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->expression.datatype;
915 ir_mode *mode = get_ir_mode(type);
916 ir_node *res = func(dbgi, left, right, mode);
921 static ir_node *create_add(const binary_expression_t *expression)
923 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
924 ir_node *left = expression_to_firm(expression->left);
925 ir_node *right = expression_to_firm(expression->right);
926 type_t *type = expression->expression.datatype;
927 ir_mode *mode = get_ir_mode(type);
929 expression_t *expr_left = expression->left;
930 expression_t *expr_right = expression->right;
931 type_t *type_left = skip_typeref(expr_left->datatype);
932 type_t *type_right = skip_typeref(expr_right->datatype);
934 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
935 return new_d_Add(dbgi, left, right, mode);
940 pointer_type_t *pointer_type;
941 if(type_left->type == TYPE_POINTER) {
944 pointer_type = (pointer_type_t*) type_left;
946 assert(type_right->type == TYPE_POINTER);
949 pointer_type = (pointer_type_t*) type_right;
952 type_t *points_to = pointer_type->points_to;
953 unsigned elem_size = get_type_size(points_to);
955 assert(elem_size >= 1);
957 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
958 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
962 ir_node *res = new_d_Add(dbgi, pointer, integer, mode);
967 static ir_node *create_sub(const binary_expression_t *expression)
969 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
970 ir_node *left = expression_to_firm(expression->left);
971 ir_node *right = expression_to_firm(expression->right);
972 type_t *type = expression->expression.datatype;
973 ir_mode *mode = get_ir_mode(type);
975 expression_t *expr_left = expression->left;
976 expression_t *expr_right = expression->right;
977 type_t *type_left = skip_typeref(expr_left->datatype);
978 type_t *type_right = skip_typeref(expr_right->datatype);
980 if((is_type_arithmetic(type_left) && is_type_arithmetic(type_right))
981 || (type_left->type == TYPE_POINTER
982 && type_right->type == TYPE_POINTER)) {
983 return new_d_Sub(dbgi, left, right, mode);
986 assert(type_right->type == TYPE_POINTER);
987 ir_node *pointer = left;
988 ir_node *integer = right;
989 pointer_type_t *pointer_type = (pointer_type_t*) type_right;
991 type_t *points_to = pointer_type->points_to;
992 unsigned elem_size = get_type_size(points_to);
994 assert(elem_size >= 1);
996 ir_node *cnst = new_Const_long(mode_Iu, elem_size);
997 ir_node *mul = new_d_Mul(dbgi, integer, cnst, mode_Iu);
1001 ir_node *res = new_d_Sub(dbgi, pointer, integer, mode);
1008 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1010 binary_expression_type_t type = expression->type;
1013 case BINEXPR_NOTEQUAL:
1015 case BINEXPR_LESSEQUAL:
1016 case BINEXPR_GREATER:
1017 case BINEXPR_GREATEREQUAL: {
1018 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1019 ir_node *left = expression_to_firm(expression->left);
1020 ir_node *right = expression_to_firm(expression->right);
1021 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1022 long pnc = get_pnc(type);
1023 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1026 case BINEXPR_ASSIGN: {
1027 ir_node *right = expression_to_firm(expression->right);
1028 set_value_for_expression(expression->left, right);
1032 return create_add(expression);
1034 return create_sub(expression);
1036 return create_arithmetic_binop(expression, new_d_Mul);
1037 case BINEXPR_BITWISE_AND:
1038 return create_arithmetic_binop(expression, new_d_And);
1039 case BINEXPR_BITWISE_OR:
1040 return create_arithmetic_binop(expression, new_d_Or);
1041 case BINEXPR_BITWISE_XOR:
1042 return create_arithmetic_binop(expression, new_d_Eor);
1043 case BINEXPR_SHIFTLEFT:
1044 return create_arithmetic_binop(expression, new_d_Shl);
1045 case BINEXPR_SHIFTRIGHT:
1046 return create_arithmetic_binop(expression, new_d_Shr);
1047 case BINEXPR_LOGICAL_AND:
1048 case BINEXPR_LOGICAL_OR:
1049 return create_lazy_op(expression);
1051 panic("TODO binexpr type");
1055 static ir_node *array_access_addr(const array_access_expression_t *expression)
1057 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1059 ir_node *base_addr = expression_to_firm(expression->array_ref);
1060 ir_node *offset = expression_to_firm(expression->index);
1061 offset = create_conv(dbgi, offset, mode_Iu);
1063 unsigned elem_size = get_type_size(expression->expression.datatype);
1064 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1065 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1067 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1072 static ir_node *array_access_to_firm(
1073 const array_access_expression_t *expression)
1076 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1077 ir_node *addr = array_access_addr(expression);
1078 type_t *type = expression->expression.datatype;
1080 return load_from_expression_addr(type, addr, dbgi);
1083 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1085 type_t *type = expression->type;
1087 type = expression->size_expression->datatype;
1088 assert(type != NULL);
1091 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1092 unsigned size = get_type_size(type);
1093 ir_node *size_node = new_Const_long(mode, size);
1098 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1100 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1102 ir_node *condition = expression_to_modeb(expression->condition);
1103 ir_node *cond = new_d_Cond(dbgi, condition);
1104 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1105 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1107 /* create the true block */
1108 ir_node *true_block = new_immBlock();
1109 add_immBlock_pred(true_block, true_proj);
1110 mature_immBlock(true_block);
1112 ir_node *true_val = expression_to_firm(expression->true_expression);
1113 ir_node *true_jmp = new_Jmp();
1115 /* create the false block */
1116 ir_node *false_block = new_immBlock();
1117 add_immBlock_pred(false_block, false_proj);
1118 mature_immBlock(false_block);
1120 ir_node *false_val = expression_to_firm(expression->false_expression);
1121 ir_node *false_jmp = new_Jmp();
1123 /* create the common block */
1124 ir_node *common_block = new_immBlock();
1125 add_immBlock_pred(common_block, true_jmp);
1126 add_immBlock_pred(common_block, false_jmp);
1127 mature_immBlock(common_block);
1129 ir_node *in[2] = { true_val, false_val };
1130 ir_mode *mode = get_irn_mode(true_val);
1131 assert(get_irn_mode(false_val) == mode);
1132 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1137 static ir_node *expression_to_addr(const expression_t *expression)
1139 switch(expression->type) {
1140 case EXPR_REFERENCE:
1141 return reference_addr((const reference_expression_t*) expression);
1142 case EXPR_ARRAY_ACCESS:
1143 return array_access_addr((const array_access_expression_t*) expression);
1147 panic("trying to get address of non-lvalue");
1150 static ir_node *_expression_to_firm(const expression_t *expression)
1152 switch(expression->type) {
1154 return const_to_firm((const const_t*) expression);
1155 case EXPR_STRING_LITERAL:
1156 return string_literal_to_firm((const string_literal_t*) expression);
1157 case EXPR_REFERENCE:
1158 return reference_expression_to_firm(
1159 (const reference_expression_t*) expression);
1161 return call_expression_to_firm((const call_expression_t*) expression);
1163 return unary_expression_to_firm((const unary_expression_t*) expression);
1165 return binary_expression_to_firm(
1166 (const binary_expression_t*) expression);
1167 case EXPR_ARRAY_ACCESS:
1168 return array_access_to_firm(
1169 (const array_access_expression_t*) expression);
1171 return sizeof_to_firm((const sizeof_expression_t*) expression);
1172 case EXPR_CONDITIONAL:
1173 return conditional_to_firm((const conditional_expression_t*)expression);
1177 panic("unsupported expression found");
1180 static ir_node *expression_to_firm(const expression_t *expression)
1182 ir_node *res = _expression_to_firm(expression);
1184 if(expression->datatype == type_void)
1187 ir_mode *mode = get_ir_mode(expression->datatype);
1188 res = create_conv(NULL, res, mode);
1192 static ir_node *expression_to_modeb(const expression_t *expression)
1194 ir_node *res = _expression_to_firm(expression);
1195 res = create_conv(NULL, res, mode_b);
1200 static void statement_to_firm(statement_t *statement);
1202 static void return_statement_to_firm(return_statement_t *statement)
1204 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1207 if(statement->return_value != NULL) {
1208 ir_node *retval = expression_to_firm(statement->return_value);
1212 ret = new_d_Return(dbgi, get_store(), 1, in);
1214 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1216 ir_node *end_block = get_irg_end_block(current_ir_graph);
1217 add_immBlock_pred(end_block, ret);
1219 set_cur_block(NULL);
1222 static void compound_statement_to_firm(compound_statement_t *compound)
1224 statement_t *statement = compound->statements;
1225 for( ; statement != NULL; statement = statement->next) {
1226 //context2firm(&statement->context);
1227 statement_to_firm(statement);
1231 static void expression_statement_to_firm(expression_statement_t *statement)
1233 expression_to_firm(statement->expression);
1236 static void if_statement_to_firm(if_statement_t *statement)
1238 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1239 ir_node *condition = expression_to_modeb(statement->condition);
1241 /* make sure we have a mode_b condition */
1242 ir_node *cond = new_d_Cond(dbgi, condition);
1243 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1244 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1246 ir_node *fallthrough_block = new_immBlock();
1248 /* the true (blocks) */
1249 ir_node *true_block = new_immBlock();
1250 add_immBlock_pred(true_block, true_proj);
1251 mature_immBlock(true_block);
1253 statement_to_firm(statement->true_statement);
1254 if(get_cur_block() != NULL) {
1255 ir_node *jmp = new_Jmp();
1256 add_immBlock_pred(fallthrough_block, jmp);
1259 /* the false (blocks) */
1260 if(statement->false_statement != NULL) {
1261 ir_node *false_block = new_immBlock();
1262 add_immBlock_pred(false_block, false_proj);
1263 mature_immBlock(false_block);
1265 statement_to_firm(statement->false_statement);
1266 if(get_cur_block() != NULL) {
1267 ir_node *jmp = new_Jmp();
1268 add_immBlock_pred(fallthrough_block, jmp);
1271 add_immBlock_pred(fallthrough_block, false_proj);
1273 mature_immBlock(fallthrough_block);
1275 set_cur_block(fallthrough_block);
1278 static void while_statement_to_firm(while_statement_t *statement)
1280 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1282 ir_node *jmp = NULL;
1283 if(get_cur_block() != NULL) {
1287 /* create the header block */
1288 ir_node *header_block = new_immBlock();
1290 add_immBlock_pred(header_block, jmp);
1293 /* create the condition */
1294 ir_node *condition = expression_to_modeb(statement->condition);
1295 ir_node *cond = new_d_Cond(dbgi, condition);
1296 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1297 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1299 /* the false block */
1300 ir_node *false_block = new_immBlock();
1301 add_immBlock_pred(false_block, false_proj);
1304 ir_node *body_block = new_immBlock();
1305 add_immBlock_pred(body_block, true_proj);
1306 mature_immBlock(body_block);
1308 ir_node *old_continue_label = continue_label;
1309 ir_node *old_break_label = break_label;
1310 continue_label = header_block;
1311 break_label = false_block;
1313 statement_to_firm(statement->body);
1315 assert(continue_label == header_block);
1316 assert(break_label == false_block);
1317 continue_label = old_continue_label;
1318 break_label = old_break_label;
1320 if(get_cur_block() != NULL) {
1321 ir_node *jmp = new_Jmp();
1322 add_immBlock_pred(header_block, jmp);
1325 mature_immBlock(header_block);
1326 mature_immBlock(false_block);
1328 set_cur_block(false_block);
1331 static void do_while_statement_to_firm(do_while_statement_t *statement)
1333 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1335 ir_node *jmp = NULL;
1336 if(get_cur_block() != NULL) {
1340 /* create the header block */
1341 ir_node *header_block = new_immBlock();
1343 /* the false block */
1344 ir_node *false_block = new_immBlock();
1347 ir_node *body_block = new_immBlock();
1349 add_immBlock_pred(body_block, jmp);
1352 ir_node *old_continue_label = continue_label;
1353 ir_node *old_break_label = break_label;
1354 continue_label = header_block;
1355 break_label = false_block;
1357 statement_to_firm(statement->body);
1359 assert(continue_label == header_block);
1360 assert(break_label == false_block);
1361 continue_label = old_continue_label;
1362 break_label = old_break_label;
1364 if(get_cur_block() == NULL) {
1365 mature_immBlock(header_block);
1366 mature_immBlock(body_block);
1370 ir_node *body_jmp = new_Jmp();
1371 add_immBlock_pred(header_block, body_jmp);
1372 mature_immBlock(header_block);
1374 /* create the condition */
1375 ir_node *condition = expression_to_modeb(statement->condition);
1376 ir_node *cond = new_d_Cond(dbgi, condition);
1377 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1378 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1380 add_immBlock_pred(body_block, true_proj);
1381 mature_immBlock(body_block);
1383 add_immBlock_pred(false_block, false_proj);
1384 mature_immBlock(false_block);
1386 set_cur_block(false_block);
1389 static void for_statement_to_firm(for_statement_t *statement)
1391 dbg_info *const dbgi = get_dbg_info(&statement->statement.source_position);
1393 ir_node *jmp = NULL;
1394 if (get_cur_block() != NULL) {
1395 if(statement->initialisation != NULL) {
1396 expression_to_firm(statement->initialisation);
1401 /* create the step block */
1402 ir_node *const step_block = new_immBlock();
1403 expression_to_firm(statement->step);
1404 ir_node *const step_jmp = new_Jmp();
1406 /* create the header block */
1407 ir_node *const header_block = new_immBlock();
1409 add_immBlock_pred(header_block, jmp);
1411 add_immBlock_pred(header_block, step_jmp);
1413 /* create the condition */
1414 ir_node *const condition = expression_to_modeb(statement->condition);
1415 ir_node *const cond = new_d_Cond(dbgi, condition);
1416 ir_node *const true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1417 ir_node *const false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1419 /* the false block */
1420 ir_node *const false_block = new_immBlock();
1421 add_immBlock_pred(false_block, false_proj);
1424 ir_node *const body_block = new_immBlock();
1425 add_immBlock_pred(body_block, true_proj);
1426 mature_immBlock(body_block);
1428 ir_node *const old_continue_label = continue_label;
1429 ir_node *const old_break_label = break_label;
1430 continue_label = step_block;
1431 break_label = false_block;
1433 statement_to_firm(statement->body);
1435 assert(continue_label == step_block);
1436 assert(break_label == false_block);
1437 continue_label = old_continue_label;
1438 break_label = old_break_label;
1440 if (get_cur_block() != NULL) {
1441 ir_node *const jmp = new_Jmp();
1442 add_immBlock_pred(step_block, jmp);
1445 mature_immBlock(step_block);
1446 mature_immBlock(header_block);
1447 mature_immBlock(false_block);
1449 set_cur_block(false_block);
1452 static void create_declaration_entity(declaration_t *declaration,
1453 declaration_type_t declaration_type,
1454 ir_type *parent_type)
1456 ident *id = new_id_from_str(declaration->symbol->string);
1457 ir_type *irtype = get_ir_type(declaration->type);
1458 ir_entity *entity = new_entity(parent_type, id, irtype);
1459 set_entity_ld_ident(entity, id);
1461 declaration->declaration_type = declaration_type;
1462 declaration->v.entity = entity;
1463 set_entity_variability(entity, variability_uninitialized);
1464 /* TODO: visibility? */
1467 static void create_initializer(declaration_t *declaration)
1469 initializer_t *initializer = declaration->init.initializer;
1470 if(initializer == NULL)
1473 if(initializer->type == INITIALIZER_VALUE) {
1474 assert(initializer->designator == NULL);
1475 assert(initializer->next == NULL);
1476 ir_node *init_node = expression_to_firm(initializer->v.value);
1478 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
1479 set_value(declaration->v.value_number, init_node);
1481 panic("initializer not completely implemented yet");
1484 assert(initializer->type == INITIALIZER_LIST);
1485 panic("list initializer not supported yet");
1489 static void create_local_variable(declaration_t *declaration)
1491 bool needs_entity = declaration->address_taken;
1493 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
1496 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
1497 create_declaration_entity(declaration,
1498 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
1501 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1502 declaration->v.value_number = next_value_number_function;
1503 ++next_value_number_function;
1506 create_initializer(declaration);
1509 static void declaration_statement_to_firm(declaration_statement_t *statement)
1511 declaration_t *declaration = statement->declarations_begin;
1512 declaration_t *end = statement->declarations_end->next;
1513 for( ; declaration != end; declaration = declaration->next) {
1514 type_t *type = declaration->type;
1516 switch(declaration->storage_class) {
1517 case STORAGE_CLASS_TYPEDEF:
1519 case STORAGE_CLASS_STATIC:
1520 panic("static local vars not implemented yet");
1521 case STORAGE_CLASS_ENUM_ENTRY:
1522 panic("enum entry declaration in local block found");
1523 case STORAGE_CLASS_EXTERN:
1524 panic("extern declaration in local block found");
1525 case STORAGE_CLASS_NONE:
1526 case STORAGE_CLASS_AUTO:
1527 case STORAGE_CLASS_REGISTER:
1528 if(type->type == TYPE_FUNCTION) {
1529 panic("nested functions not supported yet");
1531 create_local_variable(declaration);
1535 panic("invalid storage class found");
1539 static void create_jump_statement(const statement_t *statement,
1540 ir_node *target_block)
1542 dbg_info *dbgi = get_dbg_info(&statement->source_position);
1543 ir_node *jump = new_d_Jmp(dbgi);
1544 add_immBlock_pred(target_block, jump);
1546 set_cur_block(NULL);
1549 static void switch_statement_to_firm(const switch_statement_t *statement)
1551 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1553 ir_node *expression = expression_to_firm(statement->expression);
1554 ir_node *cond = new_d_Cond(dbgi, expression);
1555 ir_node *break_block = new_immBlock();
1557 set_cur_block(NULL);
1559 ir_node *old_switch_cond = current_switch_cond;
1560 ir_node *old_break_label = break_label;
1561 current_switch_cond = cond;
1562 break_label = break_block;
1564 statement_to_firm(statement->body);
1566 if(get_cur_block() != NULL) {
1567 ir_node *jmp = new_Jmp();
1568 add_immBlock_pred(break_block, jmp);
1571 assert(current_switch_cond == cond);
1572 assert(break_label == break_block);
1573 current_switch_cond = old_switch_cond;
1574 break_label = old_break_label;
1576 mature_immBlock(break_block);
1577 set_cur_block(break_block);
1580 static void case_label_to_firm(const case_label_statement_t *statement)
1582 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1584 /* let's create a node and hope firm constant folding creates a Const
1587 set_cur_block(get_nodes_block(current_switch_cond));
1588 if(statement->expression) {
1589 ir_node *cnst = expression_to_firm(statement->expression);
1590 if(!is_Const(cnst)) {
1591 panic("couldn't fold constant for case label");
1593 tarval *tv = get_Const_tarval(cnst);
1594 if(!mode_is_int(get_tarval_mode(tv))) {
1595 panic("case label not an integer");
1598 long pn = get_tarval_long(tv);
1599 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
1600 /* oops someone detected our cheating... */
1601 panic("magic default pn used");
1603 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
1605 proj = new_d_defaultProj(dbgi, current_switch_cond,
1606 MAGIC_DEFAULT_PN_NUMBER);
1609 ir_node *block = new_immBlock();
1610 add_immBlock_pred(block, proj);
1611 mature_immBlock(block);
1614 static void statement_to_firm(statement_t *statement)
1616 switch(statement->type) {
1617 case STATEMENT_COMPOUND:
1618 compound_statement_to_firm((compound_statement_t*) statement);
1620 case STATEMENT_RETURN:
1621 return_statement_to_firm((return_statement_t*) statement);
1623 case STATEMENT_EXPRESSION:
1624 expression_statement_to_firm((expression_statement_t*) statement);
1627 if_statement_to_firm((if_statement_t*) statement);
1629 case STATEMENT_WHILE:
1630 while_statement_to_firm((while_statement_t*) statement);
1632 case STATEMENT_DO_WHILE:
1633 do_while_statement_to_firm((do_while_statement_t*) statement);
1635 case STATEMENT_DECLARATION:
1636 declaration_statement_to_firm((declaration_statement_t*) statement);
1638 case STATEMENT_BREAK:
1639 create_jump_statement(statement, break_label);
1641 case STATEMENT_CONTINUE:
1642 create_jump_statement(statement, continue_label);
1644 case STATEMENT_SWITCH:
1645 switch_statement_to_firm((switch_statement_t*) statement);
1647 case STATEMENT_CASE_LABEL:
1648 case_label_to_firm((case_label_statement_t*) statement);
1651 for_statement_to_firm((for_statement_t*) statement);
1656 panic("Statement not implemented\n");
1659 static int get_function_n_local_vars(declaration_t *declaration)
1666 static void initialize_function_parameters(declaration_t *declaration)
1668 ir_graph *irg = current_ir_graph;
1669 ir_node *args = get_irg_args(irg);
1670 ir_node *start_block = get_irg_start_block(irg);
1673 declaration_t *parameter = declaration->context.declarations;
1674 for( ; parameter != NULL; parameter = parameter->next) {
1675 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
1677 if(parameter->address_taken) {
1678 panic("address take from parameter not implemented yet");
1681 ir_mode *mode = get_ir_mode(parameter->type);
1683 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
1686 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
1687 parameter->v.value_number = next_value_number_function;
1688 ++next_value_number_function;
1690 set_value(parameter->v.value_number, proj);
1694 static void create_function(declaration_t *declaration)
1696 ir_entity *entity = get_function_entity(declaration);
1698 if(declaration->init.statement == NULL)
1701 int n_local_vars = get_function_n_local_vars(declaration);
1702 ir_graph *irg = new_ir_graph(entity, n_local_vars);
1703 ir_node *first_block = get_cur_block();
1705 next_value_number_function = 0;
1706 initialize_function_parameters(declaration);
1708 statement_to_firm(declaration->init.statement);
1710 ir_node *end_block = get_irg_end_block(irg);
1712 /* do we have a return statement yet? */
1713 if(get_cur_block() != NULL) {
1714 assert(declaration->type->type == TYPE_FUNCTION);
1715 const function_type_t* const func_type = (const function_type_t*)declaration->type;
1717 if (func_type->result_type == type_void) {
1718 ret = new_Return(get_store(), 0, NULL);
1720 ir_mode *const mode = get_ir_mode(func_type->result_type);
1722 // ยง5.1.2.2.3 main implicitly returns 0
1723 if (strcmp(declaration->symbol->string, "main") == 0) {
1724 in[0] = new_Const(mode, get_mode_null(mode));
1726 in[0] = new_Unknown(mode);
1728 ret = new_Return(get_store(), 1, in);
1730 add_immBlock_pred(end_block, ret);
1733 mature_immBlock(first_block);
1734 mature_immBlock(end_block);
1736 irg_finalize_cons(irg);
1738 /* finalize the frame type */
1739 ir_type *frame_type = get_irg_frame_type(irg);
1740 int n = get_compound_n_members(frame_type);
1743 for(int i = 0; i < n; ++i) {
1744 ir_entity *entity = get_compound_member(frame_type, i);
1745 ir_type *entity_type = get_entity_type(entity);
1747 int align = get_type_alignment_bytes(entity_type);
1748 if(align > align_all)
1752 misalign = offset % align;
1756 set_entity_offset(entity, offset);
1757 offset += get_type_size_bytes(entity_type);
1759 set_type_size_bytes(frame_type, offset);
1760 set_type_alignment_bytes(frame_type, align_all);
1761 set_type_state(frame_type, layout_fixed);
1766 static void create_global_variable(declaration_t *declaration)
1768 ir_type *global_type = get_glob_type();
1769 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
1772 ir_entity *entity = declaration->v.entity;
1773 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
1774 set_entity_visibility(entity, visibility_local);
1775 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
1776 set_entity_visibility(entity, visibility_external_allocated);
1778 set_entity_visibility(entity, visibility_external_visible);
1782 static void context_to_firm(context_t *context)
1784 declaration_t *declaration = context->declarations;
1785 for( ; declaration != NULL; declaration = declaration->next) {
1786 if(declaration->namespace != NAMESPACE_NORMAL)
1788 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
1789 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
1792 type_t *type = declaration->type;
1793 if(type->type == TYPE_FUNCTION) {
1794 create_function(declaration);
1796 create_global_variable(declaration);
1801 void translation_unit_to_firm(translation_unit_t *unit)
1803 /* remove me later TODO FIXME */
1804 (void) get_type_size;
1806 /* just to be sure */
1807 continue_label = NULL;
1809 current_switch_cond = NULL;
1811 context_to_firm(& unit->context);