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 if (entity->variable.thread_local) {
1359 ir_node *const no_mem = new_NoMem();
1360 ir_node *const tls = get_irg_tls(current_ir_graph);
1361 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1363 return create_symconst(dbgi, mode_P_data, irentity);
1368 * Returns the correct base address depending on whether it is a parameter or a
1369 * normal local variable.
1371 static ir_node *get_local_frame(ir_entity *const ent)
1373 ir_graph *const irg = current_ir_graph;
1374 const ir_type *const owner = get_entity_owner(ent);
1375 if (owner == get_irg_frame_type(irg)) {
1376 return get_irg_frame(irg);
1378 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1379 return get_irg_value_param_base(irg);
1383 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1385 ir_mode *value_mode = get_irn_mode(value);
1387 if (value_mode == dest_mode || is_Bad(value))
1390 if (dest_mode == mode_b) {
1391 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1392 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1393 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1397 return new_d_Conv(dbgi, value, dest_mode);
1401 * Keep all memory edges of the given block.
1403 static void keep_all_memory(ir_node *block) {
1404 ir_node *old = get_cur_block();
1406 set_cur_block(block);
1407 keep_alive(get_store());
1408 /* TODO: keep all memory edges from restricted pointers */
1412 static ir_node *reference_expression_enum_value_to_firm(
1413 const reference_expression_t *ref)
1415 entity_t *entity = ref->entity;
1416 type_t *type = skip_typeref(entity->enum_value.enum_type);
1417 /* make sure the type is constructed */
1418 (void) get_ir_type(type);
1420 ir_mode *const mode = get_ir_mode(type);
1421 return new_Const(mode, entity->enum_value.tv);
1424 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1426 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1427 entity_t *entity = ref->entity;
1428 assert(is_declaration(entity));
1429 type_t *type = skip_typeref(entity->declaration.type);
1431 /* make sure the type is constructed */
1432 (void) get_ir_type(type);
1434 switch ((declaration_kind_t) entity->declaration.kind) {
1435 case DECLARATION_KIND_UNKNOWN:
1438 case DECLARATION_KIND_LOCAL_VARIABLE: {
1439 ir_mode *const mode = get_ir_mode(type);
1440 return get_value(entity->variable.v.value_number, mode);
1442 case DECLARATION_KIND_FUNCTION: {
1443 ir_mode *const mode = get_ir_mode(type);
1444 return create_symconst(dbgi, mode, entity->function.entity);
1446 case DECLARATION_KIND_INNER_FUNCTION: {
1447 ir_mode *const mode = get_ir_mode(type);
1448 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1449 /* inner function not using the closure */
1450 return create_symconst(dbgi, mode, entity->function.entity);
1452 /* TODO: need trampoline here */
1453 panic("Trampoline code not implemented");
1454 return create_symconst(dbgi, mode, entity->function.entity);
1457 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1458 ir_node *const addr = get_global_var_address(dbgi, entity);
1459 return deref_address(dbgi, entity->declaration.type, addr);
1462 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1463 ir_entity *irentity = entity->variable.v.entity;
1464 ir_node *frame = get_local_frame(irentity);
1465 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1466 return deref_address(dbgi, entity->declaration.type, sel);
1469 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1470 return entity->variable.v.vla_base;
1472 case DECLARATION_KIND_COMPOUND_MEMBER:
1473 panic("not implemented reference type");
1476 panic("reference to declaration with unknown type found");
1479 static ir_node *reference_addr(const reference_expression_t *ref)
1481 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1482 entity_t *entity = ref->entity;
1483 assert(is_declaration(entity));
1485 switch((declaration_kind_t) entity->declaration.kind) {
1486 case DECLARATION_KIND_UNKNOWN:
1488 case DECLARATION_KIND_LOCAL_VARIABLE:
1489 /* you can store to a local variable (so we don't panic but return NULL
1490 * as an indicator for no real address) */
1492 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1493 ir_node *const addr = get_global_var_address(dbgi, entity);
1496 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1497 ir_entity *irentity = entity->variable.v.entity;
1498 ir_node *frame = get_local_frame(irentity);
1499 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1504 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1505 return entity->variable.v.vla_base;
1507 case DECLARATION_KIND_FUNCTION: {
1508 type_t *const type = skip_typeref(entity->declaration.type);
1509 ir_mode *const mode = get_ir_mode(type);
1510 return create_symconst(dbgi, mode, entity->function.entity);
1513 case DECLARATION_KIND_INNER_FUNCTION:
1514 case DECLARATION_KIND_COMPOUND_MEMBER:
1515 panic("not implemented reference type");
1518 panic("reference to declaration with unknown type found");
1522 * Transform calls to builtin functions.
1524 static ir_node *process_builtin_call(const call_expression_t *call)
1526 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1528 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1529 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1531 type_t *type = skip_typeref(builtin->base.type);
1532 assert(is_type_pointer(type));
1534 type_t *function_type = skip_typeref(type->pointer.points_to);
1535 symbol_t *symbol = builtin->symbol;
1537 switch(symbol->ID) {
1538 case T___builtin_alloca: {
1539 if (call->arguments == NULL || call->arguments->next != NULL) {
1540 panic("invalid number of parameters on __builtin_alloca");
1542 expression_t *argument = call->arguments->expression;
1543 ir_node *size = expression_to_firm(argument);
1545 ir_node *store = get_store();
1546 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1548 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1550 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1555 case T___builtin_huge_val:
1556 case T___builtin_inf:
1557 case T___builtin_inff:
1558 case T___builtin_infl: {
1559 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1560 tarval *tv = get_mode_infinite(mode);
1561 ir_node *res = new_d_Const(dbgi, mode, tv);
1564 case T___builtin_nan:
1565 case T___builtin_nanf:
1566 case T___builtin_nanl: {
1567 /* Ignore string for now... */
1568 assert(is_type_function(function_type));
1569 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1570 tarval *tv = get_mode_NAN(mode);
1571 ir_node *res = new_d_Const(dbgi, mode, tv);
1574 case T___builtin_va_end:
1577 panic("Unsupported builtin found\n");
1582 * Transform a call expression.
1583 * Handles some special cases, like alloca() calls, which must be resolved
1584 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1585 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1588 static ir_node *call_expression_to_firm(const call_expression_t *call)
1590 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1591 assert(get_cur_block() != NULL);
1593 expression_t *function = call->function;
1594 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1595 return process_builtin_call(call);
1597 if (function->kind == EXPR_REFERENCE) {
1598 const reference_expression_t *ref = &function->reference;
1599 entity_t *entity = ref->entity;
1601 if (entity->kind == ENTITY_FUNCTION
1602 && entity->function.entity == rts_entities[rts_alloca]) {
1603 /* handle alloca() call */
1604 expression_t *argument = call->arguments->expression;
1605 ir_node *size = expression_to_firm(argument);
1607 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1609 ir_node *store = get_store();
1610 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1611 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1613 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1615 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1620 ir_node *callee = expression_to_firm(function);
1622 type_t *type = skip_typeref(function->base.type);
1623 assert(is_type_pointer(type));
1624 pointer_type_t *pointer_type = &type->pointer;
1625 type_t *points_to = skip_typeref(pointer_type->points_to);
1626 assert(is_type_function(points_to));
1627 function_type_t *function_type = &points_to->function;
1629 int n_parameters = 0;
1630 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1631 ir_type *new_method_type = NULL;
1632 if (function_type->variadic || function_type->unspecified_parameters) {
1633 const call_argument_t *argument = call->arguments;
1634 for ( ; argument != NULL; argument = argument->next) {
1638 /* we need to construct a new method type matching the call
1640 int n_res = get_method_n_ress(ir_method_type);
1641 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1642 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1643 n_parameters, n_res, dbgi);
1644 set_method_calling_convention(new_method_type,
1645 get_method_calling_convention(ir_method_type));
1646 set_method_additional_properties(new_method_type,
1647 get_method_additional_properties(ir_method_type));
1648 set_method_variadicity(new_method_type,
1649 get_method_variadicity(ir_method_type));
1651 for (int i = 0; i < n_res; ++i) {
1652 set_method_res_type(new_method_type, i,
1653 get_method_res_type(ir_method_type, i));
1655 argument = call->arguments;
1656 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1657 expression_t *expression = argument->expression;
1658 ir_type *irtype = get_ir_type(expression->base.type);
1659 set_method_param_type(new_method_type, i, irtype);
1661 ir_method_type = new_method_type;
1663 n_parameters = get_method_n_params(ir_method_type);
1666 ir_node *in[n_parameters];
1668 const call_argument_t *argument = call->arguments;
1669 for (int n = 0; n < n_parameters; ++n) {
1670 expression_t *expression = argument->expression;
1671 ir_node *arg_node = expression_to_firm(expression);
1673 arg_node = do_strict_conv(dbgi, arg_node);
1677 argument = argument->next;
1680 ir_node *store = get_store();
1681 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1683 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1686 type_t *return_type = skip_typeref(function_type->return_type);
1687 ir_node *result = NULL;
1689 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1691 if (is_type_scalar(return_type)) {
1692 mode = get_ir_mode(return_type);
1696 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1697 result = new_d_Proj(dbgi, resproj, mode, 0);
1700 if (function->kind == EXPR_REFERENCE &&
1701 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1702 /* A dead end: Keep the Call and the Block. Also place all further
1703 * nodes into a new and unreachable block. */
1705 keep_alive(get_cur_block());
1712 static void statement_to_firm(statement_t *statement);
1713 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1715 static ir_node *expression_to_addr(const expression_t *expression);
1716 static ir_node *create_condition_evaluation(const expression_t *expression,
1717 ir_node *true_block,
1718 ir_node *false_block);
1720 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1723 value = do_strict_conv(dbgi, value);
1725 ir_node *memory = get_store();
1727 if (is_type_scalar(type)) {
1728 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1729 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1730 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1731 set_Store_volatility(store, volatility_is_volatile);
1732 set_store(store_mem);
1734 ir_type *irtype = get_ir_type(type);
1735 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1736 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1737 set_store(copyb_mem);
1741 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1743 tarval *all_one = get_mode_all_one(mode);
1744 int mode_size = get_mode_size_bits(mode);
1746 assert(offset >= 0);
1748 assert(offset + size <= mode_size);
1749 if (size == mode_size) {
1753 long shiftr = get_mode_size_bits(mode) - size;
1754 long shiftl = offset;
1755 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1756 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1757 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1758 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1763 static void bitfield_store_to_firm(dbg_info *dbgi,
1764 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1766 ir_type *entity_type = get_entity_type(entity);
1767 ir_type *base_type = get_primitive_base_type(entity_type);
1768 assert(base_type != NULL);
1769 ir_mode *mode = get_type_mode(base_type);
1771 value = create_conv(dbgi, value, mode);
1773 /* kill upper bits of value and shift to right position */
1774 int bitoffset = get_entity_offset_bits_remainder(entity);
1775 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1777 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1778 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1779 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1780 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1781 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1782 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1784 /* load current value */
1785 ir_node *mem = get_store();
1786 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1787 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1788 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1789 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1790 tarval *inv_mask = tarval_not(shift_mask);
1791 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1792 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1794 /* construct new value and store */
1795 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1796 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1797 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1798 set_store(store_mem);
1801 set_Load_volatility(load, volatility_is_volatile);
1802 set_Store_volatility(store, volatility_is_volatile);
1806 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1809 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1810 type_t *type = expression->base.type;
1811 ir_mode *mode = get_ir_mode(type);
1812 ir_node *mem = get_store();
1813 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1814 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1815 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1817 load_res = create_conv(dbgi, load_res, mode_int);
1819 set_store(load_mem);
1821 /* kill upper bits */
1822 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1823 ir_entity *entity = expression->compound_entry->compound_member.entity;
1824 int bitoffset = get_entity_offset_bits_remainder(entity);
1825 ir_type *entity_type = get_entity_type(entity);
1826 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1827 long shift_bitsl = machine_size - bitoffset - bitsize;
1828 assert(shift_bitsl >= 0);
1829 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1830 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1831 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1833 long shift_bitsr = bitoffset + shift_bitsl;
1834 assert(shift_bitsr <= (long) machine_size);
1835 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1836 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1838 if (mode_is_signed(mode)) {
1839 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1841 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1844 return create_conv(dbgi, shiftr, mode);
1847 /* make sure the selected compound type is constructed */
1848 static void construct_select_compound(const select_expression_t *expression)
1850 type_t *type = skip_typeref(expression->compound->base.type);
1851 if (is_type_pointer(type)) {
1852 type = type->pointer.points_to;
1854 (void) get_ir_type(type);
1857 static void set_value_for_expression_addr(const expression_t *expression,
1858 ir_node *value, ir_node *addr)
1860 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1861 value = do_strict_conv(dbgi, value);
1863 if (expression->kind == EXPR_REFERENCE) {
1864 const reference_expression_t *ref = &expression->reference;
1866 entity_t *entity = ref->entity;
1867 assert(is_declaration(entity));
1868 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1869 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1870 set_value(entity->variable.v.value_number, value);
1876 addr = expression_to_addr(expression);
1878 type_t *type = skip_typeref(expression->base.type);
1880 if (expression->kind == EXPR_SELECT) {
1881 const select_expression_t *select = &expression->select;
1883 construct_select_compound(select);
1885 entity_t *entity = select->compound_entry;
1886 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1887 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1888 ir_entity *irentity = entity->compound_member.entity;
1890 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1891 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1896 assign_value(dbgi, addr, type, value);
1899 static void set_value_for_expression(const expression_t *expression,
1902 set_value_for_expression_addr(expression, value, NULL);
1905 static ir_node *get_value_from_lvalue(const expression_t *expression,
1908 if (expression->kind == EXPR_REFERENCE) {
1909 const reference_expression_t *ref = &expression->reference;
1911 entity_t *entity = ref->entity;
1912 assert(entity->kind == ENTITY_VARIABLE);
1913 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1914 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1915 assert(addr == NULL);
1916 ir_mode *mode = get_ir_mode(expression->base.type);
1917 return get_value(entity->variable.v.value_number, mode);
1921 assert(addr != NULL);
1922 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1925 if (expression->kind == EXPR_SELECT &&
1926 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1927 construct_select_compound(&expression->select);
1928 value = bitfield_extract_to_firm(&expression->select, addr);
1930 value = deref_address(dbgi, expression->base.type, addr);
1937 static ir_node *create_incdec(const unary_expression_t *expression)
1939 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1940 const expression_t *value_expr = expression->value;
1941 ir_node *addr = expression_to_addr(value_expr);
1942 ir_node *value = get_value_from_lvalue(value_expr, addr);
1944 type_t *type = skip_typeref(expression->base.type);
1945 ir_mode *mode = get_ir_mode(expression->base.type);
1948 if (is_type_pointer(type)) {
1949 pointer_type_t *pointer_type = &type->pointer;
1950 offset = get_type_size(pointer_type->points_to);
1952 assert(is_type_arithmetic(type));
1953 offset = new_Const(mode, get_mode_one(mode));
1957 ir_node *store_value;
1958 switch(expression->base.kind) {
1959 case EXPR_UNARY_POSTFIX_INCREMENT:
1961 store_value = new_d_Add(dbgi, value, offset, mode);
1963 case EXPR_UNARY_POSTFIX_DECREMENT:
1965 store_value = new_d_Sub(dbgi, value, offset, mode);
1967 case EXPR_UNARY_PREFIX_INCREMENT:
1968 result = new_d_Add(dbgi, value, offset, mode);
1969 store_value = result;
1971 case EXPR_UNARY_PREFIX_DECREMENT:
1972 result = new_d_Sub(dbgi, value, offset, mode);
1973 store_value = result;
1976 panic("no incdec expr in create_incdec");
1979 set_value_for_expression_addr(value_expr, store_value, addr);
1984 static bool is_local_variable(expression_t *expression)
1986 if (expression->kind != EXPR_REFERENCE)
1988 reference_expression_t *ref_expr = &expression->reference;
1989 entity_t *entity = ref_expr->entity;
1990 if (entity->kind != ENTITY_VARIABLE)
1992 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1993 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
1996 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1999 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2000 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2001 case EXPR_BINARY_NOTEQUAL:
2002 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2003 case EXPR_BINARY_ISLESS:
2004 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2005 case EXPR_BINARY_ISLESSEQUAL:
2006 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2007 case EXPR_BINARY_ISGREATER:
2008 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2009 case EXPR_BINARY_ISGREATEREQUAL:
2010 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2011 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2016 panic("trying to get pn_Cmp from non-comparison binexpr type");
2020 * Handle the assume optimizer hint: check if a Confirm
2021 * node can be created.
2023 * @param dbi debug info
2024 * @param expr the IL assume expression
2026 * we support here only some simple cases:
2031 static ir_node *handle_assume_compare(dbg_info *dbi,
2032 const binary_expression_t *expression)
2034 expression_t *op1 = expression->left;
2035 expression_t *op2 = expression->right;
2036 entity_t *var2, *var = NULL;
2037 ir_node *res = NULL;
2040 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2042 if (is_local_variable(op1) && is_local_variable(op2)) {
2043 var = op1->reference.entity;
2044 var2 = op2->reference.entity;
2046 type_t *const type = skip_typeref(var->declaration.type);
2047 ir_mode *const mode = get_ir_mode(type);
2049 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2050 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2052 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2053 set_value(var2->variable.v.value_number, res);
2055 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2056 set_value(var->variable.v.value_number, res);
2062 if (is_local_variable(op1) && is_constant_expression(op2)) {
2063 var = op1->reference.entity;
2065 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2066 cmp_val = get_inversed_pnc(cmp_val);
2067 var = op2->reference.entity;
2072 type_t *const type = skip_typeref(var->declaration.type);
2073 ir_mode *const mode = get_ir_mode(type);
2075 res = get_value(var->variable.v.value_number, mode);
2076 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2077 set_value(var->variable.v.value_number, res);
2083 * Handle the assume optimizer hint.
2085 * @param dbi debug info
2086 * @param expr the IL assume expression
2088 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2089 switch(expression->kind) {
2090 case EXPR_BINARY_EQUAL:
2091 case EXPR_BINARY_NOTEQUAL:
2092 case EXPR_BINARY_LESS:
2093 case EXPR_BINARY_LESSEQUAL:
2094 case EXPR_BINARY_GREATER:
2095 case EXPR_BINARY_GREATEREQUAL:
2096 return handle_assume_compare(dbi, &expression->binary);
2102 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2104 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2105 type_t *type = skip_typeref(expression->base.type);
2107 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2108 return expression_to_addr(expression->value);
2110 const expression_t *value = expression->value;
2112 switch(expression->base.kind) {
2113 case EXPR_UNARY_NEGATE: {
2114 ir_node *value_node = expression_to_firm(value);
2115 ir_mode *mode = get_ir_mode(type);
2116 return new_d_Minus(dbgi, value_node, mode);
2118 case EXPR_UNARY_PLUS:
2119 return expression_to_firm(value);
2120 case EXPR_UNARY_BITWISE_NEGATE: {
2121 ir_node *value_node = expression_to_firm(value);
2122 ir_mode *mode = get_ir_mode(type);
2123 return new_d_Not(dbgi, value_node, mode);
2125 case EXPR_UNARY_NOT: {
2126 ir_node *value_node = _expression_to_firm(value);
2127 value_node = create_conv(dbgi, value_node, mode_b);
2128 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2131 case EXPR_UNARY_DEREFERENCE: {
2132 ir_node *value_node = expression_to_firm(value);
2133 type_t *value_type = skip_typeref(value->base.type);
2134 assert(is_type_pointer(value_type));
2135 type_t *points_to = value_type->pointer.points_to;
2136 return deref_address(dbgi, points_to, value_node);
2138 case EXPR_UNARY_POSTFIX_INCREMENT:
2139 case EXPR_UNARY_POSTFIX_DECREMENT:
2140 case EXPR_UNARY_PREFIX_INCREMENT:
2141 case EXPR_UNARY_PREFIX_DECREMENT:
2142 return create_incdec(expression);
2143 case EXPR_UNARY_CAST: {
2144 ir_node *value_node = expression_to_firm(value);
2145 if (is_type_scalar(type)) {
2146 ir_mode *mode = get_ir_mode(type);
2147 ir_node *node = create_conv(dbgi, value_node, mode);
2148 node = do_strict_conv(dbgi, node);
2151 /* make sure firm type is constructed */
2152 (void) get_ir_type(type);
2156 case EXPR_UNARY_CAST_IMPLICIT: {
2157 ir_node *value_node = expression_to_firm(value);
2158 if (is_type_scalar(type)) {
2159 ir_mode *mode = get_ir_mode(type);
2160 return create_conv(dbgi, value_node, mode);
2165 case EXPR_UNARY_ASSUME:
2166 if (firm_opt.confirm)
2167 return handle_assume(dbgi, value);
2174 panic("invalid UNEXPR type found");
2178 * produces a 0/1 depending of the value of a mode_b node
2180 static ir_node *produce_condition_result(const expression_t *expression,
2183 ir_mode *mode = get_ir_mode(expression->base.type);
2184 ir_node *cur_block = get_cur_block();
2186 ir_node *one_block = new_immBlock();
2187 ir_node *one = new_Const(mode, get_mode_one(mode));
2188 ir_node *jmp_one = new_d_Jmp(dbgi);
2190 ir_node *zero_block = new_immBlock();
2191 ir_node *zero = new_Const(mode, get_mode_null(mode));
2192 ir_node *jmp_zero = new_d_Jmp(dbgi);
2194 set_cur_block(cur_block);
2195 create_condition_evaluation(expression, one_block, zero_block);
2196 mature_immBlock(one_block);
2197 mature_immBlock(zero_block);
2199 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2200 new_Block(2, in_cf);
2202 ir_node *in[2] = { one, zero };
2203 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2208 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2209 ir_node *value, type_t *type)
2211 pointer_type_t *const pointer_type = &type->pointer;
2212 type_t *const points_to = skip_typeref(pointer_type->points_to);
2213 unsigned elem_size = get_type_size_const(points_to);
2215 /* gcc extension: allow arithmetic with void * and function * */
2216 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2217 is_type_function(points_to)) {
2221 assert(elem_size >= 1);
2225 value = create_conv(dbgi, value, mode_int);
2226 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2227 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2231 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2232 ir_node *left, ir_node *right)
2235 type_t *type_left = skip_typeref(expression->left->base.type);
2236 type_t *type_right = skip_typeref(expression->right->base.type);
2238 expression_kind_t kind = expression->base.kind;
2241 case EXPR_BINARY_SHIFTLEFT:
2242 case EXPR_BINARY_SHIFTRIGHT:
2243 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2244 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2245 mode = get_irn_mode(left);
2246 right = create_conv(dbgi, right, mode_uint);
2249 case EXPR_BINARY_SUB:
2250 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2251 const pointer_type_t *const ptr_type = &type_left->pointer;
2253 mode = get_ir_mode(expression->base.type);
2254 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2255 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2256 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2257 ir_node *const no_mem = new_NoMem();
2258 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2259 mode, op_pin_state_floats);
2260 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2263 case EXPR_BINARY_SUB_ASSIGN:
2264 if (is_type_pointer(type_left)) {
2265 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2266 mode = get_ir_mode(type_left);
2271 case EXPR_BINARY_ADD:
2272 case EXPR_BINARY_ADD_ASSIGN:
2273 if (is_type_pointer(type_left)) {
2274 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2275 mode = get_ir_mode(type_left);
2277 } else if (is_type_pointer(type_right)) {
2278 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2279 mode = get_ir_mode(type_right);
2286 mode = get_irn_mode(right);
2287 left = create_conv(dbgi, left, mode);
2292 case EXPR_BINARY_ADD_ASSIGN:
2293 case EXPR_BINARY_ADD:
2294 return new_d_Add(dbgi, left, right, mode);
2295 case EXPR_BINARY_SUB_ASSIGN:
2296 case EXPR_BINARY_SUB:
2297 return new_d_Sub(dbgi, left, right, mode);
2298 case EXPR_BINARY_MUL_ASSIGN:
2299 case EXPR_BINARY_MUL:
2300 return new_d_Mul(dbgi, left, right, mode);
2301 case EXPR_BINARY_BITWISE_AND:
2302 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2303 return new_d_And(dbgi, left, right, mode);
2304 case EXPR_BINARY_BITWISE_OR:
2305 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2306 return new_d_Or(dbgi, left, right, mode);
2307 case EXPR_BINARY_BITWISE_XOR:
2308 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2309 return new_d_Eor(dbgi, left, right, mode);
2310 case EXPR_BINARY_SHIFTLEFT:
2311 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2312 return new_d_Shl(dbgi, left, right, mode);
2313 case EXPR_BINARY_SHIFTRIGHT:
2314 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2315 if (mode_is_signed(mode)) {
2316 return new_d_Shrs(dbgi, left, right, mode);
2318 return new_d_Shr(dbgi, left, right, mode);
2320 case EXPR_BINARY_DIV:
2321 case EXPR_BINARY_DIV_ASSIGN: {
2322 ir_node *pin = new_Pin(new_NoMem());
2325 if (mode_is_float(mode)) {
2326 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2327 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2329 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2330 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2334 case EXPR_BINARY_MOD:
2335 case EXPR_BINARY_MOD_ASSIGN: {
2336 ir_node *pin = new_Pin(new_NoMem());
2337 assert(!mode_is_float(mode));
2338 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2339 op_pin_state_floats);
2340 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2344 panic("unexpected expression kind");
2348 static ir_node *create_lazy_op(const binary_expression_t *expression)
2350 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2351 type_t *type = expression->base.type;
2352 ir_mode *mode = get_ir_mode(type);
2354 if (is_constant_expression(expression->left)) {
2355 long val = fold_constant(expression->left);
2356 expression_kind_t ekind = expression->base.kind;
2357 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2358 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2359 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2360 return expression_to_firm(expression->right);
2362 return new_Const(mode, get_mode_one(mode));
2366 return produce_condition_result((const expression_t*) expression, dbgi);
2369 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2370 ir_node *right, ir_mode *mode);
2372 static ir_node *create_assign_binop(const binary_expression_t *expression)
2374 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2375 const expression_t *left_expr = expression->left;
2376 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2377 ir_node *right = expression_to_firm(expression->right);
2378 ir_node *left_addr = expression_to_addr(left_expr);
2379 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2380 ir_node *result = create_op(dbgi, expression, left, right);
2382 result = create_conv(dbgi, result, left_mode);
2383 result = do_strict_conv(dbgi, result);
2385 set_value_for_expression_addr(left_expr, result, left_addr);
2390 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2392 expression_kind_t kind = expression->base.kind;
2395 case EXPR_BINARY_EQUAL:
2396 case EXPR_BINARY_NOTEQUAL:
2397 case EXPR_BINARY_LESS:
2398 case EXPR_BINARY_LESSEQUAL:
2399 case EXPR_BINARY_GREATER:
2400 case EXPR_BINARY_GREATEREQUAL:
2401 case EXPR_BINARY_ISGREATER:
2402 case EXPR_BINARY_ISGREATEREQUAL:
2403 case EXPR_BINARY_ISLESS:
2404 case EXPR_BINARY_ISLESSEQUAL:
2405 case EXPR_BINARY_ISLESSGREATER:
2406 case EXPR_BINARY_ISUNORDERED: {
2407 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2408 ir_node *left = expression_to_firm(expression->left);
2409 ir_node *right = expression_to_firm(expression->right);
2410 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2411 long pnc = get_pnc(kind, expression->left->base.type);
2412 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2415 case EXPR_BINARY_ASSIGN: {
2416 ir_node *addr = expression_to_addr(expression->left);
2417 ir_node *right = expression_to_firm(expression->right);
2418 set_value_for_expression_addr(expression->left, right, addr);
2422 case EXPR_BINARY_ADD:
2423 case EXPR_BINARY_SUB:
2424 case EXPR_BINARY_MUL:
2425 case EXPR_BINARY_DIV:
2426 case EXPR_BINARY_MOD:
2427 case EXPR_BINARY_BITWISE_AND:
2428 case EXPR_BINARY_BITWISE_OR:
2429 case EXPR_BINARY_BITWISE_XOR:
2430 case EXPR_BINARY_SHIFTLEFT:
2431 case EXPR_BINARY_SHIFTRIGHT:
2433 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2434 ir_node *left = expression_to_firm(expression->left);
2435 ir_node *right = expression_to_firm(expression->right);
2436 return create_op(dbgi, expression, left, right);
2438 case EXPR_BINARY_LOGICAL_AND:
2439 case EXPR_BINARY_LOGICAL_OR:
2440 return create_lazy_op(expression);
2441 case EXPR_BINARY_COMMA:
2442 /* create side effects of left side */
2443 (void) expression_to_firm(expression->left);
2444 return _expression_to_firm(expression->right);
2446 case EXPR_BINARY_ADD_ASSIGN:
2447 case EXPR_BINARY_SUB_ASSIGN:
2448 case EXPR_BINARY_MUL_ASSIGN:
2449 case EXPR_BINARY_MOD_ASSIGN:
2450 case EXPR_BINARY_DIV_ASSIGN:
2451 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2452 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2453 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2454 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2455 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2456 return create_assign_binop(expression);
2457 case EXPR_BINARY_BUILTIN_EXPECT:
2458 return _expression_to_firm(expression->left);
2460 panic("TODO binexpr type");
2464 static ir_node *array_access_addr(const array_access_expression_t *expression)
2466 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2467 ir_node *base_addr = expression_to_firm(expression->array_ref);
2468 ir_node *offset = expression_to_firm(expression->index);
2470 type_t *offset_type = skip_typeref(expression->index->base.type);
2472 if (is_type_signed(offset_type)) {
2473 mode = get_ir_mode(type_ssize_t);
2475 mode = get_ir_mode(type_size_t);
2477 offset = create_conv(dbgi, offset, mode);
2479 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2480 assert(is_type_pointer(ref_type));
2481 pointer_type_t *pointer_type = &ref_type->pointer;
2483 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2484 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2485 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2487 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2492 static ir_node *array_access_to_firm(
2493 const array_access_expression_t *expression)
2495 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2496 ir_node *addr = array_access_addr(expression);
2497 type_t *type = revert_automatic_type_conversion(
2498 (const expression_t*) expression);
2499 type = skip_typeref(type);
2501 return deref_address(dbgi, type, addr);
2504 static long get_offsetof_offset(const offsetof_expression_t *expression)
2506 type_t *orig_type = expression->type;
2509 designator_t *designator = expression->designator;
2510 for ( ; designator != NULL; designator = designator->next) {
2511 type_t *type = skip_typeref(orig_type);
2512 /* be sure the type is constructed */
2513 (void) get_ir_type(type);
2515 if (designator->symbol != NULL) {
2516 assert(is_type_compound(type));
2517 symbol_t *symbol = designator->symbol;
2519 compound_t *compound = type->compound.compound;
2520 entity_t *iter = compound->members.entities;
2521 for ( ; iter != NULL; iter = iter->base.next) {
2522 if (iter->base.symbol == symbol) {
2526 assert(iter != NULL);
2528 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2529 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2530 offset += get_entity_offset(iter->compound_member.entity);
2532 orig_type = iter->declaration.type;
2534 expression_t *array_index = designator->array_index;
2535 assert(designator->array_index != NULL);
2536 assert(is_type_array(type));
2538 long index = fold_constant(array_index);
2539 ir_type *arr_type = get_ir_type(type);
2540 ir_type *elem_type = get_array_element_type(arr_type);
2541 long elem_size = get_type_size_bytes(elem_type);
2543 offset += index * elem_size;
2545 orig_type = type->array.element_type;
2552 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2554 ir_mode *mode = get_ir_mode(expression->base.type);
2555 long offset = get_offsetof_offset(expression);
2556 tarval *tv = new_tarval_from_long(offset, mode);
2557 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2559 return new_d_Const(dbgi, mode, tv);
2562 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2563 ir_entity *entity, type_t *type);
2565 static ir_node *compound_literal_to_firm(
2566 const compound_literal_expression_t *expression)
2568 type_t *type = expression->type;
2570 /* create an entity on the stack */
2571 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2573 ident *const id = id_unique("CompLit.%u");
2574 ir_type *const irtype = get_ir_type(type);
2575 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2576 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2577 set_entity_ld_ident(entity, id);
2579 set_entity_variability(entity, variability_uninitialized);
2581 /* create initialisation code */
2582 initializer_t *initializer = expression->initializer;
2583 create_local_initializer(initializer, dbgi, entity, type);
2585 /* create a sel for the compound literal address */
2586 ir_node *frame = get_local_frame(entity);
2587 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2592 * Transform a sizeof expression into Firm code.
2594 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2596 type_t *type = expression->type;
2598 type = expression->tp_expression->base.type;
2599 assert(type != NULL);
2602 type = skip_typeref(type);
2603 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2604 if (is_type_array(type) && type->array.is_vla
2605 && expression->tp_expression != NULL) {
2606 expression_to_firm(expression->tp_expression);
2609 return get_type_size(type);
2613 * Transform an alignof expression into Firm code.
2615 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2617 type_t *type = expression->type;
2619 /* beware: if expression is a variable reference, return the
2620 alignment of the variable. */
2621 const expression_t *tp_expression = expression->tp_expression;
2622 const entity_t *entity = expression_is_variable(tp_expression);
2623 if (entity != NULL) {
2624 /* TODO: get the alignment of this variable. */
2627 type = tp_expression->base.type;
2628 assert(type != NULL);
2631 ir_mode *const mode = get_ir_mode(expression->base.type);
2632 symconst_symbol sym;
2633 sym.type_p = get_ir_type(type);
2634 return new_SymConst(mode, sym, symconst_type_align);
2637 static void init_ir_types(void);
2639 long fold_constant(const expression_t *expression)
2641 assert(is_type_valid(skip_typeref(expression->base.type)));
2643 bool constant_folding_old = constant_folding;
2644 constant_folding = true;
2648 assert(is_constant_expression(expression));
2650 ir_graph *old_current_ir_graph = current_ir_graph;
2651 if (current_ir_graph == NULL) {
2652 current_ir_graph = get_const_code_irg();
2655 ir_node *cnst = expression_to_firm(expression);
2656 current_ir_graph = old_current_ir_graph;
2658 if (!is_Const(cnst)) {
2659 panic("couldn't fold constant\n");
2662 tarval *tv = get_Const_tarval(cnst);
2663 if (!tarval_is_long(tv)) {
2664 panic("result of constant folding is not integer\n");
2667 constant_folding = constant_folding_old;
2669 return get_tarval_long(tv);
2672 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2674 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2676 /* first try to fold a constant condition */
2677 if (is_constant_expression(expression->condition)) {
2678 long val = fold_constant(expression->condition);
2680 expression_t *true_expression = expression->true_expression;
2681 if (true_expression == NULL)
2682 true_expression = expression->condition;
2683 return expression_to_firm(true_expression);
2685 return expression_to_firm(expression->false_expression);
2689 ir_node *cur_block = get_cur_block();
2691 /* create the true block */
2692 ir_node *true_block = new_immBlock();
2694 ir_node *true_val = expression->true_expression != NULL ?
2695 expression_to_firm(expression->true_expression) : NULL;
2696 ir_node *true_jmp = new_Jmp();
2698 /* create the false block */
2699 ir_node *false_block = new_immBlock();
2701 ir_node *false_val = expression_to_firm(expression->false_expression);
2702 ir_node *false_jmp = new_Jmp();
2704 /* create the condition evaluation */
2705 set_cur_block(cur_block);
2706 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2707 if (expression->true_expression == NULL) {
2708 if (cond_expr != NULL) {
2709 true_val = cond_expr;
2711 /* Condition ended with a short circuit (&&, ||, !) operation.
2712 * Generate a "1" as value for the true branch. */
2713 ir_mode *const mode = mode_Is;
2714 true_val = new_Const(mode, get_mode_one(mode));
2717 mature_immBlock(true_block);
2718 mature_immBlock(false_block);
2720 /* create the common block */
2721 ir_node *in_cf[2] = { true_jmp, false_jmp };
2722 new_Block(2, in_cf);
2724 /* TODO improve static semantics, so either both or no values are NULL */
2725 if (true_val == NULL || false_val == NULL)
2728 ir_node *in[2] = { true_val, false_val };
2729 ir_mode *mode = get_irn_mode(true_val);
2730 assert(get_irn_mode(false_val) == mode);
2731 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2737 * Returns an IR-node representing the address of a field.
2739 static ir_node *select_addr(const select_expression_t *expression)
2741 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2743 construct_select_compound(expression);
2745 ir_node *compound_addr = expression_to_firm(expression->compound);
2747 entity_t *entry = expression->compound_entry;
2748 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2749 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2750 ir_entity *irentity = entry->compound_member.entity;
2752 assert(irentity != NULL);
2754 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2759 static ir_node *select_to_firm(const select_expression_t *expression)
2761 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2762 ir_node *addr = select_addr(expression);
2763 type_t *type = revert_automatic_type_conversion(
2764 (const expression_t*) expression);
2765 type = skip_typeref(type);
2767 entity_t *entry = expression->compound_entry;
2768 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2769 type_t *entry_type = skip_typeref(entry->declaration.type);
2771 if (entry_type->kind == TYPE_BITFIELD) {
2772 return bitfield_extract_to_firm(expression, addr);
2775 return deref_address(dbgi, type, addr);
2778 /* Values returned by __builtin_classify_type. */
2779 typedef enum gcc_type_class
2785 enumeral_type_class,
2788 reference_type_class,
2792 function_type_class,
2803 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2805 type_t *type = expr->type_expression->base.type;
2807 /* FIXME gcc returns different values depending on whether compiling C or C++
2808 * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
2811 type = skip_typeref(type);
2812 switch (type->kind) {
2814 const atomic_type_t *const atomic_type = &type->atomic;
2815 switch (atomic_type->akind) {
2816 /* should not be reached */
2817 case ATOMIC_TYPE_INVALID:
2821 /* gcc cannot do that */
2822 case ATOMIC_TYPE_VOID:
2823 tc = void_type_class;
2826 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2827 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2828 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2829 case ATOMIC_TYPE_SHORT:
2830 case ATOMIC_TYPE_USHORT:
2831 case ATOMIC_TYPE_INT:
2832 case ATOMIC_TYPE_UINT:
2833 case ATOMIC_TYPE_LONG:
2834 case ATOMIC_TYPE_ULONG:
2835 case ATOMIC_TYPE_LONGLONG:
2836 case ATOMIC_TYPE_ULONGLONG:
2837 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2838 tc = integer_type_class;
2841 case ATOMIC_TYPE_FLOAT:
2842 case ATOMIC_TYPE_DOUBLE:
2843 case ATOMIC_TYPE_LONG_DOUBLE:
2844 tc = real_type_class;
2847 panic("Unexpected atomic type in classify_type_to_firm().");
2850 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2851 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2852 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2853 case TYPE_ARRAY: /* gcc handles this as pointer */
2854 case TYPE_FUNCTION: /* gcc handles this as pointer */
2855 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2856 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2857 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2859 /* gcc handles this as integer */
2860 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2862 /* gcc classifies the referenced type */
2863 case TYPE_REFERENCE: type = type->reference.refers_to; continue;
2866 /* typedef/typeof should be skipped already */
2873 panic("unexpected TYPE classify_type_to_firm().");
2877 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2878 ir_mode *const mode = mode_int;
2879 tarval *const tv = new_tarval_from_long(tc, mode);
2880 return new_d_Const(dbgi, mode, tv);
2883 static ir_node *function_name_to_firm(
2884 const funcname_expression_t *const expr)
2886 switch(expr->kind) {
2887 case FUNCNAME_FUNCTION:
2888 case FUNCNAME_PRETTY_FUNCTION:
2889 case FUNCNAME_FUNCDNAME:
2890 if (current_function_name == NULL) {
2891 const source_position_t *const src_pos = &expr->base.source_position;
2892 const char *name = current_function_entity->base.symbol->string;
2893 const string_t string = { name, strlen(name) + 1 };
2894 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2896 return current_function_name;
2897 case FUNCNAME_FUNCSIG:
2898 if (current_funcsig == NULL) {
2899 const source_position_t *const src_pos = &expr->base.source_position;
2900 ir_entity *ent = get_irg_entity(current_ir_graph);
2901 const char *const name = get_entity_ld_name(ent);
2902 const string_t string = { name, strlen(name) + 1 };
2903 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2905 return current_funcsig;
2907 panic("Unsupported function name");
2910 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2912 statement_t *statement = expr->statement;
2914 assert(statement->kind == STATEMENT_COMPOUND);
2915 return compound_statement_to_firm(&statement->compound);
2918 static ir_node *va_start_expression_to_firm(
2919 const va_start_expression_t *const expr)
2921 type_t *const type = current_function_entity->declaration.type;
2922 ir_type *const method_type = get_ir_type(type);
2923 int const n = get_method_n_params(method_type) - 1;
2924 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2925 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2926 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2927 ir_node *const no_mem = new_NoMem();
2928 ir_node *const arg_sel =
2929 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2931 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2932 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2933 set_value_for_expression(expr->ap, add);
2938 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2940 type_t *const type = expr->base.type;
2941 expression_t *const ap_expr = expr->ap;
2942 ir_node *const ap_addr = expression_to_addr(ap_expr);
2943 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2944 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2945 ir_node *const res = deref_address(dbgi, type, ap);
2947 ir_node *const cnst = get_type_size(expr->base.type);
2948 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2950 set_value_for_expression_addr(ap_expr, add, ap_addr);
2955 static ir_node *dereference_addr(const unary_expression_t *const expression)
2957 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2958 return expression_to_firm(expression->value);
2962 * Returns a IR-node representing an lvalue of the given expression.
2964 static ir_node *expression_to_addr(const expression_t *expression)
2966 switch(expression->kind) {
2967 case EXPR_REFERENCE:
2968 return reference_addr(&expression->reference);
2969 case EXPR_ARRAY_ACCESS:
2970 return array_access_addr(&expression->array_access);
2972 return select_addr(&expression->select);
2974 return call_expression_to_firm(&expression->call);
2975 case EXPR_UNARY_DEREFERENCE: {
2976 return dereference_addr(&expression->unary);
2981 panic("trying to get address of non-lvalue");
2984 static ir_node *builtin_constant_to_firm(
2985 const builtin_constant_expression_t *expression)
2987 ir_mode *mode = get_ir_mode(expression->base.type);
2990 if (is_constant_expression(expression->value)) {
2995 return new_Const_long(mode, v);
2998 static ir_node *builtin_prefetch_to_firm(
2999 const builtin_prefetch_expression_t *expression)
3001 ir_node *adr = expression_to_firm(expression->adr);
3002 /* no Firm support for prefetch yet */
3007 static ir_node *get_label_block(label_t *label)
3009 if (label->block != NULL)
3010 return label->block;
3012 /* beware: might be called from create initializer with current_ir_graph
3013 * set to const_code_irg. */
3014 ir_graph *rem = current_ir_graph;
3015 current_ir_graph = current_function;
3017 ir_node *old_cur_block = get_cur_block();
3018 ir_node *block = new_immBlock();
3019 set_cur_block(old_cur_block);
3021 label->block = block;
3023 ARR_APP1(label_t *, all_labels, label);
3025 current_ir_graph = rem;
3030 * Pointer to a label. This is used for the
3031 * GNU address-of-label extension.
3033 static ir_node *label_address_to_firm(
3034 const label_address_expression_t *label)
3036 ir_node *block = get_label_block(label->label);
3037 ir_label_t nr = get_Block_label(block);
3040 nr = get_irp_next_label_nr();
3041 set_Block_label(block, nr);
3043 symconst_symbol value;
3045 return new_SymConst(mode_P_code, value, symconst_label);
3049 * creates firm nodes for an expression. The difference between this function
3050 * and expression_to_firm is, that this version might produce mode_b nodes
3051 * instead of mode_Is.
3053 static ir_node *_expression_to_firm(const expression_t *expression)
3056 if (!constant_folding) {
3057 assert(!expression->base.transformed);
3058 ((expression_t*) expression)->base.transformed = true;
3062 switch (expression->kind) {
3063 case EXPR_CHARACTER_CONSTANT:
3064 return character_constant_to_firm(&expression->conste);
3065 case EXPR_WIDE_CHARACTER_CONSTANT:
3066 return wide_character_constant_to_firm(&expression->conste);
3068 return const_to_firm(&expression->conste);
3069 case EXPR_STRING_LITERAL:
3070 return string_literal_to_firm(&expression->string);
3071 case EXPR_WIDE_STRING_LITERAL:
3072 return wide_string_literal_to_firm(&expression->wide_string);
3073 case EXPR_REFERENCE:
3074 return reference_expression_to_firm(&expression->reference);
3075 case EXPR_REFERENCE_ENUM_VALUE:
3076 return reference_expression_enum_value_to_firm(&expression->reference);
3078 return call_expression_to_firm(&expression->call);
3080 return unary_expression_to_firm(&expression->unary);
3082 return binary_expression_to_firm(&expression->binary);
3083 case EXPR_ARRAY_ACCESS:
3084 return array_access_to_firm(&expression->array_access);
3086 return sizeof_to_firm(&expression->typeprop);
3088 return alignof_to_firm(&expression->typeprop);
3089 case EXPR_CONDITIONAL:
3090 return conditional_to_firm(&expression->conditional);
3092 return select_to_firm(&expression->select);
3093 case EXPR_CLASSIFY_TYPE:
3094 return classify_type_to_firm(&expression->classify_type);
3096 return function_name_to_firm(&expression->funcname);
3097 case EXPR_STATEMENT:
3098 return statement_expression_to_firm(&expression->statement);
3100 return va_start_expression_to_firm(&expression->va_starte);
3102 return va_arg_expression_to_firm(&expression->va_arge);
3103 case EXPR_BUILTIN_SYMBOL:
3104 panic("unimplemented expression found");
3105 case EXPR_BUILTIN_CONSTANT_P:
3106 return builtin_constant_to_firm(&expression->builtin_constant);
3107 case EXPR_BUILTIN_PREFETCH:
3108 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3110 return offsetof_to_firm(&expression->offsetofe);
3111 case EXPR_COMPOUND_LITERAL:
3112 return compound_literal_to_firm(&expression->compound_literal);
3113 case EXPR_LABEL_ADDRESS:
3114 return label_address_to_firm(&expression->label_address);
3120 panic("invalid expression found");
3123 static bool produces_mode_b(const expression_t *expression)
3125 switch (expression->kind) {
3126 case EXPR_BINARY_EQUAL:
3127 case EXPR_BINARY_NOTEQUAL:
3128 case EXPR_BINARY_LESS:
3129 case EXPR_BINARY_LESSEQUAL:
3130 case EXPR_BINARY_GREATER:
3131 case EXPR_BINARY_GREATEREQUAL:
3132 case EXPR_BINARY_ISGREATER:
3133 case EXPR_BINARY_ISGREATEREQUAL:
3134 case EXPR_BINARY_ISLESS:
3135 case EXPR_BINARY_ISLESSEQUAL:
3136 case EXPR_BINARY_ISLESSGREATER:
3137 case EXPR_BINARY_ISUNORDERED:
3138 case EXPR_UNARY_NOT:
3141 case EXPR_BINARY_BUILTIN_EXPECT:
3142 return produces_mode_b(expression->binary.left);
3143 case EXPR_BINARY_COMMA:
3144 return produces_mode_b(expression->binary.right);
3151 static ir_node *expression_to_firm(const expression_t *expression)
3153 if (!produces_mode_b(expression)) {
3154 ir_node *res = _expression_to_firm(expression);
3155 assert(res == NULL || get_irn_mode(res) != mode_b);
3159 if (is_constant_expression(expression)) {
3160 ir_node *res = _expression_to_firm(expression);
3161 ir_mode *mode = get_ir_mode(expression->base.type);
3162 assert(is_Const(res));
3163 if (is_Const_null(res)) {
3164 return new_Const_long(mode, 0);
3166 return new_Const_long(mode, 1);
3170 /* we have to produce a 0/1 from the mode_b expression */
3171 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3172 return produce_condition_result(expression, dbgi);
3176 * create a short-circuit expression evaluation that tries to construct
3177 * efficient control flow structures for &&, || and ! expressions
3179 static ir_node *create_condition_evaluation(const expression_t *expression,
3180 ir_node *true_block,
3181 ir_node *false_block)
3183 switch(expression->kind) {
3184 case EXPR_UNARY_NOT: {
3185 const unary_expression_t *unary_expression = &expression->unary;
3186 create_condition_evaluation(unary_expression->value, false_block,
3190 case EXPR_BINARY_LOGICAL_AND: {
3191 const binary_expression_t *binary_expression = &expression->binary;
3193 ir_node *cur_block = get_cur_block();
3194 ir_node *extra_block = new_immBlock();
3195 set_cur_block(cur_block);
3196 create_condition_evaluation(binary_expression->left, extra_block,
3198 mature_immBlock(extra_block);
3199 set_cur_block(extra_block);
3200 create_condition_evaluation(binary_expression->right, true_block,
3204 case EXPR_BINARY_LOGICAL_OR: {
3205 const binary_expression_t *binary_expression = &expression->binary;
3207 ir_node *cur_block = get_cur_block();
3208 ir_node *extra_block = new_immBlock();
3209 set_cur_block(cur_block);
3210 create_condition_evaluation(binary_expression->left, true_block,
3212 mature_immBlock(extra_block);
3213 set_cur_block(extra_block);
3214 create_condition_evaluation(binary_expression->right, true_block,
3222 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3223 ir_node *cond_expr = _expression_to_firm(expression);
3224 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3225 ir_node *cond = new_d_Cond(dbgi, condition);
3226 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3227 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3229 /* set branch prediction info based on __builtin_expect */
3230 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3231 long cnst = fold_constant(expression->binary.right);
3232 cond_jmp_predicate pred;
3235 pred = COND_JMP_PRED_FALSE;
3237 pred = COND_JMP_PRED_TRUE;
3239 set_Cond_jmp_pred(cond, pred);
3242 add_immBlock_pred(true_block, true_proj);
3243 if (false_block != NULL) {
3244 add_immBlock_pred(false_block, false_proj);
3247 set_cur_block(NULL);
3252 static void create_variable_entity(entity_t *variable,
3253 declaration_kind_t declaration_kind,
3254 ir_type *parent_type)
3256 assert(variable->kind == ENTITY_VARIABLE);
3257 type_t *const type = skip_typeref(variable->declaration.type);
3258 ident *const id = new_id_from_str(variable->base.symbol->string);
3259 ir_type *const irtype = get_ir_type(type);
3260 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3261 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3263 handle_gnu_attributes_ent(irentity, variable);
3265 variable->declaration.kind = (unsigned char) declaration_kind;
3266 variable->variable.v.entity = irentity;
3267 set_entity_variability(irentity, variability_uninitialized);
3268 set_entity_ld_ident(irentity, create_ld_ident(variable));
3269 if (parent_type == get_tls_type())
3270 set_entity_allocation(irentity, allocation_automatic);
3271 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3272 set_entity_allocation(irentity, allocation_static);
3274 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3275 set_entity_volatility(irentity, volatility_is_volatile);
3280 typedef struct type_path_entry_t type_path_entry_t;
3281 struct type_path_entry_t {
3283 ir_initializer_t *initializer;
3285 entity_t *compound_entry;
3288 typedef struct type_path_t type_path_t;
3289 struct type_path_t {
3290 type_path_entry_t *path;
3295 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3297 size_t len = ARR_LEN(path->path);
3299 for (size_t i = 0; i < len; ++i) {
3300 const type_path_entry_t *entry = & path->path[i];
3302 type_t *type = skip_typeref(entry->type);
3303 if (is_type_compound(type)) {
3304 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3305 } else if (is_type_array(type)) {
3306 fprintf(stderr, "[%u]", (unsigned) entry->index);
3308 fprintf(stderr, "-INVALID-");
3311 fprintf(stderr, " (");
3312 print_type(path->top_type);
3313 fprintf(stderr, ")");
3316 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3318 size_t len = ARR_LEN(path->path);
3320 return & path->path[len-1];
3323 static type_path_entry_t *append_to_type_path(type_path_t *path)
3325 size_t len = ARR_LEN(path->path);
3326 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3328 type_path_entry_t *result = & path->path[len];
3329 memset(result, 0, sizeof(result[0]));
3333 static size_t get_compound_member_count(const compound_type_t *type)
3335 compound_t *compound = type->compound;
3336 size_t n_members = 0;
3337 entity_t *member = compound->members.entities;
3338 for ( ; member != NULL; member = member->base.next) {
3345 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3347 type_t *orig_top_type = path->top_type;
3348 type_t *top_type = skip_typeref(orig_top_type);
3350 assert(is_type_compound(top_type) || is_type_array(top_type));
3352 if (ARR_LEN(path->path) == 0) {
3355 type_path_entry_t *top = get_type_path_top(path);
3356 ir_initializer_t *initializer = top->initializer;
3357 return get_initializer_compound_value(initializer, top->index);
3361 static void descend_into_subtype(type_path_t *path)
3363 type_t *orig_top_type = path->top_type;
3364 type_t *top_type = skip_typeref(orig_top_type);
3366 assert(is_type_compound(top_type) || is_type_array(top_type));
3368 ir_initializer_t *initializer = get_initializer_entry(path);
3370 type_path_entry_t *top = append_to_type_path(path);
3371 top->type = top_type;
3375 if (is_type_compound(top_type)) {
3376 compound_t *compound = top_type->compound.compound;
3377 entity_t *entry = compound->members.entities;
3379 top->compound_entry = entry;
3381 len = get_compound_member_count(&top_type->compound);
3382 if (entry != NULL) {
3383 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3384 path->top_type = entry->declaration.type;
3387 assert(is_type_array(top_type));
3388 assert(top_type->array.size > 0);
3391 path->top_type = top_type->array.element_type;
3392 len = top_type->array.size;
3394 if (initializer == NULL
3395 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3396 initializer = create_initializer_compound(len);
3397 /* we have to set the entry at the 2nd latest path entry... */
3398 size_t path_len = ARR_LEN(path->path);
3399 assert(path_len >= 1);
3401 type_path_entry_t *entry = & path->path[path_len-2];
3402 ir_initializer_t *tinitializer = entry->initializer;
3403 set_initializer_compound_value(tinitializer, entry->index,
3407 top->initializer = initializer;
3410 static void ascend_from_subtype(type_path_t *path)
3412 type_path_entry_t *top = get_type_path_top(path);
3414 path->top_type = top->type;
3416 size_t len = ARR_LEN(path->path);
3417 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3420 static void walk_designator(type_path_t *path, const designator_t *designator)
3422 /* designators start at current object type */
3423 ARR_RESIZE(type_path_entry_t, path->path, 1);
3425 for ( ; designator != NULL; designator = designator->next) {
3426 type_path_entry_t *top = get_type_path_top(path);
3427 type_t *orig_type = top->type;
3428 type_t *type = skip_typeref(orig_type);
3430 if (designator->symbol != NULL) {
3431 assert(is_type_compound(type));
3433 symbol_t *symbol = designator->symbol;
3435 compound_t *compound = type->compound.compound;
3436 entity_t *iter = compound->members.entities;
3437 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3438 if (iter->base.symbol == symbol) {
3439 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3443 assert(iter != NULL);
3445 top->type = orig_type;
3446 top->compound_entry = iter;
3448 orig_type = iter->declaration.type;
3450 expression_t *array_index = designator->array_index;
3451 assert(designator->array_index != NULL);
3452 assert(is_type_array(type));
3454 long index = fold_constant(array_index);
3457 if (type->array.size_constant) {
3458 long array_size = type->array.size;
3459 assert(index < array_size);
3463 top->type = orig_type;
3464 top->index = (size_t) index;
3465 orig_type = type->array.element_type;
3467 path->top_type = orig_type;
3469 if (designator->next != NULL) {
3470 descend_into_subtype(path);
3474 path->invalid = false;
3477 static void advance_current_object(type_path_t *path)
3479 if (path->invalid) {
3480 /* TODO: handle this... */
3481 panic("invalid initializer in ast2firm (excessive elements)");
3485 type_path_entry_t *top = get_type_path_top(path);
3487 type_t *type = skip_typeref(top->type);
3488 if (is_type_union(type)) {
3489 top->compound_entry = NULL;
3490 } else if (is_type_struct(type)) {
3491 entity_t *entry = top->compound_entry;
3494 entry = entry->base.next;
3495 top->compound_entry = entry;
3496 if (entry != NULL) {
3497 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3498 path->top_type = entry->declaration.type;
3502 assert(is_type_array(type));
3505 if (!type->array.size_constant || top->index < type->array.size) {
3510 /* we're past the last member of the current sub-aggregate, try if we
3511 * can ascend in the type hierarchy and continue with another subobject */
3512 size_t len = ARR_LEN(path->path);
3515 ascend_from_subtype(path);
3516 advance_current_object(path);
3518 path->invalid = true;
3523 static ir_initializer_t *create_ir_initializer(
3524 const initializer_t *initializer, type_t *type);
3526 static ir_initializer_t *create_ir_initializer_value(
3527 const initializer_value_t *initializer)
3529 if (is_type_compound(initializer->value->base.type)) {
3530 panic("initializer creation for compounds not implemented yet");
3532 ir_node *value = expression_to_firm(initializer->value);
3533 return create_initializer_const(value);
3536 /** test wether type can be initialized by a string constant */
3537 static bool is_string_type(type_t *type)
3540 if (is_type_pointer(type)) {
3541 inner = skip_typeref(type->pointer.points_to);
3542 } else if(is_type_array(type)) {
3543 inner = skip_typeref(type->array.element_type);
3548 return is_type_integer(inner);
3551 static ir_initializer_t *create_ir_initializer_list(
3552 const initializer_list_t *initializer, type_t *type)
3555 memset(&path, 0, sizeof(path));
3556 path.top_type = type;
3557 path.path = NEW_ARR_F(type_path_entry_t, 0);
3559 descend_into_subtype(&path);
3561 for (size_t i = 0; i < initializer->len; ++i) {
3562 const initializer_t *sub_initializer = initializer->initializers[i];
3564 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3565 walk_designator(&path, sub_initializer->designator.designator);
3569 if (sub_initializer->kind == INITIALIZER_VALUE) {
3570 /* we might have to descend into types until we're at a scalar
3573 type_t *orig_top_type = path.top_type;
3574 type_t *top_type = skip_typeref(orig_top_type);
3576 if (is_type_scalar(top_type))
3578 descend_into_subtype(&path);
3580 } else if (sub_initializer->kind == INITIALIZER_STRING
3581 || sub_initializer->kind == INITIALIZER_WIDE_STRING) {
3582 /* we might have to descend into types until we're at a scalar
3585 type_t *orig_top_type = path.top_type;
3586 type_t *top_type = skip_typeref(orig_top_type);
3588 if (is_string_type(top_type))
3590 descend_into_subtype(&path);
3594 ir_initializer_t *sub_irinitializer
3595 = create_ir_initializer(sub_initializer, path.top_type);
3597 size_t path_len = ARR_LEN(path.path);
3598 assert(path_len >= 1);
3599 type_path_entry_t *entry = & path.path[path_len-1];
3600 ir_initializer_t *tinitializer = entry->initializer;
3601 set_initializer_compound_value(tinitializer, entry->index,
3604 advance_current_object(&path);
3607 assert(ARR_LEN(path.path) >= 1);
3608 ir_initializer_t *result = path.path[0].initializer;
3609 DEL_ARR_F(path.path);
3614 static ir_initializer_t *create_ir_initializer_string(
3615 const initializer_string_t *initializer, type_t *type)
3617 type = skip_typeref(type);
3619 size_t string_len = initializer->string.size;
3620 assert(type->kind == TYPE_ARRAY);
3621 assert(type->array.size_constant);
3622 size_t len = type->array.size;
3623 ir_initializer_t *irinitializer = create_initializer_compound(len);
3625 const char *string = initializer->string.begin;
3626 ir_mode *mode = get_ir_mode(type->array.element_type);
3628 for (size_t i = 0; i < len; ++i) {
3633 tarval *tv = new_tarval_from_long(c, mode);
3634 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3636 set_initializer_compound_value(irinitializer, i, char_initializer);
3639 return irinitializer;
3642 static ir_initializer_t *create_ir_initializer_wide_string(
3643 const initializer_wide_string_t *initializer, type_t *type)
3645 size_t string_len = initializer->string.size;
3646 assert(type->kind == TYPE_ARRAY);
3647 assert(type->array.size_constant);
3648 size_t len = type->array.size;
3649 ir_initializer_t *irinitializer = create_initializer_compound(len);
3651 const wchar_rep_t *string = initializer->string.begin;
3652 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3654 for (size_t i = 0; i < len; ++i) {
3656 if (i < string_len) {
3659 tarval *tv = new_tarval_from_long(c, mode);
3660 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3662 set_initializer_compound_value(irinitializer, i, char_initializer);
3665 return irinitializer;
3668 static ir_initializer_t *create_ir_initializer(
3669 const initializer_t *initializer, type_t *type)
3671 switch(initializer->kind) {
3672 case INITIALIZER_STRING:
3673 return create_ir_initializer_string(&initializer->string, type);
3675 case INITIALIZER_WIDE_STRING:
3676 return create_ir_initializer_wide_string(&initializer->wide_string,
3679 case INITIALIZER_LIST:
3680 return create_ir_initializer_list(&initializer->list, type);
3682 case INITIALIZER_VALUE:
3683 return create_ir_initializer_value(&initializer->value);
3685 case INITIALIZER_DESIGNATOR:
3686 panic("unexpected designator initializer found");
3688 panic("unknown initializer");
3691 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3694 if (is_atomic_type(type)) {
3695 ir_mode *mode = get_type_mode(type);
3696 tarval *zero = get_mode_null(mode);
3697 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3699 /* TODO: bitfields */
3700 ir_node *mem = get_store();
3701 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3702 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3705 assert(is_compound_type(type));
3708 if (is_Array_type(type)) {
3709 assert(has_array_upper_bound(type, 0));
3710 n_members = get_array_upper_bound_int(type, 0);
3712 n_members = get_compound_n_members(type);
3715 for (int i = 0; i < n_members; ++i) {
3718 if (is_Array_type(type)) {
3719 ir_entity *entity = get_array_element_entity(type);
3720 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3721 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3722 ir_node *in[1] = { cnst };
3723 irtype = get_array_element_type(type);
3724 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3726 ir_entity *member = get_compound_member(type, i);
3728 irtype = get_entity_type(member);
3729 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3732 create_dynamic_null_initializer(irtype, dbgi, addr);
3737 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3738 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3740 switch(get_initializer_kind(initializer)) {
3741 case IR_INITIALIZER_NULL: {
3742 create_dynamic_null_initializer(type, dbgi, base_addr);
3745 case IR_INITIALIZER_CONST: {
3746 ir_node *node = get_initializer_const_value(initializer);
3747 ir_mode *mode = get_irn_mode(node);
3748 ir_type *ent_type = get_entity_type(entity);
3750 /* is it a bitfield type? */
3751 if (is_Primitive_type(ent_type) &&
3752 get_primitive_base_type(ent_type) != NULL) {
3753 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3757 assert(get_type_mode(type) == mode);
3758 ir_node *mem = get_store();
3759 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3760 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3764 case IR_INITIALIZER_TARVAL: {
3765 tarval *tv = get_initializer_tarval_value(initializer);
3766 ir_mode *mode = get_tarval_mode(tv);
3767 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3768 ir_type *ent_type = get_entity_type(entity);
3770 /* is it a bitfield type? */
3771 if (is_Primitive_type(ent_type) &&
3772 get_primitive_base_type(ent_type) != NULL) {
3773 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3777 assert(get_type_mode(type) == mode);
3778 ir_node *mem = get_store();
3779 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3780 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3784 case IR_INITIALIZER_COMPOUND: {
3785 assert(is_compound_type(type));
3787 if (is_Array_type(type)) {
3788 assert(has_array_upper_bound(type, 0));
3789 n_members = get_array_upper_bound_int(type, 0);
3791 n_members = get_compound_n_members(type);
3794 if (get_initializer_compound_n_entries(initializer)
3795 != (unsigned) n_members)
3796 panic("initializer doesn't match compound type");
3798 for (int i = 0; i < n_members; ++i) {
3801 ir_entity *sub_entity;
3802 if (is_Array_type(type)) {
3803 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3804 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3805 ir_node *in[1] = { cnst };
3806 irtype = get_array_element_type(type);
3807 sub_entity = get_array_element_entity(type);
3808 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3811 sub_entity = get_compound_member(type, i);
3812 irtype = get_entity_type(sub_entity);
3813 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3817 ir_initializer_t *sub_init
3818 = get_initializer_compound_value(initializer, i);
3820 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3827 panic("invalid IR_INITIALIZER found");
3830 static void create_dynamic_initializer(ir_initializer_t *initializer,
3831 dbg_info *dbgi, ir_entity *entity)
3833 ir_node *frame = get_local_frame(entity);
3834 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3835 ir_type *type = get_entity_type(entity);
3837 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3840 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3841 ir_entity *entity, type_t *type)
3843 ir_node *memory = get_store();
3844 ir_node *nomem = new_NoMem();
3845 ir_node *frame = get_irg_frame(current_ir_graph);
3846 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3848 if (initializer->kind == INITIALIZER_VALUE) {
3849 initializer_value_t *initializer_value = &initializer->value;
3851 ir_node *value = expression_to_firm(initializer_value->value);
3852 type = skip_typeref(type);
3853 assign_value(dbgi, addr, type, value);
3857 if (!is_constant_initializer(initializer)) {
3858 ir_initializer_t *irinitializer
3859 = create_ir_initializer(initializer, type);
3861 create_dynamic_initializer(irinitializer, dbgi, entity);
3865 /* create the ir_initializer */
3866 ir_graph *const old_current_ir_graph = current_ir_graph;
3867 current_ir_graph = get_const_code_irg();
3869 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3871 assert(current_ir_graph == get_const_code_irg());
3872 current_ir_graph = old_current_ir_graph;
3874 /* create a "template" entity which is copied to the entity on the stack */
3875 ident *const id = id_unique("initializer.%u");
3876 ir_type *const irtype = get_ir_type(type);
3877 ir_type *const global_type = get_glob_type();
3878 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3879 set_entity_ld_ident(init_entity, id);
3881 set_entity_variability(init_entity, variability_initialized);
3882 set_entity_visibility(init_entity, visibility_local);
3883 set_entity_allocation(init_entity, allocation_static);
3885 set_entity_initializer(init_entity, irinitializer);
3887 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3888 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3890 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3891 set_store(copyb_mem);
3894 static void create_initializer_local_variable_entity(entity_t *entity)
3896 assert(entity->kind == ENTITY_VARIABLE);
3897 initializer_t *initializer = entity->variable.initializer;
3898 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3899 ir_entity *irentity = entity->variable.v.entity;
3900 type_t *type = entity->declaration.type;
3901 create_local_initializer(initializer, dbgi, irentity, type);
3904 static void create_variable_initializer(entity_t *entity)
3906 assert(entity->kind == ENTITY_VARIABLE);
3907 initializer_t *initializer = entity->variable.initializer;
3908 if (initializer == NULL)
3911 declaration_kind_t declaration_kind
3912 = (declaration_kind_t) entity->declaration.kind;
3913 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3914 create_initializer_local_variable_entity(entity);
3918 type_t *type = entity->declaration.type;
3919 type_qualifiers_t tq = get_type_qualifier(type, true);
3921 if (initializer->kind == INITIALIZER_VALUE) {
3922 initializer_value_t *initializer_value = &initializer->value;
3923 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3925 ir_node *value = expression_to_firm(initializer_value->value);
3926 value = do_strict_conv(dbgi, value);
3928 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3929 set_value(entity->variable.v.value_number, value);
3931 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3933 ir_entity *irentity = entity->variable.v.entity;
3935 if (tq & TYPE_QUALIFIER_CONST) {
3936 set_entity_variability(irentity, variability_constant);
3938 set_entity_variability(irentity, variability_initialized);
3940 set_atomic_ent_value(irentity, value);
3943 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3944 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3946 ir_entity *irentity = entity->variable.v.entity;
3947 ir_initializer_t *irinitializer
3948 = create_ir_initializer(initializer, type);
3950 if (tq & TYPE_QUALIFIER_CONST) {
3951 set_entity_variability(irentity, variability_constant);
3953 set_entity_variability(irentity, variability_initialized);
3955 set_entity_initializer(irentity, irinitializer);
3959 static void create_variable_length_array(entity_t *entity)
3961 assert(entity->kind == ENTITY_VARIABLE);
3962 assert(entity->variable.initializer == NULL);
3964 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3965 entity->variable.v.vla_base = NULL;
3967 /* TODO: record VLA somewhere so we create the free node when we leave
3971 static void allocate_variable_length_array(entity_t *entity)
3973 assert(entity->kind == ENTITY_VARIABLE);
3974 assert(entity->variable.initializer == NULL);
3975 assert(get_cur_block() != NULL);
3977 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3978 type_t *type = entity->declaration.type;
3979 ir_type *el_type = get_ir_type(type->array.element_type);
3981 /* make sure size_node is calculated */
3982 get_type_size(type);
3983 ir_node *elems = type->array.size_node;
3984 ir_node *mem = get_store();
3985 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3987 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3988 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3991 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3992 entity->variable.v.vla_base = addr;
3996 * Creates a Firm local variable from a declaration.
3998 static void create_local_variable(entity_t *entity)
4000 assert(entity->kind == ENTITY_VARIABLE);
4001 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4003 bool needs_entity = entity->variable.address_taken;
4004 type_t *type = skip_typeref(entity->declaration.type);
4006 /* is it a variable length array? */
4007 if (is_type_array(type) && !type->array.size_constant) {
4008 create_variable_length_array(entity);
4010 } else if (is_type_array(type) || is_type_compound(type)) {
4011 needs_entity = true;
4012 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4013 needs_entity = true;
4017 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
4018 create_variable_entity(entity,
4019 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4022 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4023 entity->variable.v.value_number = next_value_number_function;
4024 set_irg_loc_description(current_ir_graph, next_value_number_function,
4025 (variable_t*) &entity->variable);
4026 ++next_value_number_function;
4030 static void create_local_static_variable(entity_t *entity)
4032 assert(entity->kind == ENTITY_VARIABLE);
4033 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4035 type_t *const type = skip_typeref(entity->declaration.type);
4036 ir_type *const var_type = entity->variable.thread_local ?
4037 get_tls_type() : get_glob_type();
4038 ir_type *const irtype = get_ir_type(type);
4039 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4041 size_t l = strlen(entity->base.symbol->string);
4042 char buf[l + sizeof(".%u")];
4043 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4044 ident *const id = id_unique(buf);
4046 ir_entity *const irentity = new_d_entity(var_type, id, irtype, dbgi);
4048 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4049 set_entity_volatility(irentity, volatility_is_volatile);
4052 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4053 entity->variable.v.entity = irentity;
4054 set_entity_ld_ident(irentity, id);
4055 set_entity_variability(irentity, variability_uninitialized);
4056 set_entity_visibility(irentity, visibility_local);
4057 set_entity_allocation(irentity, entity->variable.thread_local ?
4058 allocation_automatic : allocation_static);
4060 ir_graph *const old_current_ir_graph = current_ir_graph;
4061 current_ir_graph = get_const_code_irg();
4063 create_variable_initializer(entity);
4065 assert(current_ir_graph == get_const_code_irg());
4066 current_ir_graph = old_current_ir_graph;
4071 static void return_statement_to_firm(return_statement_t *statement)
4073 if (get_cur_block() == NULL)
4076 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4077 type_t *type = current_function_entity->declaration.type;
4078 ir_type *func_irtype = get_ir_type(type);
4083 if (get_method_n_ress(func_irtype) > 0) {
4084 ir_type *res_type = get_method_res_type(func_irtype, 0);
4086 if (statement->value != NULL) {
4087 ir_node *node = expression_to_firm(statement->value);
4088 node = do_strict_conv(dbgi, node);
4092 if (is_compound_type(res_type)) {
4095 mode = get_type_mode(res_type);
4097 in[0] = new_Unknown(mode);
4101 /* build return_value for its side effects */
4102 if (statement->value != NULL) {
4103 expression_to_firm(statement->value);
4108 ir_node *store = get_store();
4109 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4111 ir_node *end_block = get_irg_end_block(current_ir_graph);
4112 add_immBlock_pred(end_block, ret);
4114 set_cur_block(NULL);
4117 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4119 if (get_cur_block() == NULL)
4122 return expression_to_firm(statement->expression);
4125 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4127 entity_t *entity = compound->scope.entities;
4128 for ( ; entity != NULL; entity = entity->base.next) {
4129 if (!is_declaration(entity))
4132 create_local_declaration(entity);
4135 ir_node *result = NULL;
4136 statement_t *statement = compound->statements;
4137 for ( ; statement != NULL; statement = statement->base.next) {
4138 if (statement->base.next == NULL
4139 && statement->kind == STATEMENT_EXPRESSION) {
4140 result = expression_statement_to_firm(
4141 &statement->expression);
4144 statement_to_firm(statement);
4150 static void create_global_variable(entity_t *entity)
4152 assert(entity->kind == ENTITY_VARIABLE);
4155 switch ((storage_class_tag_t)entity->declaration.storage_class) {
4156 case STORAGE_CLASS_STATIC: vis = visibility_local; break;
4157 case STORAGE_CLASS_EXTERN: vis = visibility_external_allocated; break;
4158 case STORAGE_CLASS_NONE: vis = visibility_external_visible; break;
4160 default: panic("Invalid storage class for global variable");
4163 ir_type *var_type = entity->variable.thread_local ?
4164 get_tls_type() : get_glob_type();
4165 create_variable_entity(entity,
4166 DECLARATION_KIND_GLOBAL_VARIABLE, var_type);
4167 set_entity_visibility(entity->variable.v.entity, vis);
4170 static void create_local_declaration(entity_t *entity)
4172 assert(is_declaration(entity));
4174 /* construct type */
4175 (void) get_ir_type(entity->declaration.type);
4176 if (entity->base.symbol == NULL) {
4180 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4181 case STORAGE_CLASS_STATIC:
4182 create_local_static_variable(entity);
4184 case STORAGE_CLASS_EXTERN:
4185 if (entity->kind == ENTITY_FUNCTION) {
4186 assert(entity->function.statement == NULL);
4187 get_function_entity(entity);
4189 create_global_variable(entity);
4190 create_variable_initializer(entity);
4193 case STORAGE_CLASS_NONE:
4194 case STORAGE_CLASS_AUTO:
4195 case STORAGE_CLASS_REGISTER:
4196 if (entity->kind == ENTITY_FUNCTION) {
4197 if (entity->function.statement != NULL) {
4198 get_function_entity(entity);
4199 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4200 enqueue_inner_function(entity);
4202 get_function_entity(entity);
4205 create_local_variable(entity);
4208 case STORAGE_CLASS_TYPEDEF:
4211 panic("invalid storage class found");
4214 static void initialize_local_declaration(entity_t *entity)
4216 if (entity->base.symbol == NULL)
4219 switch ((declaration_kind_t) entity->declaration.kind) {
4220 case DECLARATION_KIND_LOCAL_VARIABLE:
4221 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4222 create_variable_initializer(entity);
4225 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4226 allocate_variable_length_array(entity);
4229 case DECLARATION_KIND_COMPOUND_MEMBER:
4230 case DECLARATION_KIND_GLOBAL_VARIABLE:
4231 case DECLARATION_KIND_FUNCTION:
4232 case DECLARATION_KIND_INNER_FUNCTION:
4235 case DECLARATION_KIND_UNKNOWN:
4236 panic("can't initialize unknown declaration");
4238 panic("invalid declaration kind");
4241 static void declaration_statement_to_firm(declaration_statement_t *statement)
4243 entity_t *entity = statement->declarations_begin;
4244 entity_t *end = statement->declarations_end->base.next;
4245 for ( ; entity != end; entity = entity->base.next) {
4246 if (!is_declaration(entity))
4248 initialize_local_declaration(entity);
4252 static void if_statement_to_firm(if_statement_t *statement)
4254 ir_node *cur_block = get_cur_block();
4256 ir_node *fallthrough_block = NULL;
4258 /* the true (blocks) */
4259 ir_node *true_block = NULL;
4260 if (statement->true_statement != NULL) {
4261 true_block = new_immBlock();
4262 statement_to_firm(statement->true_statement);
4263 if (get_cur_block() != NULL) {
4264 ir_node *jmp = new_Jmp();
4265 if (fallthrough_block == NULL)
4266 fallthrough_block = new_immBlock();
4267 add_immBlock_pred(fallthrough_block, jmp);
4271 /* the false (blocks) */
4272 ir_node *false_block = NULL;
4273 if (statement->false_statement != NULL) {
4274 false_block = new_immBlock();
4276 statement_to_firm(statement->false_statement);
4277 if (get_cur_block() != NULL) {
4278 ir_node *jmp = new_Jmp();
4279 if (fallthrough_block == NULL)
4280 fallthrough_block = new_immBlock();
4281 add_immBlock_pred(fallthrough_block, jmp);
4285 /* create the condition */
4286 if (cur_block != NULL) {
4287 if (true_block == NULL || false_block == NULL) {
4288 if (fallthrough_block == NULL)
4289 fallthrough_block = new_immBlock();
4290 if (true_block == NULL)
4291 true_block = fallthrough_block;
4292 if (false_block == NULL)
4293 false_block = fallthrough_block;
4296 set_cur_block(cur_block);
4297 create_condition_evaluation(statement->condition, true_block,
4301 mature_immBlock(true_block);
4302 if (false_block != fallthrough_block && false_block != NULL) {
4303 mature_immBlock(false_block);
4305 if (fallthrough_block != NULL) {
4306 mature_immBlock(fallthrough_block);
4309 set_cur_block(fallthrough_block);
4312 static void while_statement_to_firm(while_statement_t *statement)
4314 ir_node *jmp = NULL;
4315 if (get_cur_block() != NULL) {
4319 /* create the header block */
4320 ir_node *header_block = new_immBlock();
4322 add_immBlock_pred(header_block, jmp);
4326 ir_node *old_continue_label = continue_label;
4327 ir_node *old_break_label = break_label;
4328 continue_label = header_block;
4331 ir_node *body_block = new_immBlock();
4332 statement_to_firm(statement->body);
4333 ir_node *false_block = break_label;
4335 assert(continue_label == header_block);
4336 continue_label = old_continue_label;
4337 break_label = old_break_label;
4339 if (get_cur_block() != NULL) {
4341 add_immBlock_pred(header_block, jmp);
4344 /* shortcut for while(true) */
4345 if (is_constant_expression(statement->condition)
4346 && fold_constant(statement->condition) != 0) {
4347 set_cur_block(header_block);
4348 ir_node *header_jmp = new_Jmp();
4349 add_immBlock_pred(body_block, header_jmp);
4351 keep_alive(body_block);
4352 keep_all_memory(body_block);
4353 set_cur_block(body_block);
4355 if (false_block == NULL) {
4356 false_block = new_immBlock();
4359 /* create the condition */
4360 set_cur_block(header_block);
4362 create_condition_evaluation(statement->condition, body_block,
4366 mature_immBlock(body_block);
4367 mature_immBlock(header_block);
4368 if (false_block != NULL) {
4369 mature_immBlock(false_block);
4372 set_cur_block(false_block);
4375 static void do_while_statement_to_firm(do_while_statement_t *statement)
4377 ir_node *jmp = NULL;
4378 if (get_cur_block() != NULL) {
4382 /* create the header block */
4383 ir_node *header_block = new_immBlock();
4386 ir_node *body_block = new_immBlock();
4388 add_immBlock_pred(body_block, jmp);
4391 ir_node *old_continue_label = continue_label;
4392 ir_node *old_break_label = break_label;
4393 continue_label = header_block;
4396 statement_to_firm(statement->body);
4397 ir_node *false_block = break_label;
4399 assert(continue_label == header_block);
4400 continue_label = old_continue_label;
4401 break_label = old_break_label;
4403 if (get_cur_block() != NULL) {
4404 ir_node *body_jmp = new_Jmp();
4405 add_immBlock_pred(header_block, body_jmp);
4406 mature_immBlock(header_block);
4409 if (false_block == NULL) {
4410 false_block = new_immBlock();
4413 /* create the condition */
4414 set_cur_block(header_block);
4416 create_condition_evaluation(statement->condition, body_block, false_block);
4417 mature_immBlock(body_block);
4418 mature_immBlock(header_block);
4419 if (false_block != NULL) {
4420 mature_immBlock(false_block);
4423 set_cur_block(false_block);
4426 static void for_statement_to_firm(for_statement_t *statement)
4428 ir_node *jmp = NULL;
4430 /* create declarations */
4431 entity_t *entity = statement->scope.entities;
4432 for ( ; entity != NULL; entity = entity->base.next) {
4433 if (!is_declaration(entity))
4436 create_local_declaration(entity);
4439 if (get_cur_block() != NULL) {
4440 entity = statement->scope.entities;
4441 for ( ; entity != NULL; entity = entity->base.next) {
4442 if (!is_declaration(entity))
4445 initialize_local_declaration(entity);
4448 if (statement->initialisation != NULL) {
4449 expression_to_firm(statement->initialisation);
4456 /* create the step block */
4457 ir_node *const step_block = new_immBlock();
4458 if (statement->step != NULL) {
4459 expression_to_firm(statement->step);
4461 ir_node *const step_jmp = new_Jmp();
4463 /* create the header block */
4464 ir_node *const header_block = new_immBlock();
4466 add_immBlock_pred(header_block, jmp);
4468 add_immBlock_pred(header_block, step_jmp);
4470 /* the false block */
4471 ir_node *const false_block = new_immBlock();
4474 ir_node * body_block;
4475 if (statement->body != NULL) {
4476 ir_node *const old_continue_label = continue_label;
4477 ir_node *const old_break_label = break_label;
4478 continue_label = step_block;
4479 break_label = false_block;
4481 body_block = new_immBlock();
4482 statement_to_firm(statement->body);
4484 assert(continue_label == step_block);
4485 assert(break_label == false_block);
4486 continue_label = old_continue_label;
4487 break_label = old_break_label;
4489 if (get_cur_block() != NULL) {
4491 add_immBlock_pred(step_block, jmp);
4494 body_block = step_block;
4497 /* create the condition */
4498 set_cur_block(header_block);
4499 if (statement->condition != NULL) {
4500 create_condition_evaluation(statement->condition, body_block,
4503 keep_alive(header_block);
4504 keep_all_memory(header_block);
4506 add_immBlock_pred(body_block, jmp);
4509 mature_immBlock(body_block);
4510 mature_immBlock(false_block);
4511 mature_immBlock(step_block);
4512 mature_immBlock(header_block);
4513 mature_immBlock(false_block);
4515 set_cur_block(false_block);
4518 static void create_jump_statement(const statement_t *statement,
4519 ir_node *target_block)
4521 if (get_cur_block() == NULL)
4524 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4525 ir_node *jump = new_d_Jmp(dbgi);
4526 add_immBlock_pred(target_block, jump);
4528 set_cur_block(NULL);
4531 static ir_node *get_break_label(void)
4533 if (break_label == NULL) {
4534 ir_node *cur_block = get_cur_block();
4535 break_label = new_immBlock();
4536 set_cur_block(cur_block);
4541 static void switch_statement_to_firm(switch_statement_t *statement)
4543 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4545 ir_node *expression = expression_to_firm(statement->expression);
4546 ir_node *cond = new_d_Cond(dbgi, expression);
4548 set_cur_block(NULL);
4550 ir_node *const old_switch_cond = current_switch_cond;
4551 ir_node *const old_break_label = break_label;
4552 const bool old_saw_default_label = saw_default_label;
4553 saw_default_label = false;
4554 current_switch_cond = cond;
4556 switch_statement_t *const old_switch = current_switch;
4557 current_switch = statement;
4559 /* determine a free number for the default label */
4560 unsigned long num_cases = 0;
4562 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4563 if (l->expression == NULL) {
4567 if (l->last_case >= l->first_case)
4568 num_cases += l->last_case - l->first_case + 1;
4569 if (l->last_case > def_nr)
4570 def_nr = l->last_case;
4573 if (def_nr == INT_MAX) {
4574 /* Bad: an overflow will occurr, we cannot be sure that the
4575 * maximum + 1 is a free number. Scan the values a second
4576 * time to find a free number.
4578 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4580 memset(bits, 0, (num_cases + 7) >> 3);
4581 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4582 if (l->expression == NULL) {
4586 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4587 if (start < num_cases && l->last_case >= 0) {
4588 unsigned long end = (unsigned long)l->last_case < num_cases ?
4589 (unsigned long)l->last_case : num_cases - 1;
4590 for (unsigned long cns = start; cns <= end; ++cns) {
4591 bits[cns >> 3] |= (1 << (cns & 7));
4595 /* We look at the first num_cases constants:
4596 * Either they are densed, so we took the last (num_cases)
4597 * one, or they are non densed, so we will find one free
4601 for (i = 0; i < num_cases; ++i)
4602 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4610 statement->default_proj_nr = def_nr;
4612 if (statement->body != NULL) {
4613 statement_to_firm(statement->body);
4616 if (get_cur_block() != NULL) {
4617 ir_node *jmp = new_Jmp();
4618 add_immBlock_pred(get_break_label(), jmp);
4621 if (!saw_default_label) {
4622 set_cur_block(get_nodes_block(cond));
4623 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4624 statement->default_proj_nr);
4625 add_immBlock_pred(get_break_label(), proj);
4628 if (break_label != NULL) {
4629 mature_immBlock(break_label);
4631 set_cur_block(break_label);
4633 assert(current_switch_cond == cond);
4634 current_switch = old_switch;
4635 current_switch_cond = old_switch_cond;
4636 break_label = old_break_label;
4637 saw_default_label = old_saw_default_label;
4640 static void case_label_to_firm(const case_label_statement_t *statement)
4642 if (statement->is_empty_range)
4645 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4647 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4650 ir_node *old_block = get_nodes_block(current_switch_cond);
4651 ir_node *block = new_immBlock();
4653 set_cur_block(old_block);
4654 if (statement->expression != NULL) {
4655 long pn = statement->first_case;
4656 long end_pn = statement->last_case;
4657 assert(pn <= end_pn);
4658 /* create jumps for all cases in the given range */
4660 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4661 add_immBlock_pred(block, proj);
4662 } while(pn++ < end_pn);
4664 saw_default_label = true;
4665 proj = new_d_defaultProj(dbgi, current_switch_cond,
4666 current_switch->default_proj_nr);
4668 add_immBlock_pred(block, proj);
4671 if (fallthrough != NULL) {
4672 add_immBlock_pred(block, fallthrough);
4674 mature_immBlock(block);
4675 set_cur_block(block);
4677 if (statement->statement != NULL) {
4678 statement_to_firm(statement->statement);
4682 static void label_to_firm(const label_statement_t *statement)
4684 ir_node *block = get_label_block(statement->label);
4686 if (get_cur_block() != NULL) {
4687 ir_node *jmp = new_Jmp();
4688 add_immBlock_pred(block, jmp);
4691 set_cur_block(block);
4693 keep_all_memory(block);
4695 if (statement->statement != NULL) {
4696 statement_to_firm(statement->statement);
4700 static void goto_to_firm(const goto_statement_t *statement)
4702 if (get_cur_block() == NULL)
4705 if (statement->expression) {
4706 ir_node *irn = expression_to_firm(statement->expression);
4707 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4708 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4710 set_irn_link(ijmp, ijmp_list);
4713 ir_node *block = get_label_block(statement->label);
4714 ir_node *jmp = new_Jmp();
4715 add_immBlock_pred(block, jmp);
4717 set_cur_block(NULL);
4720 static void asm_statement_to_firm(const asm_statement_t *statement)
4722 bool needs_memory = false;
4724 if (statement->is_volatile) {
4725 needs_memory = true;
4728 size_t n_clobbers = 0;
4729 asm_clobber_t *clobber = statement->clobbers;
4730 for ( ; clobber != NULL; clobber = clobber->next) {
4731 const char *clobber_str = clobber->clobber.begin;
4733 if (!be_is_valid_clobber(clobber_str)) {
4734 errorf(&statement->base.source_position,
4735 "invalid clobber '%s' specified", clobber->clobber);
4739 if (strcmp(clobber_str, "memory") == 0) {
4740 needs_memory = true;
4744 ident *id = new_id_from_str(clobber_str);
4745 obstack_ptr_grow(&asm_obst, id);
4748 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4749 ident **clobbers = NULL;
4750 if (n_clobbers > 0) {
4751 clobbers = obstack_finish(&asm_obst);
4754 size_t n_inputs = 0;
4755 asm_argument_t *argument = statement->inputs;
4756 for ( ; argument != NULL; argument = argument->next)
4758 size_t n_outputs = 0;
4759 argument = statement->outputs;
4760 for ( ; argument != NULL; argument = argument->next)
4763 unsigned next_pos = 0;
4765 ir_node *ins[n_inputs + n_outputs + 1];
4768 ir_asm_constraint tmp_in_constraints[n_outputs];
4770 const expression_t *out_exprs[n_outputs];
4771 ir_node *out_addrs[n_outputs];
4772 size_t out_size = 0;
4774 argument = statement->outputs;
4775 for ( ; argument != NULL; argument = argument->next) {
4776 const char *constraints = argument->constraints.begin;
4777 asm_constraint_flags_t asm_flags
4778 = be_parse_asm_constraints(constraints);
4780 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4781 errorf(&statement->base.source_position,
4782 "some constraints in '%s' are not supported", constraints);
4785 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4786 errorf(&statement->base.source_position,
4787 "some constraints in '%s' are invalid", constraints);
4790 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4791 errorf(&statement->base.source_position,
4792 "no write flag specified for output constraints '%s'",
4797 unsigned pos = next_pos++;
4798 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4799 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4800 expression_t *expr = argument->expression;
4801 ir_node *addr = expression_to_addr(expr);
4802 /* in+output, construct an artifical same_as constraint on the
4804 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4806 ir_node *value = get_value_from_lvalue(expr, addr);
4808 snprintf(buf, sizeof(buf), "%u", pos);
4810 ir_asm_constraint constraint;
4811 constraint.pos = pos;
4812 constraint.constraint = new_id_from_str(buf);
4813 constraint.mode = get_ir_mode(expr->base.type);
4814 tmp_in_constraints[in_size] = constraint;
4815 ins[in_size] = value;
4820 out_exprs[out_size] = expr;
4821 out_addrs[out_size] = addr;
4823 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4824 /* pure memory ops need no input (but we have to make sure we
4825 * attach to the memory) */
4826 assert(! (asm_flags &
4827 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4828 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4829 needs_memory = true;
4831 /* we need to attach the address to the inputs */
4832 expression_t *expr = argument->expression;
4834 ir_asm_constraint constraint;
4835 constraint.pos = pos;
4836 constraint.constraint = new_id_from_str(constraints);
4837 constraint.mode = NULL;
4838 tmp_in_constraints[in_size] = constraint;
4840 ins[in_size] = expression_to_addr(expr);
4844 errorf(&statement->base.source_position,
4845 "only modifiers but no place set in constraints '%s'",
4850 ir_asm_constraint constraint;
4851 constraint.pos = pos;
4852 constraint.constraint = new_id_from_str(constraints);
4853 constraint.mode = get_ir_mode(argument->expression->base.type);
4855 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4857 assert(obstack_object_size(&asm_obst)
4858 == out_size * sizeof(ir_asm_constraint));
4859 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4862 obstack_grow(&asm_obst, tmp_in_constraints,
4863 in_size * sizeof(tmp_in_constraints[0]));
4864 /* find and count input and output arguments */
4865 argument = statement->inputs;
4866 for ( ; argument != NULL; argument = argument->next) {
4867 const char *constraints = argument->constraints.begin;
4868 asm_constraint_flags_t asm_flags
4869 = be_parse_asm_constraints(constraints);
4871 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4872 errorf(&statement->base.source_position,
4873 "some constraints in '%s' are not supported", constraints);
4876 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4877 errorf(&statement->base.source_position,
4878 "some constraints in '%s' are invalid", constraints);
4881 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4882 errorf(&statement->base.source_position,
4883 "write flag specified for input constraints '%s'",
4889 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4890 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4891 /* we can treat this as "normal" input */
4892 input = expression_to_firm(argument->expression);
4893 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4894 /* pure memory ops need no input (but we have to make sure we
4895 * attach to the memory) */
4896 assert(! (asm_flags &
4897 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4898 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4899 needs_memory = true;
4900 input = expression_to_addr(argument->expression);
4902 errorf(&statement->base.source_position,
4903 "only modifiers but no place set in constraints '%s'",
4908 ir_asm_constraint constraint;
4909 constraint.pos = next_pos++;
4910 constraint.constraint = new_id_from_str(constraints);
4911 constraint.mode = get_irn_mode(input);
4913 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4914 ins[in_size++] = input;
4918 ir_asm_constraint constraint;
4919 constraint.pos = next_pos++;
4920 constraint.constraint = new_id_from_str("");
4921 constraint.mode = mode_M;
4923 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4924 ins[in_size++] = get_store();
4927 assert(obstack_object_size(&asm_obst)
4928 == in_size * sizeof(ir_asm_constraint));
4929 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4931 /* create asm node */
4932 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4934 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4936 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4937 out_size, output_constraints,
4938 n_clobbers, clobbers, asm_text);
4940 if (statement->is_volatile) {
4941 set_irn_pinned(node, op_pin_state_pinned);
4943 set_irn_pinned(node, op_pin_state_floats);
4946 /* create output projs & connect them */
4948 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4953 for (i = 0; i < out_size; ++i) {
4954 const expression_t *out_expr = out_exprs[i];
4956 ir_mode *mode = get_ir_mode(out_expr->base.type);
4957 ir_node *proj = new_Proj(node, mode, pn);
4958 ir_node *addr = out_addrs[i];
4960 set_value_for_expression_addr(out_expr, proj, addr);
4964 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4965 statement_to_firm(statement->try_statement);
4966 warningf(&statement->base.source_position, "structured exception handling ignored");
4969 static void leave_statement_to_firm(leave_statement_t *statement) {
4970 errorf(&statement->base.source_position, "__leave not supported yet");
4974 * Transform a statement.
4976 static void statement_to_firm(statement_t *statement)
4979 assert(!statement->base.transformed);
4980 statement->base.transformed = true;
4983 switch (statement->kind) {
4984 case STATEMENT_INVALID:
4985 panic("invalid statement found");
4987 case STATEMENT_EMPTY:
4990 case STATEMENT_COMPOUND:
4991 compound_statement_to_firm(&statement->compound);
4993 case STATEMENT_RETURN:
4994 return_statement_to_firm(&statement->returns);
4996 case STATEMENT_EXPRESSION:
4997 expression_statement_to_firm(&statement->expression);
5000 if_statement_to_firm(&statement->ifs);
5002 case STATEMENT_WHILE:
5003 while_statement_to_firm(&statement->whiles);
5005 case STATEMENT_DO_WHILE:
5006 do_while_statement_to_firm(&statement->do_while);
5008 case STATEMENT_DECLARATION:
5009 declaration_statement_to_firm(&statement->declaration);
5011 case STATEMENT_BREAK:
5012 create_jump_statement(statement, get_break_label());
5014 case STATEMENT_CONTINUE:
5015 create_jump_statement(statement, continue_label);
5017 case STATEMENT_SWITCH:
5018 switch_statement_to_firm(&statement->switchs);
5020 case STATEMENT_CASE_LABEL:
5021 case_label_to_firm(&statement->case_label);
5024 for_statement_to_firm(&statement->fors);
5026 case STATEMENT_LABEL:
5027 label_to_firm(&statement->label);
5029 case STATEMENT_LOCAL_LABEL:
5030 /* local labels transform the semantics of labels while parsing
5031 * they don't need any special treatment here */
5033 case STATEMENT_GOTO:
5034 goto_to_firm(&statement->gotos);
5037 asm_statement_to_firm(&statement->asms);
5039 case STATEMENT_MS_TRY:
5040 ms_try_statement_to_firm(&statement->ms_try);
5042 case STATEMENT_LEAVE:
5043 leave_statement_to_firm(&statement->leave);
5046 panic("Statement not implemented\n");
5049 static int count_local_variables(const entity_t *entity,
5050 const entity_t *const end)
5053 for (; entity != end; entity = entity->base.next) {
5054 if (entity->kind != ENTITY_VARIABLE)
5056 type_t *type = skip_typeref(entity->declaration.type);
5058 if (!entity->variable.address_taken && is_type_scalar(type))
5064 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5066 int *const count = env;
5068 switch (stmt->kind) {
5069 case STATEMENT_DECLARATION: {
5070 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5071 *count += count_local_variables(decl_stmt->declarations_begin,
5072 decl_stmt->declarations_end->base.next);
5077 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5085 static int get_function_n_local_vars(entity_t *entity)
5089 /* count parameters */
5090 count += count_local_variables(entity->function.parameters.entities, NULL);
5092 /* count local variables declared in body */
5093 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5098 static void initialize_function_parameters(entity_t *entity)
5100 assert(entity->kind == ENTITY_FUNCTION);
5101 ir_graph *irg = current_ir_graph;
5102 ir_node *args = get_irg_args(irg);
5103 ir_node *start_block = get_irg_start_block(irg);
5104 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5107 entity_t *parameter = entity->function.parameters.entities;
5108 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5109 assert(parameter->kind == ENTITY_VARIABLE);
5110 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5111 type_t *type = skip_typeref(parameter->declaration.type);
5113 bool needs_entity = parameter->variable.address_taken;
5114 assert(!is_type_array(type));
5115 if (is_type_compound(type)) {
5116 needs_entity = true;
5120 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5121 ident *id = new_id_from_str(parameter->base.symbol->string);
5122 set_entity_ident(entity, id);
5124 parameter->declaration.kind
5125 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5126 parameter->variable.v.entity = entity;
5130 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5131 ir_mode *param_mode = get_type_mode(param_irtype);
5134 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5136 ir_mode *mode = get_ir_mode(type);
5137 value = create_conv(NULL, value, mode);
5138 value = do_strict_conv(NULL, value);
5140 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5141 parameter->variable.v.value_number = next_value_number_function;
5142 set_irg_loc_description(current_ir_graph, next_value_number_function,
5143 (variable_t*) ¶meter->variable);
5144 ++next_value_number_function;
5146 set_value(parameter->variable.v.value_number, value);
5151 * Handle additional decl modifiers for IR-graphs
5153 * @param irg the IR-graph
5154 * @param dec_modifiers additional modifiers
5156 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5158 if (decl_modifiers & DM_NORETURN) {
5159 /* TRUE if the declaration includes the Microsoft
5160 __declspec(noreturn) specifier. */
5161 set_irg_additional_property(irg, mtp_property_noreturn);
5163 if (decl_modifiers & DM_NOTHROW) {
5164 /* TRUE if the declaration includes the Microsoft
5165 __declspec(nothrow) specifier. */
5166 set_irg_additional_property(irg, mtp_property_nothrow);
5168 if (decl_modifiers & DM_NAKED) {
5169 /* TRUE if the declaration includes the Microsoft
5170 __declspec(naked) specifier. */
5171 set_irg_additional_property(irg, mtp_property_naked);
5173 if (decl_modifiers & DM_FORCEINLINE) {
5174 /* TRUE if the declaration includes the
5175 Microsoft __forceinline specifier. */
5176 set_irg_inline_property(irg, irg_inline_forced);
5178 if (decl_modifiers & DM_NOINLINE) {
5179 /* TRUE if the declaration includes the Microsoft
5180 __declspec(noinline) specifier. */
5181 set_irg_inline_property(irg, irg_inline_forbidden);
5185 static void add_function_pointer(ir_type *segment, ir_entity *method,
5186 const char *unique_template)
5188 ir_type *method_type = get_entity_type(method);
5189 ident *id = id_unique(unique_template);
5190 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5192 ident *ide = id_unique(unique_template);
5193 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5194 ir_graph *irg = get_const_code_irg();
5195 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5198 set_entity_compiler_generated(ptr, 1);
5199 set_entity_variability(ptr, variability_constant);
5200 set_atomic_ent_value(ptr, val);
5204 * Generate possible IJmp branches to a given label block.
5206 static void gen_ijmp_branches(ir_node *block) {
5208 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5209 add_immBlock_pred(block, ijmp);
5214 * Create code for a function.
5216 static void create_function(entity_t *entity)
5218 assert(entity->kind == ENTITY_FUNCTION);
5219 ir_entity *function_entity = get_function_entity(entity);
5221 if (entity->function.statement == NULL)
5224 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5225 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5226 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5228 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5229 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5230 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5233 current_function_entity = entity;
5234 current_function_name = NULL;
5235 current_funcsig = NULL;
5237 assert(all_labels == NULL);
5238 all_labels = NEW_ARR_F(label_t *, 0);
5241 int n_local_vars = get_function_n_local_vars(entity);
5242 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5244 ir_graph *old_current_function = current_function;
5245 current_function = irg;
5247 set_irg_fp_model(irg, firm_opt.fp_model);
5248 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5249 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5251 ir_node *first_block = get_cur_block();
5253 /* set inline flags */
5254 if (entity->function.is_inline)
5255 set_irg_inline_property(irg, irg_inline_recomended);
5256 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5258 next_value_number_function = 0;
5259 initialize_function_parameters(entity);
5261 statement_to_firm(entity->function.statement);
5263 ir_node *end_block = get_irg_end_block(irg);
5265 /* do we have a return statement yet? */
5266 if (get_cur_block() != NULL) {
5267 type_t *type = skip_typeref(entity->declaration.type);
5268 assert(is_type_function(type));
5269 const function_type_t *func_type = &type->function;
5270 const type_t *return_type
5271 = skip_typeref(func_type->return_type);
5274 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5275 ret = new_Return(get_store(), 0, NULL);
5278 if (is_type_scalar(return_type)) {
5279 mode = get_ir_mode(func_type->return_type);
5285 /* ยง5.1.2.2.3 main implicitly returns 0 */
5286 if (is_main(entity)) {
5287 in[0] = new_Const(mode, get_mode_null(mode));
5289 in[0] = new_Unknown(mode);
5291 ret = new_Return(get_store(), 1, in);
5293 add_immBlock_pred(end_block, ret);
5296 bool has_computed_gotos = false;
5297 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5298 label_t *label = all_labels[i];
5299 if (label->address_taken) {
5300 gen_ijmp_branches(label->block);
5301 has_computed_gotos = true;
5303 mature_immBlock(label->block);
5305 if (has_computed_gotos) {
5306 /* if we have computed goto's in the function, we cannot inline it */
5307 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5308 warningf(&entity->base.source_position,
5309 "function '%Y' can never be inlined because it contains a computed goto",
5310 entity->base.symbol);
5312 set_irg_inline_property(irg, irg_inline_forbidden);
5315 DEL_ARR_F(all_labels);
5318 mature_immBlock(first_block);
5319 mature_immBlock(end_block);
5321 irg_finalize_cons(irg);
5323 /* finalize the frame type */
5324 ir_type *frame_type = get_irg_frame_type(irg);
5325 int n = get_compound_n_members(frame_type);
5328 for (int i = 0; i < n; ++i) {
5329 ir_entity *entity = get_compound_member(frame_type, i);
5330 ir_type *entity_type = get_entity_type(entity);
5332 int align = get_type_alignment_bytes(entity_type);
5333 if (align > align_all)
5337 misalign = offset % align;
5339 offset += align - misalign;
5343 set_entity_offset(entity, offset);
5344 offset += get_type_size_bytes(entity_type);
5346 set_type_size_bytes(frame_type, offset);
5347 set_type_alignment_bytes(frame_type, align_all);
5350 current_function = old_current_function;
5352 /* create inner functions */
5354 for (inner = next_inner_function(); inner != NULL;
5355 inner = next_inner_function()) {
5356 create_function(inner);
5360 static void scope_to_firm(scope_t *scope)
5362 /* first pass: create declarations */
5363 entity_t *entity = scope->entities;
5364 for ( ; entity != NULL; entity = entity->base.next) {
5365 if (entity->base.symbol == NULL)
5368 if (entity->kind == ENTITY_FUNCTION) {
5369 get_function_entity(entity);
5370 } else if (entity->kind == ENTITY_VARIABLE) {
5371 create_global_variable(entity);
5375 /* second pass: create code/initializers */
5376 entity = scope->entities;
5377 for ( ; entity != NULL; entity = entity->base.next) {
5378 if (entity->base.symbol == NULL)
5381 if (entity->kind == ENTITY_FUNCTION) {
5382 create_function(entity);
5383 } else if (entity->kind == ENTITY_VARIABLE) {
5384 assert(entity->declaration.kind
5385 == DECLARATION_KIND_GLOBAL_VARIABLE);
5386 current_ir_graph = get_const_code_irg();
5387 create_variable_initializer(entity);
5392 void init_ast2firm(void)
5394 obstack_init(&asm_obst);
5395 init_atomic_modes();
5397 /* OS option must be set to the backend */
5398 switch (firm_opt.os_support) {
5399 case OS_SUPPORT_MINGW:
5400 create_ld_ident = create_name_win32;
5402 case OS_SUPPORT_LINUX:
5403 create_ld_ident = create_name_linux_elf;
5405 case OS_SUPPORT_MACHO:
5406 create_ld_ident = create_name_macho;
5409 panic("unexpected OS support mode");
5412 /* create idents for all known runtime functions */
5413 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5414 rts_idents[i] = new_id_from_str(rts_data[i].name);
5417 entitymap_init(&entitymap);
5420 static void init_ir_types(void)
5422 static int ir_types_initialized = 0;
5423 if (ir_types_initialized)
5425 ir_types_initialized = 1;
5427 ir_type_int = get_ir_type(type_int);
5428 ir_type_const_char = get_ir_type(type_const_char);
5429 ir_type_wchar_t = get_ir_type(type_wchar_t);
5430 ir_type_void = get_ir_type(type_void);
5433 void exit_ast2firm(void)
5435 entitymap_destroy(&entitymap);
5436 obstack_free(&asm_obst, NULL);
5439 static void global_asm_to_firm(statement_t *s)
5441 for (; s != NULL; s = s->base.next) {
5442 assert(s->kind == STATEMENT_ASM);
5444 char const *const text = s->asms.asm_text.begin;
5445 size_t size = s->asms.asm_text.size;
5447 /* skip the last \0 */
5448 if (text[size - 1] == '\0')
5451 ident *const id = new_id_from_chars(text, size);
5456 void translation_unit_to_firm(translation_unit_t *unit)
5458 /* just to be sure */
5459 continue_label = NULL;
5461 current_switch_cond = NULL;
5462 current_translation_unit = unit;
5465 inner_functions = NEW_ARR_F(entity_t *, 0);
5467 scope_to_firm(&unit->scope);
5468 global_asm_to_firm(unit->global_asm);
5470 DEL_ARR_F(inner_functions);
5471 inner_functions = NULL;
5473 current_ir_graph = NULL;
5474 current_translation_unit = NULL;