9 #include <libfirm/firm.h>
10 #include <libfirm/adt/obst.h>
14 #include "adt/error.h"
15 #include "adt/array.h"
20 #define MAGIC_DEFAULT_PN_NUMBER (long) -314159265
22 static ir_type *ir_type_const_char;
23 static ir_type *ir_type_void;
24 static ir_type *ir_type_int;
25 static ir_type *ir_type_void_ptr;
27 static type_t *type_const_char;
28 static type_t *type_void;
29 static type_t *type_int;
31 static symbol_t *symbol_alloca;
33 static int next_value_number_function;
34 static ir_node *continue_label;
35 static ir_node *break_label;
36 static ir_node *current_switch_cond;
37 static bool saw_default_label;
38 static ir_node **imature_blocks;
40 static const declaration_t *current_function_decl;
41 static ir_node *current_function_name;
43 typedef enum declaration_type_t {
44 DECLARATION_TYPE_UNKNOWN,
45 DECLARATION_TYPE_FUNCTION,
46 DECLARATION_TYPE_GLOBAL_VARIABLE,
47 DECLARATION_TYPE_LOCAL_VARIABLE,
48 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
49 DECLARATION_TYPE_COMPOUND_MEMBER,
50 DECLARATION_TYPE_LABEL_BLOCK,
53 static ir_type *get_ir_type(type_t *type);
55 ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
59 const declaration_t *declaration = & value_numbers[pos]->declaration;
61 print_warning_prefix(declaration->source_position);
62 fprintf(stderr, "variable '%s' might be used uninitialized\n",
63 declaration->symbol->string);
65 fprintf(stderr, "Some variable might be used uninitialized\n");
66 return new_r_Unknown(irg, mode);
69 unsigned dbg_snprint(char *buf, unsigned len, const dbg_info *dbg)
71 const source_position_t *pos = (const source_position_t*) dbg;
74 return (unsigned) snprintf(buf, len, "%s:%u", pos->input_name,
78 const char *retrieve_dbg(const dbg_info *dbg, unsigned *line)
80 const source_position_t *pos = (const source_position_t*) dbg;
85 return pos->input_name;
88 void init_ast2firm(void)
90 type_const_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_CONST);
91 type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE);
92 type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE);
94 ir_type_int = get_ir_type(type_int);
95 ir_type_const_char = get_ir_type(type_const_char);
96 ir_type_void = get_ir_type(type_int); /* we don't have a real void
98 ir_type_void_ptr = new_type_pointer(new_id_from_str("void_ptr"),
99 ir_type_void, mode_P_data);
101 type_void->firm_type = ir_type_void;
103 symbol_alloca = symbol_table_insert("__builtin_alloca");
106 void exit_ast2firm(void)
110 static unsigned unique_id = 0;
112 static ident *unique_ident(const char *tag)
116 snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id);
118 return new_id_from_str(buf);
121 static ir_mode *get_atomic_mode(const atomic_type_t* atomic_type)
123 switch(atomic_type->atype) {
124 case ATOMIC_TYPE_SCHAR:
125 case ATOMIC_TYPE_CHAR:
127 case ATOMIC_TYPE_UCHAR:
129 case ATOMIC_TYPE_SHORT:
131 case ATOMIC_TYPE_USHORT:
133 case ATOMIC_TYPE_LONG:
134 case ATOMIC_TYPE_INT:
136 case ATOMIC_TYPE_ULONG:
137 case ATOMIC_TYPE_UINT:
139 case ATOMIC_TYPE_LONGLONG:
141 case ATOMIC_TYPE_ULONGLONG:
143 case ATOMIC_TYPE_FLOAT:
145 case ATOMIC_TYPE_DOUBLE:
147 case ATOMIC_TYPE_LONG_DOUBLE:
149 case ATOMIC_TYPE_BOOL:
151 #ifdef PROVIDE_COMPLEX
152 case ATOMIC_TYPE_FLOAT_COMPLEX:
153 case ATOMIC_TYPE_DOUBLE_COMPLEX:
154 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
155 panic("complex lowering not implemented yet");
157 case ATOMIC_TYPE_FLOAT_IMAGINARY:
158 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
159 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
160 panic("imaginary lowering not implemented yet");
163 case ATOMIC_TYPE_VOID:
164 /* firm has no real void... */
166 case ATOMIC_TYPE_INVALID:
169 panic("Encountered unknown atomic type");
173 static unsigned get_type_size(type_t *type);
175 static unsigned get_atomic_type_size(const atomic_type_t *type)
177 switch(type->atype) {
178 case ATOMIC_TYPE_CHAR:
179 case ATOMIC_TYPE_SCHAR:
180 case ATOMIC_TYPE_UCHAR:
183 case ATOMIC_TYPE_SHORT:
184 case ATOMIC_TYPE_USHORT:
187 case ATOMIC_TYPE_BOOL:
188 case ATOMIC_TYPE_INT:
189 case ATOMIC_TYPE_UINT:
190 case ATOMIC_TYPE_LONG:
191 case ATOMIC_TYPE_ULONG:
192 case ATOMIC_TYPE_FLOAT:
195 case ATOMIC_TYPE_LONGLONG:
196 case ATOMIC_TYPE_ULONGLONG:
197 case ATOMIC_TYPE_DOUBLE:
200 case ATOMIC_TYPE_LONG_DOUBLE:
203 case ATOMIC_TYPE_VOID:
206 case ATOMIC_TYPE_INVALID:
209 panic("Trying to determine size of invalid atomic type");
212 static unsigned get_compound_type_size(compound_type_t *type)
214 ir_type *irtype = get_ir_type(&type->type);
215 return get_type_size_bytes(irtype);
218 static unsigned get_array_type_size(array_type_t *type)
220 ir_type *irtype = get_ir_type(&type->type);
221 return get_type_size_bytes(irtype);
224 static unsigned get_type_size(type_t *type)
226 type = skip_typeref(type);
230 return get_atomic_type_size((const atomic_type_t*) type);
232 return get_mode_size_bytes(mode_Is);
233 case TYPE_COMPOUND_UNION:
234 case TYPE_COMPOUND_STRUCT:
235 return get_compound_type_size((compound_type_t*) type);
237 /* just a pointer to the function */
238 return get_mode_size_bytes(mode_P_code);
240 return get_mode_size_bytes(mode_P_data);
242 return get_array_type_size((array_type_t*) type);
249 panic("Trying to determine size of invalid type");
252 static unsigned count_parameters(const function_type_t *function_type)
256 function_parameter_t *parameter = function_type->parameters;
257 for ( ; parameter != NULL; parameter = parameter->next) {
267 static long fold_constant(const expression_t *expression);
269 static ir_type *create_atomic_type(const atomic_type_t *type)
271 ir_mode *mode = get_atomic_mode(type);
272 ident *id = get_mode_ident(mode);
273 ir_type *irtype = new_type_primitive(id, mode);
278 static ir_type *create_method_type(const function_type_t *function_type)
280 type_t *result_type = function_type->result_type;
282 ident *id = unique_ident("functiontype");
283 int n_parameters = count_parameters(function_type);
284 int n_results = result_type == type_void ? 0 : 1;
285 ir_type *irtype = new_type_method(id, n_parameters, n_results);
287 if(result_type != type_void) {
288 ir_type *restype = get_ir_type(result_type);
289 set_method_res_type(irtype, 0, restype);
292 function_parameter_t *parameter = function_type->parameters;
294 for( ; parameter != NULL; parameter = parameter->next) {
295 ir_type *p_irtype = get_ir_type(parameter->type);
296 set_method_param_type(irtype, n, p_irtype);
300 if(function_type->variadic || function_type->unspecified_parameters) {
301 set_method_variadicity(irtype, variadicity_variadic);
307 static ir_type *create_pointer_type(pointer_type_t *type)
309 type_t *points_to = type->points_to;
310 ir_type *ir_points_to;
311 /* Avoid endless recursion if the points_to type contains this poiner type
312 * again (might be a struct). We therefore first create a void* pointer
313 * and then set the real points_to type
315 ir_type *ir_type = new_type_pointer(unique_ident("pointer"),
316 ir_type_void, mode_P_data);
317 type->type.firm_type = ir_type;
319 ir_points_to = get_ir_type(points_to);
320 set_pointer_points_to_type(ir_type, ir_points_to);
325 static ir_type *create_array_type(array_type_t *type)
327 type_t *element_type = type->element_type;
328 ir_type *ir_element_type = get_ir_type(element_type);
330 ident *id = unique_ident("array");
331 ir_type *ir_type = new_type_array(id, 1, ir_element_type);
333 if(type->size != NULL) {
334 int n_elements = fold_constant(type->size);
336 set_array_bounds_int(ir_type, 0, 0, n_elements);
338 size_t elemsize = get_type_size_bytes(ir_element_type);
339 int align = get_type_alignment_bytes(ir_element_type);
340 if(elemsize % align > 0) {
341 elemsize += align - (elemsize % align);
343 set_type_size_bytes(ir_type, n_elements * elemsize);
344 set_type_alignment_bytes(ir_type, align);
345 set_type_state(ir_type, layout_fixed);
351 #define INVALID_TYPE ((ir_type_ptr)-1)
353 static ir_type *create_struct_type(compound_type_t *type)
355 symbol_t *symbol = type->declaration->symbol;
358 id = unique_ident(symbol->string);
360 id = unique_ident("__anonymous_struct");
362 ir_type *ir_type = new_type_struct(id);
364 type->type.firm_type = ir_type;
368 declaration_t *entry = type->declaration->context.declarations;
369 for( ; entry != NULL; entry = entry->next) {
370 if(entry->namespc != NAMESPACE_NORMAL)
373 ident *ident = new_id_from_str(entry->symbol->string);
374 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
376 int entry_size = get_type_size_bytes(entry_ir_type);
377 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
378 int misalign = offset % entry_alignment;
380 offset += entry_alignment - misalign;
382 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
383 set_entity_offset(entity, offset);
384 add_struct_member(ir_type, entity);
385 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
386 entry->v.entity = entity;
388 offset += entry_size;
389 if(entry_alignment > align_all) {
390 if(entry_alignment % align_all != 0) {
391 panic("Uneven alignments not supported yet");
393 align_all = entry_alignment;
397 int misalign = offset % align_all;
399 set_type_alignment_bytes(ir_type, align_all);
400 set_type_size_bytes(ir_type, offset);
401 set_type_state(ir_type, layout_fixed);
406 static ir_type *create_union_type(compound_type_t *type)
408 declaration_t *declaration = type->declaration;
409 symbol_t *symbol = declaration->symbol;
412 id = unique_ident(symbol->string);
414 id = unique_ident("__anonymous_union");
416 ir_type *ir_type = new_type_union(id);
418 type->type.firm_type = ir_type;
422 declaration_t *entry = declaration->context.declarations;
423 for( ; entry != NULL; entry = entry->next) {
424 if(entry->namespc != NAMESPACE_NORMAL)
427 ident *ident = new_id_from_str(entry->symbol->string);
428 ir_type_ptr entry_ir_type = get_ir_type(entry->type);
430 int entry_size = get_type_size_bytes(entry_ir_type);
431 int entry_alignment = get_type_alignment_bytes(entry_ir_type);
433 ir_entity *entity = new_entity(ir_type, ident, entry_ir_type);
434 add_union_member(ir_type, entity);
435 set_entity_offset(entity, 0);
436 entry->declaration_type = DECLARATION_TYPE_COMPOUND_MEMBER;
437 entry->v.entity = entity;
439 if(entry_size > size) {
442 if(entry_alignment > align_all) {
443 if(entry_alignment % align_all != 0) {
444 panic("Uneven alignments not supported yet");
446 align_all = entry_alignment;
450 set_type_alignment_bytes(ir_type, align_all);
451 set_type_size_bytes(ir_type, size);
452 set_type_state(ir_type, layout_fixed);
457 static ir_type *get_ir_type(type_t *type)
459 assert(type != NULL);
461 type = skip_typeref(type);
463 if(type->firm_type != NULL) {
464 assert(type->firm_type != INVALID_TYPE);
465 return type->firm_type;
468 ir_type *firm_type = NULL;
471 firm_type = create_atomic_type((atomic_type_t*) type);
474 firm_type = create_method_type((function_type_t*) type);
477 firm_type = create_pointer_type((pointer_type_t*) type);
480 firm_type = create_array_type((array_type_t*) type);
482 case TYPE_COMPOUND_STRUCT:
483 firm_type = create_struct_type((compound_type_t*) type);
485 case TYPE_COMPOUND_UNION:
486 firm_type = create_union_type((compound_type_t*) type);
489 firm_type = ir_type_int;
497 if(firm_type == NULL)
498 panic("unknown type found");
500 type->firm_type = firm_type;
504 static inline ir_mode *get_ir_mode(type_t *type)
506 ir_type *irtype = get_ir_type(type);
508 /* firm doesn't report a mode for arrays somehow... */
509 if(is_Array_type(irtype)) {
513 ir_mode *mode = get_type_mode(irtype);
514 assert(mode != NULL);
518 static ir_entity* get_function_entity(declaration_t *declaration)
520 if(declaration->declaration_type == DECLARATION_TYPE_FUNCTION)
521 return declaration->v.entity;
522 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
524 symbol_t *symbol = declaration->symbol;
525 ident *id = new_id_from_str(symbol->string);
527 ir_type *global_type = get_glob_type();
528 ir_type *ir_type_method = get_ir_type(declaration->type);
529 assert(is_Method_type(ir_type_method));
531 ir_entity *entity = new_entity(global_type, id, ir_type_method);
532 set_entity_ld_ident(entity, id);
533 if(declaration->storage_class == STORAGE_CLASS_STATIC
534 || declaration->is_inline) {
535 set_entity_visibility(entity, visibility_local);
536 } else if(declaration->init.statement != NULL) {
537 set_entity_visibility(entity, visibility_external_visible);
539 set_entity_visibility(entity, visibility_external_allocated);
542 declaration->declaration_type = DECLARATION_TYPE_FUNCTION;
543 declaration->v.entity = entity;
550 static ir_node *expression_to_firm(const expression_t *expression);
552 static dbg_info *get_dbg_info(const source_position_t *pos)
554 return (dbg_info*) pos;
557 static ir_node *const_to_firm(const const_t *cnst)
559 dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position);
560 ir_mode *mode = get_ir_mode(cnst->expression.datatype);
565 if(mode_is_float(mode)) {
566 tv = new_tarval_from_double(cnst->v.float_value, mode);
568 if(mode_is_signed(mode)) {
569 len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value);
571 len = snprintf(buf, sizeof(buf), "%llu", cnst->v.int_value);
573 tv = new_tarval_from_str(buf, len, mode);
576 return new_d_Const(dbgi, mode, tv);
579 static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity)
581 assert(entity != NULL);
582 union symconst_symbol sym;
583 sym.entity_p = entity;
584 return new_d_SymConst(dbgi, sym, symconst_addr_ent);
587 static ir_node *string_to_firm(const source_position_t *const src_pos,
588 const char *const id_prefix,
589 const char *const string)
591 ir_type *const global_type = get_glob_type();
592 ir_type *const type = new_type_array(unique_ident("strtype"), 1,
595 ident *const id = unique_ident(id_prefix);
596 ir_entity *const entity = new_entity(global_type, id, type);
597 set_entity_ld_ident(entity, id);
598 set_entity_variability(entity, variability_constant);
600 ir_type *const elem_type = ir_type_const_char;
601 ir_mode *const mode = get_type_mode(elem_type);
603 const size_t slen = strlen(string) + 1;
605 set_array_lower_bound_int(type, 0, 0);
606 set_array_upper_bound_int(type, 0, slen);
607 set_type_size_bytes(type, slen);
608 set_type_state(type, layout_fixed);
610 tarval **const tvs = xmalloc(slen * sizeof(tvs[0]));
611 for(size_t i = 0; i < slen; ++i) {
612 tvs[i] = new_tarval_from_long(string[i], mode);
615 set_array_entity_values(entity, tvs, slen);
618 dbg_info *const dbgi = get_dbg_info(src_pos);
620 return create_symconst(dbgi, entity);
623 static ir_node *string_literal_to_firm(const string_literal_t* literal)
625 return string_to_firm(&literal->expression.source_position, "Lstr",
629 static ir_node *deref_address(type_t *const type, ir_node *const addr,
630 dbg_info *const dbgi)
632 switch (type->type) {
634 case TYPE_COMPOUND_STRUCT:
635 case TYPE_COMPOUND_UNION:
639 ir_mode *const mode = get_ir_mode(type);
640 ir_node *const memory = get_store();
641 ir_node *const load = new_d_Load(dbgi, memory, addr, mode);
642 ir_node *const load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
643 ir_node *const load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
650 static ir_node *reference_expression_to_firm(const reference_expression_t *ref)
652 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
653 declaration_t *declaration = ref->declaration;
654 type_t *type = skip_typeref(declaration->type);
656 switch((declaration_type_t) declaration->declaration_type) {
657 case DECLARATION_TYPE_UNKNOWN:
659 case DECLARATION_TYPE_LOCAL_VARIABLE: {
660 ir_mode *mode = get_ir_mode(type);
661 return get_value(declaration->v.value_number, mode);
663 case DECLARATION_TYPE_FUNCTION: {
664 return create_symconst(dbgi, declaration->v.entity);
666 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
667 ir_entity *entity = declaration->v.entity;
668 ir_node *symconst = create_symconst(dbgi, entity);
669 return deref_address(type, symconst, dbgi);
671 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
672 ir_entity *entity = declaration->v.entity;
673 ir_node *frame = get_irg_frame(current_ir_graph);
674 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
675 return deref_address(type, sel, dbgi);
678 case DECLARATION_TYPE_COMPOUND_MEMBER:
679 case DECLARATION_TYPE_LABEL_BLOCK:
680 panic("not implemented reference type");
683 panic("reference to declaration with unknown type found");
686 static ir_node *reference_addr(const reference_expression_t *ref)
688 dbg_info *dbgi = get_dbg_info(&ref->expression.source_position);
689 declaration_t *declaration = ref->declaration;
691 switch((declaration_type_t) declaration->declaration_type) {
692 case DECLARATION_TYPE_UNKNOWN:
694 case DECLARATION_TYPE_LOCAL_VARIABLE:
695 panic("local variable without entity has no address");
696 case DECLARATION_TYPE_FUNCTION: {
697 return create_symconst(dbgi, declaration->v.entity);
699 case DECLARATION_TYPE_GLOBAL_VARIABLE: {
700 ir_entity *entity = declaration->v.entity;
701 ir_node *symconst = create_symconst(dbgi, entity);
704 case DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY: {
705 ir_entity *entity = declaration->v.entity;
706 ir_node *frame = get_irg_frame(current_ir_graph);
707 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
711 case DECLARATION_TYPE_COMPOUND_MEMBER:
712 case DECLARATION_TYPE_LABEL_BLOCK:
713 panic("not implemented reference type");
716 panic("reference to declaration with unknown type found");
719 static ir_node *process_builtin_call(const call_expression_t *call)
721 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
723 assert(call->function->type == EXPR_BUILTIN_SYMBOL);
724 builtin_symbol_expression_t *builtin
725 = (builtin_symbol_expression_t*) call->function;
726 symbol_t *symbol = builtin->symbol;
728 if(symbol == symbol_alloca) {
729 if(call->arguments == NULL || call->arguments->next != NULL) {
730 panic("invalid number of parameters on __builtin_alloca");
732 expression_t *argument = call->arguments->expression;
733 ir_node *size = expression_to_firm(argument);
735 ir_node *store = get_store();
736 ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
738 ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
740 ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res);
744 panic("Unsupported builtin found\n");
748 static ir_node *call_expression_to_firm(const call_expression_t *call)
750 assert(get_cur_block() != NULL);
752 expression_t *function = call->function;
753 if(function->type == EXPR_BUILTIN_SYMBOL) {
754 return process_builtin_call(call);
756 ir_node *callee = expression_to_firm(function);
758 function_type_t *function_type;
759 if (function->datatype->type == TYPE_POINTER) {
760 pointer_type_t *const ptr_type = (pointer_type_t*)function->datatype;
761 assert(ptr_type->points_to->type == TYPE_FUNCTION);
762 function_type = (function_type_t*)ptr_type->points_to;
764 assert(function->datatype->type == TYPE_FUNCTION);
765 function_type = (function_type_t*)function->datatype;
768 int n_parameters = 0;
769 call_argument_t *argument = call->arguments;
770 for( ; argument != NULL; argument = argument->next) {
774 ir_type *ir_method_type = get_ir_type((type_t*) function_type);
775 ir_type *new_method_type = NULL;
776 if(function_type->variadic || function_type->unspecified_parameters) {
777 /* we need to construct a new method type matching the call
779 int n_res = get_method_n_ress(ir_method_type);
780 new_method_type = new_type_method(unique_ident("calltype"),
781 n_parameters, n_res);
782 set_method_calling_convention(new_method_type,
783 get_method_calling_convention(ir_method_type));
784 set_method_additional_properties(new_method_type,
785 get_method_additional_properties(ir_method_type));
787 for(int i = 0; i < n_res; ++i) {
788 set_method_res_type(new_method_type, i,
789 get_method_res_type(ir_method_type, i));
792 ir_node *in[n_parameters];
794 argument = call->arguments;
796 for( ; argument != NULL; argument = argument->next) {
797 expression_t *expression = argument->expression;
798 ir_node *arg_node = expression_to_firm(expression);
801 if(new_method_type != NULL) {
802 ir_type *irtype = get_ir_type(expression->datatype);
803 set_method_param_type(new_method_type, n, irtype);
808 assert(n == n_parameters);
810 if(new_method_type != NULL)
811 ir_method_type = new_method_type;
813 dbg_info *dbgi = get_dbg_info(&call->expression.source_position);
814 ir_node *store = get_store();
815 ir_node *node = new_d_Call(dbgi, store, callee, n_parameters, in,
817 ir_node *mem = new_d_Proj(dbgi, node, mode_M, pn_Call_M_regular);
820 type_t *result_type = function_type->result_type;
821 ir_node *result = NULL;
822 if(result_type != type_void) {
823 ir_mode *mode = get_ir_mode(result_type);
824 ir_node *resproj = new_d_Proj(dbgi, node, mode_T, pn_Call_T_result);
825 result = new_d_Proj(dbgi, resproj, mode, 0);
831 static ir_node *expression_to_addr(const expression_t *expression);
832 static void create_condition_evaluation(const expression_t *expression,
834 ir_node *false_block);
836 static void set_value_for_expression(const expression_t *expression,
839 if(expression->type == EXPR_REFERENCE) {
840 reference_expression_t *ref = (reference_expression_t*) expression;
842 declaration_t *declaration = ref->declaration;
843 assert(declaration->declaration_type != DECLARATION_TYPE_UNKNOWN);
844 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
845 set_value(declaration->v.value_number, value);
850 dbg_info *dbgi = get_dbg_info(&expression->source_position);
851 ir_node *addr = expression_to_addr(expression);
852 assert(get_irn_mode(value) == get_ir_mode(expression->datatype));
853 ir_node *memory = get_store();
854 ir_node *store = new_d_Store(dbgi, memory, addr, value);
855 ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
856 set_store(store_mem);
859 static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
861 ir_mode *value_mode = get_irn_mode(value);
863 if (value_mode == dest_mode || is_Bad(value))
866 if(dest_mode == mode_b) {
867 ir_node *zero = new_Const(value_mode, get_mode_null(value_mode));
868 ir_node *cmp = new_d_Cmp(dbgi, value, zero);
869 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pn_Cmp_Lg);
873 return new_d_Conv(dbgi, value, dest_mode);
876 static ir_node *create_incdec(const unary_expression_t *expression)
878 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
879 type_t *type = expression->expression.datatype;
880 ir_mode *mode = get_ir_mode(type);
881 expression_t *value = expression->value;
883 ir_node *value_node = expression_to_firm(value);
886 if(type->type == TYPE_POINTER) {
887 pointer_type_t *pointer_type = (pointer_type_t*) type;
888 unsigned elem_size = get_type_size(pointer_type->points_to);
889 offset = new_Const_long(mode_Is, elem_size);
891 assert(is_type_arithmetic(type));
892 offset = new_Const(mode, get_mode_one(mode));
896 switch(expression->type) {
897 case UNEXPR_POSTFIX_INCREMENT: {
898 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
899 set_value_for_expression(value, new_value);
902 case UNEXPR_POSTFIX_DECREMENT: {
903 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
904 set_value_for_expression(value, new_value);
907 case UNEXPR_PREFIX_INCREMENT: {
908 ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode);
909 set_value_for_expression(value, new_value);
912 case UNEXPR_PREFIX_DECREMENT: {
913 ir_node *new_value = new_d_Sub(dbgi, value_node, offset, mode);
914 set_value_for_expression(value, new_value);
918 panic("no incdec expr in create_incdec");
924 static ir_node *unary_expression_to_firm(const unary_expression_t *expression)
926 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
927 type_t *type = expression->expression.datatype;
929 if(expression->type == UNEXPR_TAKE_ADDRESS)
930 return expression_to_addr(expression->value);
932 const expression_t *value = expression->value;
933 ir_node *value_node = expression_to_firm(value);
935 switch(expression->type) {
937 return new_d_Minus(dbgi, value_node, get_ir_mode(type));
940 case UNEXPR_BITWISE_NEGATE:
941 return new_d_Not(dbgi, value_node, get_ir_mode(type));
943 if(get_irn_mode(value_node) != mode_b) {
944 value_node = create_conv(dbgi, value_node, mode_b);
946 value_node = new_d_Not(dbgi, value_node, mode_b);
947 ir_mode *const mode = get_ir_mode(type);
949 value_node = create_conv(dbgi, value_node, mode);
953 case UNEXPR_DEREFERENCE:
954 return deref_address(type, value_node, dbgi);
955 case UNEXPR_POSTFIX_INCREMENT:
956 case UNEXPR_POSTFIX_DECREMENT:
957 case UNEXPR_PREFIX_INCREMENT:
958 case UNEXPR_PREFIX_DECREMENT:
959 return create_incdec(expression);
961 return create_conv(dbgi, value_node, get_ir_mode(type));
963 case UNEXPR_TAKE_ADDRESS:
967 panic("invalid UNEXPR type found");
970 static long get_pnc(binary_expression_type_t type)
973 case BINEXPR_EQUAL: return pn_Cmp_Eq;
974 case BINEXPR_NOTEQUAL: return pn_Cmp_Lg;
975 case BINEXPR_LESS: return pn_Cmp_Lt;
976 case BINEXPR_LESSEQUAL: return pn_Cmp_Le;
977 case BINEXPR_GREATER: return pn_Cmp_Gt;
978 case BINEXPR_GREATEREQUAL: return pn_Cmp_Ge;
982 panic("trying to get pn_Cmp from non-comparison binexpr type");
985 static ir_node *create_lazy_op(const binary_expression_t *expression)
987 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
988 type_t *type = expression->expression.datatype;
989 ir_mode *mode = get_ir_mode(type);
991 ir_node *cur_block = get_cur_block();
993 ir_node *one_block = new_immBlock();
994 ir_node *one = new_Const(mode, get_mode_one(mode));
995 ir_node *jmp_one = new_d_Jmp(dbgi);
997 ir_node *zero_block = new_immBlock();
998 ir_node *zero = new_Const(mode, get_mode_null(mode));
999 ir_node *jmp_zero = new_d_Jmp(dbgi);
1001 set_cur_block(cur_block);
1002 create_condition_evaluation((const expression_t*) expression,
1003 one_block, zero_block);
1004 mature_immBlock(one_block);
1005 mature_immBlock(zero_block);
1007 ir_node *common_block = new_immBlock();
1008 add_immBlock_pred(common_block, jmp_one);
1009 add_immBlock_pred(common_block, jmp_zero);
1010 mature_immBlock(common_block);
1012 ir_node *in[2] = { one, zero };
1013 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1018 typedef ir_node * (*create_arithmetic_func)(dbg_info *dbgi, ir_node *left,
1019 ir_node *right, ir_mode *mode);
1021 static ir_node *create_arithmetic_binop(const binary_expression_t *expression,
1022 create_arithmetic_func func)
1024 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1025 ir_node *left = expression_to_firm(expression->left);
1026 ir_node *right = expression_to_firm(expression->right);
1027 type_t *type = expression->right->datatype;
1028 /* be careful with the modes, because in arithmetic assign nodes only
1029 * the right operand has the mode of the arithmetic already */
1030 ir_mode *mode = get_ir_mode(type);
1031 left = create_conv(dbgi, left, mode);
1032 ir_node *res = func(dbgi, left, right, mode);
1037 static ir_node *pointer_arithmetic(ir_node *const pointer,
1040 dbg_info *const dbgi,
1041 const create_arithmetic_func func)
1043 pointer_type_t *const pointer_type = (pointer_type_t*)type;
1044 type_t *const points_to = pointer_type->points_to;
1045 const unsigned elem_size = get_type_size(points_to);
1047 assert(elem_size >= 1);
1048 if (elem_size > 1) {
1049 integer = create_conv(dbgi, integer, mode_Is);
1050 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1051 ir_node *const mul = new_d_Mul(dbgi, integer, cnst, mode_Is);
1055 ir_mode *const mode = get_ir_mode(type);
1056 return func(dbgi, pointer, integer, mode);
1059 static ir_node *create_arithmetic_assign_binop(
1060 const binary_expression_t *expression, create_arithmetic_func func)
1062 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1063 type_t *const type = expression->expression.datatype;
1066 if (type->type == TYPE_POINTER) {
1067 ir_node *const pointer = expression_to_firm(expression->left);
1068 ir_node * integer = expression_to_firm(expression->right);
1069 value = pointer_arithmetic(pointer, integer, type, dbgi, func);
1071 value = create_arithmetic_binop(expression, func);
1074 ir_mode *const mode = get_ir_mode(type);
1075 value = create_conv(dbgi, value, mode);
1076 set_value_for_expression(expression->left, value);
1081 static ir_node *create_add(const binary_expression_t *expression)
1083 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1084 ir_node *left = expression_to_firm(expression->left);
1085 ir_node *right = expression_to_firm(expression->right);
1086 type_t *type = expression->expression.datatype;
1088 expression_t *expr_left = expression->left;
1089 expression_t *expr_right = expression->right;
1090 type_t *type_left = skip_typeref(expr_left->datatype);
1091 type_t *type_right = skip_typeref(expr_right->datatype);
1093 if(is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1094 ir_mode *const mode = get_ir_mode(type);
1095 return new_d_Add(dbgi, left, right, mode);
1098 if (type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1099 return pointer_arithmetic(left, right, type, dbgi, new_d_Add);
1101 assert(type_right->type == TYPE_POINTER || type_right->type == TYPE_ARRAY);
1102 return pointer_arithmetic(right, left, type, dbgi, new_d_Add);
1106 static ir_node *create_sub(const binary_expression_t *expression)
1108 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1109 expression_t *const expr_left = expression->left;
1110 expression_t *const expr_right = expression->right;
1111 ir_node *const left = expression_to_firm(expr_left);
1112 ir_node *const right = expression_to_firm(expr_right);
1113 type_t *const type = expression->expression.datatype;
1114 type_t *const type_left = skip_typeref(expr_left->datatype);
1115 type_t *const type_right = skip_typeref(expr_right->datatype);
1117 if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) {
1118 ir_mode *const mode = get_ir_mode(type);
1119 return new_d_Sub(dbgi, left, right, mode);
1120 } else if (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER) {
1121 const pointer_type_t *const ptr_type = (const pointer_type_t*)type_left;
1122 const unsigned elem_size = get_type_size(ptr_type->points_to);
1123 ir_mode *const mode = get_ir_mode(type);
1124 ir_node *const sub = new_d_Sub(dbgi, left, right, mode);
1125 ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size);
1126 ir_node *const no_mem = new_NoMem();
1127 ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode,
1128 op_pin_state_floats);
1129 return new_d_Proj(dbgi, div, mode, pn_Div_res);
1132 assert(type_left->type == TYPE_POINTER);
1133 return pointer_arithmetic(left, right, type_left, dbgi, new_d_Sub);
1136 static ir_node *create_shift(const binary_expression_t *expression)
1138 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1139 ir_node *left = expression_to_firm(expression->left);
1140 ir_node *right = expression_to_firm(expression->right);
1141 type_t *type = expression->expression.datatype;
1142 ir_mode *mode = get_ir_mode(type);
1144 /* firm always wants the shift count to be unsigned */
1145 right = create_conv(dbgi, right, mode_Iu);
1149 switch(expression->type) {
1150 case BINEXPR_SHIFTLEFT:
1151 res = new_d_Shl(dbgi, left, right, mode);
1153 case BINEXPR_SHIFTRIGHT: {
1154 expression_t *expr_left = expression->left;
1155 type_t *type_left = skip_typeref(expr_left->datatype);
1157 if(is_type_signed(type_left)) {
1158 res = new_d_Shrs(dbgi, left, right, mode);
1160 res = new_d_Shr(dbgi, left, right, mode);
1165 panic("create shift op called for non-shift op");
1172 static ir_node *create_divmod(const binary_expression_t *expression)
1174 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1175 ir_node *left = expression_to_firm(expression->left);
1176 ir_node *right = expression_to_firm(expression->right);
1177 ir_node *pin = new_Pin(new_NoMem());
1178 type_t *type = expression->expression.datatype;
1179 ir_mode *mode = get_ir_mode(type);
1183 switch (expression->type) {
1185 case BINEXPR_DIV_ASSIGN:
1186 if(mode_is_float(mode)) {
1187 op = new_d_Quot(dbgi, pin, left, right, mode, op_pin_state_floats);
1188 res = new_d_Proj(dbgi, op, mode, pn_Quot_res);
1190 op = new_d_Div(dbgi, pin, left, right, mode, op_pin_state_floats);
1191 res = new_d_Proj(dbgi, op, mode, pn_Div_res);
1196 case BINEXPR_MOD_ASSIGN:
1197 assert(!mode_is_float(mode));
1198 op = new_d_Mod(dbgi, pin, left, right, mode, op_pin_state_floats);
1199 res = new_d_Proj(dbgi, op, mode, pn_Mod_res);
1202 default: panic("unexpected binary expression type in create_divmod()");
1208 static ir_node *create_arithmetic_assign_divmod(
1209 const binary_expression_t *expression)
1211 ir_node * value = create_divmod(expression);
1212 dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position);
1213 type_t *const type = expression->expression.datatype;
1214 ir_mode *const mode = get_ir_mode(type);
1216 assert(type->type != TYPE_POINTER);
1218 value = create_conv(dbgi, value, mode);
1219 set_value_for_expression(expression->left, value);
1225 static ir_node *binary_expression_to_firm(const binary_expression_t *expression)
1227 binary_expression_type_t type = expression->type;
1230 case BINEXPR_NOTEQUAL:
1232 case BINEXPR_LESSEQUAL:
1233 case BINEXPR_GREATER:
1234 case BINEXPR_GREATEREQUAL: {
1235 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1236 ir_node *left = expression_to_firm(expression->left);
1237 ir_node *right = expression_to_firm(expression->right);
1238 ir_node *cmp = new_d_Cmp(dbgi, left, right);
1239 long pnc = get_pnc(type);
1240 ir_node *proj = new_d_Proj(dbgi, cmp, mode_b, pnc);
1243 case BINEXPR_ASSIGN: {
1244 ir_node *right = expression_to_firm(expression->right);
1245 set_value_for_expression(expression->left, right);
1249 return create_add(expression);
1251 return create_sub(expression);
1253 return create_arithmetic_binop(expression, new_d_Mul);
1254 case BINEXPR_BITWISE_AND:
1255 return create_arithmetic_binop(expression, new_d_And);
1256 case BINEXPR_BITWISE_OR:
1257 return create_arithmetic_binop(expression, new_d_Or);
1258 case BINEXPR_BITWISE_XOR:
1259 return create_arithmetic_binop(expression, new_d_Eor);
1260 case BINEXPR_SHIFTLEFT:
1261 case BINEXPR_SHIFTRIGHT:
1262 return create_shift(expression);
1265 return create_divmod(expression);
1266 case BINEXPR_LOGICAL_AND:
1267 case BINEXPR_LOGICAL_OR:
1268 return create_lazy_op(expression);
1270 expression_to_firm(expression->left);
1271 return expression_to_firm(expression->right);
1272 case BINEXPR_ADD_ASSIGN:
1273 return create_arithmetic_assign_binop(expression, new_d_Add);
1274 case BINEXPR_SUB_ASSIGN:
1275 return create_arithmetic_assign_binop(expression, new_d_Sub);
1276 case BINEXPR_MUL_ASSIGN:
1277 return create_arithmetic_assign_binop(expression, new_d_Mul);
1278 case BINEXPR_DIV_ASSIGN:
1279 return create_arithmetic_assign_divmod(expression);
1280 case BINEXPR_BITWISE_AND_ASSIGN:
1281 return create_arithmetic_assign_binop(expression, new_d_And);
1282 case BINEXPR_BITWISE_OR_ASSIGN:
1283 return create_arithmetic_assign_binop(expression, new_d_Or);
1284 case BINEXPR_BITWISE_XOR_ASSIGN:
1285 return create_arithmetic_assign_binop(expression, new_d_Eor);
1286 case BINEXPR_SHIFTLEFT_ASSIGN:
1287 return create_arithmetic_assign_binop(expression, new_d_Shl);
1288 case BINEXPR_SHIFTRIGHT_ASSIGN:
1289 return create_arithmetic_assign_binop(expression, new_d_Shr);
1291 panic("TODO binexpr type");
1295 static ir_node *array_access_addr(const array_access_expression_t *expression)
1297 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1301 type_t *type_left = skip_typeref(expression->array_ref->datatype);
1302 type_t *type_right = skip_typeref(expression->index->datatype);
1304 if(type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) {
1305 base_addr = expression_to_firm(expression->array_ref);
1306 offset = expression_to_firm(expression->index);
1308 assert(type_right->type == TYPE_POINTER
1309 || type_right->type == TYPE_ARRAY);
1310 base_addr = expression_to_firm(expression->index);
1311 offset = expression_to_firm(expression->array_ref);
1313 offset = create_conv(dbgi, offset, mode_Iu);
1315 unsigned elem_size = get_type_size(expression->expression.datatype);
1316 ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size);
1317 ir_node *real_offset = new_d_Mul(dbgi, offset, elem_size_const,
1319 ir_node *result = new_d_Add(dbgi, base_addr, real_offset, mode_P);
1324 static ir_node *array_access_to_firm(
1325 const array_access_expression_t *expression)
1327 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1328 ir_node *addr = array_access_addr(expression);
1329 type_t *type = skip_typeref(expression->expression.datatype);
1330 return deref_address(type, addr, dbgi);
1333 static ir_node *sizeof_to_firm(const sizeof_expression_t *expression)
1335 type_t *type = expression->type;
1337 type = expression->size_expression->datatype;
1338 assert(type != NULL);
1341 ir_mode *mode = get_ir_mode(expression->expression.datatype);
1342 unsigned size = get_type_size(type);
1343 ir_node *size_node = new_Const_long(mode, size);
1348 static ir_node *conditional_to_firm(const conditional_expression_t *expression)
1350 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1352 ir_node *cur_block = get_cur_block();
1354 /* create the true block */
1355 ir_node *true_block = new_immBlock();
1357 ir_node *true_val = expression_to_firm(expression->true_expression);
1358 ir_node *true_jmp = new_Jmp();
1360 /* create the false block */
1361 ir_node *false_block = new_immBlock();
1363 ir_node *false_val = expression_to_firm(expression->false_expression);
1364 ir_node *false_jmp = new_Jmp();
1366 /* create the condition evaluation */
1367 set_cur_block(cur_block);
1368 create_condition_evaluation(expression->condition, true_block, false_block);
1369 mature_immBlock(true_block);
1370 mature_immBlock(false_block);
1372 /* create the common block */
1373 ir_node *common_block = new_immBlock();
1374 add_immBlock_pred(common_block, true_jmp);
1375 add_immBlock_pred(common_block, false_jmp);
1376 mature_immBlock(common_block);
1378 /* TODO improve static semantics, so either both or no values are NULL */
1379 if (true_val == NULL || false_val == NULL) return NULL;
1381 ir_node *in[2] = { true_val, false_val };
1382 ir_mode *mode = get_irn_mode(true_val);
1383 assert(get_irn_mode(false_val) == mode);
1384 ir_node *val = new_d_Phi(dbgi, 2, in, mode);
1389 static ir_node *select_addr(const select_expression_t *expression)
1391 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1393 ir_node *compound_addr = expression_to_firm(expression->compound);
1395 declaration_t *entry = expression->compound_entry;
1396 assert(entry->declaration_type == DECLARATION_TYPE_COMPOUND_MEMBER);
1397 ir_entity *entity = entry->v.entity;
1399 assert(entity != NULL);
1401 ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), compound_addr, entity);
1406 static ir_node *select_to_firm(const select_expression_t *expression)
1408 dbg_info *dbgi = get_dbg_info(&expression->expression.source_position);
1409 ir_node *addr = select_addr(expression);
1410 type_t *type = skip_typeref(expression->expression.datatype);
1411 return deref_address(type, addr, dbgi);
1414 /* Values returned by __builtin_classify_type. */
1415 typedef enum gcc_type_class
1421 enumeral_type_class,
1424 reference_type_class,
1428 function_type_class,
1439 static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
1441 const type_t *const type = expr->type_expression->datatype;
1447 const atomic_type_t *const atomic_type = (const atomic_type_t*)type;
1448 switch (atomic_type->atype) {
1449 // should not be reached
1450 case ATOMIC_TYPE_INVALID:
1454 // gcc cannot do that
1455 case ATOMIC_TYPE_VOID:
1456 tc = void_type_class;
1459 case ATOMIC_TYPE_CHAR: // gcc handles this as integer
1460 case ATOMIC_TYPE_SCHAR: // gcc handles this as integer
1461 case ATOMIC_TYPE_UCHAR: // gcc handles this as integer
1462 case ATOMIC_TYPE_SHORT:
1463 case ATOMIC_TYPE_USHORT:
1464 case ATOMIC_TYPE_INT:
1465 case ATOMIC_TYPE_UINT:
1466 case ATOMIC_TYPE_LONG:
1467 case ATOMIC_TYPE_ULONG:
1468 case ATOMIC_TYPE_LONGLONG:
1469 case ATOMIC_TYPE_ULONGLONG:
1470 case ATOMIC_TYPE_BOOL: // gcc handles this as integer
1471 tc = integer_type_class;
1474 case ATOMIC_TYPE_FLOAT:
1475 case ATOMIC_TYPE_DOUBLE:
1476 case ATOMIC_TYPE_LONG_DOUBLE:
1477 tc = real_type_class;
1480 #ifdef PROVIDE_COMPLEX
1481 case ATOMIC_TYPE_FLOAT_COMPLEX:
1482 case ATOMIC_TYPE_DOUBLE_COMPLEX:
1483 case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
1484 tc = complex_type_class;
1486 case ATOMIC_TYPE_FLOAT_IMAGINARY:
1487 case ATOMIC_TYPE_DOUBLE_IMAGINARY:
1488 case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
1489 tc = complex_type_class;
1494 panic("Unimplemented case in classify_type_to_firm().");
1499 case TYPE_ARRAY: // gcc handles this as pointer
1500 case TYPE_FUNCTION: // gcc handles this as pointer
1501 case TYPE_POINTER: tc = pointer_type_class; break;
1502 case TYPE_COMPOUND_STRUCT: tc = record_type_class; break;
1503 case TYPE_COMPOUND_UNION: tc = union_type_class; break;
1505 // gcc handles this as integer
1506 case TYPE_ENUM: tc = integer_type_class; break;
1509 panic("Unimplemented case in classify_type_to_firm().");
1512 dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position);
1513 ir_mode *const mode = mode_Is;
1514 tarval *const tv = new_tarval_from_long(tc, mode);
1515 return new_d_Const(dbgi, mode, tv);
1518 static ir_node *function_name_to_firm(const string_literal_t *const expr)
1520 if (current_function_name == NULL) {
1521 const source_position_t *const src_pos =
1522 &expr->expression.source_position;
1523 const char *const name = current_function_decl->symbol->string;
1524 current_function_name = string_to_firm(src_pos, "__func__", name);
1527 return current_function_name;
1530 static ir_node *dereference_addr(const unary_expression_t *const expression)
1532 assert(expression->type == UNEXPR_DEREFERENCE);
1533 return expression_to_firm(expression->value);
1536 static ir_node *expression_to_addr(const expression_t *expression)
1538 switch(expression->type) {
1539 case EXPR_REFERENCE:
1540 return reference_addr((const reference_expression_t*) expression);
1541 case EXPR_ARRAY_ACCESS:
1542 return array_access_addr((const array_access_expression_t*) expression);
1544 return select_addr((const select_expression_t*) expression);
1546 const unary_expression_t *const unary_expr =
1547 (const unary_expression_t*)expression;
1548 if (unary_expr->type == UNEXPR_DEREFERENCE) {
1549 return dereference_addr(unary_expr);
1556 panic("trying to get address of non-lvalue");
1559 static ir_node *_expression_to_firm(const expression_t *expression)
1561 switch(expression->type) {
1563 return const_to_firm((const const_t*) expression);
1564 case EXPR_STRING_LITERAL:
1565 return string_literal_to_firm((const string_literal_t*) expression);
1566 case EXPR_REFERENCE:
1567 return reference_expression_to_firm(
1568 (const reference_expression_t*) expression);
1570 return call_expression_to_firm((const call_expression_t*) expression);
1572 return unary_expression_to_firm((const unary_expression_t*) expression);
1574 return binary_expression_to_firm(
1575 (const binary_expression_t*) expression);
1576 case EXPR_ARRAY_ACCESS:
1577 return array_access_to_firm(
1578 (const array_access_expression_t*) expression);
1580 return sizeof_to_firm((const sizeof_expression_t*) expression);
1581 case EXPR_CONDITIONAL:
1582 return conditional_to_firm((const conditional_expression_t*)expression);
1584 return select_to_firm((const select_expression_t*) expression);
1585 case EXPR_CLASSIFY_TYPE:
1586 return classify_type_to_firm((const classify_type_expression_t*)expression);
1588 case EXPR_PRETTY_FUNCTION:
1589 return function_name_to_firm((const string_literal_t*)expression);
1592 case EXPR_STATEMENT:
1593 case EXPR_BUILTIN_SYMBOL:
1594 panic("unimplemented expression found");
1600 panic("invalid expression found");
1603 static ir_node *expression_to_firm(const expression_t *expression)
1605 ir_node *res = _expression_to_firm(expression);
1607 if(res != NULL && get_irn_mode(res) == mode_b) {
1608 ir_mode *mode = get_ir_mode(expression->datatype);
1609 res = create_conv(NULL, res, mode);
1615 static ir_node *expression_to_modeb(const expression_t *expression)
1617 ir_node *res = _expression_to_firm(expression);
1618 res = create_conv(NULL, res, mode_b);
1624 * create a short-circuit expression evaluation that tries to construct
1625 * efficient control flow structures for &&, || and ! expressions
1627 static void create_condition_evaluation(const expression_t *expression,
1628 ir_node *true_block,
1629 ir_node *false_block)
1631 switch(expression->type) {
1633 unary_expression_t *unary_expression = (unary_expression_t*) expression;
1634 if(unary_expression->type == UNEXPR_NOT) {
1635 create_condition_evaluation(unary_expression->value, false_block,
1642 binary_expression_t *binary_expression
1643 = (binary_expression_t*) expression;
1644 if(binary_expression->type == BINEXPR_LOGICAL_AND) {
1645 ir_node *cur_block = get_cur_block();
1646 ir_node *extra_block = new_immBlock();
1647 set_cur_block(cur_block);
1648 create_condition_evaluation(binary_expression->left, extra_block,
1650 mature_immBlock(extra_block);
1651 set_cur_block(extra_block);
1652 create_condition_evaluation(binary_expression->right, true_block,
1656 if(binary_expression->type == BINEXPR_LOGICAL_OR) {
1657 ir_node *cur_block = get_cur_block();
1658 ir_node *extra_block = new_immBlock();
1659 set_cur_block(cur_block);
1660 create_condition_evaluation(binary_expression->left, true_block,
1662 mature_immBlock(extra_block);
1663 set_cur_block(extra_block);
1664 create_condition_evaluation(binary_expression->right, true_block,
1674 dbg_info *dbgi = get_dbg_info(&expression->source_position);
1675 ir_node *condition = expression_to_modeb(expression);
1676 ir_node *cond = new_d_Cond(dbgi, condition);
1677 ir_node *true_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_true);
1678 ir_node *false_proj = new_d_Proj(dbgi, cond, mode_X, pn_Cond_false);
1680 add_immBlock_pred(true_block, true_proj);
1681 add_immBlock_pred(false_block, false_proj);
1683 set_cur_block(NULL);
1686 static void statement_to_firm(statement_t *statement);
1688 static void return_statement_to_firm(return_statement_t *statement)
1690 if(get_cur_block() == NULL)
1693 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
1696 if(statement->return_value != NULL) {
1697 ir_node *retval = expression_to_firm(statement->return_value);
1701 ret = new_d_Return(dbgi, get_store(), 1, in);
1703 ret = new_d_Return(dbgi, get_store(), 0, NULL);
1705 ir_node *end_block = get_irg_end_block(current_ir_graph);
1706 add_immBlock_pred(end_block, ret);
1708 set_cur_block(NULL);
1711 static void compound_statement_to_firm(compound_statement_t *compound)
1713 statement_t *statement = compound->statements;
1714 for( ; statement != NULL; statement = statement->next) {
1715 //context2firm(&statement->context);
1716 statement_to_firm(statement);
1720 static void expression_statement_to_firm(expression_statement_t *statement)
1722 if(get_cur_block() == NULL)
1725 expression_to_firm(statement->expression);
1728 static void if_statement_to_firm(if_statement_t *statement)
1730 ir_node *cur_block = get_cur_block();
1732 ir_node *fallthrough_block = new_immBlock();
1734 /* the true (blocks) */
1735 ir_node *true_block;
1736 if (statement->true_statement != NULL) {
1737 true_block = new_immBlock();
1738 statement_to_firm(statement->true_statement);
1739 if(get_cur_block() != NULL) {
1740 ir_node *jmp = new_Jmp();
1741 add_immBlock_pred(fallthrough_block, jmp);
1744 true_block = fallthrough_block;
1747 /* the false (blocks) */
1748 ir_node *false_block;
1749 if(statement->false_statement != NULL) {
1750 false_block = new_immBlock();
1752 statement_to_firm(statement->false_statement);
1753 if(get_cur_block() != NULL) {
1754 ir_node *jmp = new_Jmp();
1755 add_immBlock_pred(fallthrough_block, jmp);
1758 false_block = fallthrough_block;
1761 /* create the condition */
1762 if(cur_block != NULL) {
1763 set_cur_block(cur_block);
1764 create_condition_evaluation(statement->condition, true_block,
1768 mature_immBlock(true_block);
1769 if(false_block != fallthrough_block) {
1770 mature_immBlock(false_block);
1772 mature_immBlock(fallthrough_block);
1774 set_cur_block(fallthrough_block);
1777 static void while_statement_to_firm(while_statement_t *statement)
1779 ir_node *jmp = NULL;
1780 if(get_cur_block() != NULL) {
1784 /* create the header block */
1785 ir_node *header_block = new_immBlock();
1787 add_immBlock_pred(header_block, jmp);
1790 /* the false block */
1791 ir_node *false_block = new_immBlock();
1794 ir_node *body_block;
1795 if (statement->body != NULL) {
1796 ir_node *old_continue_label = continue_label;
1797 ir_node *old_break_label = break_label;
1798 continue_label = header_block;
1799 break_label = false_block;
1801 body_block = new_immBlock();
1802 statement_to_firm(statement->body);
1804 assert(continue_label == header_block);
1805 assert(break_label == false_block);
1806 continue_label = old_continue_label;
1807 break_label = old_break_label;
1809 if(get_cur_block() != NULL) {
1810 ir_node *jmp = new_Jmp();
1811 add_immBlock_pred(header_block, jmp);
1814 body_block = header_block;
1817 /* create the condition */
1818 set_cur_block(header_block);
1820 create_condition_evaluation(statement->condition, body_block, false_block);
1821 mature_immBlock(body_block);
1822 mature_immBlock(false_block);
1823 mature_immBlock(header_block);
1825 set_cur_block(false_block);
1828 static void do_while_statement_to_firm(do_while_statement_t *statement)
1830 ir_node *jmp = NULL;
1831 if(get_cur_block() != NULL) {
1835 /* create the header block */
1836 ir_node *header_block = new_immBlock();
1838 /* the false block */
1839 ir_node *false_block = new_immBlock();
1842 ir_node *body_block = new_immBlock();
1844 add_immBlock_pred(body_block, jmp);
1847 if (statement->body != NULL) {
1848 ir_node *old_continue_label = continue_label;
1849 ir_node *old_break_label = break_label;
1850 continue_label = header_block;
1851 break_label = false_block;
1853 statement_to_firm(statement->body);
1855 assert(continue_label == header_block);
1856 assert(break_label == false_block);
1857 continue_label = old_continue_label;
1858 break_label = old_break_label;
1860 if (get_cur_block() == NULL) {
1861 mature_immBlock(header_block);
1862 mature_immBlock(body_block);
1863 mature_immBlock(false_block);
1868 ir_node *body_jmp = new_Jmp();
1869 add_immBlock_pred(header_block, body_jmp);
1870 mature_immBlock(header_block);
1872 /* create the condition */
1873 set_cur_block(header_block);
1875 create_condition_evaluation(statement->condition, body_block, false_block);
1876 mature_immBlock(body_block);
1877 mature_immBlock(false_block);
1878 mature_immBlock(header_block);
1880 set_cur_block(false_block);
1883 static void for_statement_to_firm(for_statement_t *statement)
1885 ir_node *jmp = NULL;
1886 if (get_cur_block() != NULL) {
1887 if(statement->initialisation != NULL) {
1888 expression_to_firm(statement->initialisation);
1893 /* create the step block */
1894 ir_node *const step_block = new_immBlock();
1895 if (statement->step != NULL) {
1896 expression_to_firm(statement->step);
1898 ir_node *const step_jmp = new_Jmp();
1900 /* create the header block */
1901 ir_node *const header_block = new_immBlock();
1903 add_immBlock_pred(header_block, jmp);
1905 add_immBlock_pred(header_block, step_jmp);
1907 /* the false block */
1908 ir_node *const false_block = new_immBlock();
1911 ir_node * body_block;
1912 if (statement->body != NULL) {
1913 ir_node *const old_continue_label = continue_label;
1914 ir_node *const old_break_label = break_label;
1915 continue_label = step_block;
1916 break_label = false_block;
1918 body_block = new_immBlock();
1919 statement_to_firm(statement->body);
1921 assert(continue_label == step_block);
1922 assert(break_label == false_block);
1923 continue_label = old_continue_label;
1924 break_label = old_break_label;
1926 if (get_cur_block() != NULL) {
1927 ir_node *const jmp = new_Jmp();
1928 add_immBlock_pred(step_block, jmp);
1931 body_block = step_block;
1934 /* create the condition */
1935 set_cur_block(header_block);
1936 if (statement->condition != NULL) {
1937 create_condition_evaluation(statement->condition, body_block,
1940 keep_alive(header_block);
1941 ir_node *jmp = new_Jmp();
1942 add_immBlock_pred(body_block, jmp);
1945 mature_immBlock(body_block);
1946 mature_immBlock(false_block);
1947 mature_immBlock(step_block);
1948 mature_immBlock(header_block);
1949 mature_immBlock(false_block);
1951 set_cur_block(false_block);
1954 static void create_declaration_entity(declaration_t *declaration,
1955 declaration_type_t declaration_type,
1956 ir_type *parent_type)
1958 ident *id = new_id_from_str(declaration->symbol->string);
1959 ir_type *irtype = get_ir_type(declaration->type);
1960 ir_entity *entity = new_entity(parent_type, id, irtype);
1961 set_entity_ld_ident(entity, id);
1963 declaration->declaration_type = declaration_type;
1964 declaration->v.entity = entity;
1965 set_entity_variability(entity, variability_uninitialized);
1966 /* TODO: visibility? */
1969 typedef struct compound_graph_path_entry_t compound_graph_path_entry_t;
1971 enum compound_graph_entry_type_t {
1972 COMPOUND_GRAPH_ENTRY_ARRAY,
1973 COMPOUND_GRAPH_ENTRY_COMPOUND
1976 struct compound_graph_path_entry_t {
1982 compound_graph_path_entry_t *prev;
1985 static void create_initializer_list(initializer_list_t *initializer,
1986 type_t *type, ir_entity *entity,
1987 compound_graph_path_entry_t *entry,
1990 static void create_initializer_value(initializer_value_t *initializer,
1992 compound_graph_path_entry_t *entry,
1995 ir_node *node = expression_to_firm(initializer->value);
1997 ir_type *type = get_entity_type(entity);
1998 compound_graph_path *path = new_compound_graph_path(type, len);
2001 for( ; entry != NULL; entry = entry->prev, --i) {
2003 if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) {
2004 set_compound_graph_path_node(path, i, entry->v.entity);
2006 assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY);
2007 set_compound_graph_path_array_index(path, i, entry->v.array_index);
2012 add_compound_ent_value_w_path(entity, node, path);
2015 static void create_initializer_compound(initializer_list_t *initializer,
2016 compound_type_t *type,
2018 compound_graph_path_entry_t *last_entry,
2021 declaration_t *compound_declaration = type->declaration;
2023 declaration_t *compound_entry = compound_declaration->context.declarations;
2025 compound_graph_path_entry_t entry;
2026 entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND;
2027 entry.prev = last_entry;
2031 for( ; compound_entry != NULL; compound_entry = compound_entry->next) {
2032 if(compound_entry->symbol == NULL)
2034 if(compound_entry->namespc != NAMESPACE_NORMAL)
2037 if(i >= initializer->len)
2040 entry.v.entity = compound_entry->v.entity;
2042 initializer_t *sub_initializer = initializer->initializers[i];
2044 assert(compound_entry != NULL);
2045 assert(compound_entry->declaration_type
2046 == DECLARATION_TYPE_COMPOUND_MEMBER);
2048 if(sub_initializer->type == INITIALIZER_VALUE) {
2049 create_initializer_value((initializer_value_t*) sub_initializer,
2050 entity, &entry, len);
2052 assert(sub_initializer->type == INITIALIZER_LIST);
2053 create_initializer_list((initializer_list_t*) sub_initializer,
2054 compound_entry->type, entity, &entry, len);
2061 static void create_initializer_array(initializer_list_t *initializer,
2062 array_type_t *type, ir_entity *entity,
2063 compound_graph_path_entry_t *last_entry,
2066 type_t *element_type = type->element_type;
2068 compound_graph_path_entry_t entry;
2069 entry.type = COMPOUND_GRAPH_ENTRY_ARRAY;
2070 entry.prev = last_entry;
2073 for(size_t i = 0; i < initializer->len; ++i) {
2074 entry.v.array_index = i;
2076 initializer_t *sub_initializer = initializer->initializers[i];
2078 if(sub_initializer->type == INITIALIZER_VALUE) {
2079 create_initializer_value((initializer_value_t*) sub_initializer,
2080 entity, &entry, len);
2082 assert(sub_initializer->type == INITIALIZER_LIST);
2083 create_initializer_list((initializer_list_t*) sub_initializer,
2084 element_type, entity, &entry, len);
2089 static void create_initializer_list(initializer_list_t *initializer,
2090 type_t *type, ir_entity *entity,
2091 compound_graph_path_entry_t *entry, int len)
2093 if(type->type == TYPE_ARRAY) {
2094 create_initializer_array(initializer, (array_type_t*) type,
2095 entity, entry, len);
2097 assert(type->type == TYPE_COMPOUND_STRUCT
2098 || type->type == TYPE_COMPOUND_UNION);
2099 create_initializer_compound(initializer, (compound_type_t*) type,
2100 entity, entry, len);
2104 static void create_initializer(declaration_t *declaration)
2106 initializer_t *initializer = declaration->init.initializer;
2107 if(initializer == NULL)
2110 if(initializer->type == INITIALIZER_VALUE) {
2111 initializer_value_t *initializer_value
2112 = (initializer_value_t*) initializer;
2113 ir_node *value = expression_to_firm(initializer_value->value);
2115 if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) {
2116 set_value(declaration->v.value_number, value);
2118 ir_entity *entity = declaration->v.entity;
2120 set_entity_variability(entity, variability_initialized);
2121 set_atomic_ent_value(entity, value);
2124 assert(initializer->type == INITIALIZER_LIST);
2125 initializer_list_t *list = (initializer_list_t*) initializer;
2127 declaration_type_t declaration_type = declaration->declaration_type;
2128 assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY
2129 || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE);
2131 ir_entity *entity = declaration->v.entity;
2132 set_entity_variability(entity, variability_initialized);
2134 create_initializer_list(list, declaration->type, entity, NULL, 0);
2138 static void create_local_variable(declaration_t *declaration)
2140 assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN);
2142 bool needs_entity = declaration->address_taken;
2143 type_t *type = skip_typeref(declaration->type);
2145 if(type->type == TYPE_ARRAY
2146 || type->type == TYPE_COMPOUND_STRUCT
2147 || type->type == TYPE_COMPOUND_UNION) {
2148 needs_entity = true;
2152 ir_type *frame_type = get_irg_frame_type(current_ir_graph);
2153 create_declaration_entity(declaration,
2154 DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY,
2157 declaration->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2158 declaration->v.value_number = next_value_number_function;
2159 ++next_value_number_function;
2162 create_initializer(declaration);
2165 static void declaration_statement_to_firm(declaration_statement_t *statement)
2167 declaration_t *declaration = statement->declarations_begin;
2168 declaration_t *end = statement->declarations_end->next;
2169 for( ; declaration != end; declaration = declaration->next) {
2170 type_t *type = declaration->type;
2172 switch(declaration->storage_class) {
2173 case STORAGE_CLASS_TYPEDEF:
2175 case STORAGE_CLASS_STATIC:
2176 panic("static local vars not implemented yet");
2177 case STORAGE_CLASS_ENUM_ENTRY:
2178 panic("enum entry declaration in local block found");
2179 case STORAGE_CLASS_EXTERN:
2180 panic("extern declaration in local block found");
2181 case STORAGE_CLASS_NONE:
2182 case STORAGE_CLASS_AUTO:
2183 case STORAGE_CLASS_REGISTER:
2184 if(type->type == TYPE_FUNCTION) {
2185 panic("nested functions not supported yet");
2187 create_local_variable(declaration);
2191 panic("invalid storage class found");
2195 static void create_jump_statement(const statement_t *statement,
2196 ir_node *target_block)
2198 if(get_cur_block() == NULL)
2201 dbg_info *dbgi = get_dbg_info(&statement->source_position);
2202 ir_node *jump = new_d_Jmp(dbgi);
2203 add_immBlock_pred(target_block, jump);
2205 set_cur_block(NULL);
2208 static void switch_statement_to_firm(const switch_statement_t *statement)
2210 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2212 ir_node *expression = expression_to_firm(statement->expression);
2213 ir_node *cond = new_d_Cond(dbgi, expression);
2214 ir_node *break_block = new_immBlock();
2216 set_cur_block(NULL);
2218 ir_node *const old_switch_cond = current_switch_cond;
2219 ir_node *const old_break_label = break_label;
2220 const bool old_saw_default_label = saw_default_label;
2221 current_switch_cond = cond;
2222 break_label = break_block;
2224 statement_to_firm(statement->body);
2226 if(get_cur_block() != NULL) {
2227 ir_node *jmp = new_Jmp();
2228 add_immBlock_pred(break_block, jmp);
2231 if (!saw_default_label) {
2232 set_cur_block(get_nodes_block(cond));
2233 ir_node *const proj = new_d_defaultProj(dbgi, cond,
2234 MAGIC_DEFAULT_PN_NUMBER);
2235 add_immBlock_pred(break_block, proj);
2238 assert(current_switch_cond == cond);
2239 assert(break_label == break_block);
2240 current_switch_cond = old_switch_cond;
2241 break_label = old_break_label;
2242 saw_default_label = old_saw_default_label;
2244 mature_immBlock(break_block);
2245 set_cur_block(break_block);
2248 static long fold_constant(const expression_t *expression)
2250 ir_graph *old_current_ir_graph = current_ir_graph;
2251 current_ir_graph = get_const_code_irg();
2253 ir_node *cnst = expression_to_firm(expression);
2254 if(!is_Const(cnst)) {
2255 panic("couldn't fold constantl");
2257 tarval *tv = get_Const_tarval(cnst);
2258 if(!tarval_is_long(tv)) {
2259 panic("folded constant not an integer");
2262 long res = get_tarval_long(tv);
2264 current_ir_graph = old_current_ir_graph;
2268 static void case_label_to_firm(const case_label_statement_t *statement)
2270 dbg_info *dbgi = get_dbg_info(&statement->statement.source_position);
2272 ir_node *const fallthrough = (get_cur_block() == NULL ? NULL : new_Jmp());
2274 /* let's create a node and hope firm constant folding creates a Const
2277 set_cur_block(get_nodes_block(current_switch_cond));
2278 if(statement->expression) {
2279 long pn = fold_constant(statement->expression);
2280 if(pn == MAGIC_DEFAULT_PN_NUMBER) {
2281 /* oops someone detected our cheating... */
2282 panic("magic default pn used");
2284 proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
2286 saw_default_label = true;
2287 proj = new_d_defaultProj(dbgi, current_switch_cond,
2288 MAGIC_DEFAULT_PN_NUMBER);
2291 ir_node *block = new_immBlock();
2292 if (fallthrough != NULL) {
2293 add_immBlock_pred(block, fallthrough);
2295 add_immBlock_pred(block, proj);
2296 mature_immBlock(block);
2298 statement_to_firm(statement->label_statement);
2301 static ir_node *get_label_block(declaration_t *label)
2303 assert(label->namespc == NAMESPACE_LABEL);
2305 if(label->declaration_type == DECLARATION_TYPE_LABEL_BLOCK) {
2306 return label->v.block;
2308 assert(label->declaration_type == DECLARATION_TYPE_UNKNOWN);
2310 ir_node *old_cur_block = get_cur_block();
2311 ir_node *block = new_immBlock();
2312 set_cur_block(old_cur_block);
2314 label->declaration_type = DECLARATION_TYPE_LABEL_BLOCK;
2315 label->v.block = block;
2317 ARR_APP1(ir_node *, imature_blocks, block);
2322 static void label_to_firm(const label_statement_t *statement)
2324 ir_node *block = get_label_block(statement->label);
2326 if(get_cur_block() != NULL) {
2327 ir_node *jmp = new_Jmp();
2328 add_immBlock_pred(block, jmp);
2331 set_cur_block(block);
2334 statement_to_firm(statement->label_statement);
2337 static void goto_to_firm(const goto_statement_t *statement)
2339 if(get_cur_block() == NULL)
2342 ir_node *block = get_label_block(statement->label);
2343 ir_node *jmp = new_Jmp();
2344 add_immBlock_pred(block, jmp);
2346 set_cur_block(NULL);
2349 static void statement_to_firm(statement_t *statement)
2351 switch(statement->type) {
2352 case STATEMENT_COMPOUND:
2353 compound_statement_to_firm((compound_statement_t*) statement);
2355 case STATEMENT_RETURN:
2356 return_statement_to_firm((return_statement_t*) statement);
2358 case STATEMENT_EXPRESSION:
2359 expression_statement_to_firm((expression_statement_t*) statement);
2362 if_statement_to_firm((if_statement_t*) statement);
2364 case STATEMENT_WHILE:
2365 while_statement_to_firm((while_statement_t*) statement);
2367 case STATEMENT_DO_WHILE:
2368 do_while_statement_to_firm((do_while_statement_t*) statement);
2370 case STATEMENT_DECLARATION:
2371 declaration_statement_to_firm((declaration_statement_t*) statement);
2373 case STATEMENT_BREAK:
2374 create_jump_statement(statement, break_label);
2376 case STATEMENT_CONTINUE:
2377 create_jump_statement(statement, continue_label);
2379 case STATEMENT_SWITCH:
2380 switch_statement_to_firm((switch_statement_t*) statement);
2382 case STATEMENT_CASE_LABEL:
2383 case_label_to_firm((case_label_statement_t*) statement);
2386 for_statement_to_firm((for_statement_t*) statement);
2388 case STATEMENT_LABEL:
2389 label_to_firm((label_statement_t*) statement);
2391 case STATEMENT_GOTO:
2392 goto_to_firm((goto_statement_t*) statement);
2397 panic("Statement not implemented\n");
2400 static int count_local_declarations(const declaration_t * decl,
2401 const declaration_t *const end)
2404 for (; decl != end; decl = decl->next) {
2405 const type_t *type = skip_typeref(decl->type);
2406 switch (type->type) {
2410 if (!decl->address_taken) ++count;
2419 static int count_decls_in_stmts(const statement_t *stmt)
2422 for (; stmt != NULL; stmt = stmt->next) {
2423 switch (stmt->type) {
2424 case STATEMENT_DECLARATION: {
2425 const declaration_statement_t *const decl_stmt =
2426 (const declaration_statement_t*)stmt;
2427 count += count_local_declarations(decl_stmt->declarations_begin,
2428 decl_stmt->declarations_end->next);
2432 case STATEMENT_COMPOUND: {
2433 const compound_statement_t *const comp =
2434 (const compound_statement_t*)stmt;
2435 count += count_decls_in_stmts(comp->statements);
2439 case STATEMENT_IF: {
2440 const if_statement_t *const if_stmt = (const if_statement_t*)stmt;
2441 count += count_decls_in_stmts(if_stmt->true_statement);
2442 count += count_decls_in_stmts(if_stmt->false_statement);
2446 case STATEMENT_SWITCH: {
2447 const switch_statement_t *const switch_stmt =
2448 (const switch_statement_t*)stmt;
2449 count += count_decls_in_stmts(switch_stmt->body);
2453 case STATEMENT_LABEL: {
2454 const label_statement_t *const label_stmt =
2455 (const label_statement_t*)stmt;
2456 count += count_decls_in_stmts(label_stmt->label_statement);
2460 case STATEMENT_WHILE: {
2461 const while_statement_t *const while_stmt =
2462 (const while_statement_t*)stmt;
2463 count += count_decls_in_stmts(while_stmt->body);
2467 case STATEMENT_DO_WHILE: {
2468 const do_while_statement_t *const do_while_stmt =
2469 (const do_while_statement_t*)stmt;
2470 count += count_decls_in_stmts(do_while_stmt->body);
2474 case STATEMENT_FOR: {
2475 const for_statement_t *const for_stmt =
2476 (const for_statement_t*)stmt;
2477 /* TODO initialisation */
2478 count += count_decls_in_stmts(for_stmt->body);
2482 case STATEMENT_BREAK:
2483 case STATEMENT_CASE_LABEL:
2484 case STATEMENT_CONTINUE:
2485 case STATEMENT_EXPRESSION:
2486 case STATEMENT_GOTO:
2487 case STATEMENT_INVALID:
2488 case STATEMENT_RETURN:
2495 static int get_function_n_local_vars(declaration_t *declaration)
2499 /* count parameters */
2500 count += count_local_declarations(declaration->context.declarations, NULL);
2502 /* count local variables declared in body */
2503 count += count_decls_in_stmts(declaration->init.statement);
2508 static void initialize_function_parameters(declaration_t *declaration)
2510 ir_graph *irg = current_ir_graph;
2511 ir_node *args = get_irg_args(irg);
2512 ir_node *start_block = get_irg_start_block(irg);
2513 ir_type *function_irtype = get_ir_type(declaration->type);
2516 declaration_t *parameter = declaration->context.declarations;
2517 for( ; parameter != NULL; parameter = parameter->next, ++n) {
2518 assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN);
2519 type_t *type = parameter->type;
2521 bool needs_entity = parameter->address_taken;
2522 if(type->type == TYPE_COMPOUND_STRUCT
2523 || type->type == TYPE_COMPOUND_UNION) {
2524 needs_entity = true;
2528 ir_entity *entity = get_method_value_param_ent(function_irtype, n);
2529 ident *id = new_id_from_str(parameter->symbol->string);
2530 set_entity_ident(entity, id);
2532 parameter->declaration_type
2533 = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY;
2534 parameter->v.entity = entity;
2538 ir_mode *mode = get_ir_mode(parameter->type);
2540 ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn);
2542 parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE;
2543 parameter->v.value_number = next_value_number_function;
2544 ++next_value_number_function;
2546 set_value(parameter->v.value_number, proj);
2550 static void create_function(declaration_t *declaration)
2552 ir_entity *entity = get_function_entity(declaration);
2554 if(declaration->init.statement == NULL)
2557 current_function_decl = declaration;
2558 current_function_name = NULL;
2560 assert(imature_blocks == NULL);
2561 imature_blocks = NEW_ARR_F(ir_node*, 0);
2563 int n_local_vars = get_function_n_local_vars(declaration);
2564 ir_graph *irg = new_ir_graph(entity, n_local_vars);
2565 ir_node *first_block = get_cur_block();
2567 next_value_number_function = 0;
2568 initialize_function_parameters(declaration);
2570 statement_to_firm(declaration->init.statement);
2572 ir_node *end_block = get_irg_end_block(irg);
2574 /* do we have a return statement yet? */
2575 if(get_cur_block() != NULL) {
2576 assert(declaration->type->type == TYPE_FUNCTION);
2577 const function_type_t* const func_type
2578 = (const function_type_t*) declaration->type;
2580 if (func_type->result_type == type_void) {
2581 ret = new_Return(get_store(), 0, NULL);
2583 ir_mode *const mode = get_ir_mode(func_type->result_type);
2585 // ยง5.1.2.2.3 main implicitly returns 0
2586 if (strcmp(declaration->symbol->string, "main") == 0) {
2587 in[0] = new_Const(mode, get_mode_null(mode));
2589 in[0] = new_Unknown(mode);
2591 ret = new_Return(get_store(), 1, in);
2593 add_immBlock_pred(end_block, ret);
2596 for(int i = 0; i < ARR_LEN(imature_blocks); ++i) {
2597 mature_immBlock(imature_blocks[i]);
2599 DEL_ARR_F(imature_blocks);
2600 imature_blocks = NULL;
2602 mature_immBlock(first_block);
2603 mature_immBlock(end_block);
2605 irg_finalize_cons(irg);
2607 /* finalize the frame type */
2608 ir_type *frame_type = get_irg_frame_type(irg);
2609 int n = get_compound_n_members(frame_type);
2612 for(int i = 0; i < n; ++i) {
2613 ir_entity *entity = get_compound_member(frame_type, i);
2614 ir_type *entity_type = get_entity_type(entity);
2616 int align = get_type_alignment_bytes(entity_type);
2617 if(align > align_all)
2621 misalign = offset % align;
2623 offset += align - misalign;
2627 set_entity_offset(entity, offset);
2628 offset += get_type_size_bytes(entity_type);
2630 set_type_size_bytes(frame_type, offset);
2631 set_type_alignment_bytes(frame_type, align_all);
2632 set_type_state(frame_type, layout_fixed);
2637 static void create_global_variable(declaration_t *declaration)
2639 ir_type *global_type = get_glob_type();
2640 create_declaration_entity(declaration, DECLARATION_TYPE_GLOBAL_VARIABLE,
2643 ir_entity *entity = declaration->v.entity;
2644 if(declaration->storage_class == STORAGE_CLASS_STATIC) {
2645 set_entity_visibility(entity, visibility_local);
2646 } else if(declaration->storage_class == STORAGE_CLASS_EXTERN) {
2647 set_entity_visibility(entity, visibility_external_allocated);
2649 set_entity_visibility(entity, visibility_external_visible);
2651 current_ir_graph = get_const_code_irg();
2652 create_initializer(declaration);
2655 static void context_to_firm(context_t *context)
2657 declaration_t *declaration = context->declarations;
2658 for( ; declaration != NULL; declaration = declaration->next) {
2659 if(declaration->namespc != NAMESPACE_NORMAL)
2661 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY
2662 || declaration->storage_class == STORAGE_CLASS_TYPEDEF)
2664 if(declaration->symbol == NULL)
2667 type_t *type = declaration->type;
2668 if(type->type == TYPE_FUNCTION) {
2669 create_function(declaration);
2671 create_global_variable(declaration);
2676 void translation_unit_to_firm(translation_unit_t *unit)
2678 /* just to be sure */
2679 continue_label = NULL;
2681 current_switch_cond = NULL;
2683 context_to_firm(& unit->context);