2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm.h>
27 #include <libfirm/adt/obst.h>
31 #include "adt/error.h"
32 #include "adt/array.h"
38 #include "diagnostic.h"
39 #include "lang_features.h"
42 #include "driver/firm_opt.h"
43 #include "driver/firm_cmdline.h"
45 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
47 /* some idents needed for name mangling */
48 static ident *id_underscore;
51 static ir_type *ir_type_const_char;
52 static ir_type *ir_type_wchar_t;
53 static ir_type *ir_type_void;
54 static ir_type *ir_type_int;
56 static type_t *type_const_char;
58 static int next_value_number_function;
59 static ir_node *continue_label;
60 static ir_node *break_label;
61 static ir_node *current_switch_cond;
62 static bool saw_default_label;
63 static ir_node **imature_blocks;
65 static const declaration_t *current_function_decl;
66 static ir_node *current_function_name;
67 static ir_node *current_funcsig;
69 static struct obstack asm_obst;
71 typedef enum declaration_kind_t {
72 DECLARATION_KIND_UNKNOWN,
73 DECLARATION_KIND_FUNCTION,
74 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
75 DECLARATION_KIND_GLOBAL_VARIABLE,
76 DECLARATION_KIND_LOCAL_VARIABLE,
77 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
78 DECLARATION_KIND_COMPOUND_MEMBER,
79 DECLARATION_KIND_LABEL_BLOCK,
80 DECLARATION_KIND_ENUM_ENTRY,
81 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
82 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE,
86 static ir_type *get_ir_type(type_t *type);
87 static ir_type *get_ir_type_incomplete(type_t *type);
88 static int count_decls_in_stmts(const statement_t *stmt);
90 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
92 const declaration_t *declaration = get_irg_loc_description(irg, pos);
94 warningf(&declaration->source_position,
95 "variable '%#T' might be used uninitialized",
96 declaration->type, declaration->symbol);
97 return new_r_Unknown(irg, mode);
100 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
102 const source_position_t *pos = (const source_position_t*) dbg;
105 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
109 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
111 const source_position_t *pos = (const source_position_t*) dbg;
116 return pos->input_name;
119 static dbg_info *get_dbg_info(const source_position_t *pos)
121 return (dbg_info*) pos;
124 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
126 static ir_mode *mode_int, *mode_uint;
128 static ir_node *_expression_to_firm(const expression_t *expression);
129 static ir_node *expression_to_firm(const expression_t *expression);
130 static inline ir_mode *get_ir_mode(type_t *type);
131 static void create_local_declaration(declaration_t *declaration);
133 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
135 unsigned flags = get_atomic_type_flags(kind);
136 unsigned size = get_atomic_type_size(kind);
137 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
138 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
141 unsigned bit_size = size * 8;
142 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
143 ir_mode_arithmetic arithmetic;
144 unsigned modulo_shift;
146 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
147 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
148 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
149 sort = irms_int_number;
150 arithmetic = irma_twos_complement;
151 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
153 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
154 snprintf(name, sizeof(name), "f%d", bit_size);
155 sort = irms_float_number;
156 arithmetic = irma_ieee754;
159 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
167 * Initialises the atomic modes depending on the machine size.
169 static void init_atomic_modes(void)
171 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
172 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
174 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
175 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
177 /* there's no real void type in firm */
178 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
180 /* initialize pointer modes */
182 ir_mode_sort sort = irms_reference;
183 unsigned bit_size = machine_size;
185 ir_mode_arithmetic arithmetic = irma_twos_complement;
186 unsigned modulo_shift
187 = bit_size < machine_size ? machine_size : bit_size;
189 snprintf(name, sizeof(name), "p%d", machine_size);
190 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
193 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
194 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
196 /* Hmm, pointers should be machine size */
197 set_modeP_data(ptr_mode);
198 set_modeP_code(ptr_mode);
201 static unsigned get_compound_type_size(compound_type_t *type)
203 ir_type *irtype = get_ir_type((type_t*) type);
204 return get_type_size_bytes(irtype);
207 static unsigned get_array_type_size(array_type_t *type)
209 assert(!type->is_vla);
210 ir_type *irtype = get_ir_type((type_t*) type);
211 return get_type_size_bytes(irtype);
215 static unsigned get_type_size_const(type_t *type)
217 type = skip_typeref(type);
221 panic("error type occurred");
223 return get_atomic_type_size(type->atomic.akind);
225 return 2 * get_atomic_type_size(type->complex.akind);
227 return get_atomic_type_size(type->imaginary.akind);
229 return get_mode_size_bytes(mode_int);
230 case TYPE_COMPOUND_UNION:
231 case TYPE_COMPOUND_STRUCT:
232 return get_compound_type_size(&type->compound);
234 /* just a pointer to the function */
235 return get_mode_size_bytes(mode_P_code);
237 return get_mode_size_bytes(mode_P_data);
239 return get_array_type_size(&type->array);
241 return get_type_size_const(type->builtin.real_type);
243 panic("type size of bitfield request");
249 panic("Trying to determine size of invalid type");
252 static ir_node *get_type_size(type_t *type)
254 type = skip_typeref(type);
256 if(is_type_array(type) && type->array.is_vla) {
257 ir_node *size_node = type->array.size_node;
258 if(size_node == NULL) {
259 size_node = expression_to_firm(type->array.size_expression);
260 assert(!is_Const(size_node));
261 type->array.size_node = size_node;
264 ir_node *elem_size = get_type_size(type->array.element_type);
265 ir_mode *mode = get_irn_mode(size_node);
266 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
270 ir_mode *mode = get_ir_mode(type_size_t);
272 sym.type_p = get_ir_type(type);
273 return new_SymConst(mode, sym, symconst_type_size);
276 static unsigned count_parameters(const function_type_t *function_type)
280 function_parameter_t *parameter = function_type->parameters;
281 for ( ; parameter != NULL; parameter = parameter->next) {
289 * Creates a Firm type for an atomic type
291 static ir_type *create_atomic_type(const atomic_type_t *type)
293 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
294 atomic_type_kind_t kind = type->akind;
295 ir_mode *mode = _atomic_modes[kind];
296 ident *id = get_mode_ident(mode);
297 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
299 set_type_alignment_bytes(irtype, type->base.alignment);
305 * Creates a Firm type for a complex type
307 static ir_type *create_complex_type(const complex_type_t *type)
309 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
310 atomic_type_kind_t kind = type->akind;
311 ir_mode *mode = _atomic_modes[kind];
312 ident *id = get_mode_ident(mode);
317 /* FIXME: finish the array */
322 * Creates a Firm type for an imaginary type
324 static ir_type *create_imaginary_type(const imaginary_type_t *type)
326 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
327 atomic_type_kind_t kind = type->akind;
328 ir_mode *mode = _atomic_modes[kind];
329 ident *id = get_mode_ident(mode);
330 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
332 set_type_alignment_bytes(irtype, type->base.alignment);
337 static ir_type *create_method_type(const function_type_t *function_type)
339 type_t *return_type = function_type->return_type;
341 ident *id = id_unique("functiontype.%u");
342 int n_parameters = count_parameters(function_type);
343 int n_results = return_type == type_void ? 0 : 1;
344 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
345 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
347 if(return_type != type_void) {
348 ir_type *restype = get_ir_type(return_type);
349 set_method_res_type(irtype, 0, restype);
352 function_parameter_t *parameter = function_type->parameters;
354 for( ; parameter != NULL; parameter = parameter->next) {
355 ir_type *p_irtype = get_ir_type(parameter->type);
356 set_method_param_type(irtype, n, p_irtype);
360 if(function_type->variadic || function_type->unspecified_parameters) {
361 set_method_variadicity(irtype, variadicity_variadic);
367 static ir_type *create_pointer_type(pointer_type_t *type)
369 type_t *points_to = type->points_to;
370 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
371 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
372 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
373 ir_points_to, mode_P_data, dbgi);
378 static ir_type *create_array_type(array_type_t *type)
380 type_t *element_type = type->element_type;
381 ir_type *ir_element_type = get_ir_type(element_type);
383 ident *id = id_unique("array.%u");
384 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
385 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
387 const int align = get_type_alignment_bytes(ir_element_type);
388 set_type_alignment_bytes(ir_type, align);
390 if(type->size_constant) {
391 int n_elements = type->size;
393 set_array_bounds_int(ir_type, 0, 0, n_elements);
395 size_t elemsize = get_type_size_bytes(ir_element_type);
396 if(elemsize % align > 0) {
397 elemsize += align - (elemsize % align);
399 set_type_size_bytes(ir_type, n_elements * elemsize);
401 set_array_lower_bound_int(ir_type, 0, 0);
403 set_type_state(ir_type, layout_fixed);
409 * Return the signed integer type of size bits.
411 * @param size the size
413 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
416 static ir_mode *s_modes[64 + 1] = {NULL, };
420 if (size <= 0 || size > 64)
423 mode = s_modes[size];
427 snprintf(name, sizeof(name), "bf_I%u", size);
428 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
429 size <= 32 ? 32 : size );
430 s_modes[size] = mode;
434 snprintf(name, sizeof(name), "I%u", size);
435 ident *id = new_id_from_str(name);
436 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
437 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
438 set_primitive_base_type(res, base_tp);
444 * Return the unsigned integer type of size bits.
446 * @param size the size
448 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
451 static ir_mode *u_modes[64 + 1] = {NULL, };
455 if (size <= 0 || size > 64)
458 mode = u_modes[size];
462 snprintf(name, sizeof(name), "bf_U%u", size);
463 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
464 size <= 32 ? 32 : size );
465 u_modes[size] = mode;
470 snprintf(name, sizeof(name), "U%u", size);
471 ident *id = new_id_from_str(name);
472 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
473 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
474 set_primitive_base_type(res, base_tp);
479 static ir_type *create_bitfield_type(bitfield_type_t *const type)
481 type_t *base = skip_typeref(type->base_type);
482 assert(base->kind == TYPE_ATOMIC);
483 ir_type *irbase = get_ir_type(base);
485 unsigned size = fold_constant(type->size);
487 assert(!is_type_float(base));
488 if(is_type_signed(base)) {
489 return get_signed_int_type_for_bit_size(irbase, size);
491 return get_unsigned_int_type_for_bit_size(irbase, size);
495 #define INVALID_TYPE ((ir_type_ptr)-1)
498 COMPOUND_IS_STRUCT = false,
499 COMPOUND_IS_UNION = true
503 * Construct firm type from ast struct type.
505 * As anonymous inner structs get flattened to a single firm type, we might get
506 * irtype, outer_offset and out_align passed (they represent the position of
507 * the anonymous inner struct inside the resulting firm struct)
509 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
510 size_t *outer_offset, size_t *outer_align,
511 bool incomplete, bool is_union)
513 declaration_t *declaration = type->declaration;
514 declaration_kind_t kind = (declaration_kind_t)declaration->declaration_kind;
516 if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
517 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
519 return declaration->v.irtype;
521 size_t align_all = 1;
523 size_t bit_offset = 0;
527 symbol_t *symbol = declaration->symbol;
530 id = new_id_from_str(symbol->string);
533 id = id_unique("__anonymous_union.%u");
535 id = id_unique("__anonymous_struct.%u");
538 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
541 irtype = new_d_type_union(id, dbgi);
543 irtype = new_d_type_struct(id, dbgi);
546 declaration->declaration_kind
547 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
548 declaration->v.irtype = irtype;
549 //type->base.firm_type = irtype;
551 offset = *outer_offset;
552 align_all = *outer_align;
558 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
560 declaration_t *entry = declaration->scope.declarations;
561 for( ; entry != NULL; entry = entry->next) {
562 if(entry->namespc != NAMESPACE_NORMAL)
565 size_t prev_offset = offset;
567 symbol_t *symbol = entry->symbol;
568 type_t *entry_type = skip_typeref(entry->type);
569 dbg_info *dbgi = get_dbg_info(&entry->source_position);
573 ident = new_id_from_str(symbol->string);
575 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
576 create_compound_type(&entry_type->compound, irtype, &offset,
577 &align_all, false, COMPOUND_IS_STRUCT);
578 goto finished_member;
579 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
580 create_compound_type(&entry_type->compound, irtype, &offset,
581 &align_all, false, COMPOUND_IS_UNION);
582 goto finished_member;
584 assert(entry_type->kind == TYPE_BITFIELD);
586 ident = id_unique("anon.%u");
589 ir_type *base_irtype;
590 if(entry_type->kind == TYPE_BITFIELD) {
591 base_irtype = get_ir_type(entry_type->bitfield.base_type);
593 base_irtype = get_ir_type(entry_type);
596 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
597 size_t misalign = offset % entry_alignment;
599 ir_type *entry_irtype = get_ir_type(entry_type);
600 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
603 size_t bits_remainder;
604 if(entry_type->kind == TYPE_BITFIELD) {
605 size_t size_bits = fold_constant(entry_type->bitfield.size);
606 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
608 if(size_bits > rest_size_bits) {
609 /* start a new bucket */
610 offset += entry_alignment - misalign;
616 /* put into current bucket */
617 base = offset - misalign;
618 bits_remainder = misalign * 8 + bit_offset;
621 offset += size_bits / 8;
622 bit_offset = bit_offset + (size_bits % 8);
624 size_t entry_size = get_type_size_bytes(base_irtype);
625 if(misalign > 0 || bit_offset > 0)
626 offset += entry_alignment - misalign;
630 offset += entry_size;
634 if(entry_alignment > align_all) {
635 if(entry_alignment % align_all != 0) {
636 panic("uneven alignments not supported yet");
638 align_all = entry_alignment;
641 set_entity_offset(entity, base);
642 set_entity_offset_bits_remainder(entity,
643 (unsigned char) bits_remainder);
644 //add_struct_member(irtype, entity);
645 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
646 assert(entry->v.entity == NULL);
647 entry->v.entity = entity;
651 size_t entry_size = offset - prev_offset;
652 if (entry_size > size) {
664 size_t misalign = offset % align_all;
665 if(misalign > 0 || bit_offset > 0) {
666 size += align_all - misalign;
669 if(outer_offset != NULL) {
671 *outer_offset = offset;
673 *outer_offset += size;
676 if (align_all > *outer_align) {
677 if(align_all % *outer_align != 0) {
678 panic("uneven alignments not supported yet");
680 *outer_align = align_all;
683 set_type_alignment_bytes(irtype, align_all);
684 set_type_size_bytes(irtype, size);
685 set_type_state(irtype, layout_fixed);
691 static ir_type *create_enum_type(enum_type_t *const type)
693 type->base.firm_type = ir_type_int;
695 ir_mode *const mode = mode_int;
696 tarval *const one = get_mode_one(mode);
697 tarval * tv_next = get_tarval_null(mode);
699 declaration_t *declaration = type->declaration->next;
700 for (; declaration != NULL; declaration = declaration->next) {
701 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
704 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
706 expression_t *const init = declaration->init.enum_value;
708 ir_node *const cnst = expression_to_firm(init);
709 if (!is_Const(cnst)) {
710 panic("couldn't fold constant");
712 tv_next = get_Const_tarval(cnst);
714 declaration->v.enum_val = tv_next;
715 tv_next = tarval_add(tv_next, one);
721 static ir_type *get_ir_type_incomplete(type_t *type)
723 assert(type != NULL);
724 type = skip_typeref(type);
726 if (type->base.firm_type != NULL) {
727 assert(type->base.firm_type != INVALID_TYPE);
728 return type->base.firm_type;
731 switch (type->kind) {
732 case TYPE_COMPOUND_STRUCT:
733 return create_compound_type(&type->compound, NULL, NULL, NULL,
734 true, COMPOUND_IS_STRUCT);
736 case TYPE_COMPOUND_UNION:
737 return create_compound_type(&type->compound, NULL, NULL, NULL,
738 true, COMPOUND_IS_UNION);
740 return get_ir_type(type);
744 static ir_type *get_ir_type(type_t *type)
746 assert(type != NULL);
748 type = skip_typeref(type);
750 if (type->base.firm_type != NULL) {
751 assert(type->base.firm_type != INVALID_TYPE);
752 return type->base.firm_type;
755 ir_type *firm_type = NULL;
756 switch (type->kind) {
758 panic("error type occurred");
760 firm_type = create_atomic_type(&type->atomic);
763 firm_type = create_complex_type(&type->complex);
766 firm_type = create_imaginary_type(&type->imaginary);
769 firm_type = create_method_type(&type->function);
772 firm_type = create_pointer_type(&type->pointer);
775 firm_type = create_array_type(&type->array);
777 case TYPE_COMPOUND_STRUCT:
778 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
779 false, COMPOUND_IS_STRUCT);
781 case TYPE_COMPOUND_UNION:
782 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
783 false, COMPOUND_IS_UNION);
786 firm_type = create_enum_type(&type->enumt);
789 firm_type = get_ir_type(type->builtin.real_type);
792 firm_type = create_bitfield_type(&type->bitfield);
800 if(firm_type == NULL)
801 panic("unknown type found");
803 type->base.firm_type = firm_type;
807 static inline ir_mode *get_ir_mode(type_t *type)
809 ir_type *irtype = get_ir_type(type);
811 /* firm doesn't report a mode for arrays somehow... */
812 if(is_Array_type(irtype)) {
816 ir_mode *mode = get_type_mode(irtype);
817 assert(mode != NULL);
821 /** Names of the runtime functions. */
822 static const struct {
823 int id; /**< the rts id */
824 int n_res; /**< number of return values */
825 const char *name; /**< the name of the rts function */
826 int n_params; /**< number of parameters */
827 unsigned flags; /**< language flags */
829 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
830 { rts_abort, 0, "abort", 0, _C89 },
831 { rts_alloca, 1, "alloca", 1, _ALL },
832 { rts_abs, 1, "abs", 1, _C89 },
833 { rts_labs, 1, "labs", 1, _C89 },
834 { rts_llabs, 1, "llabs", 1, _C99 },
835 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
837 { rts_fabs, 1, "fabs", 1, _C89 },
838 { rts_sqrt, 1, "sqrt", 1, _C89 },
839 { rts_cbrt, 1, "cbrt", 1, _C99 },
840 { rts_exp, 1, "exp", 1, _C89 },
841 { rts_exp2, 1, "exp2", 1, _C89 },
842 { rts_exp10, 1, "exp10", 1, _GNUC },
843 { rts_log, 1, "log", 1, _C89 },
844 { rts_log2, 1, "log2", 1, _C89 },
845 { rts_log10, 1, "log10", 1, _C89 },
846 { rts_pow, 1, "pow", 2, _C89 },
847 { rts_sin, 1, "sin", 1, _C89 },
848 { rts_cos, 1, "cos", 1, _C89 },
849 { rts_tan, 1, "tan", 1, _C89 },
850 { rts_asin, 1, "asin", 1, _C89 },
851 { rts_acos, 1, "acos", 1, _C89 },
852 { rts_atan, 1, "atan", 1, _C89 },
853 { rts_sinh, 1, "sinh", 1, _C89 },
854 { rts_cosh, 1, "cosh", 1, _C89 },
855 { rts_tanh, 1, "tanh", 1, _C89 },
857 { rts_fabsf, 1, "fabsf", 1, _C99 },
858 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
859 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
860 { rts_expf, 1, "expf", 1, _C99 },
861 { rts_exp2f, 1, "exp2f", 1, _C99 },
862 { rts_exp10f, 1, "exp10f", 1, _GNUC },
863 { rts_logf, 1, "logf", 1, _C99 },
864 { rts_log2f, 1, "log2f", 1, _C99 },
865 { rts_log10f, 1, "log10f", 1, _C99 },
866 { rts_powf, 1, "powf", 2, _C99 },
867 { rts_sinf, 1, "sinf", 1, _C99 },
868 { rts_cosf, 1, "cosf", 1, _C99 },
869 { rts_tanf, 1, "tanf", 1, _C99 },
870 { rts_asinf, 1, "asinf", 1, _C99 },
871 { rts_acosf, 1, "acosf", 1, _C99 },
872 { rts_atanf, 1, "atanf", 1, _C99 },
873 { rts_sinhf, 1, "sinhf", 1, _C99 },
874 { rts_coshf, 1, "coshf", 1, _C99 },
875 { rts_tanhf, 1, "tanhf", 1, _C99 },
877 { rts_fabsl, 1, "fabsl", 1, _C99 },
878 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
879 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
880 { rts_expl, 1, "expl", 1, _C99 },
881 { rts_exp2l, 1, "exp2l", 1, _C99 },
882 { rts_exp10l, 1, "exp10l", 1, _GNUC },
883 { rts_logl, 1, "logl", 1, _C99 },
884 { rts_log2l, 1, "log2l", 1, _C99 },
885 { rts_log10l, 1, "log10l", 1, _C99 },
886 { rts_powl, 1, "powl", 2, _C99 },
887 { rts_sinl, 1, "sinl", 1, _C99 },
888 { rts_cosl, 1, "cosl", 1, _C99 },
889 { rts_tanl, 1, "tanl", 1, _C99 },
890 { rts_asinl, 1, "asinl", 1, _C99 },
891 { rts_acosl, 1, "acosl", 1, _C99 },
892 { rts_atanl, 1, "atanl", 1, _C99 },
893 { rts_sinhl, 1, "sinhl", 1, _C99 },
894 { rts_coshl, 1, "coshl", 1, _C99 },
895 { rts_tanhl, 1, "tanhl", 1, _C99 },
897 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
898 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
899 { rts_strcmp, 1, "strcmp", 2, _C89 },
900 { rts_strncmp, 1, "strncmp", 3, _C89 }
903 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
906 * Mangles an entity linker (ld) name for win32 usage.
908 * @param ent the entity to be mangled
909 * @param declaration the declaration
911 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
915 if (is_Method_type(get_entity_type(ent)))
916 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
918 /* always add an underscore in win32 */
919 id = mangle(id_underscore, get_entity_ident(ent));
922 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
923 if (decl_modifiers & DM_DLLIMPORT) {
924 /* add prefix for imported symbols */
925 id = mangle(id_imp, id);
931 * Mangles an entity linker (ld) name for Linux ELF usage.
933 * @param ent the entity to be mangled
934 * @param declaration the declaration
936 static ident *create_ld_ident_linux_elf(ir_entity *entity,
937 declaration_t *declaration)
940 return get_entity_ident(entity);
944 * Mangles an entity linker (ld) name for Mach-O usage.
946 * @param ent the entity to be mangled
947 * @param declaration the declaration
949 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
952 ident *id = mangle(id_underscore, get_entity_ident(ent));
956 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
957 declaration_t *declaration);
958 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
961 * Creates an entity representing a function.
963 * @param declaration the function declaration
965 static ir_entity *get_function_entity(declaration_t *declaration)
967 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
968 return declaration->v.entity;
969 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
971 symbol_t *symbol = declaration->symbol;
972 ident *id = new_id_from_str(symbol->string);
974 ir_type *global_type = get_glob_type();
975 ir_type *ir_type_method = get_ir_type(declaration->type);
976 assert(is_Method_type(ir_type_method));
978 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
979 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
980 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
981 if(declaration->storage_class == STORAGE_CLASS_STATIC &&
982 declaration->init.statement == NULL) {
983 /* this entity was declared, but never defined */
984 set_entity_peculiarity(entity, peculiarity_description);
986 if(declaration->storage_class == STORAGE_CLASS_STATIC
987 || declaration->is_inline) {
988 set_entity_visibility(entity, visibility_local);
989 } else if(declaration->init.statement != NULL) {
990 set_entity_visibility(entity, visibility_external_visible);
992 set_entity_visibility(entity, visibility_external_allocated);
994 set_entity_allocation(entity, allocation_static);
996 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
997 declaration->v.entity = entity;
999 /* We should check for file scope here, but as long as we compile C only
1000 this is not needed. */
1001 if (! firm_opt.freestanding) {
1002 /* check for a known runtime function */
1003 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
1004 if (id != rts_idents[i])
1007 /* ignore those rts functions not necessary needed for current mode */
1008 if ((c_mode & rts_data[i].flags) == 0)
1010 assert(rts_entities[rts_data[i].id] == NULL);
1011 rts_entities[rts_data[i].id] = entity;
1019 * Creates a Const node representing a constant.
1021 static ir_node *const_to_firm(const const_expression_t *cnst)
1023 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1024 ir_mode *mode = get_ir_mode(cnst->base.type);
1029 if(mode_is_float(mode)) {
1030 tv = new_tarval_from_double(cnst->v.float_value, mode);
1032 if(mode_is_signed(mode)) {
1033 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1035 len = snprintf(buf, sizeof(buf), "%llu",
1036 (unsigned long long) cnst->v.int_value);
1038 tv = new_tarval_from_str(buf, len, mode);
1041 return new_d_Const(dbgi, mode, tv);
1045 * Creates a Const node representing a character constant.
1047 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1049 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1050 ir_mode *mode = get_ir_mode(cnst->base.type);
1052 long long int v = 0;
1053 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1054 if (char_is_signed) {
1055 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1057 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1061 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1062 tarval *tv = new_tarval_from_str(buf, len, mode);
1064 return new_d_Const(dbgi, mode, tv);
1068 * Creates a Const node representing a wide character constant.
1070 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1072 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1073 ir_mode *mode = get_ir_mode(cnst->base.type);
1075 long long int v = cnst->v.wide_character.begin[0];
1078 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1079 tarval *tv = new_tarval_from_str(buf, len, mode);
1081 return new_d_Const(dbgi, mode, tv);
1085 * Creates a SymConst for a given entity.
1087 * @param dbgi debug info
1088 * @param mode the (reference) mode for the SymConst
1089 * @param entity the entity
1091 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1094 assert(entity != NULL);
1095 union symconst_symbol sym;
1096 sym.entity_p = entity;
1097 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1101 * Creates a SymConst node representing a string constant.
1103 * @param src_pos the source position of the string constant
1104 * @param id_prefix a prefix for the name of the generated string constant
1105 * @param value the value of the string constant
1107 static ir_node *string_to_firm(const source_position_t *const src_pos,
1108 const char *const id_prefix,
1109 const string_t *const value)
1111 ir_type *const global_type = get_glob_type();
1112 dbg_info *const dbgi = get_dbg_info(src_pos);
1113 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1114 ir_type_const_char, dbgi);
1116 ident *const id = id_unique(id_prefix);
1117 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1118 set_entity_ld_ident(entity, id);
1119 set_entity_variability(entity, variability_constant);
1120 set_entity_allocation(entity, allocation_static);
1122 ir_type *const elem_type = ir_type_const_char;
1123 ir_mode *const mode = get_type_mode(elem_type);
1125 const char* const string = value->begin;
1126 const size_t slen = value->size;
1128 set_array_lower_bound_int(type, 0, 0);
1129 set_array_upper_bound_int(type, 0, slen);
1130 set_type_size_bytes(type, slen);
1131 set_type_state(type, layout_fixed);
1133 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1134 for(size_t i = 0; i < slen; ++i) {
1135 tvs[i] = new_tarval_from_long(string[i], mode);
1138 set_array_entity_values(entity, tvs, slen);
1141 return create_symconst(dbgi, mode_P_data, entity);
1145 * Creates a SymConst node representing a string literal.
1147 * @param literal the string literal
1149 static ir_node *string_literal_to_firm(
1150 const string_literal_expression_t* literal)
1152 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1157 * Creates a SymConst node representing a wide string literal.
1159 * @param literal the wide string literal
1161 static ir_node *wide_string_literal_to_firm(
1162 const wide_string_literal_expression_t* const literal)
1164 ir_type *const global_type = get_glob_type();
1165 ir_type *const elem_type = ir_type_wchar_t;
1166 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1167 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1170 ident *const id = id_unique("Lstr.%u");
1171 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1172 set_entity_ld_ident(entity, id);
1173 set_entity_variability(entity, variability_constant);
1174 set_entity_allocation(entity, allocation_static);
1176 ir_mode *const mode = get_type_mode(elem_type);
1178 const wchar_rep_t *const string = literal->value.begin;
1179 const size_t slen = literal->value.size;
1181 set_array_lower_bound_int(type, 0, 0);
1182 set_array_upper_bound_int(type, 0, slen);
1183 set_type_size_bytes(type, slen);
1184 set_type_state(type, layout_fixed);
1186 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1187 for(size_t i = 0; i < slen; ++i) {
1188 tvs[i] = new_tarval_from_long(string[i], mode);
1191 set_array_entity_values(entity, tvs, slen);
1194 return create_symconst(dbgi, mode_P_data, entity);
1197 static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
1198 ir_node *const addr)
1200 ir_type *irtype = get_ir_type(type);
1201 if (is_compound_type(irtype)
1202 || is_Method_type(irtype)
1203 || is_Array_type(irtype)) {
1207 ir_mode *const mode = get_type_mode(irtype);
1208 ir_node *const memory = get_store();
1209 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1210 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1211 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1213 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1214 set_Load_volatility(load, volatility_is_volatile);
1217 set_store(load_mem);
1222 * Creates a strict Conv if neccessary.
1224 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1226 ir_mode *mode = get_irn_mode(node);
1228 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1230 if (!mode_is_float(mode))
1233 /* check if there is already a Conv */
1234 if (is_Conv(node)) {
1235 /* convert it into a strict Conv */
1236 set_Conv_strict(node, 1);
1240 /* otherwise create a new one */
1241 return new_d_strictConv(dbgi, node, mode);
1244 static ir_node *get_global_var_address(dbg_info *const dbgi,
1245 const declaration_t *const decl)
1247 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1249 ir_entity *const entity = decl->v.entity;
1250 switch ((storage_class_tag_t)decl->storage_class) {
1251 case STORAGE_CLASS_THREAD:
1252 case STORAGE_CLASS_THREAD_EXTERN:
1253 case STORAGE_CLASS_THREAD_STATIC: {
1254 ir_node *const no_mem = new_NoMem();
1255 ir_node *const tls = get_irg_tls(current_ir_graph);
1256 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1260 return create_symconst(dbgi, mode_P_data, entity);
1265 * Returns the correct base address depending on whether it is a parameter or a
1266 * normal local variable.
1268 static ir_node *get_local_frame(ir_entity *const ent)
1270 ir_graph *const irg = current_ir_graph;
1271 const ir_type *const owner = get_entity_owner(ent);
1272 if (owner == get_irg_frame_type(irg)) {
1273 return get_irg_frame(irg);
1275 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1276 return get_irg_value_param_base(irg);
1280 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1282 ir_mode *value_mode = get_irn_mode(value);
1284 if (value_mode == dest_mode || is_Bad(value))
1287 if(dest_mode == mode_b) {
1288 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1289 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1290 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1294 return new_d_Conv(dbgi, value, dest_mode);
1297 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1299 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1300 declaration_t *declaration = ref->declaration;
1301 type_t *type = skip_typeref(declaration->type);
1303 /* make sure the type is constructed */
1304 (void) get_ir_type(type);
1306 switch((declaration_kind_t) declaration->declaration_kind) {
1307 case DECLARATION_KIND_TYPE:
1308 case DECLARATION_KIND_UNKNOWN:
1311 case DECLARATION_KIND_ENUM_ENTRY: {
1312 ir_mode *const mode = get_ir_mode(type);
1313 return new_Const(mode, declaration->v.enum_val);
1316 case DECLARATION_KIND_LOCAL_VARIABLE: {
1317 ir_mode *const mode = get_ir_mode(type);
1318 return get_value(declaration->v.value_number, mode);
1320 case DECLARATION_KIND_FUNCTION: {
1321 ir_mode *const mode = get_ir_mode(type);
1322 return create_symconst(dbgi, mode, declaration->v.entity);
1324 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1325 ir_node *const addr = get_global_var_address(dbgi, declaration);
1326 return deref_address(dbgi, declaration->type, addr);
1329 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1330 ir_entity *entity = declaration->v.entity;
1331 ir_node *frame = get_local_frame(entity);
1332 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1333 return deref_address(dbgi, declaration->type, sel);
1336 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1337 return declaration->v.vla_base;
1339 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1340 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1341 case DECLARATION_KIND_COMPOUND_MEMBER:
1342 case DECLARATION_KIND_LABEL_BLOCK:
1343 panic("not implemented reference type");
1346 panic("reference to declaration with unknown type found");
1349 static ir_node *reference_addr(const reference_expression_t *ref)
1351 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1352 declaration_t *declaration = ref->declaration;
1354 switch((declaration_kind_t) declaration->declaration_kind) {
1355 case DECLARATION_KIND_TYPE:
1356 case DECLARATION_KIND_UNKNOWN:
1358 case DECLARATION_KIND_LOCAL_VARIABLE:
1359 /* you can store to a local variable (so we don't panic but return NULL
1360 * as an indicator for no real address) */
1362 case DECLARATION_KIND_FUNCTION: {
1363 type_t *const type = skip_typeref(ref->base.type);
1364 ir_mode *const mode = get_ir_mode(type);
1365 return create_symconst(dbgi, mode, declaration->v.entity);
1367 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1368 ir_node *const addr = get_global_var_address(dbgi, declaration);
1371 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1372 ir_entity *entity = declaration->v.entity;
1373 ir_node *frame = get_local_frame(entity);
1374 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1379 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1380 return declaration->v.vla_base;
1382 case DECLARATION_KIND_ENUM_ENTRY:
1383 panic("trying to reference enum entry");
1385 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1386 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1387 case DECLARATION_KIND_COMPOUND_MEMBER:
1388 case DECLARATION_KIND_LABEL_BLOCK:
1389 panic("not implemented reference type");
1392 panic("reference to declaration with unknown type found");
1396 * Transform calls to builtin functions.
1398 static ir_node *process_builtin_call(const call_expression_t *call)
1400 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1402 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1403 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1405 type_t *type = skip_typeref(builtin->base.type);
1406 assert(is_type_pointer(type));
1408 type_t *function_type = skip_typeref(type->pointer.points_to);
1409 symbol_t *symbol = builtin->symbol;
1411 switch(symbol->ID) {
1412 case T___builtin_alloca: {
1413 if(call->arguments == NULL || call->arguments->next != NULL) {
1414 panic("invalid number of parameters on __builtin_alloca");
1416 expression_t *argument = call->arguments->expression;
1417 ir_node *size = expression_to_firm(argument);
1419 ir_node *store = get_store();
1420 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1422 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1424 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1428 case T___builtin_huge_val: {
1429 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1430 tarval *tv = get_mode_infinite(mode);
1431 ir_node *res = new_d_Const(dbgi, mode, tv);
1434 case T___builtin_nan:
1435 case T___builtin_nanf:
1436 case T___builtin_nand: {
1437 /* Ignore string for now... */
1438 assert(is_type_function(function_type));
1439 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1440 tarval *tv = get_mode_NAN(mode);
1441 ir_node *res = new_d_Const(dbgi, mode, tv);
1444 case T___builtin_va_end:
1447 panic("Unsupported builtin found\n");
1452 * Transform a call expression.
1453 * Handles some special cases, like alloca() calls, which must be resolved BEFORE the inlines runs.
1454 * Inlining routines calling alloca() is dangerous, 176.gcc for instance might allocate 2GB instead of
1455 * 256 MB if alloca is not handled right...
1457 static ir_node *call_expression_to_firm(const call_expression_t *call)
1459 assert(get_cur_block() != NULL);
1461 expression_t *function = call->function;
1462 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1463 return process_builtin_call(call);
1465 if(function->kind == EXPR_REFERENCE) {
1466 const reference_expression_t *ref = &function->reference;
1467 declaration_t *declaration = ref->declaration;
1469 if((declaration_kind_t)declaration->declaration_kind == DECLARATION_KIND_FUNCTION) {
1470 if (declaration->v.entity == rts_entities[rts_alloca]) {
1471 /* handle alloca() call */
1472 expression_t *argument = call->arguments->expression;
1473 ir_node *size = expression_to_firm(argument);
1475 ir_node *store = get_store();
1476 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1477 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1479 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1481 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1487 ir_node *callee = expression_to_firm(function);
1489 type_t *type = skip_typeref(function->base.type);
1490 assert(is_type_pointer(type));
1491 pointer_type_t *pointer_type = &type->pointer;
1492 type_t *points_to = skip_typeref(pointer_type->points_to);
1493 assert(is_type_function(points_to));
1494 function_type_t *function_type = &points_to->function;
1496 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1498 int n_parameters = 0;
1499 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1500 ir_type *new_method_type = NULL;
1501 if(function_type->variadic || function_type->unspecified_parameters) {
1502 const call_argument_t *argument = call->arguments;
1503 for( ; argument != NULL; argument = argument->next) {
1507 /* we need to construct a new method type matching the call
1509 int n_res = get_method_n_ress(ir_method_type);
1510 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1511 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1512 n_parameters, n_res, dbgi);
1513 set_method_calling_convention(new_method_type,
1514 get_method_calling_convention(ir_method_type));
1515 set_method_additional_properties(new_method_type,
1516 get_method_additional_properties(ir_method_type));
1517 set_method_variadicity(new_method_type,
1518 get_method_variadicity(ir_method_type));
1520 for(int i = 0; i < n_res; ++i) {
1521 set_method_res_type(new_method_type, i,
1522 get_method_res_type(ir_method_type, i));
1524 argument = call->arguments;
1525 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1526 expression_t *expression = argument->expression;
1527 ir_type *irtype = get_ir_type(expression->base.type);
1528 set_method_param_type(new_method_type, i, irtype);
1530 ir_method_type = new_method_type;
1532 n_parameters = get_method_n_params(ir_method_type);
1535 ir_node *in[n_parameters];
1537 const call_argument_t *argument = call->arguments;
1538 for(int n = 0; n < n_parameters; ++n) {
1539 expression_t *expression = argument->expression;
1540 ir_node *arg_node = expression_to_firm(expression);
1542 arg_node = do_strict_conv(dbgi, arg_node);
1546 argument = argument->next;
1549 ir_node *store = get_store();
1550 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1552 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1555 type_t *return_type = skip_typeref(function_type->return_type);
1556 ir_node *result = NULL;
1558 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1560 if(is_type_scalar(return_type)) {
1561 mode = get_ir_mode(return_type);
1565 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1566 result = new_d_Proj(dbgi, resproj, mode, 0);
1572 static void statement_to_firm(statement_t *statement);
1573 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1575 static ir_node *expression_to_addr(const expression_t *expression);
1576 static void create_condition_evaluation(const expression_t *expression,
1577 ir_node *true_block,
1578 ir_node *false_block);
1580 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1583 value = do_strict_conv(dbgi, value);
1585 ir_node *memory = get_store();
1587 if(is_type_scalar(type)) {
1588 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1589 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1590 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1591 set_Store_volatility(store, volatility_is_volatile);
1592 set_store(store_mem);
1594 ir_type *irtype = get_ir_type(type);
1595 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1596 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1597 set_store(copyb_mem);
1601 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1603 tarval *all_one = get_mode_all_one(mode);
1604 int mode_size = get_mode_size_bits(mode);
1606 assert(offset >= 0 && size >= 0);
1607 assert(offset + size <= mode_size);
1608 if(size == mode_size) {
1612 long shiftr = get_mode_size_bits(mode) - size;
1613 long shiftl = offset;
1614 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1615 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1616 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1617 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1622 static void bitfield_store_to_firm(const select_expression_t *expression,
1623 ir_node *addr, ir_node *value)
1625 type_t *type = expression->base.type;
1626 ir_mode *mode = get_ir_mode(type);
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 = expression->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 ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
1670 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1671 type_t *type = expression->base.type;
1672 ir_mode *mode = get_ir_mode(type);
1673 ir_node *mem = get_store();
1674 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1675 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1676 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1678 load_res = create_conv(dbgi, load_res, mode_int);
1680 set_store(load_mem);
1682 /* kill upper bits */
1683 ir_entity *entity = expression->compound_entry->v.entity;
1684 int bitoffset = get_entity_offset_bits_remainder(entity);
1685 ir_type *entity_type = get_entity_type(entity);
1686 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1687 long shift_bitsl = machine_size - bitoffset - bitsize;
1688 assert(shift_bitsl >= 0);
1689 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1690 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1691 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1693 long shift_bitsr = bitoffset + shift_bitsl;
1694 assert(shift_bitsr <= (long) machine_size);
1695 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1696 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1698 if(mode_is_signed(mode)) {
1699 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1701 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1704 return create_conv(dbgi, shiftr, mode);
1707 static void set_value_for_expression_addr(const expression_t *expression,
1708 ir_node *value, ir_node *addr)
1710 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1711 value = do_strict_conv(dbgi, value);
1713 if (expression->kind == EXPR_REFERENCE) {
1714 const reference_expression_t *ref = &expression->reference;
1716 declaration_t *declaration = ref->declaration;
1717 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1718 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1719 set_value(declaration->v.value_number, value);
1725 addr = expression_to_addr(expression);
1727 type_t *type = skip_typeref(expression->base.type);
1729 if (expression->kind == EXPR_SELECT) {
1730 const select_expression_t *select = &expression->select;
1732 declaration_t *declaration = select->compound_entry;
1733 if (declaration->type->kind == TYPE_BITFIELD) {
1734 bitfield_store_to_firm(select, addr, value);
1739 assign_value(dbgi, addr, type, value);
1742 static void set_value_for_expression(const expression_t *expression,
1745 set_value_for_expression_addr(expression, value, NULL);
1748 static ir_node *get_value_from_lvalue(const expression_t *expression,
1751 if (expression->kind == EXPR_REFERENCE) {
1752 const reference_expression_t *ref = &expression->reference;
1754 declaration_t *declaration = ref->declaration;
1755 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1756 if (declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1757 assert(addr == NULL);
1758 ir_mode *mode = get_ir_mode(expression->base.type);
1759 return get_value(declaration->v.value_number, mode);
1763 assert(addr != NULL);
1764 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1767 if (expression->kind == EXPR_SELECT &&
1768 expression->select.compound_entry->type->kind == TYPE_BITFIELD){
1769 value = bitfield_extract_to_firm(&expression->select, addr);
1771 value = deref_address(dbgi, expression->base.type, addr);
1778 static ir_node *create_incdec(const unary_expression_t *expression)
1780 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1781 const expression_t *value_expr = expression->value;
1782 ir_node *addr = expression_to_addr(value_expr);
1783 ir_node *value = get_value_from_lvalue(value_expr, addr);
1785 type_t *type = skip_typeref(expression->base.type);
1786 ir_mode *mode = get_ir_mode(expression->base.type);
1789 if(is_type_pointer(type)) {
1790 pointer_type_t *pointer_type = &type->pointer;
1791 offset = get_type_size(pointer_type->points_to);
1793 assert(is_type_arithmetic(type));
1794 offset = new_Const(mode, get_mode_one(mode));
1798 ir_node *store_value;
1799 switch(expression->base.kind) {
1800 case EXPR_UNARY_POSTFIX_INCREMENT:
1802 store_value = new_d_Add(dbgi, value, offset, mode);
1804 case EXPR_UNARY_POSTFIX_DECREMENT:
1806 store_value = new_d_Sub(dbgi, value, offset, mode);
1808 case EXPR_UNARY_PREFIX_INCREMENT:
1809 result = new_d_Add(dbgi, value, offset, mode);
1810 store_value = result;
1812 case EXPR_UNARY_PREFIX_DECREMENT:
1813 result = new_d_Sub(dbgi, value, offset, mode);
1814 store_value = result;
1817 panic("no incdec expr in create_incdec");
1820 set_value_for_expression_addr(value_expr, store_value, addr);
1825 static bool is_local_variable(expression_t *expression)
1827 if (expression->kind != EXPR_REFERENCE)
1829 reference_expression_t *ref_expr = &expression->reference;
1830 declaration_t *declaration = ref_expr->declaration;
1831 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1834 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1837 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1838 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1839 case EXPR_BINARY_NOTEQUAL:
1840 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1841 case EXPR_BINARY_ISLESS:
1842 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1843 case EXPR_BINARY_ISLESSEQUAL:
1844 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1845 case EXPR_BINARY_ISGREATER:
1846 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1847 case EXPR_BINARY_ISGREATEREQUAL:
1848 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1849 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1854 panic("trying to get pn_Cmp from non-comparison binexpr type");
1858 * Handle the assume optimizer hint: check if a Confirm
1859 * node can be created.
1861 * @param dbi debug info
1862 * @param expr the IL assume expression
1864 * we support here only some simple cases:
1869 static ir_node *handle_assume_compare(dbg_info *dbi,
1870 const binary_expression_t *expression)
1872 expression_t *op1 = expression->left;
1873 expression_t *op2 = expression->right;
1874 declaration_t *var2, *var = NULL;
1875 ir_node *res = NULL;
1878 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1880 if (is_local_variable(op1) && is_local_variable(op2)) {
1881 var = op1->reference.declaration;
1882 var2 = op2->reference.declaration;
1884 type_t *const type = skip_typeref(var->type);
1885 ir_mode *const mode = get_ir_mode(type);
1887 ir_node *const irn1 = get_value(var->v.value_number, mode);
1888 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1890 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1891 set_value(var2->v.value_number, res);
1893 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1894 set_value(var->v.value_number, res);
1900 if (is_local_variable(op1) && is_constant_expression(op2)) {
1901 var = op1->reference.declaration;
1903 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1904 cmp_val = get_inversed_pnc(cmp_val);
1905 var = op2->reference.declaration;
1910 type_t *const type = skip_typeref(var->type);
1911 ir_mode *const mode = get_ir_mode(type);
1913 res = get_value(var->v.value_number, mode);
1914 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1915 set_value(var->v.value_number, res);
1921 * Handle the assume optimizer hint.
1923 * @param dbi debug info
1924 * @param expr the IL assume expression
1926 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1927 switch(expression->kind) {
1928 case EXPR_BINARY_EQUAL:
1929 case EXPR_BINARY_NOTEQUAL:
1930 case EXPR_BINARY_LESS:
1931 case EXPR_BINARY_LESSEQUAL:
1932 case EXPR_BINARY_GREATER:
1933 case EXPR_BINARY_GREATEREQUAL:
1934 return handle_assume_compare(dbi, &expression->binary);
1940 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1942 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1943 type_t *type = skip_typeref(expression->base.type);
1945 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1946 return expression_to_addr(expression->value);
1948 const expression_t *value = expression->value;
1950 switch(expression->base.kind) {
1951 case EXPR_UNARY_NEGATE: {
1952 ir_node *value_node = expression_to_firm(value);
1953 ir_mode *mode = get_ir_mode(type);
1954 return new_d_Minus(dbgi, value_node, mode);
1956 case EXPR_UNARY_PLUS:
1957 return expression_to_firm(value);
1958 case EXPR_UNARY_BITWISE_NEGATE: {
1959 ir_node *value_node = expression_to_firm(value);
1960 ir_mode *mode = get_ir_mode(type);
1961 return new_d_Not(dbgi, value_node, mode);
1963 case EXPR_UNARY_NOT: {
1964 ir_node *value_node = _expression_to_firm(value);
1965 value_node = create_conv(dbgi, value_node, mode_b);
1966 ir_node *res = new_d_Not(dbgi, value_node, mode_b);
1969 case EXPR_UNARY_DEREFERENCE: {
1970 ir_node *value_node = expression_to_firm(value);
1971 type_t *value_type = skip_typeref(value->base.type);
1972 assert(is_type_pointer(value_type));
1973 type_t *points_to = value_type->pointer.points_to;
1974 return deref_address(dbgi, points_to, value_node);
1976 case EXPR_UNARY_POSTFIX_INCREMENT:
1977 case EXPR_UNARY_POSTFIX_DECREMENT:
1978 case EXPR_UNARY_PREFIX_INCREMENT:
1979 case EXPR_UNARY_PREFIX_DECREMENT:
1980 return create_incdec(expression);
1981 case EXPR_UNARY_CAST: {
1982 ir_node *value_node = expression_to_firm(value);
1983 if(is_type_scalar(type)) {
1984 ir_mode *mode = get_ir_mode(type);
1985 ir_node *node = create_conv(dbgi, value_node, mode);
1986 node = do_strict_conv(dbgi, node);
1989 /* make sure firm type is constructed */
1990 (void) get_ir_type(type);
1994 case EXPR_UNARY_CAST_IMPLICIT: {
1995 ir_node *value_node = expression_to_firm(value);
1996 if(is_type_scalar(type)) {
1997 ir_mode *mode = get_ir_mode(type);
1998 return create_conv(dbgi, value_node, mode);
2003 case EXPR_UNARY_ASSUME:
2004 if(firm_opt.confirm)
2005 return handle_assume(dbgi, value);
2012 panic("invalid UNEXPR type found");
2016 * produces a 0/1 depending of the value of a mode_b node
2018 static ir_node *produce_condition_result(const expression_t *expression,
2021 ir_mode *mode = get_ir_mode(expression->base.type);
2022 ir_node *cur_block = get_cur_block();
2024 ir_node *one_block = new_immBlock();
2025 ir_node *one = new_Const(mode, get_mode_one(mode));
2026 ir_node *jmp_one = new_d_Jmp(dbgi);
2028 ir_node *zero_block = new_immBlock();
2029 ir_node *zero = new_Const(mode, get_mode_null(mode));
2030 ir_node *jmp_zero = new_d_Jmp(dbgi);
2032 set_cur_block(cur_block);
2033 create_condition_evaluation(expression, one_block, zero_block);
2034 mature_immBlock(one_block);
2035 mature_immBlock(zero_block);
2037 ir_node *common_block = new_immBlock();
2038 add_immBlock_pred(common_block, jmp_one);
2039 add_immBlock_pred(common_block, jmp_zero);
2040 mature_immBlock(common_block);
2042 ir_node *in[2] = { one, zero };
2043 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2048 static ir_node *adjust_for_pointer_arithmetic(dbg_info *dbgi,
2049 ir_node *value, type_t *type)
2051 pointer_type_t *const pointer_type = &type->pointer;
2052 type_t *const points_to = pointer_type->points_to;
2053 const unsigned elem_size = get_type_size_const(points_to);
2055 assert(elem_size >= 1);
2059 value = create_conv(dbgi, value, mode_int);
2060 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
2061 ir_node *const mul = new_d_Mul(dbgi, value, cnst, mode_int);
2065 static ir_node *create_op(dbg_info *dbgi, const binary_expression_t *expression,
2066 ir_node *left, ir_node *right)
2069 type_t *type_left = skip_typeref(expression->left->base.type);
2070 type_t *type_right = skip_typeref(expression->right->base.type);
2072 expression_kind_t kind = expression->base.kind;
2075 case EXPR_BINARY_SHIFTLEFT:
2076 case EXPR_BINARY_SHIFTRIGHT:
2077 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2078 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2079 mode = get_irn_mode(left);
2080 right = create_conv(dbgi, right, mode_uint);
2083 case EXPR_BINARY_SUB:
2084 if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2085 const pointer_type_t *const ptr_type = &type_left->pointer;
2087 mode = get_ir_mode(expression->base.type);
2088 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2089 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2090 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2091 ir_node *const no_mem = new_NoMem();
2092 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size,
2093 mode, op_pin_state_floats);
2094 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2097 case EXPR_BINARY_SUB_ASSIGN:
2098 if (is_type_pointer(type_left)) {
2099 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2100 mode = get_ir_mode(type_left);
2105 case EXPR_BINARY_ADD:
2106 case EXPR_BINARY_ADD_ASSIGN:
2107 if (is_type_pointer(type_left)) {
2108 right = adjust_for_pointer_arithmetic(dbgi, right, type_left);
2109 mode = get_ir_mode(type_left);
2111 } else if (is_type_pointer(type_right)) {
2112 left = adjust_for_pointer_arithmetic(dbgi, left, type_right);
2113 mode = get_ir_mode(type_right);
2120 mode = get_irn_mode(right);
2121 left = create_conv(dbgi, left, mode);
2126 case EXPR_BINARY_ADD_ASSIGN:
2127 case EXPR_BINARY_ADD:
2128 return new_d_Add(dbgi, left, right, mode);
2129 case EXPR_BINARY_SUB_ASSIGN:
2130 case EXPR_BINARY_SUB:
2131 return new_d_Sub(dbgi, left, right, mode);
2132 case EXPR_BINARY_MUL_ASSIGN:
2133 case EXPR_BINARY_MUL:
2134 return new_d_Mul(dbgi, left, right, mode);
2135 case EXPR_BINARY_BITWISE_AND:
2136 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2137 return new_d_And(dbgi, left, right, mode);
2138 case EXPR_BINARY_BITWISE_OR:
2139 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2140 return new_d_Or(dbgi, left, right, mode);
2141 case EXPR_BINARY_BITWISE_XOR:
2142 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2143 return new_d_Eor(dbgi, left, right, mode);
2144 case EXPR_BINARY_SHIFTLEFT:
2145 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2146 return new_d_Shl(dbgi, left, right, mode);
2147 case EXPR_BINARY_SHIFTRIGHT:
2148 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2149 if (mode_is_signed(mode)) {
2150 return new_d_Shrs(dbgi, left, right, mode);
2152 return new_d_Shr(dbgi, left, right, mode);
2154 case EXPR_BINARY_DIV:
2155 case EXPR_BINARY_DIV_ASSIGN: {
2156 ir_node *pin = new_Pin(new_NoMem());
2159 if(mode_is_float(mode)) {
2160 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2161 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2163 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2164 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2168 case EXPR_BINARY_MOD:
2169 case EXPR_BINARY_MOD_ASSIGN: {
2170 ir_node *pin = new_Pin(new_NoMem());
2171 assert(!mode_is_float(mode));
2172 ir_node *op = new_d_Mod(dbgi, pin, left, right, mode,
2173 op_pin_state_floats);
2174 ir_node *res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2178 panic("unexpected expression kind");
2182 static ir_node *create_lazy_op(const binary_expression_t *expression)
2184 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2185 type_t *type = expression->base.type;
2186 ir_mode *mode = get_ir_mode(type);
2188 if(is_constant_expression(expression->left)) {
2189 long val = fold_constant(expression->left);
2190 expression_kind_t ekind = expression->base.kind;
2191 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
2192 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
2193 return expression_to_firm(expression->right);
2195 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
2196 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
2197 return new_Const(mode, get_mode_one(mode));
2201 return produce_condition_result((const expression_t*) expression, dbgi);
2204 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
2205 ir_node *right, ir_mode *mode);
2207 static ir_node *create_assign_binop(const binary_expression_t *expression)
2209 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2210 const expression_t *left_expr = expression->left;
2211 ir_mode *left_mode = get_ir_mode(left_expr->base.type);
2212 ir_node *left_addr = expression_to_addr(left_expr);
2213 ir_node *left = get_value_from_lvalue(left_expr, left_addr);
2214 ir_node *right = expression_to_firm(expression->right);
2215 ir_node *result = create_op(dbgi, expression, left, right);
2217 result = create_conv(dbgi, result, left_mode);
2218 result = do_strict_conv(dbgi, result);
2220 set_value_for_expression_addr(left_expr, result, left_addr);
2225 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2227 expression_kind_t kind = expression->base.kind;
2230 case EXPR_BINARY_EQUAL:
2231 case EXPR_BINARY_NOTEQUAL:
2232 case EXPR_BINARY_LESS:
2233 case EXPR_BINARY_LESSEQUAL:
2234 case EXPR_BINARY_GREATER:
2235 case EXPR_BINARY_GREATEREQUAL:
2236 case EXPR_BINARY_ISGREATER:
2237 case EXPR_BINARY_ISGREATEREQUAL:
2238 case EXPR_BINARY_ISLESS:
2239 case EXPR_BINARY_ISLESSEQUAL:
2240 case EXPR_BINARY_ISLESSGREATER:
2241 case EXPR_BINARY_ISUNORDERED: {
2242 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2243 ir_node *left = expression_to_firm(expression->left);
2244 ir_node *right = expression_to_firm(expression->right);
2245 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2246 long pnc = get_pnc(kind, expression->left->base.type);
2247 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2250 case EXPR_BINARY_ASSIGN: {
2251 ir_node *right = expression_to_firm(expression->right);
2252 set_value_for_expression(expression->left, right);
2256 case EXPR_BINARY_ADD:
2257 case EXPR_BINARY_SUB:
2258 case EXPR_BINARY_MUL:
2259 case EXPR_BINARY_DIV:
2260 case EXPR_BINARY_MOD:
2261 case EXPR_BINARY_BITWISE_AND:
2262 case EXPR_BINARY_BITWISE_OR:
2263 case EXPR_BINARY_BITWISE_XOR:
2264 case EXPR_BINARY_SHIFTLEFT:
2265 case EXPR_BINARY_SHIFTRIGHT:
2267 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2268 ir_node *left = expression_to_firm(expression->left);
2269 ir_node *right = expression_to_firm(expression->right);
2270 return create_op(dbgi, expression, left, right);
2272 case EXPR_BINARY_LOGICAL_AND:
2273 case EXPR_BINARY_LOGICAL_OR:
2274 return create_lazy_op(expression);
2275 case EXPR_BINARY_COMMA:
2276 /* create side effects of left side */
2277 (void) expression_to_firm(expression->left);
2278 return _expression_to_firm(expression->right);
2280 case EXPR_BINARY_ADD_ASSIGN:
2281 case EXPR_BINARY_SUB_ASSIGN:
2282 case EXPR_BINARY_MUL_ASSIGN:
2283 case EXPR_BINARY_MOD_ASSIGN:
2284 case EXPR_BINARY_DIV_ASSIGN:
2285 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2286 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2287 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2288 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2289 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2290 return create_assign_binop(expression);
2291 case EXPR_BINARY_BUILTIN_EXPECT:
2292 return _expression_to_firm(expression->left);
2294 panic("TODO binexpr type");
2298 static ir_node *array_access_addr(const array_access_expression_t *expression)
2300 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2301 ir_node *base_addr = expression_to_firm(expression->array_ref);
2302 ir_node *offset = expression_to_firm(expression->index);
2304 type_t *offset_type = skip_typeref(expression->index->base.type);
2306 if (is_type_signed(offset_type)) {
2307 mode = get_ir_mode(type_ssize_t);
2309 mode = get_ir_mode(type_size_t);
2311 offset = create_conv(dbgi, offset, mode);
2313 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2314 assert(is_type_pointer(ref_type));
2315 pointer_type_t *pointer_type = &ref_type->pointer;
2317 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2318 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2319 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2321 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2326 static ir_node *array_access_to_firm(
2327 const array_access_expression_t *expression)
2329 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2330 ir_node *addr = array_access_addr(expression);
2331 type_t *type = revert_automatic_type_conversion(
2332 (const expression_t*) expression);
2333 type = skip_typeref(type);
2335 return deref_address(dbgi, type, addr);
2338 static long get_offsetof_offset(const offsetof_expression_t *expression)
2340 type_t *orig_type = expression->type;
2343 designator_t *designator = expression->designator;
2344 for( ; designator != NULL; designator = designator->next) {
2345 type_t *type = skip_typeref(orig_type);
2346 /* be sure the type is constructed */
2347 (void) get_ir_type(type);
2349 if(designator->symbol != NULL) {
2350 assert(is_type_compound(type));
2351 symbol_t *symbol = designator->symbol;
2353 declaration_t *declaration = type->compound.declaration;
2354 declaration_t *iter = declaration->scope.declarations;
2355 for( ; iter != NULL; iter = iter->next) {
2356 if(iter->symbol == symbol) {
2360 assert(iter != NULL);
2362 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2363 offset += get_entity_offset(iter->v.entity);
2365 orig_type = iter->type;
2367 expression_t *array_index = designator->array_index;
2368 assert(designator->array_index != NULL);
2369 assert(is_type_array(type));
2370 assert(is_type_valid(array_index->base.type));
2372 long index = fold_constant(array_index);
2373 ir_type *arr_type = get_ir_type(type);
2374 ir_type *elem_type = get_array_element_type(arr_type);
2375 long elem_size = get_type_size_bytes(elem_type);
2377 offset += index * elem_size;
2379 orig_type = type->array.element_type;
2386 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2388 ir_mode *mode = get_ir_mode(expression->base.type);
2389 long offset = get_offsetof_offset(expression);
2390 tarval *tv = new_tarval_from_long(offset, mode);
2391 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2393 return new_d_Const(dbgi, mode, tv);
2396 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2397 ir_entity *entity, type_t *type);
2399 static ir_node *compound_literal_to_firm(
2400 const compound_literal_expression_t *expression)
2402 type_t *type = expression->type;
2404 /* create an entity on the stack */
2405 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2407 ident *const id = id_unique("CompLit.%u");
2408 ir_type *const irtype = get_ir_type(type);
2409 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2410 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2411 set_entity_ld_ident(entity, id);
2413 set_entity_variability(entity, variability_uninitialized);
2415 /* create initialisation code */
2416 initializer_t *initializer = expression->initializer;
2417 create_local_initializer(initializer, dbgi, entity, type);
2419 /* create a sel for the compound literal address */
2420 ir_node *frame = get_local_frame(entity);
2421 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2426 * Transform a sizeof expression into Firm code.
2428 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2430 type_t *type = expression->type;
2432 type = expression->tp_expression->base.type;
2433 assert(type != NULL);
2436 type = skip_typeref(type);
2437 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2438 if(is_type_array(type) && type->array.is_vla
2439 && expression->tp_expression != NULL) {
2440 expression_to_firm(expression->tp_expression);
2443 return get_type_size(type);
2447 * Transform an alignof expression into Firm code.
2449 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2451 type_t *type = expression->type;
2453 /* beware: if expression is a variable reference, return the
2454 alignment of the variable. */
2455 const expression_t *tp_expression = expression->tp_expression;
2456 const declaration_t *declaration = expr_is_variable(tp_expression);
2457 if (declaration != NULL) {
2458 /* TODO: get the alignment of this variable. */
2460 type = tp_expression->base.type;
2461 assert(type != NULL);
2464 ir_mode *const mode = get_ir_mode(expression->base.type);
2465 symconst_symbol sym;
2466 sym.type_p = get_ir_type(type);
2467 return new_SymConst(mode, sym, symconst_type_align);
2470 static bool constant_folding;
2472 static void init_ir_types(void);
2473 long fold_constant(const expression_t *expression)
2475 bool constant_folding_old = constant_folding;
2476 constant_folding = true;
2480 assert(is_constant_expression(expression));
2482 ir_graph *old_current_ir_graph = current_ir_graph;
2483 if(current_ir_graph == NULL) {
2484 current_ir_graph = get_const_code_irg();
2487 ir_node *cnst = expression_to_firm(expression);
2488 current_ir_graph = old_current_ir_graph;
2490 if(!is_Const(cnst)) {
2491 panic("couldn't fold constant\n");
2494 tarval *tv = get_Const_tarval(cnst);
2495 if(!tarval_is_long(tv)) {
2496 panic("result of constant folding is not integer\n");
2499 constant_folding = constant_folding_old;
2501 return get_tarval_long(tv);
2504 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2506 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2508 /* first try to fold a constant condition */
2509 if(is_constant_expression(expression->condition)) {
2510 long val = fold_constant(expression->condition);
2512 return expression_to_firm(expression->true_expression);
2514 return expression_to_firm(expression->false_expression);
2518 ir_node *cur_block = get_cur_block();
2520 /* create the true block */
2521 ir_node *true_block = new_immBlock();
2523 ir_node *true_val = expression_to_firm(expression->true_expression);
2524 ir_node *true_jmp = new_Jmp();
2526 /* create the false block */
2527 ir_node *false_block = new_immBlock();
2529 ir_node *false_val = expression_to_firm(expression->false_expression);
2530 ir_node *false_jmp = new_Jmp();
2532 /* create the condition evaluation */
2533 set_cur_block(cur_block);
2534 create_condition_evaluation(expression->condition, true_block, false_block);
2535 mature_immBlock(true_block);
2536 mature_immBlock(false_block);
2538 /* create the common block */
2539 ir_node *common_block = new_immBlock();
2540 add_immBlock_pred(common_block, true_jmp);
2541 add_immBlock_pred(common_block, false_jmp);
2542 mature_immBlock(common_block);
2544 /* TODO improve static semantics, so either both or no values are NULL */
2545 if (true_val == NULL || false_val == NULL)
2548 ir_node *in[2] = { true_val, false_val };
2549 ir_mode *mode = get_irn_mode(true_val);
2550 assert(get_irn_mode(false_val) == mode);
2551 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2557 * Returns an IR-node representing the address of a field.
2559 static ir_node *select_addr(const select_expression_t *expression)
2561 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2563 ir_node *compound_addr = expression_to_firm(expression->compound);
2565 /* make sure the type is constructed */
2566 type_t *type = skip_typeref(expression->compound->base.type);
2567 if (is_type_pointer(type)) {
2568 type = type->pointer.points_to;
2570 (void) get_ir_type(type);
2572 declaration_t *entry = expression->compound_entry;
2573 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2574 ir_entity *entity = entry->v.entity;
2576 assert(entity != NULL);
2578 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2583 static ir_node *select_to_firm(const select_expression_t *expression)
2585 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2586 ir_node *addr = select_addr(expression);
2587 type_t *type = revert_automatic_type_conversion(
2588 (const expression_t*) expression);
2589 type = skip_typeref(type);
2591 declaration_t *entry = expression->compound_entry;
2592 type_t *entry_type = skip_typeref(entry->type);
2594 if (entry_type->kind == TYPE_BITFIELD) {
2595 return bitfield_extract_to_firm(expression, addr);
2598 return deref_address(dbgi, type, addr);
2601 /* Values returned by __builtin_classify_type. */
2602 typedef enum gcc_type_class
2608 enumeral_type_class,
2611 reference_type_class,
2615 function_type_class,
2626 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2628 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2634 const atomic_type_t *const atomic_type = &type->atomic;
2635 switch (atomic_type->akind) {
2636 /* should not be reached */
2637 case ATOMIC_TYPE_INVALID:
2641 /* gcc cannot do that */
2642 case ATOMIC_TYPE_VOID:
2643 tc = void_type_class;
2646 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2647 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2648 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2649 case ATOMIC_TYPE_SHORT:
2650 case ATOMIC_TYPE_USHORT:
2651 case ATOMIC_TYPE_INT:
2652 case ATOMIC_TYPE_UINT:
2653 case ATOMIC_TYPE_LONG:
2654 case ATOMIC_TYPE_ULONG:
2655 case ATOMIC_TYPE_LONGLONG:
2656 case ATOMIC_TYPE_ULONGLONG:
2657 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2658 tc = integer_type_class;
2661 case ATOMIC_TYPE_FLOAT:
2662 case ATOMIC_TYPE_DOUBLE:
2663 case ATOMIC_TYPE_LONG_DOUBLE:
2664 tc = real_type_class;
2667 panic("Unexpected atomic type in classify_type_to_firm().");
2670 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2671 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2672 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2673 case TYPE_ARRAY: /* gcc handles this as pointer */
2674 case TYPE_FUNCTION: /* gcc handles this as pointer */
2675 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2676 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2677 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2679 /* gcc handles this as integer */
2680 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2683 /* typedef/typeof should be skipped already */
2690 panic("unexpected TYPE classify_type_to_firm().");
2693 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2694 ir_mode *const mode = mode_int;
2695 tarval *const tv = new_tarval_from_long(tc, mode);
2696 return new_d_Const(dbgi, mode, tv);
2699 static ir_node *function_name_to_firm(
2700 const funcname_expression_t *const expr)
2702 switch(expr->kind) {
2703 case FUNCNAME_FUNCTION:
2704 case FUNCNAME_PRETTY_FUNCTION:
2705 case FUNCNAME_FUNCDNAME:
2706 if (current_function_name == NULL) {
2707 const source_position_t *const src_pos = &expr->base.source_position;
2708 const char *const name = current_function_decl->symbol->string;
2709 const string_t string = { name, strlen(name) + 1 };
2710 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2712 return current_function_name;
2713 case FUNCNAME_FUNCSIG:
2714 if (current_funcsig == NULL) {
2715 const source_position_t *const src_pos = &expr->base.source_position;
2716 ir_entity *ent = get_irg_entity(current_ir_graph);
2717 const char *const name = get_entity_ld_name(ent);
2718 const string_t string = { name, strlen(name) + 1 };
2719 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2721 return current_funcsig;
2723 panic("Unsupported function name");
2726 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2728 statement_t *statement = expr->statement;
2730 assert(statement->kind == STATEMENT_COMPOUND);
2731 return compound_statement_to_firm(&statement->compound);
2734 static ir_node *va_start_expression_to_firm(
2735 const va_start_expression_t *const expr)
2737 ir_type *const method_type = get_ir_type(current_function_decl->type);
2738 int const n = get_method_n_params(method_type) - 1;
2739 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2740 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2741 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2742 ir_node *const no_mem = new_NoMem();
2743 ir_node *const arg_sel =
2744 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2746 ir_node *const cnst = get_type_size(expr->parameter->type);
2747 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2748 set_value_for_expression(expr->ap, add);
2753 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2755 type_t *const type = expr->base.type;
2756 ir_node *const ap = expression_to_firm(expr->ap);
2757 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2758 ir_node *const res = deref_address(dbgi, type, ap);
2760 ir_node *const cnst = get_type_size(expr->base.type);
2761 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2762 set_value_for_expression(expr->ap, add);
2767 static ir_node *dereference_addr(const unary_expression_t *const expression)
2769 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2770 return expression_to_firm(expression->value);
2774 * Returns a IR-node representing an lvalue of the given expression.
2776 static ir_node *expression_to_addr(const expression_t *expression)
2778 switch(expression->kind) {
2779 case EXPR_REFERENCE:
2780 return reference_addr(&expression->reference);
2781 case EXPR_ARRAY_ACCESS:
2782 return array_access_addr(&expression->array_access);
2784 return select_addr(&expression->select);
2786 return call_expression_to_firm(&expression->call);
2787 case EXPR_UNARY_DEREFERENCE: {
2788 return dereference_addr(&expression->unary);
2793 panic("trying to get address of non-lvalue");
2796 static ir_node *builtin_constant_to_firm(
2797 const builtin_constant_expression_t *expression)
2799 ir_mode *mode = get_ir_mode(expression->base.type);
2802 if (is_constant_expression(expression->value)) {
2807 return new_Const_long(mode, v);
2810 static ir_node *builtin_prefetch_to_firm(
2811 const builtin_prefetch_expression_t *expression)
2813 ir_node *adr = expression_to_firm(expression->adr);
2814 /* no Firm support for prefetch yet */
2820 * creates firm nodes for an expression. The difference between this function
2821 * and expression_to_firm is, that this version might produce mode_b nodes
2822 * instead of mode_Is.
2824 static ir_node *_expression_to_firm(const expression_t *expression)
2827 if (!constant_folding) {
2828 assert(!expression->base.transformed);
2829 ((expression_t*) expression)->base.transformed = true;
2833 switch(expression->kind) {
2834 case EXPR_CHARACTER_CONSTANT:
2835 return character_constant_to_firm(&expression->conste);
2836 case EXPR_WIDE_CHARACTER_CONSTANT:
2837 return wide_character_constant_to_firm(&expression->conste);
2839 return const_to_firm(&expression->conste);
2840 case EXPR_STRING_LITERAL:
2841 return string_literal_to_firm(&expression->string);
2842 case EXPR_WIDE_STRING_LITERAL:
2843 return wide_string_literal_to_firm(&expression->wide_string);
2844 case EXPR_REFERENCE:
2845 return reference_expression_to_firm(&expression->reference);
2847 return call_expression_to_firm(&expression->call);
2849 return unary_expression_to_firm(&expression->unary);
2851 return binary_expression_to_firm(&expression->binary);
2852 case EXPR_ARRAY_ACCESS:
2853 return array_access_to_firm(&expression->array_access);
2855 return sizeof_to_firm(&expression->typeprop);
2857 return alignof_to_firm(&expression->typeprop);
2858 case EXPR_CONDITIONAL:
2859 return conditional_to_firm(&expression->conditional);
2861 return select_to_firm(&expression->select);
2862 case EXPR_CLASSIFY_TYPE:
2863 return classify_type_to_firm(&expression->classify_type);
2865 return function_name_to_firm(&expression->funcname);
2866 case EXPR_STATEMENT:
2867 return statement_expression_to_firm(&expression->statement);
2869 return va_start_expression_to_firm(&expression->va_starte);
2871 return va_arg_expression_to_firm(&expression->va_arge);
2872 case EXPR_BUILTIN_SYMBOL:
2873 panic("unimplemented expression found");
2874 case EXPR_BUILTIN_CONSTANT_P:
2875 return builtin_constant_to_firm(&expression->builtin_constant);
2876 case EXPR_BUILTIN_PREFETCH:
2877 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2879 return offsetof_to_firm(&expression->offsetofe);
2880 case EXPR_COMPOUND_LITERAL:
2881 return compound_literal_to_firm(&expression->compound_literal);
2887 panic("invalid expression found");
2890 static bool produces_mode_b(const expression_t *expression)
2892 switch (expression->kind) {
2893 case EXPR_BINARY_EQUAL:
2894 case EXPR_BINARY_NOTEQUAL:
2895 case EXPR_BINARY_LESS:
2896 case EXPR_BINARY_LESSEQUAL:
2897 case EXPR_BINARY_GREATER:
2898 case EXPR_BINARY_GREATEREQUAL:
2899 case EXPR_BINARY_ISGREATER:
2900 case EXPR_BINARY_ISGREATEREQUAL:
2901 case EXPR_BINARY_ISLESS:
2902 case EXPR_BINARY_ISLESSEQUAL:
2903 case EXPR_BINARY_ISLESSGREATER:
2904 case EXPR_BINARY_ISUNORDERED:
2905 case EXPR_UNARY_NOT:
2908 case EXPR_BINARY_BUILTIN_EXPECT:
2909 return produces_mode_b(expression->binary.left);
2916 static ir_node *expression_to_firm(const expression_t *expression)
2918 if (!produces_mode_b(expression)) {
2919 ir_node *res = _expression_to_firm(expression);
2920 assert(res == NULL || get_irn_mode(res) != mode_b);
2924 if (is_constant_expression(expression)) {
2925 ir_node *res = _expression_to_firm(expression);
2926 ir_mode *mode = get_ir_mode(expression->base.type);
2927 assert(is_Const(res));
2928 if (is_Const_null(res)) {
2929 return new_Const_long(mode, 0);
2931 return new_Const_long(mode, 1);
2935 /* we have to produce a 0/1 from the mode_b expression */
2936 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2937 return produce_condition_result(expression, dbgi);
2940 static ir_node *expression_to_modeb(const expression_t *expression)
2942 ir_node *res = _expression_to_firm(expression);
2943 res = create_conv(NULL, res, mode_b);
2949 * create a short-circuit expression evaluation that tries to construct
2950 * efficient control flow structures for &&, || and ! expressions
2952 static void create_condition_evaluation(const expression_t *expression,
2953 ir_node *true_block,
2954 ir_node *false_block)
2956 switch(expression->kind) {
2957 case EXPR_UNARY_NOT: {
2958 const unary_expression_t *unary_expression = &expression->unary;
2959 create_condition_evaluation(unary_expression->value, false_block,
2963 case EXPR_BINARY_LOGICAL_AND: {
2964 const binary_expression_t *binary_expression = &expression->binary;
2966 ir_node *cur_block = get_cur_block();
2967 ir_node *extra_block = new_immBlock();
2968 set_cur_block(cur_block);
2969 create_condition_evaluation(binary_expression->left, extra_block,
2971 mature_immBlock(extra_block);
2972 set_cur_block(extra_block);
2973 create_condition_evaluation(binary_expression->right, true_block,
2977 case EXPR_BINARY_LOGICAL_OR: {
2978 const binary_expression_t *binary_expression = &expression->binary;
2980 ir_node *cur_block = get_cur_block();
2981 ir_node *extra_block = new_immBlock();
2982 set_cur_block(cur_block);
2983 create_condition_evaluation(binary_expression->left, true_block,
2985 mature_immBlock(extra_block);
2986 set_cur_block(extra_block);
2987 create_condition_evaluation(binary_expression->right, true_block,
2995 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2996 ir_node *condition = expression_to_modeb(expression);
2997 ir_node *cond = new_d_Cond(dbgi, condition);
2998 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2999 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3001 /* set branch prediction info based on __builtin_expect */
3002 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3003 long cnst = fold_constant(expression->binary.right);
3004 cond_jmp_predicate pred;
3007 pred = COND_JMP_PRED_FALSE;
3009 pred = COND_JMP_PRED_TRUE;
3011 set_Cond_jmp_pred(cond, pred);
3014 add_immBlock_pred(true_block, true_proj);
3015 add_immBlock_pred(false_block, false_proj);
3017 set_cur_block(NULL);
3022 static void create_declaration_entity(declaration_t *declaration,
3023 declaration_kind_t declaration_kind,
3024 ir_type *parent_type)
3026 ident *const id = new_id_from_str(declaration->symbol->string);
3027 type_t *const type = skip_typeref(declaration->type);
3028 ir_type *const irtype = get_ir_type(type);
3029 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3030 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3032 declaration->declaration_kind = (unsigned char) declaration_kind;
3033 declaration->v.entity = entity;
3034 set_entity_variability(entity, variability_uninitialized);
3035 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3036 if(parent_type == get_tls_type())
3037 set_entity_allocation(entity, allocation_automatic);
3038 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3039 set_entity_allocation(entity, allocation_static);
3041 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3042 set_entity_volatility(entity, volatility_is_volatile);
3047 typedef struct type_path_entry_t type_path_entry_t;
3048 struct type_path_entry_t {
3050 ir_initializer_t *initializer;
3052 declaration_t *compound_entry;
3055 typedef struct type_path_t type_path_t;
3056 struct type_path_t {
3057 type_path_entry_t *path;
3062 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3064 size_t len = ARR_LEN(path->path);
3066 for(size_t i = 0; i < len; ++i) {
3067 const type_path_entry_t *entry = & path->path[i];
3069 type_t *type = skip_typeref(entry->type);
3070 if(is_type_compound(type)) {
3071 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3072 } else if(is_type_array(type)) {
3073 fprintf(stderr, "[%zd]", entry->index);
3075 fprintf(stderr, "-INVALID-");
3078 fprintf(stderr, " (");
3079 print_type(path->top_type);
3080 fprintf(stderr, ")");
3083 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3085 size_t len = ARR_LEN(path->path);
3087 return & path->path[len-1];
3090 static type_path_entry_t *append_to_type_path(type_path_t *path)
3092 size_t len = ARR_LEN(path->path);
3093 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3095 type_path_entry_t *result = & path->path[len];
3096 memset(result, 0, sizeof(result[0]));
3100 static size_t get_compound_size(const compound_type_t *type)
3102 declaration_t *declaration = type->declaration;
3103 declaration_t *member = declaration->scope.declarations;
3105 for( ; member != NULL; member = member->next) {
3108 /* TODO: cache results? */
3113 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3115 type_t *orig_top_type = path->top_type;
3116 type_t *top_type = skip_typeref(orig_top_type);
3118 assert(is_type_compound(top_type) || is_type_array(top_type));
3120 if(ARR_LEN(path->path) == 0) {
3123 type_path_entry_t *top = get_type_path_top(path);
3124 ir_initializer_t *initializer = top->initializer;
3125 return get_initializer_compound_value(initializer, top->index);
3129 static void descend_into_subtype(type_path_t *path)
3131 type_t *orig_top_type = path->top_type;
3132 type_t *top_type = skip_typeref(orig_top_type);
3134 assert(is_type_compound(top_type) || is_type_array(top_type));
3136 ir_initializer_t *initializer = get_initializer_entry(path);
3138 type_path_entry_t *top = append_to_type_path(path);
3139 top->type = top_type;
3143 if(is_type_compound(top_type)) {
3144 declaration_t *declaration = top_type->compound.declaration;
3145 declaration_t *entry = declaration->scope.declarations;
3147 top->compound_entry = entry;
3149 len = get_compound_size(&top_type->compound);
3151 path->top_type = entry->type;
3153 assert(is_type_array(top_type));
3154 assert(top_type->array.size > 0);
3157 path->top_type = top_type->array.element_type;
3158 len = top_type->array.size;
3160 if(initializer == NULL
3161 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3162 initializer = create_initializer_compound(len);
3163 /* we have to set the entry at the 2nd latest path entry... */
3164 size_t path_len = ARR_LEN(path->path);
3165 assert(path_len >= 1);
3167 type_path_entry_t *entry = & path->path[path_len-2];
3168 ir_initializer_t *tinitializer = entry->initializer;
3169 set_initializer_compound_value(tinitializer, entry->index,
3173 top->initializer = initializer;
3176 static void ascend_from_subtype(type_path_t *path)
3178 type_path_entry_t *top = get_type_path_top(path);
3180 path->top_type = top->type;
3182 size_t len = ARR_LEN(path->path);
3183 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3186 static void walk_designator(type_path_t *path, const designator_t *designator)
3188 /* designators start at current object type */
3189 ARR_RESIZE(type_path_entry_t, path->path, 1);
3191 for( ; designator != NULL; designator = designator->next) {
3192 type_path_entry_t *top = get_type_path_top(path);
3193 type_t *orig_type = top->type;
3194 type_t *type = skip_typeref(orig_type);
3196 if(designator->symbol != NULL) {
3197 assert(is_type_compound(type));
3199 symbol_t *symbol = designator->symbol;
3201 declaration_t *declaration = type->compound.declaration;
3202 declaration_t *iter = declaration->scope.declarations;
3203 for( ; iter != NULL; iter = iter->next, ++index) {
3204 if(iter->symbol == symbol) {
3208 assert(iter != NULL);
3210 top->type = orig_type;
3211 top->compound_entry = iter;
3213 orig_type = iter->type;
3215 expression_t *array_index = designator->array_index;
3216 assert(designator->array_index != NULL);
3217 assert(is_type_array(type));
3218 assert(is_type_valid(array_index->base.type));
3220 long index = fold_constant(array_index);
3223 if(type->array.size_constant == 1) {
3224 long array_size = type->array.size;
3225 assert(index < array_size);
3229 top->type = orig_type;
3230 top->index = (size_t) index;
3231 orig_type = type->array.element_type;
3233 path->top_type = orig_type;
3235 if(designator->next != NULL) {
3236 descend_into_subtype(path);
3240 path->invalid = false;
3243 static void advance_current_object(type_path_t *path)
3246 /* TODO: handle this... */
3247 panic("invalid initializer in ast2firm (excessive elements)");
3251 type_path_entry_t *top = get_type_path_top(path);
3253 type_t *type = skip_typeref(top->type);
3254 if(is_type_union(type)) {
3255 top->compound_entry = NULL;
3256 } else if(is_type_struct(type)) {
3257 declaration_t *entry = top->compound_entry;
3260 entry = entry->next;
3261 top->compound_entry = entry;
3263 path->top_type = entry->type;
3267 assert(is_type_array(type));
3270 if(!type->array.size_constant || top->index < type->array.size) {
3275 /* we're past the last member of the current sub-aggregate, try if we
3276 * can ascend in the type hierarchy and continue with another subobject */
3277 size_t len = ARR_LEN(path->path);
3280 ascend_from_subtype(path);
3281 advance_current_object(path);
3283 path->invalid = true;
3288 static ir_initializer_t *create_ir_initializer(
3289 const initializer_t *initializer, type_t *type);
3291 static ir_initializer_t *create_ir_initializer_value(
3292 const initializer_value_t *initializer)
3294 if (is_type_compound(initializer->value->base.type)) {
3295 panic("initializer creation for compounds not implemented yet");
3297 ir_node *value = expression_to_firm(initializer->value);
3298 return create_initializer_const(value);
3301 static ir_initializer_t *create_ir_initializer_list(
3302 const initializer_list_t *initializer, type_t *type)
3305 memset(&path, 0, sizeof(path));
3306 path.top_type = type;
3307 path.path = NEW_ARR_F(type_path_entry_t, 0);
3309 descend_into_subtype(&path);
3311 for(size_t i = 0; i < initializer->len; ++i) {
3312 const initializer_t *sub_initializer = initializer->initializers[i];
3314 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3315 walk_designator(&path, sub_initializer->designator.designator);
3319 if(sub_initializer->kind == INITIALIZER_VALUE) {
3320 /* we might have to descend into types until we're at a scalar
3323 type_t *orig_top_type = path.top_type;
3324 type_t *top_type = skip_typeref(orig_top_type);
3326 if(is_type_scalar(top_type))
3328 descend_into_subtype(&path);
3332 ir_initializer_t *sub_irinitializer
3333 = create_ir_initializer(sub_initializer, path.top_type);
3335 size_t path_len = ARR_LEN(path.path);
3336 assert(path_len >= 1);
3337 type_path_entry_t *entry = & path.path[path_len-1];
3338 ir_initializer_t *tinitializer = entry->initializer;
3339 set_initializer_compound_value(tinitializer, entry->index,
3342 advance_current_object(&path);
3345 assert(ARR_LEN(path.path) >= 1);
3346 ir_initializer_t *result = path.path[0].initializer;
3347 DEL_ARR_F(path.path);
3352 static ir_initializer_t *create_ir_initializer_string(
3353 const initializer_string_t *initializer, type_t *type)
3355 type = skip_typeref(type);
3357 size_t string_len = initializer->string.size;
3358 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3359 size_t len = type->array.size;
3360 ir_initializer_t *irinitializer = create_initializer_compound(len);
3362 const char *string = initializer->string.begin;
3363 ir_mode *mode = get_type_mode(ir_type_const_char);
3365 for(size_t i = 0; i < len; ++i) {
3370 tarval *tv = new_tarval_from_long(c, mode);
3371 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3373 set_initializer_compound_value(irinitializer, i, char_initializer);
3376 return irinitializer;
3379 static ir_initializer_t *create_ir_initializer_wide_string(
3380 const initializer_wide_string_t *initializer, type_t *type)
3382 size_t string_len = initializer->string.size;
3383 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3384 size_t len = type->array.size;
3385 ir_initializer_t *irinitializer = create_initializer_compound(len);
3387 const wchar_rep_t *string = initializer->string.begin;
3388 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3390 for(size_t i = 0; i < len; ++i) {
3392 if(i < string_len) {
3395 tarval *tv = new_tarval_from_long(c, mode);
3396 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3398 set_initializer_compound_value(irinitializer, i, char_initializer);
3401 return irinitializer;
3404 static ir_initializer_t *create_ir_initializer(
3405 const initializer_t *initializer, type_t *type)
3407 switch(initializer->kind) {
3408 case INITIALIZER_STRING:
3409 return create_ir_initializer_string(&initializer->string, type);
3411 case INITIALIZER_WIDE_STRING:
3412 return create_ir_initializer_wide_string(&initializer->wide_string,
3415 case INITIALIZER_LIST:
3416 return create_ir_initializer_list(&initializer->list, type);
3418 case INITIALIZER_VALUE:
3419 return create_ir_initializer_value(&initializer->value);
3421 case INITIALIZER_DESIGNATOR:
3422 panic("unexpected designator initializer found");
3424 panic("unknown initializer");
3427 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3430 if (is_atomic_type(type)) {
3431 ir_mode *mode = get_type_mode(type);
3432 tarval *zero = get_mode_null(mode);
3433 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3435 /* TODO: bitfields */
3436 ir_node *mem = get_store();
3437 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3438 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3441 assert(is_compound_type(type));
3444 if(is_Array_type(type)) {
3445 assert(has_array_upper_bound(type, 0));
3446 n_members = get_array_upper_bound_int(type, 0);
3448 n_members = get_compound_n_members(type);
3451 for(int i = 0; i < n_members; ++i) {
3454 if(is_Array_type(type)) {
3455 ir_entity *entity = get_array_element_entity(type);
3456 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3457 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3458 ir_node *in[1] = { cnst };
3459 irtype = get_array_element_type(type);
3460 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3462 ir_entity *member = get_compound_member(type, i);
3464 irtype = get_entity_type(member);
3465 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3468 create_dynamic_null_initializer(irtype, dbgi, addr);
3473 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3474 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3476 switch(get_initializer_kind(initializer)) {
3477 case IR_INITIALIZER_NULL: {
3478 create_dynamic_null_initializer(type, dbgi, base_addr);
3481 case IR_INITIALIZER_CONST: {
3482 ir_node *node = get_initializer_const_value(initializer);
3483 ir_mode *mode = get_irn_mode(node);
3484 assert(get_type_mode(type) == mode);
3486 /* TODO: bitfields... */
3487 ir_node *mem = get_store();
3488 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3489 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3493 case IR_INITIALIZER_TARVAL: {
3494 tarval *tv = get_initializer_tarval_value(initializer);
3495 ir_mode *mode = get_tarval_mode(tv);
3496 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3497 assert(get_type_mode(type) == mode);
3499 /* TODO: bitfields... */
3500 ir_node *mem = get_store();
3501 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3502 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3506 case IR_INITIALIZER_COMPOUND: {
3507 assert(is_compound_type(type));
3509 if(is_Array_type(type)) {
3510 assert(has_array_upper_bound(type, 0));
3511 n_members = get_array_upper_bound_int(type, 0);
3513 n_members = get_compound_n_members(type);
3516 if(get_initializer_compound_n_entries(initializer)
3517 != (unsigned) n_members)
3518 panic("initializer doesn't match compound type");
3520 for(int i = 0; i < n_members; ++i) {
3523 if(is_Array_type(type)) {
3524 ir_entity *entity = get_array_element_entity(type);
3525 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3526 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3527 ir_node *in[1] = { cnst };
3528 irtype = get_array_element_type(type);
3529 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3531 ir_entity *member = get_compound_member(type, i);
3533 irtype = get_entity_type(member);
3534 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3537 ir_initializer_t *sub_init
3538 = get_initializer_compound_value(initializer, i);
3540 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3546 panic("invalid IR_INITIALIZER found");
3549 static void create_dynamic_initializer(ir_initializer_t *initializer,
3550 dbg_info *dbgi, ir_entity *entity)
3552 ir_node *frame = get_local_frame(entity);
3553 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3554 ir_type *type = get_entity_type(entity);
3556 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3559 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3560 ir_entity *entity, type_t *type)
3562 ir_node *memory = get_store();
3563 ir_node *nomem = new_NoMem();
3564 ir_node *frame = get_irg_frame(current_ir_graph);
3565 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3567 if(initializer->kind == INITIALIZER_VALUE) {
3568 initializer_value_t *initializer_value = &initializer->value;
3570 ir_node *value = expression_to_firm(initializer_value->value);
3571 type = skip_typeref(type);
3572 assign_value(dbgi, addr, type, value);
3576 if(!is_constant_initializer(initializer)) {
3577 ir_initializer_t *irinitializer
3578 = create_ir_initializer(initializer, type);
3580 create_dynamic_initializer(irinitializer, dbgi, entity);
3584 /* create the ir_initializer */
3585 ir_graph *const old_current_ir_graph = current_ir_graph;
3586 current_ir_graph = get_const_code_irg();
3588 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3590 assert(current_ir_graph == get_const_code_irg());
3591 current_ir_graph = old_current_ir_graph;
3593 /* create a "template" entity which is copied to the entity on the stack */
3594 ident *const id = id_unique("initializer.%u");
3595 ir_type *const irtype = get_ir_type(type);
3596 ir_type *const global_type = get_glob_type();
3597 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3598 set_entity_ld_ident(init_entity, id);
3600 set_entity_variability(init_entity, variability_initialized);
3601 set_entity_visibility(init_entity, visibility_local);
3602 set_entity_allocation(init_entity, allocation_static);
3604 set_entity_initializer(init_entity, irinitializer);
3606 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3607 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3609 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3610 set_store(copyb_mem);
3613 static void create_initializer_local_variable_entity(declaration_t *declaration)
3615 initializer_t *initializer = declaration->init.initializer;
3616 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3617 ir_entity *entity = declaration->v.entity;
3618 type_t *type = declaration->type;
3619 create_local_initializer(initializer, dbgi, entity, type);
3622 static void create_declaration_initializer(declaration_t *declaration)
3624 initializer_t *initializer = declaration->init.initializer;
3625 if(initializer == NULL)
3628 declaration_kind_t declaration_kind
3629 = (declaration_kind_t) declaration->declaration_kind;
3630 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3631 create_initializer_local_variable_entity(declaration);
3635 if(initializer->kind == INITIALIZER_VALUE) {
3636 initializer_value_t *initializer_value = &initializer->value;
3638 = get_dbg_info(&declaration->source_position);
3640 ir_node *value = expression_to_firm(initializer_value->value);
3641 value = do_strict_conv(dbgi, value);
3643 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3644 set_value(declaration->v.value_number, value);
3646 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3648 ir_entity *entity = declaration->v.entity;
3650 set_entity_variability(entity, variability_initialized);
3651 set_atomic_ent_value(entity, value);
3654 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3655 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3657 ir_entity *entity = declaration->v.entity;
3658 ir_initializer_t *irinitializer
3659 = create_ir_initializer(initializer, declaration->type);
3661 set_entity_variability(entity, variability_initialized);
3662 set_entity_initializer(entity, irinitializer);
3666 static void create_variable_length_array(declaration_t *declaration)
3668 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3669 type_t *type = declaration->type;
3670 ir_node *mem = get_store();
3671 ir_type *el_type = get_ir_type(type->array.element_type);
3673 /* make sure size_node is calculated */
3674 get_type_size(type);
3675 ir_node *elems = type->array.size_node;
3676 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3678 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3679 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3682 /* initializers are not allowed for VLAs */
3683 assert(declaration->init.initializer == NULL);
3685 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3686 declaration->v.vla_base = addr;
3688 /* TODO: record VLA somewhere so we create the free node when we leave
3693 * Creates a Firm local variable from a declaration.
3695 static void create_local_variable(declaration_t *declaration)
3697 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3699 bool needs_entity = declaration->address_taken;
3700 type_t *type = skip_typeref(declaration->type);
3702 /* is it a variable length array? */
3703 if(is_type_array(type) && !type->array.size_constant) {
3704 create_variable_length_array(declaration);
3706 } else if(is_type_array(type) || is_type_compound(type)) {
3707 needs_entity = true;
3708 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3709 needs_entity = true;
3713 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3714 create_declaration_entity(declaration,
3715 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3718 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3719 declaration->v.value_number = next_value_number_function;
3720 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3721 ++next_value_number_function;
3725 static void create_local_static_variable(declaration_t *declaration)
3727 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3729 type_t *const type = skip_typeref(declaration->type);
3730 ir_type *const global_type = get_glob_type();
3731 ir_type *const irtype = get_ir_type(type);
3732 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3734 size_t l = strlen(declaration->symbol->string);
3735 char buf[l + sizeof(".%u")];
3736 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3737 ident *const id = id_unique(buf);
3739 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3741 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3742 set_entity_volatility(entity, volatility_is_volatile);
3745 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3746 declaration->v.entity = entity;
3747 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3748 set_entity_variability(entity, variability_uninitialized);
3749 set_entity_visibility(entity, visibility_local);
3750 set_entity_allocation(entity, allocation_static);
3752 ir_graph *const old_current_ir_graph = current_ir_graph;
3753 current_ir_graph = get_const_code_irg();
3755 create_declaration_initializer(declaration);
3757 assert(current_ir_graph == get_const_code_irg());
3758 current_ir_graph = old_current_ir_graph;
3763 static void return_statement_to_firm(return_statement_t *statement)
3765 if(get_cur_block() == NULL)
3768 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3769 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3774 if(get_method_n_ress(func_irtype) > 0) {
3775 ir_type *res_type = get_method_res_type(func_irtype, 0);
3777 if(statement->value != NULL) {
3778 ir_node *node = expression_to_firm(statement->value);
3779 node = do_strict_conv(dbgi, node);
3783 if(is_compound_type(res_type)) {
3786 mode = get_type_mode(res_type);
3788 in[0] = new_Unknown(mode);
3792 /* build return_value for its side effects */
3793 if(statement->value != NULL) {
3794 expression_to_firm(statement->value);
3799 ir_node *store = get_store();
3800 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3802 ir_node *end_block = get_irg_end_block(current_ir_graph);
3803 add_immBlock_pred(end_block, ret);
3805 set_cur_block(NULL);
3808 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3810 if(get_cur_block() == NULL)
3813 return expression_to_firm(statement->expression);
3816 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3818 declaration_t *declaration = compound->scope.declarations;
3819 for( ; declaration != NULL; declaration = declaration->next) {
3820 create_local_declaration(declaration);
3823 ir_node *result = NULL;
3824 statement_t *statement = compound->statements;
3825 for( ; statement != NULL; statement = statement->base.next) {
3826 if(statement->base.next == NULL
3827 && statement->kind == STATEMENT_EXPRESSION) {
3828 result = expression_statement_to_firm(
3829 &statement->expression);
3832 statement_to_firm(statement);
3838 static void create_global_variable(declaration_t *declaration)
3842 switch ((storage_class_tag_t)declaration->storage_class) {
3843 case STORAGE_CLASS_STATIC:
3844 vis = visibility_local;
3847 case STORAGE_CLASS_EXTERN:
3848 vis = visibility_external_allocated;
3851 case STORAGE_CLASS_NONE:
3852 vis = visibility_external_visible;
3855 case STORAGE_CLASS_THREAD:
3856 vis = visibility_external_visible;
3859 case STORAGE_CLASS_THREAD_EXTERN:
3860 vis = visibility_external_allocated;
3863 case STORAGE_CLASS_THREAD_STATIC:
3864 vis = visibility_local;
3868 var_type = get_tls_type();
3872 var_type = get_glob_type();
3876 create_declaration_entity(declaration,
3877 DECLARATION_KIND_GLOBAL_VARIABLE,
3879 set_entity_visibility(declaration->v.entity, vis);
3883 case STORAGE_CLASS_TYPEDEF:
3884 case STORAGE_CLASS_AUTO:
3885 case STORAGE_CLASS_REGISTER:
3886 case STORAGE_CLASS_ENUM_ENTRY:
3889 panic("Invalid storage class for global variable");
3892 static void create_local_declaration(declaration_t *declaration)
3894 if (declaration->namespc != NAMESPACE_NORMAL)
3896 /* construct type */
3897 (void) get_ir_type(declaration->type);
3898 if (declaration->symbol == NULL) {
3902 type_t *type = skip_typeref(declaration->type);
3904 switch ((storage_class_tag_t) declaration->storage_class) {
3905 case STORAGE_CLASS_STATIC:
3906 create_local_static_variable(declaration);
3908 case STORAGE_CLASS_EXTERN:
3909 create_global_variable(declaration);
3910 create_declaration_initializer(declaration);
3912 case STORAGE_CLASS_NONE:
3913 case STORAGE_CLASS_AUTO:
3914 case STORAGE_CLASS_REGISTER:
3915 if(is_type_function(type)) {
3916 if(declaration->init.statement != NULL) {
3917 panic("nested functions not supported yet");
3919 get_function_entity(declaration);
3922 create_local_variable(declaration);
3925 case STORAGE_CLASS_ENUM_ENTRY:
3926 /* should already be handled */
3927 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
3929 case STORAGE_CLASS_TYPEDEF:
3930 declaration->declaration_kind = DECLARATION_KIND_TYPE;
3932 case STORAGE_CLASS_THREAD:
3933 case STORAGE_CLASS_THREAD_EXTERN:
3934 case STORAGE_CLASS_THREAD_STATIC:
3937 panic("invalid storage class found");
3940 static void initialize_local_declaration(declaration_t *declaration)
3942 if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
3945 switch ((declaration_kind_t) declaration->declaration_kind) {
3946 case DECLARATION_KIND_LOCAL_VARIABLE:
3947 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
3948 create_declaration_initializer(declaration);
3951 case DECLARATION_KIND_LABEL_BLOCK:
3952 case DECLARATION_KIND_COMPOUND_MEMBER:
3953 case DECLARATION_KIND_GLOBAL_VARIABLE:
3954 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
3955 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
3956 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
3957 case DECLARATION_KIND_FUNCTION:
3958 case DECLARATION_KIND_TYPE:
3959 case DECLARATION_KIND_ENUM_ENTRY:
3962 case DECLARATION_KIND_UNKNOWN:
3963 panic("can't initialize unknwon declaration");
3965 panic("invalid declaration kind");
3968 static void declaration_statement_to_firm(declaration_statement_t *statement)
3970 declaration_t *declaration = statement->declarations_begin;
3971 declaration_t *end = statement->declarations_end->next;
3972 for( ; declaration != end; declaration = declaration->next) {
3973 if(declaration->namespc != NAMESPACE_NORMAL)
3975 initialize_local_declaration(declaration);
3979 static void if_statement_to_firm(if_statement_t *statement)
3981 ir_node *cur_block = get_cur_block();
3983 ir_node *fallthrough_block = NULL;
3985 /* the true (blocks) */
3986 ir_node *true_block = NULL;
3987 if (statement->true_statement != NULL) {
3988 true_block = new_immBlock();
3989 statement_to_firm(statement->true_statement);
3990 if (get_cur_block() != NULL) {
3991 ir_node *jmp = new_Jmp();
3992 if (fallthrough_block == NULL)
3993 fallthrough_block = new_immBlock();
3994 add_immBlock_pred(fallthrough_block, jmp);
3998 /* the false (blocks) */
3999 ir_node *false_block = NULL;
4000 if (statement->false_statement != NULL) {
4001 false_block = new_immBlock();
4003 statement_to_firm(statement->false_statement);
4004 if (get_cur_block() != NULL) {
4005 ir_node *jmp = new_Jmp();
4006 if (fallthrough_block == NULL)
4007 fallthrough_block = new_immBlock();
4008 add_immBlock_pred(fallthrough_block, jmp);
4012 /* create the condition */
4013 if (cur_block != NULL) {
4014 if (true_block == NULL || false_block == NULL) {
4015 if (fallthrough_block == NULL)
4016 fallthrough_block = new_immBlock();
4017 if (true_block == NULL)
4018 true_block = fallthrough_block;
4019 if (false_block == NULL)
4020 false_block = fallthrough_block;
4023 set_cur_block(cur_block);
4024 create_condition_evaluation(statement->condition, true_block,
4028 mature_immBlock(true_block);
4029 if (false_block != fallthrough_block) {
4030 mature_immBlock(false_block);
4032 if (fallthrough_block != NULL) {
4033 mature_immBlock(fallthrough_block);
4036 set_cur_block(fallthrough_block);
4039 static void while_statement_to_firm(while_statement_t *statement)
4041 ir_node *jmp = NULL;
4042 if(get_cur_block() != NULL) {
4046 /* create the header block */
4047 ir_node *header_block = new_immBlock();
4049 add_immBlock_pred(header_block, jmp);
4052 /* the false block */
4053 ir_node *false_block = new_immBlock();
4056 ir_node *body_block;
4057 if (statement->body != NULL) {
4058 ir_node *old_continue_label = continue_label;
4059 ir_node *old_break_label = break_label;
4060 continue_label = header_block;
4061 break_label = false_block;
4063 body_block = new_immBlock();
4064 statement_to_firm(statement->body);
4066 assert(continue_label == header_block);
4067 assert(break_label == false_block);
4068 continue_label = old_continue_label;
4069 break_label = old_break_label;
4071 if(get_cur_block() != NULL) {
4073 add_immBlock_pred(header_block, jmp);
4076 body_block = header_block;
4079 /* create the condition */
4080 set_cur_block(header_block);
4082 create_condition_evaluation(statement->condition, body_block, false_block);
4083 mature_immBlock(body_block);
4084 mature_immBlock(false_block);
4085 mature_immBlock(header_block);
4087 set_cur_block(false_block);
4090 static void do_while_statement_to_firm(do_while_statement_t *statement)
4092 ir_node *jmp = NULL;
4093 if(get_cur_block() != NULL) {
4097 /* create the header block */
4098 ir_node *header_block = new_immBlock();
4100 /* the false block */
4101 ir_node *false_block = new_immBlock();
4104 ir_node *body_block = new_immBlock();
4106 add_immBlock_pred(body_block, jmp);
4109 if (statement->body != NULL) {
4110 ir_node *old_continue_label = continue_label;
4111 ir_node *old_break_label = break_label;
4112 continue_label = header_block;
4113 break_label = false_block;
4115 statement_to_firm(statement->body);
4117 assert(continue_label == header_block);
4118 assert(break_label == false_block);
4119 continue_label = old_continue_label;
4120 break_label = old_break_label;
4122 if (get_cur_block() == NULL) {
4123 mature_immBlock(header_block);
4124 mature_immBlock(body_block);
4125 mature_immBlock(false_block);
4130 ir_node *body_jmp = new_Jmp();
4131 add_immBlock_pred(header_block, body_jmp);
4132 mature_immBlock(header_block);
4134 /* create the condition */
4135 set_cur_block(header_block);
4137 create_condition_evaluation(statement->condition, body_block, false_block);
4138 mature_immBlock(body_block);
4139 mature_immBlock(false_block);
4140 mature_immBlock(header_block);
4142 set_cur_block(false_block);
4145 static void for_statement_to_firm(for_statement_t *statement)
4147 ir_node *jmp = NULL;
4149 /* create declarations */
4150 declaration_t *declaration = statement->scope.declarations;
4151 for( ; declaration != NULL; declaration = declaration->next) {
4152 create_local_declaration(declaration);
4154 declaration = statement->scope.declarations;
4155 for( ; declaration != NULL; declaration = declaration->next) {
4156 initialize_local_declaration(declaration);
4159 if (get_cur_block() != NULL) {
4160 if(statement->initialisation != NULL) {
4161 expression_to_firm(statement->initialisation);
4168 /* create the step block */
4169 ir_node *const step_block = new_immBlock();
4170 if (statement->step != NULL) {
4171 expression_to_firm(statement->step);
4173 ir_node *const step_jmp = new_Jmp();
4175 /* create the header block */
4176 ir_node *const header_block = new_immBlock();
4178 add_immBlock_pred(header_block, jmp);
4180 add_immBlock_pred(header_block, step_jmp);
4182 /* the false block */
4183 ir_node *const false_block = new_immBlock();
4186 ir_node * body_block;
4187 if (statement->body != NULL) {
4188 ir_node *const old_continue_label = continue_label;
4189 ir_node *const old_break_label = break_label;
4190 continue_label = step_block;
4191 break_label = false_block;
4193 body_block = new_immBlock();
4194 statement_to_firm(statement->body);
4196 assert(continue_label == step_block);
4197 assert(break_label == false_block);
4198 continue_label = old_continue_label;
4199 break_label = old_break_label;
4201 if (get_cur_block() != NULL) {
4203 add_immBlock_pred(step_block, jmp);
4206 body_block = step_block;
4209 /* create the condition */
4210 set_cur_block(header_block);
4211 if (statement->condition != NULL) {
4212 create_condition_evaluation(statement->condition, body_block,
4215 keep_alive(header_block);
4217 add_immBlock_pred(body_block, jmp);
4220 mature_immBlock(body_block);
4221 mature_immBlock(false_block);
4222 mature_immBlock(step_block);
4223 mature_immBlock(header_block);
4224 mature_immBlock(false_block);
4226 set_cur_block(false_block);
4229 static void create_jump_statement(const statement_t *statement,
4230 ir_node *target_block)
4232 if(get_cur_block() == NULL)
4235 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4236 ir_node *jump = new_d_Jmp(dbgi);
4237 add_immBlock_pred(target_block, jump);
4239 set_cur_block(NULL);
4242 static ir_node *get_break_label(void)
4244 if (break_label == NULL) {
4245 ir_node *cur_block = get_cur_block();
4246 break_label = new_immBlock();
4247 set_cur_block(cur_block);
4252 static void switch_statement_to_firm(const switch_statement_t *statement)
4254 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4256 ir_node *expression = expression_to_firm(statement->expression);
4257 ir_node *cond = new_d_Cond(dbgi, expression);
4259 set_cur_block(NULL);
4261 ir_node *const old_switch_cond = current_switch_cond;
4262 ir_node *const old_break_label = break_label;
4263 const bool old_saw_default_label = saw_default_label;
4264 saw_default_label = false;
4265 current_switch_cond = cond;
4268 if (statement->body != NULL) {
4269 statement_to_firm(statement->body);
4272 if (get_cur_block() != NULL) {
4273 ir_node *jmp = new_Jmp();
4274 add_immBlock_pred(get_break_label(), jmp);
4277 if (!saw_default_label) {
4278 set_cur_block(get_nodes_block(cond));
4279 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4280 MAGIC_DEFAULT_PN_NUMBER);
4281 add_immBlock_pred(get_break_label(), proj);
4284 if (break_label != NULL) {
4285 mature_immBlock(break_label);
4287 set_cur_block(break_label);
4289 assert(current_switch_cond == cond);
4290 current_switch_cond = old_switch_cond;
4291 break_label = old_break_label;
4292 saw_default_label = old_saw_default_label;
4295 static void case_label_to_firm(const case_label_statement_t *statement)
4297 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4299 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4301 /* let's create a node and hope firm constant folding creates a Const
4304 ir_node *old_block = get_nodes_block(current_switch_cond);
4305 ir_node *block = new_immBlock();
4307 set_cur_block(old_block);
4308 if(statement->expression != NULL) {
4309 long start_pn = fold_constant(statement->expression);
4310 long end_pn = start_pn;
4311 if (statement->end_range != NULL) {
4312 end_pn = fold_constant(statement->end_range);
4314 assert(start_pn <= end_pn);
4315 /* create jumps for all cases in the given range */
4316 for (long pn = start_pn; pn <= end_pn; ++pn) {
4317 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4318 /* oops someone detected our cheating... */
4319 panic("magic default pn used");
4321 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4322 add_immBlock_pred(block, proj);
4325 saw_default_label = true;
4326 proj = new_d_defaultProj(dbgi, current_switch_cond,
4327 MAGIC_DEFAULT_PN_NUMBER);
4329 add_immBlock_pred(block, proj);
4332 if (fallthrough != NULL) {
4333 add_immBlock_pred(block, fallthrough);
4335 mature_immBlock(block);
4336 set_cur_block(block);
4338 if(statement->statement != NULL) {
4339 statement_to_firm(statement->statement);
4343 static ir_node *get_label_block(declaration_t *label)
4345 assert(label->namespc == NAMESPACE_LABEL);
4347 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4348 return label->v.block;
4350 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4352 ir_node *old_cur_block = get_cur_block();
4353 ir_node *block = new_immBlock();
4354 set_cur_block(old_cur_block);
4356 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4357 label->v.block = block;
4359 ARR_APP1(ir_node *, imature_blocks, block);
4364 static void label_to_firm(const label_statement_t *statement)
4366 ir_node *block = get_label_block(statement->label);
4368 if(get_cur_block() != NULL) {
4369 ir_node *jmp = new_Jmp();
4370 add_immBlock_pred(block, jmp);
4373 set_cur_block(block);
4376 if(statement->statement != NULL) {
4377 statement_to_firm(statement->statement);
4381 static void goto_to_firm(const goto_statement_t *statement)
4383 if(get_cur_block() == NULL)
4386 ir_node *block = get_label_block(statement->label);
4387 ir_node *jmp = new_Jmp();
4388 add_immBlock_pred(block, jmp);
4390 set_cur_block(NULL);
4393 typedef enum modifier_t {
4394 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4395 ASM_MODIFIER_READ_WRITE = 1 << 1,
4396 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4397 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4400 static void asm_statement_to_firm(const asm_statement_t *statement)
4403 fprintf(stderr, "WARNING asm not implemented yet!\n");
4405 bool needs_memory = false;
4407 size_t n_clobbers = 0;
4408 asm_clobber_t *clobber = statement->clobbers;
4409 for( ; clobber != NULL; clobber = clobber->next) {
4410 if(strcmp(clobber->clobber, "memory") == 0) {
4411 needs_memory = true;
4415 ident *id = new_id_from_str(clobber->clobber);
4416 obstack_ptr_grow(&asm_obst, id);
4419 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4420 ident **clobbers = NULL;
4421 if(n_clobbers > 0) {
4422 clobbers = obstack_finish(&asm_obst);
4425 /* find and count input and output constraints */
4426 asm_constraint_t *constraint = statement->inputs;
4427 for( ; constraint != NULL; constraint = constraint->next) {
4429 bool supports_memop = false;
4430 for(const char *c = constraint->constraints; *c != 0; ++c) {
4431 /* TODO: improve error messages */
4435 panic("multiple alternative assembler constraints not "
4443 supports_memop = true;
4444 obstack_1grow(&asm_obst, *c);
4447 if(modifiers & ASM_MODIFIER_READ_WRITE)
4448 panic("inconsistent register constraints");
4449 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4452 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4453 panic("inconsistent register constraints");
4454 modifiers |= ASM_MODIFIER_READ_WRITE;
4457 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4458 panic("early clobber assembler constraint not supported yet");
4461 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4462 panic("commutative assembler constraint not supported yet");
4465 /* skip register preferences stuff... */
4466 while(*c != 0 && *c != ',')
4470 /* skip register preferences stuff... */
4474 obstack_1grow(&asm_obst, *c);
4478 obstack_1grow(&asm_obst, '\0');
4479 const char *constraint_string = obstack_finish(&asm_obst);
4481 needs_memory |= supports_memop;
4482 if(supports_memop) {
4489 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4490 statement_to_firm(statement->try_statement);
4491 warningf(&statement->base.source_position, "structured exception handling ignored");
4494 static void leave_statement_to_firm(leave_statement_t *statement) {
4495 errorf(&statement->base.source_position, "__leave not supported yet");
4499 * Transform a statement.
4501 static void statement_to_firm(statement_t *statement)
4504 assert(!statement->base.transformed);
4505 statement->base.transformed = true;
4508 switch(statement->kind) {
4509 case STATEMENT_INVALID:
4510 panic("invalid statement found");
4512 case STATEMENT_EMPTY:
4515 case STATEMENT_COMPOUND:
4516 compound_statement_to_firm(&statement->compound);
4518 case STATEMENT_RETURN:
4519 return_statement_to_firm(&statement->returns);
4521 case STATEMENT_EXPRESSION:
4522 expression_statement_to_firm(&statement->expression);
4525 if_statement_to_firm(&statement->ifs);
4527 case STATEMENT_WHILE:
4528 while_statement_to_firm(&statement->whiles);
4530 case STATEMENT_DO_WHILE:
4531 do_while_statement_to_firm(&statement->do_while);
4533 case STATEMENT_DECLARATION:
4534 declaration_statement_to_firm(&statement->declaration);
4536 case STATEMENT_BREAK:
4537 create_jump_statement(statement, get_break_label());
4539 case STATEMENT_CONTINUE:
4540 create_jump_statement(statement, continue_label);
4542 case STATEMENT_SWITCH:
4543 switch_statement_to_firm(&statement->switchs);
4545 case STATEMENT_CASE_LABEL:
4546 case_label_to_firm(&statement->case_label);
4549 for_statement_to_firm(&statement->fors);
4551 case STATEMENT_LABEL:
4552 label_to_firm(&statement->label);
4554 case STATEMENT_GOTO:
4555 goto_to_firm(&statement->gotos);
4558 asm_statement_to_firm(&statement->asms);
4560 case STATEMENT_MS_TRY:
4561 ms_try_statement_to_firm(&statement->ms_try);
4563 case STATEMENT_LEAVE:
4564 leave_statement_to_firm(&statement->leave);
4567 panic("Statement not implemented\n");
4570 static int count_decls_in_expression(const expression_t *expression);
4572 static int count_local_declarations(const declaration_t * decl,
4573 const declaration_t *const end)
4576 for (; decl != end; decl = decl->next) {
4577 if(decl->namespc != NAMESPACE_NORMAL)
4579 const type_t *type = skip_typeref(decl->type);
4580 if (!decl->address_taken && is_type_scalar(type))
4582 const initializer_t *initializer = decl->init.initializer;
4583 /* FIXME: should walk initializer hierarchies... */
4584 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4585 count += count_decls_in_expression(initializer->value.value);
4591 static int count_decls_in_expression(const expression_t *expression) {
4594 if(expression == NULL)
4597 switch((expression_kind_t) expression->base.kind) {
4598 case EXPR_STATEMENT:
4599 return count_decls_in_stmts(expression->statement.statement);
4601 int count_left = count_decls_in_expression(expression->binary.left);
4602 int count_right = count_decls_in_expression(expression->binary.right);
4603 return count_left + count_right;
4606 return count_decls_in_expression(expression->unary.value);
4608 call_argument_t *argument = expression->call.arguments;
4609 for( ; argument != NULL; argument = argument->next) {
4610 count += count_decls_in_expression(argument->expression);
4617 panic("unexpected expression kind");
4619 case EXPR_COMPOUND_LITERAL:
4623 case EXPR_CONDITIONAL:
4624 count += count_decls_in_expression(expression->conditional.condition);
4625 count += count_decls_in_expression(expression->conditional.true_expression);
4626 count += count_decls_in_expression(expression->conditional.false_expression);
4629 case EXPR_BUILTIN_PREFETCH:
4630 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4631 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4632 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4635 case EXPR_BUILTIN_CONSTANT_P:
4636 count += count_decls_in_expression(expression->builtin_constant.value);
4640 count += count_decls_in_expression(expression->select.compound);
4643 case EXPR_ARRAY_ACCESS:
4644 count += count_decls_in_expression(expression->array_access.array_ref);
4645 count += count_decls_in_expression(expression->array_access.index);
4648 case EXPR_CLASSIFY_TYPE:
4649 count += count_decls_in_expression(expression->classify_type.type_expression);
4653 case EXPR_ALIGNOF: {
4654 expression_t *tp_expression = expression->typeprop.tp_expression;
4655 if (tp_expression != NULL) {
4656 count += count_decls_in_expression(tp_expression);
4662 case EXPR_REFERENCE:
4664 case EXPR_CHARACTER_CONSTANT:
4665 case EXPR_WIDE_CHARACTER_CONSTANT:
4666 case EXPR_STRING_LITERAL:
4667 case EXPR_WIDE_STRING_LITERAL:
4669 case EXPR_BUILTIN_SYMBOL:
4675 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4676 * (or implement all the missing expressions here/implement a walker)
4682 static int count_decls_in_stmts(const statement_t *stmt)
4685 for (; stmt != NULL; stmt = stmt->base.next) {
4686 switch (stmt->kind) {
4687 case STATEMENT_EMPTY:
4690 case STATEMENT_DECLARATION: {
4691 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4692 count += count_local_declarations(decl_stmt->declarations_begin,
4693 decl_stmt->declarations_end->next);
4697 case STATEMENT_COMPOUND: {
4698 const compound_statement_t *const comp =
4700 count += count_decls_in_stmts(comp->statements);
4704 case STATEMENT_IF: {
4705 const if_statement_t *const if_stmt = &stmt->ifs;
4706 count += count_decls_in_expression(if_stmt->condition);
4707 count += count_decls_in_stmts(if_stmt->true_statement);
4708 count += count_decls_in_stmts(if_stmt->false_statement);
4712 case STATEMENT_SWITCH: {
4713 const switch_statement_t *const switch_stmt = &stmt->switchs;
4714 count += count_decls_in_expression(switch_stmt->expression);
4715 count += count_decls_in_stmts(switch_stmt->body);
4719 case STATEMENT_LABEL: {
4720 const label_statement_t *const label_stmt = &stmt->label;
4721 if(label_stmt->statement != NULL) {
4722 count += count_decls_in_stmts(label_stmt->statement);
4727 case STATEMENT_WHILE: {
4728 const while_statement_t *const while_stmt = &stmt->whiles;
4729 count += count_decls_in_expression(while_stmt->condition);
4730 count += count_decls_in_stmts(while_stmt->body);
4734 case STATEMENT_DO_WHILE: {
4735 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4736 count += count_decls_in_expression(do_while_stmt->condition);
4737 count += count_decls_in_stmts(do_while_stmt->body);
4741 case STATEMENT_FOR: {
4742 const for_statement_t *const for_stmt = &stmt->fors;
4743 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4744 count += count_decls_in_expression(for_stmt->initialisation);
4745 count += count_decls_in_expression(for_stmt->condition);
4746 count += count_decls_in_expression(for_stmt->step);
4747 count += count_decls_in_stmts(for_stmt->body);
4751 case STATEMENT_CASE_LABEL: {
4752 const case_label_statement_t *label = &stmt->case_label;
4753 count += count_decls_in_expression(label->expression);
4754 if(label->statement != NULL) {
4755 count += count_decls_in_stmts(label->statement);
4761 case STATEMENT_BREAK:
4762 case STATEMENT_CONTINUE:
4765 case STATEMENT_EXPRESSION: {
4766 const expression_statement_t *expr_stmt = &stmt->expression;
4767 count += count_decls_in_expression(expr_stmt->expression);
4771 case STATEMENT_GOTO:
4772 case STATEMENT_LEAVE:
4773 case STATEMENT_INVALID:
4776 case STATEMENT_RETURN: {
4777 const return_statement_t *ret_stmt = &stmt->returns;
4778 count += count_decls_in_expression(ret_stmt->value);
4782 case STATEMENT_MS_TRY: {
4783 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4784 count += count_decls_in_stmts(try_stmt->try_statement);
4785 if(try_stmt->except_expression != NULL)
4786 count += count_decls_in_expression(try_stmt->except_expression);
4787 count += count_decls_in_stmts(try_stmt->final_statement);
4795 static int get_function_n_local_vars(declaration_t *declaration)
4799 /* count parameters */
4800 count += count_local_declarations(declaration->scope.declarations, NULL);
4802 /* count local variables declared in body */
4803 count += count_decls_in_stmts(declaration->init.statement);
4808 static void initialize_function_parameters(declaration_t *declaration)
4810 ir_graph *irg = current_ir_graph;
4811 ir_node *args = get_irg_args(irg);
4812 ir_node *start_block = get_irg_start_block(irg);
4813 ir_type *function_irtype = get_ir_type(declaration->type);
4816 declaration_t *parameter = declaration->scope.declarations;
4817 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4818 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4819 type_t *type = skip_typeref(parameter->type);
4821 bool needs_entity = parameter->address_taken;
4822 assert(!is_type_array(type));
4823 if(is_type_compound(type)) {
4824 needs_entity = true;
4828 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4829 ident *id = new_id_from_str(parameter->symbol->string);
4830 set_entity_ident(entity, id);
4832 parameter->declaration_kind
4833 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4834 parameter->v.entity = entity;
4838 ir_type *param_irtype = get_method_param_type(function_irtype, n);
4839 ir_mode *param_mode = get_type_mode(param_irtype);
4842 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
4844 ir_mode *mode = get_ir_mode(parameter->type);
4845 value = create_conv(NULL, value, mode);
4846 value = do_strict_conv(NULL, value);
4848 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4849 parameter->v.value_number = next_value_number_function;
4850 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4851 ++next_value_number_function;
4853 set_value(parameter->v.value_number, value);
4858 * Handle additional decl modifiers for IR-graphs
4860 * @param irg the IR-graph
4861 * @param dec_modifiers additional modifiers
4863 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4865 if (decl_modifiers & DM_NORETURN) {
4866 /* TRUE if the declaration includes the Microsoft
4867 __declspec(noreturn) specifier. */
4868 set_irg_additional_property(irg, mtp_property_noreturn);
4870 if (decl_modifiers & DM_NOTHROW) {
4871 /* TRUE if the declaration includes the Microsoft
4872 __declspec(nothrow) specifier. */
4873 set_irg_additional_property(irg, mtp_property_nothrow);
4875 if (decl_modifiers & DM_NAKED) {
4876 /* TRUE if the declaration includes the Microsoft
4877 __declspec(naked) specifier. */
4878 set_irg_additional_property(irg, mtp_property_naked);
4880 if (decl_modifiers & DM_FORCEINLINE) {
4881 /* TRUE if the declaration includes the
4882 Microsoft __forceinline specifier. */
4883 set_irg_inline_property(irg, irg_inline_forced);
4885 if (decl_modifiers & DM_NOINLINE) {
4886 /* TRUE if the declaration includes the Microsoft
4887 __declspec(noinline) specifier. */
4888 set_irg_inline_property(irg, irg_inline_forbidden);
4893 * Create code for a function.
4895 static void create_function(declaration_t *declaration)
4897 ir_entity *function_entity = get_function_entity(declaration);
4899 if(declaration->init.statement == NULL)
4902 current_function_decl = declaration;
4903 current_function_name = NULL;
4904 current_funcsig = NULL;
4906 assert(imature_blocks == NULL);
4907 imature_blocks = NEW_ARR_F(ir_node*, 0);
4909 int n_local_vars = get_function_n_local_vars(declaration);
4910 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4912 set_irg_fp_model(irg, firm_opt.fp_model);
4913 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4914 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4916 ir_node *first_block = get_cur_block();
4918 /* set inline flags */
4919 if (declaration->is_inline)
4920 set_irg_inline_property(irg, irg_inline_recomended);
4921 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4923 next_value_number_function = 0;
4924 initialize_function_parameters(declaration);
4926 statement_to_firm(declaration->init.statement);
4928 ir_node *end_block = get_irg_end_block(irg);
4930 /* do we have a return statement yet? */
4931 if(get_cur_block() != NULL) {
4932 type_t *type = skip_typeref(declaration->type);
4933 assert(is_type_function(type));
4934 const function_type_t *func_type = &type->function;
4935 const type_t *return_type
4936 = skip_typeref(func_type->return_type);
4939 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4940 ret = new_Return(get_store(), 0, NULL);
4943 if(is_type_scalar(return_type)) {
4944 mode = get_ir_mode(func_type->return_type);
4950 /* ยง5.1.2.2.3 main implicitly returns 0 */
4951 if (strcmp(declaration->symbol->string, "main") == 0) {
4952 in[0] = new_Const(mode, get_mode_null(mode));
4954 in[0] = new_Unknown(mode);
4955 if(warning.return_type) {
4956 warningf(&declaration->source_position,
4957 "missing return statement at end of non-void function '%Y'",
4958 declaration->symbol);
4961 ret = new_Return(get_store(), 1, in);
4963 add_immBlock_pred(end_block, ret);
4966 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4967 mature_immBlock(imature_blocks[i]);
4969 DEL_ARR_F(imature_blocks);
4970 imature_blocks = NULL;
4972 mature_immBlock(first_block);
4973 mature_immBlock(end_block);
4975 irg_finalize_cons(irg);
4977 /* finalize the frame type */
4978 ir_type *frame_type = get_irg_frame_type(irg);
4979 int n = get_compound_n_members(frame_type);
4982 for(int i = 0; i < n; ++i) {
4983 ir_entity *entity = get_compound_member(frame_type, i);
4984 ir_type *entity_type = get_entity_type(entity);
4986 int align = get_type_alignment_bytes(entity_type);
4987 if(align > align_all)
4991 misalign = offset % align;
4993 offset += align - misalign;
4997 set_entity_offset(entity, offset);
4998 offset += get_type_size_bytes(entity_type);
5000 set_type_size_bytes(frame_type, offset);
5001 set_type_alignment_bytes(frame_type, align_all);
5006 static void scope_to_firm(scope_t *scope)
5008 /* first pass: create declarations */
5009 declaration_t *declaration = scope->declarations;
5010 for( ; declaration != NULL; declaration = declaration->next) {
5011 if(declaration->namespc != NAMESPACE_NORMAL)
5013 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5014 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5016 if(declaration->symbol == NULL)
5019 type_t *type = skip_typeref(declaration->type);
5020 if(is_type_function(type)) {
5021 get_function_entity(declaration);
5023 create_global_variable(declaration);
5027 /* second pass: create code/initializers */
5028 declaration = scope->declarations;
5029 for( ; declaration != NULL; declaration = declaration->next) {
5030 if(declaration->namespc != NAMESPACE_NORMAL)
5032 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5033 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5035 if(declaration->symbol == NULL)
5038 type_t *type = declaration->type;
5039 if(type->kind == TYPE_FUNCTION) {
5040 create_function(declaration);
5042 assert(declaration->declaration_kind
5043 == DECLARATION_KIND_GLOBAL_VARIABLE);
5044 current_ir_graph = get_const_code_irg();
5045 create_declaration_initializer(declaration);
5050 void init_ast2firm(void)
5052 obstack_init(&asm_obst);
5053 init_atomic_modes();
5055 id_underscore = new_id_from_chars("_", 1);
5056 id_imp = new_id_from_chars("__imp_", 6);
5058 /* OS option must be set to the backend */
5059 const char *s = "ia32-gasmode=linux";
5060 switch (firm_opt.os_support) {
5061 case OS_SUPPORT_MINGW:
5062 create_ld_ident = create_ld_ident_win32;
5063 s = "ia32-gasmode=mingw";
5065 case OS_SUPPORT_LINUX:
5066 create_ld_ident = create_ld_ident_linux_elf;
5067 s = "ia32-gasmode=linux"; break;
5069 case OS_SUPPORT_MACHO:
5070 create_ld_ident = create_ld_ident_macho;
5071 s = "ia32-gasmode=macho"; break;
5076 /* create idents for all known runtime functions */
5077 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5078 rts_idents[i] = new_id_from_str(rts_data[i].name);
5082 static void init_ir_types(void)
5084 static int ir_types_initialized = 0;
5085 if(ir_types_initialized)
5087 ir_types_initialized = 1;
5089 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5090 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5091 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5093 ir_type_int = get_ir_type(type_int);
5094 ir_type_const_char = get_ir_type(type_const_char);
5095 ir_type_wchar_t = get_ir_type(type_wchar_t);
5096 ir_type_void = get_ir_type(type_void);
5099 void exit_ast2firm(void)
5101 obstack_free(&asm_obst, NULL);
5104 void translation_unit_to_firm(translation_unit_t *unit)
5106 /* just to be sure */
5107 continue_label = NULL;
5109 current_switch_cond = NULL;
5113 scope_to_firm(&unit->scope);