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 "walk_statements.h"
46 #include "entitymap_t.h"
47 #include "driver/firm_opt.h"
48 #include "driver/firm_cmdline.h"
50 /* some idents needed for name mangling */
51 static ident *id_underscore;
54 static ir_type *ir_type_const_char;
55 static ir_type *ir_type_wchar_t;
56 static ir_type *ir_type_void;
57 static ir_type *ir_type_int;
59 static int next_value_number_function;
60 static ir_node *continue_label;
61 static ir_node *break_label;
62 static ir_node *current_switch_cond;
63 static bool saw_default_label;
64 static label_t **all_labels;
65 static entity_t **inner_functions;
66 static ir_node *ijmp_list;
67 static bool constant_folding;
69 extern bool have_const_functions;
71 static const entity_t *current_function_entity;
72 static ir_node *current_function_name;
73 static ir_node *current_funcsig;
74 static switch_statement_t *current_switch;
75 static ir_graph *current_function;
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_type *get_ir_type(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 inline ir_mode *get_ir_mode(type_t *type);
155 static void create_local_declaration(entity_t *entity);
157 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
159 unsigned flags = get_atomic_type_flags(kind);
160 unsigned size = get_atomic_type_size(kind);
161 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
162 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
165 unsigned bit_size = size * 8;
166 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
167 ir_mode_arithmetic arithmetic;
168 unsigned modulo_shift;
170 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
171 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
172 snprintf(name, sizeof(name), "i%s%u", is_signed ? "" : "u", bit_size);
173 sort = irms_int_number;
174 arithmetic = irma_twos_complement;
175 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
177 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
178 snprintf(name, sizeof(name), "f%u", bit_size);
179 sort = irms_float_number;
180 arithmetic = irma_ieee754;
183 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
191 * Initialises the atomic modes depending on the machine size.
193 static void init_atomic_modes(void)
195 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
196 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
198 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
199 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
201 /* there's no real void type in firm */
202 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
204 /* initialize pointer modes */
206 ir_mode_sort sort = irms_reference;
207 unsigned bit_size = machine_size;
209 ir_mode_arithmetic arithmetic = irma_twos_complement;
210 unsigned modulo_shift
211 = bit_size < machine_size ? machine_size : bit_size;
213 snprintf(name, sizeof(name), "p%u", machine_size);
214 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
217 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
218 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
220 /* Hmm, pointers should be machine size */
221 set_modeP_data(ptr_mode);
222 set_modeP_code(ptr_mode);
225 static unsigned get_compound_type_size(compound_type_t *type)
227 ir_type *irtype = get_ir_type((type_t*) type);
228 return get_type_size_bytes(irtype);
231 static unsigned get_array_type_size(array_type_t *type)
233 assert(!type->is_vla);
234 ir_type *irtype = get_ir_type((type_t*) type);
235 return get_type_size_bytes(irtype);
239 static unsigned get_type_size_const(type_t *type)
243 panic("error type occurred");
245 return get_atomic_type_size(type->atomic.akind);
247 return 2 * get_atomic_type_size(type->complex.akind);
249 return get_atomic_type_size(type->imaginary.akind);
251 return get_mode_size_bytes(mode_int);
252 case TYPE_COMPOUND_UNION:
253 case TYPE_COMPOUND_STRUCT:
254 return get_compound_type_size(&type->compound);
256 /* just a pointer to the function */
257 return get_mode_size_bytes(mode_P_code);
259 return get_mode_size_bytes(mode_P_data);
261 return get_array_type_size(&type->array);
263 return get_type_size_const(type->builtin.real_type);
265 panic("type size of bitfield request");
271 panic("Trying to determine size of invalid type");
274 static ir_node *get_type_size(type_t *type)
276 type = skip_typeref(type);
278 if (is_type_array(type) && type->array.is_vla) {
279 ir_node *size_node = type->array.size_node;
280 if (size_node == NULL) {
281 size_node = expression_to_firm(type->array.size_expression);
282 assert(!is_Const(size_node));
283 type->array.size_node = size_node;
286 ir_node *elem_size = get_type_size(type->array.element_type);
287 ir_mode *mode = get_irn_mode(size_node);
288 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
292 ir_mode *mode = get_ir_mode(type_size_t);
294 sym.type_p = get_ir_type(type);
295 return new_SymConst(mode, sym, symconst_type_size);
298 static unsigned count_parameters(const function_type_t *function_type)
302 function_parameter_t *parameter = function_type->parameters;
303 for ( ; parameter != NULL; parameter = parameter->next) {
311 * Creates a Firm type for an atomic type
313 static ir_type *create_atomic_type(const atomic_type_t *type)
315 atomic_type_kind_t kind = type->akind;
316 ir_mode *mode = _atomic_modes[kind];
317 ident *id = get_mode_ident(mode);
318 ir_type *irtype = new_type_primitive(id, mode);
320 set_type_alignment_bytes(irtype, type->base.alignment);
326 * Creates a Firm type for a complex type
328 static ir_type *create_complex_type(const complex_type_t *type)
330 atomic_type_kind_t kind = type->akind;
331 ir_mode *mode = _atomic_modes[kind];
332 ident *id = get_mode_ident(mode);
336 /* FIXME: finish the array */
341 * Creates a Firm type for an imaginary type
343 static ir_type *create_imaginary_type(const imaginary_type_t *type)
345 atomic_type_kind_t kind = type->akind;
346 ir_mode *mode = _atomic_modes[kind];
347 ident *id = get_mode_ident(mode);
348 ir_type *irtype = new_type_primitive(id, mode);
350 set_type_alignment_bytes(irtype, type->base.alignment);
356 * return type of a parameter (and take transparent union gnu extension into
359 static type_t *get_parameter_type(type_t *type)
361 type = skip_typeref(type);
362 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
363 compound_t *compound = type->compound.compound;
364 type = compound->members.entities->declaration.type;
370 static ir_type *create_method_type(const function_type_t *function_type)
372 type_t *return_type = skip_typeref(function_type->return_type);
374 ident *id = id_unique("functiontype.%u");
375 int n_parameters = count_parameters(function_type);
376 int n_results = return_type == type_void ? 0 : 1;
377 ir_type *irtype = new_type_method(id, n_parameters, n_results);
379 if (return_type != type_void) {
380 ir_type *restype = get_ir_type(return_type);
381 set_method_res_type(irtype, 0, restype);
384 function_parameter_t *parameter = function_type->parameters;
386 for ( ; parameter != NULL; parameter = parameter->next) {
387 type_t *type = get_parameter_type(parameter->type);
388 ir_type *p_irtype = get_ir_type(type);
389 set_method_param_type(irtype, n, p_irtype);
393 if (function_type->variadic || function_type->unspecified_parameters) {
394 set_method_variadicity(irtype, variadicity_variadic);
397 unsigned cc = get_method_calling_convention(irtype);
398 switch (function_type->calling_convention) {
399 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
402 set_method_calling_convention(irtype, SET_CDECL(cc));
406 if (function_type->variadic || function_type->unspecified_parameters)
409 /* only non-variadic function can use stdcall, else use cdecl */
410 set_method_calling_convention(irtype, SET_STDCALL(cc));
414 if (function_type->variadic || function_type->unspecified_parameters)
416 /* only non-variadic function can use fastcall, else use cdecl */
417 set_method_calling_convention(irtype, SET_FASTCALL(cc));
421 /* Hmm, leave default, not accepted by the parser yet. */
427 static ir_type *create_pointer_type(pointer_type_t *type)
429 type_t *points_to = type->points_to;
430 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
431 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
432 ir_points_to, mode_P_data);
437 static ir_type *create_array_type(array_type_t *type)
439 type_t *element_type = type->element_type;
440 ir_type *ir_element_type = get_ir_type(element_type);
442 ident *id = id_unique("array.%u");
443 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
445 const int align = get_type_alignment_bytes(ir_element_type);
446 set_type_alignment_bytes(ir_type, align);
448 if (type->size_constant) {
449 int n_elements = type->size;
451 set_array_bounds_int(ir_type, 0, 0, n_elements);
453 size_t elemsize = get_type_size_bytes(ir_element_type);
454 if (elemsize % align > 0) {
455 elemsize += align - (elemsize % align);
457 set_type_size_bytes(ir_type, n_elements * elemsize);
459 set_array_lower_bound_int(ir_type, 0, 0);
461 set_type_state(ir_type, layout_fixed);
467 * Return the signed integer type of size bits.
469 * @param size the size
471 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
474 static ir_mode *s_modes[64 + 1] = {NULL, };
478 if (size <= 0 || size > 64)
481 mode = s_modes[size];
485 snprintf(name, sizeof(name), "bf_I%u", size);
486 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
487 size <= 32 ? 32 : size );
488 s_modes[size] = mode;
492 snprintf(name, sizeof(name), "I%u", size);
493 ident *id = new_id_from_str(name);
494 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
495 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
496 set_primitive_base_type(res, base_tp);
502 * Return the unsigned integer type of size bits.
504 * @param size the size
506 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
509 static ir_mode *u_modes[64 + 1] = {NULL, };
513 if (size <= 0 || size > 64)
516 mode = u_modes[size];
520 snprintf(name, sizeof(name), "bf_U%u", size);
521 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
522 size <= 32 ? 32 : size );
523 u_modes[size] = mode;
528 snprintf(name, sizeof(name), "U%u", size);
529 ident *id = new_id_from_str(name);
530 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
531 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
532 set_primitive_base_type(res, base_tp);
537 static ir_type *create_bitfield_type(bitfield_type_t *const type)
539 type_t *base = skip_typeref(type->base_type);
540 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
541 ir_type *irbase = get_ir_type(base);
543 unsigned size = type->bit_size;
545 assert(!is_type_float(base));
546 if (is_type_signed(base)) {
547 return get_signed_int_type_for_bit_size(irbase, size);
549 return get_unsigned_int_type_for_bit_size(irbase, size);
553 #define INVALID_TYPE ((ir_type_ptr)-1)
556 COMPOUND_IS_STRUCT = false,
557 COMPOUND_IS_UNION = true
561 * Construct firm type from ast struct type.
563 * As anonymous inner structs get flattened to a single firm type, we might get
564 * irtype, outer_offset and out_align passed (they represent the position of
565 * the anonymous inner struct inside the resulting firm struct)
567 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
568 size_t *outer_offset, size_t *outer_align,
569 bool incomplete, bool is_union)
571 compound_t *compound = type->compound;
573 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
574 return compound->irtype;
577 size_t align_all = 1;
579 size_t bit_offset = 0;
582 if (irtype == NULL) {
583 symbol_t *symbol = compound->base.symbol;
585 if (symbol != NULL) {
586 id = new_id_from_str(symbol->string);
589 id = id_unique("__anonymous_union.%u");
591 id = id_unique("__anonymous_struct.%u");
594 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
597 irtype = new_d_type_union(id, dbgi);
599 irtype = new_d_type_struct(id, dbgi);
602 compound->irtype_complete = false;
603 compound->irtype = irtype;
605 offset = *outer_offset;
606 align_all = *outer_align;
612 compound->irtype_complete = true;
614 entity_t *entry = compound->members.entities;
615 for ( ; entry != NULL; entry = entry->base.next) {
616 if (entry->kind != ENTITY_COMPOUND_MEMBER)
619 size_t prev_offset = offset;
621 symbol_t *symbol = entry->base.symbol;
622 type_t *entry_type = skip_typeref(entry->declaration.type);
623 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
626 if (symbol != NULL) {
627 ident = new_id_from_str(symbol->string);
629 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
630 create_compound_type(&entry_type->compound, irtype, &offset,
631 &align_all, false, COMPOUND_IS_STRUCT);
632 goto finished_member;
633 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
634 create_compound_type(&entry_type->compound, irtype, &offset,
635 &align_all, false, COMPOUND_IS_UNION);
636 goto finished_member;
638 assert(entry_type->kind == TYPE_BITFIELD);
640 ident = id_unique("anon.%u");
643 ir_type *base_irtype;
644 if (entry_type->kind == TYPE_BITFIELD) {
645 base_irtype = get_ir_type(entry_type->bitfield.base_type);
647 base_irtype = get_ir_type(entry_type);
650 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
651 size_t misalign = offset % entry_alignment;
653 ir_type *entry_irtype = get_ir_type(entry_type);
654 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
657 size_t bits_remainder;
658 if (entry_type->kind == TYPE_BITFIELD) {
659 size_t size_bits = entry_type->bitfield.bit_size;
660 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
662 if (size_bits > rest_size_bits) {
663 /* start a new bucket */
664 offset += entry_alignment - misalign;
670 /* put into current bucket */
671 base = offset - misalign;
672 bits_remainder = misalign * 8 + bit_offset;
675 offset += size_bits / 8;
676 bit_offset = bit_offset + (size_bits % 8);
678 size_t entry_size = get_type_size_bytes(base_irtype);
679 if (misalign > 0 || bit_offset > 0)
680 offset += entry_alignment - misalign;
684 offset += entry_size;
688 if (entry_alignment > align_all) {
689 if (entry_alignment % align_all != 0) {
690 panic("uneven alignments not supported yet");
692 align_all = entry_alignment;
695 set_entity_offset(entity, base);
696 set_entity_offset_bits_remainder(entity,
697 (unsigned char) bits_remainder);
698 //add_struct_member(irtype, entity);
699 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
700 assert(entry->compound_member.entity == NULL);
701 entry->compound_member.entity = entity;
705 size_t entry_size = offset - prev_offset;
706 if (entry_size > size) {
718 size_t misalign = offset % align_all;
719 if (misalign > 0 || bit_offset > 0) {
720 size += align_all - misalign;
723 if (outer_offset != NULL) {
725 *outer_offset = offset;
727 *outer_offset += size;
730 if (align_all > *outer_align) {
731 if (align_all % *outer_align != 0) {
732 panic("uneven alignments not supported yet");
734 *outer_align = align_all;
737 set_type_alignment_bytes(irtype, align_all);
738 set_type_size_bytes(irtype, size);
739 set_type_state(irtype, layout_fixed);
745 static ir_type *create_enum_type(enum_type_t *const type)
747 type->base.firm_type = ir_type_int;
749 ir_mode *const mode = mode_int;
750 tarval *const one = get_mode_one(mode);
751 tarval * tv_next = get_tarval_null(mode);
753 bool constant_folding_old = constant_folding;
754 constant_folding = true;
756 enum_t *enume = type->enume;
757 entity_t *entry = enume->base.next;
758 for (; entry != NULL; entry = entry->base.next) {
759 if (entry->kind != ENTITY_ENUM_VALUE)
762 expression_t *const init = entry->enum_value.value;
764 ir_node *const cnst = expression_to_firm(init);
765 if (!is_Const(cnst)) {
766 panic("couldn't fold constant");
768 tv_next = get_Const_tarval(cnst);
770 entry->enum_value.tv = tv_next;
771 tv_next = tarval_add(tv_next, one);
774 constant_folding = constant_folding_old;
779 static ir_type *get_ir_type_incomplete(type_t *type)
781 assert(type != NULL);
782 type = skip_typeref(type);
784 if (type->base.firm_type != NULL) {
785 assert(type->base.firm_type != INVALID_TYPE);
786 return type->base.firm_type;
789 switch (type->kind) {
790 case TYPE_COMPOUND_STRUCT:
791 return create_compound_type(&type->compound, NULL, NULL, NULL,
792 true, COMPOUND_IS_STRUCT);
793 case TYPE_COMPOUND_UNION:
794 return create_compound_type(&type->compound, NULL, NULL, NULL,
795 true, COMPOUND_IS_UNION);
797 return get_ir_type(type);
801 static ir_type *get_ir_type(type_t *type)
803 assert(type != NULL);
805 type = skip_typeref(type);
807 if (type->base.firm_type != NULL) {
808 assert(type->base.firm_type != INVALID_TYPE);
809 return type->base.firm_type;
812 ir_type *firm_type = NULL;
813 switch (type->kind) {
815 /* Happens while constant folding, when there was an error */
816 return create_atomic_type(&type_void->atomic);
819 firm_type = create_atomic_type(&type->atomic);
822 firm_type = create_complex_type(&type->complex);
825 firm_type = create_imaginary_type(&type->imaginary);
828 firm_type = create_method_type(&type->function);
831 firm_type = create_pointer_type(&type->pointer);
834 firm_type = create_array_type(&type->array);
836 case TYPE_COMPOUND_STRUCT:
837 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
838 false, COMPOUND_IS_STRUCT);
840 case TYPE_COMPOUND_UNION:
841 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
842 false, COMPOUND_IS_UNION);
845 firm_type = create_enum_type(&type->enumt);
848 firm_type = get_ir_type(type->builtin.real_type);
851 firm_type = create_bitfield_type(&type->bitfield);
859 if (firm_type == NULL)
860 panic("unknown type found");
862 type->base.firm_type = firm_type;
866 static inline ir_mode *get_ir_mode(type_t *type)
868 ir_type *irtype = get_ir_type(type);
870 /* firm doesn't report a mode for arrays somehow... */
871 if (is_Array_type(irtype)) {
875 ir_mode *mode = get_type_mode(irtype);
876 assert(mode != NULL);
880 /** Names of the runtime functions. */
881 static const struct {
882 int id; /**< the rts id */
883 int n_res; /**< number of return values */
884 const char *name; /**< the name of the rts function */
885 int n_params; /**< number of parameters */
886 unsigned flags; /**< language flags */
888 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
889 { rts_abort, 0, "abort", 0, _C89 },
890 { rts_alloca, 1, "alloca", 1, _ALL },
891 { rts_abs, 1, "abs", 1, _C89 },
892 { rts_labs, 1, "labs", 1, _C89 },
893 { rts_llabs, 1, "llabs", 1, _C99 },
894 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
896 { rts_fabs, 1, "fabs", 1, _C89 },
897 { rts_sqrt, 1, "sqrt", 1, _C89 },
898 { rts_cbrt, 1, "cbrt", 1, _C99 },
899 { rts_exp, 1, "exp", 1, _C89 },
900 { rts_exp2, 1, "exp2", 1, _C89 },
901 { rts_exp10, 1, "exp10", 1, _GNUC },
902 { rts_log, 1, "log", 1, _C89 },
903 { rts_log2, 1, "log2", 1, _C89 },
904 { rts_log10, 1, "log10", 1, _C89 },
905 { rts_pow, 1, "pow", 2, _C89 },
906 { rts_sin, 1, "sin", 1, _C89 },
907 { rts_cos, 1, "cos", 1, _C89 },
908 { rts_tan, 1, "tan", 1, _C89 },
909 { rts_asin, 1, "asin", 1, _C89 },
910 { rts_acos, 1, "acos", 1, _C89 },
911 { rts_atan, 1, "atan", 1, _C89 },
912 { rts_sinh, 1, "sinh", 1, _C89 },
913 { rts_cosh, 1, "cosh", 1, _C89 },
914 { rts_tanh, 1, "tanh", 1, _C89 },
916 { rts_fabsf, 1, "fabsf", 1, _C99 },
917 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
918 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
919 { rts_expf, 1, "expf", 1, _C99 },
920 { rts_exp2f, 1, "exp2f", 1, _C99 },
921 { rts_exp10f, 1, "exp10f", 1, _GNUC },
922 { rts_logf, 1, "logf", 1, _C99 },
923 { rts_log2f, 1, "log2f", 1, _C99 },
924 { rts_log10f, 1, "log10f", 1, _C99 },
925 { rts_powf, 1, "powf", 2, _C99 },
926 { rts_sinf, 1, "sinf", 1, _C99 },
927 { rts_cosf, 1, "cosf", 1, _C99 },
928 { rts_tanf, 1, "tanf", 1, _C99 },
929 { rts_asinf, 1, "asinf", 1, _C99 },
930 { rts_acosf, 1, "acosf", 1, _C99 },
931 { rts_atanf, 1, "atanf", 1, _C99 },
932 { rts_sinhf, 1, "sinhf", 1, _C99 },
933 { rts_coshf, 1, "coshf", 1, _C99 },
934 { rts_tanhf, 1, "tanhf", 1, _C99 },
936 { rts_fabsl, 1, "fabsl", 1, _C99 },
937 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
938 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
939 { rts_expl, 1, "expl", 1, _C99 },
940 { rts_exp2l, 1, "exp2l", 1, _C99 },
941 { rts_exp10l, 1, "exp10l", 1, _GNUC },
942 { rts_logl, 1, "logl", 1, _C99 },
943 { rts_log2l, 1, "log2l", 1, _C99 },
944 { rts_log10l, 1, "log10l", 1, _C99 },
945 { rts_powl, 1, "powl", 2, _C99 },
946 { rts_sinl, 1, "sinl", 1, _C99 },
947 { rts_cosl, 1, "cosl", 1, _C99 },
948 { rts_tanl, 1, "tanl", 1, _C99 },
949 { rts_asinl, 1, "asinl", 1, _C99 },
950 { rts_acosl, 1, "acosl", 1, _C99 },
951 { rts_atanl, 1, "atanl", 1, _C99 },
952 { rts_sinhl, 1, "sinhl", 1, _C99 },
953 { rts_coshl, 1, "coshl", 1, _C99 },
954 { rts_tanhl, 1, "tanhl", 1, _C99 },
956 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
957 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
958 { rts_strcmp, 1, "strcmp", 2, _C89 },
959 { rts_strncmp, 1, "strncmp", 3, _C89 }
962 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
965 * Mangles an entity linker (ld) name for win32 usage.
967 * @param ent the entity to be mangled
968 * @param declaration the declaration
970 static ident *create_ld_ident_win32(ir_entity *irentity, entity_t *entity)
974 if (is_Method_type(get_entity_type(irentity)))
975 id = decorate_win32_c_fkt(irentity, get_entity_ident(irentity));
977 /* always add an underscore in win32 */
978 id = mangle(id_underscore, get_entity_ident(irentity));
981 assert(is_declaration(entity));
982 decl_modifiers_t decl_modifiers = entity->declaration.modifiers;
983 if (decl_modifiers & DM_DLLIMPORT) {
984 /* add prefix for imported symbols */
985 id = mangle(id_imp, id);
991 * Mangles an entity linker (ld) name for Linux ELF usage.
993 * @param ent the entity to be mangled
994 * @param declaration the declaration
996 static ident *create_ld_ident_linux_elf(ir_entity *irentity, entity_t *entity)
999 return get_entity_ident(irentity);
1003 * Mangles an entity linker (ld) name for Mach-O usage.
1005 * @param ent the entity to be mangled
1006 * @param declaration the declaration
1008 static ident *create_ld_ident_macho(ir_entity *irentity, entity_t *entity)
1011 ident *id = mangle(id_underscore, get_entity_ident(irentity));
1015 typedef ident* (*create_ld_ident_func)(ir_entity *irentity, entity_t *entity);
1016 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1019 * Handle GNU attributes for entities
1021 * @param ent the entity
1022 * @param decl the routine declaration
1024 static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
1026 assert(is_declaration(entity));
1027 decl_modifiers_t modifiers = entity->declaration.modifiers;
1028 if (modifiers & DM_PURE) {
1029 /* TRUE if the declaration includes the GNU
1030 __attribute__((pure)) specifier. */
1031 set_entity_additional_property(irentity, mtp_property_pure);
1033 if (modifiers & DM_CONST) {
1034 set_entity_additional_property(irentity, mtp_property_const);
1035 have_const_functions = true;
1037 if (modifiers & DM_USED) {
1038 /* TRUE if the declaration includes the GNU
1039 __attribute__((used)) specifier. */
1040 set_entity_stickyness(irentity, stickyness_sticky);
1045 * Creates an entity representing a function.
1047 * @param declaration the function declaration
1049 static ir_entity *get_function_entity(entity_t *entity)
1051 assert(entity->kind == ENTITY_FUNCTION);
1052 if (entity->function.entity != NULL) {
1053 return entity->function.entity;
1056 symbol_t *symbol = entity->base.symbol;
1057 ident *id = new_id_from_str(symbol->string);
1059 ir_type *global_type = get_glob_type();
1060 ir_type *ir_type_method = get_ir_type(entity->declaration.type);
1061 bool const has_body = entity->function.statement != NULL;
1063 /* already an entity defined? */
1064 ir_entity *irentity = entitymap_get(&entitymap, symbol);
1065 if (irentity != NULL) {
1066 if (get_entity_visibility(irentity) == visibility_external_allocated
1068 set_entity_visibility(irentity, visibility_external_visible);
1070 goto entity_created;
1073 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
1074 irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
1075 set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
1077 handle_gnu_attributes_ent(irentity, entity);
1079 /* static inline => local
1080 * extern inline => local
1081 * inline without definition => local
1082 * inline with definition => external_visible */
1083 storage_class_tag_t const storage_class
1084 = (storage_class_tag_t) entity->declaration.storage_class;
1085 bool const is_inline = entity->function.is_inline;
1086 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1087 set_entity_visibility(irentity, visibility_external_visible);
1088 } else if (storage_class == STORAGE_CLASS_STATIC ||
1089 (is_inline && has_body)) {
1091 /* this entity was declared, but is defined nowhere */
1092 set_entity_peculiarity(irentity, peculiarity_description);
1094 set_entity_visibility(irentity, visibility_local);
1095 } else if (has_body) {
1096 set_entity_visibility(irentity, visibility_external_visible);
1098 set_entity_visibility(irentity, visibility_external_allocated);
1100 set_entity_allocation(irentity, allocation_static);
1102 /* We should check for file scope here, but as long as we compile C only
1103 this is not needed. */
1104 if (! firm_opt.freestanding) {
1105 /* check for a known runtime function */
1106 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1107 if (id != rts_idents[i])
1110 /* ignore those rts functions not necessary needed for current mode */
1111 if ((c_mode & rts_data[i].flags) == 0)
1113 assert(rts_entities[rts_data[i].id] == NULL);
1114 rts_entities[rts_data[i].id] = irentity;
1118 entitymap_insert(&entitymap, symbol, irentity);
1121 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1122 entity->function.entity = irentity;
1128 * Creates a Const node representing a constant.
1130 static ir_node *const_to_firm(const const_expression_t *cnst)
1132 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1133 ir_mode *mode = get_ir_mode(cnst->base.type);
1138 if (mode_is_float(mode)) {
1139 tv = new_tarval_from_double(cnst->v.float_value, mode);
1141 if (mode_is_signed(mode)) {
1142 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1144 len = snprintf(buf, sizeof(buf), "%llu",
1145 (unsigned long long) cnst->v.int_value);
1147 tv = new_tarval_from_str(buf, len, mode);
1150 return new_d_Const(dbgi, mode, tv);
1154 * Creates a Const node representing a character constant.
1156 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1158 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1159 ir_mode *mode = get_ir_mode(cnst->base.type);
1161 long long int v = 0;
1162 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1163 if (char_is_signed) {
1164 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1166 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1170 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1171 tarval *tv = new_tarval_from_str(buf, len, mode);
1173 return new_d_Const(dbgi, mode, tv);
1177 * Creates a Const node representing a wide character constant.
1179 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1181 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1182 ir_mode *mode = get_ir_mode(cnst->base.type);
1184 long long int v = cnst->v.wide_character.begin[0];
1187 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1188 tarval *tv = new_tarval_from_str(buf, len, mode);
1190 return new_d_Const(dbgi, mode, tv);
1194 * Creates a SymConst for a given entity.
1196 * @param dbgi debug info
1197 * @param mode the (reference) mode for the SymConst
1198 * @param entity the entity
1200 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1203 assert(entity != NULL);
1204 union symconst_symbol sym;
1205 sym.entity_p = entity;
1206 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1210 * Creates a SymConst node representing a string constant.
1212 * @param src_pos the source position of the string constant
1213 * @param id_prefix a prefix for the name of the generated string constant
1214 * @param value the value of the string constant
1216 static ir_node *string_to_firm(const source_position_t *const src_pos,
1217 const char *const id_prefix,
1218 const string_t *const value)
1220 ir_type *const global_type = get_glob_type();
1221 dbg_info *const dbgi = get_dbg_info(src_pos);
1222 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1223 ir_type_const_char, dbgi);
1225 ident *const id = id_unique(id_prefix);
1226 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1227 set_entity_ld_ident(entity, id);
1228 set_entity_variability(entity, variability_constant);
1229 set_entity_allocation(entity, allocation_static);
1231 ir_type *const elem_type = ir_type_const_char;
1232 ir_mode *const mode = get_type_mode(elem_type);
1234 const char* const string = value->begin;
1235 const size_t slen = value->size;
1237 set_array_lower_bound_int(type, 0, 0);
1238 set_array_upper_bound_int(type, 0, slen);
1239 set_type_size_bytes(type, slen);
1240 set_type_state(type, layout_fixed);
1242 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1243 for (size_t i = 0; i < slen; ++i) {
1244 tvs[i] = new_tarval_from_long(string[i], mode);
1247 set_array_entity_values(entity, tvs, slen);
1250 return create_symconst(dbgi, mode_P_data, entity);
1254 * Creates a SymConst node representing a string literal.
1256 * @param literal the string literal
1258 static ir_node *string_literal_to_firm(
1259 const string_literal_expression_t* literal)
1261 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1266 * Creates a SymConst node representing a wide string literal.
1268 * @param literal the wide string literal
1270 static ir_node *wide_string_literal_to_firm(
1271 const wide_string_literal_expression_t* const literal)
1273 ir_type *const global_type = get_glob_type();
1274 ir_type *const elem_type = ir_type_wchar_t;
1275 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1276 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1279 ident *const id = id_unique("Lstr.%u");
1280 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1281 set_entity_ld_ident(entity, id);
1282 set_entity_variability(entity, variability_constant);
1283 set_entity_allocation(entity, allocation_static);
1285 ir_mode *const mode = get_type_mode(elem_type);
1287 const wchar_rep_t *const string = literal->value.begin;
1288 const size_t slen = literal->value.size;
1290 set_array_lower_bound_int(type, 0, 0);
1291 set_array_upper_bound_int(type, 0, slen);
1292 set_type_size_bytes(type, slen);
1293 set_type_state(type, layout_fixed);
1295 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1296 for (size_t i = 0; i < slen; ++i) {
1297 tvs[i] = new_tarval_from_long(string[i], mode);
1300 set_array_entity_values(entity, tvs, slen);
1303 return create_symconst(dbgi, mode_P_data, entity);
1306 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1307 ir_node *const addr)
1309 ir_type *irtype = get_ir_type(type);
1310 if (is_compound_type(irtype)
1311 || is_Method_type(irtype)
1312 || is_Array_type(irtype)) {
1316 ir_mode *const mode = get_type_mode(irtype);
1317 ir_node *const memory = get_store();
1318 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1319 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1320 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1322 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1323 set_Load_volatility(load, volatility_is_volatile);
1326 set_store(load_mem);
1331 * Creates a strict Conv if neccessary.
1333 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1335 ir_mode *mode = get_irn_mode(node);
1337 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1339 if (!mode_is_float(mode))
1342 /* check if there is already a Conv */
1343 if (is_Conv(node)) {
1344 /* convert it into a strict Conv */
1345 set_Conv_strict(node, 1);
1349 /* otherwise create a new one */
1350 return new_d_strictConv(dbgi, node, mode);
1353 static ir_node *get_global_var_address(dbg_info *const dbgi,
1354 const entity_t *const entity)
1356 assert(entity->kind == ENTITY_VARIABLE);
1357 assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1359 ir_entity *const irentity = entity->variable.v.entity;
1360 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1361 case STORAGE_CLASS_THREAD:
1362 case STORAGE_CLASS_THREAD_EXTERN:
1363 case STORAGE_CLASS_THREAD_STATIC: {
1364 ir_node *const no_mem = new_NoMem();
1365 ir_node *const tls = get_irg_tls(current_ir_graph);
1366 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1370 return create_symconst(dbgi, mode_P_data, irentity);
1375 * Returns the correct base address depending on whether it is a parameter or a
1376 * normal local variable.
1378 static ir_node *get_local_frame(ir_entity *const ent)
1380 ir_graph *const irg = current_ir_graph;
1381 const ir_type *const owner = get_entity_owner(ent);
1382 if (owner == get_irg_frame_type(irg)) {
1383 return get_irg_frame(irg);
1385 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1386 return get_irg_value_param_base(irg);
1390 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1392 ir_mode *value_mode = get_irn_mode(value);
1394 if (value_mode == dest_mode || is_Bad(value))
1397 if (dest_mode == mode_b) {
1398 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1399 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1400 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1404 return new_d_Conv(dbgi, value, dest_mode);
1408 * Keep all memory edges of the given block.
1410 static void keep_all_memory(ir_node *block) {
1411 ir_node *old = get_cur_block();
1413 set_cur_block(block);
1414 keep_alive(get_store());
1415 /* TODO: keep all memory edges from restricted pointers */
1419 static ir_node *reference_expression_enum_value_to_firm(
1420 const reference_expression_t *ref)
1422 entity_t *entity = ref->entity;
1423 type_t *type = skip_typeref(entity->enum_value.enum_type);
1424 /* make sure the type is constructed */
1425 (void) get_ir_type(type);
1427 ir_mode *const mode = get_ir_mode(type);
1428 return new_Const(mode, entity->enum_value.tv);
1431 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1433 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1434 entity_t *entity = ref->entity;
1435 assert(is_declaration(entity));
1436 type_t *type = skip_typeref(entity->declaration.type);
1438 /* make sure the type is constructed */
1439 (void) get_ir_type(type);
1441 switch ((declaration_kind_t) entity->declaration.kind) {
1442 case DECLARATION_KIND_UNKNOWN:
1445 case DECLARATION_KIND_LOCAL_VARIABLE: {
1446 ir_mode *const mode = get_ir_mode(type);
1447 return get_value(entity->variable.v.value_number, mode);
1449 case DECLARATION_KIND_FUNCTION: {
1450 ir_mode *const mode = get_ir_mode(type);
1451 return create_symconst(dbgi, mode, entity->function.entity);
1453 case DECLARATION_KIND_INNER_FUNCTION: {
1454 ir_mode *const mode = get_ir_mode(type);
1455 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1456 /* inner function not using the closure */
1457 return create_symconst(dbgi, mode, entity->function.entity);
1459 /* TODO: need trampoline here */
1460 panic("Trampoline code not implemented");
1461 return create_symconst(dbgi, mode, entity->function.entity);
1464 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1465 ir_node *const addr = get_global_var_address(dbgi, entity);
1466 return deref_address(dbgi, entity->declaration.type, addr);
1469 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1470 ir_entity *irentity = entity->variable.v.entity;
1471 ir_node *frame = get_local_frame(irentity);
1472 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1473 return deref_address(dbgi, entity->declaration.type, sel);
1476 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1477 return entity->variable.v.vla_base;
1479 case DECLARATION_KIND_COMPOUND_MEMBER:
1480 panic("not implemented reference type");
1483 panic("reference to declaration with unknown type found");
1486 static ir_node *reference_addr(const reference_expression_t *ref)
1488 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1489 entity_t *entity = ref->entity;
1490 assert(is_declaration(entity));
1492 switch((declaration_kind_t) entity->declaration.kind) {
1493 case DECLARATION_KIND_UNKNOWN:
1495 case DECLARATION_KIND_LOCAL_VARIABLE:
1496 /* you can store to a local variable (so we don't panic but return NULL
1497 * as an indicator for no real address) */
1499 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1500 ir_node *const addr = get_global_var_address(dbgi, entity);
1503 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1504 ir_entity *irentity = entity->variable.v.entity;
1505 ir_node *frame = get_local_frame(irentity);
1506 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1511 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1512 return entity->variable.v.vla_base;
1514 case DECLARATION_KIND_FUNCTION: {
1515 type_t *const type = skip_typeref(entity->declaration.type);
1516 ir_mode *const mode = get_ir_mode(type);
1517 return create_symconst(dbgi, mode, entity->function.entity);
1520 case DECLARATION_KIND_INNER_FUNCTION:
1521 case DECLARATION_KIND_COMPOUND_MEMBER:
1522 panic("not implemented reference type");
1525 panic("reference to declaration with unknown type found");
1529 * Transform calls to builtin functions.
1531 static ir_node *process_builtin_call(const call_expression_t *call)
1533 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1535 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1536 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1538 type_t *type = skip_typeref(builtin->base.type);
1539 assert(is_type_pointer(type));
1541 type_t *function_type = skip_typeref(type->pointer.points_to);
1542 symbol_t *symbol = builtin->symbol;
1544 switch(symbol->ID) {
1545 case T___builtin_alloca: {
1546 if (call->arguments == NULL || call->arguments->next != NULL) {
1547 panic("invalid number of parameters on __builtin_alloca");
1549 expression_t *argument = call->arguments->expression;
1550 ir_node *size = expression_to_firm(argument);
1552 ir_node *store = get_store();
1553 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1555 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1557 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1562 case T___builtin_huge_val:
1563 case T___builtin_inf:
1564 case T___builtin_inff:
1565 case T___builtin_infl: {
1566 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1567 tarval *tv = get_mode_infinite(mode);
1568 ir_node *res = new_d_Const(dbgi, mode, tv);
1571 case T___builtin_nan:
1572 case T___builtin_nanf:
1573 case T___builtin_nanl: {
1574 /* Ignore string for now... */
1575 assert(is_type_function(function_type));
1576 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1577 tarval *tv = get_mode_NAN(mode);
1578 ir_node *res = new_d_Const(dbgi, mode, tv);
1581 case T___builtin_va_end:
1584 panic("Unsupported builtin found\n");
1589 * Transform a call expression.
1590 * Handles some special cases, like alloca() calls, which must be resolved
1591 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1592 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1595 static ir_node *call_expression_to_firm(const call_expression_t *call)
1597 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1598 assert(get_cur_block() != NULL);
1600 expression_t *function = call->function;
1601 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1602 return process_builtin_call(call);
1604 if (function->kind == EXPR_REFERENCE) {
1605 const reference_expression_t *ref = &function->reference;
1606 entity_t *entity = ref->entity;
1608 if (entity->kind == ENTITY_FUNCTION
1609 && entity->function.entity == rts_entities[rts_alloca]) {
1610 /* handle alloca() call */
1611 expression_t *argument = call->arguments->expression;
1612 ir_node *size = expression_to_firm(argument);
1614 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1616 ir_node *store = get_store();
1617 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1618 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1620 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1622 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1627 ir_node *callee = expression_to_firm(function);
1629 type_t *type = skip_typeref(function->base.type);
1630 assert(is_type_pointer(type));
1631 pointer_type_t *pointer_type = &type->pointer;
1632 type_t *points_to = skip_typeref(pointer_type->points_to);
1633 assert(is_type_function(points_to));
1634 function_type_t *function_type = &points_to->function;
1636 int n_parameters = 0;
1637 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1638 ir_type *new_method_type = NULL;
1639 if (function_type->variadic || function_type->unspecified_parameters) {
1640 const call_argument_t *argument = call->arguments;
1641 for ( ; argument != NULL; argument = argument->next) {
1645 /* we need to construct a new method type matching the call
1647 int n_res = get_method_n_ress(ir_method_type);
1648 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1649 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1650 n_parameters, n_res, dbgi);
1651 set_method_calling_convention(new_method_type,
1652 get_method_calling_convention(ir_method_type));
1653 set_method_additional_properties(new_method_type,
1654 get_method_additional_properties(ir_method_type));
1655 set_method_variadicity(new_method_type,
1656 get_method_variadicity(ir_method_type));
1658 for (int i = 0; i < n_res; ++i) {
1659 set_method_res_type(new_method_type, i,
1660 get_method_res_type(ir_method_type, i));
1662 argument = call->arguments;
1663 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1664 expression_t *expression = argument->expression;
1665 ir_type *irtype = get_ir_type(expression->base.type);
1666 set_method_param_type(new_method_type, i, irtype);
1668 ir_method_type = new_method_type;
1670 n_parameters = get_method_n_params(ir_method_type);
1673 ir_node *in[n_parameters];
1675 const call_argument_t *argument = call->arguments;
1676 for (int n = 0; n < n_parameters; ++n) {
1677 expression_t *expression = argument->expression;
1678 ir_node *arg_node = expression_to_firm(expression);
1680 arg_node = do_strict_conv(dbgi, arg_node);
1684 argument = argument->next;
1687 ir_node *store = get_store();
1688 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1690 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1693 type_t *return_type = skip_typeref(function_type->return_type);
1694 ir_node *result = NULL;
1696 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1698 if (is_type_scalar(return_type)) {
1699 mode = get_ir_mode(return_type);
1703 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1704 result = new_d_Proj(dbgi, resproj, mode, 0);
1707 if (function->kind == EXPR_REFERENCE &&
1708 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1709 /* A dead end: Keep the Call and the Block. Also place all further
1710 * nodes into a new and unreachable block. */
1712 keep_alive(get_cur_block());
1719 static void statement_to_firm(statement_t *statement);
1720 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1722 static ir_node *expression_to_addr(const expression_t *expression);
1723 static ir_node *create_condition_evaluation(const expression_t *expression,
1724 ir_node *true_block,
1725 ir_node *false_block);
1727 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1730 value = do_strict_conv(dbgi, value);
1732 ir_node *memory = get_store();
1734 if (is_type_scalar(type)) {
1735 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1736 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1737 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1738 set_Store_volatility(store, volatility_is_volatile);
1739 set_store(store_mem);
1741 ir_type *irtype = get_ir_type(type);
1742 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1743 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1744 set_store(copyb_mem);
1748 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1750 tarval *all_one = get_mode_all_one(mode);
1751 int mode_size = get_mode_size_bits(mode);
1753 assert(offset >= 0);
1755 assert(offset + size <= mode_size);
1756 if (size == mode_size) {
1760 long shiftr = get_mode_size_bits(mode) - size;
1761 long shiftl = offset;
1762 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1763 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1764 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1765 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1770 static void bitfield_store_to_firm(dbg_info *dbgi,
1771 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1773 ir_type *entity_type = get_entity_type(entity);
1774 ir_type *base_type = get_primitive_base_type(entity_type);
1775 assert(base_type != NULL);
1776 ir_mode *mode = get_type_mode(base_type);
1778 value = create_conv(dbgi, value, mode);
1780 /* kill upper bits of value and shift to right position */
1781 int bitoffset = get_entity_offset_bits_remainder(entity);
1782 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1784 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1785 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1786 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1787 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1788 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1789 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1791 /* load current value */
1792 ir_node *mem = get_store();
1793 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1794 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1795 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1796 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1797 tarval *inv_mask = tarval_not(shift_mask);
1798 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1799 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1801 /* construct new value and store */
1802 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1803 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1804 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1805 set_store(store_mem);
1808 set_Load_volatility(load, volatility_is_volatile);
1809 set_Store_volatility(store, volatility_is_volatile);
1813 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1816 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1817 type_t *type = expression->base.type;
1818 ir_mode *mode = get_ir_mode(type);
1819 ir_node *mem = get_store();
1820 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1821 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1822 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1824 load_res = create_conv(dbgi, load_res, mode_int);
1826 set_store(load_mem);
1828 /* kill upper bits */
1829 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1830 ir_entity *entity = expression->compound_entry->compound_member.entity;
1831 int bitoffset = get_entity_offset_bits_remainder(entity);
1832 ir_type *entity_type = get_entity_type(entity);
1833 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1834 long shift_bitsl = machine_size - bitoffset - bitsize;
1835 assert(shift_bitsl >= 0);
1836 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1837 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1838 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1840 long shift_bitsr = bitoffset + shift_bitsl;
1841 assert(shift_bitsr <= (long) machine_size);
1842 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1843 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1845 if (mode_is_signed(mode)) {
1846 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1848 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1851 return create_conv(dbgi, shiftr, mode);
1854 /* make sure the selected compound type is constructed */
1855 static void construct_select_compound(const select_expression_t *expression)
1857 type_t *type = skip_typeref(expression->compound->base.type);
1858 if (is_type_pointer(type)) {
1859 type = type->pointer.points_to;
1861 (void) get_ir_type(type);
1864 static void set_value_for_expression_addr(const expression_t *expression,
1865 ir_node *value, ir_node *addr)
1867 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1868 value = do_strict_conv(dbgi, value);
1870 if (expression->kind == EXPR_REFERENCE) {
1871 const reference_expression_t *ref = &expression->reference;
1873 entity_t *entity = ref->entity;
1874 assert(is_declaration(entity));
1875 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1876 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1877 set_value(entity->variable.v.value_number, value);
1883 addr = expression_to_addr(expression);
1885 type_t *type = skip_typeref(expression->base.type);
1887 if (expression->kind == EXPR_SELECT) {
1888 const select_expression_t *select = &expression->select;
1890 construct_select_compound(select);
1892 entity_t *entity = select->compound_entry;
1893 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1894 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1895 ir_entity *irentity = entity->compound_member.entity;
1897 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1898 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1903 assign_value(dbgi, addr, type, value);
1906 static void set_value_for_expression(const expression_t *expression,
1909 set_value_for_expression_addr(expression, value, NULL);
1912 static ir_node *get_value_from_lvalue(const expression_t *expression,
1915 if (expression->kind == EXPR_REFERENCE) {
1916 const reference_expression_t *ref = &expression->reference;
1918 entity_t *entity = ref->entity;
1919 assert(entity->kind == ENTITY_VARIABLE);
1920 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1921 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1922 assert(addr == NULL);
1923 ir_mode *mode = get_ir_mode(expression->base.type);
1924 return get_value(entity->variable.v.value_number, mode);
1928 assert(addr != NULL);
1929 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1932 if (expression->kind == EXPR_SELECT &&
1933 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1934 construct_select_compound(&expression->select);
1935 value = bitfield_extract_to_firm(&expression->select, addr);
1937 value = deref_address(dbgi, expression->base.type, addr);
1944 static ir_node *create_incdec(const unary_expression_t *expression)
1946 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1947 const expression_t *value_expr = expression->value;
1948 ir_node *addr = expression_to_addr(value_expr);
1949 ir_node *value = get_value_from_lvalue(value_expr, addr);
1951 type_t *type = skip_typeref(expression->base.type);
1952 ir_mode *mode = get_ir_mode(expression->base.type);
1955 if (is_type_pointer(type)) {
1956 pointer_type_t *pointer_type = &type->pointer;
1957 offset = get_type_size(pointer_type->points_to);
1959 assert(is_type_arithmetic(type));
1960 offset = new_Const(mode, get_mode_one(mode));
1964 ir_node *store_value;
1965 switch(expression->base.kind) {
1966 case EXPR_UNARY_POSTFIX_INCREMENT:
1968 store_value = new_d_Add(dbgi, value, offset, mode);
1970 case EXPR_UNARY_POSTFIX_DECREMENT:
1972 store_value = new_d_Sub(dbgi, value, offset, mode);
1974 case EXPR_UNARY_PREFIX_INCREMENT:
1975 result = new_d_Add(dbgi, value, offset, mode);
1976 store_value = result;
1978 case EXPR_UNARY_PREFIX_DECREMENT:
1979 result = new_d_Sub(dbgi, value, offset, mode);
1980 store_value = result;
1983 panic("no incdec expr in create_incdec");
1986 set_value_for_expression_addr(value_expr, store_value, addr);
1991 static bool is_local_variable(expression_t *expression)
1993 if (expression->kind != EXPR_REFERENCE)
1995 reference_expression_t *ref_expr = &expression->reference;
1996 entity_t *entity = ref_expr->entity;
1997 if (entity->kind != ENTITY_VARIABLE)
1999 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2000 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2003 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2006 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2007 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2008 case EXPR_BINARY_NOTEQUAL:
2009 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2010 case EXPR_BINARY_ISLESS:
2011 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2012 case EXPR_BINARY_ISLESSEQUAL:
2013 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2014 case EXPR_BINARY_ISGREATER:
2015 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2016 case EXPR_BINARY_ISGREATEREQUAL:
2017 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2018 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2023 panic("trying to get pn_Cmp from non-comparison binexpr type");
2027 * Handle the assume optimizer hint: check if a Confirm
2028 * node can be created.
2030 * @param dbi debug info
2031 * @param expr the IL assume expression
2033 * we support here only some simple cases:
2038 static ir_node *handle_assume_compare(dbg_info *dbi,
2039 const binary_expression_t *expression)
2041 expression_t *op1 = expression->left;
2042 expression_t *op2 = expression->right;
2043 entity_t *var2, *var = NULL;
2044 ir_node *res = NULL;
2047 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2049 if (is_local_variable(op1) && is_local_variable(op2)) {
2050 var = op1->reference.entity;
2051 var2 = op2->reference.entity;
2053 type_t *const type = skip_typeref(var->declaration.type);
2054 ir_mode *const mode = get_ir_mode(type);
2056 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2057 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2059 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2060 set_value(var2->variable.v.value_number, res);
2062 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2063 set_value(var->variable.v.value_number, res);
2069 if (is_local_variable(op1) && is_constant_expression(op2)) {
2070 var = op1->reference.entity;
2072 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2073 cmp_val = get_inversed_pnc(cmp_val);
2074 var = op2->reference.entity;
2079 type_t *const type = skip_typeref(var->declaration.type);
2080 ir_mode *const mode = get_ir_mode(type);
2082 res = get_value(var->variable.v.value_number, mode);
2083 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2084 set_value(var->variable.v.value_number, res);
2090 * Handle the assume optimizer hint.
2092 * @param dbi debug info
2093 * @param expr the IL assume expression
2095 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2096 switch(expression->kind) {
2097 case EXPR_BINARY_EQUAL:
2098 case EXPR_BINARY_NOTEQUAL:
2099 case EXPR_BINARY_LESS:
2100 case EXPR_BINARY_LESSEQUAL:
2101 case EXPR_BINARY_GREATER:
2102 case EXPR_BINARY_GREATEREQUAL:
2103 return handle_assume_compare(dbi, &expression->binary);
2109 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2111 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2112 type_t *type = skip_typeref(expression->base.type);
2114 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2115 return expression_to_addr(expression->value);
2117 const expression_t *value = expression->value;
2119 switch(expression->base.kind) {
2120 case EXPR_UNARY_NEGATE: {
2121 ir_node *value_node = expression_to_firm(value);
2122 ir_mode *mode = get_ir_mode(type);
2123 return new_d_Minus(dbgi, value_node, mode);
2125 case EXPR_UNARY_PLUS:
2126 return expression_to_firm(value);
2127 case EXPR_UNARY_BITWISE_NEGATE: {
2128 ir_node *value_node = expression_to_firm(value);
2129 ir_mode *mode = get_ir_mode(type);
2130 return new_d_Not(dbgi, value_node, mode);
2132 case EXPR_UNARY_NOT: {
2133 ir_node *value_node = _expression_to_firm(value);
2134 value_node = create_conv(dbgi, value_node, mode_b);
2135 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2138 case EXPR_UNARY_DEREFERENCE: {
2139 ir_node *value_node = expression_to_firm(value);
2140 type_t *value_type = skip_typeref(value->base.type);
2141 assert(is_type_pointer(value_type));
2142 type_t *points_to = value_type->pointer.points_to;
2143 return deref_address(dbgi, points_to, value_node);
2145 case EXPR_UNARY_POSTFIX_INCREMENT:
2146 case EXPR_UNARY_POSTFIX_DECREMENT:
2147 case EXPR_UNARY_PREFIX_INCREMENT:
2148 case EXPR_UNARY_PREFIX_DECREMENT:
2149 return create_incdec(expression);
2150 case EXPR_UNARY_CAST: {
2151 ir_node *value_node = expression_to_firm(value);
2152 if (is_type_scalar(type)) {
2153 ir_mode *mode = get_ir_mode(type);
2154 ir_node *node = create_conv(dbgi, value_node, mode);
2155 node = do_strict_conv(dbgi, node);
2158 /* make sure firm type is constructed */
2159 (void) get_ir_type(type);
2163 case EXPR_UNARY_CAST_IMPLICIT: {
2164 ir_node *value_node = expression_to_firm(value);
2165 if (is_type_scalar(type)) {
2166 ir_mode *mode = get_ir_mode(type);
2167 return create_conv(dbgi, value_node, mode);
2172 case EXPR_UNARY_ASSUME:
2173 if (firm_opt.confirm)
2174 return handle_assume(dbgi, value);
2181 panic("invalid UNEXPR type found");
2185 * produces a 0/1 depending of the value of a mode_b node
2187 static ir_node *produce_condition_result(const expression_t *expression,
2190 ir_mode *mode = get_ir_mode(expression->base.type);
2191 ir_node *cur_block = get_cur_block();
2193 ir_node *one_block = new_immBlock();
2194 ir_node *one = new_Const(mode, get_mode_one(mode));
2195 ir_node *jmp_one = new_d_Jmp(dbgi);
2197 ir_node *zero_block = new_immBlock();
2198 ir_node *zero = new_Const(mode, get_mode_null(mode));
2199 ir_node *jmp_zero = new_d_Jmp(dbgi);
2201 set_cur_block(cur_block);
2202 create_condition_evaluation(expression, one_block, zero_block);
2203 mature_immBlock(one_block);
2204 mature_immBlock(zero_block);
2206 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2207 new_Block(2, in_cf);
2209 ir_node *in[2] = { one, zero };
2210 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2215 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2216 ir_node *value, type_t *type)
2218 pointer_type_t *const pointer_type = &type->pointer;
2219 type_t *const points_to = skip_typeref(pointer_type->points_to);
2220 unsigned elem_size = get_type_size_const(points_to);
2222 /* gcc extension: allow arithmetic with void * and function * */
2223 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2224 is_type_function(points_to)) {
2228 assert(elem_size >= 1);
2232 value = create_conv(dbgi, value, mode_int);
2233 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2234 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2238 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2239 ir_node *left, ir_node *right)
2242 type_t *type_left = skip_typeref(expression->left->base.type);
2243 type_t *type_right = skip_typeref(expression->right->base.type);
2245 expression_kind_t kind = expression->base.kind;
2248 case EXPR_BINARY_SHIFTLEFT:
2249 case EXPR_BINARY_SHIFTRIGHT:
2250 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2251 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2252 mode = get_irn_mode(left);
2253 right = create_conv(dbgi, right, mode_uint);
2256 case EXPR_BINARY_SUB:
2257 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2258 const pointer_type_t *const ptr_type = &type_left->pointer;
2260 mode = get_ir_mode(expression->base.type);
2261 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2262 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2263 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2264 ir_node *const no_mem = new_NoMem();
2265 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2266 mode, op_pin_state_floats);
2267 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2270 case EXPR_BINARY_SUB_ASSIGN:
2271 if (is_type_pointer(type_left)) {
2272 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2273 mode = get_ir_mode(type_left);
2278 case EXPR_BINARY_ADD:
2279 case EXPR_BINARY_ADD_ASSIGN:
2280 if (is_type_pointer(type_left)) {
2281 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2282 mode = get_ir_mode(type_left);
2284 } else if (is_type_pointer(type_right)) {
2285 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2286 mode = get_ir_mode(type_right);
2293 mode = get_irn_mode(right);
2294 left = create_conv(dbgi, left, mode);
2299 case EXPR_BINARY_ADD_ASSIGN:
2300 case EXPR_BINARY_ADD:
2301 return new_d_Add(dbgi, left, right, mode);
2302 case EXPR_BINARY_SUB_ASSIGN:
2303 case EXPR_BINARY_SUB:
2304 return new_d_Sub(dbgi, left, right, mode);
2305 case EXPR_BINARY_MUL_ASSIGN:
2306 case EXPR_BINARY_MUL:
2307 return new_d_Mul(dbgi, left, right, mode);
2308 case EXPR_BINARY_BITWISE_AND:
2309 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2310 return new_d_And(dbgi, left, right, mode);
2311 case EXPR_BINARY_BITWISE_OR:
2312 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2313 return new_d_Or(dbgi, left, right, mode);
2314 case EXPR_BINARY_BITWISE_XOR:
2315 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2316 return new_d_Eor(dbgi, left, right, mode);
2317 case EXPR_BINARY_SHIFTLEFT:
2318 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2319 return new_d_Shl(dbgi, left, right, mode);
2320 case EXPR_BINARY_SHIFTRIGHT:
2321 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2322 if (mode_is_signed(mode)) {
2323 return new_d_Shrs(dbgi, left, right, mode);
2325 return new_d_Shr(dbgi, left, right, mode);
2327 case EXPR_BINARY_DIV:
2328 case EXPR_BINARY_DIV_ASSIGN: {
2329 ir_node *pin = new_Pin(new_NoMem());
2332 if (mode_is_float(mode)) {
2333 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2334 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2336 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2337 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2341 case EXPR_BINARY_MOD:
2342 case EXPR_BINARY_MOD_ASSIGN: {
2343 ir_node *pin = new_Pin(new_NoMem());
2344 assert(!mode_is_float(mode));
2345 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2346 op_pin_state_floats);
2347 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2351 panic("unexpected expression kind");
2355 static ir_node *create_lazy_op(const binary_expression_t *expression)
2357 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2358 type_t *type = expression->base.type;
2359 ir_mode *mode = get_ir_mode(type);
2361 if (is_constant_expression(expression->left)) {
2362 long val = fold_constant(expression->left);
2363 expression_kind_t ekind = expression->base.kind;
2364 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2365 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2366 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2367 return expression_to_firm(expression->right);
2369 return new_Const(mode, get_mode_one(mode));
2373 return produce_condition_result((const expression_t*) expression, dbgi);
2376 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2377 ir_node *right, ir_mode *mode);
2379 static ir_node *create_assign_binop(const binary_expression_t *expression)
2381 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2382 const expression_t *left_expr = expression->left;
2383 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2384 ir_node *right = expression_to_firm(expression->right);
2385 ir_node *left_addr = expression_to_addr(left_expr);
2386 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2387 ir_node *result = create_op(dbgi, expression, left, right);
2389 result = create_conv(dbgi, result, left_mode);
2390 result = do_strict_conv(dbgi, result);
2392 set_value_for_expression_addr(left_expr, result, left_addr);
2397 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2399 expression_kind_t kind = expression->base.kind;
2402 case EXPR_BINARY_EQUAL:
2403 case EXPR_BINARY_NOTEQUAL:
2404 case EXPR_BINARY_LESS:
2405 case EXPR_BINARY_LESSEQUAL:
2406 case EXPR_BINARY_GREATER:
2407 case EXPR_BINARY_GREATEREQUAL:
2408 case EXPR_BINARY_ISGREATER:
2409 case EXPR_BINARY_ISGREATEREQUAL:
2410 case EXPR_BINARY_ISLESS:
2411 case EXPR_BINARY_ISLESSEQUAL:
2412 case EXPR_BINARY_ISLESSGREATER:
2413 case EXPR_BINARY_ISUNORDERED: {
2414 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2415 ir_node *left = expression_to_firm(expression->left);
2416 ir_node *right = expression_to_firm(expression->right);
2417 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2418 long pnc = get_pnc(kind, expression->left->base.type);
2419 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2422 case EXPR_BINARY_ASSIGN: {
2423 ir_node *addr = expression_to_addr(expression->left);
2424 ir_node *right = expression_to_firm(expression->right);
2425 set_value_for_expression_addr(expression->left, right, addr);
2429 case EXPR_BINARY_ADD:
2430 case EXPR_BINARY_SUB:
2431 case EXPR_BINARY_MUL:
2432 case EXPR_BINARY_DIV:
2433 case EXPR_BINARY_MOD:
2434 case EXPR_BINARY_BITWISE_AND:
2435 case EXPR_BINARY_BITWISE_OR:
2436 case EXPR_BINARY_BITWISE_XOR:
2437 case EXPR_BINARY_SHIFTLEFT:
2438 case EXPR_BINARY_SHIFTRIGHT:
2440 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2441 ir_node *left = expression_to_firm(expression->left);
2442 ir_node *right = expression_to_firm(expression->right);
2443 return create_op(dbgi, expression, left, right);
2445 case EXPR_BINARY_LOGICAL_AND:
2446 case EXPR_BINARY_LOGICAL_OR:
2447 return create_lazy_op(expression);
2448 case EXPR_BINARY_COMMA:
2449 /* create side effects of left side */
2450 (void) expression_to_firm(expression->left);
2451 return _expression_to_firm(expression->right);
2453 case EXPR_BINARY_ADD_ASSIGN:
2454 case EXPR_BINARY_SUB_ASSIGN:
2455 case EXPR_BINARY_MUL_ASSIGN:
2456 case EXPR_BINARY_MOD_ASSIGN:
2457 case EXPR_BINARY_DIV_ASSIGN:
2458 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2459 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2460 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2461 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2462 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2463 return create_assign_binop(expression);
2464 case EXPR_BINARY_BUILTIN_EXPECT:
2465 return _expression_to_firm(expression->left);
2467 panic("TODO binexpr type");
2471 static ir_node *array_access_addr(const array_access_expression_t *expression)
2473 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2474 ir_node *base_addr = expression_to_firm(expression->array_ref);
2475 ir_node *offset = expression_to_firm(expression->index);
2477 type_t *offset_type = skip_typeref(expression->index->base.type);
2479 if (is_type_signed(offset_type)) {
2480 mode = get_ir_mode(type_ssize_t);
2482 mode = get_ir_mode(type_size_t);
2484 offset = create_conv(dbgi, offset, mode);
2486 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2487 assert(is_type_pointer(ref_type));
2488 pointer_type_t *pointer_type = &ref_type->pointer;
2490 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2491 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2492 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2494 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2499 static ir_node *array_access_to_firm(
2500 const array_access_expression_t *expression)
2502 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2503 ir_node *addr = array_access_addr(expression);
2504 type_t *type = revert_automatic_type_conversion(
2505 (const expression_t*) expression);
2506 type = skip_typeref(type);
2508 return deref_address(dbgi, type, addr);
2511 static long get_offsetof_offset(const offsetof_expression_t *expression)
2513 type_t *orig_type = expression->type;
2516 designator_t *designator = expression->designator;
2517 for ( ; designator != NULL; designator = designator->next) {
2518 type_t *type = skip_typeref(orig_type);
2519 /* be sure the type is constructed */
2520 (void) get_ir_type(type);
2522 if (designator->symbol != NULL) {
2523 assert(is_type_compound(type));
2524 symbol_t *symbol = designator->symbol;
2526 compound_t *compound = type->compound.compound;
2527 entity_t *iter = compound->members.entities;
2528 for ( ; iter != NULL; iter = iter->base.next) {
2529 if (iter->base.symbol == symbol) {
2533 assert(iter != NULL);
2535 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2536 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2537 offset += get_entity_offset(iter->compound_member.entity);
2539 orig_type = iter->declaration.type;
2541 expression_t *array_index = designator->array_index;
2542 assert(designator->array_index != NULL);
2543 assert(is_type_array(type));
2545 long index = fold_constant(array_index);
2546 ir_type *arr_type = get_ir_type(type);
2547 ir_type *elem_type = get_array_element_type(arr_type);
2548 long elem_size = get_type_size_bytes(elem_type);
2550 offset += index * elem_size;
2552 orig_type = type->array.element_type;
2559 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2561 ir_mode *mode = get_ir_mode(expression->base.type);
2562 long offset = get_offsetof_offset(expression);
2563 tarval *tv = new_tarval_from_long(offset, mode);
2564 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2566 return new_d_Const(dbgi, mode, tv);
2569 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2570 ir_entity *entity, type_t *type);
2572 static ir_node *compound_literal_to_firm(
2573 const compound_literal_expression_t *expression)
2575 type_t *type = expression->type;
2577 /* create an entity on the stack */
2578 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2580 ident *const id = id_unique("CompLit.%u");
2581 ir_type *const irtype = get_ir_type(type);
2582 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2583 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2584 set_entity_ld_ident(entity, id);
2586 set_entity_variability(entity, variability_uninitialized);
2588 /* create initialisation code */
2589 initializer_t *initializer = expression->initializer;
2590 create_local_initializer(initializer, dbgi, entity, type);
2592 /* create a sel for the compound literal address */
2593 ir_node *frame = get_local_frame(entity);
2594 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2599 * Transform a sizeof expression into Firm code.
2601 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2603 type_t *type = expression->type;
2605 type = expression->tp_expression->base.type;
2606 assert(type != NULL);
2609 type = skip_typeref(type);
2610 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2611 if (is_type_array(type) && type->array.is_vla
2612 && expression->tp_expression != NULL) {
2613 expression_to_firm(expression->tp_expression);
2616 return get_type_size(type);
2620 * Transform an alignof expression into Firm code.
2622 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2624 type_t *type = expression->type;
2626 /* beware: if expression is a variable reference, return the
2627 alignment of the variable. */
2628 const expression_t *tp_expression = expression->tp_expression;
2629 const entity_t *entity = expression_is_variable(tp_expression);
2630 if (entity != NULL) {
2631 /* TODO: get the alignment of this variable. */
2634 type = tp_expression->base.type;
2635 assert(type != NULL);
2638 ir_mode *const mode = get_ir_mode(expression->base.type);
2639 symconst_symbol sym;
2640 sym.type_p = get_ir_type(type);
2641 return new_SymConst(mode, sym, symconst_type_align);
2644 static void init_ir_types(void);
2646 long fold_constant(const expression_t *expression)
2648 assert(is_type_valid(skip_typeref(expression->base.type)));
2650 bool constant_folding_old = constant_folding;
2651 constant_folding = true;
2655 assert(is_constant_expression(expression));
2657 ir_graph *old_current_ir_graph = current_ir_graph;
2658 if (current_ir_graph == NULL) {
2659 current_ir_graph = get_const_code_irg();
2662 ir_node *cnst = expression_to_firm(expression);
2663 current_ir_graph = old_current_ir_graph;
2665 if (!is_Const(cnst)) {
2666 panic("couldn't fold constant\n");
2669 tarval *tv = get_Const_tarval(cnst);
2670 if (!tarval_is_long(tv)) {
2671 panic("result of constant folding is not integer\n");
2674 constant_folding = constant_folding_old;
2676 return get_tarval_long(tv);
2679 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2681 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2683 /* first try to fold a constant condition */
2684 if (is_constant_expression(expression->condition)) {
2685 long val = fold_constant(expression->condition);
2687 expression_t *true_expression = expression->true_expression;
2688 if (true_expression == NULL)
2689 true_expression = expression->condition;
2690 return expression_to_firm(true_expression);
2692 return expression_to_firm(expression->false_expression);
2696 ir_node *cur_block = get_cur_block();
2698 /* create the true block */
2699 ir_node *true_block = new_immBlock();
2701 ir_node *true_val = expression->true_expression != NULL ?
2702 expression_to_firm(expression->true_expression) : NULL;
2703 ir_node *true_jmp = new_Jmp();
2705 /* create the false block */
2706 ir_node *false_block = new_immBlock();
2708 ir_node *false_val = expression_to_firm(expression->false_expression);
2709 ir_node *false_jmp = new_Jmp();
2711 /* create the condition evaluation */
2712 set_cur_block(cur_block);
2713 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2714 if (expression->true_expression == NULL) {
2715 if (cond_expr != NULL) {
2716 true_val = cond_expr;
2718 /* Condition ended with a short circuit (&&, ||, !) operation.
2719 * Generate a "1" as value for the true branch. */
2720 ir_mode *const mode = mode_Is;
2721 true_val = new_Const(mode, get_mode_one(mode));
2724 mature_immBlock(true_block);
2725 mature_immBlock(false_block);
2727 /* create the common block */
2728 ir_node *in_cf[2] = { true_jmp, false_jmp };
2729 new_Block(2, in_cf);
2731 /* TODO improve static semantics, so either both or no values are NULL */
2732 if (true_val == NULL || false_val == NULL)
2735 ir_node *in[2] = { true_val, false_val };
2736 ir_mode *mode = get_irn_mode(true_val);
2737 assert(get_irn_mode(false_val) == mode);
2738 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2744 * Returns an IR-node representing the address of a field.
2746 static ir_node *select_addr(const select_expression_t *expression)
2748 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2750 construct_select_compound(expression);
2752 ir_node *compound_addr = expression_to_firm(expression->compound);
2754 entity_t *entry = expression->compound_entry;
2755 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2756 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2757 ir_entity *irentity = entry->compound_member.entity;
2759 assert(irentity != NULL);
2761 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2766 static ir_node *select_to_firm(const select_expression_t *expression)
2768 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2769 ir_node *addr = select_addr(expression);
2770 type_t *type = revert_automatic_type_conversion(
2771 (const expression_t*) expression);
2772 type = skip_typeref(type);
2774 entity_t *entry = expression->compound_entry;
2775 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2776 type_t *entry_type = skip_typeref(entry->declaration.type);
2778 if (entry_type->kind == TYPE_BITFIELD) {
2779 return bitfield_extract_to_firm(expression, addr);
2782 return deref_address(dbgi, type, addr);
2785 /* Values returned by __builtin_classify_type. */
2786 typedef enum gcc_type_class
2792 enumeral_type_class,
2795 reference_type_class,
2799 function_type_class,
2810 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2812 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2818 const atomic_type_t *const atomic_type = &type->atomic;
2819 switch (atomic_type->akind) {
2820 /* should not be reached */
2821 case ATOMIC_TYPE_INVALID:
2825 /* gcc cannot do that */
2826 case ATOMIC_TYPE_VOID:
2827 tc = void_type_class;
2830 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2831 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2832 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2833 case ATOMIC_TYPE_SHORT:
2834 case ATOMIC_TYPE_USHORT:
2835 case ATOMIC_TYPE_INT:
2836 case ATOMIC_TYPE_UINT:
2837 case ATOMIC_TYPE_LONG:
2838 case ATOMIC_TYPE_ULONG:
2839 case ATOMIC_TYPE_LONGLONG:
2840 case ATOMIC_TYPE_ULONGLONG:
2841 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2842 tc = integer_type_class;
2845 case ATOMIC_TYPE_FLOAT:
2846 case ATOMIC_TYPE_DOUBLE:
2847 case ATOMIC_TYPE_LONG_DOUBLE:
2848 tc = real_type_class;
2851 panic("Unexpected atomic type in classify_type_to_firm().");
2854 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2855 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2856 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2857 case TYPE_ARRAY: /* gcc handles this as pointer */
2858 case TYPE_FUNCTION: /* gcc handles this as pointer */
2859 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2860 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2861 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2863 /* gcc handles this as integer */
2864 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2867 /* typedef/typeof should be skipped already */
2874 panic("unexpected TYPE classify_type_to_firm().");
2877 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2878 ir_mode *const mode = mode_int;
2879 tarval *const tv = new_tarval_from_long(tc, mode);
2880 return new_d_Const(dbgi, mode, tv);
2883 static ir_node *function_name_to_firm(
2884 const funcname_expression_t *const expr)
2886 switch(expr->kind) {
2887 case FUNCNAME_FUNCTION:
2888 case FUNCNAME_PRETTY_FUNCTION:
2889 case FUNCNAME_FUNCDNAME:
2890 if (current_function_name == NULL) {
2891 const source_position_t *const src_pos = &expr->base.source_position;
2892 const char *name = current_function_entity->base.symbol->string;
2893 const string_t string = { name, strlen(name) + 1 };
2894 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2896 return current_function_name;
2897 case FUNCNAME_FUNCSIG:
2898 if (current_funcsig == NULL) {
2899 const source_position_t *const src_pos = &expr->base.source_position;
2900 ir_entity *ent = get_irg_entity(current_ir_graph);
2901 const char *const name = get_entity_ld_name(ent);
2902 const string_t string = { name, strlen(name) + 1 };
2903 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2905 return current_funcsig;
2907 panic("Unsupported function name");
2910 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2912 statement_t *statement = expr->statement;
2914 assert(statement->kind == STATEMENT_COMPOUND);
2915 return compound_statement_to_firm(&statement->compound);
2918 static ir_node *va_start_expression_to_firm(
2919 const va_start_expression_t *const expr)
2921 type_t *const type = current_function_entity->declaration.type;
2922 ir_type *const method_type = get_ir_type(type);
2923 int const n = get_method_n_params(method_type) - 1;
2924 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2925 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2926 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2927 ir_node *const no_mem = new_NoMem();
2928 ir_node *const arg_sel =
2929 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2931 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2932 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2933 set_value_for_expression(expr->ap, add);
2938 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2940 type_t *const type = expr->base.type;
2941 expression_t *const ap_expr = expr->ap;
2942 ir_node *const ap_addr = expression_to_addr(ap_expr);
2943 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2944 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2945 ir_node *const res = deref_address(dbgi, type, ap);
2947 ir_node *const cnst = get_type_size(expr->base.type);
2948 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2950 set_value_for_expression_addr(ap_expr, add, ap_addr);
2955 static ir_node *dereference_addr(const unary_expression_t *const expression)
2957 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2958 return expression_to_firm(expression->value);
2962 * Returns a IR-node representing an lvalue of the given expression.
2964 static ir_node *expression_to_addr(const expression_t *expression)
2966 switch(expression->kind) {
2967 case EXPR_REFERENCE:
2968 return reference_addr(&expression->reference);
2969 case EXPR_ARRAY_ACCESS:
2970 return array_access_addr(&expression->array_access);
2972 return select_addr(&expression->select);
2974 return call_expression_to_firm(&expression->call);
2975 case EXPR_UNARY_DEREFERENCE: {
2976 return dereference_addr(&expression->unary);
2981 panic("trying to get address of non-lvalue");
2984 static ir_node *builtin_constant_to_firm(
2985 const builtin_constant_expression_t *expression)
2987 ir_mode *mode = get_ir_mode(expression->base.type);
2990 if (is_constant_expression(expression->value)) {
2995 return new_Const_long(mode, v);
2998 static ir_node *builtin_prefetch_to_firm(
2999 const builtin_prefetch_expression_t *expression)
3001 ir_node *adr = expression_to_firm(expression->adr);
3002 /* no Firm support for prefetch yet */
3007 static ir_node *get_label_block(label_t *label)
3009 if (label->block != NULL)
3010 return label->block;
3012 /* beware: might be called from create initializer with current_ir_graph
3013 * set to const_code_irg. */
3014 ir_graph *rem = current_ir_graph;
3015 current_ir_graph = current_function;
3017 ir_node *old_cur_block = get_cur_block();
3018 ir_node *block = new_immBlock();
3019 set_cur_block(old_cur_block);
3021 label->block = block;
3023 ARR_APP1(label_t *, all_labels, label);
3025 current_ir_graph = rem;
3030 * Pointer to a label. This is used for the
3031 * GNU address-of-label extension.
3033 static ir_node *label_address_to_firm(
3034 const label_address_expression_t *label)
3036 ir_node *block = get_label_block(label->label);
3037 ir_label_t nr = get_Block_label(block);
3040 nr = get_irp_next_label_nr();
3041 set_Block_label(block, nr);
3043 symconst_symbol value;
3045 return new_SymConst(mode_P_code, value, symconst_label);
3049 * creates firm nodes for an expression. The difference between this function
3050 * and expression_to_firm is, that this version might produce mode_b nodes
3051 * instead of mode_Is.
3053 static ir_node *_expression_to_firm(const expression_t *expression)
3056 if (!constant_folding) {
3057 assert(!expression->base.transformed);
3058 ((expression_t*) expression)->base.transformed = true;
3062 switch (expression->kind) {
3063 case EXPR_CHARACTER_CONSTANT:
3064 return character_constant_to_firm(&expression->conste);
3065 case EXPR_WIDE_CHARACTER_CONSTANT:
3066 return wide_character_constant_to_firm(&expression->conste);
3068 return const_to_firm(&expression->conste);
3069 case EXPR_STRING_LITERAL:
3070 return string_literal_to_firm(&expression->string);
3071 case EXPR_WIDE_STRING_LITERAL:
3072 return wide_string_literal_to_firm(&expression->wide_string);
3073 case EXPR_REFERENCE:
3074 return reference_expression_to_firm(&expression->reference);
3075 case EXPR_REFERENCE_ENUM_VALUE:
3076 return reference_expression_enum_value_to_firm(&expression->reference);
3078 return call_expression_to_firm(&expression->call);
3080 return unary_expression_to_firm(&expression->unary);
3082 return binary_expression_to_firm(&expression->binary);
3083 case EXPR_ARRAY_ACCESS:
3084 return array_access_to_firm(&expression->array_access);
3086 return sizeof_to_firm(&expression->typeprop);
3088 return alignof_to_firm(&expression->typeprop);
3089 case EXPR_CONDITIONAL:
3090 return conditional_to_firm(&expression->conditional);
3092 return select_to_firm(&expression->select);
3093 case EXPR_CLASSIFY_TYPE:
3094 return classify_type_to_firm(&expression->classify_type);
3096 return function_name_to_firm(&expression->funcname);
3097 case EXPR_STATEMENT:
3098 return statement_expression_to_firm(&expression->statement);
3100 return va_start_expression_to_firm(&expression->va_starte);
3102 return va_arg_expression_to_firm(&expression->va_arge);
3103 case EXPR_BUILTIN_SYMBOL:
3104 panic("unimplemented expression found");
3105 case EXPR_BUILTIN_CONSTANT_P:
3106 return builtin_constant_to_firm(&expression->builtin_constant);
3107 case EXPR_BUILTIN_PREFETCH:
3108 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3110 return offsetof_to_firm(&expression->offsetofe);
3111 case EXPR_COMPOUND_LITERAL:
3112 return compound_literal_to_firm(&expression->compound_literal);
3113 case EXPR_LABEL_ADDRESS:
3114 return label_address_to_firm(&expression->label_address);
3120 panic("invalid expression found");
3123 static bool produces_mode_b(const expression_t *expression)
3125 switch (expression->kind) {
3126 case EXPR_BINARY_EQUAL:
3127 case EXPR_BINARY_NOTEQUAL:
3128 case EXPR_BINARY_LESS:
3129 case EXPR_BINARY_LESSEQUAL:
3130 case EXPR_BINARY_GREATER:
3131 case EXPR_BINARY_GREATEREQUAL:
3132 case EXPR_BINARY_ISGREATER:
3133 case EXPR_BINARY_ISGREATEREQUAL:
3134 case EXPR_BINARY_ISLESS:
3135 case EXPR_BINARY_ISLESSEQUAL:
3136 case EXPR_BINARY_ISLESSGREATER:
3137 case EXPR_BINARY_ISUNORDERED:
3138 case EXPR_UNARY_NOT:
3141 case EXPR_BINARY_BUILTIN_EXPECT:
3142 return produces_mode_b(expression->binary.left);
3143 case EXPR_BINARY_COMMA:
3144 return produces_mode_b(expression->binary.right);
3151 static ir_node *expression_to_firm(const expression_t *expression)
3153 if (!produces_mode_b(expression)) {
3154 ir_node *res = _expression_to_firm(expression);
3155 assert(res == NULL || get_irn_mode(res) != mode_b);
3159 if (is_constant_expression(expression)) {
3160 ir_node *res = _expression_to_firm(expression);
3161 ir_mode *mode = get_ir_mode(expression->base.type);
3162 assert(is_Const(res));
3163 if (is_Const_null(res)) {
3164 return new_Const_long(mode, 0);
3166 return new_Const_long(mode, 1);
3170 /* we have to produce a 0/1 from the mode_b expression */
3171 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3172 return produce_condition_result(expression, dbgi);
3176 * create a short-circuit expression evaluation that tries to construct
3177 * efficient control flow structures for &&, || and ! expressions
3179 static ir_node *create_condition_evaluation(const expression_t *expression,
3180 ir_node *true_block,
3181 ir_node *false_block)
3183 switch(expression->kind) {
3184 case EXPR_UNARY_NOT: {
3185 const unary_expression_t *unary_expression = &expression->unary;
3186 create_condition_evaluation(unary_expression->value, false_block,
3190 case EXPR_BINARY_LOGICAL_AND: {
3191 const binary_expression_t *binary_expression = &expression->binary;
3193 ir_node *cur_block = get_cur_block();
3194 ir_node *extra_block = new_immBlock();
3195 set_cur_block(cur_block);
3196 create_condition_evaluation(binary_expression->left, extra_block,
3198 mature_immBlock(extra_block);
3199 set_cur_block(extra_block);
3200 create_condition_evaluation(binary_expression->right, true_block,
3204 case EXPR_BINARY_LOGICAL_OR: {
3205 const binary_expression_t *binary_expression = &expression->binary;
3207 ir_node *cur_block = get_cur_block();
3208 ir_node *extra_block = new_immBlock();
3209 set_cur_block(cur_block);
3210 create_condition_evaluation(binary_expression->left, true_block,
3212 mature_immBlock(extra_block);
3213 set_cur_block(extra_block);
3214 create_condition_evaluation(binary_expression->right, true_block,
3222 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3223 ir_node *cond_expr = _expression_to_firm(expression);
3224 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3225 ir_node *cond = new_d_Cond(dbgi, condition);
3226 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3227 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3229 /* set branch prediction info based on __builtin_expect */
3230 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3231 long cnst = fold_constant(expression->binary.right);
3232 cond_jmp_predicate pred;
3235 pred = COND_JMP_PRED_FALSE;
3237 pred = COND_JMP_PRED_TRUE;
3239 set_Cond_jmp_pred(cond, pred);
3242 add_immBlock_pred(true_block, true_proj);
3243 if (false_block != NULL) {
3244 add_immBlock_pred(false_block, false_proj);
3247 set_cur_block(NULL);
3252 static void create_variable_entity(entity_t *variable,
3253 declaration_kind_t declaration_kind,
3254 ir_type *parent_type)
3256 assert(variable->kind == ENTITY_VARIABLE);
3257 type_t *const type = skip_typeref(variable->declaration.type);
3258 ident *const id = new_id_from_str(variable->base.symbol->string);
3259 ir_type *const irtype = get_ir_type(type);
3260 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3261 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3263 handle_gnu_attributes_ent(irentity, variable);
3265 variable->declaration.kind = (unsigned char) declaration_kind;
3266 variable->variable.v.entity = irentity;
3267 set_entity_variability(irentity, variability_uninitialized);
3268 set_entity_ld_ident(irentity, create_ld_ident(irentity, variable));
3269 if (parent_type == get_tls_type())
3270 set_entity_allocation(irentity, allocation_automatic);
3271 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3272 set_entity_allocation(irentity, allocation_static);
3274 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3275 set_entity_volatility(irentity, volatility_is_volatile);
3280 typedef struct type_path_entry_t type_path_entry_t;
3281 struct type_path_entry_t {
3283 ir_initializer_t *initializer;
3285 entity_t *compound_entry;
3288 typedef struct type_path_t type_path_t;
3289 struct type_path_t {
3290 type_path_entry_t *path;
3295 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3297 size_t len = ARR_LEN(path->path);
3299 for (size_t i = 0; i < len; ++i) {
3300 const type_path_entry_t *entry = & path->path[i];
3302 type_t *type = skip_typeref(entry->type);
3303 if (is_type_compound(type)) {
3304 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3305 } else if (is_type_array(type)) {
3306 fprintf(stderr, "[%zu]", entry->index);
3308 fprintf(stderr, "-INVALID-");
3311 fprintf(stderr, " (");
3312 print_type(path->top_type);
3313 fprintf(stderr, ")");
3316 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3318 size_t len = ARR_LEN(path->path);
3320 return & path->path[len-1];
3323 static type_path_entry_t *append_to_type_path(type_path_t *path)
3325 size_t len = ARR_LEN(path->path);
3326 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3328 type_path_entry_t *result = & path->path[len];
3329 memset(result, 0, sizeof(result[0]));
3333 static size_t get_compound_member_count(const compound_type_t *type)
3335 compound_t *compound = type->compound;
3336 size_t n_members = 0;
3337 entity_t *member = compound->members.entities;
3338 for ( ; member != NULL; member = member->base.next) {
3345 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3347 type_t *orig_top_type = path->top_type;
3348 type_t *top_type = skip_typeref(orig_top_type);
3350 assert(is_type_compound(top_type) || is_type_array(top_type));
3352 if (ARR_LEN(path->path) == 0) {
3355 type_path_entry_t *top = get_type_path_top(path);
3356 ir_initializer_t *initializer = top->initializer;
3357 return get_initializer_compound_value(initializer, top->index);
3361 static void descend_into_subtype(type_path_t *path)
3363 type_t *orig_top_type = path->top_type;
3364 type_t *top_type = skip_typeref(orig_top_type);
3366 assert(is_type_compound(top_type) || is_type_array(top_type));
3368 ir_initializer_t *initializer = get_initializer_entry(path);
3370 type_path_entry_t *top = append_to_type_path(path);
3371 top->type = top_type;
3375 if (is_type_compound(top_type)) {
3376 compound_t *compound = top_type->compound.compound;
3377 entity_t *entry = compound->members.entities;
3379 top->compound_entry = entry;
3381 len = get_compound_member_count(&top_type->compound);
3382 if (entry != NULL) {
3383 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3384 path->top_type = entry->declaration.type;
3387 assert(is_type_array(top_type));
3388 assert(top_type->array.size > 0);
3391 path->top_type = top_type->array.element_type;
3392 len = top_type->array.size;
3394 if (initializer == NULL
3395 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3396 initializer = create_initializer_compound(len);
3397 /* we have to set the entry at the 2nd latest path entry... */
3398 size_t path_len = ARR_LEN(path->path);
3399 assert(path_len >= 1);
3401 type_path_entry_t *entry = & path->path[path_len-2];
3402 ir_initializer_t *tinitializer = entry->initializer;
3403 set_initializer_compound_value(tinitializer, entry->index,
3407 top->initializer = initializer;
3410 static void ascend_from_subtype(type_path_t *path)
3412 type_path_entry_t *top = get_type_path_top(path);
3414 path->top_type = top->type;
3416 size_t len = ARR_LEN(path->path);
3417 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3420 static void walk_designator(type_path_t *path, const designator_t *designator)
3422 /* designators start at current object type */
3423 ARR_RESIZE(type_path_entry_t, path->path, 1);
3425 for ( ; designator != NULL; designator = designator->next) {
3426 type_path_entry_t *top = get_type_path_top(path);
3427 type_t *orig_type = top->type;
3428 type_t *type = skip_typeref(orig_type);
3430 if (designator->symbol != NULL) {
3431 assert(is_type_compound(type));
3433 symbol_t *symbol = designator->symbol;
3435 compound_t *compound = type->compound.compound;
3436 entity_t *iter = compound->members.entities;
3437 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3438 if (iter->base.symbol == symbol) {
3439 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3443 assert(iter != NULL);
3445 top->type = orig_type;
3446 top->compound_entry = iter;
3448 orig_type = iter->declaration.type;
3450 expression_t *array_index = designator->array_index;
3451 assert(designator->array_index != NULL);
3452 assert(is_type_array(type));
3454 long index = fold_constant(array_index);
3457 if (type->array.size_constant) {
3458 long array_size = type->array.size;
3459 assert(index < array_size);
3463 top->type = orig_type;
3464 top->index = (size_t) index;
3465 orig_type = type->array.element_type;
3467 path->top_type = orig_type;
3469 if (designator->next != NULL) {
3470 descend_into_subtype(path);
3474 path->invalid = false;
3477 static void advance_current_object(type_path_t *path)
3479 if (path->invalid) {
3480 /* TODO: handle this... */
3481 panic("invalid initializer in ast2firm (excessive elements)");
3485 type_path_entry_t *top = get_type_path_top(path);
3487 type_t *type = skip_typeref(top->type);
3488 if (is_type_union(type)) {
3489 top->compound_entry = NULL;
3490 } else if (is_type_struct(type)) {
3491 entity_t *entry = top->compound_entry;
3494 entry = entry->base.next;
3495 top->compound_entry = entry;
3496 if (entry != NULL) {
3497 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3498 path->top_type = entry->declaration.type;
3502 assert(is_type_array(type));
3505 if (!type->array.size_constant || top->index < type->array.size) {
3510 /* we're past the last member of the current sub-aggregate, try if we
3511 * can ascend in the type hierarchy and continue with another subobject */
3512 size_t len = ARR_LEN(path->path);
3515 ascend_from_subtype(path);
3516 advance_current_object(path);
3518 path->invalid = true;
3523 static ir_initializer_t *create_ir_initializer(
3524 const initializer_t *initializer, type_t *type);
3526 static ir_initializer_t *create_ir_initializer_value(
3527 const initializer_value_t *initializer)
3529 if (is_type_compound(initializer->value->base.type)) {
3530 panic("initializer creation for compounds not implemented yet");
3532 ir_node *value = expression_to_firm(initializer->value);
3533 return create_initializer_const(value);
3536 static ir_initializer_t *create_ir_initializer_list(
3537 const initializer_list_t *initializer, type_t *type)
3540 memset(&path, 0, sizeof(path));
3541 path.top_type = type;
3542 path.path = NEW_ARR_F(type_path_entry_t, 0);
3544 descend_into_subtype(&path);
3546 for (size_t i = 0; i < initializer->len; ++i) {
3547 const initializer_t *sub_initializer = initializer->initializers[i];
3549 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3550 walk_designator(&path, sub_initializer->designator.designator);
3554 if (sub_initializer->kind == INITIALIZER_VALUE) {
3555 /* we might have to descend into types until we're at a scalar
3558 type_t *orig_top_type = path.top_type;
3559 type_t *top_type = skip_typeref(orig_top_type);
3561 if (is_type_scalar(top_type))
3563 descend_into_subtype(&path);
3567 ir_initializer_t *sub_irinitializer
3568 = create_ir_initializer(sub_initializer, path.top_type);
3570 size_t path_len = ARR_LEN(path.path);
3571 assert(path_len >= 1);
3572 type_path_entry_t *entry = & path.path[path_len-1];
3573 ir_initializer_t *tinitializer = entry->initializer;
3574 set_initializer_compound_value(tinitializer, entry->index,
3577 advance_current_object(&path);
3580 assert(ARR_LEN(path.path) >= 1);
3581 ir_initializer_t *result = path.path[0].initializer;
3582 DEL_ARR_F(path.path);
3587 static ir_initializer_t *create_ir_initializer_string(
3588 const initializer_string_t *initializer, type_t *type)
3590 type = skip_typeref(type);
3592 size_t string_len = initializer->string.size;
3593 assert(type->kind == TYPE_ARRAY);
3594 assert(type->array.size_constant);
3595 size_t len = type->array.size;
3596 ir_initializer_t *irinitializer = create_initializer_compound(len);
3598 const char *string = initializer->string.begin;
3599 ir_mode *mode = get_ir_mode(type->array.element_type);
3601 for (size_t i = 0; i < len; ++i) {
3606 tarval *tv = new_tarval_from_long(c, mode);
3607 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3609 set_initializer_compound_value(irinitializer, i, char_initializer);
3612 return irinitializer;
3615 static ir_initializer_t *create_ir_initializer_wide_string(
3616 const initializer_wide_string_t *initializer, type_t *type)
3618 size_t string_len = initializer->string.size;
3619 assert(type->kind == TYPE_ARRAY);
3620 assert(type->array.size_constant);
3621 size_t len = type->array.size;
3622 ir_initializer_t *irinitializer = create_initializer_compound(len);
3624 const wchar_rep_t *string = initializer->string.begin;
3625 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3627 for (size_t i = 0; i < len; ++i) {
3629 if (i < string_len) {
3632 tarval *tv = new_tarval_from_long(c, mode);
3633 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3635 set_initializer_compound_value(irinitializer, i, char_initializer);
3638 return irinitializer;
3641 static ir_initializer_t *create_ir_initializer(
3642 const initializer_t *initializer, type_t *type)
3644 switch(initializer->kind) {
3645 case INITIALIZER_STRING:
3646 return create_ir_initializer_string(&initializer->string, type);
3648 case INITIALIZER_WIDE_STRING:
3649 return create_ir_initializer_wide_string(&initializer->wide_string,
3652 case INITIALIZER_LIST:
3653 return create_ir_initializer_list(&initializer->list, type);
3655 case INITIALIZER_VALUE:
3656 return create_ir_initializer_value(&initializer->value);
3658 case INITIALIZER_DESIGNATOR:
3659 panic("unexpected designator initializer found");
3661 panic("unknown initializer");
3664 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3667 if (is_atomic_type(type)) {
3668 ir_mode *mode = get_type_mode(type);
3669 tarval *zero = get_mode_null(mode);
3670 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3672 /* TODO: bitfields */
3673 ir_node *mem = get_store();
3674 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3675 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3678 assert(is_compound_type(type));
3681 if (is_Array_type(type)) {
3682 assert(has_array_upper_bound(type, 0));
3683 n_members = get_array_upper_bound_int(type, 0);
3685 n_members = get_compound_n_members(type);
3688 for (int i = 0; i < n_members; ++i) {
3691 if (is_Array_type(type)) {
3692 ir_entity *entity = get_array_element_entity(type);
3693 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3694 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3695 ir_node *in[1] = { cnst };
3696 irtype = get_array_element_type(type);
3697 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3699 ir_entity *member = get_compound_member(type, i);
3701 irtype = get_entity_type(member);
3702 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3705 create_dynamic_null_initializer(irtype, dbgi, addr);
3710 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3711 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3713 switch(get_initializer_kind(initializer)) {
3714 case IR_INITIALIZER_NULL: {
3715 create_dynamic_null_initializer(type, dbgi, base_addr);
3718 case IR_INITIALIZER_CONST: {
3719 ir_node *node = get_initializer_const_value(initializer);
3720 ir_mode *mode = get_irn_mode(node);
3721 ir_type *ent_type = get_entity_type(entity);
3723 /* is it a bitfield type? */
3724 if (is_Primitive_type(ent_type) &&
3725 get_primitive_base_type(ent_type) != NULL) {
3726 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3730 assert(get_type_mode(type) == mode);
3731 ir_node *mem = get_store();
3732 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3733 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3737 case IR_INITIALIZER_TARVAL: {
3738 tarval *tv = get_initializer_tarval_value(initializer);
3739 ir_mode *mode = get_tarval_mode(tv);
3740 ir_node *cnst = new_d_Const(dbgi, mode, tv);
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, cnst, 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, cnst);
3753 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3757 case IR_INITIALIZER_COMPOUND: {
3758 assert(is_compound_type(type));
3760 if (is_Array_type(type)) {
3761 assert(has_array_upper_bound(type, 0));
3762 n_members = get_array_upper_bound_int(type, 0);
3764 n_members = get_compound_n_members(type);
3767 if (get_initializer_compound_n_entries(initializer)
3768 != (unsigned) n_members)
3769 panic("initializer doesn't match compound type");
3771 for (int i = 0; i < n_members; ++i) {
3774 ir_entity *sub_entity;
3775 if (is_Array_type(type)) {
3776 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3777 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3778 ir_node *in[1] = { cnst };
3779 irtype = get_array_element_type(type);
3780 sub_entity = get_array_element_entity(type);
3781 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3784 sub_entity = get_compound_member(type, i);
3785 irtype = get_entity_type(sub_entity);
3786 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3790 ir_initializer_t *sub_init
3791 = get_initializer_compound_value(initializer, i);
3793 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3800 panic("invalid IR_INITIALIZER found");
3803 static void create_dynamic_initializer(ir_initializer_t *initializer,
3804 dbg_info *dbgi, ir_entity *entity)
3806 ir_node *frame = get_local_frame(entity);
3807 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3808 ir_type *type = get_entity_type(entity);
3810 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3813 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3814 ir_entity *entity, type_t *type)
3816 ir_node *memory = get_store();
3817 ir_node *nomem = new_NoMem();
3818 ir_node *frame = get_irg_frame(current_ir_graph);
3819 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3821 if (initializer->kind == INITIALIZER_VALUE) {
3822 initializer_value_t *initializer_value = &initializer->value;
3824 ir_node *value = expression_to_firm(initializer_value->value);
3825 type = skip_typeref(type);
3826 assign_value(dbgi, addr, type, value);
3830 if (!is_constant_initializer(initializer)) {
3831 ir_initializer_t *irinitializer
3832 = create_ir_initializer(initializer, type);
3834 create_dynamic_initializer(irinitializer, dbgi, entity);
3838 /* create the ir_initializer */
3839 ir_graph *const old_current_ir_graph = current_ir_graph;
3840 current_ir_graph = get_const_code_irg();
3842 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3844 assert(current_ir_graph == get_const_code_irg());
3845 current_ir_graph = old_current_ir_graph;
3847 /* create a "template" entity which is copied to the entity on the stack */
3848 ident *const id = id_unique("initializer.%u");
3849 ir_type *const irtype = get_ir_type(type);
3850 ir_type *const global_type = get_glob_type();
3851 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3852 set_entity_ld_ident(init_entity, id);
3854 set_entity_variability(init_entity, variability_initialized);
3855 set_entity_visibility(init_entity, visibility_local);
3856 set_entity_allocation(init_entity, allocation_static);
3858 set_entity_initializer(init_entity, irinitializer);
3860 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3861 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3863 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3864 set_store(copyb_mem);
3867 static void create_initializer_local_variable_entity(entity_t *entity)
3869 assert(entity->kind == ENTITY_VARIABLE);
3870 initializer_t *initializer = entity->variable.initializer;
3871 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3872 ir_entity *irentity = entity->variable.v.entity;
3873 type_t *type = entity->declaration.type;
3874 create_local_initializer(initializer, dbgi, irentity, type);
3877 static void create_variable_initializer(entity_t *entity)
3879 assert(entity->kind == ENTITY_VARIABLE);
3880 initializer_t *initializer = entity->variable.initializer;
3881 if (initializer == NULL)
3884 declaration_kind_t declaration_kind
3885 = (declaration_kind_t) entity->declaration.kind;
3886 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3887 create_initializer_local_variable_entity(entity);
3891 type_t *type = entity->declaration.type;
3892 type_qualifiers_t tq = get_type_qualifier(type, true);
3894 if (initializer->kind == INITIALIZER_VALUE) {
3895 initializer_value_t *initializer_value = &initializer->value;
3896 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3898 ir_node *value = expression_to_firm(initializer_value->value);
3899 value = do_strict_conv(dbgi, value);
3901 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3902 set_value(entity->variable.v.value_number, value);
3904 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3906 ir_entity *irentity = entity->variable.v.entity;
3908 if (tq & TYPE_QUALIFIER_CONST) {
3909 set_entity_variability(irentity, variability_constant);
3911 set_entity_variability(irentity, variability_initialized);
3913 set_atomic_ent_value(irentity, value);
3916 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3917 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3919 ir_entity *irentity = entity->variable.v.entity;
3920 ir_initializer_t *irinitializer
3921 = create_ir_initializer(initializer, type);
3923 if (tq & TYPE_QUALIFIER_CONST) {
3924 set_entity_variability(irentity, variability_constant);
3926 set_entity_variability(irentity, variability_initialized);
3928 set_entity_initializer(irentity, irinitializer);
3932 static void create_variable_length_array(entity_t *entity)
3934 assert(entity->kind == ENTITY_VARIABLE);
3935 assert(entity->variable.initializer == NULL);
3937 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3938 entity->variable.v.vla_base = NULL;
3940 /* TODO: record VLA somewhere so we create the free node when we leave
3944 static void allocate_variable_length_array(entity_t *entity)
3946 assert(entity->kind == ENTITY_VARIABLE);
3947 assert(entity->variable.initializer == NULL);
3948 assert(get_cur_block() != NULL);
3950 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3951 type_t *type = entity->declaration.type;
3952 ir_type *el_type = get_ir_type(type->array.element_type);
3954 /* make sure size_node is calculated */
3955 get_type_size(type);
3956 ir_node *elems = type->array.size_node;
3957 ir_node *mem = get_store();
3958 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3960 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3961 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3964 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3965 entity->variable.v.vla_base = addr;
3969 * Creates a Firm local variable from a declaration.
3971 static void create_local_variable(entity_t *entity)
3973 assert(entity->kind == ENTITY_VARIABLE);
3974 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
3976 bool needs_entity = entity->variable.address_taken;
3977 type_t *type = skip_typeref(entity->declaration.type);
3979 /* is it a variable length array? */
3980 if (is_type_array(type) && !type->array.size_constant) {
3981 create_variable_length_array(entity);
3983 } else if (is_type_array(type) || is_type_compound(type)) {
3984 needs_entity = true;
3985 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3986 needs_entity = true;
3990 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3991 create_variable_entity(entity,
3992 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3995 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
3996 entity->variable.v.value_number = next_value_number_function;
3997 set_irg_loc_description(current_ir_graph, next_value_number_function,
3998 (variable_t*) &entity->variable);
3999 ++next_value_number_function;
4003 static void create_local_static_variable(entity_t *entity)
4005 assert(entity->kind == ENTITY_VARIABLE);
4006 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4008 type_t *const type = skip_typeref(entity->declaration.type);
4009 ir_type *const global_type = get_glob_type();
4010 ir_type *const irtype = get_ir_type(type);
4011 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4013 size_t l = strlen(entity->base.symbol->string);
4014 char buf[l + sizeof(".%u")];
4015 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4016 ident *const id = id_unique(buf);
4018 ir_entity *const irentity = new_d_entity(global_type, id, irtype, dbgi);
4020 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4021 set_entity_volatility(irentity, volatility_is_volatile);
4024 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4025 entity->variable.v.entity = irentity;
4026 set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
4027 set_entity_variability(irentity, variability_uninitialized);
4028 set_entity_visibility(irentity, visibility_local);
4029 set_entity_allocation(irentity, allocation_static);
4031 ir_graph *const old_current_ir_graph = current_ir_graph;
4032 current_ir_graph = get_const_code_irg();
4034 create_variable_initializer(entity);
4036 assert(current_ir_graph == get_const_code_irg());
4037 current_ir_graph = old_current_ir_graph;
4042 static void return_statement_to_firm(return_statement_t *statement)
4044 if (get_cur_block() == NULL)
4047 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4048 type_t *type = current_function_entity->declaration.type;
4049 ir_type *func_irtype = get_ir_type(type);
4054 if (get_method_n_ress(func_irtype) > 0) {
4055 ir_type *res_type = get_method_res_type(func_irtype, 0);
4057 if (statement->value != NULL) {
4058 ir_node *node = expression_to_firm(statement->value);
4059 node = do_strict_conv(dbgi, node);
4063 if (is_compound_type(res_type)) {
4066 mode = get_type_mode(res_type);
4068 in[0] = new_Unknown(mode);
4072 /* build return_value for its side effects */
4073 if (statement->value != NULL) {
4074 expression_to_firm(statement->value);
4079 ir_node *store = get_store();
4080 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4082 ir_node *end_block = get_irg_end_block(current_ir_graph);
4083 add_immBlock_pred(end_block, ret);
4085 set_cur_block(NULL);
4088 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4090 if (get_cur_block() == NULL)
4093 return expression_to_firm(statement->expression);
4096 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4098 entity_t *entity = compound->scope.entities;
4099 for ( ; entity != NULL; entity = entity->base.next) {
4100 if (!is_declaration(entity))
4103 create_local_declaration(entity);
4106 ir_node *result = NULL;
4107 statement_t *statement = compound->statements;
4108 for ( ; statement != NULL; statement = statement->base.next) {
4109 if (statement->base.next == NULL
4110 && statement->kind == STATEMENT_EXPRESSION) {
4111 result = expression_statement_to_firm(
4112 &statement->expression);
4115 statement_to_firm(statement);
4121 static void create_global_variable(entity_t *entity)
4123 assert(entity->kind == ENTITY_VARIABLE);
4127 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4128 case STORAGE_CLASS_STATIC:
4129 vis = visibility_local;
4132 case STORAGE_CLASS_EXTERN:
4133 vis = visibility_external_allocated;
4136 case STORAGE_CLASS_NONE:
4137 vis = visibility_external_visible;
4140 case STORAGE_CLASS_THREAD:
4141 vis = visibility_external_visible;
4144 case STORAGE_CLASS_THREAD_EXTERN:
4145 vis = visibility_external_allocated;
4148 case STORAGE_CLASS_THREAD_STATIC:
4149 vis = visibility_local;
4153 var_type = get_tls_type();
4157 var_type = get_glob_type();
4161 create_variable_entity(entity,
4162 DECLARATION_KIND_GLOBAL_VARIABLE,
4164 /* Matze: I'm confused, shouldn't we only be here when creating
4167 if (!is_type_function(skip_typeref(entity->declaration.type))) {
4168 set_entity_visibility(declaration->v.entity, vis);
4171 set_entity_visibility(entity->variable.v.entity, vis);
4176 case STORAGE_CLASS_TYPEDEF:
4177 case STORAGE_CLASS_AUTO:
4178 case STORAGE_CLASS_REGISTER:
4181 panic("Invalid storage class for global variable");
4184 static void create_local_declaration(entity_t *entity)
4186 assert(is_declaration(entity));
4188 /* construct type */
4189 (void) get_ir_type(entity->declaration.type);
4190 if (entity->base.symbol == NULL) {
4194 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4195 case STORAGE_CLASS_STATIC:
4196 create_local_static_variable(entity);
4198 case STORAGE_CLASS_EXTERN:
4199 if (entity->kind == ENTITY_FUNCTION) {
4200 assert(entity->function.statement == NULL);
4201 get_function_entity(entity);
4203 create_global_variable(entity);
4204 create_variable_initializer(entity);
4207 case STORAGE_CLASS_NONE:
4208 case STORAGE_CLASS_AUTO:
4209 case STORAGE_CLASS_REGISTER:
4210 if (entity->kind == ENTITY_FUNCTION) {
4211 if (entity->function.statement != NULL) {
4212 get_function_entity(entity);
4213 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4214 enqueue_inner_function(entity);
4216 get_function_entity(entity);
4219 create_local_variable(entity);
4222 case STORAGE_CLASS_TYPEDEF:
4223 case STORAGE_CLASS_THREAD:
4224 case STORAGE_CLASS_THREAD_EXTERN:
4225 case STORAGE_CLASS_THREAD_STATIC:
4228 panic("invalid storage class found");
4231 static void initialize_local_declaration(entity_t *entity)
4233 if (entity->base.symbol == NULL)
4236 switch ((declaration_kind_t) entity->declaration.kind) {
4237 case DECLARATION_KIND_LOCAL_VARIABLE:
4238 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4239 create_variable_initializer(entity);
4242 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4243 allocate_variable_length_array(entity);
4246 case DECLARATION_KIND_COMPOUND_MEMBER:
4247 case DECLARATION_KIND_GLOBAL_VARIABLE:
4248 case DECLARATION_KIND_FUNCTION:
4249 case DECLARATION_KIND_INNER_FUNCTION:
4252 case DECLARATION_KIND_UNKNOWN:
4253 panic("can't initialize unknown declaration");
4255 panic("invalid declaration kind");
4258 static void declaration_statement_to_firm(declaration_statement_t *statement)
4260 entity_t *entity = statement->declarations_begin;
4261 entity_t *end = statement->declarations_end->base.next;
4262 for ( ; entity != end; entity = entity->base.next) {
4263 if (!is_declaration(entity))
4265 initialize_local_declaration(entity);
4269 static void if_statement_to_firm(if_statement_t *statement)
4271 ir_node *cur_block = get_cur_block();
4273 ir_node *fallthrough_block = NULL;
4275 /* the true (blocks) */
4276 ir_node *true_block = NULL;
4277 if (statement->true_statement != NULL) {
4278 true_block = new_immBlock();
4279 statement_to_firm(statement->true_statement);
4280 if (get_cur_block() != NULL) {
4281 ir_node *jmp = new_Jmp();
4282 if (fallthrough_block == NULL)
4283 fallthrough_block = new_immBlock();
4284 add_immBlock_pred(fallthrough_block, jmp);
4288 /* the false (blocks) */
4289 ir_node *false_block = NULL;
4290 if (statement->false_statement != NULL) {
4291 false_block = new_immBlock();
4293 statement_to_firm(statement->false_statement);
4294 if (get_cur_block() != NULL) {
4295 ir_node *jmp = new_Jmp();
4296 if (fallthrough_block == NULL)
4297 fallthrough_block = new_immBlock();
4298 add_immBlock_pred(fallthrough_block, jmp);
4302 /* create the condition */
4303 if (cur_block != NULL) {
4304 if (true_block == NULL || false_block == NULL) {
4305 if (fallthrough_block == NULL)
4306 fallthrough_block = new_immBlock();
4307 if (true_block == NULL)
4308 true_block = fallthrough_block;
4309 if (false_block == NULL)
4310 false_block = fallthrough_block;
4313 set_cur_block(cur_block);
4314 create_condition_evaluation(statement->condition, true_block,
4318 mature_immBlock(true_block);
4319 if (false_block != fallthrough_block && false_block != NULL) {
4320 mature_immBlock(false_block);
4322 if (fallthrough_block != NULL) {
4323 mature_immBlock(fallthrough_block);
4326 set_cur_block(fallthrough_block);
4329 static void while_statement_to_firm(while_statement_t *statement)
4331 ir_node *jmp = NULL;
4332 if (get_cur_block() != NULL) {
4336 /* create the header block */
4337 ir_node *header_block = new_immBlock();
4339 add_immBlock_pred(header_block, jmp);
4343 ir_node *old_continue_label = continue_label;
4344 ir_node *old_break_label = break_label;
4345 continue_label = header_block;
4348 ir_node *body_block = new_immBlock();
4349 statement_to_firm(statement->body);
4350 ir_node *false_block = break_label;
4352 assert(continue_label == header_block);
4353 continue_label = old_continue_label;
4354 break_label = old_break_label;
4356 if (get_cur_block() != NULL) {
4358 add_immBlock_pred(header_block, jmp);
4361 /* shortcut for while(true) */
4362 if (is_constant_expression(statement->condition)
4363 && fold_constant(statement->condition) != 0) {
4364 set_cur_block(header_block);
4365 ir_node *header_jmp = new_Jmp();
4366 add_immBlock_pred(body_block, header_jmp);
4368 keep_alive(body_block);
4369 keep_all_memory(body_block);
4370 set_cur_block(body_block);
4372 if (false_block == NULL) {
4373 false_block = new_immBlock();
4376 /* create the condition */
4377 set_cur_block(header_block);
4379 create_condition_evaluation(statement->condition, body_block,
4383 mature_immBlock(body_block);
4384 mature_immBlock(header_block);
4385 if (false_block != NULL) {
4386 mature_immBlock(false_block);
4389 set_cur_block(false_block);
4392 static void do_while_statement_to_firm(do_while_statement_t *statement)
4394 ir_node *jmp = NULL;
4395 if (get_cur_block() != NULL) {
4399 /* create the header block */
4400 ir_node *header_block = new_immBlock();
4403 ir_node *body_block = new_immBlock();
4405 add_immBlock_pred(body_block, jmp);
4408 ir_node *old_continue_label = continue_label;
4409 ir_node *old_break_label = break_label;
4410 continue_label = header_block;
4413 statement_to_firm(statement->body);
4414 ir_node *false_block = break_label;
4416 assert(continue_label == header_block);
4417 continue_label = old_continue_label;
4418 break_label = old_break_label;
4420 if (get_cur_block() != NULL) {
4421 ir_node *body_jmp = new_Jmp();
4422 add_immBlock_pred(header_block, body_jmp);
4423 mature_immBlock(header_block);
4426 if (false_block == NULL) {
4427 false_block = new_immBlock();
4430 /* create the condition */
4431 set_cur_block(header_block);
4433 create_condition_evaluation(statement->condition, body_block, false_block);
4434 mature_immBlock(body_block);
4435 mature_immBlock(header_block);
4436 if (false_block != NULL) {
4437 mature_immBlock(false_block);
4440 set_cur_block(false_block);
4443 static void for_statement_to_firm(for_statement_t *statement)
4445 ir_node *jmp = NULL;
4447 /* create declarations */
4448 entity_t *entity = statement->scope.entities;
4449 for ( ; entity != NULL; entity = entity->base.next) {
4450 if (!is_declaration(entity))
4453 create_local_declaration(entity);
4456 if (get_cur_block() != NULL) {
4457 entity = statement->scope.entities;
4458 for ( ; entity != NULL; entity = entity->base.next) {
4459 if (!is_declaration(entity))
4462 initialize_local_declaration(entity);
4465 if (statement->initialisation != NULL) {
4466 expression_to_firm(statement->initialisation);
4473 /* create the step block */
4474 ir_node *const step_block = new_immBlock();
4475 if (statement->step != NULL) {
4476 expression_to_firm(statement->step);
4478 ir_node *const step_jmp = new_Jmp();
4480 /* create the header block */
4481 ir_node *const header_block = new_immBlock();
4483 add_immBlock_pred(header_block, jmp);
4485 add_immBlock_pred(header_block, step_jmp);
4487 /* the false block */
4488 ir_node *const false_block = new_immBlock();
4491 ir_node * body_block;
4492 if (statement->body != NULL) {
4493 ir_node *const old_continue_label = continue_label;
4494 ir_node *const old_break_label = break_label;
4495 continue_label = step_block;
4496 break_label = false_block;
4498 body_block = new_immBlock();
4499 statement_to_firm(statement->body);
4501 assert(continue_label == step_block);
4502 assert(break_label == false_block);
4503 continue_label = old_continue_label;
4504 break_label = old_break_label;
4506 if (get_cur_block() != NULL) {
4508 add_immBlock_pred(step_block, jmp);
4511 body_block = step_block;
4514 /* create the condition */
4515 set_cur_block(header_block);
4516 if (statement->condition != NULL) {
4517 create_condition_evaluation(statement->condition, body_block,
4520 keep_alive(header_block);
4521 keep_all_memory(header_block);
4523 add_immBlock_pred(body_block, jmp);
4526 mature_immBlock(body_block);
4527 mature_immBlock(false_block);
4528 mature_immBlock(step_block);
4529 mature_immBlock(header_block);
4530 mature_immBlock(false_block);
4532 set_cur_block(false_block);
4535 static void create_jump_statement(const statement_t *statement,
4536 ir_node *target_block)
4538 if (get_cur_block() == NULL)
4541 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4542 ir_node *jump = new_d_Jmp(dbgi);
4543 add_immBlock_pred(target_block, jump);
4545 set_cur_block(NULL);
4548 static ir_node *get_break_label(void)
4550 if (break_label == NULL) {
4551 ir_node *cur_block = get_cur_block();
4552 break_label = new_immBlock();
4553 set_cur_block(cur_block);
4558 static void switch_statement_to_firm(switch_statement_t *statement)
4560 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4562 ir_node *expression = expression_to_firm(statement->expression);
4563 ir_node *cond = new_d_Cond(dbgi, expression);
4565 set_cur_block(NULL);
4567 ir_node *const old_switch_cond = current_switch_cond;
4568 ir_node *const old_break_label = break_label;
4569 const bool old_saw_default_label = saw_default_label;
4570 saw_default_label = false;
4571 current_switch_cond = cond;
4573 switch_statement_t *const old_switch = current_switch;
4574 current_switch = statement;
4576 /* determine a free number for the default label */
4577 unsigned long num_cases = 0;
4579 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4580 if (l->expression == NULL) {
4584 if (l->last_case >= l->first_case)
4585 num_cases += l->last_case - l->first_case + 1;
4586 if (l->last_case > def_nr)
4587 def_nr = l->last_case;
4590 if (def_nr == INT_MAX) {
4591 /* Bad: an overflow will occurr, we cannot be sure that the
4592 * maximum + 1 is a free number. Scan the values a second
4593 * time to find a free number.
4595 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4597 memset(bits, 0, (num_cases + 7) >> 3);
4598 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4599 if (l->expression == NULL) {
4603 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4604 if (start < num_cases && l->last_case >= 0) {
4605 unsigned long end = (unsigned long)l->last_case < num_cases ?
4606 (unsigned long)l->last_case : num_cases - 1;
4607 for (unsigned long cns = start; cns <= end; ++cns) {
4608 bits[cns >> 3] |= (1 << (cns & 7));
4612 /* We look at the first num_cases constants:
4613 * Either they are densed, so we took the last (num_cases)
4614 * one, or they are non densed, so we will find one free
4618 for (i = 0; i < num_cases; ++i)
4619 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4627 statement->default_proj_nr = def_nr;
4629 if (statement->body != NULL) {
4630 statement_to_firm(statement->body);
4633 if (get_cur_block() != NULL) {
4634 ir_node *jmp = new_Jmp();
4635 add_immBlock_pred(get_break_label(), jmp);
4638 if (!saw_default_label) {
4639 set_cur_block(get_nodes_block(cond));
4640 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4641 statement->default_proj_nr);
4642 add_immBlock_pred(get_break_label(), proj);
4645 if (break_label != NULL) {
4646 mature_immBlock(break_label);
4648 set_cur_block(break_label);
4650 assert(current_switch_cond == cond);
4651 current_switch = old_switch;
4652 current_switch_cond = old_switch_cond;
4653 break_label = old_break_label;
4654 saw_default_label = old_saw_default_label;
4657 static void case_label_to_firm(const case_label_statement_t *statement)
4659 if (statement->is_empty_range)
4662 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4664 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4667 ir_node *old_block = get_nodes_block(current_switch_cond);
4668 ir_node *block = new_immBlock();
4670 set_cur_block(old_block);
4671 if (statement->expression != NULL) {
4672 long pn = statement->first_case;
4673 long end_pn = statement->last_case;
4674 assert(pn <= end_pn);
4675 /* create jumps for all cases in the given range */
4677 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4678 add_immBlock_pred(block, proj);
4679 } while(pn++ < end_pn);
4681 saw_default_label = true;
4682 proj = new_d_defaultProj(dbgi, current_switch_cond,
4683 current_switch->default_proj_nr);
4685 add_immBlock_pred(block, proj);
4688 if (fallthrough != NULL) {
4689 add_immBlock_pred(block, fallthrough);
4691 mature_immBlock(block);
4692 set_cur_block(block);
4694 if (statement->statement != NULL) {
4695 statement_to_firm(statement->statement);
4699 static void label_to_firm(const label_statement_t *statement)
4701 ir_node *block = get_label_block(statement->label);
4703 if (get_cur_block() != NULL) {
4704 ir_node *jmp = new_Jmp();
4705 add_immBlock_pred(block, jmp);
4708 set_cur_block(block);
4710 keep_all_memory(block);
4712 if (statement->statement != NULL) {
4713 statement_to_firm(statement->statement);
4717 static void goto_to_firm(const goto_statement_t *statement)
4719 if (get_cur_block() == NULL)
4722 if (statement->expression) {
4723 ir_node *irn = expression_to_firm(statement->expression);
4724 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4725 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4727 set_irn_link(ijmp, ijmp_list);
4730 ir_node *block = get_label_block(statement->label);
4731 ir_node *jmp = new_Jmp();
4732 add_immBlock_pred(block, jmp);
4734 set_cur_block(NULL);
4737 static void asm_statement_to_firm(const asm_statement_t *statement)
4739 bool needs_memory = false;
4741 if (statement->is_volatile) {
4742 needs_memory = true;
4745 size_t n_clobbers = 0;
4746 asm_clobber_t *clobber = statement->clobbers;
4747 for ( ; clobber != NULL; clobber = clobber->next) {
4748 const char *clobber_str = clobber->clobber.begin;
4750 if (!be_is_valid_clobber(clobber_str)) {
4751 errorf(&statement->base.source_position,
4752 "invalid clobber '%s' specified", clobber->clobber);
4756 if (strcmp(clobber_str, "memory") == 0) {
4757 needs_memory = true;
4761 ident *id = new_id_from_str(clobber_str);
4762 obstack_ptr_grow(&asm_obst, id);
4765 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4766 ident **clobbers = NULL;
4767 if (n_clobbers > 0) {
4768 clobbers = obstack_finish(&asm_obst);
4771 size_t n_inputs = 0;
4772 asm_argument_t *argument = statement->inputs;
4773 for ( ; argument != NULL; argument = argument->next)
4775 size_t n_outputs = 0;
4776 argument = statement->outputs;
4777 for ( ; argument != NULL; argument = argument->next)
4780 unsigned next_pos = 0;
4782 ir_node *ins[n_inputs + n_outputs + 1];
4785 ir_asm_constraint tmp_in_constraints[n_outputs];
4787 const expression_t *out_exprs[n_outputs];
4788 ir_node *out_addrs[n_outputs];
4789 size_t out_size = 0;
4791 argument = statement->outputs;
4792 for ( ; argument != NULL; argument = argument->next) {
4793 const char *constraints = argument->constraints.begin;
4794 asm_constraint_flags_t asm_flags
4795 = be_parse_asm_constraints(constraints);
4797 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4798 errorf(&statement->base.source_position,
4799 "some constraints in '%s' are not supported", constraints);
4802 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4803 errorf(&statement->base.source_position,
4804 "some constraints in '%s' are invalid", constraints);
4807 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4808 errorf(&statement->base.source_position,
4809 "no write flag specified for output constraints '%s'",
4814 unsigned pos = next_pos++;
4815 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4816 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4817 expression_t *expr = argument->expression;
4818 ir_node *addr = expression_to_addr(expr);
4819 /* in+output, construct an artifical same_as constraint on the
4821 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4823 ir_node *value = get_value_from_lvalue(expr, addr);
4825 snprintf(buf, sizeof(buf), "%u", pos);
4827 ir_asm_constraint constraint;
4828 constraint.pos = pos;
4829 constraint.constraint = new_id_from_str(buf);
4830 constraint.mode = get_ir_mode(expr->base.type);
4831 tmp_in_constraints[in_size] = constraint;
4832 ins[in_size] = value;
4837 out_exprs[out_size] = expr;
4838 out_addrs[out_size] = addr;
4840 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4841 /* pure memory ops need no input (but we have to make sure we
4842 * attach to the memory) */
4843 assert(! (asm_flags &
4844 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4845 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4846 needs_memory = true;
4848 /* we need to attach the address to the inputs */
4849 expression_t *expr = argument->expression;
4851 ir_asm_constraint constraint;
4852 constraint.pos = pos;
4853 constraint.constraint = new_id_from_str(constraints);
4854 constraint.mode = NULL;
4855 tmp_in_constraints[in_size] = constraint;
4857 ins[in_size] = expression_to_addr(expr);
4861 errorf(&statement->base.source_position,
4862 "only modifiers but no place set in constraints '%s'",
4867 ir_asm_constraint constraint;
4868 constraint.pos = pos;
4869 constraint.constraint = new_id_from_str(constraints);
4870 constraint.mode = get_ir_mode(argument->expression->base.type);
4872 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4874 assert(obstack_object_size(&asm_obst)
4875 == out_size * sizeof(ir_asm_constraint));
4876 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4879 obstack_grow(&asm_obst, tmp_in_constraints,
4880 in_size * sizeof(tmp_in_constraints[0]));
4881 /* find and count input and output arguments */
4882 argument = statement->inputs;
4883 for ( ; argument != NULL; argument = argument->next) {
4884 const char *constraints = argument->constraints.begin;
4885 asm_constraint_flags_t asm_flags
4886 = be_parse_asm_constraints(constraints);
4888 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4889 errorf(&statement->base.source_position,
4890 "some constraints in '%s' are not supported", constraints);
4893 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4894 errorf(&statement->base.source_position,
4895 "some constraints in '%s' are invalid", constraints);
4898 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4899 errorf(&statement->base.source_position,
4900 "write flag specified for input constraints '%s'",
4906 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4907 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4908 /* we can treat this as "normal" input */
4909 input = expression_to_firm(argument->expression);
4910 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4911 /* pure memory ops need no input (but we have to make sure we
4912 * attach to the memory) */
4913 assert(! (asm_flags &
4914 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4915 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4916 needs_memory = true;
4917 input = expression_to_addr(argument->expression);
4919 errorf(&statement->base.source_position,
4920 "only modifiers but no place set in constraints '%s'",
4925 ir_asm_constraint constraint;
4926 constraint.pos = next_pos++;
4927 constraint.constraint = new_id_from_str(constraints);
4928 constraint.mode = get_irn_mode(input);
4930 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4931 ins[in_size++] = input;
4935 ir_asm_constraint constraint;
4936 constraint.pos = next_pos++;
4937 constraint.constraint = new_id_from_str("");
4938 constraint.mode = mode_M;
4940 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4941 ins[in_size++] = get_store();
4944 assert(obstack_object_size(&asm_obst)
4945 == in_size * sizeof(ir_asm_constraint));
4946 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4948 /* create asm node */
4949 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4951 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4953 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4954 out_size, output_constraints,
4955 n_clobbers, clobbers, asm_text);
4957 if (statement->is_volatile) {
4958 set_irn_pinned(node, op_pin_state_pinned);
4960 set_irn_pinned(node, op_pin_state_floats);
4963 /* create output projs & connect them */
4965 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4970 for (i = 0; i < out_size; ++i) {
4971 const expression_t *out_expr = out_exprs[i];
4973 ir_mode *mode = get_ir_mode(out_expr->base.type);
4974 ir_node *proj = new_Proj(node, mode, pn);
4975 ir_node *addr = out_addrs[i];
4977 set_value_for_expression_addr(out_expr, proj, addr);
4981 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4982 statement_to_firm(statement->try_statement);
4983 warningf(&statement->base.source_position, "structured exception handling ignored");
4986 static void leave_statement_to_firm(leave_statement_t *statement) {
4987 errorf(&statement->base.source_position, "__leave not supported yet");
4991 * Transform a statement.
4993 static void statement_to_firm(statement_t *statement)
4996 assert(!statement->base.transformed);
4997 statement->base.transformed = true;
5000 switch (statement->kind) {
5001 case STATEMENT_INVALID:
5002 panic("invalid statement found");
5004 case STATEMENT_EMPTY:
5007 case STATEMENT_COMPOUND:
5008 compound_statement_to_firm(&statement->compound);
5010 case STATEMENT_RETURN:
5011 return_statement_to_firm(&statement->returns);
5013 case STATEMENT_EXPRESSION:
5014 expression_statement_to_firm(&statement->expression);
5017 if_statement_to_firm(&statement->ifs);
5019 case STATEMENT_WHILE:
5020 while_statement_to_firm(&statement->whiles);
5022 case STATEMENT_DO_WHILE:
5023 do_while_statement_to_firm(&statement->do_while);
5025 case STATEMENT_DECLARATION:
5026 declaration_statement_to_firm(&statement->declaration);
5028 case STATEMENT_BREAK:
5029 create_jump_statement(statement, get_break_label());
5031 case STATEMENT_CONTINUE:
5032 create_jump_statement(statement, continue_label);
5034 case STATEMENT_SWITCH:
5035 switch_statement_to_firm(&statement->switchs);
5037 case STATEMENT_CASE_LABEL:
5038 case_label_to_firm(&statement->case_label);
5041 for_statement_to_firm(&statement->fors);
5043 case STATEMENT_LABEL:
5044 label_to_firm(&statement->label);
5046 case STATEMENT_LOCAL_LABEL:
5047 /* local labels transform the semantics of labels while parsing
5048 * they don't need any special treatment here */
5050 case STATEMENT_GOTO:
5051 goto_to_firm(&statement->gotos);
5054 asm_statement_to_firm(&statement->asms);
5056 case STATEMENT_MS_TRY:
5057 ms_try_statement_to_firm(&statement->ms_try);
5059 case STATEMENT_LEAVE:
5060 leave_statement_to_firm(&statement->leave);
5063 panic("Statement not implemented\n");
5066 static int count_local_variables(const entity_t *entity,
5067 const entity_t *const end)
5070 for (; entity != end; entity = entity->base.next) {
5071 if (entity->kind != ENTITY_VARIABLE)
5073 type_t *type = skip_typeref(entity->declaration.type);
5075 if (!entity->variable.address_taken && is_type_scalar(type))
5081 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5083 int *const count = env;
5085 switch (stmt->kind) {
5086 case STATEMENT_DECLARATION: {
5087 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5088 *count += count_local_variables(decl_stmt->declarations_begin,
5089 decl_stmt->declarations_end->base.next);
5094 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5102 static int get_function_n_local_vars(entity_t *entity)
5106 /* count parameters */
5107 count += count_local_variables(entity->function.parameters.entities, NULL);
5109 /* count local variables declared in body */
5110 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5115 static void initialize_function_parameters(entity_t *entity)
5117 assert(entity->kind == ENTITY_FUNCTION);
5118 ir_graph *irg = current_ir_graph;
5119 ir_node *args = get_irg_args(irg);
5120 ir_node *start_block = get_irg_start_block(irg);
5121 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5124 entity_t *parameter = entity->function.parameters.entities;
5125 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5126 assert(parameter->kind == ENTITY_VARIABLE);
5127 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5128 type_t *type = skip_typeref(parameter->declaration.type);
5130 bool needs_entity = parameter->variable.address_taken;
5131 assert(!is_type_array(type));
5132 if (is_type_compound(type)) {
5133 needs_entity = true;
5137 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5138 ident *id = new_id_from_str(parameter->base.symbol->string);
5139 set_entity_ident(entity, id);
5141 parameter->declaration.kind
5142 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5143 parameter->variable.v.entity = entity;
5147 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5148 ir_mode *param_mode = get_type_mode(param_irtype);
5151 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5153 ir_mode *mode = get_ir_mode(type);
5154 value = create_conv(NULL, value, mode);
5155 value = do_strict_conv(NULL, value);
5157 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5158 parameter->variable.v.value_number = next_value_number_function;
5159 set_irg_loc_description(current_ir_graph, next_value_number_function,
5160 (variable_t*) ¶meter->variable);
5161 ++next_value_number_function;
5163 set_value(parameter->variable.v.value_number, value);
5168 * Handle additional decl modifiers for IR-graphs
5170 * @param irg the IR-graph
5171 * @param dec_modifiers additional modifiers
5173 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5175 if (decl_modifiers & DM_NORETURN) {
5176 /* TRUE if the declaration includes the Microsoft
5177 __declspec(noreturn) specifier. */
5178 set_irg_additional_property(irg, mtp_property_noreturn);
5180 if (decl_modifiers & DM_NOTHROW) {
5181 /* TRUE if the declaration includes the Microsoft
5182 __declspec(nothrow) specifier. */
5183 set_irg_additional_property(irg, mtp_property_nothrow);
5185 if (decl_modifiers & DM_NAKED) {
5186 /* TRUE if the declaration includes the Microsoft
5187 __declspec(naked) specifier. */
5188 set_irg_additional_property(irg, mtp_property_naked);
5190 if (decl_modifiers & DM_FORCEINLINE) {
5191 /* TRUE if the declaration includes the
5192 Microsoft __forceinline specifier. */
5193 set_irg_inline_property(irg, irg_inline_forced);
5195 if (decl_modifiers & DM_NOINLINE) {
5196 /* TRUE if the declaration includes the Microsoft
5197 __declspec(noinline) specifier. */
5198 set_irg_inline_property(irg, irg_inline_forbidden);
5202 static void add_function_pointer(ir_type *segment, ir_entity *method,
5203 const char *unique_template)
5205 ir_type *method_type = get_entity_type(method);
5206 ident *id = id_unique(unique_template);
5207 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5209 ident *ide = id_unique(unique_template);
5210 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5211 ir_graph *irg = get_const_code_irg();
5212 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5215 set_entity_compiler_generated(ptr, 1);
5216 set_entity_variability(ptr, variability_constant);
5217 set_atomic_ent_value(ptr, val);
5221 * Generate possible IJmp branches to a given label block.
5223 static void gen_ijmp_branches(ir_node *block) {
5225 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5226 add_immBlock_pred(block, ijmp);
5231 * Create code for a function.
5233 static void create_function(entity_t *entity)
5235 assert(entity->kind == ENTITY_FUNCTION);
5236 ir_entity *function_entity = get_function_entity(entity);
5238 if (entity->function.statement == NULL)
5241 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5242 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5243 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5245 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5246 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5247 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5250 current_function_entity = entity;
5251 current_function_name = NULL;
5252 current_funcsig = NULL;
5254 assert(all_labels == NULL);
5255 all_labels = NEW_ARR_F(label_t *, 0);
5258 int n_local_vars = get_function_n_local_vars(entity);
5259 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5261 ir_graph *old_current_function = current_function;
5262 current_function = irg;
5264 set_irg_fp_model(irg, firm_opt.fp_model);
5265 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5266 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5268 ir_node *first_block = get_cur_block();
5270 /* set inline flags */
5271 if (entity->function.is_inline)
5272 set_irg_inline_property(irg, irg_inline_recomended);
5273 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5275 next_value_number_function = 0;
5276 initialize_function_parameters(entity);
5278 statement_to_firm(entity->function.statement);
5280 ir_node *end_block = get_irg_end_block(irg);
5282 /* do we have a return statement yet? */
5283 if (get_cur_block() != NULL) {
5284 type_t *type = skip_typeref(entity->declaration.type);
5285 assert(is_type_function(type));
5286 const function_type_t *func_type = &type->function;
5287 const type_t *return_type
5288 = skip_typeref(func_type->return_type);
5291 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5292 ret = new_Return(get_store(), 0, NULL);
5295 if (is_type_scalar(return_type)) {
5296 mode = get_ir_mode(func_type->return_type);
5302 /* ยง5.1.2.2.3 main implicitly returns 0 */
5303 if (strcmp(entity->base.symbol->string, "main") == 0) {
5304 in[0] = new_Const(mode, get_mode_null(mode));
5306 in[0] = new_Unknown(mode);
5308 ret = new_Return(get_store(), 1, in);
5310 add_immBlock_pred(end_block, ret);
5313 bool has_computed_gotos = false;
5314 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5315 label_t *label = all_labels[i];
5316 if (label->address_taken) {
5317 gen_ijmp_branches(label->block);
5318 has_computed_gotos = true;
5320 mature_immBlock(label->block);
5322 if (has_computed_gotos) {
5323 /* if we have computed goto's in the function, we cannot inline it */
5324 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5325 warningf(&entity->base.source_position,
5326 "function '%Y' can never be inlined because it contains a computed goto",
5327 entity->base.symbol);
5329 set_irg_inline_property(irg, irg_inline_forbidden);
5332 DEL_ARR_F(all_labels);
5335 mature_immBlock(first_block);
5336 mature_immBlock(end_block);
5338 irg_finalize_cons(irg);
5340 /* finalize the frame type */
5341 ir_type *frame_type = get_irg_frame_type(irg);
5342 int n = get_compound_n_members(frame_type);
5345 for (int i = 0; i < n; ++i) {
5346 ir_entity *entity = get_compound_member(frame_type, i);
5347 ir_type *entity_type = get_entity_type(entity);
5349 int align = get_type_alignment_bytes(entity_type);
5350 if (align > align_all)
5354 misalign = offset % align;
5356 offset += align - misalign;
5360 set_entity_offset(entity, offset);
5361 offset += get_type_size_bytes(entity_type);
5363 set_type_size_bytes(frame_type, offset);
5364 set_type_alignment_bytes(frame_type, align_all);
5367 current_function = old_current_function;
5369 /* create inner functions */
5371 for (inner = next_inner_function(); inner != NULL;
5372 inner = next_inner_function()) {
5373 create_function(inner);
5377 static void scope_to_firm(scope_t *scope)
5379 /* first pass: create declarations */
5380 entity_t *entity = scope->entities;
5381 for ( ; entity != NULL; entity = entity->base.next) {
5382 if (entity->base.symbol == NULL)
5385 if (entity->kind == ENTITY_FUNCTION) {
5386 get_function_entity(entity);
5387 } else if (entity->kind == ENTITY_VARIABLE) {
5388 create_global_variable(entity);
5392 /* second pass: create code/initializers */
5393 entity = scope->entities;
5394 for ( ; entity != NULL; entity = entity->base.next) {
5395 if (entity->base.symbol == NULL)
5398 if (entity->kind == ENTITY_FUNCTION) {
5399 create_function(entity);
5400 } else if (entity->kind == ENTITY_VARIABLE) {
5401 assert(entity->declaration.kind
5402 == DECLARATION_KIND_GLOBAL_VARIABLE);
5403 current_ir_graph = get_const_code_irg();
5404 create_variable_initializer(entity);
5409 static void set_be_option(const char *option)
5411 int res = firm_be_option(option);
5415 void init_ast2firm(void)
5417 obstack_init(&asm_obst);
5418 init_atomic_modes();
5420 id_underscore = new_id_from_chars("_", 1);
5421 id_imp = new_id_from_chars("__imp_", 6);
5423 /* OS option must be set to the backend */
5424 switch (firm_opt.os_support) {
5425 case OS_SUPPORT_MINGW:
5426 create_ld_ident = create_ld_ident_win32;
5427 set_be_option("ia32-gasmode=mingw");
5429 case OS_SUPPORT_LINUX:
5430 create_ld_ident = create_ld_ident_linux_elf;
5431 set_be_option("ia32-gasmode=elf");
5433 case OS_SUPPORT_MACHO:
5434 create_ld_ident = create_ld_ident_macho;
5435 set_be_option("ia32-gasmode=macho");
5436 set_be_option("ia32-stackalign=4");
5437 set_be_option("pic");
5441 /* create idents for all known runtime functions */
5442 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5443 rts_idents[i] = new_id_from_str(rts_data[i].name);
5446 entitymap_init(&entitymap);
5449 static void init_ir_types(void)
5451 static int ir_types_initialized = 0;
5452 if (ir_types_initialized)
5454 ir_types_initialized = 1;
5456 ir_type_int = get_ir_type(type_int);
5457 ir_type_const_char = get_ir_type(type_const_char);
5458 ir_type_wchar_t = get_ir_type(type_wchar_t);
5459 ir_type_void = get_ir_type(type_void);
5462 void exit_ast2firm(void)
5464 entitymap_destroy(&entitymap);
5465 obstack_free(&asm_obst, NULL);
5468 static void global_asm_to_firm(statement_t *s)
5470 for (; s != NULL; s = s->base.next) {
5471 assert(s->kind == STATEMENT_ASM);
5473 char const *const text = s->asms.asm_text.begin;
5474 size_t size = s->asms.asm_text.size;
5476 /* skip the last \0 */
5477 if (text[size - 1] == '\0')
5480 ident *const id = new_id_from_chars(text, size);
5485 void translation_unit_to_firm(translation_unit_t *unit)
5487 /* just to be sure */
5488 continue_label = NULL;
5490 current_switch_cond = NULL;
5493 inner_functions = NEW_ARR_F(entity_t *, 0);
5495 scope_to_firm(&unit->scope);
5496 global_asm_to_firm(unit->global_asm);
5498 DEL_ARR_F(inner_functions);
5499 inner_functions = NULL;
5501 current_ir_graph = NULL;