2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm.h>
27 #include <libfirm/adt/obst.h>
31 #include "adt/error.h"
32 #include "adt/array.h"
38 #include "diagnostic.h"
39 #include "lang_features.h"
41 #include "driver/firm_opt.h"
42 #include "driver/firm_cmdline.h"
44 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
46 /* some idents needed for name mangling */
47 static ident *id_underscore;
50 static ir_type *ir_type_const_char;
51 static ir_type *ir_type_wchar_t;
52 static ir_type *ir_type_void;
53 static ir_type *ir_type_int;
55 static type_t *type_const_char;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static ir_node **imature_blocks;
64 static const declaration_t *current_function_decl;
65 static ir_node *current_function_name;
66 static ir_node *current_funcsig;
68 static struct obstack asm_obst;
70 typedef enum declaration_kind_t {
71 DECLARATION_KIND_UNKNOWN,
72 DECLARATION_KIND_FUNCTION,
73 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
74 DECLARATION_KIND_GLOBAL_VARIABLE,
75 DECLARATION_KIND_LOCAL_VARIABLE,
76 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
77 DECLARATION_KIND_COMPOUND_MEMBER,
78 DECLARATION_KIND_LABEL_BLOCK,
79 DECLARATION_KIND_ENUM_ENTRY,
80 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
81 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
85 static ir_type *get_ir_type(type_t *type);
86 static ir_type *get_ir_type_incomplete(type_t *type);
87 static int count_decls_in_stmts(const statement_t *stmt);
89 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
91 const declaration_t *declaration = get_irg_loc_description(irg, pos);
93 warningf(&declaration->source_position,
94 "variable '%#T' might be used uninitialized",
95 declaration->type, declaration->symbol);
96 return new_r_Unknown(irg, mode);
99 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
101 const source_position_t *pos = (const source_position_t*) dbg;
104 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
108 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
110 const source_position_t *pos = (const source_position_t*) dbg;
115 return pos->input_name;
118 static dbg_info *get_dbg_info(const source_position_t *pos)
120 return (dbg_info*) pos;
123 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
125 static ir_mode *mode_int, *mode_uint;
127 static ir_node *expression_to_firm(const expression_t *expression);
128 static inline ir_mode *get_ir_mode(type_t *type);
129 static void create_local_declaration(declaration_t *declaration);
131 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
133 unsigned flags = get_atomic_type_flags(kind);
134 unsigned size = get_atomic_type_size(kind);
135 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
136 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
139 unsigned bit_size = size * 8;
140 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
141 ir_mode_arithmetic arithmetic;
142 unsigned modulo_shift;
144 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
145 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
146 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
147 sort = irms_int_number;
148 arithmetic = irma_twos_complement;
149 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
151 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
152 snprintf(name, sizeof(name), "f%d", bit_size);
153 sort = irms_float_number;
154 arithmetic = irma_ieee754;
157 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
165 * Initialises the atomic modes depending on the machine size.
167 static void init_atomic_modes(void)
169 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
170 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
172 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
173 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
175 /* there's no real void type in firm */
176 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
178 /* initialize pointer modes */
180 ir_mode_sort sort = irms_reference;
181 unsigned bit_size = machine_size;
183 ir_mode_arithmetic arithmetic = irma_twos_complement;
184 unsigned modulo_shift
185 = bit_size < machine_size ? machine_size : bit_size;
187 snprintf(name, sizeof(name), "p%d", machine_size);
188 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
191 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
192 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
194 /* Hmm, pointers should be machine size */
195 set_modeP_data(ptr_mode);
196 set_modeP_code(ptr_mode);
199 static unsigned get_compound_type_size(compound_type_t *type)
201 ir_type *irtype = get_ir_type((type_t*) type);
202 return get_type_size_bytes(irtype);
205 static unsigned get_array_type_size(array_type_t *type)
207 assert(!type->is_vla);
208 ir_type *irtype = get_ir_type((type_t*) type);
209 return get_type_size_bytes(irtype);
213 static unsigned get_type_size_const(type_t *type)
215 type = skip_typeref(type);
219 panic("error type occurred");
221 return get_atomic_type_size(type->atomic.akind);
223 return 2 * get_atomic_type_size(type->complex.akind);
225 return get_atomic_type_size(type->imaginary.akind);
227 return get_mode_size_bytes(mode_int);
228 case TYPE_COMPOUND_UNION:
229 case TYPE_COMPOUND_STRUCT:
230 return get_compound_type_size(&type->compound);
232 /* just a pointer to the function */
233 return get_mode_size_bytes(mode_P_code);
235 return get_mode_size_bytes(mode_P_data);
237 return get_array_type_size(&type->array);
239 return get_type_size_const(type->builtin.real_type);
241 panic("type size of bitfield request");
247 panic("Trying to determine size of invalid type");
250 static ir_node *get_type_size(type_t *type)
252 type = skip_typeref(type);
254 if(is_type_array(type) && type->array.is_vla) {
255 ir_node *size_node = type->array.size_node;
256 if(size_node == NULL) {
257 size_node = expression_to_firm(type->array.size_expression);
258 assert(!is_Const(size_node));
259 type->array.size_node = size_node;
262 ir_node *elem_size = get_type_size(type->array.element_type);
263 ir_mode *mode = get_irn_mode(size_node);
264 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
268 ir_mode *mode = get_ir_mode(type_size_t);
270 sym.type_p = get_ir_type(type);
271 return new_SymConst(mode, sym, symconst_type_size);
274 static unsigned count_parameters(const function_type_t *function_type)
278 function_parameter_t *parameter = function_type->parameters;
279 for ( ; parameter != NULL; parameter = parameter->next) {
287 * Creates a Firm type for an atomic type
289 static ir_type *create_atomic_type(const atomic_type_t *type)
291 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
292 atomic_type_kind_t kind = type->akind;
293 ir_mode *mode = _atomic_modes[kind];
294 ident *id = get_mode_ident(mode);
295 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
297 set_type_alignment_bytes(irtype, type->base.alignment);
303 * Creates a Firm type for a complex type
305 static ir_type *create_complex_type(const complex_type_t *type)
307 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
308 atomic_type_kind_t kind = type->akind;
309 ir_mode *mode = _atomic_modes[kind];
310 ident *id = get_mode_ident(mode);
315 /* FIXME: finish the array */
320 * Creates a Firm type for an imaginary type
322 static ir_type *create_imaginary_type(const imaginary_type_t *type)
324 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
325 atomic_type_kind_t kind = type->akind;
326 ir_mode *mode = _atomic_modes[kind];
327 ident *id = get_mode_ident(mode);
328 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
330 set_type_alignment_bytes(irtype, type->base.alignment);
335 static ir_type *create_method_type(const function_type_t *function_type)
337 type_t *return_type = function_type->return_type;
339 ident *id = id_unique("functiontype.%u");
340 int n_parameters = count_parameters(function_type);
341 int n_results = return_type == type_void ? 0 : 1;
342 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
343 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
345 if(return_type != type_void) {
346 ir_type *restype = get_ir_type(return_type);
347 set_method_res_type(irtype, 0, restype);
350 function_parameter_t *parameter = function_type->parameters;
352 for( ; parameter != NULL; parameter = parameter->next) {
353 ir_type *p_irtype = get_ir_type(parameter->type);
354 set_method_param_type(irtype, n, p_irtype);
358 if(function_type->variadic || function_type->unspecified_parameters) {
359 set_method_variadicity(irtype, variadicity_variadic);
365 static ir_type *create_pointer_type(pointer_type_t *type)
367 type_t *points_to = type->points_to;
368 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
369 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
370 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
371 ir_points_to, mode_P_data, dbgi);
376 static ir_type *create_array_type(array_type_t *type)
378 type_t *element_type = type->element_type;
379 ir_type *ir_element_type = get_ir_type(element_type);
381 ident *id = id_unique("array.%u");
382 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
383 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
385 const int align = get_type_alignment_bytes(ir_element_type);
386 set_type_alignment_bytes(ir_type, align);
388 if(type->size_constant) {
389 int n_elements = type->size;
391 set_array_bounds_int(ir_type, 0, 0, n_elements);
393 size_t elemsize = get_type_size_bytes(ir_element_type);
394 if(elemsize % align > 0) {
395 elemsize += align - (elemsize % align);
397 set_type_size_bytes(ir_type, n_elements * elemsize);
399 set_array_lower_bound_int(ir_type, 0, 0);
401 set_type_state(ir_type, layout_fixed);
407 * Return the signed integer type of size bits.
409 * @param size the size
411 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
414 static ir_mode *s_modes[64 + 1] = {NULL, };
418 if (size <= 0 || size > 64)
421 mode = s_modes[size];
425 snprintf(name, sizeof(name), "bf_I%u", size);
426 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
427 size <= 32 ? 32 : size );
428 s_modes[size] = mode;
432 snprintf(name, sizeof(name), "I%u", size);
433 ident *id = new_id_from_str(name);
434 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
435 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
436 set_primitive_base_type(res, base_tp);
442 * Return the unsigned integer type of size bits.
444 * @param size the size
446 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
449 static ir_mode *u_modes[64 + 1] = {NULL, };
453 if (size <= 0 || size > 64)
456 mode = u_modes[size];
460 snprintf(name, sizeof(name), "bf_U%u", size);
461 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
462 size <= 32 ? 32 : size );
463 u_modes[size] = mode;
468 snprintf(name, sizeof(name), "U%u", size);
469 ident *id = new_id_from_str(name);
470 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
471 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
472 set_primitive_base_type(res, base_tp);
477 static ir_type *create_bitfield_type(bitfield_type_t *const type)
479 type_t *base = skip_typeref(type->base_type);
480 assert(base->kind == TYPE_ATOMIC);
481 ir_type *irbase = get_ir_type(base);
483 unsigned size = fold_constant(type->size);
485 assert(!is_type_float(base));
486 if(is_type_signed(base)) {
487 return get_signed_int_type_for_bit_size(irbase, size);
489 return get_unsigned_int_type_for_bit_size(irbase, size);
493 #define INVALID_TYPE ((ir_type_ptr)-1)
496 COMPOUND_IS_STRUCT = false,
497 COMPOUND_IS_UNION = true
501 * Construct firm type from ast struct type.
503 * As anonymous inner structs get flattened to a single firm type, we might get
504 * irtype, outer_offset and out_align passed (they represent the position of
505 * the anonymous inner struct inside the resulting firm struct)
507 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
508 size_t *outer_offset, size_t *outer_align,
509 bool incomplete, bool is_union)
511 declaration_t *declaration = type->declaration;
512 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
514 if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
515 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
517 return declaration->v.irtype;
519 size_t align_all = 1;
521 size_t bit_offset = 0;
525 symbol_t *symbol = declaration->symbol;
528 id = new_id_from_str(symbol->string);
531 id = id_unique("__anonymous_union.%u");
533 id = id_unique("__anonymous_struct.%u");
536 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
539 irtype = new_d_type_union(id, dbgi);
541 irtype = new_d_type_struct(id, dbgi);
544 declaration->declaration_kind
545 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
546 declaration->v.irtype = irtype;
547 //type->base.firm_type = irtype;
549 offset = *outer_offset;
550 align_all = *outer_align;
556 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
558 declaration_t *entry = declaration->scope.declarations;
559 for( ; entry != NULL; entry = entry->next) {
560 if(entry->namespc != NAMESPACE_NORMAL)
563 size_t prev_offset = offset;
565 symbol_t *symbol = entry->symbol;
566 type_t *entry_type = skip_typeref(entry->type);
567 dbg_info *dbgi = get_dbg_info(&entry->source_position);
571 ident = new_id_from_str(symbol->string);
573 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
574 create_compound_type(&entry_type->compound, irtype, &offset,
575 &align_all, false, COMPOUND_IS_STRUCT);
576 goto finished_member;
577 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
578 create_compound_type(&entry_type->compound, irtype, &offset,
579 &align_all, false, COMPOUND_IS_UNION);
580 goto finished_member;
582 assert(entry_type->kind == TYPE_BITFIELD);
584 ident = id_unique("anon.%u");
587 ir_type *base_irtype;
588 if(entry_type->kind == TYPE_BITFIELD) {
589 base_irtype = get_ir_type(entry_type->bitfield.base_type);
591 base_irtype = get_ir_type(entry_type);
594 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
595 size_t misalign = offset % entry_alignment;
597 ir_type *entry_irtype = get_ir_type(entry_type);
598 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
601 size_t bits_remainder;
602 if(entry_type->kind == TYPE_BITFIELD) {
603 size_t size_bits = fold_constant(entry_type->bitfield.size);
604 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
606 if(size_bits > rest_size_bits) {
607 /* start a new bucket */
608 offset += entry_alignment - misalign;
614 /* put into current bucket */
615 base = offset - misalign;
616 bits_remainder = misalign * 8 + bit_offset;
619 offset += size_bits / 8;
620 bit_offset = bit_offset + (size_bits % 8);
622 size_t entry_size = get_type_size_bytes(base_irtype);
623 if(misalign > 0 || bit_offset > 0)
624 offset += entry_alignment - misalign;
628 offset += entry_size;
632 if(entry_alignment > align_all) {
633 if(entry_alignment % align_all != 0) {
634 panic("uneven alignments not supported yet");
636 align_all = entry_alignment;
639 set_entity_offset(entity, base);
640 set_entity_offset_bits_remainder(entity,
641 (unsigned char) bits_remainder);
642 //add_struct_member(irtype, entity);
643 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
644 assert(entry->v.entity == NULL);
645 entry->v.entity = entity;
649 size_t entry_size = offset - prev_offset;
650 if (entry_size > size) {
662 size_t misalign = offset % align_all;
663 if(misalign > 0 || bit_offset > 0) {
664 size += align_all - misalign;
667 if(outer_offset != NULL) {
669 *outer_offset = offset;
671 *outer_offset += size;
674 if (align_all > *outer_align) {
675 if(align_all % *outer_align != 0) {
676 panic("uneven alignments not supported yet");
678 *outer_align = align_all;
681 set_type_alignment_bytes(irtype, align_all);
682 set_type_size_bytes(irtype, size);
683 set_type_state(irtype, layout_fixed);
689 static ir_type *create_enum_type(enum_type_t *const type)
691 type->base.firm_type = ir_type_int;
693 ir_mode *const mode = mode_int;
694 tarval *const one = get_mode_one(mode);
695 tarval * tv_next = get_tarval_null(mode);
697 declaration_t *declaration = type->declaration->next;
698 for (; declaration != NULL; declaration = declaration->next) {
699 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
702 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
704 expression_t *const init = declaration->init.enum_value;
706 ir_node *const cnst = expression_to_firm(init);
707 if (!is_Const(cnst)) {
708 panic("couldn't fold constant");
710 tv_next = get_Const_tarval(cnst);
712 declaration->v.enum_val = tv_next;
713 tv_next = tarval_add(tv_next, one);
719 static ir_type *get_ir_type_incomplete(type_t *type)
721 assert(type != NULL);
722 type = skip_typeref(type);
724 if (type->base.firm_type != NULL) {
725 assert(type->base.firm_type != INVALID_TYPE);
726 return type->base.firm_type;
729 switch (type->kind) {
730 case TYPE_COMPOUND_STRUCT:
731 return create_compound_type(&type->compound, NULL, NULL, NULL,
732 true, COMPOUND_IS_STRUCT);
734 case TYPE_COMPOUND_UNION:
735 return create_compound_type(&type->compound, NULL, NULL, NULL,
736 true, COMPOUND_IS_UNION);
738 return get_ir_type(type);
742 static ir_type *get_ir_type(type_t *type)
744 assert(type != NULL);
746 type = skip_typeref(type);
748 if (type->base.firm_type != NULL) {
749 assert(type->base.firm_type != INVALID_TYPE);
750 return type->base.firm_type;
753 ir_type *firm_type = NULL;
754 switch (type->kind) {
756 panic("error type occurred");
758 firm_type = create_atomic_type(&type->atomic);
761 firm_type = create_complex_type(&type->complex);
764 firm_type = create_imaginary_type(&type->imaginary);
767 firm_type = create_method_type(&type->function);
770 firm_type = create_pointer_type(&type->pointer);
773 firm_type = create_array_type(&type->array);
775 case TYPE_COMPOUND_STRUCT:
776 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
777 false, COMPOUND_IS_STRUCT);
779 case TYPE_COMPOUND_UNION:
780 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
781 false, COMPOUND_IS_UNION);
784 firm_type = create_enum_type(&type->enumt);
787 firm_type = get_ir_type(type->builtin.real_type);
790 firm_type = create_bitfield_type(&type->bitfield);
798 if(firm_type == NULL)
799 panic("unknown type found");
801 type->base.firm_type = firm_type;
805 static inline ir_mode *get_ir_mode(type_t *type)
807 ir_type *irtype = get_ir_type(type);
809 /* firm doesn't report a mode for arrays somehow... */
810 if(is_Array_type(irtype)) {
814 ir_mode *mode = get_type_mode(irtype);
815 assert(mode != NULL);
819 /** Names of the runtime functions. */
820 static const struct {
821 int id; /**< the rts id */
822 int n_res; /**< number of return values */
823 const char *name; /**< the name of the rts function */
824 int n_params; /**< number of parameters */
825 unsigned flags; /**< language flags */
827 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
828 { rts_abort, 0, "abort", 0, _C89 },
829 { rts_alloca, 1, "alloca", 1, _ALL },
830 { rts_abs, 1, "abs", 1, _C89 },
831 { rts_labs, 1, "labs", 1, _C89 },
832 { rts_llabs, 1, "llabs", 1, _C99 },
833 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
835 { rts_fabs, 1, "fabs", 1, _C89 },
836 { rts_sqrt, 1, "sqrt", 1, _C89 },
837 { rts_cbrt, 1, "cbrt", 1, _C99 },
838 { rts_exp, 1, "exp", 1, _C89 },
839 { rts_exp2, 1, "exp2", 1, _C89 },
840 { rts_exp10, 1, "exp10", 1, _GNUC },
841 { rts_log, 1, "log", 1, _C89 },
842 { rts_log2, 1, "log2", 1, _C89 },
843 { rts_log10, 1, "log10", 1, _C89 },
844 { rts_pow, 1, "pow", 2, _C89 },
845 { rts_sin, 1, "sin", 1, _C89 },
846 { rts_cos, 1, "cos", 1, _C89 },
847 { rts_tan, 1, "tan", 1, _C89 },
848 { rts_asin, 1, "asin", 1, _C89 },
849 { rts_acos, 1, "acos", 1, _C89 },
850 { rts_atan, 1, "atan", 1, _C89 },
851 { rts_sinh, 1, "sinh", 1, _C89 },
852 { rts_cosh, 1, "cosh", 1, _C89 },
853 { rts_tanh, 1, "tanh", 1, _C89 },
855 { rts_fabsf, 1, "fabsf", 1, _C99 },
856 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
857 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
858 { rts_expf, 1, "expf", 1, _C99 },
859 { rts_exp2f, 1, "exp2f", 1, _C99 },
860 { rts_exp10f, 1, "exp10f", 1, _GNUC },
861 { rts_logf, 1, "logf", 1, _C99 },
862 { rts_log2f, 1, "log2f", 1, _C99 },
863 { rts_log10f, 1, "log10f", 1, _C99 },
864 { rts_powf, 1, "powf", 2, _C99 },
865 { rts_sinf, 1, "sinf", 1, _C99 },
866 { rts_cosf, 1, "cosf", 1, _C99 },
867 { rts_tanf, 1, "tanf", 1, _C99 },
868 { rts_asinf, 1, "asinf", 1, _C99 },
869 { rts_acosf, 1, "acosf", 1, _C99 },
870 { rts_atanf, 1, "atanf", 1, _C99 },
871 { rts_sinhf, 1, "sinhf", 1, _C99 },
872 { rts_coshf, 1, "coshf", 1, _C99 },
873 { rts_tanhf, 1, "tanhf", 1, _C99 },
875 { rts_fabsl, 1, "fabsl", 1, _C99 },
876 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
877 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
878 { rts_expl, 1, "expl", 1, _C99 },
879 { rts_exp2l, 1, "exp2l", 1, _C99 },
880 { rts_exp10l, 1, "exp10l", 1, _GNUC },
881 { rts_logl, 1, "logl", 1, _C99 },
882 { rts_log2l, 1, "log2l", 1, _C99 },
883 { rts_log10l, 1, "log10l", 1, _C99 },
884 { rts_powl, 1, "powl", 2, _C99 },
885 { rts_sinl, 1, "sinl", 1, _C99 },
886 { rts_cosl, 1, "cosl", 1, _C99 },
887 { rts_tanl, 1, "tanl", 1, _C99 },
888 { rts_asinl, 1, "asinl", 1, _C99 },
889 { rts_acosl, 1, "acosl", 1, _C99 },
890 { rts_atanl, 1, "atanl", 1, _C99 },
891 { rts_sinhl, 1, "sinhl", 1, _C99 },
892 { rts_coshl, 1, "coshl", 1, _C99 },
893 { rts_tanhl, 1, "tanhl", 1, _C99 },
895 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
896 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
897 { rts_strcmp, 1, "strcmp", 2, _C89 },
898 { rts_strncmp, 1, "strncmp", 3, _C89 }
901 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
904 * Mangles an entity linker (ld) name for win32 usage.
906 * @param ent the entity to be mangled
907 * @param declaration the declaration
909 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
913 if (is_Method_type(get_entity_type(ent)))
914 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
916 /* always add an underscore in win32 */
917 id = mangle(id_underscore, get_entity_ident(ent));
920 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
921 if (decl_modifiers & DM_DLLIMPORT) {
922 /* add prefix for imported symbols */
923 id = mangle(id_imp, id);
929 * Mangles an entity linker (ld) name for Linux ELF usage.
931 * @param ent the entity to be mangled
932 * @param declaration the declaration
934 static ident *create_ld_ident_linux_elf(ir_entity *entity,
935 declaration_t *declaration)
938 return get_entity_ident(entity);
942 * Mangles an entity linker (ld) name for Mach-O usage.
944 * @param ent the entity to be mangled
945 * @param declaration the declaration
947 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
950 ident *id = mangle(id_underscore, get_entity_ident(ent));
954 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
955 declaration_t *declaration);
956 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
959 * Creates an entity representing a function.
961 * @param declaration the function declaration
963 static ir_entity *get_function_entity(declaration_t *declaration)
965 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
966 return declaration->v.entity;
967 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
969 symbol_t *symbol = declaration->symbol;
970 ident *id = new_id_from_str(symbol->string);
972 ir_type *global_type = get_glob_type();
973 ir_type *ir_type_method = get_ir_type(declaration->type);
974 assert(is_Method_type(ir_type_method));
976 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
977 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
978 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
979 if(declaration->storage_class == STORAGE_CLASS_STATIC &&
980 declaration->init.statement == NULL) {
981 /* this entity was declared, but never defined */
982 set_entity_peculiarity(entity, peculiarity_description);
984 if(declaration->storage_class == STORAGE_CLASS_STATIC
985 || declaration->is_inline) {
986 set_entity_visibility(entity, visibility_local);
987 } else if(declaration->init.statement != NULL) {
988 set_entity_visibility(entity, visibility_external_visible);
990 set_entity_visibility(entity, visibility_external_allocated);
992 set_entity_allocation(entity, allocation_static);
994 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
995 declaration->v.entity = entity;
997 /* We should check for file scope here, but as long as we compile C only
998 this is not needed. */
999 if (! firm_opt.freestanding) {
1000 /* check for a known runtime function */
1001 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1002 if (id != rts_idents[i])
1005 /* ignore those rts functions not necessary needed for current mode */
1006 if ((c_mode & rts_data[i].flags) == 0)
1008 assert(rts_entities[rts_data[i].id] == NULL);
1009 rts_entities[rts_data[i].id] = entity;
1017 * Creates a Const node representing a constant.
1019 static ir_node *const_to_firm(const const_expression_t *cnst)
1021 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1022 ir_mode *mode = get_ir_mode(cnst->base.type);
1027 if(mode_is_float(mode)) {
1028 tv = new_tarval_from_double(cnst->v.float_value, mode);
1030 if(mode_is_signed(mode)) {
1031 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1033 len = snprintf(buf, sizeof(buf), "%llu",
1034 (unsigned long long) cnst->v.int_value);
1036 tv = new_tarval_from_str(buf, len, mode);
1039 return new_d_Const(dbgi, mode, tv);
1043 * Creates a Const node representing a character constant.
1045 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1047 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1048 ir_mode *mode = get_ir_mode(cnst->base.type);
1050 long long int v = 0;
1051 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1052 if (char_is_signed) {
1053 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1055 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1059 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1060 tarval *tv = new_tarval_from_str(buf, len, mode);
1062 return new_d_Const(dbgi, mode, tv);
1066 * Creates a Const node representing a wide character constant.
1068 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1070 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1071 ir_mode *mode = get_ir_mode(cnst->base.type);
1073 long long int v = cnst->v.wide_character.begin[0];
1076 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1077 tarval *tv = new_tarval_from_str(buf, len, mode);
1079 return new_d_Const(dbgi, mode, tv);
1083 * Creates a SymConst for a given entity.
1085 * @param dbgi debug info
1086 * @param mode the (reference) mode for the SymConst
1087 * @param entity the entity
1089 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1092 assert(entity != NULL);
1093 union symconst_symbol sym;
1094 sym.entity_p = entity;
1095 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1099 * Creates a SymConst node representing a string constant.
1101 * @param src_pos the source position of the string constant
1102 * @param id_prefix a prefix for the name of the generated string constant
1103 * @param value the value of the string constant
1105 static ir_node *string_to_firm(const source_position_t *const src_pos,
1106 const char *const id_prefix,
1107 const string_t *const value)
1109 ir_type *const global_type = get_glob_type();
1110 dbg_info *const dbgi = get_dbg_info(src_pos);
1111 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1112 ir_type_const_char, dbgi);
1114 ident *const id = id_unique(id_prefix);
1115 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1116 set_entity_ld_ident(entity, id);
1117 set_entity_variability(entity, variability_constant);
1118 set_entity_allocation(entity, allocation_static);
1120 ir_type *const elem_type = ir_type_const_char;
1121 ir_mode *const mode = get_type_mode(elem_type);
1123 const char* const string = value->begin;
1124 const size_t slen = value->size;
1126 set_array_lower_bound_int(type, 0, 0);
1127 set_array_upper_bound_int(type, 0, slen);
1128 set_type_size_bytes(type, slen);
1129 set_type_state(type, layout_fixed);
1131 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1132 for(size_t i = 0; i < slen; ++i) {
1133 tvs[i] = new_tarval_from_long(string[i], mode);
1136 set_array_entity_values(entity, tvs, slen);
1139 return create_symconst(dbgi, mode_P_data, entity);
1143 * Creates a SymConst node representing a string literal.
1145 * @param literal the string literal
1147 static ir_node *string_literal_to_firm(
1148 const string_literal_expression_t* literal)
1150 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1155 * Creates a SymConst node representing a wide string literal.
1157 * @param literal the wide string literal
1159 static ir_node *wide_string_literal_to_firm(
1160 const wide_string_literal_expression_t* const literal)
1162 ir_type *const global_type = get_glob_type();
1163 ir_type *const elem_type = ir_type_wchar_t;
1164 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1165 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1168 ident *const id = id_unique("Lstr.%u");
1169 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1170 set_entity_ld_ident(entity, id);
1171 set_entity_variability(entity, variability_constant);
1172 set_entity_allocation(entity, allocation_static);
1174 ir_mode *const mode = get_type_mode(elem_type);
1176 const wchar_rep_t *const string = literal->value.begin;
1177 const size_t slen = literal->value.size;
1179 set_array_lower_bound_int(type, 0, 0);
1180 set_array_upper_bound_int(type, 0, slen);
1181 set_type_size_bytes(type, slen);
1182 set_type_state(type, layout_fixed);
1184 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1185 for(size_t i = 0; i < slen; ++i) {
1186 tvs[i] = new_tarval_from_long(string[i], mode);
1189 set_array_entity_values(entity, tvs, slen);
1192 return create_symconst(dbgi, mode_P_data, entity);
1195 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1196 dbg_info *const dbgi)
1198 ir_type *irtype = get_ir_type(type);
1199 if (is_compound_type(irtype)
1200 || is_Method_type(irtype)
1201 || is_Array_type(irtype)) {
1205 ir_mode *const mode = get_type_mode(irtype);
1206 ir_node *const memory = get_store();
1207 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1208 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1209 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1211 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1212 set_Load_volatility(load, volatility_is_volatile);
1215 set_store(load_mem);
1220 * Creates a strict Conv if neccessary.
1222 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1224 ir_mode *mode = get_irn_mode(node);
1226 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1228 if (!mode_is_float(mode))
1231 /* check if there is already a Conv */
1232 if (is_Conv(node)) {
1233 /* convert it into a strict Conv */
1234 set_Conv_strict(node, 1);
1238 /* otherwise create a new one */
1239 return new_d_strictConv(dbgi, node, mode);
1242 static ir_node *get_global_var_address(dbg_info *const dbgi,
1243 const declaration_t *const decl)
1245 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1247 ir_entity *const entity = decl->v.entity;
1248 switch ((storage_class_tag_t)decl->storage_class) {
1249 case STORAGE_CLASS_THREAD:
1250 case STORAGE_CLASS_THREAD_EXTERN:
1251 case STORAGE_CLASS_THREAD_STATIC: {
1252 ir_node *const no_mem = new_NoMem();
1253 ir_node *const tls = get_irg_tls(current_ir_graph);
1254 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1258 return create_symconst(dbgi, mode_P_data, entity);
1263 * Returns the correct base address depending on whether it is a parameter or a
1264 * normal local variable.
1266 static ir_node *get_local_frame(ir_entity *const ent)
1268 ir_graph *const irg = current_ir_graph;
1269 const ir_type *const owner = get_entity_owner(ent);
1270 if (owner == get_irg_frame_type(irg)) {
1271 return get_irg_frame(irg);
1273 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1274 return get_irg_value_param_base(irg);
1278 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1280 ir_mode *value_mode = get_irn_mode(value);
1282 if (value_mode == dest_mode || is_Bad(value))
1285 if(dest_mode == mode_b) {
1286 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1287 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1288 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1292 return new_d_Conv(dbgi, value, dest_mode);
1295 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1297 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1298 declaration_t *declaration = ref->declaration;
1299 type_t *type = skip_typeref(declaration->type);
1301 /* make sure the type is constructed */
1302 (void) get_ir_type(type);
1304 switch((declaration_kind_t) declaration->declaration_kind) {
1305 case DECLARATION_KIND_TYPE:
1306 case DECLARATION_KIND_UNKNOWN:
1309 case DECLARATION_KIND_ENUM_ENTRY: {
1310 ir_mode *const mode = get_ir_mode(type);
1311 return new_Const(mode, declaration->v.enum_val);
1314 case DECLARATION_KIND_LOCAL_VARIABLE: {
1315 ir_mode *const mode = get_ir_mode(type);
1316 return get_value(declaration->v.value_number, mode);
1318 case DECLARATION_KIND_FUNCTION: {
1319 ir_mode *const mode = get_ir_mode(type);
1320 return create_symconst(dbgi, mode, declaration->v.entity);
1322 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1323 ir_node *const addr = get_global_var_address(dbgi, declaration);
1324 return deref_address(declaration->type, addr, dbgi);
1327 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1328 ir_entity *entity = declaration->v.entity;
1329 ir_node *frame = get_local_frame(entity);
1330 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1331 return deref_address(declaration->type, sel, dbgi);
1334 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1335 return declaration->v.vla_base;
1337 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1338 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1339 case DECLARATION_KIND_COMPOUND_MEMBER:
1340 case DECLARATION_KIND_LABEL_BLOCK:
1341 panic("not implemented reference type");
1344 panic("reference to declaration with unknown type found");
1347 static ir_node *reference_addr(const reference_expression_t *ref)
1349 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1350 declaration_t *declaration = ref->declaration;
1352 switch((declaration_kind_t) declaration->declaration_kind) {
1353 case DECLARATION_KIND_TYPE:
1354 case DECLARATION_KIND_UNKNOWN:
1356 case DECLARATION_KIND_LOCAL_VARIABLE:
1357 panic("local variable without entity has no address");
1358 case DECLARATION_KIND_FUNCTION: {
1359 type_t *const type = skip_typeref(ref->base.type);
1360 ir_mode *const mode = get_ir_mode(type);
1361 return create_symconst(dbgi, mode, declaration->v.entity);
1363 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1364 ir_node *const addr = get_global_var_address(dbgi, declaration);
1367 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1368 ir_entity *entity = declaration->v.entity;
1369 ir_node *frame = get_local_frame(entity);
1370 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1375 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1376 return declaration->v.vla_base;
1378 case DECLARATION_KIND_ENUM_ENTRY:
1379 panic("trying to reference enum entry");
1381 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1382 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1383 case DECLARATION_KIND_COMPOUND_MEMBER:
1384 case DECLARATION_KIND_LABEL_BLOCK:
1385 panic("not implemented reference type");
1388 panic("reference to declaration with unknown type found");
1392 * Transform calls to builtin functions.
1394 static ir_node *process_builtin_call(const call_expression_t *call)
1396 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1398 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1399 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1401 type_t *type = skip_typeref(builtin->base.type);
1402 assert(is_type_pointer(type));
1404 type_t *function_type = skip_typeref(type->pointer.points_to);
1405 symbol_t *symbol = builtin->symbol;
1407 switch(symbol->ID) {
1408 case T___builtin_alloca: {
1409 if(call->arguments == NULL || call->arguments->next != NULL) {
1410 panic("invalid number of parameters on __builtin_alloca");
1412 expression_t *argument = call->arguments->expression;
1413 ir_node *size = expression_to_firm(argument);
1415 ir_node *store = get_store();
1416 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1418 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1420 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1424 case T___builtin_huge_val: {
1425 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1426 tarval *tv = get_mode_infinite(mode);
1427 ir_node *res = new_d_Const(dbgi, mode, tv);
1430 case T___builtin_nan:
1431 case T___builtin_nanf:
1432 case T___builtin_nand: {
1433 /* Ignore string for now... */
1434 assert(is_type_function(function_type));
1435 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1436 tarval *tv = get_mode_NAN(mode);
1437 ir_node *res = new_d_Const(dbgi, mode, tv);
1440 case T___builtin_va_end:
1443 panic("Unsupported builtin found\n");
1448 * Transform a call expression.
1449 * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs.
1450 * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of
1451 * 256 MB if alloca is not handled right...
1453 static ir_node *call_expression_to_firm(const call_expression_t *call)
1455 assert(get_cur_block() != NULL);
1457 expression_t *function = call->function;
1458 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1459 return process_builtin_call(call);
1461 if(function->kind == EXPR_REFERENCE) {
1462 const reference_expression_t *ref = &function->reference;
1463 declaration_t *declaration = ref->declaration;
1465 if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1466 if (declaration->v.entity == rts_entities[rts_alloca]) {
1467 /* handle alloca() call */
1468 expression_t *argument = call->arguments->expression;
1469 ir_node *size = expression_to_firm(argument);
1471 ir_node *store = get_store();
1472 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1473 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1475 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1477 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1483 ir_node *callee = expression_to_firm(function);
1485 type_t *type = skip_typeref(function->base.type);
1486 assert(is_type_pointer(type));
1487 pointer_type_t *pointer_type = &type->pointer;
1488 type_t *points_to = skip_typeref(pointer_type->points_to);
1489 assert(is_type_function(points_to));
1490 function_type_t *function_type = &points_to->function;
1492 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1494 int n_parameters = 0;
1495 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1496 ir_type *new_method_type = NULL;
1497 if(function_type->variadic || function_type->unspecified_parameters) {
1498 const call_argument_t *argument = call->arguments;
1499 for( ; argument != NULL; argument = argument->next) {
1503 /* we need to construct a new method type matching the call
1505 int n_res = get_method_n_ress(ir_method_type);
1506 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1507 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1508 n_parameters, n_res, dbgi);
1509 set_method_calling_convention(new_method_type,
1510 get_method_calling_convention(ir_method_type));
1511 set_method_additional_properties(new_method_type,
1512 get_method_additional_properties(ir_method_type));
1513 set_method_variadicity(new_method_type,
1514 get_method_variadicity(ir_method_type));
1516 for(int i = 0; i < n_res; ++i) {
1517 set_method_res_type(new_method_type, i,
1518 get_method_res_type(ir_method_type, i));
1520 argument = call->arguments;
1521 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1522 expression_t *expression = argument->expression;
1523 ir_type *irtype = get_ir_type(expression->base.type);
1524 set_method_param_type(new_method_type, i, irtype);
1526 ir_method_type = new_method_type;
1528 n_parameters = get_method_n_params(ir_method_type);
1531 ir_node *in[n_parameters];
1533 const call_argument_t *argument = call->arguments;
1534 for(int n = 0; n < n_parameters; ++n) {
1535 expression_t *expression = argument->expression;
1536 ir_node *arg_node = expression_to_firm(expression);
1538 arg_node = do_strict_conv(dbgi, arg_node);
1542 argument = argument->next;
1545 ir_node *store = get_store();
1546 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1548 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1551 type_t *return_type = skip_typeref(function_type->return_type);
1552 ir_node *result = NULL;
1554 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1556 if(is_type_scalar(return_type)) {
1557 mode = get_ir_mode(return_type);
1561 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1562 result = new_d_Proj(dbgi, resproj, mode, 0);
1568 static void statement_to_firm(statement_t *statement);
1569 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1571 static ir_node *expression_to_addr(const expression_t *expression);
1572 static void create_condition_evaluation(const expression_t *expression,
1573 ir_node *true_block,
1574 ir_node *false_block);
1576 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1579 value = do_strict_conv(dbgi, value);
1581 ir_node *memory = get_store();
1583 if(is_type_scalar(type)) {
1584 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1585 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1586 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1587 set_Store_volatility(store, volatility_is_volatile);
1588 set_store(store_mem);
1590 ir_type *irtype = get_ir_type(type);
1591 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1592 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1593 set_store(copyb_mem);
1597 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1599 tarval *all_one = get_mode_all_one(mode);
1600 int mode_size = get_mode_size_bits(mode);
1602 assert(offset >= 0 && size >= 0);
1603 assert(offset + size <= mode_size);
1604 if(size == mode_size) {
1608 long shiftr = get_mode_size_bits(mode) - size;
1609 long shiftl = offset;
1610 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1611 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1612 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1613 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1618 static void bitfield_store_to_firm(const unary_expression_t *expression,
1621 expression_t *select = expression->value;
1622 assert(select->kind == EXPR_SELECT);
1623 type_t *type = select->base.type;
1624 assert(type->kind == TYPE_BITFIELD);
1625 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1626 ir_node *addr = expression_to_addr(select);
1628 assert(get_irn_mode(value) == mode || is_Bad(value));
1630 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1632 /* kill upper bits of value and shift to right position */
1633 ir_entity *entity = select->select.compound_entry->v.entity;
1634 int bitoffset = get_entity_offset_bits_remainder(entity);
1635 ir_type *entity_type = get_entity_type(entity);
1636 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1638 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1639 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1640 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1641 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1642 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1643 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1645 /* load current value */
1646 ir_node *mem = get_store();
1647 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1648 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1649 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1650 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1651 tarval *inv_mask = tarval_not(shift_mask);
1652 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1653 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1655 /* construct new value and store */
1656 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1657 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1658 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1659 set_store(store_mem);
1661 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1662 set_Load_volatility(load, volatility_is_volatile);
1663 set_Store_volatility(store, volatility_is_volatile);
1667 static void set_value_for_expression(const expression_t *expression,
1670 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1671 value = do_strict_conv(dbgi, value);
1673 if(expression->kind == EXPR_REFERENCE) {
1674 const reference_expression_t *ref = &expression->reference;
1676 declaration_t *declaration = ref->declaration;
1677 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1678 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1679 set_value(declaration->v.value_number, value);
1684 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1685 bitfield_store_to_firm(&expression->unary, value);
1689 ir_node *addr = expression_to_addr(expression);
1690 type_t *type = skip_typeref(expression->base.type);
1691 assign_value(dbgi, addr, type, value);
1694 static ir_node *create_incdec(const unary_expression_t *expression)
1696 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1697 type_t *type = skip_typeref(expression->base.type);
1698 ir_mode *mode = get_ir_mode(type);
1699 expression_t *value = expression->value;
1701 ir_node *value_node = expression_to_firm(value);
1704 if(is_type_pointer(type)) {
1705 pointer_type_t *pointer_type = &type->pointer;
1706 offset = get_type_size(pointer_type->points_to);
1708 assert(is_type_arithmetic(type));
1709 offset = new_Const(mode, get_mode_one(mode));
1712 switch(expression->base.kind) {
1713 case EXPR_UNARY_POSTFIX_INCREMENT: {
1714 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1715 set_value_for_expression(value, new_value);
1718 case EXPR_UNARY_POSTFIX_DECREMENT: {
1719 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1720 set_value_for_expression(value, new_value);
1723 case EXPR_UNARY_PREFIX_INCREMENT: {
1724 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1725 set_value_for_expression(value, new_value);
1728 case EXPR_UNARY_PREFIX_DECREMENT: {
1729 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1730 set_value_for_expression(value, new_value);
1734 panic("no incdec expr in create_incdec");
1739 static bool is_local_variable(expression_t *expression)
1741 if (expression->kind != EXPR_REFERENCE)
1743 reference_expression_t *ref_expr = &expression->reference;
1744 declaration_t *declaration = ref_expr->declaration;
1745 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1748 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1751 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1752 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1753 case EXPR_BINARY_NOTEQUAL:
1754 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1755 case EXPR_BINARY_ISLESS:
1756 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1757 case EXPR_BINARY_ISLESSEQUAL:
1758 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1759 case EXPR_BINARY_ISGREATER:
1760 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1761 case EXPR_BINARY_ISGREATEREQUAL:
1762 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1763 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1768 panic("trying to get pn_Cmp from non-comparison binexpr type");
1772 * Handle the assume optimizer hint: check if a Confirm
1773 * node can be created.
1775 * @param dbi debug info
1776 * @param expr the IL assume expression
1778 * we support here only some simple cases:
1783 static ir_node *handle_assume_compare(dbg_info *dbi,
1784 const binary_expression_t *expression)
1786 expression_t *op1 = expression->left;
1787 expression_t *op2 = expression->right;
1788 declaration_t *var2, *var = NULL;
1789 ir_node *res = NULL;
1792 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1794 if (is_local_variable(op1) && is_local_variable(op2)) {
1795 var = op1->reference.declaration;
1796 var2 = op2->reference.declaration;
1798 type_t *const type = skip_typeref(var->type);
1799 ir_mode *const mode = get_ir_mode(type);
1801 ir_node *const irn1 = get_value(var->v.value_number, mode);
1802 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1804 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1805 set_value(var2->v.value_number, res);
1807 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1808 set_value(var->v.value_number, res);
1814 if (is_local_variable(op1) && is_constant_expression(op2)) {
1815 var = op1->reference.declaration;
1817 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1818 cmp_val = get_inversed_pnc(cmp_val);
1819 var = op2->reference.declaration;
1824 type_t *const type = skip_typeref(var->type);
1825 ir_mode *const mode = get_ir_mode(type);
1827 res = get_value(var->v.value_number, mode);
1828 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1829 set_value(var->v.value_number, res);
1835 * Handle the assume optimizer hint.
1837 * @param dbi debug info
1838 * @param expr the IL assume expression
1840 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1841 switch(expression->kind) {
1842 case EXPR_BINARY_EQUAL:
1843 case EXPR_BINARY_NOTEQUAL:
1844 case EXPR_BINARY_LESS:
1845 case EXPR_BINARY_LESSEQUAL:
1846 case EXPR_BINARY_GREATER:
1847 case EXPR_BINARY_GREATEREQUAL:
1848 return handle_assume_compare(dbi, &expression->binary);
1854 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1856 expression_t *select = expression->value;
1857 assert(select->kind == EXPR_SELECT);
1859 type_t *type = select->base.type;
1860 assert(type->kind == TYPE_BITFIELD);
1861 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1862 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1863 ir_node *addr = expression_to_addr(select);
1864 ir_node *mem = get_store();
1865 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1866 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1867 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1869 load_res = create_conv(dbgi, load_res, mode_int);
1871 set_store(load_mem);
1873 /* kill upper bits */
1874 ir_entity *entity = select->select.compound_entry->v.entity;
1875 int bitoffset = get_entity_offset_bits_remainder(entity);
1876 ir_type *entity_type = get_entity_type(entity);
1877 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1878 long shift_bitsl = machine_size - bitoffset - bitsize;
1879 assert(shift_bitsl >= 0);
1880 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1881 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1882 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1884 long shift_bitsr = bitoffset + shift_bitsl;
1885 assert(shift_bitsr <= (long) machine_size);
1886 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1887 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1889 if(mode_is_signed(mode)) {
1890 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1892 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1895 return create_conv(dbgi, shiftr, mode);
1898 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1900 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1901 type_t *type = skip_typeref(expression->base.type);
1903 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1904 return expression_to_addr(expression->value);
1906 const expression_t *value = expression->value;
1908 switch(expression->base.kind) {
1909 case EXPR_UNARY_NEGATE: {
1910 ir_node *value_node = expression_to_firm(value);
1911 ir_mode *mode = get_ir_mode(type);
1912 return new_d_Minus(dbgi, value_node, mode);
1914 case EXPR_UNARY_PLUS:
1915 return expression_to_firm(value);
1916 case EXPR_UNARY_BITWISE_NEGATE: {
1917 ir_node *value_node = expression_to_firm(value);
1918 ir_mode *mode = get_ir_mode(type);
1919 return new_d_Not(dbgi, value_node, mode);
1921 case EXPR_UNARY_NOT: {
1922 ir_node *value_node = expression_to_firm(value);
1923 ir_mode *mode = get_ir_mode(type);
1924 if(get_irn_mode(value_node) != mode_b) {
1925 value_node = create_conv(dbgi, value_node, mode_b);
1927 value_node = new_d_Not(dbgi, value_node, mode_b);
1928 if(mode != mode_b) {
1929 value_node = create_conv(dbgi, value_node, mode);
1933 case EXPR_UNARY_DEREFERENCE: {
1934 ir_node *value_node = expression_to_firm(value);
1935 type_t *value_type = skip_typeref(value->base.type);
1936 assert(is_type_pointer(value_type));
1937 type_t *points_to = value_type->pointer.points_to;
1938 return deref_address(points_to, value_node, dbgi);
1940 case EXPR_UNARY_POSTFIX_INCREMENT:
1941 case EXPR_UNARY_POSTFIX_DECREMENT:
1942 case EXPR_UNARY_PREFIX_INCREMENT:
1943 case EXPR_UNARY_PREFIX_DECREMENT:
1944 return create_incdec(expression);
1945 case EXPR_UNARY_CAST: {
1946 ir_node *value_node = expression_to_firm(value);
1947 if(is_type_scalar(type)) {
1948 ir_mode *mode = get_ir_mode(type);
1949 ir_node *node = create_conv(dbgi, value_node, mode);
1950 node = do_strict_conv(dbgi, node);
1953 /* make sure firm type is constructed */
1954 (void) get_ir_type(type);
1958 case EXPR_UNARY_CAST_IMPLICIT: {
1959 ir_node *value_node = expression_to_firm(value);
1960 if(is_type_scalar(type)) {
1961 ir_mode *mode = get_ir_mode(type);
1962 return create_conv(dbgi, value_node, mode);
1967 case EXPR_UNARY_ASSUME:
1968 if(firm_opt.confirm)
1969 return handle_assume(dbgi, value);
1972 case EXPR_UNARY_BITFIELD_EXTRACT:
1973 return bitfield_extract_to_firm(expression);
1978 panic("invalid UNEXPR type found");
1981 static ir_node *produce_condition_result(const expression_t *expression,
1984 ir_mode *mode = get_ir_mode(expression->base.type);
1985 ir_node *cur_block = get_cur_block();
1987 ir_node *one_block = new_immBlock();
1988 ir_node *one = new_Const(mode, get_mode_one(mode));
1989 ir_node *jmp_one = new_d_Jmp(dbgi);
1991 ir_node *zero_block = new_immBlock();
1992 ir_node *zero = new_Const(mode, get_mode_null(mode));
1993 ir_node *jmp_zero = new_d_Jmp(dbgi);
1995 set_cur_block(cur_block);
1996 create_condition_evaluation(expression, one_block, zero_block);
1997 mature_immBlock(one_block);
1998 mature_immBlock(zero_block);
2000 ir_node *common_block = new_immBlock();
2001 add_immBlock_pred(common_block, jmp_one);
2002 add_immBlock_pred(common_block, jmp_zero);
2003 mature_immBlock(common_block);
2005 ir_node *in[2] = { one, zero };
2006 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2011 static ir_node *create_lazy_op(const binary_expression_t *expression)
2013 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2014 type_t *type = expression->base.type;
2015 ir_mode *mode = get_ir_mode(type);
2017 if(is_constant_expression(expression->left)) {
2018 long val = fold_constant(expression->left);
2019 expression_kind_t ekind = expression->base.kind;
2020 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2021 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2022 return expression_to_firm(expression->right);
2024 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2025 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2026 return new_Const(mode, get_mode_one(mode));
2030 return produce_condition_result((const expression_t*) expression, dbgi);
2033 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2034 ir_node *right, ir_mode *mode);
2036 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
2037 create_arithmetic_func func)
2039 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2040 ir_node *left = expression_to_firm(expression->left);
2041 ir_node *right = expression_to_firm(expression->right);
2042 type_t *type = expression->right->base.type;
2043 /* be careful with the modes, because in arithmetic assign nodes only
2044 * the right operand has the mode of the arithmetic already */
2045 ir_mode *mode = get_ir_mode(type);
2046 left = create_conv(dbgi, left, mode);
2047 ir_node *res = func(dbgi, left, right, mode);
2052 static ir_node *pointer_arithmetic(ir_node *const pointer,
2055 dbg_info *const dbgi,
2056 const create_arithmetic_func func)
2058 pointer_type_t *const pointer_type = &type->pointer;
2059 type_t *const points_to = pointer_type->points_to;
2060 const unsigned elem_size = get_type_size_const(points_to);
2062 assert(elem_size >= 1);
2063 if (elem_size > 1) {
2064 integer = create_conv(dbgi, integer, mode_int);
2065 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2066 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
2070 ir_mode *const mode = get_ir_mode(type);
2071 return func(dbgi, pointer, integer, mode);
2074 static ir_node *create_arithmetic_assign_binop(
2075 const binary_expression_t *expression, create_arithmetic_func func)
2077 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2078 type_t *const type = skip_typeref(expression->base.type);
2081 if (is_type_pointer(type)) {
2082 ir_node *const pointer = expression_to_firm(expression->left);
2083 ir_node * integer = expression_to_firm(expression->right);
2084 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2086 value = create_arithmetic_binop(expression, func);
2089 ir_mode *const mode = get_ir_mode(type);
2090 value = create_conv(dbgi, value, mode);
2091 set_value_for_expression(expression->left, value);
2096 static ir_node *create_add(const binary_expression_t *expression)
2098 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2099 ir_node *left = expression_to_firm(expression->left);
2100 ir_node *right = expression_to_firm(expression->right);
2101 type_t *type = expression->base.type;
2103 expression_t *expr_left = expression->left;
2104 expression_t *expr_right = expression->right;
2105 type_t *type_left = skip_typeref(expr_left->base.type);
2106 type_t *type_right = skip_typeref(expr_right->base.type);
2108 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2109 ir_mode *const mode = get_ir_mode(type);
2110 return new_d_Add(dbgi, left, right, mode);
2113 if (is_type_pointer(type_left)) {
2114 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2116 assert(is_type_pointer(type_right));
2117 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2121 static ir_node *create_sub(const binary_expression_t *expression)
2123 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2124 expression_t *const expr_left = expression->left;
2125 expression_t *const expr_right = expression->right;
2126 ir_node *const left = expression_to_firm(expr_left);
2127 ir_node *const right = expression_to_firm(expr_right);
2128 type_t *const type = expression->base.type;
2129 type_t *const type_left = skip_typeref(expr_left->base.type);
2130 type_t *const type_right = skip_typeref(expr_right->base.type);
2132 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2133 ir_mode *const mode = get_ir_mode(type);
2134 return new_d_Sub(dbgi, left, right, mode);
2135 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2136 const pointer_type_t *const ptr_type = &type_left->pointer;
2138 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2139 ir_mode *const mode = get_ir_mode(type);
2140 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2141 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2142 ir_node *const no_mem = new_NoMem();
2143 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2144 op_pin_state_floats);
2145 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2148 assert(is_type_pointer(type_left));
2149 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2152 static ir_node *create_shift(const binary_expression_t *expression)
2154 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2155 ir_node *left = expression_to_firm(expression->left);
2156 ir_node *right = expression_to_firm(expression->right);
2157 type_t *type = expression->base.type;
2158 ir_mode *mode = get_ir_mode(type);
2160 /* firm always wants the shift count to be unsigned */
2161 right = create_conv(dbgi, right, mode_uint);
2165 switch(expression->base.kind) {
2166 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2167 case EXPR_BINARY_SHIFTLEFT:
2168 res = new_d_Shl(dbgi, left, right, mode);
2170 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2171 case EXPR_BINARY_SHIFTRIGHT: {
2172 expression_t *expr_left = expression->left;
2173 type_t *type_left = skip_typeref(expr_left->base.type);
2175 if(is_type_signed(type_left)) {
2176 res = new_d_Shrs(dbgi, left, right, mode);
2178 res = new_d_Shr(dbgi, left, right, mode);
2183 panic("create shift op called for non-shift op");
2190 static ir_node *create_divmod(const binary_expression_t *expression)
2192 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2193 ir_node *left = expression_to_firm(expression->left);
2194 ir_node *right = expression_to_firm(expression->right);
2195 ir_node *pin = new_Pin(new_NoMem());
2196 /* be careful with the modes, because in arithmetic assign nodes only
2197 * the right operand has the mode of the arithmetic already */
2198 type_t *type = expression->right->base.type;
2199 ir_mode *mode = get_ir_mode(type);
2200 left = create_conv(dbgi, left, mode);
2204 switch (expression->base.kind) {
2205 case EXPR_BINARY_DIV:
2206 case EXPR_BINARY_DIV_ASSIGN:
2207 if(mode_is_float(mode)) {
2208 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2209 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2211 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2212 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2216 case EXPR_BINARY_MOD:
2217 case EXPR_BINARY_MOD_ASSIGN:
2218 assert(!mode_is_float(mode));
2219 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2220 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2223 default: panic("unexpected binary expression type in create_divmod()");
2229 static ir_node *create_arithmetic_assign_divmod(
2230 const binary_expression_t *expression)
2232 ir_node * value = create_divmod(expression);
2233 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2234 type_t *const type = expression->base.type;
2235 ir_mode *const mode = get_ir_mode(type);
2237 assert(type->kind != TYPE_POINTER);
2239 value = create_conv(dbgi, value, mode);
2240 set_value_for_expression(expression->left, value);
2245 static ir_node *create_arithmetic_assign_shift(
2246 const binary_expression_t *expression)
2248 ir_node * value = create_shift(expression);
2249 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2250 type_t *const type = expression->base.type;
2251 ir_mode *const mode = get_ir_mode(type);
2253 value = create_conv(dbgi, value, mode);
2254 set_value_for_expression(expression->left, value);
2259 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2261 expression_kind_t kind = expression->base.kind;
2264 case EXPR_BINARY_EQUAL:
2265 case EXPR_BINARY_NOTEQUAL:
2266 case EXPR_BINARY_LESS:
2267 case EXPR_BINARY_LESSEQUAL:
2268 case EXPR_BINARY_GREATER:
2269 case EXPR_BINARY_GREATEREQUAL:
2270 case EXPR_BINARY_ISGREATER:
2271 case EXPR_BINARY_ISGREATEREQUAL:
2272 case EXPR_BINARY_ISLESS:
2273 case EXPR_BINARY_ISLESSEQUAL:
2274 case EXPR_BINARY_ISLESSGREATER:
2275 case EXPR_BINARY_ISUNORDERED: {
2276 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2277 ir_node *left = expression_to_firm(expression->left);
2278 ir_node *right = expression_to_firm(expression->right);
2279 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2280 long pnc = get_pnc(kind, expression->left->base.type);
2281 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2284 case EXPR_BINARY_ASSIGN: {
2285 ir_node *right = expression_to_firm(expression->right);
2286 set_value_for_expression(expression->left, right);
2290 case EXPR_BINARY_ADD:
2291 return create_add(expression);
2292 case EXPR_BINARY_SUB:
2293 return create_sub(expression);
2294 case EXPR_BINARY_MUL:
2295 return create_arithmetic_binop(expression, new_d_Mul);
2296 case EXPR_BINARY_BITWISE_AND:
2297 return create_arithmetic_binop(expression, new_d_And);
2298 case EXPR_BINARY_BITWISE_OR:
2299 return create_arithmetic_binop(expression, new_d_Or);
2300 case EXPR_BINARY_BITWISE_XOR:
2301 return create_arithmetic_binop(expression, new_d_Eor);
2302 case EXPR_BINARY_SHIFTLEFT:
2303 case EXPR_BINARY_SHIFTRIGHT:
2304 return create_shift(expression);
2305 case EXPR_BINARY_DIV:
2306 case EXPR_BINARY_MOD:
2307 return create_divmod(expression);
2308 case EXPR_BINARY_LOGICAL_AND:
2309 case EXPR_BINARY_LOGICAL_OR:
2310 return create_lazy_op(expression);
2311 case EXPR_BINARY_COMMA:
2312 expression_to_firm(expression->left);
2313 return expression_to_firm(expression->right);
2314 case EXPR_BINARY_ADD_ASSIGN:
2315 return create_arithmetic_assign_binop(expression, new_d_Add);
2316 case EXPR_BINARY_SUB_ASSIGN:
2317 return create_arithmetic_assign_binop(expression, new_d_Sub);
2318 case EXPR_BINARY_MUL_ASSIGN:
2319 return create_arithmetic_assign_binop(expression, new_d_Mul);
2320 case EXPR_BINARY_MOD_ASSIGN:
2321 case EXPR_BINARY_DIV_ASSIGN:
2322 return create_arithmetic_assign_divmod(expression);
2323 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2324 return create_arithmetic_assign_binop(expression, new_d_And);
2325 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2326 return create_arithmetic_assign_binop(expression, new_d_Or);
2327 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2328 return create_arithmetic_assign_binop(expression, new_d_Eor);
2329 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2330 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2331 return create_arithmetic_assign_shift(expression);
2332 case EXPR_BINARY_BUILTIN_EXPECT:
2333 return expression_to_firm(expression->left);
2335 panic("TODO binexpr type");
2339 static ir_node *array_access_addr(const array_access_expression_t *expression)
2341 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2342 ir_node *base_addr = expression_to_firm(expression->array_ref);
2343 ir_node *offset = expression_to_firm(expression->index);
2345 /* Matze: it would be better to force mode to mode_uint as this creates more
2346 * opportunities for CSE. Unforunately we still have some optimisations that
2347 * are too conservative in the presence of convs. So we better go with the
2348 * mode of offset and avoid the conv */
2349 ir_mode *mode = get_irn_mode(offset);
2350 offset = create_conv(dbgi, offset, mode);
2352 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2353 assert(is_type_pointer(ref_type));
2354 pointer_type_t *pointer_type = &ref_type->pointer;
2356 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2357 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2358 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2360 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2365 static ir_node *array_access_to_firm(
2366 const array_access_expression_t *expression)
2368 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2369 ir_node *addr = array_access_addr(expression);
2370 type_t *type = revert_automatic_type_conversion(
2371 (const expression_t*) expression);
2372 type = skip_typeref(type);
2374 return deref_address(type, addr, dbgi);
2377 static long get_offsetof_offset(const offsetof_expression_t *expression)
2379 type_t *orig_type = expression->type;
2382 designator_t *designator = expression->designator;
2383 for( ; designator != NULL; designator = designator->next) {
2384 type_t *type = skip_typeref(orig_type);
2385 /* be sure the type is constructed */
2386 (void) get_ir_type(type);
2388 if(designator->symbol != NULL) {
2389 assert(is_type_compound(type));
2390 symbol_t *symbol = designator->symbol;
2392 declaration_t *declaration = type->compound.declaration;
2393 declaration_t *iter = declaration->scope.declarations;
2394 for( ; iter != NULL; iter = iter->next) {
2395 if(iter->symbol == symbol) {
2399 assert(iter != NULL);
2401 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2402 offset += get_entity_offset(iter->v.entity);
2404 orig_type = iter->type;
2406 expression_t *array_index = designator->array_index;
2407 assert(designator->array_index != NULL);
2408 assert(is_type_array(type));
2409 assert(is_type_valid(array_index->base.type));
2411 long index = fold_constant(array_index);
2412 ir_type *arr_type = get_ir_type(type);
2413 ir_type *elem_type = get_array_element_type(arr_type);
2414 long elem_size = get_type_size_bytes(elem_type);
2416 offset += index * elem_size;
2418 orig_type = type->array.element_type;
2425 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2427 ir_mode *mode = get_ir_mode(expression->base.type);
2428 long offset = get_offsetof_offset(expression);
2429 tarval *tv = new_tarval_from_long(offset, mode);
2430 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2432 return new_d_Const(dbgi, mode, tv);
2435 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2436 ir_entity *entity, type_t *type);
2438 static ir_node *compound_literal_to_firm(
2439 const compound_literal_expression_t *expression)
2441 type_t *type = expression->type;
2443 /* create an entity on the stack */
2444 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2446 ident *const id = id_unique("CompLit.%u");
2447 ir_type *const irtype = get_ir_type(type);
2448 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2449 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2450 set_entity_ld_ident(entity, id);
2452 set_entity_variability(entity, variability_uninitialized);
2454 /* create initialisation code */
2455 initializer_t *initializer = expression->initializer;
2456 create_local_initializer(initializer, dbgi, entity, type);
2458 /* create a sel for the compound literal address */
2459 ir_node *frame = get_local_frame(entity);
2460 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2465 * Transform a sizeof expression into Firm code.
2467 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2469 type_t *type = expression->type;
2471 type = expression->tp_expression->base.type;
2472 assert(type != NULL);
2475 type = skip_typeref(type);
2476 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2477 if(is_type_array(type) && type->array.is_vla
2478 && expression->tp_expression != NULL) {
2479 expression_to_firm(expression->tp_expression);
2482 return get_type_size(type);
2486 * Transform an alignof expression into Firm code.
2488 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2490 type_t *type = expression->type;
2492 /* beware: if expression is a variable reference, return the
2493 alignment of the variable. */
2494 const expression_t *tp_expression = expression->tp_expression;
2495 const declaration_t *declaration = expr_is_variable(tp_expression);
2496 if (declaration != NULL) {
2497 /* TODO: get the alignment of this variable. */
2499 type = tp_expression->base.type;
2500 assert(type != NULL);
2503 ir_mode *const mode = get_ir_mode(expression->base.type);
2504 symconst_symbol sym;
2505 sym.type_p = get_ir_type(type);
2506 return new_SymConst(mode, sym, symconst_type_align);
2509 static void init_ir_types(void);
2510 long fold_constant(const expression_t *expression)
2514 assert(is_constant_expression(expression));
2516 ir_graph *old_current_ir_graph = current_ir_graph;
2517 if(current_ir_graph == NULL) {
2518 current_ir_graph = get_const_code_irg();
2521 ir_node *cnst = expression_to_firm(expression);
2522 current_ir_graph = old_current_ir_graph;
2524 if(!is_Const(cnst)) {
2525 panic("couldn't fold constant\n");
2528 tarval *tv = get_Const_tarval(cnst);
2529 if(!tarval_is_long(tv)) {
2530 panic("result of constant folding is not integer\n");
2533 return get_tarval_long(tv);
2536 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2538 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2540 /* first try to fold a constant condition */
2541 if(is_constant_expression(expression->condition)) {
2542 long val = fold_constant(expression->condition);
2544 return expression_to_firm(expression->true_expression);
2546 return expression_to_firm(expression->false_expression);
2550 ir_node *cur_block = get_cur_block();
2552 /* create the true block */
2553 ir_node *true_block = new_immBlock();
2555 ir_node *true_val = expression_to_firm(expression->true_expression);
2556 ir_node *true_jmp = new_Jmp();
2558 /* create the false block */
2559 ir_node *false_block = new_immBlock();
2561 ir_node *false_val = expression_to_firm(expression->false_expression);
2562 ir_node *false_jmp = new_Jmp();
2564 /* create the condition evaluation */
2565 set_cur_block(cur_block);
2566 create_condition_evaluation(expression->condition, true_block, false_block);
2567 mature_immBlock(true_block);
2568 mature_immBlock(false_block);
2570 /* create the common block */
2571 ir_node *common_block = new_immBlock();
2572 add_immBlock_pred(common_block, true_jmp);
2573 add_immBlock_pred(common_block, false_jmp);
2574 mature_immBlock(common_block);
2576 /* TODO improve static semantics, so either both or no values are NULL */
2577 if (true_val == NULL || false_val == NULL)
2580 ir_node *in[2] = { true_val, false_val };
2581 ir_mode *mode = get_irn_mode(true_val);
2582 assert(get_irn_mode(false_val) == mode);
2583 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2589 * Returns an IR-node representing the address of a field.
2591 static ir_node *select_addr(const select_expression_t *expression)
2593 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2595 ir_node *compound_addr = expression_to_firm(expression->compound);
2597 /* make sure the type is constructed */
2598 type_t *type = skip_typeref(expression->compound->base.type);
2599 if (is_type_pointer(type)) {
2600 type = type->pointer.points_to;
2602 (void) get_ir_type(type);
2604 declaration_t *entry = expression->compound_entry;
2605 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2606 ir_entity *entity = entry->v.entity;
2608 assert(entity != NULL);
2610 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2615 static ir_node *select_to_firm(const select_expression_t *expression)
2617 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2618 ir_node *addr = select_addr(expression);
2619 type_t *type = revert_automatic_type_conversion(
2620 (const expression_t*) expression);
2621 type = skip_typeref(type);
2623 return deref_address(type, addr, dbgi);
2626 /* Values returned by __builtin_classify_type. */
2627 typedef enum gcc_type_class
2633 enumeral_type_class,
2636 reference_type_class,
2640 function_type_class,
2651 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2653 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2659 const atomic_type_t *const atomic_type = &type->atomic;
2660 switch (atomic_type->akind) {
2661 /* should not be reached */
2662 case ATOMIC_TYPE_INVALID:
2666 /* gcc cannot do that */
2667 case ATOMIC_TYPE_VOID:
2668 tc = void_type_class;
2671 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2672 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2673 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2674 case ATOMIC_TYPE_SHORT:
2675 case ATOMIC_TYPE_USHORT:
2676 case ATOMIC_TYPE_INT:
2677 case ATOMIC_TYPE_UINT:
2678 case ATOMIC_TYPE_LONG:
2679 case ATOMIC_TYPE_ULONG:
2680 case ATOMIC_TYPE_LONGLONG:
2681 case ATOMIC_TYPE_ULONGLONG:
2682 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2683 tc = integer_type_class;
2686 case ATOMIC_TYPE_FLOAT:
2687 case ATOMIC_TYPE_DOUBLE:
2688 case ATOMIC_TYPE_LONG_DOUBLE:
2689 tc = real_type_class;
2692 panic("Unexpected atomic type in classify_type_to_firm().");
2695 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2696 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2697 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2698 case TYPE_ARRAY: /* gcc handles this as pointer */
2699 case TYPE_FUNCTION: /* gcc handles this as pointer */
2700 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2701 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2702 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2704 /* gcc handles this as integer */
2705 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2708 /* typedef/typeof should be skipped already */
2715 panic("unexpected TYPE classify_type_to_firm().");
2718 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2719 ir_mode *const mode = mode_int;
2720 tarval *const tv = new_tarval_from_long(tc, mode);
2721 return new_d_Const(dbgi, mode, tv);
2724 static ir_node *function_name_to_firm(
2725 const funcname_expression_t *const expr)
2727 switch(expr->kind) {
2728 case FUNCNAME_FUNCTION:
2729 case FUNCNAME_PRETTY_FUNCTION:
2730 case FUNCNAME_FUNCDNAME:
2731 if (current_function_name == NULL) {
2732 const source_position_t *const src_pos = &expr->base.source_position;
2733 const char *const name = current_function_decl->symbol->string;
2734 const string_t string = { name, strlen(name) + 1 };
2735 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2737 return current_function_name;
2738 case FUNCNAME_FUNCSIG:
2739 if (current_funcsig == NULL) {
2740 const source_position_t *const src_pos = &expr->base.source_position;
2741 ir_entity *ent = get_irg_entity(current_ir_graph);
2742 const char *const name = get_entity_ld_name(ent);
2743 const string_t string = { name, strlen(name) + 1 };
2744 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2746 return current_funcsig;
2748 panic("Unsupported function name");
2751 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2753 statement_t *statement = expr->statement;
2755 assert(statement->kind == STATEMENT_COMPOUND);
2756 return compound_statement_to_firm(&statement->compound);
2759 static ir_node *va_start_expression_to_firm(
2760 const va_start_expression_t *const expr)
2762 ir_type *const method_type = get_ir_type(current_function_decl->type);
2763 int const n = get_method_n_params(method_type) - 1;
2764 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2765 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2766 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2767 ir_node *const no_mem = new_NoMem();
2768 ir_node *const arg_sel =
2769 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2771 ir_node *const cnst = get_type_size(expr->parameter->type);
2772 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2773 set_value_for_expression(expr->ap, add);
2778 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2780 type_t *const type = expr->base.type;
2781 ir_node *const ap = expression_to_firm(expr->ap);
2782 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2783 ir_node *const res = deref_address(type, ap, dbgi);
2785 ir_node *const cnst = get_type_size(expr->base.type);
2786 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2787 set_value_for_expression(expr->ap, add);
2792 static ir_node *dereference_addr(const unary_expression_t *const expression)
2794 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2795 return expression_to_firm(expression->value);
2799 * Returns a IR-node representing an lvalue of the given expression.
2801 static ir_node *expression_to_addr(const expression_t *expression)
2803 switch(expression->kind) {
2804 case EXPR_REFERENCE:
2805 return reference_addr(&expression->reference);
2806 case EXPR_ARRAY_ACCESS:
2807 return array_access_addr(&expression->array_access);
2809 return select_addr(&expression->select);
2811 return call_expression_to_firm(&expression->call);
2812 case EXPR_UNARY_DEREFERENCE: {
2813 return dereference_addr(&expression->unary);
2818 panic("trying to get address of non-lvalue");
2821 static ir_node *builtin_constant_to_firm(
2822 const builtin_constant_expression_t *expression)
2824 ir_mode *mode = get_ir_mode(expression->base.type);
2827 if (is_constant_expression(expression->value)) {
2832 return new_Const_long(mode, v);
2835 static ir_node *builtin_prefetch_to_firm(
2836 const builtin_prefetch_expression_t *expression)
2838 ir_node *adr = expression_to_firm(expression->adr);
2839 /* no Firm support for prefetch yet */
2844 static ir_node *_expression_to_firm(const expression_t *expression)
2846 switch(expression->kind) {
2847 case EXPR_CHARACTER_CONSTANT:
2848 return character_constant_to_firm(&expression->conste);
2849 case EXPR_WIDE_CHARACTER_CONSTANT:
2850 return wide_character_constant_to_firm(&expression->conste);
2852 return const_to_firm(&expression->conste);
2853 case EXPR_STRING_LITERAL:
2854 return string_literal_to_firm(&expression->string);
2855 case EXPR_WIDE_STRING_LITERAL:
2856 return wide_string_literal_to_firm(&expression->wide_string);
2857 case EXPR_REFERENCE:
2858 return reference_expression_to_firm(&expression->reference);
2860 return call_expression_to_firm(&expression->call);
2862 return unary_expression_to_firm(&expression->unary);
2864 return binary_expression_to_firm(&expression->binary);
2865 case EXPR_ARRAY_ACCESS:
2866 return array_access_to_firm(&expression->array_access);
2868 return sizeof_to_firm(&expression->typeprop);
2870 return alignof_to_firm(&expression->typeprop);
2871 case EXPR_CONDITIONAL:
2872 return conditional_to_firm(&expression->conditional);
2874 return select_to_firm(&expression->select);
2875 case EXPR_CLASSIFY_TYPE:
2876 return classify_type_to_firm(&expression->classify_type);
2878 return function_name_to_firm(&expression->funcname);
2879 case EXPR_STATEMENT:
2880 return statement_expression_to_firm(&expression->statement);
2882 return va_start_expression_to_firm(&expression->va_starte);
2884 return va_arg_expression_to_firm(&expression->va_arge);
2885 case EXPR_BUILTIN_SYMBOL:
2886 panic("unimplemented expression found");
2887 case EXPR_BUILTIN_CONSTANT_P:
2888 return builtin_constant_to_firm(&expression->builtin_constant);
2889 case EXPR_BUILTIN_PREFETCH:
2890 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2892 return offsetof_to_firm(&expression->offsetofe);
2893 case EXPR_COMPOUND_LITERAL:
2894 return compound_literal_to_firm(&expression->compound_literal);
2900 panic("invalid expression found");
2903 static ir_node *expression_to_firm(const expression_t *expression)
2905 ir_node *res = _expression_to_firm(expression);
2907 if(res != NULL && get_irn_mode(res) == mode_b) {
2908 ir_mode *mode = get_ir_mode(expression->base.type);
2910 if(is_Const_null(res)) {
2911 return new_Const_long(mode, 0);
2913 assert(is_Const_one(res));
2914 return new_Const_long(mode, 1);
2918 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2919 return produce_condition_result(expression, dbgi);
2925 static ir_node *expression_to_modeb(const expression_t *expression)
2927 ir_node *res = _expression_to_firm(expression);
2928 res = create_conv(NULL, res, mode_b);
2934 * create a short-circuit expression evaluation that tries to construct
2935 * efficient control flow structures for &&, || and ! expressions
2937 static void create_condition_evaluation(const expression_t *expression,
2938 ir_node *true_block,
2939 ir_node *false_block)
2941 switch(expression->kind) {
2942 case EXPR_UNARY_NOT: {
2943 const unary_expression_t *unary_expression = &expression->unary;
2944 create_condition_evaluation(unary_expression->value, false_block,
2948 case EXPR_BINARY_LOGICAL_AND: {
2949 const binary_expression_t *binary_expression = &expression->binary;
2951 ir_node *cur_block = get_cur_block();
2952 ir_node *extra_block = new_immBlock();
2953 set_cur_block(cur_block);
2954 create_condition_evaluation(binary_expression->left, extra_block,
2956 mature_immBlock(extra_block);
2957 set_cur_block(extra_block);
2958 create_condition_evaluation(binary_expression->right, true_block,
2962 case EXPR_BINARY_LOGICAL_OR: {
2963 const binary_expression_t *binary_expression = &expression->binary;
2965 ir_node *cur_block = get_cur_block();
2966 ir_node *extra_block = new_immBlock();
2967 set_cur_block(cur_block);
2968 create_condition_evaluation(binary_expression->left, true_block,
2970 mature_immBlock(extra_block);
2971 set_cur_block(extra_block);
2972 create_condition_evaluation(binary_expression->right, true_block,
2980 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2981 ir_node *condition = expression_to_modeb(expression);
2982 ir_node *cond = new_d_Cond(dbgi, condition);
2983 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2984 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2986 /* set branch prediction info based on __builtin_expect */
2987 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2988 long cnst = fold_constant(expression->binary.right);
2989 cond_jmp_predicate pred;
2992 pred = COND_JMP_PRED_FALSE;
2994 pred = COND_JMP_PRED_TRUE;
2996 set_Cond_jmp_pred(cond, pred);
2999 add_immBlock_pred(true_block, true_proj);
3000 add_immBlock_pred(false_block, false_proj);
3002 set_cur_block(NULL);
3007 static void create_declaration_entity(declaration_t *declaration,
3008 declaration_kind_t declaration_kind,
3009 ir_type *parent_type)
3011 ident *const id = new_id_from_str(declaration->symbol->string);
3012 type_t *const type = skip_typeref(declaration->type);
3013 ir_type *const irtype = get_ir_type(type);
3014 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3015 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3017 declaration->declaration_kind = (unsigned char) declaration_kind;
3018 declaration->v.entity = entity;
3019 set_entity_variability(entity, variability_uninitialized);
3020 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3021 if(parent_type == get_tls_type())
3022 set_entity_allocation(entity, allocation_automatic);
3023 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3024 set_entity_allocation(entity, allocation_static);
3026 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3027 set_entity_volatility(entity, volatility_is_volatile);
3032 typedef struct type_path_entry_t type_path_entry_t;
3033 struct type_path_entry_t {
3035 ir_initializer_t *initializer;
3037 declaration_t *compound_entry;
3040 typedef struct type_path_t type_path_t;
3041 struct type_path_t {
3042 type_path_entry_t *path;
3047 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3049 size_t len = ARR_LEN(path->path);
3051 for(size_t i = 0; i < len; ++i) {
3052 const type_path_entry_t *entry = & path->path[i];
3054 type_t *type = skip_typeref(entry->type);
3055 if(is_type_compound(type)) {
3056 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3057 } else if(is_type_array(type)) {
3058 fprintf(stderr, "[%zd]", entry->index);
3060 fprintf(stderr, "-INVALID-");
3063 fprintf(stderr, " (");
3064 print_type(path->top_type);
3065 fprintf(stderr, ")");
3068 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3070 size_t len = ARR_LEN(path->path);
3072 return & path->path[len-1];
3075 static type_path_entry_t *append_to_type_path(type_path_t *path)
3077 size_t len = ARR_LEN(path->path);
3078 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3080 type_path_entry_t *result = & path->path[len];
3081 memset(result, 0, sizeof(result[0]));
3085 static size_t get_compound_size(const compound_type_t *type)
3087 declaration_t *declaration = type->declaration;
3088 declaration_t *member = declaration->scope.declarations;
3090 for( ; member != NULL; member = member->next) {
3093 /* TODO: cache results? */
3098 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3100 type_t *orig_top_type = path->top_type;
3101 type_t *top_type = skip_typeref(orig_top_type);
3103 assert(is_type_compound(top_type) || is_type_array(top_type));
3105 if(ARR_LEN(path->path) == 0) {
3108 type_path_entry_t *top = get_type_path_top(path);
3109 ir_initializer_t *initializer = top->initializer;
3110 return get_initializer_compound_value(initializer, top->index);
3114 static void descend_into_subtype(type_path_t *path)
3116 type_t *orig_top_type = path->top_type;
3117 type_t *top_type = skip_typeref(orig_top_type);
3119 assert(is_type_compound(top_type) || is_type_array(top_type));
3121 ir_initializer_t *initializer = get_initializer_entry(path);
3123 type_path_entry_t *top = append_to_type_path(path);
3124 top->type = top_type;
3128 if(is_type_compound(top_type)) {
3129 declaration_t *declaration = top_type->compound.declaration;
3130 declaration_t *entry = declaration->scope.declarations;
3132 top->compound_entry = entry;
3134 len = get_compound_size(&top_type->compound);
3136 path->top_type = entry->type;
3138 assert(is_type_array(top_type));
3139 assert(top_type->array.size > 0);
3142 path->top_type = top_type->array.element_type;
3143 len = top_type->array.size;
3145 if(initializer == NULL
3146 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3147 initializer = create_initializer_compound(len);
3148 /* we have to set the entry at the 2nd latest path entry... */
3149 size_t path_len = ARR_LEN(path->path);
3150 assert(path_len >= 1);
3152 type_path_entry_t *entry = & path->path[path_len-2];
3153 ir_initializer_t *tinitializer = entry->initializer;
3154 set_initializer_compound_value(tinitializer, entry->index,
3158 top->initializer = initializer;
3161 static void ascend_from_subtype(type_path_t *path)
3163 type_path_entry_t *top = get_type_path_top(path);
3165 path->top_type = top->type;
3167 size_t len = ARR_LEN(path->path);
3168 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3171 static void walk_designator(type_path_t *path, const designator_t *designator)
3173 /* designators start at current object type */
3174 ARR_RESIZE(type_path_entry_t, path->path, 1);
3176 for( ; designator != NULL; designator = designator->next) {
3177 type_path_entry_t *top = get_type_path_top(path);
3178 type_t *orig_type = top->type;
3179 type_t *type = skip_typeref(orig_type);
3181 if(designator->symbol != NULL) {
3182 assert(is_type_compound(type));
3184 symbol_t *symbol = designator->symbol;
3186 declaration_t *declaration = type->compound.declaration;
3187 declaration_t *iter = declaration->scope.declarations;
3188 for( ; iter != NULL; iter = iter->next, ++index) {
3189 if(iter->symbol == symbol) {
3193 assert(iter != NULL);
3195 top->type = orig_type;
3196 top->compound_entry = iter;
3198 orig_type = iter->type;
3200 expression_t *array_index = designator->array_index;
3201 assert(designator->array_index != NULL);
3202 assert(is_type_array(type));
3203 assert(is_type_valid(array_index->base.type));
3205 long index = fold_constant(array_index);
3208 if(type->array.size_constant == 1) {
3209 long array_size = type->array.size;
3210 assert(index < array_size);
3214 top->type = orig_type;
3215 top->index = (size_t) index;
3216 orig_type = type->array.element_type;
3218 path->top_type = orig_type;
3220 if(designator->next != NULL) {
3221 descend_into_subtype(path);
3225 path->invalid = false;
3228 static void advance_current_object(type_path_t *path)
3231 /* TODO: handle this... */
3232 panic("invalid initializer in ast2firm (excessive elements)");
3236 type_path_entry_t *top = get_type_path_top(path);
3238 type_t *type = skip_typeref(top->type);
3239 if(is_type_union(type)) {
3240 top->compound_entry = NULL;
3241 } else if(is_type_struct(type)) {
3242 declaration_t *entry = top->compound_entry;
3245 entry = entry->next;
3246 top->compound_entry = entry;
3248 path->top_type = entry->type;
3252 assert(is_type_array(type));
3255 if(!type->array.size_constant || top->index < type->array.size) {
3260 /* we're past the last member of the current sub-aggregate, try if we
3261 * can ascend in the type hierarchy and continue with another subobject */
3262 size_t len = ARR_LEN(path->path);
3265 ascend_from_subtype(path);
3266 advance_current_object(path);
3268 path->invalid = true;
3273 static ir_initializer_t *create_ir_initializer(
3274 const initializer_t *initializer, type_t *type);
3276 static ir_initializer_t *create_ir_initializer_value(
3277 const initializer_value_t *initializer)
3279 if (is_type_compound(initializer->value->base.type)) {
3280 panic("initializer creation for compounds not implemented yet");
3282 ir_node *value = expression_to_firm(initializer->value);
3283 return create_initializer_const(value);
3286 static ir_initializer_t *create_ir_initializer_list(
3287 const initializer_list_t *initializer, type_t *type)
3290 memset(&path, 0, sizeof(path));
3291 path.top_type = type;
3292 path.path = NEW_ARR_F(type_path_entry_t, 0);
3294 descend_into_subtype(&path);
3296 for(size_t i = 0; i < initializer->len; ++i) {
3297 const initializer_t *sub_initializer = initializer->initializers[i];
3299 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3300 walk_designator(&path, sub_initializer->designator.designator);
3304 if(sub_initializer->kind == INITIALIZER_VALUE) {
3305 /* we might have to descend into types until we're at a scalar
3308 type_t *orig_top_type = path.top_type;
3309 type_t *top_type = skip_typeref(orig_top_type);
3311 if(is_type_scalar(top_type))
3313 descend_into_subtype(&path);
3317 ir_initializer_t *sub_irinitializer
3318 = create_ir_initializer(sub_initializer, path.top_type);
3320 size_t path_len = ARR_LEN(path.path);
3321 assert(path_len >= 1);
3322 type_path_entry_t *entry = & path.path[path_len-1];
3323 ir_initializer_t *tinitializer = entry->initializer;
3324 set_initializer_compound_value(tinitializer, entry->index,
3327 advance_current_object(&path);
3330 assert(ARR_LEN(path.path) >= 1);
3331 ir_initializer_t *result = path.path[0].initializer;
3332 DEL_ARR_F(path.path);
3337 static ir_initializer_t *create_ir_initializer_string(
3338 const initializer_string_t *initializer, type_t *type)
3340 type = skip_typeref(type);
3342 size_t string_len = initializer->string.size;
3343 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3344 size_t len = type->array.size;
3345 ir_initializer_t *irinitializer = create_initializer_compound(len);
3347 const char *string = initializer->string.begin;
3348 ir_mode *mode = get_type_mode(ir_type_const_char);
3350 for(size_t i = 0; i < len; ++i) {
3355 tarval *tv = new_tarval_from_long(c, mode);
3356 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3358 set_initializer_compound_value(irinitializer, i, char_initializer);
3361 return irinitializer;
3364 static ir_initializer_t *create_ir_initializer_wide_string(
3365 const initializer_wide_string_t *initializer, type_t *type)
3367 size_t string_len = initializer->string.size;
3368 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3369 size_t len = type->array.size;
3370 ir_initializer_t *irinitializer = create_initializer_compound(len);
3372 const wchar_rep_t *string = initializer->string.begin;
3373 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3375 for(size_t i = 0; i < len; ++i) {
3377 if(i < string_len) {
3380 tarval *tv = new_tarval_from_long(c, mode);
3381 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3383 set_initializer_compound_value(irinitializer, i, char_initializer);
3386 return irinitializer;
3389 static ir_initializer_t *create_ir_initializer(
3390 const initializer_t *initializer, type_t *type)
3392 switch(initializer->kind) {
3393 case INITIALIZER_STRING:
3394 return create_ir_initializer_string(&initializer->string, type);
3396 case INITIALIZER_WIDE_STRING:
3397 return create_ir_initializer_wide_string(&initializer->wide_string,
3400 case INITIALIZER_LIST:
3401 return create_ir_initializer_list(&initializer->list, type);
3403 case INITIALIZER_VALUE:
3404 return create_ir_initializer_value(&initializer->value);
3406 case INITIALIZER_DESIGNATOR:
3407 panic("unexpected designator initializer found");
3409 panic("unknown initializer");
3412 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3415 if (is_atomic_type(type)) {
3416 ir_mode *mode = get_type_mode(type);
3417 tarval *zero = get_mode_null(mode);
3418 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3420 /* TODO: bitfields */
3421 ir_node *mem = get_store();
3422 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3423 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3426 assert(is_compound_type(type));
3429 if(is_Array_type(type)) {
3430 assert(has_array_upper_bound(type, 0));
3431 n_members = get_array_upper_bound_int(type, 0);
3433 n_members = get_compound_n_members(type);
3436 for(int i = 0; i < n_members; ++i) {
3439 if(is_Array_type(type)) {
3440 ir_entity *entity = get_array_element_entity(type);
3441 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3442 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3443 ir_node *in[1] = { cnst };
3444 irtype = get_array_element_type(type);
3445 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3447 ir_entity *member = get_compound_member(type, i);
3449 irtype = get_entity_type(member);
3450 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3453 create_dynamic_null_initializer(irtype, dbgi, addr);
3458 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3459 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3461 switch(get_initializer_kind(initializer)) {
3462 case IR_INITIALIZER_NULL: {
3463 create_dynamic_null_initializer(type, dbgi, base_addr);
3466 case IR_INITIALIZER_CONST: {
3467 ir_node *node = get_initializer_const_value(initializer);
3468 ir_mode *mode = get_irn_mode(node);
3469 assert(get_type_mode(type) == mode);
3471 /* TODO: bitfields... */
3472 ir_node *mem = get_store();
3473 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3474 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3478 case IR_INITIALIZER_TARVAL: {
3479 tarval *tv = get_initializer_tarval_value(initializer);
3480 ir_mode *mode = get_tarval_mode(tv);
3481 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3482 assert(get_type_mode(type) == mode);
3484 /* TODO: bitfields... */
3485 ir_node *mem = get_store();
3486 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3487 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3491 case IR_INITIALIZER_COMPOUND: {
3492 assert(is_compound_type(type));
3494 if(is_Array_type(type)) {
3495 assert(has_array_upper_bound(type, 0));
3496 n_members = get_array_upper_bound_int(type, 0);
3498 n_members = get_compound_n_members(type);
3501 if(get_initializer_compound_n_entries(initializer)
3502 != (unsigned) n_members)
3503 panic("initializer doesn't match compound type");
3505 for(int i = 0; i < n_members; ++i) {
3508 if(is_Array_type(type)) {
3509 ir_entity *entity = get_array_element_entity(type);
3510 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3511 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3512 ir_node *in[1] = { cnst };
3513 irtype = get_array_element_type(type);
3514 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3516 ir_entity *member = get_compound_member(type, i);
3518 irtype = get_entity_type(member);
3519 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3522 ir_initializer_t *sub_init
3523 = get_initializer_compound_value(initializer, i);
3525 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3531 panic("invalid IR_INITIALIZER found");
3534 static void create_dynamic_initializer(ir_initializer_t *initializer,
3535 dbg_info *dbgi, ir_entity *entity)
3537 ir_node *frame = get_local_frame(entity);
3538 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3539 ir_type *type = get_entity_type(entity);
3541 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3544 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3545 ir_entity *entity, type_t *type)
3547 ir_node *memory = get_store();
3548 ir_node *nomem = new_NoMem();
3549 ir_node *frame = get_irg_frame(current_ir_graph);
3550 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3552 if(initializer->kind == INITIALIZER_VALUE) {
3553 initializer_value_t *initializer_value = &initializer->value;
3555 ir_node *value = expression_to_firm(initializer_value->value);
3556 type = skip_typeref(type);
3557 assign_value(dbgi, addr, type, value);
3561 if(!is_constant_initializer(initializer)) {
3562 ir_initializer_t *irinitializer
3563 = create_ir_initializer(initializer, type);
3565 create_dynamic_initializer(irinitializer, dbgi, entity);
3569 /* create the ir_initializer */
3570 ir_graph *const old_current_ir_graph = current_ir_graph;
3571 current_ir_graph = get_const_code_irg();
3573 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3575 assert(current_ir_graph == get_const_code_irg());
3576 current_ir_graph = old_current_ir_graph;
3578 /* create a "template" entity which is copied to the entity on the stack */
3579 ident *const id = id_unique("initializer.%u");
3580 ir_type *const irtype = get_ir_type(type);
3581 ir_type *const global_type = get_glob_type();
3582 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3583 set_entity_ld_ident(init_entity, id);
3585 set_entity_variability(init_entity, variability_initialized);
3586 set_entity_visibility(init_entity, visibility_local);
3587 set_entity_allocation(init_entity, allocation_static);
3589 set_entity_initializer(init_entity, irinitializer);
3591 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3592 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3594 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3595 set_store(copyb_mem);
3598 static void create_initializer_local_variable_entity(declaration_t *declaration)
3600 initializer_t *initializer = declaration->init.initializer;
3601 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3602 ir_entity *entity = declaration->v.entity;
3603 type_t *type = declaration->type;
3604 create_local_initializer(initializer, dbgi, entity, type);
3607 static void create_declaration_initializer(declaration_t *declaration)
3609 initializer_t *initializer = declaration->init.initializer;
3610 if(initializer == NULL)
3613 declaration_kind_t declaration_kind
3614 = (declaration_kind_t) declaration->declaration_kind;
3615 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3616 create_initializer_local_variable_entity(declaration);
3620 if(initializer->kind == INITIALIZER_VALUE) {
3621 initializer_value_t *initializer_value = &initializer->value;
3623 = get_dbg_info(&declaration->source_position);
3625 ir_node *value = expression_to_firm(initializer_value->value);
3626 value = do_strict_conv(dbgi, value);
3628 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3629 set_value(declaration->v.value_number, value);
3631 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3633 ir_entity *entity = declaration->v.entity;
3635 set_entity_variability(entity, variability_initialized);
3636 set_atomic_ent_value(entity, value);
3639 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3640 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3642 ir_entity *entity = declaration->v.entity;
3643 ir_initializer_t *irinitializer
3644 = create_ir_initializer(initializer, declaration->type);
3646 set_entity_variability(entity, variability_initialized);
3647 set_entity_initializer(entity, irinitializer);
3651 static void create_variable_length_array(declaration_t *declaration)
3653 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3654 type_t *type = declaration->type;
3655 ir_node *mem = get_store();
3656 ir_type *el_type = get_ir_type(type->array.element_type);
3658 /* make sure size_node is calculated */
3659 get_type_size(type);
3660 ir_node *elems = type->array.size_node;
3661 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3663 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3664 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3667 /* initializers are not allowed for VLAs */
3668 assert(declaration->init.initializer == NULL);
3670 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3671 declaration->v.vla_base = addr;
3673 /* TODO: record VLA somewhere so we create the free node when we leave
3678 * Creates a Firm local variable from a declaration.
3680 static void create_local_variable(declaration_t *declaration)
3682 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3684 bool needs_entity = declaration->address_taken;
3685 type_t *type = skip_typeref(declaration->type);
3687 /* is it a variable length array? */
3688 if(is_type_array(type) && !type->array.size_constant) {
3689 create_variable_length_array(declaration);
3691 } else if(is_type_array(type) || is_type_compound(type)) {
3692 needs_entity = true;
3693 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3694 needs_entity = true;
3698 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3699 create_declaration_entity(declaration,
3700 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3703 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3704 declaration->v.value_number = next_value_number_function;
3705 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3706 ++next_value_number_function;
3710 static void create_local_static_variable(declaration_t *declaration)
3712 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3714 type_t *const type = skip_typeref(declaration->type);
3715 ir_type *const global_type = get_glob_type();
3716 ir_type *const irtype = get_ir_type(type);
3717 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3719 size_t l = strlen(declaration->symbol->string);
3720 char buf[l + sizeof(".%u")];
3721 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3722 ident *const id = id_unique(buf);
3724 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3726 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3727 set_entity_volatility(entity, volatility_is_volatile);
3730 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3731 declaration->v.entity = entity;
3732 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3733 set_entity_variability(entity, variability_uninitialized);
3734 set_entity_visibility(entity, visibility_local);
3735 set_entity_allocation(entity, allocation_static);
3737 ir_graph *const old_current_ir_graph = current_ir_graph;
3738 current_ir_graph = get_const_code_irg();
3740 create_declaration_initializer(declaration);
3742 assert(current_ir_graph == get_const_code_irg());
3743 current_ir_graph = old_current_ir_graph;
3748 static void return_statement_to_firm(return_statement_t *statement)
3750 if(get_cur_block() == NULL)
3753 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3754 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3759 if(get_method_n_ress(func_irtype) > 0) {
3760 ir_type *res_type = get_method_res_type(func_irtype, 0);
3762 if(statement->value != NULL) {
3763 ir_node *node = expression_to_firm(statement->value);
3764 node = do_strict_conv(dbgi, node);
3768 if(is_compound_type(res_type)) {
3771 mode = get_type_mode(res_type);
3773 in[0] = new_Unknown(mode);
3777 /* build return_value for its side effects */
3778 if(statement->value != NULL) {
3779 expression_to_firm(statement->value);
3784 ir_node *store = get_store();
3785 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3787 ir_node *end_block = get_irg_end_block(current_ir_graph);
3788 add_immBlock_pred(end_block, ret);
3790 set_cur_block(NULL);
3793 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3795 if(get_cur_block() == NULL)
3798 return expression_to_firm(statement->expression);
3801 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3803 declaration_t *declaration = compound->scope.declarations;
3804 for( ; declaration != NULL; declaration = declaration->next) {
3805 create_local_declaration(declaration);
3808 ir_node *result = NULL;
3809 statement_t *statement = compound->statements;
3810 for( ; statement != NULL; statement = statement->base.next) {
3811 if(statement->base.next == NULL
3812 && statement->kind == STATEMENT_EXPRESSION) {
3813 result = expression_statement_to_firm(
3814 &statement->expression);
3817 statement_to_firm(statement);
3823 static void create_global_variable(declaration_t *declaration)
3827 switch ((storage_class_tag_t)declaration->storage_class) {
3828 case STORAGE_CLASS_STATIC:
3829 vis = visibility_local;
3832 case STORAGE_CLASS_EXTERN:
3833 vis = visibility_external_allocated;
3836 case STORAGE_CLASS_NONE:
3837 vis = visibility_external_visible;
3840 case STORAGE_CLASS_THREAD:
3841 vis = visibility_external_visible;
3844 case STORAGE_CLASS_THREAD_EXTERN:
3845 vis = visibility_external_allocated;
3848 case STORAGE_CLASS_THREAD_STATIC:
3849 vis = visibility_local;
3853 var_type = get_tls_type();
3857 var_type = get_glob_type();
3861 create_declaration_entity(declaration,
3862 DECLARATION_KIND_GLOBAL_VARIABLE,
3864 set_entity_visibility(declaration->v.entity, vis);
3868 case STORAGE_CLASS_TYPEDEF:
3869 case STORAGE_CLASS_AUTO:
3870 case STORAGE_CLASS_REGISTER:
3871 case STORAGE_CLASS_ENUM_ENTRY:
3874 panic("Invalid storage class for global variable");
3877 static void create_local_declaration(declaration_t *declaration)
3879 if (declaration->namespc != NAMESPACE_NORMAL)
3881 /* construct type */
3882 (void) get_ir_type(declaration->type);
3883 if (declaration->symbol == NULL) {
3887 type_t *type = skip_typeref(declaration->type);
3889 switch ((storage_class_tag_t) declaration->storage_class) {
3890 case STORAGE_CLASS_STATIC:
3891 create_local_static_variable(declaration);
3893 case STORAGE_CLASS_EXTERN:
3894 create_global_variable(declaration);
3895 create_declaration_initializer(declaration);
3897 case STORAGE_CLASS_NONE:
3898 case STORAGE_CLASS_AUTO:
3899 case STORAGE_CLASS_REGISTER:
3900 if(is_type_function(type)) {
3901 if(declaration->init.statement != NULL) {
3902 panic("nested functions not supported yet");
3904 get_function_entity(declaration);
3907 create_local_variable(declaration);
3910 case STORAGE_CLASS_ENUM_ENTRY:
3911 /* should already be handled */
3912 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
3914 case STORAGE_CLASS_TYPEDEF:
3915 declaration->declaration_kind = DECLARATION_KIND_TYPE;
3917 case STORAGE_CLASS_THREAD:
3918 case STORAGE_CLASS_THREAD_EXTERN:
3919 case STORAGE_CLASS_THREAD_STATIC:
3922 panic("invalid storage class found");
3925 static void initialize_local_declaration(declaration_t *declaration)
3927 if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
3930 switch ((declaration_kind_t) declaration->declaration_kind) {
3931 case DECLARATION_KIND_LOCAL_VARIABLE:
3932 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
3933 create_declaration_initializer(declaration);
3936 case DECLARATION_KIND_LABEL_BLOCK:
3937 case DECLARATION_KIND_COMPOUND_MEMBER:
3938 case DECLARATION_KIND_GLOBAL_VARIABLE:
3939 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
3940 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
3941 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
3942 case DECLARATION_KIND_FUNCTION:
3943 case DECLARATION_KIND_TYPE:
3944 case DECLARATION_KIND_ENUM_ENTRY:
3947 case DECLARATION_KIND_UNKNOWN:
3948 panic("can't initialize unknwon declaration");
3950 panic("invalid declaration kind");
3953 static void declaration_statement_to_firm(declaration_statement_t *statement)
3955 declaration_t *declaration = statement->declarations_begin;
3956 declaration_t *end = statement->declarations_end->next;
3957 for( ; declaration != end; declaration = declaration->next) {
3958 if(declaration->namespc != NAMESPACE_NORMAL)
3960 initialize_local_declaration(declaration);
3964 static void if_statement_to_firm(if_statement_t *statement)
3966 ir_node *cur_block = get_cur_block();
3968 ir_node *fallthrough_block = new_immBlock();
3970 /* the true (blocks) */
3971 ir_node *true_block;
3972 if (statement->true_statement != NULL) {
3973 true_block = new_immBlock();
3974 statement_to_firm(statement->true_statement);
3975 if(get_cur_block() != NULL) {
3976 ir_node *jmp = new_Jmp();
3977 add_immBlock_pred(fallthrough_block, jmp);
3980 true_block = fallthrough_block;
3983 /* the false (blocks) */
3984 ir_node *false_block;
3985 if(statement->false_statement != NULL) {
3986 false_block = new_immBlock();
3988 statement_to_firm(statement->false_statement);
3989 if(get_cur_block() != NULL) {
3990 ir_node *jmp = new_Jmp();
3991 add_immBlock_pred(fallthrough_block, jmp);
3994 false_block = fallthrough_block;
3997 /* create the condition */
3998 if(cur_block != NULL) {
3999 set_cur_block(cur_block);
4000 create_condition_evaluation(statement->condition, true_block,
4004 mature_immBlock(true_block);
4005 if(false_block != fallthrough_block) {
4006 mature_immBlock(false_block);
4008 mature_immBlock(fallthrough_block);
4010 set_cur_block(fallthrough_block);
4013 static void while_statement_to_firm(while_statement_t *statement)
4015 ir_node *jmp = NULL;
4016 if(get_cur_block() != NULL) {
4020 /* create the header block */
4021 ir_node *header_block = new_immBlock();
4023 add_immBlock_pred(header_block, jmp);
4026 /* the false block */
4027 ir_node *false_block = new_immBlock();
4030 ir_node *body_block;
4031 if (statement->body != NULL) {
4032 ir_node *old_continue_label = continue_label;
4033 ir_node *old_break_label = break_label;
4034 continue_label = header_block;
4035 break_label = false_block;
4037 body_block = new_immBlock();
4038 statement_to_firm(statement->body);
4040 assert(continue_label == header_block);
4041 assert(break_label == false_block);
4042 continue_label = old_continue_label;
4043 break_label = old_break_label;
4045 if(get_cur_block() != NULL) {
4047 add_immBlock_pred(header_block, jmp);
4050 body_block = header_block;
4053 /* create the condition */
4054 set_cur_block(header_block);
4056 create_condition_evaluation(statement->condition, body_block, false_block);
4057 mature_immBlock(body_block);
4058 mature_immBlock(false_block);
4059 mature_immBlock(header_block);
4061 set_cur_block(false_block);
4064 static void do_while_statement_to_firm(do_while_statement_t *statement)
4066 ir_node *jmp = NULL;
4067 if(get_cur_block() != NULL) {
4071 /* create the header block */
4072 ir_node *header_block = new_immBlock();
4074 /* the false block */
4075 ir_node *false_block = new_immBlock();
4078 ir_node *body_block = new_immBlock();
4080 add_immBlock_pred(body_block, jmp);
4083 if (statement->body != NULL) {
4084 ir_node *old_continue_label = continue_label;
4085 ir_node *old_break_label = break_label;
4086 continue_label = header_block;
4087 break_label = false_block;
4089 statement_to_firm(statement->body);
4091 assert(continue_label == header_block);
4092 assert(break_label == false_block);
4093 continue_label = old_continue_label;
4094 break_label = old_break_label;
4096 if (get_cur_block() == NULL) {
4097 mature_immBlock(header_block);
4098 mature_immBlock(body_block);
4099 mature_immBlock(false_block);
4104 ir_node *body_jmp = new_Jmp();
4105 add_immBlock_pred(header_block, body_jmp);
4106 mature_immBlock(header_block);
4108 /* create the condition */
4109 set_cur_block(header_block);
4111 create_condition_evaluation(statement->condition, body_block, false_block);
4112 mature_immBlock(body_block);
4113 mature_immBlock(false_block);
4114 mature_immBlock(header_block);
4116 set_cur_block(false_block);
4119 static void for_statement_to_firm(for_statement_t *statement)
4121 ir_node *jmp = NULL;
4123 /* create declarations */
4124 declaration_t *declaration = statement->scope.declarations;
4125 for( ; declaration != NULL; declaration = declaration->next) {
4126 create_local_declaration(declaration);
4128 declaration = statement->scope.declarations;
4129 for( ; declaration != NULL; declaration = declaration->next) {
4130 initialize_local_declaration(declaration);
4133 if (get_cur_block() != NULL) {
4134 if(statement->initialisation != NULL) {
4135 expression_to_firm(statement->initialisation);
4142 /* create the step block */
4143 ir_node *const step_block = new_immBlock();
4144 if (statement->step != NULL) {
4145 expression_to_firm(statement->step);
4147 ir_node *const step_jmp = new_Jmp();
4149 /* create the header block */
4150 ir_node *const header_block = new_immBlock();
4152 add_immBlock_pred(header_block, jmp);
4154 add_immBlock_pred(header_block, step_jmp);
4156 /* the false block */
4157 ir_node *const false_block = new_immBlock();
4160 ir_node * body_block;
4161 if (statement->body != NULL) {
4162 ir_node *const old_continue_label = continue_label;
4163 ir_node *const old_break_label = break_label;
4164 continue_label = step_block;
4165 break_label = false_block;
4167 body_block = new_immBlock();
4168 statement_to_firm(statement->body);
4170 assert(continue_label == step_block);
4171 assert(break_label == false_block);
4172 continue_label = old_continue_label;
4173 break_label = old_break_label;
4175 if (get_cur_block() != NULL) {
4177 add_immBlock_pred(step_block, jmp);
4180 body_block = step_block;
4183 /* create the condition */
4184 set_cur_block(header_block);
4185 if (statement->condition != NULL) {
4186 create_condition_evaluation(statement->condition, body_block,
4189 keep_alive(header_block);
4191 add_immBlock_pred(body_block, jmp);
4194 mature_immBlock(body_block);
4195 mature_immBlock(false_block);
4196 mature_immBlock(step_block);
4197 mature_immBlock(header_block);
4198 mature_immBlock(false_block);
4200 set_cur_block(false_block);
4203 static void create_jump_statement(const statement_t *statement,
4204 ir_node *target_block)
4206 if(get_cur_block() == NULL)
4209 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4210 ir_node *jump = new_d_Jmp(dbgi);
4211 add_immBlock_pred(target_block, jump);
4213 set_cur_block(NULL);
4216 static void switch_statement_to_firm(const switch_statement_t *statement)
4218 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4220 ir_node *expression = expression_to_firm(statement->expression);
4221 ir_node *cond = new_d_Cond(dbgi, expression);
4222 ir_node *break_block = new_immBlock();
4224 set_cur_block(NULL);
4226 ir_node *const old_switch_cond = current_switch_cond;
4227 ir_node *const old_break_label = break_label;
4228 const bool old_saw_default_label = saw_default_label;
4229 saw_default_label = false;
4230 current_switch_cond = cond;
4231 break_label = break_block;
4233 if (statement->body != NULL) {
4234 statement_to_firm(statement->body);
4237 if(get_cur_block() != NULL) {
4238 ir_node *jmp = new_Jmp();
4239 add_immBlock_pred(break_block, jmp);
4242 if (!saw_default_label) {
4243 set_cur_block(get_nodes_block(cond));
4244 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4245 MAGIC_DEFAULT_PN_NUMBER);
4246 add_immBlock_pred(break_block, proj);
4249 assert(current_switch_cond == cond);
4250 assert(break_label == break_block);
4251 current_switch_cond = old_switch_cond;
4252 break_label = old_break_label;
4253 saw_default_label = old_saw_default_label;
4255 mature_immBlock(break_block);
4256 set_cur_block(break_block);
4259 static void case_label_to_firm(const case_label_statement_t *statement)
4261 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4263 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4265 /* let's create a node and hope firm constant folding creates a Const
4268 ir_node *old_block = get_nodes_block(current_switch_cond);
4269 ir_node *block = new_immBlock();
4271 set_cur_block(old_block);
4272 if(statement->expression != NULL) {
4273 long start_pn = fold_constant(statement->expression);
4274 long end_pn = start_pn;
4275 if (statement->end_range != NULL) {
4276 end_pn = fold_constant(statement->end_range);
4278 assert(start_pn <= end_pn);
4279 /* create jumps for all cases in the given range */
4280 for (long pn = start_pn; pn <= end_pn; ++pn) {
4281 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4282 /* oops someone detected our cheating... */
4283 panic("magic default pn used");
4285 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4286 add_immBlock_pred(block, proj);
4289 saw_default_label = true;
4290 proj = new_d_defaultProj(dbgi, current_switch_cond,
4291 MAGIC_DEFAULT_PN_NUMBER);
4293 add_immBlock_pred(block, proj);
4296 if (fallthrough != NULL) {
4297 add_immBlock_pred(block, fallthrough);
4299 mature_immBlock(block);
4300 set_cur_block(block);
4302 if(statement->statement != NULL) {
4303 statement_to_firm(statement->statement);
4307 static ir_node *get_label_block(declaration_t *label)
4309 assert(label->namespc == NAMESPACE_LABEL);
4311 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4312 return label->v.block;
4314 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4316 ir_node *old_cur_block = get_cur_block();
4317 ir_node *block = new_immBlock();
4318 set_cur_block(old_cur_block);
4320 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4321 label->v.block = block;
4323 ARR_APP1(ir_node *, imature_blocks, block);
4328 static void label_to_firm(const label_statement_t *statement)
4330 ir_node *block = get_label_block(statement->label);
4332 if(get_cur_block() != NULL) {
4333 ir_node *jmp = new_Jmp();
4334 add_immBlock_pred(block, jmp);
4337 set_cur_block(block);
4340 if(statement->statement != NULL) {
4341 statement_to_firm(statement->statement);
4345 static void goto_to_firm(const goto_statement_t *statement)
4347 if(get_cur_block() == NULL)
4350 ir_node *block = get_label_block(statement->label);
4351 ir_node *jmp = new_Jmp();
4352 add_immBlock_pred(block, jmp);
4354 set_cur_block(NULL);
4357 typedef enum modifier_t {
4358 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4359 ASM_MODIFIER_READ_WRITE = 1 << 1,
4360 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4361 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4364 static void asm_statement_to_firm(const asm_statement_t *statement)
4367 fprintf(stderr, "WARNING asm not implemented yet!\n");
4369 bool needs_memory = false;
4371 size_t n_clobbers = 0;
4372 asm_clobber_t *clobber = statement->clobbers;
4373 for( ; clobber != NULL; clobber = clobber->next) {
4374 if(strcmp(clobber->clobber, "memory") == 0) {
4375 needs_memory = true;
4379 ident *id = new_id_from_str(clobber->clobber);
4380 obstack_ptr_grow(&asm_obst, id);
4383 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4384 ident **clobbers = NULL;
4385 if(n_clobbers > 0) {
4386 clobbers = obstack_finish(&asm_obst);
4389 /* find and count input and output constraints */
4390 asm_constraint_t *constraint = statement->inputs;
4391 for( ; constraint != NULL; constraint = constraint->next) {
4393 bool supports_memop = false;
4394 for(const char *c = constraint->constraints; *c != 0; ++c) {
4395 /* TODO: improve error messages */
4399 panic("multiple alternative assembler constraints not "
4407 supports_memop = true;
4408 obstack_1grow(&asm_obst, *c);
4411 if(modifiers & ASM_MODIFIER_READ_WRITE)
4412 panic("inconsistent register constraints");
4413 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4416 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4417 panic("inconsistent register constraints");
4418 modifiers |= ASM_MODIFIER_READ_WRITE;
4421 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4422 panic("early clobber assembler constraint not supported yet");
4425 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4426 panic("commutative assembler constraint not supported yet");
4429 /* skip register preferences stuff... */
4430 while(*c != 0 && *c != ',')
4434 /* skip register preferences stuff... */
4438 obstack_1grow(&asm_obst, *c);
4442 obstack_1grow(&asm_obst, '\0');
4443 const char *constraint_string = obstack_finish(&asm_obst);
4445 needs_memory |= supports_memop;
4446 if(supports_memop) {
4453 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4454 statement_to_firm(statement->try_statement);
4455 warningf(&statement->base.source_position, "structured exception handling ignored");
4458 static void leave_statement_to_firm(leave_statement_t *statement) {
4459 errorf(&statement->base.source_position, "__leave not supported yet");
4462 static void statement_to_firm(statement_t *statement)
4464 switch(statement->kind) {
4465 case STATEMENT_INVALID:
4466 panic("invalid statement found");
4468 case STATEMENT_EMPTY:
4471 case STATEMENT_COMPOUND:
4472 compound_statement_to_firm(&statement->compound);
4474 case STATEMENT_RETURN:
4475 return_statement_to_firm(&statement->returns);
4477 case STATEMENT_EXPRESSION:
4478 expression_statement_to_firm(&statement->expression);
4481 if_statement_to_firm(&statement->ifs);
4483 case STATEMENT_WHILE:
4484 while_statement_to_firm(&statement->whiles);
4486 case STATEMENT_DO_WHILE:
4487 do_while_statement_to_firm(&statement->do_while);
4489 case STATEMENT_DECLARATION:
4490 declaration_statement_to_firm(&statement->declaration);
4492 case STATEMENT_BREAK:
4493 create_jump_statement(statement, break_label);
4495 case STATEMENT_CONTINUE:
4496 create_jump_statement(statement, continue_label);
4498 case STATEMENT_SWITCH:
4499 switch_statement_to_firm(&statement->switchs);
4501 case STATEMENT_CASE_LABEL:
4502 case_label_to_firm(&statement->case_label);
4505 for_statement_to_firm(&statement->fors);
4507 case STATEMENT_LABEL:
4508 label_to_firm(&statement->label);
4510 case STATEMENT_GOTO:
4511 goto_to_firm(&statement->gotos);
4514 asm_statement_to_firm(&statement->asms);
4516 case STATEMENT_MS_TRY:
4517 ms_try_statement_to_firm(&statement->ms_try);
4519 case STATEMENT_LEAVE:
4520 leave_statement_to_firm(&statement->leave);
4523 panic("Statement not implemented\n");
4526 static int count_decls_in_expression(const expression_t *expression);
4528 static int count_local_declarations(const declaration_t * decl,
4529 const declaration_t *const end)
4532 for (; decl != end; decl = decl->next) {
4533 if(decl->namespc != NAMESPACE_NORMAL)
4535 const type_t *type = skip_typeref(decl->type);
4536 if (!decl->address_taken && is_type_scalar(type))
4538 const initializer_t *initializer = decl->init.initializer;
4539 /* FIXME: should walk initializer hierarchies... */
4540 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4541 count += count_decls_in_expression(initializer->value.value);
4547 static int count_decls_in_expression(const expression_t *expression) {
4550 if(expression == NULL)
4553 switch((expression_kind_t) expression->base.kind) {
4554 case EXPR_STATEMENT:
4555 return count_decls_in_stmts(expression->statement.statement);
4557 int count_left = count_decls_in_expression(expression->binary.left);
4558 int count_right = count_decls_in_expression(expression->binary.right);
4559 return count_left + count_right;
4562 return count_decls_in_expression(expression->unary.value);
4564 call_argument_t *argument = expression->call.arguments;
4565 for( ; argument != NULL; argument = argument->next) {
4566 count += count_decls_in_expression(argument->expression);
4573 panic("unexpected expression kind");
4575 case EXPR_COMPOUND_LITERAL:
4579 case EXPR_CONDITIONAL:
4580 count += count_decls_in_expression(expression->conditional.condition);
4581 count += count_decls_in_expression(expression->conditional.true_expression);
4582 count += count_decls_in_expression(expression->conditional.false_expression);
4585 case EXPR_BUILTIN_PREFETCH:
4586 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4587 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4588 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4591 case EXPR_BUILTIN_CONSTANT_P:
4592 count += count_decls_in_expression(expression->builtin_constant.value);
4596 count += count_decls_in_expression(expression->select.compound);
4599 case EXPR_ARRAY_ACCESS:
4600 count += count_decls_in_expression(expression->array_access.array_ref);
4601 count += count_decls_in_expression(expression->array_access.index);
4604 case EXPR_CLASSIFY_TYPE:
4605 count += count_decls_in_expression(expression->classify_type.type_expression);
4609 case EXPR_ALIGNOF: {
4610 expression_t *tp_expression = expression->typeprop.tp_expression;
4611 if (tp_expression != NULL) {
4612 count += count_decls_in_expression(tp_expression);
4618 case EXPR_REFERENCE:
4620 case EXPR_CHARACTER_CONSTANT:
4621 case EXPR_WIDE_CHARACTER_CONSTANT:
4622 case EXPR_STRING_LITERAL:
4623 case EXPR_WIDE_STRING_LITERAL:
4625 case EXPR_BUILTIN_SYMBOL:
4631 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4632 * (or implement all the missing expressions here/implement a walker)
4638 static int count_decls_in_stmts(const statement_t *stmt)
4641 for (; stmt != NULL; stmt = stmt->base.next) {
4642 switch (stmt->kind) {
4643 case STATEMENT_EMPTY:
4646 case STATEMENT_DECLARATION: {
4647 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4648 count += count_local_declarations(decl_stmt->declarations_begin,
4649 decl_stmt->declarations_end->next);
4653 case STATEMENT_COMPOUND: {
4654 const compound_statement_t *const comp =
4656 count += count_decls_in_stmts(comp->statements);
4660 case STATEMENT_IF: {
4661 const if_statement_t *const if_stmt = &stmt->ifs;
4662 count += count_decls_in_expression(if_stmt->condition);
4663 count += count_decls_in_stmts(if_stmt->true_statement);
4664 count += count_decls_in_stmts(if_stmt->false_statement);
4668 case STATEMENT_SWITCH: {
4669 const switch_statement_t *const switch_stmt = &stmt->switchs;
4670 count += count_decls_in_expression(switch_stmt->expression);
4671 count += count_decls_in_stmts(switch_stmt->body);
4675 case STATEMENT_LABEL: {
4676 const label_statement_t *const label_stmt = &stmt->label;
4677 if(label_stmt->statement != NULL) {
4678 count += count_decls_in_stmts(label_stmt->statement);
4683 case STATEMENT_WHILE: {
4684 const while_statement_t *const while_stmt = &stmt->whiles;
4685 count += count_decls_in_expression(while_stmt->condition);
4686 count += count_decls_in_stmts(while_stmt->body);
4690 case STATEMENT_DO_WHILE: {
4691 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4692 count += count_decls_in_expression(do_while_stmt->condition);
4693 count += count_decls_in_stmts(do_while_stmt->body);
4697 case STATEMENT_FOR: {
4698 const for_statement_t *const for_stmt = &stmt->fors;
4699 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4700 count += count_decls_in_expression(for_stmt->initialisation);
4701 count += count_decls_in_expression(for_stmt->condition);
4702 count += count_decls_in_expression(for_stmt->step);
4703 count += count_decls_in_stmts(for_stmt->body);
4707 case STATEMENT_CASE_LABEL: {
4708 const case_label_statement_t *label = &stmt->case_label;
4709 count += count_decls_in_expression(label->expression);
4710 if(label->statement != NULL) {
4711 count += count_decls_in_stmts(label->statement);
4717 case STATEMENT_BREAK:
4718 case STATEMENT_CONTINUE:
4721 case STATEMENT_EXPRESSION: {
4722 const expression_statement_t *expr_stmt = &stmt->expression;
4723 count += count_decls_in_expression(expr_stmt->expression);
4727 case STATEMENT_GOTO:
4728 case STATEMENT_LEAVE:
4729 case STATEMENT_INVALID:
4732 case STATEMENT_RETURN: {
4733 const return_statement_t *ret_stmt = &stmt->returns;
4734 count += count_decls_in_expression(ret_stmt->value);
4738 case STATEMENT_MS_TRY: {
4739 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4740 count += count_decls_in_stmts(try_stmt->try_statement);
4741 if(try_stmt->except_expression != NULL)
4742 count += count_decls_in_expression(try_stmt->except_expression);
4743 count += count_decls_in_stmts(try_stmt->final_statement);
4751 static int get_function_n_local_vars(declaration_t *declaration)
4755 /* count parameters */
4756 count += count_local_declarations(declaration->scope.declarations, NULL);
4758 /* count local variables declared in body */
4759 count += count_decls_in_stmts(declaration->init.statement);
4764 static void initialize_function_parameters(declaration_t *declaration)
4766 ir_graph *irg = current_ir_graph;
4767 ir_node *args = get_irg_args(irg);
4768 ir_node *start_block = get_irg_start_block(irg);
4769 ir_type *function_irtype = get_ir_type(declaration->type);
4772 declaration_t *parameter = declaration->scope.declarations;
4773 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4774 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4775 type_t *type = skip_typeref(parameter->type);
4777 bool needs_entity = parameter->address_taken;
4778 assert(!is_type_array(type));
4779 if(is_type_compound(type)) {
4780 needs_entity = true;
4784 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4785 ident *id = new_id_from_str(parameter->symbol->string);
4786 set_entity_ident(entity, id);
4788 parameter->declaration_kind
4789 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4790 parameter->v.entity = entity;
4794 ir_mode *mode = get_ir_mode(parameter->type);
4796 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4798 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4799 parameter->v.value_number = next_value_number_function;
4800 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4801 ++next_value_number_function;
4803 set_value(parameter->v.value_number, proj);
4808 * Handle additional decl modifiers for IR-graphs
4810 * @param irg the IR-graph
4811 * @param dec_modifiers additional modifiers
4813 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4815 if (decl_modifiers & DM_NORETURN) {
4816 /* TRUE if the declaration includes the Microsoft
4817 __declspec(noreturn) specifier. */
4818 set_irg_additional_property(irg, mtp_property_noreturn);
4820 if (decl_modifiers & DM_NOTHROW) {
4821 /* TRUE if the declaration includes the Microsoft
4822 __declspec(nothrow) specifier. */
4823 set_irg_additional_property(irg, mtp_property_nothrow);
4825 if (decl_modifiers & DM_NAKED) {
4826 /* TRUE if the declaration includes the Microsoft
4827 __declspec(naked) specifier. */
4828 set_irg_additional_property(irg, mtp_property_naked);
4830 if (decl_modifiers & DM_FORCEINLINE) {
4831 /* TRUE if the declaration includes the
4832 Microsoft __forceinline specifier. */
4833 set_irg_inline_property(irg, irg_inline_forced);
4835 if (decl_modifiers & DM_NOINLINE) {
4836 /* TRUE if the declaration includes the Microsoft
4837 __declspec(noinline) specifier. */
4838 set_irg_inline_property(irg, irg_inline_forbidden);
4842 static void create_function(declaration_t *declaration)
4844 ir_entity *function_entity = get_function_entity(declaration);
4846 if(declaration->init.statement == NULL)
4849 current_function_decl = declaration;
4850 current_function_name = NULL;
4851 current_funcsig = NULL;
4853 assert(imature_blocks == NULL);
4854 imature_blocks = NEW_ARR_F(ir_node*, 0);
4856 int n_local_vars = get_function_n_local_vars(declaration);
4857 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4859 set_irg_fp_model(irg, firm_opt.fp_model);
4860 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4861 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4863 ir_node *first_block = get_cur_block();
4865 /* set inline flags */
4866 if (declaration->is_inline)
4867 set_irg_inline_property(irg, irg_inline_recomended);
4868 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4870 next_value_number_function = 0;
4871 initialize_function_parameters(declaration);
4873 statement_to_firm(declaration->init.statement);
4875 ir_node *end_block = get_irg_end_block(irg);
4877 /* do we have a return statement yet? */
4878 if(get_cur_block() != NULL) {
4879 type_t *type = skip_typeref(declaration->type);
4880 assert(is_type_function(type));
4881 const function_type_t *func_type = &type->function;
4882 const type_t *return_type
4883 = skip_typeref(func_type->return_type);
4886 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4887 ret = new_Return(get_store(), 0, NULL);
4890 if(is_type_scalar(return_type)) {
4891 mode = get_ir_mode(func_type->return_type);
4897 /* ยง5.1.2.2.3 main implicitly returns 0 */
4898 if (strcmp(declaration->symbol->string, "main") == 0) {
4899 in[0] = new_Const(mode, get_mode_null(mode));
4901 in[0] = new_Unknown(mode);
4903 ret = new_Return(get_store(), 1, in);
4905 add_immBlock_pred(end_block, ret);
4908 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4909 mature_immBlock(imature_blocks[i]);
4911 DEL_ARR_F(imature_blocks);
4912 imature_blocks = NULL;
4914 mature_immBlock(first_block);
4915 mature_immBlock(end_block);
4917 irg_finalize_cons(irg);
4919 /* finalize the frame type */
4920 ir_type *frame_type = get_irg_frame_type(irg);
4921 int n = get_compound_n_members(frame_type);
4924 for(int i = 0; i < n; ++i) {
4925 ir_entity *entity = get_compound_member(frame_type, i);
4926 ir_type *entity_type = get_entity_type(entity);
4928 int align = get_type_alignment_bytes(entity_type);
4929 if(align > align_all)
4933 misalign = offset % align;
4935 offset += align - misalign;
4939 set_entity_offset(entity, offset);
4940 offset += get_type_size_bytes(entity_type);
4942 set_type_size_bytes(frame_type, offset);
4943 set_type_alignment_bytes(frame_type, align_all);
4948 static void scope_to_firm(scope_t *scope)
4950 /* first pass: create declarations */
4951 declaration_t *declaration = scope->declarations;
4952 for( ; declaration != NULL; declaration = declaration->next) {
4953 if(declaration->namespc != NAMESPACE_NORMAL)
4955 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4956 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4958 if(declaration->symbol == NULL)
4961 type_t *type = skip_typeref(declaration->type);
4962 if(is_type_function(type)) {
4963 get_function_entity(declaration);
4965 create_global_variable(declaration);
4969 /* second pass: create code/initializers */
4970 declaration = scope->declarations;
4971 for( ; declaration != NULL; declaration = declaration->next) {
4972 if(declaration->namespc != NAMESPACE_NORMAL)
4974 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4975 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4977 if(declaration->symbol == NULL)
4980 type_t *type = declaration->type;
4981 if(type->kind == TYPE_FUNCTION) {
4982 create_function(declaration);
4984 assert(declaration->declaration_kind
4985 == DECLARATION_KIND_GLOBAL_VARIABLE);
4986 current_ir_graph = get_const_code_irg();
4987 create_declaration_initializer(declaration);
4992 void init_ast2firm(void)
4994 obstack_init(&asm_obst);
4995 init_atomic_modes();
4997 id_underscore = new_id_from_chars("_", 1);
4998 id_imp = new_id_from_chars("__imp_", 6);
5000 /* OS option must be set to the backend */
5001 const char *s = "ia32-gasmode=linux";
5002 switch (firm_opt.os_support) {
5003 case OS_SUPPORT_MINGW:
5004 create_ld_ident = create_ld_ident_win32;
5005 s = "ia32-gasmode=mingw";
5007 case OS_SUPPORT_LINUX:
5008 create_ld_ident = create_ld_ident_linux_elf;
5009 s = "ia32-gasmode=linux"; break;
5011 case OS_SUPPORT_MACHO:
5012 create_ld_ident = create_ld_ident_macho;
5013 s = "ia32-gasmode=macho"; break;
5018 /* create idents for all known runtime functions */
5019 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5020 rts_idents[i] = new_id_from_str(rts_data[i].name);
5024 static void init_ir_types(void)
5026 static int ir_types_initialized = 0;
5027 if(ir_types_initialized)
5029 ir_types_initialized = 1;
5031 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5032 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5033 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5035 ir_type_int = get_ir_type(type_int);
5036 ir_type_const_char = get_ir_type(type_const_char);
5037 ir_type_wchar_t = get_ir_type(type_wchar_t);
5038 ir_type_void = get_ir_type(type_void);
5041 void exit_ast2firm(void)
5043 obstack_free(&asm_obst, NULL);
5046 void translation_unit_to_firm(translation_unit_t *unit)
5048 /* just to be sure */
5049 continue_label = NULL;
5051 current_switch_cond = NULL;
5055 scope_to_firm(&unit->scope);