2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm.h>
27 #include <libfirm/adt/obst.h>
31 #include "adt/error.h"
32 #include "adt/array.h"
38 #include "diagnostic.h"
39 #include "lang_features.h"
41 #include "driver/firm_opt.h"
42 #include "driver/firm_cmdline.h"
44 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
46 /* some idents needed for name mangling */
47 static ident *id_underscore;
50 static ir_type *ir_type_const_char;
51 static ir_type *ir_type_wchar_t;
52 static ir_type *ir_type_void;
53 static ir_type *ir_type_int;
55 static type_t *type_const_char;
57 static int next_value_number_function;
58 static ir_node *continue_label;
59 static ir_node *break_label;
60 static ir_node *current_switch_cond;
61 static bool saw_default_label;
62 static ir_node **imature_blocks;
64 static const declaration_t *current_function_decl;
65 static ir_node *current_function_name;
66 static ir_node *current_funcsig;
68 static struct obstack asm_obst;
70 typedef enum declaration_kind_t {
71 DECLARATION_KIND_UNKNOWN,
72 DECLARATION_KIND_FUNCTION,
73 DECLARATION_KIND_VARIABLE_LENGTH_ARRAY,
74 DECLARATION_KIND_GLOBAL_VARIABLE,
75 DECLARATION_KIND_LOCAL_VARIABLE,
76 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
77 DECLARATION_KIND_COMPOUND_MEMBER,
78 DECLARATION_KIND_LABEL_BLOCK,
79 DECLARATION_KIND_ENUM_ENTRY,
80 DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE,
81 DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
84 static ir_type *get_ir_type(type_t *type);
85 static ir_type *get_ir_type_incomplete(type_t *type);
86 static int count_decls_in_stmts(const statement_t *stmt);
88 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
90 const declaration_t *declaration = get_irg_loc_description(irg, pos);
92 warningf(&declaration->source_position,
93 "variable '%#T' might be used uninitialized",
94 declaration->type, declaration->symbol);
95 return new_r_Unknown(irg, mode);
98 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
100 const source_position_t *pos = (const source_position_t*) dbg;
103 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
107 const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
109 const source_position_t *pos = (const source_position_t*) dbg;
114 return pos->input_name;
117 static dbg_info *get_dbg_info(const source_position_t *pos)
119 return (dbg_info*) pos;
122 static ir_mode *_atomic_modes[ATOMIC_TYPE_LAST+1];
124 static ir_mode *mode_int, *mode_uint;
126 static ir_node *expression_to_firm(const expression_t *expression);
127 static inline ir_mode *get_ir_mode(type_t *type);
129 static ir_mode *init_atomic_ir_mode(atomic_type_kind_t kind)
131 unsigned flags = get_atomic_type_flags(kind);
132 unsigned size = get_atomic_type_size(kind);
133 if( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
134 && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
137 unsigned bit_size = size * 8;
138 bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
139 mode_arithmetic arithmetic;
140 unsigned modulo_shift;
142 if(flags & ATOMIC_TYPE_FLAG_INTEGER) {
143 assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
144 snprintf(name, sizeof(name), "i%s%d", is_signed?"":"u", bit_size);
145 sort = irms_int_number;
146 arithmetic = irma_twos_complement;
147 modulo_shift = bit_size < machine_size ? machine_size : bit_size;
149 assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
150 snprintf(name, sizeof(name), "f%d", bit_size);
151 sort = irms_float_number;
152 arithmetic = irma_ieee754;
155 return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
163 * Initialises the atomic modes depending on the machine size.
165 static void init_atomic_modes(void)
167 for(int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
168 _atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
170 mode_int = _atomic_modes[ATOMIC_TYPE_INT];
171 mode_uint = _atomic_modes[ATOMIC_TYPE_UINT];
173 /* there's no real void type in firm */
174 _atomic_modes[ATOMIC_TYPE_VOID] = mode_int;
176 /* initialize pointer modes */
178 mode_sort sort = irms_reference;
179 unsigned bit_size = machine_size;
181 mode_arithmetic arithmetic = irma_twos_complement;
182 unsigned modulo_shift
183 = bit_size < machine_size ? machine_size : bit_size;
185 snprintf(name, sizeof(name), "p%d", machine_size);
186 ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
189 set_reference_mode_signed_eq(ptr_mode, _atomic_modes[get_intptr_kind()]);
190 set_reference_mode_unsigned_eq(ptr_mode, _atomic_modes[get_uintptr_kind()]);
192 /* Hmm, pointers should be machine size */
193 set_modeP_data(ptr_mode);
194 set_modeP_code(ptr_mode);
197 static unsigned get_compound_type_size(compound_type_t *type)
199 ir_type *irtype = get_ir_type((type_t*) type);
200 return get_type_size_bytes(irtype);
203 static unsigned get_array_type_size(array_type_t *type)
205 assert(!type->is_vla);
206 ir_type *irtype = get_ir_type((type_t*) type);
207 return get_type_size_bytes(irtype);
211 static unsigned get_type_size_const(type_t *type)
213 type = skip_typeref(type);
217 panic("error type occured");
219 return get_atomic_type_size(type->atomic.akind);
221 return 2 * get_atomic_type_size(type->complex.akind);
223 return get_atomic_type_size(type->imaginary.akind);
225 return get_mode_size_bytes(mode_int);
226 case TYPE_COMPOUND_UNION:
227 case TYPE_COMPOUND_STRUCT:
228 return get_compound_type_size(&type->compound);
230 /* just a pointer to the function */
231 return get_mode_size_bytes(mode_P_code);
233 return get_mode_size_bytes(mode_P_data);
235 return get_array_type_size(&type->array);
237 return get_type_size_const(type->builtin.real_type);
239 panic("type size of bitfield request");
245 panic("Trying to determine size of invalid type");
248 static ir_node *get_type_size(type_t *type)
250 type = skip_typeref(type);
252 if(is_type_array(type) && type->array.is_vla) {
253 ir_node *size_node = type->array.size_node;
254 if(size_node == NULL) {
255 size_node = expression_to_firm(type->array.size_expression);
256 assert(!is_Const(size_node));
257 type->array.size_node = size_node;
260 ir_node *elem_size = get_type_size(type->array.element_type);
261 ir_mode *mode = get_irn_mode(size_node);
262 ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
266 ir_mode *mode = get_ir_mode(type_size_t);
268 sym.type_p = get_ir_type(type);
269 return new_SymConst(mode, sym, symconst_type_size);
272 static unsigned count_parameters(const function_type_t *function_type)
276 function_parameter_t *parameter = function_type->parameters;
277 for ( ; parameter != NULL; parameter = parameter->next) {
285 * Creates a Firm type for an atomic type
287 static ir_type *create_atomic_type(const atomic_type_t *type)
289 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
290 atomic_type_kind_t kind = type->akind;
291 ir_mode *mode = _atomic_modes[kind];
292 ident *id = get_mode_ident(mode);
293 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
295 set_type_alignment_bytes(irtype, type->base.alignment);
301 * Creates a Firm type for a complex type
303 static ir_type *create_complex_type(const complex_type_t *type)
305 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
306 atomic_type_kind_t kind = type->akind;
307 ir_mode *mode = _atomic_modes[kind];
308 ident *id = get_mode_ident(mode);
313 /* FIXME: finish the array */
318 * Creates a Firm type for an imaginary type
320 static ir_type *create_imaginary_type(const imaginary_type_t *type)
322 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
323 atomic_type_kind_t kind = type->akind;
324 ir_mode *mode = _atomic_modes[kind];
325 ident *id = get_mode_ident(mode);
326 ir_type *irtype = new_d_type_primitive(id, mode, dbgi);
328 set_type_alignment_bytes(irtype, type->base.alignment);
333 static ir_type *create_method_type(const function_type_t *function_type)
335 type_t *return_type = function_type->return_type;
337 ident *id = id_unique("functiontype.%u");
338 int n_parameters = count_parameters(function_type);
339 int n_results = return_type == type_void ? 0 : 1;
340 dbg_info *dbgi = get_dbg_info(&function_type->base.source_position);
341 ir_type *irtype = new_d_type_method(id, n_parameters, n_results, dbgi);
343 if(return_type != type_void) {
344 ir_type *restype = get_ir_type(return_type);
345 set_method_res_type(irtype, 0, restype);
348 function_parameter_t *parameter = function_type->parameters;
350 for( ; parameter != NULL; parameter = parameter->next) {
351 ir_type *p_irtype = get_ir_type(parameter->type);
352 set_method_param_type(irtype, n, p_irtype);
356 if(function_type->variadic || function_type->unspecified_parameters) {
357 set_method_variadicity(irtype, variadicity_variadic);
363 static ir_type *create_pointer_type(pointer_type_t *type)
365 type_t *points_to = type->points_to;
366 ir_type *ir_points_to = get_ir_type_incomplete(points_to);
367 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
368 ir_type *ir_type = new_d_type_pointer(id_unique("pointer.%u"),
369 ir_points_to, mode_P_data, dbgi);
374 static ir_type *create_array_type(array_type_t *type)
376 type_t *element_type = type->element_type;
377 ir_type *ir_element_type = get_ir_type(element_type);
379 ident *id = id_unique("array.%u");
380 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
381 ir_type *ir_type = new_d_type_array(id, 1, ir_element_type, dbgi);
383 const int align = get_type_alignment_bytes(ir_element_type);
384 set_type_alignment_bytes(ir_type, align);
386 if(type->size_constant) {
387 int n_elements = type->size;
389 set_array_bounds_int(ir_type, 0, 0, n_elements);
391 size_t elemsize = get_type_size_bytes(ir_element_type);
392 if(elemsize % align > 0) {
393 elemsize += align - (elemsize % align);
395 set_type_size_bytes(ir_type, n_elements * elemsize);
397 set_array_lower_bound_int(ir_type, 0, 0);
399 set_type_state(ir_type, layout_fixed);
405 * Return the signed integer type of size bits.
407 * @param size the size
409 static ir_type *get_signed_int_type_for_bit_size(ir_type *base_tp,
412 static ir_mode *s_modes[64 + 1] = {NULL, };
416 if (size <= 0 || size > 64)
419 mode = s_modes[size];
423 snprintf(name, sizeof(name), "bf_I%u", size);
424 mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
425 size <= 32 ? 32 : size );
426 s_modes[size] = mode;
430 snprintf(name, sizeof(name), "I%u", size);
431 ident *id = new_id_from_str(name);
432 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
433 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
434 set_primitive_base_type(res, base_tp);
440 * Return the unsigned integer type of size bits.
442 * @param size the size
444 static ir_type *get_unsigned_int_type_for_bit_size(ir_type *base_tp,
447 static ir_mode *u_modes[64 + 1] = {NULL, };
451 if (size <= 0 || size > 64)
454 mode = u_modes[size];
458 snprintf(name, sizeof(name), "bf_U%u", size);
459 mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
460 size <= 32 ? 32 : size );
461 u_modes[size] = mode;
466 snprintf(name, sizeof(name), "U%u", size);
467 ident *id = new_id_from_str(name);
468 dbg_info *dbgi = get_dbg_info(&builtin_source_position);
469 res = new_d_type_primitive(mangle_u(get_type_ident(base_tp), id), mode, dbgi);
470 set_primitive_base_type(res, base_tp);
475 static ir_type *create_bitfield_type(bitfield_type_t *const type)
477 type_t *base = skip_typeref(type->base_type);
478 assert(base->kind == TYPE_ATOMIC);
479 ir_type *irbase = get_ir_type(base);
481 unsigned size = fold_constant(type->size);
483 assert(!is_type_float(base));
484 if(is_type_signed(base)) {
485 return get_signed_int_type_for_bit_size(irbase, size);
487 return get_unsigned_int_type_for_bit_size(irbase, size);
491 #define INVALID_TYPE ((ir_type_ptr)-1)
494 COMPOUND_IS_STRUCT = false,
495 COMPOUND_IS_UNION = true
499 * Construct firm type from ast struct tyep.
501 * As anonymous inner structs get flattened to a single firm type, we might get
502 * irtype, outer_offset and out_align passed (they represent the position of
503 * the anonymous inner struct inside the resulting firm struct)
505 static ir_type *create_compound_type(compound_type_t *type, ir_type *irtype,
506 size_t *outer_offset, size_t *outer_align,
507 bool incomplete, bool is_union)
509 declaration_t *declaration = type->declaration;
510 declaration_kind_t kind = declaration->declaration_kind;
512 if(kind == DECLARATION_KIND_COMPOUND_TYPE_COMPLETE
513 || (kind == DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE
515 return declaration->v.irtype;
517 size_t align_all = 1;
519 size_t bit_offset = 0;
523 symbol_t *symbol = declaration->symbol;
526 id = new_id_from_str(symbol->string);
529 id = id_unique("__anonymous_union.%u");
531 id = id_unique("__anonymous_struct.%u");
534 dbg_info *dbgi = get_dbg_info(&type->base.source_position);
537 irtype = new_d_type_union(id, dbgi);
539 irtype = new_d_type_struct(id, dbgi);
542 declaration->declaration_kind
543 = DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE;
544 declaration->v.irtype = irtype;
545 //type->base.firm_type = irtype;
547 offset = *outer_offset;
548 align_all = *outer_align;
554 declaration->declaration_kind = DECLARATION_KIND_COMPOUND_TYPE_COMPLETE;
556 declaration_t *entry = declaration->scope.declarations;
557 for( ; entry != NULL; entry = entry->next) {
558 if(entry->namespc != NAMESPACE_NORMAL)
561 size_t prev_offset = offset;
563 symbol_t *symbol = entry->symbol;
564 type_t *entry_type = skip_typeref(entry->type);
565 dbg_info *dbgi = get_dbg_info(&entry->source_position);
569 ident = new_id_from_str(symbol->string);
571 if(entry_type->kind == TYPE_COMPOUND_STRUCT) {
572 create_compound_type(&entry_type->compound, irtype, &offset,
573 &align_all, false, COMPOUND_IS_STRUCT);
574 goto finished_member;
575 } else if(entry_type->kind == TYPE_COMPOUND_UNION) {
576 create_compound_type(&entry_type->compound, irtype, &offset,
577 &align_all, false, COMPOUND_IS_UNION);
578 goto finished_member;
580 assert(entry_type->kind == TYPE_BITFIELD);
582 ident = id_unique("anon.%u");
585 ir_type *base_irtype;
586 if(entry_type->kind == TYPE_BITFIELD) {
587 base_irtype = get_ir_type(entry_type->bitfield.base_type);
589 base_irtype = get_ir_type(entry_type);
592 size_t entry_alignment = get_type_alignment_bytes(base_irtype);
593 size_t misalign = offset % entry_alignment;
595 ir_type *entry_irtype = get_ir_type(entry_type);
596 ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
599 size_t bits_remainder;
600 if(entry_type->kind == TYPE_BITFIELD) {
601 size_t size_bits = fold_constant(entry_type->bitfield.size);
602 size_t rest_size_bits = (entry_alignment - misalign)*8 - bit_offset;
604 if(size_bits > rest_size_bits) {
605 /* start a new bucket */
606 offset += entry_alignment - misalign;
612 /* put into current bucket */
613 base = offset - misalign;
614 bits_remainder = misalign * 8 + bit_offset;
617 offset += size_bits / 8;
618 bit_offset = bit_offset + (size_bits % 8);
620 size_t entry_size = get_type_size_bytes(base_irtype);
621 if(misalign > 0 || bit_offset > 0)
622 offset += entry_alignment - misalign;
626 offset += entry_size;
630 if(entry_alignment > align_all) {
631 if(entry_alignment % align_all != 0) {
632 panic("uneven alignments not supported yet");
634 align_all = entry_alignment;
637 set_entity_offset(entity, base);
638 set_entity_offset_bits_remainder(entity,
639 (unsigned char) bits_remainder);
640 //add_struct_member(irtype, entity);
641 entry->declaration_kind = DECLARATION_KIND_COMPOUND_MEMBER;
642 assert(entry->v.entity == NULL);
643 entry->v.entity = entity;
647 size_t entry_size = offset - prev_offset;
648 if (entry_size > size) {
660 size_t misalign = offset % align_all;
661 if(misalign > 0 || bit_offset > 0) {
662 size += align_all - misalign;
665 if(outer_offset != NULL) {
667 *outer_offset = offset;
669 *outer_offset += size;
672 if (align_all > *outer_align) {
673 if(align_all % *outer_align != 0) {
674 panic("uneven alignments not supported yet");
676 *outer_align = align_all;
679 set_type_alignment_bytes(irtype, align_all);
680 set_type_size_bytes(irtype, size);
681 set_type_state(irtype, layout_fixed);
687 static ir_type *create_enum_type(enum_type_t *const type)
689 type->base.firm_type = ir_type_int;
691 ir_mode *const mode = mode_int;
692 tarval *const one = get_mode_one(mode);
693 tarval * tv_next = get_tarval_null(mode);
695 declaration_t *declaration = type->declaration->next;
696 for (; declaration != NULL; declaration = declaration->next) {
697 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
700 declaration->declaration_kind = DECLARATION_KIND_ENUM_ENTRY;
702 expression_t *const init = declaration->init.enum_value;
704 ir_node *const cnst = expression_to_firm(init);
705 if (!is_Const(cnst)) {
706 panic("couldn't fold constant");
708 tv_next = get_Const_tarval(cnst);
710 declaration->v.enum_val = tv_next;
711 tv_next = tarval_add(tv_next, one);
717 static ir_type *get_ir_type_incomplete(type_t *type)
719 assert(type != NULL);
720 type = skip_typeref(type);
722 if (type->base.firm_type != NULL) {
723 assert(type->base.firm_type != INVALID_TYPE);
724 return type->base.firm_type;
727 switch (type->kind) {
728 case TYPE_COMPOUND_STRUCT:
729 return create_compound_type(&type->compound, NULL, NULL, NULL,
730 true, COMPOUND_IS_STRUCT);
732 case TYPE_COMPOUND_UNION:
733 return create_compound_type(&type->compound, NULL, NULL, NULL,
734 true, COMPOUND_IS_UNION);
736 return get_ir_type(type);
740 static ir_type *get_ir_type(type_t *type)
742 assert(type != NULL);
744 type = skip_typeref(type);
746 if (type->base.firm_type != NULL) {
747 assert(type->base.firm_type != INVALID_TYPE);
748 return type->base.firm_type;
751 ir_type *firm_type = NULL;
752 switch (type->kind) {
754 panic("error type occurred");
756 firm_type = create_atomic_type(&type->atomic);
759 firm_type = create_complex_type(&type->complex);
762 firm_type = create_imaginary_type(&type->imaginary);
765 firm_type = create_method_type(&type->function);
768 firm_type = create_pointer_type(&type->pointer);
771 firm_type = create_array_type(&type->array);
773 case TYPE_COMPOUND_STRUCT:
774 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
775 false, COMPOUND_IS_STRUCT);
777 case TYPE_COMPOUND_UNION:
778 firm_type = create_compound_type(&type->compound, NULL, NULL, NULL,
779 false, COMPOUND_IS_UNION);
782 firm_type = create_enum_type(&type->enumt);
785 firm_type = get_ir_type(type->builtin.real_type);
788 firm_type = create_bitfield_type(&type->bitfield);
796 if(firm_type == NULL)
797 panic("unknown type found");
799 type->base.firm_type = firm_type;
803 static inline ir_mode *get_ir_mode(type_t *type)
805 ir_type *irtype = get_ir_type(type);
807 /* firm doesn't report a mode for arrays somehow... */
808 if(is_Array_type(irtype)) {
812 ir_mode *mode = get_type_mode(irtype);
813 assert(mode != NULL);
817 static ident *predef_idents[rts_max];
819 /** Names of the runtime functions. */
820 static const struct {
821 int id; /**< the rts id */
822 int n_res; /**< number of return values */
823 const char *name; /**< the name of the rts function */
824 int n_params; /**< number of parameters */
825 unsigned flags; /**< language flags */
827 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
828 { rts_abort, 0, "abort", 0, _C89 },
829 { rts_abs, 1, "abs", 1, _C89 },
830 { rts_labs, 1, "labs", 1, _C89 },
831 { rts_llabs, 1, "llabs", 1, _C99 },
832 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
834 { rts_fabs, 1, "fabs", 1, _C89 },
835 { rts_sqrt, 1, "sqrt", 1, _C89 },
836 { rts_cbrt, 1, "cbrt", 1, _C99 },
837 { rts_exp, 1, "exp", 1, _C89 },
838 { rts_exp2, 1, "exp2", 1, _C89 },
839 { rts_exp10, 1, "exp10", 1, _GNUC },
840 { rts_log, 1, "log", 1, _C89 },
841 { rts_log2, 1, "log2", 1, _C89 },
842 { rts_log10, 1, "log10", 1, _C89 },
843 { rts_pow, 1, "pow", 2, _C89 },
844 { rts_sin, 1, "sin", 1, _C89 },
845 { rts_cos, 1, "cos", 1, _C89 },
846 { rts_tan, 1, "tan", 1, _C89 },
847 { rts_asin, 1, "asin", 1, _C89 },
848 { rts_acos, 1, "acos", 1, _C89 },
849 { rts_atan, 1, "atan", 1, _C89 },
850 { rts_sinh, 1, "sinh", 1, _C89 },
851 { rts_cosh, 1, "cosh", 1, _C89 },
852 { rts_tanh, 1, "tanh", 1, _C89 },
854 { rts_fabsf, 1, "fabsf", 1, _C99 },
855 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
856 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
857 { rts_expf, 1, "expf", 1, _C99 },
858 { rts_exp2f, 1, "exp2f", 1, _C99 },
859 { rts_exp10f, 1, "exp10f", 1, _GNUC },
860 { rts_logf, 1, "logf", 1, _C99 },
861 { rts_log2f, 1, "log2f", 1, _C99 },
862 { rts_log10f, 1, "log10f", 1, _C99 },
863 { rts_powf, 1, "powf", 2, _C99 },
864 { rts_sinf, 1, "sinf", 1, _C99 },
865 { rts_cosf, 1, "cosf", 1, _C99 },
866 { rts_tanf, 1, "tanf", 1, _C99 },
867 { rts_asinf, 1, "asinf", 1, _C99 },
868 { rts_acosf, 1, "acosf", 1, _C99 },
869 { rts_atanf, 1, "atanf", 1, _C99 },
870 { rts_sinhf, 1, "sinhf", 1, _C99 },
871 { rts_coshf, 1, "coshf", 1, _C99 },
872 { rts_tanhf, 1, "tanhf", 1, _C99 },
874 { rts_fabsl, 1, "fabsl", 1, _C99 },
875 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
876 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
877 { rts_expl, 1, "expl", 1, _C99 },
878 { rts_exp2l, 1, "exp2l", 1, _C99 },
879 { rts_exp10l, 1, "exp10l", 1, _GNUC },
880 { rts_logl, 1, "logl", 1, _C99 },
881 { rts_log2l, 1, "log2l", 1, _C99 },
882 { rts_log10l, 1, "log10l", 1, _C99 },
883 { rts_powl, 1, "powl", 2, _C99 },
884 { rts_sinl, 1, "sinl", 1, _C99 },
885 { rts_cosl, 1, "cosl", 1, _C99 },
886 { rts_tanl, 1, "tanl", 1, _C99 },
887 { rts_asinl, 1, "asinl", 1, _C99 },
888 { rts_acosl, 1, "acosl", 1, _C99 },
889 { rts_atanl, 1, "atanl", 1, _C99 },
890 { rts_sinhl, 1, "sinhl", 1, _C99 },
891 { rts_coshl, 1, "coshl", 1, _C99 },
892 { rts_tanhl, 1, "tanhl", 1, _C99 },
894 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
895 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
896 { rts_strcmp, 1, "strcmp", 2, _C89 },
897 { rts_strncmp, 1, "strncmp", 3, _C89 }
901 * Mangles an entity linker (ld) name for win32 usage.
903 * @param ent the entity to be mangled
904 * @param declaration the declaration
906 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
910 if (is_Method_type(get_entity_type(ent)))
911 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
913 /* always add an underscore in win32 */
914 id = mangle(id_underscore, get_entity_ident(ent));
917 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
918 if (decl_modifiers & DM_DLLIMPORT) {
919 /* add prefix for imported symbols */
920 id = mangle(id_imp, id);
926 * Mangles an entity linker (ld) name for Linux ELF usage.
928 * @param ent the entity to be mangled
929 * @param declaration the declaration
931 static ident *create_ld_ident_linux_elf(ir_entity *entity,
932 declaration_t *declaration)
935 return get_entity_ident(entity);
939 * Mangles an entity linker (ld) name for Mach-O usage.
941 * @param ent the entity to be mangled
942 * @param declaration the declaration
944 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
947 ident *id = mangle(id_underscore, get_entity_ident(ent));
951 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
952 declaration_t *declaration);
953 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
955 static ir_entity* get_function_entity(declaration_t *declaration)
957 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
958 return declaration->v.entity;
959 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
961 symbol_t *symbol = declaration->symbol;
962 ident *id = new_id_from_str(symbol->string);
964 ir_type *global_type = get_glob_type();
965 ir_type *ir_type_method = get_ir_type(declaration->type);
966 assert(is_Method_type(ir_type_method));
968 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
969 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
970 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
971 if(declaration->storage_class == STORAGE_CLASS_STATIC &&
972 declaration->init.statement == NULL) {
973 /* this entity was declared, but never defined */
974 set_entity_peculiarity(entity, peculiarity_description);
976 if(declaration->storage_class == STORAGE_CLASS_STATIC
977 || declaration->is_inline) {
978 set_entity_visibility(entity, visibility_local);
979 } else if(declaration->init.statement != NULL) {
980 set_entity_visibility(entity, visibility_external_visible);
982 set_entity_visibility(entity, visibility_external_allocated);
984 /* We should check for file scope here, but as long as we compile C only
985 this is not needed. */
986 int n_params = get_method_n_params(ir_type_method);
987 int n_res = get_method_n_ress(ir_type_method);
990 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
991 /* found abort(), store for later */
995 if (! firm_opt.freestanding) {
996 /* check for a known runtime function */
997 for (i = 0; i < rts_max; ++i) {
998 /* ignore those rts functions not necessary needed for current mode */
999 if ((c_mode & rts_data[i].flags) == 0)
1001 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
1002 id == predef_idents[rts_data[i].id])
1003 rts_entities[rts_data[i].id] = entity;
1008 set_entity_allocation(entity, allocation_static);
1010 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1011 declaration->v.entity = entity;
1016 static ir_node *const_to_firm(const const_expression_t *cnst)
1018 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1019 ir_mode *mode = get_ir_mode(cnst->base.type);
1024 if(mode_is_float(mode)) {
1025 tv = new_tarval_from_double(cnst->v.float_value, mode);
1027 if(mode_is_signed(mode)) {
1028 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1030 len = snprintf(buf, sizeof(buf), "%llu",
1031 (unsigned long long) cnst->v.int_value);
1033 tv = new_tarval_from_str(buf, len, mode);
1036 return new_d_Const(dbgi, mode, tv);
1039 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1041 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1042 ir_mode *mode = get_ir_mode(cnst->base.type);
1044 long long int v = 0;
1045 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1046 if (char_is_signed) {
1047 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1049 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1053 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1054 tarval *tv = new_tarval_from_str(buf, len, mode);
1056 return new_d_Const(dbgi, mode, tv);
1059 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1061 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1062 ir_mode *mode = get_ir_mode(cnst->base.type);
1064 long long int v = cnst->v.wide_character.begin[0];
1067 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1068 tarval *tv = new_tarval_from_str(buf, len, mode);
1070 return new_d_Const(dbgi, mode, tv);
1073 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1076 assert(entity != NULL);
1077 union symconst_symbol sym;
1078 sym.entity_p = entity;
1079 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1082 static ir_node *string_to_firm(const source_position_t *const src_pos,
1083 const char *const id_prefix,
1084 const string_t *const value)
1086 ir_type *const global_type = get_glob_type();
1087 dbg_info *const dbgi = get_dbg_info(src_pos);
1088 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1089 ir_type_const_char, dbgi);
1091 ident *const id = id_unique(id_prefix);
1092 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1093 set_entity_ld_ident(entity, id);
1094 set_entity_variability(entity, variability_constant);
1095 set_entity_allocation(entity, allocation_static);
1097 ir_type *const elem_type = ir_type_const_char;
1098 ir_mode *const mode = get_type_mode(elem_type);
1100 const char* const string = value->begin;
1101 const size_t slen = value->size;
1103 set_array_lower_bound_int(type, 0, 0);
1104 set_array_upper_bound_int(type, 0, slen);
1105 set_type_size_bytes(type, slen);
1106 set_type_state(type, layout_fixed);
1108 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1109 for(size_t i = 0; i < slen; ++i) {
1110 tvs[i] = new_tarval_from_long(string[i], mode);
1113 set_array_entity_values(entity, tvs, slen);
1116 return create_symconst(dbgi, mode_P_data, entity);
1119 static ir_node *string_literal_to_firm(
1120 const string_literal_expression_t* literal)
1122 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1126 static ir_node *wide_string_literal_to_firm(
1127 const wide_string_literal_expression_t* const literal)
1129 ir_type *const global_type = get_glob_type();
1130 ir_type *const elem_type = ir_type_wchar_t;
1131 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1132 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1135 ident *const id = id_unique("Lstr.%u");
1136 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1137 set_entity_ld_ident(entity, id);
1138 set_entity_variability(entity, variability_constant);
1139 set_entity_allocation(entity, allocation_static);
1141 ir_mode *const mode = get_type_mode(elem_type);
1143 const wchar_rep_t *const string = literal->value.begin;
1144 const size_t slen = literal->value.size;
1146 set_array_lower_bound_int(type, 0, 0);
1147 set_array_upper_bound_int(type, 0, slen);
1148 set_type_size_bytes(type, slen);
1149 set_type_state(type, layout_fixed);
1151 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1152 for(size_t i = 0; i < slen; ++i) {
1153 tvs[i] = new_tarval_from_long(string[i], mode);
1156 set_array_entity_values(entity, tvs, slen);
1159 return create_symconst(dbgi, mode_P_data, entity);
1162 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1163 dbg_info *const dbgi)
1165 ir_type *irtype = get_ir_type(type);
1166 if (is_compound_type(irtype)
1167 || is_Method_type(irtype)
1168 || is_Array_type(irtype)) {
1172 ir_mode *const mode = get_type_mode(irtype);
1173 ir_node *const memory = get_store();
1174 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1175 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1176 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1178 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1179 set_Load_volatility(load, volatility_is_volatile);
1182 set_store(load_mem);
1186 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1188 ir_mode *mode = get_irn_mode(node);
1190 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1192 if(!mode_is_float(mode))
1195 /* check if there is already a Conv */
1196 if (get_irn_op(node) == op_Conv) {
1197 /* convert it into a strict Conv */
1198 set_Conv_strict(node, 1);
1202 /* otherwise create a new one */
1203 return new_d_strictConv(dbgi, node, mode);
1206 static ir_node *get_global_var_address(dbg_info *const dbgi,
1207 const declaration_t *const decl)
1209 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1211 ir_entity *const entity = decl->v.entity;
1212 switch ((storage_class_tag_t)decl->storage_class) {
1213 case STORAGE_CLASS_THREAD:
1214 case STORAGE_CLASS_THREAD_EXTERN:
1215 case STORAGE_CLASS_THREAD_STATIC: {
1216 ir_node *const no_mem = new_NoMem();
1217 ir_node *const tls = get_irg_tls(current_ir_graph);
1218 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1222 return create_symconst(dbgi, mode_P_data, entity);
1226 /* Returns the correct base address depending on whether it is a parameter or a
1227 * normal local variable */
1228 static ir_node *get_local_frame(ir_entity *const ent)
1230 ir_graph *const irg = current_ir_graph;
1231 const ir_type *const owner = get_entity_owner(ent);
1232 if (owner == get_irg_frame_type(irg)) {
1233 return get_irg_frame(irg);
1235 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1236 return get_irg_value_param_base(irg);
1240 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1242 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1243 declaration_t *declaration = ref->declaration;
1244 type_t *type = skip_typeref(declaration->type);
1246 switch((declaration_kind_t) declaration->declaration_kind) {
1247 case DECLARATION_KIND_UNKNOWN:
1248 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1254 case DECLARATION_KIND_ENUM_ENTRY: {
1255 ir_mode *const mode = get_ir_mode(type);
1256 return new_Const(mode, declaration->v.enum_val);
1259 case DECLARATION_KIND_LOCAL_VARIABLE: {
1260 ir_mode *const mode = get_ir_mode(type);
1261 return get_value(declaration->v.value_number, mode);
1263 case DECLARATION_KIND_FUNCTION: {
1264 ir_mode *const mode = get_ir_mode(type);
1265 return create_symconst(dbgi, mode, declaration->v.entity);
1267 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1268 ir_node *const addr = get_global_var_address(dbgi, declaration);
1269 return deref_address(declaration->type, addr, dbgi);
1272 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1273 ir_entity *entity = declaration->v.entity;
1274 ir_node *frame = get_local_frame(entity);
1275 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1276 return deref_address(declaration->type, sel, dbgi);
1279 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1280 return declaration->v.vla_base;
1282 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1283 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1284 case DECLARATION_KIND_COMPOUND_MEMBER:
1285 case DECLARATION_KIND_LABEL_BLOCK:
1286 panic("not implemented reference type");
1289 panic("reference to declaration with unknown type found");
1292 static ir_node *reference_addr(const reference_expression_t *ref)
1294 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1295 declaration_t *declaration = ref->declaration;
1297 switch((declaration_kind_t) declaration->declaration_kind) {
1298 case DECLARATION_KIND_UNKNOWN:
1300 case DECLARATION_KIND_LOCAL_VARIABLE:
1301 panic("local variable without entity has no address");
1302 case DECLARATION_KIND_FUNCTION: {
1303 type_t *const type = skip_typeref(ref->base.type);
1304 ir_mode *const mode = get_ir_mode(type);
1305 return create_symconst(dbgi, mode, declaration->v.entity);
1307 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1308 ir_node *const addr = get_global_var_address(dbgi, declaration);
1311 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1312 ir_entity *entity = declaration->v.entity;
1313 ir_node *frame = get_local_frame(entity);
1314 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1319 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1320 return declaration->v.vla_base;
1322 case DECLARATION_KIND_ENUM_ENTRY:
1323 panic("trying to reference enum entry");
1325 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1326 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1327 case DECLARATION_KIND_COMPOUND_MEMBER:
1328 case DECLARATION_KIND_LABEL_BLOCK:
1329 panic("not implemented reference type");
1332 panic("reference to declaration with unknown type found");
1335 static ir_node *process_builtin_call(const call_expression_t *call)
1337 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1339 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1340 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1342 type_t *type = skip_typeref(builtin->base.type);
1343 assert(is_type_pointer(type));
1345 type_t *function_type = skip_typeref(type->pointer.points_to);
1346 symbol_t *symbol = builtin->symbol;
1348 switch(symbol->ID) {
1349 case T___builtin_alloca: {
1350 if(call->arguments == NULL || call->arguments->next != NULL) {
1351 panic("invalid number of parameters on __builtin_alloca");
1353 expression_t *argument = call->arguments->expression;
1354 ir_node *size = expression_to_firm(argument);
1356 ir_node *store = get_store();
1357 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1359 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1361 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1365 case T___builtin_nan:
1366 case T___builtin_nanf:
1367 case T___builtin_nand: {
1368 /* Ignore string for now... */
1369 assert(is_type_function(function_type));
1370 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1371 tarval *tv = get_mode_NAN(mode);
1372 ir_node *res = new_d_Const(dbgi, mode, tv);
1375 case T___builtin_va_end:
1378 panic("Unsupported builtin found\n");
1382 static ir_node *call_expression_to_firm(const call_expression_t *call)
1384 assert(get_cur_block() != NULL);
1386 expression_t *function = call->function;
1387 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1388 return process_builtin_call(call);
1390 ir_node *callee = expression_to_firm(function);
1392 type_t *type = skip_typeref(function->base.type);
1393 assert(is_type_pointer(type));
1394 pointer_type_t *pointer_type = &type->pointer;
1395 type_t *points_to = skip_typeref(pointer_type->points_to);
1396 assert(is_type_function(points_to));
1397 function_type_t *function_type = &points_to->function;
1399 int n_parameters = 0;
1400 call_argument_t *argument = call->arguments;
1401 for( ; argument != NULL; argument = argument->next) {
1405 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1407 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1408 ir_type *new_method_type = NULL;
1409 if(function_type->variadic || function_type->unspecified_parameters) {
1410 /* we need to construct a new method type matching the call
1412 int n_res = get_method_n_ress(ir_method_type);
1413 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1414 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1415 n_parameters, n_res, dbgi);
1416 set_method_calling_convention(new_method_type,
1417 get_method_calling_convention(ir_method_type));
1418 set_method_additional_properties(new_method_type,
1419 get_method_additional_properties(ir_method_type));
1420 set_method_variadicity(new_method_type,
1421 get_method_variadicity(ir_method_type));
1423 for(int i = 0; i < n_res; ++i) {
1424 set_method_res_type(new_method_type, i,
1425 get_method_res_type(ir_method_type, i));
1428 ir_node *in[n_parameters];
1430 argument = call->arguments;
1432 for( ; argument != NULL; argument = argument->next) {
1433 expression_t *expression = argument->expression;
1434 ir_node *arg_node = expression_to_firm(expression);
1436 arg_node = do_strict_conv(dbgi, arg_node);
1439 if(new_method_type != NULL) {
1440 ir_type *irtype = get_ir_type(expression->base.type);
1441 set_method_param_type(new_method_type, n, irtype);
1446 assert(n == n_parameters);
1448 if(new_method_type != NULL)
1449 ir_method_type = new_method_type;
1451 ir_node *store = get_store();
1452 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1454 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1457 type_t *return_type = skip_typeref(function_type->return_type);
1458 ir_node *result = NULL;
1460 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1462 if(is_type_scalar(return_type)) {
1463 mode = get_ir_mode(return_type);
1467 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1468 result = new_d_Proj(dbgi, resproj, mode, 0);
1474 static void statement_to_firm(statement_t *statement);
1475 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1477 static ir_node *expression_to_addr(const expression_t *expression);
1478 static void create_condition_evaluation(const expression_t *expression,
1479 ir_node *true_block,
1480 ir_node *false_block);
1482 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1485 value = do_strict_conv(dbgi, value);
1487 ir_node *memory = get_store();
1489 if(is_type_scalar(type)) {
1490 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1491 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1492 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1493 set_Store_volatility(store, volatility_is_volatile);
1494 set_store(store_mem);
1496 ir_type *irtype = get_ir_type(type);
1497 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1498 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1499 set_store(copyb_mem);
1503 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1505 tarval *all_one = get_mode_all_one(mode);
1506 int mode_size = get_mode_size_bits(mode);
1508 assert(offset >= 0 && size >= 0);
1509 assert(offset + size <= mode_size);
1510 if(size == mode_size) {
1514 long shiftr = get_mode_size_bits(mode) - size;
1515 long shiftl = offset;
1516 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1517 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1518 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1519 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1524 static void bitfield_store_to_firm(const unary_expression_t *expression,
1527 expression_t *select = expression->value;
1528 assert(select->kind == EXPR_SELECT);
1529 type_t *type = select->base.type;
1530 assert(type->kind == TYPE_BITFIELD);
1531 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1532 ir_node *addr = expression_to_addr(select);
1534 assert(get_irn_mode(value) == mode);
1536 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1538 /* kill upper bits of value and shift to right position */
1539 ir_entity *entity = select->select.compound_entry->v.entity;
1540 int bitoffset = get_entity_offset_bits_remainder(entity);
1541 ir_type *entity_type = get_entity_type(entity);
1542 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1544 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1545 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1546 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1547 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1548 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1549 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1551 /* load current value */
1552 ir_node *mem = get_store();
1553 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1554 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1555 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1556 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1557 tarval *inv_mask = tarval_not(shift_mask);
1558 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1559 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1561 /* construct new value and store */
1562 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1563 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1564 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1565 set_store(store_mem);
1567 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1568 set_Load_volatility(load, volatility_is_volatile);
1569 set_Store_volatility(store, volatility_is_volatile);
1573 static void set_value_for_expression(const expression_t *expression,
1576 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1577 value = do_strict_conv(dbgi, value);
1579 if(expression->kind == EXPR_REFERENCE) {
1580 const reference_expression_t *ref = &expression->reference;
1582 declaration_t *declaration = ref->declaration;
1583 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1584 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1585 set_value(declaration->v.value_number, value);
1590 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1591 bitfield_store_to_firm(&expression->unary, value);
1595 ir_node *addr = expression_to_addr(expression);
1596 type_t *type = skip_typeref(expression->base.type);
1597 assign_value(dbgi, addr, type, value);
1600 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1602 ir_mode *value_mode = get_irn_mode(value);
1604 if (value_mode == dest_mode || is_Bad(value))
1607 if(dest_mode == mode_b) {
1608 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1609 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1610 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1614 return new_d_Conv(dbgi, value, dest_mode);
1617 static ir_node *create_incdec(const unary_expression_t *expression)
1619 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1620 type_t *type = skip_typeref(expression->base.type);
1621 ir_mode *mode = get_ir_mode(type);
1622 expression_t *value = expression->value;
1624 ir_node *value_node = expression_to_firm(value);
1627 if(is_type_pointer(type)) {
1628 pointer_type_t *pointer_type = &type->pointer;
1629 offset = get_type_size(pointer_type->points_to);
1631 assert(is_type_arithmetic(type));
1632 offset = new_Const(mode, get_mode_one(mode));
1635 switch(expression->base.kind) {
1636 case EXPR_UNARY_POSTFIX_INCREMENT: {
1637 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1638 set_value_for_expression(value, new_value);
1641 case EXPR_UNARY_POSTFIX_DECREMENT: {
1642 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1643 set_value_for_expression(value, new_value);
1646 case EXPR_UNARY_PREFIX_INCREMENT: {
1647 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1648 set_value_for_expression(value, new_value);
1651 case EXPR_UNARY_PREFIX_DECREMENT: {
1652 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1653 set_value_for_expression(value, new_value);
1657 panic("no incdec expr in create_incdec");
1662 static bool is_local_variable(expression_t *expression)
1664 if (expression->kind != EXPR_REFERENCE)
1666 reference_expression_t *ref_expr = &expression->reference;
1667 declaration_t *declaration = ref_expr->declaration;
1668 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1671 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1674 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1675 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1676 case EXPR_BINARY_NOTEQUAL:
1677 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1678 case EXPR_BINARY_ISLESS:
1679 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1680 case EXPR_BINARY_ISLESSEQUAL:
1681 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1682 case EXPR_BINARY_ISGREATER:
1683 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1684 case EXPR_BINARY_ISGREATEREQUAL:
1685 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1686 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1691 panic("trying to get pn_Cmp from non-comparison binexpr type");
1695 * Handle the assume optimizer hint: check if a Confirm
1696 * node can be created.
1698 * @param dbi debug info
1699 * @param expr the IL assume expression
1701 * we support here only some simple cases:
1706 static ir_node *handle_assume_compare(dbg_info *dbi,
1707 const binary_expression_t *expression)
1709 expression_t *op1 = expression->left;
1710 expression_t *op2 = expression->right;
1711 declaration_t *var2, *var = NULL;
1712 ir_node *res = NULL;
1715 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1717 if (is_local_variable(op1) && is_local_variable(op2)) {
1718 var = op1->reference.declaration;
1719 var2 = op2->reference.declaration;
1721 type_t *const type = skip_typeref(var->type);
1722 ir_mode *const mode = get_ir_mode(type);
1724 ir_node *const irn1 = get_value(var->v.value_number, mode);
1725 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1727 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1728 set_value(var2->v.value_number, res);
1730 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1731 set_value(var->v.value_number, res);
1737 if (is_local_variable(op1) && is_constant_expression(op2)) {
1738 var = op1->reference.declaration;
1740 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1741 cmp_val = get_inversed_pnc(cmp_val);
1742 var = op2->reference.declaration;
1747 type_t *const type = skip_typeref(var->type);
1748 ir_mode *const mode = get_ir_mode(type);
1750 res = get_value(var->v.value_number, mode);
1751 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1752 set_value(var->v.value_number, res);
1758 * Handle the assume optimizer hint.
1760 * @param dbi debug info
1761 * @param expr the IL assume expression
1763 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1764 switch(expression->kind) {
1765 case EXPR_BINARY_EQUAL:
1766 case EXPR_BINARY_NOTEQUAL:
1767 case EXPR_BINARY_LESS:
1768 case EXPR_BINARY_LESSEQUAL:
1769 case EXPR_BINARY_GREATER:
1770 case EXPR_BINARY_GREATEREQUAL:
1771 return handle_assume_compare(dbi, &expression->binary);
1777 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1779 expression_t *select = expression->value;
1780 assert(select->kind == EXPR_SELECT);
1782 type_t *type = select->base.type;
1783 assert(type->kind == TYPE_BITFIELD);
1784 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1785 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1786 ir_node *addr = expression_to_addr(select);
1787 ir_node *mem = get_store();
1788 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1789 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1790 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1792 load_res = create_conv(dbgi, load_res, mode_int);
1794 set_store(load_mem);
1796 /* kill upper bits */
1797 ir_entity *entity = select->select.compound_entry->v.entity;
1798 int bitoffset = get_entity_offset_bits_remainder(entity);
1799 ir_type *entity_type = get_entity_type(entity);
1800 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1801 long shift_bitsl = machine_size - bitoffset - bitsize;
1802 assert(shift_bitsl >= 0);
1803 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1804 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1805 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1807 long shift_bitsr = bitoffset + shift_bitsl;
1808 assert(shift_bitsr <= (long) machine_size);
1809 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1810 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1812 if(mode_is_signed(mode)) {
1813 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1815 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1818 return create_conv(dbgi, shiftr, mode);
1821 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1823 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1824 type_t *type = skip_typeref(expression->base.type);
1826 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1827 return expression_to_addr(expression->value);
1829 const expression_t *value = expression->value;
1831 switch(expression->base.kind) {
1832 case EXPR_UNARY_NEGATE: {
1833 ir_node *value_node = expression_to_firm(value);
1834 ir_mode *mode = get_ir_mode(type);
1835 return new_d_Minus(dbgi, value_node, mode);
1837 case EXPR_UNARY_PLUS:
1838 return expression_to_firm(value);
1839 case EXPR_UNARY_BITWISE_NEGATE: {
1840 ir_node *value_node = expression_to_firm(value);
1841 ir_mode *mode = get_ir_mode(type);
1842 return new_d_Not(dbgi, value_node, mode);
1844 case EXPR_UNARY_NOT: {
1845 ir_node *value_node = expression_to_firm(value);
1846 ir_mode *mode = get_ir_mode(type);
1847 if(get_irn_mode(value_node) != mode_b) {
1848 value_node = create_conv(dbgi, value_node, mode_b);
1850 value_node = new_d_Not(dbgi, value_node, mode_b);
1851 if(mode != mode_b) {
1852 value_node = create_conv(dbgi, value_node, mode);
1856 case EXPR_UNARY_DEREFERENCE: {
1857 ir_node *value_node = expression_to_firm(value);
1858 type_t *value_type = skip_typeref(value->base.type);
1859 assert(is_type_pointer(value_type));
1860 type_t *points_to = value_type->pointer.points_to;
1861 return deref_address(points_to, value_node, dbgi);
1863 case EXPR_UNARY_POSTFIX_INCREMENT:
1864 case EXPR_UNARY_POSTFIX_DECREMENT:
1865 case EXPR_UNARY_PREFIX_INCREMENT:
1866 case EXPR_UNARY_PREFIX_DECREMENT:
1867 return create_incdec(expression);
1868 case EXPR_UNARY_CAST: {
1869 ir_node *value_node = expression_to_firm(value);
1870 if(is_type_scalar(type)) {
1871 ir_mode *mode = get_ir_mode(type);
1872 ir_node *node = create_conv(dbgi, value_node, mode);
1873 node = do_strict_conv(dbgi, node);
1876 /* make sure firm type is constructed */
1877 (void) get_ir_type(type);
1881 case EXPR_UNARY_CAST_IMPLICIT: {
1882 ir_node *value_node = expression_to_firm(value);
1883 if(is_type_scalar(type)) {
1884 ir_mode *mode = get_ir_mode(type);
1885 return create_conv(dbgi, value_node, mode);
1890 case EXPR_UNARY_ASSUME:
1891 if(firm_opt.confirm)
1892 return handle_assume(dbgi, value);
1895 case EXPR_UNARY_BITFIELD_EXTRACT:
1896 return bitfield_extract_to_firm(expression);
1901 panic("invalid UNEXPR type found");
1904 static ir_node *produce_condition_result(const expression_t *expression,
1907 ir_mode *mode = get_ir_mode(expression->base.type);
1908 ir_node *cur_block = get_cur_block();
1910 ir_node *one_block = new_immBlock();
1911 ir_node *one = new_Const(mode, get_mode_one(mode));
1912 ir_node *jmp_one = new_d_Jmp(dbgi);
1914 ir_node *zero_block = new_immBlock();
1915 ir_node *zero = new_Const(mode, get_mode_null(mode));
1916 ir_node *jmp_zero = new_d_Jmp(dbgi);
1918 set_cur_block(cur_block);
1919 create_condition_evaluation(expression, one_block, zero_block);
1920 mature_immBlock(one_block);
1921 mature_immBlock(zero_block);
1923 ir_node *common_block = new_immBlock();
1924 add_immBlock_pred(common_block, jmp_one);
1925 add_immBlock_pred(common_block, jmp_zero);
1926 mature_immBlock(common_block);
1928 ir_node *in[2] = { one, zero };
1929 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1934 static ir_node *create_lazy_op(const binary_expression_t *expression)
1936 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1937 type_t *type = expression->base.type;
1938 ir_mode *mode = get_ir_mode(type);
1940 if(is_constant_expression(expression->left)) {
1941 long val = fold_constant(expression->left);
1942 expression_kind_t ekind = expression->base.kind;
1943 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1944 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1945 return expression_to_firm(expression->right);
1947 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1948 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1949 return new_Const(mode, get_mode_one(mode));
1953 return produce_condition_result((const expression_t*) expression, dbgi);
1956 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1957 ir_node *right, ir_mode *mode);
1959 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1960 create_arithmetic_func func)
1962 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1963 ir_node *left = expression_to_firm(expression->left);
1964 ir_node *right = expression_to_firm(expression->right);
1965 type_t *type = expression->right->base.type;
1966 /* be careful with the modes, because in arithmetic assign nodes only
1967 * the right operand has the mode of the arithmetic already */
1968 ir_mode *mode = get_ir_mode(type);
1969 left = create_conv(dbgi, left, mode);
1970 ir_node *res = func(dbgi, left, right, mode);
1975 static ir_node *pointer_arithmetic(ir_node *const pointer,
1978 dbg_info *const dbgi,
1979 const create_arithmetic_func func)
1981 pointer_type_t *const pointer_type = &type->pointer;
1982 type_t *const points_to = pointer_type->points_to;
1983 const unsigned elem_size = get_type_size_const(points_to);
1985 assert(elem_size >= 1);
1986 if (elem_size > 1) {
1987 integer = create_conv(dbgi, integer, mode_int);
1988 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1989 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1993 ir_mode *const mode = get_ir_mode(type);
1994 return func(dbgi, pointer, integer, mode);
1997 static ir_node *create_arithmetic_assign_binop(
1998 const binary_expression_t *expression, create_arithmetic_func func)
2000 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2001 type_t *const type = skip_typeref(expression->base.type);
2004 if (is_type_pointer(type)) {
2005 ir_node *const pointer = expression_to_firm(expression->left);
2006 ir_node * integer = expression_to_firm(expression->right);
2007 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2009 value = create_arithmetic_binop(expression, func);
2012 ir_mode *const mode = get_ir_mode(type);
2013 value = create_conv(dbgi, value, mode);
2014 set_value_for_expression(expression->left, value);
2019 static ir_node *create_add(const binary_expression_t *expression)
2021 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2022 ir_node *left = expression_to_firm(expression->left);
2023 ir_node *right = expression_to_firm(expression->right);
2024 type_t *type = expression->base.type;
2026 expression_t *expr_left = expression->left;
2027 expression_t *expr_right = expression->right;
2028 type_t *type_left = skip_typeref(expr_left->base.type);
2029 type_t *type_right = skip_typeref(expr_right->base.type);
2031 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2032 ir_mode *const mode = get_ir_mode(type);
2033 return new_d_Add(dbgi, left, right, mode);
2036 if (is_type_pointer(type_left)) {
2037 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2039 assert(is_type_pointer(type_right));
2040 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2044 static ir_node *create_sub(const binary_expression_t *expression)
2046 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2047 expression_t *const expr_left = expression->left;
2048 expression_t *const expr_right = expression->right;
2049 ir_node *const left = expression_to_firm(expr_left);
2050 ir_node *const right = expression_to_firm(expr_right);
2051 type_t *const type = expression->base.type;
2052 type_t *const type_left = skip_typeref(expr_left->base.type);
2053 type_t *const type_right = skip_typeref(expr_right->base.type);
2055 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2056 ir_mode *const mode = get_ir_mode(type);
2057 return new_d_Sub(dbgi, left, right, mode);
2058 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2059 const pointer_type_t *const ptr_type = &type_left->pointer;
2061 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2062 ir_mode *const mode = get_ir_mode(type);
2063 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2064 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2065 ir_node *const no_mem = new_NoMem();
2066 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2067 op_pin_state_floats);
2068 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2071 assert(is_type_pointer(type_left));
2072 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2075 static ir_node *create_shift(const binary_expression_t *expression)
2077 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2078 ir_node *left = expression_to_firm(expression->left);
2079 ir_node *right = expression_to_firm(expression->right);
2080 type_t *type = expression->base.type;
2081 ir_mode *mode = get_ir_mode(type);
2083 /* firm always wants the shift count to be unsigned */
2084 right = create_conv(dbgi, right, mode_uint);
2088 switch(expression->base.kind) {
2089 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2090 case EXPR_BINARY_SHIFTLEFT:
2091 res = new_d_Shl(dbgi, left, right, mode);
2093 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2094 case EXPR_BINARY_SHIFTRIGHT: {
2095 expression_t *expr_left = expression->left;
2096 type_t *type_left = skip_typeref(expr_left->base.type);
2098 if(is_type_signed(type_left)) {
2099 res = new_d_Shrs(dbgi, left, right, mode);
2101 res = new_d_Shr(dbgi, left, right, mode);
2106 panic("create shift op called for non-shift op");
2113 static ir_node *create_divmod(const binary_expression_t *expression)
2115 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2116 ir_node *left = expression_to_firm(expression->left);
2117 ir_node *right = expression_to_firm(expression->right);
2118 ir_node *pin = new_Pin(new_NoMem());
2119 /* be careful with the modes, because in arithmetic assign nodes only
2120 * the right operand has the mode of the arithmetic already */
2121 type_t *type = expression->right->base.type;
2122 ir_mode *mode = get_ir_mode(type);
2123 left = create_conv(dbgi, left, mode);
2127 switch (expression->base.kind) {
2128 case EXPR_BINARY_DIV:
2129 case EXPR_BINARY_DIV_ASSIGN:
2130 if(mode_is_float(mode)) {
2131 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2132 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2134 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2135 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2139 case EXPR_BINARY_MOD:
2140 case EXPR_BINARY_MOD_ASSIGN:
2141 assert(!mode_is_float(mode));
2142 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2143 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2146 default: panic("unexpected binary expression type in create_divmod()");
2152 static ir_node *create_arithmetic_assign_divmod(
2153 const binary_expression_t *expression)
2155 ir_node * value = create_divmod(expression);
2156 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2157 type_t *const type = expression->base.type;
2158 ir_mode *const mode = get_ir_mode(type);
2160 assert(type->kind != TYPE_POINTER);
2162 value = create_conv(dbgi, value, mode);
2163 set_value_for_expression(expression->left, value);
2168 static ir_node *create_arithmetic_assign_shift(
2169 const binary_expression_t *expression)
2171 ir_node * value = create_shift(expression);
2172 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2173 type_t *const type = expression->base.type;
2174 ir_mode *const mode = get_ir_mode(type);
2176 value = create_conv(dbgi, value, mode);
2177 set_value_for_expression(expression->left, value);
2182 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2184 expression_kind_t kind = expression->base.kind;
2187 case EXPR_BINARY_EQUAL:
2188 case EXPR_BINARY_NOTEQUAL:
2189 case EXPR_BINARY_LESS:
2190 case EXPR_BINARY_LESSEQUAL:
2191 case EXPR_BINARY_GREATER:
2192 case EXPR_BINARY_GREATEREQUAL:
2193 case EXPR_BINARY_ISGREATER:
2194 case EXPR_BINARY_ISGREATEREQUAL:
2195 case EXPR_BINARY_ISLESS:
2196 case EXPR_BINARY_ISLESSEQUAL:
2197 case EXPR_BINARY_ISLESSGREATER:
2198 case EXPR_BINARY_ISUNORDERED: {
2199 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2200 ir_node *left = expression_to_firm(expression->left);
2201 ir_node *right = expression_to_firm(expression->right);
2202 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2203 long pnc = get_pnc(kind, expression->left->base.type);
2204 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2207 case EXPR_BINARY_ASSIGN: {
2208 ir_node *right = expression_to_firm(expression->right);
2209 set_value_for_expression(expression->left, right);
2213 case EXPR_BINARY_ADD:
2214 return create_add(expression);
2215 case EXPR_BINARY_SUB:
2216 return create_sub(expression);
2217 case EXPR_BINARY_MUL:
2218 return create_arithmetic_binop(expression, new_d_Mul);
2219 case EXPR_BINARY_BITWISE_AND:
2220 return create_arithmetic_binop(expression, new_d_And);
2221 case EXPR_BINARY_BITWISE_OR:
2222 return create_arithmetic_binop(expression, new_d_Or);
2223 case EXPR_BINARY_BITWISE_XOR:
2224 return create_arithmetic_binop(expression, new_d_Eor);
2225 case EXPR_BINARY_SHIFTLEFT:
2226 case EXPR_BINARY_SHIFTRIGHT:
2227 return create_shift(expression);
2228 case EXPR_BINARY_DIV:
2229 case EXPR_BINARY_MOD:
2230 return create_divmod(expression);
2231 case EXPR_BINARY_LOGICAL_AND:
2232 case EXPR_BINARY_LOGICAL_OR:
2233 return create_lazy_op(expression);
2234 case EXPR_BINARY_COMMA:
2235 expression_to_firm(expression->left);
2236 return expression_to_firm(expression->right);
2237 case EXPR_BINARY_ADD_ASSIGN:
2238 return create_arithmetic_assign_binop(expression, new_d_Add);
2239 case EXPR_BINARY_SUB_ASSIGN:
2240 return create_arithmetic_assign_binop(expression, new_d_Sub);
2241 case EXPR_BINARY_MUL_ASSIGN:
2242 return create_arithmetic_assign_binop(expression, new_d_Mul);
2243 case EXPR_BINARY_MOD_ASSIGN:
2244 case EXPR_BINARY_DIV_ASSIGN:
2245 return create_arithmetic_assign_divmod(expression);
2246 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2247 return create_arithmetic_assign_binop(expression, new_d_And);
2248 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2249 return create_arithmetic_assign_binop(expression, new_d_Or);
2250 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2251 return create_arithmetic_assign_binop(expression, new_d_Eor);
2252 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2253 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2254 return create_arithmetic_assign_shift(expression);
2255 case EXPR_BINARY_BUILTIN_EXPECT:
2256 return expression_to_firm(expression->left);
2258 panic("TODO binexpr type");
2262 static ir_node *array_access_addr(const array_access_expression_t *expression)
2264 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2265 ir_node *base_addr = expression_to_firm(expression->array_ref);
2266 ir_node *offset = expression_to_firm(expression->index);
2267 offset = create_conv(dbgi, offset, mode_uint);
2269 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2270 assert(is_type_pointer(ref_type));
2271 pointer_type_t *pointer_type = &ref_type->pointer;
2273 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2274 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2276 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2281 static ir_node *array_access_to_firm(
2282 const array_access_expression_t *expression)
2284 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2285 ir_node *addr = array_access_addr(expression);
2286 type_t *type = revert_automatic_type_conversion(
2287 (const expression_t*) expression);
2288 type = skip_typeref(type);
2290 return deref_address(type, addr, dbgi);
2293 static long get_offsetof_offset(const offsetof_expression_t *expression)
2295 type_t *orig_type = expression->type;
2298 designator_t *designator = expression->designator;
2299 for( ; designator != NULL; designator = designator->next) {
2300 type_t *type = skip_typeref(orig_type);
2301 /* be sure the type is constructed */
2302 (void) get_ir_type(type);
2304 if(designator->symbol != NULL) {
2305 assert(is_type_compound(type));
2306 symbol_t *symbol = designator->symbol;
2308 declaration_t *declaration = type->compound.declaration;
2309 declaration_t *iter = declaration->scope.declarations;
2310 for( ; iter != NULL; iter = iter->next) {
2311 if(iter->symbol == symbol) {
2315 assert(iter != NULL);
2317 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2318 offset += get_entity_offset(iter->v.entity);
2320 orig_type = iter->type;
2322 expression_t *array_index = designator->array_index;
2323 assert(designator->array_index != NULL);
2324 assert(is_type_array(type));
2325 assert(is_type_valid(array_index->base.type));
2327 long index = fold_constant(array_index);
2328 ir_type *arr_type = get_ir_type(type);
2329 ir_type *elem_type = get_array_element_type(arr_type);
2330 long elem_size = get_type_size_bytes(elem_type);
2332 offset += index * elem_size;
2334 orig_type = type->array.element_type;
2341 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2343 ir_mode *mode = get_ir_mode(expression->base.type);
2344 long offset = get_offsetof_offset(expression);
2345 tarval *tv = new_tarval_from_long(offset, mode);
2346 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2348 return new_d_Const(dbgi, mode, tv);
2351 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2352 ir_entity *entity, type_t *type);
2354 static ir_node *compound_literal_to_firm(
2355 const compound_literal_expression_t *expression)
2357 type_t *type = expression->type;
2359 /* create an entity on the stack */
2360 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2362 ident *const id = id_unique("CompLit.%u");
2363 ir_type *const irtype = get_ir_type(type);
2364 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2365 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2366 set_entity_ld_ident(entity, id);
2368 set_entity_variability(entity, variability_uninitialized);
2370 /* create initialisation code */
2371 initializer_t *initializer = expression->initializer;
2372 create_local_initializer(initializer, dbgi, entity, type);
2374 /* create a sel for the compound literal address */
2375 ir_node *frame = get_local_frame(entity);
2376 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2381 * Transform a sizeof expression into Firm code.
2383 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2385 type_t *type = expression->type;
2387 type = expression->tp_expression->base.type;
2388 assert(type != NULL);
2391 type = skip_typeref(type);
2392 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2393 if(is_type_array(type) && type->array.is_vla
2394 && expression->tp_expression != NULL) {
2395 expression_to_firm(expression->tp_expression);
2398 return get_type_size(type);
2402 * Transform an alignof expression into Firm code.
2404 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2406 type_t *type = expression->type;
2408 /* beware: if expression is a variable reference, return the
2409 alignment of the variable. */
2410 const expression_t *tp_expression = expression->tp_expression;
2411 const declaration_t *declaration = expr_is_variable(tp_expression);
2412 if (declaration != NULL) {
2413 /* TODO: get the alignment of this variable. */
2415 type = tp_expression->base.type;
2416 assert(type != NULL);
2419 ir_mode *const mode = get_ir_mode(expression->base.type);
2420 symconst_symbol sym;
2421 sym.type_p = get_ir_type(type);
2422 return new_SymConst(mode, sym, symconst_type_align);
2425 static void init_ir_types(void);
2426 long fold_constant(const expression_t *expression)
2430 assert(is_constant_expression(expression));
2432 ir_graph *old_current_ir_graph = current_ir_graph;
2433 if(current_ir_graph == NULL) {
2434 current_ir_graph = get_const_code_irg();
2437 ir_node *cnst = expression_to_firm(expression);
2438 current_ir_graph = old_current_ir_graph;
2440 if(!is_Const(cnst)) {
2441 panic("couldn't fold constant\n");
2444 tarval *tv = get_Const_tarval(cnst);
2445 if(!tarval_is_long(tv)) {
2446 panic("result of constant folding is not integer\n");
2449 return get_tarval_long(tv);
2452 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2454 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2456 /* first try to fold a constant condition */
2457 if(is_constant_expression(expression->condition)) {
2458 long val = fold_constant(expression->condition);
2460 return expression_to_firm(expression->true_expression);
2462 return expression_to_firm(expression->false_expression);
2466 ir_node *cur_block = get_cur_block();
2468 /* create the true block */
2469 ir_node *true_block = new_immBlock();
2471 ir_node *true_val = expression_to_firm(expression->true_expression);
2472 ir_node *true_jmp = new_Jmp();
2474 /* create the false block */
2475 ir_node *false_block = new_immBlock();
2477 ir_node *false_val = expression_to_firm(expression->false_expression);
2478 ir_node *false_jmp = new_Jmp();
2480 /* create the condition evaluation */
2481 set_cur_block(cur_block);
2482 create_condition_evaluation(expression->condition, true_block, false_block);
2483 mature_immBlock(true_block);
2484 mature_immBlock(false_block);
2486 /* create the common block */
2487 ir_node *common_block = new_immBlock();
2488 add_immBlock_pred(common_block, true_jmp);
2489 add_immBlock_pred(common_block, false_jmp);
2490 mature_immBlock(common_block);
2492 /* TODO improve static semantics, so either both or no values are NULL */
2493 if (true_val == NULL || false_val == NULL)
2496 ir_node *in[2] = { true_val, false_val };
2497 ir_mode *mode = get_irn_mode(true_val);
2498 assert(get_irn_mode(false_val) == mode);
2499 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2504 static ir_node *select_addr(const select_expression_t *expression)
2506 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2508 ir_node *compound_addr = expression_to_firm(expression->compound);
2510 /* make sure the type is constructed */
2511 type_t *type = skip_typeref(expression->compound->base.type);
2512 if (is_type_pointer(type)) {
2513 type = type->pointer.points_to;
2515 (void) get_ir_type(type);
2517 declaration_t *entry = expression->compound_entry;
2518 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2519 ir_entity *entity = entry->v.entity;
2521 assert(entity != NULL);
2523 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2528 static ir_node *select_to_firm(const select_expression_t *expression)
2530 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2531 ir_node *addr = select_addr(expression);
2532 type_t *type = revert_automatic_type_conversion(
2533 (const expression_t*) expression);
2534 type = skip_typeref(type);
2536 return deref_address(type, addr, dbgi);
2539 /* Values returned by __builtin_classify_type. */
2540 typedef enum gcc_type_class
2546 enumeral_type_class,
2549 reference_type_class,
2553 function_type_class,
2564 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2566 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2572 const atomic_type_t *const atomic_type = &type->atomic;
2573 switch (atomic_type->akind) {
2574 /* should not be reached */
2575 case ATOMIC_TYPE_INVALID:
2579 /* gcc cannot do that */
2580 case ATOMIC_TYPE_VOID:
2581 tc = void_type_class;
2584 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2585 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2586 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2587 case ATOMIC_TYPE_SHORT:
2588 case ATOMIC_TYPE_USHORT:
2589 case ATOMIC_TYPE_INT:
2590 case ATOMIC_TYPE_UINT:
2591 case ATOMIC_TYPE_LONG:
2592 case ATOMIC_TYPE_ULONG:
2593 case ATOMIC_TYPE_LONGLONG:
2594 case ATOMIC_TYPE_ULONGLONG:
2595 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2596 tc = integer_type_class;
2599 case ATOMIC_TYPE_FLOAT:
2600 case ATOMIC_TYPE_DOUBLE:
2601 case ATOMIC_TYPE_LONG_DOUBLE:
2602 tc = real_type_class;
2605 panic("Unexpected atomic type in classify_type_to_firm().");
2608 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2609 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2610 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2611 case TYPE_ARRAY: /* gcc handles this as pointer */
2612 case TYPE_FUNCTION: /* gcc handles this as pointer */
2613 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2614 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2615 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2617 /* gcc handles this as integer */
2618 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2621 /* typedef/typeof should be skipped already */
2628 panic("unexpected TYPE classify_type_to_firm().");
2631 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2632 ir_mode *const mode = mode_int;
2633 tarval *const tv = new_tarval_from_long(tc, mode);
2634 return new_d_Const(dbgi, mode, tv);
2637 static ir_node *function_name_to_firm(
2638 const funcname_expression_t *const expr)
2640 switch(expr->kind) {
2641 case FUNCNAME_FUNCTION:
2642 case FUNCNAME_PRETTY_FUNCTION:
2643 case FUNCNAME_FUNCDNAME:
2644 if (current_function_name == NULL) {
2645 const source_position_t *const src_pos = &expr->base.source_position;
2646 const char *const name = current_function_decl->symbol->string;
2647 const string_t string = { name, strlen(name) + 1 };
2648 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2650 return current_function_name;
2651 case FUNCNAME_FUNCSIG:
2652 if (current_funcsig == NULL) {
2653 const source_position_t *const src_pos = &expr->base.source_position;
2654 ir_entity *ent = get_irg_entity(current_ir_graph);
2655 const char *const name = get_entity_ld_name(ent);
2656 const string_t string = { name, strlen(name) + 1 };
2657 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2659 return current_funcsig;
2661 panic("Unsupported function name");
2664 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2666 statement_t *statement = expr->statement;
2668 assert(statement->kind == STATEMENT_COMPOUND);
2669 return compound_statement_to_firm(&statement->compound);
2672 static ir_node *va_start_expression_to_firm(
2673 const va_start_expression_t *const expr)
2675 ir_type *const method_type = get_ir_type(current_function_decl->type);
2676 int const n = get_method_n_params(method_type) - 1;
2677 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2678 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2679 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2680 ir_node *const no_mem = new_NoMem();
2681 ir_node *const arg_sel =
2682 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2684 ir_node *const cnst = get_type_size(expr->parameter->type);
2685 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2686 set_value_for_expression(expr->ap, add);
2691 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2693 type_t *const type = expr->base.type;
2694 ir_node *const ap = expression_to_firm(expr->ap);
2695 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2696 ir_node *const res = deref_address(type, ap, dbgi);
2698 ir_node *const cnst = get_type_size(expr->base.type);
2699 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2700 set_value_for_expression(expr->ap, add);
2705 static ir_node *dereference_addr(const unary_expression_t *const expression)
2707 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2708 return expression_to_firm(expression->value);
2711 static ir_node *expression_to_addr(const expression_t *expression)
2713 switch(expression->kind) {
2714 case EXPR_REFERENCE:
2715 return reference_addr(&expression->reference);
2716 case EXPR_ARRAY_ACCESS:
2717 return array_access_addr(&expression->array_access);
2719 return select_addr(&expression->select);
2721 return call_expression_to_firm(&expression->call);
2722 case EXPR_UNARY_DEREFERENCE: {
2723 return dereference_addr(&expression->unary);
2728 panic("trying to get address of non-lvalue");
2731 static ir_node *builtin_constant_to_firm(
2732 const builtin_constant_expression_t *expression)
2734 ir_mode *mode = get_ir_mode(expression->base.type);
2737 if (is_constant_expression(expression->value)) {
2742 return new_Const_long(mode, v);
2745 static ir_node *builtin_prefetch_to_firm(
2746 const builtin_prefetch_expression_t *expression)
2748 ir_node *adr = expression_to_firm(expression->adr);
2749 /* no Firm support for prefetch yet */
2754 static ir_node *_expression_to_firm(const expression_t *expression)
2756 switch(expression->kind) {
2757 case EXPR_CHARACTER_CONSTANT:
2758 return character_constant_to_firm(&expression->conste);
2759 case EXPR_WIDE_CHARACTER_CONSTANT:
2760 return wide_character_constant_to_firm(&expression->conste);
2762 return const_to_firm(&expression->conste);
2763 case EXPR_STRING_LITERAL:
2764 return string_literal_to_firm(&expression->string);
2765 case EXPR_WIDE_STRING_LITERAL:
2766 return wide_string_literal_to_firm(&expression->wide_string);
2767 case EXPR_REFERENCE:
2768 return reference_expression_to_firm(&expression->reference);
2770 return call_expression_to_firm(&expression->call);
2772 return unary_expression_to_firm(&expression->unary);
2774 return binary_expression_to_firm(&expression->binary);
2775 case EXPR_ARRAY_ACCESS:
2776 return array_access_to_firm(&expression->array_access);
2778 return sizeof_to_firm(&expression->typeprop);
2780 return alignof_to_firm(&expression->typeprop);
2781 case EXPR_CONDITIONAL:
2782 return conditional_to_firm(&expression->conditional);
2784 return select_to_firm(&expression->select);
2785 case EXPR_CLASSIFY_TYPE:
2786 return classify_type_to_firm(&expression->classify_type);
2788 return function_name_to_firm(&expression->funcname);
2789 case EXPR_STATEMENT:
2790 return statement_expression_to_firm(&expression->statement);
2792 return va_start_expression_to_firm(&expression->va_starte);
2794 return va_arg_expression_to_firm(&expression->va_arge);
2795 case EXPR_BUILTIN_SYMBOL:
2796 panic("unimplemented expression found");
2797 case EXPR_BUILTIN_CONSTANT_P:
2798 return builtin_constant_to_firm(&expression->builtin_constant);
2799 case EXPR_BUILTIN_PREFETCH:
2800 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2802 return offsetof_to_firm(&expression->offsetofe);
2803 case EXPR_COMPOUND_LITERAL:
2804 return compound_literal_to_firm(&expression->compound_literal);
2810 panic("invalid expression found");
2813 static ir_node *expression_to_firm(const expression_t *expression)
2815 ir_node *res = _expression_to_firm(expression);
2817 if(res != NULL && get_irn_mode(res) == mode_b) {
2818 ir_mode *mode = get_ir_mode(expression->base.type);
2820 if(is_Const_null(res)) {
2821 return new_Const_long(mode, 0);
2823 assert(is_Const_one(res));
2824 return new_Const_long(mode, 1);
2828 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2829 return produce_condition_result(expression, dbgi);
2835 static ir_node *expression_to_modeb(const expression_t *expression)
2837 ir_node *res = _expression_to_firm(expression);
2838 res = create_conv(NULL, res, mode_b);
2844 * create a short-circuit expression evaluation that tries to construct
2845 * efficient control flow structures for &&, || and ! expressions
2847 static void create_condition_evaluation(const expression_t *expression,
2848 ir_node *true_block,
2849 ir_node *false_block)
2851 switch(expression->kind) {
2852 case EXPR_UNARY_NOT: {
2853 const unary_expression_t *unary_expression = &expression->unary;
2854 create_condition_evaluation(unary_expression->value, false_block,
2858 case EXPR_BINARY_LOGICAL_AND: {
2859 const binary_expression_t *binary_expression = &expression->binary;
2861 ir_node *cur_block = get_cur_block();
2862 ir_node *extra_block = new_immBlock();
2863 set_cur_block(cur_block);
2864 create_condition_evaluation(binary_expression->left, extra_block,
2866 mature_immBlock(extra_block);
2867 set_cur_block(extra_block);
2868 create_condition_evaluation(binary_expression->right, true_block,
2872 case EXPR_BINARY_LOGICAL_OR: {
2873 const binary_expression_t *binary_expression = &expression->binary;
2875 ir_node *cur_block = get_cur_block();
2876 ir_node *extra_block = new_immBlock();
2877 set_cur_block(cur_block);
2878 create_condition_evaluation(binary_expression->left, true_block,
2880 mature_immBlock(extra_block);
2881 set_cur_block(extra_block);
2882 create_condition_evaluation(binary_expression->right, true_block,
2890 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2891 ir_node *condition = expression_to_modeb(expression);
2892 ir_node *cond = new_d_Cond(dbgi, condition);
2893 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2894 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2896 /* set branch prediction info based on __builtin_expect */
2897 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2898 long cnst = fold_constant(expression->binary.right);
2899 cond_jmp_predicate pred;
2902 pred = COND_JMP_PRED_FALSE;
2904 pred = COND_JMP_PRED_TRUE;
2906 set_Cond_jmp_pred(cond, pred);
2909 add_immBlock_pred(true_block, true_proj);
2910 add_immBlock_pred(false_block, false_proj);
2912 set_cur_block(NULL);
2917 static void create_declaration_entity(declaration_t *declaration,
2918 declaration_kind_t declaration_kind,
2919 ir_type *parent_type)
2921 ident *const id = new_id_from_str(declaration->symbol->string);
2922 type_t *const type = skip_typeref(declaration->type);
2923 ir_type *const irtype = get_ir_type(type);
2924 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2925 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2927 declaration->declaration_kind = (unsigned char) declaration_kind;
2928 declaration->v.entity = entity;
2929 set_entity_variability(entity, variability_uninitialized);
2930 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
2931 if(parent_type == get_tls_type())
2932 set_entity_allocation(entity, allocation_automatic);
2933 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2934 set_entity_allocation(entity, allocation_static);
2936 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2937 set_entity_volatility(entity, volatility_is_volatile);
2942 typedef struct type_path_entry_t type_path_entry_t;
2943 struct type_path_entry_t {
2945 ir_initializer_t *initializer;
2947 declaration_t *compound_entry;
2950 typedef struct type_path_t type_path_t;
2951 struct type_path_t {
2952 type_path_entry_t *path;
2957 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2959 size_t len = ARR_LEN(path->path);
2961 for(size_t i = 0; i < len; ++i) {
2962 const type_path_entry_t *entry = & path->path[i];
2964 type_t *type = skip_typeref(entry->type);
2965 if(is_type_compound(type)) {
2966 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2967 } else if(is_type_array(type)) {
2968 fprintf(stderr, "[%zd]", entry->index);
2970 fprintf(stderr, "-INVALID-");
2973 fprintf(stderr, " (");
2974 print_type(path->top_type);
2975 fprintf(stderr, ")");
2978 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2980 size_t len = ARR_LEN(path->path);
2982 return & path->path[len-1];
2985 static type_path_entry_t *append_to_type_path(type_path_t *path)
2987 size_t len = ARR_LEN(path->path);
2988 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2990 type_path_entry_t *result = & path->path[len];
2991 memset(result, 0, sizeof(result[0]));
2995 static size_t get_compound_size(const compound_type_t *type)
2997 declaration_t *declaration = type->declaration;
2998 declaration_t *member = declaration->scope.declarations;
3000 for( ; member != NULL; member = member->next) {
3003 /* TODO: cache results? */
3008 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3010 type_t *orig_top_type = path->top_type;
3011 type_t *top_type = skip_typeref(orig_top_type);
3013 assert(is_type_compound(top_type) || is_type_array(top_type));
3015 if(ARR_LEN(path->path) == 0) {
3018 type_path_entry_t *top = get_type_path_top(path);
3019 ir_initializer_t *initializer = top->initializer;
3020 return get_initializer_compound_value(initializer, top->index);
3024 static void descend_into_subtype(type_path_t *path)
3026 type_t *orig_top_type = path->top_type;
3027 type_t *top_type = skip_typeref(orig_top_type);
3029 assert(is_type_compound(top_type) || is_type_array(top_type));
3031 ir_initializer_t *initializer = get_initializer_entry(path);
3033 type_path_entry_t *top = append_to_type_path(path);
3034 top->type = top_type;
3038 if(is_type_compound(top_type)) {
3039 declaration_t *declaration = top_type->compound.declaration;
3040 declaration_t *entry = declaration->scope.declarations;
3042 top->compound_entry = entry;
3044 len = get_compound_size(&top_type->compound);
3046 path->top_type = entry->type;
3048 assert(is_type_array(top_type));
3049 assert(top_type->array.size > 0);
3052 path->top_type = top_type->array.element_type;
3053 len = top_type->array.size;
3055 if(initializer == NULL
3056 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3057 initializer = create_initializer_compound(len);
3058 /* we have to set the entry at the 2nd latest path entry... */
3059 size_t path_len = ARR_LEN(path->path);
3060 assert(path_len >= 1);
3062 type_path_entry_t *entry = & path->path[path_len-2];
3063 ir_initializer_t *tinitializer = entry->initializer;
3064 set_initializer_compound_value(tinitializer, entry->index,
3068 top->initializer = initializer;
3071 static void ascend_from_subtype(type_path_t *path)
3073 type_path_entry_t *top = get_type_path_top(path);
3075 path->top_type = top->type;
3077 size_t len = ARR_LEN(path->path);
3078 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3081 static void walk_designator(type_path_t *path, const designator_t *designator)
3083 /* designators start at current object type */
3084 ARR_RESIZE(type_path_entry_t, path->path, 1);
3086 for( ; designator != NULL; designator = designator->next) {
3087 type_path_entry_t *top = get_type_path_top(path);
3088 type_t *orig_type = top->type;
3089 type_t *type = skip_typeref(orig_type);
3091 if(designator->symbol != NULL) {
3092 assert(is_type_compound(type));
3094 symbol_t *symbol = designator->symbol;
3096 declaration_t *declaration = type->compound.declaration;
3097 declaration_t *iter = declaration->scope.declarations;
3098 for( ; iter != NULL; iter = iter->next, ++index) {
3099 if(iter->symbol == symbol) {
3103 assert(iter != NULL);
3105 top->type = orig_type;
3106 top->compound_entry = iter;
3108 orig_type = iter->type;
3110 expression_t *array_index = designator->array_index;
3111 assert(designator->array_index != NULL);
3112 assert(is_type_array(type));
3113 assert(is_type_valid(array_index->base.type));
3115 long index = fold_constant(array_index);
3118 if(type->array.size_constant == 1) {
3119 long array_size = type->array.size;
3120 assert(index < array_size);
3124 top->type = orig_type;
3125 top->index = (size_t) index;
3126 orig_type = type->array.element_type;
3128 path->top_type = orig_type;
3130 if(designator->next != NULL) {
3131 descend_into_subtype(path);
3135 path->invalid = false;
3138 static void advance_current_object(type_path_t *path)
3141 /* TODO: handle this... */
3142 panic("invalid initializer in ast2firm (excessive elements)");
3146 type_path_entry_t *top = get_type_path_top(path);
3148 type_t *type = skip_typeref(top->type);
3149 if(is_type_union(type)) {
3150 top->compound_entry = NULL;
3151 } else if(is_type_struct(type)) {
3152 declaration_t *entry = top->compound_entry;
3155 entry = entry->next;
3156 top->compound_entry = entry;
3158 path->top_type = entry->type;
3162 assert(is_type_array(type));
3165 if(!type->array.size_constant || top->index < type->array.size) {
3170 /* we're past the last member of the current sub-aggregate, try if we
3171 * can ascend in the type hierarchy and continue with another subobject */
3172 size_t len = ARR_LEN(path->path);
3175 ascend_from_subtype(path);
3176 advance_current_object(path);
3178 path->invalid = true;
3183 static ir_initializer_t *create_ir_initializer(
3184 const initializer_t *initializer, type_t *type);
3186 static ir_initializer_t *create_ir_initializer_value(
3187 const initializer_value_t *initializer)
3189 if (is_type_compound(initializer->value->base.type)) {
3190 panic("initializer creation for compounds not implemented yet");
3192 ir_node *value = expression_to_firm(initializer->value);
3193 return create_initializer_const(value);
3196 static ir_initializer_t *create_ir_initializer_list(
3197 const initializer_list_t *initializer, type_t *type)
3200 memset(&path, 0, sizeof(path));
3201 path.top_type = type;
3202 path.path = NEW_ARR_F(type_path_entry_t, 0);
3204 descend_into_subtype(&path);
3206 for(size_t i = 0; i < initializer->len; ++i) {
3207 const initializer_t *sub_initializer = initializer->initializers[i];
3209 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3210 walk_designator(&path, sub_initializer->designator.designator);
3214 if(sub_initializer->kind == INITIALIZER_VALUE) {
3215 /* we might have to descend into types until we're at a scalar
3218 type_t *orig_top_type = path.top_type;
3219 type_t *top_type = skip_typeref(orig_top_type);
3221 if(is_type_scalar(top_type))
3223 descend_into_subtype(&path);
3227 ir_initializer_t *sub_irinitializer
3228 = create_ir_initializer(sub_initializer, path.top_type);
3230 size_t path_len = ARR_LEN(path.path);
3231 assert(path_len >= 1);
3232 type_path_entry_t *entry = & path.path[path_len-1];
3233 ir_initializer_t *tinitializer = entry->initializer;
3234 set_initializer_compound_value(tinitializer, entry->index,
3237 advance_current_object(&path);
3240 assert(ARR_LEN(path.path) >= 1);
3241 ir_initializer_t *result = path.path[0].initializer;
3242 DEL_ARR_F(path.path);
3247 static ir_initializer_t *create_ir_initializer_string(
3248 const initializer_string_t *initializer, type_t *type)
3250 type = skip_typeref(type);
3252 size_t string_len = initializer->string.size;
3253 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3254 size_t len = type->array.size;
3255 ir_initializer_t *irinitializer = create_initializer_compound(len);
3257 const char *string = initializer->string.begin;
3258 ir_mode *mode = get_type_mode(ir_type_const_char);
3260 for(size_t i = 0; i < len; ++i) {
3265 tarval *tv = new_tarval_from_long(c, mode);
3266 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3268 set_initializer_compound_value(irinitializer, i, char_initializer);
3271 return irinitializer;
3274 static ir_initializer_t *create_ir_initializer_wide_string(
3275 const initializer_wide_string_t *initializer, type_t *type)
3277 size_t string_len = initializer->string.size;
3278 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3279 size_t len = type->array.size;
3280 ir_initializer_t *irinitializer = create_initializer_compound(len);
3282 const wchar_rep_t *string = initializer->string.begin;
3283 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3285 for(size_t i = 0; i < len; ++i) {
3287 if(i < string_len) {
3290 tarval *tv = new_tarval_from_long(c, mode);
3291 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3293 set_initializer_compound_value(irinitializer, i, char_initializer);
3296 return irinitializer;
3299 static ir_initializer_t *create_ir_initializer(
3300 const initializer_t *initializer, type_t *type)
3302 switch(initializer->kind) {
3303 case INITIALIZER_STRING:
3304 return create_ir_initializer_string(&initializer->string, type);
3306 case INITIALIZER_WIDE_STRING:
3307 return create_ir_initializer_wide_string(&initializer->wide_string,
3310 case INITIALIZER_LIST:
3311 return create_ir_initializer_list(&initializer->list, type);
3313 case INITIALIZER_VALUE:
3314 return create_ir_initializer_value(&initializer->value);
3316 case INITIALIZER_DESIGNATOR:
3317 panic("unexpected designator initializer found");
3319 panic("unknown initializer");
3322 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3325 if (is_atomic_type(type)) {
3326 ir_mode *mode = get_type_mode(type);
3327 tarval *zero = get_mode_null(mode);
3328 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3330 /* TODO: bitfields */
3331 ir_node *mem = get_store();
3332 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3333 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3336 assert(is_compound_type(type));
3339 if(is_Array_type(type)) {
3340 assert(has_array_upper_bound(type, 0));
3341 n_members = get_array_upper_bound_int(type, 0);
3343 n_members = get_compound_n_members(type);
3346 for(int i = 0; i < n_members; ++i) {
3349 if(is_Array_type(type)) {
3350 ir_entity *entity = get_array_element_entity(type);
3351 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3352 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3353 ir_node *in[1] = { cnst };
3354 irtype = get_array_element_type(type);
3355 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3357 ir_entity *member = get_compound_member(type, i);
3359 irtype = get_entity_type(member);
3360 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3363 create_dynamic_null_initializer(irtype, dbgi, addr);
3368 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3369 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3371 switch(get_initializer_kind(initializer)) {
3372 case IR_INITIALIZER_NULL: {
3373 create_dynamic_null_initializer(type, dbgi, base_addr);
3376 case IR_INITIALIZER_CONST: {
3377 ir_node *node = get_initializer_const_value(initializer);
3378 ir_mode *mode = get_irn_mode(node);
3379 assert(get_type_mode(type) == mode);
3381 /* TODO: bitfields... */
3382 ir_node *mem = get_store();
3383 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3384 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3388 case IR_INITIALIZER_TARVAL: {
3389 tarval *tv = get_initializer_tarval_value(initializer);
3390 ir_mode *mode = get_tarval_mode(tv);
3391 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3392 assert(get_type_mode(type) == mode);
3394 /* TODO: bitfields... */
3395 ir_node *mem = get_store();
3396 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3397 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3401 case IR_INITIALIZER_COMPOUND: {
3402 assert(is_compound_type(type));
3404 if(is_Array_type(type)) {
3405 assert(has_array_upper_bound(type, 0));
3406 n_members = get_array_upper_bound_int(type, 0);
3408 n_members = get_compound_n_members(type);
3411 if(get_initializer_compound_n_entries(initializer)
3412 != (unsigned) n_members)
3413 panic("initializer doesn't match compound type");
3415 for(int i = 0; i < n_members; ++i) {
3418 if(is_Array_type(type)) {
3419 ir_entity *entity = get_array_element_entity(type);
3420 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3421 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3422 ir_node *in[1] = { cnst };
3423 irtype = get_array_element_type(type);
3424 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3426 ir_entity *member = get_compound_member(type, i);
3428 irtype = get_entity_type(member);
3429 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3432 ir_initializer_t *sub_init
3433 = get_initializer_compound_value(initializer, i);
3435 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3441 panic("invalid IR_INITIALIZER found");
3444 static void create_dynamic_initializer(ir_initializer_t *initializer,
3445 dbg_info *dbgi, ir_entity *entity)
3447 ir_node *frame = get_local_frame(entity);
3448 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3449 ir_type *type = get_entity_type(entity);
3451 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3454 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3455 ir_entity *entity, type_t *type)
3457 ir_node *memory = get_store();
3458 ir_node *nomem = new_NoMem();
3459 ir_node *frame = get_irg_frame(current_ir_graph);
3460 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3462 if(initializer->kind == INITIALIZER_VALUE) {
3463 initializer_value_t *initializer_value = &initializer->value;
3465 ir_node *value = expression_to_firm(initializer_value->value);
3466 type = skip_typeref(type);
3467 assign_value(dbgi, addr, type, value);
3471 if(!is_constant_initializer(initializer)) {
3472 ir_initializer_t *irinitializer
3473 = create_ir_initializer(initializer, type);
3475 create_dynamic_initializer(irinitializer, dbgi, entity);
3479 /* create the ir_initializer */
3480 ir_graph *const old_current_ir_graph = current_ir_graph;
3481 current_ir_graph = get_const_code_irg();
3483 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3485 assert(current_ir_graph == get_const_code_irg());
3486 current_ir_graph = old_current_ir_graph;
3488 /* create a "template" entity which is copied to the entity on the stack */
3489 ident *const id = id_unique("initializer.%u");
3490 ir_type *const irtype = get_ir_type(type);
3491 ir_type *const global_type = get_glob_type();
3492 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3493 set_entity_ld_ident(init_entity, id);
3495 set_entity_variability(init_entity, variability_initialized);
3496 set_entity_visibility(init_entity, visibility_local);
3497 set_entity_allocation(init_entity, allocation_static);
3499 set_entity_initializer(init_entity, irinitializer);
3501 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3502 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3504 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3505 set_store(copyb_mem);
3508 static void create_initializer_local_variable_entity(declaration_t *declaration)
3510 initializer_t *initializer = declaration->init.initializer;
3511 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3512 ir_entity *entity = declaration->v.entity;
3513 type_t *type = declaration->type;
3514 create_local_initializer(initializer, dbgi, entity, type);
3517 static void create_declaration_initializer(declaration_t *declaration)
3519 initializer_t *initializer = declaration->init.initializer;
3520 if(initializer == NULL)
3523 declaration_kind_t declaration_kind
3524 = (declaration_kind_t) declaration->declaration_kind;
3525 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3526 create_initializer_local_variable_entity(declaration);
3530 if(initializer->kind == INITIALIZER_VALUE) {
3531 initializer_value_t *initializer_value = &initializer->value;
3533 ir_node *value = expression_to_firm(initializer_value->value);
3535 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3536 set_value(declaration->v.value_number, value);
3538 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3540 ir_entity *entity = declaration->v.entity;
3542 set_entity_variability(entity, variability_initialized);
3543 set_atomic_ent_value(entity, value);
3546 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3547 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3549 ir_entity *entity = declaration->v.entity;
3550 ir_initializer_t *irinitializer
3551 = create_ir_initializer(initializer, declaration->type);
3553 set_entity_variability(entity, variability_initialized);
3554 set_entity_initializer(entity, irinitializer);
3558 static void create_variable_length_array(declaration_t *declaration)
3560 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3561 type_t *type = declaration->type;
3562 ir_node *mem = get_store();
3563 ir_type *el_type = get_ir_type(type->array.element_type);
3565 /* make sure size_node is calculated */
3566 get_type_size(type);
3567 ir_node *elems = type->array.size_node;
3568 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3570 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3571 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3574 /* initializers are not allowed for VLAs */
3575 assert(declaration->init.initializer == NULL);
3577 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3578 declaration->v.vla_base = addr;
3580 /* TODO: record VLA somewhere so we create the free node when we leave
3585 * Creates a Firm local variable from a declaration.
3587 static void create_local_variable(declaration_t *declaration)
3589 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3591 bool needs_entity = declaration->address_taken;
3592 type_t *type = skip_typeref(declaration->type);
3594 /* is it a variable length array? */
3595 if(is_type_array(type) && !type->array.size_constant) {
3596 create_variable_length_array(declaration);
3598 } else if(is_type_array(type) || is_type_compound(type)) {
3599 needs_entity = true;
3600 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3601 needs_entity = true;
3605 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3606 create_declaration_entity(declaration,
3607 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3610 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3611 declaration->v.value_number = next_value_number_function;
3612 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3613 ++next_value_number_function;
3616 create_declaration_initializer(declaration);
3619 static void create_local_static_variable(declaration_t *declaration)
3621 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3623 type_t *const type = skip_typeref(declaration->type);
3624 ir_type *const global_type = get_glob_type();
3625 ident *const id = new_id_from_str(declaration->symbol->string);
3626 ir_type *const irtype = get_ir_type(type);
3627 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3628 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3630 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3631 set_entity_volatility(entity, volatility_is_volatile);
3634 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3635 declaration->v.entity = entity;
3636 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3637 set_entity_variability(entity, variability_uninitialized);
3638 set_entity_visibility(entity, visibility_local);
3639 set_entity_allocation(entity, allocation_static);
3641 ir_graph *const old_current_ir_graph = current_ir_graph;
3642 current_ir_graph = get_const_code_irg();
3644 create_declaration_initializer(declaration);
3646 assert(current_ir_graph == get_const_code_irg());
3647 current_ir_graph = old_current_ir_graph;
3652 static void return_statement_to_firm(return_statement_t *statement)
3654 if(get_cur_block() == NULL)
3657 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3658 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3663 if(get_method_n_ress(func_irtype) > 0) {
3664 ir_type *res_type = get_method_res_type(func_irtype, 0);
3666 if(statement->value != NULL) {
3667 ir_node *node = expression_to_firm(statement->value);
3668 node = do_strict_conv(dbgi, node);
3672 if(is_compound_type(res_type)) {
3675 mode = get_type_mode(res_type);
3677 in[0] = new_Unknown(mode);
3681 /* build return_value for its side effects */
3682 if(statement->value != NULL) {
3683 expression_to_firm(statement->value);
3688 ir_node *store = get_store();
3689 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3691 ir_node *end_block = get_irg_end_block(current_ir_graph);
3692 add_immBlock_pred(end_block, ret);
3694 set_cur_block(NULL);
3697 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3699 if(get_cur_block() == NULL)
3702 return expression_to_firm(statement->expression);
3705 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3707 ir_node *result = NULL;
3708 statement_t *statement = compound->statements;
3709 for( ; statement != NULL; statement = statement->base.next) {
3710 //context2firm(&statement->scope);
3712 if(statement->base.next == NULL
3713 && statement->kind == STATEMENT_EXPRESSION) {
3714 result = expression_statement_to_firm(
3715 &statement->expression);
3718 statement_to_firm(statement);
3724 static void create_global_variable(declaration_t *declaration)
3728 switch ((storage_class_tag_t)declaration->storage_class) {
3729 case STORAGE_CLASS_STATIC:
3730 vis = visibility_local;
3733 case STORAGE_CLASS_EXTERN:
3734 vis = visibility_external_allocated;
3737 case STORAGE_CLASS_NONE:
3738 vis = visibility_external_visible;
3741 case STORAGE_CLASS_THREAD:
3742 vis = visibility_external_visible;
3745 case STORAGE_CLASS_THREAD_EXTERN:
3746 vis = visibility_external_allocated;
3749 case STORAGE_CLASS_THREAD_STATIC:
3750 vis = visibility_local;
3754 var_type = get_tls_type();
3758 var_type = get_glob_type();
3762 create_declaration_entity(declaration,
3763 DECLARATION_KIND_GLOBAL_VARIABLE,
3765 set_entity_visibility(declaration->v.entity, vis);
3769 case STORAGE_CLASS_TYPEDEF:
3770 case STORAGE_CLASS_AUTO:
3771 case STORAGE_CLASS_REGISTER:
3772 case STORAGE_CLASS_ENUM_ENTRY:
3775 panic("Invalid storage class for global variable");
3778 static void create_local_declaration(declaration_t *declaration)
3780 if(declaration->symbol == NULL)
3783 type_t *type = skip_typeref(declaration->type);
3785 switch ((storage_class_tag_t) declaration->storage_class) {
3786 case STORAGE_CLASS_STATIC:
3787 create_local_static_variable(declaration);
3789 case STORAGE_CLASS_EXTERN:
3790 create_global_variable(declaration);
3791 create_declaration_initializer(declaration);
3793 case STORAGE_CLASS_NONE:
3794 case STORAGE_CLASS_AUTO:
3795 case STORAGE_CLASS_REGISTER:
3796 if(is_type_function(type)) {
3797 if(declaration->init.statement != NULL) {
3798 panic("nested functions not supported yet");
3800 get_function_entity(declaration);
3803 create_local_variable(declaration);
3806 case STORAGE_CLASS_ENUM_ENTRY:
3807 case STORAGE_CLASS_TYPEDEF:
3808 case STORAGE_CLASS_THREAD:
3809 case STORAGE_CLASS_THREAD_EXTERN:
3810 case STORAGE_CLASS_THREAD_STATIC:
3813 panic("invalid storage class found");
3816 static void declaration_statement_to_firm(declaration_statement_t *statement)
3818 declaration_t *declaration = statement->declarations_begin;
3819 declaration_t *end = statement->declarations_end->next;
3820 for( ; declaration != end; declaration = declaration->next) {
3821 if(declaration->namespc != NAMESPACE_NORMAL)
3823 create_local_declaration(declaration);
3827 static void if_statement_to_firm(if_statement_t *statement)
3829 ir_node *cur_block = get_cur_block();
3831 ir_node *fallthrough_block = new_immBlock();
3833 /* the true (blocks) */
3834 ir_node *true_block;
3835 if (statement->true_statement != NULL) {
3836 true_block = new_immBlock();
3837 statement_to_firm(statement->true_statement);
3838 if(get_cur_block() != NULL) {
3839 ir_node *jmp = new_Jmp();
3840 add_immBlock_pred(fallthrough_block, jmp);
3843 true_block = fallthrough_block;
3846 /* the false (blocks) */
3847 ir_node *false_block;
3848 if(statement->false_statement != NULL) {
3849 false_block = new_immBlock();
3851 statement_to_firm(statement->false_statement);
3852 if(get_cur_block() != NULL) {
3853 ir_node *jmp = new_Jmp();
3854 add_immBlock_pred(fallthrough_block, jmp);
3857 false_block = fallthrough_block;
3860 /* create the condition */
3861 if(cur_block != NULL) {
3862 set_cur_block(cur_block);
3863 create_condition_evaluation(statement->condition, true_block,
3867 mature_immBlock(true_block);
3868 if(false_block != fallthrough_block) {
3869 mature_immBlock(false_block);
3871 mature_immBlock(fallthrough_block);
3873 set_cur_block(fallthrough_block);
3876 static void while_statement_to_firm(while_statement_t *statement)
3878 ir_node *jmp = NULL;
3879 if(get_cur_block() != NULL) {
3883 /* create the header block */
3884 ir_node *header_block = new_immBlock();
3886 add_immBlock_pred(header_block, jmp);
3889 /* the false block */
3890 ir_node *false_block = new_immBlock();
3893 ir_node *body_block;
3894 if (statement->body != NULL) {
3895 ir_node *old_continue_label = continue_label;
3896 ir_node *old_break_label = break_label;
3897 continue_label = header_block;
3898 break_label = false_block;
3900 body_block = new_immBlock();
3901 statement_to_firm(statement->body);
3903 assert(continue_label == header_block);
3904 assert(break_label == false_block);
3905 continue_label = old_continue_label;
3906 break_label = old_break_label;
3908 if(get_cur_block() != NULL) {
3910 add_immBlock_pred(header_block, jmp);
3913 body_block = header_block;
3916 /* create the condition */
3917 set_cur_block(header_block);
3919 create_condition_evaluation(statement->condition, body_block, false_block);
3920 mature_immBlock(body_block);
3921 mature_immBlock(false_block);
3922 mature_immBlock(header_block);
3924 set_cur_block(false_block);
3927 static void do_while_statement_to_firm(do_while_statement_t *statement)
3929 ir_node *jmp = NULL;
3930 if(get_cur_block() != NULL) {
3934 /* create the header block */
3935 ir_node *header_block = new_immBlock();
3937 /* the false block */
3938 ir_node *false_block = new_immBlock();
3941 ir_node *body_block = new_immBlock();
3943 add_immBlock_pred(body_block, jmp);
3946 if (statement->body != NULL) {
3947 ir_node *old_continue_label = continue_label;
3948 ir_node *old_break_label = break_label;
3949 continue_label = header_block;
3950 break_label = false_block;
3952 statement_to_firm(statement->body);
3954 assert(continue_label == header_block);
3955 assert(break_label == false_block);
3956 continue_label = old_continue_label;
3957 break_label = old_break_label;
3959 if (get_cur_block() == NULL) {
3960 mature_immBlock(header_block);
3961 mature_immBlock(body_block);
3962 mature_immBlock(false_block);
3967 ir_node *body_jmp = new_Jmp();
3968 add_immBlock_pred(header_block, body_jmp);
3969 mature_immBlock(header_block);
3971 /* create the condition */
3972 set_cur_block(header_block);
3974 create_condition_evaluation(statement->condition, body_block, false_block);
3975 mature_immBlock(body_block);
3976 mature_immBlock(false_block);
3977 mature_immBlock(header_block);
3979 set_cur_block(false_block);
3982 static void for_statement_to_firm(for_statement_t *statement)
3984 ir_node *jmp = NULL;
3985 if (get_cur_block() != NULL) {
3986 if(statement->initialisation != NULL) {
3987 expression_to_firm(statement->initialisation);
3990 /* create declarations */
3991 declaration_t *declaration = statement->scope.declarations;
3992 for( ; declaration != NULL; declaration = declaration->next) {
3993 create_local_declaration(declaration);
4000 /* create the step block */
4001 ir_node *const step_block = new_immBlock();
4002 if (statement->step != NULL) {
4003 expression_to_firm(statement->step);
4005 ir_node *const step_jmp = new_Jmp();
4007 /* create the header block */
4008 ir_node *const header_block = new_immBlock();
4010 add_immBlock_pred(header_block, jmp);
4012 add_immBlock_pred(header_block, step_jmp);
4014 /* the false block */
4015 ir_node *const false_block = new_immBlock();
4018 ir_node * body_block;
4019 if (statement->body != NULL) {
4020 ir_node *const old_continue_label = continue_label;
4021 ir_node *const old_break_label = break_label;
4022 continue_label = step_block;
4023 break_label = false_block;
4025 body_block = new_immBlock();
4026 statement_to_firm(statement->body);
4028 assert(continue_label == step_block);
4029 assert(break_label == false_block);
4030 continue_label = old_continue_label;
4031 break_label = old_break_label;
4033 if (get_cur_block() != NULL) {
4035 add_immBlock_pred(step_block, jmp);
4038 body_block = step_block;
4041 /* create the condition */
4042 set_cur_block(header_block);
4043 if (statement->condition != NULL) {
4044 create_condition_evaluation(statement->condition, body_block,
4047 keep_alive(header_block);
4049 add_immBlock_pred(body_block, jmp);
4052 mature_immBlock(body_block);
4053 mature_immBlock(false_block);
4054 mature_immBlock(step_block);
4055 mature_immBlock(header_block);
4056 mature_immBlock(false_block);
4058 set_cur_block(false_block);
4061 static void create_jump_statement(const statement_t *statement,
4062 ir_node *target_block)
4064 if(get_cur_block() == NULL)
4067 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4068 ir_node *jump = new_d_Jmp(dbgi);
4069 add_immBlock_pred(target_block, jump);
4071 set_cur_block(NULL);
4074 static void switch_statement_to_firm(const switch_statement_t *statement)
4076 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4078 ir_node *expression = expression_to_firm(statement->expression);
4079 ir_node *cond = new_d_Cond(dbgi, expression);
4080 ir_node *break_block = new_immBlock();
4082 set_cur_block(NULL);
4084 ir_node *const old_switch_cond = current_switch_cond;
4085 ir_node *const old_break_label = break_label;
4086 const bool old_saw_default_label = saw_default_label;
4087 current_switch_cond = cond;
4088 break_label = break_block;
4090 if (statement->body != NULL) {
4091 statement_to_firm(statement->body);
4094 if(get_cur_block() != NULL) {
4095 ir_node *jmp = new_Jmp();
4096 add_immBlock_pred(break_block, jmp);
4099 if (!saw_default_label) {
4100 set_cur_block(get_nodes_block(cond));
4101 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4102 MAGIC_DEFAULT_PN_NUMBER);
4103 add_immBlock_pred(break_block, proj);
4106 assert(current_switch_cond == cond);
4107 assert(break_label == break_block);
4108 current_switch_cond = old_switch_cond;
4109 break_label = old_break_label;
4110 saw_default_label = old_saw_default_label;
4112 mature_immBlock(break_block);
4113 set_cur_block(break_block);
4116 static void case_label_to_firm(const case_label_statement_t *statement)
4118 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4120 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4122 /* let's create a node and hope firm constant folding creates a Const
4125 ir_node *old_block = get_nodes_block(current_switch_cond);
4126 ir_node *block = new_immBlock();
4128 set_cur_block(old_block);
4129 if(statement->expression != NULL) {
4130 long start_pn = fold_constant(statement->expression);
4131 long end_pn = start_pn;
4132 if (statement->end_range != NULL) {
4133 end_pn = fold_constant(statement->end_range);
4135 assert(start_pn <= end_pn);
4136 /* create jumps for all cases in the given range */
4137 for (long pn = start_pn; pn <= end_pn; ++pn) {
4138 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4139 /* oops someone detected our cheating... */
4140 panic("magic default pn used");
4142 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4143 add_immBlock_pred(block, proj);
4146 saw_default_label = true;
4147 proj = new_d_defaultProj(dbgi, current_switch_cond,
4148 MAGIC_DEFAULT_PN_NUMBER);
4150 add_immBlock_pred(block, proj);
4153 if (fallthrough != NULL) {
4154 add_immBlock_pred(block, fallthrough);
4156 mature_immBlock(block);
4157 set_cur_block(block);
4159 if(statement->statement != NULL) {
4160 statement_to_firm(statement->statement);
4164 static ir_node *get_label_block(declaration_t *label)
4166 assert(label->namespc == NAMESPACE_LABEL);
4168 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4169 return label->v.block;
4171 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4173 ir_node *old_cur_block = get_cur_block();
4174 ir_node *block = new_immBlock();
4175 set_cur_block(old_cur_block);
4177 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4178 label->v.block = block;
4180 ARR_APP1(ir_node *, imature_blocks, block);
4185 static void label_to_firm(const label_statement_t *statement)
4187 ir_node *block = get_label_block(statement->label);
4189 if(get_cur_block() != NULL) {
4190 ir_node *jmp = new_Jmp();
4191 add_immBlock_pred(block, jmp);
4194 set_cur_block(block);
4197 if(statement->statement != NULL) {
4198 statement_to_firm(statement->statement);
4202 static void goto_to_firm(const goto_statement_t *statement)
4204 if(get_cur_block() == NULL)
4207 ir_node *block = get_label_block(statement->label);
4208 ir_node *jmp = new_Jmp();
4209 add_immBlock_pred(block, jmp);
4211 set_cur_block(NULL);
4214 typedef enum modifier_t {
4215 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4216 ASM_MODIFIER_READ_WRITE = 1 << 1,
4217 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4218 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4221 static void asm_statement_to_firm(const asm_statement_t *statement)
4224 fprintf(stderr, "WARNING asm not implemented yet!\n");
4226 bool needs_memory = false;
4228 size_t n_clobbers = 0;
4229 asm_clobber_t *clobber = statement->clobbers;
4230 for( ; clobber != NULL; clobber = clobber->next) {
4231 if(strcmp(clobber->clobber, "memory") == 0) {
4232 needs_memory = true;
4236 ident *id = new_id_from_str(clobber->clobber);
4237 obstack_ptr_grow(&asm_obst, id);
4240 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4241 ident **clobbers = NULL;
4242 if(n_clobbers > 0) {
4243 clobbers = obstack_finish(&asm_obst);
4246 /* find and count input and output constraints */
4247 asm_constraint_t *constraint = statement->inputs;
4248 for( ; constraint != NULL; constraint = constraint->next) {
4250 bool supports_memop = false;
4251 for(const char *c = constraint->constraints; *c != 0; ++c) {
4252 /* TODO: improve error messages */
4256 panic("multiple alternative assembler constraints not "
4264 supports_memop = true;
4265 obstack_1grow(&asm_obst, *c);
4268 if(modifiers & ASM_MODIFIER_READ_WRITE)
4269 panic("inconsistent register constraints");
4270 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4273 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4274 panic("inconsistent register constraints");
4275 modifiers |= ASM_MODIFIER_READ_WRITE;
4278 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4279 panic("early clobber assembler constraint not supported yet");
4282 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4283 panic("commutative assembler constraint not supported yet");
4286 /* skip register preferences stuff... */
4287 while(*c != 0 && *c != ',')
4291 /* skip register preferences stuff... */
4295 obstack_1grow(&asm_obst, *c);
4299 obstack_1grow(&asm_obst, '\0');
4300 const char *constraint_string = obstack_finish(&asm_obst);
4302 needs_memory |= supports_memop;
4303 if(supports_memop) {
4310 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4311 statement_to_firm(statement->try_statement);
4312 warningf(&statement->base.source_position, "structured exception handling ignored");
4315 static void leave_statement_to_firm(leave_statement_t *statement) {
4316 errorf(&statement->base.source_position, "__leave not supported yet");
4319 static void statement_to_firm(statement_t *statement)
4321 switch(statement->kind) {
4322 case STATEMENT_INVALID:
4323 panic("invalid statement found");
4325 case STATEMENT_EMPTY:
4328 case STATEMENT_COMPOUND:
4329 compound_statement_to_firm(&statement->compound);
4331 case STATEMENT_RETURN:
4332 return_statement_to_firm(&statement->returns);
4334 case STATEMENT_EXPRESSION:
4335 expression_statement_to_firm(&statement->expression);
4338 if_statement_to_firm(&statement->ifs);
4340 case STATEMENT_WHILE:
4341 while_statement_to_firm(&statement->whiles);
4343 case STATEMENT_DO_WHILE:
4344 do_while_statement_to_firm(&statement->do_while);
4346 case STATEMENT_DECLARATION:
4347 declaration_statement_to_firm(&statement->declaration);
4349 case STATEMENT_BREAK:
4350 create_jump_statement(statement, break_label);
4352 case STATEMENT_CONTINUE:
4353 create_jump_statement(statement, continue_label);
4355 case STATEMENT_SWITCH:
4356 switch_statement_to_firm(&statement->switchs);
4358 case STATEMENT_CASE_LABEL:
4359 case_label_to_firm(&statement->case_label);
4362 for_statement_to_firm(&statement->fors);
4364 case STATEMENT_LABEL:
4365 label_to_firm(&statement->label);
4367 case STATEMENT_GOTO:
4368 goto_to_firm(&statement->gotos);
4371 asm_statement_to_firm(&statement->asms);
4373 case STATEMENT_MS_TRY:
4374 ms_try_statement_to_firm(&statement->ms_try);
4376 case STATEMENT_LEAVE:
4377 leave_statement_to_firm(&statement->leave);
4380 panic("Statement not implemented\n");
4383 static int count_decls_in_expression(const expression_t *expression);
4385 static int count_local_declarations(const declaration_t * decl,
4386 const declaration_t *const end)
4389 for (; decl != end; decl = decl->next) {
4390 if(decl->namespc != NAMESPACE_NORMAL)
4392 const type_t *type = skip_typeref(decl->type);
4393 if (!decl->address_taken && is_type_scalar(type))
4395 const initializer_t *initializer = decl->init.initializer;
4396 /* FIXME: should walk initializer hierarchies... */
4397 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4398 count += count_decls_in_expression(initializer->value.value);
4404 static int count_decls_in_expression(const expression_t *expression) {
4407 if(expression == NULL)
4410 switch((expression_kind_t) expression->base.kind) {
4411 case EXPR_STATEMENT:
4412 return count_decls_in_stmts(expression->statement.statement);
4414 int count_left = count_decls_in_expression(expression->binary.left);
4415 int count_right = count_decls_in_expression(expression->binary.right);
4416 return count_left + count_right;
4419 return count_decls_in_expression(expression->unary.value);
4421 call_argument_t *argument = expression->call.arguments;
4422 for( ; argument != NULL; argument = argument->next) {
4423 count += count_decls_in_expression(argument->expression);
4430 panic("unexpected expression kind");
4432 case EXPR_COMPOUND_LITERAL:
4436 case EXPR_CONDITIONAL:
4437 count += count_decls_in_expression(expression->conditional.condition);
4438 count += count_decls_in_expression(expression->conditional.true_expression);
4439 count += count_decls_in_expression(expression->conditional.false_expression);
4442 case EXPR_BUILTIN_PREFETCH:
4443 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4444 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4445 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4448 case EXPR_BUILTIN_CONSTANT_P:
4449 count += count_decls_in_expression(expression->builtin_constant.value);
4453 count += count_decls_in_expression(expression->select.compound);
4456 case EXPR_ARRAY_ACCESS:
4457 count += count_decls_in_expression(expression->array_access.array_ref);
4458 count += count_decls_in_expression(expression->array_access.index);
4461 case EXPR_CLASSIFY_TYPE:
4462 count += count_decls_in_expression(expression->classify_type.type_expression);
4466 case EXPR_ALIGNOF: {
4467 expression_t *tp_expression = expression->typeprop.tp_expression;
4468 if (tp_expression != NULL) {
4469 count += count_decls_in_expression(tp_expression);
4475 case EXPR_REFERENCE:
4477 case EXPR_CHARACTER_CONSTANT:
4478 case EXPR_WIDE_CHARACTER_CONSTANT:
4479 case EXPR_STRING_LITERAL:
4480 case EXPR_WIDE_STRING_LITERAL:
4482 case EXPR_BUILTIN_SYMBOL:
4488 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4489 * (or implement all the missing expressions here/implement a walker)
4495 static int count_decls_in_stmts(const statement_t *stmt)
4498 for (; stmt != NULL; stmt = stmt->base.next) {
4499 switch (stmt->kind) {
4500 case STATEMENT_EMPTY:
4503 case STATEMENT_DECLARATION: {
4504 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4505 count += count_local_declarations(decl_stmt->declarations_begin,
4506 decl_stmt->declarations_end->next);
4510 case STATEMENT_COMPOUND: {
4511 const compound_statement_t *const comp =
4513 count += count_decls_in_stmts(comp->statements);
4517 case STATEMENT_IF: {
4518 const if_statement_t *const if_stmt = &stmt->ifs;
4519 count += count_decls_in_expression(if_stmt->condition);
4520 count += count_decls_in_stmts(if_stmt->true_statement);
4521 count += count_decls_in_stmts(if_stmt->false_statement);
4525 case STATEMENT_SWITCH: {
4526 const switch_statement_t *const switch_stmt = &stmt->switchs;
4527 count += count_decls_in_expression(switch_stmt->expression);
4528 count += count_decls_in_stmts(switch_stmt->body);
4532 case STATEMENT_LABEL: {
4533 const label_statement_t *const label_stmt = &stmt->label;
4534 if(label_stmt->statement != NULL) {
4535 count += count_decls_in_stmts(label_stmt->statement);
4540 case STATEMENT_WHILE: {
4541 const while_statement_t *const while_stmt = &stmt->whiles;
4542 count += count_decls_in_expression(while_stmt->condition);
4543 count += count_decls_in_stmts(while_stmt->body);
4547 case STATEMENT_DO_WHILE: {
4548 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4549 count += count_decls_in_expression(do_while_stmt->condition);
4550 count += count_decls_in_stmts(do_while_stmt->body);
4554 case STATEMENT_FOR: {
4555 const for_statement_t *const for_stmt = &stmt->fors;
4556 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4557 count += count_decls_in_expression(for_stmt->initialisation);
4558 count += count_decls_in_expression(for_stmt->condition);
4559 count += count_decls_in_expression(for_stmt->step);
4560 count += count_decls_in_stmts(for_stmt->body);
4564 case STATEMENT_CASE_LABEL: {
4565 const case_label_statement_t *label = &stmt->case_label;
4566 count += count_decls_in_expression(label->expression);
4567 if(label->statement != NULL) {
4568 count += count_decls_in_stmts(label->statement);
4574 case STATEMENT_BREAK:
4575 case STATEMENT_CONTINUE:
4578 case STATEMENT_EXPRESSION: {
4579 const expression_statement_t *expr_stmt = &stmt->expression;
4580 count += count_decls_in_expression(expr_stmt->expression);
4584 case STATEMENT_GOTO:
4585 case STATEMENT_LEAVE:
4586 case STATEMENT_INVALID:
4589 case STATEMENT_RETURN: {
4590 const return_statement_t *ret_stmt = &stmt->returns;
4591 count += count_decls_in_expression(ret_stmt->value);
4595 case STATEMENT_MS_TRY: {
4596 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4597 count += count_decls_in_stmts(try_stmt->try_statement);
4598 if(try_stmt->except_expression != NULL)
4599 count += count_decls_in_expression(try_stmt->except_expression);
4600 count += count_decls_in_stmts(try_stmt->final_statement);
4608 static int get_function_n_local_vars(declaration_t *declaration)
4612 /* count parameters */
4613 count += count_local_declarations(declaration->scope.declarations, NULL);
4615 /* count local variables declared in body */
4616 count += count_decls_in_stmts(declaration->init.statement);
4621 static void initialize_function_parameters(declaration_t *declaration)
4623 ir_graph *irg = current_ir_graph;
4624 ir_node *args = get_irg_args(irg);
4625 ir_node *start_block = get_irg_start_block(irg);
4626 ir_type *function_irtype = get_ir_type(declaration->type);
4629 declaration_t *parameter = declaration->scope.declarations;
4630 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4631 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4632 type_t *type = skip_typeref(parameter->type);
4634 bool needs_entity = parameter->address_taken;
4635 assert(!is_type_array(type));
4636 if(is_type_compound(type)) {
4637 needs_entity = true;
4641 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4642 ident *id = new_id_from_str(parameter->symbol->string);
4643 set_entity_ident(entity, id);
4645 parameter->declaration_kind
4646 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4647 parameter->v.entity = entity;
4651 ir_mode *mode = get_ir_mode(parameter->type);
4653 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4655 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4656 parameter->v.value_number = next_value_number_function;
4657 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4658 ++next_value_number_function;
4660 set_value(parameter->v.value_number, proj);
4665 * Handle additional decl modifiers for IR-graphs
4667 * @param irg the IR-graph
4668 * @param dec_modifiers additional modifiers
4670 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4672 if (decl_modifiers & DM_NORETURN) {
4673 /* TRUE if the declaration includes the Microsoft
4674 __declspec(noreturn) specifier. */
4675 set_irg_additional_property(irg, mtp_property_noreturn);
4677 if (decl_modifiers & DM_NOTHROW) {
4678 /* TRUE if the declaration includes the Microsoft
4679 __declspec(nothrow) specifier. */
4680 set_irg_additional_property(irg, mtp_property_nothrow);
4682 if (decl_modifiers & DM_NAKED) {
4683 /* TRUE if the declaration includes the Microsoft
4684 __declspec(naked) specifier. */
4685 set_irg_additional_property(irg, mtp_property_naked);
4687 if (decl_modifiers & DM_FORCEINLINE) {
4688 /* TRUE if the declaration includes the
4689 Microsoft __forceinline specifier. */
4690 set_irg_inline_property(irg, irg_inline_forced);
4692 if (decl_modifiers & DM_NOINLINE) {
4693 /* TRUE if the declaration includes the Microsoft
4694 __declspec(noinline) specifier. */
4695 set_irg_inline_property(irg, irg_inline_forbidden);
4699 static void create_function(declaration_t *declaration)
4701 ir_entity *function_entity = get_function_entity(declaration);
4703 if(declaration->init.statement == NULL)
4706 current_function_decl = declaration;
4707 current_function_name = NULL;
4708 current_funcsig = NULL;
4710 assert(imature_blocks == NULL);
4711 imature_blocks = NEW_ARR_F(ir_node*, 0);
4713 int n_local_vars = get_function_n_local_vars(declaration);
4714 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4716 set_irg_fp_model(irg, firm_opt.fp_model);
4717 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4718 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4720 ir_node *first_block = get_cur_block();
4722 /* set inline flags */
4723 if (declaration->is_inline)
4724 set_irg_inline_property(irg, irg_inline_recomended);
4725 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4727 next_value_number_function = 0;
4728 initialize_function_parameters(declaration);
4730 statement_to_firm(declaration->init.statement);
4732 ir_node *end_block = get_irg_end_block(irg);
4734 /* do we have a return statement yet? */
4735 if(get_cur_block() != NULL) {
4736 type_t *type = skip_typeref(declaration->type);
4737 assert(is_type_function(type));
4738 const function_type_t *func_type = &type->function;
4739 const type_t *return_type
4740 = skip_typeref(func_type->return_type);
4743 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4744 ret = new_Return(get_store(), 0, NULL);
4747 if(is_type_scalar(return_type)) {
4748 mode = get_ir_mode(func_type->return_type);
4754 /* ยง5.1.2.2.3 main implicitly returns 0 */
4755 if (strcmp(declaration->symbol->string, "main") == 0) {
4756 in[0] = new_Const(mode, get_mode_null(mode));
4758 in[0] = new_Unknown(mode);
4760 ret = new_Return(get_store(), 1, in);
4762 add_immBlock_pred(end_block, ret);
4765 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4766 mature_immBlock(imature_blocks[i]);
4768 DEL_ARR_F(imature_blocks);
4769 imature_blocks = NULL;
4771 mature_immBlock(first_block);
4772 mature_immBlock(end_block);
4774 irg_finalize_cons(irg);
4776 /* finalize the frame type */
4777 ir_type *frame_type = get_irg_frame_type(irg);
4778 int n = get_compound_n_members(frame_type);
4781 for(int i = 0; i < n; ++i) {
4782 ir_entity *entity = get_compound_member(frame_type, i);
4783 ir_type *entity_type = get_entity_type(entity);
4785 int align = get_type_alignment_bytes(entity_type);
4786 if(align > align_all)
4790 misalign = offset % align;
4792 offset += align - misalign;
4796 set_entity_offset(entity, offset);
4797 offset += get_type_size_bytes(entity_type);
4799 set_type_size_bytes(frame_type, offset);
4800 set_type_alignment_bytes(frame_type, align_all);
4805 static void scope_to_firm(scope_t *scope)
4807 /* first pass: create declarations */
4808 declaration_t *declaration = scope->declarations;
4809 for( ; declaration != NULL; declaration = declaration->next) {
4810 if(declaration->namespc != NAMESPACE_NORMAL)
4812 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4813 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4815 if(declaration->symbol == NULL)
4818 type_t *type = skip_typeref(declaration->type);
4819 if(is_type_function(type)) {
4820 get_function_entity(declaration);
4822 create_global_variable(declaration);
4826 /* second pass: create code/initializers */
4827 declaration = scope->declarations;
4828 for( ; declaration != NULL; declaration = declaration->next) {
4829 if(declaration->namespc != NAMESPACE_NORMAL)
4831 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4832 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4834 if(declaration->symbol == NULL)
4837 type_t *type = declaration->type;
4838 if(type->kind == TYPE_FUNCTION) {
4839 create_function(declaration);
4841 assert(declaration->declaration_kind
4842 == DECLARATION_KIND_GLOBAL_VARIABLE);
4843 current_ir_graph = get_const_code_irg();
4844 create_declaration_initializer(declaration);
4849 void init_ast2firm(void)
4851 obstack_init(&asm_obst);
4852 init_atomic_modes();
4854 id_underscore = new_id_from_chars("_", 1);
4855 id_imp = new_id_from_chars("__imp_", 6);
4857 /* OS option must be set to the backend */
4858 const char *s = "ia32-gasmode=linux";
4859 switch (firm_opt.os_support) {
4860 case OS_SUPPORT_WIN32:
4861 create_ld_ident = create_ld_ident_win32;
4862 s = "ia32-gasmode=mingw";
4864 case OS_SUPPORT_LINUX:
4865 create_ld_ident = create_ld_ident_linux_elf;
4866 s = "ia32-gasmode=linux"; break;
4868 case OS_SUPPORT_MACHO:
4869 create_ld_ident = create_ld_ident_macho;
4870 s = "ia32-gasmode=macho"; break;
4875 /* create idents for all known runtime functions */
4876 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4877 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4881 static void init_ir_types(void)
4883 static int ir_types_initialized = 0;
4884 if(ir_types_initialized)
4886 ir_types_initialized = 1;
4888 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4889 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4890 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4892 ir_type_int = get_ir_type(type_int);
4893 ir_type_const_char = get_ir_type(type_const_char);
4894 ir_type_wchar_t = get_ir_type(type_wchar_t);
4895 ir_type_void = get_ir_type(type_void);
4898 void exit_ast2firm(void)
4900 obstack_free(&asm_obst, NULL);
4903 void translation_unit_to_firm(translation_unit_t *unit)
4905 /* just to be sure */
4906 continue_label = NULL;
4908 current_switch_cond = NULL;
4912 scope_to_firm(&unit->scope);