9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
21 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
23 static ir_type *ir_type_const_char;
24 static ir_type *ir_type_wchar_t;
25 static ir_type *ir_type_void;
26 static ir_type *ir_type_int;
28 static type_t *type_const_char;
29 static type_t *type_void;
30 static type_t *type_int;
32 static int next_value_number_function;
33 static ir_node *continue_label;
34 static ir_node *break_label;
35 static ir_node *current_switch_cond;
36 static bool saw_default_label;
37 static ir_node **imature_blocks;
39 static const declaration_t *current_function_decl;
40 static ir_node *current_function_name;
42 typedef enum declaration_type_t {
43 DECLARATION_TYPE_UNKNOWN,
44 DECLARATION_TYPE_FUNCTION,
45 DECLARATION_TYPE_GLOBAL_VARIABLE,
46 DECLARATION_TYPE_LOCAL_VARIABLE,
47 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
48 DECLARATION_TYPE_COMPOUND_MEMBER,
49 DECLARATION_TYPE_LABEL_BLOCK,
50 DECLARATION_TYPE_ENUM_ENTRY
53 static ir_type *get_ir_type(type_t *type);
55 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
59 const declaration_t *declaration = & value_numbers[pos]->declaration;
61 print_warning_prefix(declaration->source_position);
62 fprintf(stderr, "variable '%s' might be used uninitialized\n",
63 declaration->symbol->string);
65 fprintf(stderr, "Some variable might be used uninitialized\n");
66 return new_r_Unknown(irg, mode);
69 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
71 const source_position_t *pos = (const source_position_t*) dbg;
74 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
78 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
80 const source_position_t *pos = (const source_position_t*) dbg;
85 return pos->input_name;
88 void init_ast2firm(void)
92 void exit_ast2firm(void)
96 static unsigned unique_id = 0;
98 static ident *unique_ident(const char *tag)
102 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
104 return new_id_from_str(buf);
107 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
109 switch(atomic_type->atype) {
110 case ATOMIC_TYPE_SCHAR:
111 case ATOMIC_TYPE_CHAR:
113 case ATOMIC_TYPE_UCHAR:
115 case ATOMIC_TYPE_SHORT:
117 case ATOMIC_TYPE_USHORT:
119 case ATOMIC_TYPE_LONG:
120 case ATOMIC_TYPE_INT:
122 case ATOMIC_TYPE_ULONG:
123 case ATOMIC_TYPE_UINT:
125 case ATOMIC_TYPE_LONGLONG:
127 case ATOMIC_TYPE_ULONGLONG:
129 case ATOMIC_TYPE_FLOAT:
131 case ATOMIC_TYPE_DOUBLE:
133 case ATOMIC_TYPE_LONG_DOUBLE:
135 case ATOMIC_TYPE_BOOL:
137 #ifdef PROVIDE_COMPLEX
138 case ATOMIC_TYPE_FLOAT_COMPLEX:
139 case ATOMIC_TYPE_DOUBLE_COMPLEX:
140 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
141 panic("complex lowering not implemented yet");
143 case ATOMIC_TYPE_FLOAT_IMAGINARY:
144 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
145 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
146 panic("imaginary lowering not implemented yet");
149 case ATOMIC_TYPE_VOID:
150 /* firm has no real void... */
152 case ATOMIC_TYPE_INVALID:
155 panic("Encountered unknown atomic type");
159 static unsigned get_type_size(type_t *type);
161 static unsigned get_atomic_type_size(const atomic_type_t *type)
163 switch(type->atype) {
164 case ATOMIC_TYPE_CHAR:
165 case ATOMIC_TYPE_SCHAR:
166 case ATOMIC_TYPE_UCHAR:
169 case ATOMIC_TYPE_SHORT:
170 case ATOMIC_TYPE_USHORT:
173 case ATOMIC_TYPE_BOOL:
174 case ATOMIC_TYPE_INT:
175 case ATOMIC_TYPE_UINT:
176 case ATOMIC_TYPE_LONG:
177 case ATOMIC_TYPE_ULONG:
178 case ATOMIC_TYPE_FLOAT:
181 case ATOMIC_TYPE_LONGLONG:
182 case ATOMIC_TYPE_ULONGLONG:
183 case ATOMIC_TYPE_DOUBLE:
186 case ATOMIC_TYPE_LONG_DOUBLE:
189 case ATOMIC_TYPE_VOID:
192 case ATOMIC_TYPE_INVALID:
195 panic("Trying to determine size of invalid atomic type");
198 static unsigned get_compound_type_size(compound_type_t *type)
200 ir_type *irtype = get_ir_type((type_t*) type);
201 return get_type_size_bytes(irtype);
204 static unsigned get_array_type_size(array_type_t *type)
206 ir_type *irtype = get_ir_type((type_t*) type);
207 return get_type_size_bytes(irtype);
210 static unsigned get_type_size(type_t *type)
212 type = skip_typeref(type);
216 return get_atomic_type_size(&type->atomic);
218 return get_mode_size_bytes(mode_Is);
219 case TYPE_COMPOUND_UNION:
220 case TYPE_COMPOUND_STRUCT:
221 return get_compound_type_size(&type->compound);
223 /* just a pointer to the function */
224 return get_mode_size_bytes(mode_P_code);
226 return get_mode_size_bytes(mode_P_data);
228 return get_array_type_size(&type->array);
235 panic("Trying to determine size of invalid type");
238 static unsigned count_parameters(const function_type_t *function_type)
242 function_parameter_t *parameter = function_type->parameters;
243 for ( ; parameter != NULL; parameter = parameter->next) {
253 static long fold_constant(const expression_t *expression);
255 static ir_type *create_atomic_type(const atomic_type_t *type)
257 ir_mode *mode = get_atomic_mode(type);
258 ident *id = get_mode_ident(mode);
259 ir_type *irtype = new_type_primitive(id, mode);
264 static ir_type *create_method_type(const function_type_t *function_type)
266 type_t *return_type = function_type->return_type;
268 ident *id = unique_ident("functiontype");
269 int n_parameters = count_parameters(function_type);
270 int n_results = return_type == type_void ? 0 : 1;
271 ir_type *irtype = new_type_method(id, n_parameters, n_results);
273 if(return_type != type_void) {
274 ir_type *restype = get_ir_type(return_type);
275 set_method_res_type(irtype, 0, restype);
278 function_parameter_t *parameter = function_type->parameters;
280 for( ; parameter != NULL; parameter = parameter->next) {
281 ir_type *p_irtype = get_ir_type(parameter->type);
282 set_method_param_type(irtype, n, p_irtype);
286 if(function_type->variadic || function_type->unspecified_parameters) {
287 set_method_variadicity(irtype, variadicity_variadic);
293 static ir_type *create_pointer_type(pointer_type_t *type)
295 type_t *points_to = type->points_to;
296 ir_type *ir_points_to;
297 /* Avoid endless recursion if the points_to type contains this poiner type
298 * again (might be a struct). We therefore first create a void* pointer
299 * and then set the real points_to type
301 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
302 ir_type_void, mode_P_data);
303 type->type.firm_type = ir_type;
305 ir_points_to = get_ir_type(points_to);
306 set_pointer_points_to_type(ir_type, ir_points_to);
311 static ir_type *create_array_type(array_type_t *type)
313 type_t *element_type = type->element_type;
314 ir_type *ir_element_type = get_ir_type(element_type);
316 ident *id = unique_ident("array");
317 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
319 if(type->size != NULL) {
320 int n_elements = fold_constant(type->size);
322 set_array_bounds_int(ir_type, 0, 0, n_elements);
324 size_t elemsize = get_type_size_bytes(ir_element_type);
325 int align = get_type_alignment_bytes(ir_element_type);
326 if(elemsize % align > 0) {
327 elemsize += align - (elemsize % align);
329 set_type_size_bytes(ir_type, n_elements * elemsize);
330 set_type_alignment_bytes(ir_type, align);
331 set_type_state(ir_type, layout_fixed);
337 #define INVALID_TYPE ((ir_type_ptr)-1)
339 static ir_type *create_struct_type(compound_type_t *type)
341 symbol_t *symbol = type->declaration->symbol;
344 id = unique_ident(symbol->string);
346 id = unique_ident("__anonymous_struct");
348 ir_type *ir_type = new_type_struct(id);
350 type->type.firm_type = ir_type;
354 declaration_t *entry = type->declaration->context.declarations;
355 for( ; entry != NULL; entry = entry->next) {
356 if(entry->namespc != NAMESPACE_NORMAL)
359 ident *ident = new_id_from_str(entry->symbol->string);
360 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
362 int entry_size = get_type_size_bytes(entry_ir_type);
363 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
364 int misalign = offset % entry_alignment;
366 offset += entry_alignment - misalign;
368 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
369 set_entity_offset(entity, offset);
370 add_struct_member(ir_type, entity);
371 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
372 entry->v.entity = entity;
374 offset += entry_size;
375 if(entry_alignment > align_all) {
376 if(entry_alignment % align_all != 0) {
377 panic("Uneven alignments not supported yet");
379 align_all = entry_alignment;
383 int misalign = offset % align_all;
385 set_type_alignment_bytes(ir_type, align_all);
386 set_type_size_bytes(ir_type, offset);
387 set_type_state(ir_type, layout_fixed);
392 static ir_type *create_union_type(compound_type_t *type)
394 declaration_t *declaration = type->declaration;
395 symbol_t *symbol = declaration->symbol;
398 id = unique_ident(symbol->string);
400 id = unique_ident("__anonymous_union");
402 ir_type *ir_type = new_type_union(id);
404 type->type.firm_type = ir_type;
408 declaration_t *entry = declaration->context.declarations;
409 for( ; entry != NULL; entry = entry->next) {
410 if(entry->namespc != NAMESPACE_NORMAL)
413 ident *ident = new_id_from_str(entry->symbol->string);
414 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
416 int entry_size = get_type_size_bytes(entry_ir_type);
417 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
419 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
420 add_union_member(ir_type, entity);
421 set_entity_offset(entity, 0);
422 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
423 entry->v.entity = entity;
425 if(entry_size > size) {
428 if(entry_alignment > align_all) {
429 if(entry_alignment % align_all != 0) {
430 panic("Uneven alignments not supported yet");
432 align_all = entry_alignment;
436 set_type_alignment_bytes(ir_type, align_all);
437 set_type_size_bytes(ir_type, size);
438 set_type_state(ir_type, layout_fixed);
443 static ir_node *expression_to_firm(const expression_t *expression);
444 static inline ir_mode *get_ir_mode(type_t *type);
446 static ir_type *create_enum_type(enum_type_t *const type)
448 type->type.firm_type = ir_type_int;
450 ir_mode *const mode = get_ir_mode((type_t*) type);
451 tarval *const one = get_mode_one(mode);
452 tarval * tv_next = get_tarval_null(mode);
454 declaration_t *declaration = type->declaration->next;
455 for (; declaration != NULL; declaration = declaration->next) {
456 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY)
459 declaration->declaration_type = DECLARATION_TYPE_ENUM_ENTRY;
461 expression_t *const init = declaration->init.enum_value;
463 ir_node *const cnst = expression_to_firm(init);
464 if (!is_Const(cnst)) {
465 panic("couldn't fold constant");
467 tv_next = get_Const_tarval(cnst);
469 declaration->v.enum_val = tv_next;
470 tv_next = tarval_add(tv_next, one);
476 static ir_type *get_ir_type(type_t *type)
478 assert(type != NULL);
480 type = skip_typeref(type);
482 if(type->base.firm_type != NULL) {
483 assert(type->base.firm_type != INVALID_TYPE);
484 return type->base.firm_type;
487 ir_type *firm_type = NULL;
490 firm_type = create_atomic_type(&type->atomic);
493 firm_type = create_method_type(&type->function);
496 firm_type = create_pointer_type(&type->pointer);
499 firm_type = create_array_type(&type->array);
501 case TYPE_COMPOUND_STRUCT:
502 firm_type = create_struct_type(&type->compound);
504 case TYPE_COMPOUND_UNION:
505 firm_type = create_union_type(&type->compound);
508 firm_type = create_enum_type(&type->enumt);
516 if(firm_type == NULL)
517 panic("unknown type found");
519 type->base.firm_type = firm_type;
523 static inline ir_mode *get_ir_mode(type_t *type)
525 ir_type *irtype = get_ir_type(type);
527 /* firm doesn't report a mode for arrays somehow... */
528 if(is_Array_type(irtype)) {
532 ir_mode *mode = get_type_mode(irtype);
533 assert(mode != NULL);
537 static ir_entity* get_function_entity(declaration_t *declaration)
539 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
540 return declaration->v.entity;
541 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
543 symbol_t *symbol = declaration->symbol;
544 ident *id = new_id_from_str(symbol->string);
546 ir_type *global_type = get_glob_type();
547 ir_type *ir_type_method = get_ir_type(declaration->type);
548 assert(is_Method_type(ir_type_method));
550 ir_entity *entity = new_entity(global_type, id, ir_type_method);
551 set_entity_ld_ident(entity, id);
552 if(declaration->storage_class == STORAGE_CLASS_STATIC
553 || declaration->is_inline) {
554 set_entity_visibility(entity, visibility_local);
555 } else if(declaration->init.statement != NULL) {
556 set_entity_visibility(entity, visibility_external_visible);
558 set_entity_visibility(entity, visibility_external_allocated);
561 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
562 declaration->v.entity = entity;
567 static dbg_info *get_dbg_info(const source_position_t *pos)
569 return (dbg_info*) pos;
572 static ir_node *const_to_firm(const const_expression_t *cnst)
574 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
575 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
580 if(mode_is_float(mode)) {
581 tv = new_tarval_from_double(cnst->v.float_value, mode);
583 if(mode_is_signed(mode)) {
584 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
586 len = snprintf(buf, sizeof(buf), "%llu",
587 (unsigned long long) cnst->v.int_value);
589 tv = new_tarval_from_str(buf, len, mode);
592 return new_d_Const(dbgi, mode, tv);
595 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
597 assert(entity != NULL);
598 union symconst_symbol sym;
599 sym.entity_p = entity;
600 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
603 static ir_node *string_to_firm(const source_position_t *const src_pos,
604 const char *const id_prefix,
605 const char *const string)
607 ir_type *const global_type = get_glob_type();
608 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
611 ident *const id = unique_ident(id_prefix);
612 ir_entity *const entity = new_entity(global_type, id, type);
613 set_entity_ld_ident(entity, id);
614 set_entity_variability(entity, variability_constant);
616 ir_type *const elem_type = ir_type_const_char;
617 ir_mode *const mode = get_type_mode(elem_type);
619 const size_t slen = strlen(string) + 1;
621 set_array_lower_bound_int(type, 0, 0);
622 set_array_upper_bound_int(type, 0, slen);
623 set_type_size_bytes(type, slen);
624 set_type_state(type, layout_fixed);
626 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
627 for(size_t i = 0; i < slen; ++i) {
628 tvs[i] = new_tarval_from_long(string[i], mode);
631 set_array_entity_values(entity, tvs, slen);
634 dbg_info *const dbgi = get_dbg_info(src_pos);
636 return create_symconst(dbgi, entity);
639 static ir_node *string_literal_to_firm(
640 const string_literal_expression_t* literal)
642 return string_to_firm(&literal->expression.source_position, "Lstr",
646 static ir_node *wide_string_literal_to_firm(
647 const wide_string_literal_expression_t* const literal)
649 ir_type *const global_type = get_glob_type();
650 ir_type *const elem_type = ir_type_wchar_t;
651 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
654 ident *const id = unique_ident("Lstr");
655 ir_entity *const entity = new_entity(global_type, id, type);
656 set_entity_ld_ident(entity, id);
657 set_entity_variability(entity, variability_constant);
659 ir_mode *const mode = get_type_mode(elem_type);
661 const wchar_rep_t *const string = literal->value.begin;
662 const size_t slen = literal->value.size;
664 set_array_lower_bound_int(type, 0, 0);
665 set_array_upper_bound_int(type, 0, slen);
666 set_type_size_bytes(type, slen);
667 set_type_state(type, layout_fixed);
669 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
670 for(size_t i = 0; i < slen; ++i) {
671 tvs[i] = new_tarval_from_long(string[i], mode);
674 set_array_entity_values(entity, tvs, slen);
677 dbg_info *const dbgi = get_dbg_info(&literal->expression.source_position);
679 return create_symconst(dbgi, entity);
682 static ir_node *deref_address(ir_type *const irtype, ir_node *const addr,
683 dbg_info *const dbgi)
685 if(is_compound_type(irtype) || is_Array_type(irtype)) {
689 ir_mode *const mode = get_type_mode(irtype);
690 ir_node *const memory = get_store();
691 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
692 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
693 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
698 static ir_node *do_strict_conv(dbg_info *dbgi, ir_node *node)
700 ir_mode *mode = get_irn_mode(node);
702 if(!(get_irg_fp_model(current_ir_graph) & fp_explicit_rounding))
704 if(!mode_is_float(mode))
707 /* check if there is already a Conv */
708 if (get_irn_op(node) == op_Conv) {
709 /* convert it into a strict Conv */
710 set_Conv_strict(node, 1);
714 /* otherwise create a new one */
715 return new_d_strictConv(dbgi, node, mode);
718 static ir_node *get_global_var_address(dbg_info *const dbgi,
719 const declaration_t *const decl)
721 assert(decl->declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
723 ir_entity *const entity = decl->v.entity;
724 switch ((storage_class_tag_t)decl->storage_class) {
725 case STORAGE_CLASS_THREAD:
726 case STORAGE_CLASS_THREAD_EXTERN:
727 case STORAGE_CLASS_THREAD_STATIC: {
728 ir_node *const no_mem = new_NoMem();
729 ir_node *const tls = get_irg_tls(current_ir_graph);
730 return new_d_simpleSel(dbgi, no_mem, tls, entity);
734 return create_symconst(dbgi, entity);
738 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
740 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
741 declaration_t *declaration = ref->declaration;
742 type_t *type = skip_typeref(declaration->type);
744 switch((declaration_type_t) declaration->declaration_type) {
745 case DECLARATION_TYPE_UNKNOWN:
746 if (declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY) {
752 case DECLARATION_TYPE_ENUM_ENTRY: {
753 ir_mode *const mode = get_ir_mode(type);
754 return new_Const(mode, declaration->v.enum_val);
757 case DECLARATION_TYPE_LOCAL_VARIABLE: {
758 ir_mode *mode = get_ir_mode(type);
759 return get_value(declaration->v.value_number, mode);
761 case DECLARATION_TYPE_FUNCTION: {
762 return create_symconst(dbgi, declaration->v.entity);
764 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
765 ir_node *const addr = get_global_var_address(dbgi, declaration);
766 ir_type *const irtype = get_entity_type(declaration->v.entity);
767 return deref_address(irtype, addr, dbgi);
770 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
771 ir_entity *entity = declaration->v.entity;
772 ir_node *frame = get_irg_frame(current_ir_graph);
773 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
774 ir_type *irtype = get_entity_type(entity);
775 return deref_address(irtype, sel, dbgi);
778 case DECLARATION_TYPE_COMPOUND_MEMBER:
779 case DECLARATION_TYPE_LABEL_BLOCK:
780 panic("not implemented reference type");
783 panic("reference to declaration with unknown type found");
786 static ir_node *reference_addr(const reference_expression_t *ref)
788 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
789 declaration_t *declaration = ref->declaration;
791 switch((declaration_type_t) declaration->declaration_type) {
792 case DECLARATION_TYPE_UNKNOWN:
794 case DECLARATION_TYPE_LOCAL_VARIABLE:
795 panic("local variable without entity has no address");
796 case DECLARATION_TYPE_FUNCTION: {
797 return create_symconst(dbgi, declaration->v.entity);
799 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
800 ir_node *const addr = get_global_var_address(dbgi, declaration);
803 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
804 ir_entity *entity = declaration->v.entity;
805 ir_node *frame = get_irg_frame(current_ir_graph);
806 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
811 case DECLARATION_TYPE_ENUM_ENTRY:
812 panic("trying to reference enum entry");
814 case DECLARATION_TYPE_COMPOUND_MEMBER:
815 case DECLARATION_TYPE_LABEL_BLOCK:
816 panic("not implemented reference type");
819 panic("reference to declaration with unknown type found");
822 static ir_node *process_builtin_call(const call_expression_t *call)
824 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
826 assert(call->function->type == EXPR_BUILTIN_SYMBOL);
827 builtin_symbol_expression_t *builtin = &call->function->builtin_symbol;
829 type_t *type = skip_typeref(builtin->expression.datatype);
830 assert(is_type_pointer(type));
832 type_t *function_type = skip_typeref(type->pointer.points_to);
833 symbol_t *symbol = builtin->symbol;
836 case T___builtin_alloca: {
837 if(call->arguments == NULL || call->arguments->next != NULL) {
838 panic("invalid number of parameters on __builtin_alloca");
840 expression_t *argument = call->arguments->expression;
841 ir_node *size = expression_to_firm(argument);
843 ir_node *store = get_store();
844 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
846 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
848 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
852 case T___builtin_nan:
853 case T___builtin_nanf:
854 case T___builtin_nand: {
855 /* Ignore string for now... */
856 assert(is_type_function(function_type));
857 ir_mode *mode = get_ir_mode(function_type->function.return_type);
858 tarval *tv = get_mode_NAN(mode);
859 ir_node *res = new_d_Const(dbgi, mode, tv);
863 panic("Unsupported builtin found\n");
867 static ir_node *call_expression_to_firm(const call_expression_t *call)
869 assert(get_cur_block() != NULL);
871 expression_t *function = call->function;
872 if(function->type == EXPR_BUILTIN_SYMBOL) {
873 return process_builtin_call(call);
875 ir_node *callee = expression_to_firm(function);
877 type_t *type = skip_typeref(function->base.datatype);
878 assert(is_type_pointer(type));
879 pointer_type_t *pointer_type = &type->pointer;
880 type_t *points_to = skip_typeref(pointer_type->points_to);
881 assert(is_type_function(points_to));
882 function_type_t *function_type = &points_to->function;
884 int n_parameters = 0;
885 call_argument_t *argument = call->arguments;
886 for( ; argument != NULL; argument = argument->next) {
890 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
892 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
893 ir_type *new_method_type = NULL;
894 if(function_type->variadic || function_type->unspecified_parameters) {
895 /* we need to construct a new method type matching the call
897 int n_res = get_method_n_ress(ir_method_type);
898 new_method_type = new_type_method(unique_ident("calltype"),
899 n_parameters, n_res);
900 set_method_calling_convention(new_method_type,
901 get_method_calling_convention(ir_method_type));
902 set_method_additional_properties(new_method_type,
903 get_method_additional_properties(ir_method_type));
905 for(int i = 0; i < n_res; ++i) {
906 set_method_res_type(new_method_type, i,
907 get_method_res_type(ir_method_type, i));
910 ir_node *in[n_parameters];
912 argument = call->arguments;
914 for( ; argument != NULL; argument = argument->next) {
915 expression_t *expression = argument->expression;
916 ir_node *arg_node = expression_to_firm(expression);
918 arg_node = do_strict_conv(dbgi, arg_node);
921 if(new_method_type != NULL) {
922 ir_type *irtype = get_ir_type(expression->base.datatype);
923 set_method_param_type(new_method_type, n, irtype);
928 assert(n == n_parameters);
930 if(new_method_type != NULL)
931 ir_method_type = new_method_type;
933 ir_node *store = get_store();
934 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
936 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
939 type_t *return_type = skip_typeref(function_type->return_type);
940 ir_node *result = NULL;
942 if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
944 if(is_type_scalar(return_type)) {
945 mode = get_ir_mode(return_type);
949 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
950 result = new_d_Proj(dbgi, resproj, mode, 0);
956 static void statement_to_firm(statement_t *statement);
957 static ir_node *compound_statement_to_firm(compound_statement_t *compound);
959 static ir_node *expression_to_addr(const expression_t *expression);
960 static void create_condition_evaluation(const expression_t *expression,
962 ir_node *false_block);
964 static void set_value_for_expression(const expression_t *expression,
967 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
968 value = do_strict_conv(dbgi, value);
970 if(expression->type == EXPR_REFERENCE) {
971 reference_expression_t *ref = (reference_expression_t*) expression;
973 declaration_t *declaration = ref->declaration;
974 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
975 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
976 set_value(declaration->v.value_number, value);
981 ir_node *addr = expression_to_addr(expression);
982 ir_node *memory = get_store();
984 type_t *type = skip_typeref(expression->base.datatype);
985 if(is_type_scalar(type)) {
986 ir_node *store = new_d_Store(dbgi, memory, addr, value);
987 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
988 set_store(store_mem);
990 ir_type *irtype = get_ir_type(type);
991 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, value, irtype);
992 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
993 set_store(copyb_mem);
997 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
999 ir_mode *value_mode = get_irn_mode(value);
1001 if (value_mode == dest_mode || is_Bad(value))
1004 if(dest_mode == mode_b) {
1005 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
1006 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
1007 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
1011 return new_d_Conv(dbgi, value, dest_mode);
1014 static ir_node *create_incdec(const unary_expression_t *expression)
1016 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1017 type_t *type = skip_typeref(expression->expression.datatype);
1018 ir_mode *mode = get_ir_mode(type);
1019 expression_t *value = expression->value;
1021 ir_node *value_node = expression_to_firm(value);
1024 if(is_type_pointer(type)) {
1025 pointer_type_t *pointer_type = &type->pointer;
1026 unsigned elem_size = get_type_size(pointer_type->points_to);
1027 offset = new_Const_long(mode_Is, elem_size);
1029 assert(is_type_arithmetic(type));
1030 offset = new_Const(mode, get_mode_one(mode));
1033 switch(expression->type) {
1034 case UNEXPR_POSTFIX_INCREMENT: {
1035 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1036 set_value_for_expression(value, new_value);
1039 case UNEXPR_POSTFIX_DECREMENT: {
1040 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1041 set_value_for_expression(value, new_value);
1044 case UNEXPR_PREFIX_INCREMENT: {
1045 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
1046 set_value_for_expression(value, new_value);
1049 case UNEXPR_PREFIX_DECREMENT: {
1050 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
1051 set_value_for_expression(value, new_value);
1055 panic("no incdec expr in create_incdec");
1060 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
1062 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1063 type_t *type = skip_typeref(expression->expression.datatype);
1064 ir_mode *mode = get_ir_mode(type);
1066 if(expression->type == UNEXPR_TAKE_ADDRESS)
1067 return expression_to_addr(expression->value);
1069 const expression_t *value = expression->value;
1070 ir_node *value_node = expression_to_firm(value);
1072 switch(expression->type) {
1074 return new_d_Minus(dbgi, value_node, mode);
1077 case UNEXPR_BITWISE_NEGATE:
1078 return new_d_Not(dbgi, value_node, mode);
1080 if(get_irn_mode(value_node) != mode_b) {
1081 value_node = create_conv(dbgi, value_node, mode_b);
1083 value_node = new_d_Not(dbgi, value_node, mode_b);
1084 if(mode != mode_b) {
1085 value_node = create_conv(dbgi, value_node, mode);
1089 case UNEXPR_DEREFERENCE: {
1090 type_t *value_type = skip_typeref(value->base.datatype);
1091 ir_type *irtype = get_ir_type(value_type);
1092 assert(is_Pointer_type(irtype));
1093 ir_type *points_to = get_pointer_points_to_type(irtype);
1094 return deref_address(points_to, value_node, dbgi);
1096 case UNEXPR_POSTFIX_INCREMENT:
1097 case UNEXPR_POSTFIX_DECREMENT:
1098 case UNEXPR_PREFIX_INCREMENT:
1099 case UNEXPR_PREFIX_DECREMENT:
1100 return create_incdec(expression);
1102 ir_node *node = create_conv(dbgi, value_node, get_ir_mode(type));
1103 node = do_strict_conv(dbgi, node);
1106 case UNEXPR_CAST_IMPLICIT:
1107 return create_conv(dbgi, value_node, get_ir_mode(type));
1109 case UNEXPR_TAKE_ADDRESS:
1110 case UNEXPR_INVALID:
1113 panic("invalid UNEXPR type found");
1116 static long get_pnc(binary_expression_type_t type)
1119 case BINEXPR_EQUAL: return pn_Cmp_Eq;
1120 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
1121 case BINEXPR_LESS: return pn_Cmp_Lt;
1122 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
1123 case BINEXPR_GREATER: return pn_Cmp_Gt;
1124 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
1128 panic("trying to get pn_Cmp from non-comparison binexpr type");
1131 static ir_node *create_lazy_op(const binary_expression_t *expression)
1133 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1134 type_t *type = expression->expression.datatype;
1135 ir_mode *mode = get_ir_mode(type);
1137 ir_node *cur_block = get_cur_block();
1139 ir_node *one_block = new_immBlock();
1140 ir_node *one = new_Const(mode, get_mode_one(mode));
1141 ir_node *jmp_one = new_d_Jmp(dbgi);
1143 ir_node *zero_block = new_immBlock();
1144 ir_node *zero = new_Const(mode, get_mode_null(mode));
1145 ir_node *jmp_zero = new_d_Jmp(dbgi);
1147 set_cur_block(cur_block);
1148 create_condition_evaluation((const expression_t*) expression,
1149 one_block, zero_block);
1150 mature_immBlock(one_block);
1151 mature_immBlock(zero_block);
1153 ir_node *common_block = new_immBlock();
1154 add_immBlock_pred(common_block, jmp_one);
1155 add_immBlock_pred(common_block, jmp_zero);
1156 mature_immBlock(common_block);
1158 ir_node *in[2] = { one, zero };
1159 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1164 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1165 ir_node *right, ir_mode *mode);
1167 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1168 create_arithmetic_func func)
1170 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1171 ir_node *left = expression_to_firm(expression->left);
1172 ir_node *right = expression_to_firm(expression->right);
1173 type_t *type = expression->right->base.datatype;
1174 /* be careful with the modes, because in arithmetic assign nodes only
1175 * the right operand has the mode of the arithmetic already */
1176 ir_mode *mode = get_ir_mode(type);
1177 left = create_conv(dbgi, left, mode);
1178 ir_node *res = func(dbgi, left, right, mode);
1183 static ir_node *pointer_arithmetic(ir_node *const pointer,
1186 dbg_info *const dbgi,
1187 const create_arithmetic_func func)
1189 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1190 type_t *const points_to = pointer_type->points_to;
1191 const unsigned elem_size = get_type_size(points_to);
1193 assert(elem_size >= 1);
1194 if (elem_size > 1) {
1195 integer = create_conv(dbgi, integer, mode_Is);
1196 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1197 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1201 ir_mode *const mode = get_ir_mode(type);
1202 return func(dbgi, pointer, integer, mode);
1205 static ir_node *create_arithmetic_assign_binop(
1206 const binary_expression_t *expression, create_arithmetic_func func)
1208 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1209 type_t *const type = skip_typeref(expression->expression.datatype);
1212 if (is_type_pointer(type)) {
1213 ir_node *const pointer = expression_to_firm(expression->left);
1214 ir_node * integer = expression_to_firm(expression->right);
1215 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1217 value = create_arithmetic_binop(expression, func);
1220 ir_mode *const mode = get_ir_mode(type);
1221 value = create_conv(dbgi, value, mode);
1222 set_value_for_expression(expression->left, value);
1227 static ir_node *create_add(const binary_expression_t *expression)
1229 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1230 ir_node *left = expression_to_firm(expression->left);
1231 ir_node *right = expression_to_firm(expression->right);
1232 type_t *type = expression->expression.datatype;
1234 expression_t *expr_left = expression->left;
1235 expression_t *expr_right = expression->right;
1236 type_t *type_left = skip_typeref(expr_left->base.datatype);
1237 type_t *type_right = skip_typeref(expr_right->base.datatype);
1239 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1240 ir_mode *const mode = get_ir_mode(type);
1241 return new_d_Add(dbgi, left, right, mode);
1244 if (is_type_pointer(type_left)) {
1245 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1247 assert(is_type_pointer(type_right));
1248 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1252 static ir_node *create_sub(const binary_expression_t *expression)
1254 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1255 expression_t *const expr_left = expression->left;
1256 expression_t *const expr_right = expression->right;
1257 ir_node *const left = expression_to_firm(expr_left);
1258 ir_node *const right = expression_to_firm(expr_right);
1259 type_t *const type = expression->expression.datatype;
1260 type_t *const type_left = skip_typeref(expr_left->base.datatype);
1261 type_t *const type_right = skip_typeref(expr_right->base.datatype);
1263 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1264 ir_mode *const mode = get_ir_mode(type);
1265 return new_d_Sub(dbgi, left, right, mode);
1266 } else if (is_type_pointer(type_left) && is_type_pointer(type_right)) {
1267 const pointer_type_t *const ptr_type = &type_left->pointer;
1268 const unsigned elem_size = get_type_size(ptr_type->points_to);
1269 ir_mode *const mode = get_ir_mode(type);
1270 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1271 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1272 ir_node *const no_mem = new_NoMem();
1273 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1274 op_pin_state_floats);
1275 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1278 assert(is_type_pointer(type_left));
1279 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1282 static ir_node *create_shift(const binary_expression_t *expression)
1284 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1285 ir_node *left = expression_to_firm(expression->left);
1286 ir_node *right = expression_to_firm(expression->right);
1287 type_t *type = expression->expression.datatype;
1288 ir_mode *mode = get_ir_mode(type);
1290 /* firm always wants the shift count to be unsigned */
1291 right = create_conv(dbgi, right, mode_Iu);
1295 switch(expression->type) {
1296 case BINEXPR_SHIFTLEFT_ASSIGN:
1297 case BINEXPR_SHIFTLEFT:
1298 res = new_d_Shl(dbgi, left, right, mode);
1300 case BINEXPR_SHIFTRIGHT_ASSIGN:
1301 case BINEXPR_SHIFTRIGHT: {
1302 expression_t *expr_left = expression->left;
1303 type_t *type_left = skip_typeref(expr_left->base.datatype);
1305 if(is_type_signed(type_left)) {
1306 res = new_d_Shrs(dbgi, left, right, mode);
1308 res = new_d_Shr(dbgi, left, right, mode);
1313 panic("create shift op called for non-shift op");
1320 static ir_node *create_divmod(const binary_expression_t *expression)
1322 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1323 ir_node *left = expression_to_firm(expression->left);
1324 ir_node *right = expression_to_firm(expression->right);
1325 ir_node *pin = new_Pin(new_NoMem());
1326 /* be careful with the modes, because in arithmetic assign nodes only
1327 * the right operand has the mode of the arithmetic already */
1328 type_t *type = expression->right->base.datatype;
1329 ir_mode *mode = get_ir_mode(type);
1330 left = create_conv(dbgi, left, mode);
1334 switch (expression->type) {
1336 case BINEXPR_DIV_ASSIGN:
1337 if(mode_is_float(mode)) {
1338 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1339 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1341 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1342 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1347 case BINEXPR_MOD_ASSIGN:
1348 assert(!mode_is_float(mode));
1349 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1350 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1353 default: panic("unexpected binary expression type in create_divmod()");
1359 static ir_node *create_arithmetic_assign_divmod(
1360 const binary_expression_t *expression)
1362 ir_node * value = create_divmod(expression);
1363 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1364 type_t *const type = expression->expression.datatype;
1365 ir_mode *const mode = get_ir_mode(type);
1367 assert(type->type != TYPE_POINTER);
1369 value = create_conv(dbgi, value, mode);
1370 set_value_for_expression(expression->left, value);
1375 static ir_node *create_arithmetic_assign_shift(
1376 const binary_expression_t *expression)
1378 ir_node * value = create_shift(expression);
1379 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1380 type_t *const type = expression->expression.datatype;
1381 ir_mode *const mode = get_ir_mode(type);
1383 value = create_conv(dbgi, value, mode);
1384 set_value_for_expression(expression->left, value);
1389 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1391 binary_expression_type_t type = expression->type;
1394 case BINEXPR_NOTEQUAL:
1396 case BINEXPR_LESSEQUAL:
1397 case BINEXPR_GREATER:
1398 case BINEXPR_GREATEREQUAL: {
1399 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1400 ir_node *left = expression_to_firm(expression->left);
1401 ir_node *right = expression_to_firm(expression->right);
1402 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1403 long pnc = get_pnc(type);
1404 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1407 case BINEXPR_ASSIGN: {
1408 ir_node *right = expression_to_firm(expression->right);
1409 set_value_for_expression(expression->left, right);
1414 return create_add(expression);
1416 return create_sub(expression);
1418 return create_arithmetic_binop(expression, new_d_Mul);
1419 case BINEXPR_BITWISE_AND:
1420 return create_arithmetic_binop(expression, new_d_And);
1421 case BINEXPR_BITWISE_OR:
1422 return create_arithmetic_binop(expression, new_d_Or);
1423 case BINEXPR_BITWISE_XOR:
1424 return create_arithmetic_binop(expression, new_d_Eor);
1425 case BINEXPR_SHIFTLEFT:
1426 case BINEXPR_SHIFTRIGHT:
1427 return create_shift(expression);
1430 return create_divmod(expression);
1431 case BINEXPR_LOGICAL_AND:
1432 case BINEXPR_LOGICAL_OR:
1433 return create_lazy_op(expression);
1435 expression_to_firm(expression->left);
1436 return expression_to_firm(expression->right);
1437 case BINEXPR_ADD_ASSIGN:
1438 return create_arithmetic_assign_binop(expression, new_d_Add);
1439 case BINEXPR_SUB_ASSIGN:
1440 return create_arithmetic_assign_binop(expression, new_d_Sub);
1441 case BINEXPR_MUL_ASSIGN:
1442 return create_arithmetic_assign_binop(expression, new_d_Mul);
1443 case BINEXPR_DIV_ASSIGN:
1444 return create_arithmetic_assign_divmod(expression);
1445 case BINEXPR_BITWISE_AND_ASSIGN:
1446 return create_arithmetic_assign_binop(expression, new_d_And);
1447 case BINEXPR_BITWISE_OR_ASSIGN:
1448 return create_arithmetic_assign_binop(expression, new_d_Or);
1449 case BINEXPR_BITWISE_XOR_ASSIGN:
1450 return create_arithmetic_assign_binop(expression, new_d_Eor);
1451 case BINEXPR_SHIFTLEFT_ASSIGN:
1452 case BINEXPR_SHIFTRIGHT_ASSIGN:
1453 return create_arithmetic_assign_shift(expression);
1455 panic("TODO binexpr type");
1459 static ir_node *array_access_addr(const array_access_expression_t *expression)
1461 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1462 ir_node *base_addr = expression_to_firm(expression->array_ref);
1463 ir_node *offset = expression_to_firm(expression->index);
1464 offset = create_conv(dbgi, offset, mode_Iu);
1466 type_t *ref_type = skip_typeref(expression->array_ref->base.datatype);
1467 assert(is_type_pointer(ref_type));
1468 pointer_type_t *pointer_type = (pointer_type_t*) ref_type;
1470 unsigned elem_size = get_type_size(pointer_type->points_to);
1471 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1472 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1474 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1479 static ir_node *array_access_to_firm(
1480 const array_access_expression_t *expression)
1482 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1483 ir_node *addr = array_access_addr(expression);
1484 type_t *type = revert_automatic_type_conversion(
1485 (const expression_t*) expression);
1486 type = skip_typeref(type);
1487 ir_type *irtype = get_ir_type(type);
1489 return deref_address(irtype, addr, dbgi);
1492 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1494 type_t *type = expression->type;
1496 type = expression->size_expression->base.datatype;
1497 assert(type != NULL);
1500 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1501 unsigned size = get_type_size(type);
1502 ir_node *size_node = new_Const_long(mode, size);
1507 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1509 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1511 ir_node *cur_block = get_cur_block();
1513 /* create the true block */
1514 ir_node *true_block = new_immBlock();
1516 ir_node *true_val = expression_to_firm(expression->true_expression);
1517 ir_node *true_jmp = new_Jmp();
1519 /* create the false block */
1520 ir_node *false_block = new_immBlock();
1522 ir_node *false_val = expression_to_firm(expression->false_expression);
1523 ir_node *false_jmp = new_Jmp();
1525 /* create the condition evaluation */
1526 set_cur_block(cur_block);
1527 create_condition_evaluation(expression->condition, true_block, false_block);
1528 mature_immBlock(true_block);
1529 mature_immBlock(false_block);
1531 /* create the common block */
1532 ir_node *common_block = new_immBlock();
1533 add_immBlock_pred(common_block, true_jmp);
1534 add_immBlock_pred(common_block, false_jmp);
1535 mature_immBlock(common_block);
1537 /* TODO improve static semantics, so either both or no values are NULL */
1538 if (true_val == NULL || false_val == NULL)
1541 ir_node *in[2] = { true_val, false_val };
1542 ir_mode *mode = get_irn_mode(true_val);
1543 assert(get_irn_mode(false_val) == mode);
1544 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1549 static ir_node *select_addr(const select_expression_t *expression)
1551 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1553 ir_node *compound_addr = expression_to_firm(expression->compound);
1555 declaration_t *entry = expression->compound_entry;
1556 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1557 ir_entity *entity = entry->v.entity;
1559 assert(entity != NULL);
1561 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1566 static ir_node *select_to_firm(const select_expression_t *expression)
1568 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1569 ir_node *addr = select_addr(expression);
1570 type_t *type = revert_automatic_type_conversion(
1571 (const expression_t*) expression);
1572 type = skip_typeref(type);
1573 ir_type *irtype = get_ir_type(type);
1575 return deref_address(irtype, addr, dbgi);
1578 /* Values returned by __builtin_classify_type. */
1579 typedef enum gcc_type_class
1585 enumeral_type_class,
1588 reference_type_class,
1592 function_type_class,
1603 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1605 const type_t *const type = expr->type_expression->base.datatype;
1611 const atomic_type_t *const atomic_type = &type->atomic;
1612 switch (atomic_type->atype) {
1613 // should not be reached
1614 case ATOMIC_TYPE_INVALID:
1618 // gcc cannot do that
1619 case ATOMIC_TYPE_VOID:
1620 tc = void_type_class;
1623 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1624 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1625 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1626 case ATOMIC_TYPE_SHORT:
1627 case ATOMIC_TYPE_USHORT:
1628 case ATOMIC_TYPE_INT:
1629 case ATOMIC_TYPE_UINT:
1630 case ATOMIC_TYPE_LONG:
1631 case ATOMIC_TYPE_ULONG:
1632 case ATOMIC_TYPE_LONGLONG:
1633 case ATOMIC_TYPE_ULONGLONG:
1634 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1635 tc = integer_type_class;
1638 case ATOMIC_TYPE_FLOAT:
1639 case ATOMIC_TYPE_DOUBLE:
1640 case ATOMIC_TYPE_LONG_DOUBLE:
1641 tc = real_type_class;
1644 #ifdef PROVIDE_COMPLEX
1645 case ATOMIC_TYPE_FLOAT_COMPLEX:
1646 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1647 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1648 tc = complex_type_class;
1650 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1651 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1652 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1653 tc = complex_type_class;
1658 panic("Unimplemented case in classify_type_to_firm().");
1663 case TYPE_ARRAY: // gcc handles this as pointer
1664 case TYPE_FUNCTION: // gcc handles this as pointer
1665 case TYPE_POINTER: tc = pointer_type_class; break;
1666 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1667 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1669 // gcc handles this as integer
1670 case TYPE_ENUM: tc = integer_type_class; break;
1673 panic("Unimplemented case in classify_type_to_firm().");
1676 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1677 ir_mode *const mode = mode_Is;
1678 tarval *const tv = new_tarval_from_long(tc, mode);
1679 return new_d_Const(dbgi, mode, tv);
1682 static ir_node *function_name_to_firm(
1683 const string_literal_expression_t *const expr)
1685 if (current_function_name == NULL) {
1686 const source_position_t *const src_pos =
1687 &expr->expression.source_position;
1688 const char *const name = current_function_decl->symbol->string;
1689 current_function_name = string_to_firm(src_pos, "__func__", name);
1692 return current_function_name;
1695 static ir_node *statement_expression_to_firm(const statement_expression_t *expr)
1697 statement_t *statement = expr->statement;
1699 assert(statement->type == STATEMENT_COMPOUND);
1700 return compound_statement_to_firm((compound_statement_t*) statement);
1703 static ir_node *dereference_addr(const unary_expression_t *const expression)
1705 assert(expression->type == UNEXPR_DEREFERENCE);
1706 return expression_to_firm(expression->value);
1709 static ir_node *expression_to_addr(const expression_t *expression)
1711 switch(expression->type) {
1712 case EXPR_REFERENCE:
1713 return reference_addr(&expression->reference);
1714 case EXPR_ARRAY_ACCESS:
1715 return array_access_addr(&expression->array_access);
1717 return select_addr(&expression->select);
1719 return call_expression_to_firm(&expression->call);
1721 const unary_expression_t *const unary_expr = &expression->unary;
1722 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1723 return dereference_addr(unary_expr);
1730 panic("trying to get address of non-lvalue");
1733 static ir_node *_expression_to_firm(const expression_t *expression)
1735 switch(expression->type) {
1737 return const_to_firm(&expression->conste);
1738 case EXPR_STRING_LITERAL:
1739 return string_literal_to_firm(&expression->string);
1740 case EXPR_WIDE_STRING_LITERAL:
1741 return wide_string_literal_to_firm(&expression->wide_string);
1742 case EXPR_REFERENCE:
1743 return reference_expression_to_firm(&expression->reference);
1745 return call_expression_to_firm(&expression->call);
1747 return unary_expression_to_firm(&expression->unary);
1749 return binary_expression_to_firm(&expression->binary);
1750 case EXPR_ARRAY_ACCESS:
1751 return array_access_to_firm(&expression->array_access);
1753 return sizeof_to_firm(&expression->sizeofe);
1754 case EXPR_CONDITIONAL:
1755 return conditional_to_firm(&expression->conditional);
1757 return select_to_firm(&expression->select);
1758 case EXPR_CLASSIFY_TYPE:
1759 return classify_type_to_firm(&expression->classify_type);
1761 case EXPR_PRETTY_FUNCTION:
1762 return function_name_to_firm(&expression->string);
1763 case EXPR_STATEMENT:
1764 return statement_expression_to_firm(&expression->statement);
1767 case EXPR_BUILTIN_SYMBOL:
1768 panic("unimplemented expression found");
1774 panic("invalid expression found");
1777 static ir_node *expression_to_firm(const expression_t *expression)
1779 ir_node *res = _expression_to_firm(expression);
1781 if(res != NULL && get_irn_mode(res) == mode_b) {
1782 ir_mode *mode = get_ir_mode(expression->base.datatype);
1783 res = create_conv(NULL, res, mode);
1789 static ir_node *expression_to_modeb(const expression_t *expression)
1791 ir_node *res = _expression_to_firm(expression);
1792 res = create_conv(NULL, res, mode_b);
1798 * create a short-circuit expression evaluation that tries to construct
1799 * efficient control flow structures for &&, || and ! expressions
1801 static void create_condition_evaluation(const expression_t *expression,
1802 ir_node *true_block,
1803 ir_node *false_block)
1805 switch(expression->type) {
1807 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1808 if(unary_expression->type == UNEXPR_NOT) {
1809 create_condition_evaluation(unary_expression->value, false_block,
1816 binary_expression_t *binary_expression
1817 = (binary_expression_t*) expression;
1818 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1819 ir_node *cur_block = get_cur_block();
1820 ir_node *extra_block = new_immBlock();
1821 set_cur_block(cur_block);
1822 create_condition_evaluation(binary_expression->left, extra_block,
1824 mature_immBlock(extra_block);
1825 set_cur_block(extra_block);
1826 create_condition_evaluation(binary_expression->right, true_block,
1830 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1831 ir_node *cur_block = get_cur_block();
1832 ir_node *extra_block = new_immBlock();
1833 set_cur_block(cur_block);
1834 create_condition_evaluation(binary_expression->left, true_block,
1836 mature_immBlock(extra_block);
1837 set_cur_block(extra_block);
1838 create_condition_evaluation(binary_expression->right, true_block,
1848 dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
1849 ir_node *condition = expression_to_modeb(expression);
1850 ir_node *cond = new_d_Cond(dbgi, condition);
1851 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1852 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1854 add_immBlock_pred(true_block, true_proj);
1855 add_immBlock_pred(false_block, false_proj);
1857 set_cur_block(NULL);
1860 static void return_statement_to_firm(return_statement_t *statement)
1862 if(get_cur_block() == NULL)
1865 ir_type *func_irtype = get_ir_type(current_function_decl->type);
1867 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1871 if(get_method_n_ress(func_irtype) > 0) {
1872 ir_type *res_type = get_method_res_type(func_irtype, 0);
1874 if(statement->return_value != NULL) {
1875 ir_node *node = expression_to_firm(statement->return_value);
1876 node = do_strict_conv(dbgi, node);
1880 if(is_compound_type(res_type)) {
1883 mode = get_type_mode(res_type);
1885 in[0] = new_Unknown(mode);
1889 /* build return_value for its side effects */
1890 if(statement->return_value != NULL) {
1891 expression_to_firm(statement->return_value);
1896 ir_node *store = get_store();
1897 ir_node *ret = new_d_Return(dbgi, store, in_len, in);
1899 ir_node *end_block = get_irg_end_block(current_ir_graph);
1900 add_immBlock_pred(end_block, ret);
1902 set_cur_block(NULL);
1905 static ir_node *expression_statement_to_firm(expression_statement_t *statement)
1907 if(get_cur_block() == NULL)
1910 return expression_to_firm(statement->expression);
1913 static ir_node *compound_statement_to_firm(compound_statement_t *compound)
1915 ir_node *result = NULL;
1916 statement_t *statement = compound->statements;
1917 for( ; statement != NULL; statement = statement->base.next) {
1918 //context2firm(&statement->context);
1920 if(statement->base.next == NULL
1921 && statement->type == STATEMENT_EXPRESSION) {
1922 result = expression_statement_to_firm(
1923 (expression_statement_t*) statement);
1926 statement_to_firm(statement);
1932 static void if_statement_to_firm(if_statement_t *statement)
1934 ir_node *cur_block = get_cur_block();
1936 ir_node *fallthrough_block = new_immBlock();
1938 /* the true (blocks) */
1939 ir_node *true_block;
1940 if (statement->true_statement != NULL) {
1941 true_block = new_immBlock();
1942 statement_to_firm(statement->true_statement);
1943 if(get_cur_block() != NULL) {
1944 ir_node *jmp = new_Jmp();
1945 add_immBlock_pred(fallthrough_block, jmp);
1948 true_block = fallthrough_block;
1951 /* the false (blocks) */
1952 ir_node *false_block;
1953 if(statement->false_statement != NULL) {
1954 false_block = new_immBlock();
1956 statement_to_firm(statement->false_statement);
1957 if(get_cur_block() != NULL) {
1958 ir_node *jmp = new_Jmp();
1959 add_immBlock_pred(fallthrough_block, jmp);
1962 false_block = fallthrough_block;
1965 /* create the condition */
1966 if(cur_block != NULL) {
1967 set_cur_block(cur_block);
1968 create_condition_evaluation(statement->condition, true_block,
1972 mature_immBlock(true_block);
1973 if(false_block != fallthrough_block) {
1974 mature_immBlock(false_block);
1976 mature_immBlock(fallthrough_block);
1978 set_cur_block(fallthrough_block);
1981 static void while_statement_to_firm(while_statement_t *statement)
1983 ir_node *jmp = NULL;
1984 if(get_cur_block() != NULL) {
1988 /* create the header block */
1989 ir_node *header_block = new_immBlock();
1991 add_immBlock_pred(header_block, jmp);
1994 /* the false block */
1995 ir_node *false_block = new_immBlock();
1998 ir_node *body_block;
1999 if (statement->body != NULL) {
2000 ir_node *old_continue_label = continue_label;
2001 ir_node *old_break_label = break_label;
2002 continue_label = header_block;
2003 break_label = false_block;
2005 body_block = new_immBlock();
2006 statement_to_firm(statement->body);
2008 assert(continue_label == header_block);
2009 assert(break_label == false_block);
2010 continue_label = old_continue_label;
2011 break_label = old_break_label;
2013 if(get_cur_block() != NULL) {
2015 add_immBlock_pred(header_block, jmp);
2018 body_block = header_block;
2021 /* create the condition */
2022 set_cur_block(header_block);
2024 create_condition_evaluation(statement->condition, body_block, false_block);
2025 mature_immBlock(body_block);
2026 mature_immBlock(false_block);
2027 mature_immBlock(header_block);
2029 set_cur_block(false_block);
2032 static void do_while_statement_to_firm(do_while_statement_t *statement)
2034 ir_node *jmp = NULL;
2035 if(get_cur_block() != NULL) {
2039 /* create the header block */
2040 ir_node *header_block = new_immBlock();
2042 /* the false block */
2043 ir_node *false_block = new_immBlock();
2046 ir_node *body_block = new_immBlock();
2048 add_immBlock_pred(body_block, jmp);
2051 if (statement->body != NULL) {
2052 ir_node *old_continue_label = continue_label;
2053 ir_node *old_break_label = break_label;
2054 continue_label = header_block;
2055 break_label = false_block;
2057 statement_to_firm(statement->body);
2059 assert(continue_label == header_block);
2060 assert(break_label == false_block);
2061 continue_label = old_continue_label;
2062 break_label = old_break_label;
2064 if (get_cur_block() == NULL) {
2065 mature_immBlock(header_block);
2066 mature_immBlock(body_block);
2067 mature_immBlock(false_block);
2072 ir_node *body_jmp = new_Jmp();
2073 add_immBlock_pred(header_block, body_jmp);
2074 mature_immBlock(header_block);
2076 /* create the condition */
2077 set_cur_block(header_block);
2079 create_condition_evaluation(statement->condition, body_block, false_block);
2080 mature_immBlock(body_block);
2081 mature_immBlock(false_block);
2082 mature_immBlock(header_block);
2084 set_cur_block(false_block);
2087 static void for_statement_to_firm(for_statement_t *statement)
2089 ir_node *jmp = NULL;
2090 if (get_cur_block() != NULL) {
2091 if(statement->initialisation != NULL) {
2092 expression_to_firm(statement->initialisation);
2097 /* create the step block */
2098 ir_node *const step_block = new_immBlock();
2099 if (statement->step != NULL) {
2100 expression_to_firm(statement->step);
2102 ir_node *const step_jmp = new_Jmp();
2104 /* create the header block */
2105 ir_node *const header_block = new_immBlock();
2107 add_immBlock_pred(header_block, jmp);
2109 add_immBlock_pred(header_block, step_jmp);
2111 /* the false block */
2112 ir_node *const false_block = new_immBlock();
2115 ir_node * body_block;
2116 if (statement->body != NULL) {
2117 ir_node *const old_continue_label = continue_label;
2118 ir_node *const old_break_label = break_label;
2119 continue_label = step_block;
2120 break_label = false_block;
2122 body_block = new_immBlock();
2123 statement_to_firm(statement->body);
2125 assert(continue_label == step_block);
2126 assert(break_label == false_block);
2127 continue_label = old_continue_label;
2128 break_label = old_break_label;
2130 if (get_cur_block() != NULL) {
2132 add_immBlock_pred(step_block, jmp);
2135 body_block = step_block;
2138 /* create the condition */
2139 set_cur_block(header_block);
2140 if (statement->condition != NULL) {
2141 create_condition_evaluation(statement->condition, body_block,
2144 keep_alive(header_block);
2146 add_immBlock_pred(body_block, jmp);
2149 mature_immBlock(body_block);
2150 mature_immBlock(false_block);
2151 mature_immBlock(step_block);
2152 mature_immBlock(header_block);
2153 mature_immBlock(false_block);
2155 set_cur_block(false_block);
2158 static void create_declaration_entity(declaration_t *declaration,
2159 declaration_type_t declaration_type,
2160 ir_type *parent_type)
2162 ident *id = new_id_from_str(declaration->symbol->string);
2163 ir_type *irtype = get_ir_type(declaration->type);
2164 ir_entity *entity = new_entity(parent_type, id, irtype);
2165 set_entity_ld_ident(entity, id);
2167 declaration->declaration_type = (unsigned char) declaration_type;
2168 declaration->v.entity = entity;
2169 set_entity_variability(entity, variability_uninitialized);
2170 /* TODO: visibility? */
2173 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
2175 enum compound_graph_entry_type_t {
2176 COMPOUND_GRAPH_ENTRY_ARRAY,
2177 COMPOUND_GRAPH_ENTRY_COMPOUND
2180 struct compound_graph_path_entry_t {
2186 compound_graph_path_entry_t *prev;
2189 static void create_initializer_object(initializer_t *initializer, type_t *type,
2190 ir_entity *entity, compound_graph_path_entry_t *entry, int len);
2192 static compound_graph_path *create_compound_path(ir_type *type,
2193 compound_graph_path_entry_t *entry, int len)
2195 compound_graph_path *path = new_compound_graph_path(type, len);
2198 for( ; entry != NULL; entry = entry->prev, --i) {
2200 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2201 set_compound_graph_path_node(path, i, entry->v.entity);
2203 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2204 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2212 static void create_initializer_value(initializer_value_t *initializer,
2214 compound_graph_path_entry_t *entry,
2217 ir_node *node = expression_to_firm(initializer->value);
2218 ir_type *type = get_entity_type(entity);
2219 compound_graph_path *path = create_compound_path(type, entry, len);
2220 add_compound_ent_value_w_path(entity, node, path);
2223 static void create_initializer_compound(initializer_list_t *initializer,
2224 compound_type_t *type,
2226 compound_graph_path_entry_t *last_entry,
2229 declaration_t *compound_declaration = type->declaration;
2231 declaration_t *compound_entry = compound_declaration->context.declarations;
2233 compound_graph_path_entry_t entry;
2234 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2235 entry.prev = last_entry;
2239 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2240 if(compound_entry->symbol == NULL)
2242 if(compound_entry->namespc != NAMESPACE_NORMAL)
2245 if(i >= initializer->len)
2248 entry.v.entity = compound_entry->v.entity;
2250 initializer_t *sub_initializer = initializer->initializers[i];
2252 assert(compound_entry != NULL);
2253 assert(compound_entry->declaration_type
2254 == DECLARATION_TYPE_COMPOUND_MEMBER);
2256 if(sub_initializer->type == INITIALIZER_VALUE) {
2257 create_initializer_value(&sub_initializer->value,
2258 entity, &entry, len);
2260 type_t *entry_type = skip_typeref(compound_entry->type);
2261 create_initializer_object(sub_initializer, entry_type, entity,
2269 static void create_initializer_array(initializer_list_t *initializer,
2270 array_type_t *type, ir_entity *entity,
2271 compound_graph_path_entry_t *last_entry,
2274 type_t *element_type = type->element_type;
2275 element_type = skip_typeref(element_type);
2277 compound_graph_path_entry_t entry;
2278 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2279 entry.prev = last_entry;
2283 for(i = 0; i < initializer->len; ++i) {
2284 entry.v.array_index = i;
2286 initializer_t *sub_initializer = initializer->initializers[i];
2288 if(sub_initializer->type == INITIALIZER_VALUE) {
2289 create_initializer_value(&sub_initializer->value,
2290 entity, &entry, len);
2292 create_initializer_object(sub_initializer, element_type, entity,
2298 /* TODO: initialize rest... */
2299 if(type->size_expression != NULL) {
2300 size_t array_len = fold_constant(type->size_expression);
2301 for( ; i < array_len; ++i) {
2308 static void create_initializer_string(initializer_string_t *initializer,
2309 array_type_t *type, ir_entity *entity,
2310 compound_graph_path_entry_t *last_entry,
2313 type_t *element_type = type->element_type;
2314 element_type = skip_typeref(element_type);
2316 compound_graph_path_entry_t entry;
2317 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2318 entry.prev = last_entry;
2321 ir_type *irtype = get_entity_type(entity);
2322 size_t arr_len = get_array_type_size(type);
2323 const char *p = initializer->string;
2325 for(i = 0; i < arr_len; ++i, ++p) {
2326 entry.v.array_index = i;
2328 ir_node *node = new_Const_long(mode_Bs, *p);
2329 compound_graph_path *path = create_compound_path(irtype, &entry, len);
2330 add_compound_ent_value_w_path(entity, node, path);
2337 static void create_initializer_object(initializer_t *initializer, type_t *type,
2338 ir_entity *entity, compound_graph_path_entry_t *entry, int len)
2340 if(is_type_array(type)) {
2341 array_type_t *array_type = &type->array;
2343 if(initializer->type == INITIALIZER_STRING) {
2344 initializer_string_t *string = &initializer->string;
2345 create_initializer_string(string, array_type, entity, entry, len);
2347 assert(initializer->type == INITIALIZER_LIST);
2348 initializer_list_t *list = &initializer->list;
2349 create_initializer_array(list, array_type, entity, entry, len);
2352 assert(initializer->type == INITIALIZER_LIST);
2353 initializer_list_t *list = &initializer->list;
2355 assert(is_type_compound(type));
2356 compound_type_t *compound_type = &type->compound;
2357 create_initializer_compound(list, compound_type, entity, entry, len);
2361 static void create_initializer_local_variable_entity(declaration_t *declaration)
2363 initializer_t *initializer = declaration->init.initializer;
2364 dbg_info *dbgi = get_dbg_info(&declaration->source_position);
2365 ir_entity *entity = declaration->v.entity;
2366 ir_node *memory = get_store();
2367 ir_node *nomem = new_NoMem();
2368 ir_node *frame = get_irg_frame(current_ir_graph);
2369 ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity);
2371 if(is_atomic_entity(entity)) {
2372 assert(initializer->type == INITIALIZER_VALUE);
2373 initializer_value_t *initializer_value = &initializer->value;
2375 ir_node *value = expression_to_firm(initializer_value->value);
2376 ir_node *store = new_d_Store(dbgi, memory, addr, value);
2377 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
2378 set_store(store_mem);
2382 /* create a "template" entity which is copied to the entity on the stack */
2383 ident *id = unique_ident("initializer");
2384 ir_type *irtype = get_ir_type(declaration->type);
2385 ir_type *global_type = get_glob_type();
2386 ir_entity *init_entity = new_entity(global_type, id, irtype);
2387 set_entity_ld_ident(init_entity, id);
2389 set_entity_variability(init_entity, variability_initialized);
2390 set_entity_visibility(init_entity, visibility_local);
2392 ir_graph *old_current_ir_graph = current_ir_graph;
2393 current_ir_graph = get_const_code_irg();
2395 type_t *type = skip_typeref(declaration->type);
2396 create_initializer_object(initializer, type, init_entity, NULL, 0);
2398 assert(current_ir_graph == get_const_code_irg());
2399 current_ir_graph = old_current_ir_graph;
2401 ir_node *src_addr = create_symconst(dbgi, init_entity);
2402 ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
2404 ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular);
2405 set_store(copyb_mem);
2408 static void create_initializer(declaration_t *declaration)
2410 initializer_t *initializer = declaration->init.initializer;
2411 if(initializer == NULL)
2414 declaration_type_t declaration_type
2415 = (declaration_type_t) declaration->declaration_type;
2416 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) {
2417 create_initializer_local_variable_entity(declaration);
2421 if(initializer->type == INITIALIZER_VALUE) {
2422 initializer_value_t *initializer_value = &initializer->value;
2424 ir_node *value = expression_to_firm(initializer_value->value);
2426 if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2427 set_value(declaration->v.value_number, value);
2429 assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2431 ir_entity *entity = declaration->v.entity;
2433 set_entity_variability(entity, variability_initialized);
2434 set_atomic_ent_value(entity, value);
2437 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2438 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2440 ir_entity *entity = declaration->v.entity;
2441 set_entity_variability(entity, variability_initialized);
2443 type_t *type = skip_typeref(declaration->type);
2444 create_initializer_object(initializer, type, entity, NULL, 0);
2448 static void create_local_variable(declaration_t *declaration)
2450 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2452 bool needs_entity = declaration->address_taken;
2453 type_t *type = skip_typeref(declaration->type);
2455 if(is_type_array(type) || is_type_compound(type)) {
2456 needs_entity = true;
2460 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2461 create_declaration_entity(declaration,
2462 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2465 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2466 declaration->v.value_number = next_value_number_function;
2467 ++next_value_number_function;
2470 create_initializer(declaration);
2473 static void create_local_static_variable(declaration_t *declaration)
2475 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2477 type_t *type = skip_typeref(declaration->type);
2478 ir_type *global_type = get_glob_type();
2479 ident *id = unique_ident(declaration->symbol->string);
2480 ir_type *irtype = get_ir_type(type);
2481 ir_entity *entity = new_entity(global_type, id, irtype);
2482 set_entity_ld_ident(entity, id);
2484 declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE;
2485 declaration->v.entity = entity;
2486 set_entity_variability(entity, variability_uninitialized);
2487 set_entity_visibility(entity, visibility_local);
2489 ir_graph *old_current_ir_graph = current_ir_graph;
2490 current_ir_graph = get_const_code_irg();
2492 create_initializer(declaration);
2494 assert(current_ir_graph == get_const_code_irg());
2495 current_ir_graph = old_current_ir_graph;
2498 static void declaration_statement_to_firm(declaration_statement_t *statement)
2500 declaration_t *declaration = statement->declarations_begin;
2501 declaration_t *end = statement->declarations_end->next;
2502 for( ; declaration != end; declaration = declaration->next) {
2503 type_t *type = skip_typeref(declaration->type);
2505 switch ((storage_class_tag_t) declaration->storage_class) {
2506 case STORAGE_CLASS_TYPEDEF:
2508 case STORAGE_CLASS_STATIC:
2509 create_local_static_variable(declaration);
2511 case STORAGE_CLASS_ENUM_ENTRY:
2512 panic("enum entry declaration in local block found");
2513 case STORAGE_CLASS_EXTERN:
2514 panic("extern declaration in local block found");
2515 case STORAGE_CLASS_NONE:
2516 case STORAGE_CLASS_AUTO:
2517 case STORAGE_CLASS_REGISTER:
2518 if(is_type_function(type)) {
2519 panic("nested functions not supported yet");
2521 create_local_variable(declaration);
2524 case STORAGE_CLASS_THREAD:
2525 case STORAGE_CLASS_THREAD_EXTERN:
2526 case STORAGE_CLASS_THREAD_STATIC:
2529 panic("invalid storage class found");
2533 static void create_jump_statement(const statement_t *statement,
2534 ir_node *target_block)
2536 if(get_cur_block() == NULL)
2539 dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
2540 ir_node *jump = new_d_Jmp(dbgi);
2541 add_immBlock_pred(target_block, jump);
2543 set_cur_block(NULL);
2546 static void switch_statement_to_firm(const switch_statement_t *statement)
2548 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2550 ir_node *expression = expression_to_firm(statement->expression);
2551 ir_node *cond = new_d_Cond(dbgi, expression);
2552 ir_node *break_block = new_immBlock();
2554 set_cur_block(NULL);
2556 ir_node *const old_switch_cond = current_switch_cond;
2557 ir_node *const old_break_label = break_label;
2558 const bool old_saw_default_label = saw_default_label;
2559 current_switch_cond = cond;
2560 break_label = break_block;
2562 statement_to_firm(statement->body);
2564 if(get_cur_block() != NULL) {
2565 ir_node *jmp = new_Jmp();
2566 add_immBlock_pred(break_block, jmp);
2569 if (!saw_default_label) {
2570 set_cur_block(get_nodes_block(cond));
2571 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2572 MAGIC_DEFAULT_PN_NUMBER);
2573 add_immBlock_pred(break_block, proj);
2576 assert(current_switch_cond == cond);
2577 assert(break_label == break_block);
2578 current_switch_cond = old_switch_cond;
2579 break_label = old_break_label;
2580 saw_default_label = old_saw_default_label;
2582 mature_immBlock(break_block);
2583 set_cur_block(break_block);
2586 static long fold_constant(const expression_t *expression)
2588 ir_graph *old_current_ir_graph = current_ir_graph;
2589 current_ir_graph = get_const_code_irg();
2591 ir_node *cnst = expression_to_firm(expression);
2592 if(!is_Const(cnst)) {
2593 panic("couldn't fold constantl");
2595 tarval *tv = get_Const_tarval(cnst);
2596 if(!tarval_is_long(tv)) {
2597 panic("folded constant not an integer");
2600 long res = get_tarval_long(tv);
2602 current_ir_graph = old_current_ir_graph;
2606 static void case_label_to_firm(const case_label_statement_t *statement)
2608 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2610 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2612 /* let's create a node and hope firm constant folding creates a Const
2615 set_cur_block(get_nodes_block(current_switch_cond));
2616 if(statement->expression) {
2617 long pn = fold_constant(statement->expression);
2618 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2619 /* oops someone detected our cheating... */
2620 panic("magic default pn used");
2622 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2624 saw_default_label = true;
2625 proj = new_d_defaultProj(dbgi, current_switch_cond,
2626 MAGIC_DEFAULT_PN_NUMBER);
2629 ir_node *block = new_immBlock();
2630 if (fallthrough != NULL) {
2631 add_immBlock_pred(block, fallthrough);
2633 add_immBlock_pred(block, proj);
2634 mature_immBlock(block);
2636 statement_to_firm(statement->label_statement);
2639 static ir_node *get_label_block(declaration_t *label)
2641 assert(label->namespc == NAMESPACE_LABEL);
2643 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2644 return label->v.block;
2646 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2648 ir_node *old_cur_block = get_cur_block();
2649 ir_node *block = new_immBlock();
2650 set_cur_block(old_cur_block);
2652 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2653 label->v.block = block;
2655 ARR_APP1(ir_node *, imature_blocks, block);
2660 static void label_to_firm(const label_statement_t *statement)
2662 ir_node *block = get_label_block(statement->label);
2664 if(get_cur_block() != NULL) {
2665 ir_node *jmp = new_Jmp();
2666 add_immBlock_pred(block, jmp);
2669 set_cur_block(block);
2672 statement_to_firm(statement->label_statement);
2675 static void goto_to_firm(const goto_statement_t *statement)
2677 if(get_cur_block() == NULL)
2680 ir_node *block = get_label_block(statement->label);
2681 ir_node *jmp = new_Jmp();
2682 add_immBlock_pred(block, jmp);
2684 set_cur_block(NULL);
2687 static void statement_to_firm(statement_t *statement)
2689 switch(statement->type) {
2690 case STATEMENT_INVALID:
2691 panic("invalid statement found");
2692 case STATEMENT_COMPOUND:
2693 compound_statement_to_firm(&statement->compound);
2695 case STATEMENT_RETURN:
2696 return_statement_to_firm(&statement->returns);
2698 case STATEMENT_EXPRESSION:
2699 expression_statement_to_firm(&statement->expression);
2702 if_statement_to_firm(&statement->ifs);
2704 case STATEMENT_WHILE:
2705 while_statement_to_firm(&statement->whiles);
2707 case STATEMENT_DO_WHILE:
2708 do_while_statement_to_firm(&statement->do_while);
2710 case STATEMENT_DECLARATION:
2711 declaration_statement_to_firm(&statement->declaration);
2713 case STATEMENT_BREAK:
2714 create_jump_statement(statement, break_label);
2716 case STATEMENT_CONTINUE:
2717 create_jump_statement(statement, continue_label);
2719 case STATEMENT_SWITCH:
2720 switch_statement_to_firm(&statement->switchs);
2722 case STATEMENT_CASE_LABEL:
2723 case_label_to_firm(&statement->case_label);
2726 for_statement_to_firm(&statement->fors);
2728 case STATEMENT_LABEL:
2729 label_to_firm(&statement->label);
2731 case STATEMENT_GOTO:
2732 goto_to_firm(&statement->gotos);
2737 panic("Statement not implemented\n");
2740 static int count_local_declarations(const declaration_t * decl,
2741 const declaration_t *const end)
2744 for (; decl != end; decl = decl->next) {
2745 const type_t *type = skip_typeref(decl->type);
2746 switch (type->type) {
2750 if (!decl->address_taken)
2760 static int count_decls_in_stmts(const statement_t *stmt)
2763 for (; stmt != NULL; stmt = stmt->base.next) {
2764 switch (stmt->type) {
2765 case STATEMENT_DECLARATION: {
2766 const declaration_statement_t *const decl_stmt =
2767 (const declaration_statement_t*)stmt;
2768 count += count_local_declarations(decl_stmt->declarations_begin,
2769 decl_stmt->declarations_end->next);
2773 case STATEMENT_COMPOUND: {
2774 const compound_statement_t *const comp =
2775 (const compound_statement_t*)stmt;
2776 count += count_decls_in_stmts(comp->statements);
2780 case STATEMENT_IF: {
2781 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2782 count += count_decls_in_stmts(if_stmt->true_statement);
2783 count += count_decls_in_stmts(if_stmt->false_statement);
2787 case STATEMENT_SWITCH: {
2788 const switch_statement_t *const switch_stmt =
2789 (const switch_statement_t*)stmt;
2790 count += count_decls_in_stmts(switch_stmt->body);
2794 case STATEMENT_LABEL: {
2795 const label_statement_t *const label_stmt =
2796 (const label_statement_t*)stmt;
2797 count += count_decls_in_stmts(label_stmt->label_statement);
2801 case STATEMENT_WHILE: {
2802 const while_statement_t *const while_stmt =
2803 (const while_statement_t*)stmt;
2804 count += count_decls_in_stmts(while_stmt->body);
2808 case STATEMENT_DO_WHILE: {
2809 const do_while_statement_t *const do_while_stmt =
2810 (const do_while_statement_t*)stmt;
2811 count += count_decls_in_stmts(do_while_stmt->body);
2815 case STATEMENT_FOR: {
2816 const for_statement_t *const for_stmt =
2817 (const for_statement_t*)stmt;
2818 /* TODO initialisation */
2819 count += count_decls_in_stmts(for_stmt->body);
2824 case STATEMENT_BREAK:
2825 case STATEMENT_CASE_LABEL:
2826 case STATEMENT_CONTINUE:
2827 case STATEMENT_EXPRESSION:
2828 case STATEMENT_GOTO:
2829 case STATEMENT_INVALID:
2830 case STATEMENT_RETURN:
2837 static int get_function_n_local_vars(declaration_t *declaration)
2841 /* count parameters */
2842 count += count_local_declarations(declaration->context.declarations, NULL);
2844 /* count local variables declared in body */
2845 count += count_decls_in_stmts(declaration->init.statement);
2847 /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions
2848 * for expression statements... */
2854 static void initialize_function_parameters(declaration_t *declaration)
2856 ir_graph *irg = current_ir_graph;
2857 ir_node *args = get_irg_args(irg);
2858 ir_node *start_block = get_irg_start_block(irg);
2859 ir_type *function_irtype = get_ir_type(declaration->type);
2862 declaration_t *parameter = declaration->context.declarations;
2863 for( ; parameter != NULL; parameter = parameter->next, ++n) {
2864 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2865 type_t *type = skip_typeref(parameter->type);
2867 bool needs_entity = parameter->address_taken;
2868 assert(!is_type_array(type));
2869 if(is_type_compound(type)) {
2870 needs_entity = true;
2874 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
2875 ident *id = new_id_from_str(parameter->symbol->string);
2876 set_entity_ident(entity, id);
2878 parameter->declaration_type
2879 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
2880 parameter->v.entity = entity;
2884 ir_mode *mode = get_ir_mode(parameter->type);
2886 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2888 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2889 parameter->v.value_number = next_value_number_function;
2890 ++next_value_number_function;
2892 set_value(parameter->v.value_number, proj);
2896 static void create_function(declaration_t *declaration)
2898 ir_entity *function_entity = get_function_entity(declaration);
2900 if(declaration->init.statement == NULL)
2903 current_function_decl = declaration;
2904 current_function_name = NULL;
2906 assert(imature_blocks == NULL);
2907 imature_blocks = NEW_ARR_F(ir_node*, 0);
2909 int n_local_vars = get_function_n_local_vars(declaration);
2910 ir_graph *irg = new_ir_graph(function_entity, n_local_vars);
2911 ir_node *first_block = get_cur_block();
2913 next_value_number_function = 0;
2914 initialize_function_parameters(declaration);
2916 statement_to_firm(declaration->init.statement);
2918 ir_node *end_block = get_irg_end_block(irg);
2920 /* do we have a return statement yet? */
2921 if(get_cur_block() != NULL) {
2922 type_t *type = skip_typeref(declaration->type);
2923 assert(is_type_function(type));
2924 const function_type_t *func_type = &type->function;
2925 const type_t *return_type
2926 = skip_typeref(func_type->return_type);
2929 if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
2930 ret = new_Return(get_store(), 0, NULL);
2933 if(is_type_scalar(return_type)) {
2934 mode = get_ir_mode(func_type->return_type);
2940 // ยง5.1.2.2.3 main implicitly returns 0
2941 if (strcmp(declaration->symbol->string, "main") == 0) {
2942 in[0] = new_Const(mode, get_mode_null(mode));
2944 in[0] = new_Unknown(mode);
2946 ret = new_Return(get_store(), 1, in);
2948 add_immBlock_pred(end_block, ret);
2951 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2952 mature_immBlock(imature_blocks[i]);
2954 DEL_ARR_F(imature_blocks);
2955 imature_blocks = NULL;
2957 mature_immBlock(first_block);
2958 mature_immBlock(end_block);
2960 irg_finalize_cons(irg);
2962 /* finalize the frame type */
2963 ir_type *frame_type = get_irg_frame_type(irg);
2964 int n = get_compound_n_members(frame_type);
2967 for(int i = 0; i < n; ++i) {
2968 ir_entity *entity = get_compound_member(frame_type, i);
2969 ir_type *entity_type = get_entity_type(entity);
2971 int align = get_type_alignment_bytes(entity_type);
2972 if(align > align_all)
2976 misalign = offset % align;
2978 offset += align - misalign;
2982 set_entity_offset(entity, offset);
2983 offset += get_type_size_bytes(entity_type);
2985 set_type_size_bytes(frame_type, offset);
2986 set_type_alignment_bytes(frame_type, align_all);
2987 set_type_state(frame_type, layout_fixed);
2992 static void create_global_variable(declaration_t *declaration)
2996 switch ((storage_class_tag_t)declaration->storage_class) {
2997 case STORAGE_CLASS_STATIC:
2998 vis = visibility_local;
3001 case STORAGE_CLASS_EXTERN:
3002 vis = visibility_external_allocated;
3005 case STORAGE_CLASS_NONE:
3006 vis = visibility_external_visible;
3009 case STORAGE_CLASS_THREAD:
3010 vis = visibility_external_visible;
3013 case STORAGE_CLASS_THREAD_EXTERN:
3014 vis = visibility_external_allocated;
3017 case STORAGE_CLASS_THREAD_STATIC:
3018 vis = visibility_local;
3022 var_type = get_tls_type();
3026 var_type = get_glob_type();
3030 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
3032 set_entity_visibility(declaration->v.entity, vis);
3034 current_ir_graph = get_const_code_irg();
3035 create_initializer(declaration);
3038 case STORAGE_CLASS_TYPEDEF:
3039 case STORAGE_CLASS_AUTO:
3040 case STORAGE_CLASS_REGISTER:
3041 case STORAGE_CLASS_ENUM_ENTRY:
3044 panic("Invalid storage class for global variable");
3047 static void context_to_firm(context_t *context)
3049 /* first pass: create declarations */
3050 declaration_t *declaration = context->declarations;
3051 for( ; declaration != NULL; declaration = declaration->next) {
3052 if(declaration->namespc != NAMESPACE_NORMAL)
3054 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3055 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3057 if(declaration->symbol == NULL)
3060 type_t *type = skip_typeref(declaration->type);
3061 if(is_type_function(type)) {
3062 get_function_entity(declaration);
3064 create_global_variable(declaration);
3068 /* second pass: create code */
3069 declaration = context->declarations;
3070 for( ; declaration != NULL; declaration = declaration->next) {
3071 if(declaration->namespc != NAMESPACE_NORMAL)
3073 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
3074 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
3076 if(declaration->symbol == NULL)
3079 type_t *type = declaration->type;
3080 if(type->type != TYPE_FUNCTION)
3083 create_function(declaration);
3087 void translation_unit_to_firm(translation_unit_t *unit)
3089 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
3090 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
3091 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
3093 ir_type_int = get_ir_type(type_int);
3094 ir_type_const_char = get_ir_type(type_const_char);
3095 ir_type_wchar_t = get_ir_type(type_wchar_t);
3096 ir_type_void = get_ir_type(type_int); /* we don't have a real void
3099 type_void->base.firm_type = ir_type_void;
3101 /* just to be sure */
3102 continue_label = NULL;
3104 current_switch_cond = NULL;
3106 context_to_firm(& unit->context);