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"
40 #include "diagnostic.h"
41 #include "lang_features.h"
43 #include "walk_statements.h"
45 #include "entitymap_t.h"
46 #include "driver/firm_opt.h"
47 #include "driver/firm_cmdline.h"
49 /* some idents needed for name mangling */
50 static ident *id_underscore;
53 static ir_type *ir_type_const_char;
54 static ir_type *ir_type_wchar_t;
55 static ir_type *ir_type_void;
56 static ir_type *ir_type_int;
58 static int next_value_number_function;
59 static ir_node *continue_label;
60 static ir_node *break_label;
61 static ir_node *current_switch_cond;
62 static bool saw_default_label;
63 static declaration_t **all_labels;
64 static declaration_t **inner_functions;
65 static int inner_function_idx;
66 static ir_node *ijmp_list;
67 static bool constant_folding;
69 extern bool have_const_functions;
71 static const declaration_t *current_function_decl;
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_FUNCTION,
84 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
85 DECLARATION_KIND_GLOBAL_VARIABLE,
86 DECLARATION_KIND_LOCAL_VARIABLE,
87 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
88 DECLARATION_KIND_COMPOUND_MEMBER,
89 DECLARATION_KIND_LABEL_BLOCK,
90 DECLARATION_KIND_ENUM_ENTRY,
91 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
92 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
93 DECLARATION_KIND_TYPE,
94 DECLARATION_KIND_INNER_FUNCTION
97 static ir_type *get_ir_type(type_t *type);
98 static ir_type *get_ir_type_incomplete(type_t *type);
100 static void enqueue_inner_function(declaration_t *declaration) {
101 if (inner_functions == NULL) {
102 inner_functions = NEW_ARR_F(declaration_t *, 16);
103 inner_functions[0] = declaration;
104 inner_function_idx = 1;
106 int size = ARR_LEN(inner_functions);
107 if (inner_function_idx >= size) {
108 ARR_RESIZE(declaration_t *, inner_functions, size + 16);
110 inner_functions[inner_function_idx++] = declaration;
114 static declaration_t *next_inner_function(void) {
115 if (inner_function_idx == 0)
117 return inner_functions[--inner_function_idx];
120 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
122 const declaration_t *declaration = get_irg_loc_description(irg, pos);
124 if (declaration != NULL) {
125 warningf(&declaration->source_position,
126 "variable '%#T' might be used uninitialized",
127 declaration->type, declaration->symbol);
129 return new_r_Unknown(irg, mode);
132 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
134 const source_position_t *pos = (const source_position_t*) dbg;
137 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
141 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
143 const source_position_t *pos = (const source_position_t*) dbg;
148 return pos->input_name;
151 static dbg_info *get_dbg_info(const source_position_t *pos)
153 return (dbg_info*) pos;
156 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
158 static ir_mode *mode_int, *mode_uint;
160 static ir_node *_expression_to_firm(const expression_t *expression);
161 static ir_node *expression_to_firm(const expression_t *expression);
162 static inline ir_mode *get_ir_mode(type_t *type);
163 static void create_local_declaration(declaration_t *declaration);
165 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
167 unsigned flags = get_atomic_type_flags(kind);
168 unsigned size = get_atomic_type_size(kind);
169 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
170 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
173 unsigned bit_size = size * 8;
174 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
175 ir_mode_arithmetic arithmetic;
176 unsigned modulo_shift;
178 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
179 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
180 snprintf(name, sizeof(name), "i%s%u", is_signed ? "" : "u", bit_size);
181 sort = irms_int_number;
182 arithmetic = irma_twos_complement;
183 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
185 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
186 snprintf(name, sizeof(name), "f%u", bit_size);
187 sort = irms_float_number;
188 arithmetic = irma_ieee754;
191 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
199 * Initialises the atomic modes depending on the machine size.
201 static void init_atomic_modes(void)
203 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
204 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
206 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
207 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
209 /* there's no real void type in firm */
210 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
212 /* initialize pointer modes */
214 ir_mode_sort sort = irms_reference;
215 unsigned bit_size = machine_size;
217 ir_mode_arithmetic arithmetic = irma_twos_complement;
218 unsigned modulo_shift
219 = bit_size < machine_size ? machine_size : bit_size;
221 snprintf(name, sizeof(name), "p%u", machine_size);
222 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
225 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
226 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
228 /* Hmm, pointers should be machine size */
229 set_modeP_data(ptr_mode);
230 set_modeP_code(ptr_mode);
233 static unsigned get_compound_type_size(compound_type_t *type)
235 ir_type *irtype = get_ir_type((type_t*) type);
236 return get_type_size_bytes(irtype);
239 static unsigned get_array_type_size(array_type_t *type)
241 assert(!type->is_vla);
242 ir_type *irtype = get_ir_type((type_t*) type);
243 return get_type_size_bytes(irtype);
247 static unsigned get_type_size_const(type_t *type)
251 panic("error type occurred");
253 return get_atomic_type_size(type->atomic.akind);
255 return 2 * get_atomic_type_size(type->complex.akind);
257 return get_atomic_type_size(type->imaginary.akind);
259 return get_mode_size_bytes(mode_int);
260 case TYPE_COMPOUND_UNION:
261 case TYPE_COMPOUND_STRUCT:
262 return get_compound_type_size(&type->compound);
264 /* just a pointer to the function */
265 return get_mode_size_bytes(mode_P_code);
267 return get_mode_size_bytes(mode_P_data);
269 return get_array_type_size(&type->array);
271 return get_type_size_const(type->builtin.real_type);
273 panic("type size of bitfield request");
279 panic("Trying to determine size of invalid type");
282 static ir_node *get_type_size(type_t *type)
284 type = skip_typeref(type);
286 if (is_type_array(type) && type->array.is_vla) {
287 ir_node *size_node = type->array.size_node;
288 if (size_node == NULL) {
289 size_node = expression_to_firm(type->array.size_expression);
290 assert(!is_Const(size_node));
291 type->array.size_node = size_node;
294 ir_node *elem_size = get_type_size(type->array.element_type);
295 ir_mode *mode = get_irn_mode(size_node);
296 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
300 ir_mode *mode = get_ir_mode(type_size_t);
302 sym.type_p = get_ir_type(type);
303 return new_SymConst(mode, sym, symconst_type_size);
306 static unsigned count_parameters(const function_type_t *function_type)
310 function_parameter_t *parameter = function_type->parameters;
311 for ( ; parameter != NULL; parameter = parameter->next) {
319 * Creates a Firm type for an atomic type
321 static ir_type *create_atomic_type(const atomic_type_t *type)
323 atomic_type_kind_t kind = type->akind;
324 ir_mode *mode = _atomic_modes[kind];
325 ident *id = get_mode_ident(mode);
326 ir_type *irtype = new_type_primitive(id, mode);
328 set_type_alignment_bytes(irtype, type->base.alignment);
334 * Creates a Firm type for a complex type
336 static ir_type *create_complex_type(const complex_type_t *type)
338 atomic_type_kind_t kind = type->akind;
339 ir_mode *mode = _atomic_modes[kind];
340 ident *id = get_mode_ident(mode);
344 /* FIXME: finish the array */
349 * Creates a Firm type for an imaginary type
351 static ir_type *create_imaginary_type(const imaginary_type_t *type)
353 atomic_type_kind_t kind = type->akind;
354 ir_mode *mode = _atomic_modes[kind];
355 ident *id = get_mode_ident(mode);
356 ir_type *irtype = new_type_primitive(id, mode);
358 set_type_alignment_bytes(irtype, type->base.alignment);
364 * return type of a parameter (and take transparent union gnu extension into
367 static type_t *get_parameter_type(type_t *type)
369 type = skip_typeref(type);
370 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
371 declaration_t *decl = type->compound.declaration;
372 type = decl->scope.declarations->type;
378 static ir_type *create_method_type(const function_type_t *function_type)
380 type_t *return_type = function_type->return_type;
382 ident *id = id_unique("functiontype.%u");
383 int n_parameters = count_parameters(function_type);
384 int n_results = return_type == type_void ? 0 : 1;
385 ir_type *irtype = new_type_method(id, n_parameters, n_results);
387 if (return_type != type_void) {
388 ir_type *restype = get_ir_type(return_type);
389 set_method_res_type(irtype, 0, restype);
392 function_parameter_t *parameter = function_type->parameters;
394 for ( ; parameter != NULL; parameter = parameter->next) {
395 type_t *type = get_parameter_type(parameter->type);
396 ir_type *p_irtype = get_ir_type(type);
397 set_method_param_type(irtype, n, p_irtype);
401 if (function_type->variadic || function_type->unspecified_parameters) {
402 set_method_variadicity(irtype, variadicity_variadic);
405 unsigned cc = get_method_calling_convention(irtype);
406 switch (function_type->calling_convention) {
407 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
410 set_method_calling_convention(irtype, SET_CDECL(cc));
414 if (function_type->variadic || function_type->unspecified_parameters)
417 /* only non-variadic function can use stdcall, else use cdecl */
418 set_method_calling_convention(irtype, SET_STDCALL(cc));
422 if (function_type->variadic || function_type->unspecified_parameters)
424 /* only non-variadic function can use fastcall, else use cdecl */
425 set_method_calling_convention(irtype, SET_FASTCALL(cc));
429 /* Hmm, leave default, not accepted by the parser yet. */
435 static ir_type *create_pointer_type(pointer_type_t *type)
437 type_t *points_to = type->points_to;
438 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
439 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
440 ir_points_to, mode_P_data);
445 static ir_type *create_array_type(array_type_t *type)
447 type_t *element_type = type->element_type;
448 ir_type *ir_element_type = get_ir_type(element_type);
450 ident *id = id_unique("array.%u");
451 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
453 const int align = get_type_alignment_bytes(ir_element_type);
454 set_type_alignment_bytes(ir_type, align);
456 if (type->size_constant) {
457 int n_elements = type->size;
459 set_array_bounds_int(ir_type, 0, 0, n_elements);
461 size_t elemsize = get_type_size_bytes(ir_element_type);
462 if (elemsize % align > 0) {
463 elemsize += align - (elemsize % align);
465 set_type_size_bytes(ir_type, n_elements * elemsize);
467 set_array_lower_bound_int(ir_type, 0, 0);
469 set_type_state(ir_type, layout_fixed);
475 * Return the signed integer type of size bits.
477 * @param size the size
479 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
482 static ir_mode *s_modes[64 + 1] = {NULL, };
486 if (size <= 0 || size > 64)
489 mode = s_modes[size];
493 snprintf(name, sizeof(name), "bf_I%u", size);
494 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
495 size <= 32 ? 32 : size );
496 s_modes[size] = mode;
500 snprintf(name, sizeof(name), "I%u", size);
501 ident *id = new_id_from_str(name);
502 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
503 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
504 set_primitive_base_type(res, base_tp);
510 * Return the unsigned integer type of size bits.
512 * @param size the size
514 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
517 static ir_mode *u_modes[64 + 1] = {NULL, };
521 if (size <= 0 || size > 64)
524 mode = u_modes[size];
528 snprintf(name, sizeof(name), "bf_U%u", size);
529 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
530 size <= 32 ? 32 : size );
531 u_modes[size] = mode;
536 snprintf(name, sizeof(name), "U%u", size);
537 ident *id = new_id_from_str(name);
538 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
539 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
540 set_primitive_base_type(res, base_tp);
545 static ir_type *create_bitfield_type(bitfield_type_t *const type)
547 type_t *base = skip_typeref(type->base_type);
548 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
549 ir_type *irbase = get_ir_type(base);
551 unsigned size = type->bit_size;
553 assert(!is_type_float(base));
554 if (is_type_signed(base)) {
555 return get_signed_int_type_for_bit_size(irbase, size);
557 return get_unsigned_int_type_for_bit_size(irbase, size);
561 #define INVALID_TYPE ((ir_type_ptr)-1)
564 COMPOUND_IS_STRUCT = false,
565 COMPOUND_IS_UNION = true
569 * Construct firm type from ast struct type.
571 * As anonymous inner structs get flattened to a single firm type, we might get
572 * irtype, outer_offset and out_align passed (they represent the position of
573 * the anonymous inner struct inside the resulting firm struct)
575 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
576 size_t *outer_offset, size_t *outer_align,
577 bool incomplete, bool is_union)
579 declaration_t *declaration = type->declaration;
580 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
582 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
583 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
585 return declaration->v.irtype;
587 size_t align_all = 1;
589 size_t bit_offset = 0;
592 if (irtype == NULL) {
593 symbol_t *symbol = declaration->symbol;
595 if (symbol != NULL) {
596 id = new_id_from_str(symbol->string);
599 id = id_unique("__anonymous_union.%u");
601 id = id_unique("__anonymous_struct.%u");
604 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
607 irtype = new_d_type_union(id, dbgi);
609 irtype = new_d_type_struct(id, dbgi);
612 declaration->declaration_kind
613 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
614 declaration->v.irtype = irtype;
615 //type->base.firm_type = irtype;
617 offset = *outer_offset;
618 align_all = *outer_align;
624 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
626 declaration_t *entry = declaration->scope.declarations;
627 for( ; entry != NULL; entry = entry->next) {
628 if (entry->namespc != NAMESPACE_NORMAL)
631 size_t prev_offset = offset;
633 symbol_t *symbol = entry->symbol;
634 type_t *entry_type = skip_typeref(entry->type);
635 dbg_info *dbgi = get_dbg_info(&entry->source_position);
638 if (symbol != NULL) {
639 ident = new_id_from_str(symbol->string);
641 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
642 create_compound_type(&entry_type->compound, irtype, &offset,
643 &align_all, false, COMPOUND_IS_STRUCT);
644 goto finished_member;
645 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
646 create_compound_type(&entry_type->compound, irtype, &offset,
647 &align_all, false, COMPOUND_IS_UNION);
648 goto finished_member;
650 assert(entry_type->kind == TYPE_BITFIELD);
652 ident = id_unique("anon.%u");
655 ir_type *base_irtype;
656 if (entry_type->kind == TYPE_BITFIELD) {
657 base_irtype = get_ir_type(entry_type->bitfield.base_type);
659 base_irtype = get_ir_type(entry_type);
662 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
663 size_t misalign = offset % entry_alignment;
665 ir_type *entry_irtype = get_ir_type(entry_type);
666 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
669 size_t bits_remainder;
670 if (entry_type->kind == TYPE_BITFIELD) {
671 size_t size_bits = entry_type->bitfield.bit_size;
672 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
674 if (size_bits > rest_size_bits) {
675 /* start a new bucket */
676 offset += entry_alignment - misalign;
682 /* put into current bucket */
683 base = offset - misalign;
684 bits_remainder = misalign * 8 + bit_offset;
687 offset += size_bits / 8;
688 bit_offset = bit_offset + (size_bits % 8);
690 size_t entry_size = get_type_size_bytes(base_irtype);
691 if (misalign > 0 || bit_offset > 0)
692 offset += entry_alignment - misalign;
696 offset += entry_size;
700 if (entry_alignment > align_all) {
701 if (entry_alignment % align_all != 0) {
702 panic("uneven alignments not supported yet");
704 align_all = entry_alignment;
707 set_entity_offset(entity, base);
708 set_entity_offset_bits_remainder(entity,
709 (unsigned char) bits_remainder);
710 //add_struct_member(irtype, entity);
711 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
712 assert(entry->v.entity == NULL);
713 entry->v.entity = entity;
717 size_t entry_size = offset - prev_offset;
718 if (entry_size > size) {
730 size_t misalign = offset % align_all;
731 if (misalign > 0 || bit_offset > 0) {
732 size += align_all - misalign;
735 if (outer_offset != NULL) {
737 *outer_offset = offset;
739 *outer_offset += size;
742 if (align_all > *outer_align) {
743 if (align_all % *outer_align != 0) {
744 panic("uneven alignments not supported yet");
746 *outer_align = align_all;
749 set_type_alignment_bytes(irtype, align_all);
750 set_type_size_bytes(irtype, size);
751 set_type_state(irtype, layout_fixed);
757 static ir_type *create_enum_type(enum_type_t *const type)
759 type->base.firm_type = ir_type_int;
761 ir_mode *const mode = mode_int;
762 tarval *const one = get_mode_one(mode);
763 tarval * tv_next = get_tarval_null(mode);
765 bool constant_folding_old = constant_folding;
766 constant_folding = true;
768 declaration_t *declaration = type->declaration->next;
769 for (; declaration != NULL; declaration = declaration->next) {
770 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
773 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
775 expression_t *const init = declaration->init.enum_value;
777 ir_node *const cnst = expression_to_firm(init);
778 if (!is_Const(cnst)) {
779 panic("couldn't fold constant");
781 tv_next = get_Const_tarval(cnst);
783 declaration->v.enum_val = tv_next;
784 tv_next = tarval_add(tv_next, one);
787 constant_folding = constant_folding_old;
792 static ir_type *get_ir_type_incomplete(type_t *type)
794 assert(type != NULL);
795 type = skip_typeref(type);
797 if (type->base.firm_type != NULL) {
798 assert(type->base.firm_type != INVALID_TYPE);
799 return type->base.firm_type;
802 switch (type->kind) {
803 case TYPE_COMPOUND_STRUCT:
804 return create_compound_type(&type->compound, NULL, NULL, NULL,
805 true, COMPOUND_IS_STRUCT);
806 case TYPE_COMPOUND_UNION:
807 return create_compound_type(&type->compound, NULL, NULL, NULL,
808 true, COMPOUND_IS_UNION);
810 return get_ir_type(type);
814 static ir_type *get_ir_type(type_t *type)
816 assert(type != NULL);
818 type = skip_typeref(type);
820 if (type->base.firm_type != NULL) {
821 assert(type->base.firm_type != INVALID_TYPE);
822 return type->base.firm_type;
825 ir_type *firm_type = NULL;
826 switch (type->kind) {
828 /* Happens while constant folding, when there was an error */
829 return create_atomic_type(&type_void->atomic);
832 firm_type = create_atomic_type(&type->atomic);
835 firm_type = create_complex_type(&type->complex);
838 firm_type = create_imaginary_type(&type->imaginary);
841 firm_type = create_method_type(&type->function);
844 firm_type = create_pointer_type(&type->pointer);
847 firm_type = create_array_type(&type->array);
849 case TYPE_COMPOUND_STRUCT:
850 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
851 false, COMPOUND_IS_STRUCT);
853 case TYPE_COMPOUND_UNION:
854 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
855 false, COMPOUND_IS_UNION);
858 firm_type = create_enum_type(&type->enumt);
861 firm_type = get_ir_type(type->builtin.real_type);
864 firm_type = create_bitfield_type(&type->bitfield);
872 if (firm_type == NULL)
873 panic("unknown type found");
875 type->base.firm_type = firm_type;
879 static inline ir_mode *get_ir_mode(type_t *type)
881 ir_type *irtype = get_ir_type(type);
883 /* firm doesn't report a mode for arrays somehow... */
884 if (is_Array_type(irtype)) {
888 ir_mode *mode = get_type_mode(irtype);
889 assert(mode != NULL);
893 /** Names of the runtime functions. */
894 static const struct {
895 int id; /**< the rts id */
896 int n_res; /**< number of return values */
897 const char *name; /**< the name of the rts function */
898 int n_params; /**< number of parameters */
899 unsigned flags; /**< language flags */
901 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
902 { rts_abort, 0, "abort", 0, _C89 },
903 { rts_alloca, 1, "alloca", 1, _ALL },
904 { rts_abs, 1, "abs", 1, _C89 },
905 { rts_labs, 1, "labs", 1, _C89 },
906 { rts_llabs, 1, "llabs", 1, _C99 },
907 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
909 { rts_fabs, 1, "fabs", 1, _C89 },
910 { rts_sqrt, 1, "sqrt", 1, _C89 },
911 { rts_cbrt, 1, "cbrt", 1, _C99 },
912 { rts_exp, 1, "exp", 1, _C89 },
913 { rts_exp2, 1, "exp2", 1, _C89 },
914 { rts_exp10, 1, "exp10", 1, _GNUC },
915 { rts_log, 1, "log", 1, _C89 },
916 { rts_log2, 1, "log2", 1, _C89 },
917 { rts_log10, 1, "log10", 1, _C89 },
918 { rts_pow, 1, "pow", 2, _C89 },
919 { rts_sin, 1, "sin", 1, _C89 },
920 { rts_cos, 1, "cos", 1, _C89 },
921 { rts_tan, 1, "tan", 1, _C89 },
922 { rts_asin, 1, "asin", 1, _C89 },
923 { rts_acos, 1, "acos", 1, _C89 },
924 { rts_atan, 1, "atan", 1, _C89 },
925 { rts_sinh, 1, "sinh", 1, _C89 },
926 { rts_cosh, 1, "cosh", 1, _C89 },
927 { rts_tanh, 1, "tanh", 1, _C89 },
929 { rts_fabsf, 1, "fabsf", 1, _C99 },
930 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
931 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
932 { rts_expf, 1, "expf", 1, _C99 },
933 { rts_exp2f, 1, "exp2f", 1, _C99 },
934 { rts_exp10f, 1, "exp10f", 1, _GNUC },
935 { rts_logf, 1, "logf", 1, _C99 },
936 { rts_log2f, 1, "log2f", 1, _C99 },
937 { rts_log10f, 1, "log10f", 1, _C99 },
938 { rts_powf, 1, "powf", 2, _C99 },
939 { rts_sinf, 1, "sinf", 1, _C99 },
940 { rts_cosf, 1, "cosf", 1, _C99 },
941 { rts_tanf, 1, "tanf", 1, _C99 },
942 { rts_asinf, 1, "asinf", 1, _C99 },
943 { rts_acosf, 1, "acosf", 1, _C99 },
944 { rts_atanf, 1, "atanf", 1, _C99 },
945 { rts_sinhf, 1, "sinhf", 1, _C99 },
946 { rts_coshf, 1, "coshf", 1, _C99 },
947 { rts_tanhf, 1, "tanhf", 1, _C99 },
949 { rts_fabsl, 1, "fabsl", 1, _C99 },
950 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
951 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
952 { rts_expl, 1, "expl", 1, _C99 },
953 { rts_exp2l, 1, "exp2l", 1, _C99 },
954 { rts_exp10l, 1, "exp10l", 1, _GNUC },
955 { rts_logl, 1, "logl", 1, _C99 },
956 { rts_log2l, 1, "log2l", 1, _C99 },
957 { rts_log10l, 1, "log10l", 1, _C99 },
958 { rts_powl, 1, "powl", 2, _C99 },
959 { rts_sinl, 1, "sinl", 1, _C99 },
960 { rts_cosl, 1, "cosl", 1, _C99 },
961 { rts_tanl, 1, "tanl", 1, _C99 },
962 { rts_asinl, 1, "asinl", 1, _C99 },
963 { rts_acosl, 1, "acosl", 1, _C99 },
964 { rts_atanl, 1, "atanl", 1, _C99 },
965 { rts_sinhl, 1, "sinhl", 1, _C99 },
966 { rts_coshl, 1, "coshl", 1, _C99 },
967 { rts_tanhl, 1, "tanhl", 1, _C99 },
969 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
970 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
971 { rts_strcmp, 1, "strcmp", 2, _C89 },
972 { rts_strncmp, 1, "strncmp", 3, _C89 }
975 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
978 * Mangles an entity linker (ld) name for win32 usage.
980 * @param ent the entity to be mangled
981 * @param declaration the declaration
983 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
987 if (is_Method_type(get_entity_type(ent)))
988 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
990 /* always add an underscore in win32 */
991 id = mangle(id_underscore, get_entity_ident(ent));
994 decl_modifiers_t decl_modifiers = declaration->modifiers;
995 if (decl_modifiers & DM_DLLIMPORT) {
996 /* add prefix for imported symbols */
997 id = mangle(id_imp, id);
1003 * Mangles an entity linker (ld) name for Linux ELF usage.
1005 * @param ent the entity to be mangled
1006 * @param declaration the declaration
1008 static ident *create_ld_ident_linux_elf(ir_entity *entity,
1009 declaration_t *declaration)
1012 return get_entity_ident(entity);
1016 * Mangles an entity linker (ld) name for Mach-O usage.
1018 * @param ent the entity to be mangled
1019 * @param declaration the declaration
1021 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
1024 ident *id = mangle(id_underscore, get_entity_ident(ent));
1028 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
1029 declaration_t *declaration);
1030 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1033 * Handle GNU attributes for entities
1035 * @param ent the entity
1036 * @param decl the routine declaration
1038 static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
1040 if (decl->modifiers & DM_PURE) {
1041 /* TRUE if the declaration includes the GNU
1042 __attribute__((pure)) specifier. */
1043 set_entity_additional_property(ent, mtp_property_pure);
1045 if (decl->modifiers & DM_CONST) {
1046 set_entity_additional_property(ent, mtp_property_const);
1047 have_const_functions = true;
1049 if (decl->modifiers & DM_USED) {
1050 /* TRUE if the declaration includes the GNU
1051 __attribute__((used)) specifier. */
1052 set_entity_stickyness(ent, stickyness_sticky);
1057 * Creates an entity representing a function.
1059 * @param declaration the function declaration
1061 static ir_entity *get_function_entity(declaration_t *declaration)
1063 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION ||
1064 declaration->declaration_kind == DECLARATION_KIND_INNER_FUNCTION)
1065 return declaration->v.entity;
1066 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
1068 symbol_t *symbol = declaration->symbol;
1069 ident *id = new_id_from_str(symbol->string);
1071 ir_type *global_type = get_glob_type();
1072 ir_type *ir_type_method = get_ir_type(declaration->type);
1073 assert(is_Method_type(ir_type_method));
1075 /* already an entity defined? */
1076 ir_entity *entity = entitymap_get(&entitymap, symbol);
1077 if (entity != NULL) {
1078 if (get_entity_visibility(entity) == visibility_external_allocated
1079 && declaration->init.statement != NULL) {
1080 set_entity_visibility(entity, visibility_external_visible);
1082 goto entity_created;
1085 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1086 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1087 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1089 handle_gnu_attributes_ent(entity, declaration);
1091 /* static inline => local
1092 * extern inline => local
1093 * inline without definition => local
1094 * inline with definition => external_visible */
1095 storage_class_tag_t const storage_class = (storage_class_tag_t)declaration->storage_class;
1096 bool const is_inline = declaration->is_inline;
1097 bool const has_body = declaration->init.statement != NULL;
1098 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1099 set_entity_visibility(entity, visibility_external_visible);
1100 } else if (storage_class == STORAGE_CLASS_STATIC ||
1101 (is_inline && has_body)) {
1103 /* this entity was declared, but is defined nowhere */
1104 set_entity_peculiarity(entity, peculiarity_description);
1106 set_entity_visibility(entity, visibility_local);
1107 } else if (has_body) {
1108 set_entity_visibility(entity, visibility_external_visible);
1110 set_entity_visibility(entity, visibility_external_allocated);
1112 set_entity_allocation(entity, allocation_static);
1114 /* We should check for file scope here, but as long as we compile C only
1115 this is not needed. */
1116 if (! firm_opt.freestanding) {
1117 /* check for a known runtime function */
1118 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1119 if (id != rts_idents[i])
1122 /* ignore those rts functions not necessary needed for current mode */
1123 if ((c_mode & rts_data[i].flags) == 0)
1125 assert(rts_entities[rts_data[i].id] == NULL);
1126 rts_entities[rts_data[i].id] = entity;
1130 entitymap_insert(&entitymap, symbol, entity);
1133 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1134 declaration->v.entity = entity;
1140 * Creates a Const node representing a constant.
1142 static ir_node *const_to_firm(const const_expression_t *cnst)
1144 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1145 ir_mode *mode = get_ir_mode(cnst->base.type);
1150 if (mode_is_float(mode)) {
1151 tv = new_tarval_from_double(cnst->v.float_value, mode);
1153 if (mode_is_signed(mode)) {
1154 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1156 len = snprintf(buf, sizeof(buf), "%llu",
1157 (unsigned long long) cnst->v.int_value);
1159 tv = new_tarval_from_str(buf, len, mode);
1162 return new_d_Const(dbgi, mode, tv);
1166 * Creates a Const node representing a character constant.
1168 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1170 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1171 ir_mode *mode = get_ir_mode(cnst->base.type);
1173 long long int v = 0;
1174 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1175 if (char_is_signed) {
1176 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1178 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1182 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1183 tarval *tv = new_tarval_from_str(buf, len, mode);
1185 return new_d_Const(dbgi, mode, tv);
1189 * Creates a Const node representing a wide character constant.
1191 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1193 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1194 ir_mode *mode = get_ir_mode(cnst->base.type);
1196 long long int v = cnst->v.wide_character.begin[0];
1199 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1200 tarval *tv = new_tarval_from_str(buf, len, mode);
1202 return new_d_Const(dbgi, mode, tv);
1206 * Creates a SymConst for a given entity.
1208 * @param dbgi debug info
1209 * @param mode the (reference) mode for the SymConst
1210 * @param entity the entity
1212 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1215 assert(entity != NULL);
1216 union symconst_symbol sym;
1217 sym.entity_p = entity;
1218 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1222 * Creates a SymConst node representing a string constant.
1224 * @param src_pos the source position of the string constant
1225 * @param id_prefix a prefix for the name of the generated string constant
1226 * @param value the value of the string constant
1228 static ir_node *string_to_firm(const source_position_t *const src_pos,
1229 const char *const id_prefix,
1230 const string_t *const value)
1232 ir_type *const global_type = get_glob_type();
1233 dbg_info *const dbgi = get_dbg_info(src_pos);
1234 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1235 ir_type_const_char, dbgi);
1237 ident *const id = id_unique(id_prefix);
1238 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1239 set_entity_ld_ident(entity, id);
1240 set_entity_variability(entity, variability_constant);
1241 set_entity_allocation(entity, allocation_static);
1243 ir_type *const elem_type = ir_type_const_char;
1244 ir_mode *const mode = get_type_mode(elem_type);
1246 const char* const string = value->begin;
1247 const size_t slen = value->size;
1249 set_array_lower_bound_int(type, 0, 0);
1250 set_array_upper_bound_int(type, 0, slen);
1251 set_type_size_bytes(type, slen);
1252 set_type_state(type, layout_fixed);
1254 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1255 for(size_t i = 0; i < slen; ++i) {
1256 tvs[i] = new_tarval_from_long(string[i], mode);
1259 set_array_entity_values(entity, tvs, slen);
1262 return create_symconst(dbgi, mode_P_data, entity);
1266 * Creates a SymConst node representing a string literal.
1268 * @param literal the string literal
1270 static ir_node *string_literal_to_firm(
1271 const string_literal_expression_t* literal)
1273 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1278 * Creates a SymConst node representing a wide string literal.
1280 * @param literal the wide string literal
1282 static ir_node *wide_string_literal_to_firm(
1283 const wide_string_literal_expression_t* const literal)
1285 ir_type *const global_type = get_glob_type();
1286 ir_type *const elem_type = ir_type_wchar_t;
1287 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1288 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1291 ident *const id = id_unique("Lstr.%u");
1292 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1293 set_entity_ld_ident(entity, id);
1294 set_entity_variability(entity, variability_constant);
1295 set_entity_allocation(entity, allocation_static);
1297 ir_mode *const mode = get_type_mode(elem_type);
1299 const wchar_rep_t *const string = literal->value.begin;
1300 const size_t slen = literal->value.size;
1302 set_array_lower_bound_int(type, 0, 0);
1303 set_array_upper_bound_int(type, 0, slen);
1304 set_type_size_bytes(type, slen);
1305 set_type_state(type, layout_fixed);
1307 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1308 for(size_t i = 0; i < slen; ++i) {
1309 tvs[i] = new_tarval_from_long(string[i], mode);
1312 set_array_entity_values(entity, tvs, slen);
1315 return create_symconst(dbgi, mode_P_data, entity);
1318 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1319 ir_node *const addr)
1321 ir_type *irtype = get_ir_type(type);
1322 if (is_compound_type(irtype)
1323 || is_Method_type(irtype)
1324 || is_Array_type(irtype)) {
1328 ir_mode *const mode = get_type_mode(irtype);
1329 ir_node *const memory = get_store();
1330 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1331 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1332 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1334 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1335 set_Load_volatility(load, volatility_is_volatile);
1338 set_store(load_mem);
1343 * Creates a strict Conv if neccessary.
1345 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1347 ir_mode *mode = get_irn_mode(node);
1349 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1351 if (!mode_is_float(mode))
1354 /* check if there is already a Conv */
1355 if (is_Conv(node)) {
1356 /* convert it into a strict Conv */
1357 set_Conv_strict(node, 1);
1361 /* otherwise create a new one */
1362 return new_d_strictConv(dbgi, node, mode);
1365 static ir_node *get_global_var_address(dbg_info *const dbgi,
1366 const declaration_t *const decl)
1368 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1370 ir_entity *const entity = decl->v.entity;
1371 switch ((storage_class_tag_t)decl->storage_class) {
1372 case STORAGE_CLASS_THREAD:
1373 case STORAGE_CLASS_THREAD_EXTERN:
1374 case STORAGE_CLASS_THREAD_STATIC: {
1375 ir_node *const no_mem = new_NoMem();
1376 ir_node *const tls = get_irg_tls(current_ir_graph);
1377 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1381 return create_symconst(dbgi, mode_P_data, entity);
1386 * Returns the correct base address depending on whether it is a parameter or a
1387 * normal local variable.
1389 static ir_node *get_local_frame(ir_entity *const ent)
1391 ir_graph *const irg = current_ir_graph;
1392 const ir_type *const owner = get_entity_owner(ent);
1393 if (owner == get_irg_frame_type(irg)) {
1394 return get_irg_frame(irg);
1396 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1397 return get_irg_value_param_base(irg);
1401 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1403 ir_mode *value_mode = get_irn_mode(value);
1405 if (value_mode == dest_mode || is_Bad(value))
1408 if (dest_mode == mode_b) {
1409 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1410 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1411 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1415 return new_d_Conv(dbgi, value, dest_mode);
1419 * Keep all memory edges of the given block.
1421 static void keep_all_memory(ir_node *block) {
1422 ir_node *old = get_cur_block();
1424 set_cur_block(block);
1425 keep_alive(get_store());
1426 /* TODO: keep all memory edges from restricted pointers */
1430 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1432 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1433 declaration_t *declaration = ref->declaration;
1434 type_t *type = skip_typeref(declaration->type);
1436 /* make sure the type is constructed */
1437 (void) get_ir_type(type);
1439 switch ((declaration_kind_t)declaration->declaration_kind) {
1440 case DECLARATION_KIND_TYPE:
1441 case DECLARATION_KIND_UNKNOWN:
1444 case DECLARATION_KIND_ENUM_ENTRY: {
1445 ir_mode *const mode = get_ir_mode(type);
1446 return new_Const(mode, declaration->v.enum_val);
1449 case DECLARATION_KIND_LOCAL_VARIABLE: {
1450 ir_mode *const mode = get_ir_mode(type);
1451 return get_value(declaration->v.value_number, mode);
1453 case DECLARATION_KIND_FUNCTION: {
1454 ir_mode *const mode = get_ir_mode(type);
1455 return create_symconst(dbgi, mode, declaration->v.entity);
1457 case DECLARATION_KIND_INNER_FUNCTION: {
1458 ir_mode *const mode = get_ir_mode(type);
1459 if (! declaration->goto_to_outer && !declaration->need_closure) {
1460 /* inner function not using the closure */
1461 return create_symconst(dbgi, mode, declaration->v.entity);
1463 /* TODO: need trampoline here */
1464 panic("Trampoline code not implemented");
1465 return create_symconst(dbgi, mode, declaration->v.entity);
1468 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1469 ir_node *const addr = get_global_var_address(dbgi, declaration);
1470 return deref_address(dbgi, declaration->type, addr);
1473 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1474 ir_entity *entity = declaration->v.entity;
1475 ir_node *frame = get_local_frame(entity);
1476 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1477 return deref_address(dbgi, declaration->type, sel);
1480 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1481 return declaration->v.vla_base;
1483 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1484 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1485 case DECLARATION_KIND_COMPOUND_MEMBER:
1486 case DECLARATION_KIND_LABEL_BLOCK:
1487 panic("not implemented reference type");
1490 panic("reference to declaration with unknown type found");
1493 static ir_node *reference_addr(const reference_expression_t *ref)
1495 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1496 declaration_t *declaration = ref->declaration;
1498 switch((declaration_kind_t) declaration->declaration_kind) {
1499 case DECLARATION_KIND_TYPE:
1500 case DECLARATION_KIND_UNKNOWN:
1502 case DECLARATION_KIND_LOCAL_VARIABLE:
1503 /* you can store to a local variable (so we don't panic but return NULL
1504 * as an indicator for no real address) */
1506 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1507 ir_node *const addr = get_global_var_address(dbgi, declaration);
1510 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1511 ir_entity *entity = declaration->v.entity;
1512 ir_node *frame = get_local_frame(entity);
1513 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1518 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1519 return declaration->v.vla_base;
1521 case DECLARATION_KIND_ENUM_ENTRY:
1522 panic("trying to reference enum entry");
1524 case DECLARATION_KIND_FUNCTION: {
1525 type_t *const type = skip_typeref(declaration->type);
1526 ir_mode *const mode = get_ir_mode(type);
1527 return create_symconst(dbgi, mode, declaration->v.entity);
1530 case DECLARATION_KIND_INNER_FUNCTION:
1531 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1532 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1533 case DECLARATION_KIND_COMPOUND_MEMBER:
1534 case DECLARATION_KIND_LABEL_BLOCK:
1535 panic("not implemented reference type");
1538 panic("reference to declaration with unknown type found");
1542 * Transform calls to builtin functions.
1544 static ir_node *process_builtin_call(const call_expression_t *call)
1546 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1548 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1549 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1551 type_t *type = skip_typeref(builtin->base.type);
1552 assert(is_type_pointer(type));
1554 type_t *function_type = skip_typeref(type->pointer.points_to);
1555 symbol_t *symbol = builtin->symbol;
1557 switch(symbol->ID) {
1558 case T___builtin_alloca: {
1559 if (call->arguments == NULL || call->arguments->next != NULL) {
1560 panic("invalid number of parameters on __builtin_alloca");
1562 expression_t *argument = call->arguments->expression;
1563 ir_node *size = expression_to_firm(argument);
1565 ir_node *store = get_store();
1566 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1568 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1570 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1575 case T___builtin_huge_val:
1576 case T___builtin_inf:
1577 case T___builtin_inff:
1578 case T___builtin_infl: {
1579 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1580 tarval *tv = get_mode_infinite(mode);
1581 ir_node *res = new_d_Const(dbgi, mode, tv);
1584 case T___builtin_nan:
1585 case T___builtin_nanf:
1586 case T___builtin_nanl: {
1587 /* Ignore string for now... */
1588 assert(is_type_function(function_type));
1589 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1590 tarval *tv = get_mode_NAN(mode);
1591 ir_node *res = new_d_Const(dbgi, mode, tv);
1594 case T___builtin_va_end:
1597 panic("Unsupported builtin found\n");
1602 * Transform a call expression.
1603 * Handles some special cases, like alloca() calls, which must be resolved
1604 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1605 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1608 static ir_node *call_expression_to_firm(const call_expression_t *call)
1610 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1611 assert(get_cur_block() != NULL);
1613 expression_t *function = call->function;
1614 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1615 return process_builtin_call(call);
1617 if (function->kind == EXPR_REFERENCE) {
1618 const reference_expression_t *ref = &function->reference;
1619 declaration_t *declaration = ref->declaration;
1621 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1622 if (declaration->v.entity == rts_entities[rts_alloca]) {
1623 /* handle alloca() call */
1624 expression_t *argument = call->arguments->expression;
1625 ir_node *size = expression_to_firm(argument);
1627 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1629 ir_node *store = get_store();
1630 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1631 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1633 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1635 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1641 ir_node *callee = expression_to_firm(function);
1643 type_t *type = skip_typeref(function->base.type);
1644 assert(is_type_pointer(type));
1645 pointer_type_t *pointer_type = &type->pointer;
1646 type_t *points_to = skip_typeref(pointer_type->points_to);
1647 assert(is_type_function(points_to));
1648 function_type_t *function_type = &points_to->function;
1650 int n_parameters = 0;
1651 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1652 ir_type *new_method_type = NULL;
1653 if (function_type->variadic || function_type->unspecified_parameters) {
1654 const call_argument_t *argument = call->arguments;
1655 for( ; argument != NULL; argument = argument->next) {
1659 /* we need to construct a new method type matching the call
1661 int n_res = get_method_n_ress(ir_method_type);
1662 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1663 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1664 n_parameters, n_res, dbgi);
1665 set_method_calling_convention(new_method_type,
1666 get_method_calling_convention(ir_method_type));
1667 set_method_additional_properties(new_method_type,
1668 get_method_additional_properties(ir_method_type));
1669 set_method_variadicity(new_method_type,
1670 get_method_variadicity(ir_method_type));
1672 for(int i = 0; i < n_res; ++i) {
1673 set_method_res_type(new_method_type, i,
1674 get_method_res_type(ir_method_type, i));
1676 argument = call->arguments;
1677 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1678 expression_t *expression = argument->expression;
1679 ir_type *irtype = get_ir_type(expression->base.type);
1680 set_method_param_type(new_method_type, i, irtype);
1682 ir_method_type = new_method_type;
1684 n_parameters = get_method_n_params(ir_method_type);
1687 ir_node *in[n_parameters];
1689 const call_argument_t *argument = call->arguments;
1690 for(int n = 0; n < n_parameters; ++n) {
1691 expression_t *expression = argument->expression;
1692 ir_node *arg_node = expression_to_firm(expression);
1694 arg_node = do_strict_conv(dbgi, arg_node);
1698 argument = argument->next;
1701 ir_node *store = get_store();
1702 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1704 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1707 type_t *return_type = skip_typeref(function_type->return_type);
1708 ir_node *result = NULL;
1710 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1712 if (is_type_scalar(return_type)) {
1713 mode = get_ir_mode(return_type);
1717 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1718 result = new_d_Proj(dbgi, resproj, mode, 0);
1721 if (function->kind == EXPR_REFERENCE &&
1722 function->reference.declaration->modifiers & DM_NORETURN) {
1723 /* A dead end: Keep the Call and the Block. Also place all further
1724 * nodes into a new and unreachable block. */
1726 keep_alive(get_cur_block());
1733 static void statement_to_firm(statement_t *statement);
1734 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1736 static ir_node *expression_to_addr(const expression_t *expression);
1737 static ir_node *create_condition_evaluation(const expression_t *expression,
1738 ir_node *true_block,
1739 ir_node *false_block);
1741 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1744 value = do_strict_conv(dbgi, value);
1746 ir_node *memory = get_store();
1748 if (is_type_scalar(type)) {
1749 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1750 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1751 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1752 set_Store_volatility(store, volatility_is_volatile);
1753 set_store(store_mem);
1755 ir_type *irtype = get_ir_type(type);
1756 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1757 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1758 set_store(copyb_mem);
1762 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1764 tarval *all_one = get_mode_all_one(mode);
1765 int mode_size = get_mode_size_bits(mode);
1767 assert(offset >= 0);
1769 assert(offset + size <= mode_size);
1770 if (size == mode_size) {
1774 long shiftr = get_mode_size_bits(mode) - size;
1775 long shiftl = offset;
1776 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1777 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1778 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1779 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1784 static void bitfield_store_to_firm(dbg_info *dbgi,
1785 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1787 ir_type *entity_type = get_entity_type(entity);
1788 ir_type *base_type = get_primitive_base_type(entity_type);
1789 assert(base_type != NULL);
1790 ir_mode *mode = get_type_mode(base_type);
1792 value = create_conv(dbgi, value, mode);
1794 /* kill upper bits of value and shift to right position */
1795 int bitoffset = get_entity_offset_bits_remainder(entity);
1796 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1798 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1799 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1800 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1801 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1802 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1803 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1805 /* load current value */
1806 ir_node *mem = get_store();
1807 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1808 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1809 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1810 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1811 tarval *inv_mask = tarval_not(shift_mask);
1812 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1813 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1815 /* construct new value and store */
1816 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1817 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1818 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1819 set_store(store_mem);
1822 set_Load_volatility(load, volatility_is_volatile);
1823 set_Store_volatility(store, volatility_is_volatile);
1827 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1830 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1831 type_t *type = expression->base.type;
1832 ir_mode *mode = get_ir_mode(type);
1833 ir_node *mem = get_store();
1834 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1835 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1836 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1838 load_res = create_conv(dbgi, load_res, mode_int);
1840 set_store(load_mem);
1842 /* kill upper bits */
1843 ir_entity *entity = expression->compound_entry->v.entity;
1844 int bitoffset = get_entity_offset_bits_remainder(entity);
1845 ir_type *entity_type = get_entity_type(entity);
1846 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1847 long shift_bitsl = machine_size - bitoffset - bitsize;
1848 assert(shift_bitsl >= 0);
1849 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1850 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1851 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1853 long shift_bitsr = bitoffset + shift_bitsl;
1854 assert(shift_bitsr <= (long) machine_size);
1855 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1856 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1858 if (mode_is_signed(mode)) {
1859 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1861 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1864 return create_conv(dbgi, shiftr, mode);
1867 static void set_value_for_expression_addr(const expression_t *expression,
1868 ir_node *value, ir_node *addr)
1870 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1871 value = do_strict_conv(dbgi, value);
1873 if (expression->kind == EXPR_REFERENCE) {
1874 const reference_expression_t *ref = &expression->reference;
1876 declaration_t *declaration = ref->declaration;
1877 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1878 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1879 set_value(declaration->v.value_number, value);
1885 addr = expression_to_addr(expression);
1887 type_t *type = skip_typeref(expression->base.type);
1889 if (expression->kind == EXPR_SELECT) {
1890 const select_expression_t *select = &expression->select;
1892 declaration_t *declaration = select->compound_entry;
1893 if (declaration->type->kind == TYPE_BITFIELD) {
1894 ir_entity *entity = select->compound_entry->v.entity;
1896 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1897 bitfield_store_to_firm(dbgi, entity, addr, value, set_volatile);
1902 assign_value(dbgi, addr, type, value);
1905 static void set_value_for_expression(const expression_t *expression,
1908 set_value_for_expression_addr(expression, value, NULL);
1911 static ir_node *get_value_from_lvalue(const expression_t *expression,
1914 if (expression->kind == EXPR_REFERENCE) {
1915 const reference_expression_t *ref = &expression->reference;
1917 declaration_t *declaration = ref->declaration;
1918 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1919 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1920 assert(addr == NULL);
1921 ir_mode *mode = get_ir_mode(expression->base.type);
1922 return get_value(declaration->v.value_number, mode);
1926 assert(addr != NULL);
1927 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1930 if (expression->kind == EXPR_SELECT &&
1931 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1932 value = bitfield_extract_to_firm(&expression->select, addr);
1934 value = deref_address(dbgi, expression->base.type, addr);
1941 static ir_node *create_incdec(const unary_expression_t *expression)
1943 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1944 const expression_t *value_expr = expression->value;
1945 ir_node *addr = expression_to_addr(value_expr);
1946 ir_node *value = get_value_from_lvalue(value_expr, addr);
1948 type_t *type = skip_typeref(expression->base.type);
1949 ir_mode *mode = get_ir_mode(expression->base.type);
1952 if (is_type_pointer(type)) {
1953 pointer_type_t *pointer_type = &type->pointer;
1954 offset = get_type_size(pointer_type->points_to);
1956 assert(is_type_arithmetic(type));
1957 offset = new_Const(mode, get_mode_one(mode));
1961 ir_node *store_value;
1962 switch(expression->base.kind) {
1963 case EXPR_UNARY_POSTFIX_INCREMENT:
1965 store_value = new_d_Add(dbgi, value, offset, mode);
1967 case EXPR_UNARY_POSTFIX_DECREMENT:
1969 store_value = new_d_Sub(dbgi, value, offset, mode);
1971 case EXPR_UNARY_PREFIX_INCREMENT:
1972 result = new_d_Add(dbgi, value, offset, mode);
1973 store_value = result;
1975 case EXPR_UNARY_PREFIX_DECREMENT:
1976 result = new_d_Sub(dbgi, value, offset, mode);
1977 store_value = result;
1980 panic("no incdec expr in create_incdec");
1983 set_value_for_expression_addr(value_expr, store_value, addr);
1988 static bool is_local_variable(expression_t *expression)
1990 if (expression->kind != EXPR_REFERENCE)
1992 reference_expression_t *ref_expr = &expression->reference;
1993 declaration_t *declaration = ref_expr->declaration;
1994 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1997 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2000 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2001 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2002 case EXPR_BINARY_NOTEQUAL:
2003 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2004 case EXPR_BINARY_ISLESS:
2005 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2006 case EXPR_BINARY_ISLESSEQUAL:
2007 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2008 case EXPR_BINARY_ISGREATER:
2009 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2010 case EXPR_BINARY_ISGREATEREQUAL:
2011 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2012 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2017 panic("trying to get pn_Cmp from non-comparison binexpr type");
2021 * Handle the assume optimizer hint: check if a Confirm
2022 * node can be created.
2024 * @param dbi debug info
2025 * @param expr the IL assume expression
2027 * we support here only some simple cases:
2032 static ir_node *handle_assume_compare(dbg_info *dbi,
2033 const binary_expression_t *expression)
2035 expression_t *op1 = expression->left;
2036 expression_t *op2 = expression->right;
2037 declaration_t *var2, *var = NULL;
2038 ir_node *res = NULL;
2041 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2043 if (is_local_variable(op1) && is_local_variable(op2)) {
2044 var = op1->reference.declaration;
2045 var2 = op2->reference.declaration;
2047 type_t *const type = skip_typeref(var->type);
2048 ir_mode *const mode = get_ir_mode(type);
2050 ir_node *const irn1 = get_value(var->v.value_number, mode);
2051 ir_node *const irn2 = get_value(var2->v.value_number, mode);
2053 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2054 set_value(var2->v.value_number, res);
2056 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2057 set_value(var->v.value_number, res);
2063 if (is_local_variable(op1) && is_constant_expression(op2)) {
2064 var = op1->reference.declaration;
2066 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2067 cmp_val = get_inversed_pnc(cmp_val);
2068 var = op2->reference.declaration;
2073 type_t *const type = skip_typeref(var->type);
2074 ir_mode *const mode = get_ir_mode(type);
2076 res = get_value(var->v.value_number, mode);
2077 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2078 set_value(var->v.value_number, res);
2084 * Handle the assume optimizer hint.
2086 * @param dbi debug info
2087 * @param expr the IL assume expression
2089 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2090 switch(expression->kind) {
2091 case EXPR_BINARY_EQUAL:
2092 case EXPR_BINARY_NOTEQUAL:
2093 case EXPR_BINARY_LESS:
2094 case EXPR_BINARY_LESSEQUAL:
2095 case EXPR_BINARY_GREATER:
2096 case EXPR_BINARY_GREATEREQUAL:
2097 return handle_assume_compare(dbi, &expression->binary);
2103 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2105 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2106 type_t *type = skip_typeref(expression->base.type);
2108 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2109 return expression_to_addr(expression->value);
2111 const expression_t *value = expression->value;
2113 switch(expression->base.kind) {
2114 case EXPR_UNARY_NEGATE: {
2115 ir_node *value_node = expression_to_firm(value);
2116 ir_mode *mode = get_ir_mode(type);
2117 return new_d_Minus(dbgi, value_node, mode);
2119 case EXPR_UNARY_PLUS:
2120 return expression_to_firm(value);
2121 case EXPR_UNARY_BITWISE_NEGATE: {
2122 ir_node *value_node = expression_to_firm(value);
2123 ir_mode *mode = get_ir_mode(type);
2124 return new_d_Not(dbgi, value_node, mode);
2126 case EXPR_UNARY_NOT: {
2127 ir_node *value_node = _expression_to_firm(value);
2128 value_node = create_conv(dbgi, value_node, mode_b);
2129 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2132 case EXPR_UNARY_DEREFERENCE: {
2133 ir_node *value_node = expression_to_firm(value);
2134 type_t *value_type = skip_typeref(value->base.type);
2135 assert(is_type_pointer(value_type));
2136 type_t *points_to = value_type->pointer.points_to;
2137 return deref_address(dbgi, points_to, value_node);
2139 case EXPR_UNARY_POSTFIX_INCREMENT:
2140 case EXPR_UNARY_POSTFIX_DECREMENT:
2141 case EXPR_UNARY_PREFIX_INCREMENT:
2142 case EXPR_UNARY_PREFIX_DECREMENT:
2143 return create_incdec(expression);
2144 case EXPR_UNARY_CAST: {
2145 ir_node *value_node = expression_to_firm(value);
2146 if (is_type_scalar(type)) {
2147 ir_mode *mode = get_ir_mode(type);
2148 ir_node *node = create_conv(dbgi, value_node, mode);
2149 node = do_strict_conv(dbgi, node);
2152 /* make sure firm type is constructed */
2153 (void) get_ir_type(type);
2157 case EXPR_UNARY_CAST_IMPLICIT: {
2158 ir_node *value_node = expression_to_firm(value);
2159 if (is_type_scalar(type)) {
2160 ir_mode *mode = get_ir_mode(type);
2161 return create_conv(dbgi, value_node, mode);
2166 case EXPR_UNARY_ASSUME:
2167 if (firm_opt.confirm)
2168 return handle_assume(dbgi, value);
2175 panic("invalid UNEXPR type found");
2179 * produces a 0/1 depending of the value of a mode_b node
2181 static ir_node *produce_condition_result(const expression_t *expression,
2184 ir_mode *mode = get_ir_mode(expression->base.type);
2185 ir_node *cur_block = get_cur_block();
2187 ir_node *one_block = new_immBlock();
2188 ir_node *one = new_Const(mode, get_mode_one(mode));
2189 ir_node *jmp_one = new_d_Jmp(dbgi);
2191 ir_node *zero_block = new_immBlock();
2192 ir_node *zero = new_Const(mode, get_mode_null(mode));
2193 ir_node *jmp_zero = new_d_Jmp(dbgi);
2195 set_cur_block(cur_block);
2196 create_condition_evaluation(expression, one_block, zero_block);
2197 mature_immBlock(one_block);
2198 mature_immBlock(zero_block);
2200 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2201 new_Block(2, in_cf);
2203 ir_node *in[2] = { one, zero };
2204 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2209 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2210 ir_node *value, type_t *type)
2212 pointer_type_t *const pointer_type = &type->pointer;
2213 type_t *const points_to = skip_typeref(pointer_type->points_to);
2214 unsigned elem_size = get_type_size_const(points_to);
2216 /* gcc extension: allow arithmetic with void * and function * */
2217 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2218 is_type_function(points_to)) {
2222 assert(elem_size >= 1);
2226 value = create_conv(dbgi, value, mode_int);
2227 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2228 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2232 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2233 ir_node *left, ir_node *right)
2236 type_t *type_left = skip_typeref(expression->left->base.type);
2237 type_t *type_right = skip_typeref(expression->right->base.type);
2239 expression_kind_t kind = expression->base.kind;
2242 case EXPR_BINARY_SHIFTLEFT:
2243 case EXPR_BINARY_SHIFTRIGHT:
2244 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2245 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2246 mode = get_irn_mode(left);
2247 right = create_conv(dbgi, right, mode_uint);
2250 case EXPR_BINARY_SUB:
2251 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2252 const pointer_type_t *const ptr_type = &type_left->pointer;
2254 mode = get_ir_mode(expression->base.type);
2255 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2256 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2257 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2258 ir_node *const no_mem = new_NoMem();
2259 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2260 mode, op_pin_state_floats);
2261 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2264 case EXPR_BINARY_SUB_ASSIGN:
2265 if (is_type_pointer(type_left)) {
2266 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2267 mode = get_ir_mode(type_left);
2272 case EXPR_BINARY_ADD:
2273 case EXPR_BINARY_ADD_ASSIGN:
2274 if (is_type_pointer(type_left)) {
2275 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2276 mode = get_ir_mode(type_left);
2278 } else if (is_type_pointer(type_right)) {
2279 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2280 mode = get_ir_mode(type_right);
2287 mode = get_irn_mode(right);
2288 left = create_conv(dbgi, left, mode);
2293 case EXPR_BINARY_ADD_ASSIGN:
2294 case EXPR_BINARY_ADD:
2295 return new_d_Add(dbgi, left, right, mode);
2296 case EXPR_BINARY_SUB_ASSIGN:
2297 case EXPR_BINARY_SUB:
2298 return new_d_Sub(dbgi, left, right, mode);
2299 case EXPR_BINARY_MUL_ASSIGN:
2300 case EXPR_BINARY_MUL:
2301 return new_d_Mul(dbgi, left, right, mode);
2302 case EXPR_BINARY_BITWISE_AND:
2303 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2304 return new_d_And(dbgi, left, right, mode);
2305 case EXPR_BINARY_BITWISE_OR:
2306 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2307 return new_d_Or(dbgi, left, right, mode);
2308 case EXPR_BINARY_BITWISE_XOR:
2309 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2310 return new_d_Eor(dbgi, left, right, mode);
2311 case EXPR_BINARY_SHIFTLEFT:
2312 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2313 return new_d_Shl(dbgi, left, right, mode);
2314 case EXPR_BINARY_SHIFTRIGHT:
2315 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2316 if (mode_is_signed(mode)) {
2317 return new_d_Shrs(dbgi, left, right, mode);
2319 return new_d_Shr(dbgi, left, right, mode);
2321 case EXPR_BINARY_DIV:
2322 case EXPR_BINARY_DIV_ASSIGN: {
2323 ir_node *pin = new_Pin(new_NoMem());
2326 if (mode_is_float(mode)) {
2327 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2328 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2330 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2331 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2335 case EXPR_BINARY_MOD:
2336 case EXPR_BINARY_MOD_ASSIGN: {
2337 ir_node *pin = new_Pin(new_NoMem());
2338 assert(!mode_is_float(mode));
2339 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2340 op_pin_state_floats);
2341 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2345 panic("unexpected expression kind");
2349 static ir_node *create_lazy_op(const binary_expression_t *expression)
2351 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2352 type_t *type = expression->base.type;
2353 ir_mode *mode = get_ir_mode(type);
2355 if (is_constant_expression(expression->left)) {
2356 long val = fold_constant(expression->left);
2357 expression_kind_t ekind = expression->base.kind;
2358 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2359 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2360 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2361 return expression_to_firm(expression->right);
2363 return new_Const(mode, get_mode_one(mode));
2367 return produce_condition_result((const expression_t*) expression, dbgi);
2370 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2371 ir_node *right, ir_mode *mode);
2373 static ir_node *create_assign_binop(const binary_expression_t *expression)
2375 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2376 const expression_t *left_expr = expression->left;
2377 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2378 ir_node *right = expression_to_firm(expression->right);
2379 ir_node *left_addr = expression_to_addr(left_expr);
2380 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2381 ir_node *result = create_op(dbgi, expression, left, right);
2383 result = create_conv(dbgi, result, left_mode);
2384 result = do_strict_conv(dbgi, result);
2386 set_value_for_expression_addr(left_expr, result, left_addr);
2391 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2393 expression_kind_t kind = expression->base.kind;
2396 case EXPR_BINARY_EQUAL:
2397 case EXPR_BINARY_NOTEQUAL:
2398 case EXPR_BINARY_LESS:
2399 case EXPR_BINARY_LESSEQUAL:
2400 case EXPR_BINARY_GREATER:
2401 case EXPR_BINARY_GREATEREQUAL:
2402 case EXPR_BINARY_ISGREATER:
2403 case EXPR_BINARY_ISGREATEREQUAL:
2404 case EXPR_BINARY_ISLESS:
2405 case EXPR_BINARY_ISLESSEQUAL:
2406 case EXPR_BINARY_ISLESSGREATER:
2407 case EXPR_BINARY_ISUNORDERED: {
2408 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2409 ir_node *left = expression_to_firm(expression->left);
2410 ir_node *right = expression_to_firm(expression->right);
2411 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2412 long pnc = get_pnc(kind, expression->left->base.type);
2413 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2416 case EXPR_BINARY_ASSIGN: {
2417 ir_node *addr = expression_to_addr(expression->left);
2418 ir_node *right = expression_to_firm(expression->right);
2419 set_value_for_expression_addr(expression->left, right, addr);
2423 case EXPR_BINARY_ADD:
2424 case EXPR_BINARY_SUB:
2425 case EXPR_BINARY_MUL:
2426 case EXPR_BINARY_DIV:
2427 case EXPR_BINARY_MOD:
2428 case EXPR_BINARY_BITWISE_AND:
2429 case EXPR_BINARY_BITWISE_OR:
2430 case EXPR_BINARY_BITWISE_XOR:
2431 case EXPR_BINARY_SHIFTLEFT:
2432 case EXPR_BINARY_SHIFTRIGHT:
2434 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2435 ir_node *left = expression_to_firm(expression->left);
2436 ir_node *right = expression_to_firm(expression->right);
2437 return create_op(dbgi, expression, left, right);
2439 case EXPR_BINARY_LOGICAL_AND:
2440 case EXPR_BINARY_LOGICAL_OR:
2441 return create_lazy_op(expression);
2442 case EXPR_BINARY_COMMA:
2443 /* create side effects of left side */
2444 (void) expression_to_firm(expression->left);
2445 return _expression_to_firm(expression->right);
2447 case EXPR_BINARY_ADD_ASSIGN:
2448 case EXPR_BINARY_SUB_ASSIGN:
2449 case EXPR_BINARY_MUL_ASSIGN:
2450 case EXPR_BINARY_MOD_ASSIGN:
2451 case EXPR_BINARY_DIV_ASSIGN:
2452 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2453 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2454 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2455 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2456 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2457 return create_assign_binop(expression);
2458 case EXPR_BINARY_BUILTIN_EXPECT:
2459 return _expression_to_firm(expression->left);
2461 panic("TODO binexpr type");
2465 static ir_node *array_access_addr(const array_access_expression_t *expression)
2467 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2468 ir_node *base_addr = expression_to_firm(expression->array_ref);
2469 ir_node *offset = expression_to_firm(expression->index);
2471 type_t *offset_type = skip_typeref(expression->index->base.type);
2473 if (is_type_signed(offset_type)) {
2474 mode = get_ir_mode(type_ssize_t);
2476 mode = get_ir_mode(type_size_t);
2478 offset = create_conv(dbgi, offset, mode);
2480 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2481 assert(is_type_pointer(ref_type));
2482 pointer_type_t *pointer_type = &ref_type->pointer;
2484 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2485 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2486 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2488 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2493 static ir_node *array_access_to_firm(
2494 const array_access_expression_t *expression)
2496 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2497 ir_node *addr = array_access_addr(expression);
2498 type_t *type = revert_automatic_type_conversion(
2499 (const expression_t*) expression);
2500 type = skip_typeref(type);
2502 return deref_address(dbgi, type, addr);
2505 static long get_offsetof_offset(const offsetof_expression_t *expression)
2507 type_t *orig_type = expression->type;
2510 designator_t *designator = expression->designator;
2511 for( ; designator != NULL; designator = designator->next) {
2512 type_t *type = skip_typeref(orig_type);
2513 /* be sure the type is constructed */
2514 (void) get_ir_type(type);
2516 if (designator->symbol != NULL) {
2517 assert(is_type_compound(type));
2518 symbol_t *symbol = designator->symbol;
2520 declaration_t *declaration = type->compound.declaration;
2521 declaration_t *iter = declaration->scope.declarations;
2522 for( ; iter != NULL; iter = iter->next) {
2523 if (iter->symbol == symbol) {
2527 assert(iter != NULL);
2529 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2530 offset += get_entity_offset(iter->v.entity);
2532 orig_type = iter->type;
2534 expression_t *array_index = designator->array_index;
2535 assert(designator->array_index != NULL);
2536 assert(is_type_array(type));
2538 long index = fold_constant(array_index);
2539 ir_type *arr_type = get_ir_type(type);
2540 ir_type *elem_type = get_array_element_type(arr_type);
2541 long elem_size = get_type_size_bytes(elem_type);
2543 offset += index * elem_size;
2545 orig_type = type->array.element_type;
2552 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2554 ir_mode *mode = get_ir_mode(expression->base.type);
2555 long offset = get_offsetof_offset(expression);
2556 tarval *tv = new_tarval_from_long(offset, mode);
2557 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2559 return new_d_Const(dbgi, mode, tv);
2562 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2563 ir_entity *entity, type_t *type);
2565 static ir_node *compound_literal_to_firm(
2566 const compound_literal_expression_t *expression)
2568 type_t *type = expression->type;
2570 /* create an entity on the stack */
2571 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2573 ident *const id = id_unique("CompLit.%u");
2574 ir_type *const irtype = get_ir_type(type);
2575 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2576 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2577 set_entity_ld_ident(entity, id);
2579 set_entity_variability(entity, variability_uninitialized);
2581 /* create initialisation code */
2582 initializer_t *initializer = expression->initializer;
2583 create_local_initializer(initializer, dbgi, entity, type);
2585 /* create a sel for the compound literal address */
2586 ir_node *frame = get_local_frame(entity);
2587 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2592 * Transform a sizeof expression into Firm code.
2594 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2596 type_t *type = expression->type;
2598 type = expression->tp_expression->base.type;
2599 assert(type != NULL);
2602 type = skip_typeref(type);
2603 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2604 if (is_type_array(type) && type->array.is_vla
2605 && expression->tp_expression != NULL) {
2606 expression_to_firm(expression->tp_expression);
2609 return get_type_size(type);
2613 * Transform an alignof expression into Firm code.
2615 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2617 type_t *type = expression->type;
2619 /* beware: if expression is a variable reference, return the
2620 alignment of the variable. */
2621 const expression_t *tp_expression = expression->tp_expression;
2622 const declaration_t *declaration = expr_is_variable(tp_expression);
2623 if (declaration != NULL) {
2624 /* TODO: get the alignment of this variable. */
2626 type = tp_expression->base.type;
2627 assert(type != NULL);
2630 ir_mode *const mode = get_ir_mode(expression->base.type);
2631 symconst_symbol sym;
2632 sym.type_p = get_ir_type(type);
2633 return new_SymConst(mode, sym, symconst_type_align);
2636 static void init_ir_types(void);
2638 long fold_constant(const expression_t *expression)
2640 assert(is_type_valid(skip_typeref(expression->base.type)));
2642 bool constant_folding_old = constant_folding;
2643 constant_folding = true;
2647 assert(is_constant_expression(expression));
2649 ir_graph *old_current_ir_graph = current_ir_graph;
2650 if (current_ir_graph == NULL) {
2651 current_ir_graph = get_const_code_irg();
2654 ir_node *cnst = expression_to_firm(expression);
2655 current_ir_graph = old_current_ir_graph;
2657 if (!is_Const(cnst)) {
2658 panic("couldn't fold constant\n");
2661 tarval *tv = get_Const_tarval(cnst);
2662 if (!tarval_is_long(tv)) {
2663 panic("result of constant folding is not integer\n");
2666 constant_folding = constant_folding_old;
2668 return get_tarval_long(tv);
2671 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2673 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2675 /* first try to fold a constant condition */
2676 if (is_constant_expression(expression->condition)) {
2677 long val = fold_constant(expression->condition);
2679 expression_t *true_expression = expression->true_expression;
2680 if (true_expression == NULL)
2681 true_expression = expression->condition;
2682 return expression_to_firm(true_expression);
2684 return expression_to_firm(expression->false_expression);
2688 ir_node *cur_block = get_cur_block();
2690 /* create the true block */
2691 ir_node *true_block = new_immBlock();
2693 ir_node *true_val = expression->true_expression != NULL ?
2694 expression_to_firm(expression->true_expression) : NULL;
2695 ir_node *true_jmp = new_Jmp();
2697 /* create the false block */
2698 ir_node *false_block = new_immBlock();
2700 ir_node *false_val = expression_to_firm(expression->false_expression);
2701 ir_node *false_jmp = new_Jmp();
2703 /* create the condition evaluation */
2704 set_cur_block(cur_block);
2705 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2706 if (expression->true_expression == NULL) {
2707 if (cond_expr != NULL) {
2708 true_val = cond_expr;
2710 /* Condition ended with a short circuit (&&, ||, !) operation.
2711 * Generate a "1" as value for the true branch. */
2712 ir_mode *const mode = mode_Is;
2713 true_val = new_Const(mode, get_mode_one(mode));
2716 mature_immBlock(true_block);
2717 mature_immBlock(false_block);
2719 /* create the common block */
2720 ir_node *in_cf[2] = { true_jmp, false_jmp };
2721 new_Block(2, in_cf);
2723 /* TODO improve static semantics, so either both or no values are NULL */
2724 if (true_val == NULL || false_val == NULL)
2727 ir_node *in[2] = { true_val, false_val };
2728 ir_mode *mode = get_irn_mode(true_val);
2729 assert(get_irn_mode(false_val) == mode);
2730 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2736 * Returns an IR-node representing the address of a field.
2738 static ir_node *select_addr(const select_expression_t *expression)
2740 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2742 ir_node *compound_addr = expression_to_firm(expression->compound);
2744 /* make sure the type is constructed */
2745 type_t *type = skip_typeref(expression->compound->base.type);
2746 if (is_type_pointer(type)) {
2747 type = type->pointer.points_to;
2749 (void) get_ir_type(type);
2751 declaration_t *entry = expression->compound_entry;
2752 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2753 ir_entity *entity = entry->v.entity;
2755 assert(entity != NULL);
2757 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2762 static ir_node *select_to_firm(const select_expression_t *expression)
2764 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2765 ir_node *addr = select_addr(expression);
2766 type_t *type = revert_automatic_type_conversion(
2767 (const expression_t*) expression);
2768 type = skip_typeref(type);
2770 declaration_t *entry = expression->compound_entry;
2771 type_t *entry_type = skip_typeref(entry->type);
2773 if (entry_type->kind == TYPE_BITFIELD) {
2774 return bitfield_extract_to_firm(expression, addr);
2777 return deref_address(dbgi, type, addr);
2780 /* Values returned by __builtin_classify_type. */
2781 typedef enum gcc_type_class
2787 enumeral_type_class,
2790 reference_type_class,
2794 function_type_class,
2805 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2807 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2813 const atomic_type_t *const atomic_type = &type->atomic;
2814 switch (atomic_type->akind) {
2815 /* should not be reached */
2816 case ATOMIC_TYPE_INVALID:
2820 /* gcc cannot do that */
2821 case ATOMIC_TYPE_VOID:
2822 tc = void_type_class;
2825 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2826 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2827 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2828 case ATOMIC_TYPE_SHORT:
2829 case ATOMIC_TYPE_USHORT:
2830 case ATOMIC_TYPE_INT:
2831 case ATOMIC_TYPE_UINT:
2832 case ATOMIC_TYPE_LONG:
2833 case ATOMIC_TYPE_ULONG:
2834 case ATOMIC_TYPE_LONGLONG:
2835 case ATOMIC_TYPE_ULONGLONG:
2836 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2837 tc = integer_type_class;
2840 case ATOMIC_TYPE_FLOAT:
2841 case ATOMIC_TYPE_DOUBLE:
2842 case ATOMIC_TYPE_LONG_DOUBLE:
2843 tc = real_type_class;
2846 panic("Unexpected atomic type in classify_type_to_firm().");
2849 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2850 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2851 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2852 case TYPE_ARRAY: /* gcc handles this as pointer */
2853 case TYPE_FUNCTION: /* gcc handles this as pointer */
2854 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2855 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2856 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2858 /* gcc handles this as integer */
2859 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2862 /* typedef/typeof should be skipped already */
2869 panic("unexpected TYPE classify_type_to_firm().");
2872 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2873 ir_mode *const mode = mode_int;
2874 tarval *const tv = new_tarval_from_long(tc, mode);
2875 return new_d_Const(dbgi, mode, tv);
2878 static ir_node *function_name_to_firm(
2879 const funcname_expression_t *const expr)
2881 switch(expr->kind) {
2882 case FUNCNAME_FUNCTION:
2883 case FUNCNAME_PRETTY_FUNCTION:
2884 case FUNCNAME_FUNCDNAME:
2885 if (current_function_name == NULL) {
2886 const source_position_t *const src_pos = &expr->base.source_position;
2887 const char *const name = current_function_decl->symbol->string;
2888 const string_t string = { name, strlen(name) + 1 };
2889 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2891 return current_function_name;
2892 case FUNCNAME_FUNCSIG:
2893 if (current_funcsig == NULL) {
2894 const source_position_t *const src_pos = &expr->base.source_position;
2895 ir_entity *ent = get_irg_entity(current_ir_graph);
2896 const char *const name = get_entity_ld_name(ent);
2897 const string_t string = { name, strlen(name) + 1 };
2898 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2900 return current_funcsig;
2902 panic("Unsupported function name");
2905 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2907 statement_t *statement = expr->statement;
2909 assert(statement->kind == STATEMENT_COMPOUND);
2910 return compound_statement_to_firm(&statement->compound);
2913 static ir_node *va_start_expression_to_firm(
2914 const va_start_expression_t *const expr)
2916 ir_type *const method_type = get_ir_type(current_function_decl->type);
2917 int const n = get_method_n_params(method_type) - 1;
2918 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2919 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2920 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2921 ir_node *const no_mem = new_NoMem();
2922 ir_node *const arg_sel =
2923 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2925 ir_node *const cnst = get_type_size(expr->parameter->type);
2926 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2927 set_value_for_expression(expr->ap, add);
2932 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2934 type_t *const type = expr->base.type;
2935 expression_t *const ap_expr = expr->ap;
2936 ir_node *const ap_addr = expression_to_addr(ap_expr);
2937 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2938 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2939 ir_node *const res = deref_address(dbgi, type, ap);
2941 ir_node *const cnst = get_type_size(expr->base.type);
2942 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2944 set_value_for_expression_addr(ap_expr, add, ap_addr);
2949 static ir_node *dereference_addr(const unary_expression_t *const expression)
2951 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2952 return expression_to_firm(expression->value);
2956 * Returns a IR-node representing an lvalue of the given expression.
2958 static ir_node *expression_to_addr(const expression_t *expression)
2960 switch(expression->kind) {
2961 case EXPR_REFERENCE:
2962 return reference_addr(&expression->reference);
2963 case EXPR_ARRAY_ACCESS:
2964 return array_access_addr(&expression->array_access);
2966 return select_addr(&expression->select);
2968 return call_expression_to_firm(&expression->call);
2969 case EXPR_UNARY_DEREFERENCE: {
2970 return dereference_addr(&expression->unary);
2975 panic("trying to get address of non-lvalue");
2978 static ir_node *builtin_constant_to_firm(
2979 const builtin_constant_expression_t *expression)
2981 ir_mode *mode = get_ir_mode(expression->base.type);
2984 if (is_constant_expression(expression->value)) {
2989 return new_Const_long(mode, v);
2992 static ir_node *builtin_prefetch_to_firm(
2993 const builtin_prefetch_expression_t *expression)
2995 ir_node *adr = expression_to_firm(expression->adr);
2996 /* no Firm support for prefetch yet */
3001 static ir_node *get_label_block(declaration_t *label)
3003 assert(label->namespc == NAMESPACE_LABEL || label->namespc == NAMESPACE_LOCAL_LABEL);
3005 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3006 return label->v.block;
3008 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3010 /* beware: might be called from create initializer with current_ir_graph
3011 * set to const_code_irg. */
3012 ir_graph *rem = current_ir_graph;
3013 current_ir_graph = current_function;
3015 ir_node *old_cur_block = get_cur_block();
3016 ir_node *block = new_immBlock();
3017 set_cur_block(old_cur_block);
3019 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3020 label->v.block = block;
3022 ARR_APP1(declaration_t *, all_labels, label);
3024 current_ir_graph = rem;
3029 * Pointer to a label. This is used for the
3030 * GNU address-of-label extension.
3032 static ir_node *label_address_to_firm(
3033 const label_address_expression_t *label)
3035 ir_node *block = get_label_block(label->declaration);
3036 ir_label_t nr = get_Block_label(block);
3039 nr = get_irp_next_label_nr();
3040 set_Block_label(block, nr);
3042 symconst_symbol value;
3044 return new_SymConst(mode_P_code, value, symconst_label);
3048 * creates firm nodes for an expression. The difference between this function
3049 * and expression_to_firm is, that this version might produce mode_b nodes
3050 * instead of mode_Is.
3052 static ir_node *_expression_to_firm(const expression_t *expression)
3055 if (!constant_folding) {
3056 assert(!expression->base.transformed);
3057 ((expression_t*) expression)->base.transformed = true;
3061 switch (expression->kind) {
3062 case EXPR_CHARACTER_CONSTANT:
3063 return character_constant_to_firm(&expression->conste);
3064 case EXPR_WIDE_CHARACTER_CONSTANT:
3065 return wide_character_constant_to_firm(&expression->conste);
3067 return const_to_firm(&expression->conste);
3068 case EXPR_STRING_LITERAL:
3069 return string_literal_to_firm(&expression->string);
3070 case EXPR_WIDE_STRING_LITERAL:
3071 return wide_string_literal_to_firm(&expression->wide_string);
3072 case EXPR_REFERENCE:
3073 return reference_expression_to_firm(&expression->reference);
3075 return call_expression_to_firm(&expression->call);
3077 return unary_expression_to_firm(&expression->unary);
3079 return binary_expression_to_firm(&expression->binary);
3080 case EXPR_ARRAY_ACCESS:
3081 return array_access_to_firm(&expression->array_access);
3083 return sizeof_to_firm(&expression->typeprop);
3085 return alignof_to_firm(&expression->typeprop);
3086 case EXPR_CONDITIONAL:
3087 return conditional_to_firm(&expression->conditional);
3089 return select_to_firm(&expression->select);
3090 case EXPR_CLASSIFY_TYPE:
3091 return classify_type_to_firm(&expression->classify_type);
3093 return function_name_to_firm(&expression->funcname);
3094 case EXPR_STATEMENT:
3095 return statement_expression_to_firm(&expression->statement);
3097 return va_start_expression_to_firm(&expression->va_starte);
3099 return va_arg_expression_to_firm(&expression->va_arge);
3100 case EXPR_BUILTIN_SYMBOL:
3101 panic("unimplemented expression found");
3102 case EXPR_BUILTIN_CONSTANT_P:
3103 return builtin_constant_to_firm(&expression->builtin_constant);
3104 case EXPR_BUILTIN_PREFETCH:
3105 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3107 return offsetof_to_firm(&expression->offsetofe);
3108 case EXPR_COMPOUND_LITERAL:
3109 return compound_literal_to_firm(&expression->compound_literal);
3110 case EXPR_LABEL_ADDRESS:
3111 return label_address_to_firm(&expression->label_address);
3117 panic("invalid expression found");
3120 static bool produces_mode_b(const expression_t *expression)
3122 switch (expression->kind) {
3123 case EXPR_BINARY_EQUAL:
3124 case EXPR_BINARY_NOTEQUAL:
3125 case EXPR_BINARY_LESS:
3126 case EXPR_BINARY_LESSEQUAL:
3127 case EXPR_BINARY_GREATER:
3128 case EXPR_BINARY_GREATEREQUAL:
3129 case EXPR_BINARY_ISGREATER:
3130 case EXPR_BINARY_ISGREATEREQUAL:
3131 case EXPR_BINARY_ISLESS:
3132 case EXPR_BINARY_ISLESSEQUAL:
3133 case EXPR_BINARY_ISLESSGREATER:
3134 case EXPR_BINARY_ISUNORDERED:
3135 case EXPR_UNARY_NOT:
3138 case EXPR_BINARY_BUILTIN_EXPECT:
3139 return produces_mode_b(expression->binary.left);
3140 case EXPR_BINARY_COMMA:
3141 return produces_mode_b(expression->binary.right);
3148 static ir_node *expression_to_firm(const expression_t *expression)
3150 if (!produces_mode_b(expression)) {
3151 ir_node *res = _expression_to_firm(expression);
3152 assert(res == NULL || get_irn_mode(res) != mode_b);
3156 if (is_constant_expression(expression)) {
3157 ir_node *res = _expression_to_firm(expression);
3158 ir_mode *mode = get_ir_mode(expression->base.type);
3159 assert(is_Const(res));
3160 if (is_Const_null(res)) {
3161 return new_Const_long(mode, 0);
3163 return new_Const_long(mode, 1);
3167 /* we have to produce a 0/1 from the mode_b expression */
3168 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3169 return produce_condition_result(expression, dbgi);
3173 * create a short-circuit expression evaluation that tries to construct
3174 * efficient control flow structures for &&, || and ! expressions
3176 static ir_node *create_condition_evaluation(const expression_t *expression,
3177 ir_node *true_block,
3178 ir_node *false_block)
3180 switch(expression->kind) {
3181 case EXPR_UNARY_NOT: {
3182 const unary_expression_t *unary_expression = &expression->unary;
3183 create_condition_evaluation(unary_expression->value, false_block,
3187 case EXPR_BINARY_LOGICAL_AND: {
3188 const binary_expression_t *binary_expression = &expression->binary;
3190 ir_node *cur_block = get_cur_block();
3191 ir_node *extra_block = new_immBlock();
3192 set_cur_block(cur_block);
3193 create_condition_evaluation(binary_expression->left, extra_block,
3195 mature_immBlock(extra_block);
3196 set_cur_block(extra_block);
3197 create_condition_evaluation(binary_expression->right, true_block,
3201 case EXPR_BINARY_LOGICAL_OR: {
3202 const binary_expression_t *binary_expression = &expression->binary;
3204 ir_node *cur_block = get_cur_block();
3205 ir_node *extra_block = new_immBlock();
3206 set_cur_block(cur_block);
3207 create_condition_evaluation(binary_expression->left, true_block,
3209 mature_immBlock(extra_block);
3210 set_cur_block(extra_block);
3211 create_condition_evaluation(binary_expression->right, true_block,
3219 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3220 ir_node *cond_expr = _expression_to_firm(expression);
3221 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3222 ir_node *cond = new_d_Cond(dbgi, condition);
3223 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3224 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3226 /* set branch prediction info based on __builtin_expect */
3227 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3228 long cnst = fold_constant(expression->binary.right);
3229 cond_jmp_predicate pred;
3232 pred = COND_JMP_PRED_FALSE;
3234 pred = COND_JMP_PRED_TRUE;
3236 set_Cond_jmp_pred(cond, pred);
3239 add_immBlock_pred(true_block, true_proj);
3240 if (false_block != NULL) {
3241 add_immBlock_pred(false_block, false_proj);
3244 set_cur_block(NULL);
3250 static void create_declaration_entity(declaration_t *declaration,
3251 declaration_kind_t declaration_kind,
3252 ir_type *parent_type)
3254 type_t *const type = skip_typeref(declaration->type);
3255 if (is_type_function(type)) {
3256 (void) get_function_entity(declaration);
3260 ident *const id = new_id_from_str(declaration->symbol->string);
3261 ir_type *const irtype = get_ir_type(type);
3262 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3263 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3265 handle_gnu_attributes_ent(entity, declaration);
3267 declaration->declaration_kind = (unsigned char) declaration_kind;
3268 declaration->v.entity = entity;
3269 set_entity_variability(entity, variability_uninitialized);
3270 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3271 if (parent_type == get_tls_type())
3272 set_entity_allocation(entity, allocation_automatic);
3273 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3274 set_entity_allocation(entity, allocation_static);
3276 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3277 set_entity_volatility(entity, volatility_is_volatile);
3282 typedef struct type_path_entry_t type_path_entry_t;
3283 struct type_path_entry_t {
3285 ir_initializer_t *initializer;
3287 declaration_t *compound_entry;
3290 typedef struct type_path_t type_path_t;
3291 struct type_path_t {
3292 type_path_entry_t *path;
3297 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3299 size_t len = ARR_LEN(path->path);
3301 for(size_t i = 0; i < len; ++i) {
3302 const type_path_entry_t *entry = & path->path[i];
3304 type_t *type = skip_typeref(entry->type);
3305 if (is_type_compound(type)) {
3306 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3307 } else if (is_type_array(type)) {
3308 fprintf(stderr, "[%zu]", entry->index);
3310 fprintf(stderr, "-INVALID-");
3313 fprintf(stderr, " (");
3314 print_type(path->top_type);
3315 fprintf(stderr, ")");
3318 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3320 size_t len = ARR_LEN(path->path);
3322 return & path->path[len-1];
3325 static type_path_entry_t *append_to_type_path(type_path_t *path)
3327 size_t len = ARR_LEN(path->path);
3328 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3330 type_path_entry_t *result = & path->path[len];
3331 memset(result, 0, sizeof(result[0]));
3335 static size_t get_compound_size(const compound_type_t *type)
3337 declaration_t *declaration = type->declaration;
3338 declaration_t *member = declaration->scope.declarations;
3340 for( ; member != NULL; member = member->next) {
3343 /* TODO: cache results? */
3348 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3350 type_t *orig_top_type = path->top_type;
3351 type_t *top_type = skip_typeref(orig_top_type);
3353 assert(is_type_compound(top_type) || is_type_array(top_type));
3355 if (ARR_LEN(path->path) == 0) {
3358 type_path_entry_t *top = get_type_path_top(path);
3359 ir_initializer_t *initializer = top->initializer;
3360 return get_initializer_compound_value(initializer, top->index);
3364 static void descend_into_subtype(type_path_t *path)
3366 type_t *orig_top_type = path->top_type;
3367 type_t *top_type = skip_typeref(orig_top_type);
3369 assert(is_type_compound(top_type) || is_type_array(top_type));
3371 ir_initializer_t *initializer = get_initializer_entry(path);
3373 type_path_entry_t *top = append_to_type_path(path);
3374 top->type = top_type;
3378 if (is_type_compound(top_type)) {
3379 declaration_t *declaration = top_type->compound.declaration;
3380 declaration_t *entry = declaration->scope.declarations;
3382 top->compound_entry = entry;
3384 len = get_compound_size(&top_type->compound);
3386 path->top_type = entry->type;
3388 assert(is_type_array(top_type));
3389 assert(top_type->array.size > 0);
3392 path->top_type = top_type->array.element_type;
3393 len = top_type->array.size;
3395 if (initializer == NULL
3396 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3397 initializer = create_initializer_compound(len);
3398 /* we have to set the entry at the 2nd latest path entry... */
3399 size_t path_len = ARR_LEN(path->path);
3400 assert(path_len >= 1);
3402 type_path_entry_t *entry = & path->path[path_len-2];
3403 ir_initializer_t *tinitializer = entry->initializer;
3404 set_initializer_compound_value(tinitializer, entry->index,
3408 top->initializer = initializer;
3411 static void ascend_from_subtype(type_path_t *path)
3413 type_path_entry_t *top = get_type_path_top(path);
3415 path->top_type = top->type;
3417 size_t len = ARR_LEN(path->path);
3418 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3421 static void walk_designator(type_path_t *path, const designator_t *designator)
3423 /* designators start at current object type */
3424 ARR_RESIZE(type_path_entry_t, path->path, 1);
3426 for( ; designator != NULL; designator = designator->next) {
3427 type_path_entry_t *top = get_type_path_top(path);
3428 type_t *orig_type = top->type;
3429 type_t *type = skip_typeref(orig_type);
3431 if (designator->symbol != NULL) {
3432 assert(is_type_compound(type));
3434 symbol_t *symbol = designator->symbol;
3436 declaration_t *declaration = type->compound.declaration;
3437 declaration_t *iter = declaration->scope.declarations;
3438 for( ; iter != NULL; iter = iter->next, ++index) {
3439 if (iter->symbol == symbol) {
3443 assert(iter != NULL);
3445 top->type = orig_type;
3446 top->compound_entry = iter;
3448 orig_type = iter->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 declaration_t *entry = top->compound_entry;
3494 entry = entry->next;
3495 top->compound_entry = entry;
3496 if (entry != NULL) {
3497 path->top_type = entry->type;
3501 assert(is_type_array(type));
3504 if (!type->array.size_constant || top->index < type->array.size) {
3509 /* we're past the last member of the current sub-aggregate, try if we
3510 * can ascend in the type hierarchy and continue with another subobject */
3511 size_t len = ARR_LEN(path->path);
3514 ascend_from_subtype(path);
3515 advance_current_object(path);
3517 path->invalid = true;
3522 static ir_initializer_t *create_ir_initializer(
3523 const initializer_t *initializer, type_t *type);
3525 static ir_initializer_t *create_ir_initializer_value(
3526 const initializer_value_t *initializer)
3528 if (is_type_compound(initializer->value->base.type)) {
3529 panic("initializer creation for compounds not implemented yet");
3531 ir_node *value = expression_to_firm(initializer->value);
3532 return create_initializer_const(value);
3535 static ir_initializer_t *create_ir_initializer_list(
3536 const initializer_list_t *initializer, type_t *type)
3539 memset(&path, 0, sizeof(path));
3540 path.top_type = type;
3541 path.path = NEW_ARR_F(type_path_entry_t, 0);
3543 descend_into_subtype(&path);
3545 for(size_t i = 0; i < initializer->len; ++i) {
3546 const initializer_t *sub_initializer = initializer->initializers[i];
3548 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3549 walk_designator(&path, sub_initializer->designator.designator);
3553 if (sub_initializer->kind == INITIALIZER_VALUE) {
3554 /* we might have to descend into types until we're at a scalar
3557 type_t *orig_top_type = path.top_type;
3558 type_t *top_type = skip_typeref(orig_top_type);
3560 if (is_type_scalar(top_type))
3562 descend_into_subtype(&path);
3566 ir_initializer_t *sub_irinitializer
3567 = create_ir_initializer(sub_initializer, path.top_type);
3569 size_t path_len = ARR_LEN(path.path);
3570 assert(path_len >= 1);
3571 type_path_entry_t *entry = & path.path[path_len-1];
3572 ir_initializer_t *tinitializer = entry->initializer;
3573 set_initializer_compound_value(tinitializer, entry->index,
3576 advance_current_object(&path);
3579 assert(ARR_LEN(path.path) >= 1);
3580 ir_initializer_t *result = path.path[0].initializer;
3581 DEL_ARR_F(path.path);
3586 static ir_initializer_t *create_ir_initializer_string(
3587 const initializer_string_t *initializer, type_t *type)
3589 type = skip_typeref(type);
3591 size_t string_len = initializer->string.size;
3592 assert(type->kind == TYPE_ARRAY);
3593 assert(type->array.size_constant);
3594 size_t len = type->array.size;
3595 ir_initializer_t *irinitializer = create_initializer_compound(len);
3597 const char *string = initializer->string.begin;
3598 ir_mode *mode = get_ir_mode(type->array.element_type);
3600 for(size_t i = 0; i < len; ++i) {
3605 tarval *tv = new_tarval_from_long(c, mode);
3606 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3608 set_initializer_compound_value(irinitializer, i, char_initializer);
3611 return irinitializer;
3614 static ir_initializer_t *create_ir_initializer_wide_string(
3615 const initializer_wide_string_t *initializer, type_t *type)
3617 size_t string_len = initializer->string.size;
3618 assert(type->kind == TYPE_ARRAY);
3619 assert(type->array.size_constant);
3620 size_t len = type->array.size;
3621 ir_initializer_t *irinitializer = create_initializer_compound(len);
3623 const wchar_rep_t *string = initializer->string.begin;
3624 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3626 for(size_t i = 0; i < len; ++i) {
3628 if (i < string_len) {
3631 tarval *tv = new_tarval_from_long(c, mode);
3632 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3634 set_initializer_compound_value(irinitializer, i, char_initializer);
3637 return irinitializer;
3640 static ir_initializer_t *create_ir_initializer(
3641 const initializer_t *initializer, type_t *type)
3643 switch(initializer->kind) {
3644 case INITIALIZER_STRING:
3645 return create_ir_initializer_string(&initializer->string, type);
3647 case INITIALIZER_WIDE_STRING:
3648 return create_ir_initializer_wide_string(&initializer->wide_string,
3651 case INITIALIZER_LIST:
3652 return create_ir_initializer_list(&initializer->list, type);
3654 case INITIALIZER_VALUE:
3655 return create_ir_initializer_value(&initializer->value);
3657 case INITIALIZER_DESIGNATOR:
3658 panic("unexpected designator initializer found");
3660 panic("unknown initializer");
3663 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3666 if (is_atomic_type(type)) {
3667 ir_mode *mode = get_type_mode(type);
3668 tarval *zero = get_mode_null(mode);
3669 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3671 /* TODO: bitfields */
3672 ir_node *mem = get_store();
3673 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3674 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3677 assert(is_compound_type(type));
3680 if (is_Array_type(type)) {
3681 assert(has_array_upper_bound(type, 0));
3682 n_members = get_array_upper_bound_int(type, 0);
3684 n_members = get_compound_n_members(type);
3687 for(int i = 0; i < n_members; ++i) {
3690 if (is_Array_type(type)) {
3691 ir_entity *entity = get_array_element_entity(type);
3692 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3693 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3694 ir_node *in[1] = { cnst };
3695 irtype = get_array_element_type(type);
3696 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3698 ir_entity *member = get_compound_member(type, i);
3700 irtype = get_entity_type(member);
3701 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3704 create_dynamic_null_initializer(irtype, dbgi, addr);
3709 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3710 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3712 switch(get_initializer_kind(initializer)) {
3713 case IR_INITIALIZER_NULL: {
3714 create_dynamic_null_initializer(type, dbgi, base_addr);
3717 case IR_INITIALIZER_CONST: {
3718 ir_node *node = get_initializer_const_value(initializer);
3719 ir_mode *mode = get_irn_mode(node);
3720 ir_type *ent_type = get_entity_type(entity);
3722 /* is it a bitfield type? */
3723 if (is_Primitive_type(ent_type) &&
3724 get_primitive_base_type(ent_type) != NULL) {
3725 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3729 assert(get_type_mode(type) == mode);
3730 ir_node *mem = get_store();
3731 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3732 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3736 case IR_INITIALIZER_TARVAL: {
3737 tarval *tv = get_initializer_tarval_value(initializer);
3738 ir_mode *mode = get_tarval_mode(tv);
3739 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3740 ir_type *ent_type = get_entity_type(entity);
3742 /* is it a bitfield type? */
3743 if (is_Primitive_type(ent_type) &&
3744 get_primitive_base_type(ent_type) != NULL) {
3745 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3749 assert(get_type_mode(type) == mode);
3750 ir_node *mem = get_store();
3751 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3752 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3756 case IR_INITIALIZER_COMPOUND: {
3757 assert(is_compound_type(type));
3759 if (is_Array_type(type)) {
3760 assert(has_array_upper_bound(type, 0));
3761 n_members = get_array_upper_bound_int(type, 0);
3763 n_members = get_compound_n_members(type);
3766 if (get_initializer_compound_n_entries(initializer)
3767 != (unsigned) n_members)
3768 panic("initializer doesn't match compound type");
3770 for(int i = 0; i < n_members; ++i) {
3773 ir_entity *sub_entity;
3774 if (is_Array_type(type)) {
3775 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3776 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3777 ir_node *in[1] = { cnst };
3778 irtype = get_array_element_type(type);
3779 sub_entity = get_array_element_entity(type);
3780 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3783 sub_entity = get_compound_member(type, i);
3784 irtype = get_entity_type(sub_entity);
3785 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3789 ir_initializer_t *sub_init
3790 = get_initializer_compound_value(initializer, i);
3792 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3799 panic("invalid IR_INITIALIZER found");
3802 static void create_dynamic_initializer(ir_initializer_t *initializer,
3803 dbg_info *dbgi, ir_entity *entity)
3805 ir_node *frame = get_local_frame(entity);
3806 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3807 ir_type *type = get_entity_type(entity);
3809 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3812 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3813 ir_entity *entity, type_t *type)
3815 ir_node *memory = get_store();
3816 ir_node *nomem = new_NoMem();
3817 ir_node *frame = get_irg_frame(current_ir_graph);
3818 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3820 if (initializer->kind == INITIALIZER_VALUE) {
3821 initializer_value_t *initializer_value = &initializer->value;
3823 ir_node *value = expression_to_firm(initializer_value->value);
3824 type = skip_typeref(type);
3825 assign_value(dbgi, addr, type, value);
3829 if (!is_constant_initializer(initializer)) {
3830 ir_initializer_t *irinitializer
3831 = create_ir_initializer(initializer, type);
3833 create_dynamic_initializer(irinitializer, dbgi, entity);
3837 /* create the ir_initializer */
3838 ir_graph *const old_current_ir_graph = current_ir_graph;
3839 current_ir_graph = get_const_code_irg();
3841 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3843 assert(current_ir_graph == get_const_code_irg());
3844 current_ir_graph = old_current_ir_graph;
3846 /* create a "template" entity which is copied to the entity on the stack */
3847 ident *const id = id_unique("initializer.%u");
3848 ir_type *const irtype = get_ir_type(type);
3849 ir_type *const global_type = get_glob_type();
3850 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3851 set_entity_ld_ident(init_entity, id);
3853 set_entity_variability(init_entity, variability_initialized);
3854 set_entity_visibility(init_entity, visibility_local);
3855 set_entity_allocation(init_entity, allocation_static);
3857 set_entity_initializer(init_entity, irinitializer);
3859 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3860 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3862 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3863 set_store(copyb_mem);
3866 static void create_initializer_local_variable_entity(declaration_t *declaration)
3868 initializer_t *initializer = declaration->init.initializer;
3869 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3870 ir_entity *entity = declaration->v.entity;
3871 type_t *type = declaration->type;
3872 create_local_initializer(initializer, dbgi, entity, type);
3875 static void create_declaration_initializer(declaration_t *declaration)
3877 initializer_t *initializer = declaration->init.initializer;
3878 if (initializer == NULL)
3881 declaration_kind_t declaration_kind
3882 = (declaration_kind_t) declaration->declaration_kind;
3883 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3884 create_initializer_local_variable_entity(declaration);
3888 type_t *type = declaration->type;
3889 type_qualifiers_t tq = get_type_qualifier(type, true);
3891 if (initializer->kind == INITIALIZER_VALUE) {
3892 initializer_value_t *initializer_value = &initializer->value;
3894 = get_dbg_info(&declaration->source_position);
3896 ir_node *value = expression_to_firm(initializer_value->value);
3897 value = do_strict_conv(dbgi, value);
3899 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3900 set_value(declaration->v.value_number, value);
3902 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3904 ir_entity *entity = declaration->v.entity;
3906 if (tq & TYPE_QUALIFIER_CONST) {
3907 set_entity_variability(entity, variability_constant);
3909 set_entity_variability(entity, variability_initialized);
3911 set_atomic_ent_value(entity, value);
3914 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3915 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3917 ir_entity *entity = declaration->v.entity;
3918 ir_initializer_t *irinitializer
3919 = create_ir_initializer(initializer, type);
3921 if (tq & TYPE_QUALIFIER_CONST) {
3922 set_entity_variability(entity, variability_constant);
3924 set_entity_variability(entity, variability_initialized);
3926 set_entity_initializer(entity, irinitializer);
3930 static void create_variable_length_array(declaration_t *declaration)
3932 /* initializers are not allowed for VLAs */
3933 assert(declaration->init.initializer == NULL);
3935 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3936 declaration->v.vla_base = NULL;
3938 /* TODO: record VLA somewhere so we create the free node when we leave
3942 static void allocate_variable_length_array(declaration_t *declaration)
3944 /* initializers are not allowed for VLAs */
3945 assert(declaration->init.initializer == NULL);
3946 assert(get_cur_block() != NULL);
3948 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3949 type_t *type = declaration->type;
3950 ir_type *el_type = get_ir_type(type->array.element_type);
3952 /* make sure size_node is calculated */
3953 get_type_size(type);
3954 ir_node *elems = type->array.size_node;
3955 ir_node *mem = get_store();
3956 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3958 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3959 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3962 assert(declaration->declaration_kind
3963 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3964 declaration->v.vla_base = addr;
3968 * Creates a Firm local variable from a declaration.
3970 static void create_local_variable(declaration_t *declaration)
3972 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3974 bool needs_entity = declaration->address_taken;
3975 type_t *type = skip_typeref(declaration->type);
3977 /* is it a variable length array? */
3978 if (is_type_array(type) && !type->array.size_constant) {
3979 create_variable_length_array(declaration);
3981 } else if (is_type_array(type) || is_type_compound(type)) {
3982 needs_entity = true;
3983 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3984 needs_entity = true;
3988 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3989 create_declaration_entity(declaration,
3990 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3993 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3994 declaration->v.value_number = next_value_number_function;
3995 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3996 ++next_value_number_function;
4000 static void create_local_static_variable(declaration_t *declaration)
4002 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
4004 type_t *const type = skip_typeref(declaration->type);
4005 ir_type *const global_type = get_glob_type();
4006 ir_type *const irtype = get_ir_type(type);
4007 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
4009 size_t l = strlen(declaration->symbol->string);
4010 char buf[l + sizeof(".%u")];
4011 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
4012 ident *const id = id_unique(buf);
4014 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
4016 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4017 set_entity_volatility(entity, volatility_is_volatile);
4020 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4021 declaration->v.entity = entity;
4022 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
4023 set_entity_variability(entity, variability_uninitialized);
4024 set_entity_visibility(entity, visibility_local);
4025 set_entity_allocation(entity, allocation_static);
4027 ir_graph *const old_current_ir_graph = current_ir_graph;
4028 current_ir_graph = get_const_code_irg();
4030 create_declaration_initializer(declaration);
4032 assert(current_ir_graph == get_const_code_irg());
4033 current_ir_graph = old_current_ir_graph;
4038 static void return_statement_to_firm(return_statement_t *statement)
4040 if (get_cur_block() == NULL)
4043 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4044 ir_type *func_irtype = get_ir_type(current_function_decl->type);
4049 if (get_method_n_ress(func_irtype) > 0) {
4050 ir_type *res_type = get_method_res_type(func_irtype, 0);
4052 if (statement->value != NULL) {
4053 ir_node *node = expression_to_firm(statement->value);
4054 node = do_strict_conv(dbgi, node);
4058 if (is_compound_type(res_type)) {
4061 mode = get_type_mode(res_type);
4063 in[0] = new_Unknown(mode);
4067 /* build return_value for its side effects */
4068 if (statement->value != NULL) {
4069 expression_to_firm(statement->value);
4074 ir_node *store = get_store();
4075 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4077 ir_node *end_block = get_irg_end_block(current_ir_graph);
4078 add_immBlock_pred(end_block, ret);
4080 set_cur_block(NULL);
4083 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4085 if (get_cur_block() == NULL)
4088 return expression_to_firm(statement->expression);
4091 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4093 declaration_t *declaration = compound->scope.declarations;
4094 for( ; declaration != NULL; declaration = declaration->next) {
4095 create_local_declaration(declaration);
4098 ir_node *result = NULL;
4099 statement_t *statement = compound->statements;
4100 for( ; statement != NULL; statement = statement->base.next) {
4101 if (statement->base.next == NULL
4102 && statement->kind == STATEMENT_EXPRESSION) {
4103 result = expression_statement_to_firm(
4104 &statement->expression);
4107 statement_to_firm(statement);
4113 static void create_global_variable(declaration_t *declaration)
4117 switch ((storage_class_tag_t)declaration->storage_class) {
4118 case STORAGE_CLASS_STATIC:
4119 vis = visibility_local;
4122 case STORAGE_CLASS_EXTERN:
4123 vis = visibility_external_allocated;
4126 case STORAGE_CLASS_NONE:
4127 vis = visibility_external_visible;
4130 case STORAGE_CLASS_THREAD:
4131 vis = visibility_external_visible;
4134 case STORAGE_CLASS_THREAD_EXTERN:
4135 vis = visibility_external_allocated;
4138 case STORAGE_CLASS_THREAD_STATIC:
4139 vis = visibility_local;
4143 var_type = get_tls_type();
4147 var_type = get_glob_type();
4151 create_declaration_entity(declaration,
4152 DECLARATION_KIND_GLOBAL_VARIABLE,
4154 if (!is_type_function(skip_typeref(declaration->type))) {
4155 set_entity_visibility(declaration->v.entity, vis);
4160 case STORAGE_CLASS_TYPEDEF:
4161 case STORAGE_CLASS_AUTO:
4162 case STORAGE_CLASS_REGISTER:
4163 case STORAGE_CLASS_ENUM_ENTRY:
4166 panic("Invalid storage class for global variable");
4169 static void create_local_declaration(declaration_t *declaration)
4171 if (declaration->namespc != NAMESPACE_NORMAL)
4173 /* construct type */
4174 (void) get_ir_type(declaration->type);
4175 if (declaration->symbol == NULL) {
4179 type_t *type = skip_typeref(declaration->type);
4181 switch ((storage_class_tag_t) declaration->storage_class) {
4182 case STORAGE_CLASS_STATIC:
4183 create_local_static_variable(declaration);
4185 case STORAGE_CLASS_EXTERN:
4186 create_global_variable(declaration);
4187 create_declaration_initializer(declaration);
4189 case STORAGE_CLASS_NONE:
4190 case STORAGE_CLASS_AUTO:
4191 case STORAGE_CLASS_REGISTER:
4192 if (is_type_function(type)) {
4193 if (declaration->init.statement != NULL) {
4194 get_function_entity(declaration);
4195 declaration->declaration_kind = DECLARATION_KIND_INNER_FUNCTION;
4196 enqueue_inner_function(declaration);
4198 get_function_entity(declaration);
4201 create_local_variable(declaration);
4204 case STORAGE_CLASS_ENUM_ENTRY:
4205 /* should already be handled */
4206 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4208 case STORAGE_CLASS_TYPEDEF:
4209 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4211 case STORAGE_CLASS_THREAD:
4212 case STORAGE_CLASS_THREAD_EXTERN:
4213 case STORAGE_CLASS_THREAD_STATIC:
4216 panic("invalid storage class found");
4219 static void initialize_local_declaration(declaration_t *declaration)
4221 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4224 switch ((declaration_kind_t) declaration->declaration_kind) {
4225 case DECLARATION_KIND_LOCAL_VARIABLE:
4226 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4227 create_declaration_initializer(declaration);
4230 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4231 allocate_variable_length_array(declaration);
4234 case DECLARATION_KIND_LABEL_BLOCK:
4235 case DECLARATION_KIND_COMPOUND_MEMBER:
4236 case DECLARATION_KIND_GLOBAL_VARIABLE:
4237 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4238 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4239 case DECLARATION_KIND_FUNCTION:
4240 case DECLARATION_KIND_TYPE:
4241 case DECLARATION_KIND_ENUM_ENTRY:
4242 case DECLARATION_KIND_INNER_FUNCTION:
4245 case DECLARATION_KIND_UNKNOWN:
4246 panic("can't initialize unknown declaration");
4248 panic("invalid declaration kind");
4251 static void declaration_statement_to_firm(declaration_statement_t *statement)
4253 declaration_t *declaration = statement->declarations_begin;
4254 declaration_t *end = statement->declarations_end->next;
4255 for( ; declaration != end; declaration = declaration->next) {
4256 if (declaration->namespc != NAMESPACE_NORMAL)
4258 initialize_local_declaration(declaration);
4262 static void if_statement_to_firm(if_statement_t *statement)
4264 ir_node *cur_block = get_cur_block();
4266 ir_node *fallthrough_block = NULL;
4268 /* the true (blocks) */
4269 ir_node *true_block = NULL;
4270 if (statement->true_statement != NULL) {
4271 true_block = new_immBlock();
4272 statement_to_firm(statement->true_statement);
4273 if (get_cur_block() != NULL) {
4274 ir_node *jmp = new_Jmp();
4275 if (fallthrough_block == NULL)
4276 fallthrough_block = new_immBlock();
4277 add_immBlock_pred(fallthrough_block, jmp);
4281 /* the false (blocks) */
4282 ir_node *false_block = NULL;
4283 if (statement->false_statement != NULL) {
4284 false_block = new_immBlock();
4286 statement_to_firm(statement->false_statement);
4287 if (get_cur_block() != NULL) {
4288 ir_node *jmp = new_Jmp();
4289 if (fallthrough_block == NULL)
4290 fallthrough_block = new_immBlock();
4291 add_immBlock_pred(fallthrough_block, jmp);
4295 /* create the condition */
4296 if (cur_block != NULL) {
4297 if (true_block == NULL || false_block == NULL) {
4298 if (fallthrough_block == NULL)
4299 fallthrough_block = new_immBlock();
4300 if (true_block == NULL)
4301 true_block = fallthrough_block;
4302 if (false_block == NULL)
4303 false_block = fallthrough_block;
4306 set_cur_block(cur_block);
4307 create_condition_evaluation(statement->condition, true_block,
4311 mature_immBlock(true_block);
4312 if (false_block != fallthrough_block && false_block != NULL) {
4313 mature_immBlock(false_block);
4315 if (fallthrough_block != NULL) {
4316 mature_immBlock(fallthrough_block);
4319 set_cur_block(fallthrough_block);
4322 static void while_statement_to_firm(while_statement_t *statement)
4324 ir_node *jmp = NULL;
4325 if (get_cur_block() != NULL) {
4329 /* create the header block */
4330 ir_node *header_block = new_immBlock();
4332 add_immBlock_pred(header_block, jmp);
4336 ir_node *old_continue_label = continue_label;
4337 ir_node *old_break_label = break_label;
4338 continue_label = header_block;
4341 ir_node *body_block = new_immBlock();
4342 statement_to_firm(statement->body);
4343 ir_node *false_block = break_label;
4345 assert(continue_label == header_block);
4346 continue_label = old_continue_label;
4347 break_label = old_break_label;
4349 if (get_cur_block() != NULL) {
4351 add_immBlock_pred(header_block, jmp);
4354 /* shortcut for while(true) */
4355 if (is_constant_expression(statement->condition)
4356 && fold_constant(statement->condition) != 0) {
4357 set_cur_block(header_block);
4358 ir_node *header_jmp = new_Jmp();
4359 add_immBlock_pred(body_block, header_jmp);
4361 keep_alive(body_block);
4362 keep_all_memory(body_block);
4363 set_cur_block(body_block);
4365 if (false_block == NULL) {
4366 false_block = new_immBlock();
4369 /* create the condition */
4370 set_cur_block(header_block);
4372 create_condition_evaluation(statement->condition, body_block,
4376 mature_immBlock(body_block);
4377 mature_immBlock(header_block);
4378 if (false_block != NULL) {
4379 mature_immBlock(false_block);
4382 set_cur_block(false_block);
4385 static void do_while_statement_to_firm(do_while_statement_t *statement)
4387 ir_node *jmp = NULL;
4388 if (get_cur_block() != NULL) {
4392 /* create the header block */
4393 ir_node *header_block = new_immBlock();
4396 ir_node *body_block = new_immBlock();
4398 add_immBlock_pred(body_block, jmp);
4401 ir_node *old_continue_label = continue_label;
4402 ir_node *old_break_label = break_label;
4403 continue_label = header_block;
4406 statement_to_firm(statement->body);
4407 ir_node *false_block = break_label;
4409 assert(continue_label == header_block);
4410 continue_label = old_continue_label;
4411 break_label = old_break_label;
4413 if (get_cur_block() != NULL) {
4414 ir_node *body_jmp = new_Jmp();
4415 add_immBlock_pred(header_block, body_jmp);
4416 mature_immBlock(header_block);
4419 if (false_block == NULL) {
4420 false_block = new_immBlock();
4423 /* create the condition */
4424 set_cur_block(header_block);
4426 create_condition_evaluation(statement->condition, body_block, false_block);
4427 mature_immBlock(body_block);
4428 mature_immBlock(header_block);
4429 if (false_block != NULL) {
4430 mature_immBlock(false_block);
4433 set_cur_block(false_block);
4436 static void for_statement_to_firm(for_statement_t *statement)
4438 ir_node *jmp = NULL;
4440 /* create declarations */
4441 declaration_t *declaration = statement->scope.declarations;
4442 for( ; declaration != NULL; declaration = declaration->next) {
4443 create_local_declaration(declaration);
4446 if (get_cur_block() != NULL) {
4447 declaration = statement->scope.declarations;
4448 for( ; declaration != NULL; declaration = declaration->next) {
4449 initialize_local_declaration(declaration);
4452 if (statement->initialisation != NULL) {
4453 expression_to_firm(statement->initialisation);
4460 /* create the step block */
4461 ir_node *const step_block = new_immBlock();
4462 if (statement->step != NULL) {
4463 expression_to_firm(statement->step);
4465 ir_node *const step_jmp = new_Jmp();
4467 /* create the header block */
4468 ir_node *const header_block = new_immBlock();
4470 add_immBlock_pred(header_block, jmp);
4472 add_immBlock_pred(header_block, step_jmp);
4474 /* the false block */
4475 ir_node *const false_block = new_immBlock();
4478 ir_node * body_block;
4479 if (statement->body != NULL) {
4480 ir_node *const old_continue_label = continue_label;
4481 ir_node *const old_break_label = break_label;
4482 continue_label = step_block;
4483 break_label = false_block;
4485 body_block = new_immBlock();
4486 statement_to_firm(statement->body);
4488 assert(continue_label == step_block);
4489 assert(break_label == false_block);
4490 continue_label = old_continue_label;
4491 break_label = old_break_label;
4493 if (get_cur_block() != NULL) {
4495 add_immBlock_pred(step_block, jmp);
4498 body_block = step_block;
4501 /* create the condition */
4502 set_cur_block(header_block);
4503 if (statement->condition != NULL) {
4504 create_condition_evaluation(statement->condition, body_block,
4507 keep_alive(header_block);
4508 keep_all_memory(header_block);
4510 add_immBlock_pred(body_block, jmp);
4513 mature_immBlock(body_block);
4514 mature_immBlock(false_block);
4515 mature_immBlock(step_block);
4516 mature_immBlock(header_block);
4517 mature_immBlock(false_block);
4519 set_cur_block(false_block);
4522 static void create_jump_statement(const statement_t *statement,
4523 ir_node *target_block)
4525 if (get_cur_block() == NULL)
4528 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4529 ir_node *jump = new_d_Jmp(dbgi);
4530 add_immBlock_pred(target_block, jump);
4532 set_cur_block(NULL);
4535 static ir_node *get_break_label(void)
4537 if (break_label == NULL) {
4538 ir_node *cur_block = get_cur_block();
4539 break_label = new_immBlock();
4540 set_cur_block(cur_block);
4545 static void switch_statement_to_firm(switch_statement_t *statement)
4547 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4549 ir_node *expression = expression_to_firm(statement->expression);
4550 ir_node *cond = new_d_Cond(dbgi, expression);
4552 set_cur_block(NULL);
4554 ir_node *const old_switch_cond = current_switch_cond;
4555 ir_node *const old_break_label = break_label;
4556 const bool old_saw_default_label = saw_default_label;
4557 saw_default_label = false;
4558 current_switch_cond = cond;
4560 switch_statement_t *const old_switch = current_switch;
4561 current_switch = statement;
4563 /* determine a free number for the default label */
4564 unsigned long num_cases = 0;
4566 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4567 if (l->expression == NULL) {
4571 if (l->last_case >= l->first_case)
4572 num_cases += l->last_case - l->first_case + 1;
4573 if (l->last_case > def_nr)
4574 def_nr = l->last_case;
4577 if (def_nr == INT_MAX) {
4578 /* Bad: an overflow will occurr, we cannot be sure that the
4579 * maximum + 1 is a free number. Scan the values a second
4580 * time to find a free number.
4582 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4584 memset(bits, 0, (num_cases + 7) >> 3);
4585 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4586 if (l->expression == NULL) {
4590 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4591 if (start < num_cases && l->last_case >= 0) {
4592 unsigned long end = (unsigned long)l->last_case < num_cases ?
4593 (unsigned long)l->last_case : num_cases - 1;
4594 for (unsigned long cns = start; cns <= end; ++cns) {
4595 bits[cns >> 3] |= (1 << (cns & 7));
4599 /* We look at the first num_cases constants:
4600 * Either they are densed, so we took the last (num_cases)
4601 * one, or they are non densed, so we will find one free
4605 for (i = 0; i < num_cases; ++i)
4606 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4614 statement->default_proj_nr = def_nr;
4616 if (statement->body != NULL) {
4617 statement_to_firm(statement->body);
4620 if (get_cur_block() != NULL) {
4621 ir_node *jmp = new_Jmp();
4622 add_immBlock_pred(get_break_label(), jmp);
4625 if (!saw_default_label) {
4626 set_cur_block(get_nodes_block(cond));
4627 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4628 statement->default_proj_nr);
4629 add_immBlock_pred(get_break_label(), proj);
4632 if (break_label != NULL) {
4633 mature_immBlock(break_label);
4635 set_cur_block(break_label);
4637 assert(current_switch_cond == cond);
4638 current_switch = old_switch;
4639 current_switch_cond = old_switch_cond;
4640 break_label = old_break_label;
4641 saw_default_label = old_saw_default_label;
4644 static void case_label_to_firm(const case_label_statement_t *statement)
4646 if (statement->is_empty_range)
4649 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4651 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4654 ir_node *old_block = get_nodes_block(current_switch_cond);
4655 ir_node *block = new_immBlock();
4657 set_cur_block(old_block);
4658 if (statement->expression != NULL) {
4659 long pn = statement->first_case;
4660 long end_pn = statement->last_case;
4661 assert(pn <= end_pn);
4662 /* create jumps for all cases in the given range */
4664 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4665 add_immBlock_pred(block, proj);
4666 } while(pn++ < end_pn);
4668 saw_default_label = true;
4669 proj = new_d_defaultProj(dbgi, current_switch_cond,
4670 current_switch->default_proj_nr);
4672 add_immBlock_pred(block, proj);
4675 if (fallthrough != NULL) {
4676 add_immBlock_pred(block, fallthrough);
4678 mature_immBlock(block);
4679 set_cur_block(block);
4681 if (statement->statement != NULL) {
4682 statement_to_firm(statement->statement);
4686 static void label_to_firm(const label_statement_t *statement)
4688 ir_node *block = get_label_block(statement->label);
4690 if (get_cur_block() != NULL) {
4691 ir_node *jmp = new_Jmp();
4692 add_immBlock_pred(block, jmp);
4695 set_cur_block(block);
4697 keep_all_memory(block);
4699 if (statement->statement != NULL) {
4700 statement_to_firm(statement->statement);
4704 static void goto_to_firm(const goto_statement_t *statement)
4706 if (get_cur_block() == NULL)
4709 if (statement->expression) {
4710 ir_node *irn = expression_to_firm(statement->expression);
4711 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4712 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4714 set_irn_link(ijmp, ijmp_list);
4717 ir_node *block = get_label_block(statement->label);
4718 ir_node *jmp = new_Jmp();
4719 add_immBlock_pred(block, jmp);
4721 set_cur_block(NULL);
4724 static void asm_statement_to_firm(const asm_statement_t *statement)
4726 bool needs_memory = false;
4728 if (statement->is_volatile) {
4729 needs_memory = true;
4732 size_t n_clobbers = 0;
4733 asm_clobber_t *clobber = statement->clobbers;
4734 for( ; clobber != NULL; clobber = clobber->next) {
4735 const char *clobber_str = clobber->clobber.begin;
4737 if (!be_is_valid_clobber(clobber_str)) {
4738 errorf(&statement->base.source_position,
4739 "invalid clobber '%s' specified", clobber->clobber);
4743 if (strcmp(clobber_str, "memory") == 0) {
4744 needs_memory = true;
4748 ident *id = new_id_from_str(clobber_str);
4749 obstack_ptr_grow(&asm_obst, id);
4752 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4753 ident **clobbers = NULL;
4754 if (n_clobbers > 0) {
4755 clobbers = obstack_finish(&asm_obst);
4758 size_t n_inputs = 0;
4759 asm_argument_t *argument = statement->inputs;
4760 for ( ; argument != NULL; argument = argument->next)
4762 size_t n_outputs = 0;
4763 argument = statement->outputs;
4764 for ( ; argument != NULL; argument = argument->next)
4767 unsigned next_pos = 0;
4769 ir_node *ins[n_inputs + n_outputs + 1];
4772 ir_asm_constraint tmp_in_constraints[n_outputs];
4774 const expression_t *out_exprs[n_outputs];
4775 ir_node *out_addrs[n_outputs];
4776 size_t out_size = 0;
4778 argument = statement->outputs;
4779 for ( ; argument != NULL; argument = argument->next) {
4780 const char *constraints = argument->constraints.begin;
4781 asm_constraint_flags_t asm_flags
4782 = be_parse_asm_constraints(constraints);
4784 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4785 errorf(&statement->base.source_position,
4786 "some constraints in '%s' are not supported", constraints);
4789 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4790 errorf(&statement->base.source_position,
4791 "some constraints in '%s' are invalid", constraints);
4794 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4795 errorf(&statement->base.source_position,
4796 "no write flag specified for output constraints '%s'",
4801 unsigned pos = next_pos++;
4802 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4803 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4804 expression_t *expr = argument->expression;
4805 ir_node *addr = expression_to_addr(expr);
4806 /* in+output, construct an artifical same_as constraint on the
4808 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4810 ir_node *value = get_value_from_lvalue(expr, addr);
4812 snprintf(buf, sizeof(buf), "%u", pos);
4814 ir_asm_constraint constraint;
4815 constraint.pos = pos;
4816 constraint.constraint = new_id_from_str(buf);
4817 constraint.mode = get_ir_mode(expr->base.type);
4818 tmp_in_constraints[in_size] = constraint;
4819 ins[in_size] = value;
4824 out_exprs[out_size] = expr;
4825 out_addrs[out_size] = addr;
4827 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4828 /* pure memory ops need no input (but we have to make sure we
4829 * attach to the memory) */
4830 assert(! (asm_flags &
4831 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4832 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4833 needs_memory = true;
4835 /* we need to attach the address to the inputs */
4836 expression_t *expr = argument->expression;
4838 ir_asm_constraint constraint;
4839 constraint.pos = pos;
4840 constraint.constraint = new_id_from_str(constraints);
4841 constraint.mode = NULL;
4842 tmp_in_constraints[in_size] = constraint;
4844 ins[in_size] = expression_to_addr(expr);
4848 errorf(&statement->base.source_position,
4849 "only modifiers but no place set in constraints '%s'",
4854 ir_asm_constraint constraint;
4855 constraint.pos = pos;
4856 constraint.constraint = new_id_from_str(constraints);
4857 constraint.mode = get_ir_mode(argument->expression->base.type);
4859 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4861 assert(obstack_object_size(&asm_obst)
4862 == out_size * sizeof(ir_asm_constraint));
4863 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4866 obstack_grow(&asm_obst, tmp_in_constraints,
4867 in_size * sizeof(tmp_in_constraints[0]));
4868 /* find and count input and output arguments */
4869 argument = statement->inputs;
4870 for( ; argument != NULL; argument = argument->next) {
4871 const char *constraints = argument->constraints.begin;
4872 asm_constraint_flags_t asm_flags
4873 = be_parse_asm_constraints(constraints);
4875 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4876 errorf(&statement->base.source_position,
4877 "some constraints in '%s' are not supported", constraints);
4880 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4881 errorf(&statement->base.source_position,
4882 "some constraints in '%s' are invalid", constraints);
4885 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4886 errorf(&statement->base.source_position,
4887 "write flag specified for input constraints '%s'",
4893 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4894 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4895 /* we can treat this as "normal" input */
4896 input = expression_to_firm(argument->expression);
4897 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4898 /* pure memory ops need no input (but we have to make sure we
4899 * attach to the memory) */
4900 assert(! (asm_flags &
4901 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4902 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4903 needs_memory = true;
4904 input = expression_to_addr(argument->expression);
4906 errorf(&statement->base.source_position,
4907 "only modifiers but no place set in constraints '%s'",
4912 ir_asm_constraint constraint;
4913 constraint.pos = next_pos++;
4914 constraint.constraint = new_id_from_str(constraints);
4915 constraint.mode = get_irn_mode(input);
4917 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4918 ins[in_size++] = input;
4922 ir_asm_constraint constraint;
4923 constraint.pos = next_pos++;
4924 constraint.constraint = new_id_from_str("");
4925 constraint.mode = mode_M;
4927 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4928 ins[in_size++] = get_store();
4931 assert(obstack_object_size(&asm_obst)
4932 == in_size * sizeof(ir_asm_constraint));
4933 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4935 /* create asm node */
4936 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4938 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4940 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4941 out_size, output_constraints,
4942 n_clobbers, clobbers, asm_text);
4944 if (statement->is_volatile) {
4945 set_irn_pinned(node, op_pin_state_pinned);
4947 set_irn_pinned(node, op_pin_state_floats);
4950 /* create output projs & connect them */
4952 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4957 for (i = 0; i < out_size; ++i) {
4958 const expression_t *out_expr = out_exprs[i];
4960 ir_mode *mode = get_ir_mode(out_expr->base.type);
4961 ir_node *proj = new_Proj(node, mode, pn);
4962 ir_node *addr = out_addrs[i];
4964 set_value_for_expression_addr(out_expr, proj, addr);
4968 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4969 statement_to_firm(statement->try_statement);
4970 warningf(&statement->base.source_position, "structured exception handling ignored");
4973 static void leave_statement_to_firm(leave_statement_t *statement) {
4974 errorf(&statement->base.source_position, "__leave not supported yet");
4978 * Transform a statement.
4980 static void statement_to_firm(statement_t *statement)
4983 assert(!statement->base.transformed);
4984 statement->base.transformed = true;
4987 switch(statement->kind) {
4988 case STATEMENT_INVALID:
4989 panic("invalid statement found");
4991 case STATEMENT_EMPTY:
4994 case STATEMENT_COMPOUND:
4995 compound_statement_to_firm(&statement->compound);
4997 case STATEMENT_RETURN:
4998 return_statement_to_firm(&statement->returns);
5000 case STATEMENT_EXPRESSION:
5001 expression_statement_to_firm(&statement->expression);
5004 if_statement_to_firm(&statement->ifs);
5006 case STATEMENT_WHILE:
5007 while_statement_to_firm(&statement->whiles);
5009 case STATEMENT_DO_WHILE:
5010 do_while_statement_to_firm(&statement->do_while);
5012 case STATEMENT_DECLARATION:
5013 declaration_statement_to_firm(&statement->declaration);
5015 case STATEMENT_BREAK:
5016 create_jump_statement(statement, get_break_label());
5018 case STATEMENT_CONTINUE:
5019 create_jump_statement(statement, continue_label);
5021 case STATEMENT_SWITCH:
5022 switch_statement_to_firm(&statement->switchs);
5024 case STATEMENT_CASE_LABEL:
5025 case_label_to_firm(&statement->case_label);
5028 for_statement_to_firm(&statement->fors);
5030 case STATEMENT_LABEL:
5031 label_to_firm(&statement->label);
5033 case STATEMENT_GOTO:
5034 goto_to_firm(&statement->gotos);
5037 asm_statement_to_firm(&statement->asms);
5039 case STATEMENT_MS_TRY:
5040 ms_try_statement_to_firm(&statement->ms_try);
5042 case STATEMENT_LEAVE:
5043 leave_statement_to_firm(&statement->leave);
5046 panic("Statement not implemented\n");
5049 static int count_local_declarations(const declaration_t * decl,
5050 const declaration_t *const end)
5053 for (; decl != end; decl = decl->next) {
5054 if (decl->namespc != NAMESPACE_NORMAL)
5056 type_t *type = skip_typeref(decl->type);
5058 if (!decl->address_taken && is_type_scalar(type))
5064 static void count_decls_in_stmt(statement_t *stmt, void *const env)
5066 int *const count = env;
5068 switch (stmt->kind) {
5069 case STATEMENT_DECLARATION: {
5070 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5071 *count += count_local_declarations(decl_stmt->declarations_begin,
5072 decl_stmt->declarations_end->next);
5077 *count += count_local_declarations(stmt->fors.scope.declarations, NULL);
5085 static int get_function_n_local_vars(declaration_t *declaration)
5089 /* count parameters */
5090 count += count_local_declarations(declaration->scope.declarations, NULL);
5092 /* count local variables declared in body */
5093 walk_statements(declaration->init.statement, count_decls_in_stmt, &count);
5097 static void initialize_function_parameters(declaration_t *declaration)
5099 ir_graph *irg = current_ir_graph;
5100 ir_node *args = get_irg_args(irg);
5101 ir_node *start_block = get_irg_start_block(irg);
5102 ir_type *function_irtype = get_ir_type(declaration->type);
5105 declaration_t *parameter = declaration->scope.declarations;
5106 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5107 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5108 type_t *type = skip_typeref(parameter->type);
5110 bool needs_entity = parameter->address_taken;
5111 assert(!is_type_array(type));
5112 if (is_type_compound(type)) {
5113 needs_entity = true;
5117 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5118 ident *id = new_id_from_str(parameter->symbol->string);
5119 set_entity_ident(entity, id);
5121 parameter->declaration_kind
5122 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5123 parameter->v.entity = entity;
5127 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5128 ir_mode *param_mode = get_type_mode(param_irtype);
5131 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5133 ir_mode *mode = get_ir_mode(type);
5134 value = create_conv(NULL, value, mode);
5135 value = do_strict_conv(NULL, value);
5137 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5138 parameter->v.value_number = next_value_number_function;
5139 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5140 ++next_value_number_function;
5142 set_value(parameter->v.value_number, value);
5147 * Handle additional decl modifiers for IR-graphs
5149 * @param irg the IR-graph
5150 * @param dec_modifiers additional modifiers
5152 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5154 if (decl_modifiers & DM_NORETURN) {
5155 /* TRUE if the declaration includes the Microsoft
5156 __declspec(noreturn) specifier. */
5157 set_irg_additional_property(irg, mtp_property_noreturn);
5159 if (decl_modifiers & DM_NOTHROW) {
5160 /* TRUE if the declaration includes the Microsoft
5161 __declspec(nothrow) specifier. */
5162 set_irg_additional_property(irg, mtp_property_nothrow);
5164 if (decl_modifiers & DM_NAKED) {
5165 /* TRUE if the declaration includes the Microsoft
5166 __declspec(naked) specifier. */
5167 set_irg_additional_property(irg, mtp_property_naked);
5169 if (decl_modifiers & DM_FORCEINLINE) {
5170 /* TRUE if the declaration includes the
5171 Microsoft __forceinline specifier. */
5172 set_irg_inline_property(irg, irg_inline_forced);
5174 if (decl_modifiers & DM_NOINLINE) {
5175 /* TRUE if the declaration includes the Microsoft
5176 __declspec(noinline) specifier. */
5177 set_irg_inline_property(irg, irg_inline_forbidden);
5181 static void add_function_pointer(ir_type *segment, ir_entity *method,
5182 const char *unique_template)
5184 ir_type *method_type = get_entity_type(method);
5185 ident *id = id_unique(unique_template);
5186 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5188 ident *ide = id_unique(unique_template);
5189 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5190 ir_graph *irg = get_const_code_irg();
5191 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5194 set_entity_compiler_generated(ptr, 1);
5195 set_entity_variability(ptr, variability_constant);
5196 set_atomic_ent_value(ptr, val);
5200 * Generate possible IJmp branches to a given label block.
5202 static void gen_ijmp_branches(ir_node *block) {
5204 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5205 add_immBlock_pred(block, ijmp);
5210 * Create code for a function.
5212 static void create_function(declaration_t *declaration)
5214 ir_entity *function_entity = get_function_entity(declaration);
5216 if (declaration->init.statement == NULL)
5219 if (declaration->modifiers & DM_CONSTRUCTOR) {
5220 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5221 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5223 if (declaration->modifiers & DM_DESTRUCTOR) {
5224 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5225 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5228 current_function_decl = declaration;
5229 current_function_name = NULL;
5230 current_funcsig = NULL;
5232 assert(all_labels == NULL);
5233 all_labels = NEW_ARR_F(declaration_t *, 0);
5236 int n_local_vars = get_function_n_local_vars(declaration);
5237 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5239 ir_graph *old_current_function = current_function;
5240 current_function = irg;
5242 set_irg_fp_model(irg, firm_opt.fp_model);
5243 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5244 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5246 ir_node *first_block = get_cur_block();
5248 /* set inline flags */
5249 if (declaration->is_inline)
5250 set_irg_inline_property(irg, irg_inline_recomended);
5251 handle_decl_modifier_irg(irg, declaration->modifiers);
5253 next_value_number_function = 0;
5254 initialize_function_parameters(declaration);
5256 statement_to_firm(declaration->init.statement);
5258 ir_node *end_block = get_irg_end_block(irg);
5260 /* do we have a return statement yet? */
5261 if (get_cur_block() != NULL) {
5262 type_t *type = skip_typeref(declaration->type);
5263 assert(is_type_function(type));
5264 const function_type_t *func_type = &type->function;
5265 const type_t *return_type
5266 = skip_typeref(func_type->return_type);
5269 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5270 ret = new_Return(get_store(), 0, NULL);
5273 if (is_type_scalar(return_type)) {
5274 mode = get_ir_mode(func_type->return_type);
5280 /* ยง5.1.2.2.3 main implicitly returns 0 */
5281 if (strcmp(declaration->symbol->string, "main") == 0) {
5282 in[0] = new_Const(mode, get_mode_null(mode));
5284 in[0] = new_Unknown(mode);
5286 ret = new_Return(get_store(), 1, in);
5288 add_immBlock_pred(end_block, ret);
5291 bool has_computed_gotos = false;
5292 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5293 declaration_t *label = all_labels[i];
5294 if (label->address_taken) {
5295 gen_ijmp_branches(label->v.block);
5296 has_computed_gotos = true;
5298 mature_immBlock(label->v.block);
5300 if (has_computed_gotos) {
5301 /* if we have computed goto's in the function, we cannot inline it */
5302 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5303 warningf(&declaration->source_position,
5304 "function '%Y' can never be inlined because it contains a computed goto",
5305 declaration->symbol);
5307 set_irg_inline_property(irg, irg_inline_forbidden);
5310 DEL_ARR_F(all_labels);
5313 mature_immBlock(first_block);
5314 mature_immBlock(end_block);
5316 irg_finalize_cons(irg);
5318 /* finalize the frame type */
5319 ir_type *frame_type = get_irg_frame_type(irg);
5320 int n = get_compound_n_members(frame_type);
5323 for(int i = 0; i < n; ++i) {
5324 ir_entity *entity = get_compound_member(frame_type, i);
5325 ir_type *entity_type = get_entity_type(entity);
5327 int align = get_type_alignment_bytes(entity_type);
5328 if (align > align_all)
5332 misalign = offset % align;
5334 offset += align - misalign;
5338 set_entity_offset(entity, offset);
5339 offset += get_type_size_bytes(entity_type);
5341 set_type_size_bytes(frame_type, offset);
5342 set_type_alignment_bytes(frame_type, align_all);
5345 current_function = old_current_function;
5348 static void scope_to_firm(scope_t *scope)
5350 /* first pass: create declarations */
5351 declaration_t *declaration = scope->declarations;
5352 for( ; declaration != NULL; declaration = declaration->next) {
5353 if (declaration->namespc != NAMESPACE_NORMAL)
5355 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5356 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5358 if (declaration->symbol == NULL)
5361 type_t *type = skip_typeref(declaration->type);
5362 if (is_type_function(type)) {
5363 get_function_entity(declaration);
5365 create_global_variable(declaration);
5369 /* second pass: create code/initializers */
5370 declaration = scope->declarations;
5371 for( ; declaration != NULL; declaration = declaration->next) {
5372 if (declaration->namespc != NAMESPACE_NORMAL)
5374 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5375 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5377 if (declaration->symbol == NULL)
5380 type_t *type = declaration->type;
5381 if (type->kind == TYPE_FUNCTION) {
5382 create_function(declaration);
5383 declaration_t *inner;
5384 for (inner = next_inner_function(); inner != NULL;
5385 inner = next_inner_function())
5386 create_function(inner);
5388 assert(declaration->declaration_kind
5389 == DECLARATION_KIND_GLOBAL_VARIABLE);
5390 current_ir_graph = get_const_code_irg();
5391 create_declaration_initializer(declaration);
5396 static void set_be_option(const char *option)
5398 int res = firm_be_option(option);
5402 void init_ast2firm(void)
5404 obstack_init(&asm_obst);
5405 init_atomic_modes();
5407 id_underscore = new_id_from_chars("_", 1);
5408 id_imp = new_id_from_chars("__imp_", 6);
5410 /* OS option must be set to the backend */
5411 switch (firm_opt.os_support) {
5412 case OS_SUPPORT_MINGW:
5413 create_ld_ident = create_ld_ident_win32;
5414 set_be_option("ia32-gasmode=mingw");
5416 case OS_SUPPORT_LINUX:
5417 create_ld_ident = create_ld_ident_linux_elf;
5418 set_be_option("ia32-gasmode=elf");
5420 case OS_SUPPORT_MACHO:
5421 create_ld_ident = create_ld_ident_macho;
5422 set_be_option("ia32-gasmode=macho");
5423 set_be_option("ia32-stackalign=4");
5424 set_be_option("pic");
5428 /* create idents for all known runtime functions */
5429 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5430 rts_idents[i] = new_id_from_str(rts_data[i].name);
5433 entitymap_init(&entitymap);
5436 static void init_ir_types(void)
5438 static int ir_types_initialized = 0;
5439 if (ir_types_initialized)
5441 ir_types_initialized = 1;
5443 ir_type_int = get_ir_type(type_int);
5444 ir_type_const_char = get_ir_type(type_const_char);
5445 ir_type_wchar_t = get_ir_type(type_wchar_t);
5446 ir_type_void = get_ir_type(type_void);
5449 void exit_ast2firm(void)
5451 entitymap_destroy(&entitymap);
5452 obstack_free(&asm_obst, NULL);
5455 static void global_asm_to_firm(statement_t *s)
5457 for (; s != NULL; s = s->base.next) {
5458 assert(s->kind == STATEMENT_ASM);
5460 char const *const text = s->asms.asm_text.begin;
5461 size_t size = s->asms.asm_text.size;
5463 /* skip the last \0 */
5464 if (text[size - 1] == '\0')
5467 ident *const id = new_id_from_chars(text, size);
5472 void translation_unit_to_firm(translation_unit_t *unit)
5474 /* just to be sure */
5475 continue_label = NULL;
5477 current_switch_cond = NULL;
5481 scope_to_firm(&unit->scope);
5482 global_asm_to_firm(unit->global_asm);
5484 current_ir_graph = NULL;