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 expression_t *const ap_expr = expr->ap;
2757 ir_node *const ap_addr = expression_to_addr(ap_expr);
2758 ir_node *const ap = get_value_from_lvalue(ap_expr, ap_addr);
2759 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2760 ir_node *const res = deref_address(dbgi, type, ap);
2762 ir_node *const cnst = get_type_size(expr->base.type);
2763 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2765 set_value_for_expression_addr(ap_expr, add, ap_addr);
2770 static ir_node *dereference_addr(const unary_expression_t *const expression)
2772 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2773 return expression_to_firm(expression->value);
2777 * Returns a IR-node representing an lvalue of the given expression.
2779 static ir_node *expression_to_addr(const expression_t *expression)
2781 switch(expression->kind) {
2782 case EXPR_REFERENCE:
2783 return reference_addr(&expression->reference);
2784 case EXPR_ARRAY_ACCESS:
2785 return array_access_addr(&expression->array_access);
2787 return select_addr(&expression->select);
2789 return call_expression_to_firm(&expression->call);
2790 case EXPR_UNARY_DEREFERENCE: {
2791 return dereference_addr(&expression->unary);
2796 panic("trying to get address of non-lvalue");
2799 static ir_node *builtin_constant_to_firm(
2800 const builtin_constant_expression_t *expression)
2802 ir_mode *mode = get_ir_mode(expression->base.type);
2805 if (is_constant_expression(expression->value)) {
2810 return new_Const_long(mode, v);
2813 static ir_node *builtin_prefetch_to_firm(
2814 const builtin_prefetch_expression_t *expression)
2816 ir_node *adr = expression_to_firm(expression->adr);
2817 /* no Firm support for prefetch yet */
2823 * creates firm nodes for an expression. The difference between this function
2824 * and expression_to_firm is, that this version might produce mode_b nodes
2825 * instead of mode_Is.
2827 static ir_node *_expression_to_firm(const expression_t *expression)
2830 if (!constant_folding) {
2831 assert(!expression->base.transformed);
2832 ((expression_t*) expression)->base.transformed = true;
2836 switch(expression->kind) {
2837 case EXPR_CHARACTER_CONSTANT:
2838 return character_constant_to_firm(&expression->conste);
2839 case EXPR_WIDE_CHARACTER_CONSTANT:
2840 return wide_character_constant_to_firm(&expression->conste);
2842 return const_to_firm(&expression->conste);
2843 case EXPR_STRING_LITERAL:
2844 return string_literal_to_firm(&expression->string);
2845 case EXPR_WIDE_STRING_LITERAL:
2846 return wide_string_literal_to_firm(&expression->wide_string);
2847 case EXPR_REFERENCE:
2848 return reference_expression_to_firm(&expression->reference);
2850 return call_expression_to_firm(&expression->call);
2852 return unary_expression_to_firm(&expression->unary);
2854 return binary_expression_to_firm(&expression->binary);
2855 case EXPR_ARRAY_ACCESS:
2856 return array_access_to_firm(&expression->array_access);
2858 return sizeof_to_firm(&expression->typeprop);
2860 return alignof_to_firm(&expression->typeprop);
2861 case EXPR_CONDITIONAL:
2862 return conditional_to_firm(&expression->conditional);
2864 return select_to_firm(&expression->select);
2865 case EXPR_CLASSIFY_TYPE:
2866 return classify_type_to_firm(&expression->classify_type);
2868 return function_name_to_firm(&expression->funcname);
2869 case EXPR_STATEMENT:
2870 return statement_expression_to_firm(&expression->statement);
2872 return va_start_expression_to_firm(&expression->va_starte);
2874 return va_arg_expression_to_firm(&expression->va_arge);
2875 case EXPR_BUILTIN_SYMBOL:
2876 panic("unimplemented expression found");
2877 case EXPR_BUILTIN_CONSTANT_P:
2878 return builtin_constant_to_firm(&expression->builtin_constant);
2879 case EXPR_BUILTIN_PREFETCH:
2880 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2882 return offsetof_to_firm(&expression->offsetofe);
2883 case EXPR_COMPOUND_LITERAL:
2884 return compound_literal_to_firm(&expression->compound_literal);
2890 panic("invalid expression found");
2893 static bool produces_mode_b(const expression_t *expression)
2895 switch (expression->kind) {
2896 case EXPR_BINARY_EQUAL:
2897 case EXPR_BINARY_NOTEQUAL:
2898 case EXPR_BINARY_LESS:
2899 case EXPR_BINARY_LESSEQUAL:
2900 case EXPR_BINARY_GREATER:
2901 case EXPR_BINARY_GREATEREQUAL:
2902 case EXPR_BINARY_ISGREATER:
2903 case EXPR_BINARY_ISGREATEREQUAL:
2904 case EXPR_BINARY_ISLESS:
2905 case EXPR_BINARY_ISLESSEQUAL:
2906 case EXPR_BINARY_ISLESSGREATER:
2907 case EXPR_BINARY_ISUNORDERED:
2908 case EXPR_UNARY_NOT:
2911 case EXPR_BINARY_BUILTIN_EXPECT:
2912 return produces_mode_b(expression->binary.left);
2919 static ir_node *expression_to_firm(const expression_t *expression)
2921 if (!produces_mode_b(expression)) {
2922 ir_node *res = _expression_to_firm(expression);
2923 assert(res == NULL || get_irn_mode(res) != mode_b);
2927 if (is_constant_expression(expression)) {
2928 ir_node *res = _expression_to_firm(expression);
2929 ir_mode *mode = get_ir_mode(expression->base.type);
2930 assert(is_Const(res));
2931 if (is_Const_null(res)) {
2932 return new_Const_long(mode, 0);
2934 return new_Const_long(mode, 1);
2938 /* we have to produce a 0/1 from the mode_b expression */
2939 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2940 return produce_condition_result(expression, dbgi);
2943 static ir_node *expression_to_modeb(const expression_t *expression)
2945 ir_node *res = _expression_to_firm(expression);
2946 res = create_conv(NULL, res, mode_b);
2952 * create a short-circuit expression evaluation that tries to construct
2953 * efficient control flow structures for &&, || and ! expressions
2955 static void create_condition_evaluation(const expression_t *expression,
2956 ir_node *true_block,
2957 ir_node *false_block)
2959 switch(expression->kind) {
2960 case EXPR_UNARY_NOT: {
2961 const unary_expression_t *unary_expression = &expression->unary;
2962 create_condition_evaluation(unary_expression->value, false_block,
2966 case EXPR_BINARY_LOGICAL_AND: {
2967 const binary_expression_t *binary_expression = &expression->binary;
2969 ir_node *cur_block = get_cur_block();
2970 ir_node *extra_block = new_immBlock();
2971 set_cur_block(cur_block);
2972 create_condition_evaluation(binary_expression->left, extra_block,
2974 mature_immBlock(extra_block);
2975 set_cur_block(extra_block);
2976 create_condition_evaluation(binary_expression->right, true_block,
2980 case EXPR_BINARY_LOGICAL_OR: {
2981 const binary_expression_t *binary_expression = &expression->binary;
2983 ir_node *cur_block = get_cur_block();
2984 ir_node *extra_block = new_immBlock();
2985 set_cur_block(cur_block);
2986 create_condition_evaluation(binary_expression->left, true_block,
2988 mature_immBlock(extra_block);
2989 set_cur_block(extra_block);
2990 create_condition_evaluation(binary_expression->right, true_block,
2998 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2999 ir_node *condition = expression_to_modeb(expression);
3000 ir_node *cond = new_d_Cond(dbgi, condition);
3001 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
3002 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
3004 /* set branch prediction info based on __builtin_expect */
3005 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
3006 long cnst = fold_constant(expression->binary.right);
3007 cond_jmp_predicate pred;
3010 pred = COND_JMP_PRED_FALSE;
3012 pred = COND_JMP_PRED_TRUE;
3014 set_Cond_jmp_pred(cond, pred);
3017 add_immBlock_pred(true_block, true_proj);
3018 add_immBlock_pred(false_block, false_proj);
3020 set_cur_block(NULL);
3025 static void create_declaration_entity(declaration_t *declaration,
3026 declaration_kind_t declaration_kind,
3027 ir_type *parent_type)
3029 ident *const id = new_id_from_str(declaration->symbol->string);
3030 type_t *const type = skip_typeref(declaration->type);
3031 ir_type *const irtype = get_ir_type(type);
3032 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3033 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
3035 declaration->declaration_kind = (unsigned char) declaration_kind;
3036 declaration->v.entity = entity;
3037 set_entity_variability(entity, variability_uninitialized);
3038 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3039 if(parent_type == get_tls_type())
3040 set_entity_allocation(entity, allocation_automatic);
3041 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
3042 set_entity_allocation(entity, allocation_static);
3044 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3045 set_entity_volatility(entity, volatility_is_volatile);
3050 typedef struct type_path_entry_t type_path_entry_t;
3051 struct type_path_entry_t {
3053 ir_initializer_t *initializer;
3055 declaration_t *compound_entry;
3058 typedef struct type_path_t type_path_t;
3059 struct type_path_t {
3060 type_path_entry_t *path;
3065 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
3067 size_t len = ARR_LEN(path->path);
3069 for(size_t i = 0; i < len; ++i) {
3070 const type_path_entry_t *entry = & path->path[i];
3072 type_t *type = skip_typeref(entry->type);
3073 if(is_type_compound(type)) {
3074 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
3075 } else if(is_type_array(type)) {
3076 fprintf(stderr, "[%zd]", entry->index);
3078 fprintf(stderr, "-INVALID-");
3081 fprintf(stderr, " (");
3082 print_type(path->top_type);
3083 fprintf(stderr, ")");
3086 static type_path_entry_t *get_type_path_top(const type_path_t *path)
3088 size_t len = ARR_LEN(path->path);
3090 return & path->path[len-1];
3093 static type_path_entry_t *append_to_type_path(type_path_t *path)
3095 size_t len = ARR_LEN(path->path);
3096 ARR_RESIZE(type_path_entry_t, path->path, len+1);
3098 type_path_entry_t *result = & path->path[len];
3099 memset(result, 0, sizeof(result[0]));
3103 static size_t get_compound_size(const compound_type_t *type)
3105 declaration_t *declaration = type->declaration;
3106 declaration_t *member = declaration->scope.declarations;
3108 for( ; member != NULL; member = member->next) {
3111 /* TODO: cache results? */
3116 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3118 type_t *orig_top_type = path->top_type;
3119 type_t *top_type = skip_typeref(orig_top_type);
3121 assert(is_type_compound(top_type) || is_type_array(top_type));
3123 if(ARR_LEN(path->path) == 0) {
3126 type_path_entry_t *top = get_type_path_top(path);
3127 ir_initializer_t *initializer = top->initializer;
3128 return get_initializer_compound_value(initializer, top->index);
3132 static void descend_into_subtype(type_path_t *path)
3134 type_t *orig_top_type = path->top_type;
3135 type_t *top_type = skip_typeref(orig_top_type);
3137 assert(is_type_compound(top_type) || is_type_array(top_type));
3139 ir_initializer_t *initializer = get_initializer_entry(path);
3141 type_path_entry_t *top = append_to_type_path(path);
3142 top->type = top_type;
3146 if(is_type_compound(top_type)) {
3147 declaration_t *declaration = top_type->compound.declaration;
3148 declaration_t *entry = declaration->scope.declarations;
3150 top->compound_entry = entry;
3152 len = get_compound_size(&top_type->compound);
3154 path->top_type = entry->type;
3156 assert(is_type_array(top_type));
3157 assert(top_type->array.size > 0);
3160 path->top_type = top_type->array.element_type;
3161 len = top_type->array.size;
3163 if(initializer == NULL
3164 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3165 initializer = create_initializer_compound(len);
3166 /* we have to set the entry at the 2nd latest path entry... */
3167 size_t path_len = ARR_LEN(path->path);
3168 assert(path_len >= 1);
3170 type_path_entry_t *entry = & path->path[path_len-2];
3171 ir_initializer_t *tinitializer = entry->initializer;
3172 set_initializer_compound_value(tinitializer, entry->index,
3176 top->initializer = initializer;
3179 static void ascend_from_subtype(type_path_t *path)
3181 type_path_entry_t *top = get_type_path_top(path);
3183 path->top_type = top->type;
3185 size_t len = ARR_LEN(path->path);
3186 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3189 static void walk_designator(type_path_t *path, const designator_t *designator)
3191 /* designators start at current object type */
3192 ARR_RESIZE(type_path_entry_t, path->path, 1);
3194 for( ; designator != NULL; designator = designator->next) {
3195 type_path_entry_t *top = get_type_path_top(path);
3196 type_t *orig_type = top->type;
3197 type_t *type = skip_typeref(orig_type);
3199 if(designator->symbol != NULL) {
3200 assert(is_type_compound(type));
3202 symbol_t *symbol = designator->symbol;
3204 declaration_t *declaration = type->compound.declaration;
3205 declaration_t *iter = declaration->scope.declarations;
3206 for( ; iter != NULL; iter = iter->next, ++index) {
3207 if(iter->symbol == symbol) {
3211 assert(iter != NULL);
3213 top->type = orig_type;
3214 top->compound_entry = iter;
3216 orig_type = iter->type;
3218 expression_t *array_index = designator->array_index;
3219 assert(designator->array_index != NULL);
3220 assert(is_type_array(type));
3221 assert(is_type_valid(array_index->base.type));
3223 long index = fold_constant(array_index);
3226 if(type->array.size_constant == 1) {
3227 long array_size = type->array.size;
3228 assert(index < array_size);
3232 top->type = orig_type;
3233 top->index = (size_t) index;
3234 orig_type = type->array.element_type;
3236 path->top_type = orig_type;
3238 if(designator->next != NULL) {
3239 descend_into_subtype(path);
3243 path->invalid = false;
3246 static void advance_current_object(type_path_t *path)
3249 /* TODO: handle this... */
3250 panic("invalid initializer in ast2firm (excessive elements)");
3254 type_path_entry_t *top = get_type_path_top(path);
3256 type_t *type = skip_typeref(top->type);
3257 if(is_type_union(type)) {
3258 top->compound_entry = NULL;
3259 } else if(is_type_struct(type)) {
3260 declaration_t *entry = top->compound_entry;
3263 entry = entry->next;
3264 top->compound_entry = entry;
3266 path->top_type = entry->type;
3270 assert(is_type_array(type));
3273 if(!type->array.size_constant || top->index < type->array.size) {
3278 /* we're past the last member of the current sub-aggregate, try if we
3279 * can ascend in the type hierarchy and continue with another subobject */
3280 size_t len = ARR_LEN(path->path);
3283 ascend_from_subtype(path);
3284 advance_current_object(path);
3286 path->invalid = true;
3291 static ir_initializer_t *create_ir_initializer(
3292 const initializer_t *initializer, type_t *type);
3294 static ir_initializer_t *create_ir_initializer_value(
3295 const initializer_value_t *initializer)
3297 if (is_type_compound(initializer->value->base.type)) {
3298 panic("initializer creation for compounds not implemented yet");
3300 ir_node *value = expression_to_firm(initializer->value);
3301 return create_initializer_const(value);
3304 static ir_initializer_t *create_ir_initializer_list(
3305 const initializer_list_t *initializer, type_t *type)
3308 memset(&path, 0, sizeof(path));
3309 path.top_type = type;
3310 path.path = NEW_ARR_F(type_path_entry_t, 0);
3312 descend_into_subtype(&path);
3314 for(size_t i = 0; i < initializer->len; ++i) {
3315 const initializer_t *sub_initializer = initializer->initializers[i];
3317 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3318 walk_designator(&path, sub_initializer->designator.designator);
3322 if(sub_initializer->kind == INITIALIZER_VALUE) {
3323 /* we might have to descend into types until we're at a scalar
3326 type_t *orig_top_type = path.top_type;
3327 type_t *top_type = skip_typeref(orig_top_type);
3329 if(is_type_scalar(top_type))
3331 descend_into_subtype(&path);
3335 ir_initializer_t *sub_irinitializer
3336 = create_ir_initializer(sub_initializer, path.top_type);
3338 size_t path_len = ARR_LEN(path.path);
3339 assert(path_len >= 1);
3340 type_path_entry_t *entry = & path.path[path_len-1];
3341 ir_initializer_t *tinitializer = entry->initializer;
3342 set_initializer_compound_value(tinitializer, entry->index,
3345 advance_current_object(&path);
3348 assert(ARR_LEN(path.path) >= 1);
3349 ir_initializer_t *result = path.path[0].initializer;
3350 DEL_ARR_F(path.path);
3355 static ir_initializer_t *create_ir_initializer_string(
3356 const initializer_string_t *initializer, type_t *type)
3358 type = skip_typeref(type);
3360 size_t string_len = initializer->string.size;
3361 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3362 size_t len = type->array.size;
3363 ir_initializer_t *irinitializer = create_initializer_compound(len);
3365 const char *string = initializer->string.begin;
3366 ir_mode *mode = get_type_mode(ir_type_const_char);
3368 for(size_t i = 0; i < len; ++i) {
3373 tarval *tv = new_tarval_from_long(c, mode);
3374 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3376 set_initializer_compound_value(irinitializer, i, char_initializer);
3379 return irinitializer;
3382 static ir_initializer_t *create_ir_initializer_wide_string(
3383 const initializer_wide_string_t *initializer, type_t *type)
3385 size_t string_len = initializer->string.size;
3386 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3387 size_t len = type->array.size;
3388 ir_initializer_t *irinitializer = create_initializer_compound(len);
3390 const wchar_rep_t *string = initializer->string.begin;
3391 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3393 for(size_t i = 0; i < len; ++i) {
3395 if(i < string_len) {
3398 tarval *tv = new_tarval_from_long(c, mode);
3399 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3401 set_initializer_compound_value(irinitializer, i, char_initializer);
3404 return irinitializer;
3407 static ir_initializer_t *create_ir_initializer(
3408 const initializer_t *initializer, type_t *type)
3410 switch(initializer->kind) {
3411 case INITIALIZER_STRING:
3412 return create_ir_initializer_string(&initializer->string, type);
3414 case INITIALIZER_WIDE_STRING:
3415 return create_ir_initializer_wide_string(&initializer->wide_string,
3418 case INITIALIZER_LIST:
3419 return create_ir_initializer_list(&initializer->list, type);
3421 case INITIALIZER_VALUE:
3422 return create_ir_initializer_value(&initializer->value);
3424 case INITIALIZER_DESIGNATOR:
3425 panic("unexpected designator initializer found");
3427 panic("unknown initializer");
3430 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3433 if (is_atomic_type(type)) {
3434 ir_mode *mode = get_type_mode(type);
3435 tarval *zero = get_mode_null(mode);
3436 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3438 /* TODO: bitfields */
3439 ir_node *mem = get_store();
3440 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3441 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3444 assert(is_compound_type(type));
3447 if(is_Array_type(type)) {
3448 assert(has_array_upper_bound(type, 0));
3449 n_members = get_array_upper_bound_int(type, 0);
3451 n_members = get_compound_n_members(type);
3454 for(int i = 0; i < n_members; ++i) {
3457 if(is_Array_type(type)) {
3458 ir_entity *entity = get_array_element_entity(type);
3459 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3460 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3461 ir_node *in[1] = { cnst };
3462 irtype = get_array_element_type(type);
3463 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3465 ir_entity *member = get_compound_member(type, i);
3467 irtype = get_entity_type(member);
3468 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3471 create_dynamic_null_initializer(irtype, dbgi, addr);
3476 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3477 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3479 switch(get_initializer_kind(initializer)) {
3480 case IR_INITIALIZER_NULL: {
3481 create_dynamic_null_initializer(type, dbgi, base_addr);
3484 case IR_INITIALIZER_CONST: {
3485 ir_node *node = get_initializer_const_value(initializer);
3486 ir_mode *mode = get_irn_mode(node);
3487 assert(get_type_mode(type) == mode);
3489 /* TODO: bitfields... */
3490 ir_node *mem = get_store();
3491 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3492 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3496 case IR_INITIALIZER_TARVAL: {
3497 tarval *tv = get_initializer_tarval_value(initializer);
3498 ir_mode *mode = get_tarval_mode(tv);
3499 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3500 assert(get_type_mode(type) == mode);
3502 /* TODO: bitfields... */
3503 ir_node *mem = get_store();
3504 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3505 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3509 case IR_INITIALIZER_COMPOUND: {
3510 assert(is_compound_type(type));
3512 if(is_Array_type(type)) {
3513 assert(has_array_upper_bound(type, 0));
3514 n_members = get_array_upper_bound_int(type, 0);
3516 n_members = get_compound_n_members(type);
3519 if(get_initializer_compound_n_entries(initializer)
3520 != (unsigned) n_members)
3521 panic("initializer doesn't match compound type");
3523 for(int i = 0; i < n_members; ++i) {
3526 if(is_Array_type(type)) {
3527 ir_entity *entity = get_array_element_entity(type);
3528 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3529 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3530 ir_node *in[1] = { cnst };
3531 irtype = get_array_element_type(type);
3532 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3534 ir_entity *member = get_compound_member(type, i);
3536 irtype = get_entity_type(member);
3537 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3540 ir_initializer_t *sub_init
3541 = get_initializer_compound_value(initializer, i);
3543 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3549 panic("invalid IR_INITIALIZER found");
3552 static void create_dynamic_initializer(ir_initializer_t *initializer,
3553 dbg_info *dbgi, ir_entity *entity)
3555 ir_node *frame = get_local_frame(entity);
3556 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3557 ir_type *type = get_entity_type(entity);
3559 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3562 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3563 ir_entity *entity, type_t *type)
3565 ir_node *memory = get_store();
3566 ir_node *nomem = new_NoMem();
3567 ir_node *frame = get_irg_frame(current_ir_graph);
3568 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3570 if(initializer->kind == INITIALIZER_VALUE) {
3571 initializer_value_t *initializer_value = &initializer->value;
3573 ir_node *value = expression_to_firm(initializer_value->value);
3574 type = skip_typeref(type);
3575 assign_value(dbgi, addr, type, value);
3579 if(!is_constant_initializer(initializer)) {
3580 ir_initializer_t *irinitializer
3581 = create_ir_initializer(initializer, type);
3583 create_dynamic_initializer(irinitializer, dbgi, entity);
3587 /* create the ir_initializer */
3588 ir_graph *const old_current_ir_graph = current_ir_graph;
3589 current_ir_graph = get_const_code_irg();
3591 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3593 assert(current_ir_graph == get_const_code_irg());
3594 current_ir_graph = old_current_ir_graph;
3596 /* create a "template" entity which is copied to the entity on the stack */
3597 ident *const id = id_unique("initializer.%u");
3598 ir_type *const irtype = get_ir_type(type);
3599 ir_type *const global_type = get_glob_type();
3600 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3601 set_entity_ld_ident(init_entity, id);
3603 set_entity_variability(init_entity, variability_initialized);
3604 set_entity_visibility(init_entity, visibility_local);
3605 set_entity_allocation(init_entity, allocation_static);
3607 set_entity_initializer(init_entity, irinitializer);
3609 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3610 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3612 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3613 set_store(copyb_mem);
3616 static void create_initializer_local_variable_entity(declaration_t *declaration)
3618 initializer_t *initializer = declaration->init.initializer;
3619 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3620 ir_entity *entity = declaration->v.entity;
3621 type_t *type = declaration->type;
3622 create_local_initializer(initializer, dbgi, entity, type);
3625 static void create_declaration_initializer(declaration_t *declaration)
3627 initializer_t *initializer = declaration->init.initializer;
3628 if(initializer == NULL)
3631 declaration_kind_t declaration_kind
3632 = (declaration_kind_t) declaration->declaration_kind;
3633 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3634 create_initializer_local_variable_entity(declaration);
3638 if(initializer->kind == INITIALIZER_VALUE) {
3639 initializer_value_t *initializer_value = &initializer->value;
3641 = get_dbg_info(&declaration->source_position);
3643 ir_node *value = expression_to_firm(initializer_value->value);
3644 value = do_strict_conv(dbgi, value);
3646 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3647 set_value(declaration->v.value_number, value);
3649 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3651 ir_entity *entity = declaration->v.entity;
3653 set_entity_variability(entity, variability_initialized);
3654 set_atomic_ent_value(entity, value);
3657 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3658 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3660 ir_entity *entity = declaration->v.entity;
3661 ir_initializer_t *irinitializer
3662 = create_ir_initializer(initializer, declaration->type);
3664 set_entity_variability(entity, variability_initialized);
3665 set_entity_initializer(entity, irinitializer);
3669 static void create_variable_length_array(declaration_t *declaration)
3671 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3672 type_t *type = declaration->type;
3673 ir_node *mem = get_store();
3674 ir_type *el_type = get_ir_type(type->array.element_type);
3676 /* make sure size_node is calculated */
3677 get_type_size(type);
3678 ir_node *elems = type->array.size_node;
3679 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3681 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3682 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3685 /* initializers are not allowed for VLAs */
3686 assert(declaration->init.initializer == NULL);
3688 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3689 declaration->v.vla_base = addr;
3691 /* TODO: record VLA somewhere so we create the free node when we leave
3696 * Creates a Firm local variable from a declaration.
3698 static void create_local_variable(declaration_t *declaration)
3700 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3702 bool needs_entity = declaration->address_taken;
3703 type_t *type = skip_typeref(declaration->type);
3705 /* is it a variable length array? */
3706 if(is_type_array(type) && !type->array.size_constant) {
3707 create_variable_length_array(declaration);
3709 } else if(is_type_array(type) || is_type_compound(type)) {
3710 needs_entity = true;
3711 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3712 needs_entity = true;
3716 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3717 create_declaration_entity(declaration,
3718 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3721 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3722 declaration->v.value_number = next_value_number_function;
3723 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3724 ++next_value_number_function;
3728 static void create_local_static_variable(declaration_t *declaration)
3730 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3732 type_t *const type = skip_typeref(declaration->type);
3733 ir_type *const global_type = get_glob_type();
3734 ir_type *const irtype = get_ir_type(type);
3735 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3737 size_t l = strlen(declaration->symbol->string);
3738 char buf[l + sizeof(".%u")];
3739 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3740 ident *const id = id_unique(buf);
3742 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3744 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3745 set_entity_volatility(entity, volatility_is_volatile);
3748 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3749 declaration->v.entity = entity;
3750 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3751 set_entity_variability(entity, variability_uninitialized);
3752 set_entity_visibility(entity, visibility_local);
3753 set_entity_allocation(entity, allocation_static);
3755 ir_graph *const old_current_ir_graph = current_ir_graph;
3756 current_ir_graph = get_const_code_irg();
3758 create_declaration_initializer(declaration);
3760 assert(current_ir_graph == get_const_code_irg());
3761 current_ir_graph = old_current_ir_graph;
3766 static void return_statement_to_firm(return_statement_t *statement)
3768 if(get_cur_block() == NULL)
3771 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3772 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3777 if(get_method_n_ress(func_irtype) > 0) {
3778 ir_type *res_type = get_method_res_type(func_irtype, 0);
3780 if(statement->value != NULL) {
3781 ir_node *node = expression_to_firm(statement->value);
3782 node = do_strict_conv(dbgi, node);
3786 if(is_compound_type(res_type)) {
3789 mode = get_type_mode(res_type);
3791 in[0] = new_Unknown(mode);
3795 /* build return_value for its side effects */
3796 if(statement->value != NULL) {
3797 expression_to_firm(statement->value);
3802 ir_node *store = get_store();
3803 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3805 ir_node *end_block = get_irg_end_block(current_ir_graph);
3806 add_immBlock_pred(end_block, ret);
3808 set_cur_block(NULL);
3811 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3813 if(get_cur_block() == NULL)
3816 return expression_to_firm(statement->expression);
3819 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3821 declaration_t *declaration = compound->scope.declarations;
3822 for( ; declaration != NULL; declaration = declaration->next) {
3823 create_local_declaration(declaration);
3826 ir_node *result = NULL;
3827 statement_t *statement = compound->statements;
3828 for( ; statement != NULL; statement = statement->base.next) {
3829 if(statement->base.next == NULL
3830 && statement->kind == STATEMENT_EXPRESSION) {
3831 result = expression_statement_to_firm(
3832 &statement->expression);
3835 statement_to_firm(statement);
3841 static void create_global_variable(declaration_t *declaration)
3845 switch ((storage_class_tag_t)declaration->storage_class) {
3846 case STORAGE_CLASS_STATIC:
3847 vis = visibility_local;
3850 case STORAGE_CLASS_EXTERN:
3851 vis = visibility_external_allocated;
3854 case STORAGE_CLASS_NONE:
3855 vis = visibility_external_visible;
3858 case STORAGE_CLASS_THREAD:
3859 vis = visibility_external_visible;
3862 case STORAGE_CLASS_THREAD_EXTERN:
3863 vis = visibility_external_allocated;
3866 case STORAGE_CLASS_THREAD_STATIC:
3867 vis = visibility_local;
3871 var_type = get_tls_type();
3875 var_type = get_glob_type();
3879 create_declaration_entity(declaration,
3880 DECLARATION_KIND_GLOBAL_VARIABLE,
3882 set_entity_visibility(declaration->v.entity, vis);
3886 case STORAGE_CLASS_TYPEDEF:
3887 case STORAGE_CLASS_AUTO:
3888 case STORAGE_CLASS_REGISTER:
3889 case STORAGE_CLASS_ENUM_ENTRY:
3892 panic("Invalid storage class for global variable");
3895 static void create_local_declaration(declaration_t *declaration)
3897 if (declaration->namespc != NAMESPACE_NORMAL)
3899 /* construct type */
3900 (void) get_ir_type(declaration->type);
3901 if (declaration->symbol == NULL) {
3905 type_t *type = skip_typeref(declaration->type);
3907 switch ((storage_class_tag_t) declaration->storage_class) {
3908 case STORAGE_CLASS_STATIC:
3909 create_local_static_variable(declaration);
3911 case STORAGE_CLASS_EXTERN:
3912 create_global_variable(declaration);
3913 create_declaration_initializer(declaration);
3915 case STORAGE_CLASS_NONE:
3916 case STORAGE_CLASS_AUTO:
3917 case STORAGE_CLASS_REGISTER:
3918 if(is_type_function(type)) {
3919 if(declaration->init.statement != NULL) {
3920 panic("nested functions not supported yet");
3922 get_function_entity(declaration);
3925 create_local_variable(declaration);
3928 case STORAGE_CLASS_ENUM_ENTRY:
3929 /* should already be handled */
3930 assert(declaration->declaration_kind == DECLARATION_KIND_ENUM_ENTRY);
3932 case STORAGE_CLASS_TYPEDEF:
3933 declaration->declaration_kind = DECLARATION_KIND_TYPE;
3935 case STORAGE_CLASS_THREAD:
3936 case STORAGE_CLASS_THREAD_EXTERN:
3937 case STORAGE_CLASS_THREAD_STATIC:
3940 panic("invalid storage class found");
3943 static void initialize_local_declaration(declaration_t *declaration)
3945 if(declaration->symbol == NULL || declaration->namespc != NAMESPACE_NORMAL)
3948 switch ((declaration_kind_t) declaration->declaration_kind) {
3949 case DECLARATION_KIND_LOCAL_VARIABLE:
3950 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY:
3951 create_declaration_initializer(declaration);
3954 case DECLARATION_KIND_LABEL_BLOCK:
3955 case DECLARATION_KIND_COMPOUND_MEMBER:
3956 case DECLARATION_KIND_GLOBAL_VARIABLE:
3957 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
3958 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
3959 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
3960 case DECLARATION_KIND_FUNCTION:
3961 case DECLARATION_KIND_TYPE:
3962 case DECLARATION_KIND_ENUM_ENTRY:
3965 case DECLARATION_KIND_UNKNOWN:
3966 panic("can't initialize unknwon declaration");
3968 panic("invalid declaration kind");
3971 static void declaration_statement_to_firm(declaration_statement_t *statement)
3973 declaration_t *declaration = statement->declarations_begin;
3974 declaration_t *end = statement->declarations_end->next;
3975 for( ; declaration != end; declaration = declaration->next) {
3976 if(declaration->namespc != NAMESPACE_NORMAL)
3978 initialize_local_declaration(declaration);
3982 static void if_statement_to_firm(if_statement_t *statement)
3984 ir_node *cur_block = get_cur_block();
3986 ir_node *fallthrough_block = NULL;
3988 /* the true (blocks) */
3989 ir_node *true_block = NULL;
3990 if (statement->true_statement != NULL) {
3991 true_block = new_immBlock();
3992 statement_to_firm(statement->true_statement);
3993 if (get_cur_block() != NULL) {
3994 ir_node *jmp = new_Jmp();
3995 if (fallthrough_block == NULL)
3996 fallthrough_block = new_immBlock();
3997 add_immBlock_pred(fallthrough_block, jmp);
4001 /* the false (blocks) */
4002 ir_node *false_block = NULL;
4003 if (statement->false_statement != NULL) {
4004 false_block = new_immBlock();
4006 statement_to_firm(statement->false_statement);
4007 if (get_cur_block() != NULL) {
4008 ir_node *jmp = new_Jmp();
4009 if (fallthrough_block == NULL)
4010 fallthrough_block = new_immBlock();
4011 add_immBlock_pred(fallthrough_block, jmp);
4015 /* create the condition */
4016 if (cur_block != NULL) {
4017 if (true_block == NULL || false_block == NULL) {
4018 if (fallthrough_block == NULL)
4019 fallthrough_block = new_immBlock();
4020 if (true_block == NULL)
4021 true_block = fallthrough_block;
4022 if (false_block == NULL)
4023 false_block = fallthrough_block;
4026 set_cur_block(cur_block);
4027 create_condition_evaluation(statement->condition, true_block,
4031 mature_immBlock(true_block);
4032 if (false_block != fallthrough_block) {
4033 mature_immBlock(false_block);
4035 if (fallthrough_block != NULL) {
4036 mature_immBlock(fallthrough_block);
4039 set_cur_block(fallthrough_block);
4042 static void while_statement_to_firm(while_statement_t *statement)
4044 ir_node *jmp = NULL;
4045 if(get_cur_block() != NULL) {
4049 /* create the header block */
4050 ir_node *header_block = new_immBlock();
4052 add_immBlock_pred(header_block, jmp);
4055 /* the false block */
4056 ir_node *false_block = new_immBlock();
4059 ir_node *body_block;
4060 if (statement->body != NULL) {
4061 ir_node *old_continue_label = continue_label;
4062 ir_node *old_break_label = break_label;
4063 continue_label = header_block;
4064 break_label = false_block;
4066 body_block = new_immBlock();
4067 statement_to_firm(statement->body);
4069 assert(continue_label == header_block);
4070 assert(break_label == false_block);
4071 continue_label = old_continue_label;
4072 break_label = old_break_label;
4074 if(get_cur_block() != NULL) {
4076 add_immBlock_pred(header_block, jmp);
4079 body_block = header_block;
4082 /* create the condition */
4083 set_cur_block(header_block);
4085 create_condition_evaluation(statement->condition, body_block, false_block);
4086 mature_immBlock(body_block);
4087 mature_immBlock(false_block);
4088 mature_immBlock(header_block);
4090 set_cur_block(false_block);
4093 static void do_while_statement_to_firm(do_while_statement_t *statement)
4095 ir_node *jmp = NULL;
4096 if(get_cur_block() != NULL) {
4100 /* create the header block */
4101 ir_node *header_block = new_immBlock();
4103 /* the false block */
4104 ir_node *false_block = new_immBlock();
4107 ir_node *body_block = new_immBlock();
4109 add_immBlock_pred(body_block, jmp);
4112 if (statement->body != NULL) {
4113 ir_node *old_continue_label = continue_label;
4114 ir_node *old_break_label = break_label;
4115 continue_label = header_block;
4116 break_label = false_block;
4118 statement_to_firm(statement->body);
4120 assert(continue_label == header_block);
4121 assert(break_label == false_block);
4122 continue_label = old_continue_label;
4123 break_label = old_break_label;
4125 if (get_cur_block() == NULL) {
4126 mature_immBlock(header_block);
4127 mature_immBlock(body_block);
4128 mature_immBlock(false_block);
4133 ir_node *body_jmp = new_Jmp();
4134 add_immBlock_pred(header_block, body_jmp);
4135 mature_immBlock(header_block);
4137 /* create the condition */
4138 set_cur_block(header_block);
4140 create_condition_evaluation(statement->condition, body_block, false_block);
4141 mature_immBlock(body_block);
4142 mature_immBlock(false_block);
4143 mature_immBlock(header_block);
4145 set_cur_block(false_block);
4148 static void for_statement_to_firm(for_statement_t *statement)
4150 ir_node *jmp = NULL;
4152 /* create declarations */
4153 declaration_t *declaration = statement->scope.declarations;
4154 for( ; declaration != NULL; declaration = declaration->next) {
4155 create_local_declaration(declaration);
4157 declaration = statement->scope.declarations;
4158 for( ; declaration != NULL; declaration = declaration->next) {
4159 initialize_local_declaration(declaration);
4162 if (get_cur_block() != NULL) {
4163 if(statement->initialisation != NULL) {
4164 expression_to_firm(statement->initialisation);
4171 /* create the step block */
4172 ir_node *const step_block = new_immBlock();
4173 if (statement->step != NULL) {
4174 expression_to_firm(statement->step);
4176 ir_node *const step_jmp = new_Jmp();
4178 /* create the header block */
4179 ir_node *const header_block = new_immBlock();
4181 add_immBlock_pred(header_block, jmp);
4183 add_immBlock_pred(header_block, step_jmp);
4185 /* the false block */
4186 ir_node *const false_block = new_immBlock();
4189 ir_node * body_block;
4190 if (statement->body != NULL) {
4191 ir_node *const old_continue_label = continue_label;
4192 ir_node *const old_break_label = break_label;
4193 continue_label = step_block;
4194 break_label = false_block;
4196 body_block = new_immBlock();
4197 statement_to_firm(statement->body);
4199 assert(continue_label == step_block);
4200 assert(break_label == false_block);
4201 continue_label = old_continue_label;
4202 break_label = old_break_label;
4204 if (get_cur_block() != NULL) {
4206 add_immBlock_pred(step_block, jmp);
4209 body_block = step_block;
4212 /* create the condition */
4213 set_cur_block(header_block);
4214 if (statement->condition != NULL) {
4215 create_condition_evaluation(statement->condition, body_block,
4218 keep_alive(header_block);
4220 add_immBlock_pred(body_block, jmp);
4223 mature_immBlock(body_block);
4224 mature_immBlock(false_block);
4225 mature_immBlock(step_block);
4226 mature_immBlock(header_block);
4227 mature_immBlock(false_block);
4229 set_cur_block(false_block);
4232 static void create_jump_statement(const statement_t *statement,
4233 ir_node *target_block)
4235 if(get_cur_block() == NULL)
4238 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4239 ir_node *jump = new_d_Jmp(dbgi);
4240 add_immBlock_pred(target_block, jump);
4242 set_cur_block(NULL);
4245 static ir_node *get_break_label(void)
4247 if (break_label == NULL) {
4248 ir_node *cur_block = get_cur_block();
4249 break_label = new_immBlock();
4250 set_cur_block(cur_block);
4255 static void switch_statement_to_firm(const switch_statement_t *statement)
4257 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4259 ir_node *expression = expression_to_firm(statement->expression);
4260 ir_node *cond = new_d_Cond(dbgi, expression);
4262 set_cur_block(NULL);
4264 ir_node *const old_switch_cond = current_switch_cond;
4265 ir_node *const old_break_label = break_label;
4266 const bool old_saw_default_label = saw_default_label;
4267 saw_default_label = false;
4268 current_switch_cond = cond;
4271 if (statement->body != NULL) {
4272 statement_to_firm(statement->body);
4275 if (get_cur_block() != NULL) {
4276 ir_node *jmp = new_Jmp();
4277 add_immBlock_pred(get_break_label(), jmp);
4280 if (!saw_default_label) {
4281 set_cur_block(get_nodes_block(cond));
4282 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4283 MAGIC_DEFAULT_PN_NUMBER);
4284 add_immBlock_pred(get_break_label(), proj);
4287 if (break_label != NULL) {
4288 mature_immBlock(break_label);
4290 set_cur_block(break_label);
4292 assert(current_switch_cond == cond);
4293 current_switch_cond = old_switch_cond;
4294 break_label = old_break_label;
4295 saw_default_label = old_saw_default_label;
4298 static void case_label_to_firm(const case_label_statement_t *statement)
4300 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4302 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4304 /* let's create a node and hope firm constant folding creates a Const
4307 ir_node *old_block = get_nodes_block(current_switch_cond);
4308 ir_node *block = new_immBlock();
4310 set_cur_block(old_block);
4311 if(statement->expression != NULL) {
4312 long start_pn = fold_constant(statement->expression);
4313 long end_pn = start_pn;
4314 if (statement->end_range != NULL) {
4315 end_pn = fold_constant(statement->end_range);
4317 assert(start_pn <= end_pn);
4318 /* create jumps for all cases in the given range */
4319 for (long pn = start_pn; pn <= end_pn; ++pn) {
4320 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4321 /* oops someone detected our cheating... */
4322 panic("magic default pn used");
4324 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4325 add_immBlock_pred(block, proj);
4328 saw_default_label = true;
4329 proj = new_d_defaultProj(dbgi, current_switch_cond,
4330 MAGIC_DEFAULT_PN_NUMBER);
4332 add_immBlock_pred(block, proj);
4335 if (fallthrough != NULL) {
4336 add_immBlock_pred(block, fallthrough);
4338 mature_immBlock(block);
4339 set_cur_block(block);
4341 if(statement->statement != NULL) {
4342 statement_to_firm(statement->statement);
4346 static ir_node *get_label_block(declaration_t *label)
4348 assert(label->namespc == NAMESPACE_LABEL);
4350 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4351 return label->v.block;
4353 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4355 ir_node *old_cur_block = get_cur_block();
4356 ir_node *block = new_immBlock();
4357 set_cur_block(old_cur_block);
4359 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4360 label->v.block = block;
4362 ARR_APP1(ir_node *, imature_blocks, block);
4367 static void label_to_firm(const label_statement_t *statement)
4369 ir_node *block = get_label_block(statement->label);
4371 if(get_cur_block() != NULL) {
4372 ir_node *jmp = new_Jmp();
4373 add_immBlock_pred(block, jmp);
4376 set_cur_block(block);
4379 if(statement->statement != NULL) {
4380 statement_to_firm(statement->statement);
4384 static void goto_to_firm(const goto_statement_t *statement)
4386 if(get_cur_block() == NULL)
4389 ir_node *block = get_label_block(statement->label);
4390 ir_node *jmp = new_Jmp();
4391 add_immBlock_pred(block, jmp);
4393 set_cur_block(NULL);
4396 typedef enum modifier_t {
4397 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4398 ASM_MODIFIER_READ_WRITE = 1 << 1,
4399 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4400 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4403 static void asm_statement_to_firm(const asm_statement_t *statement)
4406 fprintf(stderr, "WARNING asm not implemented yet!\n");
4408 bool needs_memory = false;
4410 size_t n_clobbers = 0;
4411 asm_clobber_t *clobber = statement->clobbers;
4412 for( ; clobber != NULL; clobber = clobber->next) {
4413 if(strcmp(clobber->clobber, "memory") == 0) {
4414 needs_memory = true;
4418 ident *id = new_id_from_str(clobber->clobber);
4419 obstack_ptr_grow(&asm_obst, id);
4422 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4423 ident **clobbers = NULL;
4424 if(n_clobbers > 0) {
4425 clobbers = obstack_finish(&asm_obst);
4428 /* find and count input and output constraints */
4429 asm_constraint_t *constraint = statement->inputs;
4430 for( ; constraint != NULL; constraint = constraint->next) {
4432 bool supports_memop = false;
4433 for(const char *c = constraint->constraints; *c != 0; ++c) {
4434 /* TODO: improve error messages */
4438 panic("multiple alternative assembler constraints not "
4446 supports_memop = true;
4447 obstack_1grow(&asm_obst, *c);
4450 if(modifiers & ASM_MODIFIER_READ_WRITE)
4451 panic("inconsistent register constraints");
4452 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4455 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4456 panic("inconsistent register constraints");
4457 modifiers |= ASM_MODIFIER_READ_WRITE;
4460 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4461 panic("early clobber assembler constraint not supported yet");
4464 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4465 panic("commutative assembler constraint not supported yet");
4468 /* skip register preferences stuff... */
4469 while(*c != 0 && *c != ',')
4473 /* skip register preferences stuff... */
4477 obstack_1grow(&asm_obst, *c);
4481 obstack_1grow(&asm_obst, '\0');
4482 const char *constraint_string = obstack_finish(&asm_obst);
4484 needs_memory |= supports_memop;
4485 if(supports_memop) {
4492 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4493 statement_to_firm(statement->try_statement);
4494 warningf(&statement->base.source_position, "structured exception handling ignored");
4497 static void leave_statement_to_firm(leave_statement_t *statement) {
4498 errorf(&statement->base.source_position, "__leave not supported yet");
4502 * Transform a statement.
4504 static void statement_to_firm(statement_t *statement)
4507 assert(!statement->base.transformed);
4508 statement->base.transformed = true;
4511 switch(statement->kind) {
4512 case STATEMENT_INVALID:
4513 panic("invalid statement found");
4515 case STATEMENT_EMPTY:
4518 case STATEMENT_COMPOUND:
4519 compound_statement_to_firm(&statement->compound);
4521 case STATEMENT_RETURN:
4522 return_statement_to_firm(&statement->returns);
4524 case STATEMENT_EXPRESSION:
4525 expression_statement_to_firm(&statement->expression);
4528 if_statement_to_firm(&statement->ifs);
4530 case STATEMENT_WHILE:
4531 while_statement_to_firm(&statement->whiles);
4533 case STATEMENT_DO_WHILE:
4534 do_while_statement_to_firm(&statement->do_while);
4536 case STATEMENT_DECLARATION:
4537 declaration_statement_to_firm(&statement->declaration);
4539 case STATEMENT_BREAK:
4540 create_jump_statement(statement, get_break_label());
4542 case STATEMENT_CONTINUE:
4543 create_jump_statement(statement, continue_label);
4545 case STATEMENT_SWITCH:
4546 switch_statement_to_firm(&statement->switchs);
4548 case STATEMENT_CASE_LABEL:
4549 case_label_to_firm(&statement->case_label);
4552 for_statement_to_firm(&statement->fors);
4554 case STATEMENT_LABEL:
4555 label_to_firm(&statement->label);
4557 case STATEMENT_GOTO:
4558 goto_to_firm(&statement->gotos);
4561 asm_statement_to_firm(&statement->asms);
4563 case STATEMENT_MS_TRY:
4564 ms_try_statement_to_firm(&statement->ms_try);
4566 case STATEMENT_LEAVE:
4567 leave_statement_to_firm(&statement->leave);
4570 panic("Statement not implemented\n");
4573 static int count_decls_in_expression(const expression_t *expression);
4575 static int count_local_declarations(const declaration_t * decl,
4576 const declaration_t *const end)
4579 for (; decl != end; decl = decl->next) {
4580 if(decl->namespc != NAMESPACE_NORMAL)
4582 const type_t *type = skip_typeref(decl->type);
4583 if (!decl->address_taken && is_type_scalar(type))
4585 const initializer_t *initializer = decl->init.initializer;
4586 /* FIXME: should walk initializer hierarchies... */
4587 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4588 count += count_decls_in_expression(initializer->value.value);
4594 static int count_decls_in_expression(const expression_t *expression) {
4597 if(expression == NULL)
4600 switch((expression_kind_t) expression->base.kind) {
4601 case EXPR_STATEMENT:
4602 return count_decls_in_stmts(expression->statement.statement);
4604 int count_left = count_decls_in_expression(expression->binary.left);
4605 int count_right = count_decls_in_expression(expression->binary.right);
4606 return count_left + count_right;
4609 return count_decls_in_expression(expression->unary.value);
4611 call_argument_t *argument = expression->call.arguments;
4612 for( ; argument != NULL; argument = argument->next) {
4613 count += count_decls_in_expression(argument->expression);
4620 panic("unexpected expression kind");
4622 case EXPR_COMPOUND_LITERAL:
4626 case EXPR_CONDITIONAL:
4627 count += count_decls_in_expression(expression->conditional.condition);
4628 count += count_decls_in_expression(expression->conditional.true_expression);
4629 count += count_decls_in_expression(expression->conditional.false_expression);
4632 case EXPR_BUILTIN_PREFETCH:
4633 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4634 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4635 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4638 case EXPR_BUILTIN_CONSTANT_P:
4639 count += count_decls_in_expression(expression->builtin_constant.value);
4643 count += count_decls_in_expression(expression->select.compound);
4646 case EXPR_ARRAY_ACCESS:
4647 count += count_decls_in_expression(expression->array_access.array_ref);
4648 count += count_decls_in_expression(expression->array_access.index);
4651 case EXPR_CLASSIFY_TYPE:
4652 count += count_decls_in_expression(expression->classify_type.type_expression);
4656 case EXPR_ALIGNOF: {
4657 expression_t *tp_expression = expression->typeprop.tp_expression;
4658 if (tp_expression != NULL) {
4659 count += count_decls_in_expression(tp_expression);
4665 case EXPR_REFERENCE:
4667 case EXPR_CHARACTER_CONSTANT:
4668 case EXPR_WIDE_CHARACTER_CONSTANT:
4669 case EXPR_STRING_LITERAL:
4670 case EXPR_WIDE_STRING_LITERAL:
4672 case EXPR_BUILTIN_SYMBOL:
4678 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4679 * (or implement all the missing expressions here/implement a walker)
4685 static int count_decls_in_stmts(const statement_t *stmt)
4688 for (; stmt != NULL; stmt = stmt->base.next) {
4689 switch (stmt->kind) {
4690 case STATEMENT_EMPTY:
4693 case STATEMENT_DECLARATION: {
4694 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4695 count += count_local_declarations(decl_stmt->declarations_begin,
4696 decl_stmt->declarations_end->next);
4700 case STATEMENT_COMPOUND: {
4701 const compound_statement_t *const comp =
4703 count += count_decls_in_stmts(comp->statements);
4707 case STATEMENT_IF: {
4708 const if_statement_t *const if_stmt = &stmt->ifs;
4709 count += count_decls_in_expression(if_stmt->condition);
4710 count += count_decls_in_stmts(if_stmt->true_statement);
4711 count += count_decls_in_stmts(if_stmt->false_statement);
4715 case STATEMENT_SWITCH: {
4716 const switch_statement_t *const switch_stmt = &stmt->switchs;
4717 count += count_decls_in_expression(switch_stmt->expression);
4718 count += count_decls_in_stmts(switch_stmt->body);
4722 case STATEMENT_LABEL: {
4723 const label_statement_t *const label_stmt = &stmt->label;
4724 if(label_stmt->statement != NULL) {
4725 count += count_decls_in_stmts(label_stmt->statement);
4730 case STATEMENT_WHILE: {
4731 const while_statement_t *const while_stmt = &stmt->whiles;
4732 count += count_decls_in_expression(while_stmt->condition);
4733 count += count_decls_in_stmts(while_stmt->body);
4737 case STATEMENT_DO_WHILE: {
4738 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4739 count += count_decls_in_expression(do_while_stmt->condition);
4740 count += count_decls_in_stmts(do_while_stmt->body);
4744 case STATEMENT_FOR: {
4745 const for_statement_t *const for_stmt = &stmt->fors;
4746 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4747 count += count_decls_in_expression(for_stmt->initialisation);
4748 count += count_decls_in_expression(for_stmt->condition);
4749 count += count_decls_in_expression(for_stmt->step);
4750 count += count_decls_in_stmts(for_stmt->body);
4754 case STATEMENT_CASE_LABEL: {
4755 const case_label_statement_t *label = &stmt->case_label;
4756 count += count_decls_in_expression(label->expression);
4757 if(label->statement != NULL) {
4758 count += count_decls_in_stmts(label->statement);
4764 case STATEMENT_BREAK:
4765 case STATEMENT_CONTINUE:
4768 case STATEMENT_EXPRESSION: {
4769 const expression_statement_t *expr_stmt = &stmt->expression;
4770 count += count_decls_in_expression(expr_stmt->expression);
4774 case STATEMENT_GOTO:
4775 case STATEMENT_LEAVE:
4776 case STATEMENT_INVALID:
4779 case STATEMENT_RETURN: {
4780 const return_statement_t *ret_stmt = &stmt->returns;
4781 count += count_decls_in_expression(ret_stmt->value);
4785 case STATEMENT_MS_TRY: {
4786 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4787 count += count_decls_in_stmts(try_stmt->try_statement);
4788 if(try_stmt->except_expression != NULL)
4789 count += count_decls_in_expression(try_stmt->except_expression);
4790 count += count_decls_in_stmts(try_stmt->final_statement);
4798 static int get_function_n_local_vars(declaration_t *declaration)
4802 /* count parameters */
4803 count += count_local_declarations(declaration->scope.declarations, NULL);
4805 /* count local variables declared in body */
4806 count += count_decls_in_stmts(declaration->init.statement);
4811 static void initialize_function_parameters(declaration_t *declaration)
4813 ir_graph *irg = current_ir_graph;
4814 ir_node *args = get_irg_args(irg);
4815 ir_node *start_block = get_irg_start_block(irg);
4816 ir_type *function_irtype = get_ir_type(declaration->type);
4819 declaration_t *parameter = declaration->scope.declarations;
4820 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4821 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4822 type_t *type = skip_typeref(parameter->type);
4824 bool needs_entity = parameter->address_taken;
4825 assert(!is_type_array(type));
4826 if(is_type_compound(type)) {
4827 needs_entity = true;
4831 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4832 ident *id = new_id_from_str(parameter->symbol->string);
4833 set_entity_ident(entity, id);
4835 parameter->declaration_kind
4836 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4837 parameter->v.entity = entity;
4841 ir_type *param_irtype = get_method_param_type(function_irtype, n);
4842 ir_mode *param_mode = get_type_mode(param_irtype);
4845 ir_node *value = new_r_Proj(irg, start_block, args, param_mode, pn);
4847 ir_mode *mode = get_ir_mode(parameter->type);
4848 value = create_conv(NULL, value, mode);
4849 value = do_strict_conv(NULL, value);
4851 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4852 parameter->v.value_number = next_value_number_function;
4853 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4854 ++next_value_number_function;
4856 set_value(parameter->v.value_number, value);
4861 * Handle additional decl modifiers for IR-graphs
4863 * @param irg the IR-graph
4864 * @param dec_modifiers additional modifiers
4866 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4868 if (decl_modifiers & DM_NORETURN) {
4869 /* TRUE if the declaration includes the Microsoft
4870 __declspec(noreturn) specifier. */
4871 set_irg_additional_property(irg, mtp_property_noreturn);
4873 if (decl_modifiers & DM_NOTHROW) {
4874 /* TRUE if the declaration includes the Microsoft
4875 __declspec(nothrow) specifier. */
4876 set_irg_additional_property(irg, mtp_property_nothrow);
4878 if (decl_modifiers & DM_NAKED) {
4879 /* TRUE if the declaration includes the Microsoft
4880 __declspec(naked) specifier. */
4881 set_irg_additional_property(irg, mtp_property_naked);
4883 if (decl_modifiers & DM_FORCEINLINE) {
4884 /* TRUE if the declaration includes the
4885 Microsoft __forceinline specifier. */
4886 set_irg_inline_property(irg, irg_inline_forced);
4888 if (decl_modifiers & DM_NOINLINE) {
4889 /* TRUE if the declaration includes the Microsoft
4890 __declspec(noinline) specifier. */
4891 set_irg_inline_property(irg, irg_inline_forbidden);
4896 * Create code for a function.
4898 static void create_function(declaration_t *declaration)
4900 ir_entity *function_entity = get_function_entity(declaration);
4902 if(declaration->init.statement == NULL)
4905 current_function_decl = declaration;
4906 current_function_name = NULL;
4907 current_funcsig = NULL;
4909 assert(imature_blocks == NULL);
4910 imature_blocks = NEW_ARR_F(ir_node*, 0);
4912 int n_local_vars = get_function_n_local_vars(declaration);
4913 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4915 set_irg_fp_model(irg, firm_opt.fp_model);
4916 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4917 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4919 ir_node *first_block = get_cur_block();
4921 /* set inline flags */
4922 if (declaration->is_inline)
4923 set_irg_inline_property(irg, irg_inline_recomended);
4924 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4926 next_value_number_function = 0;
4927 initialize_function_parameters(declaration);
4929 statement_to_firm(declaration->init.statement);
4931 ir_node *end_block = get_irg_end_block(irg);
4933 /* do we have a return statement yet? */
4934 if(get_cur_block() != NULL) {
4935 type_t *type = skip_typeref(declaration->type);
4936 assert(is_type_function(type));
4937 const function_type_t *func_type = &type->function;
4938 const type_t *return_type
4939 = skip_typeref(func_type->return_type);
4942 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4943 ret = new_Return(get_store(), 0, NULL);
4946 if(is_type_scalar(return_type)) {
4947 mode = get_ir_mode(func_type->return_type);
4953 /* ยง5.1.2.2.3 main implicitly returns 0 */
4954 if (strcmp(declaration->symbol->string, "main") == 0) {
4955 in[0] = new_Const(mode, get_mode_null(mode));
4957 in[0] = new_Unknown(mode);
4958 if(warning.return_type) {
4959 warningf(&declaration->source_position,
4960 "missing return statement at end of non-void function '%Y'",
4961 declaration->symbol);
4964 ret = new_Return(get_store(), 1, in);
4966 add_immBlock_pred(end_block, ret);
4969 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4970 mature_immBlock(imature_blocks[i]);
4972 DEL_ARR_F(imature_blocks);
4973 imature_blocks = NULL;
4975 mature_immBlock(first_block);
4976 mature_immBlock(end_block);
4978 irg_finalize_cons(irg);
4980 /* finalize the frame type */
4981 ir_type *frame_type = get_irg_frame_type(irg);
4982 int n = get_compound_n_members(frame_type);
4985 for(int i = 0; i < n; ++i) {
4986 ir_entity *entity = get_compound_member(frame_type, i);
4987 ir_type *entity_type = get_entity_type(entity);
4989 int align = get_type_alignment_bytes(entity_type);
4990 if(align > align_all)
4994 misalign = offset % align;
4996 offset += align - misalign;
5000 set_entity_offset(entity, offset);
5001 offset += get_type_size_bytes(entity_type);
5003 set_type_size_bytes(frame_type, offset);
5004 set_type_alignment_bytes(frame_type, align_all);
5009 static void scope_to_firm(scope_t *scope)
5011 /* first pass: create declarations */
5012 declaration_t *declaration = scope->declarations;
5013 for( ; declaration != NULL; declaration = declaration->next) {
5014 if(declaration->namespc != NAMESPACE_NORMAL)
5016 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5017 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5019 if(declaration->symbol == NULL)
5022 type_t *type = skip_typeref(declaration->type);
5023 if(is_type_function(type)) {
5024 get_function_entity(declaration);
5026 create_global_variable(declaration);
5030 /* second pass: create code/initializers */
5031 declaration = scope->declarations;
5032 for( ; declaration != NULL; declaration = declaration->next) {
5033 if(declaration->namespc != NAMESPACE_NORMAL)
5035 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
5036 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
5038 if(declaration->symbol == NULL)
5041 type_t *type = declaration->type;
5042 if(type->kind == TYPE_FUNCTION) {
5043 create_function(declaration);
5045 assert(declaration->declaration_kind
5046 == DECLARATION_KIND_GLOBAL_VARIABLE);
5047 current_ir_graph = get_const_code_irg();
5048 create_declaration_initializer(declaration);
5053 void init_ast2firm(void)
5055 obstack_init(&asm_obst);
5056 init_atomic_modes();
5058 id_underscore = new_id_from_chars("_", 1);
5059 id_imp = new_id_from_chars("__imp_", 6);
5061 /* OS option must be set to the backend */
5062 const char *s = "ia32-gasmode=linux";
5063 switch (firm_opt.os_support) {
5064 case OS_SUPPORT_MINGW:
5065 create_ld_ident = create_ld_ident_win32;
5066 s = "ia32-gasmode=mingw";
5068 case OS_SUPPORT_LINUX:
5069 create_ld_ident = create_ld_ident_linux_elf;
5070 s = "ia32-gasmode=linux"; break;
5072 case OS_SUPPORT_MACHO:
5073 create_ld_ident = create_ld_ident_macho;
5074 s = "ia32-gasmode=macho"; break;
5079 /* create idents for all known runtime functions */
5080 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
5081 rts_idents[i] = new_id_from_str(rts_data[i].name);
5085 static void init_ir_types(void)
5087 static int ir_types_initialized = 0;
5088 if(ir_types_initialized)
5090 ir_types_initialized = 1;
5092 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
5093 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
5094 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
5096 ir_type_int = get_ir_type(type_int);
5097 ir_type_const_char = get_ir_type(type_const_char);
5098 ir_type_wchar_t = get_ir_type(type_wchar_t);
5099 ir_type_void = get_ir_type(type_void);
5102 void exit_ast2firm(void)
5104 obstack_free(&asm_obst, NULL);
5107 void translation_unit_to_firm(translation_unit_t *unit)
5109 /* just to be sure */
5110 continue_label = NULL;
5112 current_switch_cond = NULL;
5116 scope_to_firm(&unit->scope);