1, "coshf", 1, _C99 },
942 { rts_tanhf, 1, "tanhf", 1, _C99 },
944 { rts_fabsl, 1, "fabsl", 1, _C99 },
945 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
946 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
947 { rts_expl, 1, "expl", 1, _C99 },
948 { rts_exp2l, 1, "exp2l", 1, _C99 },
949 { rts_exp10l, 1, "exp10l", 1, _GNUC },
950 { rts_logl, 1, "logl", 1, _C99 },
951 { rts_log2l, 1, "log2l", 1, _C99 },
952 { rts_log10l, 1, "log10l", 1, _C99 },
953 { rts_powl, 1, "powl", 2, _C99 },
954 { rts_sinl, 1, "sinl", 1, _C99 },
955 { rts_cosl, 1, "cosl", 1, _C99 },
956 { rts_tanl, 1, "tanl", 1, _C99 },
957 { rts_asinl, 1, "asinl", 1, _C99 },
958 { rts_acosl, 1, "acosl", 1, _C99 },
959 { rts_atanl, 1, "atanl", 1, _C99 },
960 { rts_sinhl, 1, "sinhl", 1, _C99 },
961 { rts_coshl, 1, "coshl", 1, _C99 },
962 { rts_tanhl, 1, "tanhl", 1, _C99 },
964 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
965 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
966 { rts_strcmp, 1, "strcmp", 2, _C89 },
967 { rts_strncmp, 1, "strncmp", 3, _C89 }
970 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
972 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
975 * Handle GNU attributes for entities
977 * @param ent the entity
978 * @param decl the routine declaration
980 static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
982 assert(is_declaration(entity));
983 decl_modifiers_t modifiers = entity->declaration.modifiers;
984 if (modifiers & DM_PURE) {
985 /* TRUE if the declaration includes the GNU
986 __attribute__((pure)) specifier. */
987 set_entity_additional_property(irentity, mtp_property_pure);
989 if (modifiers & DM_CONST) {
990 set_entity_additional_property(irentity, mtp_property_const);
991 have_const_functions = true;
993 if (modifiers & DM_USED) {
994 /* TRUE if the declaration includes the GNU
995 __attribute__((used)) specifier. */
996 set_entity_stickyness(irentity, stickyness_sticky);
1000 static bool is_main(entity_t *entity)
1002 static symbol_t *sym_main = NULL;
1003 if (sym_main == NULL) {
1004 sym_main = symbol_table_insert("main");
1007 if (entity->base.symbol != sym_main)
1009 /* must be in outermost scope */
1010 if (entity->base.parent_scope != ¤t_translation_unit->scope)
1017 * Creates an entity representing a function.
1019 * @param declaration the function declaration
1021 static ir_entity *get_function_entity(entity_t *entity)
1023 assert(entity->kind == ENTITY_FUNCTION);
1024 if (entity->function.entity != NULL) {
1025 return entity->function.entity;
1028 if (is_main(entity)) {
1029 /* force main to C linkage */
1030 type_t *type = entity->declaration.type;
1031 assert(is_type_function(type));
1032 if (type->function.linkage != NULL && type->function.linkage != sym_C) {
1033 errorf(&entity->base.source_position,
1034 "main must have \"C\" linkage");
1037 if (type->function.linkage == NULL || type->function.linkage != sym_C) {
1038 type_t *new_type = duplicate_type(type);
1039 new_type->function.linkage = sym_C;
1041 type = typehash_insert(new_type);
1042 if (type != new_type) {
1043 obstack_free(type_obst, new_type);
1045 entity->declaration.type = type;
1049 symbol_t *symbol = entity->base.symbol;
1050 ident *id = new_id_from_str(symbol->string);
1052 ir_type *global_type = get_glob_type();
1053 ir_type *ir_type_method = get_ir_type(entity->declaration.type);
1054 bool const has_body = entity->function.statement != NULL;
1056 /* already an entity defined? */
1057 ir_entity *irentity = entitymap_get(&entitymap, symbol);
1058 if (irentity != NULL) {
1059 if (get_entity_visibility(irentity) == visibility_external_allocated
1061 set_entity_visibility(irentity, visibility_external_visible);
1063 goto entity_created;
1066 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
1067 irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
1068 set_entity_ld_ident(irentity, create_ld_ident(entity));
1070 handle_gnu_attributes_ent(irentity, entity);
1072 /* static inline => local
1073 * extern inline => local
1074 * inline without definition => local
1075 * inline with definition => external_visible */
1076 storage_class_tag_t const storage_class
1077 = (storage_class_tag_t) entity->declaration.storage_class;
1078 bool const is_inline = entity->function.is_inline;
1079 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1080 set_entity_visibility(irentity, visibility_external_visible);
1081 } else if (storage_class == STORAGE_CLASS_STATIC ||
1082 (is_inline && has_body)) {
1084 /* this entity was declared, but is defined nowhere */
1085 set_entity_peculiarity(irentity, peculiarity_description);
1087 set_entity_visibility(irentity, visibility_local);
1088 } else if (has_body) {
1089 set_entity_visibility(irentity, visibility_external_visible);
1091 set_entity_visibility(irentity, visibility_external_allocated);
1093 set_entity_allocation(irentity, allocation_static);
1095 /* We should check for file scope here, but as long as we compile C only
1096 this is not needed. */
1097 if (! firm_opt.freestanding) {
1098 /* check for a known runtime function */
1099 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1100 if (id != rts_idents[i])
1103 /* ignore those rts functions not necessary needed for current mode */
1104 if ((c_mode & rts_data[i].flags) == 0)
1106 assert(rts_entities[rts_data[i].id] == NULL);
1107 rts_entities[rts_data[i].id] = irentity;
1111 entitymap_insert(&entitymap, symbol, irentity);
1114 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1115 entity->function.entity = irentity;
1121 * Creates a Const node representing a constant.
1123 static ir_node *const_to_firm(const const_expression_t *cnst)
1125 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1126 ir_mode *mode = get_ir_mode(cnst->base.type);
1131 if (mode_is_float(mode)) {
1132 tv = new_tarval_from_double(cnst->v.float_value, mode);
1134 if (mode_is_signed(mode)) {
1135 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1137 len = snprintf(buf, sizeof(buf), "%llu",
1138 (unsigned long long) cnst->v.int_value);
1140 tv = new_tarval_from_str(buf, len, mode);
1143 return new_d_Const(dbgi, mode, tv);
1147 * Creates a Const node representing a character constant.
1149 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1151 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1152 ir_mode *mode = get_ir_mode(cnst->base.type);
1154 long long int v = 0;
1155 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1156 if (char_is_signed) {
1157 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1159 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1163 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1164 tarval *tv = new_tarval_from_str(buf, len, mode);
1166 return new_d_Const(dbgi, mode, tv);
1170 * Creates a Const node representing a wide character constant.
1172 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1174 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1175 ir_mode *mode = get_ir_mode(cnst->base.type);
1177 long long int v = cnst->v.wide_character.begin[0];
1180 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1181 tarval *tv = new_tarval_from_str(buf, len, mode);
1183 return new_d_Const(dbgi, mode, tv);
1187 * Creates a SymConst for a given entity.
1189 * @param dbgi debug info
1190 * @param mode the (reference) mode for the SymConst
1191 * @param entity the entity
1193 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1196 assert(entity != NULL);
1197 union symconst_symbol sym;
1198 sym.entity_p = entity;
1199 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1203 * Creates a SymConst node representing a string constant.
1205 * @param src_pos the source position of the string constant
1206 * @param id_prefix a prefix for the name of the generated string constant
1207 * @param value the value of the string constant
1209 static ir_node *string_to_firm(const source_position_t *const src_pos,
1210 const char *const id_prefix,
1211 const string_t *const value)
1213 ir_type *const global_type = get_glob_type();
1214 dbg_info *const dbgi = get_dbg_info(src_pos);
1215 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1216 ir_type_const_char, dbgi);
1218 ident *const id = id_unique(id_prefix);
1219 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1220 set_entity_ld_ident(entity, id);
1221 set_entity_variability(entity, variability_constant);
1222 set_entity_allocation(entity, allocation_static);
1224 ir_type *const elem_type = ir_type_const_char;
1225 ir_mode *const mode = get_type_mode(elem_type);
1227 const char* const string = value->begin;
1228 const size_t slen = value->size;
1230 set_array_lower_bound_int(type, 0, 0);
1231 set_array_upper_bound_int(type, 0, slen);
1232 set_type_size_bytes(type, slen);
1233 set_type_state(type, layout_fixed);
1235 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1236 for (size_t i = 0; i < slen; ++i) {
1237 tvs[i] = new_tarval_from_long(string[i], mode);
1240 set_array_entity_values(entity, tvs, slen);
1243 return create_symconst(dbgi, mode_P_data, entity);
1247 * Creates a SymConst node representing a string literal.
1249 * @param literal the string literal
1251 static ir_node *string_literal_to_firm(
1252 const string_literal_expression_t* literal)
1254 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1259 * Creates a SymConst node representing a wide string literal.
1261 * @param literal the wide string literal
1263 static ir_node *wide_string_literal_to_firm(
1264 const wide_string_literal_expression_t* const literal)
1266 ir_type *const global_type = get_glob_type();
1267 ir_type *const elem_type = ir_type_wchar_t;
1268 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1269 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1272 ident *const id = id_unique("Lstr.%u");
1273 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1274 set_entity_ld_ident(entity, id);
1275 set_entity_variability(entity, variability_constant);
1276 set_entity_allocation(entity, allocation_static);
1278 ir_mode *const mode = get_type_mode(elem_type);
1280 const wchar_rep_t *const string = literal->value.begin;
1281 const size_t slen = literal->value.size;
1283 set_array_lower_bound_int(type, 0, 0);
1284 set_array_upper_bound_int(type, 0, slen);
1285 set_type_size_bytes(type, slen);
1286 set_type_state(type, layout_fixed);
1288 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1289 for (size_t i = 0; i < slen; ++i) {
1290 tvs[i] = new_tarval_from_long(string[i], mode);
1293 set_array_entity_values(entity, tvs, slen);
1296 return create_symconst(dbgi, mode_P_data, entity);
1299 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1300 ir_node *const addr)
1302 ir_type *irtype = get_ir_type(type);
1303 if (is_compound_type(irtype)
1304 || is_Method_type(irtype)
1305 || is_Array_type(irtype)) {
1309 ir_mode *const mode = get_type_mode(irtype);
1310 ir_node *const memory = get_store();
1311 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1312 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1313 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1315 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1316 set_Load_volatility(load, volatility_is_volatile);
1319 set_store(load_mem);
1324 * Creates a strict Conv if neccessary.
1326 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1328 ir_mode *mode = get_irn_mode(node);
1330 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1332 if (!mode_is_float(mode))
1335 /* check if there is already a Conv */
1336 if (is_Conv(node)) {
1337 /* convert it into a strict Conv */
1338 set_Conv_strict(node, 1);
1342 /* otherwise create a new one */
1343 return new_d_strictConv(dbgi, node, mode);
1346 static ir_node *get_global_var_address(dbg_info *const dbgi,
1347 const entity_t *const entity)
1349 assert(entity->kind == ENTITY_VARIABLE);
1350 assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1352 ir_entity *const irentity = entity->variable.v.entity;
1353 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1354 case STORAGE_CLASS_THREAD:
1355 case STORAGE_CLASS_THREAD_EXTERN:
1356 case STORAGE_CLASS_THREAD_STATIC: {
1357 ir_node *const no_mem = new_NoMem();
1358 ir_node *const tls = get_irg_tls(current_ir_graph);
1359 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1363 return create_symconst(dbgi, mode_P_data, irentity);
1368 * Returns the correct base address depending on whether it is a parameter or a
1369 * normal local variable.
1371 static ir_node *get_local_frame(ir_entity *const ent)
1373 ir_graph *const irg = current_ir_graph;
1374 const ir_type *const owner = get_entity_owner(ent);
1375 if (owner == get_irg_frame_type(irg)) {
1376 return get_irg_frame(irg);
1378 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1379 return get_irg_value_param_base(irg);
1383 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1385 ir_mode *value_mode = get_irn_mode(value);
1387 if (value_mode == dest_mode || is_Bad(value))
1390 if (dest_mode == mode_b) {
1391 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1392 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1393 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1397 return new_d_Conv(dbgi, value, dest_mode);
1401 * Keep all memory edges of the given block.
1403 static void keep_all_memory(ir_node *block) {
1404 ir_node *old = get_cur_block();
1406 set_cur_block(block);
1407 keep_alive(get_store());
1408 /* TODO: keep all memory edges from restricted pointers */
1412 static ir_node *reference_expression_enum_value_to_firm(
1413 const reference_expression_t *ref)
1415 entity_t *entity = ref->entity;
1416 type_t *type = skip_typeref(entity->enum_value.enum_type);
1417 /* make sure the type is constructed */
1418 (void) get_ir_type(type);
1420 ir_mode *const mode = get_ir_mode(type);
1421 return new_Const(mode, entity->enum_value.tv);
1424 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1426 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1427 entity_t *entity = ref->entity;
1428 assert(is_declaration(entity));
1429 type_t *type = skip_typeref(entity->declaration.type);
1431 /* make sure the type is constructed */
1432 (void) get_ir_type(type);
1434 switch ((declaration_kind_t) entity->declaration.kind) {
1435 case DECLARATION_KIND_UNKNOWN:
1438 case DECLARATION_KIND_LOCAL_VARIABLE: {
1439 ir_mode *const mode = get_ir_mode(type);
1440 return get_value(entity->variable.v.value_number, mode);
1442 case DECLARATION_KIND_FUNCTION: {
1443 ir_mode *const mode = get_ir_mode(type);
1444 return create_symconst(dbgi, mode, entity->function.entity);
1446 case DECLARATION_KIND_INNER_FUNCTION: {
1447 ir_mode *const mode = get_ir_mode(type);
1448 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1449 /* inner function not using the closure */
1450 return create_symconst(dbgi, mode, entity->function.entity);
1452 /* TODO: need trampoline here */
1453 panic("Trampoline code not implemented");
1454 return create_symconst(dbgi, mode, entity->function.entity);
1457 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1458 ir_node *const addr = get_global_var_address(dbgi, entity);
1459 return deref_address(dbgi, entity->declaration.type, addr);
1462 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1463 ir_entity *irentity = entity->variable.v.entity;
1464 ir_node *frame = get_local_frame(irentity);
1465 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1466 return deref_address(dbgi, entity->declaration.type, sel);
1469 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1470 return entity->variable.v.vla_base;
1472 case DECLARATION_KIND_COMPOUND_MEMBER:
1473 panic("not implemented reference type");
1476 panic("reference to declaration with unknown type found");
1479 static ir_node *reference_addr(const reference_expression_t *ref)
1481 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1482 entity_t *entity = ref->entity;
1483 assert(is_declaration(entity));
1485 switch((declaration_kind_t) entity->declaration.kind) {
1486 case DECLARATION_KIND_UNKNOWN:
1488 case DECLARATION_KIND_LOCAL_VARIABLE:
1489 /* you can store to a local variable (so we don't panic but return NULL
1490 * as an indicator for no real address) */
1492 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1493 ir_node *const addr = get_global_var_address(dbgi, entity);
1496 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1497 ir_entity *irentity = entity->variable.v.entity;
1498 ir_node *frame = get_local_frame(irentity);
1499 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1504 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1505 return entity->variable.v.vla_base;
1507 case DECLARATION_KIND_FUNCTION: {
1508 type_t *const type = skip_typeref(entity->declaration.type);
1509 ir_mode *const mode = get_ir_mode(type);
1510 return create_symconst(dbgi, mode, entity->function.entity);
1513 case DECLARATION_KIND_INNER_FUNCTION:
1514 case DECLARATION_KIND_COMPOUND_MEMBER:
1515 panic("not implemented reference type");
1518 panic("reference to declaration with unknown type found");
1522 * Transform calls to builtin functions.
1524 static ir_node *process_builtin_call(const call_expression_t *call)
1526 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1528 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1529 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1531 type_t *type = skip_typeref(builtin->base.type);
1532 assert(is_type_pointer(type));
1534 type_t *function_type = skip_typeref(type->pointer.points_to);
1535 symbol_t *symbol = builtin->symbol;
1537 switch(symbol->ID) {
1538 case T___builtin_alloca: {
1539 if (call->arguments == NULL || call->arguments->next != NULL) {
1540 panic("invalid number of parameters on __builtin_alloca");
1542 expression_t *argument = call->arguments->expression;
1543 ir_node *size = expression_to_firm(argument);
1545 ir_node *store = get_store();
1546 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1548 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1550 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1555 case T___builtin_huge_val:
1556 case T___builtin_inf:
1557 case T___builtin_inff:
1558 case T___builtin_infl: {
1559 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1560 tarval *tv = get_mode_infinite(mode);
1561 ir_node *res = new_d_Const(dbgi, mode, tv);
1564 case T___builtin_nan:
1565 case T___builtin_nanf:
1566 case T___builtin_nanl: {
1567 /* Ignore string for now... */
1568 assert(is_type_function(function_type));
1569 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1570 tarval *tv = get_mode_NAN(mode);
1571 ir_node *res = new_d_Const(dbgi, mode, tv);
1574 case T___builtin_va_end:
1577 panic("Unsupported builtin found\n");
1582 * Transform a call expression.
1583 * Handles some special cases, like alloca() calls, which must be resolved
1584 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1585 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1588 static ir_node *call_expression_to_firm(const call_expression_t *call)
1590 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1591 assert(get_cur_block() != NULL);
1593 expression_t *function = call->function;
1594 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1595 return process_builtin_call(call);
1597 if (function->kind == EXPR_REFERENCE) {
1598 const reference_expression_t *ref = &function->reference;
1599 entity_t *entity = ref->entity;
1601 if (entity->kind == ENTITY_FUNCTION
1602 && entity->function.entity == rts_entities[rts_alloca]) {
1603 /* handle alloca() call */
1604 expression_t *argument = call->arguments->expression;
1605 ir_node *size = expression_to_firm(argument);
1607 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1609 ir_node *store = get_store();
1610 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1611 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1613 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1615 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1620 ir_node *callee = expression_to_firm(function);
1622 type_t *type = skip_typeref(function->base.type);
1623 assert(is_type_pointer(type));
1624 pointer_type_t *pointer_type = &type->pointer;
1625 type_t *points_to = skip_typeref(pointer_type->points_to);
1626 assert(is_type_function(points_to));
1627 function_type_t *function_type = &points_to->function;
1629 int n_parameters = 0;
1630 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1631 ir_type *new_method_type = NULL;
1632 if (function_type->variadic || function_type->unspecified_parameters) {
1633 const call_argument_t *argument = call->arguments;
1634 for ( ; argument != NULL; argument = argument->next) {
1638 /* we need to construct a new method type matching the call
1640 int n_res = get_method_n_ress(ir_method_type);
1641 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1642 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1643 n_parameters, n_res, dbgi);
1644 set_method_calling_convention(new_method_type,
1645 get_method_calling_convention(ir_method_type));
1646 set_method_additional_properties(new_method_type,
1647 get_method_additional_properties(ir_method_type));
1648 set_method_variadicity(new_method_type,
1649 get_method_variadicity(ir_method_type));
1651 for (int i = 0; i < n_res; ++i) {
1652 set_method_res_type(new_method_type, i,
1653 get_method_res_type(ir_method_type, i));
1655 argument = call->arguments;
1656 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1657 expression_t *expression = argument->expression;
1658 ir_type *irtype = get_ir_type(expression->base.type);
1659 set_method_param_type(new_method_type, i, irtype);
1661 ir_method_type = new_method_type;
1663 n_parameters = get_method_n_params(ir_method_type);
1666 ir_node *in[n_parameters];
1668 const call_argument_t *argument = call->arguments;
1669 for (int n = 0; n < n_parameters; ++n) {
1670 expression_t *expression = argument->expression;
1671 ir_node *arg_node = expression_to_firm(expression);
1673 arg_node = do_strict_conv(dbgi, arg_node);
1677 argument = argument->next;
1680 ir_node *store = get_store();
1681 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1683 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1686 type_t *return_type = skip_typeref(function_type->return_type);
1687 ir_node *result = NULL;
1689 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1691 if (is_type_scalar(return_type)) {
1692 mode = get_ir_mode(return_type);
1696 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1697 result = new_d_Proj(dbgi, resproj, mode, 0);
1700 if (function->kind == EXPR_REFERENCE &&
1701 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1702 /* A dead end: Keep the Call and the Block. Also place all further
1703 * nodes into a new and unreachable block. */
1705 keep_alive(get_cur_block());
1712 static void statement_to_firm(statement_t *statement);
1713 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1715 static ir_node *expression_to_addr(const expression_t *expression);
1716 static ir_node *create_condition_evaluation(const expression_t *expression,
1717 ir_node *true_block,
1718 ir_node *false_block);
1720 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1723 value = do_strict_conv(dbgi, value);
1725 ir_node *memory = get_store();
1727 if (is_type_scalar(type)) {
1728 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1729 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1730 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1731 set_Store_volatility(store, volatility_is_volatile);
1732 set_store(store_mem);
1734 ir_type *irtype = get_ir_type(type);
1735 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1736 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1737 set_store(copyb_mem);
1741 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1743 tarval *all_one = get_mode_all_one(mode);
1744 int mode_size = get_mode_size_bits(mode);
1746 assert(offset >= 0);
1748 assert(offset + size <= mode_size);
1749 if (size == mode_size) {
1753 long shiftr = get_mode_size_bits(mode) - size;
1754 long shiftl = offset;
1755 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1756 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1757 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1758 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1763 static void bitfield_store_to_firm(dbg_info *dbgi,
1764 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1766 ir_type *entity_type = get_entity_type(entity);
1767 ir_type *base_type = get_primitive_base_type(entity_type);
1768 assert(base_type != NULL);
1769 ir_mode *mode = get_type_mode(base_type);
1771 value = create_conv(dbgi, value, mode);
1773 /* kill upper bits of value and shift to right position */
1774 int bitoffset = get_entity_offset_bits_remainder(entity);
1775 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1777 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1778 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1779 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1780 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1781 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1782 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1784 /* load current value */
1785 ir_node *mem = get_store();
1786 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1787 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1788 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1789 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1790 tarval *inv_mask = tarval_not(shift_mask);
1791 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1792 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1794 /* construct new value and store */
1795 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1796 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1797 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1798 set_store(store_mem);
1801 set_Load_volatility(load, volatility_is_volatile);
1802 set_Store_volatility(store, volatility_is_volatile);
1806 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1809 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1810 type_t *type = expression->base.type;
1811 ir_mode *mode = get_ir_mode(type);
1812 ir_node *mem = get_store();
1813 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1814 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1815 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1817 load_res = create_conv(dbgi, load_res, mode_int);
1819 set_store(load_mem);
1821 /* kill upper bits */
1822 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1823 ir_entity *entity = expression->compound_entry->compound_member.entity;
1824 int bitoffset = get_entity_offset_bits_remainder(entity);
1825 ir_type *entity_type = get_entity_type(entity);
1826 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1827 long shift_bitsl = machine_size - bitoffset - bitsize;
1828 assert(shift_bitsl >= 0);
1829 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1830 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1831 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1833 long shift_bitsr = bitoffset + shift_bitsl;
1834 assert(shift_bitsr <= (long) machine_size);
1835 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1836 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1838 if (mode_is_signed(mode)) {
1839 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1841 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1844 return create_conv(dbgi, shiftr, mode);
1847 /* make sure the selected compound type is constructed */
1848 static void construct_select_compound(const select_expression_t *expression)
1850 type_t *type = skip_typeref(expression->compound->base.type);
1851 if (is_type_pointer(type)) {
1852 type = type->pointer.points_to;
1854 (void) get_ir_type(type);
1857 static void set_value_for_expression_addr(const expression_t *expression,
1858 ir_node *value, ir_node *addr)
1860 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1861 value = do_strict_conv(dbgi, value);
1863 if (expression->kind == EXPR_REFERENCE) {
1864 const reference_expression_t *ref = &expression->reference;
1866 entity_t *entity = ref->entity;
1867 assert(is_declaration(entity));
1868 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1869 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1870 set_value(entity->variable.v.value_number, value);
1876 addr = expression_to_addr(expression);
1878 type_t *type = skip_typeref(expression->base.type);
1880 if (expression->kind == EXPR_SELECT) {
1881 const select_expression_t *select = &expression->select;
1883 construct_select_compound(select);
1885 entity_t *entity = select->compound_entry;
1886 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1887 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1888 ir_entity *irentity = entity->compound_member.entity;
1890 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1891 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1896 assign_value(dbgi, addr, type, value);
1899 static void set_value_for_expression(const expression_t *expression,
1902 set_value_for_expression_addr(expression, value, NULL);
1905 static ir_node *get_value_from_lvalue(const expression_t *expression,
1908 if (expression->kind == EXPR_REFERENCE) {
1909 const reference_expression_t *ref = &expression->reference;
1911 entity_t *entity = ref->entity;
1912 assert(entity->kind == ENTITY_VARIABLE);
1913 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1914 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1915 assert(addr == NULL);
1916 ir_mode *mode = get_ir_mode(expression->base.type);
1917 return get_value(entity->variable.v.value_number, mode);
1921 assert(addr != NULL);
1922 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1925 if (expression->kind == EXPR_SELECT &&
1926 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1927 construct_select_compound(&expression->select);
1928 value = bitfield_extract_to_firm(&expression->select, addr);
1930 value = deref_address(dbgi, expression->base.type, addr);
1937 static ir_node *create_incdec(const unary_expression_t *expression)
1939 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1940 const expression_t *value_expr = expression->value;
1941 ir_node *addr = expression_to_addr(value_expr);
1942 ir_node *value = get_value_from_lvalue(value_expr, addr);
1944 type_t *type = skip_typeref(expression->base.type);
1945 ir_mode *mode = get_ir_mode(expression->base.type);
1948 if (is_type_pointer(type)) {
1949 pointer_type_t *pointer_type = &type->pointer;
1950 offset = get_type_size(pointer_type->points_to);
1952 assert(is_type_arithmetic(type));
1953 offset = new_Const(mode, get_mode_one(mode));
1957 ir_node *store_value;
1958 switch(expression->base.kind) {
1959 case EXPR_UNARY_POSTFIX_INCREMENT:
1961 store_value = new_d_Add(dbgi, value, offset, mode);
1963 case EXPR_UNARY_POSTFIX_DECREMENT:
1965 store_value = new_d_Sub(dbgi, value, offset, mode);
1967 case EXPR_UNARY_PREFIX_INCREMENT:
1968 result = new_d_Add(dbgi, value, offset, mode);
1969 store_value = result;
1971 case EXPR_UNARY_PREFIX_DECREMENT:
1972 result = new_d_Sub(dbgi, value, offset, mode);
1973 store_value = result;
1976 panic("no incdec expr in create_incdec");
1979 set_value_for_expression_addr(value_expr, store_value, addr);
1984 static bool is_local_variable(expression_t *expression)
1986 if (expression->kind != EXPR_REFERENCE)
1988 reference_expression_t *ref_expr = &expression->reference;
1989 entity_t *entity = ref_expr->entity;
1990 if (entity->kind != ENTITY_VARIABLE)
1992 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1993 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
1996 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1999 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2000 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2001 case EXPR_BINARY_NOTEQUAL:
2002 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2003 case EXPR_BINARY_ISLESS:
2004 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2005 case EXPR_BINARY_ISLESSEQUAL:
2006 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2007 case EXPR_BINARY_ISGREATER:
2008 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2009 case EXPR_BINARY_ISGREATEREQUAL:
2010 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2011 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2016 panic("trying to get pn_Cmp from non-comparison binexpr type");
2020 * Handle the assume optimizer hint: check if a Confirm
2021 * node can be created.
2023 * @param dbi debug info
2024 * @param expr the IL assume expression
2026 * we support here only some simple cases:
2031 static ir_node *handle_assume_compare(dbg_info *dbi,
2032 const binary_expression_t *expression)
2034 expression_t *op1 = expression->left;
2035 expression_t *op2 = expression->right;
2036 entity_t *var2, *var = NULL;
2037 ir_node *res = NULL;
2040 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2042 if (is_local_variable(op1) && is_local_variable(op2)) {
2043 var = op1->reference.entity;
2044 var2 = op2->reference.entity;
2046 type_t *const type = skip_typeref(var->declaration.type);
2047 ir_mode *const mode = get_ir_mode(type);
2049 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2050 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2052 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2053 set_value(var2->variable.v.value_number, res);
2055 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2056 set_value(var->variable.v.value_number, res);
2062 if (is_local_variable(op1) && is_constant_expression(op2)) {
2063 var = op1->reference.entity;
2065 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2066 cmp_val = get_inversed_pnc(cmp_val);
2067 var = op2->reference.entity;
2072 type_t *const type = skip_typeref(var->declaration.type);
2073 ir_mode *const mode = get_ir_mode(type);
2075 res = get_value(var->variable.v.value_number, mode);
2076 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2077 set_value(var->variable.v.value_number, res);
2083 * Handle the assume optimizer hint.
2085 * @param dbi debug info
2086 * @param expr the IL assume expression
2088 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2089 switch(expression->kind) {
2090 case EXPR_BINARY_EQUAL:
2091 case EXPR_BINARY_NOTEQUAL:
2092 case EXPR_BINARY_LESS:
2093 case EXPR_BINARY_LESSEQUAL:
2094 case EXPR_BINARY_GREATER:
2095 case EXPR_BINARY_GREATEREQUAL:
2096 return handle_assume_compare(dbi, &expression->binary);
2102 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2104 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2105 type_t *type = skip_typeref(expression->base.type);
2107 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2108 return expression_to_addr(expression->value);
2110 const expression_t *value = expression->value;
2112 switch(expression->base.kind) {
2113 case EXPR_UNARY_NEGATE: {
2114 ir_node *value_node = expression_to_firm(value);
2115 ir_mode *mode = get_ir_mode(type);
2116 return new_d_Minus(dbgi, value_node, mode);
2118 case EXPR_UNARY_PLUS:
2119 return expression_to_firm(value);
2120 case EXPR_UNARY_BITWISE_NEGATE: {
2121 ir_node *value_node = expression_to_firm(value);
2122 ir_mode *mode = get_ir_mode(type);
2123 return new_d_Not(dbgi, value_node, mode);
2125 case EXPR_UNARY_NOT: {
2126 ir_node *value_node = _expression_to_firm(value);
2127 value_node = create_conv(dbgi, value_node, mode_b);
2128 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2131 case EXPR_UNARY_DEREFERENCE: {
2132 ir_node *value_node = expression_to_firm(value);
2133 type_t *value_type = skip_typeref(value->base.type);
2134 assert(is_type_pointer(value_type));
2135 type_t *points_to = value_type->pointer.points_to;
2136 return deref_address(dbgi, points_to, value_node);
2138 case EXPR_UNARY_POSTFIX_INCREMENT:
2139 case EXPR_UNARY_POSTFIX_DECREMENT:
2140 case EXPR_UNARY_PREFIX_INCREMENT:
2141 case EXPR_UNARY_PREFIX_DECREMENT:
2142 return create_incdec(expression);
2143 case EXPR_UNARY_CAST: {
2144 ir_node *value_node = expression_to_firm(value);
2145 if (is_type_scalar(type)) {
2146 ir_mode *mode = get_ir_mode(type);
2147 ir_node *node = create_conv(dbgi, value_node, mode);
2148 node = do_strict_conv(dbgi, node);
2151 /* make sure firm type is constructed */
2152 (void) get_ir_type(type);
2156 case EXPR_UNARY_CAST_IMPLICIT: {
2157 ir_node *value_node = expression_to_firm(value);
2158 if (is_type_scalar(type)) {
2159 ir_mode *mode = get_ir_mode(type);
2160 return create_conv(dbgi, value_node, mode);
2165 case EXPR_UNARY_ASSUME:
2166 if (firm_opt.confirm)
2167 return handle_assume(dbgi, value);
2174 panic("invalid UNEXPR type found");
2178 * produces a 0/1 depending of the value of a mode_b node
2180 static ir_node *produce_condition_result(const expression_t *expression,
2183 ir_mode *mode = get_ir_mode(expression->base.type);
2184 ir_node *cur_block = get_cur_block();
2186 ir_node *one_block = new_immBlock();
2187 ir_node *one = new_Const(mode, get_mode_one(mode));
2188 ir_node *jmp_one = new_d_Jmp(dbgi);
2190 ir_node *zero_block = new_immBlock();
2191 ir_node *zero = new_Const(mode, get_mode_null(mode));
2192 ir_node *jmp_zero = new_d_Jmp(dbgi);
2194 set_cur_block(cur_block);
2195 create_condition_evaluation(expression, one_block, zero_block);
2196 mature_immBlock(one_block);
2197 mature_immBlock(zero_block);
2199 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2200 new_Block(2, in_cf);
2202 ir_node *in[2] = { one, zero };
2203 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2208 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2209 ir_node *value, type_t *type)
2211 pointer_type_t *const pointer_type = &type->pointer;
2212 type_t *const points_to = skip_typeref(pointer_type->points_to);
2213 unsigned elem_size = get_type_size_const(points_to);
2215 /* gcc extension: allow arithmetic with void * and function * */
2216 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2217 is_type_function(points_to)) {
2221 assert(elem_size >= 1);
2225 value = create_conv(dbgi, value, mode_int);
2226 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2227 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2231 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2232 ir_node *left, ir_node *right)
2235 type_t *type_left = skip_typeref(expression->left->base.type);
2236 type_t *type_right = skip_typeref(expression->right->base.type);
2238 expression_kind_t kind = expression->base.kind;
2241 case EXPR_BINARY_SHIFTLEFT:
2242 case EXPR_BINARY_SHIFTRIGHT:
2243 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2244 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2245 mode = get_irn_mode(left);
2246 right = create_conv(dbgi, right, mode_uint);
2249 case EXPR_BINARY_SUB:
2250 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2251 const pointer_type_t *const ptr_type = &type_left->pointer;
2253 mode = get_ir_mode(expression->base.type);
2254 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2255 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2256 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2257 ir_node *const no_mem = new_NoMem();
2258 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2259 mode, op_pin_state_floats);
2260 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2263 case EXPR_BINARY_SUB_ASSIGN:
2264 if (is_type_pointer(type_left)) {
2265 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2266 mode = get_ir_mode(type_left);
2271 case EXPR_BINARY_ADD:
2272 case EXPR_BINARY_ADD_ASSIGN:
2273 if (is_type_pointer(type_left)) {
2274 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2275 mode = get_ir_mode(type_left);
2277 } else if (is_type_pointer(type_right)) {
2278 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2279 mode = get_ir_mode(type_right);
2286 mode = get_irn_mode(right);
2287 left = create_conv(dbgi, left, mode);
2292 case EXPR_BINARY_ADD_ASSIGN:
2293 case EXPR_BINARY_ADD:
2294 return new_d_Add(dbgi, left, right, mode);
2295 case EXPR_BINARY_SUB_ASSIGN:
2296 case EXPR_BINARY_SUB:
2297 return new_d_Sub(dbgi, left, right, mode);
2298 case EXPR_BINARY_MUL_ASSIGN:
2299 case EXPR_BINARY_MUL:
2300 return new_d_Mul(dbgi, left, right, mode);
2301 case EXPR_BINARY_BITWISE_AND:
2302 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2303 return new_d_And(dbgi, left, right, mode);
2304 case EXPR_BINARY_BITWISE_OR:
2305 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2306 return new_d_Or(dbgi, left, right, mode);
2307 case EXPR_BINARY_BITWISE_XOR:
2308 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2309 return new_d_Eor(dbgi, left, right, mode);
2310 case EXPR_BINARY_SHIFTLEFT:
2311 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2312 return new_d_Shl(dbgi, left, right, mode);
2313 case EXPR_BINARY_SHIFTRIGHT:
2314 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2315 if (mode_is_signed(mode)) {
2316 return new_d_Shrs(dbgi, left, right, mode);
2318 return new_d_Shr(dbgi, left, right, mode);
2320 case EXPR_BINARY_DIV:
2321 case EXPR_BINARY_DIV_ASSIGN: {
2322 ir_node *pin = new_Pin(new_NoMem());
2325 if (mode_is_float(mode)) {
2326 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2327 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2329 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2330 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2334 case EXPR_BINARY_MOD:
2335 case EXPR_BINARY_MOD_ASSIGN: {
2336 ir_node *pin = new_Pin(new_NoMem());
2337 assert(!mode_is_float(mode));
2338 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2339 op_pin_state_floats);
2340 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2344 panic("unexpected expression kind");
2348 static ir_node *create_lazy_op(const binary_expression_t *expression)
2350 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2351 type_t *type = expression->base.type;
2352 ir_mode *mode = get_ir_mode(type);
2354 if (is_constant_expression(expression->left)) {
2355 long val = fold_constant(expression->left);
2356 expression_kind_t ekind = expression->base.kind;
2357 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2358 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2359 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2360 return expression_to_firm(expression->right);
2362 return new_Const(mode, get_mode_one(mode));
2366 return produce_condition_result((const expression_t*) expression, dbgi);
2369 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2370 ir_node *right, ir_mode *mode);
2372 static ir_node *create_assign_binop(const binary_expression_t *expression)
2374 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2375 const expression_t *left_expr = expression->left;
2376 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2377 ir_node *right = expression_to_firm(expression->right);
2378 ir_node *left_addr = expression_to_addr(left_expr);
2379 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2380 ir_node *result = create_op(dbgi, expression, left, right);
2382 result = create_conv(dbgi, result, left_mode);
2383 result = do_strict_conv(dbgi, result);
2385 set_value_for_expression_addr(left_expr, result, left_addr);
2390 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2392 expression_kind_t kind = expression->base.kind;
2395 case EXPR_BINARY_EQUAL:
2396 case EXPR_BINARY_NOTEQUAL:
2397 case EXPR_BINARY_LESS:
2398 case EXPR_BINARY_LESSEQUAL:
2399 case EXPR_BINARY_GREATER:
2400 case EXPR_BINARY_GREATEREQUAL:
2401 case EXPR_BINARY_ISGREATER:
2402 case EXPR_BINARY_ISGREATEREQUAL:
2403 case EXPR_BINARY_ISLESS:
2404 case EXPR_BINARY_ISLESSEQUAL:
2405 case EXPR_BINARY_ISLESSGREATER:
2406 case EXPR_BINARY_ISUNORDERED: {
2407 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2408 ir_node *left = expression_to_firm(expression->left);
2409 ir_node *right = expression_to_firm(expression->right);
2410 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2411 long pnc = get_pnc(kind, expression->left->base.type);
2412 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2415 case EXPR_BINARY_ASSIGN: {
2416 ir_node *addr = expression_to_addr(expression->left);
2417 ir_node *right = expression_to_firm(expression->right);
2418 set_value_for_expression_addr(expression->left, right, addr);
2422 case EXPR_BINARY_ADD:
2423 case EXPR_BINARY_SUB:
2424 case EXPR_BINARY_MUL:
2425 case EXPR_BINARY_DIV:
2426 case EXPR_BINARY_MOD:
2427 case EXPR_BINARY_BITWISE_AND:
2428 case EXPR_BINARY_BITWISE_OR:
2429 case EXPR_BINARY_BITWISE_XOR:
2430 case EXPR_BINARY_SHIFTLEFT:
2431 case EXPR_BINARY_SHIFTRIGHT:
2433 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2434 ir_node *left = expression_to_firm(expression->left);
2435 ir_node *right = expression_to_firm(expression->right);
2436 return create_op(dbgi, expression, left, right);
2438 case EXPR_BINARY_LOGICAL_AND:
2439 case EXPR_BINARY_LOGICAL_OR:
2440 return create_lazy_op(expression);
2441 case EXPR_BINARY_COMMA:
2442 /* create side effects of left side */
2443 (void) expression_to_firm(expression->left);
2444 return _expression_to_firm(expression->right);
2446 case EXPR_BINARY_ADD_ASSIGN:
2447 case EXPR_BINARY_SUB_ASSIGN:
2448 case EXPR_BINARY_MUL_ASSIGN:
2449 case EXPR_BINARY_MOD_ASSIGN:
2450 case EXPR_BINARY_DIV_ASSIGN:
2451 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2452 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2453 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2454 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2455 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2456 return create_assign_binop(expression);
2457 case EXPR_BINARY_BUILTIN_EXPECT:
2458 return _expression_to_firm(expression->left);
2460 panic("TODO binexpr type");
2464 static ir_node *array_access_addr(const array_access_expression_t *expression)
2466 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2467 ir_node *base_addr = expression_to_firm(expression->array_ref);
2468 ir_node *offset = expression_to_firm(expression->index);
2470 type_t *offset_type = skip_typeref(expression->index->base.type);
2472 if (is_type_signed(offset_type)) {
2473 mode = get_ir_mode(type_ssize_t);
2475 mode = get_ir_mode(type_size_t);
2477 offset = create_conv(dbgi, offset, mode);
2479 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2480 assert(is_type_pointer(ref_type));
2481 pointer_type_t *pointer_type = &ref_type->pointer;
2483 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2484 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2485 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2487 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2492 static ir_node *array_access_to_firm(
2493 const array_access_expression_t *expression)
2495 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2496 ir_node *addr = array_access_addr(expression);
2497 type_t *type = revert_automatic_type_conversion(
2498 (const expression_t*) expression);
2499 type = skip_typeref(type);
2501 return deref_address(dbgi, type, addr);
2504 static long get_offsetof_offset(const offsetof_expression_t *expression)
2506 type_t *orig_type = expression->type;
2509 designator_t *designator = expression->designator;
2510 for ( ; designator != NULL; designator = designator->next) {
2511 type_t *type = skip_typeref(orig_type);
2512 /* be sure the type is constructed */
2513 (void) get_ir_type(type);
2515 if (designator->symbol != NULL) {
2516 assert(is_type_compound(type));
2517 symbol_t *symbol = designator->symbol;
2519 compound_t *compound = type->compound.compound;
2520 entity_t *iter = compound->members.entities;
2521 for ( ; iter != NULL; iter = iter->base.next) {
2522 if (iter->base.symbol == symbol) {
2526 assert(iter != NULL);
2528 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2529 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2530 offset += get_entity_offset(iter->compound_member.entity);
2532 orig_type = iter->declaration.type;
2534 expression_t *array_index = designator->array_index;
2535 assert(designator->array_index != NULL);
2536 assert(is_type_array(type));
2538 long index = fold_constant(array_index);
2539 ir_type *arr_type = get_ir_type(type);
2540 ir_type *elem_type = get_array_element_type(arr_type);
2541 long elem_size = get_type_size_bytes(elem_type);
2543 offset += index * elem_size;
2545 orig_type = type->array.element_type;
2552 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2554 ir_mode *mode = get_ir_mode(expression->base.type);
2555 long offset = get_offsetof_offset(expression);
2556 tarval *tv = new_tarval_from_long(offset, mode);
2557 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2559 return new_d_Const(dbgi, mode, tv);
2562 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2563 ir_entity *entity, type_t *type);
2565 static ir_node *compound_literal_to_firm(
2566 const compound_literal_expression_t *expression)
2568 type_t *type = expression->type;
2570 /* create an entity on the stack */
2571 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2573 ident *const id = id_unique("CompLit.%u");
2574 ir_type *const irtype = get_ir_type(type);
2575 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2576 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2577 set_entity_ld_ident(entity, id);
2579 set_entity_variability(entity, variability_uninitialized);
2581 /* create initialisation code */
2582 initializer_t *initializer = expression->initializer;
2583 create_local_initializer(initializer, dbgi, entity, type);
2585 /* create a sel for the compound literal address */
2586 ir_node *frame = get_local_frame(entity);
2587 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2592 * Transform a sizeof expression into Firm code.
2594 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2596 type_t *type = expression->type;
2598 type = expression->tp_expression->base.type;
2599 assert(type != NULL);
2602 type = skip_typeref(type);
2603 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2604 if (is_type_array(type) && type->array.is_vla
2605 && expression->tp_expression != NULL) {
2606 expression_to_firm(expression->tp_expression);
2609 return get_type_size(type);
2613 * Transform an alignof expression into Firm code.
2615 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2617 type_t *type = expression->type;
2619 /* beware: if expression is a variable reference, return the
2620 alignment of the variable. */
2621 const expression_t *tp_expression = expression->tp_expression;
2622 const entity_t *entity = expression_is_variable(tp_expression);
2623 if (entity != NULL) {
2624 /* TODO: get the alignment of this variable. */
2627 type = tp_expression->base.type;
2628 assert(type != NULL);
2631 ir_mode *const mode = get_ir_mode(expression->base.type);
2632 symconst_symbol sym;
2633 sym.type_p = get_ir_type(type);
2634 return new_SymConst(mode, sym, symconst_type_align);
2637 static void init_ir_types(void);
2639 long fold_constant(const expression_t *expression)
2641 assert(is_type_valid(skip_typeref(expression->base.type)));
2643 bool constant_folding_old = constant_folding;
2644 constant_folding = true;
2648 assert(is_constant_expression(expression));
2650 ir_graph *old_current_ir_graph = current_ir_graph;
2651 if (current_ir_graph == NULL) {
2652 current_ir_graph = get_const_code_irg();
2655 ir_node *cnst = expression_to_firm(expression);
2656 current_ir_graph = old_current_ir_graph;
2658 if (!is_Const(cnst)) {
2659 panic("couldn't fold constant\n");
2662 tarval *tv = get_Const_tarval(cnst);
2663 if (!tarval_is_long(tv)) {
2664 panic("result of constant folding is not integer\n");
2667 constant_folding = constant_folding_old;
2669 return get_tarval_long(tv);
2672 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2674 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2676 /* first try to fold a constant condition */
2677 if (is_constant_expression(expression->condition)) {
2678 long val = fold_constant(expression->condition);
2680 expression_t *true_expression = expression->true_expression;
2681 if (true_expression == NULL)
2682 true_expression = expression->condition;
2683 return expression_to_firm(true_expression);
2685 return expression_to_firm(expression->false_expression);
2689 ir_node *cur_block = get_cur_block();
2691 /* create the true block */
2692 ir_node *true_block = new_immBlock();
2694 ir_node *true_val = expression->true_expression != NULL ?
2695 expression_to_firm(expression->true_expression) : NULL;
2696 ir_node *true_jmp = new_Jmp();
2698 /* create the false block */
2699 ir_node *false_block = new_immBlock();
2701 ir_node *false_val = expression_to_firm(expression->false_expression);
2702 ir_node *false_jmp = new_Jmp();
2704 /* create the condition evaluation */
2705 set_cur_block(cur_block);
2706 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2707 if (expression->true_expression == NULL) {
2708 if (cond_expr != NULL) {
2709 true_val = cond_expr;
2711 /* Condition ended with a short circuit (&&, ||, !) operation.
2712 * Generate a "1" as value for the true branch. */
2713 ir_mode *const mode = mode_Is;
2714 true_val = new_Const(mode, get_mode_one(mode));
2717 mature_immBlock(true_block);
2718 mature_immBlock(false_block);
2720 /* create the common block */
2721 ir_node *in_cf[2] = { true_jmp, false_jmp };
2722 new_Block(2, in_cf);
2724 /* TODO improve static semantics, so either both or no values are NULL */
2725 if (true_val == NULL || false_val == NULL)
2728 ir_node *in[2] = { true_val, false_val };
2729 ir_mode *mode = get_irn_mode(true_val);
2730 assert(get_irn_mode(false_val) == mode);
2731 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2737 * Returns an IR-node representing the address of a field.
2739 static ir_node *select_addr(const select_expression_t *expression)
2741 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2743 construct_select_compound(expression);
2745 ir_node *compound_addr = expression_to_firm(expression->compound);
2747 entity_t *entry = expression->compound_entry;
2748 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2749 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2750 ir_entity *irentity = entry->compound_member.entity;
2752 assert(irentity != NULL);
2754 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2759 static ir_node *select_to_firm(const select_expression_t *expression)
2761 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2762 ir_node *addr = select_addr(expression);
2763 type_t *type = revert_automatic_type_conversion(
2764 (const expression_t*) expression);
2765 type = skip_typeref(type);
2767 entity_t *entry = expression->compound_entry;
2768 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2769 type_t *entry_type = skip_typeref(entry->declaration.type);
2771 if (entry_type->kind == TYPE_BITFIELD) {
2772 return bitfield_extract_to_firm(expression, addr);
2775 return deref_address(dbgi, type, addr);
2778 /* Values returned by __builtin_classify_type. */
2779 typedef enum gcc_type_class
2785 enumeral_type_class,
2788 reference_type_class,
2792 function_type_class,
2803 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2805 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2811 const atomic_type_t *const atomic_type = &type->atomic;
2812 switch (atomic_type->akind) {
2813 /* should not be reached */
2814 case ATOMIC_TYPE_INVALID:
2818 /* gcc cannot do that */
2819 case ATOMIC_TYPE_VOID:
2820 tc = void_type_class;
2823 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2824 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2825 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2826 case ATOMIC_TYPE_SHORT:
2827 case ATOMIC_TYPE_USHORT:
2828 case ATOMIC_TYPE_INT:
2829 case ATOMIC_TYPE_UINT:
2830 case ATOMIC_TYPE_LONG:
2831 case ATOMIC_TYPE_ULONG:
2832 case ATOMIC_TYPE_LONGLONG:
2833 case ATOMIC_TYPE_ULONGLONG:
2834 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2835 tc = integer_type_class;
2838 case ATOMIC_TYPE_FLOAT:
2839 case ATOMIC_TYPE_DOUBLE:
2840 case ATOMIC_TYPE_LONG_DOUBLE:
2841 tc = real_type_class;
2844 panic("Unexpected atomic type in classify_type_to_firm().");
2847 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2848 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2849 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2850 case TYPE_ARRAY: /* gcc handles this as pointer */
2851 case TYPE_FUNCTION: /* gcc handles this as pointer */
2852 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2853 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2854 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2856 /* gcc handles this as integer */
2857 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2860 /* typedef/typeof should be skipped already */
2867 panic("unexpected TYPE classify_type_to_firm().");
2870 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2871 ir_mode *const mode = mode_int;
2872 tarval *const tv = new_tarval_from_long(tc, mode);
2873 return new_d_Const(dbgi, mode, tv);
2876 static ir_node *function_name_to_firm(
2877 const funcname_expression_t *const expr)
2879 switch(expr->kind) {
2880 case FUNCNAME_FUNCTION:
2881 case FUNCNAME_PRETTY_FUNCTION:
2882 case FUNCNAME_FUNCDNAME:
2883 if (current_function_name == NULL) {
2884 const source_position_t *const src_pos = &expr->base.source_position;
2885 const char *name = current_function_entity->base.symbol->string;
2886 const string_t string = { name, strlen(name) + 1 };
2887 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2889 return current_function_name;
2890 case FUNCNAME_FUNCSIG:
2891 if (current_funcsig == NULL) {
2892 const source_position_t *const src_pos = &expr->base.source_position;
2893 ir_entity *ent = get_irg_entity(current_ir_graph);
2894 const char *const name = get_entity_ld_name(ent);
2895 const string_t string = { name, strlen(name) + 1 };
2896 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2898 return current_funcsig;
2900 panic("Unsupported function name");
2903 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2905 statement_t *statement = expr->statement;
2907 assert(statement->kind == STATEMENT_COMPOUND);
2908 return compound_statement_to_firm(&statement->compound);
2911 static ir_node *va_start_expression_to_firm(
2912 const va_start_expression_t *const expr)
2914 type_t *const type = current_function_entity->declaration.type;
2915 ir_type *const method_type = get_ir_type(type);
2916 int const n = get_method_n_params(method_type) - 1;
2917 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2918 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2919 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2920 ir_node *const no_mem = new_NoMem();
2921 ir_node *const arg_sel =
2922 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2924 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2925 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2926 set_value_for_expression(expr->ap, add);
2931 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2933 type_t *const type = expr->base.type;
2934 expression_t *const ap_expr = expr->ap;
2935 ir_node *const ap_addr = expression_to_addr(ap_expr);
2936 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2937 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2938 ir_node *const res = deref_address(dbgi, type, ap);
2940 ir_node *const cnst = get_type_size(expr->base.type);
2941 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2943 set_value_for_expression_addr(ap_expr, add, ap_addr);
2948 static ir_node *dereference_addr(const unary_expression_t *const expression)
2950 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2951 return expression_to_firm(expression->value);
2955 * Returns a IR-node representing an lvalue of the given expression.
2957 static ir_node *expression_to_addr(const expression_t *expression)
2959 switch(expression->kind) {
2960 case EXPR_REFERENCE:
2961 return reference_addr(&expression->reference);
2962 case EXPR_ARRAY_ACCESS:
2963 return array_access_addr(&expression->array_access);
2965 return select_addr(&expression->select);
2967 return call_expression_to_firm(&expression->call);
2968 case EXPR_UNARY_DEREFERENCE: {
2969 return dereference_addr(&expression->unary);
2974 panic("trying to get address of non-lvalue");
2977 static ir_node *builtin_constant_to_firm(
2978 const builtin_constant_expression_t *expression)
2980 ir_mode *mode = get_ir_mode(expression->base.type);
2983 if (is_constant_expression(expression->value)) {
2988 return new_Const_long(mode, v);
2991 static ir_node *builtin_prefetch_to_firm(
2992 const builtin_prefetch_expression_t *expression)
2994 ir_node *adr = expression_to_firm(expression->adr);
2995 /* no Firm support for prefetch yet */
3000 static ir_node *get_label_block(label_t *label)
3002 if (label->block != NULL)
3003 return label->block;
3005 /* beware: might be called from create initializer with current_ir_graph
3006 * set to const_code_irg. */
3007 ir_graph *rem = current_ir_graph;
3008 current_ir_graph = current_function;
3010 ir_node *old_cur_block = get_cur_block();
3011 ir_node *block = new_immBlock();
3012 set_cur_block(old_cur_block);
3014 label->block = block;
3016 ARR_APP1(label_t *, all_labels, label);
3018 current_ir_graph = rem;
3023 * Pointer to a label. This is used for the
3024 * GNU address-of-label extension.
3026 static ir_node *label_address_to_firm(
3027 const label_address_expression_t *label)
3029 ir_node *block = get_label_block(label->label);
3030 ir_label_t nr = get_Block_label(block);
3033 nr = get_irp_next_label_nr();
3034 set_Block_label(block, nr);
3036 symconst_symbol value;
3038 return new_SymConst(mode_P_code, value, symconst_label);
3042 * creates firm nodes for an expression. The difference between this function
3043 * and expression_to_firm is, that this version might produce mode_b nodes
3044 * instead of mode_Is.
3046 static ir_node *_expression_to_firm(const expression_t *expression)
3049 if (!constant_folding) {
3050 assert(!expression->base.transformed);
3051 ((expression_t*) expression)->base.transformed = true;
3055 switch (expression->kind) {
3056 case EXPR_CHARACTER_CONSTANT:
3057 return character_constant_to_firm(&expression->conste);
3058 case EXPR_WIDE_CHARACTER_CONSTANT:
3059 return wide_character_constant_to_firm(&expression->conste);
3061 return const_to_firm(&expression->conste);
3062 case EXPR_STRING_LITERAL:
3063 return string_literal_to_firm(&expression->string);
3064 case EXPR_WIDE_STRING_LITERAL:
3065 return wide_string_literal_to_firm(&expression->wide_string);
3066 case EXPR_REFERENCE:
3067 return reference_expression_to_firm(&expression->reference);
3068 case EXPR_REFERENCE_ENUM_VALUE:
3069 return reference_expression_enum_value_to_firm(&expression->reference);
3071 return call_expression_to_firm(&expression->call);
3073 return unary_expression_to_firm(&expression->unary);
3075 return binary_expression_to_firm(&expression->binary);
3076 case EXPR_ARRAY_ACCESS:
3077 return array_access_to_firm(&expression->array_access);
3079 return sizeof_to_firm(&expression->typeprop);
3081 return alignof_to_firm(&expression->typeprop);
3082 case EXPR_CONDITIONAL:
3083 return conditional_to_firm(&expression->conditional);
3085 return select_to_firm(&expression->select);
3086 case EXPR_CLASSIFY_TYPE:
3087 return classify_type_to_firm(&expression->classify_type);
3089 return function_name_to_firm(&expression->funcname);
3090 case EXPR_STATEMENT:
3091 return statement_expression_to_firm(&expression->statement);
3093 return va_start_expression_to_firm(&expression->va_starte);
3095 return va_arg_expression_to_firm(&expression->va_arge);
3096 case EXPR_BUILTIN_SYMBOL:
3097 panic("unimplemented expression found");
3098 case EXPR_BUILTIN_CONSTANT_P:
3099 return builtin_constant_to_firm(&expression->builtin_constant);
3100 case EXPR_BUILTIN_PREFETCH:
3101 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3103 return offsetof_to_firm(&expression->offsetofe);
3104 case EXPR_COMPOUND_LITERAL:
3105 return compound_literal_to_firm(&expression->compound_literal);
3106 case EXPR_LABEL_ADDRESS:
3107 return label_address_to_firm(&expression->label_address);
3113 panic("invalid expression found");
3116 static bool produces_mode_b(const expression_t *expression)
3118 switch (expression->kind) {
3119 case EXPR_BINARY_EQUAL:
3120 case EXPR_BINARY_NOTEQUAL:
3121 case EXPR_BINARY_LESS:
3122 case EXPR_BINARY_LESSEQUAL:
3123 case EXPR_BINARY_GREATER:
3124 case EXPR_BINARY_GREATEREQUAL:
3125 case EXPR_BINARY_ISGREATER:
3126 case EXPR_BINARY_ISGREATEREQUAL:
3127 case EXPR_BINARY_ISLESS:
3128 case EXPR_BINARY_ISLESSEQUAL:
3129 case EXPR_BINARY_ISLESSGREATER:
3130 case EXPR_BINARY_ISUNORDERED:
3131 case EXPR_UNARY_NOT:
3134 case EXPR_BINARY_BUILTIN_EXPECT:
3135 return produces_mode_b(expression->binary.left);
3136 case EXPR_BINARY_COMMA:
3137 return produces_mode_b(expression->binary.right);
3144 static ir_node *expression_to_firm(const expression_t *expression)
3146 if (!produces_mode_b(expression)) {
3147 ir_node *res = _expression_to_firm(expression);
3148 assert(res == NULL || get_irn_mode(res) != mode_b);
3152 if (is_constant_expression(expression)) {
3153 ir_node *res = _expression_to_firm(expression);
3154 ir_mode *mode = get_ir_mode(expression->base.type);
3155 assert(is_Const(res));
3156 if (is_Const_null(res)) {
3157 return new_Const_long(mode, 0);
3159 return new_Const_long(mode, 1);
3163 /* we have to produce a 0/1 from the mode_b expression */
3164 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3165 return produce_condition_result(expression, dbgi);
3169 * create a short-circuit expression evaluation that tries to construct
3170 * efficient control flow structures for &&, || and ! expressions
3172 static ir_node *create_condition_evaluation(const expression_t *expression,
3173 ir_node *true_block,
3174 ir_node *false_block)
3176 switch(expression->kind) {
3177 case EXPR_UNARY_NOT: {
3178 const unary_expression_t *unary_expression = &expression->unary;
3179 create_condition_evaluation(unary_expression->value, false_block,
3183 case EXPR_BINARY_LOGICAL_AND: {
3184 const binary_expression_t *binary_expression = &expression->binary;
3186 ir_node *cur_block = get_cur_block();
3187 ir_node *extra_block = new_immBlock();
3188 set_cur_block(cur_block);
3189 create_condition_evaluation(binary_expression->left, extra_block,
3191 mature_immBlock(extra_block);
3192 set_cur_block(extra_block);
3193 create_condition_evaluation(binary_expression->right, true_block,
3197 case EXPR_BINARY_LOGICAL_OR: {
3198 const binary_expression_t *binary_expression = &expression->binary;
3200 ir_node *cur_block = get_cur_block();
3201 ir_node *extra_block = new_immBlock();
3202 set_cur_block(cur_block);
3203 create_condition_evaluation(binary_expression->left, true_block,
3205 mature_immBlock(extra_block);
3206 set_cur_block(extra_block);
3207 create_condition_evaluation(binary_expression->right, true_block,
3215 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3216 ir_node *cond_expr = _expression_to_firm(expression);
3217 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3218 ir_node *cond = new_d_Cond(dbgi, condition);
3219 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3220 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3222 /* set branch prediction info based on __builtin_expect */
3223 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3224 long cnst = fold_constant(expression->binary.right);
3225 cond_jmp_predicate pred;
3228 pred = COND_JMP_PRED_FALSE;
3230 pred = COND_JMP_PRED_TRUE;
3232 set_Cond_jmp_pred(cond, pred);
3235 add_immBlock_pred(true_block, true_proj);
3236 if (false_block != NULL) {
3237 add_immBlock_pred(false_block, false_proj);
3240 set_cur_block(NULL);
3245 static void create_variable_entity(entity_t *variable,
3246 declaration_kind_t declaration_kind,
3247 ir_type *parent_type)
3249 assert(variable->kind == ENTITY_VARIABLE);
3250 type_t *const type = skip_typeref(variable->declaration.type);
3251 ident *const id = new_id_from_str(variable->base.symbol->string);
3252 ir_type *const irtype = get_ir_type(type);
3253 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3254 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3256 handle_gnu_attributes_ent(irentity, variable);
3258 variable->declaration.kind = (unsigned char) declaration_kind;
3259 variable->variable.v.entity = irentity;
3260 set_entity_variability(irentity, variability_uninitialized);
3261 set_entity_ld_ident(irentity, create_ld_ident(variable));
3262 if (parent_type == get_tls_type())
3263 set_entity_allocation(irentity, allocation_automatic);
3264 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3265 set_entity_allocation(irentity, allocation_static);
3267 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3268 set_entity_volatility(irentity, volatility_is_volatile);
3273 typedef struct type_path_entry_t type_path_entry_t;
3274 struct type_path_entry_t {
3276 ir_initializer_t *initializer;
3278 entity_t *compound_entry;
3281 typedef struct type_path_t type_path_t;
3282 struct type_path_t {
3283 type_path_entry_t *path;
3288 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3290 size_t len = ARR_LEN(path->path);
3292 for (size_t i = 0; i < len; ++i) {
3293 const type_path_entry_t *entry = & path->path[i];
3295 type_t *type = skip_typeref(entry->type);
3296 if (is_type_compound(type)) {
3297 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3298 } else if (is_type_array(type)) {
3299 fprintf(stderr, "[%zu]", entry->index);
3301 fprintf(stderr, "-INVALID-");
3304 fprintf(stderr, " (");
3305 print_type(path->top_type);
3306 fprintf(stderr, ")");
3309 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3311 size_t len = ARR_LEN(path->path);
3313 return & path->path[len-1];
3316 static type_path_entry_t *append_to_type_path(type_path_t *path)
3318 size_t len = ARR_LEN(path->path);
3319 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3321 type_path_entry_t *result = & path->path[len];
3322 memset(result, 0, sizeof(result[0]));
3326 static size_t get_compound_member_count(const compound_type_t *type)
3328 compound_t *compound = type->compound;
3329 size_t n_members = 0;
3330 entity_t *member = compound->members.entities;
3331 for ( ; member != NULL; member = member->base.next) {
3338 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3340 type_t *orig_top_type = path->top_type;
3341 type_t *top_type = skip_typeref(orig_top_type);
3343 assert(is_type_compound(top_type) || is_type_array(top_type));
3345 if (ARR_LEN(path->path) == 0) {
3348 type_path_entry_t *top = get_type_path_top(path);
3349 ir_initializer_t *initializer = top->initializer;
3350 return get_initializer_compound_value(initializer, top->index);
3354 static void descend_into_subtype(type_path_t *path)
3356 type_t *orig_top_type = path->top_type;
3357 type_t *top_type = skip_typeref(orig_top_type);
3359 assert(is_type_compound(top_type) || is_type_array(top_type));
3361 ir_initializer_t *initializer = get_initializer_entry(path);
3363 type_path_entry_t *top = append_to_type_path(path);
3364 top->type = top_type;
3368 if (is_type_compound(top_type)) {
3369 compound_t *compound = top_type->compound.compound;
3370 entity_t *entry = compound->members.entities;
3372 top->compound_entry = entry;
3374 len = get_compound_member_count(&top_type->compound);
3375 if (entry != NULL) {
3376 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3377 path->top_type = entry->declaration.type;
3380 assert(is_type_array(top_type));
3381 assert(top_type->array.size > 0);
3384 path->top_type = top_type->array.element_type;
3385 len = top_type->array.size;
3387 if (initializer == NULL
3388 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3389 initializer = create_initializer_compound(len);
3390 /* we have to set the entry at the 2nd latest path entry... */
3391 size_t path_len = ARR_LEN(path->path);
3392 assert(path_len >= 1);
3394 type_path_entry_t *entry = & path->path[path_len-2];
3395 ir_initializer_t *tinitializer = entry->initializer;
3396 set_initializer_compound_value(tinitializer, entry->index,
3400 top->initializer = initializer;
3403 static void ascend_from_subtype(type_path_t *path)
3405 type_path_entry_t *top = get_type_path_top(path);
3407 path->top_type = top->type;
3409 size_t len = ARR_LEN(path->path);
3410 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3413 static void walk_designator(type_path_t *path, const designator_t *designator)
3415 /* designators start at current object type */
3416 ARR_RESIZE(type_path_entry_t, path->path, 1);
3418 for ( ; designator != NULL; designator = designator->next) {
3419 type_path_entry_t *top = get_type_path_top(path);
3420 type_t *orig_type = top->type;
3421 type_t *type = skip_typeref(orig_type);
3423 if (designator->symbol != NULL) {
3424 assert(is_type_compound(type));
3426 symbol_t *symbol = designator->symbol;
3428 compound_t *compound = type->compound.compound;
3429 entity_t *iter = compound->members.entities;
3430 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3431 if (iter->base.symbol == symbol) {
3432 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3436 assert(iter != NULL);
3438 top->type = orig_type;
3439 top->compound_entry = iter;
3441 orig_type = iter->declaration.type;
3443 expression_t *array_index = designator->array_index;
3444 assert(designator->array_index != NULL);
3445 assert(is_type_array(type));
3447 long index = fold_constant(array_index);
3450 if (type->array.size_constant) {
3451 long array_size = type->array.size;
3452 assert(index < array_size);
3456 top->type = orig_type;
3457 top->index = (size_t) index;
3458 orig_type = type->array.element_type;
3460 path->top_type = orig_type;
3462 if (designator->next != NULL) {
3463 descend_into_subtype(path);
3467 path->invalid = false;
3470 static void advance_current_object(type_path_t *path)
3472 if (path->invalid) {
3473 /* TODO: handle this... */
3474 panic("invalid initializer in ast2firm (excessive elements)");
3478 type_path_entry_t *top = get_type_path_top(path);
3480 type_t *type = skip_typeref(top->type);
3481 if (is_type_union(type)) {
3482 top->compound_entry = NULL;
3483 } else if (is_type_struct(type)) {
3484 entity_t *entry = top->compound_entry;
3487 entry = entry->base.next;
3488 top->compound_entry = entry;
3489 if (entry != NULL) {
3490 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3491 path->top_type = entry->declaration.type;
3495 assert(is_type_array(type));
3498 if (!type->array.size_constant || top->index < type->array.size) {
3503 /* we're past the last member of the current sub-aggregate, try if we
3504 * can ascend in the type hierarchy and continue with another subobject */
3505 size_t len = ARR_LEN(path->path);
3508 ascend_from_subtype(path);
3509 advance_current_object(path);
3511 path->invalid = true;
3516 static ir_initializer_t *create_ir_initializer(
3517 const initializer_t *initializer, type_t *type);
3519 static ir_initializer_t *create_ir_initializer_value(
3520 const initializer_value_t *initializer)
3522 if (is_type_compound(initializer->value->base.type)) {
3523 panic("initializer creation for compounds not implemented yet");
3525 ir_node *value = expression_to_firm(initializer->value);
3526 return create_initializer_const(value);
3529 /** test wether type can be initialized by a string constant */
3530 static bool is_string_type(type_t *type)
3533 if (is_type_pointer(type)) {
3534 inner = skip_typeref(type->pointer.points_to);
3535 } else if(is_type_array(type)) {
3536 inner = skip_typeref(type->array.element_type);
3541 return is_type_integer(inner);
3544 static ir_initializer_t *create_ir_initializer_list(
3545 const initializer_list_t *initializer, type_t *type)
3548 memset(&path, 0, sizeof(path));
3549 path.top_type = type;
3550 path.path = NEW_ARR_F(type_path_entry_t, 0);
3552 descend_into_subtype(&path);
3554 for (size_t i = 0; i < initializer->len; ++i) {
3555 const initializer_t *sub_initializer = initializer->initializers[i];
3557 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3558 walk_designator(&path, sub_initializer->designator.designator);
3562 if (sub_initializer->kind == INITIALIZER_VALUE) {
3563 /* we might have to descend into types until we're at a scalar
3566 type_t *orig_top_type = path.top_type;
3567 type_t *top_type = skip_typeref(orig_top_type);
3569 if (is_type_scalar(top_type))
3571 descend_into_subtype(&path);
3573 } else if (sub_initializer->kind == INITIALIZER_STRING
3574 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
3575 /* we might have to descend into types until we're at a scalar
3578 type_t *orig_top_type = path.top_type;
3579 type_t *top_type = skip_typeref(orig_top_type);
3581 if (is_string_type(top_type))
3583 descend_into_subtype(&path);
3587 ir_initializer_t *sub_irinitializer
3588 = create_ir_initializer(sub_initializer, path.top_type);
3590 size_t path_len = ARR_LEN(path.path);
3591 assert(path_len >= 1);
3592 type_path_entry_t *entry = & path.path[path_len-1];
3593 ir_initializer_t *tinitializer = entry->initializer;
3594 set_initializer_compound_value(tinitializer, entry->index,
3597 advance_current_object(&path);
3600 assert(ARR_LEN(path.path) >= 1);
3601 ir_initializer_t *result = path.path[0].initializer;
3602 DEL_ARR_F(path.path);
3607 static ir_initializer_t *create_ir_initializer_string(
3608 const initializer_string_t *initializer, type_t *type)
3610 type = skip_typeref(type);
3612 size_t string_len = initializer->string.size;
3613 assert(type->kind == TYPE_ARRAY);
3614 assert(type->array.size_constant);
3615 size_t len = type->array.size;
3616 ir_initializer_t *irinitializer = create_initializer_compound(len);
3618 const char *string = initializer->string.begin;
3619 ir_mode *mode = get_ir_mode(type->array.element_type);
3621 for (size_t i = 0; i < len; ++i) {
3626 tarval *tv = new_tarval_from_long(c, mode);
3627 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3629 set_initializer_compound_value(irinitializer, i, char_initializer);
3632 return irinitializer;
3635 static ir_initializer_t *create_ir_initializer_wide_string(
3636 const initializer_wide_string_t *initializer, type_t *type)
3638 size_t string_len = initializer->string.size;
3639 assert(type->kind == TYPE_ARRAY);
3640 assert(type->array.size_constant);
3641 size_t len = type->array.size;
3642 ir_initializer_t *irinitializer = create_initializer_compound(len);
3644 const wchar_rep_t *string = initializer->string.begin;
3645 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3647 for (size_t i = 0; i < len; ++i) {
3649 if (i < string_len) {
3652 tarval *tv = new_tarval_from_long(c, mode);
3653 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3655 set_initializer_compound_value(irinitializer, i, char_initializer);
3658 return irinitializer;
3661 static ir_initializer_t *create_ir_initializer(
3662 const initializer_t *initializer, type_t *type)
3664 switch(initializer->kind) {
3665 case INITIALIZER_STRING:
3666 return create_ir_initializer_string(&initializer->string, type);
3668 case INITIALIZER_WIDE_STRING:
3669 return create_ir_initializer_wide_string(&initializer->wide_string,
3672 case INITIALIZER_LIST:
3673 return create_ir_initializer_list(&initializer->list, type);
3675 case INITIALIZER_VALUE:
3676 return create_ir_initializer_value(&initializer->value);
3678 case INITIALIZER_DESIGNATOR:
3679 panic("unexpected designator initializer found");
3681 panic("unknown initializer");
3684 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3687 if (is_atomic_type(type)) {
3688 ir_mode *mode = get_type_mode(type);
3689 tarval *zero = get_mode_null(mode);
3690 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3692 /* TODO: bitfields */
3693 ir_node *mem = get_store();
3694 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3695 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3698 assert(is_compound_type(type));
3701 if (is_Array_type(type)) {
3702 assert(has_array_upper_bound(type, 0));
3703 n_members = get_array_upper_bound_int(type, 0);
3705 n_members = get_compound_n_members(type);
3708 for (int i = 0; i < n_members; ++i) {
3711 if (is_Array_type(type)) {
3712 ir_entity *entity = get_array_element_entity(type);
3713 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3714 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3715 ir_node *in[1] = { cnst };
3716 irtype = get_array_element_type(type);
3717 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3719 ir_entity *member = get_compound_member(type, i);
3721 irtype = get_entity_type(member);
3722 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3725 create_dynamic_null_initializer(irtype, dbgi, addr);
3730 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3731 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3733 switch(get_initializer_kind(initializer)) {
3734 case IR_INITIALIZER_NULL: {
3735 create_dynamic_null_initializer(type, dbgi, base_addr);
3738 case IR_INITIALIZER_CONST: {
3739 ir_node *node = get_initializer_const_value(initializer);
3740 ir_mode *mode = get_irn_mode(node);
3741 ir_type *ent_type = get_entity_type(entity);
3743 /* is it a bitfield type? */
3744 if (is_Primitive_type(ent_type) &&
3745 get_primitive_base_type(ent_type) != NULL) {
3746 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3750 assert(get_type_mode(type) == mode);
3751 ir_node *mem = get_store();
3752 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3753 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3757 case IR_INITIALIZER_TARVAL: {
3758 tarval *tv = get_initializer_tarval_value(initializer);
3759 ir_mode *mode = get_tarval_mode(tv);
3760 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3761 ir_type *ent_type = get_entity_type(entity);
3763 /* is it a bitfield type? */
3764 if (is_Primitive_type(ent_type) &&
3765 get_primitive_base_type(ent_type) != NULL) {
3766 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3770 assert(get_type_mode(type) == mode);
3771 ir_node *mem = get_store();
3772 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3773 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3777 case IR_INITIALIZER_COMPOUND: {
3778 assert(is_compound_type(type));
3780 if (is_Array_type(type)) {
3781 assert(has_array_upper_bound(type, 0));
3782 n_members = get_array_upper_bound_int(type, 0);
3784 n_members = get_compound_n_members(type);
3787 if (get_initializer_compound_n_entries(initializer)
3788 != (unsigned) n_members)
3789 panic("initializer doesn't match compound type");
3791 for (int i = 0; i < n_members; ++i) {
3794 ir_entity *sub_entity;
3795 if (is_Array_type(type)) {
3796 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3797 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3798 ir_node *in[1] = { cnst };
3799 irtype = get_array_element_type(type);
3800 sub_entity = get_array_element_entity(type);
3801 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3804 sub_entity = get_compound_member(type, i);
3805 irtype = get_entity_type(sub_entity);
3806 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3810 ir_initializer_t *sub_init
3811 = get_initializer_compound_value(initializer, i);
3813 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3820 panic("invalid IR_INITIALIZER found");
3823 static void create_dynamic_initializer(ir_initializer_t *initializer,
3824 dbg_info *dbgi, ir_entity *entity)
3826 ir_node *frame = get_local_frame(entity);
3827 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3828 ir_type *type = get_entity_type(entity);
3830 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3833 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3834 ir_entity *entity, type_t *type)
3836 ir_node *memory = get_store();
3837 ir_node *nomem = new_NoMem();
3838 ir_node *frame = get_irg_frame(current_ir_graph);
3839 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3841 if (initializer->kind == INITIALIZER_VALUE) {
3842 initializer_value_t *initializer_value = &initializer->value;
3844 ir_node *value = expression_to_firm(initializer_value->value);
3845 type = skip_typeref(type);
3846 assign_value(dbgi, addr, type, value);
3850 if (!is_constant_initializer(initializer)) {
3851 ir_initializer_t *irinitializer
3852 = create_ir_initializer(initializer, type);
3854 create_dynamic_initializer(irinitializer, dbgi, entity);
3858 /* create the ir_initializer */
3859 ir_graph *const old_current_ir_graph = current_ir_graph;
3860 current_ir_graph = get_const_code_irg();
3862 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3864 assert(current_ir_graph == get_const_code_irg());
3865 current_ir_graph = old_current_ir_graph;
3867 /* create a "template" entity which is copied to the entity on the stack */
3868 ident *const id = id_unique("initializer.%u");
3869 ir_type *const irtype = get_ir_type(type);
3870 ir_type *const global_type = get_glob_type();
3871 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3872 set_entity_ld_ident(init_entity, id);
3874 set_entity_variability(init_entity, variability_initialized);
3875 set_entity_visibility(init_entity, visibility_local);
3876 set_entity_allocation(init_entity, allocation_static);
3878 set_entity_initializer(init_entity, irinitializer);
3880 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3881 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3883 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3884 set_store(copyb_mem);
3887 static void create_initializer_local_variable_entity(entity_t *entity)
3889 assert(entity->kind == ENTITY_VARIABLE);
3890 initializer_t *initializer = entity->variable.initializer;
3891 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3892 ir_entity *irentity = entity->variable.v.entity;
3893 type_t *type = entity->declaration.type;
3894 create_local_initializer(initializer, dbgi, irentity, type);
3897 static void create_variable_initializer(entity_t *entity)
3899 assert(entity->kind == ENTITY_VARIABLE);
3900 initializer_t *initializer = entity->variable.initializer;
3901 if (initializer == NULL)
3904 declaration_kind_t declaration_kind
3905 = (declaration_kind_t) entity->declaration.kind;
3906 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3907 create_initializer_local_variable_entity(entity);
3911 type_t *type = entity->declaration.type;
3912 type_qualifiers_t tq = get_type_qualifier(type, true);
3914 if (initializer->kind == INITIALIZER_VALUE) {
3915 initializer_value_t *initializer_value = &initializer->value;
3916 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3918 ir_node *value = expression_to_firm(initializer_value->value);
3919 value = do_strict_conv(dbgi, value);
3921 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3922 set_value(entity->variable.v.value_number, value);
3924 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3926 ir_entity *irentity = entity->variable.v.entity;
3928 if (tq & TYPE_QUALIFIER_CONST) {
3929 set_entity_variability(irentity, variability_constant);
3931 set_entity_variability(irentity, variability_initialized);
3933 set_atomic_ent_value(irentity, value);
3936 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3937 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3939 ir_entity *irentity = entity->variable.v.entity;
3940 ir_initializer_t *irinitializer
3941 = create_ir_initializer(initializer, type);
3943 if (tq & TYPE_QUALIFIER_CONST) {
3944 set_entity_variability(irentity, variability_constant);
3946 set_entity_variability(irentity, variability_initialized);
3948 set_entity_initializer(irentity, irinitializer);
3952 static void create_variable_length_array(entity_t *entity)
3954 assert(entity->kind == ENTITY_VARIABLE);
3955 assert(entity->variable.initializer == NULL);
3957 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3958 entity->variable.v.vla_base = NULL;
3960 /* TODO: record VLA somewhere so we create the free node when we leave
3964 static void allocate_variable_length_array(entity_t *entity)
3966 assert(entity->kind == ENTITY_VARIABLE);
3967 assert(entity->variable.initializer == NULL);
3968 assert(get_cur_block() != NULL);
3970 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3971 type_t *type = entity->declaration.type;
3972 ir_type *el_type = get_ir_type(type->array.element_type);
3974 /* make sure size_node is calculated */
3975 get_type_size(type);
3976 ir_node *elems = type->array.size_node;
3977 ir_node *mem = get_store();
3978 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3980 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3981 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3984 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3985 entity->variable.v.vla_base = addr;
3989 * Creates a Firm local variable from a declaration.
3991 static void create_local_variable(entity_t *entity)
3993 assert(entity->kind == ENTITY_VARIABLE);
3994 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
3996 bool needs_entity = entity->variable.address_taken;
3997 type_t *type = skip_typeref(entity->declaration.type);
3999 /* is it a variable length array? */
4000 if (is_type_array(type) && !type->array.size_constant) {
4001 create_variable_length_array(entity);
4003 } else if (is_type_array(type) || is_type_compound(type)) {
4004 needs_entity = true;
4005 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4006 needs_entity = true;
4010 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4011 create_variable_entity(entity,
4012 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4015 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4016 entity->variable.v.value_number = next_value_number_function;
4017 set_irg_loc_description(current_ir_graph, next_value_number_function,
4018 (variable_t*) &entity->variable);
4019 ++next_value_number_function;
4023 static void create_local_static_variable(entity_t *entity)
4025 assert(entity->kind == ENTITY_VARIABLE);
4026 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4028 type_t *const type = skip_typeref(entity->declaration.type);
4029 ir_type *const global_type = get_glob_type();
4030 ir_type *const irtype = get_ir_type(type);
4031 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4033 size_t l = strlen(entity->base.symbol->string);
4034 char buf[l + sizeof(".%u")];
4035 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4036 ident *const id = id_unique(buf);
4038 ir_entity *const irentity = new_d_entity(global_type, id, irtype, dbgi);
4040 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4041 set_entity_volatility(irentity, volatility_is_volatile);
4044 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4045 entity->variable.v.entity = irentity;
4046 set_entity_ld_ident(irentity, id);
4047 set_entity_variability(irentity, variability_uninitialized);
4048 set_entity_visibility(irentity, visibility_local);
4049 set_entity_allocation(irentity, allocation_static);
4051 ir_graph *const old_current_ir_graph = current_ir_graph;
4052 current_ir_graph = get_const_code_irg();
4054 create_variable_initializer(entity);
4056 assert(current_ir_graph == get_const_code_irg());
4057 current_ir_graph = old_current_ir_graph;
4062 static void return_statement_to_firm(return_statement_t *statement)
4064 if (get_cur_block() == NULL)
4067 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4068 type_t *type = current_function_entity->declaration.type;
4069 ir_type *func_irtype = get_ir_type(type);
4074 if (get_method_n_ress(func_irtype) > 0) {
4075 ir_type *res_type = get_method_res_type(func_irtype, 0);
4077 if (statement->value != NULL) {
4078 ir_node *node = expression_to_firm(statement->value);
4079 node = do_strict_conv(dbgi, node);
4083 if (is_compound_type(res_type)) {
4086 mode = get_type_mode(res_type);
4088 in[0] = new_Unknown(mode);
4092 /* build return_value for its side effects */
4093 if (statement->value != NULL) {
4094 expression_to_firm(statement->value);
4099 ir_node *store = get_store();
4100 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4102 ir_node *end_block = get_irg_end_block(current_ir_graph);
4103 add_immBlock_pred(end_block, ret);
4105 set_cur_block(NULL);
4108 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4110 if (get_cur_block() == NULL)
4113 return expression_to_firm(statement->expression);
4116 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4118 entity_t *entity = compound->scope.entities;
4119 for ( ; entity != NULL; entity = entity->base.next) {
4120 if (!is_declaration(entity))
4123 create_local_declaration(entity);
4126 ir_node *result = NULL;
4127 statement_t *statement = compound->statements;
4128 for ( ; statement != NULL; statement = statement->base.next) {
4129 if (statement->base.next == NULL
4130 && statement->kind == STATEMENT_EXPRESSION) {
4131 result = expression_statement_to_firm(
4132 &statement->expression);
4135 statement_to_firm(statement);
4141 static void create_global_variable(entity_t *entity)
4143 assert(entity->kind == ENTITY_VARIABLE);
4147 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4148 case STORAGE_CLASS_STATIC:
4149 vis = visibility_local;
4152 case STORAGE_CLASS_EXTERN:
4153 vis = visibility_external_allocated;
4156 case STORAGE_CLASS_NONE:
4157 vis = visibility_external_visible;
4160 case STORAGE_CLASS_THREAD:
4161 vis = visibility_external_visible;
4164 case STORAGE_CLASS_THREAD_EXTERN:
4165 vis = visibility_external_allocated;
4168 case STORAGE_CLASS_THREAD_STATIC:
4169 vis = visibility_local;
4173 var_type = get_tls_type();
4177 var_type = get_glob_type();
4181 create_variable_entity(entity,
4182 DECLARATION_KIND_GLOBAL_VARIABLE,
4184 /* Matze: I'm confused, shouldn't we only be here when creating
4187 if (!is_type_function(skip_typeref(entity->declaration.type))) {
4188 set_entity_visibility(declaration->v.entity, vis);
4191 set_entity_visibility(entity->variable.v.entity, vis);
4196 case STORAGE_CLASS_TYPEDEF:
4197 case STORAGE_CLASS_AUTO:
4198 case STORAGE_CLASS_REGISTER:
4201 panic("Invalid storage class for global variable");
4204 static void create_local_declaration(entity_t *entity)
4206 assert(is_declaration(entity));
4208 /* construct type */
4209 (void) get_ir_type(entity->declaration.type);
4210 if (entity->base.symbol == NULL) {
4214 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4215 case STORAGE_CLASS_STATIC:
4216 create_local_static_variable(entity);
4218 case STORAGE_CLASS_EXTERN:
4219 if (entity->kind == ENTITY_FUNCTION) {
4220 assert(entity->function.statement == NULL);
4221 get_function_entity(entity);
4223 create_global_variable(entity);
4224 create_variable_initializer(entity);
4227 case STORAGE_CLASS_NONE:
4228 case STORAGE_CLASS_AUTO:
4229 case STORAGE_CLASS_REGISTER:
4230 if (entity->kind == ENTITY_FUNCTION) {
4231 if (entity->function.statement != NULL) {
4232 get_function_entity(entity);
4233 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4234 enqueue_inner_function(entity);
4236 get_function_entity(entity);
4239 create_local_variable(entity);
4242 case STORAGE_CLASS_TYPEDEF:
4243 case STORAGE_CLASS_THREAD:
4244 case STORAGE_CLASS_THREAD_EXTERN:
4245 case STORAGE_CLASS_THREAD_STATIC:
4248 panic("invalid storage class found");
4251 static void initialize_local_declaration(entity_t *entity)
4253 if (entity->base.symbol == NULL)
4256 switch ((declaration_kind_t) entity->declaration.kind) {
4257 case DECLARATION_KIND_LOCAL_VARIABLE:
4258 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4259 create_variable_initializer(entity);
4262 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4263 allocate_variable_length_array(entity);
4266 case DECLARATION_KIND_COMPOUND_MEMBER:
4267 case DECLARATION_KIND_GLOBAL_VARIABLE:
4268 case DECLARATION_KIND_FUNCTION:
4269 case DECLARATION_KIND_INNER_FUNCTION:
4272 case DECLARATION_KIND_UNKNOWN:
4273 panic("can't initialize unknown declaration");
4275 panic("invalid declaration kind");
4278 static void declaration_statement_to_firm(declaration_statement_t *statement)
4280 entity_t *entity = statement->declarations_begin;
4281 entity_t *end = statement->declarations_end->base.next;
4282 for ( ; entity != end; entity = entity->base.next) {
4283 if (!is_declaration(entity))
4285 initialize_local_declaration(entity);
4289 static void if_statement_to_firm(if_statement_t *statement)
4291 ir_node *cur_block = get_cur_block();
4293 ir_node *fallthrough_block = NULL;
4295 /* the true (blocks) */
4296 ir_node *true_block = NULL;
4297 if (statement->true_statement != NULL) {
4298 true_block = new_immBlock();
4299 statement_to_firm(statement->true_statement);
4300 if (get_cur_block() != NULL) {
4301 ir_node *jmp = new_Jmp();
4302 if (fallthrough_block == NULL)
4303 fallthrough_block = new_immBlock();
4304 add_immBlock_pred(fallthrough_block, jmp);
4308 /* the false (blocks) */
4309 ir_node *false_block = NULL;
4310 if (statement->false_statement != NULL) {
4311 false_block = new_immBlock();
4313 statement_to_firm(statement->false_statement);
4314 if (get_cur_block() != NULL) {
4315 ir_node *jmp = new_Jmp();
4316 if (fallthrough_block == NULL)
4317 fallthrough_block = new_immBlock();
4318 add_immBlock_pred(fallthrough_block, jmp);
4322 /* create the condition */
4323 if (cur_block != NULL) {
4324 if (true_block == NULL || false_block == NULL) {
4325 if (fallthrough_block == NULL)
4326 fallthrough_block = new_immBlock();
4327 if (true_block == NULL)
4328 true_block = fallthrough_block;
4329 if (false_block == NULL)
4330 false_block = fallthrough_block;
4333 set_cur_block(cur_block);
4334 create_condition_evaluation(statement->condition, true_block,
4338 mature_immBlock(true_block);
4339 if (false_block != fallthrough_block && false_block != NULL) {
4340 mature_immBlock(false_block);
4342 if (fallthrough_block != NULL) {
4343 mature_immBlock(fallthrough_block);
4346 set_cur_block(fallthrough_block);
4349 static void while_statement_to_firm(while_statement_t *statement)
4351 ir_node *jmp = NULL;
4352 if (get_cur_block() != NULL) {
4356 /* create the header block */
4357 ir_node *header_block = new_immBlock();
4359 add_immBlock_pred(header_block, jmp);
4363 ir_node *old_continue_label = continue_label;
4364 ir_node *old_break_label = break_label;
4365 continue_label = header_block;
4368 ir_node *body_block = new_immBlock();
4369 statement_to_firm(statement->body);
4370 ir_node *false_block = break_label;
4372 assert(continue_label == header_block);
4373 continue_label = old_continue_label;
4374 break_label = old_break_label;
4376 if (get_cur_block() != NULL) {
4378 add_immBlock_pred(header_block, jmp);
4381 /* shortcut for while(true) */
4382 if (is_constant_expression(statement->condition)
4383 && fold_constant(statement->condition) != 0) {
4384 set_cur_block(header_block);
4385 ir_node *header_jmp = new_Jmp();
4386 add_immBlock_pred(body_block, header_jmp);
4388 keep_alive(body_block);
4389 keep_all_memory(body_block);
4390 set_cur_block(body_block);
4392 if (false_block == NULL) {
4393 false_block = new_immBlock();
4396 /* create the condition */
4397 set_cur_block(header_block);
4399 create_condition_evaluation(statement->condition, body_block,
4403 mature_immBlock(body_block);
4404 mature_immBlock(header_block);
4405 if (false_block != NULL) {
4406 mature_immBlock(false_block);
4409 set_cur_block(false_block);
4412 static void do_while_statement_to_firm(do_while_statement_t *statement)
4414 ir_node *jmp = NULL;
4415 if (get_cur_block() != NULL) {
4419 /* create the header block */
4420 ir_node *header_block = new_immBlock();
4423 ir_node *body_block = new_immBlock();
4425 add_immBlock_pred(body_block, jmp);
4428 ir_node *old_continue_label = continue_label;
4429 ir_node *old_break_label = break_label;
4430 continue_label = header_block;
4433 statement_to_firm(statement->body);
4434 ir_node *false_block = break_label;
4436 assert(continue_label == header_block);
4437 continue_label = old_continue_label;
4438 break_label = old_break_label;
4440 if (get_cur_block() != NULL) {
4441 ir_node *body_jmp = new_Jmp();
4442 add_immBlock_pred(header_block, body_jmp);
4443 mature_immBlock(header_block);
4446 if (false_block == NULL) {
4447 false_block = new_immBlock();
4450 /* create the condition */
4451 set_cur_block(header_block);
4453 create_condition_evaluation(statement->condition, body_block, false_block);
4454 mature_immBlock(body_block);
4455 mature_immBlock(header_block);
4456 if (false_block != NULL) {
4457 mature_immBlock(false_block);
4460 set_cur_block(false_block);
4463 static void for_statement_to_firm(for_statement_t *statement)
4465 ir_node *jmp = NULL;
4467 /* create declarations */
4468 entity_t *entity = statement->scope.entities;
4469 for ( ; entity != NULL; entity = entity->base.next) {
4470 if (!is_declaration(entity))
4473 create_local_declaration(entity);
4476 if (get_cur_block() != NULL) {
4477 entity = statement->scope.entities;
4478 for ( ; entity != NULL; entity = entity->base.next) {
4479 if (!is_declaration(entity))
4482 initialize_local_declaration(entity);
4485 if (statement->initialisation != NULL) {
4486 expression_to_firm(statement->initialisation);
4493 /* create the step block */
4494 ir_node *const step_block = new_immBlock();
4495 if (statement->step != NULL) {
4496 expression_to_firm(statement->step);
4498 ir_node *const step_jmp = new_Jmp();
4500 /* create the header block */
4501 ir_node *const header_block = new_immBlock();
4503 add_immBlock_pred(header_block, jmp);
4505 add_immBlock_pred(header_block, step_jmp);
4507 /* the false block */
4508 ir_node *const false_block = new_immBlock();
4511 ir_node * body_block;
4512 if (statement->body != NULL) {
4513 ir_node *const old_continue_label = continue_label;
4514 ir_node *const old_break_label = break_label;
4515 continue_label = step_block;
4516 break_label = false_block;
4518 body_block = new_immBlock();
4519 statement_to_firm(statement->body);
4521 assert(continue_label == step_block);
4522 assert(break_label == false_block);
4523 continue_label = old_continue_label;
4524 break_label = old_break_label;
4526 if (get_cur_block() != NULL) {
4528 add_immBlock_pred(step_block, jmp);
4531 body_block = step_block;
4534 /* create the condition */
4535 set_cur_block(header_block);
4536 if (statement->condition != NULL) {
4537 create_condition_evaluation(statement->condition, body_block,
4540 keep_alive(header_block);
4541 keep_all_memory(header_block);
4543 add_immBlock_pred(body_block, jmp);
4546 mature_immBlock(body_block);
4547 mature_immBlock(false_block);
4548 mature_immBlock(step_block);
4549 mature_immBlock(header_block);
4550 mature_immBlock(false_block);
4552 set_cur_block(false_block);
4555 static void create_jump_statement(const statement_t *statement,
4556 ir_node *target_block)
4558 if (get_cur_block() == NULL)
4561 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4562 ir_node *jump = new_d_Jmp(dbgi);
4563 add_immBlock_pred(target_block, jump);
4565 set_cur_block(NULL);
4568 static ir_node *get_break_label(void)
4570 if (break_label == NULL) {
4571 ir_node *cur_block = get_cur_block();
4572 break_label = new_immBlock();
4573 set_cur_block(cur_block);
4578 static void switch_statement_to_firm(switch_statement_t *statement)
4580 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4582 ir_node *expression = expression_to_firm(statement->expression);
4583 ir_node *cond = new_d_Cond(dbgi, expression);
4585 set_cur_block(NULL);
4587 ir_node *const old_switch_cond = current_switch_cond;
4588 ir_node *const old_break_label = break_label;
4589 const bool old_saw_default_label = saw_default_label;
4590 saw_default_label = false;
4591 current_switch_cond = cond;
4593 switch_statement_t *const old_switch = current_switch;
4594 current_switch = statement;
4596 /* determine a free number for the default label */
4597 unsigned long num_cases = 0;
4599 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4600 if (l->expression == NULL) {
4604 if (l->last_case >= l->first_case)
4605 num_cases += l->last_case - l->first_case + 1;
4606 if (l->last_case > def_nr)
4607 def_nr = l->last_case;
4610 if (def_nr == INT_MAX) {
4611 /* Bad: an overflow will occurr, we cannot be sure that the
4612 * maximum + 1 is a free number. Scan the values a second
4613 * time to find a free number.
4615 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4617 memset(bits, 0, (num_cases + 7) >> 3);
4618 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4619 if (l->expression == NULL) {
4623 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4624 if (start < num_cases && l->last_case >= 0) {
4625 unsigned long end = (unsigned long)l->last_case < num_cases ?
4626 (unsigned long)l->last_case : num_cases - 1;
4627 for (unsigned long cns = start; cns <= end; ++cns) {
4628 bits[cns >> 3] |= (1 << (cns & 7));
4632 /* We look at the first num_cases constants:
4633 * Either they are densed, so we took the last (num_cases)
4634 * one, or they are non densed, so we will find one free
4638 for (i = 0; i < num_cases; ++i)
4639 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4647 statement->default_proj_nr = def_nr;
4649 if (statement->body != NULL) {
4650 statement_to_firm(statement->body);
4653 if (get_cur_block() != NULL) {
4654 ir_node *jmp = new_Jmp();
4655 add_immBlock_pred(get_break_label(), jmp);
4658 if (!saw_default_label) {
4659 set_cur_block(get_nodes_block(cond));
4660 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4661 statement->default_proj_nr);
4662 add_immBlock_pred(get_break_label(), proj);
4665 if (break_label != NULL) {
4666 mature_immBlock(break_label);
4668 set_cur_block(break_label);
4670 assert(current_switch_cond == cond);
4671 current_switch = old_switch;
4672 current_switch_cond = old_switch_cond;
4673 break_label = old_break_label;
4674 saw_default_label = old_saw_default_label;
4677 static void case_label_to_firm(const case_label_statement_t *statement)
4679 if (statement->is_empty_range)
4682 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4684 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4687 ir_node *old_block = get_nodes_block(current_switch_cond);
4688 ir_node *block = new_immBlock();
4690 set_cur_block(old_block);
4691 if (statement->expression != NULL) {
4692 long pn = statement->first_case;
4693 long end_pn = statement->last_case;
4694 assert(pn <= end_pn);
4695 /* create jumps for all cases in the given range */
4697 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4698 add_immBlock_pred(block, proj);
4699 } while(pn++ < end_pn);
4701 saw_default_label = true;
4702 proj = new_d_defaultProj(dbgi, current_switch_cond,
4703 current_switch->default_proj_nr);
4705 add_immBlock_pred(block, proj);
4708 if (fallthrough != NULL) {
4709 add_immBlock_pred(block, fallthrough);
4711 mature_immBlock(block);
4712 set_cur_block(block);
4714 if (statement->statement != NULL) {
4715 statement_to_firm(statement->statement);
4719 static void label_to_firm(const label_statement_t *statement)
4721 ir_node *block = get_label_block(statement->label);
4723 if (get_cur_block() != NULL) {
4724 ir_node *jmp = new_Jmp();
4725 add_immBlock_pred(block, jmp);
4728 set_cur_block(block);
4730 keep_all_memory(block);
4732 if (statement->statement != NULL) {
4733 statement_to_firm(statement->statement);
4737 static void goto_to_firm(const goto_statement_t *statement)
4739 if (get_cur_block() == NULL)
4742 if (statement->expression) {
4743 ir_node *irn = expression_to_firm(statement->expression);
4744 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4745 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4747 set_irn_link(ijmp, ijmp_list);
4750 ir_node *block = get_label_block(statement->label);
4751 ir_node *jmp = new_Jmp();
4752 add_immBlock_pred(block, jmp);
4754 set_cur_block(NULL);
4757 static void asm_statement_to_firm(const asm_statement_t *statement)
4759 bool needs_memory = false;
4761 if (statement->is_volatile) {
4762 needs_memory = true;
4765 size_t n_clobbers = 0;
4766 asm_clobber_t *clobber = statement->clobbers;
4767 for ( ; clobber != NULL; clobber = clobber->next) {
4768 const char *clobber_str = clobber->clobber.begin;
4770 if (!be_is_valid_clobber(clobber_str)) {
4771 errorf(&statement->base.source_position,
4772 "invalid clobber '%s' specified", clobber->clobber);
4776 if (strcmp(clobber_str, "memory") == 0) {
4777 needs_memory = true;
4781 ident *id = new_id_from_str(clobber_str);
4782 obstack_ptr_grow(&asm_obst, id);
4785 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4786 ident **clobbers = NULL;
4787 if (n_clobbers > 0) {
4788 clobbers = obstack_finish(&asm_obst);
4791 size_t n_inputs = 0;
4792 asm_argument_t *argument = statement->inputs;
4793 for ( ; argument != NULL; argument = argument->next)
4795 size_t n_outputs = 0;
4796 argument = statement->outputs;
4797 for ( ; argument != NULL; argument = argument->next)
4800 unsigned next_pos = 0;
4802 ir_node *ins[n_inputs + n_outputs + 1];
4805 ir_asm_constraint tmp_in_constraints[n_outputs];
4807 const expression_t *out_exprs[n_outputs];
4808 ir_node *out_addrs[n_outputs];
4809 size_t out_size = 0;
4811 argument = statement->outputs;
4812 for ( ; argument != NULL; argument = argument->next) {
4813 const char *constraints = argument->constraints.begin;
4814 asm_constraint_flags_t asm_flags
4815 = be_parse_asm_constraints(constraints);
4817 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4818 errorf(&statement->base.source_position,
4819 "some constraints in '%s' are not supported", constraints);
4822 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4823 errorf(&statement->base.source_position,
4824 "some constraints in '%s' are invalid", constraints);
4827 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4828 errorf(&statement->base.source_position,
4829 "no write flag specified for output constraints '%s'",
4834 unsigned pos = next_pos++;
4835 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4836 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4837 expression_t *expr = argument->expression;
4838 ir_node *addr = expression_to_addr(expr);
4839 /* in+output, construct an artifical same_as constraint on the
4841 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4843 ir_node *value = get_value_from_lvalue(expr, addr);
4845 snprintf(buf, sizeof(buf), "%u", pos);
4847 ir_asm_constraint constraint;
4848 constraint.pos = pos;
4849 constraint.constraint = new_id_from_str(buf);
4850 constraint.mode = get_ir_mode(expr->base.type);
4851 tmp_in_constraints[in_size] = constraint;
4852 ins[in_size] = value;
4857 out_exprs[out_size] = expr;
4858 out_addrs[out_size] = addr;
4860 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4861 /* pure memory ops need no input (but we have to make sure we
4862 * attach to the memory) */
4863 assert(! (asm_flags &
4864 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4865 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4866 needs_memory = true;
4868 /* we need to attach the address to the inputs */
4869 expression_t *expr = argument->expression;
4871 ir_asm_constraint constraint;
4872 constraint.pos = pos;
4873 constraint.constraint = new_id_from_str(constraints);
4874 constraint.mode = NULL;
4875 tmp_in_constraints[in_size] = constraint;
4877 ins[in_size] = expression_to_addr(expr);
4881 errorf(&statement->base.source_position,
4882 "only modifiers but no place set in constraints '%s'",
4887 ir_asm_constraint constraint;
4888 constraint.pos = pos;
4889 constraint.constraint = new_id_from_str(constraints);
4890 constraint.mode = get_ir_mode(argument->expression->base.type);
4892 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4894 assert(obstack_object_size(&asm_obst)
4895 == out_size * sizeof(ir_asm_constraint));
4896 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4899 obstack_grow(&asm_obst, tmp_in_constraints,
4900 in_size * sizeof(tmp_in_constraints[0]));
4901 /* find and count input and output arguments */
4902 argument = statement->inputs;
4903 for ( ; argument != NULL; argument = argument->next) {
4904 const char *constraints = argument->constraints.begin;
4905 asm_constraint_flags_t asm_flags
4906 = be_parse_asm_constraints(constraints);
4908 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4909 errorf(&statement->base.source_position,
4910 "some constraints in '%s' are not supported", constraints);
4913 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4914 errorf(&statement->base.source_position,
4915 "some constraints in '%s' are invalid", constraints);
4918 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4919 errorf(&statement->base.source_position,
4920 "write flag specified for input constraints '%s'",
4926 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4927 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4928 /* we can treat this as "normal" input */
4929 input = expression_to_firm(argument->expression);
4930 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4931 /* pure memory ops need no input (but we have to make sure we
4932 * attach to the memory) */
4933 assert(! (asm_flags &
4934 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4935 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4936 needs_memory = true;
4937 input = expression_to_addr(argument->expression);
4939 errorf(&statement->base.source_position,
4940 "only modifiers but no place set in constraints '%s'",
4945 ir_asm_constraint constraint;
4946 constraint.pos = next_pos++;
4947 constraint.constraint = new_id_from_str(constraints);
4948 constraint.mode = get_irn_mode(input);
4950 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4951 ins[in_size++] = input;
4955 ir_asm_constraint constraint;
4956 constraint.pos = next_pos++;
4957 constraint.constraint = new_id_from_str("");
4958 constraint.mode = mode_M;
4960 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4961 ins[in_size++] = get_store();
4964 assert(obstack_object_size(&asm_obst)
4965 == in_size * sizeof(ir_asm_constraint));
4966 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4968 /* create asm node */
4969 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4971 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4973 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4974 out_size, output_constraints,
4975 n_clobbers, clobbers, asm_text);
4977 if (statement->is_volatile) {
4978 set_irn_pinned(node, op_pin_state_pinned);
4980 set_irn_pinned(node, op_pin_state_floats);
4983 /* create output projs & connect them */
4985 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4990 for (i = 0; i < out_size; ++i) {
4991 const expression_t *out_expr = out_exprs[i];
4993 ir_mode *mode = get_ir_mode(out_expr->base.type);
4994 ir_node *proj = new_Proj(node, mode, pn);
4995 ir_node *addr = out_addrs[i];
4997 set_value_for_expression_addr(out_expr, proj, addr);
5001 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
5002 statement_to_firm(statement->try_statement);
5003 warningf(&statement->base.source_position, "structured exception handling ignored");
5006 static void leave_statement_to_firm(leave_statement_t *statement) {
5007 errorf(&statement->base.source_position, "__leave not supported yet");
5011 * Transform a statement.
5013 static void statement_to_firm(statement_t *statement)
5016 assert(!statement->base.transformed);
5017 statement->base.transformed = true;
5020 switch (statement->kind) {
5021 case STATEMENT_INVALID:
5022 panic("invalid statement found");
5024 case STATEMENT_EMPTY:
5027 case STATEMENT_COMPOUND:
5028 compound_statement_to_firm(&statement->compound);
5030 case STATEMENT_RETURN:
5031 return_statement_to_firm(&statement->returns);
5033 case STATEMENT_EXPRESSION:
5034 expression_statement_to_firm(&statement->expression);
5037 if_statement_to_firm(&statement->ifs);
5039 case STATEMENT_WHILE:
5040 while_statement_to_firm(&statement->whiles);
5042 case STATEMENT_DO_WHILE:
5043 do_while_statement_to_firm(&statement->do_while);
5045 case STATEMENT_DECLARATION:
5046 declaration_statement_to_firm(&statement->declaration);
5048 case STATEMENT_BREAK:
5049 create_jump_statement(statement, get_break_label());
5051 case STATEMENT_CONTINUE:
5052 create_jump_statement(statement, continue_label);
5054 case STATEMENT_SWITCH:
5055 switch_statement_to_firm(&statement->switchs);
5057 case STATEMENT_CASE_LABEL:
5058 case_label_to_firm(&statement->case_label);
5061 for_statement_to_firm(&statement->fors);
5063 case STATEMENT_LABEL:
5064 label_to_firm(&statement->label);
5066 case STATEMENT_LOCAL_LABEL:
5067 /* local labels transform the semantics of labels while parsing
5068 * they don't need any special treatment here */
5070 case STATEMENT_GOTO:
5071 goto_to_firm(&statement->gotos);
5074 asm_statement_to_firm(&statement->asms);
5076 case STATEMENT_MS_TRY:
5077 ms_try_statement_to_firm(&statement->ms_try);
5079 case STATEMENT_LEAVE:
5080 leave_statement_to_firm(&statement->leave);
5083 panic("Statement not implemented\n");
5086 static int count_local_variables(const entity_t *entity,
5087 const entity_t *const end)
5090 for (; entity != end; entity = entity->base.next) {
5091 if (entity->kind != ENTITY_VARIABLE)
5093 type_t *type = skip_typeref(entity->declaration.type);
5095 if (!entity->variable.address_taken && is_type_scalar(type))
5101 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5103 int *const count = env;
5105 switch (stmt->kind) {
5106 case STATEMENT_DECLARATION: {
5107 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5108 *count += count_local_variables(decl_stmt->declarations_begin,
5109 decl_stmt->declarations_end->base.next);
5114 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5122 static int get_function_n_local_vars(entity_t *entity)
5126 /* count parameters */
5127 count += count_local_variables(entity->function.parameters.entities, NULL);
5129 /* count local variables declared in body */
5130 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5135 static void initialize_function_parameters(entity_t *entity)
5137 assert(entity->kind == ENTITY_FUNCTION);
5138 ir_graph *irg = current_ir_graph;
5139 ir_node *args = get_irg_args(irg);
5140 ir_node *start_block = get_irg_start_block(irg);
5141 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5144 entity_t *parameter = entity->function.parameters.entities;
5145 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5146 assert(parameter->kind == ENTITY_VARIABLE);
5147 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5148 type_t *type = skip_typeref(parameter->declaration.type);
5150 bool needs_entity = parameter->variable.address_taken;
5151 assert(!is_type_array(type));
5152 if (is_type_compound(type)) {
5153 needs_entity = true;
5157 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5158 ident *id = new_id_from_str(parameter->base.symbol->string);
5159 set_entity_ident(entity, id);
5161 parameter->declaration.kind
5162 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5163 parameter->variable.v.entity = entity;
5167 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5168 ir_mode *param_mode = get_type_mode(param_irtype);
5171 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5173 ir_mode *mode = get_ir_mode(type);
5174 value = create_conv(NULL, value, mode);
5175 value = do_strict_conv(NULL, value);
5177 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5178 parameter->variable.v.value_number = next_value_number_function;
5179 set_irg_loc_description(current_ir_graph, next_value_number_function,
5180 (variable_t*) ¶meter->variable);
5181 ++next_value_number_function;
5183 set_value(parameter->variable.v.value_number, value);
5188 * Handle additional decl modifiers for IR-graphs
5190 * @param irg the IR-graph
5191 * @param dec_modifiers additional modifiers
5193 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5195 if (decl_modifiers & DM_NORETURN) {
5196 /* TRUE if the declaration includes the Microsoft
5197 __declspec(noreturn) specifier. */
5198 set_irg_additional_property(irg, mtp_property_noreturn);
5200 if (decl_modifiers & DM_NOTHROW) {
5201 /* TRUE if the declaration includes the Microsoft
5202 __declspec(nothrow) specifier. */
5203 set_irg_additional_property(irg, mtp_property_nothrow);
5205 if (decl_modifiers & DM_NAKED) {
5206 /* TRUE if the declaration includes the Microsoft
5207 __declspec(naked) specifier. */
5208 set_irg_additional_property(irg, mtp_property_naked);
5210 if (decl_modifiers & DM_FORCEINLINE) {
5211 /* TRUE if the declaration includes the
5212 Microsoft __forceinline specifier. */
5213 set_irg_inline_property(irg, irg_inline_forced);
5215 if (decl_modifiers & DM_NOINLINE) {
5216 /* TRUE if the declaration includes the Microsoft
5217 __declspec(noinline) specifier. */
5218 set_irg_inline_property(irg, irg_inline_forbidden);
5222 static void add_function_pointer(ir_type *segment, ir_entity *method,
5223 const char *unique_template)
5225 ir_type *method_type = get_entity_type(method);
5226 ident *id = id_unique(unique_template);
5227 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5229 ident *ide = id_unique(unique_template);
5230 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5231 ir_graph *irg = get_const_code_irg();
5232 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5235 set_entity_compiler_generated(ptr, 1);
5236 set_entity_variability(ptr, variability_constant);
5237 set_atomic_ent_value(ptr, val);
5241 * Generate possible IJmp branches to a given label block.
5243 static void gen_ijmp_branches(ir_node *block) {
5245 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5246 add_immBlock_pred(block, ijmp);
5251 * Create code for a function.
5253 static void create_function(entity_t *entity)
5255 assert(entity->kind == ENTITY_FUNCTION);
5256 ir_entity *function_entity = get_function_entity(entity);
5258 if (entity->function.statement == NULL)
5261 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5262 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5263 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5265 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5266 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5267 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5270 current_function_entity = entity;
5271 current_function_name = NULL;
5272 current_funcsig = NULL;
5274 assert(all_labels == NULL);
5275 all_labels = NEW_ARR_F(label_t *, 0);
5278 int n_local_vars = get_function_n_local_vars(entity);
5279 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5281 ir_graph *old_current_function = current_function;
5282 current_function = irg;
5284 set_irg_fp_model(irg, firm_opt.fp_model);
5285 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5286 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5288 ir_node *first_block = get_cur_block();
5290 /* set inline flags */
5291 if (entity->function.is_inline)
5292 set_irg_inline_property(irg, irg_inline_recomended);
5293 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5295 next_value_number_function = 0;
5296 initialize_function_parameters(entity);
5298 statement_to_firm(entity->function.statement);
5300 ir_node *end_block = get_irg_end_block(irg);
5302 /* do we have a return statement yet? */
5303 if (get_cur_block() != NULL) {
5304 type_t *type = skip_typeref(entity->declaration.type);
5305 assert(is_type_function(type));
5306 const function_type_t *func_type = &type->function;
5307 const type_t *return_type
5308 = skip_typeref(func_type->return_type);
5311 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5312 ret = new_Return(get_store(), 0, NULL);
5315 if (is_type_scalar(return_type)) {
5316 mode = get_ir_mode(func_type->return_type);
5322 /* ยง5.1.2.2.3 main implicitly returns 0 */
5323 if (is_main(entity)) {
5324 in[0] = new_Const(mode, get_mode_null(mode));
5326 in[0] = new_Unknown(mode);
5328 ret = new_Return(get_store(), 1, in);
5330 add_immBlock_pred(end_block, ret);
5333 bool has_computed_gotos = false;
5334 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5335 label_t *label = all_labels[i];
5336 if (label->address_taken) {
5337 gen_ijmp_branches(label->block);
5338 has_computed_gotos = true;
5340 mature_immBlock(label->block);
5342 if (has_computed_gotos) {
5343 /* if we have computed goto's in the function, we cannot inline it */
5344 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5345 warningf(&entity->base.source_position,
5346 "function '%Y' can never be inlined because it contains a computed goto",
5347 entity->base.symbol);
5349 set_irg_inline_property(irg, irg_inline_forbidden);
5352 DEL_ARR_F(all_labels);
5355 mature_immBlock(first_block);
5356 mature_immBlock(end_block);
5358 irg_finalize_cons(irg);
5360 /* finalize the frame type */
5361 ir_type *frame_type = get_irg_frame_type(irg);
5362 int n = get_compound_n_members(frame_type);
5365 for (int i = 0; i < n; ++i) {
5366 ir_entity *entity = get_compound_member(frame_type, i);
5367 ir_type *entity_type = get_entity_type(entity);
5369 int align = get_type_alignment_bytes(entity_type);
5370 if (align > align_all)
5374 misalign = offset % align;
5376 offset += align - misalign;
5380 set_entity_offset(entity, offset);
5381 offset += get_type_size_bytes(entity_type);
5383 set_type_size_bytes(frame_type, offset);
5384 set_type_alignment_bytes(frame_type, align_all);
5387 current_function = old_current_function;
5389 /* create inner functions */
5391 for (inner = next_inner_function(); inner != NULL;
5392 inner = next_inner_function()) {
5393 create_function(inner);
5397 static void scope_to_firm(scope_t *scope)
5399 /* first pass: create declarations */
5400 entity_t *entity = scope->entities;
5401 for ( ; entity != NULL; entity = entity->base.next) {
5402 if (entity->base.symbol == NULL)
5405 if (entity->kind == ENTITY_FUNCTION) {
5406 get_function_entity(entity);
5407 } else if (entity->kind == ENTITY_VARIABLE) {
5408 create_global_variable(entity);
5412 /* second pass: create code/initializers */
5413 entity = scope->entities;
5414 for ( ; entity != NULL; entity = entity->base.next) {
5415 if (entity->base.symbol == NULL)
5418 if (entity->kind == ENTITY_FUNCTION) {
5419 create_function(entity);
5420 } else if (entity->kind == ENTITY_VARIABLE) {
5421 assert(entity->declaration.kind
5422 == DECLARATION_KIND_GLOBAL_VARIABLE);
5423 current_ir_graph = get_const_code_irg();
5424 create_variable_initializer(entity);
5429 void init_ast2firm(void)
5431 obstack_init(&asm_obst);
5432 init_atomic_modes();
5434 /* OS option must be set to the backend */
5435 switch (firm_opt.os_support) {
5436 case OS_SUPPORT_MINGW:
5437 create_ld_ident = create_name_win32;
5439 case OS_SUPPORT_LINUX:
5440 create_ld_ident = create_name_linux_elf;
5442 case OS_SUPPORT_MACHO:
5443 create_ld_ident = create_name_macho;
5446 panic("unexpected OS support mode");
5449 /* create idents for all known runtime functions */
5450 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5451 rts_idents[i] = new_id_from_str(rts_data[i].name);
5454 sym_C = symbol_table_insert("C");
5456 entitymap_init(&entitymap);
5459 static void init_ir_types(void)
5461 static int ir_types_initialized = 0;
5462 if (ir_types_initialized)
5464 ir_types_initialized = 1;
5466 ir_type_int = get_ir_type(type_int);
5467 ir_type_const_char = get_ir_type(type_const_char);
5468 ir_type_wchar_t = get_ir_type(type_wchar_t);
5469 ir_type_void = get_ir_type(type_void);
5472 void exit_ast2firm(void)
5474 entitymap_destroy(&entitymap);
5475 obstack_free(&asm_obst, NULL);
5478 static void global_asm_to_firm(statement_t *s)
5480 for (; s != NULL; s = s->base.next) {
5481 assert(s->kind == STATEMENT_ASM);
5483 char const *const text = s->asms.asm_text.begin;
5484 size_t size = s->asms.asm_text.size;
5486 /* skip the last \0 */
5487 if (text[size - 1] == '\0')
5490 ident *const id = new_id_from_chars(text, size);
5495 void translation_unit_to_firm(translation_unit_t *unit)
5497 /* just to be sure */
5498 continue_label = NULL;
5500 current_switch_cond = NULL;
5501 current_translation_unit = unit;
5504 inner_functions = NEW_ARR_F(entity_t *, 0);
5506 scope_to_firm(&unit->scope);
5507 global_asm_to_firm(unit->global_asm);
5509 DEL_ARR_F(inner_functions);
5510 inner_functions = NULL;
5512 current_ir_graph = NULL;
5513 current_translation_unit = NULL;