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 ir_node **imature_blocks;
37 typedef enum declaration_type_t {
38 DECLARATION_TYPE_UNKNOWN,
39 DECLARATION_TYPE_FUNCTION,
40 DECLARATION_TYPE_GLOBAL_VARIABLE,
41 DECLARATION_TYPE_LOCAL_VARIABLE,
42 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
43 DECLARATION_TYPE_COMPOUND_MEMBER,
44 DECLARATION_TYPE_LABEL_BLOCK,
47 static ir_type *get_ir_type(type_t *type);
49 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
53 const declaration_t *declaration = & value_numbers[pos]->declaration;
55 print_warning_prefix(declaration->source_position);
56 fprintf(stderr, "variable '%s' might be used uninitialized\n",
57 declaration->symbol->string);
59 fprintf(stderr, "Some variable might be used uninitialized\n");
60 return new_r_Unknown(irg, mode);
63 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
65 const source_position_t *pos = (const source_position_t*) dbg;
68 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
72 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
74 const source_position_t *pos = (const source_position_t*) dbg;
79 return pos->input_name;
82 void init_ast2firm(void)
84 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
85 type_void = make_atomic_type(ATOMIC_TYPE_VOID, 0);
86 type_int = make_atomic_type(ATOMIC_TYPE_INT, 0);
88 ir_type_int = get_ir_type(type_int);
89 ir_type_const_char = get_ir_type(type_const_char);
90 ir_type_void = get_ir_type(type_int); /* we don't have a real void
92 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
93 ir_type_void, mode_P_data);
95 type_void->firm_type = ir_type_void;
98 void exit_ast2firm(void)
102 static unsigned unique_id = 0;
104 static ident *unique_ident(const char *tag)
108 snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id);
110 return new_id_from_str(buf);
113 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
115 switch(atomic_type->atype) {
116 case ATOMIC_TYPE_SCHAR:
117 case ATOMIC_TYPE_CHAR:
119 case ATOMIC_TYPE_UCHAR:
121 case ATOMIC_TYPE_SHORT:
123 case ATOMIC_TYPE_USHORT:
125 case ATOMIC_TYPE_LONG:
126 case ATOMIC_TYPE_INT:
128 case ATOMIC_TYPE_ULONG:
129 case ATOMIC_TYPE_UINT:
131 case ATOMIC_TYPE_LONGLONG:
133 case ATOMIC_TYPE_ULONGLONG:
135 case ATOMIC_TYPE_FLOAT:
137 case ATOMIC_TYPE_DOUBLE:
139 case ATOMIC_TYPE_LONG_DOUBLE:
141 case ATOMIC_TYPE_BOOL:
143 #ifdef PROVIDE_COMPLEX
144 case ATOMIC_TYPE_FLOAT_COMPLEX:
145 case ATOMIC_TYPE_DOUBLE_COMPLEX:
146 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
147 panic("complex lowering not implemented yet");
149 case ATOMIC_TYPE_FLOAT_IMAGINARY:
150 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
151 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
152 panic("imaginary lowering not implemented yet");
155 case ATOMIC_TYPE_VOID:
156 /* firm has no real void... */
158 case ATOMIC_TYPE_INVALID:
161 panic("Encountered unknown atomic type");
165 static unsigned get_type_size(type_t *type);
167 static unsigned get_atomic_type_size(const atomic_type_t *type)
169 switch(type->atype) {
170 case ATOMIC_TYPE_CHAR:
171 case ATOMIC_TYPE_SCHAR:
172 case ATOMIC_TYPE_UCHAR:
175 case ATOMIC_TYPE_SHORT:
176 case ATOMIC_TYPE_USHORT:
179 case ATOMIC_TYPE_BOOL:
180 case ATOMIC_TYPE_INT:
181 case ATOMIC_TYPE_UINT:
182 case ATOMIC_TYPE_LONG:
183 case ATOMIC_TYPE_ULONG:
184 case ATOMIC_TYPE_FLOAT:
187 case ATOMIC_TYPE_LONGLONG:
188 case ATOMIC_TYPE_ULONGLONG:
189 case ATOMIC_TYPE_DOUBLE:
192 case ATOMIC_TYPE_LONG_DOUBLE:
195 case ATOMIC_TYPE_VOID:
198 case ATOMIC_TYPE_INVALID:
201 panic("Trying to determine size of invalid atomic type");
204 static unsigned get_compound_type_size(compound_type_t *type)
206 ir_type *irtype = get_ir_type(&type->type);
207 return get_type_size_bytes(irtype);
210 static unsigned get_array_type_size(array_type_t *type)
212 ir_type *irtype = get_ir_type(&type->type);
213 return get_type_size_bytes(irtype);
216 static unsigned get_type_size(type_t *type)
218 type = skip_typeref(type);
222 return get_atomic_type_size((const atomic_type_t*) type);
224 return get_mode_size_bytes(mode_Is);
225 case TYPE_COMPOUND_UNION:
226 case TYPE_COMPOUND_STRUCT:
227 return get_compound_type_size((compound_type_t*) type);
229 /* just a pointer to the function */
230 return get_mode_size_bytes(mode_P_code);
232 return get_mode_size_bytes(mode_P_data);
234 return get_array_type_size((array_type_t*) type);
241 panic("Trying to determine size of invalid type");
244 static unsigned count_parameters(const function_type_t *function_type)
248 function_parameter_t *parameter = function_type->parameters;
249 for ( ; parameter != NULL; parameter = parameter->next) {
259 static long fold_constant(const expression_t *expression);
261 static ir_type *create_atomic_type(const atomic_type_t *type)
263 ir_mode *mode = get_atomic_mode(type);
264 ident *id = get_mode_ident(mode);
265 ir_type *irtype = new_type_primitive(id, mode);
270 static ir_type *create_method_type(const function_type_t *function_type)
272 type_t *result_type = function_type->result_type;
274 ident *id = unique_ident("functiontype");
275 int n_parameters = count_parameters(function_type);
276 int n_results = result_type == type_void ? 0 : 1;
277 ir_type *irtype = new_type_method(id, n_parameters, n_results);
279 if(result_type != type_void) {
280 ir_type *restype = get_ir_type(result_type);
281 set_method_res_type(irtype, 0, restype);
284 function_parameter_t *parameter = function_type->parameters;
286 for( ; parameter != NULL; parameter = parameter->next) {
287 ir_type *p_irtype = get_ir_type(parameter->type);
288 set_method_param_type(irtype, n, p_irtype);
292 if(function_type->variadic || function_type->unspecified_parameters) {
293 set_method_variadicity(irtype, variadicity_variadic);
299 static ir_type *create_pointer_type(pointer_type_t *type)
301 type_t *points_to = type->points_to;
302 ir_type *ir_points_to;
303 /* Avoid endless recursion if the points_to type contains this poiner type
304 * again (might be a struct). We therefore first create a void* pointer
305 * and then set the real points_to type
307 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
308 ir_type_void, mode_P_data);
309 type->type.firm_type = ir_type;
311 ir_points_to = get_ir_type(points_to);
312 set_pointer_points_to_type(ir_type, ir_points_to);
317 static ir_type *create_array_type(array_type_t *type)
319 type_t *element_type = type->element_type;
320 ir_type *ir_element_type = get_ir_type(element_type);
322 ident *id = unique_ident("array");
323 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
325 if(type->size != NULL) {
326 int n_elements = fold_constant(type->size);
328 set_array_bounds_int(ir_type, 0, 0, n_elements);
330 size_t elemsize = get_type_size_bytes(ir_element_type);
331 int align = get_type_alignment_bytes(ir_element_type);
332 if(elemsize % align > 0) {
333 elemsize += align - (elemsize % align);
335 set_type_size_bytes(ir_type, n_elements * elemsize);
336 set_type_alignment_bytes(ir_type, align);
337 set_type_state(ir_type, layout_fixed);
343 #define INVALID_TYPE ((ir_type_ptr)-1)
345 static ir_type *create_struct_type(compound_type_t *type)
347 symbol_t *symbol = type->declaration->symbol;
350 id = unique_ident(symbol->string);
352 id = unique_ident("__anonymous_struct");
354 ir_type *ir_type = new_type_struct(id);
356 type->type.firm_type = ir_type;
360 declaration_t *entry = type->declaration->context.declarations;
361 for( ; entry != NULL; entry = entry->next) {
362 if(entry->namespace != NAMESPACE_NORMAL)
365 ident *ident = new_id_from_str(entry->symbol->string);
366 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
368 int entry_size = get_type_size_bytes(entry_ir_type);
369 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
370 int misalign = offset % entry_alignment;
373 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
374 set_entity_offset(entity, offset);
375 add_struct_member(ir_type, entity);
376 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
377 entry->v.entity = entity;
379 offset += entry_size;
380 if(entry_alignment > align_all) {
381 if(entry_alignment % align_all != 0) {
382 panic("Uneven alignments not supported yet");
384 align_all = entry_alignment;
388 int misalign = offset % align_all;
390 set_type_alignment_bytes(ir_type, align_all);
391 set_type_size_bytes(ir_type, offset);
392 set_type_state(ir_type, layout_fixed);
397 static ir_type *create_union_type(compound_type_t *type)
399 declaration_t *declaration = type->declaration;
400 symbol_t *symbol = declaration->symbol;
403 id = unique_ident(symbol->string);
405 id = unique_ident("__anonymous_union");
407 ir_type *ir_type = new_type_union(id);
409 type->type.firm_type = ir_type;
413 declaration_t *entry = declaration->context.declarations;
414 for( ; entry != NULL; entry = entry->next) {
415 if(entry->namespace != NAMESPACE_NORMAL)
418 ident *ident = new_id_from_str(entry->symbol->string);
419 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
421 int entry_size = get_type_size_bytes(entry_ir_type);
422 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
424 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
425 add_union_member(ir_type, entity);
426 set_entity_offset(entity, 0);
427 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
428 entry->v.entity = entity;
430 if(entry_size > size) {
433 if(entry_alignment > align_all) {
434 if(entry_alignment % align_all != 0) {
435 panic("Uneven alignments not supported yet");
437 align_all = entry_alignment;
441 set_type_alignment_bytes(ir_type, align_all);
442 set_type_size_bytes(ir_type, size);
443 set_type_state(ir_type, layout_fixed);
448 static ir_type *get_ir_type(type_t *type)
450 assert(type != NULL);
452 type = skip_typeref(type);
454 if(type->firm_type != NULL) {
455 assert(type->firm_type != INVALID_TYPE);
456 return type->firm_type;
459 ir_type *firm_type = NULL;
462 firm_type = create_atomic_type((atomic_type_t*) type);
465 firm_type = create_method_type((function_type_t*) type);
468 firm_type = create_pointer_type((pointer_type_t*) type);
471 firm_type = create_array_type((array_type_t*) type);
473 case TYPE_COMPOUND_STRUCT:
474 firm_type = create_struct_type((compound_type_t*) type);
476 case TYPE_COMPOUND_UNION:
477 firm_type = create_union_type((compound_type_t*) type);
480 firm_type = ir_type_int;
488 if(firm_type == NULL)
489 panic("unknown type found");
491 type->firm_type = firm_type;
495 static inline ir_mode *get_ir_mode(type_t *type)
497 ir_type *irtype = get_ir_type(type);
499 /* firm doesn't report a mode for arrays somehow... */
500 if(is_Array_type(irtype)) {
504 ir_mode *mode = get_type_mode(irtype);
505 assert(mode != NULL);
509 static ir_entity* get_function_entity(declaration_t *declaration)
511 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
512 return declaration->v.entity;
513 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
515 symbol_t *symbol = declaration->symbol;
516 ident *id = new_id_from_str(symbol->string);
518 ir_type *global_type = get_glob_type();
519 ir_type *ir_type_method = get_ir_type(declaration->type);
520 assert(is_Method_type(ir_type_method));
522 ir_entity *entity = new_entity(global_type, id, ir_type_method);
523 set_entity_ld_ident(entity, id);
524 if(declaration->storage_class == STORAGE_CLASS_STATIC
525 || declaration->is_inline) {
526 set_entity_visibility(entity, visibility_local);
527 } else if(declaration->init.statement != NULL) {
528 set_entity_visibility(entity, visibility_external_visible);
530 set_entity_visibility(entity, visibility_external_allocated);
533 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
534 declaration->v.entity = entity;
541 static ir_node *expression_to_firm(const expression_t *expression);
542 static ir_node *expression_to_modeb(const expression_t *expression);
544 static dbg_info *get_dbg_info(const source_position_t *pos)
546 return (dbg_info*) pos;
549 static ir_node *const_to_firm(const const_t *cnst)
551 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
552 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
555 if(mode_is_float(mode)) {
556 tv = new_tarval_from_double(cnst->v.float_value, mode);
558 tv = new_tarval_from_long(cnst->v.int_value, mode);
561 return new_d_Const(dbgi, mode, tv);
564 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
566 assert(entity != NULL);
567 union symconst_symbol sym;
568 sym.entity_p = entity;
569 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
572 static ir_node *string_literal_to_firm(const string_literal_t* literal)
574 ir_type *global_type = get_glob_type();
575 ir_type *type = new_type_array(unique_ident("strtype"), 1,
578 ident *id = unique_ident("Lstr");
579 ir_entity *entity = new_entity(global_type, id, type);
580 set_entity_ld_ident(entity, id);
581 set_entity_variability(entity, variability_constant);
583 ir_type *elem_type = ir_type_const_char;
584 ir_mode *mode = get_type_mode(elem_type);
586 const char *string = literal->value;
587 size_t slen = strlen(string) + 1;
589 set_array_lower_bound_int(type, 0, 0);
590 set_array_upper_bound_int(type, 0, slen);
591 set_type_size_bytes(type, slen);
592 set_type_state(type, layout_fixed);
594 tarval **tvs = xmalloc(slen * sizeof(tvs[0]));
595 for(size_t i = 0; i < slen; ++i) {
596 tvs[i] = new_tarval_from_long(string[i], mode);
599 set_array_entity_values(entity, tvs, slen);
602 dbg_info *dbgi = get_dbg_info(&literal->expression.source_position);
604 return create_symconst(dbgi, entity);
607 static ir_node *load_from_expression_addr(type_t *type, ir_node *addr,
610 ir_mode *mode = get_ir_mode(type);
611 ir_node *memory = get_store();
612 ir_node *load = new_d_Load(dbgi, memory, addr, mode);
613 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
614 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
620 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
622 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
623 declaration_t *declaration = ref->declaration;
624 type_t *type = skip_typeref(declaration->type);
625 ir_mode *mode = get_ir_mode(type);
627 switch((declaration_type_t) declaration->declaration_type) {
628 case DECLARATION_TYPE_UNKNOWN:
630 case DECLARATION_TYPE_LOCAL_VARIABLE:
631 return get_value(declaration->v.value_number, mode);
632 case DECLARATION_TYPE_FUNCTION: {
633 return create_symconst(dbgi, declaration->v.entity);
635 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
636 ir_entity *entity = declaration->v.entity;
637 ir_node *symconst = create_symconst(dbgi, entity);
639 if(type->type == TYPE_ARRAY) {
642 return load_from_expression_addr(type, symconst, dbgi);
645 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY:
646 case DECLARATION_TYPE_COMPOUND_MEMBER:
647 case DECLARATION_TYPE_LABEL_BLOCK:
648 panic("not implemented reference type");
651 panic("reference to declaration with unknown type found");
654 static ir_node *reference_addr(const reference_expression_t *ref)
656 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
657 declaration_t *declaration = ref->declaration;
659 switch((declaration_type_t) declaration->declaration_type) {
660 case DECLARATION_TYPE_UNKNOWN:
662 case DECLARATION_TYPE_LOCAL_VARIABLE:
663 panic("local variable without entity has no address");
664 case DECLARATION_TYPE_FUNCTION: {
665 return create_symconst(dbgi, declaration->v.entity);
667 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
668 ir_entity *entity = declaration->v.entity;
669 ir_node *symconst = create_symconst(dbgi, entity);
672 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY:
673 case DECLARATION_TYPE_COMPOUND_MEMBER:
674 case DECLARATION_TYPE_LABEL_BLOCK:
675 panic("not implemented reference type");
678 panic("reference to declaration with unknown type found");
681 static ir_node *call_expression_to_firm(const call_expression_t *call)
683 assert(get_cur_block() != NULL);
685 expression_t *function = call->function;
686 ir_node *callee = expression_to_firm(function);
688 assert(function->datatype->type == TYPE_FUNCTION);
689 function_type_t *function_type = (function_type_t*) function->datatype;
691 int n_parameters = 0;
692 call_argument_t *argument = call->arguments;
693 for( ; argument != NULL; argument = argument->next) {
697 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
698 ir_type *new_method_type = NULL;
699 if(function_type->variadic || function_type->unspecified_parameters) {
700 /* we need to construct a new method type matching the call
702 int n_res = get_method_n_ress(ir_method_type);
703 new_method_type = new_type_method(unique_ident("calltype"),
704 n_parameters, n_res);
705 set_method_calling_convention(new_method_type,
706 get_method_calling_convention(ir_method_type));
707 set_method_additional_properties(new_method_type,
708 get_method_additional_properties(ir_method_type));
710 for(int i = 0; i < n_res; ++i) {
711 set_method_res_type(new_method_type, i,
712 get_method_res_type(ir_method_type, i));
715 ir_node *in[n_parameters];
717 argument = call->arguments;
719 for( ; argument != NULL; argument = argument->next) {
720 expression_t *expression = argument->expression;
721 ir_node *arg_node = expression_to_firm(expression);
724 if(new_method_type != NULL) {
725 ir_type *irtype = get_ir_type(expression->datatype);
726 set_method_param_type(new_method_type, n, irtype);
731 assert(n == n_parameters);
733 if(new_method_type != NULL)
734 ir_method_type = new_method_type;
736 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
737 ir_node *store = get_store();
738 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
740 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
743 type_t *result_type = function_type->result_type;
744 ir_node *result = NULL;
745 if(result_type != type_void) {
746 ir_mode *mode = get_ir_mode(result_type);
747 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
748 result = new_d_Proj(dbgi, resproj, mode, 0);
754 static ir_node *expression_to_addr(const expression_t *expression);
756 static void set_value_for_expression(const expression_t *expression,
759 if(expression->type == EXPR_REFERENCE) {
760 reference_expression_t *ref = (reference_expression_t*) expression;
762 declaration_t *declaration = ref->declaration;
763 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
764 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
765 set_value(declaration->v.value_number, value);
770 dbg_info *dbgi = get_dbg_info(&expression->source_position);
771 ir_node *addr = expression_to_addr(expression);
772 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
773 ir_node *memory = get_store();
774 ir_node *store = new_d_Store(dbgi, memory, addr, value);
775 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
776 set_store(store_mem);
779 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
781 ir_mode *value_mode = get_irn_mode(value);
783 if(value_mode == dest_mode)
786 if(dest_mode == mode_b) {
787 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
788 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
789 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
793 return new_d_Conv(dbgi, value, dest_mode);
796 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
798 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
799 type_t *type = expression->expression.datatype;
800 ir_mode *mode = get_ir_mode(type);
802 if(expression->type == UNEXPR_TAKE_ADDRESS)
803 return expression_to_addr(expression->value);
805 const expression_t *value = expression->value;
806 ir_node *value_node = expression_to_firm(value);
808 switch(expression->type) {
810 return new_d_Minus(dbgi, value_node, mode);
813 case UNEXPR_BITWISE_NEGATE:
814 return new_d_Not(dbgi, value_node, mode);
816 if(get_irn_mode(value_node) != mode_b) {
817 value_node = create_conv(dbgi, value_node, mode_b);
819 value_node = new_d_Not(dbgi, value_node, mode_b);
821 value_node = create_conv(dbgi, value_node, mode);
824 case UNEXPR_DEREFERENCE:
825 return load_from_expression_addr(type, value_node, dbgi);
826 case UNEXPR_POSTFIX_INCREMENT: {
827 ir_node *one = new_Const(mode, get_mode_one(mode));
828 ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
829 set_value_for_expression(value, new_value);
832 case UNEXPR_POSTFIX_DECREMENT: {
833 ir_node *one = new_Const(mode, get_mode_one(mode));
834 ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
835 set_value_for_expression(value, new_value);
838 case UNEXPR_PREFIX_INCREMENT: {
839 ir_node *one = new_Const(mode, get_mode_one(mode));
840 ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
841 set_value_for_expression(value, new_value);
844 case UNEXPR_PREFIX_DECREMENT: {
845 ir_node *one = new_Const(mode, get_mode_one(mode));
846 ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
847 set_value_for_expression(value, new_value);
851 return create_conv(dbgi, value_node, mode);
853 case UNEXPR_TAKE_ADDRESS:
857 panic("invalid UNEXPR type found");
860 static long get_pnc(binary_expression_type_t type)
863 case BINEXPR_EQUAL: return pn_Cmp_Eq;
864 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
865 case BINEXPR_LESS: return pn_Cmp_Lt;
866 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
867 case BINEXPR_GREATER: return pn_Cmp_Gt;
868 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
872 panic("trying to get pn_Cmp from non-comparison binexpr type");
875 static ir_node *create_lazy_op(const binary_expression_t *expression)
877 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
879 bool is_or = (expression->type == BINEXPR_LOGICAL_OR);
880 assert(is_or || expression->type == BINEXPR_LOGICAL_AND);
882 ir_node *val1 = expression_to_modeb(expression->left);
883 ir_node *cond = new_d_Cond(dbgi, val1);
884 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
885 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
887 ir_node *fallthrough_block = new_immBlock();
890 ir_node *calc_val2_block = new_immBlock();
892 add_immBlock_pred(calc_val2_block, false_proj);
894 add_immBlock_pred(calc_val2_block, true_proj);
897 mature_immBlock(calc_val2_block);
899 ir_node *val2 = expression_to_modeb(expression->right);
900 if(get_cur_block() != NULL) {
901 ir_node *jmp = new_d_Jmp(dbgi);
902 add_immBlock_pred(fallthrough_block, jmp);
908 constb = new_d_Const(dbgi, mode_b, get_tarval_b_true());
909 add_immBlock_pred(fallthrough_block, true_proj);
911 constb = new_d_Const(dbgi, mode_b, get_tarval_b_false());
912 add_immBlock_pred(fallthrough_block, false_proj);
914 mature_immBlock(fallthrough_block);
916 set_cur_block(fallthrough_block);
918 ir_node *in[2] = { val2, constb };
919 ir_node *val = new_d_Phi(dbgi, 2, in, mode_b);
924 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
925 ir_node *right, ir_mode *mode);
927 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
928 create_arithmetic_func func)
930 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
931 ir_node *left = expression_to_firm(expression->left);
932 ir_node *right = expression_to_firm(expression->right);
933 type_t *type = expression->right->datatype;
934 /* be careful with the modes, because in asithmetic assign nodes only
935 * the right operand has the mode of the arithmetic alread */
936 ir_mode *mode = get_ir_mode(type);
937 left = create_conv(dbgi, left, mode);
938 ir_node *res = func(dbgi, left, right, mode);
943 static ir_node *create_arithmetic_assign_binop(
944 const binary_expression_t *expression, create_arithmetic_func func)
946 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
947 ir_node *value = create_arithmetic_binop(expression, func);
948 type_t *type = expression->expression.datatype;
949 ir_mode *mode = get_ir_mode(type);
951 assert(type->type != TYPE_POINTER);
953 value = create_conv(dbgi, value, mode);
954 set_value_for_expression(expression->left, value);
959 static ir_node *create_add(const binary_expression_t *expression)
961 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
962 ir_node *left = expression_to_firm(expression->left);
963 ir_node *right = expression_to_firm(expression->right);
964 type_t *type = expression->expression.datatype;
965 ir_mode *mode = get_ir_mode(type);
967 expression_t *expr_left = expression->left;
968 expression_t *expr_right = expression->right;
969 type_t *type_left = skip_typeref(expr_left->datatype);
970 type_t *type_right = skip_typeref(expr_right->datatype);
972 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
973 return new_d_Add(dbgi, left, right, mode);
978 pointer_type_t *pointer_type;
979 if(type_left->type == TYPE_POINTER) {
982 pointer_type = (pointer_type_t*) type_left;
984 assert(type_right->type == TYPE_POINTER);
987 pointer_type = (pointer_type_t*) type_right;
990 type_t *points_to = pointer_type->points_to;
991 unsigned elem_size = get_type_size(points_to);
993 assert(elem_size >= 1);
995 integer = create_conv(dbgi, integer, mode_Is);
996 ir_node *cnst = new_Const_long(mode_Is, (int) elem_size);
997 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1001 ir_node *res = new_d_Add(dbgi, pointer, integer, mode);
1006 static ir_node *create_sub(const binary_expression_t *expression)
1008 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1009 ir_node *left = expression_to_firm(expression->left);
1010 ir_node *right = expression_to_firm(expression->right);
1011 type_t *type = expression->expression.datatype;
1012 ir_mode *mode = get_ir_mode(type);
1014 expression_t *expr_left = expression->left;
1015 expression_t *expr_right = expression->right;
1016 type_t *type_left = skip_typeref(expr_left->datatype);
1017 type_t *type_right = skip_typeref(expr_right->datatype);
1019 if((is_type_arithmetic(type_left) && is_type_arithmetic(type_right))
1020 || (type_left->type == TYPE_POINTER
1021 && type_right->type == TYPE_POINTER)) {
1022 return new_d_Sub(dbgi, left, right, mode);
1025 assert(type_right->type == TYPE_POINTER);
1026 ir_node *pointer = left;
1027 ir_node *integer = right;
1028 pointer_type_t *pointer_type = (pointer_type_t*) type_right;
1030 type_t *points_to = pointer_type->points_to;
1031 unsigned elem_size = get_type_size(points_to);
1033 assert(elem_size >= 1);
1035 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
1036 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
1040 ir_node *res = new_d_Sub(dbgi, pointer, integer, mode);
1045 static ir_node *create_divmod(const binary_expression_t *expression)
1047 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1048 ir_node *left = expression_to_firm(expression->left);
1049 ir_node *right = expression_to_firm(expression->right);
1050 ir_node *pin = new_Pin(new_NoMem());
1051 type_t *type = expression->expression.datatype;
1052 ir_mode *mode = get_ir_mode(type);
1056 if(expression->type == BINEXPR_DIV) {
1057 if(mode_is_float(mode)) {
1058 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1059 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1061 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1062 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1065 assert(expression->type == BINEXPR_MOD);
1066 assert(!mode_is_float(mode));
1067 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1068 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1076 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1078 binary_expression_type_t type = expression->type;
1081 case BINEXPR_NOTEQUAL:
1083 case BINEXPR_LESSEQUAL:
1084 case BINEXPR_GREATER:
1085 case BINEXPR_GREATEREQUAL: {
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 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1090 long pnc = get_pnc(type);
1091 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1094 case BINEXPR_ASSIGN: {
1095 ir_node *right = expression_to_firm(expression->right);
1096 set_value_for_expression(expression->left, right);
1100 return create_add(expression);
1102 return create_sub(expression);
1104 return create_arithmetic_binop(expression, new_d_Mul);
1105 case BINEXPR_BITWISE_AND:
1106 return create_arithmetic_binop(expression, new_d_And);
1107 case BINEXPR_BITWISE_OR:
1108 return create_arithmetic_binop(expression, new_d_Or);
1109 case BINEXPR_BITWISE_XOR:
1110 return create_arithmetic_binop(expression, new_d_Eor);
1111 case BINEXPR_SHIFTLEFT:
1112 return create_arithmetic_binop(expression, new_d_Shl);
1113 case BINEXPR_SHIFTRIGHT:
1114 return create_arithmetic_binop(expression, new_d_Shr);
1117 return create_divmod(expression);
1118 case BINEXPR_LOGICAL_AND:
1119 case BINEXPR_LOGICAL_OR:
1120 return create_lazy_op(expression);
1122 expression_to_firm(expression->left);
1123 return expression_to_firm(expression->right);
1124 case BINEXPR_ADD_ASSIGN:
1125 return create_arithmetic_assign_binop(expression, new_d_Add);
1126 case BINEXPR_SUB_ASSIGN:
1127 return create_arithmetic_assign_binop(expression, new_d_Sub);
1128 case BINEXPR_MUL_ASSIGN:
1129 return create_arithmetic_assign_binop(expression, new_d_Mul);
1130 case BINEXPR_BITWISE_AND_ASSIGN:
1131 return create_arithmetic_assign_binop(expression, new_d_And);
1132 case BINEXPR_BITWISE_OR_ASSIGN:
1133 return create_arithmetic_assign_binop(expression, new_d_Or);
1134 case BINEXPR_BITWISE_XOR_ASSIGN:
1135 return create_arithmetic_assign_binop(expression, new_d_Eor);
1136 case BINEXPR_SHIFTLEFT_ASSIGN:
1137 return create_arithmetic_assign_binop(expression, new_d_Shl);
1138 case BINEXPR_SHIFTRIGHT_ASSIGN:
1139 return create_arithmetic_assign_binop(expression, new_d_Shr);
1141 panic("TODO binexpr type");
1145 static ir_node *array_access_addr(const array_access_expression_t *expression)
1147 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1149 ir_node *base_addr = expression_to_firm(expression->array_ref);
1150 ir_node *offset = expression_to_firm(expression->index);
1151 offset = create_conv(dbgi, offset, mode_Iu);
1153 unsigned elem_size = get_type_size(expression->expression.datatype);
1154 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1155 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1157 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1162 static ir_node *array_access_to_firm(
1163 const array_access_expression_t *expression)
1165 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1166 ir_node *addr = array_access_addr(expression);
1167 type_t *type = expression->expression.datatype;
1169 return load_from_expression_addr(type, addr, dbgi);
1172 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1174 type_t *type = expression->type;
1176 type = expression->size_expression->datatype;
1177 assert(type != NULL);
1180 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1181 unsigned size = get_type_size(type);
1182 ir_node *size_node = new_Const_long(mode, size);
1187 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1189 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1191 ir_node *condition = expression_to_modeb(expression->condition);
1192 ir_node *cond = new_d_Cond(dbgi, condition);
1193 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1194 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1196 /* create the true block */
1197 ir_node *true_block = new_immBlock();
1198 add_immBlock_pred(true_block, true_proj);
1199 mature_immBlock(true_block);
1201 ir_node *true_val = expression_to_firm(expression->true_expression);
1202 ir_node *true_jmp = new_Jmp();
1204 /* create the false block */
1205 ir_node *false_block = new_immBlock();
1206 add_immBlock_pred(false_block, false_proj);
1207 mature_immBlock(false_block);
1209 ir_node *false_val = expression_to_firm(expression->false_expression);
1210 ir_node *false_jmp = new_Jmp();
1212 /* create the common block */
1213 ir_node *common_block = new_immBlock();
1214 add_immBlock_pred(common_block, true_jmp);
1215 add_immBlock_pred(common_block, false_jmp);
1216 mature_immBlock(common_block);
1218 ir_node *in[2] = { true_val, false_val };
1219 ir_mode *mode = get_irn_mode(true_val);
1220 assert(get_irn_mode(false_val) == mode);
1221 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1226 static ir_node *expression_to_addr(const expression_t *expression)
1228 switch(expression->type) {
1229 case EXPR_REFERENCE:
1230 return reference_addr((const reference_expression_t*) expression);
1231 case EXPR_ARRAY_ACCESS:
1232 return array_access_addr((const array_access_expression_t*) expression);
1236 panic("trying to get address of non-lvalue");
1239 static ir_node *_expression_to_firm(const expression_t *expression)
1241 switch(expression->type) {
1243 return const_to_firm((const const_t*) expression);
1244 case EXPR_STRING_LITERAL:
1245 return string_literal_to_firm((const string_literal_t*) expression);
1246 case EXPR_REFERENCE:
1247 return reference_expression_to_firm(
1248 (const reference_expression_t*) expression);
1250 return call_expression_to_firm((const call_expression_t*) expression);
1252 return unary_expression_to_firm((const unary_expression_t*) expression);
1254 return binary_expression_to_firm(
1255 (const binary_expression_t*) expression);
1256 case EXPR_ARRAY_ACCESS:
1257 return array_access_to_firm(
1258 (const array_access_expression_t*) expression);
1260 return sizeof_to_firm((const sizeof_expression_t*) expression);
1261 case EXPR_CONDITIONAL:
1262 return conditional_to_firm((const conditional_expression_t*)expression);
1266 panic("unsupported expression found");
1269 static ir_node *expression_to_firm(const expression_t *expression)
1271 ir_node *res = _expression_to_firm(expression);
1273 if(expression->datatype == type_void)
1276 ir_mode *mode = get_ir_mode(expression->datatype);
1277 res = create_conv(NULL, res, mode);
1281 static ir_node *expression_to_modeb(const expression_t *expression)
1283 ir_node *res = _expression_to_firm(expression);
1284 res = create_conv(NULL, res, mode_b);
1289 static void statement_to_firm(statement_t *statement);
1291 static void return_statement_to_firm(return_statement_t *statement)
1293 if(get_cur_block() == NULL)
1296 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1299 if(statement->return_value != NULL) {
1300 ir_node *retval = expression_to_firm(statement->return_value);
1304 ret = new_d_Return(dbgi, get_store(), 1, in);
1306 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1308 ir_node *end_block = get_irg_end_block(current_ir_graph);
1309 add_immBlock_pred(end_block, ret);
1311 set_cur_block(NULL);
1314 static void compound_statement_to_firm(compound_statement_t *compound)
1316 statement_t *statement = compound->statements;
1317 for( ; statement != NULL; statement = statement->next) {
1318 //context2firm(&statement->context);
1319 statement_to_firm(statement);
1323 static void expression_statement_to_firm(expression_statement_t *statement)
1325 if(get_cur_block() == NULL)
1328 expression_to_firm(statement->expression);
1331 static void if_statement_to_firm(if_statement_t *statement)
1333 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1334 ir_node *condition = expression_to_modeb(statement->condition);
1336 /* make sure we have a mode_b condition */
1337 ir_node *cond = new_d_Cond(dbgi, condition);
1338 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1339 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1341 ir_node *fallthrough_block = new_immBlock();
1343 /* the true (blocks) */
1344 ir_node *true_block = new_immBlock();
1345 add_immBlock_pred(true_block, true_proj);
1346 mature_immBlock(true_block);
1348 statement_to_firm(statement->true_statement);
1349 if(get_cur_block() != NULL) {
1350 ir_node *jmp = new_Jmp();
1351 add_immBlock_pred(fallthrough_block, jmp);
1354 /* the false (blocks) */
1355 if(statement->false_statement != NULL) {
1356 ir_node *false_block = new_immBlock();
1357 add_immBlock_pred(false_block, false_proj);
1358 mature_immBlock(false_block);
1360 statement_to_firm(statement->false_statement);
1361 if(get_cur_block() != NULL) {
1362 ir_node *jmp = new_Jmp();
1363 add_immBlock_pred(fallthrough_block, jmp);
1366 add_immBlock_pred(fallthrough_block, false_proj);
1368 mature_immBlock(fallthrough_block);
1370 set_cur_block(fallthrough_block);
1373 static void while_statement_to_firm(while_statement_t *statement)
1375 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1377 ir_node *jmp = NULL;
1378 if(get_cur_block() != NULL) {
1382 /* create the header block */
1383 ir_node *header_block = new_immBlock();
1385 add_immBlock_pred(header_block, jmp);
1388 /* create the condition */
1389 ir_node *condition = expression_to_modeb(statement->condition);
1390 ir_node *cond = new_d_Cond(dbgi, condition);
1391 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1392 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1394 /* the false block */
1395 ir_node *false_block = new_immBlock();
1396 add_immBlock_pred(false_block, false_proj);
1399 ir_node *body_block = new_immBlock();
1400 add_immBlock_pred(body_block, true_proj);
1401 mature_immBlock(body_block);
1403 ir_node *old_continue_label = continue_label;
1404 ir_node *old_break_label = break_label;
1405 continue_label = header_block;
1406 break_label = false_block;
1408 statement_to_firm(statement->body);
1410 assert(continue_label == header_block);
1411 assert(break_label == false_block);
1412 continue_label = old_continue_label;
1413 break_label = old_break_label;
1415 if(get_cur_block() != NULL) {
1416 ir_node *jmp = new_Jmp();
1417 add_immBlock_pred(header_block, jmp);
1420 mature_immBlock(header_block);
1421 mature_immBlock(false_block);
1423 set_cur_block(false_block);
1426 static void do_while_statement_to_firm(do_while_statement_t *statement)
1428 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1430 ir_node *jmp = NULL;
1431 if(get_cur_block() != NULL) {
1435 /* create the header block */
1436 ir_node *header_block = new_immBlock();
1438 /* the false block */
1439 ir_node *false_block = new_immBlock();
1442 ir_node *body_block = new_immBlock();
1444 add_immBlock_pred(body_block, jmp);
1447 ir_node *old_continue_label = continue_label;
1448 ir_node *old_break_label = break_label;
1449 continue_label = header_block;
1450 break_label = false_block;
1452 statement_to_firm(statement->body);
1454 assert(continue_label == header_block);
1455 assert(break_label == false_block);
1456 continue_label = old_continue_label;
1457 break_label = old_break_label;
1459 if(get_cur_block() == NULL) {
1460 mature_immBlock(header_block);
1461 mature_immBlock(body_block);
1465 ir_node *body_jmp = new_Jmp();
1466 add_immBlock_pred(header_block, body_jmp);
1467 mature_immBlock(header_block);
1469 /* create the condition */
1470 ir_node *condition = expression_to_modeb(statement->condition);
1471 ir_node *cond = new_d_Cond(dbgi, condition);
1472 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1473 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1475 add_immBlock_pred(body_block, true_proj);
1476 mature_immBlock(body_block);
1478 add_immBlock_pred(false_block, false_proj);
1479 mature_immBlock(false_block);
1481 set_cur_block(false_block);
1484 static void for_statement_to_firm(for_statement_t *statement)
1486 dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position);
1488 ir_node *jmp = NULL;
1489 if (get_cur_block() != NULL) {
1490 if(statement->initialisation != NULL) {
1491 expression_to_firm(statement->initialisation);
1496 /* create the step block */
1497 ir_node *const step_block = new_immBlock();
1498 if (statement->step != NULL) {
1499 expression_to_firm(statement->step);
1501 ir_node *const step_jmp = new_Jmp();
1503 /* create the header block */
1504 ir_node *const header_block = new_immBlock();
1506 add_immBlock_pred(header_block, jmp);
1508 add_immBlock_pred(header_block, step_jmp);
1510 /* create the condition */
1512 ir_node *false_proj;
1513 if (statement->condition != NULL) {
1514 ir_node *const condition = expression_to_modeb(statement->condition);
1515 ir_node *const cond = new_d_Cond(dbgi, condition);
1516 true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1517 false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1519 keep_alive(header_block);
1520 true_proj = new_Jmp();
1524 /* the false block */
1525 ir_node *const false_block = new_immBlock();
1526 if (false_proj != NULL) {
1527 add_immBlock_pred(false_block, false_proj);
1531 ir_node *const body_block = new_immBlock();
1532 add_immBlock_pred(body_block, true_proj);
1533 mature_immBlock(body_block);
1535 ir_node *const old_continue_label = continue_label;
1536 ir_node *const old_break_label = break_label;
1537 continue_label = step_block;
1538 break_label = false_block;
1540 statement_to_firm(statement->body);
1542 assert(continue_label == step_block);
1543 assert(break_label == false_block);
1544 continue_label = old_continue_label;
1545 break_label = old_break_label;
1547 if (get_cur_block() != NULL) {
1548 ir_node *const jmp = new_Jmp();
1549 add_immBlock_pred(step_block, jmp);
1552 mature_immBlock(step_block);
1553 mature_immBlock(header_block);
1554 mature_immBlock(false_block);
1556 set_cur_block(false_block);
1559 static void create_declaration_entity(declaration_t *declaration,
1560 declaration_type_t declaration_type,
1561 ir_type *parent_type)
1563 ident *id = new_id_from_str(declaration->symbol->string);
1564 ir_type *irtype = get_ir_type(declaration->type);
1565 ir_entity *entity = new_entity(parent_type, id, irtype);
1566 set_entity_ld_ident(entity, id);
1568 declaration->declaration_type = declaration_type;
1569 declaration->v.entity = entity;
1570 set_entity_variability(entity, variability_uninitialized);
1571 /* TODO: visibility? */
1574 static void create_initializer(declaration_t *declaration)
1576 initializer_t *initializer = declaration->init.initializer;
1577 if(initializer == NULL)
1580 if(initializer->type == INITIALIZER_VALUE) {
1581 assert(initializer->designator == NULL);
1582 assert(initializer->next == NULL);
1583 ir_node *init_node = expression_to_firm(initializer->v.value);
1585 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1586 set_value(declaration->v.value_number, init_node);
1588 ir_entity *entity = declaration->v.entity;
1590 set_entity_variability(entity, variability_initialized);
1591 set_atomic_ent_value(entity, init_node);
1594 assert(initializer->type == INITIALIZER_LIST);
1595 panic("list initializer not supported yet");
1599 static void create_local_variable(declaration_t *declaration)
1601 bool needs_entity = declaration->address_taken;
1603 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
1606 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
1607 create_declaration_entity(declaration,
1608 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
1611 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1612 declaration->v.value_number = next_value_number_function;
1613 ++next_value_number_function;
1616 create_initializer(declaration);
1619 static void declaration_statement_to_firm(declaration_statement_t *statement)
1621 declaration_t *declaration = statement->declarations_begin;
1622 declaration_t *end = statement->declarations_end->next;
1623 for( ; declaration != end; declaration = declaration->next) {
1624 type_t *type = declaration->type;
1626 switch(declaration->storage_class) {
1627 case STORAGE_CLASS_TYPEDEF:
1629 case STORAGE_CLASS_STATIC:
1630 panic("static local vars not implemented yet");
1631 case STORAGE_CLASS_ENUM_ENTRY:
1632 panic("enum entry declaration in local block found");
1633 case STORAGE_CLASS_EXTERN:
1634 panic("extern declaration in local block found");
1635 case STORAGE_CLASS_NONE:
1636 case STORAGE_CLASS_AUTO:
1637 case STORAGE_CLASS_REGISTER:
1638 if(type->type == TYPE_FUNCTION) {
1639 panic("nested functions not supported yet");
1641 create_local_variable(declaration);
1645 panic("invalid storage class found");
1649 static void create_jump_statement(const statement_t *statement,
1650 ir_node *target_block)
1652 dbg_info *dbgi = get_dbg_info(&statement->source_position);
1653 ir_node *jump = new_d_Jmp(dbgi);
1654 add_immBlock_pred(target_block, jump);
1656 set_cur_block(NULL);
1659 static void switch_statement_to_firm(const switch_statement_t *statement)
1661 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1663 ir_node *expression = expression_to_firm(statement->expression);
1664 ir_node *cond = new_d_Cond(dbgi, expression);
1665 ir_node *break_block = new_immBlock();
1667 set_cur_block(NULL);
1669 ir_node *old_switch_cond = current_switch_cond;
1670 ir_node *old_break_label = break_label;
1671 current_switch_cond = cond;
1672 break_label = break_block;
1674 statement_to_firm(statement->body);
1676 if(get_cur_block() != NULL) {
1677 ir_node *jmp = new_Jmp();
1678 add_immBlock_pred(break_block, jmp);
1681 assert(current_switch_cond == cond);
1682 assert(break_label == break_block);
1683 current_switch_cond = old_switch_cond;
1684 break_label = old_break_label;
1686 mature_immBlock(break_block);
1687 set_cur_block(break_block);
1690 static long fold_constant(const expression_t *expression)
1692 ir_graph *old_current_ir_graph = current_ir_graph;
1693 current_ir_graph = get_const_code_irg();
1695 ir_node *cnst = expression_to_firm(expression);
1696 if(!is_Const(cnst)) {
1697 panic("couldn't fold constantl");
1699 tarval *tv = get_Const_tarval(cnst);
1700 if(!tarval_is_long(tv)) {
1701 panic("folded constant not an integer");
1704 long res = get_tarval_long(tv);
1706 current_ir_graph = old_current_ir_graph;
1710 static void case_label_to_firm(const case_label_statement_t *statement)
1712 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1714 /* let's create a node and hope firm constant folding creates a Const
1717 set_cur_block(get_nodes_block(current_switch_cond));
1718 if(statement->expression) {
1719 long pn = fold_constant(statement->expression);
1720 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
1721 /* oops someone detected our cheating... */
1722 panic("magic default pn used");
1724 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
1726 proj = new_d_defaultProj(dbgi, current_switch_cond,
1727 MAGIC_DEFAULT_PN_NUMBER);
1730 ir_node *block = new_immBlock();
1731 add_immBlock_pred(block, proj);
1732 mature_immBlock(block);
1735 static ir_node *get_label_block(declaration_t *label)
1737 assert(label->namespace == NAMESPACE_LABEL);
1739 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
1740 return label->v.block;
1742 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
1744 ir_node *old_cur_block = get_cur_block();
1745 ir_node *block = new_immBlock();
1746 set_cur_block(old_cur_block);
1748 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
1749 label->v.block = block;
1751 ARR_APP1(imature_blocks, block);
1756 static void label_to_firm(const label_statement_t *statement)
1758 ir_node *block = get_label_block(statement->label);
1760 if(get_cur_block() != NULL) {
1761 ir_node *jmp = new_Jmp();
1762 add_immBlock_pred(block, jmp);
1765 set_cur_block(block);
1768 statement_to_firm(statement->label_statement);
1771 static void goto_to_firm(const goto_statement_t *statement)
1773 if(get_cur_block() == NULL)
1776 ir_node *block = get_label_block(statement->label);
1777 ir_node *jmp = new_Jmp();
1778 add_immBlock_pred(block, jmp);
1780 set_cur_block(NULL);
1783 static void statement_to_firm(statement_t *statement)
1785 switch(statement->type) {
1786 case STATEMENT_COMPOUND:
1787 compound_statement_to_firm((compound_statement_t*) statement);
1789 case STATEMENT_RETURN:
1790 return_statement_to_firm((return_statement_t*) statement);
1792 case STATEMENT_EXPRESSION:
1793 expression_statement_to_firm((expression_statement_t*) statement);
1796 if_statement_to_firm((if_statement_t*) statement);
1798 case STATEMENT_WHILE:
1799 while_statement_to_firm((while_statement_t*) statement);
1801 case STATEMENT_DO_WHILE:
1802 do_while_statement_to_firm((do_while_statement_t*) statement);
1804 case STATEMENT_DECLARATION:
1805 declaration_statement_to_firm((declaration_statement_t*) statement);
1807 case STATEMENT_BREAK:
1808 create_jump_statement(statement, break_label);
1810 case STATEMENT_CONTINUE:
1811 create_jump_statement(statement, continue_label);
1813 case STATEMENT_SWITCH:
1814 switch_statement_to_firm((switch_statement_t*) statement);
1816 case STATEMENT_CASE_LABEL:
1817 case_label_to_firm((case_label_statement_t*) statement);
1820 for_statement_to_firm((for_statement_t*) statement);
1822 case STATEMENT_LABEL:
1823 label_to_firm((label_statement_t*) statement);
1825 case STATEMENT_GOTO:
1826 goto_to_firm((goto_statement_t*) statement);
1831 panic("Statement not implemented\n");
1834 static int get_function_n_local_vars(declaration_t *declaration)
1841 static void initialize_function_parameters(declaration_t *declaration)
1843 ir_graph *irg = current_ir_graph;
1844 ir_node *args = get_irg_args(irg);
1845 ir_node *start_block = get_irg_start_block(irg);
1848 declaration_t *parameter = declaration->context.declarations;
1849 for( ; parameter != NULL; parameter = parameter->next) {
1850 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
1852 if(parameter->address_taken) {
1853 panic("address take from parameter not implemented yet");
1856 ir_mode *mode = get_ir_mode(parameter->type);
1858 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
1861 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1862 parameter->v.value_number = next_value_number_function;
1863 ++next_value_number_function;
1865 set_value(parameter->v.value_number, proj);
1869 static void create_function(declaration_t *declaration)
1871 ir_entity *entity = get_function_entity(declaration);
1873 if(declaration->init.statement == NULL)
1876 assert(imature_blocks == NULL);
1877 imature_blocks = NEW_ARR_F(ir_node*, 0);
1879 int n_local_vars = get_function_n_local_vars(declaration);
1880 ir_graph *irg = new_ir_graph(entity, n_local_vars);
1881 ir_node *first_block = get_cur_block();
1883 next_value_number_function = 0;
1884 initialize_function_parameters(declaration);
1886 statement_to_firm(declaration->init.statement);
1888 ir_node *end_block = get_irg_end_block(irg);
1890 /* do we have a return statement yet? */
1891 if(get_cur_block() != NULL) {
1892 assert(declaration->type->type == TYPE_FUNCTION);
1893 const function_type_t* const func_type
1894 = (const function_type_t*) declaration->type;
1896 if (func_type->result_type == type_void) {
1897 ret = new_Return(get_store(), 0, NULL);
1899 ir_mode *const mode = get_ir_mode(func_type->result_type);
1901 // ยง5.1.2.2.3 main implicitly returns 0
1902 if (strcmp(declaration->symbol->string, "main") == 0) {
1903 in[0] = new_Const(mode, get_mode_null(mode));
1905 in[0] = new_Unknown(mode);
1907 ret = new_Return(get_store(), 1, in);
1909 add_immBlock_pred(end_block, ret);
1912 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
1913 mature_immBlock(imature_blocks[i]);
1915 DEL_ARR_F(imature_blocks);
1916 imature_blocks = NULL;
1918 mature_immBlock(first_block);
1919 mature_immBlock(end_block);
1921 irg_finalize_cons(irg);
1923 /* finalize the frame type */
1924 ir_type *frame_type = get_irg_frame_type(irg);
1925 int n = get_compound_n_members(frame_type);
1928 for(int i = 0; i < n; ++i) {
1929 ir_entity *entity = get_compound_member(frame_type, i);
1930 ir_type *entity_type = get_entity_type(entity);
1932 int align = get_type_alignment_bytes(entity_type);
1933 if(align > align_all)
1937 misalign = offset % align;
1941 set_entity_offset(entity, offset);
1942 offset += get_type_size_bytes(entity_type);
1944 set_type_size_bytes(frame_type, offset);
1945 set_type_alignment_bytes(frame_type, align_all);
1946 set_type_state(frame_type, layout_fixed);
1951 static void create_global_variable(declaration_t *declaration)
1953 ir_type *global_type = get_glob_type();
1954 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
1957 ir_entity *entity = declaration->v.entity;
1958 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
1959 set_entity_visibility(entity, visibility_local);
1960 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
1961 set_entity_visibility(entity, visibility_external_allocated);
1963 set_entity_visibility(entity, visibility_external_visible);
1965 current_ir_graph = get_const_code_irg();
1966 create_initializer(declaration);
1969 static void context_to_firm(context_t *context)
1971 declaration_t *declaration = context->declarations;
1972 for( ; declaration != NULL; declaration = declaration->next) {
1973 if(declaration->namespace != NAMESPACE_NORMAL)
1975 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
1976 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
1978 if(declaration->symbol == NULL)
1981 type_t *type = declaration->type;
1982 if(type->type == TYPE_FUNCTION) {
1983 create_function(declaration);
1985 create_global_variable(declaration);
1990 void translation_unit_to_firm(translation_unit_t *unit)
1992 /* remove me later TODO FIXME */
1993 (void) get_type_size;
1995 /* just to be sure */
1996 continue_label = NULL;
1998 current_switch_cond = NULL;
2000 context_to_firm(& unit->context);