2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 #include <libfirm/firm.h>
28 #include <libfirm/adt/obst.h>
29 #include <libfirm/be.h>
33 #include "adt/error.h"
34 #include "adt/array.h"
41 #include "diagnostic.h"
42 #include "lang_features.h"
44 #include "type_hash.h"
46 #include "walk_statements.h"
48 #include "entitymap_t.h"
49 #include "driver/firm_opt.h"
50 #include "driver/firm_cmdline.h"
52 static ir_type *ir_type_const_char;
53 static ir_type *ir_type_wchar_t;
54 static ir_type *ir_type_void;
55 static ir_type *ir_type_int;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static label_t **all_labels;
63 static entity_t **inner_functions;
64 static ir_node *ijmp_list;
65 static bool constant_folding;
67 extern bool have_const_functions;
69 static const entity_t *current_function_entity;
70 static ir_node *current_function_name;
71 static ir_node *current_funcsig;
72 static switch_statement_t *current_switch;
73 static ir_graph *current_function;
74 static translation_unit_t *current_translation_unit;
76 static entitymap_t entitymap;
78 static struct obstack asm_obst;
80 typedef enum declaration_kind_t {
81 DECLARATION_KIND_UNKNOWN,
82 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
83 DECLARATION_KIND_GLOBAL_VARIABLE,
84 DECLARATION_KIND_LOCAL_VARIABLE,
85 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
86 DECLARATION_KIND_FUNCTION,
87 DECLARATION_KIND_COMPOUND_MEMBER,
88 DECLARATION_KIND_INNER_FUNCTION
91 static ir_mode *get_ir_mode(type_t *type);
92 static ir_type *get_ir_type_incomplete(type_t *type);
94 static void enqueue_inner_function(entity_t *entity)
96 ARR_APP1(entity_t*, inner_functions, entity);
99 static entity_t *next_inner_function(void)
101 int len = ARR_LEN(inner_functions);
105 entity_t *entity = inner_functions[len-1];
106 ARR_SHRINKLEN(inner_functions, len-1);
111 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
113 const variable_t *variable = get_irg_loc_description(irg, pos);
115 if (variable != NULL) {
116 warningf(&variable->base.base.source_position,
117 "variable '%#T' might be used uninitialized",
118 variable->base.type, variable->base.base.symbol);
120 return new_r_Unknown(irg, mode);
123 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
125 const source_position_t *pos = (const source_position_t*) dbg;
128 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
132 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
134 const source_position_t *pos = (const source_position_t*) dbg;
139 return pos->input_name;
142 static dbg_info *get_dbg_info(const source_position_t *pos)
144 return (dbg_info*) pos;
147 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
149 static ir_mode *mode_int, *mode_uint;
151 static ir_node *_expression_to_firm(const expression_t *expression);
152 static ir_node *expression_to_firm(const expression_t *expression);
153 static void create_local_declaration(entity_t *entity);
155 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
157 unsigned flags = get_atomic_type_flags(kind);
158 unsigned size = get_atomic_type_size(kind);
159 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
160 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
163 unsigned bit_size = size * 8;
164 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
165 ir_mode_arithmetic arithmetic;
167 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
168 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
169 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
171 sort = irms_int_number;
172 arithmetic = irma_twos_complement;
174 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
175 snprintf(name, sizeof(name), "F%u", bit_size);
176 sort = irms_float_number;
177 arithmetic = irma_ieee754;
179 /* note: modulo_shift is 0, as in C it's undefined anyway to shift
180 * a too big amount */
181 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
189 * Initialises the atomic modes depending on the machine size.
191 static void init_atomic_modes(void)
193 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
194 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
196 mode_int = atomic_modes[ATOMIC_TYPE_INT];
197 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
199 /* there's no real void type in firm */
200 atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
202 /* initialize pointer modes */
204 ir_mode_sort sort = irms_reference;
205 unsigned bit_size = machine_size;
207 ir_mode_arithmetic arithmetic = irma_twos_complement;
208 unsigned modulo_shift
209 = bit_size < machine_size ? machine_size : bit_size;
211 snprintf(name, sizeof(name), "p%u", machine_size);
212 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
215 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
216 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
218 /* Hmm, pointers should be machine size */
219 set_modeP_data(ptr_mode);
220 set_modeP_code(ptr_mode);
223 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
225 assert(kind <= ATOMIC_TYPE_LAST);
226 return atomic_modes[kind];
229 static unsigned get_compound_type_size(compound_type_t *type)
231 ir_type *irtype = get_ir_type((type_t*) type);
232 return get_type_size_bytes(irtype);
235 static unsigned get_array_type_size(array_type_t *type)
237 assert(!type->is_vla);
238 ir_type *irtype = get_ir_type((type_t*) type);
239 return get_type_size_bytes(irtype);
242 static unsigned get_type_size_const(type_t *type)
246 panic("error type occurred");
248 return get_atomic_type_size(type->atomic.akind);
250 return 2 * get_atomic_type_size(type->complex.akind);
252 return get_atomic_type_size(type->imaginary.akind);
254 return get_mode_size_bytes(mode_int);
255 case TYPE_COMPOUND_UNION:
256 case TYPE_COMPOUND_STRUCT:
257 return get_compound_type_size(&type->compound);
259 /* just a pointer to the function */
260 return get_mode_size_bytes(mode_P_code);
263 return get_mode_size_bytes(mode_P_data);
265 return get_array_type_size(&type->array);
267 return get_type_size_const(type->builtin.real_type);
269 panic("type size of bitfield request");
275 panic("Trying to determine size of invalid type");
278 static ir_node *get_type_size(type_t *type)
280 type = skip_typeref(type);
282 if (is_type_array(type) && type->array.is_vla) {
283 ir_node *size_node = type->array.size_node;
284 if (size_node == NULL) {
285 size_node = expression_to_firm(type->array.size_expression);
286 assert(!is_Const(size_node));
287 type->array.size_node = size_node;
290 ir_node *elem_size = get_type_size(type->array.element_type);
291 ir_mode *mode = get_irn_mode(size_node);
292 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
296 ir_mode *mode = get_ir_mode(type_size_t);
298 sym.type_p = get_ir_type(type);
299 return new_SymConst(mode, sym, symconst_type_size);
302 static unsigned count_parameters(const function_type_t *function_type)
306 function_parameter_t *parameter = function_type->parameters;
307 for ( ; parameter != NULL; parameter = parameter->next) {
315 * Creates a Firm type for an atomic type
317 static ir_type *create_atomic_type(const atomic_type_t *type)
319 atomic_type_kind_t kind = type->akind;
320 ir_mode *mode = atomic_modes[kind];
321 ident *id = get_mode_ident(mode);
322 ir_type *irtype = new_type_primitive(id, mode);
324 set_type_alignment_bytes(irtype, type->base.alignment);
330 * Creates a Firm type for a complex type
332 static ir_type *create_complex_type(const complex_type_t *type)
334 atomic_type_kind_t kind = type->akind;
335 ir_mode *mode = atomic_modes[kind];
336 ident *id = get_mode_ident(mode);
340 /* FIXME: finish the array */
345 * Creates a Firm type for an imaginary type
347 static ir_type *create_imaginary_type(const imaginary_type_t *type)
349 atomic_type_kind_t kind = type->akind;
350 ir_mode *mode = atomic_modes[kind];
351 ident *id = get_mode_ident(mode);
352 ir_type *irtype = new_type_primitive(id, mode);
354 set_type_alignment_bytes(irtype, type->base.alignment);
360 * return type of a parameter (and take transparent union gnu extension into
363 static type_t *get_parameter_type(type_t *type)
365 type = skip_typeref(type);
366 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
367 compound_t *compound = type->compound.compound;
368 type = compound->members.entities->declaration.type;
374 static ir_type *create_method_type(const function_type_t *function_type)
376 type_t *return_type = skip_typeref(function_type->return_type);
378 ident *id = id_unique("functiontype.%u");
379 int n_parameters = count_parameters(function_type);
380 int n_results = return_type == type_void ? 0 : 1;
381 ir_type *irtype = new_type_method(id, n_parameters, n_results);
383 if (return_type != type_void) {
384 ir_type *restype = get_ir_type(return_type);
385 set_method_res_type(irtype, 0, restype);
388 function_parameter_t *parameter = function_type->parameters;
390 for ( ; parameter != NULL; parameter = parameter->next) {
391 type_t *type = get_parameter_type(parameter->type);
392 ir_type *p_irtype = get_ir_type(type);
393 set_method_param_type(irtype, n, p_irtype);
397 if (function_type->variadic || function_type->unspecified_parameters) {
398 set_method_variadicity(irtype, variadicity_variadic);
401 unsigned cc = get_method_calling_convention(irtype);
402 switch (function_type->calling_convention) {
403 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
406 set_method_calling_convention(irtype, SET_CDECL(cc));
410 if (function_type->variadic || function_type->unspecified_parameters)
413 /* only non-variadic function can use stdcall, else use cdecl */
414 set_method_calling_convention(irtype, SET_STDCALL(cc));
418 if (function_type->variadic || function_type->unspecified_parameters)
420 /* only non-variadic function can use fastcall, else use cdecl */
421 set_method_calling_convention(irtype, SET_FASTCALL(cc));
425 /* Hmm, leave default, not accepted by the parser yet. */
432 static ir_type *create_pointer_type(pointer_type_t *type)
434 type_t *points_to = type->points_to;
435 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
436 ir_type *ir_type = new_type_pointer(id_unique("pointer.%u"),
437 ir_points_to, mode_P_data);
442 static ir_type *create_reference_type(reference_type_t *type)
444 type_t *refers_to = type->refers_to;
445 ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
446 ir_type *ir_type = new_type_pointer(id_unique("reference.%u"),
447 ir_refers_to, mode_P_data);
452 static ir_type *create_array_type(array_type_t *type)
454 type_t *element_type = type->element_type;
455 ir_type *ir_element_type = get_ir_type(element_type);
457 ident *id = id_unique("array.%u");
458 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
460 const int align = get_type_alignment_bytes(ir_element_type);
461 set_type_alignment_bytes(ir_type, align);
463 if (type->size_constant) {
464 int n_elements = type->size;
466 set_array_bounds_int(ir_type, 0, 0, n_elements);
468 size_t elemsize = get_type_size_bytes(ir_element_type);
469 if (elemsize % align > 0) {
470 elemsize += align - (elemsize % align);
472 set_type_size_bytes(ir_type, n_elements * elemsize);
474 set_array_lower_bound_int(ir_type, 0, 0);
476 set_type_state(ir_type, layout_fixed);
482 * Return the signed integer type of size bits.
484 * @param size the size
486 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
489 static ir_mode *s_modes[64 + 1] = {NULL, };
493 if (size <= 0 || size > 64)
496 mode = s_modes[size];
500 snprintf(name, sizeof(name), "bf_I%u", size);
501 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
502 size <= 32 ? 32 : size );
503 s_modes[size] = mode;
507 snprintf(name, sizeof(name), "I%u", size);
508 ident *id = new_id_from_str(name);
509 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
510 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
511 set_primitive_base_type(res, base_tp);
517 * Return the unsigned integer type of size bits.
519 * @param size the size
521 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
524 static ir_mode *u_modes[64 + 1] = {NULL, };
528 if (size <= 0 || size > 64)
531 mode = u_modes[size];
535 snprintf(name, sizeof(name), "bf_U%u", size);
536 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
537 size <= 32 ? 32 : size );
538 u_modes[size] = mode;
543 snprintf(name, sizeof(name), "U%u", size);
544 ident *id = new_id_from_str(name);
545 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
546 res = new_d_type_primitive(id_mangle_u(get_type_ident(base_tp), id), mode, dbgi);
547 set_primitive_base_type(res, base_tp);
552 static ir_type *create_bitfield_type(bitfield_type_t *const type)
554 type_t *base = skip_typeref(type->base_type);
555 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
556 ir_type *irbase = get_ir_type(base);
558 unsigned size = type->bit_size;
560 assert(!is_type_float(base));
561 if (is_type_signed(base)) {
562 return get_signed_int_type_for_bit_size(irbase, size);
564 return get_unsigned_int_type_for_bit_size(irbase, size);
568 #define INVALID_TYPE ((ir_type_ptr)-1)
571 COMPOUND_IS_STRUCT = false,
572 COMPOUND_IS_UNION = true
576 * Construct firm type from ast struct type.
578 * As anonymous inner structs get flattened to a single firm type, we might get
579 * irtype, outer_offset and out_align passed (they represent the position of
580 * the anonymous inner struct inside the resulting firm struct)
582 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
583 size_t *outer_offset, size_t *outer_align,
584 bool incomplete, bool is_union)
586 compound_t *compound = type->compound;
588 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
589 return compound->irtype;
592 size_t align_all = 1;
594 size_t bit_offset = 0;
597 if (irtype == NULL) {
598 symbol_t *symbol = compound->base.symbol;
600 if (symbol != NULL) {
601 id = new_id_from_str(symbol->string);
604 id = id_unique("__anonymous_union.%u");
606 id = id_unique("__anonymous_struct.%u");
609 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
612 irtype = new_d_type_union(id, dbgi);
614 irtype = new_d_type_struct(id, dbgi);
617 compound->irtype_complete = false;
618 compound->irtype = irtype;
620 offset = *outer_offset;
621 align_all = *outer_align;
627 compound->irtype_complete = true;
629 entity_t *entry = compound->members.entities;
630 for ( ; entry != NULL; entry = entry->base.next) {
631 if (entry->kind != ENTITY_COMPOUND_MEMBER)
634 size_t prev_offset = offset;
636 symbol_t *symbol = entry->base.symbol;
637 type_t *entry_type = skip_typeref(entry->declaration.type);
638 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
641 if (symbol != NULL) {
642 ident = new_id_from_str(symbol->string);
644 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
645 create_compound_type(&entry_type->compound, irtype, &offset,
646 &align_all, false, COMPOUND_IS_STRUCT);
647 goto finished_member;
648 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
649 create_compound_type(&entry_type->compound, irtype, &offset,
650 &align_all, false, COMPOUND_IS_UNION);
651 goto finished_member;
653 assert(entry_type->kind == TYPE_BITFIELD);
655 ident = id_unique("anon.%u");
658 ir_type *base_irtype;
659 if (entry_type->kind == TYPE_BITFIELD) {
660 base_irtype = get_ir_type(entry_type->bitfield.base_type);
662 base_irtype = get_ir_type(entry_type);
665 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
666 size_t misalign = offset % entry_alignment;
668 ir_type *entry_irtype = get_ir_type(entry_type);
669 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
672 size_t bits_remainder;
673 if (entry_type->kind == TYPE_BITFIELD) {
674 size_t size_bits = entry_type->bitfield.bit_size;
675 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
677 if (size_bits > rest_size_bits) {
678 /* start a new bucket */
679 offset += entry_alignment - misalign;
685 /* put into current bucket */
686 base = offset - misalign;
687 bits_remainder = misalign * 8 + bit_offset;
690 offset += size_bits / 8;
691 bit_offset = bit_offset + (size_bits % 8);
693 size_t entry_size = get_type_size_bytes(base_irtype);
694 if (misalign > 0 || bit_offset > 0)
695 offset += entry_alignment - misalign;
699 offset += entry_size;
703 if (entry_alignment > align_all) {
704 if (entry_alignment % align_all != 0) {
705 panic("uneven alignments not supported yet");
707 align_all = entry_alignment;
710 set_entity_offset(entity, base);
711 set_entity_offset_bits_remainder(entity,
712 (unsigned char) bits_remainder);
713 //add_struct_member(irtype, entity);
714 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
715 assert(entry->compound_member.entity == NULL);
716 entry->compound_member.entity = entity;
720 size_t entry_size = offset - prev_offset;
721 if (entry_size > size) {
733 size_t misalign = offset % align_all;
734 if (misalign > 0 || bit_offset > 0) {
735 size += align_all - misalign;
738 if (outer_offset != NULL) {
740 *outer_offset = offset;
742 *outer_offset += size;
745 if (align_all > *outer_align) {
746 if (align_all % *outer_align != 0) {
747 panic("uneven alignments not supported yet");
749 *outer_align = align_all;
752 set_type_alignment_bytes(irtype, align_all);
753 set_type_size_bytes(irtype, size);
754 set_type_state(irtype, layout_fixed);
760 static ir_type *create_enum_type(enum_type_t *const type)
762 type->base.firm_type = ir_type_int;
764 ir_mode *const mode = mode_int;
765 tarval *const one = get_mode_one(mode);
766 tarval * tv_next = get_tarval_null(mode);
768 bool constant_folding_old = constant_folding;
769 constant_folding = true;
771 enum_t *enume = type->enume;
772 entity_t *entry = enume->base.next;
773 for (; entry != NULL; entry = entry->base.next) {
774 if (entry->kind != ENTITY_ENUM_VALUE)
777 expression_t *const init = entry->enum_value.value;
779 ir_node *const cnst = expression_to_firm(init);
780 if (!is_Const(cnst)) {
781 panic("couldn't fold constant");
783 tv_next = get_Const_tarval(cnst);
785 entry->enum_value.tv = tv_next;
786 tv_next = tarval_add(tv_next, one);
789 constant_folding = constant_folding_old;
794 static ir_type *get_ir_type_incomplete(type_t *type)
796 assert(type != NULL);
797 type = skip_typeref(type);
799 if (type->base.firm_type != NULL) {
800 assert(type->base.firm_type != INVALID_TYPE);
801 return type->base.firm_type;
804 switch (type->kind) {
805 case TYPE_COMPOUND_STRUCT:
806 return create_compound_type(&type->compound, NULL, NULL, NULL,
807 true, COMPOUND_IS_STRUCT);
808 case TYPE_COMPOUND_UNION:
809 return create_compound_type(&type->compound, NULL, NULL, NULL,
810 true, COMPOUND_IS_UNION);
812 return get_ir_type(type);
816 ir_type *get_ir_type(type_t *type)
818 assert(type != NULL);
820 type = skip_typeref(type);
822 if (type->base.firm_type != NULL) {
823 assert(type->base.firm_type != INVALID_TYPE);
824 return type->base.firm_type;
827 ir_type *firm_type = NULL;
828 switch (type->kind) {
830 /* Happens while constant folding, when there was an error */
831 return create_atomic_type(&type_void->atomic);
834 firm_type = create_atomic_type(&type->atomic);
837 firm_type = create_complex_type(&type->complex);
840 firm_type = create_imaginary_type(&type->imaginary);
843 firm_type = create_method_type(&type->function);
846 firm_type = create_pointer_type(&type->pointer);
849 firm_type = create_reference_type(&type->reference);
852 firm_type = create_array_type(&type->array);
854 case TYPE_COMPOUND_STRUCT:
855 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
856 false, COMPOUND_IS_STRUCT);
858 case TYPE_COMPOUND_UNION:
859 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
860 false, COMPOUND_IS_UNION);
863 firm_type = create_enum_type(&type->enumt);
866 firm_type = get_ir_type(type->builtin.real_type);
869 firm_type = create_bitfield_type(&type->bitfield);
877 if (firm_type == NULL)
878 panic("unknown type found");
880 type->base.firm_type = firm_type;
884 ir_mode *get_ir_mode(type_t *type)
886 ir_type *irtype = get_ir_type(type);
888 /* firm doesn't report a mode for arrays somehow... */
889 if (is_Array_type(irtype)) {
893 ir_mode *mode = get_type_mode(irtype);
894 assert(mode != NULL);
898 /** Names of the runtime functions. */
899 static const struct {
900 int id; /**< the rts id */
901 int n_res; /**< number of return values */
902 const char *name; /**< the name of the rts function */
903 int n_params; /**< number of parameters */
904 unsigned flags; /**< language flags */
906 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
907 { rts_abort, 0, "abort", 0, _C89 },
908 { rts_alloca, 1, "alloca", 1, _ALL },
909 { rts_abs, 1, "abs", 1, _C89 },
910 { rts_labs, 1, "labs", 1, _C89 },
911 { rts_llabs, 1, "llabs", 1, _C99 },
912 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
914 { rts_fabs, 1, "fabs", 1, _C89 },
915 { rts_sqrt, 1, "sqrt", 1, _C89 },
916 { rts_cbrt, 1, "cbrt", 1, _C99 },
917 { rts_exp, 1, "exp", 1, _C89 },
918 { rts_exp2, 1, "exp2", 1, _C89 },
919 { rts_exp10, 1, "exp10", 1, _GNUC },
920 { rts_log, 1, "log", 1, _C89 },
921 { rts_log2, 1, "log2", 1, _C89 },
922 { rts_log10, 1, "log10", 1, _C89 },
923 { rts_pow, 1, "pow", 2, _C89 },
924 { rts_sin, 1, "sin", 1, _C89 },
925 { rts_cos, 1, "cos", 1, _C89 },
926 { rts_tan, 1, "tan", 1, _C89 },
927 { rts_asin, 1, "asin", 1, _C89 },
928 { rts_acos, 1, "acos", 1, _C89 },
929 { rts_atan, 1, "atan", 1, _C89 },
930 { rts_sinh, 1, "sinh", 1, _C89 },
931 { rts_cosh, 1, "cosh", 1, _C89 },
932 { rts_tanh, 1, "tanh", 1, _C89 },
934 { rts_fabsf, 1, "fabsf", 1, _C99 },
935 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
936 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
937 { rts_expf, 1, "expf", 1, _C99 },
938 { rts_exp2f, 1, "exp2f", 1, _C99 },
939 { rts_exp10f, 1, "exp10f", 1, _GNUC },
940 { rts_logf, 1, "logf", 1, _C99 },
941 { rts_log2f, 1, "log2f", 1, _C99 },
942 { rts_log10f, 1, "log10f", 1, _C99 },
943 { rts_powf, 1, "powf", 2, _C99 },
944 { rts_sinf, 1, "sinf", 1, _C99 },
945 { rts_cosf, 1, "cosf", 1, _C99 },
946 { rts_tanf, 1, "tanf", 1, _C99 },
947 { rts_asinf, 1, "asinf", 1, _C99 },
948 { rts_acosf, 1, "acosf", 1, _C99 },
949 { rts_atanf, 1, "atanf", 1, _C99 },
950 { rts_sinhf, 1, "sinhf", 1, _C99 },
951 { rts_coshf, 1, "coshf", 1, _C99 },
952 { rts_tanhf, 1, "tanhf", 1, _C99 },
954 { rts_fabsl, 1, "fabsl", 1, _C99 },
955 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
956 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
957 { rts_expl, 1, "expl", 1, _C99 },
958 { rts_exp2l, 1, "exp2l", 1, _C99 },
959 { rts_exp10l, 1, "exp10l", 1, _GNUC },
960 { rts_logl, 1, "logl", 1, _C99 },
961 { rts_log2l, 1, "log2l", 1, _C99 },
962 { rts_log10l, 1, "log10l", 1, _C99 },
963 { rts_powl, 1, "powl", 2, _C99 },
964 { rts_sinl, 1, "sinl", 1, _C99 },
965 { rts_cosl, 1, "cosl", 1, _C99 },
966 { rts_tanl, 1, "tanl", 1, _C99 },
967 { rts_asinl, 1, "asinl", 1, _C99 },
968 { rts_acosl, 1, "acosl", 1, _C99 },
969 { rts_atanl, 1, "atanl", 1, _C99 },
970 { rts_sinhl, 1, "sinhl", 1, _C99 },
971 { rts_coshl, 1, "coshl", 1, _C99 },
972 { rts_tanhl, 1, "tanhl", 1, _C99 },
974 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
975 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
976 { rts_strcmp, 1, "strcmp", 2, _C89 },
977 { rts_strncmp, 1, "strncmp", 3, _C89 }
980 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
982 static ident* (*create_ld_ident)(entity_t*) = create_name_linux_elf;
985 * Handle GNU attributes for entities
987 * @param ent the entity
988 * @param decl the routine declaration
990 static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
992 assert(is_declaration(entity));
993 decl_modifiers_t modifiers = entity->declaration.modifiers;
994 if (modifiers & DM_PURE) {
995 /* TRUE if the declaration includes the GNU
996 __attribute__((pure)) specifier. */
997 set_entity_additional_property(irentity, mtp_property_pure);
999 if (modifiers & DM_CONST) {
1000 set_entity_additional_property(irentity, mtp_property_const);
1001 have_const_functions = true;
1003 if (modifiers & DM_USED) {
1004 /* TRUE if the declaration includes the GNU
1005 __attribute__((used)) specifier. */
1006 set_entity_stickyness(irentity, stickyness_sticky);
1010 static bool is_main(entity_t *entity)
1012 static symbol_t *sym_main = NULL;
1013 if (sym_main == NULL) {
1014 sym_main = symbol_table_insert("main");
1017 if (entity->base.symbol != sym_main)
1019 /* must be in outermost scope */
1020 if (entity->base.parent_scope != ¤t_translation_unit->scope)
1027 * Creates an entity representing a function.
1029 * @param declaration the function declaration
1031 static ir_entity *get_function_entity(entity_t *entity)
1033 assert(entity->kind == ENTITY_FUNCTION);
1034 if (entity->function.entity != NULL) {
1035 return entity->function.entity;
1038 if (is_main(entity)) {
1039 /* force main to C linkage */
1040 type_t *type = entity->declaration.type;
1041 assert(is_type_function(type));
1042 if (type->function.linkage != LINKAGE_C) {
1043 type_t *new_type = duplicate_type(type);
1044 new_type->function.linkage = LINKAGE_C;
1046 type = typehash_insert(new_type);
1047 if (type != new_type) {
1048 obstack_free(type_obst, new_type);
1050 entity->declaration.type = type;
1054 symbol_t *symbol = entity->base.symbol;
1055 ident *id = new_id_from_str(symbol->string);
1057 ir_type *global_type = get_glob_type();
1058 ir_type *ir_type_method = get_ir_type(entity->declaration.type);
1059 bool const has_body = entity->function.statement != NULL;
1061 /* already an entity defined? */
1062 ir_entity *irentity = entitymap_get(&entitymap, symbol);
1063 if (irentity != NULL) {
1064 if (get_entity_visibility(irentity) == visibility_external_allocated
1066 set_entity_visibility(irentity, visibility_external_visible);
1068 goto entity_created;
1071 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
1072 irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
1073 set_entity_ld_ident(irentity, create_ld_ident(entity));
1075 handle_gnu_attributes_ent(irentity, entity);
1077 /* static inline => local
1078 * extern inline => local
1079 * inline without definition => local
1080 * inline with definition => external_visible */
1081 storage_class_tag_t const storage_class
1082 = (storage_class_tag_t) entity->declaration.storage_class;
1083 bool const is_inline = entity->function.is_inline;
1084 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1085 set_entity_visibility(irentity, visibility_external_visible);
1086 } else if (storage_class == STORAGE_CLASS_STATIC ||
1087 (is_inline && has_body)) {
1089 /* this entity was declared, but is defined nowhere */
1090 set_entity_peculiarity(irentity, peculiarity_description);
1092 set_entity_visibility(irentity, visibility_local);
1093 } else if (has_body) {
1094 set_entity_visibility(irentity, visibility_external_visible);
1096 set_entity_visibility(irentity, visibility_external_allocated);
1098 set_entity_allocation(irentity, allocation_static);
1100 /* We should check for file scope here, but as long as we compile C only
1101 this is not needed. */
1102 if (! firm_opt.freestanding) {
1103 /* check for a known runtime function */
1104 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1105 if (id != rts_idents[i])
1108 /* ignore those rts functions not necessary needed for current mode */
1109 if ((c_mode & rts_data[i].flags) == 0)
1111 assert(rts_entities[rts_data[i].id] == NULL);
1112 rts_entities[rts_data[i].id] = irentity;
1116 entitymap_insert(&entitymap, symbol, irentity);
1119 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1120 entity->function.entity = irentity;
1126 * Creates a Const node representing a constant.
1128 static ir_node *const_to_firm(const const_expression_t *cnst)
1130 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1131 ir_mode *mode = get_ir_mode(cnst->base.type);
1136 if (mode_is_float(mode)) {
1137 tv = new_tarval_from_double(cnst->v.float_value, mode);
1139 if (mode_is_signed(mode)) {
1140 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1142 len = snprintf(buf, sizeof(buf), "%llu",
1143 (unsigned long long) cnst->v.int_value);
1145 tv = new_tarval_from_str(buf, len, mode);
1148 return new_d_Const(dbgi, mode, tv);
1152 * Creates a Const node representing a character constant.
1154 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1156 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1157 ir_mode *mode = get_ir_mode(cnst->base.type);
1159 long long int v = 0;
1160 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1161 if (char_is_signed) {
1162 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1164 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1168 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1169 tarval *tv = new_tarval_from_str(buf, len, mode);
1171 return new_d_Const(dbgi, mode, tv);
1175 * Creates a Const node representing a wide character constant.
1177 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1179 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1180 ir_mode *mode = get_ir_mode(cnst->base.type);
1182 long long int v = cnst->v.wide_character.begin[0];
1185 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1186 tarval *tv = new_tarval_from_str(buf, len, mode);
1188 return new_d_Const(dbgi, mode, tv);
1192 * Creates a SymConst for a given entity.
1194 * @param dbgi debug info
1195 * @param mode the (reference) mode for the SymConst
1196 * @param entity the entity
1198 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1201 assert(entity != NULL);
1202 union symconst_symbol sym;
1203 sym.entity_p = entity;
1204 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1208 * Creates a SymConst node representing a string constant.
1210 * @param src_pos the source position of the string constant
1211 * @param id_prefix a prefix for the name of the generated string constant
1212 * @param value the value of the string constant
1214 static ir_node *string_to_firm(const source_position_t *const src_pos,
1215 const char *const id_prefix,
1216 const string_t *const value)
1218 ir_type *const global_type = get_glob_type();
1219 dbg_info *const dbgi = get_dbg_info(src_pos);
1220 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1221 ir_type_const_char, dbgi);
1223 ident *const id = id_unique(id_prefix);
1224 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1225 set_entity_ld_ident(entity, id);
1226 set_entity_variability(entity, variability_constant);
1227 set_entity_allocation(entity, allocation_static);
1229 ir_type *const elem_type = ir_type_const_char;
1230 ir_mode *const mode = get_type_mode(elem_type);
1232 const char* const string = value->begin;
1233 const size_t slen = value->size;
1235 set_array_lower_bound_int(type, 0, 0);
1236 set_array_upper_bound_int(type, 0, slen);
1237 set_type_size_bytes(type, slen);
1238 set_type_state(type, layout_fixed);
1240 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1241 for (size_t i = 0; i < slen; ++i) {
1242 tvs[i] = new_tarval_from_long(string[i], mode);
1245 set_array_entity_values(entity, tvs, slen);
1248 return create_symconst(dbgi, mode_P_data, entity);
1252 * Creates a SymConst node representing a string literal.
1254 * @param literal the string literal
1256 static ir_node *string_literal_to_firm(
1257 const string_literal_expression_t* literal)
1259 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1264 * Creates a SymConst node representing a wide string literal.
1266 * @param literal the wide string literal
1268 static ir_node *wide_string_literal_to_firm(
1269 const wide_string_literal_expression_t* const literal)
1271 ir_type *const global_type = get_glob_type();
1272 ir_type *const elem_type = ir_type_wchar_t;
1273 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1274 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1277 ident *const id = id_unique("Lstr.%u");
1278 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1279 set_entity_ld_ident(entity, id);
1280 set_entity_variability(entity, variability_constant);
1281 set_entity_allocation(entity, allocation_static);
1283 ir_mode *const mode = get_type_mode(elem_type);
1285 const wchar_rep_t *const string = literal->value.begin;
1286 const size_t slen = literal->value.size;
1288 set_array_lower_bound_int(type, 0, 0);
1289 set_array_upper_bound_int(type, 0, slen);
1290 set_type_size_bytes(type, slen);
1291 set_type_state(type, layout_fixed);
1293 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1294 for (size_t i = 0; i < slen; ++i) {
1295 tvs[i] = new_tarval_from_long(string[i], mode);
1298 set_array_entity_values(entity, tvs, slen);
1301 return create_symconst(dbgi, mode_P_data, entity);
1304 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1305 ir_node *const addr)
1307 ir_type *irtype = get_ir_type(type);
1308 if (is_compound_type(irtype)
1309 || is_Method_type(irtype)
1310 || is_Array_type(irtype)) {
1314 ir_mode *const mode = get_type_mode(irtype);
1315 ir_node *const memory = get_store();
1316 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1317 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1318 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1320 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1321 set_Load_volatility(load, volatility_is_volatile);
1324 set_store(load_mem);
1329 * Creates a strict Conv if neccessary.
1331 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1333 ir_mode *mode = get_irn_mode(node);
1335 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1337 if (!mode_is_float(mode))
1340 /* check if there is already a Conv */
1341 if (is_Conv(node)) {
1342 /* convert it into a strict Conv */
1343 set_Conv_strict(node, 1);
1347 /* otherwise create a new one */
1348 return new_d_strictConv(dbgi, node, mode);
1351 static ir_node *get_global_var_address(dbg_info *const dbgi,
1352 const entity_t *const entity)
1354 assert(entity->kind == ENTITY_VARIABLE);
1355 assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1357 ir_entity *const irentity = entity->variable.v.entity;
1358 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1359 case STORAGE_CLASS_THREAD:
1360 case STORAGE_CLASS_THREAD_EXTERN:
1361 case STORAGE_CLASS_THREAD_STATIC: {
1362 ir_node *const no_mem = new_NoMem();
1363 ir_node *const tls = get_irg_tls(current_ir_graph);
1364 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1368 return create_symconst(dbgi, mode_P_data, irentity);
1373 * Returns the correct base address depending on whether it is a parameter or a
1374 * normal local variable.
1376 static ir_node *get_local_frame(ir_entity *const ent)
1378 ir_graph *const irg = current_ir_graph;
1379 const ir_type *const owner = get_entity_owner(ent);
1380 if (owner == get_irg_frame_type(irg)) {
1381 return get_irg_frame(irg);
1383 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1384 return get_irg_value_param_base(irg);
1388 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1390 ir_mode *value_mode = get_irn_mode(value);
1392 if (value_mode == dest_mode || is_Bad(value))
1395 if (dest_mode == mode_b) {
1396 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1397 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1398 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1402 return new_d_Conv(dbgi, value, dest_mode);
1406 * Keep all memory edges of the given block.
1408 static void keep_all_memory(ir_node *block) {
1409 ir_node *old = get_cur_block();
1411 set_cur_block(block);
1412 keep_alive(get_store());
1413 /* TODO: keep all memory edges from restricted pointers */
1417 static ir_node *reference_expression_enum_value_to_firm(
1418 const reference_expression_t *ref)
1420 entity_t *entity = ref->entity;
1421 type_t *type = skip_typeref(entity->enum_value.enum_type);
1422 /* make sure the type is constructed */
1423 (void) get_ir_type(type);
1425 ir_mode *const mode = get_ir_mode(type);
1426 return new_Const(mode, entity->enum_value.tv);
1429 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1431 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1432 entity_t *entity = ref->entity;
1433 assert(is_declaration(entity));
1434 type_t *type = skip_typeref(entity->declaration.type);
1436 /* make sure the type is constructed */
1437 (void) get_ir_type(type);
1439 switch ((declaration_kind_t) entity->declaration.kind) {
1440 case DECLARATION_KIND_UNKNOWN:
1443 case DECLARATION_KIND_LOCAL_VARIABLE: {
1444 ir_mode *const mode = get_ir_mode(type);
1445 return get_value(entity->variable.v.value_number, mode);
1447 case DECLARATION_KIND_FUNCTION: {
1448 ir_mode *const mode = get_ir_mode(type);
1449 return create_symconst(dbgi, mode, entity->function.entity);
1451 case DECLARATION_KIND_INNER_FUNCTION: {
1452 ir_mode *const mode = get_ir_mode(type);
1453 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1454 /* inner function not using the closure */
1455 return create_symconst(dbgi, mode, entity->function.entity);
1457 /* TODO: need trampoline here */
1458 panic("Trampoline code not implemented");
1459 return create_symconst(dbgi, mode, entity->function.entity);
1462 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1463 ir_node *const addr = get_global_var_address(dbgi, entity);
1464 return deref_address(dbgi, entity->declaration.type, addr);
1467 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1468 ir_entity *irentity = entity->variable.v.entity;
1469 ir_node *frame = get_local_frame(irentity);
1470 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1471 return deref_address(dbgi, entity->declaration.type, sel);
1474 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1475 return entity->variable.v.vla_base;
1477 case DECLARATION_KIND_COMPOUND_MEMBER:
1478 panic("not implemented reference type");
1481 panic("reference to declaration with unknown type found");
1484 static ir_node *reference_addr(const reference_expression_t *ref)
1486 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1487 entity_t *entity = ref->entity;
1488 assert(is_declaration(entity));
1490 switch((declaration_kind_t) entity->declaration.kind) {
1491 case DECLARATION_KIND_UNKNOWN:
1493 case DECLARATION_KIND_LOCAL_VARIABLE:
1494 /* you can store to a local variable (so we don't panic but return NULL
1495 * as an indicator for no real address) */
1497 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1498 ir_node *const addr = get_global_var_address(dbgi, entity);
1501 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1502 ir_entity *irentity = entity->variable.v.entity;
1503 ir_node *frame = get_local_frame(irentity);
1504 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1509 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1510 return entity->variable.v.vla_base;
1512 case DECLARATION_KIND_FUNCTION: {
1513 type_t *const type = skip_typeref(entity->declaration.type);
1514 ir_mode *const mode = get_ir_mode(type);
1515 return create_symconst(dbgi, mode, entity->function.entity);
1518 case DECLARATION_KIND_INNER_FUNCTION:
1519 case DECLARATION_KIND_COMPOUND_MEMBER:
1520 panic("not implemented reference type");
1523 panic("reference to declaration with unknown type found");
1527 * Transform calls to builtin functions.
1529 static ir_node *process_builtin_call(const call_expression_t *call)
1531 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1533 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1534 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1536 type_t *type = skip_typeref(builtin->base.type);
1537 assert(is_type_pointer(type));
1539 type_t *function_type = skip_typeref(type->pointer.points_to);
1540 symbol_t *symbol = builtin->symbol;
1542 switch(symbol->ID) {
1543 case T___builtin_alloca: {
1544 if (call->arguments == NULL || call->arguments->next != NULL) {
1545 panic("invalid number of parameters on __builtin_alloca");
1547 expression_t *argument = call->arguments->expression;
1548 ir_node *size = expression_to_firm(argument);
1550 ir_node *store = get_store();
1551 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1553 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1555 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1560 case T___builtin_huge_val:
1561 case T___builtin_inf:
1562 case T___builtin_inff:
1563 case T___builtin_infl: {
1564 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1565 tarval *tv = get_mode_infinite(mode);
1566 ir_node *res = new_d_Const(dbgi, mode, tv);
1569 case T___builtin_nan:
1570 case T___builtin_nanf:
1571 case T___builtin_nanl: {
1572 /* Ignore string for now... */
1573 assert(is_type_function(function_type));
1574 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1575 tarval *tv = get_mode_NAN(mode);
1576 ir_node *res = new_d_Const(dbgi, mode, tv);
1579 case T___builtin_va_end:
1582 panic("Unsupported builtin found\n");
1587 * Transform a call expression.
1588 * Handles some special cases, like alloca() calls, which must be resolved
1589 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1590 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1593 static ir_node *call_expression_to_firm(const call_expression_t *call)
1595 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1596 assert(get_cur_block() != NULL);
1598 expression_t *function = call->function;
1599 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1600 return process_builtin_call(call);
1602 if (function->kind == EXPR_REFERENCE) {
1603 const reference_expression_t *ref = &function->reference;
1604 entity_t *entity = ref->entity;
1606 if (entity->kind == ENTITY_FUNCTION
1607 && entity->function.entity == rts_entities[rts_alloca]) {
1608 /* handle alloca() call */
1609 expression_t *argument = call->arguments->expression;
1610 ir_node *size = expression_to_firm(argument);
1612 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1614 ir_node *store = get_store();
1615 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1616 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1618 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1620 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1625 ir_node *callee = expression_to_firm(function);
1627 type_t *type = skip_typeref(function->base.type);
1628 assert(is_type_pointer(type));
1629 pointer_type_t *pointer_type = &type->pointer;
1630 type_t *points_to = skip_typeref(pointer_type->points_to);
1631 assert(is_type_function(points_to));
1632 function_type_t *function_type = &points_to->function;
1634 int n_parameters = 0;
1635 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1636 ir_type *new_method_type = NULL;
1637 if (function_type->variadic || function_type->unspecified_parameters) {
1638 const call_argument_t *argument = call->arguments;
1639 for ( ; argument != NULL; argument = argument->next) {
1643 /* we need to construct a new method type matching the call
1645 int n_res = get_method_n_ress(ir_method_type);
1646 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1647 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1648 n_parameters, n_res, dbgi);
1649 set_method_calling_convention(new_method_type,
1650 get_method_calling_convention(ir_method_type));
1651 set_method_additional_properties(new_method_type,
1652 get_method_additional_properties(ir_method_type));
1653 set_method_variadicity(new_method_type,
1654 get_method_variadicity(ir_method_type));
1656 for (int i = 0; i < n_res; ++i) {
1657 set_method_res_type(new_method_type, i,
1658 get_method_res_type(ir_method_type, i));
1660 argument = call->arguments;
1661 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1662 expression_t *expression = argument->expression;
1663 ir_type *irtype = get_ir_type(expression->base.type);
1664 set_method_param_type(new_method_type, i, irtype);
1666 ir_method_type = new_method_type;
1668 n_parameters = get_method_n_params(ir_method_type);
1671 ir_node *in[n_parameters];
1673 const call_argument_t *argument = call->arguments;
1674 for (int n = 0; n < n_parameters; ++n) {
1675 expression_t *expression = argument->expression;
1676 ir_node *arg_node = expression_to_firm(expression);
1678 arg_node = do_strict_conv(dbgi, arg_node);
1682 argument = argument->next;
1685 ir_node *store = get_store();
1686 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1688 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1691 type_t *return_type = skip_typeref(function_type->return_type);
1692 ir_node *result = NULL;
1694 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1696 if (is_type_scalar(return_type)) {
1697 mode = get_ir_mode(return_type);
1701 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1702 result = new_d_Proj(dbgi, resproj, mode, 0);
1705 if (function->kind == EXPR_REFERENCE &&
1706 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1707 /* A dead end: Keep the Call and the Block. Also place all further
1708 * nodes into a new and unreachable block. */
1710 keep_alive(get_cur_block());
1717 static void statement_to_firm(statement_t *statement);
1718 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1720 static ir_node *expression_to_addr(const expression_t *expression);
1721 static ir_node *create_condition_evaluation(const expression_t *expression,
1722 ir_node *true_block,
1723 ir_node *false_block);
1725 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1728 value = do_strict_conv(dbgi, value);
1730 ir_node *memory = get_store();
1732 if (is_type_scalar(type)) {
1733 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1734 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1735 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1736 set_Store_volatility(store, volatility_is_volatile);
1737 set_store(store_mem);
1739 ir_type *irtype = get_ir_type(type);
1740 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1741 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1742 set_store(copyb_mem);
1746 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1748 tarval *all_one = get_mode_all_one(mode);
1749 int mode_size = get_mode_size_bits(mode);
1751 assert(offset >= 0);
1753 assert(offset + size <= mode_size);
1754 if (size == mode_size) {
1758 long shiftr = get_mode_size_bits(mode) - size;
1759 long shiftl = offset;
1760 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1761 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1762 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1763 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1768 static void bitfield_store_to_firm(dbg_info *dbgi,
1769 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1771 ir_type *entity_type = get_entity_type(entity);
1772 ir_type *base_type = get_primitive_base_type(entity_type);
1773 assert(base_type != NULL);
1774 ir_mode *mode = get_type_mode(base_type);
1776 value = create_conv(dbgi, value, mode);
1778 /* kill upper bits of value and shift to right position */
1779 int bitoffset = get_entity_offset_bits_remainder(entity);
1780 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1782 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1783 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1784 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1785 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1786 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1787 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1789 /* load current value */
1790 ir_node *mem = get_store();
1791 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1792 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1793 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1794 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1795 tarval *inv_mask = tarval_not(shift_mask);
1796 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1797 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1799 /* construct new value and store */
1800 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1801 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1802 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1803 set_store(store_mem);
1806 set_Load_volatility(load, volatility_is_volatile);
1807 set_Store_volatility(store, volatility_is_volatile);
1811 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1814 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1815 type_t *type = expression->base.type;
1816 ir_mode *mode = get_ir_mode(type);
1817 ir_node *mem = get_store();
1818 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1819 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1820 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1822 load_res = create_conv(dbgi, load_res, mode_int);
1824 set_store(load_mem);
1826 /* kill upper bits */
1827 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1828 ir_entity *entity = expression->compound_entry->compound_member.entity;
1829 int bitoffset = get_entity_offset_bits_remainder(entity);
1830 ir_type *entity_type = get_entity_type(entity);
1831 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1832 long shift_bitsl = machine_size - bitoffset - bitsize;
1833 assert(shift_bitsl >= 0);
1834 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1835 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1836 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1838 long shift_bitsr = bitoffset + shift_bitsl;
1839 assert(shift_bitsr <= (long) machine_size);
1840 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1841 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1843 if (mode_is_signed(mode)) {
1844 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1846 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1849 return create_conv(dbgi, shiftr, mode);
1852 /* make sure the selected compound type is constructed */
1853 static void construct_select_compound(const select_expression_t *expression)
1855 type_t *type = skip_typeref(expression->compound->base.type);
1856 if (is_type_pointer(type)) {
1857 type = type->pointer.points_to;
1859 (void) get_ir_type(type);
1862 static void set_value_for_expression_addr(const expression_t *expression,
1863 ir_node *value, ir_node *addr)
1865 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1866 value = do_strict_conv(dbgi, value);
1868 if (expression->kind == EXPR_REFERENCE) {
1869 const reference_expression_t *ref = &expression->reference;
1871 entity_t *entity = ref->entity;
1872 assert(is_declaration(entity));
1873 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1874 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1875 set_value(entity->variable.v.value_number, value);
1881 addr = expression_to_addr(expression);
1883 type_t *type = skip_typeref(expression->base.type);
1885 if (expression->kind == EXPR_SELECT) {
1886 const select_expression_t *select = &expression->select;
1888 construct_select_compound(select);
1890 entity_t *entity = select->compound_entry;
1891 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1892 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1893 ir_entity *irentity = entity->compound_member.entity;
1895 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1896 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1901 assign_value(dbgi, addr, type, value);
1904 static void set_value_for_expression(const expression_t *expression,
1907 set_value_for_expression_addr(expression, value, NULL);
1910 static ir_node *get_value_from_lvalue(const expression_t *expression,
1913 if (expression->kind == EXPR_REFERENCE) {
1914 const reference_expression_t *ref = &expression->reference;
1916 entity_t *entity = ref->entity;
1917 assert(entity->kind == ENTITY_VARIABLE);
1918 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1919 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1920 assert(addr == NULL);
1921 ir_mode *mode = get_ir_mode(expression->base.type);
1922 return get_value(entity->variable.v.value_number, mode);
1926 assert(addr != NULL);
1927 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1930 if (expression->kind == EXPR_SELECT &&
1931 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1932 construct_select_compound(&expression->select);
1933 value = bitfield_extract_to_firm(&expression->select, addr);
1935 value = deref_address(dbgi, expression->base.type, addr);
1942 static ir_node *create_incdec(const unary_expression_t *expression)
1944 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1945 const expression_t *value_expr = expression->value;
1946 ir_node *addr = expression_to_addr(value_expr);
1947 ir_node *value = get_value_from_lvalue(value_expr, addr);
1949 type_t *type = skip_typeref(expression->base.type);
1950 ir_mode *mode = get_ir_mode(expression->base.type);
1953 if (is_type_pointer(type)) {
1954 pointer_type_t *pointer_type = &type->pointer;
1955 offset = get_type_size(pointer_type->points_to);
1957 assert(is_type_arithmetic(type));
1958 offset = new_Const(mode, get_mode_one(mode));
1962 ir_node *store_value;
1963 switch(expression->base.kind) {
1964 case EXPR_UNARY_POSTFIX_INCREMENT:
1966 store_value = new_d_Add(dbgi, value, offset, mode);
1968 case EXPR_UNARY_POSTFIX_DECREMENT:
1970 store_value = new_d_Sub(dbgi, value, offset, mode);
1972 case EXPR_UNARY_PREFIX_INCREMENT:
1973 result = new_d_Add(dbgi, value, offset, mode);
1974 store_value = result;
1976 case EXPR_UNARY_PREFIX_DECREMENT:
1977 result = new_d_Sub(dbgi, value, offset, mode);
1978 store_value = result;
1981 panic("no incdec expr in create_incdec");
1984 set_value_for_expression_addr(value_expr, store_value, addr);
1989 static bool is_local_variable(expression_t *expression)
1991 if (expression->kind != EXPR_REFERENCE)
1993 reference_expression_t *ref_expr = &expression->reference;
1994 entity_t *entity = ref_expr->entity;
1995 if (entity->kind != ENTITY_VARIABLE)
1997 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1998 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2001 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2004 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2005 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2006 case EXPR_BINARY_NOTEQUAL:
2007 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2008 case EXPR_BINARY_ISLESS:
2009 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2010 case EXPR_BINARY_ISLESSEQUAL:
2011 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2012 case EXPR_BINARY_ISGREATER:
2013 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2014 case EXPR_BINARY_ISGREATEREQUAL:
2015 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2016 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2021 panic("trying to get pn_Cmp from non-comparison binexpr type");
2025 * Handle the assume optimizer hint: check if a Confirm
2026 * node can be created.
2028 * @param dbi debug info
2029 * @param expr the IL assume expression
2031 * we support here only some simple cases:
2036 static ir_node *handle_assume_compare(dbg_info *dbi,
2037 const binary_expression_t *expression)
2039 expression_t *op1 = expression->left;
2040 expression_t *op2 = expression->right;
2041 entity_t *var2, *var = NULL;
2042 ir_node *res = NULL;
2045 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2047 if (is_local_variable(op1) && is_local_variable(op2)) {
2048 var = op1->reference.entity;
2049 var2 = op2->reference.entity;
2051 type_t *const type = skip_typeref(var->declaration.type);
2052 ir_mode *const mode = get_ir_mode(type);
2054 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2055 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2057 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2058 set_value(var2->variable.v.value_number, res);
2060 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2061 set_value(var->variable.v.value_number, res);
2067 if (is_local_variable(op1) && is_constant_expression(op2)) {
2068 var = op1->reference.entity;
2070 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2071 cmp_val = get_inversed_pnc(cmp_val);
2072 var = op2->reference.entity;
2077 type_t *const type = skip_typeref(var->declaration.type);
2078 ir_mode *const mode = get_ir_mode(type);
2080 res = get_value(var->variable.v.value_number, mode);
2081 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2082 set_value(var->variable.v.value_number, res);
2088 * Handle the assume optimizer hint.
2090 * @param dbi debug info
2091 * @param expr the IL assume expression
2093 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2094 switch(expression->kind) {
2095 case EXPR_BINARY_EQUAL:
2096 case EXPR_BINARY_NOTEQUAL:
2097 case EXPR_BINARY_LESS:
2098 case EXPR_BINARY_LESSEQUAL:
2099 case EXPR_BINARY_GREATER:
2100 case EXPR_BINARY_GREATEREQUAL:
2101 return handle_assume_compare(dbi, &expression->binary);
2107 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2109 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2110 type_t *type = skip_typeref(expression->base.type);
2112 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2113 return expression_to_addr(expression->value);
2115 const expression_t *value = expression->value;
2117 switch(expression->base.kind) {
2118 case EXPR_UNARY_NEGATE: {
2119 ir_node *value_node = expression_to_firm(value);
2120 ir_mode *mode = get_ir_mode(type);
2121 return new_d_Minus(dbgi, value_node, mode);
2123 case EXPR_UNARY_PLUS:
2124 return expression_to_firm(value);
2125 case EXPR_UNARY_BITWISE_NEGATE: {
2126 ir_node *value_node = expression_to_firm(value);
2127 ir_mode *mode = get_ir_mode(type);
2128 return new_d_Not(dbgi, value_node, mode);
2130 case EXPR_UNARY_NOT: {
2131 ir_node *value_node = _expression_to_firm(value);
2132 value_node = create_conv(dbgi, value_node, mode_b);
2133 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2136 case EXPR_UNARY_DEREFERENCE: {
2137 ir_node *value_node = expression_to_firm(value);
2138 type_t *value_type = skip_typeref(value->base.type);
2139 assert(is_type_pointer(value_type));
2140 type_t *points_to = value_type->pointer.points_to;
2141 return deref_address(dbgi, points_to, value_node);
2143 case EXPR_UNARY_POSTFIX_INCREMENT:
2144 case EXPR_UNARY_POSTFIX_DECREMENT:
2145 case EXPR_UNARY_PREFIX_INCREMENT:
2146 case EXPR_UNARY_PREFIX_DECREMENT:
2147 return create_incdec(expression);
2148 case EXPR_UNARY_CAST: {
2149 ir_node *value_node = expression_to_firm(value);
2150 if (is_type_scalar(type)) {
2151 ir_mode *mode = get_ir_mode(type);
2152 ir_node *node = create_conv(dbgi, value_node, mode);
2153 node = do_strict_conv(dbgi, node);
2156 /* make sure firm type is constructed */
2157 (void) get_ir_type(type);
2161 case EXPR_UNARY_CAST_IMPLICIT: {
2162 ir_node *value_node = expression_to_firm(value);
2163 if (is_type_scalar(type)) {
2164 ir_mode *mode = get_ir_mode(type);
2165 return create_conv(dbgi, value_node, mode);
2170 case EXPR_UNARY_ASSUME:
2171 if (firm_opt.confirm)
2172 return handle_assume(dbgi, value);
2179 panic("invalid UNEXPR type found");
2183 * produces a 0/1 depending of the value of a mode_b node
2185 static ir_node *produce_condition_result(const expression_t *expression,
2188 ir_mode *mode = get_ir_mode(expression->base.type);
2189 ir_node *cur_block = get_cur_block();
2191 ir_node *one_block = new_immBlock();
2192 ir_node *one = new_Const(mode, get_mode_one(mode));
2193 ir_node *jmp_one = new_d_Jmp(dbgi);
2195 ir_node *zero_block = new_immBlock();
2196 ir_node *zero = new_Const(mode, get_mode_null(mode));
2197 ir_node *jmp_zero = new_d_Jmp(dbgi);
2199 set_cur_block(cur_block);
2200 create_condition_evaluation(expression, one_block, zero_block);
2201 mature_immBlock(one_block);
2202 mature_immBlock(zero_block);
2204 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2205 new_Block(2, in_cf);
2207 ir_node *in[2] = { one, zero };
2208 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2213 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2214 ir_node *value, type_t *type)
2216 pointer_type_t *const pointer_type = &type->pointer;
2217 type_t *const points_to = skip_typeref(pointer_type->points_to);
2218 unsigned elem_size = get_type_size_const(points_to);
2220 /* gcc extension: allow arithmetic with void * and function * */
2221 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2222 is_type_function(points_to)) {
2226 assert(elem_size >= 1);
2230 value = create_conv(dbgi, value, mode_int);
2231 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2232 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2236 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2237 ir_node *left, ir_node *right)
2240 type_t *type_left = skip_typeref(expression->left->base.type);
2241 type_t *type_right = skip_typeref(expression->right->base.type);
2243 expression_kind_t kind = expression->base.kind;
2246 case EXPR_BINARY_SHIFTLEFT:
2247 case EXPR_BINARY_SHIFTRIGHT:
2248 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2249 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2250 mode = get_irn_mode(left);
2251 right = create_conv(dbgi, right, mode_uint);
2254 case EXPR_BINARY_SUB:
2255 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2256 const pointer_type_t *const ptr_type = &type_left->pointer;
2258 mode = get_ir_mode(expression->base.type);
2259 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2260 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2261 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2262 ir_node *const no_mem = new_NoMem();
2263 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2264 mode, op_pin_state_floats);
2265 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2268 case EXPR_BINARY_SUB_ASSIGN:
2269 if (is_type_pointer(type_left)) {
2270 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2271 mode = get_ir_mode(type_left);
2276 case EXPR_BINARY_ADD:
2277 case EXPR_BINARY_ADD_ASSIGN:
2278 if (is_type_pointer(type_left)) {
2279 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2280 mode = get_ir_mode(type_left);
2282 } else if (is_type_pointer(type_right)) {
2283 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2284 mode = get_ir_mode(type_right);
2291 mode = get_irn_mode(right);
2292 left = create_conv(dbgi, left, mode);
2297 case EXPR_BINARY_ADD_ASSIGN:
2298 case EXPR_BINARY_ADD:
2299 return new_d_Add(dbgi, left, right, mode);
2300 case EXPR_BINARY_SUB_ASSIGN:
2301 case EXPR_BINARY_SUB:
2302 return new_d_Sub(dbgi, left, right, mode);
2303 case EXPR_BINARY_MUL_ASSIGN:
2304 case EXPR_BINARY_MUL:
2305 return new_d_Mul(dbgi, left, right, mode);
2306 case EXPR_BINARY_BITWISE_AND:
2307 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2308 return new_d_And(dbgi, left, right, mode);
2309 case EXPR_BINARY_BITWISE_OR:
2310 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2311 return new_d_Or(dbgi, left, right, mode);
2312 case EXPR_BINARY_BITWISE_XOR:
2313 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2314 return new_d_Eor(dbgi, left, right, mode);
2315 case EXPR_BINARY_SHIFTLEFT:
2316 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2317 return new_d_Shl(dbgi, left, right, mode);
2318 case EXPR_BINARY_SHIFTRIGHT:
2319 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2320 if (mode_is_signed(mode)) {
2321 return new_d_Shrs(dbgi, left, right, mode);
2323 return new_d_Shr(dbgi, left, right, mode);
2325 case EXPR_BINARY_DIV:
2326 case EXPR_BINARY_DIV_ASSIGN: {
2327 ir_node *pin = new_Pin(new_NoMem());
2330 if (mode_is_float(mode)) {
2331 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2332 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2334 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2335 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2339 case EXPR_BINARY_MOD:
2340 case EXPR_BINARY_MOD_ASSIGN: {
2341 ir_node *pin = new_Pin(new_NoMem());
2342 assert(!mode_is_float(mode));
2343 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2344 op_pin_state_floats);
2345 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2349 panic("unexpected expression kind");
2353 static ir_node *create_lazy_op(const binary_expression_t *expression)
2355 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2356 type_t *type = expression->base.type;
2357 ir_mode *mode = get_ir_mode(type);
2359 if (is_constant_expression(expression->left)) {
2360 long val = fold_constant(expression->left);
2361 expression_kind_t ekind = expression->base.kind;
2362 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2363 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2364 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2365 return expression_to_firm(expression->right);
2367 return new_Const(mode, get_mode_one(mode));
2371 return produce_condition_result((const expression_t*) expression, dbgi);
2374 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2375 ir_node *right, ir_mode *mode);
2377 static ir_node *create_assign_binop(const binary_expression_t *expression)
2379 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2380 const expression_t *left_expr = expression->left;
2381 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2382 ir_node *right = expression_to_firm(expression->right);
2383 ir_node *left_addr = expression_to_addr(left_expr);
2384 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2385 ir_node *result = create_op(dbgi, expression, left, right);
2387 result = create_conv(dbgi, result, left_mode);
2388 result = do_strict_conv(dbgi, result);
2390 set_value_for_expression_addr(left_expr, result, left_addr);
2395 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2397 expression_kind_t kind = expression->base.kind;
2400 case EXPR_BINARY_EQUAL:
2401 case EXPR_BINARY_NOTEQUAL:
2402 case EXPR_BINARY_LESS:
2403 case EXPR_BINARY_LESSEQUAL:
2404 case EXPR_BINARY_GREATER:
2405 case EXPR_BINARY_GREATEREQUAL:
2406 case EXPR_BINARY_ISGREATER:
2407 case EXPR_BINARY_ISGREATEREQUAL:
2408 case EXPR_BINARY_ISLESS:
2409 case EXPR_BINARY_ISLESSEQUAL:
2410 case EXPR_BINARY_ISLESSGREATER:
2411 case EXPR_BINARY_ISUNORDERED: {
2412 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2413 ir_node *left = expression_to_firm(expression->left);
2414 ir_node *right = expression_to_firm(expression->right);
2415 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2416 long pnc = get_pnc(kind, expression->left->base.type);
2417 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2420 case EXPR_BINARY_ASSIGN: {
2421 ir_node *addr = expression_to_addr(expression->left);
2422 ir_node *right = expression_to_firm(expression->right);
2423 set_value_for_expression_addr(expression->left, right, addr);
2427 case EXPR_BINARY_ADD:
2428 case EXPR_BINARY_SUB:
2429 case EXPR_BINARY_MUL:
2430 case EXPR_BINARY_DIV:
2431 case EXPR_BINARY_MOD:
2432 case EXPR_BINARY_BITWISE_AND:
2433 case EXPR_BINARY_BITWISE_OR:
2434 case EXPR_BINARY_BITWISE_XOR:
2435 case EXPR_BINARY_SHIFTLEFT:
2436 case EXPR_BINARY_SHIFTRIGHT:
2438 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2439 ir_node *left = expression_to_firm(expression->left);
2440 ir_node *right = expression_to_firm(expression->right);
2441 return create_op(dbgi, expression, left, right);
2443 case EXPR_BINARY_LOGICAL_AND:
2444 case EXPR_BINARY_LOGICAL_OR:
2445 return create_lazy_op(expression);
2446 case EXPR_BINARY_COMMA:
2447 /* create side effects of left side */
2448 (void) expression_to_firm(expression->left);
2449 return _expression_to_firm(expression->right);
2451 case EXPR_BINARY_ADD_ASSIGN:
2452 case EXPR_BINARY_SUB_ASSIGN:
2453 case EXPR_BINARY_MUL_ASSIGN:
2454 case EXPR_BINARY_MOD_ASSIGN:
2455 case EXPR_BINARY_DIV_ASSIGN:
2456 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2457 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2458 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2459 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2460 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2461 return create_assign_binop(expression);
2462 case EXPR_BINARY_BUILTIN_EXPECT:
2463 return _expression_to_firm(expression->left);
2465 panic("TODO binexpr type");
2469 static ir_node *array_access_addr(const array_access_expression_t *expression)
2471 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2472 ir_node *base_addr = expression_to_firm(expression->array_ref);
2473 ir_node *offset = expression_to_firm(expression->index);
2475 type_t *offset_type = skip_typeref(expression->index->base.type);
2477 if (is_type_signed(offset_type)) {
2478 mode = get_ir_mode(type_ssize_t);
2480 mode = get_ir_mode(type_size_t);
2482 offset = create_conv(dbgi, offset, mode);
2484 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2485 assert(is_type_pointer(ref_type));
2486 pointer_type_t *pointer_type = &ref_type->pointer;
2488 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2489 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2490 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2492 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2497 static ir_node *array_access_to_firm(
2498 const array_access_expression_t *expression)
2500 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2501 ir_node *addr = array_access_addr(expression);
2502 type_t *type = revert_automatic_type_conversion(
2503 (const expression_t*) expression);
2504 type = skip_typeref(type);
2506 return deref_address(dbgi, type, addr);
2509 static long get_offsetof_offset(const offsetof_expression_t *expression)
2511 type_t *orig_type = expression->type;
2514 designator_t *designator = expression->designator;
2515 for ( ; designator != NULL; designator = designator->next) {
2516 type_t *type = skip_typeref(orig_type);
2517 /* be sure the type is constructed */
2518 (void) get_ir_type(type);
2520 if (designator->symbol != NULL) {
2521 assert(is_type_compound(type));
2522 symbol_t *symbol = designator->symbol;
2524 compound_t *compound = type->compound.compound;
2525 entity_t *iter = compound->members.entities;
2526 for ( ; iter != NULL; iter = iter->base.next) {
2527 if (iter->base.symbol == symbol) {
2531 assert(iter != NULL);
2533 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2534 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2535 offset += get_entity_offset(iter->compound_member.entity);
2537 orig_type = iter->declaration.type;
2539 expression_t *array_index = designator->array_index;
2540 assert(designator->array_index != NULL);
2541 assert(is_type_array(type));
2543 long index = fold_constant(array_index);
2544 ir_type *arr_type = get_ir_type(type);
2545 ir_type *elem_type = get_array_element_type(arr_type);
2546 long elem_size = get_type_size_bytes(elem_type);
2548 offset += index * elem_size;
2550 orig_type = type->array.element_type;
2557 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2559 ir_mode *mode = get_ir_mode(expression->base.type);
2560 long offset = get_offsetof_offset(expression);
2561 tarval *tv = new_tarval_from_long(offset, mode);
2562 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2564 return new_d_Const(dbgi, mode, tv);
2567 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2568 ir_entity *entity, type_t *type);
2570 static ir_node *compound_literal_to_firm(
2571 const compound_literal_expression_t *expression)
2573 type_t *type = expression->type;
2575 /* create an entity on the stack */
2576 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2578 ident *const id = id_unique("CompLit.%u");
2579 ir_type *const irtype = get_ir_type(type);
2580 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2581 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2582 set_entity_ld_ident(entity, id);
2584 set_entity_variability(entity, variability_uninitialized);
2586 /* create initialisation code */
2587 initializer_t *initializer = expression->initializer;
2588 create_local_initializer(initializer, dbgi, entity, type);
2590 /* create a sel for the compound literal address */
2591 ir_node *frame = get_local_frame(entity);
2592 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2597 * Transform a sizeof expression into Firm code.
2599 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2601 type_t *type = expression->type;
2603 type = expression->tp_expression->base.type;
2604 assert(type != NULL);
2607 type = skip_typeref(type);
2608 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2609 if (is_type_array(type) && type->array.is_vla
2610 && expression->tp_expression != NULL) {
2611 expression_to_firm(expression->tp_expression);
2614 return get_type_size(type);
2618 * Transform an alignof expression into Firm code.
2620 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2622 type_t *type = expression->type;
2624 /* beware: if expression is a variable reference, return the
2625 alignment of the variable. */
2626 const expression_t *tp_expression = expression->tp_expression;
2627 const entity_t *entity = expression_is_variable(tp_expression);
2628 if (entity != NULL) {
2629 /* TODO: get the alignment of this variable. */
2632 type = tp_expression->base.type;
2633 assert(type != NULL);
2636 ir_mode *const mode = get_ir_mode(expression->base.type);
2637 symconst_symbol sym;
2638 sym.type_p = get_ir_type(type);
2639 return new_SymConst(mode, sym, symconst_type_align);
2642 static void init_ir_types(void);
2644 long fold_constant(const expression_t *expression)
2646 assert(is_type_valid(skip_typeref(expression->base.type)));
2648 bool constant_folding_old = constant_folding;
2649 constant_folding = true;
2653 assert(is_constant_expression(expression));
2655 ir_graph *old_current_ir_graph = current_ir_graph;
2656 if (current_ir_graph == NULL) {
2657 current_ir_graph = get_const_code_irg();
2660 ir_node *cnst = expression_to_firm(expression);
2661 current_ir_graph = old_current_ir_graph;
2663 if (!is_Const(cnst)) {
2664 panic("couldn't fold constant\n");
2667 tarval *tv = get_Const_tarval(cnst);
2668 if (!tarval_is_long(tv)) {
2669 panic("result of constant folding is not integer\n");
2672 constant_folding = constant_folding_old;
2674 return get_tarval_long(tv);
2677 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2679 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2681 /* first try to fold a constant condition */
2682 if (is_constant_expression(expression->condition)) {
2683 long val = fold_constant(expression->condition);
2685 expression_t *true_expression = expression->true_expression;
2686 if (true_expression == NULL)
2687 true_expression = expression->condition;
2688 return expression_to_firm(true_expression);
2690 return expression_to_firm(expression->false_expression);
2694 ir_node *cur_block = get_cur_block();
2696 /* create the true block */
2697 ir_node *true_block = new_immBlock();
2699 ir_node *true_val = expression->true_expression != NULL ?
2700 expression_to_firm(expression->true_expression) : NULL;
2701 ir_node *true_jmp = new_Jmp();
2703 /* create the false block */
2704 ir_node *false_block = new_immBlock();
2706 ir_node *false_val = expression_to_firm(expression->false_expression);
2707 ir_node *false_jmp = new_Jmp();
2709 /* create the condition evaluation */
2710 set_cur_block(cur_block);
2711 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2712 if (expression->true_expression == NULL) {
2713 if (cond_expr != NULL) {
2714 true_val = cond_expr;
2716 /* Condition ended with a short circuit (&&, ||, !) operation.
2717 * Generate a "1" as value for the true branch. */
2718 ir_mode *const mode = mode_Is;
2719 true_val = new_Const(mode, get_mode_one(mode));
2722 mature_immBlock(true_block);
2723 mature_immBlock(false_block);
2725 /* create the common block */
2726 ir_node *in_cf[2] = { true_jmp, false_jmp };
2727 new_Block(2, in_cf);
2729 /* TODO improve static semantics, so either both or no values are NULL */
2730 if (true_val == NULL || false_val == NULL)
2733 ir_node *in[2] = { true_val, false_val };
2734 ir_mode *mode = get_irn_mode(true_val);
2735 assert(get_irn_mode(false_val) == mode);
2736 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2742 * Returns an IR-node representing the address of a field.
2744 static ir_node *select_addr(const select_expression_t *expression)
2746 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2748 construct_select_compound(expression);
2750 ir_node *compound_addr = expression_to_firm(expression->compound);
2752 entity_t *entry = expression->compound_entry;
2753 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2754 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2755 ir_entity *irentity = entry->compound_member.entity;
2757 assert(irentity != NULL);
2759 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2764 static ir_node *select_to_firm(const select_expression_t *expression)
2766 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2767 ir_node *addr = select_addr(expression);
2768 type_t *type = revert_automatic_type_conversion(
2769 (const expression_t*) expression);
2770 type = skip_typeref(type);
2772 entity_t *entry = expression->compound_entry;
2773 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2774 type_t *entry_type = skip_typeref(entry->declaration.type);
2776 if (entry_type->kind == TYPE_BITFIELD) {
2777 return bitfield_extract_to_firm(expression, addr);
2780 return deref_address(dbgi, type, addr);
2783 /* Values returned by __builtin_classify_type. */
2784 typedef enum gcc_type_class
2790 enumeral_type_class,
2793 reference_type_class,
2797 function_type_class,
2808 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2810 type_t *type = expr->type_expression->base.type;
2812 /* FIXME gcc returns different values depending on whether compiling C or C++
2813 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
2816 type = skip_typeref(type);
2817 switch (type->kind) {
2819 const atomic_type_t *const atomic_type = &type->atomic;
2820 switch (atomic_type->akind) {
2821 /* should not be reached */
2822 case ATOMIC_TYPE_INVALID:
2826 /* gcc cannot do that */
2827 case ATOMIC_TYPE_VOID:
2828 tc = void_type_class;
2831 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2832 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2833 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2834 case ATOMIC_TYPE_SHORT:
2835 case ATOMIC_TYPE_USHORT:
2836 case ATOMIC_TYPE_INT:
2837 case ATOMIC_TYPE_UINT:
2838 case ATOMIC_TYPE_LONG:
2839 case ATOMIC_TYPE_ULONG:
2840 case ATOMIC_TYPE_LONGLONG:
2841 case ATOMIC_TYPE_ULONGLONG:
2842 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2843 tc = integer_type_class;
2846 case ATOMIC_TYPE_FLOAT:
2847 case ATOMIC_TYPE_DOUBLE:
2848 case ATOMIC_TYPE_LONG_DOUBLE:
2849 tc = real_type_class;
2852 panic("Unexpected atomic type in classify_type_to_firm().");
2855 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2856 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2857 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2858 case TYPE_ARRAY: /* gcc handles this as pointer */
2859 case TYPE_FUNCTION: /* gcc handles this as pointer */
2860 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2861 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2862 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2864 /* gcc handles this as integer */
2865 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2867 /* gcc classifies the referenced type */
2868 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
2871 /* typedef/typeof should be skipped already */
2878 panic("unexpected TYPE classify_type_to_firm().");
2882 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2883 ir_mode *const mode = mode_int;
2884 tarval *const tv = new_tarval_from_long(tc, mode);
2885 return new_d_Const(dbgi, mode, tv);
2888 static ir_node *function_name_to_firm(
2889 const funcname_expression_t *const expr)
2891 switch(expr->kind) {
2892 case FUNCNAME_FUNCTION:
2893 case FUNCNAME_PRETTY_FUNCTION:
2894 case FUNCNAME_FUNCDNAME:
2895 if (current_function_name == NULL) {
2896 const source_position_t *const src_pos = &expr->base.source_position;
2897 const char *name = current_function_entity->base.symbol->string;
2898 const string_t string = { name, strlen(name) + 1 };
2899 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2901 return current_function_name;
2902 case FUNCNAME_FUNCSIG:
2903 if (current_funcsig == NULL) {
2904 const source_position_t *const src_pos = &expr->base.source_position;
2905 ir_entity *ent = get_irg_entity(current_ir_graph);
2906 const char *const name = get_entity_ld_name(ent);
2907 const string_t string = { name, strlen(name) + 1 };
2908 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2910 return current_funcsig;
2912 panic("Unsupported function name");
2915 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2917 statement_t *statement = expr->statement;
2919 assert(statement->kind == STATEMENT_COMPOUND);
2920 return compound_statement_to_firm(&statement->compound);
2923 static ir_node *va_start_expression_to_firm(
2924 const va_start_expression_t *const expr)
2926 type_t *const type = current_function_entity->declaration.type;
2927 ir_type *const method_type = get_ir_type(type);
2928 int const n = get_method_n_params(method_type) - 1;
2929 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2930 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2931 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2932 ir_node *const no_mem = new_NoMem();
2933 ir_node *const arg_sel =
2934 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2936 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2937 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2938 set_value_for_expression(expr->ap, add);
2943 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2945 type_t *const type = expr->base.type;
2946 expression_t *const ap_expr = expr->ap;
2947 ir_node *const ap_addr = expression_to_addr(ap_expr);
2948 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2949 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2950 ir_node *const res = deref_address(dbgi, type, ap);
2952 ir_node *const cnst = get_type_size(expr->base.type);
2953 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2955 set_value_for_expression_addr(ap_expr, add, ap_addr);
2960 static ir_node *dereference_addr(const unary_expression_t *const expression)
2962 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2963 return expression_to_firm(expression->value);
2967 * Returns a IR-node representing an lvalue of the given expression.
2969 static ir_node *expression_to_addr(const expression_t *expression)
2971 switch(expression->kind) {
2972 case EXPR_REFERENCE:
2973 return reference_addr(&expression->reference);
2974 case EXPR_ARRAY_ACCESS:
2975 return array_access_addr(&expression->array_access);
2977 return select_addr(&expression->select);
2979 return call_expression_to_firm(&expression->call);
2980 case EXPR_UNARY_DEREFERENCE: {
2981 return dereference_addr(&expression->unary);
2986 panic("trying to get address of non-lvalue");
2989 static ir_node *builtin_constant_to_firm(
2990 const builtin_constant_expression_t *expression)
2992 ir_mode *mode = get_ir_mode(expression->base.type);
2995 if (is_constant_expression(expression->value)) {
3000 return new_Const_long(mode, v);
3003 static ir_node *builtin_prefetch_to_firm(
3004 const builtin_prefetch_expression_t *expression)
3006 ir_node *adr = expression_to_firm(expression->adr);
3007 /* no Firm support for prefetch yet */
3012 static ir_node *get_label_block(label_t *label)
3014 if (label->block != NULL)
3015 return label->block;
3017 /* beware: might be called from create initializer with current_ir_graph
3018 * set to const_code_irg. */
3019 ir_graph *rem = current_ir_graph;
3020 current_ir_graph = current_function;
3022 ir_node *old_cur_block = get_cur_block();
3023 ir_node *block = new_immBlock();
3024 set_cur_block(old_cur_block);
3026 label->block = block;
3028 ARR_APP1(label_t *, all_labels, label);
3030 current_ir_graph = rem;
3035 * Pointer to a label. This is used for the
3036 * GNU address-of-label extension.
3038 static ir_node *label_address_to_firm(
3039 const label_address_expression_t *label)
3041 ir_node *block = get_label_block(label->label);
3042 ir_label_t nr = get_Block_label(block);
3045 nr = get_irp_next_label_nr();
3046 set_Block_label(block, nr);
3048 symconst_symbol value;
3050 return new_SymConst(mode_P_code, value, symconst_label);
3054 * creates firm nodes for an expression. The difference between this function
3055 * and expression_to_firm is, that this version might produce mode_b nodes
3056 * instead of mode_Is.
3058 static ir_node *_expression_to_firm(const expression_t *expression)
3061 if (!constant_folding) {
3062 assert(!expression->base.transformed);
3063 ((expression_t*) expression)->base.transformed = true;
3067 switch (expression->kind) {
3068 case EXPR_CHARACTER_CONSTANT:
3069 return character_constant_to_firm(&expression->conste);
3070 case EXPR_WIDE_CHARACTER_CONSTANT:
3071 return wide_character_constant_to_firm(&expression->conste);
3073 return const_to_firm(&expression->conste);
3074 case EXPR_STRING_LITERAL:
3075 return string_literal_to_firm(&expression->string);
3076 case EXPR_WIDE_STRING_LITERAL:
3077 return wide_string_literal_to_firm(&expression->wide_string);
3078 case EXPR_REFERENCE:
3079 return reference_expression_to_firm(&expression->reference);
3080 case EXPR_REFERENCE_ENUM_VALUE:
3081 return reference_expression_enum_value_to_firm(&expression->reference);
3083 return call_expression_to_firm(&expression->call);
3085 return unary_expression_to_firm(&expression->unary);
3087 return binary_expression_to_firm(&expression->binary);
3088 case EXPR_ARRAY_ACCESS:
3089 return array_access_to_firm(&expression->array_access);
3091 return sizeof_to_firm(&expression->typeprop);
3093 return alignof_to_firm(&expression->typeprop);
3094 case EXPR_CONDITIONAL:
3095 return conditional_to_firm(&expression->conditional);
3097 return select_to_firm(&expression->select);
3098 case EXPR_CLASSIFY_TYPE:
3099 return classify_type_to_firm(&expression->classify_type);
3101 return function_name_to_firm(&expression->funcname);
3102 case EXPR_STATEMENT:
3103 return statement_expression_to_firm(&expression->statement);
3105 return va_start_expression_to_firm(&expression->va_starte);
3107 return va_arg_expression_to_firm(&expression->va_arge);
3108 case EXPR_BUILTIN_SYMBOL:
3109 panic("unimplemented expression found");
3110 case EXPR_BUILTIN_CONSTANT_P:
3111 return builtin_constant_to_firm(&expression->builtin_constant);
3112 case EXPR_BUILTIN_PREFETCH:
3113 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3115 return offsetof_to_firm(&expression->offsetofe);
3116 case EXPR_COMPOUND_LITERAL:
3117 return compound_literal_to_firm(&expression->compound_literal);
3118 case EXPR_LABEL_ADDRESS:
3119 return label_address_to_firm(&expression->label_address);
3125 panic("invalid expression found");
3128 static bool produces_mode_b(const expression_t *expression)
3130 switch (expression->kind) {
3131 case EXPR_BINARY_EQUAL:
3132 case EXPR_BINARY_NOTEQUAL:
3133 case EXPR_BINARY_LESS:
3134 case EXPR_BINARY_LESSEQUAL:
3135 case EXPR_BINARY_GREATER:
3136 case EXPR_BINARY_GREATEREQUAL:
3137 case EXPR_BINARY_ISGREATER:
3138 case EXPR_BINARY_ISGREATEREQUAL:
3139 case EXPR_BINARY_ISLESS:
3140 case EXPR_BINARY_ISLESSEQUAL:
3141 case EXPR_BINARY_ISLESSGREATER:
3142 case EXPR_BINARY_ISUNORDERED:
3143 case EXPR_UNARY_NOT:
3146 case EXPR_BINARY_BUILTIN_EXPECT:
3147 return produces_mode_b(expression->binary.left);
3148 case EXPR_BINARY_COMMA:
3149 return produces_mode_b(expression->binary.right);
3156 static ir_node *expression_to_firm(const expression_t *expression)
3158 if (!produces_mode_b(expression)) {
3159 ir_node *res = _expression_to_firm(expression);
3160 assert(res == NULL || get_irn_mode(res) != mode_b);
3164 if (is_constant_expression(expression)) {
3165 ir_node *res = _expression_to_firm(expression);
3166 ir_mode *mode = get_ir_mode(expression->base.type);
3167 assert(is_Const(res));
3168 if (is_Const_null(res)) {
3169 return new_Const_long(mode, 0);
3171 return new_Const_long(mode, 1);
3175 /* we have to produce a 0/1 from the mode_b expression */
3176 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3177 return produce_condition_result(expression, dbgi);
3181 * create a short-circuit expression evaluation that tries to construct
3182 * efficient control flow structures for &&, || and ! expressions
3184 static ir_node *create_condition_evaluation(const expression_t *expression,
3185 ir_node *true_block,
3186 ir_node *false_block)
3188 switch(expression->kind) {
3189 case EXPR_UNARY_NOT: {
3190 const unary_expression_t *unary_expression = &expression->unary;
3191 create_condition_evaluation(unary_expression->value, false_block,
3195 case EXPR_BINARY_LOGICAL_AND: {
3196 const binary_expression_t *binary_expression = &expression->binary;
3198 ir_node *cur_block = get_cur_block();
3199 ir_node *extra_block = new_immBlock();
3200 set_cur_block(cur_block);
3201 create_condition_evaluation(binary_expression->left, extra_block,
3203 mature_immBlock(extra_block);
3204 set_cur_block(extra_block);
3205 create_condition_evaluation(binary_expression->right, true_block,
3209 case EXPR_BINARY_LOGICAL_OR: {
3210 const binary_expression_t *binary_expression = &expression->binary;
3212 ir_node *cur_block = get_cur_block();
3213 ir_node *extra_block = new_immBlock();
3214 set_cur_block(cur_block);
3215 create_condition_evaluation(binary_expression->left, true_block,
3217 mature_immBlock(extra_block);
3218 set_cur_block(extra_block);
3219 create_condition_evaluation(binary_expression->right, true_block,
3227 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3228 ir_node *cond_expr = _expression_to_firm(expression);
3229 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3230 ir_node *cond = new_d_Cond(dbgi, condition);
3231 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3232 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3234 /* set branch prediction info based on __builtin_expect */
3235 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3236 long cnst = fold_constant(expression->binary.right);
3237 cond_jmp_predicate pred;
3240 pred = COND_JMP_PRED_FALSE;
3242 pred = COND_JMP_PRED_TRUE;
3244 set_Cond_jmp_pred(cond, pred);
3247 add_immBlock_pred(true_block, true_proj);
3248 if (false_block != NULL) {
3249 add_immBlock_pred(false_block, false_proj);
3252 set_cur_block(NULL);
3257 static void create_variable_entity(entity_t *variable,
3258 declaration_kind_t declaration_kind,
3259 ir_type *parent_type)
3261 assert(variable->kind == ENTITY_VARIABLE);
3262 type_t *const type = skip_typeref(variable->declaration.type);
3263 ident *const id = new_id_from_str(variable->base.symbol->string);
3264 ir_type *const irtype = get_ir_type(type);
3265 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3266 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3268 handle_gnu_attributes_ent(irentity, variable);
3270 variable->declaration.kind = (unsigned char) declaration_kind;
3271 variable->variable.v.entity = irentity;
3272 set_entity_variability(irentity, variability_uninitialized);
3273 set_entity_ld_ident(irentity, create_ld_ident(variable));
3274 if (parent_type == get_tls_type())
3275 set_entity_allocation(irentity, allocation_automatic);
3276 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3277 set_entity_allocation(irentity, allocation_static);
3279 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3280 set_entity_volatility(irentity, volatility_is_volatile);
3285 typedef struct type_path_entry_t type_path_entry_t;
3286 struct type_path_entry_t {
3288 ir_initializer_t *initializer;
3290 entity_t *compound_entry;
3293 typedef struct type_path_t type_path_t;
3294 struct type_path_t {
3295 type_path_entry_t *path;
3300 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3302 size_t len = ARR_LEN(path->path);
3304 for (size_t i = 0; i < len; ++i) {
3305 const type_path_entry_t *entry = & path->path[i];
3307 type_t *type = skip_typeref(entry->type);
3308 if (is_type_compound(type)) {
3309 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3310 } else if (is_type_array(type)) {
3311 fprintf(stderr, "[%u]", (unsigned) entry->index);
3313 fprintf(stderr, "-INVALID-");
3316 fprintf(stderr, " (");
3317 print_type(path->top_type);
3318 fprintf(stderr, ")");
3321 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3323 size_t len = ARR_LEN(path->path);
3325 return & path->path[len-1];
3328 static type_path_entry_t *append_to_type_path(type_path_t *path)
3330 size_t len = ARR_LEN(path->path);
3331 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3333 type_path_entry_t *result = & path->path[len];
3334 memset(result, 0, sizeof(result[0]));
3338 static size_t get_compound_member_count(const compound_type_t *type)
3340 compound_t *compound = type->compound;
3341 size_t n_members = 0;
3342 entity_t *member = compound->members.entities;
3343 for ( ; member != NULL; member = member->base.next) {
3350 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3352 type_t *orig_top_type = path->top_type;
3353 type_t *top_type = skip_typeref(orig_top_type);
3355 assert(is_type_compound(top_type) || is_type_array(top_type));
3357 if (ARR_LEN(path->path) == 0) {
3360 type_path_entry_t *top = get_type_path_top(path);
3361 ir_initializer_t *initializer = top->initializer;
3362 return get_initializer_compound_value(initializer, top->index);
3366 static void descend_into_subtype(type_path_t *path)
3368 type_t *orig_top_type = path->top_type;
3369 type_t *top_type = skip_typeref(orig_top_type);
3371 assert(is_type_compound(top_type) || is_type_array(top_type));
3373 ir_initializer_t *initializer = get_initializer_entry(path);
3375 type_path_entry_t *top = append_to_type_path(path);
3376 top->type = top_type;
3380 if (is_type_compound(top_type)) {
3381 compound_t *compound = top_type->compound.compound;
3382 entity_t *entry = compound->members.entities;
3384 top->compound_entry = entry;
3386 len = get_compound_member_count(&top_type->compound);
3387 if (entry != NULL) {
3388 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3389 path->top_type = entry->declaration.type;
3392 assert(is_type_array(top_type));
3393 assert(top_type->array.size > 0);
3396 path->top_type = top_type->array.element_type;
3397 len = top_type->array.size;
3399 if (initializer == NULL
3400 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3401 initializer = create_initializer_compound(len);
3402 /* we have to set the entry at the 2nd latest path entry... */
3403 size_t path_len = ARR_LEN(path->path);
3404 assert(path_len >= 1);
3406 type_path_entry_t *entry = & path->path[path_len-2];
3407 ir_initializer_t *tinitializer = entry->initializer;
3408 set_initializer_compound_value(tinitializer, entry->index,
3412 top->initializer = initializer;
3415 static void ascend_from_subtype(type_path_t *path)
3417 type_path_entry_t *top = get_type_path_top(path);
3419 path->top_type = top->type;
3421 size_t len = ARR_LEN(path->path);
3422 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3425 static void walk_designator(type_path_t *path, const designator_t *designator)
3427 /* designators start at current object type */
3428 ARR_RESIZE(type_path_entry_t, path->path, 1);
3430 for ( ; designator != NULL; designator = designator->next) {
3431 type_path_entry_t *top = get_type_path_top(path);
3432 type_t *orig_type = top->type;
3433 type_t *type = skip_typeref(orig_type);
3435 if (designator->symbol != NULL) {
3436 assert(is_type_compound(type));
3438 symbol_t *symbol = designator->symbol;
3440 compound_t *compound = type->compound.compound;
3441 entity_t *iter = compound->members.entities;
3442 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3443 if (iter->base.symbol == symbol) {
3444 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3448 assert(iter != NULL);
3450 top->type = orig_type;
3451 top->compound_entry = iter;
3453 orig_type = iter->declaration.type;
3455 expression_t *array_index = designator->array_index;
3456 assert(designator->array_index != NULL);
3457 assert(is_type_array(type));
3459 long index = fold_constant(array_index);
3462 if (type->array.size_constant) {
3463 long array_size = type->array.size;
3464 assert(index < array_size);
3468 top->type = orig_type;
3469 top->index = (size_t) index;
3470 orig_type = type->array.element_type;
3472 path->top_type = orig_type;
3474 if (designator->next != NULL) {
3475 descend_into_subtype(path);
3479 path->invalid = false;
3482 static void advance_current_object(type_path_t *path)
3484 if (path->invalid) {
3485 /* TODO: handle this... */
3486 panic("invalid initializer in ast2firm (excessive elements)");
3490 type_path_entry_t *top = get_type_path_top(path);
3492 type_t *type = skip_typeref(top->type);
3493 if (is_type_union(type)) {
3494 top->compound_entry = NULL;
3495 } else if (is_type_struct(type)) {
3496 entity_t *entry = top->compound_entry;
3499 entry = entry->base.next;
3500 top->compound_entry = entry;
3501 if (entry != NULL) {
3502 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3503 path->top_type = entry->declaration.type;
3507 assert(is_type_array(type));
3510 if (!type->array.size_constant || top->index < type->array.size) {
3515 /* we're past the last member of the current sub-aggregate, try if we
3516 * can ascend in the type hierarchy and continue with another subobject */
3517 size_t len = ARR_LEN(path->path);
3520 ascend_from_subtype(path);
3521 advance_current_object(path);
3523 path->invalid = true;
3528 static ir_initializer_t *create_ir_initializer(
3529 const initializer_t *initializer, type_t *type);
3531 static ir_initializer_t *create_ir_initializer_value(
3532 const initializer_value_t *initializer)
3534 if (is_type_compound(initializer->value->base.type)) {
3535 panic("initializer creation for compounds not implemented yet");
3537 ir_node *value = expression_to_firm(initializer->value);
3538 return create_initializer_const(value);
3541 /** test wether type can be initialized by a string constant */
3542 static bool is_string_type(type_t *type)
3545 if (is_type_pointer(type)) {
3546 inner = skip_typeref(type->pointer.points_to);
3547 } else if(is_type_array(type)) {
3548 inner = skip_typeref(type->array.element_type);
3553 return is_type_integer(inner);
3556 static ir_initializer_t *create_ir_initializer_list(
3557 const initializer_list_t *initializer, type_t *type)
3560 memset(&path, 0, sizeof(path));
3561 path.top_type = type;
3562 path.path = NEW_ARR_F(type_path_entry_t, 0);
3564 descend_into_subtype(&path);
3566 for (size_t i = 0; i < initializer->len; ++i) {
3567 const initializer_t *sub_initializer = initializer->initializers[i];
3569 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3570 walk_designator(&path, sub_initializer->designator.designator);
3574 if (sub_initializer->kind == INITIALIZER_VALUE) {
3575 /* we might have to descend into types until we're at a scalar
3578 type_t *orig_top_type = path.top_type;
3579 type_t *top_type = skip_typeref(orig_top_type);
3581 if (is_type_scalar(top_type))
3583 descend_into_subtype(&path);
3585 } else if (sub_initializer->kind == INITIALIZER_STRING
3586 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
3587 /* we might have to descend into types until we're at a scalar
3590 type_t *orig_top_type = path.top_type;
3591 type_t *top_type = skip_typeref(orig_top_type);
3593 if (is_string_type(top_type))
3595 descend_into_subtype(&path);
3599 ir_initializer_t *sub_irinitializer
3600 = create_ir_initializer(sub_initializer, path.top_type);
3602 size_t path_len = ARR_LEN(path.path);
3603 assert(path_len >= 1);
3604 type_path_entry_t *entry = & path.path[path_len-1];
3605 ir_initializer_t *tinitializer = entry->initializer;
3606 set_initializer_compound_value(tinitializer, entry->index,
3609 advance_current_object(&path);
3612 assert(ARR_LEN(path.path) >= 1);
3613 ir_initializer_t *result = path.path[0].initializer;
3614 DEL_ARR_F(path.path);
3619 static ir_initializer_t *create_ir_initializer_string(
3620 const initializer_string_t *initializer, type_t *type)
3622 type = skip_typeref(type);
3624 size_t string_len = initializer->string.size;
3625 assert(type->kind == TYPE_ARRAY);
3626 assert(type->array.size_constant);
3627 size_t len = type->array.size;
3628 ir_initializer_t *irinitializer = create_initializer_compound(len);
3630 const char *string = initializer->string.begin;
3631 ir_mode *mode = get_ir_mode(type->array.element_type);
3633 for (size_t i = 0; i < len; ++i) {
3638 tarval *tv = new_tarval_from_long(c, mode);
3639 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3641 set_initializer_compound_value(irinitializer, i, char_initializer);
3644 return irinitializer;
3647 static ir_initializer_t *create_ir_initializer_wide_string(
3648 const initializer_wide_string_t *initializer, type_t *type)
3650 size_t string_len = initializer->string.size;
3651 assert(type->kind == TYPE_ARRAY);
3652 assert(type->array.size_constant);
3653 size_t len = type->array.size;
3654 ir_initializer_t *irinitializer = create_initializer_compound(len);
3656 const wchar_rep_t *string = initializer->string.begin;
3657 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3659 for (size_t i = 0; i < len; ++i) {
3661 if (i < string_len) {
3664 tarval *tv = new_tarval_from_long(c, mode);
3665 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3667 set_initializer_compound_value(irinitializer, i, char_initializer);
3670 return irinitializer;
3673 static ir_initializer_t *create_ir_initializer(
3674 const initializer_t *initializer, type_t *type)
3676 switch(initializer->kind) {
3677 case INITIALIZER_STRING:
3678 return create_ir_initializer_string(&initializer->string, type);
3680 case INITIALIZER_WIDE_STRING:
3681 return create_ir_initializer_wide_string(&initializer->wide_string,
3684 case INITIALIZER_LIST:
3685 return create_ir_initializer_list(&initializer->list, type);
3687 case INITIALIZER_VALUE:
3688 return create_ir_initializer_value(&initializer->value);
3690 case INITIALIZER_DESIGNATOR:
3691 panic("unexpected designator initializer found");
3693 panic("unknown initializer");
3696 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3699 if (is_atomic_type(type)) {
3700 ir_mode *mode = get_type_mode(type);
3701 tarval *zero = get_mode_null(mode);
3702 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3704 /* TODO: bitfields */
3705 ir_node *mem = get_store();
3706 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3707 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3710 assert(is_compound_type(type));
3713 if (is_Array_type(type)) {
3714 assert(has_array_upper_bound(type, 0));
3715 n_members = get_array_upper_bound_int(type, 0);
3717 n_members = get_compound_n_members(type);
3720 for (int i = 0; i < n_members; ++i) {
3723 if (is_Array_type(type)) {
3724 ir_entity *entity = get_array_element_entity(type);
3725 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3726 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3727 ir_node *in[1] = { cnst };
3728 irtype = get_array_element_type(type);
3729 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3731 ir_entity *member = get_compound_member(type, i);
3733 irtype = get_entity_type(member);
3734 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3737 create_dynamic_null_initializer(irtype, dbgi, addr);
3742 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3743 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3745 switch(get_initializer_kind(initializer)) {
3746 case IR_INITIALIZER_NULL: {
3747 create_dynamic_null_initializer(type, dbgi, base_addr);
3750 case IR_INITIALIZER_CONST: {
3751 ir_node *node = get_initializer_const_value(initializer);
3752 ir_mode *mode = get_irn_mode(node);
3753 ir_type *ent_type = get_entity_type(entity);
3755 /* is it a bitfield type? */
3756 if (is_Primitive_type(ent_type) &&
3757 get_primitive_base_type(ent_type) != NULL) {
3758 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3762 assert(get_type_mode(type) == mode);
3763 ir_node *mem = get_store();
3764 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3765 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3769 case IR_INITIALIZER_TARVAL: {
3770 tarval *tv = get_initializer_tarval_value(initializer);
3771 ir_mode *mode = get_tarval_mode(tv);
3772 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3773 ir_type *ent_type = get_entity_type(entity);
3775 /* is it a bitfield type? */
3776 if (is_Primitive_type(ent_type) &&
3777 get_primitive_base_type(ent_type) != NULL) {
3778 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3782 assert(get_type_mode(type) == mode);
3783 ir_node *mem = get_store();
3784 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3785 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3789 case IR_INITIALIZER_COMPOUND: {
3790 assert(is_compound_type(type));
3792 if (is_Array_type(type)) {
3793 assert(has_array_upper_bound(type, 0));
3794 n_members = get_array_upper_bound_int(type, 0);
3796 n_members = get_compound_n_members(type);
3799 if (get_initializer_compound_n_entries(initializer)
3800 != (unsigned) n_members)
3801 panic("initializer doesn't match compound type");
3803 for (int i = 0; i < n_members; ++i) {
3806 ir_entity *sub_entity;
3807 if (is_Array_type(type)) {
3808 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3809 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3810 ir_node *in[1] = { cnst };
3811 irtype = get_array_element_type(type);
3812 sub_entity = get_array_element_entity(type);
3813 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3816 sub_entity = get_compound_member(type, i);
3817 irtype = get_entity_type(sub_entity);
3818 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3822 ir_initializer_t *sub_init
3823 = get_initializer_compound_value(initializer, i);
3825 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3832 panic("invalid IR_INITIALIZER found");
3835 static void create_dynamic_initializer(ir_initializer_t *initializer,
3836 dbg_info *dbgi, ir_entity *entity)
3838 ir_node *frame = get_local_frame(entity);
3839 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3840 ir_type *type = get_entity_type(entity);
3842 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3845 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3846 ir_entity *entity, type_t *type)
3848 ir_node *memory = get_store();
3849 ir_node *nomem = new_NoMem();
3850 ir_node *frame = get_irg_frame(current_ir_graph);
3851 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3853 if (initializer->kind == INITIALIZER_VALUE) {
3854 initializer_value_t *initializer_value = &initializer->value;
3856 ir_node *value = expression_to_firm(initializer_value->value);
3857 type = skip_typeref(type);
3858 assign_value(dbgi, addr, type, value);
3862 if (!is_constant_initializer(initializer)) {
3863 ir_initializer_t *irinitializer
3864 = create_ir_initializer(initializer, type);
3866 create_dynamic_initializer(irinitializer, dbgi, entity);
3870 /* create the ir_initializer */
3871 ir_graph *const old_current_ir_graph = current_ir_graph;
3872 current_ir_graph = get_const_code_irg();
3874 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3876 assert(current_ir_graph == get_const_code_irg());
3877 current_ir_graph = old_current_ir_graph;
3879 /* create a "template" entity which is copied to the entity on the stack */
3880 ident *const id = id_unique("initializer.%u");
3881 ir_type *const irtype = get_ir_type(type);
3882 ir_type *const global_type = get_glob_type();
3883 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3884 set_entity_ld_ident(init_entity, id);
3886 set_entity_variability(init_entity, variability_initialized);
3887 set_entity_visibility(init_entity, visibility_local);
3888 set_entity_allocation(init_entity, allocation_static);
3890 set_entity_initializer(init_entity, irinitializer);
3892 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3893 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3895 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3896 set_store(copyb_mem);
3899 static void create_initializer_local_variable_entity(entity_t *entity)
3901 assert(entity->kind == ENTITY_VARIABLE);
3902 initializer_t *initializer = entity->variable.initializer;
3903 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3904 ir_entity *irentity = entity->variable.v.entity;
3905 type_t *type = entity->declaration.type;
3906 create_local_initializer(initializer, dbgi, irentity, type);
3909 static void create_variable_initializer(entity_t *entity)
3911 assert(entity->kind == ENTITY_VARIABLE);
3912 initializer_t *initializer = entity->variable.initializer;
3913 if (initializer == NULL)
3916 declaration_kind_t declaration_kind
3917 = (declaration_kind_t) entity->declaration.kind;
3918 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3919 create_initializer_local_variable_entity(entity);
3923 type_t *type = entity->declaration.type;
3924 type_qualifiers_t tq = get_type_qualifier(type, true);
3926 if (initializer->kind == INITIALIZER_VALUE) {
3927 initializer_value_t *initializer_value = &initializer->value;
3928 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3930 ir_node *value = expression_to_firm(initializer_value->value);
3931 value = do_strict_conv(dbgi, value);
3933 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3934 set_value(entity->variable.v.value_number, value);
3936 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3938 ir_entity *irentity = entity->variable.v.entity;
3940 if (tq & TYPE_QUALIFIER_CONST) {
3941 set_entity_variability(irentity, variability_constant);
3943 set_entity_variability(irentity, variability_initialized);
3945 set_atomic_ent_value(irentity, value);
3948 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3949 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3951 ir_entity *irentity = entity->variable.v.entity;
3952 ir_initializer_t *irinitializer
3953 = create_ir_initializer(initializer, type);
3955 if (tq & TYPE_QUALIFIER_CONST) {
3956 set_entity_variability(irentity, variability_constant);
3958 set_entity_variability(irentity, variability_initialized);
3960 set_entity_initializer(irentity, irinitializer);
3964 static void create_variable_length_array(entity_t *entity)
3966 assert(entity->kind == ENTITY_VARIABLE);
3967 assert(entity->variable.initializer == NULL);
3969 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3970 entity->variable.v.vla_base = NULL;
3972 /* TODO: record VLA somewhere so we create the free node when we leave
3976 static void allocate_variable_length_array(entity_t *entity)
3978 assert(entity->kind == ENTITY_VARIABLE);
3979 assert(entity->variable.initializer == NULL);
3980 assert(get_cur_block() != NULL);
3982 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3983 type_t *type = entity->declaration.type;
3984 ir_type *el_type = get_ir_type(type->array.element_type);
3986 /* make sure size_node is calculated */
3987 get_type_size(type);
3988 ir_node *elems = type->array.size_node;
3989 ir_node *mem = get_store();
3990 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3992 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3993 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3996 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3997 entity->variable.v.vla_base = addr;
4001 * Creates a Firm local variable from a declaration.
4003 static void create_local_variable(entity_t *entity)
4005 assert(entity->kind == ENTITY_VARIABLE);
4006 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4008 bool needs_entity = entity->variable.address_taken;
4009 type_t *type = skip_typeref(entity->declaration.type);
4011 /* is it a variable length array? */
4012 if (is_type_array(type) && !type->array.size_constant) {
4013 create_variable_length_array(entity);
4015 } else if (is_type_array(type) || is_type_compound(type)) {
4016 needs_entity = true;
4017 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4018 needs_entity = true;
4022 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4023 create_variable_entity(entity,
4024 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4027 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4028 entity->variable.v.value_number = next_value_number_function;
4029 set_irg_loc_description(current_ir_graph, next_value_number_function,
4030 (variable_t*) &entity->variable);
4031 ++next_value_number_function;
4035 static void create_local_static_variable(entity_t *entity)
4037 assert(entity->kind == ENTITY_VARIABLE);
4038 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4040 type_t *const type = skip_typeref(entity->declaration.type);
4041 ir_type *const global_type = get_glob_type();
4042 ir_type *const irtype = get_ir_type(type);
4043 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4045 size_t l = strlen(entity->base.symbol->string);
4046 char buf[l + sizeof(".%u")];
4047 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4048 ident *const id = id_unique(buf);
4050 ir_entity *const irentity = new_d_entity(global_type, id, irtype, dbgi);
4052 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4053 set_entity_volatility(irentity, volatility_is_volatile);
4056 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4057 entity->variable.v.entity = irentity;
4058 set_entity_ld_ident(irentity, id);
4059 set_entity_variability(irentity, variability_uninitialized);
4060 set_entity_visibility(irentity, visibility_local);
4061 set_entity_allocation(irentity, allocation_static);
4063 ir_graph *const old_current_ir_graph = current_ir_graph;
4064 current_ir_graph = get_const_code_irg();
4066 create_variable_initializer(entity);
4068 assert(current_ir_graph == get_const_code_irg());
4069 current_ir_graph = old_current_ir_graph;
4074 static void return_statement_to_firm(return_statement_t *statement)
4076 if (get_cur_block() == NULL)
4079 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4080 type_t *type = current_function_entity->declaration.type;
4081 ir_type *func_irtype = get_ir_type(type);
4086 if (get_method_n_ress(func_irtype) > 0) {
4087 ir_type *res_type = get_method_res_type(func_irtype, 0);
4089 if (statement->value != NULL) {
4090 ir_node *node = expression_to_firm(statement->value);
4091 node = do_strict_conv(dbgi, node);
4095 if (is_compound_type(res_type)) {
4098 mode = get_type_mode(res_type);
4100 in[0] = new_Unknown(mode);
4104 /* build return_value for its side effects */
4105 if (statement->value != NULL) {
4106 expression_to_firm(statement->value);
4111 ir_node *store = get_store();
4112 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4114 ir_node *end_block = get_irg_end_block(current_ir_graph);
4115 add_immBlock_pred(end_block, ret);
4117 set_cur_block(NULL);
4120 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4122 if (get_cur_block() == NULL)
4125 return expression_to_firm(statement->expression);
4128 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4130 entity_t *entity = compound->scope.entities;
4131 for ( ; entity != NULL; entity = entity->base.next) {
4132 if (!is_declaration(entity))
4135 create_local_declaration(entity);
4138 ir_node *result = NULL;
4139 statement_t *statement = compound->statements;
4140 for ( ; statement != NULL; statement = statement->base.next) {
4141 if (statement->base.next == NULL
4142 && statement->kind == STATEMENT_EXPRESSION) {
4143 result = expression_statement_to_firm(
4144 &statement->expression);
4147 statement_to_firm(statement);
4153 static void create_global_variable(entity_t *entity)
4155 assert(entity->kind == ENTITY_VARIABLE);
4159 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4160 case STORAGE_CLASS_STATIC:
4161 vis = visibility_local;
4164 case STORAGE_CLASS_EXTERN:
4165 vis = visibility_external_allocated;
4168 case STORAGE_CLASS_NONE:
4169 vis = visibility_external_visible;
4172 case STORAGE_CLASS_THREAD:
4173 vis = visibility_external_visible;
4176 case STORAGE_CLASS_THREAD_EXTERN:
4177 vis = visibility_external_allocated;
4180 case STORAGE_CLASS_THREAD_STATIC:
4181 vis = visibility_local;
4185 var_type = get_tls_type();
4189 var_type = get_glob_type();
4193 create_variable_entity(entity,
4194 DECLARATION_KIND_GLOBAL_VARIABLE,
4196 /* Matze: I'm confused, shouldn't we only be here when creating
4199 if (!is_type_function(skip_typeref(entity->declaration.type))) {
4200 set_entity_visibility(declaration->v.entity, vis);
4203 set_entity_visibility(entity->variable.v.entity, vis);
4208 case STORAGE_CLASS_TYPEDEF:
4209 case STORAGE_CLASS_AUTO:
4210 case STORAGE_CLASS_REGISTER:
4213 panic("Invalid storage class for global variable");
4216 static void create_local_declaration(entity_t *entity)
4218 assert(is_declaration(entity));
4220 /* construct type */
4221 (void) get_ir_type(entity->declaration.type);
4222 if (entity->base.symbol == NULL) {
4226 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4227 case STORAGE_CLASS_STATIC:
4228 create_local_static_variable(entity);
4230 case STORAGE_CLASS_EXTERN:
4231 if (entity->kind == ENTITY_FUNCTION) {
4232 assert(entity->function.statement == NULL);
4233 get_function_entity(entity);
4235 create_global_variable(entity);
4236 create_variable_initializer(entity);
4239 case STORAGE_CLASS_NONE:
4240 case STORAGE_CLASS_AUTO:
4241 case STORAGE_CLASS_REGISTER:
4242 if (entity->kind == ENTITY_FUNCTION) {
4243 if (entity->function.statement != NULL) {
4244 get_function_entity(entity);
4245 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4246 enqueue_inner_function(entity);
4248 get_function_entity(entity);
4251 create_local_variable(entity);
4254 case STORAGE_CLASS_TYPEDEF:
4255 case STORAGE_CLASS_THREAD:
4256 case STORAGE_CLASS_THREAD_EXTERN:
4257 case STORAGE_CLASS_THREAD_STATIC:
4260 panic("invalid storage class found");
4263 static void initialize_local_declaration(entity_t *entity)
4265 if (entity->base.symbol == NULL)
4268 switch ((declaration_kind_t) entity->declaration.kind) {
4269 case DECLARATION_KIND_LOCAL_VARIABLE:
4270 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4271 create_variable_initializer(entity);
4274 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4275 allocate_variable_length_array(entity);
4278 case DECLARATION_KIND_COMPOUND_MEMBER:
4279 case DECLARATION_KIND_GLOBAL_VARIABLE:
4280 case DECLARATION_KIND_FUNCTION:
4281 case DECLARATION_KIND_INNER_FUNCTION:
4284 case DECLARATION_KIND_UNKNOWN:
4285 panic("can't initialize unknown declaration");
4287 panic("invalid declaration kind");
4290 static void declaration_statement_to_firm(declaration_statement_t *statement)
4292 entity_t *entity = statement->declarations_begin;
4293 entity_t *end = statement->declarations_end->base.next;
4294 for ( ; entity != end; entity = entity->base.next) {
4295 if (!is_declaration(entity))
4297 initialize_local_declaration(entity);
4301 static void if_statement_to_firm(if_statement_t *statement)
4303 ir_node *cur_block = get_cur_block();
4305 ir_node *fallthrough_block = NULL;
4307 /* the true (blocks) */
4308 ir_node *true_block = NULL;
4309 if (statement->true_statement != NULL) {
4310 true_block = new_immBlock();
4311 statement_to_firm(statement->true_statement);
4312 if (get_cur_block() != NULL) {
4313 ir_node *jmp = new_Jmp();
4314 if (fallthrough_block == NULL)
4315 fallthrough_block = new_immBlock();
4316 add_immBlock_pred(fallthrough_block, jmp);
4320 /* the false (blocks) */
4321 ir_node *false_block = NULL;
4322 if (statement->false_statement != NULL) {
4323 false_block = new_immBlock();
4325 statement_to_firm(statement->false_statement);
4326 if (get_cur_block() != NULL) {
4327 ir_node *jmp = new_Jmp();
4328 if (fallthrough_block == NULL)
4329 fallthrough_block = new_immBlock();
4330 add_immBlock_pred(fallthrough_block, jmp);
4334 /* create the condition */
4335 if (cur_block != NULL) {
4336 if (true_block == NULL || false_block == NULL) {
4337 if (fallthrough_block == NULL)
4338 fallthrough_block = new_immBlock();
4339 if (true_block == NULL)
4340 true_block = fallthrough_block;
4341 if (false_block == NULL)
4342 false_block = fallthrough_block;
4345 set_cur_block(cur_block);
4346 create_condition_evaluation(statement->condition, true_block,
4350 mature_immBlock(true_block);
4351 if (false_block != fallthrough_block && false_block != NULL) {
4352 mature_immBlock(false_block);
4354 if (fallthrough_block != NULL) {
4355 mature_immBlock(fallthrough_block);
4358 set_cur_block(fallthrough_block);
4361 static void while_statement_to_firm(while_statement_t *statement)
4363 ir_node *jmp = NULL;
4364 if (get_cur_block() != NULL) {
4368 /* create the header block */
4369 ir_node *header_block = new_immBlock();
4371 add_immBlock_pred(header_block, jmp);
4375 ir_node *old_continue_label = continue_label;
4376 ir_node *old_break_label = break_label;
4377 continue_label = header_block;
4380 ir_node *body_block = new_immBlock();
4381 statement_to_firm(statement->body);
4382 ir_node *false_block = break_label;
4384 assert(continue_label == header_block);
4385 continue_label = old_continue_label;
4386 break_label = old_break_label;
4388 if (get_cur_block() != NULL) {
4390 add_immBlock_pred(header_block, jmp);
4393 /* shortcut for while(true) */
4394 if (is_constant_expression(statement->condition)
4395 && fold_constant(statement->condition) != 0) {
4396 set_cur_block(header_block);
4397 ir_node *header_jmp = new_Jmp();
4398 add_immBlock_pred(body_block, header_jmp);
4400 keep_alive(body_block);
4401 keep_all_memory(body_block);
4402 set_cur_block(body_block);
4404 if (false_block == NULL) {
4405 false_block = new_immBlock();
4408 /* create the condition */
4409 set_cur_block(header_block);
4411 create_condition_evaluation(statement->condition, body_block,
4415 mature_immBlock(body_block);
4416 mature_immBlock(header_block);
4417 if (false_block != NULL) {
4418 mature_immBlock(false_block);
4421 set_cur_block(false_block);
4424 static void do_while_statement_to_firm(do_while_statement_t *statement)
4426 ir_node *jmp = NULL;
4427 if (get_cur_block() != NULL) {
4431 /* create the header block */
4432 ir_node *header_block = new_immBlock();
4435 ir_node *body_block = new_immBlock();
4437 add_immBlock_pred(body_block, jmp);
4440 ir_node *old_continue_label = continue_label;
4441 ir_node *old_break_label = break_label;
4442 continue_label = header_block;
4445 statement_to_firm(statement->body);
4446 ir_node *false_block = break_label;
4448 assert(continue_label == header_block);
4449 continue_label = old_continue_label;
4450 break_label = old_break_label;
4452 if (get_cur_block() != NULL) {
4453 ir_node *body_jmp = new_Jmp();
4454 add_immBlock_pred(header_block, body_jmp);
4455 mature_immBlock(header_block);
4458 if (false_block == NULL) {
4459 false_block = new_immBlock();
4462 /* create the condition */
4463 set_cur_block(header_block);
4465 create_condition_evaluation(statement->condition, body_block, false_block);
4466 mature_immBlock(body_block);
4467 mature_immBlock(header_block);
4468 if (false_block != NULL) {
4469 mature_immBlock(false_block);
4472 set_cur_block(false_block);
4475 static void for_statement_to_firm(for_statement_t *statement)
4477 ir_node *jmp = NULL;
4479 /* create declarations */
4480 entity_t *entity = statement->scope.entities;
4481 for ( ; entity != NULL; entity = entity->base.next) {
4482 if (!is_declaration(entity))
4485 create_local_declaration(entity);
4488 if (get_cur_block() != NULL) {
4489 entity = statement->scope.entities;
4490 for ( ; entity != NULL; entity = entity->base.next) {
4491 if (!is_declaration(entity))
4494 initialize_local_declaration(entity);
4497 if (statement->initialisation != NULL) {
4498 expression_to_firm(statement->initialisation);
4505 /* create the step block */
4506 ir_node *const step_block = new_immBlock();
4507 if (statement->step != NULL) {
4508 expression_to_firm(statement->step);
4510 ir_node *const step_jmp = new_Jmp();
4512 /* create the header block */
4513 ir_node *const header_block = new_immBlock();
4515 add_immBlock_pred(header_block, jmp);
4517 add_immBlock_pred(header_block, step_jmp);
4519 /* the false block */
4520 ir_node *const false_block = new_immBlock();
4523 ir_node * body_block;
4524 if (statement->body != NULL) {
4525 ir_node *const old_continue_label = continue_label;
4526 ir_node *const old_break_label = break_label;
4527 continue_label = step_block;
4528 break_label = false_block;
4530 body_block = new_immBlock();
4531 statement_to_firm(statement->body);
4533 assert(continue_label == step_block);
4534 assert(break_label == false_block);
4535 continue_label = old_continue_label;
4536 break_label = old_break_label;
4538 if (get_cur_block() != NULL) {
4540 add_immBlock_pred(step_block, jmp);
4543 body_block = step_block;
4546 /* create the condition */
4547 set_cur_block(header_block);
4548 if (statement->condition != NULL) {
4549 create_condition_evaluation(statement->condition, body_block,
4552 keep_alive(header_block);
4553 keep_all_memory(header_block);
4555 add_immBlock_pred(body_block, jmp);
4558 mature_immBlock(body_block);
4559 mature_immBlock(false_block);
4560 mature_immBlock(step_block);
4561 mature_immBlock(header_block);
4562 mature_immBlock(false_block);
4564 set_cur_block(false_block);
4567 static void create_jump_statement(const statement_t *statement,
4568 ir_node *target_block)
4570 if (get_cur_block() == NULL)
4573 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4574 ir_node *jump = new_d_Jmp(dbgi);
4575 add_immBlock_pred(target_block, jump);
4577 set_cur_block(NULL);
4580 static ir_node *get_break_label(void)
4582 if (break_label == NULL) {
4583 ir_node *cur_block = get_cur_block();
4584 break_label = new_immBlock();
4585 set_cur_block(cur_block);
4590 static void switch_statement_to_firm(switch_statement_t *statement)
4592 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4594 ir_node *expression = expression_to_firm(statement->expression);
4595 ir_node *cond = new_d_Cond(dbgi, expression);
4597 set_cur_block(NULL);
4599 ir_node *const old_switch_cond = current_switch_cond;
4600 ir_node *const old_break_label = break_label;
4601 const bool old_saw_default_label = saw_default_label;
4602 saw_default_label = false;
4603 current_switch_cond = cond;
4605 switch_statement_t *const old_switch = current_switch;
4606 current_switch = statement;
4608 /* determine a free number for the default label */
4609 unsigned long num_cases = 0;
4611 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4612 if (l->expression == NULL) {
4616 if (l->last_case >= l->first_case)
4617 num_cases += l->last_case - l->first_case + 1;
4618 if (l->last_case > def_nr)
4619 def_nr = l->last_case;
4622 if (def_nr == INT_MAX) {
4623 /* Bad: an overflow will occurr, we cannot be sure that the
4624 * maximum + 1 is a free number. Scan the values a second
4625 * time to find a free number.
4627 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4629 memset(bits, 0, (num_cases + 7) >> 3);
4630 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4631 if (l->expression == NULL) {
4635 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4636 if (start < num_cases && l->last_case >= 0) {
4637 unsigned long end = (unsigned long)l->last_case < num_cases ?
4638 (unsigned long)l->last_case : num_cases - 1;
4639 for (unsigned long cns = start; cns <= end; ++cns) {
4640 bits[cns >> 3] |= (1 << (cns & 7));
4644 /* We look at the first num_cases constants:
4645 * Either they are densed, so we took the last (num_cases)
4646 * one, or they are non densed, so we will find one free
4650 for (i = 0; i < num_cases; ++i)
4651 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4659 statement->default_proj_nr = def_nr;
4661 if (statement->body != NULL) {
4662 statement_to_firm(statement->body);
4665 if (get_cur_block() != NULL) {
4666 ir_node *jmp = new_Jmp();
4667 add_immBlock_pred(get_break_label(), jmp);
4670 if (!saw_default_label) {
4671 set_cur_block(get_nodes_block(cond));
4672 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4673 statement->default_proj_nr);
4674 add_immBlock_pred(get_break_label(), proj);
4677 if (break_label != NULL) {
4678 mature_immBlock(break_label);
4680 set_cur_block(break_label);
4682 assert(current_switch_cond == cond);
4683 current_switch = old_switch;
4684 current_switch_cond = old_switch_cond;
4685 break_label = old_break_label;
4686 saw_default_label = old_saw_default_label;
4689 static void case_label_to_firm(const case_label_statement_t *statement)
4691 if (statement->is_empty_range)
4694 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4696 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4699 ir_node *old_block = get_nodes_block(current_switch_cond);
4700 ir_node *block = new_immBlock();
4702 set_cur_block(old_block);
4703 if (statement->expression != NULL) {
4704 long pn = statement->first_case;
4705 long end_pn = statement->last_case;
4706 assert(pn <= end_pn);
4707 /* create jumps for all cases in the given range */
4709 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4710 add_immBlock_pred(block, proj);
4711 } while(pn++ < end_pn);
4713 saw_default_label = true;
4714 proj = new_d_defaultProj(dbgi, current_switch_cond,
4715 current_switch->default_proj_nr);
4717 add_immBlock_pred(block, proj);
4720 if (fallthrough != NULL) {
4721 add_immBlock_pred(block, fallthrough);
4723 mature_immBlock(block);
4724 set_cur_block(block);
4726 if (statement->statement != NULL) {
4727 statement_to_firm(statement->statement);
4731 static void label_to_firm(const label_statement_t *statement)
4733 ir_node *block = get_label_block(statement->label);
4735 if (get_cur_block() != NULL) {
4736 ir_node *jmp = new_Jmp();
4737 add_immBlock_pred(block, jmp);
4740 set_cur_block(block);
4742 keep_all_memory(block);
4744 if (statement->statement != NULL) {
4745 statement_to_firm(statement->statement);
4749 static void goto_to_firm(const goto_statement_t *statement)
4751 if (get_cur_block() == NULL)
4754 if (statement->expression) {
4755 ir_node *irn = expression_to_firm(statement->expression);
4756 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4757 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4759 set_irn_link(ijmp, ijmp_list);
4762 ir_node *block = get_label_block(statement->label);
4763 ir_node *jmp = new_Jmp();
4764 add_immBlock_pred(block, jmp);
4766 set_cur_block(NULL);
4769 static void asm_statement_to_firm(const asm_statement_t *statement)
4771 bool needs_memory = false;
4773 if (statement->is_volatile) {
4774 needs_memory = true;
4777 size_t n_clobbers = 0;
4778 asm_clobber_t *clobber = statement->clobbers;
4779 for ( ; clobber != NULL; clobber = clobber->next) {
4780 const char *clobber_str = clobber->clobber.begin;
4782 if (!be_is_valid_clobber(clobber_str)) {
4783 errorf(&statement->base.source_position,
4784 "invalid clobber '%s' specified", clobber->clobber);
4788 if (strcmp(clobber_str, "memory") == 0) {
4789 needs_memory = true;
4793 ident *id = new_id_from_str(clobber_str);
4794 obstack_ptr_grow(&asm_obst, id);
4797 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4798 ident **clobbers = NULL;
4799 if (n_clobbers > 0) {
4800 clobbers = obstack_finish(&asm_obst);
4803 size_t n_inputs = 0;
4804 asm_argument_t *argument = statement->inputs;
4805 for ( ; argument != NULL; argument = argument->next)
4807 size_t n_outputs = 0;
4808 argument = statement->outputs;
4809 for ( ; argument != NULL; argument = argument->next)
4812 unsigned next_pos = 0;
4814 ir_node *ins[n_inputs + n_outputs + 1];
4817 ir_asm_constraint tmp_in_constraints[n_outputs];
4819 const expression_t *out_exprs[n_outputs];
4820 ir_node *out_addrs[n_outputs];
4821 size_t out_size = 0;
4823 argument = statement->outputs;
4824 for ( ; argument != NULL; argument = argument->next) {
4825 const char *constraints = argument->constraints.begin;
4826 asm_constraint_flags_t asm_flags
4827 = be_parse_asm_constraints(constraints);
4829 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4830 errorf(&statement->base.source_position,
4831 "some constraints in '%s' are not supported", constraints);
4834 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4835 errorf(&statement->base.source_position,
4836 "some constraints in '%s' are invalid", constraints);
4839 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4840 errorf(&statement->base.source_position,
4841 "no write flag specified for output constraints '%s'",
4846 unsigned pos = next_pos++;
4847 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4848 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4849 expression_t *expr = argument->expression;
4850 ir_node *addr = expression_to_addr(expr);
4851 /* in+output, construct an artifical same_as constraint on the
4853 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4855 ir_node *value = get_value_from_lvalue(expr, addr);
4857 snprintf(buf, sizeof(buf), "%u", pos);
4859 ir_asm_constraint constraint;
4860 constraint.pos = pos;
4861 constraint.constraint = new_id_from_str(buf);
4862 constraint.mode = get_ir_mode(expr->base.type);
4863 tmp_in_constraints[in_size] = constraint;
4864 ins[in_size] = value;
4869 out_exprs[out_size] = expr;
4870 out_addrs[out_size] = addr;
4872 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4873 /* pure memory ops need no input (but we have to make sure we
4874 * attach to the memory) */
4875 assert(! (asm_flags &
4876 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4877 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4878 needs_memory = true;
4880 /* we need to attach the address to the inputs */
4881 expression_t *expr = argument->expression;
4883 ir_asm_constraint constraint;
4884 constraint.pos = pos;
4885 constraint.constraint = new_id_from_str(constraints);
4886 constraint.mode = NULL;
4887 tmp_in_constraints[in_size] = constraint;
4889 ins[in_size] = expression_to_addr(expr);
4893 errorf(&statement->base.source_position,
4894 "only modifiers but no place set in constraints '%s'",
4899 ir_asm_constraint constraint;
4900 constraint.pos = pos;
4901 constraint.constraint = new_id_from_str(constraints);
4902 constraint.mode = get_ir_mode(argument->expression->base.type);
4904 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4906 assert(obstack_object_size(&asm_obst)
4907 == out_size * sizeof(ir_asm_constraint));
4908 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4911 obstack_grow(&asm_obst, tmp_in_constraints,
4912 in_size * sizeof(tmp_in_constraints[0]));
4913 /* find and count input and output arguments */
4914 argument = statement->inputs;
4915 for ( ; argument != NULL; argument = argument->next) {
4916 const char *constraints = argument->constraints.begin;
4917 asm_constraint_flags_t asm_flags
4918 = be_parse_asm_constraints(constraints);
4920 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4921 errorf(&statement->base.source_position,
4922 "some constraints in '%s' are not supported", constraints);
4925 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4926 errorf(&statement->base.source_position,
4927 "some constraints in '%s' are invalid", constraints);
4930 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4931 errorf(&statement->base.source_position,
4932 "write flag specified for input constraints '%s'",
4938 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4939 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4940 /* we can treat this as "normal" input */
4941 input = expression_to_firm(argument->expression);
4942 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4943 /* pure memory ops need no input (but we have to make sure we
4944 * attach to the memory) */
4945 assert(! (asm_flags &
4946 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4947 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4948 needs_memory = true;
4949 input = expression_to_addr(argument->expression);
4951 errorf(&statement->base.source_position,
4952 "only modifiers but no place set in constraints '%s'",
4957 ir_asm_constraint constraint;
4958 constraint.pos = next_pos++;
4959 constraint.constraint = new_id_from_str(constraints);
4960 constraint.mode = get_irn_mode(input);
4962 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4963 ins[in_size++] = input;
4967 ir_asm_constraint constraint;
4968 constraint.pos = next_pos++;
4969 constraint.constraint = new_id_from_str("");
4970 constraint.mode = mode_M;
4972 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4973 ins[in_size++] = get_store();
4976 assert(obstack_object_size(&asm_obst)
4977 == in_size * sizeof(ir_asm_constraint));
4978 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4980 /* create asm node */
4981 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4983 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4985 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4986 out_size, output_constraints,
4987 n_clobbers, clobbers, asm_text);
4989 if (statement->is_volatile) {
4990 set_irn_pinned(node, op_pin_state_pinned);
4992 set_irn_pinned(node, op_pin_state_floats);
4995 /* create output projs & connect them */
4997 ir_node *projm = new_Proj(node, mode_M, out_size+1);
5002 for (i = 0; i < out_size; ++i) {
5003 const expression_t *out_expr = out_exprs[i];
5005 ir_mode *mode = get_ir_mode(out_expr->base.type);
5006 ir_node *proj = new_Proj(node, mode, pn);
5007 ir_node *addr = out_addrs[i];
5009 set_value_for_expression_addr(out_expr, proj, addr);
5013 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
5014 statement_to_firm(statement->try_statement);
5015 warningf(&statement->base.source_position, "structured exception handling ignored");
5018 static void leave_statement_to_firm(leave_statement_t *statement) {
5019 errorf(&statement->base.source_position, "__leave not supported yet");
5023 * Transform a statement.
5025 static void statement_to_firm(statement_t *statement)
5028 assert(!statement->base.transformed);
5029 statement->base.transformed = true;
5032 switch (statement->kind) {
5033 case STATEMENT_INVALID:
5034 panic("invalid statement found");
5036 case STATEMENT_EMPTY:
5039 case STATEMENT_COMPOUND:
5040 compound_statement_to_firm(&statement->compound);
5042 case STATEMENT_RETURN:
5043 return_statement_to_firm(&statement->returns);
5045 case STATEMENT_EXPRESSION:
5046 expression_statement_to_firm(&statement->expression);
5049 if_statement_to_firm(&statement->ifs);
5051 case STATEMENT_WHILE:
5052 while_statement_to_firm(&statement->whiles);
5054 case STATEMENT_DO_WHILE:
5055 do_while_statement_to_firm(&statement->do_while);
5057 case STATEMENT_DECLARATION:
5058 declaration_statement_to_firm(&statement->declaration);
5060 case STATEMENT_BREAK:
5061 create_jump_statement(statement, get_break_label());
5063 case STATEMENT_CONTINUE:
5064 create_jump_statement(statement, continue_label);
5066 case STATEMENT_SWITCH:
5067 switch_statement_to_firm(&statement->switchs);
5069 case STATEMENT_CASE_LABEL:
5070 case_label_to_firm(&statement->case_label);
5073 for_statement_to_firm(&statement->fors);
5075 case STATEMENT_LABEL:
5076 label_to_firm(&statement->label);
5078 case STATEMENT_LOCAL_LABEL:
5079 /* local labels transform the semantics of labels while parsing
5080 * they don't need any special treatment here */
5082 case STATEMENT_GOTO:
5083 goto_to_firm(&statement->gotos);
5086 asm_statement_to_firm(&statement->asms);
5088 case STATEMENT_MS_TRY:
5089 ms_try_statement_to_firm(&statement->ms_try);
5091 case STATEMENT_LEAVE:
5092 leave_statement_to_firm(&statement->leave);
5095 panic("Statement not implemented\n");
5098 static int count_local_variables(const entity_t *entity,
5099 const entity_t *const end)
5102 for (; entity != end; entity = entity->base.next) {
5103 if (entity->kind != ENTITY_VARIABLE)
5105 type_t *type = skip_typeref(entity->declaration.type);
5107 if (!entity->variable.address_taken && is_type_scalar(type))
5113 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5115 int *const count = env;
5117 switch (stmt->kind) {
5118 case STATEMENT_DECLARATION: {
5119 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5120 *count += count_local_variables(decl_stmt->declarations_begin,
5121 decl_stmt->declarations_end->base.next);
5126 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5134 static int get_function_n_local_vars(entity_t *entity)
5138 /* count parameters */
5139 count += count_local_variables(entity->function.parameters.entities, NULL);
5141 /* count local variables declared in body */
5142 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5147 static void initialize_function_parameters(entity_t *entity)
5149 assert(entity->kind == ENTITY_FUNCTION);
5150 ir_graph *irg = current_ir_graph;
5151 ir_node *args = get_irg_args(irg);
5152 ir_node *start_block = get_irg_start_block(irg);
5153 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5156 entity_t *parameter = entity->function.parameters.entities;
5157 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5158 assert(parameter->kind == ENTITY_VARIABLE);
5159 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5160 type_t *type = skip_typeref(parameter->declaration.type);
5162 bool needs_entity = parameter->variable.address_taken;
5163 assert(!is_type_array(type));
5164 if (is_type_compound(type)) {
5165 needs_entity = true;
5169 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5170 ident *id = new_id_from_str(parameter->base.symbol->string);
5171 set_entity_ident(entity, id);
5173 parameter->declaration.kind
5174 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5175 parameter->variable.v.entity = entity;
5179 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5180 ir_mode *param_mode = get_type_mode(param_irtype);
5183 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5185 ir_mode *mode = get_ir_mode(type);
5186 value = create_conv(NULL, value, mode);
5187 value = do_strict_conv(NULL, value);
5189 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5190 parameter->variable.v.value_number = next_value_number_function;
5191 set_irg_loc_description(current_ir_graph, next_value_number_function,
5192 (variable_t*) ¶meter->variable);
5193 ++next_value_number_function;
5195 set_value(parameter->variable.v.value_number, value);
5200 * Handle additional decl modifiers for IR-graphs
5202 * @param irg the IR-graph
5203 * @param dec_modifiers additional modifiers
5205 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5207 if (decl_modifiers & DM_NORETURN) {
5208 /* TRUE if the declaration includes the Microsoft
5209 __declspec(noreturn) specifier. */
5210 set_irg_additional_property(irg, mtp_property_noreturn);
5212 if (decl_modifiers & DM_NOTHROW) {
5213 /* TRUE if the declaration includes the Microsoft
5214 __declspec(nothrow) specifier. */
5215 set_irg_additional_property(irg, mtp_property_nothrow);
5217 if (decl_modifiers & DM_NAKED) {
5218 /* TRUE if the declaration includes the Microsoft
5219 __declspec(naked) specifier. */
5220 set_irg_additional_property(irg, mtp_property_naked);
5222 if (decl_modifiers & DM_FORCEINLINE) {
5223 /* TRUE if the declaration includes the
5224 Microsoft __forceinline specifier. */
5225 set_irg_inline_property(irg, irg_inline_forced);
5227 if (decl_modifiers & DM_NOINLINE) {
5228 /* TRUE if the declaration includes the Microsoft
5229 __declspec(noinline) specifier. */
5230 set_irg_inline_property(irg, irg_inline_forbidden);
5234 static void add_function_pointer(ir_type *segment, ir_entity *method,
5235 const char *unique_template)
5237 ir_type *method_type = get_entity_type(method);
5238 ident *id = id_unique(unique_template);
5239 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5241 ident *ide = id_unique(unique_template);
5242 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5243 ir_graph *irg = get_const_code_irg();
5244 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5247 set_entity_compiler_generated(ptr, 1);
5248 set_entity_variability(ptr, variability_constant);
5249 set_atomic_ent_value(ptr, val);
5253 * Generate possible IJmp branches to a given label block.
5255 static void gen_ijmp_branches(ir_node *block) {
5257 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5258 add_immBlock_pred(block, ijmp);
5263 * Create code for a function.
5265 static void create_function(entity_t *entity)
5267 assert(entity->kind == ENTITY_FUNCTION);
5268 ir_entity *function_entity = get_function_entity(entity);
5270 if (entity->function.statement == NULL)
5273 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5274 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5275 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5277 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5278 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5279 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5282 current_function_entity = entity;
5283 current_function_name = NULL;
5284 current_funcsig = NULL;
5286 assert(all_labels == NULL);
5287 all_labels = NEW_ARR_F(label_t *, 0);
5290 int n_local_vars = get_function_n_local_vars(entity);
5291 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5293 ir_graph *old_current_function = current_function;
5294 current_function = irg;
5296 set_irg_fp_model(irg, firm_opt.fp_model);
5297 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5298 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5300 ir_node *first_block = get_cur_block();
5302 /* set inline flags */
5303 if (entity->function.is_inline)
5304 set_irg_inline_property(irg, irg_inline_recomended);
5305 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5307 next_value_number_function = 0;
5308 initialize_function_parameters(entity);
5310 statement_to_firm(entity->function.statement);
5312 ir_node *end_block = get_irg_end_block(irg);
5314 /* do we have a return statement yet? */
5315 if (get_cur_block() != NULL) {
5316 type_t *type = skip_typeref(entity->declaration.type);
5317 assert(is_type_function(type));
5318 const function_type_t *func_type = &type->function;
5319 const type_t *return_type
5320 = skip_typeref(func_type->return_type);
5323 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5324 ret = new_Return(get_store(), 0, NULL);
5327 if (is_type_scalar(return_type)) {
5328 mode = get_ir_mode(func_type->return_type);
5334 /* ยง5.1.2.2.3 main implicitly returns 0 */
5335 if (is_main(entity)) {
5336 in[0] = new_Const(mode, get_mode_null(mode));
5338 in[0] = new_Unknown(mode);
5340 ret = new_Return(get_store(), 1, in);
5342 add_immBlock_pred(end_block, ret);
5345 bool has_computed_gotos = false;
5346 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5347 label_t *label = all_labels[i];
5348 if (label->address_taken) {
5349 gen_ijmp_branches(label->block);
5350 has_computed_gotos = true;
5352 mature_immBlock(label->block);
5354 if (has_computed_gotos) {
5355 /* if we have computed goto's in the function, we cannot inline it */
5356 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5357 warningf(&entity->base.source_position,
5358 "function '%Y' can never be inlined because it contains a computed goto",
5359 entity->base.symbol);
5361 set_irg_inline_property(irg, irg_inline_forbidden);
5364 DEL_ARR_F(all_labels);
5367 mature_immBlock(first_block);
5368 mature_immBlock(end_block);
5370 irg_finalize_cons(irg);
5372 /* finalize the frame type */
5373 ir_type *frame_type = get_irg_frame_type(irg);
5374 int n = get_compound_n_members(frame_type);
5377 for (int i = 0; i < n; ++i) {
5378 ir_entity *entity = get_compound_member(frame_type, i);
5379 ir_type *entity_type = get_entity_type(entity);
5381 int align = get_type_alignment_bytes(entity_type);
5382 if (align > align_all)
5386 misalign = offset % align;
5388 offset += align - misalign;
5392 set_entity_offset(entity, offset);
5393 offset += get_type_size_bytes(entity_type);
5395 set_type_size_bytes(frame_type, offset);
5396 set_type_alignment_bytes(frame_type, align_all);
5399 current_function = old_current_function;
5401 /* create inner functions */
5403 for (inner = next_inner_function(); inner != NULL;
5404 inner = next_inner_function()) {
5405 create_function(inner);
5409 static void scope_to_firm(scope_t *scope)
5411 /* first pass: create declarations */
5412 entity_t *entity = scope->entities;
5413 for ( ; entity != NULL; entity = entity->base.next) {
5414 if (entity->base.symbol == NULL)
5417 if (entity->kind == ENTITY_FUNCTION) {
5418 get_function_entity(entity);
5419 } else if (entity->kind == ENTITY_VARIABLE) {
5420 create_global_variable(entity);
5424 /* second pass: create code/initializers */
5425 entity = scope->entities;
5426 for ( ; entity != NULL; entity = entity->base.next) {
5427 if (entity->base.symbol == NULL)
5430 if (entity->kind == ENTITY_FUNCTION) {
5431 create_function(entity);
5432 } else if (entity->kind == ENTITY_VARIABLE) {
5433 assert(entity->declaration.kind
5434 == DECLARATION_KIND_GLOBAL_VARIABLE);
5435 current_ir_graph = get_const_code_irg();
5436 create_variable_initializer(entity);
5441 void init_ast2firm(void)
5443 obstack_init(&asm_obst);
5444 init_atomic_modes();
5446 /* OS option must be set to the backend */
5447 switch (firm_opt.os_support) {
5448 case OS_SUPPORT_MINGW:
5449 create_ld_ident = create_name_win32;
5451 case OS_SUPPORT_LINUX:
5452 create_ld_ident = create_name_linux_elf;
5454 case OS_SUPPORT_MACHO:
5455 create_ld_ident = create_name_macho;
5458 panic("unexpected OS support mode");
5461 /* create idents for all known runtime functions */
5462 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5463 rts_idents[i] = new_id_from_str(rts_data[i].name);
5466 entitymap_init(&entitymap);
5469 static void init_ir_types(void)
5471 static int ir_types_initialized = 0;
5472 if (ir_types_initialized)
5474 ir_types_initialized = 1;
5476 ir_type_int = get_ir_type(type_int);
5477 ir_type_const_char = get_ir_type(type_const_char);
5478 ir_type_wchar_t = get_ir_type(type_wchar_t);
5479 ir_type_void = get_ir_type(type_void);
5482 void exit_ast2firm(void)
5484 entitymap_destroy(&entitymap);
5485 obstack_free(&asm_obst, NULL);
5488 static void global_asm_to_firm(statement_t *s)
5490 for (; s != NULL; s = s->base.next) {
5491 assert(s->kind == STATEMENT_ASM);
5493 char const *const text = s->asms.asm_text.begin;
5494 size_t size = s->asms.asm_text.size;
5496 /* skip the last \0 */
5497 if (text[size - 1] == '\0')
5500 ident *const id = new_id_from_chars(text, size);
5505 void translation_unit_to_firm(translation_unit_t *unit)
5507 /* just to be sure */
5508 continue_label = NULL;
5510 current_switch_cond = NULL;
5511 current_translation_unit = unit;
5514 inner_functions = NEW_ARR_F(entity_t *, 0);
5516 scope_to_firm(&unit->scope);
5517 global_asm_to_firm(unit->global_asm);
5519 DEL_ARR_F(inner_functions);
5520 inner_functions = NULL;
5522 current_ir_graph = NULL;
5523 current_translation_unit = NULL;