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->is_inline) {
973 set_entity_visibility(entity, visibility_local);
974 } else if(declaration->init.statement != NULL) {
975 set_entity_visibility(entity, visibility_external_visible);
977 set_entity_visibility(entity, visibility_external_allocated);
979 /* We should check for file scope here, but as long as we compile C only
980 this is not needed. */
981 int n_params = get_method_n_params(ir_type_method);
982 int n_res = get_method_n_ress(ir_type_method);
985 if (n_params == 0 && n_res == 0 && id == predef_idents[rts_abort]) {
986 /* found abort(), store for later */
990 if (! firm_opt.freestanding) {
991 /* check for a known runtime function */
992 for (i = 0; i < rts_max; ++i) {
993 /* ignore those rts functions not necessary needed for current mode */
994 if ((c_mode & rts_data[i].flags) == 0)
996 if (n_params == rts_data[i].n_params && n_res == rts_data[i].n_res &&
997 id == predef_idents[rts_data[i].id])
998 rts_entities[rts_data[i].id] = entity;
1003 set_entity_allocation(entity, allocation_static);
1005 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
1006 declaration->v.entity = entity;
1011 static ir_node *const_to_firm(const const_expression_t *cnst)
1013 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1014 ir_mode *mode = get_ir_mode(cnst->base.type);
1019 if(mode_is_float(mode)) {
1020 tv = new_tarval_from_double(cnst->v.float_value, mode);
1022 if(mode_is_signed(mode)) {
1023 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1025 len = snprintf(buf, sizeof(buf), "%llu",
1026 (unsigned long long) cnst->v.int_value);
1028 tv = new_tarval_from_str(buf, len, mode);
1031 return new_d_Const(dbgi, mode, tv);
1034 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1036 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1037 ir_mode *mode = get_ir_mode(cnst->base.type);
1039 long long int v = 0;
1040 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1041 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1044 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1045 tarval *tv = new_tarval_from_str(buf, len, mode);
1047 return new_d_Const(dbgi, mode, tv);
1050 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1052 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1053 ir_mode *mode = get_ir_mode(cnst->base.type);
1055 long long int v = cnst->v.wide_character.begin[0];
1058 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1059 tarval *tv = new_tarval_from_str(buf, len, mode);
1061 return new_d_Const(dbgi, mode, tv);
1064 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1067 assert(entity != NULL);
1068 union symconst_symbol sym;
1069 sym.entity_p = entity;
1070 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1073 static ir_node *string_to_firm(const source_position_t *const src_pos,
1074 const char *const id_prefix,
1075 const string_t *const value)
1077 ir_type *const global_type = get_glob_type();
1078 dbg_info *const dbgi = get_dbg_info(src_pos);
1079 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1080 ir_type_const_char, dbgi);
1082 ident *const id = id_unique(id_prefix);
1083 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1084 set_entity_ld_ident(entity, id);
1085 set_entity_variability(entity, variability_constant);
1086 set_entity_allocation(entity, allocation_static);
1088 ir_type *const elem_type = ir_type_const_char;
1089 ir_mode *const mode = get_type_mode(elem_type);
1091 const char* const string = value->begin;
1092 const size_t slen = value->size;
1094 set_array_lower_bound_int(type, 0, 0);
1095 set_array_upper_bound_int(type, 0, slen);
1096 set_type_size_bytes(type, slen);
1097 set_type_state(type, layout_fixed);
1099 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1100 for(size_t i = 0; i < slen; ++i) {
1101 tvs[i] = new_tarval_from_long(string[i], mode);
1104 set_array_entity_values(entity, tvs, slen);
1107 return create_symconst(dbgi, mode_P_data, entity);
1110 static ir_node *string_literal_to_firm(
1111 const string_literal_expression_t* literal)
1113 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1117 static ir_node *wide_string_literal_to_firm(
1118 const wide_string_literal_expression_t* const literal)
1120 ir_type *const global_type = get_glob_type();
1121 ir_type *const elem_type = ir_type_wchar_t;
1122 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1123 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1126 ident *const id = id_unique("Lstr.%u");
1127 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1128 set_entity_ld_ident(entity, id);
1129 set_entity_variability(entity, variability_constant);
1130 set_entity_allocation(entity, allocation_static);
1132 ir_mode *const mode = get_type_mode(elem_type);
1134 const wchar_rep_t *const string = literal->value.begin;
1135 const size_t slen = literal->value.size;
1137 set_array_lower_bound_int(type, 0, 0);
1138 set_array_upper_bound_int(type, 0, slen);
1139 set_type_size_bytes(type, slen);
1140 set_type_state(type, layout_fixed);
1142 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1143 for(size_t i = 0; i < slen; ++i) {
1144 tvs[i] = new_tarval_from_long(string[i], mode);
1147 set_array_entity_values(entity, tvs, slen);
1150 return create_symconst(dbgi, mode_P_data, entity);
1153 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1154 dbg_info *const dbgi)
1156 ir_type *irtype = get_ir_type(type);
1157 if (is_compound_type(irtype)
1158 || is_Method_type(irtype)
1159 || is_Array_type(irtype)) {
1163 ir_mode *const mode = get_type_mode(irtype);
1164 ir_node *const memory = get_store();
1165 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1166 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1167 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1169 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1170 set_Load_volatility(load, volatility_is_volatile);
1173 set_store(load_mem);
1177 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1179 ir_mode *mode = get_irn_mode(node);
1181 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1183 if(!mode_is_float(mode))
1186 /* check if there is already a Conv */
1187 if (get_irn_op(node) == op_Conv) {
1188 /* convert it into a strict Conv */
1189 set_Conv_strict(node, 1);
1193 /* otherwise create a new one */
1194 return new_d_strictConv(dbgi, node, mode);
1197 static ir_node *get_global_var_address(dbg_info *const dbgi,
1198 const declaration_t *const decl)
1200 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1202 ir_entity *const entity = decl->v.entity;
1203 switch ((storage_class_tag_t)decl->storage_class) {
1204 case STORAGE_CLASS_THREAD:
1205 case STORAGE_CLASS_THREAD_EXTERN:
1206 case STORAGE_CLASS_THREAD_STATIC: {
1207 ir_node *const no_mem = new_NoMem();
1208 ir_node *const tls = get_irg_tls(current_ir_graph);
1209 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1213 return create_symconst(dbgi, mode_P_data, entity);
1217 /* Returns the correct base address depending on whether it is a parameter or a
1218 * normal local variable */
1219 static ir_node *get_local_frame(ir_entity *const ent)
1221 ir_graph *const irg = current_ir_graph;
1222 const ir_type *const owner = get_entity_owner(ent);
1223 if (owner == get_irg_frame_type(irg)) {
1224 return get_irg_frame(irg);
1226 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1227 return get_irg_value_param_base(irg);
1231 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1233 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1234 declaration_t *declaration = ref->declaration;
1235 type_t *type = skip_typeref(declaration->type);
1237 switch((declaration_kind_t) declaration->declaration_kind) {
1238 case DECLARATION_KIND_UNKNOWN:
1239 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1245 case DECLARATION_KIND_ENUM_ENTRY: {
1246 ir_mode *const mode = get_ir_mode(type);
1247 return new_Const(mode, declaration->v.enum_val);
1250 case DECLARATION_KIND_LOCAL_VARIABLE: {
1251 ir_mode *const mode = get_ir_mode(type);
1252 return get_value(declaration->v.value_number, mode);
1254 case DECLARATION_KIND_FUNCTION: {
1255 ir_mode *const mode = get_ir_mode(type);
1256 return create_symconst(dbgi, mode, declaration->v.entity);
1258 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1259 ir_node *const addr = get_global_var_address(dbgi, declaration);
1260 return deref_address(declaration->type, addr, dbgi);
1263 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1264 ir_entity *entity = declaration->v.entity;
1265 ir_node *frame = get_local_frame(entity);
1266 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1267 return deref_address(declaration->type, sel, dbgi);
1270 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1271 return declaration->v.vla_base;
1273 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1274 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1275 case DECLARATION_KIND_COMPOUND_MEMBER:
1276 case DECLARATION_KIND_LABEL_BLOCK:
1277 panic("not implemented reference type");
1280 panic("reference to declaration with unknown type found");
1283 static ir_node *reference_addr(const reference_expression_t *ref)
1285 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1286 declaration_t *declaration = ref->declaration;
1288 switch((declaration_kind_t) declaration->declaration_kind) {
1289 case DECLARATION_KIND_UNKNOWN:
1291 case DECLARATION_KIND_LOCAL_VARIABLE:
1292 panic("local variable without entity has no address");
1293 case DECLARATION_KIND_FUNCTION: {
1294 type_t *const type = skip_typeref(ref->base.type);
1295 ir_mode *const mode = get_ir_mode(type);
1296 return create_symconst(dbgi, mode, declaration->v.entity);
1298 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1299 ir_node *const addr = get_global_var_address(dbgi, declaration);
1302 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1303 ir_entity *entity = declaration->v.entity;
1304 ir_node *frame = get_local_frame(entity);
1305 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1310 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1311 return declaration->v.vla_base;
1313 case DECLARATION_KIND_ENUM_ENTRY:
1314 panic("trying to reference enum entry");
1316 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1317 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1318 case DECLARATION_KIND_COMPOUND_MEMBER:
1319 case DECLARATION_KIND_LABEL_BLOCK:
1320 panic("not implemented reference type");
1323 panic("reference to declaration with unknown type found");
1326 static ir_node *process_builtin_call(const call_expression_t *call)
1328 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1330 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1331 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1333 type_t *type = skip_typeref(builtin->base.type);
1334 assert(is_type_pointer(type));
1336 type_t *function_type = skip_typeref(type->pointer.points_to);
1337 symbol_t *symbol = builtin->symbol;
1339 switch(symbol->ID) {
1340 case T___builtin_alloca: {
1341 if(call->arguments == NULL || call->arguments->next != NULL) {
1342 panic("invalid number of parameters on __builtin_alloca");
1344 expression_t *argument = call->arguments->expression;
1345 ir_node *size = expression_to_firm(argument);
1347 ir_node *store = get_store();
1348 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1350 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1352 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1356 case T___builtin_nan:
1357 case T___builtin_nanf:
1358 case T___builtin_nand: {
1359 /* Ignore string for now... */
1360 assert(is_type_function(function_type));
1361 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1362 tarval *tv = get_mode_NAN(mode);
1363 ir_node *res = new_d_Const(dbgi, mode, tv);
1366 case T___builtin_va_end:
1369 panic("Unsupported builtin found\n");
1373 static ir_node *call_expression_to_firm(const call_expression_t *call)
1375 assert(get_cur_block() != NULL);
1377 expression_t *function = call->function;
1378 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1379 return process_builtin_call(call);
1381 ir_node *callee = expression_to_firm(function);
1383 type_t *type = skip_typeref(function->base.type);
1384 assert(is_type_pointer(type));
1385 pointer_type_t *pointer_type = &type->pointer;
1386 type_t *points_to = skip_typeref(pointer_type->points_to);
1387 assert(is_type_function(points_to));
1388 function_type_t *function_type = &points_to->function;
1390 int n_parameters = 0;
1391 call_argument_t *argument = call->arguments;
1392 for( ; argument != NULL; argument = argument->next) {
1396 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1398 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1399 ir_type *new_method_type = NULL;
1400 if(function_type->variadic || function_type->unspecified_parameters) {
1401 /* we need to construct a new method type matching the call
1403 int n_res = get_method_n_ress(ir_method_type);
1404 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1405 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1406 n_parameters, n_res, dbgi);
1407 set_method_calling_convention(new_method_type,
1408 get_method_calling_convention(ir_method_type));
1409 set_method_additional_properties(new_method_type,
1410 get_method_additional_properties(ir_method_type));
1411 set_method_variadicity(new_method_type,
1412 get_method_variadicity(ir_method_type));
1414 for(int i = 0; i < n_res; ++i) {
1415 set_method_res_type(new_method_type, i,
1416 get_method_res_type(ir_method_type, i));
1419 ir_node *in[n_parameters];
1421 argument = call->arguments;
1423 for( ; argument != NULL; argument = argument->next) {
1424 expression_t *expression = argument->expression;
1425 ir_node *arg_node = expression_to_firm(expression);
1427 arg_node = do_strict_conv(dbgi, arg_node);
1430 if(new_method_type != NULL) {
1431 ir_type *irtype = get_ir_type(expression->base.type);
1432 set_method_param_type(new_method_type, n, irtype);
1437 assert(n == n_parameters);
1439 if(new_method_type != NULL)
1440 ir_method_type = new_method_type;
1442 ir_node *store = get_store();
1443 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1445 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1448 type_t *return_type = skip_typeref(function_type->return_type);
1449 ir_node *result = NULL;
1451 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1453 if(is_type_scalar(return_type)) {
1454 mode = get_ir_mode(return_type);
1458 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1459 result = new_d_Proj(dbgi, resproj, mode, 0);
1465 static void statement_to_firm(statement_t *statement);
1466 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1468 static ir_node *expression_to_addr(const expression_t *expression);
1469 static void create_condition_evaluation(const expression_t *expression,
1470 ir_node *true_block,
1471 ir_node *false_block);
1473 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1476 value = do_strict_conv(dbgi, value);
1478 ir_node *memory = get_store();
1480 if(is_type_scalar(type)) {
1481 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1482 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1483 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1484 set_Store_volatility(store, volatility_is_volatile);
1485 set_store(store_mem);
1487 ir_type *irtype = get_ir_type(type);
1488 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1489 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1490 set_store(copyb_mem);
1494 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1496 tarval *all_one = get_mode_all_one(mode);
1497 int mode_size = get_mode_size_bits(mode);
1499 assert(offset >= 0 && size >= 0);
1500 assert(offset + size <= mode_size);
1501 if(size == mode_size) {
1505 long shiftr = get_mode_size_bits(mode) - size;
1506 long shiftl = offset;
1507 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1508 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1509 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1510 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1515 static void bitfield_store_to_firm(const unary_expression_t *expression,
1518 expression_t *select = expression->value;
1519 assert(select->kind == EXPR_SELECT);
1520 type_t *type = select->base.type;
1521 assert(type->kind == TYPE_BITFIELD);
1522 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1523 ir_node *addr = expression_to_addr(select);
1525 assert(get_irn_mode(value) == mode);
1527 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1529 /* kill upper bits of value and shift to right position */
1530 ir_entity *entity = select->select.compound_entry->v.entity;
1531 int bitoffset = get_entity_offset_bits_remainder(entity);
1532 ir_type *entity_type = get_entity_type(entity);
1533 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1535 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1536 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1537 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1538 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1539 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1540 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1542 /* load current value */
1543 ir_node *mem = get_store();
1544 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1545 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1546 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1547 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1548 tarval *inv_mask = tarval_not(shift_mask);
1549 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1550 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1552 /* construct new value and store */
1553 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1554 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1555 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1556 set_store(store_mem);
1558 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1559 set_Load_volatility(load, volatility_is_volatile);
1560 set_Store_volatility(store, volatility_is_volatile);
1564 static void set_value_for_expression(const expression_t *expression,
1567 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1568 value = do_strict_conv(dbgi, value);
1570 if(expression->kind == EXPR_REFERENCE) {
1571 const reference_expression_t *ref = &expression->reference;
1573 declaration_t *declaration = ref->declaration;
1574 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1575 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1576 set_value(declaration->v.value_number, value);
1581 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1582 bitfield_store_to_firm(&expression->unary, value);
1586 ir_node *addr = expression_to_addr(expression);
1587 type_t *type = skip_typeref(expression->base.type);
1588 assign_value(dbgi, addr, type, value);
1591 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1593 ir_mode *value_mode = get_irn_mode(value);
1595 if (value_mode == dest_mode || is_Bad(value))
1598 if(dest_mode == mode_b) {
1599 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1600 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1601 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1605 return new_d_Conv(dbgi, value, dest_mode);
1608 static ir_node *create_incdec(const unary_expression_t *expression)
1610 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1611 type_t *type = skip_typeref(expression->base.type);
1612 ir_mode *mode = get_ir_mode(type);
1613 expression_t *value = expression->value;
1615 ir_node *value_node = expression_to_firm(value);
1618 if(is_type_pointer(type)) {
1619 pointer_type_t *pointer_type = &type->pointer;
1620 offset = get_type_size(pointer_type->points_to);
1622 assert(is_type_arithmetic(type));
1623 offset = new_Const(mode, get_mode_one(mode));
1626 switch(expression->base.kind) {
1627 case EXPR_UNARY_POSTFIX_INCREMENT: {
1628 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1629 set_value_for_expression(value, new_value);
1632 case EXPR_UNARY_POSTFIX_DECREMENT: {
1633 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1634 set_value_for_expression(value, new_value);
1637 case EXPR_UNARY_PREFIX_INCREMENT: {
1638 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1639 set_value_for_expression(value, new_value);
1642 case EXPR_UNARY_PREFIX_DECREMENT: {
1643 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1644 set_value_for_expression(value, new_value);
1648 panic("no incdec expr in create_incdec");
1653 static bool is_local_variable(expression_t *expression)
1655 if (expression->kind != EXPR_REFERENCE)
1657 reference_expression_t *ref_expr = &expression->reference;
1658 declaration_t *declaration = ref_expr->declaration;
1659 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1662 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1665 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1666 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1667 case EXPR_BINARY_NOTEQUAL:
1668 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1669 case EXPR_BINARY_ISLESS:
1670 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1671 case EXPR_BINARY_ISLESSEQUAL:
1672 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1673 case EXPR_BINARY_ISGREATER:
1674 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1675 case EXPR_BINARY_ISGREATEREQUAL:
1676 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1677 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1682 panic("trying to get pn_Cmp from non-comparison binexpr type");
1686 * Handle the assume optimizer hint: check if a Confirm
1687 * node can be created.
1689 * @param dbi debug info
1690 * @param expr the IL assume expression
1692 * we support here only some simple cases:
1697 static ir_node *handle_assume_compare(dbg_info *dbi,
1698 const binary_expression_t *expression)
1700 expression_t *op1 = expression->left;
1701 expression_t *op2 = expression->right;
1702 declaration_t *var2, *var = NULL;
1703 ir_node *res = NULL;
1706 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1708 if (is_local_variable(op1) && is_local_variable(op2)) {
1709 var = op1->reference.declaration;
1710 var2 = op2->reference.declaration;
1712 type_t *const type = skip_typeref(var->type);
1713 ir_mode *const mode = get_ir_mode(type);
1715 ir_node *const irn1 = get_value(var->v.value_number, mode);
1716 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1718 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1719 set_value(var2->v.value_number, res);
1721 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1722 set_value(var->v.value_number, res);
1728 if (is_local_variable(op1) && is_constant_expression(op2)) {
1729 var = op1->reference.declaration;
1731 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1732 cmp_val = get_inversed_pnc(cmp_val);
1733 var = op2->reference.declaration;
1738 type_t *const type = skip_typeref(var->type);
1739 ir_mode *const mode = get_ir_mode(type);
1741 res = get_value(var->v.value_number, mode);
1742 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1743 set_value(var->v.value_number, res);
1749 * Handle the assume optimizer hint.
1751 * @param dbi debug info
1752 * @param expr the IL assume expression
1754 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1755 switch(expression->kind) {
1756 case EXPR_BINARY_EQUAL:
1757 case EXPR_BINARY_NOTEQUAL:
1758 case EXPR_BINARY_LESS:
1759 case EXPR_BINARY_LESSEQUAL:
1760 case EXPR_BINARY_GREATER:
1761 case EXPR_BINARY_GREATEREQUAL:
1762 return handle_assume_compare(dbi, &expression->binary);
1768 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1770 expression_t *select = expression->value;
1771 assert(select->kind == EXPR_SELECT);
1773 type_t *type = select->base.type;
1774 assert(type->kind == TYPE_BITFIELD);
1775 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1776 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1777 ir_node *addr = expression_to_addr(select);
1778 ir_node *mem = get_store();
1779 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1780 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1781 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1783 load_res = create_conv(dbgi, load_res, mode_int);
1785 set_store(load_mem);
1787 /* kill upper bits */
1788 ir_entity *entity = select->select.compound_entry->v.entity;
1789 int bitoffset = get_entity_offset_bits_remainder(entity);
1790 ir_type *entity_type = get_entity_type(entity);
1791 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1792 long shift_bitsl = machine_size - bitoffset - bitsize;
1793 assert(shift_bitsl >= 0);
1794 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1795 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1796 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1798 long shift_bitsr = bitoffset + shift_bitsl;
1799 assert(shift_bitsr <= (long) machine_size);
1800 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1801 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1803 if(mode_is_signed(mode)) {
1804 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1806 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1809 return create_conv(dbgi, shiftr, mode);
1812 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1814 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1815 type_t *type = skip_typeref(expression->base.type);
1817 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1818 return expression_to_addr(expression->value);
1820 const expression_t *value = expression->value;
1822 switch(expression->base.kind) {
1823 case EXPR_UNARY_NEGATE: {
1824 ir_node *value_node = expression_to_firm(value);
1825 ir_mode *mode = get_ir_mode(type);
1826 return new_d_Minus(dbgi, value_node, mode);
1828 case EXPR_UNARY_PLUS:
1829 return expression_to_firm(value);
1830 case EXPR_UNARY_BITWISE_NEGATE: {
1831 ir_node *value_node = expression_to_firm(value);
1832 ir_mode *mode = get_ir_mode(type);
1833 return new_d_Not(dbgi, value_node, mode);
1835 case EXPR_UNARY_NOT: {
1836 ir_node *value_node = expression_to_firm(value);
1837 ir_mode *mode = get_ir_mode(type);
1838 if(get_irn_mode(value_node) != mode_b) {
1839 value_node = create_conv(dbgi, value_node, mode_b);
1841 value_node = new_d_Not(dbgi, value_node, mode_b);
1842 if(mode != mode_b) {
1843 value_node = create_conv(dbgi, value_node, mode);
1847 case EXPR_UNARY_DEREFERENCE: {
1848 ir_node *value_node = expression_to_firm(value);
1849 type_t *value_type = skip_typeref(value->base.type);
1850 assert(is_type_pointer(value_type));
1851 type_t *points_to = value_type->pointer.points_to;
1852 return deref_address(points_to, value_node, dbgi);
1854 case EXPR_UNARY_POSTFIX_INCREMENT:
1855 case EXPR_UNARY_POSTFIX_DECREMENT:
1856 case EXPR_UNARY_PREFIX_INCREMENT:
1857 case EXPR_UNARY_PREFIX_DECREMENT:
1858 return create_incdec(expression);
1859 case EXPR_UNARY_CAST: {
1860 ir_node *value_node = expression_to_firm(value);
1861 if(is_type_scalar(type)) {
1862 ir_mode *mode = get_ir_mode(type);
1863 ir_node *node = create_conv(dbgi, value_node, mode);
1864 node = do_strict_conv(dbgi, node);
1867 /* make sure firm type is constructed */
1868 (void) get_ir_type(type);
1872 case EXPR_UNARY_CAST_IMPLICIT: {
1873 ir_node *value_node = expression_to_firm(value);
1874 if(is_type_scalar(type)) {
1875 ir_mode *mode = get_ir_mode(type);
1876 return create_conv(dbgi, value_node, mode);
1881 case EXPR_UNARY_ASSUME:
1882 if(firm_opt.confirm)
1883 return handle_assume(dbgi, value);
1886 case EXPR_UNARY_BITFIELD_EXTRACT:
1887 return bitfield_extract_to_firm(expression);
1892 panic("invalid UNEXPR type found");
1895 static ir_node *produce_condition_result(const expression_t *expression,
1898 ir_mode *mode = get_ir_mode(expression->base.type);
1899 ir_node *cur_block = get_cur_block();
1901 ir_node *one_block = new_immBlock();
1902 ir_node *one = new_Const(mode, get_mode_one(mode));
1903 ir_node *jmp_one = new_d_Jmp(dbgi);
1905 ir_node *zero_block = new_immBlock();
1906 ir_node *zero = new_Const(mode, get_mode_null(mode));
1907 ir_node *jmp_zero = new_d_Jmp(dbgi);
1909 set_cur_block(cur_block);
1910 create_condition_evaluation(expression, one_block, zero_block);
1911 mature_immBlock(one_block);
1912 mature_immBlock(zero_block);
1914 ir_node *common_block = new_immBlock();
1915 add_immBlock_pred(common_block, jmp_one);
1916 add_immBlock_pred(common_block, jmp_zero);
1917 mature_immBlock(common_block);
1919 ir_node *in[2] = { one, zero };
1920 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1925 static ir_node *create_lazy_op(const binary_expression_t *expression)
1927 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1928 type_t *type = expression->base.type;
1929 ir_mode *mode = get_ir_mode(type);
1931 if(is_constant_expression(expression->left)) {
1932 long val = fold_constant(expression->left);
1933 expression_kind_t ekind = expression->base.kind;
1934 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1935 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1936 return expression_to_firm(expression->right);
1938 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1939 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1940 return new_Const(mode, get_mode_one(mode));
1944 return produce_condition_result((const expression_t*) expression, dbgi);
1947 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1948 ir_node *right, ir_mode *mode);
1950 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1951 create_arithmetic_func func)
1953 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1954 ir_node *left = expression_to_firm(expression->left);
1955 ir_node *right = expression_to_firm(expression->right);
1956 type_t *type = expression->right->base.type;
1957 /* be careful with the modes, because in arithmetic assign nodes only
1958 * the right operand has the mode of the arithmetic already */
1959 ir_mode *mode = get_ir_mode(type);
1960 left = create_conv(dbgi, left, mode);
1961 ir_node *res = func(dbgi, left, right, mode);
1966 static ir_node *pointer_arithmetic(ir_node *const pointer,
1969 dbg_info *const dbgi,
1970 const create_arithmetic_func func)
1972 pointer_type_t *const pointer_type = &type->pointer;
1973 type_t *const points_to = pointer_type->points_to;
1974 const unsigned elem_size = get_type_size_const(points_to);
1976 assert(elem_size >= 1);
1977 if (elem_size > 1) {
1978 integer = create_conv(dbgi, integer, mode_int);
1979 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1980 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1984 ir_mode *const mode = get_ir_mode(type);
1985 return func(dbgi, pointer, integer, mode);
1988 static ir_node *create_arithmetic_assign_binop(
1989 const binary_expression_t *expression, create_arithmetic_func func)
1991 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
1992 type_t *const type = skip_typeref(expression->base.type);
1995 if (is_type_pointer(type)) {
1996 ir_node *const pointer = expression_to_firm(expression->left);
1997 ir_node * integer = expression_to_firm(expression->right);
1998 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2000 value = create_arithmetic_binop(expression, func);
2003 ir_mode *const mode = get_ir_mode(type);
2004 value = create_conv(dbgi, value, mode);
2005 set_value_for_expression(expression->left, value);
2010 static ir_node *create_add(const binary_expression_t *expression)
2012 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2013 ir_node *left = expression_to_firm(expression->left);
2014 ir_node *right = expression_to_firm(expression->right);
2015 type_t *type = expression->base.type;
2017 expression_t *expr_left = expression->left;
2018 expression_t *expr_right = expression->right;
2019 type_t *type_left = skip_typeref(expr_left->base.type);
2020 type_t *type_right = skip_typeref(expr_right->base.type);
2022 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2023 ir_mode *const mode = get_ir_mode(type);
2024 return new_d_Add(dbgi, left, right, mode);
2027 if (is_type_pointer(type_left)) {
2028 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2030 assert(is_type_pointer(type_right));
2031 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2035 static ir_node *create_sub(const binary_expression_t *expression)
2037 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2038 expression_t *const expr_left = expression->left;
2039 expression_t *const expr_right = expression->right;
2040 ir_node *const left = expression_to_firm(expr_left);
2041 ir_node *const right = expression_to_firm(expr_right);
2042 type_t *const type = expression->base.type;
2043 type_t *const type_left = skip_typeref(expr_left->base.type);
2044 type_t *const type_right = skip_typeref(expr_right->base.type);
2046 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2047 ir_mode *const mode = get_ir_mode(type);
2048 return new_d_Sub(dbgi, left, right, mode);
2049 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2050 const pointer_type_t *const ptr_type = &type_left->pointer;
2052 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2053 ir_mode *const mode = get_ir_mode(type);
2054 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2055 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2056 ir_node *const no_mem = new_NoMem();
2057 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2058 op_pin_state_floats);
2059 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2062 assert(is_type_pointer(type_left));
2063 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2066 static ir_node *create_shift(const binary_expression_t *expression)
2068 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2069 ir_node *left = expression_to_firm(expression->left);
2070 ir_node *right = expression_to_firm(expression->right);
2071 type_t *type = expression->base.type;
2072 ir_mode *mode = get_ir_mode(type);
2074 /* firm always wants the shift count to be unsigned */
2075 right = create_conv(dbgi, right, mode_uint);
2079 switch(expression->base.kind) {
2080 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2081 case EXPR_BINARY_SHIFTLEFT:
2082 res = new_d_Shl(dbgi, left, right, mode);
2084 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2085 case EXPR_BINARY_SHIFTRIGHT: {
2086 expression_t *expr_left = expression->left;
2087 type_t *type_left = skip_typeref(expr_left->base.type);
2089 if(is_type_signed(type_left)) {
2090 res = new_d_Shrs(dbgi, left, right, mode);
2092 res = new_d_Shr(dbgi, left, right, mode);
2097 panic("create shift op called for non-shift op");
2104 static ir_node *create_divmod(const binary_expression_t *expression)
2106 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2107 ir_node *left = expression_to_firm(expression->left);
2108 ir_node *right = expression_to_firm(expression->right);
2109 ir_node *pin = new_Pin(new_NoMem());
2110 /* be careful with the modes, because in arithmetic assign nodes only
2111 * the right operand has the mode of the arithmetic already */
2112 type_t *type = expression->right->base.type;
2113 ir_mode *mode = get_ir_mode(type);
2114 left = create_conv(dbgi, left, mode);
2118 switch (expression->base.kind) {
2119 case EXPR_BINARY_DIV:
2120 case EXPR_BINARY_DIV_ASSIGN:
2121 if(mode_is_float(mode)) {
2122 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2123 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2125 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2126 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2130 case EXPR_BINARY_MOD:
2131 case EXPR_BINARY_MOD_ASSIGN:
2132 assert(!mode_is_float(mode));
2133 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2134 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2137 default: panic("unexpected binary expression type in create_divmod()");
2143 static ir_node *create_arithmetic_assign_divmod(
2144 const binary_expression_t *expression)
2146 ir_node * value = create_divmod(expression);
2147 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2148 type_t *const type = expression->base.type;
2149 ir_mode *const mode = get_ir_mode(type);
2151 assert(type->kind != TYPE_POINTER);
2153 value = create_conv(dbgi, value, mode);
2154 set_value_for_expression(expression->left, value);
2159 static ir_node *create_arithmetic_assign_shift(
2160 const binary_expression_t *expression)
2162 ir_node * value = create_shift(expression);
2163 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2164 type_t *const type = expression->base.type;
2165 ir_mode *const mode = get_ir_mode(type);
2167 value = create_conv(dbgi, value, mode);
2168 set_value_for_expression(expression->left, value);
2173 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2175 expression_kind_t kind = expression->base.kind;
2178 case EXPR_BINARY_EQUAL:
2179 case EXPR_BINARY_NOTEQUAL:
2180 case EXPR_BINARY_LESS:
2181 case EXPR_BINARY_LESSEQUAL:
2182 case EXPR_BINARY_GREATER:
2183 case EXPR_BINARY_GREATEREQUAL:
2184 case EXPR_BINARY_ISGREATER:
2185 case EXPR_BINARY_ISGREATEREQUAL:
2186 case EXPR_BINARY_ISLESS:
2187 case EXPR_BINARY_ISLESSEQUAL:
2188 case EXPR_BINARY_ISLESSGREATER:
2189 case EXPR_BINARY_ISUNORDERED: {
2190 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2191 ir_node *left = expression_to_firm(expression->left);
2192 ir_node *right = expression_to_firm(expression->right);
2193 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2194 long pnc = get_pnc(kind, expression->left->base.type);
2195 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2198 case EXPR_BINARY_ASSIGN: {
2199 ir_node *right = expression_to_firm(expression->right);
2200 set_value_for_expression(expression->left, right);
2204 case EXPR_BINARY_ADD:
2205 return create_add(expression);
2206 case EXPR_BINARY_SUB:
2207 return create_sub(expression);
2208 case EXPR_BINARY_MUL:
2209 return create_arithmetic_binop(expression, new_d_Mul);
2210 case EXPR_BINARY_BITWISE_AND:
2211 return create_arithmetic_binop(expression, new_d_And);
2212 case EXPR_BINARY_BITWISE_OR:
2213 return create_arithmetic_binop(expression, new_d_Or);
2214 case EXPR_BINARY_BITWISE_XOR:
2215 return create_arithmetic_binop(expression, new_d_Eor);
2216 case EXPR_BINARY_SHIFTLEFT:
2217 case EXPR_BINARY_SHIFTRIGHT:
2218 return create_shift(expression);
2219 case EXPR_BINARY_DIV:
2220 case EXPR_BINARY_MOD:
2221 return create_divmod(expression);
2222 case EXPR_BINARY_LOGICAL_AND:
2223 case EXPR_BINARY_LOGICAL_OR:
2224 return create_lazy_op(expression);
2225 case EXPR_BINARY_COMMA:
2226 expression_to_firm(expression->left);
2227 return expression_to_firm(expression->right);
2228 case EXPR_BINARY_ADD_ASSIGN:
2229 return create_arithmetic_assign_binop(expression, new_d_Add);
2230 case EXPR_BINARY_SUB_ASSIGN:
2231 return create_arithmetic_assign_binop(expression, new_d_Sub);
2232 case EXPR_BINARY_MUL_ASSIGN:
2233 return create_arithmetic_assign_binop(expression, new_d_Mul);
2234 case EXPR_BINARY_MOD_ASSIGN:
2235 case EXPR_BINARY_DIV_ASSIGN:
2236 return create_arithmetic_assign_divmod(expression);
2237 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2238 return create_arithmetic_assign_binop(expression, new_d_And);
2239 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2240 return create_arithmetic_assign_binop(expression, new_d_Or);
2241 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2242 return create_arithmetic_assign_binop(expression, new_d_Eor);
2243 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2244 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2245 return create_arithmetic_assign_shift(expression);
2246 case EXPR_BINARY_BUILTIN_EXPECT:
2247 return expression_to_firm(expression->left);
2249 panic("TODO binexpr type");
2253 static ir_node *array_access_addr(const array_access_expression_t *expression)
2255 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2256 ir_node *base_addr = expression_to_firm(expression->array_ref);
2257 ir_node *offset = expression_to_firm(expression->index);
2258 offset = create_conv(dbgi, offset, mode_uint);
2260 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2261 assert(is_type_pointer(ref_type));
2262 pointer_type_t *pointer_type = &ref_type->pointer;
2264 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2265 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2267 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2272 static ir_node *array_access_to_firm(
2273 const array_access_expression_t *expression)
2275 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2276 ir_node *addr = array_access_addr(expression);
2277 type_t *type = revert_automatic_type_conversion(
2278 (const expression_t*) expression);
2279 type = skip_typeref(type);
2281 return deref_address(type, addr, dbgi);
2284 static long get_offsetof_offset(const offsetof_expression_t *expression)
2286 type_t *orig_type = expression->type;
2289 designator_t *designator = expression->designator;
2290 for( ; designator != NULL; designator = designator->next) {
2291 type_t *type = skip_typeref(orig_type);
2292 /* be sure the type is constructed */
2293 (void) get_ir_type(type);
2295 if(designator->symbol != NULL) {
2296 assert(is_type_compound(type));
2297 symbol_t *symbol = designator->symbol;
2299 declaration_t *declaration = type->compound.declaration;
2300 declaration_t *iter = declaration->scope.declarations;
2301 for( ; iter != NULL; iter = iter->next) {
2302 if(iter->symbol == symbol) {
2306 assert(iter != NULL);
2308 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2309 offset += get_entity_offset(iter->v.entity);
2311 orig_type = iter->type;
2313 expression_t *array_index = designator->array_index;
2314 assert(designator->array_index != NULL);
2315 assert(is_type_array(type));
2316 assert(is_type_valid(array_index->base.type));
2318 long index = fold_constant(array_index);
2319 ir_type *arr_type = get_ir_type(type);
2320 ir_type *elem_type = get_array_element_type(arr_type);
2321 long elem_size = get_type_size_bytes(elem_type);
2323 offset += index * elem_size;
2325 orig_type = type->array.element_type;
2332 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2334 ir_mode *mode = get_ir_mode(expression->base.type);
2335 long offset = get_offsetof_offset(expression);
2336 tarval *tv = new_tarval_from_long(offset, mode);
2337 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2339 return new_d_Const(dbgi, mode, tv);
2342 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2343 ir_entity *entity, type_t *type);
2345 static ir_node *compound_literal_to_firm(
2346 const compound_literal_expression_t *expression)
2348 type_t *type = expression->type;
2350 /* create an entity on the stack */
2351 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2353 ident *const id = id_unique("CompLit.%u");
2354 ir_type *const irtype = get_ir_type(type);
2355 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2356 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2357 set_entity_ld_ident(entity, id);
2359 set_entity_variability(entity, variability_uninitialized);
2361 /* create initialisation code */
2362 initializer_t *initializer = expression->initializer;
2363 create_local_initializer(initializer, dbgi, entity, type);
2365 /* create a sel for the compound literal address */
2366 ir_node *frame = get_local_frame(entity);
2367 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2372 * Transform a sizeof expression into Firm code.
2374 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2376 type_t *type = expression->type;
2378 type = expression->tp_expression->base.type;
2379 assert(type != NULL);
2382 type = skip_typeref(type);
2383 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2384 if(is_type_array(type) && type->array.is_vla
2385 && expression->tp_expression != NULL) {
2386 expression_to_firm(expression->tp_expression);
2389 return get_type_size(type);
2393 * Transform an alignof expression into Firm code.
2395 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2397 type_t *type = expression->type;
2399 /* beware: if expression is a variable reference, return the
2400 alignment of the variable. */
2401 const expression_t *tp_expression = expression->tp_expression;
2402 const declaration_t *declaration = expr_is_variable(tp_expression);
2403 if (declaration != NULL) {
2404 /* TODO: get the alignment of this variable. */
2406 type = tp_expression->base.type;
2407 assert(type != NULL);
2410 ir_mode *const mode = get_ir_mode(expression->base.type);
2411 symconst_symbol sym;
2412 sym.type_p = get_ir_type(type);
2413 return new_SymConst(mode, sym, symconst_type_align);
2416 static void init_ir_types(void);
2417 long fold_constant(const expression_t *expression)
2421 assert(is_constant_expression(expression));
2423 ir_graph *old_current_ir_graph = current_ir_graph;
2424 if(current_ir_graph == NULL) {
2425 current_ir_graph = get_const_code_irg();
2428 ir_node *cnst = expression_to_firm(expression);
2429 current_ir_graph = old_current_ir_graph;
2431 if(!is_Const(cnst)) {
2432 panic("couldn't fold constant\n");
2435 tarval *tv = get_Const_tarval(cnst);
2436 if(!tarval_is_long(tv)) {
2437 panic("result of constant folding is not integer\n");
2440 return get_tarval_long(tv);
2443 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2445 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2447 /* first try to fold a constant condition */
2448 if(is_constant_expression(expression->condition)) {
2449 long val = fold_constant(expression->condition);
2451 return expression_to_firm(expression->true_expression);
2453 return expression_to_firm(expression->false_expression);
2457 ir_node *cur_block = get_cur_block();
2459 /* create the true block */
2460 ir_node *true_block = new_immBlock();
2462 ir_node *true_val = expression_to_firm(expression->true_expression);
2463 ir_node *true_jmp = new_Jmp();
2465 /* create the false block */
2466 ir_node *false_block = new_immBlock();
2468 ir_node *false_val = expression_to_firm(expression->false_expression);
2469 ir_node *false_jmp = new_Jmp();
2471 /* create the condition evaluation */
2472 set_cur_block(cur_block);
2473 create_condition_evaluation(expression->condition, true_block, false_block);
2474 mature_immBlock(true_block);
2475 mature_immBlock(false_block);
2477 /* create the common block */
2478 ir_node *common_block = new_immBlock();
2479 add_immBlock_pred(common_block, true_jmp);
2480 add_immBlock_pred(common_block, false_jmp);
2481 mature_immBlock(common_block);
2483 /* TODO improve static semantics, so either both or no values are NULL */
2484 if (true_val == NULL || false_val == NULL)
2487 ir_node *in[2] = { true_val, false_val };
2488 ir_mode *mode = get_irn_mode(true_val);
2489 assert(get_irn_mode(false_val) == mode);
2490 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2495 static ir_node *select_addr(const select_expression_t *expression)
2497 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2499 ir_node *compound_addr = expression_to_firm(expression->compound);
2501 /* make sure the type is constructed */
2502 type_t *type = skip_typeref(expression->compound->base.type);
2503 if (is_type_pointer(type)) {
2504 type = type->pointer.points_to;
2506 (void) get_ir_type(type);
2508 declaration_t *entry = expression->compound_entry;
2509 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2510 ir_entity *entity = entry->v.entity;
2512 assert(entity != NULL);
2514 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2519 static ir_node *select_to_firm(const select_expression_t *expression)
2521 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2522 ir_node *addr = select_addr(expression);
2523 type_t *type = revert_automatic_type_conversion(
2524 (const expression_t*) expression);
2525 type = skip_typeref(type);
2527 return deref_address(type, addr, dbgi);
2530 /* Values returned by __builtin_classify_type. */
2531 typedef enum gcc_type_class
2537 enumeral_type_class,
2540 reference_type_class,
2544 function_type_class,
2555 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2557 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2563 const atomic_type_t *const atomic_type = &type->atomic;
2564 switch (atomic_type->akind) {
2565 /* should not be reached */
2566 case ATOMIC_TYPE_INVALID:
2570 /* gcc cannot do that */
2571 case ATOMIC_TYPE_VOID:
2572 tc = void_type_class;
2575 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2576 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2577 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2578 case ATOMIC_TYPE_SHORT:
2579 case ATOMIC_TYPE_USHORT:
2580 case ATOMIC_TYPE_INT:
2581 case ATOMIC_TYPE_UINT:
2582 case ATOMIC_TYPE_LONG:
2583 case ATOMIC_TYPE_ULONG:
2584 case ATOMIC_TYPE_LONGLONG:
2585 case ATOMIC_TYPE_ULONGLONG:
2586 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2587 tc = integer_type_class;
2590 case ATOMIC_TYPE_FLOAT:
2591 case ATOMIC_TYPE_DOUBLE:
2592 case ATOMIC_TYPE_LONG_DOUBLE:
2593 tc = real_type_class;
2596 panic("Unexpected atomic type in classify_type_to_firm().");
2599 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2600 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2601 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2602 case TYPE_ARRAY: /* gcc handles this as pointer */
2603 case TYPE_FUNCTION: /* gcc handles this as pointer */
2604 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2605 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2606 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2608 /* gcc handles this as integer */
2609 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2612 /* typedef/typeof should be skipped already */
2619 panic("unexpected TYPE classify_type_to_firm().");
2622 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2623 ir_mode *const mode = mode_int;
2624 tarval *const tv = new_tarval_from_long(tc, mode);
2625 return new_d_Const(dbgi, mode, tv);
2628 static ir_node *function_name_to_firm(
2629 const funcname_expression_t *const expr)
2631 switch(expr->kind) {
2632 case FUNCNAME_FUNCTION:
2633 case FUNCNAME_PRETTY_FUNCTION:
2634 case FUNCNAME_FUNCDNAME:
2635 if (current_function_name == NULL) {
2636 const source_position_t *const src_pos = &expr->base.source_position;
2637 const char *const name = current_function_decl->symbol->string;
2638 const string_t string = { name, strlen(name) + 1 };
2639 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2641 return current_function_name;
2642 case FUNCNAME_FUNCSIG:
2643 if (current_funcsig == NULL) {
2644 const source_position_t *const src_pos = &expr->base.source_position;
2645 ir_entity *ent = get_irg_entity(current_ir_graph);
2646 const char *const name = get_entity_ld_name(ent);
2647 const string_t string = { name, strlen(name) + 1 };
2648 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2650 return current_funcsig;
2652 panic("Unsupported function name");
2655 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2657 statement_t *statement = expr->statement;
2659 assert(statement->kind == STATEMENT_COMPOUND);
2660 return compound_statement_to_firm(&statement->compound);
2663 static ir_node *va_start_expression_to_firm(
2664 const va_start_expression_t *const expr)
2666 ir_type *const method_type = get_ir_type(current_function_decl->type);
2667 int const n = get_method_n_params(method_type) - 1;
2668 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2669 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2670 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2671 ir_node *const no_mem = new_NoMem();
2672 ir_node *const arg_sel =
2673 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2675 ir_node *const cnst = get_type_size(expr->parameter->type);
2676 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2677 set_value_for_expression(expr->ap, add);
2682 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2684 type_t *const type = expr->base.type;
2685 ir_node *const ap = expression_to_firm(expr->ap);
2686 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2687 ir_node *const res = deref_address(type, ap, dbgi);
2689 ir_node *const cnst = get_type_size(expr->base.type);
2690 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2691 set_value_for_expression(expr->ap, add);
2696 static ir_node *dereference_addr(const unary_expression_t *const expression)
2698 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2699 return expression_to_firm(expression->value);
2702 static ir_node *expression_to_addr(const expression_t *expression)
2704 switch(expression->kind) {
2705 case EXPR_REFERENCE:
2706 return reference_addr(&expression->reference);
2707 case EXPR_ARRAY_ACCESS:
2708 return array_access_addr(&expression->array_access);
2710 return select_addr(&expression->select);
2712 return call_expression_to_firm(&expression->call);
2713 case EXPR_UNARY_DEREFERENCE: {
2714 return dereference_addr(&expression->unary);
2719 panic("trying to get address of non-lvalue");
2722 static ir_node *builtin_constant_to_firm(
2723 const builtin_constant_expression_t *expression)
2725 ir_mode *mode = get_ir_mode(expression->base.type);
2728 if (is_constant_expression(expression->value)) {
2733 return new_Const_long(mode, v);
2736 static ir_node *builtin_prefetch_to_firm(
2737 const builtin_prefetch_expression_t *expression)
2739 ir_node *adr = expression_to_firm(expression->adr);
2740 /* no Firm support for prefetch yet */
2745 static ir_node *_expression_to_firm(const expression_t *expression)
2747 switch(expression->kind) {
2748 case EXPR_CHARACTER_CONSTANT:
2749 return character_constant_to_firm(&expression->conste);
2750 case EXPR_WIDE_CHARACTER_CONSTANT:
2751 return wide_character_constant_to_firm(&expression->conste);
2753 return const_to_firm(&expression->conste);
2754 case EXPR_STRING_LITERAL:
2755 return string_literal_to_firm(&expression->string);
2756 case EXPR_WIDE_STRING_LITERAL:
2757 return wide_string_literal_to_firm(&expression->wide_string);
2758 case EXPR_REFERENCE:
2759 return reference_expression_to_firm(&expression->reference);
2761 return call_expression_to_firm(&expression->call);
2763 return unary_expression_to_firm(&expression->unary);
2765 return binary_expression_to_firm(&expression->binary);
2766 case EXPR_ARRAY_ACCESS:
2767 return array_access_to_firm(&expression->array_access);
2769 return sizeof_to_firm(&expression->typeprop);
2771 return alignof_to_firm(&expression->typeprop);
2772 case EXPR_CONDITIONAL:
2773 return conditional_to_firm(&expression->conditional);
2775 return select_to_firm(&expression->select);
2776 case EXPR_CLASSIFY_TYPE:
2777 return classify_type_to_firm(&expression->classify_type);
2779 return function_name_to_firm(&expression->funcname);
2780 case EXPR_STATEMENT:
2781 return statement_expression_to_firm(&expression->statement);
2783 return va_start_expression_to_firm(&expression->va_starte);
2785 return va_arg_expression_to_firm(&expression->va_arge);
2786 case EXPR_BUILTIN_SYMBOL:
2787 panic("unimplemented expression found");
2788 case EXPR_BUILTIN_CONSTANT_P:
2789 return builtin_constant_to_firm(&expression->builtin_constant);
2790 case EXPR_BUILTIN_PREFETCH:
2791 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2793 return offsetof_to_firm(&expression->offsetofe);
2794 case EXPR_COMPOUND_LITERAL:
2795 return compound_literal_to_firm(&expression->compound_literal);
2801 panic("invalid expression found");
2804 static ir_node *expression_to_firm(const expression_t *expression)
2806 ir_node *res = _expression_to_firm(expression);
2808 if(res != NULL && get_irn_mode(res) == mode_b) {
2809 ir_mode *mode = get_ir_mode(expression->base.type);
2811 if(is_Const_null(res)) {
2812 return new_Const_long(mode, 0);
2814 assert(is_Const_one(res));
2815 return new_Const_long(mode, 1);
2819 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2820 return produce_condition_result(expression, dbgi);
2826 static ir_node *expression_to_modeb(const expression_t *expression)
2828 ir_node *res = _expression_to_firm(expression);
2829 res = create_conv(NULL, res, mode_b);
2835 * create a short-circuit expression evaluation that tries to construct
2836 * efficient control flow structures for &&, || and ! expressions
2838 static void create_condition_evaluation(const expression_t *expression,
2839 ir_node *true_block,
2840 ir_node *false_block)
2842 switch(expression->kind) {
2843 case EXPR_UNARY_NOT: {
2844 const unary_expression_t *unary_expression = &expression->unary;
2845 create_condition_evaluation(unary_expression->value, false_block,
2849 case EXPR_BINARY_LOGICAL_AND: {
2850 const binary_expression_t *binary_expression = &expression->binary;
2852 ir_node *cur_block = get_cur_block();
2853 ir_node *extra_block = new_immBlock();
2854 set_cur_block(cur_block);
2855 create_condition_evaluation(binary_expression->left, extra_block,
2857 mature_immBlock(extra_block);
2858 set_cur_block(extra_block);
2859 create_condition_evaluation(binary_expression->right, true_block,
2863 case EXPR_BINARY_LOGICAL_OR: {
2864 const binary_expression_t *binary_expression = &expression->binary;
2866 ir_node *cur_block = get_cur_block();
2867 ir_node *extra_block = new_immBlock();
2868 set_cur_block(cur_block);
2869 create_condition_evaluation(binary_expression->left, true_block,
2871 mature_immBlock(extra_block);
2872 set_cur_block(extra_block);
2873 create_condition_evaluation(binary_expression->right, true_block,
2881 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2882 ir_node *condition = expression_to_modeb(expression);
2883 ir_node *cond = new_d_Cond(dbgi, condition);
2884 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2885 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2887 /* set branch prediction info based on __builtin_expect */
2888 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2889 long cnst = fold_constant(expression->binary.right);
2890 cond_jmp_predicate pred;
2893 pred = COND_JMP_PRED_FALSE;
2895 pred = COND_JMP_PRED_TRUE;
2897 set_Cond_jmp_pred(cond, pred);
2900 add_immBlock_pred(true_block, true_proj);
2901 add_immBlock_pred(false_block, false_proj);
2903 set_cur_block(NULL);
2908 static void create_declaration_entity(declaration_t *declaration,
2909 declaration_kind_t declaration_kind,
2910 ir_type *parent_type)
2912 ident *const id = new_id_from_str(declaration->symbol->string);
2913 type_t *const type = skip_typeref(declaration->type);
2914 ir_type *const irtype = get_ir_type(type);
2915 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2916 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2918 declaration->declaration_kind = (unsigned char) declaration_kind;
2919 declaration->v.entity = entity;
2920 set_entity_variability(entity, variability_uninitialized);
2921 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
2922 if(parent_type == get_tls_type())
2923 set_entity_allocation(entity, allocation_automatic);
2924 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2925 set_entity_allocation(entity, allocation_static);
2927 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2928 set_entity_volatility(entity, volatility_is_volatile);
2933 typedef struct type_path_entry_t type_path_entry_t;
2934 struct type_path_entry_t {
2936 ir_initializer_t *initializer;
2938 declaration_t *compound_entry;
2941 typedef struct type_path_t type_path_t;
2942 struct type_path_t {
2943 type_path_entry_t *path;
2948 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2950 size_t len = ARR_LEN(path->path);
2952 for(size_t i = 0; i < len; ++i) {
2953 const type_path_entry_t *entry = & path->path[i];
2955 type_t *type = skip_typeref(entry->type);
2956 if(is_type_compound(type)) {
2957 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2958 } else if(is_type_array(type)) {
2959 fprintf(stderr, "[%zd]", entry->index);
2961 fprintf(stderr, "-INVALID-");
2964 fprintf(stderr, " (");
2965 print_type(path->top_type);
2966 fprintf(stderr, ")");
2969 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2971 size_t len = ARR_LEN(path->path);
2973 return & path->path[len-1];
2976 static type_path_entry_t *append_to_type_path(type_path_t *path)
2978 size_t len = ARR_LEN(path->path);
2979 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2981 type_path_entry_t *result = & path->path[len];
2982 memset(result, 0, sizeof(result[0]));
2986 static size_t get_compound_size(const compound_type_t *type)
2988 declaration_t *declaration = type->declaration;
2989 declaration_t *member = declaration->scope.declarations;
2991 for( ; member != NULL; member = member->next) {
2994 /* TODO: cache results? */
2999 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3001 type_t *orig_top_type = path->top_type;
3002 type_t *top_type = skip_typeref(orig_top_type);
3004 assert(is_type_compound(top_type) || is_type_array(top_type));
3006 if(ARR_LEN(path->path) == 0) {
3009 type_path_entry_t *top = get_type_path_top(path);
3010 ir_initializer_t *initializer = top->initializer;
3011 return get_initializer_compound_value(initializer, top->index);
3015 static void descend_into_subtype(type_path_t *path)
3017 type_t *orig_top_type = path->top_type;
3018 type_t *top_type = skip_typeref(orig_top_type);
3020 assert(is_type_compound(top_type) || is_type_array(top_type));
3022 ir_initializer_t *initializer = get_initializer_entry(path);
3024 type_path_entry_t *top = append_to_type_path(path);
3025 top->type = top_type;
3029 if(is_type_compound(top_type)) {
3030 declaration_t *declaration = top_type->compound.declaration;
3031 declaration_t *entry = declaration->scope.declarations;
3033 top->compound_entry = entry;
3035 len = get_compound_size(&top_type->compound);
3037 path->top_type = entry->type;
3039 assert(is_type_array(top_type));
3040 assert(top_type->array.size > 0);
3043 path->top_type = top_type->array.element_type;
3044 len = top_type->array.size;
3046 if(initializer == NULL
3047 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3048 initializer = create_initializer_compound(len);
3049 /* we have to set the entry at the 2nd latest path entry... */
3050 size_t path_len = ARR_LEN(path->path);
3051 assert(path_len >= 1);
3053 type_path_entry_t *entry = & path->path[path_len-2];
3054 ir_initializer_t *tinitializer = entry->initializer;
3055 set_initializer_compound_value(tinitializer, entry->index,
3059 top->initializer = initializer;
3062 static void ascend_from_subtype(type_path_t *path)
3064 type_path_entry_t *top = get_type_path_top(path);
3066 path->top_type = top->type;
3068 size_t len = ARR_LEN(path->path);
3069 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3072 static void walk_designator(type_path_t *path, const designator_t *designator)
3074 /* designators start at current object type */
3075 ARR_RESIZE(type_path_entry_t, path->path, 1);
3077 for( ; designator != NULL; designator = designator->next) {
3078 type_path_entry_t *top = get_type_path_top(path);
3079 type_t *orig_type = top->type;
3080 type_t *type = skip_typeref(orig_type);
3082 if(designator->symbol != NULL) {
3083 assert(is_type_compound(type));
3085 symbol_t *symbol = designator->symbol;
3087 declaration_t *declaration = type->compound.declaration;
3088 declaration_t *iter = declaration->scope.declarations;
3089 for( ; iter != NULL; iter = iter->next, ++index) {
3090 if(iter->symbol == symbol) {
3094 assert(iter != NULL);
3096 top->type = orig_type;
3097 top->compound_entry = iter;
3099 orig_type = iter->type;
3101 expression_t *array_index = designator->array_index;
3102 assert(designator->array_index != NULL);
3103 assert(is_type_array(type));
3104 assert(is_type_valid(array_index->base.type));
3106 long index = fold_constant(array_index);
3109 if(type->array.size_constant == 1) {
3110 long array_size = type->array.size;
3111 assert(index < array_size);
3115 top->type = orig_type;
3116 top->index = (size_t) index;
3117 orig_type = type->array.element_type;
3119 path->top_type = orig_type;
3121 if(designator->next != NULL) {
3122 descend_into_subtype(path);
3126 path->invalid = false;
3129 static void advance_current_object(type_path_t *path)
3132 /* TODO: handle this... */
3133 panic("invalid initializer in ast2firm (excessive elements)");
3137 type_path_entry_t *top = get_type_path_top(path);
3139 type_t *type = skip_typeref(top->type);
3140 if(is_type_union(type)) {
3141 top->compound_entry = NULL;
3142 } else if(is_type_struct(type)) {
3143 declaration_t *entry = top->compound_entry;
3146 entry = entry->next;
3147 top->compound_entry = entry;
3149 path->top_type = entry->type;
3153 assert(is_type_array(type));
3156 if(!type->array.size_constant || top->index < type->array.size) {
3161 /* we're past the last member of the current sub-aggregate, try if we
3162 * can ascend in the type hierarchy and continue with another subobject */
3163 size_t len = ARR_LEN(path->path);
3166 ascend_from_subtype(path);
3167 advance_current_object(path);
3169 path->invalid = true;
3174 static ir_initializer_t *create_ir_initializer(
3175 const initializer_t *initializer, type_t *type);
3177 static ir_initializer_t *create_ir_initializer_value(
3178 const initializer_value_t *initializer)
3180 if (is_type_compound(initializer->value->base.type)) {
3181 panic("initializer creation for compounds not implemented yet");
3183 ir_node *value = expression_to_firm(initializer->value);
3184 return create_initializer_const(value);
3187 static ir_initializer_t *create_ir_initializer_list(
3188 const initializer_list_t *initializer, type_t *type)
3191 memset(&path, 0, sizeof(path));
3192 path.top_type = type;
3193 path.path = NEW_ARR_F(type_path_entry_t, 0);
3195 descend_into_subtype(&path);
3197 for(size_t i = 0; i < initializer->len; ++i) {
3198 const initializer_t *sub_initializer = initializer->initializers[i];
3200 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3201 walk_designator(&path, sub_initializer->designator.designator);
3205 if(sub_initializer->kind == INITIALIZER_VALUE) {
3206 /* we might have to descend into types until we're at a scalar
3209 type_t *orig_top_type = path.top_type;
3210 type_t *top_type = skip_typeref(orig_top_type);
3212 if(is_type_scalar(top_type))
3214 descend_into_subtype(&path);
3218 ir_initializer_t *sub_irinitializer
3219 = create_ir_initializer(sub_initializer, path.top_type);
3221 size_t path_len = ARR_LEN(path.path);
3222 assert(path_len >= 1);
3223 type_path_entry_t *entry = & path.path[path_len-1];
3224 ir_initializer_t *tinitializer = entry->initializer;
3225 set_initializer_compound_value(tinitializer, entry->index,
3228 advance_current_object(&path);
3231 assert(ARR_LEN(path.path) >= 1);
3232 ir_initializer_t *result = path.path[0].initializer;
3233 DEL_ARR_F(path.path);
3238 static ir_initializer_t *create_ir_initializer_string(
3239 const initializer_string_t *initializer, type_t *type)
3241 type = skip_typeref(type);
3243 size_t string_len = initializer->string.size;
3244 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3245 size_t len = type->array.size;
3246 ir_initializer_t *irinitializer = create_initializer_compound(len);
3248 const char *string = initializer->string.begin;
3249 ir_mode *mode = get_type_mode(ir_type_const_char);
3251 for(size_t i = 0; i < len; ++i) {
3256 tarval *tv = new_tarval_from_long(c, mode);
3257 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3259 set_initializer_compound_value(irinitializer, i, char_initializer);
3262 return irinitializer;
3265 static ir_initializer_t *create_ir_initializer_wide_string(
3266 const initializer_wide_string_t *initializer, type_t *type)
3268 size_t string_len = initializer->string.size;
3269 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3270 size_t len = type->array.size;
3271 ir_initializer_t *irinitializer = create_initializer_compound(len);
3273 const wchar_rep_t *string = initializer->string.begin;
3274 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3276 for(size_t i = 0; i < len; ++i) {
3278 if(i < string_len) {
3281 tarval *tv = new_tarval_from_long(c, mode);
3282 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3284 set_initializer_compound_value(irinitializer, i, char_initializer);
3287 return irinitializer;
3290 static ir_initializer_t *create_ir_initializer(
3291 const initializer_t *initializer, type_t *type)
3293 switch(initializer->kind) {
3294 case INITIALIZER_STRING:
3295 return create_ir_initializer_string(&initializer->string, type);
3297 case INITIALIZER_WIDE_STRING:
3298 return create_ir_initializer_wide_string(&initializer->wide_string,
3301 case INITIALIZER_LIST:
3302 return create_ir_initializer_list(&initializer->list, type);
3304 case INITIALIZER_VALUE:
3305 return create_ir_initializer_value(&initializer->value);
3307 case INITIALIZER_DESIGNATOR:
3308 panic("unexpected designator initializer found");
3310 panic("unknown initializer");
3313 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3316 if (is_atomic_type(type)) {
3317 ir_mode *mode = get_type_mode(type);
3318 tarval *zero = get_mode_null(mode);
3319 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3321 /* TODO: bitfields */
3322 ir_node *mem = get_store();
3323 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3324 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3327 assert(is_compound_type(type));
3330 if(is_Array_type(type)) {
3331 assert(has_array_upper_bound(type, 0));
3332 n_members = get_array_upper_bound_int(type, 0);
3334 n_members = get_compound_n_members(type);
3337 for(int i = 0; i < n_members; ++i) {
3340 if(is_Array_type(type)) {
3341 ir_entity *entity = get_array_element_entity(type);
3342 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3343 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3344 ir_node *in[1] = { cnst };
3345 irtype = get_array_element_type(type);
3346 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3348 ir_entity *member = get_compound_member(type, i);
3350 irtype = get_entity_type(member);
3351 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3354 create_dynamic_null_initializer(irtype, dbgi, addr);
3359 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3360 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3362 switch(get_initializer_kind(initializer)) {
3363 case IR_INITIALIZER_NULL: {
3364 create_dynamic_null_initializer(type, dbgi, base_addr);
3367 case IR_INITIALIZER_CONST: {
3368 ir_node *node = get_initializer_const_value(initializer);
3369 ir_mode *mode = get_irn_mode(node);
3370 assert(get_type_mode(type) == mode);
3372 /* TODO: bitfields... */
3373 ir_node *mem = get_store();
3374 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3375 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3379 case IR_INITIALIZER_TARVAL: {
3380 tarval *tv = get_initializer_tarval_value(initializer);
3381 ir_mode *mode = get_tarval_mode(tv);
3382 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3383 assert(get_type_mode(type) == mode);
3385 /* TODO: bitfields... */
3386 ir_node *mem = get_store();
3387 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3388 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3392 case IR_INITIALIZER_COMPOUND: {
3393 assert(is_compound_type(type));
3395 if(is_Array_type(type)) {
3396 assert(has_array_upper_bound(type, 0));
3397 n_members = get_array_upper_bound_int(type, 0);
3399 n_members = get_compound_n_members(type);
3402 if(get_initializer_compound_n_entries(initializer)
3403 != (unsigned) n_members)
3404 panic("initializer doesn't match compound type");
3406 for(int i = 0; i < n_members; ++i) {
3409 if(is_Array_type(type)) {
3410 ir_entity *entity = get_array_element_entity(type);
3411 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3412 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3413 ir_node *in[1] = { cnst };
3414 irtype = get_array_element_type(type);
3415 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3417 ir_entity *member = get_compound_member(type, i);
3419 irtype = get_entity_type(member);
3420 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3423 ir_initializer_t *sub_init
3424 = get_initializer_compound_value(initializer, i);
3426 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3432 panic("invalid IR_INITIALIZER found");
3435 static void create_dynamic_initializer(ir_initializer_t *initializer,
3436 dbg_info *dbgi, ir_entity *entity)
3438 ir_node *frame = get_local_frame(entity);
3439 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3440 ir_type *type = get_entity_type(entity);
3442 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3445 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3446 ir_entity *entity, type_t *type)
3448 ir_node *memory = get_store();
3449 ir_node *nomem = new_NoMem();
3450 ir_node *frame = get_irg_frame(current_ir_graph);
3451 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3453 if(initializer->kind == INITIALIZER_VALUE) {
3454 initializer_value_t *initializer_value = &initializer->value;
3456 ir_node *value = expression_to_firm(initializer_value->value);
3457 type = skip_typeref(type);
3458 assign_value(dbgi, addr, type, value);
3462 if(!is_constant_initializer(initializer)) {
3463 ir_initializer_t *irinitializer
3464 = create_ir_initializer(initializer, type);
3466 create_dynamic_initializer(irinitializer, dbgi, entity);
3470 /* create the ir_initializer */
3471 ir_graph *const old_current_ir_graph = current_ir_graph;
3472 current_ir_graph = get_const_code_irg();
3474 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3476 assert(current_ir_graph == get_const_code_irg());
3477 current_ir_graph = old_current_ir_graph;
3479 /* create a "template" entity which is copied to the entity on the stack */
3480 ident *const id = id_unique("initializer.%u");
3481 ir_type *const irtype = get_ir_type(type);
3482 ir_type *const global_type = get_glob_type();
3483 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3484 set_entity_ld_ident(init_entity, id);
3486 set_entity_variability(init_entity, variability_initialized);
3487 set_entity_visibility(init_entity, visibility_local);
3488 set_entity_allocation(init_entity, allocation_static);
3490 set_entity_initializer(init_entity, irinitializer);
3492 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3493 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3495 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3496 set_store(copyb_mem);
3499 static void create_initializer_local_variable_entity(declaration_t *declaration)
3501 initializer_t *initializer = declaration->init.initializer;
3502 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3503 ir_entity *entity = declaration->v.entity;
3504 type_t *type = declaration->type;
3505 create_local_initializer(initializer, dbgi, entity, type);
3508 static void create_declaration_initializer(declaration_t *declaration)
3510 initializer_t *initializer = declaration->init.initializer;
3511 if(initializer == NULL)
3514 declaration_kind_t declaration_kind
3515 = (declaration_kind_t) declaration->declaration_kind;
3516 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3517 create_initializer_local_variable_entity(declaration);
3521 if(initializer->kind == INITIALIZER_VALUE) {
3522 initializer_value_t *initializer_value = &initializer->value;
3524 ir_node *value = expression_to_firm(initializer_value->value);
3526 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3527 set_value(declaration->v.value_number, value);
3529 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3531 ir_entity *entity = declaration->v.entity;
3533 set_entity_variability(entity, variability_initialized);
3534 set_atomic_ent_value(entity, value);
3537 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3538 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3540 ir_entity *entity = declaration->v.entity;
3541 ir_initializer_t *irinitializer
3542 = create_ir_initializer(initializer, declaration->type);
3544 set_entity_variability(entity, variability_initialized);
3545 set_entity_initializer(entity, irinitializer);
3549 static void create_variable_length_array(declaration_t *declaration)
3551 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3552 type_t *type = declaration->type;
3553 ir_node *mem = get_store();
3554 ir_type *el_type = get_ir_type(type->array.element_type);
3556 /* make sure size_node is calculated */
3557 get_type_size(type);
3558 ir_node *elems = type->array.size_node;
3559 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3561 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3562 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3565 /* initializers are not allowed for VLAs */
3566 assert(declaration->init.initializer == NULL);
3568 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3569 declaration->v.vla_base = addr;
3571 /* TODO: record VLA somewhere so we create the free node when we leave
3576 * Creates a Firm local variable from a declaration.
3578 static void create_local_variable(declaration_t *declaration)
3580 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3582 bool needs_entity = declaration->address_taken;
3583 type_t *type = skip_typeref(declaration->type);
3585 /* is it a variable length array? */
3586 if(is_type_array(type) && !type->array.size_constant) {
3587 create_variable_length_array(declaration);
3589 } else if(is_type_array(type) || is_type_compound(type)) {
3590 needs_entity = true;
3591 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3592 needs_entity = true;
3596 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3597 create_declaration_entity(declaration,
3598 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3601 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3602 declaration->v.value_number = next_value_number_function;
3603 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3604 ++next_value_number_function;
3607 create_declaration_initializer(declaration);
3610 static void create_local_static_variable(declaration_t *declaration)
3612 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3614 type_t *const type = skip_typeref(declaration->type);
3615 ir_type *const global_type = get_glob_type();
3616 ident *const id = new_id_from_str(declaration->symbol->string);
3617 ir_type *const irtype = get_ir_type(type);
3618 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3619 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3621 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3622 set_entity_volatility(entity, volatility_is_volatile);
3625 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3626 declaration->v.entity = entity;
3627 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3628 set_entity_variability(entity, variability_uninitialized);
3629 set_entity_visibility(entity, visibility_local);
3630 set_entity_allocation(entity, allocation_static);
3632 ir_graph *const old_current_ir_graph = current_ir_graph;
3633 current_ir_graph = get_const_code_irg();
3635 create_declaration_initializer(declaration);
3637 assert(current_ir_graph == get_const_code_irg());
3638 current_ir_graph = old_current_ir_graph;
3643 static void return_statement_to_firm(return_statement_t *statement)
3645 if(get_cur_block() == NULL)
3648 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3649 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3654 if(get_method_n_ress(func_irtype) > 0) {
3655 ir_type *res_type = get_method_res_type(func_irtype, 0);
3657 if(statement->value != NULL) {
3658 ir_node *node = expression_to_firm(statement->value);
3659 node = do_strict_conv(dbgi, node);
3663 if(is_compound_type(res_type)) {
3666 mode = get_type_mode(res_type);
3668 in[0] = new_Unknown(mode);
3672 /* build return_value for its side effects */
3673 if(statement->value != NULL) {
3674 expression_to_firm(statement->value);
3679 ir_node *store = get_store();
3680 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3682 ir_node *end_block = get_irg_end_block(current_ir_graph);
3683 add_immBlock_pred(end_block, ret);
3685 set_cur_block(NULL);
3688 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3690 if(get_cur_block() == NULL)
3693 return expression_to_firm(statement->expression);
3696 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3698 ir_node *result = NULL;
3699 statement_t *statement = compound->statements;
3700 for( ; statement != NULL; statement = statement->base.next) {
3701 //context2firm(&statement->scope);
3703 if(statement->base.next == NULL
3704 && statement->kind == STATEMENT_EXPRESSION) {
3705 result = expression_statement_to_firm(
3706 &statement->expression);
3709 statement_to_firm(statement);
3715 static void create_global_variable(declaration_t *declaration)
3719 switch ((storage_class_tag_t)declaration->storage_class) {
3720 case STORAGE_CLASS_STATIC:
3721 vis = visibility_local;
3724 case STORAGE_CLASS_EXTERN:
3725 vis = visibility_external_allocated;
3728 case STORAGE_CLASS_NONE:
3729 vis = visibility_external_visible;
3732 case STORAGE_CLASS_THREAD:
3733 vis = visibility_external_visible;
3736 case STORAGE_CLASS_THREAD_EXTERN:
3737 vis = visibility_external_allocated;
3740 case STORAGE_CLASS_THREAD_STATIC:
3741 vis = visibility_local;
3745 var_type = get_tls_type();
3749 var_type = get_glob_type();
3753 create_declaration_entity(declaration,
3754 DECLARATION_KIND_GLOBAL_VARIABLE,
3756 set_entity_visibility(declaration->v.entity, vis);
3760 case STORAGE_CLASS_TYPEDEF:
3761 case STORAGE_CLASS_AUTO:
3762 case STORAGE_CLASS_REGISTER:
3763 case STORAGE_CLASS_ENUM_ENTRY:
3766 panic("Invalid storage class for global variable");
3769 static void create_local_declaration(declaration_t *declaration)
3771 if(declaration->symbol == NULL)
3774 type_t *type = skip_typeref(declaration->type);
3776 switch ((storage_class_tag_t) declaration->storage_class) {
3777 case STORAGE_CLASS_STATIC:
3778 create_local_static_variable(declaration);
3780 case STORAGE_CLASS_EXTERN:
3781 create_global_variable(declaration);
3782 create_declaration_initializer(declaration);
3784 case STORAGE_CLASS_NONE:
3785 case STORAGE_CLASS_AUTO:
3786 case STORAGE_CLASS_REGISTER:
3787 if(is_type_function(type)) {
3788 if(declaration->init.statement != NULL) {
3789 panic("nested functions not supported yet");
3791 get_function_entity(declaration);
3794 create_local_variable(declaration);
3797 case STORAGE_CLASS_ENUM_ENTRY:
3798 case STORAGE_CLASS_TYPEDEF:
3799 case STORAGE_CLASS_THREAD:
3800 case STORAGE_CLASS_THREAD_EXTERN:
3801 case STORAGE_CLASS_THREAD_STATIC:
3804 panic("invalid storage class found");
3807 static void declaration_statement_to_firm(declaration_statement_t *statement)
3809 declaration_t *declaration = statement->declarations_begin;
3810 declaration_t *end = statement->declarations_end->next;
3811 for( ; declaration != end; declaration = declaration->next) {
3812 if(declaration->namespc != NAMESPACE_NORMAL)
3814 create_local_declaration(declaration);
3818 static void if_statement_to_firm(if_statement_t *statement)
3820 ir_node *cur_block = get_cur_block();
3822 ir_node *fallthrough_block = new_immBlock();
3824 /* the true (blocks) */
3825 ir_node *true_block;
3826 if (statement->true_statement != NULL) {
3827 true_block = new_immBlock();
3828 statement_to_firm(statement->true_statement);
3829 if(get_cur_block() != NULL) {
3830 ir_node *jmp = new_Jmp();
3831 add_immBlock_pred(fallthrough_block, jmp);
3834 true_block = fallthrough_block;
3837 /* the false (blocks) */
3838 ir_node *false_block;
3839 if(statement->false_statement != NULL) {
3840 false_block = new_immBlock();
3842 statement_to_firm(statement->false_statement);
3843 if(get_cur_block() != NULL) {
3844 ir_node *jmp = new_Jmp();
3845 add_immBlock_pred(fallthrough_block, jmp);
3848 false_block = fallthrough_block;
3851 /* create the condition */
3852 if(cur_block != NULL) {
3853 set_cur_block(cur_block);
3854 create_condition_evaluation(statement->condition, true_block,
3858 mature_immBlock(true_block);
3859 if(false_block != fallthrough_block) {
3860 mature_immBlock(false_block);
3862 mature_immBlock(fallthrough_block);
3864 set_cur_block(fallthrough_block);
3867 static void while_statement_to_firm(while_statement_t *statement)
3869 ir_node *jmp = NULL;
3870 if(get_cur_block() != NULL) {
3874 /* create the header block */
3875 ir_node *header_block = new_immBlock();
3877 add_immBlock_pred(header_block, jmp);
3880 /* the false block */
3881 ir_node *false_block = new_immBlock();
3884 ir_node *body_block;
3885 if (statement->body != NULL) {
3886 ir_node *old_continue_label = continue_label;
3887 ir_node *old_break_label = break_label;
3888 continue_label = header_block;
3889 break_label = false_block;
3891 body_block = new_immBlock();
3892 statement_to_firm(statement->body);
3894 assert(continue_label == header_block);
3895 assert(break_label == false_block);
3896 continue_label = old_continue_label;
3897 break_label = old_break_label;
3899 if(get_cur_block() != NULL) {
3901 add_immBlock_pred(header_block, jmp);
3904 body_block = header_block;
3907 /* create the condition */
3908 set_cur_block(header_block);
3910 create_condition_evaluation(statement->condition, body_block, false_block);
3911 mature_immBlock(body_block);
3912 mature_immBlock(false_block);
3913 mature_immBlock(header_block);
3915 set_cur_block(false_block);
3918 static void do_while_statement_to_firm(do_while_statement_t *statement)
3920 ir_node *jmp = NULL;
3921 if(get_cur_block() != NULL) {
3925 /* create the header block */
3926 ir_node *header_block = new_immBlock();
3928 /* the false block */
3929 ir_node *false_block = new_immBlock();
3932 ir_node *body_block = new_immBlock();
3934 add_immBlock_pred(body_block, jmp);
3937 if (statement->body != NULL) {
3938 ir_node *old_continue_label = continue_label;
3939 ir_node *old_break_label = break_label;
3940 continue_label = header_block;
3941 break_label = false_block;
3943 statement_to_firm(statement->body);
3945 assert(continue_label == header_block);
3946 assert(break_label == false_block);
3947 continue_label = old_continue_label;
3948 break_label = old_break_label;
3950 if (get_cur_block() == NULL) {
3951 mature_immBlock(header_block);
3952 mature_immBlock(body_block);
3953 mature_immBlock(false_block);
3958 ir_node *body_jmp = new_Jmp();
3959 add_immBlock_pred(header_block, body_jmp);
3960 mature_immBlock(header_block);
3962 /* create the condition */
3963 set_cur_block(header_block);
3965 create_condition_evaluation(statement->condition, body_block, false_block);
3966 mature_immBlock(body_block);
3967 mature_immBlock(false_block);
3968 mature_immBlock(header_block);
3970 set_cur_block(false_block);
3973 static void for_statement_to_firm(for_statement_t *statement)
3975 ir_node *jmp = NULL;
3976 if (get_cur_block() != NULL) {
3977 if(statement->initialisation != NULL) {
3978 expression_to_firm(statement->initialisation);
3981 /* create declarations */
3982 declaration_t *declaration = statement->scope.declarations;
3983 for( ; declaration != NULL; declaration = declaration->next) {
3984 create_local_declaration(declaration);
3991 /* create the step block */
3992 ir_node *const step_block = new_immBlock();
3993 if (statement->step != NULL) {
3994 expression_to_firm(statement->step);
3996 ir_node *const step_jmp = new_Jmp();
3998 /* create the header block */
3999 ir_node *const header_block = new_immBlock();
4001 add_immBlock_pred(header_block, jmp);
4003 add_immBlock_pred(header_block, step_jmp);
4005 /* the false block */
4006 ir_node *const false_block = new_immBlock();
4009 ir_node * body_block;
4010 if (statement->body != NULL) {
4011 ir_node *const old_continue_label = continue_label;
4012 ir_node *const old_break_label = break_label;
4013 continue_label = step_block;
4014 break_label = false_block;
4016 body_block = new_immBlock();
4017 statement_to_firm(statement->body);
4019 assert(continue_label == step_block);
4020 assert(break_label == false_block);
4021 continue_label = old_continue_label;
4022 break_label = old_break_label;
4024 if (get_cur_block() != NULL) {
4026 add_immBlock_pred(step_block, jmp);
4029 body_block = step_block;
4032 /* create the condition */
4033 set_cur_block(header_block);
4034 if (statement->condition != NULL) {
4035 create_condition_evaluation(statement->condition, body_block,
4038 keep_alive(header_block);
4040 add_immBlock_pred(body_block, jmp);
4043 mature_immBlock(body_block);
4044 mature_immBlock(false_block);
4045 mature_immBlock(step_block);
4046 mature_immBlock(header_block);
4047 mature_immBlock(false_block);
4049 set_cur_block(false_block);
4052 static void create_jump_statement(const statement_t *statement,
4053 ir_node *target_block)
4055 if(get_cur_block() == NULL)
4058 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4059 ir_node *jump = new_d_Jmp(dbgi);
4060 add_immBlock_pred(target_block, jump);
4062 set_cur_block(NULL);
4065 static void switch_statement_to_firm(const switch_statement_t *statement)
4067 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4069 ir_node *expression = expression_to_firm(statement->expression);
4070 ir_node *cond = new_d_Cond(dbgi, expression);
4071 ir_node *break_block = new_immBlock();
4073 set_cur_block(NULL);
4075 ir_node *const old_switch_cond = current_switch_cond;
4076 ir_node *const old_break_label = break_label;
4077 const bool old_saw_default_label = saw_default_label;
4078 current_switch_cond = cond;
4079 break_label = break_block;
4081 if (statement->body != NULL) {
4082 statement_to_firm(statement->body);
4085 if(get_cur_block() != NULL) {
4086 ir_node *jmp = new_Jmp();
4087 add_immBlock_pred(break_block, jmp);
4090 if (!saw_default_label) {
4091 set_cur_block(get_nodes_block(cond));
4092 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4093 MAGIC_DEFAULT_PN_NUMBER);
4094 add_immBlock_pred(break_block, proj);
4097 assert(current_switch_cond == cond);
4098 assert(break_label == break_block);
4099 current_switch_cond = old_switch_cond;
4100 break_label = old_break_label;
4101 saw_default_label = old_saw_default_label;
4103 mature_immBlock(break_block);
4104 set_cur_block(break_block);
4107 static void case_label_to_firm(const case_label_statement_t *statement)
4109 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4111 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4113 /* let's create a node and hope firm constant folding creates a Const
4116 ir_node *old_block = get_nodes_block(current_switch_cond);
4117 ir_node *block = new_immBlock();
4119 set_cur_block(old_block);
4120 if(statement->expression != NULL) {
4121 long start_pn = fold_constant(statement->expression);
4122 long end_pn = start_pn;
4123 if (statement->end_range != NULL) {
4124 end_pn = fold_constant(statement->end_range);
4126 assert(start_pn <= end_pn);
4127 /* create jumps for all cases in the given range */
4128 for (long pn = start_pn; pn <= end_pn; ++pn) {
4129 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4130 /* oops someone detected our cheating... */
4131 panic("magic default pn used");
4133 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4134 add_immBlock_pred(block, proj);
4137 saw_default_label = true;
4138 proj = new_d_defaultProj(dbgi, current_switch_cond,
4139 MAGIC_DEFAULT_PN_NUMBER);
4141 add_immBlock_pred(block, proj);
4144 if (fallthrough != NULL) {
4145 add_immBlock_pred(block, fallthrough);
4147 mature_immBlock(block);
4148 set_cur_block(block);
4150 if(statement->statement != NULL) {
4151 statement_to_firm(statement->statement);
4155 static ir_node *get_label_block(declaration_t *label)
4157 assert(label->namespc == NAMESPACE_LABEL);
4159 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4160 return label->v.block;
4162 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4164 ir_node *old_cur_block = get_cur_block();
4165 ir_node *block = new_immBlock();
4166 set_cur_block(old_cur_block);
4168 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4169 label->v.block = block;
4171 ARR_APP1(ir_node *, imature_blocks, block);
4176 static void label_to_firm(const label_statement_t *statement)
4178 ir_node *block = get_label_block(statement->label);
4180 if(get_cur_block() != NULL) {
4181 ir_node *jmp = new_Jmp();
4182 add_immBlock_pred(block, jmp);
4185 set_cur_block(block);
4188 if(statement->statement != NULL) {
4189 statement_to_firm(statement->statement);
4193 static void goto_to_firm(const goto_statement_t *statement)
4195 if(get_cur_block() == NULL)
4198 ir_node *block = get_label_block(statement->label);
4199 ir_node *jmp = new_Jmp();
4200 add_immBlock_pred(block, jmp);
4202 set_cur_block(NULL);
4205 typedef enum modifier_t {
4206 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4207 ASM_MODIFIER_READ_WRITE = 1 << 1,
4208 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4209 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4212 static void asm_statement_to_firm(const asm_statement_t *statement)
4215 fprintf(stderr, "WARNING asm not implemented yet!\n");
4217 bool needs_memory = false;
4219 size_t n_clobbers = 0;
4220 asm_clobber_t *clobber = statement->clobbers;
4221 for( ; clobber != NULL; clobber = clobber->next) {
4222 if(strcmp(clobber->clobber, "memory") == 0) {
4223 needs_memory = true;
4227 ident *id = new_id_from_str(clobber->clobber);
4228 obstack_ptr_grow(&asm_obst, id);
4231 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4232 ident **clobbers = NULL;
4233 if(n_clobbers > 0) {
4234 clobbers = obstack_finish(&asm_obst);
4237 /* find and count input and output constraints */
4238 asm_constraint_t *constraint = statement->inputs;
4239 for( ; constraint != NULL; constraint = constraint->next) {
4241 bool supports_memop = false;
4242 for(const char *c = constraint->constraints; *c != 0; ++c) {
4243 /* TODO: improve error messages */
4247 panic("multiple alternative assembler constraints not "
4255 supports_memop = true;
4256 obstack_1grow(&asm_obst, *c);
4259 if(modifiers & ASM_MODIFIER_READ_WRITE)
4260 panic("inconsistent register constraints");
4261 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4264 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4265 panic("inconsistent register constraints");
4266 modifiers |= ASM_MODIFIER_READ_WRITE;
4269 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4270 panic("early clobber assembler constraint not supported yet");
4273 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4274 panic("commutative assembler constraint not supported yet");
4277 /* skip register preferences stuff... */
4278 while(*c != 0 && *c != ',')
4282 /* skip register preferences stuff... */
4286 obstack_1grow(&asm_obst, *c);
4290 obstack_1grow(&asm_obst, '\0');
4291 const char *constraint_string = obstack_finish(&asm_obst);
4293 needs_memory |= supports_memop;
4294 if(supports_memop) {
4301 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4302 statement_to_firm(statement->try_statement);
4303 warningf(&statement->base.source_position, "structured exception handling ignored");
4306 static void leave_statement_to_firm(leave_statement_t *statement) {
4307 errorf(&statement->base.source_position, "__leave not supported yet");
4310 static void statement_to_firm(statement_t *statement)
4312 switch(statement->kind) {
4313 case STATEMENT_INVALID:
4314 panic("invalid statement found");
4316 case STATEMENT_EMPTY:
4319 case STATEMENT_COMPOUND:
4320 compound_statement_to_firm(&statement->compound);
4322 case STATEMENT_RETURN:
4323 return_statement_to_firm(&statement->returns);
4325 case STATEMENT_EXPRESSION:
4326 expression_statement_to_firm(&statement->expression);
4329 if_statement_to_firm(&statement->ifs);
4331 case STATEMENT_WHILE:
4332 while_statement_to_firm(&statement->whiles);
4334 case STATEMENT_DO_WHILE:
4335 do_while_statement_to_firm(&statement->do_while);
4337 case STATEMENT_DECLARATION:
4338 declaration_statement_to_firm(&statement->declaration);
4340 case STATEMENT_BREAK:
4341 create_jump_statement(statement, break_label);
4343 case STATEMENT_CONTINUE:
4344 create_jump_statement(statement, continue_label);
4346 case STATEMENT_SWITCH:
4347 switch_statement_to_firm(&statement->switchs);
4349 case STATEMENT_CASE_LABEL:
4350 case_label_to_firm(&statement->case_label);
4353 for_statement_to_firm(&statement->fors);
4355 case STATEMENT_LABEL:
4356 label_to_firm(&statement->label);
4358 case STATEMENT_GOTO:
4359 goto_to_firm(&statement->gotos);
4362 asm_statement_to_firm(&statement->asms);
4364 case STATEMENT_MS_TRY:
4365 ms_try_statement_to_firm(&statement->ms_try);
4367 case STATEMENT_LEAVE:
4368 leave_statement_to_firm(&statement->leave);
4371 panic("Statement not implemented\n");
4374 static int count_decls_in_expression(const expression_t *expression);
4376 static int count_local_declarations(const declaration_t * decl,
4377 const declaration_t *const end)
4380 for (; decl != end; decl = decl->next) {
4381 if(decl->namespc != NAMESPACE_NORMAL)
4383 const type_t *type = skip_typeref(decl->type);
4384 if (!decl->address_taken && is_type_scalar(type))
4386 const initializer_t *initializer = decl->init.initializer;
4387 /* FIXME: should walk initializer hierarchies... */
4388 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4389 count += count_decls_in_expression(initializer->value.value);
4395 static int count_decls_in_expression(const expression_t *expression) {
4398 if(expression == NULL)
4401 switch((expression_kind_t) expression->base.kind) {
4402 case EXPR_STATEMENT:
4403 return count_decls_in_stmts(expression->statement.statement);
4405 int count_left = count_decls_in_expression(expression->binary.left);
4406 int count_right = count_decls_in_expression(expression->binary.right);
4407 return count_left + count_right;
4410 return count_decls_in_expression(expression->unary.value);
4412 call_argument_t *argument = expression->call.arguments;
4413 for( ; argument != NULL; argument = argument->next) {
4414 count += count_decls_in_expression(argument->expression);
4421 panic("unexpected expression kind");
4423 case EXPR_COMPOUND_LITERAL:
4427 case EXPR_CONDITIONAL:
4428 count += count_decls_in_expression(expression->conditional.condition);
4429 count += count_decls_in_expression(expression->conditional.true_expression);
4430 count += count_decls_in_expression(expression->conditional.false_expression);
4433 case EXPR_BUILTIN_PREFETCH:
4434 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4435 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4436 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4439 case EXPR_BUILTIN_CONSTANT_P:
4440 count += count_decls_in_expression(expression->builtin_constant.value);
4444 count += count_decls_in_expression(expression->select.compound);
4447 case EXPR_ARRAY_ACCESS:
4448 count += count_decls_in_expression(expression->array_access.array_ref);
4449 count += count_decls_in_expression(expression->array_access.index);
4452 case EXPR_CLASSIFY_TYPE:
4453 count += count_decls_in_expression(expression->classify_type.type_expression);
4457 case EXPR_ALIGNOF: {
4458 expression_t *tp_expression = expression->typeprop.tp_expression;
4459 if (tp_expression != NULL) {
4460 count += count_decls_in_expression(tp_expression);
4466 case EXPR_REFERENCE:
4468 case EXPR_CHARACTER_CONSTANT:
4469 case EXPR_WIDE_CHARACTER_CONSTANT:
4470 case EXPR_STRING_LITERAL:
4471 case EXPR_WIDE_STRING_LITERAL:
4473 case EXPR_BUILTIN_SYMBOL:
4479 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4480 * (or implement all the missing expressions here/implement a walker)
4486 static int count_decls_in_stmts(const statement_t *stmt)
4489 for (; stmt != NULL; stmt = stmt->base.next) {
4490 switch (stmt->kind) {
4491 case STATEMENT_EMPTY:
4494 case STATEMENT_DECLARATION: {
4495 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4496 count += count_local_declarations(decl_stmt->declarations_begin,
4497 decl_stmt->declarations_end->next);
4501 case STATEMENT_COMPOUND: {
4502 const compound_statement_t *const comp =
4504 count += count_decls_in_stmts(comp->statements);
4508 case STATEMENT_IF: {
4509 const if_statement_t *const if_stmt = &stmt->ifs;
4510 count += count_decls_in_expression(if_stmt->condition);
4511 count += count_decls_in_stmts(if_stmt->true_statement);
4512 count += count_decls_in_stmts(if_stmt->false_statement);
4516 case STATEMENT_SWITCH: {
4517 const switch_statement_t *const switch_stmt = &stmt->switchs;
4518 count += count_decls_in_expression(switch_stmt->expression);
4519 count += count_decls_in_stmts(switch_stmt->body);
4523 case STATEMENT_LABEL: {
4524 const label_statement_t *const label_stmt = &stmt->label;
4525 if(label_stmt->statement != NULL) {
4526 count += count_decls_in_stmts(label_stmt->statement);
4531 case STATEMENT_WHILE: {
4532 const while_statement_t *const while_stmt = &stmt->whiles;
4533 count += count_decls_in_expression(while_stmt->condition);
4534 count += count_decls_in_stmts(while_stmt->body);
4538 case STATEMENT_DO_WHILE: {
4539 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4540 count += count_decls_in_expression(do_while_stmt->condition);
4541 count += count_decls_in_stmts(do_while_stmt->body);
4545 case STATEMENT_FOR: {
4546 const for_statement_t *const for_stmt = &stmt->fors;
4547 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4548 count += count_decls_in_expression(for_stmt->initialisation);
4549 count += count_decls_in_expression(for_stmt->condition);
4550 count += count_decls_in_expression(for_stmt->step);
4551 count += count_decls_in_stmts(for_stmt->body);
4555 case STATEMENT_CASE_LABEL: {
4556 const case_label_statement_t *label = &stmt->case_label;
4557 count += count_decls_in_expression(label->expression);
4558 if(label->statement != NULL) {
4559 count += count_decls_in_stmts(label->statement);
4565 case STATEMENT_BREAK:
4566 case STATEMENT_CONTINUE:
4569 case STATEMENT_EXPRESSION: {
4570 const expression_statement_t *expr_stmt = &stmt->expression;
4571 count += count_decls_in_expression(expr_stmt->expression);
4575 case STATEMENT_GOTO:
4576 case STATEMENT_LEAVE:
4577 case STATEMENT_INVALID:
4580 case STATEMENT_RETURN: {
4581 const return_statement_t *ret_stmt = &stmt->returns;
4582 count += count_decls_in_expression(ret_stmt->value);
4586 case STATEMENT_MS_TRY: {
4587 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4588 count += count_decls_in_stmts(try_stmt->try_statement);
4589 if(try_stmt->except_expression != NULL)
4590 count += count_decls_in_expression(try_stmt->except_expression);
4591 count += count_decls_in_stmts(try_stmt->final_statement);
4599 static int get_function_n_local_vars(declaration_t *declaration)
4603 /* count parameters */
4604 count += count_local_declarations(declaration->scope.declarations, NULL);
4606 /* count local variables declared in body */
4607 count += count_decls_in_stmts(declaration->init.statement);
4612 static void initialize_function_parameters(declaration_t *declaration)
4614 ir_graph *irg = current_ir_graph;
4615 ir_node *args = get_irg_args(irg);
4616 ir_node *start_block = get_irg_start_block(irg);
4617 ir_type *function_irtype = get_ir_type(declaration->type);
4620 declaration_t *parameter = declaration->scope.declarations;
4621 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4622 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4623 type_t *type = skip_typeref(parameter->type);
4625 bool needs_entity = parameter->address_taken;
4626 assert(!is_type_array(type));
4627 if(is_type_compound(type)) {
4628 needs_entity = true;
4632 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4633 ident *id = new_id_from_str(parameter->symbol->string);
4634 set_entity_ident(entity, id);
4636 parameter->declaration_kind
4637 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4638 parameter->v.entity = entity;
4642 ir_mode *mode = get_ir_mode(parameter->type);
4644 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4646 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4647 parameter->v.value_number = next_value_number_function;
4648 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4649 ++next_value_number_function;
4651 set_value(parameter->v.value_number, proj);
4656 * Handle additional decl modifiers for IR-graphs
4658 * @param irg the IR-graph
4659 * @param dec_modifiers additional modifiers
4661 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4663 if (decl_modifiers & DM_NORETURN) {
4664 /* TRUE if the declaration includes the Microsoft
4665 __declspec(noreturn) specifier. */
4666 set_irg_additional_property(irg, mtp_property_noreturn);
4668 if (decl_modifiers & DM_NOTHROW) {
4669 /* TRUE if the declaration includes the Microsoft
4670 __declspec(nothrow) specifier. */
4671 set_irg_additional_property(irg, mtp_property_nothrow);
4673 if (decl_modifiers & DM_NAKED) {
4674 /* TRUE if the declaration includes the Microsoft
4675 __declspec(naked) specifier. */
4676 set_irg_additional_property(irg, mtp_property_naked);
4678 if (decl_modifiers & DM_FORCEINLINE) {
4679 /* TRUE if the declaration includes the
4680 Microsoft __forceinline specifier. */
4681 set_irg_inline_property(irg, irg_inline_forced);
4683 if (decl_modifiers & DM_NOINLINE) {
4684 /* TRUE if the declaration includes the Microsoft
4685 __declspec(noinline) specifier. */
4686 set_irg_inline_property(irg, irg_inline_forbidden);
4690 static void create_function(declaration_t *declaration)
4692 ir_entity *function_entity = get_function_entity(declaration);
4694 if(declaration->init.statement == NULL)
4697 current_function_decl = declaration;
4698 current_function_name = NULL;
4699 current_funcsig = NULL;
4701 assert(imature_blocks == NULL);
4702 imature_blocks = NEW_ARR_F(ir_node*, 0);
4704 int n_local_vars = get_function_n_local_vars(declaration);
4705 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4707 set_irg_fp_model(irg, firm_opt.fp_model);
4708 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4709 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4711 ir_node *first_block = get_cur_block();
4713 /* set inline flags */
4714 if (declaration->is_inline)
4715 set_irg_inline_property(irg, irg_inline_recomended);
4716 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4718 next_value_number_function = 0;
4719 initialize_function_parameters(declaration);
4721 statement_to_firm(declaration->init.statement);
4723 ir_node *end_block = get_irg_end_block(irg);
4725 /* do we have a return statement yet? */
4726 if(get_cur_block() != NULL) {
4727 type_t *type = skip_typeref(declaration->type);
4728 assert(is_type_function(type));
4729 const function_type_t *func_type = &type->function;
4730 const type_t *return_type
4731 = skip_typeref(func_type->return_type);
4734 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4735 ret = new_Return(get_store(), 0, NULL);
4738 if(is_type_scalar(return_type)) {
4739 mode = get_ir_mode(func_type->return_type);
4745 /* ยง5.1.2.2.3 main implicitly returns 0 */
4746 if (strcmp(declaration->symbol->string, "main") == 0) {
4747 in[0] = new_Const(mode, get_mode_null(mode));
4749 in[0] = new_Unknown(mode);
4751 ret = new_Return(get_store(), 1, in);
4753 add_immBlock_pred(end_block, ret);
4756 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4757 mature_immBlock(imature_blocks[i]);
4759 DEL_ARR_F(imature_blocks);
4760 imature_blocks = NULL;
4762 mature_immBlock(first_block);
4763 mature_immBlock(end_block);
4765 irg_finalize_cons(irg);
4767 /* finalize the frame type */
4768 ir_type *frame_type = get_irg_frame_type(irg);
4769 int n = get_compound_n_members(frame_type);
4772 for(int i = 0; i < n; ++i) {
4773 ir_entity *entity = get_compound_member(frame_type, i);
4774 ir_type *entity_type = get_entity_type(entity);
4776 int align = get_type_alignment_bytes(entity_type);
4777 if(align > align_all)
4781 misalign = offset % align;
4783 offset += align - misalign;
4787 set_entity_offset(entity, offset);
4788 offset += get_type_size_bytes(entity_type);
4790 set_type_size_bytes(frame_type, offset);
4791 set_type_alignment_bytes(frame_type, align_all);
4796 static void scope_to_firm(scope_t *scope)
4798 /* first pass: create declarations */
4799 declaration_t *declaration = scope->declarations;
4800 for( ; declaration != NULL; declaration = declaration->next) {
4801 if(declaration->namespc != NAMESPACE_NORMAL)
4803 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4804 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4806 if(declaration->symbol == NULL)
4809 type_t *type = skip_typeref(declaration->type);
4810 if(is_type_function(type)) {
4811 get_function_entity(declaration);
4813 create_global_variable(declaration);
4817 /* second pass: create code/initializers */
4818 declaration = scope->declarations;
4819 for( ; declaration != NULL; declaration = declaration->next) {
4820 if(declaration->namespc != NAMESPACE_NORMAL)
4822 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4823 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4825 if(declaration->symbol == NULL)
4828 type_t *type = declaration->type;
4829 if(type->kind == TYPE_FUNCTION) {
4830 create_function(declaration);
4832 assert(declaration->declaration_kind
4833 == DECLARATION_KIND_GLOBAL_VARIABLE);
4834 current_ir_graph = get_const_code_irg();
4835 create_declaration_initializer(declaration);
4840 void init_ast2firm(void)
4842 obstack_init(&asm_obst);
4843 init_atomic_modes();
4845 id_underscore = new_id_from_chars("_", 1);
4846 id_imp = new_id_from_chars("__imp_", 6);
4848 /* OS option must be set to the backend */
4849 const char *s = "ia32-gasmode=linux";
4850 switch (firm_opt.os_support) {
4851 case OS_SUPPORT_WIN32:
4852 create_ld_ident = create_ld_ident_win32;
4853 s = "ia32-gasmode=mingw";
4855 case OS_SUPPORT_LINUX:
4856 create_ld_ident = create_ld_ident_linux_elf;
4857 s = "ia32-gasmode=linux"; break;
4859 case OS_SUPPORT_MACHO:
4860 create_ld_ident = create_ld_ident_macho;
4861 s = "ia32-gasmode=macho"; break;
4866 /* create idents for all known runtime functions */
4867 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4868 predef_idents[rts_data[i].id] = new_id_from_str(rts_data[i].name);
4872 static void init_ir_types(void)
4874 static int ir_types_initialized = 0;
4875 if(ir_types_initialized)
4877 ir_types_initialized = 1;
4879 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4880 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4881 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4883 ir_type_int = get_ir_type(type_int);
4884 ir_type_const_char = get_ir_type(type_const_char);
4885 ir_type_wchar_t = get_ir_type(type_wchar_t);
4886 ir_type_void = get_ir_type(type_void);
4889 void exit_ast2firm(void)
4891 obstack_free(&asm_obst, NULL);
4894 void translation_unit_to_firm(translation_unit_t *unit)
4896 /* just to be sure */
4897 continue_label = NULL;
4899 current_switch_cond = NULL;
4903 scope_to_firm(&unit->scope);