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>
31 #include "adt/error.h"
32 #include "adt/array.h"
38 #include "diagnostic.h"
39 #include "lang_features.h"
42 #include "entitymap_t.h"
43 #include "driver/firm_opt.h"
44 #include "driver/firm_cmdline.h"
46 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
48 /* some idents needed for name mangling */
49 static ident *id_underscore;
52 static ir_type *ir_type_const_char;
53 static ir_type *ir_type_wchar_t;
54 static ir_type *ir_type_void;
55 static ir_type *ir_type_int;
57 static type_t *type_const_char;
59 static int next_value_number_function;
60 static ir_node *continue_label;
61 static ir_node *break_label;
62 static ir_node *current_switch_cond;
63 static bool saw_default_label;
64 static ir_node **imature_blocks;
66 static const declaration_t *current_function_decl;
67 static ir_node *current_function_name;
68 static ir_node *current_funcsig;
70 static entitymap_t entitymap;
72 static struct obstack asm_obst;
74 typedef enum declaration_kind_t {
75 DECLARATION_KIND_UNKNOWN,
76 DECLARATION_KIND_FUNCTION,
77 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
78 DECLARATION_KIND_GLOBAL_VARIABLE,
79 DECLARATION_KIND_LOCAL_VARIABLE,
80 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
81 DECLARATION_KIND_COMPOUND_MEMBER,
82 DECLARATION_KIND_LABEL_BLOCK,
83 DECLARATION_KIND_ENUM_ENTRY,
84 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
85 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
89 static ir_type *get_ir_type(type_t *type);
90 static ir_type *get_ir_type_incomplete(type_t *type);
91 static int count_decls_in_stmts(const statement_t *stmt);
93 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
95 const declaration_t *declaration = get_irg_loc_description(irg, pos);
97 warningf(&declaration->source_position,
98 "variable '%#T' might be used uninitialized",
99 declaration->type, declaration->symbol);
100 return new_r_Unknown(irg, mode);
103 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
105 const source_position_t *pos = (const source_position_t*) dbg;
108 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
112 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
114 const source_position_t *pos = (const source_position_t*) dbg;
119 return pos->input_name;
122 static dbg_info *get_dbg_info(const source_position_t *pos)
124 return (dbg_info*) pos;
127 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
129 static ir_mode *mode_int, *mode_uint;
131 static ir_node *_expression_to_firm(const expression_t *expression);
132 static ir_node *expression_to_firm(const expression_t *expression);
133 static inline ir_mode *get_ir_mode(type_t *type);
134 static void create_local_declaration(declaration_t *declaration);
136 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
138 unsigned flags = get_atomic_type_flags(kind);
139 unsigned size = get_atomic_type_size(kind);
140 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
141 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
144 unsigned bit_size = size * 8;
145 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
146 ir_mode_arithmetic arithmetic;
147 unsigned modulo_shift;
149 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
150 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
151 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
152 sort = irms_int_number;
153 arithmetic = irma_twos_complement;
154 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
156 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
157 snprintf(name, sizeof(name), "f%d", bit_size);
158 sort = irms_float_number;
159 arithmetic = irma_ieee754;
162 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
170 * Initialises the atomic modes depending on the machine size.
172 static void init_atomic_modes(void)
174 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
175 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
177 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
178 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
180 /* there's no real void type in firm */
181 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
183 /* initialize pointer modes */
185 ir_mode_sort sort = irms_reference;
186 unsigned bit_size = machine_size;
188 ir_mode_arithmetic arithmetic = irma_twos_complement;
189 unsigned modulo_shift
190 = bit_size < machine_size ? machine_size : bit_size;
192 snprintf(name, sizeof(name), "p%d", machine_size);
193 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
196 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
197 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
199 /* Hmm, pointers should be machine size */
200 set_modeP_data(ptr_mode);
201 set_modeP_code(ptr_mode);
204 static unsigned get_compound_type_size(compound_type_t *type)
206 ir_type *irtype = get_ir_type((type_t*) type);
207 return get_type_size_bytes(irtype);
210 static unsigned get_array_type_size(array_type_t *type)
212 assert(!type->is_vla);
213 ir_type *irtype = get_ir_type((type_t*) type);
214 return get_type_size_bytes(irtype);
218 static unsigned get_type_size_const(type_t *type)
220 type = skip_typeref(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);
340 static ir_type *create_method_type(const function_type_t *function_type)
342 type_t *return_type = function_type->return_type;
344 ident *id = id_unique("functiontype.%u");
345 int n_parameters = count_parameters(function_type);
346 int n_results = return_type == type_void ? 0 : 1;
347 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
348 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
350 if (return_type != type_void) {
351 ir_type *restype = get_ir_type(return_type);
352 set_method_res_type(irtype, 0, restype);
355 function_parameter_t *parameter = function_type->parameters;
357 for ( ; parameter != NULL; parameter = parameter->next) {
358 ir_type *p_irtype = get_ir_type(parameter->type);
359 set_method_param_type(irtype, n, p_irtype);
363 if (function_type->variadic || function_type->unspecified_parameters) {
364 set_method_variadicity(irtype, variadicity_variadic);
370 static ir_type *create_pointer_type(pointer_type_t *type)
372 type_t *points_to = type->points_to;
373 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
374 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
375 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
376 ir_points_to, mode_P_data, dbgi);
381 static ir_type *create_array_type(array_type_t *type)
383 type_t *element_type = type->element_type;
384 ir_type *ir_element_type = get_ir_type(element_type);
386 ident *id = id_unique("array.%u");
387 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
388 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
390 const int align = get_type_alignment_bytes(ir_element_type);
391 set_type_alignment_bytes(ir_type, align);
393 if(type->size_constant) {
394 int n_elements = type->size;
396 set_array_bounds_int(ir_type, 0, 0, n_elements);
398 size_t elemsize = get_type_size_bytes(ir_element_type);
399 if(elemsize % align > 0) {
400 elemsize += align - (elemsize % align);
402 set_type_size_bytes(ir_type, n_elements * elemsize);
404 set_array_lower_bound_int(ir_type, 0, 0);
406 set_type_state(ir_type, layout_fixed);
412 * Return the signed integer type of size bits.
414 * @param size the size
416 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
419 static ir_mode *s_modes[64 + 1] = {NULL, };
423 if (size <= 0 || size > 64)
426 mode = s_modes[size];
430 snprintf(name, sizeof(name), "bf_I%u", size);
431 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
432 size <= 32 ? 32 : size );
433 s_modes[size] = mode;
437 snprintf(name, sizeof(name), "I%u", size);
438 ident *id = new_id_from_str(name);
439 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
440 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
441 set_primitive_base_type(res, base_tp);
447 * Return the unsigned integer type of size bits.
449 * @param size the size
451 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
454 static ir_mode *u_modes[64 + 1] = {NULL, };
458 if (size <= 0 || size > 64)
461 mode = u_modes[size];
465 snprintf(name, sizeof(name), "bf_U%u", size);
466 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
467 size <= 32 ? 32 : size );
468 u_modes[size] = mode;
473 snprintf(name, sizeof(name), "U%u", size);
474 ident *id = new_id_from_str(name);
475 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
476 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
477 set_primitive_base_type(res, base_tp);
482 static ir_type *create_bitfield_type(bitfield_type_t *const type)
484 type_t *base = skip_typeref(type->base_type);
485 assert(base->kind == TYPE_ATOMIC);
486 ir_type *irbase = get_ir_type(base);
488 unsigned size = fold_constant(type->size);
490 assert(!is_type_float(base));
491 if(is_type_signed(base)) {
492 return get_signed_int_type_for_bit_size(irbase, size);
494 return get_unsigned_int_type_for_bit_size(irbase, size);
498 #define INVALID_TYPE ((ir_type_ptr)-1)
501 COMPOUND_IS_STRUCT = false,
502 COMPOUND_IS_UNION = true
506 * Construct firm type from ast struct type.
508 * As anonymous inner structs get flattened to a single firm type, we might get
509 * irtype, outer_offset and out_align passed (they represent the position of
510 * the anonymous inner struct inside the resulting firm struct)
512 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
513 size_t *outer_offset, size_t *outer_align,
514 bool incomplete, bool is_union)
516 declaration_t *declaration = type->declaration;
517 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
519 if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
520 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
522 return declaration->v.irtype;
524 size_t align_all = 1;
526 size_t bit_offset = 0;
530 symbol_t *symbol = declaration->symbol;
533 id = new_id_from_str(symbol->string);
536 id = id_unique("__anonymous_union.%u");
538 id = id_unique("__anonymous_struct.%u");
541 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
544 irtype = new_d_type_union(id, dbgi);
546 irtype = new_d_type_struct(id, dbgi);
549 declaration->declaration_kind
550 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
551 declaration->v.irtype = irtype;
552 //type->base.firm_type = irtype;
554 offset = *outer_offset;
555 align_all = *outer_align;
561 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
563 declaration_t *entry = declaration->scope.declarations;
564 for( ; entry != NULL; entry = entry->next) {
565 if(entry->namespc != NAMESPACE_NORMAL)
568 size_t prev_offset = offset;
570 symbol_t *symbol = entry->symbol;
571 type_t *entry_type = skip_typeref(entry->type);
572 dbg_info *dbgi = get_dbg_info(&entry->source_position);
576 ident = new_id_from_str(symbol->string);
578 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
579 create_compound_type(&entry_type->compound, irtype, &offset,
580 &align_all, false, COMPOUND_IS_STRUCT);
581 goto finished_member;
582 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
583 create_compound_type(&entry_type->compound, irtype, &offset,
584 &align_all, false, COMPOUND_IS_UNION);
585 goto finished_member;
587 assert(entry_type->kind == TYPE_BITFIELD);
589 ident = id_unique("anon.%u");
592 ir_type *base_irtype;
593 if(entry_type->kind == TYPE_BITFIELD) {
594 base_irtype = get_ir_type(entry_type->bitfield.base_type);
596 base_irtype = get_ir_type(entry_type);
599 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
600 size_t misalign = offset % entry_alignment;
602 ir_type *entry_irtype = get_ir_type(entry_type);
603 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
606 size_t bits_remainder;
607 if(entry_type->kind == TYPE_BITFIELD) {
608 size_t size_bits = fold_constant(entry_type->bitfield.size);
609 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
611 if(size_bits > rest_size_bits) {
612 /* start a new bucket */
613 offset += entry_alignment - misalign;
619 /* put into current bucket */
620 base = offset - misalign;
621 bits_remainder = misalign * 8 + bit_offset;
624 offset += size_bits / 8;
625 bit_offset = bit_offset + (size_bits % 8);
627 size_t entry_size = get_type_size_bytes(base_irtype);
628 if(misalign > 0 || bit_offset > 0)
629 offset += entry_alignment - misalign;
633 offset += entry_size;
637 if(entry_alignment > align_all) {
638 if(entry_alignment % align_all != 0) {
639 panic("uneven alignments not supported yet");
641 align_all = entry_alignment;
644 set_entity_offset(entity, base);
645 set_entity_offset_bits_remainder(entity,
646 (unsigned char) bits_remainder);
647 //add_struct_member(irtype, entity);
648 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
649 assert(entry->v.entity == NULL);
650 entry->v.entity = entity;
654 size_t entry_size = offset - prev_offset;
655 if (entry_size > size) {
667 size_t misalign = offset % align_all;
668 if(misalign > 0 || bit_offset > 0) {
669 size += align_all - misalign;
672 if(outer_offset != NULL) {
674 *outer_offset = offset;
676 *outer_offset += size;
679 if (align_all > *outer_align) {
680 if(align_all % *outer_align != 0) {
681 panic("uneven alignments not supported yet");
683 *outer_align = align_all;
686 set_type_alignment_bytes(irtype, align_all);
687 set_type_size_bytes(irtype, size);
688 set_type_state(irtype, layout_fixed);
694 static ir_type *create_enum_type(enum_type_t *const type)
696 type->base.firm_type = ir_type_int;
698 ir_mode *const mode = mode_int;
699 tarval *const one = get_mode_one(mode);
700 tarval * tv_next = get_tarval_null(mode);
702 declaration_t *declaration = type->declaration->next;
703 for (; declaration != NULL; declaration = declaration->next) {
704 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
707 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
709 expression_t *const init = declaration->init.enum_value;
711 ir_node *const cnst = expression_to_firm(init);
712 if (!is_Const(cnst)) {
713 panic("couldn't fold constant");
715 tv_next = get_Const_tarval(cnst);
717 declaration->v.enum_val = tv_next;
718 tv_next = tarval_add(tv_next, one);
724 static ir_type *get_ir_type_incomplete(type_t *type)
726 assert(type != NULL);
727 type = skip_typeref(type);
729 if (type->base.firm_type != NULL) {
730 assert(type->base.firm_type != INVALID_TYPE);
731 return type->base.firm_type;
734 switch (type->kind) {
735 case TYPE_COMPOUND_STRUCT:
736 return create_compound_type(&type->compound, NULL, NULL, NULL,
737 true, COMPOUND_IS_STRUCT);
739 case TYPE_COMPOUND_UNION:
740 return create_compound_type(&type->compound, NULL, NULL, NULL,
741 true, COMPOUND_IS_UNION);
743 return get_ir_type(type);
747 static ir_type *get_ir_type(type_t *type)
749 assert(type != NULL);
751 type = skip_typeref(type);
753 if (type->base.firm_type != NULL) {
754 assert(type->base.firm_type != INVALID_TYPE);
755 return type->base.firm_type;
758 ir_type *firm_type = NULL;
759 switch (type->kind) {
761 panic("error type occurred");
763 firm_type = create_atomic_type(&type->atomic);
766 firm_type = create_complex_type(&type->complex);
769 firm_type = create_imaginary_type(&type->imaginary);
772 firm_type = create_method_type(&type->function);
775 firm_type = create_pointer_type(&type->pointer);
778 firm_type = create_array_type(&type->array);
780 case TYPE_COMPOUND_STRUCT:
781 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
782 false, COMPOUND_IS_STRUCT);
784 case TYPE_COMPOUND_UNION:
785 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
786 false, COMPOUND_IS_UNION);
789 firm_type = create_enum_type(&type->enumt);
792 firm_type = get_ir_type(type->builtin.real_type);
795 firm_type = create_bitfield_type(&type->bitfield);
803 if(firm_type == NULL)
804 panic("unknown type found");
806 type->base.firm_type = firm_type;
810 static inline ir_mode *get_ir_mode(type_t *type)
812 ir_type *irtype = get_ir_type(type);
814 /* firm doesn't report a mode for arrays somehow... */
815 if(is_Array_type(irtype)) {
819 ir_mode *mode = get_type_mode(irtype);
820 assert(mode != NULL);
824 /** Names of the runtime functions. */
825 static const struct {
826 int id; /**< the rts id */
827 int n_res; /**< number of return values */
828 const char *name; /**< the name of the rts function */
829 int n_params; /**< number of parameters */
830 unsigned flags; /**< language flags */
832 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
833 { rts_abort, 0, "abort", 0, _C89 },
834 { rts_alloca, 1, "alloca", 1, _ALL },
835 { rts_abs, 1, "abs", 1, _C89 },
836 { rts_labs, 1, "labs", 1, _C89 },
837 { rts_llabs, 1, "llabs", 1, _C99 },
838 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
840 { rts_fabs, 1, "fabs", 1, _C89 },
841 { rts_sqrt, 1, "sqrt", 1, _C89 },
842 { rts_cbrt, 1, "cbrt", 1, _C99 },
843 { rts_exp, 1, "exp", 1, _C89 },
844 { rts_exp2, 1, "exp2", 1, _C89 },
845 { rts_exp10, 1, "exp10", 1, _GNUC },
846 { rts_log, 1, "log", 1, _C89 },
847 { rts_log2, 1, "log2", 1, _C89 },
848 { rts_log10, 1, "log10", 1, _C89 },
849 { rts_pow, 1, "pow", 2, _C89 },
850 { rts_sin, 1, "sin", 1, _C89 },
851 { rts_cos, 1, "cos", 1, _C89 },
852 { rts_tan, 1, "tan", 1, _C89 },
853 { rts_asin, 1, "asin", 1, _C89 },
854 { rts_acos, 1, "acos", 1, _C89 },
855 { rts_atan, 1, "atan", 1, _C89 },
856 { rts_sinh, 1, "sinh", 1, _C89 },
857 { rts_cosh, 1, "cosh", 1, _C89 },
858 { rts_tanh, 1, "tanh", 1, _C89 },
860 { rts_fabsf, 1, "fabsf", 1, _C99 },
861 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
862 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
863 { rts_expf, 1, "expf", 1, _C99 },
864 { rts_exp2f, 1, "exp2f", 1, _C99 },
865 { rts_exp10f, 1, "exp10f", 1, _GNUC },
866 { rts_logf, 1, "logf", 1, _C99 },
867 { rts_log2f, 1, "log2f", 1, _C99 },
868 { rts_log10f, 1, "log10f", 1, _C99 },
869 { rts_powf, 1, "powf", 2, _C99 },
870 { rts_sinf, 1, "sinf", 1, _C99 },
871 { rts_cosf, 1, "cosf", 1, _C99 },
872 { rts_tanf, 1, "tanf", 1, _C99 },
873 { rts_asinf, 1, "asinf", 1, _C99 },
874 { rts_acosf, 1, "acosf", 1, _C99 },
875 { rts_atanf, 1, "atanf", 1, _C99 },
876 { rts_sinhf, 1, "sinhf", 1, _C99 },
877 { rts_coshf, 1, "coshf", 1, _C99 },
878 { rts_tanhf, 1, "tanhf", 1, _C99 },
880 { rts_fabsl, 1, "fabsl", 1, _C99 },
881 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
882 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
883 { rts_expl, 1, "expl", 1, _C99 },
884 { rts_exp2l, 1, "exp2l", 1, _C99 },
885 { rts_exp10l, 1, "exp10l", 1, _GNUC },
886 { rts_logl, 1, "logl", 1, _C99 },
887 { rts_log2l, 1, "log2l", 1, _C99 },
888 { rts_log10l, 1, "log10l", 1, _C99 },
889 { rts_powl, 1, "powl", 2, _C99 },
890 { rts_sinl, 1, "sinl", 1, _C99 },
891 { rts_cosl, 1, "cosl", 1, _C99 },
892 { rts_tanl, 1, "tanl", 1, _C99 },
893 { rts_asinl, 1, "asinl", 1, _C99 },
894 { rts_acosl, 1, "acosl", 1, _C99 },
895 { rts_atanl, 1, "atanl", 1, _C99 },
896 { rts_sinhl, 1, "sinhl", 1, _C99 },
897 { rts_coshl, 1, "coshl", 1, _C99 },
898 { rts_tanhl, 1, "tanhl", 1, _C99 },
900 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
901 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
902 { rts_strcmp, 1, "strcmp", 2, _C89 },
903 { rts_strncmp, 1, "strncmp", 3, _C89 }
906 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
909 * Mangles an entity linker (ld) name for win32 usage.
911 * @param ent the entity to be mangled
912 * @param declaration the declaration
914 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
918 if (is_Method_type(get_entity_type(ent)))
919 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
921 /* always add an underscore in win32 */
922 id = mangle(id_underscore, get_entity_ident(ent));
925 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
926 if (decl_modifiers & DM_DLLIMPORT) {
927 /* add prefix for imported symbols */
928 id = mangle(id_imp, id);
934 * Mangles an entity linker (ld) name for Linux ELF usage.
936 * @param ent the entity to be mangled
937 * @param declaration the declaration
939 static ident *create_ld_ident_linux_elf(ir_entity *entity,
940 declaration_t *declaration)
943 return get_entity_ident(entity);
947 * Mangles an entity linker (ld) name for Mach-O usage.
949 * @param ent the entity to be mangled
950 * @param declaration the declaration
952 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
955 ident *id = mangle(id_underscore, get_entity_ident(ent));
959 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
960 declaration_t *declaration);
961 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
964 * Creates an entity representing a function.
966 * @param declaration the function declaration
968 static ir_entity *get_function_entity(declaration_t *declaration)
970 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
971 return declaration->v.entity;
972 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
974 symbol_t *symbol = declaration->symbol;
975 ident *id = new_id_from_str(symbol->string);
977 ir_type *global_type = get_glob_type();
978 ir_type *ir_type_method = get_ir_type(declaration->type);
979 assert(is_Method_type(ir_type_method));
981 /* already an entity defined? */
982 ir_entity *entity = entitymap_get(&entitymap, symbol);
983 if (entity != NULL) {
984 if (get_entity_visibility(entity) == visibility_external_allocated
985 && declaration->init.statement != NULL) {
986 set_entity_visibility(entity, visibility_external_visible);
991 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
992 entity = new_d_entity(global_type, id, ir_type_method, dbgi);
993 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
994 if (declaration->storage_class == STORAGE_CLASS_STATIC &&
995 declaration->init.statement == NULL) {
996 /* this entity was declared, but never defined */
997 set_entity_peculiarity(entity, peculiarity_description);
999 if (declaration->storage_class == STORAGE_CLASS_STATIC
1000 || declaration->is_inline) {
1001 set_entity_visibility(entity, visibility_local);
1002 } else if (declaration->init.statement != NULL) {
1003 set_entity_visibility(entity, visibility_external_visible);
1005 set_entity_visibility(entity, visibility_external_allocated);
1007 set_entity_allocation(entity, allocation_static);
1009 /* We should check for file scope here, but as long as we compile C only
1010 this is not needed. */
1011 if (! firm_opt.freestanding) {
1012 /* check for a known runtime function */
1013 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1014 if (id != rts_idents[i])
1017 /* ignore those rts functions not necessary needed for current mode */
1018 if ((c_mode & rts_data[i].flags) == 0)
1020 assert(rts_entities[rts_data[i].id] == NULL);
1021 rts_entities[rts_data[i].id] = entity;
1025 entitymap_insert(&entitymap, symbol, entity);
1028 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1029 declaration->v.entity = entity;
1035 * Creates a Const node representing a constant.
1037 static ir_node *const_to_firm(const const_expression_t *cnst)
1039 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1040 ir_mode *mode = get_ir_mode(cnst->base.type);
1045 if(mode_is_float(mode)) {
1046 tv = new_tarval_from_double(cnst->v.float_value, mode);
1048 if(mode_is_signed(mode)) {
1049 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1051 len = snprintf(buf, sizeof(buf), "%llu",
1052 (unsigned long long) cnst->v.int_value);
1054 tv = new_tarval_from_str(buf, len, mode);
1057 return new_d_Const(dbgi, mode, tv);
1061 * Creates a Const node representing a character constant.
1063 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1065 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1066 ir_mode *mode = get_ir_mode(cnst->base.type);
1068 long long int v = 0;
1069 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1070 if (char_is_signed) {
1071 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1073 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1077 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1078 tarval *tv = new_tarval_from_str(buf, len, mode);
1080 return new_d_Const(dbgi, mode, tv);
1084 * Creates a Const node representing a wide character constant.
1086 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1088 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1089 ir_mode *mode = get_ir_mode(cnst->base.type);
1091 long long int v = cnst->v.wide_character.begin[0];
1094 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1095 tarval *tv = new_tarval_from_str(buf, len, mode);
1097 return new_d_Const(dbgi, mode, tv);
1101 * Creates a SymConst for a given entity.
1103 * @param dbgi debug info
1104 * @param mode the (reference) mode for the SymConst
1105 * @param entity the entity
1107 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1110 assert(entity != NULL);
1111 union symconst_symbol sym;
1112 sym.entity_p = entity;
1113 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1117 * Creates a SymConst node representing a string constant.
1119 * @param src_pos the source position of the string constant
1120 * @param id_prefix a prefix for the name of the generated string constant
1121 * @param value the value of the string constant
1123 static ir_node *string_to_firm(const source_position_t *const src_pos,
1124 const char *const id_prefix,
1125 const string_t *const value)
1127 ir_type *const global_type = get_glob_type();
1128 dbg_info *const dbgi = get_dbg_info(src_pos);
1129 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1130 ir_type_const_char, dbgi);
1132 ident *const id = id_unique(id_prefix);
1133 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1134 set_entity_ld_ident(entity, id);
1135 set_entity_variability(entity, variability_constant);
1136 set_entity_allocation(entity, allocation_static);
1138 ir_type *const elem_type = ir_type_const_char;
1139 ir_mode *const mode = get_type_mode(elem_type);
1141 const char* const string = value->begin;
1142 const size_t slen = value->size;
1144 set_array_lower_bound_int(type, 0, 0);
1145 set_array_upper_bound_int(type, 0, slen);
1146 set_type_size_bytes(type, slen);
1147 set_type_state(type, layout_fixed);
1149 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1150 for(size_t i = 0; i < slen; ++i) {
1151 tvs[i] = new_tarval_from_long(string[i], mode);
1154 set_array_entity_values(entity, tvs, slen);
1157 return create_symconst(dbgi, mode_P_data, entity);
1161 * Creates a SymConst node representing a string literal.
1163 * @param literal the string literal
1165 static ir_node *string_literal_to_firm(
1166 const string_literal_expression_t* literal)
1168 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1173 * Creates a SymConst node representing a wide string literal.
1175 * @param literal the wide string literal
1177 static ir_node *wide_string_literal_to_firm(
1178 const wide_string_literal_expression_t* const literal)
1180 ir_type *const global_type = get_glob_type();
1181 ir_type *const elem_type = ir_type_wchar_t;
1182 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1183 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1186 ident *const id = id_unique("Lstr.%u");
1187 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1188 set_entity_ld_ident(entity, id);
1189 set_entity_variability(entity, variability_constant);
1190 set_entity_allocation(entity, allocation_static);
1192 ir_mode *const mode = get_type_mode(elem_type);
1194 const wchar_rep_t *const string = literal->value.begin;
1195 const size_t slen = literal->value.size;
1197 set_array_lower_bound_int(type, 0, 0);
1198 set_array_upper_bound_int(type, 0, slen);
1199 set_type_size_bytes(type, slen);
1200 set_type_state(type, layout_fixed);
1202 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1203 for(size_t i = 0; i < slen; ++i) {
1204 tvs[i] = new_tarval_from_long(string[i], mode);
1207 set_array_entity_values(entity, tvs, slen);
1210 return create_symconst(dbgi, mode_P_data, entity);
1213 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1214 ir_node *const addr)
1216 ir_type *irtype = get_ir_type(type);
1217 if (is_compound_type(irtype)
1218 || is_Method_type(irtype)
1219 || is_Array_type(irtype)) {
1223 ir_mode *const mode = get_type_mode(irtype);
1224 ir_node *const memory = get_store();
1225 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1226 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1227 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1229 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1230 set_Load_volatility(load, volatility_is_volatile);
1233 set_store(load_mem);
1238 * Creates a strict Conv if neccessary.
1240 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1242 ir_mode *mode = get_irn_mode(node);
1244 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1246 if (!mode_is_float(mode))
1249 /* check if there is already a Conv */
1250 if (is_Conv(node)) {
1251 /* convert it into a strict Conv */
1252 set_Conv_strict(node, 1);
1256 /* otherwise create a new one */
1257 return new_d_strictConv(dbgi, node, mode);
1260 static ir_node *get_global_var_address(dbg_info *const dbgi,
1261 const declaration_t *const decl)
1263 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1265 ir_entity *const entity = decl->v.entity;
1266 switch ((storage_class_tag_t)decl->storage_class) {
1267 case STORAGE_CLASS_THREAD:
1268 case STORAGE_CLASS_THREAD_EXTERN:
1269 case STORAGE_CLASS_THREAD_STATIC: {
1270 ir_node *const no_mem = new_NoMem();
1271 ir_node *const tls = get_irg_tls(current_ir_graph);
1272 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1276 return create_symconst(dbgi, mode_P_data, entity);
1281 * Returns the correct base address depending on whether it is a parameter or a
1282 * normal local variable.
1284 static ir_node *get_local_frame(ir_entity *const ent)
1286 ir_graph *const irg = current_ir_graph;
1287 const ir_type *const owner = get_entity_owner(ent);
1288 if (owner == get_irg_frame_type(irg)) {
1289 return get_irg_frame(irg);
1291 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1292 return get_irg_value_param_base(irg);
1296 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1298 ir_mode *value_mode = get_irn_mode(value);
1300 if (value_mode == dest_mode || is_Bad(value))
1303 if(dest_mode == mode_b) {
1304 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1305 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1306 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1310 return new_d_Conv(dbgi, value, dest_mode);
1313 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1315 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1316 declaration_t *declaration = ref->declaration;
1317 type_t *type = skip_typeref(declaration->type);
1319 /* make sure the type is constructed */
1320 (void) get_ir_type(type);
1322 switch((declaration_kind_t) declaration->declaration_kind) {
1323 case DECLARATION_KIND_TYPE:
1324 case DECLARATION_KIND_UNKNOWN:
1327 case DECLARATION_KIND_ENUM_ENTRY: {
1328 ir_mode *const mode = get_ir_mode(type);
1329 return new_Const(mode, declaration->v.enum_val);
1332 case DECLARATION_KIND_LOCAL_VARIABLE: {
1333 ir_mode *const mode = get_ir_mode(type);
1334 return get_value(declaration->v.value_number, mode);
1336 case DECLARATION_KIND_FUNCTION: {
1337 ir_mode *const mode = get_ir_mode(type);
1338 return create_symconst(dbgi, mode, declaration->v.entity);
1340 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1341 ir_node *const addr = get_global_var_address(dbgi, declaration);
1342 return deref_address(dbgi, declaration->type, addr);
1345 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1346 ir_entity *entity = declaration->v.entity;
1347 ir_node *frame = get_local_frame(entity);
1348 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1349 return deref_address(dbgi, declaration->type, sel);
1352 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1353 return declaration->v.vla_base;
1355 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1356 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1357 case DECLARATION_KIND_COMPOUND_MEMBER:
1358 case DECLARATION_KIND_LABEL_BLOCK:
1359 panic("not implemented reference type");
1362 panic("reference to declaration with unknown type found");
1365 static ir_node *reference_addr(const reference_expression_t *ref)
1367 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1368 declaration_t *declaration = ref->declaration;
1370 switch((declaration_kind_t) declaration->declaration_kind) {
1371 case DECLARATION_KIND_TYPE:
1372 case DECLARATION_KIND_UNKNOWN:
1374 case DECLARATION_KIND_LOCAL_VARIABLE:
1375 /* you can store to a local variable (so we don't panic but return NULL
1376 * as an indicator for no real address) */
1378 case DECLARATION_KIND_FUNCTION: {
1379 type_t *const type = skip_typeref(ref->base.type);
1380 ir_mode *const mode = get_ir_mode(type);
1381 return create_symconst(dbgi, mode, declaration->v.entity);
1383 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1384 ir_node *const addr = get_global_var_address(dbgi, declaration);
1387 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1388 ir_entity *entity = declaration->v.entity;
1389 ir_node *frame = get_local_frame(entity);
1390 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1395 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1396 return declaration->v.vla_base;
1398 case DECLARATION_KIND_ENUM_ENTRY:
1399 panic("trying to reference enum entry");
1401 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1402 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1403 case DECLARATION_KIND_COMPOUND_MEMBER:
1404 case DECLARATION_KIND_LABEL_BLOCK:
1405 panic("not implemented reference type");
1408 panic("reference to declaration with unknown type found");
1412 * Transform calls to builtin functions.
1414 static ir_node *process_builtin_call(const call_expression_t *call)
1416 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1418 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1419 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1421 type_t *type = skip_typeref(builtin->base.type);
1422 assert(is_type_pointer(type));
1424 type_t *function_type = skip_typeref(type->pointer.points_to);
1425 symbol_t *symbol = builtin->symbol;
1427 switch(symbol->ID) {
1428 case T___builtin_alloca: {
1429 if(call->arguments == NULL || call->arguments->next != NULL) {
1430 panic("invalid number of parameters on __builtin_alloca");
1432 expression_t *argument = call->arguments->expression;
1433 ir_node *size = expression_to_firm(argument);
1435 ir_node *store = get_store();
1436 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1438 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1440 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1444 case T___builtin_huge_val: {
1445 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1446 tarval *tv = get_mode_infinite(mode);
1447 ir_node *res = new_d_Const(dbgi, mode, tv);
1450 case T___builtin_nan:
1451 case T___builtin_nanf:
1452 case T___builtin_nand: {
1453 /* Ignore string for now... */
1454 assert(is_type_function(function_type));
1455 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1456 tarval *tv = get_mode_NAN(mode);
1457 ir_node *res = new_d_Const(dbgi, mode, tv);
1460 case T___builtin_va_end:
1463 panic("Unsupported builtin found\n");
1468 * Transform a call expression.
1469 * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs.
1470 * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of
1471 * 256 MB if alloca is not handled right...
1473 static ir_node *call_expression_to_firm(const call_expression_t *call)
1475 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1476 assert(get_cur_block() != NULL);
1478 expression_t *function = call->function;
1479 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1480 return process_builtin_call(call);
1482 if(function->kind == EXPR_REFERENCE) {
1483 const reference_expression_t *ref = &function->reference;
1484 declaration_t *declaration = ref->declaration;
1486 if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1487 if (declaration->v.entity == rts_entities[rts_alloca]) {
1488 /* handle alloca() call */
1489 expression_t *argument = call->arguments->expression;
1490 ir_node *size = expression_to_firm(argument);
1492 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1494 ir_node *store = get_store();
1495 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1496 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1498 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1500 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1506 ir_node *callee = expression_to_firm(function);
1508 type_t *type = skip_typeref(function->base.type);
1509 assert(is_type_pointer(type));
1510 pointer_type_t *pointer_type = &type->pointer;
1511 type_t *points_to = skip_typeref(pointer_type->points_to);
1512 assert(is_type_function(points_to));
1513 function_type_t *function_type = &points_to->function;
1515 int n_parameters = 0;
1516 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1517 ir_type *new_method_type = NULL;
1518 if(function_type->variadic || function_type->unspecified_parameters) {
1519 const call_argument_t *argument = call->arguments;
1520 for( ; argument != NULL; argument = argument->next) {
1524 /* we need to construct a new method type matching the call
1526 int n_res = get_method_n_ress(ir_method_type);
1527 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1528 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1529 n_parameters, n_res, dbgi);
1530 set_method_calling_convention(new_method_type,
1531 get_method_calling_convention(ir_method_type));
1532 set_method_additional_properties(new_method_type,
1533 get_method_additional_properties(ir_method_type));
1534 set_method_variadicity(new_method_type,
1535 get_method_variadicity(ir_method_type));
1537 for(int i = 0; i < n_res; ++i) {
1538 set_method_res_type(new_method_type, i,
1539 get_method_res_type(ir_method_type, i));
1541 argument = call->arguments;
1542 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1543 expression_t *expression = argument->expression;
1544 ir_type *irtype = get_ir_type(expression->base.type);
1545 set_method_param_type(new_method_type, i, irtype);
1547 ir_method_type = new_method_type;
1549 n_parameters = get_method_n_params(ir_method_type);
1552 ir_node *in[n_parameters];
1554 const call_argument_t *argument = call->arguments;
1555 for(int n = 0; n < n_parameters; ++n) {
1556 expression_t *expression = argument->expression;
1557 ir_node *arg_node = expression_to_firm(expression);
1559 arg_node = do_strict_conv(dbgi, arg_node);
1563 argument = argument->next;
1566 ir_node *store = get_store();
1567 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1569 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1572 type_t *return_type = skip_typeref(function_type->return_type);
1573 ir_node *result = NULL;
1575 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1577 if(is_type_scalar(return_type)) {
1578 mode = get_ir_mode(return_type);
1582 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1583 result = new_d_Proj(dbgi, resproj, mode, 0);
1589 static void statement_to_firm(statement_t *statement);
1590 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1592 static ir_node *expression_to_addr(const expression_t *expression);
1593 static void create_condition_evaluation(const expression_t *expression,
1594 ir_node *true_block,
1595 ir_node *false_block);
1597 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1600 value = do_strict_conv(dbgi, value);
1602 ir_node *memory = get_store();
1604 if(is_type_scalar(type)) {
1605 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1606 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1607 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1608 set_Store_volatility(store, volatility_is_volatile);
1609 set_store(store_mem);
1611 ir_type *irtype = get_ir_type(type);
1612 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1613 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1614 set_store(copyb_mem);
1618 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1620 tarval *all_one = get_mode_all_one(mode);
1621 int mode_size = get_mode_size_bits(mode);
1623 assert(offset >= 0 && size >= 0);
1624 assert(offset + size <= mode_size);
1625 if(size == mode_size) {
1629 long shiftr = get_mode_size_bits(mode) - size;
1630 long shiftl = offset;
1631 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1632 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1633 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1634 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1639 static void bitfield_store_to_firm(const select_expression_t *expression,
1640 ir_node *addr, ir_node *value)
1642 type_t *type = expression->base.type;
1643 ir_mode *mode = get_ir_mode(type);
1645 assert(get_irn_mode(value) == mode || is_Bad(value));
1647 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1649 /* kill upper bits of value and shift to right position */
1650 ir_entity *entity = expression->compound_entry->v.entity;
1651 int bitoffset = get_entity_offset_bits_remainder(entity);
1652 ir_type *entity_type = get_entity_type(entity);
1653 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1655 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1656 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1657 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1658 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1659 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1660 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1662 /* load current value */
1663 ir_node *mem = get_store();
1664 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1665 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1666 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1667 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1668 tarval *inv_mask = tarval_not(shift_mask);
1669 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1670 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1672 /* construct new value and store */
1673 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1674 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1675 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1676 set_store(store_mem);
1678 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1679 set_Load_volatility(load, volatility_is_volatile);
1680 set_Store_volatility(store, volatility_is_volatile);
1684 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1687 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1688 type_t *type = expression->base.type;
1689 ir_mode *mode = get_ir_mode(type);
1690 ir_node *mem = get_store();
1691 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1692 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1693 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1695 load_res = create_conv(dbgi, load_res, mode_int);
1697 set_store(load_mem);
1699 /* kill upper bits */
1700 ir_entity *entity = expression->compound_entry->v.entity;
1701 int bitoffset = get_entity_offset_bits_remainder(entity);
1702 ir_type *entity_type = get_entity_type(entity);
1703 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1704 long shift_bitsl = machine_size - bitoffset - bitsize;
1705 assert(shift_bitsl >= 0);
1706 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1707 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1708 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1710 long shift_bitsr = bitoffset + shift_bitsl;
1711 assert(shift_bitsr <= (long) machine_size);
1712 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1713 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1715 if(mode_is_signed(mode)) {
1716 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1718 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1721 return create_conv(dbgi, shiftr, mode);
1724 static void set_value_for_expression_addr(const expression_t *expression,
1725 ir_node *value, ir_node *addr)
1727 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1728 value = do_strict_conv(dbgi, value);
1730 if (expression->kind == EXPR_REFERENCE) {
1731 const reference_expression_t *ref = &expression->reference;
1733 declaration_t *declaration = ref->declaration;
1734 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1735 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1736 set_value(declaration->v.value_number, value);
1742 addr = expression_to_addr(expression);
1744 type_t *type = skip_typeref(expression->base.type);
1746 if (expression->kind == EXPR_SELECT) {
1747 const select_expression_t *select = &expression->select;
1749 declaration_t *declaration = select->compound_entry;
1750 if (declaration->type->kind == TYPE_BITFIELD) {
1751 bitfield_store_to_firm(select, addr, value);
1756 assign_value(dbgi, addr, type, value);
1759 static void set_value_for_expression(const expression_t *expression,
1762 set_value_for_expression_addr(expression, value, NULL);
1765 static ir_node *get_value_from_lvalue(const expression_t *expression,
1768 if (expression->kind == EXPR_REFERENCE) {
1769 const reference_expression_t *ref = &expression->reference;
1771 declaration_t *declaration = ref->declaration;
1772 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1773 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1774 assert(addr == NULL);
1775 ir_mode *mode = get_ir_mode(expression->base.type);
1776 return get_value(declaration->v.value_number, mode);
1780 assert(addr != NULL);
1781 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1784 if (expression->kind == EXPR_SELECT &&
1785 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1786 value = bitfield_extract_to_firm(&expression->select, addr);
1788 value = deref_address(dbgi, expression->base.type, addr);
1795 static ir_node *create_incdec(const unary_expression_t *expression)
1797 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1798 const expression_t *value_expr = expression->value;
1799 ir_node *addr = expression_to_addr(value_expr);
1800 ir_node *value = get_value_from_lvalue(value_expr, addr);
1802 type_t *type = skip_typeref(expression->base.type);
1803 ir_mode *mode = get_ir_mode(expression->base.type);
1806 if(is_type_pointer(type)) {
1807 pointer_type_t *pointer_type = &type->pointer;
1808 offset = get_type_size(pointer_type->points_to);
1810 assert(is_type_arithmetic(type));
1811 offset = new_Const(mode, get_mode_one(mode));
1815 ir_node *store_value;
1816 switch(expression->base.kind) {
1817 case EXPR_UNARY_POSTFIX_INCREMENT:
1819 store_value = new_d_Add(dbgi, value, offset, mode);
1821 case EXPR_UNARY_POSTFIX_DECREMENT:
1823 store_value = new_d_Sub(dbgi, value, offset, mode);
1825 case EXPR_UNARY_PREFIX_INCREMENT:
1826 result = new_d_Add(dbgi, value, offset, mode);
1827 store_value = result;
1829 case EXPR_UNARY_PREFIX_DECREMENT:
1830 result = new_d_Sub(dbgi, value, offset, mode);
1831 store_value = result;
1834 panic("no incdec expr in create_incdec");
1837 set_value_for_expression_addr(value_expr, store_value, addr);
1842 static bool is_local_variable(expression_t *expression)
1844 if (expression->kind != EXPR_REFERENCE)
1846 reference_expression_t *ref_expr = &expression->reference;
1847 declaration_t *declaration = ref_expr->declaration;
1848 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1851 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1854 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1855 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1856 case EXPR_BINARY_NOTEQUAL:
1857 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1858 case EXPR_BINARY_ISLESS:
1859 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1860 case EXPR_BINARY_ISLESSEQUAL:
1861 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1862 case EXPR_BINARY_ISGREATER:
1863 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1864 case EXPR_BINARY_ISGREATEREQUAL:
1865 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1866 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1871 panic("trying to get pn_Cmp from non-comparison binexpr type");
1875 * Handle the assume optimizer hint: check if a Confirm
1876 * node can be created.
1878 * @param dbi debug info
1879 * @param expr the IL assume expression
1881 * we support here only some simple cases:
1886 static ir_node *handle_assume_compare(dbg_info *dbi,
1887 const binary_expression_t *expression)
1889 expression_t *op1 = expression->left;
1890 expression_t *op2 = expression->right;
1891 declaration_t *var2, *var = NULL;
1892 ir_node *res = NULL;
1895 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1897 if (is_local_variable(op1) && is_local_variable(op2)) {
1898 var = op1->reference.declaration;
1899 var2 = op2->reference.declaration;
1901 type_t *const type = skip_typeref(var->type);
1902 ir_mode *const mode = get_ir_mode(type);
1904 ir_node *const irn1 = get_value(var->v.value_number, mode);
1905 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1907 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1908 set_value(var2->v.value_number, res);
1910 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1911 set_value(var->v.value_number, res);
1917 if (is_local_variable(op1) && is_constant_expression(op2)) {
1918 var = op1->reference.declaration;
1920 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1921 cmp_val = get_inversed_pnc(cmp_val);
1922 var = op2->reference.declaration;
1927 type_t *const type = skip_typeref(var->type);
1928 ir_mode *const mode = get_ir_mode(type);
1930 res = get_value(var->v.value_number, mode);
1931 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1932 set_value(var->v.value_number, res);
1938 * Handle the assume optimizer hint.
1940 * @param dbi debug info
1941 * @param expr the IL assume expression
1943 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1944 switch(expression->kind) {
1945 case EXPR_BINARY_EQUAL:
1946 case EXPR_BINARY_NOTEQUAL:
1947 case EXPR_BINARY_LESS:
1948 case EXPR_BINARY_LESSEQUAL:
1949 case EXPR_BINARY_GREATER:
1950 case EXPR_BINARY_GREATEREQUAL:
1951 return handle_assume_compare(dbi, &expression->binary);
1957 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1959 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1960 type_t *type = skip_typeref(expression->base.type);
1962 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1963 return expression_to_addr(expression->value);
1965 const expression_t *value = expression->value;
1967 switch(expression->base.kind) {
1968 case EXPR_UNARY_NEGATE: {
1969 ir_node *value_node = expression_to_firm(value);
1970 ir_mode *mode = get_ir_mode(type);
1971 return new_d_Minus(dbgi, value_node, mode);
1973 case EXPR_UNARY_PLUS:
1974 return expression_to_firm(value);
1975 case EXPR_UNARY_BITWISE_NEGATE: {
1976 ir_node *value_node = expression_to_firm(value);
1977 ir_mode *mode = get_ir_mode(type);
1978 return new_d_Not(dbgi, value_node, mode);
1980 case EXPR_UNARY_NOT: {
1981 ir_node *value_node = _expression_to_firm(value);
1982 value_node = create_conv(dbgi, value_node, mode_b);
1983 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
1986 case EXPR_UNARY_DEREFERENCE: {
1987 ir_node *value_node = expression_to_firm(value);
1988 type_t *value_type = skip_typeref(value->base.type);
1989 assert(is_type_pointer(value_type));
1990 type_t *points_to = value_type->pointer.points_to;
1991 return deref_address(dbgi, points_to, value_node);
1993 case EXPR_UNARY_POSTFIX_INCREMENT:
1994 case EXPR_UNARY_POSTFIX_DECREMENT:
1995 case EXPR_UNARY_PREFIX_INCREMENT:
1996 case EXPR_UNARY_PREFIX_DECREMENT:
1997 return create_incdec(expression);
1998 case EXPR_UNARY_CAST: {
1999 ir_node *value_node = expression_to_firm(value);
2000 if(is_type_scalar(type)) {
2001 ir_mode *mode = get_ir_mode(type);
2002 ir_node *node = create_conv(dbgi, value_node, mode);
2003 node = do_strict_conv(dbgi, node);
2006 /* make sure firm type is constructed */
2007 (void) get_ir_type(type);
2011 case EXPR_UNARY_CAST_IMPLICIT: {
2012 ir_node *value_node = expression_to_firm(value);
2013 if(is_type_scalar(type)) {
2014 ir_mode *mode = get_ir_mode(type);
2015 return create_conv(dbgi, value_node, mode);
2020 case EXPR_UNARY_ASSUME:
2021 if(firm_opt.confirm)
2022 return handle_assume(dbgi, value);
2029 panic("invalid UNEXPR type found");
2033 * produces a 0/1 depending of the value of a mode_b node
2035 static ir_node *produce_condition_result(const expression_t *expression,
2038 ir_mode *mode = get_ir_mode(expression->base.type);
2039 ir_node *cur_block = get_cur_block();
2041 ir_node *one_block = new_immBlock();
2042 ir_node *one = new_Const(mode, get_mode_one(mode));
2043 ir_node *jmp_one = new_d_Jmp(dbgi);
2045 ir_node *zero_block = new_immBlock();
2046 ir_node *zero = new_Const(mode, get_mode_null(mode));
2047 ir_node *jmp_zero = new_d_Jmp(dbgi);
2049 set_cur_block(cur_block);
2050 create_condition_evaluation(expression, one_block, zero_block);
2051 mature_immBlock(one_block);
2052 mature_immBlock(zero_block);
2054 ir_node *common_block = new_immBlock();
2055 add_immBlock_pred(common_block, jmp_one);
2056 add_immBlock_pred(common_block, jmp_zero);
2057 mature_immBlock(common_block);
2059 ir_node *in[2] = { one, zero };
2060 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2065 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2066 ir_node *value, type_t *type)
2068 pointer_type_t *const pointer_type = &type->pointer;
2069 type_t *const points_to = pointer_type->points_to;
2070 const unsigned elem_size = get_type_size_const(points_to);
2072 assert(elem_size >= 1);
2076 value = create_conv(dbgi, value, mode_int);
2077 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2078 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2082 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2083 ir_node *left, ir_node *right)
2086 type_t *type_left = skip_typeref(expression->left->base.type);
2087 type_t *type_right = skip_typeref(expression->right->base.type);
2089 expression_kind_t kind = expression->base.kind;
2092 case EXPR_BINARY_SHIFTLEFT:
2093 case EXPR_BINARY_SHIFTRIGHT:
2094 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2095 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2096 mode = get_irn_mode(left);
2097 right = create_conv(dbgi, right, mode_uint);
2100 case EXPR_BINARY_SUB:
2101 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2102 const pointer_type_t *const ptr_type = &type_left->pointer;
2104 mode = get_ir_mode(expression->base.type);
2105 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2106 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2107 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2108 ir_node *const no_mem = new_NoMem();
2109 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2110 mode, op_pin_state_floats);
2111 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2114 case EXPR_BINARY_SUB_ASSIGN:
2115 if (is_type_pointer(type_left)) {
2116 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2117 mode = get_ir_mode(type_left);
2122 case EXPR_BINARY_ADD:
2123 case EXPR_BINARY_ADD_ASSIGN:
2124 if (is_type_pointer(type_left)) {
2125 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2126 mode = get_ir_mode(type_left);
2128 } else if (is_type_pointer(type_right)) {
2129 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2130 mode = get_ir_mode(type_right);
2137 mode = get_irn_mode(right);
2138 left = create_conv(dbgi, left, mode);
2143 case EXPR_BINARY_ADD_ASSIGN:
2144 case EXPR_BINARY_ADD:
2145 return new_d_Add(dbgi, left, right, mode);
2146 case EXPR_BINARY_SUB_ASSIGN:
2147 case EXPR_BINARY_SUB:
2148 return new_d_Sub(dbgi, left, right, mode);
2149 case EXPR_BINARY_MUL_ASSIGN:
2150 case EXPR_BINARY_MUL:
2151 return new_d_Mul(dbgi, left, right, mode);
2152 case EXPR_BINARY_BITWISE_AND:
2153 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2154 return new_d_And(dbgi, left, right, mode);
2155 case EXPR_BINARY_BITWISE_OR:
2156 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2157 return new_d_Or(dbgi, left, right, mode);
2158 case EXPR_BINARY_BITWISE_XOR:
2159 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2160 return new_d_Eor(dbgi, left, right, mode);
2161 case EXPR_BINARY_SHIFTLEFT:
2162 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2163 return new_d_Shl(dbgi, left, right, mode);
2164 case EXPR_BINARY_SHIFTRIGHT:
2165 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2166 if (mode_is_signed(mode)) {
2167 return new_d_Shrs(dbgi, left, right, mode);
2169 return new_d_Shr(dbgi, left, right, mode);
2171 case EXPR_BINARY_DIV:
2172 case EXPR_BINARY_DIV_ASSIGN: {
2173 ir_node *pin = new_Pin(new_NoMem());
2176 if(mode_is_float(mode)) {
2177 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2178 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2180 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2181 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2185 case EXPR_BINARY_MOD:
2186 case EXPR_BINARY_MOD_ASSIGN: {
2187 ir_node *pin = new_Pin(new_NoMem());
2188 assert(!mode_is_float(mode));
2189 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2190 op_pin_state_floats);
2191 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2195 panic("unexpected expression kind");
2199 static ir_node *create_lazy_op(const binary_expression_t *expression)
2201 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2202 type_t *type = expression->base.type;
2203 ir_mode *mode = get_ir_mode(type);
2205 if(is_constant_expression(expression->left)) {
2206 long val = fold_constant(expression->left);
2207 expression_kind_t ekind = expression->base.kind;
2208 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2209 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2210 return expression_to_firm(expression->right);
2212 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2213 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2214 return new_Const(mode, get_mode_one(mode));
2218 return produce_condition_result((const expression_t*) expression, dbgi);
2221 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2222 ir_node *right, ir_mode *mode);
2224 static ir_node *create_assign_binop(const binary_expression_t *expression)
2226 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2227 const expression_t *left_expr = expression->left;
2228 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2229 ir_node *left_addr = expression_to_addr(left_expr);
2230 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2231 ir_node *right = expression_to_firm(expression->right);
2232 ir_node *result = create_op(dbgi, expression, left, right);
2234 result = create_conv(dbgi, result, left_mode);
2235 result = do_strict_conv(dbgi, result);
2237 set_value_for_expression_addr(left_expr, result, left_addr);
2242 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2244 expression_kind_t kind = expression->base.kind;
2247 case EXPR_BINARY_EQUAL:
2248 case EXPR_BINARY_NOTEQUAL:
2249 case EXPR_BINARY_LESS:
2250 case EXPR_BINARY_LESSEQUAL:
2251 case EXPR_BINARY_GREATER:
2252 case EXPR_BINARY_GREATEREQUAL:
2253 case EXPR_BINARY_ISGREATER:
2254 case EXPR_BINARY_ISGREATEREQUAL:
2255 case EXPR_BINARY_ISLESS:
2256 case EXPR_BINARY_ISLESSEQUAL:
2257 case EXPR_BINARY_ISLESSGREATER:
2258 case EXPR_BINARY_ISUNORDERED: {
2259 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2260 ir_node *left = expression_to_firm(expression->left);
2261 ir_node *right = expression_to_firm(expression->right);
2262 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2263 long pnc = get_pnc(kind, expression->left->base.type);
2264 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2267 case EXPR_BINARY_ASSIGN: {
2268 ir_node *addr = expression_to_addr(expression->left);
2269 ir_node *right = expression_to_firm(expression->right);
2270 set_value_for_expression_addr(expression->left, right, addr);
2274 case EXPR_BINARY_ADD:
2275 case EXPR_BINARY_SUB:
2276 case EXPR_BINARY_MUL:
2277 case EXPR_BINARY_DIV:
2278 case EXPR_BINARY_MOD:
2279 case EXPR_BINARY_BITWISE_AND:
2280 case EXPR_BINARY_BITWISE_OR:
2281 case EXPR_BINARY_BITWISE_XOR:
2282 case EXPR_BINARY_SHIFTLEFT:
2283 case EXPR_BINARY_SHIFTRIGHT:
2285 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2286 ir_node *left = expression_to_firm(expression->left);
2287 ir_node *right = expression_to_firm(expression->right);
2288 return create_op(dbgi, expression, left, right);
2290 case EXPR_BINARY_LOGICAL_AND:
2291 case EXPR_BINARY_LOGICAL_OR:
2292 return create_lazy_op(expression);
2293 case EXPR_BINARY_COMMA:
2294 /* create side effects of left side */
2295 (void) expression_to_firm(expression->left);
2296 return _expression_to_firm(expression->right);
2298 case EXPR_BINARY_ADD_ASSIGN:
2299 case EXPR_BINARY_SUB_ASSIGN:
2300 case EXPR_BINARY_MUL_ASSIGN:
2301 case EXPR_BINARY_MOD_ASSIGN:
2302 case EXPR_BINARY_DIV_ASSIGN:
2303 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2304 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2305 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2306 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2307 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2308 return create_assign_binop(expression);
2309 case EXPR_BINARY_BUILTIN_EXPECT:
2310 return _expression_to_firm(expression->left);
2312 panic("TODO binexpr type");
2316 static ir_node *array_access_addr(const array_access_expression_t *expression)
2318 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2319 ir_node *base_addr = expression_to_firm(expression->array_ref);
2320 ir_node *offset = expression_to_firm(expression->index);
2322 type_t *offset_type = skip_typeref(expression->index->base.type);
2324 if (is_type_signed(offset_type)) {
2325 mode = get_ir_mode(type_ssize_t);
2327 mode = get_ir_mode(type_size_t);
2329 offset = create_conv(dbgi, offset, mode);
2331 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2332 assert(is_type_pointer(ref_type));
2333 pointer_type_t *pointer_type = &ref_type->pointer;
2335 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2336 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2337 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2339 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2344 static ir_node *array_access_to_firm(
2345 const array_access_expression_t *expression)
2347 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2348 ir_node *addr = array_access_addr(expression);
2349 type_t *type = revert_automatic_type_conversion(
2350 (const expression_t*) expression);
2351 type = skip_typeref(type);
2353 return deref_address(dbgi, type, addr);
2356 static long get_offsetof_offset(const offsetof_expression_t *expression)
2358 type_t *orig_type = expression->type;
2361 designator_t *designator = expression->designator;
2362 for( ; designator != NULL; designator = designator->next) {
2363 type_t *type = skip_typeref(orig_type);
2364 /* be sure the type is constructed */
2365 (void) get_ir_type(type);
2367 if(designator->symbol != NULL) {
2368 assert(is_type_compound(type));
2369 symbol_t *symbol = designator->symbol;
2371 declaration_t *declaration = type->compound.declaration;
2372 declaration_t *iter = declaration->scope.declarations;
2373 for( ; iter != NULL; iter = iter->next) {
2374 if(iter->symbol == symbol) {
2378 assert(iter != NULL);
2380 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2381 offset += get_entity_offset(iter->v.entity);
2383 orig_type = iter->type;
2385 expression_t *array_index = designator->array_index;
2386 assert(designator->array_index != NULL);
2387 assert(is_type_array(type));
2388 assert(is_type_valid(array_index->base.type));
2390 long index = fold_constant(array_index);
2391 ir_type *arr_type = get_ir_type(type);
2392 ir_type *elem_type = get_array_element_type(arr_type);
2393 long elem_size = get_type_size_bytes(elem_type);
2395 offset += index * elem_size;
2397 orig_type = type->array.element_type;
2404 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2406 ir_mode *mode = get_ir_mode(expression->base.type);
2407 long offset = get_offsetof_offset(expression);
2408 tarval *tv = new_tarval_from_long(offset, mode);
2409 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2411 return new_d_Const(dbgi, mode, tv);
2414 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2415 ir_entity *entity, type_t *type);
2417 static ir_node *compound_literal_to_firm(
2418 const compound_literal_expression_t *expression)
2420 type_t *type = expression->type;
2422 /* create an entity on the stack */
2423 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2425 ident *const id = id_unique("CompLit.%u");
2426 ir_type *const irtype = get_ir_type(type);
2427 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2428 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2429 set_entity_ld_ident(entity, id);
2431 set_entity_variability(entity, variability_uninitialized);
2433 /* create initialisation code */
2434 initializer_t *initializer = expression->initializer;
2435 create_local_initializer(initializer, dbgi, entity, type);
2437 /* create a sel for the compound literal address */
2438 ir_node *frame = get_local_frame(entity);
2439 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2444 * Transform a sizeof expression into Firm code.
2446 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2448 type_t *type = expression->type;
2450 type = expression->tp_expression->base.type;
2451 assert(type != NULL);
2454 type = skip_typeref(type);
2455 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2456 if(is_type_array(type) && type->array.is_vla
2457 && expression->tp_expression != NULL) {
2458 expression_to_firm(expression->tp_expression);
2461 return get_type_size(type);
2465 * Transform an alignof expression into Firm code.
2467 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2469 type_t *type = expression->type;
2471 /* beware: if expression is a variable reference, return the
2472 alignment of the variable. */
2473 const expression_t *tp_expression = expression->tp_expression;
2474 const declaration_t *declaration = expr_is_variable(tp_expression);
2475 if (declaration != NULL) {
2476 /* TODO: get the alignment of this variable. */
2478 type = tp_expression->base.type;
2479 assert(type != NULL);
2482 ir_mode *const mode = get_ir_mode(expression->base.type);
2483 symconst_symbol sym;
2484 sym.type_p = get_ir_type(type);
2485 return new_SymConst(mode, sym, symconst_type_align);
2488 static bool constant_folding;
2490 static void init_ir_types(void);
2491 long fold_constant(const expression_t *expression)
2493 bool constant_folding_old = constant_folding;
2494 constant_folding = true;
2498 assert(is_constant_expression(expression));
2500 ir_graph *old_current_ir_graph = current_ir_graph;
2501 if(current_ir_graph == NULL) {
2502 current_ir_graph = get_const_code_irg();
2505 ir_node *cnst = expression_to_firm(expression);
2506 current_ir_graph = old_current_ir_graph;
2508 if(!is_Const(cnst)) {
2509 panic("couldn't fold constant\n");
2512 tarval *tv = get_Const_tarval(cnst);
2513 if(!tarval_is_long(tv)) {
2514 panic("result of constant folding is not integer\n");
2517 constant_folding = constant_folding_old;
2519 return get_tarval_long(tv);
2522 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2524 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2526 /* first try to fold a constant condition */
2527 if(is_constant_expression(expression->condition)) {
2528 long val = fold_constant(expression->condition);
2530 return expression_to_firm(expression->true_expression);
2532 return expression_to_firm(expression->false_expression);
2536 ir_node *cur_block = get_cur_block();
2538 /* create the true block */
2539 ir_node *true_block = new_immBlock();
2541 ir_node *true_val = expression_to_firm(expression->true_expression);
2542 ir_node *true_jmp = new_Jmp();
2544 /* create the false block */
2545 ir_node *false_block = new_immBlock();
2547 ir_node *false_val = expression_to_firm(expression->false_expression);
2548 ir_node *false_jmp = new_Jmp();
2550 /* create the condition evaluation */
2551 set_cur_block(cur_block);
2552 create_condition_evaluation(expression->condition, true_block, false_block);
2553 mature_immBlock(true_block);
2554 mature_immBlock(false_block);
2556 /* create the common block */
2557 ir_node *common_block = new_immBlock();
2558 add_immBlock_pred(common_block, true_jmp);
2559 add_immBlock_pred(common_block, false_jmp);
2560 mature_immBlock(common_block);
2562 /* TODO improve static semantics, so either both or no values are NULL */
2563 if (true_val == NULL || false_val == NULL)
2566 ir_node *in[2] = { true_val, false_val };
2567 ir_mode *mode = get_irn_mode(true_val);
2568 assert(get_irn_mode(false_val) == mode);
2569 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2575 * Returns an IR-node representing the address of a field.
2577 static ir_node *select_addr(const select_expression_t *expression)
2579 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2581 ir_node *compound_addr = expression_to_firm(expression->compound);
2583 /* make sure the type is constructed */
2584 type_t *type = skip_typeref(expression->compound->base.type);
2585 if (is_type_pointer(type)) {
2586 type = type->pointer.points_to;
2588 (void) get_ir_type(type);
2590 declaration_t *entry = expression->compound_entry;
2591 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2592 ir_entity *entity = entry->v.entity;
2594 assert(entity != NULL);
2596 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2601 static ir_node *select_to_firm(const select_expression_t *expression)
2603 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2604 ir_node *addr = select_addr(expression);
2605 type_t *type = revert_automatic_type_conversion(
2606 (const expression_t*) expression);
2607 type = skip_typeref(type);
2609 declaration_t *entry = expression->compound_entry;
2610 type_t *entry_type = skip_typeref(entry->type);
2612 if (entry_type->kind == TYPE_BITFIELD) {
2613 return bitfield_extract_to_firm(expression, addr);
2616 return deref_address(dbgi, type, addr);
2619 /* Values returned by __builtin_classify_type. */
2620 typedef enum gcc_type_class
2626 enumeral_type_class,
2629 reference_type_class,
2633 function_type_class,
2644 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2646 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2652 const atomic_type_t *const atomic_type = &type->atomic;
2653 switch (atomic_type->akind) {
2654 /* should not be reached */
2655 case ATOMIC_TYPE_INVALID:
2659 /* gcc cannot do that */
2660 case ATOMIC_TYPE_VOID:
2661 tc = void_type_class;
2664 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2665 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2666 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2667 case ATOMIC_TYPE_SHORT:
2668 case ATOMIC_TYPE_USHORT:
2669 case ATOMIC_TYPE_INT:
2670 case ATOMIC_TYPE_UINT:
2671 case ATOMIC_TYPE_LONG:
2672 case ATOMIC_TYPE_ULONG:
2673 case ATOMIC_TYPE_LONGLONG:
2674 case ATOMIC_TYPE_ULONGLONG:
2675 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2676 tc = integer_type_class;
2679 case ATOMIC_TYPE_FLOAT:
2680 case ATOMIC_TYPE_DOUBLE:
2681 case ATOMIC_TYPE_LONG_DOUBLE:
2682 tc = real_type_class;
2685 panic("Unexpected atomic type in classify_type_to_firm().");
2688 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2689 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2690 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2691 case TYPE_ARRAY: /* gcc handles this as pointer */
2692 case TYPE_FUNCTION: /* gcc handles this as pointer */
2693 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2694 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2695 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2697 /* gcc handles this as integer */
2698 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2701 /* typedef/typeof should be skipped already */
2708 panic("unexpected TYPE classify_type_to_firm().");
2711 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2712 ir_mode *const mode = mode_int;
2713 tarval *const tv = new_tarval_from_long(tc, mode);
2714 return new_d_Const(dbgi, mode, tv);
2717 static ir_node *function_name_to_firm(
2718 const funcname_expression_t *const expr)
2720 switch(expr->kind) {
2721 case FUNCNAME_FUNCTION:
2722 case FUNCNAME_PRETTY_FUNCTION:
2723 case FUNCNAME_FUNCDNAME:
2724 if (current_function_name == NULL) {
2725 const source_position_t *const src_pos = &expr->base.source_position;
2726 const char *const name = current_function_decl->symbol->string;
2727 const string_t string = { name, strlen(name) + 1 };
2728 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2730 return current_function_name;
2731 case FUNCNAME_FUNCSIG:
2732 if (current_funcsig == NULL) {
2733 const source_position_t *const src_pos = &expr->base.source_position;
2734 ir_entity *ent = get_irg_entity(current_ir_graph);
2735 const char *const name = get_entity_ld_name(ent);
2736 const string_t string = { name, strlen(name) + 1 };
2737 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2739 return current_funcsig;
2741 panic("Unsupported function name");
2744 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2746 statement_t *statement = expr->statement;
2748 assert(statement->kind == STATEMENT_COMPOUND);
2749 return compound_statement_to_firm(&statement->compound);
2752 static ir_node *va_start_expression_to_firm(
2753 const va_start_expression_t *const expr)
2755 ir_type *const method_type = get_ir_type(current_function_decl->type);
2756 int const n = get_method_n_params(method_type) - 1;
2757 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2758 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2759 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2760 ir_node *const no_mem = new_NoMem();
2761 ir_node *const arg_sel =
2762 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2764 ir_node *const cnst = get_type_size(expr->parameter->type);
2765 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2766 set_value_for_expression(expr->ap, add);
2771 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2773 type_t *const type = expr->base.type;
2774 expression_t *const ap_expr = expr->ap;
2775 ir_node *const ap_addr = expression_to_addr(ap_expr);
2776 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2777 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2778 ir_node *const res = deref_address(dbgi, type, ap);
2780 ir_node *const cnst = get_type_size(expr->base.type);
2781 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2783 set_value_for_expression_addr(ap_expr, add, ap_addr);
2788 static ir_node *dereference_addr(const unary_expression_t *const expression)
2790 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2791 return expression_to_firm(expression->value);
2795 * Returns a IR-node representing an lvalue of the given expression.
2797 static ir_node *expression_to_addr(const expression_t *expression)
2799 switch(expression->kind) {
2800 case EXPR_REFERENCE:
2801 return reference_addr(&expression->reference);
2802 case EXPR_ARRAY_ACCESS:
2803 return array_access_addr(&expression->array_access);
2805 return select_addr(&expression->select);
2807 return call_expression_to_firm(&expression->call);
2808 case EXPR_UNARY_DEREFERENCE: {
2809 return dereference_addr(&expression->unary);
2814 panic("trying to get address of non-lvalue");
2817 static ir_node *builtin_constant_to_firm(
2818 const builtin_constant_expression_t *expression)
2820 ir_mode *mode = get_ir_mode(expression->base.type);
2823 if (is_constant_expression(expression->value)) {
2828 return new_Const_long(mode, v);
2831 static ir_node *builtin_prefetch_to_firm(
2832 const builtin_prefetch_expression_t *expression)
2834 ir_node *adr = expression_to_firm(expression->adr);
2835 /* no Firm support for prefetch yet */
2841 * creates firm nodes for an expression. The difference between this function
2842 * and expression_to_firm is, that this version might produce mode_b nodes
2843 * instead of mode_Is.
2845 static ir_node *_expression_to_firm(const expression_t *expression)
2848 if (!constant_folding) {
2849 assert(!expression->base.transformed);
2850 ((expression_t*) expression)->base.transformed = true;
2854 switch(expression->kind) {
2855 case EXPR_CHARACTER_CONSTANT:
2856 return character_constant_to_firm(&expression->conste);
2857 case EXPR_WIDE_CHARACTER_CONSTANT:
2858 return wide_character_constant_to_firm(&expression->conste);
2860 return const_to_firm(&expression->conste);
2861 case EXPR_STRING_LITERAL:
2862 return string_literal_to_firm(&expression->string);
2863 case EXPR_WIDE_STRING_LITERAL:
2864 return wide_string_literal_to_firm(&expression->wide_string);
2865 case EXPR_REFERENCE:
2866 return reference_expression_to_firm(&expression->reference);
2868 return call_expression_to_firm(&expression->call);
2870 return unary_expression_to_firm(&expression->unary);
2872 return binary_expression_to_firm(&expression->binary);
2873 case EXPR_ARRAY_ACCESS:
2874 return array_access_to_firm(&expression->array_access);
2876 return sizeof_to_firm(&expression->typeprop);
2878 return alignof_to_firm(&expression->typeprop);
2879 case EXPR_CONDITIONAL:
2880 return conditional_to_firm(&expression->conditional);
2882 return select_to_firm(&expression->select);
2883 case EXPR_CLASSIFY_TYPE:
2884 return classify_type_to_firm(&expression->classify_type);
2886 return function_name_to_firm(&expression->funcname);
2887 case EXPR_STATEMENT:
2888 return statement_expression_to_firm(&expression->statement);
2890 return va_start_expression_to_firm(&expression->va_starte);
2892 return va_arg_expression_to_firm(&expression->va_arge);
2893 case EXPR_BUILTIN_SYMBOL:
2894 panic("unimplemented expression found");
2895 case EXPR_BUILTIN_CONSTANT_P:
2896 return builtin_constant_to_firm(&expression->builtin_constant);
2897 case EXPR_BUILTIN_PREFETCH:
2898 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2900 return offsetof_to_firm(&expression->offsetofe);
2901 case EXPR_COMPOUND_LITERAL:
2902 return compound_literal_to_firm(&expression->compound_literal);
2908 panic("invalid expression found");
2911 static bool produces_mode_b(const expression_t *expression)
2913 switch (expression->kind) {
2914 case EXPR_BINARY_EQUAL:
2915 case EXPR_BINARY_NOTEQUAL:
2916 case EXPR_BINARY_LESS:
2917 case EXPR_BINARY_LESSEQUAL:
2918 case EXPR_BINARY_GREATER:
2919 case EXPR_BINARY_GREATEREQUAL:
2920 case EXPR_BINARY_ISGREATER:
2921 case EXPR_BINARY_ISGREATEREQUAL:
2922 case EXPR_BINARY_ISLESS:
2923 case EXPR_BINARY_ISLESSEQUAL:
2924 case EXPR_BINARY_ISLESSGREATER:
2925 case EXPR_BINARY_ISUNORDERED:
2926 case EXPR_UNARY_NOT:
2929 case EXPR_BINARY_BUILTIN_EXPECT:
2930 return produces_mode_b(expression->binary.left);
2931 case EXPR_BINARY_COMMA:
2932 return produces_mode_b(expression->binary.right);
2939 static ir_node *expression_to_firm(const expression_t *expression)
2941 if (!produces_mode_b(expression)) {
2942 ir_node *res = _expression_to_firm(expression);
2943 assert(res == NULL || get_irn_mode(res) != mode_b);
2947 if (is_constant_expression(expression)) {
2948 ir_node *res = _expression_to_firm(expression);
2949 ir_mode *mode = get_ir_mode(expression->base.type);
2950 assert(is_Const(res));
2951 if (is_Const_null(res)) {
2952 return new_Const_long(mode, 0);
2954 return new_Const_long(mode, 1);
2958 /* we have to produce a 0/1 from the mode_b expression */
2959 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2960 return produce_condition_result(expression, dbgi);
2963 static ir_node *expression_to_modeb(const expression_t *expression)
2965 ir_node *res = _expression_to_firm(expression);
2966 res = create_conv(NULL, res, mode_b);
2972 * create a short-circuit expression evaluation that tries to construct
2973 * efficient control flow structures for &&, || and ! expressions
2975 static void create_condition_evaluation(const expression_t *expression,
2976 ir_node *true_block,
2977 ir_node *false_block)
2979 switch(expression->kind) {
2980 case EXPR_UNARY_NOT: {
2981 const unary_expression_t *unary_expression = &expression->unary;
2982 create_condition_evaluation(unary_expression->value, false_block,
2986 case EXPR_BINARY_LOGICAL_AND: {
2987 const binary_expression_t *binary_expression = &expression->binary;
2989 ir_node *cur_block = get_cur_block();
2990 ir_node *extra_block = new_immBlock();
2991 set_cur_block(cur_block);
2992 create_condition_evaluation(binary_expression->left, extra_block,
2994 mature_immBlock(extra_block);
2995 set_cur_block(extra_block);
2996 create_condition_evaluation(binary_expression->right, true_block,
3000 case EXPR_BINARY_LOGICAL_OR: {
3001 const binary_expression_t *binary_expression = &expression->binary;
3003 ir_node *cur_block = get_cur_block();
3004 ir_node *extra_block = new_immBlock();
3005 set_cur_block(cur_block);
3006 create_condition_evaluation(binary_expression->left, true_block,
3008 mature_immBlock(extra_block);
3009 set_cur_block(extra_block);
3010 create_condition_evaluation(binary_expression->right, true_block,
3018 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3019 ir_node *condition = expression_to_modeb(expression);
3020 ir_node *cond = new_d_Cond(dbgi, condition);
3021 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3022 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3024 /* set branch prediction info based on __builtin_expect */
3025 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3026 long cnst = fold_constant(expression->binary.right);
3027 cond_jmp_predicate pred;
3030 pred = COND_JMP_PRED_FALSE;
3032 pred = COND_JMP_PRED_TRUE;
3034 set_Cond_jmp_pred(cond, pred);
3037 add_immBlock_pred(true_block, true_proj);
3038 add_immBlock_pred(false_block, false_proj);
3040 set_cur_block(NULL);
3045 static void create_declaration_entity(declaration_t *declaration,
3046 declaration_kind_t declaration_kind,
3047 ir_type *parent_type)
3049 type_t *const type = skip_typeref(declaration->type);
3050 if (is_type_function(type)) {
3051 (void) get_function_entity(declaration);
3055 ident *const id = new_id_from_str(declaration->symbol->string);
3056 ir_type *const irtype = get_ir_type(type);
3057 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3058 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3060 declaration->declaration_kind = (unsigned char) declaration_kind;
3061 declaration->v.entity = entity;
3062 set_entity_variability(entity, variability_uninitialized);
3063 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3064 if(parent_type == get_tls_type())
3065 set_entity_allocation(entity, allocation_automatic);
3066 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3067 set_entity_allocation(entity, allocation_static);
3069 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3070 set_entity_volatility(entity, volatility_is_volatile);
3075 typedef struct type_path_entry_t type_path_entry_t;
3076 struct type_path_entry_t {
3078 ir_initializer_t *initializer;
3080 declaration_t *compound_entry;
3083 typedef struct type_path_t type_path_t;
3084 struct type_path_t {
3085 type_path_entry_t *path;
3090 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3092 size_t len = ARR_LEN(path->path);
3094 for(size_t i = 0; i < len; ++i) {
3095 const type_path_entry_t *entry = & path->path[i];
3097 type_t *type = skip_typeref(entry->type);
3098 if(is_type_compound(type)) {
3099 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3100 } else if(is_type_array(type)) {
3101 fprintf(stderr, "[%zd]", entry->index);
3103 fprintf(stderr, "-INVALID-");
3106 fprintf(stderr, " (");
3107 print_type(path->top_type);
3108 fprintf(stderr, ")");
3111 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3113 size_t len = ARR_LEN(path->path);
3115 return & path->path[len-1];
3118 static type_path_entry_t *append_to_type_path(type_path_t *path)
3120 size_t len = ARR_LEN(path->path);
3121 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3123 type_path_entry_t *result = & path->path[len];
3124 memset(result, 0, sizeof(result[0]));
3128 static size_t get_compound_size(const compound_type_t *type)
3130 declaration_t *declaration = type->declaration;
3131 declaration_t *member = declaration->scope.declarations;
3133 for( ; member != NULL; member = member->next) {
3136 /* TODO: cache results? */
3141 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3143 type_t *orig_top_type = path->top_type;
3144 type_t *top_type = skip_typeref(orig_top_type);
3146 assert(is_type_compound(top_type) || is_type_array(top_type));
3148 if(ARR_LEN(path->path) == 0) {
3151 type_path_entry_t *top = get_type_path_top(path);
3152 ir_initializer_t *initializer = top->initializer;
3153 return get_initializer_compound_value(initializer, top->index);
3157 static void descend_into_subtype(type_path_t *path)
3159 type_t *orig_top_type = path->top_type;
3160 type_t *top_type = skip_typeref(orig_top_type);
3162 assert(is_type_compound(top_type) || is_type_array(top_type));
3164 ir_initializer_t *initializer = get_initializer_entry(path);
3166 type_path_entry_t *top = append_to_type_path(path);
3167 top->type = top_type;
3171 if(is_type_compound(top_type)) {
3172 declaration_t *declaration = top_type->compound.declaration;
3173 declaration_t *entry = declaration->scope.declarations;
3175 top->compound_entry = entry;
3177 len = get_compound_size(&top_type->compound);
3179 path->top_type = entry->type;
3181 assert(is_type_array(top_type));
3182 assert(top_type->array.size > 0);
3185 path->top_type = top_type->array.element_type;
3186 len = top_type->array.size;
3188 if(initializer == NULL
3189 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3190 initializer = create_initializer_compound(len);
3191 /* we have to set the entry at the 2nd latest path entry... */
3192 size_t path_len = ARR_LEN(path->path);
3193 assert(path_len >= 1);
3195 type_path_entry_t *entry = & path->path[path_len-2];
3196 ir_initializer_t *tinitializer = entry->initializer;
3197 set_initializer_compound_value(tinitializer, entry->index,
3201 top->initializer = initializer;
3204 static void ascend_from_subtype(type_path_t *path)
3206 type_path_entry_t *top = get_type_path_top(path);
3208 path->top_type = top->type;
3210 size_t len = ARR_LEN(path->path);
3211 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3214 static void walk_designator(type_path_t *path, const designator_t *designator)
3216 /* designators start at current object type */
3217 ARR_RESIZE(type_path_entry_t, path->path, 1);
3219 for( ; designator != NULL; designator = designator->next) {
3220 type_path_entry_t *top = get_type_path_top(path);
3221 type_t *orig_type = top->type;
3222 type_t *type = skip_typeref(orig_type);
3224 if(designator->symbol != NULL) {
3225 assert(is_type_compound(type));
3227 symbol_t *symbol = designator->symbol;
3229 declaration_t *declaration = type->compound.declaration;
3230 declaration_t *iter = declaration->scope.declarations;
3231 for( ; iter != NULL; iter = iter->next, ++index) {
3232 if(iter->symbol == symbol) {
3236 assert(iter != NULL);
3238 top->type = orig_type;
3239 top->compound_entry = iter;
3241 orig_type = iter->type;
3243 expression_t *array_index = designator->array_index;
3244 assert(designator->array_index != NULL);
3245 assert(is_type_array(type));
3246 assert(is_type_valid(array_index->base.type));
3248 long index = fold_constant(array_index);
3251 if(type->array.size_constant == 1) {
3252 long array_size = type->array.size;
3253 assert(index < array_size);
3257 top->type = orig_type;
3258 top->index = (size_t) index;
3259 orig_type = type->array.element_type;
3261 path->top_type = orig_type;
3263 if(designator->next != NULL) {
3264 descend_into_subtype(path);
3268 path->invalid = false;
3271 static void advance_current_object(type_path_t *path)
3274 /* TODO: handle this... */
3275 panic("invalid initializer in ast2firm (excessive elements)");
3279 type_path_entry_t *top = get_type_path_top(path);
3281 type_t *type = skip_typeref(top->type);
3282 if(is_type_union(type)) {
3283 top->compound_entry = NULL;
3284 } else if(is_type_struct(type)) {
3285 declaration_t *entry = top->compound_entry;
3288 entry = entry->next;
3289 top->compound_entry = entry;
3291 path->top_type = entry->type;
3295 assert(is_type_array(type));
3298 if(!type->array.size_constant || top->index < type->array.size) {
3303 /* we're past the last member of the current sub-aggregate, try if we
3304 * can ascend in the type hierarchy and continue with another subobject */
3305 size_t len = ARR_LEN(path->path);
3308 ascend_from_subtype(path);
3309 advance_current_object(path);
3311 path->invalid = true;
3316 static ir_initializer_t *create_ir_initializer(
3317 const initializer_t *initializer, type_t *type);
3319 static ir_initializer_t *create_ir_initializer_value(
3320 const initializer_value_t *initializer)
3322 if (is_type_compound(initializer->value->base.type)) {
3323 panic("initializer creation for compounds not implemented yet");
3325 ir_node *value = expression_to_firm(initializer->value);
3326 return create_initializer_const(value);
3329 static ir_initializer_t *create_ir_initializer_list(
3330 const initializer_list_t *initializer, type_t *type)
3333 memset(&path, 0, sizeof(path));
3334 path.top_type = type;
3335 path.path = NEW_ARR_F(type_path_entry_t, 0);
3337 descend_into_subtype(&path);
3339 for(size_t i = 0; i < initializer->len; ++i) {
3340 const initializer_t *sub_initializer = initializer->initializers[i];
3342 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3343 walk_designator(&path, sub_initializer->designator.designator);
3347 if(sub_initializer->kind == INITIALIZER_VALUE) {
3348 /* we might have to descend into types until we're at a scalar
3351 type_t *orig_top_type = path.top_type;
3352 type_t *top_type = skip_typeref(orig_top_type);
3354 if(is_type_scalar(top_type))
3356 descend_into_subtype(&path);
3360 ir_initializer_t *sub_irinitializer
3361 = create_ir_initializer(sub_initializer, path.top_type);
3363 size_t path_len = ARR_LEN(path.path);
3364 assert(path_len >= 1);
3365 type_path_entry_t *entry = & path.path[path_len-1];
3366 ir_initializer_t *tinitializer = entry->initializer;
3367 set_initializer_compound_value(tinitializer, entry->index,
3370 advance_current_object(&path);
3373 assert(ARR_LEN(path.path) >= 1);
3374 ir_initializer_t *result = path.path[0].initializer;
3375 DEL_ARR_F(path.path);
3380 static ir_initializer_t *create_ir_initializer_string(
3381 const initializer_string_t *initializer, type_t *type)
3383 type = skip_typeref(type);
3385 size_t string_len = initializer->string.size;
3386 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3387 size_t len = type->array.size;
3388 ir_initializer_t *irinitializer = create_initializer_compound(len);
3390 const char *string = initializer->string.begin;
3391 ir_mode *mode = get_type_mode(ir_type_const_char);
3393 for(size_t i = 0; i < len; ++i) {
3398 tarval *tv = new_tarval_from_long(c, mode);
3399 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3401 set_initializer_compound_value(irinitializer, i, char_initializer);
3404 return irinitializer;
3407 static ir_initializer_t *create_ir_initializer_wide_string(
3408 const initializer_wide_string_t *initializer, type_t *type)
3410 size_t string_len = initializer->string.size;
3411 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3412 size_t len = type->array.size;
3413 ir_initializer_t *irinitializer = create_initializer_compound(len);
3415 const wchar_rep_t *string = initializer->string.begin;
3416 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3418 for(size_t i = 0; i < len; ++i) {
3420 if(i < string_len) {
3423 tarval *tv = new_tarval_from_long(c, mode);
3424 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3426 set_initializer_compound_value(irinitializer, i, char_initializer);
3429 return irinitializer;
3432 static ir_initializer_t *create_ir_initializer(
3433 const initializer_t *initializer, type_t *type)
3435 switch(initializer->kind) {
3436 case INITIALIZER_STRING:
3437 return create_ir_initializer_string(&initializer->string, type);
3439 case INITIALIZER_WIDE_STRING:
3440 return create_ir_initializer_wide_string(&initializer->wide_string,
3443 case INITIALIZER_LIST:
3444 return create_ir_initializer_list(&initializer->list, type);
3446 case INITIALIZER_VALUE:
3447 return create_ir_initializer_value(&initializer->value);
3449 case INITIALIZER_DESIGNATOR:
3450 panic("unexpected designator initializer found");
3452 panic("unknown initializer");
3455 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3458 if (is_atomic_type(type)) {
3459 ir_mode *mode = get_type_mode(type);
3460 tarval *zero = get_mode_null(mode);
3461 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3463 /* TODO: bitfields */
3464 ir_node *mem = get_store();
3465 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3466 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3469 assert(is_compound_type(type));
3472 if(is_Array_type(type)) {
3473 assert(has_array_upper_bound(type, 0));
3474 n_members = get_array_upper_bound_int(type, 0);
3476 n_members = get_compound_n_members(type);
3479 for(int i = 0; i < n_members; ++i) {
3482 if(is_Array_type(type)) {
3483 ir_entity *entity = get_array_element_entity(type);
3484 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3485 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3486 ir_node *in[1] = { cnst };
3487 irtype = get_array_element_type(type);
3488 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3490 ir_entity *member = get_compound_member(type, i);
3492 irtype = get_entity_type(member);
3493 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3496 create_dynamic_null_initializer(irtype, dbgi, addr);
3501 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3502 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3504 switch(get_initializer_kind(initializer)) {
3505 case IR_INITIALIZER_NULL: {
3506 create_dynamic_null_initializer(type, dbgi, base_addr);
3509 case IR_INITIALIZER_CONST: {
3510 ir_node *node = get_initializer_const_value(initializer);
3511 ir_mode *mode = get_irn_mode(node);
3512 assert(get_type_mode(type) == mode);
3514 /* TODO: bitfields... */
3515 ir_node *mem = get_store();
3516 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3517 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3521 case IR_INITIALIZER_TARVAL: {
3522 tarval *tv = get_initializer_tarval_value(initializer);
3523 ir_mode *mode = get_tarval_mode(tv);
3524 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3525 assert(get_type_mode(type) == mode);
3527 /* TODO: bitfields... */
3528 ir_node *mem = get_store();
3529 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3530 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3534 case IR_INITIALIZER_COMPOUND: {
3535 assert(is_compound_type(type));
3537 if(is_Array_type(type)) {
3538 assert(has_array_upper_bound(type, 0));
3539 n_members = get_array_upper_bound_int(type, 0);
3541 n_members = get_compound_n_members(type);
3544 if(get_initializer_compound_n_entries(initializer)
3545 != (unsigned) n_members)
3546 panic("initializer doesn't match compound type");
3548 for(int i = 0; i < n_members; ++i) {
3551 if(is_Array_type(type)) {
3552 ir_entity *entity = get_array_element_entity(type);
3553 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3554 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3555 ir_node *in[1] = { cnst };
3556 irtype = get_array_element_type(type);
3557 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3559 ir_entity *member = get_compound_member(type, i);
3561 irtype = get_entity_type(member);
3562 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3565 ir_initializer_t *sub_init
3566 = get_initializer_compound_value(initializer, i);
3568 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3574 panic("invalid IR_INITIALIZER found");
3577 static void create_dynamic_initializer(ir_initializer_t *initializer,
3578 dbg_info *dbgi, ir_entity *entity)
3580 ir_node *frame = get_local_frame(entity);
3581 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3582 ir_type *type = get_entity_type(entity);
3584 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3587 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3588 ir_entity *entity, type_t *type)
3590 ir_node *memory = get_store();
3591 ir_node *nomem = new_NoMem();
3592 ir_node *frame = get_irg_frame(current_ir_graph);
3593 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3595 if(initializer->kind == INITIALIZER_VALUE) {
3596 initializer_value_t *initializer_value = &initializer->value;
3598 ir_node *value = expression_to_firm(initializer_value->value);
3599 type = skip_typeref(type);
3600 assign_value(dbgi, addr, type, value);
3604 if(!is_constant_initializer(initializer)) {
3605 ir_initializer_t *irinitializer
3606 = create_ir_initializer(initializer, type);
3608 create_dynamic_initializer(irinitializer, dbgi, entity);
3612 /* create the ir_initializer */
3613 ir_graph *const old_current_ir_graph = current_ir_graph;
3614 current_ir_graph = get_const_code_irg();
3616 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3618 assert(current_ir_graph == get_const_code_irg());
3619 current_ir_graph = old_current_ir_graph;
3621 /* create a "template" entity which is copied to the entity on the stack */
3622 ident *const id = id_unique("initializer.%u");
3623 ir_type *const irtype = get_ir_type(type);
3624 ir_type *const global_type = get_glob_type();
3625 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3626 set_entity_ld_ident(init_entity, id);
3628 set_entity_variability(init_entity, variability_initialized);
3629 set_entity_visibility(init_entity, visibility_local);
3630 set_entity_allocation(init_entity, allocation_static);
3632 set_entity_initializer(init_entity, irinitializer);
3634 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3635 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3637 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3638 set_store(copyb_mem);
3641 static void create_initializer_local_variable_entity(declaration_t *declaration)
3643 initializer_t *initializer = declaration->init.initializer;
3644 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3645 ir_entity *entity = declaration->v.entity;
3646 type_t *type = declaration->type;
3647 create_local_initializer(initializer, dbgi, entity, type);
3650 static void create_declaration_initializer(declaration_t *declaration)
3652 initializer_t *initializer = declaration->init.initializer;
3653 if(initializer == NULL)
3656 declaration_kind_t declaration_kind
3657 = (declaration_kind_t) declaration->declaration_kind;
3658 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3659 create_initializer_local_variable_entity(declaration);
3663 if(initializer->kind == INITIALIZER_VALUE) {
3664 initializer_value_t *initializer_value = &initializer->value;
3666 = get_dbg_info(&declaration->source_position);
3668 ir_node *value = expression_to_firm(initializer_value->value);
3669 value = do_strict_conv(dbgi, value);
3671 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3672 set_value(declaration->v.value_number, value);
3674 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3676 ir_entity *entity = declaration->v.entity;
3678 set_entity_variability(entity, variability_initialized);
3679 set_atomic_ent_value(entity, value);
3682 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3683 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3685 ir_entity *entity = declaration->v.entity;
3686 ir_initializer_t *irinitializer
3687 = create_ir_initializer(initializer, declaration->type);
3689 set_entity_variability(entity, variability_initialized);
3690 set_entity_initializer(entity, irinitializer);
3694 static void create_variable_length_array(declaration_t *declaration)
3696 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3697 type_t *type = declaration->type;
3698 ir_node *mem = get_store();
3699 ir_type *el_type = get_ir_type(type->array.element_type);
3701 /* make sure size_node is calculated */
3702 get_type_size(type);
3703 ir_node *elems = type->array.size_node;
3704 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3706 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3707 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3710 /* initializers are not allowed for VLAs */
3711 assert(declaration->init.initializer == NULL);
3713 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3714 declaration->v.vla_base = addr;
3716 /* TODO: record VLA somewhere so we create the free node when we leave
3721 * Creates a Firm local variable from a declaration.
3723 static void create_local_variable(declaration_t *declaration)
3725 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3727 bool needs_entity = declaration->address_taken;
3728 type_t *type = skip_typeref(declaration->type);
3730 /* is it a variable length array? */
3731 if(is_type_array(type) && !type->array.size_constant) {
3732 create_variable_length_array(declaration);
3734 } else if(is_type_array(type) || is_type_compound(type)) {
3735 needs_entity = true;
3736 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3737 needs_entity = true;
3741 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3742 create_declaration_entity(declaration,
3743 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3746 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3747 declaration->v.value_number = next_value_number_function;
3748 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3749 ++next_value_number_function;
3753 static void create_local_static_variable(declaration_t *declaration)
3755 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3757 type_t *const type = skip_typeref(declaration->type);
3758 ir_type *const global_type = get_glob_type();
3759 ir_type *const irtype = get_ir_type(type);
3760 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3762 size_t l = strlen(declaration->symbol->string);
3763 char buf[l + sizeof(".%u")];
3764 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3765 ident *const id = id_unique(buf);
3767 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3769 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3770 set_entity_volatility(entity, volatility_is_volatile);
3773 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3774 declaration->v.entity = entity;
3775 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3776 set_entity_variability(entity, variability_uninitialized);
3777 set_entity_visibility(entity, visibility_local);
3778 set_entity_allocation(entity, allocation_static);
3780 ir_graph *const old_current_ir_graph = current_ir_graph;
3781 current_ir_graph = get_const_code_irg();
3783 create_declaration_initializer(declaration);
3785 assert(current_ir_graph == get_const_code_irg());
3786 current_ir_graph = old_current_ir_graph;
3791 static void return_statement_to_firm(return_statement_t *statement)
3793 if(get_cur_block() == NULL)
3796 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3797 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3802 if(get_method_n_ress(func_irtype) > 0) {
3803 ir_type *res_type = get_method_res_type(func_irtype, 0);
3805 if(statement->value != NULL) {
3806 ir_node *node = expression_to_firm(statement->value);
3807 node = do_strict_conv(dbgi, node);
3811 if(is_compound_type(res_type)) {
3814 mode = get_type_mode(res_type);
3816 in[0] = new_Unknown(mode);
3820 /* build return_value for its side effects */
3821 if(statement->value != NULL) {
3822 expression_to_firm(statement->value);
3827 ir_node *store = get_store();
3828 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3830 ir_node *end_block = get_irg_end_block(current_ir_graph);
3831 add_immBlock_pred(end_block, ret);
3833 set_cur_block(NULL);
3836 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3838 if(get_cur_block() == NULL)
3841 return expression_to_firm(statement->expression);
3844 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3846 declaration_t *declaration = compound->scope.declarations;
3847 for( ; declaration != NULL; declaration = declaration->next) {
3848 create_local_declaration(declaration);
3851 ir_node *result = NULL;
3852 statement_t *statement = compound->statements;
3853 for( ; statement != NULL; statement = statement->base.next) {
3854 if(statement->base.next == NULL
3855 && statement->kind == STATEMENT_EXPRESSION) {
3856 result = expression_statement_to_firm(
3857 &statement->expression);
3860 statement_to_firm(statement);
3866 static void create_global_variable(declaration_t *declaration)
3870 switch ((storage_class_tag_t)declaration->storage_class) {
3871 case STORAGE_CLASS_STATIC:
3872 vis = visibility_local;
3875 case STORAGE_CLASS_EXTERN:
3876 vis = visibility_external_allocated;
3879 case STORAGE_CLASS_NONE:
3880 vis = visibility_external_visible;
3883 case STORAGE_CLASS_THREAD:
3884 vis = visibility_external_visible;
3887 case STORAGE_CLASS_THREAD_EXTERN:
3888 vis = visibility_external_allocated;
3891 case STORAGE_CLASS_THREAD_STATIC:
3892 vis = visibility_local;
3896 var_type = get_tls_type();
3900 var_type = get_glob_type();
3904 create_declaration_entity(declaration,
3905 DECLARATION_KIND_GLOBAL_VARIABLE,
3907 if (!is_type_function(skip_typeref(declaration->type))) {
3908 set_entity_visibility(declaration->v.entity, vis);
3913 case STORAGE_CLASS_TYPEDEF:
3914 case STORAGE_CLASS_AUTO:
3915 case STORAGE_CLASS_REGISTER:
3916 case STORAGE_CLASS_ENUM_ENTRY:
3919 panic("Invalid storage class for global variable");
3922 static void create_local_declaration(declaration_t *declaration)
3924 if (declaration->namespc != NAMESPACE_NORMAL)
3926 /* construct type */
3927 (void) get_ir_type(declaration->type);
3928 if (declaration->symbol == NULL) {
3932 type_t *type = skip_typeref(declaration->type);
3934 switch ((storage_class_tag_t) declaration->storage_class) {
3935 case STORAGE_CLASS_STATIC:
3936 create_local_static_variable(declaration);
3938 case STORAGE_CLASS_EXTERN:
3939 create_global_variable(declaration);
3940 create_declaration_initializer(declaration);
3942 case STORAGE_CLASS_NONE:
3943 case STORAGE_CLASS_AUTO:
3944 case STORAGE_CLASS_REGISTER:
3945 if(is_type_function(type)) {
3946 if(declaration->init.statement != NULL) {
3947 panic("nested functions not supported yet");
3949 get_function_entity(declaration);
3952 create_local_variable(declaration);
3955 case STORAGE_CLASS_ENUM_ENTRY:
3956 /* should already be handled */
3957 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
3959 case STORAGE_CLASS_TYPEDEF:
3960 declaration->declaration_kind = DECLARATION_KIND_TYPE;
3962 case STORAGE_CLASS_THREAD:
3963 case STORAGE_CLASS_THREAD_EXTERN:
3964 case STORAGE_CLASS_THREAD_STATIC:
3967 panic("invalid storage class found");
3970 static void initialize_local_declaration(declaration_t *declaration)
3972 if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
3975 switch ((declaration_kind_t) declaration->declaration_kind) {
3976 case DECLARATION_KIND_LOCAL_VARIABLE:
3977 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
3978 create_declaration_initializer(declaration);
3981 case DECLARATION_KIND_LABEL_BLOCK:
3982 case DECLARATION_KIND_COMPOUND_MEMBER:
3983 case DECLARATION_KIND_GLOBAL_VARIABLE:
3984 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
3985 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
3986 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
3987 case DECLARATION_KIND_FUNCTION:
3988 case DECLARATION_KIND_TYPE:
3989 case DECLARATION_KIND_ENUM_ENTRY:
3992 case DECLARATION_KIND_UNKNOWN:
3993 panic("can't initialize unknwon declaration");
3995 panic("invalid declaration kind");
3998 static void declaration_statement_to_firm(declaration_statement_t *statement)
4000 declaration_t *declaration = statement->declarations_begin;
4001 declaration_t *end = statement->declarations_end->next;
4002 for( ; declaration != end; declaration = declaration->next) {
4003 if(declaration->namespc != NAMESPACE_NORMAL)
4005 initialize_local_declaration(declaration);
4009 static void if_statement_to_firm(if_statement_t *statement)
4011 ir_node *cur_block = get_cur_block();
4013 ir_node *fallthrough_block = NULL;
4015 /* the true (blocks) */
4016 ir_node *true_block = NULL;
4017 if (statement->true_statement != NULL) {
4018 true_block = new_immBlock();
4019 statement_to_firm(statement->true_statement);
4020 if (get_cur_block() != NULL) {
4021 ir_node *jmp = new_Jmp();
4022 if (fallthrough_block == NULL)
4023 fallthrough_block = new_immBlock();
4024 add_immBlock_pred(fallthrough_block, jmp);
4028 /* the false (blocks) */
4029 ir_node *false_block = NULL;
4030 if (statement->false_statement != NULL) {
4031 false_block = new_immBlock();
4033 statement_to_firm(statement->false_statement);
4034 if (get_cur_block() != NULL) {
4035 ir_node *jmp = new_Jmp();
4036 if (fallthrough_block == NULL)
4037 fallthrough_block = new_immBlock();
4038 add_immBlock_pred(fallthrough_block, jmp);
4042 /* create the condition */
4043 if (cur_block != NULL) {
4044 if (true_block == NULL || false_block == NULL) {
4045 if (fallthrough_block == NULL)
4046 fallthrough_block = new_immBlock();
4047 if (true_block == NULL)
4048 true_block = fallthrough_block;
4049 if (false_block == NULL)
4050 false_block = fallthrough_block;
4053 set_cur_block(cur_block);
4054 create_condition_evaluation(statement->condition, true_block,
4058 mature_immBlock(true_block);
4059 if (false_block != fallthrough_block) {
4060 mature_immBlock(false_block);
4062 if (fallthrough_block != NULL) {
4063 mature_immBlock(fallthrough_block);
4066 set_cur_block(fallthrough_block);
4069 static void while_statement_to_firm(while_statement_t *statement)
4071 ir_node *jmp = NULL;
4072 if(get_cur_block() != NULL) {
4076 /* create the header block */
4077 ir_node *header_block = new_immBlock();
4079 add_immBlock_pred(header_block, jmp);
4082 /* the false block */
4083 ir_node *false_block = new_immBlock();
4086 ir_node *body_block;
4087 if (statement->body != NULL) {
4088 ir_node *old_continue_label = continue_label;
4089 ir_node *old_break_label = break_label;
4090 continue_label = header_block;
4091 break_label = false_block;
4093 body_block = new_immBlock();
4094 statement_to_firm(statement->body);
4096 assert(continue_label == header_block);
4097 assert(break_label == false_block);
4098 continue_label = old_continue_label;
4099 break_label = old_break_label;
4101 if(get_cur_block() != NULL) {
4103 add_immBlock_pred(header_block, jmp);
4106 body_block = header_block;
4109 /* create the condition */
4110 set_cur_block(header_block);
4112 create_condition_evaluation(statement->condition, body_block, false_block);
4113 mature_immBlock(body_block);
4114 mature_immBlock(false_block);
4115 mature_immBlock(header_block);
4117 set_cur_block(false_block);
4120 static void do_while_statement_to_firm(do_while_statement_t *statement)
4122 ir_node *jmp = NULL;
4123 if(get_cur_block() != NULL) {
4127 /* create the header block */
4128 ir_node *header_block = new_immBlock();
4130 /* the false block */
4131 ir_node *false_block = new_immBlock();
4134 ir_node *body_block = new_immBlock();
4136 add_immBlock_pred(body_block, jmp);
4139 if (statement->body != NULL) {
4140 ir_node *old_continue_label = continue_label;
4141 ir_node *old_break_label = break_label;
4142 continue_label = header_block;
4143 break_label = false_block;
4145 statement_to_firm(statement->body);
4147 assert(continue_label == header_block);
4148 assert(break_label == false_block);
4149 continue_label = old_continue_label;
4150 break_label = old_break_label;
4152 if (get_cur_block() == NULL) {
4153 mature_immBlock(header_block);
4154 mature_immBlock(body_block);
4155 mature_immBlock(false_block);
4160 ir_node *body_jmp = new_Jmp();
4161 add_immBlock_pred(header_block, body_jmp);
4162 mature_immBlock(header_block);
4164 /* create the condition */
4165 set_cur_block(header_block);
4167 create_condition_evaluation(statement->condition, body_block, false_block);
4168 mature_immBlock(body_block);
4169 mature_immBlock(false_block);
4170 mature_immBlock(header_block);
4172 set_cur_block(false_block);
4175 static void for_statement_to_firm(for_statement_t *statement)
4177 ir_node *jmp = NULL;
4179 /* create declarations */
4180 declaration_t *declaration = statement->scope.declarations;
4181 for( ; declaration != NULL; declaration = declaration->next) {
4182 create_local_declaration(declaration);
4184 declaration = statement->scope.declarations;
4185 for( ; declaration != NULL; declaration = declaration->next) {
4186 initialize_local_declaration(declaration);
4189 if (get_cur_block() != NULL) {
4190 if(statement->initialisation != NULL) {
4191 expression_to_firm(statement->initialisation);
4198 /* create the step block */
4199 ir_node *const step_block = new_immBlock();
4200 if (statement->step != NULL) {
4201 expression_to_firm(statement->step);
4203 ir_node *const step_jmp = new_Jmp();
4205 /* create the header block */
4206 ir_node *const header_block = new_immBlock();
4208 add_immBlock_pred(header_block, jmp);
4210 add_immBlock_pred(header_block, step_jmp);
4212 /* the false block */
4213 ir_node *const false_block = new_immBlock();
4216 ir_node * body_block;
4217 if (statement->body != NULL) {
4218 ir_node *const old_continue_label = continue_label;
4219 ir_node *const old_break_label = break_label;
4220 continue_label = step_block;
4221 break_label = false_block;
4223 body_block = new_immBlock();
4224 statement_to_firm(statement->body);
4226 assert(continue_label == step_block);
4227 assert(break_label == false_block);
4228 continue_label = old_continue_label;
4229 break_label = old_break_label;
4231 if (get_cur_block() != NULL) {
4233 add_immBlock_pred(step_block, jmp);
4236 body_block = step_block;
4239 /* create the condition */
4240 set_cur_block(header_block);
4241 if (statement->condition != NULL) {
4242 create_condition_evaluation(statement->condition, body_block,
4245 keep_alive(header_block);
4247 add_immBlock_pred(body_block, jmp);
4250 mature_immBlock(body_block);
4251 mature_immBlock(false_block);
4252 mature_immBlock(step_block);
4253 mature_immBlock(header_block);
4254 mature_immBlock(false_block);
4256 set_cur_block(false_block);
4259 static void create_jump_statement(const statement_t *statement,
4260 ir_node *target_block)
4262 if(get_cur_block() == NULL)
4265 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4266 ir_node *jump = new_d_Jmp(dbgi);
4267 add_immBlock_pred(target_block, jump);
4269 set_cur_block(NULL);
4272 static ir_node *get_break_label(void)
4274 if (break_label == NULL) {
4275 ir_node *cur_block = get_cur_block();
4276 break_label = new_immBlock();
4277 set_cur_block(cur_block);
4282 static void switch_statement_to_firm(const switch_statement_t *statement)
4284 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4286 ir_node *expression = expression_to_firm(statement->expression);
4287 ir_node *cond = new_d_Cond(dbgi, expression);
4289 set_cur_block(NULL);
4291 ir_node *const old_switch_cond = current_switch_cond;
4292 ir_node *const old_break_label = break_label;
4293 const bool old_saw_default_label = saw_default_label;
4294 saw_default_label = false;
4295 current_switch_cond = cond;
4298 if (statement->body != NULL) {
4299 statement_to_firm(statement->body);
4302 if (get_cur_block() != NULL) {
4303 ir_node *jmp = new_Jmp();
4304 add_immBlock_pred(get_break_label(), jmp);
4307 if (!saw_default_label) {
4308 set_cur_block(get_nodes_block(cond));
4309 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4310 MAGIC_DEFAULT_PN_NUMBER);
4311 add_immBlock_pred(get_break_label(), proj);
4314 if (break_label != NULL) {
4315 mature_immBlock(break_label);
4317 set_cur_block(break_label);
4319 assert(current_switch_cond == cond);
4320 current_switch_cond = old_switch_cond;
4321 break_label = old_break_label;
4322 saw_default_label = old_saw_default_label;
4325 static void case_label_to_firm(const case_label_statement_t *statement)
4327 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4329 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4331 /* let's create a node and hope firm constant folding creates a Const
4334 ir_node *old_block = get_nodes_block(current_switch_cond);
4335 ir_node *block = new_immBlock();
4337 set_cur_block(old_block);
4338 if(statement->expression != NULL) {
4339 long start_pn = fold_constant(statement->expression);
4340 long end_pn = start_pn;
4341 if (statement->end_range != NULL) {
4342 end_pn = fold_constant(statement->end_range);
4344 assert(start_pn <= end_pn);
4345 /* create jumps for all cases in the given range */
4346 for (long pn = start_pn; pn <= end_pn; ++pn) {
4347 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4348 /* oops someone detected our cheating... */
4349 panic("magic default pn used");
4351 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4352 add_immBlock_pred(block, proj);
4355 saw_default_label = true;
4356 proj = new_d_defaultProj(dbgi, current_switch_cond,
4357 MAGIC_DEFAULT_PN_NUMBER);
4359 add_immBlock_pred(block, proj);
4362 if (fallthrough != NULL) {
4363 add_immBlock_pred(block, fallthrough);
4365 mature_immBlock(block);
4366 set_cur_block(block);
4368 if(statement->statement != NULL) {
4369 statement_to_firm(statement->statement);
4373 static ir_node *get_label_block(declaration_t *label)
4375 assert(label->namespc == NAMESPACE_LABEL);
4377 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4378 return label->v.block;
4380 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4382 ir_node *old_cur_block = get_cur_block();
4383 ir_node *block = new_immBlock();
4384 set_cur_block(old_cur_block);
4386 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4387 label->v.block = block;
4389 ARR_APP1(ir_node *, imature_blocks, block);
4394 static void label_to_firm(const label_statement_t *statement)
4396 ir_node *block = get_label_block(statement->label);
4398 if(get_cur_block() != NULL) {
4399 ir_node *jmp = new_Jmp();
4400 add_immBlock_pred(block, jmp);
4403 set_cur_block(block);
4406 if(statement->statement != NULL) {
4407 statement_to_firm(statement->statement);
4411 static void goto_to_firm(const goto_statement_t *statement)
4413 if(get_cur_block() == NULL)
4416 ir_node *block = get_label_block(statement->label);
4417 ir_node *jmp = new_Jmp();
4418 add_immBlock_pred(block, jmp);
4420 set_cur_block(NULL);
4423 typedef enum modifier_t {
4424 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4425 ASM_MODIFIER_READ_WRITE = 1 << 1,
4426 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4427 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4430 static void asm_statement_to_firm(const asm_statement_t *statement)
4433 fprintf(stderr, "WARNING asm not implemented yet!\n");
4435 bool needs_memory = false;
4437 size_t n_clobbers = 0;
4438 asm_clobber_t *clobber = statement->clobbers;
4439 for( ; clobber != NULL; clobber = clobber->next) {
4440 if(strcmp(clobber->clobber, "memory") == 0) {
4441 needs_memory = true;
4445 ident *id = new_id_from_str(clobber->clobber);
4446 obstack_ptr_grow(&asm_obst, id);
4449 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4450 ident **clobbers = NULL;
4451 if(n_clobbers > 0) {
4452 clobbers = obstack_finish(&asm_obst);
4455 /* find and count input and output constraints */
4456 asm_constraint_t *constraint = statement->inputs;
4457 for( ; constraint != NULL; constraint = constraint->next) {
4459 bool supports_memop = false;
4460 for(const char *c = constraint->constraints; *c != 0; ++c) {
4461 /* TODO: improve error messages */
4465 panic("multiple alternative assembler constraints not "
4473 supports_memop = true;
4474 obstack_1grow(&asm_obst, *c);
4477 if(modifiers & ASM_MODIFIER_READ_WRITE)
4478 panic("inconsistent register constraints");
4479 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4482 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4483 panic("inconsistent register constraints");
4484 modifiers |= ASM_MODIFIER_READ_WRITE;
4487 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4488 panic("early clobber assembler constraint not supported yet");
4491 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4492 panic("commutative assembler constraint not supported yet");
4495 /* skip register preferences stuff... */
4496 while(*c != 0 && *c != ',')
4500 /* skip register preferences stuff... */
4504 obstack_1grow(&asm_obst, *c);
4508 obstack_1grow(&asm_obst, '\0');
4509 const char *constraint_string = obstack_finish(&asm_obst);
4511 needs_memory |= supports_memop;
4512 if(supports_memop) {
4519 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4520 statement_to_firm(statement->try_statement);
4521 warningf(&statement->base.source_position, "structured exception handling ignored");
4524 static void leave_statement_to_firm(leave_statement_t *statement) {
4525 errorf(&statement->base.source_position, "__leave not supported yet");
4529 * Transform a statement.
4531 static void statement_to_firm(statement_t *statement)
4534 assert(!statement->base.transformed);
4535 statement->base.transformed = true;
4538 switch(statement->kind) {
4539 case STATEMENT_INVALID:
4540 panic("invalid statement found");
4542 case STATEMENT_EMPTY:
4545 case STATEMENT_COMPOUND:
4546 compound_statement_to_firm(&statement->compound);
4548 case STATEMENT_RETURN:
4549 return_statement_to_firm(&statement->returns);
4551 case STATEMENT_EXPRESSION:
4552 expression_statement_to_firm(&statement->expression);
4555 if_statement_to_firm(&statement->ifs);
4557 case STATEMENT_WHILE:
4558 while_statement_to_firm(&statement->whiles);
4560 case STATEMENT_DO_WHILE:
4561 do_while_statement_to_firm(&statement->do_while);
4563 case STATEMENT_DECLARATION:
4564 declaration_statement_to_firm(&statement->declaration);
4566 case STATEMENT_BREAK:
4567 create_jump_statement(statement, get_break_label());
4569 case STATEMENT_CONTINUE:
4570 create_jump_statement(statement, continue_label);
4572 case STATEMENT_SWITCH:
4573 switch_statement_to_firm(&statement->switchs);
4575 case STATEMENT_CASE_LABEL:
4576 case_label_to_firm(&statement->case_label);
4579 for_statement_to_firm(&statement->fors);
4581 case STATEMENT_LABEL:
4582 label_to_firm(&statement->label);
4584 case STATEMENT_GOTO:
4585 goto_to_firm(&statement->gotos);
4588 asm_statement_to_firm(&statement->asms);
4590 case STATEMENT_MS_TRY:
4591 ms_try_statement_to_firm(&statement->ms_try);
4593 case STATEMENT_LEAVE:
4594 leave_statement_to_firm(&statement->leave);
4597 panic("Statement not implemented\n");
4600 static int count_decls_in_expression(const expression_t *expression);
4602 static int count_local_declarations(const declaration_t * decl,
4603 const declaration_t *const end)
4606 for (; decl != end; decl = decl->next) {
4607 if(decl->namespc != NAMESPACE_NORMAL)
4609 const type_t *type = skip_typeref(decl->type);
4610 if (!decl->address_taken && is_type_scalar(type))
4612 const initializer_t *initializer = decl->init.initializer;
4613 /* FIXME: should walk initializer hierarchies... */
4614 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4615 count += count_decls_in_expression(initializer->value.value);
4621 static int count_decls_in_expression(const expression_t *expression) {
4624 if(expression == NULL)
4627 switch((expression_kind_t) expression->base.kind) {
4628 case EXPR_STATEMENT:
4629 return count_decls_in_stmts(expression->statement.statement);
4631 int count_left = count_decls_in_expression(expression->binary.left);
4632 int count_right = count_decls_in_expression(expression->binary.right);
4633 return count_left + count_right;
4636 return count_decls_in_expression(expression->unary.value);
4638 call_argument_t *argument = expression->call.arguments;
4639 for( ; argument != NULL; argument = argument->next) {
4640 count += count_decls_in_expression(argument->expression);
4647 panic("unexpected expression kind");
4649 case EXPR_COMPOUND_LITERAL:
4653 case EXPR_CONDITIONAL:
4654 count += count_decls_in_expression(expression->conditional.condition);
4655 count += count_decls_in_expression(expression->conditional.true_expression);
4656 count += count_decls_in_expression(expression->conditional.false_expression);
4659 case EXPR_BUILTIN_PREFETCH:
4660 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4661 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4662 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4665 case EXPR_BUILTIN_CONSTANT_P:
4666 count += count_decls_in_expression(expression->builtin_constant.value);
4670 count += count_decls_in_expression(expression->select.compound);
4673 case EXPR_ARRAY_ACCESS:
4674 count += count_decls_in_expression(expression->array_access.array_ref);
4675 count += count_decls_in_expression(expression->array_access.index);
4678 case EXPR_CLASSIFY_TYPE:
4679 count += count_decls_in_expression(expression->classify_type.type_expression);
4683 case EXPR_ALIGNOF: {
4684 expression_t *tp_expression = expression->typeprop.tp_expression;
4685 if (tp_expression != NULL) {
4686 count += count_decls_in_expression(tp_expression);
4692 case EXPR_REFERENCE:
4694 case EXPR_CHARACTER_CONSTANT:
4695 case EXPR_WIDE_CHARACTER_CONSTANT:
4696 case EXPR_STRING_LITERAL:
4697 case EXPR_WIDE_STRING_LITERAL:
4699 case EXPR_BUILTIN_SYMBOL:
4705 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4706 * (or implement all the missing expressions here/implement a walker)
4712 static int count_decls_in_stmts(const statement_t *stmt)
4715 for (; stmt != NULL; stmt = stmt->base.next) {
4716 switch (stmt->kind) {
4717 case STATEMENT_EMPTY:
4720 case STATEMENT_DECLARATION: {
4721 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4722 count += count_local_declarations(decl_stmt->declarations_begin,
4723 decl_stmt->declarations_end->next);
4727 case STATEMENT_COMPOUND: {
4728 const compound_statement_t *const comp =
4730 count += count_decls_in_stmts(comp->statements);
4734 case STATEMENT_IF: {
4735 const if_statement_t *const if_stmt = &stmt->ifs;
4736 count += count_decls_in_expression(if_stmt->condition);
4737 count += count_decls_in_stmts(if_stmt->true_statement);
4738 count += count_decls_in_stmts(if_stmt->false_statement);
4742 case STATEMENT_SWITCH: {
4743 const switch_statement_t *const switch_stmt = &stmt->switchs;
4744 count += count_decls_in_expression(switch_stmt->expression);
4745 count += count_decls_in_stmts(switch_stmt->body);
4749 case STATEMENT_LABEL: {
4750 const label_statement_t *const label_stmt = &stmt->label;
4751 if(label_stmt->statement != NULL) {
4752 count += count_decls_in_stmts(label_stmt->statement);
4757 case STATEMENT_WHILE: {
4758 const while_statement_t *const while_stmt = &stmt->whiles;
4759 count += count_decls_in_expression(while_stmt->condition);
4760 count += count_decls_in_stmts(while_stmt->body);
4764 case STATEMENT_DO_WHILE: {
4765 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4766 count += count_decls_in_expression(do_while_stmt->condition);
4767 count += count_decls_in_stmts(do_while_stmt->body);
4771 case STATEMENT_FOR: {
4772 const for_statement_t *const for_stmt = &stmt->fors;
4773 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4774 count += count_decls_in_expression(for_stmt->initialisation);
4775 count += count_decls_in_expression(for_stmt->condition);
4776 count += count_decls_in_expression(for_stmt->step);
4777 count += count_decls_in_stmts(for_stmt->body);
4781 case STATEMENT_CASE_LABEL: {
4782 const case_label_statement_t *label = &stmt->case_label;
4783 count += count_decls_in_expression(label->expression);
4784 if(label->statement != NULL) {
4785 count += count_decls_in_stmts(label->statement);
4791 case STATEMENT_BREAK:
4792 case STATEMENT_CONTINUE:
4795 case STATEMENT_EXPRESSION: {
4796 const expression_statement_t *expr_stmt = &stmt->expression;
4797 count += count_decls_in_expression(expr_stmt->expression);
4801 case STATEMENT_GOTO:
4802 case STATEMENT_LEAVE:
4803 case STATEMENT_INVALID:
4806 case STATEMENT_RETURN: {
4807 const return_statement_t *ret_stmt = &stmt->returns;
4808 count += count_decls_in_expression(ret_stmt->value);
4812 case STATEMENT_MS_TRY: {
4813 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4814 count += count_decls_in_stmts(try_stmt->try_statement);
4815 if(try_stmt->except_expression != NULL)
4816 count += count_decls_in_expression(try_stmt->except_expression);
4817 count += count_decls_in_stmts(try_stmt->final_statement);
4825 static int get_function_n_local_vars(declaration_t *declaration)
4829 /* count parameters */
4830 count += count_local_declarations(declaration->scope.declarations, NULL);
4832 /* count local variables declared in body */
4833 count += count_decls_in_stmts(declaration->init.statement);
4838 static void initialize_function_parameters(declaration_t *declaration)
4840 ir_graph *irg = current_ir_graph;
4841 ir_node *args = get_irg_args(irg);
4842 ir_node *start_block = get_irg_start_block(irg);
4843 ir_type *function_irtype = get_ir_type(declaration->type);
4846 declaration_t *parameter = declaration->scope.declarations;
4847 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4848 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4849 type_t *type = skip_typeref(parameter->type);
4851 bool needs_entity = parameter->address_taken;
4852 assert(!is_type_array(type));
4853 if(is_type_compound(type)) {
4854 needs_entity = true;
4858 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4859 ident *id = new_id_from_str(parameter->symbol->string);
4860 set_entity_ident(entity, id);
4862 parameter->declaration_kind
4863 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4864 parameter->v.entity = entity;
4868 ir_type *param_irtype = get_method_param_type(function_irtype, n);
4869 ir_mode *param_mode = get_type_mode(param_irtype);
4872 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
4874 ir_mode *mode = get_ir_mode(parameter->type);
4875 value = create_conv(NULL, value, mode);
4876 value = do_strict_conv(NULL, value);
4878 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4879 parameter->v.value_number = next_value_number_function;
4880 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4881 ++next_value_number_function;
4883 set_value(parameter->v.value_number, value);
4888 * Handle additional decl modifiers for IR-graphs
4890 * @param irg the IR-graph
4891 * @param dec_modifiers additional modifiers
4893 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4895 if (decl_modifiers & DM_NORETURN) {
4896 /* TRUE if the declaration includes the Microsoft
4897 __declspec(noreturn) specifier. */
4898 set_irg_additional_property(irg, mtp_property_noreturn);
4900 if (decl_modifiers & DM_NOTHROW) {
4901 /* TRUE if the declaration includes the Microsoft
4902 __declspec(nothrow) specifier. */
4903 set_irg_additional_property(irg, mtp_property_nothrow);
4905 if (decl_modifiers & DM_NAKED) {
4906 /* TRUE if the declaration includes the Microsoft
4907 __declspec(naked) specifier. */
4908 set_irg_additional_property(irg, mtp_property_naked);
4910 if (decl_modifiers & DM_FORCEINLINE) {
4911 /* TRUE if the declaration includes the
4912 Microsoft __forceinline specifier. */
4913 set_irg_inline_property(irg, irg_inline_forced);
4915 if (decl_modifiers & DM_NOINLINE) {
4916 /* TRUE if the declaration includes the Microsoft
4917 __declspec(noinline) specifier. */
4918 set_irg_inline_property(irg, irg_inline_forbidden);
4923 * Create code for a function.
4925 static void create_function(declaration_t *declaration)
4927 ir_entity *function_entity = get_function_entity(declaration);
4929 if(declaration->init.statement == NULL)
4932 current_function_decl = declaration;
4933 current_function_name = NULL;
4934 current_funcsig = NULL;
4936 assert(imature_blocks == NULL);
4937 imature_blocks = NEW_ARR_F(ir_node*, 0);
4939 int n_local_vars = get_function_n_local_vars(declaration);
4940 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4942 set_irg_fp_model(irg, firm_opt.fp_model);
4943 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4944 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4946 ir_node *first_block = get_cur_block();
4948 /* set inline flags */
4949 if (declaration->is_inline)
4950 set_irg_inline_property(irg, irg_inline_recomended);
4951 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4953 next_value_number_function = 0;
4954 initialize_function_parameters(declaration);
4956 statement_to_firm(declaration->init.statement);
4958 ir_node *end_block = get_irg_end_block(irg);
4960 /* do we have a return statement yet? */
4961 if(get_cur_block() != NULL) {
4962 type_t *type = skip_typeref(declaration->type);
4963 assert(is_type_function(type));
4964 const function_type_t *func_type = &type->function;
4965 const type_t *return_type
4966 = skip_typeref(func_type->return_type);
4969 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4970 ret = new_Return(get_store(), 0, NULL);
4973 if(is_type_scalar(return_type)) {
4974 mode = get_ir_mode(func_type->return_type);
4980 /* ยง5.1.2.2.3 main implicitly returns 0 */
4981 if (strcmp(declaration->symbol->string, "main") == 0) {
4982 in[0] = new_Const(mode, get_mode_null(mode));
4984 in[0] = new_Unknown(mode);
4985 if(warning.return_type) {
4986 warningf(&declaration->source_position,
4987 "missing return statement at end of non-void function '%Y'",
4988 declaration->symbol);
4991 ret = new_Return(get_store(), 1, in);
4993 add_immBlock_pred(end_block, ret);
4996 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4997 mature_immBlock(imature_blocks[i]);
4999 DEL_ARR_F(imature_blocks);
5000 imature_blocks = NULL;
5002 mature_immBlock(first_block);
5003 mature_immBlock(end_block);
5005 irg_finalize_cons(irg);
5007 /* finalize the frame type */
5008 ir_type *frame_type = get_irg_frame_type(irg);
5009 int n = get_compound_n_members(frame_type);
5012 for(int i = 0; i < n; ++i) {
5013 ir_entity *entity = get_compound_member(frame_type, i);
5014 ir_type *entity_type = get_entity_type(entity);
5016 int align = get_type_alignment_bytes(entity_type);
5017 if(align > align_all)
5021 misalign = offset % align;
5023 offset += align - misalign;
5027 set_entity_offset(entity, offset);
5028 offset += get_type_size_bytes(entity_type);
5030 set_type_size_bytes(frame_type, offset);
5031 set_type_alignment_bytes(frame_type, align_all);
5036 static void scope_to_firm(scope_t *scope)
5038 /* first pass: create declarations */
5039 declaration_t *declaration = scope->declarations;
5040 for( ; declaration != NULL; declaration = declaration->next) {
5041 if(declaration->namespc != NAMESPACE_NORMAL)
5043 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5044 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5046 if(declaration->symbol == NULL)
5049 type_t *type = skip_typeref(declaration->type);
5050 if(is_type_function(type)) {
5051 get_function_entity(declaration);
5053 create_global_variable(declaration);
5057 /* second pass: create code/initializers */
5058 declaration = scope->declarations;
5059 for( ; declaration != NULL; declaration = declaration->next) {
5060 if(declaration->namespc != NAMESPACE_NORMAL)
5062 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5063 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5065 if(declaration->symbol == NULL)
5068 type_t *type = declaration->type;
5069 if(type->kind == TYPE_FUNCTION) {
5070 create_function(declaration);
5072 assert(declaration->declaration_kind
5073 == DECLARATION_KIND_GLOBAL_VARIABLE);
5074 current_ir_graph = get_const_code_irg();
5075 create_declaration_initializer(declaration);
5080 void init_ast2firm(void)
5082 obstack_init(&asm_obst);
5083 init_atomic_modes();
5085 id_underscore = new_id_from_chars("_", 1);
5086 id_imp = new_id_from_chars("__imp_", 6);
5088 /* OS option must be set to the backend */
5089 const char *s = "ia32-gasmode=linux";
5090 switch (firm_opt.os_support) {
5091 case OS_SUPPORT_MINGW:
5092 create_ld_ident = create_ld_ident_win32;
5093 s = "ia32-gasmode=mingw";
5095 case OS_SUPPORT_LINUX:
5096 create_ld_ident = create_ld_ident_linux_elf;
5097 s = "ia32-gasmode=linux"; break;
5099 case OS_SUPPORT_MACHO:
5100 create_ld_ident = create_ld_ident_macho;
5101 s = "ia32-gasmode=macho"; break;
5106 /* create idents for all known runtime functions */
5107 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5108 rts_idents[i] = new_id_from_str(rts_data[i].name);
5111 entitymap_init(&entitymap);
5114 static void init_ir_types(void)
5116 static int ir_types_initialized = 0;
5117 if(ir_types_initialized)
5119 ir_types_initialized = 1;
5121 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5122 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5123 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5125 ir_type_int = get_ir_type(type_int);
5126 ir_type_const_char = get_ir_type(type_const_char);
5127 ir_type_wchar_t = get_ir_type(type_wchar_t);
5128 ir_type_void = get_ir_type(type_void);
5131 void exit_ast2firm(void)
5133 entitymap_destroy(&entitymap);
5134 obstack_free(&asm_obst, NULL);
5137 void translation_unit_to_firm(translation_unit_t *unit)
5139 /* just to be sure */
5140 continue_label = NULL;
5142 current_switch_cond = NULL;
5146 scope_to_firm(&unit->scope);