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 typedef enum declaration_type_t {
39 DECLARATION_TYPE_UNKNOWN,
40 DECLARATION_TYPE_FUNCTION,
41 DECLARATION_TYPE_GLOBAL_VARIABLE,
42 DECLARATION_TYPE_LOCAL_VARIABLE,
43 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
44 DECLARATION_TYPE_COMPOUND_MEMBER,
45 DECLARATION_TYPE_LABEL_BLOCK,
48 static ir_type *get_ir_type(type_t *type);
50 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
54 const declaration_t *declaration = & value_numbers[pos]->declaration;
56 print_warning_prefix(declaration->source_position);
57 fprintf(stderr, "variable '%s' might be used uninitialized\n",
58 declaration->symbol->string);
60 fprintf(stderr, "Some variable might be used uninitialized\n");
61 return new_r_Unknown(irg, mode);
64 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
66 const source_position_t *pos = (const source_position_t*) dbg;
69 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
73 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
75 const source_position_t *pos = (const source_position_t*) dbg;
80 return pos->input_name;
83 void init_ast2firm(void)
85 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
86 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
87 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
89 ir_type_int = get_ir_type(type_int);
90 ir_type_const_char = get_ir_type(type_const_char);
91 ir_type_void = get_ir_type(type_int); /* we don't have a real void
93 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
94 ir_type_void, mode_P_data);
96 type_void->firm_type = ir_type_void;
99 void exit_ast2firm(void)
103 static unsigned unique_id = 0;
105 static ident *unique_ident(const char *tag)
109 snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id);
111 return new_id_from_str(buf);
114 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
116 switch(atomic_type->atype) {
117 case ATOMIC_TYPE_SCHAR:
118 case ATOMIC_TYPE_CHAR:
120 case ATOMIC_TYPE_UCHAR:
122 case ATOMIC_TYPE_SHORT:
124 case ATOMIC_TYPE_USHORT:
126 case ATOMIC_TYPE_LONG:
127 case ATOMIC_TYPE_INT:
129 case ATOMIC_TYPE_ULONG:
130 case ATOMIC_TYPE_UINT:
132 case ATOMIC_TYPE_LONGLONG:
134 case ATOMIC_TYPE_ULONGLONG:
136 case ATOMIC_TYPE_FLOAT:
138 case ATOMIC_TYPE_DOUBLE:
140 case ATOMIC_TYPE_LONG_DOUBLE:
142 case ATOMIC_TYPE_BOOL:
144 #ifdef PROVIDE_COMPLEX
145 case ATOMIC_TYPE_FLOAT_COMPLEX:
146 case ATOMIC_TYPE_DOUBLE_COMPLEX:
147 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
148 panic("complex lowering not implemented yet");
150 case ATOMIC_TYPE_FLOAT_IMAGINARY:
151 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
152 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
153 panic("imaginary lowering not implemented yet");
156 case ATOMIC_TYPE_VOID:
157 /* firm has no real void... */
159 case ATOMIC_TYPE_INVALID:
162 panic("Encountered unknown atomic type");
166 static unsigned get_type_size(type_t *type);
168 static unsigned get_atomic_type_size(const atomic_type_t *type)
170 switch(type->atype) {
171 case ATOMIC_TYPE_CHAR:
172 case ATOMIC_TYPE_SCHAR:
173 case ATOMIC_TYPE_UCHAR:
176 case ATOMIC_TYPE_SHORT:
177 case ATOMIC_TYPE_USHORT:
180 case ATOMIC_TYPE_BOOL:
181 case ATOMIC_TYPE_INT:
182 case ATOMIC_TYPE_UINT:
183 case ATOMIC_TYPE_LONG:
184 case ATOMIC_TYPE_ULONG:
185 case ATOMIC_TYPE_FLOAT:
188 case ATOMIC_TYPE_LONGLONG:
189 case ATOMIC_TYPE_ULONGLONG:
190 case ATOMIC_TYPE_DOUBLE:
193 case ATOMIC_TYPE_LONG_DOUBLE:
196 case ATOMIC_TYPE_VOID:
199 case ATOMIC_TYPE_INVALID:
202 panic("Trying to determine size of invalid atomic type");
205 static unsigned get_compound_type_size(compound_type_t *type)
207 ir_type *irtype = get_ir_type(&type->type);
208 return get_type_size_bytes(irtype);
211 static unsigned get_array_type_size(array_type_t *type)
213 ir_type *irtype = get_ir_type(&type->type);
214 return get_type_size_bytes(irtype);
217 static unsigned get_type_size(type_t *type)
219 type = skip_typeref(type);
223 return get_atomic_type_size((const atomic_type_t*) type);
225 return get_mode_size_bytes(mode_Is);
226 case TYPE_COMPOUND_UNION:
227 case TYPE_COMPOUND_STRUCT:
228 return get_compound_type_size((compound_type_t*) type);
230 /* just a pointer to the function */
231 return get_mode_size_bytes(mode_P_code);
233 return get_mode_size_bytes(mode_P_data);
235 return get_array_type_size((array_type_t*) type);
242 panic("Trying to determine size of invalid type");
245 static unsigned count_parameters(const function_type_t *function_type)
249 function_parameter_t *parameter = function_type->parameters;
250 for ( ; parameter != NULL; parameter = parameter->next) {
260 static long fold_constant(const expression_t *expression);
262 static ir_type *create_atomic_type(const atomic_type_t *type)
264 ir_mode *mode = get_atomic_mode(type);
265 ident *id = get_mode_ident(mode);
266 ir_type *irtype = new_type_primitive(id, mode);
271 static ir_type *create_method_type(const function_type_t *function_type)
273 type_t *result_type = function_type->result_type;
275 ident *id = unique_ident("functiontype");
276 int n_parameters = count_parameters(function_type);
277 int n_results = result_type == type_void ? 0 : 1;
278 ir_type *irtype = new_type_method(id, n_parameters, n_results);
280 if(result_type != type_void) {
281 ir_type *restype = get_ir_type(result_type);
282 set_method_res_type(irtype, 0, restype);
285 function_parameter_t *parameter = function_type->parameters;
287 for( ; parameter != NULL; parameter = parameter->next) {
288 ir_type *p_irtype = get_ir_type(parameter->type);
289 set_method_param_type(irtype, n, p_irtype);
293 if(function_type->variadic || function_type->unspecified_parameters) {
294 set_method_variadicity(irtype, variadicity_variadic);
300 static ir_type *create_pointer_type(pointer_type_t *type)
302 type_t *points_to = type->points_to;
303 ir_type *ir_points_to;
304 /* Avoid endless recursion if the points_to type contains this poiner type
305 * again (might be a struct). We therefore first create a void* pointer
306 * and then set the real points_to type
308 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
309 ir_type_void, mode_P_data);
310 type->type.firm_type = ir_type;
312 ir_points_to = get_ir_type(points_to);
313 set_pointer_points_to_type(ir_type, ir_points_to);
318 static ir_type *create_array_type(array_type_t *type)
320 type_t *element_type = type->element_type;
321 ir_type *ir_element_type = get_ir_type(element_type);
323 ident *id = unique_ident("array");
324 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
326 if(type->size != NULL) {
327 int n_elements = fold_constant(type->size);
329 set_array_bounds_int(ir_type, 0, 0, n_elements);
331 size_t elemsize = get_type_size_bytes(ir_element_type);
332 int align = get_type_alignment_bytes(ir_element_type);
333 if(elemsize % align > 0) {
334 elemsize += align - (elemsize % align);
336 set_type_size_bytes(ir_type, n_elements * elemsize);
337 set_type_alignment_bytes(ir_type, align);
338 set_type_state(ir_type, layout_fixed);
344 #define INVALID_TYPE ((ir_type_ptr)-1)
346 static ir_type *create_struct_type(compound_type_t *type)
348 symbol_t *symbol = type->declaration->symbol;
351 id = unique_ident(symbol->string);
353 id = unique_ident("__anonymous_struct");
355 ir_type *ir_type = new_type_struct(id);
357 type->type.firm_type = ir_type;
361 declaration_t *entry = type->declaration->context.declarations;
362 for( ; entry != NULL; entry = entry->next) {
363 if(entry->namespace != NAMESPACE_NORMAL)
366 ident *ident = new_id_from_str(entry->symbol->string);
367 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
369 int entry_size = get_type_size_bytes(entry_ir_type);
370 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
371 int misalign = offset % entry_alignment;
374 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
375 set_entity_offset(entity, offset);
376 add_struct_member(ir_type, entity);
377 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
378 entry->v.entity = entity;
380 offset += entry_size;
381 if(entry_alignment > align_all) {
382 if(entry_alignment % align_all != 0) {
383 panic("Uneven alignments not supported yet");
385 align_all = entry_alignment;
389 int misalign = offset % align_all;
391 set_type_alignment_bytes(ir_type, align_all);
392 set_type_size_bytes(ir_type, offset);
393 set_type_state(ir_type, layout_fixed);
398 static ir_type *create_union_type(compound_type_t *type)
400 declaration_t *declaration = type->declaration;
401 symbol_t *symbol = declaration->symbol;
404 id = unique_ident(symbol->string);
406 id = unique_ident("__anonymous_union");
408 ir_type *ir_type = new_type_union(id);
410 type->type.firm_type = ir_type;
414 declaration_t *entry = declaration->context.declarations;
415 for( ; entry != NULL; entry = entry->next) {
416 if(entry->namespace != NAMESPACE_NORMAL)
419 ident *ident = new_id_from_str(entry->symbol->string);
420 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
422 int entry_size = get_type_size_bytes(entry_ir_type);
423 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
425 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
426 add_union_member(ir_type, entity);
427 set_entity_offset(entity, 0);
428 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
429 entry->v.entity = entity;
431 if(entry_size > size) {
434 if(entry_alignment > align_all) {
435 if(entry_alignment % align_all != 0) {
436 panic("Uneven alignments not supported yet");
438 align_all = entry_alignment;
442 set_type_alignment_bytes(ir_type, align_all);
443 set_type_size_bytes(ir_type, size);
444 set_type_state(ir_type, layout_fixed);
449 static ir_type *get_ir_type(type_t *type)
451 assert(type != NULL);
453 type = skip_typeref(type);
455 if(type->firm_type != NULL) {
456 assert(type->firm_type != INVALID_TYPE);
457 return type->firm_type;
460 ir_type *firm_type = NULL;
463 firm_type = create_atomic_type((atomic_type_t*) type);
466 firm_type = create_method_type((function_type_t*) type);
469 firm_type = create_pointer_type((pointer_type_t*) type);
472 firm_type = create_array_type((array_type_t*) type);
474 case TYPE_COMPOUND_STRUCT:
475 firm_type = create_struct_type((compound_type_t*) type);
477 case TYPE_COMPOUND_UNION:
478 firm_type = create_union_type((compound_type_t*) type);
481 firm_type = ir_type_int;
489 if(firm_type == NULL)
490 panic("unknown type found");
492 type->firm_type = firm_type;
496 static inline ir_mode *get_ir_mode(type_t *type)
498 ir_type *irtype = get_ir_type(type);
500 /* firm doesn't report a mode for arrays somehow... */
501 if(is_Array_type(irtype)) {
505 ir_mode *mode = get_type_mode(irtype);
506 assert(mode != NULL);
510 static ir_entity* get_function_entity(declaration_t *declaration)
512 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
513 return declaration->v.entity;
514 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
516 symbol_t *symbol = declaration->symbol;
517 ident *id = new_id_from_str(symbol->string);
519 ir_type *global_type = get_glob_type();
520 ir_type *ir_type_method = get_ir_type(declaration->type);
521 assert(is_Method_type(ir_type_method));
523 ir_entity *entity = new_entity(global_type, id, ir_type_method);
524 set_entity_ld_ident(entity, id);
525 if(declaration->storage_class == STORAGE_CLASS_STATIC
526 || declaration->is_inline) {
527 set_entity_visibility(entity, visibility_local);
528 } else if(declaration->init.statement != NULL) {
529 set_entity_visibility(entity, visibility_external_visible);
531 set_entity_visibility(entity, visibility_external_allocated);
534 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
535 declaration->v.entity = entity;
542 static ir_node *expression_to_firm(const expression_t *expression);
543 static ir_node *expression_to_modeb(const expression_t *expression);
545 static dbg_info *get_dbg_info(const source_position_t *pos)
547 return (dbg_info*) pos;
550 static ir_node *const_to_firm(const const_t *cnst)
552 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
553 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
556 if(mode_is_float(mode)) {
557 tv = new_tarval_from_double(cnst->v.float_value, mode);
559 tv = new_tarval_from_long(cnst->v.int_value, mode);
562 return new_d_Const(dbgi, mode, tv);
565 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
567 assert(entity != NULL);
568 union symconst_symbol sym;
569 sym.entity_p = entity;
570 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
573 static ir_node *string_literal_to_firm(const string_literal_t* literal)
575 ir_type *global_type = get_glob_type();
576 ir_type *type = new_type_array(unique_ident("strtype"), 1,
579 ident *id = unique_ident("Lstr");
580 ir_entity *entity = new_entity(global_type, id, type);
581 set_entity_ld_ident(entity, id);
582 set_entity_variability(entity, variability_constant);
584 ir_type *elem_type = ir_type_const_char;
585 ir_mode *mode = get_type_mode(elem_type);
587 const char *string = literal->value;
588 size_t slen = strlen(string) + 1;
590 set_array_lower_bound_int(type, 0, 0);
591 set_array_upper_bound_int(type, 0, slen);
592 set_type_size_bytes(type, slen);
593 set_type_state(type, layout_fixed);
595 tarval **tvs = xmalloc(slen * sizeof(tvs[0]));
596 for(size_t i = 0; i < slen; ++i) {
597 tvs[i] = new_tarval_from_long(string[i], mode);
600 set_array_entity_values(entity, tvs, slen);
603 dbg_info *dbgi = get_dbg_info(&literal->expression.source_position);
605 return create_symconst(dbgi, entity);
608 static ir_node *load_from_expression_addr(type_t *type, ir_node *addr,
611 ir_mode *mode = get_ir_mode(type);
612 ir_node *memory = get_store();
613 ir_node *load = new_d_Load(dbgi, memory, addr, mode);
614 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
615 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
621 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
623 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
624 declaration_t *declaration = ref->declaration;
625 type_t *type = skip_typeref(declaration->type);
627 switch((declaration_type_t) declaration->declaration_type) {
628 case DECLARATION_TYPE_UNKNOWN:
630 case DECLARATION_TYPE_LOCAL_VARIABLE: {
631 ir_mode *mode = get_ir_mode(type);
632 return get_value(declaration->v.value_number, mode);
634 case DECLARATION_TYPE_FUNCTION: {
635 return create_symconst(dbgi, declaration->v.entity);
637 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
638 ir_entity *entity = declaration->v.entity;
639 ir_node *symconst = create_symconst(dbgi, entity);
641 if(type->type == TYPE_ARRAY) {
644 return load_from_expression_addr(type, symconst, dbgi);
647 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
648 ir_entity *entity = declaration->v.entity;
649 ir_node *frame = get_irg_frame(current_ir_graph);
650 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
652 if(type->type == TYPE_ARRAY || type->type == TYPE_COMPOUND_STRUCT
653 || type->type == TYPE_COMPOUND_UNION) {
656 return load_from_expression_addr(type, sel, dbgi);
660 case DECLARATION_TYPE_COMPOUND_MEMBER:
661 case DECLARATION_TYPE_LABEL_BLOCK:
662 panic("not implemented reference type");
665 panic("reference to declaration with unknown type found");
668 static ir_node *reference_addr(const reference_expression_t *ref)
670 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
671 declaration_t *declaration = ref->declaration;
673 switch((declaration_type_t) declaration->declaration_type) {
674 case DECLARATION_TYPE_UNKNOWN:
676 case DECLARATION_TYPE_LOCAL_VARIABLE:
677 panic("local variable without entity has no address");
678 case DECLARATION_TYPE_FUNCTION: {
679 return create_symconst(dbgi, declaration->v.entity);
681 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
682 ir_entity *entity = declaration->v.entity;
683 ir_node *symconst = create_symconst(dbgi, entity);
686 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
687 ir_entity *entity = declaration->v.entity;
688 ir_node *frame = get_irg_frame(current_ir_graph);
689 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
693 case DECLARATION_TYPE_COMPOUND_MEMBER:
694 case DECLARATION_TYPE_LABEL_BLOCK:
695 panic("not implemented reference type");
698 panic("reference to declaration with unknown type found");
701 static ir_node *call_expression_to_firm(const call_expression_t *call)
703 assert(get_cur_block() != NULL);
705 expression_t *function = call->function;
706 ir_node *callee = expression_to_firm(function);
708 assert(function->datatype->type == TYPE_FUNCTION);
709 function_type_t *function_type = (function_type_t*) function->datatype;
711 int n_parameters = 0;
712 call_argument_t *argument = call->arguments;
713 for( ; argument != NULL; argument = argument->next) {
717 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
718 ir_type *new_method_type = NULL;
719 if(function_type->variadic || function_type->unspecified_parameters) {
720 /* we need to construct a new method type matching the call
722 int n_res = get_method_n_ress(ir_method_type);
723 new_method_type = new_type_method(unique_ident("calltype"),
724 n_parameters, n_res);
725 set_method_calling_convention(new_method_type,
726 get_method_calling_convention(ir_method_type));
727 set_method_additional_properties(new_method_type,
728 get_method_additional_properties(ir_method_type));
730 for(int i = 0; i < n_res; ++i) {
731 set_method_res_type(new_method_type, i,
732 get_method_res_type(ir_method_type, i));
735 ir_node *in[n_parameters];
737 argument = call->arguments;
739 for( ; argument != NULL; argument = argument->next) {
740 expression_t *expression = argument->expression;
741 ir_node *arg_node = expression_to_firm(expression);
744 if(new_method_type != NULL) {
745 ir_type *irtype = get_ir_type(expression->datatype);
746 set_method_param_type(new_method_type, n, irtype);
751 assert(n == n_parameters);
753 if(new_method_type != NULL)
754 ir_method_type = new_method_type;
756 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
757 ir_node *store = get_store();
758 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
760 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
763 type_t *result_type = function_type->result_type;
764 ir_node *result = NULL;
765 if(result_type != type_void) {
766 ir_mode *mode = get_ir_mode(result_type);
767 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
768 result = new_d_Proj(dbgi, resproj, mode, 0);
774 static ir_node *expression_to_addr(const expression_t *expression);
776 static void set_value_for_expression(const expression_t *expression,
779 if(expression->type == EXPR_REFERENCE) {
780 reference_expression_t *ref = (reference_expression_t*) expression;
782 declaration_t *declaration = ref->declaration;
783 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
784 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
785 set_value(declaration->v.value_number, value);
790 dbg_info *dbgi = get_dbg_info(&expression->source_position);
791 ir_node *addr = expression_to_addr(expression);
792 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
793 ir_node *memory = get_store();
794 ir_node *store = new_d_Store(dbgi, memory, addr, value);
795 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
796 set_store(store_mem);
799 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
801 ir_mode *value_mode = get_irn_mode(value);
803 if(value_mode == dest_mode)
806 if(dest_mode == mode_b) {
807 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
808 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
809 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
813 return new_d_Conv(dbgi, value, dest_mode);
816 static ir_node *create_incdec(const unary_expression_t *expression)
818 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
819 type_t *type = expression->expression.datatype;
820 ir_mode *mode = get_ir_mode(type);
821 expression_t *value = expression->value;
823 ir_node *value_node = expression_to_firm(value);
826 if(type->type == TYPE_POINTER) {
827 pointer_type_t *pointer_type = (pointer_type_t*) type;
828 unsigned elem_size = get_type_size(pointer_type->points_to);
829 offset = new_Const_long(mode_Is, elem_size);
831 assert(is_type_arithmetic(type));
832 offset = new_Const(mode, get_mode_one(mode));
836 switch(expression->type) {
837 case UNEXPR_POSTFIX_INCREMENT: {
838 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
839 set_value_for_expression(value, new_value);
842 case UNEXPR_POSTFIX_DECREMENT: {
843 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
844 set_value_for_expression(value, new_value);
847 case UNEXPR_PREFIX_INCREMENT: {
848 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
849 set_value_for_expression(value, new_value);
852 case UNEXPR_PREFIX_DECREMENT: {
853 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
854 set_value_for_expression(value, new_value);
858 panic("no incdec expr in create_incdec");
864 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
866 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
867 type_t *type = expression->expression.datatype;
868 ir_mode *mode = get_ir_mode(type);
870 if(expression->type == UNEXPR_TAKE_ADDRESS)
871 return expression_to_addr(expression->value);
873 const expression_t *value = expression->value;
874 ir_node *value_node = expression_to_firm(value);
876 switch(expression->type) {
878 return new_d_Minus(dbgi, value_node, mode);
881 case UNEXPR_BITWISE_NEGATE:
882 return new_d_Not(dbgi, value_node, mode);
884 if(get_irn_mode(value_node) != mode_b) {
885 value_node = create_conv(dbgi, value_node, mode_b);
887 value_node = new_d_Not(dbgi, value_node, mode_b);
889 value_node = create_conv(dbgi, value_node, mode);
892 case UNEXPR_DEREFERENCE:
893 return load_from_expression_addr(type, value_node, dbgi);
894 case UNEXPR_POSTFIX_INCREMENT:
895 case UNEXPR_POSTFIX_DECREMENT:
896 case UNEXPR_PREFIX_INCREMENT:
897 case UNEXPR_PREFIX_DECREMENT:
898 return create_incdec(expression);
900 return create_conv(dbgi, value_node, mode);
902 case UNEXPR_TAKE_ADDRESS:
906 panic("invalid UNEXPR type found");
909 static long get_pnc(binary_expression_type_t type)
912 case BINEXPR_EQUAL: return pn_Cmp_Eq;
913 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
914 case BINEXPR_LESS: return pn_Cmp_Lt;
915 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
916 case BINEXPR_GREATER: return pn_Cmp_Gt;
917 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
921 panic("trying to get pn_Cmp from non-comparison binexpr type");
924 static ir_node *create_lazy_op(const binary_expression_t *expression)
926 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
928 bool is_or = (expression->type == BINEXPR_LOGICAL_OR);
929 assert(is_or || expression->type == BINEXPR_LOGICAL_AND);
931 ir_node *val1 = expression_to_modeb(expression->left);
932 ir_node *cond = new_d_Cond(dbgi, val1);
933 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
934 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
936 ir_node *fallthrough_block = new_immBlock();
939 ir_node *calc_val2_block = new_immBlock();
941 add_immBlock_pred(calc_val2_block, false_proj);
943 add_immBlock_pred(calc_val2_block, true_proj);
946 mature_immBlock(calc_val2_block);
948 ir_node *val2 = expression_to_modeb(expression->right);
949 if(get_cur_block() != NULL) {
950 ir_node *jmp = new_d_Jmp(dbgi);
951 add_immBlock_pred(fallthrough_block, jmp);
957 constb = new_d_Const(dbgi, mode_b, get_tarval_b_true());
958 add_immBlock_pred(fallthrough_block, true_proj);
960 constb = new_d_Const(dbgi, mode_b, get_tarval_b_false());
961 add_immBlock_pred(fallthrough_block, false_proj);
963 mature_immBlock(fallthrough_block);
965 set_cur_block(fallthrough_block);
967 ir_node *in[2] = { val2, constb };
968 ir_node *val = new_d_Phi(dbgi, 2, in, mode_b);
973 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
974 ir_node *right, ir_mode *mode);
976 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
977 create_arithmetic_func func)
979 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
980 ir_node *left = expression_to_firm(expression->left);
981 ir_node *right = expression_to_firm(expression->right);
982 type_t *type = expression->right->datatype;
983 /* be careful with the modes, because in asithmetic assign nodes only
984 * the right operand has the mode of the arithmetic alread */
985 ir_mode *mode = get_ir_mode(type);
986 left = create_conv(dbgi, left, mode);
987 ir_node *res = func(dbgi, left, right, mode);
992 static ir_node *create_arithmetic_assign_binop(
993 const binary_expression_t *expression, create_arithmetic_func func)
995 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
996 ir_node *value = create_arithmetic_binop(expression, func);
997 type_t *type = expression->expression.datatype;
998 ir_mode *mode = get_ir_mode(type);
1000 assert(type->type != TYPE_POINTER);
1002 value = create_conv(dbgi, value, mode);
1003 set_value_for_expression(expression->left, value);
1008 static ir_node *create_add(const binary_expression_t *expression)
1010 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1011 ir_node *left = expression_to_firm(expression->left);
1012 ir_node *right = expression_to_firm(expression->right);
1013 type_t *type = expression->expression.datatype;
1014 ir_mode *mode = get_ir_mode(type);
1016 expression_t *expr_left = expression->left;
1017 expression_t *expr_right = expression->right;
1018 type_t *type_left = skip_typeref(expr_left->datatype);
1019 type_t *type_right = skip_typeref(expr_right->datatype);
1021 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1022 return new_d_Add(dbgi, left, right, mode);
1027 pointer_type_t *pointer_type;
1028 if(type_left->type == TYPE_POINTER) {
1031 pointer_type = (pointer_type_t*) type_left;
1033 assert(type_right->type == TYPE_POINTER);
1036 pointer_type = (pointer_type_t*) type_right;
1039 type_t *points_to = pointer_type->points_to;
1040 unsigned elem_size = get_type_size(points_to);
1042 assert(elem_size >= 1);
1044 integer = create_conv(dbgi, integer, mode_Is);
1045 ir_node *cnst = new_Const_long(mode_Is, (int) elem_size);
1046 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1050 ir_node *res = new_d_Add(dbgi, pointer, integer, mode);
1055 static ir_node *create_sub(const binary_expression_t *expression)
1057 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1058 ir_node *left = expression_to_firm(expression->left);
1059 ir_node *right = expression_to_firm(expression->right);
1060 type_t *type = expression->expression.datatype;
1061 ir_mode *mode = get_ir_mode(type);
1063 expression_t *expr_left = expression->left;
1064 expression_t *expr_right = expression->right;
1065 type_t *type_left = skip_typeref(expr_left->datatype);
1066 type_t *type_right = skip_typeref(expr_right->datatype);
1068 if((is_type_arithmetic(type_left) && is_type_arithmetic(type_right))
1069 || (type_left->type == TYPE_POINTER
1070 && type_right->type == TYPE_POINTER)) {
1071 return new_d_Sub(dbgi, left, right, mode);
1074 assert(type_right->type == TYPE_POINTER);
1075 ir_node *pointer = left;
1076 ir_node *integer = right;
1077 pointer_type_t *pointer_type = (pointer_type_t*) type_right;
1079 type_t *points_to = pointer_type->points_to;
1080 unsigned elem_size = get_type_size(points_to);
1082 assert(elem_size >= 1);
1084 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
1085 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
1089 ir_node *res = new_d_Sub(dbgi, pointer, integer, mode);
1094 static ir_node *create_shift(const binary_expression_t *expression)
1096 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1097 ir_node *left = expression_to_firm(expression->left);
1098 ir_node *right = expression_to_firm(expression->right);
1099 type_t *type = expression->expression.datatype;
1100 ir_mode *mode = get_ir_mode(type);
1102 /* firm always wants the shift count to be unsigned */
1103 right = create_conv(dbgi, right, mode_Iu);
1107 switch(expression->type) {
1108 case BINEXPR_SHIFTLEFT:
1109 res = new_d_Shl(dbgi, left, right, mode);
1111 case BINEXPR_SHIFTRIGHT: {
1112 expression_t *expr_left = expression->left;
1113 type_t *type_left = skip_typeref(expr_left->datatype);
1115 if(is_type_signed(type_left)) {
1116 res = new_d_Shrs(dbgi, left, right, mode);
1118 res = new_d_Shr(dbgi, left, right, mode);
1123 panic("create shift op called for non-shift op");
1130 static ir_node *create_divmod(const binary_expression_t *expression)
1132 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1133 ir_node *left = expression_to_firm(expression->left);
1134 ir_node *right = expression_to_firm(expression->right);
1135 ir_node *pin = new_Pin(new_NoMem());
1136 type_t *type = expression->expression.datatype;
1137 ir_mode *mode = get_ir_mode(type);
1141 switch (expression->type) {
1143 case BINEXPR_DIV_ASSIGN:
1144 if(mode_is_float(mode)) {
1145 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1146 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1148 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1149 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1154 case BINEXPR_MOD_ASSIGN:
1155 assert(!mode_is_float(mode));
1156 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1157 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1160 default: panic("unexpected binary expression type in create_divmod()");
1166 static ir_node *create_arithmetic_assign_divmod(
1167 const binary_expression_t *expression)
1169 ir_node * value = create_divmod(expression);
1170 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1171 type_t *const type = expression->expression.datatype;
1172 ir_mode *const mode = get_ir_mode(type);
1174 assert(type->type != TYPE_POINTER);
1176 value = create_conv(dbgi, value, mode);
1177 set_value_for_expression(expression->left, value);
1183 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1185 binary_expression_type_t type = expression->type;
1188 case BINEXPR_NOTEQUAL:
1190 case BINEXPR_LESSEQUAL:
1191 case BINEXPR_GREATER:
1192 case BINEXPR_GREATEREQUAL: {
1193 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1194 ir_node *left = expression_to_firm(expression->left);
1195 ir_node *right = expression_to_firm(expression->right);
1196 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1197 long pnc = get_pnc(type);
1198 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1201 case BINEXPR_ASSIGN: {
1202 ir_node *right = expression_to_firm(expression->right);
1203 set_value_for_expression(expression->left, right);
1207 return create_add(expression);
1209 return create_sub(expression);
1211 return create_arithmetic_binop(expression, new_d_Mul);
1212 case BINEXPR_BITWISE_AND:
1213 return create_arithmetic_binop(expression, new_d_And);
1214 case BINEXPR_BITWISE_OR:
1215 return create_arithmetic_binop(expression, new_d_Or);
1216 case BINEXPR_BITWISE_XOR:
1217 return create_arithmetic_binop(expression, new_d_Eor);
1218 case BINEXPR_SHIFTLEFT:
1219 case BINEXPR_SHIFTRIGHT:
1220 return create_shift(expression);
1223 return create_divmod(expression);
1224 case BINEXPR_LOGICAL_AND:
1225 case BINEXPR_LOGICAL_OR:
1226 return create_lazy_op(expression);
1228 expression_to_firm(expression->left);
1229 return expression_to_firm(expression->right);
1230 case BINEXPR_ADD_ASSIGN:
1231 return create_arithmetic_assign_binop(expression, new_d_Add);
1232 case BINEXPR_SUB_ASSIGN:
1233 return create_arithmetic_assign_binop(expression, new_d_Sub);
1234 case BINEXPR_MUL_ASSIGN:
1235 return create_arithmetic_assign_binop(expression, new_d_Mul);
1236 case BINEXPR_DIV_ASSIGN:
1237 return create_arithmetic_assign_divmod(expression);
1238 case BINEXPR_BITWISE_AND_ASSIGN:
1239 return create_arithmetic_assign_binop(expression, new_d_And);
1240 case BINEXPR_BITWISE_OR_ASSIGN:
1241 return create_arithmetic_assign_binop(expression, new_d_Or);
1242 case BINEXPR_BITWISE_XOR_ASSIGN:
1243 return create_arithmetic_assign_binop(expression, new_d_Eor);
1244 case BINEXPR_SHIFTLEFT_ASSIGN:
1245 return create_arithmetic_assign_binop(expression, new_d_Shl);
1246 case BINEXPR_SHIFTRIGHT_ASSIGN:
1247 return create_arithmetic_assign_binop(expression, new_d_Shr);
1249 panic("TODO binexpr type");
1253 static ir_node *array_access_addr(const array_access_expression_t *expression)
1255 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1257 ir_node *base_addr = expression_to_firm(expression->array_ref);
1258 ir_node *offset = expression_to_firm(expression->index);
1259 offset = create_conv(dbgi, offset, mode_Iu);
1261 unsigned elem_size = get_type_size(expression->expression.datatype);
1262 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1263 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1265 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1270 static ir_node *array_access_to_firm(
1271 const array_access_expression_t *expression)
1273 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1274 ir_node *addr = array_access_addr(expression);
1275 type_t *type = expression->expression.datatype;
1277 return load_from_expression_addr(type, addr, dbgi);
1280 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1282 type_t *type = expression->type;
1284 type = expression->size_expression->datatype;
1285 assert(type != NULL);
1288 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1289 unsigned size = get_type_size(type);
1290 ir_node *size_node = new_Const_long(mode, size);
1295 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1297 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1299 ir_node *condition = expression_to_modeb(expression->condition);
1300 ir_node *cond = new_d_Cond(dbgi, condition);
1301 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1302 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1304 /* create the true block */
1305 ir_node *true_block = new_immBlock();
1306 add_immBlock_pred(true_block, true_proj);
1307 mature_immBlock(true_block);
1309 ir_node *true_val = expression_to_firm(expression->true_expression);
1310 ir_node *true_jmp = new_Jmp();
1312 /* create the false block */
1313 ir_node *false_block = new_immBlock();
1314 add_immBlock_pred(false_block, false_proj);
1315 mature_immBlock(false_block);
1317 ir_node *false_val = expression_to_firm(expression->false_expression);
1318 ir_node *false_jmp = new_Jmp();
1320 /* create the common block */
1321 ir_node *common_block = new_immBlock();
1322 add_immBlock_pred(common_block, true_jmp);
1323 add_immBlock_pred(common_block, false_jmp);
1324 mature_immBlock(common_block);
1326 ir_node *in[2] = { true_val, false_val };
1327 ir_mode *mode = get_irn_mode(true_val);
1328 assert(get_irn_mode(false_val) == mode);
1329 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1334 static ir_node *select_addr(const select_expression_t *expression)
1336 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1338 ir_node *compound_addr = expression_to_firm(expression->compound);
1340 declaration_t *entry = expression->compound_entry;
1341 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1342 ir_entity *entity = entry->v.entity;
1344 assert(entity != NULL);
1346 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1351 static ir_node *select_to_firm(const select_expression_t *expression)
1353 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1354 ir_node *addr = select_addr(expression);
1355 type_t *type = expression->expression.datatype;
1357 return load_from_expression_addr(type, addr, dbgi);
1360 static ir_node *dereference_addr(const unary_expression_t *const expression)
1362 assert(expression->type == UNEXPR_DEREFERENCE);
1363 return expression_to_firm(expression->value);
1366 static ir_node *expression_to_addr(const expression_t *expression)
1368 switch(expression->type) {
1369 case EXPR_REFERENCE:
1370 return reference_addr((const reference_expression_t*) expression);
1371 case EXPR_ARRAY_ACCESS:
1372 return array_access_addr((const array_access_expression_t*) expression);
1374 return select_addr((const select_expression_t*) expression);
1376 const unary_expression_t *const unary_expr =
1377 (const unary_expression_t*)expression;
1378 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1379 return dereference_addr(unary_expr);
1386 panic("trying to get address of non-lvalue");
1389 static ir_node *_expression_to_firm(const expression_t *expression)
1391 switch(expression->type) {
1393 return const_to_firm((const const_t*) expression);
1394 case EXPR_STRING_LITERAL:
1395 return string_literal_to_firm((const string_literal_t*) expression);
1396 case EXPR_REFERENCE:
1397 return reference_expression_to_firm(
1398 (const reference_expression_t*) expression);
1400 return call_expression_to_firm((const call_expression_t*) expression);
1402 return unary_expression_to_firm((const unary_expression_t*) expression);
1404 return binary_expression_to_firm(
1405 (const binary_expression_t*) expression);
1406 case EXPR_ARRAY_ACCESS:
1407 return array_access_to_firm(
1408 (const array_access_expression_t*) expression);
1410 return sizeof_to_firm((const sizeof_expression_t*) expression);
1411 case EXPR_CONDITIONAL:
1412 return conditional_to_firm((const conditional_expression_t*)expression);
1414 return select_to_firm((const select_expression_t*) expression);
1417 case EXPR_PRETTY_FUNCTION:
1419 case EXPR_STATEMENT:
1420 case EXPR_BUILTIN_SYMBOL:
1421 panic("unimplemented expression found");
1427 panic("invalid expression found");
1430 static ir_node *expression_to_firm(const expression_t *expression)
1432 ir_node *res = _expression_to_firm(expression);
1434 if(res != NULL && get_irn_mode(res) == mode_b) {
1435 ir_mode *mode = get_ir_mode(expression->datatype);
1436 res = create_conv(NULL, res, mode);
1442 static ir_node *expression_to_modeb(const expression_t *expression)
1444 ir_node *res = _expression_to_firm(expression);
1445 res = create_conv(NULL, res, mode_b);
1450 static void statement_to_firm(statement_t *statement);
1452 static void return_statement_to_firm(return_statement_t *statement)
1454 if(get_cur_block() == NULL)
1457 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1460 if(statement->return_value != NULL) {
1461 ir_node *retval = expression_to_firm(statement->return_value);
1465 ret = new_d_Return(dbgi, get_store(), 1, in);
1467 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1469 ir_node *end_block = get_irg_end_block(current_ir_graph);
1470 add_immBlock_pred(end_block, ret);
1472 set_cur_block(NULL);
1475 static void compound_statement_to_firm(compound_statement_t *compound)
1477 statement_t *statement = compound->statements;
1478 for( ; statement != NULL; statement = statement->next) {
1479 //context2firm(&statement->context);
1480 statement_to_firm(statement);
1484 static void expression_statement_to_firm(expression_statement_t *statement)
1486 if(get_cur_block() == NULL)
1489 expression_to_firm(statement->expression);
1492 static void if_statement_to_firm(if_statement_t *statement)
1494 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1495 ir_node *condition = expression_to_modeb(statement->condition);
1497 /* make sure we have a mode_b condition */
1498 ir_node *cond = new_d_Cond(dbgi, condition);
1499 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1500 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1502 ir_node *fallthrough_block = new_immBlock();
1504 /* the true (blocks) */
1505 ir_node *true_block = new_immBlock();
1506 add_immBlock_pred(true_block, true_proj);
1507 mature_immBlock(true_block);
1509 statement_to_firm(statement->true_statement);
1510 if(get_cur_block() != NULL) {
1511 ir_node *jmp = new_Jmp();
1512 add_immBlock_pred(fallthrough_block, jmp);
1515 /* the false (blocks) */
1516 if(statement->false_statement != NULL) {
1517 ir_node *false_block = new_immBlock();
1518 add_immBlock_pred(false_block, false_proj);
1519 mature_immBlock(false_block);
1521 statement_to_firm(statement->false_statement);
1522 if(get_cur_block() != NULL) {
1523 ir_node *jmp = new_Jmp();
1524 add_immBlock_pred(fallthrough_block, jmp);
1527 add_immBlock_pred(fallthrough_block, false_proj);
1529 mature_immBlock(fallthrough_block);
1531 set_cur_block(fallthrough_block);
1534 static void while_statement_to_firm(while_statement_t *statement)
1536 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1538 ir_node *jmp = NULL;
1539 if(get_cur_block() != NULL) {
1543 /* create the header block */
1544 ir_node *header_block = new_immBlock();
1546 add_immBlock_pred(header_block, jmp);
1549 /* create the condition */
1550 ir_node *condition = expression_to_modeb(statement->condition);
1551 ir_node *cond = new_d_Cond(dbgi, condition);
1552 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1553 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1555 /* the false block */
1556 ir_node *false_block = new_immBlock();
1557 add_immBlock_pred(false_block, false_proj);
1560 ir_node *body_block = new_immBlock();
1561 add_immBlock_pred(body_block, true_proj);
1562 mature_immBlock(body_block);
1564 ir_node *old_continue_label = continue_label;
1565 ir_node *old_break_label = break_label;
1566 continue_label = header_block;
1567 break_label = false_block;
1569 statement_to_firm(statement->body);
1571 assert(continue_label == header_block);
1572 assert(break_label == false_block);
1573 continue_label = old_continue_label;
1574 break_label = old_break_label;
1576 if(get_cur_block() != NULL) {
1577 ir_node *jmp = new_Jmp();
1578 add_immBlock_pred(header_block, jmp);
1581 mature_immBlock(header_block);
1582 mature_immBlock(false_block);
1584 set_cur_block(false_block);
1587 static void do_while_statement_to_firm(do_while_statement_t *statement)
1589 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1591 ir_node *jmp = NULL;
1592 if(get_cur_block() != NULL) {
1596 /* create the header block */
1597 ir_node *header_block = new_immBlock();
1599 /* the false block */
1600 ir_node *false_block = new_immBlock();
1603 ir_node *body_block = new_immBlock();
1605 add_immBlock_pred(body_block, jmp);
1608 ir_node *old_continue_label = continue_label;
1609 ir_node *old_break_label = break_label;
1610 continue_label = header_block;
1611 break_label = false_block;
1613 statement_to_firm(statement->body);
1615 assert(continue_label == header_block);
1616 assert(break_label == false_block);
1617 continue_label = old_continue_label;
1618 break_label = old_break_label;
1620 if(get_cur_block() == NULL) {
1621 mature_immBlock(header_block);
1622 mature_immBlock(body_block);
1623 mature_immBlock(false_block);
1627 ir_node *body_jmp = new_Jmp();
1628 add_immBlock_pred(header_block, body_jmp);
1629 mature_immBlock(header_block);
1631 /* create the condition */
1632 set_cur_block(header_block);
1633 ir_node *condition = expression_to_modeb(statement->condition);
1634 ir_node *cond = new_d_Cond(dbgi, condition);
1635 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1636 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1638 add_immBlock_pred(body_block, true_proj);
1639 mature_immBlock(body_block);
1641 add_immBlock_pred(false_block, false_proj);
1642 mature_immBlock(false_block);
1644 set_cur_block(false_block);
1647 static void for_statement_to_firm(for_statement_t *statement)
1649 dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position);
1651 ir_node *jmp = NULL;
1652 if (get_cur_block() != NULL) {
1653 if(statement->initialisation != NULL) {
1654 expression_to_firm(statement->initialisation);
1659 /* create the step block */
1660 ir_node *const step_block = new_immBlock();
1661 if (statement->step != NULL) {
1662 expression_to_firm(statement->step);
1664 ir_node *const step_jmp = new_Jmp();
1666 /* create the header block */
1667 ir_node *const header_block = new_immBlock();
1669 add_immBlock_pred(header_block, jmp);
1671 add_immBlock_pred(header_block, step_jmp);
1673 /* create the condition */
1675 ir_node *false_proj;
1676 if (statement->condition != NULL) {
1677 ir_node *const condition = expression_to_modeb(statement->condition);
1678 ir_node *const cond = new_d_Cond(dbgi, condition);
1679 true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1680 false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1682 keep_alive(header_block);
1683 true_proj = new_Jmp();
1687 /* the false block */
1688 ir_node *const false_block = new_immBlock();
1689 if (false_proj != NULL) {
1690 add_immBlock_pred(false_block, false_proj);
1694 ir_node *const body_block = new_immBlock();
1695 add_immBlock_pred(body_block, true_proj);
1696 mature_immBlock(body_block);
1698 ir_node *const old_continue_label = continue_label;
1699 ir_node *const old_break_label = break_label;
1700 continue_label = step_block;
1701 break_label = false_block;
1703 statement_to_firm(statement->body);
1705 assert(continue_label == step_block);
1706 assert(break_label == false_block);
1707 continue_label = old_continue_label;
1708 break_label = old_break_label;
1710 if (get_cur_block() != NULL) {
1711 ir_node *const jmp = new_Jmp();
1712 add_immBlock_pred(step_block, jmp);
1715 mature_immBlock(step_block);
1716 mature_immBlock(header_block);
1717 mature_immBlock(false_block);
1719 set_cur_block(false_block);
1722 static void create_declaration_entity(declaration_t *declaration,
1723 declaration_type_t declaration_type,
1724 ir_type *parent_type)
1726 ident *id = new_id_from_str(declaration->symbol->string);
1727 ir_type *irtype = get_ir_type(declaration->type);
1728 ir_entity *entity = new_entity(parent_type, id, irtype);
1729 set_entity_ld_ident(entity, id);
1731 declaration->declaration_type = declaration_type;
1732 declaration->v.entity = entity;
1733 set_entity_variability(entity, variability_uninitialized);
1734 /* TODO: visibility? */
1737 static void create_initializer(declaration_t *declaration)
1739 initializer_t *initializer = declaration->init.initializer;
1740 if(initializer == NULL)
1743 if(initializer->type == INITIALIZER_VALUE) {
1744 assert(initializer->designator == NULL);
1745 assert(initializer->next == NULL);
1746 ir_node *init_node = expression_to_firm(initializer->v.value);
1748 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1749 set_value(declaration->v.value_number, init_node);
1751 ir_entity *entity = declaration->v.entity;
1753 set_entity_variability(entity, variability_initialized);
1754 set_atomic_ent_value(entity, init_node);
1757 assert(initializer->type == INITIALIZER_LIST);
1758 panic("list initializer not supported yet");
1762 static void create_local_variable(declaration_t *declaration)
1764 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
1766 bool needs_entity = declaration->address_taken;
1767 type_t *type = skip_typeref(declaration->type);
1769 if(type->type == TYPE_ARRAY
1770 || type->type == TYPE_COMPOUND_STRUCT
1771 || type->type == TYPE_COMPOUND_UNION) {
1772 needs_entity = true;
1776 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
1777 create_declaration_entity(declaration,
1778 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
1781 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1782 declaration->v.value_number = next_value_number_function;
1783 ++next_value_number_function;
1786 create_initializer(declaration);
1789 static void declaration_statement_to_firm(declaration_statement_t *statement)
1791 declaration_t *declaration = statement->declarations_begin;
1792 declaration_t *end = statement->declarations_end->next;
1793 for( ; declaration != end; declaration = declaration->next) {
1794 type_t *type = declaration->type;
1796 switch(declaration->storage_class) {
1797 case STORAGE_CLASS_TYPEDEF:
1799 case STORAGE_CLASS_STATIC:
1800 panic("static local vars not implemented yet");
1801 case STORAGE_CLASS_ENUM_ENTRY:
1802 panic("enum entry declaration in local block found");
1803 case STORAGE_CLASS_EXTERN:
1804 panic("extern declaration in local block found");
1805 case STORAGE_CLASS_NONE:
1806 case STORAGE_CLASS_AUTO:
1807 case STORAGE_CLASS_REGISTER:
1808 if(type->type == TYPE_FUNCTION) {
1809 panic("nested functions not supported yet");
1811 create_local_variable(declaration);
1815 panic("invalid storage class found");
1819 static void create_jump_statement(const statement_t *statement,
1820 ir_node *target_block)
1822 if(get_cur_block() == NULL)
1825 dbg_info *dbgi = get_dbg_info(&statement->source_position);
1826 ir_node *jump = new_d_Jmp(dbgi);
1827 add_immBlock_pred(target_block, jump);
1829 set_cur_block(NULL);
1832 static void switch_statement_to_firm(const switch_statement_t *statement)
1834 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1836 ir_node *expression = expression_to_firm(statement->expression);
1837 ir_node *cond = new_d_Cond(dbgi, expression);
1838 ir_node *break_block = new_immBlock();
1840 set_cur_block(NULL);
1842 ir_node *const old_switch_cond = current_switch_cond;
1843 ir_node *const old_break_label = break_label;
1844 const bool old_saw_default_label = saw_default_label;
1845 current_switch_cond = cond;
1846 break_label = break_block;
1848 statement_to_firm(statement->body);
1850 if(get_cur_block() != NULL) {
1851 ir_node *jmp = new_Jmp();
1852 add_immBlock_pred(break_block, jmp);
1855 if (!saw_default_label) {
1856 set_cur_block(get_nodes_block(cond));
1857 ir_node *const proj = new_d_defaultProj(dbgi, cond,
1858 MAGIC_DEFAULT_PN_NUMBER);
1859 add_immBlock_pred(break_block, proj);
1862 assert(current_switch_cond == cond);
1863 assert(break_label == break_block);
1864 current_switch_cond = old_switch_cond;
1865 break_label = old_break_label;
1866 saw_default_label = old_saw_default_label;
1868 mature_immBlock(break_block);
1869 set_cur_block(break_block);
1872 static long fold_constant(const expression_t *expression)
1874 ir_graph *old_current_ir_graph = current_ir_graph;
1875 current_ir_graph = get_const_code_irg();
1877 ir_node *cnst = expression_to_firm(expression);
1878 if(!is_Const(cnst)) {
1879 panic("couldn't fold constantl");
1881 tarval *tv = get_Const_tarval(cnst);
1882 if(!tarval_is_long(tv)) {
1883 panic("folded constant not an integer");
1886 long res = get_tarval_long(tv);
1888 current_ir_graph = old_current_ir_graph;
1892 static void case_label_to_firm(const case_label_statement_t *statement)
1894 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1896 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
1898 /* let's create a node and hope firm constant folding creates a Const
1901 set_cur_block(get_nodes_block(current_switch_cond));
1902 if(statement->expression) {
1903 long pn = fold_constant(statement->expression);
1904 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
1905 /* oops someone detected our cheating... */
1906 panic("magic default pn used");
1908 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
1910 saw_default_label = true;
1911 proj = new_d_defaultProj(dbgi, current_switch_cond,
1912 MAGIC_DEFAULT_PN_NUMBER);
1915 ir_node *block = new_immBlock();
1916 if (fallthrough != NULL) {
1917 add_immBlock_pred(block, fallthrough);
1919 add_immBlock_pred(block, proj);
1920 mature_immBlock(block);
1923 static ir_node *get_label_block(declaration_t *label)
1925 assert(label->namespace == NAMESPACE_LABEL);
1927 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
1928 return label->v.block;
1930 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
1932 ir_node *old_cur_block = get_cur_block();
1933 ir_node *block = new_immBlock();
1934 set_cur_block(old_cur_block);
1936 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
1937 label->v.block = block;
1939 ARR_APP1(ir_node *, imature_blocks, block);
1944 static void label_to_firm(const label_statement_t *statement)
1946 ir_node *block = get_label_block(statement->label);
1948 if(get_cur_block() != NULL) {
1949 ir_node *jmp = new_Jmp();
1950 add_immBlock_pred(block, jmp);
1953 set_cur_block(block);
1956 statement_to_firm(statement->label_statement);
1959 static void goto_to_firm(const goto_statement_t *statement)
1961 if(get_cur_block() == NULL)
1964 ir_node *block = get_label_block(statement->label);
1965 ir_node *jmp = new_Jmp();
1966 add_immBlock_pred(block, jmp);
1968 set_cur_block(NULL);
1971 static void statement_to_firm(statement_t *statement)
1973 switch(statement->type) {
1974 case STATEMENT_COMPOUND:
1975 compound_statement_to_firm((compound_statement_t*) statement);
1977 case STATEMENT_RETURN:
1978 return_statement_to_firm((return_statement_t*) statement);
1980 case STATEMENT_EXPRESSION:
1981 expression_statement_to_firm((expression_statement_t*) statement);
1984 if_statement_to_firm((if_statement_t*) statement);
1986 case STATEMENT_WHILE:
1987 while_statement_to_firm((while_statement_t*) statement);
1989 case STATEMENT_DO_WHILE:
1990 do_while_statement_to_firm((do_while_statement_t*) statement);
1992 case STATEMENT_DECLARATION:
1993 declaration_statement_to_firm((declaration_statement_t*) statement);
1995 case STATEMENT_BREAK:
1996 create_jump_statement(statement, break_label);
1998 case STATEMENT_CONTINUE:
1999 create_jump_statement(statement, continue_label);
2001 case STATEMENT_SWITCH:
2002 switch_statement_to_firm((switch_statement_t*) statement);
2004 case STATEMENT_CASE_LABEL:
2005 case_label_to_firm((case_label_statement_t*) statement);
2008 for_statement_to_firm((for_statement_t*) statement);
2010 case STATEMENT_LABEL:
2011 label_to_firm((label_statement_t*) statement);
2013 case STATEMENT_GOTO:
2014 goto_to_firm((goto_statement_t*) statement);
2019 panic("Statement not implemented\n");
2022 static int get_function_n_local_vars(declaration_t *declaration)
2029 static void initialize_function_parameters(declaration_t *declaration)
2031 ir_graph *irg = current_ir_graph;
2032 ir_node *args = get_irg_args(irg);
2033 ir_node *start_block = get_irg_start_block(irg);
2036 declaration_t *parameter = declaration->context.declarations;
2037 for( ; parameter != NULL; parameter = parameter->next) {
2038 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2039 type_t *type = parameter->type;
2041 bool needs_entity = parameter->address_taken;
2042 if(type->type == TYPE_COMPOUND_STRUCT
2043 || type->type == TYPE_COMPOUND_UNION) {
2044 needs_entity = true;
2048 panic("entities for function parameters not implemented yet");
2051 ir_mode *mode = get_ir_mode(parameter->type);
2053 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2056 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2057 parameter->v.value_number = next_value_number_function;
2058 ++next_value_number_function;
2060 set_value(parameter->v.value_number, proj);
2064 static void create_function(declaration_t *declaration)
2066 ir_entity *entity = get_function_entity(declaration);
2068 if(declaration->init.statement == NULL)
2071 assert(imature_blocks == NULL);
2072 imature_blocks = NEW_ARR_F(ir_node*, 0);
2074 int n_local_vars = get_function_n_local_vars(declaration);
2075 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2076 ir_node *first_block = get_cur_block();
2078 next_value_number_function = 0;
2079 initialize_function_parameters(declaration);
2081 statement_to_firm(declaration->init.statement);
2083 ir_node *end_block = get_irg_end_block(irg);
2085 /* do we have a return statement yet? */
2086 if(get_cur_block() != NULL) {
2087 assert(declaration->type->type == TYPE_FUNCTION);
2088 const function_type_t* const func_type
2089 = (const function_type_t*) declaration->type;
2091 if (func_type->result_type == type_void) {
2092 ret = new_Return(get_store(), 0, NULL);
2094 ir_mode *const mode = get_ir_mode(func_type->result_type);
2096 // ยง5.1.2.2.3 main implicitly returns 0
2097 if (strcmp(declaration->symbol->string, "main") == 0) {
2098 in[0] = new_Const(mode, get_mode_null(mode));
2100 in[0] = new_Unknown(mode);
2102 ret = new_Return(get_store(), 1, in);
2104 add_immBlock_pred(end_block, ret);
2107 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2108 mature_immBlock(imature_blocks[i]);
2110 DEL_ARR_F(imature_blocks);
2111 imature_blocks = NULL;
2113 mature_immBlock(first_block);
2114 mature_immBlock(end_block);
2116 irg_finalize_cons(irg);
2118 /* finalize the frame type */
2119 ir_type *frame_type = get_irg_frame_type(irg);
2120 int n = get_compound_n_members(frame_type);
2123 for(int i = 0; i < n; ++i) {
2124 ir_entity *entity = get_compound_member(frame_type, i);
2125 ir_type *entity_type = get_entity_type(entity);
2127 int align = get_type_alignment_bytes(entity_type);
2128 if(align > align_all)
2132 misalign = offset % align;
2136 set_entity_offset(entity, offset);
2137 offset += get_type_size_bytes(entity_type);
2139 set_type_size_bytes(frame_type, offset);
2140 set_type_alignment_bytes(frame_type, align_all);
2141 set_type_state(frame_type, layout_fixed);
2146 static void create_global_variable(declaration_t *declaration)
2148 ir_type *global_type = get_glob_type();
2149 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2152 ir_entity *entity = declaration->v.entity;
2153 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2154 set_entity_visibility(entity, visibility_local);
2155 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2156 set_entity_visibility(entity, visibility_external_allocated);
2158 set_entity_visibility(entity, visibility_external_visible);
2160 current_ir_graph = get_const_code_irg();
2161 create_initializer(declaration);
2164 static void context_to_firm(context_t *context)
2166 declaration_t *declaration = context->declarations;
2167 for( ; declaration != NULL; declaration = declaration->next) {
2168 if(declaration->namespace != NAMESPACE_NORMAL)
2170 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2171 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2173 if(declaration->symbol == NULL)
2176 type_t *type = declaration->type;
2177 if(type->type == TYPE_FUNCTION) {
2178 create_function(declaration);
2180 create_global_variable(declaration);
2185 void translation_unit_to_firm(translation_unit_t *unit)
2187 /* remove me later TODO FIXME */
2188 (void) get_type_size;
2190 /* just to be sure */
2191 continue_label = NULL;
2193 current_switch_cond = NULL;
2195 context_to_firm(& unit->context);