2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm.h>
27 #include <libfirm/adt/obst.h>
28 #include <libfirm/adt/bitfiddle.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"
44 #include "entitymap_t.h"
45 #include "driver/firm_opt.h"
46 #include "driver/firm_cmdline.h"
48 /* some idents needed for name mangling */
49 static ident *id_underscore;
52 static ir_type *ir_type_const_char;
53 static ir_type *ir_type_wchar_t;
54 static ir_type *ir_type_void;
55 static ir_type *ir_type_int;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static declaration_t **all_labels;
63 static declaration_t **inner_functions;
64 static int inner_function_idx;
65 static ir_node *ijmp_list;
66 static bool constant_folding;
68 extern bool have_const_functions;
70 static const declaration_t *current_function_decl;
71 static ir_node *current_function_name;
72 static ir_node *current_funcsig;
73 static switch_statement_t *current_switch;
74 static ir_graph *current_function;
76 static entitymap_t entitymap;
78 static struct obstack asm_obst;
80 typedef enum declaration_kind_t {
81 DECLARATION_KIND_UNKNOWN,
82 DECLARATION_KIND_FUNCTION,
83 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
84 DECLARATION_KIND_GLOBAL_VARIABLE,
85 DECLARATION_KIND_LOCAL_VARIABLE,
86 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
87 DECLARATION_KIND_COMPOUND_MEMBER,
88 DECLARATION_KIND_LABEL_BLOCK,
89 DECLARATION_KIND_ENUM_ENTRY,
90 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
91 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
92 DECLARATION_KIND_TYPE,
93 DECLARATION_KIND_INNER_FUNCTION
96 static ir_type *get_ir_type(type_t *type);
97 static ir_type *get_ir_type_incomplete(type_t *type);
98 static int count_decls_in_stmts(const statement_t *stmt);
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%d", 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%d", 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%d", 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 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
324 atomic_type_kind_t kind = type->akind;
325 ir_mode *mode = _atomic_modes[kind];
326 ident *id = get_mode_ident(mode);
327 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
329 set_type_alignment_bytes(irtype, type->base.alignment);
335 * Creates a Firm type for a complex type
337 static ir_type *create_complex_type(const complex_type_t *type)
339 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
340 atomic_type_kind_t kind = type->akind;
341 ir_mode *mode = _atomic_modes[kind];
342 ident *id = get_mode_ident(mode);
347 /* FIXME: finish the array */
352 * Creates a Firm type for an imaginary type
354 static ir_type *create_imaginary_type(const imaginary_type_t *type)
356 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
357 atomic_type_kind_t kind = type->akind;
358 ir_mode *mode = _atomic_modes[kind];
359 ident *id = get_mode_ident(mode);
360 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
362 set_type_alignment_bytes(irtype, type->base.alignment);
368 * return type of a parameter (and take transparent union gnu extension into
371 static type_t *get_parameter_type(type_t *type)
373 type = skip_typeref(type);
374 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
375 declaration_t *decl = type->compound.declaration;
376 type = decl->scope.declarations->type;
382 static ir_type *create_method_type(const function_type_t *function_type)
384 type_t *return_type = function_type->return_type;
386 ident *id = id_unique("functiontype.%u");
387 int n_parameters = count_parameters(function_type);
388 int n_results = return_type == type_void ? 0 : 1;
389 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
390 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
392 if (return_type != type_void) {
393 ir_type *restype = get_ir_type(return_type);
394 set_method_res_type(irtype, 0, restype);
397 function_parameter_t *parameter = function_type->parameters;
399 for ( ; parameter != NULL; parameter = parameter->next) {
400 type_t *type = get_parameter_type(parameter->type);
401 ir_type *p_irtype = get_ir_type(type);
402 set_method_param_type(irtype, n, p_irtype);
406 if (function_type->variadic || function_type->unspecified_parameters) {
407 set_method_variadicity(irtype, variadicity_variadic);
410 unsigned cc = get_method_calling_convention(irtype);
411 switch (function_type->calling_convention) {
412 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
415 set_method_calling_convention(irtype, SET_CDECL(cc));
419 if (function_type->variadic || function_type->unspecified_parameters)
422 /* only non-variadic function can use stdcall, else use cdecl */
423 set_method_calling_convention(irtype, SET_STDCALL(cc));
427 if (function_type->variadic || function_type->unspecified_parameters)
429 /* only non-variadic function can use fastcall, else use cdecl */
430 set_method_calling_convention(irtype, SET_FASTCALL(cc));
434 /* Hmm, leave default, not accepted by the parser yet. */
435 warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet");
441 static ir_type *create_pointer_type(pointer_type_t *type)
443 type_t *points_to = type->points_to;
444 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
445 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
446 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
447 ir_points_to, mode_P_data, dbgi);
452 static ir_type *create_array_type(array_type_t *type)
454 type_t *element_type = type->element_type;
455 ir_type *ir_element_type = get_ir_type(element_type);
457 ident *id = id_unique("array.%u");
458 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
459 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
461 const int align = get_type_alignment_bytes(ir_element_type);
462 set_type_alignment_bytes(ir_type, align);
464 if (type->size_constant) {
465 int n_elements = type->size;
467 set_array_bounds_int(ir_type, 0, 0, n_elements);
469 size_t elemsize = get_type_size_bytes(ir_element_type);
470 if (elemsize % align > 0) {
471 elemsize += align - (elemsize % align);
473 set_type_size_bytes(ir_type, n_elements * elemsize);
475 set_array_lower_bound_int(ir_type, 0, 0);
477 set_type_state(ir_type, layout_fixed);
483 * Return the signed integer type of size bits.
485 * @param size the size
487 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
490 static ir_mode *s_modes[64 + 1] = {NULL, };
494 if (size <= 0 || size > 64)
497 mode = s_modes[size];
501 snprintf(name, sizeof(name), "bf_I%u", size);
502 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
503 size <= 32 ? 32 : size );
504 s_modes[size] = mode;
508 snprintf(name, sizeof(name), "I%u", size);
509 ident *id = new_id_from_str(name);
510 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
511 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
512 set_primitive_base_type(res, base_tp);
518 * Return the unsigned integer type of size bits.
520 * @param size the size
522 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
525 static ir_mode *u_modes[64 + 1] = {NULL, };
529 if (size <= 0 || size > 64)
532 mode = u_modes[size];
536 snprintf(name, sizeof(name), "bf_U%u", size);
537 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
538 size <= 32 ? 32 : size );
539 u_modes[size] = mode;
544 snprintf(name, sizeof(name), "U%u", size);
545 ident *id = new_id_from_str(name);
546 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
547 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
548 set_primitive_base_type(res, base_tp);
553 static ir_type *create_bitfield_type(bitfield_type_t *const type)
555 type_t *base = skip_typeref(type->base_type);
556 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
557 ir_type *irbase = get_ir_type(base);
559 unsigned size = type->bit_size;
561 assert(!is_type_float(base));
562 if (is_type_signed(base)) {
563 return get_signed_int_type_for_bit_size(irbase, size);
565 return get_unsigned_int_type_for_bit_size(irbase, size);
569 #define INVALID_TYPE ((ir_type_ptr)-1)
572 COMPOUND_IS_STRUCT = false,
573 COMPOUND_IS_UNION = true
577 * Construct firm type from ast struct type.
579 * As anonymous inner structs get flattened to a single firm type, we might get
580 * irtype, outer_offset and out_align passed (they represent the position of
581 * the anonymous inner struct inside the resulting firm struct)
583 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
584 size_t *outer_offset, size_t *outer_align,
585 bool incomplete, bool is_union)
587 declaration_t *declaration = type->declaration;
588 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
590 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
591 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
593 return declaration->v.irtype;
595 size_t align_all = 1;
597 size_t bit_offset = 0;
600 if (irtype == NULL) {
601 symbol_t *symbol = declaration->symbol;
603 if (symbol != NULL) {
604 id = new_id_from_str(symbol->string);
607 id = id_unique("__anonymous_union.%u");
609 id = id_unique("__anonymous_struct.%u");
612 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
615 irtype = new_d_type_union(id, dbgi);
617 irtype = new_d_type_struct(id, dbgi);
620 declaration->declaration_kind
621 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
622 declaration->v.irtype = irtype;
623 //type->base.firm_type = irtype;
625 offset = *outer_offset;
626 align_all = *outer_align;
632 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
634 declaration_t *entry = declaration->scope.declarations;
635 for( ; entry != NULL; entry = entry->next) {
636 if (entry->namespc != NAMESPACE_NORMAL)
639 size_t prev_offset = offset;
641 symbol_t *symbol = entry->symbol;
642 type_t *entry_type = skip_typeref(entry->type);
643 dbg_info *dbgi = get_dbg_info(&entry->source_position);
646 if (symbol != NULL) {
647 ident = new_id_from_str(symbol->string);
649 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
650 create_compound_type(&entry_type->compound, irtype, &offset,
651 &align_all, false, COMPOUND_IS_STRUCT);
652 goto finished_member;
653 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
654 create_compound_type(&entry_type->compound, irtype, &offset,
655 &align_all, false, COMPOUND_IS_UNION);
656 goto finished_member;
658 assert(entry_type->kind == TYPE_BITFIELD);
660 ident = id_unique("anon.%u");
663 ir_type *base_irtype;
664 if (entry_type->kind == TYPE_BITFIELD) {
665 base_irtype = get_ir_type(entry_type->bitfield.base_type);
667 base_irtype = get_ir_type(entry_type);
670 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
671 size_t misalign = offset % entry_alignment;
673 ir_type *entry_irtype = get_ir_type(entry_type);
674 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
677 size_t bits_remainder;
678 if (entry_type->kind == TYPE_BITFIELD) {
679 size_t size_bits = entry_type->bitfield.bit_size;
680 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
682 if (size_bits > rest_size_bits) {
683 /* start a new bucket */
684 offset += entry_alignment - misalign;
690 /* put into current bucket */
691 base = offset - misalign;
692 bits_remainder = misalign * 8 + bit_offset;
695 offset += size_bits / 8;
696 bit_offset = bit_offset + (size_bits % 8);
698 size_t entry_size = get_type_size_bytes(base_irtype);
699 if (misalign > 0 || bit_offset > 0)
700 offset += entry_alignment - misalign;
704 offset += entry_size;
708 if (entry_alignment > align_all) {
709 if (entry_alignment % align_all != 0) {
710 panic("uneven alignments not supported yet");
712 align_all = entry_alignment;
715 set_entity_offset(entity, base);
716 set_entity_offset_bits_remainder(entity,
717 (unsigned char) bits_remainder);
718 //add_struct_member(irtype, entity);
719 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
720 assert(entry->v.entity == NULL);
721 entry->v.entity = entity;
725 size_t entry_size = offset - prev_offset;
726 if (entry_size > size) {
738 size_t misalign = offset % align_all;
739 if (misalign > 0 || bit_offset > 0) {
740 size += align_all - misalign;
743 if (outer_offset != NULL) {
745 *outer_offset = offset;
747 *outer_offset += size;
750 if (align_all > *outer_align) {
751 if (align_all % *outer_align != 0) {
752 panic("uneven alignments not supported yet");
754 *outer_align = align_all;
757 set_type_alignment_bytes(irtype, align_all);
758 set_type_size_bytes(irtype, size);
759 set_type_state(irtype, layout_fixed);
765 static ir_type *create_enum_type(enum_type_t *const type)
767 type->base.firm_type = ir_type_int;
769 ir_mode *const mode = mode_int;
770 tarval *const one = get_mode_one(mode);
771 tarval * tv_next = get_tarval_null(mode);
773 bool constant_folding_old = constant_folding;
774 constant_folding = true;
776 declaration_t *declaration = type->declaration->next;
777 for (; declaration != NULL; declaration = declaration->next) {
778 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
781 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
783 expression_t *const init = declaration->init.enum_value;
785 ir_node *const cnst = expression_to_firm(init);
786 if (!is_Const(cnst)) {
787 panic("couldn't fold constant");
789 tv_next = get_Const_tarval(cnst);
791 declaration->v.enum_val = tv_next;
792 tv_next = tarval_add(tv_next, one);
795 constant_folding = constant_folding_old;
800 static ir_type *get_ir_type_incomplete(type_t *type)
802 assert(type != NULL);
803 type = skip_typeref(type);
805 if (type->base.firm_type != NULL) {
806 assert(type->base.firm_type != INVALID_TYPE);
807 return type->base.firm_type;
810 switch (type->kind) {
811 case TYPE_COMPOUND_STRUCT:
812 return create_compound_type(&type->compound, NULL, NULL, NULL,
813 true, COMPOUND_IS_STRUCT);
814 case TYPE_COMPOUND_UNION:
815 return create_compound_type(&type->compound, NULL, NULL, NULL,
816 true, COMPOUND_IS_UNION);
818 return get_ir_type(type);
822 static ir_type *get_ir_type(type_t *type)
824 assert(type != NULL);
826 type = skip_typeref(type);
828 if (type->base.firm_type != NULL) {
829 assert(type->base.firm_type != INVALID_TYPE);
830 return type->base.firm_type;
833 ir_type *firm_type = NULL;
834 switch (type->kind) {
836 /* Happens while constant folding, when there was an error */
837 return create_atomic_type(&type_void->atomic);
840 firm_type = create_atomic_type(&type->atomic);
843 firm_type = create_complex_type(&type->complex);
846 firm_type = create_imaginary_type(&type->imaginary);
849 firm_type = create_method_type(&type->function);
852 firm_type = create_pointer_type(&type->pointer);
855 firm_type = create_array_type(&type->array);
857 case TYPE_COMPOUND_STRUCT:
858 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
859 false, COMPOUND_IS_STRUCT);
861 case TYPE_COMPOUND_UNION:
862 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
863 false, COMPOUND_IS_UNION);
866 firm_type = create_enum_type(&type->enumt);
869 firm_type = get_ir_type(type->builtin.real_type);
872 firm_type = create_bitfield_type(&type->bitfield);
880 if (firm_type == NULL)
881 panic("unknown type found");
883 type->base.firm_type = firm_type;
887 static inline ir_mode *get_ir_mode(type_t *type)
889 ir_type *irtype = get_ir_type(type);
891 /* firm doesn't report a mode for arrays somehow... */
892 if (is_Array_type(irtype)) {
896 ir_mode *mode = get_type_mode(irtype);
897 assert(mode != NULL);
901 /** Names of the runtime functions. */
902 static const struct {
903 int id; /**< the rts id */
904 int n_res; /**< number of return values */
905 const char *name; /**< the name of the rts function */
906 int n_params; /**< number of parameters */
907 unsigned flags; /**< language flags */
909 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
910 { rts_abort, 0, "abort", 0, _C89 },
911 { rts_alloca, 1, "alloca", 1, _ALL },
912 { rts_abs, 1, "abs", 1, _C89 },
913 { rts_labs, 1, "labs", 1, _C89 },
914 { rts_llabs, 1, "llabs", 1, _C99 },
915 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
917 { rts_fabs, 1, "fabs", 1, _C89 },
918 { rts_sqrt, 1, "sqrt", 1, _C89 },
919 { rts_cbrt, 1, "cbrt", 1, _C99 },
920 { rts_exp, 1, "exp", 1, _C89 },
921 { rts_exp2, 1, "exp2", 1, _C89 },
922 { rts_exp10, 1, "exp10", 1, _GNUC },
923 { rts_log, 1, "log", 1, _C89 },
924 { rts_log2, 1, "log2", 1, _C89 },
925 { rts_log10, 1, "log10", 1, _C89 },
926 { rts_pow, 1, "pow", 2, _C89 },
927 { rts_sin, 1, "sin", 1, _C89 },
928 { rts_cos, 1, "cos", 1, _C89 },
929 { rts_tan, 1, "tan", 1, _C89 },
930 { rts_asin, 1, "asin", 1, _C89 },
931 { rts_acos, 1, "acos", 1, _C89 },
932 { rts_atan, 1, "atan", 1, _C89 },
933 { rts_sinh, 1, "sinh", 1, _C89 },
934 { rts_cosh, 1, "cosh", 1, _C89 },
935 { rts_tanh, 1, "tanh", 1, _C89 },
937 { rts_fabsf, 1, "fabsf", 1, _C99 },
938 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
939 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
940 { rts_expf, 1, "expf", 1, _C99 },
941 { rts_exp2f, 1, "exp2f", 1, _C99 },
942 { rts_exp10f, 1, "exp10f", 1, _GNUC },
943 { rts_logf, 1, "logf", 1, _C99 },
944 { rts_log2f, 1, "log2f", 1, _C99 },
945 { rts_log10f, 1, "log10f", 1, _C99 },
946 { rts_powf, 1, "powf", 2, _C99 },
947 { rts_sinf, 1, "sinf", 1, _C99 },
948 { rts_cosf, 1, "cosf", 1, _C99 },
949 { rts_tanf, 1, "tanf", 1, _C99 },
950 { rts_asinf, 1, "asinf", 1, _C99 },
951 { rts_acosf, 1, "acosf", 1, _C99 },
952 { rts_atanf, 1, "atanf", 1, _C99 },
953 { rts_sinhf, 1, "sinhf", 1, _C99 },
954 { rts_coshf, 1, "coshf", 1, _C99 },
955 { rts_tanhf, 1, "tanhf", 1, _C99 },
957 { rts_fabsl, 1, "fabsl", 1, _C99 },
958 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
959 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
960 { rts_expl, 1, "expl", 1, _C99 },
961 { rts_exp2l, 1, "exp2l", 1, _C99 },
962 { rts_exp10l, 1, "exp10l", 1, _GNUC },
963 { rts_logl, 1, "logl", 1, _C99 },
964 { rts_log2l, 1, "log2l", 1, _C99 },
965 { rts_log10l, 1, "log10l", 1, _C99 },
966 { rts_powl, 1, "powl", 2, _C99 },
967 { rts_sinl, 1, "sinl", 1, _C99 },
968 { rts_cosl, 1, "cosl", 1, _C99 },
969 { rts_tanl, 1, "tanl", 1, _C99 },
970 { rts_asinl, 1, "asinl", 1, _C99 },
971 { rts_acosl, 1, "acosl", 1, _C99 },
972 { rts_atanl, 1, "atanl", 1, _C99 },
973 { rts_sinhl, 1, "sinhl", 1, _C99 },
974 { rts_coshl, 1, "coshl", 1, _C99 },
975 { rts_tanhl, 1, "tanhl", 1, _C99 },
977 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
978 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
979 { rts_strcmp, 1, "strcmp", 2, _C89 },
980 { rts_strncmp, 1, "strncmp", 3, _C89 }
983 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
986 * Mangles an entity linker (ld) name for win32 usage.
988 * @param ent the entity to be mangled
989 * @param declaration the declaration
991 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
995 if (is_Method_type(get_entity_type(ent)))
996 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
998 /* always add an underscore in win32 */
999 id = mangle(id_underscore, get_entity_ident(ent));
1002 decl_modifiers_t decl_modifiers = declaration->modifiers;
1003 if (decl_modifiers & DM_DLLIMPORT) {
1004 /* add prefix for imported symbols */
1005 id = mangle(id_imp, id);
1011 * Mangles an entity linker (ld) name for Linux ELF usage.
1013 * @param ent the entity to be mangled
1014 * @param declaration the declaration
1016 static ident *create_ld_ident_linux_elf(ir_entity *entity,
1017 declaration_t *declaration)
1020 return get_entity_ident(entity);
1024 * Mangles an entity linker (ld) name for Mach-O usage.
1026 * @param ent the entity to be mangled
1027 * @param declaration the declaration
1029 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
1032 ident *id = mangle(id_underscore, get_entity_ident(ent));
1036 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
1037 declaration_t *declaration);
1038 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1041 * Handle GNU attributes for entities
1043 * @param ent the entity
1044 * @param decl the routine declaration
1046 static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
1048 if (decl->modifiers & DM_PURE) {
1049 /* TRUE if the declaration includes the GNU
1050 __attribute__((pure)) specifier. */
1051 set_entity_additional_property(ent, mtp_property_pure);
1053 if (decl->modifiers & DM_CONST) {
1054 set_entity_additional_property(ent, mtp_property_const);
1055 have_const_functions = true;
1057 if (decl->modifiers & DM_USED) {
1058 /* TRUE if the declaration includes the GNU
1059 __attribute__((used)) specifier. */
1060 set_entity_stickyness(ent, stickyness_sticky);
1065 * Creates an entity representing a function.
1067 * @param declaration the function declaration
1069 static ir_entity *get_function_entity(declaration_t *declaration)
1071 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION ||
1072 declaration->declaration_kind == DECLARATION_KIND_INNER_FUNCTION)
1073 return declaration->v.entity;
1074 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
1076 symbol_t *symbol = declaration->symbol;
1077 ident *id = new_id_from_str(symbol->string);
1079 ir_type *global_type = get_glob_type();
1080 ir_type *ir_type_method = get_ir_type(declaration->type);
1081 assert(is_Method_type(ir_type_method));
1083 /* already an entity defined? */
1084 ir_entity *entity = entitymap_get(&entitymap, symbol);
1085 if (entity != NULL) {
1086 if (get_entity_visibility(entity) == visibility_external_allocated
1087 && declaration->init.statement != NULL) {
1088 set_entity_visibility(entity, visibility_external_visible);
1090 goto entity_created;
1093 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1094 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1095 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1097 handle_gnu_attributes_ent(entity, declaration);
1099 /* static inline => local
1100 * extern inline => local
1101 * inline without definition => local
1102 * inline with definition => external_visible */
1103 storage_class_tag_t const storage_class = (storage_class_tag_t)declaration->storage_class;
1104 bool const is_inline = declaration->is_inline;
1105 bool const has_body = declaration->init.statement != NULL;
1106 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1107 set_entity_visibility(entity, visibility_external_visible);
1108 } else if (storage_class == STORAGE_CLASS_STATIC ||
1109 (is_inline && has_body)) {
1111 /* this entity was declared, but is defined nowhere */
1112 set_entity_peculiarity(entity, peculiarity_description);
1114 set_entity_visibility(entity, visibility_local);
1115 } else if (has_body) {
1116 set_entity_visibility(entity, visibility_external_visible);
1118 set_entity_visibility(entity, visibility_external_allocated);
1120 set_entity_allocation(entity, allocation_static);
1122 /* We should check for file scope here, but as long as we compile C only
1123 this is not needed. */
1124 if (! firm_opt.freestanding) {
1125 /* check for a known runtime function */
1126 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1127 if (id != rts_idents[i])
1130 /* ignore those rts functions not necessary needed for current mode */
1131 if ((c_mode & rts_data[i].flags) == 0)
1133 assert(rts_entities[rts_data[i].id] == NULL);
1134 rts_entities[rts_data[i].id] = entity;
1138 entitymap_insert(&entitymap, symbol, entity);
1141 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1142 declaration->v.entity = entity;
1148 * Creates a Const node representing a constant.
1150 static ir_node *const_to_firm(const const_expression_t *cnst)
1152 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1153 ir_mode *mode = get_ir_mode(cnst->base.type);
1158 if (mode_is_float(mode)) {
1159 tv = new_tarval_from_double(cnst->v.float_value, mode);
1161 if (mode_is_signed(mode)) {
1162 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1164 len = snprintf(buf, sizeof(buf), "%llu",
1165 (unsigned long long) cnst->v.int_value);
1167 tv = new_tarval_from_str(buf, len, mode);
1170 return new_d_Const(dbgi, mode, tv);
1174 * Creates a Const node representing a character constant.
1176 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1178 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1179 ir_mode *mode = get_ir_mode(cnst->base.type);
1181 long long int v = 0;
1182 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1183 if (char_is_signed) {
1184 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1186 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1190 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1191 tarval *tv = new_tarval_from_str(buf, len, mode);
1193 return new_d_Const(dbgi, mode, tv);
1197 * Creates a Const node representing a wide character constant.
1199 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1201 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1202 ir_mode *mode = get_ir_mode(cnst->base.type);
1204 long long int v = cnst->v.wide_character.begin[0];
1207 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1208 tarval *tv = new_tarval_from_str(buf, len, mode);
1210 return new_d_Const(dbgi, mode, tv);
1214 * Creates a SymConst for a given entity.
1216 * @param dbgi debug info
1217 * @param mode the (reference) mode for the SymConst
1218 * @param entity the entity
1220 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1223 assert(entity != NULL);
1224 union symconst_symbol sym;
1225 sym.entity_p = entity;
1226 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1230 * Creates a SymConst node representing a string constant.
1232 * @param src_pos the source position of the string constant
1233 * @param id_prefix a prefix for the name of the generated string constant
1234 * @param value the value of the string constant
1236 static ir_node *string_to_firm(const source_position_t *const src_pos,
1237 const char *const id_prefix,
1238 const string_t *const value)
1240 ir_type *const global_type = get_glob_type();
1241 dbg_info *const dbgi = get_dbg_info(src_pos);
1242 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1243 ir_type_const_char, dbgi);
1245 ident *const id = id_unique(id_prefix);
1246 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1247 set_entity_ld_ident(entity, id);
1248 set_entity_variability(entity, variability_constant);
1249 set_entity_allocation(entity, allocation_static);
1251 ir_type *const elem_type = ir_type_const_char;
1252 ir_mode *const mode = get_type_mode(elem_type);
1254 const char* const string = value->begin;
1255 const size_t slen = value->size;
1257 set_array_lower_bound_int(type, 0, 0);
1258 set_array_upper_bound_int(type, 0, slen);
1259 set_type_size_bytes(type, slen);
1260 set_type_state(type, layout_fixed);
1262 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1263 for(size_t i = 0; i < slen; ++i) {
1264 tvs[i] = new_tarval_from_long(string[i], mode);
1267 set_array_entity_values(entity, tvs, slen);
1270 return create_symconst(dbgi, mode_P_data, entity);
1274 * Creates a SymConst node representing a string literal.
1276 * @param literal the string literal
1278 static ir_node *string_literal_to_firm(
1279 const string_literal_expression_t* literal)
1281 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1286 * Creates a SymConst node representing a wide string literal.
1288 * @param literal the wide string literal
1290 static ir_node *wide_string_literal_to_firm(
1291 const wide_string_literal_expression_t* const literal)
1293 ir_type *const global_type = get_glob_type();
1294 ir_type *const elem_type = ir_type_wchar_t;
1295 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1296 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1299 ident *const id = id_unique("Lstr.%u");
1300 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1301 set_entity_ld_ident(entity, id);
1302 set_entity_variability(entity, variability_constant);
1303 set_entity_allocation(entity, allocation_static);
1305 ir_mode *const mode = get_type_mode(elem_type);
1307 const wchar_rep_t *const string = literal->value.begin;
1308 const size_t slen = literal->value.size;
1310 set_array_lower_bound_int(type, 0, 0);
1311 set_array_upper_bound_int(type, 0, slen);
1312 set_type_size_bytes(type, slen);
1313 set_type_state(type, layout_fixed);
1315 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1316 for(size_t i = 0; i < slen; ++i) {
1317 tvs[i] = new_tarval_from_long(string[i], mode);
1320 set_array_entity_values(entity, tvs, slen);
1323 return create_symconst(dbgi, mode_P_data, entity);
1326 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1327 ir_node *const addr)
1329 ir_type *irtype = get_ir_type(type);
1330 if (is_compound_type(irtype)
1331 || is_Method_type(irtype)
1332 || is_Array_type(irtype)) {
1336 ir_mode *const mode = get_type_mode(irtype);
1337 ir_node *const memory = get_store();
1338 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1339 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1340 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1342 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1343 set_Load_volatility(load, volatility_is_volatile);
1346 set_store(load_mem);
1351 * Creates a strict Conv if neccessary.
1353 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1355 ir_mode *mode = get_irn_mode(node);
1357 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1359 if (!mode_is_float(mode))
1362 /* check if there is already a Conv */
1363 if (is_Conv(node)) {
1364 /* convert it into a strict Conv */
1365 set_Conv_strict(node, 1);
1369 /* otherwise create a new one */
1370 return new_d_strictConv(dbgi, node, mode);
1373 static ir_node *get_global_var_address(dbg_info *const dbgi,
1374 const declaration_t *const decl)
1376 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1378 ir_entity *const entity = decl->v.entity;
1379 switch ((storage_class_tag_t)decl->storage_class) {
1380 case STORAGE_CLASS_THREAD:
1381 case STORAGE_CLASS_THREAD_EXTERN:
1382 case STORAGE_CLASS_THREAD_STATIC: {
1383 ir_node *const no_mem = new_NoMem();
1384 ir_node *const tls = get_irg_tls(current_ir_graph);
1385 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1389 return create_symconst(dbgi, mode_P_data, entity);
1394 * Returns the correct base address depending on whether it is a parameter or a
1395 * normal local variable.
1397 static ir_node *get_local_frame(ir_entity *const ent)
1399 ir_graph *const irg = current_ir_graph;
1400 const ir_type *const owner = get_entity_owner(ent);
1401 if (owner == get_irg_frame_type(irg)) {
1402 return get_irg_frame(irg);
1404 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1405 return get_irg_value_param_base(irg);
1409 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1411 ir_mode *value_mode = get_irn_mode(value);
1413 if (value_mode == dest_mode || is_Bad(value))
1416 if (dest_mode == mode_b) {
1417 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1418 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1419 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1423 return new_d_Conv(dbgi, value, dest_mode);
1427 * Keep all memory edges of the given block.
1429 static void keep_all_memory(ir_node *block) {
1430 ir_node *old = get_cur_block();
1432 set_cur_block(block);
1433 keep_alive(get_store());
1434 /* TODO: keep all memory edges from restricted pointers */
1438 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1440 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1441 declaration_t *declaration = ref->declaration;
1442 type_t *type = skip_typeref(declaration->type);
1444 /* make sure the type is constructed */
1445 (void) get_ir_type(type);
1447 switch ((declaration_kind_t)declaration->declaration_kind) {
1448 case DECLARATION_KIND_TYPE:
1449 case DECLARATION_KIND_UNKNOWN:
1452 case DECLARATION_KIND_ENUM_ENTRY: {
1453 ir_mode *const mode = get_ir_mode(type);
1454 if (ref->is_outer_ref) {
1455 /* reference to an outer variable */
1456 panic("Outer variable reference not implemented");
1458 return new_Const(mode, declaration->v.enum_val);
1462 case DECLARATION_KIND_LOCAL_VARIABLE: {
1463 ir_mode *const mode = get_ir_mode(type);
1464 return get_value(declaration->v.value_number, mode);
1466 case DECLARATION_KIND_FUNCTION: {
1467 ir_mode *const mode = get_ir_mode(type);
1468 return create_symconst(dbgi, mode, declaration->v.entity);
1470 case DECLARATION_KIND_INNER_FUNCTION: {
1471 ir_mode *const mode = get_ir_mode(type);
1472 if (! declaration->goto_to_outer && !declaration->need_closure) {
1473 /* inner function not using the closure */
1474 return create_symconst(dbgi, mode, declaration->v.entity);
1476 /* TODO: need trampoline here */
1477 panic("Trampoline code not implemented");
1478 return create_symconst(dbgi, mode, declaration->v.entity);
1481 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1482 ir_node *const addr = get_global_var_address(dbgi, declaration);
1483 return deref_address(dbgi, declaration->type, addr);
1486 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1487 ir_entity *entity = declaration->v.entity;
1488 ir_node *frame = get_local_frame(entity);
1489 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1490 return deref_address(dbgi, declaration->type, sel);
1493 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1494 return declaration->v.vla_base;
1496 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1497 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1498 case DECLARATION_KIND_COMPOUND_MEMBER:
1499 case DECLARATION_KIND_LABEL_BLOCK:
1500 panic("not implemented reference type");
1503 panic("reference to declaration with unknown type found");
1506 static ir_node *reference_addr(const reference_expression_t *ref)
1508 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1509 declaration_t *declaration = ref->declaration;
1511 switch((declaration_kind_t) declaration->declaration_kind) {
1512 case DECLARATION_KIND_TYPE:
1513 case DECLARATION_KIND_UNKNOWN:
1515 case DECLARATION_KIND_LOCAL_VARIABLE:
1516 /* you can store to a local variable (so we don't panic but return NULL
1517 * as an indicator for no real address) */
1519 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1520 ir_node *const addr = get_global_var_address(dbgi, declaration);
1523 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1524 ir_entity *entity = declaration->v.entity;
1525 ir_node *frame = get_local_frame(entity);
1526 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1531 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1532 return declaration->v.vla_base;
1534 case DECLARATION_KIND_ENUM_ENTRY:
1535 panic("trying to reference enum entry");
1537 case DECLARATION_KIND_FUNCTION: {
1538 type_t *const type = skip_typeref(declaration->type);
1539 ir_mode *const mode = get_ir_mode(type);
1540 return create_symconst(dbgi, mode, declaration->v.entity);
1543 case DECLARATION_KIND_INNER_FUNCTION:
1544 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1545 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1546 case DECLARATION_KIND_COMPOUND_MEMBER:
1547 case DECLARATION_KIND_LABEL_BLOCK:
1548 panic("not implemented reference type");
1551 panic("reference to declaration with unknown type found");
1555 * Transform calls to builtin functions.
1557 static ir_node *process_builtin_call(const call_expression_t *call)
1559 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1561 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1562 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1564 type_t *type = skip_typeref(builtin->base.type);
1565 assert(is_type_pointer(type));
1567 type_t *function_type = skip_typeref(type->pointer.points_to);
1568 symbol_t *symbol = builtin->symbol;
1570 switch(symbol->ID) {
1571 case T___builtin_alloca: {
1572 if (call->arguments == NULL || call->arguments->next != NULL) {
1573 panic("invalid number of parameters on __builtin_alloca");
1575 expression_t *argument = call->arguments->expression;
1576 ir_node *size = expression_to_firm(argument);
1578 ir_node *store = get_store();
1579 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1581 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1583 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1588 case T___builtin_huge_val:
1589 case T___builtin_inf:
1590 case T___builtin_inff:
1591 case T___builtin_infl: {
1592 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1593 tarval *tv = get_mode_infinite(mode);
1594 ir_node *res = new_d_Const(dbgi, mode, tv);
1597 case T___builtin_nan:
1598 case T___builtin_nanf:
1599 case T___builtin_nanl: {
1600 /* Ignore string for now... */
1601 assert(is_type_function(function_type));
1602 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1603 tarval *tv = get_mode_NAN(mode);
1604 ir_node *res = new_d_Const(dbgi, mode, tv);
1607 case T___builtin_va_end:
1610 panic("Unsupported builtin found\n");
1615 * Transform a call expression.
1616 * Handles some special cases, like alloca() calls, which must be resolved
1617 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1618 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1621 static ir_node *call_expression_to_firm(const call_expression_t *call)
1623 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1624 assert(get_cur_block() != NULL);
1626 expression_t *function = call->function;
1627 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1628 return process_builtin_call(call);
1630 if (function->kind == EXPR_REFERENCE) {
1631 const reference_expression_t *ref = &function->reference;
1632 declaration_t *declaration = ref->declaration;
1634 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1635 if (declaration->v.entity == rts_entities[rts_alloca]) {
1636 /* handle alloca() call */
1637 expression_t *argument = call->arguments->expression;
1638 ir_node *size = expression_to_firm(argument);
1640 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1642 ir_node *store = get_store();
1643 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1644 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1646 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1648 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1654 ir_node *callee = expression_to_firm(function);
1656 type_t *type = skip_typeref(function->base.type);
1657 assert(is_type_pointer(type));
1658 pointer_type_t *pointer_type = &type->pointer;
1659 type_t *points_to = skip_typeref(pointer_type->points_to);
1660 assert(is_type_function(points_to));
1661 function_type_t *function_type = &points_to->function;
1663 int n_parameters = 0;
1664 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1665 ir_type *new_method_type = NULL;
1666 if (function_type->variadic || function_type->unspecified_parameters) {
1667 const call_argument_t *argument = call->arguments;
1668 for( ; argument != NULL; argument = argument->next) {
1672 /* we need to construct a new method type matching the call
1674 int n_res = get_method_n_ress(ir_method_type);
1675 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1676 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1677 n_parameters, n_res, dbgi);
1678 set_method_calling_convention(new_method_type,
1679 get_method_calling_convention(ir_method_type));
1680 set_method_additional_properties(new_method_type,
1681 get_method_additional_properties(ir_method_type));
1682 set_method_variadicity(new_method_type,
1683 get_method_variadicity(ir_method_type));
1685 for(int i = 0; i < n_res; ++i) {
1686 set_method_res_type(new_method_type, i,
1687 get_method_res_type(ir_method_type, i));
1689 argument = call->arguments;
1690 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1691 expression_t *expression = argument->expression;
1692 ir_type *irtype = get_ir_type(expression->base.type);
1693 set_method_param_type(new_method_type, i, irtype);
1695 ir_method_type = new_method_type;
1697 n_parameters = get_method_n_params(ir_method_type);
1700 ir_node *in[n_parameters];
1702 const call_argument_t *argument = call->arguments;
1703 for(int n = 0; n < n_parameters; ++n) {
1704 expression_t *expression = argument->expression;
1705 ir_node *arg_node = expression_to_firm(expression);
1707 arg_node = do_strict_conv(dbgi, arg_node);
1711 argument = argument->next;
1714 ir_node *store = get_store();
1715 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1717 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1720 type_t *return_type = skip_typeref(function_type->return_type);
1721 ir_node *result = NULL;
1723 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1725 if (is_type_scalar(return_type)) {
1726 mode = get_ir_mode(return_type);
1730 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1731 result = new_d_Proj(dbgi, resproj, mode, 0);
1734 if (function->kind == EXPR_REFERENCE &&
1735 function->reference.declaration->modifiers & DM_NORETURN) {
1736 /* A dead end: Keep the Call and the Block. Also place all further
1737 * nodes into a new and unreachable block. */
1739 keep_alive(get_cur_block());
1746 static void statement_to_firm(statement_t *statement);
1747 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1749 static ir_node *expression_to_addr(const expression_t *expression);
1750 static ir_node *create_condition_evaluation(const expression_t *expression,
1751 ir_node *true_block,
1752 ir_node *false_block);
1754 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1757 value = do_strict_conv(dbgi, value);
1759 ir_node *memory = get_store();
1761 if (is_type_scalar(type)) {
1762 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1763 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1764 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1765 set_Store_volatility(store, volatility_is_volatile);
1766 set_store(store_mem);
1768 ir_type *irtype = get_ir_type(type);
1769 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1770 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1771 set_store(copyb_mem);
1775 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1777 tarval *all_one = get_mode_all_one(mode);
1778 int mode_size = get_mode_size_bits(mode);
1780 assert(offset >= 0);
1782 assert(offset + size <= mode_size);
1783 if (size == mode_size) {
1787 long shiftr = get_mode_size_bits(mode) - size;
1788 long shiftl = offset;
1789 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1790 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1791 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1792 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1797 static void bitfield_store_to_firm(dbg_info *dbgi,
1798 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1800 ir_type *entity_type = get_entity_type(entity);
1801 ir_type *base_type = get_primitive_base_type(entity_type);
1802 assert(base_type != NULL);
1803 ir_mode *mode = get_type_mode(base_type);
1805 value = create_conv(dbgi, value, mode);
1807 /* kill upper bits of value and shift to right position */
1808 int bitoffset = get_entity_offset_bits_remainder(entity);
1809 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1811 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1812 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1813 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1814 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1815 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1816 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1818 /* load current value */
1819 ir_node *mem = get_store();
1820 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1821 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1822 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1823 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1824 tarval *inv_mask = tarval_not(shift_mask);
1825 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1826 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1828 /* construct new value and store */
1829 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1830 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1831 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1832 set_store(store_mem);
1835 set_Load_volatility(load, volatility_is_volatile);
1836 set_Store_volatility(store, volatility_is_volatile);
1840 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1843 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1844 type_t *type = expression->base.type;
1845 ir_mode *mode = get_ir_mode(type);
1846 ir_node *mem = get_store();
1847 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1848 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1849 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1851 load_res = create_conv(dbgi, load_res, mode_int);
1853 set_store(load_mem);
1855 /* kill upper bits */
1856 ir_entity *entity = expression->compound_entry->v.entity;
1857 int bitoffset = get_entity_offset_bits_remainder(entity);
1858 ir_type *entity_type = get_entity_type(entity);
1859 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1860 long shift_bitsl = machine_size - bitoffset - bitsize;
1861 assert(shift_bitsl >= 0);
1862 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1863 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1864 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1866 long shift_bitsr = bitoffset + shift_bitsl;
1867 assert(shift_bitsr <= (long) machine_size);
1868 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1869 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1871 if (mode_is_signed(mode)) {
1872 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1874 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1877 return create_conv(dbgi, shiftr, mode);
1880 static void set_value_for_expression_addr(const expression_t *expression,
1881 ir_node *value, ir_node *addr)
1883 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1884 value = do_strict_conv(dbgi, value);
1886 if (expression->kind == EXPR_REFERENCE) {
1887 const reference_expression_t *ref = &expression->reference;
1889 declaration_t *declaration = ref->declaration;
1890 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1891 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1892 set_value(declaration->v.value_number, value);
1898 addr = expression_to_addr(expression);
1900 type_t *type = skip_typeref(expression->base.type);
1902 if (expression->kind == EXPR_SELECT) {
1903 const select_expression_t *select = &expression->select;
1905 declaration_t *declaration = select->compound_entry;
1906 if (declaration->type->kind == TYPE_BITFIELD) {
1907 ir_entity *entity = select->compound_entry->v.entity;
1909 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1910 bitfield_store_to_firm(dbgi, entity, addr, value, set_volatile);
1915 assign_value(dbgi, addr, type, value);
1918 static void set_value_for_expression(const expression_t *expression,
1921 set_value_for_expression_addr(expression, value, NULL);
1924 static ir_node *get_value_from_lvalue(const expression_t *expression,
1927 if (expression->kind == EXPR_REFERENCE) {
1928 const reference_expression_t *ref = &expression->reference;
1930 declaration_t *declaration = ref->declaration;
1931 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1932 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1933 assert(addr == NULL);
1934 ir_mode *mode = get_ir_mode(expression->base.type);
1935 return get_value(declaration->v.value_number, mode);
1939 assert(addr != NULL);
1940 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1943 if (expression->kind == EXPR_SELECT &&
1944 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1945 value = bitfield_extract_to_firm(&expression->select, addr);
1947 value = deref_address(dbgi, expression->base.type, addr);
1954 static ir_node *create_incdec(const unary_expression_t *expression)
1956 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1957 const expression_t *value_expr = expression->value;
1958 ir_node *addr = expression_to_addr(value_expr);
1959 ir_node *value = get_value_from_lvalue(value_expr, addr);
1961 type_t *type = skip_typeref(expression->base.type);
1962 ir_mode *mode = get_ir_mode(expression->base.type);
1965 if (is_type_pointer(type)) {
1966 pointer_type_t *pointer_type = &type->pointer;
1967 offset = get_type_size(pointer_type->points_to);
1969 assert(is_type_arithmetic(type));
1970 offset = new_Const(mode, get_mode_one(mode));
1974 ir_node *store_value;
1975 switch(expression->base.kind) {
1976 case EXPR_UNARY_POSTFIX_INCREMENT:
1978 store_value = new_d_Add(dbgi, value, offset, mode);
1980 case EXPR_UNARY_POSTFIX_DECREMENT:
1982 store_value = new_d_Sub(dbgi, value, offset, mode);
1984 case EXPR_UNARY_PREFIX_INCREMENT:
1985 result = new_d_Add(dbgi, value, offset, mode);
1986 store_value = result;
1988 case EXPR_UNARY_PREFIX_DECREMENT:
1989 result = new_d_Sub(dbgi, value, offset, mode);
1990 store_value = result;
1993 panic("no incdec expr in create_incdec");
1996 set_value_for_expression_addr(value_expr, store_value, addr);
2001 static bool is_local_variable(expression_t *expression)
2003 if (expression->kind != EXPR_REFERENCE)
2005 reference_expression_t *ref_expr = &expression->reference;
2006 declaration_t *declaration = ref_expr->declaration;
2007 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
2010 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2013 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2014 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2015 case EXPR_BINARY_NOTEQUAL:
2016 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2017 case EXPR_BINARY_ISLESS:
2018 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2019 case EXPR_BINARY_ISLESSEQUAL:
2020 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2021 case EXPR_BINARY_ISGREATER:
2022 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2023 case EXPR_BINARY_ISGREATEREQUAL:
2024 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2025 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2030 panic("trying to get pn_Cmp from non-comparison binexpr type");
2034 * Handle the assume optimizer hint: check if a Confirm
2035 * node can be created.
2037 * @param dbi debug info
2038 * @param expr the IL assume expression
2040 * we support here only some simple cases:
2045 static ir_node *handle_assume_compare(dbg_info *dbi,
2046 const binary_expression_t *expression)
2048 expression_t *op1 = expression->left;
2049 expression_t *op2 = expression->right;
2050 declaration_t *var2, *var = NULL;
2051 ir_node *res = NULL;
2054 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2056 if (is_local_variable(op1) && is_local_variable(op2)) {
2057 var = op1->reference.declaration;
2058 var2 = op2->reference.declaration;
2060 type_t *const type = skip_typeref(var->type);
2061 ir_mode *const mode = get_ir_mode(type);
2063 ir_node *const irn1 = get_value(var->v.value_number, mode);
2064 ir_node *const irn2 = get_value(var2->v.value_number, mode);
2066 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2067 set_value(var2->v.value_number, res);
2069 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2070 set_value(var->v.value_number, res);
2076 if (is_local_variable(op1) && is_constant_expression(op2)) {
2077 var = op1->reference.declaration;
2079 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2080 cmp_val = get_inversed_pnc(cmp_val);
2081 var = op2->reference.declaration;
2086 type_t *const type = skip_typeref(var->type);
2087 ir_mode *const mode = get_ir_mode(type);
2089 res = get_value(var->v.value_number, mode);
2090 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2091 set_value(var->v.value_number, res);
2097 * Handle the assume optimizer hint.
2099 * @param dbi debug info
2100 * @param expr the IL assume expression
2102 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2103 switch(expression->kind) {
2104 case EXPR_BINARY_EQUAL:
2105 case EXPR_BINARY_NOTEQUAL:
2106 case EXPR_BINARY_LESS:
2107 case EXPR_BINARY_LESSEQUAL:
2108 case EXPR_BINARY_GREATER:
2109 case EXPR_BINARY_GREATEREQUAL:
2110 return handle_assume_compare(dbi, &expression->binary);
2116 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2118 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2119 type_t *type = skip_typeref(expression->base.type);
2121 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2122 return expression_to_addr(expression->value);
2124 const expression_t *value = expression->value;
2126 switch(expression->base.kind) {
2127 case EXPR_UNARY_NEGATE: {
2128 ir_node *value_node = expression_to_firm(value);
2129 ir_mode *mode = get_ir_mode(type);
2130 return new_d_Minus(dbgi, value_node, mode);
2132 case EXPR_UNARY_PLUS:
2133 return expression_to_firm(value);
2134 case EXPR_UNARY_BITWISE_NEGATE: {
2135 ir_node *value_node = expression_to_firm(value);
2136 ir_mode *mode = get_ir_mode(type);
2137 return new_d_Not(dbgi, value_node, mode);
2139 case EXPR_UNARY_NOT: {
2140 ir_node *value_node = _expression_to_firm(value);
2141 value_node = create_conv(dbgi, value_node, mode_b);
2142 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2145 case EXPR_UNARY_DEREFERENCE: {
2146 ir_node *value_node = expression_to_firm(value);
2147 type_t *value_type = skip_typeref(value->base.type);
2148 assert(is_type_pointer(value_type));
2149 type_t *points_to = value_type->pointer.points_to;
2150 return deref_address(dbgi, points_to, value_node);
2152 case EXPR_UNARY_POSTFIX_INCREMENT:
2153 case EXPR_UNARY_POSTFIX_DECREMENT:
2154 case EXPR_UNARY_PREFIX_INCREMENT:
2155 case EXPR_UNARY_PREFIX_DECREMENT:
2156 return create_incdec(expression);
2157 case EXPR_UNARY_CAST: {
2158 ir_node *value_node = expression_to_firm(value);
2159 if (is_type_scalar(type)) {
2160 ir_mode *mode = get_ir_mode(type);
2161 ir_node *node = create_conv(dbgi, value_node, mode);
2162 node = do_strict_conv(dbgi, node);
2165 /* make sure firm type is constructed */
2166 (void) get_ir_type(type);
2170 case EXPR_UNARY_CAST_IMPLICIT: {
2171 ir_node *value_node = expression_to_firm(value);
2172 if (is_type_scalar(type)) {
2173 ir_mode *mode = get_ir_mode(type);
2174 return create_conv(dbgi, value_node, mode);
2179 case EXPR_UNARY_ASSUME:
2180 if (firm_opt.confirm)
2181 return handle_assume(dbgi, value);
2188 panic("invalid UNEXPR type found");
2192 * produces a 0/1 depending of the value of a mode_b node
2194 static ir_node *produce_condition_result(const expression_t *expression,
2197 ir_mode *mode = get_ir_mode(expression->base.type);
2198 ir_node *cur_block = get_cur_block();
2200 ir_node *one_block = new_immBlock();
2201 ir_node *one = new_Const(mode, get_mode_one(mode));
2202 ir_node *jmp_one = new_d_Jmp(dbgi);
2204 ir_node *zero_block = new_immBlock();
2205 ir_node *zero = new_Const(mode, get_mode_null(mode));
2206 ir_node *jmp_zero = new_d_Jmp(dbgi);
2208 set_cur_block(cur_block);
2209 create_condition_evaluation(expression, one_block, zero_block);
2210 mature_immBlock(one_block);
2211 mature_immBlock(zero_block);
2213 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2214 new_Block(2, in_cf);
2216 ir_node *in[2] = { one, zero };
2217 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2222 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2223 ir_node *value, type_t *type)
2225 pointer_type_t *const pointer_type = &type->pointer;
2226 type_t *const points_to = skip_typeref(pointer_type->points_to);
2227 unsigned elem_size = get_type_size_const(points_to);
2229 /* gcc extension: allow arithmetic with void * and function * */
2230 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2231 is_type_function(points_to)) {
2235 assert(elem_size >= 1);
2239 value = create_conv(dbgi, value, mode_int);
2240 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2241 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2245 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2246 ir_node *left, ir_node *right)
2249 type_t *type_left = skip_typeref(expression->left->base.type);
2250 type_t *type_right = skip_typeref(expression->right->base.type);
2252 expression_kind_t kind = expression->base.kind;
2255 case EXPR_BINARY_SHIFTLEFT:
2256 case EXPR_BINARY_SHIFTRIGHT:
2257 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2258 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2259 mode = get_irn_mode(left);
2260 right = create_conv(dbgi, right, mode_uint);
2263 case EXPR_BINARY_SUB:
2264 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2265 const pointer_type_t *const ptr_type = &type_left->pointer;
2267 mode = get_ir_mode(expression->base.type);
2268 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2269 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2270 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2271 ir_node *const no_mem = new_NoMem();
2272 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2273 mode, op_pin_state_floats);
2274 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2277 case EXPR_BINARY_SUB_ASSIGN:
2278 if (is_type_pointer(type_left)) {
2279 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2280 mode = get_ir_mode(type_left);
2285 case EXPR_BINARY_ADD:
2286 case EXPR_BINARY_ADD_ASSIGN:
2287 if (is_type_pointer(type_left)) {
2288 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2289 mode = get_ir_mode(type_left);
2291 } else if (is_type_pointer(type_right)) {
2292 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2293 mode = get_ir_mode(type_right);
2300 mode = get_irn_mode(right);
2301 left = create_conv(dbgi, left, mode);
2306 case EXPR_BINARY_ADD_ASSIGN:
2307 case EXPR_BINARY_ADD:
2308 return new_d_Add(dbgi, left, right, mode);
2309 case EXPR_BINARY_SUB_ASSIGN:
2310 case EXPR_BINARY_SUB:
2311 return new_d_Sub(dbgi, left, right, mode);
2312 case EXPR_BINARY_MUL_ASSIGN:
2313 case EXPR_BINARY_MUL:
2314 return new_d_Mul(dbgi, left, right, mode);
2315 case EXPR_BINARY_BITWISE_AND:
2316 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2317 return new_d_And(dbgi, left, right, mode);
2318 case EXPR_BINARY_BITWISE_OR:
2319 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2320 return new_d_Or(dbgi, left, right, mode);
2321 case EXPR_BINARY_BITWISE_XOR:
2322 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2323 return new_d_Eor(dbgi, left, right, mode);
2324 case EXPR_BINARY_SHIFTLEFT:
2325 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2326 return new_d_Shl(dbgi, left, right, mode);
2327 case EXPR_BINARY_SHIFTRIGHT:
2328 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2329 if (mode_is_signed(mode)) {
2330 return new_d_Shrs(dbgi, left, right, mode);
2332 return new_d_Shr(dbgi, left, right, mode);
2334 case EXPR_BINARY_DIV:
2335 case EXPR_BINARY_DIV_ASSIGN: {
2336 ir_node *pin = new_Pin(new_NoMem());
2339 if (mode_is_float(mode)) {
2340 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2341 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2343 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2344 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2348 case EXPR_BINARY_MOD:
2349 case EXPR_BINARY_MOD_ASSIGN: {
2350 ir_node *pin = new_Pin(new_NoMem());
2351 assert(!mode_is_float(mode));
2352 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2353 op_pin_state_floats);
2354 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2358 panic("unexpected expression kind");
2362 static ir_node *create_lazy_op(const binary_expression_t *expression)
2364 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2365 type_t *type = expression->base.type;
2366 ir_mode *mode = get_ir_mode(type);
2368 if (is_constant_expression(expression->left)) {
2369 long val = fold_constant(expression->left);
2370 expression_kind_t ekind = expression->base.kind;
2371 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2372 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2373 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2374 return expression_to_firm(expression->right);
2376 return new_Const(mode, get_mode_one(mode));
2380 return produce_condition_result((const expression_t*) expression, dbgi);
2383 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2384 ir_node *right, ir_mode *mode);
2386 static ir_node *create_assign_binop(const binary_expression_t *expression)
2388 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2389 const expression_t *left_expr = expression->left;
2390 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2391 ir_node *right = expression_to_firm(expression->right);
2392 ir_node *left_addr = expression_to_addr(left_expr);
2393 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2394 ir_node *result = create_op(dbgi, expression, left, right);
2396 result = create_conv(dbgi, result, left_mode);
2397 result = do_strict_conv(dbgi, result);
2399 set_value_for_expression_addr(left_expr, result, left_addr);
2404 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2406 expression_kind_t kind = expression->base.kind;
2409 case EXPR_BINARY_EQUAL:
2410 case EXPR_BINARY_NOTEQUAL:
2411 case EXPR_BINARY_LESS:
2412 case EXPR_BINARY_LESSEQUAL:
2413 case EXPR_BINARY_GREATER:
2414 case EXPR_BINARY_GREATEREQUAL:
2415 case EXPR_BINARY_ISGREATER:
2416 case EXPR_BINARY_ISGREATEREQUAL:
2417 case EXPR_BINARY_ISLESS:
2418 case EXPR_BINARY_ISLESSEQUAL:
2419 case EXPR_BINARY_ISLESSGREATER:
2420 case EXPR_BINARY_ISUNORDERED: {
2421 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2422 ir_node *left = expression_to_firm(expression->left);
2423 ir_node *right = expression_to_firm(expression->right);
2424 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2425 long pnc = get_pnc(kind, expression->left->base.type);
2426 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2429 case EXPR_BINARY_ASSIGN: {
2430 ir_node *addr = expression_to_addr(expression->left);
2431 ir_node *right = expression_to_firm(expression->right);
2432 set_value_for_expression_addr(expression->left, right, addr);
2436 case EXPR_BINARY_ADD:
2437 case EXPR_BINARY_SUB:
2438 case EXPR_BINARY_MUL:
2439 case EXPR_BINARY_DIV:
2440 case EXPR_BINARY_MOD:
2441 case EXPR_BINARY_BITWISE_AND:
2442 case EXPR_BINARY_BITWISE_OR:
2443 case EXPR_BINARY_BITWISE_XOR:
2444 case EXPR_BINARY_SHIFTLEFT:
2445 case EXPR_BINARY_SHIFTRIGHT:
2447 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2448 ir_node *left = expression_to_firm(expression->left);
2449 ir_node *right = expression_to_firm(expression->right);
2450 return create_op(dbgi, expression, left, right);
2452 case EXPR_BINARY_LOGICAL_AND:
2453 case EXPR_BINARY_LOGICAL_OR:
2454 return create_lazy_op(expression);
2455 case EXPR_BINARY_COMMA:
2456 /* create side effects of left side */
2457 (void) expression_to_firm(expression->left);
2458 return _expression_to_firm(expression->right);
2460 case EXPR_BINARY_ADD_ASSIGN:
2461 case EXPR_BINARY_SUB_ASSIGN:
2462 case EXPR_BINARY_MUL_ASSIGN:
2463 case EXPR_BINARY_MOD_ASSIGN:
2464 case EXPR_BINARY_DIV_ASSIGN:
2465 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2466 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2467 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2468 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2469 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2470 return create_assign_binop(expression);
2471 case EXPR_BINARY_BUILTIN_EXPECT:
2472 return _expression_to_firm(expression->left);
2474 panic("TODO binexpr type");
2478 static ir_node *array_access_addr(const array_access_expression_t *expression)
2480 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2481 ir_node *base_addr = expression_to_firm(expression->array_ref);
2482 ir_node *offset = expression_to_firm(expression->index);
2484 type_t *offset_type = skip_typeref(expression->index->base.type);
2486 if (is_type_signed(offset_type)) {
2487 mode = get_ir_mode(type_ssize_t);
2489 mode = get_ir_mode(type_size_t);
2491 offset = create_conv(dbgi, offset, mode);
2493 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2494 assert(is_type_pointer(ref_type));
2495 pointer_type_t *pointer_type = &ref_type->pointer;
2497 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2498 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2499 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2501 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2506 static ir_node *array_access_to_firm(
2507 const array_access_expression_t *expression)
2509 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2510 ir_node *addr = array_access_addr(expression);
2511 type_t *type = revert_automatic_type_conversion(
2512 (const expression_t*) expression);
2513 type = skip_typeref(type);
2515 return deref_address(dbgi, type, addr);
2518 static long get_offsetof_offset(const offsetof_expression_t *expression)
2520 type_t *orig_type = expression->type;
2523 designator_t *designator = expression->designator;
2524 for( ; designator != NULL; designator = designator->next) {
2525 type_t *type = skip_typeref(orig_type);
2526 /* be sure the type is constructed */
2527 (void) get_ir_type(type);
2529 if (designator->symbol != NULL) {
2530 assert(is_type_compound(type));
2531 symbol_t *symbol = designator->symbol;
2533 declaration_t *declaration = type->compound.declaration;
2534 declaration_t *iter = declaration->scope.declarations;
2535 for( ; iter != NULL; iter = iter->next) {
2536 if (iter->symbol == symbol) {
2540 assert(iter != NULL);
2542 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2543 offset += get_entity_offset(iter->v.entity);
2545 orig_type = iter->type;
2547 expression_t *array_index = designator->array_index;
2548 assert(designator->array_index != NULL);
2549 assert(is_type_array(type));
2551 long index = fold_constant(array_index);
2552 ir_type *arr_type = get_ir_type(type);
2553 ir_type *elem_type = get_array_element_type(arr_type);
2554 long elem_size = get_type_size_bytes(elem_type);
2556 offset += index * elem_size;
2558 orig_type = type->array.element_type;
2565 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2567 ir_mode *mode = get_ir_mode(expression->base.type);
2568 long offset = get_offsetof_offset(expression);
2569 tarval *tv = new_tarval_from_long(offset, mode);
2570 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2572 return new_d_Const(dbgi, mode, tv);
2575 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2576 ir_entity *entity, type_t *type);
2578 static ir_node *compound_literal_to_firm(
2579 const compound_literal_expression_t *expression)
2581 type_t *type = expression->type;
2583 /* create an entity on the stack */
2584 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2586 ident *const id = id_unique("CompLit.%u");
2587 ir_type *const irtype = get_ir_type(type);
2588 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2589 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2590 set_entity_ld_ident(entity, id);
2592 set_entity_variability(entity, variability_uninitialized);
2594 /* create initialisation code */
2595 initializer_t *initializer = expression->initializer;
2596 create_local_initializer(initializer, dbgi, entity, type);
2598 /* create a sel for the compound literal address */
2599 ir_node *frame = get_local_frame(entity);
2600 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2605 * Transform a sizeof expression into Firm code.
2607 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2609 type_t *type = expression->type;
2611 type = expression->tp_expression->base.type;
2612 assert(type != NULL);
2615 type = skip_typeref(type);
2616 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2617 if (is_type_array(type) && type->array.is_vla
2618 && expression->tp_expression != NULL) {
2619 expression_to_firm(expression->tp_expression);
2622 return get_type_size(type);
2626 * Transform an alignof expression into Firm code.
2628 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2630 type_t *type = expression->type;
2632 /* beware: if expression is a variable reference, return the
2633 alignment of the variable. */
2634 const expression_t *tp_expression = expression->tp_expression;
2635 const declaration_t *declaration = expr_is_variable(tp_expression);
2636 if (declaration != NULL) {
2637 /* TODO: get the alignment of this variable. */
2639 type = tp_expression->base.type;
2640 assert(type != NULL);
2643 ir_mode *const mode = get_ir_mode(expression->base.type);
2644 symconst_symbol sym;
2645 sym.type_p = get_ir_type(type);
2646 return new_SymConst(mode, sym, symconst_type_align);
2649 static void init_ir_types(void);
2651 long fold_constant(const expression_t *expression)
2653 assert(is_type_valid(skip_typeref(expression->base.type)));
2655 bool constant_folding_old = constant_folding;
2656 constant_folding = true;
2660 assert(is_constant_expression(expression));
2662 ir_graph *old_current_ir_graph = current_ir_graph;
2663 if (current_ir_graph == NULL) {
2664 current_ir_graph = get_const_code_irg();
2667 ir_node *cnst = expression_to_firm(expression);
2668 current_ir_graph = old_current_ir_graph;
2670 if (!is_Const(cnst)) {
2671 panic("couldn't fold constant\n");
2674 tarval *tv = get_Const_tarval(cnst);
2675 if (!tarval_is_long(tv)) {
2676 panic("result of constant folding is not integer\n");
2679 constant_folding = constant_folding_old;
2681 return get_tarval_long(tv);
2684 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2686 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2688 /* first try to fold a constant condition */
2689 if (is_constant_expression(expression->condition)) {
2690 long val = fold_constant(expression->condition);
2692 expression_t *true_expression = expression->true_expression;
2693 if (true_expression == NULL)
2694 true_expression = expression->condition;
2695 return expression_to_firm(true_expression);
2697 return expression_to_firm(expression->false_expression);
2701 ir_node *cur_block = get_cur_block();
2703 /* create the true block */
2704 ir_node *true_block = new_immBlock();
2706 ir_node *true_val = expression->true_expression != NULL ?
2707 expression_to_firm(expression->true_expression) : NULL;
2708 ir_node *true_jmp = new_Jmp();
2710 /* create the false block */
2711 ir_node *false_block = new_immBlock();
2713 ir_node *false_val = expression_to_firm(expression->false_expression);
2714 ir_node *false_jmp = new_Jmp();
2716 /* create the condition evaluation */
2717 set_cur_block(cur_block);
2718 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2719 if (expression->true_expression == NULL) {
2720 if (cond_expr != NULL) {
2721 true_val = cond_expr;
2723 /* Condition ended with a short circuit (&&, ||, !) operation.
2724 * Generate a "1" as value for the true branch. */
2725 ir_mode *const mode = mode_Is;
2726 true_val = new_Const(mode, get_mode_one(mode));
2729 mature_immBlock(true_block);
2730 mature_immBlock(false_block);
2732 /* create the common block */
2733 ir_node *in_cf[2] = { true_jmp, false_jmp };
2734 new_Block(2, in_cf);
2736 /* TODO improve static semantics, so either both or no values are NULL */
2737 if (true_val == NULL || false_val == NULL)
2740 ir_node *in[2] = { true_val, false_val };
2741 ir_mode *mode = get_irn_mode(true_val);
2742 assert(get_irn_mode(false_val) == mode);
2743 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2749 * Returns an IR-node representing the address of a field.
2751 static ir_node *select_addr(const select_expression_t *expression)
2753 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2755 ir_node *compound_addr = expression_to_firm(expression->compound);
2757 /* make sure the type is constructed */
2758 type_t *type = skip_typeref(expression->compound->base.type);
2759 if (is_type_pointer(type)) {
2760 type = type->pointer.points_to;
2762 (void) get_ir_type(type);
2764 declaration_t *entry = expression->compound_entry;
2765 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2766 ir_entity *entity = entry->v.entity;
2768 assert(entity != NULL);
2770 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2775 static ir_node *select_to_firm(const select_expression_t *expression)
2777 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2778 ir_node *addr = select_addr(expression);
2779 type_t *type = revert_automatic_type_conversion(
2780 (const expression_t*) expression);
2781 type = skip_typeref(type);
2783 declaration_t *entry = expression->compound_entry;
2784 type_t *entry_type = skip_typeref(entry->type);
2786 if (entry_type->kind == TYPE_BITFIELD) {
2787 return bitfield_extract_to_firm(expression, addr);
2790 return deref_address(dbgi, type, addr);
2793 /* Values returned by __builtin_classify_type. */
2794 typedef enum gcc_type_class
2800 enumeral_type_class,
2803 reference_type_class,
2807 function_type_class,
2818 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2820 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2826 const atomic_type_t *const atomic_type = &type->atomic;
2827 switch (atomic_type->akind) {
2828 /* should not be reached */
2829 case ATOMIC_TYPE_INVALID:
2833 /* gcc cannot do that */
2834 case ATOMIC_TYPE_VOID:
2835 tc = void_type_class;
2838 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2839 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2840 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2841 case ATOMIC_TYPE_SHORT:
2842 case ATOMIC_TYPE_USHORT:
2843 case ATOMIC_TYPE_INT:
2844 case ATOMIC_TYPE_UINT:
2845 case ATOMIC_TYPE_LONG:
2846 case ATOMIC_TYPE_ULONG:
2847 case ATOMIC_TYPE_LONGLONG:
2848 case ATOMIC_TYPE_ULONGLONG:
2849 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2850 tc = integer_type_class;
2853 case ATOMIC_TYPE_FLOAT:
2854 case ATOMIC_TYPE_DOUBLE:
2855 case ATOMIC_TYPE_LONG_DOUBLE:
2856 tc = real_type_class;
2859 panic("Unexpected atomic type in classify_type_to_firm().");
2862 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2863 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2864 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2865 case TYPE_ARRAY: /* gcc handles this as pointer */
2866 case TYPE_FUNCTION: /* gcc handles this as pointer */
2867 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2868 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2869 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2871 /* gcc handles this as integer */
2872 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2875 /* typedef/typeof should be skipped already */
2882 panic("unexpected TYPE classify_type_to_firm().");
2885 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2886 ir_mode *const mode = mode_int;
2887 tarval *const tv = new_tarval_from_long(tc, mode);
2888 return new_d_Const(dbgi, mode, tv);
2891 static ir_node *function_name_to_firm(
2892 const funcname_expression_t *const expr)
2894 switch(expr->kind) {
2895 case FUNCNAME_FUNCTION:
2896 case FUNCNAME_PRETTY_FUNCTION:
2897 case FUNCNAME_FUNCDNAME:
2898 if (current_function_name == NULL) {
2899 const source_position_t *const src_pos = &expr->base.source_position;
2900 const char *const name = current_function_decl->symbol->string;
2901 const string_t string = { name, strlen(name) + 1 };
2902 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2904 return current_function_name;
2905 case FUNCNAME_FUNCSIG:
2906 if (current_funcsig == NULL) {
2907 const source_position_t *const src_pos = &expr->base.source_position;
2908 ir_entity *ent = get_irg_entity(current_ir_graph);
2909 const char *const name = get_entity_ld_name(ent);
2910 const string_t string = { name, strlen(name) + 1 };
2911 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2913 return current_funcsig;
2915 panic("Unsupported function name");
2918 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2920 statement_t *statement = expr->statement;
2922 assert(statement->kind == STATEMENT_COMPOUND);
2923 return compound_statement_to_firm(&statement->compound);
2926 static ir_node *va_start_expression_to_firm(
2927 const va_start_expression_t *const expr)
2929 ir_type *const method_type = get_ir_type(current_function_decl->type);
2930 int const n = get_method_n_params(method_type) - 1;
2931 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2932 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2933 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2934 ir_node *const no_mem = new_NoMem();
2935 ir_node *const arg_sel =
2936 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2938 ir_node *const cnst = get_type_size(expr->parameter->type);
2939 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2940 set_value_for_expression(expr->ap, add);
2945 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2947 type_t *const type = expr->base.type;
2948 expression_t *const ap_expr = expr->ap;
2949 ir_node *const ap_addr = expression_to_addr(ap_expr);
2950 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2951 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2952 ir_node *const res = deref_address(dbgi, type, ap);
2954 ir_node *const cnst = get_type_size(expr->base.type);
2955 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2957 set_value_for_expression_addr(ap_expr, add, ap_addr);
2962 static ir_node *dereference_addr(const unary_expression_t *const expression)
2964 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2965 return expression_to_firm(expression->value);
2969 * Returns a IR-node representing an lvalue of the given expression.
2971 static ir_node *expression_to_addr(const expression_t *expression)
2973 switch(expression->kind) {
2974 case EXPR_REFERENCE:
2975 return reference_addr(&expression->reference);
2976 case EXPR_ARRAY_ACCESS:
2977 return array_access_addr(&expression->array_access);
2979 return select_addr(&expression->select);
2981 return call_expression_to_firm(&expression->call);
2982 case EXPR_UNARY_DEREFERENCE: {
2983 return dereference_addr(&expression->unary);
2988 panic("trying to get address of non-lvalue");
2991 static ir_node *builtin_constant_to_firm(
2992 const builtin_constant_expression_t *expression)
2994 ir_mode *mode = get_ir_mode(expression->base.type);
2997 if (is_constant_expression(expression->value)) {
3002 return new_Const_long(mode, v);
3005 static ir_node *builtin_prefetch_to_firm(
3006 const builtin_prefetch_expression_t *expression)
3008 ir_node *adr = expression_to_firm(expression->adr);
3009 /* no Firm support for prefetch yet */
3014 static ir_node *get_label_block(declaration_t *label)
3016 assert(label->namespc == NAMESPACE_LABEL || label->namespc == NAMESPACE_LOCAL_LABEL);
3018 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
3019 return label->v.block;
3021 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
3023 /* beware: might be called from create initializer with current_ir_graph
3024 * set to const_code_irg. */
3025 ir_graph *rem = current_ir_graph;
3026 current_ir_graph = current_function;
3028 ir_node *old_cur_block = get_cur_block();
3029 ir_node *block = new_immBlock();
3030 set_cur_block(old_cur_block);
3032 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
3033 label->v.block = block;
3035 ARR_APP1(declaration_t *, all_labels, label);
3037 current_ir_graph = rem;
3042 * Pointer to a label. This is used for the
3043 * GNU address-of-label extension.
3045 static ir_node *label_address_to_firm(
3046 const label_address_expression_t *label)
3048 ir_node *block = get_label_block(label->declaration);
3049 ir_label_t nr = get_Block_label(block);
3052 nr = get_irp_next_label_nr();
3053 set_Block_label(block, nr);
3055 symconst_symbol value;
3057 return new_SymConst(mode_P_code, value, symconst_label);
3061 * creates firm nodes for an expression. The difference between this function
3062 * and expression_to_firm is, that this version might produce mode_b nodes
3063 * instead of mode_Is.
3065 static ir_node *_expression_to_firm(const expression_t *expression)
3068 if (!constant_folding) {
3069 assert(!expression->base.transformed);
3070 ((expression_t*) expression)->base.transformed = true;
3074 switch (expression->kind) {
3075 case EXPR_CHARACTER_CONSTANT:
3076 return character_constant_to_firm(&expression->conste);
3077 case EXPR_WIDE_CHARACTER_CONSTANT:
3078 return wide_character_constant_to_firm(&expression->conste);
3080 return const_to_firm(&expression->conste);
3081 case EXPR_STRING_LITERAL:
3082 return string_literal_to_firm(&expression->string);
3083 case EXPR_WIDE_STRING_LITERAL:
3084 return wide_string_literal_to_firm(&expression->wide_string);
3085 case EXPR_REFERENCE:
3086 return reference_expression_to_firm(&expression->reference);
3088 return call_expression_to_firm(&expression->call);
3090 return unary_expression_to_firm(&expression->unary);
3092 return binary_expression_to_firm(&expression->binary);
3093 case EXPR_ARRAY_ACCESS:
3094 return array_access_to_firm(&expression->array_access);
3096 return sizeof_to_firm(&expression->typeprop);
3098 return alignof_to_firm(&expression->typeprop);
3099 case EXPR_CONDITIONAL:
3100 return conditional_to_firm(&expression->conditional);
3102 return select_to_firm(&expression->select);
3103 case EXPR_CLASSIFY_TYPE:
3104 return classify_type_to_firm(&expression->classify_type);
3106 return function_name_to_firm(&expression->funcname);
3107 case EXPR_STATEMENT:
3108 return statement_expression_to_firm(&expression->statement);
3110 return va_start_expression_to_firm(&expression->va_starte);
3112 return va_arg_expression_to_firm(&expression->va_arge);
3113 case EXPR_BUILTIN_SYMBOL:
3114 panic("unimplemented expression found");
3115 case EXPR_BUILTIN_CONSTANT_P:
3116 return builtin_constant_to_firm(&expression->builtin_constant);
3117 case EXPR_BUILTIN_PREFETCH:
3118 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3120 return offsetof_to_firm(&expression->offsetofe);
3121 case EXPR_COMPOUND_LITERAL:
3122 return compound_literal_to_firm(&expression->compound_literal);
3123 case EXPR_LABEL_ADDRESS:
3124 return label_address_to_firm(&expression->label_address);
3130 panic("invalid expression found");
3133 static bool produces_mode_b(const expression_t *expression)
3135 switch (expression->kind) {
3136 case EXPR_BINARY_EQUAL:
3137 case EXPR_BINARY_NOTEQUAL:
3138 case EXPR_BINARY_LESS:
3139 case EXPR_BINARY_LESSEQUAL:
3140 case EXPR_BINARY_GREATER:
3141 case EXPR_BINARY_GREATEREQUAL:
3142 case EXPR_BINARY_ISGREATER:
3143 case EXPR_BINARY_ISGREATEREQUAL:
3144 case EXPR_BINARY_ISLESS:
3145 case EXPR_BINARY_ISLESSEQUAL:
3146 case EXPR_BINARY_ISLESSGREATER:
3147 case EXPR_BINARY_ISUNORDERED:
3148 case EXPR_UNARY_NOT:
3151 case EXPR_BINARY_BUILTIN_EXPECT:
3152 return produces_mode_b(expression->binary.left);
3153 case EXPR_BINARY_COMMA:
3154 return produces_mode_b(expression->binary.right);
3161 static ir_node *expression_to_firm(const expression_t *expression)
3163 if (!produces_mode_b(expression)) {
3164 ir_node *res = _expression_to_firm(expression);
3165 assert(res == NULL || get_irn_mode(res) != mode_b);
3169 if (is_constant_expression(expression)) {
3170 ir_node *res = _expression_to_firm(expression);
3171 ir_mode *mode = get_ir_mode(expression->base.type);
3172 assert(is_Const(res));
3173 if (is_Const_null(res)) {
3174 return new_Const_long(mode, 0);
3176 return new_Const_long(mode, 1);
3180 /* we have to produce a 0/1 from the mode_b expression */
3181 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3182 return produce_condition_result(expression, dbgi);
3186 * create a short-circuit expression evaluation that tries to construct
3187 * efficient control flow structures for &&, || and ! expressions
3189 static ir_node *create_condition_evaluation(const expression_t *expression,
3190 ir_node *true_block,
3191 ir_node *false_block)
3193 switch(expression->kind) {
3194 case EXPR_UNARY_NOT: {
3195 const unary_expression_t *unary_expression = &expression->unary;
3196 create_condition_evaluation(unary_expression->value, false_block,
3200 case EXPR_BINARY_LOGICAL_AND: {
3201 const binary_expression_t *binary_expression = &expression->binary;
3203 ir_node *cur_block = get_cur_block();
3204 ir_node *extra_block = new_immBlock();
3205 set_cur_block(cur_block);
3206 create_condition_evaluation(binary_expression->left, extra_block,
3208 mature_immBlock(extra_block);
3209 set_cur_block(extra_block);
3210 create_condition_evaluation(binary_expression->right, true_block,
3214 case EXPR_BINARY_LOGICAL_OR: {
3215 const binary_expression_t *binary_expression = &expression->binary;
3217 ir_node *cur_block = get_cur_block();
3218 ir_node *extra_block = new_immBlock();
3219 set_cur_block(cur_block);
3220 create_condition_evaluation(binary_expression->left, true_block,
3222 mature_immBlock(extra_block);
3223 set_cur_block(extra_block);
3224 create_condition_evaluation(binary_expression->right, true_block,
3232 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3233 ir_node *cond_expr = _expression_to_firm(expression);
3234 ir_node *condition = create_conv(NULL, cond_expr, mode_b);
3235 ir_node *cond = new_d_Cond(dbgi, condition);
3236 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3237 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3239 /* set branch prediction info based on __builtin_expect */
3240 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3241 long cnst = fold_constant(expression->binary.right);
3242 cond_jmp_predicate pred;
3245 pred = COND_JMP_PRED_FALSE;
3247 pred = COND_JMP_PRED_TRUE;
3249 set_Cond_jmp_pred(cond, pred);
3252 add_immBlock_pred(true_block, true_proj);
3253 if (false_block != NULL) {
3254 add_immBlock_pred(false_block, false_proj);
3257 set_cur_block(NULL);
3263 static void create_declaration_entity(declaration_t *declaration,
3264 declaration_kind_t declaration_kind,
3265 ir_type *parent_type)
3267 type_t *const type = skip_typeref(declaration->type);
3268 if (is_type_function(type)) {
3269 (void) get_function_entity(declaration);
3273 ident *const id = new_id_from_str(declaration->symbol->string);
3274 ir_type *const irtype = get_ir_type(type);
3275 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3276 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3278 handle_gnu_attributes_ent(entity, declaration);
3280 declaration->declaration_kind = (unsigned char) declaration_kind;
3281 declaration->v.entity = entity;
3282 set_entity_variability(entity, variability_uninitialized);
3283 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3284 if (parent_type == get_tls_type())
3285 set_entity_allocation(entity, allocation_automatic);
3286 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3287 set_entity_allocation(entity, allocation_static);
3289 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3290 set_entity_volatility(entity, volatility_is_volatile);
3295 typedef struct type_path_entry_t type_path_entry_t;
3296 struct type_path_entry_t {
3298 ir_initializer_t *initializer;
3300 declaration_t *compound_entry;
3303 typedef struct type_path_t type_path_t;
3304 struct type_path_t {
3305 type_path_entry_t *path;
3310 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3312 size_t len = ARR_LEN(path->path);
3314 for(size_t i = 0; i < len; ++i) {
3315 const type_path_entry_t *entry = & path->path[i];
3317 type_t *type = skip_typeref(entry->type);
3318 if (is_type_compound(type)) {
3319 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3320 } else if (is_type_array(type)) {
3321 fprintf(stderr, "[%zd]", entry->index);
3323 fprintf(stderr, "-INVALID-");
3326 fprintf(stderr, " (");
3327 print_type(path->top_type);
3328 fprintf(stderr, ")");
3331 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3333 size_t len = ARR_LEN(path->path);
3335 return & path->path[len-1];
3338 static type_path_entry_t *append_to_type_path(type_path_t *path)
3340 size_t len = ARR_LEN(path->path);
3341 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3343 type_path_entry_t *result = & path->path[len];
3344 memset(result, 0, sizeof(result[0]));
3348 static size_t get_compound_size(const compound_type_t *type)
3350 declaration_t *declaration = type->declaration;
3351 declaration_t *member = declaration->scope.declarations;
3353 for( ; member != NULL; member = member->next) {
3356 /* TODO: cache results? */
3361 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3363 type_t *orig_top_type = path->top_type;
3364 type_t *top_type = skip_typeref(orig_top_type);
3366 assert(is_type_compound(top_type) || is_type_array(top_type));
3368 if (ARR_LEN(path->path) == 0) {
3371 type_path_entry_t *top = get_type_path_top(path);
3372 ir_initializer_t *initializer = top->initializer;
3373 return get_initializer_compound_value(initializer, top->index);
3377 static void descend_into_subtype(type_path_t *path)
3379 type_t *orig_top_type = path->top_type;
3380 type_t *top_type = skip_typeref(orig_top_type);
3382 assert(is_type_compound(top_type) || is_type_array(top_type));
3384 ir_initializer_t *initializer = get_initializer_entry(path);
3386 type_path_entry_t *top = append_to_type_path(path);
3387 top->type = top_type;
3391 if (is_type_compound(top_type)) {
3392 declaration_t *declaration = top_type->compound.declaration;
3393 declaration_t *entry = declaration->scope.declarations;
3395 top->compound_entry = entry;
3397 len = get_compound_size(&top_type->compound);
3399 path->top_type = entry->type;
3401 assert(is_type_array(top_type));
3402 assert(top_type->array.size > 0);
3405 path->top_type = top_type->array.element_type;
3406 len = top_type->array.size;
3408 if (initializer == NULL
3409 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3410 initializer = create_initializer_compound(len);
3411 /* we have to set the entry at the 2nd latest path entry... */
3412 size_t path_len = ARR_LEN(path->path);
3413 assert(path_len >= 1);
3415 type_path_entry_t *entry = & path->path[path_len-2];
3416 ir_initializer_t *tinitializer = entry->initializer;
3417 set_initializer_compound_value(tinitializer, entry->index,
3421 top->initializer = initializer;
3424 static void ascend_from_subtype(type_path_t *path)
3426 type_path_entry_t *top = get_type_path_top(path);
3428 path->top_type = top->type;
3430 size_t len = ARR_LEN(path->path);
3431 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3434 static void walk_designator(type_path_t *path, const designator_t *designator)
3436 /* designators start at current object type */
3437 ARR_RESIZE(type_path_entry_t, path->path, 1);
3439 for( ; designator != NULL; designator = designator->next) {
3440 type_path_entry_t *top = get_type_path_top(path);
3441 type_t *orig_type = top->type;
3442 type_t *type = skip_typeref(orig_type);
3444 if (designator->symbol != NULL) {
3445 assert(is_type_compound(type));
3447 symbol_t *symbol = designator->symbol;
3449 declaration_t *declaration = type->compound.declaration;
3450 declaration_t *iter = declaration->scope.declarations;
3451 for( ; iter != NULL; iter = iter->next, ++index) {
3452 if (iter->symbol == symbol) {
3456 assert(iter != NULL);
3458 top->type = orig_type;
3459 top->compound_entry = iter;
3461 orig_type = iter->type;
3463 expression_t *array_index = designator->array_index;
3464 assert(designator->array_index != NULL);
3465 assert(is_type_array(type));
3467 long index = fold_constant(array_index);
3470 if (type->array.size_constant) {
3471 long array_size = type->array.size;
3472 assert(index < array_size);
3476 top->type = orig_type;
3477 top->index = (size_t) index;
3478 orig_type = type->array.element_type;
3480 path->top_type = orig_type;
3482 if (designator->next != NULL) {
3483 descend_into_subtype(path);
3487 path->invalid = false;
3490 static void advance_current_object(type_path_t *path)
3492 if (path->invalid) {
3493 /* TODO: handle this... */
3494 panic("invalid initializer in ast2firm (excessive elements)");
3498 type_path_entry_t *top = get_type_path_top(path);
3500 type_t *type = skip_typeref(top->type);
3501 if (is_type_union(type)) {
3502 top->compound_entry = NULL;
3503 } else if (is_type_struct(type)) {
3504 declaration_t *entry = top->compound_entry;
3507 entry = entry->next;
3508 top->compound_entry = entry;
3509 if (entry != NULL) {
3510 path->top_type = entry->type;
3514 assert(is_type_array(type));
3517 if (!type->array.size_constant || top->index < type->array.size) {
3522 /* we're past the last member of the current sub-aggregate, try if we
3523 * can ascend in the type hierarchy and continue with another subobject */
3524 size_t len = ARR_LEN(path->path);
3527 ascend_from_subtype(path);
3528 advance_current_object(path);
3530 path->invalid = true;
3535 static ir_initializer_t *create_ir_initializer(
3536 const initializer_t *initializer, type_t *type);
3538 static ir_initializer_t *create_ir_initializer_value(
3539 const initializer_value_t *initializer)
3541 if (is_type_compound(initializer->value->base.type)) {
3542 panic("initializer creation for compounds not implemented yet");
3544 ir_node *value = expression_to_firm(initializer->value);
3545 return create_initializer_const(value);
3548 static ir_initializer_t *create_ir_initializer_list(
3549 const initializer_list_t *initializer, type_t *type)
3552 memset(&path, 0, sizeof(path));
3553 path.top_type = type;
3554 path.path = NEW_ARR_F(type_path_entry_t, 0);
3556 descend_into_subtype(&path);
3558 for(size_t i = 0; i < initializer->len; ++i) {
3559 const initializer_t *sub_initializer = initializer->initializers[i];
3561 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3562 walk_designator(&path, sub_initializer->designator.designator);
3566 if (sub_initializer->kind == INITIALIZER_VALUE) {
3567 /* we might have to descend into types until we're at a scalar
3570 type_t *orig_top_type = path.top_type;
3571 type_t *top_type = skip_typeref(orig_top_type);
3573 if (is_type_scalar(top_type))
3575 descend_into_subtype(&path);
3579 ir_initializer_t *sub_irinitializer
3580 = create_ir_initializer(sub_initializer, path.top_type);
3582 size_t path_len = ARR_LEN(path.path);
3583 assert(path_len >= 1);
3584 type_path_entry_t *entry = & path.path[path_len-1];
3585 ir_initializer_t *tinitializer = entry->initializer;
3586 set_initializer_compound_value(tinitializer, entry->index,
3589 advance_current_object(&path);
3592 assert(ARR_LEN(path.path) >= 1);
3593 ir_initializer_t *result = path.path[0].initializer;
3594 DEL_ARR_F(path.path);
3599 static ir_initializer_t *create_ir_initializer_string(
3600 const initializer_string_t *initializer, type_t *type)
3602 type = skip_typeref(type);
3604 size_t string_len = initializer->string.size;
3605 assert(type->kind == TYPE_ARRAY);
3606 assert(type->array.size_constant);
3607 size_t len = type->array.size;
3608 ir_initializer_t *irinitializer = create_initializer_compound(len);
3610 const char *string = initializer->string.begin;
3611 ir_mode *mode = get_ir_mode(type->array.element_type);
3613 for(size_t i = 0; i < len; ++i) {
3618 tarval *tv = new_tarval_from_long(c, mode);
3619 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3621 set_initializer_compound_value(irinitializer, i, char_initializer);
3624 return irinitializer;
3627 static ir_initializer_t *create_ir_initializer_wide_string(
3628 const initializer_wide_string_t *initializer, type_t *type)
3630 size_t string_len = initializer->string.size;
3631 assert(type->kind == TYPE_ARRAY);
3632 assert(type->array.size_constant);
3633 size_t len = type->array.size;
3634 ir_initializer_t *irinitializer = create_initializer_compound(len);
3636 const wchar_rep_t *string = initializer->string.begin;
3637 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3639 for(size_t i = 0; i < len; ++i) {
3641 if (i < string_len) {
3644 tarval *tv = new_tarval_from_long(c, mode);
3645 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3647 set_initializer_compound_value(irinitializer, i, char_initializer);
3650 return irinitializer;
3653 static ir_initializer_t *create_ir_initializer(
3654 const initializer_t *initializer, type_t *type)
3656 switch(initializer->kind) {
3657 case INITIALIZER_STRING:
3658 return create_ir_initializer_string(&initializer->string, type);
3660 case INITIALIZER_WIDE_STRING:
3661 return create_ir_initializer_wide_string(&initializer->wide_string,
3664 case INITIALIZER_LIST:
3665 return create_ir_initializer_list(&initializer->list, type);
3667 case INITIALIZER_VALUE:
3668 return create_ir_initializer_value(&initializer->value);
3670 case INITIALIZER_DESIGNATOR:
3671 panic("unexpected designator initializer found");
3673 panic("unknown initializer");
3676 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3679 if (is_atomic_type(type)) {
3680 ir_mode *mode = get_type_mode(type);
3681 tarval *zero = get_mode_null(mode);
3682 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3684 /* TODO: bitfields */
3685 ir_node *mem = get_store();
3686 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3687 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3690 assert(is_compound_type(type));
3693 if (is_Array_type(type)) {
3694 assert(has_array_upper_bound(type, 0));
3695 n_members = get_array_upper_bound_int(type, 0);
3697 n_members = get_compound_n_members(type);
3700 for(int i = 0; i < n_members; ++i) {
3703 if (is_Array_type(type)) {
3704 ir_entity *entity = get_array_element_entity(type);
3705 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3706 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3707 ir_node *in[1] = { cnst };
3708 irtype = get_array_element_type(type);
3709 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3711 ir_entity *member = get_compound_member(type, i);
3713 irtype = get_entity_type(member);
3714 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3717 create_dynamic_null_initializer(irtype, dbgi, addr);
3722 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3723 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3725 switch(get_initializer_kind(initializer)) {
3726 case IR_INITIALIZER_NULL: {
3727 create_dynamic_null_initializer(type, dbgi, base_addr);
3730 case IR_INITIALIZER_CONST: {
3731 ir_node *node = get_initializer_const_value(initializer);
3732 ir_mode *mode = get_irn_mode(node);
3733 ir_type *ent_type = get_entity_type(entity);
3735 /* is it a bitfield type? */
3736 if (get_primitive_base_type(ent_type) != NULL) {
3737 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3741 assert(get_type_mode(type) == mode);
3742 ir_node *mem = get_store();
3743 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3744 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3748 case IR_INITIALIZER_TARVAL: {
3749 tarval *tv = get_initializer_tarval_value(initializer);
3750 ir_mode *mode = get_tarval_mode(tv);
3751 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3752 ir_type *ent_type = get_entity_type(entity);
3754 /* is it a bitfield type? */
3755 if (get_primitive_base_type(ent_type) != NULL) {
3756 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3760 assert(get_type_mode(type) == mode);
3761 ir_node *mem = get_store();
3762 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3763 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3767 case IR_INITIALIZER_COMPOUND: {
3768 assert(is_compound_type(type));
3770 if (is_Array_type(type)) {
3771 assert(has_array_upper_bound(type, 0));
3772 n_members = get_array_upper_bound_int(type, 0);
3774 n_members = get_compound_n_members(type);
3777 if (get_initializer_compound_n_entries(initializer)
3778 != (unsigned) n_members)
3779 panic("initializer doesn't match compound type");
3781 for(int i = 0; i < n_members; ++i) {
3784 ir_entity *sub_entity;
3785 if (is_Array_type(type)) {
3786 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3787 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3788 ir_node *in[1] = { cnst };
3789 irtype = get_array_element_type(type);
3790 sub_entity = get_array_element_entity(type);
3791 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3794 sub_entity = get_compound_member(type, i);
3795 irtype = get_entity_type(sub_entity);
3796 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3800 ir_initializer_t *sub_init
3801 = get_initializer_compound_value(initializer, i);
3803 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3810 panic("invalid IR_INITIALIZER found");
3813 static void create_dynamic_initializer(ir_initializer_t *initializer,
3814 dbg_info *dbgi, ir_entity *entity)
3816 ir_node *frame = get_local_frame(entity);
3817 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3818 ir_type *type = get_entity_type(entity);
3820 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3823 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3824 ir_entity *entity, type_t *type)
3826 ir_node *memory = get_store();
3827 ir_node *nomem = new_NoMem();
3828 ir_node *frame = get_irg_frame(current_ir_graph);
3829 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3831 if (initializer->kind == INITIALIZER_VALUE) {
3832 initializer_value_t *initializer_value = &initializer->value;
3834 ir_node *value = expression_to_firm(initializer_value->value);
3835 type = skip_typeref(type);
3836 assign_value(dbgi, addr, type, value);
3840 if (!is_constant_initializer(initializer)) {
3841 ir_initializer_t *irinitializer
3842 = create_ir_initializer(initializer, type);
3844 create_dynamic_initializer(irinitializer, dbgi, entity);
3848 /* create the ir_initializer */
3849 ir_graph *const old_current_ir_graph = current_ir_graph;
3850 current_ir_graph = get_const_code_irg();
3852 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3854 assert(current_ir_graph == get_const_code_irg());
3855 current_ir_graph = old_current_ir_graph;
3857 /* create a "template" entity which is copied to the entity on the stack */
3858 ident *const id = id_unique("initializer.%u");
3859 ir_type *const irtype = get_ir_type(type);
3860 ir_type *const global_type = get_glob_type();
3861 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3862 set_entity_ld_ident(init_entity, id);
3864 set_entity_variability(init_entity, variability_initialized);
3865 set_entity_visibility(init_entity, visibility_local);
3866 set_entity_allocation(init_entity, allocation_static);
3868 set_entity_initializer(init_entity, irinitializer);
3870 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3871 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3873 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3874 set_store(copyb_mem);
3877 static void create_initializer_local_variable_entity(declaration_t *declaration)
3879 initializer_t *initializer = declaration->init.initializer;
3880 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3881 ir_entity *entity = declaration->v.entity;
3882 type_t *type = declaration->type;
3883 create_local_initializer(initializer, dbgi, entity, type);
3886 static void create_declaration_initializer(declaration_t *declaration)
3888 initializer_t *initializer = declaration->init.initializer;
3889 if (initializer == NULL)
3892 declaration_kind_t declaration_kind
3893 = (declaration_kind_t) declaration->declaration_kind;
3894 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3895 create_initializer_local_variable_entity(declaration);
3899 type_t *type = declaration->type;
3900 type_qualifiers_t tq = get_type_qualifier(type, true);
3902 if (initializer->kind == INITIALIZER_VALUE) {
3903 initializer_value_t *initializer_value = &initializer->value;
3905 = get_dbg_info(&declaration->source_position);
3907 ir_node *value = expression_to_firm(initializer_value->value);
3908 value = do_strict_conv(dbgi, value);
3910 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3911 set_value(declaration->v.value_number, value);
3913 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3915 ir_entity *entity = declaration->v.entity;
3917 if (tq & TYPE_QUALIFIER_CONST) {
3918 set_entity_variability(entity, variability_constant);
3920 set_entity_variability(entity, variability_initialized);
3922 set_atomic_ent_value(entity, value);
3925 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3926 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3928 ir_entity *entity = declaration->v.entity;
3929 ir_initializer_t *irinitializer
3930 = create_ir_initializer(initializer, type);
3932 if (tq & TYPE_QUALIFIER_CONST) {
3933 set_entity_variability(entity, variability_constant);
3935 set_entity_variability(entity, variability_initialized);
3937 set_entity_initializer(entity, irinitializer);
3941 static void create_variable_length_array(declaration_t *declaration)
3943 /* initializers are not allowed for VLAs */
3944 assert(declaration->init.initializer == NULL);
3946 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3947 declaration->v.vla_base = NULL;
3949 /* TODO: record VLA somewhere so we create the free node when we leave
3953 static void allocate_variable_length_array(declaration_t *declaration)
3955 /* initializers are not allowed for VLAs */
3956 assert(declaration->init.initializer == NULL);
3957 assert(get_cur_block() != NULL);
3959 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3960 type_t *type = declaration->type;
3961 ir_type *el_type = get_ir_type(type->array.element_type);
3963 /* make sure size_node is calculated */
3964 get_type_size(type);
3965 ir_node *elems = type->array.size_node;
3966 ir_node *mem = get_store();
3967 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3969 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3970 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3973 assert(declaration->declaration_kind
3974 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3975 declaration->v.vla_base = addr;
3979 * Creates a Firm local variable from a declaration.
3981 static void create_local_variable(declaration_t *declaration)
3983 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3985 bool needs_entity = declaration->address_taken;
3986 type_t *type = skip_typeref(declaration->type);
3988 /* is it a variable length array? */
3989 if (is_type_array(type) && !type->array.size_constant) {
3990 create_variable_length_array(declaration);
3992 } else if (is_type_array(type) || is_type_compound(type)) {
3993 needs_entity = true;
3994 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3995 needs_entity = true;
3999 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4000 create_declaration_entity(declaration,
4001 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4004 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4005 declaration->v.value_number = next_value_number_function;
4006 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
4007 ++next_value_number_function;
4011 static void create_local_static_variable(declaration_t *declaration)
4013 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
4015 type_t *const type = skip_typeref(declaration->type);
4016 ir_type *const global_type = get_glob_type();
4017 ir_type *const irtype = get_ir_type(type);
4018 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
4020 size_t l = strlen(declaration->symbol->string);
4021 char buf[l + sizeof(".%u")];
4022 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
4023 ident *const id = id_unique(buf);
4025 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
4027 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4028 set_entity_volatility(entity, volatility_is_volatile);
4031 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4032 declaration->v.entity = entity;
4033 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
4034 set_entity_variability(entity, variability_uninitialized);
4035 set_entity_visibility(entity, visibility_local);
4036 set_entity_allocation(entity, allocation_static);
4038 ir_graph *const old_current_ir_graph = current_ir_graph;
4039 current_ir_graph = get_const_code_irg();
4041 create_declaration_initializer(declaration);
4043 assert(current_ir_graph == get_const_code_irg());
4044 current_ir_graph = old_current_ir_graph;
4049 static void return_statement_to_firm(return_statement_t *statement)
4051 if (get_cur_block() == NULL)
4054 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4055 ir_type *func_irtype = get_ir_type(current_function_decl->type);
4060 if (get_method_n_ress(func_irtype) > 0) {
4061 ir_type *res_type = get_method_res_type(func_irtype, 0);
4063 if (statement->value != NULL) {
4064 ir_node *node = expression_to_firm(statement->value);
4065 node = do_strict_conv(dbgi, node);
4069 if (is_compound_type(res_type)) {
4072 mode = get_type_mode(res_type);
4074 in[0] = new_Unknown(mode);
4078 /* build return_value for its side effects */
4079 if (statement->value != NULL) {
4080 expression_to_firm(statement->value);
4085 ir_node *store = get_store();
4086 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4088 ir_node *end_block = get_irg_end_block(current_ir_graph);
4089 add_immBlock_pred(end_block, ret);
4091 set_cur_block(NULL);
4094 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4096 if (get_cur_block() == NULL)
4099 return expression_to_firm(statement->expression);
4102 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4104 declaration_t *declaration = compound->scope.declarations;
4105 for( ; declaration != NULL; declaration = declaration->next) {
4106 create_local_declaration(declaration);
4109 ir_node *result = NULL;
4110 statement_t *statement = compound->statements;
4111 for( ; statement != NULL; statement = statement->base.next) {
4112 if (statement->base.next == NULL
4113 && statement->kind == STATEMENT_EXPRESSION) {
4114 result = expression_statement_to_firm(
4115 &statement->expression);
4118 statement_to_firm(statement);
4124 static void create_global_variable(declaration_t *declaration)
4128 switch ((storage_class_tag_t)declaration->storage_class) {
4129 case STORAGE_CLASS_STATIC:
4130 vis = visibility_local;
4133 case STORAGE_CLASS_EXTERN:
4134 vis = visibility_external_allocated;
4137 case STORAGE_CLASS_NONE:
4138 vis = visibility_external_visible;
4141 case STORAGE_CLASS_THREAD:
4142 vis = visibility_external_visible;
4145 case STORAGE_CLASS_THREAD_EXTERN:
4146 vis = visibility_external_allocated;
4149 case STORAGE_CLASS_THREAD_STATIC:
4150 vis = visibility_local;
4154 var_type = get_tls_type();
4158 var_type = get_glob_type();
4162 create_declaration_entity(declaration,
4163 DECLARATION_KIND_GLOBAL_VARIABLE,
4165 if (!is_type_function(skip_typeref(declaration->type))) {
4166 set_entity_visibility(declaration->v.entity, vis);
4171 case STORAGE_CLASS_TYPEDEF:
4172 case STORAGE_CLASS_AUTO:
4173 case STORAGE_CLASS_REGISTER:
4174 case STORAGE_CLASS_ENUM_ENTRY:
4177 panic("Invalid storage class for global variable");
4180 static void create_local_declaration(declaration_t *declaration)
4182 if (declaration->namespc != NAMESPACE_NORMAL)
4184 /* construct type */
4185 (void) get_ir_type(declaration->type);
4186 if (declaration->symbol == NULL) {
4190 type_t *type = skip_typeref(declaration->type);
4192 switch ((storage_class_tag_t) declaration->storage_class) {
4193 case STORAGE_CLASS_STATIC:
4194 create_local_static_variable(declaration);
4196 case STORAGE_CLASS_EXTERN:
4197 create_global_variable(declaration);
4198 create_declaration_initializer(declaration);
4200 case STORAGE_CLASS_NONE:
4201 case STORAGE_CLASS_AUTO:
4202 case STORAGE_CLASS_REGISTER:
4203 if (is_type_function(type)) {
4204 if (declaration->init.statement != NULL) {
4205 get_function_entity(declaration);
4206 declaration->declaration_kind = DECLARATION_KIND_INNER_FUNCTION;
4207 enqueue_inner_function(declaration);
4209 get_function_entity(declaration);
4212 create_local_variable(declaration);
4215 case STORAGE_CLASS_ENUM_ENTRY:
4216 /* should already be handled */
4217 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4219 case STORAGE_CLASS_TYPEDEF:
4220 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4222 case STORAGE_CLASS_THREAD:
4223 case STORAGE_CLASS_THREAD_EXTERN:
4224 case STORAGE_CLASS_THREAD_STATIC:
4227 panic("invalid storage class found");
4230 static void initialize_local_declaration(declaration_t *declaration)
4232 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4235 switch ((declaration_kind_t) declaration->declaration_kind) {
4236 case DECLARATION_KIND_LOCAL_VARIABLE:
4237 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4238 create_declaration_initializer(declaration);
4241 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4242 allocate_variable_length_array(declaration);
4245 case DECLARATION_KIND_LABEL_BLOCK:
4246 case DECLARATION_KIND_COMPOUND_MEMBER:
4247 case DECLARATION_KIND_GLOBAL_VARIABLE:
4248 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4249 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4250 case DECLARATION_KIND_FUNCTION:
4251 case DECLARATION_KIND_TYPE:
4252 case DECLARATION_KIND_ENUM_ENTRY:
4253 case DECLARATION_KIND_INNER_FUNCTION:
4256 case DECLARATION_KIND_UNKNOWN:
4257 panic("can't initialize unknown declaration");
4259 panic("invalid declaration kind");
4262 static void declaration_statement_to_firm(declaration_statement_t *statement)
4264 declaration_t *declaration = statement->declarations_begin;
4265 declaration_t *end = statement->declarations_end->next;
4266 for( ; declaration != end; declaration = declaration->next) {
4267 if (declaration->namespc != NAMESPACE_NORMAL)
4269 initialize_local_declaration(declaration);
4273 static void if_statement_to_firm(if_statement_t *statement)
4275 ir_node *cur_block = get_cur_block();
4277 ir_node *fallthrough_block = NULL;
4279 /* the true (blocks) */
4280 ir_node *true_block = NULL;
4281 if (statement->true_statement != NULL) {
4282 true_block = new_immBlock();
4283 statement_to_firm(statement->true_statement);
4284 if (get_cur_block() != NULL) {
4285 ir_node *jmp = new_Jmp();
4286 if (fallthrough_block == NULL)
4287 fallthrough_block = new_immBlock();
4288 add_immBlock_pred(fallthrough_block, jmp);
4292 /* the false (blocks) */
4293 ir_node *false_block = NULL;
4294 if (statement->false_statement != NULL) {
4295 false_block = new_immBlock();
4297 statement_to_firm(statement->false_statement);
4298 if (get_cur_block() != NULL) {
4299 ir_node *jmp = new_Jmp();
4300 if (fallthrough_block == NULL)
4301 fallthrough_block = new_immBlock();
4302 add_immBlock_pred(fallthrough_block, jmp);
4306 /* create the condition */
4307 if (cur_block != NULL) {
4308 if (true_block == NULL || false_block == NULL) {
4309 if (fallthrough_block == NULL)
4310 fallthrough_block = new_immBlock();
4311 if (true_block == NULL)
4312 true_block = fallthrough_block;
4313 if (false_block == NULL)
4314 false_block = fallthrough_block;
4317 set_cur_block(cur_block);
4318 create_condition_evaluation(statement->condition, true_block,
4322 mature_immBlock(true_block);
4323 if (false_block != fallthrough_block && false_block != NULL) {
4324 mature_immBlock(false_block);
4326 if (fallthrough_block != NULL) {
4327 mature_immBlock(fallthrough_block);
4330 set_cur_block(fallthrough_block);
4333 static void while_statement_to_firm(while_statement_t *statement)
4335 ir_node *jmp = NULL;
4336 if (get_cur_block() != NULL) {
4340 /* create the header block */
4341 ir_node *header_block = new_immBlock();
4343 add_immBlock_pred(header_block, jmp);
4347 ir_node *old_continue_label = continue_label;
4348 ir_node *old_break_label = break_label;
4349 continue_label = header_block;
4352 ir_node *body_block = new_immBlock();
4353 statement_to_firm(statement->body);
4354 ir_node *false_block = break_label;
4356 assert(continue_label == header_block);
4357 continue_label = old_continue_label;
4358 break_label = old_break_label;
4360 if (get_cur_block() != NULL) {
4362 add_immBlock_pred(header_block, jmp);
4365 /* shortcut for while(true) */
4366 if (is_constant_expression(statement->condition)
4367 && fold_constant(statement->condition) != 0) {
4368 set_cur_block(header_block);
4369 ir_node *header_jmp = new_Jmp();
4370 add_immBlock_pred(body_block, header_jmp);
4372 keep_alive(body_block);
4373 keep_all_memory(body_block);
4374 set_cur_block(body_block);
4376 if (false_block == NULL) {
4377 false_block = new_immBlock();
4380 /* create the condition */
4381 set_cur_block(header_block);
4383 create_condition_evaluation(statement->condition, body_block,
4387 mature_immBlock(body_block);
4388 mature_immBlock(header_block);
4389 if (false_block != NULL) {
4390 mature_immBlock(false_block);
4393 set_cur_block(false_block);
4396 static void do_while_statement_to_firm(do_while_statement_t *statement)
4398 ir_node *jmp = NULL;
4399 if (get_cur_block() != NULL) {
4403 /* create the header block */
4404 ir_node *header_block = new_immBlock();
4407 ir_node *body_block = new_immBlock();
4409 add_immBlock_pred(body_block, jmp);
4412 ir_node *old_continue_label = continue_label;
4413 ir_node *old_break_label = break_label;
4414 continue_label = header_block;
4417 statement_to_firm(statement->body);
4418 ir_node *false_block = break_label;
4420 assert(continue_label == header_block);
4421 continue_label = old_continue_label;
4422 break_label = old_break_label;
4424 if (get_cur_block() != NULL) {
4425 ir_node *body_jmp = new_Jmp();
4426 add_immBlock_pred(header_block, body_jmp);
4427 mature_immBlock(header_block);
4430 if (false_block == NULL) {
4431 false_block = new_immBlock();
4434 /* create the condition */
4435 set_cur_block(header_block);
4437 create_condition_evaluation(statement->condition, body_block, false_block);
4438 mature_immBlock(body_block);
4439 mature_immBlock(header_block);
4440 if (false_block != NULL) {
4441 mature_immBlock(false_block);
4444 set_cur_block(false_block);
4447 static void for_statement_to_firm(for_statement_t *statement)
4449 ir_node *jmp = NULL;
4451 /* create declarations */
4452 declaration_t *declaration = statement->scope.declarations;
4453 for( ; declaration != NULL; declaration = declaration->next) {
4454 create_local_declaration(declaration);
4457 if (get_cur_block() != NULL) {
4458 declaration = statement->scope.declarations;
4459 for( ; declaration != NULL; declaration = declaration->next) {
4460 initialize_local_declaration(declaration);
4463 if (statement->initialisation != NULL) {
4464 expression_to_firm(statement->initialisation);
4471 /* create the step block */
4472 ir_node *const step_block = new_immBlock();
4473 if (statement->step != NULL) {
4474 expression_to_firm(statement->step);
4476 ir_node *const step_jmp = new_Jmp();
4478 /* create the header block */
4479 ir_node *const header_block = new_immBlock();
4481 add_immBlock_pred(header_block, jmp);
4483 add_immBlock_pred(header_block, step_jmp);
4485 /* the false block */
4486 ir_node *const false_block = new_immBlock();
4489 ir_node * body_block;
4490 if (statement->body != NULL) {
4491 ir_node *const old_continue_label = continue_label;
4492 ir_node *const old_break_label = break_label;
4493 continue_label = step_block;
4494 break_label = false_block;
4496 body_block = new_immBlock();
4497 statement_to_firm(statement->body);
4499 assert(continue_label == step_block);
4500 assert(break_label == false_block);
4501 continue_label = old_continue_label;
4502 break_label = old_break_label;
4504 if (get_cur_block() != NULL) {
4506 add_immBlock_pred(step_block, jmp);
4509 body_block = step_block;
4512 /* create the condition */
4513 set_cur_block(header_block);
4514 if (statement->condition != NULL) {
4515 create_condition_evaluation(statement->condition, body_block,
4518 keep_alive(header_block);
4519 keep_all_memory(header_block);
4521 add_immBlock_pred(body_block, jmp);
4524 mature_immBlock(body_block);
4525 mature_immBlock(false_block);
4526 mature_immBlock(step_block);
4527 mature_immBlock(header_block);
4528 mature_immBlock(false_block);
4530 set_cur_block(false_block);
4533 static void create_jump_statement(const statement_t *statement,
4534 ir_node *target_block)
4536 if (get_cur_block() == NULL)
4539 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4540 ir_node *jump = new_d_Jmp(dbgi);
4541 add_immBlock_pred(target_block, jump);
4543 set_cur_block(NULL);
4546 static ir_node *get_break_label(void)
4548 if (break_label == NULL) {
4549 ir_node *cur_block = get_cur_block();
4550 break_label = new_immBlock();
4551 set_cur_block(cur_block);
4556 static void switch_statement_to_firm(switch_statement_t *statement)
4558 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4560 ir_node *expression = expression_to_firm(statement->expression);
4561 ir_node *cond = new_d_Cond(dbgi, expression);
4563 set_cur_block(NULL);
4565 ir_node *const old_switch_cond = current_switch_cond;
4566 ir_node *const old_break_label = break_label;
4567 const bool old_saw_default_label = saw_default_label;
4568 saw_default_label = false;
4569 current_switch_cond = cond;
4571 switch_statement_t *const old_switch = current_switch;
4572 current_switch = statement;
4574 /* determine a free number for the default label */
4575 unsigned long num_cases = 0;
4577 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4578 if (l->expression == NULL) {
4582 if (l->last_case >= l->first_case)
4583 num_cases += l->last_case - l->first_case;
4584 if (l->last_case > def_nr)
4585 def_nr = l->last_case;
4588 if (def_nr + 1 < 0) {
4589 /* Bad: an overflow occurred, we cannot be sure that the
4590 * maximum + 1 is a free number. Scan the values a second
4591 * time to find a free number.
4593 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4596 memset(bits, 0, (num_cases + 7) >> 3);
4597 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4598 if (l->expression == NULL) {
4602 for (long cns = l->first_case; cns <= l->last_case; ++cns) {
4603 if (cns >= 0 && (unsigned long)cns < num_cases)
4604 bits[cns >> 3] |= (1 << (cns & 7));
4607 /* We look at the first num_cases constants:
4608 * Either they are densed, so we took the last (num_cases)
4609 * one, or they are non densed, so we will find one free
4612 for (i = 0; i < num_cases; ++i)
4613 if ((bits[i >> 3] & (i & 7)) == 0)
4621 statement->default_proj_nr = def_nr;
4623 if (statement->body != NULL) {
4624 statement_to_firm(statement->body);
4627 if (get_cur_block() != NULL) {
4628 ir_node *jmp = new_Jmp();
4629 add_immBlock_pred(get_break_label(), jmp);
4632 if (!saw_default_label) {
4633 set_cur_block(get_nodes_block(cond));
4634 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4635 statement->default_proj_nr);
4636 add_immBlock_pred(get_break_label(), proj);
4639 if (break_label != NULL) {
4640 mature_immBlock(break_label);
4642 set_cur_block(break_label);
4644 assert(current_switch_cond == cond);
4645 current_switch = old_switch;
4646 current_switch_cond = old_switch_cond;
4647 break_label = old_break_label;
4648 saw_default_label = old_saw_default_label;
4651 static void case_label_to_firm(const case_label_statement_t *statement)
4653 if (statement->is_empty_range)
4656 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4658 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4661 ir_node *old_block = get_nodes_block(current_switch_cond);
4662 ir_node *block = new_immBlock();
4664 set_cur_block(old_block);
4665 if (statement->expression != NULL) {
4666 long pn = statement->first_case;
4667 long end_pn = statement->last_case;
4668 assert(pn <= end_pn);
4669 /* create jumps for all cases in the given range */
4671 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4672 add_immBlock_pred(block, proj);
4673 } while(pn++ < end_pn);
4675 saw_default_label = true;
4676 proj = new_d_defaultProj(dbgi, current_switch_cond,
4677 current_switch->default_proj_nr);
4679 add_immBlock_pred(block, proj);
4682 if (fallthrough != NULL) {
4683 add_immBlock_pred(block, fallthrough);
4685 mature_immBlock(block);
4686 set_cur_block(block);
4688 if (statement->statement != NULL) {
4689 statement_to_firm(statement->statement);
4693 static void label_to_firm(const label_statement_t *statement)
4695 ir_node *block = get_label_block(statement->label);
4697 if (get_cur_block() != NULL) {
4698 ir_node *jmp = new_Jmp();
4699 add_immBlock_pred(block, jmp);
4702 set_cur_block(block);
4704 keep_all_memory(block);
4706 if (statement->statement != NULL) {
4707 statement_to_firm(statement->statement);
4711 static void goto_to_firm(const goto_statement_t *statement)
4713 if (get_cur_block() == NULL)
4716 if (statement->expression) {
4717 ir_node *irn = expression_to_firm(statement->expression);
4718 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4719 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4721 set_irn_link(ijmp, ijmp_list);
4724 if (statement->outer_fkt_jmp) {
4725 /* TODO: this is a outer function jmp */
4726 panic("outer function jump not implemented");
4728 ir_node *block = get_label_block(statement->label);
4729 ir_node *jmp = new_Jmp();
4730 add_immBlock_pred(block, jmp);
4733 set_cur_block(NULL);
4736 static void asm_statement_to_firm(const asm_statement_t *statement)
4738 bool needs_memory = false;
4740 if (statement->is_volatile) {
4741 needs_memory = true;
4744 size_t n_clobbers = 0;
4745 asm_clobber_t *clobber = statement->clobbers;
4746 for( ; clobber != NULL; clobber = clobber->next) {
4747 const char *clobber_str = clobber->clobber.begin;
4749 if (!be_is_valid_clobber(clobber_str)) {
4750 errorf(&statement->base.source_position,
4751 "invalid clobber '%s' specified", clobber->clobber);
4755 if (strcmp(clobber_str, "memory") == 0) {
4756 needs_memory = true;
4760 ident *id = new_id_from_str(clobber_str);
4761 obstack_ptr_grow(&asm_obst, id);
4764 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4765 ident **clobbers = NULL;
4766 if (n_clobbers > 0) {
4767 clobbers = obstack_finish(&asm_obst);
4770 size_t n_inputs = 0;
4771 asm_argument_t *argument = statement->inputs;
4772 for ( ; argument != NULL; argument = argument->next)
4774 size_t n_outputs = 0;
4775 argument = statement->outputs;
4776 for ( ; argument != NULL; argument = argument->next)
4779 unsigned next_pos = 0;
4781 ir_node *ins[n_inputs + n_outputs + 1];
4784 ir_asm_constraint tmp_in_constraints[n_outputs];
4786 const expression_t *out_exprs[n_outputs];
4787 ir_node *out_addrs[n_outputs];
4788 size_t out_size = 0;
4790 argument = statement->outputs;
4791 for ( ; argument != NULL; argument = argument->next) {
4792 const char *constraints = argument->constraints.begin;
4793 asm_constraint_flags_t asm_flags
4794 = be_parse_asm_constraints(constraints);
4796 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4797 errorf(&statement->base.source_position,
4798 "some constraints in '%s' are not supported", constraints);
4801 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4802 errorf(&statement->base.source_position,
4803 "some constraints in '%s' are invalid", constraints);
4806 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4807 errorf(&statement->base.source_position,
4808 "no write flag specified for output constraints '%s'",
4813 unsigned pos = next_pos++;
4814 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4815 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4816 expression_t *expr = argument->expression;
4817 ir_node *addr = expression_to_addr(expr);
4818 /* in+output, construct an artifical same_as constraint on the
4820 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4822 ir_node *value = get_value_from_lvalue(expr, addr);
4824 snprintf(buf, sizeof(buf), "%d", pos);
4826 ir_asm_constraint constraint;
4827 constraint.pos = pos;
4828 constraint.constraint = new_id_from_str(buf);
4829 constraint.mode = get_ir_mode(expr->base.type);
4830 tmp_in_constraints[in_size] = constraint;
4831 ins[in_size] = value;
4836 out_exprs[out_size] = expr;
4837 out_addrs[out_size] = addr;
4839 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4840 /* pure memory ops need no input (but we have to make sure we
4841 * attach to the memory) */
4842 assert(! (asm_flags &
4843 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4844 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4845 needs_memory = true;
4847 /* we need to attach the address to the inputs */
4848 expression_t *expr = argument->expression;
4850 ir_asm_constraint constraint;
4851 constraint.pos = pos;
4852 constraint.constraint = new_id_from_str(constraints);
4853 constraint.mode = NULL;
4854 tmp_in_constraints[in_size] = constraint;
4856 ins[in_size] = expression_to_addr(expr);
4860 errorf(&statement->base.source_position,
4861 "only modifiers but no place set in constraints '%s'",
4866 ir_asm_constraint constraint;
4867 constraint.pos = pos;
4868 constraint.constraint = new_id_from_str(constraints);
4869 constraint.mode = get_ir_mode(argument->expression->base.type);
4871 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4873 assert(obstack_object_size(&asm_obst)
4874 == out_size * sizeof(ir_asm_constraint));
4875 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4878 obstack_grow(&asm_obst, tmp_in_constraints,
4879 in_size * sizeof(tmp_in_constraints[0]));
4880 /* find and count input and output arguments */
4881 argument = statement->inputs;
4882 for( ; argument != NULL; argument = argument->next) {
4883 const char *constraints = argument->constraints.begin;
4884 asm_constraint_flags_t asm_flags
4885 = be_parse_asm_constraints(constraints);
4887 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4888 errorf(&statement->base.source_position,
4889 "some constraints in '%s' are not supported", constraints);
4892 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4893 errorf(&statement->base.source_position,
4894 "some constraints in '%s' are invalid", constraints);
4897 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4898 errorf(&statement->base.source_position,
4899 "write flag specified for input constraints '%s'",
4905 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4906 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4907 /* we can treat this as "normal" input */
4908 input = expression_to_firm(argument->expression);
4909 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4910 /* pure memory ops need no input (but we have to make sure we
4911 * attach to the memory) */
4912 assert(! (asm_flags &
4913 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4914 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4915 needs_memory = true;
4916 input = expression_to_addr(argument->expression);
4918 errorf(&statement->base.source_position,
4919 "only modifiers but no place set in constraints '%s'",
4924 ir_asm_constraint constraint;
4925 constraint.pos = next_pos++;
4926 constraint.constraint = new_id_from_str(constraints);
4927 constraint.mode = get_irn_mode(input);
4929 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4930 ins[in_size++] = input;
4934 ir_asm_constraint constraint;
4935 constraint.pos = next_pos++;
4936 constraint.constraint = new_id_from_str("");
4937 constraint.mode = mode_M;
4939 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4940 ins[in_size++] = get_store();
4943 assert(obstack_object_size(&asm_obst)
4944 == in_size * sizeof(ir_asm_constraint));
4945 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4947 /* create asm node */
4948 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4950 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4952 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4953 out_size, output_constraints,
4954 n_clobbers, clobbers, asm_text);
4956 if (statement->is_volatile) {
4957 set_irn_pinned(node, op_pin_state_pinned);
4959 set_irn_pinned(node, op_pin_state_floats);
4962 /* create output projs & connect them */
4964 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4969 for (i = 0; i < out_size; ++i) {
4970 const expression_t *out_expr = out_exprs[i];
4972 ir_mode *mode = get_ir_mode(out_expr->base.type);
4973 ir_node *proj = new_Proj(node, mode, pn);
4974 ir_node *addr = out_addrs[i];
4976 set_value_for_expression_addr(out_expr, proj, addr);
4980 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4981 statement_to_firm(statement->try_statement);
4982 warningf(&statement->base.source_position, "structured exception handling ignored");
4985 static void leave_statement_to_firm(leave_statement_t *statement) {
4986 errorf(&statement->base.source_position, "__leave not supported yet");
4990 * Transform a statement.
4992 static void statement_to_firm(statement_t *statement)
4995 assert(!statement->base.transformed);
4996 statement->base.transformed = true;
4999 switch(statement->kind) {
5000 case STATEMENT_INVALID:
5001 panic("invalid statement found");
5003 case STATEMENT_EMPTY:
5006 case STATEMENT_COMPOUND:
5007 compound_statement_to_firm(&statement->compound);
5009 case STATEMENT_RETURN:
5010 return_statement_to_firm(&statement->returns);
5012 case STATEMENT_EXPRESSION:
5013 expression_statement_to_firm(&statement->expression);
5016 if_statement_to_firm(&statement->ifs);
5018 case STATEMENT_WHILE:
5019 while_statement_to_firm(&statement->whiles);
5021 case STATEMENT_DO_WHILE:
5022 do_while_statement_to_firm(&statement->do_while);
5024 case STATEMENT_DECLARATION:
5025 declaration_statement_to_firm(&statement->declaration);
5027 case STATEMENT_BREAK:
5028 create_jump_statement(statement, get_break_label());
5030 case STATEMENT_CONTINUE:
5031 create_jump_statement(statement, continue_label);
5033 case STATEMENT_SWITCH:
5034 switch_statement_to_firm(&statement->switchs);
5036 case STATEMENT_CASE_LABEL:
5037 case_label_to_firm(&statement->case_label);
5040 for_statement_to_firm(&statement->fors);
5042 case STATEMENT_LABEL:
5043 label_to_firm(&statement->label);
5045 case STATEMENT_GOTO:
5046 goto_to_firm(&statement->gotos);
5049 asm_statement_to_firm(&statement->asms);
5051 case STATEMENT_MS_TRY:
5052 ms_try_statement_to_firm(&statement->ms_try);
5054 case STATEMENT_LEAVE:
5055 leave_statement_to_firm(&statement->leave);
5058 panic("Statement not implemented\n");
5061 static int count_decls_in_expression(const expression_t *expression);
5063 static int count_local_declarations(const declaration_t * decl,
5064 const declaration_t *const end)
5067 for (; decl != end; decl = decl->next) {
5068 if (decl->namespc != NAMESPACE_NORMAL)
5070 type_t *type = skip_typeref(decl->type);
5072 if (!decl->address_taken && is_type_scalar(type))
5074 const initializer_t *initializer = decl->init.initializer;
5075 /* FIXME: should walk initializer hierarchies... */
5076 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
5077 count += count_decls_in_expression(initializer->value.value);
5083 static int count_decls_in_expression(const expression_t *expression) {
5086 if (expression == NULL)
5089 switch((expression_kind_t) expression->base.kind) {
5090 case EXPR_STATEMENT:
5091 return count_decls_in_stmts(expression->statement.statement);
5093 int count_left = count_decls_in_expression(expression->binary.left);
5094 int count_right = count_decls_in_expression(expression->binary.right);
5095 return count_left + count_right;
5098 return count_decls_in_expression(expression->unary.value);
5100 call_argument_t *argument = expression->call.arguments;
5101 for( ; argument != NULL; argument = argument->next) {
5102 count += count_decls_in_expression(argument->expression);
5109 panic("unexpected expression kind");
5111 case EXPR_COMPOUND_LITERAL:
5115 case EXPR_CONDITIONAL:
5116 count += count_decls_in_expression(expression->conditional.condition);
5117 count += count_decls_in_expression(expression->conditional.true_expression);
5118 count += count_decls_in_expression(expression->conditional.false_expression);
5121 case EXPR_BUILTIN_PREFETCH:
5122 count += count_decls_in_expression(expression->builtin_prefetch.adr);
5123 count += count_decls_in_expression(expression->builtin_prefetch.rw);
5124 count += count_decls_in_expression(expression->builtin_prefetch.locality);
5127 case EXPR_BUILTIN_CONSTANT_P:
5128 count += count_decls_in_expression(expression->builtin_constant.value);
5132 count += count_decls_in_expression(expression->select.compound);
5135 case EXPR_ARRAY_ACCESS:
5136 count += count_decls_in_expression(expression->array_access.array_ref);
5137 count += count_decls_in_expression(expression->array_access.index);
5140 case EXPR_CLASSIFY_TYPE:
5141 count += count_decls_in_expression(expression->classify_type.type_expression);
5145 case EXPR_ALIGNOF: {
5146 expression_t *tp_expression = expression->typeprop.tp_expression;
5147 if (tp_expression != NULL) {
5148 count += count_decls_in_expression(tp_expression);
5154 case EXPR_REFERENCE:
5156 case EXPR_CHARACTER_CONSTANT:
5157 case EXPR_WIDE_CHARACTER_CONSTANT:
5158 case EXPR_STRING_LITERAL:
5159 case EXPR_WIDE_STRING_LITERAL:
5161 case EXPR_BUILTIN_SYMBOL:
5164 case EXPR_LABEL_ADDRESS:
5168 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
5169 * (or implement all the missing expressions here/implement a walker)
5175 static int count_decls_in_stmts(const statement_t *stmt)
5178 for (; stmt != NULL; stmt = stmt->base.next) {
5179 switch (stmt->kind) {
5180 case STATEMENT_EMPTY:
5183 case STATEMENT_DECLARATION: {
5184 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5185 count += count_local_declarations(decl_stmt->declarations_begin,
5186 decl_stmt->declarations_end->next);
5190 case STATEMENT_COMPOUND: {
5191 const compound_statement_t *const comp =
5193 count += count_decls_in_stmts(comp->statements);
5197 case STATEMENT_IF: {
5198 const if_statement_t *const if_stmt = &stmt->ifs;
5199 count += count_decls_in_expression(if_stmt->condition);
5200 count += count_decls_in_stmts(if_stmt->true_statement);
5201 count += count_decls_in_stmts(if_stmt->false_statement);
5205 case STATEMENT_SWITCH: {
5206 const switch_statement_t *const switch_stmt = &stmt->switchs;
5207 count += count_decls_in_expression(switch_stmt->expression);
5208 count += count_decls_in_stmts(switch_stmt->body);
5212 case STATEMENT_LABEL: {
5213 const label_statement_t *const label_stmt = &stmt->label;
5214 if (label_stmt->statement != NULL) {
5215 count += count_decls_in_stmts(label_stmt->statement);
5220 case STATEMENT_WHILE: {
5221 const while_statement_t *const while_stmt = &stmt->whiles;
5222 count += count_decls_in_expression(while_stmt->condition);
5223 count += count_decls_in_stmts(while_stmt->body);
5227 case STATEMENT_DO_WHILE: {
5228 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
5229 count += count_decls_in_expression(do_while_stmt->condition);
5230 count += count_decls_in_stmts(do_while_stmt->body);
5234 case STATEMENT_FOR: {
5235 const for_statement_t *const for_stmt = &stmt->fors;
5236 count += count_local_declarations(for_stmt->scope.declarations, NULL);
5237 count += count_decls_in_expression(for_stmt->initialisation);
5238 count += count_decls_in_expression(for_stmt->condition);
5239 count += count_decls_in_expression(for_stmt->step);
5240 count += count_decls_in_stmts(for_stmt->body);
5244 case STATEMENT_CASE_LABEL: {
5245 const case_label_statement_t *label = &stmt->case_label;
5246 count += count_decls_in_expression(label->expression);
5247 if (label->statement != NULL) {
5248 count += count_decls_in_stmts(label->statement);
5254 case STATEMENT_BREAK:
5255 case STATEMENT_CONTINUE:
5258 case STATEMENT_EXPRESSION: {
5259 const expression_statement_t *expr_stmt = &stmt->expression;
5260 count += count_decls_in_expression(expr_stmt->expression);
5264 case STATEMENT_GOTO:
5265 case STATEMENT_LEAVE:
5266 case STATEMENT_INVALID:
5269 case STATEMENT_RETURN: {
5270 const return_statement_t *ret_stmt = &stmt->returns;
5271 count += count_decls_in_expression(ret_stmt->value);
5275 case STATEMENT_MS_TRY: {
5276 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5277 count += count_decls_in_stmts(try_stmt->try_statement);
5278 if (try_stmt->except_expression != NULL)
5279 count += count_decls_in_expression(try_stmt->except_expression);
5280 count += count_decls_in_stmts(try_stmt->final_statement);
5288 static int get_function_n_local_vars(declaration_t *declaration)
5292 /* count parameters */
5293 count += count_local_declarations(declaration->scope.declarations, NULL);
5295 /* count local variables declared in body */
5296 count += count_decls_in_stmts(declaration->init.statement);
5301 static void initialize_function_parameters(declaration_t *declaration)
5303 ir_graph *irg = current_ir_graph;
5304 ir_node *args = get_irg_args(irg);
5305 ir_node *start_block = get_irg_start_block(irg);
5306 ir_type *function_irtype = get_ir_type(declaration->type);
5309 declaration_t *parameter = declaration->scope.declarations;
5310 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5311 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5312 type_t *type = skip_typeref(parameter->type);
5314 bool needs_entity = parameter->address_taken;
5315 assert(!is_type_array(type));
5316 if (is_type_compound(type)) {
5317 needs_entity = true;
5321 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5322 ident *id = new_id_from_str(parameter->symbol->string);
5323 set_entity_ident(entity, id);
5325 parameter->declaration_kind
5326 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5327 parameter->v.entity = entity;
5331 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5332 ir_mode *param_mode = get_type_mode(param_irtype);
5335 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5337 ir_mode *mode = get_ir_mode(type);
5338 value = create_conv(NULL, value, mode);
5339 value = do_strict_conv(NULL, value);
5341 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5342 parameter->v.value_number = next_value_number_function;
5343 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5344 ++next_value_number_function;
5346 set_value(parameter->v.value_number, value);
5351 * Handle additional decl modifiers for IR-graphs
5353 * @param irg the IR-graph
5354 * @param dec_modifiers additional modifiers
5356 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5358 if (decl_modifiers & DM_NORETURN) {
5359 /* TRUE if the declaration includes the Microsoft
5360 __declspec(noreturn) specifier. */
5361 set_irg_additional_property(irg, mtp_property_noreturn);
5363 if (decl_modifiers & DM_NOTHROW) {
5364 /* TRUE if the declaration includes the Microsoft
5365 __declspec(nothrow) specifier. */
5366 set_irg_additional_property(irg, mtp_property_nothrow);
5368 if (decl_modifiers & DM_NAKED) {
5369 /* TRUE if the declaration includes the Microsoft
5370 __declspec(naked) specifier. */
5371 set_irg_additional_property(irg, mtp_property_naked);
5373 if (decl_modifiers & DM_FORCEINLINE) {
5374 /* TRUE if the declaration includes the
5375 Microsoft __forceinline specifier. */
5376 set_irg_inline_property(irg, irg_inline_forced);
5378 if (decl_modifiers & DM_NOINLINE) {
5379 /* TRUE if the declaration includes the Microsoft
5380 __declspec(noinline) specifier. */
5381 set_irg_inline_property(irg, irg_inline_forbidden);
5385 static void add_function_pointer(ir_type *segment, ir_entity *method,
5386 const char *unique_template)
5388 ir_type *method_type = get_entity_type(method);
5389 ident *id = id_unique(unique_template);
5390 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5392 ident *ide = id_unique(unique_template);
5393 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5394 ir_graph *irg = get_const_code_irg();
5395 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5398 set_entity_compiler_generated(ptr, 1);
5399 set_entity_variability(ptr, variability_constant);
5400 set_atomic_ent_value(ptr, val);
5404 * Generate possible IJmp branches to a given label block.
5406 static void gen_ijmp_branches(ir_node *block) {
5408 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5409 add_immBlock_pred(block, ijmp);
5414 * Create code for a function.
5416 static void create_function(declaration_t *declaration)
5418 ir_entity *function_entity = get_function_entity(declaration);
5420 if (declaration->init.statement == NULL)
5423 if (declaration->modifiers & DM_CONSTRUCTOR) {
5424 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5425 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5427 if (declaration->modifiers & DM_DESTRUCTOR) {
5428 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5429 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5432 current_function_decl = declaration;
5433 current_function_name = NULL;
5434 current_funcsig = NULL;
5436 assert(all_labels == NULL);
5437 all_labels = NEW_ARR_F(declaration_t *, 0);
5440 int n_local_vars = get_function_n_local_vars(declaration);
5441 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5443 ir_graph *old_current_function = current_function;
5444 current_function = irg;
5446 set_irg_fp_model(irg, firm_opt.fp_model);
5447 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5448 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5450 ir_node *first_block = get_cur_block();
5452 /* set inline flags */
5453 if (declaration->is_inline)
5454 set_irg_inline_property(irg, irg_inline_recomended);
5455 handle_decl_modifier_irg(irg, declaration->modifiers);
5457 next_value_number_function = 0;
5458 initialize_function_parameters(declaration);
5460 statement_to_firm(declaration->init.statement);
5462 ir_node *end_block = get_irg_end_block(irg);
5464 /* do we have a return statement yet? */
5465 if (get_cur_block() != NULL) {
5466 type_t *type = skip_typeref(declaration->type);
5467 assert(is_type_function(type));
5468 const function_type_t *func_type = &type->function;
5469 const type_t *return_type
5470 = skip_typeref(func_type->return_type);
5473 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5474 ret = new_Return(get_store(), 0, NULL);
5477 if (is_type_scalar(return_type)) {
5478 mode = get_ir_mode(func_type->return_type);
5484 /* ยง5.1.2.2.3 main implicitly returns 0 */
5485 if (strcmp(declaration->symbol->string, "main") == 0) {
5486 in[0] = new_Const(mode, get_mode_null(mode));
5488 in[0] = new_Unknown(mode);
5490 ret = new_Return(get_store(), 1, in);
5492 add_immBlock_pred(end_block, ret);
5495 bool has_computed_gotos = false;
5496 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5497 declaration_t *label = all_labels[i];
5498 if (label->address_taken) {
5499 gen_ijmp_branches(label->v.block);
5500 has_computed_gotos = true;
5502 mature_immBlock(label->v.block);
5504 if (has_computed_gotos) {
5505 /* if we have computed goto's in the function, we cannot inline it */
5506 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5507 warningf(&declaration->source_position,
5508 "function '%Y' can never be inlined because it contains a computed goto",
5509 declaration->symbol);
5511 set_irg_inline_property(irg, irg_inline_forbidden);
5514 DEL_ARR_F(all_labels);
5517 mature_immBlock(first_block);
5518 mature_immBlock(end_block);
5520 irg_finalize_cons(irg);
5522 /* finalize the frame type */
5523 ir_type *frame_type = get_irg_frame_type(irg);
5524 int n = get_compound_n_members(frame_type);
5527 for(int i = 0; i < n; ++i) {
5528 ir_entity *entity = get_compound_member(frame_type, i);
5529 ir_type *entity_type = get_entity_type(entity);
5531 int align = get_type_alignment_bytes(entity_type);
5532 if (align > align_all)
5536 misalign = offset % align;
5538 offset += align - misalign;
5542 set_entity_offset(entity, offset);
5543 offset += get_type_size_bytes(entity_type);
5545 set_type_size_bytes(frame_type, offset);
5546 set_type_alignment_bytes(frame_type, align_all);
5549 current_function = old_current_function;
5552 static void scope_to_firm(scope_t *scope)
5554 /* first pass: create declarations */
5555 declaration_t *declaration = scope->declarations;
5556 for( ; declaration != NULL; declaration = declaration->next) {
5557 if (declaration->namespc != NAMESPACE_NORMAL)
5559 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5560 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5562 if (declaration->symbol == NULL)
5565 type_t *type = skip_typeref(declaration->type);
5566 if (is_type_function(type)) {
5567 get_function_entity(declaration);
5569 create_global_variable(declaration);
5573 /* second pass: create code/initializers */
5574 declaration = scope->declarations;
5575 for( ; declaration != NULL; declaration = declaration->next) {
5576 if (declaration->namespc != NAMESPACE_NORMAL)
5578 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5579 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5581 if (declaration->symbol == NULL)
5584 type_t *type = declaration->type;
5585 if (type->kind == TYPE_FUNCTION) {
5586 create_function(declaration);
5587 declaration_t *inner;
5588 for (inner = next_inner_function(); inner != NULL;
5589 inner = next_inner_function())
5590 create_function(inner);
5592 assert(declaration->declaration_kind
5593 == DECLARATION_KIND_GLOBAL_VARIABLE);
5594 current_ir_graph = get_const_code_irg();
5595 create_declaration_initializer(declaration);
5600 static void set_be_option(const char *option)
5602 int res = firm_be_option(option);
5606 void init_ast2firm(void)
5608 obstack_init(&asm_obst);
5609 init_atomic_modes();
5611 id_underscore = new_id_from_chars("_", 1);
5612 id_imp = new_id_from_chars("__imp_", 6);
5614 /* OS option must be set to the backend */
5615 switch (firm_opt.os_support) {
5616 case OS_SUPPORT_MINGW:
5617 create_ld_ident = create_ld_ident_win32;
5618 set_be_option("ia32-gasmode=mingw");
5620 case OS_SUPPORT_LINUX:
5621 create_ld_ident = create_ld_ident_linux_elf;
5622 set_be_option("ia32-gasmode=elf");
5624 case OS_SUPPORT_MACHO:
5625 create_ld_ident = create_ld_ident_macho;
5626 set_be_option("ia32-gasmode=macho");
5627 set_be_option("ia32-stackalign=4");
5628 set_be_option("pic");
5632 /* create idents for all known runtime functions */
5633 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5634 rts_idents[i] = new_id_from_str(rts_data[i].name);
5637 entitymap_init(&entitymap);
5640 static void init_ir_types(void)
5642 static int ir_types_initialized = 0;
5643 if (ir_types_initialized)
5645 ir_types_initialized = 1;
5647 ir_type_int = get_ir_type(type_int);
5648 ir_type_const_char = get_ir_type(type_const_char);
5649 ir_type_wchar_t = get_ir_type(type_wchar_t);
5650 ir_type_void = get_ir_type(type_void);
5653 void exit_ast2firm(void)
5655 entitymap_destroy(&entitymap);
5656 obstack_free(&asm_obst, NULL);
5659 static void global_asm_to_firm(statement_t *s)
5661 for (; s != NULL; s = s->base.next) {
5662 assert(s->kind == STATEMENT_ASM);
5664 char const *const text = s->asms.asm_text.begin;
5665 size_t size = s->asms.asm_text.size;
5667 /* skip the last \0 */
5668 if (text[size - 1] == '\0')
5671 ident *const id = new_id_from_chars(text, size);
5676 void translation_unit_to_firm(translation_unit_t *unit)
5678 /* just to be sure */
5679 continue_label = NULL;
5681 current_switch_cond = NULL;
5685 scope_to_firm(&unit->scope);
5686 global_asm_to_firm(unit->global_asm);
5688 current_ir_graph = NULL;