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 "walk_statements.h"
46 #include "entitymap_t.h"
47 #include "driver/firm_opt.h"
48 #include "driver/firm_cmdline.h"
50 /* some idents needed for name mangling */
51 static ident *id_underscore;
54 static ir_type *ir_type_const_char;
55 static ir_type *ir_type_wchar_t;
56 static ir_type *ir_type_void;
57 static ir_type *ir_type_int;
59 static int next_value_number_function;
60 static ir_node *continue_label;
61 static ir_node *break_label;
62 static ir_node *current_switch_cond;
63 static bool saw_default_label;
64 static label_t **all_labels;
65 static entity_t **inner_functions;
66 static ir_node *ijmp_list;
67 static bool constant_folding;
69 extern bool have_const_functions;
71 static const entity_t *current_function_entity;
72 static ir_node *current_function_name;
73 static ir_node *current_funcsig;
74 static switch_statement_t *current_switch;
75 static ir_graph *current_function;
77 static entitymap_t entitymap;
79 static struct obstack asm_obst;
81 typedef enum declaration_kind_t {
82 DECLARATION_KIND_UNKNOWN,
83 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
84 DECLARATION_KIND_GLOBAL_VARIABLE,
85 DECLARATION_KIND_LOCAL_VARIABLE,
86 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
87 DECLARATION_KIND_FUNCTION,
88 DECLARATION_KIND_COMPOUND_MEMBER,
89 DECLARATION_KIND_INNER_FUNCTION
92 static ir_type *get_ir_type(type_t *type);
93 static ir_type *get_ir_type_incomplete(type_t *type);
95 static void enqueue_inner_function(entity_t *entity)
97 ARR_APP1(entity_t*, inner_functions, entity);
100 static entity_t *next_inner_function(void)
102 int len = ARR_LEN(inner_functions);
106 entity_t *entity = inner_functions[len-1];
107 ARR_SHRINKLEN(inner_functions, len-1);
112 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
114 const variable_t *variable = get_irg_loc_description(irg, pos);
116 if (variable != NULL) {
117 warningf(&variable->base.base.source_position,
118 "variable '%#T' might be used uninitialized",
119 variable->base.type, variable->base.base.symbol);
121 return new_r_Unknown(irg, mode);
124 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
126 const source_position_t *pos = (const source_position_t*) dbg;
129 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
133 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
135 const source_position_t *pos = (const source_position_t*) dbg;
140 return pos->input_name;
143 static dbg_info *get_dbg_info(const source_position_t *pos)
145 return (dbg_info*) pos;
148 static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
150 static ir_mode *mode_int, *mode_uint;
152 static ir_node *_expression_to_firm(const expression_t *expression);
153 static ir_node *expression_to_firm(const expression_t *expression);
154 static inline ir_mode *get_ir_mode(type_t *type);
155 static void create_local_declaration(entity_t *entity);
157 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
159 unsigned flags = get_atomic_type_flags(kind);
160 unsigned size = get_atomic_type_size(kind);
161 if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
162 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
165 unsigned bit_size = size * 8;
166 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
167 ir_mode_arithmetic arithmetic;
169 if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
170 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
171 snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
173 sort = irms_int_number;
174 arithmetic = irma_twos_complement;
176 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
177 snprintf(name, sizeof(name), "F%u", bit_size);
178 sort = irms_float_number;
179 arithmetic = irma_ieee754;
181 /* note: modulo_shift is 0, as in C it's undefined anyway to shift
182 * a too big amount */
183 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
191 * Initialises the atomic modes depending on the machine size.
193 static void init_atomic_modes(void)
195 for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
196 atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
198 mode_int = atomic_modes[ATOMIC_TYPE_INT];
199 mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
201 /* there's no real void type in firm */
202 atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
204 /* initialize pointer modes */
206 ir_mode_sort sort = irms_reference;
207 unsigned bit_size = machine_size;
209 ir_mode_arithmetic arithmetic = irma_twos_complement;
210 unsigned modulo_shift
211 = bit_size < machine_size ? machine_size : bit_size;
213 snprintf(name, sizeof(name), "p%u", machine_size);
214 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
217 set_reference_mode_signed_eq(ptr_mode, atomic_modes[get_intptr_kind()]);
218 set_reference_mode_unsigned_eq(ptr_mode, atomic_modes[get_uintptr_kind()]);
220 /* Hmm, pointers should be machine size */
221 set_modeP_data(ptr_mode);
222 set_modeP_code(ptr_mode);
225 ir_mode *get_atomic_mode(atomic_type_kind_t kind)
227 assert(kind <= ATOMIC_TYPE_LAST);
228 return atomic_modes[kind];
231 static unsigned get_compound_type_size(compound_type_t *type)
233 ir_type *irtype = get_ir_type((type_t*) type);
234 return get_type_size_bytes(irtype);
237 static unsigned get_array_type_size(array_type_t *type)
239 assert(!type->is_vla);
240 ir_type *irtype = get_ir_type((type_t*) type);
241 return get_type_size_bytes(irtype);
244 static unsigned get_type_size_const(type_t *type)
248 panic("error type occurred");
250 return get_atomic_type_size(type->atomic.akind);
252 return 2 * get_atomic_type_size(type->complex.akind);
254 return get_atomic_type_size(type->imaginary.akind);
256 return get_mode_size_bytes(mode_int);
257 case TYPE_COMPOUND_UNION:
258 case TYPE_COMPOUND_STRUCT:
259 return get_compound_type_size(&type->compound);
261 /* just a pointer to the function */
262 return get_mode_size_bytes(mode_P_code);
264 return get_mode_size_bytes(mode_P_data);
266 return get_array_type_size(&type->array);
268 return get_type_size_const(type->builtin.real_type);
270 panic("type size of bitfield request");
276 panic("Trying to determine size of invalid type");
279 static ir_node *get_type_size(type_t *type)
281 type = skip_typeref(type);
283 if (is_type_array(type) && type->array.is_vla) {
284 ir_node *size_node = type->array.size_node;
285 if (size_node == NULL) {
286 size_node = expression_to_firm(type->array.size_expression);
287 assert(!is_Const(size_node));
288 type->array.size_node = size_node;
291 ir_node *elem_size = get_type_size(type->array.element_type);
292 ir_mode *mode = get_irn_mode(size_node);
293 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
297 ir_mode *mode = get_ir_mode(type_size_t);
299 sym.type_p = get_ir_type(type);
300 return new_SymConst(mode, sym, symconst_type_size);
303 static unsigned count_parameters(const function_type_t *function_type)
307 function_parameter_t *parameter = function_type->parameters;
308 for ( ; parameter != NULL; parameter = parameter->next) {
316 * Creates a Firm type for an atomic type
318 static ir_type *create_atomic_type(const atomic_type_t *type)
320 atomic_type_kind_t kind = type->akind;
321 ir_mode *mode = atomic_modes[kind];
322 ident *id = get_mode_ident(mode);
323 ir_type *irtype = new_type_primitive(id, mode);
325 set_type_alignment_bytes(irtype, type->base.alignment);
331 * Creates a Firm type for a complex type
333 static ir_type *create_complex_type(const complex_type_t *type)
335 atomic_type_kind_t kind = type->akind;
336 ir_mode *mode = atomic_modes[kind];
337 ident *id = get_mode_ident(mode);
341 /* FIXME: finish the array */
346 * Creates a Firm type for an imaginary type
348 static ir_type *create_imaginary_type(const imaginary_type_t *type)
350 atomic_type_kind_t kind = type->akind;
351 ir_mode *mode = atomic_modes[kind];
352 ident *id = get_mode_ident(mode);
353 ir_type *irtype = new_type_primitive(id, mode);
355 set_type_alignment_bytes(irtype, type->base.alignment);
361 * return type of a parameter (and take transparent union gnu extension into
364 static type_t *get_parameter_type(type_t *type)
366 type = skip_typeref(type);
367 if (type->base.modifiers & TYPE_MODIFIER_TRANSPARENT_UNION) {
368 compound_t *compound = type->compound.compound;
369 type = compound->members.entities->declaration.type;
375 static ir_type *create_method_type(const function_type_t *function_type)
377 type_t *return_type = skip_typeref(function_type->return_type);
379 ident *id = id_unique("functiontype.%u");
380 int n_parameters = count_parameters(function_type);
381 int n_results = return_type == type_void ? 0 : 1;
382 ir_type *irtype = new_type_method(id, n_parameters, n_results);
384 if (return_type != type_void) {
385 ir_type *restype = get_ir_type(return_type);
386 set_method_res_type(irtype, 0, restype);
389 function_parameter_t *parameter = function_type->parameters;
391 for ( ; parameter != NULL; parameter = parameter->next) {
392 type_t *type = get_parameter_type(parameter->type);
393 ir_type *p_irtype = get_ir_type(type);
394 set_method_param_type(irtype, n, p_irtype);
398 if (function_type->variadic || function_type->unspecified_parameters) {
399 set_method_variadicity(irtype, variadicity_variadic);
402 unsigned cc = get_method_calling_convention(irtype);
403 switch (function_type->calling_convention) {
404 case CC_DEFAULT: /* unspecified calling convention, equal to one of the other, typically cdecl */
407 set_method_calling_convention(irtype, SET_CDECL(cc));
411 if (function_type->variadic || function_type->unspecified_parameters)
414 /* only non-variadic function can use stdcall, else use cdecl */
415 set_method_calling_convention(irtype, SET_STDCALL(cc));
419 if (function_type->variadic || function_type->unspecified_parameters)
421 /* only non-variadic function can use fastcall, else use cdecl */
422 set_method_calling_convention(irtype, SET_FASTCALL(cc));
426 /* 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_array_type(array_type_t *type)
444 type_t *element_type = type->element_type;
445 ir_type *ir_element_type = get_ir_type(element_type);
447 ident *id = id_unique("array.%u");
448 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
450 const int align = get_type_alignment_bytes(ir_element_type);
451 set_type_alignment_bytes(ir_type, align);
453 if (type->size_constant) {
454 int n_elements = type->size;
456 set_array_bounds_int(ir_type, 0, 0, n_elements);
458 size_t elemsize = get_type_size_bytes(ir_element_type);
459 if (elemsize % align > 0) {
460 elemsize += align - (elemsize % align);
462 set_type_size_bytes(ir_type, n_elements * elemsize);
464 set_array_lower_bound_int(ir_type, 0, 0);
466 set_type_state(ir_type, layout_fixed);
472 * Return the signed integer type of size bits.
474 * @param size the size
476 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
479 static ir_mode *s_modes[64 + 1] = {NULL, };
483 if (size <= 0 || size > 64)
486 mode = s_modes[size];
490 snprintf(name, sizeof(name), "bf_I%u", size);
491 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
492 size <= 32 ? 32 : size );
493 s_modes[size] = mode;
497 snprintf(name, sizeof(name), "I%u", size);
498 ident *id = new_id_from_str(name);
499 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
500 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
501 set_primitive_base_type(res, base_tp);
507 * Return the unsigned integer type of size bits.
509 * @param size the size
511 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
514 static ir_mode *u_modes[64 + 1] = {NULL, };
518 if (size <= 0 || size > 64)
521 mode = u_modes[size];
525 snprintf(name, sizeof(name), "bf_U%u", size);
526 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
527 size <= 32 ? 32 : size );
528 u_modes[size] = mode;
533 snprintf(name, sizeof(name), "U%u", size);
534 ident *id = new_id_from_str(name);
535 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
536 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
537 set_primitive_base_type(res, base_tp);
542 static ir_type *create_bitfield_type(bitfield_type_t *const type)
544 type_t *base = skip_typeref(type->base_type);
545 assert(base->kind == TYPE_ATOMIC || base->kind == TYPE_ENUM);
546 ir_type *irbase = get_ir_type(base);
548 unsigned size = type->bit_size;
550 assert(!is_type_float(base));
551 if (is_type_signed(base)) {
552 return get_signed_int_type_for_bit_size(irbase, size);
554 return get_unsigned_int_type_for_bit_size(irbase, size);
558 #define INVALID_TYPE ((ir_type_ptr)-1)
561 COMPOUND_IS_STRUCT = false,
562 COMPOUND_IS_UNION = true
566 * Construct firm type from ast struct type.
568 * As anonymous inner structs get flattened to a single firm type, we might get
569 * irtype, outer_offset and out_align passed (they represent the position of
570 * the anonymous inner struct inside the resulting firm struct)
572 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
573 size_t *outer_offset, size_t *outer_align,
574 bool incomplete, bool is_union)
576 compound_t *compound = type->compound;
578 if (compound->irtype != NULL && (compound->irtype_complete || incomplete)) {
579 return compound->irtype;
582 size_t align_all = 1;
584 size_t bit_offset = 0;
587 if (irtype == NULL) {
588 symbol_t *symbol = compound->base.symbol;
590 if (symbol != NULL) {
591 id = new_id_from_str(symbol->string);
594 id = id_unique("__anonymous_union.%u");
596 id = id_unique("__anonymous_struct.%u");
599 dbg_info *dbgi = get_dbg_info(&compound->base.source_position);
602 irtype = new_d_type_union(id, dbgi);
604 irtype = new_d_type_struct(id, dbgi);
607 compound->irtype_complete = false;
608 compound->irtype = irtype;
610 offset = *outer_offset;
611 align_all = *outer_align;
617 compound->irtype_complete = true;
619 entity_t *entry = compound->members.entities;
620 for ( ; entry != NULL; entry = entry->base.next) {
621 if (entry->kind != ENTITY_COMPOUND_MEMBER)
624 size_t prev_offset = offset;
626 symbol_t *symbol = entry->base.symbol;
627 type_t *entry_type = skip_typeref(entry->declaration.type);
628 dbg_info *dbgi = get_dbg_info(&entry->base.source_position);
631 if (symbol != NULL) {
632 ident = new_id_from_str(symbol->string);
634 if (entry_type->kind == TYPE_COMPOUND_STRUCT) {
635 create_compound_type(&entry_type->compound, irtype, &offset,
636 &align_all, false, COMPOUND_IS_STRUCT);
637 goto finished_member;
638 } else if (entry_type->kind == TYPE_COMPOUND_UNION) {
639 create_compound_type(&entry_type->compound, irtype, &offset,
640 &align_all, false, COMPOUND_IS_UNION);
641 goto finished_member;
643 assert(entry_type->kind == TYPE_BITFIELD);
645 ident = id_unique("anon.%u");
648 ir_type *base_irtype;
649 if (entry_type->kind == TYPE_BITFIELD) {
650 base_irtype = get_ir_type(entry_type->bitfield.base_type);
652 base_irtype = get_ir_type(entry_type);
655 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
656 size_t misalign = offset % entry_alignment;
658 ir_type *entry_irtype = get_ir_type(entry_type);
659 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
662 size_t bits_remainder;
663 if (entry_type->kind == TYPE_BITFIELD) {
664 size_t size_bits = entry_type->bitfield.bit_size;
665 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
667 if (size_bits > rest_size_bits) {
668 /* start a new bucket */
669 offset += entry_alignment - misalign;
675 /* put into current bucket */
676 base = offset - misalign;
677 bits_remainder = misalign * 8 + bit_offset;
680 offset += size_bits / 8;
681 bit_offset = bit_offset + (size_bits % 8);
683 size_t entry_size = get_type_size_bytes(base_irtype);
684 if (misalign > 0 || bit_offset > 0)
685 offset += entry_alignment - misalign;
689 offset += entry_size;
693 if (entry_alignment > align_all) {
694 if (entry_alignment % align_all != 0) {
695 panic("uneven alignments not supported yet");
697 align_all = entry_alignment;
700 set_entity_offset(entity, base);
701 set_entity_offset_bits_remainder(entity,
702 (unsigned char) bits_remainder);
703 //add_struct_member(irtype, entity);
704 entry->declaration.kind = DECLARATION_KIND_COMPOUND_MEMBER;
705 assert(entry->compound_member.entity == NULL);
706 entry->compound_member.entity = entity;
710 size_t entry_size = offset - prev_offset;
711 if (entry_size > size) {
723 size_t misalign = offset % align_all;
724 if (misalign > 0 || bit_offset > 0) {
725 size += align_all - misalign;
728 if (outer_offset != NULL) {
730 *outer_offset = offset;
732 *outer_offset += size;
735 if (align_all > *outer_align) {
736 if (align_all % *outer_align != 0) {
737 panic("uneven alignments not supported yet");
739 *outer_align = align_all;
742 set_type_alignment_bytes(irtype, align_all);
743 set_type_size_bytes(irtype, size);
744 set_type_state(irtype, layout_fixed);
750 static ir_type *create_enum_type(enum_type_t *const type)
752 type->base.firm_type = ir_type_int;
754 ir_mode *const mode = mode_int;
755 tarval *const one = get_mode_one(mode);
756 tarval * tv_next = get_tarval_null(mode);
758 bool constant_folding_old = constant_folding;
759 constant_folding = true;
761 enum_t *enume = type->enume;
762 entity_t *entry = enume->base.next;
763 for (; entry != NULL; entry = entry->base.next) {
764 if (entry->kind != ENTITY_ENUM_VALUE)
767 expression_t *const init = entry->enum_value.value;
769 ir_node *const cnst = expression_to_firm(init);
770 if (!is_Const(cnst)) {
771 panic("couldn't fold constant");
773 tv_next = get_Const_tarval(cnst);
775 entry->enum_value.tv = tv_next;
776 tv_next = tarval_add(tv_next, one);
779 constant_folding = constant_folding_old;
784 static ir_type *get_ir_type_incomplete(type_t *type)
786 assert(type != NULL);
787 type = skip_typeref(type);
789 if (type->base.firm_type != NULL) {
790 assert(type->base.firm_type != INVALID_TYPE);
791 return type->base.firm_type;
794 switch (type->kind) {
795 case TYPE_COMPOUND_STRUCT:
796 return create_compound_type(&type->compound, NULL, NULL, NULL,
797 true, COMPOUND_IS_STRUCT);
798 case TYPE_COMPOUND_UNION:
799 return create_compound_type(&type->compound, NULL, NULL, NULL,
800 true, COMPOUND_IS_UNION);
802 return get_ir_type(type);
806 static ir_type *get_ir_type(type_t *type)
808 assert(type != NULL);
810 type = skip_typeref(type);
812 if (type->base.firm_type != NULL) {
813 assert(type->base.firm_type != INVALID_TYPE);
814 return type->base.firm_type;
817 ir_type *firm_type = NULL;
818 switch (type->kind) {
820 /* Happens while constant folding, when there was an error */
821 return create_atomic_type(&type_void->atomic);
824 firm_type = create_atomic_type(&type->atomic);
827 firm_type = create_complex_type(&type->complex);
830 firm_type = create_imaginary_type(&type->imaginary);
833 firm_type = create_method_type(&type->function);
836 firm_type = create_pointer_type(&type->pointer);
839 firm_type = create_array_type(&type->array);
841 case TYPE_COMPOUND_STRUCT:
842 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
843 false, COMPOUND_IS_STRUCT);
845 case TYPE_COMPOUND_UNION:
846 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
847 false, COMPOUND_IS_UNION);
850 firm_type = create_enum_type(&type->enumt);
853 firm_type = get_ir_type(type->builtin.real_type);
856 firm_type = create_bitfield_type(&type->bitfield);
864 if (firm_type == NULL)
865 panic("unknown type found");
867 type->base.firm_type = firm_type;
871 static inline ir_mode *get_ir_mode(type_t *type)
873 ir_type *irtype = get_ir_type(type);
875 /* firm doesn't report a mode for arrays somehow... */
876 if (is_Array_type(irtype)) {
880 ir_mode *mode = get_type_mode(irtype);
881 assert(mode != NULL);
885 /** Names of the runtime functions. */
886 static const struct {
887 int id; /**< the rts id */
888 int n_res; /**< number of return values */
889 const char *name; /**< the name of the rts function */
890 int n_params; /**< number of parameters */
891 unsigned flags; /**< language flags */
893 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
894 { rts_abort, 0, "abort", 0, _C89 },
895 { rts_alloca, 1, "alloca", 1, _ALL },
896 { rts_abs, 1, "abs", 1, _C89 },
897 { rts_labs, 1, "labs", 1, _C89 },
898 { rts_llabs, 1, "llabs", 1, _C99 },
899 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
901 { rts_fabs, 1, "fabs", 1, _C89 },
902 { rts_sqrt, 1, "sqrt", 1, _C89 },
903 { rts_cbrt, 1, "cbrt", 1, _C99 },
904 { rts_exp, 1, "exp", 1, _C89 },
905 { rts_exp2, 1, "exp2", 1, _C89 },
906 { rts_exp10, 1, "exp10", 1, _GNUC },
907 { rts_log, 1, "log", 1, _C89 },
908 { rts_log2, 1, "log2", 1, _C89 },
909 { rts_log10, 1, "log10", 1, _C89 },
910 { rts_pow, 1, "pow", 2, _C89 },
911 { rts_sin, 1, "sin", 1, _C89 },
912 { rts_cos, 1, "cos", 1, _C89 },
913 { rts_tan, 1, "tan", 1, _C89 },
914 { rts_asin, 1, "asin", 1, _C89 },
915 { rts_acos, 1, "acos", 1, _C89 },
916 { rts_atan, 1, "atan", 1, _C89 },
917 { rts_sinh, 1, "sinh", 1, _C89 },
918 { rts_cosh, 1, "cosh", 1, _C89 },
919 { rts_tanh, 1, "tanh", 1, _C89 },
921 { rts_fabsf, 1, "fabsf", 1, _C99 },
922 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
923 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
924 { rts_expf, 1, "expf", 1, _C99 },
925 { rts_exp2f, 1, "exp2f", 1, _C99 },
926 { rts_exp10f, 1, "exp10f", 1, _GNUC },
927 { rts_logf, 1, "logf", 1, _C99 },
928 { rts_log2f, 1, "log2f", 1, _C99 },
929 { rts_log10f, 1, "log10f", 1, _C99 },
930 { rts_powf, 1, "powf", 2, _C99 },
931 { rts_sinf, 1, "sinf", 1, _C99 },
932 { rts_cosf, 1, "cosf", 1, _C99 },
933 { rts_tanf, 1, "tanf", 1, _C99 },
934 { rts_asinf, 1, "asinf", 1, _C99 },
935 { rts_acosf, 1, "acosf", 1, _C99 },
936 { rts_atanf, 1, "atanf", 1, _C99 },
937 { rts_sinhf, 1, "sinhf", 1, _C99 },
938 { rts_coshf, 1, "coshf", 1, _C99 },
939 { rts_tanhf, 1, "tanhf", 1, _C99 },
941 { rts_fabsl, 1, "fabsl", 1, _C99 },
942 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
943 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
944 { rts_expl, 1, "expl", 1, _C99 },
945 { rts_exp2l, 1, "exp2l", 1, _C99 },
946 { rts_exp10l, 1, "exp10l", 1, _GNUC },
947 { rts_logl, 1, "logl", 1, _C99 },
948 { rts_log2l, 1, "log2l", 1, _C99 },
949 { rts_log10l, 1, "log10l", 1, _C99 },
950 { rts_powl, 1, "powl", 2, _C99 },
951 { rts_sinl, 1, "sinl", 1, _C99 },
952 { rts_cosl, 1, "cosl", 1, _C99 },
953 { rts_tanl, 1, "tanl", 1, _C99 },
954 { rts_asinl, 1, "asinl", 1, _C99 },
955 { rts_acosl, 1, "acosl", 1, _C99 },
956 { rts_atanl, 1, "atanl", 1, _C99 },
957 { rts_sinhl, 1, "sinhl", 1, _C99 },
958 { rts_coshl, 1, "coshl", 1, _C99 },
959 { rts_tanhl, 1, "tanhl", 1, _C99 },
961 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
962 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
963 { rts_strcmp, 1, "strcmp", 2, _C89 },
964 { rts_strncmp, 1, "strncmp", 3, _C89 }
967 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
970 * Mangles an entity linker (ld) name for win32 usage.
972 * @param ent the entity to be mangled
973 * @param declaration the declaration
975 static ident *create_ld_ident_win32(ir_entity *irentity, entity_t *entity)
979 if (is_Method_type(get_entity_type(irentity)))
980 id = decorate_win32_c_fkt(irentity, get_entity_ident(irentity));
982 /* always add an underscore in win32 */
983 id = mangle(id_underscore, get_entity_ident(irentity));
986 assert(is_declaration(entity));
987 decl_modifiers_t decl_modifiers = entity->declaration.modifiers;
988 if (decl_modifiers & DM_DLLIMPORT) {
989 /* add prefix for imported symbols */
990 id = mangle(id_imp, id);
996 * Mangles an entity linker (ld) name for Linux ELF usage.
998 * @param ent the entity to be mangled
999 * @param declaration the declaration
1001 static ident *create_ld_ident_linux_elf(ir_entity *irentity, entity_t *entity)
1004 return get_entity_ident(irentity);
1008 * Mangles an entity linker (ld) name for Mach-O usage.
1010 * @param ent the entity to be mangled
1011 * @param declaration the declaration
1013 static ident *create_ld_ident_macho(ir_entity *irentity, entity_t *entity)
1016 ident *id = mangle(id_underscore, get_entity_ident(irentity));
1020 typedef ident* (*create_ld_ident_func)(ir_entity *irentity, entity_t *entity);
1021 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
1024 * Handle GNU attributes for entities
1026 * @param ent the entity
1027 * @param decl the routine declaration
1029 static void handle_gnu_attributes_ent(ir_entity *irentity, entity_t *entity)
1031 assert(is_declaration(entity));
1032 decl_modifiers_t modifiers = entity->declaration.modifiers;
1033 if (modifiers & DM_PURE) {
1034 /* TRUE if the declaration includes the GNU
1035 __attribute__((pure)) specifier. */
1036 set_entity_additional_property(irentity, mtp_property_pure);
1038 if (modifiers & DM_CONST) {
1039 set_entity_additional_property(irentity, mtp_property_const);
1040 have_const_functions = true;
1042 if (modifiers & DM_USED) {
1043 /* TRUE if the declaration includes the GNU
1044 __attribute__((used)) specifier. */
1045 set_entity_stickyness(irentity, stickyness_sticky);
1050 * Creates an entity representing a function.
1052 * @param declaration the function declaration
1054 static ir_entity *get_function_entity(entity_t *entity)
1056 assert(entity->kind == ENTITY_FUNCTION);
1057 if (entity->function.entity != NULL) {
1058 return entity->function.entity;
1061 symbol_t *symbol = entity->base.symbol;
1062 ident *id = new_id_from_str(symbol->string);
1064 ir_type *global_type = get_glob_type();
1065 ir_type *ir_type_method = get_ir_type(entity->declaration.type);
1066 bool const has_body = entity->function.statement != NULL;
1068 /* already an entity defined? */
1069 ir_entity *irentity = entitymap_get(&entitymap, symbol);
1070 if (irentity != NULL) {
1071 if (get_entity_visibility(irentity) == visibility_external_allocated
1073 set_entity_visibility(irentity, visibility_external_visible);
1075 goto entity_created;
1078 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
1079 irentity = new_d_entity(global_type, id, ir_type_method, dbgi);
1080 set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
1082 handle_gnu_attributes_ent(irentity, entity);
1084 /* static inline => local
1085 * extern inline => local
1086 * inline without definition => local
1087 * inline with definition => external_visible */
1088 storage_class_tag_t const storage_class
1089 = (storage_class_tag_t) entity->declaration.storage_class;
1090 bool const is_inline = entity->function.is_inline;
1091 if (is_inline && storage_class == STORAGE_CLASS_NONE && has_body) {
1092 set_entity_visibility(irentity, visibility_external_visible);
1093 } else if (storage_class == STORAGE_CLASS_STATIC ||
1094 (is_inline && has_body)) {
1096 /* this entity was declared, but is defined nowhere */
1097 set_entity_peculiarity(irentity, peculiarity_description);
1099 set_entity_visibility(irentity, visibility_local);
1100 } else if (has_body) {
1101 set_entity_visibility(irentity, visibility_external_visible);
1103 set_entity_visibility(irentity, visibility_external_allocated);
1105 set_entity_allocation(irentity, allocation_static);
1107 /* We should check for file scope here, but as long as we compile C only
1108 this is not needed. */
1109 if (! firm_opt.freestanding) {
1110 /* check for a known runtime function */
1111 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1112 if (id != rts_idents[i])
1115 /* ignore those rts functions not necessary needed for current mode */
1116 if ((c_mode & rts_data[i].flags) == 0)
1118 assert(rts_entities[rts_data[i].id] == NULL);
1119 rts_entities[rts_data[i].id] = irentity;
1123 entitymap_insert(&entitymap, symbol, irentity);
1126 entity->declaration.kind = DECLARATION_KIND_FUNCTION;
1127 entity->function.entity = irentity;
1133 * Creates a Const node representing a constant.
1135 static ir_node *const_to_firm(const const_expression_t *cnst)
1137 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1138 ir_mode *mode = get_ir_mode(cnst->base.type);
1143 if (mode_is_float(mode)) {
1144 tv = new_tarval_from_double(cnst->v.float_value, mode);
1146 if (mode_is_signed(mode)) {
1147 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1149 len = snprintf(buf, sizeof(buf), "%llu",
1150 (unsigned long long) cnst->v.int_value);
1152 tv = new_tarval_from_str(buf, len, mode);
1155 return new_d_Const(dbgi, mode, tv);
1159 * Creates a Const node representing a character constant.
1161 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1163 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1164 ir_mode *mode = get_ir_mode(cnst->base.type);
1166 long long int v = 0;
1167 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1168 if (char_is_signed) {
1169 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1171 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1175 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1176 tarval *tv = new_tarval_from_str(buf, len, mode);
1178 return new_d_Const(dbgi, mode, tv);
1182 * Creates a Const node representing a wide character constant.
1184 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1186 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1187 ir_mode *mode = get_ir_mode(cnst->base.type);
1189 long long int v = cnst->v.wide_character.begin[0];
1192 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1193 tarval *tv = new_tarval_from_str(buf, len, mode);
1195 return new_d_Const(dbgi, mode, tv);
1199 * Creates a SymConst for a given entity.
1201 * @param dbgi debug info
1202 * @param mode the (reference) mode for the SymConst
1203 * @param entity the entity
1205 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1208 assert(entity != NULL);
1209 union symconst_symbol sym;
1210 sym.entity_p = entity;
1211 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1215 * Creates a SymConst node representing a string constant.
1217 * @param src_pos the source position of the string constant
1218 * @param id_prefix a prefix for the name of the generated string constant
1219 * @param value the value of the string constant
1221 static ir_node *string_to_firm(const source_position_t *const src_pos,
1222 const char *const id_prefix,
1223 const string_t *const value)
1225 ir_type *const global_type = get_glob_type();
1226 dbg_info *const dbgi = get_dbg_info(src_pos);
1227 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1228 ir_type_const_char, dbgi);
1230 ident *const id = id_unique(id_prefix);
1231 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1232 set_entity_ld_ident(entity, id);
1233 set_entity_variability(entity, variability_constant);
1234 set_entity_allocation(entity, allocation_static);
1236 ir_type *const elem_type = ir_type_const_char;
1237 ir_mode *const mode = get_type_mode(elem_type);
1239 const char* const string = value->begin;
1240 const size_t slen = value->size;
1242 set_array_lower_bound_int(type, 0, 0);
1243 set_array_upper_bound_int(type, 0, slen);
1244 set_type_size_bytes(type, slen);
1245 set_type_state(type, layout_fixed);
1247 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1248 for (size_t i = 0; i < slen; ++i) {
1249 tvs[i] = new_tarval_from_long(string[i], mode);
1252 set_array_entity_values(entity, tvs, slen);
1255 return create_symconst(dbgi, mode_P_data, entity);
1259 * Creates a SymConst node representing a string literal.
1261 * @param literal the string literal
1263 static ir_node *string_literal_to_firm(
1264 const string_literal_expression_t* literal)
1266 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1271 * Creates a SymConst node representing a wide string literal.
1273 * @param literal the wide string literal
1275 static ir_node *wide_string_literal_to_firm(
1276 const wide_string_literal_expression_t* const literal)
1278 ir_type *const global_type = get_glob_type();
1279 ir_type *const elem_type = ir_type_wchar_t;
1280 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1281 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1284 ident *const id = id_unique("Lstr.%u");
1285 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1286 set_entity_ld_ident(entity, id);
1287 set_entity_variability(entity, variability_constant);
1288 set_entity_allocation(entity, allocation_static);
1290 ir_mode *const mode = get_type_mode(elem_type);
1292 const wchar_rep_t *const string = literal->value.begin;
1293 const size_t slen = literal->value.size;
1295 set_array_lower_bound_int(type, 0, 0);
1296 set_array_upper_bound_int(type, 0, slen);
1297 set_type_size_bytes(type, slen);
1298 set_type_state(type, layout_fixed);
1300 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1301 for (size_t i = 0; i < slen; ++i) {
1302 tvs[i] = new_tarval_from_long(string[i], mode);
1305 set_array_entity_values(entity, tvs, slen);
1308 return create_symconst(dbgi, mode_P_data, entity);
1311 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1312 ir_node *const addr)
1314 ir_type *irtype = get_ir_type(type);
1315 if (is_compound_type(irtype)
1316 || is_Method_type(irtype)
1317 || is_Array_type(irtype)) {
1321 ir_mode *const mode = get_type_mode(irtype);
1322 ir_node *const memory = get_store();
1323 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1324 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1325 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1327 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1328 set_Load_volatility(load, volatility_is_volatile);
1331 set_store(load_mem);
1336 * Creates a strict Conv if neccessary.
1338 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1340 ir_mode *mode = get_irn_mode(node);
1342 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1344 if (!mode_is_float(mode))
1347 /* check if there is already a Conv */
1348 if (is_Conv(node)) {
1349 /* convert it into a strict Conv */
1350 set_Conv_strict(node, 1);
1354 /* otherwise create a new one */
1355 return new_d_strictConv(dbgi, node, mode);
1358 static ir_node *get_global_var_address(dbg_info *const dbgi,
1359 const entity_t *const entity)
1361 assert(entity->kind == ENTITY_VARIABLE);
1362 assert(entity->declaration.kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1364 ir_entity *const irentity = entity->variable.v.entity;
1365 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1366 case STORAGE_CLASS_THREAD:
1367 case STORAGE_CLASS_THREAD_EXTERN:
1368 case STORAGE_CLASS_THREAD_STATIC: {
1369 ir_node *const no_mem = new_NoMem();
1370 ir_node *const tls = get_irg_tls(current_ir_graph);
1371 return new_d_simpleSel(dbgi, no_mem, tls, irentity);
1375 return create_symconst(dbgi, mode_P_data, irentity);
1380 * Returns the correct base address depending on whether it is a parameter or a
1381 * normal local variable.
1383 static ir_node *get_local_frame(ir_entity *const ent)
1385 ir_graph *const irg = current_ir_graph;
1386 const ir_type *const owner = get_entity_owner(ent);
1387 if (owner == get_irg_frame_type(irg)) {
1388 return get_irg_frame(irg);
1390 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1391 return get_irg_value_param_base(irg);
1395 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1397 ir_mode *value_mode = get_irn_mode(value);
1399 if (value_mode == dest_mode || is_Bad(value))
1402 if (dest_mode == mode_b) {
1403 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1404 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1405 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1409 return new_d_Conv(dbgi, value, dest_mode);
1413 * Keep all memory edges of the given block.
1415 static void keep_all_memory(ir_node *block) {
1416 ir_node *old = get_cur_block();
1418 set_cur_block(block);
1419 keep_alive(get_store());
1420 /* TODO: keep all memory edges from restricted pointers */
1424 static ir_node *reference_expression_enum_value_to_firm(
1425 const reference_expression_t *ref)
1427 entity_t *entity = ref->entity;
1428 type_t *type = skip_typeref(entity->enum_value.enum_type);
1429 /* make sure the type is constructed */
1430 (void) get_ir_type(type);
1432 ir_mode *const mode = get_ir_mode(type);
1433 return new_Const(mode, entity->enum_value.tv);
1436 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1438 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1439 entity_t *entity = ref->entity;
1440 assert(is_declaration(entity));
1441 type_t *type = skip_typeref(entity->declaration.type);
1443 /* make sure the type is constructed */
1444 (void) get_ir_type(type);
1446 switch ((declaration_kind_t) entity->declaration.kind) {
1447 case DECLARATION_KIND_UNKNOWN:
1450 case DECLARATION_KIND_LOCAL_VARIABLE: {
1451 ir_mode *const mode = get_ir_mode(type);
1452 return get_value(entity->variable.v.value_number, mode);
1454 case DECLARATION_KIND_FUNCTION: {
1455 ir_mode *const mode = get_ir_mode(type);
1456 return create_symconst(dbgi, mode, entity->function.entity);
1458 case DECLARATION_KIND_INNER_FUNCTION: {
1459 ir_mode *const mode = get_ir_mode(type);
1460 if (!entity->function.goto_to_outer && !entity->function.need_closure) {
1461 /* inner function not using the closure */
1462 return create_symconst(dbgi, mode, entity->function.entity);
1464 /* TODO: need trampoline here */
1465 panic("Trampoline code not implemented");
1466 return create_symconst(dbgi, mode, entity->function.entity);
1469 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1470 ir_node *const addr = get_global_var_address(dbgi, entity);
1471 return deref_address(dbgi, entity->declaration.type, addr);
1474 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1475 ir_entity *irentity = entity->variable.v.entity;
1476 ir_node *frame = get_local_frame(irentity);
1477 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1478 return deref_address(dbgi, entity->declaration.type, sel);
1481 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1482 return entity->variable.v.vla_base;
1484 case DECLARATION_KIND_COMPOUND_MEMBER:
1485 panic("not implemented reference type");
1488 panic("reference to declaration with unknown type found");
1491 static ir_node *reference_addr(const reference_expression_t *ref)
1493 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1494 entity_t *entity = ref->entity;
1495 assert(is_declaration(entity));
1497 switch((declaration_kind_t) entity->declaration.kind) {
1498 case DECLARATION_KIND_UNKNOWN:
1500 case DECLARATION_KIND_LOCAL_VARIABLE:
1501 /* you can store to a local variable (so we don't panic but return NULL
1502 * as an indicator for no real address) */
1504 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1505 ir_node *const addr = get_global_var_address(dbgi, entity);
1508 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1509 ir_entity *irentity = entity->variable.v.entity;
1510 ir_node *frame = get_local_frame(irentity);
1511 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, irentity);
1516 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1517 return entity->variable.v.vla_base;
1519 case DECLARATION_KIND_FUNCTION: {
1520 type_t *const type = skip_typeref(entity->declaration.type);
1521 ir_mode *const mode = get_ir_mode(type);
1522 return create_symconst(dbgi, mode, entity->function.entity);
1525 case DECLARATION_KIND_INNER_FUNCTION:
1526 case DECLARATION_KIND_COMPOUND_MEMBER:
1527 panic("not implemented reference type");
1530 panic("reference to declaration with unknown type found");
1534 * Transform calls to builtin functions.
1536 static ir_node *process_builtin_call(const call_expression_t *call)
1538 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1540 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1541 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1543 type_t *type = skip_typeref(builtin->base.type);
1544 assert(is_type_pointer(type));
1546 type_t *function_type = skip_typeref(type->pointer.points_to);
1547 symbol_t *symbol = builtin->symbol;
1549 switch(symbol->ID) {
1550 case T___builtin_alloca: {
1551 if (call->arguments == NULL || call->arguments->next != NULL) {
1552 panic("invalid number of parameters on __builtin_alloca");
1554 expression_t *argument = call->arguments->expression;
1555 ir_node *size = expression_to_firm(argument);
1557 ir_node *store = get_store();
1558 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1560 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1562 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1567 case T___builtin_huge_val:
1568 case T___builtin_inf:
1569 case T___builtin_inff:
1570 case T___builtin_infl: {
1571 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1572 tarval *tv = get_mode_infinite(mode);
1573 ir_node *res = new_d_Const(dbgi, mode, tv);
1576 case T___builtin_nan:
1577 case T___builtin_nanf:
1578 case T___builtin_nanl: {
1579 /* Ignore string for now... */
1580 assert(is_type_function(function_type));
1581 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1582 tarval *tv = get_mode_NAN(mode);
1583 ir_node *res = new_d_Const(dbgi, mode, tv);
1586 case T___builtin_va_end:
1589 panic("Unsupported builtin found\n");
1594 * Transform a call expression.
1595 * Handles some special cases, like alloca() calls, which must be resolved
1596 * BEFORE the inlines runs. Inlining routines calling alloca() is dangerous,
1597 * 176.gcc for instance might allocate 2GB instead of 256 MB if alloca is not
1600 static ir_node *call_expression_to_firm(const call_expression_t *call)
1602 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1603 assert(get_cur_block() != NULL);
1605 expression_t *function = call->function;
1606 if (function->kind == EXPR_BUILTIN_SYMBOL) {
1607 return process_builtin_call(call);
1609 if (function->kind == EXPR_REFERENCE) {
1610 const reference_expression_t *ref = &function->reference;
1611 entity_t *entity = ref->entity;
1613 if (entity->kind == ENTITY_FUNCTION
1614 && entity->function.entity == rts_entities[rts_alloca]) {
1615 /* handle alloca() call */
1616 expression_t *argument = call->arguments->expression;
1617 ir_node *size = expression_to_firm(argument);
1619 size = create_conv(dbgi, size, get_ir_mode(type_size_t));
1621 ir_node *store = get_store();
1622 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1623 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1625 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1627 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1632 ir_node *callee = expression_to_firm(function);
1634 type_t *type = skip_typeref(function->base.type);
1635 assert(is_type_pointer(type));
1636 pointer_type_t *pointer_type = &type->pointer;
1637 type_t *points_to = skip_typeref(pointer_type->points_to);
1638 assert(is_type_function(points_to));
1639 function_type_t *function_type = &points_to->function;
1641 int n_parameters = 0;
1642 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1643 ir_type *new_method_type = NULL;
1644 if (function_type->variadic || function_type->unspecified_parameters) {
1645 const call_argument_t *argument = call->arguments;
1646 for ( ; argument != NULL; argument = argument->next) {
1650 /* we need to construct a new method type matching the call
1652 int n_res = get_method_n_ress(ir_method_type);
1653 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1654 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1655 n_parameters, n_res, dbgi);
1656 set_method_calling_convention(new_method_type,
1657 get_method_calling_convention(ir_method_type));
1658 set_method_additional_properties(new_method_type,
1659 get_method_additional_properties(ir_method_type));
1660 set_method_variadicity(new_method_type,
1661 get_method_variadicity(ir_method_type));
1663 for (int i = 0; i < n_res; ++i) {
1664 set_method_res_type(new_method_type, i,
1665 get_method_res_type(ir_method_type, i));
1667 argument = call->arguments;
1668 for (int i = 0; i < n_parameters; ++i, argument = argument->next) {
1669 expression_t *expression = argument->expression;
1670 ir_type *irtype = get_ir_type(expression->base.type);
1671 set_method_param_type(new_method_type, i, irtype);
1673 ir_method_type = new_method_type;
1675 n_parameters = get_method_n_params(ir_method_type);
1678 ir_node *in[n_parameters];
1680 const call_argument_t *argument = call->arguments;
1681 for (int n = 0; n < n_parameters; ++n) {
1682 expression_t *expression = argument->expression;
1683 ir_node *arg_node = expression_to_firm(expression);
1685 arg_node = do_strict_conv(dbgi, arg_node);
1689 argument = argument->next;
1692 ir_node *store = get_store();
1693 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1695 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1698 type_t *return_type = skip_typeref(function_type->return_type);
1699 ir_node *result = NULL;
1701 if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1703 if (is_type_scalar(return_type)) {
1704 mode = get_ir_mode(return_type);
1708 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1709 result = new_d_Proj(dbgi, resproj, mode, 0);
1712 if (function->kind == EXPR_REFERENCE &&
1713 function->reference.entity->declaration.modifiers & DM_NORETURN) {
1714 /* A dead end: Keep the Call and the Block. Also place all further
1715 * nodes into a new and unreachable block. */
1717 keep_alive(get_cur_block());
1724 static void statement_to_firm(statement_t *statement);
1725 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1727 static ir_node *expression_to_addr(const expression_t *expression);
1728 static ir_node *create_condition_evaluation(const expression_t *expression,
1729 ir_node *true_block,
1730 ir_node *false_block);
1732 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1735 value = do_strict_conv(dbgi, value);
1737 ir_node *memory = get_store();
1739 if (is_type_scalar(type)) {
1740 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1741 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1742 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1743 set_Store_volatility(store, volatility_is_volatile);
1744 set_store(store_mem);
1746 ir_type *irtype = get_ir_type(type);
1747 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1748 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1749 set_store(copyb_mem);
1753 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1755 tarval *all_one = get_mode_all_one(mode);
1756 int mode_size = get_mode_size_bits(mode);
1758 assert(offset >= 0);
1760 assert(offset + size <= mode_size);
1761 if (size == mode_size) {
1765 long shiftr = get_mode_size_bits(mode) - size;
1766 long shiftl = offset;
1767 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1768 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1769 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1770 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1775 static void bitfield_store_to_firm(dbg_info *dbgi,
1776 ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
1778 ir_type *entity_type = get_entity_type(entity);
1779 ir_type *base_type = get_primitive_base_type(entity_type);
1780 assert(base_type != NULL);
1781 ir_mode *mode = get_type_mode(base_type);
1783 value = create_conv(dbgi, value, mode);
1785 /* kill upper bits of value and shift to right position */
1786 int bitoffset = get_entity_offset_bits_remainder(entity);
1787 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1789 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1790 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1791 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1792 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1793 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1794 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1796 /* load current value */
1797 ir_node *mem = get_store();
1798 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1799 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1800 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1801 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1802 tarval *inv_mask = tarval_not(shift_mask);
1803 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1804 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1806 /* construct new value and store */
1807 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1808 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1809 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1810 set_store(store_mem);
1813 set_Load_volatility(load, volatility_is_volatile);
1814 set_Store_volatility(store, volatility_is_volatile);
1818 static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1821 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1822 type_t *type = expression->base.type;
1823 ir_mode *mode = get_ir_mode(type);
1824 ir_node *mem = get_store();
1825 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1826 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1827 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1829 load_res = create_conv(dbgi, load_res, mode_int);
1831 set_store(load_mem);
1833 /* kill upper bits */
1834 assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
1835 ir_entity *entity = expression->compound_entry->compound_member.entity;
1836 int bitoffset = get_entity_offset_bits_remainder(entity);
1837 ir_type *entity_type = get_entity_type(entity);
1838 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1839 long shift_bitsl = machine_size - bitoffset - bitsize;
1840 assert(shift_bitsl >= 0);
1841 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1842 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1843 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1845 long shift_bitsr = bitoffset + shift_bitsl;
1846 assert(shift_bitsr <= (long) machine_size);
1847 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1848 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1850 if (mode_is_signed(mode)) {
1851 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1853 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1856 return create_conv(dbgi, shiftr, mode);
1859 /* make sure the selected compound type is constructed */
1860 static void construct_select_compound(const select_expression_t *expression)
1862 type_t *type = skip_typeref(expression->compound->base.type);
1863 if (is_type_pointer(type)) {
1864 type = type->pointer.points_to;
1866 (void) get_ir_type(type);
1869 static void set_value_for_expression_addr(const expression_t *expression,
1870 ir_node *value, ir_node *addr)
1872 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1873 value = do_strict_conv(dbgi, value);
1875 if (expression->kind == EXPR_REFERENCE) {
1876 const reference_expression_t *ref = &expression->reference;
1878 entity_t *entity = ref->entity;
1879 assert(is_declaration(entity));
1880 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1881 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1882 set_value(entity->variable.v.value_number, value);
1888 addr = expression_to_addr(expression);
1890 type_t *type = skip_typeref(expression->base.type);
1892 if (expression->kind == EXPR_SELECT) {
1893 const select_expression_t *select = &expression->select;
1895 construct_select_compound(select);
1897 entity_t *entity = select->compound_entry;
1898 assert(entity->kind == ENTITY_COMPOUND_MEMBER);
1899 if (entity->declaration.type->kind == TYPE_BITFIELD) {
1900 ir_entity *irentity = entity->compound_member.entity;
1902 = select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
1903 bitfield_store_to_firm(dbgi, irentity, addr, value, set_volatile);
1908 assign_value(dbgi, addr, type, value);
1911 static void set_value_for_expression(const expression_t *expression,
1914 set_value_for_expression_addr(expression, value, NULL);
1917 static ir_node *get_value_from_lvalue(const expression_t *expression,
1920 if (expression->kind == EXPR_REFERENCE) {
1921 const reference_expression_t *ref = &expression->reference;
1923 entity_t *entity = ref->entity;
1924 assert(entity->kind == ENTITY_VARIABLE);
1925 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
1926 if (entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1927 assert(addr == NULL);
1928 ir_mode *mode = get_ir_mode(expression->base.type);
1929 return get_value(entity->variable.v.value_number, mode);
1933 assert(addr != NULL);
1934 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1937 if (expression->kind == EXPR_SELECT &&
1938 expression->select.compound_entry->declaration.type->kind == TYPE_BITFIELD){
1939 construct_select_compound(&expression->select);
1940 value = bitfield_extract_to_firm(&expression->select, addr);
1942 value = deref_address(dbgi, expression->base.type, addr);
1949 static ir_node *create_incdec(const unary_expression_t *expression)
1951 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1952 const expression_t *value_expr = expression->value;
1953 ir_node *addr = expression_to_addr(value_expr);
1954 ir_node *value = get_value_from_lvalue(value_expr, addr);
1956 type_t *type = skip_typeref(expression->base.type);
1957 ir_mode *mode = get_ir_mode(expression->base.type);
1960 if (is_type_pointer(type)) {
1961 pointer_type_t *pointer_type = &type->pointer;
1962 offset = get_type_size(pointer_type->points_to);
1964 assert(is_type_arithmetic(type));
1965 offset = new_Const(mode, get_mode_one(mode));
1969 ir_node *store_value;
1970 switch(expression->base.kind) {
1971 case EXPR_UNARY_POSTFIX_INCREMENT:
1973 store_value = new_d_Add(dbgi, value, offset, mode);
1975 case EXPR_UNARY_POSTFIX_DECREMENT:
1977 store_value = new_d_Sub(dbgi, value, offset, mode);
1979 case EXPR_UNARY_PREFIX_INCREMENT:
1980 result = new_d_Add(dbgi, value, offset, mode);
1981 store_value = result;
1983 case EXPR_UNARY_PREFIX_DECREMENT:
1984 result = new_d_Sub(dbgi, value, offset, mode);
1985 store_value = result;
1988 panic("no incdec expr in create_incdec");
1991 set_value_for_expression_addr(value_expr, store_value, addr);
1996 static bool is_local_variable(expression_t *expression)
1998 if (expression->kind != EXPR_REFERENCE)
2000 reference_expression_t *ref_expr = &expression->reference;
2001 entity_t *entity = ref_expr->entity;
2002 if (entity->kind != ENTITY_VARIABLE)
2004 assert(entity->declaration.kind != DECLARATION_KIND_UNKNOWN);
2005 return entity->declaration.kind == DECLARATION_KIND_LOCAL_VARIABLE;
2008 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
2011 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
2012 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
2013 case EXPR_BINARY_NOTEQUAL:
2014 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
2015 case EXPR_BINARY_ISLESS:
2016 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
2017 case EXPR_BINARY_ISLESSEQUAL:
2018 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
2019 case EXPR_BINARY_ISGREATER:
2020 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
2021 case EXPR_BINARY_ISGREATEREQUAL:
2022 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
2023 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
2028 panic("trying to get pn_Cmp from non-comparison binexpr type");
2032 * Handle the assume optimizer hint: check if a Confirm
2033 * node can be created.
2035 * @param dbi debug info
2036 * @param expr the IL assume expression
2038 * we support here only some simple cases:
2043 static ir_node *handle_assume_compare(dbg_info *dbi,
2044 const binary_expression_t *expression)
2046 expression_t *op1 = expression->left;
2047 expression_t *op2 = expression->right;
2048 entity_t *var2, *var = NULL;
2049 ir_node *res = NULL;
2052 cmp_val = get_pnc(expression->base.kind, op1->base.type);
2054 if (is_local_variable(op1) && is_local_variable(op2)) {
2055 var = op1->reference.entity;
2056 var2 = op2->reference.entity;
2058 type_t *const type = skip_typeref(var->declaration.type);
2059 ir_mode *const mode = get_ir_mode(type);
2061 ir_node *const irn1 = get_value(var->variable.v.value_number, mode);
2062 ir_node *const irn2 = get_value(var2->variable.v.value_number, mode);
2064 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
2065 set_value(var2->variable.v.value_number, res);
2067 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
2068 set_value(var->variable.v.value_number, res);
2074 if (is_local_variable(op1) && is_constant_expression(op2)) {
2075 var = op1->reference.entity;
2077 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
2078 cmp_val = get_inversed_pnc(cmp_val);
2079 var = op2->reference.entity;
2084 type_t *const type = skip_typeref(var->declaration.type);
2085 ir_mode *const mode = get_ir_mode(type);
2087 res = get_value(var->variable.v.value_number, mode);
2088 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
2089 set_value(var->variable.v.value_number, res);
2095 * Handle the assume optimizer hint.
2097 * @param dbi debug info
2098 * @param expr the IL assume expression
2100 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
2101 switch(expression->kind) {
2102 case EXPR_BINARY_EQUAL:
2103 case EXPR_BINARY_NOTEQUAL:
2104 case EXPR_BINARY_LESS:
2105 case EXPR_BINARY_LESSEQUAL:
2106 case EXPR_BINARY_GREATER:
2107 case EXPR_BINARY_GREATEREQUAL:
2108 return handle_assume_compare(dbi, &expression->binary);
2114 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
2116 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2117 type_t *type = skip_typeref(expression->base.type);
2119 if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
2120 return expression_to_addr(expression->value);
2122 const expression_t *value = expression->value;
2124 switch(expression->base.kind) {
2125 case EXPR_UNARY_NEGATE: {
2126 ir_node *value_node = expression_to_firm(value);
2127 ir_mode *mode = get_ir_mode(type);
2128 return new_d_Minus(dbgi, value_node, mode);
2130 case EXPR_UNARY_PLUS:
2131 return expression_to_firm(value);
2132 case EXPR_UNARY_BITWISE_NEGATE: {
2133 ir_node *value_node = expression_to_firm(value);
2134 ir_mode *mode = get_ir_mode(type);
2135 return new_d_Not(dbgi, value_node, mode);
2137 case EXPR_UNARY_NOT: {
2138 ir_node *value_node = _expression_to_firm(value);
2139 value_node = create_conv(dbgi, value_node, mode_b);
2140 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
2143 case EXPR_UNARY_DEREFERENCE: {
2144 ir_node *value_node = expression_to_firm(value);
2145 type_t *value_type = skip_typeref(value->base.type);
2146 assert(is_type_pointer(value_type));
2147 type_t *points_to = value_type->pointer.points_to;
2148 return deref_address(dbgi, points_to, value_node);
2150 case EXPR_UNARY_POSTFIX_INCREMENT:
2151 case EXPR_UNARY_POSTFIX_DECREMENT:
2152 case EXPR_UNARY_PREFIX_INCREMENT:
2153 case EXPR_UNARY_PREFIX_DECREMENT:
2154 return create_incdec(expression);
2155 case EXPR_UNARY_CAST: {
2156 ir_node *value_node = expression_to_firm(value);
2157 if (is_type_scalar(type)) {
2158 ir_mode *mode = get_ir_mode(type);
2159 ir_node *node = create_conv(dbgi, value_node, mode);
2160 node = do_strict_conv(dbgi, node);
2163 /* make sure firm type is constructed */
2164 (void) get_ir_type(type);
2168 case EXPR_UNARY_CAST_IMPLICIT: {
2169 ir_node *value_node = expression_to_firm(value);
2170 if (is_type_scalar(type)) {
2171 ir_mode *mode = get_ir_mode(type);
2172 return create_conv(dbgi, value_node, mode);
2177 case EXPR_UNARY_ASSUME:
2178 if (firm_opt.confirm)
2179 return handle_assume(dbgi, value);
2186 panic("invalid UNEXPR type found");
2190 * produces a 0/1 depending of the value of a mode_b node
2192 static ir_node *produce_condition_result(const expression_t *expression,
2195 ir_mode *mode = get_ir_mode(expression->base.type);
2196 ir_node *cur_block = get_cur_block();
2198 ir_node *one_block = new_immBlock();
2199 ir_node *one = new_Const(mode, get_mode_one(mode));
2200 ir_node *jmp_one = new_d_Jmp(dbgi);
2202 ir_node *zero_block = new_immBlock();
2203 ir_node *zero = new_Const(mode, get_mode_null(mode));
2204 ir_node *jmp_zero = new_d_Jmp(dbgi);
2206 set_cur_block(cur_block);
2207 create_condition_evaluation(expression, one_block, zero_block);
2208 mature_immBlock(one_block);
2209 mature_immBlock(zero_block);
2211 ir_node *in_cf[2] = { jmp_one, jmp_zero };
2212 new_Block(2, in_cf);
2214 ir_node *in[2] = { one, zero };
2215 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2220 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2221 ir_node *value, type_t *type)
2223 pointer_type_t *const pointer_type = &type->pointer;
2224 type_t *const points_to = skip_typeref(pointer_type->points_to);
2225 unsigned elem_size = get_type_size_const(points_to);
2227 /* gcc extension: allow arithmetic with void * and function * */
2228 if ((elem_size == 0 && is_type_atomic(points_to, ATOMIC_TYPE_VOID)) ||
2229 is_type_function(points_to)) {
2233 assert(elem_size >= 1);
2237 value = create_conv(dbgi, value, mode_int);
2238 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2239 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2243 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2244 ir_node *left, ir_node *right)
2247 type_t *type_left = skip_typeref(expression->left->base.type);
2248 type_t *type_right = skip_typeref(expression->right->base.type);
2250 expression_kind_t kind = expression->base.kind;
2253 case EXPR_BINARY_SHIFTLEFT:
2254 case EXPR_BINARY_SHIFTRIGHT:
2255 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2256 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2257 mode = get_irn_mode(left);
2258 right = create_conv(dbgi, right, mode_uint);
2261 case EXPR_BINARY_SUB:
2262 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2263 const pointer_type_t *const ptr_type = &type_left->pointer;
2265 mode = get_ir_mode(expression->base.type);
2266 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2267 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2268 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2269 ir_node *const no_mem = new_NoMem();
2270 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2271 mode, op_pin_state_floats);
2272 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2275 case EXPR_BINARY_SUB_ASSIGN:
2276 if (is_type_pointer(type_left)) {
2277 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2278 mode = get_ir_mode(type_left);
2283 case EXPR_BINARY_ADD:
2284 case EXPR_BINARY_ADD_ASSIGN:
2285 if (is_type_pointer(type_left)) {
2286 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2287 mode = get_ir_mode(type_left);
2289 } else if (is_type_pointer(type_right)) {
2290 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2291 mode = get_ir_mode(type_right);
2298 mode = get_irn_mode(right);
2299 left = create_conv(dbgi, left, mode);
2304 case EXPR_BINARY_ADD_ASSIGN:
2305 case EXPR_BINARY_ADD:
2306 return new_d_Add(dbgi, left, right, mode);
2307 case EXPR_BINARY_SUB_ASSIGN:
2308 case EXPR_BINARY_SUB:
2309 return new_d_Sub(dbgi, left, right, mode);
2310 case EXPR_BINARY_MUL_ASSIGN:
2311 case EXPR_BINARY_MUL:
2312 return new_d_Mul(dbgi, left, right, mode);
2313 case EXPR_BINARY_BITWISE_AND:
2314 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2315 return new_d_And(dbgi, left, right, mode);
2316 case EXPR_BINARY_BITWISE_OR:
2317 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2318 return new_d_Or(dbgi, left, right, mode);
2319 case EXPR_BINARY_BITWISE_XOR:
2320 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2321 return new_d_Eor(dbgi, left, right, mode);
2322 case EXPR_BINARY_SHIFTLEFT:
2323 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2324 return new_d_Shl(dbgi, left, right, mode);
2325 case EXPR_BINARY_SHIFTRIGHT:
2326 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2327 if (mode_is_signed(mode)) {
2328 return new_d_Shrs(dbgi, left, right, mode);
2330 return new_d_Shr(dbgi, left, right, mode);
2332 case EXPR_BINARY_DIV:
2333 case EXPR_BINARY_DIV_ASSIGN: {
2334 ir_node *pin = new_Pin(new_NoMem());
2337 if (mode_is_float(mode)) {
2338 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2339 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2341 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2342 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2346 case EXPR_BINARY_MOD:
2347 case EXPR_BINARY_MOD_ASSIGN: {
2348 ir_node *pin = new_Pin(new_NoMem());
2349 assert(!mode_is_float(mode));
2350 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2351 op_pin_state_floats);
2352 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2356 panic("unexpected expression kind");
2360 static ir_node *create_lazy_op(const binary_expression_t *expression)
2362 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2363 type_t *type = expression->base.type;
2364 ir_mode *mode = get_ir_mode(type);
2366 if (is_constant_expression(expression->left)) {
2367 long val = fold_constant(expression->left);
2368 expression_kind_t ekind = expression->base.kind;
2369 assert(ekind == EXPR_BINARY_LOGICAL_AND || ekind == EXPR_BINARY_LOGICAL_OR);
2370 if ((ekind == EXPR_BINARY_LOGICAL_AND && val != 0) ||
2371 (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2372 return expression_to_firm(expression->right);
2374 return new_Const(mode, get_mode_one(mode));
2378 return produce_condition_result((const expression_t*) expression, dbgi);
2381 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2382 ir_node *right, ir_mode *mode);
2384 static ir_node *create_assign_binop(const binary_expression_t *expression)
2386 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2387 const expression_t *left_expr = expression->left;
2388 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2389 ir_node *right = expression_to_firm(expression->right);
2390 ir_node *left_addr = expression_to_addr(left_expr);
2391 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2392 ir_node *result = create_op(dbgi, expression, left, right);
2394 result = create_conv(dbgi, result, left_mode);
2395 result = do_strict_conv(dbgi, result);
2397 set_value_for_expression_addr(left_expr, result, left_addr);
2402 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2404 expression_kind_t kind = expression->base.kind;
2407 case EXPR_BINARY_EQUAL:
2408 case EXPR_BINARY_NOTEQUAL:
2409 case EXPR_BINARY_LESS:
2410 case EXPR_BINARY_LESSEQUAL:
2411 case EXPR_BINARY_GREATER:
2412 case EXPR_BINARY_GREATEREQUAL:
2413 case EXPR_BINARY_ISGREATER:
2414 case EXPR_BINARY_ISGREATEREQUAL:
2415 case EXPR_BINARY_ISLESS:
2416 case EXPR_BINARY_ISLESSEQUAL:
2417 case EXPR_BINARY_ISLESSGREATER:
2418 case EXPR_BINARY_ISUNORDERED: {
2419 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2420 ir_node *left = expression_to_firm(expression->left);
2421 ir_node *right = expression_to_firm(expression->right);
2422 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2423 long pnc = get_pnc(kind, expression->left->base.type);
2424 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2427 case EXPR_BINARY_ASSIGN: {
2428 ir_node *addr = expression_to_addr(expression->left);
2429 ir_node *right = expression_to_firm(expression->right);
2430 set_value_for_expression_addr(expression->left, right, addr);
2434 case EXPR_BINARY_ADD:
2435 case EXPR_BINARY_SUB:
2436 case EXPR_BINARY_MUL:
2437 case EXPR_BINARY_DIV:
2438 case EXPR_BINARY_MOD:
2439 case EXPR_BINARY_BITWISE_AND:
2440 case EXPR_BINARY_BITWISE_OR:
2441 case EXPR_BINARY_BITWISE_XOR:
2442 case EXPR_BINARY_SHIFTLEFT:
2443 case EXPR_BINARY_SHIFTRIGHT:
2445 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2446 ir_node *left = expression_to_firm(expression->left);
2447 ir_node *right = expression_to_firm(expression->right);
2448 return create_op(dbgi, expression, left, right);
2450 case EXPR_BINARY_LOGICAL_AND:
2451 case EXPR_BINARY_LOGICAL_OR:
2452 return create_lazy_op(expression);
2453 case EXPR_BINARY_COMMA:
2454 /* create side effects of left side */
2455 (void) expression_to_firm(expression->left);
2456 return _expression_to_firm(expression->right);
2458 case EXPR_BINARY_ADD_ASSIGN:
2459 case EXPR_BINARY_SUB_ASSIGN:
2460 case EXPR_BINARY_MUL_ASSIGN:
2461 case EXPR_BINARY_MOD_ASSIGN:
2462 case EXPR_BINARY_DIV_ASSIGN:
2463 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2464 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2465 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2466 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2467 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2468 return create_assign_binop(expression);
2469 case EXPR_BINARY_BUILTIN_EXPECT:
2470 return _expression_to_firm(expression->left);
2472 panic("TODO binexpr type");
2476 static ir_node *array_access_addr(const array_access_expression_t *expression)
2478 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2479 ir_node *base_addr = expression_to_firm(expression->array_ref);
2480 ir_node *offset = expression_to_firm(expression->index);
2482 type_t *offset_type = skip_typeref(expression->index->base.type);
2484 if (is_type_signed(offset_type)) {
2485 mode = get_ir_mode(type_ssize_t);
2487 mode = get_ir_mode(type_size_t);
2489 offset = create_conv(dbgi, offset, mode);
2491 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2492 assert(is_type_pointer(ref_type));
2493 pointer_type_t *pointer_type = &ref_type->pointer;
2495 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2496 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2497 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2499 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2504 static ir_node *array_access_to_firm(
2505 const array_access_expression_t *expression)
2507 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2508 ir_node *addr = array_access_addr(expression);
2509 type_t *type = revert_automatic_type_conversion(
2510 (const expression_t*) expression);
2511 type = skip_typeref(type);
2513 return deref_address(dbgi, type, addr);
2516 static long get_offsetof_offset(const offsetof_expression_t *expression)
2518 type_t *orig_type = expression->type;
2521 designator_t *designator = expression->designator;
2522 for ( ; designator != NULL; designator = designator->next) {
2523 type_t *type = skip_typeref(orig_type);
2524 /* be sure the type is constructed */
2525 (void) get_ir_type(type);
2527 if (designator->symbol != NULL) {
2528 assert(is_type_compound(type));
2529 symbol_t *symbol = designator->symbol;
2531 compound_t *compound = type->compound.compound;
2532 entity_t *iter = compound->members.entities;
2533 for ( ; iter != NULL; iter = iter->base.next) {
2534 if (iter->base.symbol == symbol) {
2538 assert(iter != NULL);
2540 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
2541 assert(iter->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2542 offset += get_entity_offset(iter->compound_member.entity);
2544 orig_type = iter->declaration.type;
2546 expression_t *array_index = designator->array_index;
2547 assert(designator->array_index != NULL);
2548 assert(is_type_array(type));
2550 long index = fold_constant(array_index);
2551 ir_type *arr_type = get_ir_type(type);
2552 ir_type *elem_type = get_array_element_type(arr_type);
2553 long elem_size = get_type_size_bytes(elem_type);
2555 offset += index * elem_size;
2557 orig_type = type->array.element_type;
2564 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2566 ir_mode *mode = get_ir_mode(expression->base.type);
2567 long offset = get_offsetof_offset(expression);
2568 tarval *tv = new_tarval_from_long(offset, mode);
2569 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2571 return new_d_Const(dbgi, mode, tv);
2574 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2575 ir_entity *entity, type_t *type);
2577 static ir_node *compound_literal_to_firm(
2578 const compound_literal_expression_t *expression)
2580 type_t *type = expression->type;
2582 /* create an entity on the stack */
2583 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2585 ident *const id = id_unique("CompLit.%u");
2586 ir_type *const irtype = get_ir_type(type);
2587 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2588 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2589 set_entity_ld_ident(entity, id);
2591 set_entity_variability(entity, variability_uninitialized);
2593 /* create initialisation code */
2594 initializer_t *initializer = expression->initializer;
2595 create_local_initializer(initializer, dbgi, entity, type);
2597 /* create a sel for the compound literal address */
2598 ir_node *frame = get_local_frame(entity);
2599 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2604 * Transform a sizeof expression into Firm code.
2606 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2608 type_t *type = expression->type;
2610 type = expression->tp_expression->base.type;
2611 assert(type != NULL);
2614 type = skip_typeref(type);
2615 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2616 if (is_type_array(type) && type->array.is_vla
2617 && expression->tp_expression != NULL) {
2618 expression_to_firm(expression->tp_expression);
2621 return get_type_size(type);
2625 * Transform an alignof expression into Firm code.
2627 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2629 type_t *type = expression->type;
2631 /* beware: if expression is a variable reference, return the
2632 alignment of the variable. */
2633 const expression_t *tp_expression = expression->tp_expression;
2634 const entity_t *entity = expression_is_variable(tp_expression);
2635 if (entity != NULL) {
2636 /* TODO: get the alignment of this variable. */
2639 type = tp_expression->base.type;
2640 assert(type != NULL);
2643 ir_mode *const mode = get_ir_mode(expression->base.type);
2644 symconst_symbol sym;
2645 sym.type_p = get_ir_type(type);
2646 return new_SymConst(mode, sym, symconst_type_align);
2649 static void init_ir_types(void);
2651 long fold_constant(const expression_t *expression)
2653 assert(is_type_valid(skip_typeref(expression->base.type)));
2655 bool constant_folding_old = constant_folding;
2656 constant_folding = true;
2660 assert(is_constant_expression(expression));
2662 ir_graph *old_current_ir_graph = current_ir_graph;
2663 if (current_ir_graph == NULL) {
2664 current_ir_graph = get_const_code_irg();
2667 ir_node *cnst = expression_to_firm(expression);
2668 current_ir_graph = old_current_ir_graph;
2670 if (!is_Const(cnst)) {
2671 panic("couldn't fold constant\n");
2674 tarval *tv = get_Const_tarval(cnst);
2675 if (!tarval_is_long(tv)) {
2676 panic("result of constant folding is not integer\n");
2679 constant_folding = constant_folding_old;
2681 return get_tarval_long(tv);
2684 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2686 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2688 /* first try to fold a constant condition */
2689 if (is_constant_expression(expression->condition)) {
2690 long val = fold_constant(expression->condition);
2692 expression_t *true_expression = expression->true_expression;
2693 if (true_expression == NULL)
2694 true_expression = expression->condition;
2695 return expression_to_firm(true_expression);
2697 return expression_to_firm(expression->false_expression);
2701 ir_node *cur_block = get_cur_block();
2703 /* create the true block */
2704 ir_node *true_block = new_immBlock();
2706 ir_node *true_val = expression->true_expression != NULL ?
2707 expression_to_firm(expression->true_expression) : NULL;
2708 ir_node *true_jmp = new_Jmp();
2710 /* create the false block */
2711 ir_node *false_block = new_immBlock();
2713 ir_node *false_val = expression_to_firm(expression->false_expression);
2714 ir_node *false_jmp = new_Jmp();
2716 /* create the condition evaluation */
2717 set_cur_block(cur_block);
2718 ir_node *const cond_expr = create_condition_evaluation(expression->condition, true_block, false_block);
2719 if (expression->true_expression == NULL) {
2720 if (cond_expr != NULL) {
2721 true_val = cond_expr;
2723 /* Condition ended with a short circuit (&&, ||, !) operation.
2724 * Generate a "1" as value for the true branch. */
2725 ir_mode *const mode = mode_Is;
2726 true_val = new_Const(mode, get_mode_one(mode));
2729 mature_immBlock(true_block);
2730 mature_immBlock(false_block);
2732 /* create the common block */
2733 ir_node *in_cf[2] = { true_jmp, false_jmp };
2734 new_Block(2, in_cf);
2736 /* TODO improve static semantics, so either both or no values are NULL */
2737 if (true_val == NULL || false_val == NULL)
2740 ir_node *in[2] = { true_val, false_val };
2741 ir_mode *mode = get_irn_mode(true_val);
2742 assert(get_irn_mode(false_val) == mode);
2743 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2749 * Returns an IR-node representing the address of a field.
2751 static ir_node *select_addr(const select_expression_t *expression)
2753 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2755 construct_select_compound(expression);
2757 ir_node *compound_addr = expression_to_firm(expression->compound);
2759 entity_t *entry = expression->compound_entry;
2760 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2761 assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
2762 ir_entity *irentity = entry->compound_member.entity;
2764 assert(irentity != NULL);
2766 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, irentity);
2771 static ir_node *select_to_firm(const select_expression_t *expression)
2773 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2774 ir_node *addr = select_addr(expression);
2775 type_t *type = revert_automatic_type_conversion(
2776 (const expression_t*) expression);
2777 type = skip_typeref(type);
2779 entity_t *entry = expression->compound_entry;
2780 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
2781 type_t *entry_type = skip_typeref(entry->declaration.type);
2783 if (entry_type->kind == TYPE_BITFIELD) {
2784 return bitfield_extract_to_firm(expression, addr);
2787 return deref_address(dbgi, type, addr);
2790 /* Values returned by __builtin_classify_type. */
2791 typedef enum gcc_type_class
2797 enumeral_type_class,
2800 reference_type_class,
2804 function_type_class,
2815 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2817 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2823 const atomic_type_t *const atomic_type = &type->atomic;
2824 switch (atomic_type->akind) {
2825 /* should not be reached */
2826 case ATOMIC_TYPE_INVALID:
2830 /* gcc cannot do that */
2831 case ATOMIC_TYPE_VOID:
2832 tc = void_type_class;
2835 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2836 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2837 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2838 case ATOMIC_TYPE_SHORT:
2839 case ATOMIC_TYPE_USHORT:
2840 case ATOMIC_TYPE_INT:
2841 case ATOMIC_TYPE_UINT:
2842 case ATOMIC_TYPE_LONG:
2843 case ATOMIC_TYPE_ULONG:
2844 case ATOMIC_TYPE_LONGLONG:
2845 case ATOMIC_TYPE_ULONGLONG:
2846 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2847 tc = integer_type_class;
2850 case ATOMIC_TYPE_FLOAT:
2851 case ATOMIC_TYPE_DOUBLE:
2852 case ATOMIC_TYPE_LONG_DOUBLE:
2853 tc = real_type_class;
2856 panic("Unexpected atomic type in classify_type_to_firm().");
2859 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2860 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2861 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2862 case TYPE_ARRAY: /* gcc handles this as pointer */
2863 case TYPE_FUNCTION: /* gcc handles this as pointer */
2864 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2865 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2866 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2868 /* gcc handles this as integer */
2869 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2872 /* typedef/typeof should be skipped already */
2879 panic("unexpected TYPE classify_type_to_firm().");
2882 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2883 ir_mode *const mode = mode_int;
2884 tarval *const tv = new_tarval_from_long(tc, mode);
2885 return new_d_Const(dbgi, mode, tv);
2888 static ir_node *function_name_to_firm(
2889 const funcname_expression_t *const expr)
2891 switch(expr->kind) {
2892 case FUNCNAME_FUNCTION:
2893 case FUNCNAME_PRETTY_FUNCTION:
2894 case FUNCNAME_FUNCDNAME:
2895 if (current_function_name == NULL) {
2896 const source_position_t *const src_pos = &expr->base.source_position;
2897 const char *name = current_function_entity->base.symbol->string;
2898 const string_t string = { name, strlen(name) + 1 };
2899 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2901 return current_function_name;
2902 case FUNCNAME_FUNCSIG:
2903 if (current_funcsig == NULL) {
2904 const source_position_t *const src_pos = &expr->base.source_position;
2905 ir_entity *ent = get_irg_entity(current_ir_graph);
2906 const char *const name = get_entity_ld_name(ent);
2907 const string_t string = { name, strlen(name) + 1 };
2908 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2910 return current_funcsig;
2912 panic("Unsupported function name");
2915 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2917 statement_t *statement = expr->statement;
2919 assert(statement->kind == STATEMENT_COMPOUND);
2920 return compound_statement_to_firm(&statement->compound);
2923 static ir_node *va_start_expression_to_firm(
2924 const va_start_expression_t *const expr)
2926 type_t *const type = current_function_entity->declaration.type;
2927 ir_type *const method_type = get_ir_type(type);
2928 int const n = get_method_n_params(method_type) - 1;
2929 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2930 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2931 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2932 ir_node *const no_mem = new_NoMem();
2933 ir_node *const arg_sel =
2934 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2936 ir_node *const cnst = get_type_size(expr->parameter->base.type);
2937 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2938 set_value_for_expression(expr->ap, add);
2943 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2945 type_t *const type = expr->base.type;
2946 expression_t *const ap_expr = expr->ap;
2947 ir_node *const ap_addr = expression_to_addr(ap_expr);
2948 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2949 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2950 ir_node *const res = deref_address(dbgi, type, ap);
2952 ir_node *const cnst = get_type_size(expr->base.type);
2953 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2955 set_value_for_expression_addr(ap_expr, add, ap_addr);
2960 static ir_node *dereference_addr(const unary_expression_t *const expression)
2962 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2963 return expression_to_firm(expression->value);
2967 * Returns a IR-node representing an lvalue of the given expression.
2969 static ir_node *expression_to_addr(const expression_t *expression)
2971 switch(expression->kind) {
2972 case EXPR_REFERENCE:
2973 return reference_addr(&expression->reference);
2974 case EXPR_ARRAY_ACCESS:
2975 return array_access_addr(&expression->array_access);
2977 return select_addr(&expression->select);
2979 return call_expression_to_firm(&expression->call);
2980 case EXPR_UNARY_DEREFERENCE: {
2981 return dereference_addr(&expression->unary);
2986 panic("trying to get address of non-lvalue");
2989 static ir_node *builtin_constant_to_firm(
2990 const builtin_constant_expression_t *expression)
2992 ir_mode *mode = get_ir_mode(expression->base.type);
2995 if (is_constant_expression(expression->value)) {
3000 return new_Const_long(mode, v);
3003 static ir_node *builtin_prefetch_to_firm(
3004 const builtin_prefetch_expression_t *expression)
3006 ir_node *adr = expression_to_firm(expression->adr);
3007 /* no Firm support for prefetch yet */
3012 static ir_node *get_label_block(label_t *label)
3014 if (label->block != NULL)
3015 return label->block;
3017 /* beware: might be called from create initializer with current_ir_graph
3018 * set to const_code_irg. */
3019 ir_graph *rem = current_ir_graph;
3020 current_ir_graph = current_function;
3022 ir_node *old_cur_block = get_cur_block();
3023 ir_node *block = new_immBlock();
3024 set_cur_block(old_cur_block);
3026 label->block = block;
3028 ARR_APP1(label_t *, all_labels, label);
3030 current_ir_graph = rem;
3035 * Pointer to a label. This is used for the
3036 * GNU address-of-label extension.
3038 static ir_node *label_address_to_firm(
3039 const label_address_expression_t *label)
3041 ir_node *block = get_label_block(label->label);
3042 ir_label_t nr = get_Block_label(block);
3045 nr = get_irp_next_label_nr();
3046 set_Block_label(block, nr);
3048 symconst_symbol value;
3050 return new_SymConst(mode_P_code, value, symconst_label);
3054 * creates firm nodes for an expression. The difference between this function
3055 * and expression_to_firm is, that this version might produce mode_b nodes
3056 * instead of mode_Is.
3058 static ir_node *_expression_to_firm(const expression_t *expression)
3061 if (!constant_folding) {
3062 assert(!expression->base.transformed);
3063 ((expression_t*) expression)->base.transformed = true;
3067 switch (expression->kind) {
3068 case EXPR_CHARACTER_CONSTANT:
3069 return character_constant_to_firm(&expression->conste);
3070 case EXPR_WIDE_CHARACTER_CONSTANT:
3071 return wide_character_constant_to_firm(&expression->conste);
3073 return const_to_firm(&expression->conste);
3074 case EXPR_STRING_LITERAL:
3075 return string_literal_to_firm(&expression->string);
3076 case EXPR_WIDE_STRING_LITERAL:
3077 return wide_string_literal_to_firm(&expression->wide_string);
3078 case EXPR_REFERENCE:
3079 return reference_expression_to_firm(&expression->reference);
3080 case EXPR_REFERENCE_ENUM_VALUE:
3081 return reference_expression_enum_value_to_firm(&expression->reference);
3083 return call_expression_to_firm(&expression->call);
3085 return unary_expression_to_firm(&expression->unary);
3087 return binary_expression_to_firm(&expression->binary);
3088 case EXPR_ARRAY_ACCESS:
3089 return array_access_to_firm(&expression->array_access);
3091 return sizeof_to_firm(&expression->typeprop);
3093 return alignof_to_firm(&expression->typeprop);
3094 case EXPR_CONDITIONAL:
3095 return conditional_to_firm(&expression->conditional);
3097 return select_to_firm(&expression->select);
3098 case EXPR_CLASSIFY_TYPE:
3099 return classify_type_to_firm(&expression->classify_type);
3101 return function_name_to_firm(&expression->funcname);
3102 case EXPR_STATEMENT:
3103 return statement_expression_to_firm(&expression->statement);
3105 return va_start_expression_to_firm(&expression->va_starte);
3107 return va_arg_expression_to_firm(&expression->va_arge);
3108 case EXPR_BUILTIN_SYMBOL:
3109 panic("unimplemented expression found");
3110 case EXPR_BUILTIN_CONSTANT_P:
3111 return builtin_constant_to_firm(&expression->builtin_constant);
3112 case EXPR_BUILTIN_PREFETCH:
3113 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
3115 return offsetof_to_firm(&expression->offsetofe);
3116 case EXPR_COMPOUND_LITERAL:
3117 return compound_literal_to_firm(&expression->compound_literal);
3118 case EXPR_LABEL_ADDRESS:
3119 return label_address_to_firm(&expression->label_address);
3125 panic("invalid expression found");
3128 static bool produces_mode_b(const expression_t *expression)
3130 switch (expression->kind) {
3131 case EXPR_BINARY_EQUAL:
3132 case EXPR_BINARY_NOTEQUAL:
3133 case EXPR_BINARY_LESS:
3134 case EXPR_BINARY_LESSEQUAL:
3135 case EXPR_BINARY_GREATER:
3136 case EXPR_BINARY_GREATEREQUAL:
3137 case EXPR_BINARY_ISGREATER:
3138 case EXPR_BINARY_ISGREATEREQUAL:
3139 case EXPR_BINARY_ISLESS:
3140 case EXPR_BINARY_ISLESSEQUAL:
3141 case EXPR_BINARY_ISLESSGREATER:
3142 case EXPR_BINARY_ISUNORDERED:
3143 case EXPR_UNARY_NOT:
3146 case EXPR_BINARY_BUILTIN_EXPECT:
3147 return produces_mode_b(expression->binary.left);
3148 case EXPR_BINARY_COMMA:
3149 return produces_mode_b(expression->binary.right);
3156 static ir_node *expression_to_firm(const expression_t *expression)
3158 if (!produces_mode_b(expression)) {
3159 ir_node *res = _expression_to_firm(expression);
3160 assert(res == NULL || get_irn_mode(res) != mode_b);
3164 if (is_constant_expression(expression)) {
3165 ir_node *res = _expression_to_firm(expression);
3166 ir_mode *mode = get_ir_mode(expression->base.type);
3167 assert(is_Const(res));
3168 if (is_Const_null(res)) {
3169 return new_Const_long(mode, 0);
3171 return new_Const_long(mode, 1);
3175 /* we have to produce a 0/1 from the mode_b expression */
3176 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3177 return produce_condition_result(expression, dbgi);
3181 * create a short-circuit expression evaluation that tries to construct
3182 * efficient control flow structures for &&, || and ! expressions
3184 static ir_node *create_condition_evaluation(const expression_t *expression,
3185 ir_node *true_block,
3186 ir_node *false_block)
3188 switch(expression->kind) {
3189 case EXPR_UNARY_NOT: {
3190 const unary_expression_t *unary_expression = &expression->unary;
3191 create_condition_evaluation(unary_expression->value, false_block,
3195 case EXPR_BINARY_LOGICAL_AND: {
3196 const binary_expression_t *binary_expression = &expression->binary;
3198 ir_node *cur_block = get_cur_block();
3199 ir_node *extra_block = new_immBlock();
3200 set_cur_block(cur_block);
3201 create_condition_evaluation(binary_expression->left, extra_block,
3203 mature_immBlock(extra_block);
3204 set_cur_block(extra_block);
3205 create_condition_evaluation(binary_expression->right, true_block,
3209 case EXPR_BINARY_LOGICAL_OR: {
3210 const binary_expression_t *binary_expression = &expression->binary;
3212 ir_node *cur_block = get_cur_block();
3213 ir_node *extra_block = new_immBlock();
3214 set_cur_block(cur_block);
3215 create_condition_evaluation(binary_expression->left, true_block,
3217 mature_immBlock(extra_block);
3218 set_cur_block(extra_block);
3219 create_condition_evaluation(binary_expression->right, true_block,
3227 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
3228 ir_node *cond_expr = _expression_to_firm(expression);
3229 ir_node *condition = create_conv(dbgi, cond_expr, mode_b);
3230 ir_node *cond = new_d_Cond(dbgi, condition);
3231 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3232 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3234 /* set branch prediction info based on __builtin_expect */
3235 if (expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3236 long cnst = fold_constant(expression->binary.right);
3237 cond_jmp_predicate pred;
3240 pred = COND_JMP_PRED_FALSE;
3242 pred = COND_JMP_PRED_TRUE;
3244 set_Cond_jmp_pred(cond, pred);
3247 add_immBlock_pred(true_block, true_proj);
3248 if (false_block != NULL) {
3249 add_immBlock_pred(false_block, false_proj);
3252 set_cur_block(NULL);
3257 static void create_variable_entity(entity_t *variable,
3258 declaration_kind_t declaration_kind,
3259 ir_type *parent_type)
3261 assert(variable->kind == ENTITY_VARIABLE);
3262 type_t *const type = skip_typeref(variable->declaration.type);
3263 ident *const id = new_id_from_str(variable->base.symbol->string);
3264 ir_type *const irtype = get_ir_type(type);
3265 dbg_info *const dbgi = get_dbg_info(&variable->base.source_position);
3266 ir_entity *const irentity = new_d_entity(parent_type, id, irtype, dbgi);
3268 handle_gnu_attributes_ent(irentity, variable);
3270 variable->declaration.kind = (unsigned char) declaration_kind;
3271 variable->variable.v.entity = irentity;
3272 set_entity_variability(irentity, variability_uninitialized);
3273 set_entity_ld_ident(irentity, create_ld_ident(irentity, variable));
3274 if (parent_type == get_tls_type())
3275 set_entity_allocation(irentity, allocation_automatic);
3276 else if (declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3277 set_entity_allocation(irentity, allocation_static);
3279 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3280 set_entity_volatility(irentity, volatility_is_volatile);
3285 typedef struct type_path_entry_t type_path_entry_t;
3286 struct type_path_entry_t {
3288 ir_initializer_t *initializer;
3290 entity_t *compound_entry;
3293 typedef struct type_path_t type_path_t;
3294 struct type_path_t {
3295 type_path_entry_t *path;
3300 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3302 size_t len = ARR_LEN(path->path);
3304 for (size_t i = 0; i < len; ++i) {
3305 const type_path_entry_t *entry = & path->path[i];
3307 type_t *type = skip_typeref(entry->type);
3308 if (is_type_compound(type)) {
3309 fprintf(stderr, ".%s", entry->compound_entry->base.symbol->string);
3310 } else if (is_type_array(type)) {
3311 fprintf(stderr, "[%zu]", entry->index);
3313 fprintf(stderr, "-INVALID-");
3316 fprintf(stderr, " (");
3317 print_type(path->top_type);
3318 fprintf(stderr, ")");
3321 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3323 size_t len = ARR_LEN(path->path);
3325 return & path->path[len-1];
3328 static type_path_entry_t *append_to_type_path(type_path_t *path)
3330 size_t len = ARR_LEN(path->path);
3331 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3333 type_path_entry_t *result = & path->path[len];
3334 memset(result, 0, sizeof(result[0]));
3338 static size_t get_compound_member_count(const compound_type_t *type)
3340 compound_t *compound = type->compound;
3341 size_t n_members = 0;
3342 entity_t *member = compound->members.entities;
3343 for ( ; member != NULL; member = member->base.next) {
3350 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3352 type_t *orig_top_type = path->top_type;
3353 type_t *top_type = skip_typeref(orig_top_type);
3355 assert(is_type_compound(top_type) || is_type_array(top_type));
3357 if (ARR_LEN(path->path) == 0) {
3360 type_path_entry_t *top = get_type_path_top(path);
3361 ir_initializer_t *initializer = top->initializer;
3362 return get_initializer_compound_value(initializer, top->index);
3366 static void descend_into_subtype(type_path_t *path)
3368 type_t *orig_top_type = path->top_type;
3369 type_t *top_type = skip_typeref(orig_top_type);
3371 assert(is_type_compound(top_type) || is_type_array(top_type));
3373 ir_initializer_t *initializer = get_initializer_entry(path);
3375 type_path_entry_t *top = append_to_type_path(path);
3376 top->type = top_type;
3380 if (is_type_compound(top_type)) {
3381 compound_t *compound = top_type->compound.compound;
3382 entity_t *entry = compound->members.entities;
3384 top->compound_entry = entry;
3386 len = get_compound_member_count(&top_type->compound);
3387 if (entry != NULL) {
3388 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3389 path->top_type = entry->declaration.type;
3392 assert(is_type_array(top_type));
3393 assert(top_type->array.size > 0);
3396 path->top_type = top_type->array.element_type;
3397 len = top_type->array.size;
3399 if (initializer == NULL
3400 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3401 initializer = create_initializer_compound(len);
3402 /* we have to set the entry at the 2nd latest path entry... */
3403 size_t path_len = ARR_LEN(path->path);
3404 assert(path_len >= 1);
3406 type_path_entry_t *entry = & path->path[path_len-2];
3407 ir_initializer_t *tinitializer = entry->initializer;
3408 set_initializer_compound_value(tinitializer, entry->index,
3412 top->initializer = initializer;
3415 static void ascend_from_subtype(type_path_t *path)
3417 type_path_entry_t *top = get_type_path_top(path);
3419 path->top_type = top->type;
3421 size_t len = ARR_LEN(path->path);
3422 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3425 static void walk_designator(type_path_t *path, const designator_t *designator)
3427 /* designators start at current object type */
3428 ARR_RESIZE(type_path_entry_t, path->path, 1);
3430 for ( ; designator != NULL; designator = designator->next) {
3431 type_path_entry_t *top = get_type_path_top(path);
3432 type_t *orig_type = top->type;
3433 type_t *type = skip_typeref(orig_type);
3435 if (designator->symbol != NULL) {
3436 assert(is_type_compound(type));
3438 symbol_t *symbol = designator->symbol;
3440 compound_t *compound = type->compound.compound;
3441 entity_t *iter = compound->members.entities;
3442 for ( ; iter != NULL; iter = iter->base.next, ++index) {
3443 if (iter->base.symbol == symbol) {
3444 assert(iter->kind == ENTITY_COMPOUND_MEMBER);
3448 assert(iter != NULL);
3450 top->type = orig_type;
3451 top->compound_entry = iter;
3453 orig_type = iter->declaration.type;
3455 expression_t *array_index = designator->array_index;
3456 assert(designator->array_index != NULL);
3457 assert(is_type_array(type));
3459 long index = fold_constant(array_index);
3462 if (type->array.size_constant) {
3463 long array_size = type->array.size;
3464 assert(index < array_size);
3468 top->type = orig_type;
3469 top->index = (size_t) index;
3470 orig_type = type->array.element_type;
3472 path->top_type = orig_type;
3474 if (designator->next != NULL) {
3475 descend_into_subtype(path);
3479 path->invalid = false;
3482 static void advance_current_object(type_path_t *path)
3484 if (path->invalid) {
3485 /* TODO: handle this... */
3486 panic("invalid initializer in ast2firm (excessive elements)");
3490 type_path_entry_t *top = get_type_path_top(path);
3492 type_t *type = skip_typeref(top->type);
3493 if (is_type_union(type)) {
3494 top->compound_entry = NULL;
3495 } else if (is_type_struct(type)) {
3496 entity_t *entry = top->compound_entry;
3499 entry = entry->base.next;
3500 top->compound_entry = entry;
3501 if (entry != NULL) {
3502 assert(entry->kind == ENTITY_COMPOUND_MEMBER);
3503 path->top_type = entry->declaration.type;
3507 assert(is_type_array(type));
3510 if (!type->array.size_constant || top->index < type->array.size) {
3515 /* we're past the last member of the current sub-aggregate, try if we
3516 * can ascend in the type hierarchy and continue with another subobject */
3517 size_t len = ARR_LEN(path->path);
3520 ascend_from_subtype(path);
3521 advance_current_object(path);
3523 path->invalid = true;
3528 static ir_initializer_t *create_ir_initializer(
3529 const initializer_t *initializer, type_t *type);
3531 static ir_initializer_t *create_ir_initializer_value(
3532 const initializer_value_t *initializer)
3534 if (is_type_compound(initializer->value->base.type)) {
3535 panic("initializer creation for compounds not implemented yet");
3537 ir_node *value = expression_to_firm(initializer->value);
3538 return create_initializer_const(value);
3541 static ir_initializer_t *create_ir_initializer_list(
3542 const initializer_list_t *initializer, type_t *type)
3545 memset(&path, 0, sizeof(path));
3546 path.top_type = type;
3547 path.path = NEW_ARR_F(type_path_entry_t, 0);
3549 descend_into_subtype(&path);
3551 for (size_t i = 0; i < initializer->len; ++i) {
3552 const initializer_t *sub_initializer = initializer->initializers[i];
3554 if (sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3555 walk_designator(&path, sub_initializer->designator.designator);
3559 if (sub_initializer->kind == INITIALIZER_VALUE) {
3560 /* we might have to descend into types until we're at a scalar
3563 type_t *orig_top_type = path.top_type;
3564 type_t *top_type = skip_typeref(orig_top_type);
3566 if (is_type_scalar(top_type))
3568 descend_into_subtype(&path);
3572 ir_initializer_t *sub_irinitializer
3573 = create_ir_initializer(sub_initializer, path.top_type);
3575 size_t path_len = ARR_LEN(path.path);
3576 assert(path_len >= 1);
3577 type_path_entry_t *entry = & path.path[path_len-1];
3578 ir_initializer_t *tinitializer = entry->initializer;
3579 set_initializer_compound_value(tinitializer, entry->index,
3582 advance_current_object(&path);
3585 assert(ARR_LEN(path.path) >= 1);
3586 ir_initializer_t *result = path.path[0].initializer;
3587 DEL_ARR_F(path.path);
3592 static ir_initializer_t *create_ir_initializer_string(
3593 const initializer_string_t *initializer, type_t *type)
3595 type = skip_typeref(type);
3597 size_t string_len = initializer->string.size;
3598 assert(type->kind == TYPE_ARRAY);
3599 assert(type->array.size_constant);
3600 size_t len = type->array.size;
3601 ir_initializer_t *irinitializer = create_initializer_compound(len);
3603 const char *string = initializer->string.begin;
3604 ir_mode *mode = get_ir_mode(type->array.element_type);
3606 for (size_t i = 0; i < len; ++i) {
3611 tarval *tv = new_tarval_from_long(c, mode);
3612 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3614 set_initializer_compound_value(irinitializer, i, char_initializer);
3617 return irinitializer;
3620 static ir_initializer_t *create_ir_initializer_wide_string(
3621 const initializer_wide_string_t *initializer, type_t *type)
3623 size_t string_len = initializer->string.size;
3624 assert(type->kind == TYPE_ARRAY);
3625 assert(type->array.size_constant);
3626 size_t len = type->array.size;
3627 ir_initializer_t *irinitializer = create_initializer_compound(len);
3629 const wchar_rep_t *string = initializer->string.begin;
3630 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3632 for (size_t i = 0; i < len; ++i) {
3634 if (i < string_len) {
3637 tarval *tv = new_tarval_from_long(c, mode);
3638 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3640 set_initializer_compound_value(irinitializer, i, char_initializer);
3643 return irinitializer;
3646 static ir_initializer_t *create_ir_initializer(
3647 const initializer_t *initializer, type_t *type)
3649 switch(initializer->kind) {
3650 case INITIALIZER_STRING:
3651 return create_ir_initializer_string(&initializer->string, type);
3653 case INITIALIZER_WIDE_STRING:
3654 return create_ir_initializer_wide_string(&initializer->wide_string,
3657 case INITIALIZER_LIST:
3658 return create_ir_initializer_list(&initializer->list, type);
3660 case INITIALIZER_VALUE:
3661 return create_ir_initializer_value(&initializer->value);
3663 case INITIALIZER_DESIGNATOR:
3664 panic("unexpected designator initializer found");
3666 panic("unknown initializer");
3669 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3672 if (is_atomic_type(type)) {
3673 ir_mode *mode = get_type_mode(type);
3674 tarval *zero = get_mode_null(mode);
3675 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3677 /* TODO: bitfields */
3678 ir_node *mem = get_store();
3679 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3680 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3683 assert(is_compound_type(type));
3686 if (is_Array_type(type)) {
3687 assert(has_array_upper_bound(type, 0));
3688 n_members = get_array_upper_bound_int(type, 0);
3690 n_members = get_compound_n_members(type);
3693 for (int i = 0; i < n_members; ++i) {
3696 if (is_Array_type(type)) {
3697 ir_entity *entity = get_array_element_entity(type);
3698 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3699 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3700 ir_node *in[1] = { cnst };
3701 irtype = get_array_element_type(type);
3702 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3704 ir_entity *member = get_compound_member(type, i);
3706 irtype = get_entity_type(member);
3707 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3710 create_dynamic_null_initializer(irtype, dbgi, addr);
3715 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3716 ir_entity *entity, ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3718 switch(get_initializer_kind(initializer)) {
3719 case IR_INITIALIZER_NULL: {
3720 create_dynamic_null_initializer(type, dbgi, base_addr);
3723 case IR_INITIALIZER_CONST: {
3724 ir_node *node = get_initializer_const_value(initializer);
3725 ir_mode *mode = get_irn_mode(node);
3726 ir_type *ent_type = get_entity_type(entity);
3728 /* is it a bitfield type? */
3729 if (is_Primitive_type(ent_type) &&
3730 get_primitive_base_type(ent_type) != NULL) {
3731 bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
3735 assert(get_type_mode(type) == mode);
3736 ir_node *mem = get_store();
3737 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3738 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3742 case IR_INITIALIZER_TARVAL: {
3743 tarval *tv = get_initializer_tarval_value(initializer);
3744 ir_mode *mode = get_tarval_mode(tv);
3745 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3746 ir_type *ent_type = get_entity_type(entity);
3748 /* is it a bitfield type? */
3749 if (is_Primitive_type(ent_type) &&
3750 get_primitive_base_type(ent_type) != NULL) {
3751 bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
3755 assert(get_type_mode(type) == mode);
3756 ir_node *mem = get_store();
3757 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3758 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3762 case IR_INITIALIZER_COMPOUND: {
3763 assert(is_compound_type(type));
3765 if (is_Array_type(type)) {
3766 assert(has_array_upper_bound(type, 0));
3767 n_members = get_array_upper_bound_int(type, 0);
3769 n_members = get_compound_n_members(type);
3772 if (get_initializer_compound_n_entries(initializer)
3773 != (unsigned) n_members)
3774 panic("initializer doesn't match compound type");
3776 for (int i = 0; i < n_members; ++i) {
3779 ir_entity *sub_entity;
3780 if (is_Array_type(type)) {
3781 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3782 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3783 ir_node *in[1] = { cnst };
3784 irtype = get_array_element_type(type);
3785 sub_entity = get_array_element_entity(type);
3786 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in,
3789 sub_entity = get_compound_member(type, i);
3790 irtype = get_entity_type(sub_entity);
3791 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr,
3795 ir_initializer_t *sub_init
3796 = get_initializer_compound_value(initializer, i);
3798 create_dynamic_initializer_sub(sub_init, sub_entity, irtype, dbgi,
3805 panic("invalid IR_INITIALIZER found");
3808 static void create_dynamic_initializer(ir_initializer_t *initializer,
3809 dbg_info *dbgi, ir_entity *entity)
3811 ir_node *frame = get_local_frame(entity);
3812 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3813 ir_type *type = get_entity_type(entity);
3815 create_dynamic_initializer_sub(initializer, entity, type, dbgi, base_addr);
3818 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3819 ir_entity *entity, type_t *type)
3821 ir_node *memory = get_store();
3822 ir_node *nomem = new_NoMem();
3823 ir_node *frame = get_irg_frame(current_ir_graph);
3824 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3826 if (initializer->kind == INITIALIZER_VALUE) {
3827 initializer_value_t *initializer_value = &initializer->value;
3829 ir_node *value = expression_to_firm(initializer_value->value);
3830 type = skip_typeref(type);
3831 assign_value(dbgi, addr, type, value);
3835 if (!is_constant_initializer(initializer)) {
3836 ir_initializer_t *irinitializer
3837 = create_ir_initializer(initializer, type);
3839 create_dynamic_initializer(irinitializer, dbgi, entity);
3843 /* create the ir_initializer */
3844 ir_graph *const old_current_ir_graph = current_ir_graph;
3845 current_ir_graph = get_const_code_irg();
3847 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3849 assert(current_ir_graph == get_const_code_irg());
3850 current_ir_graph = old_current_ir_graph;
3852 /* create a "template" entity which is copied to the entity on the stack */
3853 ident *const id = id_unique("initializer.%u");
3854 ir_type *const irtype = get_ir_type(type);
3855 ir_type *const global_type = get_glob_type();
3856 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3857 set_entity_ld_ident(init_entity, id);
3859 set_entity_variability(init_entity, variability_initialized);
3860 set_entity_visibility(init_entity, visibility_local);
3861 set_entity_allocation(init_entity, allocation_static);
3863 set_entity_initializer(init_entity, irinitializer);
3865 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3866 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3868 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3869 set_store(copyb_mem);
3872 static void create_initializer_local_variable_entity(entity_t *entity)
3874 assert(entity->kind == ENTITY_VARIABLE);
3875 initializer_t *initializer = entity->variable.initializer;
3876 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3877 ir_entity *irentity = entity->variable.v.entity;
3878 type_t *type = entity->declaration.type;
3879 create_local_initializer(initializer, dbgi, irentity, type);
3882 static void create_variable_initializer(entity_t *entity)
3884 assert(entity->kind == ENTITY_VARIABLE);
3885 initializer_t *initializer = entity->variable.initializer;
3886 if (initializer == NULL)
3889 declaration_kind_t declaration_kind
3890 = (declaration_kind_t) entity->declaration.kind;
3891 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3892 create_initializer_local_variable_entity(entity);
3896 type_t *type = entity->declaration.type;
3897 type_qualifiers_t tq = get_type_qualifier(type, true);
3899 if (initializer->kind == INITIALIZER_VALUE) {
3900 initializer_value_t *initializer_value = &initializer->value;
3901 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3903 ir_node *value = expression_to_firm(initializer_value->value);
3904 value = do_strict_conv(dbgi, value);
3906 if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3907 set_value(entity->variable.v.value_number, value);
3909 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3911 ir_entity *irentity = entity->variable.v.entity;
3913 if (tq & TYPE_QUALIFIER_CONST) {
3914 set_entity_variability(irentity, variability_constant);
3916 set_entity_variability(irentity, variability_initialized);
3918 set_atomic_ent_value(irentity, value);
3921 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
3922 declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3924 ir_entity *irentity = entity->variable.v.entity;
3925 ir_initializer_t *irinitializer
3926 = create_ir_initializer(initializer, type);
3928 if (tq & TYPE_QUALIFIER_CONST) {
3929 set_entity_variability(irentity, variability_constant);
3931 set_entity_variability(irentity, variability_initialized);
3933 set_entity_initializer(irentity, irinitializer);
3937 static void create_variable_length_array(entity_t *entity)
3939 assert(entity->kind == ENTITY_VARIABLE);
3940 assert(entity->variable.initializer == NULL);
3942 entity->declaration.kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3943 entity->variable.v.vla_base = NULL;
3945 /* TODO: record VLA somewhere so we create the free node when we leave
3949 static void allocate_variable_length_array(entity_t *entity)
3951 assert(entity->kind == ENTITY_VARIABLE);
3952 assert(entity->variable.initializer == NULL);
3953 assert(get_cur_block() != NULL);
3955 dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
3956 type_t *type = entity->declaration.type;
3957 ir_type *el_type = get_ir_type(type->array.element_type);
3959 /* make sure size_node is calculated */
3960 get_type_size(type);
3961 ir_node *elems = type->array.size_node;
3962 ir_node *mem = get_store();
3963 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3965 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3966 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3969 assert(entity->declaration.kind == DECLARATION_KIND_VARIABLE_LENGTH_ARRAY);
3970 entity->variable.v.vla_base = addr;
3974 * Creates a Firm local variable from a declaration.
3976 static void create_local_variable(entity_t *entity)
3978 assert(entity->kind == ENTITY_VARIABLE);
3979 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
3981 bool needs_entity = entity->variable.address_taken;
3982 type_t *type = skip_typeref(entity->declaration.type);
3984 /* is it a variable length array? */
3985 if (is_type_array(type) && !type->array.size_constant) {
3986 create_variable_length_array(entity);
3988 } else if (is_type_array(type) || is_type_compound(type)) {
3989 needs_entity = true;
3990 } else if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3991 needs_entity = true;
3995 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3996 create_variable_entity(entity,
3997 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
4000 entity->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
4001 entity->variable.v.value_number = next_value_number_function;
4002 set_irg_loc_description(current_ir_graph, next_value_number_function,
4003 (variable_t*) &entity->variable);
4004 ++next_value_number_function;
4008 static void create_local_static_variable(entity_t *entity)
4010 assert(entity->kind == ENTITY_VARIABLE);
4011 assert(entity->declaration.kind == DECLARATION_KIND_UNKNOWN);
4013 type_t *const type = skip_typeref(entity->declaration.type);
4014 ir_type *const global_type = get_glob_type();
4015 ir_type *const irtype = get_ir_type(type);
4016 dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
4018 size_t l = strlen(entity->base.symbol->string);
4019 char buf[l + sizeof(".%u")];
4020 snprintf(buf, sizeof(buf), "%s.%%u", entity->base.symbol->string);
4021 ident *const id = id_unique(buf);
4023 ir_entity *const irentity = new_d_entity(global_type, id, irtype, dbgi);
4025 if (type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
4026 set_entity_volatility(irentity, volatility_is_volatile);
4029 entity->declaration.kind = DECLARATION_KIND_GLOBAL_VARIABLE;
4030 entity->variable.v.entity = irentity;
4031 set_entity_ld_ident(irentity, create_ld_ident(irentity, entity));
4032 set_entity_variability(irentity, variability_uninitialized);
4033 set_entity_visibility(irentity, visibility_local);
4034 set_entity_allocation(irentity, allocation_static);
4036 ir_graph *const old_current_ir_graph = current_ir_graph;
4037 current_ir_graph = get_const_code_irg();
4039 create_variable_initializer(entity);
4041 assert(current_ir_graph == get_const_code_irg());
4042 current_ir_graph = old_current_ir_graph;
4047 static void return_statement_to_firm(return_statement_t *statement)
4049 if (get_cur_block() == NULL)
4052 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4053 type_t *type = current_function_entity->declaration.type;
4054 ir_type *func_irtype = get_ir_type(type);
4059 if (get_method_n_ress(func_irtype) > 0) {
4060 ir_type *res_type = get_method_res_type(func_irtype, 0);
4062 if (statement->value != NULL) {
4063 ir_node *node = expression_to_firm(statement->value);
4064 node = do_strict_conv(dbgi, node);
4068 if (is_compound_type(res_type)) {
4071 mode = get_type_mode(res_type);
4073 in[0] = new_Unknown(mode);
4077 /* build return_value for its side effects */
4078 if (statement->value != NULL) {
4079 expression_to_firm(statement->value);
4084 ir_node *store = get_store();
4085 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
4087 ir_node *end_block = get_irg_end_block(current_ir_graph);
4088 add_immBlock_pred(end_block, ret);
4090 set_cur_block(NULL);
4093 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
4095 if (get_cur_block() == NULL)
4098 return expression_to_firm(statement->expression);
4101 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
4103 entity_t *entity = compound->scope.entities;
4104 for ( ; entity != NULL; entity = entity->base.next) {
4105 if (!is_declaration(entity))
4108 create_local_declaration(entity);
4111 ir_node *result = NULL;
4112 statement_t *statement = compound->statements;
4113 for ( ; statement != NULL; statement = statement->base.next) {
4114 if (statement->base.next == NULL
4115 && statement->kind == STATEMENT_EXPRESSION) {
4116 result = expression_statement_to_firm(
4117 &statement->expression);
4120 statement_to_firm(statement);
4126 static void create_global_variable(entity_t *entity)
4128 assert(entity->kind == ENTITY_VARIABLE);
4132 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4133 case STORAGE_CLASS_STATIC:
4134 vis = visibility_local;
4137 case STORAGE_CLASS_EXTERN:
4138 vis = visibility_external_allocated;
4141 case STORAGE_CLASS_NONE:
4142 vis = visibility_external_visible;
4145 case STORAGE_CLASS_THREAD:
4146 vis = visibility_external_visible;
4149 case STORAGE_CLASS_THREAD_EXTERN:
4150 vis = visibility_external_allocated;
4153 case STORAGE_CLASS_THREAD_STATIC:
4154 vis = visibility_local;
4158 var_type = get_tls_type();
4162 var_type = get_glob_type();
4166 create_variable_entity(entity,
4167 DECLARATION_KIND_GLOBAL_VARIABLE,
4169 /* Matze: I'm confused, shouldn't we only be here when creating
4172 if (!is_type_function(skip_typeref(entity->declaration.type))) {
4173 set_entity_visibility(declaration->v.entity, vis);
4176 set_entity_visibility(entity->variable.v.entity, vis);
4181 case STORAGE_CLASS_TYPEDEF:
4182 case STORAGE_CLASS_AUTO:
4183 case STORAGE_CLASS_REGISTER:
4186 panic("Invalid storage class for global variable");
4189 static void create_local_declaration(entity_t *entity)
4191 assert(is_declaration(entity));
4193 /* construct type */
4194 (void) get_ir_type(entity->declaration.type);
4195 if (entity->base.symbol == NULL) {
4199 switch ((storage_class_tag_t) entity->declaration.storage_class) {
4200 case STORAGE_CLASS_STATIC:
4201 create_local_static_variable(entity);
4203 case STORAGE_CLASS_EXTERN:
4204 if (entity->kind == ENTITY_FUNCTION) {
4205 assert(entity->function.statement == NULL);
4206 get_function_entity(entity);
4208 create_global_variable(entity);
4209 create_variable_initializer(entity);
4212 case STORAGE_CLASS_NONE:
4213 case STORAGE_CLASS_AUTO:
4214 case STORAGE_CLASS_REGISTER:
4215 if (entity->kind == ENTITY_FUNCTION) {
4216 if (entity->function.statement != NULL) {
4217 get_function_entity(entity);
4218 entity->declaration.kind = DECLARATION_KIND_INNER_FUNCTION;
4219 enqueue_inner_function(entity);
4221 get_function_entity(entity);
4224 create_local_variable(entity);
4227 case STORAGE_CLASS_TYPEDEF:
4228 case STORAGE_CLASS_THREAD:
4229 case STORAGE_CLASS_THREAD_EXTERN:
4230 case STORAGE_CLASS_THREAD_STATIC:
4233 panic("invalid storage class found");
4236 static void initialize_local_declaration(entity_t *entity)
4238 if (entity->base.symbol == NULL)
4241 switch ((declaration_kind_t) entity->declaration.kind) {
4242 case DECLARATION_KIND_LOCAL_VARIABLE:
4243 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
4244 create_variable_initializer(entity);
4247 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
4248 allocate_variable_length_array(entity);
4251 case DECLARATION_KIND_COMPOUND_MEMBER:
4252 case DECLARATION_KIND_GLOBAL_VARIABLE:
4253 case DECLARATION_KIND_FUNCTION:
4254 case DECLARATION_KIND_INNER_FUNCTION:
4257 case DECLARATION_KIND_UNKNOWN:
4258 panic("can't initialize unknown declaration");
4260 panic("invalid declaration kind");
4263 static void declaration_statement_to_firm(declaration_statement_t *statement)
4265 entity_t *entity = statement->declarations_begin;
4266 entity_t *end = statement->declarations_end->base.next;
4267 for ( ; entity != end; entity = entity->base.next) {
4268 if (!is_declaration(entity))
4270 initialize_local_declaration(entity);
4274 static void if_statement_to_firm(if_statement_t *statement)
4276 ir_node *cur_block = get_cur_block();
4278 ir_node *fallthrough_block = NULL;
4280 /* the true (blocks) */
4281 ir_node *true_block = NULL;
4282 if (statement->true_statement != NULL) {
4283 true_block = new_immBlock();
4284 statement_to_firm(statement->true_statement);
4285 if (get_cur_block() != NULL) {
4286 ir_node *jmp = new_Jmp();
4287 if (fallthrough_block == NULL)
4288 fallthrough_block = new_immBlock();
4289 add_immBlock_pred(fallthrough_block, jmp);
4293 /* the false (blocks) */
4294 ir_node *false_block = NULL;
4295 if (statement->false_statement != NULL) {
4296 false_block = new_immBlock();
4298 statement_to_firm(statement->false_statement);
4299 if (get_cur_block() != NULL) {
4300 ir_node *jmp = new_Jmp();
4301 if (fallthrough_block == NULL)
4302 fallthrough_block = new_immBlock();
4303 add_immBlock_pred(fallthrough_block, jmp);
4307 /* create the condition */
4308 if (cur_block != NULL) {
4309 if (true_block == NULL || false_block == NULL) {
4310 if (fallthrough_block == NULL)
4311 fallthrough_block = new_immBlock();
4312 if (true_block == NULL)
4313 true_block = fallthrough_block;
4314 if (false_block == NULL)
4315 false_block = fallthrough_block;
4318 set_cur_block(cur_block);
4319 create_condition_evaluation(statement->condition, true_block,
4323 mature_immBlock(true_block);
4324 if (false_block != fallthrough_block && false_block != NULL) {
4325 mature_immBlock(false_block);
4327 if (fallthrough_block != NULL) {
4328 mature_immBlock(fallthrough_block);
4331 set_cur_block(fallthrough_block);
4334 static void while_statement_to_firm(while_statement_t *statement)
4336 ir_node *jmp = NULL;
4337 if (get_cur_block() != NULL) {
4341 /* create the header block */
4342 ir_node *header_block = new_immBlock();
4344 add_immBlock_pred(header_block, jmp);
4348 ir_node *old_continue_label = continue_label;
4349 ir_node *old_break_label = break_label;
4350 continue_label = header_block;
4353 ir_node *body_block = new_immBlock();
4354 statement_to_firm(statement->body);
4355 ir_node *false_block = break_label;
4357 assert(continue_label == header_block);
4358 continue_label = old_continue_label;
4359 break_label = old_break_label;
4361 if (get_cur_block() != NULL) {
4363 add_immBlock_pred(header_block, jmp);
4366 /* shortcut for while(true) */
4367 if (is_constant_expression(statement->condition)
4368 && fold_constant(statement->condition) != 0) {
4369 set_cur_block(header_block);
4370 ir_node *header_jmp = new_Jmp();
4371 add_immBlock_pred(body_block, header_jmp);
4373 keep_alive(body_block);
4374 keep_all_memory(body_block);
4375 set_cur_block(body_block);
4377 if (false_block == NULL) {
4378 false_block = new_immBlock();
4381 /* create the condition */
4382 set_cur_block(header_block);
4384 create_condition_evaluation(statement->condition, body_block,
4388 mature_immBlock(body_block);
4389 mature_immBlock(header_block);
4390 if (false_block != NULL) {
4391 mature_immBlock(false_block);
4394 set_cur_block(false_block);
4397 static void do_while_statement_to_firm(do_while_statement_t *statement)
4399 ir_node *jmp = NULL;
4400 if (get_cur_block() != NULL) {
4404 /* create the header block */
4405 ir_node *header_block = new_immBlock();
4408 ir_node *body_block = new_immBlock();
4410 add_immBlock_pred(body_block, jmp);
4413 ir_node *old_continue_label = continue_label;
4414 ir_node *old_break_label = break_label;
4415 continue_label = header_block;
4418 statement_to_firm(statement->body);
4419 ir_node *false_block = break_label;
4421 assert(continue_label == header_block);
4422 continue_label = old_continue_label;
4423 break_label = old_break_label;
4425 if (get_cur_block() != NULL) {
4426 ir_node *body_jmp = new_Jmp();
4427 add_immBlock_pred(header_block, body_jmp);
4428 mature_immBlock(header_block);
4431 if (false_block == NULL) {
4432 false_block = new_immBlock();
4435 /* create the condition */
4436 set_cur_block(header_block);
4438 create_condition_evaluation(statement->condition, body_block, false_block);
4439 mature_immBlock(body_block);
4440 mature_immBlock(header_block);
4441 if (false_block != NULL) {
4442 mature_immBlock(false_block);
4445 set_cur_block(false_block);
4448 static void for_statement_to_firm(for_statement_t *statement)
4450 ir_node *jmp = NULL;
4452 /* create declarations */
4453 entity_t *entity = statement->scope.entities;
4454 for ( ; entity != NULL; entity = entity->base.next) {
4455 if (!is_declaration(entity))
4458 create_local_declaration(entity);
4461 if (get_cur_block() != NULL) {
4462 entity = statement->scope.entities;
4463 for ( ; entity != NULL; entity = entity->base.next) {
4464 if (!is_declaration(entity))
4467 initialize_local_declaration(entity);
4470 if (statement->initialisation != NULL) {
4471 expression_to_firm(statement->initialisation);
4478 /* create the step block */
4479 ir_node *const step_block = new_immBlock();
4480 if (statement->step != NULL) {
4481 expression_to_firm(statement->step);
4483 ir_node *const step_jmp = new_Jmp();
4485 /* create the header block */
4486 ir_node *const header_block = new_immBlock();
4488 add_immBlock_pred(header_block, jmp);
4490 add_immBlock_pred(header_block, step_jmp);
4492 /* the false block */
4493 ir_node *const false_block = new_immBlock();
4496 ir_node * body_block;
4497 if (statement->body != NULL) {
4498 ir_node *const old_continue_label = continue_label;
4499 ir_node *const old_break_label = break_label;
4500 continue_label = step_block;
4501 break_label = false_block;
4503 body_block = new_immBlock();
4504 statement_to_firm(statement->body);
4506 assert(continue_label == step_block);
4507 assert(break_label == false_block);
4508 continue_label = old_continue_label;
4509 break_label = old_break_label;
4511 if (get_cur_block() != NULL) {
4513 add_immBlock_pred(step_block, jmp);
4516 body_block = step_block;
4519 /* create the condition */
4520 set_cur_block(header_block);
4521 if (statement->condition != NULL) {
4522 create_condition_evaluation(statement->condition, body_block,
4525 keep_alive(header_block);
4526 keep_all_memory(header_block);
4528 add_immBlock_pred(body_block, jmp);
4531 mature_immBlock(body_block);
4532 mature_immBlock(false_block);
4533 mature_immBlock(step_block);
4534 mature_immBlock(header_block);
4535 mature_immBlock(false_block);
4537 set_cur_block(false_block);
4540 static void create_jump_statement(const statement_t *statement,
4541 ir_node *target_block)
4543 if (get_cur_block() == NULL)
4546 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4547 ir_node *jump = new_d_Jmp(dbgi);
4548 add_immBlock_pred(target_block, jump);
4550 set_cur_block(NULL);
4553 static ir_node *get_break_label(void)
4555 if (break_label == NULL) {
4556 ir_node *cur_block = get_cur_block();
4557 break_label = new_immBlock();
4558 set_cur_block(cur_block);
4563 static void switch_statement_to_firm(switch_statement_t *statement)
4565 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4567 ir_node *expression = expression_to_firm(statement->expression);
4568 ir_node *cond = new_d_Cond(dbgi, expression);
4570 set_cur_block(NULL);
4572 ir_node *const old_switch_cond = current_switch_cond;
4573 ir_node *const old_break_label = break_label;
4574 const bool old_saw_default_label = saw_default_label;
4575 saw_default_label = false;
4576 current_switch_cond = cond;
4578 switch_statement_t *const old_switch = current_switch;
4579 current_switch = statement;
4581 /* determine a free number for the default label */
4582 unsigned long num_cases = 0;
4584 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4585 if (l->expression == NULL) {
4589 if (l->last_case >= l->first_case)
4590 num_cases += l->last_case - l->first_case + 1;
4591 if (l->last_case > def_nr)
4592 def_nr = l->last_case;
4595 if (def_nr == INT_MAX) {
4596 /* Bad: an overflow will occurr, we cannot be sure that the
4597 * maximum + 1 is a free number. Scan the values a second
4598 * time to find a free number.
4600 unsigned char *bits = xmalloc((num_cases + 7) >> 3);
4602 memset(bits, 0, (num_cases + 7) >> 3);
4603 for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
4604 if (l->expression == NULL) {
4608 unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
4609 if (start < num_cases && l->last_case >= 0) {
4610 unsigned long end = (unsigned long)l->last_case < num_cases ?
4611 (unsigned long)l->last_case : num_cases - 1;
4612 for (unsigned long cns = start; cns <= end; ++cns) {
4613 bits[cns >> 3] |= (1 << (cns & 7));
4617 /* We look at the first num_cases constants:
4618 * Either they are densed, so we took the last (num_cases)
4619 * one, or they are non densed, so we will find one free
4623 for (i = 0; i < num_cases; ++i)
4624 if ((bits[i >> 3] & (1 << (i & 7))) == 0)
4632 statement->default_proj_nr = def_nr;
4634 if (statement->body != NULL) {
4635 statement_to_firm(statement->body);
4638 if (get_cur_block() != NULL) {
4639 ir_node *jmp = new_Jmp();
4640 add_immBlock_pred(get_break_label(), jmp);
4643 if (!saw_default_label) {
4644 set_cur_block(get_nodes_block(cond));
4645 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4646 statement->default_proj_nr);
4647 add_immBlock_pred(get_break_label(), proj);
4650 if (break_label != NULL) {
4651 mature_immBlock(break_label);
4653 set_cur_block(break_label);
4655 assert(current_switch_cond == cond);
4656 current_switch = old_switch;
4657 current_switch_cond = old_switch_cond;
4658 break_label = old_break_label;
4659 saw_default_label = old_saw_default_label;
4662 static void case_label_to_firm(const case_label_statement_t *statement)
4664 if (statement->is_empty_range)
4667 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4669 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4672 ir_node *old_block = get_nodes_block(current_switch_cond);
4673 ir_node *block = new_immBlock();
4675 set_cur_block(old_block);
4676 if (statement->expression != NULL) {
4677 long pn = statement->first_case;
4678 long end_pn = statement->last_case;
4679 assert(pn <= end_pn);
4680 /* create jumps for all cases in the given range */
4682 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4683 add_immBlock_pred(block, proj);
4684 } while(pn++ < end_pn);
4686 saw_default_label = true;
4687 proj = new_d_defaultProj(dbgi, current_switch_cond,
4688 current_switch->default_proj_nr);
4690 add_immBlock_pred(block, proj);
4693 if (fallthrough != NULL) {
4694 add_immBlock_pred(block, fallthrough);
4696 mature_immBlock(block);
4697 set_cur_block(block);
4699 if (statement->statement != NULL) {
4700 statement_to_firm(statement->statement);
4704 static void label_to_firm(const label_statement_t *statement)
4706 ir_node *block = get_label_block(statement->label);
4708 if (get_cur_block() != NULL) {
4709 ir_node *jmp = new_Jmp();
4710 add_immBlock_pred(block, jmp);
4713 set_cur_block(block);
4715 keep_all_memory(block);
4717 if (statement->statement != NULL) {
4718 statement_to_firm(statement->statement);
4722 static void goto_to_firm(const goto_statement_t *statement)
4724 if (get_cur_block() == NULL)
4727 if (statement->expression) {
4728 ir_node *irn = expression_to_firm(statement->expression);
4729 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4730 ir_node *ijmp = new_d_IJmp(dbgi, irn);
4732 set_irn_link(ijmp, ijmp_list);
4735 ir_node *block = get_label_block(statement->label);
4736 ir_node *jmp = new_Jmp();
4737 add_immBlock_pred(block, jmp);
4739 set_cur_block(NULL);
4742 static void asm_statement_to_firm(const asm_statement_t *statement)
4744 bool needs_memory = false;
4746 if (statement->is_volatile) {
4747 needs_memory = true;
4750 size_t n_clobbers = 0;
4751 asm_clobber_t *clobber = statement->clobbers;
4752 for ( ; clobber != NULL; clobber = clobber->next) {
4753 const char *clobber_str = clobber->clobber.begin;
4755 if (!be_is_valid_clobber(clobber_str)) {
4756 errorf(&statement->base.source_position,
4757 "invalid clobber '%s' specified", clobber->clobber);
4761 if (strcmp(clobber_str, "memory") == 0) {
4762 needs_memory = true;
4766 ident *id = new_id_from_str(clobber_str);
4767 obstack_ptr_grow(&asm_obst, id);
4770 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4771 ident **clobbers = NULL;
4772 if (n_clobbers > 0) {
4773 clobbers = obstack_finish(&asm_obst);
4776 size_t n_inputs = 0;
4777 asm_argument_t *argument = statement->inputs;
4778 for ( ; argument != NULL; argument = argument->next)
4780 size_t n_outputs = 0;
4781 argument = statement->outputs;
4782 for ( ; argument != NULL; argument = argument->next)
4785 unsigned next_pos = 0;
4787 ir_node *ins[n_inputs + n_outputs + 1];
4790 ir_asm_constraint tmp_in_constraints[n_outputs];
4792 const expression_t *out_exprs[n_outputs];
4793 ir_node *out_addrs[n_outputs];
4794 size_t out_size = 0;
4796 argument = statement->outputs;
4797 for ( ; argument != NULL; argument = argument->next) {
4798 const char *constraints = argument->constraints.begin;
4799 asm_constraint_flags_t asm_flags
4800 = be_parse_asm_constraints(constraints);
4802 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4803 errorf(&statement->base.source_position,
4804 "some constraints in '%s' are not supported", constraints);
4807 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4808 errorf(&statement->base.source_position,
4809 "some constraints in '%s' are invalid", constraints);
4812 if (! (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE)) {
4813 errorf(&statement->base.source_position,
4814 "no write flag specified for output constraints '%s'",
4819 unsigned pos = next_pos++;
4820 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4821 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4822 expression_t *expr = argument->expression;
4823 ir_node *addr = expression_to_addr(expr);
4824 /* in+output, construct an artifical same_as constraint on the
4826 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ) {
4828 ir_node *value = get_value_from_lvalue(expr, addr);
4830 snprintf(buf, sizeof(buf), "%u", pos);
4832 ir_asm_constraint constraint;
4833 constraint.pos = pos;
4834 constraint.constraint = new_id_from_str(buf);
4835 constraint.mode = get_ir_mode(expr->base.type);
4836 tmp_in_constraints[in_size] = constraint;
4837 ins[in_size] = value;
4842 out_exprs[out_size] = expr;
4843 out_addrs[out_size] = addr;
4845 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4846 /* pure memory ops need no input (but we have to make sure we
4847 * attach to the memory) */
4848 assert(! (asm_flags &
4849 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4850 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4851 needs_memory = true;
4853 /* we need to attach the address to the inputs */
4854 expression_t *expr = argument->expression;
4856 ir_asm_constraint constraint;
4857 constraint.pos = pos;
4858 constraint.constraint = new_id_from_str(constraints);
4859 constraint.mode = NULL;
4860 tmp_in_constraints[in_size] = constraint;
4862 ins[in_size] = expression_to_addr(expr);
4866 errorf(&statement->base.source_position,
4867 "only modifiers but no place set in constraints '%s'",
4872 ir_asm_constraint constraint;
4873 constraint.pos = pos;
4874 constraint.constraint = new_id_from_str(constraints);
4875 constraint.mode = get_ir_mode(argument->expression->base.type);
4877 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4879 assert(obstack_object_size(&asm_obst)
4880 == out_size * sizeof(ir_asm_constraint));
4881 ir_asm_constraint *output_constraints = obstack_finish(&asm_obst);
4884 obstack_grow(&asm_obst, tmp_in_constraints,
4885 in_size * sizeof(tmp_in_constraints[0]));
4886 /* find and count input and output arguments */
4887 argument = statement->inputs;
4888 for ( ; argument != NULL; argument = argument->next) {
4889 const char *constraints = argument->constraints.begin;
4890 asm_constraint_flags_t asm_flags
4891 = be_parse_asm_constraints(constraints);
4893 if (asm_flags & ASM_CONSTRAINT_FLAG_NO_SUPPORT) {
4894 errorf(&statement->base.source_position,
4895 "some constraints in '%s' are not supported", constraints);
4898 if (asm_flags & ASM_CONSTRAINT_FLAG_INVALID) {
4899 errorf(&statement->base.source_position,
4900 "some constraints in '%s' are invalid", constraints);
4903 if (asm_flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE) {
4904 errorf(&statement->base.source_position,
4905 "write flag specified for input constraints '%s'",
4911 if ( (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE)
4912 || (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER) ) {
4913 /* we can treat this as "normal" input */
4914 input = expression_to_firm(argument->expression);
4915 } else if (asm_flags & ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP) {
4916 /* pure memory ops need no input (but we have to make sure we
4917 * attach to the memory) */
4918 assert(! (asm_flags &
4919 (ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE
4920 | ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER)));
4921 needs_memory = true;
4922 input = expression_to_addr(argument->expression);
4924 errorf(&statement->base.source_position,
4925 "only modifiers but no place set in constraints '%s'",
4930 ir_asm_constraint constraint;
4931 constraint.pos = next_pos++;
4932 constraint.constraint = new_id_from_str(constraints);
4933 constraint.mode = get_irn_mode(input);
4935 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4936 ins[in_size++] = input;
4940 ir_asm_constraint constraint;
4941 constraint.pos = next_pos++;
4942 constraint.constraint = new_id_from_str("");
4943 constraint.mode = mode_M;
4945 obstack_grow(&asm_obst, &constraint, sizeof(constraint));
4946 ins[in_size++] = get_store();
4949 assert(obstack_object_size(&asm_obst)
4950 == in_size * sizeof(ir_asm_constraint));
4951 ir_asm_constraint *input_constraints = obstack_finish(&asm_obst);
4953 /* create asm node */
4954 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4956 ident *asm_text = new_id_from_str(statement->asm_text.begin);
4958 ir_node *node = new_d_ASM(dbgi, in_size, ins, input_constraints,
4959 out_size, output_constraints,
4960 n_clobbers, clobbers, asm_text);
4962 if (statement->is_volatile) {
4963 set_irn_pinned(node, op_pin_state_pinned);
4965 set_irn_pinned(node, op_pin_state_floats);
4968 /* create output projs & connect them */
4970 ir_node *projm = new_Proj(node, mode_M, out_size+1);
4975 for (i = 0; i < out_size; ++i) {
4976 const expression_t *out_expr = out_exprs[i];
4978 ir_mode *mode = get_ir_mode(out_expr->base.type);
4979 ir_node *proj = new_Proj(node, mode, pn);
4980 ir_node *addr = out_addrs[i];
4982 set_value_for_expression_addr(out_expr, proj, addr);
4986 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4987 statement_to_firm(statement->try_statement);
4988 warningf(&statement->base.source_position, "structured exception handling ignored");
4991 static void leave_statement_to_firm(leave_statement_t *statement) {
4992 errorf(&statement->base.source_position, "__leave not supported yet");
4996 * Transform a statement.
4998 static void statement_to_firm(statement_t *statement)
5001 assert(!statement->base.transformed);
5002 statement->base.transformed = true;
5005 switch (statement->kind) {
5006 case STATEMENT_INVALID:
5007 panic("invalid statement found");
5009 case STATEMENT_EMPTY:
5012 case STATEMENT_COMPOUND:
5013 compound_statement_to_firm(&statement->compound);
5015 case STATEMENT_RETURN:
5016 return_statement_to_firm(&statement->returns);
5018 case STATEMENT_EXPRESSION:
5019 expression_statement_to_firm(&statement->expression);
5022 if_statement_to_firm(&statement->ifs);
5024 case STATEMENT_WHILE:
5025 while_statement_to_firm(&statement->whiles);
5027 case STATEMENT_DO_WHILE:
5028 do_while_statement_to_firm(&statement->do_while);
5030 case STATEMENT_DECLARATION:
5031 declaration_statement_to_firm(&statement->declaration);
5033 case STATEMENT_BREAK:
5034 create_jump_statement(statement, get_break_label());
5036 case STATEMENT_CONTINUE:
5037 create_jump_statement(statement, continue_label);
5039 case STATEMENT_SWITCH:
5040 switch_statement_to_firm(&statement->switchs);
5042 case STATEMENT_CASE_LABEL:
5043 case_label_to_firm(&statement->case_label);
5046 for_statement_to_firm(&statement->fors);
5048 case STATEMENT_LABEL:
5049 label_to_firm(&statement->label);
5051 case STATEMENT_LOCAL_LABEL:
5052 /* local labels transform the semantics of labels while parsing
5053 * they don't need any special treatment here */
5055 case STATEMENT_GOTO:
5056 goto_to_firm(&statement->gotos);
5059 asm_statement_to_firm(&statement->asms);
5061 case STATEMENT_MS_TRY:
5062 ms_try_statement_to_firm(&statement->ms_try);
5064 case STATEMENT_LEAVE:
5065 leave_statement_to_firm(&statement->leave);
5068 panic("Statement not implemented\n");
5071 static int count_local_variables(const entity_t *entity,
5072 const entity_t *const end)
5075 for (; entity != end; entity = entity->base.next) {
5076 if (entity->kind != ENTITY_VARIABLE)
5078 type_t *type = skip_typeref(entity->declaration.type);
5080 if (!entity->variable.address_taken && is_type_scalar(type))
5086 static void count_local_variables_in_stmt(statement_t *stmt, void *const env)
5088 int *const count = env;
5090 switch (stmt->kind) {
5091 case STATEMENT_DECLARATION: {
5092 const declaration_statement_t *const decl_stmt = &stmt->declaration;
5093 *count += count_local_variables(decl_stmt->declarations_begin,
5094 decl_stmt->declarations_end->base.next);
5099 *count += count_local_variables(stmt->fors.scope.entities, NULL);
5107 static int get_function_n_local_vars(entity_t *entity)
5111 /* count parameters */
5112 count += count_local_variables(entity->function.parameters.entities, NULL);
5114 /* count local variables declared in body */
5115 walk_statements(entity->function.statement, count_local_variables_in_stmt,
5120 static void initialize_function_parameters(entity_t *entity)
5122 assert(entity->kind == ENTITY_FUNCTION);
5123 ir_graph *irg = current_ir_graph;
5124 ir_node *args = get_irg_args(irg);
5125 ir_node *start_block = get_irg_start_block(irg);
5126 ir_type *function_irtype = get_ir_type(entity->declaration.type);
5129 entity_t *parameter = entity->function.parameters.entities;
5130 for ( ; parameter != NULL; parameter = parameter->base.next, ++n) {
5131 assert(parameter->kind == ENTITY_VARIABLE);
5132 assert(parameter->declaration.kind == DECLARATION_KIND_UNKNOWN);
5133 type_t *type = skip_typeref(parameter->declaration.type);
5135 bool needs_entity = parameter->variable.address_taken;
5136 assert(!is_type_array(type));
5137 if (is_type_compound(type)) {
5138 needs_entity = true;
5142 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
5143 ident *id = new_id_from_str(parameter->base.symbol->string);
5144 set_entity_ident(entity, id);
5146 parameter->declaration.kind
5147 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
5148 parameter->variable.v.entity = entity;
5152 ir_type *param_irtype = get_method_param_type(function_irtype, n);
5153 ir_mode *param_mode = get_type_mode(param_irtype);
5156 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
5158 ir_mode *mode = get_ir_mode(type);
5159 value = create_conv(NULL, value, mode);
5160 value = do_strict_conv(NULL, value);
5162 parameter->declaration.kind = DECLARATION_KIND_LOCAL_VARIABLE;
5163 parameter->variable.v.value_number = next_value_number_function;
5164 set_irg_loc_description(current_ir_graph, next_value_number_function,
5165 (variable_t*) ¶meter->variable);
5166 ++next_value_number_function;
5168 set_value(parameter->variable.v.value_number, value);
5173 * Handle additional decl modifiers for IR-graphs
5175 * @param irg the IR-graph
5176 * @param dec_modifiers additional modifiers
5178 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
5180 if (decl_modifiers & DM_NORETURN) {
5181 /* TRUE if the declaration includes the Microsoft
5182 __declspec(noreturn) specifier. */
5183 set_irg_additional_property(irg, mtp_property_noreturn);
5185 if (decl_modifiers & DM_NOTHROW) {
5186 /* TRUE if the declaration includes the Microsoft
5187 __declspec(nothrow) specifier. */
5188 set_irg_additional_property(irg, mtp_property_nothrow);
5190 if (decl_modifiers & DM_NAKED) {
5191 /* TRUE if the declaration includes the Microsoft
5192 __declspec(naked) specifier. */
5193 set_irg_additional_property(irg, mtp_property_naked);
5195 if (decl_modifiers & DM_FORCEINLINE) {
5196 /* TRUE if the declaration includes the
5197 Microsoft __forceinline specifier. */
5198 set_irg_inline_property(irg, irg_inline_forced);
5200 if (decl_modifiers & DM_NOINLINE) {
5201 /* TRUE if the declaration includes the Microsoft
5202 __declspec(noinline) specifier. */
5203 set_irg_inline_property(irg, irg_inline_forbidden);
5207 static void add_function_pointer(ir_type *segment, ir_entity *method,
5208 const char *unique_template)
5210 ir_type *method_type = get_entity_type(method);
5211 ident *id = id_unique(unique_template);
5212 ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
5214 ident *ide = id_unique(unique_template);
5215 ir_entity *ptr = new_entity(segment, ide, ptr_type);
5216 ir_graph *irg = get_const_code_irg();
5217 ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
5220 set_entity_compiler_generated(ptr, 1);
5221 set_entity_variability(ptr, variability_constant);
5222 set_atomic_ent_value(ptr, val);
5226 * Generate possible IJmp branches to a given label block.
5228 static void gen_ijmp_branches(ir_node *block) {
5230 for (ijmp = ijmp_list; ijmp != NULL; ijmp = get_irn_link(ijmp)) {
5231 add_immBlock_pred(block, ijmp);
5236 * Create code for a function.
5238 static void create_function(entity_t *entity)
5240 assert(entity->kind == ENTITY_FUNCTION);
5241 ir_entity *function_entity = get_function_entity(entity);
5243 if (entity->function.statement == NULL)
5246 if (entity->declaration.modifiers & DM_CONSTRUCTOR) {
5247 ir_type *segment = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
5248 add_function_pointer(segment, function_entity, "constructor_ptr.%u");
5250 if (entity->declaration.modifiers & DM_DESTRUCTOR) {
5251 ir_type *segment = get_segment_type(IR_SEGMENT_DESTRUCTORS);
5252 add_function_pointer(segment, function_entity, "destructor_ptr.%u");
5255 current_function_entity = entity;
5256 current_function_name = NULL;
5257 current_funcsig = NULL;
5259 assert(all_labels == NULL);
5260 all_labels = NEW_ARR_F(label_t *, 0);
5263 int n_local_vars = get_function_n_local_vars(entity);
5264 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
5266 ir_graph *old_current_function = current_function;
5267 current_function = irg;
5269 set_irg_fp_model(irg, firm_opt.fp_model);
5270 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
5271 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
5273 ir_node *first_block = get_cur_block();
5275 /* set inline flags */
5276 if (entity->function.is_inline)
5277 set_irg_inline_property(irg, irg_inline_recomended);
5278 handle_decl_modifier_irg(irg, entity->declaration.modifiers);
5280 next_value_number_function = 0;
5281 initialize_function_parameters(entity);
5283 statement_to_firm(entity->function.statement);
5285 ir_node *end_block = get_irg_end_block(irg);
5287 /* do we have a return statement yet? */
5288 if (get_cur_block() != NULL) {
5289 type_t *type = skip_typeref(entity->declaration.type);
5290 assert(is_type_function(type));
5291 const function_type_t *func_type = &type->function;
5292 const type_t *return_type
5293 = skip_typeref(func_type->return_type);
5296 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
5297 ret = new_Return(get_store(), 0, NULL);
5300 if (is_type_scalar(return_type)) {
5301 mode = get_ir_mode(func_type->return_type);
5307 /* ยง5.1.2.2.3 main implicitly returns 0 */
5308 if (strcmp(entity->base.symbol->string, "main") == 0) {
5309 in[0] = new_Const(mode, get_mode_null(mode));
5311 in[0] = new_Unknown(mode);
5313 ret = new_Return(get_store(), 1, in);
5315 add_immBlock_pred(end_block, ret);
5318 bool has_computed_gotos = false;
5319 for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
5320 label_t *label = all_labels[i];
5321 if (label->address_taken) {
5322 gen_ijmp_branches(label->block);
5323 has_computed_gotos = true;
5325 mature_immBlock(label->block);
5327 if (has_computed_gotos) {
5328 /* if we have computed goto's in the function, we cannot inline it */
5329 if (get_irg_inline_property(irg) >= irg_inline_recomended) {
5330 warningf(&entity->base.source_position,
5331 "function '%Y' can never be inlined because it contains a computed goto",
5332 entity->base.symbol);
5334 set_irg_inline_property(irg, irg_inline_forbidden);
5337 DEL_ARR_F(all_labels);
5340 mature_immBlock(first_block);
5341 mature_immBlock(end_block);
5343 irg_finalize_cons(irg);
5345 /* finalize the frame type */
5346 ir_type *frame_type = get_irg_frame_type(irg);
5347 int n = get_compound_n_members(frame_type);
5350 for (int i = 0; i < n; ++i) {
5351 ir_entity *entity = get_compound_member(frame_type, i);
5352 ir_type *entity_type = get_entity_type(entity);
5354 int align = get_type_alignment_bytes(entity_type);
5355 if (align > align_all)
5359 misalign = offset % align;
5361 offset += align - misalign;
5365 set_entity_offset(entity, offset);
5366 offset += get_type_size_bytes(entity_type);
5368 set_type_size_bytes(frame_type, offset);
5369 set_type_alignment_bytes(frame_type, align_all);
5372 current_function = old_current_function;
5374 /* create inner functions */
5376 for (inner = next_inner_function(); inner != NULL;
5377 inner = next_inner_function()) {
5378 create_function(inner);
5382 static void scope_to_firm(scope_t *scope)
5384 /* first pass: create declarations */
5385 entity_t *entity = scope->entities;
5386 for ( ; entity != NULL; entity = entity->base.next) {
5387 if (entity->base.symbol == NULL)
5390 if (entity->kind == ENTITY_FUNCTION) {
5391 get_function_entity(entity);
5392 } else if (entity->kind == ENTITY_VARIABLE) {
5393 create_global_variable(entity);
5397 /* second pass: create code/initializers */
5398 entity = scope->entities;
5399 for ( ; entity != NULL; entity = entity->base.next) {
5400 if (entity->base.symbol == NULL)
5403 if (entity->kind == ENTITY_FUNCTION) {
5404 create_function(entity);
5405 } else if (entity->kind == ENTITY_VARIABLE) {
5406 assert(entity->declaration.kind
5407 == DECLARATION_KIND_GLOBAL_VARIABLE);
5408 current_ir_graph = get_const_code_irg();
5409 create_variable_initializer(entity);
5414 void init_ast2firm(void)
5416 obstack_init(&asm_obst);
5417 init_atomic_modes();
5419 id_underscore = new_id_from_chars("_", 1);
5420 id_imp = new_id_from_chars("__imp_", 6);
5422 /* OS option must be set to the backend */
5423 switch (firm_opt.os_support) {
5424 case OS_SUPPORT_MINGW:
5425 create_ld_ident = create_ld_ident_win32;
5426 case OS_SUPPORT_LINUX:
5427 create_ld_ident = create_ld_ident_linux_elf;
5429 case OS_SUPPORT_MACHO:
5430 create_ld_ident = create_ld_ident_macho;
5434 /* create idents for all known runtime functions */
5435 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5436 rts_idents[i] = new_id_from_str(rts_data[i].name);
5439 entitymap_init(&entitymap);
5442 static void init_ir_types(void)
5444 static int ir_types_initialized = 0;
5445 if (ir_types_initialized)
5447 ir_types_initialized = 1;
5449 ir_type_int = get_ir_type(type_int);
5450 ir_type_const_char = get_ir_type(type_const_char);
5451 ir_type_wchar_t = get_ir_type(type_wchar_t);
5452 ir_type_void = get_ir_type(type_void);
5455 void exit_ast2firm(void)
5457 entitymap_destroy(&entitymap);
5458 obstack_free(&asm_obst, NULL);
5461 static void global_asm_to_firm(statement_t *s)
5463 for (; s != NULL; s = s->base.next) {
5464 assert(s->kind == STATEMENT_ASM);
5466 char const *const text = s->asms.asm_text.begin;
5467 size_t size = s->asms.asm_text.size;
5469 /* skip the last \0 */
5470 if (text[size - 1] == '\0')
5473 ident *const id = new_id_from_chars(text, size);
5478 void translation_unit_to_firm(translation_unit_t *unit)
5480 /* just to be sure */
5481 continue_label = NULL;
5483 current_switch_cond = NULL;
5486 inner_functions = NEW_ARR_F(entity_t *, 0);
5488 scope_to_firm(&unit->scope);
5489 global_asm_to_firm(unit->global_asm);
5491 DEL_ARR_F(inner_functions);
5492 inner_functions = NULL;
5494 current_ir_graph = NULL;