9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
20 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
22 static ir_type *ir_type_const_char;
23 static ir_type *ir_type_void;
24 static ir_type *ir_type_int;
25 static ir_type *ir_type_void_ptr;
27 static type_t *type_const_char;
28 static type_t *type_void;
29 static type_t *type_int;
31 static int next_value_number_function;
32 static ir_node *continue_label;
33 static ir_node *break_label;
34 static ir_node *current_switch_cond;
35 static bool saw_default_label;
36 static ir_node **imature_blocks;
38 static const declaration_t *current_function_decl;
39 static ir_node *current_function_name;
41 typedef enum declaration_type_t {
42 DECLARATION_TYPE_UNKNOWN,
43 DECLARATION_TYPE_FUNCTION,
44 DECLARATION_TYPE_GLOBAL_VARIABLE,
45 DECLARATION_TYPE_LOCAL_VARIABLE,
46 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
47 DECLARATION_TYPE_COMPOUND_MEMBER,
48 DECLARATION_TYPE_LABEL_BLOCK,
51 static ir_type *get_ir_type(type_t *type);
53 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
57 const declaration_t *declaration = & value_numbers[pos]->declaration;
59 print_warning_prefix(declaration->source_position);
60 fprintf(stderr, "variable '%s' might be used uninitialized\n",
61 declaration->symbol->string);
63 fprintf(stderr, "Some variable might be used uninitialized\n");
64 return new_r_Unknown(irg, mode);
67 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
69 const source_position_t *pos = (const source_position_t*) dbg;
72 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
76 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
78 const source_position_t *pos = (const source_position_t*) dbg;
83 return pos->input_name;
86 void init_ast2firm(void)
88 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
89 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
90 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
92 ir_type_int = get_ir_type(type_int);
93 ir_type_const_char = get_ir_type(type_const_char);
94 ir_type_void = get_ir_type(type_int); /* we don't have a real void
96 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
97 ir_type_void, mode_P_data);
99 type_void->firm_type = ir_type_void;
102 void exit_ast2firm(void)
106 static unsigned unique_id = 0;
108 static ident *unique_ident(const char *tag)
112 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
114 return new_id_from_str(buf);
117 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
119 switch(atomic_type->atype) {
120 case ATOMIC_TYPE_SCHAR:
121 case ATOMIC_TYPE_CHAR:
123 case ATOMIC_TYPE_UCHAR:
125 case ATOMIC_TYPE_SHORT:
127 case ATOMIC_TYPE_USHORT:
129 case ATOMIC_TYPE_LONG:
130 case ATOMIC_TYPE_INT:
132 case ATOMIC_TYPE_ULONG:
133 case ATOMIC_TYPE_UINT:
135 case ATOMIC_TYPE_LONGLONG:
137 case ATOMIC_TYPE_ULONGLONG:
139 case ATOMIC_TYPE_FLOAT:
141 case ATOMIC_TYPE_DOUBLE:
143 case ATOMIC_TYPE_LONG_DOUBLE:
145 case ATOMIC_TYPE_BOOL:
147 #ifdef PROVIDE_COMPLEX
148 case ATOMIC_TYPE_FLOAT_COMPLEX:
149 case ATOMIC_TYPE_DOUBLE_COMPLEX:
150 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
151 panic("complex lowering not implemented yet");
153 case ATOMIC_TYPE_FLOAT_IMAGINARY:
154 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
155 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
156 panic("imaginary lowering not implemented yet");
159 case ATOMIC_TYPE_VOID:
160 /* firm has no real void... */
162 case ATOMIC_TYPE_INVALID:
165 panic("Encountered unknown atomic type");
169 static unsigned get_type_size(type_t *type);
171 static unsigned get_atomic_type_size(const atomic_type_t *type)
173 switch(type->atype) {
174 case ATOMIC_TYPE_CHAR:
175 case ATOMIC_TYPE_SCHAR:
176 case ATOMIC_TYPE_UCHAR:
179 case ATOMIC_TYPE_SHORT:
180 case ATOMIC_TYPE_USHORT:
183 case ATOMIC_TYPE_BOOL:
184 case ATOMIC_TYPE_INT:
185 case ATOMIC_TYPE_UINT:
186 case ATOMIC_TYPE_LONG:
187 case ATOMIC_TYPE_ULONG:
188 case ATOMIC_TYPE_FLOAT:
191 case ATOMIC_TYPE_LONGLONG:
192 case ATOMIC_TYPE_ULONGLONG:
193 case ATOMIC_TYPE_DOUBLE:
196 case ATOMIC_TYPE_LONG_DOUBLE:
199 case ATOMIC_TYPE_VOID:
202 case ATOMIC_TYPE_INVALID:
205 panic("Trying to determine size of invalid atomic type");
208 static unsigned get_compound_type_size(compound_type_t *type)
210 ir_type *irtype = get_ir_type(&type->type);
211 return get_type_size_bytes(irtype);
214 static unsigned get_array_type_size(array_type_t *type)
216 ir_type *irtype = get_ir_type(&type->type);
217 return get_type_size_bytes(irtype);
220 static unsigned get_type_size(type_t *type)
222 type = skip_typeref(type);
226 return get_atomic_type_size((const atomic_type_t*) type);
228 return get_mode_size_bytes(mode_Is);
229 case TYPE_COMPOUND_UNION:
230 case TYPE_COMPOUND_STRUCT:
231 return get_compound_type_size((compound_type_t*) type);
233 /* just a pointer to the function */
234 return get_mode_size_bytes(mode_P_code);
236 return get_mode_size_bytes(mode_P_data);
238 return get_array_type_size((array_type_t*) type);
245 panic("Trying to determine size of invalid type");
248 static unsigned count_parameters(const function_type_t *function_type)
252 function_parameter_t *parameter = function_type->parameters;
253 for ( ; parameter != NULL; parameter = parameter->next) {
263 static long fold_constant(const expression_t *expression);
265 static ir_type *create_atomic_type(const atomic_type_t *type)
267 ir_mode *mode = get_atomic_mode(type);
268 ident *id = get_mode_ident(mode);
269 ir_type *irtype = new_type_primitive(id, mode);
274 static ir_type *create_method_type(const function_type_t *function_type)
276 type_t *result_type = function_type->result_type;
278 ident *id = unique_ident("functiontype");
279 int n_parameters = count_parameters(function_type);
280 int n_results = result_type == type_void ? 0 : 1;
281 ir_type *irtype = new_type_method(id, n_parameters, n_results);
283 if(result_type != type_void) {
284 ir_type *restype = get_ir_type(result_type);
285 set_method_res_type(irtype, 0, restype);
288 function_parameter_t *parameter = function_type->parameters;
290 for( ; parameter != NULL; parameter = parameter->next) {
291 ir_type *p_irtype = get_ir_type(parameter->type);
292 set_method_param_type(irtype, n, p_irtype);
296 if(function_type->variadic || function_type->unspecified_parameters) {
297 set_method_variadicity(irtype, variadicity_variadic);
303 static ir_type *create_pointer_type(pointer_type_t *type)
305 type_t *points_to = type->points_to;
306 ir_type *ir_points_to;
307 /* Avoid endless recursion if the points_to type contains this poiner type
308 * again (might be a struct). We therefore first create a void* pointer
309 * and then set the real points_to type
311 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
312 ir_type_void, mode_P_data);
313 type->type.firm_type = ir_type;
315 ir_points_to = get_ir_type(points_to);
316 set_pointer_points_to_type(ir_type, ir_points_to);
321 static ir_type *create_array_type(array_type_t *type)
323 type_t *element_type = type->element_type;
324 ir_type *ir_element_type = get_ir_type(element_type);
326 ident *id = unique_ident("array");
327 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
329 if(type->size != NULL) {
330 int n_elements = fold_constant(type->size);
332 set_array_bounds_int(ir_type, 0, 0, n_elements);
334 size_t elemsize = get_type_size_bytes(ir_element_type);
335 int align = get_type_alignment_bytes(ir_element_type);
336 if(elemsize % align > 0) {
337 elemsize += align - (elemsize % align);
339 set_type_size_bytes(ir_type, n_elements * elemsize);
340 set_type_alignment_bytes(ir_type, align);
341 set_type_state(ir_type, layout_fixed);
347 #define INVALID_TYPE ((ir_type_ptr)-1)
349 static ir_type *create_struct_type(compound_type_t *type)
351 symbol_t *symbol = type->declaration->symbol;
354 id = unique_ident(symbol->string);
356 id = unique_ident("__anonymous_struct");
358 ir_type *ir_type = new_type_struct(id);
360 type->type.firm_type = ir_type;
364 declaration_t *entry = type->declaration->context.declarations;
365 for( ; entry != NULL; entry = entry->next) {
366 if(entry->namespc != NAMESPACE_NORMAL)
369 ident *ident = new_id_from_str(entry->symbol->string);
370 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
372 int entry_size = get_type_size_bytes(entry_ir_type);
373 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
374 int misalign = offset % entry_alignment;
376 offset += entry_alignment - misalign;
378 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
379 set_entity_offset(entity, offset);
380 add_struct_member(ir_type, entity);
381 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
382 entry->v.entity = entity;
384 offset += entry_size;
385 if(entry_alignment > align_all) {
386 if(entry_alignment % align_all != 0) {
387 panic("Uneven alignments not supported yet");
389 align_all = entry_alignment;
393 int misalign = offset % align_all;
395 set_type_alignment_bytes(ir_type, align_all);
396 set_type_size_bytes(ir_type, offset);
397 set_type_state(ir_type, layout_fixed);
402 static ir_type *create_union_type(compound_type_t *type)
404 declaration_t *declaration = type->declaration;
405 symbol_t *symbol = declaration->symbol;
408 id = unique_ident(symbol->string);
410 id = unique_ident("__anonymous_union");
412 ir_type *ir_type = new_type_union(id);
414 type->type.firm_type = ir_type;
418 declaration_t *entry = declaration->context.declarations;
419 for( ; entry != NULL; entry = entry->next) {
420 if(entry->namespc != NAMESPACE_NORMAL)
423 ident *ident = new_id_from_str(entry->symbol->string);
424 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
426 int entry_size = get_type_size_bytes(entry_ir_type);
427 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
429 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
430 add_union_member(ir_type, entity);
431 set_entity_offset(entity, 0);
432 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
433 entry->v.entity = entity;
435 if(entry_size > size) {
438 if(entry_alignment > align_all) {
439 if(entry_alignment % align_all != 0) {
440 panic("Uneven alignments not supported yet");
442 align_all = entry_alignment;
446 set_type_alignment_bytes(ir_type, align_all);
447 set_type_size_bytes(ir_type, size);
448 set_type_state(ir_type, layout_fixed);
453 static ir_type *get_ir_type(type_t *type)
455 assert(type != NULL);
457 type = skip_typeref(type);
459 if(type->firm_type != NULL) {
460 assert(type->firm_type != INVALID_TYPE);
461 return type->firm_type;
464 ir_type *firm_type = NULL;
467 firm_type = create_atomic_type((atomic_type_t*) type);
470 firm_type = create_method_type((function_type_t*) type);
473 firm_type = create_pointer_type((pointer_type_t*) type);
476 firm_type = create_array_type((array_type_t*) type);
478 case TYPE_COMPOUND_STRUCT:
479 firm_type = create_struct_type((compound_type_t*) type);
481 case TYPE_COMPOUND_UNION:
482 firm_type = create_union_type((compound_type_t*) type);
485 firm_type = ir_type_int;
493 if(firm_type == NULL)
494 panic("unknown type found");
496 type->firm_type = firm_type;
500 static inline ir_mode *get_ir_mode(type_t *type)
502 ir_type *irtype = get_ir_type(type);
504 /* firm doesn't report a mode for arrays somehow... */
505 if(is_Array_type(irtype)) {
509 ir_mode *mode = get_type_mode(irtype);
510 assert(mode != NULL);
514 static ir_entity* get_function_entity(declaration_t *declaration)
516 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
517 return declaration->v.entity;
518 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
520 symbol_t *symbol = declaration->symbol;
521 ident *id = new_id_from_str(symbol->string);
523 ir_type *global_type = get_glob_type();
524 ir_type *ir_type_method = get_ir_type(declaration->type);
525 assert(is_Method_type(ir_type_method));
527 ir_entity *entity = new_entity(global_type, id, ir_type_method);
528 set_entity_ld_ident(entity, id);
529 if(declaration->storage_class == STORAGE_CLASS_STATIC
530 || declaration->is_inline) {
531 set_entity_visibility(entity, visibility_local);
532 } else if(declaration->init.statement != NULL) {
533 set_entity_visibility(entity, visibility_external_visible);
535 set_entity_visibility(entity, visibility_external_allocated);
538 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
539 declaration->v.entity = entity;
546 static ir_node *expression_to_firm(const expression_t *expression);
548 static dbg_info *get_dbg_info(const source_position_t *pos)
550 return (dbg_info*) pos;
553 static ir_node *const_to_firm(const const_t *cnst)
555 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
556 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
559 if(mode_is_float(mode)) {
560 tv = new_tarval_from_double(cnst->v.float_value, mode);
562 tv = new_tarval_from_long(cnst->v.int_value, mode);
565 return new_d_Const(dbgi, mode, tv);
568 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
570 assert(entity != NULL);
571 union symconst_symbol sym;
572 sym.entity_p = entity;
573 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
576 static ir_node *string_to_firm(const source_position_t *const src_pos,
577 const char *const id_prefix,
578 const char *const string)
580 ir_type *const global_type = get_glob_type();
581 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
584 ident *const id = unique_ident(id_prefix);
585 ir_entity *const entity = new_entity(global_type, id, type);
586 set_entity_ld_ident(entity, id);
587 set_entity_variability(entity, variability_constant);
589 ir_type *const elem_type = ir_type_const_char;
590 ir_mode *const mode = get_type_mode(elem_type);
592 const size_t slen = strlen(string) + 1;
594 set_array_lower_bound_int(type, 0, 0);
595 set_array_upper_bound_int(type, 0, slen);
596 set_type_size_bytes(type, slen);
597 set_type_state(type, layout_fixed);
599 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
600 for(size_t i = 0; i < slen; ++i) {
601 tvs[i] = new_tarval_from_long(string[i], mode);
604 set_array_entity_values(entity, tvs, slen);
607 dbg_info *const dbgi = get_dbg_info(src_pos);
609 return create_symconst(dbgi, entity);
612 static ir_node *string_literal_to_firm(const string_literal_t* literal)
614 return string_to_firm(&literal->expression.source_position, "Lstr",
618 static ir_node *deref_address(type_t *const type, ir_node *const addr,
619 dbg_info *const dbgi)
621 switch (type->type) {
623 case TYPE_COMPOUND_STRUCT:
624 case TYPE_COMPOUND_UNION:
628 ir_mode *const mode = get_ir_mode(type);
629 ir_node *const memory = get_store();
630 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
631 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
632 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
639 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
641 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
642 declaration_t *declaration = ref->declaration;
643 type_t *type = skip_typeref(declaration->type);
645 switch((declaration_type_t) declaration->declaration_type) {
646 case DECLARATION_TYPE_UNKNOWN:
648 case DECLARATION_TYPE_LOCAL_VARIABLE: {
649 ir_mode *mode = get_ir_mode(type);
650 return get_value(declaration->v.value_number, mode);
652 case DECLARATION_TYPE_FUNCTION: {
653 return create_symconst(dbgi, declaration->v.entity);
655 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
656 ir_entity *entity = declaration->v.entity;
657 ir_node *symconst = create_symconst(dbgi, entity);
658 return deref_address(type, symconst, dbgi);
660 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
661 ir_entity *entity = declaration->v.entity;
662 ir_node *frame = get_irg_frame(current_ir_graph);
663 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
664 return deref_address(type, sel, dbgi);
667 case DECLARATION_TYPE_COMPOUND_MEMBER:
668 case DECLARATION_TYPE_LABEL_BLOCK:
669 panic("not implemented reference type");
672 panic("reference to declaration with unknown type found");
675 static ir_node *reference_addr(const reference_expression_t *ref)
677 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
678 declaration_t *declaration = ref->declaration;
680 switch((declaration_type_t) declaration->declaration_type) {
681 case DECLARATION_TYPE_UNKNOWN:
683 case DECLARATION_TYPE_LOCAL_VARIABLE:
684 panic("local variable without entity has no address");
685 case DECLARATION_TYPE_FUNCTION: {
686 return create_symconst(dbgi, declaration->v.entity);
688 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
689 ir_entity *entity = declaration->v.entity;
690 ir_node *symconst = create_symconst(dbgi, entity);
693 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
694 ir_entity *entity = declaration->v.entity;
695 ir_node *frame = get_irg_frame(current_ir_graph);
696 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
700 case DECLARATION_TYPE_COMPOUND_MEMBER:
701 case DECLARATION_TYPE_LABEL_BLOCK:
702 panic("not implemented reference type");
705 panic("reference to declaration with unknown type found");
708 static ir_node *call_expression_to_firm(const call_expression_t *call)
710 assert(get_cur_block() != NULL);
712 expression_t *function = call->function;
713 ir_node *callee = expression_to_firm(function);
715 function_type_t *function_type;
716 if (function->datatype->type == TYPE_POINTER) {
717 pointer_type_t *const ptr_type = (pointer_type_t*)function->datatype;
718 assert(ptr_type->points_to->type == TYPE_FUNCTION);
719 function_type = (function_type_t*)ptr_type->points_to;
721 assert(function->datatype->type == TYPE_FUNCTION);
722 function_type = (function_type_t*)function->datatype;
725 int n_parameters = 0;
726 call_argument_t *argument = call->arguments;
727 for( ; argument != NULL; argument = argument->next) {
731 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
732 ir_type *new_method_type = NULL;
733 if(function_type->variadic || function_type->unspecified_parameters) {
734 /* we need to construct a new method type matching the call
736 int n_res = get_method_n_ress(ir_method_type);
737 new_method_type = new_type_method(unique_ident("calltype"),
738 n_parameters, n_res);
739 set_method_calling_convention(new_method_type,
740 get_method_calling_convention(ir_method_type));
741 set_method_additional_properties(new_method_type,
742 get_method_additional_properties(ir_method_type));
744 for(int i = 0; i < n_res; ++i) {
745 set_method_res_type(new_method_type, i,
746 get_method_res_type(ir_method_type, i));
749 ir_node *in[n_parameters];
751 argument = call->arguments;
753 for( ; argument != NULL; argument = argument->next) {
754 expression_t *expression = argument->expression;
755 ir_node *arg_node = expression_to_firm(expression);
758 if(new_method_type != NULL) {
759 ir_type *irtype = get_ir_type(expression->datatype);
760 set_method_param_type(new_method_type, n, irtype);
765 assert(n == n_parameters);
767 if(new_method_type != NULL)
768 ir_method_type = new_method_type;
770 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
771 ir_node *store = get_store();
772 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
774 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
777 type_t *result_type = function_type->result_type;
778 ir_node *result = NULL;
779 if(result_type != type_void) {
780 ir_mode *mode = get_ir_mode(result_type);
781 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
782 result = new_d_Proj(dbgi, resproj, mode, 0);
788 static ir_node *expression_to_addr(const expression_t *expression);
789 static void create_condition_evaluation(const expression_t *expression,
791 ir_node *false_block);
793 static void set_value_for_expression(const expression_t *expression,
796 if(expression->type == EXPR_REFERENCE) {
797 reference_expression_t *ref = (reference_expression_t*) expression;
799 declaration_t *declaration = ref->declaration;
800 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
801 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
802 set_value(declaration->v.value_number, value);
807 dbg_info *dbgi = get_dbg_info(&expression->source_position);
808 ir_node *addr = expression_to_addr(expression);
809 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
810 ir_node *memory = get_store();
811 ir_node *store = new_d_Store(dbgi, memory, addr, value);
812 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
813 set_store(store_mem);
816 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
818 ir_mode *value_mode = get_irn_mode(value);
820 if (value_mode == dest_mode || is_Bad(value))
823 if(dest_mode == mode_b) {
824 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
825 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
826 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
830 return new_d_Conv(dbgi, value, dest_mode);
833 static ir_node *create_incdec(const unary_expression_t *expression)
835 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
836 type_t *type = expression->expression.datatype;
837 ir_mode *mode = get_ir_mode(type);
838 expression_t *value = expression->value;
840 ir_node *value_node = expression_to_firm(value);
843 if(type->type == TYPE_POINTER) {
844 pointer_type_t *pointer_type = (pointer_type_t*) type;
845 unsigned elem_size = get_type_size(pointer_type->points_to);
846 offset = new_Const_long(mode_Is, elem_size);
848 assert(is_type_arithmetic(type));
849 offset = new_Const(mode, get_mode_one(mode));
853 switch(expression->type) {
854 case UNEXPR_POSTFIX_INCREMENT: {
855 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
856 set_value_for_expression(value, new_value);
859 case UNEXPR_POSTFIX_DECREMENT: {
860 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
861 set_value_for_expression(value, new_value);
864 case UNEXPR_PREFIX_INCREMENT: {
865 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
866 set_value_for_expression(value, new_value);
869 case UNEXPR_PREFIX_DECREMENT: {
870 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
871 set_value_for_expression(value, new_value);
875 panic("no incdec expr in create_incdec");
881 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
883 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
884 type_t *type = expression->expression.datatype;
886 if(expression->type == UNEXPR_TAKE_ADDRESS)
887 return expression_to_addr(expression->value);
889 const expression_t *value = expression->value;
890 ir_node *value_node = expression_to_firm(value);
892 switch(expression->type) {
894 return new_d_Minus(dbgi, value_node, get_ir_mode(type));
897 case UNEXPR_BITWISE_NEGATE:
898 return new_d_Not(dbgi, value_node, get_ir_mode(type));
900 if(get_irn_mode(value_node) != mode_b) {
901 value_node = create_conv(dbgi, value_node, mode_b);
903 value_node = new_d_Not(dbgi, value_node, mode_b);
904 ir_mode *const mode = get_ir_mode(type);
906 value_node = create_conv(dbgi, value_node, mode);
910 case UNEXPR_DEREFERENCE:
911 return deref_address(type, value_node, dbgi);
912 case UNEXPR_POSTFIX_INCREMENT:
913 case UNEXPR_POSTFIX_DECREMENT:
914 case UNEXPR_PREFIX_INCREMENT:
915 case UNEXPR_PREFIX_DECREMENT:
916 return create_incdec(expression);
918 return create_conv(dbgi, value_node, get_ir_mode(type));
920 case UNEXPR_TAKE_ADDRESS:
924 panic("invalid UNEXPR type found");
927 static long get_pnc(binary_expression_type_t type)
930 case BINEXPR_EQUAL: return pn_Cmp_Eq;
931 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
932 case BINEXPR_LESS: return pn_Cmp_Lt;
933 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
934 case BINEXPR_GREATER: return pn_Cmp_Gt;
935 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
939 panic("trying to get pn_Cmp from non-comparison binexpr type");
942 static ir_node *create_lazy_op(const binary_expression_t *expression)
944 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
945 type_t *type = expression->expression.datatype;
946 ir_mode *mode = get_ir_mode(type);
948 ir_node *cur_block = get_cur_block();
950 ir_node *one_block = new_immBlock();
951 ir_node *one = new_Const(mode, get_mode_one(mode));
952 ir_node *jmp_one = new_d_Jmp(dbgi);
954 ir_node *zero_block = new_immBlock();
955 ir_node *zero = new_Const(mode, get_mode_null(mode));
956 ir_node *jmp_zero = new_d_Jmp(dbgi);
958 set_cur_block(cur_block);
959 create_condition_evaluation((const expression_t*) expression,
960 one_block, zero_block);
961 mature_immBlock(one_block);
962 mature_immBlock(zero_block);
964 ir_node *common_block = new_immBlock();
965 add_immBlock_pred(common_block, jmp_one);
966 add_immBlock_pred(common_block, jmp_zero);
967 mature_immBlock(common_block);
969 ir_node *in[2] = { one, zero };
970 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
975 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
976 ir_node *right, ir_mode *mode);
978 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
979 create_arithmetic_func func)
981 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
982 ir_node *left = expression_to_firm(expression->left);
983 ir_node *right = expression_to_firm(expression->right);
984 type_t *type = expression->right->datatype;
985 /* be careful with the modes, because in arithmetic assign nodes only
986 * the right operand has the mode of the arithmetic already */
987 ir_mode *mode = get_ir_mode(type);
988 left = create_conv(dbgi, left, mode);
989 ir_node *res = func(dbgi, left, right, mode);
994 static ir_node *pointer_arithmetic(ir_node *const pointer,
997 dbg_info *const dbgi,
998 const create_arithmetic_func func)
1000 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1001 type_t *const points_to = pointer_type->points_to;
1002 const unsigned elem_size = get_type_size(points_to);
1004 assert(elem_size >= 1);
1005 if (elem_size > 1) {
1006 integer = create_conv(dbgi, integer, mode_Is);
1007 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1008 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1012 ir_mode *const mode = get_ir_mode(type);
1013 return func(dbgi, pointer, integer, mode);
1016 static ir_node *create_arithmetic_assign_binop(
1017 const binary_expression_t *expression, create_arithmetic_func func)
1019 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1020 type_t *const type = expression->expression.datatype;
1023 if (type->type == TYPE_POINTER) {
1024 ir_node *const pointer = expression_to_firm(expression->left);
1025 ir_node * integer = expression_to_firm(expression->right);
1026 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1028 value = create_arithmetic_binop(expression, func);
1031 ir_mode *const mode = get_ir_mode(type);
1032 value = create_conv(dbgi, value, mode);
1033 set_value_for_expression(expression->left, value);
1038 static ir_node *create_add(const binary_expression_t *expression)
1040 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1041 ir_node *left = expression_to_firm(expression->left);
1042 ir_node *right = expression_to_firm(expression->right);
1043 type_t *type = expression->expression.datatype;
1045 expression_t *expr_left = expression->left;
1046 expression_t *expr_right = expression->right;
1047 type_t *type_left = skip_typeref(expr_left->datatype);
1048 type_t *type_right = skip_typeref(expr_right->datatype);
1050 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1051 ir_mode *const mode = get_ir_mode(type);
1052 return new_d_Add(dbgi, left, right, mode);
1055 if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1056 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1058 assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY);
1059 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1063 static ir_node *create_sub(const binary_expression_t *expression)
1065 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1066 expression_t *const expr_left = expression->left;
1067 expression_t *const expr_right = expression->right;
1068 ir_node *const left = expression_to_firm(expr_left);
1069 ir_node *const right = expression_to_firm(expr_right);
1070 type_t *const type = expression->expression.datatype;
1071 type_t *const type_left = skip_typeref(expr_left->datatype);
1072 type_t *const type_right = skip_typeref(expr_right->datatype);
1074 if ((is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) ||
1075 (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER)) {
1076 ir_mode *const mode = get_ir_mode(type);
1077 return new_d_Sub(dbgi, left, right, mode);
1080 assert(type_left->type == TYPE_POINTER);
1081 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1084 static ir_node *create_shift(const binary_expression_t *expression)
1086 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1087 ir_node *left = expression_to_firm(expression->left);
1088 ir_node *right = expression_to_firm(expression->right);
1089 type_t *type = expression->expression.datatype;
1090 ir_mode *mode = get_ir_mode(type);
1092 /* firm always wants the shift count to be unsigned */
1093 right = create_conv(dbgi, right, mode_Iu);
1097 switch(expression->type) {
1098 case BINEXPR_SHIFTLEFT:
1099 res = new_d_Shl(dbgi, left, right, mode);
1101 case BINEXPR_SHIFTRIGHT: {
1102 expression_t *expr_left = expression->left;
1103 type_t *type_left = skip_typeref(expr_left->datatype);
1105 if(is_type_signed(type_left)) {
1106 res = new_d_Shrs(dbgi, left, right, mode);
1108 res = new_d_Shr(dbgi, left, right, mode);
1113 panic("create shift op called for non-shift op");
1120 static ir_node *create_divmod(const binary_expression_t *expression)
1122 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1123 ir_node *left = expression_to_firm(expression->left);
1124 ir_node *right = expression_to_firm(expression->right);
1125 ir_node *pin = new_Pin(new_NoMem());
1126 type_t *type = expression->expression.datatype;
1127 ir_mode *mode = get_ir_mode(type);
1131 switch (expression->type) {
1133 case BINEXPR_DIV_ASSIGN:
1134 if(mode_is_float(mode)) {
1135 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1136 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1138 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1139 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1144 case BINEXPR_MOD_ASSIGN:
1145 assert(!mode_is_float(mode));
1146 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1147 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1150 default: panic("unexpected binary expression type in create_divmod()");
1156 static ir_node *create_arithmetic_assign_divmod(
1157 const binary_expression_t *expression)
1159 ir_node * value = create_divmod(expression);
1160 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1161 type_t *const type = expression->expression.datatype;
1162 ir_mode *const mode = get_ir_mode(type);
1164 assert(type->type != TYPE_POINTER);
1166 value = create_conv(dbgi, value, mode);
1167 set_value_for_expression(expression->left, value);
1173 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1175 binary_expression_type_t type = expression->type;
1178 case BINEXPR_NOTEQUAL:
1180 case BINEXPR_LESSEQUAL:
1181 case BINEXPR_GREATER:
1182 case BINEXPR_GREATEREQUAL: {
1183 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1184 ir_node *left = expression_to_firm(expression->left);
1185 ir_node *right = expression_to_firm(expression->right);
1186 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1187 long pnc = get_pnc(type);
1188 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1191 case BINEXPR_ASSIGN: {
1192 ir_node *right = expression_to_firm(expression->right);
1193 set_value_for_expression(expression->left, right);
1197 return create_add(expression);
1199 return create_sub(expression);
1201 return create_arithmetic_binop(expression, new_d_Mul);
1202 case BINEXPR_BITWISE_AND:
1203 return create_arithmetic_binop(expression, new_d_And);
1204 case BINEXPR_BITWISE_OR:
1205 return create_arithmetic_binop(expression, new_d_Or);
1206 case BINEXPR_BITWISE_XOR:
1207 return create_arithmetic_binop(expression, new_d_Eor);
1208 case BINEXPR_SHIFTLEFT:
1209 case BINEXPR_SHIFTRIGHT:
1210 return create_shift(expression);
1213 return create_divmod(expression);
1214 case BINEXPR_LOGICAL_AND:
1215 case BINEXPR_LOGICAL_OR:
1216 return create_lazy_op(expression);
1218 expression_to_firm(expression->left);
1219 return expression_to_firm(expression->right);
1220 case BINEXPR_ADD_ASSIGN:
1221 return create_arithmetic_assign_binop(expression, new_d_Add);
1222 case BINEXPR_SUB_ASSIGN:
1223 return create_arithmetic_assign_binop(expression, new_d_Sub);
1224 case BINEXPR_MUL_ASSIGN:
1225 return create_arithmetic_assign_binop(expression, new_d_Mul);
1226 case BINEXPR_DIV_ASSIGN:
1227 return create_arithmetic_assign_divmod(expression);
1228 case BINEXPR_BITWISE_AND_ASSIGN:
1229 return create_arithmetic_assign_binop(expression, new_d_And);
1230 case BINEXPR_BITWISE_OR_ASSIGN:
1231 return create_arithmetic_assign_binop(expression, new_d_Or);
1232 case BINEXPR_BITWISE_XOR_ASSIGN:
1233 return create_arithmetic_assign_binop(expression, new_d_Eor);
1234 case BINEXPR_SHIFTLEFT_ASSIGN:
1235 return create_arithmetic_assign_binop(expression, new_d_Shl);
1236 case BINEXPR_SHIFTRIGHT_ASSIGN:
1237 return create_arithmetic_assign_binop(expression, new_d_Shr);
1239 panic("TODO binexpr type");
1243 static ir_node *array_access_addr(const array_access_expression_t *expression)
1245 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1247 ir_node *base_addr = expression_to_firm(expression->array_ref);
1248 ir_node *offset = expression_to_firm(expression->index);
1249 offset = create_conv(dbgi, offset, mode_Iu);
1251 unsigned elem_size = get_type_size(expression->expression.datatype);
1252 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1253 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1255 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1260 static ir_node *array_access_to_firm(
1261 const array_access_expression_t *expression)
1263 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1264 ir_node *addr = array_access_addr(expression);
1265 type_t *type = skip_typeref(expression->expression.datatype);
1266 return deref_address(type, addr, dbgi);
1269 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1271 type_t *type = expression->type;
1273 type = expression->size_expression->datatype;
1274 assert(type != NULL);
1277 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1278 unsigned size = get_type_size(type);
1279 ir_node *size_node = new_Const_long(mode, size);
1284 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1286 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1288 ir_node *cur_block = get_cur_block();
1290 /* create the true block */
1291 ir_node *true_block = new_immBlock();
1293 ir_node *true_val = expression_to_firm(expression->true_expression);
1294 ir_node *true_jmp = new_Jmp();
1296 /* create the false block */
1297 ir_node *false_block = new_immBlock();
1299 ir_node *false_val = expression_to_firm(expression->false_expression);
1300 ir_node *false_jmp = new_Jmp();
1302 /* create the condition evaluation */
1303 set_cur_block(cur_block);
1304 create_condition_evaluation(expression->condition, true_block, false_block);
1305 mature_immBlock(true_block);
1306 mature_immBlock(false_block);
1308 /* create the common block */
1309 ir_node *common_block = new_immBlock();
1310 add_immBlock_pred(common_block, true_jmp);
1311 add_immBlock_pred(common_block, false_jmp);
1312 mature_immBlock(common_block);
1314 /* TODO improve static semantics, so either both or no values are NULL */
1315 if (true_val == NULL || false_val == NULL) return NULL;
1317 ir_node *in[2] = { true_val, false_val };
1318 ir_mode *mode = get_irn_mode(true_val);
1319 assert(get_irn_mode(false_val) == mode);
1320 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1325 static ir_node *select_addr(const select_expression_t *expression)
1327 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1329 ir_node *compound_addr = expression_to_firm(expression->compound);
1331 declaration_t *entry = expression->compound_entry;
1332 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1333 ir_entity *entity = entry->v.entity;
1335 assert(entity != NULL);
1337 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1342 static ir_node *select_to_firm(const select_expression_t *expression)
1344 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1345 ir_node *addr = select_addr(expression);
1346 type_t *type = skip_typeref(expression->expression.datatype);
1347 return deref_address(type, addr, dbgi);
1350 /* Values returned by __builtin_classify_type. */
1351 typedef enum gcc_type_class
1357 enumeral_type_class,
1360 reference_type_class,
1364 function_type_class,
1375 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1377 const type_t *const type = expr->type_expression->datatype;
1383 const atomic_type_t *const atomic_type = (const atomic_type_t*)type;
1384 switch (atomic_type->atype) {
1385 // should not be reached
1386 case ATOMIC_TYPE_INVALID:
1390 // gcc cannot do that
1391 case ATOMIC_TYPE_VOID:
1392 tc = void_type_class;
1395 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1396 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1397 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1398 case ATOMIC_TYPE_SHORT:
1399 case ATOMIC_TYPE_USHORT:
1400 case ATOMIC_TYPE_INT:
1401 case ATOMIC_TYPE_UINT:
1402 case ATOMIC_TYPE_LONG:
1403 case ATOMIC_TYPE_ULONG:
1404 case ATOMIC_TYPE_LONGLONG:
1405 case ATOMIC_TYPE_ULONGLONG:
1406 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1407 tc = integer_type_class;
1410 case ATOMIC_TYPE_FLOAT:
1411 case ATOMIC_TYPE_DOUBLE:
1412 case ATOMIC_TYPE_LONG_DOUBLE:
1413 tc = real_type_class;
1416 #ifdef PROVIDE_COMPLEX
1417 case ATOMIC_TYPE_FLOAT_COMPLEX:
1418 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1419 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1420 tc = complex_type_class;
1424 #ifdef PROVIDE_IMAGINARY
1425 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1426 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1427 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1428 tc = complex_type_class;
1433 panic("Unimplemented case in classify_type_to_firm().");
1438 case TYPE_ARRAY: // gcc handles this as pointer
1439 case TYPE_FUNCTION: // gcc handles this as pointer
1440 case TYPE_POINTER: tc = pointer_type_class; break;
1441 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1442 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1444 // gcc handles this as integer
1445 case TYPE_ENUM: tc = integer_type_class; break;
1448 panic("Unimplemented case in classify_type_to_firm().");
1451 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1452 ir_mode *const mode = mode_Is;
1453 tarval *const tv = new_tarval_from_long(tc, mode);
1454 return new_d_Const(dbgi, mode, tv);
1457 static ir_node *function_name_to_firm(const string_literal_t *const expr)
1459 if (current_function_name == NULL) {
1460 const source_position_t *const src_pos =
1461 &expr->expression.source_position;
1462 const char *const name = current_function_decl->symbol->string;
1463 current_function_name = string_to_firm(src_pos, "__func__", name);
1466 return current_function_name;
1469 static ir_node *dereference_addr(const unary_expression_t *const expression)
1471 assert(expression->type == UNEXPR_DEREFERENCE);
1472 return expression_to_firm(expression->value);
1475 static ir_node *expression_to_addr(const expression_t *expression)
1477 switch(expression->type) {
1478 case EXPR_REFERENCE:
1479 return reference_addr((const reference_expression_t*) expression);
1480 case EXPR_ARRAY_ACCESS:
1481 return array_access_addr((const array_access_expression_t*) expression);
1483 return select_addr((const select_expression_t*) expression);
1485 const unary_expression_t *const unary_expr =
1486 (const unary_expression_t*)expression;
1487 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1488 return dereference_addr(unary_expr);
1495 panic("trying to get address of non-lvalue");
1498 static ir_node *_expression_to_firm(const expression_t *expression)
1500 switch(expression->type) {
1502 return const_to_firm((const const_t*) expression);
1503 case EXPR_STRING_LITERAL:
1504 return string_literal_to_firm((const string_literal_t*) expression);
1505 case EXPR_REFERENCE:
1506 return reference_expression_to_firm(
1507 (const reference_expression_t*) expression);
1509 return call_expression_to_firm((const call_expression_t*) expression);
1511 return unary_expression_to_firm((const unary_expression_t*) expression);
1513 return binary_expression_to_firm(
1514 (const binary_expression_t*) expression);
1515 case EXPR_ARRAY_ACCESS:
1516 return array_access_to_firm(
1517 (const array_access_expression_t*) expression);
1519 return sizeof_to_firm((const sizeof_expression_t*) expression);
1520 case EXPR_CONDITIONAL:
1521 return conditional_to_firm((const conditional_expression_t*)expression);
1523 return select_to_firm((const select_expression_t*) expression);
1524 case EXPR_CLASSIFY_TYPE:
1525 return classify_type_to_firm((const classify_type_expression_t*)expression);
1527 case EXPR_PRETTY_FUNCTION:
1528 return function_name_to_firm((const string_literal_t*)expression);
1531 case EXPR_STATEMENT:
1532 case EXPR_BUILTIN_SYMBOL:
1533 panic("unimplemented expression found");
1539 panic("invalid expression found");
1542 static ir_node *expression_to_firm(const expression_t *expression)
1544 ir_node *res = _expression_to_firm(expression);
1546 if(res != NULL && get_irn_mode(res) == mode_b) {
1547 ir_mode *mode = get_ir_mode(expression->datatype);
1548 res = create_conv(NULL, res, mode);
1554 static ir_node *expression_to_modeb(const expression_t *expression)
1556 ir_node *res = _expression_to_firm(expression);
1557 res = create_conv(NULL, res, mode_b);
1563 * create a short-circuit expression evaluation that tries to construct
1564 * efficient control flow structures for &&, || and ! expressions
1566 static void create_condition_evaluation(const expression_t *expression,
1567 ir_node *true_block,
1568 ir_node *false_block)
1570 switch(expression->type) {
1572 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1573 if(unary_expression->type == UNEXPR_NOT) {
1574 create_condition_evaluation(unary_expression->value, false_block,
1581 binary_expression_t *binary_expression
1582 = (binary_expression_t*) expression;
1583 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1584 ir_node *cur_block = get_cur_block();
1585 ir_node *extra_block = new_immBlock();
1586 set_cur_block(cur_block);
1587 create_condition_evaluation(binary_expression->left, extra_block,
1589 mature_immBlock(extra_block);
1590 set_cur_block(extra_block);
1591 create_condition_evaluation(binary_expression->right, true_block,
1595 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1596 ir_node *cur_block = get_cur_block();
1597 ir_node *extra_block = new_immBlock();
1598 set_cur_block(cur_block);
1599 create_condition_evaluation(binary_expression->left, true_block,
1601 mature_immBlock(extra_block);
1602 set_cur_block(extra_block);
1603 create_condition_evaluation(binary_expression->right, true_block,
1613 dbg_info *dbgi = get_dbg_info(&expression->source_position);
1614 ir_node *condition = expression_to_modeb(expression);
1615 ir_node *cond = new_d_Cond(dbgi, condition);
1616 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1617 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1619 add_immBlock_pred(true_block, true_proj);
1620 add_immBlock_pred(false_block, false_proj);
1622 set_cur_block(NULL);
1625 static void statement_to_firm(statement_t *statement);
1627 static void return_statement_to_firm(return_statement_t *statement)
1629 if(get_cur_block() == NULL)
1632 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1635 if(statement->return_value != NULL) {
1636 ir_node *retval = expression_to_firm(statement->return_value);
1640 ret = new_d_Return(dbgi, get_store(), 1, in);
1642 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1644 ir_node *end_block = get_irg_end_block(current_ir_graph);
1645 add_immBlock_pred(end_block, ret);
1647 set_cur_block(NULL);
1650 static void compound_statement_to_firm(compound_statement_t *compound)
1652 statement_t *statement = compound->statements;
1653 for( ; statement != NULL; statement = statement->next) {
1654 //context2firm(&statement->context);
1655 statement_to_firm(statement);
1659 static void expression_statement_to_firm(expression_statement_t *statement)
1661 if(get_cur_block() == NULL)
1664 expression_to_firm(statement->expression);
1667 static void if_statement_to_firm(if_statement_t *statement)
1669 ir_node *cur_block = get_cur_block();
1671 ir_node *fallthrough_block = new_immBlock();
1673 /* the true (blocks) */
1674 ir_node *true_block;
1675 if (statement->true_statement != NULL) {
1676 true_block = new_immBlock();
1677 statement_to_firm(statement->true_statement);
1678 if(get_cur_block() != NULL) {
1679 ir_node *jmp = new_Jmp();
1680 add_immBlock_pred(fallthrough_block, jmp);
1683 true_block = fallthrough_block;
1686 /* the false (blocks) */
1687 ir_node *false_block;
1688 if(statement->false_statement != NULL) {
1689 false_block = new_immBlock();
1691 statement_to_firm(statement->false_statement);
1692 if(get_cur_block() != NULL) {
1693 ir_node *jmp = new_Jmp();
1694 add_immBlock_pred(fallthrough_block, jmp);
1697 false_block = fallthrough_block;
1700 /* create the condition */
1701 if(cur_block != NULL) {
1702 set_cur_block(cur_block);
1703 create_condition_evaluation(statement->condition, true_block,
1707 mature_immBlock(true_block);
1708 if(false_block != fallthrough_block) {
1709 mature_immBlock(false_block);
1711 mature_immBlock(fallthrough_block);
1713 set_cur_block(fallthrough_block);
1716 static void while_statement_to_firm(while_statement_t *statement)
1718 ir_node *jmp = NULL;
1719 if(get_cur_block() != NULL) {
1723 /* create the header block */
1724 ir_node *header_block = new_immBlock();
1726 add_immBlock_pred(header_block, jmp);
1729 /* the false block */
1730 ir_node *false_block = new_immBlock();
1733 ir_node *body_block;
1734 if (statement->body != NULL) {
1735 ir_node *old_continue_label = continue_label;
1736 ir_node *old_break_label = break_label;
1737 continue_label = header_block;
1738 break_label = false_block;
1740 body_block = new_immBlock();
1741 statement_to_firm(statement->body);
1743 assert(continue_label == header_block);
1744 assert(break_label == false_block);
1745 continue_label = old_continue_label;
1746 break_label = old_break_label;
1748 if(get_cur_block() != NULL) {
1749 ir_node *jmp = new_Jmp();
1750 add_immBlock_pred(header_block, jmp);
1753 body_block = header_block;
1756 /* create the condition */
1757 set_cur_block(header_block);
1759 create_condition_evaluation(statement->condition, body_block, false_block);
1760 mature_immBlock(body_block);
1761 mature_immBlock(false_block);
1762 mature_immBlock(header_block);
1764 set_cur_block(false_block);
1767 static void do_while_statement_to_firm(do_while_statement_t *statement)
1769 ir_node *jmp = NULL;
1770 if(get_cur_block() != NULL) {
1774 /* create the header block */
1775 ir_node *header_block = new_immBlock();
1777 /* the false block */
1778 ir_node *false_block = new_immBlock();
1781 ir_node *body_block = new_immBlock();
1783 add_immBlock_pred(body_block, jmp);
1786 if (statement->body != NULL) {
1787 ir_node *old_continue_label = continue_label;
1788 ir_node *old_break_label = break_label;
1789 continue_label = header_block;
1790 break_label = false_block;
1792 statement_to_firm(statement->body);
1794 assert(continue_label == header_block);
1795 assert(break_label == false_block);
1796 continue_label = old_continue_label;
1797 break_label = old_break_label;
1799 if (get_cur_block() == NULL) {
1800 mature_immBlock(header_block);
1801 mature_immBlock(body_block);
1802 mature_immBlock(false_block);
1807 ir_node *body_jmp = new_Jmp();
1808 add_immBlock_pred(header_block, body_jmp);
1809 mature_immBlock(header_block);
1811 /* create the condition */
1812 set_cur_block(header_block);
1814 create_condition_evaluation(statement->condition, body_block, false_block);
1815 mature_immBlock(body_block);
1816 mature_immBlock(false_block);
1817 mature_immBlock(header_block);
1819 set_cur_block(false_block);
1822 static void for_statement_to_firm(for_statement_t *statement)
1824 ir_node *jmp = NULL;
1825 if (get_cur_block() != NULL) {
1826 if(statement->initialisation != NULL) {
1827 expression_to_firm(statement->initialisation);
1832 /* create the step block */
1833 ir_node *const step_block = new_immBlock();
1834 if (statement->step != NULL) {
1835 expression_to_firm(statement->step);
1837 ir_node *const step_jmp = new_Jmp();
1839 /* create the header block */
1840 ir_node *const header_block = new_immBlock();
1842 add_immBlock_pred(header_block, jmp);
1844 add_immBlock_pred(header_block, step_jmp);
1846 /* the false block */
1847 ir_node *const false_block = new_immBlock();
1850 ir_node * body_block;
1851 if (statement->body != NULL) {
1852 ir_node *const old_continue_label = continue_label;
1853 ir_node *const old_break_label = break_label;
1854 continue_label = step_block;
1855 break_label = false_block;
1857 body_block = new_immBlock();
1858 statement_to_firm(statement->body);
1860 assert(continue_label == step_block);
1861 assert(break_label == false_block);
1862 continue_label = old_continue_label;
1863 break_label = old_break_label;
1865 if (get_cur_block() != NULL) {
1866 ir_node *const jmp = new_Jmp();
1867 add_immBlock_pred(step_block, jmp);
1870 body_block = step_block;
1873 /* create the condition */
1874 set_cur_block(header_block);
1875 if (statement->condition != NULL) {
1876 create_condition_evaluation(statement->condition, body_block,
1879 keep_alive(header_block);
1880 ir_node *jmp = new_Jmp();
1881 add_immBlock_pred(body_block, jmp);
1884 mature_immBlock(body_block);
1885 mature_immBlock(false_block);
1886 mature_immBlock(step_block);
1887 mature_immBlock(header_block);
1888 mature_immBlock(false_block);
1890 set_cur_block(false_block);
1893 static void create_declaration_entity(declaration_t *declaration,
1894 declaration_type_t declaration_type,
1895 ir_type *parent_type)
1897 ident *id = new_id_from_str(declaration->symbol->string);
1898 ir_type *irtype = get_ir_type(declaration->type);
1899 ir_entity *entity = new_entity(parent_type, id, irtype);
1900 set_entity_ld_ident(entity, id);
1902 declaration->declaration_type = declaration_type;
1903 declaration->v.entity = entity;
1904 set_entity_variability(entity, variability_uninitialized);
1905 /* TODO: visibility? */
1908 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
1910 enum compound_graph_entry_type_t {
1911 COMPOUND_GRAPH_ENTRY_ARRAY,
1912 COMPOUND_GRAPH_ENTRY_COMPOUND
1915 struct compound_graph_path_entry_t {
1921 compound_graph_path_entry_t *prev;
1924 static void create_initializer_list(initializer_list_t *initializer,
1925 type_t *type, ir_entity *entity,
1926 compound_graph_path_entry_t *entry,
1929 static void create_initializer_value(initializer_value_t *initializer,
1931 compound_graph_path_entry_t *entry,
1934 ir_node *node = expression_to_firm(initializer->value);
1936 ir_type *type = get_entity_type(entity);
1937 compound_graph_path *path = new_compound_graph_path(type, len);
1940 for( ; entry != NULL; entry = entry->prev, --i) {
1942 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
1943 set_compound_graph_path_node(path, i, entry->v.entity);
1945 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
1946 set_compound_graph_path_array_index(path, i, entry->v.array_index);
1951 add_compound_ent_value_w_path(entity, node, path);
1954 static void create_initializer_compound(initializer_list_t *initializer,
1955 compound_type_t *type,
1957 compound_graph_path_entry_t *last_entry,
1960 declaration_t *compound_declaration = type->declaration;
1962 declaration_t *compound_entry = compound_declaration->context.declarations;
1964 compound_graph_path_entry_t entry;
1965 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
1966 entry.prev = last_entry;
1970 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
1971 if(compound_entry->symbol == NULL)
1973 if(compound_entry->namespc != NAMESPACE_NORMAL)
1976 if(i >= initializer->len)
1979 entry.v.entity = compound_entry->v.entity;
1981 initializer_t *sub_initializer = initializer->initializers[i];
1983 assert(compound_entry != NULL);
1984 assert(compound_entry->declaration_type
1985 == DECLARATION_TYPE_COMPOUND_MEMBER);
1987 if(sub_initializer->type == INITIALIZER_VALUE) {
1988 create_initializer_value((initializer_value_t*) sub_initializer,
1989 entity, &entry, len);
1991 assert(sub_initializer->type == INITIALIZER_LIST);
1992 create_initializer_list((initializer_list_t*) sub_initializer,
1993 compound_entry->type, entity, &entry, len);
2000 static void create_initializer_list(initializer_list_t *initializer,
2001 type_t *type, ir_entity *entity,
2002 compound_graph_path_entry_t *entry, int len)
2004 if(type->type == TYPE_ARRAY) {
2007 assert(type->type == TYPE_COMPOUND_STRUCT
2008 || type->type == TYPE_COMPOUND_UNION);
2009 create_initializer_compound(initializer, (compound_type_t*) type,
2010 entity, entry, len);
2014 static void create_initializer(declaration_t *declaration)
2016 initializer_t *initializer = declaration->init.initializer;
2017 if(initializer == NULL)
2020 if(initializer->type == INITIALIZER_VALUE) {
2021 initializer_value_t *initializer_value
2022 = (initializer_value_t*) initializer;
2023 ir_node *value = expression_to_firm(initializer_value->value);
2025 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2026 set_value(declaration->v.value_number, value);
2028 ir_entity *entity = declaration->v.entity;
2030 set_entity_variability(entity, variability_initialized);
2031 set_atomic_ent_value(entity, value);
2034 assert(initializer->type == INITIALIZER_LIST);
2035 initializer_list_t *list = (initializer_list_t*) initializer;
2037 declaration_type_t declaration_type = declaration->declaration_type;
2038 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2039 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2041 ir_entity *entity = declaration->v.entity;
2042 set_entity_variability(entity, variability_initialized);
2044 create_initializer_list(list, declaration->type, entity, NULL, 0);
2048 static void create_local_variable(declaration_t *declaration)
2050 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2052 bool needs_entity = declaration->address_taken;
2053 type_t *type = skip_typeref(declaration->type);
2055 if(type->type == TYPE_ARRAY
2056 || type->type == TYPE_COMPOUND_STRUCT
2057 || type->type == TYPE_COMPOUND_UNION) {
2058 needs_entity = true;
2062 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2063 create_declaration_entity(declaration,
2064 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2067 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2068 declaration->v.value_number = next_value_number_function;
2069 ++next_value_number_function;
2072 create_initializer(declaration);
2075 static void declaration_statement_to_firm(declaration_statement_t *statement)
2077 declaration_t *declaration = statement->declarations_begin;
2078 declaration_t *end = statement->declarations_end->next;
2079 for( ; declaration != end; declaration = declaration->next) {
2080 type_t *type = declaration->type;
2082 switch(declaration->storage_class) {
2083 case STORAGE_CLASS_TYPEDEF:
2085 case STORAGE_CLASS_STATIC:
2086 panic("static local vars not implemented yet");
2087 case STORAGE_CLASS_ENUM_ENTRY:
2088 panic("enum entry declaration in local block found");
2089 case STORAGE_CLASS_EXTERN:
2090 panic("extern declaration in local block found");
2091 case STORAGE_CLASS_NONE:
2092 case STORAGE_CLASS_AUTO:
2093 case STORAGE_CLASS_REGISTER:
2094 if(type->type == TYPE_FUNCTION) {
2095 panic("nested functions not supported yet");
2097 create_local_variable(declaration);
2101 panic("invalid storage class found");
2105 static void create_jump_statement(const statement_t *statement,
2106 ir_node *target_block)
2108 if(get_cur_block() == NULL)
2111 dbg_info *dbgi = get_dbg_info(&statement->source_position);
2112 ir_node *jump = new_d_Jmp(dbgi);
2113 add_immBlock_pred(target_block, jump);
2115 set_cur_block(NULL);
2118 static void switch_statement_to_firm(const switch_statement_t *statement)
2120 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2122 ir_node *expression = expression_to_firm(statement->expression);
2123 ir_node *cond = new_d_Cond(dbgi, expression);
2124 ir_node *break_block = new_immBlock();
2126 set_cur_block(NULL);
2128 ir_node *const old_switch_cond = current_switch_cond;
2129 ir_node *const old_break_label = break_label;
2130 const bool old_saw_default_label = saw_default_label;
2131 current_switch_cond = cond;
2132 break_label = break_block;
2134 statement_to_firm(statement->body);
2136 if(get_cur_block() != NULL) {
2137 ir_node *jmp = new_Jmp();
2138 add_immBlock_pred(break_block, jmp);
2141 if (!saw_default_label) {
2142 set_cur_block(get_nodes_block(cond));
2143 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2144 MAGIC_DEFAULT_PN_NUMBER);
2145 add_immBlock_pred(break_block, proj);
2148 assert(current_switch_cond == cond);
2149 assert(break_label == break_block);
2150 current_switch_cond = old_switch_cond;
2151 break_label = old_break_label;
2152 saw_default_label = old_saw_default_label;
2154 mature_immBlock(break_block);
2155 set_cur_block(break_block);
2158 static long fold_constant(const expression_t *expression)
2160 ir_graph *old_current_ir_graph = current_ir_graph;
2161 current_ir_graph = get_const_code_irg();
2163 ir_node *cnst = expression_to_firm(expression);
2164 if(!is_Const(cnst)) {
2165 panic("couldn't fold constantl");
2167 tarval *tv = get_Const_tarval(cnst);
2168 if(!tarval_is_long(tv)) {
2169 panic("folded constant not an integer");
2172 long res = get_tarval_long(tv);
2174 current_ir_graph = old_current_ir_graph;
2178 static void case_label_to_firm(const case_label_statement_t *statement)
2180 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2182 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2184 /* let's create a node and hope firm constant folding creates a Const
2187 set_cur_block(get_nodes_block(current_switch_cond));
2188 if(statement->expression) {
2189 long pn = fold_constant(statement->expression);
2190 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2191 /* oops someone detected our cheating... */
2192 panic("magic default pn used");
2194 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2196 saw_default_label = true;
2197 proj = new_d_defaultProj(dbgi, current_switch_cond,
2198 MAGIC_DEFAULT_PN_NUMBER);
2201 ir_node *block = new_immBlock();
2202 if (fallthrough != NULL) {
2203 add_immBlock_pred(block, fallthrough);
2205 add_immBlock_pred(block, proj);
2206 mature_immBlock(block);
2209 static ir_node *get_label_block(declaration_t *label)
2211 assert(label->namespc == NAMESPACE_LABEL);
2213 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2214 return label->v.block;
2216 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2218 ir_node *old_cur_block = get_cur_block();
2219 ir_node *block = new_immBlock();
2220 set_cur_block(old_cur_block);
2222 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2223 label->v.block = block;
2225 ARR_APP1(ir_node *, imature_blocks, block);
2230 static void label_to_firm(const label_statement_t *statement)
2232 ir_node *block = get_label_block(statement->label);
2234 if(get_cur_block() != NULL) {
2235 ir_node *jmp = new_Jmp();
2236 add_immBlock_pred(block, jmp);
2239 set_cur_block(block);
2242 statement_to_firm(statement->label_statement);
2245 static void goto_to_firm(const goto_statement_t *statement)
2247 if(get_cur_block() == NULL)
2250 ir_node *block = get_label_block(statement->label);
2251 ir_node *jmp = new_Jmp();
2252 add_immBlock_pred(block, jmp);
2254 set_cur_block(NULL);
2257 static void statement_to_firm(statement_t *statement)
2259 switch(statement->type) {
2260 case STATEMENT_COMPOUND:
2261 compound_statement_to_firm((compound_statement_t*) statement);
2263 case STATEMENT_RETURN:
2264 return_statement_to_firm((return_statement_t*) statement);
2266 case STATEMENT_EXPRESSION:
2267 expression_statement_to_firm((expression_statement_t*) statement);
2270 if_statement_to_firm((if_statement_t*) statement);
2272 case STATEMENT_WHILE:
2273 while_statement_to_firm((while_statement_t*) statement);
2275 case STATEMENT_DO_WHILE:
2276 do_while_statement_to_firm((do_while_statement_t*) statement);
2278 case STATEMENT_DECLARATION:
2279 declaration_statement_to_firm((declaration_statement_t*) statement);
2281 case STATEMENT_BREAK:
2282 create_jump_statement(statement, break_label);
2284 case STATEMENT_CONTINUE:
2285 create_jump_statement(statement, continue_label);
2287 case STATEMENT_SWITCH:
2288 switch_statement_to_firm((switch_statement_t*) statement);
2290 case STATEMENT_CASE_LABEL:
2291 case_label_to_firm((case_label_statement_t*) statement);
2294 for_statement_to_firm((for_statement_t*) statement);
2296 case STATEMENT_LABEL:
2297 label_to_firm((label_statement_t*) statement);
2299 case STATEMENT_GOTO:
2300 goto_to_firm((goto_statement_t*) statement);
2305 panic("Statement not implemented\n");
2308 static int count_local_declarations(const declaration_t * decl,
2309 const declaration_t *const end)
2312 for (; decl != end; decl = decl->next) {
2313 const type_t *type = skip_typeref(decl->type);
2314 switch (type->type) {
2318 if (!decl->address_taken) ++count;
2327 static int count_decls_in_stmts(const statement_t *stmt)
2330 for (; stmt != NULL; stmt = stmt->next) {
2331 switch (stmt->type) {
2332 case STATEMENT_DECLARATION: {
2333 const declaration_statement_t *const decl_stmt =
2334 (const declaration_statement_t*)stmt;
2335 count += count_local_declarations(decl_stmt->declarations_begin,
2336 decl_stmt->declarations_end->next);
2340 case STATEMENT_COMPOUND: {
2341 const compound_statement_t *const comp =
2342 (const compound_statement_t*)stmt;
2343 count += count_decls_in_stmts(comp->statements);
2347 case STATEMENT_IF: {
2348 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2349 count += count_decls_in_stmts(if_stmt->true_statement);
2350 count += count_decls_in_stmts(if_stmt->false_statement);
2354 case STATEMENT_SWITCH: {
2355 const switch_statement_t *const switch_stmt =
2356 (const switch_statement_t*)stmt;
2357 count += count_decls_in_stmts(switch_stmt->body);
2361 case STATEMENT_LABEL: {
2362 const label_statement_t *const label_stmt =
2363 (const label_statement_t*)stmt;
2364 count += count_decls_in_stmts(label_stmt->label_statement);
2368 case STATEMENT_WHILE: {
2369 const while_statement_t *const while_stmt =
2370 (const while_statement_t*)stmt;
2371 count += count_decls_in_stmts(while_stmt->body);
2375 case STATEMENT_DO_WHILE: {
2376 const do_while_statement_t *const do_while_stmt =
2377 (const do_while_statement_t*)stmt;
2378 count += count_decls_in_stmts(do_while_stmt->body);
2382 case STATEMENT_FOR: {
2383 const for_statement_t *const for_stmt =
2384 (const for_statement_t*)stmt;
2385 /* TODO initialisation */
2386 count += count_decls_in_stmts(for_stmt->body);
2390 case STATEMENT_BREAK:
2391 case STATEMENT_CASE_LABEL:
2392 case STATEMENT_CONTINUE:
2393 case STATEMENT_EXPRESSION:
2394 case STATEMENT_GOTO:
2395 case STATEMENT_INVALID:
2396 case STATEMENT_RETURN:
2403 static int get_function_n_local_vars(declaration_t *declaration)
2407 /* count parameters */
2408 count += count_local_declarations(declaration->context.declarations, NULL);
2410 /* count local variables declared in body */
2411 count += count_decls_in_stmts(declaration->init.statement);
2416 static void initialize_function_parameters(declaration_t *declaration)
2418 ir_graph *irg = current_ir_graph;
2419 ir_node *args = get_irg_args(irg);
2420 ir_node *start_block = get_irg_start_block(irg);
2423 declaration_t *parameter = declaration->context.declarations;
2424 for( ; parameter != NULL; parameter = parameter->next) {
2425 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2426 type_t *type = parameter->type;
2428 bool needs_entity = parameter->address_taken;
2429 if(type->type == TYPE_COMPOUND_STRUCT
2430 || type->type == TYPE_COMPOUND_UNION) {
2431 needs_entity = true;
2435 panic("entities for function parameters not implemented yet");
2438 ir_mode *mode = get_ir_mode(parameter->type);
2440 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2443 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2444 parameter->v.value_number = next_value_number_function;
2445 ++next_value_number_function;
2447 set_value(parameter->v.value_number, proj);
2451 static void create_function(declaration_t *declaration)
2453 ir_entity *entity = get_function_entity(declaration);
2455 if(declaration->init.statement == NULL)
2458 current_function_decl = declaration;
2459 current_function_name = NULL;
2461 assert(imature_blocks == NULL);
2462 imature_blocks = NEW_ARR_F(ir_node*, 0);
2464 int n_local_vars = get_function_n_local_vars(declaration);
2465 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2466 ir_node *first_block = get_cur_block();
2468 next_value_number_function = 0;
2469 initialize_function_parameters(declaration);
2471 statement_to_firm(declaration->init.statement);
2473 ir_node *end_block = get_irg_end_block(irg);
2475 /* do we have a return statement yet? */
2476 if(get_cur_block() != NULL) {
2477 assert(declaration->type->type == TYPE_FUNCTION);
2478 const function_type_t* const func_type
2479 = (const function_type_t*) declaration->type;
2481 if (func_type->result_type == type_void) {
2482 ret = new_Return(get_store(), 0, NULL);
2484 ir_mode *const mode = get_ir_mode(func_type->result_type);
2486 // ยง5.1.2.2.3 main implicitly returns 0
2487 if (strcmp(declaration->symbol->string, "main") == 0) {
2488 in[0] = new_Const(mode, get_mode_null(mode));
2490 in[0] = new_Unknown(mode);
2492 ret = new_Return(get_store(), 1, in);
2494 add_immBlock_pred(end_block, ret);
2497 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2498 mature_immBlock(imature_blocks[i]);
2500 DEL_ARR_F(imature_blocks);
2501 imature_blocks = NULL;
2503 mature_immBlock(first_block);
2504 mature_immBlock(end_block);
2506 irg_finalize_cons(irg);
2508 /* finalize the frame type */
2509 ir_type *frame_type = get_irg_frame_type(irg);
2510 int n = get_compound_n_members(frame_type);
2513 for(int i = 0; i < n; ++i) {
2514 ir_entity *entity = get_compound_member(frame_type, i);
2515 ir_type *entity_type = get_entity_type(entity);
2517 int align = get_type_alignment_bytes(entity_type);
2518 if(align > align_all)
2522 misalign = offset % align;
2524 offset += align - misalign;
2528 set_entity_offset(entity, offset);
2529 offset += get_type_size_bytes(entity_type);
2531 set_type_size_bytes(frame_type, offset);
2532 set_type_alignment_bytes(frame_type, align_all);
2533 set_type_state(frame_type, layout_fixed);
2538 static void create_global_variable(declaration_t *declaration)
2540 ir_type *global_type = get_glob_type();
2541 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2544 ir_entity *entity = declaration->v.entity;
2545 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2546 set_entity_visibility(entity, visibility_local);
2547 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2548 set_entity_visibility(entity, visibility_external_allocated);
2550 set_entity_visibility(entity, visibility_external_visible);
2552 current_ir_graph = get_const_code_irg();
2553 create_initializer(declaration);
2556 static void context_to_firm(context_t *context)
2558 declaration_t *declaration = context->declarations;
2559 for( ; declaration != NULL; declaration = declaration->next) {
2560 if(declaration->namespc != NAMESPACE_NORMAL)
2562 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2563 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2565 if(declaration->symbol == NULL)
2568 type_t *type = declaration->type;
2569 if(type->type == TYPE_FUNCTION) {
2570 create_function(declaration);
2572 create_global_variable(declaration);
2577 void translation_unit_to_firm(translation_unit_t *unit)
2579 /* just to be sure */
2580 continue_label = NULL;
2582 current_switch_cond = NULL;
2584 context_to_firm(& unit->context);