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 ir_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 ir_mode_sort sort = irms_reference;
179 unsigned bit_size = machine_size;
181 ir_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 /** Names of the runtime functions. */
818 static const struct {
819 int id; /**< the rts id */
820 int n_res; /**< number of return values */
821 const char *name; /**< the name of the rts function */
822 int n_params; /**< number of parameters */
823 unsigned flags; /**< language flags */
825 { rts_debugbreak, 0, "__debugbreak", 0, _MS },
826 { rts_abort, 0, "abort", 0, _C89 },
827 { rts_alloca, 1, "alloca", 1, _GNUC },
828 { rts_abs, 1, "abs", 1, _C89 },
829 { rts_labs, 1, "labs", 1, _C89 },
830 { rts_llabs, 1, "llabs", 1, _C99 },
831 { rts_imaxabs, 1, "imaxabs", 1, _C99 },
833 { rts_fabs, 1, "fabs", 1, _C89 },
834 { rts_sqrt, 1, "sqrt", 1, _C89 },
835 { rts_cbrt, 1, "cbrt", 1, _C99 },
836 { rts_exp, 1, "exp", 1, _C89 },
837 { rts_exp2, 1, "exp2", 1, _C89 },
838 { rts_exp10, 1, "exp10", 1, _GNUC },
839 { rts_log, 1, "log", 1, _C89 },
840 { rts_log2, 1, "log2", 1, _C89 },
841 { rts_log10, 1, "log10", 1, _C89 },
842 { rts_pow, 1, "pow", 2, _C89 },
843 { rts_sin, 1, "sin", 1, _C89 },
844 { rts_cos, 1, "cos", 1, _C89 },
845 { rts_tan, 1, "tan", 1, _C89 },
846 { rts_asin, 1, "asin", 1, _C89 },
847 { rts_acos, 1, "acos", 1, _C89 },
848 { rts_atan, 1, "atan", 1, _C89 },
849 { rts_sinh, 1, "sinh", 1, _C89 },
850 { rts_cosh, 1, "cosh", 1, _C89 },
851 { rts_tanh, 1, "tanh", 1, _C89 },
853 { rts_fabsf, 1, "fabsf", 1, _C99 },
854 { rts_sqrtf, 1, "sqrtf", 1, _C99 },
855 { rts_cbrtf, 1, "cbrtf", 1, _C99 },
856 { rts_expf, 1, "expf", 1, _C99 },
857 { rts_exp2f, 1, "exp2f", 1, _C99 },
858 { rts_exp10f, 1, "exp10f", 1, _GNUC },
859 { rts_logf, 1, "logf", 1, _C99 },
860 { rts_log2f, 1, "log2f", 1, _C99 },
861 { rts_log10f, 1, "log10f", 1, _C99 },
862 { rts_powf, 1, "powf", 2, _C99 },
863 { rts_sinf, 1, "sinf", 1, _C99 },
864 { rts_cosf, 1, "cosf", 1, _C99 },
865 { rts_tanf, 1, "tanf", 1, _C99 },
866 { rts_asinf, 1, "asinf", 1, _C99 },
867 { rts_acosf, 1, "acosf", 1, _C99 },
868 { rts_atanf, 1, "atanf", 1, _C99 },
869 { rts_sinhf, 1, "sinhf", 1, _C99 },
870 { rts_coshf, 1, "coshf", 1, _C99 },
871 { rts_tanhf, 1, "tanhf", 1, _C99 },
873 { rts_fabsl, 1, "fabsl", 1, _C99 },
874 { rts_sqrtl, 1, "sqrtl", 1, _C99 },
875 { rts_cbrtl, 1, "cbrtl", 1, _C99 },
876 { rts_expl, 1, "expl", 1, _C99 },
877 { rts_exp2l, 1, "exp2l", 1, _C99 },
878 { rts_exp10l, 1, "exp10l", 1, _GNUC },
879 { rts_logl, 1, "logl", 1, _C99 },
880 { rts_log2l, 1, "log2l", 1, _C99 },
881 { rts_log10l, 1, "log10l", 1, _C99 },
882 { rts_powl, 1, "powl", 2, _C99 },
883 { rts_sinl, 1, "sinl", 1, _C99 },
884 { rts_cosl, 1, "cosl", 1, _C99 },
885 { rts_tanl, 1, "tanl", 1, _C99 },
886 { rts_asinl, 1, "asinl", 1, _C99 },
887 { rts_acosl, 1, "acosl", 1, _C99 },
888 { rts_atanl, 1, "atanl", 1, _C99 },
889 { rts_sinhl, 1, "sinhl", 1, _C99 },
890 { rts_coshl, 1, "coshl", 1, _C99 },
891 { rts_tanhl, 1, "tanhl", 1, _C99 },
893 { rts_memcpy, 1, "memcpy", 3, _C89 }, /* HMM, man say its C99 */
894 { rts_memset, 1, "memset", 3, _C89 }, /* HMM, man say its C99 */
895 { rts_strcmp, 1, "strcmp", 2, _C89 },
896 { rts_strncmp, 1, "strncmp", 3, _C89 }
899 static ident *rts_idents[sizeof(rts_data) / sizeof(rts_data[0])];
902 * Mangles an entity linker (ld) name for win32 usage.
904 * @param ent the entity to be mangled
905 * @param declaration the declaration
907 static ident *create_ld_ident_win32(ir_entity *ent, declaration_t *declaration)
911 if (is_Method_type(get_entity_type(ent)))
912 id = decorate_win32_c_fkt(ent, get_entity_ident(ent));
914 /* always add an underscore in win32 */
915 id = mangle(id_underscore, get_entity_ident(ent));
918 decl_modifiers_t decl_modifiers = declaration->decl_modifiers;
919 if (decl_modifiers & DM_DLLIMPORT) {
920 /* add prefix for imported symbols */
921 id = mangle(id_imp, id);
927 * Mangles an entity linker (ld) name for Linux ELF usage.
929 * @param ent the entity to be mangled
930 * @param declaration the declaration
932 static ident *create_ld_ident_linux_elf(ir_entity *entity,
933 declaration_t *declaration)
936 return get_entity_ident(entity);
940 * Mangles an entity linker (ld) name for Mach-O usage.
942 * @param ent the entity to be mangled
943 * @param declaration the declaration
945 static ident *create_ld_ident_macho(ir_entity *ent, declaration_t *declaration)
948 ident *id = mangle(id_underscore, get_entity_ident(ent));
952 typedef ident* (*create_ld_ident_func)(ir_entity *entity,
953 declaration_t *declaration);
954 create_ld_ident_func create_ld_ident = create_ld_ident_linux_elf;
956 static ir_entity* get_function_entity(declaration_t *declaration)
958 if(declaration->declaration_kind == DECLARATION_KIND_FUNCTION)
959 return declaration->v.entity;
960 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
962 symbol_t *symbol = declaration->symbol;
963 ident *id = new_id_from_str(symbol->string);
965 ir_type *global_type = get_glob_type();
966 ir_type *ir_type_method = get_ir_type(declaration->type);
967 assert(is_Method_type(ir_type_method));
969 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
970 ir_entity *const entity = new_d_entity(global_type, id, ir_type_method, dbgi);
971 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
972 if(declaration->storage_class == STORAGE_CLASS_STATIC &&
973 declaration->init.statement == NULL) {
974 /* this entity was declared, but never defined */
975 set_entity_peculiarity(entity, peculiarity_description);
977 if(declaration->storage_class == STORAGE_CLASS_STATIC
978 || declaration->is_inline) {
979 set_entity_visibility(entity, visibility_local);
980 } else if(declaration->init.statement != NULL) {
981 set_entity_visibility(entity, visibility_external_visible);
983 set_entity_visibility(entity, visibility_external_allocated);
985 set_entity_allocation(entity, allocation_static);
987 declaration->declaration_kind = DECLARATION_KIND_FUNCTION;
988 declaration->v.entity = entity;
990 /* We should check for file scope here, but as long as we compile C only
991 this is not needed. */
992 if (! firm_opt.freestanding) {
993 /* check for a known runtime function */
994 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
995 if (id != rts_idents[i])
998 /* ignore those rts functions not necessary needed for current mode */
999 if ((c_mode & rts_data[i].flags) == 0)
1001 rts_entities[rts_data[i].id] = entity;
1008 static ir_node *const_to_firm(const const_expression_t *cnst)
1010 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1011 ir_mode *mode = get_ir_mode(cnst->base.type);
1016 if(mode_is_float(mode)) {
1017 tv = new_tarval_from_double(cnst->v.float_value, mode);
1019 if(mode_is_signed(mode)) {
1020 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
1022 len = snprintf(buf, sizeof(buf), "%llu",
1023 (unsigned long long) cnst->v.int_value);
1025 tv = new_tarval_from_str(buf, len, mode);
1028 return new_d_Const(dbgi, mode, tv);
1031 static ir_node *character_constant_to_firm(const const_expression_t *cnst)
1033 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1034 ir_mode *mode = get_ir_mode(cnst->base.type);
1036 long long int v = 0;
1037 for (size_t i = 0; i < cnst->v.character.size; ++i) {
1038 if (char_is_signed) {
1039 v = (v << 8) | ((signed char)cnst->v.character.begin[i]);
1041 v = (v << 8) | ((unsigned char)cnst->v.character.begin[i]);
1045 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1046 tarval *tv = new_tarval_from_str(buf, len, mode);
1048 return new_d_Const(dbgi, mode, tv);
1051 static ir_node *wide_character_constant_to_firm(const const_expression_t *cnst)
1053 dbg_info *dbgi = get_dbg_info(&cnst->base.source_position);
1054 ir_mode *mode = get_ir_mode(cnst->base.type);
1056 long long int v = cnst->v.wide_character.begin[0];
1059 size_t len = snprintf(buf, sizeof(buf), "%lld", v);
1060 tarval *tv = new_tarval_from_str(buf, len, mode);
1062 return new_d_Const(dbgi, mode, tv);
1065 static ir_node *create_symconst(dbg_info *dbgi, ir_mode *mode,
1068 assert(entity != NULL);
1069 union symconst_symbol sym;
1070 sym.entity_p = entity;
1071 return new_d_SymConst(dbgi, mode, sym, symconst_addr_ent);
1074 static ir_node *string_to_firm(const source_position_t *const src_pos,
1075 const char *const id_prefix,
1076 const string_t *const value)
1078 ir_type *const global_type = get_glob_type();
1079 dbg_info *const dbgi = get_dbg_info(src_pos);
1080 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1081 ir_type_const_char, dbgi);
1083 ident *const id = id_unique(id_prefix);
1084 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1085 set_entity_ld_ident(entity, id);
1086 set_entity_variability(entity, variability_constant);
1087 set_entity_allocation(entity, allocation_static);
1089 ir_type *const elem_type = ir_type_const_char;
1090 ir_mode *const mode = get_type_mode(elem_type);
1092 const char* const string = value->begin;
1093 const size_t slen = value->size;
1095 set_array_lower_bound_int(type, 0, 0);
1096 set_array_upper_bound_int(type, 0, slen);
1097 set_type_size_bytes(type, slen);
1098 set_type_state(type, layout_fixed);
1100 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1101 for(size_t i = 0; i < slen; ++i) {
1102 tvs[i] = new_tarval_from_long(string[i], mode);
1105 set_array_entity_values(entity, tvs, slen);
1108 return create_symconst(dbgi, mode_P_data, entity);
1111 static ir_node *string_literal_to_firm(
1112 const string_literal_expression_t* literal)
1114 return string_to_firm(&literal->base.source_position, "Lstr.%u",
1118 static ir_node *wide_string_literal_to_firm(
1119 const wide_string_literal_expression_t* const literal)
1121 ir_type *const global_type = get_glob_type();
1122 ir_type *const elem_type = ir_type_wchar_t;
1123 dbg_info *const dbgi = get_dbg_info(&literal->base.source_position);
1124 ir_type *const type = new_d_type_array(id_unique("strtype.%u"), 1,
1127 ident *const id = id_unique("Lstr.%u");
1128 ir_entity *const entity = new_d_entity(global_type, id, type, dbgi);
1129 set_entity_ld_ident(entity, id);
1130 set_entity_variability(entity, variability_constant);
1131 set_entity_allocation(entity, allocation_static);
1133 ir_mode *const mode = get_type_mode(elem_type);
1135 const wchar_rep_t *const string = literal->value.begin;
1136 const size_t slen = literal->value.size;
1138 set_array_lower_bound_int(type, 0, 0);
1139 set_array_upper_bound_int(type, 0, slen);
1140 set_type_size_bytes(type, slen);
1141 set_type_state(type, layout_fixed);
1143 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
1144 for(size_t i = 0; i < slen; ++i) {
1145 tvs[i] = new_tarval_from_long(string[i], mode);
1148 set_array_entity_values(entity, tvs, slen);
1151 return create_symconst(dbgi, mode_P_data, entity);
1154 static ir_node *deref_address(type_t *const type, ir_node *const addr,
1155 dbg_info *const dbgi)
1157 ir_type *irtype = get_ir_type(type);
1158 if (is_compound_type(irtype)
1159 || is_Method_type(irtype)
1160 || is_Array_type(irtype)) {
1164 ir_mode *const mode = get_type_mode(irtype);
1165 ir_node *const memory = get_store();
1166 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
1167 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1168 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1170 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1171 set_Load_volatility(load, volatility_is_volatile);
1174 set_store(load_mem);
1178 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
1180 ir_mode *mode = get_irn_mode(node);
1182 if (!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
1184 if (!mode_is_float(mode))
1187 /* check if there is already a Conv */
1188 if (get_irn_op(node) == op_Conv) {
1189 /* convert it into a strict Conv */
1190 set_Conv_strict(node, 1);
1194 /* otherwise create a new one */
1195 return new_d_strictConv(dbgi, node, mode);
1198 static ir_node *get_global_var_address(dbg_info *const dbgi,
1199 const declaration_t *const decl)
1201 assert(decl->declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
1203 ir_entity *const entity = decl->v.entity;
1204 switch ((storage_class_tag_t)decl->storage_class) {
1205 case STORAGE_CLASS_THREAD:
1206 case STORAGE_CLASS_THREAD_EXTERN:
1207 case STORAGE_CLASS_THREAD_STATIC: {
1208 ir_node *const no_mem = new_NoMem();
1209 ir_node *const tls = get_irg_tls(current_ir_graph);
1210 return new_d_simpleSel(dbgi, no_mem, tls, entity);
1214 return create_symconst(dbgi, mode_P_data, entity);
1218 /* Returns the correct base address depending on whether it is a parameter or a
1219 * normal local variable */
1220 static ir_node *get_local_frame(ir_entity *const ent)
1222 ir_graph *const irg = current_ir_graph;
1223 const ir_type *const owner = get_entity_owner(ent);
1224 if (owner == get_irg_frame_type(irg)) {
1225 return get_irg_frame(irg);
1227 assert(owner == get_method_value_param_type(get_entity_type(get_irg_entity(irg))));
1228 return get_irg_value_param_base(irg);
1232 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
1234 ir_mode *value_mode = get_irn_mode(value);
1236 if (value_mode == dest_mode || is_Bad(value))
1239 if(dest_mode == mode_b) {
1240 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1241 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1242 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1246 return new_d_Conv(dbgi, value, dest_mode);
1249 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
1251 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1252 declaration_t *declaration = ref->declaration;
1253 type_t *type = skip_typeref(declaration->type);
1255 switch((declaration_kind_t) declaration->declaration_kind) {
1256 case DECLARATION_KIND_UNKNOWN:
1257 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
1263 case DECLARATION_KIND_ENUM_ENTRY: {
1264 ir_mode *const mode = get_ir_mode(type);
1265 return new_Const(mode, declaration->v.enum_val);
1268 case DECLARATION_KIND_LOCAL_VARIABLE: {
1269 ir_mode *const mode = get_ir_mode(type);
1270 return get_value(declaration->v.value_number, mode);
1272 case DECLARATION_KIND_FUNCTION: {
1273 ir_mode *const mode = get_ir_mode(type);
1274 return create_symconst(dbgi, mode, declaration->v.entity);
1276 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1277 ir_node *const addr = get_global_var_address(dbgi, declaration);
1278 return deref_address(declaration->type, addr, dbgi);
1281 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1282 ir_entity *entity = declaration->v.entity;
1283 ir_node *frame = get_local_frame(entity);
1284 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1285 return deref_address(declaration->type, sel, dbgi);
1288 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1289 return declaration->v.vla_base;
1291 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1292 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1293 case DECLARATION_KIND_COMPOUND_MEMBER:
1294 case DECLARATION_KIND_LABEL_BLOCK:
1295 panic("not implemented reference type");
1298 panic("reference to declaration with unknown type found");
1301 static ir_node *reference_addr(const reference_expression_t *ref)
1303 dbg_info *dbgi = get_dbg_info(&ref->base.source_position);
1304 declaration_t *declaration = ref->declaration;
1306 switch((declaration_kind_t) declaration->declaration_kind) {
1307 case DECLARATION_KIND_UNKNOWN:
1309 case DECLARATION_KIND_LOCAL_VARIABLE:
1310 panic("local variable without entity has no address");
1311 case DECLARATION_KIND_FUNCTION: {
1312 type_t *const type = skip_typeref(ref->base.type);
1313 ir_mode *const mode = get_ir_mode(type);
1314 return create_symconst(dbgi, mode, declaration->v.entity);
1316 case DECLARATION_KIND_GLOBAL_VARIABLE: {
1317 ir_node *const addr = get_global_var_address(dbgi, declaration);
1320 case DECLARATION_KIND_LOCAL_VARIABLE_ENTITY: {
1321 ir_entity *entity = declaration->v.entity;
1322 ir_node *frame = get_local_frame(entity);
1323 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
1328 case DECLARATION_KIND_VARIABLE_LENGTH_ARRAY:
1329 return declaration->v.vla_base;
1331 case DECLARATION_KIND_ENUM_ENTRY:
1332 panic("trying to reference enum entry");
1334 case DECLARATION_KIND_COMPOUND_TYPE_INCOMPLETE:
1335 case DECLARATION_KIND_COMPOUND_TYPE_COMPLETE:
1336 case DECLARATION_KIND_COMPOUND_MEMBER:
1337 case DECLARATION_KIND_LABEL_BLOCK:
1338 panic("not implemented reference type");
1341 panic("reference to declaration with unknown type found");
1344 static ir_node *process_builtin_call(const call_expression_t *call)
1346 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1348 assert(call->function->kind == EXPR_BUILTIN_SYMBOL);
1349 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
1351 type_t *type = skip_typeref(builtin->base.type);
1352 assert(is_type_pointer(type));
1354 type_t *function_type = skip_typeref(type->pointer.points_to);
1355 symbol_t *symbol = builtin->symbol;
1357 switch(symbol->ID) {
1358 case T___builtin_alloca: {
1359 if(call->arguments == NULL || call->arguments->next != NULL) {
1360 panic("invalid number of parameters on __builtin_alloca");
1362 expression_t *argument = call->arguments->expression;
1363 ir_node *size = expression_to_firm(argument);
1365 ir_node *store = get_store();
1366 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
1368 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
1370 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
1374 case T___builtin_huge_val: {
1375 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1376 tarval *tv = get_mode_infinite(mode);
1377 ir_node *res = new_d_Const(dbgi, mode, tv);
1380 case T___builtin_nan:
1381 case T___builtin_nanf:
1382 case T___builtin_nand: {
1383 /* Ignore string for now... */
1384 assert(is_type_function(function_type));
1385 ir_mode *mode = get_ir_mode(function_type->function.return_type);
1386 tarval *tv = get_mode_NAN(mode);
1387 ir_node *res = new_d_Const(dbgi, mode, tv);
1390 case T___builtin_va_end:
1393 panic("Unsupported builtin found\n");
1397 static ir_node *call_expression_to_firm(const call_expression_t *call)
1399 assert(get_cur_block() != NULL);
1401 expression_t *function = call->function;
1402 if(function->kind == EXPR_BUILTIN_SYMBOL) {
1403 return process_builtin_call(call);
1405 ir_node *callee = expression_to_firm(function);
1407 type_t *type = skip_typeref(function->base.type);
1408 assert(is_type_pointer(type));
1409 pointer_type_t *pointer_type = &type->pointer;
1410 type_t *points_to = skip_typeref(pointer_type->points_to);
1411 assert(is_type_function(points_to));
1412 function_type_t *function_type = &points_to->function;
1414 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1416 int n_parameters = 0;
1417 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
1418 ir_type *new_method_type = NULL;
1419 if(function_type->variadic || function_type->unspecified_parameters) {
1420 const call_argument_t *argument = call->arguments;
1421 for( ; argument != NULL; argument = argument->next) {
1425 /* we need to construct a new method type matching the call
1427 int n_res = get_method_n_ress(ir_method_type);
1428 dbg_info *dbgi = get_dbg_info(&call->base.source_position);
1429 new_method_type = new_d_type_method(id_unique("calltype.%u"),
1430 n_parameters, n_res, dbgi);
1431 set_method_calling_convention(new_method_type,
1432 get_method_calling_convention(ir_method_type));
1433 set_method_additional_properties(new_method_type,
1434 get_method_additional_properties(ir_method_type));
1435 set_method_variadicity(new_method_type,
1436 get_method_variadicity(ir_method_type));
1438 for(int i = 0; i < n_res; ++i) {
1439 set_method_res_type(new_method_type, i,
1440 get_method_res_type(ir_method_type, i));
1442 argument = call->arguments;
1443 for(int i = 0; i < n_parameters; ++i, argument = argument->next) {
1444 expression_t *expression = argument->expression;
1445 ir_type *irtype = get_ir_type(expression->base.type);
1446 set_method_param_type(new_method_type, i, irtype);
1448 ir_method_type = new_method_type;
1450 n_parameters = get_method_n_params(ir_method_type);
1453 ir_node *in[n_parameters];
1455 const call_argument_t *argument = call->arguments;
1456 for(int n = 0; n < n_parameters; ++n) {
1457 expression_t *expression = argument->expression;
1458 ir_node *arg_node = expression_to_firm(expression);
1460 arg_node = do_strict_conv(dbgi, arg_node);
1464 argument = argument->next;
1467 ir_node *store = get_store();
1468 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
1470 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
1473 type_t *return_type = skip_typeref(function_type->return_type);
1474 ir_node *result = NULL;
1476 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
1478 if(is_type_scalar(return_type)) {
1479 mode = get_ir_mode(return_type);
1483 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
1484 result = new_d_Proj(dbgi, resproj, mode, 0);
1490 static void statement_to_firm(statement_t *statement);
1491 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
1493 static ir_node *expression_to_addr(const expression_t *expression);
1494 static void create_condition_evaluation(const expression_t *expression,
1495 ir_node *true_block,
1496 ir_node *false_block);
1498 static void assign_value(dbg_info *dbgi, ir_node *addr, type_t *type,
1501 value = do_strict_conv(dbgi, value);
1503 ir_node *memory = get_store();
1505 if(is_type_scalar(type)) {
1506 ir_node *store = new_d_Store(dbgi, memory, addr, value);
1507 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1508 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE)
1509 set_Store_volatility(store, volatility_is_volatile);
1510 set_store(store_mem);
1512 ir_type *irtype = get_ir_type(type);
1513 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
1514 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
1515 set_store(copyb_mem);
1519 static tarval *create_bitfield_mask(ir_mode *mode, int offset, int size)
1521 tarval *all_one = get_mode_all_one(mode);
1522 int mode_size = get_mode_size_bits(mode);
1524 assert(offset >= 0 && size >= 0);
1525 assert(offset + size <= mode_size);
1526 if(size == mode_size) {
1530 long shiftr = get_mode_size_bits(mode) - size;
1531 long shiftl = offset;
1532 tarval *tv_shiftr = new_tarval_from_long(shiftr, mode_uint);
1533 tarval *tv_shiftl = new_tarval_from_long(shiftl, mode_uint);
1534 tarval *mask0 = tarval_shr(all_one, tv_shiftr);
1535 tarval *mask1 = tarval_shl(mask0, tv_shiftl);
1540 static void bitfield_store_to_firm(const unary_expression_t *expression,
1543 expression_t *select = expression->value;
1544 assert(select->kind == EXPR_SELECT);
1545 type_t *type = select->base.type;
1546 assert(type->kind == TYPE_BITFIELD);
1547 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1548 ir_node *addr = expression_to_addr(select);
1550 assert(get_irn_mode(value) == mode || is_Bad(value));
1552 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1554 /* kill upper bits of value and shift to right position */
1555 ir_entity *entity = select->select.compound_entry->v.entity;
1556 int bitoffset = get_entity_offset_bits_remainder(entity);
1557 ir_type *entity_type = get_entity_type(entity);
1558 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1560 tarval *mask = create_bitfield_mask(mode, 0, bitsize);
1561 ir_node *mask_node = new_d_Const(dbgi, mode, mask);
1562 ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
1563 tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
1564 ir_node *shiftcount = new_d_Const(dbgi, mode_uint, shiftl);
1565 ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
1567 /* load current value */
1568 ir_node *mem = get_store();
1569 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1570 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1571 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1572 tarval *shift_mask = create_bitfield_mask(mode, bitoffset, bitsize);
1573 tarval *inv_mask = tarval_not(shift_mask);
1574 ir_node *inv_mask_node = new_d_Const(dbgi, mode, inv_mask);
1575 ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
1577 /* construct new value and store */
1578 ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
1579 ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val);
1580 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
1581 set_store(store_mem);
1583 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
1584 set_Load_volatility(load, volatility_is_volatile);
1585 set_Store_volatility(store, volatility_is_volatile);
1589 static void set_value_for_expression(const expression_t *expression,
1592 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1593 value = do_strict_conv(dbgi, value);
1595 if(expression->kind == EXPR_REFERENCE) {
1596 const reference_expression_t *ref = &expression->reference;
1598 declaration_t *declaration = ref->declaration;
1599 assert(declaration->declaration_kind != DECLARATION_KIND_UNKNOWN);
1600 if(declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
1601 set_value(declaration->v.value_number, value);
1606 if(expression->kind == EXPR_UNARY_BITFIELD_EXTRACT) {
1607 bitfield_store_to_firm(&expression->unary, value);
1611 ir_node *addr = expression_to_addr(expression);
1612 type_t *type = skip_typeref(expression->base.type);
1613 assign_value(dbgi, addr, type, value);
1616 static ir_node *create_incdec(const unary_expression_t *expression)
1618 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1619 type_t *type = skip_typeref(expression->base.type);
1620 ir_mode *mode = get_ir_mode(type);
1621 expression_t *value = expression->value;
1623 ir_node *value_node = expression_to_firm(value);
1626 if(is_type_pointer(type)) {
1627 pointer_type_t *pointer_type = &type->pointer;
1628 offset = get_type_size(pointer_type->points_to);
1630 assert(is_type_arithmetic(type));
1631 offset = new_Const(mode, get_mode_one(mode));
1634 switch(expression->base.kind) {
1635 case EXPR_UNARY_POSTFIX_INCREMENT: {
1636 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1637 set_value_for_expression(value, new_value);
1640 case EXPR_UNARY_POSTFIX_DECREMENT: {
1641 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1642 set_value_for_expression(value, new_value);
1645 case EXPR_UNARY_PREFIX_INCREMENT: {
1646 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1647 set_value_for_expression(value, new_value);
1650 case EXPR_UNARY_PREFIX_DECREMENT: {
1651 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1652 set_value_for_expression(value, new_value);
1656 panic("no incdec expr in create_incdec");
1661 static bool is_local_variable(expression_t *expression)
1663 if (expression->kind != EXPR_REFERENCE)
1665 reference_expression_t *ref_expr = &expression->reference;
1666 declaration_t *declaration = ref_expr->declaration;
1667 return declaration->declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE;
1670 static pn_Cmp get_pnc(const expression_kind_t kind, type_t *const type)
1673 case EXPR_BINARY_EQUAL: return pn_Cmp_Eq;
1674 case EXPR_BINARY_ISLESSGREATER: return pn_Cmp_Lg;
1675 case EXPR_BINARY_NOTEQUAL:
1676 return is_type_float(skip_typeref(type)) ? pn_Cmp_Ne : pn_Cmp_Lg;
1677 case EXPR_BINARY_ISLESS:
1678 case EXPR_BINARY_LESS: return pn_Cmp_Lt;
1679 case EXPR_BINARY_ISLESSEQUAL:
1680 case EXPR_BINARY_LESSEQUAL: return pn_Cmp_Le;
1681 case EXPR_BINARY_ISGREATER:
1682 case EXPR_BINARY_GREATER: return pn_Cmp_Gt;
1683 case EXPR_BINARY_ISGREATEREQUAL:
1684 case EXPR_BINARY_GREATEREQUAL: return pn_Cmp_Ge;
1685 case EXPR_BINARY_ISUNORDERED: return pn_Cmp_Uo;
1690 panic("trying to get pn_Cmp from non-comparison binexpr type");
1694 * Handle the assume optimizer hint: check if a Confirm
1695 * node can be created.
1697 * @param dbi debug info
1698 * @param expr the IL assume expression
1700 * we support here only some simple cases:
1705 static ir_node *handle_assume_compare(dbg_info *dbi,
1706 const binary_expression_t *expression)
1708 expression_t *op1 = expression->left;
1709 expression_t *op2 = expression->right;
1710 declaration_t *var2, *var = NULL;
1711 ir_node *res = NULL;
1714 cmp_val = get_pnc(expression->base.kind, op1->base.type);
1716 if (is_local_variable(op1) && is_local_variable(op2)) {
1717 var = op1->reference.declaration;
1718 var2 = op2->reference.declaration;
1720 type_t *const type = skip_typeref(var->type);
1721 ir_mode *const mode = get_ir_mode(type);
1723 ir_node *const irn1 = get_value(var->v.value_number, mode);
1724 ir_node *const irn2 = get_value(var2->v.value_number, mode);
1726 res = new_d_Confirm(dbi, irn2, irn1, get_inversed_pnc(cmp_val));
1727 set_value(var2->v.value_number, res);
1729 res = new_d_Confirm(dbi, irn1, irn2, cmp_val);
1730 set_value(var->v.value_number, res);
1736 if (is_local_variable(op1) && is_constant_expression(op2)) {
1737 var = op1->reference.declaration;
1739 } else if (is_constant_expression(op1) && is_local_variable(op2)) {
1740 cmp_val = get_inversed_pnc(cmp_val);
1741 var = op2->reference.declaration;
1746 type_t *const type = skip_typeref(var->type);
1747 ir_mode *const mode = get_ir_mode(type);
1749 res = get_value(var->v.value_number, mode);
1750 res = new_d_Confirm(dbi, res, expression_to_firm(con), cmp_val);
1751 set_value(var->v.value_number, res);
1757 * Handle the assume optimizer hint.
1759 * @param dbi debug info
1760 * @param expr the IL assume expression
1762 static ir_node *handle_assume(dbg_info *dbi, const expression_t *expression) {
1763 switch(expression->kind) {
1764 case EXPR_BINARY_EQUAL:
1765 case EXPR_BINARY_NOTEQUAL:
1766 case EXPR_BINARY_LESS:
1767 case EXPR_BINARY_LESSEQUAL:
1768 case EXPR_BINARY_GREATER:
1769 case EXPR_BINARY_GREATEREQUAL:
1770 return handle_assume_compare(dbi, &expression->binary);
1776 static ir_node *bitfield_extract_to_firm(const unary_expression_t *expression)
1778 expression_t *select = expression->value;
1779 assert(select->kind == EXPR_SELECT);
1781 type_t *type = select->base.type;
1782 assert(type->kind == TYPE_BITFIELD);
1783 ir_mode *mode = get_ir_mode(type->bitfield.base_type);
1784 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1785 ir_node *addr = expression_to_addr(select);
1786 ir_node *mem = get_store();
1787 ir_node *load = new_d_Load(dbgi, mem, addr, mode);
1788 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
1789 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
1791 load_res = create_conv(dbgi, load_res, mode_int);
1793 set_store(load_mem);
1795 /* kill upper bits */
1796 ir_entity *entity = select->select.compound_entry->v.entity;
1797 int bitoffset = get_entity_offset_bits_remainder(entity);
1798 ir_type *entity_type = get_entity_type(entity);
1799 int bitsize = get_mode_size_bits(get_type_mode(entity_type));
1800 long shift_bitsl = machine_size - bitoffset - bitsize;
1801 assert(shift_bitsl >= 0);
1802 tarval *tvl = new_tarval_from_long(shift_bitsl, mode_uint);
1803 ir_node *countl = new_d_Const(dbgi, mode_uint, tvl);
1804 ir_node *shiftl = new_d_Shl(dbgi, load_res, countl, mode_int);
1806 long shift_bitsr = bitoffset + shift_bitsl;
1807 assert(shift_bitsr <= (long) machine_size);
1808 tarval *tvr = new_tarval_from_long(shift_bitsr, mode_uint);
1809 ir_node *countr = new_d_Const(dbgi, mode_uint, tvr);
1811 if(mode_is_signed(mode)) {
1812 shiftr = new_d_Shrs(dbgi, shiftl, countr, mode_int);
1814 shiftr = new_d_Shr(dbgi, shiftl, countr, mode_int);
1817 return create_conv(dbgi, shiftr, mode);
1820 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1822 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1823 type_t *type = skip_typeref(expression->base.type);
1825 if(expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
1826 return expression_to_addr(expression->value);
1828 const expression_t *value = expression->value;
1830 switch(expression->base.kind) {
1831 case EXPR_UNARY_NEGATE: {
1832 ir_node *value_node = expression_to_firm(value);
1833 ir_mode *mode = get_ir_mode(type);
1834 return new_d_Minus(dbgi, value_node, mode);
1836 case EXPR_UNARY_PLUS:
1837 return expression_to_firm(value);
1838 case EXPR_UNARY_BITWISE_NEGATE: {
1839 ir_node *value_node = expression_to_firm(value);
1840 ir_mode *mode = get_ir_mode(type);
1841 return new_d_Not(dbgi, value_node, mode);
1843 case EXPR_UNARY_NOT: {
1844 ir_node *value_node = expression_to_firm(value);
1845 ir_mode *mode = get_ir_mode(type);
1846 if(get_irn_mode(value_node) != mode_b) {
1847 value_node = create_conv(dbgi, value_node, mode_b);
1849 value_node = new_d_Not(dbgi, value_node, mode_b);
1850 if(mode != mode_b) {
1851 value_node = create_conv(dbgi, value_node, mode);
1855 case EXPR_UNARY_DEREFERENCE: {
1856 ir_node *value_node = expression_to_firm(value);
1857 type_t *value_type = skip_typeref(value->base.type);
1858 assert(is_type_pointer(value_type));
1859 type_t *points_to = value_type->pointer.points_to;
1860 return deref_address(points_to, value_node, dbgi);
1862 case EXPR_UNARY_POSTFIX_INCREMENT:
1863 case EXPR_UNARY_POSTFIX_DECREMENT:
1864 case EXPR_UNARY_PREFIX_INCREMENT:
1865 case EXPR_UNARY_PREFIX_DECREMENT:
1866 return create_incdec(expression);
1867 case EXPR_UNARY_CAST: {
1868 ir_node *value_node = expression_to_firm(value);
1869 if(is_type_scalar(type)) {
1870 ir_mode *mode = get_ir_mode(type);
1871 ir_node *node = create_conv(dbgi, value_node, mode);
1872 node = do_strict_conv(dbgi, node);
1875 /* make sure firm type is constructed */
1876 (void) get_ir_type(type);
1880 case EXPR_UNARY_CAST_IMPLICIT: {
1881 ir_node *value_node = expression_to_firm(value);
1882 if(is_type_scalar(type)) {
1883 ir_mode *mode = get_ir_mode(type);
1884 return create_conv(dbgi, value_node, mode);
1889 case EXPR_UNARY_ASSUME:
1890 if(firm_opt.confirm)
1891 return handle_assume(dbgi, value);
1894 case EXPR_UNARY_BITFIELD_EXTRACT:
1895 return bitfield_extract_to_firm(expression);
1900 panic("invalid UNEXPR type found");
1903 static ir_node *produce_condition_result(const expression_t *expression,
1906 ir_mode *mode = get_ir_mode(expression->base.type);
1907 ir_node *cur_block = get_cur_block();
1909 ir_node *one_block = new_immBlock();
1910 ir_node *one = new_Const(mode, get_mode_one(mode));
1911 ir_node *jmp_one = new_d_Jmp(dbgi);
1913 ir_node *zero_block = new_immBlock();
1914 ir_node *zero = new_Const(mode, get_mode_null(mode));
1915 ir_node *jmp_zero = new_d_Jmp(dbgi);
1917 set_cur_block(cur_block);
1918 create_condition_evaluation(expression, one_block, zero_block);
1919 mature_immBlock(one_block);
1920 mature_immBlock(zero_block);
1922 ir_node *common_block = new_immBlock();
1923 add_immBlock_pred(common_block, jmp_one);
1924 add_immBlock_pred(common_block, jmp_zero);
1925 mature_immBlock(common_block);
1927 ir_node *in[2] = { one, zero };
1928 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1933 static ir_node *create_lazy_op(const binary_expression_t *expression)
1935 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1936 type_t *type = expression->base.type;
1937 ir_mode *mode = get_ir_mode(type);
1939 if(is_constant_expression(expression->left)) {
1940 long val = fold_constant(expression->left);
1941 expression_kind_t ekind = expression->base.kind;
1942 if((ekind == EXPR_BINARY_LOGICAL_AND && val != 0)
1943 || (ekind == EXPR_BINARY_LOGICAL_OR && val == 0)) {
1944 return expression_to_firm(expression->right);
1946 assert((ekind == EXPR_BINARY_LOGICAL_AND && val == 0)
1947 || (ekind == EXPR_BINARY_LOGICAL_OR && val != 0));
1948 return new_Const(mode, get_mode_one(mode));
1952 return produce_condition_result((const expression_t*) expression, dbgi);
1955 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1956 ir_node *right, ir_mode *mode);
1958 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1959 create_arithmetic_func func)
1961 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1962 ir_node *left = expression_to_firm(expression->left);
1963 ir_node *right = expression_to_firm(expression->right);
1964 type_t *type = expression->right->base.type;
1965 /* be careful with the modes, because in arithmetic assign nodes only
1966 * the right operand has the mode of the arithmetic already */
1967 ir_mode *mode = get_ir_mode(type);
1968 left = create_conv(dbgi, left, mode);
1969 ir_node *res = func(dbgi, left, right, mode);
1974 static ir_node *pointer_arithmetic(ir_node *const pointer,
1977 dbg_info *const dbgi,
1978 const create_arithmetic_func func)
1980 pointer_type_t *const pointer_type = &type->pointer;
1981 type_t *const points_to = pointer_type->points_to;
1982 const unsigned elem_size = get_type_size_const(points_to);
1984 assert(elem_size >= 1);
1985 if (elem_size > 1) {
1986 integer = create_conv(dbgi, integer, mode_int);
1987 ir_node *const cnst = new_Const_long(mode_int, (long)elem_size);
1988 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_int);
1992 ir_mode *const mode = get_ir_mode(type);
1993 return func(dbgi, pointer, integer, mode);
1996 static ir_node *create_arithmetic_assign_binop(
1997 const binary_expression_t *expression, create_arithmetic_func func)
1999 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2000 type_t *const type = skip_typeref(expression->base.type);
2003 if (is_type_pointer(type)) {
2004 ir_node *const pointer = expression_to_firm(expression->left);
2005 ir_node * integer = expression_to_firm(expression->right);
2006 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
2008 value = create_arithmetic_binop(expression, func);
2011 ir_mode *const mode = get_ir_mode(type);
2012 value = create_conv(dbgi, value, mode);
2013 set_value_for_expression(expression->left, value);
2018 static ir_node *create_add(const binary_expression_t *expression)
2020 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2021 ir_node *left = expression_to_firm(expression->left);
2022 ir_node *right = expression_to_firm(expression->right);
2023 type_t *type = expression->base.type;
2025 expression_t *expr_left = expression->left;
2026 expression_t *expr_right = expression->right;
2027 type_t *type_left = skip_typeref(expr_left->base.type);
2028 type_t *type_right = skip_typeref(expr_right->base.type);
2030 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2031 ir_mode *const mode = get_ir_mode(type);
2032 return new_d_Add(dbgi, left, right, mode);
2035 if (is_type_pointer(type_left)) {
2036 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
2038 assert(is_type_pointer(type_right));
2039 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
2043 static ir_node *create_sub(const binary_expression_t *expression)
2045 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2046 expression_t *const expr_left = expression->left;
2047 expression_t *const expr_right = expression->right;
2048 ir_node *const left = expression_to_firm(expr_left);
2049 ir_node *const right = expression_to_firm(expr_right);
2050 type_t *const type = expression->base.type;
2051 type_t *const type_left = skip_typeref(expr_left->base.type);
2052 type_t *const type_right = skip_typeref(expr_right->base.type);
2054 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
2055 ir_mode *const mode = get_ir_mode(type);
2056 return new_d_Sub(dbgi, left, right, mode);
2057 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
2058 const pointer_type_t *const ptr_type = &type_left->pointer;
2060 ir_node *const elem_size = get_type_size(ptr_type->points_to);
2061 ir_mode *const mode = get_ir_mode(type);
2062 ir_node *const conv_size = new_d_Conv(dbgi, elem_size, mode);
2063 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
2064 ir_node *const no_mem = new_NoMem();
2065 ir_node *const div = new_d_DivRL(dbgi, no_mem, sub, conv_size, mode,
2066 op_pin_state_floats);
2067 return new_d_Proj(dbgi, div, mode, pn_Div_res);
2070 assert(is_type_pointer(type_left));
2071 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
2074 static ir_node *create_shift(const binary_expression_t *expression)
2076 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2077 ir_node *left = expression_to_firm(expression->left);
2078 ir_node *right = expression_to_firm(expression->right);
2079 type_t *type = expression->base.type;
2080 ir_mode *mode = get_ir_mode(type);
2082 /* firm always wants the shift count to be unsigned */
2083 right = create_conv(dbgi, right, mode_uint);
2087 switch(expression->base.kind) {
2088 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2089 case EXPR_BINARY_SHIFTLEFT:
2090 res = new_d_Shl(dbgi, left, right, mode);
2092 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2093 case EXPR_BINARY_SHIFTRIGHT: {
2094 expression_t *expr_left = expression->left;
2095 type_t *type_left = skip_typeref(expr_left->base.type);
2097 if(is_type_signed(type_left)) {
2098 res = new_d_Shrs(dbgi, left, right, mode);
2100 res = new_d_Shr(dbgi, left, right, mode);
2105 panic("create shift op called for non-shift op");
2112 static ir_node *create_divmod(const binary_expression_t *expression)
2114 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2115 ir_node *left = expression_to_firm(expression->left);
2116 ir_node *right = expression_to_firm(expression->right);
2117 ir_node *pin = new_Pin(new_NoMem());
2118 /* be careful with the modes, because in arithmetic assign nodes only
2119 * the right operand has the mode of the arithmetic already */
2120 type_t *type = expression->right->base.type;
2121 ir_mode *mode = get_ir_mode(type);
2122 left = create_conv(dbgi, left, mode);
2126 switch (expression->base.kind) {
2127 case EXPR_BINARY_DIV:
2128 case EXPR_BINARY_DIV_ASSIGN:
2129 if(mode_is_float(mode)) {
2130 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
2131 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
2133 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
2134 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
2138 case EXPR_BINARY_MOD:
2139 case EXPR_BINARY_MOD_ASSIGN:
2140 assert(!mode_is_float(mode));
2141 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
2142 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
2145 default: panic("unexpected binary expression type in create_divmod()");
2151 static ir_node *create_arithmetic_assign_divmod(
2152 const binary_expression_t *expression)
2154 ir_node * value = create_divmod(expression);
2155 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2156 type_t *const type = expression->base.type;
2157 ir_mode *const mode = get_ir_mode(type);
2159 assert(type->kind != TYPE_POINTER);
2161 value = create_conv(dbgi, value, mode);
2162 set_value_for_expression(expression->left, value);
2167 static ir_node *create_arithmetic_assign_shift(
2168 const binary_expression_t *expression)
2170 ir_node * value = create_shift(expression);
2171 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2172 type_t *const type = expression->base.type;
2173 ir_mode *const mode = get_ir_mode(type);
2175 value = create_conv(dbgi, value, mode);
2176 set_value_for_expression(expression->left, value);
2181 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
2183 expression_kind_t kind = expression->base.kind;
2186 case EXPR_BINARY_EQUAL:
2187 case EXPR_BINARY_NOTEQUAL:
2188 case EXPR_BINARY_LESS:
2189 case EXPR_BINARY_LESSEQUAL:
2190 case EXPR_BINARY_GREATER:
2191 case EXPR_BINARY_GREATEREQUAL:
2192 case EXPR_BINARY_ISGREATER:
2193 case EXPR_BINARY_ISGREATEREQUAL:
2194 case EXPR_BINARY_ISLESS:
2195 case EXPR_BINARY_ISLESSEQUAL:
2196 case EXPR_BINARY_ISLESSGREATER:
2197 case EXPR_BINARY_ISUNORDERED: {
2198 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2199 ir_node *left = expression_to_firm(expression->left);
2200 ir_node *right = expression_to_firm(expression->right);
2201 ir_node *cmp = new_d_Cmp(dbgi, left, right);
2202 long pnc = get_pnc(kind, expression->left->base.type);
2203 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
2206 case EXPR_BINARY_ASSIGN: {
2207 ir_node *right = expression_to_firm(expression->right);
2208 set_value_for_expression(expression->left, right);
2212 case EXPR_BINARY_ADD:
2213 return create_add(expression);
2214 case EXPR_BINARY_SUB:
2215 return create_sub(expression);
2216 case EXPR_BINARY_MUL:
2217 return create_arithmetic_binop(expression, new_d_Mul);
2218 case EXPR_BINARY_BITWISE_AND:
2219 return create_arithmetic_binop(expression, new_d_And);
2220 case EXPR_BINARY_BITWISE_OR:
2221 return create_arithmetic_binop(expression, new_d_Or);
2222 case EXPR_BINARY_BITWISE_XOR:
2223 return create_arithmetic_binop(expression, new_d_Eor);
2224 case EXPR_BINARY_SHIFTLEFT:
2225 case EXPR_BINARY_SHIFTRIGHT:
2226 return create_shift(expression);
2227 case EXPR_BINARY_DIV:
2228 case EXPR_BINARY_MOD:
2229 return create_divmod(expression);
2230 case EXPR_BINARY_LOGICAL_AND:
2231 case EXPR_BINARY_LOGICAL_OR:
2232 return create_lazy_op(expression);
2233 case EXPR_BINARY_COMMA:
2234 expression_to_firm(expression->left);
2235 return expression_to_firm(expression->right);
2236 case EXPR_BINARY_ADD_ASSIGN:
2237 return create_arithmetic_assign_binop(expression, new_d_Add);
2238 case EXPR_BINARY_SUB_ASSIGN:
2239 return create_arithmetic_assign_binop(expression, new_d_Sub);
2240 case EXPR_BINARY_MUL_ASSIGN:
2241 return create_arithmetic_assign_binop(expression, new_d_Mul);
2242 case EXPR_BINARY_MOD_ASSIGN:
2243 case EXPR_BINARY_DIV_ASSIGN:
2244 return create_arithmetic_assign_divmod(expression);
2245 case EXPR_BINARY_BITWISE_AND_ASSIGN:
2246 return create_arithmetic_assign_binop(expression, new_d_And);
2247 case EXPR_BINARY_BITWISE_OR_ASSIGN:
2248 return create_arithmetic_assign_binop(expression, new_d_Or);
2249 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
2250 return create_arithmetic_assign_binop(expression, new_d_Eor);
2251 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
2252 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
2253 return create_arithmetic_assign_shift(expression);
2254 case EXPR_BINARY_BUILTIN_EXPECT:
2255 return expression_to_firm(expression->left);
2257 panic("TODO binexpr type");
2261 static ir_node *array_access_addr(const array_access_expression_t *expression)
2263 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2264 ir_node *base_addr = expression_to_firm(expression->array_ref);
2265 ir_node *offset = expression_to_firm(expression->index);
2267 /* Matze: it would be better to force mode to mode_uint as this creates more
2268 * opportunities for CSE. Unforunately we still have some optimisations that
2269 * are too conservative in the presence of convs. So we better go with the
2270 * mode of offset and avoid the conv */
2271 ir_mode *mode = get_irn_mode(offset);
2272 offset = create_conv(dbgi, offset, mode);
2274 type_t *ref_type = skip_typeref(expression->array_ref->base.type);
2275 assert(is_type_pointer(ref_type));
2276 pointer_type_t *pointer_type = &ref_type->pointer;
2278 ir_node *elem_size_const = get_type_size(pointer_type->points_to);
2279 elem_size_const = create_conv(dbgi, elem_size_const, mode);
2280 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
2282 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P_data);
2287 static ir_node *array_access_to_firm(
2288 const array_access_expression_t *expression)
2290 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2291 ir_node *addr = array_access_addr(expression);
2292 type_t *type = revert_automatic_type_conversion(
2293 (const expression_t*) expression);
2294 type = skip_typeref(type);
2296 return deref_address(type, addr, dbgi);
2299 static long get_offsetof_offset(const offsetof_expression_t *expression)
2301 type_t *orig_type = expression->type;
2304 designator_t *designator = expression->designator;
2305 for( ; designator != NULL; designator = designator->next) {
2306 type_t *type = skip_typeref(orig_type);
2307 /* be sure the type is constructed */
2308 (void) get_ir_type(type);
2310 if(designator->symbol != NULL) {
2311 assert(is_type_compound(type));
2312 symbol_t *symbol = designator->symbol;
2314 declaration_t *declaration = type->compound.declaration;
2315 declaration_t *iter = declaration->scope.declarations;
2316 for( ; iter != NULL; iter = iter->next) {
2317 if(iter->symbol == symbol) {
2321 assert(iter != NULL);
2323 assert(iter->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2324 offset += get_entity_offset(iter->v.entity);
2326 orig_type = iter->type;
2328 expression_t *array_index = designator->array_index;
2329 assert(designator->array_index != NULL);
2330 assert(is_type_array(type));
2331 assert(is_type_valid(array_index->base.type));
2333 long index = fold_constant(array_index);
2334 ir_type *arr_type = get_ir_type(type);
2335 ir_type *elem_type = get_array_element_type(arr_type);
2336 long elem_size = get_type_size_bytes(elem_type);
2338 offset += index * elem_size;
2340 orig_type = type->array.element_type;
2347 static ir_node *offsetof_to_firm(const offsetof_expression_t *expression)
2349 ir_mode *mode = get_ir_mode(expression->base.type);
2350 long offset = get_offsetof_offset(expression);
2351 tarval *tv = new_tarval_from_long(offset, mode);
2352 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2354 return new_d_Const(dbgi, mode, tv);
2357 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
2358 ir_entity *entity, type_t *type);
2360 static ir_node *compound_literal_to_firm(
2361 const compound_literal_expression_t *expression)
2363 type_t *type = expression->type;
2365 /* create an entity on the stack */
2366 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2368 ident *const id = id_unique("CompLit.%u");
2369 ir_type *const irtype = get_ir_type(type);
2370 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2371 ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
2372 set_entity_ld_ident(entity, id);
2374 set_entity_variability(entity, variability_uninitialized);
2376 /* create initialisation code */
2377 initializer_t *initializer = expression->initializer;
2378 create_local_initializer(initializer, dbgi, entity, type);
2380 /* create a sel for the compound literal address */
2381 ir_node *frame = get_local_frame(entity);
2382 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
2387 * Transform a sizeof expression into Firm code.
2389 static ir_node *sizeof_to_firm(const typeprop_expression_t *expression)
2391 type_t *type = expression->type;
2393 type = expression->tp_expression->base.type;
2394 assert(type != NULL);
2397 type = skip_typeref(type);
2398 /* ยง 6.5.3.4 (2) if the type is a VLA, evaluate the expression. */
2399 if(is_type_array(type) && type->array.is_vla
2400 && expression->tp_expression != NULL) {
2401 expression_to_firm(expression->tp_expression);
2404 return get_type_size(type);
2408 * Transform an alignof expression into Firm code.
2410 static ir_node *alignof_to_firm(const typeprop_expression_t *expression)
2412 type_t *type = expression->type;
2414 /* beware: if expression is a variable reference, return the
2415 alignment of the variable. */
2416 const expression_t *tp_expression = expression->tp_expression;
2417 const declaration_t *declaration = expr_is_variable(tp_expression);
2418 if (declaration != NULL) {
2419 /* TODO: get the alignment of this variable. */
2421 type = tp_expression->base.type;
2422 assert(type != NULL);
2425 ir_mode *const mode = get_ir_mode(expression->base.type);
2426 symconst_symbol sym;
2427 sym.type_p = get_ir_type(type);
2428 return new_SymConst(mode, sym, symconst_type_align);
2431 static void init_ir_types(void);
2432 long fold_constant(const expression_t *expression)
2436 assert(is_constant_expression(expression));
2438 ir_graph *old_current_ir_graph = current_ir_graph;
2439 if(current_ir_graph == NULL) {
2440 current_ir_graph = get_const_code_irg();
2443 ir_node *cnst = expression_to_firm(expression);
2444 current_ir_graph = old_current_ir_graph;
2446 if(!is_Const(cnst)) {
2447 panic("couldn't fold constant\n");
2450 tarval *tv = get_Const_tarval(cnst);
2451 if(!tarval_is_long(tv)) {
2452 panic("result of constant folding is not integer\n");
2455 return get_tarval_long(tv);
2458 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
2460 dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
2462 /* first try to fold a constant condition */
2463 if(is_constant_expression(expression->condition)) {
2464 long val = fold_constant(expression->condition);
2466 return expression_to_firm(expression->true_expression);
2468 return expression_to_firm(expression->false_expression);
2472 ir_node *cur_block = get_cur_block();
2474 /* create the true block */
2475 ir_node *true_block = new_immBlock();
2477 ir_node *true_val = expression_to_firm(expression->true_expression);
2478 ir_node *true_jmp = new_Jmp();
2480 /* create the false block */
2481 ir_node *false_block = new_immBlock();
2483 ir_node *false_val = expression_to_firm(expression->false_expression);
2484 ir_node *false_jmp = new_Jmp();
2486 /* create the condition evaluation */
2487 set_cur_block(cur_block);
2488 create_condition_evaluation(expression->condition, true_block, false_block);
2489 mature_immBlock(true_block);
2490 mature_immBlock(false_block);
2492 /* create the common block */
2493 ir_node *common_block = new_immBlock();
2494 add_immBlock_pred(common_block, true_jmp);
2495 add_immBlock_pred(common_block, false_jmp);
2496 mature_immBlock(common_block);
2498 /* TODO improve static semantics, so either both or no values are NULL */
2499 if (true_val == NULL || false_val == NULL)
2502 ir_node *in[2] = { true_val, false_val };
2503 ir_mode *mode = get_irn_mode(true_val);
2504 assert(get_irn_mode(false_val) == mode);
2505 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
2510 static ir_node *select_addr(const select_expression_t *expression)
2512 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2514 ir_node *compound_addr = expression_to_firm(expression->compound);
2516 /* make sure the type is constructed */
2517 type_t *type = skip_typeref(expression->compound->base.type);
2518 if (is_type_pointer(type)) {
2519 type = type->pointer.points_to;
2521 (void) get_ir_type(type);
2523 declaration_t *entry = expression->compound_entry;
2524 assert(entry->declaration_kind == DECLARATION_KIND_COMPOUND_MEMBER);
2525 ir_entity *entity = entry->v.entity;
2527 assert(entity != NULL);
2529 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
2534 static ir_node *select_to_firm(const select_expression_t *expression)
2536 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2537 ir_node *addr = select_addr(expression);
2538 type_t *type = revert_automatic_type_conversion(
2539 (const expression_t*) expression);
2540 type = skip_typeref(type);
2542 return deref_address(type, addr, dbgi);
2545 /* Values returned by __builtin_classify_type. */
2546 typedef enum gcc_type_class
2552 enumeral_type_class,
2555 reference_type_class,
2559 function_type_class,
2570 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
2572 const type_t *const type = skip_typeref(expr->type_expression->base.type);
2578 const atomic_type_t *const atomic_type = &type->atomic;
2579 switch (atomic_type->akind) {
2580 /* should not be reached */
2581 case ATOMIC_TYPE_INVALID:
2585 /* gcc cannot do that */
2586 case ATOMIC_TYPE_VOID:
2587 tc = void_type_class;
2590 case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
2591 case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
2592 case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
2593 case ATOMIC_TYPE_SHORT:
2594 case ATOMIC_TYPE_USHORT:
2595 case ATOMIC_TYPE_INT:
2596 case ATOMIC_TYPE_UINT:
2597 case ATOMIC_TYPE_LONG:
2598 case ATOMIC_TYPE_ULONG:
2599 case ATOMIC_TYPE_LONGLONG:
2600 case ATOMIC_TYPE_ULONGLONG:
2601 case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
2602 tc = integer_type_class;
2605 case ATOMIC_TYPE_FLOAT:
2606 case ATOMIC_TYPE_DOUBLE:
2607 case ATOMIC_TYPE_LONG_DOUBLE:
2608 tc = real_type_class;
2611 panic("Unexpected atomic type in classify_type_to_firm().");
2614 case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
2615 case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
2616 case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
2617 case TYPE_ARRAY: /* gcc handles this as pointer */
2618 case TYPE_FUNCTION: /* gcc handles this as pointer */
2619 case TYPE_POINTER: tc = pointer_type_class; goto make_const;
2620 case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
2621 case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
2623 /* gcc handles this as integer */
2624 case TYPE_ENUM: tc = integer_type_class; goto make_const;
2627 /* typedef/typeof should be skipped already */
2634 panic("unexpected TYPE classify_type_to_firm().");
2637 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2638 ir_mode *const mode = mode_int;
2639 tarval *const tv = new_tarval_from_long(tc, mode);
2640 return new_d_Const(dbgi, mode, tv);
2643 static ir_node *function_name_to_firm(
2644 const funcname_expression_t *const expr)
2646 switch(expr->kind) {
2647 case FUNCNAME_FUNCTION:
2648 case FUNCNAME_PRETTY_FUNCTION:
2649 case FUNCNAME_FUNCDNAME:
2650 if (current_function_name == NULL) {
2651 const source_position_t *const src_pos = &expr->base.source_position;
2652 const char *const name = current_function_decl->symbol->string;
2653 const string_t string = { name, strlen(name) + 1 };
2654 current_function_name = string_to_firm(src_pos, "__func__.%u", &string);
2656 return current_function_name;
2657 case FUNCNAME_FUNCSIG:
2658 if (current_funcsig == NULL) {
2659 const source_position_t *const src_pos = &expr->base.source_position;
2660 ir_entity *ent = get_irg_entity(current_ir_graph);
2661 const char *const name = get_entity_ld_name(ent);
2662 const string_t string = { name, strlen(name) + 1 };
2663 current_funcsig = string_to_firm(src_pos, "__FUNCSIG__.%u", &string);
2665 return current_funcsig;
2667 panic("Unsupported function name");
2670 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
2672 statement_t *statement = expr->statement;
2674 assert(statement->kind == STATEMENT_COMPOUND);
2675 return compound_statement_to_firm(&statement->compound);
2678 static ir_node *va_start_expression_to_firm(
2679 const va_start_expression_t *const expr)
2681 ir_type *const method_type = get_ir_type(current_function_decl->type);
2682 int const n = get_method_n_params(method_type) - 1;
2683 ir_entity *const parm_ent = get_method_value_param_ent(method_type, n);
2684 ir_node *const arg_base = get_irg_value_param_base(current_ir_graph);
2685 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2686 ir_node *const no_mem = new_NoMem();
2687 ir_node *const arg_sel =
2688 new_d_simpleSel(dbgi, no_mem, arg_base, parm_ent);
2690 ir_node *const cnst = get_type_size(expr->parameter->type);
2691 ir_node *const add = new_d_Add(dbgi, arg_sel, cnst, mode_P_data);
2692 set_value_for_expression(expr->ap, add);
2697 static ir_node *va_arg_expression_to_firm(const va_arg_expression_t *const expr)
2699 type_t *const type = expr->base.type;
2700 ir_node *const ap = expression_to_firm(expr->ap);
2701 dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
2702 ir_node *const res = deref_address(type, ap, dbgi);
2704 ir_node *const cnst = get_type_size(expr->base.type);
2705 ir_node *const add = new_d_Add(dbgi, ap, cnst, mode_P_data);
2706 set_value_for_expression(expr->ap, add);
2711 static ir_node *dereference_addr(const unary_expression_t *const expression)
2713 assert(expression->base.kind == EXPR_UNARY_DEREFERENCE);
2714 return expression_to_firm(expression->value);
2717 static ir_node *expression_to_addr(const expression_t *expression)
2719 switch(expression->kind) {
2720 case EXPR_REFERENCE:
2721 return reference_addr(&expression->reference);
2722 case EXPR_ARRAY_ACCESS:
2723 return array_access_addr(&expression->array_access);
2725 return select_addr(&expression->select);
2727 return call_expression_to_firm(&expression->call);
2728 case EXPR_UNARY_DEREFERENCE: {
2729 return dereference_addr(&expression->unary);
2734 panic("trying to get address of non-lvalue");
2737 static ir_node *builtin_constant_to_firm(
2738 const builtin_constant_expression_t *expression)
2740 ir_mode *mode = get_ir_mode(expression->base.type);
2743 if (is_constant_expression(expression->value)) {
2748 return new_Const_long(mode, v);
2751 static ir_node *builtin_prefetch_to_firm(
2752 const builtin_prefetch_expression_t *expression)
2754 ir_node *adr = expression_to_firm(expression->adr);
2755 /* no Firm support for prefetch yet */
2760 static ir_node *_expression_to_firm(const expression_t *expression)
2762 switch(expression->kind) {
2763 case EXPR_CHARACTER_CONSTANT:
2764 return character_constant_to_firm(&expression->conste);
2765 case EXPR_WIDE_CHARACTER_CONSTANT:
2766 return wide_character_constant_to_firm(&expression->conste);
2768 return const_to_firm(&expression->conste);
2769 case EXPR_STRING_LITERAL:
2770 return string_literal_to_firm(&expression->string);
2771 case EXPR_WIDE_STRING_LITERAL:
2772 return wide_string_literal_to_firm(&expression->wide_string);
2773 case EXPR_REFERENCE:
2774 return reference_expression_to_firm(&expression->reference);
2776 return call_expression_to_firm(&expression->call);
2778 return unary_expression_to_firm(&expression->unary);
2780 return binary_expression_to_firm(&expression->binary);
2781 case EXPR_ARRAY_ACCESS:
2782 return array_access_to_firm(&expression->array_access);
2784 return sizeof_to_firm(&expression->typeprop);
2786 return alignof_to_firm(&expression->typeprop);
2787 case EXPR_CONDITIONAL:
2788 return conditional_to_firm(&expression->conditional);
2790 return select_to_firm(&expression->select);
2791 case EXPR_CLASSIFY_TYPE:
2792 return classify_type_to_firm(&expression->classify_type);
2794 return function_name_to_firm(&expression->funcname);
2795 case EXPR_STATEMENT:
2796 return statement_expression_to_firm(&expression->statement);
2798 return va_start_expression_to_firm(&expression->va_starte);
2800 return va_arg_expression_to_firm(&expression->va_arge);
2801 case EXPR_BUILTIN_SYMBOL:
2802 panic("unimplemented expression found");
2803 case EXPR_BUILTIN_CONSTANT_P:
2804 return builtin_constant_to_firm(&expression->builtin_constant);
2805 case EXPR_BUILTIN_PREFETCH:
2806 return builtin_prefetch_to_firm(&expression->builtin_prefetch);
2808 return offsetof_to_firm(&expression->offsetofe);
2809 case EXPR_COMPOUND_LITERAL:
2810 return compound_literal_to_firm(&expression->compound_literal);
2816 panic("invalid expression found");
2819 static ir_node *expression_to_firm(const expression_t *expression)
2821 ir_node *res = _expression_to_firm(expression);
2823 if(res != NULL && get_irn_mode(res) == mode_b) {
2824 ir_mode *mode = get_ir_mode(expression->base.type);
2826 if(is_Const_null(res)) {
2827 return new_Const_long(mode, 0);
2829 assert(is_Const_one(res));
2830 return new_Const_long(mode, 1);
2834 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2835 return produce_condition_result(expression, dbgi);
2841 static ir_node *expression_to_modeb(const expression_t *expression)
2843 ir_node *res = _expression_to_firm(expression);
2844 res = create_conv(NULL, res, mode_b);
2850 * create a short-circuit expression evaluation that tries to construct
2851 * efficient control flow structures for &&, || and ! expressions
2853 static void create_condition_evaluation(const expression_t *expression,
2854 ir_node *true_block,
2855 ir_node *false_block)
2857 switch(expression->kind) {
2858 case EXPR_UNARY_NOT: {
2859 const unary_expression_t *unary_expression = &expression->unary;
2860 create_condition_evaluation(unary_expression->value, false_block,
2864 case EXPR_BINARY_LOGICAL_AND: {
2865 const binary_expression_t *binary_expression = &expression->binary;
2867 ir_node *cur_block = get_cur_block();
2868 ir_node *extra_block = new_immBlock();
2869 set_cur_block(cur_block);
2870 create_condition_evaluation(binary_expression->left, extra_block,
2872 mature_immBlock(extra_block);
2873 set_cur_block(extra_block);
2874 create_condition_evaluation(binary_expression->right, true_block,
2878 case EXPR_BINARY_LOGICAL_OR: {
2879 const binary_expression_t *binary_expression = &expression->binary;
2881 ir_node *cur_block = get_cur_block();
2882 ir_node *extra_block = new_immBlock();
2883 set_cur_block(cur_block);
2884 create_condition_evaluation(binary_expression->left, true_block,
2886 mature_immBlock(extra_block);
2887 set_cur_block(extra_block);
2888 create_condition_evaluation(binary_expression->right, true_block,
2896 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
2897 ir_node *condition = expression_to_modeb(expression);
2898 ir_node *cond = new_d_Cond(dbgi, condition);
2899 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
2900 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
2902 /* set branch prediction info based on __builtin_expect */
2903 if(expression->kind == EXPR_BINARY_BUILTIN_EXPECT) {
2904 long cnst = fold_constant(expression->binary.right);
2905 cond_jmp_predicate pred;
2908 pred = COND_JMP_PRED_FALSE;
2910 pred = COND_JMP_PRED_TRUE;
2912 set_Cond_jmp_pred(cond, pred);
2915 add_immBlock_pred(true_block, true_proj);
2916 add_immBlock_pred(false_block, false_proj);
2918 set_cur_block(NULL);
2923 static void create_declaration_entity(declaration_t *declaration,
2924 declaration_kind_t declaration_kind,
2925 ir_type *parent_type)
2927 ident *const id = new_id_from_str(declaration->symbol->string);
2928 type_t *const type = skip_typeref(declaration->type);
2929 ir_type *const irtype = get_ir_type(type);
2930 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
2931 ir_entity *const entity = new_d_entity(parent_type, id, irtype, dbgi);
2933 declaration->declaration_kind = (unsigned char) declaration_kind;
2934 declaration->v.entity = entity;
2935 set_entity_variability(entity, variability_uninitialized);
2936 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
2937 if(parent_type == get_tls_type())
2938 set_entity_allocation(entity, allocation_automatic);
2939 else if(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE)
2940 set_entity_allocation(entity, allocation_static);
2942 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
2943 set_entity_volatility(entity, volatility_is_volatile);
2948 typedef struct type_path_entry_t type_path_entry_t;
2949 struct type_path_entry_t {
2951 ir_initializer_t *initializer;
2953 declaration_t *compound_entry;
2956 typedef struct type_path_t type_path_t;
2957 struct type_path_t {
2958 type_path_entry_t *path;
2963 static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
2965 size_t len = ARR_LEN(path->path);
2967 for(size_t i = 0; i < len; ++i) {
2968 const type_path_entry_t *entry = & path->path[i];
2970 type_t *type = skip_typeref(entry->type);
2971 if(is_type_compound(type)) {
2972 fprintf(stderr, ".%s", entry->compound_entry->symbol->string);
2973 } else if(is_type_array(type)) {
2974 fprintf(stderr, "[%zd]", entry->index);
2976 fprintf(stderr, "-INVALID-");
2979 fprintf(stderr, " (");
2980 print_type(path->top_type);
2981 fprintf(stderr, ")");
2984 static type_path_entry_t *get_type_path_top(const type_path_t *path)
2986 size_t len = ARR_LEN(path->path);
2988 return & path->path[len-1];
2991 static type_path_entry_t *append_to_type_path(type_path_t *path)
2993 size_t len = ARR_LEN(path->path);
2994 ARR_RESIZE(type_path_entry_t, path->path, len+1);
2996 type_path_entry_t *result = & path->path[len];
2997 memset(result, 0, sizeof(result[0]));
3001 static size_t get_compound_size(const compound_type_t *type)
3003 declaration_t *declaration = type->declaration;
3004 declaration_t *member = declaration->scope.declarations;
3006 for( ; member != NULL; member = member->next) {
3009 /* TODO: cache results? */
3014 static ir_initializer_t *get_initializer_entry(type_path_t *path)
3016 type_t *orig_top_type = path->top_type;
3017 type_t *top_type = skip_typeref(orig_top_type);
3019 assert(is_type_compound(top_type) || is_type_array(top_type));
3021 if(ARR_LEN(path->path) == 0) {
3024 type_path_entry_t *top = get_type_path_top(path);
3025 ir_initializer_t *initializer = top->initializer;
3026 return get_initializer_compound_value(initializer, top->index);
3030 static void descend_into_subtype(type_path_t *path)
3032 type_t *orig_top_type = path->top_type;
3033 type_t *top_type = skip_typeref(orig_top_type);
3035 assert(is_type_compound(top_type) || is_type_array(top_type));
3037 ir_initializer_t *initializer = get_initializer_entry(path);
3039 type_path_entry_t *top = append_to_type_path(path);
3040 top->type = top_type;
3044 if(is_type_compound(top_type)) {
3045 declaration_t *declaration = top_type->compound.declaration;
3046 declaration_t *entry = declaration->scope.declarations;
3048 top->compound_entry = entry;
3050 len = get_compound_size(&top_type->compound);
3052 path->top_type = entry->type;
3054 assert(is_type_array(top_type));
3055 assert(top_type->array.size > 0);
3058 path->top_type = top_type->array.element_type;
3059 len = top_type->array.size;
3061 if(initializer == NULL
3062 || get_initializer_kind(initializer) == IR_INITIALIZER_NULL) {
3063 initializer = create_initializer_compound(len);
3064 /* we have to set the entry at the 2nd latest path entry... */
3065 size_t path_len = ARR_LEN(path->path);
3066 assert(path_len >= 1);
3068 type_path_entry_t *entry = & path->path[path_len-2];
3069 ir_initializer_t *tinitializer = entry->initializer;
3070 set_initializer_compound_value(tinitializer, entry->index,
3074 top->initializer = initializer;
3077 static void ascend_from_subtype(type_path_t *path)
3079 type_path_entry_t *top = get_type_path_top(path);
3081 path->top_type = top->type;
3083 size_t len = ARR_LEN(path->path);
3084 ARR_RESIZE(type_path_entry_t, path->path, len-1);
3087 static void walk_designator(type_path_t *path, const designator_t *designator)
3089 /* designators start at current object type */
3090 ARR_RESIZE(type_path_entry_t, path->path, 1);
3092 for( ; designator != NULL; designator = designator->next) {
3093 type_path_entry_t *top = get_type_path_top(path);
3094 type_t *orig_type = top->type;
3095 type_t *type = skip_typeref(orig_type);
3097 if(designator->symbol != NULL) {
3098 assert(is_type_compound(type));
3100 symbol_t *symbol = designator->symbol;
3102 declaration_t *declaration = type->compound.declaration;
3103 declaration_t *iter = declaration->scope.declarations;
3104 for( ; iter != NULL; iter = iter->next, ++index) {
3105 if(iter->symbol == symbol) {
3109 assert(iter != NULL);
3111 top->type = orig_type;
3112 top->compound_entry = iter;
3114 orig_type = iter->type;
3116 expression_t *array_index = designator->array_index;
3117 assert(designator->array_index != NULL);
3118 assert(is_type_array(type));
3119 assert(is_type_valid(array_index->base.type));
3121 long index = fold_constant(array_index);
3124 if(type->array.size_constant == 1) {
3125 long array_size = type->array.size;
3126 assert(index < array_size);
3130 top->type = orig_type;
3131 top->index = (size_t) index;
3132 orig_type = type->array.element_type;
3134 path->top_type = orig_type;
3136 if(designator->next != NULL) {
3137 descend_into_subtype(path);
3141 path->invalid = false;
3144 static void advance_current_object(type_path_t *path)
3147 /* TODO: handle this... */
3148 panic("invalid initializer in ast2firm (excessive elements)");
3152 type_path_entry_t *top = get_type_path_top(path);
3154 type_t *type = skip_typeref(top->type);
3155 if(is_type_union(type)) {
3156 top->compound_entry = NULL;
3157 } else if(is_type_struct(type)) {
3158 declaration_t *entry = top->compound_entry;
3161 entry = entry->next;
3162 top->compound_entry = entry;
3164 path->top_type = entry->type;
3168 assert(is_type_array(type));
3171 if(!type->array.size_constant || top->index < type->array.size) {
3176 /* we're past the last member of the current sub-aggregate, try if we
3177 * can ascend in the type hierarchy and continue with another subobject */
3178 size_t len = ARR_LEN(path->path);
3181 ascend_from_subtype(path);
3182 advance_current_object(path);
3184 path->invalid = true;
3189 static ir_initializer_t *create_ir_initializer(
3190 const initializer_t *initializer, type_t *type);
3192 static ir_initializer_t *create_ir_initializer_value(
3193 const initializer_value_t *initializer)
3195 if (is_type_compound(initializer->value->base.type)) {
3196 panic("initializer creation for compounds not implemented yet");
3198 ir_node *value = expression_to_firm(initializer->value);
3199 return create_initializer_const(value);
3202 static ir_initializer_t *create_ir_initializer_list(
3203 const initializer_list_t *initializer, type_t *type)
3206 memset(&path, 0, sizeof(path));
3207 path.top_type = type;
3208 path.path = NEW_ARR_F(type_path_entry_t, 0);
3210 descend_into_subtype(&path);
3212 for(size_t i = 0; i < initializer->len; ++i) {
3213 const initializer_t *sub_initializer = initializer->initializers[i];
3215 if(sub_initializer->kind == INITIALIZER_DESIGNATOR) {
3216 walk_designator(&path, sub_initializer->designator.designator);
3220 if(sub_initializer->kind == INITIALIZER_VALUE) {
3221 /* we might have to descend into types until we're at a scalar
3224 type_t *orig_top_type = path.top_type;
3225 type_t *top_type = skip_typeref(orig_top_type);
3227 if(is_type_scalar(top_type))
3229 descend_into_subtype(&path);
3233 ir_initializer_t *sub_irinitializer
3234 = create_ir_initializer(sub_initializer, path.top_type);
3236 size_t path_len = ARR_LEN(path.path);
3237 assert(path_len >= 1);
3238 type_path_entry_t *entry = & path.path[path_len-1];
3239 ir_initializer_t *tinitializer = entry->initializer;
3240 set_initializer_compound_value(tinitializer, entry->index,
3243 advance_current_object(&path);
3246 assert(ARR_LEN(path.path) >= 1);
3247 ir_initializer_t *result = path.path[0].initializer;
3248 DEL_ARR_F(path.path);
3253 static ir_initializer_t *create_ir_initializer_string(
3254 const initializer_string_t *initializer, type_t *type)
3256 type = skip_typeref(type);
3258 size_t string_len = initializer->string.size;
3259 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3260 size_t len = type->array.size;
3261 ir_initializer_t *irinitializer = create_initializer_compound(len);
3263 const char *string = initializer->string.begin;
3264 ir_mode *mode = get_type_mode(ir_type_const_char);
3266 for(size_t i = 0; i < len; ++i) {
3271 tarval *tv = new_tarval_from_long(c, mode);
3272 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3274 set_initializer_compound_value(irinitializer, i, char_initializer);
3277 return irinitializer;
3280 static ir_initializer_t *create_ir_initializer_wide_string(
3281 const initializer_wide_string_t *initializer, type_t *type)
3283 size_t string_len = initializer->string.size;
3284 assert(type->kind == TYPE_ARRAY && type->array.size_constant);
3285 size_t len = type->array.size;
3286 ir_initializer_t *irinitializer = create_initializer_compound(len);
3288 const wchar_rep_t *string = initializer->string.begin;
3289 ir_mode *mode = get_type_mode(ir_type_wchar_t);
3291 for(size_t i = 0; i < len; ++i) {
3293 if(i < string_len) {
3296 tarval *tv = new_tarval_from_long(c, mode);
3297 ir_initializer_t *char_initializer = create_initializer_tarval(tv);
3299 set_initializer_compound_value(irinitializer, i, char_initializer);
3302 return irinitializer;
3305 static ir_initializer_t *create_ir_initializer(
3306 const initializer_t *initializer, type_t *type)
3308 switch(initializer->kind) {
3309 case INITIALIZER_STRING:
3310 return create_ir_initializer_string(&initializer->string, type);
3312 case INITIALIZER_WIDE_STRING:
3313 return create_ir_initializer_wide_string(&initializer->wide_string,
3316 case INITIALIZER_LIST:
3317 return create_ir_initializer_list(&initializer->list, type);
3319 case INITIALIZER_VALUE:
3320 return create_ir_initializer_value(&initializer->value);
3322 case INITIALIZER_DESIGNATOR:
3323 panic("unexpected designator initializer found");
3325 panic("unknown initializer");
3328 static void create_dynamic_null_initializer(ir_type *type, dbg_info *dbgi,
3331 if (is_atomic_type(type)) {
3332 ir_mode *mode = get_type_mode(type);
3333 tarval *zero = get_mode_null(mode);
3334 ir_node *cnst = new_d_Const(dbgi, mode, zero);
3336 /* TODO: bitfields */
3337 ir_node *mem = get_store();
3338 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3339 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3342 assert(is_compound_type(type));
3345 if(is_Array_type(type)) {
3346 assert(has_array_upper_bound(type, 0));
3347 n_members = get_array_upper_bound_int(type, 0);
3349 n_members = get_compound_n_members(type);
3352 for(int i = 0; i < n_members; ++i) {
3355 if(is_Array_type(type)) {
3356 ir_entity *entity = get_array_element_entity(type);
3357 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3358 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3359 ir_node *in[1] = { cnst };
3360 irtype = get_array_element_type(type);
3361 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3363 ir_entity *member = get_compound_member(type, i);
3365 irtype = get_entity_type(member);
3366 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3369 create_dynamic_null_initializer(irtype, dbgi, addr);
3374 static void create_dynamic_initializer_sub(ir_initializer_t *initializer,
3375 ir_type *type, dbg_info *dbgi, ir_node *base_addr)
3377 switch(get_initializer_kind(initializer)) {
3378 case IR_INITIALIZER_NULL: {
3379 create_dynamic_null_initializer(type, dbgi, base_addr);
3382 case IR_INITIALIZER_CONST: {
3383 ir_node *node = get_initializer_const_value(initializer);
3384 ir_mode *mode = get_irn_mode(node);
3385 assert(get_type_mode(type) == mode);
3387 /* TODO: bitfields... */
3388 ir_node *mem = get_store();
3389 ir_node *store = new_d_Store(dbgi, mem, base_addr, node);
3390 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3394 case IR_INITIALIZER_TARVAL: {
3395 tarval *tv = get_initializer_tarval_value(initializer);
3396 ir_mode *mode = get_tarval_mode(tv);
3397 ir_node *cnst = new_d_Const(dbgi, mode, tv);
3398 assert(get_type_mode(type) == mode);
3400 /* TODO: bitfields... */
3401 ir_node *mem = get_store();
3402 ir_node *store = new_d_Store(dbgi, mem, base_addr, cnst);
3403 ir_node *proj_m = new_Proj(store, mode_M, pn_Store_M);
3407 case IR_INITIALIZER_COMPOUND: {
3408 assert(is_compound_type(type));
3410 if(is_Array_type(type)) {
3411 assert(has_array_upper_bound(type, 0));
3412 n_members = get_array_upper_bound_int(type, 0);
3414 n_members = get_compound_n_members(type);
3417 if(get_initializer_compound_n_entries(initializer)
3418 != (unsigned) n_members)
3419 panic("initializer doesn't match compound type");
3421 for(int i = 0; i < n_members; ++i) {
3424 if(is_Array_type(type)) {
3425 ir_entity *entity = get_array_element_entity(type);
3426 tarval *index_tv = new_tarval_from_long(i, mode_uint);
3427 ir_node *cnst = new_d_Const(dbgi, mode_uint, index_tv);
3428 ir_node *in[1] = { cnst };
3429 irtype = get_array_element_type(type);
3430 addr = new_d_Sel(dbgi, new_NoMem(), base_addr, 1, in, entity);
3432 ir_entity *member = get_compound_member(type, i);
3434 irtype = get_entity_type(member);
3435 addr = new_d_simpleSel(dbgi, new_NoMem(), base_addr, member);
3438 ir_initializer_t *sub_init
3439 = get_initializer_compound_value(initializer, i);
3441 create_dynamic_initializer_sub(sub_init, irtype, dbgi, addr);
3447 panic("invalid IR_INITIALIZER found");
3450 static void create_dynamic_initializer(ir_initializer_t *initializer,
3451 dbg_info *dbgi, ir_entity *entity)
3453 ir_node *frame = get_local_frame(entity);
3454 ir_node *base_addr = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
3455 ir_type *type = get_entity_type(entity);
3457 create_dynamic_initializer_sub(initializer, type, dbgi, base_addr);
3460 static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
3461 ir_entity *entity, type_t *type)
3463 ir_node *memory = get_store();
3464 ir_node *nomem = new_NoMem();
3465 ir_node *frame = get_irg_frame(current_ir_graph);
3466 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
3468 if(initializer->kind == INITIALIZER_VALUE) {
3469 initializer_value_t *initializer_value = &initializer->value;
3471 ir_node *value = expression_to_firm(initializer_value->value);
3472 type = skip_typeref(type);
3473 assign_value(dbgi, addr, type, value);
3477 if(!is_constant_initializer(initializer)) {
3478 ir_initializer_t *irinitializer
3479 = create_ir_initializer(initializer, type);
3481 create_dynamic_initializer(irinitializer, dbgi, entity);
3485 /* create the ir_initializer */
3486 ir_graph *const old_current_ir_graph = current_ir_graph;
3487 current_ir_graph = get_const_code_irg();
3489 ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
3491 assert(current_ir_graph == get_const_code_irg());
3492 current_ir_graph = old_current_ir_graph;
3494 /* create a "template" entity which is copied to the entity on the stack */
3495 ident *const id = id_unique("initializer.%u");
3496 ir_type *const irtype = get_ir_type(type);
3497 ir_type *const global_type = get_glob_type();
3498 ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
3499 set_entity_ld_ident(init_entity, id);
3501 set_entity_variability(init_entity, variability_initialized);
3502 set_entity_visibility(init_entity, visibility_local);
3503 set_entity_allocation(init_entity, allocation_static);
3505 set_entity_initializer(init_entity, irinitializer);
3507 ir_node *const src_addr = create_symconst(dbgi, mode_P_data, init_entity);
3508 ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
3510 ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
3511 set_store(copyb_mem);
3514 static void create_initializer_local_variable_entity(declaration_t *declaration)
3516 initializer_t *initializer = declaration->init.initializer;
3517 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3518 ir_entity *entity = declaration->v.entity;
3519 type_t *type = declaration->type;
3520 create_local_initializer(initializer, dbgi, entity, type);
3523 static void create_declaration_initializer(declaration_t *declaration)
3525 initializer_t *initializer = declaration->init.initializer;
3526 if(initializer == NULL)
3529 declaration_kind_t declaration_kind
3530 = (declaration_kind_t) declaration->declaration_kind;
3531 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY) {
3532 create_initializer_local_variable_entity(declaration);
3536 if(initializer->kind == INITIALIZER_VALUE) {
3537 initializer_value_t *initializer_value = &initializer->value;
3539 = get_dbg_info(&declaration->source_position);
3541 ir_node *value = expression_to_firm(initializer_value->value);
3542 value = do_strict_conv(dbgi, value);
3544 if(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
3545 set_value(declaration->v.value_number, value);
3547 assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3549 ir_entity *entity = declaration->v.entity;
3551 set_entity_variability(entity, variability_initialized);
3552 set_atomic_ent_value(entity, value);
3555 assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY
3556 || declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
3558 ir_entity *entity = declaration->v.entity;
3559 ir_initializer_t *irinitializer
3560 = create_ir_initializer(initializer, declaration->type);
3562 set_entity_variability(entity, variability_initialized);
3563 set_entity_initializer(entity, irinitializer);
3567 static void create_variable_length_array(declaration_t *declaration)
3569 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
3570 type_t *type = declaration->type;
3571 ir_node *mem = get_store();
3572 ir_type *el_type = get_ir_type(type->array.element_type);
3574 /* make sure size_node is calculated */
3575 get_type_size(type);
3576 ir_node *elems = type->array.size_node;
3577 ir_node *alloc = new_d_Alloc(dbgi, mem, elems, el_type, stack_alloc);
3579 ir_node *proj_m = new_d_Proj(dbgi, alloc, mode_M, pn_Alloc_M);
3580 ir_node *addr = new_d_Proj(dbgi, alloc, mode_P_data, pn_Alloc_res);
3583 /* initializers are not allowed for VLAs */
3584 assert(declaration->init.initializer == NULL);
3586 declaration->declaration_kind = DECLARATION_KIND_VARIABLE_LENGTH_ARRAY;
3587 declaration->v.vla_base = addr;
3589 /* TODO: record VLA somewhere so we create the free node when we leave
3594 * Creates a Firm local variable from a declaration.
3596 static void create_local_variable(declaration_t *declaration)
3598 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3600 bool needs_entity = declaration->address_taken;
3601 type_t *type = skip_typeref(declaration->type);
3603 /* is it a variable length array? */
3604 if(is_type_array(type) && !type->array.size_constant) {
3605 create_variable_length_array(declaration);
3607 } else if(is_type_array(type) || is_type_compound(type)) {
3608 needs_entity = true;
3609 } else if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3610 needs_entity = true;
3614 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
3615 create_declaration_entity(declaration,
3616 DECLARATION_KIND_LOCAL_VARIABLE_ENTITY,
3619 declaration->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
3620 declaration->v.value_number = next_value_number_function;
3621 set_irg_loc_description(current_ir_graph, next_value_number_function, declaration);
3622 ++next_value_number_function;
3625 create_declaration_initializer(declaration);
3628 static void create_local_static_variable(declaration_t *declaration)
3630 assert(declaration->declaration_kind == DECLARATION_KIND_UNKNOWN);
3632 type_t *const type = skip_typeref(declaration->type);
3633 ir_type *const global_type = get_glob_type();
3634 ir_type *const irtype = get_ir_type(type);
3635 dbg_info *const dbgi = get_dbg_info(&declaration->source_position);
3637 size_t l = strlen(declaration->symbol->string);
3638 char buf[l + sizeof(".%u")];
3639 snprintf(buf, sizeof(buf), "%s.%%u", declaration->symbol->string);
3640 ident *const id = id_unique(buf);
3642 ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
3644 if(type->base.qualifiers & TYPE_QUALIFIER_VOLATILE) {
3645 set_entity_volatility(entity, volatility_is_volatile);
3648 declaration->declaration_kind = DECLARATION_KIND_GLOBAL_VARIABLE;
3649 declaration->v.entity = entity;
3650 set_entity_ld_ident(entity, create_ld_ident(entity, declaration));
3651 set_entity_variability(entity, variability_uninitialized);
3652 set_entity_visibility(entity, visibility_local);
3653 set_entity_allocation(entity, allocation_static);
3655 ir_graph *const old_current_ir_graph = current_ir_graph;
3656 current_ir_graph = get_const_code_irg();
3658 create_declaration_initializer(declaration);
3660 assert(current_ir_graph == get_const_code_irg());
3661 current_ir_graph = old_current_ir_graph;
3666 static void return_statement_to_firm(return_statement_t *statement)
3668 if(get_cur_block() == NULL)
3671 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
3672 ir_type *func_irtype = get_ir_type(current_function_decl->type);
3677 if(get_method_n_ress(func_irtype) > 0) {
3678 ir_type *res_type = get_method_res_type(func_irtype, 0);
3680 if(statement->value != NULL) {
3681 ir_node *node = expression_to_firm(statement->value);
3682 node = do_strict_conv(dbgi, node);
3686 if(is_compound_type(res_type)) {
3689 mode = get_type_mode(res_type);
3691 in[0] = new_Unknown(mode);
3695 /* build return_value for its side effects */
3696 if(statement->value != NULL) {
3697 expression_to_firm(statement->value);
3702 ir_node *store = get_store();
3703 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
3705 ir_node *end_block = get_irg_end_block(current_ir_graph);
3706 add_immBlock_pred(end_block, ret);
3708 set_cur_block(NULL);
3711 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
3713 if(get_cur_block() == NULL)
3716 return expression_to_firm(statement->expression);
3719 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
3721 ir_node *result = NULL;
3722 statement_t *statement = compound->statements;
3723 for( ; statement != NULL; statement = statement->base.next) {
3724 //context2firm(&statement->scope);
3726 if(statement->base.next == NULL
3727 && statement->kind == STATEMENT_EXPRESSION) {
3728 result = expression_statement_to_firm(
3729 &statement->expression);
3732 statement_to_firm(statement);
3738 static void create_global_variable(declaration_t *declaration)
3742 switch ((storage_class_tag_t)declaration->storage_class) {
3743 case STORAGE_CLASS_STATIC:
3744 vis = visibility_local;
3747 case STORAGE_CLASS_EXTERN:
3748 vis = visibility_external_allocated;
3751 case STORAGE_CLASS_NONE:
3752 vis = visibility_external_visible;
3755 case STORAGE_CLASS_THREAD:
3756 vis = visibility_external_visible;
3759 case STORAGE_CLASS_THREAD_EXTERN:
3760 vis = visibility_external_allocated;
3763 case STORAGE_CLASS_THREAD_STATIC:
3764 vis = visibility_local;
3768 var_type = get_tls_type();
3772 var_type = get_glob_type();
3776 create_declaration_entity(declaration,
3777 DECLARATION_KIND_GLOBAL_VARIABLE,
3779 set_entity_visibility(declaration->v.entity, vis);
3783 case STORAGE_CLASS_TYPEDEF:
3784 case STORAGE_CLASS_AUTO:
3785 case STORAGE_CLASS_REGISTER:
3786 case STORAGE_CLASS_ENUM_ENTRY:
3789 panic("Invalid storage class for global variable");
3792 static void create_local_declaration(declaration_t *declaration)
3794 if(declaration->symbol == NULL)
3797 type_t *type = skip_typeref(declaration->type);
3799 switch ((storage_class_tag_t) declaration->storage_class) {
3800 case STORAGE_CLASS_STATIC:
3801 create_local_static_variable(declaration);
3803 case STORAGE_CLASS_EXTERN:
3804 create_global_variable(declaration);
3805 create_declaration_initializer(declaration);
3807 case STORAGE_CLASS_NONE:
3808 case STORAGE_CLASS_AUTO:
3809 case STORAGE_CLASS_REGISTER:
3810 if(is_type_function(type)) {
3811 if(declaration->init.statement != NULL) {
3812 panic("nested functions not supported yet");
3814 get_function_entity(declaration);
3817 create_local_variable(declaration);
3820 case STORAGE_CLASS_ENUM_ENTRY:
3821 case STORAGE_CLASS_TYPEDEF:
3822 case STORAGE_CLASS_THREAD:
3823 case STORAGE_CLASS_THREAD_EXTERN:
3824 case STORAGE_CLASS_THREAD_STATIC:
3827 panic("invalid storage class found");
3830 static void declaration_statement_to_firm(declaration_statement_t *statement)
3832 declaration_t *declaration = statement->declarations_begin;
3833 declaration_t *end = statement->declarations_end->next;
3834 for( ; declaration != end; declaration = declaration->next) {
3835 if(declaration->namespc != NAMESPACE_NORMAL)
3837 create_local_declaration(declaration);
3841 static void if_statement_to_firm(if_statement_t *statement)
3843 ir_node *cur_block = get_cur_block();
3845 ir_node *fallthrough_block = new_immBlock();
3847 /* the true (blocks) */
3848 ir_node *true_block;
3849 if (statement->true_statement != NULL) {
3850 true_block = new_immBlock();
3851 statement_to_firm(statement->true_statement);
3852 if(get_cur_block() != NULL) {
3853 ir_node *jmp = new_Jmp();
3854 add_immBlock_pred(fallthrough_block, jmp);
3857 true_block = fallthrough_block;
3860 /* the false (blocks) */
3861 ir_node *false_block;
3862 if(statement->false_statement != NULL) {
3863 false_block = new_immBlock();
3865 statement_to_firm(statement->false_statement);
3866 if(get_cur_block() != NULL) {
3867 ir_node *jmp = new_Jmp();
3868 add_immBlock_pred(fallthrough_block, jmp);
3871 false_block = fallthrough_block;
3874 /* create the condition */
3875 if(cur_block != NULL) {
3876 set_cur_block(cur_block);
3877 create_condition_evaluation(statement->condition, true_block,
3881 mature_immBlock(true_block);
3882 if(false_block != fallthrough_block) {
3883 mature_immBlock(false_block);
3885 mature_immBlock(fallthrough_block);
3887 set_cur_block(fallthrough_block);
3890 static void while_statement_to_firm(while_statement_t *statement)
3892 ir_node *jmp = NULL;
3893 if(get_cur_block() != NULL) {
3897 /* create the header block */
3898 ir_node *header_block = new_immBlock();
3900 add_immBlock_pred(header_block, jmp);
3903 /* the false block */
3904 ir_node *false_block = new_immBlock();
3907 ir_node *body_block;
3908 if (statement->body != NULL) {
3909 ir_node *old_continue_label = continue_label;
3910 ir_node *old_break_label = break_label;
3911 continue_label = header_block;
3912 break_label = false_block;
3914 body_block = new_immBlock();
3915 statement_to_firm(statement->body);
3917 assert(continue_label == header_block);
3918 assert(break_label == false_block);
3919 continue_label = old_continue_label;
3920 break_label = old_break_label;
3922 if(get_cur_block() != NULL) {
3924 add_immBlock_pred(header_block, jmp);
3927 body_block = header_block;
3930 /* create the condition */
3931 set_cur_block(header_block);
3933 create_condition_evaluation(statement->condition, body_block, false_block);
3934 mature_immBlock(body_block);
3935 mature_immBlock(false_block);
3936 mature_immBlock(header_block);
3938 set_cur_block(false_block);
3941 static void do_while_statement_to_firm(do_while_statement_t *statement)
3943 ir_node *jmp = NULL;
3944 if(get_cur_block() != NULL) {
3948 /* create the header block */
3949 ir_node *header_block = new_immBlock();
3951 /* the false block */
3952 ir_node *false_block = new_immBlock();
3955 ir_node *body_block = new_immBlock();
3957 add_immBlock_pred(body_block, jmp);
3960 if (statement->body != NULL) {
3961 ir_node *old_continue_label = continue_label;
3962 ir_node *old_break_label = break_label;
3963 continue_label = header_block;
3964 break_label = false_block;
3966 statement_to_firm(statement->body);
3968 assert(continue_label == header_block);
3969 assert(break_label == false_block);
3970 continue_label = old_continue_label;
3971 break_label = old_break_label;
3973 if (get_cur_block() == NULL) {
3974 mature_immBlock(header_block);
3975 mature_immBlock(body_block);
3976 mature_immBlock(false_block);
3981 ir_node *body_jmp = new_Jmp();
3982 add_immBlock_pred(header_block, body_jmp);
3983 mature_immBlock(header_block);
3985 /* create the condition */
3986 set_cur_block(header_block);
3988 create_condition_evaluation(statement->condition, body_block, false_block);
3989 mature_immBlock(body_block);
3990 mature_immBlock(false_block);
3991 mature_immBlock(header_block);
3993 set_cur_block(false_block);
3996 static void for_statement_to_firm(for_statement_t *statement)
3998 ir_node *jmp = NULL;
3999 if (get_cur_block() != NULL) {
4000 if(statement->initialisation != NULL) {
4001 expression_to_firm(statement->initialisation);
4004 /* create declarations */
4005 declaration_t *declaration = statement->scope.declarations;
4006 for( ; declaration != NULL; declaration = declaration->next) {
4007 create_local_declaration(declaration);
4014 /* create the step block */
4015 ir_node *const step_block = new_immBlock();
4016 if (statement->step != NULL) {
4017 expression_to_firm(statement->step);
4019 ir_node *const step_jmp = new_Jmp();
4021 /* create the header block */
4022 ir_node *const header_block = new_immBlock();
4024 add_immBlock_pred(header_block, jmp);
4026 add_immBlock_pred(header_block, step_jmp);
4028 /* the false block */
4029 ir_node *const false_block = new_immBlock();
4032 ir_node * body_block;
4033 if (statement->body != NULL) {
4034 ir_node *const old_continue_label = continue_label;
4035 ir_node *const old_break_label = break_label;
4036 continue_label = step_block;
4037 break_label = false_block;
4039 body_block = new_immBlock();
4040 statement_to_firm(statement->body);
4042 assert(continue_label == step_block);
4043 assert(break_label == false_block);
4044 continue_label = old_continue_label;
4045 break_label = old_break_label;
4047 if (get_cur_block() != NULL) {
4049 add_immBlock_pred(step_block, jmp);
4052 body_block = step_block;
4055 /* create the condition */
4056 set_cur_block(header_block);
4057 if (statement->condition != NULL) {
4058 create_condition_evaluation(statement->condition, body_block,
4061 keep_alive(header_block);
4063 add_immBlock_pred(body_block, jmp);
4066 mature_immBlock(body_block);
4067 mature_immBlock(false_block);
4068 mature_immBlock(step_block);
4069 mature_immBlock(header_block);
4070 mature_immBlock(false_block);
4072 set_cur_block(false_block);
4075 static void create_jump_statement(const statement_t *statement,
4076 ir_node *target_block)
4078 if(get_cur_block() == NULL)
4081 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4082 ir_node *jump = new_d_Jmp(dbgi);
4083 add_immBlock_pred(target_block, jump);
4085 set_cur_block(NULL);
4088 static void switch_statement_to_firm(const switch_statement_t *statement)
4090 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4092 ir_node *expression = expression_to_firm(statement->expression);
4093 ir_node *cond = new_d_Cond(dbgi, expression);
4094 ir_node *break_block = new_immBlock();
4096 set_cur_block(NULL);
4098 ir_node *const old_switch_cond = current_switch_cond;
4099 ir_node *const old_break_label = break_label;
4100 const bool old_saw_default_label = saw_default_label;
4101 saw_default_label = false;
4102 current_switch_cond = cond;
4103 break_label = break_block;
4105 if (statement->body != NULL) {
4106 statement_to_firm(statement->body);
4109 if(get_cur_block() != NULL) {
4110 ir_node *jmp = new_Jmp();
4111 add_immBlock_pred(break_block, jmp);
4114 if (!saw_default_label) {
4115 set_cur_block(get_nodes_block(cond));
4116 ir_node *const proj = new_d_defaultProj(dbgi, cond,
4117 MAGIC_DEFAULT_PN_NUMBER);
4118 add_immBlock_pred(break_block, proj);
4121 assert(current_switch_cond == cond);
4122 assert(break_label == break_block);
4123 current_switch_cond = old_switch_cond;
4124 break_label = old_break_label;
4125 saw_default_label = old_saw_default_label;
4127 mature_immBlock(break_block);
4128 set_cur_block(break_block);
4131 static void case_label_to_firm(const case_label_statement_t *statement)
4133 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
4135 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
4137 /* let's create a node and hope firm constant folding creates a Const
4140 ir_node *old_block = get_nodes_block(current_switch_cond);
4141 ir_node *block = new_immBlock();
4143 set_cur_block(old_block);
4144 if(statement->expression != NULL) {
4145 long start_pn = fold_constant(statement->expression);
4146 long end_pn = start_pn;
4147 if (statement->end_range != NULL) {
4148 end_pn = fold_constant(statement->end_range);
4150 assert(start_pn <= end_pn);
4151 /* create jumps for all cases in the given range */
4152 for (long pn = start_pn; pn <= end_pn; ++pn) {
4153 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
4154 /* oops someone detected our cheating... */
4155 panic("magic default pn used");
4157 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
4158 add_immBlock_pred(block, proj);
4161 saw_default_label = true;
4162 proj = new_d_defaultProj(dbgi, current_switch_cond,
4163 MAGIC_DEFAULT_PN_NUMBER);
4165 add_immBlock_pred(block, proj);
4168 if (fallthrough != NULL) {
4169 add_immBlock_pred(block, fallthrough);
4171 mature_immBlock(block);
4172 set_cur_block(block);
4174 if(statement->statement != NULL) {
4175 statement_to_firm(statement->statement);
4179 static ir_node *get_label_block(declaration_t *label)
4181 assert(label->namespc == NAMESPACE_LABEL);
4183 if(label->declaration_kind == DECLARATION_KIND_LABEL_BLOCK) {
4184 return label->v.block;
4186 assert(label->declaration_kind == DECLARATION_KIND_UNKNOWN);
4188 ir_node *old_cur_block = get_cur_block();
4189 ir_node *block = new_immBlock();
4190 set_cur_block(old_cur_block);
4192 label->declaration_kind = DECLARATION_KIND_LABEL_BLOCK;
4193 label->v.block = block;
4195 ARR_APP1(ir_node *, imature_blocks, block);
4200 static void label_to_firm(const label_statement_t *statement)
4202 ir_node *block = get_label_block(statement->label);
4204 if(get_cur_block() != NULL) {
4205 ir_node *jmp = new_Jmp();
4206 add_immBlock_pred(block, jmp);
4209 set_cur_block(block);
4212 if(statement->statement != NULL) {
4213 statement_to_firm(statement->statement);
4217 static void goto_to_firm(const goto_statement_t *statement)
4219 if(get_cur_block() == NULL)
4222 ir_node *block = get_label_block(statement->label);
4223 ir_node *jmp = new_Jmp();
4224 add_immBlock_pred(block, jmp);
4226 set_cur_block(NULL);
4229 typedef enum modifier_t {
4230 ASM_MODIFIER_WRITE_ONLY = 1 << 0,
4231 ASM_MODIFIER_READ_WRITE = 1 << 1,
4232 ASM_MODIFIER_COMMUTATIVE = 1 << 2,
4233 ASM_MODIFIER_EARLYCLOBBER = 1 << 3,
4236 static void asm_statement_to_firm(const asm_statement_t *statement)
4239 fprintf(stderr, "WARNING asm not implemented yet!\n");
4241 bool needs_memory = false;
4243 size_t n_clobbers = 0;
4244 asm_clobber_t *clobber = statement->clobbers;
4245 for( ; clobber != NULL; clobber = clobber->next) {
4246 if(strcmp(clobber->clobber, "memory") == 0) {
4247 needs_memory = true;
4251 ident *id = new_id_from_str(clobber->clobber);
4252 obstack_ptr_grow(&asm_obst, id);
4255 assert(obstack_object_size(&asm_obst) == n_clobbers * sizeof(ident*));
4256 ident **clobbers = NULL;
4257 if(n_clobbers > 0) {
4258 clobbers = obstack_finish(&asm_obst);
4261 /* find and count input and output constraints */
4262 asm_constraint_t *constraint = statement->inputs;
4263 for( ; constraint != NULL; constraint = constraint->next) {
4265 bool supports_memop = false;
4266 for(const char *c = constraint->constraints; *c != 0; ++c) {
4267 /* TODO: improve error messages */
4271 panic("multiple alternative assembler constraints not "
4279 supports_memop = true;
4280 obstack_1grow(&asm_obst, *c);
4283 if(modifiers & ASM_MODIFIER_READ_WRITE)
4284 panic("inconsistent register constraints");
4285 modifiers |= ASM_MODIFIER_WRITE_ONLY;
4288 if(modifiers & ASM_MODIFIER_WRITE_ONLY)
4289 panic("inconsistent register constraints");
4290 modifiers |= ASM_MODIFIER_READ_WRITE;
4293 modifiers |= ASM_MODIFIER_EARLYCLOBBER;
4294 panic("early clobber assembler constraint not supported yet");
4297 modifiers |= ASM_MODIFIER_COMMUTATIVE;
4298 panic("commutative assembler constraint not supported yet");
4301 /* skip register preferences stuff... */
4302 while(*c != 0 && *c != ',')
4306 /* skip register preferences stuff... */
4310 obstack_1grow(&asm_obst, *c);
4314 obstack_1grow(&asm_obst, '\0');
4315 const char *constraint_string = obstack_finish(&asm_obst);
4317 needs_memory |= supports_memop;
4318 if(supports_memop) {
4325 static void ms_try_statement_to_firm(ms_try_statement_t *statement) {
4326 statement_to_firm(statement->try_statement);
4327 warningf(&statement->base.source_position, "structured exception handling ignored");
4330 static void leave_statement_to_firm(leave_statement_t *statement) {
4331 errorf(&statement->base.source_position, "__leave not supported yet");
4334 static void statement_to_firm(statement_t *statement)
4336 switch(statement->kind) {
4337 case STATEMENT_INVALID:
4338 panic("invalid statement found");
4340 case STATEMENT_EMPTY:
4343 case STATEMENT_COMPOUND:
4344 compound_statement_to_firm(&statement->compound);
4346 case STATEMENT_RETURN:
4347 return_statement_to_firm(&statement->returns);
4349 case STATEMENT_EXPRESSION:
4350 expression_statement_to_firm(&statement->expression);
4353 if_statement_to_firm(&statement->ifs);
4355 case STATEMENT_WHILE:
4356 while_statement_to_firm(&statement->whiles);
4358 case STATEMENT_DO_WHILE:
4359 do_while_statement_to_firm(&statement->do_while);
4361 case STATEMENT_DECLARATION:
4362 declaration_statement_to_firm(&statement->declaration);
4364 case STATEMENT_BREAK:
4365 create_jump_statement(statement, break_label);
4367 case STATEMENT_CONTINUE:
4368 create_jump_statement(statement, continue_label);
4370 case STATEMENT_SWITCH:
4371 switch_statement_to_firm(&statement->switchs);
4373 case STATEMENT_CASE_LABEL:
4374 case_label_to_firm(&statement->case_label);
4377 for_statement_to_firm(&statement->fors);
4379 case STATEMENT_LABEL:
4380 label_to_firm(&statement->label);
4382 case STATEMENT_GOTO:
4383 goto_to_firm(&statement->gotos);
4386 asm_statement_to_firm(&statement->asms);
4388 case STATEMENT_MS_TRY:
4389 ms_try_statement_to_firm(&statement->ms_try);
4391 case STATEMENT_LEAVE:
4392 leave_statement_to_firm(&statement->leave);
4395 panic("Statement not implemented\n");
4398 static int count_decls_in_expression(const expression_t *expression);
4400 static int count_local_declarations(const declaration_t * decl,
4401 const declaration_t *const end)
4404 for (; decl != end; decl = decl->next) {
4405 if(decl->namespc != NAMESPACE_NORMAL)
4407 const type_t *type = skip_typeref(decl->type);
4408 if (!decl->address_taken && is_type_scalar(type))
4410 const initializer_t *initializer = decl->init.initializer;
4411 /* FIXME: should walk initializer hierarchies... */
4412 if(initializer != NULL && initializer->kind == INITIALIZER_VALUE) {
4413 count += count_decls_in_expression(initializer->value.value);
4419 static int count_decls_in_expression(const expression_t *expression) {
4422 if(expression == NULL)
4425 switch((expression_kind_t) expression->base.kind) {
4426 case EXPR_STATEMENT:
4427 return count_decls_in_stmts(expression->statement.statement);
4429 int count_left = count_decls_in_expression(expression->binary.left);
4430 int count_right = count_decls_in_expression(expression->binary.right);
4431 return count_left + count_right;
4434 return count_decls_in_expression(expression->unary.value);
4436 call_argument_t *argument = expression->call.arguments;
4437 for( ; argument != NULL; argument = argument->next) {
4438 count += count_decls_in_expression(argument->expression);
4445 panic("unexpected expression kind");
4447 case EXPR_COMPOUND_LITERAL:
4451 case EXPR_CONDITIONAL:
4452 count += count_decls_in_expression(expression->conditional.condition);
4453 count += count_decls_in_expression(expression->conditional.true_expression);
4454 count += count_decls_in_expression(expression->conditional.false_expression);
4457 case EXPR_BUILTIN_PREFETCH:
4458 count += count_decls_in_expression(expression->builtin_prefetch.adr);
4459 count += count_decls_in_expression(expression->builtin_prefetch.rw);
4460 count += count_decls_in_expression(expression->builtin_prefetch.locality);
4463 case EXPR_BUILTIN_CONSTANT_P:
4464 count += count_decls_in_expression(expression->builtin_constant.value);
4468 count += count_decls_in_expression(expression->select.compound);
4471 case EXPR_ARRAY_ACCESS:
4472 count += count_decls_in_expression(expression->array_access.array_ref);
4473 count += count_decls_in_expression(expression->array_access.index);
4476 case EXPR_CLASSIFY_TYPE:
4477 count += count_decls_in_expression(expression->classify_type.type_expression);
4481 case EXPR_ALIGNOF: {
4482 expression_t *tp_expression = expression->typeprop.tp_expression;
4483 if (tp_expression != NULL) {
4484 count += count_decls_in_expression(tp_expression);
4490 case EXPR_REFERENCE:
4492 case EXPR_CHARACTER_CONSTANT:
4493 case EXPR_WIDE_CHARACTER_CONSTANT:
4494 case EXPR_STRING_LITERAL:
4495 case EXPR_WIDE_STRING_LITERAL:
4497 case EXPR_BUILTIN_SYMBOL:
4503 /* TODO FIXME: finish/fix that firm patch that allows dynamic value numbers
4504 * (or implement all the missing expressions here/implement a walker)
4510 static int count_decls_in_stmts(const statement_t *stmt)
4513 for (; stmt != NULL; stmt = stmt->base.next) {
4514 switch (stmt->kind) {
4515 case STATEMENT_EMPTY:
4518 case STATEMENT_DECLARATION: {
4519 const declaration_statement_t *const decl_stmt = &stmt->declaration;
4520 count += count_local_declarations(decl_stmt->declarations_begin,
4521 decl_stmt->declarations_end->next);
4525 case STATEMENT_COMPOUND: {
4526 const compound_statement_t *const comp =
4528 count += count_decls_in_stmts(comp->statements);
4532 case STATEMENT_IF: {
4533 const if_statement_t *const if_stmt = &stmt->ifs;
4534 count += count_decls_in_expression(if_stmt->condition);
4535 count += count_decls_in_stmts(if_stmt->true_statement);
4536 count += count_decls_in_stmts(if_stmt->false_statement);
4540 case STATEMENT_SWITCH: {
4541 const switch_statement_t *const switch_stmt = &stmt->switchs;
4542 count += count_decls_in_expression(switch_stmt->expression);
4543 count += count_decls_in_stmts(switch_stmt->body);
4547 case STATEMENT_LABEL: {
4548 const label_statement_t *const label_stmt = &stmt->label;
4549 if(label_stmt->statement != NULL) {
4550 count += count_decls_in_stmts(label_stmt->statement);
4555 case STATEMENT_WHILE: {
4556 const while_statement_t *const while_stmt = &stmt->whiles;
4557 count += count_decls_in_expression(while_stmt->condition);
4558 count += count_decls_in_stmts(while_stmt->body);
4562 case STATEMENT_DO_WHILE: {
4563 const do_while_statement_t *const do_while_stmt = &stmt->do_while;
4564 count += count_decls_in_expression(do_while_stmt->condition);
4565 count += count_decls_in_stmts(do_while_stmt->body);
4569 case STATEMENT_FOR: {
4570 const for_statement_t *const for_stmt = &stmt->fors;
4571 count += count_local_declarations(for_stmt->scope.declarations, NULL);
4572 count += count_decls_in_expression(for_stmt->initialisation);
4573 count += count_decls_in_expression(for_stmt->condition);
4574 count += count_decls_in_expression(for_stmt->step);
4575 count += count_decls_in_stmts(for_stmt->body);
4579 case STATEMENT_CASE_LABEL: {
4580 const case_label_statement_t *label = &stmt->case_label;
4581 count += count_decls_in_expression(label->expression);
4582 if(label->statement != NULL) {
4583 count += count_decls_in_stmts(label->statement);
4589 case STATEMENT_BREAK:
4590 case STATEMENT_CONTINUE:
4593 case STATEMENT_EXPRESSION: {
4594 const expression_statement_t *expr_stmt = &stmt->expression;
4595 count += count_decls_in_expression(expr_stmt->expression);
4599 case STATEMENT_GOTO:
4600 case STATEMENT_LEAVE:
4601 case STATEMENT_INVALID:
4604 case STATEMENT_RETURN: {
4605 const return_statement_t *ret_stmt = &stmt->returns;
4606 count += count_decls_in_expression(ret_stmt->value);
4610 case STATEMENT_MS_TRY: {
4611 const ms_try_statement_t *const try_stmt = &stmt->ms_try;
4612 count += count_decls_in_stmts(try_stmt->try_statement);
4613 if(try_stmt->except_expression != NULL)
4614 count += count_decls_in_expression(try_stmt->except_expression);
4615 count += count_decls_in_stmts(try_stmt->final_statement);
4623 static int get_function_n_local_vars(declaration_t *declaration)
4627 /* count parameters */
4628 count += count_local_declarations(declaration->scope.declarations, NULL);
4630 /* count local variables declared in body */
4631 count += count_decls_in_stmts(declaration->init.statement);
4636 static void initialize_function_parameters(declaration_t *declaration)
4638 ir_graph *irg = current_ir_graph;
4639 ir_node *args = get_irg_args(irg);
4640 ir_node *start_block = get_irg_start_block(irg);
4641 ir_type *function_irtype = get_ir_type(declaration->type);
4644 declaration_t *parameter = declaration->scope.declarations;
4645 for( ; parameter != NULL; parameter = parameter->next, ++n) {
4646 assert(parameter->declaration_kind == DECLARATION_KIND_UNKNOWN);
4647 type_t *type = skip_typeref(parameter->type);
4649 bool needs_entity = parameter->address_taken;
4650 assert(!is_type_array(type));
4651 if(is_type_compound(type)) {
4652 needs_entity = true;
4656 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
4657 ident *id = new_id_from_str(parameter->symbol->string);
4658 set_entity_ident(entity, id);
4660 parameter->declaration_kind
4661 = DECLARATION_KIND_LOCAL_VARIABLE_ENTITY;
4662 parameter->v.entity = entity;
4666 ir_mode *mode = get_ir_mode(parameter->type);
4668 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
4670 parameter->declaration_kind = DECLARATION_KIND_LOCAL_VARIABLE;
4671 parameter->v.value_number = next_value_number_function;
4672 set_irg_loc_description(current_ir_graph, next_value_number_function, parameter);
4673 ++next_value_number_function;
4675 set_value(parameter->v.value_number, proj);
4680 * Handle additional decl modifiers for IR-graphs
4682 * @param irg the IR-graph
4683 * @param dec_modifiers additional modifiers
4685 static void handle_decl_modifier_irg(ir_graph_ptr irg, decl_modifiers_t decl_modifiers)
4687 if (decl_modifiers & DM_NORETURN) {
4688 /* TRUE if the declaration includes the Microsoft
4689 __declspec(noreturn) specifier. */
4690 set_irg_additional_property(irg, mtp_property_noreturn);
4692 if (decl_modifiers & DM_NOTHROW) {
4693 /* TRUE if the declaration includes the Microsoft
4694 __declspec(nothrow) specifier. */
4695 set_irg_additional_property(irg, mtp_property_nothrow);
4697 if (decl_modifiers & DM_NAKED) {
4698 /* TRUE if the declaration includes the Microsoft
4699 __declspec(naked) specifier. */
4700 set_irg_additional_property(irg, mtp_property_naked);
4702 if (decl_modifiers & DM_FORCEINLINE) {
4703 /* TRUE if the declaration includes the
4704 Microsoft __forceinline specifier. */
4705 set_irg_inline_property(irg, irg_inline_forced);
4707 if (decl_modifiers & DM_NOINLINE) {
4708 /* TRUE if the declaration includes the Microsoft
4709 __declspec(noinline) specifier. */
4710 set_irg_inline_property(irg, irg_inline_forbidden);
4714 static void create_function(declaration_t *declaration)
4716 ir_entity *function_entity = get_function_entity(declaration);
4718 if(declaration->init.statement == NULL)
4721 current_function_decl = declaration;
4722 current_function_name = NULL;
4723 current_funcsig = NULL;
4725 assert(imature_blocks == NULL);
4726 imature_blocks = NEW_ARR_F(ir_node*, 0);
4728 int n_local_vars = get_function_n_local_vars(declaration);
4729 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
4731 set_irg_fp_model(irg, firm_opt.fp_model);
4732 tarval_enable_fp_ops((firm_opt.fp_model & fp_strict_algebraic) == 0);
4733 set_irn_dbg_info(get_irg_start_block(irg), get_entity_dbg_info(function_entity));
4735 ir_node *first_block = get_cur_block();
4737 /* set inline flags */
4738 if (declaration->is_inline)
4739 set_irg_inline_property(irg, irg_inline_recomended);
4740 handle_decl_modifier_irg(irg, declaration->decl_modifiers);
4742 next_value_number_function = 0;
4743 initialize_function_parameters(declaration);
4745 statement_to_firm(declaration->init.statement);
4747 ir_node *end_block = get_irg_end_block(irg);
4749 /* do we have a return statement yet? */
4750 if(get_cur_block() != NULL) {
4751 type_t *type = skip_typeref(declaration->type);
4752 assert(is_type_function(type));
4753 const function_type_t *func_type = &type->function;
4754 const type_t *return_type
4755 = skip_typeref(func_type->return_type);
4758 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
4759 ret = new_Return(get_store(), 0, NULL);
4762 if(is_type_scalar(return_type)) {
4763 mode = get_ir_mode(func_type->return_type);
4769 /* ยง5.1.2.2.3 main implicitly returns 0 */
4770 if (strcmp(declaration->symbol->string, "main") == 0) {
4771 in[0] = new_Const(mode, get_mode_null(mode));
4773 in[0] = new_Unknown(mode);
4775 ret = new_Return(get_store(), 1, in);
4777 add_immBlock_pred(end_block, ret);
4780 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
4781 mature_immBlock(imature_blocks[i]);
4783 DEL_ARR_F(imature_blocks);
4784 imature_blocks = NULL;
4786 mature_immBlock(first_block);
4787 mature_immBlock(end_block);
4789 irg_finalize_cons(irg);
4791 /* finalize the frame type */
4792 ir_type *frame_type = get_irg_frame_type(irg);
4793 int n = get_compound_n_members(frame_type);
4796 for(int i = 0; i < n; ++i) {
4797 ir_entity *entity = get_compound_member(frame_type, i);
4798 ir_type *entity_type = get_entity_type(entity);
4800 int align = get_type_alignment_bytes(entity_type);
4801 if(align > align_all)
4805 misalign = offset % align;
4807 offset += align - misalign;
4811 set_entity_offset(entity, offset);
4812 offset += get_type_size_bytes(entity_type);
4814 set_type_size_bytes(frame_type, offset);
4815 set_type_alignment_bytes(frame_type, align_all);
4820 static void scope_to_firm(scope_t *scope)
4822 /* first pass: create declarations */
4823 declaration_t *declaration = scope->declarations;
4824 for( ; declaration != NULL; declaration = declaration->next) {
4825 if(declaration->namespc != NAMESPACE_NORMAL)
4827 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4828 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4830 if(declaration->symbol == NULL)
4833 type_t *type = skip_typeref(declaration->type);
4834 if(is_type_function(type)) {
4835 get_function_entity(declaration);
4837 create_global_variable(declaration);
4841 /* second pass: create code/initializers */
4842 declaration = scope->declarations;
4843 for( ; declaration != NULL; declaration = declaration->next) {
4844 if(declaration->namespc != NAMESPACE_NORMAL)
4846 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
4847 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
4849 if(declaration->symbol == NULL)
4852 type_t *type = declaration->type;
4853 if(type->kind == TYPE_FUNCTION) {
4854 create_function(declaration);
4856 assert(declaration->declaration_kind
4857 == DECLARATION_KIND_GLOBAL_VARIABLE);
4858 current_ir_graph = get_const_code_irg();
4859 create_declaration_initializer(declaration);
4864 void init_ast2firm(void)
4866 obstack_init(&asm_obst);
4867 init_atomic_modes();
4869 id_underscore = new_id_from_chars("_", 1);
4870 id_imp = new_id_from_chars("__imp_", 6);
4872 /* OS option must be set to the backend */
4873 const char *s = "ia32-gasmode=linux";
4874 switch (firm_opt.os_support) {
4875 case OS_SUPPORT_WIN32:
4876 create_ld_ident = create_ld_ident_win32;
4877 s = "ia32-gasmode=mingw";
4879 case OS_SUPPORT_LINUX:
4880 create_ld_ident = create_ld_ident_linux_elf;
4881 s = "ia32-gasmode=linux"; break;
4883 case OS_SUPPORT_MACHO:
4884 create_ld_ident = create_ld_ident_macho;
4885 s = "ia32-gasmode=macho"; break;
4890 /* create idents for all known runtime functions */
4891 for (size_t i = 0; i < sizeof(rts_data) / sizeof(rts_data[0]); ++i) {
4892 rts_idents[i] = new_id_from_str(rts_data[i].name);
4896 static void init_ir_types(void)
4898 static int ir_types_initialized = 0;
4899 if(ir_types_initialized)
4901 ir_types_initialized = 1;
4903 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
4904 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
4905 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
4907 ir_type_int = get_ir_type(type_int);
4908 ir_type_const_char = get_ir_type(type_const_char);
4909 ir_type_wchar_t = get_ir_type(type_wchar_t);
4910 ir_type_void = get_ir_type(type_void);
4913 void exit_ast2firm(void)
4915 obstack_free(&asm_obst, NULL);
4918 void translation_unit_to_firm(translation_unit_t *unit)
4920 /* just to be sure */
4921 continue_label = NULL;
4923 current_switch_cond = NULL;
4927 scope_to_firm(&unit->scope);