9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
19 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
21 static ir_type *ir_type_const_char;
22 static ir_type *ir_type_void;
23 static ir_type *ir_type_int;
24 static ir_type *ir_type_void_ptr;
26 static type_t *type_const_char;
27 static type_t *type_void;
28 static type_t *type_int;
30 static int next_value_number_function;
31 static ir_node *continue_label;
32 static ir_node *break_label;
33 static ir_node *current_switch_cond;
35 typedef enum declaration_type_t {
36 DECLARATION_TYPE_UNKNOWN,
37 DECLARATION_TYPE_FUNCTION,
38 DECLARATION_TYPE_GLOBAL_VARIABLE,
39 DECLARATION_TYPE_LOCAL_VARIABLE,
40 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
41 DECLARATION_TYPE_COMPOUND_MEMBER
44 static ir_type *get_ir_type(type_t *type);
46 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
50 const declaration_t *declaration = & value_numbers[pos]->declaration;
52 print_warning_prefix(declaration->source_position);
53 fprintf(stderr, "variable '%s' might be used uninitialized\n",
54 declaration->symbol->string);
56 fprintf(stderr, "Some variable might be used uninitialized\n");
57 return new_r_Unknown(irg, mode);
60 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
62 const source_position_t *pos = (const source_position_t*) dbg;
65 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
69 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
71 const source_position_t *pos = (const source_position_t*) dbg;
76 return pos->input_name;
79 void init_ast2firm(void)
81 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
82 type_void = make_atomic_type(ATOMIC_TYPE_VOID, 0);
83 type_int = make_atomic_type(ATOMIC_TYPE_INT, 0);
85 ir_type_int = get_ir_type(type_int);
86 ir_type_const_char = get_ir_type(type_const_char);
87 ir_type_void = get_ir_type(type_int); /* we don't have a real void
89 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
90 ir_type_void, mode_P_data);
92 type_void->firm_type = ir_type_void;
95 void exit_ast2firm(void)
99 static unsigned unique_id = 0;
101 static ident *unique_ident(const char *tag)
105 snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id);
107 return new_id_from_str(buf);
110 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
112 switch(atomic_type->atype) {
113 case ATOMIC_TYPE_SCHAR:
114 case ATOMIC_TYPE_CHAR:
116 case ATOMIC_TYPE_UCHAR:
118 case ATOMIC_TYPE_SHORT:
120 case ATOMIC_TYPE_USHORT:
122 case ATOMIC_TYPE_LONG:
123 case ATOMIC_TYPE_INT:
125 case ATOMIC_TYPE_ULONG:
126 case ATOMIC_TYPE_UINT:
128 case ATOMIC_TYPE_LONGLONG:
130 case ATOMIC_TYPE_ULONGLONG:
132 case ATOMIC_TYPE_FLOAT:
134 case ATOMIC_TYPE_DOUBLE:
136 case ATOMIC_TYPE_LONG_DOUBLE:
138 case ATOMIC_TYPE_BOOL:
140 #ifdef PROVIDE_COMPLEX
141 case ATOMIC_TYPE_FLOAT_COMPLEX:
142 case ATOMIC_TYPE_DOUBLE_COMPLEX:
143 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
144 panic("complex lowering not implemented yet");
146 case ATOMIC_TYPE_FLOAT_IMAGINARY:
147 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
148 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
149 panic("imaginary lowering not implemented yet");
152 case ATOMIC_TYPE_VOID:
153 /* firm has no real void... */
155 case ATOMIC_TYPE_INVALID:
158 panic("Encountered unknown atomic type");
162 static unsigned get_type_size(type_t *type);
164 static unsigned get_atomic_type_size(const atomic_type_t *type)
166 switch(type->atype) {
167 case ATOMIC_TYPE_CHAR:
168 case ATOMIC_TYPE_SCHAR:
169 case ATOMIC_TYPE_UCHAR:
172 case ATOMIC_TYPE_SHORT:
173 case ATOMIC_TYPE_USHORT:
176 case ATOMIC_TYPE_BOOL:
177 case ATOMIC_TYPE_INT:
178 case ATOMIC_TYPE_UINT:
179 case ATOMIC_TYPE_LONG:
180 case ATOMIC_TYPE_ULONG:
181 case ATOMIC_TYPE_FLOAT:
184 case ATOMIC_TYPE_LONGLONG:
185 case ATOMIC_TYPE_ULONGLONG:
186 case ATOMIC_TYPE_DOUBLE:
189 case ATOMIC_TYPE_LONG_DOUBLE:
192 case ATOMIC_TYPE_VOID:
195 case ATOMIC_TYPE_INVALID:
198 panic("Trying to determine size of invalid atomic type");
201 static unsigned get_compound_type_size(compound_type_t *type)
203 ir_type *irtype = get_ir_type(&type->type);
204 return get_type_size_bytes(irtype);
207 static unsigned get_array_type_size(array_type_t *type)
209 ir_type *irtype = get_ir_type(&type->type);
210 return get_type_size_bytes(irtype);
213 static unsigned get_type_size(type_t *type)
215 type = skip_typeref(type);
219 return get_atomic_type_size((const atomic_type_t*) type);
221 return get_mode_size_bytes(mode_Is);
222 case TYPE_COMPOUND_UNION:
223 case TYPE_COMPOUND_STRUCT:
224 return get_compound_type_size((compound_type_t*) type);
226 /* just a pointer to the function */
227 return get_mode_size_bytes(mode_P_code);
229 return get_mode_size_bytes(mode_P_data);
231 return get_array_type_size((array_type_t*) type);
238 panic("Trying to determine size of invalid type");
241 static unsigned count_parameters(const function_type_t *function_type)
245 function_parameter_t *parameter = function_type->parameters;
246 for ( ; parameter != NULL; parameter = parameter->next) {
256 static ir_type *create_atomic_type(const atomic_type_t *type)
258 ir_mode *mode = get_atomic_mode(type);
259 ident *id = get_mode_ident(mode);
260 ir_type *irtype = new_type_primitive(id, mode);
265 static ir_type *create_method_type(const function_type_t *function_type)
267 type_t *result_type = function_type->result_type;
269 ident *id = unique_ident("functiontype");
270 int n_parameters = count_parameters(function_type);
271 int n_results = result_type == type_void ? 0 : 1;
272 ir_type *irtype = new_type_method(id, n_parameters, n_results);
274 if(result_type != type_void) {
275 ir_type *restype = get_ir_type(result_type);
276 set_method_res_type(irtype, 0, restype);
279 function_parameter_t *parameter = function_type->parameters;
281 for( ; parameter != NULL; parameter = parameter->next) {
282 ir_type *p_irtype = get_ir_type(parameter->type);
283 set_method_param_type(irtype, n, p_irtype);
287 if(function_type->variadic || function_type->unspecified_parameters) {
288 set_method_variadicity(irtype, variadicity_variadic);
294 static ir_type *create_pointer_type(pointer_type_t *type)
296 type_t *points_to = type->points_to;
297 ir_type *ir_points_to;
298 /* Avoid endless recursion if the points_to type contains this poiner type
299 * again (might be a struct). We therefore first create a void* pointer
300 * and then set the real points_to type
302 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
303 ir_type_void, mode_P_data);
304 type->type.firm_type = ir_type;
306 ir_points_to = get_ir_type(points_to);
307 set_pointer_points_to_type(ir_type, ir_points_to);
312 static ir_type *create_array_type(array_type_t *type)
314 type_t *element_type = type->element_type;
315 ir_type *ir_element_type = get_ir_type(element_type);
319 panic("TODO arraytpye size not implemented yet");
321 ir_type *ir_type = new_type_array(unique_ident("array"), 1, ir_element_type);
322 set_array_bounds_int(ir_type, 0, 0, n_elements);
324 size_t elemsize = get_type_size_bytes(ir_element_type);
325 int align = get_type_alignment_bytes(ir_element_type);
326 if(elemsize % align > 0) {
327 elemsize += align - (elemsize % align);
329 set_type_size_bytes(ir_type, n_elements * elemsize);
330 set_type_alignment_bytes(ir_type, align);
331 set_type_state(ir_type, layout_fixed);
336 #define INVALID_TYPE ((ir_type_ptr)-1)
338 static ir_type *create_struct_type(compound_type_t *type)
340 symbol_t *symbol = type->declaration->symbol;
343 id = unique_ident(symbol->string);
345 id = unique_ident("__anonymous_struct");
347 ir_type *ir_type = new_type_struct(id);
349 type->type.firm_type = ir_type;
353 declaration_t *entry = type->declaration->context.declarations;
354 for( ; entry != NULL; entry = entry->next) {
355 if(entry->namespace != NAMESPACE_NORMAL)
358 ident *ident = new_id_from_str(entry->symbol->string);
359 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
361 int entry_size = get_type_size_bytes(entry_ir_type);
362 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
363 int misalign = offset % entry_alignment;
366 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
367 set_entity_offset(entity, offset);
368 add_struct_member(ir_type, entity);
369 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
370 entry->v.entity = entity;
372 offset += entry_size;
373 if(entry_alignment > align_all) {
374 if(entry_alignment % align_all != 0) {
375 panic("Uneven alignments not supported yet");
377 align_all = entry_alignment;
381 int misalign = offset % align_all;
383 set_type_alignment_bytes(ir_type, align_all);
384 set_type_size_bytes(ir_type, offset);
385 set_type_state(ir_type, layout_fixed);
390 static ir_type *create_union_type(compound_type_t *type)
392 declaration_t *declaration = type->declaration;
393 symbol_t *symbol = declaration->symbol;
396 id = unique_ident(symbol->string);
398 id = unique_ident("__anonymous_union");
400 ir_type *ir_type = new_type_union(id);
402 type->type.firm_type = ir_type;
406 declaration_t *entry = declaration->context.declarations;
407 for( ; entry != NULL; entry = entry->next) {
408 if(entry->namespace != NAMESPACE_NORMAL)
411 ident *ident = new_id_from_str(entry->symbol->string);
412 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
414 int entry_size = get_type_size_bytes(entry_ir_type);
415 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
417 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
418 add_union_member(ir_type, entity);
419 set_entity_offset(entity, 0);
420 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
421 entry->v.entity = entity;
423 if(entry_size > size) {
426 if(entry_alignment > align_all) {
427 if(entry_alignment % align_all != 0) {
428 panic("Uneven alignments not supported yet");
430 align_all = entry_alignment;
434 set_type_alignment_bytes(ir_type, align_all);
435 set_type_size_bytes(ir_type, size);
436 set_type_state(ir_type, layout_fixed);
441 static ir_type *get_ir_type(type_t *type)
443 assert(type != NULL);
445 type = skip_typeref(type);
447 if(type->firm_type != NULL) {
448 assert(type->firm_type != INVALID_TYPE);
449 return type->firm_type;
452 ir_type *firm_type = NULL;
455 firm_type = create_atomic_type((atomic_type_t*) type);
458 firm_type = create_method_type((function_type_t*) type);
461 firm_type = create_pointer_type((pointer_type_t*) type);
464 firm_type = create_array_type((array_type_t*) type);
466 case TYPE_COMPOUND_STRUCT:
467 firm_type = create_struct_type((compound_type_t*) type);
469 case TYPE_COMPOUND_UNION:
470 firm_type = create_union_type((compound_type_t*) type);
473 firm_type = ir_type_int;
481 if(firm_type == NULL)
482 panic("unknown type found");
484 type->firm_type = firm_type;
488 static inline ir_mode *get_ir_mode(type_t *type)
490 ir_type *irtype = get_ir_type(type);
491 ir_mode *mode = get_type_mode(irtype);
492 assert(mode != NULL);
496 static ir_entity* get_function_entity(declaration_t *declaration)
498 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
499 return declaration->v.entity;
500 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
502 symbol_t *symbol = declaration->symbol;
503 ident *id = new_id_from_str(symbol->string);
505 ir_type *global_type = get_glob_type();
506 ir_type *ir_type_method = get_ir_type(declaration->type);
507 assert(is_Method_type(ir_type_method));
509 type_t *type = declaration->type;
510 ir_entity *entity = new_entity(global_type, id, ir_type_method);
511 set_entity_ld_ident(entity, id);
512 if(declaration->storage_class & STORAGE_CLASS_STATIC
513 || type->qualifiers & TYPE_QUALIFIER_INLINE) {
514 set_entity_visibility(entity, visibility_local);
515 } else if(declaration->init.statement != NULL) {
516 set_entity_visibility(entity, visibility_external_visible);
518 set_entity_visibility(entity, visibility_external_allocated);
521 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
522 declaration->v.entity = entity;
529 static ir_node *expression_to_firm(const expression_t *expression);
530 static ir_node *expression_to_modeb(const expression_t *expression);
532 static dbg_info *get_dbg_info(const source_position_t *pos)
534 return (dbg_info*) pos;
537 static ir_node *const_to_firm(const const_t *cnst)
539 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
540 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
543 if(mode_is_float(mode)) {
544 tv = new_tarval_from_double(cnst->v.float_value, mode);
546 tv = new_tarval_from_long(cnst->v.int_value, mode);
549 return new_d_Const(dbgi, mode, tv);
552 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
554 assert(entity != NULL);
555 union symconst_symbol sym;
556 sym.entity_p = entity;
557 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
560 static ir_node *string_literal_to_firm(const string_literal_t* literal)
562 ir_type *global_type = get_glob_type();
563 ir_type *type = new_type_array(unique_ident("strtype"), 1,
566 ident *id = unique_ident("Lstr");
567 ir_entity *entity = new_entity(global_type, id, type);
568 set_entity_ld_ident(entity, id);
569 set_entity_variability(entity, variability_constant);
571 ir_type *elem_type = ir_type_const_char;
572 ir_mode *mode = get_type_mode(elem_type);
574 const char *string = literal->value;
575 size_t slen = strlen(string) + 1;
577 set_array_lower_bound_int(type, 0, 0);
578 set_array_upper_bound_int(type, 0, slen);
579 set_type_size_bytes(type, slen);
580 set_type_state(type, layout_fixed);
582 tarval **tvs = xmalloc(slen * sizeof(tvs[0]));
583 for(size_t i = 0; i < slen; ++i) {
584 tvs[i] = new_tarval_from_long(string[i], mode);
587 set_array_entity_values(entity, tvs, slen);
590 dbg_info *dbgi = get_dbg_info(&literal->expression.source_position);
592 return create_symconst(dbgi, entity);
595 static ir_node *load_from_expression_addr(type_t *type, ir_node *addr,
598 ir_mode *mode = get_ir_mode(type);
599 ir_node *memory = get_store();
600 ir_node *load = new_d_Load(dbgi, memory, addr, mode);
601 ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
602 ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
608 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
610 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
611 declaration_t *declaration = ref->declaration;
612 type_t *type = declaration->type;
613 ir_mode *mode = get_ir_mode(type);
615 switch((declaration_type_t) declaration->declaration_type) {
616 case DECLARATION_TYPE_UNKNOWN:
618 case DECLARATION_TYPE_LOCAL_VARIABLE:
619 return get_value(declaration->v.value_number, mode);
620 case DECLARATION_TYPE_FUNCTION: {
621 return create_symconst(dbgi, declaration->v.entity);
623 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
624 ir_entity *entity = declaration->v.entity;
625 ir_node *symconst = create_symconst(dbgi, entity);
626 return load_from_expression_addr(type, symconst, dbgi);
628 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY:
629 case DECLARATION_TYPE_COMPOUND_MEMBER:
630 panic("not implemented reference type");
633 panic("reference to declaration with unknown type found");
636 static ir_node *reference_addr(const reference_expression_t *ref)
638 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
639 declaration_t *declaration = ref->declaration;
641 switch((declaration_type_t) declaration->declaration_type) {
642 case DECLARATION_TYPE_UNKNOWN:
644 case DECLARATION_TYPE_LOCAL_VARIABLE:
645 panic("local variable without entity has no address");
646 case DECLARATION_TYPE_FUNCTION: {
647 return create_symconst(dbgi, declaration->v.entity);
649 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
650 ir_entity *entity = declaration->v.entity;
651 ir_node *symconst = create_symconst(dbgi, entity);
654 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY:
655 case DECLARATION_TYPE_COMPOUND_MEMBER:
656 panic("not implemented reference type");
659 panic("reference to declaration with unknown type found");
662 static ir_node *call_expression_to_firm(const call_expression_t *call)
664 assert(get_cur_block() != NULL);
666 expression_t *function = call->function;
667 ir_node *callee = expression_to_firm(function);
669 assert(function->datatype->type == TYPE_FUNCTION);
670 function_type_t *function_type = (function_type_t*) function->datatype;
672 int n_parameters = 0;
673 call_argument_t *argument = call->arguments;
674 for( ; argument != NULL; argument = argument->next) {
678 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
679 ir_type *new_method_type = NULL;
680 if(function_type->variadic || function_type->unspecified_parameters) {
681 /* we need to construct a new method type matching the call
683 int n_res = get_method_n_ress(ir_method_type);
684 new_method_type = new_type_method(unique_ident("calltype"),
685 n_parameters, n_res);
686 set_method_calling_convention(new_method_type,
687 get_method_calling_convention(ir_method_type));
688 set_method_additional_properties(new_method_type,
689 get_method_additional_properties(ir_method_type));
691 for(int i = 0; i < n_res; ++i) {
692 set_method_res_type(new_method_type, i,
693 get_method_res_type(ir_method_type, i));
696 ir_node *in[n_parameters];
698 argument = call->arguments;
700 for( ; argument != NULL; argument = argument->next) {
701 expression_t *expression = argument->expression;
702 ir_node *arg_node = expression_to_firm(expression);
705 if(new_method_type != NULL) {
706 ir_type *irtype = get_ir_type(expression->datatype);
707 set_method_param_type(new_method_type, n, irtype);
712 assert(n == n_parameters);
714 if(new_method_type != NULL)
715 ir_method_type = new_method_type;
717 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
718 ir_node *store = get_store();
719 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
721 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
724 type_t *result_type = function_type->result_type;
725 ir_node *result = NULL;
726 if(result_type != type_void) {
727 ir_mode *mode = get_ir_mode(result_type);
728 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
729 result = new_d_Proj(dbgi, resproj, mode, 0);
735 static ir_node *expression_to_addr(const expression_t *expression);
737 static void set_value_for_expression(const expression_t *expression,
740 if(expression->type == EXPR_REFERENCE) {
741 reference_expression_t *ref = (reference_expression_t*) expression;
743 declaration_t *declaration = ref->declaration;
744 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
745 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
746 set_value(declaration->v.value_number, value);
751 dbg_info *dbgi = get_dbg_info(&expression->source_position);
752 ir_node *addr = expression_to_addr(expression);
753 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
754 ir_node *memory = get_store();
755 ir_node *store = new_d_Store(dbgi, memory, addr, value);
756 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
757 set_store(store_mem);
760 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
762 ir_mode *value_mode = get_irn_mode(value);
764 if(value_mode == dest_mode)
767 if(dest_mode == mode_b) {
768 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
769 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
770 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
774 return new_d_Conv(dbgi, value, dest_mode);
777 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
779 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
780 type_t *type = expression->expression.datatype;
781 ir_mode *mode = get_ir_mode(type);
783 if(expression->type == UNEXPR_TAKE_ADDRESS)
784 return expression_to_addr(expression->value);
786 const expression_t *value = expression->value;
787 ir_node *value_node = expression_to_firm(value);
789 switch(expression->type) {
791 return new_d_Minus(dbgi, value_node, mode);
794 case UNEXPR_BITWISE_NEGATE:
795 return new_d_Not(dbgi, value_node, mode);
797 if(get_irn_mode(value_node) != mode_b) {
798 value_node = create_conv(dbgi, value_node, mode_b);
800 value_node = new_d_Not(dbgi, value_node, mode_b);
802 value_node = create_conv(dbgi, value_node, mode);
805 case UNEXPR_DEREFERENCE:
806 return load_from_expression_addr(type, value_node, dbgi);
807 case UNEXPR_POSTFIX_INCREMENT: {
808 ir_node *one = new_Const(mode, get_mode_one(mode));
809 ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
810 set_value_for_expression(value, new_value);
813 case UNEXPR_POSTFIX_DECREMENT: {
814 ir_node *one = new_Const(mode, get_mode_one(mode));
815 ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
816 set_value_for_expression(value, new_value);
819 case UNEXPR_PREFIX_INCREMENT: {
820 ir_node *one = new_Const(mode, get_mode_one(mode));
821 ir_node *new_value = new_d_Add(dbgi, value_node, one, mode);
822 set_value_for_expression(value, new_value);
825 case UNEXPR_PREFIX_DECREMENT: {
826 ir_node *one = new_Const(mode, get_mode_one(mode));
827 ir_node *new_value = new_d_Sub(dbgi, value_node, one, mode);
828 set_value_for_expression(value, new_value);
832 return create_conv(dbgi, value_node, mode);
834 case UNEXPR_TAKE_ADDRESS:
838 panic("invalid UNEXPR type found");
841 static long get_pnc(binary_expression_type_t type)
844 case BINEXPR_EQUAL: return pn_Cmp_Eq;
845 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
846 case BINEXPR_LESS: return pn_Cmp_Lt;
847 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
848 case BINEXPR_GREATER: return pn_Cmp_Gt;
849 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
853 panic("trying to get pn_Cmp from non-comparison binexpr type");
856 static ir_node *create_lazy_op(const binary_expression_t *expression)
858 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
860 bool is_or = (expression->type == BINEXPR_LOGICAL_OR);
861 assert(is_or || expression->type == BINEXPR_LOGICAL_AND);
863 ir_node *val1 = expression_to_modeb(expression->left);
864 ir_node *cond = new_d_Cond(dbgi, val1);
865 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
866 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
868 ir_node *fallthrough_block = new_immBlock();
871 ir_node *calc_val2_block = new_immBlock();
873 add_immBlock_pred(calc_val2_block, false_proj);
875 add_immBlock_pred(calc_val2_block, true_proj);
878 mature_immBlock(calc_val2_block);
880 ir_node *val2 = expression_to_modeb(expression->right);
881 if(get_cur_block() != NULL) {
882 ir_node *jmp = new_d_Jmp(dbgi);
883 add_immBlock_pred(fallthrough_block, jmp);
889 constb = new_d_Const(dbgi, mode_b, get_tarval_b_true());
890 add_immBlock_pred(fallthrough_block, true_proj);
892 constb = new_d_Const(dbgi, mode_b, get_tarval_b_false());
893 add_immBlock_pred(fallthrough_block, false_proj);
895 mature_immBlock(fallthrough_block);
897 set_cur_block(fallthrough_block);
899 ir_node *in[2] = { val2, constb };
900 ir_node *val = new_d_Phi(dbgi, 2, in, mode_b);
905 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
906 ir_node *right, ir_mode *mode);
908 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
909 create_arithmetic_func func)
911 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
912 ir_node *left = expression_to_firm(expression->left);
913 ir_node *right = expression_to_firm(expression->right);
914 type_t *type = expression->right->datatype;
915 /* be careful with the modes, because in asithmetic assign nodes only
916 * the right operand has the mode of the arithmetic alread */
917 ir_mode *mode = get_ir_mode(type);
918 left = create_conv(dbgi, left, mode);
919 ir_node *res = func(dbgi, left, right, mode);
924 static ir_node *create_arithmetic_assign_binop(
925 const binary_expression_t *expression, create_arithmetic_func func)
927 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
928 ir_node *value = create_arithmetic_binop(expression, func);
929 type_t *type = expression->expression.datatype;
930 ir_mode *mode = get_ir_mode(type);
932 assert(type->type != TYPE_POINTER);
934 value = create_conv(dbgi, value, mode);
935 set_value_for_expression(expression->left, value);
940 static ir_node *create_add(const binary_expression_t *expression)
942 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
943 ir_node *left = expression_to_firm(expression->left);
944 ir_node *right = expression_to_firm(expression->right);
945 type_t *type = expression->expression.datatype;
946 ir_mode *mode = get_ir_mode(type);
948 expression_t *expr_left = expression->left;
949 expression_t *expr_right = expression->right;
950 type_t *type_left = skip_typeref(expr_left->datatype);
951 type_t *type_right = skip_typeref(expr_right->datatype);
953 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
954 return new_d_Add(dbgi, left, right, mode);
959 pointer_type_t *pointer_type;
960 if(type_left->type == TYPE_POINTER) {
963 pointer_type = (pointer_type_t*) type_left;
965 assert(type_right->type == TYPE_POINTER);
968 pointer_type = (pointer_type_t*) type_right;
971 type_t *points_to = pointer_type->points_to;
972 unsigned elem_size = get_type_size(points_to);
974 assert(elem_size >= 1);
976 integer = create_conv(dbgi, integer, mode_Is);
977 ir_node *cnst = new_Const_long(mode_Is, (int) elem_size);
978 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
982 ir_node *res = new_d_Add(dbgi, pointer, integer, mode);
987 static ir_node *create_sub(const binary_expression_t *expression)
989 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
990 ir_node *left = expression_to_firm(expression->left);
991 ir_node *right = expression_to_firm(expression->right);
992 type_t *type = expression->expression.datatype;
993 ir_mode *mode = get_ir_mode(type);
995 expression_t *expr_left = expression->left;
996 expression_t *expr_right = expression->right;
997 type_t *type_left = skip_typeref(expr_left->datatype);
998 type_t *type_right = skip_typeref(expr_right->datatype);
1000 if((is_type_arithmetic(type_left) && is_type_arithmetic(type_right))
1001 || (type_left->type == TYPE_POINTER
1002 && type_right->type == TYPE_POINTER)) {
1003 return new_d_Sub(dbgi, left, right, mode);
1006 assert(type_right->type == TYPE_POINTER);
1007 ir_node *pointer = left;
1008 ir_node *integer = right;
1009 pointer_type_t *pointer_type = (pointer_type_t*) type_right;
1011 type_t *points_to = pointer_type->points_to;
1012 unsigned elem_size = get_type_size(points_to);
1014 assert(elem_size >= 1);
1016 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
1017 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
1021 ir_node *res = new_d_Sub(dbgi, pointer, integer, mode);
1026 static ir_node *create_divmod(const binary_expression_t *expression)
1028 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1029 ir_node *left = expression_to_firm(expression->left);
1030 ir_node *right = expression_to_firm(expression->right);
1031 ir_node *pin = new_Pin(new_NoMem());
1032 type_t *type = expression->expression.datatype;
1033 ir_mode *mode = get_ir_mode(type);
1037 if(expression->type == BINEXPR_DIV) {
1038 if(mode_is_float(mode)) {
1039 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1040 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1042 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1043 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1046 assert(expression->type == BINEXPR_MOD);
1047 assert(!mode_is_float(mode));
1048 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1049 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1057 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1059 binary_expression_type_t type = expression->type;
1062 case BINEXPR_NOTEQUAL:
1064 case BINEXPR_LESSEQUAL:
1065 case BINEXPR_GREATER:
1066 case BINEXPR_GREATEREQUAL: {
1067 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1068 ir_node *left = expression_to_firm(expression->left);
1069 ir_node *right = expression_to_firm(expression->right);
1070 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1071 long pnc = get_pnc(type);
1072 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1075 case BINEXPR_ASSIGN: {
1076 ir_node *right = expression_to_firm(expression->right);
1077 set_value_for_expression(expression->left, right);
1081 return create_add(expression);
1083 return create_sub(expression);
1085 return create_arithmetic_binop(expression, new_d_Mul);
1086 case BINEXPR_BITWISE_AND:
1087 return create_arithmetic_binop(expression, new_d_And);
1088 case BINEXPR_BITWISE_OR:
1089 return create_arithmetic_binop(expression, new_d_Or);
1090 case BINEXPR_BITWISE_XOR:
1091 return create_arithmetic_binop(expression, new_d_Eor);
1092 case BINEXPR_SHIFTLEFT:
1093 return create_arithmetic_binop(expression, new_d_Shl);
1094 case BINEXPR_SHIFTRIGHT:
1095 return create_arithmetic_binop(expression, new_d_Shr);
1098 return create_divmod(expression);
1099 case BINEXPR_LOGICAL_AND:
1100 case BINEXPR_LOGICAL_OR:
1101 return create_lazy_op(expression);
1103 expression_to_firm(expression->left);
1104 return expression_to_firm(expression->right);
1105 case BINEXPR_ADD_ASSIGN:
1106 return create_arithmetic_assign_binop(expression, new_d_Add);
1107 case BINEXPR_SUB_ASSIGN:
1108 return create_arithmetic_assign_binop(expression, new_d_Sub);
1109 case BINEXPR_MUL_ASSIGN:
1110 return create_arithmetic_assign_binop(expression, new_d_Mul);
1111 case BINEXPR_BITWISE_AND_ASSIGN:
1112 return create_arithmetic_assign_binop(expression, new_d_And);
1113 case BINEXPR_BITWISE_OR_ASSIGN:
1114 return create_arithmetic_assign_binop(expression, new_d_Or);
1115 case BINEXPR_BITWISE_XOR_ASSIGN:
1116 return create_arithmetic_assign_binop(expression, new_d_Eor);
1117 case BINEXPR_SHIFTLEFT_ASSIGN:
1118 return create_arithmetic_assign_binop(expression, new_d_Shl);
1119 case BINEXPR_SHIFTRIGHT_ASSIGN:
1120 return create_arithmetic_assign_binop(expression, new_d_Shr);
1122 panic("TODO binexpr type");
1126 static ir_node *array_access_addr(const array_access_expression_t *expression)
1128 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1130 ir_node *base_addr = expression_to_firm(expression->array_ref);
1131 ir_node *offset = expression_to_firm(expression->index);
1132 offset = create_conv(dbgi, offset, mode_Iu);
1134 unsigned elem_size = get_type_size(expression->expression.datatype);
1135 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1136 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1138 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1143 static ir_node *array_access_to_firm(
1144 const array_access_expression_t *expression)
1147 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1148 ir_node *addr = array_access_addr(expression);
1149 type_t *type = expression->expression.datatype;
1151 return load_from_expression_addr(type, addr, dbgi);
1154 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1156 type_t *type = expression->type;
1158 type = expression->size_expression->datatype;
1159 assert(type != NULL);
1162 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1163 unsigned size = get_type_size(type);
1164 ir_node *size_node = new_Const_long(mode, size);
1169 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1171 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1173 ir_node *condition = expression_to_modeb(expression->condition);
1174 ir_node *cond = new_d_Cond(dbgi, condition);
1175 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1176 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1178 /* create the true block */
1179 ir_node *true_block = new_immBlock();
1180 add_immBlock_pred(true_block, true_proj);
1181 mature_immBlock(true_block);
1183 ir_node *true_val = expression_to_firm(expression->true_expression);
1184 ir_node *true_jmp = new_Jmp();
1186 /* create the false block */
1187 ir_node *false_block = new_immBlock();
1188 add_immBlock_pred(false_block, false_proj);
1189 mature_immBlock(false_block);
1191 ir_node *false_val = expression_to_firm(expression->false_expression);
1192 ir_node *false_jmp = new_Jmp();
1194 /* create the common block */
1195 ir_node *common_block = new_immBlock();
1196 add_immBlock_pred(common_block, true_jmp);
1197 add_immBlock_pred(common_block, false_jmp);
1198 mature_immBlock(common_block);
1200 ir_node *in[2] = { true_val, false_val };
1201 ir_mode *mode = get_irn_mode(true_val);
1202 assert(get_irn_mode(false_val) == mode);
1203 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1208 static ir_node *expression_to_addr(const expression_t *expression)
1210 switch(expression->type) {
1211 case EXPR_REFERENCE:
1212 return reference_addr((const reference_expression_t*) expression);
1213 case EXPR_ARRAY_ACCESS:
1214 return array_access_addr((const array_access_expression_t*) expression);
1218 panic("trying to get address of non-lvalue");
1221 static ir_node *_expression_to_firm(const expression_t *expression)
1223 switch(expression->type) {
1225 return const_to_firm((const const_t*) expression);
1226 case EXPR_STRING_LITERAL:
1227 return string_literal_to_firm((const string_literal_t*) expression);
1228 case EXPR_REFERENCE:
1229 return reference_expression_to_firm(
1230 (const reference_expression_t*) expression);
1232 return call_expression_to_firm((const call_expression_t*) expression);
1234 return unary_expression_to_firm((const unary_expression_t*) expression);
1236 return binary_expression_to_firm(
1237 (const binary_expression_t*) expression);
1238 case EXPR_ARRAY_ACCESS:
1239 return array_access_to_firm(
1240 (const array_access_expression_t*) expression);
1242 return sizeof_to_firm((const sizeof_expression_t*) expression);
1243 case EXPR_CONDITIONAL:
1244 return conditional_to_firm((const conditional_expression_t*)expression);
1248 panic("unsupported expression found");
1251 static ir_node *expression_to_firm(const expression_t *expression)
1253 ir_node *res = _expression_to_firm(expression);
1255 if(expression->datatype == type_void)
1258 ir_mode *mode = get_ir_mode(expression->datatype);
1259 res = create_conv(NULL, res, mode);
1263 static ir_node *expression_to_modeb(const expression_t *expression)
1265 ir_node *res = _expression_to_firm(expression);
1266 res = create_conv(NULL, res, mode_b);
1271 static void statement_to_firm(statement_t *statement);
1273 static void return_statement_to_firm(return_statement_t *statement)
1275 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1278 if(statement->return_value != NULL) {
1279 ir_node *retval = expression_to_firm(statement->return_value);
1283 ret = new_d_Return(dbgi, get_store(), 1, in);
1285 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1287 ir_node *end_block = get_irg_end_block(current_ir_graph);
1288 add_immBlock_pred(end_block, ret);
1290 set_cur_block(NULL);
1293 static void compound_statement_to_firm(compound_statement_t *compound)
1295 statement_t *statement = compound->statements;
1296 for( ; statement != NULL; statement = statement->next) {
1297 //context2firm(&statement->context);
1298 statement_to_firm(statement);
1302 static void expression_statement_to_firm(expression_statement_t *statement)
1304 expression_to_firm(statement->expression);
1307 static void if_statement_to_firm(if_statement_t *statement)
1309 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1310 ir_node *condition = expression_to_modeb(statement->condition);
1312 /* make sure we have a mode_b condition */
1313 ir_node *cond = new_d_Cond(dbgi, condition);
1314 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1315 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1317 ir_node *fallthrough_block = new_immBlock();
1319 /* the true (blocks) */
1320 ir_node *true_block = new_immBlock();
1321 add_immBlock_pred(true_block, true_proj);
1322 mature_immBlock(true_block);
1324 statement_to_firm(statement->true_statement);
1325 if(get_cur_block() != NULL) {
1326 ir_node *jmp = new_Jmp();
1327 add_immBlock_pred(fallthrough_block, jmp);
1330 /* the false (blocks) */
1331 if(statement->false_statement != NULL) {
1332 ir_node *false_block = new_immBlock();
1333 add_immBlock_pred(false_block, false_proj);
1334 mature_immBlock(false_block);
1336 statement_to_firm(statement->false_statement);
1337 if(get_cur_block() != NULL) {
1338 ir_node *jmp = new_Jmp();
1339 add_immBlock_pred(fallthrough_block, jmp);
1342 add_immBlock_pred(fallthrough_block, false_proj);
1344 mature_immBlock(fallthrough_block);
1346 set_cur_block(fallthrough_block);
1349 static void while_statement_to_firm(while_statement_t *statement)
1351 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1353 ir_node *jmp = NULL;
1354 if(get_cur_block() != NULL) {
1358 /* create the header block */
1359 ir_node *header_block = new_immBlock();
1361 add_immBlock_pred(header_block, jmp);
1364 /* create the condition */
1365 ir_node *condition = expression_to_modeb(statement->condition);
1366 ir_node *cond = new_d_Cond(dbgi, condition);
1367 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1368 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1370 /* the false block */
1371 ir_node *false_block = new_immBlock();
1372 add_immBlock_pred(false_block, false_proj);
1375 ir_node *body_block = new_immBlock();
1376 add_immBlock_pred(body_block, true_proj);
1377 mature_immBlock(body_block);
1379 ir_node *old_continue_label = continue_label;
1380 ir_node *old_break_label = break_label;
1381 continue_label = header_block;
1382 break_label = false_block;
1384 statement_to_firm(statement->body);
1386 assert(continue_label == header_block);
1387 assert(break_label == false_block);
1388 continue_label = old_continue_label;
1389 break_label = old_break_label;
1391 if(get_cur_block() != NULL) {
1392 ir_node *jmp = new_Jmp();
1393 add_immBlock_pred(header_block, jmp);
1396 mature_immBlock(header_block);
1397 mature_immBlock(false_block);
1399 set_cur_block(false_block);
1402 static void do_while_statement_to_firm(do_while_statement_t *statement)
1404 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1406 ir_node *jmp = NULL;
1407 if(get_cur_block() != NULL) {
1411 /* create the header block */
1412 ir_node *header_block = new_immBlock();
1414 /* the false block */
1415 ir_node *false_block = new_immBlock();
1418 ir_node *body_block = new_immBlock();
1420 add_immBlock_pred(body_block, jmp);
1423 ir_node *old_continue_label = continue_label;
1424 ir_node *old_break_label = break_label;
1425 continue_label = header_block;
1426 break_label = false_block;
1428 statement_to_firm(statement->body);
1430 assert(continue_label == header_block);
1431 assert(break_label == false_block);
1432 continue_label = old_continue_label;
1433 break_label = old_break_label;
1435 if(get_cur_block() == NULL) {
1436 mature_immBlock(header_block);
1437 mature_immBlock(body_block);
1441 ir_node *body_jmp = new_Jmp();
1442 add_immBlock_pred(header_block, body_jmp);
1443 mature_immBlock(header_block);
1445 /* create the condition */
1446 ir_node *condition = expression_to_modeb(statement->condition);
1447 ir_node *cond = new_d_Cond(dbgi, condition);
1448 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1449 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1451 add_immBlock_pred(body_block, true_proj);
1452 mature_immBlock(body_block);
1454 add_immBlock_pred(false_block, false_proj);
1455 mature_immBlock(false_block);
1457 set_cur_block(false_block);
1460 static void for_statement_to_firm(for_statement_t *statement)
1462 dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position);
1464 ir_node *jmp = NULL;
1465 if (get_cur_block() != NULL) {
1466 if(statement->initialisation != NULL) {
1467 expression_to_firm(statement->initialisation);
1472 /* create the step block */
1473 ir_node *const step_block = new_immBlock();
1474 expression_to_firm(statement->step);
1475 ir_node *const step_jmp = new_Jmp();
1477 /* create the header block */
1478 ir_node *const header_block = new_immBlock();
1480 add_immBlock_pred(header_block, jmp);
1482 add_immBlock_pred(header_block, step_jmp);
1484 /* create the condition */
1485 ir_node *const condition = expression_to_modeb(statement->condition);
1486 ir_node *const cond = new_d_Cond(dbgi, condition);
1487 ir_node *const true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1488 ir_node *const false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1490 /* the false block */
1491 ir_node *const false_block = new_immBlock();
1492 add_immBlock_pred(false_block, false_proj);
1495 ir_node *const body_block = new_immBlock();
1496 add_immBlock_pred(body_block, true_proj);
1497 mature_immBlock(body_block);
1499 ir_node *const old_continue_label = continue_label;
1500 ir_node *const old_break_label = break_label;
1501 continue_label = step_block;
1502 break_label = false_block;
1504 statement_to_firm(statement->body);
1506 assert(continue_label == step_block);
1507 assert(break_label == false_block);
1508 continue_label = old_continue_label;
1509 break_label = old_break_label;
1511 if (get_cur_block() != NULL) {
1512 ir_node *const jmp = new_Jmp();
1513 add_immBlock_pred(step_block, jmp);
1516 mature_immBlock(step_block);
1517 mature_immBlock(header_block);
1518 mature_immBlock(false_block);
1520 set_cur_block(false_block);
1523 static void create_declaration_entity(declaration_t *declaration,
1524 declaration_type_t declaration_type,
1525 ir_type *parent_type)
1527 ident *id = new_id_from_str(declaration->symbol->string);
1528 ir_type *irtype = get_ir_type(declaration->type);
1529 ir_entity *entity = new_entity(parent_type, id, irtype);
1530 set_entity_ld_ident(entity, id);
1532 declaration->declaration_type = declaration_type;
1533 declaration->v.entity = entity;
1534 set_entity_variability(entity, variability_uninitialized);
1535 /* TODO: visibility? */
1538 static void create_initializer(declaration_t *declaration)
1540 initializer_t *initializer = declaration->init.initializer;
1541 if(initializer == NULL)
1544 if(initializer->type == INITIALIZER_VALUE) {
1545 assert(initializer->designator == NULL);
1546 assert(initializer->next == NULL);
1547 ir_node *init_node = expression_to_firm(initializer->v.value);
1549 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1550 set_value(declaration->v.value_number, init_node);
1552 ir_entity *entity = declaration->v.entity;
1553 ir_mode *mode = get_ir_mode(declaration->type);
1554 init_node = create_conv(NULL, init_node, mode);
1556 set_entity_variability(entity, variability_initialized);
1557 set_atomic_ent_value(entity, init_node);
1560 assert(initializer->type == INITIALIZER_LIST);
1561 panic("list initializer not supported yet");
1565 static void create_local_variable(declaration_t *declaration)
1567 bool needs_entity = declaration->address_taken;
1569 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
1572 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
1573 create_declaration_entity(declaration,
1574 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
1577 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1578 declaration->v.value_number = next_value_number_function;
1579 ++next_value_number_function;
1582 create_initializer(declaration);
1585 static void declaration_statement_to_firm(declaration_statement_t *statement)
1587 declaration_t *declaration = statement->declarations_begin;
1588 declaration_t *end = statement->declarations_end->next;
1589 for( ; declaration != end; declaration = declaration->next) {
1590 type_t *type = declaration->type;
1592 switch(declaration->storage_class) {
1593 case STORAGE_CLASS_TYPEDEF:
1595 case STORAGE_CLASS_STATIC:
1596 panic("static local vars not implemented yet");
1597 case STORAGE_CLASS_ENUM_ENTRY:
1598 panic("enum entry declaration in local block found");
1599 case STORAGE_CLASS_EXTERN:
1600 panic("extern declaration in local block found");
1601 case STORAGE_CLASS_NONE:
1602 case STORAGE_CLASS_AUTO:
1603 case STORAGE_CLASS_REGISTER:
1604 if(type->type == TYPE_FUNCTION) {
1605 panic("nested functions not supported yet");
1607 create_local_variable(declaration);
1611 panic("invalid storage class found");
1615 static void create_jump_statement(const statement_t *statement,
1616 ir_node *target_block)
1618 dbg_info *dbgi = get_dbg_info(&statement->source_position);
1619 ir_node *jump = new_d_Jmp(dbgi);
1620 add_immBlock_pred(target_block, jump);
1622 set_cur_block(NULL);
1625 static void switch_statement_to_firm(const switch_statement_t *statement)
1627 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1629 ir_node *expression = expression_to_firm(statement->expression);
1630 ir_node *cond = new_d_Cond(dbgi, expression);
1631 ir_node *break_block = new_immBlock();
1633 set_cur_block(NULL);
1635 ir_node *old_switch_cond = current_switch_cond;
1636 ir_node *old_break_label = break_label;
1637 current_switch_cond = cond;
1638 break_label = break_block;
1640 statement_to_firm(statement->body);
1642 if(get_cur_block() != NULL) {
1643 ir_node *jmp = new_Jmp();
1644 add_immBlock_pred(break_block, jmp);
1647 assert(current_switch_cond == cond);
1648 assert(break_label == break_block);
1649 current_switch_cond = old_switch_cond;
1650 break_label = old_break_label;
1652 mature_immBlock(break_block);
1653 set_cur_block(break_block);
1656 static void case_label_to_firm(const case_label_statement_t *statement)
1658 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1660 /* let's create a node and hope firm constant folding creates a Const
1663 set_cur_block(get_nodes_block(current_switch_cond));
1664 if(statement->expression) {
1665 ir_node *cnst = expression_to_firm(statement->expression);
1666 if(!is_Const(cnst)) {
1667 panic("couldn't fold constant for case label");
1669 tarval *tv = get_Const_tarval(cnst);
1670 if(!mode_is_int(get_tarval_mode(tv))) {
1671 panic("case label not an integer");
1674 long pn = get_tarval_long(tv);
1675 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
1676 /* oops someone detected our cheating... */
1677 panic("magic default pn used");
1679 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
1681 proj = new_d_defaultProj(dbgi, current_switch_cond,
1682 MAGIC_DEFAULT_PN_NUMBER);
1685 ir_node *block = new_immBlock();
1686 add_immBlock_pred(block, proj);
1687 mature_immBlock(block);
1690 static void statement_to_firm(statement_t *statement)
1692 switch(statement->type) {
1693 case STATEMENT_COMPOUND:
1694 compound_statement_to_firm((compound_statement_t*) statement);
1696 case STATEMENT_RETURN:
1697 return_statement_to_firm((return_statement_t*) statement);
1699 case STATEMENT_EXPRESSION:
1700 expression_statement_to_firm((expression_statement_t*) statement);
1703 if_statement_to_firm((if_statement_t*) statement);
1705 case STATEMENT_WHILE:
1706 while_statement_to_firm((while_statement_t*) statement);
1708 case STATEMENT_DO_WHILE:
1709 do_while_statement_to_firm((do_while_statement_t*) statement);
1711 case STATEMENT_DECLARATION:
1712 declaration_statement_to_firm((declaration_statement_t*) statement);
1714 case STATEMENT_BREAK:
1715 create_jump_statement(statement, break_label);
1717 case STATEMENT_CONTINUE:
1718 create_jump_statement(statement, continue_label);
1720 case STATEMENT_SWITCH:
1721 switch_statement_to_firm((switch_statement_t*) statement);
1723 case STATEMENT_CASE_LABEL:
1724 case_label_to_firm((case_label_statement_t*) statement);
1727 for_statement_to_firm((for_statement_t*) statement);
1732 panic("Statement not implemented\n");
1735 static int get_function_n_local_vars(declaration_t *declaration)
1742 static void initialize_function_parameters(declaration_t *declaration)
1744 ir_graph *irg = current_ir_graph;
1745 ir_node *args = get_irg_args(irg);
1746 ir_node *start_block = get_irg_start_block(irg);
1749 declaration_t *parameter = declaration->context.declarations;
1750 for( ; parameter != NULL; parameter = parameter->next) {
1751 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
1753 if(parameter->address_taken) {
1754 panic("address take from parameter not implemented yet");
1757 ir_mode *mode = get_ir_mode(parameter->type);
1759 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
1762 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1763 parameter->v.value_number = next_value_number_function;
1764 ++next_value_number_function;
1766 set_value(parameter->v.value_number, proj);
1770 static void create_function(declaration_t *declaration)
1772 ir_entity *entity = get_function_entity(declaration);
1774 if(declaration->init.statement == NULL)
1777 int n_local_vars = get_function_n_local_vars(declaration);
1778 ir_graph *irg = new_ir_graph(entity, n_local_vars);
1779 ir_node *first_block = get_cur_block();
1781 next_value_number_function = 0;
1782 initialize_function_parameters(declaration);
1784 statement_to_firm(declaration->init.statement);
1786 ir_node *end_block = get_irg_end_block(irg);
1788 /* do we have a return statement yet? */
1789 if(get_cur_block() != NULL) {
1790 assert(declaration->type->type == TYPE_FUNCTION);
1791 const function_type_t* const func_type = (const function_type_t*)declaration->type;
1793 if (func_type->result_type == type_void) {
1794 ret = new_Return(get_store(), 0, NULL);
1796 ir_mode *const mode = get_ir_mode(func_type->result_type);
1798 // ยง5.1.2.2.3 main implicitly returns 0
1799 if (strcmp(declaration->symbol->string, "main") == 0) {
1800 in[0] = new_Const(mode, get_mode_null(mode));
1802 in[0] = new_Unknown(mode);
1804 ret = new_Return(get_store(), 1, in);
1806 add_immBlock_pred(end_block, ret);
1809 mature_immBlock(first_block);
1810 mature_immBlock(end_block);
1812 irg_finalize_cons(irg);
1814 /* finalize the frame type */
1815 ir_type *frame_type = get_irg_frame_type(irg);
1816 int n = get_compound_n_members(frame_type);
1819 for(int i = 0; i < n; ++i) {
1820 ir_entity *entity = get_compound_member(frame_type, i);
1821 ir_type *entity_type = get_entity_type(entity);
1823 int align = get_type_alignment_bytes(entity_type);
1824 if(align > align_all)
1828 misalign = offset % align;
1832 set_entity_offset(entity, offset);
1833 offset += get_type_size_bytes(entity_type);
1835 set_type_size_bytes(frame_type, offset);
1836 set_type_alignment_bytes(frame_type, align_all);
1837 set_type_state(frame_type, layout_fixed);
1842 static void create_global_variable(declaration_t *declaration)
1844 ir_type *global_type = get_glob_type();
1845 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
1848 ir_entity *entity = declaration->v.entity;
1849 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
1850 set_entity_visibility(entity, visibility_local);
1851 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
1852 set_entity_visibility(entity, visibility_external_allocated);
1854 set_entity_visibility(entity, visibility_external_visible);
1856 current_ir_graph = get_const_code_irg();
1857 create_initializer(declaration);
1860 static void context_to_firm(context_t *context)
1862 declaration_t *declaration = context->declarations;
1863 for( ; declaration != NULL; declaration = declaration->next) {
1864 if(declaration->namespace != NAMESPACE_NORMAL)
1866 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
1867 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
1870 type_t *type = declaration->type;
1871 if(type->type == TYPE_FUNCTION) {
1872 create_function(declaration);
1874 create_global_variable(declaration);
1879 void translation_unit_to_firm(translation_unit_t *unit)
1881 /* remove me later TODO FIXME */
1882 (void) get_type_size;
1884 /* just to be sure */
1885 continue_label = NULL;
1887 current_switch_cond = NULL;
1889 context_to_firm(& unit->context);