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/be.h>
32 #include "adt/error.h"
33 #include "adt/array.h"
39 #include "diagnostic.h"
40 #include "lang_features.h"
43 #include "entitymap_t.h"
44 #include "driver/firm_opt.h"
45 #include "driver/firm_cmdline.h"
47 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
49 /* some idents needed for name mangling */
50 static ident *id_underscore;
53 static ir_type *ir_type_const_char;
54 static ir_type *ir_type_wchar_t;
55 static ir_type *ir_type_void;
56 static ir_type *ir_type_int;
58 static type_t *type_const_char;
60 static int next_value_number_function;
61 static ir_node *continue_label;
62 static ir_node *break_label;
63 static ir_node *current_switch_cond;
64 static bool saw_default_label;
65 static ir_node **imature_blocks;
66 static bool constant_folding;
68 static const declaration_t *current_function_decl;
69 static ir_node *current_function_name;
70 static ir_node *current_funcsig;
72 static entitymap_t entitymap;
74 static struct obstack asm_obst;
76 typedef enum declaration_kind_t {
77 DECLARATION_KIND_UNKNOWN,
78 DECLARATION_KIND_FUNCTION,
79 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
80 DECLARATION_KIND_GLOBAL_VARIABLE,
81 DECLARATION_KIND_LOCAL_VARIABLE,
82 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
83 DECLARATION_KIND_COMPOUND_MEMBER,
84 DECLARATION_KIND_LABEL_BLOCK,
85 DECLARATION_KIND_ENUM_ENTRY,
86 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
87 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
91 static ir_type *get_ir_type(type_t *type);
92 static ir_type *get_ir_type_incomplete(type_t *type);
93 static int count_decls_in_stmts(const statement_t *stmt);
95 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
97 const declaration_t *declaration = get_irg_loc_description(irg, pos);
99 warningf(&declaration->source_position,
100 "variable '%#T' might be used uninitialized",
101 declaration->type, declaration->symbol);
102 return new_r_Unknown(irg, mode);
105 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
107 const source_position_t *pos = (const source_position_t*) dbg;
110 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
114 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
116 const source_position_t *pos = (const source_position_t*) dbg;
121 return pos->input_name;
124 static dbg_info *get_dbg_info(const source_position_t *pos)
126 return (dbg_info*) pos;
129 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
131 static ir_mode *mode_int, *mode_uint;
133 static ir_node *_expression_to_firm(const expression_t *expression);
134 static ir_node *expression_to_firm(const expression_t *expression);
135 static inline ir_mode *get_ir_mode(type_t *type);
136 static void create_local_declaration(declaration_t *declaration);
138 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
140 unsigned flags = get_atomic_type_flags(kind);
141 unsigned size = get_atomic_type_size(kind);
142 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
143 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
146 unsigned bit_size = size * 8;
147 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
148 ir_mode_arithmetic arithmetic;
149 unsigned modulo_shift;
151 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
152 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
153 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
154 sort = irms_int_number;
155 arithmetic = irma_twos_complement;
156 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
158 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
159 snprintf(name, sizeof(name), "f%d", bit_size);
160 sort = irms_float_number;
161 arithmetic = irma_ieee754;
164 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
172 * Initialises the atomic modes depending on the machine size.
174 static void init_atomic_modes(void)
176 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
177 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
179 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
180 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
182 /* there's no real void type in firm */
183 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
185 /* initialize pointer modes */
187 ir_mode_sort sort = irms_reference;
188 unsigned bit_size = machine_size;
190 ir_mode_arithmetic arithmetic = irma_twos_complement;
191 unsigned modulo_shift
192 = bit_size < machine_size ? machine_size : bit_size;
194 snprintf(name, sizeof(name), "p%d", machine_size);
195 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
198 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
199 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
201 /* Hmm, pointers should be machine size */
202 set_modeP_data(ptr_mode);
203 set_modeP_code(ptr_mode);
206 static unsigned get_compound_type_size(compound_type_t *type)
208 ir_type *irtype = get_ir_type((type_t*) type);
209 return get_type_size_bytes(irtype);
212 static unsigned get_array_type_size(array_type_t *type)
214 assert(!type->is_vla);
215 ir_type *irtype = get_ir_type((type_t*) type);
216 return get_type_size_bytes(irtype);
220 static unsigned get_type_size_const(type_t *type)
224 panic("error type occurred");
226 return get_atomic_type_size(type->atomic.akind);
228 return 2 * get_atomic_type_size(type->complex.akind);
230 return get_atomic_type_size(type->imaginary.akind);
232 return get_mode_size_bytes(mode_int);
233 case TYPE_COMPOUND_UNION:
234 case TYPE_COMPOUND_STRUCT:
235 return get_compound_type_size(&type->compound);
237 /* just a pointer to the function */
238 return get_mode_size_bytes(mode_P_code);
240 return get_mode_size_bytes(mode_P_data);
242 return get_array_type_size(&type->array);
244 return get_type_size_const(type->builtin.real_type);
246 panic("type size of bitfield request");
252 panic("Trying to determine size of invalid type");
255 static ir_node *get_type_size(type_t *type)
257 type = skip_typeref(type);
259 if (is_type_array(type) && type->array.is_vla) {
260 ir_node *size_node = type->array.size_node;
261 if (size_node == NULL) {
262 size_node = expression_to_firm(type->array.size_expression);
263 assert(!is_Const(size_node));
264 type->array.size_node = size_node;
267 ir_node *elem_size = get_type_size(type->array.element_type);
268 ir_mode *mode = get_irn_mode(size_node);
269 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
273 ir_mode *mode = get_ir_mode(type_size_t);
275 sym.type_p = get_ir_type(type);
276 return new_SymConst(mode, sym, symconst_type_size);
279 static unsigned count_parameters(const function_type_t *function_type)
283 function_parameter_t *parameter = function_type->parameters;
284 for ( ; parameter != NULL; parameter = parameter->next) {
292 * Creates a Firm type for an atomic type
294 static ir_type *create_atomic_type(const atomic_type_t *type)
296 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
297 atomic_type_kind_t kind = type->akind;
298 ir_mode *mode = _atomic_modes[kind];
299 ident *id = get_mode_ident(mode);
300 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
302 set_type_alignment_bytes(irtype, type->base.alignment);
308 * Creates a Firm type for a complex type
310 static ir_type *create_complex_type(const complex_type_t *type)
312 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
313 atomic_type_kind_t kind = type->akind;
314 ir_mode *mode = _atomic_modes[kind];
315 ident *id = get_mode_ident(mode);
320 /* FIXME: finish the array */
325 * Creates a Firm type for an imaginary type
327 static ir_type *create_imaginary_type(const imaginary_type_t *type)
329 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
330 atomic_type_kind_t kind = type->akind;
331 ir_mode *mode = _atomic_modes[kind];
332 ident *id = get_mode_ident(mode);
333 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
335 set_type_alignment_bytes(irtype, type->base.alignment);
341 * return type of a parameter (and take transparent union gnu extension into
344 static type_t *get_parameter_type(type_t *type)
346 type = skip_typeref(type);
347 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
348 declaration_t *decl = type->compound.declaration;
349 type = decl->scope.declarations->type;
355 static ir_type *create_method_type(const function_type_t *function_type)
357 type_t *return_type = function_type->return_type;
359 ident *id = id_unique("functiontype.%u");
360 int n_parameters = count_parameters(function_type);
361 int n_results = return_type == type_void ? 0 : 1;
362 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
363 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
365 if (return_type != type_void) {
366 ir_type *restype = get_ir_type(return_type);
367 set_method_res_type(irtype, 0, restype);
370 function_parameter_t *parameter = function_type->parameters;
372 for ( ; parameter != NULL; parameter = parameter->next) {
373 type_t *type = get_parameter_type(parameter->type);
374 ir_type *p_irtype = get_ir_type(type);
375 set_method_param_type(irtype, n, p_irtype);
379 if (function_type->variadic || function_type->unspecified_parameters) {
380 set_method_variadicity(irtype, variadicity_variadic);
384 switch (function_type->calling_convention) {
385 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typical cdelc */
388 cc = get_method_calling_convention(irtype);
389 set_method_calling_convention(irtype, SET_CDECL(cc));
392 if (function_type->variadic || function_type->unspecified_parameters)
395 /* only non-variadic function can use stdcall, else use cdecl */
396 cc = get_method_calling_convention(irtype);
397 set_method_calling_convention(irtype, SET_STDCALL(cc));
400 if (function_type->variadic || function_type->unspecified_parameters)
402 /* only non-variadic function can use fastcall, else use cdecl */
403 cc = get_method_calling_convention(irtype);
404 set_method_calling_convention(irtype, SET_FASTCALL(cc));
407 /* Hmm, leave default, not accepted by the parser yet. */
408 warningf(&function_type->base.source_position, "THISCALL calling convention not supported yet");
414 static ir_type *create_pointer_type(pointer_type_t *type)
416 type_t *points_to = type->points_to;
417 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
418 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
419 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
420 ir_points_to, mode_P_data, dbgi);
425 static ir_type *create_array_type(array_type_t *type)
427 type_t *element_type = type->element_type;
428 ir_type *ir_element_type = get_ir_type(element_type);
430 ident *id = id_unique("array.%u");
431 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
432 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
434 const int align = get_type_alignment_bytes(ir_element_type);
435 set_type_alignment_bytes(ir_type, align);
437 if (type->size_constant) {
438 int n_elements = type->size;
440 set_array_bounds_int(ir_type, 0, 0, n_elements);
442 size_t elemsize = get_type_size_bytes(ir_element_type);
443 if (elemsize % align > 0) {
444 elemsize += align - (elemsize % align);
446 set_type_size_bytes(ir_type, n_elements * elemsize);
448 set_array_lower_bound_int(ir_type, 0, 0);
450 set_type_state(ir_type, layout_fixed);
456 * Return the signed integer type of size bits.
458 * @param size the size
460 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
463 static ir_mode *s_modes[64 + 1] = {NULL, };
467 if (size <= 0 || size > 64)
470 mode = s_modes[size];
474 snprintf(name, sizeof(name), "bf_I%u", size);
475 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
476 size <= 32 ? 32 : size );
477 s_modes[size] = mode;
481 snprintf(name, sizeof(name), "I%u", size);
482 ident *id = new_id_from_str(name);
483 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
484 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
485 set_primitive_base_type(res, base_tp);
491 * Return the unsigned integer type of size bits.
493 * @param size the size
495 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
498 static ir_mode *u_modes[64 + 1] = {NULL, };
502 if (size <= 0 || size > 64)
505 mode = u_modes[size];
509 snprintf(name, sizeof(name), "bf_U%u", size);
510 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
511 size <= 32 ? 32 : size );
512 u_modes[size] = mode;
517 snprintf(name, sizeof(name), "U%u", size);
518 ident *id = new_id_from_str(name);
519 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
520 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
521 set_primitive_base_type(res, base_tp);
526 static ir_type *create_bitfield_type(bitfield_type_t *const type)
528 type_t *base = skip_typeref(type->base_type);
529 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
530 ir_type *irbase = get_ir_type(base);
532 unsigned size = fold_constant(type->size);
534 assert(!is_type_float(base));
535 if (is_type_signed(base)) {
536 return get_signed_int_type_for_bit_size(irbase, size);
538 return get_unsigned_int_type_for_bit_size(irbase, size);
542 #define INVALID_TYPE ((ir_type_ptr)-1)
545 COMPOUND_IS_STRUCT = false,
546 COMPOUND_IS_UNION = true
550 * Construct firm type from ast struct type.
552 * As anonymous inner structs get flattened to a single firm type, we might get
553 * irtype, outer_offset and out_align passed (they represent the position of
554 * the anonymous inner struct inside the resulting firm struct)
556 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
557 size_t *outer_offset, size_t *outer_align,
558 bool incomplete, bool is_union)
560 declaration_t *declaration = type->declaration;
561 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
563 if (kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
564 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
566 return declaration->v.irtype;
568 size_t align_all = 1;
570 size_t bit_offset = 0;
573 if (irtype == NULL) {
574 symbol_t *symbol = declaration->symbol;
576 if (symbol != NULL) {
577 id = new_id_from_str(symbol->string);
580 id = id_unique("__anonymous_union.%u");
582 id = id_unique("__anonymous_struct.%u");
585 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
588 irtype = new_d_type_union(id, dbgi);
590 irtype = new_d_type_struct(id, dbgi);
593 declaration->declaration_kind
594 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
595 declaration->v.irtype = irtype;
596 //type->base.firm_type = irtype;
598 offset = *outer_offset;
599 align_all = *outer_align;
605 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
607 declaration_t *entry = declaration->scope.declarations;
608 for( ; entry != NULL; entry = entry->next) {
609 if (entry->namespc != NAMESPACE_NORMAL)
612 size_t prev_offset = offset;
614 symbol_t *symbol = entry->symbol;
615 type_t *entry_type = skip_typeref(entry->type);
616 dbg_info *dbgi = get_dbg_info(&entry->source_position);
619 if (symbol != NULL) {
620 ident = new_id_from_str(symbol->string);
622 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
623 create_compound_type(&entry_type->compound, irtype, &offset,
624 &align_all, false, COMPOUND_IS_STRUCT);
625 goto finished_member;
626 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
627 create_compound_type(&entry_type->compound, irtype, &offset,
628 &align_all, false, COMPOUND_IS_UNION);
629 goto finished_member;
631 assert(entry_type->kind == TYPE_BITFIELD);
633 ident = id_unique("anon.%u");
636 ir_type *base_irtype;
637 if (entry_type->kind == TYPE_BITFIELD) {
638 base_irtype = get_ir_type(entry_type->bitfield.base_type);
640 base_irtype = get_ir_type(entry_type);
643 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
644 size_t misalign = offset % entry_alignment;
646 ir_type *entry_irtype = get_ir_type(entry_type);
647 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
650 size_t bits_remainder;
651 if (entry_type->kind == TYPE_BITFIELD) {
652 size_t size_bits = fold_constant(entry_type->bitfield.size);
653 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
655 if (size_bits > rest_size_bits) {
656 /* start a new bucket */
657 offset += entry_alignment - misalign;
663 /* put into current bucket */
664 base = offset - misalign;
665 bits_remainder = misalign * 8 + bit_offset;
668 offset += size_bits / 8;
669 bit_offset = bit_offset + (size_bits % 8);
671 size_t entry_size = get_type_size_bytes(base_irtype);
672 if (misalign > 0 || bit_offset > 0)
673 offset += entry_alignment - misalign;
677 offset += entry_size;
681 if (entry_alignment > align_all) {
682 if (entry_alignment % align_all != 0) {
683 panic("uneven alignments not supported yet");
685 align_all = entry_alignment;
688 set_entity_offset(entity, base);
689 set_entity_offset_bits_remainder(entity,
690 (unsigned char) bits_remainder);
691 //add_struct_member(irtype, entity);
692 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
693 assert(entry->v.entity == NULL);
694 entry->v.entity = entity;
698 size_t entry_size = offset - prev_offset;
699 if (entry_size > size) {
711 size_t misalign = offset % align_all;
712 if (misalign > 0 || bit_offset > 0) {
713 size += align_all - misalign;
716 if (outer_offset != NULL) {
718 *outer_offset = offset;
720 *outer_offset += size;
723 if (align_all > *outer_align) {
724 if (align_all % *outer_align != 0) {
725 panic("uneven alignments not supported yet");
727 *outer_align = align_all;
730 set_type_alignment_bytes(irtype, align_all);
731 set_type_size_bytes(irtype, size);
732 set_type_state(irtype, layout_fixed);
738 static ir_type *create_enum_type(enum_type_t *const type)
740 type->base.firm_type = ir_type_int;
742 ir_mode *const mode = mode_int;
743 tarval *const one = get_mode_one(mode);
744 tarval * tv_next = get_tarval_null(mode);
746 bool constant_folding_old = constant_folding;
747 constant_folding = true;
749 declaration_t *declaration = type->declaration->next;
750 for (; declaration != NULL; declaration = declaration->next) {
751 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
754 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
756 expression_t *const init = declaration->init.enum_value;
758 ir_node *const cnst = expression_to_firm(init);
759 if (!is_Const(cnst)) {
760 panic("couldn't fold constant");
762 tv_next = get_Const_tarval(cnst);
764 declaration->v.enum_val = tv_next;
765 tv_next = tarval_add(tv_next, one);
768 constant_folding = constant_folding_old;
773 static ir_type *get_ir_type_incomplete(type_t *type)
775 assert(type != NULL);
776 type = skip_typeref(type);
778 if (type->base.firm_type != NULL) {
779 assert(type->base.firm_type != INVALID_TYPE);
780 return type->base.firm_type;
783 switch (type->kind) {
784 case TYPE_COMPOUND_STRUCT:
785 return create_compound_type(&type->compound, NULL, NULL, NULL,
786 true, COMPOUND_IS_STRUCT);
787 case TYPE_COMPOUND_UNION:
788 return create_compound_type(&type->compound, NULL, NULL, NULL,
789 true, COMPOUND_IS_UNION);
791 return get_ir_type(type);
795 static ir_type *get_ir_type(type_t *type)
797 assert(type != NULL);
799 type = skip_typeref(type);
801 if (type->base.firm_type != NULL) {
802 assert(type->base.firm_type != INVALID_TYPE);
803 return type->base.firm_type;
806 ir_type *firm_type = NULL;
807 switch (type->kind) {
809 panic("error type occurred");
811 firm_type = create_atomic_type(&type->atomic);
814 firm_type = create_complex_type(&type->complex);
817 firm_type = create_imaginary_type(&type->imaginary);
820 firm_type = create_method_type(&type->function);
823 firm_type = create_pointer_type(&type->pointer);
826 firm_type = create_array_type(&type->array);
828 case TYPE_COMPOUND_STRUCT:
829 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
830 false, COMPOUND_IS_STRUCT);
832 case TYPE_COMPOUND_UNION:
833 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
834 false, COMPOUND_IS_UNION);
837 firm_type = create_enum_type(&type->enumt);
840 firm_type = get_ir_type(type->builtin.real_type);
843 firm_type = create_bitfield_type(&type->bitfield);
851 if (firm_type == NULL)
852 panic("unknown type found");
854 type->base.firm_type = firm_type;
858 static inline ir_mode *get_ir_mode(type_t *type)
860 ir_type *irtype = get_ir_type(type);
862 /* firm doesn't report a mode for arrays somehow... */
863 if (is_Array_type(irtype)) {
867 ir_mode *mode = get_type_mode(irtype);
868 assert(mode != NULL);
872 /** Names of the runtime functions. */
873 static const struct {
874 int id; /**< the rts id */
875 int n_res; /**< number of return values */
876 const char *name; /**< the name of the rts function */
877 int n_params; /**< number of parameters */
878 unsigned flags; /**< language flags */
880 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
881 { rts_abort, 0, "abort", 0, _C89 },
882 { rts_alloca, 1, "alloca", 1, _ALL },
883 { rts_abs, 1, "abs", 1, _C89 },
884 { rts_labs, 1, "labs", 1, _C89 },
885 { rts_llabs, 1, "llabs", 1, _C99 },
886 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
888 { rts_fabs, 1, "fabs", 1, _C89 },
889 { rts_sqrt, 1, "sqrt", 1, _C89 },
890 { rts_cbrt, 1, "cbrt", 1, _C99 },
891 { rts_exp, 1, "exp", 1, _C89 },
892 { rts_exp2, 1, "exp2", 1, _C89 },
893 { rts_exp10, 1, "exp10", 1, _GNUC },
894 { rts_log, 1, "log", 1, _C89 },
895 { rts_log2, 1, "log2", 1, _C89 },
896 { rts_log10, 1, "log10", 1, _C89 },
897 { rts_pow, 1, "pow", 2, _C89 },
898 { rts_sin, 1, "sin", 1, _C89 },
899 { rts_cos, 1, "cos", 1, _C89 },
900 { rts_tan, 1, "tan", 1, _C89 },
901 { rts_asin, 1, "asin", 1, _C89 },
902 { rts_acos, 1, "acos", 1, _C89 },
903 { rts_atan, 1, "atan", 1, _C89 },
904 { rts_sinh, 1, "sinh", 1, _C89 },
905 { rts_cosh, 1, "cosh", 1, _C89 },
906 { rts_tanh, 1, "tanh", 1, _C89 },
908 { rts_fabsf, 1, "fabsf", 1, _C99 },
909 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
910 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
911 { rts_expf, 1, "expf", 1, _C99 },
912 { rts_exp2f, 1, "exp2f", 1, _C99 },
913 { rts_exp10f, 1, "exp10f", 1, _GNUC },
914 { rts_logf, 1, "logf", 1, _C99 },
915 { rts_log2f, 1, "log2f", 1, _C99 },
916 { rts_log10f, 1, "log10f", 1, _C99 },
917 { rts_powf, 1, "powf", 2, _C99 },
918 { rts_sinf, 1, "sinf", 1, _C99 },
919 { rts_cosf, 1, "cosf", 1, _C99 },
920 { rts_tanf, 1, "tanf", 1, _C99 },
921 { rts_asinf, 1, "asinf", 1, _C99 },
922 { rts_acosf, 1, "acosf", 1, _C99 },
923 { rts_atanf, 1, "atanf", 1, _C99 },
924 { rts_sinhf, 1, "sinhf", 1, _C99 },
925 { rts_coshf, 1, "coshf", 1, _C99 },
926 { rts_tanhf, 1, "tanhf", 1, _C99 },
928 { rts_fabsl, 1, "fabsl", 1, _C99 },
929 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
930 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
931 { rts_expl, 1, "expl", 1, _C99 },
932 { rts_exp2l, 1, "exp2l", 1, _C99 },
933 { rts_exp10l, 1, "exp10l", 1, _GNUC },
934 { rts_logl, 1, "logl", 1, _C99 },
935 { rts_log2l, 1, "log2l", 1, _C99 },
936 { rts_log10l, 1, "log10l", 1, _C99 },
937 { rts_powl, 1, "powl", 2, _C99 },
938 { rts_sinl, 1, "sinl", 1, _C99 },
939 { rts_cosl, 1, "cosl", 1, _C99 },
940 { rts_tanl, 1, "tanl", 1, _C99 },
941 { rts_asinl, 1, "asinl", 1, _C99 },
942 { rts_acosl, 1, "acosl", 1, _C99 },
943 { rts_atanl, 1, "atanl", 1, _C99 },
944 { rts_sinhl, 1, "sinhl", 1, _C99 },
945 { rts_coshl, 1, "coshl", 1, _C99 },
946 { rts_tanhl, 1, "tanhl", 1, _C99 },
948 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
949 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
950 { rts_strcmp, 1, "strcmp", 2, _C89 },
951 { rts_strncmp, 1, "strncmp", 3, _C89 }
954 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
957 * Mangles an entity linker (ld) name for win32 usage.
959 * @param ent the entity to be mangled
960 * @param declaration the declaration
962 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
966 if (is_Method_type(get_entity_type(ent)))
967 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
969 /* always add an underscore in win32 */
970 id = mangle(id_underscore, get_entity_ident(ent));
973 decl_modifiers_t decl_modifiers = declaration->modifiers;
974 if (decl_modifiers & DM_DLLIMPORT) {
975 /* add prefix for imported symbols */
976 id = mangle(id_imp, id);
982 * Mangles an entity linker (ld) name for Linux ELF usage.
984 * @param ent the entity to be mangled
985 * @param declaration the declaration
987 static ident *create_ld_ident_linux_elf(ir_entity *entity,
988 declaration_t *declaration)
991 return get_entity_ident(entity);
995 * Mangles an entity linker (ld) name for Mach-O usage.
997 * @param ent the entity to be mangled
998 * @param declaration the declaration
1000 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
1003 ident *id = mangle(id_underscore, get_entity_ident(ent));
1007 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
1008 declaration_t *declaration);
1009 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1012 * Handle GNU attributes for entities
1014 * @param ent the entity
1015 * @param decl the routine declaration
1017 static void handle_gnu_attributes_ent(ir_entity *ent, declaration_t *decl)
1019 if (decl->modifiers & DM_PURE) {
1020 /* TRUE if the declaration includes the GNU
1021 __attribute__((pure)) specifier. */
1022 set_entity_additional_property(ent, mtp_property_pure);
1024 if (decl->modifiers & DM_USED) {
1025 /* TRUE if the declaration includes the GNU
1026 __attribute__((used)) specifier. */
1027 set_entity_stickyness(ent, stickyness_sticky);
1032 * Creates an entity representing a function.
1034 * @param declaration the function declaration
1036 static ir_entity *get_function_entity(declaration_t *declaration)
1038 if (declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
1039 return declaration->v.entity;
1040 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
1042 symbol_t *symbol = declaration->symbol;
1043 ident *id = new_id_from_str(symbol->string);
1045 ir_type *global_type = get_glob_type();
1046 ir_type *ir_type_method = get_ir_type(declaration->type);
1047 assert(is_Method_type(ir_type_method));
1049 /* already an entity defined? */
1050 ir_entity *entity = entitymap_get(&entitymap, symbol);
1051 if (entity != NULL) {
1052 if (get_entity_visibility(entity) == visibility_external_allocated
1053 && declaration->init.statement != NULL) {
1054 set_entity_visibility(entity, visibility_external_visible);
1056 goto entity_created;
1059 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
1060 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
1061 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
1063 handle_gnu_attributes_ent(entity, declaration);
1065 /* static inline => local
1066 * extern inline => local
1067 * inline without definition => local
1068 * inline with definition => external_visible */
1069 storage_class_tag_t const storage_class = declaration->storage_class;
1070 bool const is_inline = declaration->is_inline;
1071 bool const has_body = declaration->init.statement != NULL;
1072 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1073 set_entity_visibility(entity, visibility_external_visible);
1074 } else if (storage_class == STORAGE_CLASS_STATIC ||
1075 (is_inline && has_body)) {
1077 /* this entity was declared, but is defined nowhere */
1078 set_entity_peculiarity(entity, peculiarity_description);
1080 set_entity_visibility(entity, visibility_local);
1081 } else if (has_body) {
1082 set_entity_visibility(entity, visibility_external_visible);
1084 set_entity_visibility(entity, visibility_external_allocated);
1086 set_entity_allocation(entity, allocation_static);
1088 /* We should check for file scope here, but as long as we compile C only
1089 this is not needed. */
1090 if (! firm_opt.freestanding) {
1091 /* check for a known runtime function */
1092 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1093 if (id != rts_idents[i])
1096 /* ignore those rts functions not necessary needed for current mode */
1097 if ((c_mode & rts_data[i].flags) == 0)
1099 assert(rts_entities[rts_data[i].id] == NULL);
1100 rts_entities[rts_data[i].id] = entity;
1104 entitymap_insert(&entitymap, symbol, entity);
1107 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1108 declaration->v.entity = entity;
1114 * Creates a Const node representing a constant.
1116 static ir_node *const_to_firm(const const_expression_t *cnst)
1118 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1119 ir_mode *mode = get_ir_mode(cnst->base.type);
1124 if (mode_is_float(mode)) {
1125 tv = new_tarval_from_double(cnst->v.float_value, mode);
1127 if (mode_is_signed(mode)) {
1128 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1130 len = snprintf(buf, sizeof(buf), "%llu",
1131 (unsigned long long) cnst->v.int_value);
1133 tv = new_tarval_from_str(buf, len, mode);
1136 return new_d_Const(dbgi, mode, tv);
1140 * Creates a Const node representing a character constant.
1142 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1144 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1145 ir_mode *mode = get_ir_mode(cnst->base.type);
1147 long long int v = 0;
1148 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1149 if (char_is_signed) {
1150 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1152 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1156 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1157 tarval *tv = new_tarval_from_str(buf, len, mode);
1159 return new_d_Const(dbgi, mode, tv);
1163 * Creates a Const node representing a wide character constant.
1165 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1167 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1168 ir_mode *mode = get_ir_mode(cnst->base.type);
1170 long long int v = cnst->v.wide_character.begin[0];
1173 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1174 tarval *tv = new_tarval_from_str(buf, len, mode);
1176 return new_d_Const(dbgi, mode, tv);
1180 * Creates a SymConst for a given entity.
1182 * @param dbgi debug info
1183 * @param mode the (reference) mode for the SymConst
1184 * @param entity the entity
1186 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1189 assert(entity != NULL);
1190 union symconst_symbol sym;
1191 sym.entity_p = entity;
1192 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1196 * Creates a SymConst node representing a string constant.
1198 * @param src_pos the source position of the string constant
1199 * @param id_prefix a prefix for the name of the generated string constant
1200 * @param value the value of the string constant
1202 static ir_node *string_to_firm(const source_position_t *const src_pos,
1203 const char *const id_prefix,
1204 const string_t *const value)
1206 ir_type *const global_type = get_glob_type();
1207 dbg_info *const dbgi = get_dbg_info(src_pos);
1208 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1209 ir_type_const_char, dbgi);
1211 ident *const id = id_unique(id_prefix);
1212 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1213 set_entity_ld_ident(entity, id);
1214 set_entity_variability(entity, variability_constant);
1215 set_entity_allocation(entity, allocation_static);
1217 ir_type *const elem_type = ir_type_const_char;
1218 ir_mode *const mode = get_type_mode(elem_type);
1220 const char* const string = value->begin;
1221 const size_t slen = value->size;
1223 set_array_lower_bound_int(type, 0, 0);
1224 set_array_upper_bound_int(type, 0, slen);
1225 set_type_size_bytes(type, slen);
1226 set_type_state(type, layout_fixed);
1228 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1229 for(size_t i = 0; i < slen; ++i) {
1230 tvs[i] = new_tarval_from_long(string[i], mode);
1233 set_array_entity_values(entity, tvs, slen);
1236 return create_symconst(dbgi, mode_P_data, entity);
1240 * Creates a SymConst node representing a string literal.
1242 * @param literal the string literal
1244 static ir_node *string_literal_to_firm(
1245 const string_literal_expression_t* literal)
1247 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1252 * Creates a SymConst node representing a wide string literal.
1254 * @param literal the wide string literal
1256 static ir_node *wide_string_literal_to_firm(
1257 const wide_string_literal_expression_t* const literal)
1259 ir_type *const global_type = get_glob_type();
1260 ir_type *const elem_type = ir_type_wchar_t;
1261 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1262 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1265 ident *const id = id_unique("Lstr.%u");
1266 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1267 set_entity_ld_ident(entity, id);
1268 set_entity_variability(entity, variability_constant);
1269 set_entity_allocation(entity, allocation_static);
1271 ir_mode *const mode = get_type_mode(elem_type);
1273 const wchar_rep_t *const string = literal->value.begin;
1274 const size_t slen = literal->value.size;
1276 set_array_lower_bound_int(type, 0, 0);
1277 set_array_upper_bound_int(type, 0, slen);
1278 set_type_size_bytes(type, slen);
1279 set_type_state(type, layout_fixed);
1281 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1282 for(size_t i = 0; i < slen; ++i) {
1283 tvs[i] = new_tarval_from_long(string[i], mode);
1286 set_array_entity_values(entity, tvs, slen);
1289 return create_symconst(dbgi, mode_P_data, entity);
1292 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1293 ir_node *const addr)
1295 ir_type *irtype = get_ir_type(type);
1296 if (is_compound_type(irtype)
1297 || is_Method_type(irtype)
1298 || is_Array_type(irtype)) {
1302 ir_mode *const mode = get_type_mode(irtype);
1303 ir_node *const memory = get_store();
1304 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1305 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1306 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1308 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1309 set_Load_volatility(load, volatility_is_volatile);
1312 set_store(load_mem);
1317 * Creates a strict Conv if neccessary.
1319 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1321 ir_mode *mode = get_irn_mode(node);
1323 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1325 if (!mode_is_float(mode))
1328 /* check if there is already a Conv */
1329 if (is_Conv(node)) {
1330 /* convert it into a strict Conv */
1331 set_Conv_strict(node, 1);
1335 /* otherwise create a new one */
1336 return new_d_strictConv(dbgi, node, mode);
1339 static ir_node *get_global_var_address(dbg_info *const dbgi,
1340 const declaration_t *const decl)
1342 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1344 ir_entity *const entity = decl->v.entity;
1345 switch ((storage_class_tag_t)decl->storage_class) {
1346 case STORAGE_CLASS_THREAD:
1347 case STORAGE_CLASS_THREAD_EXTERN:
1348 case STORAGE_CLASS_THREAD_STATIC: {
1349 ir_node *const no_mem = new_NoMem();
1350 ir_node *const tls = get_irg_tls(current_ir_graph);
1351 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1355 return create_symconst(dbgi, mode_P_data, entity);
1360 * Returns the correct base address depending on whether it is a parameter or a
1361 * normal local variable.
1363 static ir_node *get_local_frame(ir_entity *const ent)
1365 ir_graph *const irg = current_ir_graph;
1366 const ir_type *const owner = get_entity_owner(ent);
1367 if (owner == get_irg_frame_type(irg)) {
1368 return get_irg_frame(irg);
1370 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1371 return get_irg_value_param_base(irg);
1375 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1377 ir_mode *value_mode = get_irn_mode(value);
1379 if (value_mode == dest_mode || is_Bad(value))
1382 if (dest_mode == mode_b) {
1383 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1384 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1385 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1389 return new_d_Conv(dbgi, value, dest_mode);
1392 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1394 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1395 declaration_t *declaration = ref->declaration;
1396 type_t *type = skip_typeref(declaration->type);
1398 /* make sure the type is constructed */
1399 (void) get_ir_type(type);
1401 switch((declaration_kind_t) declaration->declaration_kind) {
1402 case DECLARATION_KIND_TYPE:
1403 case DECLARATION_KIND_UNKNOWN:
1406 case DECLARATION_KIND_ENUM_ENTRY: {
1407 ir_mode *const mode = get_ir_mode(type);
1408 return new_Const(mode, declaration->v.enum_val);
1411 case DECLARATION_KIND_LOCAL_VARIABLE: {
1412 ir_mode *const mode = get_ir_mode(type);
1413 return get_value(declaration->v.value_number, mode);
1415 case DECLARATION_KIND_FUNCTION: {
1416 ir_mode *const mode = get_ir_mode(type);
1417 return create_symconst(dbgi, mode, declaration->v.entity);
1419 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1420 ir_node *const addr = get_global_var_address(dbgi, declaration);
1421 return deref_address(dbgi, declaration->type, addr);
1424 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1425 ir_entity *entity = declaration->v.entity;
1426 ir_node *frame = get_local_frame(entity);
1427 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1428 return deref_address(dbgi, declaration->type, sel);
1431 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1432 return declaration->v.vla_base;
1434 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1435 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1436 case DECLARATION_KIND_COMPOUND_MEMBER:
1437 case DECLARATION_KIND_LABEL_BLOCK:
1438 panic("not implemented reference type");
1441 panic("reference to declaration with unknown type found");
1444 static ir_node *reference_addr(const reference_expression_t *ref)
1446 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1447 declaration_t *declaration = ref->declaration;
1449 switch((declaration_kind_t) declaration->declaration_kind) {
1450 case DECLARATION_KIND_TYPE:
1451 case DECLARATION_KIND_UNKNOWN:
1453 case DECLARATION_KIND_LOCAL_VARIABLE:
1454 /* you can store to a local variable (so we don't panic but return NULL
1455 * as an indicator for no real address) */
1457 case DECLARATION_KIND_FUNCTION: {
1458 type_t *const type = skip_typeref(ref->base.type);
1459 ir_mode *const mode = get_ir_mode(type);
1460 return create_symconst(dbgi, mode, declaration->v.entity);
1462 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1463 ir_node *const addr = get_global_var_address(dbgi, declaration);
1466 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1467 ir_entity *entity = declaration->v.entity;
1468 ir_node *frame = get_local_frame(entity);
1469 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1474 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1475 return declaration->v.vla_base;
1477 case DECLARATION_KIND_ENUM_ENTRY:
1478 panic("trying to reference enum entry");
1480 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1481 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1482 case DECLARATION_KIND_COMPOUND_MEMBER:
1483 case DECLARATION_KIND_LABEL_BLOCK:
1484 panic("not implemented reference type");
1487 panic("reference to declaration with unknown type found");
1491 * Transform calls to builtin functions.
1493 static ir_node *process_builtin_call(const call_expression_t *call)
1495 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1497 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1498 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1500 type_t *type = skip_typeref(builtin->base.type);
1501 assert(is_type_pointer(type));
1503 type_t *function_type = skip_typeref(type->pointer.points_to);
1504 symbol_t *symbol = builtin->symbol;
1506 switch(symbol->ID) {
1507 case T___builtin_alloca: {
1508 if (call->arguments == NULL || call->arguments->next != NULL) {
1509 panic("invalid number of parameters on __builtin_alloca");
1511 expression_t *argument = call->arguments->expression;
1512 ir_node *size = expression_to_firm(argument);
1514 ir_node *store = get_store();
1515 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1517 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1519 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1523 case T___builtin_huge_val: {
1524 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1525 tarval *tv = get_mode_infinite(mode);
1526 ir_node *res = new_d_Const(dbgi, mode, tv);
1529 case T___builtin_nan:
1530 case T___builtin_nanf:
1531 case T___builtin_nand: {
1532 /* Ignore string for now... */
1533 assert(is_type_function(function_type));
1534 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1535 tarval *tv = get_mode_NAN(mode);
1536 ir_node *res = new_d_Const(dbgi, mode, tv);
1539 case T___builtin_va_end:
1542 panic("Unsupported builtin found\n");
1547 * Transform a call expression.
1548 * Handles some special cases, like alloca() calls, which must be resolved
1549 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1550 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1553 static ir_node *call_expression_to_firm(const call_expression_t *call)
1555 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1556 assert(get_cur_block() != NULL);
1558 expression_t *function = call->function;
1559 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1560 return process_builtin_call(call);
1562 if (function->kind == EXPR_REFERENCE) {
1563 const reference_expression_t *ref = &function->reference;
1564 declaration_t *declaration = ref->declaration;
1566 if ((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1567 if (declaration->v.entity == rts_entities[rts_alloca]) {
1568 /* handle alloca() call */
1569 expression_t *argument = call->arguments->expression;
1570 ir_node *size = expression_to_firm(argument);
1572 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1574 ir_node *store = get_store();
1575 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1576 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1578 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1580 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1586 ir_node *callee = expression_to_firm(function);
1588 type_t *type = skip_typeref(function->base.type);
1589 assert(is_type_pointer(type));
1590 pointer_type_t *pointer_type = &type->pointer;
1591 type_t *points_to = skip_typeref(pointer_type->points_to);
1592 assert(is_type_function(points_to));
1593 function_type_t *function_type = &points_to->function;
1595 int n_parameters = 0;
1596 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1597 ir_type *new_method_type = NULL;
1598 if (function_type->variadic || function_type->unspecified_parameters) {
1599 const call_argument_t *argument = call->arguments;
1600 for( ; argument != NULL; argument = argument->next) {
1604 /* we need to construct a new method type matching the call
1606 int n_res = get_method_n_ress(ir_method_type);
1607 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1608 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1609 n_parameters, n_res, dbgi);
1610 set_method_calling_convention(new_method_type,
1611 get_method_calling_convention(ir_method_type));
1612 set_method_additional_properties(new_method_type,
1613 get_method_additional_properties(ir_method_type));
1614 set_method_variadicity(new_method_type,
1615 get_method_variadicity(ir_method_type));
1617 for(int i = 0; i < n_res; ++i) {
1618 set_method_res_type(new_method_type, i,
1619 get_method_res_type(ir_method_type, i));
1621 argument = call->arguments;
1622 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1623 expression_t *expression = argument->expression;
1624 ir_type *irtype = get_ir_type(expression->base.type);
1625 set_method_param_type(new_method_type, i, irtype);
1627 ir_method_type = new_method_type;
1629 n_parameters = get_method_n_params(ir_method_type);
1632 ir_node *in[n_parameters];
1634 const call_argument_t *argument = call->arguments;
1635 for(int n = 0; n < n_parameters; ++n) {
1636 expression_t *expression = argument->expression;
1637 ir_node *arg_node = expression_to_firm(expression);
1639 arg_node = do_strict_conv(dbgi, arg_node);
1643 argument = argument->next;
1646 ir_node *store = get_store();
1647 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1649 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1652 type_t *return_type = skip_typeref(function_type->return_type);
1653 ir_node *result = NULL;
1655 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1657 if (is_type_scalar(return_type)) {
1658 mode = get_ir_mode(return_type);
1662 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1663 result = new_d_Proj(dbgi, resproj, mode, 0);
1669 static void statement_to_firm(statement_t *statement);
1670 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1672 static ir_node *expression_to_addr(const expression_t *expression);
1673 static void create_condition_evaluation(const expression_t *expression,
1674 ir_node *true_block,
1675 ir_node *false_block);
1677 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1680 value = do_strict_conv(dbgi, value);
1682 ir_node *memory = get_store();
1684 if (is_type_scalar(type)) {
1685 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1686 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1687 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1688 set_Store_volatility(store, volatility_is_volatile);
1689 set_store(store_mem);
1691 ir_type *irtype = get_ir_type(type);
1692 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1693 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1694 set_store(copyb_mem);
1698 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1700 tarval *all_one = get_mode_all_one(mode);
1701 int mode_size = get_mode_size_bits(mode);
1703 assert(offset >= 0 && size >= 0);
1704 assert(offset + size <= mode_size);
1705 if (size == mode_size) {
1709 long shiftr = get_mode_size_bits(mode) - size;
1710 long shiftl = offset;
1711 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1712 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1713 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1714 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1719 static void bitfield_store_to_firm(const select_expression_t *expression,
1720 ir_node *addr, ir_node *value)
1722 type_t *type = expression->base.type;
1723 ir_mode *mode = get_ir_mode(type);
1725 assert(get_irn_mode(value) == mode || is_Bad(value));
1727 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1729 /* kill upper bits of value and shift to right position */
1730 ir_entity *entity = expression->compound_entry->v.entity;
1731 int bitoffset = get_entity_offset_bits_remainder(entity);
1732 ir_type *entity_type = get_entity_type(entity);
1733 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1735 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1736 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1737 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1738 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1739 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1740 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1742 /* load current value */
1743 ir_node *mem = get_store();
1744 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1745 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1746 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1747 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1748 tarval *inv_mask = tarval_not(shift_mask);
1749 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1750 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1752 /* construct new value and store */
1753 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1754 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1755 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1756 set_store(store_mem);
1758 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1759 set_Load_volatility(load, volatility_is_volatile);
1760 set_Store_volatility(store, volatility_is_volatile);
1764 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1767 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1768 type_t *type = expression->base.type;
1769 ir_mode *mode = get_ir_mode(type);
1770 ir_node *mem = get_store();
1771 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1772 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1773 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1775 load_res = create_conv(dbgi, load_res, mode_int);
1777 set_store(load_mem);
1779 /* kill upper bits */
1780 ir_entity *entity = expression->compound_entry->v.entity;
1781 int bitoffset = get_entity_offset_bits_remainder(entity);
1782 ir_type *entity_type = get_entity_type(entity);
1783 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1784 long shift_bitsl = machine_size - bitoffset - bitsize;
1785 assert(shift_bitsl >= 0);
1786 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1787 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1788 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1790 long shift_bitsr = bitoffset + shift_bitsl;
1791 assert(shift_bitsr <= (long) machine_size);
1792 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1793 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1795 if (mode_is_signed(mode)) {
1796 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1798 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1801 return create_conv(dbgi, shiftr, mode);
1804 static void set_value_for_expression_addr(const expression_t *expression,
1805 ir_node *value, ir_node *addr)
1807 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1808 value = do_strict_conv(dbgi, value);
1810 if (expression->kind == EXPR_REFERENCE) {
1811 const reference_expression_t *ref = &expression->reference;
1813 declaration_t *declaration = ref->declaration;
1814 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1815 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1816 set_value(declaration->v.value_number, value);
1822 addr = expression_to_addr(expression);
1824 type_t *type = skip_typeref(expression->base.type);
1826 if (expression->kind == EXPR_SELECT) {
1827 const select_expression_t *select = &expression->select;
1829 declaration_t *declaration = select->compound_entry;
1830 if (declaration->type->kind == TYPE_BITFIELD) {
1831 bitfield_store_to_firm(select, addr, value);
1836 assign_value(dbgi, addr, type, value);
1839 static void set_value_for_expression(const expression_t *expression,
1842 set_value_for_expression_addr(expression, value, NULL);
1845 static ir_node *get_value_from_lvalue(const expression_t *expression,
1848 if (expression->kind == EXPR_REFERENCE) {
1849 const reference_expression_t *ref = &expression->reference;
1851 declaration_t *declaration = ref->declaration;
1852 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1853 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1854 assert(addr == NULL);
1855 ir_mode *mode = get_ir_mode(expression->base.type);
1856 return get_value(declaration->v.value_number, mode);
1860 assert(addr != NULL);
1861 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1864 if (expression->kind == EXPR_SELECT &&
1865 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1866 value = bitfield_extract_to_firm(&expression->select, addr);
1868 value = deref_address(dbgi, expression->base.type, addr);
1875 static ir_node *create_incdec(const unary_expression_t *expression)
1877 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1878 const expression_t *value_expr = expression->value;
1879 ir_node *addr = expression_to_addr(value_expr);
1880 ir_node *value = get_value_from_lvalue(value_expr, addr);
1882 type_t *type = skip_typeref(expression->base.type);
1883 ir_mode *mode = get_ir_mode(expression->base.type);
1886 if (is_type_pointer(type)) {
1887 pointer_type_t *pointer_type = &type->pointer;
1888 offset = get_type_size(pointer_type->points_to);
1890 assert(is_type_arithmetic(type));
1891 offset = new_Const(mode, get_mode_one(mode));
1895 ir_node *store_value;
1896 switch(expression->base.kind) {
1897 case EXPR_UNARY_POSTFIX_INCREMENT:
1899 store_value = new_d_Add(dbgi, value, offset, mode);
1901 case EXPR_UNARY_POSTFIX_DECREMENT:
1903 store_value = new_d_Sub(dbgi, value, offset, mode);
1905 case EXPR_UNARY_PREFIX_INCREMENT:
1906 result = new_d_Add(dbgi, value, offset, mode);
1907 store_value = result;
1909 case EXPR_UNARY_PREFIX_DECREMENT:
1910 result = new_d_Sub(dbgi, value, offset, mode);
1911 store_value = result;
1914 panic("no incdec expr in create_incdec");
1917 set_value_for_expression_addr(value_expr, store_value, addr);
1922 static bool is_local_variable(expression_t *expression)
1924 if (expression->kind != EXPR_REFERENCE)
1926 reference_expression_t *ref_expr = &expression->reference;
1927 declaration_t *declaration = ref_expr->declaration;
1928 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1931 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1934 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1935 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1936 case EXPR_BINARY_NOTEQUAL:
1937 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1938 case EXPR_BINARY_ISLESS:
1939 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1940 case EXPR_BINARY_ISLESSEQUAL:
1941 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1942 case EXPR_BINARY_ISGREATER:
1943 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1944 case EXPR_BINARY_ISGREATEREQUAL:
1945 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1946 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1951 panic("trying to get pn_Cmp from non-comparison binexpr type");
1955 * Handle the assume optimizer hint: check if a Confirm
1956 * node can be created.
1958 * @param dbi debug info
1959 * @param expr the IL assume expression
1961 * we support here only some simple cases:
1966 static ir_node *handle_assume_compare(dbg_info *dbi,
1967 const binary_expression_t *expression)
1969 expression_t *op1 = expression->left;
1970 expression_t *op2 = expression->right;
1971 declaration_t *var2, *var = NULL;
1972 ir_node *res = NULL;
1975 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1977 if (is_local_variable(op1) && is_local_variable(op2)) {
1978 var = op1->reference.declaration;
1979 var2 = op2->reference.declaration;
1981 type_t *const type = skip_typeref(var->type);
1982 ir_mode *const mode = get_ir_mode(type);
1984 ir_node *const irn1 = get_value(var->v.value_number, mode);
1985 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1987 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1988 set_value(var2->v.value_number, res);
1990 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1991 set_value(var->v.value_number, res);
1997 if (is_local_variable(op1) && is_constant_expression(op2)) {
1998 var = op1->reference.declaration;
2000 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2001 cmp_val = get_inversed_pnc(cmp_val);
2002 var = op2->reference.declaration;
2007 type_t *const type = skip_typeref(var->type);
2008 ir_mode *const mode = get_ir_mode(type);
2010 res = get_value(var->v.value_number, mode);
2011 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2012 set_value(var->v.value_number, res);
2018 * Handle the assume optimizer hint.
2020 * @param dbi debug info
2021 * @param expr the IL assume expression
2023 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2024 switch(expression->kind) {
2025 case EXPR_BINARY_EQUAL:
2026 case EXPR_BINARY_NOTEQUAL:
2027 case EXPR_BINARY_LESS:
2028 case EXPR_BINARY_LESSEQUAL:
2029 case EXPR_BINARY_GREATER:
2030 case EXPR_BINARY_GREATEREQUAL:
2031 return handle_assume_compare(dbi, &expression->binary);
2037 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2039 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2040 type_t *type = skip_typeref(expression->base.type);
2042 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2043 return expression_to_addr(expression->value);
2045 const expression_t *value = expression->value;
2047 switch(expression->base.kind) {
2048 case EXPR_UNARY_NEGATE: {
2049 ir_node *value_node = expression_to_firm(value);
2050 ir_mode *mode = get_ir_mode(type);
2051 return new_d_Minus(dbgi, value_node, mode);
2053 case EXPR_UNARY_PLUS:
2054 return expression_to_firm(value);
2055 case EXPR_UNARY_BITWISE_NEGATE: {
2056 ir_node *value_node = expression_to_firm(value);
2057 ir_mode *mode = get_ir_mode(type);
2058 return new_d_Not(dbgi, value_node, mode);
2060 case EXPR_UNARY_NOT: {
2061 ir_node *value_node = _expression_to_firm(value);
2062 value_node = create_conv(dbgi, value_node, mode_b);
2063 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2066 case EXPR_UNARY_DEREFERENCE: {
2067 ir_node *value_node = expression_to_firm(value);
2068 type_t *value_type = skip_typeref(value->base.type);
2069 assert(is_type_pointer(value_type));
2070 type_t *points_to = value_type->pointer.points_to;
2071 return deref_address(dbgi, points_to, value_node);
2073 case EXPR_UNARY_POSTFIX_INCREMENT:
2074 case EXPR_UNARY_POSTFIX_DECREMENT:
2075 case EXPR_UNARY_PREFIX_INCREMENT:
2076 case EXPR_UNARY_PREFIX_DECREMENT:
2077 return create_incdec(expression);
2078 case EXPR_UNARY_CAST: {
2079 ir_node *value_node = expression_to_firm(value);
2080 if (is_type_scalar(type)) {
2081 ir_mode *mode = get_ir_mode(type);
2082 ir_node *node = create_conv(dbgi, value_node, mode);
2083 node = do_strict_conv(dbgi, node);
2086 /* make sure firm type is constructed */
2087 (void) get_ir_type(type);
2091 case EXPR_UNARY_CAST_IMPLICIT: {
2092 ir_node *value_node = expression_to_firm(value);
2093 if (is_type_scalar(type)) {
2094 ir_mode *mode = get_ir_mode(type);
2095 return create_conv(dbgi, value_node, mode);
2100 case EXPR_UNARY_ASSUME:
2101 if (firm_opt.confirm)
2102 return handle_assume(dbgi, value);
2109 panic("invalid UNEXPR type found");
2113 * produces a 0/1 depending of the value of a mode_b node
2115 static ir_node *produce_condition_result(const expression_t *expression,
2118 ir_mode *mode = get_ir_mode(expression->base.type);
2119 ir_node *cur_block = get_cur_block();
2121 ir_node *one_block = new_immBlock();
2122 ir_node *one = new_Const(mode, get_mode_one(mode));
2123 ir_node *jmp_one = new_d_Jmp(dbgi);
2125 ir_node *zero_block = new_immBlock();
2126 ir_node *zero = new_Const(mode, get_mode_null(mode));
2127 ir_node *jmp_zero = new_d_Jmp(dbgi);
2129 set_cur_block(cur_block);
2130 create_condition_evaluation(expression, one_block, zero_block);
2131 mature_immBlock(one_block);
2132 mature_immBlock(zero_block);
2134 ir_node *common_block = new_immBlock();
2135 add_immBlock_pred(common_block, jmp_one);
2136 add_immBlock_pred(common_block, jmp_zero);
2137 mature_immBlock(common_block);
2139 ir_node *in[2] = { one, zero };
2140 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2145 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2146 ir_node *value, type_t *type)
2148 pointer_type_t *const pointer_type = &type->pointer;
2149 type_t *const points_to = skip_typeref(pointer_type->points_to);
2150 unsigned elem_size = get_type_size_const(points_to);
2153 if (elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) {
2157 assert(elem_size >= 1);
2161 value = create_conv(dbgi, value, mode_int);
2162 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2163 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2167 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2168 ir_node *left, ir_node *right)
2171 type_t *type_left = skip_typeref(expression->left->base.type);
2172 type_t *type_right = skip_typeref(expression->right->base.type);
2174 expression_kind_t kind = expression->base.kind;
2177 case EXPR_BINARY_SHIFTLEFT:
2178 case EXPR_BINARY_SHIFTRIGHT:
2179 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2180 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2181 mode = get_irn_mode(left);
2182 right = create_conv(dbgi, right, mode_uint);
2185 case EXPR_BINARY_SUB:
2186 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2187 const pointer_type_t *const ptr_type = &type_left->pointer;
2189 mode = get_ir_mode(expression->base.type);
2190 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2191 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2192 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2193 ir_node *const no_mem = new_NoMem();
2194 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2195 mode, op_pin_state_floats);
2196 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2199 case EXPR_BINARY_SUB_ASSIGN:
2200 if (is_type_pointer(type_left)) {
2201 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2202 mode = get_ir_mode(type_left);
2207 case EXPR_BINARY_ADD:
2208 case EXPR_BINARY_ADD_ASSIGN:
2209 if (is_type_pointer(type_left)) {
2210 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2211 mode = get_ir_mode(type_left);
2213 } else if (is_type_pointer(type_right)) {
2214 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2215 mode = get_ir_mode(type_right);
2222 mode = get_irn_mode(right);
2223 left = create_conv(dbgi, left, mode);
2228 case EXPR_BINARY_ADD_ASSIGN:
2229 case EXPR_BINARY_ADD:
2230 return new_d_Add(dbgi, left, right, mode);
2231 case EXPR_BINARY_SUB_ASSIGN:
2232 case EXPR_BINARY_SUB:
2233 return new_d_Sub(dbgi, left, right, mode);
2234 case EXPR_BINARY_MUL_ASSIGN:
2235 case EXPR_BINARY_MUL:
2236 return new_d_Mul(dbgi, left, right, mode);
2237 case EXPR_BINARY_BITWISE_AND:
2238 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2239 return new_d_And(dbgi, left, right, mode);
2240 case EXPR_BINARY_BITWISE_OR:
2241 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2242 return new_d_Or(dbgi, left, right, mode);
2243 case EXPR_BINARY_BITWISE_XOR:
2244 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2245 return new_d_Eor(dbgi, left, right, mode);
2246 case EXPR_BINARY_SHIFTLEFT:
2247 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2248 return new_d_Shl(dbgi, left, right, mode);
2249 case EXPR_BINARY_SHIFTRIGHT:
2250 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2251 if (mode_is_signed(mode)) {
2252 return new_d_Shrs(dbgi, left, right, mode);
2254 return new_d_Shr(dbgi, left, right, mode);
2256 case EXPR_BINARY_DIV:
2257 case EXPR_BINARY_DIV_ASSIGN: {
2258 ir_node *pin = new_Pin(new_NoMem());
2261 if (mode_is_float(mode)) {
2262 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2263 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2265 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2266 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2270 case EXPR_BINARY_MOD:
2271 case EXPR_BINARY_MOD_ASSIGN: {
2272 ir_node *pin = new_Pin(new_NoMem());
2273 assert(!mode_is_float(mode));
2274 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2275 op_pin_state_floats);
2276 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2280 panic("unexpected expression kind");
2284 static ir_node *create_lazy_op(const binary_expression_t *expression)
2286 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2287 type_t *type = expression->base.type;
2288 ir_mode *mode = get_ir_mode(type);
2290 if (is_constant_expression(expression->left)) {
2291 long val = fold_constant(expression->left);
2292 expression_kind_t ekind = expression->base.kind;
2293 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2294 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2295 return expression_to_firm(expression->right);
2297 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2298 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2299 return new_Const(mode, get_mode_one(mode));
2303 return produce_condition_result((const expression_t*) expression, dbgi);
2306 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2307 ir_node *right, ir_mode *mode);
2309 static ir_node *create_assign_binop(const binary_expression_t *expression)
2311 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2312 const expression_t *left_expr = expression->left;
2313 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2314 ir_node *left_addr = expression_to_addr(left_expr);
2315 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2316 ir_node *right = expression_to_firm(expression->right);
2317 ir_node *result = create_op(dbgi, expression, left, right);
2319 result = create_conv(dbgi, result, left_mode);
2320 result = do_strict_conv(dbgi, result);
2322 set_value_for_expression_addr(left_expr, result, left_addr);
2327 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2329 expression_kind_t kind = expression->base.kind;
2332 case EXPR_BINARY_EQUAL:
2333 case EXPR_BINARY_NOTEQUAL:
2334 case EXPR_BINARY_LESS:
2335 case EXPR_BINARY_LESSEQUAL:
2336 case EXPR_BINARY_GREATER:
2337 case EXPR_BINARY_GREATEREQUAL:
2338 case EXPR_BINARY_ISGREATER:
2339 case EXPR_BINARY_ISGREATEREQUAL:
2340 case EXPR_BINARY_ISLESS:
2341 case EXPR_BINARY_ISLESSEQUAL:
2342 case EXPR_BINARY_ISLESSGREATER:
2343 case EXPR_BINARY_ISUNORDERED: {
2344 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2345 ir_node *left = expression_to_firm(expression->left);
2346 ir_node *right = expression_to_firm(expression->right);
2347 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2348 long pnc = get_pnc(kind, expression->left->base.type);
2349 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2352 case EXPR_BINARY_ASSIGN: {
2353 ir_node *addr = expression_to_addr(expression->left);
2354 ir_node *right = expression_to_firm(expression->right);
2355 set_value_for_expression_addr(expression->left, right, addr);
2359 case EXPR_BINARY_ADD:
2360 case EXPR_BINARY_SUB:
2361 case EXPR_BINARY_MUL:
2362 case EXPR_BINARY_DIV:
2363 case EXPR_BINARY_MOD:
2364 case EXPR_BINARY_BITWISE_AND:
2365 case EXPR_BINARY_BITWISE_OR:
2366 case EXPR_BINARY_BITWISE_XOR:
2367 case EXPR_BINARY_SHIFTLEFT:
2368 case EXPR_BINARY_SHIFTRIGHT:
2370 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2371 ir_node *left = expression_to_firm(expression->left);
2372 ir_node *right = expression_to_firm(expression->right);
2373 return create_op(dbgi, expression, left, right);
2375 case EXPR_BINARY_LOGICAL_AND:
2376 case EXPR_BINARY_LOGICAL_OR:
2377 return create_lazy_op(expression);
2378 case EXPR_BINARY_COMMA:
2379 /* create side effects of left side */
2380 (void) expression_to_firm(expression->left);
2381 return _expression_to_firm(expression->right);
2383 case EXPR_BINARY_ADD_ASSIGN:
2384 case EXPR_BINARY_SUB_ASSIGN:
2385 case EXPR_BINARY_MUL_ASSIGN:
2386 case EXPR_BINARY_MOD_ASSIGN:
2387 case EXPR_BINARY_DIV_ASSIGN:
2388 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2389 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2390 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2391 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2392 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2393 return create_assign_binop(expression);
2394 case EXPR_BINARY_BUILTIN_EXPECT:
2395 return _expression_to_firm(expression->left);
2397 panic("TODO binexpr type");
2401 static ir_node *array_access_addr(const array_access_expression_t *expression)
2403 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2404 ir_node *base_addr = expression_to_firm(expression->array_ref);
2405 ir_node *offset = expression_to_firm(expression->index);
2407 type_t *offset_type = skip_typeref(expression->index->base.type);
2409 if (is_type_signed(offset_type)) {
2410 mode = get_ir_mode(type_ssize_t);
2412 mode = get_ir_mode(type_size_t);
2414 offset = create_conv(dbgi, offset, mode);
2416 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2417 assert(is_type_pointer(ref_type));
2418 pointer_type_t *pointer_type = &ref_type->pointer;
2420 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2421 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2422 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2424 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2429 static ir_node *array_access_to_firm(
2430 const array_access_expression_t *expression)
2432 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2433 ir_node *addr = array_access_addr(expression);
2434 type_t *type = revert_automatic_type_conversion(
2435 (const expression_t*) expression);
2436 type = skip_typeref(type);
2438 return deref_address(dbgi, type, addr);
2441 static long get_offsetof_offset(const offsetof_expression_t *expression)
2443 type_t *orig_type = expression->type;
2446 designator_t *designator = expression->designator;
2447 for( ; designator != NULL; designator = designator->next) {
2448 type_t *type = skip_typeref(orig_type);
2449 /* be sure the type is constructed */
2450 (void) get_ir_type(type);
2452 if (designator->symbol != NULL) {
2453 assert(is_type_compound(type));
2454 symbol_t *symbol = designator->symbol;
2456 declaration_t *declaration = type->compound.declaration;
2457 declaration_t *iter = declaration->scope.declarations;
2458 for( ; iter != NULL; iter = iter->next) {
2459 if (iter->symbol == symbol) {
2463 assert(iter != NULL);
2465 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2466 offset += get_entity_offset(iter->v.entity);
2468 orig_type = iter->type;
2470 expression_t *array_index = designator->array_index;
2471 assert(designator->array_index != NULL);
2472 assert(is_type_array(type));
2473 assert(is_type_valid(array_index->base.type));
2475 long index = fold_constant(array_index);
2476 ir_type *arr_type = get_ir_type(type);
2477 ir_type *elem_type = get_array_element_type(arr_type);
2478 long elem_size = get_type_size_bytes(elem_type);
2480 offset += index * elem_size;
2482 orig_type = type->array.element_type;
2489 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2491 ir_mode *mode = get_ir_mode(expression->base.type);
2492 long offset = get_offsetof_offset(expression);
2493 tarval *tv = new_tarval_from_long(offset, mode);
2494 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2496 return new_d_Const(dbgi, mode, tv);
2499 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2500 ir_entity *entity, type_t *type);
2502 static ir_node *compound_literal_to_firm(
2503 const compound_literal_expression_t *expression)
2505 type_t *type = expression->type;
2507 /* create an entity on the stack */
2508 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2510 ident *const id = id_unique("CompLit.%u");
2511 ir_type *const irtype = get_ir_type(type);
2512 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2513 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2514 set_entity_ld_ident(entity, id);
2516 set_entity_variability(entity, variability_uninitialized);
2518 /* create initialisation code */
2519 initializer_t *initializer = expression->initializer;
2520 create_local_initializer(initializer, dbgi, entity, type);
2522 /* create a sel for the compound literal address */
2523 ir_node *frame = get_local_frame(entity);
2524 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2529 * Transform a sizeof expression into Firm code.
2531 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2533 type_t *type = expression->type;
2535 type = expression->tp_expression->base.type;
2536 assert(type != NULL);
2539 type = skip_typeref(type);
2540 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2541 if (is_type_array(type) && type->array.is_vla
2542 && expression->tp_expression != NULL) {
2543 expression_to_firm(expression->tp_expression);
2546 return get_type_size(type);
2550 * Transform an alignof expression into Firm code.
2552 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2554 type_t *type = expression->type;
2556 /* beware: if expression is a variable reference, return the
2557 alignment of the variable. */
2558 const expression_t *tp_expression = expression->tp_expression;
2559 const declaration_t *declaration = expr_is_variable(tp_expression);
2560 if (declaration != NULL) {
2561 /* TODO: get the alignment of this variable. */
2563 type = tp_expression->base.type;
2564 assert(type != NULL);
2567 ir_mode *const mode = get_ir_mode(expression->base.type);
2568 symconst_symbol sym;
2569 sym.type_p = get_ir_type(type);
2570 return new_SymConst(mode, sym, symconst_type_align);
2573 static void init_ir_types(void);
2574 long fold_constant(const expression_t *expression)
2576 bool constant_folding_old = constant_folding;
2577 constant_folding = true;
2581 assert(is_constant_expression(expression));
2583 ir_graph *old_current_ir_graph = current_ir_graph;
2584 if (current_ir_graph == NULL) {
2585 current_ir_graph = get_const_code_irg();
2588 ir_node *cnst = expression_to_firm(expression);
2589 current_ir_graph = old_current_ir_graph;
2591 if (!is_Const(cnst)) {
2592 panic("couldn't fold constant\n");
2595 tarval *tv = get_Const_tarval(cnst);
2596 if (!tarval_is_long(tv)) {
2597 panic("result of constant folding is not integer\n");
2600 constant_folding = constant_folding_old;
2602 return get_tarval_long(tv);
2605 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2607 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2609 /* first try to fold a constant condition */
2610 if (is_constant_expression(expression->condition)) {
2611 long val = fold_constant(expression->condition);
2613 return expression_to_firm(expression->true_expression);
2615 return expression_to_firm(expression->false_expression);
2619 ir_node *cur_block = get_cur_block();
2621 /* create the true block */
2622 ir_node *true_block = new_immBlock();
2624 ir_node *true_val = expression_to_firm(expression->true_expression);
2625 ir_node *true_jmp = new_Jmp();
2627 /* create the false block */
2628 ir_node *false_block = new_immBlock();
2630 ir_node *false_val = expression_to_firm(expression->false_expression);
2631 ir_node *false_jmp = new_Jmp();
2633 /* create the condition evaluation */
2634 set_cur_block(cur_block);
2635 create_condition_evaluation(expression->condition, true_block, false_block);
2636 mature_immBlock(true_block);
2637 mature_immBlock(false_block);
2639 /* create the common block */
2640 ir_node *common_block = new_immBlock();
2641 add_immBlock_pred(common_block, true_jmp);
2642 add_immBlock_pred(common_block, false_jmp);
2643 mature_immBlock(common_block);
2645 /* TODO improve static semantics, so either both or no values are NULL */
2646 if (true_val == NULL || false_val == NULL)
2649 ir_node *in[2] = { true_val, false_val };
2650 ir_mode *mode = get_irn_mode(true_val);
2651 assert(get_irn_mode(false_val) == mode);
2652 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2658 * Returns an IR-node representing the address of a field.
2660 static ir_node *select_addr(const select_expression_t *expression)
2662 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2664 ir_node *compound_addr = expression_to_firm(expression->compound);
2666 /* make sure the type is constructed */
2667 type_t *type = skip_typeref(expression->compound->base.type);
2668 if (is_type_pointer(type)) {
2669 type = type->pointer.points_to;
2671 (void) get_ir_type(type);
2673 declaration_t *entry = expression->compound_entry;
2674 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2675 ir_entity *entity = entry->v.entity;
2677 assert(entity != NULL);
2679 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2684 static ir_node *select_to_firm(const select_expression_t *expression)
2686 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2687 ir_node *addr = select_addr(expression);
2688 type_t *type = revert_automatic_type_conversion(
2689 (const expression_t*) expression);
2690 type = skip_typeref(type);
2692 declaration_t *entry = expression->compound_entry;
2693 type_t *entry_type = skip_typeref(entry->type);
2695 if (entry_type->kind == TYPE_BITFIELD) {
2696 return bitfield_extract_to_firm(expression, addr);
2699 return deref_address(dbgi, type, addr);
2702 /* Values returned by __builtin_classify_type. */
2703 typedef enum gcc_type_class
2709 enumeral_type_class,
2712 reference_type_class,
2716 function_type_class,
2727 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2729 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2735 const atomic_type_t *const atomic_type = &type->atomic;
2736 switch (atomic_type->akind) {
2737 /* should not be reached */
2738 case ATOMIC_TYPE_INVALID:
2742 /* gcc cannot do that */
2743 case ATOMIC_TYPE_VOID:
2744 tc = void_type_class;
2747 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2748 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2749 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2750 case ATOMIC_TYPE_SHORT:
2751 case ATOMIC_TYPE_USHORT:
2752 case ATOMIC_TYPE_INT:
2753 case ATOMIC_TYPE_UINT:
2754 case ATOMIC_TYPE_LONG:
2755 case ATOMIC_TYPE_ULONG:
2756 case ATOMIC_TYPE_LONGLONG:
2757 case ATOMIC_TYPE_ULONGLONG:
2758 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2759 tc = integer_type_class;
2762 case ATOMIC_TYPE_FLOAT:
2763 case ATOMIC_TYPE_DOUBLE:
2764 case ATOMIC_TYPE_LONG_DOUBLE:
2765 tc = real_type_class;
2768 panic("Unexpected atomic type in classify_type_to_firm().");
2771 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2772 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2773 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2774 case TYPE_ARRAY: /* gcc handles this as pointer */
2775 case TYPE_FUNCTION: /* gcc handles this as pointer */
2776 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2777 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2778 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2780 /* gcc handles this as integer */
2781 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2784 /* typedef/typeof should be skipped already */
2791 panic("unexpected TYPE classify_type_to_firm().");
2794 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2795 ir_mode *const mode = mode_int;
2796 tarval *const tv = new_tarval_from_long(tc, mode);
2797 return new_d_Const(dbgi, mode, tv);
2800 static ir_node *function_name_to_firm(
2801 const funcname_expression_t *const expr)
2803 switch(expr->kind) {
2804 case FUNCNAME_FUNCTION:
2805 case FUNCNAME_PRETTY_FUNCTION:
2806 case FUNCNAME_FUNCDNAME:
2807 if (current_function_name == NULL) {
2808 const source_position_t *const src_pos = &expr->base.source_position;
2809 const char *const name = current_function_decl->symbol->string;
2810 const string_t string = { name, strlen(name) + 1 };
2811 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2813 return current_function_name;
2814 case FUNCNAME_FUNCSIG:
2815 if (current_funcsig == NULL) {
2816 const source_position_t *const src_pos = &expr->base.source_position;
2817 ir_entity *ent = get_irg_entity(current_ir_graph);
2818 const char *const name = get_entity_ld_name(ent);
2819 const string_t string = { name, strlen(name) + 1 };
2820 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2822 return current_funcsig;
2824 panic("Unsupported function name");
2827 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2829 statement_t *statement = expr->statement;
2831 assert(statement->kind == STATEMENT_COMPOUND);
2832 return compound_statement_to_firm(&statement->compound);
2835 static ir_node *va_start_expression_to_firm(
2836 const va_start_expression_t *const expr)
2838 ir_type *const method_type = get_ir_type(current_function_decl->type);
2839 int const n = get_method_n_params(method_type) - 1;
2840 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2841 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2842 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2843 ir_node *const no_mem = new_NoMem();
2844 ir_node *const arg_sel =
2845 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2847 ir_node *const cnst = get_type_size(expr->parameter->type);
2848 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2849 set_value_for_expression(expr->ap, add);
2854 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2856 type_t *const type = expr->base.type;
2857 expression_t *const ap_expr = expr->ap;
2858 ir_node *const ap_addr = expression_to_addr(ap_expr);
2859 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2860 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2861 ir_node *const res = deref_address(dbgi, type, ap);
2863 ir_node *const cnst = get_type_size(expr->base.type);
2864 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2866 set_value_for_expression_addr(ap_expr, add, ap_addr);
2871 static ir_node *dereference_addr(const unary_expression_t *const expression)
2873 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2874 return expression_to_firm(expression->value);
2878 * Returns a IR-node representing an lvalue of the given expression.
2880 static ir_node *expression_to_addr(const expression_t *expression)
2882 switch(expression->kind) {
2883 case EXPR_REFERENCE:
2884 return reference_addr(&expression->reference);
2885 case EXPR_ARRAY_ACCESS:
2886 return array_access_addr(&expression->array_access);
2888 return select_addr(&expression->select);
2890 return call_expression_to_firm(&expression->call);
2891 case EXPR_UNARY_DEREFERENCE: {
2892 return dereference_addr(&expression->unary);
2897 panic("trying to get address of non-lvalue");
2900 static ir_node *builtin_constant_to_firm(
2901 const builtin_constant_expression_t *expression)
2903 ir_mode *mode = get_ir_mode(expression->base.type);
2906 if (is_constant_expression(expression->value)) {
2911 return new_Const_long(mode, v);
2914 static ir_node *builtin_prefetch_to_firm(
2915 const builtin_prefetch_expression_t *expression)
2917 ir_node *adr = expression_to_firm(expression->adr);
2918 /* no Firm support for prefetch yet */
2924 * creates firm nodes for an expression. The difference between this function
2925 * and expression_to_firm is, that this version might produce mode_b nodes
2926 * instead of mode_Is.
2928 static ir_node *_expression_to_firm(const expression_t *expression)
2931 if (!constant_folding) {
2932 assert(!expression->base.transformed);
2933 ((expression_t*) expression)->base.transformed = true;
2937 switch(expression->kind) {
2938 case EXPR_CHARACTER_CONSTANT:
2939 return character_constant_to_firm(&expression->conste);
2940 case EXPR_WIDE_CHARACTER_CONSTANT:
2941 return wide_character_constant_to_firm(&expression->conste);
2943 return const_to_firm(&expression->conste);
2944 case EXPR_STRING_LITERAL:
2945 return string_literal_to_firm(&expression->string);
2946 case EXPR_WIDE_STRING_LITERAL:
2947 return wide_string_literal_to_firm(&expression->wide_string);
2948 case EXPR_REFERENCE:
2949 return reference_expression_to_firm(&expression->reference);
2951 return call_expression_to_firm(&expression->call);
2953 return unary_expression_to_firm(&expression->unary);
2955 return binary_expression_to_firm(&expression->binary);
2956 case EXPR_ARRAY_ACCESS:
2957 return array_access_to_firm(&expression->array_access);
2959 return sizeof_to_firm(&expression->typeprop);
2961 return alignof_to_firm(&expression->typeprop);
2962 case EXPR_CONDITIONAL:
2963 return conditional_to_firm(&expression->conditional);
2965 return select_to_firm(&expression->select);
2966 case EXPR_CLASSIFY_TYPE:
2967 return classify_type_to_firm(&expression->classify_type);
2969 return function_name_to_firm(&expression->funcname);
2970 case EXPR_STATEMENT:
2971 return statement_expression_to_firm(&expression->statement);
2973 return va_start_expression_to_firm(&expression->va_starte);
2975 return va_arg_expression_to_firm(&expression->va_arge);
2976 case EXPR_BUILTIN_SYMBOL:
2977 panic("unimplemented expression found");
2978 case EXPR_BUILTIN_CONSTANT_P:
2979 return builtin_constant_to_firm(&expression->builtin_constant);
2980 case EXPR_BUILTIN_PREFETCH:
2981 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2983 return offsetof_to_firm(&expression->offsetofe);
2984 case EXPR_COMPOUND_LITERAL:
2985 return compound_literal_to_firm(&expression->compound_literal);
2991 panic("invalid expression found");
2994 static bool produces_mode_b(const expression_t *expression)
2996 switch (expression->kind) {
2997 case EXPR_BINARY_EQUAL:
2998 case EXPR_BINARY_NOTEQUAL:
2999 case EXPR_BINARY_LESS:
3000 case EXPR_BINARY_LESSEQUAL:
3001 case EXPR_BINARY_GREATER:
3002 case EXPR_BINARY_GREATEREQUAL:
3003 case EXPR_BINARY_ISGREATER:
3004 case EXPR_BINARY_ISGREATEREQUAL:
3005 case EXPR_BINARY_ISLESS:
3006 case EXPR_BINARY_ISLESSEQUAL:
3007 case EXPR_BINARY_ISLESSGREATER:
3008 case EXPR_BINARY_ISUNORDERED:
3009 case EXPR_UNARY_NOT:
3012 case EXPR_BINARY_BUILTIN_EXPECT:
3013 return produces_mode_b(expression->binary.left);
3014 case EXPR_BINARY_COMMA:
3015 return produces_mode_b(expression->binary.right);
3022 static ir_node *expression_to_firm(const expression_t *expression)
3024 if (!produces_mode_b(expression)) {
3025 ir_node *res = _expression_to_firm(expression);
3026 assert(res == NULL || get_irn_mode(res) != mode_b);
3030 if (is_constant_expression(expression)) {
3031 ir_node *res = _expression_to_firm(expression);
3032 ir_mode *mode = get_ir_mode(expression->base.type);
3033 assert(is_Const(res));
3034 if (is_Const_null(res)) {
3035 return new_Const_long(mode, 0);
3037 return new_Const_long(mode, 1);
3041 /* we have to produce a 0/1 from the mode_b expression */
3042 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3043 return produce_condition_result(expression, dbgi);
3046 static ir_node *expression_to_modeb(const expression_t *expression)
3048 ir_node *res = _expression_to_firm(expression);
3049 res = create_conv(NULL, res, mode_b);
3055 * create a short-circuit expression evaluation that tries to construct
3056 * efficient control flow structures for &&, || and ! expressions
3058 static void create_condition_evaluation(const expression_t *expression,
3059 ir_node *true_block,
3060 ir_node *false_block)
3062 switch(expression->kind) {
3063 case EXPR_UNARY_NOT: {
3064 const unary_expression_t *unary_expression = &expression->unary;
3065 create_condition_evaluation(unary_expression->value, false_block,
3069 case EXPR_BINARY_LOGICAL_AND: {
3070 const binary_expression_t *binary_expression = &expression->binary;
3072 ir_node *cur_block = get_cur_block();
3073 ir_node *extra_block = new_immBlock();
3074 set_cur_block(cur_block);
3075 create_condition_evaluation(binary_expression->left, extra_block,
3077 mature_immBlock(extra_block);
3078 set_cur_block(extra_block);
3079 create_condition_evaluation(binary_expression->right, true_block,
3083 case EXPR_BINARY_LOGICAL_OR: {
3084 const binary_expression_t *binary_expression = &expression->binary;
3086 ir_node *cur_block = get_cur_block();
3087 ir_node *extra_block = new_immBlock();
3088 set_cur_block(cur_block);
3089 create_condition_evaluation(binary_expression->left, true_block,
3091 mature_immBlock(extra_block);
3092 set_cur_block(extra_block);
3093 create_condition_evaluation(binary_expression->right, true_block,
3101 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3102 ir_node *condition = expression_to_modeb(expression);
3103 ir_node *cond = new_d_Cond(dbgi, condition);
3104 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3105 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3107 /* set branch prediction info based on __builtin_expect */
3108 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3109 long cnst = fold_constant(expression->binary.right);
3110 cond_jmp_predicate pred;
3113 pred = COND_JMP_PRED_FALSE;
3115 pred = COND_JMP_PRED_TRUE;
3117 set_Cond_jmp_pred(cond, pred);
3120 add_immBlock_pred(true_block, true_proj);
3121 if (false_block != NULL) {
3122 add_immBlock_pred(false_block, false_proj);
3125 set_cur_block(NULL);
3130 static void create_declaration_entity(declaration_t *declaration,
3131 declaration_kind_t declaration_kind,
3132 ir_type *parent_type)
3134 type_t *const type = skip_typeref(declaration->type);
3135 if (is_type_function(type)) {
3136 (void) get_function_entity(declaration);
3140 ident *const id = new_id_from_str(declaration->symbol->string);
3141 ir_type *const irtype = get_ir_type(type);
3142 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3143 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3145 declaration->declaration_kind = (unsigned char) declaration_kind;
3146 declaration->v.entity = entity;
3147 set_entity_variability(entity, variability_uninitialized);
3148 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3149 if (parent_type == get_tls_type())
3150 set_entity_allocation(entity, allocation_automatic);
3151 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3152 set_entity_allocation(entity, allocation_static);
3154 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3155 set_entity_volatility(entity, volatility_is_volatile);
3160 typedef struct type_path_entry_t type_path_entry_t;
3161 struct type_path_entry_t {
3163 ir_initializer_t *initializer;
3165 declaration_t *compound_entry;
3168 typedef struct type_path_t type_path_t;
3169 struct type_path_t {
3170 type_path_entry_t *path;
3175 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3177 size_t len = ARR_LEN(path->path);
3179 for(size_t i = 0; i < len; ++i) {
3180 const type_path_entry_t *entry = & path->path[i];
3182 type_t *type = skip_typeref(entry->type);
3183 if (is_type_compound(type)) {
3184 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3185 } else if (is_type_array(type)) {
3186 fprintf(stderr, "[%zd]", entry->index);
3188 fprintf(stderr, "-INVALID-");
3191 fprintf(stderr, " (");
3192 print_type(path->top_type);
3193 fprintf(stderr, ")");
3196 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3198 size_t len = ARR_LEN(path->path);
3200 return & path->path[len-1];
3203 static type_path_entry_t *append_to_type_path(type_path_t *path)
3205 size_t len = ARR_LEN(path->path);
3206 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3208 type_path_entry_t *result = & path->path[len];
3209 memset(result, 0, sizeof(result[0]));
3213 static size_t get_compound_size(const compound_type_t *type)
3215 declaration_t *declaration = type->declaration;
3216 declaration_t *member = declaration->scope.declarations;
3218 for( ; member != NULL; member = member->next) {
3221 /* TODO: cache results? */
3226 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3228 type_t *orig_top_type = path->top_type;
3229 type_t *top_type = skip_typeref(orig_top_type);
3231 assert(is_type_compound(top_type) || is_type_array(top_type));
3233 if (ARR_LEN(path->path) == 0) {
3236 type_path_entry_t *top = get_type_path_top(path);
3237 ir_initializer_t *initializer = top->initializer;
3238 return get_initializer_compound_value(initializer, top->index);
3242 static void descend_into_subtype(type_path_t *path)
3244 type_t *orig_top_type = path->top_type;
3245 type_t *top_type = skip_typeref(orig_top_type);
3247 assert(is_type_compound(top_type) || is_type_array(top_type));
3249 ir_initializer_t *initializer = get_initializer_entry(path);
3251 type_path_entry_t *top = append_to_type_path(path);
3252 top->type = top_type;
3256 if (is_type_compound(top_type)) {
3257 declaration_t *declaration = top_type->compound.declaration;
3258 declaration_t *entry = declaration->scope.declarations;
3260 top->compound_entry = entry;
3262 len = get_compound_size(&top_type->compound);
3264 path->top_type = entry->type;
3266 assert(is_type_array(top_type));
3267 assert(top_type->array.size > 0);
3270 path->top_type = top_type->array.element_type;
3271 len = top_type->array.size;
3273 if (initializer == NULL
3274 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3275 initializer = create_initializer_compound(len);
3276 /* we have to set the entry at the 2nd latest path entry... */
3277 size_t path_len = ARR_LEN(path->path);
3278 assert(path_len >= 1);
3280 type_path_entry_t *entry = & path->path[path_len-2];
3281 ir_initializer_t *tinitializer = entry->initializer;
3282 set_initializer_compound_value(tinitializer, entry->index,
3286 top->initializer = initializer;
3289 static void ascend_from_subtype(type_path_t *path)
3291 type_path_entry_t *top = get_type_path_top(path);
3293 path->top_type = top->type;
3295 size_t len = ARR_LEN(path->path);
3296 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3299 static void walk_designator(type_path_t *path, const designator_t *designator)
3301 /* designators start at current object type */
3302 ARR_RESIZE(type_path_entry_t, path->path, 1);
3304 for( ; designator != NULL; designator = designator->next) {
3305 type_path_entry_t *top = get_type_path_top(path);
3306 type_t *orig_type = top->type;
3307 type_t *type = skip_typeref(orig_type);
3309 if (designator->symbol != NULL) {
3310 assert(is_type_compound(type));
3312 symbol_t *symbol = designator->symbol;
3314 declaration_t *declaration = type->compound.declaration;
3315 declaration_t *iter = declaration->scope.declarations;
3316 for( ; iter != NULL; iter = iter->next, ++index) {
3317 if (iter->symbol == symbol) {
3321 assert(iter != NULL);
3323 top->type = orig_type;
3324 top->compound_entry = iter;
3326 orig_type = iter->type;
3328 expression_t *array_index = designator->array_index;
3329 assert(designator->array_index != NULL);
3330 assert(is_type_array(type));
3331 assert(is_type_valid(array_index->base.type));
3333 long index = fold_constant(array_index);
3336 if (type->array.size_constant == 1) {
3337 long array_size = type->array.size;
3338 assert(index < array_size);
3342 top->type = orig_type;
3343 top->index = (size_t) index;
3344 orig_type = type->array.element_type;
3346 path->top_type = orig_type;
3348 if (designator->next != NULL) {
3349 descend_into_subtype(path);
3353 path->invalid = false;
3356 static void advance_current_object(type_path_t *path)
3358 if (path->invalid) {
3359 /* TODO: handle this... */
3360 panic("invalid initializer in ast2firm (excessive elements)");
3364 type_path_entry_t *top = get_type_path_top(path);
3366 type_t *type = skip_typeref(top->type);
3367 if (is_type_union(type)) {
3368 top->compound_entry = NULL;
3369 } else if (is_type_struct(type)) {
3370 declaration_t *entry = top->compound_entry;
3373 entry = entry->next;
3374 top->compound_entry = entry;
3375 if (entry != NULL) {
3376 path->top_type = entry->type;
3380 assert(is_type_array(type));
3383 if (!type->array.size_constant || top->index < type->array.size) {
3388 /* we're past the last member of the current sub-aggregate, try if we
3389 * can ascend in the type hierarchy and continue with another subobject */
3390 size_t len = ARR_LEN(path->path);
3393 ascend_from_subtype(path);
3394 advance_current_object(path);
3396 path->invalid = true;
3401 static ir_initializer_t *create_ir_initializer(
3402 const initializer_t *initializer, type_t *type);
3404 static ir_initializer_t *create_ir_initializer_value(
3405 const initializer_value_t *initializer)
3407 if (is_type_compound(initializer->value->base.type)) {
3408 panic("initializer creation for compounds not implemented yet");
3410 ir_node *value = expression_to_firm(initializer->value);
3411 return create_initializer_const(value);
3414 static ir_initializer_t *create_ir_initializer_list(
3415 const initializer_list_t *initializer, type_t *type)
3418 memset(&path, 0, sizeof(path));
3419 path.top_type = type;
3420 path.path = NEW_ARR_F(type_path_entry_t, 0);
3422 descend_into_subtype(&path);
3424 for(size_t i = 0; i < initializer->len; ++i) {
3425 const initializer_t *sub_initializer = initializer->initializers[i];
3427 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3428 walk_designator(&path, sub_initializer->designator.designator);
3432 if (sub_initializer->kind == INITIALIZER_VALUE) {
3433 /* we might have to descend into types until we're at a scalar
3436 type_t *orig_top_type = path.top_type;
3437 type_t *top_type = skip_typeref(orig_top_type);
3439 if (is_type_scalar(top_type))
3441 descend_into_subtype(&path);
3445 ir_initializer_t *sub_irinitializer
3446 = create_ir_initializer(sub_initializer, path.top_type);
3448 size_t path_len = ARR_LEN(path.path);
3449 assert(path_len >= 1);
3450 type_path_entry_t *entry = & path.path[path_len-1];
3451 ir_initializer_t *tinitializer = entry->initializer;
3452 set_initializer_compound_value(tinitializer, entry->index,
3455 advance_current_object(&path);
3458 assert(ARR_LEN(path.path) >= 1);
3459 ir_initializer_t *result = path.path[0].initializer;
3460 DEL_ARR_F(path.path);
3465 static ir_initializer_t *create_ir_initializer_string(
3466 const initializer_string_t *initializer, type_t *type)
3468 type = skip_typeref(type);
3470 size_t string_len = initializer->string.size;
3471 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3472 size_t len = type->array.size;
3473 ir_initializer_t *irinitializer = create_initializer_compound(len);
3475 const char *string = initializer->string.begin;
3476 ir_mode *mode = get_ir_mode(type->array.element_type);
3478 for(size_t i = 0; i < len; ++i) {
3483 tarval *tv = new_tarval_from_long(c, mode);
3484 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3486 set_initializer_compound_value(irinitializer, i, char_initializer);
3489 return irinitializer;
3492 static ir_initializer_t *create_ir_initializer_wide_string(
3493 const initializer_wide_string_t *initializer, type_t *type)
3495 size_t string_len = initializer->string.size;
3496 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3497 size_t len = type->array.size;
3498 ir_initializer_t *irinitializer = create_initializer_compound(len);
3500 const wchar_rep_t *string = initializer->string.begin;
3501 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3503 for(size_t i = 0; i < len; ++i) {
3505 if (i < string_len) {
3508 tarval *tv = new_tarval_from_long(c, mode);
3509 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3511 set_initializer_compound_value(irinitializer, i, char_initializer);
3514 return irinitializer;
3517 static ir_initializer_t *create_ir_initializer(
3518 const initializer_t *initializer, type_t *type)
3520 switch(initializer->kind) {
3521 case INITIALIZER_STRING:
3522 return create_ir_initializer_string(&initializer->string, type);
3524 case INITIALIZER_WIDE_STRING:
3525 return create_ir_initializer_wide_string(&initializer->wide_string,
3528 case INITIALIZER_LIST:
3529 return create_ir_initializer_list(&initializer->list, type);
3531 case INITIALIZER_VALUE:
3532 return create_ir_initializer_value(&initializer->value);
3534 case INITIALIZER_DESIGNATOR:
3535 panic("unexpected designator initializer found");
3537 panic("unknown initializer");
3540 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3543 if (is_atomic_type(type)) {
3544 ir_mode *mode = get_type_mode(type);
3545 tarval *zero = get_mode_null(mode);
3546 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3548 /* TODO: bitfields */
3549 ir_node *mem = get_store();
3550 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3551 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3554 assert(is_compound_type(type));
3557 if (is_Array_type(type)) {
3558 assert(has_array_upper_bound(type, 0));
3559 n_members = get_array_upper_bound_int(type, 0);
3561 n_members = get_compound_n_members(type);
3564 for(int i = 0; i < n_members; ++i) {
3567 if (is_Array_type(type)) {
3568 ir_entity *entity = get_array_element_entity(type);
3569 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3570 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3571 ir_node *in[1] = { cnst };
3572 irtype = get_array_element_type(type);
3573 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3575 ir_entity *member = get_compound_member(type, i);
3577 irtype = get_entity_type(member);
3578 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3581 create_dynamic_null_initializer(irtype, dbgi, addr);
3586 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3587 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3589 switch(get_initializer_kind(initializer)) {
3590 case IR_INITIALIZER_NULL: {
3591 create_dynamic_null_initializer(type, dbgi, base_addr);
3594 case IR_INITIALIZER_CONST: {
3595 ir_node *node = get_initializer_const_value(initializer);
3596 ir_mode *mode = get_irn_mode(node);
3597 assert(get_type_mode(type) == mode);
3599 /* TODO: bitfields... */
3600 ir_node *mem = get_store();
3601 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3602 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3606 case IR_INITIALIZER_TARVAL: {
3607 tarval *tv = get_initializer_tarval_value(initializer);
3608 ir_mode *mode = get_tarval_mode(tv);
3609 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3610 assert(get_type_mode(type) == mode);
3612 /* TODO: bitfields... */
3613 ir_node *mem = get_store();
3614 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3615 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3619 case IR_INITIALIZER_COMPOUND: {
3620 assert(is_compound_type(type));
3622 if (is_Array_type(type)) {
3623 assert(has_array_upper_bound(type, 0));
3624 n_members = get_array_upper_bound_int(type, 0);
3626 n_members = get_compound_n_members(type);
3629 if (get_initializer_compound_n_entries(initializer)
3630 != (unsigned) n_members)
3631 panic("initializer doesn't match compound type");
3633 for(int i = 0; i < n_members; ++i) {
3636 if (is_Array_type(type)) {
3637 ir_entity *entity = get_array_element_entity(type);
3638 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3639 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3640 ir_node *in[1] = { cnst };
3641 irtype = get_array_element_type(type);
3642 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3644 ir_entity *member = get_compound_member(type, i);
3646 irtype = get_entity_type(member);
3647 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3650 ir_initializer_t *sub_init
3651 = get_initializer_compound_value(initializer, i);
3653 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3659 panic("invalid IR_INITIALIZER found");
3662 static void create_dynamic_initializer(ir_initializer_t *initializer,
3663 dbg_info *dbgi, ir_entity *entity)
3665 ir_node *frame = get_local_frame(entity);
3666 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3667 ir_type *type = get_entity_type(entity);
3669 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3672 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3673 ir_entity *entity, type_t *type)
3675 ir_node *memory = get_store();
3676 ir_node *nomem = new_NoMem();
3677 ir_node *frame = get_irg_frame(current_ir_graph);
3678 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3680 if (initializer->kind == INITIALIZER_VALUE) {
3681 initializer_value_t *initializer_value = &initializer->value;
3683 ir_node *value = expression_to_firm(initializer_value->value);
3684 type = skip_typeref(type);
3685 assign_value(dbgi, addr, type, value);
3689 if (!is_constant_initializer(initializer)) {
3690 ir_initializer_t *irinitializer
3691 = create_ir_initializer(initializer, type);
3693 create_dynamic_initializer(irinitializer, dbgi, entity);
3697 /* create the ir_initializer */
3698 ir_graph *const old_current_ir_graph = current_ir_graph;
3699 current_ir_graph = get_const_code_irg();
3701 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3703 assert(current_ir_graph == get_const_code_irg());
3704 current_ir_graph = old_current_ir_graph;
3706 /* create a "template" entity which is copied to the entity on the stack */
3707 ident *const id = id_unique("initializer.%u");
3708 ir_type *const irtype = get_ir_type(type);
3709 ir_type *const global_type = get_glob_type();
3710 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3711 set_entity_ld_ident(init_entity, id);
3713 set_entity_variability(init_entity, variability_initialized);
3714 set_entity_visibility(init_entity, visibility_local);
3715 set_entity_allocation(init_entity, allocation_static);
3717 set_entity_initializer(init_entity, irinitializer);
3719 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3720 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3722 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3723 set_store(copyb_mem);
3726 static void create_initializer_local_variable_entity(declaration_t *declaration)
3728 initializer_t *initializer = declaration->init.initializer;
3729 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3730 ir_entity *entity = declaration->v.entity;
3731 type_t *type = declaration->type;
3732 create_local_initializer(initializer, dbgi, entity, type);
3735 static void create_declaration_initializer(declaration_t *declaration)
3737 initializer_t *initializer = declaration->init.initializer;
3738 if (initializer == NULL)
3741 declaration_kind_t declaration_kind
3742 = (declaration_kind_t) declaration->declaration_kind;
3743 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3744 create_initializer_local_variable_entity(declaration);
3748 type_t *type = skip_typeref(declaration->type);
3750 if (initializer->kind == INITIALIZER_VALUE) {
3751 initializer_value_t *initializer_value = &initializer->value;
3753 = get_dbg_info(&declaration->source_position);
3755 ir_node *value = expression_to_firm(initializer_value->value);
3756 value = do_strict_conv(dbgi, value);
3758 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3759 set_value(declaration->v.value_number, value);
3761 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3763 ir_entity *entity = declaration->v.entity;
3765 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3766 set_entity_variability(entity, variability_constant);
3768 set_entity_variability(entity, variability_initialized);
3770 set_atomic_ent_value(entity, value);
3773 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3774 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3776 ir_entity *entity = declaration->v.entity;
3777 ir_initializer_t *irinitializer
3778 = create_ir_initializer(initializer, type);
3780 if (type->base.qualifiers & TYPE_QUALIFIER_CONST) {
3781 set_entity_variability(entity, variability_constant);
3783 set_entity_variability(entity, variability_initialized);
3785 set_entity_initializer(entity, irinitializer);
3789 static void create_variable_length_array(declaration_t *declaration)
3791 /* initializers are not allowed for VLAs */
3792 assert(declaration->init.initializer == NULL);
3794 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3795 declaration->v.vla_base = NULL;
3797 /* TODO: record VLA somewhere so we create the free node when we leave
3801 static void allocate_variable_length_array(declaration_t *declaration)
3803 /* initializers are not allowed for VLAs */
3804 assert(declaration->init.initializer == NULL);
3805 assert(get_cur_block() != NULL);
3807 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3808 type_t *type = declaration->type;
3809 ir_type *el_type = get_ir_type(type->array.element_type);
3811 /* make sure size_node is calculated */
3812 get_type_size(type);
3813 ir_node *elems = type->array.size_node;
3814 ir_node *mem = get_store();
3815 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3817 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3818 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3821 assert(declaration->declaration_kind
3822 == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3823 declaration->v.vla_base = addr;
3827 * Creates a Firm local variable from a declaration.
3829 static void create_local_variable(declaration_t *declaration)
3831 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3833 bool needs_entity = declaration->address_taken;
3834 type_t *type = skip_typeref(declaration->type);
3836 /* is it a variable length array? */
3837 if (is_type_array(type) && !type->array.size_constant) {
3838 create_variable_length_array(declaration);
3840 } else if (is_type_array(type) || is_type_compound(type)) {
3841 needs_entity = true;
3842 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3843 needs_entity = true;
3847 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3848 create_declaration_entity(declaration,
3849 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3852 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3853 declaration->v.value_number = next_value_number_function;
3854 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3855 ++next_value_number_function;
3859 static void create_local_static_variable(declaration_t *declaration)
3861 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3863 type_t *const type = skip_typeref(declaration->type);
3864 ir_type *const global_type = get_glob_type();
3865 ir_type *const irtype = get_ir_type(type);
3866 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3868 size_t l = strlen(declaration->symbol->string);
3869 char buf[l + sizeof(".%u")];
3870 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3871 ident *const id = id_unique(buf);
3873 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3875 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3876 set_entity_volatility(entity, volatility_is_volatile);
3879 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3880 declaration->v.entity = entity;
3881 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3882 set_entity_variability(entity, variability_uninitialized);
3883 set_entity_visibility(entity, visibility_local);
3884 set_entity_allocation(entity, allocation_static);
3886 ir_graph *const old_current_ir_graph = current_ir_graph;
3887 current_ir_graph = get_const_code_irg();
3889 create_declaration_initializer(declaration);
3891 assert(current_ir_graph == get_const_code_irg());
3892 current_ir_graph = old_current_ir_graph;
3897 static void return_statement_to_firm(return_statement_t *statement)
3899 if (get_cur_block() == NULL)
3902 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3903 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3908 if (get_method_n_ress(func_irtype) > 0) {
3909 ir_type *res_type = get_method_res_type(func_irtype, 0);
3911 if (statement->value != NULL) {
3912 ir_node *node = expression_to_firm(statement->value);
3913 node = do_strict_conv(dbgi, node);
3917 if (is_compound_type(res_type)) {
3920 mode = get_type_mode(res_type);
3922 in[0] = new_Unknown(mode);
3926 /* build return_value for its side effects */
3927 if (statement->value != NULL) {
3928 expression_to_firm(statement->value);
3933 ir_node *store = get_store();
3934 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3936 ir_node *end_block = get_irg_end_block(current_ir_graph);
3937 add_immBlock_pred(end_block, ret);
3939 set_cur_block(NULL);
3942 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3944 if (get_cur_block() == NULL)
3947 return expression_to_firm(statement->expression);
3950 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3952 declaration_t *declaration = compound->scope.declarations;
3953 for( ; declaration != NULL; declaration = declaration->next) {
3954 create_local_declaration(declaration);
3957 ir_node *result = NULL;
3958 statement_t *statement = compound->statements;
3959 for( ; statement != NULL; statement = statement->base.next) {
3960 if (statement->base.next == NULL
3961 && statement->kind == STATEMENT_EXPRESSION) {
3962 result = expression_statement_to_firm(
3963 &statement->expression);
3966 statement_to_firm(statement);
3972 static void create_global_variable(declaration_t *declaration)
3976 switch ((storage_class_tag_t)declaration->storage_class) {
3977 case STORAGE_CLASS_STATIC:
3978 vis = visibility_local;
3981 case STORAGE_CLASS_EXTERN:
3982 vis = visibility_external_allocated;
3985 case STORAGE_CLASS_NONE:
3986 vis = visibility_external_visible;
3989 case STORAGE_CLASS_THREAD:
3990 vis = visibility_external_visible;
3993 case STORAGE_CLASS_THREAD_EXTERN:
3994 vis = visibility_external_allocated;
3997 case STORAGE_CLASS_THREAD_STATIC:
3998 vis = visibility_local;
4002 var_type = get_tls_type();
4006 var_type = get_glob_type();
4010 create_declaration_entity(declaration,
4011 DECLARATION_KIND_GLOBAL_VARIABLE,
4013 if (!is_type_function(skip_typeref(declaration->type))) {
4014 set_entity_visibility(declaration->v.entity, vis);
4019 case STORAGE_CLASS_TYPEDEF:
4020 case STORAGE_CLASS_AUTO:
4021 case STORAGE_CLASS_REGISTER:
4022 case STORAGE_CLASS_ENUM_ENTRY:
4025 panic("Invalid storage class for global variable");
4028 static void create_local_declaration(declaration_t *declaration)
4030 if (declaration->namespc != NAMESPACE_NORMAL)
4032 /* construct type */
4033 (void) get_ir_type(declaration->type);
4034 if (declaration->symbol == NULL) {
4038 type_t *type = skip_typeref(declaration->type);
4040 switch ((storage_class_tag_t) declaration->storage_class) {
4041 case STORAGE_CLASS_STATIC:
4042 create_local_static_variable(declaration);
4044 case STORAGE_CLASS_EXTERN:
4045 create_global_variable(declaration);
4046 create_declaration_initializer(declaration);
4048 case STORAGE_CLASS_NONE:
4049 case STORAGE_CLASS_AUTO:
4050 case STORAGE_CLASS_REGISTER:
4051 if (is_type_function(type)) {
4052 if (declaration->init.statement != NULL) {
4053 panic("nested functions not supported yet");
4055 get_function_entity(declaration);
4058 create_local_variable(declaration);
4061 case STORAGE_CLASS_ENUM_ENTRY:
4062 /* should already be handled */
4063 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
4065 case STORAGE_CLASS_TYPEDEF:
4066 declaration->declaration_kind = DECLARATION_KIND_TYPE;
4068 case STORAGE_CLASS_THREAD:
4069 case STORAGE_CLASS_THREAD_EXTERN:
4070 case STORAGE_CLASS_THREAD_STATIC:
4073 panic("invalid storage class found");
4076 static void initialize_local_declaration(declaration_t *declaration)
4078 if (declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
4081 switch ((declaration_kind_t) declaration->declaration_kind) {
4082 case DECLARATION_KIND_LOCAL_VARIABLE:
4083 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4084 create_declaration_initializer(declaration);
4087 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4088 allocate_variable_length_array(declaration);
4091 case DECLARATION_KIND_LABEL_BLOCK:
4092 case DECLARATION_KIND_COMPOUND_MEMBER:
4093 case DECLARATION_KIND_GLOBAL_VARIABLE:
4094 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
4095 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
4096 case DECLARATION_KIND_FUNCTION:
4097 case DECLARATION_KIND_TYPE:
4098 case DECLARATION_KIND_ENUM_ENTRY:
4101 case DECLARATION_KIND_UNKNOWN:
4102 panic("can't initialize unknwon declaration");
4104 panic("invalid declaration kind");
4107 static void declaration_statement_to_firm(declaration_statement_t *statement)
4109 declaration_t *declaration = statement->declarations_begin;
4110 declaration_t *end = statement->declarations_end->next;
4111 for( ; declaration != end; declaration = declaration->next) {
4112 if (declaration->namespc != NAMESPACE_NORMAL)
4114 initialize_local_declaration(declaration);
4118 static void if_statement_to_firm(if_statement_t *statement)
4120 ir_node *cur_block = get_cur_block();
4122 ir_node *fallthrough_block = NULL;
4124 /* the true (blocks) */
4125 ir_node *true_block = NULL;
4126 if (statement->true_statement != NULL) {
4127 true_block = new_immBlock();
4128 statement_to_firm(statement->true_statement);
4129 if (get_cur_block() != NULL) {
4130 ir_node *jmp = new_Jmp();
4131 if (fallthrough_block == NULL)
4132 fallthrough_block = new_immBlock();
4133 add_immBlock_pred(fallthrough_block, jmp);
4137 /* the false (blocks) */
4138 ir_node *false_block = NULL;
4139 if (statement->false_statement != NULL) {
4140 false_block = new_immBlock();
4142 statement_to_firm(statement->false_statement);
4143 if (get_cur_block() != NULL) {
4144 ir_node *jmp = new_Jmp();
4145 if (fallthrough_block == NULL)
4146 fallthrough_block = new_immBlock();
4147 add_immBlock_pred(fallthrough_block, jmp);
4151 /* create the condition */
4152 if (cur_block != NULL) {
4153 if (true_block == NULL || false_block == NULL) {
4154 if (fallthrough_block == NULL)
4155 fallthrough_block = new_immBlock();
4156 if (true_block == NULL)
4157 true_block = fallthrough_block;
4158 if (false_block == NULL)
4159 false_block = fallthrough_block;
4162 set_cur_block(cur_block);
4163 create_condition_evaluation(statement->condition, true_block,
4167 mature_immBlock(true_block);
4168 if (false_block != fallthrough_block) {
4169 mature_immBlock(false_block);
4171 if (fallthrough_block != NULL) {
4172 mature_immBlock(fallthrough_block);
4175 set_cur_block(fallthrough_block);
4178 static void while_statement_to_firm(while_statement_t *statement)
4180 ir_node *jmp = NULL;
4181 if (get_cur_block() != NULL) {
4185 /* create the header block */
4186 ir_node *header_block = new_immBlock();
4188 add_immBlock_pred(header_block, jmp);
4192 ir_node *old_continue_label = continue_label;
4193 ir_node *old_break_label = break_label;
4194 continue_label = header_block;
4197 ir_node *body_block = new_immBlock();
4198 statement_to_firm(statement->body);
4199 ir_node *false_block = break_label;
4201 assert(continue_label == header_block);
4202 continue_label = old_continue_label;
4203 break_label = old_break_label;
4205 if (get_cur_block() != NULL) {
4207 add_immBlock_pred(header_block, jmp);
4210 /* shortcut for while(true) */
4211 if (is_constant_expression(statement->condition)
4212 && fold_constant(statement->condition) != 0) {
4213 set_cur_block(header_block);
4214 ir_node *header_jmp = new_Jmp();
4215 add_immBlock_pred(body_block, header_jmp);
4217 keep_alive(body_block);
4219 if (false_block == NULL) {
4220 false_block = new_immBlock();
4223 /* create the condition */
4224 set_cur_block(header_block);
4226 create_condition_evaluation(statement->condition, body_block,
4230 mature_immBlock(body_block);
4231 mature_immBlock(header_block);
4232 if (false_block != NULL) {
4233 mature_immBlock(false_block);
4236 set_cur_block(false_block);
4239 static void do_while_statement_to_firm(do_while_statement_t *statement)
4241 ir_node *jmp = NULL;
4242 if (get_cur_block() != NULL) {
4246 /* create the header block */
4247 ir_node *header_block = new_immBlock();
4250 ir_node *body_block = new_immBlock();
4252 add_immBlock_pred(body_block, jmp);
4255 ir_node *old_continue_label = continue_label;
4256 ir_node *old_break_label = break_label;
4257 continue_label = header_block;
4260 statement_to_firm(statement->body);
4261 ir_node *false_block = break_label;
4263 assert(continue_label == header_block);
4264 continue_label = old_continue_label;
4265 break_label = old_break_label;
4267 if (get_cur_block() != NULL) {
4268 ir_node *body_jmp = new_Jmp();
4269 add_immBlock_pred(header_block, body_jmp);
4270 mature_immBlock(header_block);
4273 if (false_block == NULL) {
4274 false_block = new_immBlock();
4277 /* create the condition */
4278 set_cur_block(header_block);
4280 create_condition_evaluation(statement->condition, body_block, false_block);
4281 mature_immBlock(body_block);
4282 mature_immBlock(header_block);
4283 if (false_block != NULL) {
4284 mature_immBlock(false_block);
4287 set_cur_block(false_block);
4290 static void for_statement_to_firm(for_statement_t *statement)
4292 ir_node *jmp = NULL;
4294 /* create declarations */
4295 declaration_t *declaration = statement->scope.declarations;
4296 for( ; declaration != NULL; declaration = declaration->next) {
4297 create_local_declaration(declaration);
4299 declaration = statement->scope.declarations;
4300 for( ; declaration != NULL; declaration = declaration->next) {
4301 initialize_local_declaration(declaration);
4304 if (get_cur_block() != NULL) {
4305 if (statement->initialisation != NULL) {
4306 expression_to_firm(statement->initialisation);
4313 /* create the step block */
4314 ir_node *const step_block = new_immBlock();
4315 if (statement->step != NULL) {
4316 expression_to_firm(statement->step);
4318 ir_node *const step_jmp = new_Jmp();
4320 /* create the header block */
4321 ir_node *const header_block = new_immBlock();
4323 add_immBlock_pred(header_block, jmp);
4325 add_immBlock_pred(header_block, step_jmp);
4327 /* the false block */
4328 ir_node *const false_block = new_immBlock();
4331 ir_node * body_block;
4332 if (statement->body != NULL) {
4333 ir_node *const old_continue_label = continue_label;
4334 ir_node *const old_break_label = break_label;
4335 continue_label = step_block;
4336 break_label = false_block;
4338 body_block = new_immBlock();
4339 statement_to_firm(statement->body);
4341 assert(continue_label == step_block);
4342 assert(break_label == false_block);
4343 continue_label = old_continue_label;
4344 break_label = old_break_label;
4346 if (get_cur_block() != NULL) {
4348 add_immBlock_pred(step_block, jmp);
4351 body_block = step_block;
4354 /* create the condition */
4355 set_cur_block(header_block);
4356 if (statement->condition != NULL) {
4357 create_condition_evaluation(statement->condition, body_block,
4360 keep_alive(header_block);
4362 add_immBlock_pred(body_block, jmp);
4365 mature_immBlock(body_block);
4366 mature_immBlock(false_block);
4367 mature_immBlock(step_block);
4368 mature_immBlock(header_block);
4369 mature_immBlock(false_block);
4371 set_cur_block(false_block);
4374 static void create_jump_statement(const statement_t *statement,
4375 ir_node *target_block)
4377 if (get_cur_block() == NULL)
4380 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4381 ir_node *jump = new_d_Jmp(dbgi);
4382 add_immBlock_pred(target_block, jump);
4384 set_cur_block(NULL);
4387 static ir_node *get_break_label(void)
4389 if (break_label == NULL) {
4390 ir_node *cur_block = get_cur_block();
4391 break_label = new_immBlock();
4392 set_cur_block(cur_block);
4397 static void switch_statement_to_firm(const switch_statement_t *statement)
4399 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4401 ir_node *expression = expression_to_firm(statement->expression);
4402 ir_node *cond = new_d_Cond(dbgi, expression);
4404 set_cur_block(NULL);
4406 ir_node *const old_switch_cond = current_switch_cond;
4407 ir_node *const old_break_label = break_label;
4408 const bool old_saw_default_label = saw_default_label;
4409 saw_default_label = false;
4410 current_switch_cond = cond;
4413 if (statement->body != NULL) {
4414 statement_to_firm(statement->body);
4417 if (get_cur_block() != NULL) {
4418 ir_node *jmp = new_Jmp();
4419 add_immBlock_pred(get_break_label(), jmp);
4422 if (!saw_default_label) {
4423 set_cur_block(get_nodes_block(cond));
4424 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4425 MAGIC_DEFAULT_PN_NUMBER);
4426 add_immBlock_pred(get_break_label(), proj);
4429 if (break_label != NULL) {
4430 mature_immBlock(break_label);
4432 set_cur_block(break_label);
4434 assert(current_switch_cond == cond);
4435 current_switch_cond = old_switch_cond;
4436 break_label = old_break_label;
4437 saw_default_label = old_saw_default_label;
4440 static void case_label_to_firm(const case_label_statement_t *statement)
4442 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4444 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4446 /* let's create a node and hope firm constant folding creates a Const
4449 ir_node *old_block = get_nodes_block(current_switch_cond);
4450 ir_node *block = new_immBlock();
4452 set_cur_block(old_block);
4453 if (statement->expression != NULL) {
4454 long start_pn = fold_constant(statement->expression);
4455 long end_pn = start_pn;
4456 if (statement->end_range != NULL) {
4457 end_pn = fold_constant(statement->end_range);
4459 assert(start_pn <= end_pn);
4460 /* create jumps for all cases in the given range */
4461 for (long pn = start_pn; pn <= end_pn; ++pn) {
4462 if (pn == MAGIC_DEFAULT_PN_NUMBER) {
4463 /* oops someone detected our cheating... */
4464 panic("magic default pn used");
4466 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4467 add_immBlock_pred(block, proj);
4470 saw_default_label = true;
4471 proj = new_d_defaultProj(dbgi, current_switch_cond,
4472 MAGIC_DEFAULT_PN_NUMBER);
4474 add_immBlock_pred(block, proj);
4477 if (fallthrough != NULL) {
4478 add_immBlock_pred(block, fallthrough);
4480 mature_immBlock(block);
4481 set_cur_block(block);
4483 if (statement->statement != NULL) {
4484 statement_to_firm(statement->statement);
4488 static ir_node *get_label_block(declaration_t *label)
4490 assert(label->namespc == NAMESPACE_LABEL);
4492 if (label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4493 return label->v.block;
4495 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4497 ir_node *old_cur_block = get_cur_block();
4498 ir_node *block = new_immBlock();
4499 set_cur_block(old_cur_block);
4501 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4502 label->v.block = block;
4504 ARR_APP1(ir_node *, imature_blocks, block);
4509 static void label_to_firm(const label_statement_t *statement)
4511 ir_node *block = get_label_block(statement->label);
4513 if (get_cur_block() != NULL) {
4514 ir_node *jmp = new_Jmp();
4515 add_immBlock_pred(block, jmp);
4518 set_cur_block(block);
4521 if (statement->statement != NULL) {
4522 statement_to_firm(statement->statement);
4526 static void goto_to_firm(const goto_statement_t *statement)
4528 if (get_cur_block() == NULL)
4531 ir_node *block = get_label_block(statement->label);
4532 ir_node *jmp = new_Jmp();
4533 add_immBlock_pred(block, jmp);
4535 set_cur_block(NULL);
4538 static void asm_statement_to_firm(const asm_statement_t *statement)
4540 bool needs_memory = false;
4542 if (statement->is_volatile) {
4543 needs_memory = true;
4546 size_t n_clobbers = 0;
4547 asm_clobber_t *clobber = statement->clobbers;
4548 for( ; clobber != NULL; clobber = clobber->next) {
4549 const char *clobber_str = clobber->clobber.begin;
4551 if (!be_is_valid_clobber(clobber_str)) {
4552 errorf(&statement->base.source_position,
4553 "invalid clobber '%s' specified", clobber->clobber);
4557 if (strcmp(clobber_str, "memory") == 0) {
4558 needs_memory = true;
4562 ident *id = new_id_from_str(clobber_str);
4563 obstack_ptr_grow(&asm_obst, id);
4566 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4567 ident **clobbers = NULL;
4568 if (n_clobbers > 0) {
4569 clobbers = obstack_finish(&asm_obst);
4572 size_t n_inputs = 0;
4573 asm_argument_t *argument = statement->inputs;
4574 for ( ; argument != NULL; argument = argument->next)
4576 size_t n_outputs = 0;
4577 argument = statement->outputs;
4578 for ( ; argument != NULL; argument = argument->next)
4581 unsigned next_pos = 0;
4583 ir_node *ins[n_inputs + n_outputs + 1];
4586 ir_asm_constraint *tmp_in_constraints
4587 = xmalloc(n_outputs * sizeof(tmp_in_constraints[0]));
4589 const expression_t *out_exprs[n_outputs];
4590 ir_node *out_addrs[n_outputs];
4591 size_t out_size = 0;
4593 argument = statement->outputs;
4594 for ( ; argument != NULL; argument = argument->next) {
4595 const char *constraints = argument->constraints.begin;
4596 asm_constraint_flags_t asm_flags
4597 = be_parse_asm_constraints(constraints);
4599 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4600 errorf(&statement->base.source_position,
4601 "some constraints in '%s' are not supported", constraints);
4604 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4605 errorf(&statement->base.source_position,
4606 "some constraints in '%s' are invalid", constraints);
4609 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4610 errorf(&statement->base.source_position,
4611 "no write flag specified for output constraints '%s'",
4616 unsigned pos = next_pos++;
4617 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4618 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4619 expression_t *expr = argument->expression;
4620 ir_node *addr = expression_to_addr(expr);
4621 /* in+output, construct an artifical same_as constraint on the
4623 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4625 ir_node *value = get_value_from_lvalue(expr, addr);
4627 snprintf(buf, sizeof(buf), "%d", pos);
4629 ir_asm_constraint constraint;
4630 constraint.pos = pos;
4631 constraint.constraint = new_id_from_str(buf);
4632 constraint.mode = get_ir_mode(expr->base.type);
4633 tmp_in_constraints[in_size] = constraint;
4634 ins[in_size] = value;
4639 out_exprs[out_size] = expr;
4640 out_addrs[out_size] = addr;
4642 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4643 /* pure memory ops need no input (but we have to make sure we
4644 * attach to the memory) */
4645 assert(! (asm_flags &
4646 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4647 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4648 needs_memory = true;
4650 /* we need to attach the address to the inputs */
4651 expression_t *expr = argument->expression;
4653 ir_asm_constraint constraint;
4654 constraint.pos = pos;
4655 constraint.constraint = new_id_from_str(constraints);
4656 constraint.mode = NULL;
4657 tmp_in_constraints[in_size] = constraint;
4659 ins[in_size] = expression_to_addr(expr);
4663 errorf(&statement->base.source_position,
4664 "only modifiers but no place set in constraints '%s'",
4669 ir_asm_constraint constraint;
4670 constraint.pos = pos;
4671 constraint.constraint = new_id_from_str(constraints);
4672 constraint.mode = get_ir_mode(argument->expression->base.type);
4674 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4676 assert(obstack_object_size(&asm_obst)
4677 == out_size * sizeof(ir_asm_constraint));
4678 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4681 obstack_grow(&asm_obst, tmp_in_constraints,
4682 in_size * sizeof(tmp_in_constraints[0]));
4683 free(tmp_in_constraints);
4684 /* find and count input and output arguments */
4685 argument = statement->inputs;
4686 for( ; argument != NULL; argument = argument->next) {
4687 const char *constraints = argument->constraints.begin;
4688 asm_constraint_flags_t asm_flags
4689 = be_parse_asm_constraints(constraints);
4691 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4692 errorf(&statement->base.source_position,
4693 "some constraints in '%s' are not supported", constraints);
4696 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4697 errorf(&statement->base.source_position,
4698 "some constraints in '%s' are invalid", constraints);
4701 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4702 errorf(&statement->base.source_position,
4703 "write flag specified for input constraints '%s'",
4709 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4710 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4711 /* we can treat this as "normal" input */
4712 input = expression_to_firm(argument->expression);
4713 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4714 /* pure memory ops need no input (but we have to make sure we
4715 * attach to the memory) */
4716 assert(! (asm_flags &
4717 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4718 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4719 needs_memory = true;
4720 input = expression_to_addr(argument->expression);
4722 errorf(&statement->base.source_position,
4723 "only modifiers but no place set in constraints '%s'",
4728 ir_asm_constraint constraint;
4729 constraint.pos = next_pos++;
4730 constraint.constraint = new_id_from_str(constraints);
4731 constraint.mode = get_irn_mode(input);
4733 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4734 ins[in_size++] = input;
4738 ir_asm_constraint constraint;
4739 constraint.pos = next_pos++;
4740 constraint.constraint = new_id_from_str("");
4741 constraint.mode = mode_M;
4743 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4744 ins[in_size++] = get_store();
4747 assert(obstack_object_size(&asm_obst)
4748 == in_size * sizeof(ir_asm_constraint));
4749 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4751 /* create asm node */
4752 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4754 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4756 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4757 out_size, output_constraints,
4758 n_clobbers, clobbers, asm_text);
4760 if (statement->is_volatile) {
4761 set_irn_pinned(node, op_pin_state_pinned);
4763 set_irn_pinned(node, op_pin_state_floats);
4766 /* create output projs & connect them */
4768 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4773 for (i = 0; i < out_size; ++i) {
4774 const expression_t *out_expr = out_exprs[i];
4776 ir_mode *mode = get_ir_mode(out_expr->base.type);
4777 ir_node *proj = new_Proj(node, mode, pn);
4778 ir_node *addr = out_addrs[i];
4780 set_value_for_expression_addr(out_expr, proj, addr);
4784 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4785 statement_to_firm(statement->try_statement);
4786 warningf(&statement->base.source_position, "structured exception handling ignored");
4789 static void leave_statement_to_firm(leave_statement_t *statement) {
4790 errorf(&statement->base.source_position, "__leave not supported yet");
4794 * Transform a statement.
4796 static void statement_to_firm(statement_t *statement)
4799 assert(!statement->base.transformed);
4800 statement->base.transformed = true;
4803 switch(statement->kind) {
4804 case STATEMENT_INVALID:
4805 panic("invalid statement found");
4807 case STATEMENT_EMPTY:
4810 case STATEMENT_COMPOUND:
4811 compound_statement_to_firm(&statement->compound);
4813 case STATEMENT_RETURN:
4814 return_statement_to_firm(&statement->returns);
4816 case STATEMENT_EXPRESSION:
4817 expression_statement_to_firm(&statement->expression);
4820 if_statement_to_firm(&statement->ifs);
4822 case STATEMENT_WHILE:
4823 while_statement_to_firm(&statement->whiles);
4825 case STATEMENT_DO_WHILE:
4826 do_while_statement_to_firm(&statement->do_while);
4828 case STATEMENT_DECLARATION:
4829 declaration_statement_to_firm(&statement->declaration);
4831 case STATEMENT_BREAK:
4832 create_jump_statement(statement, get_break_label());
4834 case STATEMENT_CONTINUE:
4835 create_jump_statement(statement, continue_label);
4837 case STATEMENT_SWITCH:
4838 switch_statement_to_firm(&statement->switchs);
4840 case STATEMENT_CASE_LABEL:
4841 case_label_to_firm(&statement->case_label);
4844 for_statement_to_firm(&statement->fors);
4846 case STATEMENT_LABEL:
4847 label_to_firm(&statement->label);
4849 case STATEMENT_GOTO:
4850 goto_to_firm(&statement->gotos);
4853 asm_statement_to_firm(&statement->asms);
4855 case STATEMENT_MS_TRY:
4856 ms_try_statement_to_firm(&statement->ms_try);
4858 case STATEMENT_LEAVE:
4859 leave_statement_to_firm(&statement->leave);
4862 panic("Statement not implemented\n");
4865 static int count_decls_in_expression(const expression_t *expression);
4867 static int count_local_declarations(const declaration_t * decl,
4868 const declaration_t *const end)
4871 for (; decl != end; decl = decl->next) {
4872 if (decl->namespc != NAMESPACE_NORMAL)
4874 type_t *type = skip_typeref(decl->type);
4876 if (!decl->address_taken && is_type_scalar(type))
4878 const initializer_t *initializer = decl->init.initializer;
4879 /* FIXME: should walk initializer hierarchies... */
4880 if (initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4881 count += count_decls_in_expression(initializer->value.value);
4887 static int count_decls_in_expression(const expression_t *expression) {
4890 if (expression == NULL)
4893 switch((expression_kind_t) expression->base.kind) {
4894 case EXPR_STATEMENT:
4895 return count_decls_in_stmts(expression->statement.statement);
4897 int count_left = count_decls_in_expression(expression->binary.left);
4898 int count_right = count_decls_in_expression(expression->binary.right);
4899 return count_left + count_right;
4902 return count_decls_in_expression(expression->unary.value);
4904 call_argument_t *argument = expression->call.arguments;
4905 for( ; argument != NULL; argument = argument->next) {
4906 count += count_decls_in_expression(argument->expression);
4913 panic("unexpected expression kind");
4915 case EXPR_COMPOUND_LITERAL:
4919 case EXPR_CONDITIONAL:
4920 count += count_decls_in_expression(expression->conditional.condition);
4921 count += count_decls_in_expression(expression->conditional.true_expression);
4922 count += count_decls_in_expression(expression->conditional.false_expression);
4925 case EXPR_BUILTIN_PREFETCH:
4926 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4927 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4928 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4931 case EXPR_BUILTIN_CONSTANT_P:
4932 count += count_decls_in_expression(expression->builtin_constant.value);
4936 count += count_decls_in_expression(expression->select.compound);
4939 case EXPR_ARRAY_ACCESS:
4940 count += count_decls_in_expression(expression->array_access.array_ref);
4941 count += count_decls_in_expression(expression->array_access.index);
4944 case EXPR_CLASSIFY_TYPE:
4945 count += count_decls_in_expression(expression->classify_type.type_expression);
4949 case EXPR_ALIGNOF: {
4950 expression_t *tp_expression = expression->typeprop.tp_expression;
4951 if (tp_expression != NULL) {
4952 count += count_decls_in_expression(tp_expression);
4958 case EXPR_REFERENCE:
4960 case EXPR_CHARACTER_CONSTANT:
4961 case EXPR_WIDE_CHARACTER_CONSTANT:
4962 case EXPR_STRING_LITERAL:
4963 case EXPR_WIDE_STRING_LITERAL:
4965 case EXPR_BUILTIN_SYMBOL:
4971 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4972 * (or implement all the missing expressions here/implement a walker)
4978 static int count_decls_in_stmts(const statement_t *stmt)
4981 for (; stmt != NULL; stmt = stmt->base.next) {
4982 switch (stmt->kind) {
4983 case STATEMENT_EMPTY:
4986 case STATEMENT_DECLARATION: {
4987 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4988 count += count_local_declarations(decl_stmt->declarations_begin,
4989 decl_stmt->declarations_end->next);
4993 case STATEMENT_COMPOUND: {
4994 const compound_statement_t *const comp =
4996 count += count_decls_in_stmts(comp->statements);
5000 case STATEMENT_IF: {
5001 const if_statement_t *const if_stmt = &stmt->ifs;
5002 count += count_decls_in_expression(if_stmt->condition);
5003 count += count_decls_in_stmts(if_stmt->true_statement);
5004 count += count_decls_in_stmts(if_stmt->false_statement);
5008 case STATEMENT_SWITCH: {
5009 const switch_statement_t *const switch_stmt = &stmt->switchs;
5010 count += count_decls_in_expression(switch_stmt->expression);
5011 count += count_decls_in_stmts(switch_stmt->body);
5015 case STATEMENT_LABEL: {
5016 const label_statement_t *const label_stmt = &stmt->label;
5017 if (label_stmt->statement != NULL) {
5018 count += count_decls_in_stmts(label_stmt->statement);
5023 case STATEMENT_WHILE: {
5024 const while_statement_t *const while_stmt = &stmt->whiles;
5025 count += count_decls_in_expression(while_stmt->condition);
5026 count += count_decls_in_stmts(while_stmt->body);
5030 case STATEMENT_DO_WHILE: {
5031 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
5032 count += count_decls_in_expression(do_while_stmt->condition);
5033 count += count_decls_in_stmts(do_while_stmt->body);
5037 case STATEMENT_FOR: {
5038 const for_statement_t *const for_stmt = &stmt->fors;
5039 count += count_local_declarations(for_stmt->scope.declarations, NULL);
5040 count += count_decls_in_expression(for_stmt->initialisation);
5041 count += count_decls_in_expression(for_stmt->condition);
5042 count += count_decls_in_expression(for_stmt->step);
5043 count += count_decls_in_stmts(for_stmt->body);
5047 case STATEMENT_CASE_LABEL: {
5048 const case_label_statement_t *label = &stmt->case_label;
5049 count += count_decls_in_expression(label->expression);
5050 if (label->statement != NULL) {
5051 count += count_decls_in_stmts(label->statement);
5057 case STATEMENT_BREAK:
5058 case STATEMENT_CONTINUE:
5061 case STATEMENT_EXPRESSION: {
5062 const expression_statement_t *expr_stmt = &stmt->expression;
5063 count += count_decls_in_expression(expr_stmt->expression);
5067 case STATEMENT_GOTO:
5068 case STATEMENT_LEAVE:
5069 case STATEMENT_INVALID:
5072 case STATEMENT_RETURN: {
5073 const return_statement_t *ret_stmt = &stmt->returns;
5074 count += count_decls_in_expression(ret_stmt->value);
5078 case STATEMENT_MS_TRY: {
5079 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
5080 count += count_decls_in_stmts(try_stmt->try_statement);
5081 if (try_stmt->except_expression != NULL)
5082 count += count_decls_in_expression(try_stmt->except_expression);
5083 count += count_decls_in_stmts(try_stmt->final_statement);
5091 static int get_function_n_local_vars(declaration_t *declaration)
5095 /* count parameters */
5096 count += count_local_declarations(declaration->scope.declarations, NULL);
5098 /* count local variables declared in body */
5099 count += count_decls_in_stmts(declaration->init.statement);
5104 static void initialize_function_parameters(declaration_t *declaration)
5106 ir_graph *irg = current_ir_graph;
5107 ir_node *args = get_irg_args(irg);
5108 ir_node *start_block = get_irg_start_block(irg);
5109 ir_type *function_irtype = get_ir_type(declaration->type);
5112 declaration_t *parameter = declaration->scope.declarations;
5113 for( ; parameter != NULL; parameter = parameter->next, ++n) {
5114 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
5115 type_t *type = skip_typeref(parameter->type);
5117 bool needs_entity = parameter->address_taken;
5118 assert(!is_type_array(type));
5119 if (is_type_compound(type)) {
5120 needs_entity = true;
5124 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5125 ident *id = new_id_from_str(parameter->symbol->string);
5126 set_entity_ident(entity, id);
5128 parameter->declaration_kind
5129 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5130 parameter->v.entity = entity;
5134 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5135 ir_mode *param_mode = get_type_mode(param_irtype);
5138 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5140 ir_mode *mode = get_ir_mode(type);
5141 value = create_conv(NULL, value, mode);
5142 value = do_strict_conv(NULL, value);
5144 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
5145 parameter->v.value_number = next_value_number_function;
5146 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
5147 ++next_value_number_function;
5149 set_value(parameter->v.value_number, value);
5154 * Handle additional decl modifiers for IR-graphs
5156 * @param irg the IR-graph
5157 * @param dec_modifiers additional modifiers
5159 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5161 if (decl_modifiers & DM_NORETURN) {
5162 /* TRUE if the declaration includes the Microsoft
5163 __declspec(noreturn) specifier. */
5164 set_irg_additional_property(irg, mtp_property_noreturn);
5166 if (decl_modifiers & DM_NOTHROW) {
5167 /* TRUE if the declaration includes the Microsoft
5168 __declspec(nothrow) specifier. */
5169 set_irg_additional_property(irg, mtp_property_nothrow);
5171 if (decl_modifiers & DM_NAKED) {
5172 /* TRUE if the declaration includes the Microsoft
5173 __declspec(naked) specifier. */
5174 set_irg_additional_property(irg, mtp_property_naked);
5176 if (decl_modifiers & DM_FORCEINLINE) {
5177 /* TRUE if the declaration includes the
5178 Microsoft __forceinline specifier. */
5179 set_irg_inline_property(irg, irg_inline_forced);
5181 if (decl_modifiers & DM_NOINLINE) {
5182 /* TRUE if the declaration includes the Microsoft
5183 __declspec(noinline) specifier. */
5184 set_irg_inline_property(irg, irg_inline_forbidden);
5188 static void add_function_pointer(ir_type *segment, ir_entity *method,
5189 const char *unique_template)
5191 ir_type *method_type = get_entity_type(method);
5192 ident *id = id_unique(unique_template);
5193 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5195 ident *ide = id_unique(unique_template);
5196 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5197 ir_graph *irg = get_const_code_irg();
5198 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5201 set_entity_compiler_generated(ptr, 1);
5202 set_entity_variability(ptr, variability_constant);
5203 set_atomic_ent_value(ptr, val);
5207 * Create code for a function.
5209 static void create_function(declaration_t *declaration)
5211 ir_entity *function_entity = get_function_entity(declaration);
5213 if (declaration->init.statement == NULL)
5216 if (declaration->modifiers & DM_CONSTRUCTOR) {
5217 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5218 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5220 if (declaration->modifiers & DM_DESTRUCTOR) {
5221 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5222 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5225 current_function_decl = declaration;
5226 current_function_name = NULL;
5227 current_funcsig = NULL;
5229 assert(imature_blocks == NULL);
5230 imature_blocks = NEW_ARR_F(ir_node*, 0);
5232 int n_local_vars = get_function_n_local_vars(declaration);
5233 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5235 set_irg_fp_model(irg, firm_opt.fp_model);
5236 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5237 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5239 ir_node *first_block = get_cur_block();
5241 /* set inline flags */
5242 if (declaration->is_inline)
5243 set_irg_inline_property(irg, irg_inline_recomended);
5244 handle_decl_modifier_irg(irg, declaration->modifiers);
5246 next_value_number_function = 0;
5247 initialize_function_parameters(declaration);
5249 statement_to_firm(declaration->init.statement);
5251 ir_node *end_block = get_irg_end_block(irg);
5253 /* do we have a return statement yet? */
5254 if (get_cur_block() != NULL) {
5255 type_t *type = skip_typeref(declaration->type);
5256 assert(is_type_function(type));
5257 const function_type_t *func_type = &type->function;
5258 const type_t *return_type
5259 = skip_typeref(func_type->return_type);
5262 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5263 ret = new_Return(get_store(), 0, NULL);
5266 if (is_type_scalar(return_type)) {
5267 mode = get_ir_mode(func_type->return_type);
5273 /* ยง5.1.2.2.3 main implicitly returns 0 */
5274 if (strcmp(declaration->symbol->string, "main") == 0) {
5275 in[0] = new_Const(mode, get_mode_null(mode));
5277 in[0] = new_Unknown(mode);
5278 if (warning.return_type) {
5279 warningf(&declaration->source_position,
5280 "missing return statement at end of non-void function '%Y'",
5281 declaration->symbol);
5284 ret = new_Return(get_store(), 1, in);
5286 add_immBlock_pred(end_block, ret);
5289 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
5290 mature_immBlock(imature_blocks[i]);
5292 DEL_ARR_F(imature_blocks);
5293 imature_blocks = NULL;
5295 mature_immBlock(first_block);
5296 mature_immBlock(end_block);
5298 irg_finalize_cons(irg);
5300 /* finalize the frame type */
5301 ir_type *frame_type = get_irg_frame_type(irg);
5302 int n = get_compound_n_members(frame_type);
5305 for(int i = 0; i < n; ++i) {
5306 ir_entity *entity = get_compound_member(frame_type, i);
5307 ir_type *entity_type = get_entity_type(entity);
5309 int align = get_type_alignment_bytes(entity_type);
5310 if (align > align_all)
5314 misalign = offset % align;
5316 offset += align - misalign;
5320 set_entity_offset(entity, offset);
5321 offset += get_type_size_bytes(entity_type);
5323 set_type_size_bytes(frame_type, offset);
5324 set_type_alignment_bytes(frame_type, align_all);
5329 static void scope_to_firm(scope_t *scope)
5331 /* first pass: create declarations */
5332 declaration_t *declaration = scope->declarations;
5333 for( ; declaration != NULL; declaration = declaration->next) {
5334 if (declaration->namespc != NAMESPACE_NORMAL)
5336 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5337 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5339 if (declaration->symbol == NULL)
5342 type_t *type = skip_typeref(declaration->type);
5343 if (is_type_function(type)) {
5344 get_function_entity(declaration);
5346 create_global_variable(declaration);
5350 /* second pass: create code/initializers */
5351 declaration = scope->declarations;
5352 for( ; declaration != NULL; declaration = declaration->next) {
5353 if (declaration->namespc != NAMESPACE_NORMAL)
5355 if (declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5356 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5358 if (declaration->symbol == NULL)
5361 type_t *type = declaration->type;
5362 if (type->kind == TYPE_FUNCTION) {
5363 create_function(declaration);
5365 assert(declaration->declaration_kind
5366 == DECLARATION_KIND_GLOBAL_VARIABLE);
5367 current_ir_graph = get_const_code_irg();
5368 create_declaration_initializer(declaration);
5373 void init_ast2firm(void)
5375 obstack_init(&asm_obst);
5376 init_atomic_modes();
5378 id_underscore = new_id_from_chars("_", 1);
5379 id_imp = new_id_from_chars("__imp_", 6);
5381 /* OS option must be set to the backend */
5382 const char *s = "ia32-gasmode=linux";
5383 switch (firm_opt.os_support) {
5384 case OS_SUPPORT_MINGW:
5385 create_ld_ident = create_ld_ident_win32;
5386 s = "ia32-gasmode=mingw";
5388 case OS_SUPPORT_LINUX:
5389 create_ld_ident = create_ld_ident_linux_elf;
5390 s = "ia32-gasmode=elf";
5392 case OS_SUPPORT_MACHO:
5393 create_ld_ident = create_ld_ident_macho;
5394 s = "ia32-gasmode=macho";
5397 int res = firm_be_option(s);
5401 /* create idents for all known runtime functions */
5402 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5403 rts_idents[i] = new_id_from_str(rts_data[i].name);
5406 entitymap_init(&entitymap);
5409 static void init_ir_types(void)
5411 static int ir_types_initialized = 0;
5412 if (ir_types_initialized)
5414 ir_types_initialized = 1;
5416 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5417 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5418 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5420 ir_type_int = get_ir_type(type_int);
5421 ir_type_const_char = get_ir_type(type_const_char);
5422 ir_type_wchar_t = get_ir_type(type_wchar_t);
5423 ir_type_void = get_ir_type(type_void);
5426 void exit_ast2firm(void)
5428 entitymap_destroy(&entitymap);
5429 obstack_free(&asm_obst, NULL);
5432 static void global_asm_to_firm(statement_t *s)
5434 for (; s != NULL; s = s->base.next) {
5435 assert(s->kind == STATEMENT_ASM);
5437 char const *const text = s->asms.asm_text.begin;
5438 size_t size = s->asms.asm_text.size;
5440 /* skip the last \0 */
5441 if (text[size - 1] == '\0')
5444 ident *const id = new_id_from_chars(text, size);
5449 void translation_unit_to_firm(translation_unit_t *unit)
5451 /* just to be sure */
5452 continue_label = NULL;
5454 current_switch_cond = NULL;
5458 scope_to_firm(&unit->scope);
5459 global_asm_to_firm(unit->global_asm);